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High-temperature-resistant tubular armored platinum resistor and application thereof

A platinum resistance, high temperature resistant technology, applied in the field of thermal control facilities, can solve the problem of not being able to meet the temperature resistance requirements of the thruster, achieve good high temperature oxidation resistance and heat resistance, ensure heat resistance and life, and low thermal conductivity Effect

Inactive Publication Date: 2018-08-28
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operating temperature of the green single-element thruster can reach 1100°C, which puts forward higher requirements for the thermal control facilities that maintain the normal operation of the thruster. The original armored thermistor can no longer meet the temperature resistance requirements of the green single-element thruster

Method used

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  • High-temperature-resistant tubular armored platinum resistor and application thereof
  • High-temperature-resistant tubular armored platinum resistor and application thereof

Examples

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Effect test

Embodiment

[0035] In this embodiment, the armored platinum resistor required for a 5N space thruster is taken as an example.

[0036] The German Heraeus wire-wound PT100 platinum resistance element is selected, its size is Φ1.5×15mm, and its precision is 2B. First, inspect the appearance and size of the platinum resistance element, and measure its freezing point resistance to ensure that the element is a qualified product.

[0037] Cut a piece of platinum wire (degraded state) with a length of 70mm and a diameter of Φ0.3mm as the platinum resistance transition line, and weld the pins of the platinum resistance element and the platinum resistance transition line together by spot welding; use a CNC dicing machine to cut Φ2. The 8mm double-hole ceramic tube is 12mm, and the solder joints are protected in the double-hole ceramic tube; the platinum resistance element and the double-hole ceramic tube are put into a platinum resistance protection tube with one end sealed, and the outer diameter...

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Abstract

The invention relates to a thermal control facility for a single-element thruster of a spacecraft, in particular to a high-temperature-resistant tubular armored platinum resistor and an application thereof. A platinum resistor element of the armored platinum resistor is connected with an external lead through a platinum resistor transition line, and is connected with the transition line through the point welding technology. A double-hole ceramic tube is used for protecting welding points. The platinum resistor element, the welding points and the double-hole ceramic tube are packaged in a platinum resistor protection tube with one closed end, thereby forming an element protection module. The transition line and an insulating protection material of the transition line form a transition leading-out module, and the element protection module and the transition leading-out module are packaged in a stainless steel variable-diameter armoring tube, and remain insulated with an armoring body. The transition line and an external lead wire are connected through miniature arc welding, and a connector is in insulating protection. Moreover, the connector, the tail end of the armoring tube and theexternal lead wire are sealed in a leading-out segment. The armored platinum resistor is an independent part, is convenient to install, is good in mechanical properties, and can be used for the thermal control of the attitude of the spacecraft and a rail control propulsion system.

Description

technical field [0001] The invention relates to a thermal control facility for a single-unit thruster of an aerospace vehicle, specifically a high-temperature-resistant tubular armored platinum resistance and its application. The tubular armored platinum resistance placed on the outer wall of the catalytic bed of the thruster can accurately measure The temperature of the catalytic bed of the thruster is used as the basis for remote sensing and remote control to ensure the normal operation of the satellite. Background technique [0002] The satellite thruster is a key component in the control subsystem that adjusts the orbit and flight attitude of the satellite. On the single-component catalytic decomposition thruster, it is necessary to maintain a certain starting temperature in the hydrazine decomposition chamber through thermal control to maintain the working life of the thruster, so a thermal control facility composed of special heating, temperature measurement and heat p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/18
Inventor 段德莉张荣禄杨晓光李明阳侯思焓王鹏李海英
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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