CN103149221A - 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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- CN103149221A CN103149221A CN2013100489456A CN201310048945A CN103149221A CN 103149221 A CN103149221 A CN 103149221A CN 2013100489456 A CN2013100489456 A CN 2013100489456A CN 201310048945 A CN201310048945 A CN 201310048945A CN 103149221 A CN103149221 A CN 103149221A
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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 utilize the device of 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 are made, it is a great problem that the fillet welding weldquality at the tube-to-tubesheet joint place of tubular heat exchanger detects, due to the measured object narrow field, on-the-spot adaptive faculty is poor, and in conventional ray detection, Ultrasonic Detection butt welded seam, the weld defects such as pore slag inclusion can't effectively be monitored.Weld seam fault in device fabrication and hidden danger can cause equipment to leak in use for some time, cause and can't normally move and the repairing that stops production, and cause heavy economic losses.
for the fillet welding weldquality detection to the tube-to-tubesheet joint place, Chinese utility model patent 200620069212.6 discloses a kind of micro-focus gamma ray flaw detector and has put 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 the output end cap through front locking disc at its front end, in its back-end through after lockweight be fixedly connected with carrying sleeve, being provided with coaxial conveying lever in the conveying sleeve is connected movingly with carrying sleeve, place duct and the exposure tube of gamma ray projector pigtail in the depleted uranium pipe, carry sleeve on same straight channel axis.The utility model is applied to electric power, machinery, chemical plant manufacturing field and is used for surveying weldquality.Its advantage is highly sensitive, and the defectives such as little pore, slag inclusion to 0.5 millimeter can detect, and reliable results, and Test Field adaptability is good, and is flexible.The weak point of this scheme is: need operating personnel directly to operate before defectoscope, can increase like this operating personnel's radiation dose, health is caused certain infringement.
Summary of the invention
The objective 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 that is connected with exposure tube, exposure tube inside has for the passage by the 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 that coordinates with described exposure tube far-end external thread is arranged in fixed block, the fixed block outside surface matches with caliber shape and size to be measured, on the exposure tube outer wall, between fixed block and end cap, cover has a plurality of compensation blocks, the through hole that coordinates with the exposure tube outer wall is arranged in compensation block, the 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, far-end in exposure tube has a through hole, and the diameter of through hole is provided with internal thread less than the passage that is used for by the radiographic source pigtail in through hole, described photohead also comprises a solid adjuster bar, this adjuster bar have with described through hole in the external thread of screw-internal thread fit.
Preferably, described end cap and exposure tube are threaded connection, and the exposure tube outer wall is provided with external thread, and end cap is provided with internal thread, both is connected.
Preferably, the termination that is connected with defeated source capsule of described end cap is plug-type syndeton.
Preferably, the termination that is connected with defeated source capsule of described end cap 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 the transillumination field operation, can satisfy different tube diameters again, wall thickness, pipe compartment is apart from the pipe fillet weld, and contraposition is convenient, accurately special photohead device.
Description of drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is the exposure tube schematic diagram partly of the photohead of the embodiment of the present invention.
Fig. 2 is the cut-open view of 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 end cap of the photohead of the embodiment of the present invention.
Embodiment
As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 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 the radiographic source pigtail, the diameter of passage 2 is 7mm, and length is 40mm, and the focal length that is applicable to expose is the situation of 40mm.External thread 3 on described exposure tube 1 far-end outer wall coordinates with stainless fixed block 5, fixed block 5 coordinates with described exposure tube 1 far-end external thread by its internal female hole, fixed block 5 outside surfaces match with caliber shape and size to be measured, and fixed block 5 external diameters get final product than the little 0.5mm of caliber to be measured.On exposure tube 1 outer wall, between fixed block 5 and end cap 9, cover has a plurality of stainless compensation blocks 6, the through hole that coordinates with the exposure tube outer wall is arranged in compensation block 6, and compensation block 6 outside surfaces match with caliber shape and size to be measured, and its external diameter gets final product than the little 0.5mm of caliber to be measured.
