WO2016129903A1

WO2016129903A1 - Valve device

Info

Publication number: WO2016129903A1
Application number: PCT/KR2016/001328
Authority: WO
Inventors: 박문수
Original assignee: 동주에이피 주식회사
Priority date: 2015-02-10
Filing date: 2016-02-05
Publication date: 2016-08-18
Also published as: KR20160105549A

Abstract

A valve device according to an embodiment of the present invention comprises: a valve body providing a passage in which fluid that enters through a first inlet flows to an outlet, and a passage in which fluid that enters through a second inlet flows to an outlet; a stem inserted in the valve body and controlling the flow of fluid passing through the valve body according to the angle of rotation thereof; and a controller attached to the stem to control the flow of fluid between the first inlet and the second inlet, wherein the flow of fluid can be precisely controlled.

Description

Valve device

The present invention relates to a valve device.

A general valve device is used to open or close a tube in order to block or circulate a flow of a fluid flowing inside the tube, for example, in a flow path of a fluid through which a fluid such as liquid, powder, gas, etc. flows.

Valve devices located in such fluid passageways may be gate valves, butterfly valves, depending on the source of operation therein (e.g., with a built-in knife, disc, or ball that implements sealing or circulating the tube). It can be divided into ball valve, disc valve and so on.

Here, the butterfly valve or the ball valve can open or close the moving passage of the fluid through rotation. Here, the flow rate of the flowing fluid may vary according to the rotation angle of the valve. Thus, by precisely controlling the rotation of the valve, the flow of the fluid can be precisely regulated.

However, when the fluid is introduced into the valve device through the plurality of inlets, the flow of the fluid introduced through one inlet may limit the flow of the fluid introduced through the other inlet. For example, the flow rate of the fluid actually flowing through the valve may differ from the target flow rate. Accordingly, since the relationship between the rotation angle of the valve and the flow rate of the fluid actually flowing through the valve is different from the expected relationship, there is a problem that the flow of the fluid is not precisely controlled.

One embodiment of the present invention provides a valve device for solving the above problems.

According to an embodiment of the present invention, a valve device includes: a valve body providing a passage through which a fluid entering through a first inlet flows to an outlet and a passage through which a fluid entering through a second inlet flows to an outlet; A stem inserted into the valve body to regulate the flow of fluid through the valve body according to the rotation angle; And a control unit attached to the stem to control the flow of fluid between the first inlet and the second inlet. It may include.

For example, the direction in which the fluid enters through the first inlet and the direction in which the fluid enters through the second inlet are different directions, and the direction in which the fluid flows to the outlet is the direction in which the fluid enters through the first inlet and The fluid may be perpendicular to a direction through which the fluid enters through the second inlet.

For example, the stem may include a semi-cylindrical or hemispherical outer wall formed at one end of the stem to block the flow of fluid, and the controller may include a partition wall disposed in an inner space of the stem formed by the outer wall. It may include.

For example, based on the semi-cylindrical cross section of the outer wall, the partition wall may have a planar shape extending from the center of the outer wall to the center of the semi-cylindrical region 122 forming a cylinder with the outer wall.

For example, based on the semi-cylindrical cross section of the outer wall, the partition wall may be in a planar shape extending from the center of the semi-cylindrical region forming the cylinder with the outer wall toward the outer wall and separated from the outer wall.

For example, the length of the partition wall may be 0.3 or more and 1.5 or less of the cylindrical radius.

For example, the thickness of the controller may become thicker in the direction opposite to the outlet direction of the fluid.

According to an embodiment of the present invention, a valve device includes: a valve body providing a passage through which a fluid entering through a first inlet flows to an outlet and a passage through which a fluid entering through a second inlet flows to an outlet; A stem inserted into the valve body to regulate the flow of fluid through the valve body according to a rotation angle; And a control unit inserted into the stem to control a flow of fluid between the first inlet and the second inlet. It may include.

