CN115096523A - Welding type low-temperature valve testing device - Google Patents
Welding type low-temperature valve testing device Download PDFInfo
- Publication number
- CN115096523A CN115096523A CN202210695948.8A CN202210695948A CN115096523A CN 115096523 A CN115096523 A CN 115096523A CN 202210695948 A CN202210695948 A CN 202210695948A CN 115096523 A CN115096523 A CN 115096523A
- Authority
- CN
- China
- Prior art keywords
- ring
- valve
- wall
- sealing ring
- blind plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 113
- 238000005493 welding type Methods 0.000 title abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 88
- 238000011084 recovery Methods 0.000 claims description 23
- 238000011056 performance test Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 87
- 239000001307 helium Substances 0.000 description 10
- 229910052734 helium Inorganic materials 0.000 description 10
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2876—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/115—Caps
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Architecture (AREA)
- Fluid Mechanics (AREA)
- Details Of Valves (AREA)
Abstract
The invention relates to the field of valve performance tests, in particular to a welded type low-temperature valve test device which comprises a blind plate, an inner wall inflatable sealing ring and an outer wall sealing ring; a valve port annular groove is formed in one end face of the blind plate, and the inner wall inflatable sealing ring and the outer wall sealing ring are respectively arranged in different sealing ring annular grooves; the valve port annular groove is matched with a valve port of the tested valve, and the blind plate is provided with an inflation hole for communicating the inner wall inflation sealing ring with the tested valve. The invention has the beneficial effects that: in the welding type low-temperature valve testing device provided by the invention, test gas is filled into a tested valve, so that an inflation sealing ring on the inner wall is expanded; the sealing performance of the inner wall inflatable sealing ring is improved, the inner wall inflatable sealing ring and the outer wall sealing ring are matched to realize two-layer sealing, and the serious test gas leakage caused by the simultaneous failure of the inner wall inflatable sealing ring and the outer wall sealing ring is avoided.
Description
Technical Field
The invention relates to the field of valve performance tests, in particular to a welding type low-temperature valve test device.
Background
The cryogenic valve is mainly used for devices such as cryogenic tanks of liquid oxygen, liquid nitrogen, liquid argon and carbon dioxide, tank cars and the like, and output liquid cryogenic media such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, liquefied petroleum products and the like generally have the characteristics of flammability and explosiveness, so that the cryogenic valve has higher requirements on sealing performance under the low-temperature condition.
In the test process of the low-temperature valve, the whole performance of the tested valve needs to be tested under the low-temperature condition, and because the low-temperature valve is usually welded and installed on a storage tank and a tank car, a detachable blind plate is used for sealing a valve port of the tested valve; then, the high-pressure test gas is filled into the tested valve, and the leakage amount of the test gas is recorded to judge the performance of the tested valve.
However, the sealing performance of the blind plate in the prior art to the valve port is not good, and the performance test of the low-temperature valve is influenced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a welding formula cryogenic valve test device, solves the leakproofness problem of being examined the valve in the cryogenic test process.
In order to solve the technical problems, the invention adopts a technical scheme that: a welded low-temperature valve test device comprises a blind plate, an inner wall inflatable sealing ring and an outer wall sealing ring;
a valve port annular groove is formed in one end face of the blind plate, two sealing ring annular grooves are formed in the groove wall of the valve port annular groove, and the inner wall inflatable sealing ring and the outer wall sealing ring are respectively arranged in different sealing ring annular grooves; the valve port annular groove is matched with a valve port of the tested valve, the inner wall inflatable sealing ring is abutted against the inner wall of the valve port of the tested valve, and the outer wall sealing ring is abutted against the outer wall of the valve port of the tested valve; and the blind plate is provided with an inflation hole for communicating the inner wall inflation sealing ring with the tested valve.
The test device further comprises a test groove, wherein lifting lugs are arranged on the circumferential surface of the blind plate, and lifting hooks are arranged on the test groove.
The valve port annular groove is formed in the valve port, the valve port annular groove is formed in the valve port annular groove, and the valve port annular groove is formed in the valve port annular groove.
Further, the device also comprises a gas pipe joint, a bubble counter and a flow meter; the blind plate is provided with a test gas through hole, the gas pipe joint is communicated with the gas through hole at one side of the gas through hole, which is far away from the valve port annular groove, and the gas pipe joint, the bubble counter and the flowmeter are sequentially communicated.
The bubble counter is connected with the air pipe joint through the gas pipeline, one end of the recovery pipeline is communicated with the test gas storage tank, the other end of the recovery pipeline is communicated with the gas pipeline through the recovery pump, and the heater is arranged in the recovery pipeline.
Further, the section of the valve port annular groove is triangular.
The device further comprises a blind plate locking ring and a bolt assembly, wherein the blind plate locking ring is sleeved on the tested valve, and the bolt assembly penetrates through the blind plate locking ring and the blind plate to clamp the blind plate locking ring and the blind plate.
Further, the blind plate locking ring is a double-locking type blind plate locking ring;
the locking ring comprises two locking semi-ring bodies, each locking semi-ring body comprises a front end surface and a back end surface, a first internal corner is formed on the front end surface of one side of each locking semi-ring body, and a second internal corner is formed on the back end surface of the other side of each locking semi-ring body;
the first internal corners of the two interlocking half-ring bodies are attached to each other, and the second internal corners of the two interlocking half-ring bodies are attached to each other.
Further, the blind plate locking ring is a hooking type blind plate locking ring;
the formula of colluding blind plate catch includes two formula of colluding semicircles, the border of formula of colluding semicircles is Zhan's formula car hook shape, two collude formula semicircles in order to Zhan's formula car hooked border joint each other of formula.
Further, the blind plate locking ring is a cutting sleeve type blind plate locking ring;
the clamping sleeve type blind plate locking ring comprises two clamping sleeve type semi-ring bodies and an annular clamping sleeve, wherein a semi-annular groove is formed in each clamping sleeve type semi-ring body, the semi-annular grooves of the two clamping sleeve type semi-ring bodies are mutually butted, and the annular clamping sleeve is clamped in the two semi-annular grooves.
The invention has the beneficial effects that: in the welding type low-temperature valve testing device provided by the invention, the valve port annular groove is matched with the shape of the valve port of the tested valve; when the tested valve is pressed in the annular groove of the valve port, test gas is filled into the tested valve, and the test gas tends to flow into the inner wall inflatable sealing ring from the inflatable hole, so that the inner wall inflatable sealing ring is expanded; because the valve port of the tested valve is attached to the groove wall of the valve port annular groove, the resistance of the test gas reaching the outer part of the inner wall inflatable sealing ring is far greater than the resistance of the test gas entering the inner wall inflatable sealing ring from the inflatable hole. After the inner wall inflatable sealing ring expands, the sealing performance of the inner wall inflatable sealing ring is improved, and the inner wall inflatable sealing ring and the outer wall sealing ring are matched to realize two-layer sealing, so that the two layers of sealing are prevented from losing efficacy at the same time. The welded low-temperature valve test device provided by the invention realizes self-sealing and two-layer, the higher the pressure of the tested gas in the tested valve is, the better the sealing performance of the blind plate is, and the outer wall sealing ring pocket bottom is arranged, so that the fault tolerance rate of the sealed tested valve is improved; effectively solves the problem of tightness of a low-temperature valve test.
Drawings
FIG. 1 is a schematic diagram of an overall schematic of a welded cryovalve testing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a tested valve structure of a welded cryogenic valve testing apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a blind plate structure of a welded cryovalve testing apparatus according to an embodiment of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3 according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a locking ring structure of a locking blind plate of a welding-type cryogenic valve testing apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a hook-up type blind plate locking ring structure of a welding type cryogenic valve testing apparatus according to an embodiment of the present invention;
fig. 7 is a schematic view of a ferrule type blind plate lock ring structure of a welding type cryogenic valve testing apparatus according to an embodiment of the present invention;
description of reference numerals:
1. a blind plate; 11. a valve port annular groove; 12. a sealing ring annular groove; 13. an inflation hole; 14. lifting lugs; 15. a gas through hole;
2. an inner wall is inflated with a sealing ring; 3. an outer wall sealing ring; 4. a tested valve; 5. a gas pipe joint; 6. a test gas storage tank; 7. a bubble counter; 8. a flow meter; 9. a gas line; 100. a recovery pipeline; 101. a heater;
102. locking the lock type blind plate locking ring; 1021. a locking half-ring body; 1022. a first internal corner; 1023. a second internal corner;
103. a hooked blind plate locking ring; 1031. a hook-up type hemicycle body;
104. a cutting sleeve type blind plate locking ring; 1041. a ferrule type half-ring body; 1042. an annular ferrule;
105. and (4) a test tank.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 7, an embodiment of the present invention provides a welded cryogenic valve testing apparatus, including a blind plate 1, an inner wall inflatable sealing ring 2, and an outer wall sealing ring 3;
a valve port annular groove 11 is formed in one end face of the blind plate 1, two sealing ring annular grooves 12 are formed in the groove wall of the valve port annular groove 11, and the inner wall inflatable sealing ring 2 and the outer wall sealing ring 3 are respectively arranged in different sealing ring annular grooves 12; the valve port annular groove 11 is matched with a valve port of the tested valve 4, the inner wall inflatable sealing ring 2 is abutted against the inner wall of the valve port of the tested valve 4, and the outer wall sealing ring 3 is abutted against the outer wall of the valve port of the tested valve 4; and the blind plate 1 is provided with an inflation hole 13 for communicating the inner wall inflation sealing ring 2 with the tested valve 4.
As can be seen from the above description, the beneficial effects of the present invention are: in the welding type low-temperature valve testing device provided by the invention, the valve port annular groove 11 is matched with the valve port shape of the tested valve 4; when the tested valve 4 is pressed in the valve port annular groove 11, test gas is filled into the tested valve 4, and the test gas tends to flow into the inner wall inflatable sealing ring 2 from the inflating hole 13, so that the inner wall inflatable sealing ring 2 is expanded; because the valve port of the tested valve 4 is attached to the groove wall of the valve port annular groove 11, the resistance of the test gas reaching the outer part of the inner wall inflatable sealing ring 2 is far larger than the resistance of the test gas entering the inner wall inflatable sealing ring 2 from the inflating hole 13. After the inner wall inflatable seal ring 2 is expanded, the sealing performance of the inner wall inflatable seal ring 2 is improved, and the inner wall inflatable seal ring 2 is matched with the outer wall seal ring 3 to realize two-layer sealing, so that the serious test gas leakage caused by the simultaneous failure of the inner wall inflatable seal ring and the outer wall seal ring is avoided. The welding type low-temperature valve test device provided by the invention realizes self-sealing and two layers, the higher the pressure of the tested gas in the tested valve 4 is, the better the sealing performance of the blind plate 1 is, and the outer wall sealing ring 3 is arranged at the bottom, so that the fault tolerance of the sealed tested valve 4 is improved; the problem of tightness of a low-temperature valve test is effectively solved.
Further, the test device also comprises a test groove 105, wherein lifting lugs 14 are arranged on the circumferential surface of the blind plate 1, and a lifting hook is arranged on the test groove 105.
As can be seen from the above description, the tested valve 4 is arranged in the test groove 105, and the lifting lug 14 and the lifting hook facilitate the placement of the detached blind plate 1.
Further, the valve port ring-shaped groove blind plate device further comprises a gas pipe joint 5 and a test gas storage tank 6, a test gas through hole 15 is formed in the blind plate 1, the gas pipe joint 5 is communicated with the gas through hole 15 on one side, away from the valve port ring-shaped groove 11, of the gas through hole 15, and the test gas storage tank 6 is communicated with the gas pipe joint 5.
From the above description, the test gas passes from the test gas tank 6 through the blind plate 1 into the valve 4 under test.
Further, the device also comprises a gas pipe joint 5, a bubble counter 7 and a flowmeter 8; the blind plate 1 is provided with a test gas through hole 15, the gas pipe joint 5 is communicated with the gas through hole 15 at one side of the gas through hole 15, which is far away from the valve port annular groove 11, and the gas pipe joint 5, the bubble counter 7 and the flowmeter 8 are communicated in sequence.
As can be seen from the above description, the test gas is output from the tested valve 4 through the test gas through hole 15 of the blind plate 1 to the bubble counter 7 and the flow meter 8, and the data displayed by the bubble counter 7 and the flow meter 8 is used for estimating the leakage amount of the test gas of the tested valve 4.
Further, still include test gas storage tank 6, gas line 9, recovery pipeline 100, recovery pump and heater 101, bubble counter 7 passes through gas line 9 intercommunication air pipe connector 5, 100 one end intercommunication test gas storage tank 6 of recovery pipeline, the other end passes through recovery pump intercommunication gas line 9, heater 101 sets up in recovery pipeline 100.
As can be seen from the above description, the cryogenic valve performance test specifies that two test gases are used for the test, the test gases include nitrogen and helium, after the helium is used, the helium is scavenged by using the nitrogen, and the helium is pumped into the recovery pipeline 100 by the recovery pump and then recovered into the test gas storage tank 6;
the heater 101 heats the helium gas cooled in the test bath 105 in the recovery line 100, so as to prevent the helium gas from being heated by the room temperature in the test gas storage tank 6 to be expanded, thereby preventing the test gas storage tank 6 from being damaged.
Further, the valve port annular groove 11 has a triangular cross section.
As can be seen from the above description, the valve port annular groove 11 is adapted to the valve port shape of the tested valve 4 and has a triangular cross section.
Further, the blind plate locking ring and the bolt assembly are further included, the blind plate locking ring is sleeved on the tested valve 4, and the bolt assembly penetrates through the blind plate locking ring and the blind plate 1 to be clamped with the blind plate locking ring and the blind plate 1.
From the above description, the above arrangement provides a simple and efficient detachable structure of the blind plate 1, and the time-sharing valve has an adjusting surface to clamp the blind plate locking ring, so as to prevent the blind plate locking ring from moving towards the blind plate 1.
Further, the blind plate locking ring is a double-locking type blind plate locking ring 102;
the pair of locking type blind plate lock rings 102 comprises two pair of locking type half ring bodies 1021, each pair of locking type half ring bodies 1021 comprises a front end face and a back end face, a first internal corner 1022 is formed in the front end face of one side of each pair of locking type half ring bodies 1021, and a second internal corner 1023 is formed in the back end face of the other side of each pair of locking type half ring bodies 1021;
the first internal corners 1022 of the two locking half-ring bodies 1021 are attached to each other, and the second internal corners 1023 of the two locking half-ring bodies 1021 are attached to each other.
As can be seen from the above description, the blind lock ring must be configured as two half-rings to be installed on the tested valve 4, and the first internal corner 1022 and the second internal corner 1023 of the locking half-ring 1021 are in staggered overlapping and plane fit, so that the two locking half-rings 1021 are prevented from being separated by the blind plate 1 at the butt joint. The structural stability of the welding type low-temperature valve testing device is improved.
Further, the blind plate locking ring is a hook-up type blind plate locking ring 103;
the formula of colluding blind plate catch ring 103 includes two formula of colluding semicircles 1031, the border of formula of colluding semicircles 1031 is jensed formula car and colludes like, two formula of colluding semicircles 1031 in order to jensed formula car hookup's border joint each other.
As can be seen from the above description, the hook-up type blind plate locking ring 103 prevents the middle part from being propped open by the blind plate 1.
Further, the blind plate locking ring is a ferrule type blind plate locking ring 104;
the ferrule type blind plate locking ring 104 comprises two ferrule type half ring bodies 1041 and an annular ferrule 1042, wherein a half annular groove is formed in the ferrule type half ring body 1041, the half annular grooves of the two ferrule type half ring bodies 1041 are mutually butted, and the annular ferrule 1042 is clamped in the two half annular grooves.
As can be seen from the above description, the ferrule type blind flange lock ring 104 uses the annular ferrule 1042 to reinforce the connection between the two ferrule type half ring bodies 1041, so as to prevent the middle portion of the ferrule type blind flange lock ring 104 from being opened by the blind flange 1.
The application scene of the welding type low-temperature valve testing device provided by the invention is as follows: when testing the performance of a cryogenic valve requires a good seal to be made with the valve 4 under test.
Example one
Referring to fig. 1-7, a welded cryogenic valve testing device includes a blind plate 1, an inner wall inflatable seal ring 2 and an outer wall seal ring 3;
a valve port annular groove 11 is formed in one end face of the blind plate 1, two sealing ring annular grooves 12 are formed in the groove wall of the valve port annular groove 11, and the inner wall inflatable sealing ring 2 and the outer wall sealing ring 3 are respectively arranged in different sealing ring annular grooves 12; the valve port annular groove 11 is matched with a valve port of the tested valve 4, the inner wall inflating seal ring 2 is abutted against the inner wall of the valve port of the tested valve 4, and the outer wall seal ring 3 is abutted against the outer wall of the valve port of the tested valve 4; and the blind plate 1 is provided with an inflation hole 13 for communicating the inner wall inflation sealing ring 2 with the tested valve 4.
The welded type low-temperature valve testing device further comprises a gas pipe joint 5, a test gas storage tank 6, a test groove 105, a blind plate locking ring, a bolt assembly, the test gas storage tank 6, a gas pipeline 9, a recovery pipeline 100, a recovery pump, a heater 101, a bubble counter 7 and a flow meter 8.
Lifting lugs 14 are arranged on the circumferential surface of the blind plate 1, and lifting hooks are arranged on the test groove 105.
The blind plate 1 is provided with a test gas through hole 15, the gas pipe joint 5 is communicated with the gas through hole 15 at one side of the gas through hole 15, which is far away from the valve port annular groove 11, and the test gas storage tank 6 is communicated with the gas pipe joint 5.
The blind plate 1 is provided with a test gas through hole 15, the gas pipe joint 5 is communicated with the gas through hole 15 at one side of the gas through hole 15, which is far away from the valve port annular groove 11, and the gas pipe joint 5, the bubble counter 7 and the flowmeter 8 are communicated in sequence.
The section of the valve port annular groove 11 is triangular.
The blind plate locking ring is sleeved on the tested valve 4, and the bolt assembly penetrates through the blind plate locking ring and the blind plate 1 to be clamped with the blind plate locking ring and the blind plate 1.
The blind plate locking ring is a double-locking type blind plate locking ring 102;
the pair of locking type blind plate lock rings 102 comprises two pair of locking type half ring bodies 1021, each pair of locking type half ring bodies 1021 comprises a front end face and a back end face, a first internal corner 1022 is formed in the front end face of one side of each pair of locking type half ring bodies 1021, and a second internal corner 1023 is formed in the back end face of the other side of each pair of locking type half ring bodies 1021;
the first internal corners 1022 of the two locking half-ring bodies 1021 are attached to each other, and the second internal corners 1023 of the two locking half-ring bodies 1021 are attached to each other.
The use and the principle of the welding type low-temperature valve test device provided by the invention are as follows:
in the performance test of the low-temperature valve, a tested valve is arranged in a test tank of the welding type low-temperature valve test device, a refrigerant medium is filled into the test tank, the lower part of the tested valve is immersed into the refrigerant medium for cooling, and sensors are arranged at various positions in the tested valve for judging whether the tested valve is cooled to a specified temperature.
After the tested valve is cooled, the test gas is filled into the tested valve, and the blind plate is arranged at the valve port, so that the sealing performance of the valve port of the tested valve is ensured, and the leakage amount of the test gas can accurately reflect the sealing performance of the tested valve.
After the tested valve is pressed in the annular groove of the valve port, test gas is filled into the tested valve, and the test gas tends to flow into the inner wall inflatable sealing ring from the inflatable hole, so that the inner wall inflatable sealing ring is expanded; because the valve port of the tested valve is attached to the groove wall of the valve port annular groove, the resistance of the test gas reaching the outer part of the inner wall inflatable sealing ring is far greater than the resistance of the test gas entering the inner wall inflatable sealing ring from the inflatable hole. After the inner wall inflatable sealing ring expands, the sealing performance of the inner wall inflatable sealing ring is improved, and the inner wall inflatable sealing ring and the outer wall sealing ring are matched to realize two-layer sealing, so that the two layers of sealing are prevented from losing efficacy at the same time.
After the test gas is filled into the tested valve for a period of time, the test gas is output to the bubble counter and the flowmeter from the gas pipeline, so that the leakage amount of the test gas can be calculated by a worker.
The performance test of the low-temperature valve stipulates that two test gases are used, namely nitrogen and helium; after part of helium is used, the helium is recycled into the test gas storage tank by the recycling pipeline, so that the helium waste is avoided.
The blind plate is connected with the tested valve by a flange plate, specifically a blind plate locking ring on the tested valve;
the blind plate locking ring comprises a locking type blind plate locking ring, a cutting sleeve type blind plate locking ring and a hooking type blind plate locking ring; the half ring bodies of the blind plate locking rings of different types are different; the locking type blind plate locking ring and the hooking type blind plate locking ring have similar principles, the half ring bodies are prevented from being connected in an inserting or clamping mode, and the connection position of the half ring bodies is propped open by the blind plate; the clamping sleeve type blind plate locking ring uses the principle that an annular clamping sleeve is similar to a reinforcing rib, so that the connection strength of a semi-ring body is strengthened, and the connection part is prevented from being propped open by a blind plate.
The blind plate locking ring is arranged to enable the blind plate to be stably installed on the valve port of the tested valve.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (10)
1. A welded type low-temperature valve test device is characterized by comprising a blind plate, an inner wall inflatable sealing ring and an outer wall sealing ring;
a valve port annular groove is formed in one end face of the blind plate, two sealing ring annular grooves are formed in the groove wall of the valve port annular groove, and the inner wall inflatable sealing ring and the outer wall sealing ring are respectively arranged in different sealing ring annular grooves; the valve port annular groove is matched with a valve port of a tested valve, the inner wall inflating sealing ring is abutted against the inner wall of the valve port of the tested valve, and the outer wall sealing ring is abutted against the outer wall of the valve port of the tested valve; and the blind plate is provided with an inflation hole for communicating the inner wall inflation sealing ring with the tested valve.
2. The welded type cryogenic valve test device of claim 1, further comprising a test tank, wherein lifting lugs are arranged on the circumferential surface of the blind plate, and lifting hooks are arranged on the test tank.
3. The welded cryogenic valve test device of claim 1, further comprising a gas pipe connector and a test gas storage tank, wherein the blind plate is provided with a test gas through hole, the gas pipe connector is communicated with the gas through hole on the side of the gas through hole away from the valve port annular groove, and the test gas storage tank is communicated with the gas pipe connector.
4. The welded cryovalve testing apparatus of claim 1 further comprising a gas line connection, a bubble counter, and a flow meter; the blind plate is provided with a test gas through hole, the gas pipe joint is communicated with the gas through hole at one side of the gas through hole, which is far away from the valve port annular groove, and the gas pipe joint, the bubble counter and the flowmeter are sequentially communicated.
5. The welded cryogenic valve test device of claim 4, further comprising a test gas storage tank, a gas pipeline, a recovery pump and a heater, wherein the bubble counter is connected with the gas pipe joint through the gas pipeline, one end of the recovery pipeline is communicated with the test gas storage tank, the other end of the recovery pipeline is communicated with the gas pipeline through the recovery pump, and the heater is arranged in the recovery pipeline.
6. The welded cryovalve testing apparatus of claim 1 wherein the valve port annular groove is triangular in cross-section.
7. The welded cryogenic valve test rig of claim 1, further comprising a blind lock ring disposed over the valve under test and a bolt assembly extending through the blind lock ring and the blind to clamp the blind lock ring and the blind.
8. The welded cryogenic valve test rig of claim 7, wherein the blind lock ring is a double lock blind lock ring;
the locking ring comprises two locking semi-ring bodies, each locking semi-ring body comprises a front end surface and a back end surface, a first internal corner is formed on the front end surface of one side of each locking semi-ring body, and a second internal corner is formed on the back end surface of the other side of each locking semi-ring body;
the first internal corners of the two locking type semi-ring bodies are attached to each other, and the second internal corners of the two locking type semi-ring bodies are attached to each other.
9. The welded cryogenic valve test rig of claim 7, wherein the blind lock ring is a hook-up blind lock ring;
the hooking type blind plate lock ring comprises two hooking type semi-ring bodies, the edge of each hooking type semi-ring body is in a shape like a jeans hook, and the hooking type semi-ring bodies are mutually clamped at the edge of the jeans hook.
10. The welded cryogenic valve test rig of claim 7, wherein the blind lock ring is a ferrule type blind lock ring;
the clamping sleeve type blind plate locking ring comprises two clamping sleeve type semi-ring bodies and an annular clamping sleeve, wherein a semi-annular groove is formed in each clamping sleeve type semi-ring body, the semi-annular grooves of the two clamping sleeve type semi-ring bodies are mutually butted, and the annular clamping sleeve is clamped in the two semi-annular grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210695948.8A CN115096523A (en) | 2022-06-20 | 2022-06-20 | Welding type low-temperature valve testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210695948.8A CN115096523A (en) | 2022-06-20 | 2022-06-20 | Welding type low-temperature valve testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115096523A true CN115096523A (en) | 2022-09-23 |
Family
ID=83290632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210695948.8A Pending CN115096523A (en) | 2022-06-20 | 2022-06-20 | Welding type low-temperature valve testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115096523A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116481742A (en) * | 2023-06-21 | 2023-07-25 | 佛山市天禄智能装备科技有限公司 | Lithium battery rotary kiln sealing leakage detection system and method |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10029971A1 (en) * | 2000-06-26 | 2002-01-10 | Wilhelm Hueselmann | Device for securing detachable connection against unauthorised release comprises ring element with two halves fitting together over connecting element and lockable by elastic expanding arm with step |
| CN1825081A (en) * | 2006-03-28 | 2006-08-30 | 保一集团有限公司 | Low temp. valve performance measuring system based on computer data acquiring |
| CN2852090Y (en) * | 2005-12-26 | 2006-12-27 | 保一集团有限公司 | Low-temperature valve testing device based on computer data acquisition |
| CN201344185Y (en) * | 2008-12-23 | 2009-11-11 | 东莞市柏特机械制造有限公司 | Snap ring type hinge shaft locking device |
| CN101995329A (en) * | 2009-08-11 | 2011-03-30 | 雷利国 | Energy-saving multilevel pressure self-complementing type sealing blind flange for valve test |
| CN203098851U (en) * | 2013-01-29 | 2013-07-31 | 山东交通学院 | Blind plate |
| CN203629772U (en) * | 2013-11-20 | 2014-06-04 | 天津百利展发集团有限公司 | Clamp valve pressure test blind plate structure |
| CN105179720A (en) * | 2015-10-23 | 2015-12-23 | 天津市华顺通阀门有限公司 | Blind plate for high-pressure testing of valve |
| CN106989871A (en) * | 2017-05-13 | 2017-07-28 | 山东益都阀门集团股份有限公司 | Valve pressure test device |
| CN110375926A (en) * | 2019-07-26 | 2019-10-25 | 福建省特种设备检验研究院 | A kind of valve socket welding end pressure testing sealing structure and its pressure-measuring method |
| CN210375684U (en) * | 2019-08-16 | 2020-04-21 | 天津翔越电仪技术有限公司 | Valve pressing test device for welding connection |
| CN211377510U (en) * | 2020-04-02 | 2020-08-28 | 北京实耐固连接技术有限公司 | Corrugated pipe support |
| CN113029551A (en) * | 2021-04-13 | 2021-06-25 | 特技阀门集团有限公司 | Ultralow temperature valve test device |
| CN213600350U (en) * | 2020-11-09 | 2021-07-02 | 浙江特工阀门有限公司 | Ultra-low temperature valve test groove |
-
2022
- 2022-06-20 CN CN202210695948.8A patent/CN115096523A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10029971A1 (en) * | 2000-06-26 | 2002-01-10 | Wilhelm Hueselmann | Device for securing detachable connection against unauthorised release comprises ring element with two halves fitting together over connecting element and lockable by elastic expanding arm with step |
| CN2852090Y (en) * | 2005-12-26 | 2006-12-27 | 保一集团有限公司 | Low-temperature valve testing device based on computer data acquisition |
| CN1825081A (en) * | 2006-03-28 | 2006-08-30 | 保一集团有限公司 | Low temp. valve performance measuring system based on computer data acquiring |
| CN201344185Y (en) * | 2008-12-23 | 2009-11-11 | 东莞市柏特机械制造有限公司 | Snap ring type hinge shaft locking device |
| CN101995329A (en) * | 2009-08-11 | 2011-03-30 | 雷利国 | Energy-saving multilevel pressure self-complementing type sealing blind flange for valve test |
| CN203098851U (en) * | 2013-01-29 | 2013-07-31 | 山东交通学院 | Blind plate |
| CN203629772U (en) * | 2013-11-20 | 2014-06-04 | 天津百利展发集团有限公司 | Clamp valve pressure test blind plate structure |
| CN105179720A (en) * | 2015-10-23 | 2015-12-23 | 天津市华顺通阀门有限公司 | Blind plate for high-pressure testing of valve |
| CN106989871A (en) * | 2017-05-13 | 2017-07-28 | 山东益都阀门集团股份有限公司 | Valve pressure test device |
| CN110375926A (en) * | 2019-07-26 | 2019-10-25 | 福建省特种设备检验研究院 | A kind of valve socket welding end pressure testing sealing structure and its pressure-measuring method |
| CN210375684U (en) * | 2019-08-16 | 2020-04-21 | 天津翔越电仪技术有限公司 | Valve pressing test device for welding connection |
| CN211377510U (en) * | 2020-04-02 | 2020-08-28 | 北京实耐固连接技术有限公司 | Corrugated pipe support |
| CN213600350U (en) * | 2020-11-09 | 2021-07-02 | 浙江特工阀门有限公司 | Ultra-low temperature valve test groove |
| CN113029551A (en) * | 2021-04-13 | 2021-06-25 | 特技阀门集团有限公司 | Ultralow temperature valve test device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116481742A (en) * | 2023-06-21 | 2023-07-25 | 佛山市天禄智能装备科技有限公司 | Lithium battery rotary kiln sealing leakage detection system and method |
| CN116481742B (en) * | 2023-06-21 | 2023-09-08 | 佛山市天禄智能装备科技有限公司 | Lithium battery rotary kiln sealing leakage detection system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115096523A (en) | Welding type low-temperature valve testing device | |
| CN106481922B (en) | A kind of self sealss cryogenic coupler | |
| CN210950412U (en) | Anti-leakage safety plugging device for pressure fluid pipeline | |
| CN206420620U (en) | One kind detection fuel tanker gas check | |
| CN202927468U (en) | Vacuum heat-insulating container and manhole structure thereof | |
| CN211602329U (en) | Pressure pipeline pressure detection device | |
| CN204647624U (en) | A kind of vacuum and low temperature sealing for tubing joints structure | |
| CN216349439U (en) | Caisson valve tightness detection device | |
| CN210221436U (en) | Subway vehicle air tightness test plugging tool | |
| CN216207314U (en) | Tightness detection device of high-pressure vessel head | |
| CN109029863A (en) | A kind of no case type heat exchanger pipe end tightness test device and method | |
| CN107478399A (en) | A kind of method that pressure testing is carried out to row's side of a ship outer tube | |
| CN214444020U (en) | Stainless steel pipeline welding argon filling device | |
| CN108151972A (en) | Large container end cap flange leakage detection method and its detection instrument | |
| CN214171943U (en) | Reinforcing device for butt joint of LNG (liquefied Natural gas) pipeline | |
| CN208417959U (en) | A kind of polymerization visor on-line pressure sealant device | |
| CN216433444U (en) | Detection device for box air tightness test | |
| CN218546066U (en) | Pipeline welding seam safety inspection device | |
| CN207007440U (en) | A kind of heat exchanger tube helium checking device | |
| CN218954603U (en) | Integral sleeve type forging high-pressure hydrogen storage container and hydrogen storage system | |
| CN112611525A (en) | Tightness test method for low-temperature pipeline of liquefied natural gas carrier | |
| CN213575883U (en) | Pipe cleaning valve | |
| CN219810595U (en) | Ship welding detection device | |
| CN213807589U (en) | Petroleum drilling and production union piece | |
| CN217101432U (en) | Special leaking stoppage stick tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |