CN206479238U - The fast calibration device of nuclear power station fire alarm system hydrogen gas detector - Google Patents
The fast calibration device of nuclear power station fire alarm system hydrogen gas detector Download PDFInfo
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- CN206479238U CN206479238U CN201720167336.6U CN201720167336U CN206479238U CN 206479238 U CN206479238 U CN 206479238U CN 201720167336 U CN201720167336 U CN 201720167336U CN 206479238 U CN206479238 U CN 206479238U
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Abstract
The utility model is related to a kind of fast calibration device of nuclear power station fire alarm system hydrogen gas detector, the second source of the gas, the switching valve being sequentially connected in series by pipeline, flow detector including the first source of the gas for providing air, for providing standard hydrogen, and be connected to connect the measurement interface demarcated with hydrogen gas detector to be measured with flow detector.First source of the gas, the second source of the gas are connected with switching valve respectively, switching valve switch operating state with respectively by the first source of the gas, the second source of the gas gas through flow detector to measurement interface output.Caliberating device of the present utility model carries out the demarcation of zero point and range with air, hydrogen respectively, and calibration process simple and fast, data are accurately controllable, one people's operation will soon be completed, manpower is saved, operating efficiency is improved, allows the utilization rate of nuclear power generating sets to get a promotion.
Description
Technical field
The utility model is related to nuclear power field, more specifically to a kind of nuclear power station fire alarm system hydrogen gas detector
Fast calibration device.
Background technology
Hydrogen gas detector utilizes electrochemical principle, when having tested gas in air or evaporating, and detector is to produce
To being tested the proportional electric signal of gas concentration in air, the signal is passed to controller, controller shown after processing by
Survey gas concentration.When tested gas concentration meets or exceeds setting value, controller is to send sound, visual alarm and output to have
Control signal is closed, starts corresponding control device, so as to avoid the generation of major accident.Because there is intrinsic drift in gas sensor
Characteristic, therefore need to be periodically with compressed air and 50%LEL hydrogen to its zero point and range designation.
The fire-fighting system nuclear island of nuclear power station generally has many hydrogen gas detectors, and demarcation in every 6 months on request once, is marked
Corresponding nuclear power generating sets are unavailable between periodically.In calibration process, manpower need to be leaned on frequently to dismount instrument pipeline, manually control mark
Throughput and duration of ventilation, need 5 people to coordinate and complete, and there is inefficiency and flow controls unstable and influences calibration mass feelings
Condition, when particularly having the larger air-flow to blow to detector, there is the hidden danger for damaging gas sensor.It is each to visit in terms of time control
Device demarcation is surveyed to complete about to need 20 minutes, therefore the work need to take the nuclear power generating sets substantial amounts of time, it is less efficient.
Utility model content
The technical problems to be solved in the utility model is that there is provided a kind of the quick of nuclear power station fire alarm system hydrogen gas detector
Caliberating device.
The utility model solves the technical scheme that its technical problem used：Construct a kind of nuclear power station fire alarm system hydrogen
The fast calibration device of detector, including for providing the first source of the gas of air, the second source of the gas for providing standard hydrogen, leading to
Switching valve that piping is sequentially connected in series, flow detector, and be connected with the flow detector with hydrogen to be measured
The measurement interface that the connection of gas detector is demarcated；
First source of the gas, the second source of the gas are connected with the switching valve respectively, the switching valve switch operating state with point
The gas of first source of the gas, the second source of the gas is not exported through the flow detector to the measurement interface.
Preferably, the flow detector includes flowmeter.
Preferably, the flow is calculated as one kind in vane-wheel type flowmeter, differential pressure flowmeter, ultrasonic flowmeter.
Preferably, the measurement interface is provided with the joint of connection corresponding with the hydrogen gas detector to be measured.
Preferably, the pipeline is copper pipe.
Preferably, the fast calibration device also include control unit, described control unit respectively with the switching valve, stream
Gauge is communicated to connect, to send switching signal to the switching valve and receive the flow signal of the flow detector.
