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High-and-small flow classifying throttling mechanism capable of changing flow resistance within large range

A throttling mechanism and a wide range of technology, applied in the direction of valve details, mechanical equipment, engine components, etc., can solve the problems of engine supply flow that cannot be adjusted according to demand, high energy consumption, etc., to achieve perfect design scheme, large flow resistance change range, Effect of improving design reliability

Active Publication Date: 2013-04-10
NO 11 INST OF NO 6 ACADEMY OF CHINA AEROSPACE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem that the existing engine supply flow cannot be adjusted according to the demand and the energy consumption is high, the present invention provides a large and small flow rate grading throttling mechanism with variable flow resistance in a wide range, which can not only realize fast switching between large and small flow rates, but also realize large Throttle mechanism with variable flow resistance

Method used

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  • High-and-small flow classifying throttling mechanism capable of changing flow resistance within large range
  • High-and-small flow classifying throttling mechanism capable of changing flow resistance within large range
  • High-and-small flow classifying throttling mechanism capable of changing flow resistance within large range

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Embodiment Construction

[0016] The large and small flow rate grading and throttling mechanism with variable flow resistance in a wide range includes a housing 1, a motor assembly fixed on the housing 1, an inlet guide sleeve 2 arranged at the entrance of the housing, a small flow adjustment assembly, an electric adjustment assembly, and The rack sleeve 3 set on the inlet guide sleeve, the inner cavity of the inlet guide sleeve is the fluid inlet flow channel 4, the motor assembly includes the motor and the gear shaft 11 connected to the output shaft of the motor, the gear shaft meshes with the rack sleeve, and the motor The rotation drives the rack sleeve to move along the inlet guide tube through the gear shaft.

[0017] The small flow adjustment assembly includes a valve core 5, a control gas joint 6, a spring 7 and an outlet guide sleeve 8. The valve core 5 includes a small flow guide seat 51 and a piston rod 52 that are fixedly connected in sequence. The small flow guide seat 51 is connected to th...

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Abstract

The invention relates to a high-and-small flow classifying throttling mechanism capable of changing flow resistance within a large range. The mechanism comprises a housing, a motor component fixedly arranged on the housing, an inlet flow guide cover arranged at an inlet of the housing, a small-flow adjusting component, an electrical adjusting component and a rack cover covering the inlet flow guide cover, wherein an inner cavity of the inlet flow guide cover is a flow inlet flow way. According to the mechanism, a small-flow hole and a high-flow hole are respectively designed, so that the high-and-small flow classifying, and the quick switching can be realized. When an engine starts, in order to avoid the ignition shock of a thrust chamber, the less flow is needed, and the high-flow status is needed to be quickly switched. The mechanism is provided with a spring and a gas control chamber, so that the high flow and the small flow can be quickly switched after the control chamber is deflated, and the design reliability of a product can be improved.

Description

technical field [0001] The invention relates to a large and small flow rate grading throttling mechanism with variable flow resistance in a large range, which is an executive mechanism of a propellant management system applied to an engine, in particular a mixing ratio adjustment mechanism on the engine. Background technique [0002] The propellants of the existing engines are always supplied at one flow rate during the supply process, which cannot ensure that all kinds of propellants are exhausted at the same time, and cannot be adjusted according to the requirements of the propellant dosage, and the energy consumption is relatively high. With the development, it is necessary to adopt a management system on the engine to ensure that the propellant is exhausted at the same time, to achieve a wide range of mixing ratio adjustment and to maximize the engine's payload. content of the invention [0003] In order to solve the technical problem that the existing engine supply fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/20F16K31/04F16K31/53
Inventor 谢宁冯军华雷恒程亚威陈维宇贾景卫王志永
Owner NO 11 INST OF NO 6 ACADEMY OF CHINA AEROSPACE SCI & TECH
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