CN202398575U - Cleaning tool for examining device for nuclear reactor rod cluster control assembly - Google Patents
Cleaning tool for examining device for nuclear reactor rod cluster control assembly Download PDFInfo
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- CN202398575U CN202398575U CN 201120536521 CN201120536521U CN202398575U CN 202398575 U CN202398575 U CN 202398575U CN 201120536521 CN201120536521 CN 201120536521 CN 201120536521 U CN201120536521 U CN 201120536521U CN 202398575 U CN202398575 U CN 202398575U
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- gas
- nuclear reactor
- cleaning
- connection handle
- disembarkation
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Abstract
The utility model belongs to the technical field of radioactive decontamination of equipment in nuclear power stations and particularly relates to a cleaning tool for an examining device for a nuclear reactor rod cluster control assembly. A connection plate is of a rectangle hollow cavity structure, a plurality of holes communicated with the rectangle hollow cavity are evenly distributed on one side surface of the connection plate, and two ashore air tube adapters communicated with the rectangle hollow cavity are symmetrically installed on the other side surface of the connection plate; a plurality of air holes are evenly distributed on cleaning rods which are of cylinder hollow cavity structures; a plurality of through holes are evenly distributed on a connection handle which is of a rectangle plate-like structure; a plurality of the cleaning rods are assembled into a cleaning rod group through the connection handle, the upper end of each of the cleaning rods is fixedly connected with one of the through holes of the connection handle, and the upper end of each of the cleaning rods is connected with one of the corresponding holes on the connection plate through air pipes; and an air source is connected with the two ashore air tube adapters through pipelines respectively, and a stop valve and a pressure regulating valve are sequentially arranged on the pipelines between the air source and the two ashore air tube adapters. The cleaning tool for the examining device for the nuclear reactor rod cluster control assembly is capable of effectively removing contaminants of the examining device and reducing the radioactive doses of the examining device.
Description
Technical field
The utility model belongs to nuclear power plant equipment radioactive decontamination technical field, is specifically related to a kind of nuclear reactor control cluster component inspection device cleaning means.
Background technology
Nuclear reactor control cluster assembly (RCCA) plays important effect in whole nuclear power station, it is mainly used in the shutdown when urgent of conditioned reaction heap power.Growth along with active time; Defectives such as swelling, wearing and tearing and crackle can appear in RCCA; Therefore need carry out inservice inspection to it; And, evaluate and test the speed and the trend of occurring wear, swelling, with life-span that prolongs RCCA as far as possible and the safety and economic operation of guaranteeing nuclear power station through to checking that repeatedly the data that obtain are analyzed, comparison.
Because control rod has very high radioactivity after operation, and after the nuclear fuel breakage, is easy at barred body surface contamination radioactive substance.When the RCCA cluster is implemented inspection, be that this cluster is inserted in one group of trepanning that has different probe sensors, down implement inspection during (or up) motion at cluster.A lot of hot dust are arranged because of the cluster surface is subsidiary; In cluster moved up and down process, the dust on cluster surface can be scraped by the guider on the trepanning and drop on the testing fixture, makes testing fixture after using up, have very strong radioactivity; Make that operating personnel can't be approaching; Even surpassed in some cases 250 millis uncommon/hour, if do not clean, can receive the restriction of water outlet dosage and cause the testing fixture can't water outlet; And can make operating personnel in follow-up loading and unloading, transportation and maintenance process, receive the radiation exposure of ultrahigh dose, it is extremely important therefore this testing fixture to be carried out decontamination.RCCA inservice inspection is normally carried out in cooling pond or spentnuclear fuel pond; Because the pond is to the specific (special) requirements of water quality; And the complexity of this body structure of RCCA testing fixture, the cleaning method of many routines is all infeasible, as scrub with brush, wiping, water flushing etc.; And can't clean, and because the too strong operating personnel of radiation can't be approaching to testing fixture inside; Again since the special construction of the detection probe on the testing fixture and the price of costliness extremely can not adopt cleaning method such as ultrasonic wave to clean, otherwise might damage detection probe.
What at present both at home and abroad the decontamination of radiocontamination equipment is adopted is methods such as wiping, flushing or vibration of ultrasonic wave decontamination, but does not also have a cover special-purpose RCCA testing fixture decontamination instrument of a cover to the characteristics exploitation of RCCA testing fixture.
Summary of the invention
The purpose of the utility model is to provide a kind of nuclear reactor control cluster component inspection device cleaning means, with the radioactive dosage of effective reduction testing fixture, reaches acceptable level.
For achieving the above object, the technical scheme that the utility model is taked is:
A kind of nuclear reactor control cluster component inspection device cleaning means, this instrument comprise source of the gas, stop valve, pressure regulator valve, some cleaning rods, connection handle, some tracheaes, connecting plate and two disembarkation gas-tpe fittings; Said connecting plate is the rectangular enclosure structure, and one of which is evenly equipped with several holes on the side, and each Kong Junyu rectangular enclosure connects, and is symmetrically installed with two disembarkation gas-tpe fittings on its another side, and the rectangular enclosure of disembarkation gas-tpe fitting and connecting plate connects; Said cleaning rod is the cylindrical cavity configuration, on cleaning rod, is evenly equipped with several pores; Said connection handle is the rectangular plate shape structure, is evenly equipped with several through holes on it, and is corresponding with the hole on the connecting plate; Some cleaning rods accumulate the cleaning rod group through connection handle, and insert in the through hole of connection handle the upper end of every cleaning rod, and the upper end of cleaning rod is connected fixing with connection handle; The upper end of every cleaning rod through on tracheae and the connecting plate accordingly the hole be connected; Said source of the gas is connected with two disembarkation gas-tpe fittings respectively through pipeline, on the pipeline between source of the gas and two the disembarkation gas-tpe fittings, is disposed with stop valve and pressure regulator valve.
Said cleaning rod is formed by connecting lower end, barred body and upper end from bottom to up successively; Be evenly equipped with several pores on the said barred body; Said upper end inserts in the through hole of connection handle, and upper end is connected fixing with connection handle; Said upper end through on tracheae and the connecting plate accordingly the hole be connected.
The two ends of said tracheae, and the junction, hole of the upper end of tracheae and cleaning rod, connecting plate is respectively arranged with gas-tpe fitting.
Said lower end be shaped as bullet-shaped.
Said upper end is connected fixing with connection handle through screw thread.
Pipeline between said source of the gas and two the disembarkation gas-tpe fittings is provided with " one becomes a two " gas-separating valve; Said gas-separating valve will be divided into two-way and be connected with two disembarkation gas-tpe fittings respectively by the pipeline that source of the gas is drawn; Be disposed with stop valve and pressure regulator valve on the pipeline between said source of the gas and the gas-separating valve.
The diameter of said cleaning rod is less than the diameter of control rod.
The center that said connecting plate is equipped with the side of disembarkation gas-tpe fitting is equipped with connector, its structure and outside lifting device coupling.
The beneficial effect that the utility model is obtained is:
The said nuclear reactor control cluster component inspection of the utility model device cleaning means can be disposable the insertion testing fixture inner; Effectively remove the pollutant of testing fixture; Reduce its radioactive dosage; Thereby reduce equipment inspection attendant's radioactive dose, improve the service efficiency and the flexibility of testing fixture.Specific as follows:
(1) through cleaning rod being inserted testing fixture inside, in cleaning rod, feed gas, gas is under the inside and outside differential pressure effect; Form bubble through the pore on the cleaning rod; Produce vibration, bubble directly impacts the detection probe of testing fixture and the pollution face of centralising device, can effectively clean the pollutant of these component surfaces; Reduce the radiological dose of testing fixture, have clean effect preferably;
(2) during decontamination, will be inserted by the cleaning rod group that some cleaning rods are formed and implement decontamination in the testing fixture and clean, once plug just can be accomplished the detection probe of all testing fixtures and the decontamination of centralising device thereof, has the efficient of higher decontamination;
(3) lower end of cleaning rod bullet-shaped can guide cleaning rod to get into the detection probe and the centralising device of testing fixture smoothly.
