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CN-122016063-A - Temperature sensor protection casing, engine sensor structure and aeroengine

CN122016063ACN 122016063 ACN122016063 ACN 122016063ACN-122016063-A

Abstract

The embodiment of the invention provides a temperature sensor protective cover, an engine sensor structure and an aeroengine, and relates to the field of sensors. The method aims to solve the problem that the accuracy of temperature measurement of the aero-engine is difficult to guarantee under the conditions of rain absorption and hail absorption. The temperature sensor protective cover comprises a protective cover body, wherein the protective cover body comprises a bottom plate and a side wall plate connected with the bottom plate, the side wall plate comprises a windward side and a leeward side, the windward side faces the incoming flow direction, the bottom plate is provided with an air inlet, a flow guiding part is arranged at the joint of the windward side and the bottom plate and used for guiding airflow flowing to the windward side to flow in a direction which is obliquely downward and far away from the air inlet, and the side wall plate is provided with an air outlet at the leeward side. The engine sensor structure and the aeroengine comprise the temperature sensor protective cover. The temperature sensing element that the shield can effectively block hail contact temperature sensor realizes the accurate measurement of temperature under the hail condition is inhaled in the engine.

Inventors

  • DAI XIAOQING
  • JIANG YOUWEI

Assignees

  • 中国航发商用航空发动机有限责任公司

Dates

Publication Date
20260512
Application Date
20241112

Claims (10)

  1. 1. A temperature sensor shield for shielding outside a temperature sensor (20), characterized in that the temperature sensor shield comprises a shield (100); The protective cover (100) comprises a bottom plate (110) and a side wall board (120) connected with the bottom plate (110), wherein the bottom plate (110) and the side wall board (120) enclose a cavity (300) for installing a temperature sensor (20), and the side wall board (120) comprises a windward side and a leeward side which are opposite in position, and the windward side faces the incoming flow direction; The bottom plate (110) is provided with an air inlet (111), a diversion part (400) is arranged at the joint of the windward side and the bottom plate (110) of the side wall plate (120), and the diversion part (400) is used for guiding the airflow flowing to the windward side to flow along the direction of obliquely downwards and far away from the air inlet (111); The side wall plate (120) is provided with an air outlet (121) on the leeward side.
  2. 2. The temperature sensor shield of claim 1, wherein: The flow guiding part (400) is an arc surface for connecting the windward side of the side wall plate (120) and the bottom plate (110).
  3. 3. The temperature sensor shield of claim 1, wherein: The side wall board (120) is integrally formed on the windward side and the leeward side, the side wall board (120) encloses into a hollow cylindrical structure, and one end of the side wall board (120) is connected with the bottom plate (110).
  4. 4. A temperature sensor shield according to claim 3, characterized in that: The connection part of the side wall plate (120) and the bottom plate (110) is provided with a chamfer structure, and the chamfer structure forms the flow guiding part (400).
  5. 5. The temperature sensor shield of claim 1, wherein: The number of the air inlets (111) is multiple, the air inlets (111) are arranged on the bottom plate (110) at intervals, and the air inlets (111) can filter particulate matters.
  6. 6. The temperature sensor shield according to any one of claims 1-5, wherein: the temperature sensor protective cover further comprises a heat insulation material layer, and the heat insulation material layer is arranged on the inner wall of the protective cover (100).
  7. 7. The temperature sensor shield according to any one of claims 1-5, wherein: the temperature sensor protective cover further comprises a high-polymer anti-hydrophobic coating, and the outer wall of the protective cover (100) is coated with the high-polymer anti-hydrophobic coating.
  8. 8. The temperature sensor shield according to any one of claims 1-5, wherein: The temperature sensor protective cover further comprises an installation seat (200), wherein the protective cover (100) is fixed with the installation seat (200), and the installation seat (200) is used for installing the temperature sensor (20) and is used for installing and fixing the protective cover (100).
  9. 9. An engine sensor arrangement, characterized in that the engine sensor arrangement comprises a casing, a temperature sensor (20) and a temperature sensor protection cover according to any one of claims 1-8, the temperature sensor protection cover being fixed to the casing, the temperature sensor (20) being fixed within the temperature sensor protection cover.
  10. 10. An aeroengine comprising a fan blade, a high pressure compressor and the engine sensor structure of claim 9, the engine sensor structure being arranged in front of the fan blade and/or the engine sensor structure being arranged in front of the high pressure compressor.

Description

Temperature sensor protection casing, engine sensor structure and aeroengine Technical Field The invention relates to the field of sensors, in particular to a temperature sensor protective cover, an engine sensor structure and an aeroengine. Background After the aero-engine sucks in rain and hail, it may change the working state of its compression parts, combustion chambers, turbines, etc., resulting in a series of engine anomalies such as surge, power loss, and flameout. After detecting hail sucked by the engine, the control system should take feedback measures to regulate the engine, so as to prevent the engine from dangerous conditions such as surge, flameout and the like. However, under the condition of rain absorbing and hail absorbing, not only the working performance of components such as a compressor, a combustion chamber and the like can be directly affected by the inhalation of rain or hail, but also a control system of an engine can send out an error command to further cause abnormal operation of each component and the whole engine, for example, rain or hail can be attached to a sensor in the process of moving in the engine, and the temperature read by the temperature sensor such as T12 and T25 is lower due to the difference between the rain or hail and the temperature of air flow, so that the control logic of the engine is wrong, and the safety of the engine is seriously threatened. Since the nineties of the last century, methods of detection using temperature, static electricity, noise, etc., have emerged in succession, enabling the monitoring of the intake of hail by the engine from a plurality of points, so as to allow the rapid regulation of the engine to avoid adverse engine operating conditions. In addition, the temperature sensor structure of the control system is improved in design, but compared with the traditional temperature sensor without water resistance, the waterproof temperature sensor has the advantages that the structural design is changed greatly, the installation difficulty is relatively high, and the implementation in engineering development is difficult. Disclosure of Invention The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later. The invention aims to provide a temperature sensor protective cover, an engine sensor structure and an aeroengine, which can solve the problem that the accuracy of temperature measurement of the aeroengine is difficult to guarantee under the conditions of rain absorption and hail absorption. Embodiments of the invention may be implemented as follows: The embodiment of the invention provides a temperature sensor protection cover which is used for being arranged outside a temperature sensor and comprises a protection cover body, wherein the protection cover body comprises a bottom plate and a side wall plate connected with the bottom plate, a cavity for installing the temperature sensor is formed by the bottom plate and the side wall plate, the side wall plate comprises a windward side and a leeward side which are opposite in position, the windward side faces to an incoming flow direction, the bottom plate is provided with an air inlet, a diversion part is arranged at the joint of the windward side and the bottom plate, the diversion part is used for guiding airflow flowing to the windward side to flow in a direction which is obliquely downward and far away from the air inlet, and the side wall plate is provided with an air outlet on the leeward side. In addition, the temperature sensor protection cover provided by the embodiment of the invention can also have the following additional technical characteristics: Optionally, the diversion part is an arc surface for connecting the windward side of the side wall plate and the bottom plate. Optionally, the windward side and the leeward side of the side wall board are integrally formed, the side wall board encloses into a hollow cylindrical structure, and one end of the side wall board is connected with the bottom plate. Optionally, a chamfer structure is arranged at the joint of the side wall plate and the bottom plate, and the chamfer structure forms the flow guiding part. Optionally, the quantity of air inlet is a plurality of, and a plurality of air inlet interval sets up on the bottom plate, a plurality of the air inlet can filter particulate matter. Optionally, the temperature sensor protective cover further comprises a heat insulation material layer, and the heat insulation material layer is arranged on the inner wall of the protective cover. Optionally, the temperature sensor pro