CN208488983U - The device for plugging of million kilowatt nuclear power factory Spent Fuel Pool - Google Patents

Abstract

The utility model belongs to the technical field at million kilowatt nuclear power station, more particularly to a kind of device for plugging of million kilowatt nuclear power factory Spent Fuel Pool, including leak stopping mechanism, leak stopping mechanism includes leak stopping cover board and several sealing ring items, leak stopping cover board, which is recessed inwardly, is formed with leak stopping chamber, each sealing ring item is fixedly installed in the outer edge of leak stopping cover board, and each sealing ring item and isolation frame are located at the same side of leak stopping cover board.The leak stopping chamber of leak stopping cover board can block the small-sized breach position of Spent Fuel Pool bottom of pond, since several clump weights are arranged, the weight of million kilowatt nuclear power factory Spent Fuel Pool device for plugging is so just aggravated, so that being formed with pressure difference between the interior outside of leak stopping cover board, it can so guarantee that it can more be sealed at the small-sized breach position for being located at bottom of pond securely in the work of Spent Fuel Pool bottom of pond.

Description

The device for plugging of million kilowatt nuclear power factory Spent Fuel Pool

Technical field

The utility model belong to million kilowatt nuclear power station technical field more particularly to a kind of million kilowatt nuclear power factory The device for plugging of Spent Fuel Pool.

Background technique

Spentnuclear fuel refers to through overshoot irradiation, used nuclear fuel, is generated by the nuclear reactor of nuclear power station.Core is anti- Include a large amount of radioactive elements in nuclear fuel after answering heap to react, therefore there are a large amount of radioactivity, if do not located properly Reason, can seriously affect the health of environment with the personnel for contacting them.Therefore via the weary combustion after the nuclear reactor reaction of nuclear power station Material needs to store many decades in Spent Fuel Pool, until its radioactivity is reduced to and can carry out the subsequent post-processing to spentnuclear fuel When technique.With domestic nuclear power be increasing and the lasting operation of nuclear power station, most domestic nuclear power station is weary at present Fuel pit screen work completely holds, and it is impossible to meet the demands of spentnuclear fuel storage inside nuclear power station for existing container, therefore Spent Fuel Pool must expand Spent Fuel Pool storage capacity by transformation, guarantee the normal production in nuclear power station.

When carrying out Spent Fuel Pool dilatation operation, it is necessary first to first the old screen work inside Spent Fuel Pool is removed, It needs first to transport the spentnuclear fuel inside old screen work to external storage before carrying out old screen work dismounting, but the weary combustion inside old screen work The radioactivity of material is not reduced to emittance value needed for can transporting and carrying out the aftertreatment technology of subsequent spentnuclear fuel generally, therefore Transport and storage to spentnuclear fuel bring great difficulty.

It after spentnuclear fuel empties, needs to remove old screen work, the dismounting of old screen work is at home and abroad to carry out for the first time, old lattice Frame is soaked in the inside with radioactive pond due to being used to store spentnuclear fuel for a long time, therefore with a large amount of on old screen work Radioactivity, and due to having more breakage and corrosion on long-term immersion screen work, staff can not be directly to old screen work Close and touching, staff, which can not enter inside weary pond, assists and observes the operation for lifting old screen work.And in weary combustion Expect during carrying out new and old screen work replacement in pond, it may occur that screen work or other devices lift unstable and pound and fall within pond The phenomenon that bottom, is thus likely to cause basin bottom and Local Cracking occurs, generate small-sized breach, causes outside radioactivity aqueous It lets out.Therefore it is necessary to research and develop a kind of device for plugging for above-mentioned phenomenon, it can be interim to being carried out at the cracking in pond Leak stopping, to prevent the radioactivity aqueous in water pond from leaking.

Utility model content

The purpose of this utility model is to provide a kind of device for plugging of million kilowatt nuclear power factory Spent Fuel Pool, it is intended to There is small-sized breach and causes radioactivity aqueous in the bottom of pond for solving million kilowatt nuclear power factory in the prior art Spent Fuel Pool The technical issues of leaking.

A kind of in order to achieve the above purposes, the technical solution adopted by the utility model is: million kilowatt nuclear power factory spentnuclear fuel Leak stopping for pool device, including leak stopping mechanism, the leak stopping mechanism include leak stopping cover board and several sealing ring items, the leak stopping cover board It is recessed inwardly and is formed with leak stopping chamber, each sealing ring item is fixedly installed in the outer edge of the leak stopping cover board and from the inside to the outside It is arranged by sequence ring set, is additionally provided with several clump weights on the leak stopping cover board, each clump weight is in the leak stopping cover board The heart is that the center of circle is radially distributed.

Further, it is provided with isolation frame on the leak stopping cover board, the leak stopping chamber, which is located at the isolation frame and encloses, sets shape At region in.

