CN217381780U

CN217381780U - Gas pipeline bleeding valve

Info

Publication number: CN217381780U
Application number: CN202220856491.XU
Authority: CN
Inventors: 陈镜兔; 贝正海; 孟海峰; 钱灿荣; 王雅芳
Original assignee: Zhejiang Chunhui Intelligent Control Co Ltd
Current assignee: Zhejiang Chunhui Intelligent Control Co Ltd
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-09-06
Anticipated expiration: 2032-04-14

Abstract

The utility model discloses a gas pipeline relief valve, which relates to the technical field of gas transmission and distribution and comprises a valve body, a valve cover, a diaphragm, a bearing disc, a gland and a spring, wherein the valve body and the valve cover are covered to form a valve cavity, and the diaphragm is clamped between the valve body and a cover body and separates the valve cavity; the bottom of the valve body protrudes towards the diaphragm to form a closed supporting cylinder, one inward end of the supporting cylinder is provided with a valve port convex ring, the valve port convex ring is used for abutting against and sealing with the diaphragm, a through hole is formed in the inner side of the abutting position of the diaphragm and the valve port convex ring, the valve body and the valve cover are respectively provided with an air inlet and an air outlet which are used for communicating the valve cavity, one side of the diaphragm, which is back to the supporting cylinder, is provided with a bearing disc, a gland and a spring, the bearing disc is overlapped with the diaphragm, the spring elastically abuts against and presses between the gland and the bearing disc, and the position of the gland can be adjusted. The utility model discloses the safety and stability, the convenience is adjusted the valve of diffusing, does benefit to the operation of diffusion system safety and stability.

Description

Gas pipeline bleeding valve

Technical Field

The utility model relates to a gas transmission and distribution technical field, more specifically say, it relates to a gas pipeline valve of bleeding.

Background

At the transmission and distribution in-process of pipeline gas, need install the diffusing device on pipeline, when the gas pressure of user's of low reaches was too high, can carry out the pressure release through the diffusing device, diffuses partial gas to safe environment in the middle of, can maintain the stability of gas pressure in the middle of the gas pipeline, control in the middle of the scope of safety, improved gas conveying system's security.

In the fuel gas bleeding system, a bleeding valve is the most key, and directly determines and controls whether fuel gas is bled or not, and the bleeding valve needs to be adjusted and controlled according to different fuel gas conveying requirements and different pressure conditions for fuel gas bleeding; however, the existing bleeding valve is inconvenient to use and inconvenient to adjust, and the adjustment and control of a bleeding system are influenced.

Therefore, a new solution is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve above-mentioned problem and provide a gas pipeline valve of diffusing, the safety and stability is conveniently adjusted the valve of diffusing, does benefit to the operation of system safety and stability of diffusing.

The above technical object of the present invention can be achieved by the following technical solutions: a gas pipeline relief valve comprises a valve body, a valve cover, a diaphragm, a bearing disc, a gland and a spring, wherein the valve body and the valve cover are covered to form a valve cavity, and the diaphragm is clamped between the valve body and a cover body and separates the valve cavity; the bottom of the valve body protrudes towards the diaphragm to form a closed supporting cylinder, a valve port convex ring is arranged at one inward end of the supporting cylinder and used for being in abutting seal with the diaphragm, through holes are formed in the inner sides of abutting positions of the diaphragm and the valve port convex ring, an air inlet and an air outlet which are used for communicating a valve cavity are formed in the valve body and the valve cover respectively, a bearing disc, a pressing cover and a spring are arranged on one side, back to the supporting cylinder, of the diaphragm, the bearing disc is overlapped with the diaphragm, the spring elastically abuts between the pressing cover and the bearing disc, and the position of the pressing cover can be adjusted.

The utility model is further arranged in that the middle of the supporting cylinder is fixedly connected with an adjusting cylinder, and a guide rod which can be adjusted in a sliding way is arranged in the adjusting cylinder and is sealed in a sliding way through a sealing ring; one end of the guide rod penetrates through the diaphragm and the pressure bearing disc and is fixed with the gland, the other end of the guide rod extends out of the valve cavity, and is in threaded connection with an adjusting nut which is used for abutting against and limiting the outer end of the adjusting cylinder.

The utility model is further arranged in that a sealing ring is arranged on the inner periphery of the adjusting cylinder, and the guide rod passes through the sealing ring to realize sealing; and one end of the guide rod, which faces away from the gland, is provided with an external thread, and the adjusting nut is in threaded connection with the external thread of the guide rod.

The utility model discloses further set up to, be connected fixedly through the fastener between valve body and the valve gap, the outer border of diaphragm supports to press between the flange of both sides.

The utility model discloses further set up to, set up a plurality of flow channel holes two on the gland, the load dish sets up spacing bulge loop one and spacing bulge loop two respectively with one side that the gland is relative, the both ends of spring are respectively through spacing bulge loop one and spacing bulge loop two spacing.

The utility model discloses further set up to, a plurality of flow channel holes one have been seted up to the through-hole inboard that corresponds to the diaphragm on the load dish.

The utility model is further arranged that the first flow passage holes are distributed in a ring shape, a guide hole for the guide rod to pass through is arranged between the first flow passage holes,

the utility model discloses further set up to, the load set up on with the diaphragm on the boss of through-hole adaptation, the boss embedding in the through-hole, the periphery of boss sets up the annular that is used for the diaphragm embedding.

The utility model discloses further set up to, the outline of load dish is less than the diaphragm, and load dish periphery sets up the arc towards one side of diaphragm and supports the pressure face, the arc supports the pressure face and is used for supporting with diaphragm elasticity and presses.

The utility model discloses further set up to, on the periphery of valve body was located to the air inlet, the one end of valve gap dorsad valve body was located to the gas outlet, air inlet and gas outlet mutually perpendicular.

To sum up, the utility model discloses following beneficial effect has:

by adopting the guidable rod and the adjusting nut, the initial compression state of the spring can be adjusted, so that the pressure stability of the spring is maintained, the diffusing pressure value of the diffusing valve can be adjusted, the diffusing system can be conveniently adjusted, and the applicability of the diffusing system is improved; through installing guide bar and adjusting nut in the outside of bleeding the valve, can directly adjust in the outside position of bleeding the valve, further make things convenient for the use of bleeding the valve.

Drawings

FIG. 1 is a schematic structural view of a gas pipeline bleeding valve of the present invention;

fig. 2 is a schematic structural view of the gland of the present invention;

fig. 3 is a schematic structural view of the force bearing disc of the present invention;

fig. 4 is a schematic view of the connection structure between the bearing disc and the diaphragm of the present invention.

Reference numerals are as follows: 1. a valve body; 11. an air inlet; 12. a support cylinder; 13. a valve port convex ring; 14. an adjusting cylinder; 15. a seal ring; 2. a valve cover; 21. an air outlet; 3. a fastener; 31. a flange; 4. a membrane; 41. a through hole; 42. an outer edge; 5. a force bearing disc; 51. a first flow passage hole; 52. a guide hole; 53. a first limiting convex ring; 54. a boss; 55. a ring groove; 56. an arc-shaped abutting surface; 6. a gland; 61. a second flow passage hole; 62. a second limiting convex ring; 7. a spring; 8. a guide bar; 81. an external thread; 82. and adjusting the nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a gas pipeline bleeding valve is installed in a gas bleeding system, and when the gas pressure in the bleeding system is greater than a preset value, the pressure-driven bleeding valve is automatically opened to achieve the bleeding of the gas.

The relief valve comprises a valve body 1, a valve cover 2, a diaphragm 4, a force bearing disc 5, a gland 6 and a spring 7, wherein the valve body 1 and the valve cover 2 are covered to form a valve cavity, flanges 31 are arranged on the peripheries of the connection of the valve body 1 and the valve cover 2, the valve body 1 and the valve cover 2 are connected through threaded fasteners 3 and sealed through sealing elements;

the diaphragm 4 is a circular flexible sheet, is clamped between the valve body 1 and the cover body, and divides the valve cavity into an output side cavity and an input side cavity. An air inlet 11 and an air outlet 21 are respectively arranged on the valve body 1 and the valve cover 2, and the on-off switching of the valve cavity can be switched by the elastic floating of the diaphragm 4.

