CN113782240A - Replacing tool for control rod moving body - Google Patents
Replacing tool for control rod moving body Download PDFInfo
- Publication number
- CN113782240A CN113782240A CN202110918413.8A CN202110918413A CN113782240A CN 113782240 A CN113782240 A CN 113782240A CN 202110918413 A CN202110918413 A CN 202110918413A CN 113782240 A CN113782240 A CN 113782240A
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- China
- Prior art keywords
- control rod
- moving body
- rod moving
- sleeve
- refueling
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 210000000078 claw Anatomy 0.000 claims description 34
- 238000003825 pressing Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 description 19
- 230000008569 process Effects 0.000 description 15
- 230000000149 penetrating effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
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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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- 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
- G21C19/10—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements
- G21C19/105—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements with grasping or spreading coupling elements
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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
Abstract
The invention provides a material changing tool of a control rod moving body, which comprises a sleeve part and a clamping part, wherein the clamping part is arranged in the material changing tool, a limiting groove is arranged on the control rod moving body, and after the control rod moving body is inserted into the sleeve part, the clamping part is clamped in the limiting groove, so that the control rod moving body and the sleeve part are fixed in the axial direction and the radial direction. The material changing tool can be operated by matching with the control rod moving body, so that the material changing of the control rod moving body is realized, the structure of the material changing tool is simple, and the reliability of the connection mode of the material changing tool and the control rod moving body is improved.
Description
Technical Field
The invention belongs to the technical field of nuclear industry, and particularly relates to a refueling tool for a control rod moving body.
Background
In a nuclear reactor, the rate of the chain reaction is controlled to a predetermined level by the absorption of neutrons by the control rod assembly. In the process of core refueling, a refueling tool needs to be matched with the control rod assembly, so that the refueling tool of the control rod moving body related to the refueling of the control rod assembly is complex, and the connection reliability is low.
Disclosure of Invention
In view of the above, the present invention provides a refueling tool for a control rod moving body, so as to solve the technical problem of how to improve the connection reliability with the control rod moving body while simplifying the structure of the refueling tool.
The technical scheme of the invention is realized as follows:
an embodiment of the present invention provides a refueling tool for a control rod moving body, including:
a sleeve member into which the control rod moving body is at least partially extendable;
a clamping member connected with the sleeve member;
the control rod moving body is provided with a limiting groove in the circumferential direction, and the clamping component is used for being clamped in the limiting groove to fix the sleeve component and the control rod moving body.
Further, the clip member includes:
and the hook claw is partially of a convex structure and is used for being clamped into or separated from the limiting groove.
Further, the clip member further includes:
a mounting member fixedly connected to the sleeve member;
and the first elastic piece is used for connecting the mounting piece and the hook claw.
Further, the sleeve member includes:
the connector is of a hollow structure and is provided with a first groove extending along the axis direction, and at least part of the clamping part is arranged in the first groove;
and the outer sleeve is fixedly connected with the connector, is arranged to be of a hollow structure and is used for inserting the control rod moving body.
Further, first recess sets up to a plurality of, and is a plurality of first recess is in equidistant setting in the circumference of connector, and every all be equipped with in the first recess the joint part.
Further, the sleeve member further comprises:
and the lower end piece is fixedly connected with one side of the outer sleeve far away from the connector so as to seal an opening at one end of the outer sleeve.
Further, the sleeve member further comprises:
and the pressing component is used for pressing the control rod moving body under the condition that the clamping component is clamped with the control rod moving body.
Further, the pressing member includes:
the support sleeve is arranged in the outer sleeve, and one end of the support sleeve is detachably and fixedly connected with the lower end piece;
a support seat disposed within the support thimble, the control rod mover being partially disposed within the support seat for movement against the support seat relative to the support thimble;
the second elastic piece is arranged between the supporting seat and the supporting sleeve.
Further, the supporting seat is provided with a convex part extending along the axis direction, the supporting sleeve is provided with a through hole, the second elastic piece is sleeved outside the convex part, and the convex part is inserted into the through hole.
Further, still include:
a refueling grab glove for grabbing the control rod moving body into the sleeve member;
the end part of the material replacing grab sleeve is provided with a plurality of second grooves extending along the axial direction, and the end surface position between every two adjacent second grooves is a conical surface structure; the second groove is overlapped with the limit groove in a state that the clamping component and the control rod moving body are fixed; and under the state that the clamping component and the control rod moving body are separated and fixed, the conical surface abuts against the clamping component so that the clamping component is separated from the limiting groove.
