CN106596206A - Sample collection device and sample collection method - Google Patents
Sample collection device and sample collection method Download PDFInfo
- Publication number
- CN106596206A CN106596206A CN201610146372.4A CN201610146372A CN106596206A CN 106596206 A CN106596206 A CN 106596206A CN 201610146372 A CN201610146372 A CN 201610146372A CN 106596206 A CN106596206 A CN 106596206A
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- CN
- China
- Prior art keywords
- piping system
- test portion
- sample gas
- collection container
- pipe arrangement
- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/02—Collecting means for receiving or storing samples to be investigated and possibly directly transporting the samples to the measuring arrangement; particularly for investigating radioactive fluids
Abstract
The present invention provides a sample collection device and a sample collection method in which sample gas can be safely collected in a sample collection container even when the radioactivity concentration of the sample gas is high. The sample collecting device (30) of the present invention comprises a piping system (10) for obtaining a sample gas for collecting from a piping for measuring a radioactive concentration; a coupler (57) provided in a piping system for loading and unloading a sample collection container (56); a plurality of on-off valves (43, 44, 54, 58, 66, 67, 70, 78) provided in the piping system; a vacuum pump (69) for evacuating the piping system; a control unit (34) for controlling the pressure reduction in the piping system by the vacuum pump and the atmospheric introduction through the on-off valves in the state where the sample collecting container is mounted on the mounting portion and diluting the sample gas concentration in the sample collection container.
Description
Technical field
The present invention relates to be used to that the sample gas of analysis object be collected the examination of test portion collection container in nuclear facilities etc.
Material harvester and test portion acquisition method.
Background technology
For example, the one kind in nuclear facilities is in nuclear power generation facility, in order to determine from the radioactive substance radiation of waste gas
Radioactive concentration, is equipped with radgas monitoring system.Radgas monitoring system is carried out to the waste gas of facility aiutage
Sampling, and be conducted into determining container, using radioactive material of the radioactivity determination measurement device of low high scope from waste gas
The radioactive concentration of matter release.Now, the radioactive ray level of measure object is set to regard to radioactivity determination device, from it is usual when
Wider measurement range high scope of the low scope of background level when hypothetical accident etc. is abnormal is used as object.
The test portion harvester for gathering sample gas (determined gas) is installed in radgas monitoring system.
In the case that test portion harvester is contemplated to like that radioactive concentration rising when accident etc. is abnormal, sample gas is collected and is set
In being placed in the test portion collection container of the test portion harvester.Operator unloads the test portion collection container from test portion harvester, turns
To analysis operation, determine nuclear species class for the radioactive substance included in sample gas etc. (referring for example to patent document 1).
The ampuliform sampler device as test portion harvester is recorded in patent document 1.In patent document 1, record
After making vavuum pump action and vacuumizing as in the bottle of test portion collection container, sample gas is collected in bottle (with reference to specially
[0004], [0028] of sharp document 1).
Prior art literature
Patent document
Patent document 1：Japanese Patent Laid-Open 6-174605 publication
The content of the invention
Invent technical problem to be solved
If however, the radioactive concentration of waste gas as assuming is uprised during accident, collecting in test portion collection container
The radioactive concentration of sample gas is uprised.Then, from the viewpoint of being radiated from operator, by test portion collection container from test portion
Harvester unloads more difficult.
The present invention is completed in view of the above problems, its object is to provide a kind of test portion harvester and test portion collection side
Method, even if under the higher situation of the radioactive concentration of sample gas, sample gas also can safely be collected test portion collection
In container.
Solve the technical scheme of technical problem
The present invention test portion harvester be characterised by, including：Piping system, the piping system is used for from measurement radiation
Property concentration the pipe arrangement that flows through of sample gas obtain the sample gas of collection；Installation portion, the installation portion is arranged at described matching somebody with somebody
Guard system and for loading and unloading test portion collection container；It is arranged at the multiple switch valve of the piping system；The piping system is entered
The vavuum pump that row is vacuumized；And control unit, the test portion collection container is being installed on the installation portion by the control unit
The decompression and the air introduction via the switch valve in the piping system that carried out by the vavuum pump is controlled under state, it is dilute
Release the sample gas concentration in the test portion collection container.
Additionally, other present invention are a kind of test portion acquisition method, the test portion acquisition method is in test portion harvester
Test portion acquisition method, the test portion harvester includes：Piping system, the piping system is used for the sample from measurement radioactive concentration
The pipe arrangement that product gas flows through obtains the sample gas of collection；Installation portion, the installation portion is arranged at the piping system and is used for
Handling test portion collection container；It is arranged at the multiple switch valve of the piping system；And the piping system is vacuumized
Vavuum pump, it is characterised in that the test portion acquisition method is comprised the steps of：1st step, it is described to being installed in the 1st step
The test portion collection container of installation portion imports the sample gas obtained from the pipe arrangement；Second step, in the second step, cut-out
The stream with external connection of the piping system, also, it is open between the test portion collection container and the piping system
In the state of, the piping system being connected with the test portion collection container using the vavuum pump pair is reduced pressure；3rd step
Suddenly, in the third step, will cut off between the test portion collection container and the piping system, and using the vavuum pump to quilt
The piping system of the side of cut-out is vacuumized；And the 4th step, in the 4th step, by the test portion collection container with
It is open between the piping system, and by air introduction to the piping system, to the sample gas in the test portion collection container
Body is diluted.
Invention effect
According to the present invention, even if under the higher situation of the radioactive concentration of sample gas, also can be by sample gas safety
Collect in test portion collection container.
Description of the drawings
Fig. 1 is the system diagram of the radgas monitoring system involved by present embodiment.
Fig. 2 is the system diagram for representing the test portion harvester involved by present embodiment.
Fig. 3 be for illustrating the test portion harvester of present embodiment in preparation process in advance explanatory diagram.
Fig. 4 be for illustrating the test portion harvester of present embodiment in sample gas is imported in test portion collection container
The explanatory diagram of the 1st step.
Fig. 5 be for illustrating the test portion harvester of present embodiment in the second step as gas decompression action explanation
Figure.
Fig. 6 be for illustrating the test portion harvester of present embodiment in the third step as vacuum action explanatory diagram.
Fig. 7 be for illustrating the test portion harvester of present embodiment in the 4th step as air importing action (prime)
Explanatory diagram.
Fig. 8 be for illustrating the test portion harvester of present embodiment in the 4th step as air importing action (rear class)
Explanatory diagram.
Fig. 9 be for illustrating the test portion harvester of present embodiment in the 5th step that action is unloaded as test portion collection container
Rapid explanatory diagram.
Specific embodiment
Below, one embodiment of the present invention (hereinafter referred to as " embodiment ") is described in detail.Present embodiment be by
Be connected with radgas monitoring system one of test portion harvester, the radgas monitoring system is from nuclear power generation facility
Facility aiutage (or aiutage pipeline) is sampled to waste gas, monitors the radioactive material from the waste gas (sample gas) of sampling
The radioactive concentration of matter release.
Fig. 1 is the system diagram of radgas monitoring system.Radgas monitoring system has can be with low scope and height
Scope determines the chamber 2 of the radioactive concentration of the sample gas introduced from aiutage 20.Then, the sample gas of chamber 2 is introduced
It is configured to gather by the test portion harvester 30 being connected with the radgas monitoring system.
Radgas monitoring system includes the radioactivity determination device 1 of the radioactive concentration of determination sample gas.Radiation
Property determine device 1 and include the chamber 2 of the sampled waste gas of guiding, right as determining using the low scope as relatively low scope
The low scope of elephant is constituted with detector 3 and using of a relatively high scope as the high scope of measure object detector 4.
As shown in figure 1, radioactivity determination device 1 via with the adopting of being connected of aiutage 20 that waste gas is discharged in nuclear power generation facility
Sample pipe arrangement 21 guides waste gas to chamber 2, and the waste gas is returned in aiutage 20 via sampling pipe arrangement 22.In aiutage 20
It is inserted into obtaining the sample nozzle 20a of mouth as the gas of the upstream side of sampling pipe arrangement 21.Sampling pipe arrangement 21 is provided with use
In the dust collecting part 23 being made up of dust collecting filter paper and active carbon filter core etc. of the particulate matter for going to be included in removing exhaust gas etc..By aiutage
A part for 20 waste gas is obtained from sample nozzle 20a, is supplied to radioactivity to survey after removing particulate matter and iodine by dust collecting part 23
Determine the chamber 2 of device 1.In Fig. 1, the flow direction of the sample gas of the sampling pipe arrangement 21 by upstream side is shown with arrow A.
Sampling conduit 22 return to row of the sample gas after the chamber 2 of device 1 by downstream is determined by radiativity
Inflator 20.In Fig. 1, the flow direction of the sample gas of the sampling pipe arrangement 22 by downstream is shown with arrow B.In addition, adopting
Sample pipe arrangement 22 is provided with flow sender unit 24, pump 27 of flow of sample gas in measurement sampling pipe arrangement 22 etc..Using pump 27,
Control the flow direction of the sample gas from sample nozzle 20a acquisitions so as to return via the chamber 2 of radioactivity determination device 1
To aiutage 20.
From low scope with detector 3 and the radioactive ray monitoring signals of the output of high scope detector 4 respectively via corresponding
The output of preamplifier 28,29 is to control device 25.Control device 25 includes the storage such as central processing unit (CPU), ROM, RAM
Device and constitute, to by preamplifier 28,29 amplify after faint electric signal be that radiation detection signal is counted, will
It is converted into the monitored parameters such as radioactive concentration and is shown and recorded.It is previously stored with radioactive ray in control device 25
The change data that the counting of detection signal is obtained with radioactive concentration (Becquerel) contrast, based on from low scope detector 3
And the counting of radiation detection signal that high scope detector 4 sends, radioactive concentration can be calculated.
In addition, the structure of the radgas monitoring system shown in Fig. 1 is only one, or other structures.In Fig. 1
In shown embodiment, radgas monitoring system is connected with aiutage 20, but it is also possible to connect as aiutage 20
The aiutage pipeline connection of the final pipeline for connecing.The structure of radgas monitoring system when being connected with aiutage pipeline can be with
It is different from Fig. 1.
Then, the structure of test portion harvester 30 is illustrated.As shown in figure 1, test portion harvester 30 and radioactivity
Gas monitoring systems connect, and specifically, are connected with the Bifurcation System 31 of the sampling pipe arrangement 22 in downstream.Test portion harvester 30
Be configured to can from Bifurcation System 31 gather sample gas, be specially constructed for can diluting high-concentration level sample gas.Using Fig. 2
The structure of test portion harvester 30 is illustrated.Fig. 2 is the system diagram of test portion harvester 30.
As shown in Fig. 2 test portion harvester 30 is included for obtaining the piping system 10 of the sample gas of collection, multiple
Switch valve 43,44,54,58,66,67,70,78, regulating valve 46,68, vavuum pump 69, comprising central processing unit (CPU), ROM,
The storage devices such as RAM and constitute and control the control unit 34 of the test portion harvester 30.
The Bifurcation System 31 of the sampling pipe arrangement 22 that piping system 10 flows through with sample gas is connected.Bifurcation System 31 is from sampling
The upstream side of pipe arrangement 22 to downstream arranges at spaced intervals multiple fork pipe arrangements 35,36,37, it is ensured that from sampling pipe arrangement 22 to each
The stream of the fork fork of pipe arrangement 35,36,37.
The ringent company being connected with the side of test portion harvester 30 is formed with the leading section of each fork pipe arrangement 35,36,37
Socket part 35a, 36a, 37a.Switch valve 38,39 is installed in the half-way of fork pipe arrangement 35 and fork pipe arrangement 36.Match somebody with somebody in fork
The midway of the sampling pipe arrangement 22 between pipe 35 and fork pipe arrangement 36 is also equipped with switch valve 40.Switch valve 38,39,40 can be certainly
Dynamic valve, or hand-operated valve.Hereinafter, if switch valve 38,39,40 is automatic valve, and control device 25 as shown in Figure 1 is carried out
Control to illustrate.That is, control device 25 has following function：When sample gas is gathered, controlling switch valve 38,39,40
Action, be adapted such that sample gas can from sampling pipe arrangement 22 and Bifurcation System 31 be flowed into the side of test portion harvester 30.
In addition, as switch valve 38,39,40, exemplified motor valve.
Piping system 10 has the connection system 32 as the 1st piping system, and the connection system 32 has can match somebody with somebody from sampling
Pipe 22, fork pipe arrangement 35 obtain sample gas and the sample gas are returned to into the stream of fork pipe arrangement 36, sampling pipe arrangement 22.Should
Piping system 10 also has the acquisition system 50 and the pumped vacuum systems 51 as the 3rd piping system as the 2nd piping system,
The acquisition system 50 has the stream from the fork of connection system 32 and has as the installation portion for loading and unloading test portion collection container 56
Coupler 57, the pumped vacuum systems 51 has the stream from the fork of acquisition system 50 and is connected with vavuum pump 69.
Main pipe arrangement 42 is provided with to connection system 32.The main pipe arrangement 42 of connection system 32 via with fork pipe arrangement 35,36
Connecting portion 35a, 36a relative connecting portion 42a, 42b is connected to Bifurcation System 31.In the main pipe arrangement 42 of connection system 32, one
Match somebody with somebody pipe portion 42c with pipe portion 42d and connection upstream in downstream of the upstream of connecting portion 42a sides with pipe portion 42c, another connecting portion 42b sides
It is integrally formed with pipe portion 42e with the centre between pipe portion 42d with downstream.
The respective midway of pipe portion 42d is provided with switch valve 43,44 with pipe portion 42c and downstream in upstream.It is provided with bypass
Pipe arrangement 45, the bypass pipe arrangement 45 connection upstream midway with pipe portion 42d with pipe portion 42c and downstream, be configured in than each switch valve 43,
44 will be near the middle side with pipe portion 42e, it is ensured that downstream match somebody with somebody pipe portion via bypass pipe arrangement 45 with pipe portion 42c from upstream
The stream of 42d.Regulating valve 46 is provided with the midway of bypass pipe arrangement 45.In addition, as switch valve 43,44, exemplified electromagnetism
Valve, as regulating valve 46, exemplified needle valve.
Test portion harvester 30 is connected with acquisition system 50.Acquisition system 50 and the pumped vacuum systems in half-way fork
51 connections, and pumped vacuum systems 51 is connected with the air introduction system 52 as the 4th piping system, the energy of air introduction system 52
Air is imported to acquisition system 50 by the pumped vacuum systems 51.
The main pipe arrangement 53 with the stream from middle pipe arrangement portion 42e forks is set in acquisition system 50.Match somebody with somebody pipe portion middle
42e is provided with the switch valve 54 as triple valve with the link position (diverging positions) of the main pipe arrangement 53 of acquisition system 50.Adopting
The leading section of the main pipe arrangement 53 of collecting system 50 is provided with the coupler 57 for installing the test portion collection container 56 with ball valve 55.
The midway of the main pipe arrangement 53 between switch valve 54 and coupler 57 is provided with switch valve 58.The switch valve 58 is from vacuumizing
The side of coupler 57 is configured in from the point of view of the diverging positions S of system 51.As switch valve 54,58, exemplified magnetic valve.
Pumped vacuum systems 51 includes the diagram upper and lower from the diverging positions S with the main pipe arrangement 53 of acquisition system 50 along Fig. 2
To the main pipe arrangement 62 of fork.Thus, it is ensured that the main pipe arrangement 62 for passing through the main pipe arrangement 53 of acquisition system 50 and pumped vacuum systems 51
Between stream.The main pipe arrangement 62 of pumped vacuum systems 51 is provided with pressure sender unit 64 an end, the other end with
The position that the connecting portion 37a of fork pipe arrangement 37 is relative is provided with ringent connecting portion 62b.Pressure sender unit 64 is via cable etc.
Electrically connect with control unit 34.
Additionally, on the main pipe arrangement 62 of pumped vacuum systems 51, the main pipe arrangement 53 from acquisition system 50 diverging positions S with
Vice 65 and switch valve 66 are provided between pressure sender unit 64.Additionally, on the main pipe arrangement 62 of pumped vacuum systems 51, from
Between the diverging positions S and connecting portion 62b of the main pipe arrangement 53 of acquisition system 50, it is provided with out near diverging positions S sides
Close valve 67, regulating valve 68, vavuum pump 69 and switch valve 70.Vavuum pump 69 is electrically connected via cable etc. with control unit 34.In addition,
As switch valve 67,70, exemplified magnetic valve, as regulating valve 68, exemplified needle valve.
Connecting portion 35a, 36a, 37a and the main pipe arrangement 42 of connection system 32 of each fork pipe arrangement 35,36,37 shown in Fig. 2
And connecting portion 42a, 42b, 62b of the main pipe arrangement 62 of pumped vacuum systems 51 connects respectively and fixed.Thus, can make sample gas from
Bifurcation System 31 is flowed in test portion harvester 30, and makes sample gas return to Bifurcation System from test portion harvester 30
31。
Air introduction system 52 is configured to main pipe arrangement 76.The main pipe arrangement 76 of air introduction system 52 and pumped vacuum systems
51 main pipe arrangement 62 connects, it is ensured that stream.As shown in Fig. 2 for the main pipe arrangement 76 of air introduction system 52, it is in switch valve
Position between 67 and vavuum pump 69, is connected with the main pipe arrangement 62 of pumped vacuum systems 51.
As shown in Fig. 2 being provided with filter 77 in the end of the main pipe arrangement 76 of air introduction system 52 so that air energy Jing
Flowed into by filter 77.As shown in Fig. 2 being provided with switch valve 78 in the midway of the main pipe arrangement 76 of air introduction system 52.In addition,
As switch valve 78, exemplified magnetic valve.
The switch valve of present embodiment is used for sample gas to the importing of piping system, gas decompression and air introduction
The switch control rule of stream, the system architecture, the quantity of switch valve, the configuration of switch valve for the piping system for installing switch valve does not have
There is restriction.
In addition, the switch valve 43,44,54,58,66,67,70,78 shown in Fig. 2 is only illustrated, any knot can be adopted
The valve of structure.Additionally, switch valve 43,44,54,58,66,67,70,78 can be automatic valve, or hand-operated valve.Setting switch
In the case that valve 43,44,54,58,66,67,70,78 is automatic valve, above-mentioned switch valve is electric with control unit 34 via cable etc.
Connection, is thus controlled.Hereinafter, exemplified switch valve 43,44,54,58,66,67,70,78 is carried out for the situation of automatic valve
Explanation.
The test portion collection action of the test portion harvester in sample gas of the collection as test portion is illustrated by the use of Fig. 3 to Fig. 9
(test portion acquisition method).Hereinafter, in Fig. 3～Fig. 9, to main switch valve mark zero × symbol illustrating.Zero
Mark represents and opens valve and ensure that the state of stream, × mark represent the state of stream of having cut off valve breakdown.
(preparation process in advance)
As shown in figure 3, being set to that test portion collection container 56 is installed on the state of coupler 57.Now, using control unit 34, make
Switch valve 54 is off state, cuts off the stream between the main pipe arrangement 42 and the main pipe arrangement 53 of acquisition system 50 of connection system 32
Road.Switch valve 54 is triple valve, the main pipe arrangement 42 of the state representation connection system 32 that switch valve 54 is opened and acquisition system 50
Main pipe arrangement 53 between fluid communication state, the main pipe arrangement 42 of the state representation connection system 32 that switch valve 54 is turned off with
(the main pipe arrangement 42 of connection system 32 matches somebody with somebody pipe portion to the state that stream between the main pipe arrangement 53 of acquisition system 50 is cut off from upstream
42c is via middle with fluid communication of pipe portion 42e to downstream with pipe portion 42d).Using control unit 34, make switch valve 58 and open
Close valve 67 and be in open state, make switch valve 78 be off state.Additionally, regulating valve 68 carries out aperture adjustment, at ball valve 55
In open state.Thus, acquisition system 50, test portion collection container 56 and pumped vacuum systems 51 are in connection status.
As described above, switching using the control system of control unit 34, and the action of vavuum pump 69 is made using control unit 34, it is right
Vacuumized in pumped vacuum systems 51.Inside thereby, it is possible to make test portion collection container 56 by acquisition system 50 is true
It is empty.The vacuum state guarantees the inside for flowing into test portion collection container 56 to sample gas.Pressure in pumped vacuum systems 51
Measured by pressure sender unit 64.In addition, the piping system part P1 being shown in broken lines in Fig. 3 after vacuumizing.As shown in figure 3,
Also cause in air introduction system 52 till switch valve 78 partway as the state after vacuumizing.
(sample gas is to the importing in test portion collection container：1st step)
Using control device 25, the switch valve 38,39 of the Bifurcation System 31 of radgas monitoring system is controlled to into open shape
State, by switch valve 40 off state is controlled to (with reference to Fig. 4).
In the connection system 32 of test portion harvester 30, it is open state to make switch valve 43,44 using control unit 34.
After the certain hour till the residual gas in pipe arrangement being played from the state of Fig. 3 and is replaced as sample gas, by switch valve
54 open, so that it is guaranteed that stream so that sample gas can flow into acquisition system 50 from connection system 32.
As shown in figure 4, using control unit 34, switch valve 58 is controlled into into open state, by switch valve 67 and switch valve
78 control into off state.Now, the ball valve 55 of test portion collection container 56 is set in advance open state.
Thus, sample gas is flowed into connection system 32 and acquisition system 50 from sampling pipe arrangement 22 by Bifurcation System 31.
Then, sample gas imports to the inside of test portion collection container 56 from sampling system 50.Thus, can be by the sample of 100% concentration
Gas is imported in test portion collection container 56.
Herein, if the radioactive concentration determined by radioactivity determination device 1 is below threshold value, follow-up the can not be implemented
2 steps unload test portion collection container 56 to the 4th step using the 5th step described later, are transferred to analysis operation.On the other hand,
If the radioactive concentration determined by radioactivity determination device 1 is more than threshold value, using control unit 34 dilution described later to be implemented
Action.That is, control unit 34 receives the radioactive concentration measurement result from radioactivity determination device 1, dense based on the radioactivity
Degree measurement result, dilution factor when deciding whether to be diluted, diluting.Herein, illustrate what is determined by radioactivity determination device 1
Radioactive concentration exceedes threshold value, and control unit 34 continues the situation for implementing dilution action.
(gas decompression action：Second step)
Next, as shown in figure 5, using control unit 34, switch valve 54 is controlled into into off state, cut-out connection system 32 with
Stream between acquisition system 50.Thus, the sample gas for residuing in connection system 32 can be from middle pipe arrangement portion 42e via downstream
Sampling pipe arrangement 22 is returned to pipe portion 42d and fork pipe arrangement 36.Additionally, in control device 25, by the switch of Bifurcation System 31
Valve 38,39 controls into off state, and the switch valve 40 of sampling pipe arrangement 22 is controlled into into open state.Thus, it can be ensured that by adopting
The stream of the sample gas of sample pipe arrangement 22.
As shown in figure 5, using control unit 34, switch valve 58 and switch valve 67 are controlled into into open state, on the other hand,
Switch valve 78 is controlled into into off state.Now, ball valve 55 and regulating valve 68 maintain open state.That is, piping system is cut off
10 stream with external connection, also, open state is between test portion collection container 56 and piping system 10.
Then, using control unit 34, the action of vavuum pump 69 is made, till being depressurized to the gas pressure for specifying.Thus, to figure
The piping system 10 (piping system part P2) that test portion collection container 56 shown in 5 dotted line is connected is vacuumized.For example,
The sample gas of collection is being diluted in the case of 1/10, in above-mentioned 1st step, if getting in test portion collection container 56
Sample gas be 1 atmospheric pressure, then be depressurized to 0.1 atmospheric pressure using vavuum pump 69.Pressure relief value can be by pressure sender unit 64
Measurement, the measurement result is sent to control unit 34.
Control unit 34 based on from radioactivity determination device 1 radioactive concentration measurement result determine dilution factor, and with
The dilution factor matchingly determines pressure relief value.For example, sample gas is diluted to into 1/5 be just diluted to sample gas can only leaning on
In the case of guaranteeing the level of security, in above-mentioned 1st step, if the sample gas got in test portion collection container 56 is
1 atmospheric pressure, then be depressurized to 0.2 atmospheric pressure using vavuum pump 69.So, according to target dilution factor, the air pressure of decompression is controlled.
(vacuum action：Third step)
Next, as shown in fig. 6, compared with the state of Fig. 5, in order to will cut between test portion collection container 56 and piping system 10
It is disconnected, ball valve 55 is turned off.Other system switching states are identical with Fig. 5.Then, in Fig. 6, using control unit 34, vavuum pump is made
69 actions, by the piping system 10 (piping system part P3) of the cut-out side shown in the dotted line of Fig. 6 vacuum is controlled into.In addition,
With regard to vacuum, by using pressure sender unit 64 evacuated pressure, the sample collected in test portion collection container 56 are correctly determined
Gas pressure, can calculate and determine the collection capacity of sample gas, it is therefore not necessary to absolute vacuum is reached, even with general vacuum
Pump 69 also becomes below 1Torr.
In addition, in Fig. 6, because the ball valve 55 for making test portion collection container 56 is off state, therefore, test portion collection container 56
Do not affected by vacuum.That is, the inside of test portion collection container 56 is maintained at 0.1 in the case where sample gas is diluted to 1/10
The state of air pressure.
(air importing action：4th step)
Next, from above-mentioned third step, as shown in fig. 7, using control unit 34, by test portion collection container 56 and with piping
Switch valve 78 between system 10 controls into open state.Now, the ball valve 55 of test portion collection container 56 is set in advance off state.
Other system switching states are identical with Fig. 6.
As shown in fig. 7, by the way that switch valve 78 is opened, can via filter 77 by air (air of atmospheric pressure) from air
Import system 52 imports to pumped vacuum systems 51 and acquisition system 50.Thus, air introduction system 52, pumped vacuum systems 51 and adopt
Air of the collecting system 50 full of 1 atmospheric pressure.
Next, as shown in figure 8, opening the ball valve 55 of test portion collection container 56.Thus, air is flowed into test portion collection and holds
Inside device 56.Now, the sample gas of existing 0.1 atmospheric pressure in the inside of test portion collection container 56 is flowed into.Then, air introduction system
In the state of the air full of 1 atmospheric pressure in system 52, pumped vacuum systems 51 and acquisition system 50, therefore, by 0.1 air
The sample gas of pressure mixes with the air of 0.9 atmospheric pressure so that also become 1 atmospheric pressure inside test portion collection container 56.Its
As a result, in test portion collection container 56, state of the sample gas in being diluted to 1/10.By the sample of test portion collection container 56
Gas dilution to the original gas for being collected 1/10 in the case of, so terminate dilution action.On the other hand, due to sample
The radioactive concentration of gas is very high, therefore, only cannot make the radioactivity in test portion collection container 56 by 1 dilution action sometimes
Concentration drops to the level of the security that can ensure that enough.In the case, the dilution action of repeat step 2 to step 4, will try
Sample gas in material collection container 56 is diluted to the level that can ensure that security.Then, above-mentioned second step is repeated to the 4th step
Suddenly, until it reaches the dilution factor of target.
(test portion collection container unloads action：5th step)
Next, from the state of Fig. 8, using control unit 34, switch valve 58 is controlled into into off state.In Fig. 8, will switch
Valve 78 also controls into off state.Then, the ball valve 55 for making test portion collection container 56 is off state, as shown in figure 9, from coupling
Device 57 unloads test portion collection container 56.
Using above-mentioned each action, the sample gas after dilution can be collected test portion collection container 56, can make security and
Operability is excellent than ever.
Additionally, each action of the dilution test portion using above-mentioned test portion harvester 30, can simply and suitably be carried out
The dilution of test portion.
Industrial practicality
Test portion harvester of the invention, when accident etc. is abnormal, even if the radioactive concentration of determined gas reaches
To high concentration level, also determined gas can be gathered with diluted state, can suitably be used in nuclear power generation facility etc..
Symbol description
1 radioactivity determination device
2 chambers
3 low scope detectors
4 high scope detectors
10 piping systems
20 aiutages
21st, 22 sampling pipe arrangement
25 control devices
30 test portion harvesters
31 Bifurcation Systems
32 connection systems (the 1st piping system)
34 control units
38th, 39,40 switch valve
42nd, 53,62,76 main pipe arrangement
43rd, 44,54,58,66,67,70,78 switch valve
46th, 68 regulating valve
50 acquisition systems (the 2nd piping system)
51 pumped vacuum systems (the 3rd piping system)
52 air introduction systems (the 4th piping system)
55 ball valves
56 test portion collection containers
57 couplers
64 pressure sender units
69 vavuum pumps
77 filters
Claims (7)
1. a kind of test portion harvester, it is characterised in that include：
Piping system, the pipe arrangement that the piping system is used to be flow through from the sample gas of measurement radioactive concentration obtains collection
Sample gas；
Installation portion, the installation portion is arranged at the piping system and for loading and unloading test portion collection container；
It is arranged at the multiple switch valve of the piping system；
The vavuum pump that the piping system is vacuumized；And
Control unit, the control unit is controlled by described in the state of the test portion collection container is installed on into the installation portion
The decompression in the piping system and the air introduction via the switch valve that vavuum pump is carried out, dilute the test portion collection and hold
Sample gas concentration in device.
2. test portion harvester as claimed in claim 1, it is characterised in that
Radioactive concentration measurement result of the described control unit based on the radioactivity determination device for being arranged at the pipe arrangement, determines sample
Whether the dilution factor of product gas concentration will be diluted.
3. test portion harvester as claimed in claim 1 or 2, it is characterised in that
Described control unit is determined in the piping system that carried out by the vavuum pump according to the dilution factor of sample gas concentration
Pressure reducing horizontal.
4. test portion harvester as claimed any one in claims 1 to 3, it is characterised in that
Described control unit repeats the decompression in the piping system that the vavuum pump is carried out and via the switch
The air introduction of valve, until the sample gas concentration in the test portion collection container is less than setting.
5. the test portion harvester as any one of Claims 1-4, it is characterised in that
The piping system has the 1st piping system, the 2nd piping system and the 3rd piping system, and the 1st piping system has energy
The sample gas is obtained from the pipe arrangement and the sample gas is returned to into the stream of the pipe arrangement, the 2nd piping system
With the stream diverged from the 1st piping system and with the installation portion, the 3rd piping system has matches somebody with somebody from the described 2nd
The stream of guard system fork is simultaneously connected with the vavuum pump.
6. test portion harvester as claimed in claim 5, it is characterised in that
Being connected with the 3rd piping system can pass through the 3rd piping system imports air to the 2nd piping system the 4th
Piping system,
Described control unit is controlled, to reduce pressure to the sample gas in the test portion collection container, and by institute
State sample gas and mixed with the air imported from the 4th piping system so that the sample in the test portion collection container
Gas concentration reaches regulation dilution factor.
7. a kind of test portion acquisition method, the test portion acquisition method is the test portion acquisition method in test portion harvester, and the test portion is adopted
Acquisition means include：Piping system, the pipe arrangement that the piping system is used to be flow through from the sample gas of measurement radioactive concentration is obtained
The sample gas of collection；Installation portion, the installation portion is arranged at the piping system and for loading and unloading test portion collection container；Arrange
In the multiple switch valve of the piping system；And to vavuum pump that the piping system is vacuumized, it is characterised in that the examination
Material acquisition method is comprised the steps of：
1st step, in the 1st step, the test portion collection container to being installed on the installation portion is imported and obtained from the pipe arrangement
The sample gas for taking；
Second step, in the second step, cuts off the stream with external connection of the piping system, also, adopts in the test portion
In the state of opening between collection container and the piping system, it is connected with the test portion collection container using the vavuum pump pair
The piping system is reduced pressure；
Third step, in the third step, will cut off between the test portion collection container and the piping system, and using described true
The piping system of side of the empty pump to being cut off is vacuumized；And
4th step, in the 4th step, will be open between the test portion collection container and the piping system, and by air introduction
To the piping system, the sample gas in the test portion collection container is diluted.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015205392A JP6380326B2 (en) | 2015-10-19 | 2015-10-19 | Sampling apparatus and sampling method |
| JP2015-205392 | 2015-10-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106596206A true CN106596206A (en) | 2017-04-26 |
| CN106596206B CN106596206B (en) | 2019-03-01 |
Family
ID=58555604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610146372.4A Active CN106596206B (en) | 2015-10-19 | 2016-03-15 | Sample acquisition device and sample acquisition method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6380326B2 (en) |
| CN (1) | CN106596206B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098673A (en) * | 2020-10-29 | 2020-12-18 | 杭州智行远机器人技术有限公司 | Automatic sampling control system and control method based on SCARA robot |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3131373A1 (en) * | 2021-12-27 | 2023-06-30 | Electricite De France | Installation for taking samples of radioactive gaseous effluents |
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| JPS56155880A (en) * | 1980-04-10 | 1981-12-02 | Combustion Eng | Method and system of sampling and detecting rare gas |
| JPH0410021B2 (en) * | 1982-12-08 | 1992-02-24 | ||
| JPH04204034A (en) * | 1990-11-30 | 1992-07-24 | Kyushu Electric Power Co Inc | Gas sample dilution and sampling device |
| CN102323295A (en) * | 2011-09-30 | 2012-01-18 | 中广核工程有限公司 | System for monitoring concentration of hydrogen in containment vessel |
| CN103728163A (en) * | 2014-01-16 | 2014-04-16 | 中国工程物理研究院核物理与化学研究所 | Fast sampling system for full tritium in gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5839584U (en) * | 1981-09-09 | 1983-03-15 | 富士電機株式会社 | Noble gas sampling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56155880A (en) * | 1980-04-10 | 1981-12-02 | Combustion Eng | Method and system of sampling and detecting rare gas |
| JPH0410021B2 (en) * | 1982-12-08 | 1992-02-24 | ||
| JPH04204034A (en) * | 1990-11-30 | 1992-07-24 | Kyushu Electric Power Co Inc | Gas sample dilution and sampling device |
| CN102323295A (en) * | 2011-09-30 | 2012-01-18 | 中广核工程有限公司 | System for monitoring concentration of hydrogen in containment vessel |
| CN103728163A (en) * | 2014-01-16 | 2014-04-16 | 中国工程物理研究院核物理与化学研究所 | Fast sampling system for full tritium in gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112098673A (en) * | 2020-10-29 | 2020-12-18 | 杭州智行远机器人技术有限公司 | Automatic sampling control system and control method based on SCARA robot |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106596206B (en) | 2019-03-01 |
| JP2017078578A (en) | 2017-04-27 |
| JP6380326B2 (en) | 2018-08-29 |
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