KR101071558B1 - Auto air exhaust apparatus for pump system - Google Patents

Auto air exhaust apparatus for pump system Download PDF

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Publication number
KR101071558B1
KR101071558B1 KR1020100120143A KR20100120143A KR101071558B1 KR 101071558 B1 KR101071558 B1 KR 101071558B1 KR 1020100120143 A KR1020100120143 A KR 1020100120143A KR 20100120143 A KR20100120143 A KR 20100120143A KR 101071558 B1 KR101071558 B1 KR 101071558B1
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KR
South Korea
Prior art keywords
pump
water level
microcomputer
low water
controlling
Prior art date
Application number
KR1020100120143A
Other languages
Korean (ko)
Inventor
김택환
Original Assignee
화랑시스템(주)
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Publication date
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Priority to KR1020100120143A priority Critical patent/KR101071558B1/en
Application granted granted Critical
Publication of KR101071558B1 publication Critical patent/KR101071558B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/10—Other safety measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/06—Venting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/11—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
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/60—Fluid transfer

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

Abstract

The present invention relates to an automatic air discharge device for automatically returning a low water level measurement and a booster pump system in a low water level by controlling and controlling a motor and a solenoid valve using an inverter and a microcomputer.
The present invention for this purpose, the control panel 10 has a microprocessor (15) that is configured with a central processing unit (CPU) and a timer, and a plurality of inverters (11-13) for controlling the motor (30, 30 ', 30 ") Is installed, the solenoid valves 24-26 attached to the upper ends of the pump casings 20-22 are installed at the motors 30, 30 ′, 30 ″, and the pump casings 20-22 are suctioned. In the booster pump system configured to install the discharge pipe 50 with the valve 40 and the check valve 55,
When the magnitude of the output current is monitored in real time by monitoring the magnitude of the current output from the inverters 11 to 13, the pump is controlled and the air generated in the pipe and the pump is controlled by the solenoid valve 24-26. It is characterized by precisely controlling a series of processes from the diagnosis of the system to immediate system stop, action, and restart again by the microcomputer 15 by discharging through the system and restarting the system.

Description

AUTO AIR EXHAUST APPARATUS FOR PUMP SYSTEM}

The present invention relates to an automatic air discharge device of a booster pump system that completely removes air in a suction pipe and a pump by a solenoid valve, and more specifically, a low water level measurement and control by controlling and controlling a motor and a solenoid valve using an inverter and a microcomputer. The present invention relates to an automatic air discharge device for automatically recovering a booster pump system at a low water level.

In the prior art, the water level detection function of the pressure water supply system consists of a plurality of electrodes formed with different heights in sequence, and is installed in a pipe (water tank) as the water level detection function by the electrode, and the lowermost electrode is flooded by being connected to the power source. The remaining electrodes have a water level sensor that transmits its status to the controller of the upper system as the current flows through the water as it is submerged in turn, and is automatically operated by the controller to protect the pump by starting or stopping the pump. have.

However, the conventional water level detection system is limited in the accuracy that can detect the level of the pipe to be measured according to the number of electrodes, and it is impossible to maintain the liquid level of the fluid in the pipe when the pump is running. Therefore, there is a problem that it is impossible to determine the state of the low water level of the pump inlet pipe by the conventional system.

In addition, since the electrode is in direct contact with water and the current is conducted, impurities such as impurities stick to the tip of the electrode due to electrolysis, causing frequent use of cleaning, which hinders the normal operation of the water level detection circuit. There is a problem in terms of maintenance as well.

Most low water level detection methods using low water level detection by the discharge pressure and inverter output power of the prior art use low water level sensors, or when the discharge pressure does not increase over a predetermined low water level level for a certain period of time, the low water level is detected. .

In such a system, it is difficult to distinguish between a low water level sensor, that is, an alarm is generated because current does not flow normally in an electrode, or a discharge pressure does not increase because a discharge pipe of a pump is broken. In order to solve this problem in the booster pump system, the low water level detection is controlled by the inverter output power and the discharge pressure without depending on the low water sensor and the discharge pressure.

 In other words, the booster pump system is a pump system made by connecting two or more induction motors, and the booster pump system is widely used in apartment complexes, buildings, houses and baths. For example, water tanks are installed on the rooftop, water is stored in the water tank, and then used. When the water tank is installed on the rooftop due to the high rise of the building, the load is heavily applied to the building and the appearance is not beautiful. .

To improve this, the water tank and the pump are installed in the basement to pressurize upwards. At this time, the water pressure required for the building where the booster pump system is used is calculated and input to the controller attached to the booster pump system. It controls the current pressure to be the same as the set pressure through ID control.

An inverter is used to control the electric motor, and the inverter can change the 0 to 100% of the output by changing the three-phase frequency in a voltage / frequency (V / F) control scheme. Previously, inverters are attached as many as the number of motors to control PIDs in the controller.

This method compares whether the master inverter sums the output power of slave inverters according to the inverter control cycle and compares the discharge pressure to the set discharge pressure according to the inverter control cycle. Reset to the next control cycle.

If the set discharge pressure is not reached, increase the low water level holding time, and if the low water level is reached, set the low water level holding time to 0, stop the whole system, sound an alarm, and proceed to the next cycle.

Such a system has the advantage of being able to detect the low water level of the pump inlet accurately and quickly, but after the whole system is stopped, it is totally dependent on manpower to check the presence of the fluid in the suction pipe to remove the air and then The disadvantage is the need to run the pump manually.

This means that after the system is judged for failure and stopped for the safety of the system, the personnel are input to solve the problem, take appropriate measures to ensure that the system can operate normally, and then check whether the entire booster pump system is up and running again. Too much time and money can be wasted.

On the other hand, due to mechanical seal failure in the conventional multistage pump system, the pump mainly used in the booster pump system is a vertical multistage pump. The vertical multistage pump has a mechanical seal at the top of the pump. In addition, the suction and discharge pipes are provided at the lower end of the pump.

Therefore, if air is generated inside the pump, air that is less specific than water will continue to exist in the upper part of the pump casing where the mechanical seal is present unless air is artificially removed.

The mechanical seal generates heat during rotation, which is mostly made of carbon and ceramic. In the absence of water, the mechanical seal O-ring will melt, causing cracks in the carbon and ceramics that can lead to breakage.

The present invention has been invented in view of the above circumstances, so that the mechanical seal, which is relatively more susceptible to heat than other pump parts, can be protected through accurate and rapid detection of the low level of the suction pipe by checking the discharge pressure and output current. The purpose of the present invention is to provide an automatic air discharge device of a booster pump system capable of completely stopping the air in the suction pipe and the pump and restarting the system by a solenoid valve.

The present invention for achieving the above object, the control panel 10 has a central processing unit (CPU) and the microcomputer 15 is configured with a timer, and a plurality of inverters for controlling the motor (30, 30 ', 30 ") ( 11-13), the solenoid valve (24-26) attached to the upper end of the pump casing (20-22) is installed on the motor (30, 30 ', 30 "), the pump casing (20-22) In the booster pump system is configured such that the discharge pipe 50 with the suction valve 40 and the check valve 55 is installed,
When the magnitude of the output current is monitored in real time by monitoring the magnitude of the current output from the inverters 11 to 13, the pump is controlled and the air generated in the pipe and the pump is controlled by the solenoid valve 24-26. It is characterized by precisely controlling a series of processes from the diagnosis of the system to immediate system stop, action, and restart again by the microcomputer 15 by discharging through the system and restarting the system.

As described above, according to the present invention, after controlling the pump by monitoring the magnitude of the current output from the inverter in real time, the air generated in the pipe and the pump is discharged through the solenoid valve, and the system is restarted to detect the abnormality of the system. Micom can precisely control the sequence of steps from immediate system shutdown, actions, and restarts.

The present invention has the effect that can be operated as a faster and more reliable system through the automatic recovery function of the system and also the problem that the system was troubled depending on the manpower.

1 is a configuration diagram for explaining the automatic air discharge device of the booster pump system according to an embodiment of the present invention,
Figure 2 is a flow chart illustrating in detail the automatic air discharge device in the booster pump system of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram for explaining the automatic air discharge device of the booster pump system according to an embodiment of the present invention, the present invention using the inverter (11-13) and the microcomputer (15), the motor (30, 30 ', 30 ") and solenoid valves (24-26) to control and control the low air level and automatically return the booster pump system at low water level.

The control panel 10 is provided with a microcomputer 15 including a central processing unit (CPU) and a timer, and a plurality of inverters 11 to 13 for controlling the motors 30, 30 ', and 30 ". The motors 30, 30 ', 30 "are provided with solenoid valves 24-26 attached to the upper ends of the pump casings 20-22.

The pump casing 20-22 is provided with a discharge pipe 50 having a suction valve 40 and a check valve 55 attached thereto. The communication line between the microcomputer 15 of the control panel 10 and the inverters 11 to 13 transmits a control signal to the inverter and senses a current from the inverter. The inverters 11-13 of the control panel 10 supply electric power to the motors 30, 30 ′, 30 ″.

Therefore, the microcomputer 15 in the control panel 10 may give a control signal to the inverters 11 to 13 during operation of the booster pump system and obtain information of output power from the inverters 11 to 13 at regular intervals. If the output power increases more rapidly than the output power, the pump can be stopped and automatically recovered from the low water level according to a pre-programmed procedure.

The present invention requires a system stop by a program to check the discharge pressure and output current to protect mechanical seals that are relatively heat-sensitive compared to other pump components through accurate and rapid detection of low water level in the suction pipe. This allows the air in the suction line and pump to be completely removed and the system restarted.

Figure 2 is a flow chart illustrating in detail the automatic air discharge device in the booster pump system of the present invention.

When the booster pump system is in normal operation, if the present discharge pressure is lower than the set pressure, the flow advances to the next control cycle. Calculate the current output from the inverter. If the current I_out output from the current inverter is small compared to the low-level current value I_LL predefined by the manager, the control proceeds to the next control period, and otherwise returns to the aforementioned pressure comparison step.

Since the current output current I_out is smaller than the low level current value, it is regarded as the low level state first, and the duration of the low level state is counted through a variable called a timer on the microcomputer and the next cycle is performed.

If the current timer variable is greater than the low water level maintenance time (Timer_set) predefined by the administrator, it is determined as the low water level state and the process proceeds to the next cycle. If it is less than the low water level holding time, reset the timer variable to 0 and then return to the control cycle of the pressure comparison step.

Since a low water condition has occurred, the pump is stopped and the low water alarm history is recorded on the system and the next cycle is performed. Open the solenoid valve to remove air from the suction pipe and the pump casing through the command of microcomputer and proceed to the next cycle.

Increment one counter (OpenClose_cnt) to count the number of solenoid valve openings and closings and proceed to the next cycle. The pump runs weakly to remove the air in the pipes and the pump, waits the required time for a preset time by the manager (Delay), and then proceeds to the next cycle.

Close the solenoid valve through the command of microcomputer and move on to the next cycle. If the current (I_out) output from the current inverter by the pump is small compared with the low-level current value (I_LL) predefined by the administrator, it goes to the next control cycle. Otherwise, the solenoid valve open / close count (OpenClose_cnt) is initialized to 0. After returning to the pressure comparison cycle.

Since the system could not be recovered from the low water level by opening or closing the solenoid valve, compare the solenoid valve open / close count (OpenClose_cnt) with the solenoid valve MaxCnt set by the administrator. Return and attempt to return from the low water level by solenoid valve MaxCnt. If the solenoid valve MaxCnt is tried and no inverter output current in the normal range can be detected, shut down the system completely.

As described above, according to the present invention, in the booster pump system that uses the inverter and the microcomputer to control the rotation speed of the pump, the current generated from the inverter is monitored in real time to control the pump and generated in the pipe and the pump. Exhaust air through solenoid valves, restart the system, and precisely control the sequence of steps from system diagnosis to immediate system stop, action, and restart again by microcomputer to stop the system frequently by conventional incorrect low water sensor. You can solve the problem.

The present invention has the advantage that can be operated as a faster and more reliable system through the automatic recovery function of the system and also the problem that the system has been troubled depending on the manpower.

Although the technical concept of the automatic air discharge device of the booster pump system of the present invention has been described with reference to the drawings, this is illustrative of the best embodiment of the present invention and is not intended to limit the claims of the present invention.

It will be apparent to those skilled in the art that various modifications and imitations can be made without departing from the scope of the technical idea of the present invention.

10: control panel
11-13: Inverter
15: micom
20-22: Pump Casing
24-26: Solenoid Valve
30, 30 ', 30 ": motor
40: suction pipe
50: discharge piping

Claims (2)

The control panel 10 is provided with a microcomputer 15 including a central processing unit (CPU) and a timer, and a plurality of inverters (11-13) for controlling the motors (30, 30 ', 30 "). Solenoid valves 24-26 attached to the upper ends of the pump casings 20-22 are installed at 30, 30 ′, and 30 ″, and the pump casings 20-22 are provided with a suction valve 40 and a check. In the booster pump system configured to install the discharge pipe 50 with the valve 55,
When the magnitude of the output current is monitored in real time by monitoring the magnitude of the current output from the inverters 11 to 13, the pump is controlled and the air generated in the pipe and the pump is controlled by the solenoid valve 24-26. The air discharge device of the booster pump system, characterized in that the microcomputer (15) accurately controls a series of processes from the abnormal diagnosis of the system to the immediate system stop, action, and restart again. delete
KR1020100120143A 2010-11-30 2010-11-30 Auto air exhaust apparatus for pump system KR101071558B1 (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101250985B1 (en) 2012-12-05 2013-04-05 주식회사 남일 Booster pump
KR101408649B1 (en) * 2014-03-03 2014-06-17 주식회사 두크 Pump including Auto Air Ventilation
KR101438180B1 (en) 2014-02-25 2014-09-04 (주)우림펌프테크 A booster pump system with anti-idling means
KR101446498B1 (en) 2013-11-21 2014-10-07 윌로펌프 주식회사 Mehtod for controlling booster pump system
KR101531016B1 (en) * 2013-12-05 2015-06-23 주식회사 전진 Booster pump system
KR101593947B1 (en) * 2015-07-31 2016-02-15 화랑시스템(주) horizontal type booster pump including 5 way check valve with an air discharge function
WO2016076543A3 (en) * 2014-11-10 2017-04-27 ㈜휴앤스 Hydrogen water manufacturing system
KR20180104568A (en) * 2017-03-13 2018-09-21 로베르트 보쉬 게엠베하 Method for operating a lifting magnet pump, and computer program product
KR102165922B1 (en) 2020-02-13 2020-10-14 오정희 booster pump
KR102165536B1 (en) 2020-02-13 2020-10-14 오정희 booster pump system
KR102447211B1 (en) * 2022-03-18 2022-09-27 주식회사 대영파워펌프 Smart air venting device and method for booster pump

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100314663B1 (en) * 1999-12-18 2001-11-24 함서동 Apparatus For Suppling Water Using Air Pressure and inverter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100314663B1 (en) * 1999-12-18 2001-11-24 함서동 Apparatus For Suppling Water Using Air Pressure and inverter

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101250985B1 (en) 2012-12-05 2013-04-05 주식회사 남일 Booster pump
KR101446498B1 (en) 2013-11-21 2014-10-07 윌로펌프 주식회사 Mehtod for controlling booster pump system
KR101531016B1 (en) * 2013-12-05 2015-06-23 주식회사 전진 Booster pump system
KR101438180B1 (en) 2014-02-25 2014-09-04 (주)우림펌프테크 A booster pump system with anti-idling means
KR101408649B1 (en) * 2014-03-03 2014-06-17 주식회사 두크 Pump including Auto Air Ventilation
WO2016076543A3 (en) * 2014-11-10 2017-04-27 ㈜휴앤스 Hydrogen water manufacturing system
US10208386B2 (en) 2014-11-10 2019-02-19 Huanth Co., Ltd. Hydrogen water manufacturing system
KR101593947B1 (en) * 2015-07-31 2016-02-15 화랑시스템(주) horizontal type booster pump including 5 way check valve with an air discharge function
KR20180104568A (en) * 2017-03-13 2018-09-21 로베르트 보쉬 게엠베하 Method for operating a lifting magnet pump, and computer program product
KR102442828B1 (en) 2017-03-13 2022-09-14 로베르트 보쉬 게엠베하 Method for operating a lifting magnet pump, and computer program product
KR102165922B1 (en) 2020-02-13 2020-10-14 오정희 booster pump
KR102165536B1 (en) 2020-02-13 2020-10-14 오정희 booster pump system
KR102447211B1 (en) * 2022-03-18 2022-09-27 주식회사 대영파워펌프 Smart air venting device and method for booster pump

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