Fluidically isolated power generation system
By using a permanent magnet rotor and isolation pipe design in the fluid isolation power generation system, the complexity, high cost, and safety hazards of existing fluid power generation systems are solved, achieving high-performance isolation and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI JURAN INTELLIGENT TECH
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-31
AI Technical Summary
Existing fluid power generation systems are complex in structure, high in cost, easily damaged, difficult to maintain, and pose fluid leakage and safety hazards.
The fluid isolation power generation system utilizes a permanent magnet rotor and isolation pipe design, placing the stator coils outside the isolation pipe, eliminating the need for sealed bearings and gearboxes, and employing steel pipes made of stainless steel with a magnetic permeability not exceeding 304. A rolling mechanism and pressure-bearing cavity are also incorporated to improve stability and safety.
It achieves high-performance isolation, reduces maintenance costs, extends system life, improves safety, avoids potential electrical spark hazards, and simplifies the maintenance process.
Smart Images
Figure CN224583019U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electricity, specifically to power generation technology. Background Technology
[0002] Most existing fluid power generation systems employ turbines, expanders, steam turbines, turbofans, water turbines, screw compressors, impeller systems, etc.
[0003] These systems all suffer from technical problems such as complex structure, high production and maintenance costs, limited pressure resistance, and fluid leakage.
[0004] Traditional fluid power generation systems have a generator located outside the fluid pipeline, connected to the power system (turbo, expander, steam turbine, turbine, scroll mill, water turbine, impeller system, screw compressor) inside the fluid pipeline through transmission mechanisms such as sealed bearings and gearboxes.
[0005] Sealed bearings are expensive, easily damaged, and complex to replace. Gearboxes are expensive, require lubrication mechanisms, suffer from transmission energy loss, and require a relatively large space.
[0006] There are also designs that place the entire generator (including the generator and motor) inside a fluid pipeline, but high-velocity fluids can easily damage the stator coils, causing problems such as easy failure and short lifespan. Moreover, when the stator coils are damaged, repairs are extremely difficult. Utility Model Content
[0007] The purpose of this utility model is to provide a fluid-isolated power generation system to solve at least one of the above-mentioned technical problems.
[0008] The technical problem solved by the utility model can be achieved by the following technical solutions:
[0009] A fluid-isolated power generation system includes a power system and a generator linked to the power system. The generator includes a rotor and stator coils. The characteristic feature is that the rotor is a permanent magnet rotor.
[0010] It also includes an isolation pipe;
[0011] The wall thickness of the isolation pipe is less than 3 mm;
[0012] The isolation pipe is equipped with pipe docking mechanisms at both ends to connect with other pipes or containers;
[0013] The isolation pipe is equipped with a rotor support for the permanent magnet rotor.
[0014] The rotor support and the isolation pipe are directly or indirectly fixedly connected;
[0015] The permanent magnet rotor is mounted on a rotor support;
[0016] The stator coil is sleeved outside the isolation pipe and forms an electromagnetic induction relationship with the permanent magnet rotor;
[0017] The permanent magnet rotor is equipped with a front-to-back conductive channel.
[0018] Traditional fluid power generation systems have a generator located outside the fluid pipeline, connected to the power system (turbo, expander, steam turbine, turbine, scroll mill, water turbine, impeller system, screw compressor) inside the fluid pipeline through transmission mechanisms such as sealed bearings and gearboxes.
[0019] Sealed bearings are expensive, easily damaged, and complex to replace. Gearboxes are expensive, require lubrication mechanisms, suffer from transmission energy loss, and require a relatively large space.
[0020] In this invention, the stator coil with induction coil is placed outside the isolation pipe, thus eliminating the need for sealed bearings and wires that penetrate the flow channel (including the fluid pipe), achieving high-performance isolation between the inside and outside of the isolation pipe.
[0021] It eliminates the maintenance costs of sealed bearings, omits the gearbox, and eliminates the complex sealing and anti-aging designs required for the wires connected to the induction coil to penetrate the flow channel (including fluid pipes).
[0022] Very few designs use a method where the entire generator is placed inside the flow channel, which also requires the installation of wires that penetrate the flow channel, posing a safety hazard.
[0023] Moreover, placing the generator entirely within the flow channel inevitably leads to problems such as large equipment size and difficulty in generator maintenance.
[0024] Furthermore, placing the generator entirely within the flow channel inevitably means placing the induction coil within the flow channel as well. The induction coil is subjected to the impact of high-speed fluids (especially natural gas, flue gas, chemical gases, and other gases containing impurities) for a long time, causing corrosion, accelerated aging, and even leakage. This results in a very short lifespan for the entire system and poses a significant safety hazard of internal electrical spark "ignition".
[0025] This invention places the stator coil outside the isolation pipe, making the relatively fragile induction coil in the generator easier to repair.
[0026] By placing the induction coil outside the isolation pipe, isolation is achieved between it and the fluid inside the pipe (especially natural gas, flue gas, chemical gases, and other gases containing impurities).
[0027] This avoids induction coil corrosion, slows down induction coil aging, and reduces the risk of induction coil leakage, thus extending the overall system lifespan. There is no safety hazard of internal electrical spark "ignition" within the pipeline (fluid pipeline), significantly improving safety.
[0028] The rotor is connected to a fluid drive mechanism, which is a fluid drive mechanism that generates a driving force with the axially flowing fluid.
[0029] The fluid drive mechanism is located in at least one position in the isolation pipe or the pipe to which the isolation pipe is connected.
[0030] A fluid drive mechanism, employing at least one of a turbine, screw, impeller, or spiral blade.
[0031] The fluid drive mechanism is connected to the rotor drive;
[0032] The transmission connection adopts at least one of the following: direct connection to the rotor or connection to the rotor through a speed change system.
[0033] The isolation duct is made of stainless steel with a magnetic permeability of no more than 304.
[0034] The isolation pipe is equipped with a pipe docking mechanism at at least one end, and the wall thickness of the pipe docking mechanism is greater than the wall thickness of the isolation pipe.
[0035] The rotor support is located inside the pipe docking mechanism.
[0036] The rotor support is fixed to the inside of the pipe docking mechanism on the outside, and a bearing support is provided on the inside of the rotor support.
[0037] The rotor's bearings are mounted on bearing supports.
[0038] Both ends of the isolation pipe are equipped with pipe docking mechanisms, and the wall thickness of the pipe docking mechanisms is greater than the wall thickness of the isolation pipe.
[0039] Two rotor supports are respectively installed inside the two pipe docking mechanisms.
[0040] Achieving front-to-back balance enhances stability and improves mechanical properties.
[0041] At least two rolling mechanisms are provided on the outer periphery of the rotor, and the two rolling mechanisms abut against at least one of the inner walls of the isolation pipe, the pipe docking mechanism, and the pipe docking mechanism.
[0042] The inner wall against which the rolling mechanism rests is a circular inner wall;
[0043] The rolling mechanism on the outer periphery of the rotor supports the rotor by abutting against the inner wall, thereby reducing the centrifugal force burden on the rotor shaft.
[0044] The outer periphery of the rotor is provided with at least three rolling mechanisms that are evenly arranged angularly around the axis of the rotor.
[0045] To achieve force balance in all directions, the rolling mechanism can use rollers, balls, etc.
[0046] The rotor is equipped with a front-to-back conductive channel;
[0047] Without a support mechanism in the channel, the permanent magnet rotor is supported in the inner wall of the isolation pipe by at least two rolling mechanisms set on the outer periphery.
[0048] Eliminating the inner support of the rotor reduces fluid disturbance and energy loss.
[0049] The isolation pipe is a round pipe with a wall thickness greater than 1 mm and less than 4 mm.
[0050] This range of wall thickness in the circular tube ensures both good transmission of magnetic force and magnetic coupling performance, while also withstanding most fluid pressures in industrial environments.
[0051] A funnel-shaped pipe connects to the front of the isolation pipe;
[0052] The small opening of the trumpet-shaped pipe connects to one end of the isolation pipe.
[0053] Whether the generator uses a generator or an electric motor, the smaller opening of the flared pipe represents the end with higher pressure. This helps improve mechanical performance for both power generation and fluid-driven applications.
[0054] The fluid drive mechanism is equipped with a rotating shaft, and a support member is provided in the middle of the rotating shaft. The inner side of the support member is fixedly connected to the rotating shaft.
[0055] The outer side of the support is provided with a rotating mechanism that abuts against the inner wall of the space it is in; by abutting against the inner wall, the fluid drive mechanism is supported, reducing the centrifugal force burden and dynamic balance burden of the fluid drive mechanism.
[0056] The outer periphery of the rotating shaft of the fluid drive mechanism is provided with at least three rotating mechanisms that are evenly arranged angularly around the axis of the rotating shaft.
[0057] To achieve force balance in all directions, the rotating mechanism can use rollers, balls, etc.
[0058] The isolation pipe is fitted with a pressure-bearing cavity, which is filled with pressurized fluid (gas or liquid).
[0059] The stator coil is housed within the pressure-bearing cavity, located between the isolation pipe and the cavity wall of the pressure-bearing cavity;
[0060] The stator coil is located in the pressurized fluid within the pressure-bearing cavity.
[0061] This reduces the pressure difference between the inside and outside of the isolation pipe, ensuring the safety of the isolation pipe.
[0062] The length of the fluid drive mechanism is greater than 2m.
[0063] By distributing the force over a longer length, the force per unit area is reduced, protecting the fluid drive mechanism, while ensuring that the superimposed force is large enough to ensure that the generator rotor has sufficient force to guarantee energy conversion power.
[0064] The fluid drive mechanism adopts a structure of at least two sections, and the two sections of the fluid drive mechanism are connected by a live joint transmission.
[0065] The connecting method for the joint drive can be universal joint, cross joint, etc.
[0066] This provides a technical basis for setting the fluid drive mechanism to be long enough and avoiding problems such as axial deformation and vibration.
[0067] The fluid drive mechanism adopts a structure of at least two sections, with one section being longer than 1m and shorter than 2m.
[0068] It also avoids problems such as axial deformation and vibration. Attached Figure Description
[0069] Figure 1 External view of a fluid-isolated power generation system;
[0070] Figure 2 A schematic diagram of a fluid drive mechanism using a spiral blade.
[0071] Figure 3 Cross-sectional view of a fluid-isolated power generation system. Detailed Implementation
[0072] To make the technical means, creative features, objectives and effects of the utility model easier to understand, the utility model will be further explained below with reference to specific illustrations.
[0073] Reference Figure 1 A fluid-isolated power generation system includes a power system and a generator linked to the power system. The generator includes a rotor 1 and a stator coil 3. The rotor 1 is a permanent magnet rotor.
[0074] It also includes an isolation pipe 2;
[0075] The wall thickness of the isolation pipe 2 is less than 3 mm;
[0076] The isolation pipe 2 is equipped with pipe docking mechanisms 4 at both ends to connect with other pipes or containers;
[0077] The isolation pipe 2 is equipped with a rotor support for the permanent magnet rotor.
[0078] The rotor support and the isolation pipe 2 form a direct or indirect fixed connection;
[0079] The permanent magnet rotor is mounted on a rotor support;
[0080] The stator coil 3 is sleeved outside the isolation pipe 2 and forms an electromagnetic induction relationship with the permanent magnet rotor;
[0081] The permanent magnet rotor is equipped with a front and rear conductive channel 5;
[0082] The rotor 1 is connected to a fluid drive mechanism 6, which is a fluid drive mechanism 6 that generates a driving force with the axially flowing fluid;
[0083] The fluid drive mechanism 6 is disposed in at least one of the following locations: in the isolation pipe 2 and in the pipe 7 to which the isolation pipe 2 is connected.
[0084] Traditional fluid power generation and fluid drive systems have a generator located outside the fluid pipeline, which is connected to the power system (turbo, expander, steam turbine, turbine, scroll mill, water turbine, impeller system, screw compressor) inside the fluid pipeline through transmission mechanisms such as sealed bearings and gearboxes.
