KR20200127739A - Fluid flow control device - Google Patents

Abstract

Provided is a flow rate control device which controls a flow rate of fluid flowing inside a duct and automatically blocks the inside of the duct to prevent explosion pressure from being transferred to a rear end part of the duct and protect a worker and equipment when the explosion pressure occurs at a front end part of the duct. The flow rate control device, which is installed inside the duct to control the flow rate of the fluid flowing inside the duct, comprises: a fixed plate fixated to the inside of the duct and radially formed around a first through-hole at the center thereof to have at least one first fluid flow hole which is a passage where the fluid flows; a rotary plate having a second through-hole overlapped with the first through-hole at the center and having at least one second fluid flow hole which is overlapped with the fixed plate to be rotatable around the second through-hole and is connected to the first fluid flow hole; a shaft penetrating the first through-hole and the second through-hole to be slid in a longitudinal direction, extended to the outside of the fixed plate and the rotary plate, and coming in contact with the rotary plate in an inclined plane in the sliding direction; and a pressure receiving plate fixated to the shaft extended in the fluid introduction direction to receive the explosion pressure transferred with the fluid.

Description

Flow control device {Fluid flow control device}

The present invention relates to a flow control device, and more particularly, controls the flow rate flowing through the duct, and automatically shuts off the inside when an explosion pressure occurs at the front end of the duct so that the explosion pressure moves to the rear end of the duct. It relates to a flow control device that can prevent the operation and protect workers and equipment.

In general, ducts for air flow are installed and used in industrial sites, daily life, and interiors of ships for ventilation or cooling and heating. Ducts are passages and structures for flowing gaseous fluids such as air, and are installed and used in structures such as buildings and ships, and dampers are installed at arbitrary positions.

The damper adjusts the direction and speed of circulating air by changing the cross-sectional area of the duct, divides the inside of the duct to open and close only when necessary, or adjusts the amount of opening and closing to control the flow rate of fluid flowing inside. It is used to selectively perform cooling and heating, or to block flames from moving to other places through a duct when a fire occurs in a ship. In particular, a damper is installed and used to prevent an explosion from occurring inside the duct and the explosion pressure from being transmitted to other places. Such a damper can prevent a problem that damages various equipment due to the explosion pressure or causes the safety of a worker, but it requires a space for installing a safety device, and there is a problem such as a cost of construction.

Republic of Korea Patent Publication No. 10-2004-0037922, (2004.05.08.)

The technical problem to be achieved by the present invention is to solve this problem, by controlling the flow rate flowing through the inside of the pipe, and automatically shutting off the inside when the explosion pressure occurs at the front end of the duct, so that the explosion pressure goes to the rear end of the duct It is intended to provide a flow control device that can prevent movement and protect workers and equipment.

The technical problem of the present invention is not limited to the above-mentioned problems, and another technical problem that is not mentioned will be clearly understood by those skilled in the art from the following description.

The flow control device according to the technical problem of the present invention is a flow control device that is installed inside a duct to control the flow rate of a fluid flowing therein, which is fixed inside the duct and radially centered on a central first through hole. The fixing plate is formed and has at least one first fluid transfer port formed as a passage through which the fluid moves, and a second through hole overlapping with the first through hole is formed in the center, and the fixing plate is rotatable around the second through hole A rotating plate overlapping with and having at least one second fluid moving port in communication with the first fluid moving port, and sliding in a longitudinal direction through the first through hole and the second through hole, and extending to the outside of the fixed plate and the rotating plate And a shaft in contact with the rotating plate in an inclined plane with respect to the sliding movement direction, and a pressure receiving plate fixed to the shaft extending in a direction in which the fluid is introduced to receive an explosion pressure input with the fluid.

The rotating plate may include a guide tube having a helical groove through which the shaft passes and a protrusion protruding toward the outer circumferential surface of the shaft is inserted.

The rotating plate is opened before the pressure is input to the pressure receiving plate so that the second fluid transfer port overlaps with the first fluid transfer port, and when pressure is input to the pressure receiving plate, it rotates to close the first fluid transfer port. I can.

It may further include a shaft restoring unit installed at the end of the shaft extending in the direction in which the fluid is discharged, and transmitting a restoring force when the shaft slides.

The shaft restoration unit may include a tube in which the shaft is movably inserted into one end portion and is sealed inside, and a restoring force of the shaft may be generated by the pressure inside the tube.

The tube may further include an adjustment screw for adjusting the volume of the tube at the other end.

The flow control device according to the present invention can control the flow rate of the fluid flowing inside the duct, and prevent the explosion pressure from being transmitted to other places due to the explosion occurring at the inlet. In particular, the flow control device can prevent the safety of workers or damage to various equipment by blocking the rear end of the duct when the explosion pressure occurs inside the duct. In addition, after the explosion pressure is generated, the flow path can be automatically opened and closed according to the occurrence of the explosion pressure by moving to the original position.

1 is a perspective view of a flow control device according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of the flow control device of Figure 1;
3 is an enlarged view of the guide tube of FIG. 2.
4 is a cross-sectional view of the flow control device of FIG. 1 taken along line AA.
5 and 6 are operational diagrams of the flow control device of FIG. 1.

Advantages and features of the present invention and methods for achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms. However, these embodiments are intended to complete the disclosure of the present invention, and those skilled in the art to which the present invention pertains. It is provided to fully inform the scope of the invention to the person, and the invention is only defined by the claims. The same reference numerals refer to the same elements throughout the specification.

In the present specification,'inlet' and'outlet' may be classified based on the flow direction of the fluid. The'inlet' means the side where the fluid flows in or a part connected to it, and the'outlet' means the side from which the fluid is discharged or the part connected to it. In addition, the'front end' and the'rear end' may be classified based on the flow direction of the fluid. The fluid flows from the'front end' to the'rear end', the'front end' is connected to the'inlet', and the'rear end' refers to a part connected to the'outlet'.

Hereinafter, a flow control device according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6.

The flow control device 1 of the present invention is a device for adjusting the flow rate of a fluid flowing therein by being installed in a passage and a structure such as the duct 100 through which the fluid flows. In particular, the flow control device 1 of the present invention blocks the transmission of the explosive pressure generated in the duct 100 to the outlet 102 along the flow direction of the fluid, thereby preventing a person or various devices from the explosive pressure. Ryu can be protected. In other words, the flow control device 1 of the present invention can prevent the movement of the explosion pressure by controlling or completely blocking the degree of opening of the flow path inside the duct 100 when the explosion pressure occurs inside the duct 100. . Such a flow control device 1 may be installed in passages and structures such as various pipes, pipes, etc. as well as the duct 100, and in the present specification, it will be described as an example installed in the duct 100.

Hereinafter, a flow rate control device according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4.

1 is a perspective view of a flow control device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the flow control device of FIG. 1, and FIG. 3 is an enlarged operation view of the guide tube of FIG. 2, and FIG. 4 Is a cross-sectional view taken along line AA of the flow control device of FIG. 1.

First, referring to FIGS. 1 and 2, the flow control device 1 according to an embodiment of the present invention includes a fixing plate 10 fixedly installed on the inner circumferential surface of the duct 100, and a duct so as to overlap with the fixing plate 10. A rotating plate 20 rotatably installed inside the 100, a shaft 30 coupled through the center of the fixed plate 10 and the rotating plate 20, and the inlet 101 fixed to the shaft 30 It includes a pressure receiving plate 40 receiving pressure introduced through.

Specifically, the flow control device 1 of the present invention is fixed inside the duct 100 and formed radially around the first through hole 11 in the center, so that at least one first fluid is a passage through which the fluid moves. The fixing plate 10 on which the copper hole 12 is formed, and a second through hole 21 overlapping with the first through hole 11 are formed in the center, and the fixing plate is rotatable about the second through hole 21 ( 10) and through the rotating plate 20 having at least one second fluid transfer port 22 in communication with the first fluid transfer port 12, the first through hole 11 and the second through hole 21 The shaft 30 slides in the longitudinal direction and extends to the outside of the fixed plate 10 and the rotary plate 20 and is in contact with the rotary plate 20 with respect to the sliding movement direction, and the shaft 30 extended in the direction in which the fluid flows. ) Is fixed to the pressure receiving plate 40 to receive the explosion pressure input with the fluid.

In the flow control device 1 of the present invention, a pressure receiving plate 40 is disposed at a position adjacent to the inlet 101 of the duct 100. The pressure receiving plate 40 is a plate that receives a fluid and an explosive pressure introduced together with the fluid, and is disposed in the interior receiving space of the duct 100 adjacent to the inlet 101. The pressure receiving plate 40 may be formed in a streamlined shape in which one side is concave to receive pressure flowing through the inlet 101, or may be formed in a flat plate shape such as a thin and flat plate. The pressure receiving plate 40 is located in a position adjacent to the inlet 101 to receive fluid and explosive pressure on one side, and when the shaft 30 is fixed to the other side and receives the explosion pressure, the shaft 30 and the Together they can slide in the longitudinal direction.

The shaft 30 is a moving shaft connected to the pressure receiving plate 40 to slide with the pressure receiving plate 40 and extending from one end fixed to the pressure receiving plate 40 and forming a piston 32 at the other end thereof. Is formed and a protrusion 31 may be formed on an outer peripheral surface adjacent to the other end. The shaft 30 has one end fixed to the pressure receiving plate 40, the other end inserted into the shaft restoration part 60 to be described later, and a fixed plate for opening and closing the inside of the duct 100 on at least a part of the outer peripheral surface (10) and the rotating plate 20 may be combined so as to overlap. In other words, the shaft 30 penetrates the first through hole 11 and the second through hole 21 so as to slide in the longitudinal direction through the central portion of the fixed plate 10 and the rotating plate 20. At this time, the shaft 30 extends to the outside of the fixed plate 10 and the rotating plate 20 and contacts the rotating plate 20 in an inclined plane with respect to the sliding movement direction, and the pressure receiving plate 40 receives the explosion pressure and the pressure receiving plate ( 40) and the shaft 30 rotates while moving in the longitudinal direction so that the fixed plate 10 and the rotating plate 20 can open and close the flow path. Hereinafter, it will be described in more detail.

The fixed plate 10 and the rotating plate 20 are flow path opening and closing plates installed inside the duct 100 to open and close the flow path of the duct 100, and are formed in a plate shape, and are centered on the shaft 30 as a central axis. As a result, a plurality of first fluid transfer ports 12 and second fluid transfer ports 22 are formed to be spaced apart from each other. The rotating plate 20 may open and close the flow path while being rotated by the shaft 30 at a predetermined angle while overlapping with or not overlapping with the first fluid transfer port 12 of the fixed plate 10.

Specifically, the fixing plate 10 is formed in a disk shape so that the first through hole 11 is formed through the center, and at least one first fluid transfer port 12 is formed through the first through hole 11 do. The first fluid transfer port 12 is a passage through which fluid flowing inside the duct 100 moves, and is formed through both ends of the disk-shaped fixing plate 10. The first fluid transfer port 12 is formed radially around the first through hole 11, and a plurality of the first fluid transfer ports 12 may be formed at a predetermined interval. The fixing plate 10 may have one first fluid transfer port 12 through, but it is not formed open with the first fluid transfer port 12 opened around the first through hole 11 as shown in the drawing. It may be formed to form a radial structure that is not formed repeatedly. The fixing plate 10 formed in this way may be installed inside the duct 100 by having an outer circumferential surface in close contact with the inner circumferential surface of the duct 100. The fixing plate 10 may be coupled to the first through hole 11 to allow the shaft 30 to slide. In addition, the rotating plate 20 may be fixed to the outer peripheral surface of the shaft 30 so as to overlap the fixing plate 10.

The rotating plate 20 is formed in a disk shape like the fixed plate 10 to form a second through hole 21 overlapping with the first through hole 11 in the center, and at least around the second through hole 21 One second fluid transfer port 22 is formed through. The second fluid transfer port 22 is a passage through which a fluid flowing inside the duct 100 flows, and is formed through both ends of the disk-shaped rotating plate 20. The second fluid transfer port 22 is radially formed around the second through hole 21, and a plurality of the second fluid transfer ports 22 may be formed at a predetermined interval. Like the fixed plate 10, the rotating plate 20 may have one second fluid transfer port 22 overlapping the first fluid transfer port 12 through which it is formed, but as shown in the drawing, the second through hole 21 ) May be formed to form a radial structure in which the second fluid transfer port 22 opened around the center and a part that is not opened are repeatedly formed. In the rotating plate 20 formed as described above, the shaft 30 may pass through the second through hole 21 and may be disposed to overlap the fixing plate 10. However, in the rotating plate 20, the shaft 30 is fixedly coupled to the second through hole 21, and is formed smaller than the inner diameter of the duct 100 of the diameter, and is formed by the shaft 30 inside the duct 100. Can be moved and rotated.

On the other hand, as described above, the shaft 30 is formed extending along the longitudinal direction from one end fixed to the pressure receiving plate 40, so that the first through hole 11 and the second through hole 21 It penetrates and extends to the outside of the fixed plate 10 and the rotating plate 20. The shaft 30 slides in the longitudinal direction of the duct 100 by the pressure received from the pressure receiving plate 40, and can rotate while sliding in contact with the rotating plate 20 in an inclined plane with respect to the sliding movement direction. In other words, the rotating plate 20 includes a guide pipe 50 forming a helical groove 51 forming an inclined surface with the shaft 30, and can rotate while sliding and moving by the pressure received by the pressure receiving plate 40. have.

When described in more detail through the enlarged drawing of FIG. 3, the guide tube 50 moves the shaft 30 in the longitudinal direction when the pressure receiving plate 40 is pressed and slides in the longitudinal direction of the duct 100. As a guide member that forms a guide groove for moving and rotating at the same time, a spiral groove 51 which is formed in a hollow shape and penetrates in the longitudinal direction of the shaft 30 may be formed on the outer peripheral surface. In other words, the guide pipe 50 forms an empty space in which both ends are open and the shaft 30 is coupled therein, and a helical groove 51 extending in the longitudinal direction through the empty space and the outside is formed on the outer circumferential surface. I can. The shaft 30 is inserted into and coupled to the empty space of the guide tube 50 formed as described above, and the protrusion 31 protruding toward the outer circumferential surface of the shaft 30 may be inserted and disposed in the spiral groove 51. The spiral groove 51 forms a path into which the protrusions 31 protruding to the outer circumferential surface of the shaft 30 are inserted, and are formed through the guide pipe 50 in the longitudinal direction of the outer circumferential surface, and bent in a diagonal line to form a shaft 30 When) moves in the longitudinal direction, it is possible to rotate the shaft 30 moving in the longitudinal direction by guiding it to a curved path of an oblique line.

In other words, in the flow control device 1 of the present invention, the pressure receiving plate 40 is disposed at the inlet 101 of the duct 100, and one end of the shaft 30 is connected to the pressure receiving plate 40, The rotating plate 20 and the fixed plate 10 are formed extending from and may be spaced apart from each other at a predetermined interval. The pressure receiving plate 40 slides toward the outlet 102 by receiving the explosive pressure introduced through the inlet 101, and the pressure receiving plate 40 and the fixed shaft 30 can also move. As the shaft 30 slides along the longitudinal direction by the pressure received by the pressure receiving plate 40, the shaft 30 is discharged by the protrusion 31 of the shaft 30 inserted into the spiral groove 51. When moving toward 102), it slides while rotating. At this time, as the shaft 30 rotates, the rotating plate 20 fixedly coupled to the outer circumferential surface of the shaft 30 rotates by the same angle at which the shaft 30 rotates and slides toward the outlet 102 while the fixed plate 10 ) Can be blocked, and will be described in detail in FIGS. 5 and 6 in relation to such an operation process.

On the other hand, the flow control device 1 of the present invention is installed at the end of the shaft 30 extending in the direction in which the fluid is discharged, and includes a shaft restoration unit 60 that transmits a restoring force when the shaft 30 slides. do.

The shaft restoring part 60 is for moving the shaft 30 slidably moved by the outlet port 102 to its original position, and may be disposed at a position adjacent to the outlet port 102 to be connected to the shaft 30. The shaft restoring part 60 includes a tube 61 whose inside is sealed so that the shaft 30 is movably inserted at one end, and the restoring force of the shaft 30 is generated by the pressure inside the tube 61. I can. Specifically, the shaft restoring part 60 includes a rod-shaped tube 61 that is elongated and has an empty center, and the shaft 30 is movably inserted into one end of the tube 61 and an adjustment screw ( 62) can be combined to seal the interior. The tube 61 is formed in a shape of a circular or polygonal long hollow body with an empty space formed therein, and one end is inserted into the interior of the duct 100 and disposed at the rear end of the fixing plate 10, and the other end is bent at least once. It may be disposed so as to be exposed to the outside of the duct 100. In the tube 61 arranged in this way, the end of the shaft 30 is inserted at one end and the adjusting screw 62 may be coupled to the other end. In particular, a piston 32 is formed at the end of the shaft 30 inserted into the tube 61, and the adjusting screw 62 is screwed to the other end of the tube 61 to seal the inside of the tube 61. I can. Accordingly, when the shaft 30 slides by the pressure receiving plate 40, the inside of the sealed tube 61 slides, and when the pressure applied to the pressure receiving plate 40 is removed, the inside of the tube 61 It can be restored by pressure. In addition, the tube 61 may adjust the restoring force of the shaft 30 by adjusting the volume inside the tube 61 by the adjusting screw 62 coupled to the other end. The shaft restoring part 60 is a member for moving the shaft 30 moved to the rear end by simply sliding and moving to the original position, and various elastic members having elastic force may be applied. However, the present invention does not need to be replaced with elastic members having different elastic forces in order to adjust the restoring force of the shaft 30, and the volume inside the tube 61 is adjusted through the adjusting screw 62 of the shaft restoring part 60. By easily adjusting, the restoring force of the shaft 30 can be easily adjusted.

Hereinafter, with reference to FIGS. 5 and 6 will be described in detail the operation process of the flow control device of the present invention.

5 and 6 are operational diagrams of the flow control device of FIG. 1.

5 and 6, in (a) and (b) of FIGS. 5 and 6, an explosion pressure is generated at the inlet 101 of the duct 100, and the pressure receiving plate 40 receives the explosion pressure. It shows a diagram in which the shaft 30 and the rotating plate 20 rotate while sliding toward the outlet 102. Figures 5 and 6 (a) is an operation diagram showing the operating process of the flow control device 1 of Figure 4, Figures 6 and 6 (b) is the operating process viewed by cutting the line bb in Figure 4 It is an operation diagram showing.

First, referring to FIG. 5A, when an explosion pressure is generated at the inlet 101 of the duct 100, the pressure receiving plate 40 disposed adjacent to the inlet 101 receives the explosion pressure and the outlet 102 ), and the shaft 30 fixed to the pressure receiving plate 40 also slides in the direction of the outlet 102 together with the pressure receiving plate 40. When the shaft 30 slides toward the outlet 102, the protrusion 31 rotates along the helical groove 51 at a predetermined angle and moves toward the outlet 102. Accordingly, the rotating plate 20 rotates together with the shaft 30 to become closer to the fixed plate 10, and the area where the second fluid transfer port 22 overlaps the first fluid transfer port 12 is reduced. In other words, before the pressure is input to the pressure receiving plate 40, the rotating plate 20 is opened so that the second fluid transfer port 22 overlaps with the first fluid transfer port 12, and is then opened. When pressure is input, the first fluid movement port 12 may be closed by rotational movement. As shown in (b) of FIG. 5, the shaft 30 rotates while sliding, so that the rotating plate 20 may also rotate at a certain angle. At this time, the second fluid transfer port 22 of the rotating plate 20 overlaps with the first fluid transfer port 12 and then rotates, reducing the overlapped area, and gradually blocks the flow path. In such a situation, if pressure is continuously applied from the inlet 101, the rotating plate 20 may operate as shown in FIG. 6.

Subsequently, referring to (a) of FIG. 6, when the pressure receiving plate 40 is continuously subjected to the explosion pressure from the inlet 101, the shaft 30 continues to move toward the outlet 102 and the rotating plate 20 is rotated and disposed in close contact with the fixing plate 10, and the second fluid transfer port 22 may be completely blocked. As shown in the drawing, the rotating plate 20 rotates by the rotational movement of the shaft 30, and when the second fluid movement port 22 is rotated by about 45°, the first fluid movement port 12 is completely While being arranged to be shifted, the flow path in the duct 100 may be completely blocked. Accordingly, it is possible to prevent a phenomenon in which the explosion pressure is transmitted to the outlet 102 of the duct 100 and protect workers and equipment. In particular, the flow control device 1 of the present invention blocks the flow path in the duct 100 when the explosion pressure occurs, and after the explosion occurs, it can be moved to the original position by the shaft restoration unit 60, so that the explosion pressure is generated. According to this, there is a feature that can open and close the inner flow path of the duct 100.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but those of ordinary skill in the art to which the present invention pertains have found that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. You can understand. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting.

1: flow control device 10: fixed plate
11: first through hole 12: first fluid transfer port
20: rotating plate 21: second through hole
22: second fluid movement port 30: shaft
31: protrusion 32: piston
40: pressure receiving plate 50: guide tube
51: spiral groove 60: shaft restoration unit
61: tube 62: adjusting screw
100: duct 101: inlet
102: outlet

Claims (6)

In the flow control device installed inside the duct to control the flow rate of the fluid flowing therein,
A fixing plate fixed in the duct and radially formed around a central first through hole to form a passage through which fluid moves;
A rotating plate having a second through-hole overlapping the first through-hole in the center, overlapping the fixing plate so as to be rotatable about the second through-hole, and having at least one second fluid transfer port communicating with the first fluid transfer port ;
A shaft that passes through the first through hole and the second through hole, slides in a longitudinal direction, extends outside the fixing plate and the rotation plate, and contacts the rotation plate in an inclined plane with respect to the sliding movement direction; And
A flow control device comprising a pressure receiving plate fixed to the shaft extending in a direction in which the fluid is introduced to receive an explosion pressure input with the fluid. The method of claim 1,
The rotating plate includes a guide tube having a helical groove through which the shaft passes and a protrusion protruding toward the outer circumferential surface of the shaft is inserted. The method of claim 1,
The rotating plate is opened by overlapping with the first fluid transfer port before pressure is input to the pressure receiving plate, and is rotated when pressure is input to the pressure receiving plate to close the first fluid transfer port. Flow control device. The method of claim 1,
A flow control device further comprising a shaft restoring unit installed at an end of the shaft extending in a direction in which the fluid is discharged, and transmitting a restoring force when the shaft slides. The method of claim 4,
The shaft restoring unit includes a tube in which the shaft is movably inserted into one end portion and is sealed inside, and generates a restoring force of the shaft by the pressure inside the tube. The method of claim 5,
The flow control device further comprises a control screw for adjusting the volume inside the tube at the other end of the tube.

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