CN219139898U

CN219139898U - Eccentric expansion pipe sealing valve

Info

Publication number: CN219139898U
Application number: CN202220163279.5U
Authority: CN
Inventors: 巴宇峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-01
Filing date: 2022-01-18
Publication date: 2023-06-06
Anticipated expiration: 2032-01-18
Also published as: CN219119853U

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

Eccentric expansion pipe sealing valve

Technical Field

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

Because of its structure, the following description will be given by the unified name "an internal-contraction type eccentric expansion pipe sealing valve".

The valve is characterized in that the outward extending expansion pipe component of the valve stretches and deforms when being inflated or liquid or discharged;

the center point of the motion assembly of the inward-shrinking expansion pipe assembly changes along with the dynamic process from opening to closing or from closing to opening of the valve;

the valve initial position is at the opening position, then the inward shrinkage type expansion pipe component is inflated or filled with liquid until the valve initial position is at the closing position, and the center point of the moving component of the inward shrinkage type expansion pipe component has a dynamic offset distance;

or the initial position of the valve is at the closing position, then the internal shrinkage type expansion pipe assembly is exhausted or filled with liquid until reaching the opening position, and the center point of the moving assembly of the internal shrinkage type expansion pipe assembly has a dynamic offset distance;

the valve seat of the inward-shrinking expansion pipe assembly is tightly contacted and sealed with the valve body after being inflated or expanded, so that the medium conveying section in the valve body is closed, and the valve is closed;

the valve seat of the inward-shrinking expansion pipe assembly exposes the inner space of the valve body when discharging air or liquid under the action of self elasticity to form a medium conveying channel in the valve body and open the valve;

Thereby realizing the cutting-off and the conduction of the medium and the opening or closing of the valve;

the valve is a sealing valve of the inner shrinkage type eccentric expansion pipe, wherein the moving component of the inner shrinkage type expansion pipe component moves eccentrically.

Background

The invention patent with application number 202010267761.9 discloses an expansion pipe sealing valve, which comprises a valve body assembly, an expansion pipe assembly, an opening and closing sensor assembly, a sealing assembly, a connecting assembly and a protection assembly.

The 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 pipe. The valve seat of the expansion pipe assembly is deformed under the action of pressure, the section of the valve seat is deformed under the pressure of inflow medium, the external shape is changed, for example, the shape of the outer circle of the cross section of the valve seat is concave, or the valve seat is changed into a flat ellipse, the medium flowing form in the cavity of the valve body is changed, and the larger pressure fluctuation is caused, so that the technological effect is influenced.

2. In the same state as the problem 1, when the valve is in the opening position, medium pressure in the pipeline acts on the expansion pipe valve seat, the expansion pipe valve seat is partially concavely deformed, and is inconsistent with the valve seat convex state during normal opening, so that the valve seat generates stress in different directions on the end part of the valve seat, namely the joint of the valve seat and the expansion pipe component pagoda, and the valve seat is partially cracked under the long-term action.

3. When the valve is closed, the valve seat of the expansion pipe is inflated and deformed, the diameter of the valve seat of the expansion pipe is increased, the axial total length of the valve seat of the expansion pipe is increased, the valve seat of the expansion pipe is deformed due to the increase, folds are formed at the contact position of the valve body, sometimes, the valve seat of the expansion pipe is not sealed, and even the valve seat of the expansion pipe is damaged too quickly.

4. When the valve inlet pipe and the valve outlet pipe are both positioned in the first valve seat contact cavity, the valve is powered by powder or fine particles, and when compressed gas is used for conveying, a second valve seat non-contact cavity at the upper side inside the valve body cavity and a third valve seat non-contact cavity at the lower side inside the valve body cavity can be provided with certain material accumulation, and when more materials are accumulated, the valve can be influenced to be opened and closed, so that the performance is influenced.

Disclosure of Invention

The technical scheme aims at the problems, overcomes at least one defect and provides the inward-shrinking type eccentric expansion pipe sealing valve.

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

The utility model provides a shrink-in type eccentric expansion pipe sealing valve which characterized in that includes the following subassembly:

a valve assembly, the assembly 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, wherein the valve body, the valve body upper flange, the valve body lower flange, the valve body upper gland, the valve body lower gland, the medium inlet pipe flange, the medium outlet pipe flange and the terminal spray pipe are used for being connected with equipment or pipelines or realizing a terminal spray function;

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;

the sealing device is used for sealing when the valve is opened and closed;

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;

catheter assembly: the catheter and the catheter support ring are used for supporting the inward shrinkage type expansion pipe assembly; and simultaneously, the catheter is optionally provided with an opening sensor assembly and a closing sensor assembly.

Wherein the catheter assembly: the guide pipe and the guide pipe supporting ring are used for supporting, and the supporting principle is the same as that of the telescopic lower pagoda joint supporting component;

the conduit component and the retracted lower pagoda joint support component are mutually replaced and do not appear at the same time;

selecting a telescopic lower pagoda joint support assembly, not installing a conduit assembly, wherein a valve body lower gland is not generally perforated, and the assembly is not generally provided with an opening and closing sensor assembly; in special cases, for example, the supporting rods of the assembly are in threaded connection with the holes of the gland below the valve body, one or more supporting rods are hollow, and the opening and closing sensor assemblies are arranged, so that the valve is generally applicable to valves with larger calibers and more than DN200, and the material cost is saved;

Selecting a conduit assembly, not installing a telescopic lower pagoda joint support assembly, opening a hole on a lower gland of a valve body, and optionally installing an opening and closing sensor assembly, or a valve plug, or a glass plug cover of an observation hole;

the valve component forms a basic valve structure to form a basic valve;

valve accessory component:

and (3) a protection component: upper clamp protection sleeve and lower clamp protection sleeve for metal clamp and pagoda joint on pagoda joint of inward-shrinking expansion pipe assembly

Protection of the lower metal clamp;

an on and off sensor assembly: the sensor assembly is arranged at different valve assembly positions and is used for detecting the working state of the valve;

prevent windrow subassembly includes: a funnel-shaped interface, an anti-stacking conduit, a conduit joint and a tube extension tube assembly;

the basic valve, optionally,

one or more or all of the above accessory components are installed;

or a part of the components to which one or more or all of the accessory components are mounted;

or a complete accessory assembly or assemblies are installed while a portion of the accessory assembly or assemblies are installed.

The valve accessory component is used for performing function improvement on the basic valve, realizing protection of the component, realizing control of equipment on the valve, realizing smooth operation of the valve, such as a stockpiling prevention component and a conduit component supporting piece, and realizing special process, such as protection operation of powder.

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 telescopic expansion pipe assembly is characterized in that a telescopic lower pagoda joint supporting assembly of a fixing assembly is inserted into an inner extension pipe of a telescopic lower pagoda joint valve seat of the moving assembly after the movable moving assembly is displaced, the moving assembly and the fixing assembly are mutually supported, and the total length of the moving assembly is variable;

when the valve is fully opened, the length of the valve is the minimum, when the valve for inflating or filling the valve for inflating the valve for filling the valve is closed, the valve seat of the internal shrinkage type expansion pipe is compressed and expanded, the diameter is enlarged, the length is increased, when the set maximum value of the input gas or liquid is reached, the valve seat is tightly attached to the valve body, the valve is closed, and the length of the valve for inflating the valve for filling the valve is the maximum value; the central point of the total length of the moving assembly of the inward-shrinking expansion pipe assembly changes along with the length change generated in the compression expansion process of the valve seat of the expansion pipe, and the position of the central point of the valve seat of the expansion pipe in the cavity of the valve body also changes;

Namely, the center point of the moving assembly of the inward-shrinking expansion pipe assembly has movement offset in the opening and closing process of the valve, and different eccentric distances exist between the center point of the moving assembly of the inward-shrinking expansion pipe assembly and the initial position in the opening and closing process of the valve;

the motion assembly of the retracted expansion pipe assembly is connected with the catheter assembly.

The catheter assembly is inserted into an extension tube in a valve seat of an inward-shrinking lower pagoda joint of the inward-shrinking expansion tube assembly moving assembly, the inward-shrinking expansion tube assembly moving assembly and the catheter assembly are mutually supported, and the total length of the inward-shrinking expansion tube assembly moving assembly is variable; when the valve is fully opened, the length of the valve is the minimum, when the valve for inflating or filling the valve for inflating the valve for filling the valve is closed, the valve seat of the internal shrinkage type expansion pipe is compressed and expanded, the diameter is enlarged, the length is increased, when the set maximum value of the input gas or liquid is reached, the valve seat is tightly attached to the valve body, the valve is closed, and the length of the valve for inflating the valve for filling the valve is the maximum value; the center point of the total length of the moving assembly of the inward-contraction type expansion pipe assembly changes along with the length change generated in the compression expansion process of the valve seat of the expansion pipe, and meanwhile, the position of the center point of the valve seat of the expansion pipe in a cavity of the valve body also changes along with the change, namely, the center point of the moving assembly of the inward-contraction type expansion pipe assembly moves and shifts in the opening and closing processes of the valve, and different eccentric distances exist between the center point of the moving assembly of the inward-contraction type expansion pipe assembly and the initial position of the valve in the opening and closing processes of the valve;

Namely, a motion assembly of the inner shrinkage type expansion pipe assembly:

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.

The valve body component comprises a valve body, a valve body upper flange, a valve body lower flange, a medium inlet pipe flange, a medium outlet pipe flange and a terminal spray pipe,

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

alternatively, the method adopts an integral casting molding,

optionally, each spare part is cast or machined and molded respectively and then welded together or connected together through bolts and threads;

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

the valve body assembly M is connected in the following manner;

optionally, integrally casting, forming and connecting, and mechanically processing part of the formed parts to enable the formed parts to meet the standard connection or installation requirements of the valve, such as American standard or national standard connection standard;

optionally, after casting or machining the spare parts respectively, the spare parts are welded together,

optionally, the two parts are connected together through a bolt connecting flange,

optionally, the two are combined together by threaded connection.

The inner shrinkage type expansion pipe component,

optionally, the inner extension tube of the inner shrinkage type upper pagoda joint and the valve seat of the inner shrinkage type upper pagoda joint is an independent component;

preferably, the inner extension tube of the inner shrinkage type upper pagoda joint and the valve seat of the inner shrinkage type upper pagoda joint are connected together and are integrally formed directly through machining or casting and other machining modes;

optionally, the inner extension tube of the inner shrinkage type lower pagoda joint and the valve seat of the inner shrinkage type lower pagoda joint is an independent component;

preferably, the inner telescopic lower pagoda joint and the inner extension tube of the valve seat of the inner telescopic lower pagoda joint are connected together and are integrally formed directly through machining, casting and other machining modes;

The telescoping expansion tube assembly comprises:

preferably, the inner shrinkage type upper pagoda joint is hollow, the inside and the outside are provided with threads or connecting screw holes, and the inner shrinkage type upper pagoda joint is used for connecting an inner extension tube of a valve seat of the upper pagoda joint and is used for air intake or liquid intake; can be used for connecting the valve seat of the expansion pipe; when the inner shrinking type upper pagoda joint is connected with the valve seat of the expansion pipe, the joint is pagoda joint lines, and the pagoda lines connected by a standard air pipe or a hose are adopted;

preferably, the inner extension tube of the valve seat of the inner-shrinkage type upper pagoda joint is hollow and internally and externally provided with threads; holes or grooves are processed for entering gas or liquid to directly enter the valve seat of the expansion pipe; the inner and outer threads are used for connecting the valve seat of the expansion pipe; when the extension tube in the inner shrinkage type upper pagoda joint valve seat is connected with the expansion tube valve seat, the joint is pagoda joint lines, and the pagoda lines connected by a standard air tube or a hose are adopted;

Preferably, the inner shrinkage type lower pagoda joint is hollow, the inside and the outside are provided with threads or connecting screw holes, and the inner shrinkage type lower pagoda joint is used for being connected with an extension tube in an upper pagoda joint valve seat and is used for being connected with an expansion tube valve seat; when the inner shrinking type lower pagoda joint is connected with the valve seat of the expansion pipe, the joint is pagoda joint lines, and the pagoda lines connected by a standard air pipe or a hose are adopted;

preferably, the inner extension tube of the valve seat of the inner shrinkage type lower pagoda joint is hollow, and threads are arranged inside and outside the extension tube and can be used for connecting the valve seat of the expansion tube; when the expansion pipe valve seat is connected with the valve seat, the inside of the valve seat comprises a part, and the inside of the valve seat is in the forms of sealing treatment, welding, machining blind holes, and the like, so that gas or liquid in the valve seat of the expansion pipe is isolated, and the effect of isolating media and power source compressed air or hydraulic oil and other liquid is achieved;

preferably, when the extension tube in the inner telescopic lower pagoda joint valve seat is connected with the expansion tube valve seat, the joint is pagoda joint lines, and the pagoda lines connected by a standard air tube or a hose are adopted;

preferably, the inner shrinkage type lower pagoda joint is internally provided with a hole, a guide rail or a guide groove is processed in the hole, and the inner shrinkage type lower pagoda joint support assembly is guided to slide; supporting the valve seat of the expansion pipe;

preferably, the inner shrinking type lower pagoda joint is internally provided with a hole, a guide rail or a guide groove is processed in the hole, and the guide pipe component slides; supporting the valve seat of the expansion pipe;

Preferably, a guide rail or a guide groove is processed in the extension tube in the valve seat of the inner-shrinkage type lower pagoda joint, and the guide rail or the guide groove guides the inner-shrinkage type lower pagoda joint support component to slide;

preferably, the inner extension tube of the valve seat of the inner shrinkage type lower pagoda joint is internally provided with a hole, a guide rail or a guide groove is processed in the hole, and the guide pipe component is guided to slide; supporting the valve seat of the expansion pipe;

preferably, when the inner extension tube of the valve seat of the inner-shrinkage type upper pagoda joint is connected with the inner-shrinkage type upper pagoda joint, the inner extension tube is connected with the inner side or the outer side of the upper pagoda joint;

preferably, when the inner extension tube of the valve seat of the inner-shrinkage type lower pagoda joint is connected with the inner-shrinkage type lower pagoda joint, the inner extension tube is connected with the inner side or the outer side of the lower pagoda joint;

preferably, the inner extension tube of the valve seat of the inner shrinkage type lower pagoda joint is of an inner hollow structure, the top end of the inner hollow structure is closed, and the inner hollow structure is isolated from an inflation cavity in the valve seat of the expansion tube; the hollow is used for being connected with the lower pagoda of shrink-in joint support subassembly or with the pipe subassembly is connected, and hollow part structure includes: not slotting or slotting guide slots;

preferably, an inner extension tube of a valve seat of the inner shrinkage type lower pagoda joint or the inner shrinkage type lower pagoda joint is provided with an induction ring close to the side of the lower end cover;

The inner shrinkage type expansion pipe assembly is characterized in that an upper tower joint at the air inlet end of the inner shrinkage type expansion pipe assembly is fixedly connected with the valve body assembly, an inner shrinkage type lower tower joint valve seat inner extension pipe and an inner shrinkage type lower tower joint at the other end of the inner shrinkage type lower tower joint are inserted into an inner shrinkage type lower tower joint supporting assembly, mutually support and are in sliding connection, and the inner shrinkage type lower tower joint supporting assembly is connected with a valve body lower gland of the valve body assembly; the components are mutually matched to form a supporting match of the inner shrinkage type expansion pipe component and the valve body component.

The lower pagoda of contract connects supporting component, include: the support rod, the collet and the support ring;

the inner shrinking type lower pagoda joint support assembly is connected with a valve body lower gland of the valve body assembly;

when the valve body lower gland is connected with the valve body lower gland, the connecting part is not opened, the connecting part is reserved at the connecting part of the valve body lower gland and the inner shrinkage type lower pagoda joint support component, for example, threads or screws are reserved, and the connecting part is not opened; the lower gland of the valve body is in a complete state, and no extra sealing is needed;

the inner shrinking type lower pagoda joint support component is connected with the valve body lower gland through a threaded connection or a screw rod, or is directly welded on the valve body lower gland;

the inner shrinking type lower pagoda joint support component comprises a support rod, wherein the inside of the support rod is solid or hollow and grooved, 1 or more support rods are provided, and the plurality of support rods are natural numbers which are more than or equal to 1;

When the valve body component is connected by the telescopic lower pagoda joint support component:

preferably, the inner extension tube of the valve seat of the inner lower pagoda joint is provided with a guide rail or a guide groove, and is connected with the inner lower pagoda joint support component in an insertion fit manner, so that the inner extension tube slides smoothly, and the valve seat of the expansion tube is supported and guided by being matched with the inner lower pagoda joint support component;

preferably, the conduit is hollow and is far away from the closed structure of the lower gland end of the valve body, and the conduit is externally threaded and is used for connecting the lower gland of the valve body;

preferably, the extension tube in the telescopic lower pagoda joint valve seat of the telescopic expansion tube assembly is connected with the telescopic lower pagoda joint supporting assembly, comprising: the number of the support rods is a natural number greater than or equal to 1, and the support rod bases are connected with the support rods in a threaded connection or welding mode; the support rod and the support rod base can also be integrally formed, cast or machined;

the support rods are arranged at positions when the number of the support rods is more than or equal to 1, the outer diameters of the support rods are tangential to the inner diameter of the extension tube in the valve seat of the inward-contraction type lower pagoda joint at the positions contacted with the inner wall of the extension tube in the valve seat of the inward-contraction type lower pagoda joint, and the center formed by the plurality of support rods is on the same axis with the center point of the inner diameter of the extension tube in the valve seat of the inward-contraction type lower pagoda joint;

Preferably, the inner shrinking type lower pagoda joint support component is directly connected with the lower gland of the valve body through threads or bolts or welding;

the inner shrinkage type lower pagoda joint support component is connected with the lower gland of the valve body, then the inner extension tube of the inner shrinkage type lower pagoda joint valve seat is inserted, the inner extension tube is mutually clearance after the inner shrinkage type lower pagoda joint valve seat is inserted, and the fit mode is clearance fit, so that the inner shrinkage type lower pagoda joint support component is not prevented from sliding in the inner extension tube of the inner shrinkage type lower pagoda joint valve seat;

the central axes of the components of the inward-shrinking expansion pipe component are coincident, and the components are slightly offset or inclined when impacted by the medium, but still are positioned on an approximately coincident axis, so that the components can overcome the force of the medium flowing direction and slide on the central axes.

The inner shrinkage type upper pagoda joint of the inner shrinkage type expansion pipe assembly is connected with the upper end cover of the valve body, meanwhile, the inner shrinkage type lower pagoda joint support assembly is connected with the lower valve body gland, and the inner extension pipe of the valve seat of the inner shrinkage type upper pagoda joint is inserted into the inner extension pipe of the valve seat of the inner shrinkage type lower pagoda joint;

the corresponding inner shrinkage expansion pipe components and the valve body components are integrated together, and the axes of the components are overlapped to form an axis.

The axis is a connecting line of the central points of the upper flange end cover and the lower flange end cover or the inner shrinkage type expansion pipe assembly, and when the inner shrinkage type expansion pipe assembly and the valve body assembly are eccentric, namely offset the central line of the valve body, the eccentric line is taken as the axis.

The inward shrinkage type expansion pipe component deforms when being opened and closed, and when each component moves axially, the axial line is always consistent without being influenced by the length change of the component;

when medium in the valve body circulates, the medium inflow pressure is applied to the inward shrinkage type expansion pipe assembly, the inward shrinkage type expansion pipe assembly distributes the force to the upper valve body gland and the lower valve body gland, and finally the medium inflow pressure is distributed to the valve body, so that the support of the inward shrinkage type expansion pipe assembly is realized;

each component of the inward-shrinking expansion pipe component is preferably of a cylindrical structure, the cylindrical surface is used for supporting inward recession of the valve seat under medium inflow pressure, and when the valve is opened, the medium inflow pressure is resisted, and the valve seat is supported;

when the valve body assembly is connected by the guide pipe:

the inward-shrinking expansion pipe component does not contain a fixing component; the fixing component, the retracted lower pagoda joint supporting component is replaced by the conduit component;

the telescoping expansion tube assembly comprises:

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

the inner telescopic expansion pipe assembly moving assembly is characterized in that an upper tower joint at the air inlet end of the inner telescopic expansion pipe assembly moving assembly is fixedly connected with the valve body assembly, an inner extension pipe of a valve seat of the inner telescopic lower tower joint at the other end of the inner telescopic lower tower joint and the inner telescopic lower tower joint are inserted into the guide pipe assembly, mutually support and are in sliding connection, and the guide pipe assembly is connected with a lower valve body gland of the valve body assembly; the components are matched with each other to form a supporting fit of the inner shrinkage expansion pipe component, the valve body component and the conduit component.

The inner extension tube of the valve seat of the inner shrinkage type lower pagoda joint is inserted into the catheter assembly and slides in;

a retracted expansion pipe component which is connected with the catheter component,

the conduit assembly is connected with a valve body lower gland, and the valve body lower gland is generally provided with an opening;

the conduit assembly is connected with the valve body lower gland through threads or bolts or is directly welded on the valve body lower gland;

the inside of the joint of the conduit assembly and the lower gland of the valve body is sealed by a valve plug or a visible glass observation hole element;

the inside of the conduit assembly is optionally provided with an opening and closing sensor assembly, and the induction ring is arranged on an extension tube in the valve seat of the telescopic lower pagoda joint;

preferably, the inner extension tube of the valve seat of the inner telescopic lower pagoda joint is provided with a guide rail or a guide groove, and is connected with the conduit assembly in an insertion fit manner, so that the inner extension tube slides smoothly, and the inner extension tube is matched with the conduit assembly to support and guide the inner telescopic expansion tube assembly;

Preferably, the conduit is hollow and is far away from the sealing structure of the lower gland end of the flange, and the conduit is externally provided with threads for connecting the lower gland of the flange;

preferably, an extension tube in a valve seat of the inner-shrinkage lower pagoda joint of the inner-shrinkage expansion tube assembly is connected with a conduit assembly, the conduit assembly is a conduit or a conduit supporting ring, and the conduit assembly is connected with a lower gland of the valve body;

the extension tube in the valve seat of the inner-shrinkage lower pagoda joint is directly inserted into the guide tube, or the guide tube provided with the supporting ring is inserted into the guide tube, and the insertion is mutually clearance fit, so that the extension tube in the valve seat of the inner-shrinkage lower pagoda joint is not prevented from sliding in the guide tube component;

the central axes of the inner shrinkage type expansion pipe component and the conduit component are coincident, and the inner shrinkage type expansion pipe component and the conduit component are slightly deviated or inclined when being impacted by the medium, but still are positioned on an approximately coincident axis, and can overcome the force of the medium flowing direction and slide on the central axis.

