CN202267575U - Long hole welding pressure testing tool - Google Patents
Long hole welding pressure testing tool Download PDFInfo
- Publication number
- CN202267575U CN202267575U CN 201120362687 CN201120362687U CN202267575U CN 202267575 U CN202267575 U CN 202267575U CN 201120362687 CN201120362687 CN 201120362687 CN 201120362687 U CN201120362687 U CN 201120362687U CN 202267575 U CN202267575 U CN 202267575U
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- Prior art keywords
- head
- hole
- pull bar
- tube
- chock plug
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- Expired - Fee Related
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- 238000003466 welding Methods 0.000 title claims abstract description 26
- 238000012360 testing method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 210000004907 gland Anatomy 0.000 claims description 15
- 230000008961 swelling Effects 0.000 claims description 12
- 238000012856 packing Methods 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 4
- 206010042674 Swelling Diseases 0.000 description 8
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a long hole welding pressure testing tool. A head tool is arranged in a tube sheet hole on one side of a deep hole welding gap while a tail tool is arranged in a heat exchange tube on the other side of the deep hole welding gap. The head tool includes a first pull rod provided with a through hole in an axial direction. A water inlet is arranged in the head of the first pull rod. The head of the first pull rod protrudes from a port of the tube sheet hole. The tail tool includes a second pull rod provided with a through hole in an axial direction. The head of the second rod is provided with a water outlet. A sealing cover is arranged on the water outlet. The head of the second pull rod protrudes from a port of a tube hole of the heat exchange tube. The first pull rod and the second pull rod are respectively provided with expansion sealing devices capable of expansion sealing with inner walls of the holes. The long hole welding pressure testing tool in the utility model has advantages of simple and practical structure, convenient operation and substantially improved working efficiency. And the long hole welding pressure testing tool in the utility model can detect a leaky heat exchange tube before shell welding is finished, thereby improving the product quality substantially.
Description
Technical field
The utility model relates to the deep hole weldering structure for pressure test that is used to detect the deep hole welding line.
Background technology
In chemical industry, oil, medicine, atomic energy, nuclear industry, the application of heat interchanger is very extensive, and wherein shell-and-tube heat exchanger is to use the most general.In processes such as the design of shell-and-tube heat exchanger, manufacturing, the quality of the welding quality between heat exchanger tube and the tube sheet upper perforated plate hole has determined the quality of heat interchanger quality and the length in serviceable life.In the conventional welded structure, exist the gap to be easy to generate crevice corrosion, problem such as overheated between tubesheet holes and the heat exchanger tube, and internal bore welding can overcome above problem, internal bore welding is connected and often is called the deep hole weldering at a distance.When equipment making, treat that pore and heat exchanger tube deep hole welding on the tube sheet is accomplished after, the weld seam of the deep hole weldering between the heat exchanging tube and tube plate to carry out pressure testing, whether detect the weld seam that deep hole welds has seepage.Traditional detection mode is that the hydraulic testing is being carried out to whole housing in the welding finishing of the housing outside tube sheet and heat exchanger tube back.Though whether above-mentioned pressure testing mode can detect seepage; Which root heat exchanger tube seepage but is difficult to detect specifically is; And, can't carry out repair welding or replacing to the heat exchanger tube of seepage because outside housing has welded completion, the mode that can only adopt plugging is fallen the heat exchange pipe plug of seepage; Reduce heat interchanging area like this, also reduced product quality.
The utility model content
A kind of deep hole simple in structure, that can before the housing welding is accomplished, detect the heat exchanger tube of seepage that provides of the problem that the utility model need solve welds structure for pressure test.
For addressing the above problem; The technical scheme that the utility model adopts is: deep hole weldering structure for pressure test; Tubesheet holes being arranged in deep hole welding line one side is provided with the head frock, is provided with the afterbody frock at the heat exchanger tube that is arranged in deep hole welding line opposite side, and described head frock comprises: first pull bar that is provided with through hole vertically; The head of first pull bar is provided with water inlet, and the head of first pull bar protrudes from outside the port of tubesheet holes; Described afterbody frock comprises: be provided with second pull bar of through hole vertically, the head of second pull bar is provided with water delivering orifice, and water delivering orifice is provided with gland bonnet, and the head of second pull bar protrudes from outside the port of heat exchanger tube pore; Be respectively arranged with and belong to the swelling packoff of the inwall swelling sealing in hole on first pull bar and second pull bar; The structure of described swelling packoff is: be arranged on mouth of pipe nut and tightening nut on the pull bar; On the pull bar between mouth of pipe nut and the tightening nut, also be disposed with adjacent chock plug of a pair of afterbody and O-ring seal; The head of described each chock plug is thick and attenuate to the afterbody of chock plug gradually; Two chock plug fit ons are set with the bloated tube of distinguish shape, and described bloated can and be clamped on the inwall in hole, place with the swelling simultaneously of two chock plugs, and described O-ring seal can seal with the inwall chucking in hole, place; Described mouth of pipe nut protrusion is outside the port in hole, place, and described bloated tube head is provided with collar, and collar is stuck on the port in hole, place.
