CN110265156B - Limiting type irradiation sample hole plug and locking method - Google Patents
Limiting type irradiation sample hole plug and locking method Download PDFInfo
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- CN110265156B CN110265156B CN201910567106.2A CN201910567106A CN110265156B CN 110265156 B CN110265156 B CN 110265156B CN 201910567106 A CN201910567106 A CN 201910567106A CN 110265156 B CN110265156 B CN 110265156B
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/06—Sealing-plugs
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/06—Sealing-plugs
- G21C13/073—Closures for reactor-vessels, e.g. rotatable
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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 discloses a limiting type irradiation sample hole plug which comprises an irradiation plug main body, wherein an upper end cover is arranged at the upper end of the irradiation plug main body, an operating rod is movably arranged in the upper end cover, a self-locking mechanism is arranged at the lower end of the irradiation plug main body, a self-locking trigger end is arranged at the lower end of the operating rod, and a first buckle is arranged in the middle of the operating rod; above-mentioned upper end cover lower part is equipped with the second buckle for by second buckle and first buckle locking each other, above-mentioned upper end cover lower part still is equipped with wedge telescopic machanism to it is complicated to expect to solve irradiation sample hole stopper structure, and irradiation sample hole stopper need shift to locking position after, locks through artificial mode, the problem of its locking inefficiency.
Description
Technical Field
The invention relates to a nuclear reactor component, in particular to a limiting type irradiation sample hole plug and a locking method.
Background
In the existing pressurized water nuclear reactor, in order to test the change of mechanical properties of the pressure vessel body material after being radiated, an irradiation sample rack is arranged on the outer side of a heat shielding plate of a lower reactor internal component, an irradiation sample monitoring pipe is arranged, and a hole plug component is matched, so that the requirements of monitoring and supervision can be met in the service period of the pressure vessel.
In the actual application process, the hole plug assembly needs to be pulled out at different reaction stages of the nuclear reactor, and the irradiation sample monitoring tube is taken out, so that the change of a pressure container of the reactor is monitored; the hole plug is arranged on the flange surface of the hanging basket, when the hole plug is taken down, the drawing channel of the monitoring pipe can be exposed, and the hole plug is arranged to reduce the flow loss of the core coolant.
The existing pressurized water type reaction hole plug is complex in structure, and a common hole plug does not have the automatic locking capability, so that after an upper in-pile component of the sample hole plug is taken out, a certain potential safety hazard exists if a safety injection system full-flow test or equipment failure occurs; after the irradiation sample hole plug needs to be displaced to the locking position, the irradiation sample hole plug is locked in a manual mode, and the locking efficiency is low; therefore, how to optimize the structure of the sample hole plug is worth researching on having a safe self-locking function on the basis of a simple structure.
Disclosure of Invention
The invention aims to provide a limiting type irradiation sample hole plug and a locking method, aiming at solving the problems that the irradiation sample hole plug is complex in structure, the irradiation sample hole plug needs to be locked in a manual mode after being displaced to a locking position, and the locking efficiency is low.
In order to solve the technical problems, the invention adopts the following technical scheme:
a limiting type irradiation sample hole plug comprises an irradiation plug main body, wherein an upper end cover is installed at the upper end of the irradiation plug main body, an operating rod is movably installed in the upper end cover, a self-locking mechanism is installed at the lower end of the irradiation plug main body, a self-locking trigger end is arranged at the lower end of the operating rod, and a first buckle is arranged in the middle of the operating rod; the lower part of the upper end cover is provided with a second buckle for being mutually locked by the second buckle and the first buckle, and the lower part of the upper end cover is also provided with a wedge-shaped telescopic mechanism; the self-locking mechanism is used for triggering the self-locking mechanism by the self-locking triggering end and locking the irradiation plug main body in the irradiation sample monitoring tube by the self-locking mechanism; the wedge-shaped telescopic mechanism is used for controlling the time for locking the second buckle and the first buckle mutually.
