CN215004749U - Pressure steel pipe flange face pressure test device - Google Patents
Pressure steel pipe flange face pressure test device Download PDFInfo
- Publication number
- CN215004749U CN215004749U CN202121645841.XU CN202121645841U CN215004749U CN 215004749 U CN215004749 U CN 215004749U CN 202121645841 U CN202121645841 U CN 202121645841U CN 215004749 U CN215004749 U CN 215004749U
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- Prior art keywords
- pressure
- steel pipe
- flange face
- test device
- water
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- Expired - Fee Related
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- 238000012360 testing method Methods 0.000 title claims abstract description 41
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 34
- 239000010959 steel Substances 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 238000007789 sealing Methods 0.000 claims abstract description 48
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 description 6
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a pressure steel pipe flange face pressure test device, include water sealing ring (1) that comprises two semicircle rings (11), be equipped with bracing piece (2) between two semicircle rings (11), be equipped with recess (31) and seal groove (32) on the contact surface that water sealing ring (1) and the intraductal flange face of pressure steel contacted, form inclosed water injection chamber between recess (31) and the flange face, seal groove (32) are located the both sides of recess (31), be equipped with the sealing ring in seal groove (32), be equipped with water inlet (33) and gas vent (34) with recess (31) intercommunication on one of them semicircle ring (11), water inlet (33) are connected with basin (4) through flexible rubber hose (41) and force (forcing) pump (42). The utility model has the characteristics of the test accuracy is high, the commonality is strong.
Description
Technical Field
The utility model relates to a pressure steel pipe test device, especially a pressure steel pipe flange face pressure test device.
Background
The ball valve of the pumped storage power station is connected with the upstream side extension section in a flange mode, and the diameter of the pipeline of the upstream extension section is large, so that sealing is easily damaged by extrusion in the actual construction process, water leakage in the later operation process is caused, and hidden danger is brought to safe and stable operation of equipment. The traditional method for checking whether the seal is intact is to drill radial air holes on an upstream extension section, introduce high-pressure gas between two seals on the flange surface and judge whether the seal is damaged by observing whether the pressure of a barometer is reduced, but the method has limitations. In addition, most flange surfaces of the early pump storage unit are only sealed, and air holes for detecting the good and bad sealing performance are not formed, so that the sealing performance cannot be tested by introducing high-pressure gas. Therefore, the existing pressure test method for the surface of the pressure steel pipe flange has the problems of low test accuracy and low universality.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pressure steel pipe flange face pressure test device. The utility model has the characteristics of the test accuracy is high, the commonality is strong.
The technical scheme of the utility model: the utility model provides a penstock flange face pressure test device, includes the water ring that seals that constitutes by two semicircle rings, is equipped with the bracing piece between two semicircle rings, is equipped with recess and seal groove on the contact surface that the flange face contacted in water ring and the penstock, forms inclosed water injection chamber between recess and the flange face, and the seal groove is located the both sides of recess, is equipped with the sealing ring in the seal groove, is equipped with water inlet and the gas vent with the recess intercommunication on one of them semicircle ring, and the water inlet passes through rubber hose and force (forcing) pump and is connected with the basin.
In the pressure steel pipe flange surface pressure test device, the water inlet is located at the bottom of the semicircular ring, and the air outlet is located at the top of the semicircular ring.
In the pressure test device for the flange surface of the pressure steel pipe, a water inlet valve is arranged at the water inlet, and an exhaust valve is arranged at the exhaust port.
In the pressure test device for the flange surface of the pressure steel pipe, the water sealing ring is provided with a test pressure gauge.
In the pressure steel pipe flange face pressure test device, the two end parts of the supporting rod are respectively provided with the threaded hole, one side of the semicircular ring facing the supporting rod is provided with the threaded column, the thread directions of the two threaded columns are opposite, and the supporting rod is connected with the threaded column through the threaded hole.
In the pressure test device for the flange surface of the pressure steel pipe, a water supply valve, a drain valve and a pressure gauge of the pressure pump are arranged at the outlet of the pressure pump.
In the pressure steel pipe flange face pressure test device, the two end parts of one semicircular ring are provided with the clamping sleeves, the clamping sleeves are internally provided with the sealing gaskets, the two end parts of the other semicircular ring are provided with the clamping heads clamped with the clamping sleeves, and the grooves formed after the two semicircular rings are spliced are communicated.
Compared with the prior art, the device in the utility model can simulate the normal pressure of the pressure steel pipe and the highest pressure when the unit is used for load shedding, effectively solve the problem that the sealing integrity of the flange surface at the joint of the ball valve and the upstream side extension section cannot be verified, use water as a pressure medium, and arrange an independent exhaust valve, so that the gas can be discharged thoroughly, the interference of the gas on the test result is prevented, the environmental condition of the pressure steel pipe after being filled with water is better simulated, and the test pressure is accurate; and the water sealing ring is designed into two semicircular structures, and the water sealing ring is convenient to carry to the interior of the pressure steel pipe, so that the pressure steel pipe sealing ring is convenient to use and simple to operate, and therefore the utility model has the advantages of convenience in use, accuracy in test pressure display, strong universality and the like.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a cross-sectional view at a-a in fig. 1.
The labels in the figures are: 1. a water sealing ring; 11. a semicircular ring; 12. a threaded post; 13. a card sleeve; 14. a chuck 2 and a support rod; 31. a groove; 32. a sealing groove; 33. a water inlet; 34. an exhaust port; 35. a water inlet valve; 36. an exhaust valve; 37. testing the pressure gauge; 4. a water tank; 41. a rubber hose; 42. a pressure pump; 43. a pressure gauge of the pressure pump.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
Example (b):
as shown in fig. 1-2, a pressure steel pipe flange face pressure test device includes a water sealing ring 1 composed of two semicircular rings 11, a support rod 2 is arranged between the two semicircular rings 11, both ends of the support rod 2 are provided with threaded holes, one side of the semicircular ring 11 facing the support rod 2 is provided with a threaded column 12, the thread directions of the two threaded columns 12 are opposite, and the support rod 2 is connected with the threaded column 12 through the threaded hole. A groove 31 and a sealing groove 32 are arranged on the contact surface of the water sealing ring 1, which is contacted with the flange surface in the pressure steel pipe, a closed water injection cavity is formed between the groove 31 and the flange surface, the sealing groove 32 is positioned at two sides of the groove 31, a sealing ring is arranged in the sealing groove 32, a water inlet 33 and an air outlet 34 which are communicated with the groove 31 are arranged on one semicircular ring 11, and the water inlet 33 is connected with the water tank 4 through a rubber hose 41 and a pressure pump 42. The two ends of one semicircular ring 11 are provided with clamping sleeves 13, a sealing gasket is arranged in each clamping sleeve 13, the two ends of the other semicircular ring 11 are provided with clamping heads 14 clamped with the clamping sleeves 13, and the grooves 31 formed after the two semicircular rings 11 are spliced are communicated.
The water sealing ring 1 is arranged into two semicircular rings 11, so that the water sealing ring 1 can be conveniently conveyed into the pressure steel pipe through the volute entry door, a support rod 2 arranged between the two semicircular rings 11 is used for supporting the water sealing ring 1, the radius of the water sealing ring 1 is adjusted, and the gap between the water sealing ring 1 and the inner wall of the pressure steel pipe is further adjusted;
the water inlet 33 is positioned at the bottom of the semicircular ring 11, and the air outlet 34 is positioned at the top of the semicircular ring 11. And the water inlet and the air exhaust are convenient.
A water inlet valve 35 is arranged at the water inlet 33, and an exhaust valve 36 is arranged at the exhaust port 34.
And a test pressure gauge 37 is arranged on the water sealing ring 1. The pressure in the water injection cavity is accurately read through the test pressure gauge 37, so that the pressure monitoring in the test process is facilitated. The accuracy of the testing pressure gauge 37 is not lower than 1.6 grade.
The outlet of the booster pump 42 is provided with a water supply valve, a drain valve and a booster pump pressure gauge 43. The pressure pump 42 is a manual pressure pump. Open the feed valve when suppressing, make rivers flow into the water injection chamber, close during the pressurize, prevent that manual force (forcing) pump is sealed not tight, cause pressure drop, influence the experimental result. The drain valve is arranged for pressure relief after pressure maintaining is finished. The pressure gauge 43 of the pressure pump with the setting precision not lower than 1.6 grade is used for comparing with the number of the pressure gauge 37 on the water sealing ring 1.
The working process is as follows:
1. the two semicircular rings 11 are conveyed to the interior of the pressure steel pipe through the volute entrance door to form the water sealing ring 1 of an integral circular ring, two sealing rings are arranged in the sealing groove 32, and then the supporting rod 2 in the middle of the water sealing ring 1 is installed. The water sealing ring 1 is abutted against the joint of the flange surface on the inner side of the pressure steel pipe, the joint is ensured to be positioned between two seals of the water sealing ring 1, then the support rod 2 is rotated to expand the water sealing ring 1, the sealing ring is compressed by 4-5mm, and a 0.02mm feeler gauge is used for drawing a ring on the inner wall of the sealing ring and the inner wall of the pressure steel pipe to ensure that no gap exists between the sealing ring and the pressure steel pipe;
2. connecting a manual pressure pump with a water inlet 33 at the bottom of the water sealing ring 1 through a rubber hose 41, closing a drain valve at the outlet of the manual pressure pump, opening a water supply valve, enabling a test medium to enter a water injection cavity between the flange surface and the water sealing ring 1 through the rubber hose 41 after the manual pressure pump operates, and ensuring that an exhaust valve 36 at the top of the water sealing ring 1 is in an open state at the initial stage of pressurization so as to exhaust air in a cavity between the flange surface and the water sealing ring 1;
3. before pressing, checking that the reading of a test pressure gauge 37 arranged on the water sealing ring 1 is zero;
4. starting to pressurize, slowly pressing the manual pressurizing pump, after water flows out of the exhaust valve 36, proving that all air in the cavity is exhausted, closing the exhaust valve 36, and continuing to pressurize;
5. continuing to press the manual pressure pump, when the pressure gauge 37 to be tested and the pressure gauge 43 of the pressure pump both display that the test pressure reaches 1.5 times of the working pressure, closing the water supply valve, stopping pressing the manual pressure pump for pressure maintaining, and recording the current time and the reading of the current test pressure gauge 37;
6. and reading the reading of the test pressure gauge 37 at the moment after the test is finished, and if the reading of the test pressure gauge 37 is not changed during the pressure maintaining period, the sealing of the flange connecting surface is not damaged.
The details of the present invention are not described in the prior art, and therefore, are not specifically described herein.
Claims (7)
1. The utility model provides a pressure steel pipe flange face pressure test device which characterized in that: including the water seal ring (1) that constitutes by two semicircle rings (11), be equipped with bracing piece (2) between two semicircle rings (11), be equipped with recess (31) and seal groove (32) on the contact surface that water seal ring (1) and pressure steel pipe inner flange face contacted, form inclosed water injection chamber between recess (31) and the flange face, seal groove (32) are located the both sides of recess (31), be equipped with the sealing ring in seal groove (32), be equipped with water inlet (33) and gas vent (34) with recess (31) intercommunication on one of them semicircle ring (11), water inlet (33) are connected with basin (4) through rubber hose (41) and force (forcing) pump (42).
2. The pressure steel pipe flange face pressure test device of claim 1, characterized in that: the water inlet (33) is positioned at the bottom of the semicircular ring (11), and the air outlet (34) is positioned at the top of the semicircular ring (11).
3. The pressure steel pipe flange face pressure test device of claim 1, characterized in that: a water inlet valve (35) is arranged at the water inlet (33), and an exhaust valve (36) is arranged at the exhaust port (34).
4. The pressure steel pipe flange face pressure test device of claim 1, characterized in that: and a test pressure gauge (37) is arranged on the water sealing ring (1).
5. The pressure steel pipe flange face pressure test device of claim 1, characterized in that: the two ends of the support rod (2) are provided with threaded holes, one side of the semicircular ring (11) facing the support rod (2) is provided with a threaded column (12), the thread directions of the two threaded columns (12) are opposite, and the support rod (2) is connected with the threaded column (12) through the threaded holes.
6. The pressure steel pipe flange face pressure test device of claim 1, characterized in that: and a water supply valve, a drain valve and a pressure gauge (43) of the booster pump are arranged at the outlet of the booster pump (42).
7. The pressure steel pipe flange face pressure test device of claim 1, characterized in that: two ends of one semicircular ring (11) are provided with clamping sleeves (13), a sealing gasket is arranged in each clamping sleeve (13), two ends of the other semicircular ring (11) are provided with clamping heads (14) clamped with the clamping sleeves (13), and grooves (31) formed after the two semicircular rings (11) are spliced are communicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121645841.XU CN215004749U (en) | 2021-07-19 | 2021-07-19 | Pressure steel pipe flange face pressure test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121645841.XU CN215004749U (en) | 2021-07-19 | 2021-07-19 | Pressure steel pipe flange face pressure test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215004749U true CN215004749U (en) | 2021-12-03 |
Family
ID=79123397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121645841.XU Expired - Fee Related CN215004749U (en) | 2021-07-19 | 2021-07-19 | Pressure steel pipe flange face pressure test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215004749U (en) |
-
2021
- 2021-07-19 CN CN202121645841.XU patent/CN215004749U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211203 |