CN115127824A - Power turbine rotating speed control troubleshooting method of marine gas turbine - Google Patents

Power turbine rotating speed control troubleshooting method of marine gas turbine Download PDF

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Publication number
CN115127824A
CN115127824A CN202210814295.0A CN202210814295A CN115127824A CN 115127824 A CN115127824 A CN 115127824A CN 202210814295 A CN202210814295 A CN 202210814295A CN 115127824 A CN115127824 A CN 115127824A
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power turbine
speed
stop
rotating speed
determining
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CN202210814295.0A
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魏昌淼
曹春荣
邹振宇
俞健
唐祖定
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703th Research Institute of CSIC Wuxi Branch
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703th Research Institute of CSIC Wuxi Branch
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/14—Testing gas-turbine engines or jet-propulsion engines
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Turbines (AREA)

Abstract

The application discloses a method for troubleshooting the rotating speed control fault of a power turbine of a marine gas turbine, which relates to the field of marine gas turbines, and is characterized in that a measuring channel for controlling the rotating speed of the power turbine is determined to be in fault as long as the output shaft of the power turbine is detected to be in brake fault; when the power turbine is determined to be shut down due to overspeed fault, a targeted troubleshooting method is indicated based on the rotating speed of the power turbine of the control machine and the rotating speed of the power turbine of the monitoring machine according to the specific phenomenon of the rotating speed control fault of the power turbine.

Description

Power turbine rotating speed control troubleshooting method of marine gas turbine
Technical Field
The application relates to the field of marine gas turbines, in particular to a power turbine rotating speed control troubleshooting method of a marine gas turbine.
Background
The gas turbine is a power output device, the marine gas turbine adopts a power turbine to output kinetic energy, and the free end of the power turbine is connected with a gear box. The gas turbine often has power turbine rotational speed control trouble in the operation process, and the reason that probably causes power turbine rotational speed control trouble is many, often hardly carries out effective quick investigation restoration at present, causes great hidden danger to the steady operation of gas turbine on the one hand, on the other hand because can not resume gas turbine operation as soon as possible, consequently influences gas turbine's work efficiency.
Disclosure of Invention
In view of the above problems and technical needs, the present applicant proposes a power turbine speed control troubleshooting method for a marine gas turbine, and the technical solution of the present application is as follows:
a method of troubleshooting power turbine speed control for a marine gas turbine, the method comprising:
determining the rotating speed N of the power turbine of the control machine when the output shaft of the power turbine has brake failure during the operation of the marine gas turbine 3c The measurement channel of (2) is faulty;
when the power turbine is shut down due to overspeed fault, the rotating speed N of the power turbine is determined if the fault occurs 3 <N 3_check According to the control machine power turbine speed N 3c Monitoring the rotating speed N of the power turbine 3m And a stop speed N 3_stop Determining a corresponding troubleshooting result according to the rotating speed relationship; speed N of power turbine in case of failure 3 ≥N 3_check Checking the check signal of the overspeed limiter of the power turbine, and according to the check result of the check signal of the overspeed limiter of the power turbine and the rotating speed N of the power turbine of the control machine 3c Monitoring the rotating speed N of the power turbine 3m And a stop speed N 3_stop Determining a corresponding troubleshooting result according to the rotating speed relationship; wherein N is 3_check Is a rotational speed check value.
The further technical scheme is that when N is N 3 <N 3_check Meanwhile, the method for determining the corresponding troubleshooting result comprises the following steps:
when monitoring the power turbine speed N 3m And controlling the machine power turbine speed N 3c When the rotation speeds are inconsistent, according to the stop rotation speed N 3_stop Determining faulty power turbine rotorA fast acquisition channel;
when monitoring the power turbine rotating speed N 3m And controlling the machine power turbine speed N 3c When consistent, according to the stop rotating speed N 3_stop Determining power turbine overspeed limiter failure or power turbine speed N 3 There is an overspeed fault.
The further technical proposal is that the engine is stopped according to the stop rotating speed N 3_stop An acquisition channel for determining a failed power turbine speed, comprising:
when N is present 3c ≥N 3_stop And N is 3m Determining the rotating speed N of the power turbine of the controlling machine when in the corresponding working range 3c The acquisition channel of (2) has a fault;
when N is present 3m ≥N 3_stop And N is 3c Determining the rotating speed N of the power turbine of the monitoring machine in the corresponding working range 3m The acquisition channel of (2) is out of order.
The further technical scheme is that when the rotating speed N of the power turbine is monitored 3m And controlling the machine power turbine speed N 3c When the two are consistent:
if N is present 3c <N 3_stop 、N 3m <N 3_stop Determining that the power turbine overspeed limiter fails;
if N is present 3c ≥N 3_stop 、N 3m ≥N 3_stop Determining the power turbine speed N 3 There is an overspeed fault.
The further technical scheme is that when N is N 3 ≥N 3_check Meanwhile, the method for determining the corresponding troubleshooting result comprises the following steps:
if the inspection result of the inspection signal of the overspeed limiter of the power turbine indicates that the inspection signal of the overspeed limiter of the power turbine is in a normal state, the rotating speed N of the power turbine is monitored 3m Controlling the rotation speed N of the power turbine of the machine 3c And a stop speed N 3_stop Determining a failed pick-up channel of the power turbine speed or determining the power turbine speed N 3 An overspeed fault exists;
if the inspection result of the inspection signal of the overspeed limiter of the power turbine indicates the power turbineIf the wheel overspeed limiter checks that the signal is in an abnormal state, the rotating speed N of the turbine is monitored according to the power of the monitoring machine 3m Controlling the rotation speed N of the power turbine of the machine 3c And a stop speed N 3_stop Determining that the power turbine overspeed limiter is malfunctioning.
The further technical scheme is that when the power turbine overspeed limiter check signal is in a normal state:
if the power turbine rotating speed N is monitored 3m And controlling the machine power turbine speed N 3c If the difference is not consistent, the rotation speed is determined according to the stop rotation speed N 3_stop Determining a collecting channel of the rotating speed of the power turbine with faults;
if the power turbine speed N is monitored 3m And controlling the machine power turbine speed N 3c Are identical, and N 3c ≥N 3_stop 、N 3m ≥N 3_stop Determining the power turbine speed N 3 There is an overspeed fault.
The further technical proposal is that according to the stop rotating speed N 3_stop An acquisition channel for determining a failed power turbine speed, comprising:
if N is present 3c ≥N 3_stop And N is 3m Within the corresponding rotating speed range, the rotating speed N of the power turbine of the control machine is determined 3c The measurement channel of (2) is faulty;
if N is present 3m ≥N 3_stop And N is 3c In the corresponding rotating speed range, determining the rotating speed N of the power turbine of the monitor 3m Fails.
The further technical scheme is that when the check signal of the overspeed limiter of the power turbine is in an abnormal state:
if the power turbine rotating speed N is monitored 3m And controlling the machine power turbine speed N 3c Are identical, and N 3c <N 3_stop 、N 3m <N 3_stop Then the power turbine overspeed limiter is determined to be faulty.
The beneficial technical effect of this application is:
the application discloses a method for troubleshooting the rotating speed control fault of a power turbine of a marine gas turbine, which is practical, can efficiently troubleshoot the rotating speed control fault of the power turbine of the gas turbine and has important significance for recovering the stable operation of the gas turbine.
Drawings
FIG. 1 shows the troubleshooting results of various parameters of a marine gas turbine according to an embodiment of the present invention when a power turbine speed control failure occurs.
Detailed Description
The following description of the embodiments of the present application will be made with reference to the accompanying drawings.
The application discloses a method for troubleshooting power turbine speed control of a marine gas turbine, please refer to the flowchart shown in fig. 1
When the output shaft of the power turbine has brake failure during the operation of the marine gas turbine, the rotating speed N of the power turbine of the control machine is directly determined 3c Should be checked for a fault in the measurement channel controlling the speed N of the power turbine of the machine 3c Including a corresponding rotational speed sensor.
During the operation of the marine gas turbine, when the power turbine is in overspeed fault shutdown, the rotating speed N of the power turbine is determined according to the rotating speed N of the power turbine when the fault occurs 3 The sizes of (A) are divided into two types:
1. speed N of power turbine in case of failure 3 <N 3_check According to the control machine power turbine speed N 3c Monitoring the rotating speed N of the power turbine 3m And a stop rotational speed N 3_stop The corresponding troubleshooting result is determined according to the rotating speed. N is a radical of 3_check Is a rotational speed check value. The method for determining the corresponding troubleshooting result comprises the following steps:
when monitoring the power turbine speed N 3m And controlling the machine power turbine speed N 3c When the rotation speed is inconsistent, the rotation speed is stopped according to the stop rotation speed N 3_stop And determining the acquisition channel of the rotating speed of the power turbine with the fault. Specifically, the method comprises the following steps:
(11) when N is present 3c ≥N 3_stop And N is 3m Determining the rotating speed N of the power turbine of the controlling machine when in the corresponding working range 3c Should be checked for a fault in the collection channel of the control machine 3c The acquisition channel comprises a corresponding rotating speed sensor.
(1.2) when N is present 3m ≥N 3_stop And N is 3c Determining the rotating speed N of the power turbine of the monitoring machine in the corresponding working range 3m Should monitor the power turbine speed N when the collection channel fails 3m The acquisition channel comprises a corresponding rotating speed sensor.
When monitoring the power turbine rotating speed N 3m And controlling the machine power turbine speed N 3c When consistent, according to the stop rotating speed N 3_stop Determining power turbine overspeed limiter failure or power turbine speed N 3 There is an overspeed fault. Specifically, the method comprises the following steps:
(1.3) if N 3c <N 3_stop 、N 3m <N 3_stop And determining that the power turbine overspeed limiter has a fault, and checking the power turbine overspeed limiter and a rotating speed acquisition channel thereof, including a corresponding rotating speed sensor.
(1.4) if N 3c ≥N 3_stop 、N 3m ≥N 3_stop Determining power turbine speed N 3 In the presence of actual overspeed faults, mechanical facilities such as controllable pitch propellers and the like need to be checked.
2. Speed N of power turbine in case of failure 3 ≥N 3_check Firstly checking the checking signal of the overspeed limiter of the power turbine, and according to the checking result of the checking signal of the overspeed limiter of the power turbine and the rotating speed N of the power turbine of the control machine 3c Monitoring the rotating speed N of the power turbine 3m And a stop speed N 3_stop The corresponding troubleshooting result is determined according to the rotating speed.
If the inspection result of the inspection signal of the overspeed limiter of the power turbine indicates that the inspection signal of the overspeed limiter of the power turbine is in a normal state, the rotating speed N of the power turbine is monitored 3m Controlling the machine power turbine speed N 3c And a stop speed N 3_stop Determining a failed pick-up channel of the power turbine speed or determining the power turbine speed N 3 There is an overspeed fault. Specifically, the method comprises the following steps:
if the power turbine rotating speed N is monitored 3m And controlling the machine power turbine speed N 3c If the difference is not consistent, the rotation speed is determined according to the stop rotation speed N 3_stop Determining the acquisition channel of the rotating speed of the power turbine with faults:
(2.1) if N 3c ≥N 3_stop And N is 3m Within the corresponding rotating speed range, the rotating speed N of the power turbine of the control machine is determined 3c The measurement channel of (2) is faulty.
(2.2) if N 3m ≥N 3_stop And N is 3c In the corresponding rotating speed range, the rotating speed N of the power turbine of the monitoring machine is determined 3m The measurement channel of (2) is faulty.
(2.3) monitoring the power turbine rotating speed N if monitoring 3m And controlling the machine power turbine speed N 3c Are identical, and N 3c ≥N 3_stop 、N 3m ≥N 3_stop Determining the power turbine speed N 3 There is an overspeed fault.
If the inspection result of the inspection signal of the overspeed limiter of the power turbine indicates that the inspection signal of the overspeed limiter of the power turbine is in an abnormal state, the rotating speed N of the power turbine is monitored 3m Controlling the rotation speed N of the power turbine of the machine 3c And a stop speed N 3_stop Determining that the power turbine overspeed limiter is malfunctioning.
(2.4) if the power turbine rotating speed N is monitored 3m And controlling the machine power turbine speed N 3c Are identical, and N 3c <N 3_stop 、N 3m <N 3_stop Then the power turbine overspeed limiter is determined to be faulty.
In one example, after a certain gas turbine is started successfully, in the process of running an empty vehicle, if the brake failure of the output shaft of the power turbine suddenly occurs, the rotating speed N of the power turbine of the control machine is directly checked 3c Finding out the rotating speed N of the power turbine of the controlling machine through checking 3c And the corresponding rotating speed sensor and the signal circuit are loosened, and after fastening, the fault is eliminated. In this example, by observationControlling the monitoring section and determining the rotating speed N of the power turbine of the monitoring machine at the moment 3m Is 1800r/min (revolutions per minute) and is stable, within the empirical operating range. And controlling the rotation speed N of the power turbine of the machine 3c The wave motion is in the interval of 1800 r/min-200 r/min, and the abnormity is really existed.
In another example, after a gas turbine has been operating for 20 hours continuously, the turbine is shutdown at 90% rated condition burst power turbine overspeed. Rotational speed check value N 3_check 2000r/min, power turbine speed N when fault occurs under 90% rated working condition of gas turbine 3 >N 3_check . The historical data at the time of the fault is first queried to investigate the power turbine overspeed limiter check signal and determine that the power turbine overspeed limiter check signal is in a normal state. At the same time due to N 3c ＝N 3m 3802r/min and a stop speed N 3_stop 3800r/min, because of N 3c ≥N 3_stop 、N 3m ≥N 3_stop Determining the power turbine speed N 3 There is an overspeed fault. The investigation finds that the hydraulic oil of the controllable pitch propeller is abnormal, so that the pitch of the propeller is reduced, and the rotating speed N of the fixed power turbine is caused 3 And after overspeed and fault removal, the gas turbine recovers stable operation.
What has been described above is only a preferred embodiment of the present application, and the present application is not limited to the above examples. It is to be understood that other modifications and variations directly derived or suggested to those skilled in the art without departing from the spirit and concepts of the present application are to be considered as included within the scope of the present application.

Claims (8)

1. A power turbine speed control troubleshooting method for a marine gas turbine engine, the method comprising:
determining the rotating speed N of the power turbine of the control machine when the output shaft of the power turbine has brake failure during the operation of the marine gas turbine 3c The measurement channel of (2) is faulty;
when the power turbine is shut down due to overspeed fault, the rotating speed N of the power turbine is determined if the fault occurs 3 <N 3_check Then according to the control machine power turbine rotating speed N 3c Monitoring the rotating speed N of the power turbine 3m And a stop rotational speed N 3_stop Determining a corresponding troubleshooting result according to the rotating speed relationship; speed N of power turbine in case of failure 3 ≥N 3_check Checking the check signal of the overspeed limiter of the power turbine, and according to the check result of the check signal of the overspeed limiter of the power turbine and the rotating speed N of the power turbine of the control machine 3c Monitoring the rotating speed N of the power turbine 3m And a stop speed N 3_stop Determining a corresponding troubleshooting result according to the rotating speed relationship; wherein N is 3_check Is a rotational speed check value.
2. The method of claim 1, wherein when N is 3 <N 3_check Meanwhile, the method for determining the corresponding troubleshooting result comprises the following steps:
when monitoring the power turbine rotating speed N 3m And controlling the machine power turbine speed N 3c When the rotation speed is inconsistent, the rotation speed is stopped according to the stop rotation speed N 3_stop Determining a collecting channel of the rotating speed of the power turbine with faults;
when monitoring the power turbine rotating speed N 3m And controlling the machine power turbine speed N 3c When consistent, according to the stop rotating speed N 3_stop Determining power turbine overspeed limiter failure or power turbine speed N 3 There is an overspeed fault.
3. Method according to claim 2, characterised in that said stopping speed N is dependent on 3_stop An acquisition channel for determining a failed power turbine speed, comprising:
when N is present 3c ≥N 3_stop And N is 3m Determining the rotating speed N of the power turbine of the controlling machine when in the corresponding working range 3c The acquisition channel of (2) has a fault;
when N is present 3m ≥N 3_stop And N is 3c Determining the rotating speed N of the power turbine of the monitoring machine in the corresponding working range 3m The acquisition channel(s) of (2) is (are) malfunctioning.
4. The method of claim 2, wherein power turbine speed N is monitored while monitoring power turbine speed 3m And controlling the machine power turbine speed N 3c When the two are consistent:
if N is present 3c <N 3_stop 、N 3m <N 3_stop Determining that the power turbine overspeed limiter fails;
if N is present 3c ≥N 3_stop 、N 3m ≥N 3_stop Determining power turbine speed N 3 There is an overspeed fault.
5. The method of claim 1, wherein when N is 3 ≥N 3_check Meanwhile, the method for determining the corresponding troubleshooting result comprises the following steps:
if the inspection result of the inspection signal of the overspeed limiter of the power turbine indicates that the inspection signal of the overspeed limiter of the power turbine is in a normal state, the rotating speed N of the power turbine is monitored 3m Controlling the rotation speed N of the power turbine of the machine 3c And a stop speed N 3_stop Determining a failed pick-up channel of the power turbine speed or determining the power turbine speed N 3 An overspeed fault exists;
if the checking result of the checking signal of the overspeed limiter of the power turbine indicates that the checking signal of the overspeed limiter of the power turbine is in an abnormal state, the rotating speed N of the power turbine is monitored 3m Controlling the machine power turbine speed N 3c And a stop speed N 3_stop Determining that the power turbine overspeed limiter is malfunctioning.
6. The method of claim 5, wherein when the power turbine overspeed limiter check signal is in a normal state:
if the power turbine rotating speed N is monitored 3m And controlling the machine power turbine speed N 3c If the difference is not consistent, the rotating speed is stopped according to the stop rotating speed N 3_stop Determining a collecting channel of the rotating speed of the power turbine with faults;
if the power turbine speed N is monitored 3m And controlling the mechanical power vortexWheel speed N 3c Are identical, and N 3c ≥N 3_stop 、N 3m ≥N 3_stop Determining the power turbine speed N 3 There is an overspeed fault.
7. Method according to claim 6, characterised in that said stopping rotational speed N is dependent on 3_stop An acquisition channel for determining a failed power turbine speed, comprising:
if N is present 3c ≥N 3_stop And N is 3m Within the corresponding rotating speed range, the rotating speed N of the power turbine of the control machine is determined 3c The measurement channel of (2) is faulty;
if N is present 3m ≥N 3_stop And N is 3c In the corresponding rotating speed range, determining the rotating speed N of the power turbine of the monitor 3m Fails.
8. The method of claim 5, wherein when the power turbine overspeed limiter check signal is in an abnormal state:
if the power turbine rotating speed N is monitored 3m And controlling the machine power turbine speed N 3c Are identical, and N 3c <N 3_stop 、N 3m <N 3_stop Then the power turbine overspeed limiter is determined to be malfunctioning.
CN202210814295.0A 2022-07-11 2022-07-11 Power turbine rotating speed control troubleshooting method of marine gas turbine Pending CN115127824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210814295.0A CN115127824A (en) 2022-07-11 2022-07-11 Power turbine rotating speed control troubleshooting method of marine gas turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210814295.0A CN115127824A (en) 2022-07-11 2022-07-11 Power turbine rotating speed control troubleshooting method of marine gas turbine

Publications (1)

Publication Number Publication Date
CN115127824A true CN115127824A (en) 2022-09-30

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