The inner shrinkage type upper pagoda joint of the inner shrinkage type expansion pipe assembly is connected with the upper gland of the valve body, the conduit assembly is simultaneously inserted into the inner extension pipe of the valve seat of the inner shrinkage type lower pagoda joint, and the inner extension pipe of the valve seat of the inner shrinkage type upper pagoda joint is inserted into the inner extension pipe of the valve seat of the inner shrinkage type lower pagoda joint, so that the conduit assembly and the inner extension pipe of the valve seat of the inner shrinkage type lower pagoda joint can be inserted into each other;

The corresponding valve body component, the inward shrinking expansion pipe component and the conduit component are connected together, and the axial central lines of the components are overlapped to form a central axis.

The axis is the connecting line of the upper valve body gland, the lower valve body gland, the inner shrinkage expansion pipe assembly and the central axis of the guide pipe;

when the central line of the inner shrinkage type expansion pipe component, the valve body component and the conduit component is eccentric, the eccentric line is taken as the axis.

when the medium in the valve body circulates, the medium inflow pressure is applied to the inward shrinkage type expansion pipe assembly, the inward shrinkage type expansion pipe assembly distributes the force to the upper valve body gland and the conduit assembly, the conduit assembly is conducted to the lower valve body gland, and finally the medium inflow pressure is distributed to the valve body, so that the support of the inward shrinkage type expansion pipe assembly is realized;

the inner shrinking type lower pagoda joint support component is connected with the lower gland of the valve body in a threaded connection, a bolt connection, a flange connection, a welding mode and the like;

When the inner shrinkage type lower pagoda joint support assembly is connected with the lower valve body gland:

the lower gland of the valve body is preferably not provided with a hole;

the valve body lower end cover needs a valve plug or a visual glass observation hole plug to block the opening, thereby avoiding pressure leakage, the opening is used for detection,

preferably, the lower pagoda joint support assembly of the shrink-in type includes: a support rod and a support rod base;

when the support rod is hollow, the top end is not closed, and the joint of the support rod and the lower gland of the valve body is closed;

preferably, the outer wall of the support rod is not grooved or perforated;

optionally, the outer wall of the support rod is grooved or perforated;

when the support rod is hollow, a clamping groove or a thread or a screw hole is formed in the support rod, the hollow inner part is used for connecting an open position sensor and a closed position sensor, and the support rod is closed through a valve plug or a plug when connected with the support rod base;

when the support rod is solid, the outer wall is provided with grooves or is not provided with grooves;

when the supporting rods are a plurality of independent rods, the supporting rods are selected to be in a hollow or solid form or a hollow and solid combined mode, wherein the number of the supporting rods is N, and the number of the supporting rods is a natural number larger than 1;

preferably, the end part of the supporting rod is provided with threads for connecting a lower gland of the valve body or a base of the supporting rod, and the supporting rod is used for supporting the inward-shrinking expansion pipe assembly;

When the inward shrinking type expansion pipe component is connected with the catheter component;

the catheter assembly comprises: a catheter, a catheter support ring;

the working principle is the same as that of the inward-shrinking lower pagoda joint supporting component, the supporting component is connected with the lower gland of the valve body, and at the moment, the lower gland of the valve body is perforated in a threaded connection, a bolt connection or a flange connection mode;

the guide pipe and the guide pipe supporting ring are used for supporting, and the inner shrinkage type lower pagoda joint supporting component;

preferably, the conduit is hollow and is far away from the end closure structure of the end cover, and the conduit is externally threaded and is used for connecting a lower gland of the valve body;

preferably, the inside of the conduit is provided with a clamping groove or a thread or a screw hole, the inside of the conduit is used for arranging and installing an open position sensor and a closed position sensor, and the bottom is provided with a valve plug or a visual glass observation element;

preferably, a clamping groove or a threaded hole or a reserved connection platform is processed outside the catheter and is used for connecting the catheter support ring;

preferably, the outside of the catheter is provided with a groove or a guide rail for sliding the expansion pipe assembly;

preferably, the conduit support ring is machined with grooves or guide rails for sliding of the inflation tube assembly;

the conduit supporting ring is arranged on the conduit or the extension tube in the valve seat of the telescopic lower pagoda joint and is used for supporting the extension tube assembly without obstructing the sliding of the assemblies;

The valve body component is fixedly connected with the inner shrinking type upper pagoda joint to form a support for the valve seat of the expansion pipe;

the inner extension tube of the valve seat of the inner-shrinkage upper pagoda joint and the inner extension tube of the valve seat of the inner-shrinkage lower pagoda joint are mutually inserted and matched and slide smoothly to form a support for the valve seat of the expansion pipe;

the inner extension tube of the valve seat of the inner shrinkage type lower pagoda joint is mutually inserted and matched with the supporting component of the inner shrinkage type lower pagoda joint, and the inner extension tube and the supporting component of the inner shrinkage type lower pagoda joint smoothly slide to form the support of the valve seat of the expansion tube;

the extension tube and the catheter component in the valve seat of the inner shrinkage type lower pagoda joint are mutually inserted and matched and slide smoothly to form a support for the valve seat of the expansion tube;

the inner shrinkage type lower pagoda joint supporting component is fixedly connected with the valve body component to form a support for the valve seat of the expansion pipe;

the supporting and guiding of the expansion pipe valve seat assembly are realized by the connection and the matching of the inward-shrinking expansion pipe assembly, the conduit assembly and the valve body assembly;

the maximum outer diameters of the connecting component and the protecting component of the expansion pipe component are smaller than the inner diameter of the valve body;

preferably, the inner extension tube of the valve seat of the inner shrinkage type lower pagoda joint is provided with a guide rail or a guide groove, and is connected with the guide pipe assembly in an insertion fit manner, so that the guide rail or the guide groove slides smoothly, and the support and the guide of the valve seat of the expansion tube are realized through the fit with the guide pipe assembly;

Preferably, the inner extension tube of the valve seat of the inner shrinkage lower pagoda joint of the inner shrinkage expansion tube assembly is connected with a part of the conduit assembly, and the conduit assembly is a conduit or a conduit supporting ring;

the inner extension tube of the valve seat of the inner lower pagoda joint is in inserted fit with the catheter or is in inserted fit with the catheter provided with the supporting ring, and the inserted extension tube is in clearance fit with the catheter after insertion, so that the sliding of the inner extension tube of the valve seat of the inner lower pagoda joint is not hindered;

however, the central axes of the inner shrinkage type expansion pipe component and the conduit component are coincident, and the inner shrinkage type expansion pipe component and the conduit component are slightly deviated or inclined when being impacted by the medium, but still are positioned on an approximately coincident axis, and can overcome the force of the medium flowing direction and slide on the central axis.

The inner shrinkage type expansion pipe assembly is connected with the gland on the valve body, and meanwhile, the guide pipe assembly is inserted into the corresponding valve body assembly, the inner shrinkage type expansion pipe assembly and the guide pipe assembly are connected together, and the central points of the assemblies are overlapped to form a central axis.

The axis is the connecting line of the valve upper gland, the valve lower gland and the central point of the conduit assembly and the inner shrinkage expansion pipe assembly;

when the inner shrinkage type expansion pipe component and the conduit component are eccentric with the central line of the valve body component, the eccentric line is taken as an axis.

when the medium in the valve body circulates, the medium inflow pressure is applied to the inward shrinkage type expansion pipe assembly, the inward shrinkage type expansion pipe assembly distributes the force to the upper valve body gland and the conduit assembly, the conduit assembly is conducted to the lower valve body gland, and finally the medium inflow pressure is distributed to the valve body to bear, so that the support of the inward shrinkage type expansion pipe assembly is realized;

preferably, the valve seat of the inner shrinkage type expansion pipe is cylindrical;

preferably, the inner telescopic upper pagoda joint valve seat inner extension tube, the inner telescopic lower pagoda joint and the inner telescopic lower pagoda joint valve seat inner extension tube are cylindrical;

the valve seat of the inward-shrinking expansion pipe is coated on the coating contact surface of the outer sides of the components such as the inward-shrinking upper pagoda joint, the inward-shrinking upper pagoda joint valve seat inner extension pipe, the inward-shrinking lower pagoda joint valve seat inner extension pipe and the like;

The inner diameter of the valve seat of the inward-shrinking expansion pipe is larger than the diameter of the coated surface of the components such as the inward-shrinking upper pagoda joint, the inward-shrinking lower pagoda joint, the valve seat, the inward-shrinking lower pagoda joint, and the like;

preferably, the conduit and the conduit support ring are used for supporting the extension tube in the valve seat of the telescopic lower pagoda joint;

preferably, the inside and the outside of the conduit are provided with clamping grooves or threads or screw holes for connecting an open position sensor and a closed position sensor, or a valve plug, or an isolation glass visual element with an observable medium with an isolation function;

preferably, a clamping groove or a threaded hole or a reserved connection platform is processed in the catheter and is used for connecting the catheter supporting ring;

preferably, a groove or a guide rail is formed in the catheter for sliding the inner shrinkage type expansion pipe assembly;

preferably, the catheter support ring is machined with grooves or guide rails for sliding of the telescoping inflation tube assembly;

preferably, the conduit is hollow, and when the conduit has a full diameter, the conduit is internally and externally threaded, and the end far away from the valve seat of the expansion pipe is used for being connected with a closing sensor or a valve plug or a visible glass observation element;

preferably, a groove or a threaded hole or a reserved connection platform is processed in the catheter, and the non-medium contact side is used for connecting the sensor;

the inner extension tube of the inner telescopic lower pagoda joint valve seat is mutually inserted and matched with the catheter component or the inner telescopic lower pagoda joint supporting component, and the inner extension tube and the catheter component are smoothly slid to form the support for the expansion tube valve seat;

supporting and guiding the expansion pipe valve seat assembly through the cooperation of the inner contraction type expansion pipe assembly, the conduit assembly and the valve body assembly;

the maximum outer diameter of each spare part of the inward-shrinking expansion pipe assembly is smaller than the inner diameter of the valve body;

the connecting component, the sealing component, the protecting component and the maximum outer diameter of the opening sensor component and the closing sensor component in the valve body component are smaller than the inner diameter of the valve body;

the on-position and off-position sensor assemblies,

optionally, the opening sensor 1, the closing sensor 1 and the air duct are arranged on the inward shrinkage type expansion pipe assembly, and the inside and outside of the reserved hole site are connected through an upper pagoda joint of the inward shrinkage type expansion pipe assembly, and the hole is threaded;

An open sensor 2 is arranged on the catheter assembly and is connected with the catheter, and optionally, the connection mode comprises: the bolt connection, the threaded connection and the reserved clamping groove are spliced;

the off-position sensor is connected with the upper cover of the off-position sensor, and optionally, the connection mode comprises: the bolt connection, the threaded connection and the reserved clamping groove are spliced;

the off-position sensor 2 is arranged on the valve body assembly, and the base is connected with the valve body, and optionally, the off-position sensor is fixedly connected through welding or reserved through casting;

the close position sensor upper cover is connected with the Guan Wei sensor base, and optionally, the connection mode includes: the bolt connection and the thread connection are carried out;

the catheter open position sensor 3 and the catheter close position sensor 3 are arranged on the catheter assembly and connected with the catheter, and optionally, the connection mode comprises: the bolt connection, the threaded connection and the reserved clamping groove are spliced.

The open and close sensor assemblies may or may not be optionally installed as accessory assemblies, either 1 or optionally 2 or all.

The induction ring is connected with the lower pagoda joint of the shrink-in expansion pipe assembly or the inner extension pipe of the lower pagoda joint, and the like, and optionally, the connection mode comprises: the device comprises a bolt connection, a threaded connection, a reserved clamping groove plug-in connection and an interference fit connection;

The valve plug is connected with the conduit, optionally through threaded connection or bolt connection;

the installation position of the sensor base is positioned on the outer wall of the valve body in the area of the first valve seat contact cavity, a sealing component is arranged when the valve body is opened and connected with the sensor base, the sealing component is not arranged when the valve body is not opened and connected with the sensor base, and the sensor base is welded and connected with the valve body or reserved by casting;

the sealing assembly comprises sealing gaskets or sealing strips, sealing rings and the like required by sealing of all parts, and realizes a sealing effect through crimping deformation.

The connecting component comprises connecting pieces such as bolts, nuts, screws and the like and is used for connecting the components at all positions.

The protection component comprises an upper clamp protection sleeve and a lower clamp protection sleeve, and is characterized in that the protection component is elastically tightened by self and sleeved on the upper metal clamp of the pagoda joint and the lower metal clamp of the pagoda joint, so that isolation between the clamp and a medium is realized, the clamp is protected, abrasion or corrosion speed of the clamp is reduced, the service life is prolonged, the protection component is elastically connected and is an optional component, and installation or non-installation can be selected according to actual conditions.

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

the conduit is connected with the lower gland of the valve body, and optionally, the connection mode comprises: threaded connection, bolt connection and welding connection;

When the catheter is connected to the on or off sensor assembly, it optionally includes: screw connection, reserved screw hole connection, flange connection, reserved clamping groove connection, interference fit connection and the like;

the guide tube is optional, the inside of the guide tube is hollow, the top end of the guide tube enters the inside of the valve body to be closed, a hole is reserved below the inside, and threads, screw holes or mounting grooves are optionally reserved in the hole; optionally, reserving threads, screw holes, flanges and the like for sealing the valve plug;

the outside processing of pipe has groove or screw hole or reserves connection platform, is connected with open position or close position sensor subassembly, and optionally, the connected mode includes: bolt connection, threaded connection, reserved clamping groove plugging, interference connection and the like;

the interior of the optional guide pipe is provided with a groove or a guide rail for connecting with the inner shrinkage type expansion pipe component;

the catheter support ring is optionally arranged at the outer side of the catheter, namely at the side contacted with the medium, according to the retraction type, and is used for supporting the expansion pipe assembly;

the protection component comprises: an upper clamp protective sleeve and a lower clamp protective sleeve;

the upper clamp protective sleeve of the protective assembly is elastically connected to the upper metal clamp of the pagoda joint through the upper clamp protective sleeve and the lower clamp protective sleeve is elastically connected to the lower metal clamp of the pagoda joint through the lower clamp protective sleeve;

The anti-stacking assembly includes: a funnel-shaped interface, an anti-stacking conduit, a conduit joint and a tube extension tube assembly;

the anti-stacking assembly is used for mounting all or part of the assemblies optionally;

when the anti-stacking component is connected with the valve body, optionally, the anti-stacking component comprises:

the anti-stacking component is directly welded with the valve body;

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

the connection method comprises the following steps:

the protruding platform of valve body is processing has internal and external screw thread when circular, through threaded connection funnel-shaped interface or processing screw hole on the platform, and the connected mode includes: threaded connection and bolt connection;

when the valve body platform is in other geometric shapes, the square is provided with a chamfer angle, an ellipse and a polygon; the reserved bolt hole sites are connected with the connecting funnel-shaped interfaces through bolts.

The medium exit tube straight extension tube group or the medium exit tube elbow extension tube group of the anti-stacking component, optionally, comprises:

when the medium outlet pipe straight extension pipe group or the medium outlet pipe elbow extension pipe group is connected with other components of the anti-stacking component, the components are directly welded and connected;

or the medium exit tube straight extension nest of tubes or medium exit tube elbow extension nest of tubes trompil, the hole is handled and is welded a outstanding platform, and the platform is geometry, includes: round, square with chamfer, oval, polygonal;

The connection method comprises the following steps: the medium outlet pipe straight extension pipe group or the medium outlet pipe elbow extension pipe group is provided with internal and external threads when the protruding platform is round, and is connected with a funnel assembly port through threads, or a threaded hole is processed on the platform; optionally, a bolted or threaded connection;

the reservation platform of the anti-stacking assembly comprises the following components in other geometric shapes: square, square belt chamfer, ellipse, polygon, through reserving the hole site of the bolt and connecting the funnel to adorn the interface, optionally, including the bolted connection or threaded connection;

optionally, the funnel-shaped interface is reserved with a thread or a threaded hole or a flange, a platform or a flange is arranged at the connection position of the funnel-shaped interface and the anti-stacking guide pipe group, and the thread or the threaded hole is processed, and optionally, the connection mode comprises: welded connection, threaded connection, bolted connection, flange connection.

Optionally, the funnel-shaped interface is reserved with a thread or a threaded hole or a flange, a platform or a flange is arranged at the connecting position of the funnel-shaped interface and the valve body component, and the thread or the threaded hole is processed, and optionally, the connecting mode comprises: welded connection, threaded connection, bolted connection, flange connection.

The anti-stacking conduit set is threaded or flanged and, when connected to the funnel mount interface, optionally includes: directly welding; the connecting part is provided with threads, and is connected through a pipe joint and the like in a threaded connection mode; or flanged connections.

When the anti-stacking conduit group is connected with the conduit joint, the method comprises the following steps: directly welding; the connecting part is provided with threads, and the threads are connected through a pipe joint in a connecting mode; or flanged connections.

Optionally, the conduit joint has a thread or a reserved screw hole or a flange, and when the conduit joint is connected with the anti-stacking conduit group, the connection mode comprises: welded connection, threaded connection, bolted connection, flange connection.

Optionally, a medium outlet pipe straight extension pipe group or a medium outlet pipe elbow extension pipe group is reserved with a connecting hole of a funnel-shaped interface, and can be directly connected with the funnel-shaped interface;

optionally, a medium outlet pipe straight extension pipe group or a medium outlet pipe elbow extension pipe group is reserved with a connecting hole of an anti-stacking conduit, and can be directly connected with the anti-stacking conduit;

optionally, the medium outlet pipe straight extension pipe group or the medium outlet pipe elbow extension pipe group is formed integrally by casting or by machining, and the reserved connecting hole is provided with a screw hole and a sealing ring groove;

the expansion pipe valve seat of the inward-shrinkage expansion pipe assembly is tightly contacted with the inner wall of the valve body to form a first valve seat contact cavity after being inflated or filled with liquid by an automatic power source to block medium circulation, a second valve seat non-contact cavity is formed at the upper side in the valve body cavity, and a third valve seat non-contact cavity is formed at the lower side in the valve body cavity;

The valve body is internally provided with a telescopic expansion pipe assembly, and the valve is opened and closed by the telescopic expansion pipe assembly; the total length of the moving assembly of the inward-shrinking expansion pipe assembly is variable, when the moving assembly of the inward-shrinking expansion pipe assembly is not opened by the inflation valve, the length of the moving assembly is the minimum, when the moving assembly of the inward-shrinking expansion pipe assembly is inflated or inflated, and the valve is closed, the deformation length of the moving assembly of the inward-shrinking expansion pipe assembly is increased, when the deformation length reaches the set maximum, the valve seat of the expansion pipe is tightly combined with the valve body, and the valve is closed, and at the moment, the length of the moving assembly of the inward-shrinking expansion pipe assembly reaches the design maximum; because an extension space exists in the axial direction of the expansion pipe valve seat, the expansion pipe valve seat cannot be extruded to form folds in the valve body;

the central point of the total length of the moving assembly of the inward-shrinking expansion pipe assembly changes along with the length change generated by the expansion of the valve seat of the expansion pipe, and meanwhile, the position of the central point in the cavity of the valve body also changes along with the length change, and the central point of the moving assembly of the expansion pipe assembly moves eccentrically in the opening and closing process of the valve.

When the valve is completely closed, because the anti-stacking component or the medium outlet pipe group at the non-contact cavity of the second valve seat and the non-contact cavity of the third valve seat are connected and connected with pipeline equipment, under the action of suction pressure at the outlet end at the outlet side, internal medium can be sucked out partially and reach internal balance, and when the valve is opened, the medium can flow to the outlet output position through the hole, and the process circulates along with the opening and closing process of the valve, a small amount of stacking exists, but after the continuous accumulation and stacking of medium materials are avoided, the displacement of the inward-shrinkage expansion pipe component is blocked, the tightness of the valve is not influenced, and the deformation failure of the valve seat of the expansion pipe due to the influence of the stacked materials is not caused. After the process, the valve is inflated, deflated or filled with liquid and discharged with liquid under the control of the automatic control system, and the valve seat of the expansion pipe is restored to the initial state under the action of self elasticity to wait for the next working cycle.

When the medium inlet pipe group and the medium outlet pipe group are connected on the valve body, the condition that the medium leakage cannot be sealed can be caused if the medium inlet pipe group and the medium outlet pipe group are simultaneously positioned on the outer side of the valve body of the second valve seat non-contact cavity or the third valve seat non-contact cavity is considered, and the valve comprises the following characteristics for avoiding the condition:

after any inlet pipe of the valve body assembly is intersected with all or part of the non-contact cavity of the second valve seat, the valve body area of the non-contact cavity of the second valve seat is not intersected with all or part of any outlet pipe;

after any inlet pipe of the valve body assembly is intersected with all or part of the non-contact cavity of the third valve seat, the valve body area of the non-contact cavity of the third valve seat is not intersected with all or part of any outlet pipe;

after any outlet pipe of the valve body assembly is intersected with all or part of the non-contact cavity of the second valve seat, the valve body area of the non-contact cavity of the second valve seat is not intersected with all or part of any inlet pipe;

after any outlet pipe of the valve body assembly is intersected with all or part of the non-contact cavity of the third valve seat, no any inlet pipe is intersected with all or part of the valve body area of the non-contact cavity of the third valve seat;

Considering different application environments of the valve, the inlet pipe center line, the outlet pipe center line and the valve body center line, the inlet pipe medium center line, the outlet pipe medium center line and the expansion pipe valve seat center line have the following spatial relationship:

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, the included angle alpha is not equal to 180 degrees, the number of the inlet pipes is M, and M is 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, the included angle beta is not equal to 180 degrees, the number of the outlet pipes is N, and N is 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.

When the valve of the invention moves away the powder medium,

the optional anti-windrow assembly connection setup location includes:

the second valve seat non-contact cavity and the third valve seat non-contact cavity are positioned;

Or the medium exit tube group position;

optionally, the valve body subassembly interface of preventing the partial subassembly interface or the connection of windrow subassembly, trompil, the overall dimension in hole and the appearance phase-match of funnel-shaped interface group, the connected mode includes:

directly welding and connecting;

or the valve body component is cast and connected with the outer frame, threaded holes or threads are processed on the frame, and the frame is connected with the anti-stacking component through bolts or threads;

the central line of the expansion pipe valve seat coincides with or is parallel to the central line of the valve body cavity, and the expansion pipe component is contained in the valve body cavity.

The connecting component is connected with other components through bolts, screws, nuts or threads machined by the spare parts of the connecting component.

The sealing assembly is elastically deformed under the action of the pressing force of the gasket, so that sealing is realized.

Optionally, the connection mode of the components at different positions of the valve body includes: the connecting components are in threaded connection, welded connection and reserved clamping groove connection

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

Optionally, the spare parts are in threaded connection, and when the threads need to be sealed, the taper pipe threads or the threads are sealed in a coated or wound thread form.

Optionally, the inner shrinkage type expansion pipe assembly is connected with other spare parts through a connecting assembly, and sealing is achieved through a sealing assembly.

Optionally, the medium inlet pipe group is connected with the valve body through welding or integral casting, and is connected with other equipment or pipelines through flanges or welding or threaded connection; the medium outlet pipe group is connected with the valve body through welding or integral casting, and is connected with other equipment or pipelines through flanges or welding or threaded connection; the parts are connected with other spare parts through the connecting assembly, and sealing is achieved through the sealing assembly.

Optionally, the medium contact part inside the valve body component is not treated or is coated or lined with glue or plastic according to different working conditions, and the coating comprises anticorrosive paint, epoxy resin coating, teflon, PTFE coating, nylon and ceramic coating, and the direct coating can meet the requirements of special media such as magnetic media, corrosive media, oily media and the like with special requirements; the valve body is characterized in that the medium contact surface is provided with an attachment coating, so that abrasion or corrosion is avoided; the medium contact surface can also be subjected to corrosion-resistant surface treatment such as bluing, blackening, phosphating, passivation treatment and the like;

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

the medium contact surface inside the valve is not treated;

or an attachment layer or a coating film is formed on the medium contact surface inside the valve;

or performing corrosion-resistant surface treatment on the medium contact surface inside the valve;

optionally, the opening or closing sensor component is provided with a thread or a clamping groove, and is connected with other components or spare parts through the thread or the clamping groove.

Optionally, the open position sensor or the close position sensor may be replaced by a valve plug, and the valve plug is provided with threads, screw holes or a clamping groove for reservation.

Optionally, the seat of the off-position sensor is welded on the valve body, and optionally, threads, screw holes or clamping grooves are reserved on the seat of the off-position sensor;

optionally, each component of the opening sensor component and the closing sensor component are connected through bolts or threads or clamping grooves, and are sealed through a sealing component.

The on and off sensor assembly includes:

open and close sensor 1: is arranged on the upper pagoda joint which is retracted, the position of the upper pagoda joint exposed out of the valve body is provided with an opening,

the hole is arranged at a position which does not affect the connection of the air source inlet pipe, the hole can be directly connected to the inside of the upper pagoda joint, and can also be connected to the position between the valve seat of the expansion pipe and other components of the expansion pipe; the expansion pipe can also extend into the inner extension pipe of the valve seat of the upper pagoda joint through the air duct, and the air duct is arranged at a position which does not influence the displacement generated when the inner shrinkage expansion pipe assembly ventilates and exhausts, for example, the central line position of the inner shrinkage expansion pipe assembly; optionally, the air duct enters the inner extension tube of the inner shrinkage type upper pagoda joint or the valve seat of the inner shrinkage type upper pagoda joint; the air duct is connected with an opening position sensor 1 and a closing position sensor, and the opening position and the closing position are fed back preferably by means of pressure change or displacement position inside the telescopic expansion pipe assembly; the above-mentioned open or close position sensor, optionally through the mechanical contact or touch triggering of induction, can also trigger the feedback through the known technical means, such as pressure, light sense, etc.;

The on and off sensor 2: the closing sensor 2, the base of the closing sensor 2 and the upper cover of the base of the closing sensor 2 are arranged on the valve body; the open sensor 2 is arranged on the catheter, the inside of the inner part is close to the valve seat component side of the expansion pipe, and the other side of the inner part is sealed by the valve plug; the above-mentioned open or close position sensor, optionally through the mechanical contact or touch triggering of induction, can also trigger the feedback through the known technical means, such as pressure, light sense, etc.;

an on-position and off-position sensor 3: the induction ring is arranged on the telescopic lower pagoda joint or the telescopic lower pagoda joint valve seat inner extension tube, the catheter opening sensor 3 and the catheter closing sensor 3, is suitable for a catheter mode, the opening and closing sensors are arranged on the inner side of the catheter, and the connection modes such as clamping grooves, threads or bolt connection and the like are reserved on the catheter, and the catheter can be triggered by mechanical contact or induction contact optionally, and can also trigger feedback by known technical modes such as pressure, light sensation and the like;

the opening sensor assembly and the closing sensor assembly are divided into 3 types, and 1 type of the opening sensor assembly and the closing sensor assembly can be optionally installed, 2 types of the opening sensor assembly and the closing sensor assembly can be optionally installed, or 3 types of the opening sensor assembly and the closing sensor assembly are installed, or none of the opening sensor assembly and the closing sensor assembly is installed;

an on and off sensor assembly for feeding back a signal of the valve;

Install on valve body subassembly and relate to position sensor 2 base, sensor base reserves screw and draw-in groove, closes position sensor 2 and seal assembly connected mode and includes: the device comprises a bolt connection, a clamping groove connection, a threaded connection and a flange connection; the installation position of the sensor base is positioned on the outer wall of the valve body in the area of the first valve seat contact cavity, a sealing component is arranged when the valve body is opened and connected with the sensor base, the sealing component is not arranged when the valve body is not opened and connected with the sensor base, and the sensor base is welded and connected with the valve body or reserved by casting;

optionally, the induction ring is arranged on the inner extension tube of the inner shrinkage type lower pagoda joint or the valve seat of the inner shrinkage type lower pagoda joint;

optionally, when the valve body welds and installs the sensor base of closing the position, according to the difference of sensor, include:

the valve body is provided with a hole, a sealing component is used for sealing when the valve body is provided with a hole, the valve body is connected with the hole through a connecting component,

or the valve body is not provided with a hole, and is connected through a connecting component through reserved threads or screw holes or clamping grooves.

Optionally, the metal clamp on the pagoda joint and the metal clamp under the pagoda joint are elastically connected and protected through the elastic protection component.

Optionally, the terminal spray pipe is welded on the valve body, the spray pipe is provided with holes, the medium flows out of the spray pipe, the terminal spray pipe is generally used for laminar cooling process of a steel mill or other spray water process, the medium is generally water, when the valve is closed, the water flow is closed, and when the valve is opened, the water flow is sprayed out along the small holes of the spray pipe, so that the design function is realized for spraying water on steel or other articles needing to be sprayed, the number of the spray pipes is N, and the number of the spray pipes 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, medium pressure in the pipeline acts on the expansion pipe valve seat, the expansion pipe valve seat can be subjected to pressure action, and the pressure action can be conducted to the inner shrinkage type expansion pipe assembly moving assembly: an inward shrinking type upper pagoda joint, an inward shrinking type upper pagoda joint valve seat inner extension tube, an inward shrinking type lower pagoda joint and an inward shrinking type lower pagoda joint valve seat inner extension tube of the inward shrinking type expansion tube assembly are connected into a whole; the moving component is connected with the fixed component and the telescopic lower pagoda joint supporting component, or the moving component is connected with the conduit component; simultaneously connecting the valve body component;

each component comprises: the motion assembly, the fixed assembly, the conduit assembly and the valve body assembly are connected to form a whole, and the expansion pipe valve seat is supported by the assemblies when being sunken inwards, so that the concave degree is reduced, the support is provided for the valve seat, and the serious deformation of the expansion pipe valve seat is avoided, so that the medium flow form change in the valve body cavity is reduced, the medium pressure fluctuation is relieved, and the medium pressure fluctuation is within the receiving range.

2. When the valve is at the opening position, medium pressure in the pipeline acts on the expansion pipe valve seat, the expansion pipe valve seat is subjected to pressure action, the pressure action can be conducted to the inner assembly of the inner shrinkage type expansion pipe assembly, the inner extension pipe of the inner shrinkage type upper pagoda joint valve seat, the inner extension pipe of the inner shrinkage type lower pagoda joint valve seat and the inner shrinkage type lower pagoda joint support assembly are integrated, the expansion pipe valve seat is supported by the assemblies when being inwards recessed, the inward recessing degree is reduced, the valve seat is supported, the inward recessing of the expansion pipe valve seat is avoided, the end part of the valve seat is avoided, namely the joint or the joint of the pagoda joint of the valve seat and the inner shrinkage type expansion pipe assembly, stress in different directions generated under the action of the medium pressure is avoided, the local cracking of the valve seat is further avoided, and the service life of the valve seat is prolonged.

3. When the valve is closed, the valve seat of the expansion pipe is inflated and deformed, the diameter of the valve seat of the expansion pipe is increased, the axial total length of the valve seat of the expansion pipe is increased, and the valve seat of the expansion pipe is deformed due to the increase, so that folds appear at the contact position of the valve body; through changing the design to the expansion pipe subassembly, adopt the expansion pipe subassembly of shrink-in, realized that the expansion pipe subassembly motion subassembly center of shrink-in can be shifted, its displacement process has realized sealed again having solved expansion pipe disk seat deformation fold problem.

4. When the valve medium inlet pipe group and the medium outlet pipe group are both positioned in the first valve seat contact cavity, the valve moves away powder or fine particles, and when compressed gas is used for conveying, a certain material accumulation exists in the second valve seat non-contact cavity at the upper side in the valve body cavity and the third valve seat non-contact cavity at the lower side in the valve body cavity, and after accumulation, the valve seat expansion of the expansion pipe is influenced, so that the valve performance is influenced; by additionally installing the anti-stacking component, the stacking can be continuously existed, but is sucked out under the action of system suction and conveying pressure, so that the stacking quantity can be reduced, and the stacking quantity is continuously output to a pipeline in the valve circulation opening and closing process, so that the stacking quantity is greatly reduced, and the influence of the stacking on the performance of the valve is avoided.

Drawings

FIG. 1 is a schematic illustration of the valve structure of the present embodiment;

fig. 2 is a schematic diagram of the structure of embodiment 1, a front view, and a retracted type of the present embodiment;

FIG. 3 is a schematic view of the embodiment 1 in a retracted form, and a left side view;

FIG. 4 is a schematic view showing the structure of embodiment 1 in the retracted mode, and a top view;

FIG. 5 is a comparison of the expanded and unexpanded state of the valve seat of the expanded tubular, along line E-E in the top view of FIG. 4, with variations in the expanded tubular assembly;

fig. 6 shows the valve in a retracted state when the valve is opened: the position schematic diagrams of the upper pagoda joint, the upper pagoda joint valve seat inner extension tube, the inner shrinkage type lower pagoda joint inner extension tube and the inner shrinkage type lower pagoda joint support rod are provided.

Fig. 7 shows the retraction of the valve when the valve is closed: the position schematic diagrams of the upper pagoda joint, the upper pagoda joint valve seat inner extension tube, the inner shrinkage type lower pagoda joint inner extension tube and the inner shrinkage type lower pagoda joint support rod are provided.

FIG. 8 and FIG. 9 are top plan views of different designs of the extension tube in the valve seat of the telescoping upper pagoda fitting;

FIG. 10 and FIG. 11 are top plan views of different designs of the extension tube of the telescopic lower pagoda connector;

FIG. 12, FIG. 13, FIG. 14 and FIG. 15 are top plan views of different designs of the lower tower joint support rod;

FIG. 16 is a schematic illustration of the connection of the sensor to the upper pagoda fitting;

FIG. 17 is a top plan view of the telescoping upper pagoda fitting;

FIG. 18 is a top plan view of the telescoping lower pagoda fitting;

FIG. 19 is a schematic diagram of a terminal multitube spray of example 2;

FIG. 20 is a schematic view illustrating the angle of the present embodiment; example 3 different sides of the inlet and outlet tube;

fig. 21 is a schematic illustration of the eccentric configuration of the telescoping expansion vessel assembly of example 4, on the same side of the inlet and outlet vessel.

FIG. 22 is a schematic illustration of the present embodiment with an anti-windrow assembly with an eccentric inner telescoping expansion tube assembly, example 5, two in and one out;

FIG. 23 is a schematic view of the present embodiment with the retracted, example 6, the inlet and outlet on the opposite side, the inlet and outlet on the different center, and the valve body center line inclined;

FIG. 24 is a schematic view of the telescoping version, example 7, with different sides in and out, concentric in and out, with the valve body center line tilted, with anti-windup assembly;

FIG. 25 is a schematic illustration of embodiment 8, with the different sides in and out, and the different centers in and out, with the present embodiment retracted;

FIG. 26 is a schematic illustration of embodiment 9, with the same side in and out and with different concentricity in and out;

FIG. 27 is a schematic view of embodiment 10, with two in and two out, illustrating the retracted mode of the present embodiment;

Fig. 28 is a schematic view of embodiment 11, one in and three out, in the retracted version of the present embodiment.

Fig. 29 is a schematic view of embodiment 12, two in and one out, in the retracted version of the present invention.

Fig. 30 is a schematic view of embodiment 13, three in and one out, in the retracted version.

Fig. 31 is a schematic diagram of the embodiment 14, two-in and three-out.

Fig. 32 is a schematic diagram of embodiment 15, three in and two out, in the retracted version of the present invention.

Fig. 33 is a schematic view of embodiment 16, i.e. a two-in and two-out, anti-stacking structure.

Fig. 34 is a schematic view of embodiment 17, one-in three-out, anti-stacking structure.

Fig. 35 is a schematic view of embodiment 18, two-in and one-out, anti-stacking structure.

Fig. 36 is a schematic view of embodiment 19, three in and one out, anti-windrow structure.

Fig. 37 is a schematic view of embodiment 20 showing the retraction-type structure of the present embodiment, two-in and three-out, and anti-stacking structure.

Fig. 38 is a schematic view of embodiment 21, three-in two-out, anti-stacking structure.

Fig. 39 is a schematic diagram of embodiment 22 with three in and two out, and the anti-stacking structure includes a straight-out tube extension tube assembly.

Fig. 40 shows a valve body assembly, which is combined to form a basic example a.

FIG. 41 is a schematic view of the supporting principle of the telescopic expansion pipe assembly according to the present embodiment, wherein K-K' is the axis of the valve telescopic expansion pipe assembly; as shown, when the medium flows, the medium generates flow direction pressure and applies a force to the inward shrinkage type expansion pipe assembly; the inner shrinkage type expansion pipe components are connected on the same axis K-K', the medium pressure is decomposed onto the valve body component by the inner shrinkage type expansion pipe components, supporting force is formed at the corresponding position, the expansion pipe components are supported, and the medium flow direction pressure is resisted.

FIG. 42 is a schematic view of the conduit mounted to the lower gland of the valve body.

FIG. 43 is a schematic view of the conduit mounted to the lower gland of the valve body with a sensor assembly disposed therein.

FIG. 44 is a schematic view of a catheter with a support ring.

In the figure:

10. a valve body assembly, comprising: 101. a valve body; 102. a flange on the valve body; 103. a valve body lower flange; 104. a gland is arranged on the valve body; 105. a valve body lower gland; 106. a media feed tube stack comprising: 106a, medium inlet pipe; 106b, medium inlet pipe; 106c, medium inlet pipe; 107. medium advances tub flange group, includes: 107a, a medium inlet pipe flange; 107b, a medium inlet pipe flange; 108c, a medium inlet pipe flange; 108. a media outlet tube set comprising: 108a, medium outlet pipe; 108b, medium outlet pipe; 108c, a medium outlet pipe; 109. a media exit tube flange set comprising: 109a, medium outlet pipe flange; 109b, medium outlet pipe flange; 109c, medium outlet pipe flange; 110. a terminal spray pipe;

20. A telescoping expansion tube assembly comprising: 201. an expansion tube valve seat; 204. a metal clamp is arranged on the pagoda joint; 205. lower metal clamp of the pagoda joint;

retracted type: an inward shrinking type upper pagoda joint 202b, an inward shrinking type upper pagoda joint valve seat inner extension tube 202-1b, an inward shrinking type lower pagoda joint 203b, an inward shrinking type lower pagoda joint valve seat inner extension tube 203-1b and an inward shrinking type lower pagoda joint support rod 206b;

30. an on and off sensor assembly comprising:

311. an open position sensor 1;312 off sensor 1;313 airway tube;

321. an open position sensor 2;322 off sensor 2;323 off-position sensor 2 base; 324. a base upper cover of the closing sensor 2;

331. a catheter opening sensor 3; 332. a catheter off-site sensor; 333. an induction ring;

308. a valve plug;

40. a seal assembly, comprising: 400. sealing gasket of off-position sensor

401. Valve body sealing gasket group includes: 401a, valve body sealing gaskets; 401b, valve body sealing gaskets;

402. go up pagoda joint gasket group includes: 402a, upper pagoda joint spacer; 402b, upper pagoda joint spacer;

403. lower pagoda connects gasket group includes: 403a, lower pagoda joint spacer; 403b, lower pagoda joint spacer;

50. A connection assembly, comprising:

500. the upper pagoda joint lock nut; 501. a lower pagoda joint lock nut;

502. a valve body gland screw group;

503. a valve body gland nut group;

504. close position sensor base bolt group includes: 504a, closing the sensor base bolt; 504b, closing the sensor base bolt; 504c, closing a sensor base bolt; 504d, closing a sensor base bolt; 505. a medium outlet pipe extension pipe group bolt; 505a, medium outlet pipe extension tube set bolts; 505b, medium outlet tube extension tube set bolts; 505c, medium outlet pipe extension tube set bolts; 505d, medium outlet pipe extension tube set bolts;

60. a protective assembly, comprising: 601. an upper clamp protective sleeve; 602 lower clamp protective sleeve;

70. a catheter assembly, comprising: 701. a conduit; 702. catheter support ring

80. Prevent windrow subassembly includes: 801. a funnel-shaped interface group; 801a funnel-shaped interface, 801b funnel-shaped interface; 802. anti-stacking guide tube group: 802a anti-windrow conduit, 802b anti-windrow conduit; 803. a conduit joint; 803a conduit fitting, 803b conduit fitting

810. The medium exit tube straight extension nest of tubes includes: 811a, a medium outlet tube straight extension tube; 811b and medium exit tube straight extension tube belt anti-stacking component connecting base

820. The medium exit tube elbow extension nest of tubes includes: 821a, medium outlet pipe elbow extension pipe; 822b, medium exit tube elbow extension tube belt anti-stacking component connection base

1000. The first valve seat contacts the cavity and,

2000. the second valve seat is not in contact with the cavity,

3000. the third valve seat is non-contact with the cavity.

Detailed Description

The technical scheme of the scheme is further described in detail below in combination with the specific embodiments.

In all embodiments, the anti-windrow assembly comprises: mounted or not mounted, two forms;

in all embodiments, the protection component comprises: mounted or not mounted, two forms;

in all embodiments, the on and off sensor assembly comprises: mounting or not mounting or selecting part of the components, and three forms;

all embodiments of the 3 different positions of the on-off sensor assembly can be optionally provided with 1 or 2 or 3 of the on-off sensor assemblies, or none of the on-off sensor assemblies;

the medium contact surface inside the valve is not treated;

or an attachment layer or a plating layer is formed on the medium contact surface inside the valve;

embodiments referring to the drawings, valve accessory assemblies are presented in a mounted state, and valve physical states may choose to mount the accessory assemblies.

In fig. 1 to 41, basic example a (fig. 40) or a further combination of basic examples a, including examples 1 to 22, share the following characteristics:

the spare parts with the same structure are marked in detail in the previous legend, similar spare parts are marked in the subsequent legends, all or part of spare parts in specific spare part numbers are replaced by component codes, for example, the upper clamp protective sleeve (601) or the lower clamp protective sleeve (602) are marked directly by (60) component codes;

as shown in fig. 1 to 44, the expansion pipe sealing valve provided in this embodiment includes: a valve body assembly (10); a telescoping expansion tube assembly (20); an on and off sensor assembly (30); a seal assembly (40); a connection assembly (50); a protection assembly (60); a catheter assembly (70); an anti-windrow assembly (80);

wherein the valve body assembly (10); a telescoping expansion tube assembly (20); a seal assembly (40); a connection assembly (50); a catheter assembly (70);

the fixed component of the inward shrinking expansion pipe component (20) is an inward shrinking lower pagoda joint supporting component or a conduit component (70), and the fixed component and the conduit component are not simultaneously present;

The above components are combined together to form a basic valve, as shown in fig. 40; as a basic example A;

a valve body assembly (10); a telescoping expansion tube assembly (20); a conduit assembly (70) or a telescoping lower pagoda joint support assembly; a schematic of the combined support, shown in fig. 41, for opposing the media flow direction force;

basic example a, after optional installation, on-off sensor assembly (30), protection assembly (60), anti-windrow assembly (80), forms each of examples 1 to 22;

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

The valve body assembly (10) is connected with the assemblies of all parts by the connecting assembly (50); valve body assembly (10): a gland (104) on the valve body; a valve body lower gland (105); is connected with other components through a connecting component (50); the valve body assembly (10) is connected with the inward-shrinking expansion pipe assembly (20) through the connecting assembly (50); the valve body assembly (10) is connected with the opening and closing sensor assembly (30) through the connecting assembly (50);

After the components at all parts are connected, sealing is realized through a sealing component (40); the protection component (60) is elastically connected to the inward shrinkage type expansion pipe component (20); the base (324) of the closing sensor 2 is welded on the valve body (101), a screw hole and a clamping groove are reserved, and the closing sensor component is connected with the sealing element through a bolt or the clamping groove. The open position or close position sensor (30) is arranged on the inner shrinkage type expansion pipe assembly (20), and the open position or close position sensor (30) is arranged on the valve body assembly (10); the conduit assembly (70) is connected with the valve body assembly (10); the anti-stacking component (80) is connected with the valve body component (10).

