CN203365191U - Simulation-test ventilating device for representative sampling of chimney gaseous effluent for nuclear power plant - Google Patents

Simulation-test ventilating device for representative sampling of chimney gaseous effluent for nuclear power plant Download PDF

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Publication number
CN203365191U
CN203365191U CN 201320362237 CN201320362237U CN203365191U CN 203365191 U CN203365191 U CN 203365191U CN 201320362237 CN201320362237 CN 201320362237 CN 201320362237 U CN201320362237 U CN 201320362237U CN 203365191 U CN203365191 U CN 203365191U
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CN
China
Prior art keywords
chimney
power plant
air intake
nuclear power
intake branch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320362237
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Chinese (zh)
Inventor
郭静涛
杜文学
刘鹏飞
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China Nuclear Power Engineering Co Ltd
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China Nuclear Power Engineering Co Ltd
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Publication date
Application filed by China Nuclear Power Engineering Co Ltd filed Critical China Nuclear Power Engineering Co Ltd
Priority to CN 201320362237 priority Critical patent/CN203365191U/en
Application granted granted Critical
Publication of CN203365191U publication Critical patent/CN203365191U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model belongs to a heating, ventilating and air conditioning technology in a nuclear power plant, and particularly relates to a simulation-test ventilating device for representative sampling of chimney gaseous effluent for the nuclear power plant. The simulation-test ventilating device structurally comprises one or more air inlet branches connected with the lower part of a test chimney, wherein a frequency conversion fan is arranged on each air inlet branch; a filter box body is arranged in each air inlet branch at the upstream part of each frequency conversion fan, and a check valve and an adjusting air valve are arranged in each air inlet branch at the downstream part of each frequency conversion fan; all components on each air inlet branch are connected with each other through an air pipe. According to the utility model, the structure is simple, the operation is convenient, and the requirements of a gas sampling system scale model test are fully met.

Description

Chimney gaseous effluent sample representation simulation test ventilation unit for nuclear power plant
Technical field
The utility model belongs to nuclear power plant's heating ventilation and air-conditioning technical, is specifically related to chimney gaseous effluent sample representation simulation test ventilation unit for a kind of nuclear power plant.
Background technology
In order to assess the impact of nuclear facilities on surrounding environment, laws and regulations requirement, must carry out the radioactivity monitoring to the nuclear facilities effluent.The radioactive effluent of nuclear facilities is divided into gas and carries and two kinds of liquid effluents, wherein Airborne Effluent be mainly by pipeline or smoke stack emission in environment.Nuclear facilities is provided with the gas sample system usually, to the Airborne Effluent measurement that runs continuous samples.Distribution due to radiomaterial in pipeline or chimney flow field may be inhomogeneous, and whether the sample of therefore obtaining is representative, will directly affect the accuracy of effluent measurement.
In order to obtain representative sample, new edition standard ISO 2889-2010 has mainly proposed quantitative technical requirement from sample position and two aspects of sampling system design.The sampling system of nuclear facilities, need, 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 actual air draft chimney size is larger, site test is comparatively complicated, and can be subject to other condition restriction of nuclear power plant, 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; Flow Field Calculation (CFD) by chimney provides and can reach well-mixed approximate region simultaneously, thereby simplifies site test.
The utility model content
The purpose of this utility model is to provide chimney gaseous effluent sample representation simulation test ventilation unit for a kind of nuclear power plant, to meet the requirement of gas sample system scale model tests.
The technical solution of the utility model is as follows: chimney gaseous effluent sample representation simulation test ventilation unit for a kind of nuclear power plant, comprise at least one with the test chimney bottom air intake branch road that is connected, 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 the air intake branch road interconnect by airduct.
Further, chimney gaseous effluent sample representation simulation test ventilation unit for nuclear power plant as above, wherein, also be provided with pressure measuring instruments and flow measurement instrument on described air intake branch road.
Further, chimney gaseous effluent sample representation simulation test ventilation unit for nuclear power plant as above, wherein, comprise low efficient filter, highly effective particle filter in described filter box-body.
Further, chimney gaseous effluent sample representation simulation test ventilation unit for nuclear power plant as above, wherein, be provided with the test hand hole at the differing heights of testing chimney.
Further, chimney gaseous effluent sample representation simulation test ventilation unit for nuclear power plant as above, wherein, comprise two or more air intake branch road, and each air intake branch circuit parallel connection arranges.
Further, chimney gaseous effluent sample representation simulation test ventilation unit for nuclear power plant as above, wherein, be provided with plenum chamber between the end of described air intake branch road and test chimney.
The beneficial effects of the utility model are as follows: simulation test ventilation unit provided by the utility model is adjusted air quantity to meet testing requirements by the blower fan of being furnished with frequency converter, system is obtained outdoor new wind from air inlet, after the filter casing filters, send into test by the blower fan of being furnished with frequency converter and use chimney, complete gaseous effluent sample representation simulation test.This apparatus structure is simple, easy to operate, meets the requirement of gas sample system scale model tests fully.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model specific embodiment (comprising two air intake branch roads).
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1, the present embodiment provides chimney gaseous effluent sample representation simulation test ventilation unit for a kind of nuclear power plant that comprises two air intake branch roads, for multiple branch circuit, enters chimney, can increase branch road by actual conditions, and each branch circuit parallel connection arranges.
Chimney gaseous effluent sample representation simulation test ventilation unit for the nuclear power plant provided in Fig. 1, comprise two air intake branch roads that are connected with test chimney 10 bottoms, every the 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 forms), 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 the air intake branch road interconnect by airduct.Airduct can adopt stainless steel or other material, and size for connection should meet the airduct size of scale model requirement.
Enter chimney for many air intakes branch road, the situation that can whether wind mixed chamber be set by chimney of electric plant determines whether the simulation test ventilation unit 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 of stablizing static pressure).
Select sampling cross section 11 at the differing heights place of test chimney 10, corresponding test hand hole is set, by the Flow Field Calculation (CFD) of chimney, determine its height.
The simulation test ventilation unit is adjusted air quantity to meet testing requirements by the blower fan of being furnished with frequency converter.System is obtained outdoor new wind from air inlet, after the filter casing filters, by the blower fan of being furnished with frequency converter, sends into the test chimney.The air intake branch road is provided with pressure measuring instruments and flow measurement instrument to obtain the correlation test data.By further research and the demonstration to standard ISO 2889-2010 requirement and chimney Flow Field Distribution, the relevant design parameter of confirmed test ventilation unit.
Obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model the utility model.Like this, if of the present utility model these are revised and within modification belongs to the scope of the utility model claim and equivalent technology thereof, the utility model also is intended to comprise these changes and modification interior.

