WO2012057391A1

WO2012057391A1 - Flow path conversion valve

Info

Publication number: WO2012057391A1
Application number: PCT/KR2010/008069
Authority: WO
Inventors: 강만곤; 권순광; 최현철; 정기철; 전상규
Original assignee: 효성굿스프링스 주식회사
Priority date: 2010-10-28
Filing date: 2010-11-16
Publication date: 2012-05-03
Also published as: KR101206194B1; KR20120044544A

Abstract

The present invention pertains to a flow path conversion valve, which comprises: a tubular body (3) having at least one or more inlets (13) for supplying fluid to the inside, two or more outlets (15, 16) for the selective crossover discharge of the internal fluid, drain holes (17, 18) respectively formed for draining the fluid which is not discharged via the outlets (15, 16) but remains in the inside and securing sections (19) respectively protruded on the inner peripheral surface at each said inlet (13), said outlets (15, 16) and said drain holes (17, 18); an operation rod (5) concentrically mounted in the tubular body (3), having a plurality of holding sections (21-1, 21-2, 21-3, 21-4) protruded on the outer peripheral surface to be spaced apart from each other, and connected to an operation means at one side end, which is exposed to the outside in a fluid-sealing state, so that the operation rod (5) reciprocates back and forth by the operation means in the tubular body (3) in the axial direction; and a plurality of movable valve bodies (7-1, 7-2, 7-3, 7-4) movably mounted on the outer peripheral surface of the operation rod (5) and disposed between each of the holding sections 21-1, 21-2, 21-3, 21-4) so as to individually correspond to each of the securing sections (19).

Description

Flow path switching valve

The present invention relates to a flow path switching valve, and more particularly, to a flow path switching valve that allows a plurality of valve bodies to be selected by one operating means, that is, an actuator to select an outlet of the working fluid.

In general, a flow path switching valve used in an energy recovery device or the like is applied to various types of valve bodies as a means for opening and closing a flow path. For example, a spool type control valve of a linear spool valve device disclosed in US Patent No. 5,797,429 is mentioned. Can be.

As shown in FIG. 1, the spool-type control valve device is capable of cross-feeding high-pressure seawater or brine to the high-pressure vessel 105 as the spool-type piston 103 moves. It is characterized by a structure.

However, such a conventional control valve device 101 is a high-pressure vessel 105 to the operating fluid inside the cylinder 107, that is, sea water or water by the spool-type piston 103 reciprocating inside the sleeve-type cylinder 107 In order to allow the piston 103 to slide smoothly in the cylinder 107 when the working fluid is a fluid having little viscosity such as seawater or water, the inner peripheral surface of the cylinder 107 There was a problem in that leakage of the working fluid between the piston 103 outer circumferential surface could not be avoided.

In order to solve this problem, a three-way poppet valve disclosed in US Pat. No. 7,540,230 has been proposed, which uses a poppet-shaped control valve to minimize the leakage between the cylinder and the piston. Energy efficiency can be increased by eliminating, but since a plurality of poppet valves are used, a plurality of corresponding actuators must be used, and each actuator must be controlled separately, which complicates the overall structure or control, and thus the equipment and maintenance. There was a problem that the cost of such an increase.

As another example, a rotary control valve other than the above-mentioned reciprocating control valve is proposed in US Pat. No. 7,600,535. In this patent, an external power is used to rotate an inner rotor to open and close a casing and a rotor flow path, thereby desired system response. However, since the rotary control valve is required to maintain a constant gap between the rotor and the casing, the leakage between the gaps is inevitable, and thus there is a problem that the system efficiency is lowered due to such leakage.

The present invention has been made to solve the problems of the conventional flow path switching valve as described above, the valve body for switching the flow path when the opening and closing the valve by using the water, such as sea water or water as a working fluid smoothly inside the valve body The purpose of the present invention is to improve the energy efficiency of the system to which the valve is applied, in addition to the flow path switching characteristics of the valve.

In addition, the opening and closing operation of the valve body by a single operation means to greatly simplify the structure of the entire system to which the valve is applied, and there is another purpose to significantly reduce the cost required for installation or maintenance .

In addition, by increasing the assemblability of the valve body as well as the actuating rod on which the valve body is mounted, it is possible to reduce the work or cost required for maintenance such as repair or replacement of the valve body or the actuating rod, and to increase the durability of the valve body itself, thereby increasing the durability of the valve body. Another purpose is to increase lifespan.

In order to achieve the above object, the present invention provides at least one inlet opening to supply fluid to the fluid supply source, two or more outlets open to both sides of the inlet to selectively cross-discharge the fluid inside, A drain opening is formed at both ends to drain drained internal fluid without being discharged through the outlet, respectively, and a tubular body having a seating portion projecting from the inner circumferential surface between the respective inlets, outlets, and drain holes, respectively. ; Is mounted coaxially in the tube, a plurality of locking portions protrude in a state spaced apart from each other on the outer circumferential surface, the operating means is connected to the one end exposed outside in the fluid sealing state is axially in the tube by the operating means An actuating rod adapted to reciprocate back and forth with the body; And a plurality of movable valve bodies which are movably mounted on the working rod outer circumferential surface and disposed between the engaging portions so as to correspond one-to-one toward the respective seating portions.

In addition, when the movable valve body pressurized by one of the locking portions between the inlets is seated on one of the seating portions between the inlets, the other locking portion flows in through the inlet. The movable valve body is formed at a position where the movable valve body can be dropped from the other seat by the pressure of the fluid, and the one end catching part is the movable valve at the one seat seat between the outlet of the one end and the drain port. It is preferably formed at a position where the sieve can be dropped, and the other end engaging portion is preferably formed at a position to allow the movable valve body to be seated in the other end seating portion between the other end outlet and the other side drain port.

In addition, when the movable valve body pressurized by the other locking portion of the locking portion across the inlet is seated on the other seating portion of the seating portion between the inlet, the one locking portion flows through the inlet The movable valve body is formed at a position where the movable valve body can be dropped from the one seated part by the pressure of the fluid, and the one end stopper part is provided at the one end seated part between the one end end and the one drain port. It is preferable that the sieve is formed in a position where it can be seated, and the other end engaging portion is formed at a position where the movable valve body can be dropped from the other end seating portion between the other end outlet and the other side drain port.

In addition, the operating rod is disposed in the interval between the seating portion, the central rod is bolted on both ends; An end rod disposed in an outer section of the seating portion and having a bolt hole formed at an inner end thereof toward the center rod; And a connecting rod disposed between the center rod and each of the end bars, wherein a bolt hole is formed at an inner end facing the center rod, and a bolt is processed at an outer end facing the end rod.

In addition, the movable valve body is in the form of a poppet, a disk, or a hemisphere, and the seating portion is preferably in an inclined surface or planar shape to be in close contact with the inclined surface of the poppet, the plane of the disk, and the spherical surface of the hemisphere, respectively.

Moreover, it is preferable that the sealing ring fixed to either the said movable valve body or the said mounting part is interposed between the said movable valve body and the said mounting part.

1 is a longitudinal sectional view showing a conventional flow path switching valve.

Figure 2 is a partial longitudinal cross-sectional view showing a flow system to which the flow path switching valve is applied according to an embodiment of the present invention.

Figure 3 is a longitudinal cross-sectional view showing a state in which the operating rod of the flow path switching valve shown in Figure 2 located at the right end.

Figure 4 is a longitudinal cross-sectional view showing a state in which the operating rod of the flow path switching valve shown in FIG.

5 is a partial longitudinal cross-sectional view showing the poppet-type valve body of the flow path switching valve shown in FIG.

6 is a partial longitudinal cross-sectional view showing a spherical valve element of the flow path switching valve shown in FIG.

7 is a view showing a state in which a sealing ring is mounted on the poppet-type valve body shown in FIG.

FIG. 8 is a partial longitudinal sectional view showing the disk-shaped valve body of the flow path switching valve shown in FIG. 2, showing a state in which a sealing ring is mounted on the disk. FIG.

9 is a view showing a state in which the sealing ring is mounted to the seating portion of the tube in FIG.

10 is a longitudinal sectional view showing a state in which an operating rod of the flow path switching valve shown in FIG. 2 is located at the center;

Hereinafter, a flow path switching valve according to an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in Figs. 2 and 3, the flow path switching valve of the present invention is largely a tubular body 3, an operating rod 5, and a movable valve body 7-1,7-2,7-3,7-4. It is configured to selectively discharge the working fluid flowing from the fluid supply source 11 through one or more inlets 13 through two or

more outlets

15 and 16.

Here, the tubular body 3 is a part of the body of the flow path switching valve, and has a long pipe shape, one or more inlet 13 in the center, two or more outlets, one on each side of each inlet 13 16 and

drain openings

17 and 18 are open at both ends, respectively.

At this time, the inlet 13 is connected to the fluid supply source 11, as shown in Figure 2 is to supply the fluid to the inside of the tubular body 3, may be provided with one or more if necessary. At this time, the fluid supplied from the supply source 11, that is, the fluid whose flow is controlled by the flow path switching valve 1, includes water, in particular, a fluid having little viscosity such as sea water or brine. In addition, two or

more outlets

15 and 16 are opened at opposite sides of the inlet 13 of the tubular body 3 so as to selectively cross-discharge the fluid inside the tubular body 3 according to the operation of the valve body 7. have. In addition, the

drain ports

17 and 18 are open at both ends of the tube 3 and are not discharged through the

outlets

15 and 16, and the fluid inside the tube 3 is excluded and the fluid source 11 or other low It is supposed to drain to a water source.

On the other hand, the tubular body 3 has each of these inlets 13,

outlets

15, 16, and the other inlets 13,

outlets

15, 16, and drain holes adjacent to the drain holes 17, 18 ( The seating portions 19 protrude from the inner circumferential surfaces between the 17 and 18, respectively, and the tubular body is disposed at the inner circumferential surfaces and the seating portions 19-3 and 19-4 between the seating portions 19-1 and 19-2. (3) The inner circumferential surface to the end face is preferably formed in a reduced diameter as shown, and the remaining inner circumferential surface forms a large diameter portion through which the valve body 7 can move.

The actuating rod 5 is connected to an external actuating means to move the valve body 7 in the tubular body 3 to control the flow path of the flow path switching valve 1 and coaxially in the tubular body 3. It is mounted, one end is exposed to the outside of the tube (3) in a fluid sealed state is connected to the operating means to reciprocate forward and backward in the tube (3) in the axial direction, for this purpose is coupled to both ends of the tube (3) The sliding cap 29 is supported to be slidably in a state of maintaining watertightness.

Moreover, the operation rod 5 has a plurality of locking portions 21-1 on the outer circumferential surface in order to pressurize and move the plurality of movable valve bodies 7-1, 7-2, 7-3, 7-4 fitted on the outer circumferential surface. , 21-2, 21-3, 21-4 are formed to protrude in a state spaced apart from each other, as shown in Figure 3, the engaging portion 21- sandwiching the inlet 13 of the tubular body (3) The engaging portion 21-1 on the left side of 1, 21-2 is the entrance to the seating portion 19-1 on the left side of the seating portions 19-1, 19-2 with the inlet 13 therebetween. When the movable valve element 7-1 located just to the left of the 13 is pressurized and seated, the engaging part 21 on the right side of the engaging parts 21-1 and 21-2 with the inlet 13 interposed therebetween. -2) does not cause interference such that the movable valve body 7-2 immediately to the right of the inlet 13 may fall off the right seating portion 19-2 by the pressure of the fluid introduced through the inlet 13. It is formed in the non-position, and the locking portion 21-3 located at the left end of the tubular body 3 is between the left end outlet 15 and the left drain port 17. It is formed at a position where the left end movable valve body 7-3 can be pushed away from the left end seating portion 19-3, and the right end locking portion 21-4 of the tubular body 3 is The right end movable valve element 7-4 is formed at a position not causing interference so that it can be seated on the right end seating portion 19-4 positioned between the right end outlet 16 and the right drain port 18. have.

Similarly, as shown in FIG. 4, the actuating rod 5 has a catching portion 21-2 on the right side of the catching portions 21-1 and 21-2 sandwiching the inlet 13 of the tubular body 3. ) Movable valve body 7-2 on the right side of the inlet 13 to the seating portion 19-2 on the right side of the seating portions 19-1, 19-2 with the inlet 13 interposed therebetween. When pressurized and seated, the locking part 21-1 on the left side of the locking parts 21-1 and 21-2 with the inlet 13 interposed therebetween is applied to the pressure of the fluid flowing through the inlet 13. By this, the movable valve body 7-1 on the left side of the inlet 13 is formed at a position not causing interference so that it can fall from the left seating portion 19-1, and is located at the right end of the tubular body 3. The engaging portion 21-4 is pressurized so that the right end movable valve element 7-4 falls from the right end seating portion 19-4 positioned between the right end outlet 16 and the right drain port 18. It is formed in a position where it can be, the left end engaging portion (21-3) of the tubular body (3) It is formed in that the valve body (7-3) that cause interference so as to be seated on the seating portion (19-3), the left end positioned between the left end outlet 15 and the left drain population 17 position.

To this end, the operating rod 5 may be made in the form of a rod protruding a plurality of engaging portions (21-1, 21-2, 21-3, 21-4) on the circumferential surface, it is configured by combining a plurality of single rods More preferably, each of the rods can be assembled in a variety of forms, for example, as shown in Figures 3 and 4 may be assembled by a coupling method by bolts and bolt holes, according to the operation rod (5) is composed of a central rod (5-1), a terminal rod (5-2), and a connecting rod (5-3).

Here, the center rod 5-1 is disposed in the section between the seating portions 19-1 and 19-2 with the inlet 13 interposed therebetween, i.e., in the center of the working rod 5, as shown. Bolts 23 are processed at both ends. In addition, the end bar (5-2) is coupled to both ends of the operating rod (5), is disposed in the outer section of the seating portion (19-3, 19-4) of the tubular body (3), the center rod (5-1) The bolt holes 25 are respectively machined at the inner ends facing the c) to engage the bolts 23 of the connecting rods 5-3. Finally, the connecting rod 5-3 is a rod connecting the central rod 5-1 and the end rod 5-2, and is provided between the center rod 5-1 and each end rod 5-2. A plurality of bars may be provided. A bolt hole 25 is formed at an inner end of the connecting rod 5-3 toward the center bar 5-1, and a bolt 23 is disposed at an outer end of the connecting rod 5-3 toward the end bar 5-2. Is processed to be serially coupled from the central rod 5-1 to the end rod 5-2.

The plurality of movable valve bodies 7-1, 7-2, 7-3, and 7-4 are movably mounted on the outer circumferential surface of the actuating rod 5 and are discharged by the actuating rod 5 to the outlet 15, 16. ) And the flow paths to the drain holes 17 and 18 selectively cross-opening and closing, each of the engaging portions (21-1, 21-2, 21-3, so as to correspond one-to-one toward the seating portion 19), 21-4).

In addition, each of the movable valve bodies 7-1, 7-2, 7-3, 7-4 has a poppet as shown in Figs. 3 to 5 in order to achieve watertightness of a working fluid such as water having little viscosity. The poppet type movable valve body (7-1,7-2,7-3,7-4) is preferably formed in a type, and a sealing ring (31) is mounted between the actuation rod (5) and the actuation rod. (5) Seal between the movable valve body (7-1,7-2,7-3,7-4) moving on the surface of the operating rod (5). At this time, the seating part 19 of the tubular body 3 is formed in the inclined surface of a corresponding shape so that the inclined surface of a poppet may contact.

Further, the movable valve bodies 7-1, 7-2, 7-3, and 7-4 may be processed into a spherical surface as shown in FIG. 6, and a sealing ring (e.g., as shown in FIG. 27) may be additionally installed.

Further, the movable valve bodies 7-1, 7-2, 7-3, 7-4 may be in the form of discs, as shown in Figs. 8 and 9, wherein the seating portion 19-1 is flat Or it may be formed concave in a shape corresponding to the disk surface of the disk-type movable valve body (7-1), it is mounted on either the movable valve body (7-1) or the seating portion (19-1) sealing ring ( 27 may be interposed between the seating portion 19-1.

Now, the operation of the flow path switching valve 1 of the present invention configured as described above is as follows.

The flow path switching valve 1 of the present invention is the operating rod 5 in the neutral state shown in Fig. 10 is located in the center of the tube 3, at this time the left and right ends of the movable valve body (7-3, 7-4) Are respectively seated on the seating portions 19-3, 19-4 of the corresponding left and right ends, and the movable valve bodies 7-1, 7-2 on the left and right sides of the inlet 13 respectively correspond to the seating portions 19, respectively. -1,19-2). Accordingly, as shown, the working fluid introduced from the fluid supply source 11 into the pipe 3 through the inlet 13 passes through the left and right movable valve bodies 19-1 and 19-2 and the left and

right outlets

15 and 16. Ejected simultaneously on both sides. At this time, since the inflow of the working fluid is blocked by the movable valve bodies 7-3 and 7-4 at the left and right ends of the left and

right drain ports

17 and 18, there is no discharge of the working fluid.

When the operating rod 5 moves to the right side of the tube body 3 by the external operating means in the neutral state as described above, the engaging portion 21-1 of the operating rod 5 on the left side of the inlet 13 is the inlet 13. The movable valve element 7-1 on the left side is pressurized to be in close contact with the seating portion 19-1 on the left side of the inlet 13, as shown in FIG. 3, and thus from the inlet 13 to the left outlet 15. Subsequent flow paths are blocked. At the same time, since the locking portion 21-2 on the right side of the inlet 13 is sufficiently spaced to the right from the right seating portion 19-2 on the inlet 13, the movable valve body 7-2 on the right side of the inlet 13 is By the pressure of the working fluid flowing from the inlet 13 is pushed up to the right locking portion 21-2 to fall from the seating portion 19-2, thereby connecting the flow path from the inlet 13 to the right outlet 16 The working fluid introduced into the inlet 13 is discharged to the right outlet 16. At this time, the left end movable valve body 7-3 is pushed by the left end engaging portion 21-3, falling off the left end seating portion 19-3, and the left outlet 15 moves to the left drain port 17. It opens and drains the working fluid accommodated in the left end of the pipe, and the right end movable valve body 7-4 is pressurized to the right end by the pressure of the working fluid flowing into the inlet 13. ), The connection between the right outlet 16 and the right drain port 18 is blocked.

On the contrary, when the actuating rod 5 moves to the left side of the tubular body 3, the catching part 21-2 of the actuating rod 5 on the right side of the inlet 13 moves to the movable valve body 7-2 on the right side of the inlet 13. ) Is pressed to closely contact the seating portion 19-2 on the right side of the inlet 13 as shown in FIG. 4. Accordingly, the flow path leading from the inlet 13 to the right outlet 16 is blocked, and the locking portion 21-1 on the left side of the inlet 13 is sufficiently spaced to the left from the left seating portion 19-1 of the inlet 13. Therefore, the movable valve body 7-1 on the left side of the inlet 13 is pushed away from the left seating portion 19-1 by the pressure of the working fluid flowing from the inlet 13 and pushed to the left catching portion 21-1. I'm going. Accordingly, the flow passage from the inlet 13 to the left outlet 15 is continued, and the working fluid introduced into the inlet 13 is discharged to the outside through the left outlet 15. At this time, the right end movable valve body 7-4 is pushed by the right end engaging portion 21-4 to fall off the right end seating portion 19-4, whereby the right outlet 16 is the right drain port 18. ) To drain the working fluid contained in the right end of the pipe. At the same time, the left end movable valve body 7-3 is pressurized to the left end by the pressure of the working fluid flowing into the inlet 13, and the left end movable valve body 7-3 is in close contact with the left end engaging portion 19-3. The connection between the left drain port 17 is cut off.

Therefore, according to the flow path switching valve of the present invention, since four or more movable valve bodies are movably mounted to one operation rod to control opening and closing of the valve flow path, the operation means for operating the operation rod, that is, the actuator Using only one can significantly reduce the cost of equipment, maintenance or operation.

In addition, even when water such as seawater or water is used as the working fluid, the valve body smoothly moves inside the pipe, but no leakage of the working fluid occurs between the valve body and the pipe body, thereby greatly increasing the operating efficiency and reliability of the valve.

In addition, since the valve body is movable on the operating rod, and the operating rod is formed by assembling a plurality of single rods, the assembly of the valve body and the operating rod is greatly improved, and accordingly, the maintenance or replacement of the valve body or the operating rod is maintained. The operation and cost required for management can be reduced, and the valve body, which is a wear occurrence part, can be easily replaced, thereby greatly improving the endurance life of the entire valve.

Claims

One or more inlets open to supply fluid to the fluid supply, two or more outlets 15 and 16 open on both sides of the inlet to selectively cross-discharge the fluid therein, and open to both ends A tubular body each having a drain port formed to drain the internal fluid that is not discharged through the outlet, and having a seating portion projecting from an inner circumferential surface between the respective inlets, outlets, and drain ports;

Is mounted coaxially in the tube, a plurality of locking portions protrude in a state spaced apart from each other on the outer circumferential surface, the operating means is connected to the one end exposed outside in the fluid sealing state is axially in the tube by the operating means An actuating rod adapted to reciprocate back and forth with the body; And

And a plurality of movable valve bodies movably mounted on the working rod outer circumferential surface and disposed between the engaging portions so as to correspond one-to-one toward the respective seating portions.
According to claim 1,

When the movable valve body pressurized by one of the catching portions between the inlets is seated on one of the seating portions with the inlet interposed therebetween,

The other locking portion is formed at a position where the movable valve body can be dropped from the other seat by the pressure of the fluid introduced through the inlet,

The one end locking portion is formed at a position where the movable valve body can be dropped from the one end mounting portion between the one end of the outlet and the one side drain port,

And the other end locking portion is formed at a position to allow the movable valve body to be seated on the other end seating portion between the other end outlet and the other drain hole.
The method according to claim 1 or 2,

When the movable valve body pressurized by the other locking portion among the locking portions with the inlet is seated on the other seating portion among the seating portions with the inlet interposed therebetween,

The one side locking portion is formed at a position where the movable valve body can be dropped from the one seating portion by the pressure of the fluid introduced through the inlet,

The one end locking portion is formed at a position to allow the movable valve body to be seated on the one end mounting portion between the one end of the outlet and the one side drain port,

And the other end locking portion is formed at a position where the movable valve body can be dropped from the other end seating portion between the other end outlet and the other drain port.
The method of claim 3, wherein

The operating rod is disposed in the interval between the seating portion, the central rod is bolted on both ends;

An end rod disposed in an outer section of the seating portion and having a bolt hole formed at an inner end thereof toward the center rod; And

A flow path switching valve disposed between the center rod and each of the end rods, and a connecting rod having a bolt hole at an inner end facing the center rod and a bolt processed at an outer end facing the end rod.
The method of claim 3, wherein

The movable valve body is in the form of a poppet or hemisphere, the seating portion flow path switching valve, characterized in that the inclined surface to be in close contact with each of the inclined surface of the poppet or the spherical surface of the hemisphere.
The method of claim 5,

And a sealing ring fixed to either the movable valve body or the seating portion between the movable valve body and the seating portion.
The method of claim 3, wherein

The movable valve body is in the form of a disk, and the seating portion is a flow path switching valve, characterized in that the flat form so as to be in close contact with each of the plane of the disk.
The method of claim 7, wherein

And a sealing ring fixed to either the movable valve body or the seating portion between the movable valve body and the seating portion.