Preferably, above-mentioned wedge telescopic machanism includes mounting panel, spacing spring, wedge pole, wedge contact, and the upper end cover is connected to above-mentioned mounting panel, and above-mentioned wedge pole movable mounting is on the mounting panel, and above-mentioned wedge pole head end is equipped with the wedge contact, and the terminal second buckle of contradicting of above-mentioned wedge pole, mounting panel and wedge contact are contradicted respectively at above-mentioned spacing spring both ends.
Further technical scheme is, above-mentioned irradiation stopper main part lateral wall is equipped with the circular port, and above-mentioned circular port is identical with the wedge contact for stretch out the circular port by the wedge contact, be equipped with the cavity groove on the above-mentioned action bars, above-mentioned wedge rod passes cavity groove conflict second buckle.
Preferably, a pressure stabilizing mechanism is arranged inside the irradiation plug main body and used for applying a downward pressure to the operating rod by the pressure stabilizing mechanism so that the self-locking triggering end moves downwards to cooperate with the self-locking mechanism to lock the irradiation plug main body.
The further technical scheme is that the pressure stabilizing mechanism comprises a spring baffle and a main spring, the spring baffle is fixedly installed on the operating rod, and two ends of the main spring are respectively connected with the spring baffle and the bottom of the upper end cover and used for applying tension to the spring baffle by the main spring.
Preferably, the side wall of the upper end cover is provided with at least two deep holes, and the side wall of the irradiation plug body is provided with side holes corresponding to the deep holes.
Preferably, the irradiation plug body has an opening at a lower portion thereof, the self-locking mechanism is installed in the opening, the self-locking mechanism includes at least two self-locking blocks, each self-locking block has a contact groove, the self-locking trigger end is a tapered block, and an edge of the tapered block is in contact with the contact groove, and is configured to apply a pushing force to the self-locking block by the self-locking trigger end, so that the self-locking block moves out of the opening.
The self-locking mechanism further comprises a return spring, wherein two ends of the return spring are respectively connected with different self-locking blocks and used for being mutually folded by the self-locking blocks.
A further technical scheme is that a boss is arranged on one side, close to the abutting groove, of the self-locking block, the height of the boss is larger than the opening height of the lower end of the irradiation plug main body, and the boss abuts against the irradiation plug main body to limit the self-locking block.
The invention also provides an irradiation sample hole plug locking method, which comprises the following steps of checking before installation, firstly pulling the operating rod upwards to confirm whether the first buckle and the second buckle are mutually abutted and locked, and checking that the self-locking mechanism has resetting elasticity;
installing, wherein the irradiation plug main body is inserted into a sample channel of an irradiation sample monitoring tube; the irradiation sample monitoring tube is internally provided with a triggering end corresponding to the wedge-shaped contact, so that the wedge-shaped contact is abutted and contracted at the triggering end;
releasing, namely, inwards contracting the wedge-shaped contact, pushing the wedge-shaped rod to abut against the second buckle, enabling the second buckle to move backwards and be separated from the first buckle, pulling the operating rod downwards by the pressure stabilizing mechanism, inserting the self-locking trigger end into an abutting groove of the self-locking mechanism, and enabling the self-locking block to extend out of the side wall of the irradiation plug body and be locked in the irradiation sample monitoring tube;
taking out, pulling the operating rod when needing to detect, above-mentioned auto-lock trigger end breaks away from the conflict groove, and above-mentioned reset spring makes the auto-lock piece draw in each other, relieves irradiation stopper main part locking state, pulls out irradiation stopper main part, and above-mentioned spacing spring promotes the wedge contact, makes the wedge pole break away from the second buckle, and above-mentioned second buckle moves forward to with the mutual block of first buckle.
Compared with the prior art, the invention has the beneficial effects of at least one of the following:
the self-locking mechanism is used for self-locking, the self-locking time is controlled by the wedge-shaped telescopic mechanism, the self-locking is carried out after the self-locking mechanism is installed in place, the installation process and the self-locking process are combined, the installation efficiency is improved, the operating rod moves downwards after the installation time is confirmed by the wedge-shaped telescopic mechanism, the self-locking mechanism is triggered by the self-locking trigger end, and the self-locking mechanism realizes stable self-locking.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
FIG. 2 is a schematic diagram of the structural distribution of the present invention.
