CN108766606B - Burnable poison assembly and neutron source assembly switching tool for nuclear power plant - Google Patents
Burnable poison assembly and neutron source assembly switching tool for nuclear power plant Download PDFInfo
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- CN108766606B CN108766606B CN201810554497.XA CN201810554497A CN108766606B CN 108766606 B CN108766606 B CN 108766606B CN 201810554497 A CN201810554497 A CN 201810554497A CN 108766606 B CN108766606 B CN 108766606B
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- 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
- G21C19/20—Arrangements for introducing objects into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention provides a nuclear power plant burnable poison assembly and neutron source assembly switching tool, which comprises: a support frame body; the lifting structure is arranged at the top of the support frame body; the grabbing head structure is arranged in the support frame body, the bottom of the grabbing head structure is suitable for being connected with a piece to be replaced, the top of the grabbing head structure is connected with the lifting structure, and the lifting structure drives the grabbing head structure to do lifting motion; and the position detection component is arranged on the lifting structure and is used for acquiring the position of the piece to be exchanged according to the movement distance of the lifting structure. Through the cooperation among the elevation structure, the gripper head structure and the position detection component, the reliable switching of the member to be switched such as a burnable poison assembly and a neutron source assembly is realized, the position of the member to be switched is monitored in real time, the movement stroke of the member to be switched is ensured to be accurate and reliable, the switching of the burnable poison and the neutron source assembly is realized, and the requirements of related assembly operation in nuclear power daily and overhaul work are met.
Description
Technical Field
The invention relates to the technical field of maintenance equipment, in particular to a nuclear power plant burnable poison assembly and neutron source assembly reversing tool.
Background
After the first circulation of the partial reactor type of the nuclear power plant is finished, 66 groups of burnable poisons and 2 groups of primary neutron source assemblies are not used in the reactor and need to be shifted; the secondary neutron source component needs to be displaced after overhaul and before loading, so that the requirement that the position of the secondary neutron source component in the reactor core is unchanged is met. Therefore, the research, development and application of the burnable poison and neutron source component switching tool play an important role in the smooth implementation of daily and overhaul work of a nuclear power plant.
At present, the burnable poison and neutron source component switching tool cannot reliably realize the switching of the burnable poison and neutron source component, has potential safety hazards, and cannot meet the requirement of more operation of related components in domestic nuclear power daily and overhaul work.
Disclosure of Invention
Therefore, it is necessary to provide a nuclear power plant burnable poison assembly and neutron source assembly switching tool for realizing reliable switching of burnable poison assemblies and neutron source assemblies, aiming at the problem that the conventional burnable poison and neutron source assembly switching tool cannot reliably switch burnable poison and neutron source assemblies.
The above purpose is realized by the following technical scheme:
a burnable poison assembly and neutron source assembly switching tool for a nuclear power plant comprises:
a support frame body;
the lifting structure is arranged at the top of the support frame body;
the grabbing head structure is arranged in the support frame body, the bottom of the grabbing head structure is suitable for being connected with a piece to be replaced, the top of the grabbing head structure is connected with the lifting structure, and the lifting structure drives the grabbing head structure to do lifting motion; and
and the position detection component is arranged on the lifting structure and is used for acquiring the position of the piece to be exchanged according to the movement distance of the lifting structure.
In one embodiment, the gripper structure comprises a mandrel, a gripper outer cylinder and a gripper inner cylinder, the gripper outer cylinder is sleeved outside the gripper inner cylinder and is fixedly connected with the bottom of the mandrel, and the bottom of the gripper inner cylinder and the bottom of the gripper outer cylinder are both provided with a gripper hook, and the gripper hook is used for hooking the to-be-switched member.
In one embodiment, the lifting structure comprises a driving motor, a reduction gearbox, a winding drum and a steel wire rope wound on the winding drum, wherein the output end of the driving motor drives the winding drum to rotate through the reduction gearbox, so that the winding drum releases or winds the steel wire rope;
the tail end of the steel wire rope is connected to the top of the mandrel.
In one embodiment, the tool for switching the burnable poison assembly and the neutron source assembly of the nuclear power plant further comprises a locking structure, the locking structure is arranged in the support frame body and connected with the gripper head structure, and the locking structure is used for locking or unlocking the member to be switched at the bottom of the gripper head structure.
In one embodiment, the locking structure comprises a driving handle, a driving rod, a driving shifting fork and a driving shifting pin, wherein the driving handle and the driving rod are both arranged in the support frame body, and the driving rod is connected with the driving handle and the driving shifting fork;
the driving shifting fork is rotationally arranged on the supporting frame body, the driving shifting pin is arranged at the top of the mandrel and abutted against the driving shifting pin, and the driving shifting fork can drive the driving shifting pin to rotate and drive the mandrel to rotate.
In one embodiment, the tool for switching the burnable poison assembly and the neutron source assembly in the nuclear power plant further comprises a guide structure, the guide structure is arranged in the support frame body and sleeved outside the mandrel, and the guide structure is used for guiding the lifting motion of the member to be switched.
In one embodiment, the guide structure comprises a motion assembly, a transmission assembly and a guide assembly, the motion assembly is sleeved outside the mandrel, and the transmission assembly is in transmission connection with the guide assembly;
the lifting motion of the mandrel can drive the motion assembly to synchronously ascend or descend, and the transmission assembly drives the guide assembly to open the channel of the support frame body or guide the to-be-switched piece.
In one embodiment, the transmission assembly comprises a supporting disc, a slotted plate and two groups of guide wheels, the supporting disc is sleeved on the mandrel, the guide wheels are symmetrically and rollably arranged on the supporting disc, the guide wheels roll along the supporting frame body, an inclined sliding groove is formed in the slotted plate along the height direction, and when the mandrel drives the slotted plate to move up and down through the supporting disc, the end part of the transmission assembly can slide into or slide out of the sliding groove;
when the end part of the transmission assembly slides into the sliding groove, the transmission assembly drives the guide assembly to guide the to-be-reversed piece.
In one embodiment, the transmission assembly includes a main pin, a rotating arm and an adjusting link, the main pin is rotatably connected to the rotating arm and the adjusting link, the other end of the rotating arm is rotatably mounted on the support frame, and the other end of the adjusting link is connected to the guiding assembly.
In one embodiment, the guide assembly comprises a guide shaft and a guide target, the guide shaft is in transmission connection with the guide target and the adjusting connecting rod, and the adjusting connecting rod drives the guide target to rotate through the guide shaft so as to open or close a channel inside the support frame body;
the guide target is provided with a plurality of guide grooves which are arranged in parallel and communicated with each other, and the guide grooves are used for allowing the pieces to be switched to pass through and guiding the pieces to be switched.
In one embodiment, the number of the slotted plates, the transmission assemblies and the guide assemblies is four, and the four slotted plates are symmetrically distributed on the peripheral sides of the supporting plates and are connected with the corresponding guide assemblies through the corresponding transmission assemblies;
the four guide targets are arranged in two layers, and the two layers of guide targets are staggered by 90 degrees, so that the guide grooves of the two layers of guide targets are partially overlapped and are used for accommodating the pieces to be rearranged.
In one embodiment, the tool for switching the burnable poison assembly and the neutron source assembly of the nuclear power plant further comprises an emergency structure, wherein the emergency structure is arranged in the support frame body and can be connected with the guide structure, so as to limit the position of the guide structure when the member to be switched is not guided.
In one embodiment, the emergency structure comprises an emergency handle, an emergency rope, a safety handle and a safety clamping plate, the safety clamping plate is rotatably arranged on the safety handle, the safety handle is arranged in the support frame body, the emergency rope is connected with one end of the safety clamping plate and the emergency handle, and the other end of the safety clamping plate can hook the main pin.
In one embodiment, the support frame comprises an upper hanger and a lower hanger, and the upper hanger is positioned above the lower hanger and detachably connected with the lower hanger.
In one embodiment, a guide positioning pin is disposed at the bottom of the support frame body, and is used for positioning the to-be-switched member.
In one embodiment, the tool for switching the burnable poison assembly and the neutron source assembly in the nuclear power plant further comprises a tension detection component, and the tension detection component is arranged on the steel wire rope and is used for detecting the weight of the member to be switched.
In one embodiment, the tool for switching the burnable poison assembly and the neutron source assembly of the nuclear power plant further comprises a tension digital display screen and a position digital display screen, wherein the tension digital display screen is electrically connected with the tension detection component and is used for displaying the weight of the member to be switched; and the position digital display screen is electrically connected with the position detection part and is used for displaying the height of the to-be-switched piece.
In one embodiment, the nuclear power plant burnable poison assembly and neutron source assembly switching tool further comprises a manual control box, and the manual control box is used for adjusting the working mode and the operating speed of the nuclear power plant burnable poison assembly and neutron source assembly switching tool.
After the technical scheme is adopted, the invention has the beneficial effects that:
according to the tool for switching the burnable poison assembly and the neutron source assembly of the nuclear power plant, when the burnable poison assembly and the neutron source assembly are taken out, the lifting structure drives the gripper head structure to descend, after the gripper head structure descends to a preset position, the bottom of the gripper head structure is connected with a member to be switched, the member to be switched is locked at the bottom of the gripper head structure through the locking structure, then the lifting structure drives the gripper head structure to ascend, the member to be switched is guided through the guiding structure, and the member to be switched is conveyed to an appointed position; when the gripper is inserted, the bottom of the gripper structure is connected with a to-be-reversed piece, the lifting structure drives the gripper structure to descend, the to-be-reversed piece is guided through the guide structure, when the gripper structure descends to a preset position, the to-be-reversed piece is unlocked from the gripper structure through the locking structure, and the to-be-reversed piece is released from the bottom of the gripper structure; the problem that the burnable poison assembly and neutron source assembly cannot be reliably switched by the conventional switching tool for the burnable poison assembly and the neutron source assembly of the nuclear power plant is effectively solved; through the cooperation among the lifting structure, the grabbing head structure, the locking structure and the guide structure, the safety of the members to be switched, such as burnable poison assemblies, and neutron source assemblies in the switching process is ensured, the safety performance in the switching process is improved, the reliable switching of the members to be switched is realized, and the requirements of related assembly operation in nuclear power daily and overhaul work are met.
Drawings
Fig. 1 is a perspective view of a nuclear power plant burnable poison assembly and neutron source assembly reversing tool according to an embodiment of the present invention;
FIG. 2 is a partial schematic view of the upper portion of the nuclear plant burnable poison assembly and neutron source assembly rearrangement tool shown in FIG. 1;
FIG. 3 is a top view of the upper portion of the nuclear plant burnable poison assembly and neutron source assembly rearrangement tool shown in FIG. 2;
FIG. 4 is a partial schematic view of a lower portion of the nuclear plant burnable poison assembly and neutron source assembly rearrangement tool shown in FIG. 1;
FIG. 5 is a top cross-sectional view of the connection between the locking structure and the gripper head structure in the nuclear power plant burnable poison assembly and neutron source assembly reversing tool shown in FIG. 1;
FIG. 6 is a top cross-sectional view of the moving assembly of the guide structure in the lower portion of the tool for inverting burnable poison assemblies with neutron source assemblies shown in FIG. 4;
FIG. 7 is a top view of a guiding target in the lower part of the tool for inverting burnable poison assemblies and neutron source assemblies of the nuclear power plant shown in FIG. 4;
wherein:
100-nuclear power plant burnable poison assembly and neutron source assembly switching tool;
110-a support frame body;
111-upper hanger;
112-lower hanger; 1121-guide positioning pin;
120-a gripper head configuration;
121-a mandrel;
122-outer barrel of gripper head;
123-a gripper head inner cylinder;
124-mandrel outer cylinder;
130-a lifting structure;
131-a drive motor;
132-a reduction gearbox;
133-a spool;
134-steel wire rope;
140-a locking structure;
141-a drive handle;
142-a drive rod;
143-driving a fork;
144-a drive toggle;
150-a guide structure;
151-support tray;
152-a guide wheel;
153-channel plate; 1531-a chute;
154-kingpin;
155-rotating arm;
156-adjusting link;
157-a guide shaft;
158-a guide target;
160-emergency configuration;
161-emergency handle;
162-emergency rope;
163-security card;
164-a safety handle;
170-position detection means;
180-tension detecting means.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the nuclear power plant burnable poison assembly and neutron source assembly reversing tool of the present invention is further described in detail by embodiments and with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 2 and fig. 4, the invention provides a nuclear power plant burnable poison assembly and neutron source assembly switching tool 100, where the nuclear power plant burnable poison assembly and neutron source assembly switching tool 100 is used to switch a member to be switched in a nuclear power plant, such as a burnable poison assembly and a neutron source assembly. Of course, in other embodiments of the present invention, the burnable poison assembly and neutron source assembly inverting tool 100 may invert other structures. The shift switching operation of the burnable poison assembly and the neutron source assembly belongs to high-risk work, and has very high requirements on equipment, personnel, operation processes and technical key points, so that all the switching operations of the burnable poison assembly and the neutron source assembly are required to be completed underwater, the radiation risk exists, the requirement on the switching tool 100 of the burnable poison assembly and the neutron source assembly of the nuclear power plant is high, and accurate positioning of a to-be-switched piece is ensured. By adopting the nuclear power plant burnable poison assembly and neutron source assembly switching tool 100, switching of the to-be-switched pieces such as the burnable poison assembly and the neutron source assembly can be ensured to be reliable, so that the safety of the to-be-switched pieces such as the burnable poison assembly and the neutron source assembly in the switching process is ensured, the safety performance in the switching process is improved, and the requirements of operation of related assemblies in nuclear power daily and overhaul work are met.
