Variable frequency constant pressure water supply equipment
The overall summary
Variable frequency constant pressure water supply equipment is an intelligent secondary water supply equipment with high efficiency, energy saving and clean. According to the change of water consumption and water pressure of the pipe network, the equipment can implement stepless speed regulation through microcomputer detection, calculation and feedback of the pipe network to keep the water pressure constant so as to meet the water demand. Compared with the traditional water tower, high water tank, air pressure type and other water supply equipment, it has significant advantages in water quality, construction cost, economy of operation, reliability of system and intelligence degree. In recent years, it has been used in a variety of secondary water supply systems, spraying irrigation and industrial and agricultural production booster equipment.
Applications
Variable-frequency and constant-pressure water supply equipment is generally used in combination with the pool (water tank), which is recommended for the following occasions when municipal water supply is insufficient or unstable or even without tap water supply:
1. Various buildings, such as residential areas, villas, hospitals, schools, hotels, hotels, restaurants, hotels, sports stadiums, golf courses, airports, military, factory dormitories and other occasions for daily life water pressurization.
2. Upgrade and energy-saving renovation of the original old water supply system (such as water supply of tank or tower, buildings with pneumatic water supply, etc.).
3. Various cold and hot water circulation systems, such as hotels, hotels, hotels, schools or factory dormitories.
4. Production and construction, such as factory production and processing, washing device, food and beverage processing, construction site and other water pressurization.
5, irrigation spray: such as parks, water parks, farms, orchards and other occasions water supply.
Table of selection parameters (for reference only)
Model | Flow | Water supply head | Pump model | Number of pumps | Pump power | Specification of steady flow tank | Number of reference users |
DAHP8(15~178)/(0.37~4.0)/2 | 8 | 15~178 | CDL4-(2~22) | 2 | 0.37~4.0 | 600×1.3 | 25 |
DAHP16(18~186)/(0.75~7.5)/2 | 16 | 18~186 | CDL8-(2~20) | 2 | 0.75~7.5 | 600×1.3 | 80 |
DAHP24(20~183)/(1.5~11)/2 | 24 | 20~183 | CDL12-(2~18) | 2 | 1.5~11 | 800×1.5 | 150 |
DAHP32(22~189)/(2.2~15)/2 | 32 | 22~189 | CDL16-(2~16) | 2 | 2.2~15 | 800×1.5 | 220 |
DAHP40(23~202)/(2.2~18.5)/2 | 40 | 23~202 | CDL20-(2~17) | 2 | 2.2~18.5 | 800×1.5 | 260 |
DAHP64(27~196)/(4.0~30)/2 | 64 | 27~196 | CDL32-(20~140) | 2 | 4.0~30 | 800×1.5 | 500 |
DAHP84(41~259)/(7.5~45)/2 | 84 | 41~259 | CDL42-(20·130) | 2 | 7.5~45 | 1000×1.8 | 600 |
DAHP130(26~161)/(7.5~45)/2 | 130 | 26~161 | CDL65-(20~81) | 2 | 7.5~45 | 1200×2.0 | 1200 |
DAHP170(20~134)/(7.5~45)/2 | 170 | 20~134 | CDL85-(10~60) | 2 | 7.5~45 | 1200×2.0 | 1600 |
DAHP12(15~178)/(0.37~4.0)/3 | 12 | 15~178 | CDL4-(2~22) | 3 | 0.37~4.0 | 600×1.3 | 50 |
DAHP24(18~186)/(0.75~7.5)/3 | 24 | 18~186 | CDL8-(2~20) | 3 | 0.75~7.5 | 800×1.5 | 150 |
DAHP36(20~183)/(1.5~11)/3 | 36 | 20~183 | CDL12-(2~22) | 3 | 1.5~11 | 800×1.5 | 220 |
DAHP48(22~189)/(2.2~15)/3 | 48 | 22~189 | CDL16-(2~18) | 3 | 2.2~15 | 800×1.5 | 300 |
DAHP60(23~202)/(2.2~18.5)/3 | 60 | 23~202 | CDL20-(2~17) | 3 | 2.2~18.5 | 1000×1.8 | 500 |
DAHP96/(27~196)/(4.0~30)/3 | 96 | 27~196 | CDL32-(20~140) | 3 | 4.0~30 | 1000×1.8 | 900 |
DAHP126/(41~259)/(7.5~45)/3) | 126 | 41~259 | CDL42-(20~130) | 3 | 7.5~45 | 1200×2.0 | 1200 |
DAHP195/(26~161)/(7.5~45)/3 | 195 | 26~161 | CDL65-(20~80) | 3 | 7.5~45 | 1200×2.0 | 1600 |
DAHP255/(20~134)/(7.5~45)/3 | 255 | 20~134 | CDL85-(10~60) | 3 | 7.5~45 | 1400×2.5 | 2200 |
1. This table is for customer reference only. Specific parameters (flow, head, steady flow tank specifications) can be determined separately according to the actual situation of the local inlet pipe network, the user's water use or the site environment.
2, municipal water supply can be more stable occasions can not be equipped with a regulator tank, for pressure accuracy requirements of the occasion should be equipped with a regulator tank, the regulator tank generally need to be combined with the better effect of the pump.
3. Direct-drive automatic vacuum eliminator and liquid level controller are adapted with the steady flow regulator tank.
4. The number of reference households in the table is calculated according to the standard of water for ordinary residential areas, and the water supply for luxury residential areas, office buildings, shopping malls, hotels, hotels, hotels and other occasions shall be calculated separately.
5. The installation size of the equipment is not fixed, and can be adjusted flexibly according to the size of the user's pump room.
In order not to affect the service life of the product and reduce its performance, it is necessary to choose the correct installation place, and pay attention to the installation direction or the surrounding space.
Installation of equipment and related piping
1. The equipment should be installed indoors or in sheltered outdoor situations, with ambient temperature between 5 ° C and 40 ° C, relative humidity less than 90%, good ventilation, no flammable, explosive or corrosive gases or liquids around, and site altitude not higher than 2000 meters.
2. The installation of matching pumps for water supply equipment shall be carried out in accordance with the installation and operation instructions provided by the manufacturer. The peripheral pipes (water pipes or water outlet pipes) connected with the jellyfish pipes shall be arranged in strict accordance with the size and specifications attached to the jellyfish pipes, and the inner diameter of the peripheral pipes shall be ≥ the inner diameter of the jellyfish pipes.
3. Schematic diagram of equipment layout and installation or relevant national standards. If there are design drawings, construction must be carried out in strict accordance with the drawings.
4, the equipment should be self-irrigation water absorption, non-self-irrigation must have a reliable water diversion guarantee.
5, if the equipment installed in the board room, it is recommended to use shock absorption device, otherwise you will bring noise or vibration.
Installation of frequency conversion control system
The variable frequency control cabinet of this product has the corresponding weight according to the different power, it must adopt the appropriate hoisting way when handling, one side drop or collision causes partial component damage. Meanwhile, attention should also be paid to the following matters:
1. The surrounding environment has a great impact on the control system. Therefore, it is necessary to avoid places with direct sunlight, high temperature and humidity during installation. Relative humidity is less than 90% and condensation of water droplets/frost is not allowed.
2. The installation site should avoid oil mist, flammable and explosive gases and liquids, cotton dust, etc.
3. If floor-to-ceiling control cabinet is used, the base must be equipped and the distance between the base of control cabinet and the ground shall be no less than 10cm; If using hanging wall type installation, must ensure that the suspension device strength is enough, and the wall must not be too damp.
4. When wiring, it is strictly prohibited that any metal objects such as bits and pieces of wires and screws fall into the control cabinet. Otherwise, it is easy to cause the control system to appear the obstacle, the serious consequence of setting damage by wrong action.
5. As the frequency conversion control system is equipped with a frequency converter, the input and output loop of the control system contains high-frequency components, which may bring electromagnetic wave obstacles to the use of communication equipment near the control cabinet. At this time, radio noise filter or noise filter propagated can be installed to reduce interference.