Further, to its outside, protrusion has extended to form two isolation edge strips to the four corners of the isolation frame, and eight Isolation edge strip described in item connects with the sealing ring item of internal layer with by the sealing ring item and the area being isolated between frame Domain is divided into eight independent area of isolation.

Further, the leak stopping mechanism further includes four support bases, and four support bases are fixedly installed in institute respectively In the four corners for stating isolation frame.

Further, four corners of the isolation frame offer mounting hole, solid on four support bases Dingan County is equipped with connecting column, and four connecting columns plug respectively to be fixed in four mounting holes.

Further, the leak stopping is intracavitary is provided with spacing frame, and the spacing frame is fixedly installed in the top of the leak stopping chamber Portion, and to its outside, protrusion has extended to form two separation edge strips, eight separation sides to the four corners of the spacing frame Item connects with the side wall of the leak stopping chamber the region between the leak stopping chamber outer edge and the spacing frame is divided into eight A independent separated region.

Further, each sealing ring item offers several points by sequence ring cloth away from the side of the leak stopping cover board Spacer ring slot.

Further, the outer edge of the leak stopping cover board offers several assembly screw holes, and each sealing ring item opens up There are several through holes, each through hole and each assembly screw hole correspond, and each sealing ring item passes through clamping screw It wears each through hole and each assembly screw hole is fixedly connected with the outer edge of the leak stopping cover board.

Further, further include vacuum evacuation device, offer on the leak stopping cover board for connecting the vacuum means The aspirating hole set, the aspirating hole are connected with the leak stopping chamber, and the vacuum evacuation device passes through high-pressure hose and the pumping Hole is connected.

It further, further include hoisting mechanism, the hoisting mechanism includes mounting base and Shackle assembly, the mounting base Including fixed part and round plate, the fixed part is fixedly installed in the center position on the leak stopping cover board and being located at institute's leak stopping cover board It sets, the round plate is fixedly installed on the fixed part, and the Shackle assembly is installed on the round plate.

Further, the Shackle assembly includes lifting lug part and two idler arms, the upper end of two idler arms respectively with The two lateral walls of the lifting lug part are rotatably connected, and the lower end of two idler arms offers guiding elongated slot, the lifting lug The two lateral walls of part are respectively arranged with connector, and two connectors are provided with pin close to one end of the two guiding elongated slots Nail, two pins are slideably positioned in respectively in the two guiding elongated slots, and the lower end of two idler arms is equipped with fastener, and two The fastener is interlocked with the round plate.

Further, the lifting lug part includes lifting portion and limiting section, and the upper end of two idler arms is hung with described respectively The two lateral walls in dress portion are rotatably connected, and the lower end in the lifting portion offers installation cavity, and the upper end of the limiting section is set to In the installation cavity, the side wall in the lifting portion is fixedly installed with driving cylinder, and the driving end of the driving cylinder is equipped with bolt Part, the upper end of the limiting section offer the pin hole for accommodating the pin member, the lifting lug part by the pin member into Enter the installation cavity and is inserted in the restriction realized in the pin hole with the two idler arm relative positions.

Further, the lower end of the limiting section is equipped with axis of cone part, and the projected side wall of the axis of cone part has extended to form Loop order is limited, the accommodating hole for accommodating the axis of cone part is offered on the round plate, the accommodating hole penetrates through the disk The hole edge of portion and the fixed part, the limit loop order and the accommodating hole abuts against, and the upper end in the lifting portion is equipped with master and hangs Ring.

Further, the side of the fixed part is provided with the fixture for clamping the high-pressure hose, in the fixture Intercommunicating pore is offered, connection chamber is offered in the mounting base, the high-pressure hose is connected to chamber with described by the intercommunicating pore It is connected, the connection chamber is connected with the aspirating hole.

Further, the four corners protrusion that the side wall of the fixed part is respectively facing the leak stopping cover board has extended to form Four stiffening plates, four stiffening plates are fixedly installed on the leak stopping cover board away from one end of the fixed part.

Further, the hoisting mechanism further includes four fixing seats, and four fixing seats are fixedly installed in described It is fixedly connected on leak stopping cover board and respectively with four stiffening plates away from one end of the fixed part.

Further, loss of weight cavity is offered in four stiffening plates.

Further, the hoisting mechanism further includes that four positions adjust lifting lug, and four positions adjust lifting lug difference It is fixedly installed in one end that four stiffening plates deviate from the fixed part.

The utility model has the beneficial effects that the million kilowatt nuclear power factory Spent Fuel Pool device for plugging of the utility model, When work, the leak stopping chamber opened up on leak stopping cover board can block the small-sized of million kilowatt nuclear power factory Spent Fuel Pool bottom of pond first Breach position, to small-sized breach position is isolated with Spent Fuel Pool environment, since several clump weights, and each counterweight is arranged Block is radially distributed as the center of circle using the center of leak stopping cover board.Million kilowatt nuclear power factory Spent Fuel Pool is so just aggravated The weight of device for plugging just makes to be formed with pressure difference between the interior outside of leak stopping cover board in this way, the presence of such each clump weight Million kilowatt nuclear power factory Spent Fuel Pool device for plugging can be met more to seal securely in the work of Spent Fuel Pool bottom of pond It is located at the small-sized breach position of bottom of pond, and then ensure that in Spent Fuel Pool has radioactive aqueous can not be from small-sized breach It leaks at position.The edge of leak stopping cover board is provided with several sealing ring items in addition, has so just thoroughly obstructed small-sized breach Position is connected with Spent Fuel Pool environment.

Detailed description of the invention

It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with It obtains other drawings based on these drawings.

Fig. 1 is that the structure of million kilowatt nuclear power factory Spent Fuel Pool device for plugging provided by the embodiment of the utility model is shown It is intended to one；

Fig. 2 is the Section View of the line A-A along Fig. 1；

Fig. 3 is the partial enlarged view in Fig. 2 at B；

Fig. 4 is the partial enlarged view in Fig. 2 at C；

Fig. 5 is that the structure of million kilowatt nuclear power factory Spent Fuel Pool device for plugging provided by the embodiment of the utility model is shown It is intended to two；

Fig. 6 is that the structure of million kilowatt nuclear power factory Spent Fuel Pool device for plugging provided by the embodiment of the utility model is shown It is intended to three.

Wherein, each appended drawing reference in figure:

10-leak stopping mechanism 11-leak stopping cover board 12-sealing ring items

13-Weight plate 20-hoisting mechanism, 21-Shackle assemblies

22-23-stiffening plate of mounting base, 24-positions adjust lifting lug

Edge strip is isolated in 111-leak stopping chamber 112-isolation frames 113-

114-support base 115-connecting column, 116-spacing frames

117-, which separate edge strip 121-, separates 211-lifting lug of annular groove part

212-main suspension ring 213-axis of cone, 214-idler arms of part

215-guiding 216-connector of elongated slot, 217-pins

218-limit 219-fastener of loop order, 221-fixtures

222-intercommunicating pore 223-connection, 224-accommodating holes of chamber

225-driving 226-round plate of cylinder, 227-fixed parts

231-loss of weight cavity 232-fixing seat, 2111-lifting portions

2112-limiting sections.

Specific embodiment

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining the description of attached drawing 1~6 is exemplary, it is intended to for explaining the utility model, and should not be understood as practical to this Novel limitation.

In the description of the present invention, it should be understood that term " length ", " width ", "upper", "lower", " preceding ", The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached Orientation or positional relationship shown in figure, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this The limitation of utility model.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention, More than, unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis Concrete condition understands the concrete meaning of above-mentioned term in the present invention.

As shown in Figures 1 to 3, a kind of million kilowatt nuclear power factory Spent Fuel Pool leak stopping provided by the embodiment of the utility model Device, including leak stopping mechanism 10, leak stopping mechanism 10 include that leak stopping cover board 11 and several sealing ring items 12, leak stopping cover board 11 concave It falls into and is formed with leak stopping chamber 111, the pumping for connecting the vacuum evacuation device in Spent Fuel Pool workshop is offered on leak stopping cover board 11 Stomata (not shown), aspirating hole are connected with leak stopping chamber 111, and each sealing ring item 12 is fixedly installed in the outside of leak stopping cover board 11 Edge is simultaneously arranged by sequence ring set from the inside to the outside, is additionally provided with several clump weights 13 on leak stopping cover board 11, each clump weight 13 is with leak stopping lid The center of plate 11 is that the center of circle is radially distributed.

Million kilowatt nuclear power factory Spent Fuel Pool device for plugging provided by the embodiment of the utility model, when work, leak stopping The leak stopping chamber 111 opened up on cover board 11 can block the small-sized breach position of million kilowatt nuclear power factory Spent Fuel Pool bottom of pond first It sets, to small-sized breach position is isolated with Spent Fuel Pool environment, since several clump weights 13, and each clump weight 13 is arranged It is radially distributed as the center of circle using the center of leak stopping cover board 11.Million kilowatt nuclear power factory Spent Fuel Pool is so just aggravated The weight of device for plugging just makes to be formed with pressure difference between the interior outside of leak stopping cover board 11 in this way, such each clump weight 13 It is more secured in the work of Spent Fuel Pool bottom of pond in the presence of million kilowatt nuclear power factory Spent Fuel Pool device for plugging can be met Ground envelope is located at the small-sized breach position of bottom of pond, and then ensure that in Spent Fuel Pool have radioactive aqueous can not be from small-sized Breach leaks at position.The edge of leak stopping cover board 11 is provided with several sealing ring items 12 in addition, so just thoroughly barrier Small-sized breach position is connected with Spent Fuel Pool environment.Wherein, small-sized breach refers to that diameter is less than the bottom of pond breach of 300mm.

