CN208736637U - The airtight test of ultralow pressure and gas substitution detector - Google Patents
The airtight test of ultralow pressure and gas substitution detector Download PDFInfo
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- CN208736637U CN208736637U CN201821521665.7U CN201821521665U CN208736637U CN 208736637 U CN208736637 U CN 208736637U CN 201821521665 U CN201821521665 U CN 201821521665U CN 208736637 U CN208736637 U CN 208736637U
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Abstract
The utility model discloses a kind of airtight test of ultralow pressure and gas substitution detector, it (is provided by the air pump of pumping gas or bottled high pure nitrogen) including gas source, precision pressure adjuster for regulating gas pressure, input for controlling gas flow and pipeline opening and closing ends unit, precision pressure gauge for the pressure value in monitoring instrument or equipment, the Hygrothermograph of output cut-off unit and the temperature and humidity for detecting external environment for control piper opening and closing, gas source, precision pressure adjuster, output and input cut-off unit, successively pipeline connects connector, connector is connect with the gas entry ports interface of instrument or equipment, precision pressure gauge is set on the pipeline output and input between cut-off unit.By the utilization of the present apparatus, the monitoring to each equipment and each group parts working environment of instrument internal is completed, guarantees that equipment and instrument internal have an optimal working environment and state, reduces the failure rate of equipment and instrument, extend the service life of equipment and instrument.
Description
Technical field
The utility model relates to a kind of ultralow pressure seal cavity airtight test, gas displacements to control, more particularly to one
There are the highly sophisticated device instrument of airtight requirement and the detection device of equipment inner cavity and surrounding enviroment sealing sexual isolation a bit.
Background technique
With China science and technology advance by leaps and bounds, many new and high technologies obtained it is extensive development and application, light, machine,
Electricity combines, accurate, multi-functional, high-precision, supercomputing "smart" products (hereinafter referred photoelectric instrument and equipment) meet the tendency of
And give birth to, the especially utilization in defence and military field, so that China's military equipment battlefield adaptability and precision strike capability are all
It has obtained significantly improving.
For the utilization in defence and military field, to guarantee that photoelectric instrument and equipment reliably work and run, to work
The cleanliness for making environment (photoelectric instrument and equipment internal environment) has strict requirements, and the carrying of photoelectric instrument and equipment is flat
Platform (weaponry) use environment is relatively all more severe, just because of there are such a paradox.So to protect photoelectric instrument
With equipment in the presence of a harsh environment can be reliable and stable operation, photoelectric instrument and equipment have sealing index when designing and manufacturing
It is required that main purpose seeks to that each group parts of product and the external world are had to a partition well, prevent pernicious gas (moisture,
Corrosive gas etc.) enter photoelectric instrument and equipment inner cavity, on its each group parts cause corrode and influence instrument performance and
It operates normally.Due to the particularity with object, carrying platform has photoelectric instrument and equipment itself sternly in volume, weight
The Con trolling index of lattice, so more complicated sealing structure can not be used in design, it is also not possible to press setting for force container
Meter standard designs to be sealed.On the other hand, corrosion caused by just sealing is also one can not reflect in a short time
Problem, thus seldom draw attention, but its destructiveness can not despise.
Photoelectric instrument and the generally existing different degrees of etching problem of equipment, the corrosion of general environment are relatively small at present；
But in a coastal generation and low altitude area, ambient humidity is larger, temperature is high, especially region following the line of the sea, and air humidity is larger, air
In also contain a large amount of corrosive media, these media also add the corrosion of photoelectric instrument and equipment due to the temperature of environment is got higher
Speed, working environment is more severe, and the etching problem of the photoelectric instrument and equipment that work under these circumstances is with regard to especially prominent.With
Using time, the difference of use environment (temperature, humidity), if without scientific and effective cable maintenance device and method, product
Failure rate will be much higher more than other environment, serious or even make photoelectric instrument and equipment scrapping, and bring loss is very big,
Because the added value of these instruments is all higher, it is dynamic then all hundreds of thousands, it is millions of differ, while also being produced not to the training of army
With the influence of degree.
But product generates etching problem because sealing the reason of and is not without method solution, only because currently lacking a kind of inspection
The device of survey product itself sealing situation and an effective scientific maintenance means and method.
The permanent highest height above sea level of China someone is 5373 meters (Langkazi county in Tibet, every country, the pool Pu Majiang seat of government), with
The permanent minimum height above sea level of someone is averaged 200 meters of <, and two places height above sea level height difference is 5173 meters.
Table 1 lists the temperature of normal atmosphere, atmospheric pressure value at different height.It as seen from Table 1, is 5173 meters in height above sea level height difference
In the range of, atmospheric pressure differs about are as follows: 989.5-520.8=468.7hPa=46.87
KPa, this is a pressure difference factor as caused by areal variation.
According to physics formula: pv=NRT；(instrument inner cavity is idle empty for p---- pressure (unit: Pa), v---- gas volume
Between volume) (m3), N---- gas molar amount (unit: mol), R---- molar gas constant (unit: 8.314J/mol.k),
T---- thermodynamic temperature temperature (unit: k), N, R are constant, and for same product, v is also constant；It can from formula
Out, p changes with the variation of T, and with the variation of environment temperature, pressure is also increased with the raising of temperature, with the reduction of temperature
It reduces, the influence there is illustrated temperature to air pressure.
For military use product, region, which is flowed or is placed under open-air atmosphere, is subjected to day and night temperature variation (Seasonal Temperature Difference change
Change etc.) it is all a kind of normality；Bottom Altitude Regions are moved to from high altitude localities, or with being moved to High aititude from low altitude area
Area；May all it occur at any time again or because temperature change can all cause product cavity pressure variation etc. all.The variation of height above sea level and
The variation of climate temperature is all the factor for causing air pressure fluctuation, when cavity pressure is in negative pressure state, the humidity of external environment or
Corrosive gas just has the possibility into interiors of products, the risk also just corroded at product.But how just can know that
The leakproofness of photoelectric instrument and equipment, air pressure inside situation and effective care and maintenance to photoelectric instrument and equipment, this is just
It needs to take some necessary means and method.
Utility model content
The utility model is in view of the problems of the existing technology and insufficient, provide a kind of airtight test of novel ultralow pressure and
Gas displacement detection device, primarily directed to current force equipment high-volume photoelectric detection equipment, light take aim at fire control sensing head and
Anti-corrosion and the maintenance of photoelectricity command system and design.
The utility model is to solve above-mentioned technical problem by following technical proposals:
The utility model provides a kind of airtight test of ultralow pressure and gas substitution detector, it is characterized in that comprising
For providing the gas cylinder of the gas of dried and clean, for pumping the air pump of gas in gas cylinder, for the precision of regulating gas pressure
Pressure regulator ends unit, for monitoring instrument to be monitored or setting for controlling the input of gas flow and pipeline opening and closing
The precision pressure gauge of pressure value in standby, the output being opened and closed for control piper end unit, for connecting instrument to be monitored
Or equipment connector and the temperature and humidity for detecting locating external environment Hygrothermograph, the gas cylinder, air pump,
Precision pressure adjuster, input cut-off unit, output cut-off unit successively pipeline connect with connector, the connector for
Instrument or the connection of the gas entry ports interface of equipment, the precision pressure gauge is set to input cut-off unit and output cut-off is single
On pipeline between member.
Preferably, the input cut-off unit is diaphragm valve.
Preferably, the output cut-off unit is diaphragm valve.
The utility model also provides a kind of airtight test of ultralow pressure and gas substitution detector, it is characterized in that, packet
Include for provide high pure nitrogen it is bottled, for regulating gas pressure precision pressure adjuster, for control gas flow and
The input cut-off unit of pipeline opening and closing, is used for the precision pressure gauge for monitoring the pressure value in instrument or equipment to be monitored
The output of control piper opening and closing ends unit, the connector for connecting instrument or equipment to be monitored and for detecting
Locate the Hygrothermograph of the temperature and humidity of external environment, bottled, the precision pressure adjuster, input cut-off unit, output are cut
Successively pipeline connects stop element with connector, and the connector is used to connect with the gas entry ports interface of instrument or equipment,
The precision pressure gauge is set on the pipeline between input cut-off unit and output cut-off unit.
