CN204174665U - Increment pump addition of variable pump without tower energy saving water supply device - Google Patents

Abstract

The utility model discloses a tower-less energy-saving water supply device with an incremental pump plus a variable pump, comprising a non-negative pressure tank (10), a pressure probe, a water inlet pipe (4), a water outlet pipe (3), and an incremental pump (1). Group, variable pump (7) group, characterized in that: the water inlet pipe (4) of the incremental pump group and the variable pump group communicates with the non-negative pressure tank, the non-negative pressure tank is connected with the municipal water supply network, and the incremental pump group The single pump flow rate and head are the same, the total flow rate of the variable pump set is equal to the single pump flow rate of the incremental pump set, and the pressure probe (5) and the water outlet pressure probe (2) are respectively installed on the inlet and outlet pipes. The motor wires (6) of the pump group and the variable variable pump group are connected to the program control box (9), and the outlet pipe is connected to the air pressure tank (8). The utility model fully saves water supply energy consumption, reduces product cost and operating cost, not only reduces the cost of the frequency converter and the energy consumption of the frequency converter itself, the water pump is basically in the power frequency state, but the water pressure is stable, and the pump efficiency utilization rate is close to 100%.

Description

Towerless energy-saving water supply device with incremental pump and variable pump

technical field

The utility model relates to a water supply device, in particular to an energy-saving and capital-saving water supply device without a tower, which is an incremental pump plus a variable pump and is suitable for secondary pressurized water supply.

Background technique

With the rapid development of urban construction, there are more and more high-rise buildings, and the secondary pressurization of tap water has become an indispensable part of high-rise buildings. However, the traditional secondary water supply mostly uses high-level water (pool) towers. Since the high-level water (pool) towers have secondary pollution to varying degrees, in order to solve this problem, frequency conversion without tower pressurization equipment is now used. For variable frequency pressurization equipment without towers, frequency converters are often used to drive a group of water pumps with equal power, flow, and lift to supply water. When the water consumption changes, the increase and decrease of water pumps are used. In order to meet the actual water consumption, the frequency converter changes the speed of the water pump to change the flow rate of the water pump. When a small amount of water is used and the change in water consumption is less than 50% of the flow rate of a water pump, the working efficiency of the frequency conversion pump is very low, because the change Although the speed of the water pump changes the water supply, the lift of the pump also changes, but the height of the water supply does not change, so the efficiency of the low-frequency operation of the pump is very low. Frequently, the working efficiency of the water pump is not at the best working point of the water pump, the efficiency of the water pump is not fully utilized, and the energy consumption of water supply is high. Therefore, an incremental pump with stable water pressure plus a variable pump without tower is developed to save energy and money. Water supply device is very necessary.

Utility model content

The purpose of this utility model is to overcome the deficiencies of the prior art, and provide an energy-saving, capital-saving, and water-pressure-stabilized incremental pump plus a variable pump without a tower energy-saving water supply device. The purpose of this utility model is achieved through the following technical solutions : The utility model comprises no negative pressure tank, pressure probe, water inlet pipe, water outlet pipe, incremental pump group, variable pump group, is characterized in that the water inlet pipe of incremental pump group and variable pump group communicates with the non-negative pressure tank, without The negative pressure tank is connected to the municipal water supply pipe network. The single pump flow rate and head of the incremental pump group are the same. The total flow rate of the variable pump group is equal to the single pump flow rate of the incremental pump group. The water outlet pressure probe, the motors of the pressure probe, the incremental pump group and the variable pump group are connected to the program control box with wires, and the water outlet pipe is connected to the air pressure tank.

The incremental pump group and variable variable pump group configuration method of the utility model fully saves water supply energy consumption, reduces product cost and operating cost, because the water consumption changes greatly, and the program controller controls the increase and decrease of the incremental pump (power frequency pump) to work , the change in water consumption is small, and the program controller controls the increase and decrease of the variable variable pump (variable frequency pump). Since the flow rate of the variable variable pump group is the flow rate of an incremental pump, the power of a single variable variable pump and frequency converter is extremely low, which not only reduces the frequency conversion. The cost of the inverter and the energy consumption of the inverter itself, the water pump is basically in the state of power frequency, while the water pressure is stable, and the utilization rate of the pump efficiency is close to 100%. Since the water inlet pipe of the water supply device is provided with a non-negative pressure tank, it can be superimposed with the tap water pipe network for water supply, making full use of the pressure of the tap water pipe network and saving electric energy. Because the outlet pipe of this water supply device is provided with an air pressure tank, when no one uses water, the constant pipe network water pressure is used by the air pressure tank without electricity. From the foregoing, it can be seen that the purpose of this utility model can be achieved.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

As shown in Figure 1, the utility model includes a non-negative pressure tank 10, a pressure probe, a water inlet pipe 4, a water outlet pipe 3, 1 group of incremental pumps, and 7 groups of variable pumps, and is characterized in that the incremental pump group and the variable pump group The water inlet pipe 4 communicates with the non-negative pressure tank, and the non-negative pressure tank is connected with the municipal water supply network. The single pump flow rate and head of the incremental pump set are the same, and the total flow rate of the variable pump set is equal to the single pump flow rate of the incremental pump set. The inlet and outlet pipes are respectively provided with an inlet pressure probe 5 and an outlet pressure probe 2, the pressure probe and the motors of the incremental pump group and the variable pump group are connected with the program control box 9 with leads 6, and the outlet pipe is connected with the air pressure tank 8.

Claims (1)

1. an increment pump addition of variable pump without tower energy saving water supply device, comprise pot with no negative pressure (10), pressure probe, water inlet pipe (4), outlet pipe (3), increment pump (1) group, variable pump (7) group, it is characterized in that: the water inlet pipe (4) of increment pump group and variable pump group communicates with pot with no negative pressure, pot with no negative pressure is connected with municipal network water supply, the single-pump flow of increment pump group, lift is identical, the total flow of variable pump group is equal with the single-pump flow of increment pump group, enter, outlet pipe is respectively equipped with pressure probe (5) and discharge pressure probe (2), pressure probe, increment pump group, the motor wire (6) of variable pump group is connected with program control case (9), outlet pipe communicates with air pressure tank (8).