CN114961885A - Power switching method of double-power driving unit - Google Patents
Power switching method of double-power driving unit Download PDFInfo
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- CN114961885A CN114961885A CN202210493734.2A CN202210493734A CN114961885A CN 114961885 A CN114961885 A CN 114961885A CN 202210493734 A CN202210493734 A CN 202210493734A CN 114961885 A CN114961885 A CN 114961885A
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- steam turbine
- power generation
- generation function
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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
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Abstract
The invention aims to provide a power switching method of a double-power driving unit, which is characterized in that a combined locking type synchronous automatic clutch is arranged between a motor and a load, a disengagement locking speed change clutch is arranged between a steam turbine and the load, and the working conditions of random single-power load operation, double-power parallel operation, power switching operation, motor power generation operation, integral or independent turning of the steam turbine and the like can be realized. The invention solves the problem that the original similar unit cannot run if the motor fails, and improves the flexibility of unit power selection, the reliability of unit running and the convenience of unit maintenance. The combination of the locking clutch meets the power generation working condition of the unit, and the motor can quit the operation under the condition that the unit operates dynamically if the motor fails, so that the operation of the unit is not influenced. Through setting up the off-off lock clutch, except realizing the original function of unit operating mode, satisfied the independent barring requirement of steam turbine, practice thrift the energy consumption, reduce equipment wear, improve equipment utilization ratio.
Description
Technical Field
The invention relates to a power control method of a unit, in particular to a power control method of a double-power unit.
Background
The steam-electricity double-power combined unit is widely applied to industries such as steel, electric power, chemical engineering and the like at present. The main structural form of the existing unit is as follows: the system comprises a motor (capable of being switched between an electric state and a power generation state), a speed change gear box, a load (an induced draft fan, a blower, a water pump and the like), a speed change clutch and a steam turbine. The main working process of the unit is as follows:
(1) the motor is started, the motor is in a motor state to drive the load to work, the clutch is in a disengagement state, the output end rotates along with the motor, and the input end is static;
(2) after the steam turbine meets the working condition, the steam turbine is started to drive the input end of the clutch to rotate;
(3) when the rotating speed of the input end of the clutch is the same as that of the output end of the clutch, the speed change clutch is combined, the load power is born by the steam turbine, and the power of the motor is reduced;
(4) when the power of the steam turbine is large enough, the output power of the steam turbine is larger than the load power, and the motor is converted into a generator state from a motor state;
(5) when the steam turbine cannot meet the stable operation condition or needs to be overhauled, the speed reduction and speed change clutch of the steam turbine is disengaged, and the motor is converted into an electric state to continuously drive the load;
(6) when the machine is stopped, the turbine is required to be stopped at a reduced speed, the speed change clutch is in a disengaged state, then the motor is in a motor state, and then the motor is stopped at a reduced speed.
Through the working process, when the unit is started, the motor is started to drive the load, and then the steam turbine is started and works in parallel. When the unit is stopped, the turbine must be stopped first, and then the motor can be stopped. If the motor breaks down, the unit can not work normally, and if the steam turbine can not be stopped, the motor can not be stopped. Meanwhile, the rotor characteristic of the steam turbine needs the long-time barring of the steam turbine after the shutdown, the required barring time of the motor and the load after the shutdown is short, the whole shaft system adopting the original structure needs to be jointly barring with the steam turbine, and the bearing is easy to wear under the low-rotating-speed barring condition and consumes energy. Therefore, the reliability, convenience and maintainability of the double-power operation of the unit arrangement form are general.
Disclosure of Invention
The invention aims to provide a power switching method of a double-power driving unit, which can improve the convenience of power selection of a steam-electricity double-power combined unit and the maintainability of a power main machine
The purpose of the invention is realized as follows:
the invention relates to a power switching method of a double-power driving unit, which is characterized by comprising the following steps: the double-power driving unit comprises a steam turbine, a release locking type speed change clutch, a load, a combined locking type synchronous automatic clutch and a motor with a power generation function which are sequentially connected;
(1) when the motor with the power generation function works with a load alone, the motor with the power generation function is started and combined with the locking clutch to be combined, the load is borne by the motor with the power generation function alone, the steam turbine is static, and the unlocking locking clutch is in an unlocking state;
(2) when the steam turbine works with load alone, the steam turbine starts the release locking type speed change clutch, the release locking type clutch is in a combined state, the load is completely borne by the steam turbine, and the motor with the power generation function is static;
(3) starting a steam turbine on the basis that a motor with a power generation function works alone with a load, releasing the locked synchronous automatic clutch from the end of the steam turbine to be combined after the combined rotating speed is reached, and keeping the combined state by combining the locked synchronous automatic clutch, wherein the load power is shared by the motor with the power generation function and the steam turbine;
(4) on the basis of the independent load-carrying work of the steam turbine, a motor with a power generation function is started, after the combined rotating speed is reached, the locked synchronous automatic clutch is combined, a release locked variable speed clutch at the end of the steam turbine keeps a combined state, and at the moment, the load power is jointly borne by the motor with the power generation function and the steam turbine;
(5) when the load power is shared by the motor with the power generation function and the steam turbine, a combined locking signal is firstly given to the combined locking type synchronous automatic clutch, a locking oil cylinder locking toothed ring moves to complete clutch combination locking, the opening degree of a regulating valve of the steam turbine is increased after the combination locking is completed, the output power of the steam turbine is improved, and when the output power is greater than the load power, the motor with the power generation function is changed from an electric state to a power generation state;
(6) when the single load-carrying work of the motor with the power generation function is converted into the single load-carrying work of the steam turbine, the steam turbine is started, the parallel operation of the steam turbine and the motor with the power generation function is completed, the power output of the steam turbine is increased, the power output of the motor with the power generation function approaches zero, the motor with the power generation function is stopped, the combined locking type synchronous automatic clutch at the end of the motor is disengaged at the moment, and the switching of the power from the motor with the power generation function to the steam turbine is completed;
(7) when the operation of the turbine with load alone is changed into the operation of the motor with power generation function with load alone, the motor with power generation function is started, the parallel operation of the turbine and the motor with power generation function is completed, then the power output of the turbine is reduced, the turbine is stopped when the power output of the turbine approaches zero, the release locking type variable speed clutch is released at the moment, and the switching of the power from the turbine to the motor with power generation function is completed;
(8) when a motor with a power generation function works with load alone or a steam turbine works with load alone and is ready to stop for turning a train, a combined locking instruction is given to the combined locking type synchronous automatic clutch before the stop instruction starts, combined locking is completed, and then the unit is decelerated and stopped; when the steam turbine works with load and is ready to stop for turning up the vehicle, the motor with the power generation function is inching after the steam turbine stops, the combined locking type synchronous automatic clutch is combined to be in a combined locking state, and then the stop state of the steam turbine is kept; when the steam turbine is in complete standstill, the turning gear is put into operation by manually combining the turning gear of the steam turbine.
The present invention may further comprise:
1. when the motor with the power generation function and the steam turbine run in parallel, if the motor with the power generation function breaks down and needs emergency stop, the power of the steam turbine is increased to meet the load requirement, then the motor with the power generation function stops, and the locked synchronous automatic clutch is combined to release the operation.
2. When the motor with the power generation function and the steam turbine run in parallel and the steam turbine is turned into the single load-carrying work of the steam turbine, the opening of the steam turbine is increased, when the power output of the motor with the power generation function approaches zero, a motor power supply with the power generation function is closed, the motor power supply is disengaged by combining the locking type synchronous automatic clutch, and the disengagement locking type speed change clutch keeps the state unchanged.
3. When the motor with the power generation function and the steam turbine run in parallel and the motor with the power generation function is converted into the single load-carrying work, the opening of the steam turbine is gradually reduced until the steam turbine is decelerated and stopped, the release locking type speed change clutch is released at the moment, and the state is kept unchanged by combining the locking type synchronous automatic clutch.
