CN114653694A - Opposite-swing nozzle structure for washing sludge of tube plate of steam generator - Google Patents
Opposite-swing nozzle structure for washing sludge of tube plate of steam generator Download PDFInfo
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- CN114653694A CN114653694A CN202011526409.9A CN202011526409A CN114653694A CN 114653694 A CN114653694 A CN 114653694A CN 202011526409 A CN202011526409 A CN 202011526409A CN 114653694 A CN114653694 A CN 114653694A
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- nozzle
- steam generator
- screw rod
- transmission rack
- transmission
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/049—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes, i.e. self-propelled
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- Mechanical Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a counter-swing nozzle structure for washing sludge of a tube plate of a steam generator, which comprises an input structure, a transmission rack and an output structure, wherein the transmission rack is meshed with a plurality of nozzle rotating shaft gears with fixed angles in multiple directions. The input structure comprises a transmission screw rod, one end of the transmission screw rod is connected with a driving motor, the other end of the transmission screw rod is connected with a screw rod nut, and the screw rod nut is fixedly connected with the push rod. The transmission rack is fixedly arranged on the push rod and meshed with the nozzle rotating shaft on the nozzle block. The transmission rack output structure comprises a nozzle block, nozzle rotating shafts and nozzles, wherein 2 groups of nozzle rotating shafts are arranged on the nozzle block, each nozzle rotating shaft is provided with a nozzle, and the nozzle rotating shafts are meshed with the transmission rack. The advantages are that: the invention can simultaneously realize the cleaning between the heat transfer tubes at two sides of the tube plate of the steam generator, reduce the invalid stroke of the nozzle structure, improve the working efficiency, reduce the working time of operators, reduce the irradiation dose and simultaneously reduce the power requirement of a high-pressure pump.
Description
Technical Field
The invention belongs to the field of nuclear power overhaul, and particularly relates to a counter-swing nozzle structure for washing sludge of a tube plate of a steam generator, in particular to a counter-swing nozzle structure for washing sludge of a secondary side tube plate of a steam generator with heat transfer tubes arranged in a regular triangle.
Background
The removal of sludge is an important component of the maintenance and management of steam generators in nuclear power plants, due to the possible serious consequences of sludge deposits on the steam generators. In order to better solve the problem of sludge deposition, sludge washing is required to be carried out regularly.
Some unit steam generator heat-transfer pipes in active service nuclear power station are regular triangle-shaped arranges, and the heat-transfer pipe array orientation is 60 contained angles with the center tube corridor promptly, and the steam generator tube sheet that regular triangle-shaped arranged has two directions of washing, is 60 and 120 respectively. In order to better remove sludge deposited on a tube plate of a steam generator and need to carry out all-dimensional washing, the existing washing gun mainly adopts a one-way structure (such as a 60-degree washing gun and a 120-degree washing gun), multiple sets of equipment are needed to be matched to realize the washing requirements in the directions of 60 degrees and 120 degrees, the washing gun is of a cantilever structure, and the extension washing range of a gun rod needs to be increased section by section, so that the field operation personnel has large workload, long working time and high irradiation dose; the washing gun adopts a symmetrical arrangement balanced nozzle structure, only one-side high-pressure water is sprayed on the tube plate during washing, the washing time is long, the water consumption is large, the efficiency is lower, and the requirement on the power of the high-pressure pump is high.
Disclosure of Invention
The invention aims to provide a double-pendulum nozzle structure for washing sludge of a tube plate of a steam generator, which can solve the problems of low high-pressure water utilization rate, low washing efficiency and the like of the existing washing equipment, reduce the working intensity of operators, reduce the irradiation dose and improve the field working efficiency.
The technical scheme of the invention is as follows: the utility model provides a steam generator tube sheet mud sediment is washed to pendulum nozzle structure, includes input structure, transmission rack and output structure, and the transmission rack meshes with the nozzle pivot gear of the fixed angle of a plurality of directions.
The input structure comprises a transmission screw rod, one end of the transmission screw rod is connected with a driving motor, the other end of the transmission screw rod is connected with a screw rod nut, and the screw rod nut is fixedly connected with the push rod.
The transmission rack is fixedly arranged on the push rod and meshed with the nozzle rotating shaft on the nozzle block.
The tooth shape of the transmission rack is a straight tooth structure.
The transmission rack output structure comprises a nozzle block, nozzle rotating shafts and nozzles, wherein 2 groups of nozzle rotating shafts are arranged on the nozzle block, each nozzle rotating shaft is provided with a nozzle, and the nozzle rotating shafts are meshed with the transmission rack.
The rotating shaft of the nozzle adopts a straight tooth structure.
The nozzle block is symmetrically provided with 2 groups of nozzle rotating shafts in a 60-degree direction.
The invention has the beneficial effects that: the invention is suitable for the opposite-swing nozzle structure for washing sludge on the secondary side tube plate of the steam generator with the heat transfer tubes arranged in a regular triangle, and simultaneously realizes the cleaning between the heat transfer tubes on the two sides of the tube plate of the steam generator, reduces the invalid stroke of the nozzle structure, improves the working efficiency, reduces the working time of operators, reduces the irradiation dose, simultaneously reduces the power requirement of a high-pressure pump, and is convenient for the miniaturization of equipment.
Drawings
FIG. 1 is a cross-sectional view of a steam generator tube sheet sludge flushing contra-pendulum nozzle structure provided by the present invention;
FIG. 2 is a top view of a steam generator tube sheet sludge flushing contra-oscillating nozzle arrangement provided by the present invention;
FIG. 3 is a nozzle installation diagram of a double pendulum nozzle structure for sludge flushing of a tube plate of a steam generator provided by the invention.
In the figure, 11 driving motors, 12 driving screws, 13 screw nuts, 14 push rods, 15 driving racks, 16 nozzle blocks, 17 bases, 18 nozzle rotating shafts and 21 nozzles are arranged.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
The invention mainly solves the problems existing in the background technology by the following technical scheme: the utility model provides a steam generator tube sheet mud sediment is washed to pendulum nozzle structure, its includes input structure, transmission rack and output structure, and the transmission rack meshes with the nozzle pivot gear of the fixed angle of a plurality of directions.
The input structure comprises a transmission screw rod 12, one end of the transmission screw rod 12 is connected with a driving motor 11 to drive the transmission screw rod 12 to rotate, the other end of the transmission screw rod 12 is connected with a screw rod nut 13, and the screw rod nut 13 is fixedly connected with a push rod 14 to push the push rod 14 to move linearly. Wherein the other end of the push rod 14 is fixedly connected to the transmission rack 15 to drive the transmission rack 15 to do linear reciprocating motion together.
The transmission rack 15 is fixedly arranged on the push rod 14 and linearly reciprocates together with the push rod 14, and the tooth form of the rack is a straight tooth structure and is meshed with a nozzle rotating shaft 18 on the nozzle block 16.
The output structure comprises a nozzle block 16, nozzle rotating shafts and nozzles 21, wherein 2 groups of nozzle rotating shafts 18 are symmetrically arranged on the nozzle block 16 in a 60-degree direction, each nozzle rotating shaft 18 is provided with a nozzle 21, the nozzle rotating shafts 18 adopt straight tooth structures and are meshed with a transmission rack 15, and when the transmission rack 15 does reciprocating motion, the nozzle rotating shafts 18 are pushed to rotate, so that the symmetrical swinging of the nozzles in the 60-degree direction is realized.
As shown in the attached drawings 1-3, the counter-swing nozzle structure for washing sludge in a tube plate of a steam generator in the invention comprises a driving motor 11, a transmission screw rod 12, a screw rod nut 13, a push rod 14, a transmission rack 15, a nozzle block 16, a base 17, a nozzle rotating shaft 18 and a nozzle 21; the driving motor 11 drives the transmission screw rod 12 to rotate, the screw rod nut 13 is pushed to do reciprocating motion along the axis direction of the transmission screw rod 12, one end of the push rod 14 is connected with the screw rod nut 13, and the transmission rack 15 is fixed at the other end of the push rod, so that the transmission rack 15 is pushed to do reciprocating motion. The 2 groups of nozzle rotating shafts 18 are symmetrically arranged on the nozzle block 16 at an angle of 60 degrees, 2 nozzles 21 are arranged on each group of nozzle rotating shafts 18, the axes of the nozzles 21 and the axes of the nozzle rotating shafts 18 form an eccentric structure, the nozzle rotating shafts 18 are of straight tooth structures, the transmission racks 15 are meshed, and the nozzle rotating shafts 18 are pushed to rotate when the transmission racks 15 reciprocate, so that the nozzles 21 on two sides can swing in a reciprocating manner.
The effect is as follows:
the invention is suitable for the steam generator tube plate sludge flushing of which the heat transfer tubes are arranged in a regular triangle, and has the technical characteristics that: the problems that the high-pressure water utilization rate of the existing flushing equipment is low, the flushing efficiency is low and the like are solved, the working intensity of operators is reduced, the irradiation dose is reduced, and the field working efficiency is improved.
The invention is suitable for the steam generator tube plate sludge flushing of which the heat transfer tubes are arranged in a regular triangle, and has the technical characteristics that: the spray gun is of a swinging nozzle structure, so that tube plates on two sides of a central tube gallery of the steam generator can be washed simultaneously, the washing efficiency can be improved, the power of a high-pressure pump is reduced, and the water consumption for field washing is reduced.
Claims (7)
1. The utility model provides a steam generator tube sheet mud sediment is washed to pendulum nozzle structure which characterized in that: the nozzle rotating shaft gear meshing device comprises an input structure, a transmission rack and an output structure, wherein the transmission rack is meshed with nozzle rotating shaft gears of a plurality of fixed angles in directions.
2. The opposed-pendulum nozzle structure for steam generator tube sheet sludge flushing of claim 1, further comprising: the input structure comprises a transmission screw rod, one end of the transmission screw rod is connected with a driving motor, the other end of the transmission screw rod is connected with a screw rod nut, and the screw rod nut is fixedly connected with the push rod.
3. The opposed-pendulum nozzle structure for steam generator tube sheet sludge flushing of claim 1, further comprising: the transmission rack is fixedly arranged on the push rod and meshed with the nozzle rotating shaft on the nozzle block.
4. The opposed-pendulum nozzle structure for steam generator tube sheet sludge washing of claim 3, wherein: the tooth shape of the transmission rack is a straight tooth structure.
5. The opposed-pendulum nozzle structure for steam generator tube sheet sludge flushing of claim 1, further comprising: the transmission rack output structure comprises a nozzle block, nozzle rotating shafts and nozzles, wherein 2 groups of nozzle rotating shafts are arranged on the nozzle block, each nozzle rotating shaft is provided with a nozzle, and the nozzle rotating shafts are meshed with the transmission rack.
6. The counter-swing nozzle structure for steam generator tube sheet sludge washing of claim 5, wherein: the rotating shaft of the nozzle adopts a straight tooth structure.
7. The steam generator tube sheet sludge washing contra-pendulum nozzle structure of claim 5, wherein: the nozzle block is symmetrically provided with 2 groups of nozzle rotating shafts in a 60-degree direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011526409.9A CN114653694B (en) | 2020-12-22 | 2020-12-22 | Opposite-swing nozzle structure for washing sludge of tube plate of steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011526409.9A CN114653694B (en) | 2020-12-22 | 2020-12-22 | Opposite-swing nozzle structure for washing sludge of tube plate of steam generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114653694A true CN114653694A (en) | 2022-06-24 |
| CN114653694B CN114653694B (en) | 2023-03-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011526409.9A Active CN114653694B (en) | 2020-12-22 | 2020-12-22 | Opposite-swing nozzle structure for washing sludge of tube plate of steam generator |
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| Country | Link |
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| CN (1) | CN114653694B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4620881A (en) * | 1983-08-26 | 1986-11-04 | Innus Industrial Nuclear Services S.A. | Method for cleaning a steam generator |
| CN1868611A (en) * | 2005-05-27 | 2006-11-29 | 韩国电力公社 | Cleaning device of steam generator, jetting water under high pressure |
| KR101147356B1 (en) * | 2011-12-05 | 2012-05-22 | 배용한 | Robot for washing total sector of tube sheet of steam generator |
| CN103861830A (en) * | 2012-12-17 | 2014-06-18 | 核动力运行研究所 | Sludge washing gun with multi-nozzle structure |
| CN204478915U (en) * | 2014-12-30 | 2015-07-15 | 中核武汉核电运行技术股份有限公司 | A kind of oblique nozzle transmission device being applicable to triangular form AP1000 evaporimeter |
| CN106247845A (en) * | 2015-06-10 | 2016-12-21 | 阿海珐有限公司 | For cleaning equipment and the method for heat exchanger interior zone |
| CN107175227A (en) * | 2016-03-10 | 2017-09-19 | 核动力运行研究所 | Steam generator secondary side the first supporting plate lower surface hydrodynamic cleaning device |
| CN109967422A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | One kind being used for steam generator secondary side tube sheet body refuse high pressure water flooding nozzle |
-
2020
- 2020-12-22 CN CN202011526409.9A patent/CN114653694B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4620881A (en) * | 1983-08-26 | 1986-11-04 | Innus Industrial Nuclear Services S.A. | Method for cleaning a steam generator |
| CN1868611A (en) * | 2005-05-27 | 2006-11-29 | 韩国电力公社 | Cleaning device of steam generator, jetting water under high pressure |
| KR101147356B1 (en) * | 2011-12-05 | 2012-05-22 | 배용한 | Robot for washing total sector of tube sheet of steam generator |
| CN103861830A (en) * | 2012-12-17 | 2014-06-18 | 核动力运行研究所 | Sludge washing gun with multi-nozzle structure |
| CN204478915U (en) * | 2014-12-30 | 2015-07-15 | 中核武汉核电运行技术股份有限公司 | A kind of oblique nozzle transmission device being applicable to triangular form AP1000 evaporimeter |
| CN106247845A (en) * | 2015-06-10 | 2016-12-21 | 阿海珐有限公司 | For cleaning equipment and the method for heat exchanger interior zone |
| CN107175227A (en) * | 2016-03-10 | 2017-09-19 | 核动力运行研究所 | Steam generator secondary side the first supporting plate lower surface hydrodynamic cleaning device |
| CN109967422A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | One kind being used for steam generator secondary side tube sheet body refuse high pressure water flooding nozzle |
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| Publication number | Publication date |
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| CN114653694B (en) | 2023-03-17 |
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