CN212990695U - Nuclear power plant reactor lower part component foreign matter sweeps investigation device and system on line - Google Patents
Nuclear power plant reactor lower part component foreign matter sweeps investigation device and system on line Download PDFInfo
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- CN212990695U CN212990695U CN202021887231.6U CN202021887231U CN212990695U CN 212990695 U CN212990695 U CN 212990695U CN 202021887231 U CN202021887231 U CN 202021887231U CN 212990695 U CN212990695 U CN 212990695U
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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 utility model discloses a nuclear power plant reactor lower part component foreign matter sweeps investigation device and system on line, is applied to on the lower part component, should sweep the investigation device on line and include washing unit, the flushing line of being connected with washing unit, with the lower grid plate positioner of flushing line end connection, the underwater operation unit of being connected with lower grid plate positioner, and be used for making a video recording the first underwater camera device of location to lower grid plate hole of lower part component reactor core; the underwater operation unit is used for operating the lower grid plate positioning device to be positioned on the hole of the lower grid plate; the flushing device is connected with an SED water source, and purges foreign matters on the corresponding support plate below the holes of the lower grid plate through the flushing pipeline, so that the flushing effect is good, the foreign matters, sediments and dust on the support plate can be effectively cleaned, and the technical problem of developing inspection work in the overhaul process is solved.
Description
Technical Field
The utility model relates to a nuclear power plant's reactor technical field especially relates to a nuclear power plant's reactor lower part component foreign matter sweeps investigation device and system on line.
Background
Foreign matters such as deposits and dust on a core supporting plate are generally present in a conventional lower component of a nuclear power plant reactor, but inspection work cannot be performed due to the strong radioactivity of components below a grid plate under a core of the lower component.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in that, to prior art's defect, a nuclear power plant's reactor lower part component foreign matter sweeps investigation device and system on line is provided.
The utility model provides a technical scheme that its technical problem adopted is: the device for online purging and checking the foreign matters of the lower component of the nuclear power plant reactor is applied to the lower component and comprises a flushing device, a flushing pipeline connected with the flushing device, a lower grid plate positioning device connected with the tail end of the flushing pipeline, an underwater operation unit connected with the lower grid plate positioning device and a first underwater camera device for shooting and positioning a lower grid plate hole of a reactor core of the lower component;
the underwater operation unit is used for operating the lower grid plate positioning device to be positioned on the holes of the lower grid plate; the flushing device is connected with an SED water source, and foreign matters on the corresponding support plate below the holes of the lower grid plate are swept through the flushing pipeline.
Preferably, in the nuclear power plant reactor lower part component foreign matter online purging and inspecting device of the present invention, the lower grid plate positioning device includes: the device comprises an insertion part for inserting into a lower grid plate hole, an abutting part for abutting against the upper end surface of the lower grid plate when the insertion part is inserted into the lower grid plate hole, and a flushing channel which penetrates through the insertion part and the abutting part and is connected with the tail end of a flushing pipeline;
the underwater operation unit is detachably or fixedly connected with the abutting part.
Preferably, in the nuclear power plant reactor lower part component foreign matter online purging and inspecting device, the outer diameter of the insertion part is slightly smaller than the inner diameter of the lower grid plate hole.
Preferably, in the device for online purging and examining of foreign matters in the lower component of the nuclear power plant reactor, the abutting part is further provided with a connecting hole; the lower grid plate positioning device further comprises a connecting piece which is respectively matched and connected with the underwater operation unit and the connecting hole.
Preferably, in the device for online purging and examining of foreign matters in the lower component of the nuclear power plant reactor, the connecting piece is respectively connected with the underwater operation unit and the connecting hole through threads;
and a key groove is formed in the center of at least one connecting end of the connecting piece, is matched and connected with the underwater operation unit and/or a key in the connecting hole and is used for guiding threaded connection.
Preferably, in the nuclear power plant reactor lower part component foreign matter on-line purging and inspecting device, still be equipped with on the connecting piece and prevent the foreign matter hole, be used for with the connecting piece be in the operating unit under water or on the butt portion.
Preferably, nuclear power plant's reactor lower part component foreign matter sweeps inspection device on line in, still include the second of resistant radiation and make a video recording under water camera device, its hole size that is less than grid plate down for to the reactor core under the space between grid plate to the bearing plate carry out the foreign matter inspection and record a video.
Preferably, nuclear power plant's reactor lower part component foreign matter sweep the investigation device on line in, washing unit is high-pressure washing unit, the flushing line is high-pressure flushing line.
Preferably, in the online purging and inspecting device for foreign matters in the lower component of the nuclear power plant reactor, the online purging and inspecting device further comprises a third underwater camera device for shooting the component below the lower component reactor core support plate.
The utility model discloses a nuclear power plant's reactor lower part component foreign matter sweeps investigation system on line has still been constructed, including being full of the SED water source and being used for the component pond of holding reactor lower part component and above-mentioned arbitrary nuclear power plant's reactor lower part component foreign matter sweep the investigation device on line.
Through implementing the utility model discloses, following beneficial effect has:
the utility model provides a lower part component core lower part below grid plate because strong radioactivity, camera can not reach the scheduling problem, wash effectually, can effectively clear up foreign matter, deposit and dust on the bearing plate, stop the possibility that lower part component persists the foreign matter from the root, solved the technological problem of developing inspection work in the overhaul process.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a composition intention of the foreign matter on-line purging and inspecting device for the lower component of the nuclear power plant reactor of the utility model;
FIG. 2 is a schematic structural view of the lower grid plate positioning device of the present invention;
fig. 3 is a schematic structural diagram of the connector of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions and positional relationships indicated by "upper" and "lower" are configured and operated in specific directions based on the directions and positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate that the device or element indicated must have a specific direction, and thus, should not be construed as limiting the present invention.
First embodiment, as shown in fig. 1, the utility model discloses a nuclear power plant reactor lower part component foreign matter sweeps inspection device on line has been constructed, is applied to on the lower part component, and this lower part component includes grid plate under the reactor core, has a plurality of holes on the grid plate under the reactor core, and it has the reactor core bearing plate to correspond below the grid plate hole down.
The online purging and inspecting device comprises a flushing device 1, a flushing pipeline 2 connected with the flushing device 1, a lower grid plate positioning device 4 connected with the tail end of the flushing pipeline 2, an underwater operation unit 3 connected with the lower grid plate positioning device 4, and a first underwater camera device used for shooting and positioning a lower grid plate hole of a reactor core of a lower component.
The underwater operation unit 3 is used for operating the lower grid plate positioning device 4 to be positioned on the holes of the lower grid plate; the flushing device 1 is connected with an SED water source and purges foreign matters on the corresponding support plate below the holes of the lower grid plate through the flushing pipeline 2. Wherein, it is to be said that the SED water source is deoxygenated and demineralized water.
Specifically, washing unit 1 is connected power and SED water source, and washing unit 1 is adjustable high pressure washing unit 1 who washes water pressure, for example high pressure washing car, high-pressure squirt, and flushing line 2 is high pressure flushing line 2 also. The online purging and checking device of the embodiment utilizes the cleaning principle of the high-pressure flushing device 1, realizes accurate positioning through the lower grid plate positioning device 4 and the first underwater camera device, and operates the high-pressure flushing device 1 to purge and clean foreign matters and sediments on the corresponding support plate below the lower grid plate hole through the high-pressure flushing pipeline 2.
As shown in fig. 2, the lower grid plate positioning device 4 has the characteristics of fast and accurate positioning, including: an insertion part 41 for insertion into the lower grid plate hole, an abutment part 42 for abutment with the upper end face of the lower grid plate when the insertion part 41 is inserted into the lower grid plate hole, and a flushing channel 43 passing through the insertion part 41 and the abutment part 42 and connected to the distal end of the flushing pipe 2. The lower grid plate positioning device 4 is designed according to the size of the lower grid plate hole, so that the insertion part 41 is cylindrical, the outer diameter of the insertion part is slightly smaller than the inner diameter of the lower grid plate hole, and the insertion part can be tightly attached to the side wall of the lower grid plate hole and inserted into the lower grid plate hole. The abutting portion 42 is disk-shaped and has an outer diameter larger than the inner diameter of the lower grid plate hole, so that the lower end surface of the abutting portion 42 abuts against the upper end surface of the lower grid plate and is fixed.
As shown in fig. 1, the underwater operation unit 3 is detachably or fixedly connected to the abutment 42. The underwater operation unit 3 preferably operates a long rod, so that the risk of external irradiation of personnel can be reduced, and the collective irradiation dose of the personnel is lower. In some embodiments, as shown in fig. 2, the abutment 42 is further provided with a connection hole 44, and the lower grid plate positioning device 4 further comprises a connection member 5 for mating connection with the underwater operating unit 3 and the connection hole 44, respectively, as shown in fig. 3. The first end and the second end of the connecting piece 5 are respectively provided with an external thread, the underwater operation unit 3 is an operation long rod with an internal thread, the inner wall of the connecting hole 44 is also provided with a thread, and the connecting piece 5 is respectively in threaded connection with the underwater operation unit 3 and the connecting hole 44. And, a key groove 51 is provided at the center of at least one connection end of the connection member 5 to be coupled with a key in the underwater operation unit 3 and/or the connection hole 44 for guiding the screw connection. In other embodiments, the connector 5 can be connected to the underwater operating unit 3 and the connection hole 44 by clipping.
In order to prevent the connector 5 from falling, the connector 5 is further provided with a foreign object prevention hole 52 for fastening the connector 5 to the underwater operation unit 3 or the abutting portion 42, thereby fundamentally preventing foreign objects.
The first underwater camera device can be fixedly arranged above the lower grid plate through the rod and connected with an external display unit, when the underwater operation unit 3 operates the lower grid plate positioning device 4, shooting can be carried out through the first underwater camera device, an operator can see the operation condition on the external display unit, so that the lower grid plate positioning device 4 is accurately positioned on the lower grid plate hole, and then the high-pressure flushing device 1 is operated to sweep and clean foreign matters and sediments on the corresponding support plate below the lower grid plate hole through the high-pressure flushing pipeline 2. In some embodiments, the first underwater camera is an underwater television.
The online purging and inspecting device further comprises a second underwater camera device with high intensity and radiation resistance, and can be used for comprehensively inspecting foreign matters of the lower component in cooperation with the first underwater camera device. The size of the grid plate is smaller than that of the hole of the lower grid plate, and the grid plate is used for detecting foreign matters in the space between the lower grid plate and the support plate of the reactor core and recording videos. In some embodiments, the second underwater camera device utilizes the advantages of high video resolution, wide reachable area, high bearing pressure, small camera and the like of the radiation-resistant endoscope, is matched with the first underwater camera device to perform accurate positioning, can be bound through the rod and extend into the hole of the lower grid plate, and carries out foreign matter investigation work aiming at the inaccessible area of the lower component.
In addition, the online purging and inspecting device further comprises a third underwater imaging device arranged outside the lower component in order to inspect and record the foreign matters on the component below the core support plate. The third underwater imaging device is an underwater television, and can inspect and record foreign objects on components below the core support plate from the directions of 0 °/90 °/180 °/270 °.
The second embodiment, on the basis of the first embodiment, the utility model discloses a nuclear power plant's reactor lower part component foreign matter sweeps investigation system on line has still been constructed, including being full of the SED water source and being used for holding the component pond of reactor lower part component and first embodiment the nuclear power plant's reactor lower part component foreign matter sweep investigation device on line. And after the component pool is full of water, lifting the lower component away to the component pool, and carrying out foreign matter examination, blowing and treatment on the lower component in the component pool.
Specifically, the purge process of the lower member support plate is as follows:
(1) a light gun and an underwater lamp are thrown into the component pool, and a light source meets the requirement of field inspection;
(2) connecting the high-pressure washing vehicle with an SED water source;
(3) connecting the lower grid plate positioning device 4 with the long rod and the high-pressure flushing pipeline 2;
(4) putting a first underwater camera device into the lower in-pile component for adjustment and focusing;
(5) mounting the lower grid plate positioning device 4 to the position where the first underwater camera device is positioned;
(6) connecting a washing vehicle power supply, turning on a washing vehicle switch, and adjusting the pressure of the washing vehicle to 50 bar;
(7) pressing a starting button of a washing vehicle to wash and sweep sediments of a corresponding support plate below the holes of the lower grid plate;
(8) and washing and purging the sediments of the lower supporting plate in all the lower grid plate holes in sequence, and carrying out real-time monitoring and video recording by using a second underwater camera device.
The lower component foreign matter investigation process is as follows:
(1) the light gun and the underwater lamp are thrown into the component pool, and the light source meets the requirements of field inspection;
(2) a first underwater camera device is placed below the lower grid plate to carry out inspection hole positioning and video recording;
(3) using a second underwater camera device which is resistant to radiation shooting to inspect and record foreign matters in the space between the grid plate under the reactor core and the supporting plate of the lower component according to the inspection requirements, and recording the inspection result
(4) And (3) respectively carrying out foreign matter inspection on the components below the reactor core supporting plate from the directions of 0 DEG/90 DEG/180 DEG/270 DEG by using a third underwater camera, recording images, and recording inspection results.
It should be noted that the purging and the checking are not interfered with each other, and can be combined at will, and are not described herein again.
