CN219139898U - Eccentric expansion pipe sealing valve - Google Patents

Abstract

The invention relates to an eccentric expansion pipe sealing valve. The problem that when the valve is opened and closed, the total length of the valve seat of the expansion pipe is increased, so that folds appear at the contact position of the valve seat of the expansion pipe and the valve body is solved; the principle is that the center of a motion assembly of the expansion pipe assembly can be displaced by changing the design of the expansion pipe assembly, and the displacement process of the motion assembly not only realizes sealing, but also solves the problem of deformation and wrinkling of the valve seat of the expansion pipe. Is characterized in that: in the dynamic process of opening-closing or closing-opening, the total length of the moving assembly of the inner shrinkage type expansion pipe assembly is changed, the valve is minimum when fully opened, and the valve is maximum when fully closed. The central point position of the moving assembly of the inward-shrinking expansion pipe assembly is dynamically changed. The dynamic center point of the moving assembly of the inner shrinkage type expansion pipe assembly has an eccentric distance relative to the center point of the original opening position or the original closing position of the moving assembly of the inner shrinkage type expansion pipe assembly. The initial position of the center point of the moving assembly of the inner shrinkage type expansion pipe assembly is eccentric distance relative to the final position.

Description

An eccentric expansion tube sealing valve

technical field

The proposal relates to the field of valves, in particular to an eccentric expansion tube sealing valve;

Because of its retractable structure, the name "a retractable eccentric expansion tube sealing valve" will be used to describe it uniformly below.

Among them, the extended expansion tube assembly of the valve is stretched and deformed when it is inflated with air or liquid, or when it is discharged with gas or liquid;

The center point of the moving component of the retractable expansion tube component changes with the dynamic process of the valve opening to closing or closing to opening;

That is, the initial position of the valve is in the open position, and then the retractable expansion tube assembly is inflated with air or liquid until it reaches the closed position, and the center point of the moving component of the retractable expansion tube assembly has a dynamic offset distance;

Or the initial position of the valve is in the closed position, and then the retractable expansion tube assembly exhausts or liquids until it reaches the open position, and the center point of the moving component of the retractable expansion tube assembly has a dynamic offset distance;

Among them, the valve seat of the retractable expansion tube assembly closely contacts and seals with the valve body after inflation or liquid expansion, and then closes the medium delivery section in the valve body and closes the valve;

Among them, the valve seat of the retractable expansion tube assembly, when the gas or liquid is discharged under the action of its own elasticity, exposes the inner space of the valve body, forms a medium delivery channel in the valve body, and opens the valve;

Then realize the cutting and conducting of the medium, and realize the opening or closing of the valve;

It is a retractable eccentric expansion tube sealing valve with eccentric movement in the moving component of the retractable expansion tube assembly.

Background technique

The invention patent with the application number 202010267761.9 discloses an expansion pipe sealing valve, including a valve body assembly, an expansion pipe assembly, an open position and a closed position sensor assembly, a sealing assembly, a connection assembly, and a protection assembly.

The above-mentioned valve has the following problems due to the restriction of the valve structure:

1. When the valve is in the open position, the medium pressure in the pipeline acts on the valve seat of the expansion tube. The valve seat of the expansion tube assembly will be deformed by pressure, the cross section of the valve seat will be deformed under the pressure of the inflowing medium, and the external shape will change, for example, the outer circle of the cross section of the valve seat will be concave, or the valve seat will become The flat oval shape changes the flow form of the medium in the valve body cavity, causing large pressure fluctuations and affecting the process effect.

2. Same as problem 1, when the valve is in the open position, the medium pressure in the pipeline acts on the valve seat of the expansion pipe, and the valve seat of the expansion pipe is partially concave and deformed, which is inconsistent with the convex state of the valve seat when it is normally opened, causing its impact on the valve. The end of the seat, that is, the joint where the valve seat connects to the pagoda of the expansion tube assembly, produces stress in different directions. Under long-term action, the valve seat is partially cracked.

3. When the valve is closed, the valve seat of the expansion tube is inflated and deformed, its diameter becomes larger, and its total axial length will also increase. This increase will cause deformation of the valve seat of the expansion tube, resulting in wrinkles at the contact position of the valve body. Sometimes it will be poorly sealed, and even cause the valve seat of the expansion tube to be damaged too quickly.

4. When the inlet pipe and outlet pipe of the valve are located in the contact chamber of the first valve seat, the valve will carry powder or fine particles, and when compressed gas is used to transport, the second valve seat non-contact chamber on the upper side of the valve body cavity, and the valve There will be a certain amount of material accumulation in the non-contact cavity of the third valve seat on the lower side of the body cavity. When the accumulation is large, it will affect the opening and closing of the valve, thereby affecting the performance.

Contents of the invention

This solution aims at the above problems, overcomes at least one deficiency, and provides a retractable eccentric expansion tube sealing valve.

In order to achieve the above purpose, this solution provides the following technical solutions.

A retractable eccentric expansion tube sealing valve is characterized in that it includes the following components:

Valve assembly, assembly includes:

Valve body components: valve body, valve body upper flange, valve body lower flange, valve body upper gland, valve body lower gland, medium inlet pipe, medium inlet pipe flange, medium outlet pipe, medium outlet flange , Terminal spray pipe, used to connect with equipment or pipelines or realize terminal spray function;

Collapsible expansion tube assembly, including:

Movement components: retractable expansion tube valve seat, upper metal clamp of pagoda joint, lower metal clamp of pagoda joint, retractable upper pagoda joint, retractable upper pagoda joint valve seat inner extension tube, retractable lower pagoda joint , Retractable lower pagoda joint valve seat inner extension tube;

Fixed components, retractable lower pagoda joint support components;

Used to realize the sealing when the valve is opened and closed;

Sealing components: sealing gaskets for each position and closing position sensor sealing gaskets, used for valve sealing;

Connection components: bolts and nuts at various positions, used for connection of various components of the valve;

Conduit components: conduit, conduit support ring, used to support the retractable expansion tube assembly; at the same time conduit, optional installation of open position and close position sensor components.

Among them, the conduit components: conduit, conduit support ring, are used for support, and the support principle is the same as that of the retractable lower pagoda joint support assembly;

The conduit assembly and the retractable lower pagoda joint support assembly replace each other and do not appear at the same time;

Select the retractable lower pagoda joint support assembly, do not install the conduit assembly, and the lower gland of the valve body generally does not have holes, and this assembly generally does not install the open position and close position sensor assemblies; in special cases, for example, the support rod of the assembly and The lower gland of the valve body is threadedly connected, one or more support rods, and the interior is hollow, and the opening and closing sensor components are installed. It is generally suitable for larger-diameter valves, with a diameter above DN200, saving material costs;

Select the conduit assembly, do not install the retractable lower pagoda joint support assembly, open the lower gland of the valve body, and optionally install the opening and closing sensor assemblies, or the valve plug, or the glass plug cover of the observation hole;

The above valve components form the basic valve structure and become the basic valve;

Valve accessory components:

Protection components: upper clamp protective sleeve, lower clamp protective sleeve, metal clamp and pagoda joint on the pagoda joint of the retractable expansion tube assembly

The protection of the lower metal clamp;

Open position and closed position sensor components: including sensor components installed in different valve component positions, used to detect the working status of the valve;

Anti-stacking components, including: funnel-shaped interface, anti-stacking conduit, conduit connector, and outlet extension tube assembly;

base valve, optional,

One or several or all of the above-mentioned auxiliary components are installed;

Or a part of the components installed with one or several or all of the subsidiary components;

Or one or more of the auxiliary components are completely installed, and a part of one or more of the auxiliary components is installed at the same time.

The auxiliary components of the above-mentioned valves improve the functions of the basic valves, realize the protection of the components, realize the control of the equipment on the valves, and realize the smooth operation of the valves, such as anti-stacking components and conduit component supports, and realize special processes, such as powder. Protection runs.

The inside of the valve body of the valve body assembly is a cavity, and a retractable expansion tube assembly is installed inside the cavity; when the expansion tube valve seat of the retractable expansion tube assembly is not inflated or not filled with liquid, the valve body cavity There is an annular cavity in the body, and the medium circulates inside; after the expansion tube valve seat of the retractable expansion tube assembly is inflated or filled with liquid, the outer wall of the expansion tube valve seat is in close contact with the inner wall of the valve, forming the first valve seat contact Cavity to block the flow of medium, and at the same time, there is a second valve seat non-contact cavity on the upper side of the valve body cavity, and a third valve seat non-contact cavity on the lower side of the valve body cavity;

The retractable expansion tube assembly, the retractable lower pagoda joint support assembly of the fixed assembly, waits for the displacement of the movable moving assembly, and inserts it into the extension tube of the retractable lower pagoda joint valve seat of the moving assembly, and the moving assembly and The fixed components support each other, and the total length of the moving components is variable;

The moving component of the retractable expansion tube assembly is not inflated or not filled with liquid, and when the valve is fully open, its length is the minimum value. When the moving component of the retractable expansion tube assembly is inflated or the filling valve is closed, the retractable expansion tube valve The seat expands under pressure, the diameter becomes larger and the length increases, and when the maximum value of the input gas or liquid is reached, the valve seat and the valve body are tightly fitted, the valve is closed, and the length of the moving component of the retractable expansion tube assembly reaches the maximum value; The center point of the total length of the moving assembly of the retractable expansion tube assembly changes with the length change of the expansion tube seat under pressure and expansion, and the position of the center point of the expansion tube seat in the valve body cavity also changes accordingly;

That is, the center point of the moving component of the retractable expansion tube assembly has a motion offset during the opening and closing process of the valve. During the opening and closing process of the valve, the center point of the moving component of the retractable expansion tube assembly has different eccentric distances from the initial position. ;

The movement assembly of the retractable expansion tube assembly is connected with the catheter assembly.

The catheter assembly is inserted, and the retractable lower pagoda joint valve seat of the retractable expansion tube assembly moves inside the extension tube. The retractable expansion tube assembly and the catheter assembly support each other. The total length of the retractable expansion tube assembly can be change; the moving component of the retractable expansion tube assembly is not inflated or liquid-filled, and its length is the minimum value when the valve is fully open. When the moving component of the retractable expansion tube assembly is inflated or the filling valve is closed, the retractable expansion The valve seat of the tube expands under pressure, the diameter becomes larger and the length increases, and when the maximum value of the input gas or liquid is reached, the valve seat and the valve body are tightly fitted, the valve is closed, and the length of the moving component of the retractable expansion tube assembly reaches the maximum value ;The center point of the total length of the moving assembly of the retractable expansion tube assembly changes with the length change of the expansion tube seat under pressure and expansion, and at the same time the position of the center point of the expansion tube seat in the valve body cavity also changes accordingly. That is, the center point of the moving component of the retractable expansion tube assembly has a motion offset during the opening and closing process of the valve. During the opening and closing process of the valve, there are different eccentric distances between the center point of the moving component of the retractable expansion tube assembly and the initial position;

That is, the retractable expansion tube assembly movement assembly:

In the dynamic process of opening-closing or closing-opening, the total length of the moving components of the retractable expansion tube assembly changes, the minimum is when the valve is fully open, and the maximum is when the valve is fully closed;

In the dynamic process of opening-closing or closing-opening, the position of the center point of the moving assembly of the retractable expansion tube assembly changes dynamically;

In the dynamic process of opening-closing or closing-opening of the valve, the dynamic center point of the moving component of the retractable expansion tube assembly is relative to the center point of the original opening position or the original closing position of the moving component of the retractable expansion tube assembly, There is an eccentric distance;

In the process of opening-closing or closing-opening of the valve, the initial position of the center point of the movement component of the retractable expansion tube assembly has an eccentric distance relative to the final position.

The valve body assembly, wherein, the valve body, the upper flange of the valve body, the lower flange of the valve body, the medium inlet pipe, the medium inlet pipe flange, the medium outlet pipe, the medium outlet pipe flange, and the terminal spray pipe,

The above spare parts are combined into a valve body assembly M, wherein each spare part of the valve body assembly M,

Optionally, one-piece casting is adopted,

Optionally, each spare part is cast or machined separately, and then welded together, or connected together by bolts or threads;

Optionally, the upper gland of the valve body, the lower gland of the valve body, casting or machining;

Valve body assembly M, the connection form of each assembly is as follows;

Optional, one-piece casting and forming connection, after forming, some positions are machined to make it meet the valve standard connection or installation requirements, such as American standard or national standard connection standard;

Optionally, each spare part is cast or machined separately, and then welded together,

optional, by bolting the flanges together,

Optionally, screwed together.