The invention has the advantages that: the combined use of the locking clutch and the releasing locking clutch is combined, so that the unit of the steam-electricity double-power combined unit can operate more flexibly; and if any single power main machine fails, the unit can still normally operate, reliability is improved, and unit maintenance is facilitated. Meanwhile, the operating condition of independent turning gear of the steam turbine is increased, the equipment loss is reduced, and the energy is saved.
Drawings
FIG. 1 is a schematic diagram of the arrangement of the whole unit and a power flow diagram of a motor with a load alone;
FIG. 2 is a power flow diagram for a turbine with individual loads;
FIG. 3 is a power flow diagram of the parallel operation of the motor and the steam turbine;
FIG. 4 is a power flow diagram for a power generation condition;
FIG. 5 is a power flow diagram of the switching of the operating condition of the motor to the operating condition of the turbine;
FIG. 6 is a power flow diagram for switching from turbine operating mode to motor operating mode;
FIG. 7 is a power flow diagram of the unit integral barring;
FIG. 8 is a power flow diagram for a turbine turning gear alone.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
with reference to fig. 1 to 8, the technical solution adopted for solving the technical problems of the present invention is to add a coupling lock clutch between a motor (capable of switching between an electric state and a power generation state) and a load (an induced draft fan, a blower, a water pump, etc.) and a decoupling lock type variable speed clutch between a turbine and the load in the original unit arrangement form. By combining the blocking clutch assembly, both a forward transmission of the power flow from the electric machine to the load (electric state) and a reverse transmission of the power flow from the steam turbine to the electric machine (electric state) can be achieved. The problem of independent turning of the turbine in the static state of the unit can be solved by disengaging the locking speed change clutch. And the machine set can automatically realize the input or the exit of the motor or the steam turbine under dynamic or static conditions through a disengagement locking speed change clutch at the steam turbine end and a combination locking clutch at the motor end.
The unit arrangement form is as follows:
the motor, the combined locking clutch, the load, the disengaged locking speed change clutch and the steam turbine. Wherein the turning gear is integrated on the steam turbine.
The main power machine can be selected by the unit under dynamic and static conditions according to requirements, and the main working conditions which can be realized by the unit are shown in the following table 1.
Table 1 main operating conditions of the unit
As shown in table 1, by locking the synchronous clutch and the bidirectional clutch, the unit according to the present invention can realize 4 normal operation conditions of single motor with load operation, single turbine with load operation, parallel operation of the motor and the turbine, and single turbine with load operation and motor power generation operation, and can realize 2 power switching conditions of switching power from the motor to the turbine or from the turbine to the motor, and in addition, can realize 2 barring conditions of integral barring of the unit and single turbine barring.
The locking clutch device consists of a synchronous automatic clutch and a locking device. Under normal conditions, the synchronous automatic clutch can only transmit power in the forward direction, and the locking device mainly has the function of ensuring that the synchronous automatic clutch cannot be disengaged when the power is transmitted in the reverse direction (under the power generation working condition of a motor or the integral turning of a unit), so that the power is allowed to be transmitted in the reverse direction. Meanwhile, the synchronous automatic clutch can automatically control the motor to be put into and taken out of the unit as required.
The disengagement locking speed change clutch is composed of a synchronous automatic clutch with disengagement locking device and a pair of speed change gears. The synchronous automatic clutch is used for automatically controlling the input and the disconnection of the power of the steam turbine according to the rotating speed of the steam turbine, the disconnecting locking device is used for ensuring that the part of a shaft system loaded to the motor can keep a static state under the working condition of independent turning of the steam turbine, and the speed change gear can be matched with the rotating speed of the shaft system between the steam turbine and the load.
In condition 1 in table 1, the electric machine 1 starts the engaging lock clutch engagement 2, the load 3 is borne by the electric machine 1 alone, the steam turbine 5 is stationary, and the disengaging lock clutch 4 is in the disengaged state.
At condition 2 in table 1, the turbine 5 is unlocked by the release lock, and the release lock clutch 4 is engaged. The load 3 is fully borne by the turbine 5 and the motor 1 is stationary.
On the basis of working condition 1 or working condition 2, the parallel operation of the working condition 3 double-power unit can be realized.
If the unit operates under the working condition 1, the steam turbine 5 is started at the moment, after the combination rotating speed is reached, the end of the steam turbine is separated from the locked synchronous automatic clutch 4 to be combined, and the combined locked synchronous automatic clutch 2 at the end of the motor keeps a combined state. In this case, the load 3 is powered by the electric machine 1 and the steam turbine 5.
If the unit operates under the working condition 2, the motor 1 is started at the moment, after the combined rotating speed is reached, the combined locking type synchronous automatic clutch 2 at the motor end is combined, and the unlocking and locking clutch 4 at the turbine end keeps a combined state. In this case, the load 3 power is shared by the motor and the turbine.
Meanwhile, the power fluctuation of the steam turbine caused by the change of factors such as steam quantity and the like can be automatically compensated by the power of the motor, so that the total power output by the unit is kept stable and unchanged, and the stable operation of the unit is facilitated under the working condition. Under the working condition 3, if the motor is required to be quitted from running, namely, when the working condition 2 is converted, the opening degree of the throttle of the steam turbine 5 needs to be increased, when the power output of the motor 1 is approximately zero, the power supply of the motor 1 is closed, the end of the motor is disengaged by combining the locking type clutch 2, and the remaining clutches are kept unchanged.
Under the working condition 3, if the steam turbine 5 is to be quitted from operation at the moment, namely when the working condition 1 is converted, the opening degree of the throttle of the steam turbine 5 needs to be gradually reduced until the speed of the steam turbine 5 is reduced and the steam turbine is stopped, at the moment, the end of the steam turbine is disengaged from the locking clutch 4, and the end of the motor is combined with the locking clutch 2 to keep the state unchanged.
Under working condition 3, if the steam amount is rich at the moment, the condition that the output power of the steam turbine is greater than the load power is met, and working condition 4 and the motor power generation operation working condition can be realized on the basis of stable operation of working condition 3. When the unit works under the working condition 3 and is ready to enter the power generation working condition 4, a combined locking signal is firstly given to the locking type clutch 2 at the motor end, and the locking oil cylinder locking gear ring moves to finish clutch combined locking. After the combination locking is completed, the opening degree of the throttle of the steam turbine 5 is increased, the output power of the steam turbine is improved, and when the output power is greater than the load power, the motor 1 is changed from an electric state to a power generation state.
If the motor power generation state is adjusted to other working conditions from the working condition 4, the output power of the steam turbine 5 needs to be reduced firstly, so that the motor 1 is changed from the power generation state to the electric state, then a combined locking and unlocking signal is sent to the combined locking clutch 2 at the motor end, the combined locking and unlocking of the combined locking clutch 2 is completed, and the combined locking clutch 2 can be automatically combined and disengaged according to the rotating speeds of the two ends.
The operating condition 5 is a switching operating condition for switching from the operating condition 1 to the operating condition 2. When the system is driven by the motor 1 alone (working condition 1), power needs to be switched to be driven by the steam turbine 5 alone (working condition 2). At this time, the steam turbine 5 is started first, and the parallel operation of the steam turbine 5 and the motor 1 is completed (working condition 3). Then, the power output of the steam turbine 5 is slowly increased, the power output of the motor 1 is approximately zero, the motor 1 is stopped, at the moment, the combined locking clutch 2 at the motor end is disengaged, and the power is switched from the motor 1 to the steam turbine 5 (the working condition 1 is switched to the working condition 2).
The operating condition 6 is a switching operating condition for switching from the operating condition 2 to the operating condition 1. When the system is driven by the steam turbine 5 alone (working condition 2), power needs to be switched to be driven by the motor 1 alone (working condition 1). At this time, the motor 1 is started first, and the parallel operation of the steam turbine 5 and the motor 1 is completed (working condition 3). Then, the power output of the steam turbine 5 is slowly reduced, the steam turbine 5 stops when the power output of the steam turbine 5 is approximately zero, and at the moment, the release locking clutch 4 at the end of the steam turbine 5 is released, so that the power switching from the steam turbine 5 to the motor 1 is completed (the working condition 2 is switched to the working condition 1).
When the unit is ready to stop under the working condition 1 or the working condition 3 and performs barring under the working condition 7, a combined locking instruction needs to be given to the combined locking type clutch 2 at the motor end before the stop instruction starts, combined locking of the clutch is completed, and then the unit is decelerated and stopped. When the unit operates under the working condition 4, the motor end is kept to be combined with the locking type clutch 2 for locking, the working condition 4 is converted into the working condition 3, and the unit is stopped according to the stopping method of the working condition 3. When the unit operates in the working condition 2, the motor 1 is inching after the unit stops to enable the locking clutch 2 at the motor end to be combined, then a locking signal is combined to enable the locking clutch to be in a combined locking state, and then the unit is kept in a stopping state. When the unit is in complete rest under the conditions, the turning gear of the steam turbine is manually combined to put the turning gear into work, and the whole unit is turned.
When the barring under the working condition 8 needs to be carried out, the whole unit can be stopped under any working condition, the release locking type clutch 4 at the turbine end is released, locked and locked, so that the release locking type clutch 4 at the turbine end cannot be combined, then the barring is manually combined, and the barring is put into work to independently carry out long-time barring on the turbine 5. After the turning of the steam turbine is finished, an unlocking signal is given to the release locking type clutch 4 at the end of the steam turbine, so that the clutch is ready for the next unit operation.
In general, the working conditions commonly used by the unit are working condition 3 and working condition 4. When the unit operates under the working condition 3 or the working condition 4, if the steam turbine 5 breaks down, the unit can be directly stopped, the release locking type clutch 4 at the end of the steam turbine is released to operate, the motor 1 carries the load 3 to continue to operate, and the unit cannot be stopped due to the fault of the steam turbine 5.
When the unit operates under the working condition 3, if the motor 1 breaks down and needs emergency shutdown, the power of the steam turbine 5 needs to be increased firstly to meet the requirement of the load 3, then the motor 1 is shut down, and the motor end is disengaged from the locking clutch 2 to operate. At this moment, can overhaul motor 1, can not influence the unit operation.
When the unit operates under the working condition 4, if the motor 1 breaks down and needs to be stopped emergently, the power of the steam turbine 5 needs to be reduced firstly, the requirement of the load 3 is met, and the power generation state of the motor 1 is relieved. Then, the motor end is combined with the locking clutch 2 to give a combined locking and unlocking signal, so that the clutch can be freely combined and disengaged according to the rotating speeds of the two ends. Finally, the motor 1 is stopped, and the motor end is disengaged from the lock-up clutch 2. At the moment, the motor can be overhauled, and the operation of the unit cannot be influenced.
Claims (4)
1. A power switching method of a double-power driving unit is characterized by comprising the following steps: the double-power driving unit comprises a steam turbine, a disengagement locking type speed change clutch, a load, a combination locking type synchronous automatic clutch and a motor with a power generation function, which are sequentially connected;
(1) when the motor with the power generation function works with a load alone, the motor with the power generation function is started and combined with the locking clutch to be combined, the load is borne by the motor with the power generation function alone, the steam turbine is static, and the unlocking locking clutch is in an unlocking state;
(2) when the steam turbine works with load alone, the steam turbine starts the release locking type speed change clutch, the release locking type clutch is in a combined state, the load is completely borne by the steam turbine, and the motor with the power generation function is static;
(3) starting a steam turbine on the basis that a motor with a power generation function works alone with a load, releasing the locked synchronous automatic clutch from the end of the steam turbine to be combined after the combined rotating speed is reached, and keeping the combined state by combining the locked synchronous automatic clutch, wherein the load power is shared by the motor with the power generation function and the steam turbine;
(4) on the basis of the independent load-carrying work of the steam turbine, a motor with a power generation function is started, after the combined rotating speed is reached, the locked synchronous automatic clutch is combined, a release locked variable speed clutch at the end of the steam turbine keeps a combined state, and at the moment, the load power is jointly borne by the motor with the power generation function and the steam turbine;
(5) when the load power is shared by the motor with the power generation function and the steam turbine, a combined locking signal is firstly given to the combined locking type synchronous automatic clutch, a locking oil cylinder locking toothed ring moves to complete clutch combination locking, the opening degree of a regulating valve of the steam turbine is increased after the combination locking is completed, the output power of the steam turbine is improved, and when the output power is greater than the load power, the motor with the power generation function is changed from an electric state to a power generation state;
(6) when the motor with the power generation function is changed into the motor with the power generation function from the single load operation of the turbine, the turbine is started, the parallel operation of the turbine and the motor with the power generation function is completed, the power output of the turbine is increased, the power output of the motor with the power generation function approaches zero, the motor with the power generation function is stopped, the combined locking type synchronous automatic clutch at the motor end is disengaged, and the switching of the power from the motor with the power generation function to the turbine is completed;
(7) when the operation of the turbine with load alone is changed into the operation of the motor with power generation function with load alone, the motor with power generation function is started, the parallel operation of the turbine and the motor with power generation function is completed, then the power output of the turbine is reduced, the turbine is stopped when the power output of the turbine approaches zero, the release locking type variable speed clutch is released at the moment, and the switching of the power from the turbine to the motor with power generation function is completed;
(8) when a motor with a power generation function works with load alone or a steam turbine works with load alone and is ready to stop for turning a train, a combined locking instruction is given to the combined locking type synchronous automatic clutch before the stop instruction starts, combined locking is completed, and then the unit is decelerated and stopped; when the steam turbine works with load and is ready to stop for turning up the vehicle, the motor with the power generation function is inching after the steam turbine stops, the combined locking type synchronous automatic clutch is combined to be in a combined locking state, and then the stop state of the steam turbine is kept; when the steam turbine is in complete standstill, the turning gear is put into operation by manually combining the turning gear of the steam turbine.
2. The power switching method of the dual-power drive unit as claimed in claim 1, wherein: when the motor with the power generation function and the steam turbine run in parallel, if the motor with the power generation function breaks down and needs emergency shutdown, the power of the steam turbine is increased to meet the load requirement, then the motor with the power generation function is shut down, and the locked synchronous automatic clutch is combined to run away.
3. The power switching method of the dual-power drive unit as claimed in claim 1, wherein: when the motor with the power generation function and the steam turbine run in parallel and the steam turbine is turned into the single load-carrying work of the steam turbine, the opening of the steam turbine is increased, when the power output of the motor with the power generation function approaches zero, a motor power supply with the power generation function is closed, the motor power supply is disengaged by combining the locking type synchronous automatic clutch, and the disengagement locking type speed change clutch keeps the state unchanged.
4. The power switching method of the dual-power drive unit as claimed in claim 1, wherein: when the motor with the power generation function and the steam turbine run in parallel and the motor with the power generation function is converted into the single load-carrying work, the opening of the steam turbine is gradually reduced until the steam turbine is decelerated and stopped, the release locking type speed change clutch is released at the moment, and the state is kept unchanged by combining the locking type synchronous automatic clutch.
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| CN202210493734.2A CN114961885B (en) | 2022-05-07 | 2022-05-07 | Power switching method of double-power driving unit |
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| CN202210493734.2A CN114961885B (en) | 2022-05-07 | 2022-05-07 | Power switching method of double-power driving unit |
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| CN114961885B CN114961885B (en) | 2023-08-08 |
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