CN105864634A - Portable nitrogen purging, leakage detection, vacuum pumping and inflation device and application method - Google Patents
Portable nitrogen purging, leakage detection, vacuum pumping and inflation device and application method Download PDFInfo
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- CN105864634A CN105864634A CN201610330692.5A CN201610330692A CN105864634A CN 105864634 A CN105864634 A CN 105864634A CN 201610330692 A CN201610330692 A CN 201610330692A CN 105864634 A CN105864634 A CN 105864634A
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- Prior art keywords
- nitrogen
- pressure
- control box
- leak detection
- evacuation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0119—Shape cylindrical with flat end-piece
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/03—Orientation
- F17C2201/035—Orientation with substantially horizontal main axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/056—Small (<1 m3)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/014—Nitrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0107—Single phase
- F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/043—Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/05—Applications for industrial use
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
A portable nitrogen purging, leakage detection, vacuum pumping and inflation device is characterized by comprising a nitrogen source, a pressure adjuster, a control box and plastic gas pipelines, all of which are sequentially connected, and the control box regulates and controls the whole set. The nitrogen source, the pressure adjuster, the control box and the two plastic gas pipelines are placed in a packaging box. During using, the nitrogen source and the pressure adjuster are connected with the control box. An upper path system of the control box is provided with a gas path interface I and a gas path interface II, wherein the gas path interface I is connected with an inflation valve through the corresponding plastic gas pipeline, and the gas path interface II is connected with a to-be-detected photoelectric device through the corresponding plastic gas pipeline. The control box is further provided with a digital pressure gauge, a three-position gas flow distribution valve, an intelligent vacuum pump, a power switch and power display lamps. The portable nitrogen purging, leakage detection, vacuum pumping and inflation device has the beneficial effects that a miniature, modular and flexible assembly manner is adopted, and multiple functions integrating purging, vacuum pumping, leakage detection and nitrogen inflation are achieved; and parts can be conveniently and flexibly replaced, and the performance of the whole set is changed and improved.
Description
Technical field
The present invention relates to the nitrogen purger of electrooptical device, be specifically related to a kind of portable nitrogen purging leak detection evacuation and fill
Gas equipment.
Background technology
Photoelectric instrument and device, see such as visible ray and take aim at shooting, lll night vision, infrared sight take aim at imaging and laser device etc., often
Use in the wild, the test of the adverse circumstances such as dust storm sleet to be stood.Generally these optoelectronic devices in use have gas
Body leakage and pollution dew phenomenon, cause image quality to decline, cause using error.It is made to be in works fine shape all the time
State is it is necessary to dust-proof, moistureproof, anti-condensation, high-voltage breakdown mould proof, anti-, rainproof, sand-proof, to ensure optical system
Image quality and electronic circuit steady operation so that it is can see clearly, look far.The effective care and maintenance measure currently taked,
It is nitrogen-filled seal and QI invigorating of periodically hunting leak.It is usually and uses two to three Nian Fan factories to safeguard, return the relatively costly of factory's maintenance, and
Delay the use time.If can at any time optoelectronic device be overhauled, systematic function can not only be maintained, and be conducive to extending
The service life of equipment.The maintenance of optoelectronic device needs equipment and personnel, not the having of normal conditions of specialty
Standby maintenance condition.
Small handcart type Nitrogen filling vehicle, skid-mounted type and the vehicle-mounted nitrogen Nitrogen filling vehicle processed currently used, will use big volume nitrogen cylinder to enter
Row nitrogen charging, does not has the nitrogen needed for maintenance process to purge, hunts leak, evacuation function.Front Nitrogen filling vehicle uses big industrial gas cylinder stupid
Weight, it is impossible to carry with, can only nitrogen charging, and the blowing pressure controls to be difficult to precisely, even can damage internal works；Other
Mode, as slow in direct nitrogen blowing method of replacing, charging purity and pressure are wayward, affect degree of drying and image quality,
And can only carry out in indoor.
