CN108799598A - A kind of time computational methods, solenoid valve controller, solution vacuum system and method - Google Patents
A kind of time computational methods, solenoid valve controller, solution vacuum system and method Download PDFInfo
- Publication number
- CN108799598A CN108799598A CN201810623460.8A CN201810623460A CN108799598A CN 108799598 A CN108799598 A CN 108799598A CN 201810623460 A CN201810623460 A CN 201810623460A CN 108799598 A CN108799598 A CN 108799598A
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- Prior art keywords
- vacuum
- solenoid valve
- solution
- time
- valve controller
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/15—Correlation function computation including computation of convolution operations
Abstract
A kind of solution vacuum system, including solenoid valve controller further include solenoid valve, by solution vacuum equipment, vacuum pump, pipeline and bleeding point；The solenoid valve controller controls opening and the closing of solenoid valve for detecting by the vacuum degree of solution vacuum equipment, and, the energization and power-off of vacuum pump.The pipeline is used for by the connection between solution vacuum equipment and solenoid valve；Solenoid valve is connected to by bleeding point with vacuum pump.It is infrared detector dewar by solution vacuum equipment；Infrared detector dewar is mounted on satellite platform.
Description
Technical field
The present invention relates to a kind of time computational methods, solenoid valve controller, solution vacuum system and methods, are suitable for space and use
Refrigeration type infrared detector Dewar component belongs to satellite technology field.
Background technology
Refrigeration type infrared detector needs to be operated in vacuum low-temperature environment, therefore need to be adopted when work in earth atmosphere environment
With vacuum dewar encapsulating structure, which, due to the deflation of Dewar structure internal material, can reduce Du in space application
Watt internal vacuum, leads to infrared detector dewar assembly static heat load rise, is unfavorable for service life of Dewar component and reliable
Property.Therefore, it is necessary to before the transmitting of infrared remote sensing load, solution vacuum is carried out to infrared detector dewar.At present using two kinds
Mode：One kind is dynamic vacuum mode living, and one kind is artificial solution vacuum.Dynamically vacuum mode living is specially：Infrared detector is shut out
Watt component is by a Dewar bleeding point and atmosphere, before detector Dewar component is freezed, connects vacuum pump and bleeding point,
Dewar component is evacuated to by vacuum pump and requires vacuum degree, which disadvantage is as follows：Dewar component blow-by, be easy to cause inside
The pollution of chip and optical element and fifth wheel；In addition the power-up of infrared detector and the process of rising again after power-off must connect
Vacuum pump comes risk and inconvenience to keep vacuum, to calibration tape.Manually solution vacuum mode is specially：Infrared detector dewar assembly
Manufacture is vacuum sealing state, reserves the interface of solution vacuum, before transmission, by being operated on artificial star, Dewar component solution is true
It is empty.Which disadvantage is as follows：Vacuumizing is solved on star, is introduced manual operation risk, is influenced launcher reliability.
Invention content
The technical problem to be solved by the present invention is to：A kind of time computational methods, electricity are overcome the deficiencies of the prior art and provide
Magnetic valve controller, solution vacuum system and method, the vacuum that Dewar may be implemented is kept and solution vacuum, improves Dewar in space
Life and reliability in prevents Dewar internal contamination, reduces the wind of design, test and the operation of system-level solution vacuum
Danger.
The object of the invention is achieved by the following technical programs：
A kind of time computational methods, the time computational methods are for monitoring vacuum degree, the time computational methods every
Vacuum degree every the primary monitored space of time t detection；The time t is：
T=a × exp [100 × (Py-Ps)]+t0-a
In formula, PyTo be monitored the threshold value pressure in space, PsTo be monitored the actual pressure in space, t0Between minimum detection
Every the time, a is design factor.
A kind of solenoid valve controller, using above-mentioned time computational methods, when time t is less than or equal to minimum detection interval time
t0When, solenoid valve controller output vacuumizes instruction.
A kind of solution vacuum system, including above-mentioned solenoid valve controller further include solenoid valve, by solution vacuum equipment, vacuum pump；
The solenoid valve controller is for controlling by the vacuum degree of solution vacuum equipment, while control solenoid valve beats Push And Release
It closes, and, the energization and power-off of vacuum pump.
Above-mentioned solution vacuum system, when solenoid valve controller receives external solution vacuum demand, solenoid valve controller output
Vacuum demand is solved to solenoid valve and vacuum pump, vacuum pump powers off after receiving solution vacuum demand, after solenoid valve receives solution vacuum demand
Opening makes to be solved vacuum equipment solution vacuum；When solenoid valve controller does not receive external solution vacuum demand, solenoid valve controller
The time t of monitoring vacuum degree is calculated, if time t is less than or equal to minimum detection interval time t0When, solenoid valve controller output is taken out
Vacuum demand to solenoid valve and vacuum pump, solenoid valve receive vacuumize instruction after open, vacuum pump receive vacuumize instruction after lead to
Electricity by solution vacuum equipment to being vacuumized；If time t is more than minimum detection interval time t0When, solenoid valve controller output is protected
Vacuum demand is held to solenoid valve and vacuum pump, solenoid valve is closed after receiving holding vacuum demand, and vacuum pump, which receives, keeps vacuum to refer to
It is powered off after order, vacuum is kept by solution vacuum equipment.
Above-mentioned solution vacuum system, the solution vacuum system further includes pipeline and bleeding point；The pipeline is used for by solution vacuum
Connection between equipment and solenoid valve；Solenoid valve is connected to by bleeding point with vacuum pump.
Above-mentioned solution vacuum system, it is described by solution vacuum equipment be infrared detector dewar.
Above-mentioned solution vacuum system, the infrared detector dewar are mounted on satellite platform.
A kind of solution vacuum method, using above-mentioned solution vacuum system, when solenoid valve controller receives external solution vacuum demand
When, solenoid valve controller exports solution vacuum demand to solenoid valve and vacuum pump, and vacuum pump powers off after receiving solution vacuum demand, electromagnetism
Opening makes to be solved vacuum equipment solution vacuum after valve receives solution vacuum demand；Refer to when solenoid valve controller does not receive external solution vacuum
When enabling, solenoid valve controller calculates the time t of monitoring vacuum degree, if time t is less than or equal to minimum detection interval time t0When, electricity
Magnetic valve controller output vacuumizes instruction to solenoid valve and vacuum pump, solenoid valve receive vacuumize instruction after open, vacuum pump receive
It is powered to after vacuumizing instruction to being vacuumized by solution vacuum equipment；If time t is more than minimum detection interval time t0When, electricity
Magnetic valve controller, which exports, keeps vacuum demand to solenoid valve and vacuum pump, and solenoid valve is closed after receiving holding vacuum demand, vacuum
Pump powers off after receiving holding vacuum demand, and vacuum is kept by solution vacuum equipment.
Above-mentioned solution vacuum method, it is described by solution vacuum equipment be infrared detector dewar.
Above-mentioned solution vacuum system, the infrared detector dewar are mounted on satellite platform.
The present invention has the advantages that compared with the prior art：
(1) the vacuum holding of Dewar may be implemented in the present invention and the remote control of solution vacuum is realized, improves Dewar and is answered in space
Life and reliability in reduces the risk of design, test and the operation of system-level solution vacuum；
(2) time computational methods of the invention calculate detection time interval according to the vacuum degree in monitored space, effectively drop
Low detection number, advantageously reduces system power dissipation, while can ensure the vacuum degree in monitored space；
(3) solenoid valve controller of the invention has preset minimum detection interval time in time interval calculating process, can
To ensure, when the actual pressure in monitored space is close to the threshold value pressure for being monitored space, timely to carry out vacuum pumping,
Avoid the raising detection frequency of blindness；
(4) time computational methods of the invention, solenoid valve controller have preset the threshold value pressure in monitored space, minimum inspection
The parameters such as interval time are surveyed, can be adjusted according to actual needs, applicable range and condition are more flexible.
Description of the drawings
Fig. 1 is the composition schematic diagram of present invention solution vacuum system；
Fig. 2 is the flow chart that present invention solution vacuum system keeps vacuum.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, the implementation below in conjunction with attached drawing to the present invention
Mode is described in further detail.
A kind of solution vacuum system, as shown in Figure 1, including solenoid valve controller, solenoid valve, by solution vacuum equipment, vacuum pump,
Pipeline and bleeding point；Solenoid valve has normally opened and normally closed two states, and the opening and closing of solenoid valve are controlled by solenoid valve controller
Action.
The solenoid valve controller is for controlling by the vacuum degree of solution vacuum equipment, while control solenoid valve beats Push And Release
It closes, and, the energization and power-off of vacuum pump.The pipeline is used for by the connection between solution vacuum equipment and solenoid valve；Solenoid valve is logical
Bleeding point is crossed to be connected to vacuum pump.
In the present embodiment, described by solution vacuum equipment is infrared detector dewar, and the infrared detector dewar is mounted on
On satellite platform.Dewar is assembled in satellite capsule, and vacuum pump is connected to bleeding point, is instructed by being sent to solenoid valve controller,
It realizes the opening of solenoid valve, opens vacuum pump and Dewar is vacuumized, after vacuum degree reaches requirement, by solenoid valve
Controller sends instruction, realizes the closing of solenoid valve, and then vacuum pump powers off.After the vacuum degree of Dewar reaches the retention time,
Solenoid valve controller detects the vacuum degree of Dewar, and when vacuum degree deficiency re-starts the above vacuum step, and vacuum degree satisfaction is wanted
When asking, solenoid valve is kept to close, detect the vacuum degree of Dewar after interval time t again, solution vacuum system keeps the flow of vacuum
As shown in Figure 2.
In the present embodiment, Dewar and channel interior volume are 1L, and it is 10 to select leak rate-10Pa·m3The solenoid valve of/s, once
It is 10 days or more to vacuumize the retention time, can meet the test period of most tests.
A kind of solution vacuum method realizes that Fig. 2 is the flow that present invention solution vacuum system keeps vacuum using solution vacuum system
Figure, when solenoid valve controller receives external solution vacuum demand, solenoid valve controller export solution vacuum demand to solenoid valve with
Vacuum pump, vacuum pump power off after receiving solution vacuum demand, and opening makes to be solved vacuum equipment solution after solenoid valve receives solution vacuum demand
Vacuum.
When solenoid valve controller does not receive external solution vacuum demand, solenoid valve controller calculate monitoring vacuum degree when
Between t.The time t is：
T=a × exp [100 × (Py-Ps)]+t0-a
In formula, PyTo be monitored the threshold value pressure in space, PsTo be monitored the actual pressure in space；A is design factor, by
Maximum detection time determines.The threshold value pressure P in the monitored space in the present embodimentyIt is 10-1Pa, design factor a values are
6.5。
If time t is less than or equal to minimum detection interval time t0When, solenoid valve controller output vacuumizes instruction to electromagnetism
Valve and vacuum pump, solenoid valve receive vacuumize instruction after open, vacuum pump receive vacuumize instruction after be powered to being set by solution vacuum
It is standby to be vacuumized, minimum detection interval time t in the present embodiment0Value is 3 × 104s；If time t is more than minimum detection interval
Time t0When, solenoid valve controller, which exports, keeps vacuum demand to solenoid valve and vacuum pump, and solenoid valve receives holding vacuum demand
After close, vacuum pump receive keep vacuum demand after power off, by solution vacuum equipment keep vacuum.Solenoid valve controller at interval of
The detection of time t is once monitored the vacuum degree in space, then the value of renewal time t, so as to according to the reality in monitored space
Border pressure dynamic adjustment time t, i.e., when the vacuum degree in monitored space is very high, the value of time t is also big, detects vacuum degree every time
Interval time with regard to longer, after the vacuum degree in monitored space declines, the value of time t is smaller, detects every time between vacuum degree
It is shorter every the time, when time t is less than or equal to minimum detection interval time t0When, solenoid valve controller just exports and vacuumizes instruction
Carry out vacuum pumping.
The content that description in the present invention is not described in detail belongs to the known technology of those skilled in the art.
Claims (10)
1. a kind of time computational methods, it is characterised in that：The time computational methods are calculated for monitoring vacuum degree, the time
Vacuum degree of the method at interval of the primary monitored space of time t detection；The time t is：
T=a × exp [100 × (Py-Ps)]+t0-a
In formula, PyTo be monitored the threshold value pressure in space, PsTo be monitored the actual pressure in space, t0For minimum detection interval when
Between, a is design factor.
2. a kind of solenoid valve controller, it is characterised in that：Using the time computational methods of claim 1, when time t is less than or equal to
Minimum detection interval time t0When, solenoid valve controller output vacuumizes instruction.
3. a kind of solution vacuum system, it is characterised in that：Including the solenoid valve controller described in claim 2, further include solenoid valve,
By solution vacuum equipment, vacuum pump；
The solenoid valve controller controls opening and the closing of solenoid valve for controlling by the vacuum degree of solution vacuum equipment,
With the energization and power-off of vacuum pump.
4. a kind of solution vacuum system according to claim 3, it is characterised in that：When solenoid valve controller receives external solution
When vacuum demand, solenoid valve controller exports solution vacuum demand to solenoid valve and vacuum pump, after vacuum pump receives solution vacuum demand
Power-off, opening makes to be solved vacuum equipment solution vacuum after solenoid valve receives solution vacuum demand；When solenoid valve controller does not receive outside
Solution vacuum demand when, solenoid valve controller calculate monitoring vacuum degree time t, if time t be less than or equal to minimum detection interval
Time t0When, solenoid valve controller output vacuumizes instruction to solenoid valve and vacuum pump, solenoid valve receive vacuumize instruction after beat
Open, vacuum pump receive vacuumize instruction after be powered to being vacuumized by solution vacuum equipment；If time t is more than minimum detection interval
Time t0When, solenoid valve controller, which exports, keeps vacuum demand to solenoid valve and vacuum pump, and solenoid valve receives holding vacuum demand
After close, vacuum pump receive keep vacuum demand after power off, by solution vacuum equipment keep vacuum.