Fig. 3 is a schematic diagram of the locking of the self-locking block of the present invention.
Fig. 4 is a schematic structural view of the operation rod of fig. 1.
Fig. 5 is a diagram illustrating a positional relationship between the first latch and the second latch in fig. 1.
Fig. 6 is a schematic view of the installation state of the invention.
Fig. 7 is a schematic structural view of the self-locking mechanism in fig. 1.
Fig. 8 is a schematic structural installation diagram of the self-locking mechanism in fig. 1.
Fig. 9 is a schematic view of the installation of the self-locking mechanism.
FIG. 10 is a schematic structural view of the wedge-shaped retracting mechanism of the present invention.
Fig. 11 is a view showing the effect of the installation of the present invention.
The attached drawings indicate the following:
the self-locking type radiation plug comprises a radiation plug body 1, an upper end cover 2, an operating rod 3, a self-locking mechanism 4, a wedge-shaped telescopic mechanism 5, a pressure stabilizing mechanism 6, a side hole 101, a second buckle 201, a deep hole 202, a self-locking trigger end 301, a first buckle 302, a hollow groove 303, a backing plate 304, a self-locking block 401, a collision groove 402, a reset spring 403, a boss 404, a boss 501, a limiting spring 502, a wedge-shaped rod 503, a wedge-shaped contact 504, a spring baffle 601 and a main spring 602.
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.
Referring to fig. 1, 2 and 11, an embodiment of the present invention is a position-limiting irradiation sample hole plug, which includes an irradiation plug main body 1, and the irradiation plug main body 1 is installed in an irradiation sample hole of an irradiation sample monitor tube, so as to reduce the flow loss of a core coolant, and when necessary, the irradiation plug main body 1 is taken out from the irradiation sample hole to expose a drawing channel, thereby facilitating the taking out of an irradiation sample.
The upper end cover 2 is installed to above-mentioned irradiation stopper main part 1 upper end, 2 external profile on its upper end cover is identical with irradiation stopper main part 1 internal profile, its upper end cover 2 inserts in irradiation stopper main part 1, and 2 middle part trompils on the upper end cover, movable mounting has action bars 3 in the above-mentioned upper end cover 2, its action bars 3 are installed in the hole of upper end cover 2, and be on a parallel with the axis of upper end cover 2, in order to guarantee the stability that action bars 3 reciprocated, its action bars 3 upper end is equipped with backing plate 304, above-mentioned backing plate 304 size is greater than the hole of upper end cover 2, be used for conflicting upper end cover 2 by backing plate 304, make action bars 3 can excessively move down.
Referring to fig. 3, the self-locking mechanism 4 is installed at the lower end of the irradiation plug body 1, the self-locking trigger end 301 is installed at the lower end of the operating rod 3, the self-locking trigger end 301 is adapted to the self-locking mechanism 4, the self-locking trigger end 301 contacts the self-locking mechanism 4, and the self-locking mechanism 4 is triggered by the self-locking trigger end 301, which has various ways, although the existing self-locking mechanism with a sensor can be purchased, the irradiation plug body 1 is located in an irradiation sample hole of a supervisory tube of a nuclear reactor, and because of the irradiation environment, certain influence factors possibly generated on equipment exist, the structure of the self-locking trigger end 301 triggering the self-locking mechanism 4 is preferably a physical structure which is easy to replace, and triggering is performed in a physical extrusion manner.
Referring to fig. 4 and 5, a first buckle 302 is disposed in the middle of the operating rod 3; the second buckle 201 is arranged at the lower part of the upper end cover 2 and used for being locked by the second buckle 201 and the first buckle 302, wherein when the device is not used, the first buckle 302 is arranged above the second buckle 201, the top surface of the second buckle 201 is contacted with the bottom surface of the first buckle 302, the first buckle 302 is triangular, the outer side of the first buckle 302 is provided with a bevel edge, the second buckle 201 comprises an elastic plate and a triangle corresponding to the first buckle 302, and the first buckle 302 and the second buckle 201 are locked by the contact of the bottoms of the two triangles.
Through two triangle-shaped side contacts, when first buckle 302 is moved by second buckle 201 below on, the hypotenuse of its first buckle 302 contradicts the triangle-shaped hypotenuse of second buckle 201 to promote second buckle 201 and remove backward, make first buckle 302 can stably shift up, it needs to notice, need leave the space that supplies second buckle 201 to remove backward in the upper end cover 2, its elastic plate is current product, and under the elastic plate atress condition, the elastic plate can automatic re-setting.
The lower part of the upper end cover 2 is also provided with a wedge-shaped telescopic mechanism 5; the irradiation plug body 1 is locked in an irradiation sample hole of an irradiation sample supervision tube by a self-locking mechanism 4; the self-locking trigger end 301 is used for triggering the self-locking mechanism 4, the self-locking mechanism 4 is used for being locked in the inner wall of the irradiation sample hole, and the wedge-shaped telescopic mechanism 5 is used for controlling the locking time of the second buckle 201 and the first buckle 302.
Based on the above embodiment, referring to fig. 10, another embodiment of the present invention is that the wedge-shaped telescopic mechanism 5 includes a mounting plate 501, a limit spring 502, a wedge-shaped rod 503, and a wedge-shaped contact 504, the mounting plate 501 is connected to the upper end cover 2, the wedge-shaped rod 503 is movably mounted on the mounting plate 501, wherein the mounting plate 501 is vertically placed, the upper end of the mounting plate 501 is connected to the upper end cover 2, a through hole is formed in the mounting plate 501, and the wedge-shaped rod 503 is mounted in the through hole so that the wedge-shaped rod 503 can move.
The head end of the wedge rod 503 is provided with a wedge contact 504, the tail end of the wedge rod 503 abuts against the second buckle 201, and more specifically, the tail end of the wedge rod 503 abuts against an elastic plate of the second buckle 201; the two ends of the limiting spring 502 respectively abut against the mounting plate 501 and the wedge-shaped contact 504, wherein the wedge-shaped contact 504 is mounted at the head end of the wedge-shaped rod 503, the limiting spring 502 applies outward thrust to the wedge-shaped contact 504, and the limiting spring 502 is supported by the mounting plate 501.
Specifically, the limiting spring 502 may be installed in a manner that the limiting spring is sleeved on the wedge rod 503, and two ends of the limiting spring respectively abut against the wedge contact 504 and the installation plate 501; the limiting spring 502 may also be a spring plate, which is arranged in an arc shape, and both ends of the spring plate are fixed to the mounting plate 501 for contacting the wedge-shaped contact 504 by the arc-shaped door of the spring plate.
Further, referring to fig. 6, the sidewall of the irradiation plug body 1 is provided with a circular hole, the circular hole is matched with the wedge-shaped contact 504, and is used for extending the circular hole from the wedge-shaped contact 504, the sidewall of the irradiation plug body 1 is used as a sliding surface, and the wedge-shaped contact 504 moves in a sliding groove inside the irradiation sample hole.
Wherein, wedge contact 504 rear end is equipped with spacing unit, and its spacing unit can be the form of arch, limiting plate or stop screw, and its spacing unit size is greater than the circular port size for play limiting displacement by spacing unit at flexible in-process, prevent that wedge contact 504 accident from droing in the circular port.
After the wedge-shaped contact 504 moves to a designated position, an element in a sliding groove in the irradiation sample hole of the wedge-shaped contact 504 is abutted against the wedge-shaped contact 504, at the moment, the wedge-shaped contact 504 is compressed and contracted, the limiting spring 502 is tensioned, the wedge-shaped rod 503 moves backwards and is abutted against the second buckle 201, the second buckle 201 is separated from the first buckle 302, the operating rod 3 can move downwards, the operating rod 3 is provided with a hollow groove 303, the wedge-shaped rod 503 penetrates through the hollow groove 303 to abut against the second buckle 201, and the wedge-shaped rod 503 is prevented from directly colliding with the operating rod 3 through the hollow groove 303.
Based on the above embodiment, referring to fig. 6, another embodiment of the present invention is that the irradiation plug body 1 is provided with a pressure stabilizing mechanism 6 inside, and the pressure stabilizing mechanism 6 is used for applying a downward pressure to the operating rod 3 to move the self-locking triggering end 301 downward, so as to cooperate with the self-locking mechanism 4 to lock the irradiation plug body 1.
Wherein, the pressure stabilizing mechanism 6 can be an existing structure for applying a pulling force, so that after the second buckle 201 is separated from the first buckle 302, the pressure stabilizing mechanism 6 pulls the operating rod 3 to move downwards, and then the self-locking trigger end 301 contacts the self-locking mechanism 4, and triggers the self-locking mechanism 4 to lock the irradiation plug body 1.
Further, the pressure stabilizing mechanism 6 includes a spring stop 601 and a main spring 602, the spring stop 601 is fixedly mounted on the operation rod 3, and the spring stop 601 may be welded to the operation rod 3 or may be fixedly mounted on the operation rod 3 by a thread, so as to be detachable.
The two ends of the main spring 602 are respectively connected with the spring baffle 601 and the bottom of the upper end cover 2, and the main spring 602 is used for applying tension to the spring baffle 601; the main spring 602 is under tension in the uninstalled state and exerts a pulling force on the spring retainer 601.
The specific force provided by the main spring 602 in the initial state is to draw the operating rod 3 to the bottom of the irradiation plug body 1, and due to the interaction between the second buckle 201 and the first buckle 302, the operating rod 3 has good stability in the initial state, and after the second buckle 201 and the first buckle 302 are unlocked, the main spring 602 pulls the spring baffle 601, so that the self-locking trigger end 301 can be smoothly triggered to contact the self-locking mechanism 4.
Based on the above embodiment, another embodiment of the present invention is that at least two deep holes 202 are formed in the side wall of the upper end cap 2, a side hole 101 corresponding to the deep hole 202 is formed in the side wall of the irradiation plug body 1, wherein central axes of the side hole 101 and the deep hole 202 are matched with each other, the deep hole 202 corresponds to the side hole 101 in size, and a fixing pin or a smooth connecting rod is inserted into the side hole 101 and the deep hole 202, so that the upper end cap 2 is stably fixed in the inner cavity of the irradiation plug body 1, and an accidental rotation is avoided.
Based on the above embodiment, another embodiment of the present invention is that, referring to fig. 7, 8 and 9, an opening is provided at the lower part of the irradiation plug body 1, the self-locking mechanism 4 is installed in the opening, and the opening is a self-locking hole; the self-locking mechanism 4 comprises at least two self-locking blocks 401, a collision groove 402 is formed in each self-locking block 401, the self-locking trigger end 301 is a conical block, the edge of each conical block is in mutual contact with the collision groove 402 and used for applying thrust to the self-locking block 401 through the self-locking trigger end 301, the self-locking blocks 401 move out of the opening, and through locking in a physical form, the invisible influence of irradiation on an electronic element can be avoided, so that the safety of the device is higher.
After the self-locking block 401 extends out of the self-locking hole, the outer wall of the self-locking block 401 abuts against the inner wall of the irradiation sample hole to realize self-locking, and the perimeter of the edge of the self-locking block 401 extending out of the self-locking hole accounts for three quarters of the perimeter of the outer wall of the irradiation plug main body 1.
Based on the above embodiment, further, the self-locking mechanism 4 further includes a return spring 403, two ends of the return spring 403 are respectively connected to different self-locking blocks 401, and the self-locking blocks 401 are used for being mutually folded by the self-locking blocks 401, and the tapered block of the self-locking trigger end 301 extrudes the contact groove 402 of the self-locking block 401, so that the contact groove 402 drives the self-locking blocks 401 to extend outwards toward the self-locking hole after being stressed, and the contact with the inner wall of the irradiation sample hole is synchronously performed, and the second buckle 201 is mutually matched with the first buckle 302 on the operating rod 3 to realize clamping, thereby ensuring that the self-locking block 401 of the irradiation plug body 1 is retracted in the initial state.
