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Filling material for detector cavity

A filling material and detector technology, applied in the field of materials, can solve the problem that the detector cannot withstand high temperature, and achieve the effects of being beneficial to production operation and post-maintenance, reliable structure, and excellent temperature resistance.

Inactive Publication Date: 2017-05-31
天津航空机电有限公司
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Problems solved by technology

[0007] The present invention is designed to provide a filling material for the detector cavity in view of the above-mentioned deficiencies in the prior art. The filling material is composed of zirconium silicate and magnesium oxide, and has strong temperature resistance, no expansion and reliable insulation. Inorganic filling material realizes uniform filling without air bubbles inside the detector cavity, which overcomes the problems that the detector cannot withstand high temperature, internal force leakage or insulation failure

Method used

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Embodiment Construction

[0015] Below in conjunction with embodiment technical solution of the present invention will be described in further detail:

[0016] The chemical composition and weight percentage of the filling material for the detector cavity are: 79.5-82.3% of zirconium silicate and 17.7-20.5% of magnesium oxide.

[0017] The steps of the preparation method of the filling material are as follows:

[0018] Step 1. Configure filling materials

[0019] Weigh zirconium silicate and magnesia according to the ratio and mix them. Mix the mixed material with water at a weight ratio of 100:13 and stir evenly to form a uniform paste before filling the detector cavity.

[0020] The filled and cured product has excellent temperature resistance and no expansion at high temperature. The upper limit of the service temperature can reach 1530°C. It supports and fixes the structural components in the detector cavity to ensure the stability of the internal structure and improve the vibration resistance of t...

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Abstract

The invention relates to a filling material for a detector cavity. The filling material comprises the following chemical components in percentage by weight: 79.5-82.3% of zirconium silicate and 17.7-20.5% of magnesium oxide. The filling material has the characteristics of being strong in temperature resistance and free from expansion at high temperature, having damage due to vibration and the like; and when the filling material is used for filling the gap structure in the detector cavity, not only can the working stability of a detector under high-temperature environment be enhanced, but also the application range of the filling material in the fields can be extended.

Description

technical field [0001] The invention relates to a filling material for a detector cavity and belongs to the technical field of materials. Background technique [0002] The fire detector is an important detector in the modern aircraft fire protection system, mainly used to detect fire and overheating in the aircraft engine compartment and APU compartment. With the development of my country's aviation industry, the performance requirements for fire detectors are getting higher and higher, and the detection temperature has increased from 200°C to 500°C. The change in the application environment of the detector requires it to have better temperature resistance. As an important part of the detector, the cavity part has a complex internal structure, including fixed brackets, pressure-sensitive parts, etc. The gaps in the cavity need to be filled with filling materials to ensure the insulation between the components in the detector and ensure the safety in the use environment. Vib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10
CPCC04B28/105C04B2111/00663C04B14/046
Inventor 刘婷婷李玉涛闫贵永贾志良白立鹏
Owner 天津航空机电有限公司
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