CN217003252U - Pipeline gas self-closing valve - Google Patents
Pipeline gas self-closing valve Download PDFInfo
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- CN217003252U CN217003252U CN202220713684.XU CN202220713684U CN217003252U CN 217003252 U CN217003252 U CN 217003252U CN 202220713684 U CN202220713684 U CN 202220713684U CN 217003252 U CN217003252 U CN 217003252U
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- closing valve
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- pressure relief
- seat
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Abstract
The utility model discloses a pipeline gas self-closing valve which comprises a self-closing valve body, wherein a pressure relief seat is fixedly installed at the bottom of the self-closing valve body, a pressure relief cavity is formed in the pressure relief seat, a communicating pipe is fixedly installed at the top of the pressure relief seat, the top end of the communicating pipe extends into the self-closing valve body, the bottom end of the communicating pipe extends into the pressure relief cavity, a movable seat is installed in the pressure relief cavity in a sliding mode, the outer side wall of the movable seat is in sliding sealing contact with the inner side wall of the pressure relief cavity, and two stop levers are fixedly installed on the inner wall of the top of the pressure relief cavity. The self-closing valve body pressure relief device is reasonable in design and good in practicability, can automatically perform effective pressure relief protection on the interior of the self-closing valve body, avoids the self-closing valve body or a gas pipeline from being damaged due to large pressure, improves the safety performance of the self-closing valve body in use, and can adjust the range of the gas pressure value borne by the self-closing valve body in pressure relief according to use requirements.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a pipeline gas self-closing valve.
Background
The pipeline gas self-closing valve is a valve which is arranged on a pipeline of a low-pressure gas system, can be automatically closed and needs to be manually opened without electricity or other external power when the gas supply pressure of the pipeline is under-pressure, overpressure or gas cut-off, and is increased along with the gradual increase of the use of civil gas pipelines nowadays.
However, a common pipeline gas self-closing valve usually does not have the function of automatic pressure relief protection, when the gas pressure value in a gas pipeline is too large, the pipeline gas self-closing valve can be automatically closed, however, gas with too high pressure is still sealed in the gas inlet end of the pipeline gas self-closing valve and the gas pipeline, so that the pipeline gas self-closing valve or the gas pipeline is easily damaged due to large pressure, the safety performance of the pipeline gas self-closing valve during use is reduced, and potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides a pipeline gas self-closing valve, which solves the problems that the pipeline gas self-closing valve does not have the function of automatic pressure relief protection, when the pressure value of gas in a gas pipeline is overlarge, the gas with overhigh pressure is still sealed in the gas inlet end of the pipeline gas self-closing valve and the gas pipeline, so that the pipeline gas self-closing valve or the gas pipeline is easily damaged due to high pressure, the safety performance of the pipeline gas self-closing valve in use is reduced, and potential safety hazards exist.
(II) technical scheme
In order to achieve the purpose, the utility model provides the following technical scheme: the pipeline gas self-closing valve comprises a self-closing valve body, wherein a pressure relief seat is fixedly installed at the bottom of the self-closing valve body, a pressure relief cavity is formed in the pressure relief seat, a communicating pipe is fixedly installed at the top of the pressure relief seat, the top end of the communicating pipe extends into the self-closing valve body, the bottom end of the communicating pipe extends into the pressure relief cavity, a movable seat is installed in the pressure relief cavity in a sliding mode, the outer side wall of the movable seat is in sliding sealing contact with the inner side wall of the pressure relief cavity, two stop levers are fixedly installed on the inner wall of the top of the pressure relief cavity, and the bottom ends of the two stop levers are both in contact with the top of the movable seat;
the pressure relief seat is characterized in that two air relief branch pipes are fixedly mounted on the outer wall of the right side of the pressure relief seat, the two air relief branch pipes are communicated with the inside of the pressure relief cavity, one-way valves are fixedly mounted in the two air relief branch pipes, the right ends of the two air relief branch pipes are fixedly connected with the same air relief main pipe, and a pressure relief mechanism is arranged on the pressure relief seat.
Preferably, the last fixed cover of gassing house steward is equipped with the pipe strap, pipe strap and the right side outer wall fixed connection of pressure release seat.
Preferably, the pressure relief mechanism comprises a sliding rod, a connecting plate, a spring and a positioning assembly, a sliding groove is formed in the bottom of the movable seat, the sliding rod is slidably mounted in the sliding groove, the bottom end of the sliding rod extends out of the sliding groove, the connecting plate is fixedly mounted at the bottom end of the sliding rod, the top end of the spring is fixedly connected with the bottom of the movable seat, the bottom end of the spring is fixedly connected with the top of the connecting plate, and the spring sleeve is arranged on the sliding rod.
Preferably, the inner walls of the two sides of the sliding groove are provided with limiting grooves, the two sides of the sliding rod are fixedly provided with limiting rods, and the two limiting rods are respectively slidably mounted in the corresponding limiting grooves.
Preferably, the inner wall of the bottom of the pressure relief cavity is fixedly provided with two vertical guide rods, and the connecting plate is sleeved on the two vertical guide rods in a sliding manner.
Preferably, the locating component includes the lead screw, handle and positioning bolt, first screw hole has been seted up on the bottom inner wall in pressure release chamber, the lead screw thread is installed in first screw hole, the both ends of lead screw all extend to outside the first screw hole, the top of lead screw contacts with the bottom of connecting plate, handle fixed mounting is in the bottom of lead screw, the second screw hole has been seted up at the top of handle, the positioning bolt thread is installed in the second screw hole, positioning bolt's both ends all extend to outside the second screw hole, a plurality of constant head tanks have been seted up to the bottom of pressure release seat, a plurality of constant head tanks use the lead screw to be equidistant annular as the center and arrange, positioning bolt's top extends to in the corresponding constant head tank.
Preferably, the left side fixed mounting of connecting plate has the pointer, has seted up the bar hole on the left side inner wall in pressure release chamber, and the left end of pointer runs through the bar hole, and fixed mounting has the scale that is located bar hole rear on the left side outer wall of pressure release seat.
(III) advantageous effects
The utility model provides a pipeline gas self-closing valve. The method has the following beneficial effects:
(1) this pipeline gas self-closing valve through installing the in-process that uses on gas pipeline with the self-closing valve body, when the gas pressure value in the gas pipeline was in normal pressure range, the self-closing valve body normally worked, and the movable seat carries out the shutoff to the one end of two gassing branch pipes this moment.
(2) The pipeline gas self-closing valve has the advantages that when the gas pressure in the gas pipeline is abnormal and high pressure occurs, the self-closing valve body can be automatically closed in an action mode, high-pressure gas enters the pressure release cavity through the communicating pipe and can push the movable seat to vertically move downwards, the spring is gradually compressed and deformed, the movable seat gradually removes the blockage of the gas release branch pipe at the upper position in the moving downwards process, the gas can be discharged from the gas release main pipe through the gas release branch pipe at the upper position and then automatically releases the pressure in the self-closing valve body, when the gas pressure is overlarge, the stroke for pushing the movable seat to move downwards is longer, the blockage of the gas release branch pipe at the lower position is also gradually removed, the gas can be discharged through the two gas release branch pipes and the gas release main pipe in sequence, the rapid pressure release in the self-closing valve body can be further, and the effective pressure release protection effect on the interior of the self-closing valve body can be further realized automatically, the self-closing valve body or the gas pipeline is prevented from being damaged due to high pressure, and the safety performance of the self-closing valve body in use is improved.
(3) The pipeline gas self-closing valve can control the lead screw to rotate and move downwards by screwing the positioning bolt out of the corresponding positioning groove and rotating the handle anticlockwise, the connecting plate and the pointer can be pushed to vertically move downwards under the action of the elastic force of the spring, the extension size of the spring is gradually increased at the moment, the lead screw can be controlled to rotate and move upwards by rotating the handle clockwise, the lead screw pushes the connecting plate and the pointer to vertically move upwards, the spring is gradually compressed, the extension size of the spring is gradually reduced to adjust the length size of the spring to a proper position, the positioning bolt is screwed in the corresponding positioning groove to limit the rotation of the handle and the lead screw, further, when the extension size of the spring is increased and adjusted, the gas pressure value born by the self-closing valve body during pressure relief can be reduced, when the extension size of the spring is reduced and adjusted, the gas pressure value that bears when can increase self-closing valve body pressure release, and then can adjust the gas pressure value scope that bears when can be according to the user's needs to self-closing valve body pressure release, improved practicality.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the present invention in partial cross-section;
FIG. 3 is an enlarged view of portion A of FIG. 2;
fig. 4 is an enlarged schematic view of a portion B in fig. 3.
In the figure: 1. a self-closing valve body; 2. a pressure relief seat; 3. a pressure relief cavity; 4. a communicating pipe; 5. a movable seat; 6. a stop lever; 7. a gas discharge branch pipe; 8. a main air bleed conduit; 9. a chute; 10. a slide bar; 11. a connecting plate; 12. a spring; 13. a first threaded hole; 14. a screw rod; 15. a handle; 16. a second threaded hole; 17. positioning the bolt; 18. positioning a groove; 19. a vertical guide rod; 20. a pointer; 21. a graduated scale.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, are not to be construed as limiting the present invention, and in the description of the present invention, "plurality" means two or more unless specifically defined otherwise.
As shown in fig. 1 to 4, the present invention provides a technical solution: the pipeline gas self-closing valve comprises a self-closing valve body 1, wherein a pressure relief seat 2 is fixedly installed at the bottom of the self-closing valve body 1, the pressure relief seat 2 is located at the position, close to an air inlet end, of the bottom of the self-closing valve body 1, a pressure relief cavity 3 is formed in the pressure relief seat 2, a communicating pipe 4 is fixedly installed at the top of the pressure relief seat 2, the top end of the communicating pipe 4 extends into the self-closing valve body 1, the communicating pipe 4 is communicated with the inner space of the air inlet end of the self-closing valve body 1, the bottom end of the communicating pipe 4 extends into the pressure relief cavity 3, a movable seat 5 is slidably installed in the pressure relief cavity 3, the outer side wall of the movable seat 5 is in sliding sealing contact with the inner side wall of the pressure relief cavity 3, two stop rods 6 are fixedly installed on the inner wall of the top of the pressure relief cavity 3, the bottom ends of the two stop rods 6 are in contact with the top of the movable seat 5, and the height position of the movable seat 5 can be stopped and limited by the two stop rods 6;
fixed mounting has two bleeder pipes 7 on the right side outer wall of pressure release seat 2, two bleeder pipes 7 all are linked together with pressure release chamber 3 is inside, equal fixed mounting has the check valve in two bleeder pipes 7, utilize the check valve, steerable gas is from bleeder pipe 7 one-way flow, the same main 8 of bleeding of right-hand member fixedly connected with of two bleeder pipes 7, utilize movable seat 5, can carry out the shutoff to the one end of two bleeder pipes 7, be provided with pressure release mechanism on the pressure release seat 2, through utilizing pressure release mechanism, can realize carrying out the effect of pressure release protection to self-closing valve body 1.
In this embodiment, fixed cover is equipped with the pipe strap on the main 8 of exitting, and the right side outer wall fixed connection of pipe strap and pressure release seat 2 can consolidate the mounted position of main 8 of exitting through setting up the pipe strap.
In this embodiment, the pressure relief mechanism includes a sliding rod 10, a connecting plate 11, a spring 12 and a positioning assembly, a sliding groove 9 is provided at the bottom of the movable seat 5, the sliding rod 10 is slidably mounted in the sliding groove 9, the bottom end of the sliding rod 10 extends out of the sliding groove 9, the connecting plate 11 is fixedly mounted at the bottom end of the sliding rod 10, the top end of the spring 12 is fixedly connected with the bottom of the movable seat 5, the bottom end of the spring 12 is fixedly connected with the top of the connecting plate 11, the spring 12 is sleeved on the sliding rod 10, and the spring 12 can control the movable seat 5 to automatically reset by utilizing the elastic force of the spring 12.
In this embodiment, the inner walls of the two sides of the sliding groove 9 are both provided with a limiting groove, the two sides of the sliding rod 10 are both fixedly provided with a limiting rod, the two limiting rods are respectively slidably mounted in the corresponding limiting grooves, and the moving stroke of the movable seat 5 can be limited by the sliding connection and matching of the limiting rods in the limiting grooves.
In this embodiment, two vertical guide rods 19 are fixedly installed on the inner wall of the bottom of the pressure relief cavity 3, the connecting plate 11 is slidably sleeved on the two vertical guide rods 19, and the two vertical guide rods 19 can guide the moving direction of the connecting plate 11.
In the embodiment, the positioning assembly comprises a screw rod 14, a handle 15 and a positioning bolt 17, a first threaded hole 13 is formed in the inner wall of the bottom of the pressure relief cavity 3, the screw rod 14 is installed in the first threaded hole 13 in a threaded manner, two ends of the screw rod 14 extend out of the first threaded hole 13, the top end of the screw rod 14 is in contact with the bottom of the connecting plate 11, the handle 15 is fixedly installed at the bottom end of the screw rod 14, a second threaded hole 16 is formed in the top of the handle 15, the positioning bolt 17 is installed in the second threaded hole 16 in a threaded manner, two ends of the positioning bolt 17 extend out of the second threaded hole 16, a plurality of positioning grooves 18 are formed in the bottom of the pressure relief seat 2, the plurality of positioning grooves 18 are annularly arranged at equal intervals with the screw rod 14 as the center, the top end of the positioning bolt 17 extends into the corresponding positioning groove 18, the height position of the connecting plate 11 can be limited by the screw rod 14, the handle 15 is convenient for rotating the screw rod 14, the position of the handle 15 can be fixed by the inserting and matching of the positioning bolt 17 and the positioning groove 18, and the rotation of the handle 15 can be limited.
In this embodiment, the left side fixed mounting of connecting plate 11 has pointer 20, has seted up the bar hole on the left side inner wall of pressure release chamber 3, and the bar hole is run through to pointer 20's left end, and fixed mounting has scale 21 that is located bar hole rear on the left side outer wall of pressure release seat 2, utilizes pointer 20 and scale 21, is convenient for learn the deflection size of spring 12.
In this embodiment, the one end that bleeder branch 7 was kept away from to gassing house steward 8 is connected with the inlet end of gas receiving flask, and the theory of operation and the inner structure of self-closing valve body 1 all belong to the conventional technical means in prior art field, consequently no longer give unnecessary details.