The retractable expansion tube assembly,

Optionally, the retractable upper pagoda joint and the inner extension tube of the retractable upper pagoda joint valve seat are independent components;

Preferably, the inner retractable upper pagoda joint and the inner extension tube of the inner retractable upper pagoda joint valve seat are connected together and directly formed in one piece through machining or casting;

Optionally, the retractable lower pagoda joint and the inner extension tube of the retractable lower pagoda joint valve seat are independent components;

Preferably, the retractable lower pagoda joint and the inner extension tube of the valve seat of the retractable lower pagoda joint are connected together, and are directly formed in one piece through machining or casting;

The retractable expansion tube assembly includes:

Movement components: retractable expansion tube valve seat, upper metal clamp of pagoda joint, lower metal clamp of pagoda joint, retractable upper pagoda joint, retractable upper pagoda joint valve seat inner extension tube, retractable lower pagoda joint , Retractable lower pagoda joint valve seat inner extension tube;

Fixed components, retractable lower pagoda joint support components;

Preferably, the retractable upper pagoda joint is hollow inside, with internal and external threads or connecting screw holes, used to connect the inner extension pipe of the valve seat with the upper pagoda joint, used for air or liquid; it can be used to connect the valve seat of the expansion pipe ;When the retractable upper pagoda joint is connected with the valve seat of the expansion pipe, the joint is pagoda joint pattern, and the pagoda pattern connected by standard air pipe or hose is adopted;

Preferably, the inner extension tube of the retractable upper pagoda joint valve seat is hollow inside, with threads inside and outside; holes or grooves are processed, so that the gas or liquid entering can directly enter the valve seat of the expansion tube; there are threads inside and outside, used to connect the expansion tube Pipe valve seat; when the inner extension tube of the retractable upper pagoda joint valve seat is connected with the expansion pipe valve seat, the joint is pagoda joint pattern, and the pagoda pattern connected by standard air pipe or hose is adopted;

Preferably, the retractable lower pagoda joint is hollow inside, with internal and external threads or connecting screw holes, which are used to connect the inner extension pipe of the valve seat of the upper pagoda joint, and are used to connect the valve seat of the expansion tube; when the retractable lower pagoda joint When connecting with the valve seat of the expansion pipe, the connection is pagoda joint pattern, and the pagoda pattern connected by standard air pipe or hose is adopted;

Preferably, the extension tube inside the valve seat of the retractable lower pagoda joint is hollow inside, and has internal and external threads, which can be used to connect the valve seat of the expansion pipe; when connected with the valve seat, the valve seat contains parts inside, sealed, welded, and machined blind holes , and other forms, to isolate the gas or liquid inside the valve seat of the expansion tube, and play the role of isolating the medium and power source compressed air or hydraulic oil and other liquids;

Preferably, when the inner extension tube of the retractable lower pagoda joint valve seat is connected to the valve seat of the expansion pipe, the joint is pagoda joint pattern, and the pagoda pattern connected by standard air pipe or hose is used;

Preferably, the retractable lower pagoda joint has a hole inside, and the inside of the hole is processed with guide rails or guide grooves to guide the sliding of the retractable lower pagoda joint support assembly; it supports the valve seat of the expansion pipe;

Preferably, the retractable lower pagoda joint has a hole inside, and the inside of the hole is processed with a guide rail or a guide groove, which guides the guide tube assembly to slide; it supports the valve seat of the expansion tube;

Preferably, guide rails or guide grooves are processed inside the inner extension pipe of the valve seat of the retractable lower pagoda joint to guide the sliding of the support assembly of the retractable lower pagoda joint;

Preferably, the inner extension tube of the valve seat of the retractable lower pagoda joint has a hole inside, and the inside of the hole is processed with a guide rail or a guide groove to guide the guide tube assembly to slide; it supports the valve seat of the expansion tube;

Preferably, when the inner extension pipe of the valve seat of the retractable upper pagoda joint is connected to the retractable upper pagoda joint, it is connected to the inner side or the outer side of the upper pagoda joint;

Preferably, when the inner extension pipe of the valve seat of the retractable lower pagoda joint is connected with the retractable lower pagoda joint, it is connected to the inner side or the outer side of the lower pagoda joint;

Preferably, the inner extension tube of the retractable lower pagoda joint valve seat has an internal hollow structure, which is closed at the top of the valve seat, and the internal hollow is isolated from the inflation cavity inside the valve seat of the expansion tube; the internal hollow is used for connecting with the retractable lower pagoda joint The support component is connected or connected with the conduit component, and the hollow part structure includes: no slot or guide slot;

Preferably, the inner extension tube of the retractable lower pagoda joint valve seat or the retractable lower pagoda joint is installed with an induction ring near the side of the lower end cover;

The retractable expansion tube assembly, the upper pagoda joint at the intake end is fixedly connected with the valve body assembly, and the retractable lower pagoda joint valve seat inner extension tube and the retractable lower pagoda joint at the other end are inserted into the retractable lower pagoda joint. The pagoda joint support components are supported and slidably connected to each other, and the retractable lower pagoda joint support components are connected with the valve body lower gland of the valve body assembly; the above components cooperate with each other to form the support fit between the retractable expansion tube assembly and the valve body assembly.

Retractable lower pagoda joint support assembly, including: support rod, bottom support and support ring;

The retractable lower pagoda joint support assembly is connected with the valve body lower gland of the valve body assembly;

When the lower gland of the valve body is connected with it, the joint generally does not open a hole, and the connection between the lower gland of the valve body and the supporting component of the retractable lower pagoda joint is reserved for connection, such as threads or screws, but no holes are opened at the connection; The lower gland of the valve body is in a complete state and does not require additional sealing;

The retractable lower pagoda joint support component is connected with the lower gland of the valve body through threaded connection or screw connection, or directly welded on the lower gland of the valve body;

In the retractable lower pagoda joint support assembly, the support rods are solid or hollow inside with one or more rods, and multiple rods refer to a natural number greater than or equal to 1;

When using the retractable lower pagoda joint support assembly to connect the valve body assembly:

Preferably, the inner extension tube of the valve seat of the retractable lower pagoda joint is processed with guide rails or guide grooves, and when connected with the support assembly of the retractable lower pagoda joint, it is inserted and fitted for smooth sliding, and is supported by the retractable lower pagoda joint. The components cooperate to support and guide the valve seat of the expansion pipe;

Preferably, retractable type, the conduit is hollow, away from the closed structure of the lower gland end of the valve body, and the conduit has external threads for connecting the lower gland of the valve body;

Preferably, the inner extension tube of the retractable lower pagoda joint valve seat of the retractable expansion tube assembly is connected to the retractable lower pagoda joint support assembly, and the retractable lower pagoda joint support assembly includes: support rods, quantity is a natural number greater than or equal to 1, and the support rod base is connected with the support rod through threaded connection or welding; the support rod and the support rod base can also be integrally formed, cast or machined;

When the number of support rods is greater than or equal to 1, the setting position is at the position in contact with the inner wall of the inner extension tube of the valve seat of the retractable lower pagoda joint, and the outer diameter of the support rod is tangent to the inner diameter of the inner extension tube of the valve seat of the retractable lower pagoda joint , the center composed of multiple support rods is on the same axis as the center point of the inner diameter of the inner extension tube of the retractable lower pagoda joint valve seat;

Preferably, the retractable lower pagoda joint support assembly is directly connected to the lower gland of the valve body through threads, bolts or welding;

The support assembly of the retractable lower pagoda joint is connected with the lower gland of the valve body, and then inserted into the inner extension tube of the valve seat of the retractable lower pagoda joint. After insertion, there is a gap between each other. The support assembly slides in the extension tube in the retractable lower pagoda joint valve seat;

The components of the retractable expansion tube assembly, the central axes of the components are coincident, and there is a slight offset or inclination when subjected to the impact force of the medium, but they are still on an approximately coincident axis, which can overcome the force of the medium flow direction, and on the central axis slide.

The retractable upper pagoda joint of the retractable expansion tube assembly is connected to the upper end cover of the valve body, while the retractable lower pagoda joint support component is connected to the lower gland of the valve body, and the inner extension tube of the retractable upper pagoda joint valve seat is inserted into the retractable The inner extension tube of the valve seat of the lower pagoda joint;

The corresponding retractable expansion tube assembly and the valve body assembly are integrated together, and the axes of each assembly coincide to form an axis.

This axis is the connection line between the upper flange end cover and the lower flange end cover or the center point of the retractable expansion tube assembly. When the retractable expansion tube assembly and the valve body assembly are eccentric, that is, when the valve body centerline is offset, Take the eccentric line as the axis.

The retractable expansion tube assembly is deformed when it is opened and closed. When each assembly moves axially, it is not affected by its length change, and the axis is always consistent;

When the medium in the valve body circulates, the inflow pressure of the medium is applied to the retractable expansion tube assembly, and the retractable expansion tube assembly distributes this force to the upper gland of the valve body and the lower gland of the valve body, and finally distributes the inflow pressure of the medium to The valve body is used to support the retractable expansion tube assembly;

Each component of the retractable expansion tube assembly is preferably a cylindrical structure, and the cylindrical surface is used to support the indentation of the valve seat under the pressure of the medium inflow, so that when the valve is opened, it can resist the pressure of the medium inflow and support the valve seat;

When using conduit to connect the valve body assembly:

The retractable expansion tube assembly does not contain a fixed assembly; the fixed assembly, the retractable lower pagoda joint support assembly is replaced by a conduit assembly;

The retractable expansion tube assembly includes:

Movement components: retractable expansion tube valve seat, upper metal clamp of pagoda joint, lower metal clamp of pagoda joint, retractable upper pagoda joint, retractable upper pagoda joint valve seat inner extension tube, retractable lower pagoda joint , Retractable lower pagoda joint valve seat inner extension tube;

The catheter assembly includes: a catheter and a support ring;

The moving assembly of the retractable expansion tube assembly, the upper pagoda joint at the intake end is fixedly connected with the valve body assembly, the inner extension tube of the valve seat of the retractable lower pagoda joint at the other end and the retractable lower pagoda joint are inserted into the catheter assembly , supporting and slidingly connected to each other, the conduit assembly is connected to the lower gland of the valve body of the valve body assembly; the above-mentioned assemblies cooperate with each other to form a supporting fit between the retractable expansion tube assembly, the valve body assembly and the conduit assembly.

The inner extension tube of the retractable lower pagoda joint valve seat is inserted into the catheter assembly and slides inside;

The retractable expansion tube assembly, when connected with the catheter assembly,

The conduit assembly is connected to the lower gland of the valve body, and the lower gland of the valve body generally has holes;

The conduit assembly and the lower gland of the valve body are connected by threads or bolts, or directly welded on the lower gland of the valve body;

The inside of the connection between the conduit assembly and the lower gland of the valve body is closed by a valve plug or a sight glass observation hole element;

Inside the conduit assembly, optionally, open and close sensor assemblies are installed, and at this time the induction ring is installed on the inner extension tube of the retracted lower pagoda joint valve seat;

Preferably, the inner extension tube of the valve seat of the retractable lower pagoda joint is processed with guide rails or guide grooves. When connected with the conduit assembly, it is inserted and fitted to connect and slide smoothly. The support for the retractable expansion tube assembly is realized by cooperating with the conduit assembly and orientation;

Preferably, retractable type, the conduit is hollow, away from the closed structure of the flange lower gland end, and the conduit has external threads for connecting the flange lower gland;

Preferably, the inner extension tube of the retractable lower pagoda joint valve seat of the retractable expansion tube assembly is connected to the conduit assembly, the conduit assembly is a conduit or conduit support ring, and the conduit assembly is connected to the lower gland of the valve body;

The inner extension tube of the retractable lower pagoda joint valve seat is directly inserted into the conduit, or inserted into the conduit with the support ring installed. After insertion, there is a gap between each other. Sliding within the catheter assembly;

The central axis of the retractable expansion tube assembly and the conduit assembly are coincident, and there is a slight offset or inclination when subjected to the impact force of the medium, but they are still on an approximately coincident axis, which can overcome the force of the medium flow and slide on the central axis.