Preferably, the input cut-off unit is diaphragm valve.
Preferably, the output cut-off unit is diaphragm valve.
On the basis of common knowledge of the art, above-mentioned each optimum condition, can any combination to get the utility model respectively compared with
Good example.
The positive effect of the utility model is:
By the utilization of the device of the utility model, complete to work to each group parts of each equipment and instrument internal to be monitored
The monitoring of environment guarantees that equipment and instrument internal have an optimal working environment and state, reduces the failure of equipment and instrument
Rate extends the service life of equipment and instrument.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the ultralow pressure of the utility model embodiment 1 airtight test and gas substitution detector.
Fig. 2 is the structural schematic diagram of the ultralow pressure of the utility model embodiment 2 airtight test and gas substitution detector.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, those of ordinary skill in the art's every other embodiment obtained without making creative work, all belongs to
In the range of the utility model protection.
Embodiment 1
As shown in Figure 1, the present embodiment provides a kind of airtight test of ultralow pressure and gas substitution detectors comprising gas cylinder
1, for pumping the air pump 2 of gas in gas cylinder 1, for the precision pressure adjuster 3 of regulating gas pressure, for controlling gas stream
The input of amount and pipeline opening and closing ends unit 4, the precision pressure gauge for monitoring the pressure value in instrument or equipment to be monitored
5, the Hygrothermograph of the temperature and humidity for the output cut-off unit 6 of control piper opening and closing, for detecting locating external environment
7, for connecting the connector 8 of instrument or equipment to be monitored, the gas cylinder 1, air pump 2, precision pressure adjuster 3, input are cut
Stop element 4, output cut-off unit 6, successively pipeline connects connector 8, and the connector 8 is used for defeated with the gas of instrument or equipment
The connection of inbound port interface, the precision pressure gauge 5 are set on the pipeline between input cut-off unit 4 and output cut-off unit 6,
The Hygrothermograph 7 is arranged independently of in the device except gas circuit.
Wherein, the input cut-off unit 4 and output cut-off unit 6 are diaphragm valve.
Temperature is used to judge the reference of instrument or equipment leakproofness, and temperature High variation will affect the variation of air pressure；Humidity is
The formulation of instrument and equipment maintenance period provides reference, can be made the appropriate adjustments according to humidity size maintenance period, improve instrument and
The timeliness of corrective maintenance.
Embodiment 2
As shown in Fig. 2, the present embodiment provides a kind of airtight test of ultralow pressure and gas substitution detectors comprising be used for
There is provided high pure nitrogen bottled 1 ', for the precision pressure adjuster 3 of regulating gas pressure, for controlling gas flow and pipeline
The input of opening and closing ends unit 4, the precision pressure gauge 5 for monitoring the pressure value in instrument or equipment to be monitored, for controlling
The output of tubulation road opening and closing ends unit 6, the connector 8 for connecting instrument or equipment to be monitored and for detecting
Locate the Hygrothermograph 7 of the temperature and humidity of external environment, described bottled 1 ', precision pressure adjuster 3, input cut-off unit 4, defeated
Successively pipeline connects cut-off unit 6 with connector 8 out, and the connector 8 is used to connect with the gas entry ports of instrument or equipment
Mouth connection, the precision pressure gauge 5 are set to input cut-off unit 4 and export on the pipeline ended between unit 6.
The airtight test process of instrument or equipment to be monitored: air pump 2 pumped out from gas cylinder 1 dried and clean gas or
High pure nitrogen directly is provided by bottled 1 ', the gas or high pure nitrogen of dried and clean pass through precision pressure adjuster 3, precision pressure
Adjuster 3 adjusts the air pressure upper limit for entering the equipment or instrument, it is therefore an objective to make to be input to intracavitary air pressure one of the equipment or instrument
Safe air pressure.Input cut-off unit 4 controls the flow of the gas flowed through, and gas passes through connector and instrument through output cut-off unit 6
It is transported in the cavity of the equipment or instrument after device or the gas entry ports of equipment, at this time instrument or the gas output end mouth of equipment
It closes.The gas of dried and clean is constantly transported in the cavity of the equipment or instrument, in the process not by precision pressure gauge 5
Pressure value in disconnected ground monitoring device or instrument closes input cut-off unit 4 when pressure value reaches setting value, dried and clean
Gas or high pure nitrogen are no longer delivered in the cavity of the equipment or instrument.After a period of time, set if precision pressure gauge 5 detects
Pressure value in standby or instrument constantly reduces, then shows that the equipment or instrument reveals gas, poor air-tightness, need to instrument or equipment into
Row leakproofness processing maintenance increases the substitution gas frequency.
The gas displacement control process of instrument or equipment to be monitored: after a period of time, if precision pressure gauge 5 detects
The equipment or instrument in pressure value remain at setting value, then show that the equipment or instrument keeps one's end up, air-tightness is good, at this moment,
It can carry out gas displacement control.The gas or high pure nitrogen of dried and clean are by air pump 2, precision pressure adjuster 3, input cut-off
Unit 4 and output cut-off unit 6 and instrument or the gas entry ports of equipment are transported in the cavity of the equipment or instrument, at this time
Instrument or the gas output end mouth of equipment are opened, gas input of the gas or high pure nitrogen of dried and clean through instrument or equipment
Mouthful be transported in the cavity of the equipment or instrument, in the cavity of the equipment or instrument in moist, mordant gas through instrument or
The gas output end mouth of equipment exports.Inner chamber gas is carried out to it in the case where guaranteeing the equipment or instrument safety in this way to set
It changes, goes out moist, mordant gas in inner cavity with the gas displacement of dried and clean.In the process, precision pressure gauge 5 monitors
The pressure maintaining value of the variation of pressure and display instrument or equipment in replacement process.
The air-tightness self-test process of the present apparatus: the gas of dried and clean provides high-purity by air pump 2 or by bottled High Purity Nitrogen
Nitrogen, precision pressure adjuster 3, input cut-off unit 4 are delivered to output cut-off unit 6, since output cut-off unit 6 is closed,
Then the gas in the present apparatus will not export.The pressure value of the present apparatus is continually monitored by precision pressure gauge 5 in the process,
Pressure value closes input cut-off unit 4 when reaching setting value, the gas or high pure nitrogen of dried and clean no longer input.When through one section
Between after, if precision pressure gauge 5 detects the pressure value in the present apparatus and constantly reduces, show the present apparatus reveal gas, air-tightness
Difference；If precision pressure gauge 5 detects the pressure value in the present apparatus and remains setting value, show that the present apparatus keeps one's end up, it is airtight
Property is good.
The utility model primarily directed to high-volume photoelectric detection equipment, light that current force is equipped take aim at fire control sensing head and
The gas attack of photoelectricity command system and product maintenance are maintained and are designed, while can also be to the product or production for having the airtight requirement of anti-corrosion
Article unit carries out gas displacement control, it is ensured that the product cavity space gases are the corrosion-free gas of clean dried, can also be to anti-
The product or product unit of rotten airtight requirement carry out air-leakage test, judge its leakproofness.
The operation medium of the utility model is high pure nitrogen or clean dried compressed air.It, can be right using the utility model
Instrument or the close inspection of the advanced promoting the circulation of qi of equipment, displacement and pressure maintaining behaviour can be carried out in the presence of instrument or equipment are not revealed to it by confirming
Make, leakage answers timely measure to be sealed processing to it if it exists, it is ensured that humid air or corrosive gas not can enter its inner cavity
And equipment is caused to corrode or damage.It is regularly detected and filled according to the temperature and humidity of instrument and equipment use environment
Gas maintenance work.Equipment failure rate is reduced while works fine environment is provided, just seems special important to expensive equipment.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
These are merely examples, and the protection scope of the utility model is defined by the appended claims.Those skilled in the art
Member can make numerous variations or be repaired to these embodiments under the premise of without departing substantially from the principles of the present invention and essence
Change, but these change and modification each fall within the protection scope of the utility model.
