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Water-cooling-type tail gas cleanup device of explosion-proof diesel engine

A technology of exhaust gas purification device and explosion-proof diesel engine, which is applied to exhaust devices, mufflers, mechanical equipment, etc., can solve problems such as affecting conversion efficiency, achieve uniform heating, avoid shell cracking, and prolong life.

Active Publication Date: 2014-08-27
CHANGZHOU DEV & MFR CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the temperature of the core body of the oxidation catalytic converter must reach the reaction temperature, otherwise the conversion efficiency will be affected

Method used

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  • Water-cooling-type tail gas cleanup device of explosion-proof diesel engine
  • Water-cooling-type tail gas cleanup device of explosion-proof diesel engine
  • Water-cooling-type tail gas cleanup device of explosion-proof diesel engine

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Embodiment 1

[0017] See Figure 1 to Figure 4 , the present embodiment has a front flange 1, a rear flange 13, a shell and a DOC core 9, the shell has a main body shell 6 and a lower shell 12, and the front part of the main body shell 6 is a cone with an air inlet Body, the rear portion of the main body housing 6 is a hemisphere. The DOC core 7 is coated with a catalyst coating mainly composed of precious metals platinum and rhodium. The outer cylindrical surface of the DOC core 9 is covered with a thin iron sheet 9-1 with a thickness not exceeding 1.8mm.

[0018] Main body shell 6 and lower shell 12 are respectively made up of inner and outer shells, and between inner and outer shells is a water jacket, that is, main body shell 6 is made up of main body outer shell 6-1, main body inner shell 6-2, and lower shell The body 12 is composed of a lower shell outer shell 12-1 and a lower shell inner shell 12-2. The water jacket 6-e of the main body shell 6 and the water jacket 12-e of the lowe...

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Abstract

A water-cooling-type tail gas cleanup device of an explosion-proof diesel engine is provided with a front flange, a rear flange, a shell and a DOC core. The front flange is fixed to the front end of a main body shell, a thermal-insulation flange is arranged in the front flange, the rear half portion of the front flange is connected with a flow guide cover, the rear of the flow guide cover goes deep into the main body shell, a front space ring and a rear space ring are arranged on the inner wall of the middle of the main body shell, the DOC core is clamped between the front space ring and the rear space ring, an annular area outside the cylindrical surface of the DOC core between the front space ring and the rear space ring is an air isolation area, an inner shell of a lower shell extends upwards to form a flow guide pipe, an air outlet hole is formed in the cylindrical surface, facing the wall of a hemispheroid cavity, of the flow guide pipe, and the rear flange is installed at the lower end of the lower shell. Through the water-cooling-type tail gas cleanup device, not only is the surface temperature of the diesel engine made to reach the standards, but also high conversion efficiency of the DOC core can be guaranteed.

Description

technical field [0001] The invention relates to a water-cooled tail gas purification device for an explosion-proof diesel engine. Background technique [0002] In coal mine underground machinery, explosion-proof diesel engine is one of the main power sources. Due to the particularity of its operating environment, the emission level of explosion-proof diesel engines is far behind that of ordinary diesel engines. Under the mine, due to the limitation of roadway ventilation conditions, the harmful gas emitted by the explosion-proof diesel engine cannot be diffused in time, which makes the air quality of the roadway continue to decline, and seriously endangers the health of underground workers. The utility model patent with Chinese patent number 200920103426.4 discloses an explosion-proof diesel engine exhaust gas purifier, which includes a shell composed of an upper shell and a lower shell and an oxidation-type catalytic converter core (DOC) placed in the shell, and the upper ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/04F01N13/14F01N3/28
Inventor 姜汉军李庆华董兵兵赵益乔邱骞王登化
Owner CHANGZHOU DEV & MFR CENT
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