CN204555129U - A kind of for the air energy-storing refrigerating system in the master control room of nuclear power station loss of power accident - Google Patents

A kind of for the air energy-storing refrigerating system in the master control room of nuclear power station loss of power accident Download PDF

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Publication number
CN204555129U
CN204555129U CN201520017401.8U CN201520017401U CN204555129U CN 204555129 U CN204555129 U CN 204555129U CN 201520017401 U CN201520017401 U CN 201520017401U CN 204555129 U CN204555129 U CN 204555129U
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China
Prior art keywords
valve
pressure
air
heat exchanger
control room
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Expired - Fee Related
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CN201520017401.8U
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Chinese (zh)
Inventor
李夔宁
王川航
余银生
刘春波
李进
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Chongqing University
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Chongqing University
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Abstract

The utility model relates to a kind of for the air energy-storing refrigerating system in the master control room of nuclear power station loss of power accident.System comprises: pressure-air storage tank (1), stop valve (2), air compressor (3), expansion valve (4), heat exchanger (5), flowmeter (6), pressure gauge heat exchanger (7), temperature point (8), master-control room (9), control valve (10), blowoff valve (11), safety valve (12) forms, the outlet of air compressor (3) left end is connected with pressure-air storage tank (1) left upper end entrance through control valve (10), pressure-air storage tank (1) left upper end is provided with blowoff valve (11), lower-left end and bottom righthand side are respectively equipped with safety valve, upper right side outlet is through stop valve, expansion valve is connected with heat exchanger, flowed into indoor again by flowmeter, at pressure-air storage tank and expansion valve, pressure gauge heat exchanger is equipped with before and after heat exchanger, temperature point.The utility model utilizes the non-active solutions for refrigeration of pressure-air to solve nuclear power station and has an accident under outage situation because power shortage source can not ensure the problem of humiture that master-control room is suitable, oxygen supply deficiency.

Description

A kind of for the air energy-storing refrigerating system in the master control room of nuclear power station loss of power accident
Technical field
The present invention relates to the ad hoc device of nuclear plant safety and refrigeration technology field, particularly a kind of for the air energy-storing refrigerating system in the master control room of nuclear power station loss of power accident.
Background technology
Master control room of nuclear power station is nuclear power station core operation room, in order to ensure that nuclear power station runs the safety of operator when there is emergency episode power-off, a kind of unpowered refrigeration system should be provided, maintaining master-control room environment temperature is in optimum range, and the air after step-down simultaneously can provide required oxygen for distress personnel.
Be applicable to master control room of nuclear power station refrigeration system ice-reserving refrigeration at present as the ice-reserving refrigeration system in patent CN101532709 and the electric power storage refrigeration system in patent CN103411268A, but ice-reserving refrigeration daily need refrigeration unit maintains the low temperature of agent for storage of coldness, and Long-Time Service needs periodic maintenance; The refrigeration of electric power storage simultaneously must be equipped with high-capacity non-explosive battery, and battery often needs to change, and refrigeration performance is affected by the external environment larger.Therefore guarantee that the nuclear power station master control room of nuclear power station after power-off that has an accident runs the safety of operator 72h, ensure humiture that master-control room is suitable, solve oxygen supply not enough, reduce the difficult problem that those skilled in the art face become to the dependence of environment.
Summary of the invention
The object of the present invention is to provide a kind of for the air energy-storing refrigerating system in the master control room of nuclear power station loss of power accident, after the nuclear power station generation loss of power accident, utilizing the non-active solutions for refrigeration of pressure-air to solve nuclear power station to have an accident under outage situation because power shortage source can not ensure the problem of humiture that master-control room is suitable, oxygen supply deficiency, guarantees that the nuclear power station master control room of nuclear power station after power-off that has an accident runs the safety of operator 72h.
Described pressure-air refrigeration system, is made up of pressure-air storage tank (1), stop valve (2), air compressor (3), expansion valve (4), heat exchanger (5), flowmeter (6), pressure gauge heat exchanger (7), temperature point (8), master-control room (9), control valve (10), blowoff valve (11), safety valve (12).
Realize technical scheme of the present invention: the outlet of air compressor (3) left end is connected with pressure-air storage tank (1) left upper end entrance through control valve (10), pressure-air storage tank (1) left upper end is provided with blowoff valve (11), lower-left end and bottom righthand side are respectively equipped with safety valve (12), upper right side outlet is through stop valve (2), expansion valve (4) is connected with heat exchanger (5) left end entrance, right-hand member outlet is flowed into indoor (9) by flowmeter (6) again, at pressure-air storage tank and expansion valve, pressure gauge heat exchanger (7) is equipped with before and after heat exchanger, temperature point (8).
Described pressure-air refrigeration system, is characterized in that: to be stored in pressure-air in air tank as cold-producing medium, and heat exchanger carries out exchange heat by the mode of heat convection and radiation heat transfer and master control room air.
Effect of the present invention: pressure-air throttling expansion refrigeration is used for the feasible program of master control room of nuclear power station, both can realize refrigeration, and the air of discharging can be breathed by staff.In addition, this system has provides the advantages such as power, cost are low, easy to maintenance without the need to the external world, improves the reliability of system cloud gray model.Analytical calculation shows, is 23.4MPa for ensureing that control room air quality has 32 pressure, volume 1.48m 3air bottle, be full of after air by discharge 154Nm per hour 3calculating can use the requirement of shelter of 72h.
Accompanying drawing explanation
Fig. 1 is of the present invention a kind of for the air energy-storing refrigerating system schematic in the master control room of nuclear power station loss of power accident.
In figure: 1. pressure-air storage tank; 2. stop valve; 3. air compressor; 4. expansion valve; 5. heat exchanger; 6. flowmeter; 7. pressure gauge heat exchanger; 8. temperature point; 9. master-control room; 10. control valve; 11. blowoff valves; 12. safety valves.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in more detail.
Pressure-air refrigeration system, is taken into account pipeline valve accessory formed by pressure-air storage tank, air compressor machine, expansion valve, heat exchanger, temperature and pressure transmitter, flow.Heat exchanger carries out exchange heat by the mode of heat convection and radiation heat transfer and master control room air.
Air compressor machine is that air reservoir stores gas and stores full, and after reaching pressure requirements, air compressor machine can be closed automatically, then, after the nuclear power station generation loss of power accident, opens the stop valve on air tank, air feed in master-control room.Open indoor expansion valve and controlling opening of valve simultaneously, get final product the gas pressure after variable expansion valve.Pressure-air flows through expansion valve, after throttling, temperature and pressure reduces, and the gas after decrease temperature and pressure enters heat exchanger, carries out heat exchange at heat exchanger and room air, realize refrigeration after room air cooling, the low-pressure air of heat exchanger exit directly freezes discharged to laboratory simultaneously.
For ensureing control room air quality and to have 32 pressure be 23.4MPa, volume 1.48m 3air bottle, be full of after air by discharge 154Nm per hour 3calculating can use 72h, just can guarantee the master-control room normal humiture of three days.

Claims (1)

1., for the air energy-storing refrigerating system in the master control room of nuclear power station loss of power accident, comprise pressure-air storage tank (1), stop valve (2), air compressor (3), expansion valve (4), heat exchanger (5), flowmeter (6), pressure gauge heat exchanger (7), temperature point (8), master-control room (9), control valve (10), blowoff valve (11), safety valve (12) forms, it is characterized in that: the outlet of air compressor (3) left end is connected with pressure-air storage tank (1) left upper end entrance through control valve (10), pressure-air storage tank (1) left upper end is provided with blowoff valve (11), lower-left end and bottom righthand side are respectively equipped with safety valve (12), and upper right side outlet is through stop valve (2), expansion valve (4) is connected with heat exchanger (5), then is flowed into indoor (9), at pressure-air storage tank and expansion valve by flowmeter (6), pressure gauge heat exchanger (7) is equipped with before and after heat exchanger, temperature point (8).
CN201520017401.8U 2015-01-12 2015-01-12 A kind of for the air energy-storing refrigerating system in the master control room of nuclear power station loss of power accident Expired - Fee Related CN204555129U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520017401.8U CN204555129U (en) 2015-01-12 2015-01-12 A kind of for the air energy-storing refrigerating system in the master control room of nuclear power station loss of power accident

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520017401.8U CN204555129U (en) 2015-01-12 2015-01-12 A kind of for the air energy-storing refrigerating system in the master control room of nuclear power station loss of power accident

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CN204555129U true CN204555129U (en) 2015-08-12

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CN201520017401.8U Expired - Fee Related CN204555129U (en) 2015-01-12 2015-01-12 A kind of for the air energy-storing refrigerating system in the master control room of nuclear power station loss of power accident

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104534601A (en) * 2015-01-12 2015-04-22 重庆大学 Air energy storage and refrigerating system used in power outage accident of nuclear power plant main control room

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104534601A (en) * 2015-01-12 2015-04-22 重庆大学 Air energy storage and refrigerating system used in power outage accident of nuclear power plant main control room

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150812

Termination date: 20180112

CF01 Termination of patent right due to non-payment of annual fee