CN116631666A - Underwater transfer system - Google Patents
Underwater transfer system Download PDFInfo
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- CN116631666A CN116631666A CN202310498659.3A CN202310498659A CN116631666A CN 116631666 A CN116631666 A CN 116631666A CN 202310498659 A CN202310498659 A CN 202310498659A CN 116631666 A CN116631666 A CN 116631666A
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- Prior art keywords
- transfer
- trolley
- transfer trolley
- underwater
- maintenance
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- 238000012546 transfer Methods 0.000 title claims abstract description 275
- 238000012423 maintenance Methods 0.000 claims abstract description 71
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000002915 spent fuel radioactive waste Substances 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 238000011084 recovery Methods 0.000 claims abstract description 35
- 238000003860 storage Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims description 77
- 238000009434 installation Methods 0.000 claims description 30
- 230000033001 locomotion Effects 0.000 claims description 20
- 238000012544 monitoring process Methods 0.000 claims description 10
- 230000006698 induction Effects 0.000 claims description 6
- 230000002457 bidirectional effect Effects 0.000 claims description 5
- 101000927062 Haematobia irritans exigua Aquaporin Proteins 0.000 description 23
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000009471 action Effects 0.000 description 6
- 238000007689 inspection Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000003754 machining Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000018199 S phase Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000005865 ionizing radiation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F5/00—Transportable or portable shielded containers
- G21F5/06—Details of, or accessories to, the containers
- G21F5/14—Devices for handling containers or shipping-casks, e.g. transporting devices loading and unloading, filling of containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/28—Duplicate, e.g. pivoted, members engaging the loads from two sides
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
- G21C19/06—Magazines for holding fuel elements or control elements
- G21C19/07—Storage racks; Storage pools
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/32—Apparatus for removing radioactive objects or materials from the reactor discharge area, e.g. to a storage place; Apparatus for handling radioactive objects or materials within a storage place or removing them therefrom
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
The invention discloses an underwater transfer system, which comprises a transfer track, a transfer trolley, an emergency recovery mechanism and a crane, wherein the transfer track is paved in a transfer water channel, and the transfer trolley is arranged on the transfer track in a sliding manner and is used for transferring spent fuel between a discharge water tank and a storage water tank; the emergency recovery mechanism is arranged on an overhaul platform arranged above the transfer water channel and connected with the transfer trolley, and is used for dragging the transfer trolley to move along the transfer track towards the maintenance platform; the crane is arranged near the maintenance platform and used for lifting the transfer trolley out of the transfer water channel to the maintenance platform for maintenance after the transfer trolley is pulled to a limit position by the emergency recovery mechanism, and re-placing the transfer trolley after maintenance on the transfer rail. The system can realize the transportation of the spent fuel in the transportation water channel, and has the advantages of simple structure, low failure rate, high reliability and convenient maintenance.
Description
Technical Field
The invention belongs to the technical field of nuclear industry, and particularly relates to an underwater transportation system for realizing spent fuel transportation in a transportation water channel.
Background
The receiving and storing of nuclear spent fuel is the first key link of a spent fuel post-treatment plant. After the transport container loaded with the spent fuel assembly is abutted to a spent fuel post-treatment plant, the spent fuel assembly is lifted to a discharge water tank by a crane after decontamination, and then the spent fuel assembly is transported to a storage water tank for storage through a transportation water channel. Because the spent fuel assembly is still highly radioactive, all transport processes are performed underwater.
Transfer flumes are an important ligament in connection with the discharge and storage tanks, which are generally elongate in shape and have a depth. The bottom of the device is horizontal or has a certain gradient (0-20 degrees). The spent fuel transfer system operates in the transfer flume and completes the transfer of the spent fuel assembly between the discharge pool and the storage pool.
Generally, due to the specificity of underwater work. The conventional spent fuel transportation system realizes transportation of spent fuel in a transportation water channel by means of reciprocating motion of a steel wire rope traction system comprising a winding drum, a steel wire rope and the like which are arranged above the water surface to traction an underwater transportation vehicle in the transportation water channel. However, due to the requirement for bidirectional movement of the transfer trolley, the steel wire rope traction system has the advantages of complex structure, more fault points, high fault rate and poor reliability. Once the transfer car and traction system fail (e.g., wire rope breaks, pulley breaks, bearing wear, etc.), if maintenance is desired, it is necessary to empty the transfer waterway and its communicating pool of water, which is not optimistic in terms of cost or efficiency due to the large volume of water. In addition, the transportation water channel is long and narrow, deep and has residual radioactivity inside, so that the transportation water channel is unfavorable to maintenance personnel in terms of space and dosage, and is inconvenient to examine and maintain.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art, and provides an underwater transportation system which can realize transportation of spent fuel in a transportation water channel, and has the advantages of simple structure, low failure rate, high reliability and convenient maintenance.
The technical scheme for solving the technical problems is as follows:
an underwater transfer system comprises a transfer track, a transfer trolley, an emergency recovery mechanism and a crane, wherein the transfer track is paved in a transfer water channel, and the transfer trolley is slidably arranged on the transfer track and is used for transferring spent fuel between a discharge water tank and a storage water tank; the emergency recovery mechanism is arranged on an overhaul platform arranged above the transfer water channel and connected with the transfer trolley, and is used for dragging the transfer trolley to move along the transfer track towards the maintenance platform; the crane is arranged near the maintenance platform and used for lifting the transfer trolley out of the transfer water channel to the maintenance platform for maintenance after the transfer trolley is pulled to a limit position by the emergency recovery mechanism, and re-placing the transfer trolley after maintenance on the transfer rail.
Preferably, the transfer trolley comprises a trolley body, a supporting wheel, an underwater motor and a sliding gear meshing assembly, the trolley body is arranged on the transfer rail in a sliding manner through the supporting wheel, driving installation seats are arranged on two sides of the trolley body, the underwater motor and the sliding gear meshing assembly are arranged on the driving installation seats, the output end of the underwater motor is connected with the sliding gear meshing assembly, a transmission rack is arranged on the transfer rail, the transmission rack and the sliding gear meshing assembly are matched to form a meshing transmission structure, and the transmission rack on the transfer rail is meshed through the underwater motor driving sliding gear meshing assembly to drive the transfer trolley to do bidirectional movement along the transfer rail.
Preferably, the number of the supporting wheels is more than two, the same side of each pair of supporting wheels is provided with a first wheel, the other side of each pair of supporting wheels is provided with a second wheel, the first wheel is provided with a bell-mouth-shaped rim which can be matched with the transfer rail, and the second wheel is a cylindrical surface wheel.
Preferably, the sliding gear meshing assembly comprises a mounting fixing part, a bearing, a mounting rotating part, a sliding transmission shaft and a transmission gear, wherein the mounting fixing part is arranged on the driving mounting seat, the mounting rotating part is movably embedded in the mounting fixing part through the bearing, and a sliding space is arranged in the mounting rotating part; one end of the sliding transmission shaft is movably inserted into the sliding space and can rotate together with the installation rotating part; the transmission gear is arranged at the other end of the sliding transmission shaft and is matched with the transmission rack to form the meshing transmission structure.
Preferably, the transmission rack is arranged on the outer side face of the transfer rail.
Preferably, the maximum length of the slip space is greater than the width of the drive rack.
Preferably, the crane is provided with a special lifting appliance, the special lifting appliance comprises a hook, a lifting appliance main body frame and a guide lifting beam, the appearance of the lifting appliance main body frame is matched with the appearance of the transfer trolley, and the special lifting appliance is covered on the transfer trolley when the transfer trolley is lifted out; the hook is arranged at the bottom of the hanger main body frame and used for being connected with the transfer trolley; the guide lifting beam is arranged at the top of the lifting appliance main body frame, and a lifting rope of the crane is connected to the guide lifting beam.
Preferably, the transport trolley is provided with a monitoring sensor, the monitoring sensor comprises an encoder and a fixed-point induction sensor, the encoder is arranged on the underwater motor, and the fixed-point induction sensor is arranged on the trolley body and used for real-time positioning and fixed-point stop of the transport trolley on a transport track.
Preferably, the emergency recovery mechanism comprises a winch, a pulley block, a balancing weight and a traction rope, wherein the winch is arranged on the overhaul platform, the pulley block comprises a redirecting pulley and a counterweight pulley, one end of the traction rope is fixed on the winch, and the other end of the traction rope is connected with the transfer trolley after passing through the counterweight pulley and the redirecting pulley so as to traction the transfer trolley to the lower part of the overhaul platform; the counterweight pulley is arranged on the traction rope in a sliding manner, and the counterweight block is arranged on the counterweight pulley, so that the counterweight pulley can drive the counterweight block to move up and down together when the transfer trolley moves on the transfer track.
Preferably, the system further comprises a guide groove, the guide groove is arranged on the path of the up-and-down motion of the counterweight pulley, the counterweight is arranged in the guide groove and can move up and down in the guide groove, and an end limiting part is arranged on the guide groove.
Compared with the prior art, the underwater transportation system has at least the following beneficial effects:
(1) Through setting up the transfer dolly from taking power drive unit, have certain load capacity and motion ability, can load the spent fuel hanging flower basket and load and move on transferring the track after the spent fuel subassembly to realize the transfer between the unloading pond and the storage pond of spent fuel subassembly in transferring the water course intercommunication.
(2) Through set up one and prepare two sets of drive arrangement and the gear meshing subassembly that slides on transferring the dolly, can carry out the meshing transmission with the transmission rack on the transportation track, drive the dolly from this, compare in the prior art, simple structure, the fault point is few, the fault rate is low, the maintenance degree of difficulty is little.
(3) Through setting up emergent recovery mechanism and crane, in case the maintenance platform that breaks down, can follow on the water is operated, pull the transportation dolly that breaks down back behind the maintenance platform below and lift out again to the maintenance platform and examine the maintenance, examine after the maintenance work finishes, reuse the crane and will transport the dolly playback to transporting the track, compare in prior art, need not the drainage, time and cost have been saved, the production line operating ratio has been improved, also need not the staff to get into and transport the water course or examine under water and maintain, can ensure that the staff is exempted from the dual threat of narrow space and ionizing radiation, and is convenient, safety again.
(4) Through setting up counter weight pulley and balancing weight, can make the haulage rope remain certain tension throughout, avoid the haulage rope to appear lax or stacking in the motion process of transportation dolly.
(5) Through setting up guide slot restriction direction handle in transportation water course both sides, can avoid the hoist to take place too big position deflection, improve transportation dolly and promote and fall the degree of accuracy and the stability of putting.
(6) Through setting up the space that slides, can make drive gear retract under drive rack's reaction force when the drive gear and the drive rack phase place of transporting the dolly are not in the meshing state completely, guarantee before transporting the dolly playback to transport on the track, can make it to pull the transportation dolly through retrieving winch wire rope (haulage rope) and do slight removal after transporting the dolly playback to transporting on the track, until drive rack and drive gear's phase place is in the meshing state, drive gear stretches out and forms the meshing with drive rack this moment, can reduce installation accuracy and fault rate.
(7) All parts such as transportation track, transportation dolly, emergent recovery mechanism in this system adopt modularized design, and the function is relatively independent, makes up and the split easily each other, and the reliability is high, is convenient for install and dismantle.