Through implementing the utility model discloses, following beneficial effect has:
the utility model provides a lower part component core lower part below grid plate because strong radioactivity, camera can not reach the scheduling problem, wash effectually, can effectively clear up foreign matter, deposit and dust on the bearing plate, stop the possibility that lower part component persists the foreign matter from the root, solved the technological problem of developing inspection work in the overhaul process.
It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. An online purging and checking device for foreign matters of a lower component of a reactor of a nuclear power plant is applied to the lower component, and is characterized by comprising a flushing device (1), a flushing pipeline (2) connected with the flushing device (1), a lower grid plate positioning device (4) connected with the tail end of the flushing pipeline (2), an underwater operation unit (3) connected with the lower grid plate positioning device (4), and a first underwater camera device for shooting and positioning a lower grid plate hole of a reactor core of the lower component;
the underwater operation unit (3) is used for operating the lower grid plate positioning device (4) to be positioned on the hole of the lower grid plate; the flushing device (1) is connected with an SED water source, and foreign matters on the corresponding support plate below the holes of the lower grid plate are swept through the flushing pipeline (2).
2. The on-line purging and inspecting device for foreign matter of lower nuclear power plant reactor component according to claim 1, wherein the lower grid plate positioning device (4) includes: the device comprises an insertion part (41) used for being inserted into a lower grid plate hole, an abutting part (42) used for abutting against the upper end surface of the lower grid plate when the insertion part (41) is inserted into the lower grid plate hole, and a flushing channel (43) which penetrates through the insertion part (41) and the abutting part (42) and is connected with the tail end of a flushing pipeline (2);
the underwater operation unit (3) is detachably or fixedly connected with the abutting part (42).
3. The online purging and checking device for foreign matters in a lower component of a nuclear power plant reactor as claimed in claim 2, wherein the outer diameter of the insertion portion (41) is slightly smaller than the inner diameter of the hole of the lower grid plate.
4. The online purging and checking device for foreign matters in the lower part of the nuclear power plant reactor according to claim 2, wherein the abutting part (42) is further provided with a connecting hole (44); the lower grid plate positioning device (4) further comprises a connecting piece (5) which is respectively matched and connected with the underwater operation unit (3) and the connecting hole (44).
5. The online purging and checking device for foreign matters in the lower nuclear power plant reactor component according to claim 4, wherein the connecting piece (5) is respectively connected with the underwater operation unit (3) and the connecting hole (44) through threads;
a key groove (51) is arranged in the center of at least one connecting end of the connecting piece (5) and is matched and connected with the key in the underwater operation unit (3) and/or the connecting hole (44) for guiding threaded connection.
6. The online purging and inspecting device for foreign matters in the lower part of the nuclear power plant reactor according to claim 4, wherein the connecting piece (5) is further provided with a foreign matter preventing hole (52) for tying the connecting piece (5) to the underwater operation unit (3) or the abutting part (42).
7. The device for online purging and checking of foreign matters in the lower component of the nuclear power plant reactor as claimed in claim 1, further comprising a second radiation-resistant underwater camera device, the size of which is smaller than that of the hole of the lower grid plate, and the second radiation-resistant underwater camera device is used for checking and videotaping the space between the lower grid plate and the support plate of the reactor core for the foreign matters.
8. The online purging and checking device for foreign matters in the lower part of the nuclear power plant reactor according to claim 1, wherein the flushing device (1) is a high-pressure flushing device (1), and the flushing pipeline (2) is a high-pressure flushing pipeline (2).
9. The online purging and inspecting device for foreign matters in the lower part of the nuclear power plant reactor according to claim 1, further comprising a third underwater imaging device for imaging the part below the lower part core support plate.
10. An online purging and inspecting system for foreign matters in a reactor lower part of a nuclear power plant, which is characterized by comprising a component pool filled with an SED water source and used for accommodating the reactor lower part and the online purging and inspecting device for the foreign matters in the reactor lower part of the nuclear power plant as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021887231.6U CN212990695U (en) | 2020-09-02 | 2020-09-02 | Nuclear power plant reactor lower part component foreign matter sweeps investigation device and system on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021887231.6U CN212990695U (en) | 2020-09-02 | 2020-09-02 | Nuclear power plant reactor lower part component foreign matter sweeps investigation device and system on line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212990695U true CN212990695U (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021887231.6U Active CN212990695U (en) | 2020-09-02 | 2020-09-02 | Nuclear power plant reactor lower part component foreign matter sweeps investigation device and system on line |
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| CN (1) | CN212990695U (en) |
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- 2020-09-02 CN CN202021887231.6U patent/CN212990695U/en active Active
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