Small fluid potential energy recovery power generation facility for sewage treatment plant

Abstract

The utility model belongs to the field of sewage treatment auxiliary equipment, and particularly relates to a small fluid potential energy recovery power generation facility for a sewage treatment plant, which comprises a high-liquid-level water tank, a water outlet pipe, a water turbine, a power generator and low-power electric equipment, and is characterized in that the upper end of the water outlet pipe is connected to the wall of the high-liquid-level water tank close to the top of the high-liquid-level water tank, and the lower end of the water outlet pipe is connected with the water turbine; the water turbine comprises a main shaft, one end of the main shaft is connected with a plurality of blades which are circumferentially and uniformly distributed on the main shaft, the other end of the main shaft is connected with the generator, the generator is connected with the low-power electric equipment, water in the high-liquid-level water tank enters the water turbine through a water outlet pipe to drive the blades to rotate, and the generator generates electricity and supplies power to the low-power electric equipment; the device can generate electricity and store the electricity by using potential energy of water, provides a power supply for low-power electric equipment of a sewage treatment plant, reduces the consumption of municipal electric energy, reduces the operation cost of the sewage treatment plant, and realizes consumption reduction and efficiency improvement.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment auxiliary equipment, specifically relating to a small fluid potential energy recovery and power generation facility for wastewater treatment plants. Background Technology

[0002] As is well known, the basic principle of hydropower is to utilize the difference in water level to generate electricity in conjunction with a turbine generator. That is, to use the potential energy of water to convert it into the mechanical energy of the turbine, and then use the mechanical energy to drive the generator to obtain electricity. In sewage treatment plants, there is often a water level difference of several meters or even higher between the sedimentation tanks and disinfection tanks, the discharge metering channels and the receiving water bodies. When the treated water flows from a high place to a low place, the hydraulic potential energy generated is not utilized effectively. Utility Model Content

[0003] The purpose of this invention is to provide a small-scale fluid potential energy recovery and power generation facility for sewage treatment plants, in order to solve the problem that the hydraulic potential energy generated when water flows from a high place to a low place in existing sewage treatment plants is not rationally utilized.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] A small-scale fluid potential energy recovery power generation facility for a wastewater treatment plant includes a high-level water tank, an outlet pipe, a water turbine, a generator, and low-power electrical equipment. The upper end of the outlet pipe is connected to the tank wall near the top of the high-level water tank, and the lower end of the outlet pipe is connected to the water turbine. The water turbine includes a main shaft, one end of which is connected to multiple blades that are evenly distributed circumferentially on the main shaft. The other end of the main shaft is connected to the generator, which is connected to the low-power electrical equipment. Water in the high-level water tank enters the water turbine through the outlet pipe, driving the blades to rotate, which in turn generates electricity and supplies power to the low-power electrical equipment.

[0006] Furthermore, the turbine is an axial flow turbine, which includes a volute, a main shaft is set on the central axis of the volute, and a drain pipe is connected to the volute for discharging or transporting water to a subsequent treatment unit.

[0007] Furthermore, a distribution box is connected between the generator and the low-power electrical equipment.

[0008] Furthermore, the lower end of the outlet pipe is provided with an inlet pipe and a discharge pipe. The inlet pipe is connected to the volute of the axial flow turbine, and the discharge pipe is used to discharge water or transport it to the subsequent treatment unit. Both the inlet pipe and the discharge pipe are equipped with switch valves.

[0009] Furthermore, the blades are made of stainless steel corrosion-resistant material.

[0010] Furthermore, the high-level water tank is a sedimentation tank, a disinfection tank, or a main discharge outlet.

[0011] Furthermore, the low-power electrical equipment includes low-power mixing equipment and lighting equipment.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] 1. This utility model installs a water turbine and generator after the high-level water tank in the sewage treatment plant, using the potential energy of water to generate and store electricity. This provides power for the low-power electrical equipment in the sewage treatment plant, reduces the consumption of municipal electricity, lowers the operating cost of the sewage treatment plant, and achieves energy saving and efficiency improvement.

