CN117027967A - Method and system for controlling engine seal pressure - Google Patents
Method and system for controlling engine seal pressure Download PDFInfo
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- CN117027967A CN117027967A CN202311170822.XA CN202311170822A CN117027967A CN 117027967 A CN117027967 A CN 117027967A CN 202311170822 A CN202311170822 A CN 202311170822A CN 117027967 A CN117027967 A CN 117027967A
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- shaft seal
- seal pressure
- signal
- steam inlet
- pid controller
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000009471 action Effects 0.000 claims abstract description 17
- 238000004590 computer program Methods 0.000 claims description 13
- 230000001276 controlling effect Effects 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
- F01D11/04—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type using sealing fluid, e.g. steam
- F01D11/06—Control thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The application relates to the field of automatic control of motor sets, and provides a method and a system for controlling the sealing pressure of a motor shaft, wherein the method comprises the following steps: inputting a state signal of a turbine shaft seal into a shaft seal pressure control loop, wherein the state signal comprises an FCB action signal and a turbine load signal; the shaft seal pressure control loop judges and outputs an opening instruction to respectively control the opening of the shaft seal steam inlet valve and the opening of the shaft seal overflow valve so as to control the shaft seal pressure; if the shaft seal pressure control loop receives the FCB action signal, switching to a first preset opening instruction, and if not, performing the next step; the shaft seal pressure control loop monitors and judges whether the load signal of the steam turbine is out of the high limit and the low limit, if yes, the control loop is switched to a second preset opening instruction; the application can rapidly switch the on-off control of the shaft seal overflow valve and the shaft seal steam inlet valve under the state of high load, low load or FCB action.
Description
Technical Field
The application relates to the field of automatic control of motor sets, in particular to a method and a system for controlling the sealing pressure of a motor shaft.
Background
In the working process of the steam turbine unit, when the unit runs under low load, the steam pressure in the steam turbine cylinder is low, and external air can cool the steam turbine through the clearance cylinder of the rotating shaft of the steam turbine, so that the rotor of the steam turbine is deformed, therefore, the opening of a shaft seal steam inlet valve is required to be adjusted, the shaft seal pressure is improved, and the external air is prevented from entering the steam turbine; when the unit operates under high load, steam in the steam turbine cylinder is emitted outwards to fill the gap of the shaft seal, so that the opening degree of the overflow valve of the shaft seal is required to be adjusted to reduce the pressure of the shaft seal, after FCB action occurs, the steam turbine is instantaneously reduced to low load or 0 load from high load, the proper shaft seal of the steam turbine is required to be maintained, the pressure regulation of the shaft seal is required to be quickly switched from overflow regulation to steam inlet regulation,
the existing shaft seal pressure control method and system are designed and put into operation only according to the normal operation mode of the unit, under the condition of high load or low load, the shaft seal pressure control needs a long time to switch from the shaft seal overflow valve switch control to the shaft seal steam inlet valve switch control, the actual shaft seal pressure can be reduced to be very low or even lower than 0kPa, the shaft seal of a steam turbine is easy to be damaged, the safety of the steam turbine is influenced, the rapid switching function of the shaft seal steam inlet valve and the shaft seal overflow valve is not set when the unit FCB acts, after the unit FCB acts, the shaft seal pressure recovery time is long, even the shaft seal pressure cannot be recovered, and the safe operation of the unit is influenced.
Disclosure of Invention
The application solves the problem of how to rapidly switch the on-off control of the shaft seal overflow valve and the shaft seal steam inlet valve under the state of high load, low load or FCB action.
The application provides a method and a system for controlling the sealing pressure of a motor, comprising the following steps:
inputting a state signal of a turbine shaft seal into a shaft seal pressure control loop, wherein the state signal comprises an FCB action signal and a turbine load signal;
the shaft seal pressure control loop judges and outputs an opening instruction according to the state signal so as to respectively control the opening of the shaft seal steam inlet valve and the shaft seal overflow valve and further control the shaft seal pressure;
if the shaft seal pressure control loop receives the FCB action signal, switching to a first preset opening instruction, rapidly closing the shaft seal overflow valve, rapidly opening the shaft seal steam inlet valve to a preset value X3, and if not, performing the next step;
and the shaft seal pressure control loop monitors and judges whether the load signal of the steam turbine is out of the high limit and the low limit, if so, the control loop is switched to a second preset opening instruction, and the shaft seal steam inlet valve and the shaft seal overflow valve are switched to carry out single opening adjustment.
Optionally, the shaft seal pressure control loop comprises a steam inlet PID controller and an overflow PID controller.
Optionally, the monitoring of the shaft seal pressure control loop to determine whether the turbine load signal is outside the high and low limits includes:
presetting a low limit X1 of a turbine load parameter and a high limit X2 of the turbine load parameter;
the shaft seal pressure control loop monitors and judges whether the received turbine load signal is lower than X1 or higher than X2.
Optionally, the monitoring and judging of the shaft seal pressure control loop further includes:
and if not, the shaft seal steam inlet valve and the shaft seal overflow valve jointly perform opening degree adjustment.
Optionally, the method comprises:
the state signal also comprises a shaft seal pressure signal, and the shaft seal pressure control loop compares the shaft seal pressure signal with preset shaft seal pressure parameters after receiving the shaft seal pressure signal so as to output an opening instruction regulated and controlled by the shaft seal steam inlet valve and the shaft seal overflow valve together.
Optionally, the first preset opening instruction is to switch the output upper limit value of the overflow PID controller to 0% and switch the output lower limit value of the steam inlet PID controller to a preset value X3.
Optionally, the second preset opening instruction is:
if the turbine load signal is lower than the lower limit X1 of the preset turbine load parameter; switching the upper limit value of the output of the steam inlet PID controller to 100%, and switching the upper limit value of the output of the overflow PID controller to 0%;
and if the steam turbine load signal is higher than the upper limit X2 of the preset steam turbine load parameter, switching the output upper limit value of the steam inlet PID controller to 0%, and switching the output upper limit value of the overflow PID controller to 100%.
Compared with the prior art, the application receives the state signal by the shaft seal pressure control loop and judges, when receiving the FCB action signal, outputs a first preset opening instruction, so that the shaft seal overflow valve can be quickly switched to be fully closed, the shaft seal steam inlet valve is opened to a preset value X3, the quick decline of the shaft seal pressure can be restrained, and the preset value X3 is set to be a value with the minimum fluctuation amplitude of the shaft seal pressure after FCB action through FCB experiments; when the shaft seal pressure control loop judges that the load of the steam turbine is lower than the bottom limit or higher than the high limit according to the load signal of the steam turbine, the shaft seal pressure control loop rapidly realizes the full-closed shaft seal overflow valve by rapidly switching to a second preset opening instruction, the shaft seal pressure is independently controlled by the shaft seal inlet valve or the full-closed shaft seal inlet valve, and the shaft seal pressure is independently controlled by the shaft seal overflow valve.
The application also provides a steam turbine seal pressure system, which comprises a sensor group for detecting the state signal, a steam inlet PID controller, an overflow PID controller, a shaft seal steam inlet valve and a shaft seal overflow valve, and is used for implementing the steam turbine seal pressure control method.
Because the turbine seal pressure system is used for implementing the turbine seal pressure control method, the turbine seal pressure system has at least the beneficial effects of the turbine seal pressure control method, and will not be described in detail herein.
The application also provides a computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method as described above when executing the computer program.
Because the computer device is used for implementing the steps of the engine seal pressure control method, the computer device has at least the beneficial effects of the engine seal pressure control method, and will not be described in detail herein.
The application also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor implements the steps of the method as described above.
Because the computer readable storage medium is used for implementing the steps of the method for controlling the engine seal pressure, the computer readable storage medium has at least the beneficial effects of the method for controlling the engine seal pressure, and will not be described in detail herein.
Drawings
FIG. 1 is a schematic diagram of a method for controlling engine seal pressure according to an embodiment of the present application;
FIG. 2 is a flow chart of a method of controlling engine seal pressure in accordance with an embodiment of the present application;
FIG. 3 is a flow chart of a method for controlling engine seal pressure in accordance with an embodiment of the present application.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
It is noted that the terms "first," "second," and the like in the description and claims of the application and in the foregoing figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.
In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
In the description of the present specification, the descriptions of the terms "embodiment," "one embodiment," and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or embodiment is included in at least one embodiment or illustrated embodiment of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same examples or implementations. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or implementations.
The present application will be described in detail with reference to the accompanying drawings.
In order to solve the above technical problems, referring to fig. 1, an embodiment of the present application provides a method for controlling a shaft seal pressure of a turbine, including:
step S1, a step S1; inputting a state signal of a turbine shaft seal into a shaft seal pressure control loop, wherein the state signal comprises an FCB action signal and a turbine load signal;
s2, a step of S2; the shaft seal pressure control loop judges and outputs an opening instruction according to the state signal so as to respectively control the opening of the shaft seal steam inlet valve and the shaft seal overflow valve and further control the shaft seal pressure;
s3, a step of S3; if the shaft seal pressure control loop receives the FCB action signal, switching to a first preset opening instruction, rapidly closing the shaft seal overflow valve, rapidly opening the shaft seal steam inlet valve to a preset value X3, and if not, performing the next step;
s4, a step of S4; and the shaft seal pressure control loop monitors and judges whether the load signal of the steam turbine is out of the high limit and the low limit, if so, the control loop is switched to a second preset opening instruction, and the shaft seal steam inlet valve and the shaft seal overflow valve are switched to carry out single opening adjustment.
The shaft seal pressure control loop receives the state signal and then judges, when receiving the FCB action signal, a first preset opening command is output, so that the shaft seal overflow valve can be quickly switched to be fully closed, the shaft seal steam inlet valve is opened to a preset value X3, the quick decline of the shaft seal pressure can be restrained, and the preset value X3 is set through FCB experiments, so that the fluctuation range of the shaft seal pressure is as small as possible after the FCB action; when the shaft seal pressure control loop judges that the load of the steam turbine is lower than the bottom limit or higher than the high limit according to the load signal of the steam turbine, the shaft seal pressure control loop rapidly realizes the full-closed shaft seal overflow valve by rapidly switching to a second preset opening instruction, the shaft seal pressure is independently controlled by the shaft seal inlet valve or the full-closed shaft seal inlet valve, and the shaft seal pressure is independently controlled by the shaft seal overflow valve.
In one embodiment of the application, as shown in connection with FIG. 2, the shaft seal pressure control loop includes an inlet PID controller and an overflow PID controller.
It should be noted that, the air inlet PID controller and the overflow PID controller can compare the input status signal with the preset status signal reference value, and then output the relative shaft seal steam inlet valve opening instruction and shaft seal overflow valve opening instruction, so as to directly control the shaft seal steam inlet valve opening and shaft seal overflow valve opening respectively, further control the shaft seal pressure, and form an adjusting circulation loop to automatically perform feedback adjustment.
In one embodiment of the application, the shaft seal pressure control loop monitoring to determine whether the turbine load signal is outside of a high and low limit comprises:
presetting a low limit X1 of a turbine load parameter and a high limit X2 of the turbine load parameter;
the shaft seal pressure control loop monitors and judges whether the received turbine load signal is lower than X1 or higher than X2.
It should be noted that, in the low limit X1 of the preset turbine load parameter and the high limit X2 of the turbine load parameter, the selected low limit X1 and high limit X2 are values that enable the shaft seal steam inlet valve and the shaft seal overflow valve to be opened simultaneously as short as possible in the running process of the unit, but do not cause frequent switching of the shaft seal steam inlet valve and the shaft seal overflow valve, the air inlet PID controller and the overflow PID controller receive the turbine load signal and then compare and judge with the set low limit X1 and high limit X2, if the air inlet PID controller is lower than the low limit X1, the air inlet PID controller is in a low load state, and if the air inlet PID controller is higher than the bottom line X2, the air inlet PID controller is in a high load state, so that the switching of a second preset opening command of the relative load state is facilitated.
In one embodiment of the present application, the shaft seal pressure control loop monitoring and determining whether the turbine load signal is outside the high and low limits further comprises:
and if not, the shaft seal steam inlet valve and the shaft seal overflow valve jointly perform opening degree adjustment.
If the air inlet PID controller and the overflow PID controller receive the turbine load signal and then compare the turbine load signal with the set low limit X1 and the set high limit X2, and determine that the turbine load signal is between the low limit X1 and the high limit X2, the shaft seal steam inlet valve or the shaft seal overflow valve is not required to be fully opened or fully closed for rapid switching, and only the shaft seal steam inlet valve and the shaft seal overflow valve are required to be jointly opened for adjusting.
In one embodiment of the present application, it comprises:
the state signal also comprises a shaft seal pressure signal, and the shaft seal pressure control loop compares the shaft seal pressure signal with preset shaft seal pressure parameters after receiving the shaft seal pressure signal so as to output an opening instruction regulated and controlled by the shaft seal steam inlet valve and the shaft seal overflow valve together.