5. a kind of solution vacuum system according to claim 3, it is characterised in that：The solution vacuum system further include pipeline and
Bleeding point；The pipeline is used for by the connection between solution vacuum equipment and solenoid valve；Solenoid valve is connected by bleeding point and vacuum pump
It is logical.
6. a kind of solution vacuum system according to claim 3, it is characterised in that：It is described by solution vacuum equipment be infrared acquisition
Device Dewar.
7. a kind of solution vacuum system according to claim 6, it is characterised in that：The infrared detector dewar is mounted on and defends
On star platform.
8. a kind of solution vacuum method, it is characterised in that：Using the solution vacuum system of claim 3, when solenoid valve controller receives
When the solution vacuum demand of outside, solenoid valve controller exports solution vacuum demand to solenoid valve and vacuum pump, and it is true that vacuum pump receives solution
It is powered off after do-nothing instruction, opening makes to be solved vacuum equipment solution vacuum after solenoid valve receives solution vacuum demand；When solenoid valve controller not
When receiving external solution vacuum demand, solenoid valve controller calculates the time t of monitoring vacuum degree, if time t is less than or equal to minimum
Assay intervals time t0When, solenoid valve controller output vacuumizes instruction to solenoid valve and vacuum pump, and solenoid valve, which receives, to be vacuumized
Opened after instruction, vacuum pump receive vacuumize instruction after be powered to being vacuumized by solution vacuum equipment；If time t is more than minimum
Assay intervals time t0When, solenoid valve controller, which exports, keeps vacuum demand to solenoid valve and vacuum pump, and solenoid valve receives holding
It is closed after vacuum demand, vacuum pump powers off after receiving holding vacuum demand, and vacuum is kept by solution vacuum equipment.
9. a kind of solution vacuum method according to claim 8, it is characterised in that：It is described by solution vacuum equipment be infrared acquisition
Device Dewar.
10. a kind of solution vacuum method according to claim 9, it is characterised in that：The infrared detector dewar is mounted on
On satellite platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810623460.8A CN108799598B (en) | 2018-06-15 | 2018-06-15 | Time calculation method, electromagnetic valve controller, vacuum release system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810623460.8A CN108799598B (en) | 2018-06-15 | 2018-06-15 | Time calculation method, electromagnetic valve controller, vacuum release system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108799598A true CN108799598A (en) | 2018-11-13 |
| CN108799598B CN108799598B (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810623460.8A Active CN108799598B (en) | 2018-06-15 | 2018-06-15 | Time calculation method, electromagnetic valve controller, vacuum release system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236616A (en) * | 2018-11-29 | 2019-01-18 | 东莞市维健维康科技有限公司 | A kind of vacuum system and control method |
| CN114383355A (en) * | 2020-10-19 | 2022-04-22 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
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| CN103234299A (en) * | 2013-04-03 | 2013-08-07 | 贾磊 | Method for increasing and maintaining vacuum degree of vacuum chamber |
| CN203363353U (en) * | 2012-02-29 | 2013-12-25 | 费希尔控制国际公司 | Process control valve assembly |
| CN106037385A (en) * | 2016-07-13 | 2016-10-26 | 惠州市盈毅电机有限公司 | Intelligent vacuum freshness-retaining cup |
| CN206387588U (en) * | 2016-12-02 | 2017-08-08 | 大连海事大学 | A kind of leaking stoppage experiment system of LNG/NG pipeline leakages |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009042194A (en) * | 2007-08-13 | 2009-02-26 | Shimadzu Corp | Non-use time storage method of dewer vessel, and dewer vessel |
| CN203363353U (en) * | 2012-02-29 | 2013-12-25 | 费希尔控制国际公司 | Process control valve assembly |
| CN103234299A (en) * | 2013-04-03 | 2013-08-07 | 贾磊 | Method for increasing and maintaining vacuum degree of vacuum chamber |
| CN106037385A (en) * | 2016-07-13 | 2016-10-26 | 惠州市盈毅电机有限公司 | Intelligent vacuum freshness-retaining cup |
| CN206387588U (en) * | 2016-12-02 | 2017-08-08 | 大连海事大学 | A kind of leaking stoppage experiment system of LNG/NG pipeline leakages |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236616A (en) * | 2018-11-29 | 2019-01-18 | 东莞市维健维康科技有限公司 | A kind of vacuum system and control method |
| CN114383355A (en) * | 2020-10-19 | 2022-04-22 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| CN114383355B (en) * | 2020-10-19 | 2023-06-16 | 海信冰箱有限公司 | Refrigerator with a refrigerator body |
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| CN108799598B (en) | 2020-02-14 |
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