CN215977500U

CN215977500U - Pressure reducing device for recovering energy of water supply system

Info

Publication number: CN215977500U
Application number: CN202121995228.0U
Authority: CN
Inventors: 严双飞; 袁文麒
Original assignee: Shanghai Yunshui Engineering Design Co ltd
Current assignee: Shanghai Yunshui Engineering Design Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-03-08
Anticipated expiration: 2031-08-24

Abstract

The utility model relates to the technical field of energy recovery and pressure reduction of a water supply system, in particular to a pressure reducing device for recovering energy of the water supply system, which comprises a water inlet pipe, a water outlet pipe, a power generation assembly and a first pressure gauge, wherein the power generation assembly is arranged between the water inlet pipe and the water outlet pipe; the second pressure gauge is arranged on the water outlet pipe; and the electric regulating valve is arranged at the downstream of the second pressure gauge and used for regulating the pressure of the inlet water and the outlet water. The pressure reducing device for recovering energy of the water supply system effectively prevents the problems that the pressure reducing device of the existing water supply system wastes energy and is not energy-saving. The energy-saving effect of the system is improved, and the operation optimization of the system is guaranteed.

Description

Pressure reducing device for recovering energy of water supply system

Technical Field

The utility model relates to the technical field of energy recovery and pressure reduction of a water supply system, in particular to a pressure reducing device for recovering energy of the water supply system.

Background

In the design process of a water supply system, when water supply pressure cannot meet the requirements of users, a water pump is often required to be used for pressurization, and in the design and calculation process of the pump lift, the lift of the pressurizing pump is selected according to the water pressure requirement of the worst control point, so that the water pressure of a water supply area close to a water supply pump room is often caused to exceed the standard, and if pressure reduction measures are not taken, water using equipment and appliances are damaged.

At present, aiming at the situation that the water pressure of the local water supply exceeds the standard, the conventional operation is to arrange a pressure reducing device, the pressure reducing device generally adopted is a pressure reducing valve, the excessive energy is eliminated by reducing the popular section area of the fluid, increasing the local resistance and consuming the kinetic energy of the water flow, and the water supply pressure is reduced to a reasonable range. In practical engineering application, the pressure to be reduced is large, but due to requirements such as the pressure reduction ratio of the pressure reducing valve, a series pressure reducing mode or a pressure reducing mode adopting a double-stage pressure reducing valve is often required to be arranged, so that the pressure is reduced to a reasonable range, and the normal operation of the system is ensured.

The conventional pressure reduction measures are mainly arranged, and the following problems exist in the operation process:

the decompression principle of the pressure reducing valve is that redundant energy is directly eliminated by increasing local resistance and head loss, so that the energy increased by water flow through a water pump cannot be utilized, and the phenomenon of energy waste is ubiquitous.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects of the prior art and provides a device for reducing the pressure of local water supply by an energy recovery mode.

In order to achieve the purpose, the pressure reducing device for recovering energy of the water supply system comprises a water inlet pipe, a water outlet pipe, a power generation assembly and a first pressure gauge, wherein the power generation assembly is arranged between the water inlet pipe and the water outlet pipe; the second pressure gauge is arranged on the water outlet pipe; and the electric regulating valve is arranged at the downstream of the second pressure gauge and used for regulating the pressure of the inlet water and the outlet water.

The utility model also has the following preferable technical scheme:

furthermore, the power generation assembly comprises an impeller, an impeller shell fixing device, a power generator and a storage battery, wherein an impeller rotating shaft is arranged on the impeller and connected with a rotor of the power generator.

Furthermore, a speed regulating device is arranged at the joint of the impeller rotating shaft and the generator rotor.

Furthermore, the water inlet pipe and the water outlet pipe are both provided with connecting devices for connecting with a water supply system.

Beneficial effects of the utility model

The pressure reducing device for recovering energy of the water supply system has the advantage of effectively preventing the problems of energy waste and energy saving of the pressure reducing device of the existing water supply system. The energy-saving effect of the system is improved, and the operation optimization of the system is guaranteed.

Drawings

FIG. 1 is a schematic diagram illustrating the construction of a pressure relief device for recovering energy from a water supply system according to the present invention;

FIG. 2 is a schematic diagram illustrating a top view of a pressure relief device for recovering energy from a water supply system in accordance with the present invention;

FIG. 3 is an exemplary illustration of a pressure relief device for recovering energy from a water supply system in accordance with the present invention;

in the figure: 1. a water inlet pipe; 2. a water outlet pipe; 3. a water inlet pressure gauge; 4. a water outlet pressure gauge; 5. an impeller housing fixing device; 6. an impeller; 7. an impeller shaft; 8. a speed regulating device; 9. a generator rotor; 10. an electric control valve; 11. a generator; 12. a storage battery; 13. a water inlet pipe connecting device; 14. the water outlet pipe is connected with the device.

Detailed Description

In order to make the technical solutions adopted by the present invention better understood by those skilled in the art, the technical solutions adopted by the present application are further described below with reference to the accompanying drawings and examples.

Referring to fig. 1, 2 and 3, the device of the utility model provides a pressure reduction measure device for energy recovery, which comprises a water inlet pipe 1; 2. a water outlet pipe; 3. a water inlet pressure gauge; 4. a water outlet pressure gauge; 5. an impeller housing fixing device; 6. an impeller; 7. an impeller shaft; 8. a speed regulating device; 9. a generator rotor; 10. an electric control valve; 11. a generator; 12. a storage battery; 13. a water inlet pipe connecting device; 14. a water outlet pipe connecting device and the like 14.

In the embodiment, the impeller 6 is fixed in the impeller shell fixing device 5 and is connected with a water supply system pipeline through a water inlet pipe connecting device 13 and a water outlet pipe connecting device 14 in the operation process; water flow enters the device through the water inlet pipe 1, and the mechanical energy of the water flow is converted into the kinetic energy of the impeller 6 through the flow guiding effect of the impeller shell fixing device 5, so that the impeller 6 rotates; impeller pivot 7 and impeller 6 synchronous revolution, impeller pivot 7 is connected with generator rotor 9 through speed adjusting device 8, and generator rotor 9 is rotatory to be changed the mechanical energy of rivers into the electric energy of generator 11, and the electric energy that generator 11 produced is timely to be stored in battery 12, guarantees under the prerequisite condition of decompression requirement, can retrieve the energy in the water supply system.

The water inlet pressure gauge 3 and the water outlet pressure gauge 4 are arranged in the embodiment, and the pressure values of inlet water and outlet water are timely detected and fed back in the operation process of the device.

In this embodiment, an impeller casing fixing device 5 is provided, which has the functions of fixing the impeller 6 and guiding the inflow water.

In the embodiment, the speed regulating device 8 is arranged, and the rotating speed of the impeller rotating shaft 7 is not fixed, so that the generator rotor 9 is kept in a rated working condition rotating speed range through the connection action of the speed regulating device 8, and the normal operation of the generator is ensured.

Set up electrical control valve 10 in this embodiment, through the numerical value change of intake pressure gauge 3 and play water pressure gauge 4, the degree of opening of timely control electrical control valve 10 further guarantees that the pressure of going out water satisfies the requirement of system.

In the embodiment, the storage battery 12 is arranged to timely store the electric energy generated by the generator 11, so as to ensure the energy recovery effect.

According to the embodiment, the utility model adopts a pipeline embedded structure, the two ends of the device are provided with connecting interfaces which are used for connecting with a water supply pipeline, the impeller is arranged in the device, water flows into the device through a water inlet pipe of the device, the kinetic energy of liquid is converted into static pressure energy, the static pressure energy is converted into the kinetic energy of a rotor through blades, the impeller rotates, a rotating shaft of the impeller is connected with a rotor of a generator through a speed regulating device, the rotor is driven to rotate and cut a stator magnetic coil in the generator, current is generated in the coil of the generator by utilizing the electromagnetic induction principle, so that the mechanical energy of the water flows is converted into the electric energy of the generator, the electric energy generated by the generator is timely stored in a storage battery, and the water flows out finally. In the embodiment, pressure gauges are arranged at the water inlet and outlet sections, so that the water supply pressure in front of and behind the pressure reducing device is monitored in real time; the electric control valve is arranged behind the water outlet pressure gauge, and the opening degree of the electric control valve can be controlled according to the value requirement of the water outlet pressure gauge, so that the pressure requirement of water outlet is ensured.

Compared with the prior art, the utility model not only can play a role of safe pressure reduction, but also can fully recover the residual energy in the water flow. The device can be connected with a water supply system pipeline by arranging a water inlet and outlet pipe connecting device; the impeller and the speed regulating device can rotate by utilizing the mechanical energy of water flow, are connected with the generator rotor and ensure that the input rotating speed of the generator rotor is at a working point; a generator is arranged, and a rotor of the generator is connected with a speed regulating device to convert the mechanical energy of the rotating shaft of the impeller into electric energy; the storage battery is arranged, so that the electric energy generated by the generator can be timely accumulated; a water inlet and outlet pipeline pressure gauge is arranged, so that the water inlet and outlet pressure can be monitored at any time and fed back to the electric regulating valve mechanism; the electric regulating valve is arranged, so that the size of the water outlet flow channel can be adjusted in time according to the feedback of the numerical value of the pressure gauge, and the pressure requirement of water outlet is guaranteed. The energy recovery system provides a solution for energy recovery in the actual operation process of the water supply pipeline, ensures that the pipeline can recover energy to the maximum extent under the decompression condition, increases the application range of water supply energy recovery, and plays a positive role in saving energy of a water supply system.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be within the technical scope of the present invention, and the technical solutions and novel concepts according to the present invention with the equivalent replacement or change should be covered within the scope of the present invention.

Claims

1. A pressure reducing device for recovering energy of a water supply system comprises a water inlet pipe, a water outlet pipe and a power generation assembly arranged between the water inlet pipe and the water outlet pipe, and is characterized by also comprising a first pressure gauge arranged on the water inlet pipe; the second pressure gauge is arranged on the water outlet pipe; and the electric regulating valve is arranged at the downstream of the second pressure gauge and used for regulating the pressure of the inlet water and the outlet water.

2. The pressure reducing device for recovering energy of a water supply system as claimed in claim 1, wherein the power generation assembly comprises an impeller, an impeller casing fixing device, a generator and a storage battery, and an impeller rotating shaft arranged on the impeller is connected with a rotor of the generator.

3. The pressure reducing device for recovering energy of a water supply system as claimed in claim 2, wherein a speed regulating device is arranged at the connection part of the rotating shaft of the impeller and the rotor of the generator.

4. A water supply system energy recovery pressure relief device as claimed in any one of claims 1 to 3 wherein said inlet and outlet pipes are provided with connection means for connection to a water supply system.