It should be noted that, the state signal still includes the shaft seal pressure signal, only needs to carry out the shaft seal steam inlet valve with the common aperture of shaft seal overflow valve is adjusted, admit air PID controller with overflow PID controller will receive the shaft seal pressure signal and the normal operating condition of preset unit shaft seal pressure parameter is judged in comparison, and the feedback aperture instruction controls the shaft seal steam inlet valve with the shaft seal overflow valve can reach corresponding preset shaft seal pressure parameter after making its aperture adjust.
In one embodiment of the present application, as shown in fig. 2, the first preset opening command is to switch the output upper limit value of the overflow PID controller to 0% and switch the output lower limit value of the steam inlet PID controller to a preset value X3.
The opening degree of the shaft seal steam inlet valve and the opening degree of the shaft seal overflow valve can be regulated and controlled only in the upper limit value and the lower limit value of the output of the overflow PID controller and the input steam PID controller, so that when the shaft seal steam inlet valve is in FCB action, the shaft seal steam inlet valve is switched to a first preset opening degree instruction, the upper limit value of the output of the overflow PID controller is switched to 0%, the lower limit value of the output of the input steam PID controller is switched to a preset value X3, after the FCB action, the shaft seal overflow valve can be quickly closed, and the shaft seal steam inlet valve can be quickly opened to the preset value X3, so that the quick decline of the shaft seal pressure can be quickly and stably restrained.
In one embodiment of the present application, the second preset opening command includes:
if the turbine load signal is lower than the lower limit X1 of the preset turbine load parameter; switching the upper limit value of the output of the steam inlet PID controller to 100%, and switching the upper limit value of the output of the overflow PID controller to 0%;
and if the steam turbine load signal is higher than the upper limit X2 of the preset steam turbine load parameter, switching the output upper limit value of the steam inlet PID controller to 0%, and switching the output upper limit value of the overflow PID controller to 100%.
If the load signal of the steam turbine is lower than the lower limit X1 of the preset load parameter of the steam turbine, at this time, in a low load state, the opening of the shaft seal steam inlet valve is required to be adjusted, the shaft seal pressure is required to be increased, at this time, the second preset opening instruction is to switch the output upper limit value of the steam inlet PID controller to 0%, switch the output upper limit value of the overflow PID controller to 100%, after the shaft seal steam inlet valve and the shaft seal overflow valve are switched to the second preset opening instruction, the shaft seal steam inlet valve can be quickly closed, the shaft seal overflow valve is fully opened, and only the shaft seal overflow valve is used for overflow single adjustment, so that steam is quickly discharged;
if the load signal of the steam turbine is higher than the lower limit X2 of the preset load parameter of the steam turbine, the load signal is in a high load state, the opening of the shaft seal overflow valve is required to be adjusted, the shaft seal pressure is reduced, at the moment, the second preset opening instruction is to switch the upper limit of the output of the steam inlet PID controller to 100%, the upper limit of the output of the overflow PID controller to 0%, after the shaft seal steam inlet valve and the shaft seal overflow valve are switched to the second preset opening instruction, the shaft seal steam inlet valve can be quickly fully opened, the shaft seal overflow valve is closed, and only the shaft seal steam inlet valve is used for single adjustment, so that steam is quickly carried out.
In addition, two embodiments of the lower limit X1, the upper limit X2, and the preset value X3 are provided;
and a 9E natural gas unit with a capacity of 180MW is finally determined that the time for adjusting the shaft seal pressure by simultaneously opening the shaft seal steam inlet valve and the shaft seal overflow valve is less than 30min, wherein the time is defined that the X1 = 25MW and the X2 = 35 MW; determining x3=60% minimizes shaft seal pressure fluctuations after FCB operation.
And a 9E natural gas unit with a capacity of 120MW finally determines that the time for adjusting the shaft seal pressure by simultaneously opening the shaft seal steam inlet valve and the shaft seal overflow valve is less than 20min, wherein the X1 = 50MW and the X2 = 65 MW; determining x3=50% minimizes shaft seal pressure fluctuations after FCB operation.
The embodiment of the application also provides a steam turbine seal pressure system, which comprises a sensor group for detecting the state signal, a steam inlet PID controller, an overflow PID controller, a shaft seal steam inlet valve and a shaft seal overflow valve, and is used for implementing the steam turbine seal pressure control method.
