KR20050036923A - A proportional control valve system - Google Patents
A proportional control valve system Download PDFInfo
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- KR20050036923A KR20050036923A KR1020050018528A KR20050018528A KR20050036923A KR 20050036923 A KR20050036923 A KR 20050036923A KR 1020050018528 A KR1020050018528 A KR 1020050018528A KR 20050018528 A KR20050018528 A KR 20050018528A KR 20050036923 A KR20050036923 A KR 20050036923A
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- ball valve
- opening
- value
- valve
- motor
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Classifications
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
- F16K31/043—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
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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
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
Abstract
본 발명은 전동 볼밸브의 비례제어 시스템에 관한 것으로, 더욱 상세하게는 현재의 밸브 개폐량인 현재값을 목표값인 기준값과 비교하여 현재값을 기준값에 일치시켜 정밀제어할 수 있도록, 밸브와 스퍼기어로 연결되어 1:1로 회전하는 포텐션미터와, 목표 개폐량인 기준값을 설정하고 밸브의 현재 개폐량인 현재값을 검출하며 상기 기준값과 현재값을 비교하고 그 값이 일치되도록 밸브의 개폐량을 조절하는 제어기를 포함한 전동 볼밸브의 비례제어 시스템에 관한 것이다.The present invention relates to a proportional control system of an electric ball valve, and more particularly, a valve and a spur to precisely control the present value to match the reference value by comparing the present value, which is the current valve opening and closing amount, with a reference value, which is a target value. A potentiometer that is connected by gear and rotates 1: 1 and sets the reference value that is the target opening / closing amount, detects the current value that is the current opening / closing amount of the valve, compares the reference value with the present value, and opens and closes the valve to match the value. It relates to a proportional control system of an electric ball valve including a controller for adjusting the amount.
본 발명에 따르면, 유량을 제어하는 볼밸브와, 정역에 의해 볼밸브를 개폐하는 DC모터와, 볼밸브의 구동축과 DC모터의 출력축에 연결되어 DC모터를 볼밸브의 개방속도에 맞게 감속하는 기어박스로 구성된 전동 볼밸브의 제어 시스템에 있어서, 상기 기어박스의 출력축과 볼밸브의 구동축의 사이에 스퍼기어가 설치되고, 상기 스퍼기어에 치합된 동일 잇수의 스퍼기어의 축에 볼밸브의 현재 개폐량인 현재값을 검출하는 포텐션미터가 설치되며, 볼밸브의 목표 개폐량인 기준값을 설정하고 현재 볼밸브의 개폐량인 현재값을 비교하여 볼밸브의 개폐량을 조정하는 제어기를 포함하여 구성된 전동 볼밸브의 비례제어 시스템이 제공된다.According to the present invention, the ball valve for controlling the flow rate, the DC motor for opening and closing the ball valve by the normal and reverse, the gear connected to the drive shaft of the ball valve and the output shaft of the DC motor to reduce the DC motor to the opening speed of the ball valve In the control system of a motorized ball valve composed of a box, a spur gear is installed between the output shaft of the gearbox and the drive shaft of the ball valve, and the ball valve is currently opened and closed on the shaft of the same number of spur gears engaged with the spur gear. A potentiometer is provided for detecting the present value, which is an amount, and includes a controller for setting the reference value, which is the target opening / closing amount of the ball valve, and comparing the present value, which is the opening / closing amount of the current ball valve, to adjust the opening and closing amount of the ball valve. A proportional control system of the electric ball valve is provided.
Description
본 발명은 전동 볼밸브의 비례제어 시스템에 관한 것으로, 더욱 상세하게는 현재의 밸브 개폐량인 현재값을 목표값인 기준값과 비교하여 현재값을 기준값에 일치시켜 정밀제어할 수 있도록, 밸브와 스퍼기어로 연결되어 1:1로 회전하는 포텐션미터와, 목표 개폐량인 기준값을 설정하고 밸브의 현재 개폐량인 현재값을 검출하며 상기 기준값과 현재값을 비교하고 그 값이 일치되도록 밸브의 개폐량을 조절하는 제어기를 포함한 전동 볼밸브의 비례제어 시스템에 관한 것이다.The present invention relates to a proportional control system of an electric ball valve, and more particularly, a valve and a spur to precisely control the present value to match the reference value by comparing the present value, which is the current valve opening and closing amount, with a reference value, which is a target value. A potentiometer that is connected by gear and rotates 1: 1 and sets the reference value that is the target opening / closing amount, detects the current value that is the current opening / closing amount of the valve, compares the reference value with the present value, and opens and closes the valve to match the value. It relates to a proportional control system of an electric ball valve including a controller for adjusting the amount.
종래의 전동 볼밸브는 on/off식이고, 이는 DC모터, 기어박스, 볼밸브, 리밋스위치 등으로 구성되어, 모터의 주전원 극성이 바꾸어 밸브가 개폐되면서 리밋스위치에 의해 정지되는 구조를 가진다.Conventional electric ball valve is on / off type, it is composed of a DC motor, gearbox, ball valve, limit switch, etc., the main power supply polarity of the motor is changed to have a structure that is stopped by the limit switch opening and closing the valve.
그러나 종래의 밸브는 유체의 흐름을 on/off식으로 단속하는 것만이 가능할 뿐이고, 목표 흐름량을 설정하고 이와 비교하여 일정량씩 정밀하게 제어하는 것이 불가능한 문제점이 있었으며, on/off의 단속적인 개폐에 의한 기계적인 소음이 과다하고 전기적인 결함이 발생하는 문제점이 있었다.However, the conventional valve is only possible to control the flow of the fluid on / off, and there is a problem that it is impossible to set the target flow amount and to precisely control by a certain amount compared to this, and by the intermittent opening and closing of the on / off There is a problem that excessive mechanical noise and electrical defects occur.
본 발명의 목적은 전동 볼밸브를 일정량씩 정밀제어할 수 있도록 함에 있고, 이를 위해 기준값과 현재 개폐량을 비교하여 볼밸브를 조정하는 제어기와, 밸브의 개폐량을 검출하는 포텐션미터 등을 구비한 전동 볼밸브의 비례제어 시스템을 제공함에 있다.An object of the present invention to precisely control the electric ball valve by a predetermined amount, for this purpose is provided with a controller for adjusting the ball valve by comparing the reference value and the current opening and closing amount, a potentiometer for detecting the opening and closing amount of the valve, etc. A proportional control system of an electric ball valve is provided.
이하 본 발명의 구성 및 작용을 첨부 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.
유량을 제어하는 볼밸브(1)와, 정역에 의해 볼밸브(1)를 개폐하는 DC모터(2)와, 볼밸브(1)의 구동축(3)과 DC모터(2)의 출력축에 연결되어 DC모터(2)를 볼밸브(1)의 개방속도에 맞게 감속하는 기어박스(4)로 구성된 전동 볼밸브의 제어 시스템에 있어서, 상기 기어박스(4)의 출력축과 볼밸브(1)의 구동축(3)의 사이에 스퍼기어(5a)가 설치되고, 상기 스퍼기어(5a)에 치합된 동일 잇수의 스퍼기어(5b)의 축에 볼밸브(1)의 현재 개폐량인 현재값을 검출하는 포텐션미터(6)가 설치되며, 볼밸브(1)의 목표 개폐량인 기준값을 설정하고 현재 볼밸브(1)의 개폐량인 현재값을 비교하여 볼밸브(1)의 현재값을 기준값과 일치하도록 DC모터(2)를 조정하는 제어기(7)를 포함하여 구성됨을 특징으로 한다.It is connected to the ball valve (1) for controlling the flow rate, the DC motor (2) for opening and closing the ball valve (1) by the stationary region, the drive shaft (3) of the ball valve (1) and the output shaft of the DC motor (2) In the control system of the electric ball valve consisting of a gear box (4) for decelerating the DC motor (2) to the opening speed of the ball valve (1), the output shaft of the gear box (4) and the drive shaft of the ball valve (1) The spur gear 5a is provided between (3), and the present value which is a current opening / closing amount of the ball valve 1 is detected in the shaft of the same number of spur gears 5b engaged with the spur gear 5a. A potentiometer 6 is provided, and sets the reference value which is the target opening / closing amount of the ball valve 1, compares the present value which is the opening / closing amount of the current ball valve 1, and compares the present value of the ball valve 1 with the reference value. And a controller 7 for adjusting the DC motor 2 to coincide.
그리고 상기 스퍼기어(5a)에는 볼밸브(1)의 완전닫힘과 완전열림을 알려주는 두개의 표시돌기(8)가 돌설되고, 상기 표시돌기(8)들은 육안으로 관찰되어 볼밸브(1)의 열림 정도가 파악될 수 있게 된다.In addition, the spur gear 5a is provided with two display protrusions 8 which indicate the complete closing and the full opening of the ball valve 1, and the display protrusions 8 are visually observed so that the ball valve 1 The degree of opening can be grasped.
또한 상기의 기준값과 현재값 및 운전상태 등을 시각적으로 표시하는 모니터를 부가할 수도 있다.In addition, a monitor for visually displaying the reference value, the present value, and the driving state may be added.
이와 같이 구성된 본 발명은 제어기(7)에 의해 기준값이 입력되고, 포텐션미터(6)에 의해 볼밸브(1)의 현재 개폐량인 현재값이 검출되며, 제어기(7)에서 기준값과 현재값을 비교하여 볼밸브(1)의 개폐량을 항상 기준값에 맞도록 제어하는 특징을 가진다.In the present invention configured as described above, the reference value is input by the controller 7, the current value which is the current opening / closing amount of the ball valve 1 is detected by the potentiometer 6, and the reference value and the current value are detected by the controller 7. Compared to the control has the feature to control the opening and closing amount of the ball valve 1 to always meet the reference value.
정밀한 유량의 제어가 필요한 경우에 본 발명은 제어기(7)에 의해 제어하고자 하는 정량의 유량인 기준값을 설정하게 된다. 기준값이 아날로그 값으로 입력될 경우는 AD컨버터에 의해 디지털 값으로 바뀌고, 내부프로그램에 의해 디지털 값은 0~100%의 백분율로 변환되어 내부메모리에 저장된다. 이와 같이 제어기(7)는 AD컨버터와, 내부프로그램이 설치된 프로그렘어블 로직 콘트롤러(programmable logic controller) 및 내부메모리를 포함한 구성을 가지는 범용콘트롤러이다. 백분율 0~100%는 볼밸브(1)의 완전닫힘과 완전개방의 비율을 의미한다.When precise flow rate control is required, the present invention sets a reference value which is the flow rate of the quantity to be controlled by the controller 7. When the reference value is entered as an analog value, it is converted into a digital value by the AD converter, and the digital value is converted into a percentage of 0 ~ 100% by the internal program and stored in the internal memory. As such, the controller 7 is a general-purpose controller having a configuration including an AD converter, a programmable logic controller equipped with an internal program, and an internal memory. The percentage of 0 to 100% means the ratio of the complete closing and opening of the ball valve (1).
제어기(7)의 내부메모리에 제어하고자 하는 기준값이 입력되면, 실제 볼밸브(1)의 개폐량인 현재값을 측정하여 기준값과 비교하게 된다.When the reference value to be controlled is input to the internal memory of the controller 7, the present value, which is the actual opening / closing amount of the ball valve 1, is measured and compared with the reference value.
볼밸브(1)의 현재값은 포텐션미터(6)에 의해 검출되는데, 포텐션미터(6)는 밸브의 열림 즉 볼밸브(1)의 구동축(3)과 동일하게 움직이는데, 이는 구동축(3)과 1:1의 잇수비를 가진 한쌍의 스퍼기어(5a)(5b)에 의해 달성된다.The current value of the ball valve 1 is detected by the potentiometer 6, which moves in the same way as the opening of the valve, ie the drive shaft 3 of the ball valve 1, which is driven by the drive shaft 3 ) And a pair of spur gears 5a and 5b having a tooth ratio of 1: 1.
즉, 볼밸브(1)는 초기에 표시돌기(8)에 의해 완전닫힘과 완전열림의 위치로 설정되고, 구동축(3)이 회전함에 따라 스퍼기어(5a)(5b)의 1:1 물림에 의해 포텐션미터(6)도 동일하게 회전되게 되며, 포텐션미터(6)의 회전량 즉 볼밸브(1)의 현재 열림량인 현재값이 1~5V 범위의 전압으로 제어기(7)로 입력된다. 이의 아날로그 전압값은 AD컨버터에 의해 디지털 값으로 바뀌고 내부프로그램에 의해 디지털 값이 0~100%의 백분율로 변환된다. 이 때의 백분율도 볼밸브(1)의 완전담힘과 완전열림을 각각 0%와 100%로 하여 그 비율을 나타낸 것이다.That is, the ball valve 1 is initially set to the position of fully closed and fully open by the display projection 8, and as the drive shaft 3 rotates, the ball valve 1 is in a 1: 1 bite of the spur gears 5a and 5b. As a result, the potentiometer 6 is rotated in the same manner, and the current amount, which is the rotation amount of the potentiometer 6, that is, the current opening amount of the ball valve 1, is input to the controller 7 with a voltage in the range of 1 to 5V. do. Its analog voltage value is converted to digital value by AD converter and digital value is converted into percentage of 0 ~ 100% by internal program. The percentage at this time also represents the ratio of 0% and 100% of the complete filling and the full opening of the ball valve 1, respectively.
상기에서와 같이, 목표로 하는 개구량인 기준값의 백분율과, 현재 실제로 열려 있는 볼밸브(1)의 개구량인 현재값의 백분율이 제어기(7)에서 비교연산되고, 현재값이 기준값보다 작은 경우는 제어기(7)가 DC모터(2)를 더 회전시키게 되고, 이에 따라 실시간으로 포텐션미터(6)는 볼밸브(1)의 현재값을 다시 검출하여 상기와 같은 비교연산의 과정을 반복하게 된다. 따라서 기준값과 현재값이 일치하게 되면 DC모터(2)의 작동을 멈추는 명령을 발하게 된다.As described above, when the percentage of the reference value, which is the target opening amount, and the percentage of the present value, which is the opening amount of the ball valve 1 that is actually open, are compared and calculated in the controller 7, and the present value is smaller than the reference value. The controller 7 rotates the DC motor 2 further, so that in real time, the potentiometer 6 detects the current value of the ball valve 1 again and repeats the above-described comparison operation. do. Therefore, when the reference value and the present value coincide, a command to stop the operation of the DC motor 2 is issued.
이와 반대로, 현재값이 기준값보다 크면 제어기(7)는 DC모터(2)를 반대방향으로 회전시켜 볼밸브(1)를 닫도록 하고, 실시간으로 현재값을 검출하여 비교연산을 한 후 일치하는 지점에서 DC모터(2)를 멈추게 한다.On the contrary, if the present value is larger than the reference value, the controller 7 rotates the DC motor 2 in the opposite direction to close the ball valve 1, detects the present value in real time, performs a comparison operation, and then matches the point. To stop the DC motor (2).
포텐션미터(6)에 의해 현재값을 검출하는 간격은 1초단위로 하는 등 그 간격을 임의로 설정할 수 있고, 이의 간격과 가장 최적으로 작동되어 볼밸브(1)가 개폐되도록 DC모터(2)의 작동 속도가 제어될 필요성이 있다. 따라서 DC모터(2)의 회전속도를 제어하여 볼밸브(1)의 개폐 속도를 조절하는 방법은 DC모터(2)의 전압을 조절하는 모터스피드콘트롤러를 사용하거나 프로그레머블 로직 컨트롤러로서 수행하면 된다.The interval for detecting the current value by the potentiometer 6 can be arbitrarily set, for example, in units of 1 second, and the DC motor 2 is operated so that the ball valve 1 is opened and closed most optimally. It is necessary to control the speed of operation. Therefore, the method of controlling the opening / closing speed of the ball valve 1 by controlling the rotational speed of the DC motor 2 may be performed by using a motor speed controller that regulates the voltage of the DC motor 2 or as a programmable logic controller. .
그리고 안전장치로서 DC모터(2)가 작동할 때의 전류를 감지하여 프로그램에서 설정된 값을 넘거나, DC모터(2)가 일정시간 움직이지 않을 때 DC모터(2)의 출력을 정지시키는 구성을 추가할 수도 있다.As a safety device, the DC motor 2 senses the current when it operates and exceeds the value set in the program, or stops the output of the DC motor 2 when the DC motor 2 does not move for a predetermined time. You can also add
상기의 모든 작동을 모니터에 출력되어 현재운전상태, 알람정보, 현재값인 밸브개폐량(0~100%), 기준값인 기준개폐량(0~100%) 등을 표시할 수 있다.All of the above operations can be output to the monitor to display the current operation status, alarm information, the valve opening and closing value (0 to 100%) and the reference opening and closing value (0 to 100%) as the reference value.
이와 같이 본 발명은 유량제어에 있어 정량씩 정밀하게 제어할 수 있고, 잦은 on/off에 의한 전기적인 결함과 소음을 극복할 수 있으며, 간단한 구조로써 비례제어를 할 수 있는 장점이 있다.As described above, the present invention can precisely control flow rate by quantity, overcome electrical defects and noises caused by frequent on / off, and have a simple structure to perform proportional control.
도 1은 본 발명의 볼밸브부의 구성도1 is a configuration diagram of the ball valve unit of the present invention
도 2는 본 발명의 제어 흐름도2 is a control flow chart of the present invention
※ 도면의 주요 부분에 대한 부호의 설명※ Explanation of codes for main parts of drawing
1 : 볼밸브 2 : DC모터1: Ball Valve 2: DC Motor
3 : 구동축 4 : 기어박스3: drive shaft 4: gearbox
5a, 5b : 스퍼기어 6 : 포텐션미터5a, 5b: Spur gear 6: Potentiometer
7 : 제어기 8 : 표시돌기7 controller 8 display protrusion
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050018528A KR20050036923A (en) | 2005-03-07 | 2005-03-07 | A proportional control valve system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050018528A KR20050036923A (en) | 2005-03-07 | 2005-03-07 | A proportional control valve system |
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| Publication Number | Publication Date |
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| KR20050036923A true KR20050036923A (en) | 2005-04-20 |
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| KR1020050018528A KR20050036923A (en) | 2005-03-07 | 2005-03-07 | A proportional control valve system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100698930B1 (en) * | 2005-05-21 | 2007-03-23 | 명원 씨엔씨 주식회사 | A supply equipment of warm water by proportional control 3-way ball valve and its temperature control method |
| KR100782900B1 (en) | 2005-05-13 | 2007-12-06 | 이성수 | Ball valve and valve open-close system with it |
| KR100803662B1 (en) * | 2005-11-10 | 2008-02-19 | 울산대학교 산학협력단 | The Device For Operating A Water Control Valve, And The Water Control System |
| KR101033847B1 (en) * | 2011-01-10 | 2011-05-16 | 장한기술 주식회사 | Expention tank system used proportional control type automatic valve |
| KR200458179Y1 (en) * | 2008-09-26 | 2012-01-25 | 주식회사 노비타 | Operation device of electric motion way ball valve |
| CN103090083A (en) * | 2013-01-18 | 2013-05-08 | 陕西科技大学 | Closed-loop high-precision proportional valve |
-
2005
- 2005-03-07 KR KR1020050018528A patent/KR20050036923A/en not_active Application Discontinuation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100782900B1 (en) | 2005-05-13 | 2007-12-06 | 이성수 | Ball valve and valve open-close system with it |
| KR100698930B1 (en) * | 2005-05-21 | 2007-03-23 | 명원 씨엔씨 주식회사 | A supply equipment of warm water by proportional control 3-way ball valve and its temperature control method |
| KR100803662B1 (en) * | 2005-11-10 | 2008-02-19 | 울산대학교 산학협력단 | The Device For Operating A Water Control Valve, And The Water Control System |
| KR200458179Y1 (en) * | 2008-09-26 | 2012-01-25 | 주식회사 노비타 | Operation device of electric motion way ball valve |
| KR101033847B1 (en) * | 2011-01-10 | 2011-05-16 | 장한기술 주식회사 | Expention tank system used proportional control type automatic valve |
| CN103090083A (en) * | 2013-01-18 | 2013-05-08 | 陕西科技大学 | Closed-loop high-precision proportional valve |
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