WO2018050096A1

WO2018050096A1 - Gas passage pressure response system

Info

Publication number: WO2018050096A1
Application number: PCT/CN2017/101779
Authority: WO
Inventors: 陈祥玉; 赵德文; 许振杰; 王剑; 庞伶伶; 王同庆; 李昆; 路新春
Original assignee: 清华大学; 天津华海清科机电科技有限公司
Priority date: 2016-09-14
Filing date: 2017-09-14
Publication date: 2018-03-22
Also published as: CN106439482A; CN106439482B

Abstract

Disclosed is a gas passage pressure response system (100), comprising: a first pressure supply end (110); a first branch (120), wherein the first branch (120) comprises a first pressure-relief valve (121) and a first electric proportional valve (122) which are successively connected, and the first pressure-relief valve (121) is connected to the first pressure supply end (110); a second pressure supply end; a second branch (130), wherein one end of the second branch (130) is connected to the second pressure supply end; a third branch (140), wherein the third branch (140) comprises a first on-off valve (141); an inlet of the first on-off valve (141) is respectively connected to an outlet of the first electric proportional valve (122) and the other end of the second branch (130); and an output end (150), wherein the output end (150) is connected to an outlet of the first on-off valve (141); and a first pressure sensor (142) is provided between the output end (150) and the first on-off valve (141).

Description

Pneumatic pressure response system

Technical field

The present invention relates to a pneumatic pressure response system.

Background technique

In the pneumatic system of the related art, when the gas is input into the designated closed container, the gas in the container cannot quickly reach the required input pressure, and the pressure response of the entire pneumatic system is slow, and the pressure cannot be adjusted quickly and accurately.

Summary of the invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, the present invention proposes a pneumatic pressure response system that is fast in response and capable of rapidly inflating the output.

A pneumatic pressure response system according to the present invention includes: a first pressure supply end; a first branch, the first branch comprising: a first pressure reducing valve and a first electrical proportional valve connected in sequence, the first a pressure reducing valve is connected to the first pressure supply end; a second pressure supply end; a second branch, one end of the second branch is connected to the second pressure supply end; the third branch, the third The branch includes: a first on-off valve, an inlet of the first on-off valve is respectively connected to an outlet of the first electric proportional valve and another end of the second branch; and an output end, the output end Connected to the outlet of the first on-off valve, a first pressure sensor is disposed between the output end and the first on-off valve.

According to the pneumatic pressure response system of the present invention, by providing the first pressure supply end and the second pressure supply end, the flow rate of the pneumatic pressure response system can be significantly increased, and the rapid output of the pneumatic pressure response system can be realized, and finally the first Precise control of the electrical proportional valve to ensure a fast response of the pneumatic pressure response system.

In addition, the pneumatic pressure response system according to the present invention may have the following additional technical features:

According to an embodiment of the invention, the first pressure supply end and the second pressure supply end are both air sources.

According to an embodiment of the present invention, the second branch further includes: a second pressure reducing valve and a second electrical proportional valve connected in sequence, the second pressure reducing valve being connected to the second pressure supply end, The outlet of the second electrical proportional valve is connected to the inlet of the first on-off valve.

According to an embodiment of the invention, the first pressure supply end is a gas source and the second pressure supply end is an accumulator.

According to an embodiment of the invention, the first branch further comprises: a second on-off valve, the second on-off valve being connected to the first electrical proportional valve and placed in the first electrical proportional valve Downstream side.

According to an embodiment of the invention, the second branch further comprises: a third on-off valve, the third on-off valve The port is connected to the outlet of the accumulator and is arranged on the downstream side of the accumulator.

According to an embodiment of the invention, a second pressure sensor is further disposed between the third on-off valve and the accumulator.

According to an embodiment of the invention, the inlet of the accumulator is at the same opening as the outlet of the accumulator.

According to an embodiment of the invention, the first on-off valve, the second on-off valve and the third on-off valve are both solenoid valves.

According to an embodiment of the invention, the inlet of the first on-off valve, the outlet of the second on-off valve and the outlet of the third on-off valve are connected by a three-way valve.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a schematic diagram of a pneumatic pressure response system in accordance with an embodiment of the present invention.

Reference mark:

Pneumatic pressure response system 100,

The first pressure supply end 110,

a first branch 120, a first pressure reducing valve 121, a first electrical proportional valve 122, and a second on-off valve 123,

a second branch 130, a third on-off valve 132, a second pressure sensor 133,

a third branch 140, a first on-off valve 141, a first pressure sensor 142,

Output 150, control center 160, accumulator 170.

detailed description

Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " After, "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship of the "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplified description, and does not indicate or imply the indicated device or component. Must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a The limits of the Ming.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one piece; it may be a mechanical connection, or it may be an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship between two elements. Unless otherwise expressly defined. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

The pneumatic pressure response system 100 of the embodiment of the present invention will be described in detail below with reference to FIG.

The pneumatic pressure response system 100 according to an embodiment of the present invention may include a first pressure supply end 110, a first branch 120, a second pressure supply end, a second branch 130, a third branch 140, and an output 150.

The first branch 120 includes a first pressure reducing valve 121 and a first electrical proportional valve 122 connected in sequence. The air inlet of the first pressure reducing valve 121 is connected to the first pressure supply end 110; the second branch 130 is One end is connected to the second pressure supply end, and the third branch 140 includes a first on-off valve 141. The inlets of the first on-off valve 141 are respectively connected to the outlet of the first electrical proportional valve 122 and the other end of the second branch 130. The output end 150 is connected to the outlet of the first on-off valve 141, and the first pressure sensor 142 is disposed between the output end 150 and the first on-off valve 141.

There are two conveying paths of the gas, and the first branch is: a first pressure supply end 110, a first pressure reducing valve 121, a first electrical proportional valve 122, a first on-off valve 141 and an output end 150; the second branch is: The second pressure supply end, the first on-off valve 141 and the output end 150. The first branch 120 and the second branch 130 may be arranged in parallel.

Since the pneumatic pressure response system 100 of the embodiment of the present invention has the first pressure supply end 110 and the second pressure supply end, the output end 150 can be obtained from the second pressure supply end in addition to the gas obtained from the first pressure supply end 110. The gas is obtained, thereby significantly increasing the flow rate of the pneumatic pressure response system 100, achieving rapid output of the pneumatic pressure response system 100, and finally ensuring the pneumatic pressure response system 100 by precise control of the first electrical proportional valve 122. Quick response.

The first pressure supply end 110 and the second pressure supply end may both be sources of air, whereby the output end 150 can be quickly inflated such that the pressure at the output end 150 quickly meets the requirements.

Further, the second branch 130 may further include: a second pressure reducing valve and a second electrical proportional valve connected in sequence, the second pressure reducing valve is connected to the second pressure supply end, and the outlet of the second electrical proportional valve is first The inlet of the on-off valve 141 is connected.

In some embodiments of the invention, the first pressure supply end may be a gas source, and the second pressure supply end is an accumulator 170, and the accumulator 170 may be coupled to the first pressure supply end.

The first pressure supply end 110 may supplement the accumulator 170 with a gas. When the gas pressure in the accumulator 170 is less than a predetermined value, the first pressure supply end 110 may replenish the accumulator 170 with a specified pressure value.

In some embodiments of the present invention, as shown in FIG. 1, the first branch 120 further includes a second on-off valve 123 connected to the first electrical proportional valve 122 and placed in the first electrical ratio. The downstream side of the valve 122. That is, the inlet of the second on-off valve 123 is connected to the outlet of the first electrical proportional valve 122, and the gas in the first pressure supply end 110 may sequentially pass through the first pressure reducing valve 121, the first electrical proportional valve 122, and the first The two-way shutoff valve 123 enters the third branch 140.

Further, the second branch 130 further includes a third on-off valve 132 whose inlet is connected to the outlet of the accumulator 170 and disposed on the downstream side of the accumulator 170. That is, the inlet of the third on-off valve 132 is connected to the outlet of the accumulator 170, and the gas in the accumulator 170 can sequentially enter the output end 150 through the third on-off and third branch 140.

Preferably, a second pressure sensor 133 is disposed between the third on-off valve 132 and the accumulator 170, and the second pressure sensor 133 can detect the gas pressure in the accumulator 170 when the gas pressure in the accumulator 170 is less than At a predetermined value, the first pressure supply end 110 may replenish the accumulator 170 with gas to ensure that the accumulator 170 has sufficient gas pressure to increase the supply air velocity of the output end 150 when supplying air to the output end 150.