The sensor group collects and inputs the state information, and the steam inlet PID controller and the overflow PID controller receive the state information and perform state judgment, so as to output corresponding opening instructions to respectively control the opening of the shaft seal steam inlet valve and the opening of the shaft seal overflow valve, and further control the shaft seal pressure.
Further embodiments of the application provide a computer device comprising a memory storing a computer program and a processor implementing the steps of the method as described above when the computer program is executed.
Further inventive embodiments also provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method as described above.
It should be noted that, it will be understood by those skilled in the art that all or part of the procedures in implementing the methods of the embodiments described above may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a non-volatile computer readable storage medium, and the computer program may include the procedures of the embodiments of the methods described above when executed. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like.
The above-described features are continuously combined with each other to form various embodiments not listed above, and are regarded as the scope of the present application described in the specification; and, it will be apparent to those skilled in the art from this disclosure that modifications and variations can be made without departing from the scope of the application defined in the appended claims.
Claims (10)
1. A method of controlling the seal pressure of a motor, comprising:
inputting a state signal of a turbine shaft seal into a shaft seal pressure control loop, wherein the state signal comprises an FCB action signal and a turbine load signal;
the shaft seal pressure control loop judges and outputs an opening instruction according to the state signal so as to respectively control the opening of the shaft seal steam inlet valve and the shaft seal overflow valve and further control the shaft seal pressure;
if the shaft seal pressure control loop receives the FCB action signal, switching to a first preset opening instruction, rapidly closing the shaft seal overflow valve, rapidly opening the shaft seal steam inlet valve to a preset value X3, and if not, performing the next step;
and the shaft seal pressure control loop monitors and judges whether the load signal of the steam turbine is out of the high limit and the low limit, if so, the control loop is switched to a second preset opening instruction, and the shaft seal steam inlet valve and the shaft seal overflow valve are switched to carry out single opening adjustment.
2. The method of claim 1 wherein the shaft seal pressure control circuit includes an inlet PID controller and an overflow PID controller.
3. The method of claim 2, wherein the shaft seal pressure control loop monitoring to determine whether the turbine load signal is outside of a high and low limit comprises:
presetting a low limit X1 of a turbine load parameter and a high limit X2 of the turbine load parameter;
the shaft seal pressure control loop monitors and judges whether the received turbine load signal is lower than X1 or higher than X2.
4. The method of claim 3 wherein said shaft seal pressure control circuit monitoring and determining if said turbine load signal is outside of a high and low limit further comprises:
and if not, the shaft seal steam inlet valve and the shaft seal overflow valve jointly perform opening degree adjustment.
5. The method of controlling the seal pressure of a motor as set forth in claim 4, including:
the state signal also comprises a shaft seal pressure signal, and the shaft seal pressure control loop compares the shaft seal pressure signal with preset shaft seal pressure parameters after receiving the shaft seal pressure signal so as to output an opening instruction regulated and controlled by the shaft seal steam inlet valve and the shaft seal overflow valve together.
6. The method according to claim 2, wherein the first preset opening command is to switch an output upper limit value of the overflow PID controller to 0% and an output lower limit value of the intake PID controller to a preset value X3.
7. The method of claim 3, wherein the second preset opening command includes:
if the turbine load signal is lower than the lower limit X1 of the preset turbine load parameter; switching the upper limit value of the output of the steam inlet PID controller to 100%, and switching the upper limit value of the output of the overflow PID controller to 0%;
and if the steam turbine load signal is higher than the upper limit X2 of the preset steam turbine load parameter, switching the output upper limit value of the steam inlet PID controller to 0%, and switching the output upper limit value of the overflow PID controller to 100%.
8. A turbine seal pressure system comprising a sensor set for detecting said status signals and a steam inlet PID controller, an overflow PID controller, a shaft seal steam inlet valve and a shaft seal overflow valve for implementing a turbine seal pressure control method according to any of claims 1-7.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1-7 when the computer program is executed.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311170822.XA CN117027967A (en) | 2023-09-11 | 2023-09-11 | Method and system for controlling engine seal pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311170822.XA CN117027967A (en) | 2023-09-11 | 2023-09-11 | Method and system for controlling engine seal pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117027967A true CN117027967A (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311170822.XA Pending CN117027967A (en) | 2023-09-11 | 2023-09-11 | Method and system for controlling engine seal pressure |
Country Status (1)
| Country | Link |
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| CN (1) | CN117027967A (en) |
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- 2023-09-11 CN CN202311170822.XA patent/CN117027967A/en active Pending
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