CN209589978U - A kind of hydrogen meter detection device - Google Patents
A kind of hydrogen meter detection device Download PDFInfo
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- CN209589978U CN209589978U CN201920165672.6U CN201920165672U CN209589978U CN 209589978 U CN209589978 U CN 209589978U CN 201920165672 U CN201920165672 U CN 201920165672U CN 209589978 U CN209589978 U CN 209589978U
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Abstract
The utility model discloses a kind of hydrogen meter detection devices.The device includes: inventiona gas treatment module, as in diluent gas input mixing chamber after the air dehydrogenation for that will suck；Hydrogen output module, for inputting the hydrogen of normal concentration into mixing chamber；Mixing chamber, for the diluent gas of input and hydrogen to be sufficiently mixed；Standard detection instrument, for the density of hydrogen in real-time measurement mixing chamber；Detect output module, for by the mixed gas delivery in mixing chamber to be detected hydrogen meter；Control device receives the data of standard detection instrument output, the data of detected hydrogen meter output for controlling the work of hydrogen meter detection device.The utility model can provide the hydrogen of various concentration for its detection for hydrogen meter, to realize that multiple spot concentration of the hydrogen meter in detection range ability detects automatically, convenient for accurately detecting the performance of hydrogen meter, operating error when artificial acquisition calibrating gas is reduced, and reduce testing cost.
Description
Technical field
The utility model relates in analysis instrument quality arbitration technical field more particularly to a kind of hydrogen meter detection device.
Background technique
In recent years, as the progress of China's science and technology has been greatly facilitated the fast development of analysis and detection technology, while
The detection and analysis instrument of many new principles, new method is emerged in large numbers.In face of a large amount of analysis and detecting instrument, how selection analysis instrument
Or the performance of evaluation appts then needs the basic performance by testing and analyzing instrument to judge, including detection limit, sensitivity, standard
The indexs such as exactness, precision.Foreign countries attach great importance to the standardization effort of analysis instrument performance test, and China have in this regard compared with
Big gap causes especially for the instrument index performance of some virtual heights without the test method of preferable testing tool and standard
Many indexs can not verify its authenticity, seriously constrain the industry development of the autonomous innovation of analysis instrument.
With the development of China's gas analysis technology, the hydrogen meter of more and more different operating principles is widely used in
The industries such as mineral exploration, metal casting, security alarm, chemical industry manufacture and seismic monitoring.The important technology of usual hydrogen meter refers to
The important technology index that instrument metering performance is measured when mark such as precision, accuracy, sensitivity, in development, production, use, school
The basic performance of measuring instrument is generally evaluated during standard etc. using the standard hydrogen of actual concentrations.But usual hydrogen meter
Detection range general range is larger, and accurate judgement can not be made to the overall performance of instrument by only measuring several single-point concentration, right
The standard hydrogen demand of each concentration is also larger, and higher cost when causing detecting instrument, detection process is longer, and for inhomogeneity
The hydrogen meter of type is due to measurement method or measuring principle difference is unable to complete while contrast test, needs in long-term continuity test
Very important person is replacement gas cylinder or sampling airbag, can also cause operating error.
Summary of the invention
In order to solve the above-mentioned technical problem the utility model, provides a kind of hydrogen meter detection device, can be survey hydrogen
Instrument provides the hydrogen of various concentration for its detection, to realize multiple spot Concentration Testing of the hydrogen meter in detection range ability, just
In the performance of accurately detection hydrogen meter.
To solve the above-mentioned problems, the utility model is achieved using following technical scheme:
A kind of hydrogen meter detection device of the utility model, comprising:
Inventiona gas treatment module, as in diluent gas input mixing chamber after the air dehydrogenation for that will suck；
Hydrogen output module, for inputting the hydrogen of normal concentration into mixing chamber；
Mixing chamber, for accommodating the diluent gas of inventiona gas treatment module input and the hydrogen of hydrogen output module input, and
It is sufficiently mixed diluent gas and hydrogen；
Standard detection instrument, for the density of hydrogen in real-time measurement mixing chamber；
Detect output module, for by the mixed gas delivery in mixing chamber to be detected hydrogen meter；
Control device, for control inventiona gas treatment module, hydrogen output module, mixing chamber, standard detection instrument, detection it is defeated
Module works out, receives the data of standard detection instrument output, the data of detected hydrogen meter output.
In the present solution, control device receive staff input preparation setting concentration hydrogen instruction after, control
Hydrogen output module inputs normal concentration hydrogen into mixing chamber, while controlling inventiona gas treatment module and inputting dehydrogenation into mixing chamber
Air is sufficiently mixed normal concentration hydrogen and diluent gas as diluent gas dilution standard concentration hydrogen, mixing chamber, standard
Detecting instrument extracts the concentration value that gas is detected, and will test out of mixing chamber and is sent to control device, control device root
According to the output quantity of the concentration value adjustment control hydrogen output module, inventiona gas treatment module that detect, finally make the hydrogen in mixing chamber
Gas concentration reaches setting value, detects output module later for the mixed gas delivery in mixing chamber to detected hydrogen meter, quilt
The density of hydrogen that the hydrogen meter of detection will test is sent to control device, and control device is according to the testing number of detected hydrogen meter
It is judged that the performance of detected hydrogen meter.
Staff can detect according to the multiple density of hydrogen of detection measurement range selection of detected hydrogen meter, will select
Density of hydrogen be input to control device, it is and defeated by the hydrogen of control device control hydrogen meter detection device configuration respective concentration
The detection for giving detected hydrogen meter, the detection data for acquiring detected hydrogen meter judge that detected hydrogen meter is detecting
Performance in range ability, to realize multiple spot Concentration Testing of the hydrogen meter in detection range ability, whole process is automatically complete
At high degree of automation, mushing error are small, safe and reliable.
Preferably, the inventiona gas treatment module includes dirt catcher, dehydrogenation device, the first air pump, flowmeter, the first threeway
Solenoid valve, the first solenoid valve, the second air pump and purification absorption plant, the dust filtration device, dehydrogenation device, the first air pump, flowmeter,
The public air inlet of first three-way magnetic valve is sequentially connected, and the of the first gas outlet of first three-way magnetic valve and mixing chamber
The connection of one air inlet, the first gas outlet of the mixing chamber, the first solenoid valve, the second air pump, purification absorption plant are sequentially connected.
When preparing the hydrogen of setting concentration, the work of the first air pump is pumped into air, and air is filled by dirt catcher dedusting, dehydrogenation
After setting dehydrogenation, flowmeter metering, mixing chamber is inputted as diluent gas, flow by the first gas outlet of the first three-way magnetic valve
The continuous data of meter is sent to control device.When the gas in mixing chamber needs to be discharged, the work of the second air pump will be in mixing chamber
Gas extraction, the gas of extraction is expelled to air after purification absorption plant processing.
Dirt catcher uses aperture for 0.45 μm of miillpore filter, crosses the tiny dust particles in air filtering.Dehydrogenation device is
The trace hydrogen in air is converted to vapor using redox reaction, makes the density of hydrogen in air lower than 0.1ppm.
Dehydrogenation device is a miniature oxidation furnace, and furnace is provided with liner oxidation copper, and air inlet is connect with dirt catcher, gas outlet and the first gas
Pump connection, miniature oxidation furnace central temperature is up to 600 ~ 700 DEG C, and the trace hydrogen in air passes through dehydrogenation device, with copper oxide
Oxidation reaction occurs and generates vapor, the density of hydrogen in air is reduced to close to zero gas, is input to mixing chamber and matches as zero gas
Make the gas of various concentration.Purification absorption plant is one equipped with the activated carbon tube for carrying palladium particle, for absorbing the exhaust gas of discharge
Pollutant reduces the density of hydrogen in exhaust gas to 10ppm hereinafter, to prevent causing Environmental security hidden danger.
Preferably, the hydrogen output module includes standard hydrogen source gas, pressure reducing valve, pressure gage, the second threeway electromagnetism
Valve, third three-way magnetic valve, micro current stabilization module, magnanimity current stabilization module, the 4th three-way magnetic valve, the standard hydrogen source gas according to
It is secondary to be connect by pressure reducing valve, pressure gage with the first air inlet of the second three-way magnetic valve, the second of second three-way magnetic valve
Air inlet is connect with the second gas outlet of the first three-way magnetic valve, the public gas outlet and the three or three of second three-way magnetic valve
The public air inlet of three-way electromagnetic valve connects, and the first gas outlet of the third three-way magnetic valve passes through micro current stabilization module and the 4th
First air inlet of three-way magnetic valve connects, and the second gas outlet of the third three-way magnetic valve passes through magnanimity current stabilization module and the
Second air inlet of four three-way magnetic valves connects, the public gas outlet of the 4th three-way magnetic valve and the second air inlet of mixing chamber
Mouth connection.
Preferably, the micro current stabilization module includes micro-sampling pump, micro flow stabilizing valve and flowmeter for small flow, it is described
The air inlet of micro-sampling pump is connect with the first gas outlet of third three-way magnetic valve, the micro-sampling pump, micro flow stabilizing valve
It is sequentially connected with flowmeter for small flow, the first air inlet of the gas outlet of the flowmeter for small flow and the 4th three-way magnetic valve connects
It connects.Micro current stabilization module can control gas flow in 0 ~ 1000ml/min.It is 10 ~ 1000 μ L that micro-sampling, which pumps range, and single is adopted
Sample amount can be down to 10 μ L.
Preferably, the magnanimity current stabilization module includes third air pump and mass flow controller, the third air pump
Air inlet is connect with the second gas outlet of third three-way magnetic valve, the gas outlet of the third air pump and mass flow controller
Air inlet connection, the gas outlet of the mass flow controller is connect with the second air inlet of the 4th three-way magnetic valve.Magnanimity is steady
Flow module can control gas flow in 1 ~ 10 L/min, and third air pump range is 0.1 ~ 1L/min.
The standard hydrogen of high concentration reduces pressure outflow by pressure reducing valve in standard hydrogen source gas, by the second threeway electromagnetism
Valve enters third three-way magnetic valve, if the concentration prepared is lower than the standard hydrogen of 100ppm, control device control the three or three
The public air inlet of three-way electromagnetic valve, the connection of the first gas outlet, the first air inlet of the 4th three-way magnetic valve of control, public gas outlet
Connection, high concentration hydrogen enter micro current stabilization module by third three-way magnetic valve, take micro-scale volume by micro-sampling pumping
Standard hydrogen, and accurately control volume by micro flow stabilizing valve and flowmeter for small flow, then the of the first three-way magnetic valve
Two gas outlets, the connection of public air inlet, air sequentially enter dirt catcher, dehydrogenation device, the first air pump, flowmeter, the first threeway
Solenoid valve, the second three-way magnetic valve, third three-way magnetic valve, micro current stabilization module, the 4th three-way magnetic valve, by micro current stabilization mould
Normal concentration hydrogen in block is loaded into mixing chamber；
If the concentration prepared is higher than 100ppm, control device controls the public air inlet of third three-way magnetic valve, second
Gas outlet connection, controls the second air inlet, the connection of public gas outlet of the 4th three-way magnetic valve, and high concentration hydrogen passes through the three or three
Three-way electromagnetic valve enters magnanimity current stabilization module, by third air pump draw standard hydrogen, controls and extracts by mass flow controller
Volume, then the second gas outlet of the first three-way magnetic valve, the connection of public air inlet, air sequentially enters dirt catcher, dehydrogenation
Device, the first air pump, flowmeter, the first three-way magnetic valve, the second three-way magnetic valve, third three-way magnetic valve, magnanimity current stabilization mould
Normal concentration hydrogen in magnanimity current stabilization module is loaded into mixing chamber by block, the 4th three-way magnetic valve.
Preferably, the mixing chamber includes the fairing of cavity and setting in the cavity, the fairing is used for
The intracorporal gas of chamber will be filled with uniformly to be spread, gas concentration in mixing chamber is uniformly distributed.Cavity be a volume 80 ~
The sealing cylinder cavity of 150L, containment portion has insulating layer, influenced by ambient temperature smaller.Cavity upper cover and column distribution 4 into
3 gas outlets of port.
Preferably, the detection output module includes second solenoid valve, the one or six logical current divider, the two or six reduction of fractions to a common denominator stream
Device, third solenoid valve and five current stabilization modules, the air inlet of the second solenoid valve and the second gas outlet of mixing chamber connect, institute
The gas outlet for stating second solenoid valve is connect with the public air inlet of the one or six logical current divider, and five of the one or the six logical current divider
Gas outlet is connect with the air inlet of five current stabilization modules respectively, and the gas outlet of five current stabilization modules is detected with five respectively
Hydrogen meter air inlet connection, the gas outlet of five detected hydrogen meters five with the two or six logical current divider respectively
Air inlet connection, the public gas outlet of the two or the six logical current divider and the third air inlet of mixing chamber connect.
Preferably, the current stabilization module includes surge tank and flow regulator, the air inlet of the surge tank and first
The gas outlet of six logical current dividers connects, and the gas outlet of the surge tank and the air inlet of flow regulator connect, the flow tune
The gas outlet for saving device is connect with the air inlet of detected hydrogen meter.
Detection output module is used to provide the gas source of steady hydrogen concentration after mixing for detected hydrogen meter.Detection output
Module and mixing chamber form a gas flow loop, i.e. detected hydrogen meter acquires gas out of mixing chamber, and by exhaust gas, tail gas
It drains into mixing chamber, can guarantee the air pressure balance in mixing chamber in this way, while keeping the gas concentration in mixing chamber relatively stable,
It can take multiple measurements, systematic error is small, improves the gaseous safety of system.
Six logical current dividers are a pentagon cylinders, and top center is public port, and five ports, port are opened in five sides respectively
It is connected for circular channel with top center public port, port diameter is 8 ~ 10mm.One or six logical current divider this one into five goes out
Current divider can guarantee that gas is consistent with volume by the time in each channel so that the detection of five detected hydrogen meters
Environment is consistent, improves the accuracy of system detection.
Surge tank is the container that a volume is 50ml, the gas outlet phase of buffer tank inlet and the one or six logical current divider
Even, the other end connects flow regulator, and flow regulator connect with the air inlet of a hydrogen meter, flow regulator is adjustable solar term
Body stability of flow is in 300 ~ 350ml/min.Surge tank avoids the formation of vortex shadow for alleviating impulse force of the air-flow in slype
Ring output concentration.Flow regulator can auto-adjustment control gas flow velocity, provide identical flow for different instruments, guarantee
The gas volume that each instrument is extracted in measurement is consistent, improves the detection accuracy of system.
Preferably, a kind of hydrogen meter detection device further includes environmental parameter detection module, the environmental parameter
Detection module includes intracavitary detection module and detection module outside the chamber that mixing cavity outer wall is arranged in, the institute that mixing cavity wall is arranged in
Stating intracavitary detection module includes the first temperature sensor, the first baroceptor and the first humidity sensor, is detected outside the chamber
Module includes second temperature sensor, the second baroceptor and the second humidity sensor, and the control device receives environment ginseng
The data of number detection module output.
Intracavitary detection module is used to detect temperature, air pressure, the humidity inside mixing chamber, and the outer detection module of chamber is mixed for detecting
Temperature, air pressure, humidity outside conjunction chamber.It is dense in module that the monitoring of mixing chamber internal and external environment parameter not only may determine that standard gas is prepared
A possibility that spending anomalous variation, also may determine that hydrogen meter is influenced size by environmental parameter.
Preferably, the air inlet of the standard detection instrument and the third gas outlet of mixing chamber connect, the standard inspection
4th air inlet of the gas outlet and mixing chamber of surveying instrument connects.Standard detection instrument is a kind of based on nanometer hydrogen sensitive film sensing
The quick response hydrogen meter of device.Standard detection instrument has wider range, can detect 0 ~ 5000ppm, and sensitivity is higher reachable
5ppb, while the detection cycle of sensor is shorter, less than 1 minute, convenient for the concentration variation in real-time monitoring mixing chamber.
Preferably, the control device includes that central processing unit, human-computer interaction module, channel control module and data are adopted
Collect memory module, the central processing unit is electric with human-computer interaction module, channel control module and data acquisition memory module respectively
Connection, the channel control module are also electric with inventiona gas treatment module, hydrogen output module, mixing chamber, detection output module respectively
Connection, data acquisition memory module also respectively with standard detection instrument, detected hydrogen meter, environmental parameter detection module
Electrical connection.
Central processing unit is the core of control device, for handling the order sent in human-computer interaction module, and to channel
Control module, data acquisition memory module send instruction, while receiving the data of data acquisition memory module, are transmitted by analysis
It is shown to human-computer interaction module.Channel control module for control inventiona gas treatment module, hydrogen output module, mixing chamber,
Output module work is detected, such as: the unlatching of the first ~ the 4th three-way magnetic valve of control and direction, control first ~ third solenoid valve
Open and close, control first ~ third air pump, micro-sampling pump start and stop, control micro flow stabilizing valve, mass flow controller and
The operating voltage of flow regulator controls its changes in flow rate in turn.Human-computer interaction module is for showing matching for setting concentration hydrogen
The measurement data of situation processed and hydrogen meter, while the lives such as standard gas preparation, measurement, stopping are sent to central processing unit by the module
It enables.Data acquisition memory module is used to acquire the data of standard detection instrument output, the data of detected hydrogen meter output, ring
The data of border parameter detection module output, are sent to central controller, while storing all data.Data acquire memory module
Using the embedded storage mode based on high-speed multiple channel parallel interface, storage real-time, quickly is realized by memory copy mode,
And storage agreement is simple, it is convenient to realize serial communication from different measuring instruments.
The beneficial effects of the utility model are: (1) can provide the hydrogen of various concentration for its detection for hydrogen meter, thus
Multiple spot Concentration Testing of the hydrogen meter in detection range ability is realized, convenient for accurately detecting the performance of hydrogen meter.(2) pass through standard
Concentration hydrogen and the certain density object gas of dehydrogenation air mixed preparing, with the quick sound based on nanometer hydrogen sensitive film sensor
It answers hydrogen meter as standard detection instrument, analyzes the concentration of mixed gas in real time, the accuracy of mixture strength can be improved.
(3) it is used by the analysis of magnanimity current stabilization module and micro current stabilization module, shortens the distribution time, the side surveyed by side mixing frontier inspection
The response time of system can be improved in method, reduces the loss of calibrating gas.(4) pass through the interior external monitor of environmental parameter, can be survey
The analysis of hydrogen instrument provides data, improves the reliability of detection device.(5) it is exported by multichannel, realizes the same of more hydrogen meters
Step observation guarantees the consistency of hydrogen meter acquisition gas concentration with flow control.(6) by the integrated control of control device, with
Parallel data transmission analyzes the foundation run as detection device, improves the automation and intelligentification degree of detection device, operates
Simplicity reduces manual operation error, improves the accuracy of detection.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is the gas circuit structure schematic diagram of embodiment；
Fig. 3 is the structural schematic diagram of control device.
In figure: 1, inventiona gas treatment module, 11, dirt catcher, 12, dehydrogenation device, the 131, first air pump, 14, flowmeter, 15,
First three-way magnetic valve, the 16, first solenoid valve, the 132, second air pump, 17, purification absorption plant, 2, hydrogen output module, 21,
Standard hydrogen source gas, 22, pressure reducing valve, 23, pressure gage, the 241, second three-way magnetic valve, 242, third three-way magnetic valve, 251, micro-
Amount sampling pump, 252, micro flow stabilizing valve, 253, flowmeter for small flow, 261, third air pump, 262, mass flow controller, 243,
4th three-way magnetic valve, 3, standard detection instrument, 4, detection output module, 411, second solenoid valve, the 421, the 1st reduction of fractions to a common denominator stream
Device, 431, surge tank, 432, flow regulator, the 422, the 2nd 6 logical current divider, 412, third solenoid valve, 5, mixing chamber, 51, chamber
Body, 52, fairing, 61, central processing unit, 62, channel control module, 63, human-computer interaction module, 64, data acquisition storage
Module, 7, environmental parameter detection module, 71, intracavitary detection module, 72, the outer detection module of chamber, 8, hydrogen meter.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment: a kind of hydrogen meter detection device of the present embodiment, as shown in Figure 1, Figure 2, Figure 3 shows, comprising:
Inventiona gas treatment module 1, as in diluent gas input mixing chamber 5 after the air dehydrogenation for that will suck；
Hydrogen output module 2, for inputting the hydrogen of normal concentration into mixing chamber 5；
Mixing chamber 5, the hydrogen that diluent gas and hydrogen output module 2 for accommodating the input of inventiona gas treatment module 1 input,
And it is sufficiently mixed diluent gas and hydrogen；
Standard detection instrument 3, for the density of hydrogen in real-time measurement mixing chamber 5；
Detect output module 4, for by the mixed gas delivery in mixing chamber 5 to be detected hydrogen meter 8；
Environmental parameter detection module 7, for detecting outside temperature, air pressure, humidity and the mixing chamber 5 inside mixing chamber 5
Temperature, air pressure, humidity；
Control device, for controlling inventiona gas treatment module 1, hydrogen output module 2, mixing chamber 4, standard detection instrument 3, inspection
Survey output module 4 works, and receives the data of the output of standard detection instrument 3, the data that environmental parameter detection module 7 exports, is detected
The data that the hydrogen meter 8 of survey exports.
Inventiona gas treatment module 1 includes dirt catcher 11, dehydrogenation device 12, the first air pump 131, the energization of flowmeter the 14, the 1st
Magnet valve 15, the first solenoid valve 16, the second air pump 132 and purification absorption plant 17, dirt catcher 11, dehydrogenation device 12, the first air pump
131, flowmeter 14, the first three-way magnetic valve 15 public air inlet be sequentially connected, the first outlet of the first three-way magnetic valve 15
Mouth is connect with the first air inlet of mixing chamber 5, the first gas outlet of mixing chamber 5, the first solenoid valve 16, the second air pump 132, purification
Absorption plant 17 is sequentially connected.
When preparing the hydrogen of setting concentration, the work of the first air pump is pumped into air, and air is filled by dirt catcher dedusting, dehydrogenation
After setting dehydrogenation, flowmeter metering, mixing chamber is inputted as diluent gas, flow by the first gas outlet of the first three-way magnetic valve
The continuous data of meter is sent to control device.When the gas in mixing chamber needs to be discharged, the work of the second air pump will be in mixing chamber
Gas extraction, the gas of extraction is expelled to air after purification absorption plant processing.
Dirt catcher uses aperture for 0.45 μm of miillpore filter, crosses the tiny dust particles in air filtering.Dehydrogenation device is
The trace hydrogen in air is converted to vapor using redox reaction, makes the density of hydrogen in air lower than 0.1ppm.
Dehydrogenation device is a miniature oxidation furnace, and furnace is provided with liner oxidation copper, and air inlet is connect with dirt catcher, gas outlet and the first gas
Pump connection, miniature oxidation furnace central temperature is up to 600 ~ 700 DEG C, and the trace hydrogen in air passes through dehydrogenation device, with copper oxide
Oxidation reaction occurs and generates vapor, the density of hydrogen in air is reduced to close to zero gas, is input to mixing chamber and matches as zero gas
Make the gas of various concentration.Purification absorption plant is one equipped with the activated carbon tube for carrying palladium particle, for absorbing the exhaust gas of discharge
Pollutant reduces the density of hydrogen in exhaust gas to 10ppm hereinafter, to prevent causing Environmental security hidden danger.
Hydrogen output module 2 include standard hydrogen source gas 21, pressure reducing valve 22, pressure gage 23, the second three-way magnetic valve 241,
Third three-way magnetic valve 242, micro current stabilization module, magnanimity current stabilization module, the 4th three-way magnetic valve 243, micro current stabilization module packet
Including micro-sampling pump 251, micro flow stabilizing valve 252 and flowmeter for small flow 253, magnanimity current stabilization module includes 261 He of third air pump
Mass flow controller 262, standard hydrogen source gas 21 pass sequentially through pressure reducing valve 22, pressure gage 23 and the second three-way magnetic valve 241
The first air inlet connection, the second gas outlet of the second air inlet of the second three-way magnetic valve 241 and the first three-way magnetic valve 15
Connection, the public gas outlet of the second three-way magnetic valve 251 are connect with the public air inlet of third three-way magnetic valve 242, and the three or three
First gas outlet of three-way electromagnetic valve 242 is connect with the air inlet of micro-sampling pump 251, and micro-sampling pumps 251, micro flow stabilizing valve
252 and flowmeter for small flow 253 be sequentially connected, the first of the gas outlet of flowmeter for small flow 253 and the 4th three-way magnetic valve 243
Air inlet connection, the second gas outlet of third three-way magnetic valve 242 are connect with the air inlet of third air pump 261, third air pump 261
Gas outlet connect with the air inlet of mass flow controller 262, the gas outlet of mass flow controller 262 with the four or three be powered
Second air inlet of magnet valve 243 connects, and the public gas outlet of the 4th three-way magnetic valve 243 and the second air inlet of mixing chamber 5 connect
It connects.
Micro current stabilization module can control gas flow in 0 ~ 1000ml/min.It is 10 ~ 1000 μ L that micro-sampling, which pumps range, single
Secondary sampling quantity can be down to 10 μ L.Magnanimity current stabilization module can control gas flow in 1 ~ 10 L/min, and third air pump range is 0.1 ~
1L/min。
The standard hydrogen of high concentration reduces pressure outflow by pressure reducing valve in standard hydrogen source gas, by the second threeway electromagnetism
Valve enters third three-way magnetic valve, if the concentration prepared is lower than the standard hydrogen of 100ppm, control device control the three or three
The public air inlet of three-way electromagnetic valve, the connection of the first gas outlet, the first air inlet of the 4th three-way magnetic valve of control, public gas outlet
Connection, high concentration hydrogen enter micro current stabilization module by third three-way magnetic valve, take micro-scale volume by micro-sampling pumping
Standard hydrogen, and accurately control volume by micro flow stabilizing valve and flowmeter for small flow, then the of the first three-way magnetic valve
Two gas outlets, the connection of public air inlet, air sequentially enter dirt catcher, dehydrogenation device, the first air pump, flowmeter, the first threeway
Solenoid valve, the second three-way magnetic valve, third three-way magnetic valve, micro current stabilization module, the 4th three-way magnetic valve, by micro current stabilization mould
Normal concentration hydrogen in block is loaded into mixing chamber；
If the concentration prepared is higher than 100ppm, control device controls the public air inlet of third three-way magnetic valve, second
Gas outlet connection, controls the second air inlet, the connection of public gas outlet of the 4th three-way magnetic valve, and high concentration hydrogen passes through the three or three
Three-way electromagnetic valve enters magnanimity current stabilization module, by third air pump draw standard hydrogen, controls and extracts by mass flow controller
Volume, then the second gas outlet of the first three-way magnetic valve, the connection of public air inlet, air sequentially enters dirt catcher, dehydrogenation
Device, the first air pump, flowmeter, the first three-way magnetic valve, the second three-way magnetic valve, third three-way magnetic valve, magnanimity current stabilization mould
Normal concentration hydrogen in magnanimity current stabilization module is loaded into mixing chamber by block, the 4th three-way magnetic valve.
Mixing chamber 5 includes cavity 51 and the fairing 52 being arranged in cavity 51, and fairing 52 will be for that will be filled with chamber
Gas in body 51 is uniformly spread.Cavity is the sealing cylinder cavity of a 80 ~ 150L of volume, and containment portion has heat preservation
Layer is influenced by ambient temperature smaller.Fairing promotes gas concentration in mixing chamber to be uniformly distributed.Cavity upper cover and column distribution 4
3 gas outlets of a air inlet.
Detecting output module 4 includes second solenoid valve 411, the one or six logical current divider 421, the two or six logical current divider 422, the
Three solenoid valves 412 and five current stabilization modules, the air inlet of second solenoid valve 411 are connect with the second gas outlet of mixing chamber 5, and second
The gas outlet of solenoid valve 411 is connect with the public air inlet of the one or six logical current divider 421, and five of the one or six logical current divider 421
Gas outlet is connect with the air inlet of five current stabilization modules respectively, the gas outlet of five current stabilization modules respectively with five detected surveys
The air inlet of hydrogen instrument 8 connects, the gas outlet of five detected hydrogen meters 8 respectively with five of the two or six logical current divider 422 into
Port connection, the public gas outlet of the two or six logical current divider 422 is connect with the third air inlet of mixing chamber 5.Current stabilization module includes
Surge tank 431 and flow regulator 432, the air inlet of surge tank 431 are connect with the gas outlet of the one or six logical current divider 421, are delayed
The gas outlet for rushing tank 431 is connect with the air inlet of flow regulator 432, and the gas outlet of flow regulator 432 is detected with corresponding
Hydrogen meter 8 air inlet connection.
Detection output module is used to provide the gas source of steady hydrogen concentration after mixing for detected hydrogen meter.Detection output
Module and mixing chamber form a gas flow loop, i.e. detected hydrogen meter acquires gas out of mixing chamber, and by exhaust gas, tail gas
It drains into mixing chamber, can guarantee the air pressure balance in mixing chamber in this way, while the gas concentration in mixing chamber is relatively stable, it can
It takes multiple measurements, systematic error is small, improves the gaseous safety of system.
Six logical current dividers are a pentagon cylinders, and top center is public port, and five ports, port are opened in five sides respectively
It is connected for circular channel with top center public port, port diameter is 8 ~ 10mm.One or six logical current divider this one into five goes out
Current divider can guarantee that gas is consistent with volume by the time in each channel so that the detection of five detected hydrogen meters
Environment is consistent, improves the accuracy of system detection.
Surge tank is the container that a volume is 50ml, the gas outlet phase of buffer tank inlet and the one or six logical current divider
Even, the other end connects flow regulator, and flow regulator connect with the air inlet of a hydrogen meter, flow regulator is adjustable solar term
Body stability of flow is in 300 ~ 350ml/min.Surge tank avoids the formation of vortex shadow for alleviating impulse force of the air-flow in slype
Ring output concentration.Flow regulator can auto-adjustment control gas flow velocity, provide identical flow for different instruments, guarantee
The gas volume that each instrument is extracted in measurement is consistent, improves the detection accuracy of system.
Environmental parameter detection module 7 includes that the intracavitary detection module 71 of 5 inner wall of mixing chamber is arranged in and is arranged in mixing chamber 5
The outer detection module 72 of the chamber of outer wall, intracavitary detection module 71 include that the first temperature sensor, the first baroceptor and first are wet
Sensor is spent, the outer detection module 72 of chamber includes second temperature sensor, the second baroceptor and the second humidity sensor, control
Device receives the data that environmental parameter detection module 7 exports.
Intracavitary detection module is used to detect temperature, air pressure, the humidity inside mixing chamber, and the outer detection module of chamber is mixed for detecting
Temperature, air pressure, humidity outside conjunction chamber.It is dense in module that the monitoring of mixing chamber internal and external environment parameter not only may determine that standard gas is prepared
A possibility that spending anomalous variation, also may determine that hydrogen meter is influenced size by environmental parameter.
The air inlet of standard detection instrument 3 is connect with the third gas outlet of mixing chamber 5, the gas outlet of standard detection instrument 3
It is connect with the 4th air inlet of mixing chamber 5.Standard detection instrument is a kind of quick response based on nanometer hydrogen sensitive film sensor
Hydrogen meter.Standard detection instrument has wider range, can detect 0 ~ 5000ppm, and the higher reachable 5ppb of sensitivity is sensed simultaneously
The detection cycle of device was shorter, less than 1 minute.
Control device includes central processing unit 61, human-computer interaction module 63, channel control module 62 and data acquisition storage
Module 64, central processing unit 61 are electric with human-computer interaction module 63, channel control module 62 and data acquisition memory module 64 respectively
Connection, channel control module 62 also respectively with inventiona gas treatment module 1, hydrogen output module 2, mixing chamber 5, detection output module 4
Electrical connection, data acquire memory module 64 respectively with standard detection instrument 3, detected hydrogen meter 8, environmental parameter detection module
7 electrical connections.
Central processing unit is the core of control device, for handling the order sent in human-computer interaction module, and to channel
Control module, data acquisition memory module send instruction, while receiving the data of data acquisition memory module, are transmitted by analysis
It is shown to human-computer interaction module.Channel control module for control inventiona gas treatment module, hydrogen output module, mixing chamber,
Output module work is detected, such as: the unlatching of the first ~ the 4th three-way magnetic valve of control and direction, control first ~ third solenoid valve
Open and close, control first ~ third air pump, micro-sampling pump start and stop, control micro flow stabilizing valve, mass flow controller and
The operating voltage of flow regulator controls its changes in flow rate in turn.Human-computer interaction module is for showing matching for setting concentration hydrogen
The measurement data of situation processed and hydrogen meter, while the lives such as standard gas preparation, measurement, stopping are sent to central processing unit by the module
It enables.Data acquisition memory module is used to acquire the data of standard detection instrument output, the data of detected hydrogen meter output, ring
The data of border parameter detection module output, are sent to central controller, while storing all data.Data acquire memory module
Using the embedded storage mode based on high-speed multiple channel parallel interface, storage real-time, quickly is realized by memory copy mode,
And storage agreement is simple, it is convenient to realize serial communication from different measuring instruments.
In the present solution, control device receive staff input preparation setting concentration hydrogen instruction after, control
Hydrogen output module inputs normal concentration hydrogen into mixing chamber, while controlling inventiona gas treatment module and inputting dehydrogenation into mixing chamber
Air is sufficiently mixed normal concentration hydrogen and diluent gas as diluent gas dilution standard concentration hydrogen, mixing chamber, standard
Detecting instrument extracts the concentration value that gas is detected, and will test out of mixing chamber and is sent to control device, control device root
According to the output quantity of the concentration value adjustment control hydrogen output module, inventiona gas treatment module that detect, finally make the hydrogen in mixing chamber
Gas concentration reaches setting value, detects output module later for the mixed gas delivery in mixing chamber to detected hydrogen meter, quilt
The density of hydrogen that the hydrogen meter of detection will test is sent to control device, and control device is according to the testing number of detected hydrogen meter
It is judged that the performance of detected hydrogen meter.
Staff can detect according to the multiple density of hydrogen of detection measurement range selection of detected hydrogen meter, will select
Density of hydrogen be input to control device, it is and defeated by the hydrogen of control device control hydrogen meter detection device configuration respective concentration
The detection for giving detected hydrogen meter, the detection data for acquiring detected hydrogen meter judge that detected hydrogen meter is detecting
Performance in range ability, to realize multiple spot Concentration Testing of the hydrogen meter in detection range ability, whole process is automatically complete
At high degree of automation, mushing error are small, safe and reliable.
Claims (10)
1. a kind of hydrogen meter detection device characterized by comprising
Inventiona gas treatment module (1), as in diluent gas input mixing chamber (5) after the air dehydrogenation for that will suck；
Hydrogen output module (2), the hydrogen for the input normal concentration into mixing chamber (5)；
Mixing chamber (5), for accommodating the diluent gas of inventiona gas treatment module (1) input and the hydrogen of hydrogen output module (2) input
Gas, and it is sufficiently mixed diluent gas and hydrogen；
Standard detection instrument (3), for the density of hydrogen in real-time measurement mixing chamber (5)；
It detects output module (4), is used for the mixed gas delivery in mixing chamber (5) to detected hydrogen meter (8)；
Control device, for controlling inventiona gas treatment module (1), hydrogen output module (2), mixing chamber (5), standard detection instrument
(3), detection output module (4) work receives the data of standard detection instrument (3) output, detected hydrogen meter (8) exports
Data.
2. a kind of hydrogen meter detection device according to claim 1, which is characterized in that inventiona gas treatment module (1) packet
Include dirt catcher (11), dehydrogenation device (12), the first air pump (131), flowmeter (14), the first three-way magnetic valve (15), the first electricity
Magnet valve (16), the second air pump (132) and purification absorption plant (17), the dust filtration device (11), dehydrogenation device (12), the first air pump
(131), flowmeter (14), the first three-way magnetic valve (15) public air inlet be sequentially connected, first three-way magnetic valve
(15) the first gas outlet is connect with the first air inlet of mixing chamber (5), the first gas outlet of the mixing chamber (5), the first electricity
Magnet valve (16), the second air pump (132), purification absorption plant (17) are sequentially connected.
3. a kind of hydrogen meter detection device according to claim 2, which is characterized in that hydrogen output module (2) packet
Include standard hydrogen source gas (21), pressure reducing valve (22), pressure gage (23), the second three-way magnetic valve (241), third three-way magnetic valve
(242), micro current stabilization module, magnanimity current stabilization module, the 4th three-way magnetic valve (243), the standard hydrogen source gas (21) is successively
It is connect by pressure reducing valve (22), pressure gage (23) with the first air inlet of the second three-way magnetic valve (241), the described 2nd 3 is powered
Second air inlet of magnet valve (241) is connect with the second gas outlet of the first three-way magnetic valve (15), second three-way magnetic valve
(241) public gas outlet is connect with the public air inlet of third three-way magnetic valve (242), the third three-way magnetic valve
(242) the first gas outlet is connect by micro current stabilization module with the first air inlet of the 4th three-way magnetic valve (243), and described
Second gas outlet of three three-way magnetic valves (242) passes through the second air inlet of magnanimity current stabilization module and the 4th three-way magnetic valve (243)
Mouth connection, the public gas outlet of the 4th three-way magnetic valve (243) is connect with the second air inlet of mixing chamber (5).
4. a kind of hydrogen meter detection device according to claim 3, which is characterized in that the micro current stabilization module includes micro-
Measure sampling pump (251), micro flow stabilizing valve (252) and flowmeter for small flow (253), the air inlet of the micro-sampling pump (251)
It is connect with the first gas outlet of third three-way magnetic valve (242), micro-sampling pump (251), micro flow stabilizing valve (252) and small
Flow flowmeter (253) meter is sequentially connected, the gas outlet of the flowmeter for small flow (253) and the 4th three-way magnetic valve (243)
The first air inlet connection.
5. a kind of hydrogen meter detection device according to claim 3, which is characterized in that the magnanimity current stabilization module includes the
Three air pumps (261) and mass flow controller (262), the air inlet and third three-way magnetic valve of the third air pump (261)
(242) the second gas outlet connection, the gas outlet of the third air pump (261) and the air inlet of mass flow controller (262)
Connection, the gas outlet of the mass flow controller (262) is connect with the second air inlet of the 4th three-way magnetic valve (243).
6. a kind of hydrogen meter detection device according to claim 1, which is characterized in that the mixing chamber (5) includes cavity
(51) and fairing (52) in cavity (51) is set, the fairing (52) is used for the gas that will be filled in cavity (51)
Body is uniformly spread.
7. a kind of hydrogen meter detection device according to claim 1, which is characterized in that detection output module (4) packet
Include second solenoid valve (411), the one or six logical current divider (421), the two or six logical current divider (422), third solenoid valve (412) and five
The air inlet of a current stabilization module, the second solenoid valve (411) is connect with the second gas outlet of mixing chamber (5), second electricity
The gas outlet of magnet valve (411) is connect with the public air inlet of the one or six logical current divider (421), the one or the six logical current divider
(421) five gas outlets are connect with the air inlet of five current stabilization modules respectively, the gas outlet difference of five current stabilization modules
It is connect with the air inlet of five detected hydrogen meters (8), the gas outlet of described five detected hydrogen meters (8) is respectively with
Five air inlets of two or six logical current dividers (422) connect, the public gas outlet of the two or the six logical current divider (422) and mixing chamber
(5) third air inlet connection.
8. a kind of hydrogen meter detection device according to claim 7, which is characterized in that the current stabilization module includes surge tank
(431) and flow regulator (432), the gas outlet of the air inlet of the surge tank (431) and the one or six logical current divider (421) connects
It connects, the gas outlet of the surge tank (431) is connect with the air inlet of flow regulator (432), the flow regulator (432)
Gas outlet is connect with the air inlet of detected hydrogen meter (8).
9. a kind of hydrogen meter detection device according to claim 1, which is characterized in that further include environmental parameter detection module
(7), the environmental parameter detection module (7) includes that setting exists in the intracavitary detection module (71) of mixing chamber (5) inner wall and setting
The outer detection module (72) of the chamber of mixing chamber (5) outer wall, the intracavitary detection module (71) include the first temperature sensor, the first gas
Pressure sensor and the first humidity sensor, the outer detection module (72) of the chamber includes second temperature sensor, the second air pressure sensing
Device and the second humidity sensor, the control device receive the data of environmental parameter detection module (7) output.
10. a kind of hydrogen meter detection device according to claim 1, which is characterized in that the standard detection instrument (3)
Air inlet is connect with the third gas outlet of mixing chamber (5), and the of the gas outlet of the standard detection instrument (3) and mixing chamber (5)
The connection of four air inlets.
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| CN201920165672.6U CN209589978U (en) | 2019-01-30 | 2019-01-30 | A kind of hydrogen meter detection device |
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|---|---|---|---|
| CN201920165672.6U CN209589978U (en) | 2019-01-30 | 2019-01-30 | A kind of hydrogen meter detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579168A (en) * | 2019-12-24 | 2020-08-25 | 杭州超钜科技有限公司 | Multi-probe automatic leak detection system and leak detection method |
| CN112649462A (en) * | 2020-12-25 | 2021-04-13 | 上海布尔自动化控制有限公司 | High-purity hydrogen energy detection system |
-
2019
- 2019-01-30 CN CN201920165672.6U patent/CN209589978U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579168A (en) * | 2019-12-24 | 2020-08-25 | 杭州超钜科技有限公司 | Multi-probe automatic leak detection system and leak detection method |
| CN111579168B (en) * | 2019-12-24 | 2022-07-29 | 杭州超钜科技有限公司 | Multi-probe automatic leak detection system and leak detection method |
| CN112649462A (en) * | 2020-12-25 | 2021-04-13 | 上海布尔自动化控制有限公司 | High-purity hydrogen energy detection system |
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