For example, the stem includes an outer wall formed at one end of the stem to block the flow of fluid, and the control unit includes: a septum inserted into an inner space of the stem formed by the outer wall; And a fastener formed on the partition wall. It includes, the outer wall and the partition wall may be assembled through the fastener.

For example, the stem may be formed at one end of the stem to block the flow of fluid; Grooves formed in the outer wall; The control unit may include a septum inserted into an inner space of the stem formed by the outer wall, and the outer wall and the partition wall may be assembled through the groove.

For example, further comprising a pin connecting the stem and the control unit, the stem includes an outer wall formed at one end of the stem to block the flow of fluid, the control unit of the stem formed by the outer wall A septum inserted into the interior space and perforated, wherein the pin may be driven through the perforated hole in the septum.

For example, one end of the partition wall is fixed to the outer wall, the other end of the partition wall may be fluid relative to the outer wall.

In the valve device according to one embodiment of the present invention, the influence of each other between the fluid flowing through the plurality of inlets is reduced, the flow of the fluid can be precisely controlled.

In addition, the valve device according to an embodiment of the present invention, it is possible to flow a large amount of fluid while controlling the flow rate precisely.

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

FIG. 2 is a diagram illustrating an embodiment of the stem shown in FIG. 1.

3 is an enlarged view of a portion inserted into the valve body in the stem shown in FIG.

4 is a view showing the flow of fluid in the valve device does not include a control unit.

5 to 8 are views illustrating the stem shown in FIG. 3 and the control unit shown in FIG. 1.

9 to 14 is a view showing a stem and a control unit that can be assembled in the valve device according to an embodiment of the present invention.

FIG. 15 is a diagram illustrating an embodiment of a stem and a controller illustrated in FIG. 1.

16 to 17 illustrate the stem and the controller shown in FIG. 15.

FIG. 18 is a diagram illustrating a relationship between an opening degree and a flow rate coefficient of a valve with and without a partition.

19 is a diagram illustrating a flow rate coefficient along a partition wall length.

20 is a diagram illustrating a flow flow along a partition wall length.

DETAILED DESCRIPTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be embodied in other embodiments without departing from the spirit and scope of the invention with respect to one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

Referring to FIG. 1, the valve device 100 may include a valve body 110, a stem 120, and a controller 130.

The valve body 110 may provide a passage through which the fluid entering through the first inlet 1 flows to the outlet 3 and a passage through which the fluid entering through the second inlet 2 flows to the outlet 3.

For example, the direction in which the fluid enters through the first inlet 1 and the direction in which the fluid enters through the second inlet 2 may be different directions. For example, the direction in which the fluid flows to the outlet 3 may be perpendicular to the direction in which the fluid enters through the first inlet 1 and the direction in which the fluid enters through the second inlet 2.

Here, the fluid entering through the first inlet 1 may flow to the outlet 3 via the stem 120 and the controller 130. Here, the fluid introduced through the second inlet 2 may flow to the outlet 3 via the stem 120 and the control unit 130. That is, regardless of the inflow direction of the fluid, the fluid flowing through the valve body 110 may flow to the outlet 3 via the stem 120 and the control unit 130. Therefore, the flow of the fluid respectively entering through the plurality of inlets can be collectively adjusted according to the rotation of the stem 120, it can be collectively affected by the controller 130.

On the other hand, the inlet of the valve body 110 is not limited to two. For example, two inlets may be added to the valve body 110 in a direction perpendicular to the direction connecting the first inlet 1 and the second inlet 2 and the direction of the outlet 3. Here, three control units 130 are installed so that the fluid flowing through each inlet can flow independently.

The stem 120 may be inserted into the valve body 110 to adjust the flow of fluid passing through the valve body 110 according to the rotation angle.

