CN202948740U - AP1000 passive afterheat discharge heat exchanger of nuclear power plant - Google Patents
AP1000 passive afterheat discharge heat exchanger of nuclear power plant Download PDFInfo
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- CN202948740U CN202948740U CN201220715973XU CN201220715973U CN202948740U CN 202948740 U CN202948740 U CN 202948740U CN 201220715973X U CN201220715973X U CN 201220715973XU CN 201220715973 U CN201220715973 U CN 201220715973U CN 202948740 U CN202948740 U CN 202948740U
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- heat exchanger
- water chamber
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- nuclear power
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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 utility model discloses an AP1000 passive afterheat discharge heat exchanger of a nuclear power plant, which belongs to the technical field of a tubular heat exchanger of the nuclear power plant, and in particular relates to distribution of heat exchange pipelines. The AP1000 passive afterheat discharge heat exchanger mainly comprises an inlet water chamber seal head, a tube sheet, a heat transfer tube and an outlet water chamber seal head. The heat transfer tube is divided into a vertical section and a horizontal section; the two ends of the vertical section are both connected with the horizontal section; and the inlet water chamber seal head and the outlet water chamber seal head are respectively connected with the horizontal section of the heat transfer tube by the tube sheet. The AP1000 passive afterheat discharge heat exchanger is characterized in that the heat transfer tube adopts flat distribution mode in both the vertical section and the horizontal section. The inlet water chamber seal head and the outlet water chamber seal head are horizontally distributed on the wall of an internal material exchange water tank. The afterheat discharge heat exchanger disclosed by the utility model can enhance the heat exchange capability of the existing AP1000 passive afterheat discharge heat exchanger of the nuclear power plant, and increase the natural circulation head pressure, and is simple in structure.
Description
Technical field
The utility model belongs to nuclear power plant's tubular heat exchanger equipment technical field, and particularly a kind of AP1000 nuclear power plant passive residual heat removal heat exchanger, relate in particular to heat exchange pipeline and arrange.
Background technology
At present, the heat exchange pipeline of AP1000 nuclear power plant passive residual heat removal heat exchanger all adopts the circular arrangement mode with vertical direction in the horizontal direction, and namely every adjacent four heat exchanger tubes adopt rectangular arrangement, whole consist of round-shaped.Always be about 11.3m, vertical part is 5.3m approximately, and horizontal component is 3m approximately.The heat-transfer pipe tube pitch is 38mm.Under accident conditions, the Natural Circulation pressure head that utilizes the density difference between fluid to form, the reactor-loop portion cooling agent passive residual heat removal heat exchanger of flowing through from top to bottom flows into the steam generator low head at last.But under arrangement, higher the closer to the upper flow temperature at horizontal segment like this, less with the heat exchanger tube temperature difference, and may relate to stream-liquid two-phase flow, the coefficient of heat transfer is little; At vertical section, peripheral conduits heat exchange meeting affects the heat transfer effect of intermediate conduit, and namely in each row circulation passage, higher the closer to circular central portion bit stream temperature, less with the heat exchanger tube temperature difference, the coefficient of heat transfer is less, and heat pipe is more.Total heat exchange amount and Natural Circulation pressure head have been reduced like this.
The utility model content
The purpose of this utility model is to provide a kind of arrangement of passive residual heat removal heat exchanger heat exchange pipeline, with the exchange capability of heat that strengthens existing AP1000 nuclear power plant passive residual heat removal heat exchanger and improve the Natural Circulation pressure head.
The technical scheme that its technical matters that solves the utility model adopts is:
A kind of AP1000 nuclear power plant passive residual heat removal heat exchanger is provided, mainly include saliva chamber end socket, tube sheet, heating surface bank, outlet water chamber head, heating surface bank is divided into vertical section and horizontal segment, vertically the two ends of section all connect horizontal segment, the entrance water chamber head is connected with the horizontal segment of heating surface bank by tube sheet respectively with the outlet water chamber head, it is characterized in that: heating surface bank all adopts flat arrangement at horizontal segment and vertical section.
On above-mentioned improved basis, also can in the situation that the heating surface bank total length be constant, suitably increase horizontal section length and shorten vertical segment length.Be heating surface bank overall length 11.3m, vertically segment length is less than 5.3m.
Entrance water chamber head and outlet water chamber head lateral arrangement are on built-in material-changing water tank pool wall.Entrance water chamber head and outlet water chamber head with the flat layout of heating surface bank adapts can reduce as far as possible local resistance loss, and flow can be averagely allocated to each heat exchanger tube.
But can according to space size appropriate change heat-transfer pipe internal diameter, length, quantity and tube pitch from.
In described heating surface bank, heat exchanger tube is C type heat exchanger tube.
The beneficial effects of the utility model are: the residual heat removal exchanger that the utility model provides can strengthen the exchange capability of heat of existing AP1000 nuclear power plant passive residual heat removal heat exchanger and improve the Natural Circulation pressure head, and is simple in structure.Adopt this arrangement to draw through numerical simulation calculation: can strengthen the heat transfer effect of passive residual heat removal heat exchanger, thereby improve the Natural Circulation pressure head.
Description of drawings
Fig. 1 is present AP1000 nuclear power plant passive residual heat removal heat converter structure schematic diagram;
Fig. 2 is that present AP1000 nuclear power plant passive residual heat removal heat transfering tube of heat exchanger bundle is arranged schematic diagram (1/2);
Fig. 3 is the heat exchanger three-dimensional structure schematic diagram that the utility model provides;
Fig. 4 is the left schematic diagram of the heat exchanger that provides of the utility model embodiment 1;
Fig. 5 is the front view of the heat exchanger that provides of the utility model embodiment 1;
Fig. 6 is the vertical view of the heat exchanger that provides of the utility model embodiment 1;
1. entrances in figure, 2. entrance water chamber head, 3. outlet water chamber head, 4. outlet, 5. manhole, 6. tube sheet, 7. heating surface bank, 8. heating surface bank supporting, 9. casing frame, 10. bottom supporting, 11. built-in material-changing water tank (IRWST) tops, 12.IRWST wall, 13.IRWST base plate.
Embodiment
The following examples can make those skilled in the art more fully understand the utility model, but limit never in any form the utility model.
Prototype:
As shown in Figure 1, at present AP1000 nuclear power plant passive residual heat removal heat exchanger mainly includes saliva chamber end socket 2, tube sheet 6, heating surface bank 7, outlet water chamber head 3 and some accessories.Entrance water chamber head 2 and outlet water chamber head 3 integral body are all semi-spherical shape, all pass through tube sheet 6 and are connected with heating surface bank 7.Arrange entrance 1 and manhole 5 on entrance water chamber head 2, arranged outlet 4 and manhole 5 on outlet water chamber head 3.
As shown in Figure 2, the spread geometry of AP1000 nuclear power plant's passive residual heat removal heat transfer tube bundle horizontal segment tube bank at present and vertical section is all rounded.Only shown the arrangement of half tube bank in figure, second half tube bank is symmetric, heat-transfer pipe external diameter 19mm, and the heat-transfer pipe tube pitch is 38mm, altogether 688 heat-transfer pipes.Under this arrangement, the heat transfer effect of peripheral conduits heat exchange meeting image intermediate conduit has reduced total heat exchange amount and Natural Circulation pressure head.
Improve design:
As Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, the present embodiment provides AP1000 nuclear power plant passive residual heat removal heat exchanger, general layout is similar with present AP1000 nuclear power plant passive residual heat removal heat exchanger general layout, mainly includes saliva chamber end socket 2, tube sheet 6, heating surface bank 7, outlet water chamber head 3.Heating surface bank is divided into vertical section and horizontal segment, and vertically the two ends of section all connect horizontal segment, and entrance water chamber head 2 and exporting on water chamber head 3 is connected by the horizontal segment of tube sheet 6 with heating surface bank 7 respectively.Entrance water chamber head 2 inlet portings 1, on outlet water chamber head 3, outlet 4 is set, compare with present AP1000 nuclear power plant passive residual heat removal heat exchanger, the AP1000 nuclear power plant passive residual heat removal heat transfering tube of heat exchanger bundle of the present embodiment horizontal segment and vertically section all adopt flat arrangement.
In described heating surface bank, heat exchanger tube is C type heat exchanger tube.
But can according to space size appropriate change heat-transfer pipe internal diameter, length, quantity and tube pitch from.
Entrance water chamber head and outlet water chamber head lateral arrangement adapting to the flat layout of heating surface bank, and can be averagely allocated to flow each heat exchanger tube on built-in material-changing water tank pool wall.
On above-mentioned improved basis, also can in the situation that the heating surface bank total length be constant, suitably increase horizontal section length and shorten vertical segment length.Be heating surface bank overall length 11.3m, vertically segment length is less than 5.3m.For example: vertically segment length is 3.3m, and horizontal section length is 4 meters.
The above; it is only the better embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement are within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (4)
1. AP1000 nuclear power plant passive residual heat removal heat exchanger, mainly include saliva chamber end socket, tube sheet, heating surface bank, outlet water chamber head, heating surface bank is divided into vertical section and horizontal segment, vertically the two ends of section all connect horizontal segment, the entrance water chamber head is connected with the horizontal segment of heating surface bank by tube sheet respectively with the outlet water chamber head, it is characterized in that: heating surface bank all adopts flat arrangement at horizontal segment and vertical section.
2. heat exchanger according to claim 1 is characterized in that: heating surface bank overall length 11.3m, vertically segment length is less than 5.3m.
3. heat exchanger according to claim 1 is characterized in that: entrance water chamber head and outlet water chamber head lateral arrangement are on built-in material-changing water tank pool wall.
4. heat exchanger according to claim 1, it is characterized in that: in described heating surface bank, heat exchanger tube is C type heat exchanger tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220715973XU CN202948740U (en) | 2012-12-21 | 2012-12-21 | AP1000 passive afterheat discharge heat exchanger of nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220715973XU CN202948740U (en) | 2012-12-21 | 2012-12-21 | AP1000 passive afterheat discharge heat exchanger of nuclear power plant |
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| CN202948740U true CN202948740U (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220715973XU Expired - Fee Related CN202948740U (en) | 2012-12-21 | 2012-12-21 | AP1000 passive afterheat discharge heat exchanger of nuclear power plant |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617815A (en) * | 2013-12-05 | 2014-03-05 | 哈尔滨工程大学 | Passive residual heat exhausting system of pressurized water reactor nuclear power plant |
| CN104078086A (en) * | 2014-06-04 | 2014-10-01 | 中国核电工程有限公司 | Active and passive combined containment sump water cooling system |
| CN106558350A (en) * | 2016-11-25 | 2017-04-05 | 中国核动力研究设计院 | A kind of inner fin heat exchanger |
| CN108154941A (en) * | 2016-12-05 | 2018-06-12 | 国家电投集团科学技术研究院有限公司 | The external air cooler of containment vessel |
| CN108630329A (en) * | 2017-03-24 | 2018-10-09 | 国家电投集团科学技术研究院有限公司 | Containment built-in heat exchanger |
| CN109387089A (en) * | 2018-10-17 | 2019-02-26 | 中广核工程有限公司 | The passive condenser of nuclear power plant |
| CN112700894A (en) * | 2020-12-10 | 2021-04-23 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Passive residual heat removal condenser and mounting structure thereof |
| CN108630329B (en) * | 2017-03-24 | 2024-05-31 | 国家电投集团科学技术研究院有限公司 | Built-in heat exchanger of containment |
-
2012
- 2012-12-21 CN CN201220715973XU patent/CN202948740U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617815A (en) * | 2013-12-05 | 2014-03-05 | 哈尔滨工程大学 | Passive residual heat exhausting system of pressurized water reactor nuclear power plant |
| CN104078086A (en) * | 2014-06-04 | 2014-10-01 | 中国核电工程有限公司 | Active and passive combined containment sump water cooling system |
| CN106558350A (en) * | 2016-11-25 | 2017-04-05 | 中国核动力研究设计院 | A kind of inner fin heat exchanger |
| CN108154941A (en) * | 2016-12-05 | 2018-06-12 | 国家电投集团科学技术研究院有限公司 | The external air cooler of containment vessel |
| CN108630329A (en) * | 2017-03-24 | 2018-10-09 | 国家电投集团科学技术研究院有限公司 | Containment built-in heat exchanger |
| CN108630329B (en) * | 2017-03-24 | 2024-05-31 | 国家电投集团科学技术研究院有限公司 | Built-in heat exchanger of containment |
| CN109387089A (en) * | 2018-10-17 | 2019-02-26 | 中广核工程有限公司 | The passive condenser of nuclear power plant |
| WO2020077757A1 (en) * | 2018-10-17 | 2020-04-23 | 中广核工程有限公司 | Passive condenser for nuclear power plant |
| CN109387089B (en) * | 2018-10-17 | 2020-06-26 | 中广核工程有限公司 | Passive condenser of nuclear power plant |
| CN112700894A (en) * | 2020-12-10 | 2021-04-23 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Passive residual heat removal condenser and mounting structure thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20161221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |