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Dual sealing device for high-pressure pipeline in automobile engine

An automobile engine, medium and high pressure technology, which is applied in the direction of mechanical equipment, pipes/pipe joints/fittings, flange connections, etc. It can solve problems such as leakage at the interface and affect the service life of the workpiece, so as to prevent leakage risks and strong self-adaptive ability , The effect of reducing the risk of leakage

Pending Publication Date: 2018-10-02
江苏腾驰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still defects in the current existing technology. Since the sealing device has been in a high-temperature and high-pressure environment for a long time, after a long time of use, the interface will still suffer from stress wear and leakage, which has always affected the service life of the workpiece.

Method used

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  • Dual sealing device for high-pressure pipeline in automobile engine
  • Dual sealing device for high-pressure pipeline in automobile engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, a double sealing device for high-pressure pipelines in automobile engines includes a pier type adapter device 1, a double threaded joint 2, a lock nut 3, a flange A4 and a flange B5, wherein the The pier head type adapter device 1 includes a pipe body with a hollow structure, one end of the pipe body has a pier head 6 structure, and the other end communicates with the high-pressure pipeline, and the tail end of the pier head 6 has a spherical step 8; The double-threaded joint 2 has a hollow structure, and one end face is provided with a concave hole 7 that matches the pier head 6 of the pier head type adapter device 1. There is a gap between the concave hole 7 and the pier head 6 that can realize the relative rotation of the two. The mating surface of this end is fitted with a flange A4 on the external thread; the lock nut 3 is coaxially set on the pipe body of the pier type adapter device 1, and the internal thread of the lock nut 3 is connec...

Embodiment 2

[0029] Such as figure 2 , a double sealing device for high-pressure pipelines in automobile engines, including a pier type adapter device 1, a double threaded joint 2, a lock nut 3, a flange A4 and a flange B5, wherein the pier The head type adapter device 1 includes a pipe body with a hollow structure, one end of the pipe body has a pier head 6 structure, and the other end communicates with the high-pressure pipeline, and the tail end of the pier head 6 has a spherical step 8; The threaded joint 2 has a hollow structure, and one end surface is provided with a concave hole 7 that cooperates with the pier head 6 of the pier head type adapter device 1. There is a cooperation between the concave hole 7 and the pier head 6 that can realize the relative rotation of the two. On the surface, a flange A4 is set on the external thread of this end; the lock nut 3 is coaxially set on the pipe body of the pier type adapter device 1, and the internal thread of the lock nut 3 is matched wi...

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Abstract

The invention relates to a pipeline connector sealing device, in particular to a dual sealing device for a high-pressure pipeline in an automobile engine. The dual sealing device comprises an upset head type through-connection device, a double thread connector, a locking nut, a flange plate A and a flange plate B. The upset head type through-connection device and the double thread connector are ina dual sealing connection relation after the locking nut is tightened, preliminary seal is formed through a concave hole and an upset head, secondary seal is formed between a spherical step and a protrusion, and the self-adaptation capability between matched faces is high so that the oil pipe leakage risk can be reduced. The flange plate A and the flange plate B have a locking strengthening function on the locking nut, the sealing effect between the upset head type through-connection device and the double thread connector is guaranteed, and after long-time usage, the fine adjustment functioncan be achieved; and the leakage risks after long-time usage are prevented, the flange plate A and the flange plate B can be matched with rubber gaskets, and the sealing strengthening effect is achieved at the two ends of the locking nut.

Description

technical field [0001] The invention relates to a sealing device for pipeline joints, in particular to a double sealing device for high-pressure pipelines in automobile engines. Background technique [0002] At this stage, the working pressure of the high-pressure pipeline of the new hybrid electric vehicle is getting higher and higher, and the risk of pipeline leakage is also increasing. The traditional high-pressure pipeline is connected with the flared double-threaded joint in the way of conical sealing. The disadvantage is that the self-adaptive ability of the conical pier head is poor and leakage is prone to occur. [0003] Patent CN2007200132769 provides a mechanism for interconnecting pipelines for transporting substances in the mechanical field, specifically a high-pressure pipeline sealing connection device and a sealing gasket. The sealing chamber connecting pipe and the sealing ring connecting pipe are fastened and connected by a tightening sleeve, and a sealing ...

Claims

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Application Information

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IPC IPC(8): F16L23/22F16L23/16
CPCF16L23/16F16L23/22
Inventor 王剑锋陈杰王剑阳
Owner 江苏腾驰科技有限公司
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