CN107402194A - A kind of generation device and production method of high-speed pulse source of the gas - Google Patents

A kind of generation device and production method of high-speed pulse source of the gas Download PDF

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Publication number
CN107402194A
CN107402194A CN201710673362.0A CN201710673362A CN107402194A CN 107402194 A CN107402194 A CN 107402194A CN 201710673362 A CN201710673362 A CN 201710673362A CN 107402194 A CN107402194 A CN 107402194A
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China
Prior art keywords
gas
electromagnetic valve
pond
speed electromagnetic
speed
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CN201710673362.0A
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董晓舟
许关征
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Shandong University
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Shandong University
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Priority to CN201710673362.0A priority Critical patent/CN107402194A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/39Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/39Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
    • G01N2021/396Type of laser source
    • G01N2021/399Diode laser

Abstract

The invention discloses a kind of generation device and production method of high-speed pulse source of the gas, described device includes gas cylinder, first gas container, gas pond, second gas container and the vacuum diaphragm pump being sequentially communicated, wherein, the first high-speed electromagnetic valve is set on the pipeline between the gentle pond of first gas container;Second high-speed electromagnetic valve is set on the pipeline between gas pond and second gas container;First high-speed electromagnetic valve and the second high-speed electromagnetic valve are electrically connected to controller.After the gas of the first gas container caching predetermined amount of the present apparatus, gas pond and second gas container are extracted into vacuum, open the first high-speed electromagnetic valve, the gas in first gas container rapidly diffuses into the gas pond of vacuum, produces the rising edge of high-speed pulse source of the gas;After prefixed time interval, the second high-speed electromagnetic valve is opened, the gas in gas pond rapidly diffuses into the second gas container of vacuum, produces the trailing edge of high-speed pulse source of the gas.High-speed pulse source of the gas caused by the present apparatus, it can accurately examine the sensitivity of gas detecting instrument.

Description

A kind of generation device and production method of high-speed pulse source of the gas
Technical field
The present invention relates to the generation technology field of pulse source of the gas, more particularly to a kind of generation device of high-speed pulse source of the gas and Production method.
Background technology
Gas detecting instrument, it is a kind of instrument and meter instrument of gas leakage Concentration Testing, it is applied to explosion-proof, gas and leaked Speedily carry out rescue work, the place such as underground piping or mine.The sensitivity of gas detecting instrument is very important technical parameter, directly affects it Performance is good and bad, and the reaction speed of gas detecting instrument is faster, and sensitivity is higher, and performance is better.
At present, conventional gas detecting instrument is made using tunable diode laser absorption spectroscopy techniques, has Gao Ling Sensitivity, high selectivity and the features such as quickly measure.The technology is to utilize laser diode wave length scan characteristic, obtains tested gas Absorption spectrum in the range of characteristic absorption spectrum, so as to carry out qualitative or quantitative analysis to tested gas.Above-mentioned this gas Body detector carries out sensitivity technique usually using pulse source of the gas.Conventional pulse air source generating device includes passing through pipeline connection The gentle pond of gas cylinder, wherein, the transparent setting in the relative both sides in gas pond.The laser that the laser of gas detecting instrument is sent can run through Gas pond transparent region.When carrying out sensitivity technique, the control valve of gas cylinder is opened, the gas in gas cylinder is passed through in gas pond, is preset Closing control valve after time interval, so as to produce the pulse source of the gas of a cycle.Pass through the pulse source of the gas of this cycle, detection The sensitivity of gas detecting instrument.Cycle shorter pulse source of the gas detected by gas detecting instrument, then the sensitivity of gas detecting instrument It is higher.
But in above-mentioned pulse air source generating device, in gas cylinder gas diffusion to the process in gas pond for the pulse source of the gas Rising edge, the process after closing control valve are the trailing edge of the pulse source of the gas, and the process of rising edge and trailing edge is longer, causes to produce The cycle of raw pulse source of the gas is long, when examining the sensitivity of gas detecting instrument using cycle longer pulse source of the gas, obtains Sensitivity results it is inaccurate.
The content of the invention
The invention provides a kind of generation device and production method of high-speed pulse source of the gas, to solve to exist in the prior art The problem of.
In a first aspect, the invention provides a kind of generation device of high-speed pulse source of the gas, described device includes being sequentially communicated Gas cylinder, first gas container, gas pond, second gas container and vacuum diaphragm pump, wherein,
The first high-speed electromagnetic valve is provided with pipeline between the gentle pond of first gas container;
The second high-speed electromagnetic valve is provided with pipeline between the gas pond and second gas container;
First high-speed electromagnetic valve and the second high-speed electromagnetic valve are electrically connected to controller.
Preferably, the controller includes ARM control panels, and the ARM control panels are used for output control level, described in control First high-speed electromagnetic valve and the second high-speed electromagnetic valve cut-off.
Preferably, the volume of the first gas container and second gas container is all higher than the volume in the gas pond.
Preferably, the first gas container and second gas container respectively set the control that a control gas flows in and out Valve.
Preferably, the outlet side of the gas cylinder is provided with pressure-reducing valve, and the pressure-reducing valve and control valve include the Three high-speed electromagnetic valves, the 3rd high-speed electromagnetic valve electrically connect with the controller.
Preferably, described device also includes being arranged on pressure transmitter inside the gas pond, the pressure transmitter with The controller electrical connection.
Preferably, the first gas container and second gas container include normal pressure gas cylinder.
Preferably, the energization reaction time of first high-speed electromagnetic valve and the second high-speed electromagnetic valve is 0.5ms, powered off instead It is 0.2ms between seasonable.
Second aspect, present invention also offers a kind of production method of high-speed pulse source of the gas, applied to any of the above-described described Device, methods described includes:
The first high-speed electromagnetic valve is closed in control, opens gas cylinder, and the gas of predetermined amount is passed through the first gas in gas cylinder After body container, the gas cylinder is closed;
The second high-speed electromagnetic valve is opened in control, opens vacuum diaphragm pump and the gentle pond of second gas container is vacuumized, treat institute When stating the gentle pond of second gas container and reaching predetermined vacuum and spend, the vacuum diaphragm pump is closed;
Control closes second high-speed electromagnetic valve, opens first high-speed electromagnetic valve successively, obtains high-speed pulse gas Source rising edge;
After prefixed time interval, control successively closes the first high-speed electromagnetic valve, opens second high-speed electromagnetic valve, obtains The high-speed pulse source of the gas trailing edge.
Technical scheme provided by the invention can include the following benefits:
The first high speed electromagnetic is closed in the generation device of high-speed pulse source of the gas provided in an embodiment of the present invention, controller control Valve, gas cylinder is opened, after being passed through the gas of predetermined amount to first gas container, close gas cylinder;Then controller controls The second high-speed electromagnetic valve is opened, vacuum is extracted to second gas container, gas pond using vacuum diaphragm pump, makes gas pond and second gas Container is in vacuum state before high-speed pulse source of the gas is obtained;Close vacuum diaphragm pump after, close successively the second high-speed electromagnetic valve, The first high-speed electromagnetic valve is opened, the gas in first gas container is rapidly diffused into the gas pond of vacuum;Prefixed time interval Afterwards, controller controls successively closes the first high-speed electromagnetic valve, opens the second high-speed electromagnetic valve, rapidly diffuses into gas in gas pond In the second gas container of vacuum, the high-speed pulse source of the gas of a pulse is produced in whole process in gas pond.The present invention is implemented The generation device of high-speed pulse source of the gas provided in example, by the use of first gas container and second gas container as intermediary, first After the gas of gas container caching predetermined amount, its pressure is atmospheric pressure state, and gas pond and second gas container are extracted into vacuum, due to The pressure of first gas container is more than the pressure in gas pond, after opening the first high-speed electromagnetic valve, the gas that is cached in first gas container Body is rapidly diffused into the gas pond of vacuum, so as to produce the rising edge of high-speed pulse source of the gas in gas pond;After prefixed time interval, The second high-speed electromagnetic valve is opened, because the pressure in gas pond is much larger than the pressure in the second gas container of vacuum, in gas pond Gas is rapidly diffused into the second gas container of vacuum, so as to produce the trailing edge of high-speed pulse source of the gas in gas pond.Entirely Process rising edge and trailing edge, all it is the diffusion process from normal pressure to vacuum, diffusion is rapid, during only several milliseconds of response Between, therefore, the rising edge and trailing edge of high-speed pulse source of the gas are more precipitous, and cycle of whole high-speed pulse source of the gas is approximately equal to pre- If time interval, the time is shorter, can accurately examine the sensitivity of gas detecting instrument.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, not Can the limitation present invention.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, letter will be made to the required accompanying drawing used in embodiment below Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor, Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of the generation device of high-speed pulse source of the gas provided in an embodiment of the present invention;
Fig. 2 is a kind of schematic flow sheet of the production method of high-speed pulse source of the gas provided in an embodiment of the present invention;
Fig. 3 is a kind of oscillogram of high-speed pulse source of the gas provided in an embodiment of the present invention.
Embodiment
The generation device of a kind of high-speed pulse source of the gas provided in an embodiment of the present invention, for the sensitive of detection gas detector Degree, wherein, gas detecting instrument includes methane detector, carbon dioxide detector etc., below to detect methane detector sensitivity Exemplified by, the generation device of the high-speed pulse source of the gas in the description embodiment of the present invention.
The embodiment of the present invention provides a kind of generation device of high-speed pulse source of the gas, as shown in figure 1, described device is included successively Gas cylinder 1, first gas container 2, gas pond 4, second gas container 6 and the vacuum diaphragm pump 7 of connection, wherein,
When detecting the sensitivity of methane detector, the generation device of high-speed pulse source of the gas will provide pulse methane gas, high The internal reservoir of air bottle 1 has the methane gas of high pressure.
First gas container 2 is connected by pipeline with gas cylinder 1, when opening gas cylinder 1, in gas cylinder 1 Methane can spread in first gas container 2.In specific implementation process, the speed of the outlet of gas cylinder 1 is controlled for convenience, Pressure-reducing valve 13 can be set in the outlet side of gas cylinder 1.When opening pressure-reducing valve 13, the gas in gas cylinder 1 can expand It is scattered in first gas container 2, closing pressure-reducing valve 13, the gas in gas cylinder 1 stops spreading into second gas container 2.
Gas pond 4 is connected by pipeline with first gas container 2, and gas pond 4 is the place for producing high-speed pulse source of the gas, and methane is examined Instrument is surveyed to detect the high-speed pulse source of the gas in gas 4.In specific implementation process, gas pond 4 may be configured as cylindrical structural, Two bottom surfaces are respectively provided with transparent glasses lens, and side is steel material, and the laser of gas detecting instrument can wear the transparent of 4 liang of bottom surfaces of permeability pool Eyeglass, the concentration of the high speed pulse source of the gas of detection gas pond 4.Gas pond 4 is oppositely arranged gas access and gas vent, gas on side Entrance is connected by pipeline with first gas container 2, and gas vent is connected by pipeline with second gas container 6.
In embodiments of the present invention, the gas in first gas container 2 will be diffused into gas pond 4, first gas container 2 Volume can be much larger than the volume in gas pond 4.In specific implementation process, first gas container 2 can use normal pressure gas cylinder.Specifically , normal pressure gas cylinder of the volume for 4L can be used.
In a kind of possible embodiment, in order to prevent the gas in first gas container 2 with pipeline to external diffusion, first Gas container 2 is provided with the control valve that a control gas flows in and out.When use normal pressure gas cylinder is as first gas container 2 When, the outlet of normal pressure gas cylinder and entrance are a port, and a control valve is set on this port, can control gas in normal pressure gas cylinder Body flow in and out cut-off.
It is gentle in first gas container 2 in order to control what the gas between first gas container 2 and gas pond 4 circulated to cut-off The first high-speed electromagnetic valve 3 is provided with pipeline between pond 4, when opening the first high-speed electromagnetic valve 3, in first gas container 2 Gas can spread in gas pond 4;When closing the first high-speed electromagnetic valve 3, the gas in first gas container 2 stops to gas pond Spread in 4.
Second gas container 6 is connected by pipeline with gas pond 4, and the gas in gas pond 4 can spread second gas container 6 In.
In specific implementation process, in order to improve diffusion velocity, the volume of second gas container 6 can be much larger than gas pond 4 Container.
In specific implementation process, second gas container 6 can also use normal pressure gas cylinder.Specifically, volume can be used For 4L normal pressure gas cylinder.
In a kind of possible embodiment, in order to prevent the gas diffusion in pipeline into second gas container 6, the second gas Body container 6 is also equipped with the control valve that a control gas flows in and out.When use normal pressure gas cylinder is as second gas container 6 When, the outlet of normal pressure gas cylinder and entrance are a port, and a control valve is set on this port, can control gas in normal pressure gas cylinder Body flow in and out cut-off.
In order to whether control the circulation of gas before the gentle pond 4 of second gas container 6, in gas pond 4 and second gas container 6 Between pipeline on be provided with the second high-speed electromagnetic valve 5.
In specific implementation process, the first high-speed electromagnetic valve 3 and the second high-speed electromagnetic valve 5 are using the normally closed high speed electricity of threeway Magnet valve, its connection size are 3mm, be powered the reaction time be 0.5ms, power-off the reaction time be 0.2ms.Using the reaction time that is powered 0.5ms, power-off the reaction time be 0.2ms high-speed electromagnetic valve can beat rapidly 2 gentle pond 4 of opening/closing first gas container it Between connection, make gas diffusion into gas pond 4, or the rapid connection beaten between 6 gentle pond 4 of opening/closing second gas container, Make the gas diffusion in gas pond 4 into second gas container 6.
First high-speed electromagnetic valve 3 and the second high-speed electromagnetic valve 5 are electrically connected to controller 9, and controller 9 can be with output control Level, for controlling cut-offfing for the first high-speed electromagnetic valve 3 and the second high-speed electromagnetic valve 5.
In specific implementation process, controller 9 can be ARM control panels, ARM control panels respectively with the first high-speed electromagnetic valve 3rd, the second high-speed electromagnetic valve 5 electrically connects, and ARM control panels can be with output control level, so as to control the first high-speed electromagnetic valve 3 and Two high-speed electromagnetic valves 5 cut-off.The reaction time of first high-speed electromagnetic valve 3 and the second high-speed electromagnetic valve 5 is exceedingly fast, once ARM is controlled The control level of making sheet output changes, and the first high-speed electromagnetic valve 3 and the second high-speed electromagnetic valve 5 can react immediately.
When ARM control panels are to the first high-speed electromagnetic valve 3 output high level, the first high-speed electromagnetic valve 3 is opened, first gas Gas in container 2 can spread into gas pond 4, when ARM control panels are to the first high-speed electromagnetic valve 3 output low level, first High-speed electromagnetic valve 3 is closed, and the gas in first gas container 2 stops spreading to gas pond 4.
When ARM control panels are to the second high-speed electromagnetic valve 5 output high level, the second high-speed electromagnetic valve 5 is opened, in gas pond 4 Gas can be spread into second gas container 6, when ARM control panels to the second high-speed electromagnetic valve 5 output low level when, second High-speed electromagnetic valve 5 is closed, and the gas in gas pond 4 stops spreading into second gas container 6.
Vacuum diaphragm pump 7 connects with second gas container 6, and when opening vacuum diaphragm pump 7, vacuum diaphragm pump 7 can be right Second gas container 6 vacuumizes.If the second high-speed electromagnetic valve 5 is open mode, vacuum diaphragm pump can be to gas pond 4, the second gas Pipeline between body container 6 and gas pond 4 and second gas container 6 extracts vacuum.
In specific implementation process, vacuum diaphragm pump of the limiting pressure for 0.095MPa can be used, vacuum diaphragm pump 7 can So that the gentle pond 4 of second gas container 6 to be extracted into 0.095MPa vacuum.After predetermined vacuum degree is drawn into, it is true to close barrier film Empty pump 7.
After being vacuumized by vacuum diaphragm pump 7 to gas pond 4 and second gas container 6, because first gas container 2 is normal pressure State, and gas pond 4 is vacuum state, larger pressure difference between first gas container 2 and gas pond 4 be present, it is high when opening first During fast magnetic valve 3, the gas in first gas container 2 can spread rapidly to gas pond 4, so as to obtain the upper of high-speed pulse source of the gas Rise edge.After prefixed time interval, the first high-speed electromagnetic valve 3 is closed, now the pressure in gas pond 4 is close to atmospheric pressure state, with the second gas Larger pressure difference between body container 6 be present, open the second high-speed electromagnetic valve 5, the gas in gas pond 4 rapidly diffuses into the second gas In body container 6, so as to obtain the trailing edge of high-speed pulse source of the gas.
In a kind of possible embodiment, pressure-reducing valve 13, the control valve of first gas container 2 and second gas container 6 Control valve can use the 3rd high-speed electromagnetic valve, the 3rd high-speed electromagnetic valve electrically connects with controller 9.Pass through controller 9 The opening and closing of the high-speed electromagnetic valve of above three the 3rd is controlled respectively, avoids the control of manual control pressure-reducing valve 13, first gas container 2 Time delay caused by the control valve of valve and second gas container 6.3rd high-speed electromagnetic valve can also use threeway it is normally closed, And the high-speed electromagnetic valve that the reaction time that is powered is 0.5ms, the power-off reaction time is 0.2ms.
Described device also includes being arranged on the pressure transmitter 8 inside gas pond 4, and pressure transmitter 8 is electrically connected with controller 9 Connect.Pressure transmitter 8 can detect the gas pressure in gas pond 4, and export in the form of electric current to controller 9.
Described device also includes LCDs 10, and the electric current that pressure transmitter 8 exports is converted into accordingly by controller 9 Pressure value, by showing the pressure value in outlet pond on LCDs 10.
In a kind of possible embodiment, described device also includes data collecting card 11 and PC ends 12, data collecting card 11 Electrically connected with controller 9, PC ends 12 electrically connect with data collecting card 11.Wherein data collecting card 11 obtains for acquisition controller 9 The pressure value obtained, and pressure value is sent to PC ends 12, PC ends 12 are used to preserve pressure value.
Preferably, a three-in-one sensor is respectively provided with inside the first gas container and second gas container, three close One sensor is electrically connected with the controller.The three-in-one sensor is used to gather first gas container respectively and second gas is held Temperature, humidity and the pressure of device, the change of gas in first gas container and second gas container is monitored, is best understood from producing High-speed pulse source of the gas performance.
Preferably, described device also includes track, and gas pond is slidably connected with track, can be slided along track, in high rapid pulse During the generation in qi of chong channel ascending adversely source, control gas pond is slided, and tests the detectability of gas detecting instrument.
The first high speed electromagnetic is closed in the generation device of high-speed pulse source of the gas provided in an embodiment of the present invention, controller control Valve, gas cylinder is opened, after being passed through the gas of predetermined amount to first gas container, close gas cylinder;Then controller controls The second high-speed electromagnetic valve is opened, vacuum is extracted to second gas container, gas pond using vacuum diaphragm pump, makes gas pond and second gas Container is in vacuum state before high-speed pulse source of the gas is obtained;Close vacuum diaphragm pump after, close successively the second high-speed electromagnetic valve, The first high-speed electromagnetic valve is opened, the gas in first gas container is rapidly diffused into the gas pond of vacuum;Prefixed time interval Afterwards, controller controls successively closes the first high-speed electromagnetic valve, opens the second high-speed electromagnetic valve, rapidly diffuses into gas in gas pond In the second gas container of vacuum, the high-speed pulse source of the gas of a pulse is produced in whole process in gas pond.The embodiment of the present invention The generation device of the high-speed pulse source of the gas of middle offer, intermediary, the first gas are used as by the use of first gas container and second gas container After the gas of body container caching predetermined amount, its pressure be atmospheric pressure state, by gas pond and second gas container extraction vacuum, due to the The pressure of one gas container is more than the pressure in gas pond, after opening the first high-speed electromagnetic valve, the gas that is cached in first gas container In the gas pond for rapidly diffusing into vacuum, so as to produce the rising edge of high-speed pulse source of the gas in gas pond;After prefixed time interval, beat The second high-speed electromagnetic valve is opened, because the pressure in gas pond is much larger than the pressure in the second gas container of vacuum, the gas in gas pond Body is rapidly diffused into the second gas container of vacuum, so as to produce the trailing edge of high-speed pulse source of the gas in gas pond.Whole mistake Journey rising edge and trailing edge, all it is the diffusion process from normal pressure to vacuum, diffusion is rapid, only several milliseconds of response time, Therefore, the rising edge of high-speed pulse source of the gas and trailing edge are more precipitous, and cycle of whole high-speed pulse source of the gas is approximately equal to default Time interval, the time is shorter, can accurately examine the sensitivity of gas detecting instrument.
The embodiment of the present invention additionally provides a kind of production method of high-speed pulse source of the gas, applied to the height in above-described embodiment The generation device in rapid pulse qi of chong channel ascending adversely source.The production method of high-speed pulse source of the gas provided in an embodiment of the present invention, as shown in Fig. 2 including:
Step S100:The first high-speed electromagnetic valve is closed in control, opens gas cylinder, and the gas of predetermined amount leads in gas cylinder After entering first gas container, the gas cylinder is closed.
In embodiments of the present invention, controller gives the first high-speed electromagnetic valve output low level, and the first high speed electricity is closed in control Magnet valve, gas cylinder is opened, the gas of predetermined amount in gas cylinder is passed through in first gas container, makes first gas container not The only gas of predetermined amount, and it is in atmospheric pressure state.
In specific implementation process, opening for gas cylinder can be controlled by being arranged on the pressure-reducing valve of the gas cylinder port of export Close, after the gas of predetermined amount in gas cylinder is passed through first gas container, pressure-reducing valve is closed, in order to prevent the first high speed electromagnetic Valve air-tightness is bad to cause gas to leak, and can close the control valve of first gas container.
Step S200:The second high-speed electromagnetic valve is opened in control, opens vacuum diaphragm pump and the gentle pond of second gas container is taken out Vacuum, when the gentle pond of the second gas container reaches predetermined vacuum and spent, close the vacuum diaphragm pump.
In embodiments of the present invention, controller gives the second high-speed electromagnetic valve output high level, and the second high speed electricity is opened in control Magnet valve, open vacuum diaphragm pump and the pipeline after second gas container, gas pond and the first high-speed electromagnetic valve is evacuated. In specific implementation process, predetermined vacuum degree is reached after being evacuated about 2min, when arrival predetermined vacuum is spent, closes barrier film vacuum Pump, the pipeline after second gas container, gas pond and the first high-speed electromagnetic valve is set to keep predetermined vacuum degree state.
Step S300:Control closes second high-speed electromagnetic valve, opens first high-speed electromagnetic valve successively, obtains high Rapid pulse qi of chong channel ascending adversely source rising edge.
In embodiments of the present invention, the second high-speed electromagnetic valve is closed, gas expands during preventing the generation of high-speed pulse source of the gas It is scattered to the second high-speed electromagnetic valve, second gas container.The first high-speed electromagnetic valve is opened, makes the gas diffusion in first gas container To gas pond, because the pressure of first gas container is far above the pressure in gas pond, therefore, the gas of first gas container spreads rapidly To gas pond, so as to obtain high-speed pulse source of the gas rising edge.
In specific implementation process, before opening the first high-speed electromagnetic valve, the control valve of first gas container is opened, makes the One gas container with extraneous pipeline connection, when opening the first high-speed electromagnetic valve, the gas of first gas container is i.e. diffusible Into gas pond.
Step S400:After prefixed time interval, control successively closes the first high-speed electromagnetic valve, opens the second high speed electricity Magnet valve, obtain the high-speed pulse source of the gas trailing edge.
In specific implementation process, prefixed time interval can be 10s, i.e. after 10s, controller is to the first high-speed electromagnetic valve Low level is exported, the first high-speed electromagnetic valve is closed;Then controller exports high level to the second high-speed electromagnetic valve, and second is electric at a high speed Magnet valve is opened, because second gas volume of a container is much larger than the volume in gas pond, meanwhile, second gas container is vacuum state, Its internal pressure is much smaller than gas pond, and therefore, the gas in gas pond can be rapidly diffused into second gas container, high-speed pulse occur The trailing edge of source of the gas, so as to obtain the high-speed pulse source of the gas of a cycle.It is as shown in figure 3, high for one kind that example of the present invention provides The oscillogram in rapid pulse qi of chong channel ascending adversely source, its cycle are 10s.
, can at regular intervals when needing the high-speed pulse source of the gas in multiple cycles in a kind of possible embodiment, weight Multiple above-mentioned steps, so as to obtain the high-speed pulse source of the gas in multiple cycles in gas pond.
In this specification between each embodiment identical similar part mutually referring to.
Those skilled in the art will readily occur to the present invention its after considering specification and putting into practice the disclosure invented here Its embodiment.The application be intended to the present invention any modification, purposes or adaptations, these modifications, purposes or Person's adaptations follow the general principle of the present invention and including undocumented common knowledges in the art of the invention Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by following Claim is pointed out.
Invention described above embodiment is not intended to limit the scope of the present invention..

Claims (9)

1. a kind of generation device of high-speed pulse source of the gas, it is characterised in that gas cylinder that described device includes being sequentially communicated, the One gas container, gas pond, second gas container and vacuum diaphragm pump, wherein,
The first high-speed electromagnetic valve is provided with pipeline between the gentle pond of first gas container;
The second high-speed electromagnetic valve is provided with pipeline between the gas pond and second gas container;
First high-speed electromagnetic valve and the second high-speed electromagnetic valve are electrically connected to controller.
2. device as claimed in claim 1, it is characterised in that the controller includes ARM control panels, the ARM control panels For output control level, cut-offfing for first high-speed electromagnetic valve and the second high-speed electromagnetic valve is controlled.
3. device as claimed in claim 1, it is characterised in that the volume of the first gas container and second gas container is equal More than the volume in the gas pond.
4. device as claimed in claim 1, it is characterised in that the first gas container and second gas container respectively set one The control valve that control gas flows in and out.
5. device as claimed in claim 4, it is characterised in that the outlet side of the gas cylinder is provided with pressure-reducing valve, described Pressure-reducing valve and control valve include the 3rd high-speed electromagnetic valve, and the 3rd high-speed electromagnetic valve electrically connects with the controller.
6. device as claimed in claim 1, it is characterised in that described device also includes being arranged on the pressure inside the gas pond Transmitter, the pressure transmitter electrically connect with the controller.
7. device as claimed in claim 1, it is characterised in that the first gas container and second gas container include normal Air bottle.
8. device as claimed in claim 1, it is characterised in that first high-speed electromagnetic valve and the second high-speed electromagnetic valve lead to The electric reaction time be 0.5ms, power-off the reaction time be 0.2ms.
A kind of 9. production method of high-speed pulse source of the gas, applied to any described devices of claim 1-8, it is characterised in that Methods described includes:
The first high-speed electromagnetic valve is closed in control, opens gas cylinder, and the gas of predetermined amount is passed through first gas appearance in gas cylinder After device, the gas cylinder is closed;
The second high-speed electromagnetic valve is opened in control, opens vacuum diaphragm pump and the gentle pond of second gas container is vacuumized, treat described the When the gentle pond arrival predetermined vacuum of two gas containers is spent, the vacuum diaphragm pump is closed;
Control closes second high-speed electromagnetic valve, opens first high-speed electromagnetic valve successively, obtains on high-speed pulse source of the gas Rise edge;
After prefixed time interval, control successively closes the first high-speed electromagnetic valve, opens second high-speed electromagnetic valve, described in acquisition High-speed pulse source of the gas trailing edge.
CN201710673362.0A 2017-08-09 2017-08-09 A kind of generation device and production method of high-speed pulse source of the gas Pending CN107402194A (en)

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