许多深井泵、深井潜水泵没有选用恒压控制，而是水泵直接供水，当用水负荷减少时(用户用水少)，管网压力会升高，常常引起阀门和接头等处爆裂，让费大量的水，也增加了维修成本，特别是很多农村采用的是增强塑料管，更加容易造成爆管的可能。

大发云Many deep-well pumps and deep-well submersible pumps do not use constant pressure control, but direct water supply by pumps. When the water load is reduced (users use less water), the pressure of the pipeline network will rise, which often causes bursts at valves and joints, which will cost a lot of water and increase maintenance costs. Especially in many rural areas, reinforced plastic pipes are used. Increased risk of tube explosion.

大发云恒压供水的方式有水塔供水和气压供水及变频恒压供水三种方式，变频恒压供水控制方式是投资比较少，也是省电的控制方式，没有水塔供水的占地问题和气压供水水泵频繁启停问题，实践检验，变频恒压供水控制方式是好的恒压控制方式。能够节省电能，降低供水成本。

There are three ways of constant pressure water supply: water tower water supply, air pressure water supply and variable frequency constant pressure water supply. Frequency conversion constant pressure water supply control mode is the least investment and the most energy-saving control mode. There are no problems of water tower water supply area and frequent start-up and shutdown of air pressure water supply pump. Practice proves that variable frequency constant pressure water supply control mode is the best one. Constant voltage control mode. It can save electricity and reduce the cost of water supply.

一、变频控制可以让深井泵在用水量小的时候，降低水泵的转速，从而消耗的电能也随之降低，深井泵是平方转矩负载，其功率和转速的三次方成正比，当转速降为额定转速的60%时，其功率是额定的21.6%，可节省78%的电能，此外，采用变频调速，可以提高功率因数，把无功的电能转化为有功的电能，实践证明，采用变频控制节电率至少在30%提高水泵的使用寿命。

1. Frequency conversion control can reduce the speed of deep well pump when the water consumption is small, and consequently reduce the energy consumption. The deep well pump is a square torque load. Its power is proportional to the cubic power of the speed. When the speed is reduced to 60% of the rated speed, its power is 21.6% of the rated speed, which can save 78% of the power. In addition, when the speed is reduced to 60% of the rated speed, it can save 78% of the power. The application of frequency conversion speed regulation can improve the power factor and convert reactive power into active power. Practice has proved that the use of frequency conversion control power saving rate is at least 30% to improve the service life of the pump.

二、变频器具有很强的保护功能，水泵过载、过流、失速、欠电压、过电压等引起水泵损坏的因素及时保护，不引起水泵烧坏。

大发云2. Frequency converter has strong protection function. The factors causing pump damage, such as pump overload, over-current, stall, under-voltage and over-voltage, are protected in time so as not to cause pump burnout.

变频器使水泵启动时软启动，即水泵由0转速按照加速时间，缓慢地增加转速，这样，减少了水泵启动时大电流的冲击，也减少了启动时水泵极联间迅速启动时的磨损。

Frequency converter makes the pump start soft, that is, the speed of the pump increases slowly according to the acceleration time from zero speed. This reduces the impact of large current when the pump starts, and also reduces the wear and tear when the pump poles start rapidly.

大发云水泵停机时变频器让水泵按照减速时间，逐步停机，这样，减少了因为突然停机，滞留在管网的水形成水锤，对水泵造成很大的损伤。

When the pump stops, the frequency converter lets the pump stop gradually according to the deceleration time, thus reducing the water hammer caused by the sudden shutdown and the water staying in the pipeline network, which causes great damage to the pump.

实践证明，采用变频恒压控制能使水泵的使用寿命提高一倍以上，也能有效地减少水泵的维护次数。

Practice has proved that frequency conversion constant pressure control can improve the service life of the pump more than double, and can effectively reduce the number of pump maintenance.

大发云三、智能化控制全自动运行：

大发云3. Intelligent control and full automatic operation:

大发云供水设备采用PID闭环调节，恒压精度高，水压波动小。具有过载、短路、过流等各种自动保护功能，设备运行稳定、可靠，方便使用和维护。具有缺水停泵、定时自动切换水泵运转等功能，可以实现无人职守。可建立远程监控系统，实时监控设备的运行情况。

大发云The water supply equipment adopts PID closed-loop regulation, which has high constant pressure precision and small fluctuation of water pressure. It has various automatic protection functions such as overload, short circuit, over current, etc. The equipment runs stably and reliably, and is convenient to use and maintain. The utility model has the functions of water shortage, water shutdown, timing automatic switching of water pump operation, etc., and can realize no duty. The remote monitoring system can be established to monitor the operation of the equipment in real time.