In the present embodiment, as shown in Figure 1 and Figure 5, isolation frame 112 is provided on leak stopping cover board 11, leak stopping chamber 111 is located at Isolation frame 112, which encloses, to be set in the region to be formed.Specifically, just right in this way by being provided with isolation frame 112 on leak stopping cover board 11 Leak stopping region on leak stopping cover board 11 has carried out effective separation, further improves the leak stopping capability of leak stopping cover board 11, and passes through Leak stopping chamber 111 is set to isolation frame 112 to enclose and set in the region to be formed, in this way isolation frame 112 can leak stopping chamber 111 outside Foundation isolation defence line together is enclosed, has further obstructed radioactive water liquid stream in Spent Fuel Pool environment to small-sized breach position Place.

In the present embodiment, as shown in figure 5, the four corners of isolation frame 112 have extended to form two to protrusion on the outside of it Edge strip 113 is isolated in item, and eight isolation edge strips 113 connect with the sealing ring item 12 of internal layer by sealing ring item 12 and frame is isolated Region between 112 is divided into eight independent area of isolation.

Specifically, by making the four corners that frame 112 is isolated, to its outside, protrusion has extended to form two isolated borders Item 113, and eight isolation edge strips 113 are connected with the sealing ring item 12 of internal layer by sealing ring item 12 and frame 112 is isolated Between region be divided into eight independent area of isolation, so just established in the region that leak stopping cover board 11 is covered multiple Independent leak stopping area, to just further effectively be separated by radioactivity aqueous, so that radioactive water liquid stream is to small-sized breach position It sets more difficult.

In the present embodiment, as shown in Figure 1, Figure 2 and shown in Fig. 5, leak stopping mechanism 10 further includes four support bases 114, four branch Support seat 114 is fixedly installed in respectively in the four corners of isolation frame 112.Specifically, since the four corners of isolation frame 112 are also set It is equipped with support base 114, just significantly increases the contact area of the bottom of pond of leak stopping cover board 11 and Spent Fuel Pool in this way, so that Million kilowatt nuclear power factory Spent Fuel Pool device for plugging more can firmly be set to the bottom of pond of Spent Fuel Pool, and then make It can be more stable to the plugging operation at Spent Fuel Pool bottom of pond cracking progress.

In the present embodiment, as shown in Figure 1, Figure 2 and shown in Fig. 5, the four corners of isolation frame 112 offer mounting hole (figure Do not show), connecting column 115 is fixedly installed on four support bases 114, and four connecting columns 115 plug respectively is fixed on four peaces It fills in hole.Specifically, by be fixedly installed with connecting column 115 on four support bases 114, four connecting columns 115 are distinguished It plugs and is fixed in four mounting holes, just make the assembly between four support bases 114 and the four corners that frame 112 is isolated in this way Relationship is more simple, to realize the quick assembling of four support bases 114 and the four corners that frame 112 is isolated.

Further, the upper end of four connecting columns 115 can be formed with external screw thread, and the hole wall of four mounting holes can be formed with interior Screw thread, such four connecting columns 115 can be threadedly engaged with the realization of four mounting holes, so realize four support bases 114 with Being detachably connected for the four corners of frame 112 is isolated, is so just conducive to four 114 change and repair of support base.

In the present embodiment, as shown in figure 5, being provided with spacing frame 116 in leak stopping chamber 111, spacing frame 116 is fixedly installed in The top of leak stopping chamber 111, and to its outside, protrusion has extended to form two separation edge strips 117 to the four corners of spacing frame 116, Eight separation edge strips 117 connect with the side wall of leak stopping chamber 111 with by the area between 111 outer edge of leak stopping chamber and spacing frame 116 Domain is divided into eight independent separated regions.

Specifically, by being provided with spacing frame 116 in leak stopping chamber 111, and make the four corners of spacing frame 116 to Its outside protrusion has extended to form two separation edge strips 117, and eight separation edge strips 117 connect with the side wall of leak stopping chamber 111, this Just have nine independent leak stopping regions in sample leak stopping chamber 111, the leak stopping for being so just obviously improved leak stopping cover board 11 is accurate Property.

In the present embodiment, as shown in figure 3, each sealing ring item 12 away from leak stopping cover board 11 side offer it is several by The separation annular groove 121 of sequence ring cloth.Specifically, if by offering each sealing ring item 12 away from the side of leak stopping cover board 11 The dry separation annular groove 121 by sequence ring cloth, separations annular groove 121 each so just form several groups and ring region are isolated, so as into One step the radioactivity aqueous in Spent Fuel Pool environment is obstructed except leak stopping cover board 11.

In the present embodiment, the outer edge of leak stopping cover board 11 offers several assembly screw hole (not shown), each sealing ring item 12 offer several through hole (not shown), and each through hole and each assembly screw hole correspond, and each sealing ring item 12 passes through lock Tight bolt wears each through hole and each assembly screw hole is fixedly connected with the outer edge of leak stopping cover board 11.

Specifically, since each sealing ring item 12 is to be connected by bolted connection with the outer edge of leak stopping cover board 11 It connects, so just realizes being detachably connected for each sealing ring item 12 and leak stopping cover board 11, and then be obviously improved each sealing ring item 12 it is removable transsexual, be conducive to sealing ring item 12 quickly change and repair.

In the present embodiment, Spent Fuel Pool device for plugging further includes vacuum evacuation device (not shown), on leak stopping cover board 11 The aspirating hole (not shown) for connecting vacuum evacuation device is offered, aspirating hole is connected with leak stopping chamber 111, and vacuum evacuation device is logical High-pressure hose (not shown) is crossed to be connected with aspirating hole.

Specifically, the leak stopping when the aspirating hole on leak stopping cover board 11 is connected with vacuum evacuation device, in leak stopping cover board 11 Air in chamber 111 can be pulled out, and then form vacuum in leak stopping chamber 111, then the small-sized of Spent Fuel Pool bottom is split Just vacuum is formd at mouth position, and then leak stopping cover board 11 can be by extraneous pressure and by firmly by set on Spent Fuel Pool Bottom of pond, due to the presence of vacuum evacuation device, such vacuum evacuation device can will be blocked up by the aspirating hole opened up on leak stopping cover board 11 Air in Cancellation Missed plate 11 is taken away, to establish vacuum in leak stopping cover board 11.

In the present embodiment, as shown in Figure 1, Figure 2 and shown in Fig. 5, Spent Fuel Pool device for plugging further includes hoisting mechanism 20, is hung Mounting mechanism 20 includes mounting base 22 and Shackle assembly 21, and mounting base 22 includes fixed part 227 and round plate 226, and fixed part 227 is solid Dingan County is fixedly installed in fixed part 227 loaded on the center position on leak stopping cover board 11 and positioned at institute's leak stopping cover board 11, round plate 226 On, Shackle assembly 21 is fixedly installed on round plate 226.

Specifically, since Spent Fuel Pool device for plugging further includes hoisting mechanism 20, in such Spent Fuel Pool workshop Hanging apparatus can be matched with the Shackle assembly 21 of hoisting mechanism 20, and then million kilowatt nuclear power factory Spent Fuel Pool is blocked up Leakage device is successfully hung at the small-sized breach position into Spent Fuel Pool bottom of pond.

Further, by making mounting base 22 be located at the center position of institute's leak stopping cover board 11, then Spent Fuel Pool factory Hanging apparatus in room sling install in Shackle assembly 21 in mounting base 22 when, million kilowatt nuclear power factory Spent Fuel Pool Device for plugging posture during hanging can keep stable.

In the present embodiment, as shown in Figure 2 and Figure 4, Shackle assembly includes lifting lug part 211 and two idler arms 214, and two draw Two lateral walls of the upper end of rod piece 214 respectively with lifting lug part 211 are rotatably connected, and the lower end of two idler arms 214 offers It is oriented to elongated slot 215, the two lateral walls of lifting lug part 211 are also respectively provided with connector 216, and two connectors 216 are close to two guiding One end of elongated slot 215 is provided with pin 217, and two pins 217 are slideably positioned in respectively in two guiding elongated slots 215, two idler arms 214 lower end is equipped with fastener 219, and two fasteners 219 are interlocked with round plate 226.

Specifically, when the lower end of Shackle assembly and mounting base 22 abut against, due to two idler arms 214 with lifting lug part 211 upper end is rotatably connected, and to be slideably positioned in two guiding respectively long for the pin 217 that is equipped with of 211 two lateral walls of lifting lug part In slot 215, for such lifting lug part 211 due to Gravitative Loads, the pin 217 that two connector 216 connected to it is equipped with will be It is slided in guiding elongated slot 215, and then two idler arms 214 is driven to rotate and expand to both sides, so just drive two again Fastener 219 is subjected to displacement to both sides, so that the space between two fasteners 219 becomes larger, is in opening mode, is worked as disk in this way Portion 226 is between two fasteners 219, and when lifting lifting lug part 211, the above process can be carried out inversely again, both namely two buckles Part 219 moves towards one another under the drive of lifting lug part, so that under the upper surface of two fasteners 219 and round plate 226 End face abuts against, and realizes the snapping of two fasteners 219 and round plate 226, and then realizes Shackle assembly 21 and mounting base 22 Be fixedly connected so that Shackle assembly 21 is able to sling million kilowatt nuclear power factory Spent Fuel Pool device for plugging.

