Piston assembly and application thereof

A piston assembly and piston technology, applied in the field of compressors, can solve the problems of diaphragm rupture, eccentric wear of the piston assembly, and seal failure, and achieve the effect of solving the eccentric wear of the piston.

Active Publication Date: 2020-11-10
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the actual processing and assembly process, there will be problems of poor alignment between the piston assembly and the piston assembly cylinder, resulting in partial wear of the piston assembly, seal failure, and excessive leakage of hydraulic oil through the piston assembly, resulting in too little hydraulic oil in the oil chamber. The diaphragm hits the oil cylinder, and the problem of diaphragm rupture is prone to occur. This application provides a piston assembly and its application

Method used

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  • Piston assembly and application thereof
  • Piston assembly and application thereof
  • Piston assembly and application thereof

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Embodiment Construction

[0034] Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. According to these detailed descriptions, those skilled in the art can clearly understand the present application and can implement the present application. Without departing from the principle of the present application, the features in different embodiments can be combined to obtain new implementations, or some features in certain embodiments can be replaced to obtain other preferred implementations.

[0035] The crosshead 1 is a part connecting the piston rod and the piston, which converts the rotary motion of the crankshaft into the reciprocating motion of the piston, and has a guiding effect.

[0036] see Figure 1~4 , the application provides a piston assembly, including a crosshead member, a piston member and a middle body member 3, the crosshead member is connected with the piston member, the crosshead member is connected with the...

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PUM

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Abstract

The invention belongs to the technical field of compressors, and particularly relates to a piston assembly and application thereof. In an actual production process, the phenomena of poor final centering between a piston and a piston cylinder, eccentric wear of the piston and sealing failure due to insufficient machining precision easily occur. The piston assembly provided by the invention comprises a crosshead component, a piston component and a middle body component, wherein the piston component comprises a piston rod; one end of the piston rod is connected to a crosshead and a displacement component is arranged at a joint of the two, so that the piston rod has a certain radial displacement; and the other end of the piston rod is connected to the piston in a joint mode, so that the pistonrod has a certain deflection, and good centering between the piston and the piston cylinder is guaranteed. A piston pull-back rod is arranged at the end, connected to the piston, of the piston rod, and when the intake pressure is too small to push the piston to move downwards or the piston is blocked, the piston pull-back rod can pull the piston to continue to do regular reciprocating motion.

Description

technical field [0001] The application belongs to the technical field of compressors, and in particular relates to a piston assembly and its application. Background technique [0002] Diaphragm compressor is a positive displacement compressor. Because of its good sealing performance, wide pressure range and large compression ratio, it is widely used in petrochemical fields such as hydrogenation stations to compress and transport various high-purity gases, Precious and rare gases, toxic and harmful gases and corrosive gases. [0003] Diaphragm compressor structure, including crankcase assembly, crankshaft assembly, connecting rod assembly, crosshead slideway, crosshead, middle body assembly, piston assembly rod fixing flange, piston assembly rod lock nut, piston assembly rod, piston assembly cylinder , Piston assembly, membrane head assembly. The crankshaft assembly is arranged in the crankcase assembly via bearings. The big end and the small end of the connecting rod are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B45/053F04B53/14
CPCF04B45/0533F04B53/14F04B53/144
Inventor 贾晓晗任省栋闫百岁李雪莹彭学院
Owner XI AN JIAOTONG UNIV
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