The retractable upper pagoda joint of the retractable expansion tube assembly is connected to the upper gland of the valve body. The extension tube in the valve seat of the contracted lower pagoda joint is inserted and connected, and can be inserted into each other;

The corresponding valve body components, the retractable expansion tube component and the conduit component are connected together, and the axial centerlines of each component coincide to form a central axis.

This axis is the connection line between the upper gland of the valve body and the lower gland of the valve body, the retractable expansion tube assembly and the central axis of the conduit;

When the central line of the retractable expansion tube assembly, the valve body assembly and the conduit assembly is eccentric, the eccentric line is used as the axis.

The retractable expansion tube assembly is deformed when it is opened and closed. When each assembly moves axially, it is not affected by its length change, and the axis is always consistent;

When the medium in the valve body circulates, the inflow pressure of the medium is applied to the retractable expansion tube assembly, and the retractable expansion tube assembly distributes this force to the valve body gland and conduit assembly, where the conduit assembly is transmitted to the valve body to press down. Cover, and finally distribute the inflow pressure of the medium to the valve body to realize the support for the retractable expansion tube assembly;

Each component of the retractable expansion tube assembly is preferably a cylindrical structure, and the cylindrical surface is used to support the indentation of the valve seat under the pressure of the medium inflow, so that when the valve is opened, it can resist the pressure of the medium inflow and support the valve seat;

The retractable lower pagoda joint support component is connected with the lower gland of the valve body, and the connection methods include threaded connection, bolted connection, flanged connection, welding and other methods;

When the retractable lower pagoda joint support assembly is connected to the lower gland of the valve body:

The lower gland of the valve body is preferably not opened;

Under special circumstances, the lower gland of the valve body can be opened. At this time, the lower end cover of the valve body needs a valve plug or a visual glass observation hole plug to block the opening to avoid pressure leakage. The hole is opened for testing.

Preferably, the retractable lower pagoda joint support assembly includes: a support rod, a support rod base;

When the inside of the support rod is hollow, the top end is not closed, and the connection with the lower gland of the valve body is closed;

Preferably, there are no grooves or holes on the outer wall of the support rod;

Optionally, grooves or holes are formed on the outer wall of the support rod;

And when it is hollow, there is a card slot or thread or screw hole inside, and the hollow inside is used to connect the open position sensor and the close position sensor, and it is closed by a valve plug or a plug when connected to the base of the support rod;

When the support rod is solid, there are two types of outer wall, slotted or not slotted;

When the support rod is a plurality of independent rods, the support rod, optionally, choose the above-mentioned hollow or solid form, or the combination mode of hollow and solid, and the number of support rods is N, and N is a natural number greater than 1;

Preferably, the support rod has a thread at the end of the rod for connecting the lower gland of the valve body or the base of the support rod, and its function is to support the retractable expansion tube assembly;

When the retractable expansion tube assembly is connected with the catheter assembly;

The catheter assembly includes: a catheter, a catheter support ring;

The working principle is the same as the retractable lower pagoda joint support component, which is connected with the lower gland of the valve body. At this time, the lower gland of the valve body is opened, and the connection method is threaded connection, bolted connection or flanged connection;

The conduit and the conduit support ring are used for support, and the retractable lower pagoda joint supports the assembly;

Preferably, the conduit is hollow and away from the closed structure of the end cap, and the conduit has external threads for connecting the lower gland of the valve body;

Preferably, there are slots or threads or screw holes inside the conduit, and the hollow interior thereof is used to install open position sensors and close position sensors, and install valve plugs at the bottom, or visual glass observation elements;

Preferably, the outside of the catheter is processed with a slot or threaded hole or a connection platform reserved for connecting the catheter support ring;

Preferably, grooves or guide rails are processed on the outside of the catheter for sliding of the expansion tube assembly;

Preferably, the conduit support ring is processed with grooves or guide rails for the expansion tube assembly to slide;

Conduit support ring, retractable, set on the conduit, or on the inner extension pipe of the lower pagoda joint valve seat of the retractable type, used to support the outwardly extending expansion tube assembly, and does not hinder the sliding of each component;

The valve body assembly is fixedly connected with the retractable upper pagoda joint to form a support for the valve seat of the expansion pipe;

The inner extension tube of the retractable upper pagoda joint valve seat and the inner extension tube of the retractable lower pagoda joint valve seat are inserted into each other and slide smoothly to form a support for the valve seat of the expansion tube;

The inner extension tube of the retractable lower pagoda joint valve seat and the retractable lower pagoda joint support assembly are inserted and matched with each other, and slide smoothly to form a support for the expansion pipe valve seat;

The inner extension pipe of the valve seat of the retractable lower pagoda joint and the conduit assembly are inserted and matched with each other, and slide smoothly to form a support for the valve seat of the expansion pipe;

The retractable lower pagoda joint support assembly is fixedly connected with the valve body assembly to form a support for the valve seat of the expansion pipe;

Through the connection and cooperation of the retractable expansion tube assembly, the conduit assembly and the valve body assembly, each component can support and guide the expansion tube valve seat assembly;

The maximum outer diameter of the above-mentioned retractable expansion tube assembly, the connection assembly and the protection assembly used for the expansion tube assembly is smaller than the inner diameter of the valve;

Preferably, the inner extension pipe of the valve seat of the retractable lower pagoda joint is processed with a guide rail or a guide groove. When connected with the catheter assembly, it is inserted into a fit connection and slides smoothly, and the expansion pipe valve seat is supported and guided by cooperating with the catheter assembly. ;

Preferably, the inner extension tube of the retractable lower pagoda joint valve seat of the retractable expansion tube assembly is connected to a part of the conduit assembly, and the conduit assembly is a conduit or a conduit support ring;

The inner extension tube of the retractable lower pagoda joint valve seat is inserted and matched with the catheter, or inserted and matched with the catheter with the support ring installed. After insertion, there is a gap between each other. extension tube slide;

However, the central axis of the retractable expansion tube assembly and the conduit assembly are coincident, and there is a slight offset or inclination when subjected to the impact force of the medium, but they are still on an approximately coincident axis, which can overcome the force of the medium flow and slide on the central axis .

The retractable expansion tube assembly is connected to the upper gland of the valve body, and the conduit assembly is inserted at the same time. The corresponding valve body assembly, retractable expansion tube assembly and conduit assembly are connected together. The center points of each component overlap to form a central axis.

This axis is the connecting line between the upper gland of the valve body and the lower gland of the valve body, the center point of the conduit assembly and the retractable expansion tube assembly;

When the retractable expansion tube assembly and the conduit assembly are eccentric to the center line of the valve body assembly, take the eccentric line as the axis.

The retractable expansion tube assembly is deformed when it is opened and closed. When each assembly moves axially, it is not affected by its length change, and the axis is always consistent;

When the medium in the valve body circulates, the inflow pressure of the medium is applied to the retractable expansion tube assembly, and the retractable expansion tube assembly distributes this force to the valve body gland and conduit assembly, where the conduit assembly is transmitted to the valve body to press down. Cover, and finally distribute the inflow pressure of the medium to the valve body to bear, so as to realize the support for the retractable expansion tube assembly;

Each component of the retractable expansion tube assembly is preferably a cylindrical structure, and the cylindrical surface is used to support the indentation of the valve seat under the pressure of the medium inflow, so that when the valve is opened, it can resist the pressure of the medium inflow and support the valve seat;

Preferably, the valve seat of the retractable expansion tube is cylindrical;

Preferably, the retractable upper pagoda joint, the internal extension tube of the valve seat of the retractable upper pagoda joint, the retractable lower pagoda joint, and the internal extension tube of the valve seat of the retractable lower pagoda joint are cylindrical;

The retractable expansion tube valve seat is covered by the retractable upper pagoda joint, the retractable upper pagoda joint valve seat inner extension tube, the retractable lower pagoda joint, the retractable lower pagoda joint valve seat inner extension tube and other components the outer cladding contact surface;

The inner diameter of the retractable expansion tube valve seat is larger than that of the retractable upper pagoda joint, the internal extension pipe of the retractable upper pagoda joint valve seat, the retractable lower pagoda joint, and the internal extension pipe of the retractable lower pagoda joint valve seat. the diameter of the cladding;

Preferably, the conduit and the conduit support ring are used to support the inner extension pipe of the retractable lower pagoda joint valve seat;

Preferably, there are slots or threads or screw holes inside and outside the conduit, which are used to connect the opening sensor and the closing sensor, or the valve plug, or an isolation glass visual element with an isolation function to observe the medium;

Preferably, the inside of the catheter is processed with a slot or threaded hole or a connection platform reserved for connecting the catheter support ring;

Preferably, grooves or guide rails are processed inside the catheter for sliding the retractable expansion tube assembly;

Preferably, the catheter support ring is processed with grooves or guide rails for sliding the retractable expansion tube assembly;

Preferably, the conduit is hollow and has internal and external threads when it is full-bore, away from the valve seat end of the expansion tube for connecting a closing position sensor or a valve plug or a visual glass observation element;

Preferably, the inside of the conduit is processed with grooves or threaded holes or a connection platform is reserved, and the non-media contact side is used for sensor connection;

The valve body assembly is fixedly connected with the retractable upper pagoda joint to form a support for the valve seat of the expansion pipe;

The inner extension tube of the retractable upper pagoda joint valve seat and the inner extension tube of the retractable lower pagoda joint valve seat are inserted into each other and slide smoothly to form a support for the valve seat of the expansion tube;

The inner extension pipe of the retractable lower pagoda joint valve seat and the conduit assembly or the retractable lower pagoda joint support assembly are inserted and matched with each other, and slide smoothly to form a support for the expansion pipe valve seat;

The support and guidance of the valve seat assembly of the expansion pipe are realized through the cooperation of the retractable expansion pipe assembly, the conduit assembly and the valve body assembly;

The maximum outer diameter of each spare part of the above-mentioned retractable expansion tube assembly is smaller than the inner diameter of the valve;

For the retractable expansion tube assembly, the connection assembly, sealing assembly, protection assembly, and directly connected with the retractable expansion tube assembly, the maximum outer diameter of the open position and close position sensor components inside the valve body assembly is less than inner diameter of the valve;

the open and close sensor assemblies,

Optionally, the open position sensor 1 and the closed position sensor 1 and the air guide tube are arranged on the retractable expansion tube assembly, and are connected internally and externally through the holes reserved for the upper pagoda joint of the retractable expansion tube assembly, and the holes are threaded;

The opening sensor 2 is arranged on the conduit assembly and connected to the conduit. Optionally, the connection methods include: bolt connection, thread connection, and reserved card slot insertion;

The close position sensor is connected to the upper cover of the close position sensor. Optionally, the connection methods include: bolt connection, thread connection, and reserved card slot insertion;

The closing position sensor 2 is arranged on the valve body assembly, and the base is connected with the valve body, optionally, it is fixedly connected by welding or reserved by casting;

The upper cover of the close position sensor is connected to the base of the close position sensor. Optionally, the connection methods include: bolt connection, thread connection;

The catheter opening sensor 3 and the catheter closing sensor 3 are arranged on the catheter assembly and connected to the catheter. Optionally, the connection methods include: bolt connection, thread connection, and insertion into a reserved card slot.

The open position and close position sensor components are used as auxiliary components, and one or two or all of them can be installed optionally, or they can not be installed.

The induction ring is connected to the lower pagoda joint of the retractable expansion tube assembly or the inner extension pipe of the lower pagoda joint. Optionally, the connection methods include: bolt connection, thread connection, reserved card slot insertion, interference fit connection;

The valve plug is connected to the conduit, optionally, by threaded connection or bolted connection;

The installation position of the sensor base is on the outer wall of the valve in the area where the first valve seat contacts the cavity. There is a sealing component when the valve body opening is connected to the sensor base. There is no sealing component when the valve body is connected to the sensor base without openings. Body welded connections or casting reservations;

The sealing assembly includes sealing gaskets or sealing strips, sealing rings, etc. required for the sealing of various parts, and is deformed by crimping to achieve a sealing effect.

The connecting components include connecting parts such as bolts, nuts, and screws, which are used to connect components in various parts.

