KR101380014B1 - Method for controlling and detecting zero-flow of booster pump system included variable speed pump - Google Patents

Method for controlling and detecting zero-flow of booster pump system included variable speed pump Download PDF

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KR101380014B1
KR101380014B1 KR1020130027742A KR20130027742A KR101380014B1 KR 101380014 B1 KR101380014 B1 KR 101380014B1 KR 1020130027742 A KR1020130027742 A KR 1020130027742A KR 20130027742 A KR20130027742 A KR 20130027742A KR 101380014 B1 KR101380014 B1 KR 101380014B1
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South Korea
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flow rate
pump
flow
detection control
pressure
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KR1020130027742A
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Korean (ko)
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김대환
김성곤
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김대환
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0245—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0077—Safety measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/11—Kind or type liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/60—Fluid transfer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

The present invention relates to a pressurized water supply booster pump system as water supply equipment, and more particularly, to a method for detecting and controlling a zero flow rate section where no water is used in the automatic control of a booster pump system. According to the present invention, a method for detecting and controlling a zero flow rate of a booster pump system having a variable speed pump includes the steps of: checking whether a discharging pressure and a set pressure are the same as each other and whether one variable speed pump is operated; if the conditions are maintained during a zero flow rate period, increasing the rotating speed of the pump to a stop pressure to increase the discharging pressure so as to determine whether the period is a zero flow rate section; if the increased discharging pressure is maintained higher than the set pressure, determining that the period is the zero flow rate where no water is used to stop the variable speed pump and completing the zero flow rate sensing and controlling function. According to the present invention, the method prevents unnecessary operations, without having any influence on the existing booster pump automatic control algorithm, thus decreasing energy loss, extending the life term of the pump, and preventing the quality of water supply. [Reference numerals] (131) Start a timer interrupt pump control; (132) Conduct various tasks; (133) Conduct zero flow rate sensing at each step; (133a) Start zero flow rate sensing; (133b) Zero flow rate sensing step = 1; (133c) Conduct step 1 of zero flow rate sensing; (133d) Zero flow rate sensing step = 2; (133e) Conduct step 2 of zero flow rate sensing; (133f) Zero flow rate sensing step = 3; (133g) Conduct step 3 of zero flow rate sensing; (133h) Zero flow rate sensing step = 4; (133i) Conduct step 4 of zero flow rate sensing; (133j) Finish zero flow rate sensing; (134) Conduct pump control according to discharging pressure; (134a) Start pump control; (134b) Set pressure < discharging pressure; (134c) Set pressure > discharging pressure; (134d) Conduct step 0 of zero flow rate sensing; (134e) Finish pump control; (135) Finish conduction of pump control by timer interrupt; (AA,CC,EE,GG,JJ,LL) Yes; (BB,DD,FF,HH,II,KK) No

Description

변속펌프를 포함하는 부스터펌프시스템의 무유량감지제어 방법 {METHOD FOR CONTROLLING AND DETECTING ZERO-FLOW OF BOOSTER PUMP SYSTEM INCLUDED VARIABLE SPEED PUMP}Flow-through detection control method of booster pump system including variable speed pump {METHOD FOR CONTROLLING AND DETECTING ZERO-FLOW OF BOOSTER PUMP SYSTEM INCLUDED VARIABLE SPEED PUMP}

본 발명은 물을 공급하기 위한 급수설비인 가압급수방식의 부스터펌프에 관한 것으로 보다 상세하게는 부스터펌프 제어방식에 대한 것이다.
The present invention relates to a booster pump of a pressurized water supply method, which is a water supply facility for supplying water, and more particularly, to a booster pump control method.

본 발명의 부스터펌프시스템은 도 1에서 보는 바와 같이 펌프(20)와 펌프를 제어하기 위한 제어반(10)으로 구성된다.Booster pump system of the present invention is composed of a pump 20 and a control panel 10 for controlling the pump as shown in FIG.

본 발명의 부스터펌프시스템의 제어방식은The control method of the booster pump system of the present invention

첫째, 대수를 가/감하여 펌프들을 제어하는 대수(정속펌프)제어방식First, the logarithmic (constant speed pump) control method to control the pumps by adding / subtracting the number

둘째, 도 3의 부스터펌프시스템과 같이 변속장치(인버터)들을 이용하여 펌프의 모터속도를 제어하는 회전수(변속펌프)제어방식Second, the rotation speed (shift pump) control method for controlling the motor speed of the pump using the transmission (inverters), such as the booster pump system of FIG.

셋째, 도 2의 부스터펌프시스템과 같이 상기 두 방식을 혼합한 제어방식Third, the control method of mixing the two methods as in the booster pump system of FIG.

으로 나뉜다.
Divided into

부스터펌프시스템은 토출측 급수배관에 수압을 측정하는 압력센서를 두고 실시간 감지를 통해 전송되는 수압(토출압력)이 일정한 압력(설정압력)을 유지하도록 펌프를 제어한다.The booster pump system has a pressure sensor for measuring the water pressure in the discharge water supply pipe and controls the pump so that the water pressure (discharge pressure) transmitted through real-time detection maintains a constant pressure (set pressure).

도 2는 변속펌프 한 대와 다수의 정속펌프로 구성된 가장 일반적인 부스터펌프시스템이다. 제어장치는 토출(22)측에 설치된 압력센서(23)를 통해 검출된 토출압력이 제어장치(11)에 설정된 설정압력을 유지하도록 하기 위해 Figure 2 is the most common booster pump system consisting of a variable speed pump and a plurality of constant speed pumps. The control device is configured to maintain the set pressure set in the control device 11 by the discharge pressure detected through the pressure sensor 23 provided on the discharge 22 side.

토출압력이 설정압력보다 낮아지는 경우: 펌프제어신호를 출력하여 최초로 다수의 펌프(20) 중에서 하나를 선택(13)하고, 제어장치(11)로부터 지령받은 속도제어정보에 따라 변속장치(12, 인버터)를 통해 변환된 속도를 갖는 전원을 모터에 공급하고, 변속펌프(20a)의 속도가 최대가 되면 펌프제어신호를 출력하여 펌프를 선택(13)하고 추가로 정속펌프(20b, 20c, 20d)를 가동시킨다. When the discharge pressure is lower than the set pressure: the pump control signal is outputted and one of the plurality of pumps 20 is first selected (13), and the transmission device 12, according to the speed control information commanded from the control device 11, Inverter) supplies power having the converted speed to the motor, and when the speed of the speed change pump 20a is maximized, outputs a pump control signal to select the pump 13 and additionally the constant speed pump 20b, 20c, 20d. )).

토출압력이 설정압력보다 높아지는 경우: 변속펌프(20a)의 속도가 최소가 되면 추가로 펌프제어신호를 출력하여 펌프를 선택(13)하고 정속펌프(20b, 20c, 20d)를 정지시키고, 정속펌프가 모두 정지한 후에 마지막으로 변속펌프(20a)를 정지시킨다. When the discharge pressure is higher than the set pressure: When the speed of the speed change pump 20a becomes minimum, an additional pump control signal is output to select the pump (13), and stop the constant speed pumps 20b, 20c, and 20d, and the constant speed pump After all stops, the shift pump 20a is finally stopped.

도 3은 다수의 변속펌프로 구성된 부스터펌프시스템이다. 제어장치는 토출(22)측에 설치된 압력센서(23)를 통해 검출된 토출압력이 제어장치(11)에 설정된 설정압력을 유지하도록 하기 위해 3 is a booster pump system composed of a plurality of variable speed pumps. The control device is configured to maintain the set pressure set in the control device 11 by the discharge pressure detected through the pressure sensor 23 provided on the discharge 22 side.

토출압력이 설정압력보다 낮아지는 경우: 펌프제어신호를 출력하여 최초로 다수의 펌프(20) 중에서 하나를 선택(13)하고, 제어장치(11)로부터 지령받은 속도제어정보에 따라 변속장치(12, 인버터)를 통해 변환된 속도를 갖는 전원을 모터에 공급하고, 변속펌프(20a)의 속도가 최대가 되면 펌프제어신호를 출력하여 다음 펌프를 선택(13)하고 추가로 변속펌프(20b, 20c, 20d)를 가동시켜 제어장치(11)로부터 지령받은 속도제어정보에 따라 변속장치(12, 인버터)를 통해 변환된 속도를 갖는 전원을 모터에 공급하는 동작을 동일하게 수행한다.When the discharge pressure is lower than the set pressure: the pump control signal is outputted and one of the plurality of pumps 20 is first selected (13), and the transmission device 12, according to the speed control information commanded from the control device 11, Inverter) supplies the power having the converted speed to the motor, and when the speed of the speed change pump 20a is maximized, outputs a pump control signal to select the next pump (13), and further the speed change pumps 20b, 20c, 20d) is operated to perform the same operation of supplying power having a speed converted through the transmission 12 (inverter) to the motor in accordance with the speed control information commanded from the control device 11.

토출압력이 설정압력보다 높아지는 경우: 변속펌프(20a)의 속도가 최소가 되면 해당 변속펌프를 정지시키고, 펌프제어신호를 출력하여 다음 펌프를 선택(13)하고 속도를 감소시켜 정지시키는 동작을 동일하게 수행한다.
When the discharge pressure is higher than the set pressure: When the speed of the speed change pump 20a becomes minimum, the speed change pump is stopped, the pump control signal is output, the next pump is selected (13), and the speed decrease is stopped. Do it.

이러한 부스터펌프시스템을 이용한 급수서비스에 있어서 물의 사용이 적거나 없는 경우에 한 대의 변속펌프가 미약한 유량의 변화에 민감하게 반응하여 기동과 정지를 반복함은 물론 무효운전을 하게 됨으로써 급수품질의 저하, 펌프의 수명, 에너지 손실 등에 영향을 미친다. 이러한 현상이 발생하는 구간을 소유량 혹은 무유량(Zero-Flow)구간이라고 한다.
In the water supply service using the booster pump system, when there is little or no water use, a single variable pump reacts sensitively to the slight change in the flow rate, repeats the start and stop, and also invalidates the water supply quality. , Pump life, energy loss, etc. The section in which this phenomenon occurs is called a low flow or zero flow section.

기존에는 이러한 무유량구간에 대한 해결방안으로In the past, as a solution to such a free flow section,

첫째, 낮은 용량의 펌프를 예비로 적용하여 에너지의 손실을 줄이는 방법을 사용하거나, First, use a low-capacity pump to spare energy,

둘째, 단 한 대의 변속펌프가 운전 중이고 설정압력과 토출압력이 동일하게 유지되면 강제로 변속펌프의 속도를 감속시켜 설정된 정지속도 이하에서 정지지연시간동안 유지되면 강제로 정지하는 방법을 사용하거나,Second, if only one shifting pump is operating and the set pressure and discharge pressure remain the same, the speed of the shifting pump is forcibly reduced, and if it is maintained for a stop delay time below the set stop speed, it is forcibly stopped.

셋째, 체절운전모드인지 판별하고 인버터 주파수가 설정된 인버터 하한주파수에서 30초동안 운전하면 강제로 정지하는 방법을 사용하거나,(특허 등록 제10-0311391호, "인버터부스터펌프시스템의 체절운전제어방법") Third, use the method of determining whether the operation mode is the disconnection operation mode and forcibly stopping when the inverter frequency is operated for 30 seconds at the set inverter lower limit frequency, or (Patent Registration No. 10-0311391, "The method of controlling the operation of the inverter booster pump system"). )

넷째, 단 한 대의 변속펌프가 운전 중이고 설정압력과 토출압력이 동일하게 유지되면 강제로 변속펌프의 속도를 감속시켜 토출압력의 변화가 없으면 펌프의 정지압력까지 증가시켜 정지하는 방법을 사용하였다.(특허 등록 제10-0895392호, "인버터가 적용된 부스터펌프 소유량판별제어")
Fourth, if only one shifting pump is in operation and the set pressure and discharge pressure remain the same, the speed of the shifting pump is forcibly reduced. If there is no change in the discharge pressure, the pump stops by increasing to the stop pressure of the pump. Patent registration No. 10-0895392, "Inverter booster pump low flow discrimination control")

상기 기존의 무유량감지제어 방법에 있어서 In the existing flow rate detection control method

첫째 방법은 낮은 용량의 펌프가 계속해서 운전을 하게 되므로 에너지 손실이 크고, 낮은 용량의 펌프 수명이 단축되는 문제가 있다. The first method has a problem in that a low capacity pump is continuously operated, resulting in high energy loss and shortening of a low capacity pump life.

둘째와 셋째 방법은 펌프의 정지속도 혹은 하한주파수를 잘못 설정할 경우에 무유량 구간에서도 계속해서 운전하게 되므로 에너지 손실의 발생은 물론 펌프의 수명이 단축되고, 무유량구간이 아닌 실제로 물을 사용하는 구간에서도 강제로 펌프를 정지시키는 현상이 발생하여 급수품질이 급격히 하락하는 현상이 발생한다.In the second and third methods, if the stop speed or the lower limit frequency of the pump is set incorrectly, the pump will continue to operate in the no-flow section, resulting in energy loss, shortening the life of the pump, and a section in which water is actually used instead of the no-flow section. In this case, the pump stops forcibly and the water supply quality drops sharply.

넷째 방법은 무유량구간의 여부를 펌프의 회전속도를 낮춰 물의 사용여부를 판단하여 정지시키기 때문에 이전의 방법에 비해 에너지 손실을 줄이고, 펌프의 수명 단축을 개선시킬 수 있지만, 무효운전구간임을 판단하기 위해 회전속도를 낮추는 동작에 의해 급수품질이 저하될 우려가 있다.
Fourth method, because the flow rate of the pump is lowered to determine whether water is being used or not, the energy loss can be reduced and the life of the pump can be shortened compared to the previous method. In order to reduce the rotational speed, the water supply quality may be deteriorated.

따라서, 본 발명의 변속펌프를 포함하는 부스터펌프시스템의 무유량감지제어 방법에 있어서, 에너지 손실 및 펌프수명 단축에 대한 문제를 해결함은 물론 급수품질을 저하시키지 않도록 해야 하며, 기존의 부스터펌프 자동제어알고리즘에 영향을 미치지 않아야 한다.
Therefore, in the flow rate sensing control method of the booster pump system including the variable speed pump of the present invention, the problem of energy loss and shortening of the pump life should be solved and the water supply quality should not be lowered. It should not affect the control algorithm.

본 발명에서 상기 과제를 해결하기 위해 도 4와 같이 기존의 부스터펌프시스템 자동제어알고리즘에서 펌프제어를 위한 타이머 인터럽트 임무(130)에 단계별 무유량감지제어(133)에 대한 알고리즘을 추가하여 적용한다.
In order to solve the above problems in the present invention, the algorithm for the stepless flow detection control 133 is applied to the timer interrupt task 130 for the pump control in the conventional booster pump system automatic control algorithm as shown in FIG. 4.

도 4는 무유량감지제어 기능이 포함된 부스터펌프시스템 자동제어알고리즘이다. 시스템이 시작되면 화면정보표시를 포함한 무한반복기능(110)을 수행하게 된다. 이러한 무한반복기능이 수행되는 중에 타이머, 통신, 외부입력 등 각종 인터럽터에 의한 임무(120)를 수행하게 된다. Figure 4 is a booster pump system automatic control algorithm with a flow detection control function. When the system starts, it performs the infinite repeating function 110 including the display of the screen information. While the infinite repetition function is being performed, the mission 120 may be performed by various interrupters such as timer, communication, and external input.

이 타이머 인터럽터에 의한 기능 중에서 펌프제어를 위한 타이머 인터럽터 임무(130)를 시작(단계131)하게 되고, 다음으로 펌프제어와 관련된 각종 임무(단계132)를 수행하고, 다음으로 단계별 무유량감지제어(단계133)가 수행되고, 토출압력과 설정압력이 같고 변속펌프 한 대만이 운전 중인지 확인하는 무유량감지제어 단계0가 포함된 토출압력에 따른 펌프제어(단계134)를 수행하고 종료(단계135)하게 된다.
Among the functions by the timer interrupter, a timer interrupter mission 130 for pump control is started (step 131), and then various tasks related to pump control (step 132) are performed, and next stepless flow rate detection control ( Step 133) is performed, and the pump control (step 134) according to the discharge pressure including the zero flow sensing control step 0 which checks whether the discharge pressure and the set pressure are the same and Taiwan is shifting is performed (step 135). Done.

도 5는 상기 도 4에서 언급한 단계별 무유량감지제어가 펌프제어를 위한 타이머 인터럽터 임무(130) 내에서 어떻게 수행되는지 나타낸다. FIG. 5 shows how the stepless flow rate detection control mentioned in FIG. 4 is performed in the timer interrupter task 130 for pump control.

우선, 토출압력에 따른 펌프제어(단계134)에 포함되어 토출압력과 설정압력이 같고, 한 대만의 변속펌프가 운전 중인지 확인하여 단계 1을 선언하는 무유량감지제어 단계 0(단계134d),First, the flow rate detection control step 0 (step 134d), which is included in the pump control according to the discharge pressure (step 134) and the discharge pressure is equal to the set pressure, declares step 1 by checking whether a Taiwanese speed change pump is in operation.

단계별 무유량감지제어(단계133)에 포함되어 무유량감지제어 단계가 1인지 판단(단계133b)하고 무유량감지제어를 위한 모든 카운트 및 플래그들을 초기화하고 단계 2를 선언하는 무유량감지제어 단계 1(단계133c),Flow level detection control step 1 which determines whether the flow rate detection control step 1 is included in the stepless flow rate detection control (step 133) (step 133b), initializes all counts and flags for the flow rate detection control, and declares step 2. (Step 133c),

단계별 무유량감지제어(단계133)에 포함되어 무유량감지제어 단계가 2인지 판단(단계133d)하고 단계 0의 상태가 설정된 무유량감지주기 동안 유지되는지 판단하여 단계 3을 선언하는 무유량감지제어 단계 2(단계133e),It is included in the stepless flow detection control (step 133) to determine whether the flow rate detection control step is 2 (step 133d) and determine whether the state of step 0 is maintained during the set flow rate detection period and determine the flow rate detection step 3. Step 2 (step 133e),

단계별 무유량감지제어(단계133)에 포함되어 무유량감지제어 단계가 3인지 판단(단계133f)하고 실제로 무유량구간인지 판단하기 위해 정지압력만큼 펌프의 회전속도를 높여 토출압력을 증가시키고 정지압력에 도달하면 단계 4을 선언하는 무유량감지제어 단계 3(단계133g),It is included in the stepless flow rate detection control (step 133) to determine whether the flow rate detection control step is 3 (step 133f) and to increase the discharge pressure by increasing the rotational speed of the pump by the stop pressure to determine whether the flow rate is actually a no flow section. Flow detection control step 3 (step 133g), which declares step 4 when it reaches

단계별 무유량감지제어(단계133)에 포함되어 무유량감지제어 단계가 4인지 판단(단계133h)하고 토출압력이 설정압력보다 높게 유지되면 물을 사용하지 않는 무유량구간인 것으로 판단하여 변속펌프를 정지시키고 무유량감지제어 기능을 종료하는 무유량감지제어 단계 4(단계133i)로 구성된 변속펌프를 포함하는 부스터펌프시스템의 무유량감지제어 방법을 구현한다.
If the flow rate detection control step (step 133) is included in the stepless flow detection control step (step 133h) and the discharge pressure is maintained higher than the set pressure, it is determined that it is a flow-free section that does not use water. A flow rate sensing control method of a booster pump system including a shift pump configured in a flow rate sensing control step 4 (step 133i) for stopping and ending the flow rate sensing control function is implemented.

본 발명을 통해Through the present invention

첫째, 펌프의 불필요한 운전 방지First, prevent unnecessary running of the pump

둘째, 펌프의 수명 연장Second, extend the life of the pump

셋째, 급수품질의 향상Third, improving water quality

넷째, 에너지 절감의 효과를 얻을 수 있다.
Fourth, energy savings can be obtained.

도 1: 부스터펌프시스템의 실시예
도 2: 한 대의 변속펌프와 다수의 정속펌프로 구성된 제어방식을 갖는 부스터펌프시스템 구성도
도 3: 다수의 변속펌프로 구성된 제어방식을 갖는 부스터펌프시스템 구성도
도 4: 무유량감지제어 기능이 포함된 부스터펌프시스템 자동제어알고리즘의 프로그램 구성도
도 5: 부스터펌프시스템 자동제어알고리즘의 타이머 인터럽터에 의한 펌프제어 임무에 적용된 무유량감지제어에 대한 프로그램 순서도
도 6: 무유량감지제어 단계 0에 대한 프로그램 순서도
도 7: 무유량감지제어 단계 1에 대한 프로그램 순서도
도 8: 무유량감지제어 단계 2에 대한 프로그램 순서도
도 9: 무유량감지제어 단계 3에 대한 프로그램 순서도
도 10: 무유량감지제어 단계 4에 대한 프로그램 순서도
도 11: 무유량감지제어 수행에 따른 압력 및 속도(회전수) 실시예 1
도 12: 무유량감지제어 수행에 따른 압력 및 속도(회전수) 실시예 2
도 13: 변속펌프 운전속도에 따른 토출배관의 압력과 유량 변화 그래프1 embodiment of a booster pump system
2 is a configuration diagram of a booster pump system having a control system composed of one variable speed pump and a plurality of constant speed pumps.
3 is a configuration diagram of a booster pump system having a control method composed of a plurality of shift pumps
4 is a program configuration diagram of an automatic control algorithm of a booster pump system including a flow detection control function
Fig. 5: Program flow diagram for flow rate detection control applied to the pump control task by the timer interrupter of the booster pump system automatic control algorithm
6: Program flow chart for the zero flow detection control step 0
Fig. 7: Program flow chart for flow detection control step 1
Fig. 8: Program flow chart for flow detection control step 2
9: Program flow chart for flow detection control step 3
10 is a program flow chart for the flow detection control step 4
Figure 11: Pressure and speed (speed) according to the flow rate detection control Example 1
12: Pressure and speed (speed) according to the flow rate detection control Example 2
13: Pressure and flow rate change graph of the discharge pipe according to the operation speed of the shift pump

본 발명은 도 1의 부스터펌프 자동제어시스템 자동제어반(10)에 탑재된 도 2와 도 3의 제어장치(11)에 도 4의 무유량감지제어 기능이 포함된 부스터펌프시스템 자동제어알고리즘의 프로그램 순서도를 단계별로 설명함으로써 구체화 할 수 있다.The present invention is a program of a booster pump system automatic control algorithm including the flow rate sensing control function of FIG. 4 in the control device 11 of FIGS. 2 and 3 mounted in the booster pump automatic control system 10 of FIG. 1. It can be specified by explaining the flowchart step by step.

프로그램 순서도에 대한 단계별 설명을 용이하게 하기 위해 '숫자-숫자-숫자-숫자.'으로 구성된 표시를 사용하며, 이는 각 단계에서 사용되는 판단(조건문)을 나타내기 위한 것으로서 첫째 숫자는 무유량감지제어의 단계를 나타내고, 다음 숫자부터 단계에 포함되어 있는 조건에 대한 상위에서 하위로의 순서를 나타낸다.
To facilitate a step-by-step description of the program flow chart, the notation consisting of 'number-number-number-number.' Is used to indicate the judgment (conditional statement) used in each step. It shows the stage of, and shows the order from upper to lower for the conditions included in the stage from the next number.

도 5는 부스터펌프시스템 자동제어알고리즘의 타이머 인터럽터에 의한 펌프제어 임무에 적용된 무유량감지제어에 대한 프로그램 순서도이다.FIG. 5 is a program flow chart for flow rate detection control applied to a pump control task by a timer interrupter of the booster pump system automatic control algorithm.

타이머 인터럽터 펌프제어가 시작(단계131)되고, 각종 펌프제어와 관련된 임무가 수행(단계132)되고, 단계별 무유량감지제어(단계133)가 수행되고, 토출압력에 따른 펌프제어(단계134)가 수행되고 종료(단계135)된다.Timer interrupt pump control is started (step 131), various pump control related tasks are performed (step 132), stepless flow rate detection control (step 133) is performed, and pump control (step 134) according to the discharge pressure is performed. It is performed and ends (step 135).

우선, 상기 토출압력에 따른 펌프제어(134)에 있어서 펌프제어가 시작(134a)되고, 토출압력이 설정압력 미만(단계134b)이면 펌프를 추가로 기동하는 단계를 수행하여 펌프제어가 종료(단계134e)되고, 토출압력이 설정압력 초과(단계134c)하면 펌프를 추가로 정지하는 단계를 수행하여 펌프제어가 종료(단계134e)되고, 토출압력과 설정압력이 같으면 무유량감지제어 단계 0(단계134d)가 수행된다. First, in the pump control 134 according to the discharge pressure, the pump control is started 134a, and if the discharge pressure is less than the set pressure (step 134b), the pump is ended by additionally starting the pump. 134e), and if the discharge pressure exceeds the set pressure (step 134c), the pump is further stopped by performing a step of stopping the pump (step 134e), and if the discharge pressure and the set pressure are the same, the flow rate detection control step 0 (step 134d) is performed.

상기 설정압력과 토출압력이 같은 조건을 통해 무유량감지제어 단계 0에서 변속펌프가 한 대뿐이면 다음 타이머 인터럽터 펌프제어 임무(130)에서 단계별 무유량감지제어(133)에서 무유량감지제어 단계를 판단(133b, 133d, 133f, 133h)하여 해당 무유량감지제어 단계(133c, 133e, 133g, 133i)를 수행하고 종료(133j)하게 된다.
If there is only one shift pump in the zero flow detection control step 0 through the same condition as the set pressure and the discharge pressure, the flow rate detection control step is determined in the stepless flow rate detection control 133 in the next timer interrupter pump control task 130. In step 133b, 133d, 133f, and 133h, the flow rate detecting control steps 133c, 133e, 133g, and 133i are performed, and the process ends 133j.

도 6은 토출압력에 따른 펌프제어(단계134)에서 토출압력과 설정압력이 같고, 한 대의 변속펌프만 운전 중인지 확인하여 단계 1을 선언하는 무유량감지제어 단계 0에 대한 프로그램 순서도이다. FIG. 6 is a program flow chart for the zero flow detection control step 0 declaring step 1 by confirming that the discharge pressure and the set pressure are the same in the pump control according to the discharge pressure (step 134) and that only one shifting pump is in operation.

펌프제어 타이머 인터럽터에 의해 주기적으로 토출압력에 따른 펌프제어(단계134)에서 시작(단계200)되고, 설정압력이 토출압력과 같은지 판단(단계201)하고 한 대의 변속펌프만 운전하고 있는지 판단(단계202)하고, The pump control timer interrupter periodically starts the pump control according to the discharge pressure (step 134) (step 200), determines whether the set pressure is equal to the discharge pressure (step 201), and judges whether only one shifting pump is in operation (step 202),

0-1. 설정압력과 토출압력이 같고 한 대의 변속펌프만이 운전하고 있으면 무유량감지제어 단계 1을 선언(단계203)하고 종료(단계204)하고, 0-1. If the set pressure and the discharge pressure are the same and only one shifting pump is operating, the flow rate detecting control step 1 is declared (step 203), and the process ends (step 204).

0-2. 반대로 설정압력과 토출압력이 다르거나 한 대 이상의 변속펌프가 운전하고 있으면 종료(단계204)한다.
0-2. On the contrary, if the set pressure and the discharge pressure are different or one or more shift pumps are operating, the process ends (step 204).

도 7은 단계별 무유량감지제어(단계133)에서 무유량감지제어를 위한 모든 카운트 및 플래그들을 초기화하고 단계 2를 선언하는 무유량감지제어 단계 1에 대한 프로그램 순서도이다. 무유량감지제어 단계 0을 통해 시작(단계300)되고, 무유량감지주기 카운트 및 채터링 감지지연 카운트, 변속펌프 속도증가시간 카운트, 무유량판별지연 카운트를 모두 초기화(단계301)하고, 무유량감지제어 단계 2를 선언(단계302)하고 종료(단계303)한다.
FIG. 7 is a program flow chart for the no flow detection control step 1 which initializes all counts and flags for the no flow detection control and declares step 2 in the stepless flow detection control (step 133). It starts through the zero flow detection control step 0 (step 300), initializes all the flow rate detection cycle count and chattering detection delay count, shift pump speed increase time count, flow rate discrimination delay count (step 301), Detecting control step 2 (step 302) and ending (step 303).

도 8은 단계별 무유량감지제어(단계133)에서 단계 0의 상태가 설정된 무유량감지주기 동안 유지되는지 판단하여 단계 3를 선언하는 무유량감지제어 단계 2에 대한 프로그램 순서도이다. FIG. 8 is a program flow chart for the no-flow detection control step 2 declaring step 3 by determining whether the state of step 0 is maintained during the set no-flow detection period in the step-free flow detection control (step 133).

무유량감지제어 단계 1을 통해 시작(단계400)되고, 무유량감지주기를 카운트(단계401)하고, 설정압력과 토출압력이 같은지 판단(단계402)하고, The flow rate detection control step is started through step 1 (step 400), the flow rate detection cycle is counted (step 401), and it is determined whether the set pressure and the discharge pressure are the same (step 402),

2-1. 여기서 설정압력과 토출압력이 같으면 노이즈로 인한 토출압력의 순간적인 변화를 걸러내기 위한 채터링감지지연 카운트를 초기화(단계403)하고, 채터링감지지연플래그를 발생(단계404)시키고, 카운트된 무유량감지주기가 설정된 무유량감지주기 이상인지 판단(단계405)하고, 2-1. If the set pressure and the discharge pressure are the same, the chattering detection delay count is initialized (step 403) to filter out the instantaneous change in the discharge pressure due to noise, and the chattering detection delay flag is generated (step 404). It is determined whether the flow rate detection cycle is equal to or greater than the set flow rate detection cycle (step 405),

2-1-1. 여기서 카운트된 무유량감지주기가 설정된 무유량감지주기 이상일 경우에는 모든 카운트를 초기화하고 현재 설정압력을 저장하고, 현재 펌프운전속도를 무유량운전속도로 저장(단계406)하고 무유량감지제어 단계 3을 선언(단계407)하고 종료(단계412)하고, 2-1-1. If the counted flow rate detection cycle is equal to or greater than the set flow rate detection period, all counts are initialized and the current set pressure is stored, the current pump operation speed is stored as the flow rate operation speed (step 406), and the flow rate detection control step 3 Declare (step 407) and exit (step 412),

2-1-2. 반대로 카운트된 무유량감지주기가 설정된 무유량감지주기 미만일 경우에는 종료(단계412)한다.2-1-2. On the contrary, if the counted flow rate detection period is less than the set flow rate detection period, the process ends (step 412).

2-2. 설정압력과 토출압력이 같지 않으면 채터링감지지연플래그가 발생되었는지 판단(단계408)하고, 2-2. If the set pressure and the discharge pressure are not the same, it is determined whether a chattering detection delay flag is generated (step 408),

2-2-1. 여기서 채터링감지지연 플래그가 발생되어 있으면 토출압력채터링감지지연을 카운트(단계409)하고, 카운트된 채터링감지지연이 설정된 채터링감지지연 이상인지 판단(단계410)하고, 2-2-1. If the chattering sensing delay flag is generated, the discharge pressure chattering sensing delay is counted (step 409), and it is determined whether the counted chattering sensing delay is equal to or greater than the set chattering sensing delay (step 410),

2-2-1-1. 여기서 카운트된 채터링감지지연이 설정된 채터링감지지연 이상이면 모든 카운트를 초기화 하고 채터링감지지연 카운트와 플래그를 초기화 하고 무유량감지제어 단계 0을 선언(단계411)하고 종료(단계412)하고, 2-2-1-1. If the counted chattering detection delay is greater than or equal to the set chattering detection delay, all counts are initialized, the chattering detection delay count and flag are initialized, and the flow rate detecting control step 0 is declared (step 411), and ends (step 412).

2-2-1-2. 반대로 카운트된 채터링감지지연이 설정된 채터링감지지연 미만이면 종료(단계412)하고, 2-2-1-2. On the contrary, if the counted chattering sensing delay is less than the set chattering sensing delay, the process ends (step 412),

2-2-2. 반대로 채터링감지지연 플래그가 발생되어 있지 않으면 모든 카운트를 초기화 하고 채터링감지지연 카운트와 플래그를 초기화 하고 무유량감지제어 단계 0을 선언(단계411)하고 종료(단계412)한다.
2-2-2. On the contrary, if the chattering detection delay flag is not generated, all counts are initialized, the chattering detection delay count and flag are initialized, and the flow rate detection control step 0 is declared (step 411), and the process ends (step 412).

도 9은 단계별 무유량감지제어(단계133)에서 실제로 무유량구간인지 판단하기 위해 정지압력만큼 펌프의 회전속도를 높여 토출압력을 증가시키고 정지압력에 도달하면 단계 4을 선언하는 무유량감지제어 단계 3에 대한 프로그램 순서도이다.9 is a flow-free detection control step of declaring step 4 when increasing the discharge pressure by increasing the rotational speed of the pump as much as the stop pressure to determine whether the flow-through detection step (step 133) is actually a flow-free section. Program flow diagram for 3.

무유량감지제어 단계 2에 의해 시작(단계500)되고, 설정압력을 정지압력으로 변경(단계501)하고, 변속펌프의 속도증가시간을 카운트(단계502)하고, 토출압력이 정지압력 미만인지 판단(단계503)하고, The flow rate detecting control starts with step 2 (step 500), changes the set pressure to the stop pressure (step 501), counts the speed increase time of the speed change pump (step 502), and determines whether the discharge pressure is less than the stop pressure. (Step 503),

3-1. 토출압력이 정지압력 미만이면 현재운전속도가 최대속도 이상이거나, 카운트된 변속펌프 속도증가시간이 설정된 변속펌프 속도증가시간 이상인지 판단(단계504)하고, 3-1. If the discharge pressure is less than the stop pressure, it is determined whether the current operating speed is greater than or equal to the maximum speed or if the counted shift pump speed increase time is equal to or greater than the set shift pump speed increase time (step 504),

3-1-1. 여기서 현재운전속도가 최대속도 이상이거나 카운트된 변속펌프 속도증가시간이 설정된 변속펌프 속도증가시간 이상이면 모든 카운트를 초기화 하고, 무유량감지제어 단계를 0으로 초기화하고, 무유량운전속도를 설정된 최저운전속도로 초기화(단계505)하여 종료(단계509)하고,3-1-1. If the current operation speed is more than the maximum speed or if the counted pump speed increase time is more than the set speed pump speed increase time, all counts are initialized, the flow rate detection control step is initialized to 0, and the flow rate operation speed is set to the lowest operation. Initialize at speed (step 505) to finish (step 509),

3-1-2. 현재운전속도가 최대속도 미만이고 카운트된 변속펌프 속도증가시간이 설정된 변속펌프 속도증가시간 미만이면 토출압력이 원래 설정압력 이하인지 판단(단계506)하고3-1-2. If the current operation speed is less than the maximum speed and the counted shift pump speed increase time is less than the set shift pump speed increase time, it is determined whether the discharge pressure is less than the original set pressure (step 506).

3-1-2-1. 여기서 토출압력이 원래 설정압력 이하이면 상기 모든 카운트를 초기화 하고, 무유량감지제어 단계를 초기화하고, 무유량운전속도를 설정된 최저운전속도로 초기화(단계505)하여 종료(단계509)하고, 3-1-2-1. If the discharge pressure is less than the original set pressure, all the counts are initialized, the flow rate detection control step is initialized, the flow rate operation speed is initialized to the set minimum operation speed (step 505), and ends (step 509),

3-1-2-2. 반대로 토출압력이 원래 설정압력 이하가 아니면 종료(단계509)한다.3-1-2-2. On the contrary, if the discharge pressure is not lower than the original set pressure, the process ends (step 509).

3-2. 토출압력이 정지압력 이상이면 모든 카운트를 초기화(단계507)하고 무유량감지제어 단계를 4로 선언(단계508)하여 종료(단계509)한다.
3-2. If the discharge pressure is equal to or greater than the stop pressure, all counts are initialized (step 507), and the flow rate detecting control step is declared as 4 (step 508), and the process ends (step 509).

도 10는 단계별 무유량감지제어(단계133)에서 토출압력이 설정압력보다 높게 유지되면 물을 사용하지 않는 무유량구간인 것으로 판단하여 변속펌프를 정지시키고 무유량감지제어 기능을 종료하는 무유량감지제어 단계 4에 대한 프로그램 순서도이다.10 is a flow-free detection to stop the shift pump and end the flow-free detection control by determining that the discharge pressure is higher than the set pressure in the step-free flow detection control (step 133). Program flow chart for control step 4.

무유량감지제어 단계 3에 의해 시작(단계600)되고, 설정압력을 원래의 설정압력으로 설정(단계600)하여 변속펌프의 속도를 감소시키고, 토출압력이 설정압력 초과인지 판단(단계602)하고, The flow rate detection control step starts with step 3 (step 600), sets the set pressure to the original set pressure (step 600) to reduce the speed of the transmission pump, determines whether the discharge pressure exceeds the set pressure (step 602), and ,

4-1. 토출압력이 설정압력을 초과한 경우에 현재운전속도가 무유량운전속도 이하인지 판단(단계603)하고, 4-1. If the discharge pressure exceeds the set pressure, it is determined whether the current operating speed is lower than the no flow operation speed (step 603),

4-1-1. 현재운전속도가 무유량운전속도 이하이면 무유량판별지연을 카운트(단계604)하고, 카운트된 무유량판별지연이 설정된 무유량판별지연 이상인지 판단(단계605)하고, 4-1-1. If the current operation speed is less than or equal to the no-flow operation speed, the no-flow discrimination delay is counted (step 604), and it is determined whether the counted no-flow discrimination delay is greater than or equal to the set no-flow discrimination delay (step 605),

4-1-1-1. 카운트된 무유량판별지연이 설정된 무유량판별지연 이상이면 인버터정지명령을 발생(단계606)하고, 인버터정지 명령이 수행완료되었는지 판단(단계607)하고,4-1-1-1. If the counted flow rate discrimination delay is greater than or equal to the set flow rate discrimination delay, an inverter stop command is generated (step 606), and it is determined whether the inverter stop command is completed (step 607).

4-1-1-1-1. 수행이 완료되었으면 모든 카운트를 초기화 하고 무유량감지제어 단계를 초기화하고, 무유량운전속도를 설정된 최저운전속도로 초기화(단계608)하고,4-1-1-1-1. When the execution is completed, initialize all counts, initialize the flow rate detection control step, initialize the flow rate operation speed to the set minimum operation speed (step 608),

4-1-1-1-2.수행이 완료되지 않았으면 종료(단계609)하고,4-1-1-1-2.If the operation is not completed, terminate (step 609),

4-1-1-2. 카운트된 무유량판별지연이 설정된 무유량판별지연 미만이면 종료(단계609)하고4-1-1-2. If the counted flow rate discrimination delay is less than the set flow rate discrimination delay, the process ends (step 609).

4-1-2. 현재운전속도가 무유량운전속도 초과이면 종료(단계609)하고4-1-2. If the current operation speed exceeds the flow free operation speed, the process ends (step 609).

4-2. 토출압력이 설정압력 이하일 경우에는 모든 카운트를 초기화 하고 무유량감지제어 단계를 초기화하고, 무유량운전속도를 설정된 최저운전속도로 초기화(단계608)한다.
4-2. If the discharge pressure is less than or equal to the set pressure, all counts are initialized, the flow rate detection control step is initialized, and the flow rate operation speed is initialized to the set minimum operation speed (step 608).

도 11은 무유량감지제어 수행에 따라 압력 및 속도(회전수)의 변화 상태를 시간에 따라 표시한 실시예 1이다.FIG. 11 is a first embodiment in which the state of change of pressure and speed (rotational speed) is displayed over time according to the flow rate sensing control.

위의 그래프는 시간축에 따른 정지압력과 설정압력, 토출압력을 나타내고 아래의 그래프는 시간축에 따른 최대운전속도, 무유량운전속도, 최소운전속도를 나타내고 있다.The graph above shows the stop pressure, the set pressure and the discharge pressure along the time axis, and the graph below shows the maximum operation speed, flow-free operation speed and minimum operation speed along the time axis.

① : 무유량감지제어 단계 2의 수행을 통해 무유량감지주기 동안 토출압력이 설정압력을 유지하고 있으면 무유량감지제어 단계 3을 선언하고 설정압력을 정지압력으로 높여 변속펌프의 속도를 증가시킨다.①: If the discharge pressure maintains the set pressure during the no flow detection cycle by performing the no flow detection control step 2, declare the no flow detection control step 3 and increase the set pressure to the stop pressure to increase the speed of the transmission pump.

① ~ ② : 무유량감지제어 단계 3을 수행한다.① ~ ②: Run flow detection control step 3.

② : 토출압력이 변속펌프 속도증가 이내에 정지압력까지 도달하면 무유량감지제어 단계 4를 선언하고 설정압력을 원래의 설정압력으로 변경하여 변속펌프의 속도를 감소시킨다.②: If the discharge pressure reaches the stop pressure within the speed of the speed change pump, declare the no flow detection control step 4 and change the set pressure to the original setting pressure to reduce the speed of the speed change pump.

② ~ ③ : 토출압력의 변화가 없고, 변속펌프의 속도는 계속 감소하고 있는 구간이다.② ~ ③: There is no change in discharge pressure, and the speed of the transmission pump is continuously decreasing.

③ : 무유량감지제어 단계 2에서 설정압력과 토출압력이 같고, 카운트된 무유량감지주기와 설정된 무유량감지주기가 같은 경우에 무유량운전속도로 저장되었던 펌프운전속도 이하가 되면, 무유량판별지연 카운트를 시작한다.③: When the set pressure and discharge pressure are the same in the flow rate detection control step 2 and the counted flow rate detection cycle and the set flow rate detection cycle are the same, the flow rate discrimination becomes less than the pump operation speed stored at the flow rate operation speed. Start the delay count.

④ : 카운트된 무유량판별지연이 설정된 무유량판별지연을 만족하고, 그 동안 토출압력이 원래 설정압력보다 크게 유지되면 변속펌프를 정지시킨다.④: If the counted flow rate discrimination delay satisfies the set flow rate discrimination delay and the discharge pressure is maintained higher than the original set pressure during that time, the shift pump is stopped.

⑤ : 모든 펌프가 정지되어 있다가 토출압력이 설정압력보다 낮아져 시작압력이 되었을 경우에 새로운 펌프를 선택하여 변속펌프로 최소운전속도부터 운전시킨다.⑤: When all pumps are stopped and the discharge pressure is lower than the set pressure and the starting pressure is reached, select a new pump and operate it from the minimum operating speed with the shift pump.

⑤ ~ ⑥ : 토출압력이 설정압력을 유지하도록 변속펌프의 속도를 제어한다.
⑤ ~ ⑥: Control the speed of the transmission pump so that the discharge pressure maintains the set pressure.

도 12는 무유량감지제어 수행에 따른 압력 및 속도(회전수)의 변화 상태를 시간에 따라 표시한 실시예 2이다.12 is a second embodiment in which the state of change in pressure and speed (speed) according to the flow rate sensing control is displayed according to time.

⑦: 무유량감지제어 단계 2의 수행을 통해 무유량감지주기 동안 토출압력이 설정압력을 유지하고 있으면 무유량감지제어 단계 3을 선언하고 설정압력을 정지압력으로 높여 변속펌프의 속도를 증가시킨다.⑦: If the discharge pressure maintains the set pressure during the no flow detection cycle by performing the no flow detection control step 2, declare the no flow detection control step 3 and increase the set pressure to the stop pressure to increase the speed of the transmission pump.

⑦ ~ ⑧ : 무유량감지제어 단계 3을 수행한다.⑦ ~ ⑧: Perform no flow detection control step 3.

⑧ : 토출압력이 변속펌프 속도증가 이내에 정지압력까지 도달하면 무유량감지제어 단계 4를 선언하고 설정압력을 원래의 설정압력으로 변경하여 변속펌프의 속도를 감소시킨다.⑧: When the discharge pressure reaches the stop pressure within the speed of the speed change pump, declare the no flow detection control step 4 and change the set pressure to the original setting pressure to reduce the speed of the speed change pump.

⑧ ~ ⑨ : 변속펌프의 속도가 감소하는데 따라 토출압력이 감소하던 중에 무유량운전속도 이하가 되면 무유량판별지연을 카운트하고,⑧ ~ ⑨: If the discharge pressure decreases while the discharge pressure decreases as the speed of the shift pump decreases, the flow rate discrimination delay is counted.

⑨ ~ ⑩ : 카운트된 무유량판별지연이 설정된 무유량판별지연 이상이 되기 전에 토출압력이 설정압력 이하로 감소하면 실행중이던 무유량감지제어를 정지하고 관련된 카운트와 플래그를 모두 초기화 하고,⑨ ~ ⑩: If the discharge pressure decreases below the set pressure before the counted flow rate discrimination delay becomes more than the set flow rate discrimination delay, the running flow rate detection control is stopped and all related counts and flags are initialized.

⑩ : 무유량감지제어가 정지되고 원래의 펌프제어를 수행한다.
⑩: No flow detection control is stopped and original pump control is performed.

10: 부스터펌프 자동제어반(전기부품과 전자제어장치로 구성)
11: 본 발명의 무유량감지제어 기능을 포함한 부스터펌프시스템 자동제어알고리즘이 적용된 (전자)제어장치
12: 제어장치로부터 전송된 속도지령신호에 따라 변환된 속도를 갖는 전원을 펌프로 공급하는 변속장치
13: 제어장치로부터 전송된 펌프제어신호에 따라 펌프를 선택하는 전기제어장치(전자개폐기, MC)
20: 펌프(합류관, 밸브, 센서 등으로 구성)
21: 저수조로부터 물을 공급받는 흡입부
22: 사용자로 물을 공급하기 위한 토출부
23: 제어장치로 검출된 토출압력을 전송하기 위한 토출부에 설치된 압력센서10: Booster pump automatic control panel (consisting of electric parts and electronic control device)
11: (Electronic) control device to which the booster pump system automatic control algorithm including the flow rate detection control function of the present invention is applied
12: Transmission device for supplying power having a speed converted by the speed command signal transmitted from the control device to the pump
13: Electric control device (electronic switchgear, MC) which selects a pump according to the pump control signal transmitted from the control device
20: pump (consisting of conduit, valve, sensor, etc.)
21: suction part receiving water from the reservoir
22: discharge portion for supplying water to the user
23: pressure sensor installed in the discharge portion for transmitting the discharge pressure detected by the control device

Claims (4)

토출압력과 설정압력이 같고 한 대만의 변속펌프가 운전 중인지 확인하여 단계 1을 선언하는 무유량감지제어 단계 0,
무유량감지제어 단계가 1인지 판단하고 무유량감지제어를 위한 모든 카운트 및 플래그들을 초기화하고 단계 2를 선언하는 무유량감지제어 단계 1,
무유량감지제어 단계가 2인지 판단하고 단계 0의 상태가 설정된 무유량감지주기 동안 유지되는지 판단하여 단계 3을 선언하는 무유량감지제어 단계 2,
무유량감지제어 단계가 3인지 판단하고 실제로 무유량구간인지 판단하기 위해 정지압력만큼 펌프의 회전속도를 높여 토출압력을 증가시키고 정지압력에 도달하면 단계 4를 선언하는 무유량감지제어 단계 3,
무유량감지제어 단계가 4인지 판단하고 토출압력이 설정압력보다 높게 유지되면 물을 사용하지 않는 무유량구간인 것으로 판단하여 변속펌프를 정지시키고 무유량감지제어 기능을 종료하는 무유량감지제어 단계 4로 구성된 변속펌프를 포함하는 부스터펌프시스템의 무유량감지제어 방법
Zero flow detection control step 0, which declares step 1 by checking that the discharge pressure is equal to the set pressure and that a Taiwanese speed change pump is in operation.
Flow detection control step 1, which determines whether the flow detection control step is 1, initializes all counts and flags for the flow detection control, and declares step 2.
2, which detects whether the flow rate detection control step is 2 and whether the state of step 0 is maintained for the set flow rate detection period, and declares step 3.
To determine whether the flow-free detection control phase is 3 and to determine whether it is actually a flow-free section, increase the discharge pressure by increasing the rotational speed of the pump by the stop pressure, and the flow-free detection control phase 3, which declares step 4 when the stop pressure is reached,
It is judged that the flow rate detection control step is 4, and when the discharge pressure is maintained higher than the set pressure, it is determined that it is the flow rate section without using water, and the flow rate detection control step 4 which stops the shift pump and ends the flow rate detection control function 4 Flow rate detection control method of booster pump system including a variable speed pump
청구항 1에 있어서,
무유량감지제어 단계가 2인지 판단하고 단계 0의 상태가 설정된 무유량감지주기 동안 유지되는지 못한 경우에 대해 채터링감지지연을 카운트하고, 여기서 카운트된 채터링감지지연이 설정된 채터링감지지연을 초과한 경우에는 모든 카운트와 플래그를 초기화 하고 무유량감지제어를 중지하고, 반면에 카운트된 채터링감지지연이 설정된 채터링감지지연을 초과하지 않은 경우에는 계속해서 무유량감지제어를 수행하는 무유량감지제어 단계 2로 구성된 변속펌프를 포함하는 부스터펌프시스템의 무유량감지제어 방법
The method according to claim 1,
It is determined whether the flow rate detecting control step is 2, and the chattering detection delay is counted for the case where the state of step 0 is not maintained for the set flow rate detecting period, wherein the counted chattering detection delay exceeds the set chattering detection delay. In one case, it initializes all counts and flags and stops the flow-free sensing control. On the other hand, if the counted chattering sensing delay does not exceed the set chattering sensing delay, flow-free sensing continues to perform flow-free sensing control. Flow rate detection control method of the booster pump system including a shift pump consisting of the control step 2
청구항 1에 있어서,
무유량감지제어 단계가 3인지 판단하고 실제로 무유량구간인지 판단하기 위해 정지압력만큼 펌프의 회전속도를 높여 토출압력을 증가시키는데 토출압력이 정지압력 미만인 경우에 있어서,
카운트된 변속펌프 속도증가시간이 설정된 변속펌프 속도증가시간 이상이거나 펌프운전속도가 최대속도 이상이면 모든 카운트와 플래그를 초기화 하고 무유량감지제어를 중지하고,
반면에 카운트된 변속펌프 속도증가시간이 설정된 변속펌프 속도증가시간 미만이고 펌프운전속도가 최대속도 미만이고, 여기서 토출압력이 원래의 설정압력 이하이면 모든 카운트와 플래그를 초기화 하고 무유량감지제어를 중지하고, 반대로 토출압력이 원래의 설정압력 초과이면 무유량감지제어 단계 3을 계속 수행하는 단계를 포함하는 무유량감지제어 단계 3로 구성된 변속펌프를 포함하는 부스터펌프시스템의 무유량감지제어 방법
The method according to claim 1,
In order to determine whether the flow-free detection control step is 3 and to determine whether the flow-free section is actually a flow-free section, the discharge speed is increased by increasing the rotational speed of the pump by the stop pressure.
If the counted shift pump speed increase time is equal to or higher than the set shift pump speed increase time or the pump operation speed is higher than the maximum speed, all counts and flags are initialized and the flow rate detection control is stopped.
On the other hand, if the counted shift pump speed increase time is less than the set shift pump speed increase time and the pump operation speed is less than the maximum speed, and the discharge pressure is less than the original set pressure, all counts and flags are initialized and the flow rate detection control is stopped. On the contrary, if the discharge pressure exceeds the original set pressure, the flow rate detection control method of the booster pump system including the shift pump configured as the flow rate detection control step 3 including continuing to perform the flow rate detection control step 3.
청구항 1에 있어서,
무유량감지제어 단계가 4인지 판단하고 토출압력이 설정압력 이상으로 유지되면 현재운전속도가 무유량감지제어 단계 2에서 저장되었던 무유량운전속도 이하이면 무유량판별지연을 카운트하고,
카운트된 무유량판별지연이 설정된 무유량판별지연 이상이면 변속펌프를 정지시키고 무유량감지제어 기능을 종료하는 무유량감지제어 단계 4로 구성된 변속펌프를 포함하는 부스터펌프시스템의 무유량감지제어 방법

The method according to claim 1,
If it is judged that the flow rate detection control step is 4 and the discharge pressure is maintained above the set pressure, the flow rate discrimination delay is counted if the current operation speed is less than the flow rate operation speed stored in the flow rate detection control step 2,
The flow rate sensing control method of the booster pump system including the shift pump configured in the flow rate sensing control step 4 for stopping the shift pump and ending the flow rate sensing control function if the counted flow rate discrimination delay is equal to or greater than the set flow rate discriminating delay.

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