CN105665374B - Engine blows down gas circuit - Google Patents
Engine blows down gas circuit Download PDFInfo
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- CN105665374B CN105665374B CN201610008151.0A CN201610008151A CN105665374B CN 105665374 B CN105665374 B CN 105665374B CN 201610008151 A CN201610008151 A CN 201610008151A CN 105665374 B CN105665374 B CN 105665374B
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- solenoid valve
- valve
- way solenoid
- normally opened
- bit triplet
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2205/00—Details of machines or methods for cleaning by the use of gas or air flow
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention provides a kind of engines to blow down gas circuit, including：High-pressure air source input terminal；Pressure reducing valve；First normally opened two-bit triplet solenoid valve；First 2/2-way solenoid valve；Second 2/2-way solenoid valve；Third 2/2-way solenoid valve；4th 2/2-way solenoid valve；First restriction orifice；Check valve；Second normally opened two-bit triplet solenoid valve；Supply output end；First deflation end；Low-pressure gas source input terminal；5th 2/2-way solenoid valve；Second restriction orifice；6th 2/2-way solenoid valve；Third restriction orifice.The engine provided through the invention blows down gas circuit, high-pressure air source input terminal and low-pressure gas source input terminal are set in gas circuit, to meet, high pressure blows down gas supply and low pressure blows down gas supply, it is easily achieved, again since gas circuit uses Redundancy Design, it can be when there is single failure in gas supply valve member, it is ensured that realize the air supply requirement that blows down for airway dysfunction and can realize high reliability.
Description
Technical field
The present invention relates to rocket ground gas supply fields more particularly to a kind of engine to blow down gas circuit.
Background technology
Engine blow down gas circuit be applied to rocket ground air supply system, using high pressure gas as medium, be cryogenic engine into
Row blows down work.General cryogenic engine needs to carry out a series of preparations before work, wherein being carried out using high pressure gas
Blowing is to ensure an important content of its normal work.However existing blowing gas circuit can then cause low once breaking down
Warm engine problem even results in the termination of rocket launching.
Invention content
The present invention is directed at least overcome one of drawbacks described above to provide a kind of engine blowing gas circuit, gas circuit of the invention uses
Redundancy Design realizes highly reliable air supply requirement.
In order to achieve the above objectives, technical scheme of the present invention is specifically realized in：
One aspect of the present invention provides a kind of engine blowing gas circuit, including：
High-pressure air source input terminal；
Pressure reducing valve, the first end of the pressure reducing valve are connect with the high-pressure air source input terminal；
First normally opened two-bit triplet solenoid valve, first end and the pressure reducing valve of the first normally opened two-bit triplet solenoid valve
Second end connection；
First 2/2-way solenoid valve, the first end of the first 2/2-way solenoid valve with described first normally opened two three
The second end of three-way electromagnetic valve connects；
Second 2/2-way solenoid valve, the first end of the second 2/2-way solenoid valve with described first normally opened two three
The second end of three-way electromagnetic valve connects；
Third 2/2-way solenoid valve, the first end of the third 2/2-way solenoid valve with described first normally opened two three
The second end of three-way electromagnetic valve connects；
4th 2/2-way solenoid valve, the first end of the 4th 2/2-way solenoid valve with described first normally opened two three
The second end of three-way electromagnetic valve connects
First restriction orifice, the second end of the first end of first restriction orifice and the third 2/2-way solenoid valve
It is connected with the second end of the 4th 2/2-way solenoid valve；
Check valve, the first end of the check valve connect the second end of first restriction orifice；
Second normally opened two-bit triplet solenoid valve, the first end of the second normally opened two-bit triplet solenoid valve with described first liang
The second end connection of check valve described in the position second end of two three-way electromagnetic valves, the second end of the second 2/2-way solenoid valve；
Output end is supplied, the gas supply output end is connect with the second end of the described second normally opened two-bit triplet solenoid valve；
First deflation end, first deflation end are connect with the third end of the described second normally opened two-bit triplet solenoid valve；
Low-pressure gas source input terminal；
5th 2/2-way solenoid valve, first end and the low-pressure gas source input terminal of the 5th 2/2-way solenoid valve
Connection；
Second restriction orifice, the second end of the first end of second restriction orifice and the 5th 2/2-way solenoid valve
Connection, it is the first end of the second end of second restriction orifice and the first 2/2-way solenoid valve, the second two two described
The first of the first end of three-way electromagnetic valve, the first end of the third 2/2-way solenoid valve and the 4th 2/2-way solenoid valve
End connection；
6th 2/2-way solenoid valve, first end and the low-pressure gas source input terminal of the 6th 2/2-way solenoid valve
It is connected with the first end of the 5th 2/2-way solenoid valve；
Third restriction orifice, the second end of the first end of the third restriction orifice and the 6th 2/2-way solenoid valve
Connection, the second end of the third restriction orifice are connect with the first end of the described second normally opened two-bit triplet solenoid valve.
