KR101922331B1 - High-pressure volume booster using high-pressure servo valve - Google Patents

Abstract

According to an embodiment of the present invention, a high-pressure volume booster using a high-pressure servo valve is provided with an input port, an output port communicating with an external tank, and an outlet port, the outlet port being connected to the input port, the output port, A main flow path for guiding a movement path of the main flow path; And a lift frame installed on the main flow passage and capable of switching between a supply position for blocking the discharge port and communicating the input port and the output port and an exhaust position for blocking the input port and communicating the output port and the discharge port do.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a high-pressure volumetric booster using a high-

The present invention relates to a high-pressure volume booster using a high-pressure servo valve, and more particularly, to a high-pressure booster that uses a high-pressure servo valve to control an output pressure of an external tank when a fluid such as air or gas is supplied, pressure booster using a high-pressure servo valve capable of precisely controlling the flow amount and flow pressure of fluid such as air, gas, and the like.

In general, a servo valve is a valve that controls the flow rate or pressure using a function of an input signal. These servo valves are widely used in various industrial fields such as various hydraulic systems for automobiles, automatic transmissions for automobiles, and construction machines.

However, such a servo valve has a limitation in controlling minute pressure or flow rate, so that there is a problem that the flow amount of fluid and flow pressure can not be precisely controlled.

Korean Patent Registration No. 10-0285928 (Mar. 15, 2001)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a high-pressure volume booster using a high-pressure servo valve capable of precisely controlling the flow rate and flow pressure of fluid output to an external tank.

Further objects to be solved by the present invention will become more apparent from the following detailed description and drawings.

According to an embodiment of the present invention, a high-pressure volume booster using a high-pressure servo valve is provided with an input port, an output port communicating with an external tank, and an outlet port, the outlet port being connected to the input port, the output port, A main flow path for guiding a movement path of the main flow path; And a lift frame installed on the main flow passage and capable of switching between a supply position for blocking the discharge port and communicating the input port and the output port and an exhaust position for blocking the input port and communicating the output port and the discharge port do.

In the main frame, an exhaust space having an open bottom may be formed inside the input port.

Further, a connection space may be formed in the lower portion of the input port and the exhaust space, and a connection space communicating with the input port and the exhaust space may be formed.

Further, an internal space may be formed in the connection space and the lower portion of the output port, the internal space being in communication with the connection space and the output port.

Pressure booster using the high-pressure servo valve includes an auxiliary frame coupled to the exhaust space and forming a first main passage communicating with the input port together with the connection space, the auxiliary portion passing through the center portion in a vertical direction to form auxiliary holes; And a first opening and closing frame inserted into the first main passage and capable of opening and closing the main frame by being brought into contact with or spaced from the auxiliary frame by raising and lowering.

The lifting frame is provided in the inner space and defines an upper space and a lower space. The lifting and lowering frame can elevate and lower the first opening and closing frame according to changes in internal pressure of the lower space.

The high-pressure volume booster using the high-pressure servo valve may further include an upper elastic body installed on the first opening / closing frame and disposed in the connection space to provide an elastic force to the first opening / closing frame.

Wherein the lifting frame comprises: a lifting plate for partitioning the upper space and the lower space; And

And a protruding piece disposed at a lower portion of the first opening and closing frame and connected to an upper portion of the lifting and lowering frame to transmit elevating and lowering driving force to the first opening and closing frame and having a plurality of moving holes penetrating in the left and right direction.

The high-pressure volume booster using the high-pressure servo valve may further include a second opening / closing frame installed on the upper portion of the elevating plate and corresponding to the auxiliary hole to open / close the auxiliary hole in accordance with the elevation / .

The elevating frame may further include a central rod formed at the center thereof with an insertion groove formed therein and protruding upward from a bottom surface of the insertion groove.

Wherein the second opening and closing frame comprises: a horizontal plate provided on an upper portion of the central rod; A vertical bar connected to a bottom surface of the horizontal plate and fitted to the center bar; And a lower elastic body provided around the vertical bar and provided between the horizontal plate and the bottom surface of the insertion groove to provide an elastic force to the horizontal plate.

The horizontal plate may have an insertion hole having a central portion penetrating in the vertical direction.

The elevating frame may further include a vertical bar protruding upward from the central rod and inserted into the insertion hole.

Pressure booster using the high-pressure servo valve includes a first valve connected to the first auxiliary passage and the second auxiliary passage and communicating or blocking the first auxiliary passage and the second auxiliary passage; And a second valve connected to the fourth auxiliary passage and the fifth auxiliary passage and communicating or blocking the fourth auxiliary passage and the fifth auxiliary passage.

Wherein the first auxiliary flow path is formed in the main frame and communicates with the input port and the second auxiliary flow path is provided inside the main frame to communicate with the fourth auxiliary flow path and the lower space, The auxiliary flow path is provided inside the main frame and communicates with the fifth auxiliary flow path communicating with the discharge port.

Wherein the high-pressure volume booster using the high-pressure servo valve is electrically connected to the first valve and the second valve, and transmits a control signal to the first valve and the second valve, respectively, And a control panel capable of opening and closing the valve.

The high-pressure volume booster using the high-pressure servo valve according to the present invention not only can control the output pressure of an external tank to which a fluid is supplied, such as air, gas, There is an effect that precise control can be performed.

1 is a sectional view of a high-pressure volume booster using a high-pressure servo valve according to an embodiment of the present invention.
FIG. 2 is a diagram showing a waiting step of a high-pressure volume booster using the high-pressure servo valve of FIG. 1;
FIG. 3 is a view showing a supply step of supplying a fluid to an external tank by a high-pressure volume booster using the high-pressure servo valve of FIG. 1;
FIG. 4 is a view showing an evacuation step in which a high-pressure volume booster using the high-pressure servo valve of FIG. 1 evacuates fluid in an external tank through a discharge port.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments of the present invention can be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described below. The embodiments are provided to explain the present invention to a person having ordinary skill in the art to which the present invention belongs. Accordingly, the shape of each element shown in the drawings may be exaggerated to emphasize a clearer description.

1 is a sectional view of a high-pressure volume booster using a high-pressure servo valve according to an embodiment of the present invention. Referring to FIG. 1, the high-pressure volume booster 1 using the high-pressure servo valve according to the present embodiment is for precisely controlling the flow amount and the flow pressure of the fluid supplied to the external tank, and includes a main frame 100, The first valve 110, the first opening and closing frame 120, the auxiliary frame 140, the auxiliary flow path 210, the first valve 310, the second valve 320, the control panel 300, the lift frame 400, 2 opening and closing frame 420.

At one side of the main frame 100, the input port 101 is recessed. On the other side of the main frame 100, an output port 103 is formed. On the other side of the main frame 100, an outlet 220 is formed. A supply pipe (not shown) through which fluid is supplied may be inserted into the input port 101, and an exhaust pipe (not shown) through which the fluid is discharged may be inserted into the output port 103. The fluid discharged from the outlet 103 is supplied to the outer tank (not shown) through the exhaust pipe, so that the inner pressure of the outer tank can be increased. The fluid in the outer tank is discharged to the discharge port 220 through the outlet 103 so that the inner pressure of the outer tank can be reduced.

An exhaust space (E) having an open bottom is formed inside the input port (101) of the main frame (100). The exhaust space E communicates with the exhaust port 220 and the inner peripheral surface of the exhaust space E is threaded to be screwed to the outer peripheral surface of the auxiliary frame 140.

The connection space M is formed inside the main frame 100 and is disposed below the input port 101 and the exhaust space E. [ The connection space M is communicated with the input port 101 and the output port 103.

The internal space S is formed inside the main frame 100 and is disposed below the connection space M and the output port 103. The inner space S is partitioned into an upper space A and an inner space B by a lifting plate 410 to be described later.

The main flow path 110 is connected to the input port 101, the output port 103, and the discharge port 220 to provide a path through which the fluid can move. The main flow path 110 may include a first main flow path 111 and a second main flow path 112.

The first main passage 111 connects the input port 101 and the inner space S. The inner circumferential surface of the connection space M and the outer circumferential surface of the auxiliary ring 141 are spaced from each other in the left- Lt; / RTI > An opening / closing ring 121 to be described later is inserted into the first main flow passage 111.

The first opening and closing frame 120 has an upper end inserted into the first main passage 111 and can open and close the first main passage 111 together with the auxiliary frame 140 by lifting and lowering. The first opening and closing frame 120 may include an opening and closing ring 121 and an opening and closing frame 122.

The opening / closing ring 121 has an opening / closing hole 121a formed in a cylindrical shape and having a central portion penetrating in the vertical direction. The auxiliary ring 141 is inserted into the opening / closing hole 121a. The outer peripheral surface of the opening / closing ring 121 is in contact with the inner peripheral surface of the connection space M. The opening / closing ring 122 protrudes radially from the lower end of the opening / closing ring 121. The opening and closing frame 122 is separated from or connected to the auxiliary frame 142 by the lifting and lowering, thereby opening and closing the first main flow channel 111.

The upper elastic body 150 is installed around the connection space M and the auxiliary ring 141 to provide an elastic force downward to the first opening and closing frame 120. The upper end portion of the upper elastic body 150 is supported by the elastic groove 150a and the lower end portion is supported by the first opening and closing frame 120.

The upper end of the auxiliary frame 140 is fixed to the connection space M by being engaged with the exhaust space E. The auxiliary frame 140 includes an auxiliary ring 141 and an auxiliary frame 142.

The outer circumferential surface of the upper end portion of the auxiliary ring 141 is screwed with the inner circumferential surface of the exhaust space E and fixed to the connection space M. The auxiliary ring 141 has an auxiliary hole 141a passing through the center in a vertical direction, and has a ring-shaped horizontal section. The outer peripheral surface of the lower end portion of the auxiliary ring 141 forms the first main flow path together with the inner peripheral surface of the connection space M. [

One end of the auxiliary frame 142 is connected to the lower end of the auxiliary ring 141 and protrudes in the radial direction of the auxiliary ring. The other end of the auxiliary frame 142 is located below the first opening and closing frame 120, and may be located at a lower portion of the opening and closing frame 122. The upper end of the auxiliary frame 142 may be in contact with or spaced from the lower surface of the first opening and closing frame 120 as the first opening and closing frame 120 moves up and down.

The auxiliary passage 210 is for connecting the first valve 310 and the second valve 320 to the input port 101, the output port 103, the discharge port 220 and the lower space B, A second auxiliary flow path 212, a third auxiliary flow path 213, a fourth auxiliary flow path 214, a fifth auxiliary flow path 215 and a sixth auxiliary flow path 216.

The first auxiliary flow path 211 is formed in the main frame 100 and is connected to the input port 101. The first auxiliary flow path 211 is connected to the second auxiliary flow path 212 through the first valve 310.

The second auxiliary flow path 212 is formed in the main frame 100 and is connected to the first auxiliary flow path 211 through the first valve 310. The second auxiliary flow path 212 is connected to the fourth auxiliary flow path 214 through the third auxiliary flow path 213 and communicates with the lower space B through the sixth auxiliary flow path 216.

The fourth auxiliary flow path 214 is connected to the fifth auxiliary flow path 215 through the second valve 320 and is connected to the second auxiliary flow path 212 through the third auxiliary flow path 213. The fifth auxiliary flow path 215 is connected to the fourth auxiliary flow path 214 through the second valve 320 and communicates with the discharge port 220.

The sixth auxiliary flow path 216 communicates with the lower space B and provides a path for the fluid to move to the lower space B.

The first valve 310 is connected to the first auxiliary passage 211 and the second auxiliary passage 212 and opens and closes the communication between the first auxiliary passage 211 and the second auxiliary passage 212 .

The second valve 320 is connected to the fourth auxiliary passage 214 and the fifth auxiliary passage 215 to open / close (communicate or block) between the fourth auxiliary passage 214 and the fifth auxiliary passage 215 .

The first valve 310 and the second valve 320 may be solenoid-type valves, and they are not limited to solenoid-type valves, and may be opened or closed using a voice coil or an electric motor.

The control board 300 is electrically connected to the first valve 310 and the second valve 320, and a PCB board can be used. The control panel 300 can open and close the first valve 310 and the second valve 320 by transmitting control signals to the first valve 310 and the second valve 320, respectively.

The lifting frame 400 is installed on the main flow path 100. The lifting frame 400 cuts off the discharge port 220 by raising and lowering the supply port and connects the input port 101 and the output port 103, And an exhaust position for communicating the output port 103 and the exhaust port 220 can be switched.

The lifting frame 400 is installed in the inner space S to partition the inner space S into an upper space A and a lower space B. The lifting frame 400 may be moved up and down according to a change in the inner pressure of the lower space B to provide a lift driving force to the first opening and closing frame 120. The lifting frame 400 includes a lifting plate 410, a protruding piece 412, an insertion groove 414, a central rod 416, and a vertical rod 418.

The lifting plate 410 is installed in the inner space S in a disk shape to partition the inner space S into an upper space A and a lower space B. The center steel plate 410 is recessed to form an insertion groove 414.

A cylindrical protruding piece 412 is protruded upward from the lifting steel plate 410. The projecting pieces 412 are positioned below the opening and closing frame 122, and a plurality of moving holes 412a are formed to pass through in the left and right direction.

The central rod 416 is disposed at the lower portion of the auxiliary frame 140 and protrudes from the bottom surface of the insertion groove 414. [ The central rod 416 is disposed below the horizontal plate 421. The vertical bar 418 is protruded upwardly from the upper surface of the central rod 416 in a straight line. The vertical bar 418 is inserted through the insertion hole 421a to be described later to guide the movement of the second opening and closing frame 420. [

The second opening and closing frame 420 is installed on the upper portion of the insertion groove 414 and is disposed below the auxiliary frame 140 to correspond to the auxiliary hole 141a. The second opening and closing frame 420 can open or close the auxiliary hole 141a by lifting and lowering. The opening and closing frame 420 may include a horizontal plate 421, a vertical bar 423, and a lower elastic member 430.

The horizontal plate 421 is installed on the lower portion of the auxiliary frame 140 and the upper portion of the lift plate 410 and can open and close the auxiliary hole 141a by raising and lowering. The horizontal plate 421 is formed with an insertion hole 421a penetrating the center portion in the vertical direction and the horizontal plate 421 is guided up and down through the vertical rod 418 inserted in the insertion hole 421a.

The vertical bar 423 is connected to the lower portion of the horizontal plate 421 and has a hollow portion through which the central portion is vertically penetrated. The vertical bar 423 may have a cylindrical shape, and the central rod 416 is fitted to the hollow portion so that the second opening and closing frame 420 can be stably lifted and lowered.

The lower elastic body 430 is provided between the horizontal plate 421 and the bottom surface of the insertion groove 414 and is disposed around the vertical bar 423 to provide an elastic force to the horizontal plate 421.

Each of the O-rings 5 used in the present embodiment has a ring shape, and an elastic body such as rubber can be used. The O-rings 5 are used to maintain airtightness of each passage.

FIG. 2 is a view showing a waiting stage of a high-pressure volume booster using the high-pressure servo valve of FIG. 1, FIG. 3 is a view illustrating a supply step of supplying a fluid to an external tank using a high- And FIG. 4 is a view showing an evacuation step in which the high-pressure volume booster using the high-pressure servo valve of FIG. 1 evacuates the fluid of the external tank through the discharge port. Hereinafter, the operation of the high-pressure volume booster using the high-pressure servo valve according to the present embodiment will be described step by step with reference to FIG. 2 to FIG.

2, the fluid input through the input port 101 waits in the input port 101, the first auxiliary flow path 211, and the first main flow path 111. In this state, The first valve 310 blocks the first auxiliary flow path 211 and the second auxiliary flow path 212 and the first opening and closing frame 120 is lowered by the elastic force of the upper elastic body 150, 111).

3, the first valve 310 is opened and the first auxiliary flow path 211 and the second auxiliary flow path 212 are communicated with each other. At this time, the second valve 320 is closed and the fourth auxiliary passage 214 and the fifth auxiliary passage 215 are blocked. The fluid input through the input port 101 flows into the lower space B through the first auxiliary passage 211, the second auxiliary passage 212 and the sixth auxiliary passage 216. At this time, the internal pressure of the lower space B is raised, and the lifting frame 400 is raised by the internal pressure thus raised.

As the lifting frame 400 is lifted, the lifting frame 122 is pressed, and the first opening and closing frame 120 is lifted. At this time, the opening and closing frame 122 and the auxiliary frame 142 are vertically spaced apart, and the fluid in the first main flow channel 111 flows into the upper space A through the gap thus separated.

 The fluid introduced into the upper space A is discharged to the output port 103 through the second main flow path 112 through the moving hole 412a. The discharged fluid is supplied to the external tank so that the internal pressure of the external tank can be raised. That is, when the supplying step is performed, the internal pressure of the external tank can be raised by a predetermined pressure.

4, the first valve 310 is closed and the second valve 320 is opened to allow the fourth auxiliary passage 214 and the fifth auxiliary passage 215 to communicate with each other. At this time, the fluid in the lower space B is discharged to the discharge port 220 via the sixth auxiliary passage 216, the third auxiliary passage 213, the fourth auxiliary passage 214 and the fifth auxiliary passage 215 do. Accordingly, the internal pressure of the lower space B is reduced, and the lifting frame 400 is lowered.

As the lifting frame 400 is lowered, the first opening and closing frame 120 is lowered so that the opening and closing frame 122 and the auxiliary frame 142 come into contact with each other. Therefore, the first main flow passage 111 is in a cut-off state.

As the lifting frame 400 is lowered, the second opening and closing frame 420 is lowered. At this time, the lower end of the auxiliary frame 140 is spaced apart from the upper end of the horizontal plate 421 of the second opening and closing frame 420, thereby creating a gap.

The fluid in the outer tank is discharged to the discharge port 220 through the output port 103, the second main flow passage 112, the upper space A, the auxiliary hole 141a and the exhaust space E. Therefore, the internal pressure of the external tank is reduced.

As a result, the high-pressure volume booster using the high-pressure servo valve according to the present embodiment can control the output pressure of the external tank to which the fluid is supplied, such as air and gas, And the flow pressure can be precisely controlled.

Although the present invention has been described in detail by way of preferred embodiments thereof, other forms of embodiment are possible. Therefore, the technical idea and scope of the claims set forth below are not limited to the preferred embodiments.

1: High-pressure volume booster using a high-pressure servo valve 100: Main frame
101: input port 103: output port
120: first open / close frame 121: open / close ring
122: opening / closing frame 140: auxiliary frame
141: Auxiliary ring 142: Auxiliary ring
150: upper elastic body 300: control panel
310: first valve 320: second valve
400: lifting frame 410: lifting plate
412: protruding piece 412a: moving hole
414: insertion groove 416: center hole
418: vertical bar 420: second opening and closing frame
421: horizontal plate 421a: insertion hole
423: vertical bar S: inner space
A: Upper space B: Lower space
M: Connection space E: Exhaust space

Claims (8)

delete A main frame having an input port, an output port communicating with the outer tank, and a discharge port formed on an outer circumferential surface, respectively, the main flow path being connected to the input port, the output port and the discharge port, And
And a lift frame installed in the main flow passage and capable of switching between a supply position for blocking the discharge port and communicating the input port and the output port and an exhaust position for blocking the input port and communicating the output port and the discharge port, ,
The main frame includes:
An exhaust space having an open bottom is formed in the inside of the input port,
A connection space disposed below the input port and the exhaust space and communicating with the input port and the exhaust space,
A first main flow path formed at the lower end of the connection space and the output port and formed with an internal space communicating with the connection space and the output port and coupled to the exhaust space to communicate with the input port together with the connection space, An auxiliary frame having a central portion vertically penetrating through which auxiliary holes are formed; And
And a first opening and closing frame inserted in the first main passage and capable of opening and closing the main frame by being brought into contact with or spaced from the auxiliary frame by raising and lowering,
The elevating frame includes:
The high-pressure volume booster is installed in the internal space to define an upper space and a lower space, and elevates and descends according to a change in internal pressure of the lower space, thereby providing an elevating driving force to the first opening and closing frame.
The method of claim 2,
Pressure booster using the high-pressure servo valve,
Further comprising: an upper elastic body provided on the first opening / closing frame and disposed in the connection space to provide an elastic force to the first opening / closing frame.
The method of claim 2,
The elevating frame includes:
A steel plate for partitioning the upper space and the lower space; And
And a protruding piece disposed at a lower portion of the first opening and closing frame and connected to an upper portion of the lifting and lowering plate to transmit elevating driving force to the first opening and closing frame and having a plurality of moving holes penetrating in the left and right direction,
Pressure booster using the high-pressure servo valve,
And a second opening / closing frame installed on the upper part of the lifting plate and corresponding to the auxiliary hole, for opening / closing the auxiliary hole according to the lifting / lowering of the lifting frame.
The method of claim 4,
The elevating frame includes:
An insertion groove is formed in the central portion,
And a central rod protruding upward from a bottom surface of the insertion groove,
Wherein the second openable /
A horizontal plate provided on an upper portion of the central rod;
A vertical bar connected to a bottom surface of the horizontal plate and fitted to the center bar;
And a lower elastic body provided around the vertical bar and provided between the horizontal plate and the bottom surface of the insertion groove to provide an elastic force to the horizontal plate.
The method of claim 5,
The horizontal plate has an insertion hole having a central portion penetrating in the vertical direction,
Wherein the lifting frame further comprises a vertical bar protruding upward from the central rod and inserted into the insertion hole.
The method of claim 2,
Pressure booster using the high-pressure servo valve,
A first valve connected to the first auxiliary passage and the second auxiliary passage and communicating or blocking the first auxiliary passage and the second auxiliary passage; And
And a second valve connected to the fourth auxiliary passage and the fifth auxiliary passage and communicating or blocking the fourth auxiliary passage and the fifth auxiliary passage,
Wherein the first auxiliary passage is formed in the main frame and communicates with the input port,
The second auxiliary passage is installed inside the main frame and communicates with the fourth auxiliary passage and the lower space,
And the fourth auxiliary flow path is communicated with the fifth auxiliary flow path provided inside the main frame and communicated with the discharge port.
The method of claim 7,
Pressure booster using the high-pressure servo valve,
And a control valve electrically connected to the first valve and the second valve and capable of opening and closing the first valve and the second valve by transmitting control signals to the first valve and the second valve, High-pressure volume booster using high-pressure servo valve.

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