CN109622463B - Double-layer containment inner shell cleaning device - Google Patents
Double-layer containment inner shell cleaning device Download PDFInfo
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- CN109622463B CN109622463B CN201811390927.5A CN201811390927A CN109622463B CN 109622463 B CN109622463 B CN 109622463B CN 201811390927 A CN201811390927 A CN 201811390927A CN 109622463 B CN109622463 B CN 109622463B
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- rail
- spray head
- cleaning device
- base
- nozzle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention belongs to the technical field of nuclear equipment maintenance, and relates to a cleaning device for an inner shell of a double-layer containment. The cleaning device comprises a spray head circular rail, a spray head circular rail base, a spray head, a telescopic assembly, a circular rail guide rail and a water delivery main pipe, wherein the spray head circular rail is arranged on the spray head circular rail base and can rotate along the circumferential direction of the spray head circular rail base; the nozzle base is used for mounting the nozzle and can adjust the angle of the nozzle so as to adjust the water spraying angle of the nozzle; the annular rail guide rail is used for conveying the spray head annular rail to a specified position; the water delivery main pipe penetrates into the spray head ring rail and is used for conveying external water to the spray head. By using the cleaning device for the inner shell of the double-layer containment vessel, the inner shell of the double-layer containment vessel can be cleaned by the cleaning device during maintenance of the double-layer containment vessel, so that dust and dirt on the surface of the inner shell are removed.
Description
Technical Field
The invention belongs to the technical field of nuclear equipment maintenance, and relates to a cleaning device for an inner shell of a double-layer containment.
Background
The containment vessel is used as a third-layer structure for shielding radioactive substances in a nuclear power plant, and the radioactive substances can be contained in the containment vessel under the accident condition, so that the integrity of the containment vessel is guaranteed to be very important. The third generation nuclear power adopts various designs for protecting the integrity of the containment vessel, wherein the main reactor type adopts the design of a double-layer containment vessel. The EPR is a double-layer containment, and the outer shell and the inner shell are prestressed reinforced concrete with the thickness of 1.3 m; the WWER is also a double-layer containment vessel, the outer shell is of a reinforced concrete structure and is 0.6m thick, and the inner shell is of prestressed reinforced concrete and is 1.2m thick; the ACP1000 also adopts a double-layer containment structure, the shell structure is made of reinforced concrete, the inner shell is made of prestressed reinforced concrete, and the inner side of the inner shell is provided with a layer of steel lining. The outer shell of the three reactor type double-layer containment vessels has the main function of preventing collision, and the inner shell of the three reactor type double-layer containment vessels has the main function of bearing pressure. In addition, in the dual-layer containment used in the American AP600 and AP1000 series, heat in the containment is taken away by covering and evaporating a water film at the early stage, and heat in the containment is taken away by natural convection of air at the later stage, so that the temperature and the pressure in the containment are ensured to be below design values, and the integrity of the containment is ensured. The CAP1400 design of China also adopts a double-layer containment structure, the function and the effect of the double-layer containment structure are close to those of the ACP1000, and an inner shell is used as a boundary for heat exchange.
In case of serious accident, for the heat exchange type double-layer containment, the inner shell is used as the boundary between the heat exchange in the shell and the heat exchange in the environment, and the heat conduction performance is very important. If the outer wall surface of the inner shell is polluted, heat exchange and covering of a liquid film can be influenced to a certain degree, so that heat conduction is influenced, and the safety margin is reduced.
As for the cleaning of the narrow slit containment, there are a few prior art reports, such as US5,316,518(Clean containment room construction), US7,904,145(Clean margin assessment tool), US4,039,101(Clean cover for easy-open containment station), CN03805116.8 (inner wall surface operation device of tower tank and inner wall surface operation method using the operation device 2014201425), cn10666650. x (object slit cleaning brush), CN201610280609.8 (a cleaning brush suitable for various types of wall surfaces), CN201610529661.2 (narrow slit wet-mopping robot), CN201610841080.2 (an automatic cleaning robot and its charging system), CN200820220034.1 (narrow slit dust cleaner), CN200920268619.5 (multifunctional cleaning brush), and CN201220354591.9 (brush for cleaning various dead space slits). However, these prior art techniques are not suitable for or do not consider cleaning of the inner shell of the double containment.
Disclosure of Invention
The invention aims to provide a double-layer containment inner shell cleaning device, which can be used for cleaning a double-layer containment inner shell during maintenance of a double-layer containment so as to remove dust and dirt on the surface of the inner shell.