According to the material changing tool of the control rod moving body, the clamping component is arranged in the material changing tool, the limiting groove is formed in the control rod moving body, and after the control rod moving body is inserted into the sleeve component, the clamping component is clamped in the limiting groove, so that the control rod moving body and the sleeve component are fixed in the axial direction and the radial direction. The material changing tool can be operated by matching with the control rod moving body, so that the material changing of the control rod moving body is realized, the structure of the material changing tool is simple, and the reliability of the connection mode of the material changing tool and the control rod moving body is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a refueling tool according to an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic structural diagram of a refueling tool according to an embodiment of the present invention;
FIG. 4 is an enlarged view of portion B of FIG. 1;
fig. 5 is an enlarged view of the portion C in fig. 3.
Description of reference numerals:
1. a sleeve member; 11. a connector; 111. a first groove; 12. an outer sleeve; 13. a lower end piece; 14. a pressing member; 141. a support sleeve; 141a, a support plate; 141b, a through hole; 142. a supporting seat; 142a, a convex portion; 142b, a step groove; 143. a second elastic member; 2. a clip member; 21. a hook claw; 211. a raised structure; 212. a bevel; 213. a pin; 22. a first elastic member; 23. a mounting member; 3. a control rod moving body; 3a, a step surface; 31. a limiting groove; 4. the reactor core small grid plate header; 5. the material replacing machine grabs the gloves; 51. a second groove; 52. a conical surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various possible combinations of the specific features of the invention will not be described further.
In the following description, the term "first/second/so" is used merely to distinguish different objects and does not mean that there is a common or relationship between the objects. It should be understood that the description of the "upper", "lower", "outer" and "inner" directions as related to the orientation in the normal use state, and the "left" and "right" directions indicate the left and right directions indicated in the corresponding schematic drawings, and may or may not be the left and right directions in the normal use state.
It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. "plurality" means greater than or equal to two.
The control rod assembly in the embodiment of the invention is arranged in a split structure and consists of the control rod moving body and the control rod sleeve, and the split control rod moving body and the control rod sleeve have different refueling periods, so that the control rod moving body and the control rod sleeve need to be recharged independently, and different refueling special tools need to be adopted correspondingly for refueling. The control rod moving body in the embodiment of the invention can be a thin-wall round tube with the thickness of 5mm as the outer main body, and can be a long rod-shaped structure with the total length of 2000mm, the maximum outer diameter of the control rod moving body can be set to be 90mm, and the part for matching with the control rod moving body for changing materials is limited, so that the material changing tool of the control rod moving body, which can simplify the structure of the material changing tool and improve the connection reliability with the control rod moving body, is provided.
It should be noted that the refueling tool provided by the embodiment of the present invention can participate in the entire process of reactor core refueling after being connected with the control rod moving body, and can be compatible with various devices in the refueling system, including but not limited to an in-plant transportation barrel, a new component and spent component conversion barrel, a loading and unloading elevator hanging barrel, and the like.
An embodiment of the invention provides a refueling tool for a control rod moving body, which comprises a sleeve part 1 and a clamping part 2 as shown in figure 1. The sleeve member 1 is provided as a hollow structure, and the control rod moving bodies 3 can be at least partially inserted into the sleeve member 1. The clamping member 2 is connected with the sleeve member 1, and it should be noted that the clamping member 2 can be detachably and fixedly connected with the sleeve member 1. The control rod moving body 3 may have a substantially long rod-like structure, the control rod moving body 3 may have a stopper groove 31 formed in a circumferential direction thereof, the stopper grooves 31 may be provided at both end portions of the control rod moving body 3, and the stopper groove 31 may be provided at a middle portion of the control rod moving body 3. The engaging member 2 may be disposed at an end portion of the sleeve member 1 in the longitudinal extension direction (the vertical direction shown in fig. 1), and the engaging member 2 may be disposed at a middle portion of the sleeve member 1 in the longitudinal extension direction. In the process of refueling, the control rod moving body 3 can be partially inserted into the sleeve part 1, and under the condition that the position of the limiting groove 31 on the control rod moving body 3 corresponds to the position of the clamping part 2, the clamping part 2 is arranged in the limiting groove 31, so that the control rod moving body 3 and the sleeve part 1 are relatively fixed. The fixation of the control rod moving body 3 to the sleeve member 1 includes fixation in the axial direction of the sleeve member 1 and fixation in the circumferential direction around the sleeve member 1, and it should be noted that, in the case where the sleeve member 1 is a substantially cylindrical sleeve, the axial direction of the sleeve member 1 may be regarded as the axial direction of the cylinder, and the axial direction of the sleeve member 1 is not limited to the direction of a certain straight line, but may be the direction of a set of parallel lines, for example, the axial direction is the front-rear direction and is not limited to the direction of a certain straight line extending in the front-rear direction; in addition, the circumferential direction of the sleeve member 1 can be represented by the circumferential direction of the cylinder.
