CN106593653B - Gas turbine axial direction draught control system, method and apparatus and gas turbine - Google Patents
Gas turbine axial direction draught control system, method and apparatus and gas turbine Download PDFInfo
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- CN106593653B CN106593653B CN201611179603.8A CN201611179603A CN106593653B CN 106593653 B CN106593653 B CN 106593653B CN 201611179603 A CN201611179603 A CN 201611179603A CN 106593653 B CN106593653 B CN 106593653B
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- electric control
- control valve
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- shaft
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/16—Control of working fluid flow
- F02C9/18—Control of working fluid flow by bleeding, bypassing or acting on variable working fluid interconnections between turbines or compressors or their stages
Abstract
The present invention relates to technical field of internal combustion engines, disclose a kind of gas turbine axial direction draught control system, method and apparatus and gas turbine, to realize automatic adjustment shaft axial force, improve property easy to adjust.Gas turbine axial direction draught control system includes：Shaft, compressor and turbine are fixedly arranged on shaft and deviate from the thrust disc of turbine side positioned at compressor, and the both sides of thrust disc are equipped with thrust bearing shoe valve, further include：The counter balance pocket being set between turbine and compressor, counter balance pocket are connected by gas-guide tube with the gas outlet of compressor, and gas-guide tube is equipped with the first electric control valve；First detection device, for detecting actual distance value of the thrust disc apart from its thrust bearing shoe valve away from compressor side；The controller being connect with the first electric control valve and the first detection device signal, controller is used for the difference according to the actual distance value that the first detection device detects and preset gauged distance value, adjusts the aperture of the first electric control valve until difference is located in default threshold.
Description
Technical field
The present invention relates to technical field of internal combustion engines, more particularly to a kind of gas turbine axial direction draught control system, method and dress
It puts and gas turbine.
Background technology
When gas turbine works, air-flow can generate axial force to compressor rotor and turbine rotor, their resultant force
Rotor can be made to generate axial movement, lead to gas engine inner rotation part and stationary part phase grazing, so as to cause failure, therefore
It must try to balance and offset the axial force suffered by rotor.No matter compressor or turbine, always the direction of axial force is from air-flow
High-pressure side be directed toward low-pressure end, the axial force direction suffered by compressor and turbine is exactly the opposite, two power can partly balance to
Disappear.For the gas turbine of a certain determining configuration, when it is when declared working condition works, axial resultant direction be it is fixed, i.e., it is suitable
Air current flow direction or inverse air current flow direction；And when start and stop and varying duty work, the direction of axial resultant force may be reversely.
The axial movement of rotor is generally constrained on present gas turbine using thrust bearing, passes through pushing away for thrust disc both sides
Power watt carrys out the axial force of airflow balancing.But when gas turbine is in the operation of high load capacity operating mode or other situations, required balance
Axial force has been more than the design load of thrust bearing shoe valve, then needs by increasing counter balance pocket come balancing axial thrust.
But counter balance pocket of the prior art can not realize automatic adjustment, and modulability is poor.
Invention content
The present invention provides a kind of gas turbine axial direction draught control system, method and apparatus and gas turbine, to reality
Shaft axial force is now automatically adjusted, property easy to adjust is improved, extends the service life of gas turbine.
In order to achieve the above objectives, the present invention provides following technical scheme：
The present invention provides a kind of gas turbine axial direction draught control system, including：Shaft, the pressure being installed in the shaft
Mechanism of qi and turbine are fixedly arranged on the shaft and deviate from the thrust disc of the turbine side, the thrust disc positioned at the compressor
Both sides be equipped with thrust bearing shoe valve, further include：
The counter balance pocket being set between the turbine and the compressor, the counter balance pocket are calmed the anger by gas-guide tube with described
The gas outlet connection of machine, and the gas-guide tube is equipped with the first electric control valve；
First detection device, for detecting reality of the thrust disc apart from its thrust bearing shoe valve away from the compressor side
Distance value；
The controller being connect with first electric control valve and the first detection device signal, the controller are used for
The difference of the actual distance value detected according to first detection device and preset gauged distance value adjusts described the
The aperture of one electric control valve is until the difference is located in default threshold；Wherein：
When the difference is less than the minimum value in the default threshold, increase first electric control valve aperture, with
Increase the active force along the first direction that the shaft is subject to；
When the difference is more than the maximum value in the default threshold, reduce first electric control valve aperture, with
Reduce the shaft by active force along the first direction, the first direction is the side that the turbine is directed toward by the compressor
To.
Gas turbine axial direction draught control system provided by the invention, can be with by the first detection device and controller of setting
In real time detection rotor axial stress whether balance, when out-of-balance, the pressure in counter balance pocket can be adjusted in time so that rotor by
It tries hard to keep and holds dynamic equilibrium, shaft is by making the power that shaft is moved close to one end of turbine to thrust disc direction still to separate
The power of thrust disc direction movement, the power can be balanced by the pressure that counter balance pocket provides so that thrust disc is carried on the back apart from it
The difference of the actual distance value of the thrust bearing shoe valve of tripping mechanism of qi side and preset gauged distance value is located in default threshold.
Therefore gas turbine axial direction draught control system provided by the invention, it can realize automatic adjustment shaft axial force, improve
Property easy to adjust extends the service life of gas turbine.
In some optional embodiments, above-mentioned gas turbine axial direction draught control system further includes and is set to described lead
2/2-way solenoid valve on tracheae and between the turbine and first electric control valve, wherein, described two two
First working hole of three-way electromagnetic valve is connected with the gas outlet of the compressor, and the second working hole and the opening of the counter balance pocket connect
It is logical, when the spool of the 2/2-way solenoid valve is located at the first working position, first working hole and second working hole
Connection；When the spool of the 2/2-way solenoid valve is located at the second working position, first working hole and the described second work
Mouth disconnects；
The controller is connect with the 2/2-way solenoid signal, and the controller is additionally operable to：
While the aperture for increasing first electric control valve, the 2/2-way solenoid valve is controlled to be in the first work
Make position；
While the aperture for reducing first electric control valve, the 2/2-way solenoid valve is controlled to be in the first work
Make position or the second working position.
In some optional embodiments, above-mentioned gas turbine axial direction draught control system further includes and is set to described lead
Two position four-way solenoid valves on tracheae and between the turbine and first electric control valve, wherein, described two four
First working hole of three-way electromagnetic valve is connected with the gas outlet of the compressor, and the second working hole and the air inlet of the counter balance pocket connect
Logical, the third working hole is connected with the ambient atmosphere, and the 4th working hole is connected with the gas outlet of the counter balance pocket, when
When the spool of two position four-way solenoid valve is located at the first working position, first working hole is connected with second working hole,
The third working hole is disconnected or is connected with the 4th working hole；When the spool of two position four-way solenoid valve is located at the second work
When making position, first working hole is disconnected with second working hole, and the third working hole is connected with the 4th working hole；
The controller is connect with the two position four-way solenoid valves signal, and the controller is additionally operable to：
While the aperture for increasing first electric control valve, two position four-way solenoid valve is controlled to be in the first work
Make position；
While the aperture for reducing first electric control valve, two position four-way solenoid valve is controlled to be in the first work
Position or the second working position.
In some optional embodiments, above-mentioned gas turbine axial direction draught control system further includes：
The pressure relief pipe that one end is connected with the counter balance pocket, the other end is connected with ambient atmosphere is set on the pressure relief pipe
There is the second electric control valve；
The controller is connect with the second motorized adjustment valve signal, and the controller is additionally operable to adjusting described first
While the aperture of electric control valve, the aperture of second electric control valve is adjusted.
In some optional embodiments, above-mentioned gas turbine axial direction draught control system further includes：
Second detection device, the second detection device is used to work under declared working condition in the gas turbine and institute
When stating axial force balance suffered by shaft, detection controls the actual current of the aperture of first electric control valve；
The controller is connect with the second detection device signal, the controller be additionally operable to when the actual current with
When the absolute value of the difference of pre-stored theoretical current value is more than preset value, alarm signal is generated；
The warning device being connect with the controller signals, the warning device is according to the alarm signal report received
It is alert.
In some optional embodiments, the shaft is set on the part between the turbine and the compressor
There is casing peace weighing apparatus disk, wherein the housing of the relatively described gas turbine of the casing is fixed, the relatively described shaft of the balancing frame
Fixed, the casing and the balancing frame surround the counter balance pocket, and by turning quiet close between the casing and the balancing frame
Seal structure seals.
In some optional embodiments, the static seal structure that turns includes：Castor toothing, honeycomb, brush knot
At least one of structure and graphite-structure structure.
In some optional embodiments, wheel disc and with the wheel disc adjacent institute of the counter balance pocket by the turbine
The nozzle stated in gas turbine surrounds.
The present invention also provides a kind of gas turbines, and system is adjusted including gas turbine axial force described in any one of the above embodiments
System.
The present invention also provides a kind of adjusting method applied to above-mentioned gas turbine axial direction draught control system, including：
Receive actual distance value of the thrust disc apart from its thrust bearing shoe valve away from the compressor side；
According to the difference of the actual distance value received and preset gauged distance value, first electric adjustable is adjusted
Save the aperture of valve, to balance the axial force suffered by the shaft；Wherein：
When the difference is less than the minimum value in the default threshold, increase first electric control valve aperture, with
Increase the active force along the first direction that the shaft is subject to；
When the difference is more than the maximum value in the default threshold, reduce first electric control valve aperture, with
Reduce the shaft by active force along the first direction, the first direction is the side that the turbine is directed toward by the compressor
To.
In some optional embodiments, above-mentioned adjusting method further includes：
When the gas turbine work under declared working condition and the shaft suffered by axial force balance when, receive control institute
State the actual current of the aperture of the first electric control valve；
When being more than preset value according to the actual current and the absolute value of the difference of pre-stored theoretical current value, generate
Alarm signal.
The present invention also provides a kind of regulating device applied to above-mentioned gas turbine axial direction draught control system, including：
First receiving module, for receiving reality of the thrust disc apart from its thrust bearing shoe valve away from the compressor side
Distance value；
First processing module, the actual distance value and the difference of preset gauged distance value received for basis,
Adjust the aperture of first electric control valve, to balance the axial force suffered by the shaft；Wherein：
When the difference is less than the minimum value in the default threshold, increase first electric control valve aperture, with
Increase the active force along the first direction that the shaft is subject to；
When the difference is more than the maximum value in the default threshold, reduce first electric control valve aperture, with
Reduce the shaft by active force along the first direction, the first direction is the side that the turbine is directed toward by the compressor
To.
In some optional embodiments, regulating device further includes：
Second receiving module, for work as the gas turbine work under declared working condition and the shaft suffered by axial force
During balance, the actual current for the aperture for controlling first electric control valve is received；
Second processing module, for the absolute value according to the actual current and the difference of pre-stored theoretical current value
During more than preset value, alarm signal is generated.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and forms the part of the present invention, this hair
Bright illustrative embodiments and their description do not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the first structure diagram of gas turbine axial direction draught control system provided in an embodiment of the present invention；
Fig. 2 is second of structure diagram of gas turbine axial direction draught control system provided in an embodiment of the present invention；
Fig. 3 is the third structure diagram of gas turbine axial direction draught control system provided in an embodiment of the present invention；
Fig. 4 is the 4th kind of structure diagram of gas turbine axial direction draught control system provided in an embodiment of the present invention；
Fig. 5 is the structure diagram of gas turbine axial direction apparatus for adjusting force provided in an embodiment of the present invention；
Fig. 6 is gas turbine axial force adjusting method flow chart provided in an embodiment of the present invention.
In figure：
1- shaft 2- compressors
3- turbine 4- thrust discs
5- thrust bearing shoe valve 6- counter balance pockets
61- balancing frame 62- casings
7- the first electric control valve 8- gas-guide tubes
9- the first detection device 10- controllers
Two position four-way solenoid valves of 11- 2/2-way solenoid valves 12-
13- the second electric control valve 14- pressure relief pipes
15- the first receiving module 16- Second processing modules
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.
Embodiment one
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 4, the present invention provides a kind of gas turbine axial direction draught control system, including：
Shaft 1, the compressor 2 and turbine 3 being installed in shaft 1 are fixedly arranged on shaft 1 and positioned at compressor 2 away from 3 side of turbine
Thrust disc 4, the both sides of thrust disc 4 are equipped with thrust bearing shoe valve 5, further include：
The counter balance pocket 6 being set between turbine 3 and compressor 2, the gas outlet that counter balance pocket 6 passes through gas-guide tube 8 and compressor 2
Connection, and gas-guide tube 8 is equipped with the first electric control valve 7；
First detection device 9, for detecting actual range of the thrust disc 4 apart from its thrust bearing shoe valve 5 away from 2 side of compressor
Value；
The controller 10 being connect with the first electric control valve 7 and 9 signal of the first detection device, controller 10 are used for according to the
The difference of the actual distance value that one detection device 9 detects and preset gauged distance value adjusts opening for the first electric control valve 7
Degree is until difference is located in default threshold；Wherein：
When difference is less than the minimum value in default threshold, increase the first electric control valve 7 aperture, with increase shaft 1 by
The active force along the first direction arrived；
When difference is more than the maximum value in default threshold, reduce the first electric control valve 7 aperture, with reduce shaft 1 by
The active force along the first direction arrived, first direction are the direction that turbine 3 is directed toward by compressor 2.
Gas turbine axial direction draught control system provided by the invention passes through the first detection device 9 and controller 10 of setting
It can detect whether rotor axial stress balances in real time, when out-of-balance, the pressure in counter balance pocket 6 can be adjusted in time so that
Rotor stress keeps dynamic equilibrium, and no matter shaft 1 is by the power that shaft 1 is made to be moved close to one end of turbine 3 to 4 direction of thrust disc
Or to the power far from the movement of 4 direction of thrust disc, which can be balanced by the pressure that counter balance pocket 6 provides so that be pushed away
The difference of actual distance value of the power disk 4 apart from its thrust bearing shoe valve 5 away from 2 side of compressor and preset gauged distance value is located at pre-
If in threshold.Therefore gas turbine axial direction draught control system provided by the invention, it can realize automatic adjustment 1 axial force of shaft, improve
Property easy to adjust extends the service life of gas turbine.
It should be noted that above-mentioned, counter balance pocket 6 has losing heart in a little allowance due to that can not possibly be fully sealed.
Above-mentioned setting threshold, preset gauged distance value those skilled in the art can set according to actual needs.
In a kind of optional embodiment, as shown in Figure 1, above-mentioned gas turbine axial direction draught control system, further includes setting
In the 2/2-way solenoid valve 11 on gas-guide tube 8 and between 3 and first electric control valve 7 of turbine, wherein, 2/2-way
First working hole of solenoid valve 11 is connected with the gas outlet of compressor 2, the second working hole and the open communication of counter balance pocket 6, when two
When the spool of two three-way electromagnetic valves 11 of position is located at the first working position, the first working hole is connected with the second working hole；When 2/2-way electricity
When the spool of magnet valve 11 is located at the second working position, the first working hole and the second working hole disconnect；
Controller 10 is connect with 11 signal of 2/2-way solenoid valve, and controller 10 is additionally operable to：
While the aperture for increasing the first electric control valve 7, control 2/2-way solenoid valve 11 is in the first working position；
While the aperture for reducing the first electric control valve 7, control 2/2-way solenoid valve 11 is in the first working position
Or second working position.
Above-mentioned regulating system, when shaft 1 is by the power that shaft 1 is made to be moved close to one end of turbine 3 to 4 direction of thrust disc
When, increase the aperture of the first electric control valve 7 so that 2/2-way solenoid valve 11 is in the first working position, in such counter balance pocket 6
High pressure gas will be poured, the pressure that balancing frame 61 is subject to will become larger, and then will push shaft 1 close to one end of turbine 3 to separate
4 direction of thrust disc move, until thrust disc 4 apart from its away from 2 side of compressor thrust bearing shoe valve 5 actual distance value with it is preset
The difference of gauged distance value is located in default threshold, when shaft 1 is by making shaft 1 be moved close to one end of turbine 3 to 4 direction of thrust disc
During dynamic power, the aperture for reducing the first electric control valve 7 causes 2/2-way solenoid valve 11 be in the second working position, in this way balance
High pressure gas will not increase in chamber 6, since counter balance pocket 6 can not possibly be fully sealed therefore can discharge some high pressure gas, balancing frame 61
The pressure being subject to will become smaller, and then shaft 1 will be caused to be moved close to one end of turbine 3 to close to 4 direction of thrust disc, until thrust
The difference of actual distance value of the disk 4 apart from its thrust bearing shoe valve 5 away from 2 side of compressor and preset gauged distance value is located at default
In threshold, it is ensured that shaft 1 is in dynamic balance state, reduces the damage of thrust bearing shoe valve 5 and shaft 1.
In another optional embodiment, as shown in Figures 2 and 3, above-mentioned gas turbine axial direction draught control system also wraps
Two position four-way solenoid valves 12 being set on gas-guide tube 8 and between 3 and first electric control valve 7 of turbine are included, wherein, two
First working hole of position four-way solenoid valve 12 is connected with the gas outlet of compressor 2, and the second working hole and the air inlet of counter balance pocket 6 connect
Logical, third working hole is connected with ambient atmosphere, and the 4th working hole is connected with the gas outlet of counter balance pocket 6, when two position four-way solenoid valves
When 12 spool is located at the first working position, the first working hole is connected with the second working hole, and third working hole and the 4th working hole break
It opens or connects；When the spool of two position four-way solenoid valves 12 is located at the second working position, the first working hole and the second working hole disconnect,
Third working hole and the connection of the 4th working hole；
Controller 10 is connect with two two four way solenoid valves, 11 signals, and controller 10 is additionally operable to：
While the aperture for increasing the first electric control valve 7, two position four-way solenoid valves 12 of control are in the first working position；
When reduce the first electric control valve 7 aperture while, control two position four-way solenoid valves 12 be in the first station or
Second working position.
Regulating system as shown in Figure 2, when shaft 1 by make shaft 1 close to one end of turbine 3 to 4 direction of thrust disc move
During dynamic power, increase the aperture of the first electric control valve 7 so that two position four-way solenoid valves 12 be in the first working position, put down in this way
High pressure gas will be poured in weighing apparatus chamber 6, the pressure that balancing frame 61 is subject to will become larger, and then will push shaft 1 close to one end of turbine 3
To far from 4 direction of thrust disc move, until thrust disc 4 apart from its away from 2 side of compressor thrust bearing shoe valve 5 actual distance value with
The difference of preset gauged distance value is located in default threshold, when shaft 1 is by making shaft 1 close to one end of turbine 3 to thrust disc 4
During the power of direction movement, a kind of method：The aperture for reducing the first electric control valve 7 causes two position four-way solenoid valves 11 to be in second
Working position, the gas outlet of counter balance pocket 6 are connected with ambient atmosphere, and high pressure gas will excrete out in such counter balance pocket 6, balancing frame 61
The pressure being subject to will become smaller, and then shaft 1 will be caused to be moved close to one end of turbine 3 to close to 4 direction of thrust disc, until thrust
The difference of actual distance value of the disk 4 apart from its thrust bearing shoe valve 5 away from 2 side of compressor and preset gauged distance value is located at default
In threshold, it is ensured that shaft 1 is in dynamic balance state, reduces the damage of thrust bearing shoe valve 5 and shaft 1；Another method：Reduce
The aperture of first electric control valve 7 causes two position four-way solenoid valves 11 to be in the first working position, since counter balance pocket 6 itself can let out one
A little gas, after turning 7 aperture of the first electric control valve down, the pressure that balancing frame 61 is subject to will become smaller, and then will be so that shaft 1 is close thoroughly
Flat 3 one end is moved to close to 4 direction of thrust disc, until reality of the thrust disc 4 apart from its thrust bearing shoe valve 5 away from 2 side of compressor
The difference of border distance value and preset gauged distance value is located in default threshold, it is ensured that shaft 1 is in dynamic balance state, subtracts
The damage of low thrust watt 5 and shaft 1.
Regulating system as shown in Figure 3, when shaft 1 by make shaft 1 close to one end of turbine 3 to 4 direction of thrust disc move
During dynamic power, increase the aperture of the first electric control valve 7 so that two position four-way solenoid valves 12 be in the first working position, put down in this way
High pressure gas will be poured, while can be discharged by the gas outlet in counter balance pocket 6, but discharge rate is much small at this time in weighing apparatus chamber 6
In air inflow, the pressure that balancing frame 61 is subject to will become larger, and then will push shaft 1 close to one end of turbine 3 to far from thrust disc 4
Direction is moved, until actual distance value of the thrust disc 4 apart from its thrust bearing shoe valve 5 away from 2 side of compressor and preset normal pitch
Difference from value is located in default threshold, when shaft 1 is by the power that shaft 1 is made to be moved close to one end of turbine 3 to 4 direction of thrust disc
When, a kind of method is：Reduce the aperture of the first electric control valve 7, two position four-way solenoid valves 12 are in the first working position so that flat
Air inflow in weighing apparatus chamber 6 is far smaller than gas output, and the pressure that balancing frame 61 is subject to will become smaller, and then will be so that shaft 1 is close thoroughly
Flat 3 one end is moved to close to 4 direction of thrust disc, until reality of the thrust disc 4 apart from its thrust bearing shoe valve 5 away from 2 side of compressor
The difference of border distance value and preset gauged distance value is located in default threshold；Another method：Reducing the first electric control valve 7
Aperture while so that 2/2-way solenoid valve 11 is in the second working position, and counter balance pocket 6 does not enter back into high pressure gas, balance
The gas outlet of chamber 6 is connected with ambient atmosphere, and high pressure gas will excrete out in such counter balance pocket 6, the pressure that balancing frame 61 is subject to
It will become smaller, and then shaft 1 will be caused to be moved close to one end of turbine 3 to close to 4 direction of thrust disc, until thrust disc 4 is apart from it
Difference away from actual distance value and the preset gauged distance value of the thrust bearing shoe valve 5 of 2 side of compressor is located in default threshold, can be with
Ensure that shaft 1 is in dynamic balance state, reduce the damage of thrust bearing shoe valve 5 and shaft 1.
In another optional embodiment, as shown in figure 4, above-mentioned gas turbine axial direction draught control system, further includes：
The pressure relief pipe 14 that one end is connected with counter balance pocket 6, the other end is connected with ambient atmosphere, pressure relief pipe 14 are equipped with the
Two electric control valves 13；
Controller 10 is connect with 13 signal of the second electric control valve, and controller 10 is additionally operable to adjusting the first electric control valve
While 7 aperture, the aperture of the second electric control valve 13 is adjusted.
Above-mentioned regulating system passes through the aperture for controlling the first electric control valve 7 and the second regulating valve so that when shaft 1 by
During the power that shaft 1 is made to be moved close to one end of turbine 3 to 4 direction of thrust disc, increase the aperture of the first electric control valve 7, reduce
The aperture of second electric control valve 13 so that the amount for entering high pressure gas in counter balance pocket 6 is far longer than the pressure relief pipe of counter balance pocket 6
The amount released in 14, the pressure that balancing frame 61 is subject to will become larger, and then shaft 1 will be pushed to be pushed away close to one end of turbine 3 to separate
4 direction of power disk is moved, until actual distance value of the thrust disc 4 apart from its thrust bearing shoe valve 5 away from 2 side of compressor and preset mark
The difference of quasi- distance value is located in default threshold, when shaft 1 is by making shaft 1 be moved close to one end of turbine 3 to 4 direction of thrust disc
Power when, the aperture for reducing the first electric control valve 7 increases the second aperture for being transferred to regulating valve simultaneously so that in counter balance pocket 6 into
The amount for entering high pressure gas is far smaller than the amount released in the pressure relief pipe 14 of counter balance pocket 6, and the pressure that balancing frame 61 is subject to will become smaller,
And then shaft 1 will be caused to be moved close to one end of turbine 3 to close to 4 direction of thrust disc, it calms the anger until thrust disc 4 deviates from apart from it
The difference of the actual distance value of the thrust bearing shoe valve 5 of 2 side of machine and preset gauged distance value is located in default threshold, it is ensured that shaft
1 is in dynamic balance state, reduces the damage of thrust bearing shoe valve 5 and shaft 1.
Gas turbine axial direction draught control system provided by the invention is not limited to above-mentioned some cited structures, or
Other structures, as long as can assist the first electric control valve 7 that the pressure in counter balance pocket 6 is adjusted, in addition preferably
In embodiment, the high pressure gas hypereccrisia poured in balancing frame 61 is reduced to the greatest extent, to reduce the loss of compressor 2.
Gas turbine axial direction draught control system provided by the invention is in order to preferably reduce the hair of 5 wear phenomenon of thrust bearing shoe valve
Raw, above-mentioned gas turbine axial direction draught control system further includes：
Second detection device, second detection device be used for gas turbine work under declared working condition and shaft 1 suffered by axis
During to dynamic balance, the actual current of the aperture of detection the first electric control valve 7 of control；
Controller 10 is connect with second detection device signal, and controller 10 is additionally operable to when actual current and pre-stored reason
When being more than preset value by the absolute value of the difference of current value, alarm signal is generated；
The warning device being connect with 10 signal of controller, warning device are alarmed according to the alarm signal received.
When 6 gas leakage of counter balance pocket is too many, i.e., the seal member abrasion of flat Horizontal Price Movement is more serious, can not play Balanceregulation
When, thrust bearing shoe valve 5 will come to harm, for this purpose, the application, by setting second detection device, second detection device is used in combustion gas
Turbine work under declared working condition and shaft 1 suffered by axial force balance when, the aperture of detection first electric control valve 7 of control
Actual current；Controller 10 is additionally operable to preset when the absolute value of actual current and the difference of pre-stored theoretical current value is more than
During value, alarm signal is generated, so that service personnel is reminded to overhaul gas turbine axial direction draught control system in time, reduction pushes away
The generation of 5 damage phenomenon of power watt.
The concrete structure of above-mentioned counter balance pocket 6 can there are many：
Optionally, part of the shaft 1 between turbine 3 and compressor 2 is equipped with casing 62 and balancing frame 61, wherein machine
Casket 62 is fixed with respect to the housing of gas turbine, and balancing frame 61 is fixed with respect to shaft 1, and casing 62 and balancing frame 61 surround counter balance pocket 6,
And it is sealed between casing 62 and balancing frame 61 by turning static seal structure.Such structure is convenient for convenient for design by counter balance pocket 6
Volume do it is larger, improve counter balance pocket 6 regulating power, while the design of this spline structure convenient for sealing.
The above-mentioned static seal structure that turns includes：At least one of castor toothing, honeycomb, brush gear and graphite-structure
Structure.
Optionally, counter balance pocket 6 is surrounded by the nozzle in the wheel disc of turbine 3 and the gas turbine adjacent with the wheel disc.
Embodiment two
The present invention also provides a kind of gas turbines, and system is adjusted including gas turbine axial force described in any one of the above embodiments
System.With good safety in utilization and longer service life.
Embodiment three
As shown in figure 5, the present invention also provides a kind of adjusting sides applied to above-mentioned gas turbine axial direction draught control system
Method, including：
Step S501：Receive actual distance value of the thrust disc 4 apart from its thrust bearing shoe valve 5 away from 2 side of compressor；
Step S502：According to the difference of the actual distance value received and preset gauged distance value, it is electronic to adjust first
The aperture of regulating valve 7, to balance the axial force suffered by shaft 1；Wherein：
When difference is less than the minimum value in default threshold, increase the first electric control valve 7 aperture, with increase shaft 1 by
The active force along the first direction arrived；
When difference is more than the maximum value in default threshold, reduce the first electric control valve 7 aperture, with reduce shaft 1 by
The active force along the first direction arrived, first direction are the direction that turbine 3 is directed toward by compressor 2.
Further, above-mentioned adjusting method, further includes：
When gas turbine work under declared working condition and shaft 1 suffered by axial force balance when, receive control the first electric adjustable
Save the actual current of the aperture of valve 7；
When being more than preset value according to actual current and the absolute value of the difference of pre-stored theoretical current value, alarm is generated
Signal.
Example IV
As shown in fig. 6, the present invention also provides a kind of adjusting dresses applied to above-mentioned gas turbine axial direction draught control system
It puts, including：
First receiving module 15, for receive thrust disc 4 apart from its thrust bearing shoe valve 5 away from 2 side of compressor it is practical away from
From value；
First processing module 16 for the difference according to the actual distance value received and preset gauged distance value, is adjusted
Save the aperture of the first electric control valve 7, to balance the axial force suffered by shaft 1；Wherein：
When difference is less than the minimum value in default threshold, increase the first electric control valve 7 aperture, with increase shaft 1 by
The active force along the first direction arrived；
When difference is more than the maximum value in default threshold, reduce the first electric control valve 7 aperture, with reduce shaft 1 by
The active force along the first direction arrived, first direction are the direction that turbine 3 is directed toward by compressor 2.