The nuclear power plant burnable poison assembly and neutron source assembly switching tool 100 is used for a special refueling gripping apparatus for a spent fuel pool, is used for operating the burnable poison assembly during first refueling and gripping a secondary neutron source assembly during other refueling, the gripping, releasing and lifting processes of the assemblies are all carried out under boric acid water, and the burnable poison assembly and neutron source assembly switching tool 100 of the nuclear power plant needs to be matched with a spent fuel bridge crane to work when in use and is hung on a storage support on the pool wall of the spent fuel pool after being used. When the nuclear power plant burnable poison assembly and neutron source assembly reversing tool 100 operates, the burnable poison assembly is extracted from the fuel assembly and then inserted into a burnable poison assembly storage rack; drawing out the burnable poison assembly from the burnable poison storage rack, and then inserting the burnable poison assembly into the spent fuel assembly; and in the process of switching the related assemblies for material change major repair, switching the neutron source assemblies.
In the present invention, the burnable poison assembly and neutron source assembly inverting tool 100 of the nuclear power plant includes a support frame 110, a lifting structure 130, and a gripper head structure 120. The lifting structure 130 is disposed on the top of the support frame 110. The gripper structure 120 is disposed in the support frame 110, the bottom of the gripper structure 120 is suitable for connecting a to-be-exchanged member, the top of the gripper structure 120 is connected with the lifting structure 130, and the lifting structure 130 drives the gripper structure 120 to perform lifting movement. The support frame body 110 plays a supporting role, and each part of the nuclear power plant burnable poison assembly and neutron source assembly switching tool 100 is arranged on the support frame body 110. The lifting structure 130 is used for driving the gripper head structure 120 to perform lifting movement, and the gripper head structure 120 is used for driving the to-be-switched member to move, so that the to-be-switched member moves the fuel assembly and is drawn out or inserted into the fuel assembly, thereby realizing switching of the to-be-switched member.
When the member to be changed is drawn out of the fuel assembly, the lifting structure 130 drives the gripper head structure 120 to move downwards, so that the bottom of the gripper head structure 120 is connected with the member to be changed; after the connection is completed, the lifting structure 130 drives the gripper head structure 120 to move upwards, the piece to be replaced is drawn out of the fuel assembly, and the piece to be replaced is placed in a burnable poison assembly storage rack or other fuel assemblies; when the member to be replaced is inserted into the fuel assembly, the bottom of the gripper structure 120 is connected to the member to be replaced, and the lifting structure 130 drives the gripper structure 120 to move downwards to insert the member to be replaced into the fuel assembly; after the completion, the lifting structure 130 drives the gripper head structure 120 to move upwards for resetting. It should be noted that the member to be replaced refers to a burnable poison assembly or a neutron source assembly, and in this embodiment, only the member to be replaced is described instead.
Illustratively, the support frame 110 includes an upper hanger 111 and a lower hanger 112, and the upper hanger 111 is disposed above the lower hanger 112 and detachably connected to the lower hanger 112. It can be understood that, the nuclear power plant is used for switching the burnable poison assembly and the neutron source assembly, and the burnable poison assembly and the neutron source assembly switching tool 100 of the nuclear power plant has a larger size, and the support frame body 110 is divided into two parts which are connected together when in use, and the burnable poison assembly and the neutron source assembly switching tool can be separately stored after being used, and can be conveniently stored. It will be appreciated that the bottom of upper hanger 111 and the top of lower hanger 112 are provided with attachment flanges. When the burnable poison assembly and neutron source assembly switching tool 100 of the nuclear power plant is used, the upper hanger 111 and the lower hanger 112 are assembled firstly, the spent fuel bridge is used for hanging the upper hanger 111 to the lower hanger 112 at a proper height, so that the flanges of the upper hanger 111 and the lower hanger 112 correspond to each other, and the burnable poison assembly and the neutron source assembly switching tool 100 of the nuclear power plant are assembled through reliable fixed connection of threaded connectors. After use, the threaded connection is removed to separate the upper hanger 111 from the lower hanger 112. It should be noted that the upper hanger 111 and the lower hanger 112 are both frame structures, which are used for supporting while facilitating the operation.
Moreover, the bottom of the support frame 110 is provided with a guiding positioning pin 1121 for positioning the to-be-switched member. Specifically, the bottom of the lower hanger 112 has a guiding positioning pin 1121, and the guiding positioning pin 1121 is rigidly positioned with the upper seat of the fuel assembly, so that the position between the lower hanger 112 and the member to be rearranged is relatively fixed. When the device is used, the burnable poison assembly and neutron source assembly switching tool 100 of the nuclear power plant is hoisted by the spent fuel bridge crane and moved to the position above the fuel assembly, then the burnable poison assembly and neutron source assembly switching tool 100 of the nuclear power plant and the upper pipe seat of the fuel assembly are rigidly positioned by the guide positioning pins 1121, after the burnable poison assembly and neutron source assembly switching tool 100 of the nuclear power plant and the fuel assembly are positioned, the burnable poison assembly and neutron source assembly switching tool 100 of the nuclear power plant and the fuel assembly are extracted/inserted, and after the extraction/insertion operation is finished, the burnable poison assembly and neutron source assembly switching tool 100 of the nuclear power plant and.
Referring to fig. 1 and 4, further, the gripper structure 120 includes a mandrel 121, a gripper outer cylinder 122 and a gripper inner cylinder 123, the gripper outer cylinder 122 is sleeved outside the gripper inner cylinder 123 and is fixedly connected to the bottom of the mandrel 121, and the gripper inner cylinder 123 and the gripper outer cylinder 122 have a gripper at their bottoms, and the gripper is used for hooking the to-be-switched member. Correspondingly, the top of the to-be-switched member is provided with a hook hanging part, and the inner gripper cylinder 123 hooks the hook hanging part with the gripper hook at the bottom of the outer gripper cylinder 122, so as to connect the to-be-switched member with the gripper structure 120, and further drive the gripper structure 120 to move through the lifting structure 130, so as to draw out or insert the to-be-switched member. It can be understood that the bottom of the spindle 121 is connected to the top of the inner cylinder 123 and the top of the outer cylinder 122 through a connecting plate and a threaded connection, and the top of the inner cylinder 123 and the top of the outer cylinder 122 can also be connected and fixed through a threaded connection. Illustratively, the top of the inner gripper head cylinder 123 and the top of the outer gripper head cylinder 122 are fixed by means of a stud bolt and a nut.