Preferably, the regulating valve of adjusting gas flow is additionally provided between the switching valve and the flow detector.
Preferably, the regulating valve is communicated to connect with described control unit, to send Regulate signal to the regulating valve.
Preferably, it is first source of the gas, the second source of the gas, switching valve, flow that the fast calibration device, which also includes being used for,
Detection means, control unit, regulating valve provide the power supply unit of electric energy.
Preferably, the fast calibration device also includes moving cart, first source of the gas, the second source of the gas, switching valve, stream
Amount detecting device, control unit, regulating valve, power supply unit are arranged in the moving cart.
Implement the fast calibration device of nuclear power station fire alarm system hydrogen gas detector of the present utility model, with following beneficial effect
Really：Caliberating device of the present utility model carries out the demarcation of zero point and range with air, hydrogen respectively, calibration process simple and fast,
Data are accurately controllable, and people operation will soon be completed, and saved manpower, improved operating efficiency, allow nuclear power generating sets
Utilization rate gets a promotion.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing：
Fig. 1 is the fast calibration device of the nuclear power station fire alarm system hydrogen gas detector in the utility model embodiment to be measured
Principle schematic diagram when hydrogen gas detector is demarcated.
Embodiment
In order to be more clearly understood to technical characteristic of the present utility model, purpose and effect, accompanying drawing is now compareed detailed
Illustrate embodiment of the present utility model.
As shown in figure 1, entering rower to nuclear power station fire alarm system hydrogen gas detector in one preferred embodiment of the utility model
Fixed fast calibration device includes for the first source of the gas 1 for providing air, the second source of the gas 2 for providing standard hydrogen, passed through
Switching valve 3 that pipeline 7 is sequentially connected in series, flow detector 4, and be connected with flow detector 4 with hydrogen to be measured
Detector 6 connects the measurement interface 5 demarcated.
First source of the gas 1, the second source of the gas 2 are usually canned, and convenient carry carries.First source of the gas 1, the second source of the gas 2 respectively with
Switching valve 3 is connected, and the switch operating state of switching valve 3 is respectively to fill the gas of the first source of the gas 1, the second source of the gas 2 through flow detection
4 are put to export to measurement interface 5.
In demarcation, scaling method comprises the following steps：
S1, allow provide air the first source of the gas 1 connect 6 with hydrogen gas detector to be measured, by specific flow persistently to be measured
Hydrogen gas detector 6 is blown after one section of duration, stops blowing to hydrogen gas detector 6 to be measured, completes the zero point mark of hydrogen gas detector 6 to be measured
It is fixed.
Specifically, in the present embodiment, first allow the first source of the gas 1 to be connected with switching valve 3, allow air to be examined through switching valve 3, flow
Hydrogen gas detector 6 to be measured is blown by specific flow after surveying the outflow measurement interface 5 of device 4, duration is usually 20 seconds, has been blown
After stop blowing to hydrogen gas detector 6 to be measured.Due to no hydrogen, the result that hydrogen gas detector 6 to be measured is measured should be zero, can
The mark of hydrogen gas detector 6 to be measured is allowed to arrive zero point.
S2, demarcate after zero point, allowed the second source of the gas 2 of offer standard hydrogen to be connected with hydrogen gas detector 6 to be measured, by pre-
If flow persistently hydrogen gas detector 6 to be measured is blown after one section of duration, stop blowing to hydrogen gas detector 6 to be measured, realize to be measured
The demarcation of the range of hydrogen gas detector 6.
Specifically, in the present embodiment, then allow the second source of the gas 2 to be connected with switching valve 3, allow hydrogen to be examined through switching valve 3, flow
Persistently hydrogen gas detector 6 to be measured is blown according to specific flow after surveying the outflow measurement interface 5 of device 4, lasting duration is generally
35 seconds, flow was the preset value of standard hydrogen, such as 0.9L/Min or other flow standards, is stopped after having blown to hydrogen detection to be measured
Device 6 is blown.Due to there was only hydrogen, it is possible to achieve the demarcation of range.
It is S3, last, then allow the first source of the gas 1 to be connected with hydrogen gas detector 6 to be measured, when blowing one section to hydrogen gas detector 6 to be measured
After length, stop blowing to hydrogen gas detector 6 to be measured, complete demarcation.
Specifically, in the present embodiment, then allow the first source of the gas 1 to be connected with switching valve 3, allow air to be examined through switching valve 3, flow
Hydrogen gas detector 6 to be measured is blown after surveying the outflow measurement interface 5 of device 4, lasting duration is generally 15 seconds, is stopped after the time is much of that
Blown to hydrogen gas detector 6 to be measured, you can complete demarcation.
Calibration process simple and fast, data are accurately controllable, and people's operation will soon be completed, and saved manpower, lifted
Operating efficiency, allows the utilization rate of nuclear power generating sets to get a promotion.Preferably, pipeline 7 is copper pipe, it is possible to reduce external temperature
Influence to gas in pipeline 7, lifts the accuracy of demarcation.In other embodiments, also can be by switching valve 3, gas through flow
Detection means 4 is omitted, and is directly connected the first source of the gas 1, the second source of the gas 2 with hydrogen gas detector 6 to be measured respectively using manual switching,
The first source of the gas 1, the second source of the gas 2 itself is allowed to be blown specific duration to hydrogen gas detector 6 to be measured by specific flow, more than realization
The demarcation of each step.
Further, flow detector 4 includes flowmeter, the flow velocity for measuring the gas flowed through, allows gas by mark
The flow of provisioning request is flowed through, and flow can be monitored in real time, improves the accuracy and precision of demarcation.
In certain embodiments, flow is calculated as one in vane-wheel type flowmeter, or differential pressure flowmeter, ultrasonic flowmeter
Kind, it can guarantee that the accuracy of measurement.
The joint that interface 5 is provided with connection corresponding with hydrogen gas detector 6 to be measured is measured, is realized and hydrogen gas detector 6 to be measured
Quick connection, lifted demarcation efficiency.In other embodiments, measurement interface 5 also can be with hydrogen gas detector 6 to be measured using slotting
Structure or flange bindiny mechanism are pulled out, can be realized and quickly be connected and can guarantee that sealing.
Fast calibration device also includes control unit 8, and control unit 8 communicates with switching valve 3, flow detector 4 respectively
Connection, to send switching signal to switching valve 3 and receive the flow signal of flow detector 4.
Preferably, the regulating valve 9 of adjusting gas flow is additionally provided between switching valve 3 and flow detector 4, is had
Regulating valve 9, can more direct management and control flow.In other embodiments, also can be in the outlet position of the first source of the gas 1, the second source of the gas 2
The device of regulation flow is installed, allows flow that management and control is adjusted when the first source of the gas 1, the discharge of the second source of the gas 2.
Regulating valve 9 is communicated to connect with control unit 8, to send Regulate signal to regulating valve 9.Can demarcation when root
Flow is adjusted in real time according to measurement situation, makes flow more accurate.
Further, fast calibration device also includes being used for for the first source of the gas 1, the second source of the gas 2, switching valve 3, flow inspection
The power supply unit that device 4, control unit 8, regulating valve 9 provide electric energy is surveyed, is allowed in demarcation, without going for external power supply, more
Convenience.Power supply unit is electrically connected with control unit, and controlling switch 81, control electricity are provided between power supply unit and control unit
Startup, the closing in source.
In certain embodiments, fast calibration device also includes moving cart, the first source of the gas 1, the second source of the gas 2, switching valve
3rd, flow detector 4, control unit 8, regulating valve 9, power supply unit are arranged in moving cart, can allow fast calibration device
Overall to move together, the convenient hydrogen gas detector to be measured 6 to diverse location is demarcated, and the problem of eliminating dismounting lifts work
Make efficiency.
It is to be appreciated that above-mentioned each technical characteristic can be used in any combination and unrestricted.
Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical fields, are similarly included in scope of patent protection of the present utility model.
Claims (10)
1. a kind of fast calibration device of nuclear power station fire alarm system hydrogen gas detector, it is characterised in that including for providing air
The first source of the gas（1）, the second source of the gas for providing standard hydrogen（2）, pass through pipeline（7）The switching valve being sequentially connected in series
（3）, flow detector（4）, and with the flow detector（4）Connection with hydrogen gas detector to be measured（6）Connect into
The fixed measurement interface of rower（5）；
First source of the gas（1）, the second source of the gas（2）Respectively with the switching valve（3）Connection, the switching valve（3）Switch operating
State is with respectively by first source of the gas（1）, the second source of the gas（2）Gas through the flow detector（4）To the measurement
Interface（5）Output.
2. fast calibration device according to claim 1, it is characterised in that the flow detector（4）Including flow
Meter.
3. fast calibration device according to claim 2, it is characterised in that the flow is calculated as vane-wheel type flowmeter, difference
One kind in pressure type flowmeter, ultrasonic flowmeter.
4. fast calibration device according to claim 1, it is characterised in that the measurement interface（5）Be provided with it is described
Hydrogen gas detector to be measured（6）The joint of correspondence connection.
5. fast calibration device according to claim 1, it is characterised in that the pipeline（7）For copper pipe.
6. the fast calibration device according to any one of claim 1 to 5, it is characterised in that the fast calibration device is also
Including control unit（8）, described control unit（8）Respectively with the switching valve（3）, flowmeter communication connection, to be cut to described
Change valve（3）Send switching signal and receive the flow detector（4）Flow signal.
7. fast calibration device according to claim 6, it is characterised in that the switching valve（3）With the flow detection
Device（4）Between be additionally provided with the regulating valve of adjusting gas flow（9）.
8. fast calibration device according to claim 7, it is characterised in that the regulating valve（9）With described control unit
（8）Communication connection, with to the regulating valve（9）Send Regulate signal.
9. fast calibration device according to claim 7, it is characterised in that the fast calibration device is also included for being
First source of the gas（1）, the second source of the gas（2）, switching valve（3）, flow detector（4）, control unit（8）, regulating valve（9）Carry
The power supply unit of power supply energy.
10. fast calibration device according to claim 9, it is characterised in that the fast calibration device also includes movement
Dolly, first source of the gas（1）, the second source of the gas（2）, switching valve（3）, flow detector（4）, control unit（8）, regulating valve
（9）, power supply unit be arranged on the moving cart on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720167336.6U CN206479238U (en) | 2017-02-23 | 2017-02-23 | The fast calibration device of nuclear power station fire alarm system hydrogen gas detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720167336.6U CN206479238U (en) | 2017-02-23 | 2017-02-23 | The fast calibration device of nuclear power station fire alarm system hydrogen gas detector |
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| CN206479238U true CN206479238U (en) | 2017-09-08 |
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| CN201720167336.6U Active CN206479238U (en) | 2017-02-23 | 2017-02-23 | The fast calibration device of nuclear power station fire alarm system hydrogen gas detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918788A (en) * | 2018-09-06 | 2018-11-30 | 汉威科技集团股份有限公司 | The finished product mark checking device and mark check system of detector |
| CN108954005A (en) * | 2018-09-12 | 2018-12-07 | 阳江核电有限公司 | A kind of multi-channel fluid pipeline reversing service |
-
2017
- 2017-02-23 CN CN201720167336.6U patent/CN206479238U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918788A (en) * | 2018-09-06 | 2018-11-30 | 汉威科技集团股份有限公司 | The finished product mark checking device and mark check system of detector |
| CN108954005A (en) * | 2018-09-12 | 2018-12-07 | 阳江核电有限公司 | A kind of multi-channel fluid pipeline reversing service |
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