CN205781974U - A kind of portable nitrogen purging leak detection evacuation charger - Google Patents
A kind of portable nitrogen purging leak detection evacuation charger Download PDFInfo
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- CN205781974U CN205781974U CN201620455216.1U CN201620455216U CN205781974U CN 205781974 U CN205781974 U CN 205781974U CN 201620455216 U CN201620455216 U CN 201620455216U CN 205781974 U CN205781974 U CN 205781974U
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Abstract
A kind of portable nitrogen purging leak detection evacuation charger, it is characterised in that: include source nitrogen, the pressure regulator being sequentially connected with, and regulate and control control box and the plastics gas pipeline of whole suit.Described source nitrogen, pressure regulator, control box and two plastics gas pipelines are placed in packing crates.During use, source nitrogen, pressure regulator and control box are connected；Described control He Shang road system 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, and described air-path interface II is connected with electrooptical device to be detected by plastics gas pipeline.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.Beneficial effect: miniaturization, modularity, the assembling mode of flexibility, it is achieved integrate the multi-functional of purging, evacuation, leak detection and nitrogen charging；Parts can also be replaced conveniently and flexibly, change and improve the performance of suit.
Description
Technical field
This utility model relates to the nitrogen purger of electrooptical device, is specifically related to a kind of portable nitrogen purging leak detection evacuation charger.
Background technology
Photoelectric instrument and device, see such as visible ray and take aim at shooting, imaging and laser device etc. are taken aim in lll night vision, infrared sight, uses the most 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 leakage and pollute dew condensation phenomenon, cause image quality to decline, and cause using error.It is made to be in good working state all the time it is necessary to dust-proof, moistureproof, anti-condensation, high-voltage breakdown mould proof, anti-, rainproof, sand-proof, to ensure image quality and the electronic circuit steady operation of optical system so that it is can see clearly, look far.The effective care and maintenance measure currently taked, 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 the service life of beneficially extension device.Optoelectronic device maintenance need specialty equipment and personnel, normal conditions do not possess 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 carry out 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 heavy, it is impossible to carry with, can only nitrogen charging, and the blowing pressure controls to be difficult to precisely, even to damage internal works；Alternate manner, 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 inflation technology, a part indispensable during becoming its product manufacturing and using.Suit can not only reduce the time needed for E-O Weapons maintenance and failture evacuation and cost, maintains systematic function, extends its service life, improves survival ability and operation effectiveness, it is also possible to is effectively improved production process product quality and performances.
This utility model overcomes disadvantages mentioned above completely, and volume is little, lightweight, can carry with and scene dismounts, and collects nitrogen purging, leak detection, evacuation and aerates integrally, safe and reliable.
Utility model content
For the problems referred to above, the purpose of this utility model provides one, and volume is little, lightweight, can carry with and scene dismounts, collect nitrogen purging, leak detection, evacuation and aerate the equipment of one, handy to carry about, optoelectronic device can be detected in real time during operation in the wild and nitrogen purging etc..
This utility model solves above-mentioned technical problem and be the technical scheme is that a kind of 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, source nitrogen, pressure regulator and control box are connected during use；
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, controls to flow into the nitrogen of control box；
nullDescribed control box is provided with air-path interface I and air-path interface II，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，It is additionally provided with digital pressure gauge on described control box、Three distribution of air flow valves、Intelligent vacuum pump、On and off switch、Power on light，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，Inflated to electrooptical device by source nitrogen、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，Electricity by power on light display charge power supply，This equipment is also equipped with charger，For to 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 shutoff device, do not connect, and need to use which function, pull distributing valve 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 accuracy and repeatability simultaneously.
Further, described source nitrogen is 99.99% High Purity Nitrogen, and initial pressure is less than or equal to 100atm.The size of source nitrogen can customize according to the demand of client, meets client's demand to distinct device, on the premise of meeting optoelectronic device, the most volume required, 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, wherein the use temperature of the components and parts of wide temperature range type is-40～50 DEG C, the use temperature of the components and parts of basic model is-10～40 DEG C, equipment is designed as two types, both ensure that and met different use environment, and can save again acquisition cost, this equipment cost of wide temperature range type is more than basic model, but range is extensive, client can need customization according to self.
