Application of energy metering system and remote water meter in water supply and drainage design

Abstract: The application information of energy metering system and remote water meter in water supply and drainage design is provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. Abstract: This paper introduces the application of the energy metering network management system and the remote water meter in the design of water supply and drainage, and how to select and install the primary and secondary meters that form the remote water meter. In recent years, the hot spot of the domestic real estate market has shifted to the development and construction of residences. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the application article details of energy metering system and remote water meter in water supply and drainage design. The application of the energy metering network management system and the remote water meter in the design of water supply and drainage and how to select and install the primary and secondary meters of the remote water meter are introduced. In recent years, the hot spot in the domestic real estate market has shifted to the development and construction of housing, and a large number of housing projects of different grades, such as the relief type, the well-off type, and the noble type, have been built. In these projects, the scientific, standardized and automated management of energy metering (water, electricity, gas) has been paid more and more attention by developers and designers. The application of Energy Metering Network Management System (ENMS) fundamentally solves the problem of low automation in the management of water, electricity, gas and other public utilities, and improves the work efficiency and management level of meter reading and charging. The following is a discussion on the selection and installation of the energy metering network management system and the remote water meter. 1. Energy metering system Energy metering (water, electricity, gas) networking management system is suitable for centralized management of water, electricity and gas meters in a region or city. The system can be composed of a single (water meter or electricity meter or gas meter) automatic The meter reading management system can also form a comprehensive two-meter (water, electricity meter) or three-meter (water, electricity, gas meter) management system, and the combination is more flexible. 1.1 System composition The networked management system is a four-level network composed of a management center computer, a transmission controller, a collection terminal and an energy meter, as shown in Figure 1. The management center computer is the management core of the system. It manages the entire system. Through the transmission controller under its jurisdiction, the data of any water meter, electricity meter or gas meter in the system can be called at any time, and the data can be processed. The device issues various commands. 1.2 The working principle of the system The various energy meters of the system are transmitted to the acquisition terminal in the form of pulse signals through the sensor. The acquisition terminal performs calculation and processing after receiving the pulse, and stores the result. The communication between the terminal and the transmission controller adopts the power carrier mode (that is, through the 220V power line). The terminal is usually in the receiving state. When receiving the operation instruction of the controller, it operates according to the instruction content, and sends the relevant data of the terminal to the transmission controller through the power line in the form of a carrier wave. The communication between the transmission controller and the terminal can use the RS485 bus method according to the actual situation of the cell or building, in addition to the power carrier mode, but it is more convenient to use the power carrier mode. Because of this method, as long as the connected power supply is in the same phase as the power supply of each terminal, rewiring is not required. It should be noted that when using the power carrier, the power factor of the power grid is required to be 0.85. The transmission controller periodically calls data through the built-in clock to the terminal under its jurisdiction and stores it. When the upper equipment——When the central computer calls the data, it packs the stored data and sends it. The communication mode between the transmission controller and the central computer can be a public network or a digital radio station. It should be pointed out here that when a property community does not need to transmit data to the upper-level management department, the interface of the transmission controller can be directly connected to the interface of the management center computer in the community, and the interface in Figure 1 is omitted. This link of public network or digital radio station. 2. In the energy metering network management system, the most closely related to the water supply and drainage profession is each household water meter and water meter terminal in Figure 1. The so-called remote water meter is composed of these two parts. We call the water meter installed on each user's pipeline the primary meter, and the water meter terminal installed on the wall of the public place as the secondary. The domestic LXWJ-16 remote water meter includes two parts: LXSY-15~40 primary meter and LWJ-16 secondary meter. The following takes this product as an example to discuss its selection and installation. 2.1 Selection and installation of a primary meter The appearance of a primary meter is similar to that of an ordinary water meter, but there is an additional signal line. The technical parameters of this water meter and the common LXS rotor water meter are shown in Table 1. It can be seen from Table 1 that the technical parameters of these two water meters are not much different, so it is completely possible to select a meter according to the principle of selecting an ordinary water meter, that is, according to the design second flow of the water meter, to determine the rated flow rate of the water meter. The diameter of the water meter, and the sensitivity of the water meter is checked at 6% to 8% of the average hourly flow. The primary meter can be installed on the user's pipeline like an ordinary household water meter, and the signal line connected to the secondary meter can be buried or exposed.

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