The working principle is as follows: when the self-closing valve body 1 is installed on a gas pipeline for use, when the pressure value of gas in the gas pipeline is within a normal pressure range, the self-closing valve body 1 is opened and normally works, at the moment, the movable seat 5 seals one end of the two gas discharging branch pipes 7, when the gas pressure in the gas pipeline is abnormal and high pressure occurs, and high-pressure gas enters the self-closing valve body 1, the self-closing valve body 1 can be automatically closed in a moving mode, the gas with certain high pressure enters the pressure relief cavity 3 through the communicating pipe 4, when the gas pressure accumulated at the gas inlet end of the self-closing valve body 1 is increased, the gas with certain pressure pushes the movable seat 5 to vertically move downwards, so that the sliding rod 10 drives the two limiting rods to respectively slide in the corresponding limiting grooves, at the moment, the spring 12 is gradually subjected to compression deformation, and the movable seat 5 gradually releases the sealing of the gas discharging branch pipes 7 at the upper position in the downward moving process, the gas can be discharged from the main gas discharging pipe 8 through the branch gas discharging pipe 7 at the upper position, so as to automatically discharge the pressure inside the self-closing valve body 1, when the pressure of the gas is too high, the longer the stroke for pushing the movable seat 5 to move downwards is, the lower position of the movable seat 5 is also gradually unblocked, at the moment, the gas can be discharged through the two branch gas discharging pipes 7 and the main gas discharging pipe 8 in sequence, so as to rapidly discharge the pressure inside the self-closing valve body 1, when the pressure of the gas is gradually restored to a normal state, the movable seat 5 can be controlled to move upwards to the original position under the action of the rebounding force of the spring 12, at the moment, the top of the movable seat 5 is abutted against the bottom ends of the two stop levers 6, the movable seat 5 can be used for blocking one end of the two branch gas discharging pipes 7 again, so as to prevent the gas from being discharged from the main gas discharging pipe 8, so as to realize the automatic effective pressure discharge protection effect inside the self-closing valve body 1, when the self-closing valve body 1 is used, the fixing of the handle 15 is released by screwing the positioning bolt 17 out of the corresponding positioning groove 18, the handle 15 drives the screw rod 14 to rotate and move downwards by rotating the handle 15 anticlockwise, the connecting plate 11 and the pointer 20 can be pushed to vertically move downwards under the action of the elastic force of the spring 12, the data of the pointer 20 pointing to the graduated scale 21 is changed, the connecting plate 11 always abuts against the top end of the screw rod 14 when moving downwards, the extension size of the spring 12 is gradually increased, the screw rod 14 is driven to rotate and move upwards by rotating the handle 15 clockwise, the connecting plate 11 and the pointer 20 are pushed by the screw rod 14 to vertically move upwards, the data of the pointer 20 pointing to the graduated scale 21 is changed, the spring 12 is gradually compressed, the extension size of the spring 12 is gradually reduced at the same time, when the length size of the spring 12 is adjusted to a proper position according to requirements, the positioning bolt 17 is screwed in the corresponding positioning groove 18, the rotation of the handle 15 and the screw 14 can be limited, and the position of the connecting plate 11 can be kept unchanged, further, when the extension size of the spring 12 is increased and adjusted, the gas pressure value born by the self-closing valve body 1 during pressure relief can be reduced, when the extension size of the spring 12 is reduced and adjusted, the gas pressure value born by the self-closing valve body 1 during pressure relief can be increased, so as to adjust the range of the gas pressure value born by the self-closing valve body 1 when the pressure is released according to the use requirement, and those not described in detail in this specification are well within the skill of those in the art.
In conclusion, the pipeline gas self-closing valve can automatically perform effective pressure relief protection on the inside of the self-closing valve body 1, avoid the phenomenon that the self-closing valve body 1 or a gas pipeline is damaged due to large pressure, improve the safety performance of the self-closing valve body 1 in use, and adjust the range of the gas pressure value borne by the self-closing valve body 1 in pressure relief according to use requirements.
Claims (7)
1. Pipeline gas self-closing valve, including self-closing valve body (1), its characterized in that: the self-closing valve comprises a self-closing valve body (1), wherein a pressure relief seat (2) is fixedly installed at the bottom of the self-closing valve body (1), a pressure relief cavity (3) is formed in the pressure relief seat (2), a communicating pipe (4) is fixedly installed at the top of the pressure relief seat (2), the top end of the communicating pipe (4) extends into the self-closing valve body (1), the bottom end of the communicating pipe (4) extends into the pressure relief cavity (3), a movable seat (5) is installed in the pressure relief cavity (3) in a sliding mode, the outer side wall of the movable seat (5) is in sliding sealing contact with the inner side wall of the pressure relief cavity (3), two stop levers (6) are fixedly installed on the inner wall of the top of the pressure relief cavity (3), and the bottom ends of the two stop levers (6) are both in contact with the top of the movable seat (5);
fixed mounting has two bleeder branch (7), two on the right side outer wall of pressure release seat (2) bleeder branch (7) all with pressure release chamber (3) inside is linked together, two equal fixed mounting has a check valve, two in bleeder branch (7) the same main (8) of bleeding of right-hand member fixedly connected with of bleeder branch (7), be provided with pressure release mechanism on pressure release seat (2).
2. The pipeline gas self-closing valve according to claim 1, wherein: the fixed cover is equipped with the pipe strap on gassing house steward (8), the pipe strap with the right side outer wall fixed connection of pressure release seat (2).
3. The pipeline gas self-closing valve according to claim 1, wherein: pressure release mechanism includes slide bar (10), connecting plate (11), spring (12) and locating component, spout (9) have been seted up to the bottom of sliding seat (5), slide bar (10) slidable mounting be in spout (9), the bottom of slide bar (10) extends to outside spout (9), connecting plate (11) fixed mounting be in the bottom of slide bar (10), the top of spring (12) with the bottom fixed connection of sliding seat (5), the bottom of spring (12) with the top fixed connection of connecting plate (11), spring (12) cover is established on slide bar (10).
4. The pipeline gas self-closing valve according to claim 3, wherein: limiting grooves are formed in the inner walls of the two sides of the sliding groove (9), limiting rods are fixedly mounted on the two sides of the sliding rod (10), and the two limiting rods are slidably mounted in the corresponding limiting grooves respectively.
5. The pipeline gas self-closing valve according to claim 3, wherein: two vertical guide rods (19) are fixedly mounted on the inner wall of the bottom of the pressure relief cavity (3), and the connecting plate (11) is sleeved on the two vertical guide rods (19) in a sliding mode.
6. The pipeline gas self-closing valve according to claim 3, wherein: the positioning assembly comprises a screw rod (14), a handle (15) and a positioning bolt (17), a first threaded hole (13) is formed in the inner wall of the bottom of the pressure relief cavity (3), the screw rod (14) is installed in the first threaded hole (13) in a threaded manner, two ends of the screw rod (14) extend out of the first threaded hole (13), the top end of the screw rod (14) is in contact with the bottom of the connecting plate (11), the handle (15) is fixedly installed at the bottom end of the screw rod (14), a second threaded hole (16) is formed in the top of the handle (15), the positioning bolt (17) is installed in the second threaded hole (16) in a threaded manner, two ends of the positioning bolt (17) extend out of the second threaded hole (16), a plurality of positioning grooves (18) are formed in the bottom of the pressure relief seat (2), and the positioning grooves (18) are annularly arranged at equal intervals by taking the screw rod (14) as the center, the top ends of the positioning bolts (17) extend into the corresponding positioning grooves (18).
7. The pipeline gas self-closing valve according to claim 3, wherein: the left side fixed mounting of connecting plate (11) has pointer (20), the bar hole has been seted up on the left side inner wall of pressure release chamber (3), the left end of pointer (20) runs through the bar hole, fixed mounting has scale (21) that are located bar hole rear on the left side outer wall of pressure release seat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220713684.XU CN217003252U (en) | 2022-03-29 | 2022-03-29 | Pipeline gas self-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220713684.XU CN217003252U (en) | 2022-03-29 | 2022-03-29 | Pipeline gas self-closing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217003252U true CN217003252U (en) | 2022-07-19 |
Family
ID=82371968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220713684.XU Active CN217003252U (en) | 2022-03-29 | 2022-03-29 | Pipeline gas self-closing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217003252U (en) |
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2022
- 2022-03-29 CN CN202220713684.XU patent/CN217003252U/en active Active
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