Power generation device and application of power generation device for supplying power to electric devices of gas pipeline

Abstract

The invention provides a power generation device and application of the power generation device for supplying power to electric devices of a gas pipeline. The power generation device comprises a generator, a power generation impeller, a first flow guide structure and a second flow guide structure. The first flow guide structure comprises a set of first guide vanes, the number of the first guide vanes is 10-40, each first guide vane is provided with a vane inclination angle, and the vane inclination angle is 10-60 degrees. The second flow guide structure comprises a group of second guide vanes, the number of the second guide vanes is 10-60, each second guide vane is provided with a first vane bend angle, and the first vane bend angle is 50-75 degrees. The first flow guide structure guides fuel gas in the fuel gas pipeline to the second flow guide structure, the second flow guide structure guides the fuel gas to rush to the power generation impeller, the power generation impeller rotates so that the power generator can generate power, and the power generation device transmits power to electric devices of the fuel gas pipeline.

Description

Technical Field

[0001] This invention belongs to the field of power generation, and in particular relates to the use of a power generation device for supplying power to electrical components of a gas pipeline. Background Technology

[0002] With the frequent occurrence of gas safety accidents, the safety of the natural gas industry has been elevated to a new level, and the concept of safe gas use has become deeply ingrained in people's minds, making intelligentization a trend of the times. In the context of smart city construction and the Internet of Things era, gas pipelines need to use various electrical components (such as detection devices, information transmission devices, electric valves, smart gas meters, etc.) to achieve different functions.

[0003] For example, intelligent gas safety systems need to detect changes in pressure or flow in pipelines to determine if there are any abnormalities (such as gas leaks). Because this concerns life and property safety, the shorter the interval between gas detections by intelligent gas safety systems, the better; ideally, they should detect gas in real time. Traditional detection instruments are powered by dry cell batteries, and to save power, they are usually tested periodically at intervals (usually every 4 hours). Because of these long intervals, safety cannot be fully guaranteed, and the batteries need to be replaced manually periodically. In practical applications, to ensure safety, the batteries are replaced manually periodically based on the estimated remaining charge, rather than waiting until they are completely depleted. Each battery replacement requires dedicated personnel, increasing both battery and labor costs. In particular, the removed batteries cause significant environmental pollution. Summary of the Invention

[0004] In order to overcome at least one deficiency in the prior art, the present invention provides a power generation device and its use for supplying power to electrical components of a gas pipeline.

[0005] To achieve one objective of this invention, a power generation device is provided for supplying power to electrical components in a gas pipeline. The power generation device is installed in the gas pipeline and includes a generator, a generator impeller, a first guide structure, and a second guide structure. The first guide structure includes a set of 10-40 first guide vanes, each with a blade inclination angle of 10-60 degrees. The second guide structure includes a set of 10-60 second guide vanes, each with a first blade bend angle of 50-75 degrees. The first guide structure guides the gas in the gas pipeline to the second guide structure, which then directs the gas towards the generator impeller. The generator impeller rotates, causing the generator to generate electricity, which is then transmitted to the electrical components in the gas pipeline.

[0006] In one embodiment of the present invention, the power generation impeller includes a set of power generation blades, the number of which is 10-60, each power generation blade is an asymmetrical blade, and each power generation blade has a second blade bend angle of 15-40 degrees.

[0007] In one embodiment of the present invention, the power generation impeller includes a set of power generation blades, the number of which is 10-60. Each power generation blade is a symmetrical blade, and each power generation blade has a second blade bend angle of 0-60 degrees.

[0008] In one embodiment of the present invention, the first flow guiding structure guides the gas from top to bottom to the second flow guiding structure, and the second flow guiding structure guides the gas from top to bottom to the power generation impeller.

[0009] In one embodiment of the present invention, the number of first guide vanes is less than the number of second guide vanes, and the blade gap of the first guide vanes is greater than the blade gap of the second guide vanes.

[0010] In one embodiment of the present invention, the power generation device includes an interface connected to a gas pipeline, the gas pipeline having an inner diameter of 50-300 mm.