For example, when the rotation angle of the stem 120 is the same as the rotation angle of the stem 120 shown in FIG. 1, the fluid entering through the first inlet 1 and the fluid entering through the second inlet 2 are All can flow to exit 3. Here, when the stem 120 is rotated 90 degrees clockwise with respect to the upper surface, the fluid flowing through the first inlet (1) may flow to the outlet (3), entering through the second inlet (2) The fluid can be shut off.

The controller 130 may be attached to the stem 120 to control the flow of the fluid between the first inlet 1 and the second inlet 2. For example, the controller 130 may be a septum that regulates the flow of fluid between the first inlet 1 and the second inlet 2.

If the control unit 130 is not included in the valve device 100, the fluid flowing through the first inlet 1 may restrict the flow by applying a force to the fluid flowing through the second inlet 2. .

As the controller 130 is included in the valve device 100, the controller 130 may receive the force of the fluid entering through the first inlet 1 instead of the fluid entering through the second inlet 2. Similarly, the controller 130 may receive the force of the fluid entering through the second inlet 2 instead of the fluid entering through the first inlet 1. Accordingly, the distortion in the flow of the fluid flowing through the first inlet 1 and the flow of the fluid entering through the second inlet 2 can be reduced. Accordingly, the control of the flow of the fluid according to the rotation angle of the stem 120 can be more precise.

FIG. 2 is a diagram illustrating an embodiment of the stem shown in FIG. 1.

Referring to FIG. 2, the stem 120 may be in the form of a rod. Assuming that the longitudinal direction of the stem 120 is the z direction of the cylindrical coordinate system, the stem 120 may rotate in the phi direction.

In addition, one end of the stem 120 may have a cylindrical shape. Here, a part of one end of the stem 120 may be an open structure. Fluid can flow through the open space.

Referring to FIG. 3, (a) shows a transverse section of the portion inserted into the valve body in the stem, (b) shows a bird's eye view of the portion inserted into the valve body in the stem, and (c) shows ( The cross section cut | disconnected in the c direction in a) is shown, (d) shows the cross section cut | disconnected in the d direction in (a).

Referring to FIG. 3A, the stem 120 may include a semi-cylindrical outer wall 121 formed at one end of the stem 120 to block the flow of fluid. In addition, a semi-cylindrical region 122 forming a cylinder together with the outer wall 121 may be defined.

Here, the fluid flowing through the inlet located on the x-axis or y-axis may be blocked by the outer wall 121. In addition, the fluid entering through the inlet may flow to the outlet located in the opposite direction of the z axis via the interior of the portion inserted into the valve body in the stem.

On the other hand, the control unit may be disposed in the inner space of the stem formed by the outer wall 121. This will be described later with reference to FIGS. 5 to 17.

Figure 4 is a view showing the flow of fluid in the valve device does not include a control unit.

Referring to FIG. 4, the flow of fluid is represented by a number of arrows. Here, the fluid flowing through the left inlet may be blocked by the fluid flowing through the right inlet. Accordingly, fluid flowing through the left inlet can flow through the relatively narrow passage to the bottom outlet, and fluid flowing through the right inlet can flow through the relatively wide passage to the bottom outlet.

By including the control unit in the valve device, the occurrence of the above-described phenomenon can be reduced. Accordingly, the influence of each other between the fluids flowing through the inlet is reduced, so that the flow of the fluid can be precisely controlled.

5 to 8, (a) shows a transverse section of the portion inserted into the valve body in the stem, (b) shows a bird's eye view of the portion inserted into the valve body in the stem, and (c ) Shows a cross section cut in the x direction in (a), and (d) shows a cross section cut in the y direction in (a).

Referring to FIG. 5, the controller 130 may have a planar shape extending from the center of the outer wall 121 to the center of the semi-cylindrical region 122 forming a cylinder together with the outer wall 121.

Referring to FIG. 6, the thickness of the controller 130 may become thicker in the direction opposite to the outlet direction of the fluid (z direction). For example, a portion where the edge of the control unit 130 and the stem 120 are in contact with each other may have a round shape. Accordingly, the fluid introduced through the inlet can rotate smoothly, the flow of the fluid can be smooth.

