KR20240065661A - Double block and bleed valve - Google Patents

Abstract

The cryogenic double valve according to the present invention is a cryogenic double valve that opens and closes a passage through which fluid moves. It is located forward in the direction in which the fluid moves and rotates to limit the movement of the fluid, but adjusts the amount of fluid movement according to the angle of rotation. A cryogenic double valve is provided that includes a limiting module that limits the fluid and a valve module that is positioned relatively rearward of the limiting module in the direction in which the fluid moves and rotates to limit the movement of the fluid.

Description

Cryogenic double valve{DOUBLE BLOCK AND BLEED VALVE}

The present invention relates to a cryogenic double valve, and more specifically, to a flow control double ball valve for controlling the flow rate of cryogenic fluid and a butterfly valve for limiting the movement of the fluid, formed as a single unit and installed on one pipe. This is about a cryogenic double valve that can solve problems caused by changes in flow rate and the distance and volume between valves by positioning them, while reducing the space occupancy ratio and the welding process such as valves to valves and pipes to valves.

In general, in order to move fluid from one location to another and use it, it must pass through a number of pipes, and in the process, a number of valves may be arranged for reasons such as control of flow rate and flow rate.

In particular, in order to control the flow rate and flow rate, it is most desirable to change the diameter of the moving passage on the pipe, but it is generally not easy to control this, and even if it is used by using a ball valve with openings of different diameters, It may be difficult to maintain the flow rate of the fluid when moving to a pipe with a wider diameter while the flow rate is relatively small.

In addition, in order to limit the flow rate or block the movement of fluid, a valve to limit the flow rate and a valve to block the movement of fluid must be separately provided. When different valves are provided, the valve must be There could be a disadvantage in that the method for solving the decrease in flow rate becomes ambiguous when the flow rate is limited depending on the distance between the constituent bodies.

However, in order to solve this problem, there was an attempt to solve this problem by providing a valve that can maintain the flow rate between the valve that controls the flow rate and the valve that blocks the movement of fluid. There may have been some difficulty in overcoming this problem by making the distance between them further and providing the additional problem that the valve unit could become somewhat complicated.

In addition, considering that this is not the only problem, there are various installation problems such as welding to connect multiple valves, space occupancy ratio, and space volume, as well as the problem of having to prepare two ball valves to control the existing flow rate. , In this situation, there could be a disadvantage that the production process becomes difficult and complicated, such as the weight of the welded pipe, welding between pipes, welding between pipes and valves, and valves.

Therefore, various methods are being devised to control the flow rate and flow rate, block fluid movement while maintaining the flow rate and flow rate, and solve the problems of unit valves that become complex with multiple valves. We need means.

The present invention is an invention made to solve the problems of the prior art described above, and consists of a flow control double ball valve for controlling the flow rate of cryogenic fluid and a butterfly valve for limiting the movement of the fluid as one unit. By placing it on the pipe, the problem is to solve the problems caused by changes in flow rate and the distance and volume between valves, while reducing the space occupancy ratio and the welding process such as valves to valves and pipes to valves.

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

The cryogenic double valve for achieving the above-mentioned purpose is a cryogenic double valve that opens and closes the passage through which the fluid moves. It is located forward in the direction in which the fluid moves and rotates to limit the movement of the fluid, but depending on the angle of rotation, the cryogenic double valve It includes a limit module that limits the amount of movement and a valve module that is located relatively behind the limit module in the direction in which the fluid moves and rotates to limit the movement of the fluid.

Here, the limiting module is characterized by including an opening that is open in one direction, with a space formed therein, and formed to have a relatively narrower diameter than the passage through which fluid moves.

In addition, the limiting module includes a body unit and a body unit having a space formed therein so that fluid moves through the inner space, and at least one opening through which fluid can move through the inner space is formed on a portion of the circumference. It is characterized in that it includes a rotation unit provided on the outside of the unit, coupled to the body unit to rotate individually, and restricting the movement of fluid according to the direction of rotation.

In addition, the body unit has a first opening that is open in a first direction perpendicular to the rotation axis of the rotation unit to allow fluid to move through the internal space, and is open in a second direction perpendicular to the rotation axis of the rotation unit, It is formed to open in a different direction from the first opening, and includes a second opening formed to have a relatively narrower diameter than the first opening.

At this time, the rotation unit is formed with an opening and closing part that opens in one direction and has the same diameter as the first opening, and moves the passage by closing the first opening or the second opening according to the rotation direction. It is characterized by limiting the amount of movement of the fluid.

Additionally, the opening portion is characterized in that it is formed in a polygonal shape.

On the other hand, the valve module is characterized in that it includes a closing unit formed in a size corresponding to the diameter of the passage through which the fluid moves and closing the passage according to the rotation direction, and an axis unit forming a rotation axis around which the closing unit rotates. do.

In addition, the limiting module and the valve module are formed as a single unit and are located on one pipe.

Meanwhile, the limiting module is characterized in that a pair is provided.

Here, the limiting module is characterized in that a pair of the limiting modules are positioned with the valve module in between.

The cryogenic double valve of the present invention for solving the above problems is formed by forming a flow control double ball valve for controlling the flow rate of cryogenic fluid and a butterfly valve for limiting the movement of the fluid into one unit, so that it can be installed on one pipe. By locating it, it can have the effect of solving problems caused by changes in flow rate and the distance and volume between valves, while also reducing the space occupancy ratio and the welding process such as valve-to-valve and pipe-to-valve.

The effects of the present invention 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 description of the claims.

The summary set forth above as well as the detailed description of the preferred embodiments of the present application set forth below may be better understood when read in conjunction with the accompanying drawings.
Preferred embodiments are shown in the drawings for the purpose of illustrating the invention.
However, it should be understood that the present application is not limited to the exact arrangement and means shown.
1 is a diagram for general explanation of a cryogenic double valve according to an embodiment of the present invention;
Figure 2 is a diagram illustrating a limiting module of a cryogenic double valve according to an embodiment of the present invention;
Figure 3 is a diagram illustrating a valve module of a cryogenic double valve according to an embodiment of the present invention;
Figure 4 is a diagram illustrating a situation in which the limit module of the cryogenic double valve is rotated according to an embodiment of the present invention;
Figure 5 is a diagram illustrating that the body unit of the cryogenic double valve is individually rotated inside the rotation unit according to an embodiment of the present invention; and
Figure 6 is a diagram illustrating the first opening and the second opening of the cryogenic double valve according to a modified example of the present invention.

Hereinafter, preferred embodiments of the present invention, in which the object of the present invention can be realized in detail, will be described with reference to the attached drawings.

In describing this embodiment, the same names and the same symbols are used for the same components, and additional description accordingly will be omitted.

First, the overall situation of the present invention can be described with reference to FIG. 1.

Specifically, FIG. 1 is a diagram illustrating a general explanation of a cryogenic double valve according to an embodiment of the present invention.

First, as shown in Figure 1, the cryogenic double valve of the present invention provides a passage (W) through which cryogenic fluid moves, and is forward in the direction in which the fluid moves so as to limit the movement of the fluid while controlling the flow rate and flow rate. A limit module 100 is located and rotates to limit the movement of the fluid, but limits the amount of fluid movement according to the rotation angle, and is located relatively behind the limit module 100 in the direction in which the fluid moves, and rotates. It may include a valve module 200 that limits the movement of fluid.

Here, one unit configuration (D) can be formed based on the limiting module 100 and the valve module 200 on a single pipe (P), which, unlike using multiple valves, There may be features that can effectively reduce the gap between the liver and its weight.

In particular, in the case of the pipe (P) that moves cryogenic fluid or the valve provided in the pipe (P), since it moves cryogenic fluid, including LNG, the flow rate of the fluid is adjusted in this way or the space occupied by the pipe (P) is adjusted. Since specific gravity, welding and leakage prevention between pipes (P), pipes (P), valves and pipes (P), and valves are particularly important, reducing the inter-face distance between valves can be considered a more important issue. there is.

Here, the limit module 100 and the valve module 200 are provided on the passage (W) through which fluid moves on the pipe (P), and the limit module 100 controls the amount of fluid movement according to the rotation angle. In addition, the valve module 200 may restrict the movement of fluid.

Accordingly, the limiting module 100 may include an opening 120 that is open in one direction, with a space formed therein, and formed to have a relatively narrower diameter than the passage W through which fluid moves therein. In addition, the opening 120 may have the same diameter on one side and the other side.

However, although it was previously mentioned that the opening 120 formed in the limiting module 100 is formed to have a relatively narrower diameter than the passage W, it may also have a shape having the same diameter as the passage W. This may simply mean a state in which the diameter is the same, including that the diameter is formed to be narrower than the diameter of the passage (W), but may not necessarily be limited thereto.

Meanwhile, the valve module 200 may be located relatively rearward than the limiting module 100 to limit the movement of fluid passing through the limiting module 100, which may be performed by a plurality of the above according to the prior art. Compared to situations where the flow rate and movement of fluid had to be restricted by placing the restriction module 100, the inter-face distance is reduced and the weight of the unit component D consisting of the restriction module 100 and the valve module 200 is reduced. There may also be an effect of effectively lowering .

In addition, as will be described in more detail in the drawings described later, a first valve (V1) that rotates the body unit 140 of the limit module 100 and a first valve (V1) that rotates the rotation unit 160 of the limit module 100 It may include two valves (V2) and a third valve (V3) that blocks flow movement by rotating the closing unit 220 of the valve module 200.

In order to explain the above-described configuration in more detail, it can be described with reference to FIGS. 2 and 3.

Specifically, FIG. 2 is a diagram illustrating a limiting module of a cryogenic double valve according to an embodiment of the present invention, and FIG. 3 is a diagram illustrating a valve module of a cryogenic double valve according to an embodiment of the present invention. It is a drawing.

First, as shown in FIG. 2, the limiting module 100 according to an embodiment of the present invention has a space formed inside so that fluid moves through the inner space, and fluid moves through the inner space on a part of the circumference. A body unit 140 in which at least one opening 120 is formed, and a body unit 140 provided on the outside of the body unit 140 to surround the body unit 140, the body unit 140 It is coupled to rotate individually and may include a rotation unit 160 that limits the movement of fluid according to the direction of rotation.

Here, in the case where the opening 120 is formed as a single unit in the body unit 140, so that only one movement passage (W) in the internal space is formed, that is, there is only one passage (W) penetrating the body unit 140. When formed, the movement passage (W) of the fluid may be closed by the rotation unit 160 as the body unit 140 rotates, thereby blocking the movement of the fluid, and the movement of the fluid may be blocked. The flow rate and flow rate of the fluid can vary depending on the diameter of the opening 120.

At this time, the opening 120 does not simply mean an entrance to an open part, but rather forms a space that penetrates the body unit 140 and forms a single movement passage (W), as described above. This may mean that the body unit 140 may be formed to have at least one or more openings 120 depending on the situation, and this will be explained in more detail through the drawings described later.

Meanwhile, the valve module 200 may be formed to block the movement of fluid that has passed through the limiting module 100 or to not restrict movement according to the direction of rotation, and as shown in FIG. 3, the fluid moves. A closing unit 220 formed to a size corresponding to the diameter of the passage W and closing the passage W according to the direction of rotation, and an axis unit 240 forming a rotation axis around which the closing unit 220 rotates. It can be included.

Here, the closing unit 220 may be formed in a size corresponding to the diameter of the passage W, as described above, and may be provided with a gasket along the circumference, and may be provided with a gasket along the circumference of the passage W according to the direction of rotation. ) is provided to close the fluid to selectively block the movement of fluid.

In addition, the shaft unit 240 may form a rotation axis around which the closing unit 220 rotates, and if necessary, the shaft unit 240 is provided to be eccentric without passing through the center of the closing unit 220. The closing unit 220 may have an eccentric rotation axis as it rotates.

This may be provided in this way to prepare for the problem of the closing unit 220 failing to properly close the passage (W) as it is worn out by continuously contacting the inner surface of the passage (W), but is not necessarily limited to this. no.

To summarize and express the above-mentioned information, the limiting module 100 and the valve module 200 can form the unit configuration (D) provided on one of the pipes (P), and the unit configuration ( D) has the effect of effectively reducing the weight of the pipe (P), the face-to-face distance between the limit module (100) and the valve module (200), and the proportion of space occupied by the overall pipe (P). You can.

Based on the above-described details, reference may be made to FIGS. 4 to 6 to explain useful examples and configurations of the present invention.

Specifically, Figure 4 is a diagram illustrating a situation in which the limiting module of the cryogenic double valve is rotated according to an embodiment of the present invention, and Figure 5 is a diagram showing the body unit of the cryogenic double valve according to an embodiment of the present invention. Figures 6 and 6 are diagrams illustrating individual rotation within the rotation unit and are diagrams illustrating the first and second openings of a cryogenic double valve according to a modified example of the present invention.

First, as shown in FIG. 4, the body unit 140 and the rotation unit 160 may be formed with an opening 120 and an opening and closing portion 162 through which fluid moves, respectively, and the body unit 140 Depending on the rotation, the opening/closing part 162 may restrict the movement of fluid by closing the opening part 120.

First, the body unit 140 and the rotation unit 160 form the same rotation axis, but are provided to rotate individually, and as shown in FIG. 5, the opening and closing portion 162 and the opening portion 120 are rotated. The flow rate can be adjusted by moving in a direction where the centers are offset from each other and the movement of the flow rate is blocked or the movement of the flow rate is partially restricted.

However, by rotating the body unit 140 in this way, the opening 120 is closed by the rotation unit 160 to block the movement of fluid, and as shown in FIG. 6, the opening 120 ) is divided into a first opening 122 and a second opening 124 formed to have a relatively narrower diameter than the first opening 122, the first opening 124 is formed to have a relatively narrower diameter than the first opening 122. The body unit 140 may be rotated in a state where the part 122 and the opening/closing part 162 are placed in contact with each other so that the second opening part 124 is located at the opening/closing part 162.

In this arrangement, the flow rate can be set to be smaller or have a faster flow rate than that moving through the first opening 122, and the flow rate and flow rate can be adjusted through this configuration.

This may have the effect of reducing the distance between the surfaces of the limiting module 100 and the valve module 200 to induce movement of fluid while maintaining the flow rate.

In addition, if a pair of limit modules 100 are provided, they may be provided with the valve module 200 in between to re-adjust the flow rate and flow rate of the fluid passing through the valve module 200. It may not be limited to this.

In addition, if necessary, the first opening 122 and the second opening 124, that is, the opening 120, may be formed in a polygonal shape, and the flow rate due to the difference in shape may be formed. And the flow rate may be adjustable.

In other words, it can be designed to vary widely as needed, and this may vary depending on the type of fluid and application situation.

We have looked at preferred embodiments of the invention, and it is obvious to those skilled in the art that, in addition to the embodiments described above, the present invention can be embodied in other specific forms without departing from its spirit or scope. will be.

Therefore, the above-described embodiments are to be regarded as illustrative and not restrictive, and thus the present invention is not limited to the above description but may be modified within the scope of the appended claims and their equivalents.

D: Unit composition
P: pipe
V1: first valve
V2: Second valve
V3: Third valve
W: aisle
100: Limit module
120: opening
122: first opening
124: second opening
140: Body unit
160: rotation unit
162: opening and closing part
200: Valve module
220: Closed unit
240: Axis unit

Claims (10)

A cryogenic double valve that opens and closes the passage through which cryogenic fluid moves,
A limiting module that is located at the front in the direction in which the fluid moves and rotates to limit the movement of the fluid, but limits the amount of fluid movement according to the rotation angle; and
A valve module that is located relatively behind the limiting module in the direction in which the fluid moves and rotates to limit the movement of the fluid,
Cryogenic double valve.
According to paragraph 1,
The limiting module is,
Characterized in that it includes an opening that is open in one direction, where a space is formed inside and the diameter is relatively narrower than the passage through which fluid moves.
Cryogenic double valve.
According to paragraph 2,
The limiting module is,
A body unit with a space formed inside so that fluid moves through the inner space, and at least one opening through which fluid can move through the inner space is formed on a portion of the circumference; and
Characterized in that it includes a rotation unit provided on the outside of the body unit, coupled to the body unit to rotate individually, and restricting the movement of fluid according to the direction of rotation.
Cryogenic double valve.
According to paragraph 3,
The body unit is,
a first opening that opens in a first direction perpendicular to the rotation axis of the rotation unit to allow fluid to move through the internal space; and
A second opening that is open in a second direction perpendicular to the rotation axis of the rotation unit, is formed to open in a different direction from the first opening, and is formed to have a relatively narrower diameter than the first opening. Characterized by,
Cryogenic double valve.
According to paragraph 4,
The rotation unit is,
An opening and closing part that opens in one direction is formed to have the same diameter as the first opening, and the first opening or the second opening is closed according to the direction of rotation to limit the amount of fluid moving through the passage. Characterized by,
Cryogenic double valve.
According to paragraph 2,
The opening part is
Characterized by being formed in a polygonal shape,
Cryogenic double valve.
According to paragraph 4,
The valve module is,
A closing unit formed in a size corresponding to the diameter of the passage through which the fluid moves and closing the passage according to the direction of rotation; and
Characterized in that it includes an axis unit forming a rotation axis around which the closing unit rotates.
Cryogenic double valve.
According to paragraph 1,
Characterized in that the limiting module and the valve module are formed as a single unit and located on one pipe,
Cryogenic double valve.
According to paragraph 1,
The limiting module is,
Characterized in that a pair is provided,
Cryogenic double valve.
According to clause 9,
The limiting module is,
Characterized in that the pair of limit modules are each positioned with the valve module between them.
Cryogenic double valve.

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