[0014] 2. This utility model places the water turbine after the sedimentation tank, disinfection tank, or main outlet where the height difference is permissible. This can avoid blockage of the sewage pipes and affect the flow of sewage in the pipes. It can also reduce the impact of particulate matter in the sewage on the water turbine. The turbine blades are made of stainless steel corrosion-resistant material to ensure the service life of the water turbine, reduce the maintenance and replacement of power generation facilities, and save costs.

[0015] 3. The power generation facility of this utility model is small in size, simple in structure, and convenient in maintenance and management. It does not require large-scale earthwork and is easy to construct and put into practical use. It utilizes the principle of hydropower generation, which is advanced, mature, reliable and widely used. The power generation process makes full use of the potential energy of water and does not require the consumption of other energy. In addition, large sewage treatment plants usually produce and operate continuously, which can provide a continuous source of power for the generator. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0017] The following detailed description illustrates the specific implementation method:

[0018] The reference numerals in the accompanying drawings include:

[0019] 1. High-level water tank, 2. Outlet pipe, 21. Inlet pipe, 22. Outlet pipe, 23. Switch valve, 23. Axial flow turbine, 31. Volute, 32. Main shaft, 33. Blades, 4. Generator, 5. Distribution box, 6. Small power electrical equipment, 7. Drainage pipe.

[0020] Example

[0021] like Figure 1As shown, a small-scale fluid potential energy recovery power generation facility for a wastewater treatment plant includes a high-level water tank 1, an outlet pipe 2, a water turbine, a generator 4, a distribution box 5, low-power electrical equipment 6, and a drain pipe 7. In this embodiment, the high-level water tank 1 is a sedimentation tank, a disinfection tank, or a main outlet. The upper end of the outlet pipe 2 is connected to the tank wall near the top of the high-level water tank 1. The lower end of the outlet pipe 2 is provided with an inlet pipe 21 and a discharge pipe 22. Both the inlet pipe 21 and the discharge pipe 22 are equipped with switch valves 23. The inlet pipe 21 is connected to the water turbine, and the discharge pipe 22 is used to discharge water from the high-level water tank 1 or transport it to subsequent treatment units. By placing the water turbine after the sedimentation tank, disinfection tank, or main outlet where the height difference is permissible, it is possible to avoid blockage of the sewage pipes, which would affect the flow of sewage in the pipes, and also reduce the impact of particulate matter in the sewage on the water turbine.

[0022] In this embodiment, the turbine is an axial flow turbine 3. The axial flow turbine 3 includes a volute 31 connected to the inlet pipe 21 and the outlet pipe 7. A main shaft 32 is installed on the central axis of the volute 31. One end of the main shaft 32 is connected to multiple blades 33, which are evenly distributed circumferentially on the main shaft 32. In this embodiment, the blades 33 are made of stainless steel corrosion-resistant material to ensure the service life of the axial flow turbine 3, reduce the maintenance and replacement of power generation facilities, and save costs. The other end of the main shaft 32 is connected to a generator 4. The generator 4 is connected in sequence to a distribution box 5 and a small power electrical device 6. In this embodiment, the small power electrical device 6 includes a small power stirring device, a lighting device, etc.

[0023] By installing an axial flow turbine 3 and a generator 4 after the high-level water tank 1 in the sewage treatment plant, the potential energy of the water is used to generate electricity and store it. This can provide power for the low-power electrical equipment 6 in the sewage treatment plant, reduce the consumption of municipal electricity, reduce the operating cost of the sewage treatment plant, and achieve energy saving and efficiency improvement.

[0024] When the wastewater treatment plant has no power generation needs, the switch valve 23 on the inlet pipe 21 is closed, and the switch valve 23 on the outlet pipe 22 is opened. The water in the high-level water tank 1 flows out through the outlet pipe 2 and the outlet pipe 22 in sequence or is transported to the subsequent treatment unit. When the power generation facility of this embodiment needs to generate electricity, the switch valve 23 on the outlet pipe 22 is closed. The water in the high-level water tank 1 flows through the outlet pipe 2 and the inlet pipe 21 in sequence into the volute 31 of the axial flow turbine 3. The water flow drives the blades 33 and the main shaft 32 to rotate, causing the generator 4 to generate electricity and transmit it to the distribution box 5. The distribution box 5 collects the electrical energy generated by the generator 4 and reasonably distributes the input power signal to the low-power electrical equipment 6 to meet the power demand of the low-power electrical equipment 6. After passing through the blades 33, the water flows out of the volute 31 and is discharged through the drain pipe 7 or transported to the subsequent treatment unit.

[0025] The power generation facility in this embodiment is small in size, simple in structure, and easy to maintain and manage. It does not require large-scale earthwork and is easy to construct and put into practical use. It utilizes the principle of hydropower generation, which is advanced, mature, reliable, and widely applicable. The power generation process makes full use of the potential energy of water and does not require the consumption of other energy sources. Furthermore, large sewage treatment plants usually produce and operate continuously, which can provide a continuous source of power for generator 4.

[0026] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A small fluid potential energy recovery power generation facility for a sewage treatment plant, characterised in that: The application relates to a water power generation device, which comprises a high liquid level pool (1), a water outlet pipe (2), a water turbine, a generator (4) and low-power electrical equipment (6), the upper end of the water outlet pipe (2) is connected to the pool wall of the high liquid level pool (1) near the pool top, the lower end of the water outlet pipe (2) is connected with the water turbine, the water turbine comprises a main shaft (32), one end of the main shaft (32) is connected with a plurality of blades (33), the plurality of blades (33) are circumferentially distributed on the main shaft (32), the other end of the main shaft (32) is connected with the generator (4), the generator (4) is connected with the low-power electrical equipment (6), the water in the high liquid level pool (1) enters the water turbine through the water outlet pipe (2) to drive the blades (33) to rotate, so that the generator (4) generates power and supplies power to the low-power electrical equipment (6).

2. A small scale fluid potential energy recovery power generation facility for a sewage treatment plant according to claim 1 characterised in that: The generator (4) is connected with the low-power electrical equipment (6) through a distribution box (5).

3. A small scale fluid potential energy recovery power generation facility for a sewage treatment plant according to claim 2 characterised in that: The water turbine is a axial flow water turbine (3), the axial flow water turbine (3) comprises a volute (31), the main shaft (32) is arranged on the central axis of the volute (31), the volute (31) is connected with a drain pipe (7), and the drain pipe (7) is used for draining or conveying water to a subsequent treatment unit.

4. The small scale fluid potential energy recovery power generation facility for a sewage treatment plant of claim 3, wherein: The lower end of the water outlet pipe (2) is provided with an inlet pipe (21) and a discharge pipe (22), the inlet pipe (21) is connected with the volute of the axial flow water turbine (3), the discharge pipe (22) is used for draining or conveying water to a subsequent treatment unit, and the inlet pipe (21) and the discharge pipe (22) are both provided with a switch valve (23).

5. A small scale fluid potential energy recovery power generation facility for a sewage treatment plant as claimed in any one of claims 1 to 4, characterised in that: The blades (33) are made of stainless steel corrosion-resistant material.

6. A small scale fluid potential energy recovery power generation facility for a sewage treatment plant as claimed in any one of claims 1 to 4, characterised in that: The high liquid level pool (1) is a sedimentation pool or a disinfection pool or a total discharge port.

7. A small scale fluid potential energy recovery power generation facility for a sewage treatment plant as claimed in any one of claims 1 to 4, characterised in that: The low-power electrical equipment (6) comprises low-power stirring equipment and lighting equipment.

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