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High-temperature sealing structure for flange surface of engine exhaust system

An exhaust system, high temperature sealing technology, used in engine components, machines/engines, flange connections, etc., can solve the problems of poor thermal compensation ability and high temperature ductility, and achieve good expansion performance, long-term effective and stable thermal compensation Deformation ability, the effect of ensuring long-term sealing reliability

Pending Publication Date: 2020-07-24
GUANGXI YUCHAI MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a high-temperature sealing structure for the flange surface of the engine exhaust system, aimi

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  • High-temperature sealing structure for flange surface of engine exhaust system
  • High-temperature sealing structure for flange surface of engine exhaust system

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[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail through specific embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0024] In the embodiment of the present invention, a high-temperature sealing structure for the flange surface of the engine exhaust system is provided, such as figure 1 a. figure 1 As shown in b, it includes: exhaust pipe flange 1, supercharger flange 2 and sealing rope 3. The center of exhaust pipe flange 1 is provided with an exhaust port 8 (such as figure 2 (Shown), the sealing rope 3 is arranged in the groove of the outer wall of the exhaust port 8;

[0025] The exhaust pipe flange 1 is also provided with an exhaust flange surface 6, and the turbocharger flange 2 is also provid...

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Abstract

The invention provides a high-temperature sealing structure for a flange surface of an engine exhaust system. The high-temperature sealing structure comprises an exhaust pipe flange, a booster flangeand a sealing rope; and an exhaust port is formed in the center of the exhaust pipe flange, the sealing rope is arranged in a groove formed in the outer wall of the exhaust port, the exhaust pipe flange is further provided with an exhaust flange surface, the booster flange is provided with a boosting flange surface, and the exhaust flange surface and the boosting flange surface are tightly attached and fixed. According to the high-temperature sealing structure for the flange surface of the engine exhaust system, a sealing mode of replacing a sealing gasket with the sealing rope is adopted, long-term effective and stable thermal compensation deformation capacity can be provided, and long-term sealing reliability is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of high-temperature heat insulation sealing, and in particular relates to a high-temperature sealing structure of a flange surface of an engine exhaust system. Background technique [0002] The sealing of the engine exhaust system is a necessary guarantee for the normal operation of the engine, and it is also a necessary prerequisite for the safe operation of the engine. Especially for the sealing of the exhaust flange surface, the sealing auxiliary parts must have high temperature resistance and reliable sealing performance. The traditional sealing of the exhaust flange surface adopts the auxiliary sealing form of the gasket, which has a great influence on the thickness of the gasket, High temperature resistance requirements. The sealing form of the exhaust pipe exhaust gas outlet of the current National VI natural gas engine and the exhaust gas inlet of the supercharger adopts the sealing form of flange c...

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Application Information

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IPC IPC(8): F01N13/18F01N13/08F01N13/16F16L23/16
CPCF01N13/08F01N13/16F01N13/1827F16L23/16
Inventor 蔡伟妹黎华文伍平铅李悦杨武松陆幼艳
Owner GUANGXI YUCHAI MASCH CO LTD