CN205940949U - Low temperature valve pressure testing frock - Google Patents
Low temperature valve pressure testing frock Download PDFInfo
- Publication number
- CN205940949U CN205940949U CN201620864896.2U CN201620864896U CN205940949U CN 205940949 U CN205940949 U CN 205940949U CN 201620864896 U CN201620864896 U CN 201620864896U CN 205940949 U CN205940949 U CN 205940949U
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- pressure testing
- ring
- snap ring
- studs
- blind flange
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Abstract
The utility model relates to a low temperature valve pressure testing frock, snap ring, three ring -openings, octagon ring including stud, coaxial setting fill up and the pressure testing blind plate, interior threaded hole that stud one end was installed at the snap ring, and the stud other end passes the through -hole A of pressure testing blind plate to it is fixed through hexagon nut, the ring channel A who has with three ring -opening adaptations is opened to the snap ring on the terminal surface of pressure testing blind plate, the pressure testing blind plate is opened towards the terminal surface of snap ring has the octagon annular that fills up the adaptation with the octagon ring, and ring channel A is located the inner wall of snap ring, and stud has two at least, stud along the equidistant setting of circumferencial direction. The utility model discloses simple and practical installs and removes the convenience, lightens workman's intensity of labour, and is sealed reliable, has improved pressure testing efficiency, has solved the big difficult problem of welding ends low temperature valve low temperature pressure testing.
Description
Technical field
This utility model is related to valve technology field, more particularly, to a kind of Subzero valve structure for pressure test.
Background technology
The connecting mode of Subzero valve has：Flange end connection and welding ends connection.Subzero valve refers to operating temperature -29
Valve below DEG C, pumped (conveying) medium temperature is -29 DEG C～-196 DEG C, and discharge pressure reaches as high as 45MPa, valve during low-temperature test
Put in low-temperature test groove, the mixing liquid of spray liquid nitrogen or liquid nitrogen and ethanol, to obtain different temperature, detects in valve
Portion reaches and starts during test temperature to test pressure testing, and welding ends cannot ensure sealing at low temperature using O-ring seals sealing
Can, low temperature resistant O-ring seals operating temperature is higher than -70 DEG C, cannot be adopted at this stage using O-ring seals sealing less than -70 DEG C
The mode that welding ends welds pressure testing head tests pressure testing, and test loading test effect is guaranteed, and Subzero valve valve body is sealed with pressure testing
Head material is rustless steel, and during welding pressure testing head, welding job amount is big, high to workman's solder technology level requirement, it is necessary to assure weldering
Seam zero defect, affects the Subzero valve welding ends mechanical property of materials, must slice off pressure testing head and re-work welding after pressure testing is qualified
End, efficiency is low.
Utility model content
This utility model aims to provide Subzero valve structure for pressure test, the Subzero valve of energy effectively solving welding ends connecting mode
The difficult problem of pressure testing.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is as follows：
A kind of Subzero valve structure for pressure test, the snap ring including studs, being coaxially disposed, three open loops, anistree shape ring pad and
PRESSURE TESTING BLIND FLANGE, described studs one end is arranged in the internal thread hole of snap ring, and the studs other end passes through PRESSURE TESTING BLIND FLANGE
Through hole A, and fixed by hex nut, hex nut is located at PRESSURE TESTING BLIND FLANGE outer end；Described snap ring is towards the end face of PRESSURE TESTING BLIND FLANGE
On have the cannelure A being adapted to three open loops, described PRESSURE TESTING BLIND FLANGE is had and is adapted to anistree shape ring pad towards the end face of snap ring
Octagonal annular groove, described cannelure A is located on the inwall of snap ring, described studs at least two, and studs is circumferentially
Direction is arranged at equal intervals.
Further, Subzero valve structure for pressure test also includes gasket ring and fastening screw nut, described gasket ring be located in snap ring with
Between PRESSURE TESTING BLIND FLANGE, described studs passes through the through hole B on gasket ring, and described gasket ring and snap ring are compressed by fastening screw nut, and
Jack panel is threadeded with studs.
Further, the end face of described PRESSURE TESTING BLIND FLANGE has the counter sink being adapted to fastening screw nut.
Further, the end face of described gasket ring is had the cannelure B being adapted to three open loops.
Further, described internal thread hole is through hole.
Further, described studs has 4.
Further, described studs has 12.
