CN113482732A - Marine double power output's of adjustable speed integrated form unit - Google Patents
Marine double power output's of adjustable speed integrated form unit Download PDFInfo
- Publication number
- CN113482732A CN113482732A CN202110896973.8A CN202110896973A CN113482732A CN 113482732 A CN113482732 A CN 113482732A CN 202110896973 A CN202110896973 A CN 202110896973A CN 113482732 A CN113482732 A CN 113482732A
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- speed
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- permanent magnet
- turbine
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/08—Adaptations for driving, or combinations with, pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/12—Combinations with mechanical gearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/18—Lubricating arrangements
Abstract
The invention relates to a speed-adjustable marine double-power-output integrated unit which comprises a high-speed impulse turbine, a high-speed direct-current generator, a water feeding pump, a speed-adjustable magnetic coupler, a common rack, unit auxiliary pipelines and a unit speed adjusting system. The invention carries out integrated design on the steam turbine generator unit and the steam turbine water supply unit in the marine two-loop system, carries out simplified design on a large number of accessory equipment and system pipelines with similar structures and same functions of the original two-type unit, reduces the complexity of the system and the equipment, can greatly reduce the size and the weight of the marine equipment, improves the power density of the unit, simultaneously vacates certain allowance for the vibration and noise reduction design of a marine steam turbine auxiliary engine, and is convenient for the low noise design of the unit.
Description
Technical Field
The invention relates to a double-power output unit in an auxiliary steam turbine of a ship, in particular to a double-power output integrated unit.
Background
The double-power output unit is applied in the fields of civil power plants and the like, and is mainly structurally characterized in that one prime motor (a steam turbine or a diesel engine) is provided with two generators, or one end of one prime motor drags the generators, the other end of the prime motor drives the engine, one end of the prime motor is directly connected with the generators or carries out speed change through a speed reducer, and the prime motor and the generators (the engines) basically run at constant rotating speed.
In a marine two-circuit system, a steam turbine generator unit and a steam turbine water supply unit are two independent devices, and usually a generator and a water supply pump are respectively dragged by two turbines. The two machine sets are respectively provided with an independent adjusting system and a lubricating oil path system. The independent arrangement of the steam turbine generator unit and the steam turbine feed pump unit increases a large number of auxiliary equipment and system pipelines with similar structures and functions, so that the system in the engine room is complex, heavy in equipment and complex to control, and the integral optimization configuration and centralized control of the two-loop system are not facilitated.
In a marine two-loop system, a generator generally runs at a constant rotating speed, a water feeding pump needs to run at a variable rotating speed according to the water quantity requirement of a steam generator, and at present, no double-power output integrated unit exists and can drag the generator and the water feeding pump simultaneously.
Disclosure of Invention
The invention provides a double-loop system suitable for ships, and an integrated unit with double power output for speed-adjustable ships, which integrates the original two independent units (a steam turbine generator unit and a steam turbine feed pump unit), namely, a steam turbine simultaneously drives a generator and a feed pump, is used for reducing the size and the weight of equipment for ships, simultaneously reduces the complexity of the system and the equipment, effectively reduces fault links and improves the reliability.
In order to achieve the purpose, the technical scheme of the invention is as follows: the integrated unit comprises a high-speed impulse turbine, a high-speed direct-current generator, a water feeding pump, a speed-adjustable magnetic coupler, a common frame, a unit auxiliary pipeline and a unit speed regulating system, wherein the water feeding pump and the high-speed direct-current generator are respectively arranged at two ends of the high-speed impulse turbine, the high-speed impulse turbine is connected with the high-speed direct-current generator through the coupler, the high-speed impulse turbine is connected with the water feeding pump through the speed-adjustable magnetic coupler, the high-speed impulse turbine is used as a prime motor, and the high-speed direct-current drives the generator and the water feeding pump to do work.
Furthermore, the high-speed impulse turbine, the high-speed direct current generator, the water feeding pump and the unit auxiliary pipeline are integrally installed on a common rack.
Furthermore, the high-speed direct current generator runs at a constant rotating speed, and the water feeding pump can run at a variable rotating speed according to the working condition requirement.
Furthermore, the high-speed impulse turbine comprises a through flow part consisting of a nozzle arc section, double-row speed stages, a turning guide vane ring, a partition plate with 1-3 stages of pressure and three pressure stages.
Furthermore, the double-power output integrated unit for the speed-adjustable ship adopts an external lubricating oil supply system, and the external lubricating oil supply system supplies lubricating oil for the front/rear bearing and the thrust bearing of the steam turbine, the front/rear bearing of the generator and the front/rear bearing of the water supply pump, and the lubricating oil is respectively discharged to the external lubricating oil supply system through an oil return pipeline.
Furthermore, throttle orifice plates are arranged on oil inlet pipelines of the front/rear bearings and the thrust bearing of the steam turbine, the front/rear bearings of the generator and the front/rear bearings of the water supply pump and used for adjusting oil pressure and oil distribution.
Furthermore, the external lubricating oil supply system adopts an integrated structure, and the oil pipeline of the unit is integrated and arranged inside the rack; the lubricating oil adopted by the external lubricating oil supply system can be 68 # L-TSA turbine oil or warship antirust turbine oil.
Furthermore, the speed-adjustable magnetic coupler adopts a double-disc composite structure form of two copper conductor discs and two permanent magnet discs, and consists of a conductor rotor, a permanent magnet rotor and an air gap, wherein the conductor rotor comprises a conductor disc yoke and a conductor disc; the permanent magnet rotor comprises a permanent magnet disc yoke iron and a permanent magnet disc; the permanent magnet rotor serves as a driving disc, the permanent magnet rotor serves as a driven disc, an air gap is formed between the driving disc and the driven disc, the permanent magnet disc is of a fan-shaped structure and made of neodymium iron boron, the magnetizing direction is axial magnetizing, and the conductor disc is of a solid disc structure.
Further, the unit speed regulating system integrates a steam turbine speed regulating system and a feed pump speed regulating system and is controlled by a control box of the unit, the steam turbine speed regulating system adopts a high-voltage electro-hydraulic speed regulating system, and the high-voltage electro-hydraulic speed regulating system consists of a hydraulic actuating mechanism, a speed regulating control box, a measuring component and a high-voltage hydraulic block; the water feeding pump speed regulating system is connected with the water feeding pump through the speed-adjustable magnetic coupler and used for controlling the rotating speed of the water feeding pump.
The invention has the beneficial effects that:
the invention has the advantages that the miniaturization, high power density and low noise are the development direction of a new generation of marine steam turbine auxiliary engine, two types of important equipment (a steam turbine generator unit and a steam turbine water supply unit) in a marine two-loop system are integrally designed, a large number of auxiliary equipment and system pipelines with similar structures and functions of the original two types of units are simply designed, and the complexity of the system and the equipment is reduced. Through the integrated design, the size and the weight of the marine equipment can be greatly reduced, the power density of the unit is improved, meanwhile, a certain margin is set for the vibration and noise reduction design of the marine steam turbine auxiliary engine, and the low-noise design of the unit is facilitated.
Drawings
FIG. 1 is a block diagram;
FIG. 2 is a block thermodynamic system diagram;
FIG. 3 is a diagram of a unit oil system;
fig. 4 is a structural view of the magnetic coupling for an aircraft.
Detailed Description
The present invention is described in detail below by way of examples, but it should be understood that the examples are for illustrative purposes only and are not to be construed as limiting the scope of the present invention, and that modifications and adaptations of the present invention will occur to those skilled in the art without departing from the spirit and scope of the present invention as set forth herein.
The speed-adjustable marine double-power-output integrated unit is based on a marine 2 MW-level steam turbine auxiliary unit, and the outline drawing of the unit is shown in the attached drawing 1. The unit mainly comprises a high-speed impulse turbine 20, a high-speed direct current generator 21, a water feeding pump 22, a coupling 23, an adjustable-speed magnetic coupler 24, a common frame 25, unit auxiliary pipelines, instruments and the like. One end of the high-speed impulse turbine 20 is directly connected with a high-speed direct current generator 21 through a coupler 23 (in practical application, the high-speed turbine can also be connected with a low-speed alternating current generator through a speed reducer), and the other end is connected with a feed pump 22 through an adjustable-speed magnetic coupler 24. All the external members of the unit, the accessory equipment, the pipelines, the instruments and the like are integrally arranged and are all arranged on a common rack 25.
The thermodynamic system diagram of the unit is shown in fig. 2, and the main equipment comprises a turbine through-flow part, a main throttle valve 26, a steam distribution mechanism 27 and the like. The steam enters the through-flow section of the turbine via the main throttle valve 26 and the steam distribution mechanism 27. The through-flow part consists of a nozzle arc section, a double-row speed stage, a steering guide vane ring, a pressure 1-3 stage partition plate and three pressure stages. The steam through-flow part rotates the turbine rotor to drive the high-speed DC generator 21 and the water supply pump 22 to do work, and the exhaust steam is discharged into the condenser 28.
The unit lubricating oil system diagram is shown in figure 3. The unit adopts an external lubricating oil supply system, and the lubricating oil can adopt No. 68L-TSA turbine oil (superior product, GB11120-89) or marine antirust turbine oil (GJB 1601A-98). The lubricating oil system mainly provides lubricating oil for the front/rear bearing and the thrust bearing of the steam turbine, the front/rear bearing of the generator and the front/rear bearing of the water pump, and the lubricating oil is respectively discharged to the system through an oil return pipeline. An orifice plate 29 is provided on each bearing oil inlet line to regulate oil pressure and oil distribution. The lubricating oil system adopts an integrated structure, the oil pipelines of the unit are integrated and arranged inside the rack, and the whole arrangement of the unit tends to be concise.
The speed-adjustable magnetic coupler for the unit is shown in figure 4, adopts a double-disc composite structure form of two copper conductor discs and two permanent magnet discs, and mainly comprises a conductor rotor, a permanent magnet rotor and an air gap. The conductor rotor comprises a conductor disc yoke and a conductor disc; the permanent magnet rotor comprises a permanent magnet disc yoke iron and a permanent magnet disc; the conductor rotor is used as a driving disc, the permanent magnet rotor is used as a driven disc, and an air gap is formed between the driving disc and the driven disc. The permanent magnet disc is of a fan-shaped structure, made of neodymium iron boron, and magnetized in the axial direction. The conductor disc adopts a solid disc structure. The operation of the speed-adjustable magnetic coupler is based on the electromagnetic induction principle, when a motor is connected with a driving disc and the motor drives the driving disc to rotate, because the driven disc is relatively in a static state, the driving disc and the driven disc move relatively, a magnetic field generated by a permanent magnet penetrates through a copper disc and is in a rotating state, the copper disc cuts magnetic lines of force, induction current is generated in the copper disc, the induction current can generate an induction magnetic field, the induction magnetic field is mutually coupled with an original magnetic field generated by the permanent magnet, so that torque is formed, the driven disc is driven to rotate, and finally, the load is driven to rotate as the driven disc is connected with the load.
In this embodiment, the speed-adjustable magnetic coupler is composed of a driving disk assembly i, a driven disk assembly ii, and a speed-adjusting device assembly iii. The driven disc assembly II is arranged in the driving disc assembly I, and the driven disc assembly II is provided with a speed regulating device assembly III. As shown in fig. 4, the speed-adjustable magnetic coupler includes an input shaft 1, an input shaft sleeve 2, a left conductor disc yoke 3, a left conductor disc 4, a left permanent magnet disc 5, a left permanent magnet disc yoke 6, an output shaft sleeve 7, a right permanent magnet disc yoke 8, a right permanent magnet disc 9, a right conductor disc 10, a right conductor disc yoke 11, a nut 12, a stud 13, a double-shaft drive motor 14, a lead screw 15, a lead screw nut 16, a spring 17, and an output shaft 18. The input shaft 1 is fixedly connected with a left conductor disc yoke 3 in a driving disc assembly I through an input shaft sleeve 2, the left conductor disc yoke 3 and a right conductor disc yoke 11 are connected into a whole through a nut 12 and a stud 13, and a left conductor disc 4 and a right conductor disc 10 are fixedly connected to the inner side surfaces of the left conductor disc yoke 3 and the right conductor disc yoke 11 respectively; an output shaft sleeve 7 in the driven disc assembly II is installed between a left conductor disc 4 and a right conductor disc 10 and is fixedly connected with an output shaft 18 penetrating through a right conductor disc yoke 11, two ends of the outer cylinder of the output shaft sleeve 7 are connected with a left permanent magnet disc yoke 6 and a right permanent magnet disc yoke 8 in a sliding fit mode respectively, a speed adjusting device assembly III is connected between the left permanent magnet disc yoke 6 and the right permanent magnet disc yoke 8, and a left permanent magnet disc 5 and a right permanent magnet disc 9 are fixedly connected to the outer end faces of the left permanent magnet disc yoke 6 and the right permanent magnet disc yoke 8 respectively. The speed regulating device assembly III is composed of a double-shaft driving motor 14 arranged in a middle table disc of the output shaft sleeve 7, two lead screws 15 of the double-shaft driving motor 14, two lead screw nuts 16 and a spring 17, wherein the two lead screw nuts 16 and the spring 17 are fixedly connected to the left permanent magnet disc yoke 6 and the right permanent magnet disc yoke 8 respectively.
The unit speed regulating system integrates a steam turbine speed regulating system and a feed pump speed regulating system and is controlled by a control box of the unit. The speed regulating system of the steam turbine can adopt a high-voltage electro-hydraulic speed regulating system which mainly comprises a hydraulic actuating mechanism, a speed regulating control box, a measuring component, a high-voltage hydraulic block and other main parts. The speed regulation of the water feeding pump is controlled by the magnetic coupler, according to the water feeding amount required by the two-loop steam generator, a control box of the unit issues an instruction to a servo motor on the magnetic coupler, and the servo motor controls the output power of the magnetic coupler and the torque by controlling the air gap between the movable disc base body and the driving disc base body, so that the rotating speed of the water feeding pump is controlled.
Claims (9)
1. The utility model provides a marine double power output's of adjustable speed integrated form unit which characterized in that: the system comprises a high-speed impulse turbine, a high-speed direct current generator, a water feeding pump, a speed-adjustable magnetic coupler, a public frame, a unit auxiliary pipeline and a unit speed adjusting system, wherein the water feeding pump and the high-speed direct current generator are respectively arranged at two ends of the high-speed impulse turbine, the high-speed impulse turbine is connected with the high-speed direct current generator through the coupler, the high-speed impulse turbine is connected with the water feeding pump through the speed-adjustable magnetic coupler, and the high-speed impulse turbine is used as a prime mover and simultaneously drags the high-speed direct current generator and the water feeding pump to do work.
2. The dual power take-off integrated unit for a variable speed vessel according to claim 1, wherein: and the high-speed impulse turbine, the high-speed direct-current generator, the water feeding pump and the unit auxiliary pipeline are integrally installed on a common rack.
3. The dual power take-off integrated unit for a variable speed vessel according to claim 1, wherein: the high-speed direct current generator runs at a constant rotating speed, and the water feeding pump can run at a variable rotating speed according to the working condition requirement.
4. The dual power take-off integrated unit for a variable speed vessel according to claim 1, wherein: the high-speed impulse turbine comprises a through flow part consisting of a nozzle arc section, double-row speed stages, a turning guide vane ring, a partition plate with 1-3 stages of pressure and three pressure stages.
5. The dual power take-off integrated unit for a variable speed vessel according to claim 1, wherein: the double-power output integrated unit for the speed-adjustable ship adopts an external lubricating oil supply system, and the external lubricating oil supply system supplies lubricating oil for the front/rear bearing and the thrust bearing of the steam turbine, the front/rear bearing of the generator and the front/rear bearing of the water supply pump and respectively discharges the lubricating oil to the external lubricating oil supply system through an oil return pipeline.
6. The dual power take off integrated unit for a variable speed vessel according to claim 5 wherein: and throttle orifice plates are arranged on oil inlet pipelines of the front/rear bearings and the thrust bearing of the steam turbine, the front/rear bearings of the generator and the front/rear bearings of the water supply pump and used for adjusting oil pressure and oil distribution.
7. The dual power take off integrated unit for a variable speed vessel according to claim 5 wherein: the external lubricating oil supply system adopts an integrated structure, and the oil pipeline of the unit is integrated and arranged inside the rack; the lubricating oil adopted by the external lubricating oil supply system can be 68 # L-TSA turbine oil or warship antirust turbine oil.
8. The dual power take-off integrated unit for a variable speed vessel according to claim 1, wherein: the speed-adjustable magnetic coupler adopts a double-disc composite structure form of two copper conductor discs and two permanent magnet discs, and consists of a conductor rotor, a permanent magnet rotor and an air gap, wherein the conductor rotor comprises a conductor disc yoke and a conductor disc; the permanent magnet rotor comprises a permanent magnet disc yoke iron and a permanent magnet disc; the permanent magnet rotor serves as a driving disc, the permanent magnet rotor serves as a driven disc, an air gap is formed between the driving disc and the driven disc, the permanent magnet disc is of a fan-shaped structure and made of neodymium iron boron, the magnetizing direction is axial magnetizing, and the conductor disc is of a solid disc structure.
9. The dual power take off integrated unit for a variable speed vessel according to claim 8, wherein: the unit speed regulating system integrates a steam turbine speed regulating system and a feed pump speed regulating system and is controlled by a control box of the unit, the steam turbine speed regulating system adopts a high-voltage electro-hydraulic speed regulating system, and the high-voltage electro-hydraulic speed regulating system consists of a hydraulic actuating mechanism, a speed regulating control box, a measuring component and a high-voltage hydraulic block; the main part of the feed pump speed regulating system is a speed-adjustable magnetic coupler, a unit control system issues an instruction to the speed-adjustable magnetic coupler, and the output rotating speed is changed by adjusting the air gap between a driving disc and a driven disc through a motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110896973.8A CN113482732A (en) | 2021-08-05 | 2021-08-05 | Marine double power output's of adjustable speed integrated form unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110896973.8A CN113482732A (en) | 2021-08-05 | 2021-08-05 | Marine double power output's of adjustable speed integrated form unit |
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| Publication Number | Publication Date |
|---|---|
| CN113482732A true CN113482732A (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110896973.8A Pending CN113482732A (en) | 2021-08-05 | 2021-08-05 | Marine double power output's of adjustable speed integrated form unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151144A (en) * | 2022-01-04 | 2022-03-08 | 中国船舶重工集团公司第七0四研究所 | Speed regulation control system based on marine double-power output unit |
-
2021
- 2021-08-05 CN CN202110896973.8A patent/CN113482732A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151144A (en) * | 2022-01-04 | 2022-03-08 | 中国船舶重工集团公司第七0四研究所 | Speed regulation control system based on marine double-power output unit |
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