According to the embodiment of the invention, the clamping component 2 is arranged in the material changing tool, the limiting groove 31 is arranged on the control rod moving body 3, and after the control rod moving body 3 is inserted into the sleeve part 1, the clamping component 2 is clamped in the limiting groove 31, so that the control rod moving body 3 and the sleeve part 1 are fixed in the axial direction and the radial direction. The refueling tool can be matched with the control rod moving body to operate, so that refueling of the control rod moving body is realized, connection and disconnection of the control rod moving body 3 and the sleeve part 1 can be realized only through matching of the clamping part 2 and the limiting groove 31, the refueling tool is simple in structure, and the reliability of connection of the refueling tool and the control rod moving body 3 is improved.
In some embodiments, as shown in fig. 2, the limiting groove 31 in the control rod moving body 3 is an inward concave structure, the clamping member 2 includes a hook 21, the hook 21 is partially a convex structure 211 (which is convex from right to left in fig. 2), and the convex structure 211 in the hook 21 is clamped in the concave structure of the limiting groove 31, so that the periphery of the convex structure 211 is limited by the limiting groove 31, thereby limiting the degree of freedom of the sleeve member 1 in the axial direction and the circumferential direction relative to the control rod moving body 3; when the control rod moving body 3 is disengaged from the sleeve member 1, the boss structure 211 in the hook 21 only needs to be disengaged from the stopper groove 31. The connection and disconnection mode of the embodiment of the invention is simple, and the connection and disconnection of the sleeve part 1 and the control rod moving body 3 can be realized only by the matching of the convex structures 211 of the hook claws 21 and the limiting grooves 31.
In some embodiments, as shown in fig. 2, the clip member 2 further includes a mounting member 23 and a first elastic member 22. The mounting member 23 is fixedly connected with the sleeve member 1, the mounting member 23 and the sleeve member 1 may be detachably fixedly connected, and the mounting member 23 and the sleeve member 1 may also be integrally formed, for example, the mounting member 23 may be fixedly connected with the sleeve member 1 by welding. The first elastic member 22 connects the mounting member 23 and the finger 21. The first elastic part 22 can be a tension spring, a torsion spring, a flexible body and other parts with recoverable deformation capacity, the first elastic part 22 is adopted to be connected with the hook claw 21, and under the condition that the hook claw 21 is clamped in the limiting groove 31, the first elastic part 22 generates acting force at the position where the hook claw 21 and the limiting groove 31 act due to deformation, so that the hook claw 21 and the limiting groove 31 are locked; under the state that the hook claw 21 breaks away from the limiting groove 31, the hook claw 21 has certain elasticity with being connected of installed part 23, and the mode of pine takes off is comparatively nimble, reduces the risk that the hook claw 21 topples over, has simplified the dismouting process of hook claw 21 with limiting groove 31, has improved the stability that the control rod moving body is connected with the tool for change.
Specifically, as shown in fig. 2, one end (the upper end shown in fig. 2) of the hook 21 is provided with a protruding structure 211, the other end (the lower end shown in fig. 2) of the hook 21 opposite to the protruding structure 211 is rotatably connected with the first elastic member 22, the other end of the hook 21 can be provided with a through hole penetrating through two end faces of the hook 21, a pin 213 can be inserted into the through hole, and the pin 213 is connected with the first elastic member 22, so that the hook 21 and the first elastic member 22 are rotatably connected through the pin 213, and simultaneously, plug welding can be performed at two ends of the pin 213, thereby reducing the risk of loosening the pin 213 relative to the hook 21. One end (lower end shown in fig. 2) of the mounting member 23 is fixedly connected to the sleeve member 1, and the other end of the mounting member 23 may be provided with a through hole for inserting and connecting the first elastic member 22. Of course, both ends of the first elastic member 22 may be provided with through holes, and the hook claw 21 and the mounting member 23 may be connected to the through holes at both ends of the first elastic member 22 by providing a hooking portion, and the embodiment of the present invention is not limited to the specific connection form of the first elastic member 22 and the hook claw 21 and the mounting member 23.
