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A pressure sensor pressure assembly for satellite pipeline welding

A pressure sensor and pressure technology, applied in the direction of fluid pressure measurement by changing ohmic resistance, can solve the problems of low sealing reliability, high processing requirements of parts, poor anti-vibration performance, etc., to ensure the reliability of structural strength and reduce leakage. risk, the effect of improving sealing reliability

Active Publication Date: 2015-12-30
BEIJING INST OF CONTROL ENG
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Problems solved by technology

The pipeline material of spacecraft propulsion system is titanium alloy, and the welding performance of pressure components and pipelines cannot be guaranteed by conventional argon arc welding; The M12x1 star joint is connected to the system with a hard-sealed connection form of "inner cone facing the pipe ball head"; this connection method has high requirements for parts processing, poor anti-vibration performance, and low sealing reliability. It is easy to cause the risk of leakage of the working medium of the system, and may cause catastrophic failure of the spacecraft

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  • A pressure sensor pressure assembly for satellite pipeline welding
  • A pressure sensor pressure assembly for satellite pipeline welding
  • A pressure sensor pressure assembly for satellite pipeline welding

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Embodiment

[0023] A pressure sensor pressure assembly for satellite pipeline welding, the pressure assembly is used to weld the pressure sensor and satellite pipeline, the pressure assembly includes a straight pipe pressure joint 1, a bracket 3 and a pressure sensitive element 2, such as Figure 4 shown;

[0024] Such as figure 1 As shown, the straight pipe pressure joint is made of titanium alloy and has a hollow four-step cylindrical structure, that is, the straight pipe pressure joint is four hollow cylinders from left to right, and the diameters of the adjacent cylinders become smaller in turn. There is a circular arc transition between sections; among them, from the left end, the first section of cylinder has an outer diameter of 6mm, an inner diameter of 4mm, and a length of 50mm; the second section has an outer diameter of 23mm, an inner diameter of 19.2mm, and a length of 13mm; The diameter is 26mm, the internal thread size is M22X1, and the length is 14.5mm. The fourth cylinder...

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Abstract

The invention relates to a pressure sensor pressure assembly used for satellite pipeline welding, and belongs to the technical field of spacecraft fluid pressure measuring. The pressure sensor pressure assembly is suitable for sealing welding of spacecraft pressure sensors and system pipelines. The pressure assembly comprises a straight pipe compression fitting, a support and a pressure-sensitive element. The pressure assembly solves the problem that a pressure sensor cannot be welded with a satellite pipeline in a sealing mode. The structure can guarantee the structural strength of a product and 0.05% of high measuring precision, and also improves the sealing reliability of a satellite propelling subsystem; the whole machine performance achieves the international advanced level. Welding of the pressure assembly and the satellite pipeline is successfully guaranteed; the sealing reliability of the system is improved and the leakage risk is lowered.

Description

technical field [0001] The invention relates to a pressure sensor pressure component used for satellite pipeline welding, belongs to the technical field of spacecraft fluid pressure measurement, and is suitable for the welding and sealing of spacecraft pressure sensors and system pipelines. Background technique [0002] In the field of fluid measurement of spacecraft, such as in the dual-component satellite propulsion subsystem, the pressure sensor is used to measure the pressure of the fluid working medium in the storage tank and high-pressure helium cylinder, and its output signal is used for the status of the overall sub-system of the satellite. Interpretation, subsystem on-orbit management, and satellite life prediction. In the electric propulsion storage-supply subsystem, the pressure sensor is used to measure the xenon pressure; and participates in the system feedback control to achieve the purpose of system pressure regulation; the key characteristics of the pressure ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L9/06
Inventor 关威范旭丰魏延明陈君张恒付新菊龙军李秀堂
Owner BEIJING INST OF CONTROL ENG
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