Moreover, the head grabbing structure 120 further includes a mandrel outer cylinder 124, the mandrel outer cylinder 124 is sleeved on the outer side of the mandrel 121, the mandrel 121 can rotate relative to the mandrel outer cylinder 124, and the lifting structure 130 drives the mandrel 121 to ascend and can synchronously drive the mandrel outer cylinder 124 to rotate. The mandrel outer cylinder 124 can facilitate installation of other structures, avoid interference between rotation of the mandrel 121 and other structures, and guarantee stable and reliable movement.
Referring to fig. 1 to 3, still further, the lifting structure 130 includes a driving motor 131, a reduction gearbox 132, a winding drum 133 and a steel wire 134 wound on the winding drum 133, and an output end of the driving motor 131 drives the winding drum 133 to rotate through the reduction gearbox 132, so that the winding drum 133 releases or winds the steel wire 134. The end of the cable 134 is attached to the top of the mandrel 121. The gripper head structure 120 adopts the driving motor 131 as a power source, the driving motor 131 drives the drum to drive the drum 133 to wind or release the steel wire rope 134, and when the drum 133 winds the steel wire rope 134, the steel wire rope 134 can drive the gripper head structure 120 to ascend; when the reel 133 releases the wire rope 134, the wire rope 134 drives the gripper head structure 120 to descend; the extraction and insertion operation of the pieces to be switched is realized. The reduction box 132 is in transmission connection with the output end of the driving motor 131 and the winding drum 133, and is used for reducing the rotating speed output by the driving motor 131, further reducing the rotating speed of the winding drum 133, and controlling the lifting speed of the gripper head structure 120. It can be understood that when the switching is performed on the to-be-switched component, such as the neutron source component, the speed control is required to be accurate, the whole process is guaranteed to be slow (the lifting speed range of the head grasping structure 120 is 0.2m/Min to 0.7m/Min, preferably, the speed is 0.5m/Min), the speed is balanced, the switching requirement is met, and meanwhile, the requirement of the inspection equipment is also met, and the switching reliability is guaranteed. Moreover, the position detecting component 170 is located at the end of the winding drum 133, and the rotation of the winding drum 133 realizes the acquisition of the position information of the movement stroke of the steel wire rope 134, so as to realize the detection of the position of the to-be-reversed piece.
Referring to fig. 4 and 5, as an implementation manner, the nuclear plant burnable poison assembly and neutron source assembly reversing tool 100 further includes a locking structure 140, the locking structure 140 is disposed in the support frame 110, the locking structure 140 is connected to the gripper structure 120, and the locking structure 140 is used for locking or unlocking the member to be reversed at the bottom of the gripper structure 120. The locking structure 140 is used to lock the to-be-switched member to the bottom of the gripper structure 120, or to disengage the to-be-switched member from the bottom of the gripper structure 120, so as to ensure that the gripper structure 120 can reliably drive the to-be-switched member to be pulled out or inserted. It can be understood that the locking structure 140 realizes the locking and unlocking of the gripper structure 120 and the to-be-switched member by the cooperation of the gripper inner cylinder 123 of the gripper structure 120, the gripper hook at the bottom of the gripper outer cylinder 122 and the hook hanging part at the top of the to-be-switched member. Specifically, when the to-be-switched member is pulled out, the lifting structure 130 drives the gripper structure 120 to descend to a specified height, the locking structure 140 drives the gripper inner cylinder 123 and the gripper outer cylinder 122 which drive the gripper structure 120 through the mandrel 121 to move, so that the gripper hooks at the bottoms of the gripper inner cylinder 123 and the gripper outer cylinder 122 move to the lower side of the hooking part of the to-be-switched member, and then the lifting structure 130 drives the gripper structure 120 to ascend, so that the gripper hooks hook on the hooking part, and the lifting structure 130 drives the gripper structure 120 to continuously ascend so as to drive the to-be-switched member to pull out the fuel assembly. When the to-be-switched member is inserted, the lifting structure 130 drives the gripper structure 120 to descend, and further drives the to-be-switched member to be inserted into the fuel assembly, after the gripper structure 120 descends to a specified height, the locking structure 140 drives the gripper inner cylinder 123 and the gripper outer cylinder 122 which drive the gripper structure 120 through the mandrel 121 to move, so that the gripper hooks at the bottoms of the gripper inner cylinder 123 and the gripper outer cylinder 122 move away from the position below the hook hanging part of the to-be-switched member, and then the lifting structure 130 drives the gripper structure 120 to ascend, so that the gripper hooks can be separated from the hook hanging part, and the to-be-switched member is inserted into the fuel assembly.
Further, the locking structure 140 includes a driving handle 141, a driving rod 142, a driving fork 143, and a driving pin 144, wherein the driving handle 141 and the driving rod 142 are disposed in the support frame 110, and the driving rod 142 connects the driving handle 141 and the driving fork 143. The driving fork 143 is rotatably disposed on the support frame 110, the driving pin 144 is disposed on the top of the mandrel 121, the driving fork 143 abuts against the driving pin 144, and the driving fork 143 can drive the driving pin 144 to rotate and drive the mandrel 121 to rotate. It can be understood that the locking structure 140 drives the spindle 121 to rotate, so that the gripper inner cylinder 123 and the gripper hook at the bottom of the gripper outer cylinder 122 rotate to a position below the hook at the top of the to-be-switched member or rotate to a position away from the position below the hook at the top of the to-be-switched member, thereby locking and unlocking the gripper structure 120 and the to-be-switched member. Specifically, after the lifting structure 130 drives the gripper head structure 120 to descend to a specified height, the operator moves the driving handle 141, the driving handle 141 drives the driving rod 142 to move, and the driving rod 142 drives the driving fork 143 to move, so that the end of the driving fork 143 can shift the driving pin 144, the driving pin 144 can drive the mandrel 121 to rotate and drive the gripper head inner cylinder 123 and the gripper head outer cylinder 122 to rotate, so that the gripper head inner cylinder 123 and the gripper head outer cylinder 122 at the bottom of the gripper head inner cylinder 123 rotate to the position below the hook portion at the top of the to-be-switched member or rotate to the position below the hook portion far away from the top of the to-be-switched member, thereby locking and unlocking the gripper head structure 120 and the to-be-switched member, and further extracting and inserting the to-be-switched member.
