CN204626530U - Have stabilizing compensation ability and night small flow pressure maintaining function two cavate non-negative pressure water-supply installations - Google Patents

Abstract

The utility model relates to a two-chamber non-negative pressure water supply equipment with the ability of stabilizing and compensating and the function of maintaining pressure at night with small flow, including a constant pressure compensation tank and a frequency conversion water pump. The input end of the constant pressure compensation tank is connected to the municipal pipe through the The output end of the constant pressure compensation tank is connected to the user pipe network through the frequency conversion pump, and also includes a bidirectional compensator, an ultra-high pressure chamber compensation tank and an ultra-high pressure energy storage pump, and the input end of the bidirectional compensator is connected to the constant pressure compensation tank. The input end is connected, and the output end of the bidirectional compensator is connected to the user pipe network. The compensation end of the tank is connected; through this scheme, the effective compensation water provided by the small flow pressure maintaining function of the traditional secondary pressurized water supply equipment is less; the water pump starts and stops frequently; , making the operation of the water supply system more secure, stable, efficient and energy-saving.

Description

Two-chamber non-negative pressure water supply equipment with the ability to stabilize pressure and compensate and maintain pressure at night with small flow

technical field

The utility model relates to a water supply device, in particular to a two-cavity non-negative pressure water supply device with the ability of stabilizing and compensating the pressure and the function of keeping the pressure at night with small flow.

Background technique

In the design process of the water supply system, when the water volume and water pressure of the outdoor water supply pipe network cannot meet the water volume and water pressure requirements of the indoor pipe network, it is necessary to set up secondary pressurization equipment to increase the primary water supply to meet the water demand of users.

At present, the main secondary pressurized water supply equipment on the market mainly includes: frequency conversion water supply equipment and non-negative pressure water supply equipment, which can be selected according to the specific supply and demand conditions of the project. However, in the actual application process, there are still many problems with the above equipment And the shortcomings, because the pressure inside the pressure-stabilizing tank set at the outlet of the pressurization equipment is only the pressure required by the user's most unfavorable water distribution point, that is, the full-lift pressure after the pump. Through actual testing, the existing secondary pressurized water supply equipment, The effective compensation water provided by the small flow pressure maintaining function is less, and the water pump starts and stops frequently during the small flow water supply period, especially at night. .

Utility model content

In view of this, the main purpose of this utility model is to provide a two-chamber non-negative pressure water supply equipment with the ability to stabilize and compensate the pressure and the function of keeping the pressure at night with small flow. Changes and user pipe network demand changes are automatically adjusted. On the premise of protecting the pressure of the municipal pipe network and maintaining it above the minimum service value, the water volume and water pressure at the user end can be guaranteed during peak water supply flow periods and low water supply flow periods. Requirements, normal water supply, and can ensure a long time difference compensation function and night small flow pressure maintaining function.

The technical scheme of the utility model is realized in the following way: a two-cavity non-negative pressure water supply equipment with the function of stabilizing and compensating and keeping the pressure at night with small flow, including a constant pressure compensating tank and a frequency conversion water pump, the constant pressure compensating tank The input end of the constant pressure compensation tank is connected to the municipal pipe network through the connecting pipeline, and the output end of the constant pressure compensation tank is connected to the user pipe network through a frequency conversion pump. It also includes a bidirectional compensator, an ultra-high pressure cavity compensation tank and an ultra-high pressure energy storage pump. The input end of the bi-directional compensator is connected to the input end of the constant pressure compensation tank, the output end of the bi-directional compensator is connected to the user pipe network, and the compensation end of the bi-directional compensator is connected to the input end of the ultra-high pressure cavity compensation tank through the ultra-high pressure energy storage pump , the output end of the compensation tank in the ultra-high pressure chamber is connected to the compensation end of the bidirectional compensation tank.

A non-negative pressure flow controller and a pressure sensor are arranged on the connecting pipeline connected to the municipal pipe network, and the non-negative pressure flow controller and the pressure sensor are respectively electrically connected to the controller through wires.

An electromagnetic decompression valve is arranged on the communication pipeline connecting the compensation tank of the ultra-high pressure chamber and the compensation end of the bidirectional compensator.

The beneficial effect of adopting the above-mentioned technical scheme is: a two-chamber non-negative pressure water supply equipment with the ability of voltage stabilization and compensation and the function of maintaining pressure at night with small flow. The analysis and summary of the traditional secondary pressurized water supply equipment, through this technical scheme, It solves the problems of less effective compensation water provided by the small-flow pressure-holding function of traditional secondary pressurized water supply equipment; frequent start and stop of water pumps; insufficient pressure stabilization function and large changes in outlet water pressure, making the operation of the water supply system safer, more stable and more efficient energy saving.

Description of drawings:

Figure 1 is a schematic diagram of the overall structure of the utility model.

Among them, 1 constant pressure compensation tank, 2 frequency conversion water pump, 3 connecting pipeline, 4 municipal pipe network, 5 user pipe network, 6 two-way compensator, 7 ultra-high pressure chamber compensation tank, 8 ultra-high pressure energy storage pump, 9 no negative pressure Flow controller, 10 pressure sensor, 11 wire, 12 controller, 13 electromagnetic pressure reducing valve.

Detailed ways

Below in conjunction with accompanying drawing, the specific technical scheme of the utility model is further elaborated.

As shown in Figure 1, the utility model relates to a two-chamber non-negative pressure water supply equipment with the ability of stabilizing and compensating and the function of maintaining pressure at night with small flow, including a constant pressure compensation tank 1 and a frequency conversion water pump 2, the constant pressure compensation tank The input end of 1 is connected to the municipal pipe network 4 through the connecting pipeline 3, the output end of the constant pressure compensation tank 1 is connected to the user pipe network 5 through the frequency conversion water pump 2, and also includes a bidirectional compensator 6, an ultra-high pressure chamber compensation tank 7 and Ultra-high pressure energy storage pump 8, the input end of the two-way compensator 6 is connected to the input end of the constant pressure compensation tank 1, the output end of the two-way compensator 6 is connected to the user pipe network 5, and the compensation end of the two-way compensator 6 is connected to the supercharger The high-pressure accumulator pump 8 is connected to the input end of the ultra-high pressure chamber compensation tank 7 , and the output end of the ultra-high pressure chamber compensation tank 7 is connected to the compensation end of the bidirectional compensation tank 1 .

The connecting pipeline 3 connected to the municipal pipe network 4 is provided with a non-negative pressure flow controller 9 and a pressure sensor 10, and the non-negative pressure flow controller 9 and the pressure sensor 10 are respectively electrically connected to the controller 12 through a wire 1 .

An electromagnetic decompression valve 13 is provided on the communication pipeline 3 connecting the compensation tank 7 of the ultra-high pressure chamber to the compensation end of the bidirectional compensator 6 .

When the utility model is working with normal flow water supply, the working condition of the municipal pipe network 4 is good, and the pressure and water volume of the incoming water are guaranteed. After the pressure compensation tank 1 is pressurized by the frequency conversion water pump 2, it is supplied to the user pipe network 5, and the other path passes through the input end of the bidirectional compensator 6. During this process, while ensuring the normal water supply of the user pipe network 5, the bidirectional compensator 6 is connected After the ultra-high pressure chamber accumulator pump 8 boosts the pressure again, water is pumped into the ultra-high pressure chamber compensation tank 7 .

When the utility model works at the peak of the water flow, the incoming water pressure of the municipal pipe network 4 fluctuates for a short time, the controller 12 collects the signal through the pressure sensor 10 and makes an analysis, and controls the non-negative pressure flow controller 9 to reduce the equipment from the municipal pipe. The amount of water taken from the network 4, while controlling the conduction of the compensation terminal of the bidirectional compensator 6 and the input terminal of the bidirectional compensator 6, after the compensation tank 7 of the ultra-high pressure chamber passes through the electromagnetic decompression valve 13, the constant pressure compensation The tank 1 performs continuous and effective differential compensation, thereby making up for the lack of water intake of the municipal pipe network 4, and greatly improving the differential compensation capability of the equipment.

When the utility model works with water with a small flow rate, it is the time for water with a small flow rate at night, the frequency conversion water pump 2 in the equipment stops working, the controller 12 controls the compensation end of the bidirectional compensator 6 to conduct with the output end of the bidirectional compensator 6, and the ultra-high pressure The chamber compensation tank 7 is connected to the user pipe network 5, and the ultra-high pressure chamber compensation tank 7 continuously and effectively compensates the water volume of the user pipe network to meet the user's small flow water demand and greatly improve the small flow pressure maintenance function of the equipment.

The ultra-high pressure chamber compensation tank 7 in the utility model is a liner type compensation tank of the prior art, and will not be described in detail here.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model.

Claims (3)

1. one kind have stabilizing compensation ability and night small flow pressure maintaining function two cavate non-negative pressure water-supply installations, comprise constant-pressure compensation tank and variable frequency pump, the input of described constant-pressure compensation tank is connected with city planting ductwork by connecting line, the output of constant-pressure compensation tank is connected with user's pipe network through variable frequency pump, it is characterized in that, include bidirectional compensator, super-pressure chamber compensating tank and super-pressure storage pump, the input of described bidirectional compensator is connected with the input of constant-pressure compensation tank, the output of bidirectional compensator is connected with user's pipe network, the compensation end of bidirectional compensator is connected through the input of super-pressure storage pump with super-pressure chamber compensating tank, the output of described super-pressure chamber compensating tank is connected with the compensation end of bidirectional compensating tank.

2. according to claim 1 have stabilizing compensation ability and night small flow pressure maintaining function two cavate non-negative pressure water-supply installations, it is characterized in that, the connecting line that city planting ductwork is connected is provided with without vacuum flow amount controller and pressure sensor, is describedly electrically connected mutually respectively by wire and controller with pressure sensor without vacuum flow amount controller.

3. according to claim 1 have stabilizing compensation ability and night small flow pressure maintaining function two cavate non-negative pressure water-supply installations, it is characterized in that, the connecting pipeline that described super-pressure chamber compensating tank is connected with the compensation end of bidirectional compensator is provided with on connecting line that city planting ductwork is connected and is provided with electromagnetic relief pressure valve.