KR100757988B1 - Displacement sensing system of valve opening and shutting rate for control valve - Google Patents

Displacement sensing system of valve opening and shutting rate for control valve Download PDF

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Publication number
KR100757988B1
KR100757988B1 KR1020070025045A KR20070025045A KR100757988B1 KR 100757988 B1 KR100757988 B1 KR 100757988B1 KR 1020070025045 A KR1020070025045 A KR 1020070025045A KR 20070025045 A KR20070025045 A KR 20070025045A KR 100757988 B1 KR100757988 B1 KR 100757988B1
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South Korea
Prior art keywords
valve
cylinder
incompressible fluid
stem
pressure
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KR1020070025045A
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Korean (ko)
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조진식
김병문
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조진식
주식회사 바램
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Priority to KR1020070025045A priority Critical patent/KR100757988B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0025—Electrical or magnetic means
    • F16K37/0041—Electrical or magnetic means for measuring valve parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
    • F16K1/06—Special arrangements for improving the flow, e.g. special shape of passages or casings
    • F16K1/08—Special arrangements for improving the flow, e.g. special shape of passages or casings in which the spindle is perpendicular to the general direction of flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0236—Diaphragm cut-off apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

A displacement sensor is provided to quantitatively open and close a valve by using a pressure sensor to receive the opening rate of the valve as an electrical signal. A spring is installed at an upper portion of a stem(200). A piston is installed at an upper portion of the spring and is accommodated in a cylinder. A incompressible fluid is filled in a chamber formed by a piston and a cylinder. The chamber is sealed by an O-ring. A pressure sensor(600) for detecting the pressure caused by the incompressible fluid is provided in the cylinder. The pressure of the incompressible fluid is changed as the stem moves upward and downward and is detected through the pressure sensor to directly measure the opening rate of the valve.

Description

제어밸브용 밸브개폐율 측정변위센서{Displacement sensing system of valve opening and shutting rate for control valve}Displacement sensing system of valve opening and shutting rate for control valve

도 1은 본 발명에 따른 밸브개폐율 측정변위센서가 장착된 제어밸브를 도시한 도면1 is a view showing a control valve equipped with a valve opening and closing rate measurement displacement sensor according to the present invention

도 2는 본 발명에 따른 밸브개폐율 측정변위센서의 구성도를 도시한 도면2 is a view showing the configuration of the valve opening and closing rate measurement displacement sensor according to the present invention;

도 3은 O링에 의해 기밀을 유지하는 실린더 구조를 가지는 밸브개폐율 측정변위센서 의 구성도를 나타낸 단면도Figure 3 is a cross-sectional view showing the configuration of the valve opening and closing rate measurement displacement sensor having a cylinder structure to maintain the airtight by the O-ring

도 4는 다이어프램에 의해 기밀을 유지하는 실린더 구조를 가지는 밸브개폐율측정변위센서의 구성도를 나타낸 단면도4 is a cross-sectional view showing the construction of a valve opening and closing rate measurement displacement sensor having a cylinder structure which is kept airtight by a diaphragm.

도 5는 실린더내에 고탄성재를 채운 구조를 가지는 밸브개폐율 측정변위센서의 구성도를 나타낸 단면도5 is a cross-sectional view showing the configuration of the valve opening and closing rate measurement displacement sensor having a structure filled with a high elastic material in the cylinder

*도면의 주요부분에 대한 부호의 설명*       * Description of the symbols for the main parts of the drawings *

100....밸브본체 110....디스크       100 .... valve body 110 .... disc

120....밸브다이어프램       120 .... valve diaphragm

130....밸브커버 200....스템       130 .... valve cover 200 ...

300....O링식 밸브개폐율 측정변위센서       300 .... O-ring type valve open / close rate measurement displacement sensor

310....실린더 320....비압축성유체        310 .. Cylinder 320 .. Incompressible fluid

330....피스톤 331....O링       330 .... piston 331 .... O-ring

340....스프링 600....압력센서       340 ... spring 600 ... pressure sensor

1000....콘트롤러       1000 .... Controller

400....다이어프램식 밸브개폐율 측정변위센서       400 .... Differential valve opening and closing rate measurement displacement sensor

410....실린더 420....비압축성유체       410 .... cylinder 420 .... incompressible fluid

430....피스톤 431....다이어프램       430 ... piston 431 diaphragm

432....체결나사 440....스프링       432 .... Tightening screw 440 .... Spring

600....압력센서       600 ... pressure sensor

1000....콘트롤러       1000 .... Controller

500....고탄성재식 밸브개폐율 측정변위센서       500 .... High-elastic valve opening / closing rate measurement displacement sensor

510....실린더 520....고탄성재       510 .... cylinder 520 .... high elasticity

530....피스톤 600....압력센서 530 ... piston 600 ... pressure sensor

1000....콘트롤러       1000 .... Controller

본 발명은 밸브의 개폐율을 측정하는 변위센서에 관한 것으로, 보다 구체적으로는 제어밸브의 개폐를 담당하는 디스크의 상하 움직임에 따라 움직이는 스템, 스템의 상하움직임에 따라 압축 및 팽창하는 스프링, 스프링에 연결되어 밀폐된 실린더내의 비압축성 유체에 압력을 가하는 피스톤, 실린더와 피스톤의 기밀을 유지하기 위한 O링 또는 다이어프램, 실린더내 비압축성유체의 압력을 측정하는 압력센서로 구성되어 있으며, 밸브의 개폐율을 콘트롤러에서 전기적 신호로 수신하여 밸브의 정량적인 개폐 및 유량제어가 가능하도록 하는 밸브개폐율 측정변위센서에 관한 것이다.The present invention relates to a displacement sensor for measuring the opening and closing rate of the valve, and more specifically to the stem moving in accordance with the vertical movement of the disk responsible for opening and closing the control valve, the spring to compress and expand in accordance with the vertical movement of the stem, Consists of a piston that pressurizes an incompressible fluid in a closed cylinder, an O-ring or diaphragm for maintaining the airtightness of the cylinder and the piston, and a pressure sensor that measures the pressure of the incompressible fluid in the cylinder. It relates to a valve opening and closing rate measurement displacement sensor to receive an electrical signal from the valve to enable quantitative opening and closing of the valve.

기존의 감압밸브와 같은 컨트롤밸브 시스템의 경우 밸브의 개폐율은 파일럿 밸브의 2차측 설정압력에 맞추어 1차측의 유량 유입을 조절해주는 역할을 하는 것으로써 제어의 대상이 아닌 파일럿 밸브의 개폐에 따라 종속적으로 작동하는 개념이었다.
하지만 수자원 절약과 원활한 상수도시스템의 관리를 위해 자동적으로 시간대별로 사용유량에 맞추어 공급 압력 및 유량을 제어해주는 시스템에 대한 필요가 높아지고 있다.
이러한 자동제어밸브를 실현시키기 위해서는 밸브개폐율을 정량적인 전기신호로서 수신할 수 있어야 한다.
밸브의 개폐율은 2차측의 공급유량과 공급압력에 대해 직접적인 영향을 주는 인자로서 위와 같은 자동제어밸브를 구현하기 위해서 밸브개폐율에 대한 정확한 정보는 필수적이라 할 수 있다.
하지만 기존의 밸브개폐위치 지시기와 같은 경우 단순히 디스크에 부착된 스템을 밸브 밖으로 인출하여 밸브의 개폐율을 인덱스식 눈금으로 읽을 수 있도록 해주는 데에 그치고 있다.
또 다른 대안으로서 전자식 변위센서를 사용할 수도 있지만 가격이 고가이며, 설치시 방수의 문제와 밸브의 규격별로 각각 세팅을 해주어야 하는 번거로움이 있다. In the case of a control valve system such as a conventional pressure reducing valve, the opening / closing ratio of the valve plays a role of adjusting the flow rate of the primary side according to the set pressure of the secondary side of the pilot valve, and is dependent on the opening and closing of the pilot valve, not controlled. It was a concept that worked.
However, there is a growing need for a system that automatically controls the supply pressure and flow rate according to the flow rate for each time zone to save water resources and smoothly manage the water supply system.
In order to realize such an automatic control valve, the valve opening and closing rate must be able to be received as a quantitative electric signal.
The opening and closing rate of the valve is a factor directly affecting the supply flow rate and the supply pressure of the secondary side, and accurate information on the valve opening and closing rate is essential for implementing the above automatic control valve.
However, in the case of the existing valve opening position indicator, the stem attached to the disk is simply pulled out of the valve so that the opening and closing rate of the valve can be read with an index scale.
As an alternative, an electronic displacement sensor can be used, but it is expensive, and there is a problem of waterproofing during installation and troublesome setting of each valve size.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 제어밸브의 스템의 상하 운동에 따라 실린더 내부에 충진된 비압축성유체의 압력변화를 압력센서를 통해 전기적 신호로 검출함으로써 제어밸브의 개폐율을 보다 편리하게 측정할 수 있도록 하는 제어밸브용 밸브개폐율 측정변위센서를 제공하고자 하는데 목적이 있다.
본 발명에 따른 밸브개폐율 측정용변위센서는 P= a x + p 의 관계를 가지며, 여기서 P 는 임의의 밸브개폐도 a일때의 압축력, a는 밸브가 완전히 닫힌 상태의 디스크 하단에서 현재 위치의 디스크 하단까지의 거리, x 는 스프링 상수, p 는 밸브가 완전히 닫힌 상태의 초기압축력이다.The present invention has been made to solve the above problems, by detecting the pressure change of the incompressible fluid filled in the cylinder according to the vertical movement of the stem of the control valve by an electrical signal through the pressure sensor to control the opening and closing rate of the control valve An object of the present invention is to provide a valve opening and closing rate measurement displacement sensor for a control valve that can be more conveniently measured.
The displacement sensor for measuring the valve opening and closing rate according to the present invention has a relationship of P = ax + p, where P is a compressive force when any valve opening and closing degree a, a disk at the current position at the bottom of the disk with the valve completely closed. The distance to the bottom, x is the spring constant and p is the initial compression force with the valve fully closed.

초기 완전 차단상태에서의 압력센서의 신호와 완전 개방 상태에서의 압력센서의 전기적 신호를 수신하여 초기 완전 차단상태에서의 압력센서의 신호를 개폐율 0%에 대응시키고 완전 개방 상태에서의 압력센서의 신호를 개폐율 100%에 대응시키면 검출된 전기적 신호를 간단하게 밸브 개폐율로 환산할 수가 있게 된다.Receives the pressure sensor signal in the complete shut-off state and the electrical signal of the pressure sensor in the fully open state to correspond the signal of the pressure sensor in the initial complete shut-off state to 0% switching rate, and When the signal corresponds to the opening / closing ratio of 100%, the detected electrical signal can be easily converted into the valve opening / closing ratio.

위와 같이 만들어진 밸브 개폐율 측정 변위센서는 그 출력신호를 별도의 디스플레이에 표시할 수도 있으며, 밸브 콘트롤 시스템의 입력 신호로 활용할 수 도 있다.The valve opening / closing rate measurement displacement sensor can be displayed on a separate display or used as an input signal of the valve control system.

이를 위하여 본 발명에서는, 디스크의 승강으로 유로면적이 증감되며, 상기 디스크에 연동되는 밸브 스템이 밸브 외부까지 연장되는 제어밸브에 있어서, 상기 스템의 상부에 스프링이 설치되고 상기 스프링의 상부에 피스톤이 설치되어 실린더 내부에 수용되며, 상기 피스톤과 실린더가 이루는 챔버에는 비압축성유체가 충진되어 O링 또는 다이어프램에 의해 기밀이 유지되며, 상기 실린더에는 비압축성유체에서 유발되는 압력을 감지하기 위한 압력센서가 구비되어, 상기 스템의 승강에 따라 상기 비압축성유체의 압력변화를 상기 압력센서를 통해 이를 전기적 신호를 검출하여 밸브의 개폐율을 간접 측정할 수 있는 것을 특징으로 한다.
상기와 같은 목적을 달성하기 위한 본 발명에 따른 밸브개폐율 측정변위센서의 바람직한 실시예에 대하여 첨부된 도면을 참조하여 자세히 설명하면 다음과 같다.To this end, in the present invention, the flow path area is increased and decreased by the lifting and lowering of the disk, and in the control valve in which the valve stem linked to the disk extends to the outside of the valve, a spring is installed at the top of the stem and a piston is provided at the top of the spring. It is installed and accommodated in the cylinder, the chamber formed by the piston and the cylinder is filled with an incompressible fluid is maintained by the O-ring or diaphragm, the cylinder is provided with a pressure sensor for detecting the pressure caused by the incompressible fluid In addition, according to the lifting and lowering of the stem, the pressure change of the incompressible fluid is detected through the pressure sensor so that the electrical signal can be indirectly measured the opening and closing rate of the valve.
With reference to the accompanying drawings, a preferred embodiment of the valve opening and closing rate measurement displacement sensor according to the present invention for achieving the above object will be described in detail as follows.

먼저, 도 1은 본 발명에 따른 밸브개폐율 측정변위센서가 장착된 제어밸브를 도시한 도면이며, First, Figure 1 is a view showing a control valve equipped with a valve opening and closing rate measurement displacement sensor according to the present invention,

도 2는 본 발명에 따른 밸브개폐율측정변위센서의 구성도를 도시한 도면이며, 2 is a view showing the configuration of the valve opening and closing rate measurement displacement sensor according to the present invention,

도 3은 도 2의 O링식 밸브개폐율 측정변위센서의 구성도를 나타낸 단면도이며, 3 is a cross-sectional view showing the configuration of the O-ring valve opening and closing rate measurement displacement sensor of FIG.

도 4는 도 2의 다이어프램식 밸브개폐율 측정변위센서의 구성도를 나타낸단면도이며, Figure 4 is a cross-sectional view showing the configuration of the diaphragm valve opening and closing rate measurement displacement sensor of Figure 2,

도 5는 실린더내에 고탄성재를 채운 구조를 가지는 밸브개폐율 측정변위센서의 구성도를 각각 나타낸다.Fig. 5 shows a block diagram of a valve opening / closing rate measurement displacement sensor having a structure filled with a high elastic material in a cylinder, respectively.

먼저 도 1 및 2에 도시한 바와 같이 본 발명에 따르면, 상하 운동을 통해 밸브 본체(100)의 유로개폐를 결정하는 디스크(110)와 연결되고 차압 발생용 밸브챔버와 다이어프램(120)을 관통하여 외부로 까지 인출되어져 디스크(110)의 상하 움직임에 연동되는 스템(200)과 상기 스템(200)에 연결되는 스프링 및 피스톤에 의해 유발되는 실린더 내 비압축성유체의 압력변화를 압력센서(600)를 통해 전기적 신호로 인식하여 콘트롤러에 전달하는 밸브개폐율 측정변위센서(300,400,500)로 구성된다.First, as shown in Figs. 1 and 2, according to the present invention, connected to the disk 110 for determining the opening and closing of the flow path of the valve body 100 through the vertical movement and penetrates the valve chamber and the diaphragm 120 for the differential pressure generation The pressure change of the incompressible fluid in the cylinder caused by the stem 200, which is drawn out to the outside and interlocked with the vertical movement of the disk 110, and the spring and the piston connected to the stem 200 through the pressure sensor 600 It consists of valve opening and closing rate measurement displacement sensor (300, 400, 500) to be recognized as an electrical signal and transmitted to the controller.

다음으로 본 발명의 일실시예에 따른 O링에 의해 기밀을 유지하는 실린더 구조를 가지는 밸브개폐율 측정변위센서(300)에 대해서는 도 3에 자세히 도시되어 있다.Next, the valve opening and closing rate measurement displacement sensor 300 having a cylinder structure that maintains airtightness by an O-ring according to an embodiment of the present invention is shown in detail in FIG. 3.

도시된 바와 같이, 스템(200)의 상하 움직임에 따라 압축 또는 팽창하는 스프링(340)이 상기 스템(200)의 상부에 설치되고, 상기 스프링(340)의 상부에는 피스톤(330)이 설치되어 실린더(310)의 내부에 수용되게 된다.
또한, 상기 피스톤(330)과 실린더(310)가 이루는 밀폐된 챔버에는 비압축성유체(320)가 충진되고, 상기 실린더(310)에는 비압축성유체에서 유발되는 압력을 감지하기 위한 압력센서(600)가 구비된다.
상기와 같이 구성된 밸브개폐율 측정변위센서(300)는 스템(200)의 상하 운동에 따라 스프링(340)이 압축 및 팽창하여 발생하는 힘을 피스톤(330)에 의해 실린더(310) 내부의 비압축성유체(320)에 가하여 압력을 발생시키며, 압력센서(600)에서 이를 감지하여 전기적 신호로 콘트롤러(1000)에 전송하게 된다.As shown, a spring 340 that is compressed or expanded in accordance with the vertical movement of the stem 200 is installed on the upper portion of the stem 200, the piston 330 is installed on the upper portion of the spring 340 and the cylinder It is to be accommodated inside the 310.
In addition, an incompressible fluid 320 is filled in the hermetically sealed chamber formed by the piston 330 and the cylinder 310, and the cylinder 310 is provided with a pressure sensor 600 for sensing pressure caused by the incompressible fluid. do.
The valve opening and closing rate measurement displacement sensor 300 configured as described above is a non-compressible fluid in the cylinder 310 by the piston 330 by a force generated by the compression and expansion of the spring 340 according to the vertical movement of the stem 200. The pressure is generated at 320, and the pressure sensor 600 detects the pressure and transmits the pressure to the controller 1000 as an electrical signal.

상기 피스톤(330)의 측면에는 상기 피스톤(330)과 실린더(310)가 이루는 챔버에 충진된 비압축성유체(320)의 기밀을 위하여 O링(331)이 부착된다.
한편, 밸브개폐율 측정용변위센서는 P= a x + p 의 관계를 가지며, 여기서 P 는 임의의 밸브개폐도 a일때의 압축력, a는 밸브가 완전히 닫힌 상태의 디스크 하단에서 현재 위치의 디스크 하단까지의 거리, x 는 스프링 상수, p 는 밸브가 완전히 닫힌 상태의 초기압축력이다.
따라서, 초기 완전 차단상태에서의 압력센서의 신호와 완전 개방 상태에서의 압력센서의 전기적 신호를 수신하여 초기 완전 차단상태에서의 압력센서의 신호를 개폐율 0%에 대응시키고 완전 개방 상태에서의 압력센서의 신호를 개폐율 100%에 대응시키면 검출된 전기적 신호를 간단하게 밸브 개폐율로 환산할 수가 있게 된다.An O-ring 331 is attached to the side surface of the piston 330 for airtightness of the incompressible fluid 320 filled in the chamber formed by the piston 330 and the cylinder 310.
On the other hand, the displacement sensor for measuring the valve opening and closing rate has a relationship of P = ax + p, where P is a compressive force at any valve opening degree a, and a is from the bottom of the disk to the bottom of the disk at the current position with the valve fully closed. Where x is the spring constant and p is the initial compression force with the valve fully closed.
Therefore, by receiving the signal of the pressure sensor in the fully closed state and the electrical signal of the pressure sensor in the fully open state, the signal of the pressure sensor in the completely closed state corresponds to the opening / closing rate of 0% and the pressure in the fully open state. When the signal of the sensor corresponds to the opening and closing rate of 100%, the detected electrical signal can be easily converted into the valve opening and closing rate.

다음으로 본 발명에 따른 다른 일실시예로, 다이어프램에 의해 기밀을 유지하는 실린더 구조를 가지는 밸브개폐율 측정변위센서(400)에 대해서는 도 4에 자세히 도시되어 있다.Next, in another embodiment according to the present invention, the valve opening and closing rate measurement displacement sensor 400 having a cylinder structure to be kept airtight by a diaphragm is shown in detail in FIG. 4.

상기 다이어프램식 밸브개폐율 측정변위센서(400)의 경우, 그 기본적인 작동방식은 앞서 설명한 O링에 의해 기밀을 유지하는 실린더 구조를 가지는 밸브개폐율측정변위센서(300)와 동일하며, 다만 구성면에서 상기 피스톤(430)과 실린더(410)가 이루는 챔버에 충진된 비압축성유체(420)의 기밀을 위하여 다이어프램(431)이 사용되는 점에서만 차이가 있다.
즉, 도시된 바와 같이 스템(200)의 상하 운동에 따라 스프링(440)이 압축 및 팽창하여 발생하는 힘을 피스톤(430)에 의해 실린더(410) 내부, 즉 피스톤(430)과 실린더(410)가 이루는 밀폐된 챔버에 충진된 비압축성유체(420)에 가하여 압력을 발생시키며, 압력센서(600)에서 이를 감지하여 전기적 신호로 콘트롤러(1000)에 전송하게 된다.In the case of the diaphragm-type valve opening and closing measurement displacement sensor 400, the basic operation is the same as the valve opening and closing rate measurement displacement sensor 300 having a cylinder structure to maintain the airtight by the O-ring described above, but in terms of configuration The only difference is that the diaphragm 431 is used for the airtightness of the incompressible fluid 420 filled in the chamber formed by the piston 430 and the cylinder 410.
That is, as illustrated, the force generated by the compression and expansion of the spring 440 according to the vertical movement of the stem 200 is generated by the piston 430 in the cylinder 410, that is, the piston 430 and the cylinder 410. The pressure is applied to the incompressible fluid 420 filled in the hermetically sealed chamber, and the pressure sensor 600 detects it and transmits the electrical signal to the controller 1000.

상기 피스톤(430)의 윗면에는 실린더(410) 내부 비압축성유체(420)의 밀폐를 위하여 다이어프램으로(431)으로 덮혀있고, 볼트(432)로 완전 체결되어 있다.The upper surface of the piston 430 is covered with a diaphragm 431 to seal the incompressible fluid 420 inside the cylinder 410, and is fully fastened with a bolt 432.

다음으로 본 발명에 따른 또 다른 실시예로, 실린더 내에 고탄성재를 채운 구조를 가지는 밸브개폐율 측정변위센서(500)에 대해서는 도 5에 자세히 도시되어 있다.Next, as another embodiment according to the present invention, the valve opening and closing rate measurement displacement sensor 500 having a structure filled with a high elastic material in the cylinder is shown in detail in FIG.

상기 실시예의 경우 앞서 설명한 실시예에서 사용된 비압축성유체(320,420) 대신에 고탄성재(520)를 채운 구조라는 점에서만 차이가 있을 뿐, 작동방식과 그 구성은 앞서 설명한 실시예의 경우와 동일하다.
이 경우 역시, 스템(200)의 상하 운동에 따라 스프링(540)이 압축 및 팽창하여 발생하는 힘을 피스톤(530)에 의해 실린더(510) 내부, 즉 피스톤(430)과 실린더(510)가 이루는 밀폐된 챔버에 충진된 고탄성재(520)에 가하여 압력을 발생시키며, 압력센서(600)에서 이를 감지하여 전기적 신호로 콘트롤러(1000)에 전송하게 된다.In the above embodiment, the difference is only in that the structure is filled with a high elastic material 520 instead of the incompressible fluid (320,420) used in the above-described embodiment, the operation and the configuration is the same as in the above-described embodiment.
In this case, too, the force generated by the compression and expansion of the spring 540 according to the vertical movement of the stem 200 is generated by the piston 530, that is, the piston 430 and the cylinder 510. The high elastic material 520 filled in the sealed chamber is applied to generate pressure, and is sensed by the pressure sensor 600 and transmitted to the controller 1000 as an electrical signal.

이상과 같은 본 발명은 밸브개폐율을 측정하는 변위센서에 관한 것으로, 보다 구체적으로는 밸브의 개폐를 담당하는 디스크의 상하 움직임에 따라 움직이는 스템, 스템의 상하움직임에 따라 압축 및 팽창하는 스프링, 스프링에 연결되어 밀폐된 실린더의 비압축성 유체에 압력을 가하는 피스톤, 실린더와 피스톤의 기밀을 유지하기 위한 O링 또는 다이어프램, 실린더 내 비압축성유체의 압력을 측정하고 전송하는 압력센서로 구성되어 있으며, 밸브의 정량적인 개폐 및 유량제어가 가능하도록 밸브의 개폐율을 정량적인 전기신호로 전송하고자 하는데 기술적 사상이 있음을 알 수 있다.The present invention as described above relates to a displacement sensor for measuring the valve opening and closing rate, more specifically, the stem moving in accordance with the vertical movement of the disk responsible for opening and closing the valve, the spring to compress and expand according to the vertical movement of the stem, spring It consists of a piston which pressurizes the incompressible fluid of a closed cylinder connected to the air, an O-ring or diaphragm for maintaining the airtightness of the cylinder and the piston, and a pressure sensor that measures and transmits the pressure of the incompressible fluid in the cylinder. It can be seen that there is a technical idea to transmit the opening and closing rate of the valve as a quantitative electric signal so that the opening and closing and flow rate control are possible.

그리고 본 발명의 경우 압력변화를 유발하는 매개로 사용되는 비압축성유체는 고탄성재와 균등한 효과를 발휘하는 것으로 해석되어야 할 것이며, 아울러 상기와 같은 기술적 사상의 범주 내에서, 당해 분야의 통상의 지식을 가진 자라면 다양한 많은 변형 및 응용이 가능함은 물론이다.In the case of the present invention, an incompressible fluid used as a medium for inducing pressure changes should be interpreted to have an equivalent effect with a high elastic material, and also within the scope of the technical idea as described above, Those who have a variety of variations and applications are of course possible.

상술한 바와 같이 본 발명에 따른 밸브개폐율 측정변위센서를 이용하면, 밸브를 개폐하는 디스크의 움직임에 따라 상하운동하는 스템을 연결하고, 스템의 상하움직임에 따라 압축 및 팽창하는 스프링의 변위에 의한 힘을 피스톤에 의해 실린더내의 비압축성유체 또는 고탄성재에 전달하여 압력변화를 일으키고, 이를 압력센서에서 감지하여 밸브의 개폐율을 정량적으로 간접 측정할 수 있다. As described above, when the valve opening and closing rate measurement displacement sensor according to the present invention is used, the stem is connected up and down according to the movement of the disk to open and close the valve, and the displacement of the spring is compressed and expanded according to the up and down movement of the stem. The force is transmitted to the incompressible fluid or the high elastic material in the cylinder by the piston to cause a pressure change, and the pressure sensor detects the opening and closing rate of the valve quantitatively.

본 발명의 밸브개폐율 측정변위센서는 P= a x + p 의 관계를 가지며, 여기서 P 는 임의의 밸브개폐도 a일때의 압축력, a는 밸브가 완전히 닫힌 상태의 디스크 하단에서 현재 위치의 디스크 하단까지의 거리, x 는 스프링 상수, p 는 밸브가 완전히 닫힌 상태의 초기압축력이다.Valve opening and closing rate measurement displacement sensor of the present invention has a relationship of P = ax + p, where P is the compression force at any valve opening degree a, a is from the bottom of the disk to the bottom of the disk of the current position with the valve fully closed Where x is the spring constant and p is the initial compression force with the valve fully closed.

따라서, 초기 완전 차단상태에서의 압력센서의 신호와 완전 개방 상태에서의 압력센서의 신호를 수신하여 초기 완전 차단상태에서의 압력센서의 신호를 개폐율 0%에 대응시키고 완전 개방 상태에서의 압력센서의 신호를 개폐율 100%에 대응시키면 검출된 압력신호를 간단하게 밸브 개폐율로 환산할 수 있다.Therefore, by receiving the signal of the pressure sensor in the fully closed state and the signal of the pressure sensor in the fully open state, the signal of the pressure sensor in the completely closed state corresponds to the opening and closing rate of 0%, and the pressure sensor in the fully open state. When the signal corresponding to the opening and closing rate is 100%, the detected pressure signal can be easily converted into the valve opening and closing rate.

위와 같이 만들어진 밸브개폐율 측정변위센서는 그 출력신호를 별도의 디스플레이에 표시할 수도 있으며, 밸브 콘트롤 시스템의 입력 신호로 활용할 수도 있다. 이는 향후 2차측에 공급되는 상수의 압력과 유량을 제어하는데 사용되어 수자원 절약 및 상수도 시스템의 관리에 큰 도움을 줄 수 있을 것이다.The valve opening / closing rate measurement displacement sensor made as described above may display the output signal on a separate display or may be used as an input signal of the valve control system. It will be used to control the pressure and flow rate of the water supply to the secondary side in the future, which can be a great help for water resource saving and management of the water supply system.

Claims (3)

디스크(110)의 승강으로 유로면적이 증감되며, 상기 디스크(110)에 연동되는 밸브 스템(200)이 밸브 외부까지 연장되는 제어밸브에 있어서,      In the control valve in which the flow path area is increased and decreased by the lifting and lowering of the disk 110, and the valve stem 200 linked to the disk 110 extends to the outside of the valve. 상기 스템(200)의 상부에 스프링(340)이 설치되고 상기 스프링(340)의 상부에 피스톤(330)이 설치되어 실린더(310) 내부에 수용되며, The spring 340 is installed on the top of the stem 200 and the piston 330 is installed on the top of the spring 340 is accommodated in the cylinder 310, 상기 피스톤(330)과 실린더(310)가 이루는 챔버에는 비압축성유체(320)가 충진되어 O링(331)에 의해 기밀이 유지되며, The chamber formed by the piston 330 and the cylinder 310 is filled with an incompressible fluid 320 is maintained airtight by the O-ring 331, 상기 실린더(310)에는 비압축성유체(320)에서 유발되는 압력을 감지하기 위한 압력센서(600)가 구비되어, The cylinder 310 is provided with a pressure sensor 600 for detecting the pressure caused by the incompressible fluid 320, 상기 스템(200)의 승강에 따라 상기 비압축성유체(320)의 압력변화를 상기 압력센서(600)를 통해 이를 전기적 신호를 검출하여 밸브의 개폐율을 간접 측정할 수 있는 것을 특징으로 하는 제어밸브용 밸브개폐율 측정변위센서.Control valve, characterized in that the indirect measurement of the opening and closing rate of the valve by detecting the electrical signal of the pressure change of the incompressible fluid 320 through the pressure sensor 600 according to the lifting of the stem 200 Valve open / close rate measurement displacement sensor. 디스크(110)의 승강으로 유로면적이 증감되며, 상기 디스크(110)에 연동되는 밸브 스템(200)이 밸브 외부까지 연장되는 제어밸브에 있어서,In the control valve in which the flow path area is increased and decreased by the lifting and lowering of the disk 110, and the valve stem 200 linked to the disk 110 extends to the outside of the valve. 상기 스템(200)의 상부에 스프링(440)이 설치되고 상기 스프링(440)의 상부에 피스톤(430)이 설치되어 실린더(410) 내부에 수용되며, The spring 440 is installed on the upper portion of the stem 200 and the piston 430 is installed on the upper portion of the spring 440 is accommodated in the cylinder 410, 상기 피스톤(430)과 실린더(410)가 이루는 챔버에는 비압축성유체(420)가 충진되어 다이어프램(431)에 의해 기밀이 유지되며, In the chamber formed by the piston 430 and the cylinder 410 is filled with an incompressible fluid 420 is maintained airtight by the diaphragm 431, 상기 실린더(410)에는 비압축성유체(420)에서 유발되는 압력을 감지하기 위한 압력센서(600)가 구비되어, The cylinder 410 is provided with a pressure sensor 600 for detecting the pressure caused by the incompressible fluid 420, 상기 스템(200)의 승강에 따라 상기 비압축성유체(420)의 압력변화를 상기 압력센서(600)를 통해 이를 전기적 신호를 검출하여 밸브의 개폐율을 간접 측정할 수 있는 것을 특징으로 하는 제어밸브용 밸브개폐율 측정변위센서.Control valve, characterized in that the indirect measurement of the opening and closing rate of the valve by detecting the electrical signal of the pressure change of the incompressible fluid 420 through the pressure sensor 600 according to the lifting of the stem 200 Valve open / close rate measurement displacement sensor. 삭제delete
KR1020070025045A 2007-03-14 2007-03-14 Displacement sensing system of valve opening and shutting rate for control valve KR100757988B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101346362B1 (en) 2012-06-05 2013-12-31 방민규 Valve for He gas control system of electrostatic chuck
KR101559116B1 (en) 2013-08-28 2015-10-13 주식회사 한울글로비스 Heating Apparatus
KR101756869B1 (en) * 2015-12-09 2017-07-11 한전케이피에스 주식회사 System for testing valve and method for testing using the same
KR101785370B1 (en) 2017-07-13 2017-11-06 주식회사 바램 Control valve with measuring module for valve opening rate including zero point compensation function
KR101794717B1 (en) * 2017-03-27 2017-12-01 주식회사 바램 Control valve with measuring module for valve opening rate including zero point compensation function

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6037479A (en) 1983-08-06 1985-02-26 Teikoku Piston Ring Co Ltd Automatic temperature regulating valve
JPS6065981A (en) 1983-09-16 1985-04-15 Toshiba Corp Excess flow check valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6037479A (en) 1983-08-06 1985-02-26 Teikoku Piston Ring Co Ltd Automatic temperature regulating valve
JPS6065981A (en) 1983-09-16 1985-04-15 Toshiba Corp Excess flow check valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101346362B1 (en) 2012-06-05 2013-12-31 방민규 Valve for He gas control system of electrostatic chuck
KR101559116B1 (en) 2013-08-28 2015-10-13 주식회사 한울글로비스 Heating Apparatus
KR101756869B1 (en) * 2015-12-09 2017-07-11 한전케이피에스 주식회사 System for testing valve and method for testing using the same
KR101794717B1 (en) * 2017-03-27 2017-12-01 주식회사 바램 Control valve with measuring module for valve opening rate including zero point compensation function
KR101785370B1 (en) 2017-07-13 2017-11-06 주식회사 바램 Control valve with measuring module for valve opening rate including zero point compensation function

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