Referring to fig. 3, fig. 6 and fig. 7, as an implementation manner, the nuclear power plant burnable poison assembly and neutron source assembly reversing tool 100 further includes a guide structure 150, the guide structure 150 is disposed in the support frame 110 and sleeved outside the mandrel 121, and the guide structure 150 is used for guiding the lifting movement of the member to be reversed. The guiding structure 150 is used to guide the to-be-switched member, so as to avoid potential safety hazard caused by collision damage of the to-be-switched member. When the to-be-switched member is pulled out, the hook at the bottom of the gripper structure 120 hooks the hook hanging part at the top of the to-be-switched member, the lifting structure 130 drives the gripper structure 120 to ascend and drives the to-be-switched member to ascend, and after the to-be-switched member gradually enters the lower hanging bracket 112, the guide structure 150 guides the to-be-switched member, so that the to-be-switched member ascends stably. When the to-be-reversed piece is inserted, the lifting structure 130 drives the gripper head structure 120 to descend and drives the to-be-reversed piece to descend, and after the to-be-reversed piece gradually enters the lower hanging bracket 112, the guide structure 150 guides the to-be-reversed piece, so that the to-be-reversed piece descends stably; when the member to be replaced gradually extends into the fuel assembly, the guiding structure 150 no longer guides the member to be replaced.
Specifically, the guiding structure 150 includes a moving component, a transmission component and a guiding component, the moving component is sleeved on the outer side of the core shaft 121, and the transmission component is in transmission connection with the guiding component. The lifting motion of the mandrel 121 can drive the motion assembly to synchronously ascend or descend, and the transmission assembly drives the guide assembly to open the channel of the support frame body 110 or guide the to-be-exchanged piece. When the member to be switched rises or falls to a certain distance, the moving component drives the transmission component to drive the guide component to perform guide operation. Specifically, after the lifting structure 130 drives the gripper head structure 120 to descend, the mandrel 121 can drive the moving assembly to descend, so that the moving assembly can contact with the transmission assembly after descending, and the transmission assembly drives the guide assembly to move, so that the guide assembly guides the descending of the to-be-reversed piece; after the head structure 120 continues to descend, when the head outer cylinder 122 moves to a position below the middle region of the lower hanger 112, the moving component will be separated from the transmission component, and at this time, the transmission component drives the guide component to reset, so that the guide component opens the channel of the lower hanger 112, and the bottom of the head outer cylinder 122 and the head inner cylinder 123 is convenient to contact with the member to be switched, or the head outer cylinder 122 and the head inner cylinder 123 are convenient to insert the member to be switched into the fuel component. When the lifting structure 130 drives the gripper head structure 120 to ascend, the mandrel 121 can drive the moving assembly to ascend, and then the moving assembly can contact with the transmission assembly after ascending, and drives the guide assembly to move through the transmission assembly, so that the guide assembly guides the ascending of the to-be-reversed piece; after the gripper head structure 120 continues to rise, the moving assembly disengages from the transmission assembly, and the transmission assembly drives the guiding assembly to reset at this time, so that the guiding assembly opens the passage of the lower hanger frame 112.
Further, the transmission assembly includes a supporting disc 151, a groove plate 153 and two sets of guide wheels 152, the supporting disc 151 is sleeved on the mandrel 121, the guide wheels 152 are symmetrically and rollably disposed on the supporting disc 151, the guide wheels roll along the supporting frame body 110, an inclined chute 1531 is disposed on the groove plate 153 along the height direction, and when the mandrel 121 drives the groove plate 153 to move up and down through the supporting disc 151, the end of the transmission assembly can slide into or out of the chute 1531. When the end of the transmission assembly slides into the sliding groove 1531, the transmission assembly drives the guide assembly to guide the to-be-reversed part. Supporting disk 151 is located on the dabber urceolus 124 of dabber 121, and when elevation structure 130 drove dabber 121 and goes up and down, drive supporting disk 151 through dabber urceolus 124 and together do elevating movement, set up simultaneously that leading wheel 152 group on supporting disk 151 can be along the edge of the frame construction of lower hanger 112 is elevating movement, can lead to the motion of supporting disk 151 like this, and then make the elevating movement of dabber 121 steady. The slot board 153 is used to cooperate with the transmission assembly, when the end of the transmission assembly slides into the sliding slot 1531, the inclined sliding slot 1531 applies an acting force, such as friction, pressure, etc., to the end of the transmission assembly, and the acting force can drive the transmission assembly to move, so that the transmission assembly drives the guiding assembly to close the channel of the lower hanger 112, so as to guide the member to be replaced.
Still further, the transmission assembly includes a main pin 154, a rotating arm 155 and an adjusting link 156, the main pin 154 rotatably connects the rotating arm 155 and the adjusting link 156, the other end of the rotating arm 155 is rotatably mounted on the support frame 110, and the other end of the adjusting link 156 is connected to the guide assembly. The main pin 154 is a main element that is engaged with the sliding slot 1531 of the slot plate 153, when the end of the main pin 154 slides into the sliding slot 1531, the inclined sliding slot 1531 applies an acting force to the main pin 154, so that the main pin 154 rotates via the rotating arm 155, and at the same time, the main pin 154 further drives the adjusting link 156 to move, and the adjusting link 156 drives the guiding component to move, so that the guiding component performs a guiding operation; when the main pin 154 is separated from the sliding slot 1531, the rotating arm 155 drives the main pin 154 to reset, and simultaneously drives the adjusting link 156 to reset, so that the guiding component no longer plays a guiding role.
Further, the guiding assembly includes a guiding shaft 157 and a guiding target 158, the guiding shaft 157 is drivingly connected to the guiding target 158 and the adjusting link 156, and the adjusting link 156 drives the guiding target 158 to rotate through the guiding shaft 157 to open or close the passage inside the support frame 110. The guiding target 158 is provided with a plurality of guiding grooves, and the plurality of guiding grooves are arranged in parallel and are communicated with each other, and the guiding grooves are used for allowing the members to be switched to pass through and guiding the members to be switched. The guiding target 158 guides the to-be-switched member through the guiding groove, so as to prevent the to-be-switched member from collision damage. The adjusting link 156 can move to drive the guide shaft 157, so that the guide shaft 157 drives the guide target 158 to turn over to open or close the passage of the lower hanger 112.
In this embodiment, the number of the slot plates 153, the transmission assemblies and the guide assemblies is four, and the four slot plates 153 are symmetrically distributed on the peripheral side of the support plate and connected with the corresponding guide assemblies through the corresponding transmission assemblies. The four guiding targets 158 are arranged in two layers, and the two layers of guiding targets 158 are staggered by 90 degrees, so that the guiding grooves of the two layers of guiding targets 158 are partially overlapped and used for accommodating the pieces to be rearranged. It can be understood that the member to be replaced, such as burnable poison assembly or neutron source assembly, comprises a plurality of rod bundle assemblies with a length of about 4 meters, and the diameter of the rod bundle is about 10mm, so that the rod bundle must be guided in the lifting process, and the potential safety hazard caused by collision damage of the rod bundle is avoided. The nuclear power plant burnable poison assembly and neutron source assembly reversing tool 100 guides the extraction and insertion of the to-be-reversed piece through the guide structure 150, when the to-be-reversed piece is extracted and lifted, the lifting structure 130 drives the support disc 151 to ascend through the gripper head structure 120, so that the slot plate 153 drives the main pin 154 and the rotating arm 155 to move along the upper chute 1531 thereof, the main pin 154 drives the guide shaft 157 and the guide targets 158 to turn through the adjusting connecting rod 156, and the overlapping guide function of the four groups of guide targets 158 is completed; when the member to be reversed descends, the opposite main pin 154 pushes the adjusting link 156 to move downward integrally along the groove track of the slot plate 153, so as to realize the outward turning of the guiding target 158.
The nuclear power plant burnable poison assembly and neutron source assembly switching tool 100 adopts the cooperation of the lifting structure 130, the grabbing head structure 120, the locking structure 140 and the guiding structure 150, ensures the safety of a member to be switched, such as a burnable poison assembly, and a neutron source assembly in the switching process, realizes the reliable switching of the member to be switched, and meets the requirements of related assembly operation in nuclear power daily and overhaul work.
Referring to fig. 1, 2 and 4, as an implementation manner, the tool 100 for rearranging burnable poison assemblies and neutron source assemblies of a nuclear power plant further includes an emergency structure 160, and the emergency structure 160 is disposed in the support frame 110 and can be connected to the guide structure 150, so as to limit a position of the guide structure 150 when the member to be rearranged is not guided. The emergency structure 160 prevents the guide assembly from being guided accidentally, i.e. prevents the guide target 158 from being opened accidentally, so as to prevent the guide target 158 from interfering with the gripper head structure 120, and ensure smooth operation.
Specifically, emergent structure 160 includes emergent handle 161, emergent rope 162, safety handle 164 and safety cardboard 163, and safety cardboard 163 rotationally sets up on safety handle 164, and safety handle 164 sets up in supporting frame body 110, and emergent rope 162 connects one end and emergent handle 161 of safety cardboard 163, and the other end of safety cardboard 163 can be caught on king pin 154. When the emergency handle 161 is in a locking state, the safety catch plate 163 on the safety handle 164 is compressed in association with the main pin 154, so that the main pin 154 is automatically locked, and the situation that the main pin 154 drives the adjusting connecting rod 156 to move so as to turn over the guide target 158 for guiding operation is avoided; when the guide target 158 needs to be unlocked, the emergency pull 161 is pulled by pulling the emergency rope 162, and the emergency rope 162 drives the safety catch plate 163 to swing relative to the safety handle 164, so that the safety catch plate 163 is separated from the main pin 154, and at this time, the guide structure 150 moves to enable the guide target 158 to turn inwards to close the channel of the lower hanger 112, so as to realize the guide operation of the guide target 158. It will be appreciated that the cooperation of the kinematic assembly with the transmission assembly also does not enable the guiding operation of the guide target 158 when the emergency structure 160 locks the master pin 154.
Referring to fig. 1 to fig. 3, as an implementation manner, the tool 100 for switching between burnable poison assemblies and neutron source assemblies of a nuclear power plant further includes a tension detection component 180, and the tension detection component 180 is disposed on the steel wire rope 134 and is configured to detect a weight of a member to be switched. The tension detection component 180 can measure the tension on the steel wire 134 in real time to realize the real-time detection control of the lifting of the gripper head structure 120 and ensure the stable and reliable motion of the to-be-switched member. The tension detecting member 180 is exemplified by a tension sensor, a torque sensor, or the like. The tool 100 for switching the burnable poison assembly and the neutron source assembly of the nuclear power plant further comprises a position detection component 170, wherein the position detection component 170 is arranged on the winding drum 133, and the position of the member to be switched is measured through the movement of the winding drum 133. Thus, an operator can determine the position of the to-be-switched member according to the position detection component 170, so as to avoid over-travel or insufficient travel of the to-be-switched member, facilitate position monitoring of the to-be-switched member, and ensure accurate and reliable switching operation. As an example, the position detecting part 170 includes, but is not limited to, an encoder, a position sensor, and the like as long as height monitoring can be achieved. The switching tool 100 for burnable poison assemblies and neutron source assemblies of a nuclear power plant realizes real-time detection and control of the lifting structure 130 through the position detection part 170 and the tension detection part 180.
Further, the tool 100 for switching between the burnable poison assembly and the neutron source assembly in the nuclear power plant further comprises a tension digital display screen and a position digital display screen, wherein the tension digital display screen is electrically connected with the tension detection component 180 and is used for displaying the weight of the member to be switched; the position digital display screen is electrically connected with the position detection component 170 and is used for displaying the height of the member to be switched. It can be understood that the load, namely the weight and the height, are displayed in a digital mode, the '0 point' and the load setting can be carried out at different heights, and the operation is simple; further, the height is in "mm" and the load is in "N", which is more precise. The operator can observe the load value and the height value in different positions in real time, so that the method is more intuitive and is simple to reset and set. Before the gripping head structure 120 is clamped and loosened, whether the bottom of the gripping head structure 120 descends to the bottom and a piece to be switched is gripped or not is determined, an operator can jointly judge according to two parameters of height and load, an actual value is digitally displayed in real time, the operator can feel intuitional, and the judgment accuracy is improved. Of course, in other embodiments of the present invention, the upper computer may also acquire position and moment signals in real time through the position detecting component 170 and the tension detecting component 180 and send the signals to the display for displaying, so as to realize real-time detection and control of the lifting structure 130.
As an implementation manner, the nuclear power plant burnable poison assembly and neutron source assembly reversing tool 100 further includes a manual control box, which is electrically connected to the lifting structure 130 and is used for adjusting the operating mode and the operating speed of the nuclear power plant burnable poison assembly and neutron source assembly reversing tool 100. The manual control box is used for realizing the operation control of the nuclear power plant burnable poison assembly and neutron source assembly switching tool 100. The manual control box is arranged on the top of the nuclear power plant burnable poison assembly and neutron source assembly switching tool 100, is connected with the nuclear power plant burnable poison assembly and neutron source assembly switching tool 100 through a cable, and is held by an operator during operation. The manual control box has a normal mode and a maintenance mode; when in normal operation, a 'normal' mode is used, and the speed conversion is automatically carried out; in abnormal situations and when the burnable poison assembly and neutron source assembly switching tool 100 of the nuclear power plant is disassembled, a maintenance mode is used, so that the overall speed of the gripper head structure 120 is slow, and the risk is reduced.
Moreover, the manual control box is additionally provided with the confirmation button, which is required to be pressed before each operation, so that an operator is prompted to understand what condition the gripper structure 120 and the to-be-switched member are in at the current state, and the situation that the to-be-switched member is lifted without being received by the switching tool 100 for the burnable poison assembly and the neutron source assembly of the nuclear power plant, so that the to-be-switched member is damaged and potential safety hazards exist is avoided. Further, the manual control box further increases the collection mode, before the members to be switched are switched each time, the gripper head structure 120 goes through the whole idle load process, collects the load values of each idle load height, compares the difference with the difference obtained by subtracting the weight of the members to be switched from the actual load value during switching, reports overload or underload if the difference is too large, and displays and alarms through the manual control box.
During switching, the nuclear power plant burnable poison assembly and neutron source assembly switching tool 100 for switching the member to be switched, such as a burnable poison assembly or a neutron source assembly, and other switching tools share one electrical cabinet and a cable, programs are respectively stored in the two SD cards, and according to the difference of the connected switching tools, the programs are automatically distinguished, so that frequent cable replacement and power-on and power-off operations on site are reduced. The nuclear power plant burnable poison assembly and neutron source assembly switching tool 100 for switching the burnable poison assembly and the neutron source assembly and the electrical parts of other switching tools are integrated into an electrical cabinet, the occupied space is small, one set of cables are shared, the connector is convenient and practical, the type of the tool is automatically judged by a PLC program, and the tool is convenient to use.
Referring to fig. 1 to 7, when the nuclear power plant burnable poison assembly and neutron source assembly reversing tool 100 of the present invention is in use, a spent fuel crane is used to hoist the upper hanger 111 to a proper height on the lower hanger 112, and a steel wire 134 is fixed to the mandrel 121 by using a pin; when the upper hanger 111 is lowered to completely contact the lower hanger 112, the upper hanger 111 and the lower hanger 112 are fixed by using a threaded connector after the flange hole positions of the upper hanger and the lower hanger are aligned, and the assembly of the nuclear power plant burnable poison assembly and neutron source assembly switching tool 100 is completed. Hoisting the burnable poison assembly and neutron source assembly switching tool 100 of the nuclear power plant to the position above the fuel assembly by using a spent fuel crane, slowly descending the burnable poison assembly and neutron source assembly switching tool 100 of the nuclear power plant to enable the guide positioning pins 1121 to be matched with the positioning holes of the fuel assembly, and then enabling the burnable poison assembly and neutron source assembly switching tool 100 of the nuclear power plant to be located right above the fuel assembly; the lifting structure 130 drives the gripper head structure 120 to descend, and when the gripper head structure 120 is located at the lowest position of the gripper, the driving handle 141 is controlled to rotate through manual operation, so as to drive the driving rod 142, the driving fork 143, the driving shift pin 144, the mandrel 121, the gripper head inner cylinder 123 and the gripper head outer cylinder 122 to rotate correspondingly, and thus the locking/releasing action of the to-be-reversed part is completed. After the members to be switched are locked, operations of drawing out/inserting fuel assemblies can be performed, that is, lifting and descending operations of the members to be switched are performed, the lifting and descending operations are mainly performed by driving the winding drum 133 to rotate by the reduction gearbox 132, the steel wire rope 134 fixed on the winding drum 133 can drive the mandrel 121, the mandrel outer drum 124, the gripper outer drum 122 and the gripper inner drum 123 to ascend and descend, and the guide wheels 152 assembled on the supporting disc 151 guide along the ascending and descending path of the lower hanging bracket 112 in the ascending and descending process, so that smooth ascending and descending of the members are ensured. The member to be reversed, such as burnable poison assembly/neutron source assembly, comprises a plurality of rod bundle assemblies with the length of about 4 meters, and the diameter of the rod bundle is about 10mm, so that the rod bundle must be guided in the lifting process to avoid collision damage of the rod bundle. The nuclear power plant burnable poison assembly and neutron source assembly reversing tool 100 is provided with a guide structure 150, when a reversing member is lifted, a groove plate 153 fixed around a supporting disc 151 drives a main pin 154 and a rotating arm 155 to move along an upper sliding groove 1531 of the main pin, and the main pin 154 drives an adjusting connecting rod 156, a guide shaft 157 and a guide target 158 to reverse, so that the superposition guide function of two groups of guide targets 158 is completed; when the member to be reversed descends, the opposite main pin 154 pushes the adjusting link 156 to move downward integrally along the track of the chute 1531 of the slot plate 153, so as to turn the guiding target 158 outward. In order to prevent the guide target 158 from being opened accidentally, the nuclear power plant burnable poison assembly and neutron source assembly switching tool 100 is provided with an emergency structure 160, when an emergency handle 161 is in a looseness-proof state, a safety clamp plate 163 is compressed in association with the main pin 154 to realize automatic locking, and when the guide target 158 needs to be unlocked, the emergency handle 161 is tensioned to realize automatic locking.
Specifically, the driving motor 131 controls the reduction gearbox 132 to rotate reversely, the winding drum 133 rotates to lower the steel wire rope 134, and the gripper head structure 120 is driven to descend. When the head structure 120 descends, the groove plate 153 on the support plate 151 drives the main pin 154 to move downwards along the track of the sliding groove 1531, the main pin 154 drives the rotating arm 155, the adjusting connecting rod 156, the guide shaft 157 and the guide target 158 to move, the guide target 158 is opened to avoid the head structure 120, and the guide target 158 keeps a stable self-locking state under the action of self gravity after the main pin 154 is completely separated from the groove plate 153. When the head structure 120 descends to the lowest position, the driving handle 141 is operated to grab the member to be reversed. After the to-be-switched member is locked at the bottom of the gripper head structure 120 by the locking structure 140, the reduction gearbox 132 is controlled to rotate forward, the reel 133 rotates to retract the steel wire 134, and the gripper head structure 120 and the to-be-switched member are driven to ascend along the interior of the lower hanger 112. After the head structure 120 and the to-be-switched member are lifted to a height above the main pin 154, the slot 153 on the support plate 151 contacts the main pin 154 to drive the main pin 154 to move upwards along the track of the sliding slot 1531, the main pin 154 drives the rotating arm 155, the adjusting link 156, the guide shaft 157 and the guide target 158 to move, and the guide target 158 is closed to guide the to-be-switched member. After the main pin 154 is completely separated from the groove plate 153, the guide target 158 is locked by the safety handle 164 and the safety catch plate 163, and the unlocking can be completed by the emergency handle 161 driving the emergency rope 162. The gripper head structure 120 and the member to be reversed are lifted continuously, and the component can be transferred when the gripper head structure and the member to be reversed are completely retracted into the lower hanger 112. The extraction and the insertion of the pieces to be switched can be continuously realized by repeating the steps.
