CN220015278U - Turbine and generator coaxial unit for natural gas differential pressure power generation - Google Patents
Turbine and generator coaxial unit for natural gas differential pressure power generation Download PDFInfo
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- CN220015278U CN220015278U CN202321124324.7U CN202321124324U CN220015278U CN 220015278 U CN220015278 U CN 220015278U CN 202321124324 U CN202321124324 U CN 202321124324U CN 220015278 U CN220015278 U CN 220015278U
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 239000003345 natural gas Substances 0.000 title claims abstract description 48
- 238000010248 power generation Methods 0.000 title claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 230000001360 synchronised effect Effects 0.000 claims abstract description 19
- 230000017525 heat dissipation Effects 0.000 claims description 36
- 238000007789 sealing Methods 0.000 claims description 15
- 239000000725 suspension Substances 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 239000010687 lubricating oil Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model provides a turbine and generator coaxial unit for natural gas differential pressure power generation, which comprises turbine equipment, a high-speed permanent magnet synchronous generator and an exhaust pipe, wherein the turbine equipment, the high-speed permanent magnet synchronous generator and the exhaust pipe are coaxially arranged, the turbine equipment and the high-speed permanent magnet synchronous generator are coaxially arranged, the turbine equipment is communicated with the inside of the high-speed permanent magnet synchronous generator, and the inside of the high-speed permanent magnet synchronous generator is communicated with the exhaust pipe. The advantages are that: the dynamic seal arrangement in the traditional unit is canceled, the turbine equipment is communicated with the interior of the generator, the natural gas flow after acting in the turbine equipment directly enters the generator to cool the generator, and then is discharged into a downstream pipeline through an exhaust pipe, so that natural gas leakage caused by dynamic seal failure is avoided, and the natural gas flow can be secondarily utilized to realize cooling of the generator.
Description
Technical Field
The utility model relates to the technical field of natural gas differential pressure power generation, in particular to a turbine and generator coaxial unit for natural gas differential pressure power generation.
Background
The natural gas is conveyed to all levels of users through a pipeline network by utilizing a method of pressurizing by a compressor, the natural gas is required to be depressurized through a pressure reducing valve according to different pressure requirements of the users in the process, and huge waste of pressure energy exists in the process. The method for recovering energy by using the pressure energy is to generate electricity by using natural gas pressure difference.
The core equipment for generating power by natural gas pressure difference is a natural gas expansion generator set. There are four types of existing expansion units:
1. screw expansion unit: in the positive displacement expander, the air flow flows along the axial direction along with the change of the inter-tooth volume between the screw rotors or between the screw rotors and the gears in the process of coordinated rotation, so that the purpose of expansion and depressurization is achieved. The screw rotor has a complex three-dimensional structure, and the processing difficulty is high. The screw expander system requires the addition of a vapor separator, i.e., to separate the exiting natural gas from the lube oil. The system consists of a screw machine, a generator, a lubricating oil system, a dynamic sealing system (a mechanical sealing system) and an oil-gas separator. The unit has low efficiency, high noise, large occupied space of equipment, easy leakage of natural gas and high maintenance cost of the equipment.
2. Turbine expansion unit: the turbine is a speed type expander, the air flow is increased in flow speed through a turbine nozzle, and the impeller is pushed to rotate to drive the generator to generate electricity. The unit consists of a turbine expander (hereinafter, the turbine is abbreviated as a turbine) +a speed reducer+a generator+a lubricating oil system+a dynamic sealing system (a mechanical sealing system). Compared with a screw expander, the turbine has higher efficiency and low noise, but because of more devices connected in a unit, the transmission loss among the devices is larger, natural gas is easy to leak, and the maintenance cost of the devices is high.
3. Turbine and generator coaxial unit using oil bearings: the turbine impeller and the generator are coaxially arranged, an intermediate speed reducer is omitted for connection, compared with the former two unit systems, the transmission loss is reduced, but the natural gas leakage risk caused by the failure of the dynamic seal still exists due to the existence of a lubricating oil system and a dynamic seal system (a mechanical seal system), and the increase of the rotation speeds of the turbine and the generator is limited by using an oil bearing, so that the increase of the unit efficiency is limited.
4. Turbine and generator coaxial unit using magnetic suspension bearing: the turbine impeller and the high-speed permanent magnet synchronous generator are coaxially arranged, the bearing uses a magnetic suspension bearing, a dynamic sealing system (dry gas sealing system) is additionally arranged between the turbine and the high-speed permanent magnet synchronous generator, and the high-speed permanent magnet synchronous generator is cooled by an independent cooling water system. The turbine and the generator are coaxially arranged, so that a speed reducer is omitted, transmission loss and equipment quantity are reduced, a high-speed permanent magnet synchronous generator is used, the machine set is high in rotating speed, high efficiency is obtained, a magnetic suspension bearing is used, a lubricating system is omitted, the machine set occupies a smaller area than the former three machine sets, but if a dynamic sealing system added between the turbine and the high-speed permanent magnet generator fails, natural gas leakage still can be caused, zero leakage of the natural gas cannot be realized by the machine set, potential safety hazards of leakage exist, and meanwhile, a dynamic sealing system (dry gas sealing system) with high cost and an independent motor cooling system are added on the basis of the high-cost magnetic suspension high-speed generator set, so that the machine set system is still complex and lacks the advantage of cost economy.
In summary, the field of natural gas pressure difference power generation lacks a natural gas pressure difference power generator unit which can realize the advantages of high power generation efficiency, simple system, easy maintenance, small occupied space of equipment, zero leakage of natural gas and cost economy.
Disclosure of Invention
The utility model aims to provide a turbine and generator coaxial unit for natural gas differential pressure power generation, so as to solve the problems in the prior art.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a turbine and generator coaxial unit for natural gas differential pressure power generation comprises turbine equipment, a high-speed permanent magnet synchronous generator and an exhaust pipe which are coaxially arranged;
the turbine equipment comprises an air inlet chamber, a static blade inner cylinder body, a static blade disc, a connecting disc, an impeller and a volute; the air outlet end of the air inlet chamber is coaxially and fixedly connected with the air inlet end of the volute, the air outlet end of the air inlet chamber and the air inlet end of the volute are respectively and coaxially and fixedly connected with a stationary blade disc and a connecting disc, and a certain gap exists between the stationary blade disc and the connecting disc in the axial direction; the outer wall of the stator blade inner cylinder body is fixedly connected with the inner wall of the air inlet chamber, a certain gap exists between the stator blade inner cylinder body and the stator blade disc in the axial direction, one end of the impeller extends into the stator blade inner cylinder body, and the other end of the impeller sequentially penetrates through the stator blade disc and the connecting disc to be fixedly connected with the input end of the generator rotor; a certain gap exists between the outer wall of the impeller and the inner peripheral walls of the stationary blade disc and the connecting disc;
the high-speed permanent magnet synchronous generator comprises a front magnetic bearing assembly, a motor shell, a generator stator, a heat dissipation sleeve, a generator rotor and a rear magnetic bearing assembly;
the input end and the output end of the generator rotor are respectively connected with the front magnetic bearing component and the rear magnetic bearing component, the front magnetic bearing component and the rear magnetic bearing component are respectively fixedly connected with the air inlet end face and the air outlet end face of the heat dissipation sleeve, and a certain gap exists between the front magnetic bearing component and the rear magnetic bearing component and between the front magnetic bearing component and the air inlet end face and the air outlet end face of the heat dissipation sleeve; the heat dissipation sleeve is arranged in the motor shell and is in coaxial interference fit with the motor shell, and the heat dissipation sleeve is sleeved on the outer peripheral side of the generator stator and is in interference fit with the motor shell;
the cooling channels are parallel to the axis of the heat dissipation sleeve, the generator stator is sleeved on the periphery of the generator rotor, a certain gap exists between the generator stator and the generator rotor in the radial direction, and the heat dissipation sleeve is provided with a plurality of cooling channels penetrating through the air inlet end and the air outlet end of the heat dissipation sleeve along the circumferential direction of the heat dissipation sleeve;
the air outlet end of the volute is fixedly connected with the air inlet end of the motor shell, and the air outlet end of the motor shell is fixedly connected with the air inlet end of the exhaust pipe.
Preferably, the heat dissipation sleeve is provided with heat dissipation fins, and the heat dissipation fins are located in the cooling channel.
Preferably, the front magnetic bearing component and the rear magnetic bearing component both adopt magnetic suspension bearings, and two ends of the generator rotor are respectively in clearance fit with the front magnetic bearing component and the rear magnetic bearing component.
Preferably, a plurality of connecting arms extending outwards are arranged on the outer wall of the stationary blade inner cylinder body at intervals along the circumferential direction of the outer wall of the stationary blade inner cylinder body, and a certain gap exists between the outer wall of the stationary blade inner cylinder body of two adjacent connecting arms and the inner wall of the air inlet chamber.
Preferably, the impeller is fixedly connected with the input end of the generator rotor through a pull rod bolt.
Preferably, the exhaust pipe is sealed by an O-shaped ring between the air outlet end of the exhaust pipe and the air inlet end of the volute, between the air outlet end of the volute and the air inlet end of the motor shell, and between the air outlet end of the motor shell and the air inlet end of the exhaust pipe.
The beneficial effects of the utility model are as follows: 1. the dynamic seal arrangement in the traditional unit is canceled, the turbine equipment is communicated with the interior of the generator, the natural gas flow after acting in the turbine equipment directly enters the generator to cool the generator, and then is discharged into a downstream pipeline through an exhaust pipe, so that natural gas leakage caused by dynamic seal failure is avoided, and the natural gas flow can be secondarily utilized to realize cooling of the generator. 2. The turbine equipment and the generator are coaxially arranged, so that transmission equipment is omitted, and transmission loss and equipment occupation space are reduced. 3. The magnetic suspension bearing is adopted, so that the high-speed and high-efficiency characteristics of the turbine can be realized, a lubricating oil system is omitted, and the equipment maintenance cost is reduced.
Drawings
FIG. 1 is a cross-sectional view of a unit in an embodiment of the utility model;
FIG. 2 is a cross-sectional view A-A of FIG. 1 in an embodiment of the utility model;
FIG. 3 is a cross-sectional view B-B of FIG. 1 in an embodiment of the utility model.
In the figure: 1-an intake chamber; 2-stationary blade inner cylinder; 3-stationary blade disk; 4-connecting discs; 5-impeller; 6-volute; 7-a pull rod bolt; 8-a front magnetic bearing assembly; 9-cooling channels; 10-a motor housing; 11-generator stator; 12-a heat dissipation sleeve; 13-heat sink; 14-generator rotor; 15-a rear magnetic bearing assembly; 16-junction box; 17-exhaust pipe.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the detailed description is presented by way of example only and is not intended to limit the utility model.
As shown in fig. 1 to 3, in the present embodiment, there is provided a turbine and generator coaxial set for natural gas differential pressure power generation, comprising a turbine device and a high-speed permanent magnet synchronous generator coaxially arranged, and an exhaust pipe 17;
1. the turbine equipment comprises an air inlet chamber 1, a static blade inner cylinder body 2, a static blade disc 3, a connecting disc 4, an impeller 5, a volute 6 and a pull rod bolt 7; the air outlet end of the air inlet chamber 1 is fixedly connected with the air inlet end of the volute 6 in a coaxial manner, the air outlet end of the air inlet chamber 1 and the air inlet end of the volute 6 are respectively fixedly connected with a stationary blade disc 3 and a connecting disc 4 in a coaxial manner, and a certain gap exists between the stationary blade disc 3 and the connecting disc 4 in the axial direction; the outer wall of the stator blade inner cylinder body 2 is fixedly connected with the inner wall of the air inlet chamber 1, a certain gap exists between the stator blade inner cylinder body 2 and the stator blade disc 3 in the axial direction, one end of the impeller 5 extends inside the stator blade inner cylinder body 2, and the other end of the impeller 5 sequentially penetrates through the stator blade disc 3 and the connecting disc 4 to be fixedly connected with the input end of the generator rotor 14 through the pull rod bolt 7; a certain gap exists between the outer wall of the impeller 5 and the inner peripheral walls of the stator blade disc 3 and the connecting disc 4.
In this embodiment, the air inlet chamber 1 is fixedly connected with the volute 6 by bolts, and positioning is achieved by adopting a spigot matching mode. The stationary blade inner cylinder body 2 is fixedly connected with the air inlet chamber 1 through bolts, and positioning is achieved in a spigot matching mode. The stationary blade disc 3 is fixedly connected with the air inlet chamber 1 through bolts, and positioning is achieved in a spigot matching mode. The connecting disc 4 is fixedly connected with the volute 6 through bolts, and positioning is achieved in a spigot matching mode.
In this embodiment, a plurality of connection arms extending outwards are disposed on the outer wall of the stationary blade inner cylinder 2 at intervals along the circumferential direction, and a certain gap exists between the outer wall of the stationary blade inner cylinder 2 of two adjacent connection arms and the inner wall of the air inlet chamber 1.
The natural gas flow flows from the air inlet chamber 1 through the annular channel (gap between the stator blade inner cylinder body 2 and the stator blade disc 3) to accelerate, and then enters the annular channel (gap between the connecting disc 4 and the impeller 5) to push the impeller 5 to rotate for doing work. The natural gas flow after doing work flows out of the volute 6 into the generator.
2. The high-speed permanent magnet synchronous generator comprises a front magnetic bearing assembly 8, a motor shell 10, a generator stator 11, a heat dissipation sleeve 12, a generator rotor 14 and a rear magnetic bearing assembly 15;
the two ends of the generator rotor 14 are respectively connected with the front magnetic bearing assembly 8 and the rear magnetic bearing assembly 15, the front magnetic bearing assembly 8 and the rear magnetic bearing assembly 15 are respectively and fixedly connected with the air inlet end face and the air outlet end face of the heat dissipation sleeve 12, and a certain gap exists between the two end faces and the air inlet end face and the air outlet end face of the heat dissipation sleeve 12; the heat dissipation sleeve 12 is disposed in the motor housing 10 and is in interference fit with the motor housing 10 coaxially, and the heat dissipation sleeve 12 is disposed on the outer circumferential side of the generator stator 11 in a sleeved mode and is in interference fit with the generator stator 11.
The cooling jacket 12 is provided with a plurality of cooling channels 9 penetrating through the end face of the air inlet end and the end face of the air outlet end along the circumferential direction of the cooling jacket 12, the cooling channels 9 are parallel to the axis of the cooling jacket 12, the generator stator 11 is sleeved on the periphery of the generator rotor 14, a certain gap exists between the generator stator and the generator rotor in the radial direction, the cooling jacket 12 is provided with a plurality of cooling channels 9 penetrating through the air inlet end and the air outlet end along the circumferential direction of the cooling jacket, and the cooling channels 9 are parallel to the axis of the cooling jacket.
In this embodiment, the front magnetic bearing assembly 8 and the rear magnetic bearing assembly 15 are both magnetic bearings.
In this embodiment, the front magnetic bearing assembly 8 is fixedly connected with the air inlet end face of the heat dissipation sleeve 12 through bolts, and the rear magnetic bearing assembly 15 is fixedly connected with the air outlet end face of the heat dissipation sleeve 12 through bolts. The motor shell 10 and the heat dissipation sleeve 12 are radially fixed in an interference fit mode, the motor shell 10 and the heat dissipation sleeve 12 are axially positioned in a spigot fit mode, the heat dissipation sleeve 12 and the generator stator 11 are radially fixed in an interference fit mode, and the heat dissipation sleeve 12 and the generator stator 11 are axially positioned in a spigot fit mode. The generator rotor 14 forms clearance fit with the front magnetic bearing assembly 8 and the rear magnetic bearing assembly 15, and in the electrified state of the front magnetic bearing assembly 15 and the rear magnetic bearing assembly 15, the generator rotor 14 realizes non-contact suspension without oil lubrication.
In this embodiment, the cooling channel 9 is formed on the heat dissipation sleeve 12, and the heat dissipation fins 13 are located in the cooling channel 9.
In this embodiment, the high-speed permanent magnet synchronous generator further comprises a junction box 16, and the cable of the generator is connected out of the junction box 16. The motor shell 10 is internally provided with a mounting seat, the generator rotor 14 is connected with the mounting seat through the rear magnetic bearing assembly 15, the junction box 16 can be arranged on the mounting seat, wiring holes are arranged on the motor shell 10 and the exhaust pipe 17, and then a cable of the generator is led out of the unit.
3. The air outlet end of the volute 6 is fixedly connected with the air inlet end of the motor shell 10, and the air outlet end of the motor shell 10 is fixedly connected with the air inlet end of the exhaust pipe 17.
A dynamic sealing system (such as a dry gas sealing system) is not required between the turbine equipment and the high-speed permanent magnet synchronous generator, and an independent cooling system is not required for the high-speed permanent magnet synchronous generator, so that the generator is cooled by natural gas flow. The natural gas flow process is as follows:
the natural gas flow is divided into two paths after flowing through the stationary blade disc 3, the impeller 5 and the volute 6 from the inlet chamber 1: one path enters a gap between the generator stator 11 and the generator rotor 14 from the cooling channel 9 on the heat dissipation sleeve 12, cools and takes away heat generated by the generator rotor 14, and then flows out of the exhaust pipe 17. The other path of heat flows through the cooling fins 13 on the cooling jacket 12 to cool and take away the heat generated by the generator stator 11, and then flows out of the exhaust pipe 17. The natural gas flow is sealed in the pipeline-shaped shell formed by sequentially and fixedly connecting the air inlet chamber 1, the volute 6, the motor shell 10 and the exhaust pipe 17, and the connection parts among the air inlet chamber 1, the volute 6, the motor shell 10 and the exhaust pipe 17 are all sealed by adopting O-shaped rings, so that a dynamic sealing system is not easy to damage, and zero leakage can be realized.
Because dynamic seal systems (e.g., dry gas seal systems) are demanding on the cleanliness of the seal gas, if the seal gas is contaminated, the seals in the seal may be damaged, resulting in leaks. The dynamic sealing system is a potential leakage point, and the unit provided by the utility model eliminates the dynamic sealing system, so that the hidden danger of natural gas leakage is fundamentally eliminated.
In the embodiment, the air inlet chamber 1 of the unit is connected with a natural gas pipe, the exhaust pipe 17 is connected with a downstream pipe, natural gas drives the impeller 5 of the turbine device to rotate to apply work, the high-speed permanent magnet synchronous generator is driven to generate power, the natural gas after applying work flows into a downstream pipeline, the whole unit replaces the function of an original pressure reducing valve, and meanwhile, the pressure energy is recovered, converted into mechanical energy and the pressure reducing function is completed.
By adopting the technical scheme disclosed by the utility model, the following beneficial effects are obtained:
the utility model provides a turbine and generator coaxial unit for natural gas differential pressure power generation, which is used for eliminating dynamic seal arrangement in a traditional unit, wherein turbine equipment is communicated with the inside of a generator, natural gas flow after acting in the turbine equipment directly enters the generator to cool the generator and is then discharged into a downstream pipeline through an exhaust pipe, so that natural gas leakage caused by dynamic seal failure is avoided, and the natural gas flow can be secondarily utilized to realize cooling of the generator. The turbine equipment and the generator are coaxially arranged, so that transmission equipment is omitted, and transmission loss and equipment occupation space are reduced. The magnetic suspension bearing is adopted, so that the high-speed and high-efficiency characteristics of the turbine can be realized, a lubricating oil system is omitted, and the equipment maintenance cost is reduced.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which is also intended to be covered by the present utility model.
Claims (6)
1. A turbine and coaxial unit of generator for natural gas differential pressure electricity generation, its characterized in that: the device comprises turbine equipment, a high-speed permanent magnet synchronous generator and an exhaust pipe which are coaxially arranged;
the turbine equipment comprises an air inlet chamber, a static blade inner cylinder body, a static blade disc, a connecting disc, an impeller and a volute; the air outlet end of the air inlet chamber is coaxially and fixedly connected with the air inlet end of the volute, the air outlet end of the air inlet chamber and the air inlet end of the volute are respectively and coaxially and fixedly connected with a stationary blade disc and a connecting disc, and a certain gap exists between the stationary blade disc and the connecting disc in the axial direction; the outer wall of the stator blade inner cylinder body is fixedly connected with the inner wall of the air inlet chamber, a certain gap exists between the stator blade inner cylinder body and the stator blade disc in the axial direction, one end of the impeller extends into the stator blade inner cylinder body, and the other end of the impeller sequentially penetrates through the stator blade disc and the connecting disc to be fixedly connected with the input end of the generator rotor; a certain gap exists between the outer wall of the impeller and the inner peripheral walls of the stationary blade disc and the connecting disc;
the high-speed permanent magnet synchronous generator comprises a front magnetic bearing assembly, a motor shell, a generator stator, a heat dissipation sleeve, a generator rotor and a rear magnetic bearing assembly;
the input end and the output end of the generator rotor are respectively connected with the front magnetic bearing component and the rear magnetic bearing component, the front magnetic bearing component and the rear magnetic bearing component are respectively fixedly connected with the air inlet end face and the air outlet end face of the heat dissipation sleeve, and a certain gap exists between the front magnetic bearing component and the rear magnetic bearing component and between the front magnetic bearing component and the air inlet end face and the air outlet end face of the heat dissipation sleeve; the heat dissipation sleeve is arranged in the motor shell and is in coaxial interference fit with the motor shell, and the heat dissipation sleeve is sleeved on the outer peripheral side of the generator stator and is in interference fit with the motor shell;
the cooling channels are parallel to the axis of the heat dissipation sleeve, the generator stator is sleeved on the periphery of the generator rotor, a certain gap exists between the generator stator and the generator rotor in the radial direction, and the heat dissipation sleeve is provided with a plurality of cooling channels penetrating through the air inlet end and the air outlet end of the heat dissipation sleeve along the circumferential direction of the heat dissipation sleeve;
the air outlet end of the volute is fixedly connected with the air inlet end of the motor shell, and the air outlet end of the motor shell is fixedly connected with the air inlet end of the exhaust pipe.
2. The turbine and generator coaxial set for differential natural gas pressure power generation of claim 1, wherein: and the radiating sleeve is provided with radiating fins, and the radiating fins are positioned in the cooling channel.
3. The turbine and generator coaxial set for differential natural gas pressure power generation of claim 1, wherein: the front magnetic bearing assembly and the rear magnetic bearing assembly are both magnetic suspension bearings, and two ends of the generator rotor are respectively in clearance fit with the front magnetic bearing assembly and the rear magnetic bearing assembly.
4. The turbine and generator coaxial set for differential natural gas pressure power generation of claim 1, wherein: the outer wall of the stationary blade inner cylinder body is provided with a plurality of connecting arms extending outwards along the circumferential direction at intervals, and a certain gap exists between the outer wall of the stationary blade inner cylinder body of two adjacent connecting arms and the inner wall of the air inlet chamber.
5. The turbine and generator coaxial set for differential natural gas pressure power generation of claim 1, wherein: the impeller is fixedly connected with the input end of the generator rotor through a pull rod bolt.
6. The turbine and generator coaxial set for differential natural gas pressure power generation of claim 1, wherein: o-shaped rings are adopted for sealing between the air outlet end of the exhaust pipe and the air inlet end of the volute, between the air outlet end of the volute and the air inlet end of the motor shell, and between the air outlet end of the motor shell and the air inlet end of the exhaust pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321124324.7U CN220015278U (en) | 2023-05-11 | 2023-05-11 | Turbine and generator coaxial unit for natural gas differential pressure power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321124324.7U CN220015278U (en) | 2023-05-11 | 2023-05-11 | Turbine and generator coaxial unit for natural gas differential pressure power generation |
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| Publication Number | Publication Date |
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| CN220015278U true CN220015278U (en) | 2023-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321124324.7U Active CN220015278U (en) | 2023-05-11 | 2023-05-11 | Turbine and generator coaxial unit for natural gas differential pressure power generation |
Country Status (1)
| Country | Link |
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| CN (1) | CN220015278U (en) |
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2023
- 2023-05-11 CN CN202321124324.7U patent/CN220015278U/en active Active
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