CN201473997U - Power frequency automatic constant pressure water supply system - Google Patents

Abstract

The utility model relates to a power frequency automatic constant pressure water supply system, which comprises a pressurized pump or pressurized pump group controlled by an electric control device, and the water outlet of the pressurized pump or group communicates with the water outlet terminals of users on each floor through a main water supply pipe , it is characterized in that: the water outlet and the water inlet of the pressurized pump or pressurized pump group are connected externally by pipes to form an annular container, and the horizontal pipe of the annular container is connected to the top of the main water supply pipe through a tee, so The annular container is provided with a pressure relief opening communicating with the atmosphere. The utility model has beneficial effects: the structure of the frequency conversion water supply system is adopted, and the pressure of the pipe network is used to supply water in the way of industrial frequency control, so as to prevent the overpressure of the pipeline. Once the electronic control device is out of control, the pressure relief opening connected to the atmosphere will relieve the pressure of the pipeline, and the water pumped into the annular container by the booster pump will flow back to the water inlet of the booster pump to avoid overpressure and damage to the water supply pipeline. will cause losses to users. The system is not only safe, but also energy-saving efficiency can reach more than 90%.

Description

Power frequency automatic constant pressure water supply system

technical field

The utility model belongs to a secondary water supply system, in particular to a power frequency automatic constant pressure water supply system.

Background technique

With the continuous increase of high-rise buildings, secondary water supply has become a necessary supporting system. The secondary water supply system mainly pumps the water from the tap water pipe network into the users through the booster pump, which has solved the problem of insufficient water pressure on high floors. The secondary water supply booster pump is divided into power frequency and frequency conversion mode control work. The power frequency method is to control the booster pump to inject water into the water storage tank located on the roof or underground, and then supply water to the user through the water stored in the water storage tank. The booster pump starts to work only when the water storage tank is short of water. So power saving. However, due to the secondary pollution of the water storage tank, it is now prohibited to use it in domestic water supply, so the secondary water supply booster pump cannot use power frequency; at present, the secondary water supply system generally uses frequency conversion water supply, and the outlet of the booster pump directly passes through the water supply The main pipe (its end is sealed off) is then tapped to the water outlets of users on each floor. The booster pump is controlled by a pressure sensor, and the water supply pressure threshold of the system is preset. When the user uses water, the pressure of the system is changed, and the booster pump starts to work. The booster pump is in the state of frequent start-up work, so it consumes electricity and the efficiency of frequency conversion water supply is very low (efficiency is less than 40%). At the same time, the biggest disadvantage of this system is that once the electronic control device such as the pressure sensor is out of control, the booster pump will continue to work, resulting in serious overpressure of the water supply pipeline, resulting in pipeline damage and causing great losses to users.

Utility model content

The purpose of this utility model is to overcome the deficiencies of the above-mentioned technologies, and to provide a power frequency automatic constant pressure water supply system, which is still in the conventional frequency conversion water supply system structure at present, and uses the pressure of the pipe network to supply water by using the power frequency control method, eliminating the need for pipelines Overpressure. Not only is it safe, but the energy-saving efficiency can reach more than 90%.

In order to achieve the above purpose, the utility model adopts the following technical solutions: a power frequency automatic constant pressure water supply system, including a pressurized pump or pressurized pump group controlled by an electric control device, and the water outlet of the pressurized pump or group passes through the water supply trunk The pipe is connected with the water outlet terminals of users on each floor, and the feature is that: the water outlet and the water inlet of the pressurized pump or pressurized pump group are connected by pipes outside to form an annular container, and the horizontal pipe of the annular container passes through three It is connected to the top of the main water supply pipe, and the annular container is provided with a pressure relief opening communicated with the atmosphere.

The position of the pressure relief opening is set at the highest point of the system or above the height above the permanent pressure of the pipe network.

An air filter is sleeved on the pressure relief opening.

The electric control device is connected with the booster pump or booster pump group by using a pressure sensor or a liquid level controller.

The utility model has beneficial effects: the structure of the frequency conversion water supply system is adopted, and the pressure of the pipe network is used to supply water in the way of industrial frequency control, so as to prevent the overpressure of the pipeline. Once the electronic control device is out of control, the pressure relief opening connected to the atmosphere will relieve the pressure of the pipeline, and the water pumped into the annular container by the booster pump will flow back to the water inlet of the booster pump to avoid overpressure and damage to the water supply pipeline. will cause losses to users. The system is not only safe, but also energy-saving efficiency can reach more than 90%.

Description of drawings

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

In the figure: 1. Electric control device, 2. Booster pump, 3. Water outlet, 4. Main water supply pipe, 5. User water outlet terminal, 6. Water inlet, 7. Pipeline, 8. Ring container, 9. Three Pass, 10, pressure relief opening, 11, air filter.

Detailed ways

The specific implementation of the utility model will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

See the accompanying drawings for details, a power frequency automatic constant pressure water supply system, including a pressurized pump 2 or pressurized pump group controlled by an electronic control device 1, and the water outlet 3 of the pressurized pump or group is connected to each floor through the main water supply pipe 4 The user's water outlet terminal 5 is connected, and the water outlet of the pressurized pump or the pressurized pump group is connected to the water inlet 6 through the pipeline 7 to form an annular container 8, and the pressurized pump group will be connected in parallel before the water outlet and the water inlet The water inlet 6 is connected to an annular container 8 through a pipeline 7 on its outside. The horizontal pipe of the annular container is connected to the top of the main water supply pipe through a tee 9, and a pressure relief opening 10 communicating with the atmosphere is provided on the annular container. The position of the pressure relief opening is set at the highest point of the system or above the height above the permanent pressure of the pipe network. Secondary water supply regulations: The secondary water supply should ensure that the pressure of the water supply pipe network is 0.25MPb, which is equivalent to the height of ±0 from the building is 25 meters, so the position of the pressure relief opening can also be set at a place greater than 25 meters. An air filter 11 is sleeved on the pressure relief opening. The electric control device is connected with the booster pump or booster pump group by using a pressure sensor or a liquid level controller. The cross-sectional area of the pipeline 7 is greater than or equal to the cross-sectional area of the water outlet pipe of the pump group, and if it is a pump group, the cross-sectional area of the pipeline 7 is greater than or equal to the sum of the cross-sectional areas of the water outlet pipes of the pump group.

Working principle: The pressure setting of this system is actually closely related to the height of the user end. When the water level does not exceed the height of the user end, that is, the ring-shaped container plays the role of a water storage tank and is equivalent to the top of the main water supply pipe being sealed. At this time, it is in a normal water supply working state, and the start and stop of the water pump are controlled by the electric control device. If the water pressure at the user end is higher than the set value, the water at the top of the main water supply pipe will flow back to the water source end along the annular container. Because the pipeline has an opening, the pipeline is safe from overpressure.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the structure of the present utility model in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model still belong to the scope of the technical solution of the present utility model.

Claims (4)

1. automatically pressure-regulating industrial-frequensy water supply system, comprise by the force (forcing) pump of electric control gear control or the delivery port of force (forcing) pump group, force (forcing) pump or group and being communicated with user's outlet terminal of each floor by the water supply main pipe, it is characterized in that: the delivery port of described force (forcing) pump or force (forcing) pump group is connected in the form of a ring container in its outside by pipeline with water inlet, described annular container horizontal pipe is connected with water supply main pipe top by threeway, and described annular container is provided with the pressure relief openings that is communicated with atmosphere.

2. automatically pressure-regulating industrial-frequensy water supply system according to claim 1 is characterized in that: described pressure relief openings position is located at the peak of system or is higher than on the standing height value of ductwork pressure.

3. automatically pressure-regulating industrial-frequensy water supply system according to claim 1 is characterized in that: socket air filter on the described pressure relief openings.

4. automatically pressure-regulating industrial-frequensy water supply system according to claim 1 is characterized in that: described electric control gear adopts pressure sensor or fluid level controller are connected with force (forcing) pump or force (forcing) pump group.

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