CN103406226A - Vapor generator sludge washing nozzle device for EPR (European pressurized reactor) type nuclear power plant - Google Patents
Vapor generator sludge washing nozzle device for EPR (European pressurized reactor) type nuclear power plant Download PDFInfo
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- CN103406226A CN103406226A CN2013103415577A CN201310341557A CN103406226A CN 103406226 A CN103406226 A CN 103406226A CN 2013103415577 A CN2013103415577 A CN 2013103415577A CN 201310341557 A CN201310341557 A CN 201310341557A CN 103406226 A CN103406226 A CN 103406226A
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- shower nozzle
- connecting rod
- rotating shaft
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- spray gun
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Abstract
The invention relates to a vapor generator sludge washing nozzle device for an ERP (European pressurized reactor) type nuclear power plant. The vapor generator sludge washing nozzle device comprises a spraying gun connecting rod and three nozzles, a rotatable transmission shaft is coaxially arranged on the spraying gun connecting rod, the nozzles are alternately and detachably mounted on the end portion of the spraying gun connecting rod, the front ends of the nozzles can be driven by the transmission shaft to rotate circumferentially within an A-A section, and included angles of the nozzle front-end axes of the nozzles and the axes of rotating shafts are 60 degrees, 0 degree and -60 degrees respectively. The vapor generator sludge washing nozzle device is provided with the three nozzles at different angles, and water can be sprayed from different angles to clean a vapor generator, so that cleaning effect of the vapor generator is improved; the front ends of the nozzles can be driven by the transmission shaft to rotate by 180 degrees so as to clean whole vapor generator heat conducting pipes, so that working efficiency is improved.
Description
Technical field
The present invention relates to a kind of cleaning device, be specifically related to a kind of for EPR heap type Steam Generators in NPP body refuse cleaning ejecting device.
Background technology
Steam generator is one of visual plant of nuclear power plant, plays one, heat exchange and the buffer action of secondary circuit.Steam generator secondary side under long-term Power operation easily produces subsidence settling at cold and hot boundary end, shows that through great many of experiments the body refuse of deposition can reduce the heat transfer efficiency of steam generator internal heat transfer pipe and increase the damaged probability of heat-transfer pipe.Therefore in order to remove this type of dislodged sludge, during nuclear power plant's overhaul, all can carry out the body refuse cleaning for steam generator secondary side.
At present both at home and abroad all exploitation has the body refuse cleaning equipment that is applied to different IPs power plant heap type, as the body refuse cleaning equipment of France's development in Daya Bay nuclear power plant's successful Application more than ten years.All there are corresponding special equipment in the U.S., Japan, Korea S for the exploitation of own national nuclear power plant simultaneously.These equipment major parts possess identical principle: by the spray gun propulsive mechanism changed manually or automatically by high-pressure water shot to target area that needs are removed contamination, the body refuse water that utilizes simultaneously retracting device will remain in steam generator tube sheet secondary side recycles and re-uses, and realizes on the basis of water circulation the cleaning to steam generator secondary side.
What domestic application was the widest now is the rigid sludge cleaning means, and its shower nozzle is only applicable to the steam generator that heat-transfer pipe is rectanglar arrangement, and the direction of water jet and the direction of shower nozzle can not change.And the heat-transfer pipe 6 that develops into the steam generator of the third generation of today Europe advanced pressurized water reactor (EPR) heap type is to adopt equilateral triangle to arrange, as shown in Figure 1, this setup is conducive to the sufficient heat exchange of heat-transfer pipe, has saved floor space, has but increased the difficulty that its body refuse cleans.In order to solve this difficult problem, design a kind of ejecting device that is applicable to the steam generator heat-transfer pipe that equilateral triangle arranges and just seem that tool has very important significance.
Summary of the invention
The present invention seeks to provide in order to overcome the deficiencies in the prior art a kind of ejecting device that steam generator heat-transfer pipe that equilateral triangle arranges and water jet direction can change that is applicable to.
For achieving the above object, the technical solution used in the present invention is: a kind of for EPR heap type Steam Generators in NPP body refuse cleaning ejecting device, it comprises:
The spray gun connecting rod, be coaxially arranged with rotating power transmission shaft in described spray gun connecting rod;
Three shower nozzles, described three shower nozzles alternately are removably mounted on described spray gun connecting rod end, it comprises nozzle housing, be located at the rotating shaft that nozzle housing central authorities are coaxial with described power transmission shaft and bond connected connects, the shower nozzle front end that seals mutually and be connected with described rotating shaft with described nozzle housing, described shower nozzle front end comprises the punching chamber of offering at the Yan Qi center, perpendicular with described punching chamber and be communicated with the spray orifice of offering, between described spray gun connecting rod and power transmission shaft, between nozzle housing and rotating shaft, be formed with the water stream channel be connected with described punching chamber, in described three shower nozzles, the shower nozzle front end axial line of one of them shower nozzle and the axial line angle of described rotating shaft are 0 °, the angle of the shower nozzle front end axial line of two other shower nozzle and the axial line of described rotating shaft is respectively ± and 60 °.