In addition, gas circuit further includes：
First manual valve, the first manual valve be connected to the described first normally opened two-bit triplet solenoid valve second end and
Between the first end of the second normally opened two-bit triplet solenoid valve；And/or
Second hand-operated valve, second hand-operated valve be connected to the described first normally opened two-bit triplet solenoid valve second end and
Between the first end of first restriction orifice.
In addition, gas circuit further includes：
Sensor, the sensor are connected to the first end of the described first normally opened two-bit triplet solenoid valve and the pressure reducing valve
Second end between.
In addition, gas circuit further includes：
Second deflation end；
Third hand-operated valve, the third hand-operated valve be connected to the described first normally opened two-bit triplet solenoid valve second end and
Between second deflation end.
As seen from the above technical solution provided by the invention, the engine provided through the invention blows down gas circuit,
High-pressure air source input terminal and low-pressure gas source input terminal are set in gas circuit, gas supply and low pressure blowing gas supply are blown down to meet high pressure,
It is easily achieved, and since gas circuit uses Redundancy Design, it can be when there is single failure in gas supply valve member, it is ensured that realize and blow down gas supply
Function and the air supply requirement that can realize high reliability.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the structural schematic diagram that the engine that the embodiment of the present invention 1 provides blows down gas circuit；
Fig. 2 is the structural schematic diagram that the engine that the embodiment of the present invention 2 provides blows down gas circuit；
Fig. 3 is the structural schematic diagram that the engine that the embodiment of the present invention 3 provides blows down gas circuit；
Fig. 4 is the structural schematic diagram that the engine that the embodiment of the present invention 4 provides blows down gas circuit.
Specific implementation mode
Detailed description of embodiments of the present invention below in conjunction with the accompanying drawings.
Embodiment 1
The engine that the embodiment of the present invention 1 provides blows down gas circuit and is applied in the air supply system of ground, as shown in Figure 1, this hair
The engine that bright embodiment 1 provides blows down gas circuit：
High-pressure air source input terminal；
The first end of pressure reducing valve JQ, pressure reducing valve JQ are connect with high-pressure air source input terminal；
The first end of first normally opened two-bit triplet solenoid valve DJQ, the first normally opened two-bit triplet solenoid valve DJQ and pressure reducing valve JQ
Second end connection；
The first end of first 2/2-way solenoid valve CDA, the first 2/2-way solenoid valve CDA and the first normally opened two-bit triplet
The second end of solenoid valve DJQ connects；
Second 2/2-way solenoid valve BCDA, the first end of the second 2/2-way solenoid valve BCDA with first normally opened two three
The second end of three-way electromagnetic valve DJQ connects；
Third 2/2-way solenoid valve CD, the first end of third 2/2-way solenoid valve CD and the first normally opened two-bit triplet electricity
The second end of magnet valve DJQ connects；
The first end of 4th 2/2-way solenoid valve BCD, the 4th 2/2-way solenoid valve BCD and the first normally opened two-bit triplet
The second end of solenoid valve DJQ connects；
The second end of the first end and third 2/2-way solenoid valve CD of first restriction orifice XD1, the first restriction orifice XD1
It is connected with the second end of the 4th 2/2-way solenoid valve BCD；
The first end of check valve ZF, check valve ZF connect the second end of the first restriction orifice XD1；
Second normally opened two-bit triplet solenoid valve FD, the first end of the second normally opened two-bit triplet solenoid valve DJQ with the first two
The second end of two three-way electromagnetic valve CDA, the second end of the second 2/2-way solenoid valve BCDA are connected with the second end of check valve ZF；
Output end is supplied, gas supply output end is connect with the second end of the second normally opened two-bit triplet solenoid valve FD；
First deflation end, the first deflation end are connect with the third end of the second normally opened two-bit triplet solenoid valve FD；
Low-pressure gas source input terminal；
The first end of 5th 2/2-way solenoid valve CDAB, the 5th 2/2-way solenoid valve CDAB and low-pressure gas source input terminal
Connection；
Second restriction orifice XD2, the first end of the second restriction orifice XD2 and the second of the 5th 2/2-way solenoid valve CDAB
End connection, the second end of the second restriction orifice XD2 and the first end of the first 2/2-way solenoid valve CDA, the second 2/2-way are electric
The first end of the first end of magnet valve BCDA, the first end and the 4th 2/2-way solenoid valve BCD of third 2/2-way solenoid valve CD
Connection；
The first end of 6th 2/2-way solenoid valve CDB, the 6th 2/2-way solenoid valve CDB and low-pressure gas source input terminal and
The first end of 5th 2/2-way solenoid valve CDAB connects；
Third restriction orifice XD3, the first end of third restriction orifice XD3 and the second of the 6th 2/2-way solenoid valve CDB
End connection, the second end of third restriction orifice XD3 are connect with the first end of the second normally opened two-bit triplet solenoid valve FD.
It can be seen that the engine that provides through the invention blows down gas circuit, be arranged in gas circuit high-pressure air source input terminal and
Low-pressure gas source input terminal, to meet, high pressure blows down gas supply and low pressure blows down gas supply, it is easy to accomplish, and since gas circuit uses redundancy
Design, can be when there is single failure in gas supply valve member, it is ensured that realize the gas supply that blows down for airway dysfunction and can realize high reliability
It is required that.
Specifically, engine provided by the invention blows down gas circuit, two air sources are provided with, high-pressure air source can blow for high pressure
Except gas supply is used, low-pressure gas source can be that low pressure blows down gas supply, and provides redundancy gas supply.
High-pressure air source, can be by the first 2/2-way solenoid valve CDA and the second 2/2-way electricity after pressure reducing valve JQ decompressions
Magnet valve BCDA controls realize that high pressure blows down gas supply, while the first 2/2-way solenoid valve CDA and the second 2/2-way solenoid valve
BCDA Parallel Designs are mutually redundant design, realize backup functionality.
High-pressure air source, can be by third 2/2-way solenoid valve CD and the 4th 2/2-way electromagnetism after pressure reducing valve JQ decompressions
Valve BCD realizes that low pressure blows down gas supply by the first restriction orifice XD1, at this point, third 2/2-way solenoid valve CD and the 4th simultaneously
2/2-way solenoid valve BCD Parallel Designs are mutually redundant design, realize backup functionality.In addition, the first restriction orifice XD1 it
Afterwards, a check valve ZF is also set up, real by the first 2/2-way solenoid valve CDA and the second 2/2-way solenoid valve BCDA controls
When existing high pressure blows down gas supply, also avoid gas backflow to third 2/2-way solenoid valve CD and the 4th 2/2-way solenoid valve BCD.
Low-pressure gas source input terminal can be used as standby guarantor's road air source, pass through the second restriction orifice XD2 and third restriction orifice XD3
Realize that gas supply is blown down in high-low pressure backup, and real by the 5th 2/2-way solenoid valve CDAB and the 6th 2/2-way solenoid valve CDB
The control now backed up.
When gas circuit breaks down, such as the first 2/2-way solenoid valve CDA, the second 2/2-way solenoid valve BCDA,
There is solenoid valve failure when cannot close in three 2/2-way solenoid valve CD and the 4th 2/2-way solenoid valve BCD, it can be with
The gas supply of gas circuit is closed by the first normally opened normally opened two-bit triplet solenoid valve FD of two-bit triplet solenoid valve DJQ and/or second.Separately
Outside, when stopping blowing down gas supply, the second normally opened two-bit triplet solenoid valves of FD can also be given to power up, is put rapidly by the first deflation end
Fall to blow down the backend gas in pipeline.
As the optional embodiment of the present invention, realize that high pressure blows down normal gas supply flow and is：
It, can be with by adjusting first throttle valve JL1 and second throttle JL2 after being supplied by high-pressure air source input terminal
Pressure reducing valve JQ, is adjusted to the required value of blowoff pressure, by giving the first 2/2-way solenoid valve CDA by the registration for observing instrument P
Realize that high pressure blows down gas supply with the second 2/2-way solenoid valve BCDA power-up.
As the optional embodiment of the present invention, realize that low pressure blows down normal gas supply flow and is：
After being supplied by high-pressure air source input terminal, by adjusting first throttle valve JL1 and second throttle JL2, Ke Yiguan
Pressure reducing valve JQ is adjusted to the required value of blowoff pressure by the registration for examining instrument P, by giving third 2/2-way solenoid valve CD and
Four 2/2-way solenoid valve BCD power-up realize that low pressure blows down gas supply.
As the optional embodiment of the present invention, realize that high pressure blows down redundancy gas supply flow and is：
After pressure reducing valve JQ breaks down, to the first normally opened two-bit triplet solenoid valve DJQ power-up, this road gas circuit is isolated；Together
When, to the 5th 2/2-way solenoid valve CDAB power-up, the first 2/2-way solenoid valve CDA, the second 2/2-way electromagnetism are given later
Valve BCDA power-up, realizes that high pressure blows down gas supply.
As the optional embodiment of the present invention, realize that low pressure blows down redundancy gas supply flow and is：
After pressure reducing valve JQ breaks down, to the first normally opened two-bit triplet solenoid valve DJQ power-up, this road gas circuit is isolated；Together
When, to the 6th 2/2-way solenoid valve CDB power-up, realize that low pressure blows down gas supply by third restriction orifice XD3.
As the optional embodiment of the present invention, realize that blowing down more than gas supply flow is：
After stopping, which is blown down, to be required to send out, if cannot be closed after blowing down solenoid valve power-off, or pass through rear end sensor
After (mating by rear end equipment, this gas circuit does not match) monitors failure, to the second normally opened two-bit triplet solenoid valve FD power-up, blow down
Gas is ended, and is realized and is stopped gas supply.
As the optional embodiment of the present invention, realize that swept-off gases' deflation flow is：
When blowing down stopping, if rear end equipment requires to deflate as early as possible, at this point, while blowing down solenoid valve power-off, giving
Second normally opened two-bit triplet solenoid valve FD power-up, realizes the deflation of the second normally opened rear ends two-bit triplet solenoid valve FD pipeline.
Engine provided in an embodiment of the present invention is blown down in gas circuit, can be connected by pipeline between each component
It connects, which can be to be directly connected to, or be indirectly connected with, it may be a plurality of be spliced that pipeline, which can be one,.
Embodiment 2
Fig. 2 is the structural schematic diagram that the engine that the embodiment of the present invention 2 provides blows down gas circuit, and referring to Fig. 2, the present invention is implemented
The engine that example 2 provides is blown down gas circuit other than including all components shown in embodiment 1, further includes：
First manual valve JF01, first manual valve JF01 are connected to the second end of the first normally opened two-bit triplet solenoid valve DJQ
And second normally opened two-bit triplet solenoid valve FD first end between；And/or
Second hand-operated valve JF02, the second hand-operated valve JF02 is connected to the second end of the first normally opened two-bit triplet solenoid valve DJQ
And first restriction orifice XD1 first end between.
As the optional embodiment of the present invention, when realizing that high pressure blows down normal gas supply flow, in addition to that can carry out
Outside Electronic control, it can also realize that high pressure manual blows down gas supply by first manual valve JF01.
As the optional embodiment of the present invention, when realizing that low pressure blows down normal gas supply flow, in addition to that can carry out
Outside Electronic control, it can also realize that manual low pressure blows down gas supply by the second hand-operated valve JF02.
Embodiment 3
Fig. 3 is the structural schematic diagram that the engine that the embodiment of the present invention 3 provides blows down gas circuit, and referring to Fig. 3, the present invention is implemented
The engine that example 3 provides is blown down gas circuit other than including all components shown in embodiment 1, or in addition to including 1 He of embodiment
Outside all components shown in embodiment 2, further include：
Sensor BP, sensor BP are connected to the first end of the first normally opened two-bit triplet solenoid valve DJQ with pressure reducing valve JQ's
Between second end.
As the optional embodiment of the present invention, realize that high pressure blows down redundancy gas supply flow and is：
After can monitoring that pressure reducing valve JQ breaks down by sensor BP, the first normally opened two-bit triplet solenoid valve DJQ is given
Power-up, is isolated this road gas circuit；Meanwhile to the 5th 2/2-way solenoid valve CDAB power-up, the first 2/2-way solenoid valve is given later
CDA, the second 2/2-way solenoid valve BCDA power-up, realize that high pressure blows down gas supply.
As the optional embodiment of the present invention, realize that low pressure blows down redundancy gas supply flow and is：
After can monitoring that pressure reducing valve JQ breaks down by sensor BP, the first normally opened two-bit triplet solenoid valve DJQ is given
Power-up, is isolated this road gas circuit；Meanwhile to the 6th 2/2-way solenoid valve CDB power-up, third 2/2-way solenoid valve CD is given later
With the 4th 2/2-way solenoid valve BCD power-up, realize that low pressure blows down gas supply.
It can be seen that the status monitoring of pressure reducing valve JQ can be carried out by sensor, full automation is realized, be not necessarily to personnel
Purpose on duty.
Embodiment 4
Fig. 4 is the structural schematic diagram that the engine that the embodiment of the present invention 4 provides blows down gas circuit, and referring to Fig. 3, the present invention is implemented
The engine that example 3 provides is blown down gas circuit other than including all components shown in embodiment 1, or in addition to including 1 He of embodiment
Outside all components shown in embodiment 2, either other than all components including embodiment 1 and embodiment 3 or in addition to including
Outside all components of embodiment 1, embodiment 2 and embodiment 3, further include：
Second deflation end；
Third hand-operated valve JF03, third hand-operated valve JF03 are connected to the second end of the first normally opened two-bit triplet solenoid valve DJQ
And second between deflation end.
It can be seen that the deflation of pipeline may be implemented by third hand-operated valve.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss suitable
Sequence, include according to involved function by it is basic simultaneously in the way of or in the opposite order, to execute function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Those skilled in the art are appreciated that realize all or part of step that above-described embodiment method carries
Suddenly it is that relevant hardware can be instructed to complete by program, the program can be stored in a kind of computer-readable storage medium
In matter, which includes the steps that one or a combination set of embodiment of the method when being executed.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiments or example in can be combined in any suitable manner.
Above embodiment is only that the preferred embodiment of the present invention is described, and is not carried out to the scope of the present invention
It limits, under the premise of not departing from design spirit of the present invention, this field ordinary engineering and technical personnel is to technical scheme of the present invention
The various modifications made and improvement should all be fallen into the protection domain of claims of the present invention determination.
Claims (4)
1. a kind of engine blows down gas circuit, including：High-pressure air source input terminal, low-pressure gas source input terminal, gas supply output end and the
One deflation end；
It is characterized in that, further including：
Pressure reducing valve, the first end of the pressure reducing valve are connect with the high-pressure air source input terminal；
First normally opened two-bit triplet solenoid valve, the of the first end of the first normally opened two-bit triplet solenoid valve and the pressure reducing valve
Two ends connect；
First 2/2-way solenoid valve, the first end of the first 2/2-way solenoid valve and the described first normally opened two-bit triplet electricity
The second end of magnet valve connects；
Second 2/2-way solenoid valve, the first end of the second 2/2-way solenoid valve and the described first normally opened two-bit triplet electricity
The second end of magnet valve connects；
Third 2/2-way solenoid valve, the first end of the third 2/2-way solenoid valve and the described first normally opened two-bit triplet electricity
The second end of magnet valve connects；
4th 2/2-way solenoid valve, the first end of the 4th 2/2-way solenoid valve and the described first normally opened two-bit triplet electricity
The second end of magnet valve connects；
First restriction orifice, second end and institute of the first end of first restriction orifice with the third 2/2-way solenoid valve
State the second end connection of the 4th 2/2-way solenoid valve；
Check valve, the first end of the check valve connect the second end of first restriction orifice；
Second normally opened two-bit triplet solenoid valve, the first end of the second normally opened two-bit triplet solenoid valve with described the first two two
The second end of three-way electromagnetic valve, the second end of the second 2/2-way solenoid valve are connected with the second end of the check valve；
The gas supply output end is connect with the second end of the described second normally opened two-bit triplet solenoid valve；
First deflation end is connect with the third end of the described second normally opened two-bit triplet solenoid valve；
5th 2/2-way solenoid valve, first end and the low-pressure gas source input terminal of the 5th 2/2-way solenoid valve connect
It connects；
Second restriction orifice, the first end of second restriction orifice and the second end of the 5th 2/2-way solenoid valve connect
It connects, the first end of the second end of second restriction orifice and the first 2/2-way solenoid valve, second 2/2-way
The first end of the first end of solenoid valve, the first end and the 4th 2/2-way solenoid valve of the third 2/2-way solenoid valve
Connection；
6th 2/2-way solenoid valve, first end and the low-pressure gas source input terminal and the institute of the 6th 2/2-way solenoid valve
State the first end connection of the 5th 2/2-way solenoid valve；
Third restriction orifice, the first end of the third restriction orifice and the second end of the 6th 2/2-way solenoid valve connect
It connects, the second end of the third restriction orifice is connect with the first end of the described second normally opened two-bit triplet solenoid valve.
2. gas circuit according to claim 1, which is characterized in that further include：
First manual valve, the first manual valve are connected to the second end of the described first normally opened two-bit triplet solenoid valve and described
Between the first end of second normally opened two-bit triplet solenoid valve；And/or
Second hand-operated valve, second hand-operated valve are connected to the second end of the described first normally opened two-bit triplet solenoid valve and described
Between the first end of first restriction orifice.
3. gas circuit according to claim 1 or 2, which is characterized in that further include：
Sensor, the sensor are connected to the of the first end of the described first normally opened two-bit triplet solenoid valve and the pressure reducing valve
Between two ends.
4. gas circuit according to claim 1 or 2, which is characterized in that further include：
Second deflation end；
Third hand-operated valve, the third hand-operated valve are connected to the second end of the described first normally opened two-bit triplet solenoid valve and described
Between second deflation end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610008151.0A CN105665374B (en) | 2016-01-06 | 2016-01-06 | Engine blows down gas circuit |
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| CN201610008151.0A CN105665374B (en) | 2016-01-06 | 2016-01-06 | Engine blows down gas circuit |
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| CN105665374A CN105665374A (en) | 2016-06-15 |
| CN105665374B true CN105665374B (en) | 2018-08-21 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630320B (en) * | 2018-10-22 | 2020-02-18 | 陕西蓝箭航天技术有限公司 | Blow-off system and blow-off adapter for cryogenic liquid rocket engines |
| CN109989827B (en) * | 2019-04-11 | 2020-06-02 | 北京航天发射技术研究所 | Blowing gas circuit of engine gas supply system and control method |
| CN113002808A (en) * | 2021-02-07 | 2021-06-22 | 上海宇航***工程研究所 | Rocket blowing centralized gas supply system |
| CN114280228A (en) * | 2021-11-15 | 2022-04-05 | 北京航天发射技术研究所 | Gas source excess blowing inspection device |
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| KR101312712B1 (en) * | 2012-03-08 | 2013-10-01 | 전북에너지서비스주식회사 | Device for removing chip in gas pipe |
| CN203771031U (en) * | 2014-03-24 | 2014-08-13 | 北京航天发射技术研究所 | Backup-redundancy pressure reduction gas supply loop |
| CN104913202A (en) * | 2015-04-29 | 2015-09-16 | 北京航天发射技术研究所 | Redundancy control device and control method for gas circuit control |
| CN105114806A (en) * | 2015-09-17 | 2015-12-02 | 捷锐企业(上海)有限公司 | Double-side high-pressure gas cylinder gas supply switching system |
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| CN105665374A (en) | 2016-06-15 |
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