The protective assembly includes the upper clamp protective sleeve and the lower clamp protective sleeve, which are tightened by virtue of their own elasticity and are placed on the metal clamp on the pagoda joint and the metal clamp below the pagoda joint to realize the connection between the clamp and the medium. Isolate and protect the clamp, reduce the wear or corrosion speed of the clamp, increase the service life, elastic connection, and the protection component are optional components, which can be installed or not installed according to the actual situation.

The catheter assembly includes: a catheter, a catheter support ring;

The conduit is connected to the lower gland of the valve body. Optionally, the connection methods include: threaded connection, bolted connection, and welded connection;

When the conduit is connected to the open or close sensor assembly, options include: threaded connection, reserved screw hole connection, flange connection, reserved card slot connection, interference fit connection, etc.;

Conduit, optional, its interior is hollow, the top end enters the valve body and the position is closed, and a hole is reserved at the bottom of the interior, and the interior of the hole is optionally reserved for threads, screw holes, or installation grooves; optional, it is reserved for sealing the valve plug Threads, screw holes, flanges, etc.;

The outside of the conduit is processed with grooves or threaded holes or a reserved connection platform to connect with the open or close sensor components. Optionally, the connection methods include: bolt connection, thread connection, reserved card slot insertion, interference connection, etc.;

The optional conduit is machined with grooves or guide rails for connection with retractable expansion tube assemblies;

The conduit support ring is optionally installed on the outside of the conduit, that is, the side in contact with the medium, to support the expansion pipe assembly according to the retractable type;

The protection components include: upper clamp protective sleeve, lower clamp protective sleeve;

The upper clamp protective sleeve of the protection component is elastically connected to the metal clamp on the pagoda joint, and the lower clamp protective sleeve is elastically connected to the lower metal clamp of the pagoda joint;

Anti-stacking components include: funnel-shaped interface, anti-stacking conduit, conduit connector, and outlet pipe extension assembly;

Anti-stacking components, optional, install all or part of the components;

When the anti-stocking assembly is connected to the valve body, optional, including:

The anti-stacking component is directly welded to the valve body;

Or open a hole in the valve body, the hole is processed and welded with a protruding platform, the platform is a geometric shape;

Links include:

When the protruding platform of the valve body is round, it is processed with internal and external threads, and the funnel-shaped interface is connected through threads or threaded holes are processed on the platform. The connection methods include: threaded connection and bolted connection;

When the valve body platform is other geometric shapes, square, square with chamfer, ellipse, polygon; through the reserved bolt hole position and the connection funnel-shaped interface, it is connected by bolts.

The medium outlet straight extension pipe set or the medium outlet elbow extension pipe set of the anti-pilling component is optional, including:

When the straight extension pipe group of the medium outlet pipe or the elbow extension pipe group of the medium outlet pipe is connected with other anti-stacking components, they shall be directly welded;

Or the straight extension pipe group of the medium outlet pipe or the elbow extension pipe group of the medium outlet pipe is opened, and the hole is processed and welded to a protruding platform. The platform is a geometric shape, including: round, square, square with chamfer, ellipse, polygon;

The connection methods include: the straight extension pipe group of the medium outlet pipe or the elbow extension pipe group of the medium outlet pipe, when the protruding platform is round, it contains internal and external threads, and the funnel is connected by threaded connection, or the threaded hole is processed on the platform; optional, including Bolted or threaded connections;

When the reserved platform of the anti-stacking component is other geometric shapes: square, square with chamfer, ellipse, polygon, through the reserved bolt hole position and the connection funnel interface, optional, including bolt connection or thread connection;

Optionally, the funnel-shaped interface is reserved with threads or threaded holes or flanges, and there is a platform or flange at the connection position with the anti-stockpiling conduit group, which is processed with threads or screw holes. Optionally, the connection methods include: welding connection, Threaded connection, bolted connection, flanged connection.

Optionally, the funnel-shaped interface is reserved with threads or threaded holes or flanges, and there is a platform or flange at the connection position with the valve body assembly, which is processed with threads or screw holes. Optionally, the connection methods include: welding connection, threaded connection , Bolt connection, flange connection.

The anti-stacking conduit group has threads or flanges, and when it is connected to the funnel interface, it is optional, including: direct welding; the connection part is processed with threads, connected through pipe joints, etc., and the connection method is threaded connection; or flange connection.

When the anti-stacking conduit group is connected to the conduit joint, it is optional, including: direct welding; the connection part is processed with threads, connected through pipe joints, and the connection method is threaded connection; or flange connection.

Optionally, the conduit connector has threads or reserved screw holes or flanges. When connecting to the anti-stocking conduit group, the optional connection methods include: welded connection, threaded connection, bolted connection, and flanged connection.

Optionally, the straight extension pipe set of the medium outlet pipe or the elbow extension pipe set of the medium outlet pipe has a connection hole with a funnel-shaped interface reserved, which can be directly connected to the funnel-shaped interface;

Optionally, the straight extension pipe group of the medium outlet pipe or the elbow extension pipe group of the medium outlet pipe has a connection hole reserved for the anti-stacking conduit, which can be directly connected to the anti-stacking conduit;

Optionally, the straight extension pipe set of the medium outlet pipe or the elbow extension pipe set of the medium outlet pipe are integrally formed by casting or machined, and the reserved connection holes have screw holes and sealing ring grooves;

After the expansion tube valve seat of the retractable expansion tube assembly is inflated by an automatic power source or filled with liquid, the outer wall of the expansion tube valve seat is in close contact with the inner wall of the valve to form a first valve seat contact cavity to block the flow of the medium. At the same time, there is a second valve seat non-contact cavity on the upper side of the valve body cavity, and a third valve seat non-contact cavity on the lower side of the valve body cavity;

The retractable expansion tube assembly inside the valve body, when the valve is opened and closed, the retractable expansion tube assembly is matched with the fixed components of its own parts, or the catheter assembly; the total length of the moving components of the retractable expansion tube assembly is variable. When the moving component of the retractable expansion tube assembly is not inflated and the valve is open, its length is the minimum value. When the moving component of the retractable expansion tube assembly is inflated with air or liquid and the valve is closed, the deformed length of the moving component of the retractable expansion tube assembly Increase, when the set maximum value is reached, the valve seat of the expansion tube is tightly combined with the valve body, and the valve is closed. At this time, the length of the moving component of the retractable expansion tube assembly reaches the maximum design value; because there is an extension space in the axial direction of the expansion tube valve seat, The valve seat of the expansion tube will not be squeezed to form wrinkles inside the valve body;

The center point of the total length of the moving components of the retractable expansion tube assembly changes with the length change caused by the expansion of the expansion tube valve seat, and the position of the center point in the valve body cavity also changes accordingly. The center point of the moving components of the expansion tube assembly is at There is movement eccentricity during the opening and closing of the valve.

When the valve is completely closed, because the anti-stacking component or the medium discharge pipe group at the position of the second valve seat non-contact chamber and the third valve seat non-contact chamber are connected and connected with the pipeline equipment, the outlet side is subjected to the suction pressure of the outlet end Under the action, a part of the internal medium will be sucked out and reach internal equilibrium. When the valve is opened, the medium will also flow through this hole to the outlet output position. This process will cycle with the valve opening and closing process, and there will be a small amount of accumulation, but the continuous accumulation of medium materials is avoided. Finally, the displacement of the retractable expansion tube assembly is hindered, and the sealing performance of the valve will not be affected, nor will the valve seat of the expansion tube be deformed and invalidated by the accumulated material. After the aforementioned process, the valve is inflated, deflated or filled and discharged under the control of the automatic control system, and the valve seat of the expansion pipe returns to the initial state under the action of its own elastic force, waiting for the next working cycle.

After the medium inlet pipe group and the medium outlet pipe group are connected on the valve body, consider if the medium inlet pipe group and the medium outlet pipe group are both in the second valve seat non-contact chamber or the third valve seat non-contact chamber of the valve body Outside, it will cause medium leakage and cannot be sealed. To avoid this situation, the valve contains the following features:

After any inlet pipe of the valve body assembly fully or partially intersects with the second valve seat non-contact chamber, the valve body area of the second valve seat non-contact chamber no longer has any outlet pipe that completely or partially intersects with it. intersect;

After any inlet pipe of the valve body assembly fully or partially intersects with the third valve seat non-contact chamber, the valve body area of the third valve seat non-contact chamber no longer has any outlet pipe that completely or partially intersects with it. intersect;

After any outlet pipe of the valve body assembly fully or partially intersects with the second valve seat non-contact chamber, the valve body area of the second valve seat non-contact chamber no longer has any inlet pipe with it in whole or in part. intersect;

After any outlet pipe of the valve body assembly fully or partially intersects with the third valve seat non-contact chamber, there is no longer any inlet pipe wholly or partly connected to the valve body area of the third valve seat non-contact chamber. intersect;

Considering the different application environments of the valve, the centerline of the inlet pipe, the centerline of the outlet pipe and the centerline of the valve body, the centerline of the inlet medium, the centerline of the outlet medium and the centerline of the valve seat of the expansion pipe, the spatial relationship includes the following characteristics:

The diameter of the inlet pipe is less than or equal to the diameter of the valve body, there is an angle α between the center line of the inlet pipe and the center line of the valve body, the angle α is greater than 0 degrees, less than 360 degrees, and not equal to 180 degrees, and the number of inlet pipes is M, and M is greater than or equal to 1;

The diameter of the outlet pipe is less than or equal to the diameter of the valve body, the centerline of the outlet pipe and the centerline of the valve body have an included angle β, the included angle β is greater than 0 degrees and less than 360 degrees, and is not equal to 180 degrees, and the number of outlet pipes is N, and N is greater than or equal to 1;

The valve seat of the expansion pipe, the outer diameter of the valve seat of the expansion pipe is smaller than the inner diameter of the valve,

There is an included angle γ between the centerline of the valve seat of the expansion pipe and the centerline of the medium entering the pipe, and the included angle γ is greater than 0 degrees and less than 360 degrees, and is not equal to 180 degrees;

There is an included angle δ between the centerline of the valve seat of the expansion pipe and the centerline of the outlet medium, and the included angle δ is greater than 0 degrees and less than 360 degrees, and is not equal to 180 degrees.

When the invention of this case, when the valve takes the powder medium,

Optional anti-stack assembly connection setup locations include:

The position of the non-contact chamber of the second valve seat and the non-contact chamber of the third valve seat;

Or the position of the medium outlet pipe group;

Optionally, part of the component interface of the anti-stacking component or the connected valve body component interface has a hole, and the outer dimension of the hole matches the shape of the funnel-shaped interface group. The connection methods include:

direct solder connection;

Or casting connection outer frame on the valve body assembly, process threaded holes or threads on the frame, and connect with the anti-stacking assembly through bolts or threads;

The centerline of the valve seat of the expansion tube coincides with or is parallel to the centerline of the cavity of the valve body, and the expansion tube assembly is contained in the cavity of the valve body.

The connecting component is connected with other components through bolts, screw rods, nuts or threads processed by the spare part of the connecting component itself.

The sealing assembly is elastically deformed by the compressive force through the gasket to realize sealing.

Optionally, the connection methods of components at different positions of the valve body include: threaded connection of connection components, welding connection, reserved card slot connection

Optionally, the sealing of different positions of the valve body is realized by sealing components, and the connecting components or the threads of other components are connected and fastened at different positions during connection.

Optionally, the threaded connections of the spare parts, when the threads need to be sealed, shall be sealed in the form of taper pipe threads or threads with coatings or winding tapes.

Optionally, the retractable expansion tube assembly is connected with other spare parts through a connection assembly, and the seal is realized through a sealing assembly.

Optionally, for the valve body assembly, its medium inlet pipe group is connected to the valve body through welding or integral casting, and is connected to other equipment or pipelines through flange connection, welding connection or screw connection; its medium outlet pipe group is connected to the valve body The body is connected by welding or integral casting, and is connected with other equipment or pipelines by flanges, welding or threads; its parts are connected with other spare parts through connecting components, and sealed by sealing components.

