CN205691298U - A kind of detection device for inner hole welding of rapid cooling joint - Google Patents
A kind of detection device for inner hole welding of rapid cooling joint Download PDFInfo
- Publication number
- CN205691298U CN205691298U CN201620458277.3U CN201620458277U CN205691298U CN 205691298 U CN205691298 U CN 205691298U CN 201620458277 U CN201620458277 U CN 201620458277U CN 205691298 U CN205691298 U CN 205691298U
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- CN
- China
- Prior art keywords
- extruding
- welding
- runddichtringo
- moving casing
- extruding screw
- 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.)
- Withdrawn - After Issue
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Abstract
A kind of detection device for inner hole welding of rapid cooling joint, it is characterised in that it includes moving casing, " O " RunddichtringO, extruding screw, extruding slide block and extruding nut；Described moving casing is by the boss of extruding screw one end and " O " RunddichtringO, and " O " RunddichtringO of the other end, extruding slide block and extruding nut sleeve are on extruding screw；Described moving casing is being provided with venthole near welding point position, and one end of described extruding screw is provided with between air inlet connection moving casing and extruding screw the crawl space formed.This utility model detection device can be used for the quality testing of various heat exchanger internal bore welding welding point, this device, simple in construction, parts are few, the advantages such as fabrication and installation are convenient, and operation safety and stability is reliable, the quality testing to various heat exchanger internal bore welding welding points is the most applicable.
Description
Technical field
This utility model belongs to mechanical erection equipment technical field, is specifically related to pipe and the pipe of internal bore welding in heat exchanger
The special purpose device of plate quality of weld joint detection.
Background technology
In the design of heat exchanger, according to the particular case of medium with avoid producing between tube-to-tube sheet connection corrosion, pipe
Using, with the type of attachment of tube sheet, form of docking, welding method uses internal bore welding, for internal bore welding quality of weld joint how
Go to ensure and detection.The most generally use helium to detect as detected gas butt welded seam, due to helium for the problems referred to above
Sensitivity high, such as incorrect use, helium easily produces gas interference to surrounding, and affects follow-up work.Thus, carry
Go out the position by internal bore welding welding point detects to be limited in limited space, be passed through minimal amount of in narrow confined space
Helium, i.e. wants Welded Joints to detect, can not be diffused to surrounding by helium again.
Summary of the invention
The purpose of this utility model is for overcoming the problems referred to above, and the one proposed is economic and practical, safety and be applicable to heat
The detection device of exchanger internal bore welding quality of weld joint.
This utility model device is particularly well-suited to the detection of heat exchanger internal bore welding quality of weld joint, can be fully achieved and
Meet internal bore welding quality of weld joint testing requirement in heat exchanger.
Main technical schemes of the present utility model: for the detection device of inner hole welding of rapid cooling joint, it is characterised in that it includes
Moving casing, " O " RunddichtringO, extruding screw, extruding slide block and extruding nut；Described moving casing passes through extruding screw one end
Boss and " O " RunddichtringO seal, " O " RunddichtringO of the other end, extruding slide block and extruding nut sleeve are on extruding screw；
Described moving casing is being provided with venthole near welding point position, and one end of described extruding screw is provided with air inlet connection and lives
The dynamic crawl space formed between sleeve pipe and extruding screw.
This utility model is such to running: first device all parts is carried out assembling integral, to extruding nut
Preliminary pretension, makes " O " RunddichtringO be in non-radial expansion state, puts down gently in tube sheet pore, and in device, venthole position is put
At the welding point of tube-to-tube sheet connection, extruding nut is carried out pretension, extruding screw and extruding nut and produces and move towards, live
Dynamic sleeve pipe is relative to resting state, and " O " RunddichtringO is pressurized under the responsive to axial force of extruding screw and extruding nut, produces footpath
To expansion, " O " RunddichtringO at two ends produces with hole wall and fits tightly, and forms a confined space the narrowest, at this moment passes through
Inert gas helium with certain pressure is passed through in narrow confined space by the enterprising pore of extruding screw, at tube-to-tube sheet connection
Welding point at outside carry out helium inspection, as without helium leakage, then tube-tube plate welding is qualified.Often weld a welding to connect
Head can detect.
This utility model detection device can be used for the quality testing of various heat exchanger internal bore welding welding point, this device,
Simple in construction, the advantages such as parts are few, and fabrication and installation are convenient, and operation safety and stability is reliable, various heat exchanger internal bore weldings are welded
The quality testing of joint is the most applicable.
Accompanying drawing explanation
Fig. 1 this utility model embodiment is for the detection device schematic diagram of heat exchanger inner hole welding of rapid cooling joint.
Fig. 2 is the structural representation of extruding screw in embodiment.
Fig. 3 is the structural representation of moving casing in embodiment.
Fig. 4 is the structural representation extruding slide block in embodiment.
In figure, 1-extruding screw；2-" O " RunddichtringO；3-moving casing；4 extruding slide blocks；5 extruding nuts.
Detailed description of the invention
Below in conjunction with drawings and Examples, structure of the present utility model is described in detail.
Embodiment: the present embodiment, for the detection device of heat exchanger inner hole welding of rapid cooling joint, as shown in Figure 1, mainly wraps
Include moving casing 3, " O " RunddichtringO 2, extruding screw 1, extruding slide block 4 and extruding nut 5；Described moving casing 3(sees attached
Fig. 2) seeing accompanying drawing 2 by extruding screw 1() boss of one end and " O " RunddichtringO seal, " O " RunddichtringO of the other end,
Extruding slide block (seeing accompanying drawing 4) and extruding nut 5 are enclosed within extruding screw 1；Described moving casing 3 is near welding point (weldering
Seam) position is provided with venthole, and one end of described extruding screw 1 is provided with between air inlet connection moving casing 3 and extruding screw 1
The crawl space formed.
It is first the moving casing in device, " O " RunddichtringO, extruding screw that the present embodiment device is installed, and extrudes slide block,
Extruding nut etc. assembles.The extruding preliminary pretension of nut, makes " O " RunddichtringO be in non-radial expansion state, assembles
Device external diameter be slightly less than the internal diameter of heat exchange pore, put down gently in tube sheet pore, the location of device should be so, venthole position
Being placed on joint (weld seam) place of tube-to-tube sheet connection, extruding nut carries out pretension, at this moment " O " RunddichtringO at extruding screw and squeezes
Pressurized under the responsive to axial force of pressure nut, produces radially uniform expansion, and " O " RunddichtringO at two ends and hole wall produce closely patch
Close, form a pressure-bearing confined space the narrowest, at this moment by the air inlet of extruding screw by the inert with certain pressure
Gas helium is passed through in narrow confined space, makes detected gas uniformly spread in narrow confined space, at tube-to-tube sheet connection
Welding point at outside carry out helium inspection, through 5 ~ 6 seconds as without helium leakage tube-tube plate welding qualified.Often weld a weldering
Joint can detect.This device can be connected, and detects the welding point of multiple internal bore welding simultaneously.
This utility model special purpose device can be used for the quality testing of various heat exchanger internal bore welding welding point, and this is novel specially
The advantages such as by device, simple in construction, parts are few, and fabrication and installation are convenient, and operation safety and stability is reliable, in various heat exchangers
The quality testing of eyelet welding welding point is the most applicable.
Claims (1)
1. for the detection device of inner hole welding of rapid cooling joint, it is characterised in that it includes moving casing, " O " RunddichtringO, extruding spiral shell
Bar, extruding slide block and extruding nut；Described moving casing is sealed, separately by boss and " O " RunddichtringO of extruding screw one end
" O " RunddichtringO of one end, extruding slide block and extruding nut sleeve are on extruding screw；Described moving casing is near welding point
Position is provided with venthole, and one end of described extruding screw is provided with formation between air inlet connection moving casing and extruding screw
Crawl space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620458277.3U CN205691298U (en) | 2016-05-19 | 2016-05-19 | A kind of detection device for inner hole welding of rapid cooling joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620458277.3U CN205691298U (en) | 2016-05-19 | 2016-05-19 | A kind of detection device for inner hole welding of rapid cooling joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205691298U true CN205691298U (en) | 2016-11-16 |
Family
ID=57261995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620458277.3U Withdrawn - After Issue CN205691298U (en) | 2016-05-19 | 2016-05-19 | A kind of detection device for inner hole welding of rapid cooling joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205691298U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784284A (en) * | 2016-05-19 | 2016-07-20 | 中国石化集团南京化学工业有限公司化工机械厂 | Detection device for inner hole welded joints |
-
2016
- 2016-05-19 CN CN201620458277.3U patent/CN205691298U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784284A (en) * | 2016-05-19 | 2016-07-20 | 中国石化集团南京化学工业有限公司化工机械厂 | Detection device for inner hole welded joints |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161116 Effective date of abandoning: 20171212 |
|
| AV01 | Patent right actively abandoned |