At present, in order to prevent the impact on the water consumption of urban residents, domestic and production pumps are not allowed to be directly installed on the municipal pipe network. In order to solve the problem that the water supply equipment can be connected in series to the municipal water supply pipe network without negative pressure, and does not affect the water consumption of other users, it is necessary to add a flow controller and a split cavity pressure regulator compensation tank between the pump inlet and the municipal pipe network, and the flow controller always monitors the pressure of the municipal pipe network. While ensuring that the municipal pipe network does not produce negative pressure, it can also make full use of the original pressure of the municipal pipe network. At this time, it is necessary to use the non-negative pressure water supply system.
When the tap water of the municipal pipeline enters the regulating tank at a certain pressure, the air in the regulating pressure compensation tank is discharged through the vacuum eliminator, and the vacuum eliminator automatically closes after the water is filled. When the tap water can meet the water pressure and water quantity requirements, the water supply equipment directly supplies water to the water pipe network through the bypass check valve; When the pressure of the tap water network can not meet the water requirements, the system will give a pump signal through the pressure sensor, or the pressure controller, the electric contact pressure meter to start the pump operation.
Pressure sensor in the non-negative pressure water supply equipment, variable frequency constant pressure water supply equipment is one of the main accessories, from the original remote pressure gauge to the pressure sensor, the previous remote pressure gauge not only makes the entire water supply system unstable, but also often need to be replaced, thereby increasing the cost of after-sales service, and the use of pressure sensor can not only solve the problem of unstable water supply, It is also not easy to damage, and at the same time, it also reduces after-sales costs.
Through the high sensitivity pressure switch or pressure sensor installed on the water supply network, the pressure change of the water supply network is detected when the water consumption changes, and the change signal is constantly transmitted to the microcomputer. According to different operating states, the compensation amount is dynamically controlled, so as to achieve dynamic pressure balance and ensure constant pressure of the water supply network to meet the needs of users.
In fact, the pressure sensor can be divided into: pressure sensor and pressure transmitter according to the output signal and whether the amplifier circuit is installed in the body. At the same time, according to whether it can measure corrosive media and adapt to harsh environments can be divided into: universal and isolated, according to the different signals are divided into current type pressure sensors: generally 4 to 20mA; There are also voltage signal type pressure sensors: 0 to 12V.
Xi'an Atech Sensor Co., Ltd. is a professional sensor manufacturer for the secondary water supply industry. Products are sold at home and abroad, has reached a long-term stable cooperative relationship with a number of water supply equipment suppliers. Our products cover non-negative pressure water supply equipment, variable frequency water supply equipment, constant pressure water supply equipment, secondary water supply equipment, single pump variable frequency water supply equipment, integrated intelligent pump room, urban water supply network pressure pump station and other applications, to meet the secondary water supply industry manufacturers for professional sensors waterproof and dustproof, anti-frequency interference applicable requirements. Our products have advanced technology, exquisite structure, reliable quality and strong environmental adaptability. Welcome to inquire and cooperate!
