CN201738387U - Constant-pressure and variable-frequency water supply device - Google Patents

Abstract

The utility model relates to a water supply and drainage device, in particular to a constant-pressure and variable-frequency water supply device. The existing constant-pressure and variable-frequency water supply device has the problems that the operation is unstable, the energy is not saved, the system maintenance is difficult and the like. Through the arrangement of a pressure sensor and full automatic variable-frequency control equipment on a water outlet of a water pump, the constant-pressure and variable-frequency water supply device provided by the utility model achieves the purposes of stable operation, energy saving and simple system maintenance.

Description

A constant pressure variable frequency water supply device

technical field

The utility model relates to water supply and drainage equipment, in particular to a constant pressure frequency conversion water supply device.

Background technique

At present, my country's high-rise water supply equipment has developed several stages, from the traditional roof water tank water supply to the most widely used constant pressure frequency conversion water supply equipment, and even now a popular non-negative pressure water supply equipment. Due to the regional limitations and application limitations of non-negative pressure water supply equipment, the more economical and practical ones are frequency conversion and constant pressure water supply equipment. Therefore, how to make this equipment better used, more stable in operation, and better energy-saving is an issue for everyone. A problem that pump manufacturers need to solve.

At present, there are too many types of frequency conversion water supply products on the market, and there are many manufacturers, but there are not many manufacturers that truly realize complete sets of equipment. Many companies buy water pumps and simply make a set of control cabinets to control them, even if it is a set. A set of equipment. This can neither guarantee the stable operation of the system, nor have a good energy-saving effect. The most important thing for high-rise water supply is undoubtedly stable operating pressure and energy saving. Considering its importance to the safety of water supply, the system maintenance is simple, and automatic operation is definitely necessary. a basic condition.

Contents of the invention

The utility model provides a fully automatic constant pressure frequency conversion water supply device with stable operation, energy saving and simple system maintenance.

The technical scheme that realizes the utility model purpose is:

A constant pressure variable frequency water supply device, including a pressure tank, a water pump, a pipeline, a base plate and a frequency conversion control box, the pipeline and the water pump are installed on the base plate, the water inlet of the water pump is connected to the water source, the pressure tank is connected to the water outlet of the water pump, and the water outlet is connected to the There is a pressure sensor, and the frequency conversion control box is equipped with a fully automatic frequency conversion control equipment combining AC frequency conversion speed regulation technology and programmable control technology.

The frequency conversion control box is connected with the water pump through a power cable.

The water pump is a vertical multistage pump set.

The vertical multistage pump set consists of multiple water pumps connected in parallel.

The fully automatic frequency conversion control equipment is responsible for the automatic control of the entire water supply process, making the system stable, and responsible for the logic functions of all water pump switching.

Vertical multi-stage pumps efficiently transport water from low to high.

The pressure sensor is used to detect the actual pressure at the user end, so as to provide a feedback signal to the automatic frequency conversion control equipment, so as to control the increase or decrease of the speed of the water pump.

The utility model can replace water towers, high-level water tanks and traditional pressure tank water supply devices, and is suitable for life and production water supply in various types of water plants, pressurization stations, hotels, residential quarters and other high-rise buildings.

The beneficial effects of the utility model are:

1. Fully automatic frequency conversion control equipment, when the system uses water, it will automatically start, and when no water is used, the system will automatically stop, and it can also realize the normal shutdown of the system in the case of small flow leakage, so as to better protect The water pump makes the system run more safely. In the system, in order to avoid the frequent start and stop of the water pump.

2. In the past, many products were shut down by the dormancy function of the inverter itself. In view of the characteristics of the water conservancy curve of the water pump, the water pump does not enter the dormant state in many cases, so the water pump does not stop automatically. This product completely solves this problem. The pump automatically detects when there is no water, and automatically stops after a delay.

3. In the past, the water shortage protection of the water pump can only be realized through the float switch signal connected to the water tank. This product completely solves this problem. It can automatically judge whether the water pump is short of water by combining the water conservancy curve of the water pump and the operation status of the water pump. It achieves the automatic protection function, and also has the signal protection function of the water tank float switch.

4. It is difficult for previous products to solve the problem of non-stop system due to small flow leakage of the system, so that the system can save energy to the maximum extent;

5. In the past, when the system required a large flow, the system pressure fluctuated greatly when the water pump was switched. This system minimizes this fluctuation by at least 50%.

Description of drawings

Fig. 1 is the structural representation of the utility model

Fig. 2 is the side view structure schematic diagram of the utility model

Detailed ways

Figure 1 and Figure 2 show an embodiment of the present utility model, a constant pressure variable frequency water supply device, including a pressure tank 1, a vertical multistage pump group 2 composed of multiple water pumps connected in parallel, pipelines, a bottom plate 3 and The frequency conversion control box 4, the pipeline and the pump group 2 are installed on the bottom plate 3, the water inlet of the water pump is connected to the water source, the pressure tank 1 is connected to the water outlet of the water pump, the pressure sensor 5 is arranged on the water outlet, and the frequency conversion control box 4 is equipped with an AC A fully automatic frequency conversion control device combining frequency conversion speed regulation technology and programmable control technology. The frequency conversion control box 4 is connected to the water pump through a power cable.

The fully automatic frequency conversion control equipment is responsible for the automatic control of the entire water supply process, making the system stable, and responsible for the logic functions of all water pump switching.

The vertical multistage pump group 2 efficiently transports water from a low level to a high level.

The pressure sensor is used to detect the actual pressure at the user end, so as to provide a feedback signal to the automatic frequency conversion control equipment, so as to control the increase or decrease of the speed of the water pump.

The utility model can replace water towers, high-level water tanks and traditional pressure tank water supply devices, and is suitable for life and production water supply in various types of water plants, pressurization stations, hotels, residential quarters and other high-rise buildings.

The utility model starts automatically when the system uses water, and automatically stops when the system does not use water. It can also realize the normal shutdown of the system in the case of small flow leakage, so as to better protect the water pump and make the system run Safer, in the system, in order to avoid the frequent start and stop of the water pump.

Claims (4)

1. constant pressure frequency conversion water supply installation, comprise pressurized tank, water pump, pipeline, base plate and variable frequency control case, it is characterized by pipeline and water pump is installed on the base plate, the water inlet of water pump connects the water source, pressurized tank connects the delivery port of water pump, delivery port is provided with pressure sensor, is provided with the full-automatic frequency conversion control appliance that ac variable speed technology and Controlling Technique for Programming combine in the variable frequency control case.

2. constant pressure frequency conversion water supply installation according to claim 1 is characterized by described variable frequency control case and is connected with water pump by power cable.

3. constant pressure frequency conversion water supply installation according to claim 1 and 2, it is characterized by described water pump is the MODEL VERTICAL MULTISTAGE PUMP group.

4. constant pressure frequency conversion water supply installation according to claim 3 is characterized by the MODEL VERTICAL MULTISTAGE PUMP group and is composed in parallel by a plurality of water pumps.

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