Optionally, according to different working conditions, the parts of the valve body component in contact with the medium are left untreated, or coated, rubber-lined or plastic-lined. The coating includes: Anti-corrosion paint, epoxy resin coating, Teflon, PTFE coating, nylon, ceramic coating, direct coating can meet the needs of special media such as magnetic media, corrosive media, oily media and other special needs; also include Coating, including a metal film with a coating thickness of less than 1mm or a film layer of other materials, or a metal coating treatment, such as chrome plating and galvanizing, etc., for the treatment of the medium contact surface, the main feature is to add an attachment coating on the medium contact surface of the valve body , to avoid wear or corrosion; anti-corrosion surface treatment can also be done on the medium contact surface, such as bluing, blackening, phosphating, passivation treatment, etc.;

The treatment of all the valve components mentioned above, the parts in contact with the medium inside include:

The medium contact surface inside the valve is not treated;

Or make an attachment layer or coating on the medium contact surface inside the valve;

Or do anti-corrosion surface treatment on the medium contact surface inside the valve;

Optionally, the open position or close position sensor assembly has threads or slots, and is connected with other components or spare parts through threads or slots.

Optionally, the open position sensor or the close position sensor can be replaced by a valve plug, and the valve plug has threads, screw holes or slots reserved.

Optionally, the base of the closing position sensor is welded on the valve body. Optionally, the base of the closing position sensor is reserved for threads or screw holes or card slots;

Optionally, the components of the open position sensor and the closed position sensor component are connected by bolts, threads or card slots, and sealed by a sealing component.

The open position and close position sensor components include:

Open position and close position sensor 1: Set on the retractable upper pagoda joint, the position where the upper pagoda joint exposes the outside of the valve body opens a hole,

The hole does not affect the position where the gas source is connected to the inlet pipe. The hole can be directly connected to the inside of the upper pagoda joint, or it can be connected to the position between the valve seat of the expansion tube and other components of the expansion tube; it can also be extended to the upper pagoda joint through the air guide tube Inside the extension tube inside the valve seat, the air guide tube is installed at a position that does not affect the displacement of the retractable expansion tube assembly during ventilation and exhaust, such as the centerline position of the retractable expansion tube assembly; the air guide tube can optionally enter the retractable upper pagoda Inside the extension tube of the valve seat of the joint or retractable upper pagoda joint; the air guide tube is connected to the opening and closing position sensor 1, preferably relying on the pressure change or the internal displacement position feedback of the retracting expansion tube assembly to feedback the opening and closing positions; the above Open or closed position sensor, optionally triggered by mechanical contact or inductive contact, can also trigger feedback through known technical methods, such as pressure, light sensing, etc.;

Open position and close position sensor 2: close position sensor 2, close position sensor 2 base, close position sensor 2 base cover, installed on the valve body; open position sensor 2, set on the conduit, retractable inside close to the expansion tube One side of the valve seat assembly, the other side is sealed by the valve plug; the above-mentioned open position or close position sensor can be triggered optionally by mechanical contact or inductive contact, or by known technical means, such as pressure, light sensing, etc. feedback;

Opening and closing position sensor 3: induction ring, set on the extension tube in the retractable lower pagoda joint or the valve seat of the retractable lower pagoda joint, conduit open position sensor 3, conduit close position sensor 3, suitable for conduit mode, The open position and close position sensors are arranged inside the conduit, and the conduit is reserved with connection methods such as card slots or threaded or bolted connections, which can optionally be triggered by mechanical contact or inductive contact, and can also be triggered by known technical methods, such as pressure, light, etc. Sense and other ways to trigger feedback;

The open position and close position sensor components are divided into the above three types. In this case, one of them can be installed optionally, or two of them can be installed, or all three can be installed, or neither can be installed;

Open position and close position sensor components are used to feedback the signal of the valve;

Install the base of the relative position sensor 2 on the valve body assembly, the sensor base reserves screw holes and card slots, the connection methods of the closed position sensor 2 and the sealing assembly include: bolt connection, card slot connection, thread connection, flange connection; sensor base installation The position is on the outer wall of the valve in the area where the first valve seat contacts the cavity. There is a sealing component when the opening of the valve body is connected to the sensor base. There is no sealing component when the valve body is connected to the sensor base without openings. The sensor base is welded to the valve body. or casting reservation;

Optionally, the induction ring is installed on the retractable lower pagoda joint or the inner extension tube of the valve seat of the retractable lower pagoda joint;

Optionally, when the valve body is welded and installed with a close position sensor base, according to different sensors, it includes:

The opening form of the valve body, when the valve body is opening, there is a sealing component to seal, and it is connected by a connecting component.

Or the valve body does not have a hole, and is connected through a connecting component through a reserved thread or a screw hole or a card slot.

Optionally, the metal clamp on the pagoda joint and the metal clamp below the pagoda joint are elastically connected and protected by an elastic protection component.

Optionally, the terminal spray pipe is welded on the valve body, the spray pipe has holes, and the medium flows out from it, the terminal spray pipe is generally used for the laminar flow cooling process in steel mills or other spray water processes, and the medium is generally water , the spray pipe is used as the terminal. When the valve is closed, the water flow is closed. When it is opened, the water flow is sprayed out along the small hole of the spray pipe, and the steel that needs to be cooled or other items that need to be sprayed is sprayed to realize the design function. The number of spray pipes is N, and N is a natural number greater than or equal to 1.

Compared with the prior art, the beneficial effect of this scheme is:

1. When the valve is in the open position, the medium pressure in the pipeline acts on the valve seat of the expansion tube, and the valve seat of the expansion tube will be affected by the pressure. At this time, the pressure will be transmitted to the moving component of the retractable expansion tube assembly: retractable The retractable upper pagoda joint, the retractable upper pagoda joint valve seat inner extension tube, the retractable lower pagoda joint, and the retractable lower pagoda joint valve seat inner extension tube of the expansion tube assembly, the above spare parts are connected into one; the movement component Connect the fixed component to the retractable lower pagoda joint support component, or the moving component to connect the conduit component; at the same time connect the valve body component;

Various components, including: moving components, fixed components, conduit components, and valve body components, are connected to form a whole. When the valve seat of the expansion pipe is recessed inward, it is supported by these components, which reduces the degree of indentation and provides support for the valve seat. , to avoid severe deformation of the valve seat of the expansion tube, thereby reducing the change in the flow form of the medium in the valve body cavity, alleviating the fluctuation of the medium pressure, and keeping it within the acceptable range.

2. When the valve is in the open position, the medium pressure in the pipeline acts on the valve seat of the expansion tube, and the valve seat of the expansion tube will be affected by the pressure. At this time, the pressure will be transmitted to the internal components of the retractable expansion tube assembly. Retractable upper pagoda joint, retractable upper pagoda joint valve seat inner extension tube, retractable lower pagoda joint, retractable lower pagoda joint valve seat inner extension tube, retractable lower pagoda joint support assembly of the expansion tube assembly , forming one body, when the valve seat of the expansion pipe is sunken inward, it is supported by these components, which reduces the degree of indentation, provides support for the valve seat, avoids the concave of the valve seat of the expansion pipe, and avoids the end of the valve seat, that is, the valve seat and the valve seat The pagoda joint or extension tube connection of the retractable expansion tube assembly produces stress in different directions under the action of medium pressure, thereby avoiding partial cracking of the valve seat and increasing the life of the valve seat.

3. When the valve is closed, the valve seat of the expansion tube is inflated and deformed, its diameter becomes larger, and its total axial length will also increase. This increase will cause deformation of the valve seat of the expansion tube, resulting in wrinkles at the contact position of the valve body; through The design of the expansion tube assembly is changed, and the retractable expansion tube assembly is adopted to realize the displacement of the center of the moving component of the retractable expansion tube assembly. The displacement process not only realizes sealing but also solves the problem of deformation and wrinkles of the expansion tube valve seat.

4. When the valve medium inlet pipe group and medium outlet pipe group are located in the contact chamber of the first valve seat, the valve will carry powder or fine particles, and when compressed gas is used to transport, the second valve seat on the upper side of the valve body cavity is non-contact. cavity, and the non-contact cavity of the third valve seat on the lower side of the valve body cavity, there will be a certain amount of material accumulation, which will affect the expansion of the valve seat of the expansion pipe and affect the performance of the valve; , but under the action of system suction and conveying pressure, the piled material is sucked out, which will reduce the accumulation amount, and during the cycle opening and closing process of the valve, the continuous flow will be output to the pipeline, and the accumulation amount will be greatly reduced, avoiding the accumulation of material on the valve performance impact.

Description of drawings

Fig. 1 is the retractable type of this scheme, the schematic diagram of the valve structure;

Fig. 2 is the retractable type of this scheme, the structural representation of embodiment 1, front view;

Fig. 3 is the retractable type of this scheme, the structural representation of embodiment 1, left side view;

Fig. 4 is the retractable type of this scheme, the structural representation of embodiment 1, top view;

Fig. 5 is a comparison diagram of expansion and non-expansion states of the valve seat of the expansion pipe along the E-E line in the top view of Fig. 4, and the change of the expansion pipe assembly;

Figure 6 shows when the valve is opened, the position of retractable type: upper pagoda joint, inner extension tube of upper pagoda joint valve seat, retractable lower pagoda joint, inner extension tube of retractable lower pagoda joint, position of support rod of retractable lower pagoda joint schematic diagram.

Figure 7 shows when the valve is closed, the retractable type: the position of the upper pagoda joint, the inner extension tube of the valve seat of the upper pagoda joint, the retractable lower pagoda joint, the inner extension tube of the retractable lower pagoda joint, and the position of the support rod of the retracted lower pagoda joint schematic diagram.

Fig. 8 and Fig. 9 are main top views of different design structures of extension pipes in the valve seat of the retractable upper pagoda joint valve seat;

Fig. 10 Fig. 11 is the main top view of the different design structures of the extension pipe in the lower pagoda joint of the retractable type;

Fig. 12, Fig. 13, Fig. 14 and Fig. 15 are main top views of different design structures of the pagoda joint support rods retracted;

Figure 16 is a schematic diagram of the connection between the sensor and the upper pagoda connector;

Figure 17 is the main top view of the retractable upper pagoda joint;

Fig. 18 is the main top view of the retractable lower pagoda joint;

Fig. 19 is a schematic diagram of embodiment 2 terminal multi-pipe spraying;

Fig. 20 is a schematic diagram of the shrinkage type of this program, and the angle description; embodiment 3 different sides of the inlet and outlet pipes;

Fig. 21 is a schematic diagram of the retractable expansion tube assembly of the solution, embodiment 4, the inlet and outlet tubes are on the same side, and the retractable expansion tube assembly is eccentric.

Figure 22 is a schematic diagram of the retractable type of this scheme, embodiment 5, two in and one out, the inwardly retractable expansion tube assembly is eccentric, and the anti-stacking assembly is provided;

Figure 23 is a schematic diagram of the shrinking type of this program, embodiment 6, entering and exiting the opposite side, entering and exiting out of the same center, and the center line of the valve body is inclined;

Figure 24 is a schematic diagram of the shrinking type of this scheme, embodiment 7, entering and exiting different sides, entering and exiting concentrically, the center line of the valve body is inclined, and an anti-stacking component;

Figure 25 is the retractable type of this program, the schematic diagram of embodiment 8, the schematic diagram of entering and leaving the opposite side, and entering and exiting out of the same heart;

Fig. 26 is a schematic diagram of embodiment 9 of the retractable type of this program, a schematic diagram of entering and exiting the same side, and entering and exiting out of the same direction;

Figure 27 is the retractable type of this scheme, a schematic diagram of embodiment 10, one in and two out;

Fig. 28 is a schematic diagram of embodiment 11 of the retractable type of this scheme, one in and three out.

Figure 29 is a schematic diagram of embodiment 12 of the retractable type of this scheme, two in and one out.

Figure 30 is a schematic diagram of embodiment 13 of the retractable type of this scheme, three in and one out.

Figure 31 is a schematic diagram of embodiment 14 of the retractable type of this scheme, with two inputs and three outputs.

Figure 32 is a schematic diagram of embodiment 15 of the retractable type of this scheme, three in and two out.

Fig. 33 is the retraction type of this scheme, the schematic diagram of embodiment 16, one inlet and two outlets, anti-stacking structure.

Fig. 34 is a schematic diagram of embodiment 17 of the retractable type of the present scheme, one in and three out, anti-stacking structure.

Fig. 35 is a schematic diagram of embodiment 18 of the retracting type of this scheme, two in and one out, anti-stacking structure.

Fig. 36 is a schematic diagram of embodiment 19 of the retractable type of this scheme, three in and one out, anti-stacking structure.

Fig. 37 is a schematic diagram of embodiment 20 of the retractable type of this scheme, with two in and three out, anti-stacking structure.

Fig. 38 is a schematic diagram of embodiment 21 of the retracting type of this scheme, three in and two out, anti-stacking structure.

Fig. 39 is a schematic diagram of embodiment 22 of the retractable type of the present scheme, with three inlets and two outlets, and the anti-stacking structure contains the straight-bent extension pipe assembly of the outlet pipe.

Fig. 40 is a valve body assembly, the basic example A of combination.

Figure 41 is a schematic diagram of the support principle of the retractable expansion tube assembly of this scheme. In the figure, K-K' is the axis of the valve retractable expansion tube assembly; as shown in the figure, when the medium flows, the medium generates a flow direction pressure, and a force is applied For the retractable expansion tube assembly; the retractable expansion tube components are connected to each other on the same axis K-K', and the integrated retractable expansion tube assembly decomposes the medium pressure to the valve body assembly and forms a supporting force at the corresponding position , to support the expansion tube assembly to resist the pressure of the medium flow.

Figure 42 is a schematic diagram of the conduit being installed in the lower gland of the valve body.

Figure 43 is a schematic diagram of the conduit installed in the lower gland of the valve body, with a sensor assembly inside.

Figure 44. Schematic view of catheter with support ring.

In the picture:

10. Valve body assembly, including: 101. Valve body; 102. Upper flange of valve body; 103. Lower flange of valve body; 104. Upper gland of valve body; 105. Lower gland of valve body; 106. Medium inlet pipe Group, including: 106a, medium inlet pipe; 106b, medium inlet pipe; 106c, medium inlet pipe; 107, medium inlet pipe flange group, including: 107a, medium inlet pipe flange; 107b, medium inlet pipe flange; 108c , medium inlet pipe flange; 108, medium outlet pipe group, including: 108a, medium outlet pipe; 108b, medium outlet pipe; 108c, medium outlet pipe; 109, medium outlet flange group, including: 109a, medium outlet pipe Flange; 109b, medium outlet flange; 109c, medium outlet flange; 110, terminal spray pipe;

20. Retractable expansion tube assembly, including: 201. Expansion tube valve seat; 204. Metal clamp on pagoda joint; 205. Metal clamp under pagoda joint;

Retractable type: retractable upper pagoda joint 202b, retractable upper pagoda joint valve seat inner extension tube 202-1b, retractable lower pagoda joint 203b, retractable lower pagoda joint valve seat inner extension tube 203-1b, Retractable lower pagoda joint support rod 206b;

30. Open and close sensor components, including:

311. Open position sensor 1; 312 Close position sensor 1; 313 Air guide tube;

321, open position sensor 2; 322 close position sensor 2; 323 close position sensor 2 base; 324, close position sensor 2 base cover;

331. Catheter opening sensor 3; 332. Catheter closing sensor; 333. Induction ring;

308, valve plug;

40. Sealing assembly, including: 400. Sealing gasket of closing position sensor

401. Valve body sealing gasket set, including: 401a, valve body sealing gasket; 401b, valve body sealing gasket;

402, the upper pagoda joint gasket set, including: 402a, the upper pagoda joint gasket; 402b, the upper pagoda joint gasket;

403, the lower pagoda joint gasket set, including: 403a, the lower pagoda joint gasket; 403b, the lower pagoda joint gasket;

50. Connection components, including:

500, upper pagoda joint lock nut; 501, lower pagoda joint lock nut;

502. Valve body gland screw group;

503. Valve body gland nut set;

504. The base bolt group of the closing position sensor, including: 504a, the base bolt of the closing position sensor; 504b, the base bolt of the closing position sensor; 504c, the base bolt of the closing position sensor; 504d, the base bolt of the closing position sensor; Group bolt; 505a, medium outlet pipe extension pipe group bolt; 505b, medium outlet pipe extension pipe group bolt; 505c, medium outlet pipe extension pipe group bolt; 505d, medium outlet pipe extension pipe group bolt;

60. Protection components, including: 601, upper clamp protective sleeve; 602 lower clamp protective sleeve;

70. Catheter assembly, including: 701, catheter; 702, catheter support ring

80. Anti-stacking components, including: 801, funnel-shaped interface group; 801a funnel-shaped interface, 801b funnel-shaped interface; 802, anti-stacking conduit group: 802a anti-stacking conduit, 802b anti-stacking conduit; 803, conduit connector ; 803a conduit connector, 803b conduit connector

810. The straight extension pipe set of the medium outlet pipe includes: 811a, the straight extension pipe of the medium outlet pipe; 811b, the straight extension pipe of the medium outlet pipe with the anti-stacking component connection base

820, medium outlet pipe elbow extension pipe set includes: 821a, medium outlet pipe elbow extension pipe; 822b, medium outlet pipe elbow extension pipe with anti-stacking component connection base

1000. The first valve seat contact chamber,

2000, the second valve seat non-contact chamber,

3000. The third valve seat non-contact cavity.

Detailed ways

The technical solution of this solution will be further described in detail below in combination with specific implementation methods.

In all embodiments, the anti-stacking component includes: installed or not installed, two forms;

In all embodiments, the protection component includes: installed or not installed, two forms;

In all embodiments, the open position and close position sensor components include: installation or non-installation or optional parts, three forms;

3 kinds of open position and close position sensor components in different positions, all embodiments of this case can optionally install one of them, or optionally install two of them, or install all three, or none of them;

For all the valve components, the treatment methods for the internal parts in contact with the medium include:

The medium contact surface inside the valve is not treated;

Or make an attachment layer or coating on the medium contact surface inside the valve;

Or do anti-corrosion surface treatment on the medium contact surface inside the valve;

Referring to the figure of the embodiment, the valve accessory assembly appears in the installed state, and the actual state of the valve can choose to install the accessory assembly.

Among Fig. 1 to Fig. 41, it is basic case A (Fig. 40) or the further combination product of basic case A, including embodiment 1 to 22, and common characteristics are as follows:

When the spare parts of the same structure are marked in detail in the previous legend, the subsequent legends will mark similar spare parts with component codes instead of all or part of the spare parts in the specific spare part numbers, for example, use (60) component codes to directly mark the clamps Protective sleeve (601) or lower clamp protective sleeve (602);

As shown in Figures 1 to 44, the expansion tube sealing valve provided by this solution includes: a valve body assembly (10); a retractable expansion tube assembly (20); an open position and a closed position sensor assembly (30); a sealing Assembly (40); connection assembly (50); protection assembly (60); conduit assembly (70); anti-stocking assembly (80);

Wherein the valve body assembly (10); the retractable expansion tube assembly (20); the sealing assembly (40); the connection assembly (50); the conduit assembly (70);

Choose one of the fixed components of the retractable expansion tube assembly (20), the retractable lower pagoda joint support assembly or the conduit assembly (70), and the two do not appear at the same time;

The above components are combined together to form a basic valve, as shown in Figure 40; it is the basic example A;

Valve body assembly (10); retractable expansion tube assembly (20); conduit assembly (70) or retractable lower pagoda joint support assembly; a schematic diagram of the support after being combined together, as described in Figure 41, for resisting the flow direction of the medium force;

Basic example A, after optional installation, open position and close position sensor assembly (30), protection assembly (60), anti-stacking assembly (80), each embodiment 1 to 22 is formed;

Wherein the valve body (101) of the valve body assembly (10); the upper flange (102) of the valve body; the lower flange (103) of the valve body; the medium inlet pipe (106): the medium inlet pipe (106a), the medium inlet pipe ( 106b), medium inlet pipe (106c); medium inlet pipe flange (107): medium inlet pipe flange (107a), medium inlet pipe flange (107b), medium inlet pipe flange (108c); medium outlet pipe ( 108): medium outlet pipe (108a), medium outlet pipe (108b), medium outlet pipe (108c); medium outlet flange (109): medium outlet flange (109a), medium outlet flange (109b) 1. The medium outlet pipe flange (109c); the terminal spray pipe (110) is assembled by welding or integral casting.

The valve body assembly (10) connects the components of its various parts through the connection assembly (50); of the valve body assembly (10): the valve body upper gland (104); the valve body lower gland (105); through the connection assembly (50 ) is connected with other components; the valve body component (10) is connected with the retractable expansion tube component (20) through the connection component (50); the valve body component (10) is connected with the opening and closing position through the connection component (50) Position sensor assembly (30) is connected;

After the components of each part are connected, the seal is realized by the sealing component (40); the protection component (60) is elastically connected to the retractable expansion tube component (20); the base of the closing position sensor 2 (324) is welded on the valve body (101), Screw holes and card slots are reserved, and the closing position sensor assembly and the seal are connected by bolts or card slots. The opening or closing sensor (30) is installed on the retractable expansion tube assembly (20), and the opening or closing sensor (30) is installed on the valve body assembly (10); the conduit assembly (70) and the valve body assembly (10) is connected; the anti-stocking assembly (80) is connected with the valve body assembly (10).

The retractable retractable expansion tube assembly (20);

Retractable type: retractable upper pagoda joint (202b), with internal and external threads;

The connection between the retractable upper pagoda joint (202b) and the valve seat of the expansion pipe (201) is pagoda joint pattern, which adopts the pagoda pattern connected by standard air pipe or hose;

After the retractable upper pagoda joint (202b) is inserted into the expansion pipe valve seat (201), it is connected through the metal clamp (204) on the pagoda joint;

When the retractable upper pagoda joint (202b) is connected to the valve body assembly (10), the optional connection methods include: threaded connection and bolted connection;

The retractable upper pagoda joint (202b) is fixedly connected to the inner extension tube (202-1b) of the retractable upper pagoda joint valve seat. Optionally, the connection methods include: threaded connection or welded connection;

The inner extension pipe (202-1b) of the valve seat of the retractable upper pagoda joint has threads inside and outside;

The connection between the inner extension tube (202-1b) of the retractable upper pagoda joint valve seat and the expansion pipe valve seat (201) is pagoda joint pattern, which adopts the pagoda pattern connected by standard air pipe or hose;

When the inner extension pipe (202-1b) of the retractable upper pagoda joint valve seat is connected to the retractable upper pagoda joint (202b), it is optional to connect to the inner or outer side of the retractable upper pagoda joint (202b) and connect Methods include: threaded connection, welding connection;

The retractable lower pagoda joint (203b) has internal and external threads;

The connection between the retractable lower pagoda joint (203b) and the valve seat of the expansion pipe (201) is pagoda joint pattern, which adopts the pagoda pattern connected by standard air pipe or hose;

The retractable lower pagoda joint (203b) is internally processed with guide rails or guide grooves to guide the sliding of the retractable lower pagoda joint support rod (206b);

After the retractable lower pagoda joint (203b) is inserted into the valve seat (201) of the expansion pipe, it is connected through the lower metal clamp (205) of the pagoda joint;

The retractable lower pagoda joint (203b) is fixedly connected to the inner extension pipe (203-1b) of the valve seat of the retractable lower pagoda joint. Optionally, the connection methods include: threaded connection or welded connection;

When the retractable lower pagoda joint (203b) is connected with the support rod (206b) of the retractable lower pagoda joint, they are inserted into each other and slide smoothly to form a support for the valve seat (201) of the expansion pipe

The inner extension pipe (203-1b) of the valve seat of the retractable lower pagoda joint has threads inside and outside;

The connection between the inner extension tube (203-1b) of the retractable lower pagoda joint valve seat and the expansion pipe valve seat (201) is pagoda joint pattern, which adopts the pagoda pattern connected by standard air pipe or hose;

The inner extension pipe (203-1b) of the retractable lower pagoda joint valve seat is processed with guide rails or guide grooves inside to guide the sliding of the retractable lower pagoda joint support rod (206b);

When the inner extension pipe (203-1b) of the retractable lower pagoda joint valve seat is connected to the retractable lower pagoda joint (203b), it is optional to be connected to the inner or outer side of the lower pagoda joint (203a). The connection method includes: thread connection, welding connection;

The inner extension pipe (203-1b) of the valve seat of the retractable lower pagoda joint has a hollow structure inside. When it is hollow, the upper end is inside the expansion pipe valve seat (201), and the upper end is sealed or closed to ensure no leakage of liquid or air;

Optionally, when the retractable lower pagoda joint support rod assembly (206b) is connected to the outwardly extended lower pagoda joint (203a), they are inserted and fitted with each other to slide smoothly to form a support for the valve seat (201) of the expansion pipe;

Optionally, when the support rod assembly (206b) of the retractable lower pagoda joint is connected with the inner extension pipe (203-1b) of the valve seat of the retractable lower pagoda joint, they are inserted into each other and slide smoothly to form a pair of expansion pipe valve seats ( 201) support;

The inner extension pipe (202-1b) of the retractable upper pagoda joint valve seat and the inner extension pipe (203-1b) of the retractable lower pagoda joint valve seat are inserted into each other and slide smoothly to form a pair of expansion pipe valve seats (201) support;

The retractable expansion tube assembly (20) is inserted and fit between components, the total length of the moving components of the retractable expansion tube assembly (20) is variable, and the retractable expansion tube assembly (20) is not inflated or liquid, and the valve is in the When in the open position, the retractable expansion tube assembly (20) is not deformed, and its length is the minimum value; when the retractable expansion tube assembly (20) is inflated with air or liquid and the valve is closed, the retractable expansion tube assembly (20) is deformed When the length increases and reaches the set maximum value, the closing limit of the component (30) is triggered to stop air intake or liquid intake, the retractable expansion tube component (20) maintains its position under pressure, and the valve is closed. The length of the moving assembly of the type expansion tube assembly (20) reaches the maximum value;

The center point of the total length of the moving assembly of the retractable expansion tube assembly (20) changes with the length change caused by inflation or liquid expansion, and its position in the cavity of the valve body (101) also changes accordingly. The retractable expansion tube The central point of the moving component of the component (20) has a movement eccentricity during the opening and closing process of the valve.

The valve body assembly (10) has a cavity inside, and a retractable expansion tube assembly (20) is installed inside the cavity; the expansion tube valve seat (201) of the retractable expansion tube assembly (20), When the initial state is not inflated or filled with liquid, there is an annular cavity in the valve body cavity, and the medium circulates in the internal cavity;

Rely on the connection between the valve body assembly (10) and the retractable expansion drum assembly (20); rely on the internal retractable expansion tube assembly (20) to connect and insert other spare parts except the expansion tube valve seat (201) , support the valve seat (201) of the expansion pipe to ensure that it is not deformed when it is subjected to medium pressure.

In all embodiments, optionally, the anti-stockpiling component includes: installed or not installed, two forms;

In all embodiments, optionally, the protection component includes: installed or not installed, two forms;

In all embodiments, optionally, the open position and close position sensor components include: installation or non-installation or optional part of the components; three forms;

3 kinds of open and close sensor assemblies in different positions, all embodiments of this case can optionally install one of them, or optionally install two of them, or all three of them, or none of them.

For all the valve components, the treatment methods for the internal parts in contact with the medium include:

The medium contact surface inside the valve is not treated;

Or make an attachment layer or coating on the medium contact surface inside the valve;

Or do anti-corrosion surface treatment on the medium contact surface inside the valve.

In the following examples, the embodiment of the multi-tube form.

The multi-pipe form is an application example to realize the mixed transportation of multiple materials, or to integrate multiple input ports of the same medium into one pipeline.

For example, the output ends of multiple air compressors are connected to the main pipeline, or the process of adding various trace elements during feed transportation;

Or the design of the pipeline is one input and multiple outputs, one input device is used and the other is standby, there are check valves or stop valves at the front of the valves, and the output is multi-channel pipelines, which saves the problem of high demand for valves and large equipment investment caused by multiple pipelines .

In all the following embodiments, there is a sealing assembly (40) between the retractable expansion tube assembly (20) and the valve body assembly (10), and the retractable expansion tube assembly (20) and the sealing assembly (40) are in contact with The valve body assembly (10) is connected through the connection assembly (50), and the retractable expansion tube assembly (20)

The maximum outer diameter of the protection component (60) is smaller than the inner diameter of the valve; after disassembling the connection component (50), and the valve body upper gland and the valve body lower gland of the valve body assembly (10), the inner diameter can be replaced online. The retractable expansion tube assembly (20) or the protection assembly (60) or the sealing assembly (40).

For all the following embodiments, optionally, the clamp protective sleeve is installed or not installed;

When choosing to install, the upper metal clamp is equipped with an upper clamp protection sleeve, and the lower metal clamp is equipped with a lower clamp protection sleeve. The upper clamp protection sleeve is connected to the upper metal clamp through its own elasticity, and the lower clamp The protective sleeve is connected with the lower metal clamp through its own elasticity.

In all the following embodiments, the valve body assembly, the inlet pipe and the valve body are welded or integrally cast, the inlet pipe and the pipeline or equipment are connected through the inlet pipe flange, and the inlet pipe and the pipeline or equipment are connected by welding or threading; The pipe and the valve body are welded or integrally cast, the outlet pipe is connected to the pipeline or equipment through the outlet flange, and the outlet pipe is connected to the pipeline or equipment by welding or threading.

Indented embodiment:

Figures 1 to 18 are shown in Embodiment 1, including schematic diagrams, working principle diagrams, partial structural diagrams, connection schematic diagrams, and sensor position diagrams;

Fig. 6 to Fig. 15, Fig. 17 and Fig. 18 are some shapes and connection schematic diagrams of various forms of the retractable expansion tube assembly (20) of the retractable embodiment; Fig. 16 is a sensor (30) assembly through the retractable upper The schematic diagram that pagoda joint (202b) connects;

The valve body (101) has a cavity inside, and a retractable expansion tube assembly (20) is installed inside the cavity; the expansion tube valve seat (201) of the expansion tube assembly is not inflated or filled with liquid in the initial state When inflated, there is an annular cavity in the cavity of the valve body (101), and the medium circulates inside; the expansion tube valve seat (201) of the expansion tube assembly, after being inflated by an automatic power source or filled with liquid, the expansion tube valve seat (201) The outer wall is in close contact with the inner wall of the valve body (101) to form a first valve seat contact cavity (1000) to block the flow of medium, and at the same time there is a second valve seat non-contact on the upper side of the valve body (101) cavity Cavity (2000), there is a third valve seat non-contact cavity (3000) on the lower side of the valve body (101) cavity; after the automatic power source controls the deflation or liquid discharge, the expansion tube valve seat (201) itself Under the action of elastic force, it returns to the initial state and waits for the next working cycle; during each working cycle, the opening sensor (321) and closing position sensor (322) installed on the valve judge the valve retractable expansion tube assembly ( 20) Whether the expansion is completed, that is, the valve is closed or the contraction is completed, that is, the valve is opened, and a feedback signal for the opening or closing of the valve is sent; or the catheter opening sensor (331) or the catheter closing sensor (332) installed on the catheter assembly (70) , and the induction ring (333) on the retractable expansion tube assembly (20), judge whether the expansion of the valve retractable expansion tube assembly (20) is completed, that is, the valve is closed, or the contraction is completed, that is, the valve is opened, and the valve is opened or closed. Feedback signal; the feedback signal is sent to an external independent control system to control the valve.

In Embodiment 1, the connections and characteristics of various parts are as described above, and the retractable expansion tube valve seat assembly (20) effectively avoids the wrinkle problem when the valve seat is extended and deformed. At the same time, the anti-stacking component (80) realizes the suction of the accumulated material by the pipeline equipment, so as to realize the control of the accumulated material, so that the accumulated material in the valve body (101) does not exceed the capacity limit of the cavity, and the accumulation is too much, resulting in internal The retractable expansion tube assembly (20) is damaged;

As shown in Figure 19 embodiment 2, the multi-pipe spray structure, the connection mode of this embodiment is the same as that of embodiment 1, and it is characterized in that there are 12 terminal spray pipes (110), and the terminal spray pipes are generally used in the laminar flow cooling process of steel mills. Spray cooling, spray water to the steel plate conveying pipeline under the valve for cooling; in practical applications, the number of the spray pipes is N, and N is a natural number, that is, the actual number of the spray pipes can be greater than 12, or It can be less than 12, and the number of installations and the diameter of the spray pipe can be selected according to the actual medium flow demand; even more branch capillary spray pipes can be set on the spray pipe;

As shown in Embodiment 3 of Figure 20, the connection method of this embodiment is the same as that of Embodiment 1. The feature is that the inlet and outlet pipes are on different sides, and the position and height of the delivery pipeline can be changed. In addition, this embodiment describes the angular relationship of each position of the valve;

Including: there is an included angle α between the center line of the inlet pipe and the center line of the valve body, an included angle β between the center line of the outlet pipe and the center line of the valve body, an included angle γ between the center line of the valve seat of the expansion pipe and the center line of the medium of the inlet pipe, and an included angle γ between the center line of the expansion pipe and the center line of the valve body. There is an included angle δ between the centerline of the valve seat and the centerline of the medium exiting the pipe;

As shown in embodiment 4 of Fig. 21, the connection mode of this embodiment is the same as that of embodiment 1, and its characteristic is that its valve seat of the expansion pipe is eccentric to the centerline of the valve body in the valve body, and the inlet pipe and the outlet pipe are on the same side. This embodiment is mainly used in powder conveying, such as milk powder conveying; or long fiber medium conveying, such as pulp conveying; its advantage is that in the process of medium entering and discharging, it can avoid the medium from rotating along the expansion pipe, reducing clogging and abrasion.

As shown in Embodiment 5 of Figure 22, the connection method of this embodiment is the same as that of Embodiment 1. It is characterized in that the valve seat of the expansion pipe is eccentric to the center line of the valve body, the inlet pipe and the outlet pipe are on the same side, and an anti-stacking component is installed. (80). This embodiment is mainly used in powder conveying, such as milk powder conveying; or long fiber medium conveying, such as pulp conveying; its advantage is that in the process of medium entering and discharging, it can avoid the medium from rotating along the expansion pipe, reducing clogging and abrasion.

As shown in Embodiment 6 of Figure 23, the connection method of this embodiment is the same as that of Embodiment 1. The feature is that the center line of the retractable expansion tube assembly is not at right angles to the inlet and outlet pipes, and the inlet and outlet pipes are not concentric. This embodiment is mainly used In places where the direction of the pipeline is changed, the number of pipeline elbows can be reduced in practice. After the valve is installed, the pipeline bend angle can be reduced, and at the same time, the valve can be prevented from being damaged by the process, such as water hammer impact, eddy current wear, etc.

As shown in Embodiment 6 of Figure 24, the connection method of this embodiment is the same as that of Embodiment 1. The feature is that the center line of the retractable expansion tube assembly is not at right angles to the inlet and outlet pipes, the inlet and outlet pipes are concentric, and an anti-stacking component is installed. (80); this embodiment is mainly used in places where the direction of the pipeline is changed. In practice, the number of pipeline elbows can be reduced. After the valve is installed, the pipeline angle can be reduced, which is especially suitable for powder material transportation, and at the same time, the valve can be prevented from being damaged by the process. , such as water hammer impact, eddy current wear and other phenomena.

As shown in Embodiment 7 of Figure 25, the connection method of this embodiment is the same as that of Embodiment 1. The feature is that the center line of the retractable expansion tube assembly is at right angles to the inlet and outlet pipes, and the upper and lower sides of the inlet and outlet pipes are different, and the valve body cavity can be made It is longer and can be installed in a misplaced position to avoid obstructions in front of the pipeline. This embodiment is mainly used in places where the direction of the pipeline is changed. In practice, the number of pipeline elbows can be reduced. After the valve is installed, the pipeline bend angle can be reduced, especially It is suitable for powder conveying, and at the same time prevents the valve from being damaged by the process, such as water hammer impact, eddy current wear and other phenomena.

As shown in Embodiment 8 of Figure 26, the connection method of this embodiment is the same as that of Embodiment 1. The feature is that the center line of the retractable expansion tube assembly is at right angles to the inlet and outlet pipes, and the inlet and outlet pipes are on the same side, and the valve body cavity can be made It is longer, can connect the upper and lower parallel pipelines, and reduce the construction amount of pipeline elbow welding; this embodiment is mainly used in places where the direction of the pipeline is changed. Road bends, especially suitable for powder conveying, while avoiding process damage to the valve, such as water hammer impact, eddy current wear and other phenomena.

