[Supply Nanchang negative frequency of water supply equipment, tank pump integration, I'm sorry is a sincere, it does not matter is a kind of grace] (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) national toll-free ordering phone :400-705-5198 [Nanchang no negative frequency of water supply equipment] 18973140676 (Ms Kwok) [Nanchang negative frequency of water supply equipment] QQ: 1090657120 [Nanchang no negative frequency of water supply equipment] Tel: 0731 . -88,673,180 【Nanchang no negative frequency of water supply equipment] Fax 0731 -88,616,480 Nanchang negative frequency of water supply equipment】 URL: www.tdgongshui.com salesroom Sales: Changsha Yuhua Electrical Market Area D: Changsha Furong District, the people of the East, Road 111-115 Tung Tak site: Liuyang, Wing Industrial Park, the 287-300 number Nanchang no negative pressure frequency conversion water supply equipment introduced in recent years, with the frequency control technology has become more sophisticated, its remarkable energy-saving effect of stable and reliable control mode , has been widely used in water supply systems. Variable speed, constant pressure water supply system of pump motor implement microcomputer detection, computation, based on water consumption and water pressure changes by automatically changing the pump speed to maintain a constant pressure to meet the water requirements, is the most advanced energy-saving water supply system . Traditional water tower, high water tank, pressure tank water supply way of comparison, both investment and running economy, system stability, reliability, and degree of automation advantages: (1) energy efficient. Constant pressure water supply, compared with the traditional way of water supply, energy saving of 30% -60%. (2) small footprint, less investment and high efficiency. (3) configuration flexibility, high degree of automation, full-featured, flexible and reliable. (4) reasonable run, due to the decline in average speed of the day, the average shaft torque and wear reduction will greatly improve the life of the pump. Soft stop and soft on the water pump (5), and eliminates water hammer effect (water hammer effect: direct starting and stopping, liquid kinetic energy dramatically larger, leading to a great impact on the pipeline network, there is a great destructive). Remote pressure gauge (6) is simple, saves time and effort in the pump outlet pipe pressure signal is passed to the inverter, the requirements of the root system of water supply pressure, an outlet pressure settings stored in the drive, when the system water consumption increases, pump outlet pressure drops below the set value, inverter frequency gradually increased to accelerate the speed of variable frequency pump, pump outlet pressure rises, reaches a set value, the inverter frequency will stop increasing. If the frequency is increased to power frequency (50HZ), the pump outlet pressure is still lower than the set value, the inverter will be issued plus pump instruction, the first pump frequency operation, the start of the second pump frequency. And the inverter output frequency value is set to 30HZ, by 30HZ rise again, until the outlet pressure is equal to the set value. If the system water consumption is reduced, the pump outlet pressure will rise when the outlet pressure is higher than the set value, the frequency of the inverter is gradually reduced, so that, the pump outlet pressure will drop, reaches the set value, the inverter The frequency stops declining. Frequency down to 30HZ pump outlet pressure is still higher than the set value, the inverter will be issued less pump instruction, then the inverter frequency from 30HZ rise again, until the outlet pressure is equal to the set value. Nanchang no negative pressure frequency conversion water supply equipment under normal operating conditions), the working temperature :0-40 ℃. 2) Power supply: AC380V ± 20V, frequency 50HZ. 3), the atmospheric relative humidity: ≤ 90%. 4), the power supply system must be equipped with good lightning protection facilities. 5), the location of system operation should non-conductive or explosive dust, gases or vapors of non-corrosive metal or destroy insulation. 6), the control room should be prevented by strong electromagnetic interference, electromagnetic interference strong need additional shielding device. 7), the control room must ensure good ventilation, rain, dust and sanitation. 8), the control room by the vibration amplitude of <0.5mm, vibration frequency <10HZ. 9), the control cabinet must be grounded before use, grounding resistance ≤ 4 in Europe. , Nanchang no negative pressure frequency conversion water supply equipment and technology indicators), pressure setting range ≤ arbitrarily set the pumps rated head. 2), the constant voltage control accuracy ≤ ± 0.02Mpa. 3), flow regulator the range ≤ pumps rated flow. 4), the lack of phase action time ≤ 3S. 5), the lack of water movement time ≤ 3S. Nanchang no negative frequency of water supply equipment Scope ******* a various types of water plants, water supply stations. ******* B. Industrial and civil life, production, fire water system. ****** C. Guesthouse of public facilities, the hotel's domestic hot water, air conditioning and water systems. ******** D. Oilfield pipelines, pump stations constant pressure conveying systems and factories, mines fan wind pressure regulation system. ****** E hot water boiler at constant pressure and the constant pressure of the hot water piping system. Nanchang no negative pressure frequency conversion water supply equipment installation instructions. Equipment requirements correct to be installed with the system, pumping station shall not be less than 0 degrees Celsius temperature no higher than 40 degrees Celsius, the device should be above the ground, 50-100mm, left gutter various pumps should be separate suction pipe ground pool plus gate valve, for easy maintenance. 2. Install as little as possible with the elbow, in order to reduce unnecessary losses. The equipment factory technicians debug after delivery of specialized management staff responsible for special fire-fighting equipment, must customize a strict management system, in order to reach a fire to start immediately. Nanchang no negative pressure frequency conversion water supply equipment Overview JBH series Nanchang negative frequency of water supply equipment system is composed by the latest performance PID frequency conversion control cabinet and 2 more pumps in parallel tip pressurized water supply equipment, able to automatically adjust to meet the user's constant pressure variable water supply requirements. Pressure remains constant water supply network, the entire water supply system is always the best energy efficient state. Water supply mode frequency of water supply and pressure of water supply two types of frequency of water supply is automatically adjust the rotational speed of a pump or multiple input / exit run pumps the water supply pipe network pressure to maintain a constant ideal water supply, and simple to operate. No negative pressure frequency conversion water supply equipment features in Nanchang Nanchang no negative frequency of water supply equipment to solve the problem of low water pressure constant pressure Nanchang negative frequency of water supply equipment makes the whole building house water supply to keep the pressure constant. Nanchang no negative frequency of water supply equipment to avoid water pollution caused by the use of roof water tanks to replace traditional roof tank water supply, eliminating the source of water pollution. Nanchang negative frequency of water supply equipment to reduce the construction cost, increase the space area of ??to cancel traditional roof tank, so the building by the force decreases, simple structure, the lower the cost. Nanchang no negative pressure frequency conversion water supply equipment to save energy, narrow area than saving 30% of the general water supply equipment, the device is a small footprint, simple installation, shorten the construction period. Nanchang no negative frequency of water supply equipment of high quality smart open computer-controlled special self-developed, with diverse functions, to provide precise control of the state-of-the-art level, has reached world advanced level. Nanchang no negative frequency of water supply equipment uses? Irrigation: such as parks, playgrounds, orchards, farms, etc.? Manufacturing industries: manufacturing, washing devices, food industry, factory? Residents living water: such as high-rise buildings, residential areas, villas the? public places: such as hospitals, schools, stadiums, golf courses, airports? commercial buildings: such as hotels, office buildings, department stores, large sauna Nanchang no negative pressure frequency conversion water supply equipment working conditions ☆ transmission medium: hot and cold clean, non- flammable and liquid without solid particles or fibers. ☆ liquid temperature: ambient temperature -15 o C to +70 o C hot water +70 o C to +120 o C ☆ surroundings: no drop of water, steam, no floating dust and metal particles places. Sunlight, high temperature and severe fallout establishments. Non-corrosive, flammable gas and liquid spaces. ☆ no vibration, easy maintenance checks of the workplace. ☆ ambient temperature: the highest +45 o C and ventilated. Nanchang no negative frequency of water supply device, make full use of the original water pipe network pressure energy in the case of the same water supply needs, you can use the power of a relatively small pumps and control equipment, the same time the night small flow of water in the case of the use of tap water pressure direct water supply without having to start the water pump. Compared to traditional with a pool of water supply equipment can save a lot of energy running costs and investment costs. Nanchang negative frequency of water supply equipment is directly connected to the water pump and the water pipe network, pressure regulator tank as pumps the influent water storage device using vacuum to eliminate eliminate the negative pressure within the pipe network, making full use of the water pipe network is directly connected to tank pressure regulator eliminator vacuum to eliminate the negative pressure within the pipe network, and take full advantage of the original pressure of the water pipe network based on secondary pressurized water supply, the pump inlet water storage device equipment to achieve both the purpose of the increase (and did not affect the other users of the water pipe network) and savings built pool tank cast times, to ensure that the water quality of the pipe network at the same time (no secondary pollution), but also make full use of the pipe network The original water pressure, the energy saving effect is extremely significant, up to 50% or more. Automatic intelligent control the VVVF life feed pump, with a variety of protection and control functions, and can achieve true unattended. Nanchang no negative frequency of water supply equipment advantage of a starting balance, starting current may be limited to less than the rated current, thus avoiding the starting grid impact; reduced, because the average speed of the pump, and thus prolong the pumps and valves The service life; c can be eliminated when starting and stopping water hammer effect; Generally speaking, when a motor inverter control, simply with the motor capacity and the actual motor capacity that matches the inverter with . Inverter with inverter control two motors simultaneously, the principle motor capacity should be equal to the sum of the two motor capacity. However, if the water than in the peak load the two pumps full speed water supply is a lot of difference, it may be considered appropriate to reduce the capacity of the inverter, it should be noted that there is enough capacity. Although the pumps running at low speed, the motor current is small. However, frequent changes in water consumption, the motor will be in frequent liter, the spin-down state, liters, the current deceleration slightly more than the rated current of the motor, causing the motor to overheat. Thus, the thermal protection of the motor is required. Reasons for the frequent acceleration and deceleration accumulated temperature rise, the inverter within the electronic thermal protection function is difficult to play a protective role, so should the thermal relay for motor thermal protection. Aspects of the main functions of the preset, the highest frequency to the nominal frequency of the motor for a maximum operating frequency of the inverter. Liter, spin-down time in case of PID regulator or spin-down time should be set short, so as not to affect the dynamic response of the decision process by the PID regulator. Such as an inverter PID regulator, as long as it is set at a preset time the PID function effectively, set the speed and spin-down time will automatically lapse. (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←) (← _ ←)