Claims (6)

1. chimney gaseous effluent sample representation simulation test ventilation unit for a nuclear power plant, it is characterized in that: comprise at least one with test chimney (10) the bottom air intake branch road that is connected, 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), and each parts on the air intake branch road interconnect by airduct.
2. chimney gaseous effluent sample representation simulation test ventilation unit for nuclear power plant as claimed in claim 1, is characterized in that: also be provided with pressure measuring instruments (8) and flow measurement instrument (7) on described air intake branch road.
3. chimney gaseous effluent sample representation simulation test ventilation unit for nuclear power plant as claimed in claim 1 or 2, it is characterized in that: described filter box-body comprises low efficient filter, highly effective particle filter in (3).
4. chimney gaseous effluent sample representation simulation test ventilation unit for nuclear power plant as claimed in claim 1 or 2, is characterized in that: at the differing heights of testing chimney (10), be provided with the test hand hole.
5. chimney gaseous effluent sample representation simulation test ventilation unit for nuclear power plant as claimed in claim 1 or 2, is characterized in that: comprise two or more air intake branch road, each air intake branch circuit parallel connection setting.
6. chimney gaseous effluent sample representation simulation test ventilation unit for nuclear power plant as claimed in claim 5, is characterized in that: between the end of described air intake branch road and test chimney, be provided with plenum chamber (9).
CN 201320362237 2013-06-24 2013-06-24 Simulation-test ventilating device for representative sampling of chimney gaseous effluent for nuclear power plant Expired - Fee Related CN203365191U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320362237 CN203365191U (en) 2013-06-24 2013-06-24 Simulation-test ventilating device for representative sampling of chimney gaseous effluent for nuclear power plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320362237 CN203365191U (en) 2013-06-24 2013-06-24 Simulation-test ventilating device for representative sampling of chimney gaseous effluent for nuclear power plant

Publications (1)

Publication Number Publication Date
CN203365191U true CN203365191U (en) 2013-12-25

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CN 201320362237 Expired - Fee Related CN203365191U (en) 2013-06-24 2013-06-24 Simulation-test ventilating device for representative sampling of chimney gaseous effluent for nuclear power plant

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103353606A (en) * 2013-06-24 2013-10-16 中国核电工程有限公司 Nuclear power plant used venting apparatus for chimney gaseous effluent sampling representative simulation test

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103353606A (en) * 2013-06-24 2013-10-16 中国核电工程有限公司 Nuclear power plant used venting apparatus for chimney gaseous effluent sampling representative simulation test
CN103353606B (en) * 2013-06-24 2016-02-10 中国核电工程有限公司 Nuclear power plant's chimney gaseous effluent sample representation simulation test ventilation unit

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131225

Termination date: 20190624

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