CN103353606B - Nuclear power plant's chimney gaseous effluent sample representation simulation test ventilation unit - Google Patents
Nuclear power plant's chimney gaseous effluent sample representation simulation test ventilation unit Download PDFInfo
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- CN103353606B CN103353606B CN201310251537.0A CN201310251537A CN103353606B CN 103353606 B CN103353606 B CN 103353606B CN 201310251537 A CN201310251537 A CN 201310251537A CN 103353606 B CN103353606 B CN 103353606B
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Abstract
The invention belongs to nuclear power plant's heating ventilation and air-conditioning technical, be specifically related to a kind of nuclear power plant chimney gaseous effluent sample representation simulation test ventilation unit.Its structure comprises at least one and to be connected air intake branch road with test chimney bottom, described air intake branch road is provided with frequency conversion fan, the upstream air intake branch road of frequency conversion fan is provided with filter box-body, the downstream air intake branch road of frequency conversion fan is provided with non-return valve and adjusting air valve, and each parts on air intake branch road are interconnected by airduct.Structure of the present invention is simple, easy to operate, meets the requirement of gas sampling system scale model tests completely.
Description
Technical field
The invention belongs to nuclear power plant's heating ventilation and air-conditioning technical, be specifically related to a kind of nuclear power plant chimney gaseous effluent sample representation simulation test ventilation unit.
Background technology
In order to assess the impact of nuclear facilities on surrounding environment, laws and regulations requirement, radioactivity monitoring must be carried out to nuclear facilities effluent.The radioactive effluent of nuclear facilities is divided into gas to carry and liquid effluent two kinds, wherein Airborne Effluent mainly by pipeline or smoke stack emission in environment.Nuclear facilities is provided with gas sampling system usually, to run continuous samples measurement to Airborne Effluent.Because the distribution of radiomaterial in pipeline or chimney flow field may be uneven, whether the sample therefore obtained is representative, will directly affect the accuracy of effluent measurement.
In order to obtain representative sample, new edition standard ISO 2889-2010 mainly designs two aspects and proposes quantitative technical requirement from sample position and sampling system.The sampling system of nuclear facilities, needs through a series of test, when test findings meets the quantitative target of this standard, just can think that sampling system meets the requirement of this standard.
Because the air draft chimney size of reality is larger, site test is comparatively complicated, and other conditions restriction of nuclear power plant can be subject to, therefore before carrying out site test, can first proportion of carrying out model test, this just needs heating ventilation and air-conditioning specialty according to the actual conditions of nuclear power station air draft chimney and the needs of Radiation monitoring, determines size and the test ventilation unit of scale model; Provided by the Flow Field Calculation (CFD) of chimney simultaneously and can reach well-mixed approximate region, thus simplify site test.
Summary of the invention
The object of the present invention is to provide a kind of nuclear power plant chimney gaseous effluent sample representation simulation test ventilation unit, to meet the requirement of gas sampling system scale model tests.
Technical scheme of the present invention is as follows: a kind of nuclear power plant chimney gaseous effluent sample representation simulation test ventilation unit, comprise at least one to be connected air intake branch road with test chimney bottom, described air intake branch road is provided with frequency conversion fan, the upstream air intake branch road of frequency conversion fan is provided with filter box-body, the downstream air intake branch road of frequency conversion fan is provided with non-return valve and adjusting air valve, and each parts on air intake branch road are interconnected by airduct.
Further, nuclear power plant as above chimney gaseous effluent sample representation simulation test ventilation unit, wherein, described air intake branch road is also provided with pressure measuring instruments and flow measurement instrument.
Further, nuclear power plant as above chimney gaseous effluent sample representation simulation test ventilation unit, wherein, comprises low efficient filter, highly effective particle filter in described filter box-body.
Further, nuclear power plant as above chimney gaseous effluent sample representation simulation test ventilation unit, wherein, is provided with test hand hole at the differing heights of test chimney.
Further, nuclear power plant as above chimney gaseous effluent sample representation simulation test ventilation unit, wherein, comprises two or more air intake branch road, and each bar air intake branch circuit parallel connection is arranged.
Further, nuclear power plant as above chimney gaseous effluent sample representation simulation test ventilation unit, wherein, is provided with plenum chamber between the end of described air intake branch road and test chimney.
Beneficial effect of the present invention is as follows: simulation test ventilation unit provided by the present invention is by being furnished with the blower fan adjustment air quantity of frequency converter to meet testing requirements, system obtains outdoor new wind from air inlet, after filter casing filters, send into test chimney by the blower fan being furnished with frequency converter, complete gaseous effluent sample representation simulation test.This apparatus structure is simple, easy to operate, meets the requirement of gas sampling system scale model tests completely.
Accompanying drawing explanation
Fig. 1 is the structural representation (comprising two air intake branch roads) of the specific embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, present embodiments provide a kind of nuclear power plant's chimney gaseous effluent sample representation simulation test ventilation unit comprising two air intake branch roads, enter chimney, can increase branch road by actual conditions for multiple branch circuit, each branch circuit parallel connection is arranged.
The nuclear power plant provided in Fig. 1 chimney gaseous effluent sample representation simulation test ventilation unit, comprise two to be connected air intake branch road with test chimney 10 bottom, every bar air intake branch road is provided with the frequency conversion fan 4 be connected with frequency converter 1, the upstream air intake branch road of frequency conversion fan 4 is provided with filter box-body 3(by low efficient filter, highly effective particle filter is formed), filter box-body 3 connects air inlet 2, the downstream air intake branch road of frequency conversion fan 4 is provided with non-return valve 5, adjusting air valve 6, flow measurement instrument 7, pressure measuring instruments 8, each parts on air intake branch road are interconnected by airduct.Airduct can adopt stainless steel or other material, and size for connection should meet the airduct size of scale model requirement.
Chimney is entered for many air intakes branch road, whether the situation determination simulation test ventilation unit that whether can arrange wind mixed chamber by chimney of electric plant adds plenum chamber 9, and each air intake branch road enters chimney by plenum chamber (making air-flow underspeed to obtain the hollow box body comparatively stablizing static pressure).
Select sampling cross section 11 at the differing heights place of test chimney 10, arrange and test hand hole accordingly, determine its height by the Flow Field Calculation (CFD) of chimney.
Simulation test ventilation unit is by being furnished with the blower fan adjustment air quantity of frequency converter to meet testing requirements.System obtains outdoor new wind from air inlet, after filter casing filters, sends into test chimney by the blower fan being furnished with frequency converter.Air intake branch road is provided with pressure measuring instruments and flow measurement instrument to obtain correlation test data.By requiring standard ISO 2889-2010 and the further research of chimney Flow Field Distribution and demonstration, determine the relevant design parameter testing ventilation unit.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if belong within the scope of the claims in the present invention and equivalent technology thereof to these amendments of the present invention and modification, then the present invention is also intended to comprise these change and modification.
Claims (4)
1. nuclear power plant's chimney gaseous effluent sample representation simulation test ventilation unit, it is characterized in that: comprise at least one and to be connected air intake branch road with test chimney (10) bottom, described air intake branch road is provided with frequency conversion fan (4), the upstream air intake branch road of frequency conversion fan (4) is provided with filter box-body (3), the downstream air intake branch road of frequency conversion fan (4) is provided with non-return valve (5) and adjusting air valve (6), each parts on air intake branch road are interconnected by airduct, test hand hole is provided with at the differing heights of test chimney (10), plenum chamber (9) is provided with between the end of described air intake branch road and test chimney.
2. nuclear power plant as claimed in claim 1 chimney gaseous effluent sample representation simulation test ventilation unit, is characterized in that: described air intake branch road is also provided with pressure measuring instruments (8) and flow measurement instrument (7).
3. nuclear power plant as claimed in claim 1 or 2 chimney gaseous effluent sample representation simulation test ventilation unit, is characterized in that: comprise low efficient filter, highly effective particle filter in described filter box-body (3).
4. nuclear power plant as claimed in claim 1 or 2 chimney gaseous effluent sample representation simulation test ventilation unit, is characterized in that: the air intake branch road comprising two or more, and each bar air intake branch circuit parallel connection is arranged.
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| CN201310251537.0A CN103353606B (en) | 2013-06-24 | 2013-06-24 | Nuclear power plant's chimney gaseous effluent sample representation simulation test ventilation unit |
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| CN201310251537.0A CN103353606B (en) | 2013-06-24 | 2013-06-24 | Nuclear power plant's chimney gaseous effluent sample representation simulation test ventilation unit |
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| CN103353606A CN103353606A (en) | 2013-10-16 |
| CN103353606B true CN103353606B (en) | 2016-02-10 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114486944B (en) * | 2021-12-14 | 2023-11-10 | 中国原子能科学研究院 | Modularized chimney gaseous effluent mixing uniformity research device |
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| CN1895732A (en) * | 2006-06-16 | 2007-01-17 | 天津市海光空调净化技术咨询有限公司 | Filter-efficiency inspection system for efficient and super-efficient air filter |
| CN101520365A (en) * | 2009-03-06 | 2009-09-02 | 山东科技大学 | Simulation experimental system for controlling mine tunnel dust environment |
| CN201885517U (en) * | 2010-11-26 | 2011-06-29 | 美药星（南京）制药有限公司 | Boiling dryer for medicine preparation |
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| CN102519108A (en) * | 2011-12-22 | 2012-06-27 | 中国核电工程有限公司 | Improved structure for ventilating system of master control room of nuclear power station |
| CN102644994A (en) * | 2012-05-08 | 2012-08-22 | 同济大学 | Large-scale underground space frequency conversion combined ventilation system |
| CN203365191U (en) * | 2013-06-24 | 2013-12-25 | 中国核电工程有限公司 | Simulation-test ventilating device for representative sampling of chimney gaseous effluent for nuclear power plant |
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2013
- 2013-06-24 CN CN201310251537.0A patent/CN103353606B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2788072Y (en) * | 2005-04-22 | 2006-06-14 | 孟祥勇 | Novel soundproof ventilating device |
| CN1895732A (en) * | 2006-06-16 | 2007-01-17 | 天津市海光空调净化技术咨询有限公司 | Filter-efficiency inspection system for efficient and super-efficient air filter |
| CN101520365A (en) * | 2009-03-06 | 2009-09-02 | 山东科技大学 | Simulation experimental system for controlling mine tunnel dust environment |
| CN201885517U (en) * | 2010-11-26 | 2011-06-29 | 美药星（南京）制药有限公司 | Boiling dryer for medicine preparation |
| CN202229353U (en) * | 2011-09-30 | 2012-05-23 | 武汉科贝科技有限公司 | Segmentation control variable air volume ventilating system of laboratory |
| CN102519108A (en) * | 2011-12-22 | 2012-06-27 | 中国核电工程有限公司 | Improved structure for ventilating system of master control room of nuclear power station |
| CN102644994A (en) * | 2012-05-08 | 2012-08-22 | 同济大学 | Large-scale underground space frequency conversion combined ventilation system |
| CN203365191U (en) * | 2013-06-24 | 2013-12-25 | 中国核电工程有限公司 | Simulation-test ventilating device for representative sampling of chimney gaseous effluent for nuclear power plant |
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| CN103353606A (en) | 2013-10-16 |
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