The technical features of the embodiments described above can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (13)
1. A burnable poison subassembly of nuclear power plant and neutron source subassembly switching instrument which characterized in that includes:
a support frame body;
the lifting structure is arranged at the top of the support frame body;
the grabbing head structure is arranged in the support frame body, the bottom of the grabbing head structure is suitable for being connected with a piece to be replaced, the top of the grabbing head structure is connected with the lifting structure, and the lifting structure drives the grabbing head structure to do lifting motion; the gripper structure comprises a mandrel, a gripper outer cylinder and a gripper inner cylinder, the gripper outer cylinder is sleeved outside the gripper inner cylinder and is fixedly connected with the bottom of the mandrel, and the bottom of the gripper inner cylinder and the bottom of the gripper outer cylinder are both provided with a gripper hook which is used for hooking the to-be-switched piece;
the locking structure is arranged in the support frame body and connected with the gripper head structure, and the locking structure is used for locking or unlocking the to-be-switched piece at the bottom of the gripper head structure; and
the guide structure is arranged in the support frame body and used for guiding the lifting motion of the to-be-switched piece; the guide structure comprises a movement assembly, a transmission assembly and a guide assembly, the movement assembly is sleeved on the outer side of the mandrel, and the transmission assembly is in transmission connection with the guide assembly; the lifting motion of the mandrel can drive the motion assembly to synchronously ascend or descend, and the transmission assembly drives the guide assembly to open the channel of the support frame body or guide the to-be-switched piece;
the transmission assembly comprises a supporting disc, a groove plate and two groups of guide wheels, the supporting disc is sleeved on the mandrel, the guide wheels are symmetrically and rollably arranged on the supporting disc, the guide wheels roll along the supporting frame body, an inclined sliding groove is formed in the groove plate along the height direction, and when the mandrel drives the groove plate to move up and down through the supporting disc, the end part of the transmission assembly can slide into or slide out of the sliding groove; the transmission assembly comprises a main pin, a rotating arm and an adjusting connecting rod, the main pin is rotatably connected with the rotating arm and the adjusting connecting rod, the other end of the rotating arm is rotatably arranged on the support frame body, and the other end of the adjusting connecting rod is connected with the guide assembly; the guide assembly comprises a guide shaft and a guide target, the guide shaft is in transmission connection with the guide target and the adjusting connecting rod, and the adjusting connecting rod drives the guide target to rotate through the guide shaft so as to open or close the channel inside the support frame body.
2. The tool for switching the burnable poison assembly and the neutron source assembly of the nuclear power plant according to claim 1, wherein the lifting structure comprises a driving motor, a reduction gearbox, a winding drum and a steel wire rope wound on the winding drum, and an output end of the driving motor drives the winding drum to rotate through the reduction gearbox, so that the winding drum releases or winds the steel wire rope;
the tail end of the steel wire rope is connected to the top of the mandrel.
3. The tool for switching between burnable poison assemblies and neutron source assemblies in nuclear power plants according to claim 1, wherein the locking structure comprises a driving handle, a driving rod, a driving fork and a driving pin, the driving handle and the driving rod are both disposed in the support frame, and the driving rod connects the driving handle and the driving fork;
the driving shifting fork is rotationally arranged on the supporting frame body, the driving shifting pin is arranged at the top of the mandrel and abutted against the driving shifting pin, and the driving shifting fork can drive the driving shifting pin to rotate and drive the mandrel to rotate.
4. The tool for inverting burnable poison assemblies and neutron source assemblies according to claim 1, wherein when the end of the driving assembly slides into the sliding slot, the driving assembly drives the guiding assembly to guide the member to be inverted.
5. The tool for rearranging the burnable poison assembly and the neutron source assembly of the nuclear power plant according to claim 4, wherein a plurality of guide slots are formed in the guide target, and the plurality of guide slots are arranged in parallel and are communicated with each other, and the guide slots are used for allowing the member to be rearranged to pass through and guiding the member to be rearranged.
6. The tool for inverting burnable poison assemblies and neutron source assemblies according to claim 5, wherein the number of the slot plates, the number of the transmission assemblies and the number of the guide assemblies are four, and the four slot plates are symmetrically distributed on the peripheral side of the support plate and connected to the corresponding guide assemblies through the corresponding transmission assemblies;
the four guide targets are arranged in two layers, and the two layers of guide targets are staggered by 90 degrees, so that the guide grooves of the two layers of guide targets are partially overlapped and are used for accommodating the pieces to be rearranged.
7. The tool for rearranging the burnable poison assembly and the neutron source assembly of the nuclear power plant according to claim 1, further comprising an emergency structure, wherein the emergency structure is disposed in the support frame body and is connectable with the guide structure for limiting a position of the guide structure when the member to be rearranged is not guided.
8. The tool for switching burnable poison assemblies and neutron source assemblies according to claim 7, wherein the emergency structure comprises an emergency handle, an emergency rope, a safety handle and a safety clamp plate, the safety clamp plate is rotatably disposed on the safety handle, the safety handle is disposed in the support frame, the emergency rope connects one end of the safety clamp plate with the emergency handle, and the other end of the safety clamp plate can hook the kingpin.
9. The tool for switching burnable poison assemblies and neutron source assemblies according to claim 1, wherein the support frame comprises an upper hanger and a lower hanger, the upper hanger is located above the lower hanger and detachably connected to the lower hanger.
10. The tool for rearranging the burnable poison assembly and the neutron source assembly of the nuclear power plant according to claim 1, wherein a guiding positioning pin is disposed at the bottom of the supporting frame body for positioning the member to be rearranged.
11. The tool for switching the burnable poison assembly and the neutron source assembly of the nuclear power plant according to claim 2, further comprising a tension detection component and a position detection component, wherein the tension detection component is disposed on the steel wire rope and is configured to detect a weight of the member to be switched;
the position detection component is arranged on the winding drum and used for acquiring the position of the piece to be reversed according to the movement distance of the winding drum.
12. The tool for switching the burnable poison assembly and the neutron source assembly of the nuclear power plant according to claim 11, further comprising a tension digital display screen and a position digital display screen, wherein the tension digital display screen is electrically connected to the tension detection component for displaying the weight of the member to be switched; and the position digital display screen is electrically connected with the position detection part and is used for displaying the height of the to-be-switched piece.
13. The tool for switching the burnable poison assembly and the neutron source assembly according to claim 1, further comprising a manual control box, wherein the manual control box is disposed on the support frame and electrically connected to the lifting structure, and the manual control box is configured to adjust an operation mode and an operation speed of the tool for switching the burnable poison assembly and the neutron source assembly.
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| CN201810554497.XA CN108766606B (en) | 2018-06-01 | 2018-06-01 | Burnable poison assembly and neutron source assembly switching tool for nuclear power plant |
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| CN201810554497.XA CN108766606B (en) | 2018-06-01 | 2018-06-01 | Burnable poison assembly and neutron source assembly switching tool for nuclear power plant |
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| CN206379184U (en) * | 2016-12-15 | 2017-08-04 | 中广核工程有限公司 | Nuclear power plant's C＆P systems underwater operation instrument |
| CN107910093A (en) * | 2017-08-21 | 2018-04-13 | 成都合众思创防护设备有限公司 | The pick tool of remote pickup radiation |
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