阅读说明：本技术 一种自动变容恒压输出的储气装置 (Automatic gas storage device of varactor constant voltage output ) 是由 钟涌 廖振洋 李理 罗义成 段金鑫 李贤� 徐燕 张方杰 陈柳吉 徐先富 于 2019-09-10 设计创作，主要内容包括：本发明公开了一种自动变容恒压输出的储气装置。该储气装置包括竖直放置的筒体和筒体上、下两端通过连接螺栓固定的端盖,筒体内还安装有活塞,活塞上安装有导向耐磨环和活塞O型圈,端盖上安装有端盖O型圈,上端的端盖上开有上充放气孔,下端的端盖上开有下充放气孔。本发明的自动变容恒压输出的储气装置能够适用于不同压力等级的工作介质存储；储气装置容积可变,工作介质基本可以放尽,尤其适用于低压大容积储气装置,可有效避免储气装置留存气体过多的问题；储气装置排气时能保证排气压力恒定,利于后续设备工作稳定。(The invention discloses an automatic variable-capacitance constant-voltage output gas storage device. The gas storage device comprises a vertically arranged cylinder body and end covers fixed at the upper end and the lower end of the cylinder body through connecting bolts, a piston is further installed in the cylinder body, a guide wear-resisting ring and a piston O-shaped ring are installed on the piston, an end cover O-shaped ring is installed on the end cover, an upper charging and discharging hole is formed in the end cover at the upper end, and a lower charging and discharging hole is formed in the end cover at the lower end. The automatic variable-volume constant-pressure output gas storage device can be suitable for storing working media with different pressure grades; the volume of the gas storage device is variable, the working medium can be basically exhausted, the gas storage device is particularly suitable for low-pressure large-volume gas storage devices, and the problem that the gas reserved in the gas storage device is too much can be effectively avoided; the air storage device can ensure constant exhaust pressure when exhausting, and is beneficial to stable work of subsequent equipment.)

1. The utility model provides an automatic gas storage device of varactor constant voltage output which characterized in that: the gas storage device comprises a vertically arranged cylinder body (4) and end covers (1) fixed at the upper end and the lower end of the cylinder body (4) through connecting bolts (2), a piston (5) is further installed in the cylinder body (4), a guide wear-resisting ring (7) and a piston O-shaped ring (6) are installed on the piston (5), an end cover O-shaped ring (8) is installed on the end cover (1), an upper gas charging and discharging hole (9) is formed in the end cover (1) at the upper end, and a lower gas charging and discharging hole (3) is formed in the end cover (1) at the lower end;

end cap (1): the gas storage tank is formed together with the cylinder body (4), and the upper part and the lower part of the end cover (1) are respectively provided with one end;

connecting bolt (2): is used for connecting the end cover (1) and the cylinder body (4);

lower inflation/deflation hole (3): the piston (5) is controlled to move up and down by charging, emptying or evacuating the working medium;

barrel (4): the gas storage tank body is formed together with the end cover (1);

piston (5): the air storage tank is arranged in the cylinder body (4) and is sealed by a piston O-shaped ring (6), and the air storage tank is divided into an upper part and a lower part;

piston O-ring (6): the sealing device is used for sealing between the piston (5) and the cylinder (4), and 2 sealing steps are adopted to ensure the sealing effect;

guiding wear-resistant ring (7): the support ring of the piston (5) is used for guiding and supporting the piston (5);

end cap O-ring (8): the sealing device is used for sealing between the end cover (1) and the cylinder body (4);

upper inflation/deflation hole (9): and (4) charging and discharging air.

2. The automatic gas storage device with variable volume and constant voltage output according to claim 1, wherein the upper and lower ends of the cylinder (4) are provided with temperature sensors and temperature displays for displaying.

3. The automatic gas storage device with variable volume and constant voltage output according to claim 1, wherein the upper and lower ends of the cylinder (4) are provided with pressure sensors and pressure displays for displaying.

4. The automatic gas storage device with variable volume and constant pressure output according to claim 1, wherein the upper and lower surfaces of the piston (5) are provided with grooves.

Technical Field

The invention belongs to the technical field of ultrahigh-speed wind tunnel tests, and particularly relates to an automatic variable-volume constant-pressure output gas storage device.

Background

In the gas storage equipment, generally use fixed volume gas storage device, but fixed volume gas storage device has following two problems, and first, in the exhaust process, just can not continue to exhaust after the pressure is low to a definite value and make the gas storage device reserve the problem that gas is more, this problem is especially outstanding among low pressure large capacity gas storage device. And secondly, the problem that the pressure of the gas storage device with fixed volume can continuously decrease in the exhaust process.

Disclosure of Invention

The invention aims to solve the technical problem of providing an automatic variable-volume constant-voltage output gas storage device.