As shown in Embodiment 9 of Figure 27, the connection method of this embodiment is the same as that of Embodiment 1. The feature is that the center line of the retractable expansion tube assembly is at right angles to the inlet and outlet pipes, and the inlet and outlet pipes are on different sides, with one inlet and two outlets. The valve body cavity can be made longer, can connect upper and lower parallel pipelines, multiple outputs, and reduce the construction amount of pipeline elbow welding; this embodiment is mainly used in places where the direction of the pipeline is changed, and the pipeline elbow can be reduced in practice After installing the valve, the number of pipe bends can be reduced, especially for gas transmission.

As shown in Embodiment 10 of Figure 28, the connection method of this embodiment is the same as that of Embodiment 1. The feature is that the center line of the retractable expansion tube assembly is at right angles to the inlet and outlet pipes, and the inlet and outlet pipes are on the opposite side, with one inlet and three outlets. The valve body cavity can be made longer, can connect upper and lower parallel pipelines, multiple outputs, and reduce the construction amount of pipeline elbow welding; this embodiment is mainly used in places where the direction of the pipeline is changed, and the pipeline elbow can be reduced in practice After installing the valve, the number of pipe bends can be reduced, especially for gas transmission.

As shown in Embodiment 11 of Figure 29, the connection method of this embodiment is the same as that of Embodiment 1. The feature is that the center line of the retractable expansion tube assembly is at right angles to the inlet and outlet pipes, and the inlet and outlet pipes are on the opposite side, with two in and one out. The valve body cavity can be made longer, and multiple inputs can be connected and transformed into the same output, reducing the construction amount of pipeline elbow welding; this embodiment is mainly used in places where the direction of the pipeline is changed, and in practice, the number of pipeline elbows can be reduced. Quantity, after the valve is installed, the pipe bend angle is reduced, especially suitable for medium mixing and conveying, such as feed multi-input mixing.

As shown in Embodiment 12 of Figure 30, the connection method of this embodiment is the same as that of Embodiment 1. The feature is that the center line of the retractable expansion tube assembly is at right angles to the inlet and outlet pipes, and the inlet and outlet pipes are on different sides, with three inlets and one outlet. The valve body cavity can be made longer, and multiple inputs can be connected and transformed into the same output, reducing the construction amount of pipeline elbow welding; this embodiment is mainly used in places where the direction of the pipeline is changed, and in practice, the number of pipeline elbows can be reduced. Quantity, after the valve is installed, the pipe bend angle is reduced, especially suitable for medium mixing and conveying, such as feed multi-input mixing.

As shown in Embodiment 13 of Figure 31, the connection method of this embodiment is the same as that of Embodiment 1. The feature is that the center line of the retractable expansion tube assembly is at right angles to the inlet and outlet pipes, and the inlet and outlet pipes are on different sides, with two in and three out. The valve body cavity can be made longer, and can be connected to multiple inputs and converted into multiple outputs, reducing the construction amount of pipeline elbow welding; this embodiment is mainly used in places where the direction of the pipeline is changed, and in practice, pipeline elbows can be reduced After installing the valve, reduce the angle of the pipeline, especially if multiple input terminals of the same medium supply multiple tanks or pools with medium, or multiple output terminals output medium to multiple sites, which is to realize multi-channel supplementation of medium , The purpose of multi-channel shunting and branch delivery.

As shown in Embodiment 14 of Figure 32, the connection method of this embodiment is the same as that of Embodiment 1. The feature is that the center line of the retractable expansion tube assembly is at right angles to the inlet and outlet pipes, and the inlet and outlet pipes are on different sides, with three inlets and two outlets. The valve body cavity can be made longer, and can be connected to multiple inputs and converted into multiple outputs, reducing the construction amount of pipeline elbow welding; this embodiment is mainly used in places where the direction of the pipeline is changed, and in practice, pipeline elbows can be reduced After installing the valve, reduce the angle of the pipeline, especially if multiple input terminals of the same medium supply multiple tanks or pools with medium, or multiple output terminals output medium to multiple sites, which is to realize multi-channel supplementation of medium , The purpose of multi-channel shunting and branch delivery.

Figure 33 to Figure 38. Embodiments 15 to 21, compared with Embodiments 9 to 14, have the same structure respectively. In the case of having the characteristics of the above embodiments, an anti-stacking component (80) suitable for powder is added, mainly For powder conveying and other situations.

Fig. 39, embodiment 22, is on the basis of embodiment 21 of Fig. 38, the extension pipe assembly (810) and (820) of adding (80) assembly, realizes the switching connection of different flange standards, for example (810) carries out The outlets are American standard flanges or national standard flanges, or the pipe connection size is extended to make up for design deficiencies or replace old products with different standard valves.

For each embodiment of the above-mentioned retractable type, see the above-mentioned connection methods and characteristics of each part, which effectively avoids the wrinkle problem of the valve seat when the valve seat is extended and deformed through the retractable expansion tube valve seat assembly (20), and realizes the expansion of the expansion tube valve. The support of seat (201).

The embodiment of the above-mentioned retractable anti-stacking component (80) realizes the suction of the accumulated material by the pipeline equipment through the pressure fluctuation at the end of the conveying pipeline, so as to realize the anti-accumulation of the piled material, so that the valve body ( 101) The internal residual medium does not exceed the capacity limit of the cavity, so as to avoid excessive backlog, resulting in damage to the retractable expansion tube assembly (20);

All above-mentioned embodiments, the setting value of air-filling or liquid-filling, (reference value is sea level standard atmospheric pressure is 0, and actual pressure is about 1bar, according to each standard, here uniformly defined as standard atmospheric pressure is 0bar, namely actual pressure gauge reference The value is 0; the actual operating valve pressure refers to the actual gauge pressure, that is, gauge pressure 0bar = actual sea level pressure 1bar; the actual gauge pressure is 0.1Mpa, 0.1Mpa = 1bar, the pressure value is gauge pressure, and the actual reference sea level is 2bar ), according to the design and selection of the actual medium pressure, the opening and closing control of the valve is carried out. The set value is greater than the medium pressure to ensure that the expansion tube can expand to a sufficient size and close the medium channel; after the pressure is released, return to normal pressure, which is the standard of the reference value Atmospheric pressure is about 0.1Mpa, at this time rely on its own elastic reset, open the valve;

When inflated, the air pressure is between 0Mpa and 2.0Mpa; or other expressions, between 0bar and 20bar;

When filling liquid, because of the incompressibility of liquid, an external control device controls the entry and discharge of liquid. After cutting off, control its holding pressure, and the filling liquid holding pressure is set to less than 10Mpa or 100bar;

The above are some embodiments of this solution, but it should be pointed out that this solution is a separate valve, a part of the entire application system, and a participant in the system operation, not the whole system. This program is used independently or in conjunction with other equipment in the system, and is a means to finally realize the operation of the system. This program does not have all the functions of the system. At the same time, the realization of the function of this program also requires the cooperation of the system's own control system, power system, transmission system, protection system, etc., so the above-mentioned embodiments exist in the entire system, and are supported by itself or other system equipment to operate together. , and finally reach the product of the system design function. The description of its practical application scope of this scheme is not limited to the simple scope described in the examples.

It is obvious to those skilled in the art that this solution is not limited to the details of the above exemplary embodiments, and that this solution can be implemented in other specific forms without departing from the spirit or basic features of this solution. Therefore, no matter from that point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present solution is defined by the appended claims rather than the above description, so it is intended that the scope of the present invention will fall within the claims. All changes within the meaning and scope of the equivalent elements are included in this plan. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not every implementation mode only includes an independent technical solution. , the technical solutions of the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (4)

1. An eccentric expansion tube sealing valve comprising:

valve body assembly: the device comprises a valve body, a valve body upper flange, a valve body lower flange, a valve body upper gland, a valve body lower gland, a medium inlet pipe flange, a medium outlet pipe flange and a terminal spray pipe;

A telescoping expansion tube assembly comprising:

a motion assembly: the expansion pipe valve seat is internally contracted, the upper metal clamp of the pagoda joint and the lower metal clamp of the pagoda joint are connected, the upper pagoda joint is internally contracted, the upper pagoda joint valve seat is internally extended, the lower pagoda joint is internally contracted, and the lower pagoda joint valve seat is internally extended;

the fixing assembly is an inward-shrinking lower pagoda joint supporting assembly;

and (3) a sealing assembly: each position sealing gasket and each closing sensor sealing gasket are used for sealing the valve;

and (3) a connecting assembly: bolts and nuts at all positions are used for connecting all components of the valve;

a catheter assembly, comprising: a catheter, a catheter support ring;

the method is characterized in that:

the valve body of the valve body assembly is internally provided with a cavity, and the cavity is internally provided with an inward-shrinking expansion pipe assembly;

when the expansion pipe valve seat of the inward-contraction type expansion pipe assembly is not inflated or not inflated, an annular cavity is formed in the cavity of the valve body, and medium circulates in the cavity;

after an expansion pipe valve seat of the inward-shrinkage expansion pipe assembly is inflated or filled with liquid, the outer wall of the expansion pipe valve seat is tightly contacted with the inner wall of the valve body to form a first valve seat contact cavity for blocking medium circulation, a second valve seat non-contact cavity is formed at the upper side of the inner part of the valve body cavity, and a third valve seat non-contact cavity is formed at the lower side of the inner part of the valve body cavity;

The inner shrinkage type expansion pipe assembly moving assembly comprises:

the total length of the moving assembly of the telescopic expansion pipe assembly is changed in the dynamic process of opening-closing or closing-opening, the valve is minimum when fully opened, and the valve is maximum when fully closed;

in the dynamic process of opening-closing or closing-opening, the central point position of the moving assembly of the inward-shrinking expansion pipe assembly dynamically changes;

in the dynamic process of opening-closing or closing-opening the valve, the dynamic center point of the moving assembly of the inward-shrinking expansion pipe assembly has an eccentric distance relative to the center point of the original opening position or the original closing position of the moving assembly of the inward-shrinking expansion pipe assembly;

during the valve opening-closing or closing-opening process, the initial position of the center point of the moving assembly of the inner shrinkage type expansion pipe assembly has an eccentric distance relative to the final position.

2. An eccentric expansion tube sealing valve as in claim 1, further comprising:

the diameter of the inlet pipe is smaller than or equal to the diameter of the valve body, an included angle alpha is formed between the center line of the inlet pipe and the center line of the valve body, the included angle alpha is larger than 0 degree and smaller than 360 degrees, and is not equal to 180 degrees, the number of the inlet pipes is M, and M is a natural number larger than or equal to 1;

the diameter of the outlet pipe is smaller than or equal to the diameter of the valve body, an included angle beta is formed between the central line of the outlet pipe and the central line of the valve body, the included angle beta is larger than 0 degree and smaller than 360 degrees, and is not equal to 180 degrees, the number of the outlet pipes is N, and N is a natural number larger than or equal to 1;

The outer diameter of the expansion pipe valve seat is smaller than the inner diameter of the valve body,

an included angle gamma exists between the central line of the valve seat of the expansion pipe and the central line of the medium of the inlet pipe, and the included angle gamma is more than 0 degrees and less than 360 degrees and is not equal to 180 degrees;

an included angle delta exists between the central line of the valve seat of the expansion pipe and the central line of the medium of the pipe, and the included angle delta is larger than 0 degrees and smaller than 360 degrees and is not equal to 180 degrees.

3. An eccentric expansion tube sealing valve as in claim 1, wherein:

the treatment mode of the contact part between the inside of the valve body assembly and the medium comprises the following steps:

the medium contact surface inside the valve is not treated;

or an attachment layer is made on the medium contact surface inside the valve;

or the medium contact surface inside the valve is subjected to corrosion-proof surface treatment.

4. An eccentric expansion tube sealing valve as in claim 2, wherein:

the treatment mode of the contact part between the inside of the valve body assembly and the medium comprises the following steps:

the medium contact surface inside the valve is not treated;

or an attachment layer is made on the medium contact surface inside the valve;

or the medium contact surface inside the valve is subjected to corrosion-proof surface treatment.

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