Optimally, described power transmission shaft is connected with rotating shaft by spline, and described rotating shaft is connected with the shower nozzle front end by gear pair.
Further, described gear pair adopts bevel gear.
Optimally, described spray gun connecting rod is fixed with shower nozzle phase bolt.
Optimally, between described spray gun connecting rod and shower nozzle, use seal with elastometic washer.
Optimally, between described nozzle housing and shower nozzle front end, use packing seal.
Because technique scheme is used, the present invention compared with prior art has following advantages: the ejecting device that steam generator body refuse of the present invention cleans is joined the shower nozzle of three different angles, can spray water steam generator is cleaned from different perspectives, improve the cleaning effect of steam generator; The shower nozzle front end can be done 180 ° of rotations under the drive of power transmission shaft in addition, thereby whole steam generator heat-transfer pipe is cleaned, and has improved operating efficiency.
The accompanying drawing explanation
Accompanying drawing 1 arranges for the steam generator heat-transfer pipe of existing EPR heap type the structural representation that is equilateral triangle;
Accompanying drawing 2 is used view for steam generator body refuse of the present invention cleans ejecting device;
Accompanying drawing 3 is that accompanying drawing 2 steam generator body refuses clean shower nozzle front cross-sectional view in ejecting device;
Accompanying drawing 4 is used view for steam generator body refuse of the present invention cleans ejecting device;
Accompanying drawing 5 is used view for steam generator body refuse of the present invention cleans ejecting device;
Wherein: 1, spray gun connecting rod; 2, shower nozzle; 21, nozzle housing; 22, rotating shaft; 23, shower nozzle front end; 231, punching chamber; 232, spray orifice; 2 ', shower nozzle; 21 ', nozzle housing; 22 ', rotating shaft; 23 ', shower nozzle front end; 231 ', punching chamber; 232 ', spray orifice; 2 ' ', shower nozzle; 21 ' ', nozzle housing; 22 ' ', rotating shaft; 23 ' ', shower nozzle front end; 231 ' ', punching chamber; 232 ' ', spray orifice; 3, water stream channel; 4, spline; 5, bevel gear; 6, steam generator heat-transfer pipe; 7, steam generator heat-transfer pipe corridor dividing plate.
The specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiment of the invention is elaborated:
The heat-transfer pipe 6 of Europe third generation EPR heap type Steam Generators in NPP is equilateral triangle arranges, and as shown in Figure 1, both has been conducive to the sufficient heat exchange of heat-transfer pipe, has increased again the stacking degree of heat-transfer pipe, has saved floor space.Yet such set-up mode has increased the difficulty that its body refuse cleans, need to heat-transfer pipe 6, spray water respectively from tri-directions of a, b, c that mark Fig. 1, body refuse can be cleaned up.Heat-transfer pipe 6 belows are provided with heat transfer piping lane dividing plate 7 simultaneously, and the body refuse cleaning device can only be installed in the gap between heat-transfer pipe 6 and heat transfer piping lane dividing plate 7 in use, the limited space that can use.
Body refuse of the present invention cleans ejecting device and is applicable to heat-transfer pipe to be that equilateral triangle is arranged and institute takes up space less, it mainly comprises spray gun connecting rod 1 and three shower nozzles, wherein in spray gun connecting rod 1, be provided with 11, three shower nozzles of power transmission shaft and alternately be removably mounted on spray gun connecting rod 1 end.
As shown in Figure 2 and Figure 3, shower nozzle 2 mainly comprises nozzle housing 21, rotating shaft 22, shower nozzle front end 23.Rotating shaft 22 coaxially is arranged at nozzle housing 21 central authorities, and its end and power transmission shaft 11 bond connecteds connect, and can drive its synchronous rotary when under the driving of power transmission shaft 11 at servomotor, rotating; Its other end is connected with shower nozzle front end 23, in its A-A cross section, makes circumferential movement thereby drive shower nozzle front end 23.Shower nozzle front end 23 comprises punching chamber 231 and spray orifice 232, spray orifice 232 connections are offered and are perpendicular with punching chamber 231, space between space, nozzle housing 21 and rotating shaft 22 between they and spray gun connecting rod 1 and power transmission shaft 11 is interconnected and forms water stream channel 3, for delivery of water under high pressure.Shower nozzle front end 23 axial lines and rotating shaft 22 axial line angles are 60 °, so the c direction in the water outlet direction corresponding diagram 1 of shower nozzle 2.