Accurate photoelectricity high-tech product needs nitrogen filled protection and high air-tightness.Therefore, purge, hunt leak, evacuation and filling
Gas technology, a part indispensable during becoming its product manufacturing and using.Suit can not only reduce photoelectricity weapon dress
Time needed for standby maintenance and failture evacuation and cost, maintain systematic function, extends its service life, improves survival ability
With operation effectiveness, it is also possible to be effectively improved production process product quality and performances.
The present invention overcomes disadvantages mentioned above completely, and volume is little, lightweight, can carry with and scene dismounts, collection nitrogen purging,
Leak detection, evacuation and aerate one, safe and reliable.
Summary of the invention
For the problems referred to above, volume is little, lightweight, can carry with and scene dismounts, collection to it is an object of the invention to provide one
Nitrogen purging, leak detection, evacuation and aerate one equipment, handy to carry about, in the wild can be to photoelectricity during operation
Equipment carries out detection and nitrogen purging etc. in real time.
The present invention solves above-mentioned technical problem and be the technical scheme is that the purging leak detection evacuation inflation of a kind of portable nitrogen
Equipment, it is characterised in that: include source nitrogen, the pressure regulator being sequentially connected with, and regulate and control whole suit control box and
The plastics gas pipeline connected, described source nitrogen, pressure regulator, control box and some plastics gas pipelines are placed on
In packing crates, during use, source nitrogen, pressure regulator and control box are connected；
Described source nitrogen is provided with gas circuit hand control valve, is used for controlling the nitrogen flow from source nitrogen；
Described pressure regulator includes:
Pressure regulating handle: when nitrogen purges, is adjusted to atmospheric pressure state needed for equipment by the nitrogen flowing into control box；
High pressure gauge: the pressure of instruction nitrogen cylinder；
Low-pressure meter: the nitrogen pressure after instruction regulation；
Charge valve: two ends are respectively at source nitrogen and control box connection, for night-vision devices during purging and inflation, control stream
Enter to control the nitrogen of box；
Described control box is provided with air-path interface I and air-path interface II, and wherein air-path interface I and charge valve pass through plastics gas
Pipeline connects, and described air-path interface II is connected with electrooptical device to be detected by plastics gas pipeline, on described control box also
It is provided with digital pressure gauge, three distribution of air flow valves, intelligent vacuum pump, on and off switch, power on lights, described three air-flows
Distributing valve is one and includes three regioselective distribution valve bodies, respectively vacuum position, nitrogen position, detection position, institute
Stating vacuum position to be connected with intelligent vacuum pump, described nitrogen position connects with charge valve, source nitrogen inflate to electrooptical device,
Purging, described detection position connects with digital pressure gauge, is provided with charge power supply and charging inlet in described control box, described
Charge power supply electrically connects with on and off switch and power on light, after turning on the power switch, shows charged electrical by power on light
The electricity in source, this equipment is also equipped with charger, for the charge power supply charging controlled in box.
Three distribution of air flow valves also have an initial position, and when distributing valve is positioned at initial position, other three positions are pass
Close device, do not connect, need to use which function, distributing valve is pulled to desired location.
The sensitivity of digital pressure gauge is 0.001atm, and range of error is-0.002～0.002atm.
A single-chip microcomputer is included in controlling the intelligent vacuum pump in box, the automatic record of vacuum when can use according to last time,
When using Deng next time, acquiescence is extracted into the vacuum of last registration, has saved time during field work, also substantially increases simultaneously
Accuracy and repeatability.
Further, described source nitrogen is 99.99% High Purity Nitrogen, and initial pressure is less than or equal to 100atm.The big I of source nitrogen
Customize with the demand according to client, meet client's demand to distinct device, on the premise of meeting optoelectronic device, as far as possible
Volume required, it is convenient for carrying.
Further, the range of accommodation of described pressure regulator is 0.1～2atm, range of error 0.001atm.
This equipment is divided into wide temperature range type and basic model, and wherein the use temperature of the components and parts of wide temperature range type is-40～50 DEG C, basic model
The use temperature of components and parts is-10～40 DEG C, and equipment is designed as two types, both ensure that and has met different use environment,
Can save again acquisition cost, this equipment cost of wide temperature range type is more than basic model, but range is extensive, and client can basis
Self need customization.
The using method of a kind of portable nitrogen purging leak detection evacuation charger as claimed in claim: it is characterized in that
Comprise the following steps:
(1), source nitrogen is spirally connected with pressure regulator, then by plastics gas pipeline by the inflation on pressure regulator
Valve is connected with the air-path interface I controlled on box, and the air-path interface II controlled on box is passed through plastics gas pipeline with to be detected
Electrooptical device connects；
(2), opening the on and off switch controlled on box, power on light is shown in green, represents that controlling box normally works,
If power on light is red, represents and control box electricity deficiency, need charging；In the case of power on light green, by three
Position distribution of air flow valve rotates to nitrogen position, by digital pressure gauge zero setting, represents that the pressure in plastics gas pipeline is zero, complete
The debugging of forming apparatus；
(3), nitrogen purging procedure method
Three distribution of air flow valves being pulled nitrogen position, manually regulates pressure regulating handle, the pressure of regulation to low-pressure meter is
2atm, Inflatable rotary valve connects to control box, electrooptical device to be detected is carried out nitrogen purging；
(4), evacuation method
1) manual evacuation: three distribution of air flow valves are pulled vacuum position, presses intelligent vacuum pump on and off switch, starts
The most repeatedly switch by vacuum-pump power supply after intelligent vacuum pump, be automatically stopped when digital pressure meter reading is setting value；
2) automatic vacuum: setting vacuum value on digital pressure gauge, numerical value is negative value, opens intelligent vacuum pumping source
Switch, when reaching preset value, intelligent vacuum pump is automatically stopped；
(5) inflation method
Three distribution of air flow valves being pulled nitrogen position, and opens charge valve, manually regulate pressure regulating handle, regulation is extremely
The pressure of low-pressure meter is 2atm, and Inflatable rotary valve connects to control box, cleans whole nitrogen pipeline system at short notice,
Inflation converting interface II is inserted the inflation inlet of the electrooptical device of band inflation, opens nitrogen charge valve, be inflated, when numeral pressure
Power table shows when reaching specified pressure, manual-lock charge valve；Observe the change of the digital manometric number of degrees simultaneously, detect whether
Gas leakage；
(6) leak detection test
1) three distribution of air flow valves are pulled leak detection test position, carries out according to the program of differential pressure leak detection method；
2) checking within the setting time, the pressure in photoelectric instrument is to rise or decline；
(7) system removes receipts
1) complete above-mentioned steps, three distribution of air flow valves are returned to assigned position；
2) close the hand control valve on nitrogen cylinder, unload pressure regulator, and by plastics gas pipeline from controlling filling of box
Pull down on gas converting interface I and inflation converting interface II；
3) equipment decoupled, and place back in packing crates.
It is an advantage of the current invention that:
1, the invention provides a kind of multifunctional package packing integrating purging, evacuation, leak detection and nitrogen charging, make for field
Industry uses the maintaining of high precision photoelectric equipment to provide satisfied conveniently approach；And can be according to different photoelectricity
The suit of equipment design different size, uses flexibly；
2, the assembling mode of miniaturization, modularity, flexibility, it is achieved integrate purging, evacuation, leak detection and nitrogen charging
Multi-functional；Parts can also be replaced conveniently and flexibly, change and improve the performance of suit；
3, fast and convenient gas circuit is flexible coupling, and adds multichannel air-flow distributor, and flow can carry out size adjustment；Can realize
Select purging, evacuation, leak detection and the difference in functionality of nitrogen charging；
4, manually or automatically control electrooptical device is purged, evacuation, leak detection and nitrogen charging, intelligent vacuum pump can be adjusted
The vacuum needed in joint real work, real-time digital demonstrates vacuum (negative pressure) value, may also display pressure required during inflation
Power (malleation) value；
5, as standard source of the gas, the inflatable chamber of photoelectric instrument is carried out the airtight leak detection of differential pressure method using source nitrogen, because nitrogen cylinder
Pressure can stably adjust to different pressures, can be made multiple standard source of the gas respectively, carries out various working leak detection, and gas cylinder body
The volume of the long-pending inflatable chamber being substantially greater than instrument, so accuracy is high.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to being embodied as
In mode or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below
It is some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the present invention.
