CN110108927A - A kind of gas turbine switching value feedback malfunction elimination method - Google Patents
A kind of gas turbine switching value feedback malfunction elimination method Download PDFInfo
- Publication number
- CN110108927A CN110108927A CN201910307821.2A CN201910307821A CN110108927A CN 110108927 A CN110108927 A CN 110108927A CN 201910307821 A CN201910307821 A CN 201910307821A CN 110108927 A CN110108927 A CN 110108927A
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- China
- Prior art keywords
- switching value
- feedback signal
- value feedback
- control system
- route
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Safety Devices In Control Systems (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The invention discloses a kind of gas turbine switching values to feed back malfunction elimination method, pass through the method for segmentation investigation, to determine the fault point of switching value feedback failure, this method can quickly and effectively check switching value feedback failure, be of great significance to gas turbine safe operation.
Description
Technical field
The invention belongs to technical field of gas turbine more particularly to a kind of gas turbine switching value to feed back malfunction elimination side
Method.
Background technique
Gas turbine as a kind of high-speed rotating machine, need lubricating oil lubricate, cooling bearing, if lubricating oil pressure it is too low will
The scaling loss for causing bearing shell has important safety influence to combustion engine ontology;If fuel inlet hypotony will cause the abrasion of fuel pump
And the failures such as combustion chamber is flame-out, combustion pulsation.Gas turbine uses switching value feedback system often to judge that gas turbine is each
Whether pressure value is normal, whether actuator position is correct.In gas turbine actual moving process, often occur because switching value is anti-
Feedback measurement failure causes the operation troubles such as gas turbine drop operating condition, shutdown.
Summary of the invention
The purpose of the present invention is to provide a kind of gas turbine switching values to feed back malfunction elimination method.
The purpose of the present invention is what is be implemented with the following technical solutions: a kind of gas turbine switching value feedback malfunction elimination side
Method, which comprises the following steps:
Whether step 1 checks whether switching value feedback loop power supply is normal, required with multimeter measurement supply voltage
In range, if abnormal, power supply should be checked, be replaced;
Step 2 pulls out switching value feedback signal device institute connection signal plug, uses cable if step 1 checks that power supply is normal
Short circuit connects the Signal plug, and control system monitoring panel shows that the switching value feedback signal is 0, it is anti-can to exclude switching value at this time
The failure of feedback signal device;If control system monitoring panel shows that the switching value feedback signal is 1, switching value feedback letter can determine whether
Number device failure answers switch amount feedback signal device to replace;
Step 3 connects wiring with cable short circuit if step 2 inspection eliminates the failure of switching value feedback signal device
Interconnecting device connecting terminal can exclude wiring at this time and turn if control system monitoring panel shows that the switching value feedback signal remains as 0
Connect the failure of route between box and switching value feedback signal device;If control system monitoring panel shows the switching value feedback signal and is
1, then it can determine whether that route exists abnormal between wiring switching box and switching value feedback signal device, copes at this section of connection plug
Check and circuit on-off situation is checked that replaceable route is disposed and verifies;
Step 4, if step 3 judges that route is without exception between wiring switching box and switching value feedback signal device, can determine whether
There may be failures for route or control system switch amount feedback collection board between wiring switching box and control system.Answer butted line
Route carries out continuity check between interconnecting device and control system, if checking, route is without exception, answers switch amount feedback collection board
It opens and inspect, replace verifying.
The invention discloses a kind of gas turbine switching values to feed back malfunction elimination method, the method checked by segmentation, with
Determine the fault point of switching value feedback failure, this method can quickly and effectively check switching value feedback failure, to gas turbine safety
Operation is of great significance.
Detailed description of the invention
Fig. 1 is gas turbine switching value feedback operation schematic diagram.
Specific embodiment
As shown in Figure 1, the invention discloses a kind of gas turbine switching values to feed back malfunction elimination method, when gas turbine control
When system acquisition switching value processed occurs abnormal, following check should be carried out:
Step 1 checks whether switching value ring current ± 24V DC voltage is normal, is with multimeter measurement loop voltage
It is no in claimed range, if measurement result is abnormal, power supply should be checked, be replaced.
Step 2 pulls out switching value feedback signal device institute connection signal plug if step 1 checks that ring current is normal, uses
Cable short circuit connects two connecting terminal of the Signal plug A1, A2, and control system monitoring panel shows that the switching value feedback signal is
0, the failure of switching value feedback signal device can be excluded at this time;If control system monitoring panel shows that the switching value feedback signal is 1,
It then can determine whether switching value feedback signal device failure, switch amount feedback signal device answered to replace.
Step 3 connects wiring with cable short circuit if step 2 inspection eliminates the failure of switching value feedback signal device
Interconnecting device C1, C2 connecting terminal can exclude at this time if control system monitoring panel shows that the switching value feedback signal remains as 0
The failure of route between wiring switching box and switching value feedback signal device;If control system monitoring panel shows that the switching value is fed back
Signal is 1, then can determine whether that route exists abnormal between wiring switching box and switching value feedback signal device, copes with this section of connection
It carries out checking at plug and circuit on-off situation is checked that replaceable route is disposed and verifies.
Step 4, if step 3 judges that route is without exception between wiring switching box and switching value feedback signal device, can determine whether
There may be failures for route or control system switch amount feedback collection board between wiring switching box and control system.Answer butted line
Route carries out continuity check between interconnecting device and control system, if checking, route is without exception, answers switch amount feedback collection board
It opens and inspect, replace verifying.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (1)
1. a kind of gas turbine switching value feeds back malfunction elimination method, which comprises the following steps:
Whether step 1 checks whether switching value feedback loop power supply is normal, with multimeter measurement supply voltage in claimed range
It is interior, if abnormal, power supply should be checked, be replaced;
Step 2 pulls out switching value feedback signal device institute connection signal plug if step 1 checks that power supply is normal, with cable short circuit
The Signal plug is connected, control system monitoring panel shows that the switching value feedback signal is 0, can exclude switching value feedback letter at this time
The failure of number device;If control system monitoring panel shows that the switching value feedback signal is 1, switching value feedback signal device can determine whether
Failure answers switch amount feedback signal device to replace;
Step 3, if step 2 inspection eliminates the failure of switching value feedback signal device, with cable short circuit connection wiring switching
Box connecting terminal can exclude wiring switching box if control system monitoring panel shows that the switching value feedback signal remains as 0 at this time
The failure of route between switching value feedback signal device;If control system monitoring panel shows that the switching value feedback signal is 1,
It can determine whether that route exists abnormal between wiring switching box and switching value feedback signal device, should carry out at this section of connection plug
It checks and circuit on-off situation is checked that replaceable route is disposed and verifies;
Step 4, if step 3 judges that route is without exception between wiring switching box and switching value feedback signal device, can determine whether wiring
There may be failures for route or control system switch amount feedback collection board between interconnecting device and control system.Butted line is answered to transfer
Route carries out continuity check between box and control system, if checking, route is without exception, switch amount feedback collection board is answered to open and inspect,
Replacement verifying.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201910307821.2A CN110108927B (en) | 2019-04-17 | 2019-04-17 | Method for troubleshooting switching value feedback fault of gas turbine |
Applications Claiming Priority (1)
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CN201910307821.2A CN110108927B (en) | 2019-04-17 | 2019-04-17 | Method for troubleshooting switching value feedback fault of gas turbine |
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CN110108927A true CN110108927A (en) | 2019-08-09 |
CN110108927B CN110108927B (en) | 2021-10-15 |
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