CN219472813U

CN219472813U - Bleeding valve

Info

Publication number: CN219472813U
Application number: CN202223162522.0U
Authority: CN
Inventors: 闫志阳; 张慰峰; 陈士欣
Original assignee: LIANSU TECHNOLOGY DEVELOPMENT (GUIYANG) CO LTD
Current assignee: LIANSU TECHNOLOGY DEVELOPMENT (GUIYANG) CO LTD
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-08-04
Anticipated expiration: 2032-11-28

Abstract

The utility model relates to the technical field of ball valves, in particular to a bleeding valve, which comprises a sensor and a three-way valve; the three-way valve comprises a valve body; the valve body is provided with a sphere center, a first channel and a second channel which is used for connecting with the main pipeline; the outer wall of the valve body is provided with a boss which is used for assembling the sensor and is communicated with the first channel; the sphere center is provided with a first through hole communicated with the first channel and the second channel. A boss for installing a sensor is arranged on the outer side of the valve body, and the boss is communicated with a first channel of the three-way valve; the first through hole of the sphere center is communicated with the first channel, and the first through hole is always communicated with the second channel, so that the sensor can always detect and feed back the pressure in the pipeline. The pipeline is buried under the ground, the signal is difficult to transmit, the maintenance and the replacement of the sensor are inconvenient, and the pressure sensor is designed and installed at the position of the diffusing small valve, so that the signal transmission and the maintenance are convenient.

Description

Bleeding valve

Technical Field

The utility model relates to the technical field of ball valves, in particular to a bleeding valve.

Background

The PE gas ball valve is used as a control element of the urban PE gas pipeline and is widely applied to the PE gas pipeline. The PE gas ball valve is of standard type and diffusing type, wherein the diffusing type is most applied, the diffusing valve is provided with a diffusing small valve, and when a gas pipeline needs to be overhauled, gas in a downstream pipeline is deflated or replaced, the operation can be carried out through the diffusing small valve. The PE gas ball valve is formed by integrally welding the same PE material as the PE gas pipe, the national standard service life of the PE gas pipe reaches more than 50 years, the PE gas ball valve also has the same service life, however, the PE gas ball valve is complex in structure, the main valve is buried underground, after the ball valve is used for a certain period, the sealing rubber ring is worn or influenced by impurities in a pipeline, the gas leakage condition exists at the installation sealing position of the main valve rod, and at the moment, the leakage position needs to be maintained and new parts are replaced.

However, the urban gas pipelines are long, the number of valve wells is large, the scattering area in the urban area is large, gas enterprises rely on manual daily inspection, leakage problems are difficult to find timely, and the valve parts are maintained and replaced timely on site, so that safety accidents are avoided.

The utility model discloses a ball valve with leak protection detects alarming function at present, including the ball valve body, the surface mounting of ball valve body has the box, fan and casing are installed respectively to the right side at box top from a left side to the right side, the bottom of fan intake pipe and the fixed intercommunication in top of box, the right-hand member of fan tuber pipe and the fixed intercommunication in left side of box, gas concentration sensor is installed to the inner wall of casing, the fixed intercommunication in bottom of casing has the nozzle stub, the surface of nozzle stub is provided with first solenoid valve, the fixed intercommunication in top of box left side has the return bend, the surface of return bend is provided with the second solenoid valve, pressure sensor is installed at the top of box inner chamber, the left side fixedly connected with chlorine box of box bottom, the fixed intercommunication in bottom of box left side has the connecting pipe, the one end of connecting pipe and the fixed intercommunication in left side of chlorine box, the surface by last check valve and the third solenoid valve of being provided with respectively, the left side fixedly connected with box of chlorine box, the inner wall of box is provided with the safety cover, the surface mounting of the wireless protection cover, the wireless protection cover is equipped with the top of the wireless protection cover, the wireless protection device is equipped with the wireless protection device. But the pressure sensor of this ball valve is installed at the top of box inner chamber, and the installation degree of difficulty is great and loaded down with trivial details, is inconvenient for the dismouting of sensor.

Disclosure of Invention

The utility model provides a relief valve, which is used for overcoming the defects in the prior art, wherein a pressure sensor is arranged outside a valve body and is communicated with a second channel in the valve body, so that the pressure condition in a pipeline can be detected, and the pressure sensor is positioned outside the valve body and is convenient to disassemble and assemble.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a relief valve comprises a pressure sensor and a three-way valve; the three-way valve comprises a valve body; the valve body is provided with a sphere center, a first channel and a second channel which is used for connecting with the main pipeline; the outer wall of the valve body is provided with a boss which is used for assembling the pressure sensor and is communicated with the first channel; the sphere center is provided with a first through hole communicated with the first channel and the second through hole.

In the scheme, the relief valve is used for operating after the residual fuel gas in the pipe is required to be exhausted in pipeline maintenance; the relief valve is connected with the two sides of the ball valve on the main gas conveying pipeline along the conveying direction, when gas leakage occurs at the ball valve, the pressure in the pipe can fluctuate, and the pressure sensor communicated with the relief valve can feed back pressure change in real time at the moment, so that workers are reminded of timely overhauling. A boss for installing a pressure sensor is arranged on the outer side of the valve body, and the boss is communicated with a first channel of the three-way valve; the first through hole of the sphere center is communicated with the first channel, and the first through hole is always communicated with the second channel, so that the pressure sensor can always detect and feed back the pressure in the pipeline. Because the pipeline is buried underground, if the pressure sensor is arranged on the main valve, the signal is difficult to transmit and the maintenance and the replacement of the pressure sensor are inconvenient, and the relief valve of the ventilation part is arranged in the valve well and is not buried, so that the pressure sensor is designed and arranged at the relief small valve, and the signal transmission and the maintenance and the replacement of the pressure sensor are convenient.

As one preferable aspect, the boss is provided with an insert for connecting the pressure sensor.

In this scheme, there is stainless steel to connect the mold insert in the boss, and pressure sensor can conveniently install on the mold insert, and the external diameter of mold insert and the internal diameter assorted of boss can strengthen the sealing performance between mold insert and the valve body. Before the pressure sensor is installed, the sealing strip is wound outside the pressure sensor and then matched with the insert, so that the overall tightness is further improved, and leakage of fuel gas is avoided. The pressure sensor is a pressure sensor capable of realizing remote monitoring, and the pressure sensor can timely feed back pressure change conditions in the pipe.

As one preferable scheme, the pressure sensor is in threaded connection with the insert; the pressure sensor is provided with external threads; and the inner wall of the insert is provided with an internal thread matched with the external thread of the pressure sensor.

In this scheme, threaded connection is a wide-ranging detachable fixed connection, has simple structure, connects reliably, installs and removes advantages such as convenient. And the sealing belt is wound at the thread of the pressure sensor, so that the thread gap of threaded connection is reduced, the elastic characteristic of the sealing belt is utilized to fill the thread gap, and the tightness of connection is improved.

As one preferable mode, the insert is integrally formed with the boss.

In this scheme, the integrated injection molding of mold insert and the valve body of taking the boss avoids gas to leak at the clearance that mold insert and valve body are connected.

As one preferable aspect, the three-way valve further includes a third passage for exhaust gas; the sphere center is provided with a second through hole and an exhaust channel for exhausting; the exhaust channel penetrates through the sphere center and can be communicated with the second channel and the third channel; the first through hole and the second through hole are respectively communicated with the exhaust channel.

In the scheme, the axis of the first through hole is positioned on the rotating shaft of the sphere center, wherein the central axis of the first through hole is perpendicular to the central axis of the exhaust channel; the central axis of the second through hole is perpendicular to the plane formed by the central axis of the first through hole and the central axis of the exhaust channel, and passes through the intersection point of the central axis of the first through hole and the central axis of the exhaust channel. The rotation angle of the sphere center is 0-180 degrees, when the sphere center is in a 0-degree state, the relief valve is in a closed state, the central axis of the exhaust channel is perpendicular to the central axis of the second channel, and the second through hole is communicated with the second channel, so that the first through hole is communicated with the second channel, and the pressure sensor can monitor the pressure in the pipe in real time; when the sphere center is at 90 degrees, the diffusion valve is in an open state, the central axis of the exhaust channel is coincident with or parallel to the central axis of the second channel, and the exhaust channel at the moment communicates the second channel with the third channel to discharge residual fuel gas in the pipe; when the sphere center is at 180 degrees, the second through hole faces the third channel, the sealing surface faces the second channel, the second channel is sealed, and replacement and maintenance work of the pressure sensor are facilitated.

As one preferable scheme, an operating rod for controlling the rotation of the sphere center is arranged on the outer wall of the valve body; the first through hole is coaxial with the rotating shaft of the sphere center; the axis of the second through hole is perpendicular to the rotation axis of the sphere center.

In this scheme, sphere center fixedly connected with action bars, the clearance hole has been seted up to the position that valve body lateral wall corresponds with the action bars, and the action bars can pass the clearance hole and stretch out outside the valve body, and the user can rotate the action bars and rotate the operation to the sphere center, and then changes the state of diffusion valve.

As one preferable scheme, the outer end part of the operating rod is sleeved with a rotary working cap which is coaxial with the operating rod.

In this scheme, be equipped with sealing member between working cap and the action bars, improve the leakproofness that action bars and working cap are connected through sealing member, the action bars can be provided the protection to the action bars to the working cap, avoid the action bars to take place to warp and then lead to the unable normal rotation of sphere center. The working cap is thicker, has higher strength and is difficult to deform.

As one preferable scheme, the working cap and the operating rod are both provided with matched limiting structures.

In this scheme, the action bars are cylindrically, and are equipped with perpendicular to sectional plane incision as limit structure along the cross-section of action bars axis direction, and the inner chamber of work cap is equipped with plane incision matched with limit structure. The two limiting structures are matched, so that the operating rod and the working cap can synchronously rotate.

As one preferable scheme, the end part of the working cap is provided with a handle for rotation.

In this scheme, the tip of work cap is equipped with the handle, and the user can rotate the work cap through rotating the handle. The auxiliary tool is not needed to rotate the working cap by additionally arranging the handle, so that the convenience of opening and closing the relief valve is improved.

As a preferred embodiment, the second channel end is provided with a thread structure.

In the scheme, the end part of the second channel is provided with a threaded hole which can be used for connecting other extension parts; because the relief valve is positioned in the well, the rest of the fuel gas in the pipe is directly discharged into the well, which threatens the life and health of staff; the residual fuel gas can be discharged out of the well through the connection pipeline, so that accidents are avoided.

Compared with the prior art, the utility model discloses a bleeding valve, which has the following beneficial effects: a boss for installing a pressure sensor is arranged on the outer side of the valve body, and the boss is communicated with a first channel of the three-way valve; the first through hole of the sphere center is communicated with the first channel, and the first through hole is always communicated with the second channel, so that the pressure sensor can always detect and feed back the pressure in the pipeline. Because the pipeline is buried underground, if the pressure sensor is arranged on the main valve, the signal is difficult to transmit and the maintenance and the replacement of the pressure sensor are inconvenient, and the relief valve of the ventilation part is arranged in the valve well and is not buried, so that the pressure sensor is designed and arranged at the relief small valve, and the signal transmission and the maintenance and the replacement of the pressure sensor are convenient.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model.

FIG. 2 is a schematic view of the present utility model in use.

Fig. 3 is an exploded view of the overall structure of an embodiment of the present utility model.

Fig. 4 is an enlarged view at a.

Fig. 5 is a front view of the present utility model.

FIG. 6 is a cross-sectional view at A-A.

Fig. 7 is a schematic view of the internal structure of the present utility model.

Fig. 8 is an enlarged view at B.

1, a pressure sensor; 2. a three-way valve; 21. a first channel; 22. a second channel; 23. a third channel; 3. a boss; 31. an insert; 4. a center of sphere; 41. a first through hole; 42. a second through hole; 43. an exhaust passage; 5. an operation lever; 6. a working cap; 7. a handle; 8. a thread structure; 9. a well cover; 10. and a main valve.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "long", "short", "top", "bottom", "inside", "outside", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, but rather, it is indicated or implied that the pointed devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limitations of the present patent, and that the specific meaning of the terms described above should be understood by those skilled in the art in view of specific circumstances.

The technical scheme of the utility model is further specifically described by the following specific embodiments with reference to the accompanying drawings:

example 1

As shown in fig. 1, the embodiment provides a relief valve, which comprises a pressure sensor 1 and a three-way valve 2; the three-way valve 2 includes a valve body; the valve body is provided with a sphere center 4, a first channel 21, a second channel 22 for connecting a main pipeline and a third channel 23 for exhausting; the sphere center 4 is used for controlling the communication between the second channel 22 and the third channel 23; the outer wall of the valve body is provided with a boss 3 which is used for assembling the pressure sensor 1 and is communicated with the first channel 21; the center 4 is provided with a first through hole 41 communicating the first passage 23 and the second through hole 22.

The bleed valve is used for carrying out operation after the residual fuel gas in the pipe is required to be exhausted in pipeline maintenance; the relief valve is connected with the two sides of the ball valve on the main gas conveying pipeline along the conveying direction, when gas leakage occurs at the ball valve, the pressure in the pipe can fluctuate, and the pressure sensor 1 communicated with the relief valve can feed back pressure change in real time at the moment, so that workers are reminded of timely overhauling. A boss 3 for installing the pressure sensor 1 is arranged on the outer side of the valve body, and the boss 3 is communicated with a first channel 21 of the three-way valve 2; the first through hole 41 of the ball center 4 is communicated with the first channel 21, and the first through hole 41 is always communicated with the second channel 22, so that the pressure sensor 1 can always detect and feed back the pressure in the pipeline. Because the pipeline is buried under the ground, if the pressure sensor 1 is installed on the main valve 10, the signal is difficult to transmit and the maintenance and the replacement of the pressure sensor 1 are inconvenient, and the relief valve of the ventilation part is positioned in the valve well and is not buried, so the pressure sensor 1 is designed and installed at the relief small valve, and the signal transmission and the maintenance and the replacement of the pressure sensor 1 are convenient.

Specifically, the center 4 is provided with a second through hole 42 and an exhaust passage 43 for exhaust; the exhaust passage 43 penetrates through the sphere center 4 to communicate the second passage 22 and the third passage 23; the first through hole 41, the second through hole 42 are communicated with the exhaust passage 43, and the central axis of the second through hole 42 is perpendicular to the exhaust passage 43.

The axis of the first through hole 41 is located on the rotation axis of the sphere center 4, wherein the central axis of the first through hole 41 is perpendicular to the central axis of the exhaust channel 43; the central axis of the second through hole 42 is perpendicular to a plane formed by the central axis of the first through hole 41 and the central axis of the exhaust passage 43, and passes through the intersection of the central axis of the first through hole 41 and the central axis of the exhaust passage 43. The rotation angle of the ball center 4 is 0-180 degrees, when the ball center 4 is in a 0-degree state, the relief valve is in a closed state, the central axis of the exhaust channel 43 is perpendicular to the central axis of the second channel 22, and the second through hole 42 is communicated with the second channel 22, so that the first through hole 41 is communicated with the second channel 22, and the pressure sensor 1 can monitor the pressure in the pipe in real time; when the sphere center 4 is at 90 degrees, the diffusion valve is in an open state, the central axis of the exhaust channel 43 coincides with or is parallel to the central axis of the second channel 22, and the exhaust channel 43 at the moment communicates the second channel 22 with the third channel 23 to discharge residual fuel gas in the pipe; when the sphere center 4 is at 180 degrees, the second through hole 42 faces the third channel 23, the sealing surface faces the second channel 22, and the second channel 22 is closed, so that replacement and maintenance work of the pressure sensor 1 are facilitated.

Further, the end of the second channel 22 is provided with a screw thread structure 8. The end of the second channel 22 is provided with a threaded hole which can be used for connecting other extension parts; because the relief valve is positioned in the well, the rest of the fuel gas in the pipe is directly discharged into the well, which threatens the life and health of staff; the residual fuel gas can be discharged out of the well through the connection pipeline, so that accidents are avoided.

The relief valve is arranged at a position near the main valve 10 of the main gas pipeline through a pipeline, when gas leakage occurs in a region near the main valve 10 in the pipe, the pressure fluctuation in the pipe can be caused, and the pressure sensor 1 can timely feed back the pressure fluctuation to remind workers; the second channel 22 is always in communication with the first channel 21 through the centre of sphere 4, enabling the pressure sensor 1 to always detect the pressure inside the tube.

Example 2

The embodiment provides a relief valve, which comprises a pressure sensor 1 and a three-way valve 2; the three-way valve 2 includes a valve body; the valve body is provided with a sphere center 4, a first channel 21, a second channel 22 for connecting a main pipeline and a third channel 23 for exhausting; the sphere center 4 is used for controlling the communication between the second channel 22 and the third channel 23; the outer wall of the valve body is provided with a boss 3 which is used for assembling the pressure sensor 1 and is communicated with the first channel 21; the center 4 is provided with a first through hole 41 communicating the first passage 23 and the second through hole 22.

Still further, the boss 3 is provided with an insert 31 for connecting the pressure sensor 1; the stainless steel joint insert 31 is arranged in the boss 3, the pressure sensor 1 can be conveniently installed on the insert 31, the outer diameter of the insert 31 is matched with the inner diameter of the boss 3, and the sealing performance between the insert 31 and the valve body can be enhanced. Before the pressure sensor 1 is installed, the sealing tape is wound outside the pressure sensor 1 and then matched with the insert 31, so that the overall tightness is further improved, and leakage of fuel gas is avoided.

Specifically, the pressure sensor 1 is screwed with the insert 31; the pressure sensor 1 is provided with external threads; the inner wall of the insert 31 is provided with an internal thread which is matched with the external thread of the pressure sensor 1. The threaded connection is a widely used detachable fixed connection and has the advantages of simple structure, reliable connection, convenient assembly and disassembly and the like. The sealing band is wound at the thread of the pressure sensor 1, so that the thread gap of threaded connection is reduced, the elastic characteristic of the sealing band is utilized to fill the thread gap, and the tightness of connection is improved.

More specifically, the insert 31 is integrally formed with the boss 3; the insert 31 and the valve body with the boss 3 are integrally injection molded, so that gas leakage in a gap between the insert 31 and the valve body is avoided, and the sealing problem of the connection of the insert 31 and the valve body is effectively solved.

Example 3

The embodiment provides a relief valve, and in the embodiment, on the basis of embodiment 1 or embodiment 2, an operating rod 5 for controlling the rotation of a ball center 4 is arranged on the outer wall of a valve body; the first through hole 41 is coaxial with the rotation axis of the center 4; the axis of the second through hole 42 is perpendicular to the rotation axis of the center of sphere 4. The ball center 4 is fixedly connected with an operating rod 5, a clearance hole is formed in the position, corresponding to the operating rod 5, of the side wall of the valve body, the operating rod 5 can penetrate through the clearance hole and extend out of the valve body, a user can rotate the operating rod 5 to rotate the ball center 4, and then the state of the diffusion valve is changed.

Further, the operating rod 5 is sleeved with a rotary working cap 6 coaxial with the operating rod 5. Be equipped with the sealing member between work cap 6 and the action bars 5, improve the leakproofness that action bars 5 and work cap 6 are connected through the sealing member, the action bars 5 can be provided with the protection to the action caps 6, avoid action bars 5 to take place to warp and then lead to the unable normal rotation of sphere center 4. The working cap 6 is thicker, has higher strength and is difficult to deform.

Specifically, the working cap 6 and the operating rod 5 are provided with matched limiting structures. The operating rod 5 is cylindrical, a plane incision perpendicular to the cross section is arranged on the cross section along the axis direction of the operating rod to serve as a limiting structure, and a limiting structure matched with the plane incision is arranged in the inner cavity of the working cap 6. The two limit structures are matched, so that the operating rod 5 and the working cap 6 can synchronously rotate.

Further, the end of the working cap 6 is provided with a handle 7 for rotation. The end of the working cap 6 is provided with a handle 7, and a user can rotate the working cap 6 by rotating the handle 7. The auxiliary tool is not needed to rotate the working cap 6 by additionally arranging the handle 7, so that the convenience of opening and closing the relief valve is improved.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. A relief valve, characterized in that: comprises a pressure sensor (1) and a three-way valve (2);

the three-way valve (2) comprises a valve body; a ball center (4), a first channel (21) and a second channel (22) for connecting with a main pipeline are arranged in the valve body;

the outer wall of the valve body is provided with a boss (3) which is provided with the pressure sensor (1) and is communicated with the first channel (21);

the sphere center (4) is provided with a first through hole (41) communicated with the first channel (21) and the second channel (22).

2. The bleed valve of claim 1, wherein: the boss (3) is provided with an insert (31) for connecting the pressure sensor (1).

3. The bleed valve of claim 2, wherein: the pressure sensor (1) is in threaded connection with the insert (31); the pressure sensor (1) is provided with external threads; the inner wall of the insert (31) is provided with internal threads matched with the external threads of the pressure sensor (1).

4. The bleed valve of claim 2, wherein: the insert (31) and the boss (3) are integrally formed.

5. The bleed valve of claim 1, wherein: the three-way valve (2) further comprises a third channel (23) for exhausting, and the ball center (4) is provided with a second through hole (42) and an exhaust channel (43) for exhausting; the exhaust channel (43) penetrates through the sphere center (4) and can be communicated with the second channel (22) and the third channel (23); the first through hole (41) and the second through hole (42) are respectively communicated with the exhaust passage (43).

6. The bleed valve of claim 5, wherein: an operating rod (5) for controlling the rotation of the sphere center (4) is arranged on the outer wall of the valve body;

the first through hole (41) is coaxial with the rotation axis of the sphere center (4); the axis of the second through hole (42) is perpendicular to the rotation axis of the sphere center (4).

7. The bleed valve of claim 6, wherein: the outer end part of the operating rod (5) is sleeved with a rotary working cap (6) coaxial with the operating rod (5).

8. The bleed valve of claim 7, wherein: the working cap (6) and the operating rod (5) are both provided with matched limiting structures.

9. The bleed valve of claim 7, wherein: the end part of the working cap (6) is provided with a handle (7) for rotating.

10. The bleed valve of claim 1, wherein: the end part of the second channel (22) is provided with a thread structure (8).