Further above-mentioned regulating device, further includes：
Second receiving module, for when gas turbine work under declared working condition and shaft 1 suffered by axial force balance when,
Receive the actual current of the aperture of the first electric control valve 7 of control；
Second processing module, for being more than according to actual current and the absolute value of the difference of pre-stored theoretical current value
During preset value, alarm signal is generated.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (12)
1. a kind of gas turbine axial direction draught control system, including：Shaft, the compressor and turbine being installed in the shaft, Gu
Deviate from the thrust disc of the turbine side set on the shaft and positioned at the compressor, the both sides of the thrust disc are equipped with
Thrust bearing shoe valve, which is characterized in that further include：
The counter balance pocket being set between the turbine and the compressor, the counter balance pocket pass through gas-guide tube and the compressor
Gas outlet connects, and the gas-guide tube is equipped with the first electric control valve；
First detection device, for detecting actual range of the thrust disc apart from its thrust bearing shoe valve away from the compressor side
Value；
The controller being connect with first electric control valve and the first detection device signal, the controller are used for basis
The difference of the actual distance value that first detection device detects and preset gauged distance value adjusts first electricity
The aperture of dynamic regulating valve is until the difference is located in default threshold；Wherein：
When the difference is less than the minimum value in the default threshold, increase the aperture of first electric control valve, with increase
The active force along the first direction that the shaft is subject to；
When the difference is more than the maximum value in the default threshold, reduce the aperture of first electric control valve, with reduction
For the shaft by active force along the first direction, the first direction is the direction that the turbine is directed toward by the compressor；
Wherein described counter balance pocket is surrounded by the nozzle in the wheel disc of the turbine and the gas turbine adjacent with the wheel disc.
2. gas turbine axial direction draught control system according to claim 1, which is characterized in that further include and be set to described lead
2/2-way solenoid valve on tracheae and between the turbine and first electric control valve, wherein, described two two
First working hole of three-way electromagnetic valve is connected with the gas outlet of the compressor, and the second working hole and the opening of the counter balance pocket connect
It is logical, when the spool of the 2/2-way solenoid valve is located at the first working position, first working hole and second working hole
Connection；When the spool of the 2/2-way solenoid valve is located at the second working position, first working hole and the described second work
Mouth disconnects；
The controller is connect with the 2/2-way solenoid signal, and the controller is additionally operable to：
While the aperture for increasing first electric control valve, the 2/2-way solenoid valve is controlled to be in the first work
Position；
While the aperture for reducing first electric control valve, the 2/2-way solenoid valve is controlled to be in the first working position
Or second working position.
3. gas turbine axial direction draught control system according to claim 1, which is characterized in that further include and be set to described lead
Two position four-way solenoid valves on tracheae and between the turbine and first electric control valve, wherein, described two four
First working hole of three-way electromagnetic valve is connected with the gas outlet of the compressor, and the second working hole and the air inlet of the counter balance pocket connect
Logical, third working hole is connected with ambient atmosphere, and the 4th working hole is connected with the gas outlet of the counter balance pocket, when two four-ways
When the spool of solenoid valve is located at the first working position, first working hole is connected with second working hole, the third work
Mouth is disconnected or is connected with the 4th working hole；It is described when the spool of two position four-way solenoid valve is located at the second working position
First working hole is disconnected with second working hole, and the third working hole is connected with the 4th working hole；
The controller is connect with the two position four-way solenoid valves signal, and the controller is additionally operable to：
While the aperture for increasing first electric control valve, two position four-way solenoid valve is controlled to be in the first work
Position；
While the aperture for reducing first electric control valve, control two position four-way solenoid valve be in the first station or
Second working position.
4. gas turbine axial direction draught control system according to claim 1, which is characterized in that further include：
The pressure relief pipe that one end is connected with the counter balance pocket, the other end is connected with ambient atmosphere, the pressure relief pipe are equipped with the
Two electric control valves；
The controller is connect with the second motorized adjustment valve signal, and the controller is additionally operable to electronic in adjusting described first
While the aperture of regulating valve, the aperture of second electric control valve is adjusted.
5. according to Claims 1 to 4 any one of them gas turbine axial direction draught control system, which is characterized in that further include：
Second detection device, the second detection device are used to work under declared working condition and described turn in the gas turbine
Suffered by axis during axial force balance, detection controls the actual current of the aperture of first electric control valve；
The controller is connect with the second detection device signal, the controller be additionally operable to when the actual current in advance
When the absolute value of the difference of the theoretical current value of storage is more than preset value, alarm signal is generated；
The warning device being connect with the controller signals, the warning device are alarmed according to the alarm signal received.
6. gas turbine axial direction draught control system according to claim 5, which is characterized in that the shaft is located at described
Part between the gentle compressor is equipped with casing and balancing frame, wherein the housing of the relatively described gas turbine of the casing
Fixed, the relatively described shaft of the balancing frame is fixed, and the casing and the balancing frame surround the counter balance pocket, and the casing
It is sealed between the balancing frame by turning static seal structure.
7. gas turbine axial direction draught control system according to claim 6, which is characterized in that described to turn static seal structure packet
It includes：At least one of castor toothing, honeycomb, brush gear and graphite-structure structure.
8. a kind of gas turbine, which is characterized in that including such as claim 1~7 any one of them gas turbine axial force tune
Section system.
9. a kind of adjusting method applied to gas turbine axial direction draught control system as described in claim 1, which is characterized in that
Including：
Receive actual distance value of the thrust disc apart from its thrust bearing shoe valve away from the compressor side；
According to the difference of the actual distance value received and preset gauged distance value, first electric control valve is adjusted
Aperture until the difference is located in default threshold；Wherein：
When the difference is less than the minimum value in the default threshold, increase the aperture of first electric control valve, with increase
The active force along the first direction that the shaft is subject to；
When the difference is more than the maximum value in the default threshold, reduce the aperture of first electric control valve, with reduction
For the shaft by active force along the first direction, the first direction is the direction that the turbine is directed toward by the compressor.
10. adjusting method according to claim 9, which is characterized in that further include：
When the gas turbine work under declared working condition and the shaft suffered by axial force balance when, receive control described the
The actual current of the aperture of one electric control valve；
When being more than preset value according to the actual current and the absolute value of the difference of pre-stored theoretical current value, alarm is generated
Signal.
11. a kind of regulating device applied to gas turbine axial direction draught control system as claimed in claim 10, feature exists
In, including：
First receiving module, for receiving actual range of the thrust disc apart from its thrust bearing shoe valve away from the compressor side
Value；
First processing module for the difference according to the actual distance value received and preset gauged distance value, is adjusted
The aperture of first electric control valve is until the difference is located in default threshold；Wherein：
When the difference is less than the minimum value in the default threshold, increase the aperture of first electric control valve, with increase
The active force along the first direction that the shaft is subject to；
When the difference is more than the maximum value in the default threshold, reduce the aperture of first electric control valve, with reduction
For the shaft by active force along the first direction, the first direction is the direction that the turbine is directed toward by the compressor.
12. regulating device according to claim 11, which is characterized in that further include：
Second receiving module, for work as the gas turbine work under declared working condition and the shaft suffered by axial force balance
When, reception controls the actual current of the aperture of first electric control valve；
Second processing module, for being more than according to the actual current and the absolute value of the difference of pre-stored theoretical current value
During preset value, alarm signal is generated.
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| CN201611179603.8A CN106593653B (en) | 2016-12-19 | 2016-12-19 | Gas turbine axial direction draught control system, method and apparatus and gas turbine |
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| CN201611179603.8A CN106593653B (en) | 2016-12-19 | 2016-12-19 | Gas turbine axial direction draught control system, method and apparatus and gas turbine |
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| CN108252961A (en) * | 2017-12-28 | 2018-07-06 | 中国航发四川燃气涡轮研究院 | A kind of axial thrust balancing devices for axial flow compressor performance test |
| CN110552746A (en) * | 2018-06-01 | 2019-12-10 | 至玥腾风科技投资集团有限公司 | Rotor system and gas turbine generator set |
| CN110118106A (en) * | 2019-04-18 | 2019-08-13 | 华电电力科学研究院有限公司 | A kind of distributed top pressure power generation system and working method based on efficient radial turbines |
| CN111255528B (en) * | 2020-01-22 | 2022-03-04 | 天津大学 | Balancing device for axial force of kilowatt-level supercritical carbon dioxide turbine |
| CN112555026B (en) * | 2020-11-18 | 2023-12-26 | 靳新中 | Multi-thrust disk gas turbine for balancing axial forces |
| CN112283142B (en) * | 2020-12-24 | 2023-04-07 | 中国航发上海商用航空发动机制造有限责任公司 | Gas compressor testing device, sealing device and manufacturing method thereof |
| CN114483664A (en) * | 2021-12-31 | 2022-05-13 | 北京动力机械研究所 | External hanging type axial force balance shafting structure |
| CN114876854B (en) * | 2022-06-14 | 2024-03-01 | 沈阳透平机械股份有限公司 | Axial thrust control method and device for centrifugal compressor and storage medium |
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| GB0103298D0 (en) * | 2001-02-09 | 2001-03-28 | Corac Group Plc | Improvements in and relating to thrust bearing load control |
| CN104727950B (en) * | 2015-02-10 | 2019-10-01 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | A kind of gas turbine axial direction force control device and its control method |
| CN205503283U (en) * | 2016-01-29 | 2016-08-24 | 西门子公司 | Gas turbine and gas turbine thrust bearing system |
| CN106014649B (en) * | 2016-07-13 | 2018-04-17 | 上海电气燃气轮机有限公司 | Gas turbine axial direction draught control system |
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Address after: 201306 101 new office building, A, 7 new industrial park, Shanghai, Pudong New Area, 600 new Yuan South Road, Pudong New Area. Applicant after: New Austrian energy power technology (Shanghai) Co., Ltd. Address before: 201406 228 yongyang Road, Yang Wang Industrial Park, South Bridge Town, Fengxian District, Shanghai Applicant before: Shanghai wisdom energy equipment Co., Ltd. |
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