Drawings
FIG. 1 is a side view of an underwater transit system in an embodiment of the present invention;
FIG. 2 is a front view of an underwater transit system in an embodiment of the present invention;
FIG. 3 is a front view of an underwater transit system in an embodiment of the present invention;
FIG. 4 is a front view of a transfer rail in an embodiment of the invention;
FIG. 5 is an end view of a transfer rail in an embodiment of the invention;
FIG. 6 is a schematic structural diagram of an inspection platform according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a special lifting appliance in an embodiment of the present invention;
FIG. 8 is an enlarged view of a portion of FIG. 7;
FIG. 9 is a side view of a transfer trolley in an embodiment of the present invention;
FIG. 10 is a front view of a transfer cart in an embodiment of the invention;
FIG. 11 is a left side view of a transfer trolley in an embodiment of the present invention;
FIG. 12 is a schematic view of a slip gear engagement assembly according to an embodiment of the present invention;
fig. 13 is a schematic structural view of the emergency recovery mechanism in the embodiment of the present invention.
In the figure: 1-a transfer water channel, 2-a transfer track, 3-a transfer trolley and 4-an emergency recovery mechanism;
21-track, 22-drive rack, 23-track tread and 24-mechanical limiting piece;
31-vehicle body, 32-first wheel, 33-second wheel, 34-transmission gear train, 35-lifting column, 36-position monitoring sensor, 37-driving installation seat, 38-underwater motor, 39-sliding gear meshing component and 301-shackle; 302-crash cushion; 303-a container;
41-winch, 42-top bend pulley, 43-counterweight pulley, 44-counterweight, 45-bottom bend pulley, 46-hauling rope;
51-overhauling walking board, 52-guide groove, 53-guide groove fixing part and 54-end limiting piece;
61-of a mounting fixing part, 62-of a bearing, 63-of a mounting rotating part, 64-of a sliding transmission shaft, 65-of a transmission gear, 66-of an end positioning part, 67-of a sliding limiting plate and 68-of a sliding space;
71-hooks, 72-hanger body frames, 73-guide handles.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, a clear and complete description of the technical solutions of the present invention will be provided below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be noted that, the terms "upper" and the like indicate an orientation or a positional relationship based on the orientation or the positional relationship shown in the drawings, and are merely for convenience and simplicity of description, and do not indicate or imply that the apparatus or element in question must be provided with a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "configured," "mounted," "secured," and the like are to be construed broadly and may be either fixedly connected or detachably connected, or integrally connected, for example; can be directly connected, can be indirectly connected through an intermediate medium, and can be communicated with the inside of two elements. The specific meaning of the above terms in the present invention will be understood by those skilled in the art in specific cases.
Aiming at the problems of complex structure, multiple fault points, high fault rate, poor reliability, inconvenient inspection and maintenance and the like in the prior art, the invention provides an underwater transfer system, which comprises a transfer rail, a transfer trolley, an emergency recovery mechanism and a crane, wherein:
the transfer rail is paved in the transfer water channel, and the transfer trolley is slidably arranged on the transfer rail and is used for transporting spent fuel between the discharge water tank and the storage water tank;
the emergency recovery mechanism is arranged on an overhaul platform arranged above the transfer water channel and connected with the transfer trolley, and is used for dragging the transfer trolley to move along the transfer track towards the maintenance platform;
the crane is arranged near the maintenance platform and used for lifting the transfer trolley out of the transfer water channel to the maintenance platform for maintenance after the transfer trolley is pulled to a limit position by the emergency recovery mechanism, and re-placing the transfer trolley after maintenance on the transfer rail.
Example 1
As shown in fig. 1 to 3, the present embodiment discloses an underwater transfer system for realizing spent fuel transportation in a transfer waterway 1 between a discharge pool and spent fuel storage or the like, the transfer system including a transfer rail 2, a transfer trolley 3, an emergency recovery mechanism 4, and a crane, wherein:
the transfer rail 2 is paved in the transfer water channel 1, and the transfer trolley 3 is arranged on the transfer rail 2 in a sliding way and is used for loading a spent fuel assembly and transporting spent fuel between the unloading water tank and the storage water tank;
the emergency recovery mechanism 4 is arranged on an overhaul platform arranged above the transfer water channel 1 and connected with the transfer trolley 3, and is used for pulling the transfer trolley 3 to move along a transfer track towards a maintenance point when a fault occurs;
the crane is arranged near the maintenance platform and is used for lifting the transfer trolley 3 from the transfer water channel to the maintenance platform for maintenance after the transfer trolley 3 is pulled to move to the limit position by the emergency recovery mechanism 4 and then placing the transfer trolley 3 after maintenance on the transfer track 2 again.
In particular, the transfer flume 1 communicates with a discharge pool and a storage pool in a spent fuel aftertreatment plant. As shown in fig. 4 and 5, the transfer rail 2 includes a rail 21, a rail beam, a rail fixing assembly, and the like. The track beam is arranged at the bottom of the transfer water channel 1. The rails 21 generally adopt two rails with a certain interval, the interval between the two rails 21 can be specifically selected according to factors such as the specification of the required transfer trolley 3, the interval between the two rails 21 in the embodiment is preferably 600-1000 mm, so that the too low transportation efficiency of the spent fuel assembly caused by too small width can be avoided, the difficulty in ensuring the installation error of the central distance between the rails on the two sides caused by too large width can be avoided, and the supporting wheels on the two sides of the transfer trolley are prevented from being greatly worn due to the contact with the rails caused by the relation of deformation deflection, so that the reliability is poor and the precision is influenced. The rails 21 are arranged on the rail beams through the rail fixing assembly, the rails extend from the discharging water pool to the storage water pool, the upper surfaces of the two rails 21 are rail treads 23, and the transfer trolley 3 is arranged on the rail treads 23. Mechanical limiting pieces 24 are respectively arranged at two ends of the rail tread 23 of the rail 21 so as to prevent the transfer trolley 3 from falling off the rail 21 after moving to the limit.
