KR20190116666A - Multi-channel solenoid valve assembly and movable type pressure/flow precision control system using the same - Google Patents

Abstract

The present invention relates to a multi-channel solenoid valve assembly capable of providing a plurality of solenoid valves with different sizes in multiple channels at the same time, and to a movable pressure/flow rate precise control system using the multi-channel solenoid valve assembly capable of precisely controlling the pressure and flow rate of a fluid passing through a pipe by individually controlling the plurality of solenoid valves provided in the valve combination. A plurality of valve insertion holes is formed radially in a valve fixing body in a state in which an inlet and an outlet of the valve assembly are positioned in the pipe. The solenoid valves are provided in the valve insertion holes, respectively. By selectively opening or closing any one or more of the plurality of solenoid valves according to the pressure and flow rate to be controlled, the pressure and flow rate of the fluid flowing into the inlet are precisely controlled and discharged to the outlet.

Description

Multi-channel solenoid valve assembly and movable type pressure / flow precision control system using the same}

The present invention relates to a solenoid valve assembly and a pressure / flow control system using the same, and more particularly, to a multi-channel solenoid valve assembly capable of simultaneously installing a plurality of solenoid valves of different sizes in multiple channels, and a plurality of solenoid valve assemblies installed in the valve assembly. The present invention relates to a mobile pressure / flow precision control system using a multi-channel solenoid valve combination that can individually control solenoid valves of the valve and control the pressure and flow rate of the fluid passing through the pipe precisely.

The valve is an actuating mechanism that allows opening and closing of passages for passing, blocking or controlling fluid. The valve is used to control the amount or pressure of fluid such as water, steam, oil, etc. flowing into the pipe by adjusting the degree of opening or closing. That is, the valve selectively opens or closes the flow of fluid to control the amount or pressure of fluid flowing in the pipe.

These valves are divided into various forms and functions depending on the type of fluid and the purpose of use, and are used throughout the industry. It is common to use only one valve per pipe. However, there is a problem that precise control is difficult because the amount of fluid passing through the pipe must be controlled to the degree of opening of the pipe.

On the other hand, in recent years, the use of solenoid valves that are easy to apply to pipes and easy to open / close control has been increasing. The solenoid valve acts as a solenoid valve that actuates the plunger when it is energized, opens the valve and automatically closes by the plunger weight when the electricity is cut off. However, although the solenoid valve has such an advantage, it is difficult to control precisely like a general valve because it controls the amount of fluid passing through the pipe as the plunger moves up or down.

In this regard, the Republic of Korea Utility Model Publication No. 20-0204819 is known in the solenoid valve is installed in the middle of the flow path through which various types of fluid flows to selectively open and close the flow of the fluid by the operation of the electromagnet.

However, since the solenoid valve serves to open and close the flow of the fluid through the pipe, there is a problem that fine control of the pressure and flow rate of the fluid cannot be performed.

KR 20-0204819 Y1

It is an object of the present invention to provide a multichannel solenoid valve combination capable of installing up to 9 channels of solenoid valves of different sizes simultaneously.

In addition, an object of the present invention is to provide a multi-channel solenoid valve assembly which is located on the pipe in which the fluid is introduced and discharged, which can be installed so that a plurality of solenoid valves inclined radially about the pipe.

Meanwhile, another object of the present invention is to install a plurality of large solenoid valves and a plurality of small solenoid valves in one combination by varying sizes in the solenoid valve assembly, and selectively open / close the plurality of solenoid valves to allow the fluid to pass through the pipe. It is to provide a mobile pressure / flow precise control system using a multi-channel solenoid valve combination that can precisely control the pressure and flow rate of the gas.

Furthermore, another object of the present invention is to stack a control controller for controlling a solenoid valve in a movable rack, and to move and control the pressure / flow precisely using a multi-channel solenoid valve combination that can be used by simply moving to a place requiring control of the solenoid valve. To provide a system.

