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A proportional solenoid valve for precise control of tiny flow

A proportional solenoid valve, precise control technology, applied in valve details, valve devices, valve operation/release devices, etc., can solve problems affecting the performance of electric thrusters, slow system response time, waste of xenon wages, etc., to eliminate Needle valve self-locking phenomenon, realizing reliable sealing and improving reliability

Active Publication Date: 2019-12-20
BEIJING INST OF CONTROL ENG
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AI Technical Summary

Problems solved by technology

[0003] Conventional mechanical decompression and throttling methods cannot meet the needs of changing flow on the rail, but the bang-bang electronic pressure negative feedback control strategy with high-speed on-off solenoid valve as the core is used to control the large and small flow switching process, and the system response time Slow, in addition to causing additional waste of xenon gas wages, it also affects the performance of the electric thruster

Method used

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  • A proportional solenoid valve for precise control of tiny flow
  • A proportional solenoid valve for precise control of tiny flow
  • A proportional solenoid valve for precise control of tiny flow

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Embodiment Construction

[0035] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0036] figure 1 It is a structural schematic diagram of a proportional solenoid valve for precise control of small flow rate provided by the embodiment of th...

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Abstract

The invention discloses a micro-flow accurate control type proportional electromagnetic valve comprising an inlet connector, a valve body-coil assembly, an outer magnetizer, an armature assembly, a valve seat assembly, an outlet connector, a first shell and a second shell. The first shell and the second shell are connected. The valve body-coil assembly, the outer magnetizer and the armature assembly are all arranged in an internal space formed by the first shell and the second shell. The valve body-coil assembly is connected with the armature assembly. The outer magnetizer is arranged outsidethe valve body-coil assembly in a sleeving manner. The inlet connector is connected with the valve body-coil assembly. One end face of the outlet connector is connected with the armature assembly in acompression manner. The side wall of the outlet connector is connected with the second shell. The valve seat assembly is arranged in the outlet connector. One end of the armature assembly is embeddedinto the valve seat assembly. The micro-flow accurate control type proportional electromagnetic valve can achieve the function of high-precision pressure and flow continuous output control and effectively guarantee reliable work of an electric propulsion system.

Description

technical field [0001] The invention belongs to the technical field of spacecraft space fluid management, and in particular relates to a proportional solenoid valve for precise control of tiny flow. Background technique [0002] my country's new-generation DFH-5 satellite platform requires the electric propulsion system to work in a multi-mode manner with variable power and thrust to complete tasks such as satellite orbit transfer, orbit entry, position maintenance on orbit, and momentum wheel unloading. In order to realize the multi-mode operation of the electric propulsion system, the storage and supply subsystem must be able to provide a variable and precisely controllable micro-xenon gas flow for the thruster. [0003] Conventional mechanical decompression and throttling methods cannot meet the needs of changing flow on the rail, but the bang-bang electronic pressure negative feedback control strategy with high-speed on-off solenoid valve as the core is used to control t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/06
CPCF16K31/0675
Inventor 苟浩亮张兵曾昭奇刘晖沈岩魏延明惠欢欢陈君王新慧刘全成
Owner BEIJING INST OF CONTROL ENG
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