CN203572691U - Super-large-flow radioactive aerosol sampling device - Google Patents
Super-large-flow radioactive aerosol sampling device Download PDFInfo
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- CN203572691U CN203572691U CN201320641093.7U CN201320641093U CN203572691U CN 203572691 U CN203572691 U CN 203572691U CN 201320641093 U CN201320641093 U CN 201320641093U CN 203572691 U CN203572691 U CN 203572691U
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- electromagnetic valve
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Abstract
The utility model provides a super-large-flow radioactive aerosol sampling device and belongs to the field of radiation protection and environment protection. The sampling device adopts a box body structure with a control panel, comprises an upper sampling loop and a lower sampling loop and consists of a cyclone type air inlet barrel, an aerosol sampling head, a vacuum pressure gauge, a flow monitor, a vacuum pump, an automatic control unit, a connector and a pipeline. By the adoption of the design of the cyclone type air inlet barrel and the two sampling loops, the sampling device disclosed by the utility model can effectively improve blocking of a filter material and is particularly suitable for super-large-flow collection of radioactive aerosol under a complicated meteorological condition or severe pollution by atmospheric particles.
Description
Technical field
The utility model provides a kind of super-flow radioaerosol sampling apparatus, belongs to radiation protection and environmental protection field.
Background technology
Radioaerosol monitoring is the important content of nuclear emergency monitoring and conventional environment nuclear radiation monitoring, and the collection of radioaerosol is the prerequisite that monitoring is carried out.For guaranteeing promptness, accuracy and the reliability of Monitoring Data, the sampling quantity of radioaerosol or sampling rate need to meet certain requirements conventionally, as China < < radiation environmental monitoring technical manual > > (HJ/T61-2001) requires gasoloid accumulated samples volume in nuclear power plant's radiation environmental monitoring, should be not less than 10000m
3, Comprehensive Nuclear Test-Ban Treaty Organization clearly stipulates that the aerosol sampler flow that its radio nuclide monitoring system station is equipped with is not less than 500m
3/ h.
The needs of adaptive radiation environmental monitoring work, super-flow radioaerosol sampling thief is widely used gradually.Existing super-flow radioaerosol sampling thief generally adopts single loop pattern, generally draft tube, sampling head, flowmeter, vacuum pump, electric-control system, gas outlet and pipeline, consists of.It is the current super-flow radioaerosol sampling thief outstanding problem running in service that filter material stops up, and especially, the in the situation that of IFR conditions or Atmospheric particulates severe contamination, filter material stops up the even damage of equipment of breakage that easily causes filter material frequently.
Summary of the invention
The deficiency existing in order to overcome above-mentioned prior art, the utility model provides a kind of super-flow radioaerosol sampling apparatus, the super-flow collection of radioaerosol in the time of can effectively realizing IFR conditions or Atmospheric particulates severe contamination.
The technical scheme that the utility model adopts is:
A kind of super-flow radioaerosol sampling apparatus, it is characterized in that, described sampling apparatus is the body structure with control panel, comprise up-sampling loop and down-sampling loop, by cyclone type air induction mast, sampling of aerosol head I, sampling of aerosol head II, electromagnetic valve I, electromagnetic valve II, vacuum pressure Table I, vacuum pressure Table II, flowmeter I, flowmeter II, flow monitoring instrument, vacuum pump I, vacuum pump II and automatic control unit, formed.
Described sampling apparatus annexation is: the air intake opening being arranged on outside sampling apparatus casing is tangentially connected with cyclone type air induction mast, and cyclone type air induction mast top is connected with lower exhaust duct with upper exhaust duct respectively with bottom; Upper exhaust duct is connected with one end of sampling of aerosol head I, the other end of sampling of aerosol head I is connected with electromagnetic valve I, the other end of electromagnetic valve I is connected with a joint of three-way connection I, other two joints of three-way connection I are connected with flowmeter I with vacuum pressure Table I respectively, flowmeter I is connected with vacuum pump I, vacuum pump I is connected with gas outlet I, forms the up-sampling loop of sampling apparatus; Lower exhaust duct is connected with one end of sampling of aerosol head II, the other end of sampling of aerosol head II is connected with electromagnetic valve II, the other end of electromagnetic valve II is connected with a joint of three-way connection II, other two joints of three-way connection II are connected with flowmeter II with vacuum pressure Table II respectively, flowmeter II is connected with vacuum pump II, vacuum pump II is connected with gas outlet II, forms the down-sampling loop of sampling apparatus; Flowmeter I, flowmeter II are connected with flow monitoring instrument respectively; Automatic control unit is connected with electromagnetic valve I, electromagnetic valve II, vacuum pressure Table I, vacuum pressure Table II, flow monitoring instrument, vacuum pump I and vacuum pump II respectively by control signal wire.
Described cyclone type air induction mast is a preseparator, the larger particles in the radioaerosol of suction can be removed, and effectively alleviates the obstruction of filter material.
Described cyclone type air induction mast bottom is provided with anti-back mixing heap, and the bulky grain thing that can effectively suppress to be separated enters separated space again.
Described automatic control unit carries out control and management by control signal wire to the operating condition of pressure vacuum gauge, solenoid valve, flow monitoring instrument, vacuum pump, realizes the operation of sampling circuit and stops.Two sampling of aerosol capitiforms become upper and lower two sampling circuits, and when sampling apparatus starts, up-sampling loop is standby, and putting into operation in down-sampling loop, is realized pre-separation and the collection of radioaerosol sample by down-sampling loop; When sampling circuit occurs to stop up instantly, automatic control unit is controlled up-sampling loop and is put into operation, and down-sampling loop is closed simultaneously, is realized the collection of radioaerosol sample by up-sampling loop, and the pre-separation of radioaerosol sample is realized in down-sampling loop.
Described pressure vacuum gauge can feed back to automatic control unit by sampling circuit pressure monitoring information, when sampling circuit negative pressure reaches setting value, and tensimeter output signal, automatic control unit cuts off the vacuum-pump power supply on corresponding circuit, to protect instrument and equipment.
Described flow monitoring instrument is for flow monitoring and control, the instantaneous delivery, integrated flux, sampling time and the total integrated flux that can real-time online show two loop flowmeters, when total integrated flux reaches setting value, flow monitoring instrument output signal, cut off vacuum-pump power supply, sampling of aerosol system quits work.
Radioaerosol sampling apparatus of the present utility model, by the design of cyclone type air induction mast and two sampling circuits, in the situation that guaranteeing radioaerosol to carry out super-flow collection, effectively alleviate filter material and stop up, the collection of radioaerosol while being specially adapted to IFR conditions or Atmospheric particulates severe contamination.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1-casing; 2-control panel; 3-air intake opening; 4-cyclone type air induction mast; The anti-back mixing heap of 5-; Exhaust duct under 6-; 7-sampling of aerosol head II; 8-electromagnetic valve II; 9-three-way connection II; 10-flowmeter II; 11-vacuum pump II; 12-gas outlet II; The upper exhaust duct of 13-; 14-sampling of aerosol head I; 15-electromagnetic valve I; 16-three-way connection I; 17-flowmeter I; 18-vacuum pump I; 19-gas outlet I; 20-vacuum pressure Table II; 21-vacuum pressure Table I; 22-flow monitoring instrument; 23-automatic control unit; 24-control signal wire.
Embodiment
The non-limiting specific embodiment of the utility model that discloses of accompanying drawing, is further described below in conjunction with accompanying drawing.
A kind of super-flow radioaerosol sampling apparatus, it is characterized in that, described sampling apparatus is with the casing of control panel (2) (1) structure, comprise up-sampling loop and down-sampling loop, by cyclone type air induction mast (4), sampling of aerosol head I(14), sampling of aerosol head II(7), electromagnetic valve I (15), electromagnetic valve II (8), pressure vacuum gauge I(21), pressure vacuum gauge II(20), flowmeter I(17), flowmeter II(10), flow monitoring instrument (22), vacuum pump I(18), vacuum pump II(11) and automatic control unit (23) form.
Described sampling apparatus annexation is: the air intake opening (3) being arranged on outside sampling apparatus casing is tangentially connected with cyclone type air induction mast (4), and cyclone type air induction mast (4) top is connected with lower exhaust duct (6) with upper exhaust duct (13) respectively with bottom; Upper exhaust duct (13) and sampling of aerosol head I(14) one end be connected, sampling of aerosol head I(14) the other end is connected with electromagnetic valve I (15), the other end of electromagnetic valve I (15) and three-way connection I(16) a joint be connected, three-way connection I(16) other two joints respectively with pressure vacuum gauge I(21) with flowmeter I(17) be connected, flowmeter I(17) with vacuum pump I(18) be connected, vacuum pump I(18) with gas outlet I(19) be connected, form the up-sampling loop of sampling apparatus; Lower exhaust duct (6) and sampling of aerosol head II(7) one end be connected, sampling of aerosol head II(7) the other end is connected with electromagnetic valve II (8), the other end of electromagnetic valve II (8) and three-way connection II(9) a joint be connected, three-way connection II(9) other two joints respectively with pressure vacuum gauge II(20) with flowmeter II(10) be connected, flowmeter II(10) with vacuum pump II(11) be connected, vacuum pump II(11) with gas outlet II(12) be connected, form the down-sampling loop of sampling apparatus; Flowmeter I(17), flowmeter II(10) be connected with flow monitoring instrument (22) respectively; Automatic control unit (23) by control signal wire (24) respectively with electromagnetic valve I (15), electromagnetic valve II (8), pressure vacuum gauge I(21), pressure vacuum gauge II(20), flow monitoring instrument (22), vacuum pump I(18) with vacuum pump II(11) be connected.
When sampling apparatus starts, electromagnetic valve I (15) and vacuum pump I(18) to close, up-sampling loop is in stand-by state, and put into operation in down-sampling loop.The radioaerosol that enters cyclone type air induction mast (4) is separated under centrifugal convolution effect, bulky grain thing is wherein deposited on the surrounding of cyclone type air induction mast (4) bottom cone, gasoloid after separated enters the lower exhaust duct (6) of cyclone type air induction mast (4), by sampling of aerosol head II(7) absorption.Cyclone type air induction mast (4) bottom is provided with anti-back mixing heap (5), and the bulky grain thing that can effectively suppress to be separated enters separated space again.Pressure vacuum gauge II(20) show down-sampling circuit pressure, and pressure monitoring feedback information is offered to automatic control unit (23).Flowmeter II(10) flow in down-sampling loop is monitored, by flowmeter II(10) gas successively through vacuum pump II(11) and gas outlet II(12) after discharge.Flow monitoring instrument (22) can show instantaneous delivery, integrated flux and the sampling time in down-sampling loop in real time, and integrated flux information is fed back to automatic control unit (23).When sampling circuit integrated flux reaches setting value instantly, flow monitoring instrument (23) output signal, aerosol sampling apparatus quits work.
When IFR conditions or Atmospheric particulates severe contamination; if accumulative total sampling volume not yet reaches setting value; but radioaerosol sampling head II(7) because causing filter membrane, stops up long-play; while causing down-sampling loop negative pressure to reach setting value; vacuum pressure II(20) table output signal; automatic control unit (23) cut-out vacuum pump II(11) power supply, electromagnetic valve II (8) is closed, to protect the relevant device in down-sampling loop.Subsequently, automatic control unit (23) is controlled electromagnetic valve I (15) and is opened and vacuum pump I(18) start, put into operation in up-sampling loop.Now, pre-separation is carried out to radioaerosol sample in down-sampling loop, gasoloid after separated enters the upper exhaust duct (13) of cyclone type air induction mast (4), by sampling of aerosol head I(14) absorption, realizes the collection to radioaerosol sample by up-sampling loop.Pressure vacuum gauge I(21) show up-sampling circuit pressure, flowmeter I(17) flow in up-sampling loop is monitored, flow monitoring instrument (22) shows instantaneous delivery, integrated flux and the sampling time in up-sampling loop in real time, and total integrated flow information is carried out to record, feed back to automatic control unit (23) simultaneously.When total integrated flux reaches setting value, flow monitoring instrument (22) output signal, closes vacuum pump I(18) and electromagnetic valve I (15), complete the acquisition tasks of primary emission aerosol sample.
Claims (3)
1. a super-flow radioaerosol sampling apparatus, it is characterized in that, described sampling apparatus is the body structure with control panel, comprise up-sampling loop and down-sampling loop, by cyclone type air induction mast, sampling of aerosol head I, sampling of aerosol head II, electromagnetic valve I, electromagnetic valve II, vacuum pressure Table I, vacuum pressure Table II, flowmeter I, flowmeter II, flow monitoring instrument, vacuum pump I, vacuum pump II and automatic control unit, formed; Its annexation is: the air intake opening being arranged on outside sampling apparatus casing is tangentially connected with cyclone type air induction mast, and cyclone type air induction mast top is connected with lower exhaust duct with upper exhaust duct respectively with bottom; Upper exhaust duct is connected with one end of sampling of aerosol head I, the other end of sampling of aerosol head I is connected with electromagnetic valve I, the other end of electromagnetic valve I is connected with a joint of three-way connection I, other two joints of three-way connection I are connected with flowmeter I with vacuum pressure Table I respectively, flowmeter I is connected with vacuum pump I, vacuum pump I is connected with gas outlet I, forms the up-sampling loop of sampling apparatus; Lower exhaust duct is connected with one end of sampling of aerosol head II, the other end of sampling of aerosol head II is connected with electromagnetic valve II, the other end of electromagnetic valve II is connected with a joint of three-way connection II, other two joints of three-way connection II are connected with flowmeter II with vacuum pressure Table II respectively, flowmeter II is connected with vacuum pump II, vacuum pump II is connected with gas outlet II, forms the down-sampling loop of sampling apparatus; Flowmeter I, flowmeter II are connected with flow monitoring instrument respectively.
2. a kind of super-flow radioaerosol sampling apparatus as claimed in claim 1, it is characterized in that, described automatic control unit is connected with electromagnetic valve I, electromagnetic valve II, vacuum pressure Table I, vacuum pressure Table II, flow monitoring instrument, vacuum pump I and vacuum pump II respectively by control signal wire.
3. a kind of super-flow radioaerosol sampling apparatus as claimed in claim 1, is characterized in that, described cyclone type air induction mast bottom is provided with anti-back mixing heap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320641093.7U CN203572691U (en) | 2013-10-17 | 2013-10-17 | Super-large-flow radioactive aerosol sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320641093.7U CN203572691U (en) | 2013-10-17 | 2013-10-17 | Super-large-flow radioactive aerosol sampling device |
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| Publication Number | Publication Date |
|---|---|
| CN203572691U true CN203572691U (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320641093.7U Expired - Fee Related CN203572691U (en) | 2013-10-17 | 2013-10-17 | Super-large-flow radioactive aerosol sampling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592158A (en) * | 2013-10-17 | 2014-02-19 | 李锦� | Extra-large-flow radioactive aerosol sampling device |
| CN105548417A (en) * | 2015-12-22 | 2016-05-04 | 潍坊歌尔电子有限公司 | An adsorption sampling device and an adsorption sampling method |
-
2013
- 2013-10-17 CN CN201320641093.7U patent/CN203572691U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592158A (en) * | 2013-10-17 | 2014-02-19 | 李锦� | Extra-large-flow radioactive aerosol sampling device |
| CN105548417A (en) * | 2015-12-22 | 2016-05-04 | 潍坊歌尔电子有限公司 | An adsorption sampling device and an adsorption sampling method |
| CN105548417B (en) * | 2015-12-22 | 2018-10-19 | 潍坊歌尔电子有限公司 | A kind of adsorbing and sampling device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NUCLEAR AND RADIATION SAFETY CENTER Free format text: FORMER OWNER: LI JIN Effective date: 20140618 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140618 Address after: 100082 Beijing city Haidian District Red Village No. 54 Patentee after: NUCLEAR AND RADIATION SAFETY CENTER Address before: 100082 Beijing city Haidian District Red Village No. 54 Patentee before: Li Jin |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20161017 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |