CN201687044U - A non-negative pressure secondary water supply high pressure water storage tank - Google Patents

Abstract

The utility model provides a non-negative pressure secondary water supply high pressure water storage tank, relates to a high pressure water storage tank, a non negative pressure secondary water supply high pressure water storage tank, the pressure tank is equipped with Diaphragm airbag, the diaphragm airbag is connected to the air inlet, a vent valve and a water supply valve are arranged under the pressure tank, an automatic exhaust valve is arranged above the pressure tank, and an inspection port is arranged on the side of the air inlet. By setting the utility model at the most unfavorable point of water use in the water pipe network, preferably at a high place, and installing a diaphragm air bag filled with compressed air in the pressure tank, it can realize water intake when the water pump is running, and water intake when the water pump is dormant. Water supply, the "water supply system" of multiple water sources that constitutes the water pipe network, can instantly replenish water volume, play the role of stabilizing pressure and flow, and can achieve low-flow and zero-flow pressure-keeping operation without power consumption, saving energy consumption, Reduce operating costs and reduce equipment wear and tear.

Description

A non-negative pressure secondary water supply high pressure water storage tank

technical field

The utility model relates to a high pressure type water storage tank, which is especially suitable for non-negative pressure frequency conversion water supply and secondary water supply.

Background technique

Non-negative pressure secondary water supply equipment, including non-negative pressure superimposed water supply equipment, intelligent non-negative pressure pressurized water tank, non-negative pressure pipeline pressurized water supply equipment, non-negative pressure non-suction pipe network pressurized steady-flow water supply equipment, etc. , is a new type of water supply equipment after water tank (water tower) water supply, air pressure water supply, frequency conversion speed regulation water supply, has the advantages of fully enclosed, pollution-free, energy-saving, less land occupation, quick installation, reliable operation, and convenient maintenance. However, it fails to solve the three problems of water pumps, including the direct water supply of frequency conversion pumps:

1. The instantaneous circulation is insufficient at the peak of water consumption.

This is due to the acceleration lag of the water pump. When the water consumption suddenly increases, it is impossible to increase the speed of the water pump and increase the flow in an instant. There must be a few seconds to one minute of acceleration time, which will cause a short-term insufficient flow or even stop the flow. , pressure fluctuations occur, and the commonly used surge tank has a small ability to adjust the water pressure.

2. The operating cost is too high.

It is difficult to keep water from leaking in the living pipe network, and some users even turn down the tap on purpose to catch water. Since water is incompressible, as long as the pipe network leaks, the pressure will drop, and the water pump needs to run to maintain pressure. The energy-saving effect of non-negative pressure frequency conversion water supply is feasible in the normal water consumption stage; but when the water consumption is low peak and at night with small flow rate and zero flow rate, relying on the low-speed operation of the water pump to ensure the constant pressure of the pipe network, compared with the power frequency operation of the water pump. It has a certain energy-saving effect, but it cannot be used without power consumption. In 24 hours a day, the real water consumption peak is less than 4 hours, and there are more than 20 hours in the state of low flow and zero flow water, and a large amount of electric energy is wasted in the pressure maintaining operation. How to solve the problem of maintaining pressure in the small flow water supply of the pipe network is a common problem faced by the water supply equipment that relies on the operation of the water pump to ensure the constant pressure of the pipe network. At present, all water supply equipment manufacturers in the country have not been able to effectively solve this problem.

3. Frequent starting and stopping will lead to accelerated wear and tear of equipment.

In order to maintain the pressure of the pipeline network, the pressurized equipment is frequently started and dormant, which not only has high operating costs, but also wears out the equipment quickly.

Contents of the invention

The technical problem to be solved by the utility model is to provide a non-negative pressure secondary water supply high-pressure water storage tank, which can solve the problem of small-flow water supply and pressure-maintaining operation of the pipe network, and reduce energy consumption and equipment wear.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a high pressure water storage tank with secondary water supply without negative pressure. It is equipped with a vent valve and a water supply valve, an automatic exhaust valve on the top of the pressure tank, and an inspection port on one side of the pressure tank.

The material of the pressure tank is stainless steel.

The material of the diaphragm airbag is rubber.

The diaphragm airbag is filled with compressed air.

The utility model provides a non-negative pressure secondary water supply high-level pressure water storage tank. By setting the utility model at the most unfavorable point of water use in the water pipe network, it is preferably located at a high place, and a filling tank is provided in the pressure tank. The diaphragm airbag with compressed air can realize water intake when the water pump is running and water supply when the pump is dormant, forming a multi-water source "water supply system" for the water pipe network. The compressed air in the diaphragm airbag is compressed when water is fed and expanded when water is delivered. Realize the water supply without negative pressure. The beneficial effect of the utility model is that it can instantly complete the replenishment of water, play the role of stabilizing the pressure and flow, and can achieve the pressure-keeping operation without power consumption when the flow rate is small or zero, saving energy consumption. , Reduce operating costs and reduce equipment wear and tear.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a schematic diagram of the overall installation structure of the utility model;

Fig. 2 is the installation diagram of the utility model.

Detailed ways

As shown in Figure 1 and Figure 2, a non-negative pressure secondary water supply high pressure water storage tank, the pressure tank 3 is provided with a diaphragm air bag 2, the diaphragm air bag 2 is connected to the air inlet 4, and the pressure tank 3 is provided with a Venting valve 7 and water supply valve 8, automatic exhaust valve 1 is provided above pressure tank 3, and inspection port 6 is provided on one side of pressure tank 3.

The pressure tank 3 is made of stainless steel.

The material of the diaphragm airbag 2 is rubber.

The diaphragm airbag 2 is filled with compressed air.

The pressure tank 3 is connected to the user's pipe network. The preferred solution is to install the utility model at the height of the most unfavorable water point of the water pipe network. The pressure tank 3 made of stainless steel is used to store a certain amount of water, and the diaphragm air bag 2 is equipped with a compression The air adjusts the pressure in the pressure tank 3 through the change of its own volume, and the automatic exhaust valve 1 is used for exhausting the pressure tank 3 . When the high-level water storage tank runs for the first time or after maintenance, there is air in the stainless steel pressure tank, and the air is discharged from the automatic exhaust valve 1 when water is pumped into the pressure tank 3 from the water supply valve 8.

When the water pump is running, water is pumped into the pressure tank 3 from the water supply valve 8 to compress the diaphragm airbag 2 to increase the water storage volume of the pressure tank 3 . When the water pump is at rest, the pressure in the pressure tank 3 drops, and the volume of the diaphragm airbag 2 expands to increase the pressure in the pressure tank 3. As the volume of the diaphragm airbag 2 increases, the water in the pressure tank 3 is discharged to ensure the pressure of the pipe network. The pressure tank 3 supplements the pipe network when the flow rate is small, which reduces the number of start-ups of the frequency conversion water pump, reduces energy consumption and the frequency of start-up and start-up.

Diaphragm airbag 2 is made of natural rubber material, and air inlet 4 is fixed on inspection port 6. Diaphragm airbag 2 is an independently closed airbag filled with compressed air. The compressed air does not contact the water in pressure tank 3. The inspection port 6 is sealed by the inspection hole cover plate 5, which is opened when the diaphragm airbag 2 is cleaned or replaced, and the diaphragm airbag 2 is installed and removed from the inspection port 6. A vent valve 7 is connected to the water inlet pipe provided with the water supply valve 8 at the bottom of the pressure tank 3, which is mainly used for draining water when the pressure tank 3 is cleaned.

During the water supply process, when water is used at a normal flow rate, the water pump of the non-negative pressure water supply equipment supplies water to the water point, and at the same time replenishes water to the pressure tank 3 through the water supply valve 8; that is, the water pump "supplies water upwards in one direction". When the water consumption suddenly increases and the water flow increases instantaneously, the pressure tank 3 immediately supplies water to the user's pipe network before the water pump starts, and then the water pump starts and the high-level water storage tank supplies water at the same time, and then only the water pump supplies water and enters the normal flow The water is circulated in this way to realize "multiple water source water supply" and eliminate the problem of insufficient instantaneous flow in the acceleration lag of the water pump. When the water flow is low, the water pump is dormant and stops running, and the water stored in the pressure tank 3 is supplied to the user's pipe network, which solves the problem of waste of electric energy when the water flow is small or zero.

Claims (4)

1. no negative pressure secondary water-supply high-pressure formula water tank, it is characterized in that: be provided with barrier film air bag (2) in the pressurized tank (3), barrier film air bag (2) is connected with air inlet port (4), pressurized tank (3) below is provided with atmospheric valve (7) and feed water valve (8), pressurized tank (3) top is provided with automatic air valve (1), and pressurized tank (3) one sides are provided with access hole (6).

2. a kind of no negative pressure secondary water-supply high-pressure formula water tank according to claim 1, it is characterized in that: described pressurized tank (3) material is a stainless steel.

3. a kind of no negative pressure secondary water-supply high-pressure formula water tank according to claim 1, it is characterized in that: described barrier film air bag (2) material is a rubber.

4. according to claim 1 or 3 described a kind of no negative pressure secondary water-supply high-pressure formula water tanks, it is characterized in that: be filled with compressed air in the described barrier film air bag (2).

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