In some embodiments of the invention, as shown in Figure 1, the inlet of the accumulator 170 and the outlet of the accumulator 170 are the same opening. That is, both the supplemental gas to the accumulator 170 and the outward exhaust gas from the accumulator 170 are completed through the opening. When it is detected that the pressure in the accumulator 170 is less than the preset pressure value, the first on-off valve 141 may be closed, and the gas in the first pressure supply end 110 may sequentially pass through the first pressure reducing valve 121 and the first electrical proportional valve. 122. The second on-off valve 123 and the third on-off valve 132 enter the accumulator 170; when the gas pressure in the accumulator 170 is sufficient (ie, when the pressure in the accumulator 170 is higher than the output end 150) During the pressure, the accumulator 170 can be inflated with the first pressure supply end 110 to the output end 150, and the gas in the accumulator 170 can pass through the third on-off valve 132 and the second on-off valve 123 in sequence. The output 150 is configured to achieve rapid inflation of the output 150.

When the first on-off valve 141 is closed, the second on-off valve 123 and the third on-off valve 132 are opened, the first electrical proportional valve 122 is opened, and the accumulator can be adjusted by adjusting the output pressure of the first electrical proportional valve 122. The pressure of 170, when the second pressure sensor 133 detects that the pressure in the accumulator 170 reaches a preset value, the first on-off valve 141 and the second on-off valve 123 are closed.

When the second on-off valve 123 is closed, the first on-off valve 141 and the third on-off valve 132 are open, the accumulator 170 is electrically connected to the output end 150, and the output end 150 can be inflated only by the accumulator 170; When the three-way shut-off valve 132 is closed, the first on-off valve 141 and the second on-off valve 123 are opened, the first electric proportional valve 122 is opened, and the gas pressure of the output end 150 can be precisely adjusted by the first electric proportional valve 122.

When the first on-off valve 141, the second on-off valve 123, and the third on-off valve 132 are both open, the first pressure supply end 110 and the accumulator 170 can simultaneously inflate the output end 150, thereby implementing the output end 150. Quickly inflated.

The pneumatic pressure response system 100 according to an embodiment of the present invention may further include a control center 160 that may be coupled to the first on-off valve 141, the second on-off valve 123, the third on-off valve 132, and the first pressure sensor 142. Connected with the second pressure sensor 133, the first on-off valve 141, the second on-off valve 123 and the third on-off valve 132 can be controlled by the pressure detected by the first pressure sensor 142 and the second pressure sensor 133. stop.

The first on-off valve 141, the second on-off valve 123, and the third on-off valve 132 may both be solenoid valves, and the inlet of the first on-off valve 141, the outlet of the second on-off valve 123, and the third on-off valve The outlet of 132 is connected by a three-way valve.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

A pneumatic pressure response system, comprising:

a first pressure supply end;

a first branch, the first branch includes: a first pressure reducing valve and a first electrical proportional valve connected in sequence, the first pressure reducing valve being connected to the first pressure supply end;

a second pressure supply end;

a second branch, one end of the second branch is connected to the second pressure supply end;

a third branch, the third branch comprising: a first on-off valve, an inlet of the first on-off valve being respectively connected to an outlet of the first electrical proportional valve and another end of the second branch ;as well as

The output end is connected to an outlet of the first on-off valve, and a first pressure sensor is disposed between the output end and the first on-off valve.
The pneumatic pressure response system according to claim 1, wherein said first pressure supply end and said second pressure supply end are both air sources.
The pneumatic pressure response system according to claim 2, wherein said second branch further comprises: a second pressure reducing valve and a second electrical proportional valve connected in sequence, said second pressure reducing valve and said The second pressure supply end is connected, and the outlet of the second electrical proportional valve is connected to the inlet of the first on-off valve.
The pneumatic pressure response system according to claim 1, wherein said first pressure supply end is a gas source and said second pressure supply end is an accumulator.
The pneumatic pressure response system according to any one of claims 4 to 4, wherein the first branch further comprises: a second on-off valve, the second on-off valve and the first electrical proportional valve Connected and placed on the downstream side of the first electrical proportional valve.
The pneumatic pressure response system according to claim 5, wherein said second branch further comprises: a third on-off valve, said inlet of said third on-off valve being connected to an outlet of said accumulator And disposed on the downstream side of the accumulator.
The pneumatic pressure response system according to claim 6, wherein a second pressure sensor is further disposed between the third on-off valve and the accumulator.
The pneumatic pressure response system according to claim 4, wherein the inlet of the accumulator and the outlet of the accumulator are the same opening.
The pneumatic pressure response system according to claim 6, wherein said first on-off valve, said second on-off valve, and said third on-off valve are both solenoid valves.
The pneumatic pressure response system according to claim 6, wherein the inlet of the first on-off valve, the outlet of the second on-off valve, and the outlet of the third on-off valve pass through a three-way valve Connected.