Based on the above embodiment, further, referring to fig. 8, a boss 404 is disposed on one side of the self-locking block 401 close to the abutting groove 402, and the height of the boss 404 is greater than the height of the opening at the lower end of the irradiation plug main body 1, so that the boss 404 abuts against the irradiation plug main body 1 to limit the self-locking block 401.
One side of the self-locking block 401, which is close to the center, is provided with a step higher than the self-locking hole of the irradiation plug main body 1, so that the self-locking block 401 is prevented from being pressed by the self-locking trigger end 301 to impact away from the irradiation plug main body 1, and on the other hand, the normal resetting of the self-locking block 401 can be ensured.
Specifically, the opening of the irradiation plug main body 1 has a recessed portion, the boss 404 is located in the recessed portion, when the self-locking trigger end 301 contacts the contact groove 402 on the self-locking block 401, the self-locking block 401 gradually moves outwards, the boss 404 on the self-locking block 401 also moves along with the self-locking block, and finally the boss 404 contacts the edge of the recessed portion of the irradiation plug main body 1, so that the self-locking block is limited, and the self-locking block 401 is prevented from being pressed by the self-locking trigger end 301 and rushing away from the irradiation plug main body 1.
Based on the above embodiment, this embodiment is a specific operation embodiment, and a method for locking a hole plug of an irradiation sample includes the following steps:
the first step is to check before installation, and at first, the operating rod 3 is pulled upwards to confirm whether the first buckle 302 and the second buckle 201 are in mutual interference and are locked, and the self-locking mechanism 4 is checked to have reset elasticity.
Secondly, mounting, wherein the irradiation plug main body 1 is inserted into a sample channel of an irradiation sample monitoring tube; the wedge-shaped contact 504 of the wedge-shaped telescopic mechanism 5 is arranged, and a trigger end arranged in the irradiation sample monitoring tube corresponds to the wedge-shaped contact 504, so that the wedge-shaped contact 504 is collided and contracted at the trigger end.
Secondly, after installation, the locking process is performed synchronously, the wedge-shaped contact 504 is retracted inwards, the wedge-shaped rod 503 is pushed to abut against the second buckle 201, the second buckle 201 is moved backwards and separated from the first buckle 302, the operating rod 3 is pulled downwards by the pressure stabilizing mechanism 6, the self-locking trigger end 301 is inserted into the abutting groove 402 of the self-locking mechanism 4, and the self-locking block 401 extends out of the side wall of the irradiation plug body 1 and is locked in the irradiation sample monitor tube.
Because the irradiation sample is stored in the irradiation sample hole, the irradiation sample needs to be taken out periodically in the operation life of the equipment so as to monitor the influence of the irradiation on the material of the pressure container body and judge whether the irradiation sample can meet the operation requirement.
Generally, when the operation process needs to be detected, the operation rod 3 is pulled, the self-locking trigger end 301 is separated from the abutting groove 402, the self-locking block 401 is mutually folded by the return spring 403, the locking state of the irradiation plug body 1 is released, the irradiation plug body 1 is pulled out, the wedge-shaped contact 504 is pushed by the limit spring 502, the wedge-shaped rod 503 is separated from the second buckle 201, and the second buckle 201 moves forwards and is mutually clamped with the first buckle 302.
Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (8)
1. The utility model provides a spacing formula irradiation sample hole stopper, includes irradiation stopper main part (1), upper end cover (2) are installed to irradiation stopper main part (1) upper end, movable mounting has action bars (3), its characterized in that in upper end cover (2): the lower end of the irradiation plug main body (1) is provided with a self-locking mechanism (4), the lower end of the operating rod (3) is provided with a self-locking trigger end (301), and the middle part of the operating rod (3) is provided with a first buckle (302); the lower part of the upper end cover (2) is provided with a second buckle (201) for being locked with the first buckle (302) by the second buckle (201), and the lower part of the upper end cover (2) is also provided with a wedge-shaped telescopic mechanism (5); the irradiation plug main body (1) is locked in an irradiation sample hole of an irradiation sample monitoring tube by a self-locking mechanism (4); the self-locking mechanism (4) is triggered by the self-locking triggering end (301), is locked in the inner wall of the irradiation sample hole by the self-locking mechanism (4), and is used for controlling the mutual locking time of the second buckle (201) and the first buckle (302) by the wedge-shaped telescopic mechanism (5); the first buckle (302) is triangular, the outer side of the first buckle is provided with a bevel edge, and the second buckle (201) comprises an elastic plate and a triangle corresponding to the first buckle (302); the wedge-shaped telescopic mechanism (5) comprises a mounting plate (501), a limiting spring (502), a wedge-shaped rod (503) and a wedge-shaped contact (504), the mounting plate (501) is connected with the upper end cover (2), the wedge-shaped rod (503) is movably mounted on the mounting plate (501), the wedge-shaped contact (504) is arranged at the head end of the wedge-shaped rod (503), the tail end of the wedge-shaped rod (503) abuts against the second buckle (201), and two ends of the limiting spring (502) respectively abut against the mounting plate (501) and the wedge-shaped contact (504); irradiation stopper main part (1) lateral wall is equipped with the circular port, the circular port is identical with wedge contact (504), is used for stretching out the circular port by wedge contact (504), be equipped with on action bars (3) well hollow groove (303), well hollow groove (303) conflict second buckle (201) are passed in wedge pole (503).
2. The limit type irradiation sample hole plug according to claim 1, characterized in that: the irradiation plug body (1) is internally provided with a pressure stabilizing mechanism (6) for applying downward pressure to the operating rod (3) by the pressure stabilizing mechanism (6) so as to enable the self-locking trigger end (301) to move downwards and lock the irradiation plug body (1) by matching with the self-locking mechanism (4).
3. The limit type irradiation sample hole plug according to claim 2, characterized in that: the pressure stabilizing mechanism (6) comprises a spring baffle (601) and a main spring (602), the spring baffle (601) is fixedly installed on the operating rod (3), and two ends of the main spring (602) are respectively connected with the spring baffle (601) and the bottom of the upper end cover (2) and used for applying pulling force to the spring baffle (601) through the main spring (602).
4. The limit type irradiation sample hole plug according to claim 1, characterized in that: the side wall of the upper end cover (2) is at least provided with two deep holes (202), and the side wall of the irradiation plug main body (1) is provided with a side hole (101) corresponding to the deep hole (202).
5. The limit type irradiation sample hole plug according to claim 1, characterized in that: irradiation stopper main part (1) lower part is equipped with the opening, install in self-locking mechanism (4) in the opening, self-locking mechanism (4) are including at least two from locking piece (401), be equipped with conflict groove (402) on self-locking piece (401), auto-lock trigger end (301) are the toper piece, the edge and conflict groove (402) the mutual contact of toper piece for exert thrust to self-locking piece (401) by auto-lock trigger end (301), make self-locking piece (401) to move outside the opening.
6. The position-limited irradiation sample hole plug of claim 5, wherein: the self-locking mechanism (4) further comprises a return spring (403), and two ends of the return spring (403) are respectively connected with different self-locking blocks (401) and are used for being mutually folded by the self-locking blocks (401).
7. The position-limited irradiation sample hole plug of claim 5, wherein: be equipped with boss (404) on self-locking piece (401) is close to conflict groove (402) one side, boss (404) highly are greater than the opening height of irradiation stopper main part (1) lower extreme for conflict irradiation stopper main part (1) by boss (404) and spacing in order to realize self-locking piece (401).