In order to achieve the purpose, in a basic embodiment, the invention provides a cleaning device for an inner shell of a double-layer containment, which comprises a spray head annular rail, a spray head annular rail base, a spray head, a telescopic assembly, an annular rail guide rail and a water delivery main pipe,
the sprayer ring rail is arranged on the sprayer ring rail base and can rotate along the circumferential direction of the sprayer ring rail base;
the nozzle base is used for mounting the nozzle and can adjust the angle of the nozzle so as to adjust the water spraying angle of the nozzle;
the two ends of the spray head circular rail are connected with the spray head circular rail base through the telescopic assemblies, and the spray head circular rail can generate controllable circumferential rotation through the telescopic assemblies;
the inner and outer edges of the bottom of the sprayer circular rail are matched with the corresponding inner and outer edges of the sprayer circular rail base so as to limit the sprayer circular rail to move in the vertical direction;
the annular rail guide rail is used for conveying the spray head annular rail to a specified position;
the water delivery main pipe penetrates into the spray head ring rail and is used for conveying external water to the spray head.
In a preferred embodiment, the invention provides a double-layer containment inner shell cleaning device, wherein the ring rail guide rail is of a multi-section ladder-shaped structure, a first section of slide of the ring rail guide rail is fixed on a containment wall, the last section of slide is provided with the nozzle ring rail and the nozzle ring rail base, each section of slide can slide up and down along the section of slide on the ring rail guide rail, and the lifting of each section of slide is realized through a lifting rope.
In a preferred embodiment, the invention provides a cleaning device for an inner shell of a double-layer containment, wherein the cleaning device further comprises a water diversion main pipe and a connecting water pipe which are arranged in the nozzle ring rail and are connected with each other, the water delivery main pipe is connected with the water diversion main pipe, and the connecting water pipe is connected with the nozzle.
In a preferred embodiment, the present invention provides a double containment inner shell cleaning apparatus, wherein the cleaning apparatus further comprises a power delivery line partially within the spray head ring track for delivering power to the spray head base.
In a preferred embodiment, the invention provides a cleaning device for an inner shell of a double-layer containment, wherein a groove is formed in the bottom of a nozzle ring rail, and balls used for being matched with a nozzle ring rail base are arranged in the groove, so that the nozzle ring rail can rotate along the circumferential direction of the nozzle ring rail base within a certain angle.
In a preferred embodiment, the invention provides a double-layer inner containment shell cleaning device, wherein the cleaning device further comprises a rubber layer arranged outside the ring rail guide rail and used for preventing the cleaning device from colliding and contacting with the outer wall of the inner containment shell during cleaning to damage a paint layer of the outer wall.
The double-layer containment inner shell cleaning device has the advantages that the double-layer containment inner shell cleaning device can be used for cleaning the double-layer containment inner shell during maintenance of the double-layer containment, so that dust and dirt on the surface of the inner shell are removed, the heat exchange performance and the water film distribution performance of the inner shell are ensured, and the high safety margin of a nuclear power plant is maintained.
The beneficial effects of the invention are embodied in that:
(1) the cleaning device comprises a storage component, a spray head ring rail guide rail, a spray head, a water delivery main pipe and the like in the containment, is high in integration degree, simple in structure and light in weight, and has no influence on the asexual performance of a shielding factory building;
(2) the cleaning device can meet the cleaning requirement of the gap between the guide plate and the inner shell, and the guide plate does not need to be disassembled when the inner shell is cleaned;
(3) the cleaning device is simple to operate and short in maintenance time, and cleaning can be performed only by automatically placing the cleaning device at a specified position according to setting.
Drawings
FIG. 1 is a schematic cross-sectional view of an exemplary dual containment inner shell cleaning apparatus of the present invention.
FIG. 2 is a schematic structural diagram of a nozzle ring rail and a nozzle ring rail base of an exemplary dual containment inner shell cleaning apparatus of the present invention.
FIG. 3 is a schematic diagram of an exemplary circular rail structure of the cleaning device for the inner shell of the double containment vessel of the present invention.
FIG. 4 is a schematic diagram illustrating the cleaning of the inner shell of the double containment vessel by the cleaning apparatus of the invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings.
The structure of the exemplary double-containment inner shell cleaning device of the invention is shown in fig. 1, fig. 2 and fig. 3, and comprises a power transmission line 20, a spray head 21, a spray head base 22, a spray head ring rail 23, a water distribution main pipe 24, a ring rail guide rail 25, a water delivery main pipe 26, balls 27, a spray head ring rail base 28, a connecting water pipe 29, a rubber layer and a telescopic assembly (not shown in the figure).
As shown in fig. 1 and 2, showerhead annular rail 23 is mounted on showerhead annular rail base 28, and one or more showerhead bases 22 are mounted on top of showerhead annular rail 23. The bottom of the sprayer circular rail 23 is provided with a groove, and a ball 27 is arranged in the groove and is used for being matched with a sprayer circular rail base 28 to ensure that the sprayer circular rail 23 rotates along the circumferential direction of the sprayer circular rail base 28 within a certain angle. The nozzle ring rail base 28 can enable the nozzle ring rail 23 installed on the nozzle ring rail base to rotate in a certain angle, so that water sprayed out of the nozzles 21 can cover the whole outer wall surface of the steel shell of the containment shell in the circumferential direction.
The nozzle base 22 is used for installing one or more nozzles 21, and can adjust the angle of the nozzles 21 in the vertical direction, so as to adjust the water spraying angle of the nozzles 21 and the divergence of sprayed water flowers, and make the sprayed water directly reach the wall surface of the whole containment vessel to be cleaned.
Both ends of the nozzle ring rail 23 are connected with the nozzle ring rail base 28 through telescopic components, and the nozzle ring rail 23 can rotate in a controllable circumferential direction through the telescopic components.
The bottom inside and outside edges of showerhead annular rail 23 mate with corresponding inside and outside edges of showerhead annular rail base 28 to limit vertical movement of showerhead annular rail 23.
The circular rail guide 25 is used to transport the shower head circular rail 23 to a designated position. As shown in fig. 3, the ring rail guide 25 is a multi-section ladder-shaped structure, the first section of slide of the ring rail guide is fixed on the containment wall, the last section of slide is provided with the nozzle ring rail 23 and the nozzle ring rail base 28, each section of slide can slide up and down along the upper section of slide, and the lifting of each section of slide is realized through the lifting rope. Each section of slide is provided with a lifting rope hole 30, and the lifting rope sequentially passes through each lifting rope hole 30 to be fixedly connected with the last section of slide. When the device is not used, the whole circular rail guide rail, the spray head guide rail arranged on the circular rail guide rail and the spray head guide rail base are arranged in the storage area of the cleaning device, and the lifting rope is in a retracted state, so that the whole device is in a standby state. When the lifting rope is used, the lifting rope is gradually put down according to the cleaning requirement, each guide rail slide starts to slide downwards along with the lifting rope, and the whole process can be gradually adjusted.
The outside of the ring rail 25 is provided with a rubber layer for preventing the cleaning device from colliding and contacting with the outer wall of the inner shell of the containment vessel during cleaning to damage the paint layer of the outer wall.
The water delivery main pipe 26 penetrates into the nozzle ring rail 23 and then is sequentially connected with the water distribution main pipe 24 and the connecting water pipe 29 in the nozzle ring rail 23, and is used for delivering external water to the nozzles 21. The power transmission line 20 is partially located within the showerhead annular rail 23 for transmitting power to the showerhead base 22.
The principle of the double-layer inner containment shell cleaning device for cleaning the double-layer inner containment shell is shown in fig. 4. When the cleaning task is not performed, the whole cleaning device is stored and placed at the position of A. When the cleaning is needed, the lifting rope of the ring rail guide rail is adjusted, and the nozzle ring rail is placed at the position needing cleaning. If the cleaning of a plurality of positions is finished, the circumferential positions of the lifting rope and the spray head circular rail are adjusted according to the conditions, and the cleaning of a new position is carried out. The circumferential position can be adjusted in two ways, one way is that a truss car track is arranged at the upper end of the circular track guide rail 25 and can be controlled by a power device; and the other is that the two ends of the guide rail of the nozzle ring rail 23 are provided with telescopic traction devices which obtain control signals and can control the position of the nozzle ring rail 23. After the cleaning is finished, the lifting rope is folded, and the ring rail guide rail slide is also folded.
When the double-layer containment shell needs to be cleaned, a corresponding power supply and a corresponding water source are prepared, the ring rail guide rail 25 and the water delivery main pipe 26 are lowered to a specified position, and the position can enable the spray head 21 to spray water to cover the axial range of the outer surface of the containment steel shell under the condition of adjusting the angle of the spray head 21.
After the initial water spraying angle and water spraying pressure of the spray head 21 are determined, the outer wall surface of the steel shell of the inner shell of the containment shell is cleaned, the angle coverage of the spray head 21 is adjusted, and the outer wall surface is cleaned gradually along the radial direction until the outer wall surface is cleaned in the whole axial range. The circumferential angle of the spray head 21 is adjusted stepwise so that the circumferential position can be cleaned completely also after the adjustment cycle has ended.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations. The above-described embodiments are merely illustrative of the present invention, and the present invention may be embodied in other specific forms or other specific forms without departing from the spirit or essential characteristics thereof. The described embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention should be indicated by the appended claims, and any changes that are equivalent to the intent and scope of the claims should be construed to be included therein.
Claims (6)
1. The utility model provides a double-deck containment inner shell belt cleaning device which characterized in that: the cleaning device comprises a spray head circular rail, a spray head circular rail base, a spray head, a telescopic component, a circular rail guide rail and a water delivery main pipe,
the sprayer ring rail is arranged on the sprayer ring rail base and can rotate along the circumferential direction of the sprayer ring rail base;
the nozzle base is used for mounting the nozzle and can adjust the angle of the nozzle so as to adjust the water spraying angle of the nozzle;
the two ends of the spray head circular rail are connected with the spray head circular rail base through the telescopic assemblies, and the spray head circular rail can generate controllable circumferential rotation through the telescopic assemblies;
the inner and outer edges of the bottom of the sprayer circular rail are matched with the corresponding inner and outer edges of the sprayer circular rail base so as to limit the sprayer circular rail to move in the vertical direction;
the annular rail guide rail is used for conveying the spray head annular rail to a specified position;
the water delivery main pipe penetrates into the spray head ring rail and is used for conveying external water to the spray head.
2. The cleaning device of claim 1, wherein: the annular rail guide rail is of a multi-section ladder-shaped structure, a first section of slide of the annular rail guide rail is fixed on a containment wall, the spray head annular rail and a spray head annular rail base are installed on the last section of slide, each section of slide can slide up and down along the upper section of slide, and the lifting of each section of slide is realized through a lifting rope.
3. The cleaning device of claim 1, wherein: the cleaning device also comprises a water distribution main pipe and a connecting water pipe which are arranged in the nozzle ring rail and are connected with each other, the water delivery main pipe is connected with the water distribution main pipe, and the connecting water pipe is connected with the nozzle.
4. The cleaning device of claim 1, wherein: the cleaning apparatus further includes a power delivery line partially disposed within the showerhead annular rail for delivering power to the showerhead base.
5. The cleaning device of claim 1, wherein: the sprayer ring rail is characterized in that a groove is formed in the bottom of the sprayer ring rail, and balls matched with the sprayer ring rail base are arranged in the groove, so that the sprayer ring rail can rotate in the circumferential direction of the sprayer ring rail base within a certain angle.
6. The cleaning device of claim 1, wherein: the cleaning device also comprises a rubber layer arranged outside the annular rail guide rail and used for preventing the cleaning device from colliding and contacting with the outer wall of the inner shell of the containment vessel during cleaning to damage a paint layer of the outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811390927.5A CN109622463B (en) | 2018-11-21 | 2018-11-21 | Double-layer containment inner shell cleaning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811390927.5A CN109622463B (en) | 2018-11-21 | 2018-11-21 | Double-layer containment inner shell cleaning device |
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| Publication Number | Publication Date |
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| CN109622463A CN109622463A (en) | 2019-04-16 |
| CN109622463B true CN109622463B (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811390927.5A Active CN109622463B (en) | 2018-11-21 | 2018-11-21 | Double-layer containment inner shell cleaning device |
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| CN114678145B (en) * | 2021-08-26 | 2024-09-17 | 国家电投集团科学技术研究院有限公司 | Nuclear reactor containment vessel outer coating test system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203389896U (en) * | 2013-06-18 | 2014-01-15 | 广东电网公司电力科学研究院 | Mechanical wrist sprinkler component |
| CN107486360A (en) * | 2017-10-19 | 2017-12-19 | 中国工程物理研究院化工材料研究所 | A kind of adjustable non-full circle cambered surface automatic spray apparatus of sprinkler height |
| CN206862965U (en) * | 2017-07-13 | 2018-01-09 | 王启舟 | Defects in Pressure Container detection means |
| CN108296058A (en) * | 2018-01-15 | 2018-07-20 | 王双 | A kind of filter is anti-oxidation to use surface lacquer machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2630920B2 (en) * | 1994-10-07 | 1997-07-16 | 明星工業株式会社 | External cleaning device for tube bundle for heat exchanger |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203389896U (en) * | 2013-06-18 | 2014-01-15 | 广东电网公司电力科学研究院 | Mechanical wrist sprinkler component |
| CN206862965U (en) * | 2017-07-13 | 2018-01-09 | 王启舟 | Defects in Pressure Container detection means |
| CN107486360A (en) * | 2017-10-19 | 2017-12-19 | 中国工程物理研究院化工材料研究所 | A kind of adjustable non-full circle cambered surface automatic spray apparatus of sprinkler height |
| CN108296058A (en) * | 2018-01-15 | 2018-07-20 | 王双 | A kind of filter is anti-oxidation to use surface lacquer machine |
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| CN109622463A (en) | 2019-04-16 |
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