Referring to FIG. 7, the controller 130 may have a planar shape extending from the center of the semi-cylindrical region 122 that forms a cylinder together with the outer wall 121 toward the outer wall 121 and separated from the outer wall. For example, the width of the surface of the controller 130 may be 0.15 times or more and 0.75 times less than the width of the surface of the controller shown in FIG. 5.

That is, the controller 130 may not completely isolate the fluids respectively introduced through the plurality of inlets. Accordingly, the controller 130 may increase the flow rate of the fluid while reducing the distortion of the flow of the fluid by receiving the force of the flow of the fluid.

For example, if the flow rate of the fluid flowing through the first inlet is high and the flow rate of the fluid flowing through the second inlet is small, the fluid flowing through the first inlet may not flow the fluid flowing through the second inlet. It can flow to the exit smoothly with little restriction. Accordingly, the valve device 100 can flow a large amount of fluid while precisely controlling the flow rate.

Referring to FIG. 8, the thickness of the controller 130, which is similar in size to the controller 130 of FIG. 7, may become thicker in the direction opposite to the outlet direction of the fluid (z direction). For example, a portion where the edge of the control unit 130 and the stem 120 are in contact with each other may have a round shape. Accordingly, the fluid entering through the inlet can rotate smoothly, the flow of the fluid can be more smooth.

9, 11 and 13, (a) shows a stem, (b) shows a control section, and (c) shows a pin.

10, 12 and 14, (a) shows a transverse section of the portion inserted into the valve body in the stem, and (b) shows a bird's eye view of the portion inserted into the valve body in the stem. (c) shows the cross section cut | disconnected in the x direction in (a), (d) shows the cross section cut | disconnected in the y direction in (a).

9 and 10, the valve device according to an embodiment of the present invention includes a fastener 126, so that the stem 120 and the controller 130 may be assembled with each other.

For example, the controller 130 may have a wide planar shape with the upper portion relative to the z direction, and may have a 'TT' shape when viewed in the x direction. In this case, the controller 130 may be inserted from the bottom of the stem 120 to be assembled through the fastener 126 and the bolt 127.

11 and 12, a valve device according to an embodiment of the present invention may include a groove 128.

For example, the controller 130 may have a date when viewed in the x direction. Here, the controller 130 may be assembled by being inserted to fit into the groove 128 from the bottom of the stem 120.

13 and 14, a valve device according to an embodiment of the present invention may include a pin 129.

For example, the controller 130 may have a date when viewed in the x direction. In this case, the controller 130 may be inserted from the bottom of the stem 120 to be assembled using the pin 129 as a medium.

On the other hand, one end of the control unit 130 may be fixed to the outer wall 121, the other end of the control unit 130 may be fluid relative to the outer wall. Here, the control unit 130 may move in accordance with the flow of the fluid respectively entering through a plurality of inlets. For example, when the flow rate of the fluid entering through the first inlet is less than the flow rate of the fluid entering through the second inlet, the other end of the controller 130 may move toward the first inlet. Accordingly, the fluid introduced through the first inlet can flow smoothly to the outlet.

That is, when the other end of the control unit 130 is fluid relative to the outer wall, the valve device 100 can flow a large amount of fluid while precisely controlling the flow rate.

Referring to FIG. 15, one end of the stem 220 may be spherical. That is, one end of the stem is not limited to the cylindrical shape as shown in FIG. In addition, similar to the assembly shown in FIGS. 9 to 14, the spherical stem may be assembled with the partition wall.

16 and 17 illustrate the stem and the controller shown in FIG. 15.

Referring to FIG. 16, (a) shows a transverse section of the portion inserted into the valve body in the stem, (b) shows a bird's eye view of the portion inserted into the valve body in the stem, and (c) shows ( The cross section cut | disconnected in the x direction in a) is shown, (d) shows the cross section cut | disconnected in the y direction in (a).

