KR20150090567A - Integrated valve flow-meter - Google Patents

Integrated valve flow-meter Download PDF

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Publication number
KR20150090567A
KR20150090567A KR1020140011371A KR20140011371A KR20150090567A KR 20150090567 A KR20150090567 A KR 20150090567A KR 1020140011371 A KR1020140011371 A KR 1020140011371A KR 20140011371 A KR20140011371 A KR 20140011371A KR 20150090567 A KR20150090567 A KR 20150090567A
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South Korea
Prior art keywords
valve
pipe
pressure
fluid flow
meter
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KR1020140011371A
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Korean (ko)
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양정승
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주식회사 대한인스트루먼트
양정승
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Priority to KR1020140011371A priority Critical patent/KR20150090567A/en
Publication of KR20150090567A publication Critical patent/KR20150090567A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G01F1/40—Details of construction of the flow constriction devices
    • 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
    • F16K1/16—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 pivoted closure-members
    • F16K1/18—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 pivoted closure-members with pivoted discs or flaps
    • F16K1/22—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 pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • 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
    • F16K15/00—Check valves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

The present invention provides a flow-meter integrated with a valve, which is installed in a fluid flow system (1000) comprising: a pipe (10) wherein a fluid flows; and a valve (80) installed in the pipe (10), wherein pressure in an inlet and an outlet is changed. The flow-meter comprises: pressure taps (31, 32) respectively installed in the front and the rear of the valve (80) in the pipe (10) wherein the valve (80) is installed; and a differential pressure meter (70) connected to the pressure taps (31, 32).

Description

밸브 일체형 유량계{Integrated valve flow-meter}Integrated valve flow-meter < RTI ID = 0.0 >

본 발명은 밸브일체형 유량계에 관한 것으로서 더욱 상세히는 체크밸브 또는 버터플라이밸브와 같은 밸브를 가지는 유체유동시스템에서 본래 상기 유체유동시스템에 설치되는 상기 밸브와 일체가 되어 설치되는 밸브 일체형 유량계에 관한 것이다.The present invention relates to a valve integral type flow meter, and more particularly, to a valve integrated type flow meter installed integrally with the valve installed in the fluid flow system in a fluid flow system having a valve such as a check valve or a butterfly valve.

차압식 유량계는 오리피스 등과 같이 유체가 통과할 때 유속에 따라 그 전후에서 압력차가 발생하는 차압기구를 설치하고 상기 압력차를 이용하여 유량을 측정하는 것을 말한다.The differential pressure type flow meter refers to a differential pressure measuring device, such as an orifice, in which a pressure difference is generated before and after a fluid flows, and measuring the flow rate using the pressure difference.

유체가 유동하는 배관이 제공되고 상기 배관에 유체의 유량을 조절하는 밸브가 설치되는 유체유동시스템(fluid flow system)이 있다. 이러한 유체유동시스템은 플랜트 등에서 유체의 이송을 위하여 사용되거나 또는 이러한 유동시스템에 펌프, 터빈 또는 응축기 등의 기구가 설치되어 유체가 배관을 따라 흐르면서 압력을 높이거나 일을 하거니 냉각 등이 가능하게 된다.There is a fluid flow system in which a pipe through which a fluid flows is provided and a valve for controlling the flow rate of the fluid is installed in the pipe. Such a fluid flow system may be used for transporting fluid in a plant or the like, or a mechanism such as a pump, a turbine or a condenser may be installed in such a flow system so that the fluid flows along the pipe to increase or decrease the pressure, .

이러한 유체유동시스템에 전술한 차압식 유량계를 설치하는 경우 오리피스 등의 차압기구를 설치하고 그 전방과 후방에 직관부를 확보하여야 하며, 이렇게 차압식 유량계를 설치하는 경우 차압기구를 유체가 유동하면서 압력손실 등 에너지의 손실이 발생하는 문제가 있다.When the above-mentioned differential pressure type flow meter is installed in such a fluid flow system, it is necessary to provide a differential pressure mechanism such as an orifice, and to secure a straight pipe section in front of and behind the differential pressure type flow meter. When such a differential pressure type flow meter is installed, There is a problem that energy loss occurs.

만일, 유체유동시스템에서 별도의 직관부를 확보할 필요가 없으며 또한 별도의 차압손실이 발생하지 않으며 본래 그 시스템상 필요한 밸브를 활용하여 유량을 측정할 수 있다면 바람직하다 할 것이다.If a fluid flow system does not need to have a separate straight pipe section and there is no separate pressure loss loss, it would be desirable if the flow rate can be measured using the necessary valves in the system.

예를 들어 펌프장치에서 본래 그 펌프장치에 설치되는 체크밸브를 활용하여 유량을 측정할 수 있다면 바람직하다 할 것이다.For example, it would be desirable to be able to measure the flow rate using a check valve originally installed in the pump device in the pump device.

본 발명은 이러한 요청을 만족시킨다.The present invention satisfies such a request.

본 발명의 목적은 유체유동시스템에서 별도의 직관부를 확보할 필요가 없으며 또한 별도의 차압손실이 발생하지 않고 본래 그 시스템상 필요한 밸브와 일체화되어 유량을 측정하는 밸브 일체형 유량계를 제공하는 것이다.It is an object of the present invention to provide a valve integral type flow meter which does not need to secure a separate straight pipe portion in the fluid flow system and inherently integrates with the required valve in the system without any separate pressure loss,

본 발명은 유체가 유동하는 배관과 상기 배관에 설치된 것으로서 그 입구와 출구에서 압력의 변화를 가지는 밸브를 포함하여 이루어진 유체유동시스템에 설치되는 것으로서, 상기 밸브가 설치된 배관에서 상기 밸브의 전방과 후방에 각각 설치된 압력탭과; 상기 압력탭과 연결된 차압계를 포함하여 이루어진 것을 특징으로 하는 밸브 일체형 유량계를 제공한다.The present invention is provided in a fluid flow system including a pipe through which a fluid flows and a valve installed in the pipe and having a change in pressure at an inlet and an outlet of the pipe, Respectively; And a differential pressure meter connected to the pressure tap.

본 발명에 따를 경우, 상기 유체유동시스템의 밸브가 설치된 배관에서 상기 밸브의 전방과 후방에는 각각 직관부가 형성되어 있는 것이 바람직하다.According to the present invention, it is preferable that straight pipe portions are formed on the front and rear sides of the valve in the piping provided with the valves of the fluid flow system.

본 발명에 따를 경우, 상기 밸브는 체크밸브 또는 버터플라이밸브인 것이 바람직하며, 특별히, 상기 체크밸브는 듀얼 플레이트 체크밸브(dual plate check valve)인 것이 좋다.According to the present invention, it is preferable that the valve is a check valve or a butterfly valve. In particular, the check valve may be a dual plate check valve.

본 발명에 따를 경우, 본래 체크밸브와 같은 밸브를 가지는 유체유동시스템에서 상기 밸브를 이용하여 유량을 측정하게 되는 것이며, 오리피스 등 별도의 차압기구를 설치하여야 하는 문제가 없고, 본래 설치되는 밸브가 직관부를 확보하고 있는 경우, 별도의 직관부를 설치할 필요가 없게 되며, 또한, 오리피스 등 별도의 차압기구를 설치하는 경우 이러한 별도의 차압기구를 유체가 유동하면서 압력손실과 에너지손실이 발생하게 되는데, 본 발명은 본래 유체유동시스템에 설치된 밸브를 활용하는 것으로서 이러한 손실문제가 발생하지 않는 장점을 가진다.According to the present invention, in a fluid flow system having a valve such as a check valve, the flow rate is measured using the valve. There is no problem of installing a separate differential pressure mechanism such as an orifice, It is not necessary to provide a separate straight pipe portion. Further, when a separate pressure difference mechanism such as an orifice is provided, pressure loss and energy loss occur due to the fluid flowing through the separate pressure difference mechanism. Has the advantage that this loss problem does not occur since it utilizes a valve originally installed in the fluid flow system.

도 1은 본 발명에 따른 밸브 일체형 유량계가 설치된 예를 보이는 도면.1 is a view showing an example in which a valve integrated type flow meter according to the present invention is installed.

이제 본 발명의 바람직한 실시예를 첨부한 도면을 참고로 하여 설명한다.DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described with reference to the accompanying drawings.

먼저 유체유동시스템(1000)이 도시되고 있는데, 이것은 유체가 유동하는 배관(10)을 가지고 있으며 상기 배관(10)에는 밸브(80)가 설치되어 있다.First, a fluid flow system 1000 is shown, which has a pipe 10 through which a fluid flows and a valve 80 is installed in the pipe 10.

이러한 유체유동시스템(1000)은 예를 들어 플랜트 등에서 유체를 이송하는 배관시스템일 수 있으며, 다른 경우 응측기 등과 연결되어 냉각 등을 하는 냉각시스템이거나 또는 터빈장치 등과 연결된 터빈시스템 일 수 있다.Such a fluid flow system 1000 may be, for example, a piping system for transporting fluids in a plant or the like, and in other cases, it may be a cooling system connected to an induction device or the like for cooling or the like, or may be a turbine system connected to a turbine device or the like.

본 발명에서 밸브(80)는 유체가 유동하면서 그 전방과 후방에서 압력차이가 발생하는 밸브를 말하는데 체크밸브 또는 버터플라이밸브와 같은 것이 될 수 있다.In the present invention, the valve 80 refers to a valve in which a pressure difference occurs between a front side and a rear side of a fluid, such as a check valve or a butterfly valve.

이들 체크밸브 또는 버터플라이밸브 등은 본 발명자의 실험결과 유출계수 또는 유량계수가 거의 일정한 값을 유지하여 그 압력차이를 통하여 유량을 연산할 수 있는데, 특별히, 듀얼 플레이트 체크밸브(dual plate check valve)가 더욱 이들 계수값이 일정하여 압력값의 차이를 통하여 유량을 연산하기에 적합나다.These check valves, butterfly valves, and the like can be used to calculate the flow rate through the pressure difference by keeping the flow coefficient or the flow rate number almost constant as a result of experiments by the present inventor. Specifically, a dual plate check valve Furthermore, these coefficient values are constant, which is suitable for calculating the flow rate through the difference of the pressure value.

도시된 바와 같이 상기 유체유동시스템(1000)은 펌프(90)를 밸브전단에 가지고 그 후방에 밸브(80)가 설치되고 있다. As shown in the figure, the fluid flow system 1000 has a pump 90 at the front end of the valve and a valve 80 at the back thereof.

상기 유체유동시스템(1000)은 한 예에 불과하며 다양한 유체유동시스템에 본 발명이 적용될 수 있다.The fluid flow system 1000 is only one example and the present invention can be applied to various fluid flow systems.

본 발명에 따를 경우, 상기 밸브(80)는 상기 유체유동시스템(1000)에서 본래 필요한 것이다.According to the present invention, the valve 80 is inherently necessary in the fluid flow system 1000.

이와 같이 유체가 유동하는 배관(10)과 상기 배관(10)에 설치된 밸브(80)를 가지는 유체유동시스템(1000)에 대하여, 본 발명에 따를 경우, 상기 밸브(80)가 설치된 배관(10)에서 상기 밸브(80)의 전방과 후방에는 각각 압력탭(31)(32)이 설치된다.According to the present invention, in the fluid flow system 1000 having the pipe 10 in which the fluid flows and the valve 80 installed in the pipe 10, the pipe 10 provided with the valve 80, Pressure taps 31 and 32 are provided at the front and rear of the valve 80, respectively.

또한 상기 압력탭(31)(32)은 차압계(differential pressure gauge)(70)와 연결되며, 이에 따라 차압계(70)는 상기 압력탭(31)(32)을 통하여 상기 밸브(80)의 전방과 후방의 압력값의 차이를 연산하여 유량을 산출하여 보여주게 된다.The pressure taps 31 and 32 are connected to a differential pressure gauge 70 so that the differential pressure gauge 70 is connected to the front of the valve 80 through the pressure tap 31 and 32, The flow rate is calculated by calculating the difference of the pressure value of the rear side.

본 발명에 따를 경우, 상기 밸브(80)의 전방과 후방에는 직관부가 형성되는 것이 바람직하다. 즉 유체유동시스템(1000)의 배관(10)에서 밸브(80)의 배치 상 이미 직관부를 가지는 밸브(80)에 대하여 그 전방과 후방에 압력탭(31)(32)을 설치하고 이들에 대하여 차압계(70)를 연결하게 되는 것이다.According to the present invention, it is preferable that straight tubes are formed at the front and rear of the valve 80. Pressure taps 31 and 32 are provided at the front and rear of the valve 80 having the straight pipe portion in the arrangement of the valve 80 in the piping 10 of the fluid flow system 1000, (70).

이와 같은 본 발명에 따를 경우, 본래 체크밸브와 같은 밸브(80)를 가지는 유체유동시스템(1000)에서 상기 밸브(80)를 이용하여 유량을 측정하게 되는 것이다. 따라서 아래와 같은 장점을 가지게 된다.According to the present invention, the flow rate is measured using the valve 80 in a fluid flow system 1000 having a valve 80 such as a check valve. Therefore, it has the following advantages.

첫째, 오리피스 등 별도의 차압기구를 설치하여야 하는 문제가 없다.First, there is no problem that an additional differential pressure mechanism such as an orifice should be installed.

둘째, 본래 설치되는 유량계가 직관부를 확보하고 있어야 하므로, 별도의 직관부를 설치할 필요가 없다.Secondly, since the flow meter installed originally has to secure the straight pipe portion, it is not necessary to provide a separate straight pipe portion.

셋째, 오리피스 등 별도의 차압기구를 설치하는 경우 이러한 별도의 차압기구를 유체가 유동하면서 압력손실과 에너지손실이 발생하게 되는데, 본 발명은 본래 유체유동시스템에 설치된 밸브를 활용하는 것으로서 이러한 손실문제가 발생하지 않는다.Third, when a separate differential pressure mechanism such as an orifice is installed, pressure loss and energy loss occur due to fluid flow through the separate differential pressure mechanism. The present invention utilizes a valve installed in a fluid flow system. Does not occur.

이와 같이 본 발명은 유체유동시스템에서 별도의 직관부를 확보할 필요가 없으며 또한 별도의 차압손실이 발생하지 않고 본래 그 시스템상 필요한 밸브를 활용하여 유량을 측정하는 밸브 일체형 유량계를 제공한다.Thus, the present invention provides a valve integral type flow meter which does not need to secure a separate straight pipe portion in the fluid flow system, and which measures the flow rate by utilizing the necessary valve in the system in its original state without generating any differential pressure loss.

한편 본 발명을 활용할 경우, 밸브의 개방정도나 개폐여부를 확인할 수 있는 장점을 가진다. 즉 유체유동시스템에 설치된 체크밸브 등의 경우, 외부에서 그 개방정도 또는 개폐유무 등을 알 수 가 없는데, 이러한 체크밸브를 활용하여 본 발명에 따른 밸브 일체형 유량계를 제공할 경우, 유량계의 수치와 밸브의 차압을 비교하여 밸브의 유동저항을 산출할 수 있으며 이를 이용하여 체크밸브의 개방정도 또는 개폐여부 등을 확인할 수 있게 된다.On the other hand, when the present invention is utilized, it is possible to confirm whether the valve is open or closed. That is, in the case of a check valve installed in a fluid flow system, it is not known whether the valve is open or closed from the outside. When such a check valve is used to provide a valve integrated type flow meter according to the present invention, The flow resistance of the valve can be calculated by comparing the differential pressure of the check valve.

1000: 유체유동시스템
10: 배관
80: 밸브
70: 차압계
31, 32: 압력탭1000: Fluid flow system
10: Piping
80: Valve
70: Differential pressure gauge
31, 32: pressure tap

Claims (4)

유체가 유동하는 배관과 상기 배관에 설치된 것으로서 그 입구와 출구에서 압력의 변화를 가지는 밸브를 포함하여 이루어진 유체유동시스템에 설치되는 것으로서,
(a) 상기 밸브가 설치된 배관에서 상기 밸브의 전방과 후방에 각각 설치된 압력탭과;
(b) 상기 압력탭과 연결된 차압계를 포함하여 이루어진 것을 특징으로 하는 밸브 일체형 유량계.And a valve installed in the pipe, the valve having a change in pressure at an inlet and an outlet of the pipe,
(a) a pressure tap provided at the front and the rear of the valve in a pipe provided with the valve;
(b) a differential pressure gauge connected to the pressure tap. 제1항에 있어서,
상기 유체유동시스템의 밸브가 설치된 배관에서 상기 밸브의 전방과 후방에는 각각 직관부가 형성되어 있는 것을 특징으로 하는 밸브 일체형 유량계.The method according to claim 1,
Wherein a straight pipe portion is formed in each of the front and rear sides of the valve in the pipe in which the valve of the fluid flow system is installed. 제1항 또는 제2항에 있어서,
상기 밸브는 체크밸브 또는 버터플라이밸브인 것을 특징으로 하는 밸브 일체형 유량계.3. The method according to claim 1 or 2,
Wherein the valve is a check valve or a butterfly valve. 제3항에 있어서,
상기 밸브는 듀얼 플레이트 체크밸브(dual plate check valve)인 것을 특징으로 하는 밸브 일체형 유량계.The method of claim 3,
Wherein the valve is a dual plate check valve.
KR1020140011371A 2014-01-29 2014-01-29 Integrated valve flow-meter KR20150090567A (en)

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