In the present embodiment, rotating shaft 22 1 ends are connected with power transmission shaft 11 use splines 4, thereby make rotating shaft 22 under the drive of power transmission shaft 11, do and rotate in a circumferential direction in its cross section; Rotating shaft 22 other ends are connected with shower nozzle front end 23 with bevel gear 5, thereby are the circumferential movement of shower nozzle front end 23 in its A-A cross section by the conversion of motion of rotating shaft 22.By the anglec of rotation of controlling power transmission shaft 11, the anglec of rotation of shower nozzle front end 23 in its A-A cross section be can control, the incident angle of water jet between the heat-transfer pipe tube gap and the purpose of distance controlled thereby reach.In order to keep the pressure of water under high pressure, the gland sealed form is adopted in the sealing between shower nozzle front end 23 and nozzle housing 21, and the sealing means between spray gun connecting rod 1 and shower nozzle 2 adopts O type rubber ring.
As shown in Figure 4, Figure 5, shower nozzle 2 ', shower nozzle 2 ' ' overall structure and shower nozzle 2 roughly the same, different is that the axial line angle of their shower nozzle front end axial line and rotating shaft is respectively 0 ° ,-60 °, thereby water outlet direction difference, corresponding b, a both direction respectively.In the present embodiment, spray gun connecting rod 1 and three shower nozzles are alternately fixed by four bolts, after using 2 pairs of c directions of shower nozzle to clean, fast bolt is outwarded winding, change respectively shower nozzle 2 ', shower nozzle 2 ' ', again b, a both direction are cleaned, can complete the cleaning to heat-transfer pipe, greatly improved the clean-up performance of heat-transfer pipe 6 and workman's operating efficiency.
Above-mentionedly the present invention cleaned to the ejecting device structure for EPR heap type Steam Generators in NPP body refuse be illustrated, below its operation principle is done to brief description:
In use, select shower nozzle 2 to be installed on spray gun connecting rod 1 end, together with step device, be fixed on the flange at steam generator hand hole place subsequently; The power transmission shaft of spray gun connecting rod 1 11 is connected with the servomotor in the flange outside, switch on power, utilize servomotor to drive power transmission shaft 11 and do circumferential movement, and then drive driving rotating shaft 22 rotates together, the conversion of motion of rotating shaft 22 is the circumferential movement of shower nozzle front end 23 in its A-A cross section the most at last, so just the anglec of rotation of power transmission shaft 11 be can pass through to control, thereby water jet incident angle and distance on heat-transfer pipe controlled; Water under high pressure sprays clean body refuse from spray orifice 232 to the c direction through water stream channel 3 simultaneously, starts step device and regulates the length that spray gun connecting rod 1 enters steam generator, can clean the body refuse on heat-transfer pipe 6 in the Different Plane parallel with the c direction; After the body refuse on the c direction cleans up, cleaning device is taken out and changes respectively shower nozzle 2 ' and shower nozzle 2 ' ', similarly the body refuse on b, a direction is cleaned up and gets final product.
From above-mentioned principle, being not difficult, find, when heat-transfer pipe is arranged according to rectangle or Else Rule shape, still can adopt with the similar body refuse cleaning of the present invention ejecting device heat-transfer pipe is cleaned, the angle that only need change simply the axial line angle of shower nozzle front end axial line and rotating shaft gets final product.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the person skilled in the art can understand content of the present invention and implement according to this; can not limit the scope of the invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (6)
1. one kind is cleaned ejecting device for EPR heap type Steam Generators in NPP body refuse, and it is characterized in that: it comprises:
The spray gun connecting rod, be coaxially arranged with rotating power transmission shaft in described spray gun connecting rod;
Three shower nozzles, described three shower nozzles alternately are removably mounted on described spray gun connecting rod end, it comprises nozzle housing, be located at the rotating shaft that nozzle housing central authorities are coaxial with described power transmission shaft and bond connected connects, the shower nozzle front end that seals mutually and be connected with described rotating shaft with described nozzle housing, described shower nozzle front end comprises the punching chamber of offering at the Yan Qi center, perpendicular with described punching chamber and be communicated with the spray orifice of offering, between described spray gun connecting rod and power transmission shaft, between nozzle housing and rotating shaft, be formed with the water stream channel be connected with described punching chamber, in described three shower nozzles, the shower nozzle front end axial line of one of them shower nozzle and the axial line angle of described rotating shaft are 0 °, the angle of the shower nozzle front end axial line of two other shower nozzle and the axial line of described rotating shaft is respectively ± and 60 °.
2. according to claim 1 and 2 it is characterized in that: described power transmission shaft is connected with rotating shaft by spline for EPR heap type Steam Generators in NPP body refuse cleaning ejecting device, and described rotating shaft is connected with the shower nozzle front end by gear pair.
3. according to claim 2 for EPR heap type Steam Generators in NPP body refuse cleaning ejecting device, it is characterized in that: described gear pair adopts bevel gear.
4. according to claim 1 and 2 for EPR heap type Steam Generators in NPP body refuse cleaning ejecting device, it is characterized in that: described spray gun connecting rod is fixed with shower nozzle phase bolt.
5. according to claim 1 and 2 for EPR heap type Steam Generators in NPP body refuse cleaning ejecting device, it is characterized in that: use seal with elastometic washer between described spray gun connecting rod and shower nozzle.
6. according to claim 1 and 2 for EPR heap type Steam Generators in NPP body refuse cleaning ejecting device, it is characterized in that: use packing seal between described nozzle housing and shower nozzle front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310341557.7A CN103406226B (en) | 2013-08-07 | 2013-08-07 | Vapor generator sludge washing nozzle device for EPR (European pressurized reactor) type nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310341557.7A CN103406226B (en) | 2013-08-07 | 2013-08-07 | Vapor generator sludge washing nozzle device for EPR (European pressurized reactor) type nuclear power plant |
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| CN103406226A true CN103406226A (en) | 2013-11-27 |
| CN103406226B CN103406226B (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310341557.7A Active CN103406226B (en) | 2013-08-07 | 2013-08-07 | Vapor generator sludge washing nozzle device for EPR (European pressurized reactor) type nuclear power plant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513389A (en) * | 2016-05-12 | 2017-03-22 | 苏州热工研究院有限公司 | Cleaning device for steam generator and cleaning method |
| CN108266717A (en) * | 2016-12-30 | 2018-07-10 | 核动力运行研究所 | A kind of rinse-system for horizontal steam generator header blowdown cave room |
Citations (4)
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| WO2008037434A1 (en) * | 2006-09-26 | 2008-04-03 | Ideal Standard International Bvba | Pulsating water jet massage assembly for showers and handsprays |
| CN201415170Y (en) * | 2009-06-24 | 2010-03-03 | 扬州恒源自来水喷泉设备有限公司 | One-dimensional digital control multi-headed burner cap |
| CN201423325Y (en) * | 2009-03-04 | 2010-03-17 | 许茜 | High-pressure water dynamic-sealing rotary-cleaning spraying head |
| CN203417802U (en) * | 2013-08-07 | 2014-02-05 | 中广核检测技术有限公司 | Sludge cleaning nozzle device used for steam generator in EPR type nuclear power plant |
-
2013
- 2013-08-07 CN CN201310341557.7A patent/CN103406226B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008037434A1 (en) * | 2006-09-26 | 2008-04-03 | Ideal Standard International Bvba | Pulsating water jet massage assembly for showers and handsprays |
| CN201423325Y (en) * | 2009-03-04 | 2010-03-17 | 许茜 | High-pressure water dynamic-sealing rotary-cleaning spraying head |
| CN201415170Y (en) * | 2009-06-24 | 2010-03-03 | 扬州恒源自来水喷泉设备有限公司 | One-dimensional digital control multi-headed burner cap |
| CN203417802U (en) * | 2013-08-07 | 2014-02-05 | 中广核检测技术有限公司 | Sludge cleaning nozzle device used for steam generator in EPR type nuclear power plant |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513389A (en) * | 2016-05-12 | 2017-03-22 | 苏州热工研究院有限公司 | Cleaning device for steam generator and cleaning method |
| CN106513389B (en) * | 2016-05-12 | 2019-03-26 | 苏州热工研究院有限公司 | A kind of cleaning device and cleaning method of steam generator |
| CN108266717A (en) * | 2016-12-30 | 2018-07-10 | 核动力运行研究所 | A kind of rinse-system for horizontal steam generator header blowdown cave room |
| CN108266717B (en) * | 2016-12-30 | 2023-11-24 | 核动力运行研究所 | Flushing system for drain cavity of collecting pipe of horizontal steam generator |
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| CN103406226B (en) | 2015-06-17 |
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