This routine photohead goes for the detection of the common specification heat exchanger tube of bore≤18mm, and is easy to use, and 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 the radiographic source pigtail, the diameter of passage 2 is 7mm, and length is 80mm.At described exposure tube 1 far-end, one through hole 7 is arranged, the diameter of through hole 7 is less than the diameter that is used for by the passage 2 of radiographic source pigtail, it is the through hole 7 that is provided with the M4 screw thread in adopting in this example, described photohead also comprises an adjuster bar 8 accordingly solid with described through hole 7, the long 120mm of adjuster bar 8, this adjuster bar 8 have with described through hole 7 in the external thread of screw-internal thread fit, by the position of adjusting adjuster bar 8 in through hole 7, can regulate the length of passage 2, and then regulate arbitrarily the exposure focal length 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 coordinates with described exposure tube 1 far-end external thread by its internal female hole, fixed block 5 outside surfaces match with caliber shape and size to be measured, and fixed block 5 external diameters get final product than the little 0.5mm of caliber to be measured.On exposure tube 1 outer wall, between fixed block 5 and end cap 9, cover has a plurality of stainless compensation blocks 6, the through hole that coordinates with the exposure tube outer wall is arranged in compensation block 6, and compensation block 6 outside surfaces match with caliber shape and size to be measured, and its external diameter gets final product than the little 0.5mm of caliber to be measured.The photohead of focal length, be applicable to the detection of all size heat exchanger tube arbitrarily.Difficulty of processing is larger, is widely used.
Fig. 6 is for connecting photohead and defeated source capsule end plate 9, and it is connected employing silk mouth and connects with photohead, is connected with defeated source capsule to be designed to fast connecting structure 11, and convenient connection also can be made the silk mouth and be connected.
Disclosed all features in this instructions, or the step in disclosed all methods or process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this instructions (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or similar characteristics.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (6)
1. pipe, tube sheetbrace angle weld seam ray detection photohead, comprise exposure tube, the end cap that is connected with exposure tube, exposure tube inside has for the passage by the 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 that coordinates with described exposure tube far-end external thread is arranged in fixed block, the fixed block outside surface matches with caliber shape and size to be measured, on the exposure tube outer wall, between fixed block and end cap, cover has a plurality of compensation blocks, the through hole that coordinates with the exposure tube outer wall is arranged in compensation block, the compensation block outside surface matches with caliber shape and size to be measured.
2. pipe according to claim 1, tube sheetbrace angle weld seam ray detection photohead, it is characterized in that: the far-end in exposure tube has a through hole, the diameter of through hole is less than the passage that is used for by the radiographic source pigtail, be provided with internal thread in through hole, described photohead also comprises a solid adjuster bar, this adjuster bar have with described through hole in the external thread of screw-internal thread fit.
3. pipe according to claim 1 and 2, tube sheetbrace angle weld seam ray detection photohead, it is characterized in that: described end cap and exposure tube are threaded connection, and the exposure tube outer wall is provided with external thread, and end cap is provided with internal thread, both is connected.
4. pipe according to claim 3, tube sheetbrace angle weld seam ray detection photohead, it is characterized in that: the termination that described end cap is connected with defeated source capsule is plug-type syndeton.
5. pipe according to claim 3, tube sheetbrace angle weld seam ray detection photohead, it is characterized in that: the termination that described end cap is connected with defeated source capsule is screw connection structure.
6. pipe according to claim 3, tube sheetbrace angle weld seam ray detection photohead, it 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 |
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| Publication Number | Publication Date |
|---|---|
| CN103149221A true CN103149221A (en) | 2013-06-12 |
| CN103149221B CN103149221B (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310048945.6A Active CN103149221B (en) | 2013-02-07 | 2013-02-07 | Pipe, pipe sheet fillet weld radiographic detection exposure head |
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| CN (1) | CN103149221B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569007A (en) * | 2015-01-30 | 2015-04-29 | 广东华泰检测科技有限公司 | Thick-wall pipeline butt welding center exposure device |
| CN110618147A (en) * | 2019-10-25 | 2019-12-27 | 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 |
Citations (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 |
| JP2009180647A (en) * | 2008-01-31 | 2009-08-13 | Sumitomo Chemical Co Ltd | Radiographic testing method of welding section |
| 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
Patent Citations (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 |
| JP2009180647A (en) * | 2008-01-31 | 2009-08-13 | Sumitomo Chemical Co Ltd | Radiographic testing method of welding section |
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| 姚炫东 等: "热交换器管子-管板角焊缝的射线检测", 《无损检测》 * |
| 百度文库: "管道γ射线曝光工法", 《百度文库》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569007A (en) * | 2015-01-30 | 2015-04-29 | 广东华泰检测科技有限公司 | Thick-wall pipeline butt welding center exposure device |
| 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 |
| CN110618147A (en) * | 2019-10-25 | 2019-12-27 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103149221B (en) | 2015-07-15 |
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