The telescoping-in telescoping-out expansion pipe assembly (20);

retracted type: an inner shrinking type upper pagoda joint (202 b) with threads inside and outside;

the joint of the inner shrinking type upper pagoda joint (202 b) and the valve seat (201) of the expansion pipe is pagoda joint lines, and the pagoda joint lines connected by a standard air pipe or a hose are adopted;

the inner shrinking type upper pagoda joint (202 b) is connected with the expansion pipe valve seat (201) through a metal clamp (204) on the pagoda joint after being inserted;

when the inner shrinking type upper pagoda joint (202 b) is connected with the valve body assembly (10), the optional connection modes comprise: threaded connection and bolt connection;

the inner shrinkage type upper pagoda joint (202 b) is fixedly connected with an inner extension tube (202-1 b) of a valve seat of the inner shrinkage type upper pagoda joint, and optionally, the connection mode comprises: threaded connection or welded connection;

The inner extension tube (202-1 b) of the valve seat of the inner shrinkage type upper pagoda joint is internally and externally provided with threads;

the joint of the extension tube (202-1 b) in the inner shrinking upper pagoda joint valve seat and the expansion tube valve seat (201) is pagoda joint lines, and the pagoda joint lines connected by a standard air tube or a hose are adopted;

when the inner extension tube (202-1 b) of the valve seat of the inner-shrinkage type upper pagoda joint is connected with the inner-shrinkage type upper pagoda joint (202 b), the inner side or the outer side of the inner-shrinkage type upper pagoda joint (202 b) can be optionally connected in a connecting mode comprising: threaded connection and welding connection;

the inner and outer sides of the inner-shrinkage lower pagoda joint (203 b) are provided with threads;

the joint of the inner shrinking lower pagoda joint (203 b) and the expansion pipe valve seat (201) is pagoda joint lines, and the pagoda joint lines connected by a standard air pipe or a hose are adopted;

a guide rail or a guide groove is processed in the inner part of the inner shrinkage type lower pagoda joint (203 b) to guide the inner shrinkage type lower pagoda joint support rod (206 b) to slide;

the inner shrinking type lower pagoda joint (203 b) is connected with the expansion pipe valve seat (201) through a lower metal clamp (205) of the pagoda joint after being inserted;

the inner shrinkage type lower pagoda joint (203 b) is fixedly connected with an inner extension tube (203-1 b) of a valve seat of the inner shrinkage type lower pagoda joint, and optionally, the connection mode comprises: threaded connection or welded connection;

when the inner shrinking type lower pagoda joint (203 b) is connected with the inner shrinking type lower pagoda joint supporting rod (206 b), the inner shrinking type lower pagoda joint is mutually inserted and matched with the inner shrinking type lower pagoda joint supporting rod to smoothly slide, and the support for the expansion pipe valve seat (201) is formed

The inner extension tube (203-1 b) of the inner shrinkage type lower pagoda joint valve seat is internally and externally provided with threads;

the joint of the extension tube (203-1 b) in the inner shrinkage lower pagoda joint valve seat and the expansion tube valve seat (201) is pagoda joint lines, and the pagoda joint lines connected by a standard air tube or a hose are adopted;

a guide rail or a guide groove is processed in the inner extension tube (203-1 b) of the valve seat of the inner telescopic lower pagoda joint, and the inner telescopic lower pagoda joint support rod (206 b) is guided to slide;

when the inner extension tube (203-1 b) of the valve seat of the inner-shrinkage lower pagoda joint is connected with the inner-shrinkage lower pagoda joint (203 b), the inner side or the outer side of the lower pagoda joint (203 a) can be optionally connected in a connecting mode comprising: threaded connection and welding connection;

an inner extension tube (203-1 b) of the valve seat of the inner shrinkage type lower pagoda joint is of an inner hollow structure, the upper end of the inner extension tube is positioned in the valve seat (201) of the expansion tube when hollow, and the upper end of the inner extension tube is sealed or closed, so that no leakage and gas leakage are ensured;

optionally, when the inner shrinking type lower pagoda joint support rod assembly (206 b) is connected with the outer stretching type lower pagoda joint (203 a), the inner shrinking type lower pagoda joint support rod assembly is mutually inserted and matched, and slides smoothly, so that the support for the expansion pipe valve seat (201) is formed;

optionally, when the supporting rod component (206 b) of the inner-shrinkage type lower pagoda joint is connected with the inner extension tube (203-1 b) of the valve seat of the inner-shrinkage type lower pagoda joint, the supporting rod component is mutually inserted and matched with the inner extension tube to smoothly slide, so that the valve seat (201) of the expansion tube is supported;

An inner extension tube (202-1 b) of the valve seat of the inner-shrinkage type upper pagoda joint and an inner extension tube (203-1 b) of the valve seat of the inner-shrinkage type lower pagoda joint are mutually inserted and matched, and smoothly slide to form a support for the valve seat (201) of the expansion tube;

the inner shrinkage type expansion pipe assembly (20) is matched through insertion among the assemblies, the total length of a moving assembly of the inner shrinkage type expansion pipe assembly (20) is variable, the inner shrinkage type expansion pipe assembly (20) is not inflated or filled with liquid, when the valve is in an open position, the inner shrinkage type expansion pipe assembly (20) is not deformed, and the length of the inner shrinkage type expansion pipe assembly is the minimum value; when the valve is closed, the deformation length of the inward shrinkage type expansion pipe assembly (20) is increased, when the deformation length reaches a set maximum value, the closing position limit of the assembly is triggered (30), the air inlet or liquid inlet is stopped, the inward shrinkage type expansion pipe assembly (20) is kept under pressure, the valve is closed, and the movement assembly length of the inward shrinkage type expansion pipe assembly (20) reaches the maximum value;

the center point of the total length of the moving assembly of the inward-shrinking expansion pipe assembly (20) changes along with the length change generated by inflation or liquid expansion, and meanwhile, the position of the center point in the cavity of the valve body (101) also changes along with the length change, and the center point of the moving assembly of the inward-shrinking expansion pipe assembly (20) moves eccentrically in the opening and closing process of the valve.

The valve body assembly (10) is internally provided with a cavity, and the inside of the cavity is provided with a retracted expansion pipe assembly (20); an expansion pipe valve seat (201) of the inward-contraction expansion pipe assembly (20) is provided with an annular cavity in a valve body cavity when the initial state is not inflated or liquid-filled for expansion, and medium flows in the internal cavity;

by means of the connection of the valve body assembly (10) and the inner shrinkage type expansion drum assembly (20); the expansion pipe valve seat (201) is supported by means of mutual connection and insertion of other spare parts except for the expansion pipe valve seat (201) of the inward-shrinking expansion pipe assembly (20), so that the expansion pipe valve seat (201) is guaranteed not to deform when being subjected to medium pressure.

In all embodiments, the optional anti-windrow assembly comprises: mounted or not mounted, two forms;

in all embodiments, the optional, protective component comprises: mounted or not mounted, two forms;

in all embodiments, the optional on and off sensor assembly comprises: mounting or not mounting or optionally mounting a partial assembly; three forms;

all embodiments of the present case may optionally be provided with 1 of the 3 different positions of the on and off sensor assemblies, or optionally be provided with 2 of the 3, or none of the 3.

the medium contact surface inside the valve is not treated;

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

Among the following examples, the multitube type was used.

The multitube form is an application embodiment for realizing the mixed conveying of multiple materials or integrating multiple input ends with the same medium into one pipeline.

For example, the output ends of the air compressors are connected with a main pipeline, or a process for adding various microelements during feed conveying;

or the pipeline is designed as one input and one output, the input equipment is one and one standby, the front end of the valve is respectively provided with a check valve or a stop valve, the output is a multi-way pipeline, and the problems of high valve requirements and high equipment investment caused by the multi-way pipeline are solved.

In all the following embodiments, a sealing assembly (40) is arranged between the inner shrinkage type expansion pipe assembly (20) and the valve body assembly (10), the inner shrinkage type expansion pipe assembly (20) and the sealing assembly (40) are connected with the valve body assembly (10) through a connecting assembly (50), and the inner shrinkage type expansion pipe assembly (20)

And the maximum outer diameter of the protection component (60) is smaller than the inner diameter of the valve body; after the connecting component (50) and the upper valve body gland and the lower valve body gland of the valve body component (10) are disassembled, the on-line replacement of the inner shrinkage expansion pipe component (20) or the protection component (60) or the sealing component (40) can be realized.

All of the following embodiments, optionally with or without a clamp sleeve;

during the selective installation, go up metal clamp externally mounted and go up clamp protective sheath, lower metal clamp externally mounted and have down the clamp protective sheath, go up the clamp protective sheath and be connected with last metal clamp through self elasticity, lower clamp protective sheath is connected with lower metal clamp through self elasticity.

In all the following embodiments, the valve body assembly is formed by welding or integrally casting a pipe and a valve body, wherein the pipe and a pipeline or equipment are connected through a pipe inlet flange, and the pipe and the pipeline or equipment are connected through welding or threads; the outlet pipe is welded or cast integrally with the valve body, the outlet pipe is connected with the pipeline or the equipment through an outlet pipe flange, and the outlet pipe is connected with the pipeline or the equipment through welding or threads.

Telescoping embodiment:

embodiment 1 of fig. 1 to 18 includes a schematic diagram, a working principle diagram, a partial structure diagram, a connection schematic diagram, and a sensor position schematic diagram;

FIGS. 6-15, 17, 18 are schematic illustrations of some of the shapes and connections of various forms of the telescoping embodiment telescoping expansion tube assembly (20); FIG. 16 is a schematic illustration of the connection of the sensor (30) assembly through the telescoping upper pagoda fitting (202 b);

The valve body (101) is internally provided with a cavity, and the inside of the cavity is provided with a retracted expansion pipe assembly (20); an expansion pipe valve seat (201) of the expansion pipe assembly is provided with an annular cavity in a cavity of the valve body (101) when the expansion pipe valve seat is not inflated or filled with liquid for expansion in an initial state, and medium circulates in the cavity; the expansion pipe valve seat (201) of the expansion pipe assembly is tightly contacted with the inner wall of the valve body (101) to form a first valve seat contact cavity (1000) after being inflated or inflated by an automatic power source, so as to block medium circulation, a second valve seat non-contact cavity (2000) is formed at the upper side of the inner part of the cavity of the valve body (101), and a third valve seat non-contact cavity (3000) is formed at the lower side of the inner part of the cavity of the valve body (101); after the automatic power source controls deflation or liquid discharge, the valve seat (201) of the expansion pipe is restored to an initial state under the self elastic force action of the valve seat, and the next working cycle is waited; in each working cycle process, an opening sensor (321) and a closing sensor (322) which are arranged on the valve are used for judging whether the valve inner contraction type expansion pipe assembly (20) is expanded or not, namely, the valve is closed or contracted, namely, the valve is opened, and sending a feedback signal for opening or closing the valve; or a conduit open sensor (331) or a conduit close sensor (332) which are arranged on the conduit assembly (70) and an induction ring (333) on the inward shrinkage type expansion pipe assembly (20) are used for judging whether the inward shrinkage type expansion pipe assembly (20) of the valve is completely expanded or not, namely, the valve is completely closed or shrunk, namely, the valve is completely opened, and sending a feedback signal for opening or closing the valve; the feedback signal is transmitted to an external independent control system to control the valve.

In embodiment 1, the connection and characteristics of all parts are as described above, and the problem of wrinkling when the valve seat extends and deforms is effectively avoided by the inner shrinkage type expansion pipe valve seat assembly (20). Meanwhile, the pipe equipment is prevented from sucking accumulated materials through the accumulation prevention assembly (80), so that the control of the accumulated materials is realized, the accumulated materials in the valve body (101) do not exceed the accommodating limit of the cavity, and the accumulated pressure is excessive, so that the inner shrinkage type expansion pipe assembly (20) is damaged;

as shown in the embodiment 2 of FIG. 19, the embodiment is the same as the embodiment 1 in connection mode, and is characterized by 12 terminal spray pipes (110), wherein the terminal spray pipes are generally used for laminar cooling process of steelworks, spray cooling, and spray water is used for cooling steel plate conveying pipelines below valves; in practical application, the number of the spray pipes is N, and N is a natural number, namely, the number of the spray pipes can be more than 12 or less than 12 in practice, and the installation number and the diameter of the spray pipes are selected according to the requirement of the actual medium flow; even more branched capillary spray pipes can be arranged on the spray pipeline;

as in embodiment 3 of fig. 20, the connection mode of this embodiment is the same as that of embodiment 1, and is characterized in that the position and height of the conveying pipeline can be changed on the opposite side of the inlet pipe and the outlet pipe; in addition, in the embodiment, the angular relationship of each position of the valve is described;

Comprising the following steps: an included angle alpha is formed between the center line of the inlet pipe and the center line of the valve body, an included angle beta is formed between the center line of the outlet pipe and the center line of the valve body, an included angle gamma is formed 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 delta is formed between the center line of the valve seat of the expansion pipe and the center line of the medium of the outlet pipe;

as shown in embodiment 4 of FIG. 21, the connection mode of this embodiment is the same as that of embodiment 1, and is characterized in that its expansion pipe valve seat is eccentric with the central line 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 applied to powder delivery, such as milk powder delivery; or long fiber media transport, such as pulp transport; its advantages are no rotation of medium along expansion tube, and less blocking and abrasion.

As shown in embodiment 5 of FIG. 22, the connection mode of the embodiment is the same as that of embodiment 1, and is characterized in that the valve seat of the expansion pipe is eccentric with the central line of the valve body in the valve body, the inlet pipe and the outlet pipe are arranged on the same side, and an anti-stacking assembly (80) is arranged. This embodiment is mainly applied to powder delivery, such as milk powder delivery; or long fiber media transport, such as pulp transport; its advantages are no rotation of medium along expansion tube, and less blocking and abrasion.

As shown in embodiment 6 of FIG. 23, the connection mode of the embodiment is the same as that of embodiment 1, and is characterized in that the center line of the telescopic expansion pipe assembly is not right angle with the inlet pipe and the outlet pipe, and the inlet pipe and the outlet pipe are not concentric.

As shown in fig. 24, embodiment 6, the connection mode of the embodiment is the same as that of embodiment 1, and is characterized in that the central line of the inward shrinking expansion pipe assembly is not right angle with the inlet pipe and the outlet pipe, the inlet pipe and the outlet pipe are concentric, and an anti-stacking assembly (80) is arranged; the embodiment is mainly applied to places for changing the direction of the conveying pipeline, can actually reduce the number of pipeline elbows, reduces the pipeline bent angle after installing the valve, is particularly suitable for powder conveying, and simultaneously avoids the valve from being damaged by the process, such as water hammer impact, vortex abrasion and the like.

As shown in embodiment 7 of FIG. 25, the connection mode of the embodiment is the same as that of embodiment 1, and is characterized in that the central line of the inward-shrinking expansion pipe assembly, the inlet pipe and the outlet pipe are at right angles, the upper side and the lower side of the inlet pipe and the outlet pipe are respectively provided with a longer valve cavity, the valve cavity can be installed in a staggered manner, and the shielding in front of the pipeline is avoided.

As shown in fig. 26, embodiment 8, the connection mode of the embodiment is the same as that of embodiment 1, and is characterized in that the central line of the inward shrinking expansion pipe assembly is right angle with the inlet pipe and the outlet pipe, the inlet pipe and the outlet pipe are on the same side, the valve cavity can be made longer, and the valve cavity can be connected with a pipeline which is parallel up and down, so that the construction amount of pipeline elbow welding is reduced; the embodiment is mainly applied to places for changing the direction of the conveying pipeline, can actually reduce the number of pipeline elbows, reduces the pipeline bent angle after installing the valve, is particularly suitable for powder conveying, and simultaneously avoids the valve from being damaged by the process, such as water hammer impact, vortex abrasion and the like.

As shown in fig. 27, embodiment 9, the connection mode of the embodiment is the same as that of embodiment 1, and is characterized in that the central line of the inward-shrinking expansion pipe assembly is right angle with the inlet pipe and the outlet pipe, the opposite sides of the inlet pipe and the outlet pipe, the inlet pipe and the outlet pipe are respectively provided with a valve cavity, the valve cavity can be made longer, the upper and lower parallel pipelines can be connected, a plurality of outputs are provided, and the construction amount of pipeline elbow welding is reduced; the embodiment is mainly applied to places for changing the direction of the conveying pipeline, can actually reduce the number of pipeline elbows, reduces the pipeline bending angle after installing the valve, and is particularly suitable for gas conveying.

As shown in fig. 28, embodiment 10, the connection mode of this embodiment is the same as that of embodiment 1, and is characterized in that the central line of the internal shrinkage expansion pipe assembly is right angle with the inlet pipe and the outlet pipe, the opposite sides of the inlet pipe and the outlet pipe, one inlet pipe and one outlet pipe, the valve cavity can be made longer, and can be connected with the pipelines parallel up and down, a plurality of outputs can be realized, so that the construction amount of pipeline elbow welding can be reduced; the embodiment is mainly applied to places for changing the direction of the conveying pipeline, can actually reduce the number of pipeline elbows, reduces the pipeline bending angle after installing the valve, and is particularly suitable for gas conveying.

As shown in fig. 29, embodiment 11, the connection mode of this embodiment is the same as that of embodiment 1, and is characterized in that the central line of the internal shrinkage expansion pipe assembly is right angle with the inlet pipe and the outlet pipe, the opposite sides of the inlet pipe and the outlet pipe, the two inlet pipe and the one outlet pipe, the valve cavity can be made longer, multiple inputs can be connected and converted into the same output, and the construction amount of welding the pipe elbow is reduced; the embodiment is mainly applied to places for changing the direction of the conveying pipeline, can actually reduce the number of pipeline elbows, reduces the pipeline bending angle after installing the valve, and is particularly suitable for medium mixed conveying, such as feed multi-input mixing.

As shown in fig. 30, embodiment 12, the connection mode of the embodiment is the same as that of embodiment 1, and is characterized in that the central line of the inward shrinking expansion pipe assembly is right angle with the inlet pipe and the outlet pipe, the opposite sides of the inlet pipe and the outlet pipe, the three inlet pipe and the one outlet pipe, the valve cavity can be made longer, a plurality of inputs can be connected and converted into the same output, and the construction amount of welding the pipe elbow is reduced; the embodiment is mainly applied to places for changing the direction of the conveying pipeline, can actually reduce the number of pipeline elbows, reduces the pipeline bending angle after installing the valve, and is particularly suitable for medium mixed conveying, such as feed multi-input mixing.

As shown in fig. 31, embodiment 13, the connection mode of the embodiment is the same as that of embodiment 1, and is characterized in that the central line of the inward shrinking expansion pipe assembly is right angle with the inlet pipe and the outlet pipe, the opposite sides of the inlet pipe and the outlet pipe, two inlet pipes and three outlet pipes, the valve cavity can be made longer, a plurality of inputs can be connected and converted into a plurality of outputs, and the construction amount of welding the pipe elbow is reduced; the embodiment is mainly applied to places for changing the direction of the conveying pipeline, can actually reduce the number of pipeline elbows, reduces pipeline bent angles after installing the valve, and especially supplements the medium for a plurality of tanks or ponds by a plurality of same medium input ends or outputs the medium to a plurality of places by a plurality of output ends, thereby realizing the purposes of medium multipath supplementation, multipath diversion and branch conveying.

As shown in fig. 32, embodiment 14, the connection mode of the embodiment is the same as that of embodiment 1, and is characterized in that the central line of the inward shrinking expansion pipe assembly is right angle with the inlet pipe and the outlet pipe, the opposite sides of the inlet pipe and the outlet pipe, the three inlet pipe and the two outlet pipe, the valve cavity can be made longer, a plurality of inputs can be connected and converted into a plurality of outputs, and the construction amount of welding the pipe elbow is reduced; the embodiment is mainly applied to places for changing the direction of the conveying pipeline, can actually reduce the number of pipeline elbows, reduces pipeline bent angles after installing the valve, and especially supplements the medium for a plurality of tanks or ponds by a plurality of same medium input ends or outputs the medium to a plurality of places by a plurality of output ends, thereby realizing the purposes of medium multipath supplementation, multipath diversion and branch conveying.

Fig. 33 to 38 show embodiments 15 to 21, which are respectively identical in structure with respect to embodiments 9 to 14, and in the case of having the features of the above embodiments, an anti-stacking component (80) for applying powder is added, mainly for powder conveyance and the like.

Fig. 39 and embodiment 22 are based on embodiment 21 of fig. 38, and extension pipe assemblies (810) and (820) of the assembly (80) are added to realize different flange standard switching connection, for example, an inlet and an outlet of (810) are respectively a standard flange or a national standard flange, or the connection size of a pipeline is prolonged, so that the defects of design or replacement of different standard valves of old products are overcome.

The connection mode and the characteristics of each part of each embodiment of the inward shrinkage type are shown in the above, the problem of folds when the valve seat extends and deforms is effectively avoided through the valve seat assembly (20) of the inward shrinkage type expansion pipe, and the support of the valve seat (201) of the expansion pipe is realized.

The embodiment with the anti-stacking component (80) is characterized in that the accumulation is prevented by sucking accumulated materials through pipeline equipment through pressure fluctuation at the end of a conveying pipeline, so that residual media in the valve body (101) do not exceed the accommodating limit of a cavity, and the damage of the inward-shrinking expansion pipe component (20) caused by excessive accumulation is avoided;

In all the embodiments, the set value of the aeration or filling, (the reference value is sea level standard atmospheric pressure 0, the actual pressure is about 1bar, and according to each standard, the standard atmospheric pressure is uniformly defined as 0bar, namely the reference value of an actual pressure gauge is 0, the actual operation valve pressure refers to the actual gauge pressure, namely the gauge pressure is 0 bar=the actual sea level pressure 1bar, the actual gauge pressure is in a state of 0.1 mpa=1 bar, the pressure value is the gauge pressure, the actual reference sea level is 2 bar), the opening and closing control of the valve is carried out according to the design choice of the actual medium pressure, and the set value is larger than the medium pressure so as to ensure that the expansion pipe can expand enough size and close the medium channel; restoring normal pressure after releasing the pressure, namely, the standard atmospheric pressure of the reference value is about 0.1Mpa, and at the moment, resetting by self elasticity and opening the valve;

when in inflation, the air pressure is between 0Mpa and 2.0 Mpa; or other expressions, between 0bar and 20 bar;

when the liquid is filled, because of incompressibility of the liquid, the external control equipment controls the liquid to enter and discharge, after the liquid is cut off, the retention pressure is controlled, and the retention pressure of the filled liquid is set to be less than 10Mpa or 100bar;

the above is a partial example of the present solution, but it should be noted that the present solution is a single valve, which is part of the whole application system, is a participant in the operation of the system, and is not all of the system. The scheme is a means for realizing the operation of the system by being independently used or matched with other equipment in the system, and does not have all functions of the system. Meanwhile, the function of the scheme is realized, and the control system, the power system, the conveying system, the protection system and the like of the system are matched to be finally realized, so that the embodiment exists in the whole system and is supported by the system or other system equipment to operate together, and finally, the product of the system design function is achieved. The practical application scope of the scheme is described and is not limited to the simple scope described in the embodiment.

It will be evident to those skilled in the art that the present invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to specific embodiments, and that the embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

Claims

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 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:

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;

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;

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

the medium contact surface inside the valve is not treated;

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