Specifically, on air inlet 11 located the periphery of valve body 1, and valve gap 2 one end of valve body 1 dorsad is located to gas outlet 21, can set up the hookup location who admits air and give vent to anger in two directions, according to the installation, can be the mutually perpendicular's state with air inlet 11 and gas outlet 21 setting to can conveniently connect the assembly to the pipeline of gas diffusion system more, also do benefit to the use in later stage.

When the diaphragm 4 is installed, the outer edge 42 of the diaphragm 4 is clamped between the valve body 1 and the flanges 31 on two sides of the cover body, and the threaded fastener 3 penetrates through the hole of the outer edge 42, so that the diaphragm 4 can be more stably clamped, and the stability of the diaphragm 4 in the working state is kept.

The bottom of the valve body 1 protrudes towards the diaphragm 4 to form a closed supporting cylinder 12, a valve port convex ring 13 is arranged at the inward end of the supporting cylinder 12, the valve port convex ring 13 corresponds to a through hole 41 on the diaphragm 4, and the through hole 41 is positioned at the inner side of the valve port convex ring 13. After the diaphragm 4 is elastically deformed towards the direction of the valve port convex ring 13, the diaphragm 4 is abutted against the valve port convex ring 13, and an abutting sealing state is formed between the diaphragm 4 and the valve port convex ring 13, so that the air inlet 11 and the air outlet 21 at two ends of the valve cavity are cut off; after the diaphragm 4 is elastically deformed back to the direction away from the valve port convex ring 13, a separation is formed between the diaphragm 4 and the valve port convex ring 13, and gas on two sides of the valve cavity can flow through the through hole 41 in the middle of the diaphragm 4, so that the gas inlet 11 and the gas outlet 21 at two ends of the valve cavity can be communicated, and the gas can be diffused.

A bearing disc 5, a gland 6 and a spring 7 are arranged on one side of the diaphragm 4, which is opposite to the support cylinder 12, wherein the bearing disc 5 and the diaphragm 4 are overlapped, the bearing disc 5 and the diaphragm 4 are tightly attached to each other and keep tight connection, and synchronous lifting and floating can be kept at the connection position; the gland 6 is positioned on one side of the bearing disc 5 far away from the diaphragm 4, and plays a role in supporting the spring 7; the spring 7 is elastically pressed between the gland 6 and the bearing disc 5, and a pressure can be generated on the diaphragm 4 through the elasticity of the spring 7, so that the diaphragm 4 and the valve port convex ring 13 are mutually pressed, and the sealing between the valve port convex ring 13 and the diaphragm 4 is maintained.

The middle position of the bearing disc 5 is provided with a boss 54 matched with the through hole 41 on the membrane 4, the boss 54 protrudes towards the direction of the membrane 4 and can be embedded into the through hole 41 of the membrane 4, and the periphery of the boss 54 is provided with a ring groove 55, so that during assembly, the inner periphery of the through hole 41 of the membrane 4 can be embedded into the ring groove 55 of the boss 54, the firmness and the stability of the connection part of the membrane 4 and the bearing disc 5 are maintained, and the two can be synchronously lifted;

the outer contour of the bearing disc 5 is smaller than the diaphragm 4, so that the diaphragm 4 at the outer peripheral position of the bearing disc 5 is in a free elastic floating state, the outer periphery of the bearing disc is processed towards one side of the diaphragm 4 to form an arc-shaped abutting surface 56, the arc-shaped abutting surface 56 can elastically abut against the diaphragm 4, the abutting positions of the arc-shaped abutting surface and the diaphragm 4 can be in a relatively smooth transition state, and the elastic deformation of the diaphragm 4 is facilitated.

The bearing disc can play a role in assisting stress in the elastic floating process of the diaphragm 4, a plurality of first flow passage holes 51 are formed in the bearing disc 5 corresponding to the inner side of the through hole 41 of the diaphragm 4, and the first flow passage holes 51 are distributed annularly and can be used for gas to circulate; the gland 6 is provided with a plurality of second flow passage holes 61, so that gas can smoothly flow from the valve cavity.

In order to keep the stability of the spring 7, a first limiting convex ring 53 and a second limiting convex ring 62 are respectively arranged on one side, opposite to the gland 6, of the bearing disc 5, two ends of the spring 7 are respectively embedded into the first limiting convex ring 53 and the second limiting convex ring 62, the position of the spring 7 can be limited and fixed, therefore, the spring 7 can always keep a stable state in the elastic expansion process, and the reliability of on-off switching of the bleeding valve is improved.

In the process of gas delivery, the valve cavity on one side of the gas inlet 11 is communicated with the gas pipeline, when the pressure in the gas pipeline is normal, the pressure of the spring 7 on two sides of the diaphragm 4 is larger than the pressure in the gas pipeline, and under the elastic action of the spring 7, the abutting seal between the diaphragm 4 and the valve port convex ring 13 is maintained, so that the normally closed state of the diffusion valve is maintained. When pressure in the middle of the gas pipeline is higher than the preset value, the pressure of gas will push the membrane 4 to float, the pressure of the spring 7 will fail to maintain the sealing state of the membrane 4, the membrane 4 and the valve port convex ring 13 are opened, gas flows out, and automatic diffusion of gas is realized.

The position height of the gland 6 can be adjusted, so that the initial compression degree of the spring 7 is adjusted, the abutting sealing pressure between the diaphragm 4 and the valve port convex ring 13 is adjusted, and the automatic open gas pressure releasing condition of the releasing valve is adjusted.

The gland 6 is adjusted through the guide rod 8 and the adjusting bolt, specifically, the middle of the support cylinder 12 is fixedly connected with an adjusting cylinder 14, and the guide rod 8 is installed in the adjusting cylinder 14 and can be adjusted in an axial sliding manner along the adjusting cylinder 14; the guide rod 8 runs through the adjusting cylinder 14, one end of the guide rod penetrates through the membrane 4 and the pressure bearing disc and is fixed with the gland, the other end of the guide rod extends out of the valve cavity, the adjusting nut 82 is connected with the threads, the adjusting nut 82 can abut against the outer end of the adjusting cylinder 14 to be pressed to be limited, the adjusting nut 82 is screwed through the threads, the guide rod 8 can be adjusted in the extending mode, the compression condition of the spring 7 can be adjusted, and then the automatic open gas pressure condition of the diffusion valve is adjusted.

A guide hole 52 is formed in the center of the pressure bearing disc and corresponds to the position between the first runner holes 51; the guide rod 8 can pass through the guide hole to form an axial telescopic adjustment state, and can also assist the guide rod 8 in a certain degree to keep the stability of the adjustment process of the guide rod 8.

The sealing ring 15 is arranged on the inner periphery of the adjusting cylinder 14, the guide rod 8 penetrates through the inner hole of the sealing ring 15 to realize sealing, and the guide rod 8 can stably abut against the inner periphery of the sealing ring 15 in the sliding adjusting process, so that a sealing structure capable of being adjusted in a sliding mode is formed.

An external thread 81 is formed at one end of the guide rod 8, which is opposite to the gland 6, and the adjusting nut 82 is in threaded connection with the external thread 81 of the guide rod 8, so that the adjusting nut 82 is installed; and the length of external screw thread 81 is moderate, and in the slide adjusting process of guide bar 8, the position of external screw thread 81 is not overlapped with sealing washer 15 position all the time, avoids producing the condition of revealing.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A gas pipeline relief valve comprises a valve body (1), a valve cover (2), a diaphragm (4), a bearing disc (5), a gland (6) and a spring (7), wherein the valve body (1) and the valve cover (2) are covered to form a valve cavity, and the diaphragm (4) is clamped between the valve body (1) and a cover body and separates the valve cavity; the valve is characterized in that the bottom of the valve body (1) protrudes towards the diaphragm (4) to form a closed supporting cylinder (12), one inward end of the supporting cylinder (12) is provided with a valve port convex ring (13), the valve port convex ring (13) is used for abutting against and sealing with the diaphragm (4), the inner sides of the abutting positions of the diaphragm (4) and the valve port convex ring (13) are provided with through holes (41), the valve body (1) and the valve cover (2) are respectively provided with an air inlet (11) and an air outlet (21) which are used for communicating a valve cavity, one side of the diaphragm (4) opposite to the supporting cylinder (12) is provided with a bearing disc (5), a gland (6) and a spring (7), the bearing disc (5) is overlapped with the diaphragm (4), the spring (7) elastically abuts against between the gland (6) and the bearing disc (5), and the position of the gland (6) is adjustable.

2. The gas pipeline bleeding valve as defined in claim 1, wherein an adjusting cylinder (14) is fixedly connected to the supporting cylinder (12), and a slidably adjustable guide rod (8) is arranged in the adjusting cylinder (14) and is slidably sealed by a sealing ring (15); one end of the guide rod (8) penetrates through the diaphragm (4) and the pressure bearing disc and is fixed with the gland, the other end of the guide rod extends out of the valve cavity, the valve cavity is connected with an adjusting nut (82) in a threaded mode, and the adjusting nut (82) is used for abutting against the outer end of the adjusting cylinder (14) for limiting.

3. A gas line bleeding valve as claimed in claim 2, characterised in that the inner periphery of the regulating cylinder (14) is fitted with a sealing ring (15), the guide rod (8) passing through the sealing ring (15) to effect the sealing; one end of the guide rod (8) back to the gland (6) is provided with an external thread (81), and the adjusting nut (82) is in threaded connection with the external thread (81) of the guide rod (8).

4. The gas pipeline bleeding valve as defined in claim 1, wherein the valve body (1) and the valve cover (2) are fixedly connected by a fastener (3), and the outer edge (42) of the diaphragm (4) is pressed between the flanges (31) at both sides.

5. The gas pipeline relief valve according to claim 1, wherein the gland (6) is provided with a plurality of second flow passage holes (61), one side of the bearing disc (5) opposite to the gland (6) is provided with a first limiting convex ring (53) and a second limiting convex ring (62), and two ends of the spring (7) are limited by the first limiting convex ring (53) and the second limiting convex ring (62).

6. The gas pipeline bleeding valve as defined in claim 1, wherein a plurality of first flow passage holes (51) are formed in the bearing disc corresponding to the inner side of the through hole (41) of the diaphragm (4).

7. The gas pipeline bleeding valve as claimed in claim 6, wherein the first flow passage holes (51) are annularly distributed, and a guide hole (52) through which the guide rod (8) passes is formed between the first flow passage holes (51).

8. The gas pipeline relief valve according to claim 1, wherein the bearing disc (5) is provided with a boss (54) matched with the through hole (41) on the diaphragm (4), the boss (54) is embedded in the through hole (41), and the periphery of the boss (54) is provided with a ring groove (55) for embedding the diaphragm (4).

9. The gas pipeline bleeding valve according to claim 1, wherein the outer contour of the force bearing disc (5) is smaller than that of the diaphragm (4), an arc-shaped abutting surface (56) is arranged on one side of the outer periphery of the force bearing disc, which faces the diaphragm (4), and the arc-shaped abutting surface (56) is used for elastically abutting against the diaphragm (4).

10. The gas pipeline bleeding valve as defined in claim 1, wherein the gas inlet (11) is provided on the outer periphery of the valve body (1), the gas outlet (21) is provided at an end of the valve cover (2) facing away from the valve body (1), and the gas inlet (11) and the gas outlet (21) are perpendicular to each other.