Here, the stem 220 may include a hemispherical outer wall 221 formed at one end of the stem 220 to block the flow of the fluid. The controller 230 may be disposed in an inner space of the stem 220 formed by the outer wall 221.

Referring to FIG. 17, (a) shows a transverse section of the portion inserted into the valve body in the stem, (b) shows a bird's eye view of the portion inserted into the valve body in the stem, and (c) shows ( The cross section cut | disconnected in the x direction in a) is shown, (d) shows the cross section cut | disconnected in the y direction in (a).

Here, the control unit 230 may have a planar shape that is extended from the center of the hemispherical region 222 forming a cylinder with the outer wall 221 toward the outer wall 221 and separated from the outer wall 221. For example, the width of the surface of the controller 230 may be 0.15 times or more and 0.75 times less than the width of the surface of the controller illustrated in FIG. 16.

On the other hand, Fig. 18 is a diagram showing the relationship between the opening ratio and the flow rate coefficient of the valve with or without the partition, where (a) shows no partition and (b) shows the partition.

Reference numerals

401 and 403 denote flow rates of the fluid flowing through the first inlet (A-Port, see reference numeral 1 in FIG. 1) according to the opening ratio of the valve, and

reference numerals

402 and 404 according to the opening ratio of the valve. The flow rate of the fluid introduced through the second inlet B-Port (see FIG. 1) is shown. Here, the opening degree of the valve means the rotation angle of the stem.

As shown in (a) of FIG. 18, when there is no partition, the flow rate of the fluid flowing through the first inlet or the second inlet has a hysteresis curve. This means that the relationship between the rotation angle of the valve and the flow rate of the fluid actually flowing through the valve is different from the expected relationship, which makes it difficult to precisely control the flow of the fluid. On the other hand, as shown in (b) of FIG. 18, when there is a partition, the flow rate of the fluid moves along the same curve according to the opening ratio of the valve, so that the flow rate of the fluid is precisely controlled as compared with FIG. It can be seen that.

On the other hand, Figure 19 is a view showing the flow coefficient according to the partition length, reference numeral 405 is a flow rate of the fluid flowing through the first inlet (A-Port, reference numeral 1 in Fig. 1) according to the opening degree of the valve. , 406 shows the flow rate of the fluid entering through the second inlet (B-Port, reference numeral 2 of FIG. 1) according to the opening degree of the valve. Here, the opening degree of the valve means the rotation angle of the stem.

And, Figure 20 is a view showing the flow flow along the partition length, (a) is the flow of fluid flowing through the first inlet 1 and the second inlet 2 when there is no partition, (b ) Represents the flow of fluid flowing through the first inlet 1 and the second inlet 2 when the barrier rib is 30% in length (see the 30% curve in FIG. 19), and 50% (see the 50% curve in FIG. 19), the flow of fluid flowing through the first inlet 1 and the second inlet 2, (d) is the case where the length of the partition is 100% (Fig. FIG. 19 illustrates a flow flow of fluid flowing through the first inlet 1 and the second inlet 2. Here,% represents the length of the partition wall to the diameter of the inner space of the stem formed by the outer wall.

As shown in FIG. 20A, when the partition wall 130 is absent, the fluid flowing through one of the first inlet 1 and the second inlet 2 is introduced through the other inlet. It can limit the flow of fluid.

On the other hand, if there is a partition 130, as shown in Figs. 19 and 20 (b) to (d), the force of the fluid through the first inlet 1 and the second inlet (2) Since the partition 130 receives the influence of each other between the incoming fluids, the distortion of the fluid can be reduced. Accordingly, the flow control of the fluid according to the rotation angle of the stem 120 can be more precise. In particular, as shown in Figure 19, it can be seen that the length of the partition wall that can control the flow rate to the maximum according to the opening degree of the valve is 30%. It should be noted that the specific numerical values described above are merely for help of the present invention and may be changed according to factors such as the characteristics of the valve.