[0011] In one embodiment of the present invention, the power generation device includes a rechargeable battery and an overcharge protection module. The generator transmits power to the rechargeable battery for storage, and the overcharge protection module is electrically connected to the rechargeable battery to cut off or connect the power transmission from the generator to the rechargeable battery.

[0012] In one embodiment of the present invention, the overcharge protection module includes a resistor, and the resistor and the rechargeable battery are connected in parallel.

[0013] In one embodiment of the present invention, the power generation device further includes an air inlet channel, an air inlet valve, an air outlet valve, and an air outlet channel. The air inlet channel guides a portion of the gas in the gas pipeline to pass through the air inlet channel, the air inlet valve, the main body of the power generation device, and the air outlet valve before returning to the gas pipeline.

[0014] In one embodiment of the present invention, the air intake channel has an air inlet upstream of the gas pipeline, and the inner diameter of the air inlet is larger than the inner diameter of the interface of the power generation device.

[0015] In one embodiment of the present invention, the power generation device further includes a guiding structure, an air inlet, an air inlet valve, an air outlet valve, and an air outlet. The guiding structure guides a portion of the gas in the gas pipeline to pass through the guiding structure, the air inlet, the air inlet valve, the air outlet valve, and the air outlet before returning to the gas pipeline.

[0016] To achieve another objective of the present invention, a power generation device is also provided, installed in a gas pipeline. The power generation device includes a generator, a generator impeller, a first flow guide structure, and a second flow guide structure. The first flow guide structure includes a set of 10-40 first guide vanes, each with a blade inclination angle of 10-60 degrees. The second flow guide structure includes a set of 10-60 second guide vanes, each with a first blade bend angle of 50-75 degrees. The first flow guide structure guides the gas in the gas pipeline to the second flow guide structure, which then directs the gas towards the generator impeller. The generator impeller rotates, thereby generating electricity, and the power generation device transmits the electricity to the electrical components in the gas pipeline.

[0017] In one embodiment of the present invention, the power generation impeller includes a set of power generation blades, the number of which is 10-60, each power generation blade is an asymmetrical blade, and each power generation blade has a second blade bend angle of 15-40 degrees.

[0018] In one embodiment of the present invention, the power generation impeller includes a set of power generation blades, the number of which is 10-60. Each power generation blade is a symmetrical blade, and each power generation blade has a second blade bend angle of 0-60 degrees.

[0019] In one embodiment of the present invention, the first flow guiding structure guides the gas from top to bottom to the second flow guiding structure, and the second flow guiding structure guides the gas from top to bottom to the power generation impeller.

[0020] In one embodiment of the present invention, the number of first guide vanes is less than the number of second guide vanes, and the blade gap of the first guide vanes is greater than the blade gap of the second guide vanes.

[0021] In one embodiment of the present invention, the power generation device includes an interface connected to a gas pipeline, the gas pipeline having an inner diameter of 50-300 mm.

[0022] In one embodiment of the present invention, the power generation device includes a rechargeable battery, and the generator transmits power to the rechargeable battery for storage.

[0023] In one embodiment of the present invention, the power generation device includes an overcharge protection module, which is electrically connected to a rechargeable battery to cut off or connect the power transmission from the generator to the rechargeable battery.

[0024] In one embodiment of the present invention, the overcharge protection module includes a resistor, and the resistor and the rechargeable battery are connected in parallel.

[0025] In one embodiment of the present invention, the power generation device further includes an air inlet channel, an air inlet valve, an air outlet valve, and an air outlet channel. The air inlet channel guides a portion of the gas in the gas pipeline to pass through the air inlet channel, the air inlet valve, the main body of the power generation device, and the air outlet valve before returning to the gas pipeline.

[0026] In one embodiment of the present invention, the air intake channel has an air inlet upstream of the gas pipeline, and the inner diameter of the air inlet is larger than the inner diameter of the interface of the power generation device.

[0027] In one embodiment of the present invention, the power generation device further includes a guiding structure, an air inlet, an air inlet valve, an air outlet valve, and an air outlet. The guiding structure guides a portion of the gas in the gas pipeline to pass through the guiding structure, the air inlet, the air inlet valve, the air outlet valve, and the air outlet before returning to the gas pipeline.

[0028] To achieve another objective of the present invention, a method for generating electricity from gas in a gas pipeline to supply electrical devices is also provided, comprising the following steps: installing a power generation device in the gas pipeline, the power generation device including a generator, a generator impeller, a first guide structure, and a second guide structure; the first guide structure including a set of 10-40 first guide vanes, each first guide vane having a blade inclination angle of 10-60 degrees; the second guide structure including a set of 10-60 second guide vanes, each second guide vane having a first blade bend angle of 50-75 degrees; the first guide structure guides the gas in the gas pipeline to the second guide structure, the second guide structure guides the gas towards the generator impeller, the generator impeller rotates, thereby generating electricity, and the power generation device transmits the electricity to the electrical devices in the gas pipeline.

[0029] In summary, the existing technology of using gas-fired power generation to supply electrical devices for gas pipelines is completely lacking. This invention innovatively utilizes the gas in the gas pipeline to generate electricity for electrical devices within the gas pipeline. Traditional gas-fired power generation uses the heat energy released during gas combustion to generate high-temperature, high-pressure steam, which drives a generator to produce electricity, rather than directly using the kinetic energy of the gas in the gas pipelines used by residents. The two methods have completely different power generation principles, structures, application scenarios, and uses. The power generation of this invention supplies electrical devices to gas pipelines, avoiding the waste of manpower and resources and environmental pollution caused by battery replacements in existing technologies. In particular, because it can provide sufficient power to the devices, the devices can perform real-time gas pipeline monitoring, greatly improving and ensuring safety.

[0030] To make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0031] Figure 1 The image shown is a side sectional view of a power generation device according to an embodiment of the present invention.

[0032] Figure 2 The image shown is a cross-sectional view of a power generation device according to an embodiment of the present invention.

[0033] Figure 3 The figure shown is a perspective view of a power generation device according to an embodiment of the present invention.

[0034] Figure 4 The figure shown is a longitudinal sectional perspective view of the second flow guiding structure and the first flow guiding structure provided according to an embodiment of the present invention.

[0035] Figure 5 The image shown is a longitudinal sectional front view of a second flow guiding structure and a first flow guiding structure provided according to an embodiment of the present invention.

[0036] Figure 6 The following is along Figure 5 A cross-sectional view along the AA direction.

[0037] Figure 7 The diagram shown is a schematic diagram of a first guide vane provided according to an embodiment of the present invention.

[0038] Figure 8 The image shown is a perspective view of a power generation impeller according to an embodiment of the present invention.

[0039] Figure 9 The image shown is a front view of a power generation impeller according to an embodiment of the present invention.

[0040] Figure 10 The diagram shown is a schematic diagram of a power generation blade according to an embodiment of the present invention.

[0041] Figure 11 The image shown is a perspective view of a power generation impeller according to another embodiment of the present invention.

[0042] Figure 12 The image shown is a front view of a power generation impeller according to another embodiment of the present invention.

[0043] Figure 13 The diagram shown is a schematic diagram of a power generation blade according to another embodiment of the present invention.

[0044] Figure 14 The diagram shown is a simplified schematic of an overcharge protection module according to an embodiment of the present invention.

[0045] Figure 15 The diagram shows a power generation device provided according to an embodiment of the present invention applied to a large-diameter gas pipeline.

[0046] Figure 16 The diagram shown is a schematic representation of a power generation device provided according to another embodiment of the present invention applied to a large-diameter gas pipeline. Detailed Implementation

[0047] like Figure 1-3 As shown, the present invention provides a power generation device 1, which is installed in a gas pipeline. The power generation device 1 includes a generator 11, a generator impeller 12, a first flow guiding structure 13, and a second flow guiding structure 14.

[0048] like Figure 4-7 As shown, the first guide structure 13 includes a set of first guide vanes 131, the number of which is 10-40. Each first guide vane 131 has a blade inclination angle α, which is 10-60 degrees. In this embodiment, the first guide vane is a tongue-shaped blade, and the present invention does not impose any limitation on the specific shape of the first guide vane. Figure 6 As shown, the blade tilt angle α is the angle between the central axis of the first guide vane and the tangent direction of the central circle of the first guide vane.

[0049] The second guide structure 14 includes a set of second guide vanes 141, the number of which is 10-60. Each second guide vane 141 has a first blade bend angle β, which is 50-75 degrees. Figure 7 This is a schematic diagram of the longitudinal section of the second guide vane as viewed radially from the second guide structure. (See diagram below.) Figure 7 As shown, the first blade bend angle β is the angle between the tangent direction of the centerline of the second guide vane on the water outlet side and the central axis X1 of the second guide structure.

[0050] The first flow guiding structure 13 guides the gas in the gas pipeline to the second flow guiding structure 14. The second flow guiding structure 14 guides the gas towards the generator impeller 12. The generator impeller 12 rotates, thereby generating electricity from the generator 11. The generator 1 then transmits the electricity to the electrical components 2 of the gas pipeline. The electrical components 2 of the gas pipeline referred to in this invention include conventional gas meters for measuring gas flow, smart gas meters requiring remote data transmission, gas leak detection instruments specifically for detecting gas pipeline pressure, information transmission devices, electric valves, sensors, etc. Any electrical component of a gas pipeline that requires electricity is within the scope of this invention. In this embodiment, the generator 11 is located below the generator impeller 12, the first flow guiding structure 13, and the second flow guiding structure 14. However, this invention does not limit this. In other embodiments, the generator 11 may be located above the generator impeller 12, the first flow guiding structure 13, and the second flow guiding structure 14.

[0051] In this embodiment, the number of first guide vanes 131 is less than the number of second guide vanes 141, and the blade gap between the first guide vanes 131 is greater than the blade gap between the second guide vanes 141. With this arrangement, the gas flowing into the generator housing will not experience much resistance when it initially collides with the first guide structure. For the gas inside the generator housing, the first guide structure primarily functions to divert and guide the flow, minimizing obstruction and turbulence, thus minimizing pressure loss.

[0052] In this embodiment, the first guiding structure directs the gas from top to bottom to the second guiding structure, which then directs the gas from top to bottom to all the blades of the power generation impeller. In this embodiment, the gas is guided to all the blades of the power generation impeller through the two-stage guiding structure and the power generation impeller structure, utilizing both the kinetic and gravitational potential energy of the gas to increase power generation. However, this invention does not limit this; in other embodiments, the second guiding structure can be located below the power generation impeller, guiding the gas from bottom to top. Although it does not utilize the gravitational potential energy of the gas, it still guides the gas to all the blades of the power generation impeller. Whether located above or below, the second guiding structure is only required to be upstream of the impeller.

[0053] In this embodiment, the diameter of the second flow guiding structure is smaller than the diameter of the first flow guiding structure, and the diameter of the second flow guiding structure is larger than the diameter of the power generation impeller. In other words, the diameter decreases sequentially from the first flow guiding structure, the first flow guiding mechanism, and the power generation impeller. This arrangement concentrates the gas flow after it is guided by the flow guiding mechanism, resulting in a higher gas velocity and ensuring sufficient power generation even under conditions where the gas flow velocity is not high.

[0054] The second and first flow guiding structures can guide the direction of the gas flow, increase the gas flow velocity, make the flow more regular and smooth, and further reduce the generation of turbulence and reduce pressure loss.

[0055] In this embodiment, as Figure 8-10 As shown, the power generation impeller 12 includes a set of power generation blades 121, the number of power generation blades 121 is 10-60, and each power generation blade 121 has a second blade bend angle γ, the second blade bend angle γ is 15-40 degrees. Figure 10 This is a schematic diagram of the longitudinal cross-section of the generator blades as viewed radially from the generator impeller. (See diagram below.) Figure 10 As shown, the second blade bend angle γ is the angle between the tangent direction of the centerline of the blade on the water outlet side and the axis X2 of the generator impeller. In this embodiment, the generator impeller, by setting a specific number of generator blades and generator blades with a special angle, can ensure a certain power generation even under extremely low gas velocity conditions.

[0056] The power generation device provided by this invention has its flow guiding structure and power generation impeller located in different flow channels, generating electricity through a "double-layer flow channel" approach. This embodiment, through the combination of a two-stage flow guiding structure and a power generation impeller, ensures that the pressure loss of the entire power generation device is within national standards, and also guarantees that the power generation device can still generate electricity under conditions of low gas flow velocity, making the commercial application and promotion of the power generation device truly possible.

[0057] In this embodiment, each power-generating blade 121 is an asymmetrical blade, which can better utilize the kinetic energy of the gas impact. However, the present invention does not limit this in any way. In another embodiment, such as Figures 11-13 As shown, the power generation impeller 12' has power generation blades 121' that can be symmetrical blades. In this embodiment, the second blade bend angle γ' of the power generation blade 121' is 0-60 degrees, and in this embodiment, the second blade bend angle γ' is the angle between the tangent direction of the blade tip curve and the central symmetry line of the blade. When γ' is 0 degrees, the longitudinal section of the second blade is semi-circular.

[0058] In this embodiment, the power generation device includes an interface 15, which connects to a gas pipeline with an inner diameter of 50-300 mm. The power generation device of this invention does not require installation in a high-pressure gas pipeline; the gas velocity in a normal medium-pressure or sub-high-pressure pipeline is sufficient to meet power generation needs. Specifically, this invention utilizes gas in small- to medium-sized gas pipelines with an inner diameter of 50-300 mm for power generation. It is applicable to installation in medium-pressure pipelines (e.g., DN50, DN80, and DN100 pipelines) entering residential areas or gas stations.

[0059] In this embodiment, the power generation device 1 includes a rechargeable battery 16 and an overcharge protection module 17. The generator transmits power to the rechargeable battery 16 for storage, and the overcharge protection module 17 is electrically connected to the rechargeable battery 16 to cut off or connect the power transmission from the generator to the rechargeable battery.

[0060] Gas is continuously transported through medium-pressure pipelines entering residential areas or gas stations, every day and every hour. Therefore, the generator constantly charges the rechargeable battery. However, in actual use, the battery typically only needs 1-2 hours to fully charge. Continuously charging a fully charged battery will cause overcharging, significantly reducing its lifespan.

[0061] In this embodiment, the overcharge protection module 17 includes a resistor 171, which is connected in parallel with the rechargeable battery 16. When the overcharge protection module detects that the rechargeable battery 16 is fully charged, it switches the power transmitted from the generator to the resistor 171, thereby effectively reducing the voltage at the generator outlet. If the resistor is not provided and the circuit connection between the generator and the rechargeable battery is simply cut off, although no current will be generated at this time and the rechargeable battery will not be further charged, the outlet voltage will continue to rise due to the increase in generator speed, which will increase the explosion-proof requirements of the power generation device and pose a potential hazard to the circuit components. Because it is a gas pipeline, safety issues need to be given priority. Therefore, in this embodiment, the overcharge protection module consumes power by switching the resistor after the rechargeable battery is fully charged, rather than directly cutting off the circuit, thus fully ensuring the safety of the gas pipeline.

[0062] When the power generation device of the present invention is used in small- to medium-diameter gas pipelines, the two ports of the power generation device are directly connected to the upstream and downstream of the gas pipeline, respectively. When the power generation device of the present invention is used in large-diameter gas pipelines, the two ports of the present invention are indirectly connected to the upstream and downstream of the gas pipeline through valves, specifically as follows: Figure 15 and 16 As shown.

[0063] The main pipeline for gas transportation is a large-diameter pipeline, typically 300-500 mm in diameter, and its service life is usually 30-50 years. The power generation device of this invention has a shorter service life (e.g., 10 or 15 years) than the main pipeline.

[0064] like Figure 15 As shown, to facilitate the replacement or maintenance of the power generation device, the power generation device provided in this embodiment also includes an air inlet channel 181, an air inlet valve 182, an air outlet valve 183, and an air outlet channel 184. During the transportation process, a portion of the gas in the main pipeline 2 (i.e., the gas pipeline) enters the air inlet channel 181, then enters the main body of the power generation device 1 (i.e., the part including the generator, the generator impeller, the first guide structure, and the second guide structure) through the air inlet valve 182, and then exits through the air outlet valve 183 and returns to the main pipeline 2 through the air outlet channel 184.

[0065] In this embodiment, the air intake passage 181 has an air inlet 1811 facing upstream of the main pipeline 2. The air outlet passage 184 has an air outlet 1841 facing downstream of the main pipeline 2. The inner diameter of the air inlet 1811 of the air intake passage 181 is larger than the inner diameter of the interface 15 of the power generation device 1, and the inner diameter of the air outlet 1841 of the air outlet passage 184 can be greater than, equal to, or smaller than the inner diameter of the interface 15 of the power generation device 1. With this arrangement, a portion of the gas in the main pipeline 2 will smoothly enter the air intake passage 181 and smoothly flow out from the air outlet passage 181 after passing through the power generation device.

[0066] When it is necessary to replace or repair the generator unit 1, simply close the inlet valve 182 and the outlet valve 183, and the generator unit 1 can be directly replaced without affecting the gas transportation in the main pipeline 2. This makes the maintenance of the generator unit 1 more convenient and significantly reduces the maintenance cost.

[0067] Figure 16 The diagram shows a power generation device according to another embodiment of the present invention applied to a large-diameter gas pipeline. The power generation device provided in this embodiment further includes an inlet 181', an inlet valve 182, an outlet valve 183, and an outlet 184'. In this embodiment, the inlet 181' and outlet 184' are directly provided on the main pipeline 2'. A guide structure 1811' is provided at the inlet 181' in this embodiment. The guide structure 1811' guides a portion of the gas into the inlet 181', then through the inlet valve 182 into the main body of the power generation device (i.e., the part including the generator, generator impeller, first guide structure, and second guide structure), and then out through the outlet valve 183 and back to the main pipeline 2' via the outlet 184'.

[0068] It is important to note that Figure 15 and Figure 16 The two embodiments described illustrate the installation structure and method between the power generation device and the main pipeline of the gas pipeline; however, the present invention does not impose any limitations on this. The power generation device of this application can be installed not only on gas pipelines, but also on oil pipelines, steam pipelines, water pipelines, etc. Figure 15 and Figure 16 The two installation methods shown are applicable to the combination of all fluid pipelines and power generation devices that utilize fluids to generate electricity.

[0069] by Figure 15Taking the installation structure and installation method shown as an example, when the power generation device is applied to other fluid pipelines, during the transportation process of the fluid in the main pipeline (such as oil, steam, tap water, etc.), a portion will enter the inflow channel (i.e., the air inlet channel 181), and then enter the main body of the power generation device through the inlet valve (i.e., the air inlet valve 182). After exiting from the outlet valve (i.e., the air outlet valve 183), it will return to the main pipeline through the outflow channel (i.e., the air outlet channel 184).

[0070] by Figure 16 Taking the installation structure and installation method shown as an example, when the power generation device is applied to other fluid pipelines, during the transportation process, part of the fluid in the main pipeline (such as oil, steam, tap water, etc.) will enter from the inlet (i.e., air inlet 181') through the guide structure 1811', enter the main body of the power generation device through the inlet valve (i.e., air inlet valve 182), and then come out from the outlet valve (i.e., air outlet valve 183) and return to the main pipeline through the outlet (i.e., air outlet 184').

[0071] These two installation methods allow for the maintenance and replacement of the power generation unit at any time without affecting the flow and transport of fluids in the main pipeline, greatly facilitating maintenance and reducing maintenance costs.

[0072] In summary, the existing technology of using gas-fired power generation to supply electrical devices for gas pipelines is completely lacking. This invention innovatively utilizes the gas in the gas pipeline to generate electricity for electrical devices within the gas pipeline. Traditional gas-fired power generation uses the heat energy released during gas combustion to generate high-temperature, high-pressure steam, which drives a generator to produce electricity, rather than directly using the kinetic energy of the gas in the gas pipelines used by residents. The two methods have completely different power generation principles, structures, application scenarios, and uses. The power generation of this invention supplies electrical devices to gas pipelines, avoiding the waste of manpower and resources and environmental pollution caused by battery replacements in existing technologies. In particular, because it can provide sufficient power to the devices, the devices can perform real-time gas pipeline monitoring, greatly improving and ensuring safety.

[0073] It should be noted that the terms "above" or "below" in this application refer to "above" and "below" along the direction of gravity. The terms "above" or "below" in this application refer to the situation where the power generation device, such as... Figure 1The orientation is defined when the device is placed as shown. When the generator is installed face down, "above" becomes "below," and "below" becomes "above." When the generator is rotated 90 degrees, "above" or "below" becomes "left" or "right." The terms "first," "second," etc., used in this application are for the convenience of describing the technical solution of the present invention and have no specific limiting effect; they are all general terms and do not constitute a limitation on the technical solution of the present invention. All angles mentioned in this application include two endpoint values. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0074] Although the present invention has been disclosed above by way of preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of protection claimed in the claims.

Claims

1. A power generation device for supplying power to electrical components of a gas pipeline, characterized in that, The power generation device is installed in the gas pipeline, and the power generation device includes: dynamo; Generator impeller; A first flow guiding structure; the first flow guiding structure includes a set of first guide vanes, the number of which is 10-40, each first guide vane having a blade tilt angle of 10-60 degrees; The second flow guiding structure includes a set of second guide vanes, the number of which is 10-60, and each second guide vane has a first blade bend angle of 50-75 degrees. The first flow guiding structure guides the gas in the gas pipeline to the second flow guiding structure, which then guides the gas towards the generator impeller. The generator impeller rotates, thereby generating electricity. The generator then transmits the electricity to the electrical components in the gas pipeline.

2. The power generation device according to claim 1 is used for supplying power to electrical components of a gas pipeline, characterized in that, The power generation impeller includes a set of power generation blades, the number of which is 10-60. Each power generation blade is an asymmetrical blade, and each power generation blade has a second blade bend angle of 15-40 degrees.

3. The power generation device according to claim 1 is used for supplying power to electrical components of a gas pipeline, characterized in that, The power generation impeller includes a set of power generation blades, the number of which is 10-60. Each power generation blade is a symmetrical blade, and each power generation blade has a second blade bend angle, which is 0-60 degrees.

4. The power generation device according to claim 1 is used for supplying power to electrical components of a gas pipeline, characterized in that, The power generation device includes an interface that connects to the gas pipeline, the gas pipeline having an inner diameter of 50-300mm.

5. The power generation device according to claim 1 is used for supplying power to electrical components of a gas pipeline, characterized in that, The power generation device includes a rechargeable battery and an overcharge protection module. The generator transmits power to the rechargeable battery for storage. The overcharge protection module is electrically connected to the rechargeable battery to cut off or connect the power transmission from the generator to the rechargeable battery.

6. The power generation device according to claim 5, characterized in that, The overcharge protection module includes a resistor, which is connected in parallel with the rechargeable battery.

7. A power generation device, installed in a gas pipeline, characterized in that, The power generation device includes: dynamo; Generator impeller; A first flow guiding structure; the first flow guiding structure includes a set of first guide vanes, the number of which is 10-40, each first guide vane having a blade tilt angle of 10-60 degrees; The second flow guiding structure includes a set of second guide vanes, the number of which is 10-60, and each second guide vane has a first blade bend angle of 50-75 degrees. The first flow guiding structure guides the gas in the gas pipeline to the second flow guiding structure, which then guides the gas towards the generator impeller. The generator impeller rotates, thereby generating electricity. The generator then transmits the electricity to the electrical components in the gas pipeline.

8. The power generation device according to claim 7, characterized in that, The power generation device includes a rechargeable battery, and the generator transmits electricity to the rechargeable battery for storage.

9. The power generation device according to claim 8, characterized in that, The power generation device includes an overcharge protection module, which is electrically connected to the rechargeable battery to cut off or connect the power transmission from the generator to the rechargeable battery.

10. The power generation device according to claim 8, characterized in that, The overcharge protection module includes a resistor, which is connected in parallel with the rechargeable battery.

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