The using method of a kind of portable nitrogen purging leak detection evacuation charger as claimed in claim: 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 are pulled nitrogen position, and open charge valve, manually regulating pressure regulating handle, the pressure of regulation to low-pressure meter is 2atm, and Inflatable rotary valve connects to control box, clean 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 digital pressure gauge show reach specified pressure time, 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 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.
The utility model has the advantage of:
1, this utility model provides a kind of multifunctional package packing integrating purging, evacuation, leak detection and nitrogen charging, uses the maintaining of high precision photoelectric equipment to provide for field work and meets conveniently approach；And can use flexibly according to the suit of different optoelectronic device design different sizes；
2, the assembling mode of miniaturization, modularity, flexibility, it is achieved integrate the multi-functional of purging, evacuation, leak detection and nitrogen charging；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 selecting 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 regulate the vacuum needed in real work, real-time digital demonstrates vacuum (negative pressure) value, may also display pressure (malleation) value required during inflation；
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 the pressure of nitrogen cylinder can stably adjust to different pressures, multiple standard source of the gas can be made respectively, carry out various working leak detection, and gas cylinder volume is substantially greater than the volume of inflatable chamber of instrument, so accuracy is high.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model detailed description of the invention or technical scheme of the prior art, the accompanying drawing used required in detailed description of the invention or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the operating diagram of this utility model leak detection detection
Fig. 3 is the operating diagram of this utility model evacuation
Fig. 4 is this utility model inflation, the operating diagram of purging
Wherein: 1, source nitrogen 2, pressure regulator 3, control box 4, digital pressure gauge 5, three distribution of air flow valves 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 valves
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described, it is clear that described embodiment is a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
In description of the present utility model, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be for only for ease of description this utility model and simplifying and describe; rather than instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
A kind of portable nitrogen as depicted purging leak detection evacuation charger, it is characterized in that: include source nitrogen 1, the pressure regulator 2 being sequentially connected with, 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 are placed in packing crates, source nitrogen 1, pressure regulator 2 and control box 3 are connected during use；
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, for night-vision devices during purging and inflation, control to flow into the nitrogen of control box；
nullDescribed control box 3 is provided with air-path interface I 9 and air-path interface II 10，Wherein air-path interface I 9 is connected by plastics gas pipeline with charge valve 16，Described air-path interface II 10 is connected with electrooptical device to be detected by plastics gas pipeline，It is additionally provided with digital pressure gauge 4 on described control box 3、Three distribution of air flow valves 5、Intelligent vacuum pump 6、On and off switch 7、Power on light 8，Described three distribution of air flow valves 5 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，Inflated to electrooptical device by source nitrogen、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，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 shutoff device, do not connect, and need to use which function, pull distributing valve 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 accuracy and repeatability simultaneously.
Further, described source nitrogen is 99.99% High Purity Nitrogen, and initial pressure is less than or equal to 100atm.The size of source nitrogen can customize according to the demand of client, meets client's demand to distinct device, on the premise of meeting optoelectronic device, the most volume required, 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, wherein the use temperature of the components and parts of wide temperature range type is-40～50 DEG C, the use temperature of the components and parts of basic model is-10～40 DEG C, equipment is designed as two types, both ensure that and met different use environment, and can save again acquisition cost, this equipment cost of wide temperature range type is more than basic model, but range is extensive, client can need customization according to self.
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, and rotates three distribution of air flow valves to nitrogen position, by digital pressure gauge zero setting, represents that the pressure in plastics gas pipeline is zero, complete the debugging of equipment；
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, carries out according to the program of differential pressure leak detection method；Pressure in digital pressure gauge display night vision device gas cavity is 1.88atm, has declined relative to factory calibration, has been spaced 30s, restarts digital pressure gauge, and pressure value is still 1.88atm, represents that this night vision device is air tight；
Complete above-mentioned steps, three distribution of air flow valves are returned to initial position；And plastics gas pipeline is pulled down from the inflation converting interface II controlling box；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, 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 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, and rotates three distribution of air flow valves to nitrogen position, by digital pressure gauge zero setting, represents that the pressure in plastics gas pipeline is zero, complete the debugging of equipment；
Gas circuit hand control valve on manual unlocking source nitrogen, the pressure of high pressure gauge display source nitrogen is 89atm, the most manually regulates pressure regulating handle, and the pressure of regulation to low-pressure meter is 2atm, and Inflatable rotary valve connects to control box, and night vision device is carried 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 charge valve is rotated to being empty end, closing control box power supply, and plastics gas pipeline is pulled down from the inflation converting interface II controlling box；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, 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 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, and rotates three distribution of air flow valves to nitrogen position, by digital pressure gauge zero setting, represents that the pressure in plastics gas pipeline is zero, complete the debugging of equipment；
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-0.8atm after starting intelligent vacuum pump；
Three distribution of air flow valves are pulled nitrogen position, and open charge valve, manually regulating pressure regulating handle, the pressure of regulation to low-pressure meter is 2atm, and Inflatable rotary valve connects to control box, clean 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 digital pressure gauge show reach 2atm time, manual-lock charge valve；Observe the change of the digital manometric number of degrees simultaneously, detect whether gas leakage；
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, intelligent vacuum pump continuous firing, until the memory value-0.8atm intelligent vacuum pump that show value is last time on digital pressure gauge is automatically stopped；
Three distribution of air flow valves are pulled nitrogen position, and open charge valve, manually regulating pressure regulating handle, the pressure of regulation to low-pressure meter is 2atm, and Inflatable rotary valve connects to control box, clean 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 digital pressure gauge show reach 2atm time, manual-lock charge valve；Observe the change of the digital manometric number of degrees simultaneously, detect whether gas leakage；
Close control valve on night vision device after having purged, then three distribution of air flow valves are rotated to initial position, then charge valve is rotated to being empty end, closing control box power supply, and plastics gas pipeline is pulled down from the inflation converting interface II controlling box；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.
Equipment of the present utility model is applicable to the optoelectronic device of different model.
Embodiment four
Choosing the optoelectronic device of different model, use 3～6 months under equivalent environment, contrast checks the equipment of purging at any time and does not carries out the parameters such as table 1 of equipment that checks
As can be seen from Table 1, use equipment of the present utility model to carry out detection maintenance at any time, can effectively improve the serviceability of optoelectronic device, increase the service life.
Last it is noted that various embodiments above is only in order to illustrate the technical solution of the utility model, it is not intended to limit；Although this utility model being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, 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 the scope of this utility model each embodiment technical scheme.
Claims (5)
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.
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| CN201620455216.1U CN205781974U (en) | 2016-05-18 | 2016-05-18 | A kind of portable nitrogen purging leak detection evacuation charger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620455216.1U CN205781974U (en) | 2016-05-18 | 2016-05-18 | A kind of portable nitrogen purging leak detection evacuation charger |
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| CN205781974U true CN205781974U (en) | 2016-12-07 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864634A (en) * | 2016-05-18 | 2016-08-17 | 天津栢奕容科技发展有限公司 | Portable nitrogen purging, leakage detection, vacuum pumping and inflation device and application method |
| CN106965266A (en) * | 2017-05-16 | 2017-07-21 | 青岛沃富特机械制造有限公司 | A kind of vacuum distribution and its wood craft machines |
| CN108087719A (en) * | 2017-12-13 | 2018-05-29 | 陕西宝成航空仪表有限责任公司 | The air charging system of small-sized sealing product and the inflation method of the device |
| CN110764543A (en) * | 2018-07-26 | 2020-02-07 | 中国石油天然气股份有限公司 | Device and method for maintaining vacuum degree of instrument analyzer |
-
2016
- 2016-05-18 CN CN201620455216.1U patent/CN205781974U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864634A (en) * | 2016-05-18 | 2016-08-17 | 天津栢奕容科技发展有限公司 | Portable nitrogen purging, leakage detection, vacuum pumping and inflation device and application method |
| CN106965266A (en) * | 2017-05-16 | 2017-07-21 | 青岛沃富特机械制造有限公司 | A kind of vacuum distribution and its wood craft machines |
| CN108087719A (en) * | 2017-12-13 | 2018-05-29 | 陕西宝成航空仪表有限责任公司 | The air charging system of small-sized sealing product and the inflation method of the device |
| CN110764543A (en) * | 2018-07-26 | 2020-02-07 | 中国石油天然气股份有限公司 | Device and method for maintaining vacuum degree of instrument analyzer |
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Granted publication date: 20161207 Effective date of abandoning: 20180626 |
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| AV01 | Patent right actively abandoned |