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Sensor mounting base with cooling function

A sensor and mounting seat technology, applied in the field of sensor mounting seats, can solve problems such as high temperature and excessive compensation wires, and achieve the effects of reducing surface temperature, reducing measurement accuracy out of tolerance, and reducing weight burden

Active Publication Date: 2015-04-22
SUZHOU CHANGFENG AVIATION ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2. Due to the high temperature of the thermocouple installation surface, it is easy to cause the compensation wire used above the thermocouple installation surface (the operating temperature is generally 450K ~ 600K) to exceed its specified operating temperature range, so it must be cooled.

Method used

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Embodiment Construction

[0012] In the following, the specific implementation manners of the present invention will be further described in detail in conjunction with the accompanying drawings of the embodiments, so as to make the technical solution of the present invention easier to understand and grasp.

[0013] The invention innovatively proposes a mounting seat with a cooling function, that is to cool the part inserted into the casing itself, so that it can maintain a certain mechanical strength at high temperature, and at the same time, the thermocouple compensation wire part above it is cooled. cool down.

[0014] Such as Figure 1 to Figure 3 The sensor mounting seat with cooling function shown in the present invention is generally viewed as follows: a platform 1 made of nickel-based superalloy, a cylindrical boss 3 and a sealing ring (not marked) are integrally assembled and welded together coaxially, wherein the cylindrical The boss 3 is hollow (for assembling sensor structures such as therm...

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Abstract

The invention discloses a sensor mounting base with a cooling function. The sensor mounting base is formed by coaxially assembling a platform, a cylindrical boss and a sealing ring in an integrated manner. The cylindrical boss is hollow, and is provided with at least two vertical air ducts in the wall surface. The sealing ring is connected to the bottom of the cylindrical boss, and forms a horizontal annular groove communicating all the air ducts. The platform is provided with horizontal air outlet holes and air inlet holes externally connected with aviation cold air. The air inlet holes, the air outlet holes and the air ducts are gradually communicated in a crossed manner, and form an air flow channel space inside the sensor mounting base together with the horizontal annular groove. By adopting the technical scheme of the invention, through cooling structure improvement and cooling treatment, the mounting base, even made by common nickel-based alloy, can meet the mechanical strength requirement of application in an about-1600K high-temperature gas environment. The surface temperature can be effectively reduced, measurement precision out-of-tolerance caused by temperature overrun of a compensation wire part of a thermocouple is reduced, and the weight load on and the cost of aero engines are reduced.

Description

technical field [0001] The invention relates to a mounting seat for a high-temperature thermocouple sensor, in particular to a sensor mounting seat which can be used to install and fix a casing in an aero-engine. Background technique [0002] As the design temperature of aero-engine continues to increase, higher requirements are placed on the high-temperature performance of sensors. For example, in a turbofan engine with a large thrust-to-weight ratio, the temperature of the gas behind the turbine is as high as 1600K, and the temperature of the mounting surface of the casing sensor is as high as 750K. The mounting seat of the thermocouple sensor used to measure the temperature should have the following characteristics: 1. In order to meet the installation and coordination relationship between the thermocouple and the casing, the part where the thermocouple mounting seat is inserted into the casing and contacts the gas should have Certain mechanical strength. 2. Due to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/02
Inventor 彭春增蒋伟刚徐琪
Owner SUZHOU CHANGFENG AVIATION ELECTRONICS
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