CN208872720U - A kind of gas on-line calibration device - Google Patents
A kind of gas on-line calibration device Download PDFInfo
- Publication number
- CN208872720U CN208872720U CN201820627391.3U CN201820627391U CN208872720U CN 208872720 U CN208872720 U CN 208872720U CN 201820627391 U CN201820627391 U CN 201820627391U CN 208872720 U CN208872720 U CN 208872720U
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- valve
- gas
- calibration device
- line calibration
- controller
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Abstract
A kind of gas on-line calibration device.It is made of gas path module (including standard gas steel cylinder, pressure reducing valve, electromagnet cut off valve, needle-valve, more mouthfuls of selector valves and its connecting line) and control module (including controller, communication module).Under control module control, gas path module drives gas standard gas to carry out on-line calibration to outfield Dan multichannel continuous monitor device (sensor).This calibrating installation structure letter, precision is high, automates, is at low cost.
Description
Technical field
The utility model relates to a kind of gas on-line calibration devices, especially suitable for stabilizing gas continuous monitor device or biography
The on-line calibration of sensor.
Background technique
It is required to continuously monitor the object gas progress gridding in atmosphere in environmental protection and climate change field.These mesh
The general concentration of standard gas body is lower, much belongs to trace rank, needs instrument and calibrating installation of good performance to its accurate measurements.
Offline mode is generally used to the calibration of outfield monitoring instrument (or sensor) at present, i.e., periodically sends monitoring instrument back to laboratory
Calibration returns again to monitoring place later and uses, and a few cases carry calibrating installation using lab assistant and periodically arrive live progress
The mode of calibration.The shortcomings that this two ways is: 1) calibrating installation itself is more complex, and portability is poor；2) operating process is complicated,
Generally require special messenger's progress；3) high calibration density not can guarantee generally, influence the accuracy of monitoring instrument measured value；4) monitor
Measurement accuracy reduction or equipment damage caused by device is possible to during transportation because of factors such as vibrations；5) at high cost.
Patent CN 204359768U discloses a kind of methane transducer calibration equipment, and it is highly concentrated which may be implemented coal mine
The normal calibration of methane gas is spent, disadvantage is: 1) can only once calibrate single channel gas；It 2) can only manual calibration；3) it is used only
Simple pressure and flow regulating part, are not used less leakage rate shut-off valve, therefore cannot achieve the calibration to trace gas.
Innovative point: this calibrating installation structure is simple, and only key link uses automation component, is reducing the same of construction cost
When realize on-line calibration function；The shut-off valve that leak rate is extremely low has been used, it can be achieved that calibration to trace gas；More mouthfuls are used
Selector valve is, it can be achieved that time the automatic calibration (on-line calibration) to multipath gas.
Summary of the invention
In order to plug a gap, the utility model provides a kind of gas on-line calibration device.System includes standard gas steel cylinder 1
A, pressure reducing valve 1, electromagnet cut off valve 1,1, more mouthfuls selector valves 1 of needle-valve, controller 1, communication module 1, each gas
Road part is connected with 6mm with 3mm inches of stainless steel tubes, and connection relationship is as shown in the figure.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
Steel cylinder gas is by after pressure reducing valve is decompressed to subsequent each component and equipment all allows pressure (< 0.2MPa), into electromagnetism
Shut-off valve.When electromagnet cut off valve (it is the on-off for controlling standard gas air-flow that it, which is acted on, is normally close valve) is opened, air-flow enters shut-off valve
Needle-valve afterwards.The effect of needle-valve is fine-tuned to gas flow, and the gas that flow is met the requirements enters subsequent more mouthfuls
Selector valve.Electromagnet cut off valve and more mouthfuls of selector valves realize the on-line calibration to single channel or multipath gas under the control of the controller.
Electromagnet cut off valve requires leak rate extremely low, in case the gaseous contamination ambient enviroment of its leakage, causes measured value to be distorted.
The beneficial effects of the utility model are: solving more gas circuits to outfield gas monitoring instrument device (or sensor), height
Precision, the calibration problem of automation and low cost.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Attached drawing is the structure principle chart of gas on-line calibration device, is respectively as follows: 1, standard gas steel cylinder, 2, pressure reducing valve, 3, electromagnetism
Shut-off valve, 4, needle-valve, 5, more mouthfuls of selector valves, 6, controller, 7, communication modules.
Specific embodiment
Calibrating installation is by standard gas steel cylinder 1, pressure reducing valve 2, electromagnet cut off valve 3, needle-valve 4, more mouthfuls of selector valves 5, controller 6, logical
Believe that 7 seven part of module is constituted.First five part is bonded gas path module, and rear two parts are bonded control module.Specific implementation
Mode is:
High pressure standard gas (general 1-15MPa) from standard gas steel cylinder 1 through pressure reducing valve 2 (pressure reducing valve 2 can be one-level pressure relief valve,
Can be second depressurized valve) it is decompressed within 0.2Mpa, into pressure reducing valve 2, into the pipeline between electromagnet cut off valve 3, (6mm is not
Become rusty steel pipe).Electromagnet cut off valve 3 is normally close valve (its leak rate is lower than 0.3atm/), and standard gas can enter electromagnet cut off valve when activated
3 subsequent pipelines (3mm stainless steel tube).After the needle-valve 4 (adjusting range 0-500ml/min) through the good flow of manual preset
Enter more mouthfuls of selector valves 5 through 3mm stainless steel tube again after control.More mouthfuls of selector valves 5 according to demand to Multi-channel monitoring instrument (or sensing
Device) secondary the calibration.
Electromagnet cut off valve 3 and more mouthfuls of selector valves 5 are controlled by controller 6, and (the control core element of controller 6 can be
The time relay, single-chip microcontroller or programmable controller).The control program of controller 6 can be set according to specific calibration requirements,
Or interacted and communicated with instrument host by communication module 7, it is set in the form of receiving instrument presets calibration command.It is logical
Believe that module 7 also has short message sending function, periodically sends the information such as instrument calibration state, prover time to monitor terminal, so as to
Administrative staff rush for scene in the state of calibrating exception or failure in time and repair.
Claims (8)
1. a kind of gas on-line calibration device, by standard gas steel cylinder (1), pressure reducing valve (2), electromagnet cut off valve (3), needle-valve (4), more mouthfuls
Selector valve (5), controller (6), (7) seven part of communication module are constituted, it is characterised in that standard gas steel cylinder (1), pressure reducing valve (2), electricity
Magnetic shut-off valve (3), needle-valve (4), more mouthfuls of selector valves (5) are sequentially connected the gas path module of component devices, controller (6) and communication mould
Block (7) composition control module.
2. a kind of gas on-line calibration device according to claim 1, which is characterized in that pressure reducing valve (2) to electromagnetism ends
The pipeline being connected between valve (3) is 6mm stainless steel tube, and the pipeline being connected between electromagnet cut off valve (3) at most mouth selector valve (5) is
3mm stainless steel tube.
3. a kind of gas on-line calibration device according to claim 1, which is characterized in that pressure reducing valve (2) is subtracted using level-one
Pressure valve or second depressurized valve, standard gas pressure is reduced within 0.2Mpa.
4. a kind of gas on-line calibration device according to claim 1, which is characterized in that electromagnet cut off valve (3) is normally closed
Valve, leak rate are lower than 0.3atm/.
5. a kind of gas on-line calibration device according to claim 1, which is characterized in that needle-valve (4) flow adjusting range
For 0-500ml/min.
6. a kind of gas on-line calibration device according to claim 1, which is characterized in that more mouthfuls of selector valves (5) can be to more
Road monitoring instrument or sensor carry out automatic calibration.
7. a kind of gas on-line calibration device according to claim 1, which is characterized in that electromagnet cut off valve (3) He Duokou
Selector valve (5) is controlled by controller (6), the control core element of controller (6) can be the time relay, single-chip microcontroller or
Programmable controller.
8. a kind of gas on-line calibration device according to claim 1, which is characterized in that communication module (7) has short message
Sending function periodically sends instrument calibration state and prover time to monitor terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820627391.3U CN208872720U (en) | 2018-04-28 | 2018-04-28 | A kind of gas on-line calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820627391.3U CN208872720U (en) | 2018-04-28 | 2018-04-28 | A kind of gas on-line calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208872720U true CN208872720U (en) | 2019-05-17 |
Family
ID=66461361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820627391.3U Expired - Fee Related CN208872720U (en) | 2018-04-28 | 2018-04-28 | A kind of gas on-line calibration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208872720U (en) |
-
2018
- 2018-04-28 CN CN201820627391.3U patent/CN208872720U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Sun Wanqi Document name: payment instructions |
|
| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190517 Termination date: 20200428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |