A steady-flow multi-stage flow regulating device
A flow regulating device and steady-flow technology, which is applied in the field of main-stage three-stage precise regulation and stable flow regulating device, primary stage and start-up, can solve the problems that the flow regulating device cannot realize three-stage flow regulation, etc., and achieve compact structure, The effect of wide application range and wide adjustment range
Active Publication Date: 2017-11-21
XIAN AEROSPACE PROPULSION INST
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Problems solved by technology
[0003] In order to solve the technical problem that the existing flow regulating device cannot realize the three-stage flow regulation, the present invention provides a three-stage precise regulation and stable flow regulating device of start-up, primary stage and main stage
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[0031] A preferred embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0032] figure 1 Shown is the structure of the steady-flow multi-stage flow regulating device of the present invention, which includes a housing 1A, an inner guide cylinder 1B, a mandrel 1C, a starting screw 2, a gear sleeve 3, a gear shaft 4, a primary sleeve 5, and a primary sleeve Barrel 6, primary window 7, primary window 8, positioning ring 24, primary spring 10, primary control chamber 12, spool valve 13, adjustment spring 14, fluid inlet 15, primary control chamber 16, orifice 18, adjustable flow Orifice 19, fluid outlet 20, primary control port 9, driver 11, primary control port 17.
[0033]The inner guide cylinder 1B is located in the shell 1A, the mandrel 1C is arranged in the inner guide cylinder, the left end of the inner guide cylinder is connected with the shell 1A, and the right end of the inner guide cylinder 1B is provided w...
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The invention discloses a steady flow type multistage flow regulator. The steady flow type multistage flow regulator comprises a housing, a starting screw, a gear sleeve, a gear shaft, a master sleeve, a primary sleeve, a master window, a primary window, a primary control port, a primary spring, a side valve, and adjustment spring, a master control port, a damping hole and an adjustable orifice. In case of a starting state, a starting flow circulates completely through the starting screw; in case of conversion into a primary stage, control pressure is supplied to a primary port, the primary sleeve moves to the left, and a primary flow is formed; and in case of a master stage, control pressure is supplied to a master port, the master sleeve moves to the left, and a master flow is formed. In case of a master state, through adjusting the position of the gear sleeve, the circulation area of the master window is changed, thus the flow is changed, and large-scope high-voltage flow adjustment of a starting stage, the primary stage and the master stage can be realized. According to the invention, through independent arrangement of the master sleeve and the primary sleeve, it is ensured that the conversion into the primary stage and conversion into the master stage are not associated with each other, and accordingly, it is ensured that stage conversion processes are independent and do not interfere with each other.
Description
technical field [0001] The invention relates to a steady-flow multi-stage flow regulating device, in particular to a three-stage precise regulation and stable flow regulating device of start-up, primary stage and main stage. Background technique [0002] The purpose of using a steady-flow multi-stage flow regulating device in a liquid rocket engine is to improve the accuracy of the regulating process and maintain the working conditions, and can also improve the thrust regulating characteristics. The adjustment accuracy and the maintenance accuracy of the working condition parameters of the engine without the adjustment device are relatively low. According to existing estimates, for modern liquid rocket engines, the deviation of parameters may reach ± (7% ~ 15%), or even higher. In order to solve key technologies such as engine start control, turn primary control, turn primary control, thrust stability and regulation, a steady flow multi-stage flow regulating device was de...
Claims
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IPC IPC(8): G05D7/03
CPCG05D7/03
Inventor 程亚威李小明王昕王志永谢宁冯军华雷恒
Owner XIAN AEROSPACE PROPULSION INST