The invention relates to an automatic variable-volume constant-voltage output gas storage device, which is characterized in that: the gas storage device comprises a vertically arranged cylinder body and end covers fixed at the upper end and the lower end of the cylinder body through connecting bolts, a piston is further arranged in the cylinder body, a guide wear-resisting ring and a piston O-shaped ring are arranged on the piston, an end cover O-shaped ring is arranged on the end cover, an upper charging and discharging hole is formed in the end cover at the upper end, and a lower charging and discharging hole is formed in the end cover at the lower end;

end cover: the air storage tank is formed together with the cylinder body, and the upper part and the lower part of the end cover are respectively provided with one end cover;

connecting bolts: the connecting device is used for connecting the end cover and the cylinder body;

a lower air filling and discharging hole: the piston is controlled to move up and down by inflation, emptying or evacuation of working media;

barrel: the gas storage tank body is formed together with the end cover;

a piston: the air storage tank is arranged in the cylinder body and is sealed by a piston O-shaped ring, and the air storage tank is divided into an upper part and a lower part;

piston O-shaped ring: the sealing device is used for sealing between the piston and the cylinder body, and 2 sealing steps are adopted to ensure the sealing effect;

guiding the wear-resistant ring: the support ring of the piston is used for guiding and supporting the piston;

end cover O-shaped ring: the end cover is used for sealing the cylinder body;

an upper air filling and discharging hole: and (4) charging and discharging air.

And the upper end and the lower end of the cylinder body are provided with temperature sensors and temperature displays for displaying.

And the upper end and the lower end of the cylinder body are provided with pressure sensors and pressure displays for displaying.

The upper surface and the lower surface of the piston are provided with grooves.

The middle piston of the automatic variable-volume constant-pressure output gas storage device has enough mass, and the piston can overcome the friction force generated by the O-shaped ring and the guide wear-resisting ring of the piston to freely move downwards when the pressures of the upper part and the lower part of the piston are equal. The piston divides the gas storage device into an upper part and a lower part, and the upper part and the lower part cannot be communicated with each other due to the sealing effect of the O-shaped ring of the piston. The lower air charging and discharging hole of the air storage device is connected with a working medium, and the working medium can be charged or discharged from the hole. The upper air charging and discharging hole of the air storage device is connected with working air, and the air can be charged or discharged. When the gas storage device stores gas, the working medium enters from the lower gas charging and discharging hole, and the piston continuously moves upwards along with the increase of the pressure until the piston abuts against the end cover at the upper end. When the air storage device exhausts air, when the pressure of the working medium is reduced and the generated thrust is not enough to jack the piston, the piston can slowly descend from the top end of the air storage device until the piston stops at the end cover at the lower end. Therefore, the volume change of the gas storage device is realized through the up-and-down movement of the piston, and the purpose of reducing the retained gas as much as possible is also achieved.

The piston mass in the automatic variable volume constant pressure output air storage device cannot be too large, so the pressure generated only by the weight of the piston is necessarily smaller, namely the exhaust pressure of the air storage device is very low, and if higher exhaust pressure is needed, high-pressure air can be filled in the upper air charging and discharging hole, so that the exhaust pressure of the air storage device can be increased. When the pressure of the charged high-pressure air is constant and the piston is not in contact with the upper end cover and the lower end cover of the air storage device, the exhaust pressure of the air storage device is constant.

The automatic variable-volume constant-pressure output gas storage device can be suitable for storing working media with different pressure grades; the volume of the gas storage device is variable, the working medium can be basically exhausted, the gas storage device is particularly suitable for low-pressure large-volume gas storage devices, and the problem that the gas reserved in the gas storage device is too much can be effectively avoided; the air storage device can ensure constant exhaust pressure when exhausting, and is beneficial to stable work of subsequent equipment.

Drawings

Fig. 1 shows an automatic variable volume constant voltage output gas storage device according to the present invention.

In the figure, 1, an end cover 2, a connecting bolt 3, a lower air charging and discharging hole 4, a cylinder 5, a piston 6, a piston O-shaped ring 7, a guide wear-resisting ring 8, an end cover O-shaped ring 9 and an upper air charging and discharging hole are arranged.

Detailed Description

As shown in fig. 1, the automatic variable-volume constant-pressure output gas storage device of the invention comprises a vertically arranged cylinder 4 and an end cover 1 fixed at the upper and lower ends of the cylinder 4 through connecting bolts 2, wherein a piston 5 is also arranged in the cylinder 4, a guide wear-resisting ring 7 and a piston O-ring 6 are arranged on the piston 5, an end cover O-ring 8 is arranged on the end cover 1, an upper inflation and deflation hole 9 is arranged on the end cover 1 at the upper end, and a lower inflation and deflation hole 3 is arranged on the end cover 1 at the lower end;

end cap 1: the gas storage tank is formed together with the cylinder body 4, and the upper end and the lower end of the end cover 1 are respectively provided with one gas storage tank;

the connecting bolt 2: is used for connecting the end cover 1 and the cylinder body 4;

lower inflation and deflation hole 3: the piston 5 is controlled to move up and down by charging, emptying or evacuating the working medium;

and (3) barrel 4: the gas storage tank body is formed together with the end cover 1;

piston 5: the air storage tank is arranged in the cylinder body 4 and is sealed by a piston O-shaped ring 6, and the air storage tank is divided into an upper part and a lower part;

piston O-ring 6: the sealing device is used for sealing between the piston 5 and the cylinder 4, and 2 sealing steps are adopted to ensure the sealing effect;

guide wear-resistant ring 7: the support ring of the piston 5 is used for guiding and supporting the piston 5;

end cover O-ring 8: the sealing device is used for sealing between the end cover 1 and the cylinder body 4;

upper air charge and discharge hole 9: and (4) charging and discharging air.

And temperature sensors and temperature displays for displaying are arranged at the upper end and the lower end of the cylinder body 4.

And pressure sensors and pressure displays for displaying are arranged at the upper end and the lower end of the cylinder body 4.

The upper surface and the lower surface of the piston 5 are provided with grooves.