New fuel elevator
Technical field
The utility model relates to nuclear power plant's fuel handling and storage system (PMC) apparatus field, is specifically related to a kind of jacking gear.
Background technology
The main service object of fuel for nuclear power plant operation and storage system (claiming " PMC system " again) is fuel assembly and associated component, its major function is to finish the charging and the discharging operation of reactor, and the safe storage novel fuel assembly is prepared outward transport until it is packed into reactor core and safe storage irradiated fuel assembly until spent fuel transport container that it is packed into.Novel fuel assembly transports nuclear power plant to, after receiving and inspection is qualified, needs by new fuel elevator novel fuel assembly to be reduced to the spentnuclear fuel basin bottom from the underwater, transports in the spent fuel storage rack and stores.
Summary of the invention
The purpose of this utility model is to provide a kind of new fuel elevator of can fuel assembly reducing to the spentnuclear fuel basin bottom from the underwater.
Realize the technical scheme of the utility model purpose: a kind of new fuel elevator, it comprises upper component, is connected with guided way below upper component, is provided with the fuel compartment that can move up and down along guided way between guided way; The fuel compartment bottom is provided with hoisting frame, and hoisting frame is connected with wire rope, the windlass that the driven wire rope that is fixed with in side, upper component top moves up and down.
Aforesaid a kind of new fuel elevator, its described fuel compartment is a basket-hanging, forms square tube shape screen work by 4 angle steel, is provided with coaming plate in the screen work periphery, the fuel compartment top is provided with targeting port; Also be provided with somely to guide roller on the fuel compartment, fuel compartment moves up and down at guided way by guide roller.
Aforesaid a kind of new fuel elevator, the machine work lead frame that its described upper component is made up of channel-section steel, windlass, the upper end of the fixedly connected guided way of front lower ends are installed in the rear portion of framework.
Aforesaid a kind of new fuel elevator, its described guided way is vertical stainless steel structure, by about 2 tracks form, every track is leaned against fixing with the crosspiece welding privately by 2 channel-section steels, the neutral gear between the back-to-back channel-section steel is the action track of fuel compartment.
Aforesaid a kind of new fuel elevator, its described guided way is welded on the foundation plate of pool wall by anchor plate by several bracing frames.
Aforesaid a kind of new fuel elevator, its described fuel compartment bottom is connected with vibroshock, vibroshock comprises cylinder, be provided with the piston of band O-ring seal in the cylinder, stretch out from cylinder the piston lower end, is provided with inner chamber in the piston, inner chamber is provided with spring and is full of water, dog screw passes cylinder wall, is provided with the spacing duct that cooperates with dog screw in the piston outside, above the piston, be provided with two adjustable ozzles that can communicate on the cylinder with piston cavity.
Effect of the present utility model is: new fuel elevator described in the utility model mainly comprises windlass, upper component, fuel compartment and guided way four major parts.Fuel compartment is used to receive novel fuel assembly, and does elevating movement along guided way, finishes the lifting of fuel compartment by electric windlass.The vibroshock (impact damper) that connects in the bottom of fuel compartment can reduce the effect of water to elevating movement.This new fuel elevator can drive the irradiated fuel assembly rising or drop to 3m place under water, and the irradiated fuel assembly that is beneficial to removable head is repaired.
Description of drawings
Fig. 1 is a new fuel elevator structural front view described in the utility model;
Fig. 2 is a new fuel elevator structure side view described in the utility model;
Fig. 3 is a fuel compartment sectional view described in the utility model;
Fig. 4 is a fuel compartment targeting port structural representation described in the utility model;
Fig. 5 is a track syndeton synoptic diagram described in the utility model;
Fig. 6 is a vibroshock structural representation described in the utility model;
Among the figure: 1. upper component; 2. fuel compartment; 3. guide roller; 4. vibroshock; 5. windlass; 6. wire rope; 7. hoisting frame; 8. guided way; 9. bracing frame; 10. anchor plate; 11. coaming plate; 12. angle steel; 13. pool wall; 15. channel-section steel; 16. track; 17. adjustable ozzle; 18. O-ring seal; 19. cylinder body; 20. spring; 21. piston; 22. dog screw; 23. spacing duct; 24. base plate; 25. targeting port.
Embodiment
Below in conjunction with the drawings and specific embodiments a kind of new fuel elevator described in the utility model is described in detail.
As depicted in figs. 1 and 2, new fuel elevator mainly is made up of windlass 5, upper component 1, fuel compartment 2, guided way 8, bracing frame 9, vibroshock 4.
Upper component 1 is a machine work lead frame structure of being made up of channel-section steel, is fixed on the pool wall 13 of fuel pit, and windlass 5, the upper end of the fixedly connected guided way 8 of front lower ends are installed in the rear portion of framework.
Guided way 8 is vertical stainless steel structure, by about 2 tracks 16 form, every track 16 is leaned against fixing with the crosspiece welding privately by 2 channel-section steels 15, the neutral gear between the back-to-back channel-section steel 15 is the action track of fuel compartment 2.Guided way 8 is welded on the foundation plate of pool wall by anchor plate 10 by 6 bracing frames 9.
Fuel compartment 2 is a basket-hanging stainless steel assembly, is used for receiving novel fuel assembly, and does elevating movement along guided way 8.As shown in Figure 3 and Figure 4, fuel compartment 2 is formed square tube shape screen work by 4 angle steel 12, is provided with coaming plate 11 in the screen work periphery, and fuel compartment 2 tops are provided with targeting port 25.Also be provided with 12 (six pairs) guide rollers 3 on the fuel compartment 2, fuel compartment 2 moves up and down at guided way 8 by guide roller 3.Hoisting frame 7 is connected with wire rope 6, is fixed with windlass 5 in side, upper component 1 top, drives wire rope 6 by windlass 5 and moves up and down, and moves up and down thereby drive fuel compartment 2.
Fuel compartment 2 bottoms are provided with hoisting frame 7, are connected with 2 wire rope 6.The lifting of fuel compartment 2 is finished by electric windlass 5.As the consideration of security, just in case wherein steel cable fracture, then still can finish ongoing operation by another root wire rope.
As shown in Figure 6, in the bottom of fuel compartment 2, the base plate 24 by a bolt band vibroshock 4 of connection (impact damper) is drilled with osculum on the base plate 24, to reduce the effect of water to elevating movement.Vibroshock 4 comprises cylinder 19, be provided with the piston 21 of band O-ring seal 18 in the cylinder 19, stretch out from cylinder 19 piston 21 lower ends, be provided with inner chamber in the piston 19, inner chamber is provided with and reverses element spring 20 and be full of water, dog screw 22 passes cylinder wall, is provided with the spacing duct 23 that cooperates with dog screw 22 in piston 21 outsides, above the piston 21, be provided with two adjustable ozzles 17 that can communicate on the cylinder 19 with piston cavity.Vibroshock 4 is used under the situation that descending operation lost efficacy, and fuel compartment 2 falls to the terminal of stroke, buffering fuel compartment 2, protection fuel assembly.
12 guide rollers are arranged on the fuel compartment.Guided way is welded on by anchor plate on the foundation plate of pool wall by 6 bracing frames, and the upper end of guided way 8 is fixed on the upper component 1.
Windlass 5 is positioned at upper component 1 rear portion, is the main electromotor structure.Windlass 5 is provided with the dual brake protection; promptly move detent and deadman's brake; under normal circumstances; the operation detent is braked immediately; and maintenance load; but when safe altitude limit switch, hypervelocity, overload, mistake are carried, during the outage of the loose switch motion of wire rope or accident, deadman's brake should be able to directly be checked reel.
When new fuel elevator described in the utility model is worked, when fuel compartment is in a high position, with whipline and novel fuel assembly gripping apparatus novel fuel assembly (being with or not being with the control rod assembly) is inserted fuel compartment, then fuel compartment is reduced at the bottom of the pond in irradiated fuel store pond, by spentnuclear fuel pond crane and irradiated fuel assembly gripping apparatus novel fuel assembly is taken out in fuel compartment, and be transported in other fuel handling or the bunkerage.