Multiple Pressure Booster Systems With Variable Speed Controller Type BL
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1 Multiple Pressure Booster Systems With Variable Speed Controller Type BL General Characteristics - Single or multistage pumps - Horizontal or vertical mounting - Total head 30m ~ 250m - Material construction: Cast Iron or Stainless Steel - Sealing with mechanical seal - Single stage electric motor (230V / 50 Hz) up to 2.4kw - Three phase electric motor (400V/440V 50 Hz /60 Hz) - Pressure vessel size upon application - Common collection suction discharge or calculated diameter - Cast Iron or Stainless Steel Collection Applications Technical Data - High rise buildings - Liquid Temperature: 0 ~ 70º C - Offices - Ambient Temperature: Max. 40º C - Schools - Irrigation systems - Industrial production - Municipal supply systems - Agriculture 1
2 General This variable speed controlled booster system is a sophisticated system, composed latest technology with variable speed control cabinet and more than two sets parallel pumps. It can be automatically adjust to fulfill the requirement constant pressure, variable flow water supply. The pressure the water supply pipe network keeps constant and the whole water supply system always keeps the best state high efficiency and energy saving. There are two types water supply, one is by and the other is by pressure. Water supply by can automatically adjust the rotating speed one pump or start/stop pumps, which is the best way to keep the pipelines pressure constant, it is easy to operate. Frequency Conversion Control Applications Resident water for living: such as high-rise building, resident community etc. Public place: such as hospital, school, airport, gymnasium etc. Commercial building: such as hotel, fice building, departmental store, large scale sauna etc. Irrigation: such as park, amusement park, orchard, farm etc. Industrial production: such as manufacturing, washing device, food industry etc. Advantages Solve the problem low hydraulic pressure - The booster system keeps The water pressure stable in the whole building. Avoid water pollution caused by ro tank - Replace the traditional ro tank water supply way, eliminate the source water pollution. Reduce the construction cost and enlarge the space Keep the pressure pipe network constant by adjusting the rotational speed the water pump. When the pressure inspected at the outlet pipe the system is smaller than the start pressure value the water pump, it is able to automatically adjust the rotational speed the water pump to keep the outlet pressure constant. In case the pump is operated at the rotational speed power while the pressure cannot reach setting pressure, the system will start P2, P3 pump in turn. With the reduction water consumption, the outlet pressure increases, and the rotational speed the water pump goes down gradually. If the rotational speed the water pump reduces to the lowest speed set by the system, the system will stop the operation the water pump in the turn P3, P2, and P1. Air Pressure Control - Eliminate traditional ro tank, reduce the stress for the building, structure is simple and lower the construction cost. Save power, less space - Compared with common water supply system, it may save more than 30% electric energy. This system covers less floor area, its installation is simpler and construction period is shorter. Characteristics Control Mode Controller by mode Controlled by air pressure mode - Keep the water pressure constant through the change the rotational speed the water pump Characteristics - Control the pressure by the pressure tank and pressure switch Characteristics - Higher cost than common system - Lower cost - Stable supply water pressure - Larger deviation water supply - Electricity saving and low pressure operation cost - Long life water pump and motor - Simple control mode and convenient maintenance - Without the phenomenon water hammer, stable operation - Short life water pump and motor In case the pressure the pipe network is larger than that start setting value, the pressure tank connected with outlet pipeline supplies water. In case the pressure the pipe network is equal to that start setting value, start the pump. When the pressure the pipe network reaches stop pressure during operation, stop the operation the water pump. After the pump starts, when the pressure pipe network exceeds the start pressure, not reaching the stop pressure, the water pump continues operating. After the water pump is operated at full speed, when the pressure pipe network has not reached the start pressure, the spare water pump start. 2
3 Moving Control Type Controller Constant Pressure and Frequency Conversion - Self developed moving control type water supply equipment constant pressure and can save 3 to 7% electric energy, compared with former water supply constant pressure and. - This product is especially applicable to the sites large power, large variation flow and start. The system has high operation efficiency and obvious electricity saving effect. 1. Moving Mode Frequency Converter Control One set converter plays the effect o f many sets converter and saves electric power and start pump stly. The start current spare pump is 200 to 300% rating current. Increase water consumption 0% 33% 66% Increase water consumption 100% 66% 33% 2. Stationary Mode Frequency Converter Control The converter control is fixed on one pump. When the supplementary pump starts, the start current will be too large and the fluctuation the pressure is large. The start current the supplementary pump is 500 to 600% rated current. Increase water consumption 0% 33% Increase water consumption 100% 66% 66% 33% The difference between moving mode and alternate operation mode converter control Alternate operation is the fundamental function water supply constant pressure and. After stop, when all water pumps restart, the initial started pump is operated by control, and it is major pump. Alternatively starting the major pump every time or within any setting time shall prevent certain pump from starting Alternate operation At the time initial start At the time restart At the time restart
4 O peration Performance Test Curve Control System Frequency Converter (50 Hz) Keep constant pressure by virtue intelligent controller under the situation extreme change flow. It is observed that the water supply system has the best performance to supply water Performance Test: Variable Speed Controlled Booster System Model: 3BL10-6 Capacity: 200 L/min x 68 x 3 sets Capacity Pressure Tank: 100L Control Mode: Frequency and constant pressure Start Mode: Direct Test Time: 8 minutes Test Curve for the variable speed controlled booster system 4
5 Diaphragm Type Pressure Tank Selection Pressure Tank The capacity the pressure is selected according to the flow pump, delivery head and start. The pressure level the pressure tank is selected according to the system pressure. 1. Calculation effective capacity (Vesp) Vesp = 16.5 x Q/n Q : Flow pump (LPM) n : Start (Times/h) Motor Power (HP) Below 5HP 7.5 ~ ~ ~ 75 Start Frequency (Times/h) Below 30 Below 20 Below 12 Below 8 2. Calculate the effective capacity coefficient (Z) based on the features pump's start and stop Z = Pi Pf Z (Effective flow coefficient) = the ratio occupying coefficient effective capacity for pressure tank under the condition assigned start, stop pressure pump Pi (Start Pressure Pump) = Actual Head + Pipe Loss + System Required Pressure Pf (Stop pressure pump) = Generally, (Pi + 1 ~ 2 kg/cm²) 3. Calculate the Capacity Pressure Tank VT from VESP al situation the system in case without pressure tank VT = VESP / Z Working Principle Pressure Tank At the initial operation the pump, fill water in the pressure tank. After it reach setting pressure with the increasing the pressure, the water pump stop. For initial water consumption, the water is supplied by the pressure tank. With the gradual reduction the internal pressure the pressure tank, the water is supplied by the. When the supply volume is small or stopping water consumption, the water pump continues filling the water in the pressure tank. It will stop until it reached setting pressure. Water is non-compressive fluid so the pressure will change rapidly when little water flows into or out. For the pressurization water supply, without pressure tank or small capacity, the change water consumption volume will start the water pump frequently and result in the great increase fault rate for pressure controller, relay, contactor, etc. and large damage and loss for the pump and motor, lowering the reliability. 5
6 Variable Speed Controlled Booster System Definition Model Example: 3 pumps including a small flow pump Note: Standard pressure the pressure tank is 10 bars. It shall be remarked for more than 10 bars when ordering. O perating Environment Control Mode Frequency Conversion Main Features Installation Site Indoor Environment Temperature 5º C to 40º C High quality intelligent computer control Conveying Liquid Clean Water Liquid Temperature 0º C to 70º C Special purpose, self-developed, varied functions, precise control sophisticated level, world leading standard. Extreme Service Pressure (Suction Pressure + Head Pump at Shutf 20 kg/cm² Point Energy Saving System Minimum Suction Pressure 0.2 kg/cm² The system is able to adjust the rotational speed and start/stop pumps in accordance with required water consumption volume, saving electric energy more than 30%. Allowable Suction Pressure Pump Combined Sets Water Pumps Restricted by maximu m use pressure Vertical / Horizontal Multistage Centrifugal Pump 2 to 6 Sets Keep Constant Pressure Power Supply 3 Phase x 230/415V x 50 Hz In case rapid change water consumption volume, the outlet pressure can keep stable to provide the Suction Pipe/ Output Pipe Stainless Steel Pipe consumer with comfortable water supply environment. Sketch Drawing Variable Speed Controlled Booster Made High Grade Material Water pump, main pipeline and accessories are made stainless steel to provide clean water quality. Customer Centered Product Design Standardized design may guarantee timely delivery. LCD Manual to facilitate consumer's use. 6
7 Components Drawing Variable Speed Controlled Booster System 7
8 Control Panel (Special for Variable Speed Controlled Booster System) Main Features Control Cabinet Self-researched and developed sophisticated technical product (controller) by mature technology and abundant experience is applicable to moving mode converter control. Precisely control the constancy water supply in accordance with change water consumption. The LCD manual for easy operation. The interface remote control is available. Performance Routine Product Item Mode Display Frequency Converter Pressure Sensor Remote Control Please contact us for special requirement Type Automatic manual LCD 1 Hp to 60 Hp (50 Hz or 60 Hz) 2 Lines, 4 to 20 ma, 0 to 25 Bar RS-232C /RS-485, Open system option Major Control Function Major Function Moving mode converter control LCD Screen LCD Display Selection operation interface Latest VSD control Running pump in turn Prevent from running without water Run through there is failed pump Adhesion prevention Over current motor prevention Overheat motor prevention Abnormal high pressure prevention Regular operation Self diagnosed operation High pressure alarm Low pressure alarm Deviation adjustment display Record and storage operation content Record and storage alarm content Emergency measure Alternate operation Combined operation in parallel connection Content Select moving mode or stationary mode converter control in the manual Display various information by wide screen LCD manual Simple operation Manual option English, Chinese, Korean Latest high performance control system Run or stop pump in turn The pump stop operation and the system gives and alarm when the inlet pipe is short water When the pump breaks down, the system will automatically start the next normal pump to operate. The system is capable test run the pump periodically to prevent the adhesion the pump due to long term stop. Prevent the current the motor from exceeding the setting value when starting Automatically stop the pump by the temperature switch on the motor Prevent abnormal rise pressure by pressure sensor Set operation time according to requirements and save energy Real time monitoring function may diagnose various faults Automatically stop the pump and give an alarm when exceeding setting pressure and time Give an alarm when the all pumps operates and cannot reach setting value Adjustable when the operation pressure LCD differs fro m indicated pressure value pressure gauge Record and store various operation situations display and store various alarm contents Able to shift to manual control when the control fails After running some time, other pumps will replace main pump to run, which will make pump run evenly Maximum 6 sets pump connected in parallel 8
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