Power generation device for high-pressure pipeline

Abstract

The utility model relates to the technical field of power generation, in particular to a power generation device for a high-pressure pipeline, which comprises a shell, the shell is provided with a water outlet and a water inlet on the side surface, and a base is arranged at one end of the shell; a Tesla turbine disc is arranged in the shell and is opposite to the water inlet; a bearing support is arranged in the shell, and the Tesla turbine disc is connected to the bearing support through a rotating shaft; a permanent magnet rotor is arranged at the end, away from the water outlet, of the rotating shaft, a stator plate is arranged on the shell or the base, a water stop plate is arranged between the stator plate and water flow in the shell, and the stator plate and the shell are arranged in an insulated mode. The device can be applied to a high-pressure pipeline to realize self power generation and has the advantage of high water pressure bearing capacity.

Description

Technical Field

[0001] The utility model relates to the technical field of power generation, and more specifically, to a power generation device for a high-pressure pipeline. Background Art

[0002] In oil field exploitation, it is necessary to pressurize water injection into the oil well to maintain the oil layer pressure and improve the exploitation efficiency. Automatic power generation devices are installed on pipelines to meet the electricity demand through water flow generation, but conventional power generation devices for pipelines can only generate electricity at low pressure. High water pressure can easily damage the power generation equipment. Therefore, existing self-generating devices cannot be used in high-pressure pipelines.

[0003] Prior art CN202020927857.9 discloses a power generation device for a high-pressure pipeline, including an upper pipeline, a ducted generator and a lower pipeline connected in sequence, the ducted generator includes a stator plate, a rotor and a casing, the stator plate and the rotor are arranged in the casing, the stator plate is arranged on the outer ring of the rotor, and the inner wall of the rotor is fixedly provided with blades; the outer wall of the stator plate is fixedly connected to the casing, and the rotor is fixedly connected to the casing through a shaft or a bearing. In this technical solution, blades are arranged on the inner wall of the rotor, and the blades are driven to rotate by the water flow to achieve power generation. However, the stator plate is arranged on the outer ring of the rotor, and its structure cannot withstand high water pressure (such as more than ten MPa or even tens of MPa). Therefore, the technical solution disclosed in the prior art still cannot be applied to power generation in high-pressure pipelines such as oil field water injection. Utility Model Content

[0004] In order to overcome the above-mentioned defects, the utility model discloses a power generation device for a high-pressure pipeline which can be applied to the high-pressure pipeline to generate power by itself.

[0005] In order to solve the above-mentioned technical problems, the technical solution of the utility model is as follows:

[0006] A power generation device for a high-pressure pipeline comprises a shell, the shell having a water outlet and a water inlet on the side, and a base at one end of the shell; a Tesla turbine disc is arranged in the shell opposite to the water inlet; a bearing support is arranged in the shell, and the Tesla turbine disc is connected to the bearing support via a rotating shaft; a permanent magnet rotor is arranged at the end of the rotating shaft away from the water outlet, a stator plate is arranged on the shell or the base, a water barrier is arranged between the stator plate and the water flow inside the shell, and the stator plate and the shell are insulated.

[0007] Preferably, a groove is provided on the inner wall of the shell at a position opposite to the permanent magnet rotor, a stator plate is arranged in the groove, and the permanent magnet rotor is arranged on the side of the rotating shaft and opposite to the stator plate.

[0008] Preferably, the stator plate is arranged around the inner wall, and circuits are printed on the stator plate.

[0009] Preferably, the water inlet is provided with a water inlet pipe, and the water inlet direction of the water inlet pipe is parallel to the tangent direction of the Tesla turbine disc.

[0010] Preferably, a nozzle for increasing water speed is provided at the connection position between the water inlet pipe and the shell.

[0011] Preferably, the Tesla turbine disc comprises annular blades arranged at intervals, and circular spacer rings are arranged between the blades.

[0012] Preferably, a keyway connected to the rotating shaft is provided at the center of the blade, and at least one flow groove for water circulation is also provided on the ring.