8. An irradiation sample hole plug locking method is characterized in that: use of the radiation limited sample plug according to any one of claims 1 to 7, comprising the steps of:
A. checking before installation, namely firstly pulling the operating rod (3) upwards to confirm whether the first buckle (302) and the second buckle (201) are in mutual interference and are locked, and checking that the self-locking mechanism (4) has resetting elasticity;
B. installing, wherein the irradiation plug body (1) is inserted into a sample channel of an irradiation sample monitoring tube; the irradiation sample monitoring tube is internally provided with a triggering end corresponding to the wedge-shaped contact (504), so that the wedge-shaped contact (504) is abutted and contracted at the triggering end;
C. releasing, namely inwards contracting the wedge-shaped contact (504), pushing the wedge-shaped rod (503) to abut against the second buckle (201), enabling the second buckle (201) to move backwards and be separated from the first buckle (302), pulling the operating rod (3) downwards by the pressure stabilizing mechanism (6), inserting the self-locking trigger end (301) into an abutting groove (402) of the self-locking mechanism (4), enabling the self-locking block (401) to extend out of the side wall of the irradiation plug body (1), and locking the self-locking block in the irradiation sample supervisory tube;
D. taking out, pulling action bars (3) when needing to detect, auto-lock trigger end (301) break away from conflict groove (402), reset spring (403) make from locking piece (401) draw in each other, remove irradiation stopper main part (1) locking state, pull out irradiation stopper main part (1), spacing spring (502) promote wedge contact (504), make wedge rod (503) break away from second buckle (201), second buckle (201) move forward to with first buckle (302) block each other.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910567106.2A CN110265156B (en) | 2019-06-27 | 2019-06-27 | Limiting type irradiation sample hole plug and locking method |
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| CN201910567106.2A CN110265156B (en) | 2019-06-27 | 2019-06-27 | Limiting type irradiation sample hole plug and locking method |
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| CN110265156A CN110265156A (en) | 2019-09-20 |
| CN110265156B true CN110265156B (en) | 2020-06-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110783003B (en) * | 2019-10-18 | 2020-06-26 | 四川大学 | Wedge-shaped groove self-locking irradiation sample hole plug and implementation method thereof |
| CN110893037B (en) * | 2019-11-22 | 2021-10-26 | 歌尔科技有限公司 | Intelligent wrist-wearing equipment |
| CN113593738B (en) * | 2021-07-22 | 2023-12-01 | 中国核动力研究设计院 | Telescopic irradiation sample hole plug |
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| CN103410963A (en) * | 2013-07-23 | 2013-11-27 | 中国核动力研究设计院 | Ball cone irradiation sample stopple with self-locking pressurized water reactor |
| CN104343979A (en) * | 2013-07-23 | 2015-02-11 | 中国核动力研究设计院 | Pressurized water reactor wedge irradiation sample hole plug with self-locking function |
| CN108022664A (en) * | 2017-07-31 | 2018-05-11 | 中国核动力研究设计院 | Pipe generic transport container is supervised in a kind of reactor irradiation |
| CN109585043A (en) * | 2018-12-03 | 2019-04-05 | 四川大学 | Safe adjustable irradiation sample stopple and hanging basket flange |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4178208A (en) * | 1978-02-23 | 1979-12-11 | The United States Of America As Represented By The United States Department Of Energy | Self locking drive system for rotating plug of a nuclear reactor |
| US5295165A (en) * | 1993-02-25 | 1994-03-15 | Westinghouse Electric Corp. | Self-locking plug for plugging a hole defined by a surrounding structure |
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Patent Citations (4)
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|---|---|---|---|---|
| CN103410963A (en) * | 2013-07-23 | 2013-11-27 | 中国核动力研究设计院 | Ball cone irradiation sample stopple with self-locking pressurized water reactor |
| CN104343979A (en) * | 2013-07-23 | 2015-02-11 | 中国核动力研究设计院 | Pressurized water reactor wedge irradiation sample hole plug with self-locking function |
| CN108022664A (en) * | 2017-07-31 | 2018-05-11 | 中国核动力研究设计院 | Pipe generic transport container is supervised in a kind of reactor irradiation |
| CN109585043A (en) * | 2018-12-03 | 2019-04-05 | 四川大学 | Safe adjustable irradiation sample stopple and hanging basket flange |
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