CN220523426U

CN220523426U - Labyrinth high-pressure difference flow regulating angle valve

Info

Publication number: CN220523426U
Application number: CN202420063639.3U
Authority: CN
Inventors: 赵东; 赵龙龙; 李建佩; 刘义; 王宏祥; 李浩雷
Original assignee: Xi'an Pump & Valve General Factory Co ltd
Current assignee: Xi'an Pump & Valve General Factory Co ltd
Priority date: 2024-01-11
Filing date: 2024-01-11
Publication date: 2024-02-23
Anticipated expiration: 2034-01-11

Abstract

The utility model discloses a labyrinth high-pressure difference flow regulating angle valve, which comprises a valve body, a labyrinth body, a series bushing and a valve rod, wherein the valve body is provided with a valve seat; the labyrinth body is arranged in the valve body, and the input end of the valve body is communicated with the input end of the labyrinth body; the series bushing is arranged on the inner side of the labyrinth body and is in contact sealing with the inner side of the labyrinth body, and a plurality of cavities are formed in the inner side of the series bushing along the length direction of the series bushing; the valve rod is arranged in the serial bushing, and a plurality of depressurization grooves are formed in the two sides of the valve rod in a staggered manner along the length direction of the valve rod; the plurality of staggered depressurization grooves are respectively arranged corresponding to the plurality of cavities; the valve rod is connected with the valve body in a sliding way and can move along the axial direction of the valve rod; when the valve rod axially moves, the plurality of cavities are communicated through the plurality of depressurization grooves, so that the output end of the labyrinth body is communicated with the inside of the series bushing, and the inside of the series bushing is communicated with the output end of the valve body. The labyrinth body is used for carrying out primary depressurization, and can also carry out secondary depressurization while regulating the flow, so that the depressurization effect of the valve structure is effectively improved.

Description

Labyrinth high-pressure difference flow regulating angle valve

Technical Field

The application relates to the field of chemical industry and the field of sewage treatment, in particular to a labyrinth high-pressure difference flow regulating angle valve.

Background

In the technical problem of improving the yield of the synthetic ammonia reaction, the use of the original high-pressure difference orifice plate valve cannot meet the demand flow by changing the number of the orifices, and a valve body structure meeting the high-pressure drop and the flow under the condition of not replacing the valve body is urgently needed.

The labyrinth flow regulating valve in the prior art generally has the structure that the labyrinth flow regulating valve is depressurized through a tortuous flow passage arranged on the outer side of the labyrinth body, then the flow is regulated through a gap between the valve rod and the bushing, and the depressurization effect cannot be further increased in the process that a medium passes through the gap between the valve rod and the bushing, so that the overall depressurization effect of the labyrinth flow regulating valve in the prior art is poor.

Disclosure of Invention

Based on the above problems, the utility model aims to provide the labyrinth high-pressure-difference flow regulating angle valve, which solves the technical problem that the overall pressure reducing effect of the labyrinth flow regulating valve in the prior art is poor, realizes that the primary pressure reducing can be carried out through the labyrinth body, can carry out the secondary pressure reducing while regulating the flow (namely, in the process that a medium passes through between a valve rod and a bushing), and effectively improves the overall pressure reducing effect of the flow regulating valve.

The application provides a labyrinth high-pressure difference flow regulating angle valve, which comprises a valve body, a labyrinth body, a series bushing and a valve rod; the labyrinth body is arranged in the valve body, and the input end of the valve body is communicated with the input end of the labyrinth body; the series bushing is arranged on the inner side of the labyrinth body, is in contact seal with the inner side of the labyrinth body, and is provided with a plurality of cavities along the length direction of the inner side; the valve rod is arranged in the serial bushing, and a plurality of depressurization grooves are formed in the two sides of the valve rod in a staggered mode along the length direction of the valve rod; the plurality of staggered depressurization grooves are respectively arranged corresponding to the plurality of cavities; the valve rod is connected with the valve body in a sliding way and can move along the axial direction of the valve rod; when the valve rod axially moves, the plurality of cavities can be communicated through the plurality of depressurization grooves, so that the output end of the labyrinth body is communicated with the inside of the series bushing, and the inside of the series bushing is communicated with the output end of the valve body.

In one possible implementation manner, a plurality of depressurization channels are annularly arranged on the outer side of the labyrinth body along the direction of the self axis; the depressurization channel is of a zigzag structure; the input end of the depressurization channel is communicated with the input end of the valve body, and the output end of the depressurization channel can be communicated with the inside of the series bushing.

