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A sealing ring for a piston in a launcher of a pneumatic Hopkinson device

A launching device, a pneumatic technology, applied in the field of Hopkinson, can solve the problems of not simply releasing the gas, the joint surface of the piston and the cylinder wall cannot be kept in an open state, and the explosion effect is not obvious, so as to achieve low cost and easy repair or replacement. , the effect of simple structure

Active Publication Date: 2017-07-04
LUOYANG LIWEI TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems that the existing pneumatic Hopkinson equipment piston often has the problem that the joint surface between the piston and the cylinder wall cannot be kept in a good opening state, and the gas release is not crisp, which leads to the problem that the explosion effect is not obvious. The present invention provides a pneumatic Hopkinson equipment. The sealing ring of the piston in the launching device of the Pukinson equipment solves the above problems by using a simple mechanism improvement

Method used

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  • A sealing ring for a piston in a launcher of a pneumatic Hopkinson device
  • A sealing ring for a piston in a launcher of a pneumatic Hopkinson device

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Embodiment Construction

[0010] Such as Figure 1~2 The sealing ring of the piston in the pneumatic Hopkinson equipment launching device has a technical solution: the front end of the piston 2 is symmetrically arranged in a wedge-shaped structure, and a deep groove is provided on the wedge surface 5 of the piston, and the deep groove Set the elastic sealing body 3; the contact part of the cylinder 1 and the piston 2 is the piston-cylinder joint surface 4, which is set as an inclined surface, the angle corresponds to the piston wedge surface 5; the angle α between the piston wedge surface 5 and the front end surface of the piston 2 is 45°~65°.

[0011] The material of the elastic sealing body 3 is any one of rubber, polyurethane, nylon, and polytetrafluoroethylene.

[0012] The above are the specific embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications...

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Abstract

In order to solve the problem that the burst effect is not obvious as a combined surface of the piston and a cylinder wall is not kept in good open state and the gas release is not smooth in the work of current pneumatic type Hopkinson equipment, the invention provides a sealing ring for a piston in a pneumatic type Hopkinson equipment emitting device. According to the technical scheme adopted by the invention, the front end of the piston is symmetrically arranged into wedge-shaped structures, and a deep groove is formed in the wedge-shaped surface of the piston; an elastic sealing body is arranged in the deep groove; a contact part of the cylinder body and the piston is a jointed surface of the piston and the cylinder body, arranged into an inclined surface, and the angle corresponds to the wedge-shaped surface of the piston. According to the sealing ring disclosed by the invention, the contact surface of the piston and the cylinder body is optimized as a wedge-shaped plane from a plane to realize fit, so that on one hand, the space can be effectively salved, the gas can be quickly released and the burst effect is obvious. The sealing device is simple in structure and low in cost, and the piston is easy to replace after wearing, so that the cost is greatly reduced.

Description

Technical field [0001] The invention relates to the Hopkinson field, in particular to a sealing ring of a piston in a pneumatic Hopkinson device launcher. Background technique [0002] Most materials exhibit a certain degree of load rate or strain rate sensitivity in terms of strength and other mechanical properties. The strain rate effect of material mechanical properties caused by high-amplitude short-duration pulses and loads is important for structures that resist dynamic loads. Design and analysis are very important. These dynamic loads come from many military and civilian events such as conventional weapon penetration and explosions, accidental explosions, and high-speed impacts. Hopkinson rods are recognized as the most commonly used and most effective research impulse dynamic loads. The experimental equipment for the mechanical properties of materials is not only suitable for compression tests, but also for successful tensile, shear and friction and wear tests, and can be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/02
Inventor 徐可立
Owner LUOYANG LIWEI TECH
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