CN104634664A - Welded valve pressure testing device - Google Patents
Welded valve pressure testing device Download PDFInfo
- Publication number
- CN104634664A CN104634664A CN201310569824.6A CN201310569824A CN104634664A CN 104634664 A CN104634664 A CN 104634664A CN 201310569824 A CN201310569824 A CN 201310569824A CN 104634664 A CN104634664 A CN 104634664A
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- worktable
- pressure testing
- valve
- operating platform
- movable table
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a welded valve pressure testing device, which comprises a base, a left side operating platform, a right side operating platform, a mobile operating platform and a compression device, wherein the left side operating platform and the right side operating platform are in parallel and are perpendicularly fixed on the base below, the mobile operating platform is arranged between the left side operating platform and the right side operating platform, a pressure testing valve is placed between the left side operating platform and the mobile operating platform, the compression device is arranged between the mobile operating platform and the right side operating platform and used for compressing and sealing two openings of the pressure testing valve on the right side surface of the left side operating platform and the left side surface of the mobile operating platform by extruding the mobile operating platform, and a compression valve is outward connected with a water injection pipe. Through holes are respectively formed in the left side operating platform, the right side operating platform and the mobile operating platform, and are connected and fixed after sequentially penetrating through a pull rod. The welded valve pressure testing device is free of welding, fast and safe, a technology of testing pressure of the valve and welding a blind plate originally can be changed, the labor intensity is lowered, and the construction technological level can be improved.
Description
Technical field
The present invention relates to value pressure test technology, specifically a kind of welding valve pressure testing device.
Background technology
According to related specifications requirement, need before all valve installations to carry out pressure testing, namely carry out valve pressure test and leakage test, can come into operation after stand the test.Flanged valve pressure testing program is relatively simple, and for welding valve, pressure test process is well improved always, is also in the level comparatively fallen behind at present.Specific practice: weld blind plate at two ends, weld seam detection is qualified, carry out pressure and leakage test again after qualified, cut off blind plate after pressure testing completes.This method pressure testing cycle is long, cost is high, efficiency is low, easy damaged valve or sleeve.
Therefore, be necessary for valve (the particularly heavy caliber of working-yard, refer to DN > 500mm) design a set of easy, efficient, pressure testing system that safety coefficient is high, come welding end band sleeve valve and the pressure test not with sleeve welding valve, enable valve pressure test working high-quality, safety, carry out efficiently.
Summary of the invention
The object of the present invention is to provide welding valve pressure testing device, non-solder, quick, safety, change the technique of the blind plate of value pressure test welding in the past, reduce labour intensity, improve operating technique level.
In order to reach above-mentioned purpose, present invention employs following technical scheme, welding valve pressure testing device, comprise base, left side worktable, right side worktable, movable table, hold down gag, described left side worktable, right side worktable is parallel to each other and is vertically fixed on the base of below simultaneously, at left side worktable, a movable table is provided with between the worktable of right side, be used between described left side worktable and movable table placing pressure testing valve, be used between described movable table and right side worktable placing hold down gag, hold down gag passes through Compressive activities worktable the right flank of two-port press seal at left side worktable of pressure testing valve and the left surface of movable table, described compression valve outwards connects a water injection pipe.
Described left side worktable, right side worktable, movable table offer through hole simultaneously, is connected and fixed through pull bar successively at respective through hole.
Described pull bar arranges four, and four through holes offered at the corner place of each worktable pass.
Described left side worktable and right side worktable are also provided with deep floor respectively and between base.
Described hold down gag is hydraulic jack.
The right flank of described left side worktable and the left surface of movable table are provided with the packoff for sealing pressure testing valve two-port.
Described packoff comprises the sealing pad be arranged on the left side right flank of worktable and the left surface of movable table and the tetrafluoroethene sealing ring being arranged on pressure testing valve port part, and the pressure testing valve port outside described tetrafluoroethene sealing ring is also provided with O-ring seals.
Compared to prior art, the present invention has following beneficial effect:
The present invention is the device that a kind of heavy caliber high pressure to being applied to the engineering fields such as oilfield surface construction, long distance pipeline, offshore platform and petrochemical industry refinery welds value pressure test.Left side worktable, right side worktable, movable table are run through by four pull bars and are connected and fixed, and movable table can move left and right along pull bar, and adapt to the value pressure test of different size model, worktable both sides, left and right are provided with reinforcement gusset.This structure is square one-piece construction, and stressed more even, strengthen the strength and stiffness of worktable, thus save material usage, weight reduction, reduces costs.Base in order to lift, convenient transportation, play a part fixing.Hydraulic jack is arranged in the middle of right side worktable and movable table, and base is fixed on right side worktable, and head is connected with movable table.Hydraulic jack compact conformation, volume is little, lightweight, easy to operate, is applicable to on-site voltage-measuring pretension.Packoff adopts teflon seal ring, seal with O ring.There is V-type groove at teflon seal ring edge, and medium acts on V-type groove and produces radial force compression O shape circle, and O shape circle carries out self-pressure-sealed, and pressure medium is higher, and sealing effectiveness better.
Accompanying drawing explanation
Fig. 1 is the support works view that the present invention does welding valve pressure testing device;
Fig. 2 is the packoff schematic diagram that the present invention does welding valve pressure testing device;
Fig. 3 is the 3-D view that the present invention does welding valve pressure testing device.
In figure: 1. water injection pipe, worktable 2., 3. pressure testing valve, 4. base, 5. hydraulic jack, worktable 6., 7. deep floor, 8. pull bar, 9. movable table, 10. tetrafluoroethene sealing ring, 11.O shape O-ring seal, 12. sealing pads.
Embodiment
Detailed description for the present invention and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides with reference to the use with explanation, is not used for being limited the present invention.
With reference to accompanying drawing 1-3, welding valve pressure testing device, comprise base 4, left side worktable 2, right side worktable 6, movable table 9, hold down gag, described left side worktable, right side worktable is parallel to each other and is vertically fixed on the base 4 of below simultaneously, at left side worktable, a movable table 9 is provided with between the worktable of right side, be used between described left side worktable and movable table placing pressure testing valve 3, be used between described movable table and right side worktable placing hold down gag, hold down gag passes through Compressive activities worktable the right flank of two-port press seal at left side worktable of pressure testing valve and the left surface of movable table, described compression valve outwards connects a water injection pipe 1.Described left side worktable, right side worktable, movable table offer through hole simultaneously, is connected and fixed through pull bar 8 successively at respective through hole.Described pull bar arranges four, and four through holes offered at the corner place of each worktable pass.Described left side worktable and right side worktable are also provided with deep floor 7 respectively and between base.Described hold down gag is hydraulic jack 5.The right flank of described left side worktable and the left surface of movable table are provided with the packoff for sealing pressure testing valve two-port.Described packoff comprises the sealing pad 12 be arranged on the left side right flank of worktable and the left surface of movable table and the tetrafluoroethene sealing ring 10 being arranged on pressure testing valve port part, and the pressure testing valve port outside described tetrafluoroethene sealing ring is also provided with O-ring seals 11.
When value pressure test, pressure testing valve 3 is winched to worktable 2 on the left of valve support platform middle with movable table 9, hydraulic jack 5 works, and movable table 9 moves forward along pull bar 8, thus steps up valve.Finally test medium is squeezed into valve by water injection pipe 1, carry out pressure testing.Along with the raising of test medium pressure, the corresponding pressure increasing hydraulic jack, to reach dynamic balance.Value pressure test sealing is sealed by teflon 10, O RunddichtringO 11.Reach initial sealing by the pretension of O RunddichtringO 11, then by the pressure compaction O-ring seals of medium, carry out self-pressure-sealed, pressure medium is higher, and sealing effectiveness better.
The foregoing is only preferred embodiment of the present invention, be not used to limit the scope of the claims of the present invention, other use the equivalence of patent spirit of the present invention to change, and all should all belong to the scope of the claims of the present invention.
Claims (7)
1. weld valve pressure testing device, it is characterized in that, comprise base, left side worktable, right side worktable, movable table, hold down gag, described left side worktable, right side worktable is parallel to each other and is vertically fixed on the base of below simultaneously, at left side worktable, a movable table is provided with between the worktable of right side, be used between described left side worktable and movable table placing pressure testing valve, be used between described movable table and right side worktable placing hold down gag, hold down gag passes through Compressive activities worktable the right flank of two-port press seal at left side worktable of pressure testing valve and the left surface of movable table, described compression valve outwards connects a water injection pipe.
2. welding valve pressure testing device according to claim 1, is characterized in that, described left side worktable, right side worktable, movable table offer through hole simultaneously, is connected and fixed successively at respective through hole through pull bar.
3. welding valve pressure testing device according to claim 2, is characterized in that, described pull bar arranges four, and four through holes offered at the corner place of each worktable pass.
4. welding valve pressure testing device according to claim 1, is characterized in that, described left side worktable and right side worktable are also provided with deep floor respectively and between base.
5. welding valve pressure testing device according to claim 1, is characterized in that, described hold down gag is hydraulic jack.
6. welding valve pressure testing device according to claim 1, is characterized in that, the right flank of described left side worktable and the left surface of movable table are provided with the packoff for sealing pressure testing valve two-port.
7. welding valve pressure testing device according to claim 6, it is characterized in that, described packoff comprises the sealing pad be arranged on the left side right flank of worktable and the left surface of movable table and the tetrafluoroethene sealing ring being arranged on pressure testing valve port part, and the pressure testing valve port outside described tetrafluoroethene sealing ring is also provided with O-ring seals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310569824.6A CN104634664A (en) | 2013-11-13 | 2013-11-13 | Welded valve pressure testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310569824.6A CN104634664A (en) | 2013-11-13 | 2013-11-13 | Welded valve pressure testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104634664A true CN104634664A (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310569824.6A Pending CN104634664A (en) | 2013-11-13 | 2013-11-13 | Welded valve pressure testing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN104634664A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414165A (en) * | 2018-03-23 | 2018-08-17 | 温州大学 | A kind of valve measurement pressure testing device |
| CN109211680A (en) * | 2018-11-05 | 2019-01-15 | 成都乘风流体科技集团有限公司 | A kind of valve welded end pressure testing sealing structure |
| CN112697353A (en) * | 2020-12-07 | 2021-04-23 | 陕西广大重型机械有限公司 | Method for detecting weld defects of fan shell |
Citations (6)
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| GB401621A (en) * | 1932-10-27 | 1933-11-16 | Rudolf Traut | Improvements in tube testing machines |
| CN202101829U (en) * | 2011-05-06 | 2012-01-04 | 苏州元华气体设备有限公司 | Valve airtight detection apparatus |
| CN202547870U (en) * | 2012-04-10 | 2012-11-21 | 江苏金石阀业有限公司 | Valve pressure test clamp |
| CN203241206U (en) * | 2013-05-21 | 2013-10-16 | 中国石油天然气第七建设公司 | Hand-operated valve pressure testing mould |
| CN203241201U (en) * | 2013-02-04 | 2013-10-16 | 卓旦春 | Valve pressure test device |
| CN203658164U (en) * | 2013-11-13 | 2014-06-18 | 中石化胜利油建工程有限公司 | Welding valve pressure testing device |
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2013
- 2013-11-13 CN CN201310569824.6A patent/CN104634664A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB401621A (en) * | 1932-10-27 | 1933-11-16 | Rudolf Traut | Improvements in tube testing machines |
| CN202101829U (en) * | 2011-05-06 | 2012-01-04 | 苏州元华气体设备有限公司 | Valve airtight detection apparatus |
| CN202547870U (en) * | 2012-04-10 | 2012-11-21 | 江苏金石阀业有限公司 | Valve pressure test clamp |
| CN203241201U (en) * | 2013-02-04 | 2013-10-16 | 卓旦春 | Valve pressure test device |
| CN203241206U (en) * | 2013-05-21 | 2013-10-16 | 中国石油天然气第七建设公司 | Hand-operated valve pressure testing mould |
| CN203658164U (en) * | 2013-11-13 | 2014-06-18 | 中石化胜利油建工程有限公司 | Welding valve pressure testing device |
Non-Patent Citations (2)
| Title |
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| 张学军: "高压焊接阀门试压方法的探讨", 《阀门》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414165A (en) * | 2018-03-23 | 2018-08-17 | 温州大学 | A kind of valve measurement pressure testing device |
| CN109211680A (en) * | 2018-11-05 | 2019-01-15 | 成都乘风流体科技集团有限公司 | A kind of valve welded end pressure testing sealing structure |
| CN112697353A (en) * | 2020-12-07 | 2021-04-23 | 陕西广大重型机械有限公司 | Method for detecting weld defects of fan shell |
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Application publication date: 20150520 |