The maintenance platform can be arranged at any one end of the transfer water channel 1, as shown in fig. 6, a maintenance walking platform 51 is arranged on the maintenance platform, the maintenance walking platform 51 spans over the transfer water channel 1, two ends of the maintenance walking platform 51 can extend along two sides of the transfer water channel 1 for a distance to form a '' -shaped maintenance walking platform, a middle vacancy of the '' -shaped maintenance walking platform 51 is used for supplying the transfer trolley 3, and when the emergency recovery mechanism 4 pulls the transfer trolley 3 to the lower position of the middle vacancy, the transfer trolley 3 is lifted out of the water surface of the transfer water channel 1 through a crane.
The crane is arranged above the maintenance platform, and a special lifting appliance matched with the transfer trolley 3 is arranged on the crane.
In this embodiment, as shown in fig. 7 and 8, the special hanger includes a quick hanger 71 (hereinafter referred to as a hanger), a hanger main body frame 72, and a guide handle 73, wherein: the hanger 71 is arranged at the bottom of the hanger main body frame 72 and is used for being connected with a lifting hole of the transfer trolley 3, the width of the hanger is smaller than the size of the lifting hole, and the shapes of the hanger 71 and the lifting hole can ensure that the special hanger can be smoothly put into place under the condition that no one supports the hanger under water; the guide lifting beam 73 is arranged at the top of the lifting appliance main body frame 72, the lifting rope of the crane is connected to the guide lifting beam 73, guide grooves (not shown in the figure) can be arranged at two sides of the transfer water channel 1, and two ends of the guide lifting beam 73 are slidably arranged in the guide grooves and limited by the guide grooves, so that the special lifting appliance can be prevented from being too large in position deviation; the appearance of hoist main part frame 72 and the appearance looks adaptation of transfer dolly 3 to cover hoist main part frame 72 and establish on transfer dolly 3 when hanging out the transfer dolly, both conveniently connect the lifting hole with couple 71, can prevent the frame of transfer dolly to a certain extent again and rock.
In some embodiments, as shown in fig. 9, 10, 11, the transfer trolley includes a vehicle body 31, support wheels, an underwater motor 38, and a skid gear engagement assembly 39.
Specifically, the vehicle body 31 is arranged on the transfer rail 2 through a supporting roller, a container 303 for containing the spent fuel assembly is arranged on the vehicle body, and the container is preferably arranged on the vehicle body in a connection mode such as a bolt and the like which is convenient to mount and dismount. Drive mounts 37 are provided on both sides of the vehicle body 31. The underwater motor 38 and the slipping gear engagement assembly 39 are both disposed on the drive mount 37. The underwater motor 38 is connected with a power supply source and a control system (such as a commercially available general control system) comprising a control console and a control cabinet, which are derived from the outside of the transportation water channel 1, through a cable and a cable winding and unwinding assembly, so as to supply power and remotely control, namely, the transportation trolley in the embodiment is provided with a power driving unit, and compared with the conventional general spent fuel transportation system, the transportation trolley is provided with a passive traction type steel wire rope traction system, which is simpler in structure, higher in reliability and more convenient to operate. The output end of the underwater motor 38 is connected with the sliding gear meshing assembly 39, the transfer rail 2 is provided with a transmission rack 22, the transmission rack 22 is matched with the sliding gear meshing assembly 39 to form a meshing transmission structure, the underwater motor 38 drives the sliding gear meshing assembly 39 to mesh with the transmission rack 22 on the transfer rail 2 to drive the transfer trolley 3 to do bidirectional (linear) movement along the transfer rail 2, and therefore spent fuel transportation between a discharge pool and spent fuel storage is achieved.
The car body 31 is further provided with a shackle 301 and a lifting column 35, wherein: the shackle 301 is provided at one end close to the emergency recovery mechanism 4 so as to connect the emergency recovery mechanism 4; the lifting columns 35 may be disposed on an upper end surface of the vehicle body 31, and lifting holes adapted to the hooks 71 in the special lifting tool are disposed on the lifting columns 35, and the number of the lifting columns 35 is preferably plural, for example, four lifting columns 35 are disposed, and the four lifting columns 35 are preferably disposed on four corners of the vehicle body 31. Correspondingly, the number of hooks 71 on the special lifting tool is a plurality of hooks matched with the lifting holes, for example, four hooks can be correspondingly arranged.
In this embodiment, the car body may further be provided with a crash damper 302, which is preferably made of polyurethane, and when the transfer trolley moves to the extreme positions at the two ends of the transfer track, the crash damper abuts against the mechanical limiting member 24, so that mechanical crash energy can be effectively absorbed.
In some embodiments, the number of support wheels is more than two, each pair of support wheels having a first wheel 32 on the same side and a second wheel 33 on the other side, wherein: the first wheel 32 is provided with a bell-mouth-shaped rim which can be matched with the transfer rail 2, the proximal end of the bell mouth is smaller in size and consistent with the width of the rail, the bell-mouth-shaped rim and the rail are matched with each other through machining precision (interference fit), the distal end of the bell mouth is larger in size, the rail can conveniently enter the rim range of the first wheel 32, and matched guiding is completed through the inclined plane of the bell mouth, so that the rail tread and the proximal end of the bell mouth with smaller size are finally matched, the first wheel 32 can be easily placed on the transfer rail 2, meanwhile, the movement of the transfer trolley 3 in the vertical direction along the transfer rail 2 can be effectively limited, transverse movement of the supporting wheel during walking on the rail is avoided, and the running straightness of the transfer trolley is guaranteed; the second wheels 33 are cylindrical wheels which have no restraining effect on the transfer trolley 3 in the vertical direction of the transfer rail 2. Through the arrangement, the center distance of the two rails of the transfer rail 2 and the center of each supporting wheel do not need to be completely consistent, and therefore the requirements on the installation precision of the transfer rail, the machining precision of the supporting wheels and the like can be reduced.
In this embodiment, as shown in fig. 9, the transfer trolley 3 has four supporting wheels, that is, the number of the supporting wheels is two, each pair of supporting wheels includes left and right side wheels, the two side wheels in each pair of supporting wheels are connected through a transmission wheel train 34 including a bearing and a transmission shaft and are mounted on a vehicle body 31 of the transfer trolley 3, two supporting wheels on one side of the vehicle body are first wheels 32, and two supporting wheels on the other side are second wheels 33.
In some embodiments, as shown in fig. 12, the slip gear engagement assembly 39 includes a mounting fixture 61, a bearing 62, a mounting rotational 63, a slip drive shaft 64, and a drive gear 65.
Specifically, the mounting fixing portions 61 are provided on the drive mounting seats 37 on both sides of the vehicle body 31, the mounting rotating portions 63 are movably fitted into the mounting fixing portions 61 through bearings 62, and a sliding space 68 is provided in the mounting rotating portions 63. One end of the sliding transmission shaft 64 is movably inserted in the sliding space 68 and can rotate together with the mounting rotating part 63, a spring is arranged in the sliding space 68, one end of the spring is propped against the sliding transmission shaft 64, and the other end of the spring is propped against the mounting rotating part 63. The sliding transmission shaft 64 is sleeved with a sliding limiting plate 67, and the sliding limiting plate 67 is connected with the installation rotating part 63 so as to prevent the sliding transmission shaft 64 from being separated from the sliding space 68. The drive gear 65 is provided at the other end of the slip drive shaft 64 and is adapted to the drive rack 22 to form the meshing drive arrangement. The slide drive shaft 64 is also provided with an end positioning portion 66 to prevent the drive gear 65 from being removed from the slide drive shaft 64.
Under normal conditions, the sliding transmission shaft 64 is kept to be maximum in length L of the sliding space 68 under the action of gravity or spring force in the sliding space 68, at this time, the centers of the transmission rack 22 and the transmission gear 65 are basically overlapped and are in the maximum overlap degree state, so that torque of an underwater motor can be fully converted into driving force, the transmission gear 65 in the sliding gear meshing assembly 39 is driven to rotate, and the transmission rack 22 on the transfer track 2 is meshed to drive the transfer trolley 3 to do bidirectional (linear) motion along the transfer track 2, so that spent fuel transportation is realized.
In this embodiment, the sliding transmission shaft 64 and the installation rotating portion 63 are preferably connected in a matching relationship of a spline, a flat key or a regular polygon shaft and a shaft sleeve, that is, one end of the sliding transmission shaft 64 is movably inserted into a sliding space 68 of the installation rotating portion 63 through the matching of the spline, the flat key or the regular polygon shaft and the shaft sleeve, so that the sliding transmission shaft 64 and the installation rotating portion 63 can always rotate together, but the distance between the sliding transmission shaft 64 and the installation rotating portion 63, that is, the sliding space L, may be changed according to the stress condition.
Since the transfer trolley 3 has a degree of freedom of lateral movement with respect to the rail when it is not fully lowered onto the rail tread 23, this degree of freedom of lateral movement is eliminated and a positioning relationship is created when the two are mated, and the meshing relationship between the drive gear 65 and the drive rack 22 is correspondingly established. The slip space is arranged, so that when the transfer trolley plays back the track, the phase of the transfer gear 65 and the phase of the transfer rack 22 can be finely adjusted to realize engagement, and the matching relationship between the transfer gear 65 and the transfer rack 22 can not interfere and influence the action of the transfer gear 65 and the transfer rack 22.
In this embodiment, the transmission rack 22 is preferably disposed on the side (outside) of the track 21, that is, the transmission rack 22 on the transfer track 2 is laterally mounted, which can effectively prevent sundries in the transfer water channel 1 from falling onto the transmission rack 22, interfere with the engagement of the transmission gear 65 and the transmission rack 22, and ensure that the transfer trolley 3 is lifted and placed in the process (for example, the transfer trolley 3 is lifted from the transfer water channel 1 to the maintenance platform for maintenance and is lifted onto the transfer track 2 again after maintenance), so that the transmission gear 65 and the transmission rack 22 can be simply separated and engaged, thereby reducing the difficulty of disassembly and installation.
In order to further ensure that the transmission gear 65 and the transmission rack 22 can smoothly form a meshing relationship under the action of the sliding gear meshing assembly 39, the edges of the transmission gear 65 and the transmission rack 22 in the embodiment are subjected to conventional machining such as rounding, chamfering and the like, so that the difficulty of forming the meshing relationship between the transmission gear 65 and the transmission rack 22 is reduced as much as possible.
In some embodiments, as shown in fig. 9, a position monitoring sensor 36 is provided on the transfer trolley 3, the position monitoring sensor 36 including an encoder and a fixed point induction sensor. The encoder is arranged on the underwater motor 38, the fixed-point induction sensor is arranged on the car body 31, the two position monitoring sensors 36 are connected with the control system and are matched with each other, so that the real-time positioning and fixed-point stopping of the transfer trolley 3 on the transfer rail 2 can be realized, namely, the system of the embodiment has the functions of on-line position monitoring and fixed-point stopping.
In order to ensure the reliability of the transfer trolley 3, multiple sets of driving devices are respectively arranged on two sides of the transfer trolley 3 in the embodiment, and preferably two sets of driving devices are arranged, namely two sets of underwater motors 38 are respectively arranged on two sides of the transfer trolley 3, and the two sets of driving devices are used for one time. Normally, one set is powered and the other set is driven. When one of the sets fails, the other set is started. When two sets of driving devices fail, the transfer trolley 3 cannot be driven to continue to be transported by means of power supply of an external power supply, and at this time, the transfer trolley 3 needs to be pulled to the installation side (namely, below the overhaul platform) of the emergency recovery mechanism 4 through the emergency recovery mechanism 4.
In some embodiments, as shown in fig. 13, the emergency recovery mechanism 4 includes a winch 41, a pulley block, a counterweight 44, and a hauling rope 46, where the winch 41 is disposed above the transfer water channel 1, for example, on the maintenance platform, the pulley block includes a redirecting pulley and a counterweight pulley 43, one end of the hauling rope 46 is fixed on the winch 41, and the other end of the hauling rope is connected to the shackle 301 on the transfer trolley 3 after passing through the counterweight pulley 43 and the redirecting pulley, so as to pull the transfer trolley 3 to below the maintenance platform; the counterweight pulley 43 is slidably arranged on the traction rope 46, is a movable pulley, and the counterweight 44 is arranged on the counterweight pulley 43, so that the counterweight pulley 43 can drive the counterweight 44 to move up and down together when the transfer trolley 3 moves on the transfer rail 2.
Specifically, winch 41 is a bi-directional winch that is mounted on an inspection deck 51 within the inspection deck. The diverting pulleys comprise a top diverting pulley 42 and a bottom diverting pulley 45, wherein the top diverting pulley 42 can be arranged on an overhaul walking table 51 in an overhaul platform above the transfer water channel 2, and the bottom diverting pulley 45 can be arranged in the transfer water channel 1. The position height of the bottom redirecting pulley 45 is preferably identical to the position height of the shackle 301 on the transfer trolley 3, so that the traction rope 46 can sequentially wind the neck counterweight pulley 43, the top redirecting pulley 42 and the bottom redirecting pulley 45 to apply an acting force parallel to the transfer rail 2 to the transfer trolley 3, and the transfer trolley 3 is prevented from being separated from the transfer rail 2 under the action of the traction rope 46.
In this embodiment, the pull cord 46 is preferably a steel cord, more preferably a stainless steel cord, that prevents corrosion and failure from easily occurring under water.
In some embodiments, as shown in fig. 6, the system further includes a guide groove 52, the guide groove 52 is disposed on a path of up-and-down movement of the counterweight pulley 43, for example, an upper end of the guide groove 52 may be fixed on the maintenance platform 51, a lower end of the guide groove 52 is supported on a side wall of the transfer water channel 1 through a guide groove fixing portion 53, the counterweight 44 is disposed in the guide groove 52 and can move up-and-down in the guide groove 52, thereby restricting a movement track of the counterweight pulley 3, avoiding a change of a position thereof, and when the counterweight pulley 43 reaches an upper end or a lower end limit of the guide groove 52, the guide groove 52 can effectively restrict the counterweight pulley 43 to be relatively fixed, thereby improving a system operation stability. An end stop 54 is provided on the bottom of the guide slot 52 to prevent the weight 44 from falling out after it has fallen to a limit.
In normal operation, winch 41 is stationary. When the transfer trolley 3 moves on the transfer track 2, the counterweight pulley 43 drives the counterweight 44 to move up and down together, and the counterweight 44 can enable the traction rope 46 to always maintain a certain tensile force, so that the traction rope is not loosened or overlapped. Because the counterweight pulley 43 is a movable pulley, when the movement distance of the transfer trolley 3 is S, the up-and-down movement of the counterweight pulley 43 is S/2, the descending height of the counterweight pulley 43 does not reach the bottom of the transfer water channel 1 under the condition that the depth and the length of the transfer water channel 1 are almost the same, the length of the guide groove 52 does not need to reach the bottom of the transfer water channel 1, and even if the transfer water channel 1 and the water in the communication water tank are not required to be discharged completely during maintenance due to faults, the maintenance is more convenient and faster.
When the transfer trolley breaks down, firstly, the winch 41 is rotated to enable the counterweight pulley 43 and the counterweight 44 to ascend until the counterweight pulley 43 and the counterweight 44 reach the ascending limit position, and then, the winch 41 is continuously rotated again, the transfer trolley 3 moves towards the installation side of the emergency recovery mechanism 4 under the action of the pulling force of the pulling rope 46 until the transfer trolley 3 is pulled to a proper position below the maintenance platform (for example, moves to the limit position of one end, close to the maintenance platform, of the transfer rail 2); then reversely rotating the winch 41 to enable the counterweight pulley 43 and the counterweight 44 to descend until the counterweight pulley 43 and the counterweight 44 descend to reach the position of the end limiting piece 54, and then continuously reversely rotating the winch 41, wherein the hauling rope 46 is separated from the counterweight pulley 43 and hangs in a space below the counterweight pulley 43, and the special lifting appliance is lowered into the transfer water channel 1 by using the lifting appliance to match with the special lifting appliance, so that the hook 71 in the special lifting appliance is connected with a lifting hole on a lifting column 35 of the transfer trolley 3, and then the transfer trolley 3 is lifted out of the transfer water channel 1 to above the water surface, a worker approaches the transfer trolley 3 through a maintenance walking table 51 arranged in a maintenance platform and carries out maintenance on the transfer trolley, and the maintenance is mainly aimed at vulnerable parts such as an underwater motor 38, a position monitoring sensor 36 and the like in the transfer trolley, wherein in the process of lifting the transfer trolley 3, the winch 41 is required to be always rotated and the hauling rope 46 is always in a loose state, so that the hauling rope 46 has enough margin and the formation of constraint force on the lifting of the transfer trolley 3 is avoided;
after the inspection and maintenance are finished, the trolley is used for being matched with a special lifting appliance to lower the transfer trolley 3 again until the supporting wheels of the transfer trolley 3 are placed on the rail tread 23 of the transfer rail 2, and in the process, the winch 41 is required to be rotated all the time, so that the traction rope 46 is always in a loose state.
In some embodiments, the wheel edges of the counterweight sheave 43 and the diverting sheaves (including the top diverting sheave 42 and the bottom diverting sheave 45) may be provided with a general anti-drop device or anti-drop structure that can keep the traction rope 46 from dropping out of the rope grooves even if it is loose, so as to prevent the traction rope from dropping out of the rope grooves of the respective sheaves, and thus, the system of this embodiment does not need to worry about dropping out of the traction rope grooves of the respective sheaves during the winding and unwinding of the traction rope 46 (i.e., during the above-mentioned process of continuing to rotate the winch 41 so that the traction rope 46 will drop out of the counterweight sheave 43 and hang in the space below the counterweight sheave 43).
In some embodiments, the maximum length L of the slip space 38 is preferably greater than the width of the drive rack 22.
Specifically, since the transmission gear 65 and the transmission rack 22 may not be exactly aligned with each other during the process of being returned to the transfer rail 2 after the transfer trolley 3 is installed or inspected, at this time, the lower surface of the transmission gear 65 is located on the upper surface of the transmission rack 22 with a high probability, and the transmission rack 22 may generate an upward (as shown in fig. 9) reaction force on the transmission gear 65, so as to urge the sliding transmission shaft 64 to move upward in the sliding space 68. Therefore, the maximum length L of the slip space 68 is preferably greater than the width of the drive rack 22, which reduces installation and machining accuracy requirements and facilitates installation.
In the actual operation process, if the situation is met, the winch 41 can be rotated to enable the traction rope 46 to generate a pulling force on the transfer trolley 3, the transfer trolley 3 can slightly move after being stressed, and when the phase of the transmission gear 65 and the transmission rack 22 is in the meshed state in the moving process, the sliding transmission shaft 64 can be lowered to the lowest position under the action of gravity or spring force, and at the moment, the transmission gear 65 and the transmission rack 22 are in the meshed state.
It should be noted that, in the process of replaying the transfer trolley to the transfer rail 2 after installation or maintenance, the drop position of the transfer trolley 3 should be farther away from the side where the emergency recovery mechanism 4 is installed than the limit position to which the transfer trolley 3 can be pulled by the traction rope 46, that is, a certain distance is reserved between the drop position of the transfer trolley 3 and the limit position of the end, close to the emergency recovery mechanism 4, on the transfer rail 2, so as to ensure that the transfer trolley 3 can be pulled by the traction rope 46 and form the engagement relationship when the transmission gear 65 and the transmission rack 22 are not exactly in the engaged positional relationship. If, once it has occurred that the transfer trolley 3 has been pulled to the extreme position by the pull rope, the transmission gear 65 and the transmission rack 22 are still not in meshing relationship, then it is necessary to use the trolley in conjunction with a special lifting appliance to lift and drop the transfer trolley 3 again onto the transfer rail 2 remote from the extreme position until the transmission gear 65 and the transmission rack 22 are in meshing relationship.
The installation and use process of the underwater transportation system in this embodiment is further described below, specifically as follows:
at the time of first use installation, the installation is preferably completed before water has been injected in the transfer flume 1. Specifically, firstly, the transfer rail 2 is installed in the transfer water channel 1, then, the transfer trolley 3 and the emergency recovery mechanism 4 are installed, then, the transfer trolley and the emergency recovery mechanism are connected through a steel wire rope, and finally, after the whole system is debugged and tested, the water is injected into the transfer water channel 1 after confirming no errors.
When in transportation, the underwater motor 38 is connected with an external power supply, the underwater motor 38 is started through an external control system, so that the transportation trolley 3 reciprocates between the discharging water pool and the storage water pool along the transportation track 2, and the transportation of the spent fuel assembly in the transportation water channel is realized in the reciprocation process.
When two sets of driving devices of the transfer trolley 3 are failed, the emergency recovery mechanism 4 is started, the transfer trolley 3 is pulled to move along the transfer track 2 towards the maintenance point, and the transfer trolley 3 is pulled back to the maintenance platform position direction. And the transfer trolley 3 is lifted out of the water surface by using a crane above the maintenance position to be matched with a special lifting appliance for maintenance.
After the inspection and maintenance are finished, the transfer trolley 3 is played back to the transfer track 2 in the transfer water channel 1 for reuse by matching the crane with the special lifting appliance.
Compared with the prior art, the underwater transportation system of the embodiment has at least the following advantages:
(1) Through setting up the transportation dolly, have certain load capacity and motion ability, can load the spent fuel hanging flower basket and load and move on transporting the track after the spent fuel subassembly to realize the transfer between the unloading pond and the storage pond of spent fuel subassembly in transporting the water course intercommunication.
(2) Through set up a backup drive arrangement and the gear meshing subassembly that slides on the transportation dolly, can carry out the meshing transmission with the transmission rack on the transportation track, drive the transportation dolly from this, compare in the conventional art (i.e. the drive arrangement of transportation system all installs on water, drive and control by the cable from water to underwater through reel and wire rope winding system drive arrangement), simple structure, the fault point is few, the fault rate is low, the maintenance degree of difficulty is little.
(3) Through setting up emergent recovery mechanism and crane, in case the maintenance platform that breaks down, can follow on the water is operated, pull the transportation dolly that breaks down back behind the maintenance platform below and lift out again to the maintenance platform and examine the maintenance, examine after the maintenance work finishes, reuse the crane and will transport the dolly playback to transporting the track, compare in prior art, need not the drainage, time and cost have been saved, the production line operating ratio has been improved, also need not the staff to get into and transport the water course or examine under water and maintain, can ensure that the staff is exempted from the dual threat of narrow space and ionizing radiation, and is convenient, safety again.
(4) Through setting up counter weight pulley and balancing weight, can make the haulage rope remain certain tension throughout, avoid the haulage rope to appear lax or stacking in the motion process of transportation dolly.
(5) Through setting up guide slot restriction direction handle in transportation water course both sides, can avoid the hoist to take place too big position deflection, improve transportation dolly and promote and fall the degree of accuracy and the stability of putting.
(6) Through setting up the space that slides, can make drive gear retract under drive rack's reaction force when the drive gear and the drive rack phase place of transporting the dolly are not in the meshing state completely, guarantee before transporting the dolly playback to transport on the track, can make it to pull the transportation dolly through retrieving winch wire rope (haulage rope) and do slight removal after transporting the dolly playback to transporting on the track, until drive rack and drive gear's phase place is in the meshing state, drive gear stretches out and forms the meshing with drive rack this moment, can reduce installation accuracy and fault rate.
(7) All parts such as transportation track, transportation dolly, emergent recovery mechanism in this system adopt modularized design, and the function is relatively independent, makes up and the split easily each other, and the reliability is high, is convenient for install and dismantle.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (10)
1. An underwater transfer system is characterized by comprising a transfer track (2), a transfer trolley (3), an emergency recovery mechanism (4) and a crane,
the transfer rail is paved in the transfer water channel (1), and the transfer trolley is arranged on the transfer rail in a sliding manner and is used for transporting spent fuel between the discharge water tank and the storage water tank;
the emergency recovery mechanism is arranged on an overhaul platform arranged above the transfer water channel and connected with the transfer trolley, and is used for dragging the transfer trolley to move along the transfer track towards the maintenance platform;
the crane is arranged near the maintenance platform and used for lifting the transfer trolley out of the transfer water channel to the maintenance platform for maintenance after the transfer trolley is pulled to a limit position by the emergency recovery mechanism, and re-placing the transfer trolley after maintenance on the transfer rail.
2. An underwater transfer system as claimed in claim 1, characterized in that the transfer trolley comprises a vehicle body (31), support wheels, an underwater motor (38), and a slipping gear engagement assembly (39),
the car body is arranged on the transfer track through the supporting wheel slide, two sides of the car body are provided with driving installation seats (37), the underwater motor and the sliding gear meshing assembly are arranged on the driving installation seats, the output end of the underwater motor is connected with the sliding gear meshing assembly,
a transmission rack (22) is arranged on the transfer track, the transmission rack and the sliding gear meshing component are matched to form a meshing transmission structure,
the underwater motor drives the sliding gear meshing component to mesh with the transmission rack on the transfer rail to drive the transfer trolley to do bidirectional movement along the transfer rail.
3. An underwater transfer system as claimed in claim 2, wherein the number of support wheels is more than two, a first wheel (32) being provided on the same side of each pair of support wheels, a second wheel (33) being provided on the other side of each pair of support wheels,
the first wheel has a bell-mouthed rim capable of cooperating with the transfer rail,
the second wheel is a cylindrical wheel.
4. The subsea transfer system according to claim 2, wherein the slip gear engagement assembly comprises a mounting fixture (61), a bearing (62), a mounting rotational portion (64), a slip drive shaft (64), a drive gear (65),
the installation fixing part is arranged on the driving installation seat, the installation rotating part is movably embedded in the installation fixing part through the bearing, and a sliding space (68) is arranged in the installation rotating part;
one end of the sliding transmission shaft is movably inserted into the sliding space and can rotate together with the installation rotating part;
the transmission gear is arranged at the other end of the sliding transmission shaft and is matched with the transmission rack to form the meshing transmission structure.
5. The underwater transfer system of claim 4 wherein the drive rack is provided on an outer side of the transfer rail.
6. The subsea transfer system of claim 4, characterized in that the maximum length of the slip space is greater than the width of the drive rack.
7. An underwater transfer system as claimed in claim 2, characterized in that the crane is provided with a special spreader comprising a hook (71), a spreader body frame (72), a guiding boom (73),
the shape of the hanger main body frame is matched with the shape of the transfer trolley, and the hanger main body frame is covered on the transfer trolley when the transfer trolley is lifted out;
the hook is arranged at the bottom of the hanger main body frame and used for being connected with the transfer trolley;
the guide lifting beam is arranged at the top of the lifting appliance main body frame, and a lifting rope of the crane is connected to the guide lifting beam.
8. An underwater transfer system as claimed in claim 2, characterized in that the transfer trolley is provided with a monitoring sensor (36),
the monitoring sensor comprises an encoder and a fixed-point induction sensor, the encoder is arranged on the underwater motor, and the fixed-point induction sensor is arranged on the car body and used for real-time positioning and fixed-point stopping of the transfer trolley on the transfer track.
9. An underwater transfer system as claimed in any one of claims 1-8, characterized in that the emergency recovery mechanism comprises a winch (41), a pulley block, a counterweight (44), and a haulage rope (46),
the winch is arranged on the overhaul platform, the pulley block comprises a redirecting pulley and a counterweight pulley (43), one end of the traction rope is fixed on the winch, and the other end of the traction rope is connected with the transfer trolley after passing through the counterweight pulley and the redirecting pulley so as to traction the transfer trolley to the lower part of the overhaul platform;
the counterweight pulley is arranged on the traction rope in a sliding manner, and the counterweight block is arranged on the counterweight pulley, so that the counterweight pulley can drive the counterweight block to move up and down together when the transfer trolley moves on the transfer track.
10. An underwater transfer system as claimed in claim 9 wherein the system further comprises a guide slot (52),
the guide groove is arranged on the path of the up-and-down motion of the counterweight pulley, the counterweight is arranged in the guide groove and can move up and down in the guide groove, and the guide groove is provided with an end limiting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310498659.3A CN116631666A (en) | 2023-05-05 | 2023-05-05 | Underwater transfer system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310498659.3A CN116631666A (en) | 2023-05-05 | 2023-05-05 | Underwater transfer system |
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| CN116631666A true CN116631666A (en) | 2023-08-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114093547A (en) * | 2021-11-18 | 2022-02-25 | 中国核动力研究设计院 | Monocrystalline silicon loading and unloading platform and silicon loading and unloading method |
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2023
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114093547A (en) * | 2021-11-18 | 2022-02-25 | 中国核动力研究设计院 | Monocrystalline silicon loading and unloading platform and silicon loading and unloading method |
| CN114093547B (en) * | 2021-11-18 | 2024-04-30 | 中国核动力研究设计院 | Monocrystalline silicon loading and unloading platform and silicon loading and unloading method |
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