CN103149221B - Pipe, pipe sheet fillet weld radiographic detection exposure head - Google Patents
Pipe, pipe sheet fillet weld radiographic detection exposure head Download PDFInfo
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- CN103149221B CN103149221B CN201310048945.6A CN201310048945A CN103149221B CN 103149221 B CN103149221 B CN 103149221B CN 201310048945 A CN201310048945 A CN 201310048945A CN 103149221 B CN103149221 B CN 103149221B
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Abstract
The invention discloses a pipe, pipe sheet fillet weld radiographic detection exposure head, which includes an exposure pipe and an end cover connected to the exposure pipe. The exposure pipe is internally provided with channel by which a radiographic source braid passes. The exposure head is characterized in that a far-end outer wall of the exposure pipe is provided with external threads. The exposure head also includes a fixation block, the inside of which is provided with an internal thread hole matching with an exposure pipe far-end external thread. The outer surface of the fixation block matches with a to-be-detected pipe in terms of shape and size. The exposure pipe outer wall is sleeved with a plurality of compensation blocks between the fixation block and end cover. The compensation blocks are internally provided with through holes matching with the exposure pipe outer wall. The outer surfaces of the compensation blocks match with the to-be-detected pipe in terms of shape and size. The invention has the beneficial effects that: the pipe, pipe sheet fillet weld radiographic detection exposure head can be conveniently mounted on a source transportation pipe, can be operated outside a transillumination chamber, also can meet the needs of fillet weld of pipes with different pipe diameters, wall thickness as well as pipe spacing, and is a special exposure head device with the advantages of convenient and accurate aligning.
Description
Technical field
The present invention relates to the device utilizing radiation detection metal solder mass defect, especially a kind of pipe, tube sheetbrace angle weld seam ray detection photohead.
Background technology
In electric power, machinery, chemical plant manufacture, the fillet welding welding quality inspection at the tube-to-tubesheet joint place of tubular heat exchanger is a great problem, due to measured object narrow field, on-the-spot adaptive faculty is poor, and in the ray detection of routine, Ultrasonic Detection butt welded seam, the weld defects such as pore slag inclusion cannot effectively be monitored.Weld seam fault in device fabrication and hidden danger can cause equipment to leak in use for some time, cause normally running and the repairing that stops production, cause heavy economic losses.
In order to the fillet welding welding quality inspection to tube-to-tubesheet joint place, Chinese utility model patent 200620069212.6 discloses a kind of micro-focus gamma ray flaw detector and puts into outsourcing additional mask material stainless steel casing by the main shield lean uranium tank of built-in gamma ray projector pigtail, be fixedly connected with exposure tube with output end cap at the premenstrual locking disc in its front end, in its back-end through after lockweight with conveying sleeve be fixedly connected with, be provided with coaxial conveying lever in conveying sleeve to be connected with conveying sleeve is dynamic, duct and the exposure tube of gamma ray projector pigtail is placed in depleted uranium pipe, conveying sleeve is on same straight channel axis.The utility model is applied to electric power, machinery, chemical plant manufacture field for detecting weldquality.Its advantage is highly sensitive, and the little defect such as pore, slag inclusion to 0.5 millimeter can detect, and reliable results, Test Field adaptability is good, flexibly and easily.The weak point of the program is: need operating personnel directly to operate before defectoscope, can increase the radiation dose of operating personnel like this, causes certain infringement to health.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, a kind of pipe easy to use, safe, tube sheetbrace angle weld seam ray detection photohead are provided.
Technical scheme of the present invention is as follows:
A kind of pipe, tube sheetbrace angle weld seam ray detection photohead, comprise exposure tube, the end cap be connected with exposure tube, exposure tube inside has for the passage by radiographic source pigtail, it is characterized in that, described exposure tube far-end outer wall is provided with external thread, this photohead also includes fixed block, the internal thread hole coordinated with described exposure tube far-end external thread is had in fixed block, fixed block outside surface matches with caliber shape and size to be measured, on exposure tube outer wall, between fixed block and end cap, cover has multiple compensation block, the through hole coordinated with exposure tube outer wall is had in compensation block, compensation block outside surface matches with caliber shape and size to be measured.
The preferred technical solution of the present invention is as follows:
Preferably, have a through hole at the far-end of exposure tube, the diameter of through hole is less than for the passage by radiographic source pigtail, is provided with internal thread in through hole, described photohead also comprises a solid adjuster bar, and this adjuster bar has the external thread with the screw-internal thread fit in described through hole.
Preferably, described end cap and exposure tube are threaded connection, and exposure tube outer wall is provided with external thread, and end cap is provided with internal thread, and the two is connected.
Preferably, the termination that described end cap is connected with defeated source capsule is plug-type syndeton.
Preferably, the termination that described end cap is connected with defeated source capsule is screw connection structure.
Preferably, described exposure tube, fixed block, compensation block and end cap are stainless steel material.
The invention has the beneficial effects as follows: this pipe, tube sheetbrace angle weld seam ray detection photohead can easily be arranged on defeated source capsule, in transillumination field operation, can meet different tube diameters again, wall thickness, pipe compartment is apart from pipe fillet weld, and contraposition is convenient, special photohead device accurately.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is the schematic diagram of the exposure tube part of the photohead of the embodiment of the present invention.
Fig. 2 is the cut-open view of the fixed block of the photohead of the embodiment of the present invention.
Fig. 3 is the cut-open view of the photohead compensation block of the embodiment of the present invention.
Fig. 4 is the schematic diagram of another embodiment exposure tube of photohead of the embodiment of the present invention.
Fig. 5 is the schematic diagram of middle adjuster bar embodiment illustrated in fig. 4.
Fig. 6 is the schematic diagram of the end cap of the photohead of the embodiment of the present invention.
Embodiment
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 6, the specific embodiment of the invention, a kind of pipe, tube sheetbrace angle weld seam ray detection photohead, comprise stainless exposure tube 1, the long 90mm of exposure tube 1, external diameter 10mm, its two ends have the external thread 3 and 4 of M10, and stainless end cap 9 is connected with the external thread 4 of exposure tube 1, exposure tube 1 inside has for the passage 2 by radiographic source pigtail, the diameter of passage 2 is 7mm, and length is 40mm, is applicable to the situation that exposure focal length is 40mm.External thread 3 on described exposure tube 1 far-end outer wall coordinates with stainless fixed block 5, fixed block 5 is coordinated with described exposure tube 1 far-end external thread by its internal female hole, fixed block 5 outside surface matches with caliber shape and size to be measured, fixed block 5 external diameter 0.5mm less of caliber to be measured.On exposure tube 1 outer wall, between fixed block 5 and end cap 9, cover has multiple stainless compensation block 6, have the through hole coordinated with exposure tube outer wall in compensation block 6, compensation block 6 outside surface matches with caliber shape and size to be measured, its external diameter 0.5mm less of caliber to be measured.
The photohead of this example goes for the detection of the common specification heat exchanger tube of bore≤18mm, and easy to use, difficulty of processing is little.But the focal length of exposure depends on the length of passage 2.
In order to improve this situation, embodiments of the invention 2 preferably provide a kind of pipe, tube sheetbrace angle weld seam ray detection photohead, as shown in Figure 4 and Figure 5, comprise stainless exposure tube 1, the long 90mm of exposure tube 1, external diameter 10mm, its two ends have the external thread of M10, and stainless end cap 9 is connected with the external thread of exposure tube 1, and exposure tube 1 inside has for the passage 2 by radiographic source pigtail, the diameter of passage 2 is 7mm, and length is 80mm.A through hole 7 is had at described exposure tube 1 far-end, the diameter of through hole 7 is less than the diameter for the passage 2 by radiographic source pigtail, it is the through hole 7 being provided with M4 screw thread in adopting in this example, described photohead also comprises a solid adjuster bar 8 corresponding to described through hole 7, the long 120mm of adjuster bar 8, this adjuster bar 8 has the external thread with the screw-internal thread fit in described through hole 7, by regulating the position of adjuster bar 8 in through hole 7, the length of passage 2 can be regulated, and then regulate exposure focal length arbitrarily in the scope of 30-80mm.External thread on described exposure tube 1 far-end outer wall coordinates with stainless fixed block 5, fixed block 5 is coordinated with described exposure tube 1 far-end external thread by its internal female hole, fixed block 5 outside surface matches with caliber shape and size to be measured, fixed block 5 external diameter 0.5mm less of caliber to be measured.On exposure tube 1 outer wall, between fixed block 5 and end cap 9, cover has multiple stainless compensation block 6, have the through hole coordinated with exposure tube outer wall in compensation block 6, compensation block 6 outside surface matches with caliber shape and size to be measured, its external diameter 0.5mm less of caliber to be measured.The photohead of any focal length, is applicable to the detection of all size heat exchanger tube.Difficulty of processing is comparatively large, is widely used.
Fig. 6 is for connecting photohead and defeated source capsule end plate 9, and it is connected with photohead and adopts silk mouth to connect, and is connected and is designed to fast access node structure 11, conveniently connection, also can make the connection of silk mouth with defeated source capsule.
All features disclosed in this instructions, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this instructions (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (5)
1. a pipe, tube sheetbrace angle weld seam ray detection photohead, comprise exposure tube, the end cap be connected with exposure tube, exposure tube inside has for the passage by radiographic source pigtail, it is characterized in that, described exposure tube far-end outer wall is provided with external thread, this photohead also includes fixed block, the internal thread hole coordinated with described exposure tube far-end external thread is had in fixed block, fixed block outside surface matches with caliber shape and size to be measured, on exposure tube outer wall, between fixed block and end cap, cover has multiple compensation block, the through hole coordinated with exposure tube outer wall is had in compensation block, compensation block outside surface matches with caliber shape and size to be measured,
Have a through hole at the far-end of exposure tube, the diameter of through hole is less than for the passage by radiographic source pigtail, is provided with internal thread in through hole, and described photohead also comprises a solid adjuster bar, and this adjuster bar has the external thread with the screw-internal thread fit in described through hole.
2. pipe according to claim 1, tube sheetbrace angle weld seam ray detection photohead, it is characterized in that: described end cap and exposure tube are threaded connection, exposure tube outer wall is provided with external thread, and end cap is provided with internal thread, and the two is connected.
3. pipe according to claim 2, tube sheetbrace angle weld seam ray detection photohead, is characterized in that: the termination that described end cap is connected with defeated source capsule is plug-type syndeton.
4. pipe according to claim 2, tube sheetbrace angle weld seam ray detection photohead, is characterized in that: the termination that described end cap is connected with defeated source capsule is screw connection structure.
5. pipe according to claim 2, tube sheetbrace angle weld seam ray detection photohead, is characterized in that: described exposure tube, fixed block, compensation block and end cap are stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310048945.6A CN103149221B (en) | 2013-02-07 | 2013-02-07 | Pipe, pipe sheet fillet weld radiographic detection exposure head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310048945.6A CN103149221B (en) | 2013-02-07 | 2013-02-07 | Pipe, pipe sheet fillet weld radiographic detection exposure head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103149221A CN103149221A (en) | 2013-06-12 |
| CN103149221B true CN103149221B (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310048945.6A Active CN103149221B (en) | 2013-02-07 | 2013-02-07 | Pipe, pipe sheet fillet weld radiographic detection exposure head |
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| Country | Link |
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| CN (1) | CN103149221B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569007B (en) * | 2015-01-30 | 2018-02-02 | 广东华泰检测科技有限公司 | Posted sides pipeline butt weld center exposure device |
| CN110618147B (en) * | 2019-10-25 | 2022-07-05 | 东方电气集团东方锅炉股份有限公司 | System and method for measuring height of incomplete penetration defect of tube-tube plate fillet weld |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1272404A (en) * | 1968-10-16 | 1972-04-26 | Atomic Energy Authority Uk | Improvements in or relating to the radiography of welds |
| KR200377998Y1 (en) * | 2004-12-07 | 2005-03-11 | 주식회사 한국공업엔지니어링 | A radiographic testing equipment for heat exchange |
| CN2890903Y (en) * | 2006-02-07 | 2007-04-18 | 国电电力建设研究所海门探伤设备联营厂 | Micro-focus gamma ray flaw detector |
| JP5145979B2 (en) * | 2008-01-31 | 2013-02-20 | 住友化学株式会社 | Radiation transmission test method for welds |
| CN203053894U (en) * | 2013-02-07 | 2013-07-10 | 四川蓝星机械有限公司 | Tube and tube plate fillet welding line radiographic detection exposure head |
-
2013
- 2013-02-07 CN CN201310048945.6A patent/CN103149221B/en active Active
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| CN103149221A (en) | 2013-06-12 |
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