Differential type isolation diaphragm valve and multi-propellant parallel liquid supply system
An isolation diaphragm, differential type technology, applied in jet propulsion devices, machines/engines, rocket engine devices, etc., can solve the problem that the isolation diaphragm valve cannot be opened reliably, achieve high rupture reliability, and eliminate rupture dispersion. , the effect of improving the efficiency of use
Active Publication Date: 2021-04-16
XIAN AEROSPACE PROPULSION INST
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Problems solved by technology
[0004] The present invention aims to solve the problem that the isolation diaphragm valves at the outlets of multiple propellant storage tanks cannot be reliably opened when the current liquid rocket engine propellant is supplied, and provides a differential type isolation diaphragm valve
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[0032] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings. Apparently, the described embodiments do not limit the present invention.
[0033] Such as figure 1 and figure 2 As shown, a differential isolation diaphragm valve in this embodiment includes a valve body 1 and a differential piston 2 disposed in the valve body 1;
[0034] The top interface 3 at the upper end of the valve body 1 is connected to the outlet of the tank, the lower end of the valve body 1 is provided with an air pressure balance hole 4, and the side of the valve body 1 is provided with a side interface 5;
[0035] The lower part of the differential piston 2 is a cylindrical core, which is used to slide with the valve body 1. The upper part of the differential piston 2 is an I-shaped core structure, and the differential piston 2 is used to offset the 5 side interfaces of ...
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The invention relates to an isolation diaphragm valve, in particular to a differential type isolation diaphragm valve, and aims to solve the problem that isolation diaphragm valves at outlets of a plurality of propellant storage tanks cannot be reliably switched on when a propellant of a liquid rocket engine is supplied. According to the technical scheme, the differential type isolation diaphragm valve comprises a valve body and a differential piston. A top connection opening in the upper end of the valve body is communicated with an outlet of a storage tank , an air pressure balance hole is formed in the lower end of the valve body, and a side connection opening is formed in one side of the valve body. The lower portion of the differential piston is a cylindrical core body, and the upper portion of the differential piston is of an I-shaped core body structure. The I-shaped core body comprises a large frustum, a column core and a small frustum which are coaxially arranged in sequence from bottom to top, a first gap for a medium to flow is formed between the circumferential surface of the large frustum and the side connection opening, a second gap is formed between the circumferential surface of the small frustum and the valve body, and an annular diaphragm is coaxially and fixedly connected to the second gap. An annular groove is formed in the bottom of the annular diaphragm. The invention further provides a multi-propellant parallel liquid supply system.
Description
technical field [0001] The invention relates to an isolation diaphragm valve, in particular to a differential type isolation diaphragm valve and a multi-propellant parallel liquid supply system. Background technique [0002] The isolation diaphragm valve is an important valve assembly in the propellant storage and supply unit of the liquid rocket engine, and is generally installed at the inlet or outlet of the tank. When the isolation diaphragm valve is set at the outlet of the storage tank, the function is to ensure the reliable isolation of the propellant in the storage tank before the system is pressurized. When the system is pressurized, the isolation diaphragm valve is crushed and the propellant is supplied to the downstream system. . [0003] The composition of the propellant includes oxidizer and fuel, etc. The oxidant and fuel of many liquid power systems have respectively adopted two storage tanks, three storage tanks and other parallel liquid supply schemes, but d...
Claims
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Login to View More IPC IPC(8): F02K9/58F02K9/60
Inventor 朱建国宁建华王吉平宋振平闫旭宇李超张程程葛洋
Owner XIAN AEROSPACE PROPULSION INST