CN103868048B - Primary side of steam generator drying system - Google Patents
Primary side of steam generator drying system Download PDFInfo
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- CN103868048B CN103868048B CN201210550406.8A CN201210550406A CN103868048B CN 103868048 B CN103868048 B CN 103868048B CN 201210550406 A CN201210550406 A CN 201210550406A CN 103868048 B CN103868048 B CN 103868048B
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Abstract
The invention belongs to steam generator drying technology field, be specifically related to primary side of steam generator drying system.Primary side of steam generator drying system of the present invention, comprises drying unit, for the gas through heating is inputed to steam generator, also comprises air cleaning unit, carries out exhausting and filtration for the waste gas produced steam generator.The primary side of steam generator drying unit that the invention solves current nuclear power station only has drying function, is difficult to the technical problem of the waste gas that steam generator produces being carried out to exhausting and filtration.The present invention not only has drying function, can also carry out exhausting and filtration, directly can be discharged into air, reduce costs, raise the efficiency the waste gas that steam generator produces.
Description
Technical field
The invention belongs to steam generator drying technology field, be specifically related to primary side of steam generator drying system.
Background technology
Between nuclear power plant's overhaul time, the maintenance that primary side of steam generator arranges comprises heat-transfer pipe vortex inspection and plugging etc., and primary side of steam generator inwall is adsorbed with the radioactive water of certain mass, for ensureing carrying out smoothly of eddy current inspection and plugging, require to use special equipment to carry out drying to working region, and steam generator air outlet slit is bled and filters, flow into air to avoid radioactive grain.
The primary side of steam generator drying unit of current nuclear power station is only provided with independent drying function, the waste gas be difficult to steam generator produces carries out exhausting and filtration, pollution control device SAS must be built assisted the function of exhausting, filtration in scene, increase R&D costs, reduce operating efficiency.
Summary of the invention
The technical problem to be solved in the present invention is: the primary side of steam generator drying unit of nuclear power station only has drying function at present, and the waste gas be difficult to steam generator produces carries out exhausting and filtration.
Technical scheme of the present invention is as described below:
A kind of primary side of steam generator drying system, comprises drying unit, for the gas through heating is inputed to steam generator, also comprises air cleaning unit, carries out exhausting and filtration for the waste gas produced steam generator.
Preferably,
Described drying unit comprises drying module, and drying module comprises air blast and heater, and the gas that air blast produces inputs to a manhole of steam generator by the heating of heater.
Described air blast and heater can realize chain, and when namely air blast is out of service, heater is out of service.
Described heater preferably adopts industrial electro heater strip.Described industrial electro heater strip can comprise organizes heater strip more.
Described drying unit can also comprise oven dry control module, for controlling air blast and heater realizes following functions: the start and stop controlling air blast and heater; To monitor and whether show heater hot-blast outlet place hot blast temperature up to standard.
Drying control module can by arranging thermocouple monitoring heater hot-blast outlet place hot blast temperature at heater hot-blast outlet place.Dry control module according to hot device hot-blast outlet place hot blast temperature situation, control the heater strip group number carrying out heating.
Described air cleaning unit comprises filter and air-introduced machine, and the waste gas that steam generator exports by air-introduced machine is extracted out, and be provided with filter therebetween, the filter medium of filter can be radioaerosol.
Described filter choosing adopts double-stage filtering, namely comprises roughing efficiency air filter and high efficiency particulate air filter: roughing efficiency air filter filter bores is large, and filtering accuracy is low, for filtering the exhaust gas particle of larger volume; High efficiency particulate air filter filter bores is little, and filtering accuracy is high, for filtering the exhaust gas particle of smaller size smaller.
Described drying unit can all adopt bellows to be connected with steam generator, air cleaning unit with steam generator.The preferred diameter of described bellows is 150mm, can bears 120 DEG C of high temperature.
Beneficial effect of the present invention is:
(1) primary side of steam generator drying system of the present invention not only has drying function, can also carry out exhausting and filtration, directly can be discharged into air, reduce costs, raise the efficiency the waste gas that steam generator produces;
(2) the existing pollution control device SAS device for exhausting purification, for fixed system, need to adopt special jockey to connect the steam generator of long distance work, and primary side of steam generator drying system of the present invention entirety can move to working site easily, reduce costs, raise the efficiency;
(3) primary side of steam generator drying system of the present invention can adopt polytype connecting interface according to the actual requirements, and versatility is good.
Accompanying drawing explanation
Fig. 1 is primary side of steam generator drying system schematic diagram of the present invention.
1-air blast, 2-heater, 3-bellows, 4-dries control module, 5-air-introduced machine, 6-roughing efficiency air filter, 7-high efficiency particulate air filter, 8-steam generator.
Detailed description of the invention
Below in conjunction with drawings and Examples, primary side of steam generator drying system of the present invention is described in detail.
Primary side of steam generator drying system of the present invention comprises drying unit and air cleaning unit, and drying unit is used for the gas through heating to input to steam generator 8, and the waste gas that air cleaning unit is used for steam generator 8 produces carries out exhausting and filtration.
Drying unit comprises drying module and dries control module 4.
Wherein, drying module comprises air blast 1 and heater 2, and the gas that air blast 1 produces inputs to a manhole of steam generator 8 by the heating of heater 2.
In the present embodiment, air blast 1 and heater 2 realize chain, and in air blast 1 stopping time, heater 2 stops, and avoids bringing-up section to cross cause thermal damage.
In the present embodiment, it is as shown in the table for drying module important technological parameters:
Table 1 drying module important technological parameters
| Title | Parameter |
| Heater 2 heating power | 9KW |
| Air blast 1 blow rate required | 1380m 3/h |
| Air blast 1 power | 750W |
In the present embodiment, described heater 2 adopts industrial electro heater strip.
Drying control module 4 for controlling air blast 1 and heater 2, can following functions be realized:
(1) start and stop of air blast 1 and heater 2 are controlled;
(2) heater 2 hot-blast outlet place arranges thermocouple, dries control module 4 Real-Time Monitoring and whether show heater 2 hot-blast outlet place hot blast temperature up to standard;
(3) in the present embodiment, heater 2 is divided into three sections of controls, and namely heater 2 is made up of three groups of heater strips, dries control module 4 according to the monitoring result of thermocouple, controls the heater strip group number carrying out heating.As when temperature is lower than 50 DEG C, three groups of heater strips heat; When temperature is in 50 DEG C ~ 55 DEG C, two groups of heater strips heat; When temperature is higher than 60 DEG C, one group of heater strip heats.
Air cleaning unit comprises filter and air-introduced machine 5, and the waste gas that steam generator 8 exports by air-introduced machine 5 is extracted out, is provided with filter therebetween.
Described filter connects another manhole of steam generator 8, and it can carry out purified treatment by waste gas of exporting of steam generator 8, makes the gaseous radioactivity of discharge in safe range, reaches filtration, purification object.Filter in the present embodiment adopts double-stage filtering, namely roughing efficiency air filter 6 and high efficiency particulate air filter 7 is comprised: roughing efficiency air filter 6 filter bores is large, filtering accuracy is low, for filtering the exhaust gas particle of larger volume, adopts Henan nuclear engineering air purifying process Co., Ltd ZC01 type filter in the present embodiment; High efficiency particulate air filter 7 filter bores is little, and filtering accuracy is high, for filtering the exhaust gas particle of smaller size smaller, adopts Henan nuclear engineering air purifying process Co., Ltd YM01 type filter in the present embodiment.
In the present embodiment, the important technological parameters of air cleaning unit is as shown in table 2:
Table 2 air purifier design parameter
In the present embodiment, drying unit all adopts bellows 3 to be connected with steam generator 8, air cleaning unit with steam generator 8, preferred diameter 150mm, bears the bellows 3 of 120 DEG C of high temperature.
During primary side of steam generator drying system work of the present invention, first start air cleaning unit, rear startup drying unit; First drying unit is closed, rear closedown air cleaning unit after operation to be dried completes.
Claims (13)
1. a primary side of steam generator drying system, comprise drying unit, for the gas through heating is inputed to steam generator (8), it is characterized in that: also comprise air cleaning unit, carry out exhausting and filtration for the waste gas produced steam generator (8).
2. primary side of steam generator drying system according to claim 1, it is characterized in that: described drying unit comprises drying module, drying module comprises air blast (1) and heater (2), and the gas that air blast (1) produces inputs to a manhole of steam generator (8) by the heating of heater (2).
3. primary side of steam generator drying system according to claim 2, it is characterized in that: described air blast (1) and heater (2) realize chain, namely, when air blast (1) is out of service, heater (2) is out of service.
4. primary side of steam generator drying system according to claim 2, is characterized in that: described heater (2) adopts industrial electro heater strip.
5. primary side of steam generator drying system according to claim 4, is characterized in that: described industrial electro heater strip comprises organizes heater strip more.
6. primary side of steam generator drying system according to claim 2, it is characterized in that: described drying unit also comprises dries control module (4), realizing following functions for controlling air blast (1) with heater (2): the start and stop controlling air blast (1) and heater (2); To monitor and whether show heater (2) hot-blast outlet place hot blast temperature up to standard.
7. primary side of steam generator drying system according to claim 6, is characterized in that: dry control module (4) by arranging thermocouple monitoring heater (2) hot-blast outlet place hot blast temperature at heater (2) hot-blast outlet place.
8. primary side of steam generator drying system according to claim 4, it is characterized in that: described drying unit also comprises dries control module (4), realizing following functions for controlling air blast (1) with heater (2): the start and stop controlling air blast (1) and heater (2); To monitor and whether show heater (2) hot-blast outlet place hot blast temperature up to standard.
9. primary side of steam generator drying system according to claim 8, is characterized in that: dry control module (4) according to heater (2) hot-blast outlet place hot blast temperature situation, control the heater strip group number carrying out heating.
10. primary side of steam generator drying system according to claim 1, it is characterized in that: described air cleaning unit comprises filter and air-introduced machine (5), the waste gas that steam generator (8) exports by air-introduced machine (5) is extracted out, therebetween be provided with filter, the filter medium of filter is radioaerosol.
11. primary side of steam generator drying systems according to claim 10, it is characterized in that: described filter adopts double-stage filtering, namely roughing efficiency air filter (6) and high efficiency particulate air filter (7) is comprised: roughing efficiency air filter (6) filter bores is large, filtering accuracy is low, for filtering the exhaust gas particle of larger volume; High efficiency particulate air filter (7) filter bores is little, and filtering accuracy is high, for filtering the exhaust gas particle of smaller size smaller.
12. primary side of steam generator drying systems according to claim 1, is characterized in that: described drying unit all adopts bellows (3) to be connected with steam generator (8), air cleaning unit with steam generator (8).
13. primary side of steam generator drying systems according to claim 12, is characterized in that: described bellows (3) diameter is 150mm, can bears 120 DEG C of high temperature.
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| CN201210550406.8A CN103868048B (en) | 2012-12-17 | 2012-12-17 | Primary side of steam generator drying system |
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| CN201210550406.8A CN103868048B (en) | 2012-12-17 | 2012-12-17 | Primary side of steam generator drying system |
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| CN103868048B true CN103868048B (en) | 2015-09-30 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105758161B (en) * | 2016-02-25 | 2019-01-08 | 苏州热工研究院有限公司 | A kind of drying system and furnace drying method for steam generator secondary side tube sheet |
| CN106092461B (en) * | 2016-05-17 | 2019-04-26 | 中广核检测技术有限公司 | Nuclear boiler heat-transfer pipe helium mass spectrum leak detection primary side purge system |
| CN109166641B (en) * | 2018-09-30 | 2020-09-18 | 岭东核电有限公司 | Low-level radioactive waste gas treatment system in lead bismuth reactor |
| CN111351342A (en) * | 2018-12-21 | 2020-06-30 | 核动力运行研究所 | Compact steam generator secondary side tube sheet drying device |
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| CN101497080A (en) * | 2008-01-30 | 2009-08-05 | 亚历山大·切特施 | Method and device for cleaning contaminated materials |
| CN202329039U (en) * | 2011-11-25 | 2012-07-11 | 广东致远新材料有限公司 | Fluorine removing and drying device |
| CN203024129U (en) * | 2012-12-17 | 2013-06-26 | 核动力运行研究所 | Steam generator primary side drying system |
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| US3544424A (en) * | 1966-12-28 | 1970-12-01 | Siemens Ag | Nuclear power plant with wet-steam generator and steam drying system |
| JPH11304992A (en) * | 1998-04-17 | 1999-11-05 | Toshiba Corp | Turbine equipment for power generation |
| JP2005003598A (en) * | 2003-06-13 | 2005-01-06 | Nippon Rensui Co Ltd | Desalination tower of mix bed type in pressurized water nuclear power plant, and operation method thereof |
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