In the present embodiment, as shown in Figure 2 and Figure 4, lifting lug part 211 includes lifting portion 2111 and limiting section 2112, and two draw Two lateral walls of the upper end of rod piece 214 respectively with lifting portion 2111 are rotatably connected, and the lower end in lifting portion 2111 offers peace It behave affectedly, the upper end of limiting section 2112 is set in installation cavity, and the side wall in lifting portion 2111 is fixedly installed with driving cylinder 225, driving The driving end of cylinder 225 is equipped with pin member (not shown), and the upper end of limiting section 2112 offers the pin hole for accommodating pin member (not shown), lifting lug part 211 are entered installation cavity and are inserted in pin hole to realize and the opposite position of two idler arm 214 by pin member The restriction set.

Specifically, when two idler arms 214 are fully deployed, limiting section 2112 enters the designated position in installation cavity at this time Pin member can be passed through the side wall in lifting portion 2111 and entered in installation cavity by place, in this way driving cylinder 225, and then is inserted in In the pin hole of 2112 upper end of limiting section, then due to the position-limiting action of pin member, the limiting section 2112 of lifting lug part 211 and lifting portion 2111 relative positional relationship is just no longer changed, and realizes the locking of 214 relative position of lifting lug part 211 and two idler arms, So lifting lug part 211 is just made to achieve a fixed connection with mounting base 22.

In the present embodiment, the lower end of limiting section 2112 is equipped with axis of cone part 213, and the projected side wall of axis of cone part 213 extends Restraining position ring block rank 218 is formed, the accommodating hole 224 for accommodating axis of cone part 213, accommodating hole perforation circle are offered on round plate 226 Pan portion 226 and fixed part 227, limit loop order 218 and the hole edge of accommodating hole 224 abuts against, and the upper end in lifting portion 2111 is equipped with master Hanging ring 212.

Specifically, when limiting section 2112 moves down, axis of cone part 213 is fallen within just in accommodating hole 224, and limits loop order 218 Abutted against with the hole edge of accommodating hole 224, resist limiting section 2112 and continue to move down, and the portion of lifting at this time 2111 will continue to relative to Limiting section 2112 moves down, and finally makes at the pin member face pin hole for driving the driving end of cylinder to be equipped with, at this time operator You can learn that limiting section 2112 arrived designated position, driving cylinder can be started at this time, so that pin member plugs in pin hole.

In the present embodiment, as shown in Figure 2 and Figure 5, the side of mounting base 22 is provided with the folder for clamping high-pressure hose Have 221, offer intercommunicating pore 222 in fixture 221, connection chamber 223 is offered in fixed part 227, high-pressure hose passes through intercommunicating pore 222 are connected with connection chamber 223, and connection chamber 223 is connected with aspirating hole.

Specifically, by being provided with the fixture 221 for clamping high-pressure hose, such mounting base in the side of mounting base 22 22 are just integrated with the function of connection high-pressure hose, and high-pressure hose can be by the intercommunicating pore 222 and mounting base that open up in fixture 221 The connection chamber 223 opened up in 22 is connected, and is connected to chamber 223 and is connected with aspirating hole, just realizes aspirating hole and height in this way Press hose between connection transition so that pumping speed be effectively controlled, and make pumping process it is more stable and Carried out with ground.

In the present embodiment, as shown in Figure 1, Figure 2 and shown in Fig. 5, the side wall of fixed part 227 is respectively facing the four of leak stopping cover board 11 A corner projection is extended to form there are four stiffening plate 23, and four stiffening plates 23 are fixedly installed in away from one end of fixed part 227 On leak stopping cover board 11.

Specifically, by the way that four stiffening plates 23 are arranged, mounting base 22 is just enabled to more to be firmly fixed to block up in this way On Cancellation Missed plate 11.And the four corners protrusion by making four stiffening plates 23 be respectively facing leak stopping cover board 11 extends, so Be conducive to for the pulling force that fixed part 227 is born being dispersed to ground on leak stopping cover board 11, so just improve million kilowatt The hoisting safety of spent nuclear fuel in nuclear power plant leak stopping for pool device.

In the present embodiment, as shown in Figure 1 and Figure 5, hoisting mechanism 20 further includes four fixing seats 232, four fixing seats 232 are fixedly installed on leak stopping cover board 11 and are fixedly connected respectively with four stiffening plates 23 away from one end of mounting base 22.Tool Body, due to the presence of four fixing seats 232, the assembly space between such stiffening plate 23 and leak stopping cover board 11 just can be obtained Effectively transition and buffering.

In the present embodiment, as shown in figures 1 to 6, loss of weight cavity 231 is offered in four stiffening plates 23.Specifically, Due to offering loss of weight cavity 231 in four stiffening plates 23, the self weight of stiffening plate 23 can be significantly reduced in this way, while can also The materials being fabricated of four stiffening plates 23 is saved, to reduce the manufacturing cost of four stiffening plates 23.Preferably, each loss of weight cavity 231 are distributed along the axis direction of each stiffening plate 23 respectively, so just create a further reduction due to opening up loss of weight cavity 231 and right The influence of each 23 intensity of stiffening plate.

In the present embodiment, as shown in figures 1 to 6, hoisting mechanism 20 further includes that four positions adjust lifting lug 24, four positions It sets and adjusts one end that lifting lug 24 is fixedly installed in four stiffening plates 23 away from fixed part 227 respectively.Specifically, by adding at four Strong plate 23 is respectively set four positions away from one end of fixed part 227 and adjusts lifting lug 24, in this way when million kilowatt nuclear power factory is weary Fuel pit device for plugging can be hung by adjusting with what four positions adjusting lifting lugs 24 matched when hanging into Spent Fuel Pool The elongation of assembling device carries out overall process with the posture to million kilowatt nuclear power factory Spent Fuel Pool device for plugging and persistently adjusts. It just ensure that its posture during hanging into Spent Fuel Pool remains stable in this way.

In the present embodiment, as shown in figures 1 to 6, the shape of leak stopping cover board 11 is square plate shape or disc.Specifically, Leak stopping cover board 11 shape can according to use environment difference and cracking notch geometry differences and flexible setting, just promoted in this way Leak stopping cover board 11 is blocking the flexibility in operation.

In the present embodiment, each sealing ring item 12 is EPDM circle item.Specifically, by the way that each sealing ring item 12 is equal It is set as EPDM circle item, then have benefited from the characteristic of heat-resisting EPDM material, resistance to oxidation and acid-alkali-corrosive-resisting, ternary second Third circle item can be on active service steadily in the long term under weak acid or mild alkaline conditions, so just ensure that each sealing ring item 12 in the mistake frequently used Cheng Zhong, leakproofness do not decline.

The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle Within the scope of shield.

Claims (18)

1. a kind of million kilowatt nuclear power factory Spent Fuel Pool device for plugging, it is characterised in that: including leak stopping mechanism, the leak stopping Mechanism includes leak stopping cover board and several sealing ring items, and the leak stopping cover board, which is recessed inwardly, is formed with leak stopping chamber, each sealing ring Item is fixedly installed in the outer edge of the leak stopping cover board and is arranged from the inside to the outside by sequence ring set, is additionally provided on the leak stopping cover board Several clump weights, each clump weight are radially distributed as the center of circle using the center of the leak stopping cover board.

2. million kilowatt nuclear power factory Spent Fuel Pool device for plugging according to claim 1, it is characterised in that: described stifled It is provided with isolation frame on Cancellation Missed plate, the leak stopping chamber, which is located at the isolation frame and encloses, to be set in the region to be formed.

3. million kilowatt nuclear power factory Spent Fuel Pool device for plugging according to claim 2, it is characterised in that: it is described every Four corners from the frame protrusion to its outside has extended to form two isolation edge strips, eight isolation edge strips with internal layer The sealing ring item connects so that the region between the sealing ring item and the isolation frame is divided into eight independent isolated areas Domain.

4. million kilowatt nuclear power factory Spent Fuel Pool device for plugging according to claim 2, it is characterised in that: described stifled Leakage mechanism further includes four support bases, and four support bases are fixedly installed in respectively in the four corners of the isolation frame.

5. million kilowatt nuclear power factory Spent Fuel Pool device for plugging according to claim 4, it is characterised in that: it is described every Four corners from frame offer mounting hole, connecting column are fixedly installed on four support bases, described in four Connecting column plugs respectively to be fixed in four mounting holes.

6. described in any item million kilowatt nuclear power factory Spent Fuel Pool device for plugging, feature exist according to claim 1~5 In: the leak stopping is intracavitary to be provided with spacing frame, and the spacing frame is fixedly installed in the top of the leak stopping chamber, and the spacing frame Four corners to its outside, protrusion has extended to form two separation edge strips, eight separation edge strips with the leak stopping chamber Side wall connect so that the region between the leak stopping chamber outer edge and the spacing frame is divided into eight independent separated regions.

7. described in any item million kilowatt nuclear power factory Spent Fuel Pool device for plugging, feature exist according to claim 1~5 In: each sealing ring item offers several separation annular grooves by sequence ring cloth away from the side of the leak stopping cover board.

8. described in any item million kilowatt nuclear power factory Spent Fuel Pool device for plugging, feature exist according to claim 1~5 In: the outer edge of the leak stopping cover board offers several assembly screw holes, and each sealing ring item offers several through holes, respectively The through hole and each assembly screw hole correspond, and each sealing ring item wears each through hole by clamping screw It is fixedly connected with each assembly screw hole with the outer edge of the leak stopping cover board.

9. described in any item million kilowatt nuclear power factory Spent Fuel Pool device for plugging, feature exist according to claim 1~5 In: it further includes vacuum evacuation device, and the aspirating hole for connecting the vacuum evacuation device is offered on the leak stopping cover board, described Aspirating hole is connected with the leak stopping chamber, and the vacuum evacuation device is connected by high-pressure hose with the aspirating hole.

10. million kilowatt nuclear power factory Spent Fuel Pool device for plugging according to claim 9, it is characterised in that: it is also Including hoisting mechanism, the hoisting mechanism includes mounting base and Shackle assembly, and the mounting base includes fixed part and round plate, institute It states fixed part and is fixedly installed in the center position on the leak stopping cover board and being located at institute's leak stopping cover board, the round plate is fixedly mounted In on the fixed part, the Shackle assembly is installed on the round plate.

11. million kilowatt nuclear power factory Spent Fuel Pool device for plugging according to claim 10, it is characterised in that: described Shackle assembly includes lifting lug part and two idler arms, the upper end of two idler arms two lateral walls with the lifting lug part respectively It is rotatably connected, the lower end of two idler arms offers guiding elongated slot, and the two lateral walls of the lifting lug part are respectively set There is connector, two connectors are provided with pin close to one end of the two guiding elongated slots, and two pins slide respectively Be set in the two guiding elongated slots, the lower end of two idler arms is equipped with fastener, two fasteners with the circle Pan portion is interlocked.

12. million kilowatt nuclear power factory Spent Fuel Pool device for plugging according to claim 11, it is characterised in that: described Lifting lug part includes lifting portion and limiting section, and the upper end of two idler arms can be rotated with the two lateral walls in the lifting portion respectively Connection, the lower end in the lifting portion offer installation cavity, and the upper end of the limiting section is set in the installation cavity, the lifting portion Side wall be fixedly installed with driving cylinder, the driving end of the driving cylinder is equipped with pin member, and the upper end of the limiting section opens up There is the pin hole for accommodating the pin member, the lifting lug part enters the installation cavity by the pin member and is inserted in described The restriction with the two idler arm relative positions is realized in pin hole.

13. million kilowatt nuclear power factory Spent Fuel Pool device for plugging according to claim 12, it is characterised in that: described The lower end of limiting section is equipped with axis of cone part, and the projected side wall of the axis of cone part extends to form restraining position ring block rank, on the round plate The accommodating hole for accommodating the axis of cone part is offered, the accommodating hole penetrates through the round plate and the fixed part, the limit The hole edge of position loop order and the accommodating hole abuts against, and the upper end in the lifting portion is equipped with main suspension ring.

14. million kilowatt nuclear power factory Spent Fuel Pool device for plugging according to claim 10, it is characterised in that: described The side of fixed part is provided with the fixture for clamping the high-pressure hose, and intercommunicating pore, the installation are offered in the fixture Connection chamber is offered in seat, the high-pressure hose is connected by the intercommunicating pore with the connection chamber, the connection chamber and institute Aspirating hole is stated to be connected.

15. million kilowatt nuclear power factory Spent Fuel Pool device for plugging according to claim 10, it is characterised in that: described The four corners protrusion that the side wall of fixed part is respectively facing the leak stopping cover board is extended to form there are four stiffening plate, four stiffening plates It is fixedly installed on the leak stopping cover board away from one end of the fixed part.

16. million kilowatt nuclear power factory Spent Fuel Pool device for plugging according to claim 15, it is characterised in that: described Hoisting mechanism further includes four fixing seats, four fixing seats be fixedly installed on the leak stopping cover board and respectively with four Stiffening plate is fixedly connected away from one end of the fixed part.

17. according to the million kilowatt nuclear power factory Spent Fuel Pool device for plugging described in claim 15, it is characterised in that: four institutes It states and offers loss of weight cavity in stiffening plate.

18. according to the million kilowatt nuclear power factory Spent Fuel Pool device for plugging described in claim 15, it is characterised in that: described to hang Mounting mechanism further includes that four positions adjust lifting lug, and four positions adjust lifting lug and are fixedly installed in four stiffening plates respectively Away from one end of the fixed part.