Description of drawings
Fig. 1 is the said nuclear reactor control cluster component inspection of the utility model device cleaning means overall structure figure;
Fig. 2 is the local connection layout of the said nuclear reactor control cluster component inspection of the utility model device cleaning means;
Fig. 3 is the connecting plate structure chart of the said nuclear reactor control cluster component inspection of the utility model device cleaning means;
Fig. 4 is the cleaning rod structure chart of the said nuclear reactor control cluster component inspection of the utility model device cleaning means;
Fig. 5 is the air hole structure figure on the cleaning rod of the said nuclear reactor control cluster component inspection of the utility model device cleaning means;
Fig. 6 is the cleaning rod working state schematic representation of the said nuclear reactor control cluster component inspection of the utility model device cleaning means;
Among the figure: 1, source of the gas; 2, stop valve; 3, pressure regulator valve; 4, gas-tpe fitting; 5, cleaning rod; 6, connection handle; 7, tracheae; 8, connecting plate; 9, disembarkation gas-tpe fitting; 10, connector; 11, lower end; 12, barred body; 13, upper end; 14, pore; 15, detection probe; 16, probe retainer.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Like Fig. 1, shown in Figure 2, the said nuclear reactor control cluster component inspection of the utility model device cleaning means comprises source of the gas 1, stop valve 2, pressure regulator valve 3, gas-tpe fitting 4, some cleaning rods 5, connection handle 6, some tracheaes 7, connecting plate 8, two disembarkation gas-tpe fittings 9 and connectors 10; As shown in Figure 3; Said connecting plate 8 is the rectangular enclosure structure; One of which is evenly equipped with several holes on the side, and each Kong Junyu rectangular enclosure connects, and is symmetrically installed with two disembarkation gas-tpe fittings 9 on its another side; Disembarkation gas-tpe fitting 9 connects with the rectangular enclosure of connecting plate 8, and the center of this side also is equipped with connector 10; As shown in Figure 4, said cleaning rod 5 is the cylindrical cavity configuration, is formed by connecting lower end 11, barred body 12 and the upper end 13 of bullet-shaped successively from bottom to up; As shown in Figure 5, on barred body 12, be evenly equipped with several pores 14; Said connection handle 6 is the rectangular plate shape structure, is evenly equipped with several through holes on it, and is corresponding with the hole on the connecting plate 8; Some cleaning rods 5 accumulate the cleaning rod group through connection handle 6, and the upper end 13 of every cleaning rod 5 inserts in the through hole of connection handle 6, and upper end 13 is connected fixing with connection handle 6 through screw thread; The upper end 13 of every cleaning rod 5 through on tracheae 7 and the connecting plate 8 accordingly the hole be connected; At the two ends of tracheae 7, and tracheae 7 is respectively arranged with gas-tpe fitting 4 with the upper end 13 of cleaning rod 5, the junction, hole of connecting plate 8; Said source of the gas 1 is connected with two disembarkation gas-tpe fittings 9 respectively through pipeline; And the pipeline between source of the gas 1 and two the disembarkation gas-tpe fittings 9 is provided with " one becomes a two " gas-separating valve, and this gas-separating valve will be divided into two-way and be connected with two disembarkation gas-tpe fittings 9 respectively by the pipeline that source of the gas 1 is drawn; On the pipeline between source of the gas 1 and the gas-separating valve, be disposed with stop valve 2 and pressure regulator valve 3.
The compressed air of needs when said source of the gas 1 is used to cleaning means work is provided; Said stop valve 2 is used for opening or closing gas piping; Said pressure regulator valve 3 is used for regulating the pipeline gas pressure; The cleaning rod group of being made up of some cleaning rods 5 is the core component of a whole set of cleaning means; Directly be used to clean the detection probe and the centralising device of testing fixture; Its lower end 11 is used to guide cleaning rod 5 to get into the detection probe and the centralising device of corresponding testing fixture; Its upper end 13 is used for the location of cleaning rod 5 and introduces compressed air, and the diameter of cleaning rod 5 is slightly less than the diameter of control rod; Said connector 10 is as the interface of this cleaning means and outside lifting device, and its structure and outside lifting device mate.
As shown in Figure 6, after the RCCA site inspection finishes, directly grasp this cleaning means with the RCCA gripping tool; Lower end 11 through each cleaning rod 5 is slowly put into each cleaning rod 5 and testing fixture centering in the detection probe and centralising device of corresponding testing fixture, after the cleaning rod group puts in place with the cleaning rod group after the centering; Open stop valve 2; Source of the gas 1 begins to feed compressed air, and compressed air gets into each cleaning rod 5 at last from source of the gas 1 flow through successively stop valve 2, pressure regulator valve 3, gas-separating valve, two disembarkation gas-tpe fittings 9, the rectangular enclosure of connecting plate 8, each tracheae 7; Compressed air in the cleaning rod 5 is under the inside and outside differential pressure effect; Form bubble through the pore on the cleaning rod 5 14, produce vibration, bubble directly impacts the detection probe of testing fixture and the pollution face of centralising device; Can effectively clean the pollutant of these component surfaces, reduce the radioactive dosage of testing fixture.
The said nuclear reactor control cluster component inspection of the utility model device cleaning means carries out its structure also can be used to clean other similar nuclear island equipment inspection device after the accommodation.
Claims (8)
1. nuclear reactor control cluster component inspection device cleaning means, it is characterized in that: this instrument comprises source of the gas (1), stop valve (2), pressure regulator valve (3), some cleaning rods (5), connection handle (6), some tracheaes (7), connecting plate (8) and two disembarkation gas-tpe fittings (9); Said connecting plate (8) is the rectangular enclosure structure; One of which is evenly equipped with several holes on the side; Each Kong Junyu rectangular enclosure connects, and is symmetrically installed with two disembarkation gas-tpe fittings (9) on its another side, and disembarkation gas-tpe fitting (9) connects with the rectangular enclosure of connecting plate (8); Said cleaning rod (5) is the cylindrical cavity configuration, on cleaning rod (5), is evenly equipped with several pores (14); Said connection handle (6) is the rectangular plate shape structure, is evenly equipped with several through holes on it, and is corresponding with the hole on the connecting plate (8); Some cleaning rods (5) accumulate the cleaning rod group through connection handle (6), and insert in the through hole of connection handle (6) upper end of every cleaning rod (5), and the upper end of cleaning rod (5) is connected fixing with connection handle (6); The upper end of every cleaning rod (5) is gone up corresponding hole through tracheae (7) and connecting plate (8) and is connected; Said source of the gas (1) is connected with two disembarkation gas-tpe fittings (9) respectively through pipeline, on the pipeline between source of the gas (1) and two the disembarkation gas-tpe fittings (9), is disposed with stop valve (2) and pressure regulator valve (3).
2. nuclear reactor control cluster component inspection device cleaning means according to claim 1 is characterized in that: said cleaning rod (5) is formed by connecting lower end (11), barred body (12) and upper end (13) from bottom to up successively; Be evenly equipped with several pores (14) on the said barred body (12); Said upper end (13) inserts in the through hole of connection handle (6), and upper end (13) is connected fixing with connection handle (6); Said upper end (13) is gone up corresponding hole through tracheae (7) and connecting plate (8) and is connected.
3. nuclear reactor control cluster component inspection device cleaning means according to claim 2; It is characterized in that: the two ends of said tracheae (7), and tracheae (7) is respectively arranged with gas-tpe fitting (4) with the upper end (13) of cleaning rod (5), the junction, hole of connecting plate (8).
4. nuclear reactor control cluster component inspection device cleaning means according to claim 2 is characterized in that: said lower end (11) be shaped as bullet-shaped.
5. nuclear reactor control cluster component inspection device cleaning means according to claim 2 is characterized in that: said upper end (13) is connected fixing with connection handle (6) through screw thread.
6. nuclear reactor control cluster component inspection device cleaning means according to claim 1 is characterized in that: the pipeline between said source of the gas (1) and two the disembarkation gas-tpe fittings (9) is provided with " one becomes a two " gas-separating valve; Said gas-separating valve will be divided into two-way and be connected with two disembarkation gas-tpe fittings (9) respectively by the pipeline that draw source of the gas (1); Be disposed with stop valve (2) and pressure regulator valve (3) on the pipeline between said source of the gas (1) and the gas-separating valve.
7. nuclear reactor control cluster component inspection device cleaning means according to claim 1, it is characterized in that: the diameter of said cleaning rod (5) is less than the diameter of control rod.
8. nuclear reactor control cluster component inspection device cleaning means according to claim 1 is characterized in that: the center that said connecting plate (8) is equipped with the side of disembarkation gas-tpe fitting (9) is equipped with connector (10), its structure and outside lifting device coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120536521 CN202398575U (en) | 2011-12-19 | 2011-12-19 | Cleaning tool for examining device for nuclear reactor rod cluster control assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120536521 CN202398575U (en) | 2011-12-19 | 2011-12-19 | Cleaning tool for examining device for nuclear reactor rod cluster control assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202398575U true CN202398575U (en) | 2012-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120536521 Withdrawn - After Issue CN202398575U (en) | 2011-12-19 | 2011-12-19 | Cleaning tool for examining device for nuclear reactor rod cluster control assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202398575U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157627A (en) * | 2011-12-19 | 2013-06-19 | 核动力运行研究所 | Cleaning tool for detection device for nuclear reactor rod cluster control assembly (RCCA) |
-
2011
- 2011-12-19 CN CN 201120536521 patent/CN202398575U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157627A (en) * | 2011-12-19 | 2013-06-19 | 核动力运行研究所 | Cleaning tool for detection device for nuclear reactor rod cluster control assembly (RCCA) |
| CN103157627B (en) * | 2011-12-19 | 2015-03-04 | 核动力运行研究所 | Cleaning tool for detection device for nuclear reactor rod cluster control assembly (RCCA) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120829 Effective date of abandoning: 20150304 |
|
| RGAV | Abandon patent right to avoid regrant |