In one possible implementation, the depressurization channel includes a first channel and a second channel; the first channel is communicated with the second channel; the input end of the first channel is communicated with the input end of the valve body; the output end of the second channel can be communicated with the interior of the series bushing; the second channel is a zigzag structure.

In one possible implementation, the application provides a labyrinth high differential pressure flow regulating angle valve further comprising a valve cover; the valve cover is detachably connected to the end part of the valve body; the end part of the valve rod, which extends out of the valve body, penetrates through the valve cover and is in sliding connection with the valve cover.

In one possible implementation, the application provides a labyrinth high differential pressure flow regulating angle valve further comprising a sealing plate; the sealing piece is arranged between the valve cover and the labyrinth body; the sealing piece is close to the outer side of the end part of the labyrinth body and is provided with a plurality of through holes, and the output end of the depressurization channel is communicated with the through holes.

In one possible implementation, the application provides a labyrinth high differential pressure flow regulating angle valve further comprising a packing seal system and a packing gland; the packing sealing system is arranged between the valve rod and the valve cover, and the valve rod is in sliding connection with the packing sealing system; the packing pressing sleeve is abutted with the packing sealing system and can fix the packing sealing system.

In one possible implementation, the present application provides a labyrinth high differential pressure flow regulating angle valve further comprising a valve seat; the valve seat is arranged on the outer side of the valve rod, which is close to the output end of the valve body, and is respectively in contact and seal with the valve rod and the series bushing.

In one possible implementation manner, a pressure reducing cavity is further formed in the valve cover; the valve rod passes through the depressurization cavity, and the depressurization cavity is communicated with the output end of the depressurization channel, and the depressurization cavity can be communicated with the inside of the series bushing.

One or more technical solutions provided in the present application have at least the following technical effects or advantages:

according to the labyrinth type pressure reducing valve, the valve body, the labyrinth body, the series bushing and the valve rod are adopted, the labyrinth body is arranged in the valve body, and the input end of the valve body is communicated with the input end of the labyrinth body, so that a medium can enter the labyrinth body from the input end of the valve body for one-time pressure reduction;

the inner side of the series bushing is provided with a plurality of cavities along the length direction of the series bushing; simultaneously, the valve rod is arranged in the serial bushing, and a plurality of pressure reducing grooves are formed in the two sides of the valve rod in a staggered mode along the length direction of the valve rod; the staggered plurality of depressurization grooves are respectively arranged corresponding to the plurality of cavities, so that when the valve rod slides along the axial direction, the plurality of cavities can be communicated through the plurality of depressurization grooves, meanwhile, the output end of the labyrinth body is communicated with the inside of the series bushing, finally, the inside of the series bushing is communicated with the output end of the valve body, the medium is gradually output from the output end of the labyrinth body and gradually passes through the staggered plurality of depressurization grooves to pass through the plurality of cavities in a tortuous manner, finally, the medium leaves from the output end of the valve body, the medium is designed to be subjected to secondary depressurization through the medium tortuous flow, namely, the secondary depressurization can be carried out while the flow is regulated (namely, the medium passes through the space between the valve rod and the bushing);

the labyrinth flow regulating valve effectively solves the technical problem that the overall pressure reducing effect of the labyrinth flow regulating valve in the prior art is poor, realizes primary pressure reduction through the labyrinth body, can perform secondary pressure reduction while regulating flow (namely in the process that a medium passes through between the valve rod and the bushing), and effectively improves the overall pressure reducing effect of the flow regulating valve.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments of the present utility model or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of a labyrinth high differential pressure flow regulating angle valve provided by an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a front view of a labyrinth high differential pressure flow regulating angle valve according to an embodiment of the present utility model after a valve body is removed;

fig. 3 is an isometric view of a valve stem of a labyrinth high differential pressure flow regulating angle valve provided by an embodiment of the present utility model.

