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An electric heating pitot tube and its assembly method

An assembly method and technology of pitot tubes, which are applied in ohmic resistance heating circuit diagrams, aircraft assembly, heating element shapes, etc., can solve problems such as complex control circuits, poor reliability, and single electric heating control strategy, and achieve simplified control circuits , improve stability and anti-interference ability, improve the effect of heating control effect

Active Publication Date: 2022-04-12
西安爱生无人机技术有限公司
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Problems solved by technology

[0004] The main purpose of the present invention is to solve the technical problems of the poor structural reliability of the pitot tube in the high-altitude aircraft in the prior art, and the technical problems of single electric heating control strategy and complex control circuit in the pitot tube, and provide an electric heating pitot tube and its assembly method

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  • An electric heating pitot tube and its assembly method
  • An electric heating pitot tube and its assembly method
  • An electric heating pitot tube and its assembly method

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Embodiment Construction

[0041] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings. Apparently, the described embodiments do not limit the present invention.

[0042] Such as figure 1 , an electrically heated pitot tube, a central tube 4 and a shell. Wherein, the housing comprises a front conical housing 1, a middle cylindrical housing 2 and a rear conical housing 3 connected in sequence; Set in the same direction, the front end opening of the front conical shell 1 is set, and the exterior of the shell transitions smoothly as a whole. The central tube 4 is sleeved in the shell, one end of the central tube 4 protrudes from the outside of the rear conical shell 3, the other end is located in the front conical shell 1 and communicates with the outside world, and the central tube 4 is installed in the middle of the shell. Position to provide airflow path for measuring a...

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Abstract

The invention belongs to the pitot tube and its assembly method. In order to solve the problems of poor structural reliability of the pitot tube, complex internal electric heating control circuit and poor control effect, the invention provides an electric heating pitot tube and its assembly method. The pitot tube includes a central tube, a front conical shell, a middle cylindrical shell and a rear conical shell; the central tube is sleeved in the shell, and one end of the central tube protrudes outside the rear conical shell, and the other One end is located in the front conical shell and communicates with the outside world; there is a thermal resistance wire between the central tube and the middle cylindrical shell, and a control circuit board is set between the central tube and the rear conical shell; the control circuit board The circuit is provided with a power supply circuit unit, a heating control circuit unit and a filter circuit unit. The assembly method is to install the central tube in the front conical shell first, then install the thermal resistance wire and the middle cylindrical shell in sequence, check the thermal resistance wire and the control circuit board and then package it, and then install the rear conical shell to strengthen it. sex.

Description

technical field [0001] The invention belongs to a pitot tube and an assembly method thereof, in particular to an electric heating pitot tube and an assembly method thereof. Background technique [0002] Pitot tube icing is one of the technical problems of high-altitude aircraft. Usually, designers install electric heating devices inside the pitot tube and use certain heating control strategies to solve the problem of pitot tube icing. [0003] At present, the following problems still exist in the pitot and its electric heating device used in the field of small unmanned aerial vehicles: 1. The electric heating control circuit is complicated and the cost is high. The common electric heating circuit uses the microcontroller to collect the current temperature through the temperature sensor A / D, and obtains the corresponding heating control strategy through internal calculation, so as to realize the temperature adjustment of the pitot tube, but the composition structure of this t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D23/24H05B3/40G01P1/00G01P1/02B64F5/10
CPCH05B3/40H05B3/0019G01P1/00G01P1/026G05D23/2451B64F5/10
Inventor 安斌周明张立雄李海飞王水马远超王磊郭志永袁钟达杨健王剑飞李德庚杨格非翟雄辉李龙洲李乐
Owner 西安爱生无人机技术有限公司
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