WO2020067587A1

WO2020067587A1 - Control valve apparatus

Info

Publication number: WO2020067587A1
Application number: PCT/KR2018/011421
Authority: WO
Inventors: 강은석; 이추동; 이영삼
Original assignee: 엠티에이치콘트롤밸브(주)
Priority date: 2018-09-27
Filing date: 2018-09-27
Publication date: 2020-04-02
Also published as: JP2022501558A; CN111226067B; CN111226067A; JP7246106B2

Abstract

A control valve apparatus according to the present invention comprises: a driving shaft; a valve housing which includes a first valve chamber filled with a first fluid and a second valve chamber filled with a second fluid; a first port part which is provided at a first side of the valve housing and through which a first fluid is introduced; a second port part which is provided at a second side of the valve housing and through which a second fluid is introduced; a third port part which is provided at a third side of the valve housing and through which the first fluid, the second fluid, or a mixed fluid of the first fluid and the second fluid is discharged; a valve which allows the first fluid to flow from the first valve chamber to the third port part according to a movement of the driving shaft in one direction, and the second fluid to flow from the second valve chamber to the third port part according to a movement of the driving shaft in the other direction; and a damping part which is connected to the driving shaft to offset at least a part of a difference between pressure of the first fluid of the first valve chamber and pressure of the second fluid of the second valve chamber.

Description

Control valve device

The present invention relates to a control valve device.

The control valve device is for controlling the flow of fluid, and fluid can flow in and out through a plurality of port portions.

In such a general control valve device, since fluid flows through a plurality of port parts, the pressure of the fluid flowing into each of the port parts may be different.

When the pressures flowing into the port portions are different from each other, a disk chattering phenomenon may occur due to a pressure difference, and the disk chattering phenomenon may adversely affect the operation of the control valve device.

Therefore, research is being conducted on a control valve device capable of reducing the disk chattering phenomenon.

Control valve device according to an embodiment of the present invention is to prevent the disk chattering phenomenon.

The subject matter of the present application is not limited to the subject matter mentioned above, and another subject not mentioned will be clearly understood by a person skilled in the art from the following description.

According to one aspect of the invention, the drive shaft; A valve housing having a first valve chamber filled with a first fluid and a second valve chamber filled with a second fluid therein; A first port portion provided on the first side of the valve housing to communicate with the first valve chamber and into which the first fluid flows; A second port portion provided on the second side of the valve housing to communicate with the second valve chamber and into which the second fluid flows; A third port portion provided on a third side of the valve housing to discharge the first fluid, the second fluid, or a mixed fluid of the first fluid and the second fluid; The first fluid flows from the first valve chamber to the third port part according to the one-way movement of the drive shaft, and the second fluid flows from the second valve chamber to the third port part according to the other direction movement of the drive shaft. A valve to flow; And a damping part connected to the drive shaft to cancel at least a portion of a difference between the pressure of the first fluid in the first valve chamber and the pressure of the second fluid in the second valve chamber. .

The damping unit includes a damping housing having one side through which the drive shaft passes, and a separation partition wall provided inside the damping housing and connected to the drive shaft and dividing the inner space of the damping housing into a first damping space and a second damping space. can do.

The separation partition wall may be connected to an end of the driving shaft.

The drive shaft may penetrate the one side and the other side of the damping housing and the damping housing may be located outside the valve housing.

A communication hole communicating the first damping space and the second damping space may be formed in the separation partition wall.

The width of the separation partition wall is smaller than the inner width of the damping housing, and the communication hole communicating the first damping space and the second damping space may be formed between the separation partition wall and the inner surface of the damping housing.

A communication hole may be formed in the damping housing so that the inside of the damping housing communicates with the outside of the damping housing.

An uncompressed fluid may be filled in the damping housing.

When the first damping space and the second damping space are separated from each other by the separation barrier, a compressed fluid may be filled in the damping housing.

The control valve device according to an aspect of the present invention may further include a balancing line connecting one of the first valve chamber and the second valve chamber and the inside of the damping unit.

As the balancing fluid flows through the balancing line to the damping part, a difference in pressure between the first pressure in the first valve chamber and the second pressure in the second valve chamber may be lowered.

The valve includes an opening / closing member coupled to the driving shaft, and the opening / closing member may open or close the first opening of the first valve chamber or the second opening of the second valve chamber according to the movement of the driving shaft. .

Control valve device according to an embodiment of the present invention is to prevent the disk chattering phenomenon by including a balancing line.

Control valve device according to an embodiment of the present invention is to prevent the disk chattering phenomenon by including a damping portion.

The effects of the present application are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a plan view of a control valve device according to an embodiment of the present invention.

2A to 2D show cross-sectional views of a control valve device according to an embodiment of the present invention.

FIG. 3 shows a cross-sectional view along C1-C2 in FIG. 1.

4 shows a typical control valve arrangement.

5 shows an enlarged view of the damping part of FIG. 3.

6 shows a control valve device according to another embodiment of the present invention.

7 shows another modification of the damping portion.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the accompanying drawings are only described to more easily disclose the contents of the present invention, and the scope of the present invention is not limited to the scope of the attached drawings, and it is easily carried out by those skilled in the art. You will know.

In addition, the terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, the terms "include" or "have" are intended to indicate the presence of features, numbers, steps, actions, components, parts or combinations thereof described herein, one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

1 to 3 show a control valve device according to an embodiment of the present invention. 1 is a plan view of a control valve device according to an embodiment of the present invention, and FIGS. 2A to 3 are cross-sectional views taken along lines C1-C2 of FIG. 1.

The control valve device illustrated in FIGS. 2A to 2D includes a damping unit 170 and a balancing line 180.

That is, as shown in FIG. 2A, a balancing line 180 connecting one of the first valve chamber 121 and the second valve chamber 123 and the inside of the damping unit 170 may be included. Accordingly, as the balancing fluid flows through the balancing line 180 to the damping unit 170, the first pressure in the first valve chamber 121 and the second pressure difference in the second valve chamber 123 may be lowered.

For example, the first valve chamber 121 and the second damping space DS2 of the damping unit 170 may be communicated by the balancing line 180. As the pressure P1 of the first valve chamber 121 is greater than the pressure P2 of the second valve chamber 123, the first fluid will be described later through the balancing line 180, the second damping space DS2 ).

That is, when a difference between the pressure P1 of the first valve chamber 121 and the pressure P2 of the second valve chamber 123 occurs, the first fluid is subjected to the second damping through the balancing line 180. It can flow into space DS2. Accordingly, the difference between the pressure P1 and the pressure P2 may be reduced.

In addition, when the separation partition wall 173 receives a force toward the lower side according to the difference between the pressure P1 and the pressure P2, the second damping space DS2 is caused by the first fluid introduced through the balancing line 180. The pressure is also increased, and according to the difference between the pressure (P1) and the pressure (P2), the separation partition wall 173 may offset the force received to the lower side.

On the contrary, although not shown in the drawing, the balancing line 180 may communicate the second valve chamber 123 with the first damping space DS1. Accordingly, when the pressure P2 is higher than the pressure P1, the second fluid flows through the balancing line 180 into the first damping space DS1 to offset the difference between the pressure P1 and the pressure P2. I can do it.

At this time, as shown in FIG. 2A, a communication hole 175 may be formed in the damping housing 171 so that the inside of the damping housing 171 communicates with the outside of the damping housing 171. Since the gas or liquid of the first damping space DS1 may move through the communication hole 175, the difference between the first pressure and the second pressure is gradually reduced, so that the operation of the control valve device can be smoothly performed.

On the other hand, as shown in Figure 2b, the damping housing 171 may have an opening opened toward the valve 160. Since the fluid in the first damping space DS1 can move through the opening, the opening may perform a function similar to the communication hole 175 of FIG. 2A.

Also, as illustrated in FIG. 2C, since the communication hole 175 is not provided in the damping housing 171, the damping housing 171 may be isolated from the second valve chamber 123. In this case, the damping is not smooth compared to the embodiment of FIGS. 2A and 2B, but the pressure of the second damping space DS2 is also increased by the first fluid introduced through the balancing line 180, thereby increasing the pressure P1 and pressure. Depending on the difference in (P2), the separation partition wall 173 may cancel the force received downward.

In addition, as illustrated in FIG. 2D, the opening / closing member 161 on one side of the valve 160 may have a curved surface convex toward the first valve chamber 121. Likewise, the opening / closing member 163 on the other side of the valve 160 may also have a curved surface convex toward the second valve chamber 123.

When the first fluid and the second fluid are introduced into the first valve chamber 121 and the second valve chamber 123, the first fluid and the second fluid flow along the curved surface to form the first fluid and the second fluid. You can make the flow more natural.

Meanwhile, as illustrated in FIGS. 1 and 3, the control valve device according to an embodiment of the present invention includes a drive shaft 110, a valve housing 120, a first port part 130, and a second port part 140, It includes a third port portion 150, the valve 160 and the damping portion 170.

The valve housing 120 has a first valve chamber 121 filled with a first fluid and a second valve chamber 123 filled with a second fluid therein. At this time, the pressure of the first fluid may be P1 and the pressure of the second fluid may be P2. The first fluid and the second fluid are liquid or gas, and may be different materials or the same materials. The first fluid and the second fluid may have different temperatures.

The first port part 130 is provided on the first side of the valve housing 120 so as to communicate with the first valve chamber 121, and the first fluid is introduced.

The second port portion 140 is provided on the second side of the valve housing 120 so as to communicate with the second valve chamber 123, and the second fluid is introduced.

The third port portion 150 is provided on the third side of the valve housing 120 to discharge the first fluid, the second fluid, or the mixed fluid of the first fluid and the second fluid.

The valve 160 causes the first fluid to flow from the first valve chamber 121 to the third port portion 150 according to the one-way movement M1 of the driving shaft 110, and the other movement of the driving shaft 110 (M2) ), The second fluid flows from the second valve chamber 123 to the third port part 150.

3 shows a state in which the valve 160 communicates with the second valve chamber 123 and the third port part 150 due to the other movement M2 of the drive shaft 110. Accordingly, the second fluid may be introduced into the second port portion 140 and out of the third port portion 150.

When the drive shaft 110 moves in one direction in the state of FIG. 3, the first fluid may flow out through the third port portion 150 while the first valve chamber 121 communicates with the third port portion 150. In this process, the first valve chamber 121 and the second valve chamber 123 may be in communication with the third port unit 150 at the same time, so that the mixed fluid of the first fluid and the second fluid is the third port unit. It may be leaked through 150.

The damping unit 170 is connected to the drive shaft 110 to determine the difference between the pressure P1 of the first fluid in the first valve chamber 121 and the pressure P2 of the second fluid in the second valve chamber 123. At least partially offset.

4 shows a typical control valve arrangement. As shown in FIG. 4, the general control valve device does not include the damping portion 170. If the pressure P1 of the first valve chamber 10 due to the first fluid and the pressure P2 of the second valve chamber 20 due to the second fluid are not the same, disc chattering the valve 30 by the pressure difference (disc chattering) may occur.

Compared to such a general control valve device, the control valve device according to an embodiment of the present invention includes a damping part 170 so that the pressure difference can be offset.

As illustrated in FIG. 5, the damping unit 170 may include a damping housing 171 and a separation partition wall 173. The damping housing 171 may have one side through which the drive shaft 110 passes. The separation partition wall 173 is provided inside the damping housing 171 and is connected to the drive shaft 110 and can divide the inner space of the damping housing 171 into a first damping space DS1 and a second damping space DS2. .

The cross-sectional shape of the separation partition wall 173 may be various, such as square, triangular, trapezoidal, or oval. The first damping space DS1 is a space between one side surface of the separating partition wall 173 and the damping housing 171, and the second damping space DS2 is between the other side of the separating partition wall 173 and the damping housing 171. It can be a space.

For example, when the pressure P1 of the first fluid is greater than the pressure P2 of the second fluid, the force applied to the opening / closing member 161 on one side of the valve 160 shown in FIG. 3 is the valve 160 It may be larger than the force applied to the opening / closing member 163 on the other side.

Accordingly, it is possible to receive a force to move the separation partition wall 173 of FIG. 5 downward, but the liquid or gas filled in the second damping space DS2 hinders the movement of the separation partition wall 173, thereby reducing disk chattering. have.

Conversely, when the pressure P1 of the first fluid is smaller than the pressure P2 of the second fluid, the force applied to the opening / closing member 161 on one side of the valve 160 shown in FIG. 3 is opened / closed on the other side of the valve 160 It may be small compared to the force applied to the member 163.

Accordingly, it is possible to receive the force to move the separation partition wall 173 of FIG. 5 upward, but the liquid or gas filled in the first damping space DS1 can prevent the disk chattering phenomenon by interfering with the movement of the separation partition wall 173. have. The opening and closing

members

161 and 163 may be combined with the driving shaft 110.

Meanwhile, as illustrated in FIG. 3, the separation partition wall 173 may be connected to an end of the drive shaft 110. Accordingly, the damping unit 170 may be disposed under the valve 160. Alternatively, as shown in FIG. 6, the driving shaft 110 penetrates one side and the other side of the damping housing 171, and the damping housing 171 may be located outside the valve housing 120.

Meanwhile, as illustrated in FIG. 7, a communication hole 175 may be formed in the damping housing 171 so that the inside of the damping housing 171 communicates with the outside of the damping housing 171.

When the damping housing 171 is located inside the second valve chamber 123 as shown in FIG. 7, the material inside the damping housing 171 is connected to the inside of the damping housing 171 and the second valve chamber 123. The materials inside the second valve chamber 123 may be identical to each other.

Meanwhile, when the communication hole 175 is formed, an uncompressed fluid may be filled in the damping housing 171. When there is a communication hole 175, even if it is an uncompressed fluid, damping is smoothed by the communication hole 175, so that damping can be smoothly performed. The incompressible fluid can be a material whose density is kept constant.