In some embodiments, as shown in fig. 1, the sleeve member 1 comprises a connecting head 11 and an outer sleeve 12. The connecting head 11 is provided in a hollow structure, the connecting head 11 is provided at the end of the sleeve member 1, and the connecting head 11 serves as a guide during insertion of the control rod moving body 3 into the sleeve member 1. One end of the connector 11 is connected with the clamping part 2, the connector 11 is opposite to the other end of the one end is fixedly connected with the outer sleeve 12, and the connecting mode of the connector 11 and the outer sleeve 12 comprises but is not limited to welding and connecting by adopting a connecting piece. The outer sleeve 12 is provided with a hollow structure, the control rod moving body 3 is inserted into the outer sleeve 12, specifically, during the process of inserting the control rod moving body 3 into the sleeve component 1, the control rod moving body 3 firstly penetrates into the sleeve component 1 from the connecting head 11, then the control rod moving body 3 penetrates into the outer sleeve 12, the clamping component 2 at one end of the connecting head 11 is clamped with the limiting groove 31 on the control rod moving body 3, so that the control rod moving body 3 is fixed with the sleeve component 1.
Specifically, as shown in fig. 3, the coupling head 11 is provided with a first groove 111, and the extending direction of the first groove 111 is the same as the axial direction (vertical direction shown in fig. 3) of the sleeve member 1, and it should be noted that the axial direction is not limited to a direction of a straight line, but may be a direction of a set of parallel lines, for example, the axial direction is a left-right direction shown in fig. 3 and is not limited to a straight line direction extending forward and backward. As shown in fig. 3, the length of the first groove 111 is smaller than the length of the coupling head 11 in the axial direction; the first groove 111 may be a through hole groove penetrating through the inner side and the outer side of the connector 11, and it should be noted that the inner side of the connector 11 is a side close to the inner hollow structure, and the outer side of the connector 11 is a side far from the hollow structure. The first groove 111 may also be a groove structure that does not penetrate through the inner side and the outer side of the connecting head 11, that is, the depth of the first groove 111 in the vertical axial direction is smaller than the thickness of the connecting head 11. The embodiment of the present invention does not limit the specific penetrating form of the first groove 111 as long as the first groove 111 can accommodate part of the clip member 2. According to the embodiment of the invention, the clamping part 2 is at least partially arranged in the first groove 111, so that on one hand, the first groove 111 can limit the clamping part 2 to improve the stability of the clamping part 2; on the other hand, first recess 111 can play the effect of holding to joint part 2 for joint part 2 is accomodate in first recess 111, makes reloading tool's structure simple and compact more.
In some embodiments, as shown in fig. 3, the first groove 111 is provided in plural, and the plural first grooves 111 are provided equidistantly in the circumferential direction of the connection head 11. Alternatively, the joint 11 may be provided with a polygonal cross section in the axial direction, and the number of sides of the cross section of the joint 11 may be the same as the number of the first grooves 111, that is, one first groove 111 is correspondingly provided on each side of the polygonal cross section. Correspondingly, the sleeve member 1 connected to the connecting head 11 is also provided as a polygon having the same number of sides as the connecting head 11. Specifically, for example, the shape of the connecting head 11 in cross section is a hexagon, six first grooves 111 are provided on the corresponding connecting head 11, and the cross section of the sleeve member 1 connected to the connecting head 11 is also a hexagon. It should be noted that the specific shape of the connecting head 11, the specific number of the first grooves 111, and the cross-sectional shape of the sleeve member 1 are not limited in the embodiments of the present invention, as long as the first grooves 111 provided on the connecting head 11 are provided at equal intervals on the connecting head 11. That is, the distances between the adjacent first grooves 111 are all equal. All be equipped with joint part 2 in every first recess 111 for the effort of joint part 2 joint on control rod moving body 3 can be balanced and control each other, and connector 11 can play the positioning action penetrating control rod moving body 3's in-process, is used for other application scenarios at the refueling tool simultaneously, joint part 2 and control rod moving body 3 also can stable joint, for example when the refueling tool is transported and is inserted in the little grid tray header 4 of reactor core, joint part 2 can prevent that the relative control rod moving body 3 of refueling tool from taking place circumferential direction. The arrangement of the first groove in the embodiment of the invention improves the clamping reliability of the clamping component 2, and further improves the stability of the connection of the material changing tool and the control rod moving body 3.
In some embodiments, as shown in FIG. 1, sleeve member 1 further includes a lower end member 13. The outer sleeve 12 is a hollow structure with two open ends, the lower end piece 13 is arranged on one side (the lower side shown in fig. 1) of the outer sleeve 12 far away from the connector 11, and the lower end piece 13 is fixedly connected with the outer sleeve 12 and used for sealing the opening at one end of the outer sleeve 12, so that the outer sleeve 12 becomes a tube body with only one open end. One end of the opening of the outer sleeve 12 is fixedly connected with the connector 11 and is used for inserting the control rod moving body 3 to limit the control rod moving body 3; lower end piece 13 and outer sleeve 12 may be welded, connected, etc., and embodiments of the present invention are not limited to the specific connection form of lower end piece 13 and outer sleeve 12, as long as lower end piece 13 and outer sleeve 12 are fixedly connected. The outer sleeve 12 and the lower end piece 13 together provide structural support for the refueling tool so that the lower end piece 13 can be directly inserted into the core mini-grid header 4. The sleeve part 1 in the embodiment of the invention has the advantages that the appearance and the shape are easy to clean and dry, the control rod moving body 3 can be repeatedly used by cleaning and drying after the material changing tool completes one time of replacement operation, the maintenance cost is low, and the loss degree of parts is small.
In some embodiments, as shown in fig. 1, the sleeve member 1 further comprises a compression member 14. The hold-down member 14 is for holding down the control rod moving body 3 when the bayonet member 2 is bayonet-engaged with the control rod moving body 3. Specifically, in the process of inserting the control rod moving bodies 3 into the refueling tool, the control rod moving bodies 3 apply a force to the refueling tool in the axial direction toward the bottom of the sleeve member 1, and the hold-down member 14 is in a pressed state; under the condition that the clamping component 2 is connected with the limiting groove 31 on the control rod moving body 3, the pressed pressing component 14 applies opposite acting force to the control rod moving body 3, and the acting force of the clamping component 2 and the limiting groove 31 is increased by the opposite acting force, so that the clamping component 2 and the limiting groove 31 are connected more tightly, and the connection reliability of the material changing tool and the control rod moving body is improved. According to the embodiment of the invention, the compaction part 14 is additionally arranged in the sleeve part 1, so that the control rod moving body can be compacted with the refueling tool when the control rod moving body is connected with the refueling tool, and the risk of accidental unlocking of the refueling tool along with the control rod moving body due to vibration in the transfer process is reduced.
In some embodiments, as shown in fig. 1, the pressing part 14 includes a support sleeve 141, a support seat 142, and a second elastic member 143. The support thimbles 141 are provided in the outer thimbles 12, and the support thimbles 141 are provided in a structure in which at least one end thereof is opened, and particularly, a side of the support thimbles 141 adjacent to the connection head 11 is provided in an open structure so that the control rod moving body 3 can be partially inserted into the support thimbles 141. One end of the support sleeve 141 is detachably and fixedly connected with the lower end piece 13, specifically, one side of the support sleeve 141 close to the lower end piece 13 can be set to be a threaded structure, the lower end piece 13 is provided with a thread groove adapted to the threaded structure, and the support sleeve 141 is connected with the thread groove of the lower end piece 13 through the threaded structure. Of course, the connection manner of the support sleeve 141 and the lower end piece 13 includes, but is not limited to, the above-mentioned screw connection manner, and the alternative support sleeve 141 and the lower end piece 13 may also be connected by snapping, shaft pin fixing, etc., as long as the support sleeve 141 can be fixed relative to the lower end piece 13 in the circumferential direction and the axial direction. As shown in fig. 1, the supporting seat 142 is disposed in the supporting sleeve 141, the supporting seat 142 is also configured as a hollow structure, and a portion of the control rod moving body 3 can be transmitted inside the supporting seat 142, the supporting seat 142 can move in an axial direction (a vertical direction shown in fig. 1) relative to the supporting sleeve 141, during the process that the control rod moving body 3 is inserted into the sleeve part 1, the control rod moving body 3 sequentially passes through the connecting head 11 and the outer sleeve 12, and finally the control rod moving body 3 abuts against the supporting seat 142, the control rod moving body 3 drives the supporting seat 142 to move towards one side of the lower end part 13 relative to the supporting sleeve 141, until the positions of the clamping component 2 and the limiting groove 31 are aligned, and then the axial and radial positions of the clamping component 2 and the limiting groove 31 are fixed. The second elastic element 143 is disposed between the supporting seat 142 and the supporting sleeve 141, and it should be noted that the second elastic element 143 in the embodiment of the present invention includes, but is not limited to, a coil spring, a compression spring, a flexible element, and other resettable components. In the process that the control rod moving body 3 abuts against the supporting seat 142 to move towards the lower end part 13, the second elastic piece 143 is under the pressure of the supporting seat 142, after the clamping component 2 is connected with the limiting groove 31, the second elastic piece 143 continuously reacts the pressure on the supporting seat 142, the support seat 142 frame reaction force is transmitted to the control rod moving body 3, and therefore the limiting groove 31 on the control rod moving body 3 is pressed against the clamping component 2 on the material changing tool.
Specifically, as shown in fig. 4, there are various forms of axial movement of the control rod moving body 3 against the support base 142, and a step groove 142b may be provided at an end surface of the support base 142 close to the connection head 11, and when the control rod moving body 3 is inserted into the support base 142, the step surface 3a of the control rod moving body 3 and the step groove 142b of the support base 142 are fitted to each other, so that the step surface 3a of the moving body control rod 3 may push the step groove 142b of the support base 142 to move toward the bottom of the sleeve member 1 during the movement of the control rod moving body 3 toward the bottom of the sleeve member 1 (downward in fig. 4). Of course, the control rod moving body 3 may directly abut against the bottom surface of the support seat 142 (the end surface on the lower side of the support seat 142 in fig. 4) to push the support seat 142 to move, and the embodiment of the invention is not limited to the specific abutting form between the support seat 142 and the control rod moving body 3, as long as the control rod moving body 3 can push the support seat 142 to move.
In some embodiments, as shown in fig. 1, the supporting seat 142 is provided with a protrusion 142a extending along the axial direction, the protrusion 142a on the supporting seat 142 extends from the end surface of the supporting seat 142 on the side close to the lower end piece 13 to the direction of the lower end piece 13, the supporting sleeve 141 is provided with a through hole 141b, and the protrusion 142a on the supporting seat 142 can pass through the through hole 141b to move, so that the moving reliability of the supporting seat 142 is improved. Specifically, the support sleeve 141 may be provided with a support plate 141a at a position spaced apart from the lower end member 13, and the through holes 141b may penetrate through both end surfaces of the support plate 141a, such that the portions of the protrusions 142a inserted into the through holes 141b have redundant spaces between the support plate 141a and the lower end member 13. As shown in fig. 1, the second elastic member 143 is disposed between the support plate 141a and the support base 142, and the protrusion 142a is inserted into the second elastic member 143, so that the protrusion 142a can play a role in defining the circumferential direction of the second elastic member 143. Of course, the second elastic member 143 in other embodiments may not be inserted outside the protrusion 142a, and only the second elastic member 143 may be provided between the support plate 141a and the support base 142 to be able to press the control rod moving body and the refueling tool.
In some embodiments, as shown in fig. 3, the refueling tool further includes a refueling grab glove 5, the refueling grab glove 5 being used to grab the control rod moving body 3 into the sleeve member 1, specifically, the refueling grab glove 5 grabs one end of the control rod moving body 3 and inserts the other end of the control rod moving body 3 into the sleeve member 1 such that the limit groove 31 on the control rod moving body 3 is aligned with the snap member 2. Specifically, as shown in fig. 2, the end of the refueling grab glove 5 is provided with a plurality of second grooves 51 extending in the axial direction (the vertical direction shown in fig. 3), it should be noted that one end of the refueling grab glove 5 is used for grabbing the control rod moving body 3, the one end of the refueling grab glove 5 can be roughly regarded as a hollow cylinder structure, and the control rod moving body 3 is partially located in the refueling grab glove 5 in a state where the refueling grab glove 5 grabs the control rod moving body 3; it should be noted that one side of the refueling grab glove 5 close to the internal hollow structure is an inner side, the other side far away from the hollow structure is an outer side, and the second groove 51 is a through hole groove penetrating through the inner side and the outer side of the refueling grab glove 5. Specifically, the second groove 51 may be a strip groove. The end surface between adjacent second grooves 51 is provided as a tapered surface 52, and referring to fig. 5, the tapered surface 52 on the reclaimer grab sleeve 5 may be a surface having a set angle with the axial direction. The second groove 51 overlaps the limit groove 31 in a state where the clip member 2 and the control rod moving body 3 are fixed, the clip member 2 passes through the second groove 51 and is connected with the limit groove 31, and the refueling grab glove 5 can be disconnected from the control rod moving body 3 after the sleeve member 1 and the control rod moving body 3 are stably connected; when the clamping component 2 and the control rod moving body 3 need to be separated and fixed, the position of the conical surface 52 in the refueling grab glove 5 is aligned with the position of the clamping component 2 through rotation of the refueling grab glove 5, the position means that the conical surface 52 of the refueling grab glove 5 is approximately on the same straight line with the clamping component 2 and the limiting groove 31 in the axial direction, the conical surface 52 of the refueling grab glove 5 is abutted against the end part of the claw 21 (the upper part of the claw 21 shown in fig. 5) through the movement of the refueling grab glove 5 towards the direction of the clamping component 2 (the downward movement shown in fig. 2), the end part of the claw 21 is provided with an inclined surface 212 matched with the conical surface 52 of the refueling grab glove 5, and the conical surface 52 of the refueling grab glove 5 pushes the inclined surface 212 to enable the claw 21 to be withdrawn from the limiting groove 31, so that the clamping component 2 is separated from the control rod moving body 3.
In the embodiment of the invention, the second grooves 51 and the conical surfaces 52 are alternately arranged at the end part of the gripper sleeve 5 of the refueling machine, so that the clamping part 2 can pass through the second grooves 51 to be connected with the limiting groove 31 in the process of connecting the sleeve part 1 with the control rod moving body 3; under the condition that the sleeve part 1 does not need to be connected with the control rod moving body 3, the conical surface 52 of the refueling machine grabbing glove 5 can abut against the hook claw 21 and move towards one side of the hook claw 21, the conical surface 52 of the refueling machine grabbing glove 5 gradually props open the hook claw 21, so that the hook claw 21 exits from the limiting groove 31, the connection between the refueling machine grabbing glove 5 and the control rod moving body 3 is realized, the structures of the refueling machine grabbing glove 5, the sleeve part 1 and the control rod moving body 3 are simple, the locking and unlocking between the control rod moving body 3 and the sleeve part 1 can be realized only through the mutual matching of the refueling machine grabbing glove 5 and the sleeve part 1, and the connection reliability between the sleeve part 1 and the control rod moving body is improved while the structures of the sleeve part 1 and the refueling machine grabbing glove 5 are simplified.
The operational flow of the refueling tool is generally described as follows:
as shown in fig. 1 to 5, during the operation of locking the control rod moving body 3 and the bayonet part 2, the sleeve part 1 and the control rod moving body 3 need to be locked, the refueling grab glove 5 grabs the control rod moving body 3, then the refueling grab glove 5 performs rotational positioning, the second groove 51 at one end (lower end shown in fig. 1) of the refueling grab glove 5 is aligned with the hook 21 of the bayonet part 2, and the control rod moving body 3 is inserted into the sleeve part 1 after the positioning is completed. During the insertion process, the conical surface at the lower part (the lower side shown in figure 1) of the limiting groove 31 on the operating head of the control rod moving body 3 is firstly contacted with the hook claw 21, and the hook claw 21 rotates around the pin 213 towards the outer side far away from the control rod moving body 3 under the action of the conical surface along with the continuous movement (the downward movement shown in figure 1) of the control rod moving body 3, so that the hook claw 21 is gradually expanded; during the rotation of the hook claw 21, the first elastic member 22 is stretched and provides a pulling force to the root portion (the lower side of the hook claw shown in fig. 1) of the hook claw 21, when the hook claw 21 enters the limiting groove 31, the hook claw 21 rotates toward the side of the limiting groove 31 under the action of the first elastic member 22, and the convex structure 211 on the hook claw 21 is buckled into the limiting groove 31. Meanwhile, the lower end pin of the control rod moving body 3 enters the support seat 142 of the sleeve part 1, the second elastic member 143 is compressed and provides upward (upward in fig. 1) elastic force to the support seat 142 and the control rod moving body 3, and the hook claw 21 is pressed in the limit groove 31 under the elastic force, so that the control rod moving body 3 and the sleeve part 1 are locked.
