CN103871507A - Pressurized water reactor nuclear power plant pressurizer spraying apparatus - Google Patents
Pressurized water reactor nuclear power plant pressurizer spraying apparatus Download PDFInfo
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- CN103871507A CN103871507A CN201210536592.XA CN201210536592A CN103871507A CN 103871507 A CN103871507 A CN 103871507A CN 201210536592 A CN201210536592 A CN 201210536592A CN 103871507 A CN103871507 A CN 103871507A
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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 present invention belongs to pressurized water reactor nuclear power plant equipment, and particularly relates to a pressurized water reactor nuclear power plant pressurizer spraying apparatus. According to the pressurized water reactor nuclear power plant pressurizer spraying apparatus, the top of the upper dome of a pressurizer is provided with a manhole assembly, a spraying ring pipe supporting base is fixedly connected with the inner wall of the upper dome of the pressurizer through a surfacing welding boss for ring pipe supporting, a spraying ring pipe supporting pipe is connected with the spraying ring pipe supporting base, a spraying ring pipe is connected with the spraying ring pipe supporting pipe, is connected with a spraying head through a spraying head threaded connection pipe, and is connected with a water inlet pipe through welding, and the water inlet pipe is communicated with a heat shock resistance casting pipe, and is connected with the safety end of a pressurizer spraying pipe connection nozzle through a water inlet pipe supporting boss. The pressurized water reactor nuclear power plant pressurizer spraying apparatus has the following advantages that: the plurality of the spraying heads are arranged on the ring pipe, such that the spraying uniformity can be improved, and the arrangement positions of the spraying heads can be changed according to the actual requirements so as to achieve adjustment on different spraying amounts in different spraying areas; and the spraying head has characteristics of small size, light weight and convenient maintenance and replacement.
Description
Technical field
The invention belongs to a kind of compressed water reactor nuclear power plant, be specifically related to a kind of PWR nuclear power plant voltage stabilizer spray equipment.
Background technology
PWR nuclear power plant voltage stabilizer top is provided with fog-spray nozzle, and cold section by spray pipe with reactor coolant loop is connected.In voltage stabilizer, there is saturated vapour-liquid two-phase, water in reactor coolant loop is that subcooled water is by spray pipe and the fog-spray nozzle that is arranged on voltage stabilizer inside, voltage stabilizer saturated vapor space is sprayed, thereby make saturated vapour condensation, realize the object that reduces voltage stabilizer internal pressure.
Mostly PWR nuclear power plant was to install at voltage stabilizer top a large flow fog-spray nozzle in the past, because of this fog-spray nozzle flow large, the uniformity coefficient of its spray is restricted, and because PWR nuclear power plant often adopts inside, the large flow fog-spray nozzle of solid-cone of blade is set, the architectural characteristic of this type of fog-spray nozzle determines that flow is larger, the blade dimensions of fog-spray nozzle is larger, and the effect of atomization is poorer, and the flow resistance (pressure drop) of fog-spray nozzle is also larger.Meanwhile, larger physical dimension, quality is also larger, has brought certain difficulty to maintain and replace.
Summary of the invention
The object of this invention is to provide a kind of PWR nuclear power plant voltage stabilizer spray equipment, its atomizing effect is good, and the pressure drop of shower nozzle flow resistance is little.
The present invention realizes like this, a kind of PWR nuclear power plant voltage stabilizer spray equipment, the top of voltage stabilizer upper cover is provided with people's aperture member, spraying endless tube supporting seat is supported and is fixedly connected with the inwall of voltage stabilizer upper cover with built-up welding boss by endless tube, spraying endless tube stay pipe is connected with spraying endless tube supporting seat, spraying endless tube is connected with spraying endless tube stay pipe, spraying endless tube is connected with fog-spray nozzle by fog-spray nozzle screw nipple, spraying endless tube and water inlet pipe are by being welded to connect, water inlet pipe and thermal shock sleeve pipe are communicated with, water inlet pipe is connected with voltage stabilizer spraying pressure inlet safe end by water inlet pipe support rim.
Described fog-spray nozzle screw nipple and the two ends of fog-spray nozzle are welded with respectively fog-spray nozzle snap close.
Advantage of the present invention is, 1) multiple fog-spray nozzles are arranged on endless tube, can improve uniform spraying degree, thereby and can realize according to actual needs the adjustment of the different sprays two in different sprays region by changing the position of fog-spray nozzle; 2) under same flow, multiple low discharge fog-spray nozzles can reduce the flow resistance (pressure drop) of spray equipment; 3), in the time not possessing large flow fog-spray nozzle service condition, also can meet the requirement of large flow with the fog-spray nozzle of low discharge; 4) in the time that a fog-spray nozzle lost efficacy, limited to the spray effectiveness affects of voltage stabilizer, voltage stabilizer can also be carried out its system requirements function; 5) fog-spray nozzle size is little, lightweight, and maintain and replace is more convenient.
Brief description of the drawings
Fig. 1 voltage stabilizer spray structure schematic diagram;
Fig. 2 fog-spray nozzle connection schematic diagram;
Fig. 3 is that the A of Fig. 2 is to view;
Fig. 4 endless tube supporting construction schematic diagram of spraying;
Fig. 5 is that the A of Fig. 4 is to view;
Fig. 6 voltage stabilizer spraying plant structural representation.
In figure, 1 people's aperture member, 2 voltage stabilizer upper covers, 3 voltage stabilizer spraying pressure inlet safe ends, 4 thermal shock sleeve pipes, 5 water inlet pipe support rims, 6 water inlet pipes, 7 fog-spray nozzle screw nipples, 8 fog-spray nozzles, 9 spraying endless tubes, 10 endless tubes support uses built-up welding boss, 11 spraying endless tube supporting seats, 12 spraying endless tube stay pipes, 13 fog-spray nozzle snap closes.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail:
As shown in Figure 1, the top of voltage stabilizer upper cover 2 is provided with people's aperture member 1, and manhole is arranged on voltage stabilizer top, can make the parts of changing pass in and out more easily, and can not cause gouge to voltage stabilizer inwall.
As shown in Figure 4, spraying endless tube supporting seat 11 is supported and is fixedly connected with the inwall of voltage stabilizer upper cover 2 with built-up welding boss 10 by endless tube, spraying endless tube stay pipe 12 is connected with spraying endless tube supporting seat 11, spraying endless tube 9 is connected with spraying endless tube stay pipe 12, spraying endless tube 9 is connected with fog-spray nozzle 8 by multiple fog-spray nozzle screw nipples 7, can be according to fog-spray nozzle quantity on voltage stabilizer spraying ring pipe, adopt complete penetraction and fusion in welding fillet weld pattern to weld the screw nipple of same quantity, each screw nipple can be uniform on endless tube, also can carry out according to actual needs not equidistant placement.As shown in Figure 2, after screw nipple and fog-spray nozzle are installed, the fog-spray nozzle snap close 13 that two ends are welded on respectively on screw nipple and fog-spray nozzle can prevent the loosening of fog-spray nozzle.Spraying endless tube 9 and water inlet pipe 6 are by being welded to connect, and water inlet pipe 6 and thermal shock sleeve pipe 4 are communicated with.Water inlet pipe 6 is connected with voltage stabilizer spraying pressure inlet safe end 3 by water inlet pipe support rim 5.
One embodiment of the present invention are as follows, but are not limited only to this embodiment.
Voltage stabilizer cylinder internal diameter 2100(piles postwelding), the maximum mist flow 200m of system requirements
3/ h, when maximum spray flow, pressure drop requires as 0.1MPa.According to the flow of certain pattern fog-spray nozzle and flow resistance parameter, during according to maximum flow, pressure drop requires 0.1MPa, and optional quota constant flow is 25m
3the fog-spray nozzle of/h, the fog-spray nozzle number needing is:
8 fog-spray nozzles need to be installed.
Substantially even because of the inner each region of this voltage stabilizer saturated vapour, therefore 8 fog-spray nozzles are uniform on spraying ring pipe, consider the homogeneity of each fog-spray nozzle flow, as shown in Figure 1,8 fog-spray nozzles are arranged with respect to water inlet pipe span centre.
Manhole is arranged on voltage stabilizer upper cover centre, and voltage stabilizer spraying pressure inlet is arranged on and 45 ° of positions of upper cover center line angle, and spraying ring pipe position of center line is apart from about 650mm position, upper cover center.Selected spraying ring pipe internal diameter is about 3/5 of voltage stabilizer cylinder internal diameter, i.e. spraying ring pipe centerline diameter 1260mm.Spraying ring pipe, according to spray pressure inlet size and thermal shock casing size CS, is selected external diameter 90mm, the ultra-low carbon austenitic stainless steel steel pipe of wall thickness 5mm.Screw nipple is determined according to selected fog-spray nozzle interface size.Stay pipe and supporting seat etc. are according to definite sizes such as spraying ring pipe size and the particular locations in voltage stabilizer, and material is all selected ultra-low carbon austenitic stainless steel.
The present invention is applicable to the voltage stabilizer in PWR nuclear power plant.Voltage stabilizer top is provided with a spraying endless tube, can be according to the stream rated capacity of the total flow of system requirements and each fog-spray nozzle on endless tube, selected multiple fog-spray nozzles (equidistantly or not equidistant) are installed, with respect to the large flow fog-spray nozzle structure in one, voltage stabilizer top, the atomizing effect of each low discharge nozzle is better, the spraying effect of multiple fog-spray nozzles is also more even, the better effects if of condensation step-down.Meanwhile, little compared with its pressure drop of the fog-spray nozzle of low discharge also larger flow fog-spray nozzle, lower to the requirement of system.Meanwhile, little fog-spray nozzle has also reduced difficulty in the maintenance of voltage stabilizer fog-spray nozzle and Renewal process.
Claims (2)
1. a PWR nuclear power plant voltage stabilizer spray equipment, it is characterized in that: the top of voltage stabilizer upper cover (2) is provided with people's aperture member (1), spraying endless tube supporting seat (11) is supported and is fixedly connected with the inwall of voltage stabilizer upper cover (2) with built-up welding boss (10) by endless tube, spraying endless tube stay pipe (12) is connected with spraying endless tube supporting seat (11), spraying endless tube (9) is connected with spraying endless tube stay pipe (12), spraying endless tube (9) is connected with fog-spray nozzle (8) by fog-spray nozzle screw nipple (7), spraying endless tube (9) and water inlet pipe (6) are by being welded to connect, water inlet pipe (6) and thermal shock sleeve pipe (4) are communicated with, water inlet pipe (6) is connected with voltage stabilizer spraying pressure inlet safe end (3) by water inlet pipe support rim (5).
2. a kind of PWR nuclear power plant voltage stabilizer spray equipment as claimed in claim 1, is characterized in that: described fog-spray nozzle screw nipple (7) is welded with respectively fog-spray nozzle snap close (13) with the two ends of fog-spray nozzle (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210536592.XA CN103871507A (en) | 2012-12-13 | 2012-12-13 | Pressurized water reactor nuclear power plant pressurizer spraying apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210536592.XA CN103871507A (en) | 2012-12-13 | 2012-12-13 | Pressurized water reactor nuclear power plant pressurizer spraying apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103871507A true CN103871507A (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210536592.XA Pending CN103871507A (en) | 2012-12-13 | 2012-12-13 | Pressurized water reactor nuclear power plant pressurizer spraying apparatus |
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| CN (1) | CN103871507A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889697A (en) * | 2015-06-19 | 2015-09-09 | 江西洪都航空工业集团有限责任公司 | Liquid spraying direction guide structure |
| CN105788677A (en) * | 2016-05-06 | 2016-07-20 | 上海核工程研究设计院 | Spray nozzle for spray cooling of spent fuel pool of nuclear power plant |
| CN106531247A (en) * | 2016-12-23 | 2017-03-22 | 中国核动力研究设计院 | Spraying type condensation device and reactor simulation test device secondary circuit system formed by same |
| CN110828005A (en) * | 2019-11-08 | 2020-02-21 | 中广核工程有限公司 | Thermal shock prevention sleeve assembly for voltage stabilizer of nuclear power station |
| CN111290443A (en) * | 2020-04-02 | 2020-06-16 | 广西防城港核电有限公司 | Continuous spraying flow control system of nuclear power station voltage stabilizer |
| CN115831403A (en) * | 2023-01-01 | 2023-03-21 | 南通曙光机电工程有限公司 | Cooling spray protection device for nuclear power station voltage stabilizer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5113839A (en) * | 1974-07-26 | 1976-02-03 | Bostik Japan | HOTSUTOMERUTOSETSUCHAKUZAITOFUSOCHI |
| JPS5513829A (en) * | 1978-07-14 | 1980-01-31 | Doryokuro Kakunenryo | Method of preparing surrounding gas in nuclear reactor containment vessel |
| US20030161786A1 (en) * | 2002-02-04 | 2003-08-28 | Bernd Eckardt | Method for the catalytic oxidation of a gas, recombination device for carrying out the method, and system which includes the recombination device |
| CN203026168U (en) * | 2012-12-13 | 2013-06-26 | 中国核动力研究设计院 | Pressure stabilizer spraying device of pressurized water reactor nuclear power plant |
-
2012
- 2012-12-13 CN CN201210536592.XA patent/CN103871507A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5113839A (en) * | 1974-07-26 | 1976-02-03 | Bostik Japan | HOTSUTOMERUTOSETSUCHAKUZAITOFUSOCHI |
| JPS5513829A (en) * | 1978-07-14 | 1980-01-31 | Doryokuro Kakunenryo | Method of preparing surrounding gas in nuclear reactor containment vessel |
| US20030161786A1 (en) * | 2002-02-04 | 2003-08-28 | Bernd Eckardt | Method for the catalytic oxidation of a gas, recombination device for carrying out the method, and system which includes the recombination device |
| CN203026168U (en) * | 2012-12-13 | 2013-06-26 | 中国核动力研究设计院 | Pressure stabilizer spraying device of pressurized water reactor nuclear power plant |
Non-Patent Citations (1)
| Title |
|---|
| 孙中宁: "《核动力设备》", 31 August 2004, article "安全", pages: 104-105 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889697A (en) * | 2015-06-19 | 2015-09-09 | 江西洪都航空工业集团有限责任公司 | Liquid spraying direction guide structure |
| CN105788677A (en) * | 2016-05-06 | 2016-07-20 | 上海核工程研究设计院 | Spray nozzle for spray cooling of spent fuel pool of nuclear power plant |
| CN106531247A (en) * | 2016-12-23 | 2017-03-22 | 中国核动力研究设计院 | Spraying type condensation device and reactor simulation test device secondary circuit system formed by same |
| CN110828005A (en) * | 2019-11-08 | 2020-02-21 | 中广核工程有限公司 | Thermal shock prevention sleeve assembly for voltage stabilizer of nuclear power station |
| CN110828005B (en) * | 2019-11-08 | 2023-09-08 | 中广核工程有限公司 | Nuclear power station voltage stabilizer thermal shock prevention sleeve assembly |
| CN111290443A (en) * | 2020-04-02 | 2020-06-16 | 广西防城港核电有限公司 | Continuous spraying flow control system of nuclear power station voltage stabilizer |
| CN111290443B (en) * | 2020-04-02 | 2023-04-07 | 广西防城港核电有限公司 | Continuous spraying flow control system of nuclear power station voltage stabilizer |
| CN115831403A (en) * | 2023-01-01 | 2023-03-21 | 南通曙光机电工程有限公司 | Cooling spray protection device for nuclear power station voltage stabilizer |
| CN115831403B (en) * | 2023-01-01 | 2023-09-26 | 南通曙光机电工程有限公司 | Cooling spray protection device for nuclear power station voltage stabilizer |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140618 |