Alternatively, when the first damping space DS1 and the second damping space DS2 are separated from each other by the separation partition wall 173, that is, the first damping space DS1 and the second damping space DS2 are not communicated with each other. If not, the compressed fluid may be filled in the damping housing 171, and the compressed fluid may soften the damping.

Alternatively, a hole communicating the first damping space DS1 and the second damping space DS2 may be formed in the separation partition wall 173. When there is such a hole, the gas or liquid of the first damping space DS1 and the second damping space DS2 can move through the hole, so that the separation barrier 173 due to the difference between the first pressure and the second pressure Damping can be smoothly prevented by rapid movement.

In addition, the width of the separation partition wall 173 is smaller than the inner width of the damping housing 171, so that the first damping space DS1 and the second damping space DS2 are between the separation partition 173 and the inner surface of the damping housing 171. A hole that communicates may be formed. Meanwhile, in the valve 160 described above, the opening / closing

members

161 and 163 open or close the first opening 121a of the first valve chamber 121 or the second valve chamber 123 according to the movement of the driving shaft 110. ) May open and close the second opening 123a. That is, when the driving shaft 110 is lowered, the opening / closing member 161 on one side may block the first opening 121a and the second opening 123a may be opened. Accordingly, the second fluid may flow out through the second valve chamber 123 to the third port unit 150.

Conversely, when the drive shaft 110 rises, the opening / closing member 163 on the other side may open the first opening 121a and the second opening 123a may be closed, and accordingly, the first fluid may pass through the first valve chamber 121. It may be discharged to the third port unit 150.

An actuator (not shown) for moving the driving shaft 110 described above may move the driving shaft 110 through pressure or electromagnetic force of the gas, but is not limited thereto.

* As described above, the embodiments according to the present invention have been examined, and the fact that the present invention may be embodied in other specific forms without departing from its spirit or scope, in addition to the above-described embodiments, has ordinary skill in the art. It is obvious to them. Therefore, the above-described embodiments are to be regarded as illustrative rather than restrictive, and accordingly, the present invention is not limited to the above description and may be changed within the scope of the appended claims and their equivalents.

Claims

driving axle;

A valve housing having a first valve chamber filled with a first fluid and a second valve chamber filled with a second fluid therein;

A first port portion provided on the first side of the valve housing to communicate with the first valve chamber and into which the first fluid flows;

A second port portion provided on the second side of the valve housing to communicate with the second valve chamber and into which the second fluid flows;

A third port portion provided on a third side of the valve housing to discharge the first fluid, the second fluid, or a mixed fluid of the first fluid and the second fluid;

The first fluid flows from the first valve chamber to the third port part according to the one-way movement of the drive shaft, and the second fluid flows from the second valve chamber to the third port part according to the other direction movement of the drive shaft. A valve to flow; And

A damping part connected to the drive shaft to cancel at least a portion of a difference between the pressure of the first fluid in the first valve chamber and the pressure of the second fluid in the second valve chamber

Control valve device comprising a.
According to claim 1,

The damping unit,

It characterized in that it comprises a damping housing having a side through which the drive shaft passes, and is provided inside the damping housing to be connected to the drive shaft and to divide the inner space of the damping housing into a first damping space and a second damping space. Control valve device.
According to claim 2,

Control valve device, characterized in that the separation partition wall is connected to the end of the drive shaft.
According to claim 2,

The drive shaft penetrates the one side and the other side of the damping housing,

The damping housing is a control valve device, characterized in that located on the outside of the valve housing.
According to claim 2,

A control valve device, characterized in that a hole for communicating the first damping space and the second damping space is formed in the separation partition wall.
According to claim 2,

The control valve, characterized in that a hole for communicating the first damping space and the second damping space is formed between the separation partition wall and the inner surface of the damping housing, so that the width of the separation partition wall is smaller than the inner width of the damping housing. Device.
According to claim 2,

A control valve device, characterized in that a communication hole is formed in the damping housing so that the inside of the damping housing communicates with the outside of the damping housing.
The method according to any one of claims 5 to 7,

Control valve device characterized in that the uncompressed fluid is filled in the damping housing.
According to claim 2,

When the first damping space and the second damping space are separated from each other by the separating partition, a control valve device is characterized in that a compressed fluid is filled in the damping housing.
According to claim 1,

The control valve device further comprises a balancing line connecting one of the first valve chamber and the second valve chamber and the damping portion.
The method of claim 10,

The control valve device, characterized in that by lowering the first pressure of the first valve chamber and the second pressure of the second valve chamber by flowing the balancing fluid through the balancing line to the damping portion.
According to claim 1,

The valve includes an opening and closing member coupled to the drive shaft,

The control valve device, characterized in that the opening and closing member opens or closes the first opening of the first valve chamber or the second opening of the second valve chamber according to the movement of the drive shaft.