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Active Control System and Control Method for "Zero Evaporation" Storage of Cryogenic Propellants

An active control system and low-temperature propellant technology, applied in the direction of control/regulation system, non-electric variable control, and simultaneous control of multiple variables, to achieve the effect of ensuring normal operation, significant effect, and low cost

Active Publication Date: 2020-06-09
CHINA ACAD OF LAUNCH VEHICLE TECH
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Problems solved by technology

However, cryogenic propellants have a low boiling point and are easy to evaporate when heated. In future deep space exploration projects, cryogenic storage tanks will operate in orbit for several days or even years. How to effectively control the evaporation of cryogenic propellants has become an important issue in the application of cryogenic propellants in orbit. core technical problems

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  • Active Control System and Control Method for "Zero Evaporation" Storage of Cryogenic Propellants
  • Active Control System and Control Method for "Zero Evaporation" Storage of Cryogenic Propellants
  • Active Control System and Control Method for "Zero Evaporation" Storage of Cryogenic Propellants

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Embodiment Construction

[0035] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0036] Such as figure 1Shown is a schematic diagram of the composition of the active control system for "zero evaporation" storage of low-temperature propellants of the present invention. It can be seen from the figure that the active control system of the present invention includes liquid nitrogen storage and transportation system I, data acquisition system II, refrigeration system III and liquid nitrogen evaporation Control platform IV, in which: liquid nitrogen storage and transportation system I is used to store liquid nitrogen and transport liquid nitrogen to liquid nitrogen evaporation control test platform IV; data acquisition system II is used to monitor the pressure in liquid nitrogen evaporation control platform IV , temperature, liquid level and flow data; the refrigeration system III is used to generate cooling capacity and transport...

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Abstract

The invention relates to an active control system and a control method for realizing zero evaporation storage of a cryogenic propellant. The technical difficulties of cryogenic propellant zero evaporation storage are broken through, an active refrigeration technology and a passive anti-thermal insulation technology are combined, and a method capable of realizing zero evaporation storage of a liquid nitrogen working fluid is put forward and verified. On the basis of the original cryogenic propellant storage tank, a realization system and a method for cryogenic working fluid quick pressure dropand zero evaporation control are put forward based on a refrigerator, liquid nitrogen zero evaporation storage is realized, and the technical difficulty that some of the mass is bound to be lost due to evaporation of the existing cryogenic propellant storage is solved. Through adopting a high-efficiency cold head heat exchanger design, a heater power and layout design, an orthogonal test optimal design and the like, liquid nitrogen zero evaporation storage is realized, and as a necessary and low-cost cryogenic refrigeration system high-efficiency heat discharge technology is adopted, normal operation of the system is ensured.

Description

technical field [0001] The invention relates to an active control system and a control method for "zero evaporation" storage of low-temperature propellants, belonging to the field of long-term on-orbit storage and management of low-temperature propellants. Background technique [0002] Cryogenic propellants have the characteristics of high specific impulse, non-toxic and non-polluting. Low-temperature propellants represented by liquid hydrogen / liquid oxygen are considered to be the most economical and efficient chemical propellants for entering space and orbital transfer, and have been widely used in domestic and foreign launch vehicles and upper stages. , Mars exploration and the preferred propellant for longer-distance deep space exploration. However, cryogenic propellants have a low boiling point and are easy to evaporate when heated. In future deep space exploration projects, cryogenic storage tanks will operate in orbit for several days or even years. How to effectivel...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D27/02G01D21/02
CPCG01D21/02G05D27/02
Inventor 贲勋刘欣张少华刘海飞张晓屿周振君潘瑶
Owner CHINA ACAD OF LAUNCH VEHICLE TECH
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