CN220185847U - Low-pressure cut-off valve - Google Patents
Low-pressure cut-off valve Download PDFInfo
- Publication number
- CN220185847U CN220185847U CN202321521813.6U CN202321521813U CN220185847U CN 220185847 U CN220185847 U CN 220185847U CN 202321521813 U CN202321521813 U CN 202321521813U CN 220185847 U CN220185847 U CN 220185847U
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- China
- Prior art keywords
- valve
- mounting
- valve body
- wall
- low pressure
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- 238000007789 sealing Methods 0.000 claims abstract description 31
- 239000013013 elastic material Substances 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims abstract 9
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 1
- 235000017491 Bambusa tulda Nutrition 0.000 claims 1
- 241001330002 Bambuseae Species 0.000 claims 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 1
- 239000011425 bamboo Substances 0.000 claims 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 26
- 239000003345 natural gas Substances 0.000 abstract description 13
- 238000001125 extrusion Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model discloses a low-pressure shut-off valve, which relates to the technical field of shut-off valves and comprises a valve body, wherein an installation cylinder is arranged in communication with the center of the upper surface of the valve body, a first sealing flange is arranged on the upper surface of the installation cylinder, a second sealing flange is arranged on the upper surface of the first sealing flange through a plurality of installation bolts, a motor is arranged at the center of the upper surface of the second sealing flange, the output end of the motor penetrates through the upper surface of the installation cylinder and extends into the interior of the installation cylinder, a screw is arranged at the output end of the motor, and a moving block is arranged on the screw wall thread of the screw. According to the utility model, the screw rod can be driven to rotate by the motor, so that the two valve connecting rods drive the plugging balls made of the elastic material to move into the mounting ring, the plugging balls and the mounting ring are in an extrusion state, the sealing performance is good, the situation that leakage does not occur when a natural gas pipeline is detected manually is ensured, and the safety is good.
Description
Technical Field
The utility model relates to the technical field of shut-off valves, in particular to a low-pressure shut-off valve.
Background
The shut-off valve is a common valve type, and mainly used for controlling the flow of fluid so as to achieve the purpose of shutting off or regulating the fluid, and when the shut-off valve works, the flow of the fluid is controlled through a valve core or a valve plate in the valve so as to achieve the purpose of shutting off or regulating the fluid, and the shut-off valve can be classified into a pneumatic emergency shut-off valve, a hydraulic emergency shut-off valve, an electric emergency shut-off valve, a fuel gas emergency shut-off valve, a liquid ammonia emergency shut-off valve, an ammonia emergency shut-off valve and the like, and the places where each shut-off valve is utilized are different.
In the prior art, when the emergency cut-off valve for safety of the development and production of the natural gas pipeline is used, if the pressure of the pipeline is abnormal, for example, when the pressure is lower, the valve is required to rapidly complete the cut-off action, a worker checks whether leakage occurs to the pipeline, at the moment, the valve can also be called a low-pressure emergency cut-off valve, but the problem of poor sealing performance often occurs when the existing low-pressure cut-off valve is used, the natural gas leakage not only causes personal hazard, but also is very likely to cause safety accidents, and therefore, the low-pressure cut-off valve is required to meet the demands of people.
Disclosure of Invention
The utility model aims to provide a low-pressure cut-off valve, which solves the problem that the existing low-pressure cut-off valve provided in the background art is often poor in tightness when in use, and natural gas leakage can cause personal injury and is very likely to cause safety accidents.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a low pressure trip valve, includes the valve body, the center department intercommunication of valve body upper surface installs the mounting cylinder, the upper surface mounting of mounting cylinder has first sealing flange, the second sealing flange is installed through a plurality of mounting bolts to the upper surface of first sealing flange, the motor is installed to the center department of second sealing flange upper surface, the output of motor runs through the upper surface of mounting cylinder and extends to its inside, the screw rod is installed to the output of motor, the movable block is installed to the pole wall screw thread of screw rod, the guide way has all been seted up to the left and right sides of mounting cylinder inner wall, two the equal slidable mounting of inner wall of guide way has the Z type piece, two opposite one side of Z type piece is fixed with the left and right sides of movable block respectively, the below of movable block is provided with shutoff mechanism.
Preferably, the plugging mechanism comprises two valve connecting rods, the upper ends of the two valve connecting rods are fixed with the lower surfaces of the corresponding Z-shaped blocks respectively, the lower ends of the two valve connecting rods are provided with compression sealing gaskets jointly, the lower surfaces of the compression sealing gaskets are provided with mounting blocks, the lower surfaces of the mounting blocks are provided with plugging balls, the plugging balls are made of polyurethane elastic materials, connecting plates are arranged on the left side and the right side of the inner wall of the valve body respectively, and mounting rings are arranged on the opposite sides of the two connecting plates jointly.
Preferably, a limiting block is arranged on the lower surface of the screw rod.
Preferably, the mounting ring is made of stainless steel materials, the caliber of the mounting ring is smaller than the diameter of the plugging ball, and the size of the mounting block is smaller than that of the mounting ring in a matching way.
Preferably, the left and right sides of the outer wall of the valve body are provided with mounting flanges, and a plurality of flange screw holes are formed in one side surface of each of the mounting flanges.
Preferably, the left side of valve body inner wall installs first filter screen, the right side of valve body inner wall installs the second filter screen, the mesh of first filter screen is greater than the mesh of second filter screen.
Preferably, the upper surface of the valve body is provided with a plurality of supporting legs, the upper surfaces of the supporting legs are provided with protection plates together, and the supporting legs and the protection plates are integrally arranged.
The beneficial effects of the utility model are as follows:
according to the utility model, through the arrangement of the valve body, the mounting cylinder, the first sealing flange, the second sealing flange, the motor, the screw, the moving block, the Z-shaped block and the plugging mechanism, the screw can be driven to rotate by the motor, so that the two valve connecting rods drive the plugging balls made of elastic materials to move into the mounting ring, the plugging balls and the mounting ring are in an extrusion state, the sealing performance is good, the situation that leakage does not occur when a natural gas pipeline is detected manually is ensured, and the safety is good.
According to the utility model, the movement of the moving block can be limited by the arrangement of the limiting block, so that the situation that the moving block cannot fall off is ensured, and the normal operation of equipment is ensured.
Drawings
Fig. 1 is a schematic perspective view of a low-pressure shut-off valve according to the present utility model;
FIG. 2 is a schematic diagram showing a front sectional structure of a low pressure shut-off valve according to the present utility model;
FIG. 3 is a schematic perspective view of a mounting ring of a low pressure shut-off valve according to the present utility model;
in the figure: 1. a valve body; 2. a mounting cylinder; 3. a first sealing flange; 4. a second sealing flange; 5. installing a bolt; 6. a motor; 7. a guide groove; 8. a Z-shaped block; 9. a screw; 10. a moving block; 11. a valve connecting rod; 12. compressing the gasket; 13. a mounting block; 14. a blocking ball; 15. a connecting plate; 16. a mounting ring; 17. a first filter screen; 18. a second filter screen; 19. a mounting flange; 20. a flange screw hole; 21. support legs; 22. a protection plate; 23. and a limiting block.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-3, a low pressure shut-off valve, including valve body 1, the center department intercommunication of valve body 1 upper surface installs mounting cylinder 2, mounting cylinder 2's upper surface installs first sealing flange 3, first sealing flange 3's upper surface installs second sealing flange 4 through a plurality of mounting bolts 5, motor 6 is installed to the center department of second sealing flange 4 upper surface, the output of motor 6 runs through mounting cylinder 2's upper surface and extends to its inside, screw rod 9 is installed to the output of motor 6, movable block 10 is installed to screw rod 9's pole wall screw thread, guide way 7 has all been seted up to mounting cylinder 2 inner wall's left and right sides, the inner wall of two guide ways 7 is all slidable mounting Z type piece 8, the opposite side of two Z type pieces 8 is fixed with the left and right sides of movable block 10 respectively, the below of movable block 10 is provided with shutoff mechanism, can drive screw rod 9 through motor 6 and rotate, and then make two valve connecting rod 11 drive the shutoff ball 14 that elastic material made move into the collar 16, make between ball 14 and the collar 16 be in the extrusion state, the good detection of sealing performance can be better, the leak protection can not appear in the circumstances when the natural gas is better.
As shown in fig. 1 and 3, the mounting flanges 19 are mounted on the left and right sides of the outer wall of the valve body 1, a plurality of flange screw holes 20 are formed in one side surface of each of the two mounting flanges 19, so that the valve body 1 is conveniently connected with a corresponding pipeline, a plurality of supporting legs 21 are mounted on the upper surface of the valve body 1, protection plates 22 are mounted on the upper surfaces of the supporting legs 21, the supporting legs 21 and the protection plates 22 are integrally arranged, and the upper side of the motor 6 can be protected against damage.
As shown in fig. 2, the mounting ring 16 is made of stainless steel materials, the caliber of the mounting ring 16 is smaller than the diameter of the plugging ball 14, the size of the mounting block 13 is smaller than that of the mounting ring 16, the wear resistance and corrosion resistance of the mounting ring 16 can be improved, the service life of the mounting ring 16 is further prolonged, the first filter screen 17 is mounted on the left side of the inner wall of the valve body 1, the second filter screen 18 is mounted on the right side of the inner wall of the valve body 1, the meshes of the first filter screen 17 are larger than those of the second filter screen 18, fluid entering the valve body 1 can be simply filtered, the functionality of the valve body 1 is improved, the limiting block 23 is mounted on the lower surface of the screw 9, the movement of the moving block 10 can be limited, the situation that the moving block 10 cannot fall off is guaranteed, and the normal operation of equipment is guaranteed.
The working principle of the utility model is as follows: when the natural gas pipeline valve is used, the valve body 1 is connected with the natural gas pipeline through the flange screw holes 20 formed in the mounting flanges 19 on the two sides of the valve body 1, so that the natural gas can pass through the valve body 1, if the phenomenon that the natural gas pipeline is low in pressure is detected in the use process, the internal natural gas is required to be cut off through the valve body 1, and then the natural gas pipeline is checked;
the motor 6 on the second sealing flange 4 is opened, the output end of the motor 6 drives the screw rod 9 to rotate, then the moving block 10 moves downwards, the Z-shaped blocks 8 in the two guide grooves 7 limit and guide the movement of the moving block, the two Z-shaped blocks 8 move downwards and drive the corresponding valve connecting rods 11 to move downwards, the valve connecting rods 11 move downwards to drive the mounting blocks 13 to move downwards through the compression sealing gaskets 12, the lower surfaces of the plugging balls 14 are in contact with the mounting rings 16, and the plugging balls 14 are made of polyurethane elastic materials, so that the surfaces of the plugging balls 14 are compressed into the inner walls of the mounting rings 16 along with the increase of the pressure of the plugging balls 14 given by the mounting blocks 13, and at the moment, the natural gas circulation channel is cut off, so that the sealing performance is better.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (7)
1. The utility model provides a low pressure trip valve, includes valve body (1), its characterized in that: the center of the upper surface of the valve body (1) is communicated with a mounting cylinder (2), the upper surface of the mounting cylinder (2) is provided with a first sealing flange (3), the upper surface of the first sealing flange (3) is provided with a second sealing flange (4) through a plurality of mounting bolts (5), the center of the upper surface of the second sealing flange (4) is provided with a motor (6), the output end of the motor (6) penetrates through the upper surface of the mounting cylinder (2) and extends into the mounting cylinder, the output of motor (6) is installed screw rod (9), movable block (10) are installed to the pole wall screw thread of screw rod (9), guide way (7) have all been seted up to the left and right sides of installation section of thick bamboo (2) inner wall, two equal slidable mounting of inner wall of guide way (7) has Z type piece (8), two opposite one side of Z type piece (8) is fixed with the left and right sides of movable block (10) respectively, the below of movable block (10) is provided with shutoff mechanism.
2. A low pressure shut off valve as in claim 1 wherein: the plugging mechanism comprises two valve connecting rods (11), the upper ends of the two valve connecting rods (11) are fixed with the lower surfaces of corresponding Z-shaped blocks (8) respectively, compression sealing gaskets (12) are jointly installed at the lower ends of the two valve connecting rods (11), installation blocks (13) are installed on the lower surfaces of the compression sealing gaskets (12), plugging balls (14) are installed on the lower surfaces of the installation blocks (13), the plugging balls (14) are made of polyurethane elastic materials, connecting plates (15) are installed on the left side and the right side of the inner wall of the valve body (1), and installation rings (16) are installed on the opposite sides of the two connecting plates (15) jointly.
3. A low pressure shut off valve as in claim 1 wherein: a limiting block (23) is arranged on the lower surface of the screw rod (9).
4. A low pressure shut off valve as in claim 2 wherein: the mounting ring (16) is made of stainless steel materials, the caliber of the mounting ring (16) is smaller than the diameter of the plugging ball (14), and the size of the mounting block (13) is smaller than that of the mounting ring (16) in a matching way.
5. A low pressure shut off valve as in claim 1 wherein: mounting flanges (19) are arranged on the left side and the right side of the outer wall of the valve body (1), and a plurality of flange screw holes (20) are formed in one side surface of each mounting flange (19).
6. A low pressure shut off valve as in claim 1 wherein: the valve is characterized in that a first filter screen (17) is arranged on the left side of the inner wall of the valve body (1), a second filter screen (18) is arranged on the right side of the inner wall of the valve body (1), and meshes of the first filter screen (17) are larger than those of the second filter screen (18).
7. A low pressure shut off valve as in claim 1 wherein: the valve is characterized in that a plurality of supporting legs (21) are arranged on the upper surface of the valve body (1), protection plates (22) are jointly arranged on the upper surfaces of the supporting legs (21), and the supporting legs (21) and the protection plates (22) are integrally arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321521813.6U CN220185847U (en) | 2023-06-15 | 2023-06-15 | Low-pressure cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321521813.6U CN220185847U (en) | 2023-06-15 | 2023-06-15 | Low-pressure cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220185847U true CN220185847U (en) | 2023-12-15 |
Family
ID=89110983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321521813.6U Active CN220185847U (en) | 2023-06-15 | 2023-06-15 | Low-pressure cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220185847U (en) |
-
2023
- 2023-06-15 CN CN202321521813.6U patent/CN220185847U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |