CN201867394U - Locking air pawl for positioning eddy detecting tube plate of steam generator in nuclear power station - Google Patents
Locking air pawl for positioning eddy detecting tube plate of steam generator in nuclear power station Download PDFInfo
- Publication number
- CN201867394U CN201867394U CN2010206154335U CN201020615433U CN201867394U CN 201867394 U CN201867394 U CN 201867394U CN 2010206154335 U CN2010206154335 U CN 2010206154335U CN 201020615433 U CN201020615433 U CN 201020615433U CN 201867394 U CN201867394 U CN 201867394U
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- 230000004308 accommodation Effects 0.000 claims description 8
- 230000008602 contraction Effects 0.000 claims description 7
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- 238000005096 rolling process Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 abstract description 2
- 241001391944 Commicarpus scandens Species 0.000 abstract 1
- 238000012546 transfer Methods 0.000 description 8
- 230000002950 deficient Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a locking air pawl for positioning an eddy detecting tube plate of a steam generator in a nuclear power station, comprising an outer air cylinder, and an inner air cylinder and a petal head which are arranged in the outer air cylinder, wherein a cylinder body of the inner air cylinder and a piston bush of the outer cylinder are shared, a spiral air tube used for controlling the piston bush and an inner piston to move up and down is arranged in the outer air cylinder, and according to a manner that the air tube and the inner air cylinder are sealed in the outer air cylinder by the extension of the outer air cylinder, the detect that an existing movable air cylinder is easy to break the air tube in a clamping way is overcome, simultaneously, the air tube adopts a spiral elastic air tube, so that the disordered winding between the air tubes is avoided, the whole locking air pawl is integral, compact in structure and safer in use.
Description
Technical field
The utility model relates to eddy current inspection tube sheet positioning and locking gas jaw arrangement under the nuclear power station steam generator particular surroundings.
Background technology
Steam generator is used to finish the exchange heat of nuclear power station presurized water reactor one, secondary circuit, and it is very important to the safe operation of nuclear power unit.Thermal energy transfer in the nuclear power unit is mainly finished by U type heat-transfer pipe, and in operational process, heat-transfer pipe and tube sheet junction are easy to defective such as concentrate because of the effect that is given a shock, weares and teares produces fatigue crack, stress.Owing to be subjected to the influence of high temperature, high pressure, also easily produce corrosion default herein.Therefore fatigue, the burn into stress that can in time find heat-transfer pipe and tube sheet junction such as concentrates at defective, is extremely important for the long-term safety operation of nuclear power station.In in-Service Inspection of Nuclear Power Station standard and outline, all the heat-transfer pipe vortex inspection is classified as emphasis follow-up investigations object, can be utilized the robotization eddy detection technology that it is spot-check analysis in the periodic maintenance in nuclear power station every year.
At present, known nuclear power station steam generator eddy current inspection locating device has two kinds, first kind is at the low head hydroecium manhole flange place of steam generator mechanical hook-up to be installed, go deep into steam generator low head hydroecium inside, be implemented on the tube sheet by mechanical arm and locate, it comprises outside fix flange assembly, bearing support assembly, lower rotatory arm, goes up spiral arm, pivot arm etc., and this kind device exists installs complexity, locatees inaccurate defective.Second kind is to utilize hoistable platform that the small-sized machine device is installed on the inner tube sheet of steam generator from manhole, is implemented in the location of creeping on the tube sheet by locking gas pawl and stepping mechanism.But, existing locking gas pawl, its inner casing is exposed outside, in the air cylinder driven process, its air supply pipe easily twines mutually and produces pinch off, simultaneously, is limited to the particular surroundings in the high-temperature steam generator, in the use, there is bigger potential safety hazard in locking gas pawl vulnerable to pollution.
Summary of the invention
The utility model purpose provides the locking gas pawl of a kind of compact conformation, integral structure safe in utilization.
For achieving the above object, the technical solution adopted in the utility model is: a kind of nuclear power station steam generator eddy current inspection tube sheet positioning and locking gas pawl, and it comprises,
Outside cylinder, described outside cylinder comprises outer cylinder body, can slide up and down to be arranged in the outer cylinder body and have the piston bush of inner chamber, have the outer stroke space between described piston bush upper end and the outer cylinder body, have accommodation space between described piston bush lower end and the outer cylinder body;
Inside cylinder, it comprises the inner cylinder body that formed by piston bush, can slide up and down to be arranged on inner carrier in the piston bush, be fixedly connected with inner carrier and front end is the central shaft of taper, and described inner carrier is separated into inner chamber, lower inner cavity with described piston bush inner chamber;
The petal head, it is set on the described central shaft, and the upper end of its lower end and piston bush is fixedly connected, move axially down at described central shaft, described petal head open with contraction state under change;
Described outside cylinder sidepiece offers first air intake opening that is connected with described outer stroke space, and described outside cylinder bottom offers respectively second air intake opening and the 3rd air intake opening that is connected and is connected by last inner chamber and the lower inner cavity that is arranged in corrugated hose and the piston bush in the accommodation space.
In optimally implementing, between described inner carrier and the piston bush inwall first elastic component is installed according to technique scheme institute.Further, offer groove respectively between described inner carrier and the piston bush inwall, the described first elastic component two ends are embedded in groove respectively.
Be arranged with second elastic component on the described corrugated hose.
Described central shaft tapered front end also is fixedly connected with when the petal head is in contraction state the sleeve boss of petal head front end being accommodated wherein.
The tapering point border of described central shaft is provided with and is used for the ball that contacts with rolling with described petal head.
Owing to adopt technique scheme, advantage of the present utility model has: thus the utility model locking gas pawl adopts the outer inside casing body extension tracheae and inside cylinder sealing mode within it, overcome the defective of the easy pinch off tracheae of existing moving cylinder, simultaneously, tracheae adopts the spiral elasticity tracheae, has avoided the unordered winding between the tracheae, and whole locking gas pawl is rendered as one, compact conformation uses safer.
Description of drawings
Accompanying drawing 1 is in the open configuration perspective view for the utility model locking gas pawl;
Accompanying drawing 2 is the gas of locking shown in the accompanying drawing 1 a pawl front elevation;
Accompanying drawing 3 is an A-A place cut-open view in the accompanying drawing 2;
Accompanying drawing 4 is in the contraction state perspective view for the utility model locking gas pawl;
Accompanying drawing 5 is a locking gas pawl front elevation in the accompanying drawing 4;
Accompanying drawing 6 is a B-B place cut-open view in the accompanying drawing 5;
Wherein: 1, outside cylinder; 11, outer cylinder body; 111, first air intake opening; 112, second air intake opening; 113, the 3rd air intake opening; 12, piston bush; 121, inner chamber; 1211, go up inner chamber; 1212, lower inner cavity; 122, outer stroke space; 123, accommodation space; 13, spiral tracheae; 14, second elastic component; 2, inside cylinder; 21, inner carrier; 22, central shaft; 23, first elastic component; 24, groove; 3, petal head; 4, sleeve boss; 5, ball.
Embodiment
Below in conjunction with accompanying drawing, the mode of enforcement that the utility model is optimized is described in further detail:
As Fig. 1, Fig. 2 and Fig. 4, locking gas pawl shown in Figure 5, it is the cylinder body of cuboid by one and forms with the petal head 3 that is convexly equipped with on cylinder body, wherein, this cuboid cylinder body mainly is made up of outside cylinder 1 and inside cylinder 2, referring to Fig. 3 and Fig. 6, outside cylinder 1 comprises the outer cylinder body 11 of cuboid, be horizontally installed in the outer cylinder body 11 and have the piston bush 12 of inner chamber 121, the outer stroke space 122 that has between the upper end of piston bush 12 and the outer cylinder body 11, have accommodation space 123 between the lower end of piston bush 12 and the outer cylinder body 11, piston bush 12 can slide up and down in outer stroke space 122 and accommodation space 123.Simultaneously, sidepiece at outer cylinder body 11 also is provided with first air intake opening 111 that is connected with outer stroke space 122, can directly ventilate in outer stroke space 122 by this first air intake opening 111, along with the variation of gas in the outer stroke space 122, piston bush 12 will be subjected to displacement variation up and down.Also offer two air intake openings in the bottom of outer cylinder body 11, be respectively second air intake opening 112 and the 3rd air intake opening 113, in the accommodation space 123 of outer cylinder body 11, be connected with a spiral elasticity soft air pipe 13 respectively with second air intake opening 112 and the 3rd air intake opening 113, on tracheae 13, be arranged with second elastic component 14, when moving downward, piston bush 12 make second elastic component 14 by compression, when 14 recoveries of second elastic component, piston bush 12 is pushed upwardly.
The cylinder body of inside cylinder 2 is realized by the piston bush 12 of outside cylinder 1, be horizontally arranged with inner carrier 21 at piston bush 12, so separation by inner carrier 21, the inner chamber 121 of piston bush 12 has been divided into last inner chamber 1211 and lower inner cavity 1212, last inner chamber 1211 is connected by described spiral tracheae 13 with second air intake opening 112 and is connected, lower inner cavity 1212 is connected by another spiral tracheae 13 with the 3rd air intake opening 113 and is connected, on the downside of inner carrier 21 and piston bush 12 inwalls relative, offer groove 24, be embedded with first elastic component 23 in the groove 24 with inner carrier 21 downsides.
The fixedly connected central shaft 22 in inner carrier 21 upper ends, the front end of this central shaft 22 is tapered, petal head 3 is set on this central shaft 22, and the upper end of the lower end of petal head 3 and piston bush 12 is fixedly connected, like this, when the inner carrier 21 of inside cylinder 2 slides up and down, central shaft 22 will move along its axis, and boost when central shaft 22, and its tapered front end passes the front end of petal head 3, then the petal head is opened and is in open configuration, as shown in Figure 3; When moving downward of central shaft 22, its tapered front end is positioned at petal head 3 inside, and then petal head 3 recovers to draw close to be contraction-like under resilient force together, as shown in Figure 6.When feeding gas by first air intake opening 111, under the effect of gas, outer stroke space 122 pressure of outer cylinder body 11 increase, and will drive whole piston bush 12 and move downward, thereby central shaft 22 is moved down synchronously together with petal head 3.
In order further to limit the shrinkage degree of petal head 3, in the present embodiment,, be under the contraction state at petal head 3 at the also fixedly connected sleeve boss 4 of central shaft 22 tapered front end, the front end of petal head 3 is fastened in the sleeve boss 4.Simultaneously, sleeve boss 4 also has guide effect, prevents to lock to damage its inwall when gas pawl front end enters in the heat-transfer pipe.
And in the present embodiment,, be embedded with a plurality of balls 5 in the border of central shaft 22 tapered front end in order to reduce the friction between petal head 3 front ends and central shaft 22 front ends.
To the course of work that present embodiment is locked the gas pawl be made a presentation below:
Locking gas pawl is when state of nature, petal head 3 is in open configuration, central shaft 22 tapered front end are stretched out petal head 3, as shown in Figure 1 to Figure 3, when needs use this locking gas pawl to position, at first, from the outside to second air intake opening, 112 air feed, gas enters in the last inner chamber 1211 of inside cylinder 2 by corresponding volute spring tracheae 13, the inside cylinder inflation, make inner carrier 21 move downward, first elastic component 23 is compressed, inner carrier 21 drives central shaft 22 and moves downward, on central shaft 22, petal head 3 is contraction state on the central shaft taper surface, extremely shown in Figure 6 as Fig. 4, at this moment, the gas pawl is pushed in the corresponding heat-transfer pipe, by the 3rd air intake opening 113 air feed in the lower inner cavity 1212 of inside cylinder 2, make inner carrier 21 be pushed upwardly then, petal head 3 is opened once more, ventilate in the outer stroke space 122 of outer cylinder body 11 from first air intake opening 111 once more, open petal head 3 is spurred certain distance downwards synchronously with central shaft 22, thereby is positioned on the heat transfer pore, promptly finishes the location of locking gas pawl.When finishing the inspection operation, exhaust also utilizes elastic component elastic force to make the gas pawl return to state of nature to get final product.Above-mentioned a few step ventilation action can hocket, and finally is implemented in locking gas pawl and locks in pipe, fixes, unclamps.
The foregoing description is to explanation of the present utility model, is not to qualification of the present utility model, as can selecting the connection of metal good conductor connecting plate according to on-site actual situations, any scheme after the utility model simple transformation is all belonged to protection domain of the present utility model.
Claims (6)
1. nuclear power station steam generator eddy current inspection tube sheet positioning and locking gas pawl is characterized in that: it comprises,
Outside cylinder (1), described outside cylinder (1) comprises outer cylinder body (11), can slide up and down to be arranged in the outer cylinder body (11) and have the piston bush (12) of inner chamber (121), have outer stroke space (122) between described piston bush (12) upper end and the outer cylinder body (11), have accommodation space (123) between described piston bush (12) lower end and the outer cylinder body (11);
Inside cylinder (2), it comprises the inner cylinder body that formed by piston bush (12), can slide up and down to be arranged on inner carrier (21) in the piston bush (12), be fixedly connected with inner carrier (21) and front end is the central shaft (22) of taper, and described inner carrier (21) is separated into inner chamber (1211), lower inner cavity (1222) with described piston bush (12) inner chamber (121);
Petal head (3), it is set on the described central shaft (22), and the upper end of its lower end and piston bush (12) is fixedly connected, move axially down at described central shaft (22), described petal head (3) open with contraction state under change;
Described outside cylinder (11) sidepiece offers first air intake opening (111) that is connected with described outer stroke space (122), and described outside cylinder (11) bottom offers respectively by being arranged on second air intake opening (112) and the 3rd air intake opening (113) that the interior last inner chamber (1211) of spiral tracheae (13) and piston bush (12) in the accommodation space (123) and lower inner cavity (1212) are connected and are connected.
2. nuclear power station steam generator eddy current inspection tube sheet positioning and locking gas pawl according to claim 1 is characterized in that: between described inner carrier (21) and piston bush (12) inwall first elastic component (23) is installed.
3. nuclear power station steam generator eddy current inspection tube sheet positioning and locking gas pawl according to claim 2, it is characterized in that: offer groove (24) respectively between described inner carrier (21) and piston bush (12) inwall, described first elastic component (23) two ends are embedded respectively in groove (24).
4. nuclear power station steam generator eddy current inspection tube sheet positioning and locking gas pawl according to claim 1 and 2 is characterized in that: be arranged with second elastic component (14) on the described corrugated hose (13).
5. nuclear power station steam generator eddy current inspection tube sheet positioning and locking gas pawl according to claim 4 is characterized in that: described central shaft (22) tapered front end also is fixedly connected with at petal head (3) and when being in contraction state petal head (3) front end is accommodated wherein sleeve boss (4).
6. nuclear power station steam generator eddy current inspection tube sheet positioning and locking gas pawl according to claim 1 or 5 is characterized in that: the tapering point border of described central shaft (22) is provided with and is used for the ball (5) that contacts with rolling with described petal head (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206154335U CN201867394U (en) | 2010-11-18 | 2010-11-18 | Locking air pawl for positioning eddy detecting tube plate of steam generator in nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206154335U CN201867394U (en) | 2010-11-18 | 2010-11-18 | Locking air pawl for positioning eddy detecting tube plate of steam generator in nuclear power station |
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| CN201867394U true CN201867394U (en) | 2011-06-15 |
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| CN2010206154335U Expired - Lifetime CN201867394U (en) | 2010-11-18 | 2010-11-18 | Locking air pawl for positioning eddy detecting tube plate of steam generator in nuclear power station |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486402A (en) * | 2013-09-18 | 2014-01-01 | 国核电站运行服务技术有限公司 | Mechanical foot of heat transmission pipe detecting robot for vapor generators |
| CN106239543A (en) * | 2016-09-30 | 2016-12-21 | 中广核检测技术有限公司 | A kind of superfine pipe diameter heat-transfer pipe of evaporator tube sheet many fingers locking gas pawl |
| CN106328229A (en) * | 2016-09-30 | 2017-01-11 | 中广核检测技术有限公司 | Special air claw for heat transfer pipe plate climbing equipment of steam generator |
| CN106607783A (en) * | 2015-10-27 | 2017-05-03 | 核动力运行研究所 | Heat exchanger tubesheet checking locating toe structure |
| CN106641653A (en) * | 2015-10-28 | 2017-05-10 | 国核电站运行服务技术有限公司 | Tube plate installation tool for vapor generator detection |
| CN106970146A (en) * | 2017-03-28 | 2017-07-21 | 哈尔滨工业大学 | A kind of steam generator heat-transfer pipe detection device orientation connecting mechanism |
| CN107976486A (en) * | 2017-10-31 | 2018-05-01 | 中广核检测技术有限公司 | Nuclear power station control rod guide tubes and bundles split pin probe assembly |
| CN109249051A (en) * | 2018-11-28 | 2019-01-22 | 宜昌市蓝德光电机械有限公司 | Locating tensioning device |
| CN109973758A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of steam generator heat-transfer pipe swelling clamping device |
| CN110345129A (en) * | 2019-07-19 | 2019-10-18 | 韩国昊 | Hydraulic cylinder |
| CN110634581A (en) * | 2019-09-25 | 2019-12-31 | 哈尔滨工业大学 | Heat transfer pipe overhauls location hole clamping mechanism |
| CN114179117A (en) * | 2021-12-31 | 2022-03-15 | 核动力运行研究所 | Pneumatic jack catch actuating mechanism based on shifter |
-
2010
- 2010-11-18 CN CN2010206154335U patent/CN201867394U/en not_active Expired - Lifetime
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486402B (en) * | 2013-09-18 | 2015-08-26 | 国核电站运行服务技术有限公司 | The machinery foot of steam generator heat-transfer pipe measuring robots |
| CN103486402A (en) * | 2013-09-18 | 2014-01-01 | 国核电站运行服务技术有限公司 | Mechanical foot of heat transmission pipe detecting robot for vapor generators |
| CN106607783A (en) * | 2015-10-27 | 2017-05-03 | 核动力运行研究所 | Heat exchanger tubesheet checking locating toe structure |
| CN106641653A (en) * | 2015-10-28 | 2017-05-10 | 国核电站运行服务技术有限公司 | Tube plate installation tool for vapor generator detection |
| CN106641653B (en) * | 2015-10-28 | 2019-02-26 | 国核电站运行服务技术有限公司 | A kind of tube sheet installation tool for steam generator detection |
| CN106239543B (en) * | 2016-09-30 | 2018-10-26 | 中广核检测技术有限公司 | A kind of more fingers locking pneumatic clampers of superfine pipe diameter heat-transfer pipe of evaporator tube sheet |
| CN106239543A (en) * | 2016-09-30 | 2016-12-21 | 中广核检测技术有限公司 | A kind of superfine pipe diameter heat-transfer pipe of evaporator tube sheet many fingers locking gas pawl |
| CN106328229A (en) * | 2016-09-30 | 2017-01-11 | 中广核检测技术有限公司 | Special air claw for heat transfer pipe plate climbing equipment of steam generator |
| CN106328229B (en) * | 2016-09-30 | 2018-02-27 | 中广核检测技术有限公司 | The special jaw of steam generator heat-transfer pipe tube sheet crawling equipment |
| CN106970146B (en) * | 2017-03-28 | 2020-02-21 | 哈尔滨工业大学 | Positioning and connecting mechanism of steam generator heat-transfer pipe detection equipment |
| CN106970146A (en) * | 2017-03-28 | 2017-07-21 | 哈尔滨工业大学 | A kind of steam generator heat-transfer pipe detection device orientation connecting mechanism |
| CN107976486A (en) * | 2017-10-31 | 2018-05-01 | 中广核检测技术有限公司 | Nuclear power station control rod guide tubes and bundles split pin probe assembly |
| CN107976486B (en) * | 2017-10-31 | 2020-07-07 | 中广核检测技术有限公司 | Split pin probe assembly of nuclear power station control rod guide cylinder |
| CN109973758A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of steam generator heat-transfer pipe swelling clamping device |
| CN109973758B (en) * | 2017-12-27 | 2024-04-09 | 核动力运行研究所 | Expansion clamping device for heat transfer tube of steam generator |
| CN109249051A (en) * | 2018-11-28 | 2019-01-22 | 宜昌市蓝德光电机械有限公司 | Locating tensioning device |
| CN110345129A (en) * | 2019-07-19 | 2019-10-18 | 韩国昊 | Hydraulic cylinder |
| CN110345129B (en) * | 2019-07-19 | 2020-09-11 | 浙江雷宸智能科技有限公司 | Hydraulic cylinder |
| CN110634581A (en) * | 2019-09-25 | 2019-12-31 | 哈尔滨工业大学 | Heat transfer pipe overhauls location hole clamping mechanism |
| CN114179117A (en) * | 2021-12-31 | 2022-03-15 | 核动力运行研究所 | Pneumatic jack catch actuating mechanism based on shifter |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Futian District, Shenzhen City Road 518000 Guangdong Province Science & Technology Building 1001, 1506 Patentee after: CGNPC Inspection Technology Co., Ltd. Patentee after: China General Nuclear Power Corporation Patentee after: Zhongkehua Nuclear Power Technology Institute Co., Ltd. Address before: Futian District, Shenzhen City Road 518000 Guangdong Province Science & Technology Building 1001, 1506 Patentee before: CGNPC Inspection Technology Co., Ltd. Patentee before: China Guangdong Nuclear Power Group Co., Ltd. Patentee before: Zhongkehua Nuclear Power Technology Institute Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110615 |
|
| CX01 | Expiry of patent term |