[0013] Preferably, the permanent magnet rotor is arranged at the axial bottom of the rotating shaft, the stator plate is arranged on the base and is arranged opposite to the permanent magnet rotor, and the water blocking plate is connected to the base.

[0014] Preferably, a support plate is further provided between the stator plate and the base.

[0015] Preferably, a rectifier plate connected to the stator plate is also provided in the bottom shell.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] 1. This application utilizes the Tesla turbine power generation principle. Water flows into the shell from the water inlet end and utilizes the viscosity of water to make the Tesla turbine disc, shaft and permanent magnet rotor rotate together, ultimately achieving self-generation. The stator adopts a plate shape, which overcomes the problem that the existing coil winding stator cannot withstand high water pressure.

[0018] 2. When the stator is installed on the base, a support plate is arranged between the stator and the base so that the water pressure is transmitted to the solid shell or base, thereby protecting the baffle plate and the stator plate from being damaged by high water pressure, so that the device can withstand high water pressure of dozens to tens of MPa.

[0019] 3. The water inlet and outlet are set at 90°, making the device suitable for pipe bends.

[0020] 4. Set up a gradually narrowing water inlet pipe and a nozzle with a guiding function to speed up the water flow, change the water flow coverage area, and thus improve the power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a schematic structural diagram of a power generation device for a high-pressure pipeline.

[0022] Figure 2The utility model is a schematic structural diagram of a Tesla turbine disc assembly in a power generation device for a high-pressure pipeline.

[0023] Figure 3 The utility model is a schematic structural diagram of a single turbine disc in a power generation device for a high-pressure pipeline.

[0024] Figure 4 The utility model is a schematic structural diagram of a spacer ring in a power generation device for a high-pressure pipeline.

[0025] Figure 5 The utility model is a schematic structural diagram of the connection between a stator plate and an inner wall of a shell in a power generation device for a high-pressure pipeline. DETAILED DESCRIPTION

[0026] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0028] In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0029] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0031] Example 1

[0032] like Figure 1 As shown, a power generation device for a high-pressure pipeline includes a shell, the shell has a water outlet 2, and a water inlet 1 on the side, and a base 15 is provided at one end of the shell. A Tesla turbine disc 7 is provided in the shell opposite to the water inlet 1; a bearing support 4 is provided in the shell, and the Tesla turbine disc 7 is connected to the bearing support 4 through a rotating shaft 6; a permanent magnet rotor 8 is provided at the end of the rotating shaft 6 away from the water outlet 2, a stator plate 9 is provided on the shell or the base 15, a water barrier 5 is provided between the stator plate 9 and the water flow inside the shell, and the stator plate 9 and the shell are insulated.

[0033] In this embodiment, in order to facilitate the installation of internal equipment, a base 15 is further provided at one end of the housing. The permanent magnet rotor 8 is provided at the axial bottom of the rotating shaft 6, the stator plate 9 is provided on the base 15 and arranged opposite to the permanent magnet rotor 8, and the water blocking plate 5 is connected to the base 15.

[0034] The stator plate 9 is plate-shaped and can withstand high water pressure, solving the problem that the transmission stator winding cannot withstand high water pressure. The water-blocking plate 5 is connected to the inner wall of the shell, and the stator plate 9 is waterproofed by the water-blocking plate 5. At the same time, the silicon steel sheet can be installed between the water-blocking plate 5 and the stator plate 9. The stator plate 9 is insulated from the shell.

[0035] In this embodiment, the stator plate 9 can also be installed on the inner wall of the shell adjacent to the base 15, and is arranged around the inner wall in a circular ring shape. The permanent magnet rotor is arranged on the side of the rotating shaft, so that the stator plate 9 and the permanent magnet rotor 8 are closest to each other. When the permanent magnet rotor 8 rotates, more magnetic lines of force are cut and the power generation efficiency is higher.

[0036] In this embodiment, in order to improve the processability of the power generation device and set the installation position of the power generation device accessories and other structures, a base 15 can also be set, and a waterproof sealing ring can also be set between the shell 3 and the base 15 to prevent water in the shell 3 from leaking out.

[0037] In this embodiment, Figure 1 The middle arrow indicates the direction of water flow. The shell 3 serves as a protective shell. The shell 3 can be made of metal material. The purpose of this design is that the shell is strong and can withstand high water pressure. In order to facilitate the installation of the bearing 6, a bearing support 4 fixedly connected to the inner wall of the shell 3 is provided on the inner wall of the shell 3 near the water outlet 2. A water baffle 5 is provided between the shell 3 and the base 15. The rotating shaft 6 is connected between the bearing support 4 and the water baffle 5. The rotating shaft 6 can rotate relative to the bearing support 4 and the water baffle 5. The water baffle 5 can be made of non-metallic material and will not hinder the magnetic flux lines. The water baffle 5 has two main functions. One is to prevent the water in the shell 3 from flowing out of the shell 3, and the other is to prevent the water in the shell 3 from entering the stator plate 9. The water baffle 5 provides water-proof protection for the stator plate 9, and transmits water pressure to the solid base 15 through the support plate 16, thereby protecting the water baffle 5 and the stator plate 9 from being damaged by high water pressure, so that the device can withstand high water pressure of more than ten to tens of MPa.

[0038] To facilitate understanding of this application, the principle of the Tesla turbine is briefly described below. The Tesla turbine uses the boundary layer effect of the fluid. The fluid is affected by viscosity and forms a very thin boundary layer at the edge of the pipe wall or other objects. In the boundary layer, the flow velocity on the fixed surface is 0, and the farther away from the surface, the greater the velocity. This effect can be used to allow the high-speed moving liquid to drive a group of disks to rotate. Therefore, its efficiency is much higher than that of ordinary blade turbines.

[0039] A Tesla turbine disc group 7 is arranged in the compartment on the rotating shaft 6 along the axial direction of the rotating shaft 6, which rotates under the action of the water flow through the water inlet end 1; the Tesla turbine disc group 7 is fixedly connected to the rotating shaft 6, and the permanent magnet rotor 8 is fixedly connected to the main body of the rotating shaft 6 near the water barrier 5, and the stator plate 9 will not contact the water under the water-isolating effect of the water barrier 5. The stator plate 9 and the permanent magnet rotor 8 react electromagnetically to generate electricity. Using the Tesla turbine principle, the flowing liquid medium, taking water as an example below, enters the shell 3, and the Tesla turbine disc group 7 is driven to rotate due to the viscosity of the water, and the Tesla turbine disc group 7 is fixedly connected to the rotating shaft 6, and the permanent magnet rotor 8 is fixedly connected to the rotating shaft 6. Therefore, in the process of continuous inflow of water, the Tesla turbine disc group 7, the rotating shaft 6 and the permanent magnet rotor 8 will continue to rotate. The stator plate 9 is fixedly connected to the housing 3, that is, the position of the stator plate 9 is fixed. When the permanent magnet rotor 8 is rotating, there is relative movement between the permanent magnet rotor 8 and the stator plate 9, thereby completing the movement of cutting the magnetic flux lines and realizing self-generation. The generated electric energy is provided to various monitoring sensors on site, and can also be stored in the charge-discharge battery for use by the electric actuator, so as to meet the power supply needs of self-generation, self-energy storage, self-power supply, etc. for on-site electrical equipment under the condition of power shortage.

[0040] Example 2

[0041] like Figure 5 As shown, a power generation device for a high-pressure pipeline is disclosed, including a shell 3, a water inlet 1, a water outlet 2, and a base 15 connected to the shell 3. A bearing support 4 is provided at one end of the shell 3 near the water outlet, and a rotating shaft is provided on the bearing support. A Tesla turbine disc group 7 is provided along the axial direction of the rotating shaft 6, and the Tesla turbine disc group 7 is directly opposite to the water inlet 1. A water baffle 5 is provided between the shell 3 and the base 15, and a permanent magnet rotor 8 is fixedly connected to the main body of the rotating shaft near the water baffle 5. A stator plate 9 is provided between the water baffle 5 and the base 15, and the stator plate 9 and the permanent magnet rotor 8 have an electromagnetic reaction, and self-generate electricity under the rotation of the rotor to supply electric energy to each detection device. A support plate 16 is also provided on the base, and the support plate is provided between the bottom of the base and the water baffle 5, and is used to support the water baffle and protect the stator plate 9.

[0042] The support plate 16 is made of an insulating material, preferably a low-cost engineering plastic. By adding the support plate 16, the stator plate 9 covered with circuits is insulated from the metal base 15, and a short circuit does not occur. At the same time, the huge water pressure transmitted from the high-pressure water to the water-blocking plate 5, the water-blocking plate 5 to the stator plate 9, and the stator plate 9 to the support plate 16 is finally borne by the metal base 15.

[0043] If the inner diameter of the shell is Φ90mm and the water pressure is 10MPa, then the water pressure N = area in square millimeters * water pressure MPa = 90*90 / 4*3.14*10 = 63585 Newtons = 6.3585 tons. If there is no support plate 16, any metal sheet or metal plate of any strength cannot withstand such a large pressure if it is suspended in the middle. Therefore, the stator plate 9 cannot be suspended in the air, and it must be supported to ensure that the water-blocking plate 5 and the stator plate 9 will not be deformed or damaged under the huge water pressure. After the water-blocking plate 5 and the stator plate 9 are supported by the support plate 16, even if the stator plate 9 is a thin piece of toilet paper, it will not be bent or broken.

[0044] A support plate 16 is provided between the stator plate 9 and the base 15 to bear the water pressure transmitted from the baffle plate 5 and the stator plate 9 and transmit the water pressure to the base 15. The support plate 16 supports the stator plate 9 and bears the water pressure transmitted through the baffle plate 5 and the stator plate 9 and transmits it to the base 15, so that the base 15 bears the water pressure, making the device suitable for high-pressure pipeline power generation. The support plate 16 can also be embedded with a silicon steel sheet 17 that enhances and stabilizes the magnetic field. The silicon steel sheet 17 can be specifically embedded in the surface where the support plate 16 and the stator plate 9 meet.

[0045] The permanent magnet rotor 8 and the stator plate 9 are distributed up and down, and the water inlet end 1 and the water outlet end 2 can also be designed at 90 degrees. The advantage of this design is that it not only allows the application to be applied to the bends of the pipeline, but also allows the water entering the shell 3 to be just tangent to the Tesla turbine disc group 7, thereby making full use of water energy and improving power generation efficiency.

[0046] like Figure 2-4 As shown, the blade 70 can be specifically a circular ring. In order to facilitate the connection between the blade 70 and the rotating shaft 6, a key groove 701 connected to the rotating shaft 6 can be provided at the center of the circular ring. At the same time, at least one circulation groove 702 for water circulation is also provided on the circular ring. Specifically, four circulation grooves 702 can be provided.

[0047] The spacer ring 71 can be set to a circular state, and the role of the spacer ring 71 is to control the gap between adjacent blades 70. Different liquid media have different viscosity, and the viscosity is also affected by the blade gap. Therefore, the thickness of the spacer ring 71 can be adjusted to make the present application applicable to different liquid media power generation.

[0048] Example 3

[0049] like Figure 1-2As shown, this embodiment discloses a power generation device for a high-pressure pipeline, which is different from the embodiment 1 in that: in order to facilitate the connection of this application with other pipelines, a joint 10 can be provided on the water inlet end 1 and the water outlet end 2 respectively. The joint 10 can adopt a standard pipe joint or a flange commonly used in the industry. At the same time, in order to increase the power generation, a water inlet pipe 11 for increasing the water flow rate can be provided between the water inlet end 1 and the joint 10 connected to the water inlet end 1. The internal flow channel of the water inlet pipe 11 gradually changes from a circular shape to a narrow groove shape; thereby increasing the water flow rate and ultimately improving the power generation efficiency. The water flow direction at the water outlet end of the water inlet pipe 11 is parallel to the tangent direction of the Tesla turbine disc group 7, thereby increasing the rotation speed of the Tesla turbine disc group 7. Even, a nozzle 12 can be provided on the water outlet end of the water inlet pipe 11, and water is sprayed out from the nozzle 12 at a high speed into the housing 3, and the water outlet flow direction of the nozzle 12 is the tangent direction of the Tesla turbine disc group 7. A gradually narrowing water inlet pipe 11 and a nozzle 12 with a guiding function are provided to speed up the water flow and change the water flow coverage area, thereby improving the power generation efficiency. The width of the nozzle 12 outlet is variable, or the nozzle 12 is replaceable. Some nozzles 12 outlets can cover all the disc groups, or only cover part of the disc group, such as covering 1 / 2 of the disc group, covering 1 / 3 of the disc group, etc. If the disc group covered by the nozzle 12 outlet is different, the flow rate of the water flow is different, and the speed of the disc rotation is also different.

