CN203718276U - Drawing core expansion type mechanical end cap for heat transfer pipe - Google Patents
Drawing core expansion type mechanical end cap for heat transfer pipe Download PDFInfo
- Publication number
- CN203718276U CN203718276U CN201320864992.3U CN201320864992U CN203718276U CN 203718276 U CN203718276 U CN 203718276U CN 201320864992 U CN201320864992 U CN 201320864992U CN 203718276 U CN203718276 U CN 203718276U
- Authority
- CN
- China
- Prior art keywords
- transfer pipe
- upper barrel
- upper cylinder
- barrel
- drawing core
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract description 3
- 238000003466 welding Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- -1 Inconel800 Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910001055 inconels 600 Inorganic materials 0.000 description 1
- 229910001098 inconels 690 Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Abstract
The utility model discloses a drawing core expansion type mechanical end cap for a heat transfer pipe. The drawing core expansion type mechanical end cap comprises an upper barrel and a lower barrel which are communicated, wherein the top end of the upper barrel is sealed; the lower end of the lower barrel is opened; the inner diameter of the top end of the upper barrel and the inner diameter of the lower barrel are identical; the inner diameter from the top end of the upper barrel to the tail end of the upper barrel is gradually reduced; a sliding block which is matched with the inner diameter of the upper barrel and is capable of vertically sliding along the inner wall of the upper barrel is arranged in the upper barrel. According to the drawing core expansion type mechanical end cap for the heat transfer pipe, the upper barrel and the lower barrel which are communicated are arranged, the sliding block is arranged in the upper barrel, the inner diameter of the sliding block is matched with the inner diameter of the upper barrel and the sliding block is capable of vertically moving along the inner wall of the upper barrel; a micro locking design is adopted, rapid maintenance and installation are realized, the material of the end cap and the material of the heat transfer pipe are consistent and higher in resistance to corrosion, detachment is easy, the inner wall of the blocked heat transfer pipe is not damaged, mechanical complex flaw detection is not needed after the pipe is blocked, automatic pipe blockage is realized in long distance, and personnel are prevented from being subjected to nuclear radiation.
Description
Technical field
The utility model belongs to Nuclear Power Technology field, is specifically related to drawing core expanding machinery plug for a kind of heat-transfer pipe.
Background technique
Nuclear power is mainly comprised of nuclear reactor, steam generator, Turbo-generator Set three parts, the Main Function of steam generator is the heat of water in a loop to be passed to the water of secondary circuit, and the bottom of steam generator evaporator section is to consist of inverted thousands of U-shaped heat-transfer pipes.The corrosion breakage of steam generator heat-transfer pipe is the principal element of Nuclear Power System unplanned shutdown always.In order to guarantee the reliability of Nuclear Power System steam generator in service, from that day of manufacturing and putting into operation, will follow the tracks of, assess the runnability of steam generator, pinpoint the problems and will study in time, solve, the impurity that mainly contains steam generator heat-transfer pipe removes and in-service detection, get pipe, repairing bushing pipe and plugging etc.Two during the last ten years, and various countries have adopted different plugging technology, as welding plugging and mechanical plugging.
The in-service Nuclear Power System of China is used through operation for many years at present, there is the breakage of some because of reasons such as corrosion in its steam generator heat-transfer pipe, China is all to adopt directly welding plugging method that damaged heat-transfer pipe termination welding is shut following the tracks of, checking after finding.Welding plugging belongs to permanent plugging technology, welding plugging process need maintenance man enters core radiation area and carries out for a long time artificial welding operation, maintenance man is injured greatly, welding quality needs complicated detection just can guarantee the validity of plugging simultaneously, welding plugging process can not realize automation mechanized operation, in maintenance process, Nuclear Power System needs long-time stagnation work, has a strong impact on the use on duty of weaponry.Welding plugging mode is because it is backward in technique, the industrially developed country such as the U.S., Russia, France, Germany are being used, then developed advanced mechanical plugging mode, the drawing core expanding plug of machinery plugging easily takes out, after technology maturation, also can carry out bushing pipe or reuse under the premise that security is guaranteed the heat-transfer pipe that band damages the pipe that is blocked later, therefore be widely adopted.
Model utility content
The purpose of this utility model is to propose drawing core expanding machinery plug for a kind of heat-transfer pipe, and it is easy to dismounting, does not damage the heat-transfer pipe inwall being blocked, and does not need the complicated flaw detection of machinery after plugging.
For achieving the above object, the utility model adopts following technological scheme:
The utility model comprises upper cylinder and the lower cylinder body being connected, described upper cylinder top closure, lower cylinder body lower ending opening, upper cylinder top internal diameter is identical with lower cylinder body internal diameter, upper cylinder top to end internal diameter dwindles gradually, is provided with the slide block that matches and can move up and down along upper cylinder inwall with upper cylinder internal diameter in upper cylinder.
On the outer wall of described upper cylinder, offer some grooves.
Described groove is circumferentially offered along upper cylinder.
Described slide block lower end is provided with nut.
Described slide block lower end is chamfering structure.
With respect to prior art, the beneficial effect the utlity model has: the upper cylinder that the utility model is connected by setting and lower cylinder body, slide block is set in upper cylinder, slide block internal diameter and upper cylinder internal diameter match and can move up and down along upper cylinder inwall, the utility model adopts micro-lock design, can realize rapid-maintenance installs, plug material is consistent with heat-transfer pipe material and have a high corrosion resistance, be easy to dismounting, do not damage the heat-transfer pipe inwall being blocked, after plugging, do not need the complicated flaw detection of machinery, can realize at a distance automatic plugging, avoided personnel to be subject to nuclear radiation.
Accompanying drawing explanation
Fig. 1 is longitudinal section of the present utility model tectonic maps;
Fig. 2 is drawing core expanding machinery plug plugging schematic diagram;
Wherein, 1 is upper cylinder, and 2 is lower cylinder body, and 3 is slide block, and 4 is groove, and 5 is damaged heat-exchange tube; 6 is exchanging tube installation base plate; 7 is thread; 8 is sleeve baffle plate.
Embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated.
Referring to Fig. 1, the utility model comprises upper cylinder 1 and lower cylinder body 2, described upper cylinder 1 and lower cylinder body 2 are connected, upper cylinder 1 top closure, lower cylinder body 2 lower ending openings, upper cylinder 1 top internal diameter is identical with lower cylinder body 2 internal diameters, upper cylinder 1 top to end internal diameter dwindles gradually, in upper cylinder 1, be provided with the slide block 3 that matches and can move up and down along upper cylinder 1 inwall with upper cylinder 1 internal diameter, on the outer wall of upper cylinder 1, offer some grooves 4, groove 4 edge on upper cylinder 1 outer wall is circumferentially offered, between some grooves 4 by gap, the lower end of slide block 3 is provided with nut, the lower end of slide block is chamfering structure, be beneficial to the movement of slide block.
Referring to Fig. 2, process of the present utility model is: during plugging, adopt mounting tool-thread 7 that plug is inserted in damaged heat-exchange tube 5 terminations, damaged heat-exchange tube 5 is arranged on exchanging tube installation base plate 6, adopt sleeve baffle plate 8 to fix lower cylinder body 2, thread 7 is screwed in the nut of slide block 3, thread 7 is connected with slide block 3, then pull down movable slider 3, slide block 3 extruding upper cylinder 1 inwalls make it to dilate plastic deformation, upper cylinder 1 outer wall external diameter becomes greatly and heat-transfer pipe inwall fits tightly, reach the effect of plugging sealing, the thread that unloads frock after plugging completes completes plugging work.The utility model also can carry out bushing pipe or reuse under the premise that security is guaranteed the heat-transfer pipe that band damages the pipe that is blocked, while shedding plug, to in the nut of the thread screw-in slide block of frock, make it to connect equally, then upwards promote slide block 3, slide block 3 is fallen the innermost end of upper cylinder, upper cylinder 1 inwall of extruding plug is no longer stressed, can use a little external force that mechanical plug is dismantled, and can not cause damage to heat-transfer pipe.
Wei Shi China realizes mechanical plugging at the nuclear power steam generator heat-transfer pipe of new generation grinding after damaged or inefficacy, according to mechanical plugging general principle the utility model, has designed a kind of drawing core expanding machinery plug.In the utility model, the principle of mechanical plugging is mechanical plug is inserted into steam generator broken invalid or is about in the heat-transfer pipe termination of broken invalid, then adopt external force to make mechanical plug external diameter expansion generation plastic deformation, thereby make the outer wall of mechanical plug and heat-transfer pipe inwall closely be adjacent to the effect that reaches sealing plugging.
Blind pipe of the upper cylinder being connected and lower cylinder body, the material adopting is consistent with Nuclear Power System steam generator heat-transfer pipe material therefor, be generally the alloys such as Inconel690, Inconel800, Inconel600, slide block is placed in upper cylinder inside, generally adopts titanium alloy material or stainless steel material that hardness is relatively high.
Claims (5)
1. drawing core expanding machinery plug for a heat-transfer pipe, it is characterized in that, comprise the upper cylinder (1) and the lower cylinder body (2) that are connected, described upper cylinder (1) top closure, lower cylinder body (2) lower ending opening, upper cylinder (1) top internal diameter is identical with lower cylinder body (2) internal diameter, upper cylinder (1) top dwindles gradually to end internal diameter, is provided with and upper cylinder (1) internal diameter matches and the slide block (3) that can move up and down along upper cylinder (1) inwall in upper cylinder (1).
2. drawing core expanding machinery plug for a kind of heat-transfer pipe according to claim 1, is characterized in that, offers some grooves (4) on the outer wall of described upper cylinder (1).
3. drawing core expanding machinery plug for a kind of heat-transfer pipe according to claim 2, is characterized in that, described groove (4) is circumferentially offered along upper cylinder (1).
4. drawing core expanding machinery plug for a kind of heat-transfer pipe according to claim 1, is characterized in that, described slide block (3) lower end is provided with nut.
5. according to drawing core expanding machinery plug for a kind of heat-transfer pipe described in claim 1 or 4, it is characterized in that, described slide block (3) lower end is chamfering structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320864992.3U CN203718276U (en) | 2013-12-25 | 2013-12-25 | Drawing core expansion type mechanical end cap for heat transfer pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320864992.3U CN203718276U (en) | 2013-12-25 | 2013-12-25 | Drawing core expansion type mechanical end cap for heat transfer pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203718276U true CN203718276U (en) | 2014-07-16 |
Family
ID=51157426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320864992.3U Expired - Lifetime CN203718276U (en) | 2013-12-25 | 2013-12-25 | Drawing core expansion type mechanical end cap for heat transfer pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203718276U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501855A (en) * | 2014-12-15 | 2015-04-08 | 钢铁研究总院 | Sample device and method for testing tube-plugging effect of heat-transferring tube of vapor generator |
| CN105810269A (en) * | 2014-12-31 | 2016-07-27 | 国核电站运行服务技术有限公司 | Heat-transfer pipe blocking tool of nuclear power heat exchanger |
| CN105798542A (en) * | 2014-12-31 | 2016-07-27 | 国核电站运行服务技术有限公司 | Machining method for plug in heat transfer pipe of heat exchanger |
-
2013
- 2013-12-25 CN CN201320864992.3U patent/CN203718276U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501855A (en) * | 2014-12-15 | 2015-04-08 | 钢铁研究总院 | Sample device and method for testing tube-plugging effect of heat-transferring tube of vapor generator |
| CN105810269A (en) * | 2014-12-31 | 2016-07-27 | 国核电站运行服务技术有限公司 | Heat-transfer pipe blocking tool of nuclear power heat exchanger |
| CN105798542A (en) * | 2014-12-31 | 2016-07-27 | 国核电站运行服务技术有限公司 | Machining method for plug in heat transfer pipe of heat exchanger |
| CN105798542B (en) * | 2014-12-31 | 2018-06-01 | 国核电站运行服务技术有限公司 | The processing method of plug in a kind of heat transfering tube of heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Lijun Inventor after: Hu Huihua Inventor after: Xue Xiangyi Inventor after: Liao Changbin Inventor after: Li Jinshan Inventor after: Gong Weimin Inventor after: Cheng Tan Inventor after: Zhou Zhongbo Inventor after: Shao Bo Inventor before: Zhang Lijun Inventor before: Xue Xiangyi Inventor before: Zhu Pengchao Inventor before: Li Mingsheng Inventor before: Li Jinshan |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170728 Address after: 710016 No. seven, 92 Fengcheng Road, Xi'an economic and Technological Development Zone, Shaanxi, China Co-patentee after: RESEARCH INSTITUTE OF NUCLEAR POWER OPERATION Patentee after: XI'AN SUPERCRYSYAL SCI-TECH DEVELOPMENT Co.,Ltd. Co-patentee after: CHINA NUCLEAR POWER OPERATION TECHNOLOGY Corp.,Ltd. Address before: 710016 Xi'an economic and Technological Development Zone, Fengcheng, China, No. seven road, Shaanxi Patentee before: XI'AN SUPERCRYSYAL SCI-TECH DEVELOPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 710016 No.92, Fengcheng 7th Road, Xi'an Economic and Technological Development Zone, Shaanxi Province Patentee after: Xi'an Supercrystalline Technology Co.,Ltd. Patentee after: RESEARCH INSTITUTE OF NUCLEAR POWER OPERATION Patentee after: CHINA NUCLEAR POWER OPERATION TECHNOLOGY Corp.,Ltd. Address before: 710016 No.92, Fengcheng 7th Road, Xi'an Economic and Technological Development Zone, Shaanxi Province Patentee before: XI'AN SUPERCRYSYAL SCI-TECH DEVELOPMENT Co.,Ltd. Patentee before: RESEARCH INSTITUTE OF NUCLEAR POWER OPERATION Patentee before: CHINA NUCLEAR POWER OPERATION TECHNOLOGY Corp.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 710299 No. 10, East Section of Jinggao North Road, Jingwei New City, Xi'an Economic and Technological Development Zone, Shaanxi Province Patentee after: Xi'an Supercrystalline Technology Co.,Ltd. Patentee after: RESEARCH INSTITUTE OF NUCLEAR POWER OPERATION Patentee after: CHINA NUCLEAR POWER OPERATION TECHNOLOGY Corp.,Ltd. Address before: 710016 No.92, Fengcheng 7th Road, Xi'an Economic and Technological Development Zone, Shaanxi Province Patentee before: Xi'an Supercrystalline Technology Co.,Ltd. Patentee before: RESEARCH INSTITUTE OF NUCLEAR POWER OPERATION Patentee before: CHINA NUCLEAR POWER OPERATION TECHNOLOGY Corp.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |
|
| CX01 | Expiry of patent term |