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Shell assembly used for aerial hydraulic fuel pump

A shell assembly and fuel pump technology, which is applied to components, pump components, engine components, etc. of elastic fluid pumping devices, can solve problems such as cooling and lowering product performance, and achieve reduced impact and greater effect Effect

Inactive Publication Date: 2015-05-20
JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] Most fuel pumps driven by high-pressure fuel are supported by graphite bearings. The heat generated by the friction between graphite bearings and shafts cannot be cooled by the fuel that naturally enters the working surface. Other methods must be adopted to ensure that the working surface of graphite bearings has enough fuel for lubrication. and cooling, in the past, most of the water was drained from the low-pressure area, which reduced the performance of the product

Method used

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  • Shell assembly used for aerial hydraulic fuel pump
  • Shell assembly used for aerial hydraulic fuel pump

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Embodiment Construction

[0011] The present invention will be further described in detail through specific embodiments below. see figure 1 and figure 2 .

[0012] Such as figure 1 As shown, a casing assembly of an aviation hydraulic fuel pump, two graphite bearings 1 are connected to the guide 2 through interference hot pressure; holes are respectively opened on the inner and outer walls of the guide 2; the guide tube 3 is inserted into the guide In the two holes opened by 2; the nozzles on both sides of the conduit 3 are flared respectively, so that the conduit 3 is stuck in the two holes opened by the guide 2; the guide 2 is connected with the housing 4 through interference heat pressure to form a high-pressure power Fuel zone and low pressure fuel delivery zone.

[0013] Such as figure 2 As shown (the arrow indicates the fuel medium flow route), when working, when the product is working, after the high-pressure fuel drives the product, it enters the inner cavity of the guide 2 through the co...

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PUM

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Abstract

The invention provides a shell assembly used for an aerial hydraulic fuel pump. The shell assembly comprises two graphite bearings (1), a guider (2), a guide tube (3) and a shell (4). The two graphite bearings (1) are installed in an upper cavity and a lower cavity of the guider (2) respectively. The inner wall and the outer wall of the guider (2) are each provided with a round hole, and the guide tube (3) is fixed to the interiors of the round holes in the inner wall and the outer wall of the guider (2). The guider (2) is installed in the shell (4). An outlet fuel low pressure area is formed between the inner wall and the outer wall of the guider (2). A power fuel high pressure area is formed between the outer wall of the guider (2) and the inner wall of the shell (4). High-pressure power fuel enters an inner cavity of the guider (2) through the guide tube (3) to lubricate and cool the graphite bearings (1).

Description

technical field [0001] The invention belongs to an aviation fuel system and relates to a hydraulic fuel pump. Background technique [0002] Most fuel pumps driven by high-pressure fuel are supported by graphite bearings. The heat generated by the friction between graphite bearings and shafts cannot be cooled by the fuel that naturally enters the working surface. Other methods must be adopted to ensure that the working surface of graphite bearings has enough fuel for lubrication. And cooling, in the past, most of the water was drained from the low-pressure area, which reduced the performance of the product. [0003] The present invention is to design a shell assembly, which adopts the way of setting a conduit to lead high-pressure fuel oil into the working cavity of the graphite bearing, which lubricates and cools the graphite bearing, ensures reliable operation of the product, and does not affect the output of fuel oil in the low-pressure area, ensuring Product performance....

Claims

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Application Information

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IPC IPC(8): F04B53/16F02M37/04
Inventor 李爽徐三树
Owner JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA