CN201348883Y - Subassembly gripping apparatus of old control rod - Google Patents
Subassembly gripping apparatus of old control rod Download PDFInfo
- Publication number
- CN201348883Y CN201348883Y CNU200920004079XU CN200920004079U CN201348883Y CN 201348883 Y CN201348883 Y CN 201348883Y CN U200920004079X U CNU200920004079X U CN U200920004079XU CN 200920004079 U CN200920004079 U CN 200920004079U CN 201348883 Y CN201348883 Y CN 201348883Y
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- CN
- China
- Prior art keywords
- gripping apparatus
- subassembly
- control rod
- motor
- gripping
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- 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 - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Load-Engaging Elements For Cranes (AREA)
Abstract
The utility model belongs to a subassembly gripping apparatus, particularly the subassembly gripping apparatus of an old control rod. The subassembly gripping apparatus comprises an upper subassembly and a down subassembly connected together, the down subassembly comprises a square frame, the square frame comprises a main support composed of a pull rod, an adjustable rod and a pipe spacer, the main support is equipped with a guide grid plate, the guide grid plate is equipped with a hole trough cooperated with a control bar beam, a down subassembly is equipped with a gripping apparatus extension bar, one end of the gripping apparatus extension bar connects with the gripping apparatus body, an exterior of the gripping apparatus body is equipped with a guide rod for the gripping apparatus, a bottom of the square frame is equipped with a stop grid plate, the bottom of the gripping apparatus is equipped with a gripping claw, the bottom end of the square frame is equipped with a locating dowel, the upper subassembly comprises a flying ring of the gripping apparatus arranged on the top, a down part of the flying ring is equipped with a motor, the motor connects with a reducer, the reducer connects with a coiling block, an exterior of the motor is equipped with a standby handwheel, the standby handwheel connects with the coiling block through a synchronous belt, a down part of the reducer is equipped with an underload and overload protection device.
Description
Technical field
The invention belongs to a kind of assembly gripping apparatus, be specifically related to a kind of old control rod assembly gripping apparatus.
Background technology
The major function of pressurized-water reactor nuclear power plant fuel handling and storage system (PMC system) is reception, check and the storage of fresh fuel, the storage of reactor refuling and spentnuclear fuel and transmission etc.
Old control rod assembly gripping apparatus is an indispensable important tool in pressurized-water reactor nuclear power plant fuel handling and the storage system.During reactor refuling, be used for switching or upgrading operation of old control rod assembly.The travelling speed of gripping apparatus, steady and safe and reliable will the security of refuelling outage time and fuel being exerted an influence whether accurately.
Old control rod assembly gripping apparatus uses in the irradiated fuel store pond, is the specific purpose tool of the old control rod assembly of operation.Wherein promote the electric operating that is operating as of control rod assembly, grasp and discharge the manual operation that is operating as of control rod assembly.
The function of gripping apparatus is:
1) between fuel assembly, switches the control rod assembly;
2) damaged control rod assembly being inserted damaged control rod assembly storage cell deposits.
The whole process of aforesaid operations control rod assembly is all carried out under water.
This gripping apparatus is used with the spentnuclear fuel pond crane of top, irradiated fuel store pond.Gripping apparatus hangs on the suspension hook of spentnuclear fuel pond crane, by the operation of crane and the motion of lifting mechanism, gripping apparatus can be in place above any one of spent fuel storage rack stored cell, and operating personnel stand on the suspension operational platform of spentnuclear fuel pond crane and carry out pulling and pushing and transfer operation of old control rod assembly.
When gripping apparatus does not use it is suspended on the fuel handling tool combinations support of irradiated fuel store pool wall of pool.
Summary of the invention
The objective of the invention is, provide a kind of simple in structure, volume is little, simple operation, safe and reliable old control rod assembly gripping apparatus.
The present invention realizes like this; a kind of old control rod assembly gripping apparatus; it comprises top assembly and the lower component that links together; described lower component comprises quadra; quadra comprises by pull bar; the theme support that adjuster bar and distance sink tube constitute; on main body rack, be provided with the guiding screen; the guiding screen is provided with and controls the hole slot that cluster matches; also be provided with the gripping apparatus extension rod in the lower component; one end of gripping apparatus extension rod connects the gripping apparatus body; the outside of gripping apparatus body is provided with the gripping apparatus guide pole, and the bottom of quadra is provided with the stop screen, and the bottom of gripping apparatus body is provided with gripper; the bottom of quadra is provided with register pin; described top assembly comprises the gripping apparatus suspension ring that are located at its top, and the bottom of gripping apparatus suspension ring is provided with motor, and motor is connected with speed reduction unit; speed reduction unit links to each other with reel; the outside of motor is provided with standby handwheel, and standby handwheel is connected with reel by being with synchronously, and the speed reduction unit bottom is provided with underload and overload protection arrangement.
Advantage of the present invention is, adopts gripping apparatus provided by the present invention, makes that structure is simple more, littler, the simple operation of volume.
Description of drawings
Fig. 1 is a kind of old control rod assembly gripping apparatus structural representation provided by the present invention;
Fig. 2 is a kind of old control rod assembly gripping apparatus provided by the present invention top assembly front view;
Fig. 3 is a kind of old control rod assembly gripping apparatus provided by the present invention top assembly left view.
Among the figure, 1 lower component, 2 top assemblies, 3 operation hangers; 4 bearings, 5 gripping apparatus extension rods, 6 guiding screens, 7 gripping apparatus bodies; 8 gripping apparatus guide poles, 9 stop screens, 10 grippers; 11 register pins, 12 gripping apparatus suspension ring, 13 motors; 14 standby handwheels, 15 reels, 16 are with synchronously; 17 speed reduction units, 19 operating grips, 20 underload and overload protection arrangements.
Embodiment
Describe the present invention below in conjunction with accompanying drawing 1～3.
A kind of old control rod assembly gripping apparatus; it comprises top assembly 2 and the lower component 1 that links together; described lower component 1 comprises quadra 3; quadra 3 comprises by pull bar; the theme support that adjuster bar and distance sink tube constitute; on main body rack, be provided with guiding screen 6; guiding screen 6 is provided with and controls the hole slot that cluster matches; also be provided with gripping apparatus extension rod 5 in the lower component 1; one end of gripping apparatus extension rod 5 connects gripping apparatus body 7; the outside of gripping apparatus body 7 is provided with gripping apparatus guide pole 8; the bottom of quadra 3 is provided with stop screen 9; the bottom of gripping apparatus body 7 is provided with gripper 10, and the bottom of quadra 3 is provided with register pin 11, and described top assembly 2 comprises the gripping apparatus suspension ring 12 that are located at its top; the bottom of gripping apparatus suspension ring 12 is provided with motor 13; motor 13 is connected with speed reduction unit 17, and speed reduction unit 17 links to each other with reel 15, and the outside of motor 13 is provided with standby handwheel 14; standby handwheel 14 is by being with 16 to be connected with reel 15 synchronously, and speed reduction unit 17 bottoms are provided with underload and overload protection arrangement 20.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
This gripping apparatus mainly comprises gripping apparatus body, grappling fixture, gripper driving mechanism, control rod assembly hoisting gear and gripping apparatus suspension ring etc.Be divided into top assembly and lower component by its structure.The upper and lower part assembly fits together by the clamping screw nut.
(1) lower component
Lower component is made up of parts such as quadra, top joint flange, gripping apparatus bodies.
1) quadra
Quadra is the main body rack of lower component, mainly is made up of pull bar, adjusting lever, distance sink tube and 18 blocks of guiding screens etc.Screen is according to the geometric configuration opening slot of control rod cluster, for control rod assembly and gripping apparatus provide guiding.The 3rd block of screen in bottom is used to make the gripping apparatus release of meeting an urgent need.
2 register pins by diagonal line be arranged in a screen of foot below, can insert in the dowel hole of base on the fuel assembly.
2) top joint flange
The top joint flange is by forming with the lower part: the bearing of using when being used to connect 4 hinge bolts of top assembly, rotating operation hanger and assembling.The top backstop of gripping apparatus is installed on the joint flange of top.
3) gripping apparatus body
The gripping apparatus body is by forming with the lower part: guide pole, the gripping apparatus body of both sides guiding, the gripping apparatus extension rod that is connected to hoisting cable and three terminal grippers.
Gripper moves by a mushroom head part that is installed on the sliding shaft rod of taking back the journey spring, a slide plate is housed at its top, can be when gripping apparatus promotes with line slip between two driving stems, retracting spring forces gripping apparatus to mesh (clamped position: gripper opens) lastingly, thus locking control rod assembly.
