CN216410561U - Low pressure bypass valve water pressure test fixture - Google Patents
Low pressure bypass valve water pressure test fixture Download PDFInfo
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- CN216410561U CN216410561U CN202123042252.5U CN202123042252U CN216410561U CN 216410561 U CN216410561 U CN 216410561U CN 202123042252 U CN202123042252 U CN 202123042252U CN 216410561 U CN216410561 U CN 216410561U
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- bypass valve
- test fixture
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Abstract
The utility model relates to a low-pressure bypass valve water pressure test fixture which comprises a cover plate, a screw rod, a pressing plate, an upper supporting rod and a lower sealing assembly, wherein the cover plate and the lower sealing assembly are inserted and connected through the upper supporting rod and are fixedly connected through a first nut, the pressing plate is arranged at the bottom end of the screw rod, the screw rod is connected to a valve core in a pressing mode through a second nut, a valve seat is arranged at the bottom end of the valve core, a through hole is formed in the top end of the valve core, the screw rod penetrates through the through hole, and the top end of the lower sealing assembly is connected with the valve seat in a sealing mode. The low-pressure bypass valve water pressure test fixture has the advantages of simplifying the structure, facilitating the operation, being beneficial to the field use, improving the universality and the like.
Description
Technical Field
The utility model relates to the technical field of water pressure test fixtures, in particular to a low-pressure bypass valve water pressure test fixture.
Background
At present, the low-pressure bypass valve plays a role of protecting a main valve, and the opening and closing of the main valve can be avoided as far as possible during small flow regulation. When the main valve is completely closed, one side of the main valve is pressed and the other side of the main valve is not pressed, and the sealing surface of the main valve can be damaged by pulling when the main valve is directly opened, so that the bypass valve is opened before the main valve is opened to play a role in protection.
The maintenance of the bypass valve mainly comprises the grinding of the sealing surfaces of the valve seat and the valve core, and a hydraulic test is needed to verify the sealing performance of the sealing surfaces after the grinding. The structure of the clamp is fixed and is not universal.
Therefore, a water pressure test fixture of the low-pressure bypass valve is developed to solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a water pressure test fixture for a low-pressure bypass valve, which has the advantages of simplified structure, convenience in operation, convenience in field use, improved universality and the like.
In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a low pressure bypass valve water pressure test fixture, includes a apron, a plurality of screw rods, a clamp plate, a plurality of bracing piece and a seal assembly down, the apron with seal assembly down passes through the bracing piece is pegged graft to through first nut fixed connection, the bottom department of screw rod is equipped with the clamp plate, the screw rod passes through second nut crimping to case, the bottom department of case is equipped with a disk seat to the top is equipped with a plurality of perforation, the screw rod passes the perforation setting, seal assembly down the top with disk seat sealing connection.
Preferably, the lower sealing assembly comprises an upper plate, a bottom plate and a plurality of lower supporting rods, and the upper plate is fixedly connected with the bottom plate through the lower supporting rods.
Preferably, a sunken groove is formed in the center of the top end of the upper plate, and the valve seat is connected with the sunken groove in a sealing mode through a sealing ring.
Preferably, the bottom end of the sinking groove is provided with a first threaded hole, and the first threaded hole is connected to the manual hydraulic pump through a test connector.
Preferably, the four corners of the upper plate are respectively provided with a second threaded hole, the top end of the lower support rod is provided with an internal thread, and the second threaded holes are fixedly connected with the internal thread and fixedly connected with the bottom end of the upper support rod.
Preferably, the bottom end of the lower support rod is provided with an external thread, four corners of the bottom plate are respectively provided with a third threaded hole, and the external thread is fixedly connected with the third threaded holes.
Preferably, the top end of the pressing plate is provided with a plurality of blind holes, and the bottom end of the screw is fixedly connected with the blind holes.
Preferably, a through hole is formed in the center of the top end of the cover plate, and the bottom end of the through hole is abutted to the valve core.
Preferably, four corners of the cover plate are respectively provided with a fourth threaded hole, and the fourth threaded holes are fixedly connected with the top end of the upper supporting rod.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the low-pressure bypass valve water pressure test fixture is simple in structure and convenient to transfer; the on-site application is convenient, and the problem of on-site water pressure is quickly solved; meanwhile, the hydraulic test fixture is high in form applicability, can be simply transformed on the basis to adapt to a hydraulic test similar to a valve, and has a good use value.
Drawings
FIG. 1 is a schematic structural diagram of a low-pressure bypass valve hydraulic pressure test fixture according to the present invention.
Detailed Description
The utility model is described in further detail below with reference to the figures and the embodiments.
In fig. 1, a hydraulic test fixture for a low-pressure bypass valve comprises a cover plate 9, a plurality of screws 2, a pressure plate 5, a plurality of upper support rods 4 and a lower sealing assembly. The lower seal assembly includes an upper plate 6, a bottom plate 8 and a plurality of lower support rods 7.
The cover plate 9 is inserted with the lower sealing component through the upper supporting rod 4 and is fixedly connected with the lower sealing component through the first nut 3. The bottom end of the screw 2 is provided with a pressing plate 5, and the screw 2 is pressed on the valve core 100 through a second nut 1. The valve core 100 has a valve seat 102 at the bottom end and a plurality of through holes 101 at the top end. The screw 2 is disposed through the through hole 101 and the top end of the lower seal assembly is sealingly connected to the valve seat 102.
The top end of the pressure plate 5 is provided with a plurality of blind holes 51, and the bottom end of the screw rod 2 is fixedly connected with the blind holes 51. Before testing, the second nut 1 is loosened, so that a gap exists between the pressure plate 5 and the valve core 100. The pressure plate 5 and the second nut 1 press and seal the valve core 100.
The top center of the upper plate 6 is provided with a sinking groove 62, the bottom of the sinking groove 62 is provided with a first threaded hole 63, and four corners of the upper plate 6 are respectively provided with a second threaded hole 61. The valve seat 102 is sealingly connected to the sink 62 by a sealing ring. The first threaded hole 63 is connected to the manual hydraulic pump through a test connection 64. The manual hydraulic pump provides a hydraulic test to the valve seat 102.
The top end of the lower support rod 7 is provided with an internal thread 72, and the bottom end of the lower support rod 7 is provided with an external thread 71. The second threaded hole 61 is fixedly connected with the internal thread 72 and fixedly connected with the external thread at the bottom end of the upper support rod 4.
The four corners of the bottom plate 8 are respectively provided with a third threaded hole 81, and the external threads 71 are fixedly connected with the third threaded holes 81. The upper plate 6 is fixedly connected with the bottom plate 8 through a lower support rod 7.
A through hole 92 is arranged at the center of the top end of the cover plate 9, and a fourth threaded hole 91 is respectively arranged at the four corners of the cover plate 9. The bottom end of the through hole 92 abuts against the valve body 100. The fourth threaded hole 91 is fixedly connected with the top end of the upper support rod 4. The cover plate 9 and the upper plate 6 press the valve seat 102 to seal.
After the valve seat 102 of the low-pressure bypass valve and the sealing surface of the valve core 100 are ground, a certain axial sealing force is applied between the sealing surfaces, meanwhile, the bottom hole of the valve seat is sealed by the sink groove 62, the joint of the sealing elements is ensured to bear a specified water pressure value, and then the leakage condition of the sealing surfaces is observed. The fixture is manufactured to firmly fix the valve seat 102 and the valve core 100, simultaneously, sealing external force is applied, specified water pressure can be guaranteed, and the fixture adopts a frame type form to match with a manual hydraulic pump to meet test requirements.
The test connector 64 is connected to a manual hydraulic pump, and is gradually pressed to discharge air in the valve core 100, when the pressure is pressed to the position above the valve core 100 and water overflows, the air in the valve core 100 is discharged, at the moment, the second nut 1 is locked, and then the pressure is continuously pressed to the test pressure. At the moment, observing whether water leaks from the gauge pressure, the sealing position of the valve seat 102 and the sealing surface joint, if the gauge pressure does not drop and no water drops overflow from the sealing surface joint, indicating that the sealing surface is well sealed, and meeting the test requirements; if water exists on the sealing surface, the water leaks obviously, the sealing surface is unqualified to be ground, and the sealing surface needs to be ground again.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides a low pressure bypass valve water pressure test fixture which characterized in that: the novel valve core is characterized by comprising a cover plate, a plurality of screw rods, a pressing plate, a plurality of upper supporting rods and a lower sealing assembly, wherein the cover plate is connected with the lower sealing assembly in an inserting mode through the upper supporting rods and is fixedly connected with the lower sealing assembly through first nuts, the pressing plate is arranged at the bottom ends of the screw rods, the screw rods are connected to a valve core in a pressing mode through second nuts, a valve seat is arranged at the bottom ends of the valve core, a plurality of through holes are formed in the top ends of the valve core, the screw rods penetrate through the through holes, and the top ends of the lower sealing assembly are connected with the valve seat in a sealing mode.
2. The fixture of claim 1, wherein the lower seal assembly comprises an upper plate, a bottom plate, and a plurality of lower support rods, and the upper plate and the bottom plate are fixedly connected by the lower support rods.
3. The hydraulic test fixture for the low-pressure bypass valve according to claim 2, wherein a sunken groove is formed in the center of the top end of the upper plate, and the valve seat is connected with the sunken groove in a sealing mode through a sealing ring.
4. The low pressure bypass valve hydraulic test fixture of claim 3, wherein the bottom end of the sink is provided with a first threaded hole, and the first threaded hole is connected to the manual hydraulic pump through a test connector.
5. The low pressure bypass valve hydraulic test fixture of claim 2, wherein a second threaded hole is formed at each of four corners of the upper plate, an internal thread is formed at the top end of the lower support rod, and the second threaded hole is fixedly connected with the internal thread and fixedly connected with the bottom end of the upper support rod.
6. The low pressure bypass valve hydraulic pressure test fixture of claim 2, wherein the bottom end of the lower support rod is provided with an external thread, four corners of the bottom plate are respectively provided with a third threaded hole, and the external thread is fixedly connected with the third threaded hole.
7. The low pressure bypass valve hydraulic pressure test fixture of claim 2, wherein the top end of the pressure plate is provided with a plurality of blind holes, and the bottom end of the screw is fixedly connected with the blind holes.
8. The clamp for testing the water pressure of the low-pressure bypass valve according to claim 2, wherein a through hole is formed in the center of the top end of the cover plate, and the bottom end of the through hole abuts against the valve core.
9. The hydraulic test fixture for the low-pressure bypass valve according to claim 2, wherein a fourth threaded hole is formed in each of four corners of the cover plate, and the fourth threaded holes are fixedly connected with the top end of the upper support rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123042252.5U CN216410561U (en) | 2021-12-06 | 2021-12-06 | Low pressure bypass valve water pressure test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123042252.5U CN216410561U (en) | 2021-12-06 | 2021-12-06 | Low pressure bypass valve water pressure test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216410561U true CN216410561U (en) | 2022-04-29 |
Family
ID=81305907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123042252.5U Active CN216410561U (en) | 2021-12-06 | 2021-12-06 | Low pressure bypass valve water pressure test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216410561U (en) |
-
2021
- 2021-12-06 CN CN202123042252.5U patent/CN216410561U/en active Active
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