Further, aforesaid deep hole weldering structure for pressure test, wherein, the bloated tube of described distinguish shape evenly is divided into three lobes along circumference, and the outer wall of described bloated tube is provided with jagged latch.
A nearlyer step ground, aforesaid deep hole weldering structure for pressure test wherein, is provided with the packing washer that cooperates with water delivering orifice in the described gland bonnet, and gland bonnet is provided with handle, and gland bonnet is provided with and the extraneous perforate that communicates.
The utility model has the advantages that: simple and practical, easy to operate, improve work efficiency greatly, and can before the housing welding is accomplished, detect the heat exchanger tube of seepage, improved the quality of product greatly.
Description of drawings
Fig. 1 is the structural representation of the described deep hole weldering of the utility model structure for pressure test.
Fig. 2 is the structural representation of first chock plug among Fig. 1.
Fig. 3 is the vertical view among Fig. 2.
Fig. 4 is the enlarged diagram of A part among Fig. 2.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to specify.
Like Fig. 1, shown in Figure 2; Deep hole weldering structure for pressure test; In the tubesheet holes 20 of the tube sheet 10 of deep hole welding line 24 both sides and heat exchanger tube 5, be respectively arranged with head frock and afterbody frock; Described head frock comprises: first pull bar 1 that is provided with through hole vertically; The head of first pull bar 1 is provided with head and first mouth of pipe nut 3 protrusion that water inlet 2, the first pull bars 1 are provided with first mouth of pipe nut 3 and first tightening nut, 4, the first pull bars outside the port of the tubesheet holes 20 of tube sheet 10; On first pull bar 1 between first mouth of pipe nut 3 and first tightening nut 4, be disposed with first chock plug 6, second chock plug 61, first O-ring seal 7; Described first chock plug 6 and second chock plug 61 are head and slightly also attenuate to afterbody gradually, the adjacent setting of afterbody of the afterbody of first chock plug 6 and second chock plug 61, and described first O-ring seal 7 can seal with the inwall chucking of tubesheet holes 20; Described first chock plug 6 and 61 fit ons of second chock plug are set with the first bloated tube 8 of distinguish shape; Described first expand tube 8 head be provided with first collar, 9, the first collars 9 and be stuck on the port of tubesheet holes 20, described first expand tube 8 can with the swelling and being stuck on the inwall of tubesheet holes 20 respectively simultaneously of first chock plug 6 and second chock plug 61; Described afterbody frock comprises: second pull bar 11 that is provided with through hole vertically; The head of second pull bar 11 is provided with water delivering orifice 12; Water delivering orifice 12 is provided with gland bonnet 13; Second pull bar 11 is provided with second mouth of pipe nut 14 and second tightening nut 15; The head of second pull bar 11 and second mouth of pipe nut 14 protrusion are disposed with the 3rd chock plug 16, the 4th chock plug 161, second O-ring seal 17 on second pull bar 11 between second mouth of pipe nut 14 and second tightening nut 15 outside the port of heat exchanger tube 5, the head of described the 3rd chock plug 16 and the 4th chock plug 161 slightly also attenuates to afterbody gradually; The adjacent setting of the afterbody of the afterbody of the 3rd chock plug 16 and the 4th chock plug 161; Described second O-ring seal 17 can seal with the inwall chucking of heat exchanger tube 5, and the head that described the 3rd chock plug 16 and 161 fit ons of the 4th chock plug are set with second bloated tube 18, the described second bloated tube 18 of distinguish shape is provided with second Ka19Quan; Second collar 19 is stuck on heat exchanger tube 5 ports, described second expand tube 18 can with the while swelling and being stuck on heat exchanger tube 5 inwalls respectively of the 3rd chock plug 16 and the 4th chock plug 161.In the present embodiment, the structure of the described first bloated tube 8 and the second bloated tube 18 is identical, all evenly is divided into three lobes along circumference; Be that example is explained with the first bloated tube 8 only in the present embodiment, like Fig. 2, Fig. 3, shown in Figure 4, the outer wall of described bloated tube is provided with jagged latch 27; For the ease of installing; First of the three lobe shapes tube 8 that expands, the barrel that expands is provided with draw-in groove 26, is installing after can in draw-in groove 26, loading onto jump ring.Be provided with the packing washer 21 that cooperates with water delivering orifice 12 in the described gland bonnet 13, gland bonnet 13 is provided with handle 22, and gland bonnet 13 is provided with and the extraneous perforate 23 that communicates.First O-ring seal 7 described in the present embodiment and the both sides of second O-ring seal 17 are provided with packing ring 25.
During pressure testing, as shown in fig. 1 what need to detect is deep hole weld seam 24, then needs earlier the both sides of weld seam 24 are formed seal section.When earlier first mouth of pipe nut 3 being tightened; First pull bar 1 moves outside tubesheet holes 20 vertically; Distance between first mouth of pipe nut 3 and first tightening nut 4 slowly shortens; This moment, first chock plug 6 and second chock plug 61 radially outward squeezed first bloated tube 8 continuous outside the expansions in the effect lower edge of pressure at two ends, and first bloated tube 8 and first chock plug 6 and the 61 mutual swellings of second chock plug are after first mouth of pipe nut 3 is tightened fully; The first bloated tube 8 is expanded to the inwall that tightly blocks tubesheet holes 20; As shown in Figure 4 expanding first is provided with jagged latch 27 on the outer wall of tube 8, latch 27 can increase and tubesheet holes 20 between friction force, make first bloated 8 the outer wall and the inwall card of tubesheet holes 20 get more firm; Owing to receive the extruding of first tightening nut 4 and second chock plug 61 in the both sides of first O-ring seal 7, first O-ring seal 7 also constantly radially outwards expansion until with the inner wall sealing of tubesheet holes 20; Then second mouth of pipe nut 14 is tightened; Second pull bar 11 moves outside the mouth of pipe of heat exchanger tube 5 vertically; Distance between second mouth of pipe nut 14 and second tightening nut 15 slowly shortens; This moment, the 3rd chock plug 16 and the 4th chock plug 161 radially outward squeezed second bloated tube 18 continuous outside the expansions in the effect lower edge of pressure at two ends, and second bloated tube the 18 and the 3rd chock plug 16 and the 161 mutual swellings of the 4th chock plug are tightened until second mouth of pipe nut 14 fully; The second bloated tube 18 is expanded to the inwall that tightly blocks heat exchanger tube 5; Expanding second also is provided with jagged latch on the outer wall of tube 18, latch can increase and heat exchanger tube 5 inwalls between friction force, make second bloated 18 the outer wall and the inwall card of heat exchanger tube 5 get more firm; Owing to receive the extruding of second tightening nut 15 and the 4th chock plug 161 in the both sides of second O-ring seal 17, second O-ring seal 17 constantly radially outwards expansions until with the inner wall sealing of heat exchanger tube 5.Water flowing in the water inlet 2 then, water flows to water delivering orifice 12 through the through hole in the through hole in first pull bar 1, heat exchanger tube 5 and second pull bar 11, and gland bonnet 13 wouldn't be tightened; After having water to discharge in the perforate 23; Turning handle 22 is tightened gland bonnet 13, and packing washer 21 in the gland bonnet 13 and water delivering orifice 12 sealings constantly pressurize toward water inlet 2 places again; If deep hole weld seam 24 places do not have seepage; Explain that then deep hole welding line 24 satisfies request for utilization,, then need carry out Welding Repair or replacing in addition if deep hole weld seam 24 places have seepage to come out.After a heat exchanger tube inspection finishes; Head frock and afterbody frock are pulled down and are encased in the corresponding pore of another root heat exchanger tube that needs detection; Can carry out the inspection of next root heat exchanger tube again, each root heat exchanger tube can obtain detecting and carrying out Welding Repair before the housing welding like this.
The utility model has the advantages that: simple and practical, easy to operate, improve work efficiency greatly, and can before the housing welding is accomplished, detect the heat exchanger tube of seepage, improved the quality of product greatly.
Claims (3)
1. deep hole welds structure for pressure test; It is characterized in that: the tubesheet holes being arranged in deep hole welding line one side is provided with the head frock; Heat exchanger tube being arranged in deep hole welding line opposite side is provided with the afterbody frock; Described head frock comprises: be provided with first pull bar of through hole vertically, the head of first pull bar is provided with water inlet, and the head of first pull bar protrudes from outside the port of tubesheet holes; Described afterbody frock comprises: be provided with second pull bar of through hole vertically, the head of second pull bar is provided with water delivering orifice, and water delivering orifice is provided with gland bonnet, and the head of second pull bar protrudes from outside the port of heat exchanger tube pore; Be respectively arranged with and belong to the swelling packoff of the inwall swelling sealing in hole on first pull bar and second pull bar; The structure of described swelling packoff is: be arranged on mouth of pipe nut and tightening nut on the pull bar; On the pull bar between mouth of pipe nut and the tightening nut, also be disposed with adjacent chock plug of a pair of afterbody and O-ring seal; The head of described each chock plug is thick and attenuate to the afterbody of chock plug gradually; Two chock plug fit ons are set with the bloated tube of distinguish shape, and described bloated can and be clamped on the inwall in hole, place with the swelling simultaneously of two chock plugs, and described O-ring seal can seal with the inwall chucking in hole, place; Described mouth of pipe nut protrusion is outside the port in hole, place, and described bloated tube head is provided with collar, and collar is stuck on the port in hole, place.
2. deep hole weldering structure for pressure test according to claim 1 is characterized in that: the bloated tube of described distinguish shape evenly is divided into three lobes along circumference, and the outer wall of described bloated tube is provided with jagged latch.
3. deep hole weldering structure for pressure test according to claim 1 and 2, it is characterized in that: be provided with the packing washer that cooperates with water delivering orifice in the described gland bonnet, gland bonnet is provided with handle, and gland bonnet is provided with and the extraneous perforate that communicates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120362687 CN202267575U (en) | 2011-09-26 | 2011-09-26 | Long hole welding pressure testing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120362687 CN202267575U (en) | 2011-09-26 | 2011-09-26 | Long hole welding pressure testing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202267575U true CN202267575U (en) | 2012-06-06 |
Family
ID=46158366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120362687 Expired - Fee Related CN202267575U (en) | 2011-09-26 | 2011-09-26 | Long hole welding pressure testing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202267575U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393280A (en) * | 2011-09-26 | 2012-03-28 | 张家港化工机械股份有限公司 | Deep hole welding pressure test tool |
| CN104034484A (en) * | 2014-06-18 | 2014-09-10 | 贵州红阳机械(集团)公司 | Corrugated hose detection device |
| CN110057680A (en) * | 2018-01-19 | 2019-07-26 | 兰州兰石重型装备股份有限公司 | Heat exchanger tube structure for pressure test and its application method |
| CN112556948A (en) * | 2020-12-16 | 2021-03-26 | 广州奇典皮件有限公司 | Water detection device for remanufacturing air compressor cylinder body |
-
2011
- 2011-09-26 CN CN 201120362687 patent/CN202267575U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393280A (en) * | 2011-09-26 | 2012-03-28 | 张家港化工机械股份有限公司 | Deep hole welding pressure test tool |
| CN104034484A (en) * | 2014-06-18 | 2014-09-10 | 贵州红阳机械(集团)公司 | Corrugated hose detection device |
| CN110057680A (en) * | 2018-01-19 | 2019-07-26 | 兰州兰石重型装备股份有限公司 | Heat exchanger tube structure for pressure test and its application method |
| CN112556948A (en) * | 2020-12-16 | 2021-03-26 | 广州奇典皮件有限公司 | Water detection device for remanufacturing air compressor cylinder body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SUZHOU TIANWO TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ZHANGJIAGANG CHEMICAL MACHINERY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Suzhou City, Jiangsu province 215633 gold town Zhangjiagang city after Cheng Cheng Yang Lu Patentee after: Suzhou Tian Wo Science and Technology Co., Ltd. Address before: Suzhou City, Jiangsu province 215633 gold town Zhangjiagang city after Cheng Cheng Yang Road Zhangjiagang chemical machinery Limited by Share Ltd Patentee before: Zhangjiagang Chamical Machinery Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170828 Address after: 215632, Linjiang Road, Changshan village, Nansha Town, Zhangjiagang, Jiangsu, Suzhou 1, China Patentee after: Chang Hua machine (Suzhou) heavy equipment Co., Ltd. Address before: Suzhou City, Jiangsu province 215633 gold town Zhangjiagang city after Cheng Cheng Yang Lu Patentee before: Suzhou Tian Wo Science and Technology Co., Ltd. |
|
| 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: 20120606 Termination date: 20190926 |