When gripping apparatus was in lower position, the unlock drive bar that hoisting gear is provided with adjustable stop (comprising clamping plate and screw) made the part rising of mushroom head and causes gripping apparatus to unclamp (release position: gripper draws in).
(counting from the bottom) installs a turnover check plate on the 3rd block of screen, and when gripper was locked in clamped position, the release of can meeting an urgent need made gripper discharge old control rod assembly.
(2) top assembly
The top assembly mainly comprises: bearing, electric hoisting mechanism and the gripping apparatus hanging beam of using on the support etc. are left in extension, a confession that energy is connected with lower component in.
The top assembly can be divided into following components by function:
1) gripping apparatus hoisting gear
The gripping apparatus hoisting gear comprises electric windlass device, belt gear, speed reduction unit and bearing thereof and emergency operation handwheel etc.
The electric windlass device is positioned at the top of gripping apparatus, is used for the control rod assembly is risen to the height of needs.The descending operation of gripping apparatus is by direct motor drive gear train and reel, and a stainless steel wire rope that is connected on the gripping apparatus extension rod below the electric windlass realizes by being suspended on.
Electric windlass comprises a stainless steel reel, and reel is installed on the output shaft of speed reduction unit.
Speed reduction unit is with and the belt pulley transmission by a cover synchronously by motor.Hoisting depth by scrambler and top restriction control rod assembly surpasses this height, stops lifter motion automatically.
Input shaft of speed reducer is provided with a limiter of moment.In case when gripping apparatus is in the top stop dog position, start this limiter.
On motor, be provided with the standby operation handwheel, so that manual operation during forced outage.
The scrambler that is provided with on the electric windlass is in order to realize the automatic conversion of high speed (5m/min) and low speed (0.5m/min).Automatically switch to low speed during at distance top 700mm with apart from bottom 200mm.
Electric windlass is by a button control box control hoisting gear.Detent should be in when outage Braking mode.
2) cluster clamp device or releasing device
Gripping apparatus has two operating positions, i.e. clamped position and release position.
Be provided with a rotating operating grip below the top of gripping apparatus is bearing, this operating grip is realized two operating positions of gripping apparatus in order to the controlling and driving bar.
3) overload and underload protective device
This device comprises that one overlaps roller, wheel carrier and spring that is wound with hoisting cable on it.
Spring tension is by the steel wire rope tension balance.
Under the wire rope relaxation cases, spring makes the upwards swing of fork plate on the wheel carrier, makes sensor send signal, and motor stops operating, and gripping apparatus stops to descend.
Under overload situations, spring makes fork plate on the wheel carrier to lower swing, makes sensor send signal, and motor stops operating, and gripping apparatus stops to promote.In case above-mentioned functions lost efficacy, when gripping apparatus was in the top stop dog position, the limiter of moment action avoided impaired thereby gripping apparatus no longer raises, and this is that one machinery ensures.
4) emergent tripper
Fix a ring at steel cord ends, be used to operate emergent tripper.
When carrying out control rod assembly transfer operation, as the accident conditions that occur unclamping cluster, can use emergent tripper to carry out unlocking operation, cluster is thrown off and put down, and then find out the parts that break down in the lower component and repair.
(3) running program of gripping apparatus
--the extraction of control rod assembly
1) operating grip with gripping apparatus places unlocked position;
2) gripping apparatus is aimed at and is soon therefrom taken out the fuel assembly of control rod assembly, and put thereon;
3) with windlass grappling fixture is descended, gripper inserts in the spider of control rod assembly, after the effect of wire rope relaxation device, stops the grappling fixture that descends when no normal load;
4) operating grip being placed clamped position is that gripper is locked on the control rod assembly;
5) promote the control rod assembly with windlass, and by guiding screen and guide finger guiding;
Automatically stop to promote when 6) grappling fixture arrives its high position;
7) use spentnuclear fuel pond crane gripping apparatus to be moved on the fuel assembly that needs this control rod assembly of insertion and location.
--the insertion of control rod assembly.
By the control rod assembly being inserted in the fuel assembly with the described similar method of the extraction of control rod assembly.
1) the control rod assembly is reduced in the fuel assembly;
2) operating grip with gripping apparatus places unlocked position, unclamps the control rod assembly;
3) gripping apparatus is drawn back.
Claims (1)
1. old control rod assembly gripping apparatus; it comprises top assembly (2) and the lower component (1) that links together; it is characterized in that: described lower component (1) comprises quadra (3); quadra (3) comprises by pull bar; the theme support that adjuster bar and distance sink tube constitute; on main body rack, be provided with guiding screen (6); guiding screen (6) is provided with and controls the hole slot that cluster matches; also be provided with gripping apparatus extension rod (5) in the lower component (1); one end of gripping apparatus extension rod (5) connects gripping apparatus body (7); the outside of gripping apparatus body (7) is provided with gripping apparatus guide pole (8); the bottom of quadra (3) is provided with stop screen (9); the bottom of gripping apparatus body (7) is provided with gripper (10); the bottom of quadra (3) is provided with register pin (11); described top assembly (2) comprises the gripping apparatus suspension ring (12) that are located at its top; the bottom of gripping apparatus suspension ring (12) is provided with motor (13); motor (13) is connected with speed reduction unit (17); speed reduction unit (17) links to each other with reel (15); the outside of motor (13) is provided with standby handwheel (14); standby handwheel (14) is connected with reel (15) by being with (16) synchronously, and speed reduction unit (17) bottom is provided with underload and overload protection arrangement (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920004079XU CN201348883Y (en) | 2009-01-22 | 2009-01-22 | Subassembly gripping apparatus of old control rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920004079XU CN201348883Y (en) | 2009-01-22 | 2009-01-22 | Subassembly gripping apparatus of old control rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201348883Y true CN201348883Y (en) | 2009-11-18 |
Family
ID=41368351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200920004079XU Expired - Fee Related CN201348883Y (en) | 2009-01-22 | 2009-01-22 | Subassembly gripping apparatus of old control rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201348883Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509567A (en) * | 2011-11-15 | 2012-06-20 | 广东核电合营有限公司 | Process method and lifting gripping apparatus both for jam control rod of nuclear power station reactor |
| CN102509567B (en) * | 2011-11-15 | 2016-12-14 | 广东核电合营有限公司 | The bite control rod processing method of nuclear power plant reactor and bite control rod lifting grab |
| CN107742540A (en) * | 2017-10-17 | 2018-02-27 | 中国核动力研究设计院 | A kind of gripping apparatus changed for detector assembly and grasping means |
| CN108615567A (en) * | 2018-04-28 | 2018-10-02 | 广西防城港核电有限公司 | The method and device of accidental damage in prevention and control stick reversed process |
| CN110689979A (en) * | 2019-10-28 | 2020-01-14 | 中核核电运行管理有限公司 | Underwater emergency grabbing device for cobalt isotope rod bundle |
| CN110689982A (en) * | 2019-11-01 | 2020-01-14 | 中核核电运行管理有限公司 | Emergent grabbing device of cobalt isotope rod cluster snap ring retainer ring |
| CN112232264A (en) * | 2020-10-28 | 2021-01-15 | 上海核工程研究设计院有限公司 | Fuel assembly identification and positioning system based on image processing |
-
2009
- 2009-01-22 CN CNU200920004079XU patent/CN201348883Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509567A (en) * | 2011-11-15 | 2012-06-20 | 广东核电合营有限公司 | Process method and lifting gripping apparatus both for jam control rod of nuclear power station reactor |
| CN102509567B (en) * | 2011-11-15 | 2016-12-14 | 广东核电合营有限公司 | The bite control rod processing method of nuclear power plant reactor and bite control rod lifting grab |
| CN107742540A (en) * | 2017-10-17 | 2018-02-27 | 中国核动力研究设计院 | A kind of gripping apparatus changed for detector assembly and grasping means |
| CN108615567A (en) * | 2018-04-28 | 2018-10-02 | 广西防城港核电有限公司 | The method and device of accidental damage in prevention and control stick reversed process |
| CN110689979A (en) * | 2019-10-28 | 2020-01-14 | 中核核电运行管理有限公司 | Underwater emergency grabbing device for cobalt isotope rod bundle |
| CN110689982A (en) * | 2019-11-01 | 2020-01-14 | 中核核电运行管理有限公司 | Emergent grabbing device of cobalt isotope rod cluster snap ring retainer ring |
| CN112232264A (en) * | 2020-10-28 | 2021-01-15 | 上海核工程研究设计院有限公司 | Fuel assembly identification and positioning system based on image processing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091118 Termination date: 20180122 |