Claims (6)
1. a kind of airtight test of ultralow pressure and gas substitution detector, which is characterized in that it includes for providing dried and clean
Gas gas cylinder, for pumping the air pump of gas in gas cylinder, for the precision pressure adjuster of regulating gas pressure, for controlling
The input of gas flow and pipeline opening and closing processed ends unit, the precision for monitoring the pressure value in instrument or equipment to be monitored
Pressure gauge, for control piper opening and closing output end unit, the connector for connecting instrument or equipment to be monitored and
For detecting the Hygrothermograph of the temperature and humidity of locating external environment, the gas cylinder, air pump, precision pressure adjuster, input
Cut-off unit, successively pipeline connects output cut-off unit with connector, and the connector is used for defeated with the gas of instrument or equipment
The connection of inbound port interface, the precision pressure gauge are set on the pipeline between input cut-off unit and output cut-off unit.
2. the airtight test of ultralow pressure as described in claim 1 and gas substitution detector, which is characterized in that the input is cut
Stop element is diaphragm valve.
3. the airtight test of ultralow pressure as described in claim 1 and gas substitution detector, which is characterized in that the output is cut
Stop element is diaphragm valve.
4. a kind of airtight test of ultralow pressure and gas substitution detector, which is characterized in that it includes for providing high pure nitrogen
It is bottled, for regulating gas pressure precision pressure adjuster, for control gas flow and pipeline opening and closing input cut-off
Unit, the precision pressure gauge for monitoring the pressure value in instrument or equipment to be monitored, the output being opened and closed for control piper
Cut-off unit, the connector for connecting instrument or equipment to be monitored and the temperature for detecting locating external environment and
The Hygrothermograph of humidity, bottled, the precision pressure adjuster, input cut-off unit, output cut-off unit and connector are successively
Pipeline connection, the connector with the gas entry ports interface of instrument or equipment for connecting, the precision pressure gauge setting
On pipeline between input cut-off unit and output cut-off unit.
5. the airtight test of ultralow pressure as claimed in claim 4 and gas substitution detector, which is characterized in that the input is cut
Stop element is diaphragm valve.
6. the airtight test of ultralow pressure as claimed in claim 4 and gas substitution detector, which is characterized in that the output is cut
Stop element is diaphragm valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821521665.7U CN208736637U (en) | 2018-09-18 | 2018-09-18 | The airtight test of ultralow pressure and gas substitution detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821521665.7U CN208736637U (en) | 2018-09-18 | 2018-09-18 | The airtight test of ultralow pressure and gas substitution detector |
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|---|---|
| CN208736637U true CN208736637U (en) | 2019-04-12 |
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| CN201821521665.7U Active CN208736637U (en) | 2018-09-18 | 2018-09-18 | The airtight test of ultralow pressure and gas substitution detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111141328A (en) * | 2019-12-26 | 2020-05-12 | 兰州空间技术物理研究所 | Atomic clock working environment monitoring device |
-
2018
- 2018-09-18 CN CN201821521665.7U patent/CN208736637U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111141328A (en) * | 2019-12-26 | 2020-05-12 | 兰州空间技术物理研究所 | Atomic clock working environment monitoring device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Duan Yongjin Inventor after: Fang Kecheng Inventor after: Huang Wei Inventor after: Fu Tian Inventor after: Tao Shengli Inventor after: Peng Jiahui Inventor after: Shen Xiaoshi Inventor after: Yang Yeqin Inventor after: Li Haoyu Inventor after: Han Juan Inventor before: Duan Yongjin Inventor before: Fang Kecheng Inventor before: Huang Wei Inventor before: Fu Tian Inventor before: Tao Shengli Inventor before: Peng Jiahui Inventor before: Shen Xiaoshi Inventor before: Yang Yezhen Inventor before: Li Haoyu Inventor before: Han Juan |