Compared with prior art, this utility model has the advantages that：
This utility model is simple and practical, is convenient to mount and dismount, and mitigates the labor intensity of workman, sealed reliable, improves pressure testing effect
Rate, solves the hang-up of welding ends Subzero valve low temperature pressure testing.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the front view of snap ring in this utility model；
Fig. 3 is the left view of snap ring in this utility model；
Fig. 4 is the front view of gasket ring in this utility model；
Fig. 5 is the left view of gasket ring in this utility model；
Fig. 6 is the sectional view of PRESSURE TESTING BLIND FLANGE in this utility model；
Fig. 7 is the left view of PRESSURE TESTING BLIND FLANGE in this utility model；
Fig. 8 is the sectional view of three open loops in this utility model；
Fig. 9 is the left view of three open loops in this utility model；
Figure 10 is that this utility model is arranged on the structural representation on valve；
In figure：1- snap ring, 2- tri- open loop, 3- gasket ring, 4- fastening screw nut, 5- studs, 6- hex nut, 7- octagonal
Ring pad, 8- PRESSURE TESTING BLIND FLANGE, 9- valve, 11- internal thread hole, 12- cannelure A, 21- cut-off lines, 31- through hole B, 32- cannelure B,
81- octagonal annular groove, 82- through hole A, 83- counter sink.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing, to this reality
It is further elaborated with new.
As shown in figure 1, Subzero valve structure for pressure test disclosed in this utility model, including studs 5, the card that is coaxially disposed
Ring 1, three open loops 2, anistree shape ring pad 7 and PRESSURE TESTING BLIND FLANGE 8, studs 5 one end is arranged in the internal thread hole 11 of snap ring 1, double
Header stud 5 other end passes through the through hole A82 of PRESSURE TESTING BLIND FLANGE 8, and fixing by hex nut 6, and hex nut 6 is located at PRESSURE TESTING BLIND FLANGE
8 outer ends.As shown in Figure 2,3, snap ring 1 has, towards on the end face of PRESSURE TESTING BLIND FLANGE 8, the cannelure A12 being adapted to three open loops 2, such as schemes
6th, shown in 7, PRESSURE TESTING BLIND FLANGE 8 has the octagonal annular groove 81 being adapted to anistree shape ring pad 7, cannelure A12 towards the end face of snap ring 1
On the inwall of snap ring 1, studs 5 at least two, studs 5 is along the circumferential direction arranged at equal intervals.Internal thread hole
11 is through hole.In order to formula connects more firmly, studs 5 has 4.
Subzero valve structure for pressure test also includes gasket ring 3 and fastening screw nut 4, and gasket ring 3 is same to be located in snap ring 1 and PRESSURE TESTING BLIND FLANGE 8
Between, studs 5 passes through the through hole B31 on gasket ring 3, and snap ring 1 compressed by fastening screw nut 4 with gasket ring 3, fastening screw nut 4 and
Studs 5 is threaded.As shown in Figure 4,5, the end face of gasket ring 3 is had the cannelure B32 being adapted to three open loops 2, pressure testing
The counter sink 83 being adapted to fastening screw nut 4 is had on the end face of blind plate 8.
Subzero valve structure for pressure test material using rustless steel and carries out subzero treatment it is ensured that frock stablizing at low temperature
Property.The reliability that structure for pressure test is realized between valve and structure for pressure test by studs and hex nut fastening after assembling is close
Envelope, structure for pressure test is connected with low temperature pressure testing system by joint, and Subzero valve puts in low temperature test groove it is achieved thereby that low temperature
The experiment pressure testing of valve.Three open loops 2 are formed by an integral ring-shaped structure cutting, as shown in Figure 8,9, when integral ring-shaped knot
After structure processes, along cut-off lines 21, an integral ring-shaped even structure is cut into 3 pieces, so referred to as three open loops, is so cut into 3
Block, makes assembly or disassembly convenient.
As shown in Figure 10, the external cylindrical surface of valve 9 welding ends processes annular groove, reprocessing welding after pressure testing is qualified
Groove.During test pressure testing, Subzero valve structure for pressure test assemble sequence is snap ring 1, three open loops 2, gasket ring 3, studs 5 fill successively
After preparing, by above part and tight with fastening screw nut 4, studs 5 has 12, forms a flange assembly, and three open loops 2 are contained in
In annular groove；After anistree shape ring pad 7 loads octagonal annular groove 81, PRESSURE TESTING BLIND FLANGE 8 is fixed on flange assembly by hex nut 6
On, there is elastic deformation under thrust effect thus realizing sealing, frock assembles in anistree shape ring pad 7 and seal groove contact surface
After put into the cooling of low-temperature test groove when reaching experimental temperature, frock is little with valve seal facial disfigurement, solves Subzero valve from face
Problem with blind plate sealing leakage during pressure testing, decreases welding pressure testing head workload, to the valve union end mechanical property of materials
Do not affect, Subzero valve structure for pressure test is reusable.
This utility model passes through the positive sealing that studs and hex nut fastening are realized between valve and structure for pressure test,
Structure for pressure test is connected with low temperature pressure testing system by joint, it is achieved thereby that the experiment pressure testing of Subzero valve, this utility model can
Reuse, be convenient to mount and dismount.
Certainly, this utility model also can have other numerous embodiments, without departing substantially from this utility model spirit and its essence
In the case of, those of ordinary skill in the art can make various corresponding changes according to this utility model and deform, but these
Corresponding change and deformation all should belong to the scope of the claims appended by this utility model.
Claims (7)
1. a kind of Subzero valve structure for pressure test it is characterised in that:Including studs (5), the snap ring (1) that is coaxially disposed, three open
Ring (2), anistree shape ring pad (7) and PRESSURE TESTING BLIND FLANGE (8), described studs (5) one end is arranged on the internal thread hole of snap ring (1)
(11) in, studs (5) other end passes through the through hole A (82) of PRESSURE TESTING BLIND FLANGE (8), and fixing by hex nut (6), hexagonal
Nut (6) is located at PRESSURE TESTING BLIND FLANGE (8) outer end；Described snap ring (1) has and three open loops (2) towards on the end face of PRESSURE TESTING BLIND FLANGE (8)
The cannelure A (12) of adaptation, described PRESSURE TESTING BLIND FLANGE (8) has, towards the end face of snap ring (1), eight being adapted to anistree shape ring pad (7)
Angular annular groove (81), described cannelure A (12) is located on the inwall of snap ring (1), and described studs (5) at least two is double
Header stud (5) is along the circumferential direction arranged at equal intervals.
2. Subzero valve structure for pressure test according to claim 1 it is characterised in that：Also include gasket ring (3) and fastening screw nut
(4), described gasket ring (3) is same is located between snap ring (1) and PRESSURE TESTING BLIND FLANGE (8), and described studs (5) passes through on gasket ring (3)
Through hole B (31), described gasket ring (3) and snap ring (1) pass through fastening screw nut (4) and compress, fastening screw nut (4) and studs (5)
Threaded.
3. Subzero valve structure for pressure test according to claim 2 it is characterised in that：On the end face of described PRESSURE TESTING BLIND FLANGE (8)
Have the counter sink (83) being adapted to fastening screw nut (4).
4. the Subzero valve structure for pressure test according to Claims 2 or 3 it is characterised in that：Open on the end face of described gasket ring (3)
There is the cannelure B (32) being adapted to three open loops (2).
5. Subzero valve structure for pressure test according to claim 1 it is characterised in that：Described internal thread hole (11) is through hole.
6. Subzero valve structure for pressure test according to claim 1 it is characterised in that：Described studs (5) has 4.
7. Subzero valve structure for pressure test according to claim 1 it is characterised in that：Described studs (5) has 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620864896.2U CN205940949U (en) | 2016-08-10 | 2016-08-10 | Low temperature valve pressure testing frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620864896.2U CN205940949U (en) | 2016-08-10 | 2016-08-10 | Low temperature valve pressure testing frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205940949U true CN205940949U (en) | 2017-02-08 |
Family
ID=57923478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620864896.2U Active CN205940949U (en) | 2016-08-10 | 2016-08-10 | Low temperature valve pressure testing frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205940949U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426683A (en) * | 2018-04-20 | 2018-08-21 | 开封空分集团有限公司 | Mesolow angie type welds shut-off valve pressure testing device |
| CN109490062A (en) * | 2018-11-05 | 2019-03-19 | 成都乘风流体科技集团有限公司 | A kind of application method of valve weld bond end pressure testing sealing frock |
| CN112253866A (en) * | 2020-11-04 | 2021-01-22 | 克里特集团有限公司 | Valve pressure test structure and installation method thereof |
| CN114540798A (en) * | 2022-03-03 | 2022-05-27 | 江西汉可泛半导体技术有限公司 | Anti-falling device for silicon wafer coating |
-
2016
- 2016-08-10 CN CN201620864896.2U patent/CN205940949U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426683A (en) * | 2018-04-20 | 2018-08-21 | 开封空分集团有限公司 | Mesolow angie type welds shut-off valve pressure testing device |
| CN109490062A (en) * | 2018-11-05 | 2019-03-19 | 成都乘风流体科技集团有限公司 | A kind of application method of valve weld bond end pressure testing sealing frock |
| CN112253866A (en) * | 2020-11-04 | 2021-01-22 | 克里特集团有限公司 | Valve pressure test structure and installation method thereof |
| CN114540798A (en) * | 2022-03-03 | 2022-05-27 | 江西汉可泛半导体技术有限公司 | Anti-falling device for silicon wafer coating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 67, Section 1, Xueshan Avenue, Dayi County, Chengdu City, Sichuan Province, 611330 Patentee after: Chengdu Chenggao Valve Co.,Ltd. Patentee after: CHENGDU CHENGFENG VALVE Co.,Ltd. Address before: 610000 Industrial Road, Jinyuan Town, Dayi County, Chengdu, Sichuan Patentee before: CHENGDU CHENG GAO VALVE Co.,Ltd. Patentee before: CHENGDU CHENGFENG VALVE Co.,Ltd. |