Fig. 2 be the present invention hunt leak detection operating diagram
Fig. 3 is the operating diagram of evacuation of the present invention
Fig. 4 is the operating diagram that the present invention inflates, purges
Wherein: 1, source nitrogen 2, pressure regulator 3, control box 4, digital pressure gauge 5, three
Position distribution of air flow valve 6, intelligent vacuum pump 7, on and off switch 8, power on light 9, air-path interface
I 10, air-path interface II 11, hand control valve 12, pressure regulating handle 13, high pressure gauge
14, low-pressure meter 15, charge power supply 16, charge valve
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described embodiment
It is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right",
The orientation of the instruction such as " vertically ", " level ", " interior ", " outward " or position relationship be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description rather than instruction or imply that the device of indication or element must
Must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.Additionally,
Term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicate or imply relatively important
Property.
A kind of portable nitrogen as depicted purging leak detection evacuation charger, it is characterised in that: include being sequentially connected with
Source nitrogen 1, pressure regulator 2, and regulate and control the plastics gas pipeline controlling box 3 and connection of whole suit, described
Source nitrogen 1, pressure regulator 2, control box 3 and some plastics gas pipelines and be placed in packing crates, by nitrogen during use
Source of the gas 1, pressure regulator 2 and control box 3 connect；
Described source nitrogen is provided with gas circuit hand control valve 11, is used for controlling the nitrogen flow from source nitrogen；
Described pressure regulator includes:
Pressure regulating handle 12: when nitrogen purges, is adjusted to atmospheric pressure state needed for equipment by the nitrogen flowing into control box；
High pressure gauge 13: the pressure of instruction nitrogen cylinder；
Low-pressure meter 14: the nitrogen pressure after instruction regulation；
Charge valve 16: for threeway charge valve, one end is empty, additionally two ends respectively at source nitrogen and control box connection, are used for
Night-vision devices, during purging and inflation, control to flow into the nitrogen controlling box；
Described control box 3 is provided with air-path interface I 9 and air-path interface II 10, wherein air-path interface I 9 and charge valve 16
Being connected by plastics gas pipeline, described air-path interface II 10 is connected with electrooptical device to be detected by plastics gas pipeline,
4, three distribution of air flow valves 5 of digital pressure gauge, intelligent vacuum pump 6, on and off switch 7, electricity it is additionally provided with on described control box 3
Source display lamp 8, described three distribution of air flow valves 5 are one and include three regioselective distribution valve bodies, respectively vacuum
Put, nitrogen position, detection position, described vacuum position is connected with intelligent vacuum pump, and described nitrogen position connects with charge valve,
By source nitrogen to electrooptical device inflation, purging, described detection position connects with digital pressure gauge, is provided with and fills in described control box
Electricity power supply and charging inlet, described charge power supply electrically connects with on and off switch and power on light, after turning on the power switch,
Electricity by power on light display charge power supply.
Three distribution of air flow valves also have an initial position, and when distributing valve is positioned at initial position, other three positions are pass
Close device, do not connect, need to use which function, distributing valve is pulled to desired location.
The sensitivity of digital pressure gauge is 0.001atm, and range of error is-0.002～0.002atm.
A single-chip microcomputer is included in controlling the intelligent vacuum pump in box, the automatic record of vacuum when can use according to last time,
When using Deng next time, acquiescence is extracted into the vacuum of last registration, has saved time during field work, also substantially increases simultaneously
Accuracy and repeatability.
Further, described source nitrogen is 99.99% High Purity Nitrogen, and initial pressure is less than or equal to 100atm.The big I of source nitrogen
Customize with the demand according to client, meet client's demand to distinct device, on the premise of meeting optoelectronic device, as far as possible
Volume required, it is convenient for carrying.
Further, the range of accommodation of described pressure regulator is 0.1～2atm, range of error 0.001atm.
This equipment is divided into wide temperature range type and basic model, and wherein the use temperature of the components and parts of wide temperature range type is-40～50 DEG C, basic model
The use temperature of components and parts is-10～40 DEG C, and equipment is designed as two types, both ensure that and has met different use environment,
Can save again acquisition cost, this equipment cost of wide temperature range type is more than basic model, but range is extensive, and client can basis
Self need customization.
Embodiment one:
ATN-NVM-14 night vision device is carried out leak detection detection
The air-path interface II controlled on box is connected with the control valve of night vision device by plastics gas pipeline；
Opening the on and off switch controlled on box, power on light is shown in green, represents that controlling box normally works, by three gas
Stream distribution valves rotates to nitrogen position, by digital pressure gauge zero setting, represents that the pressure in plastics gas pipeline is zero, completes to set
Standby debugging；
Three distribution of air flow valves are pulled leak detection test position, and digital pressure gauge connects with the gas cavity in night vision device, according to
The program of differential pressure leak detection method is carried out；Pressure in digital pressure gauge display night vision device gas cavity is 1.88atm, relative to going out
Emblem mark standard has declined, and is spaced 30s, restarts digital pressure gauge, and pressure value is still 1.88atm, represents that this night vision device does not leaks
Gas；
Complete above-mentioned steps, three distribution of air flow valves are returned to initial position；And by plastics gas pipeline from controlling filling of box
Pull down on gas converting interface II；The equipment of partition, and place back in packing crates.
The whole leak detection process operation time is 2min, convenient and swift, simple to operate.
Embodiment two
ATN-NVM-14 night vision device is carried out nitrogen purging
Source nitrogen is spirally connected with pressure regulator, then by plastics gas pipeline by the charge valve on pressure regulator and control
Air-path interface I on box connects, and is connected by the control valve of plastics gas pipeline with night vision device by the air-path interface II controlled on box
Connect；
Opening the on and off switch controlled on box, power on light is shown in green, represents that controlling box normally works, by three gas
Stream distribution valves rotates to nitrogen position, by digital pressure gauge zero setting, represents that the pressure in plastics gas pipeline is zero, completes to set
Standby debugging；
Gas circuit hand control valve on manual unlocking source nitrogen, the pressure of high pressure gauge display source nitrogen is 89atm, the most manually
Regulation pressure regulating handle, the pressure of regulation to low-pressure meter is 2atm, and Inflatable rotary valve connects, to night vision to control box
Instrument carries out nitrogen purging；Purge time is 1min；
Close control valve on night vision device after having purged, then three distribution of air flow valves are rotated to initial position, then will fill
Air valve rotates to being empty end, closing control box power supply, and is pulled down from the inflation converting interface II controlling box by plastics gas pipeline；
The equipment of partition, and place back in packing crates.
Whole purge used time 2.5min, easy and simple to handle.
Embodiment three
To depending on happy infrared telescope carries out evacuation charge operation
Source nitrogen is spirally connected with pressure regulator, then by plastics gas pipeline by the charge valve on pressure regulator and control
Air-path interface I on box connects, and is connected by the control valve of plastics gas pipeline with night vision device by the air-path interface II controlled on box
Connect；
Opening the on and off switch controlled on box, power on light is shown in green, represents that controlling box normally works, by three gas
Stream distribution valves rotates to nitrogen position, by digital pressure gauge zero setting, represents that the pressure in plastics gas pipeline is zero, completes to set
Standby debugging；
Manual evacuation: three distribution of air flow valves are pulled vacuum position, presses intelligent vacuum pump on and off switch, starts intelligence
The most repeatedly switch by vacuum-pump power supply after vacuum pump, be automatically stopped when digital pressure meter reading is setting value-0.8atm；
Three distribution of air flow valves being pulled nitrogen position, and opens charge valve, manually regulate pressure regulating handle, regulation is extremely
The pressure of low-pressure meter is 2atm, and Inflatable rotary valve connects to control box, cleans whole nitrogen pipeline system at short notice,
Inflation converting interface II is inserted the inflation inlet of the electrooptical device of band inflation, opens nitrogen charge valve, be inflated, when numeral pressure
Power table shows when reaching 2atm, manual-lock charge valve；Observe the change of the digital manometric number of degrees simultaneously, detect whether Lou
Gas；
Evacuation for the second time
Three distribution of air flow valves are pulled vacuum position, presses intelligent vacuum pump on and off switch, start intelligent vacuum pump, intelligence
Vacuum pump continuous firing, until the memory value-0.8atm intelligent vacuum pump that show value is last time on digital pressure gauge is stopped automatically
Only；
Three distribution of air flow valves being pulled nitrogen position, and opens charge valve, manually regulate pressure regulating handle, regulation is extremely
The pressure of low-pressure meter is 2atm, and Inflatable rotary valve connects to control box, cleans whole nitrogen pipeline system at short notice,
Inflation converting interface II is inserted the inflation inlet of the electrooptical device of band inflation, opens nitrogen charge valve, be inflated, when numeral pressure
Power table shows when reaching 2atm, manual-lock charge valve；Observe the change of the digital manometric number of degrees simultaneously, detect whether Lou
Gas；
Close control valve on night vision device after having purged, then three distribution of air flow valves are rotated to initial position, then will fill
Air valve rotates to being empty end, closing control box power supply, and is pulled down from the inflation converting interface II controlling box by plastics gas pipeline；
The equipment of partition, and place back in packing crates.
Twice evacuation and inflated with nitrogen repeatedly, replaces completely by the gas in night vision device, whole process used time 5min.
The equipment of the present invention is applicable to the optoelectronic device of different model.
Embodiment four
Choose the optoelectronic device of different model, under equivalent environment, use 3～6 months, contrast check at any time the equipment of purging with
Do not carry out the parameters such as table 1 of the equipment checked
As can be seen from Table 1, use the equipment of the present invention to carry out detection maintenance at any time, can effectively improve making of optoelectronic device
By performance, increase the service life.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；Although
With reference to foregoing embodiments, the present invention is described in detail, it will be understood by those within the art that: it is still
Technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is carried out
Equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technical side
The scope of case.
Claims (10)
1. a portable nitrogen purging leak detection evacuation charger, it is characterized in that: include source nitrogen, the pressure regulator being sequentially connected with, and regulate and control the plastics gas pipeline controlling box and connection of whole suit, described source nitrogen, pressure regulator, control box and some plastics gas pipelines are placed in packing crates, described source nitrogen is provided with gas circuit hand control valve, and described pressure regulator includes: pressure regulating handle, high pressure gauge, low-pressure meter, charge valve；
Described control box is provided with air-path interface I and air-path interface II, and wherein air-path interface I is connected by plastics gas pipeline with charge valve；Described air-path interface II is connected with electrooptical device to be detected by plastics gas pipeline, and described control box is additionally provided with digital pressure gauge, three distribution of air flow valves, intelligent vacuum pump, on and off switch, power on lights；Described three distribution of air flow valves are one and include three regioselective distribution valve bodies, it is respectively vacuum position, nitrogen position, detection position, described vacuum position is connected with intelligent vacuum pump, described nitrogen position connects with charge valve, by source nitrogen to electrooptical device inflation, purging, described detection position connects with digital pressure gauge, it is provided with charge power supply and charging inlet in described control box, described charge power supply electrically connects with on and off switch and power on light, after turning on the power switch, by the electricity of power on light display charge power supply.
One the most according to claim 1 portable nitrogen purging leak detection evacuation charger, it is characterised in that: described source nitrogen is 99.99% High Purity Nitrogen, and initial pressure is less than or equal to 100atm.
One the most according to claim 1 portable nitrogen purging leak detection evacuation charger, it is characterised in that: the range of accommodation of described pressure regulator is 0.1～2atm, range of error 0.001atm.
One the most according to claim 1 portable nitrogen purging leak detection evacuation charger, it is characterised in that: the use temperature of described control box is-40～50 DEG C.
One the most according to claim 1 portable nitrogen purging leak detection evacuation charger, it is characterised in that: the sensitivity of described digital pressure gauge is 0.001atm, and range of error is-0.002～0.002atm.
6. the using method of a portable nitrogen as claimed in claim 1 purging leak detection evacuation charger: it is characterized in that comprising the following steps:
(1) source nitrogen is spirally connected with pressure regulator, then by plastics gas pipeline, the charge valve on pressure regulator is connected with the air-path interface I controlled on box, the air-path interface II controlled on box is connected with electrooptical device to be detected by plastics gas pipeline；
(2) opening the on and off switch controlled on box, power on light is shown in green, represents that controlling box normally works, if power on light is red, it is not enough that expression controls box electricity, needs charging；In the case of power on light green, three distribution of air flow valves are rotated to nitrogen position, by digital pressure gauge zero setting, represent that the pressure in plastics gas pipeline is zero, complete the debugging of equipment；
(3) nitrogen purging procedure method
Three distribution of air flow valves being pulled nitrogen position, manually regulates pressure regulating handle, the pressure of regulation to low-pressure meter is 2atm, and Inflatable rotary valve connects to control box, and electrooptical device to be detected is carried out nitrogen purging；
(4) evacuation method
1) manual evacuation: three distribution of air flow valves are pulled vacuum position, presses intelligent vacuum pump on and off switch, the most repeatedly switchs by vacuum-pump power supply, be automatically stopped when digital pressure meter reading is setting value after starting intelligent vacuum pump；
2) automatic vacuum: setting vacuum value on digital pressure gauge, numerical value is negative value, opens intelligent vacuum pump on and off switch, and when reaching preset value, intelligent vacuum pump is automatically stopped；
(5) inflation method
Three distribution of air flow valves being pulled nitrogen position, and opens charge valve, manually regulate pressure regulating handle, the pressure of regulation to low-pressure meter is that 2atm Inflatable rotary valve connects to control box, cleans whole nitrogen pipeline system at short notice.Inflation converting interface II is inserted the inflation inlet of electrooptical device to be inflated, opens nitrogen charge valve, be inflated.When digital pressure gauge show reach specified pressure time, manual-lock charge valve；
(6) leak detection test
1) three distribution of air flow valves are pulled leak detection test position, carries out according to the program of differential pressure leak detection method；
2) checking within the setting time, the pressure in photoelectric instrument is to rise or decline；If pressure declines explanation gas leakage；
(7) system removes receipts
1) complete above-mentioned steps, three distribution of air flow valves are returned to assigned position；
2) close the hand control valve on nitrogen cylinder, unload pressure regulator, and plastics gas pipeline is pulled down from the inflation converting interface I controlling box and inflation converting interface II；
3) equipment decoupled, and place back in packing crates.
7. require that the portable nitrogen described in 6 purges the using method of leak detection evacuation charger according to power: it is characterized in that: the use temperature of described control box is-40～50 DEG C.
8. require that the portable nitrogen described in 6 purges the using method of leak detection evacuation charger according to power: it is characterized in that: described use nitrogen purging procedure flow time is 2～5min.
9. require that the portable nitrogen described in 6 purges the using method of leak detection evacuation charger according to power: it is characterized in that: described use evacuation inflated with nitrogen program circuit time are 4～8min.
10. require that the portable nitrogen described in 6 purges the using method of leak detection evacuation charger according to power: it is characterized in that: described use leak detection test program flow time is 1～3min.
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| CN109141782A (en) * | 2018-09-18 | 2019-01-04 | 昆明北方红外技术股份有限公司 | The airtight test of ultralow pressure and gas substitution detector |
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