CN202767179U - Non-negative pressure water supply equipment - Google Patents

Abstract

The utility model discloses non-negative pressure water supply equipment comprising a water storage tank connected with a municipal water supply pipe network, wherein a water inlet pressure sensor is arranged at a water outlet of the water storage tank; the water storage tank is connected in series with a pressurizing water pump set; the pressurizing water pump set is connected in series with a steady-flow compensation tank; a water outlet pipe of the steady-flow compensation tank is provided with a water outlet pressure sensor; and the steady-flow compensation tank is connected with a water outlet pipe at the tail end of the pipe network. Compared with the prior art, the problems of great pressure change and low water quantity regulation capacity of the conventional pneumatic water supply equipment can be solved.

Description

No negative pressure water supply equipment

technical field

The utility model relates to water supply equipment, in particular to a water supply equipment which makes the pressure change in the water supply pipe network small.

Background technique

The existing air pressure water supply equipment is pressurized by the pressurized water pump group through the municipal water supply pipe network storage pool or water storage tank, and then connected to the end of the pipe network to supply water to end users. pump drive. Pneumatic water supply equipment uses the compressed air in the closed air pressure water tank to send the water in the tank to the end of the pipe network. It functions as a water tower or a high-level water tank. It can adjust and store a certain amount of water and maintain the required pressure. It is widely used. booster equipment. Since the water supply pressure of air pressure water supply equipment is maintained by the compressed air in the tank, the installation height of the tank body can be unlimited, so it is not suitable for installation in water towers and high-level water tanks. The advantages of this kind of equipment are less investment, fast construction speed, easy demolition, flexible installation location, simple maintenance and management, water quality is not easy to be polluted by secondary pollution, and has a certain effect of eliminating water hammer. The disadvantage is that the water storage capacity of the tank is limited, the water volume adjustment ability is small, and the operating cost is high; in addition, because the air pressure water tank is connected in series in the pipe network, the pressure in the tank changes positively with the pressure change in the pipe network, which affects the entire pipe network. The pressure wave does not have any stabilizing effect, so it is not suitable for the water supply of residential buildings. the

Contents of the invention

The problem to be solved by the utility model is to provide a non-negative pressure water supply equipment to solve the problems of large pressure change and small water volume adjustment capacity in the pipe network of the existing air pressure water supply equipment.

In order to solve the above problems, the technical solution of the utility model is: the non-negative pressure water supply equipment includes a water storage tank connected to the municipal water supply pipe network, the water outlet of the water storage tank is provided with a water inlet pressure sensor, and the water storage tank The tank is connected in series with a pressurized water pump group, the pressurized water pump group is connected in series with a steady flow compensation tank, the outlet pipe of the steady flow compensation tank is provided with an outlet pressure sensor, and the steady flow compensation tank is connected to the outlet pipe at the end of the pipe network.

In the above technical solution, a more specific solution may be: the steady flow compensation tank includes a tank body connected with a water inlet pipe and a water outlet pipe, an air bag is arranged in the tank body, the air bag is connected with an air inlet pipe, and the air bag The interior is filled with compressed gas; the air bag is provided with an automatic exhaust valve and a gas pressure sensor.

Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

This non-negative pressure water supply equipment utilizes the ability to store water and reduce the pressure of the pipe network to the set value at the same time when the pressure of the pipe network is too high, and to supply water to the end users of the pipe network and increase the pressure of the pipe network to the set value at the same time when the pressure of the pipe network is too small The value of the steady flow compensation tank can reduce the pressure change in the pipe network and increase the water volume adjustment capacity of the entire water supply equipment; and the air bag can also isolate the contact between gas and water to prevent water quality from being polluted.

Description of drawings

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

Fig. 2 is a front view of the steady flow compensation tank in the embodiment of the utility model.

Detailed ways

The utility model is described in further detail below in conjunction with accompanying drawing implementation:

The non-negative pressure water supply equipment shown in Figure 1 includes a water storage tank 1 connected to the municipal water supply pipe network, the water outlet of the water storage tank 1 is provided with a water inlet pressure sensor 2, and the water storage tank 1 is connected in series with a pressurized water pump group 3 , the pressurized water pump group 3 is connected in series with a steady flow compensation tank 4, the outlet pipe of the steady flow compensation tank 4 is provided with a water outlet pressure sensor 5, and the steady flow compensation tank 4 is connected to the outlet pipe 6 at the end of the pipe network. The water inlet pressure sensor 2, the pressurized water pump group 3 and the water outlet pressure sensor 5 are all controlled by the electric control cabinet 7 of the control system. The water inlet and outlet of the steady flow compensation tank shown in FIG. 2 are arranged at the bottom of the tank body 11 , the water inlet of the tank body 11 is connected with the water inlet pipe 12 , and the water outlet of the tank body 11 is connected with the water outlet pipe 13 . The upper part of the tank body 11 is provided with an air bag 14, which is filled with compressed gas to enhance the pressure regulation function. The air bag 14 is connected with an air inlet pipe 15, and the air inlet pipe 15 is connected with an air supply device; the air bag 14 is also connected with an automatic exhaust valve. 16 and a gas pressure sensor 17, the gas pressure sensor 17 is connected to the gas supply system.

The control system first presets the set value for the inlet and outlet water pressure. When in use, the control system starts or stops the pressurized water pump group 3 according to the pressure information fed back by the inlet water pressure sensor 2, and the outlet pipe at the end of the water supply network through the steady flow compensation tank 4 6 water supply; when the water inlet pressure in the pipe network is too high, tap water flows into the steady flow compensation tank 4, the gas in the air bag 14 of the steady flow compensation tank 4 is discharged through the automatic exhaust valve 16, and the steady flow compensation tank 4 is in the water storage position At this time, the water inlet pressure in the pipe network decreases and approaches the set value; when the control system detects that the pressure in the pipe network is too small, the control system starts the air supply device to supply air to the air bag 14 of the steady flow compensation tank 4, and the air bag 14 When the pressure value in the pipe network is greater than the pressure value in the pipe network, the tap water is discharged from the steady flow compensation tank 4, and water is supplied to the outlet pipe 6 at the end of the pipe network. The control system detects the pressure value in the air bag 14 fed back by the gas pressure sensor 17 When the set value is reached, the gas supply is stopped, and the pressure in the pipe network increases close to the set value. In this way, when the pressure in the pipe network is too large, the steady flow compensation tank 4 stores water and reduces the pressure in the pipe network, and when the pressure in the pipe network is too small, the steady flow compensation tank 4 releases water and increases the pressure in the pipe network. There is no negative pressure water supply equipment The pressure change in the pipe network is reduced, and the water volume regulation ability is strong.

Claims (2)

1. A non-negative pressure water supply equipment, comprising a water storage tank connected to the municipal water supply pipe network, the water outlet of the water storage tank is provided with a water inlet pressure sensor, and the water storage tank is connected in series with a pressurized water pump group, which The feature is that: the pressurized water pump group is connected in series with a steady flow compensation tank, the outlet pipe of the steady flow compensation tank is provided with a water outlet pressure sensor, and the steady flow compensation tank is connected to the outlet pipe at the end of the pipe network. 2. The non-negative pressure water supply equipment according to claim 1, characterized in that: the steady flow compensation tank includes a tank body connected with a water inlet pipe and a water outlet pipe, an air bag is arranged in the tank body, and the air bag is connected with a The air intake pipe is filled with compressed gas; the air bag is provided with an automatic exhaust valve and a gas pressure sensor.

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