KR100308252B1 - Electronic bellows type pressure fluid tank flowmeter - Google Patents

Electronic bellows type pressure fluid tank flowmeter Download PDF

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Publication number
KR100308252B1
KR100308252B1 KR1019980017791A KR19980017791A KR100308252B1 KR 100308252 B1 KR100308252 B1 KR 100308252B1 KR 1019980017791 A KR1019980017791 A KR 1019980017791A KR 19980017791 A KR19980017791 A KR 19980017791A KR 100308252 B1 KR100308252 B1 KR 100308252B1
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South Korea
Prior art keywords
bellows
flowmeter
type pressure
flow rate
electronic
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KR1019980017791A
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Korean (ko)
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KR19990085394A (en
Inventor
전승익
이수길
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권문구
엘지전선 주식회사
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Priority to KR1019980017791A priority Critical patent/KR100308252B1/en
Publication of KR19990085394A publication Critical patent/KR19990085394A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/56Measuring 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 electric or magnetic effects
    • G01F1/58Measuring 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 electric or magnetic effects by electromagnetic flowmeters
    • G01F1/60Circuits therefor
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/06Indicating or recording devices
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/16Diaphragms; Bellows; Mountings therefor

Abstract

PURPOSE: An electronic bellows type pressure fluid tank flowmeter is provided to make users easily read a flowmeter by forming a large LED(Light Emitting Diode) indicator. CONSTITUTION: A far infrared ray sensor(15) formed in an outer case cover(19) irradiates far infrared ray(21) and senses the movement of an upper plate of a bellows(18). A signal cable(16) is installed to transfer sensed signal to a control box(14). An electronic flowmeter(17) indicates a flow rate converted by the signal of the far infrared ray sensor. A control box includes an A/D(Analog to Digital) converter, a one-chip microprocessor having the function of a watch dog, an LED display device and a chargeable power supply unit.

Description

원격 감시용 전자식 벨로우즈형 압력유조 유량계Electronic Bellows Pressure Tank Flowmeter for Remote Monitoring

본 발명은 OF 케이블 전력계통의 유량변화를 흡수하는 장치인 BPT의 유량계를 기계적 장치의 의존방식에서 전자식으로 개량하여 모든 규격의 유량계에 설치가 가능하고 원격 감시가 가능하도록 하는 장치에 관한 것이다. 종래의 BPT용 유량계는 절연유의 주입과 배유에 따라서 벨로우즈가 수직으로 운동하는 것을 기계적으로연결하여 회전운동으로 변환, 게이지 패널로 표시하는 방법을 이용하였으나, 유량계의 조립이 번거럽고 BPT의 유량에 따라서 감속비를 설정하기 때문에 각각의 유량에 대한 제품을 제각각 제작해야 하고, 감속기어의 회전비를 맞추기 쉽지 아니하며 내구성에 한계가 있고, 원격 감시에 어려움이 있다.The present invention relates to a device that can be installed in any standard flowmeter and remote monitoring by improving the electronic flow of the BPT, a device that absorbs the change in the flow rate of the OF cable power system electronically from the dependence of the mechanical device. Conventional BPT flowmeters use a method of mechanically connecting the bellows to move vertically according to the injection and drainage of insulating oil, converting them into rotational movements, and displaying them with a gauge panel. Since the reduction ratio is set, each product must be manufactured for each flow rate, and it is not easy to adjust the rotation ratio of the reduction gear, there is a limit in durability, and there is a difficulty in remote monitoring.

상기한 바와 같은 문제 점들을 개선하기 위하여, 벨로우즈의 상하 운동은 유량에 따라 변하는 것이므로 유량의 변화를 감지하기 위해서는 벨로우즈의 상하운동을 센서에 의해서 감지하고 유량으로 환산하여 콘트롤박스에서 LED표시장치를 이용하여 원거리에서 조망이 가능하여 원격 감시가 용이한 유량계를 제공하는데 발명의 목적이 있다.In order to solve the above problems, the vertical movement of the bellows is changed according to the flow rate, so in order to detect the change in the flow rate, the vertical movement of the bellows is detected by the sensor and converted into the flow rate to use the LED display device in the control box. It is an object of the present invention to provide a flow meter that can be viewed from a long distance to facilitate remote monitoring.

상기와 같은 목적을 달성하기 위하여 외함과 내함으로 구분되어 형성된 벨로우즈 외함의 상층부인 덮개 내측에 적외선 감지센서의 감지방향을 아래로 향하게 형성하고 벨로우즈 상하 운동의 위치를 감지한다. 벨로우즈는 유량의 변화에 따라 BPT의 규격유량 까지 수직으로 상하 운동하게 형성하고 덮개 내부에 형성된 위치센서에서 측정한 측정치를 콘트롤박스에 전달하기 위해서 상기 센서와 콘트롤박스를 연결하는 신호선은 방수로 형성한 케이블로 사용함이 바람직하다. 벨로우즈의 위치 센서에 측정된 상하 운동의 위치의 신호를 콘트롤박스에서 프로그램된 데이터에 따라 유량으로 환산하여 자동으로 표시판의 레드(LED)표시 장치에 숫자로 나타나게 하며, 대형으로 표시되는 것이 바람직하다. 또한 유량이 상한치 이상이 되거나 하한치 이하가 되면 경보신호가 발생할 수 있도록 경보장치를 형성하고 그 경보를 원격 감시 장치에 표시 되도록 구성하도록 하고 중앙통제실에서도 통제가 가능하도록 한다.In order to achieve the above object, the detection direction of the infrared sensor is formed downward inside the cover, which is an upper layer of the bellows enclosure formed by dividing the enclosure and the enclosure, and detects the position of the bellows vertical movement. The bellows is vertically moved up and down to the standard flow rate of the BPT according to the change of the flow rate, and the signal line connecting the sensor and the control box to the control box to transmit the measured value measured by the position sensor formed inside the cover is a waterproof cable. It is preferable to use as. It is preferable to convert the signal of the position of the vertical motion measured by the position sensor of the bellows into the flow rate according to the data programmed in the control box so that it automatically appears as a number on the red (LED) display device of the display panel and displayed in large size. In addition, when the flow rate is above the upper limit or below the lower limit, an alarm device is formed to generate an alarm signal, and the alarm is configured to be displayed on the remote monitoring device, and the central control room can be controlled.

도 1은 종래의 기계식 유량계를 사용한 압력유조.1 is a pressure tank using a conventional mechanical flow meter.

도 2는 개량된 전자식 유량계를 사용한 압력유조.2 is a pressure tank using an improved electronic flow meter.

***도면의주요부분에대한부호의설명****** Explanation of symbols on the main parts of the drawings ***

11 : 연결선 12 : 변환기어11: connecting line 12: transducer

13 : 기계식 유량계 14 : 콘트롤박스13: mechanical flow meter 14: control box

15 : 적외선 센서 16 : 케이블15 infrared sensor 16 cable

17 : 전자식 유량계 18 : 벨로우즈17 electronic flow meter 18 bellows

19 : 덮개 20 : 상판19: cover 20: top plate

21 : 적외선21: infrared

이하, 첨부된 도면과 실시 예를 참고하여 본 발명에 대해서 상세히 설명하고자 한다.Hereinafter, with reference to the accompanying drawings and embodiments will be described in detail with respect to the present invention.

종래의 벨로우즈(18)형 유조의 유량 표시는 기계적 장치의 계기 표시 장치로서 상기한 바와 같은 여러가지의 문제 점이 지적된 바있다. 그 예로 절연유의 방출과 유입에 따라 벨로우즈(18)의 높이가 변하므로 그 변하는 수직운동을 연결선(11)에 의하여 계기판에 연계된 회전운동 변환기어(12)를 회전하게 하고 변환기어(12)에 연계된 게이지 패널로 표시되도록 되어 있다. 상기와 같은 구성은 연계되는 구성이 기어에 의하므로 오차가 발생하게 되어 게이지의 정확성을 구하기 어려운 구성으로 형성되어 있다. 본 발명은 상기와 같은 구성의 문제점을 고려한 것으로, 벨로우즈(18)의 상하운동을 감지하기 위하여 외함의 덮개(19) 내부면에 형성된 적외선 센서(15)와 상기 센서(15)의 신호를 전달하는 방수가 되는 케이블(16)과 A/D 콘버터, 워치도그(WATCH DOG)를 내장한 원칩 마이크로 프로세서, LED표시장치로 형성되는 전자식유량계(17)와 충전식 전원부로 구성된 콘트롤박스(14)로 구성되는 것을 본 발명의 특징으로 한다.The flow rate display of the conventional bellows 18 type oil tank has been pointed out of various problems as described above as an instrument display device of a mechanical device. For example, the height of the bellows 18 changes according to the discharge and inflow of the insulating oil, so that the vertical movement of the bellows 18 is rotated by the connecting line 11 to rotate the rotary motion converter gear 12 connected to the instrument panel. It is displayed as an associated gauge panel. The configuration as described above is formed in a configuration that is difficult to obtain the accuracy of the gauge because the error is generated because the configuration is linked to the gear. The present invention considers the problems of the above configuration, in order to detect the vertical movement of the bellows 18 to transmit the signal of the infrared sensor 15 and the sensor 15 formed on the inner surface of the cover 19 of the enclosure It consists of a waterproof box (16), an A / D converter, a one-chip microprocessor with a built-in watchdog, an electronic flowmeter (17) formed of an LED display device, and a control box (14) consisting of a rechargeable power supply unit. It is a feature of the present invention.

벨로우즈(18)형 압력유조의 유량계에서 본 발명의 유량계(17)는 종래의 유량계(13)에 이용되던 구성을 해체하고 유조의 외함 덮개(19) 내부면에 적외선(21)을 조사할 수 있는 적외선 센서(15)를 형성하여 유조의 내함 일측에 형성되어 유량의유출과 유입에 따라 움직이는 벨로우즈(18) 상판(20)의 상하운동을 감지하도록 하고, 그 감지한 신호를 콘트롤박스(14)에 전달하는 신호 케이블(16)를 형성한다. 상기 콘트롤박스(14)는 신호를 받아 드리는 A/D 콘버터, 워치 도그(WATCH DOG) 기능을 내장한 원칩 마이크로 프로세서와 LED표시 장치와 충전 전원부를 구성하여 형성된다. 상기 원칩 마이크로 프로세서의 장치는 벨로우즈(18)의 상하운동을 감지하는 적외선 센서(15)의 신호를 프로그램된 데이터를 수치로 환산하여 숫자로 표시하도록 하는 장치이며 충전 전원부의 구성은 일정량의 전원을 충전하고 단전에 대비하여 일정 시간동안 전력공급없이 가동할 수 있도록 형성된 것이다. 또한 LED표시판을 대형 화하여 원거리에서도 감시가 용이하도록 한다.In the flow meter of the bellows 18 type pressure tank, the flow meter 17 of the present invention can disassemble the structure used in the conventional flow meter 13 and irradiate infrared rays 21 to the inner surface of the oil tank enclosure 19. The infrared sensor 15 is formed to detect vertical movement of the bellows 18 and the upper plate 20 which are formed at one side of the oil container in the oil tank and move according to the outflow and inflow of the flow rate, and the detected signal is transmitted to the control box 14. Form a signal cable 16 for transmission. The control box 14 is formed by configuring an A / D converter that receives a signal, a one-chip microprocessor with a watch dog function, an LED display device, and a charging power supply unit. The device of the one-chip microprocessor is a device for converting the signal of the infrared sensor 15 that detects the vertical movement of the bellows 18 into numerical values by converting the programmed data into numerical values, and the configuration of the charging power supply unit charges a certain amount of power. And it is formed so that it can operate without power supply for a certain time in preparation for power failure. In addition, the LED display panel is enlarged to make it easy to monitor from a long distance.

종래의 벨로우즈용 유량계는 구성이 복잡하여 조립이 쉬지 않으며 유량에 따라 감속비를 설정하기 때문에 유량에 따라 유량계를 제작해야 하는 어려움이 있고 직선운동을 회전운동으로 변환하고 감속기등을 이용하여 게이지를 작동케 함으로 오차의 범위가 크게 나타나는등 문제 점이 있어 왔으나, 본 발명에 의한 유량계는 함내의 변화되는 상황을 적외선 센서의 감지에 의한 신호를 프로그램된 데이터에 의해 환산하여 LED판에 표시하는 것이므로 대체적으로 그 수치가 정확하여 예측 가능한 범위에서 유조의 관리를 할 수 있는 것이다.Conventional bellows flowmeter is not easy to assemble due to the complicated configuration, and it is difficult to manufacture the flowmeter according to the flow rate because it sets the reduction ratio according to the flow rate, and converts the linear motion into the rotational motion and operates the gauge using the reducer. There has been a problem, such as a large range of error, but the flow meter according to the present invention is to convert the situation of the inside of the vessel to the signal by detecting the infrared sensor by the programmed data to display on the LED plate as a rule, the numerical value It is precisely possible to manage the tank in the foreseeable range.

Claims (1)

벨로우즈형 압력 유조의 유량계에 있어서, 외함 덮개(19) 내부면에 형성되고 벨로우즈(18)의 상판(20)에 적외선(21)을 조사하여 상판(20)의 상. 하 운동에 의한 거리에 따라 적외선(21)이 반사되는 시간의 변화를 거리로 환산하는 원리로 작동되는 적외선 센서(15)와 적외선 센서(15)의 신호에 의해 유량으로 환산되어 그 수치가 숫자로 표시되는 전자유량계(17)의 콘트롤박스(14)로 이루어짐을 특징으로 하는 원격 감시용 전자식 벨로우즈형 압력유조 유량계.A flowmeter of a bellows-type pressure tank, which is formed on an inner surface of an enclosure lid (19) and irradiates infrared rays (21) to the upper plate (20) of the bellows (18). The flow rate is converted into a flow rate by the signals of the infrared sensor 15 and the infrared sensor 15 which operate on the principle of converting the change in the time of reflecting the infrared ray 21 into the distance according to the distance caused by the lower motion. An electronic bellows type pressure tank flow meter for remote monitoring, characterized in that it consists of a control box 14 of the displayed electromagnetic flow meter 17.
KR1019980017791A 1998-05-18 1998-05-18 Electronic bellows type pressure fluid tank flowmeter KR100308252B1 (en)

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KR1019980017791A KR100308252B1 (en) 1998-05-18 1998-05-18 Electronic bellows type pressure fluid tank flowmeter

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KR100308252B1 true KR100308252B1 (en) 2002-02-19

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