Spray atomizer for fine coal slurry fuel

A spray atomization and coal slurry technology, applied in the direction of fuel injection devices, injection devices, liquid injection devices, etc., can solve the problems of increased movement resistance of nozzle parts, damage to lubrication, inability to complete fuel injection, atomization, etc., to achieve expansion The effect of the field of application

Inactive Publication Date: 2009-04-22
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the research on the application of fine coal slurry fuel in diesel engines, it was found that the fuel injectors for diesel engines could not be used directly. The reasons were found: 1. There are coal particles in fine coal slurry fuel; 2. High pressure fine coal Part of the slurry fuel infiltrates into the gap of the nozzle moving parts (hereinafter referred to as the nozzle part) before spraying and atomizing, destroying the original lubrication; 3. The fine coal slurry fuel infiltrated into the gap of the nozzle The action of coal particles or coal lumps will increase the movement resistance and heat of the nozzle coupler; 4. The heated nozzle coupler will cause more coal particles or coal lumps to penetrate into the gap, and eventually the moving nozzle coupler will be stuck.
The stuck moving nozzle parts cannot complete the injection and atomization of fuel, causing the engine to stop working

Method used

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  • Spray atomizer for fine coal slurry fuel
  • Spray atomizer for fine coal slurry fuel
  • Spray atomizer for fine coal slurry fuel

Examples

Experimental program
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Effect test

Embodiment Construction

[0035] figure 1 Schematic diagram of a jet atomizer for a swirl chamber diesel engine fueled with fine coal slurry. It consists of a sprayer body 1 and a spray nozzle pair 2, which are positioned by a locator and then screwed and fixed by a screw cap 14.

[0036] The locator is composed of a locating pin 12 and a locating hole 13 (refer to FIG. 3 ). The slurry supply channel 3 and the oil supply channel 6 are opened in the sprayer body 1, and the positions of the slurry supply channel 3 and the oil supply channel 6 are opposite, as long as the coal slurry fuel is not mixed with the lubricating diesel oil and can be installed .

[0037] figure 2 Schematic of a jet atomizer for a direct injection diesel engine fueled with fine coal slurry. It consists of a sprayer body 1 and a spray nozzle pair 2, which are positioned by a locator and then screwed and fixed by a screw cap 14. The locator is composed of a locating pin 12 and a locating hole 13 (refer to FIG. 4 ). The slurr...

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Abstract

A spray atomizer for burning fine coal slurry is composed of slurry sprayer and slurry nozzle. Said sprayer has slurry channel, oil channel and positioning pin. Said nozzle has needle valve body, needle valve and positioning hole. In needle valve body there are slurry feeding hole, oil feeding hole, spray hole, high-pressure slurry cavity and annular oil cavity. When the pressure of high-pressure slurry cavity is higher than that to open needle valve, the fine coal slurry is sprayed from spray hole into cylinder for combustion in it, performing spray atomizing.

Description

technical field [0001] The invention relates to a jet atomizer used for high-pressure atomization and combustion of coal-based oil-substituting fuel-fine coal slurry fuel in a diesel engine. Background technique [0002] Fine coal slurry fuel is used in diesel engines. Although there are experiments abroad, the content has not been reported. The invention fills up the gap in the application technology of fine coal slurry fuel in diesel engines. [0003] During the research on the application of fine coal slurry fuel in diesel engines, it was found that the fuel injectors for diesel engines could not be used directly. The reasons were found: 1. There are coal particles in fine coal slurry fuel; 2. High pressure fine coal Part of the slurry fuel infiltrates into the gap of the nozzle moving parts (hereinafter referred to as the nozzle part) before spraying and atomizing, destroying the original lubrication; 3. The fine coal slurry fuel infiltrated into the gap of the nozzle ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M61/10B05B9/03F02B45/02F02M61/00
CPCY02T10/34Y02T10/30
Inventor 张文富张少杰谢瑜付晓恒王祖讷
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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