阅读说明：本技术 耐高低温活塞蓄能器 (High and low temperature resistant piston energy accumulator ) 是由 潘桂德 *** 李文娜 黄颂丽 于 2018-06-08 设计创作，主要内容包括：本发明公开了一种耐高低温活塞蓄能器,它涉及蓄能器技术领域。包括壳体、端盖、U型圈和活塞,壳体两端设置有端盖,壳体内部通过U型圈设置有活塞；所述的U型圈包括不锈钢骨架和变性PTFE,不锈钢骨架外部包裹有变性PTFE。本发明结构设计合理,密封性能好,具有耐高低温的效果,使用寿命长。(The invention discloses a high and low temperature resistant piston energy accumulator, and relates to the technical field of energy accumulators. The piston type air conditioner comprises a shell, end covers, a U-shaped ring and a piston, wherein the end covers are arranged at two ends of the shell, and the piston is arranged in the shell through the U-shaped ring; the U-shaped ring comprises a stainless steel framework and modified PTFE, wherein the modified PTFE is wrapped outside the stainless steel framework. The invention has reasonable structural design, good sealing performance, high and low temperature resistance and long service life.)

1. The high and low temperature resistant piston energy accumulator is characterized by comprising a shell (1), end covers (2), a U-shaped ring (3) and a piston, wherein the end covers (2) are arranged at two ends of the shell (1), and the piston is arranged in the shell (1) through the U-shaped ring (3); the U-shaped ring (3) comprises a stainless steel framework (3-1) and modified PTFE (3-2), wherein the modified PTFE (3-2) is wrapped outside the stainless steel framework (3-1).

2. The high and low temperature resistant piston accumulator according to claim 1, characterized in that the housing (1) is a 304 stainless steel housing.

3. The piston accumulator of claim 1, characterized in that the housing (1) and the end cap (2) are fixed by a sealing device and a nut.

4. High and low temperature resistant piston accumulator according to claim 1, characterized in that two U-rings (3) are provided, and the two U-rings (3) are open facing away from each other.

Technical Field

The invention relates to the technical field of energy accumulators, in particular to a high and low temperature resistant piston energy accumulator.

Background

The accumulator is an indispensable auxiliary device in the hydraulic system, can play the roles of buffering and noise reduction, and can save a large amount of energy, so the accumulator is widely applied to the hydraulic system. According to the structural division of the energy accumulator, the conventional energy accumulator products mainly comprise a bag type energy accumulator and a piston type energy accumulator, wherein the bag type energy accumulator cannot bear frequent pressure fluctuation and larger load, otherwise, the bag type energy accumulator is easy to cause a leather bag rupture accident, and the piston type energy accumulator well makes up the defects of the bag type energy accumulator.

The injection seal on the piston of the traditional piston accumulator adopts fluororubber, the service temperature of the fluororubber is not more than 160 ℃, the sealing effect is general, and the service performance of the accumulator is greatly reduced, so that the prior piston accumulator needs to be improved.

In conclusion, the invention designs the high and low temperature resistant piston energy accumulator.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a high and low temperature resistant piston energy accumulator which is reasonable in structural design, good in sealing performance, long in service life and capable of resisting high and low temperatures.

In order to achieve the purpose, the invention is realized by the following technical scheme: the high and low temperature resistant piston energy accumulator comprises a shell, end covers, a U-shaped ring and a piston, wherein the end covers are arranged at two ends of the shell, and the piston is arranged in the shell through the U-shaped ring; the U-shaped ring comprises a stainless steel framework and modified PTFE, wherein the modified PTFE is wrapped outside the stainless steel framework.

Preferably, the shell is a 304 stainless steel shell.

Preferably, the housing and the end cap are fixed by a sealing device and a nut.

Preferably, the number of the U-shaped rings is two, and the openings of the two U-shaped rings are arranged oppositely.

The invention has the beneficial effects that: structural design is reasonable, and sealing performance is good, has the effect of high low temperature resistant, long service life.

Drawings

The invention is described in detail below with reference to the drawings and the detailed description;

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Referring to fig. 1, the following technical solutions are adopted in the present embodiment: the high and low temperature resistant piston energy accumulator comprises a shell 1, end covers 2, a U-shaped ring 3 and pistons, wherein the end covers 2 are arranged at two ends of the shell 1, and the pistons are arranged in the shell 1 through the U-shaped ring 3; the U-shaped ring 3 comprises a stainless steel framework 3-1 and modified PTFE3-2, wherein the modified PTFE3-2 is wrapped outside the stainless steel framework 3-1.

It is noted that the housing 1 is a 304 stainless steel housing.

It should be noted that the housing 1 and the end cap 2 are fixed by a sealing device and a nut.

In addition, the U-shaped rings 3 are provided with two, and the openings of the two U-shaped rings 3 are arranged oppositely.

the injection seal on the traditional piston is replaced by the U-shaped ring in the specific embodiment, and the stainless steel framework is arranged inside the U-shaped ring, and the modified PTFE is wrapped outside the U-shaped ring, so that the piston can be used in an environment of-70-260 ℃, the working requirement of high temperature resistance of the energy accumulator is met, the using effect is good, and the service life of the energy accumulator is greatly prolonged.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.