CN116043958A - High-efficiency energy-saving building water supply system - Google Patents

Abstract

The invention discloses a high-efficiency energy-saving building water supply system which comprises a pressure supplementing tank body, a steady flow tank body, a pressure stabilizing tank body, a water tank, a pump room unit, a pressure sensor, a flow sensor, a control cabinet, a permanent magnet synchronous motor, a PC end, a compensation tank, a pressure maintaining tank, a water pump and a frequency converter. Municipal pipe network directly supplies water to low-level users, and high-efficiency water supply to users is achieved. The water supply of high-rise users adopts full frequency conversion constant pressure technology to realize secondary water supply through the water pump, and the business turn over water end of municipal pipe network links to each other with the water tank, and the water tank passes through pump house unit and supplies water to high-rise users. In the process of supplying water to high-rise users by the pump house unit, the flow and lift data of the operation of the water pump are actually measured, fed back to the PC end through the control cabinet, and an optimized water-saving scheme is set according to the requirement of the actual water supply. The invention saves energy consumption to a great extent and realizes high-efficiency water supply for users.

Description

A high-efficiency and energy-saving building water supply system

technical field

The invention belongs to the field of building water supply, and mainly relates to an energy-saving and high-efficiency building water supply system.

Background technique

The urban water supply system is a large power consumer and has a lot of room for energy saving. At present, the efficiency of pumping stations in my country is low, and the layout design of the water supply pipe network is not reasonable enough, resulting in a lot of energy waste. Therefore, when designing water supply systems, high efficiency and energy saving are becoming more and more important. more recognized by people.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention proposes a high-efficiency and energy-saving building water supply system, optimizes the water supply system, and designs a reasonable water supply scheme from the perspective of the entire life cycle of the system to solve the above problems.

The object of the present invention adopts following technical scheme to realize:

The invention includes a pressure supplement tank body, a steady flow tank body, a pressure stabilizer tank body, a water tank, a pump room unit, a pressure sensor, a flow sensor, a control cabinet, a permanent magnet synchronous motor, a PC terminal, a compensation tank, a pressure holding tank, a water pump and inverter.

The municipal pipe network directly supplies water to low-level users. The water inlet and outlet of the municipal pipe network are equipped with pressure supplement tanks, steady flow tanks and pressure stabilizer tanks to realize high-efficiency water supply to users.

The water supply for high-rise users is through the water pump, and the secondary water supply is realized by using the full frequency conversion constant pressure technology. The water inlet and outlet of the municipal pipe network are connected to the water tank, and the water tank is connected to the pump room unit, and water is supplied to the high-rise users through the pump room unit.

The full frequency conversion and constant pressure technology mentioned above means that each water pump is equipped with a frequency converter, and each of the four water pumps in the pump room unit is equipped with a frequency converter and a matching permanent magnet synchronous motor. The control cabinets are connected, and the frequency converters are used as backups for each other.

Furthermore, during the water supply process of the pump room unit to the high-rise users, the flow and head data of the pump operation are actually measured. The flow sensor measures the real-time flow, and the pressure sensor measures the real-time pressure. The flow sensor and the pressure sensor are installed at the water inlet of the high-rise user, and the control cabinet Connected, the flow and pressure data are fed back to the PC through the control cabinet.

Further, the energy consumption data of the system is dynamically calculated, and an optimized water-saving plan is set according to the actual water supply demand, and a compensation tank and a pressure-holding tank are set between the water outlet and the water inlet of the pump room unit by adopting variable capacity and steady flow compensation technology , the water inlet compensation amount and the outlet water pressure retention amount of the compensation tank and the pressure holding tank will change according to the change of the water flow.

Beneficial effects of the present invention:

1. Energy saving: Adopt full frequency conversion and constant pressure technology. Each pump is equipped with a frequency converter. Compared with asynchronous motors, the efficiency attenuation is reduced, and the selection of motors and frequency converters saves energy consumption to a large extent. At the same time, by actually measuring the flow and head data of the water pump, dynamically calculating the energy consumption data of the system, and setting an optimized water-saving plan according to the actual water supply demand, the water inlet compensation amount and the outlet water pressure maintenance amount will be changed according to the change of water flow. Variety.

2. In terms of high efficiency: pressure supplement tanks, steady flow tanks and pressure stabilizing tanks are installed at the water inlet and outlet of the municipal pipe network to realize negative pressure protection of municipal water inlet, pressure compensation, pressure stabilization at the water outlet and small flow protection. The pressure function eliminates the influence of the fluctuation of the inlet water pressure on the stability of the outlet water pressure, and realizes high-efficiency water supply to users.

Description of drawings

Figure 1 is a schematic diagram of a building water supply system.

Detailed ways

The technical solution of the present invention will be clearly and completely described below in conjunction with the schematic diagrams in the present invention.

As shown in Figure 1, an energy-saving and high-efficiency building water supply system of the present invention includes: a pressure supplement tank body 2, a steady flow tank body 3, a pressure stabilizing tank body 4, a water tank 5, a pump room unit 6, a pressure sensor 7, Flow sensor 8, control cabinet 9, permanent magnet synchronous motor 10, PC terminal 13, compensation tank 14, pressure holding tank 15, water pump 16 and frequency converter 17.

The municipal pipe network 1 directly supplies water to the low-level users 12, and the multi-stage steady flow regulation technology is applied. The functions of water negative pressure protection, pressure compensation, water outlet pressure stabilization and small flow pressure maintenance eliminate the influence of inlet water pressure fluctuations on outlet water pressure stability, and realize high-efficiency water supply to users.

Furthermore, the water supply of high-rise users 11 is achieved through water pumps using full frequency conversion and constant pressure technology to achieve secondary water supply. The municipal pipe network 1 is connected to the water tank 5, and the water tank 5 is connected to the pump room unit 6, and water is supplied to the high-rise users 11 through the pump room unit 6.

The full frequency conversion constant pressure technology is that each water pump 16 is equipped with a frequency converter 17, and each water pump 16 of the four pumps in the pump room unit 6 is equipped with a frequency converter 17 and a matching permanent magnet synchronous motor 10 , each frequency converter 17 is connected to the control cabinet 9, and the frequency converters serve as backups for each other, which overcomes the energy loss caused by the time delay of traditional frequency converter switching and realizes energy saving. The motor of the pump adopts a permanent magnet synchronous motor 10, which is highly matched with the frequency converter. Compared with the asynchronous motor, the efficiency attenuation is relatively small, and the loss is reduced.

Furthermore, during the water supply process of the pump room unit 6 to the high-rise user 11, the actual flow and lift data of the pump operation are measured. The flow sensor 8 measures the real-time flow, and the pressure sensor 7 measures the real-time pressure. The flow and pressure sensors are installed at the water inlet of the high-rise user 11. , connected with the control cabinet 9, the flow and pressure data are fed back to the PC terminal 13 through the control cabinet 9.

Further, the energy consumption data of the system is dynamically calculated, and an optimized water-saving plan is set according to the actual water supply demand, and the compensation tank 14 and pressure-holding tank 14 are set between the water outlet and the water inlet of the pump room unit by adopting variable capacity and steady flow compensation technology. The tank 15, the water inlet compensation amount and the outlet water pressure retention amount of the compensation tank and the pressure holding tank can change according to the change of the water flow. When the flow rate is small, the compensation tank and the pressure tank are connected to the outlet water, and the water outlet pressure is doubled; when the flow rate is medium, the compensation tank and the pressure tank are independent, the compensation tank is for water inlet compensation, and the pressure tank is for water outlet pressure maintenance; large flow When , the compensation tank and the pressure holding tank are connected to the water inlet, and the compensation amount of the water inlet increases.

Furthermore, when purchasing building water supply system equipment, consider the full life cycle cost of the product, such as equipment price, later maintenance, and residual value after scrapping. Although the cost at the beginning is relatively high, it will improve the service life and work efficiency, and reduce the maintenance cost in the later period. Once the water supply equipment fails, the maintenance cost will be relatively high, and the efficiency after maintenance may not be as good as before, which will make The cost increases, so the hidden cost is taken into account when purchasing the equipment, which reduces the total cost and increases the income.

Claims (4)

1. The high-efficiency energy-saving building water supply system is characterized by comprising a pressure supplementing tank body, a steady flow tank body, a pressure stabilizing tank body, a water tank, a pump room unit, a pressure sensor, a flow sensor, a control cabinet, a permanent magnet synchronous motor, a PC end, a compensation tank, a pressure maintaining tank, a water pump and a frequency converter;

the municipal pipe network directly supplies water to low-level users, and a pressure supplementing tank body, a steady flow tank body and a pressure stabilizing tank body are arranged at the water inlet and outlet ends of the municipal pipe network;

the water supply of high-rise users is realized by a water pump by adopting a full-frequency constant-pressure technology; the water inlet and outlet ends of the municipal pipe network are connected with a water tank, the water tank is connected with a pump room unit, and water is supplied to high-rise users through the pump room unit;

four water pumps are arranged in the pump house unit, each water pump is provided with a frequency converter and a matched permanent magnet synchronous motor, and each frequency converter is connected with a control cabinet;

in the process of supplying water to a high-rise user by a pump house unit, actually measuring the flow and lift data of the operation of a water pump, wherein a flow sensor and a pressure sensor are arranged at a water inlet of the high-rise user and are connected with a control cabinet, and real-time flow and pressure are measured, and the flow and pressure data are fed back to a PC (personal computer) end through the control cabinet;

the energy consumption data of the system is dynamically calculated, an optimized water-saving scheme is set according to the actual water supply demand, a variable-capacity steady-flow compensation technology is adopted, a compensation tank and a pressure maintaining tank are arranged between a water outlet and a water inlet of a pump room unit, and the water inlet compensation quantity and the water outlet pressure maintaining quantity of the compensation tank and the pressure maintaining tank are changed according to the change of water flow.

2. An energy efficient building water supply according to claim 1, wherein: the full-frequency-conversion constant-pressure technology is that each water pump is provided with a frequency converter.

3. An energy efficient building water supply according to claim 1 or 2, characterized in that: the frequency converters are mutually standby.

4. An energy efficient building water supply according to claim 1, wherein: the municipal pipe network directly supplies water to low-level users, and a multi-stage steady flow adjusting technology is adopted.

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