The present invention is a valve assembly 100 for controlling the pressure and flow rate of the fluid flowing on the pipe 10, the valve assembly 100 is formed with an inlet port 110 through which the fluid is introduced, A discharge port 120 through which fluid is discharged is formed at a lower end thereof, and a valve fixing body 130 is formed in a shape of a light beam narrowing circumference between the inlet 110 and the outlet 120, and the valve fixing body 130 is formed. ) Is formed with a plurality of valve insertion holes 140 disposed radially to be inclined toward the upper outward direction of the pipe 10, the inlet 110 and the inside of the valve fixing body 130 A plurality of first passages 150 are formed to connect the valve insertion holes 140 to communicate with each other, and a second passage 160 is formed to connect the outlet 120 and the valve insertion holes 140 to communicate with each other. The valve insertion hole 140 has a plurality of solenoid valves As the 200 is installed and individually opened or closed, the pressure and the flow rate of the fluid introduced into the inlet 110 are selectively controlled so that the fluid passes the first flow path 150 and the second flow path ( Through the outlet 160, the pressure and flow rate of the fluid through the outlet 120 is discharged in a precisely controlled state.

In addition, the valve insertion hole 140 of the present invention, the first valve insertion hole 142, the solenoid valve 200 of the large diameter is installed, and the solenoid of the relatively smaller diameter than the first valve insertion hole 142 And a second valve insertion hole 144 in which the valve 200 is installed.

Furthermore, in the valve insertion hole 140 of the present invention, three first valve insertion holes 142 are disposed to be spaced at equal intervals around the valve fixing body 130 to form three channels. A pair of second valve insertion holes 144 are disposed between the valve insertion holes 142 to form six channels to control the pressure and flow rate of the fluid in a total of nine channels.

On the other hand, the present invention is a control system for controlling the valve assembly 100 provided with a plurality of solenoid valve 200, the valve assembly 100 is formed with an inlet 110 through which fluid is introduced into the upper end, A discharge port 120 through which fluid is discharged is formed at a lower end thereof, and a valve fixing body 130 is formed in a shape of a light beam narrowing circumference between the inlet 110 and the outlet 120, and the valve fixing body 130 is formed. ) Is formed with a plurality of valve insertion holes 140 disposed radially to be inclined toward the upper outward direction of the pipe 10, the inlet 110 and the inside of the valve fixing body 130 A plurality of first passages 150 are formed to connect the valve insertion holes 140 to communicate with each other, and a second passage 160 is formed to connect the outlet 120 and the valve insertion holes 140 to communicate with each other. The valve insertion hole 140 has the inlet A solenoid valve 200 for controlling the pressure and flow rate of the fluid introduced into the 110 is installed, and a movable rack 300 for controlling the solenoid valve 200 is positioned near the valve assembly 100. The mobile rack 300 includes a keyboard, a mouse, and a monitor, which are integrated into a rack mount type KVM rack 310, and are electrically connected to the solenoid valve 200 and introduced into the inlet 110. The fluid of the solenoid valve 200 passes through the first passage 150 through the second passage 160 and is discharged in a precisely controlled state through the outlet 120 through the outlet 120. A PXI controller 320 selectively controls the open / close and a power supply 330 for supplying power to the KVM rack 310 and the PXI controller 320.

Wherein the pipe 10 of the present invention, the first pressure sensor 20 is installed to monitor the pressure, the second pressure sensor 30 is installed to monitor the flow rate, the PXI controller 320, the power supply An analog signal electrically connected to the supply device 330 and an analog signal for measuring voltage and current, and a pressure analog signal of the pipe 10 electrically connected to the first pressure sensor 20 and the second pressure sensor 30. And an AIO module 322 for inputting and outputting an analog flow signal of the pipe 10, and electrically connected to the solenoid valve 200 to control on / off of the solenoid valve 200 through input and output of a digital signal. A DIO module 324 is further included.

According to the present invention, a plurality of valve insertion holes 140 are radially formed in the valve fixing body 130 in a state in which the inlet 110 and the outlet 120 of the valve assembly 100 are positioned on the pipe 10. The solenoid valve 200 is installed in the valve insertion hole 140, respectively, and selectively opens or closes any one or more than one of the plurality of solenoid valves 200 according to the pressure and flow rate to be controlled to inlet 110. By precisely controlling the pressure and flow rate of the fluid (1) introduced into the discharge port 120 has an effect that can be discharged.

In addition, in the present invention, the valve insertion hole 140 may have three first valve insertion holes 142 in which the solenoid valve 200 of a large size may be installed, and six solenoid valves 200 in which the small size of the solenoid valve 200 may be installed. Divided into the second valve insertion hole 144, the solenoid valve 200 can be installed in nine channels in the valve assembly 100, and each solenoid valve 200 is movable rack 300 through the signal cable 230. Electrically connected to the PXI controller 320 located in the at least one of the plurality of solenoid valves 200 is opened or closed by a control signal generated from the KVM rack 310 fluid (1) passing through the pipe 10 (1) The pressure and flow rate of) can be precisely controlled.

Furthermore, the present invention is configured to move the KVM rack 310, PXI controller 320, the power supply 330 and the interface panel 340 to the movable rack 300 for the control of the solenoid valve 200 integrally. In addition, by electrically connecting the signal cable 230 of the solenoid valve 200 with the interface panel 340, there is an effect that can be easily changed to use the installation site as needed.

1 is a perspective view of a multichannel solenoid valve assembly according to an embodiment of the present invention.
2 is a front view of a multichannel solenoid valve assembly according to an embodiment of the present invention.
3 is a plan view of a multichannel solenoid valve assembly according to an embodiment of the invention.
4 is a cross-sectional view taken along line AA ′ of FIG. 3.
5 is a block diagram of a mobile pressure / flow precision control system using a multi-channel solenoid valve combination according to an embodiment of the present invention.
Figure 6 is a detailed view showing a movable rack in a mobile pressure / flow precision control system using a multi-channel solenoid valve combination according to an embodiment of the present invention.
7 is a flow chart of operation of a mobile pressure / flow precision control system using a multi-channel solenoid valve combination according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described to be easily carried out by those of ordinary skill in the art.

1 is a perspective view of a multichannel solenoid valve assembly according to an embodiment of the invention.

The valve assembly 100 is installed on a pipe 10 through which fluid such as water, steam, oil, and the like flow. The upper end of the valve assembly 100 is formed with a circular inlet 110 through which the fluid is introduced, and the lower end is formed with a circular outlet 120 through which the fluid introduced through the inlet 110 is discharged.

The valve fixing body 130 is formed to protrude outward between the inlet 110 and the outlet 120 in the valve assembly 100. The valve fixing body 130 has a wide upper portion in the circumference between the inlet port 110 and the outlet port 120, and the lower portion thereof becomes narrower as it goes downward.

The valve assembly 100 has a plurality of valve insertion holes 140 disposed radially so as to be inclined outwardly with respect to the pipe 10 to be installed. At this time, the valve insertion hole 140 is formed to be inclined toward the upper outer direction.

Each valve insertion hole 140 is provided with a solenoid valve 200 for controlling the strength and flow rate of the fluid pressure. The solenoid valve 200 is electronically controlled to open and close according to whether electricity is supplied to the valve body 210, the plunger 220 embedded in the valve body 210, and exposed to the outside of the valve body 210. Signal cable 230 is included. The control signal and electricity are supplied by the signal cable 230 to move the plunger 220 forward or backward to adjust the pressure and flow rate of the fluid passing through the valve insertion hole 140. Since the solenoid valve 200 is one of the known valve pressure and flow rate control mechanisms, the description of the detailed principle and detailed configuration will be omitted.

1 is a perspective view of a multichannel solenoid valve assembly according to an embodiment of the present invention, FIG. 2 is a front view of a multichannel solenoid valve assembly according to an embodiment of the present invention, and FIG. 3 is a multichannel solenoid according to an embodiment of the present invention. 4 is a cross-sectional view taken along line AA ′ of FIG. 3. 2 to 4 omit the illustration of the pipe 10 and the solenoid valve 200.

When the valve assembly 100 is viewed from the front, a plurality of valve insertion holes 140 are disposed radially around the inlet 110 and the outlet 120 around the upper end of the valve fixing body 130. In addition, the valve fixing body 130 is formed as a whole when viewed in a plane.

In addition, the plurality of valve insertion holes 140 may be arranged to form an equal interval. In addition, the upper end of the valve insertion hole 140 is formed flat for the installation of the solenoid valve 200. At this time, the flat surface of the valve insertion hole 140 is formed to be perpendicular to the outer periphery of the valve fixing body (130).

A first flow path 150 is formed at the upper side of the valve fixing body 130 to connect the inlet 110 and the valve insertion hole 140 to allow the fluid 1 to pass therethrough. The first flow path 150 is formed in plural as the number of the valve insertion hole 140. That is, the first passage 150 allows each valve insertion hole 140 and the inlet 110 to communicate independently.

In addition, a second passage 160 is formed at the lower side of the valve fixing body 130 to connect the outlet 120 and the valve insertion hole 140 to allow the fluid 2 to pass therethrough. In this case, a plurality of second passages 160 may be formed as many as the number of the valve insertion holes 140. Therefore, the second passage 160 allows each valve insertion hole 140 and the outlet 120 to communicate independently.

On the other hand, the solenoid valve 200 is provided in plurality in each valve insertion hole 140, each valve insertion hole 140 is connected to the independent first flow path 150 and the inlet 110, Since the two passages 160 and the outlet 120 are connected, the pressure and flow rate of the fluid 1 introduced into the inlet 110 may be selectively controlled by any one of the plurality of valve insertion holes 140.

In addition, the fluid 1 passing through the inlet 110 may pass through the first passage 150 to the valve insertion hole 140, and the fluid 1 passing through the valve insertion hole 140 passes through the second passage ( Pass through 160 may be discharged to the outlet (120).

That is, as the solenoid valve 200 is individually opened or closed, the solenoid valve 200 selectively controls the pressure and the flow rate of the fluid 1 introduced into the inlet 110 so that the fluid 1 passes through the first flow path 150 and the second flow path. The pressure and flow rate of the fluid 1 may be discharged in a precisely controlled state through the passage 160 through the outlet 120. In this case, the solenoid valve 200 may simultaneously open or close one or more than one.

Furthermore, the opening and closing degree of the plunger 220 of the solenoid valve 200 installed in the plurality of valve insertion holes 140 may be set differently. Thus, by using any one or any one or more of the plurality of solenoid valves 200 through the outlet 120 in the state of precisely controlled the strength and flow rate of the fluid 1 introduced into the inlet 110 ( 10) can be discharged.

Meanwhile, the valve insertion hole 140 is provided with a solenoid valve 200 having a diameter smaller than that of the first valve insertion hole 142 and the first valve insertion hole 142 in which the large diameter solenoid valve 200 is installed. The second valve insertion hole 144 is included. That is, the first valve insertion hole 142 is relatively larger in diameter than the second valve insertion hole 144. The diameter of the plunger 220 of the solenoid valve 200 varies according to the diameters of the first valve insertion hole 142 and the second valve insertion hole 144.

By dividing the valve insertion hole 140 into a large diameter and a small diameter, it is possible to selectively control any one of the plurality of valve insertion holes 140 by distinguishing the difference in physical diameter. That is, when it is desired to discharge more fluid 1 introduced into the inlet 110 to the outlet 120, the solenoid valve 200 installed in the first valve insertion hole 142 may be selected and controlled. On the contrary, when it is desired to discharge less fluid 1 introduced into the inlet 110 to the outlet 120, the solenoid valve 200 installed in the second valve insertion hole 144 may be selected and controlled.

On the other hand, in the valve insertion hole 140, the first valve insertion hole 142 is disposed at three places so as to be spaced apart at equal intervals on the outer circumference around the valve fixing body 130. Since three first valve insertion holes 142 are disposed, the user can control the pressure and flow rate of the fluid 1 through three channels of the solenoid valve 200 installed in the first valve insertion hole 142.

Further, the second valve insertion hole 144 in the valve insertion hole 140 is disposed in three pairs with the first valve insertion hole 142 interposed therebetween with respect to the valve fixing body 130. As a result, three pairs of the second valve insertion holes 144 are disposed, and the solenoid valve 200 installed in the second valve insertion hole 144 can be controlled in six channels to control the pressure and flow rate of the fluid 1.

That is, the user can selectively control the solenoid valve 200 with a total of nine channels so that the fluid 1 flowing through the inlet 110 can be precisely discharged through the outlet 120. In other words, the user can precisely control the flow of the fluid 1 by opening or closing any one or more of the total of nine solenoid valves 200.

5 is a block diagram of a mobile pressure / flow precision control system using a multi-channel solenoid valve combination according to an embodiment of the present invention, Figure 6 is a mobile pressure / flow precision using a multi-channel solenoid valve combination according to an embodiment of the present invention FIG. 7 is a flowchart illustrating a movable rack in detail in a control system.

Hereinafter, a mobile pressure / flow precision control system using a multi-channel solenoid valve combination according to an embodiment of the present invention will be described in detail.

A system for controlling the solenoid valve 200 (see FIG. 1) described above is installed to be movable near the valve assembly 100.

The control system includes a KVM rack 310 in which a keyboard, a mouse, and a monitor are integrally formed in a rack mount type, a PXI controller 320 electrically connected to and controlled from the solenoid valve 200, and a power supply for supplying power. 330 and an interface panel for connecting the power and signal cables 230. The KVM rack 310, the PXI controller 320, the power supply 330, and the interface panel 340 are stacked and installed in the mobile rack 300. The lower portion of the movable rack 300 is installed a plurality of casters can be easily moved. The mobile rack 300 also serves to protect the KVM rack 310, the PXI controller 320, the power supply 330, and the interface panel 340 from vibration / humidity / dust.

In addition, the control system includes a first pressure sensor 20 for pressure monitoring and a second pressure sensor 30 for flow rate monitoring. The first pressure sensor 20 and the second pressure sensor 30 are installed on the pipe 10.

The KVM rack 310 is a rack mounted type, and as described above, a keyboard, a mouse, and a monitor are integrally configured, and the solenoid valve 200 may be selectively controlled by an input device of the keyboard and the mouse. That is, by selecting one of the nine solenoid valves 200 to control the Open or Close. As the output device of the monitor, the opening / closing state of the entire solenoid valve 200 may be monitored or the control information of the PXI controller 320 and the power supply information of the power supply 330 may be checked.

The PXI controller 320 is for precise pressure control of the solenoid valve 200. The hybrid chassis and the main controller (CPU) are built in consideration of compatibility with various equipment, and the AIO module 322 and the DIO module 324 are provided. To ensure the variety of operations. The PXI controller 320 controls various input / output signals of the KVM rack 310 and performs control and monitoring of the solenoid valve 200.

At this time, the AIO module 322 is a circuit for inputting and outputting analog signals and measures voltage and current. The AIO module 322 is electrically connected to the power supply 330 and the first pressure sensor 20 and the second pressure sensor 30 to monitor the voltage and current analog signals consumed by the power supply 330. The pressure analog signal monitoring of the pipe 10 by the first pressure sensor 20 and the flow rate analog signal of the pipe 10 by the second pressure sensor 30 may be monitored. The AIO module 322 delivers the received analog signal to the KVM rack 310 through the PXI controller 320.

The DIO module 324 is a circuit for controlling the on / off of the solenoid valve 200 through the digital signal input and output. The DIO module 324 transmits the status signal of the solenoid valve 200 to the KVM rack 310 through the PXI controller 320. In addition, the DIO module 324 serves to transmit the control signal of the KVM rack 310 to the solenoid valve 200 through the PXI controller 320 and the power supply 330. When a control signal is sent to open or close any one of the plurality of solenoid valves 200 through the KVM rack 310, the solenoid valve 200 is operated by the corresponding control signal.

The KVM rack 310 receives a USB or DVI signal from the main controller of the PXI controller 320 and outputs a screen to the monitor, and controls the main controller through a keyboard and a mouse. On the other hand, the PXI controller 320 runs on an operating system (OS) such as, for example, Windows 7.

The power supply 330 supplies 220V AC single phase power input from a phase change or power generation facility to the KVM rack 310, the PXI controller 320, the solenoid valve 200, the first pressure sensor 20, and the second pressure sensor ( 30) to supply power.

The power supply device 330 includes two SMPSs for supplying power to the first pressure sensor 20 and the second pressure sensor 30 and two SMPSs for driving the solenoid valve 200. In this case, SMPS refers to a switch control type power supply device that converts AC power into DC power using a switching transistor.

In addition, the power supply 330 controls the solenoid valve 200 by driving an SSR (contactless relay) with a signal input from the PXI controller. The power supply 330 measures power consumption by using a current measurement resistor when supplying power to the solenoid valve 200, and transmits it to the PXI controller 320.

The interface panel 340 is formed on the rear side of the PXI controller 320. The signal cables 230 of the solenoid valve 200 and various input / output cables of the KVM rack 310, the power cables of the power supply 330, Various terminals connecting the cables of the first pressure sensor 20 and the second pressure sensor 30 are arranged. The interface panel 340 may be provided with a plurality of LEDs indicating whether the power and the control signal are operated by turning on / off.

On the other hand, the KVM rack 310 is installed with the control software to control the desired pressure and flow rate in a manner to selectively open / close a total of nine solenoid valves 200. At this time, the control software of the solenoid valve 200 can be controlled independently of each solenoid valve 200 and integrated control of the entire solenoid valve 200.

Through this, it is possible to precisely control the desired pressure and flow rate by selectively opening / closing each flow path formed by the nine solenoid valves 200 installed in one valve assembly 100.

Furthermore, while the solenoid valve 200 is composed of nine channels, the volume and weight occupied by the valve assembly 100 can be reduced, so that the solenoid valve 200 can also be effective in reducing the cost of the control system.

The following describes the operation of the control system of the present invention with the control software described above.

In normal times, the individual control of the solenoid valve 200 (see FIG. 1) monitors data through the KVM rack 310 and proceeds with real-time storage. At the time of pressure control of the solenoid valve 200, a target value is set, and data following the data is monitored and stored through the KVM rack 310.

Meanwhile, the analog I / O signal data generated by the AIO module 322 of the PXI controller 320 is calibrated through data calibration.

1: fluid
DESCRIPTION OF SYMBOLS 10 Piping 20 1st pressure sensor 30 2nd pressure sensor
100: valve combination
110: inlet 120: outlet
130: valve fixed body
140: valve insertion hole
142: first valve insertion hole 144: second valve insertion hole
150: first euro 160: second euro
200: solenoid valve
210: valve body 220: plunger 230: signal cable
300: movable rack
310: KVM Rack
320: PXI Controller
322: AIO module 324: DIO module
330: power supply 340: interface panel

Claims (5)

In the valve assembly 100 for controlling the pressure and flow rate of the fluid flowing on the pipe 10,

The valve assembly 100,
An inlet 110 through which fluid is introduced is formed at an upper end thereof, and an outlet 120 through which fluid is discharged is formed at a lower end thereof, and a valve is fixed in a shape of a light beam bottom around the inlet 110 and the outlet 120. Body 130 is formed,
The valve fixing body 130 is formed with a plurality of valve insertion holes 140 disposed radially to be inclined toward the upper outward direction about the pipe 10,
A plurality of first passages 150 are formed in the valve fixing body 130 to connect the inlet 110 and the valve insertion hole 140 to communicate with each other, and the outlet 120 and the valve insertion hole are formed in the valve fixing body 130. A second flow path 160 is formed to connect the 140 to communicate with each other,

As the plurality of solenoid valves 200 are installed and individually opened or closed in the valve insertion hole 140, the pressure and the flow rate of the fluid introduced into the inlet 110 are selectively controlled, thereby allowing the fluid to be discharged. A multi-channel solenoid valve combination passing through one passage (150) through the second passage (160) to discharge the pressure and flow rate of the fluid in a precisely controlled state through the outlet (120).
The method of claim 1,
The valve insertion hole 140,
A first valve insertion hole 142 in which a large diameter solenoid valve 200 is installed, and a second valve insertion hole in which a solenoid valve 200 having a diameter smaller than the first valve insertion hole 142 is installed ( 144) multi-channel solenoid valve combination.
The method of claim 2,
The valve insertion hole 140,
The first valve insertion hole 142 is disposed at three positions so as to be spaced at equal intervals around the valve fixing body 130 to form three channels, and between the first valve insertion hole 142, a pair of A multi-channel solenoid valve combination for controlling the pressure and flow rate of the fluid in a total of nine channels by forming three second valve insertion holes (144).
In the control system for controlling the valve assembly 100 provided with a plurality of solenoid valve 200,

The valve assembly 100,
An inlet 110 through which fluid is introduced is formed at an upper end thereof, and an outlet 120 through which fluid is discharged is formed at a lower end thereof, and a valve is fixed in a shape of a light beam bottom around the inlet 110 and the outlet 120. Body 130 is formed,
The valve fixing body 130 is formed with a plurality of valve insertion holes 140 disposed radially to be inclined toward the upper outward direction about the pipe 10,
A plurality of first passages 150 are formed in the valve fixing body 130 to connect the inlet 110 and the valve insertion hole 140 to communicate with each other, and the outlet 120 and the valve insertion hole are formed in the valve fixing body 130. A second flow path 160 is formed to connect the 140 to communicate,
The valve insertion hole 140 is provided with a solenoid valve 200 for controlling the pressure and flow rate of the fluid introduced into the inlet 110,
The movable rack 300 for controlling the solenoid valve 200 is located in the vicinity of the valve assembly 100,

The movable rack 300,
A keyboard, a mouse, and a monitor are integrally formed in a rack mount type, and the KVM rack 310 is electrically connected to the solenoid valve 200, and the fluid introduced into the inlet 110 is connected to the first flow path 150. The PXI controller selectively controls the open / close of the solenoid valve 200 so that the pressure and flow rate of the fluid are precisely controlled through the outlet 120 through the second passage 160. (320) and a pressure / flow precision control system using a multi-channel solenoid valve combination further comprising a power supply (330) for supplying power to the KVM rack (310) and the PXI controller (320).
The method of claim 4, wherein
The first pressure sensor 20 is installed in the pipe 10 to monitor the pressure, and the second pressure sensor 30 is installed to monitor the flow rate.

The PXI controller 320,
The pressure of the pipe 10 is electrically connected to the power supply 330 and electrically connected to the analog signal for measuring voltage and current and the first pressure sensor 20 and the second pressure sensor 30. An AIO module 322 for inputting and outputting an analog signal and a flow rate analog signal of the pipe 10 and the solenoid valve 200 are electrically connected to each other so that the solenoid valve 200 is turned on and off through input and output of a digital signal. Mobile pressure / flow precision control system using a multi-channel solenoid valve combination further comprising a DIO module (324) for controlling the.

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