[0050] Example 4

[0051] The difference between this embodiment and embodiment 3 is that the electricity generated by the power generation device composed of the permanent magnet rotor 8 and the stator plate 9 is alternating current, while the sensors such as water flow and water pressure require direct current. Therefore, a rectifier plate 14 connected to the stator plate 9 is provided on the base 15, and the alternating current is converted into direct current through the rectifier plate 14. Through this design, the electricity from the rectifier plate 14 can be directly used by various monitoring sensors, that is, this application can be directly electrically connected to each monitoring sensor to realize power supply.

[0052] The rectifying plate 14 can be specifically installed in the hollow cavity of the base 15 and waterproofly sealed under the action of the water-blocking plate 5 .

[0053] The same or similar numbers in the drawings correspond to the same or similar parts; the positional relationships described in the drawings are only for illustrative purposes and should not be construed as limitations on this patent. Obviously, the above-described embodiments of the utility model are merely examples for clearly illustrating the utility model, and are not limitations on the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A power generation device for a high-pressure pipeline, characterized in that: It includes a shell, which has a water outlet and a water inlet on the side, and a base is provided at one end of the shell; a Tesla turbine disc is provided in the shell opposite to the water inlet; a bearing support is provided in the shell, and the Tesla turbine disc is connected to the bearing support through a rotating shaft; a permanent magnet rotor is provided at the end of the rotating shaft away from the water outlet, a stator plate is provided on the shell or the base, a water barrier is provided between the stator plate and the water flow inside the shell, and the stator plate and the shell are insulated.

2. A power generation device for a high-pressure pipeline according to claim 1, characterized in that: A groove is provided on the inner wall of the shell at a position opposite to the permanent magnet rotor, a stator plate is arranged in the groove, and the permanent magnet rotor is arranged on the side of the rotating shaft and opposite to the stator plate.

3. A power generation device for a high-pressure pipeline according to claim 1, characterized in that: The stator plate is arranged around the inner wall, and circuits are printed on the stator plate.

4. A power generation device for a high-pressure pipeline according to claim 1, characterized in that: The water inlet is provided with a water inlet pipe, and the water inlet direction of the water inlet pipe is parallel to the tangent direction of the Tesla turbine disc.

5. A power generation device for a high-pressure pipeline according to claim 4, characterized in that: A nozzle for increasing water speed is provided at the connection position between the water inlet pipe and the shell.

6. The power generation device for high-pressure pipeline according to claim 1, characterized in that: The Tesla turbine disc comprises annular blades arranged at intervals, and circular spacer rings are arranged between the blades.

7. A power generation device for a high-pressure pipeline according to claim 6, characterized in that: A keyway connected to the rotating shaft is arranged at the center of the blade, and at least one flow groove for water circulation is also arranged on the ring.

8. The power generation device for high-pressure pipeline according to claim 1, characterized in that: The permanent magnet rotor is arranged at the axial bottom of the rotating shaft, the stator plate is arranged on the base and is arranged opposite to the permanent magnet rotor, and the water blocking plate is connected to the base.

9. A power generation device for a high-pressure pipeline according to claim 8, characterized in that: A support plate is also provided between the stator plate and the base.

10. The power generation device for high-pressure pipeline according to claim 1, characterized in that: A rectifier plate connected to the stator plate is also arranged in the base.

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