Icon: 1-a valve body; 2-maze; 21-a depressurization channel; 210-a first channel; 211-a second channel; 3-a tandem liner; 31-cavity; 4-a valve rod; 41-a depressurization tank; 5-a valve cover; 6-sealing sheets; 61-through holes; 7-a packing sealing system; 8-packing pressing sleeve; 9-valve seat; 10-a depressurization chamber; 11-a liquid inlet; 12-a liquid outlet; 13-a packing platen; 14-a packing platen screw; 15-a packing press plate nut; 16-valve cap screw; 17-a valve cap nut; 18-erosion sleeve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

The embodiment of the application provides a labyrinth high-pressure difference flow regulating angle valve, which comprises a valve body 1, a labyrinth body 2, a series bushing 3 and a valve rod 4; the labyrinth body 2 is arranged in the valve body 1, and the input end of the valve body 1 is communicated with the input end of the labyrinth body 2; the series bush 3 is arranged on the inner side of the labyrinth body 2 and is in contact seal with the inner side of the labyrinth body 2, and a plurality of cavities 31 are formed on the inner side of the series bush 3 along the length direction of the series bush; the valve rod 4 is arranged in the serial bushing 3, and a plurality of depressurization grooves 41 are arranged on two sides of the valve rod 4 in a staggered manner along the length direction of the valve rod; the plurality of staggered depressurization grooves 41 are respectively arranged corresponding to the plurality of cavities 31; the valve rod 4 is slidably connected with the valve body 1 and can move along the axial direction of the valve rod 4; when the valve rod 4 moves axially, the plurality of cavities 31 can be communicated through the plurality of depressurization grooves 41, so that the output end of the labyrinth body 2 is communicated with the inside of the tandem bushing 3, and the inside of the tandem bushing 3 is communicated with the output end of the valve body 1.

Specifically, the input end of the valve body 1 is provided with a liquid inlet 11 at one side of the valve body 1, the liquid inlet 11 is communicated with the input end of the labyrinth body 2, and high-pressure medium can be conveyed to the input end of the labyrinth body 2 through the liquid inlet 11, so that the pressure is reduced through the labyrinth body 2; similarly, the output end of the valve body 1 is provided with a liquid outlet 12 at the other side of the valve body 1, and a high-pressure medium flows in through the input end of the valve body 1 and flows out through the liquid outlet 12 of the valve body 1 after passing through the gaps of the labyrinth body 2, the series bushing 3 and the valve rod 4. The pressure reducing groove 41 of the valve stem 4 has a shape in which a plurality of inclined surfaces and a flat surface are combined, and in practice, the shape is not limited to this shape, and may be a combination of a curved surface and a curved surface. The staggered arrangement of the plurality of depressurization grooves 41 allows the high pressure medium to travel longer through the gap between the tandem bushing 3 and the valve stem 4, thereby regulating the flow rate while further depressurizing.

In one possible implementation manner, a plurality of depressurization channels 21 are annularly arranged on the outer side of the labyrinth body 2 along the direction of the self axis; the depressurization channel 21 is of a meandering configuration; the input end of the depressurization passage 21 communicates with the input end of the valve body 1, and the output end of the depressurization passage 21 can communicate with the inside of the tandem liner 3.

Specifically, the zigzag structure of the depressurization channel 21 may include a groove flow channel for multiple diversion and confluence, preferably, the zigzag structure adopts a right-angle turning mode, and when the high-pressure medium flows through the surface of the labyrinth body 2, the flow speed is reduced by a little and the pressure is reduced by a little every time the high-pressure medium passes through the right-angle turning, so that the effect of greatly depressurizing is achieved after the high-pressure medium flows through the whole groove flow channel.

In one possible implementation, the depressurization channel 21 includes a first channel 210 and a second channel 211; the first channel 210 communicates with the second channel 211; the input end of the first channel 210 is communicated with the input end of the valve body 1; the output end of the second channel 211 can communicate with the interior of the tandem liner 3; the second channel 211 is a meandering structure.

The first channel 210 is formed by a group of small channels parallel to the medium flowing direction, the second channel 211 is formed by two groove channels with a zigzag structure, the medium flows through the first channel 210 and is split into a plurality of channels, the liquid medium is split into two channels when the medium enters the second channel 211, and the medium is collected into one channel when the medium is about to leave the surface of the labyrinth body 2. The form of the first and second channels 210 and 211 is not limited to this structure, and various split-flow converging manners may be combined.

In one possible implementation, the embodiment of the present application provides a labyrinth high differential pressure flow regulating angle valve further comprising a valve cover 5; the valve cover 5 is detachably connected to the end part of the valve body 1; the end of the valve rod 4 extending out of the valve body 1 penetrates through the valve cover 5 and is in sliding connection with the valve cover 5.

In particular, the valve cover 5 is provided to ensure sealing of the flow regulating valve, and the valve cover 5 may be fixed to the end of the valve body 1 by means of a screw nut, wherein a sliding sealing structure is required between the valve rod 4 and the valve cover 5, so that the valve rod 4 may be axially displaced relative to the serial bushing 3.

In one possible implementation, the embodiment of the present application provides a labyrinth high differential pressure flow regulating angle valve further comprising a sealing plate 6; the sealing piece 6 is arranged between the valve cover 5 and the labyrinth body 2; the sealing sheet 6 is provided with a plurality of through holes 61 on the outer side of the end portion near the labyrinth body 2, and the output end of the depressurization channel 21 is communicated with the through holes 61.

Specifically, the sealing sheets 6 are of an annular structure, the number of the sealing sheets 6 can be one or a plurality of sealing sheets, and the sealing sheets can be selected and used according to practical situations, and the embodiment of the utility model adopts the contact sealing arrangement of the two annular sealing sheets 6, and the cross section shape of the clamping of the two sealing sheets 6 is V-shaped. The outer side of the end part of the labyrinth body 2, which is close to the labyrinth body, is provided with a plurality of through holes 61, and the output end of the depressurization channel 21 is communicated with the through holes 61. The through hole 61 is arranged to allow the high pressure medium to flow out of the depressurization passage 21 of the labyrinth body 2 and then enter the gap between the tandem bushing 3 and the valve rod 4. The shape of the through hole 61 may be square or circular.

In one possible implementation, the embodiment of the present application provides a labyrinth high differential pressure flow regulating angle valve further comprising a packing sealing system 7 and a packing press sleeve 8; the packing sealing system 7 is arranged between the valve rod 4 and the valve cover 5, and the valve rod 4 is in sliding connection with the packing sealing system 7; the packing pressing sleeve 8 is abutted with the packing sealing system 7, and can fix the packing sealing system 7.

Specifically, the packing sealing system 7 and the packing pressing sleeve 8 are arranged to strengthen the sealing capability of the flow regulating valve, and further, the packing pressing plate 13 can be detachably arranged on the upper parts of the valve cover 5 and the packing pressing sleeve 8, and the packing pressing plate and the packing pressing sleeve are matched in a screw nut mode to play a role in sealing and fixing. The packing sealing system 7 is made of graphite sealing materials, generally isostatic pressing graphite materials, and has excellent sealing performance through fine processing and special treatment. The packing system 7 can still maintain good stability and reliability under extreme environments such as high temperature, high pressure, strong corrosion and the like.

In one possible implementation, the embodiment of the present application provides a labyrinth high differential pressure flow regulating angle valve further comprising a valve seat 9; the valve seat 9 is arranged on the outer side of the valve rod 4 close to the output end of the valve body 1, and is respectively in contact and seal with the valve rod 4 and the serial lining 3.

Specifically, in the embodiment of the present application, the valve seat 9 is further provided, so that the end of the valve rod 4 can be effectively abutted, and the reliable seal can be formed after the end of the valve rod 4 is abutted; the valve rod 4 and the valve seat 9 are in a conical surface hard sealing connection mode, so that medium leakage is prevented, and the reliability of the utility model is improved. An erosion sleeve 18 is arranged around the labyrinth body 2. The erosion sleeve 18 can effectively prevent the valve body 1 from being damaged, is replaceable, has low cost and is beneficial to prolonging the service life of the valve structure.

In one possible implementation, the valve cover 5 is also internally provided with a pressure reducing cavity 10; the valve stem 4 passes through the depressurization chamber 10, and the depressurization chamber 10 communicates with the output end of the depressurization passage 21, and the depressurization chamber 10 can communicate with the inside of the tandem bushing 3.

Specifically, in the embodiment of the application, the depressurization chamber 10 is further provided, and the medium after being output from the depressurization channel 21 and depressurized can enter the depressurization chamber 10 again through the through hole 61 on the sealing sheet 6, so that the depressurization function is further played, and after passing through the depressurization chamber 10, the medium finally flows out from the gap between the valve rod 4 and the series bushing 3 through the axial displacement of the valve rod 4.

The working principle of the labyrinth high-pressure difference flow regulating angle valve provided by the embodiment of the application is as follows:

firstly, high-pressure medium enters the valve body 1 from the input end (liquid inlet 11) of the valve body 1, flows through the depressurization channel 21 on the surface of the labyrinth body 2, is subjected to primary depressurization through the diversion confluence and multiple turns of the first channel 210 and the second channel 211, then flows into the depressurization cavity 10 of the valve cover 5 through the through hole 61 on the sealing piece 6, at the moment, the valve rod 4 is moved, so that the high-pressure medium can pass through the gap between the valve rod 4 and the serial bushing 3, the gap between the valve rod 4 and the serial bushing 3 gradually increases along with the continuous outward movement of the valve rod 4, the flow regulating effect is realized, more and more liquid medium flows between the valve rod 4 and the serial bushing 3, and the cavity 31 of the serial bushing 3 is matched with the depressurization groove 41 of the valve rod 4 to regulate the flow of the liquid medium, and secondary depressurization is realized. Finally, the high-pressure medium is greatly depressurized when the medium is about to flow out of the labyrinth body 2 through the output end (the liquid outlet 12) of the valve body 1.

In this specification, each embodiment is described in a progressive manner, and the same or similar parts of each embodiment are referred to each other, and each embodiment is mainly described as a difference from other embodiments.

The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the present application; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions.

Claims

1. The labyrinth high-pressure difference flow regulating angle valve is characterized by comprising a valve body (1), a labyrinth body (2), a series bushing (3) and a valve rod (4);

the labyrinth body (2) is arranged in the valve body (1), and the input end of the valve body (1) is communicated with the input end of the labyrinth body (2);

the series bushing (3) is arranged on the inner side of the labyrinth body (2) and is in contact sealing with the inner side of the labyrinth body (2), and a plurality of cavities (31) are formed in the inner side of the series bushing (3) along the length direction of the series bushing;

the valve rod (4) is arranged in the serial bushing (3), and a plurality of depressurization grooves (41) are formed in the two sides of the valve rod (4) in a staggered mode along the length direction of the valve rod;

the plurality of staggered depressurization grooves (41) are respectively arranged corresponding to the plurality of cavities (31);

the valve rod (4) is slidably connected with the valve body (1) and can move along the axial direction of the valve rod (4);

when the valve rod (4) axially moves, a plurality of cavities (31) can be communicated through a plurality of depressurization grooves (41), so that the output end of the labyrinth body (2) is communicated with the inside of the series bushing (3), and the inside of the series bushing (3) is communicated with the output end of the valve body (1).

2. The labyrinth high-pressure difference flow regulating angle valve as claimed in claim 1, wherein a plurality of depressurization channels (21) are annularly arranged on the outer side of the labyrinth body (2) along the direction of the self axis;

the depressurization channel (21) is of a zigzag structure;

the input end of the pressure reducing channel (21) is communicated with the input end of the valve body (1), and the output end of the pressure reducing channel (21) can be communicated with the inside of the series bushing (3).

3. The labyrinth high differential pressure flow regulating angle valve as defined in claim 2, wherein said depressurization passage (21) comprises a first passage (210) and a second passage (211);

-the first channel (210) communicates with the second channel (211);

the input end of the first channel (210) is communicated with the input end of the valve body (1);

-the output end of the second channel (211) is able to communicate with the interior of the tandem liner (3);

the second channel (211) is a meandering structure.

4. Labyrinth high differential pressure flow regulating angle valve as claimed in claim 2, further comprising a valve cover (5);

the valve cover (5) is detachably connected to the end part of the valve body (1);

the end part of the valve rod (4) extending out of the valve body (1) penetrates through the valve cover (5) and is in sliding connection with the valve cover (5).

5. The labyrinth high differential pressure flow regulating angle valve as claimed in claim 4, further comprising a sealing plate (6);

the sealing piece (6) is arranged between the valve cover (5) and the labyrinth body (2);

the sealing piece (6) is close to the outer side of the end part of the labyrinth body (2) and is provided with a plurality of through holes (61), and the output end of the depressurization channel (21) is communicated with the through holes (61).

6. The labyrinth high differential pressure flow regulating angle valve as claimed in claim 4, further comprising a packing sealing system (7) and a packing press sleeve (8);

the packing sealing system (7) is arranged between the valve rod (4) and the valve cover (5), and the valve rod (4) is in sliding connection with the packing sealing system (7);

the packing pressing sleeve (8) is abutted with the packing sealing system (7) and can fix the packing sealing system (7).

7. Labyrinth high differential pressure flow regulating angle valve as claimed in claim 1, further comprising a valve seat (9);

the valve seat (9) is arranged on the outer side of the valve rod (4) close to the output end of the valve body (1), and is respectively in contact sealing with the valve rod (4) and the series bushing (3).

8. The labyrinth high pressure difference flow regulating angle valve as claimed in claim 4, wherein the valve cover (5) is also provided with a pressure reducing cavity (10) inside;

the valve rod (4) penetrates through the pressure reducing cavity (10), the pressure reducing cavity (10) is communicated with the output end of the pressure reducing channel (21), and the pressure reducing cavity (10) can be communicated with the inside of the series bushing (3).