The present invention has been described above by way of example, but the present invention is not limited to the above-described embodiment, and those skilled in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Anyone can make a variety of variations.

Claims

A valve body (110) providing a passage through which the fluid entering through the first inlet (1) flows to the outlet (3) and a passage through which the fluid entering through the second inlet (2) flows to the outlet (3);

A stem 120 inserted into the valve body to adjust a flow of fluid passing through the valve body according to a rotation angle; And

A controller 130 attached to the stem to control a flow of fluid between the first inlet and the second inlet; Valve device comprising a.
The method of claim 1,

The direction of fluid entering through the first inlet and the direction of fluid entering through the second inlet is a different direction,

And a direction in which fluid flows to the outlet is perpendicular to a direction in which fluid enters through the first inlet and a direction in which fluid enters through the second inlet.
The method of claim 1,

The stem includes a semi-cylindrical outer wall 121 formed at one end of the stem to block the flow of fluid,

And the control unit includes a septum disposed in an inner space of the stem formed by the outer wall.
The method of claim 1,

The stem includes a hemispherical outer wall formed at one end of the stem to block flow of fluid;

And the control unit includes a septum disposed in an inner space of the stem formed by the outer wall.
The method according to any one of claims 2 to 4,

Based on the semi-cylindrical cross section of the outer wall, the partition wall has a planar form extending from the center of the outer wall to the center of the semi-cylindrical region 122 forming a cylinder with the outer wall.
The method of claim 5,

The thickness of the partition wall valve device becomes thicker in the direction opposite to the outlet direction.
The method according to any one of claims 2 to 4,

Based on the semi-cylindrical cross section of the outer wall, the partition wall is a planar form extending from the center of the semi-cylindrical region 122 forming a cylinder with the outer wall toward the outer wall and separated from the outer wall.
The method of claim 7, wherein

Based on the semi-cylindrical cross section of the outer wall, the length of the partition wall is 0.3 to 1.5 of the cylinder radius of the valve device.
The method of claim 8,

The thickness of the partition wall valve device becomes thicker in the direction opposite to the outlet direction.
A valve body providing a passage through which the fluid entering through the first inlet flows to the outlet and a passage through which the fluid entering through the second inlet flows to the outlet;

A stem inserted into the valve body to adjust a flow of fluid passing through the valve body according to a rotation angle; And

A control part inserted into the stem to control a flow of fluid between the first inlet and the second inlet; Valve device comprising a.
The method of claim 10,

The stem includes an outer wall formed at one end of the stem to block flow of the fluid,

The control unit,

A septum inserted into an inner space of the stem formed by the outer wall; And

A fastener formed on the partition wall; Including,

And the outer wall and the partition wall are assembled through the fastener.
The method of claim 10, wherein the stem,

An outer wall formed at one end of the stem to block flow of the fluid; And

Grooves formed in the outer wall; Including,

The control unit includes a septum inserted into an inner space of the stem formed by the outer wall,

And the outer wall and the partition wall are assembled through the groove.
The method of claim 10,

Further comprising a pin connecting the stem and the control unit,

The stem includes an outer wall formed at one end of the stem to block flow of the fluid,

The control part includes a septum inserted into the inner space of the stem formed by the outer wall and perforated;

And the pin is driven through a hole drilled in the partition wall.
The method of claim 13,

One end of the partition is fixed to the outer wall,

The other end of the partition wall is a fluid valve device relative to the outer wall.
The method according to any one of claims 11 to 13,

Based on the semi-cylindrical cross section of the outer wall, the partition wall has a planar shape extending from the center of the semi-cylindrical region 122 forming a cylinder with the outer wall toward the outer wall and separated from the outer wall,

Based on the semi-cylindrical cross section of the outer wall, the length of the partition wall is 0.5 to 1.5 of the cylinder radius,

The thickness of the partition wall valve device becomes thicker in the direction opposite to the outlet direction.