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Air supply line for filling valve control

A gas circuit and valve technology, which is applied in the field of gas supply gas circuit controlled by filling valve, can solve the problems of termination of the launch process, failure to achieve target requirements, affecting the launch process, etc., so as to improve stability and solve the problem of single-point failure. Effect

Active Publication Date: 2018-04-13
BEIJING INST OF SPACE LAUNCH TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the gas supply circuit for cryogenic liquid rockets at home and abroad to provide control gas for the opening and closing of the cryogenic filling valve is usually realized by a single two-position three-way solenoid valve, which generally needs to continue to work until -4min before launch, and is a single point, not designed Redundancy, once a failure occurs, it will directly affect the progress of the launch process, or even lead to the termination of the launch process, and cannot achieve the goal of "zero window" launch in the mission

Method used

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  • Air supply line for filling valve control
  • Air supply line for filling valve control
  • Air supply line for filling valve control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] figure 1 Shows the structural schematic diagram of the gas supply circuit for filling valve control provided by Embodiment 1 of the present invention, see figure 1 , The air supply path for filling valve control provided by Embodiment 1 of the present invention includes:

[0019] Air input terminal;

[0020] The two-position three normally closed solenoid valve BD, the first end of the two-position three normally closed solenoid valve BD is connected to the air source input end;

[0021] The first end of the two-position normally closed solenoid valve DF, the first end of the two-position normally closed solenoid valve DF is connected to the air source input, the second end of the two-position normally closed solenoid valve DF and the two-position three normally closed solenoid valve BD Connected at the second end;

[0022] The first two digit three normally open solenoid valve KD1, the first two digit three normally open solenoid valve KD1 and the second end of the two two nor...

Embodiment 2

[0034] figure 2 Shows the structural schematic diagram of the gas supply circuit for filling valve control provided by Embodiment 2 of the present invention, see figure 2 In addition to all the components shown in the first embodiment, the air supply circuit for the filling valve control provided in the second embodiment of the present invention also includes: a pressure sensor BP;

[0035] The pressure sensor BP is arranged between the gas output end and the second end of the first two-digit three normally open solenoid valve KD1.

[0036] Among them, the working condition of the gas supply circuit can be monitored through the pressure sensor BP, for example, the pressure of the opening and closing gas circuit of the filling valve can be monitored remotely, that is, the pressure of the gas output end can be monitored, and the feedback of the pressure sensor BP can be compared with the data after data interpretation. The control strategy is judged to realize the remote control fun...

Embodiment 3

[0040] image 3 Shows the structural schematic diagram of the gas supply circuit for filling valve control provided by Embodiment 3 of the present invention, see image 3 In addition to all the components shown in Embodiment 1, the gas supply circuit for filling valve control provided in Embodiment 3 of the present invention also includes: a first manual shut-off valve JF1 and a second manual shut-off valve JF2;

[0041] The first manual shut-off valve JF1 is arranged between the air source input end and the first end of the first two-digit three-way solenoid valve KD1;

[0042] The second manual shut-off valve JF2 is set at the first end of the first two-position three normally open solenoid valve KD1 and the second end of the two-position two normally closed solenoid valve DF and the second end of the two-position three normally closed solenoid valve BD. Between the connection points.

[0043] Among them, the first manual stop valve JF1 and the second manual stop valve JF2 are unlo...

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Abstract

The invention provides an air supply circuit for filling valve control, comprising: an air source input end; a two-position three normally closed electromagnetic valve, the first end of which is connected to the air source input end; two two position two normally closed electromagnetic valves , the first end is connected to the air source input end, the second end is connected to the second end of the two-position three-normally closed solenoid valve; The second end is connected to the connection point of the second end of the two-two three-normally closed solenoid valve; the gas output end is connected to the second end of the first two-two three-normally open solenoid valve; the second two-two three-normally open solenoid valve is The first end is connected with the third end of the two-position three-normally closed solenoid valve; the air release end is connected with the second end of the second two-position three-position normally open electromagnetic valve. The invention provides a redundant design of the gas supply path, which can solve the single-point failure problem of the low-temperature filling valve of the new-generation launch vehicle and improve the stability of the gas supply path.

Description

Technical field [0001] The invention relates to the field of air supply, and in particular to an air supply circuit for filling valve control. Background technique [0002] At present, the gas supply circuit of cryogenic liquid rockets at home and abroad that provides control gas for the opening and closing of the cryogenic filling valve is usually realized by a single two-position three-way solenoid valve, which generally needs to continue to work until -4 min before shooting, and it is a single point, not designed Redundancy, once a failure occurs, it will directly affect the progress of the launch process, and even lead to the termination of the launch process, failing to achieve the goal of "zero window" launch in the mission. Summary of the invention [0003] The present invention aims to overcome at least one of the above-mentioned shortcomings to provide a gas supply circuit for filling valve control, so as to ensure the stability of gas delivery controlled by the filling v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17C5/02F17C13/04F17C13/02
Inventor 刘茜顾乡张亚民张韧刚王立何燚赵立乔贺建华
Owner BEIJING INST OF SPACE LAUNCH TECH