[0085] Sealed bearings are expensive, easily damaged, and complex to replace. Gearboxes are expensive, require lubrication mechanisms, suffer from transmission energy loss, and require a relatively large space.
[0086] In this invention, the stator coil 3 is placed outside the isolation pipe 2, so there is no need for a sealed bearing or a wire that penetrates the flow channel (including the fluid pipe), thus achieving high-performance isolation between the inside and outside of the isolation pipe 2.
[0087] It eliminates the maintenance costs of sealed bearings, omits the gearbox, and eliminates the complex sealing and anti-aging designs required for the wires connected to the induction coil to penetrate the flow channel (including fluid pipes).
[0088] Very few designs use a method where the entire generator is placed inside the flow channel, which also requires the installation of wires that penetrate the flow channel, posing a safety hazard.
[0089] Moreover, placing the generator entirely within the flow channel inevitably leads to problems such as large equipment size and difficulty in generator maintenance.
[0090] Furthermore, placing the generator entirely within the flow channel inevitably means placing the induction coil within the flow channel as well. The induction coil is subjected to the impact of high-speed fluids (especially natural gas, flue gas, chemical gases, and other gases containing impurities) for a long time, causing corrosion, accelerated aging, and even leakage. This results in a very short lifespan for the entire system and poses a significant safety hazard of internal electrical spark "ignition".
[0091] This invention places the stator coil 3 outside the isolation pipe 2, making the relatively fragile induction coil in the generator easier to repair.
[0092] By placing the induction coil outside the isolation pipe 2, isolation is achieved between it and the fluid inside the pipe (especially natural gas, flue gas, chemical gases, and other gases containing impurities).
[0093] This avoids induction coil corrosion, slows down induction coil aging, and reduces the risk of induction coil leakage, thus extending the overall system lifespan. There is no safety hazard of internal electrical spark "ignition" within the pipeline (fluid pipeline), significantly improving safety.
[0094] The rotor 1 is connected to a fluid drive mechanism 6, which is a fluid drive mechanism 6 that generates a driving force with the axially flowing fluid;
[0095] The fluid drive mechanism 6 is disposed in at least one position in the isolation pipe 2 and the pipe connected to the isolation pipe 2.
[0096] The fluid drive mechanism 6 employs at least one of a turbine, screw, impeller, and spiral blade 8.
[0097] The fluid drive mechanism 6 is connected to the rotor 1 via a transmission.
[0098] The transmission connection adopts at least one of the following: direct connection to rotor 1 or connection to rotor 1 via a speed change system.
[0099] The isolation pipe 2 is made of stainless steel with a magnetic permeability of no more than 304.
[0100] The isolation pipe 2 is preferably a steel pipe made of one of the following materials: 304, 316, 321, and 347.
[0101] At least one end of the isolation pipe 2 is provided with a pipe docking mechanism 4, and the wall thickness of the pipe docking mechanism 4 is greater than the wall thickness of the isolation pipe 2.
[0102] The rotor support is located inside the pipe docking mechanism 4.
[0103] The rotor support is fixed to the inner side of the pipe docking mechanism 4 on the outside, and a bearing support is provided on the inner side of the rotor support.
[0104] The bearing of rotor 1 is mounted on a bearing support.
[0105] Both ends of the isolation pipe 2 are equipped with pipe docking mechanisms 4, and the wall thickness of the pipe docking mechanism 4 is greater than the wall thickness of the isolation pipe 2.
[0106] Two rotor supports are respectively installed inside the two pipe docking mechanisms 4.
[0107] Achieving front-to-back balance enhances stability and improves mechanical properties.
[0108] At least two rolling mechanisms are provided on the outer periphery of the rotor 1. The two rolling mechanisms abut against at least one inner wall of the isolation pipe 2, the pipe docking mechanism 4, and the pipe docking of the isolation pipe 2.
[0109] The inner wall against which the rolling mechanism rests is a circular inner wall;
[0110] The rolling mechanism on the outer periphery of rotor 1 on rotor 1 supports rotor 1 by abutting against the inner wall, thereby reducing the centrifugal force burden on the shaft of rotor 1.
[0111] The outer periphery of the rotor 1 is provided with at least three rolling mechanisms that are evenly arranged angularly around the axis of the rotor 1.
[0112] To achieve force balance in all directions, the rolling mechanism can use rollers, balls, etc.
[0113] The rotor 1 is provided with a front-to-back conductive channel 5;
[0114] No support mechanism is provided in channel 5. The rotor 1 is supported in the inner wall of the isolation pipe 2 by at least two rolling mechanisms provided on the outer periphery.
[0115] Eliminating the inner support of rotor 1 reduces disturbance to the fluid and reduces energy loss.
[0116] The isolation pipe 2 is a round pipe with a wall thickness greater than 1 mm and less than 4 mm.
[0117] This range of wall thickness in the circular tube ensures both good transmission of magnetic force and magnetic coupling performance, while also withstanding most fluid pressures in industrial environments.
[0118] There is a funnel-shaped pipe connected to the front of isolation pipe 2;
[0119] The small opening of the trumpet-shaped pipe connects to one end of the isolation pipe 2.
[0120] Whether the generator uses a generator or an electric motor, the smaller opening of the flared pipe represents the end with higher pressure. This helps improve mechanical performance for both power generation and fluid-driven applications.
[0121] The length of the fluid drive mechanism 6 is greater than 2m.
[0122] Distributing the force over a longer length reduces the force per unit area, protecting the fluid drive mechanism 6, while ensuring that the superimposed force is large enough to ensure sufficient force on the generator rotor and guarantee energy conversion power.
[0123] The fluid drive mechanism 6 adopts at least a two-section structure, and the two sections of the fluid drive mechanism 6 are connected by a live joint transmission.
[0124] The connecting method for the joint drive can be universal joint, cross joint, etc.
[0125] This provides a technical basis for setting the fluid drive mechanism 6 to be long enough and avoiding problems such as axial deformation and vibration.
[0126] The fluid drive mechanism 6 adopts at least a two-section structure, with one section of the fluid drive mechanism 6 being greater than 1m and less than 2m.
[0127] It also avoids problems such as axial deformation and vibration.
[0128] The fluid drive mechanism 6 is provided with a rotating shaft, and a support member is provided in the middle of the rotating shaft. The inner side of the support member is fixedly connected to the rotating shaft.
[0129] The outer side of the support member is provided with a rotating mechanism that abuts against the inner wall of the space it is in; by abutting against the inner wall, the fluid drive mechanism 6 is supported, thereby reducing the centrifugal force burden and dynamic balance burden of the fluid drive mechanism 6.
[0130] The fluid drive mechanism 6 is set long enough to improve the supporting base.
[0131] The outer periphery of the rotating shaft of the fluid drive mechanism 6 is provided with at least three rotating mechanisms that are evenly arranged angularly around the axis of the rotating shaft.
[0132] To achieve force balance in all directions, the rotating mechanism can use rollers, balls, etc.
[0133] The isolation pipe 2 is fitted with a pressure-bearing cavity, which is filled with pressurized fluid (gas or liquid).
[0134] The stator coil 3 is installed inside the pressure-bearing cavity, located between the isolation pipe 2 and the cavity wall of the pressure-bearing cavity;
[0135] Stator coil 3 is located in the pressurized fluid inside the pressure-bearing cavity.
[0136] This reduces the pressure difference between the inside and outside of the isolation pipe 2, ensuring the safety of the isolation pipe 2.
[0137] The pressurized fluid (gas or liquid) filling the pressure chamber can be either flowing or stationary.
[0138] In pressure fluids (gas or liquid), which can be flowing technical solutions:
[0139] The pressure-bearing cavity is connected to the isolation pipe 2 through the fluid inlet and fluid outlet.
[0140] The cross-sectional area at the widest point within the pressure-bearing cavity is more than ten times that of the smallest of the fluid inlet and outlet, ensuring that the overall fluid flow velocity within the pressure-bearing cavity is less than one-tenth of that within the isolation pipe 2.
[0141] Although the stator coil 3 is in contact with a pressurized fluid (gas or liquid), the fluid velocity inside the pressure chamber is very low, making it difficult to damage the coil of the stator coil 3.
[0142] The foregoing has shown and described the basic principles and main features of the utility model, as well as its advantages. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the utility model. Various changes and modifications can be made to the utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.
Claims
1. A fluidically isolated power generation system comprising a power system, and a generator coupled to the power system, the generator comprising a rotor and a stator coil, characterised in that, The rotor is a permanent magnet rotor; It also includes an isolation pipe; The wall thickness of the isolation pipe is less than 3 mm; The isolation pipe is equipped with pipe docking mechanisms at both ends to connect with other pipes or containers; The isolation pipe is equipped with a rotor support for the permanent magnet rotor. The rotor support and the isolation pipe are directly or indirectly fixedly connected; The permanent magnet rotor is mounted on a rotor support; The stator coil is sleeved outside the isolation pipe and forms an electromagnetic induction relationship with the permanent magnet rotor; The permanent magnet rotor is equipped with a front-to-back conductive channel.
2. The fluid-isolated power generation system according to claim 1, characterized in that, The permanent magnet rotor is equipped with a front-to-back conductive channel; Without a support mechanism in the channel, the permanent magnet rotor is supported in the inner wall of the isolation pipe by at least two rolling mechanisms set on the outer periphery.
3. The fluidically isolated power generation system of claim 1, wherein, The rotor is connected to a fluid drive mechanism, which is a fluid drive mechanism that generates a driving force with the axially flowing fluid. The fluid drive mechanism is located in at least one position in the isolation pipe or the pipe to which the isolation pipe is connected.
4. The fluid-isolated power generation system according to claim 1, characterized in that, A funnel-shaped pipe connects to the front of the isolation pipe; The small opening of the trumpet-shaped pipe connects to one end of the isolation pipe.
5. The fluidically isolated power generation system of claim 1, wherein, Both ends of the isolation pipe are equipped with pipe docking mechanisms, and the wall thickness of the pipe docking mechanisms is greater than the wall thickness of the isolation pipe. Two rotor supports are respectively installed inside the two pipe docking mechanisms.
6. The fluidically isolated power generation system of claim 1, wherein, At least two rolling mechanisms are provided on the outer periphery of the rotor, and the two rolling mechanisms abut against at least one of the inner walls of the isolation pipe, the pipe docking mechanism, and the pipe docking mechanism. The inner wall against which the rolling mechanism rests is a circular inner wall; The rolling mechanism on the outer periphery of the rotor supports the rotor by abutting against the inner wall, thereby reducing the centrifugal force burden on the rotor shaft.
7. The fluidically isolated power generation system of claim 1, wherein, The outer periphery of the rotor is provided with at least three rolling mechanisms that are evenly arranged angularly around the axis of the rotor.
8. The fluidically isolated power generation system of claim 1, wherein, The fluid drive mechanism is equipped with a rotating shaft, and a support member is provided in the middle of the rotating shaft. The inner side of the support member is fixedly connected to the rotating shaft. The outer side of the support is provided with a rotating mechanism that abuts against the inner wall of the space it is in; by abutting against the inner wall, the fluid drive mechanism is supported, reducing the centrifugal force burden and dynamic balance burden of the fluid drive mechanism.
9. The fluidically isolated power generation system of any of claims 1-8, wherein, The isolation pipe is fitted with a pressure-bearing cavity, which is filled with pressurized fluid. The stator coil is housed within the pressure-bearing cavity, located between the isolation pipe and the cavity wall of the pressure-bearing cavity; The stator coil is located in the pressurized fluid within the pressure-bearing cavity.
10. The fluid-isolated power generation system according to claim 1, characterized in that, The pressure-bearing cavity is connected to the isolation pipeline through the fluid inlet and fluid outlet. The cross-sectional area at the widest point within the pressure-bearing cavity is more than ten times that of the smallest of the fluid inlet and outlet, ensuring that the overall fluid flow velocity within the pressure-bearing cavity is less than one-tenth of that within the isolation pipe.