As shown in fig. 3, in the operation of unlocking the control rod moving body 3 from the bail member 2, the refueling grab sleeve 5 is first rotated to displace the second recess 51 of the lower end (lower end shown in fig. 3) of the refueling grab sleeve 5 from the hook 21 of the bail member 2, and then the refueling grab sleeve 5 is moved down (moved down as shown in fig. 3) until it presses against the operating head of the control rod moving body 3. In the process that the refueling grab sleeve 5 moves downwards, the conical surface 52 between the adjacent second grooves 51 on the refueling grab sleeve 5 is firstly contacted with the inclined surface 212 at the upper end of the hook 21 of the clamping part 2, the hook 21 rotates outwards around the pin under the action of the conical surface 52 of the refueling grab sleeve 5, and the convex structure 211 at the upper end (the upper end shown in fig. 2) of the hook 21 is disengaged from the limiting groove 31 of the control rod moving body 3; next, the refueling grab glove 5 moves upward (upward movement shown in fig. 2), the control rod moving body 3 moves upward with the refueling grab glove 5 by the restoring force of the second elastic member 143 (upward movement shown in fig. 2), and the sleeve member 1 is unlocked from the control rod moving body 3.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. A tool for reloading a control rod moving body, comprising:
a sleeve member into which the control rod moving body is at least partially extendable;
a clamping member connected with the sleeve member;
the control rod moving body is provided with a limiting groove in the circumferential direction, and the clamping component is used for being clamped in the limiting groove to fix the sleeve component and the control rod moving body.
2. The tool of claim 1, wherein the snap-in component comprises:
and the hook claw is partially of a convex structure and is used for being clamped into or separated from the limiting groove.
3. The tool of claim 2, wherein the snap-in component further comprises:
a mounting member fixedly connected to the sleeve member;
and the first elastic piece is used for connecting the mounting piece and the hook claw.
4. The refueling tool as recited in claim 1, wherein the sleeve member includes:
the connector is of a hollow structure and is provided with a first groove extending along the axis direction, and at least part of the clamping part is arranged in the first groove;
and the outer sleeve is fixedly connected with the connector, is arranged to be of a hollow structure and is used for inserting the control rod moving body.
5. The tool for changing materials of claim 4, wherein said first grooves are provided in plurality, said first grooves are provided in said connector in a circumferentially equidistant manner, and each of said first grooves is provided with said engaging member therein.
6. The refueling tool as recited in claim 4, wherein the sleeve member further comprises:
and the lower end piece is fixedly connected with one side of the outer sleeve far away from the connector so as to seal an opening at one end of the outer sleeve.
7. The refueling tool as recited in claim 6, wherein the sleeve member further comprises:
and the pressing component is used for pressing the control rod moving body under the condition that the clamping component is clamped with the control rod moving body.
8. The refueling tool as recited in claim 7, wherein the compacting member comprises:
the support sleeve is arranged in the outer sleeve, and one end of the support sleeve is detachably and fixedly connected with the lower end piece;
a support seat disposed within the support thimble, the control rod mover being partially disposed within the support seat for movement against the support seat relative to the support thimble;
the second elastic piece is arranged between the supporting seat and the supporting sleeve.
9. The tool as claimed in claim 8, wherein the support base is provided with a projection extending in the axial direction, the support sleeve is provided with a through hole, the second elastic member is fitted around the outside of the projection, and the projection is inserted into the through hole.
10. The refueling tool as recited in claim 1, further comprising:
a refueling grab glove for grabbing the control rod moving body into the sleeve member;
the end part of the material replacing grab sleeve is provided with a plurality of second grooves extending along the axial direction, and the end surface position between every two adjacent second grooves is a conical surface structure; the second groove is overlapped with the limit groove in a state that the clamping component and the control rod moving body are fixed; and under the state that the clamping component and the control rod moving body are separated and fixed, the conical surface abuts against the clamping component so that the clamping component is separated from the limiting groove.
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| CN202110918413.8A CN113782240B (en) | 2021-08-11 | 2021-08-11 | A reloading instrument for control stick mobile body |
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| CN202110918413.8A CN113782240B (en) | 2021-08-11 | 2021-08-11 | A reloading instrument for control stick mobile body |
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