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Ignition electric nozzle igniting end cooling channel

A cooling channel and firing end technology, applied in the cooling of the engine, the cooling of the turbine/propulsion device, the engine components, etc., can solve the problems of easy ablation of the semiconductor glaze layer, side electrode ablation, temperature rise, etc., to alleviate the high temperature Working environment, reducing side electrode ablation, improving service life

Active Publication Date: 2018-05-22
四川泛华航空仪表电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the ignition nozzles of aero-engines are commonly used on the surface of the nozzle and the semiconductor nozzle. The surface of the nozzle works for a long time in a high-temperature environment, and it is very easy to ablate the side electrode, which will increase the ignition voltage of the ignition nozzle and affect the ignition system. Ignition performance; the semiconductor nozzle works for a long time in a high temperature environment, and the semiconductor glaze layer is easy to be ablated and worn, resulting in a reduction in the service life of the product
At present, designers are improving the design from multiple aspects to improve the life and reliability of the product, such as looking for high-temperature resistant materials and reducing the temperature of the ignition end of the electric nozzle. The roasting caused the temperature of the ignition tip to rise continuously during long-term use, which seriously affected the service life of the ignition tip

Method used

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  • Ignition electric nozzle igniting end cooling channel
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] combined with figure 1 , attached figure 2 As shown, a cooling channel for the firing end of an ignition nozzle includes a nozzle 3 of the ignition nozzle, and the interior of the nozzle 3 is provided with a wiring screw 1 that coincides with the axis of the nozzle 3, and the top of the wiring screw 1 is provided with a resistor Sealant 4, a center electrode 5 is installed on the resistance sealant 4, a cooling hole 6 is provided at one end of the nozzle tube 3 near the center electrode 5, a semiconductor glaze 8 is provided at the front end of the center electrode 5, and the cooling The gap between the hole 6 and the semiconductor glaze 8 is the ignition end surface 7, the side of the nozzle 3 is provided with a flow hole 9, and the inner side of the nozzle 3 is provided with a cooling pipe 2 connecting the flow hole 9 and the cooling hole 6.

[0022] Structural principles:

[0023] The circumferential side of the nozzle pipe 3 is provided with flow holes 9, which a...

Embodiment 2

[0025] In order to improve the cooling effect of the ignition end face 7 and ensure the safety of the ignition nozzle, on the basis of the structure and principle of Embodiment 1, further combined with the attached figure 1 , attached figure 2 As shown, in this embodiment, the cooling holes 6 are arranged on the end surface of the nozzle 3 close to the center electrode 5 , and the flow holes 9 are arranged on the side wall of the nozzle 3 .

[0026] Structural principles:

[0027] Cooling holes 6 and other central angles are arranged on the outside of the firing end surface 7, and circulation holes 9 and other central angles are arranged on the outer side of the nozzle pipe 3 circumference. The cooling holes 6 correspond to the nozzle pipe 3, and a communication cooling hole 6 is fixed inside the nozzle pipe 3 The cooling pipe 2 of the circulation hole 9, and each group of cooling holes 6, cooling pipe 2, and circulation hole 9 connected to each other are on the same straigh...

Embodiment 3

[0029] In order to improve the practicability of the ignition nozzle and ensure the service life of the ignition nozzle, on the basis of the structure and principle of Embodiment 1, further combine the attached figure 1 , attached figure 2 As shown, in this embodiment, the cooling pipe 2 is sealed and connected to the flow hole 9, the cooling pipe 2 is fixedly connected to the inner wall of the spray pipe 3, the cooling hole 6 is clamped with the cooling pipe 2, and the mutual The connected cooling holes 6, cooling pipes 2, and circulation holes 9 are on a straight line.

[0030] Structural principles:

[0031] The cooling pipe 2 is sealed and connected to the flow hole 9 on the nozzle 3, and the cooling pipe 2 is fixedly connected to the inner wall of the nozzle 3 to ensure the stability of the ignition nozzle. Each group of cooling holes 6, cooling pipes 2, and flow holes 9 that are connected to each other can ensure the fastest air circulation on the same straight line a...

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PUM

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Abstract

The invention discloses an ignition electric nozzle igniting end cooling channel which comprises an ignition nozzle spraying pipe. A connection screw coincident with the axis of the spraying pipe is arranged inside the spraying pipe, a resistance sealant is arranged at the top end of the connection screw, a center electrode is installed on the resistance sealant, a cooling hole is formed in the end, close to the center electrode, of the spraying pipe, semiconductor glaze is arranged at the front end of the center electrode, a gap between the cooling hole and the semiconductor glaze is an igniting end face, a circulation hole is formed in the side face of the spraying pipe, a cooling pipe for enabling the circulation hole and the cooling hole to communicate is arranged on the inner side ofthe spraying pipe, an ignition electric nozzle is provided with the cooling pipe, the cooling hole and the circulation hole which communicate, the end face of the ignition electric nozzle is cooled, the service life of the ignition electric nozzle is prolonged, the reliability of the ignition electric nozzle is improved, in the working process of the ignition electric nozzle, the cooling functionof the ignition electric nozzle igniting end is achieved through the cooling pipe by means of circulated flowing of air flow or other cooling objects, and the high-temperature work environment of theignition electric nozzle is effectively remitted.

Description

technical field [0001] The invention relates to the field of electric ignition systems, in particular to a cooling channel for the ignition end of an ignition tip. Background technique [0002] The ignition nozzle is one of the key components in the ignition system of an aeroengine. Its function is to convert the high-voltage electric energy pulse generated by the ignition device into an electric spark to ignite the combustible fuel-gas mixture in the engine combustion chamber. At present, the ignition nozzles of aero-engines are commonly used on the surface of the nozzle and the semiconductor nozzle. The surface of the nozzle works for a long time in a high-temperature environment, and it is very easy to ablate the side electrode, which will increase the ignition voltage of the ignition nozzle and affect the ignition system. Ignition performance: Semiconductor nozzles work for a long time in a high-temperature environment, and the semiconductor glaze layer is easy to ablate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/266F02C7/12
Inventor 雷宇杨光明
Owner 四川泛华航空仪表电器有限公司