CN218178035U

CN218178035U - Adjustable self-locking valve for pipe explosion of fluid pipeline

Info

Publication number: CN218178035U
Application number: CN202221392712.9U
Authority: CN
Inventors: 陈凯锋; 王昆; 张�雄; 骆律源
Original assignee: Central and Southern China Municipal Engineering Design and Research Institute Co Ltd
Current assignee: Central and Southern China Municipal Engineering Design and Research Institute Co Ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-12-30
Anticipated expiration: 2032-06-06

Abstract

The utility model discloses a fluid pipeline tube explosion self-locking valve with adjustable, include: the lower valve body is connected with the upper valve body in a sealing way, the lower valve body and the upper valve body jointly form a cavity structure, and the flow limiter is movably arranged in the cavity structure; the flow-limiting piece comprises a sealing hemisphere for blocking the upper valve body, a plurality of adjusting cushion blocks arranged below the sealing hemisphere, and an adjusting hemisphere arranged below the adjusting cushion blocks, wherein the adjusting cushion blocks are detachably connected. When the fluid pipeline bursts, the tube burst self-locking valve can cut off the fluid pipeline instantly, so that fluid leakage is prevented, and accidents are avoided.

Description

Adjustable self-locking valve for pipe explosion of fluid pipeline

Technical Field

The utility model belongs to the technical field of fluid valve, concretely relates to fluid pipeline explodes pipe self-locking valve with adjustable.

Background

When a pipeline for conveying fluid (water, steam, gas, liquid and the like) bursts suddenly, if the pipeline is not closed in time, the fluid can be seriously leaked, and accidents are caused. There are currently a considerable number of accident cases.

And the prior fluid pipeline cannot be automatically closed in time during pipe explosion, so that potential safety hazards exist, and a proper pipe explosion self-locking valve is urgently needed to solve the problem.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a fluid pipeline explodes pipe self-locking valve with adjustable, when the fluid pipeline explodes the pipe, this explode pipe self-locking valve can cut off the fluid pipeline in the twinkling of an eye, prevents that the fluid from leaking, avoids the occurence of failure.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: an adjustable fluid line booster latching valve comprising: the lower valve body is connected with the upper valve body in a sealing way, the lower valve body and the upper valve body jointly form a cavity structure, and the flow limiter is movably arranged in the cavity structure;

the current limiter is including being used for blockking up go up the sealed hemisphere of valve body, a plurality of set up in sealed hemisphere below the regulation cushion, set up in adjust the regulation hemisphere of cushion below, it is a plurality of adjust the cushion and be detachable connection.

Preferably, the current limiter further comprises an adjusting screw, the bottom of the adjusting screw sequentially penetrates through the sealing hemisphere, the adjusting cushion block and the adjusting hemisphere from top to bottom, the adjusting hemisphere is a rubber hemisphere, a hemispherical groove is formed in the upper surface of the adjusting hemisphere, a pressing plate is connected to the bottom end of the adjusting screw, the bottom surface of the pressing plate and the bottom surface of the adjusting hemisphere form a continuous curved surface, and an adjusting nut is screwed to the top end of the adjusting screw.

Preferably, the inner wall of the upper valve body is provided with a flow-limiting sealing surface for clamping and fixing with the sealing hemisphere.

Preferably, the side wall of the upper valve body is provided with a restorer, and the restorer comprises a first communicating pipeline, a second communicating pipeline and a restoring rod which are arranged in the side wall of the upper valve body;

the valve body comprises an upper valve body, a lower valve body, a first communicating pipeline, a second communicating pipeline, a reset rod and a baffle, wherein the top end of the first communicating pipeline extends to the outer surface of the upper valve body, the bottom end of the first communicating pipeline extends to the inner wall of the upper valve body, the bottom end of the first communicating pipeline is located below a sealing surface, the right end of the second communicating pipeline is communicated with the first communicating pipeline, the left end of the second communicating pipeline extends to the inner wall of the upper valve body, the left end of the second communicating pipeline is located above the sealing surface, the reset rod penetrates through the first communicating pipeline, the top end of the reset rod is connected with the top end of the first communicating pipeline in a sealed clamping mode, and the bottom end of the reset rod is connected with the baffle used for blocking the bottom end opening of the first communicating pipeline.

Preferably, the inner side wall of the top end of the first communication pipeline is provided with a sealing thread for being in sealing connection with the reset rod.

Preferably, the inner wall of the upper valve body is provided with a sealing gasket for sealing connection with the baffle.

Preferably, the top end of the reset rod is provided with a disk.

Preferably, the lower valve body is fixed with the upper valve body in a threaded manner.

Preferably, the inner wall of the upper valve body is provided with a valve body sealing gasket for sealing connection with the lower valve body.

Preferably, the lower valve body and the upper valve body are both transparent shells.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model provides a pair of fluid pipeline tube explosion self-locking valve with adjustable, when fluid pipeline tube explosion, this tube explosion self-locking valve can prevent that the fluid from leaking in the twinkling of an eye cutting off the fluid pipeline, avoids the occurence of failure. The valve also has an adjusting function, and the valve has a wider flow application range by changing the number of the adjusting cushion blocks or rotating two adjusting modes of the adjusting screw rod, so that the normal flow of a pipeline is not influenced, and the valve can be self-locked by pipe explosion. The valve also has a reset function, and after the pipe burst accident is repaired, the valve can be reset through the restorer, so that the fluid pipeline is normally put into use again. And the valve adopts a split design, so that the valve is convenient to manufacture and maintain.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings required for the technical description of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic cross-sectional structural view of an adjustable fluid pipeline pipe burst self-locking valve provided by the present invention;

fig. 2 is a schematic structural view of a flow limiter of an adjustable self-locking valve for pipe burst of a fluid pipeline according to the present invention;

fig. 3 is a schematic view of a sectional structure of an upper valve body of an adjustable fluid pipeline pipe burst self-locking valve provided by the present invention.

In the figure: 1. a lower valve body; 2. an upper valve body; 3. a current limiter; 4. a repositor; 5. a valve body gasket; 201. a flow restrictor sealing surface; 301. sealing the hemisphere; 302. adjusting the cushion block; 303. adjusting the hemisphere; 304. adjusting the screw rod; 305. pressing a plate; 306. adjusting the nut; 307. a hemispherical recess; 401. a first communicating pipe; 402. a second communicating pipe; 403. a reset lever; 404. a baffle plate; 405. sealing the threads; 406. sealing gaskets; 407. a disk.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The specific embodiment is as follows:

the present embodiment provides an adjustable self-locking valve for pipe explosion of fluid pipeline, as shown in fig. 1-3, comprising: the valve comprises a lower valve body 1 connected with an upstream pipeline (not shown in the figure), an upper valve body 2 connected with a downstream pipeline (not shown in the figure) and a flow limiter 3, wherein the lower valve body 1 is hermetically connected with the upper valve body 2, the lower valve body 1 and the upper valve body 2 jointly form a cavity structure, and the flow limiter 3 is movably arranged in the cavity structure;

the flow limiter 3 comprises a sealing hemisphere 301 for blocking the upper valve body 2, a plurality of adjusting cushion blocks 302 arranged below the sealing hemisphere 301, and an adjusting hemisphere 303 arranged below the adjusting cushion blocks 302, wherein the adjusting cushion blocks 302 are detachably connected.

Specifically, when the valve is in standing, the flow limiter 3 is clamped and fixed with the lower valve body 1 under the action of gravity. In this embodiment, the interior of the lower valve body 1 can be of a tapered cavity structure, and the bottom of the flow limiter 3 can be clamped to the bottom in the tapered cavity.

When fluid flows through, the fluid of the upstream pipeline enters the lower valve body 1 and then flows into the downstream pipeline from the upper valve body 2. In the process, the fluid impacts the flow restrictor 3 upwards, and the fluid can push the flow restrictor 3 to be suspended in the conical cavity. When the flow of the pipeline is reduced, the flow velocity is reduced, the thrust force is reduced, the gravity enables the flow restrictor 3 to fall, the flow area of the flow restrictor 3 and the conical cavity is reduced, at the moment, the flow velocity of the fluid between the flow restrictor 3 and the conical cavity is increased, the thrust force is increased, the flow restrictor 3 stops falling, and the low hovering state is maintained. When the flow of the pipeline is increased, the flow velocity is increased, the thrust force is increased, the flow restrictor 3 is pushed to be increased, the flow area between the flow restrictor 3 and the conical cavity is increased, at the moment, the flow velocity of the fluid between the flow restrictor 3 and the conical cavity is reduced, the thrust force is reduced, the flow restrictor 3 stops rising, and the high hovering state can be maintained. Therefore, in this embodiment, the current limiter 3 may be adaptively adjusted according to the flow rate.

When the pipe is burst, the flow is increased instantly, the flow velocity is increased, the thrust is increased sharply, and the flow limiter 3 is pushed to rise rapidly until the flow limiter is connected with the upper valve body 2 in a sealing and clamping mode, so that the fluid pipeline is cut off. After that, the upper part of the flow limiter 3 is released, the lower part still bears the pressure in the fluid, the pressure difference between the inside and the outside causes the flow limiter 3 to be tightly attached to the inner wall of the upper valve body 2, the cut-off state of the pipeline is maintained, and accidents caused by fluid leakage can be avoided.

In this embodiment, as shown in fig. 2, a plurality of the adjusting blocks 302 are detachably connected. The number of the adjusting blocks 302 can be adjusted according to the rated flow of the pipeline, so as to adjust the weight of the flow limiter 3. The larger the weight of the flow limiter 3 is, the larger the flow rate required for pushing the flow limiter 3 to suspend is, namely the larger the rated flow rate of a pipeline applicable to the valve is; the smaller the weight of the flow limiter 3 is, the smaller the flow rate required for pushing the flow limiter 3 to suspend is, that is, the smaller the rated flow rate of the pipeline suitable for the valve is.

The flow limiter 3 further comprises an adjusting screw 304, the bottom of the adjusting screw 304 sequentially penetrates through the sealing hemisphere 301, the adjusting cushion block 302, the adjusting hemisphere 303 and extends to the bottom of the adjusting hemisphere 303, the adjusting hemisphere 303 is a rubber hemisphere, a hemispherical groove 307 is formed in the upper surface of the adjusting hemisphere 303, a pressing plate 305 is connected to the bottom end of the adjusting screw 304, the bottom surface of the pressing plate 305 and the bottom surface of the adjusting hemisphere 303 form a continuous curved surface, and an adjusting nut 306 is screwed on the top end of the adjusting screw 304.

Specifically, the bottom end of the adjusting nut 306 may abut against the upper surface of the sealed hemisphere 301, and when the adjusting nut 306 is twisted, the adjusting screw 304 may move upward relative to the sealed hemisphere 301, and at this time, the pressing plate 305 may extrude the adjusting hemisphere 303 upward, so that the volume of the hemispherical recess 307 decreases, the shape of the adjusting hemisphere 303 also changes accordingly, and the resistance characteristic of the lower surface of the adjusting hemisphere 303 may be adjusted, thereby changing the magnitude of the thrust of the fluid to the flow restrictor 3.

By combining the two adjusting modes, the valve has a wider flow application range. The normal flow of the pipeline is not influenced, and the self-locking of the pipe can be realized by pipe explosion.

In addition, in this embodiment, as shown in fig. 3, a sealing surface 201 of the current limiter, which is used for being clamped and fixed with the sealing hemisphere 301, is provided on the inner wall of the upper valve body 2.

During pipe explosion, the flow limiter 3 is in close contact with the inner wall of the upper valve body 2, and the upper surface of the sealing hemisphere 301 is in sealing contact with the sealing surface 201 of the flow limiter, so that a pipeline is disconnected.

After the pipe explosion accident is processed. If the upstream pipeline is depressurized, the flow restrictor 3 can automatically fall due to the gravity, and the valve is recovered to be used. If the upstream pipeline still presses the pressure, at this moment the current limiter 3 can not fall down automatically due to the action of the upper and lower pressure difference, the pipeline still is in the open circuit state, and the valve can not be used normally.

In order to solve the above problem, in this embodiment, the side wall of the upper valve body 2 is provided with a restorer 4, and the restorer 4 includes a first communication pipeline 401, a second communication pipeline 402, and a restoring rod 403 which are arranged in the side wall of the upper valve body 2;

first communicating pipe 401 top extends to the follow go up 2 surfaces of valve body, first communicating pipe 401 bottom extends to go up 2 inner walls of valve body, just first communicating pipe 401 bottom is located sealed face 201 below, second communicating pipe 402 right-hand member with first communicating pipe 401 intercommunication, second communicating pipe 402 left end extends to go up 2 inner walls of valve body, just second communicating pipe 402 left end is located sealed face 201 top, release link 403 runs through first communicating pipe 401, release link 403 top with the sealed joint in first communicating pipe 401 top, release link 403 bottom is connected with and is used for blockking up the baffle 404 of first communicating pipe 401 bottom opening.

The reset device 4 is opened to fill the space between the upper part of the flow restrictor 3 and an isolation valve (not shown in the figure), and the pressure difference between the upper part and the lower part of the flow restrictor 3 is reduced. After the pressure is balanced, the restrictor 3 can fall again due to gravity, and then the restorer 4 is closed to the initial position, and the valve is recovered to be used.

Specifically, when the repositor 4 is closed, the baffle 404 is in sealing connection with the bottom opening of the first communication pipeline 401, so that fluid at the lower part of the flow restrictor 3 cannot enter the first communication pipeline 401. At this time, the repositor 4 can be opened, that is, the repositioning rod 403 is moved downward, so that the baffle 404 is separated from the bottom opening of the first communicating pipe 401, the fluid at the lower part of the flow restrictor 3 can enter the first communicating pipe 401, then the second communicating pipe 402, and finally the upper part of the flow restrictor 3, so that the difference between the upper pressure and the lower pressure of the flow restrictor 3 is eliminated, and the flow restrictor 3 can fall to be separated from the inner wall of the upper valve body 2, so that the pipeline is recovered to be used normally.

Wherein, the inner side wall of the top end of the first communicating pipe 401 is provided with a sealing thread 405 for being in sealing connection with the reset rod 403. The tightness between the first communicating pipe 401 and the reset rod 403 can be enhanced, and the fluid can be prevented from running off through the top end of the first communicating pipe 401.

Wherein, the inner wall of the upper valve body 2 is provided with a sealing gasket 406 which is used for being connected with the baffle 404 in a sealing way. The sealing of the baffle 404 with the bottom opening of the first communication channel 401 is enhanced to prevent fluid from flowing into the first communication channel 401 when the repositioner 4 is in the closed state.

Wherein, the top of the reset rod 403 is provided with a disc 407. The manual operation of constructors is facilitated.

In this embodiment, the lower valve body 1 and the upper valve body 2 may be fixed by screw connection.

Specifically, when the through diameter of the valve is more than or equal to DN50, the connection surfaces of the upper valve body 2 and a downstream pipeline, the lower valve body 1 and an upstream pipeline, and the upper valve body 2 and the lower valve body 1 can be connected by flanges; when the drift diameter < DN50, the upper valve body 2 and the downstream pipeline, the lower valve body 1 and the upstream pipeline, and the connecting surface of the upper valve body 2 and the lower valve body 1 can be connected by screw threads.

In this embodiment, the inner wall of the upper valve body 2 is provided with a valve body sealing gasket 5 for sealing connection with the lower valve body 1. The valve body sealing gasket 5 can enhance the sealing performance of the connection between the upper valve body 2 and the lower valve body 1.

Finally, both the lower valve body 1 and the upper valve body 2 can be transparent shells. The valve body is made of transparent materials, and the working condition of the current limiter can be observed. The valve body can also be provided with scales on the side wall, and can be used as a flowmeter.

Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the following descriptions are only provided for illustrating the technical solutions of the present invention and not for limiting the same: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable fluid line pipe burst self-locking valve, comprising: the valve comprises a lower valve body (1) connected with an upstream pipeline, an upper valve body (2) connected with a downstream pipeline and a flow limiter (3), wherein the lower valve body (1) is hermetically connected with the upper valve body (2), the lower valve body (1) and the upper valve body (2) jointly form a cavity structure, and the flow limiter (3) is movably arranged in the cavity structure;

the flow limiter (3) comprises a sealing hemisphere (301) used for blocking the upper valve body (2), a plurality of adjusting blocks (302) arranged below the sealing hemisphere (301), and adjusting hemispheres (303) arranged below the adjusting blocks (302), wherein the adjusting blocks (302) are detachably connected.

2. The adjustable fluid pipeline pipe burst self-locking valve as claimed in claim 1, wherein the flow limiter (3) further comprises an adjusting screw (304), the bottom of the adjusting screw (304) sequentially penetrates through the sealing hemisphere (301), the adjusting cushion block (302) and the adjusting hemisphere (303) from top to bottom, the adjusting hemisphere (303) is a rubber hemisphere, a hemispherical groove (307) is formed in the upper surface of the adjusting hemisphere (303), a pressing plate (305) is connected to the bottom end of the adjusting screw (304), the bottom surface of the pressing plate (305) and the bottom surface of the adjusting hemisphere (303) form a continuous curved surface, and an adjusting nut (306) is screwed to the top end of the adjusting screw (304).

3. The adjustable self-locking valve for pipe explosion of fluid pipeline as claimed in claim 1, wherein the inner wall of the upper valve body (2) is provided with a sealing surface (201) of a flow restrictor for clamping and fixing with the sealing hemisphere (301).

4. The adjustable self-locking valve for pipe bursting of the fluid pipeline according to claim 3, wherein a restorer (4) is arranged on the side wall of the upper valve body (2), and the restorer (4) comprises a first communicating pipeline (401), a second communicating pipeline (402) and a restoring rod (403) which are arranged in the side wall of the upper valve body (2);

first communicating pipe (401) top extends to the follow go up valve body (2) surface, first communicating pipe (401) bottom extends to go up valve body (2) inner wall, just first communicating pipe (401) bottom is located sealed face (201) below, second communicating pipe (402) right-hand member with first communicating pipe (401) intercommunication, second communicating pipe (402) left end extends to go up valve body (2) inner wall, just second communicating pipe (402) left end is located sealed face (201) top, release link (403) run through first communicating pipe (401), release link (403) top with first communicating pipe (401) top sealing joint, release link (403) bottom is connected with and is used for blockking up baffle (404) of first communicating pipe (401) bottom open-ended.

5. The adjustable self-locking valve for pipe bursting of a fluid pipeline according to claim 4, wherein the inner side wall of the top end of the first communication pipeline (401) is provided with a sealing thread (405) for sealing connection with the reset rod (403).

6. An adjustable fluid pipeline pipe explosion self-locking valve as claimed in claim 4, wherein the inner wall of the upper valve body (2) is provided with a sealing gasket (406) for sealing connection with the baffle (404).

7. The adjustable self-locking valve for fluid pipeline explosion according to claim 4, wherein a disc (407) is arranged at the top end of the reset rod (403).

8. The adjustable self-locking valve for pipe bursting of fluid pipelines according to claim 1, wherein the lower valve body (1) is fixed with the upper valve body (2) in a threaded manner.

9. The adjustable self-locking valve for pipe bursting of a fluid pipeline according to claim 8, wherein the inner wall of the upper valve body (2) is provided with a valve body sealing gasket (5) for sealing connection with the lower valve body (1).

10. The adjustable fluid pipeline pipe explosion self-locking valve as claimed in claim 1, wherein the lower valve body (1) and the upper valve body (2) are transparent shells.