CN209855950U - Pressure release energy recycling system - Google Patents

Abstract

The utility model discloses a pressure relief energy recycling system, which comprises a water supply pipeline, a minimum flow valve and a water drain pipeline, wherein the minimum flow valve is connected on the water supply pipeline, and the inlet of the water drain pipeline is connected with a bypass pipe of the minimum flow valve; the energy recycling device is connected to the water drain pipeline, when the bypass pipe of the minimum flow valve is opened, pressure water in the water supply pipeline flows into the water drain pipeline through the bypass pipe of the minimum flow valve and drives the energy recycling device to generate electricity, and the energy recycling device supplies power to a power supply line and charges the storage battery after generating electricity. The system generates electricity by using the water with the minimum pressure released by the flow valve, has high energy utilization efficiency and low operation cost, and accords with the national energy-saving and emission-reducing policy.

Description

Pressure release energy recycling system

Technical Field

The utility model relates to a plumbing technical field specifically relates to a pressure release energy recuperation utilizes system.

Background

As shown in fig. 1, the existing water supply system includes a water pump 1, a water supply pipeline 2, a water suction pipeline 3 and a water discharge pipeline 4, wherein the water suction pipeline 3 is connected to an inlet of the water pump 1, and the water supply pipeline 2 is connected to an outlet of the water pump 1; for the safe use of the water pump 1, a minimum flow valve 5 is usually arranged on the water supply pipeline 2, and the inlet of the water discharge pipeline 4 is connected with a bypass pipe of the minimum flow valve 5; the minimum flow valve 5 and the corresponding water discharge pipeline 4 are used for ensuring the normal operation of a drainage system, the minimum flow valve 5 can be controlled to be opened or closed by pressure, when the pressure exceeds a certain set value (set according to the field condition), the minimum flow valve 5 is opened, and the pressure water of the water supply pipeline 2 is released by a bypass pipe of the minimum flow valve and the matched water discharge pipeline 4 (particularly, when the water pump 1 is normally operated, water is not supplied to the outside, and the pump is not stopped, the normal and continuous operation of the water pump can be ensured); when the pressure is below a certain set value, the minimum flow valve 5 is closed. In the prior art, the part of energy at the bypass pipeline flowing out of the minimum flow valve 5 is generally subjected to pressure reduction treatment through the small-flow water discharge pipeline 4 and then returned to the process system or directly exhausted, and pressure relief and evacuation are usually performed through the orifice plate 100. In fact, the energy lost in the minimum flow valve in many water supply systems is considerable, and at present, the energy is directly wasted, so that the energy utilization rate is reduced, and the electricity consumption of users is high and is very unfortunately; meanwhile, the whole water pump unit is provided with some low-voltage equipment such as a motor fan, an oil pump, a heater, an I/O board card of a DCS in the central control chamber and the PLC, and the PLC needs to be additionally connected with a low-voltage line except a main cable for power supply. Therefore, how to effectively utilize the energy released by the minimum flow valve, especially to provide energy for low-voltage equipment in the pump unit so as to achieve the purposes of energy conservation and emission reduction, is a technical problem to be solved at present.

SUMMERY OF THE UTILITY MODEL

The above-mentioned not enough to prior art exists, the utility model aims to provide a pressure release energy recuperation utilizes system, this pressure release energy recuperation utilizes system has improved energy availability factor, has reduced user's operation cost, energy saving and emission reduction.

In order to achieve the above object, the utility model adopts the following technical scheme:

a pressure relief energy recycling system comprises a water supply pipeline, a minimum flow valve and a water drain pipeline, wherein the minimum flow valve is connected to the water supply pipeline, and an inlet of the water drain pipeline is connected with a bypass pipe of the minimum flow valve; the energy recycling device is connected to the water drain pipeline, when the bypass pipe of the minimum flow valve is opened, pressure water in the water supply pipeline flows into the water drain pipeline through the bypass pipe of the minimum flow valve and drives the energy recycling device to generate electricity, and the energy recycling device supplies power to a power supply line and charges the storage battery after generating electricity.

The system recycles the energy flowing out of the bypass pipe of the minimum flow valve, converts the recycled energy into electric energy and accesses the electric energy into a power supply line to supply power for low-voltage equipment of the pump unit, and simultaneously flushes redundant electric energy into a storage battery for a user to select and use.

Furthermore, the energy recycling device comprises a driving part and a power generation part, wherein the driving part comprises a shell, a main shaft and a water wheel, the main shaft and the water wheel are both arranged in the shell, the water wheel is fixed on the main shaft, the main shaft is rotationally connected with the shell, the shell is provided with a water inlet and a water outlet, and pressure water flows in from the water inlet and drives the water wheel to drive the main shaft to rotate and then flows out from the water outlet; the power generation part comprises a stator winding and a rotor winding, the rotor winding is fixed on the main shaft and located on the inner side of the stator winding, the water wheel drives the rotor winding to rotate through the main shaft after rotating, and the power generation part generates power after the rotor winding rotates.

And further, an electric regulating valve for regulating the flow is arranged on a water discharge pipeline between the minimum flow valve and the water inlet.

Further, the storage battery is a lithium battery.

Compared with the prior art, the beneficial effects of the utility model are mainly embodied in that:

1. the system recycles the energy flowing out of the bypass pipe of the minimum flow valve, converts the recycled energy into electric energy and accesses the electric energy into a power supply line to supply power for the low-voltage equipment of the pump unit, and simultaneously flushes redundant electric energy into the storage battery for the user to select and use, so that the energy utilization efficiency is improved, the operation cost of the user is reduced, and the national energy-saving and emission-reducing policy is met;

2. in the system, the energy recycling device is arranged in the form of a miniature water wheel type generator, so that the system is simple and practical in structure and easy to produce and manufacture;

3. the electric control valve between the minimum flow valve and the water inlet can be in linkage control with a drain pipe pressure monitoring system, the opening degree of the electric control valve is adjusted in real time, so that the water inlet water inflow of the driving part can be adjusted in real time, the stable operation of the driving part is guaranteed, and the stable power generation of the power generation part is facilitated.

Drawings

FIG. 1 is a schematic view of a conventional water supply system;

fig. 2 is a schematic view of a pressure relief energy recycling system according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of the energy recycling device.

In the attached drawings, 1-a water pump; 2-water supply pipeline; 3-a water suction pipeline; 4-a water discharge pipeline; 5-minimum flow valve; 6-an energy recovery and utilization device; 7-a storage battery; 8-leading out of the energy recycling device; 9-outgoing of the storage battery;

61-a housing; 62-a water wheel; 63-a main shaft; 64-a water inlet; 65-a water outlet; 66-rotor windings; 67-stator windings;

100-throttling means.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 2, the pressure relief energy recycling system of the present embodiment comprises a water supply pipeline 2, a minimum flow valve 5, a water discharge pipeline 4, an energy recycling device 6 and a storage battery 7 (the pressure relief energy recycling system is connected to the water supply pipeline 2 of a water supply system, the existing water supply system further comprises a water pump 1 and a water suction pipeline 3, the water suction pipeline 3 is connected to an inlet of the water pump 1, the water supply pipeline 2 is connected to an outlet of the water pump 1, when the system is applied to a high pressure descaling system of a rolling mill, an energy storage device is further arranged on an outlet side of the water supply pipeline 2 to store pressure water), wherein the minimum flow valve 5 is connected to the water supply pipeline 2, and an inlet of the water discharge pipeline 4 is connected to a bypass pipe of the; the energy recycling device 6 is connected to the water drain pipeline 4, when the bypass pipe of the minimum flow valve 5 is opened, pressure water in the water supply pipeline 2 flows into the water drain pipeline 4 through the bypass pipe of the minimum flow valve 5 and drives the energy recycling device 6 to generate electricity, and the energy recycling device 6 supplies power to a power supply line and charges the storage battery 7 after generating electricity (the power supply line can be independently supplied with power or the storage battery 7 is charged, and the energy recycling device is determined according to actual generated energy). The system recycles the energy flowing out of the bypass pipe of the minimum flow valve 5, converts the recycled energy into electric energy and accesses the electric energy into a power supply line to supply power for low-voltage equipment of the pump unit (for reliability, the electricity generated by the system can be used as a main power supply, and an external network power supply is accessed as a standby power supply at the same time), and simultaneously flushes redundant electric energy into a storage battery for users to select and use, so that the energy utilization efficiency is improved, the electricity consumption expense of the users is reduced, and the system conforms to the national energy-saving emission-reducing policy.

As shown in fig. 3, in the present embodiment, the energy recovery and utilization device 6 includes a driving portion and a power generation portion, the driving portion includes a housing 61, a main shaft 63 and a water wheel 62, the main shaft 63 and the water wheel 62 are both disposed in the housing 61, the water wheel 62 is fixed on the main shaft 63, the main shaft 63 is rotatably connected with the housing 61, the housing 61 is provided with a water inlet 64 and a water outlet 65, and pressure water flows in from the water inlet 64 and drives the water wheel 62 to drive the main shaft 63 to rotate and then flows out from the water outlet 65; the power generation part comprises a stator winding 67 and a rotor winding 66, the rotor winding 66 is fixed on the main shaft 63 and is positioned on the inner side of the stator winding 67, the rotor winding 66 is driven by the main shaft 63 to rotate after the water wheel 62 rotates, and the power generation part generates power (the stator winding 67 or the rotor winding 66 outputs current) after the rotor winding 66 rotates. In the system, the energy recycling device is directly arranged in the form of a miniature water wheel type generator, so that the system has a simple and practical structure and is easy to produce and manufacture; specifically, in practical application, the energy recovery and utilization device 6 may also be set in other forms, such as a form of an energy accumulator and a micro-hydro energy generator, and the energy accumulator is used to accumulate energy first, and the micro-hydro energy generator is driven to generate power when the energy of the energy accumulator is more.

As shown in fig. 2 and 3, in the present embodiment, an electric control valve (not shown) for adjusting the flow rate is provided on the water discharge pipe 4 between the minimum flow valve 5 and the water inlet 64. Specifically, among the practical application, electrical control valve can with drain pipe pressure monitoring system interlocking control, adjust electrical control valve's degree of opening in real time, just so can adjust the water inlet 64 inflow of drive division in real time, guarantee drive division steady operation, be favorable to the stable electricity generation of power generation division. Taking a steel mill descaling system as an example, the system can stably recycle energy through adjusting the throttling coefficient with the opening of the electric control valve according to different use working conditions of the water pump 1 (the inlet flow of the energy recycling device 6 and the pressure value of the energy accumulator are subjected to linkage feedback to achieve real-time adjustment of the flow of the water inlet according to different working conditions, and stable operation of the system is guaranteed).

As shown in fig. 2, in the present embodiment, the storage battery is a lithium battery 7, and the energy recycling device 6 generates ac power and then directly supplies power to the low-voltage device after passing through the rectifier and the inverter in sequence, or charges the storage battery 7 through the rectifier, the inverter and a charging controller (not shown in the figure) in sequence. Specifically, after the system generates electricity, the outgoing line 8 of the energy recycling device is connected into a power supply line to supply power to low-voltage equipment in the system, such as a motor fan, an oil pump, a heater, an I/O board card of a DCS in a central control room, a PLC and the like, the storage battery 7 can be charged, and the storage battery 7 can provide selective power supply for users according to actual needs through the outgoing line 9 of the storage battery. The system can simplify the control systems of all user sites, greatly saves the operation cost and subsequent unnecessary expenses, and even plays a role in promoting energy use and environmental protection.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the applicant has described the present invention in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all the technical solutions should be covered by the scope of the claims of the present invention.

Claims (4)

1. A pressure relief energy recycling system comprises a water supply pipeline, a minimum flow valve and a water drain pipeline, wherein the minimum flow valve is connected to the water supply pipeline, and an inlet of the water drain pipeline is connected with a bypass pipe of the minimum flow valve; the method is characterized in that: the energy recycling device is connected to the water drain pipeline, when the bypass pipe of the minimum flow valve is opened, pressure water in the water supply pipeline flows into the water drain pipeline through the bypass pipe of the minimum flow valve and drives the energy recycling device to generate electricity, and the energy recycling device supplies power to a power supply line and charges the storage battery after generating electricity.

2. The pressure relief energy recovery system according to claim 1, wherein: the energy recycling device comprises a driving part and a power generation part, wherein the driving part comprises a shell, a main shaft and a water wheel, the main shaft and the water wheel are both arranged in the shell, the water wheel is fixed on the main shaft, the main shaft is rotationally connected with the shell, the shell is provided with a water inlet and a water outlet, and pressure water flows in from the water inlet and drives the water wheel to drive the main shaft to rotate and then flows out from the water outlet; the power generation part comprises a stator winding and a rotor winding, the rotor winding is fixed on the main shaft and located on the inner side of the stator winding, the water wheel drives the rotor winding to rotate through the main shaft after rotating, and the power generation part generates power after the rotor winding rotates.

3. The pressure relief energy recovery system according to claim 2, wherein: an electric regulating valve for regulating the flow is arranged on the water drain pipeline between the minimum flow valve and the water inlet.

4. The pressure relief energy recovery system according to claim 1, wherein: the storage battery is a lithium battery.