CN107120195A - gas turbine closed hydraulic starting system - Google Patents
gas turbine closed hydraulic starting system Download PDFInfo
- Publication number
- CN107120195A CN107120195A CN201710523770.8A CN201710523770A CN107120195A CN 107120195 A CN107120195 A CN 107120195A CN 201710523770 A CN201710523770 A CN 201710523770A CN 107120195 A CN107120195 A CN 107120195A
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- China
- Prior art keywords
- gas turbine
- rotating speed
- hydraulic pump
- volume adjustable
- speed
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Classifications
-
- 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
- F02C7/26—Starting; Ignition
- F02C7/268—Starting drives for the rotor, acting directly on the rotor of the gas turbine to be started
- F02C7/27—Fluid drives
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
Abstract
The invention discloses a kind of gas turbine Closed Hydraulic starting system, it includes starter, volume adjustable hydraulic pump, constant displacement hydraulic motor；The output of starter is connected with volume adjustable hydraulic pump, for driving variable delivery hydraulic pump work；The repairing mouthful of volume adjustable hydraulic pump is connected with starting oil sources；The oil-out of volume adjustable hydraulic pump connects the oil inlet of constant displacement hydraulic motor by pipeline；The oil inlet of volume adjustable hydraulic pump connects the oil-out of constant displacement hydraulic motor by pipeline；The output shaft of constant displacement hydraulic motor is connected with gas turbine gear-box.The gas turbine Closed Hydraulic starting system of the present invention, cranking performance rating is high, and pipeline is simple, and fault rate is low, and reliability is high.
Description
Technical field
The present invention relates to gas turbine starting technique, more particularly to a kind of gas turbine Closed Hydraulic starting system.
Background technology
Heat energy is converted to machinery by the gas that gas turbine (Gas Turbine) is a kind of continuously to flow as working medium
The rotary power machinery of work(.In air and the main flow of combustion gas, only compressor (Compressor), combustion chamber
(Combustor) and combustion gas turbine (Turbine) this three big parts composition gas turbine cycle, be commonly referred to as simple cycle.Greatly
Most gas turbines use simple cycle scheme.Because its structure is most simple, and it is special to best embody out gas turbine institute
Some small volumes, lightweight, starting are fast, few with or without series of advantages such as cooling waters.
The course of work of gas turbine is that compressor (i.e. compressor) continuously sucks air from air, and passes through axle
Streaming compressor compresses step by step to be allowed to be pressurized, while air themperature is also accordingly improved；Air after compression is pressed to combustion chamber
Fuel mixed combustion with penetrating generates the gas of HTHP, and expansion work in combustion gas turbine is flowed into immediately, promotes turbine leaf
Wheel rotates together with compressor impeller, and the waste gas discharged from turbine drains into the natural heat release of air, realizes gas or liquid
The chemical energy of fuel is partially converted into mechanical work, and exports electric work；The acting ability of high-temperature fuel gas after heating is significantly improved, because
And combustion gas turbine still has output mechanical work of the complementary work as gas turbine while compressor is driven.
Gas turbine is a kind of widely used power set, itself does not possess self-starting function, it is necessary to be equipped with auxiliary
Dynamical system, makes its compressor reach certain rotating speed, and then gas turbine is just disengaged with accessory power system, by itself combustion gas
Burning could maintain its own to operate
Existing gas turbine starting system has electric motor starting, hydraulic open system starting etc..Wherein hydraulic open system
There are problems that cranking performance rating is relatively low, pipeline is complicated, fault rate.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of gas turbine Closed Hydraulic starting system, cranking performance rating is high,
Pipeline is simple, and fault rate is low, and reliability is high.
In order to solve the above technical problems, the gas turbine Closed Hydraulic starting system that the present invention is provided, it includes starter
1st, volume adjustable hydraulic pump 2, constant displacement hydraulic motor 3；
The output of the starter 1 is connected with the volume adjustable hydraulic pump 2, for driving the volume adjustable hydraulic pump 2 to work；
The volume adjustable hydraulic pump 2 has oil inlet 21, oil-out 22 and repairing mouth 23；
The repairing mouthful 23 of the volume adjustable hydraulic pump 2 is connected with starting oil sources 5；
The oil-out 22 of the volume adjustable hydraulic pump 2 connects the oil inlet of constant displacement hydraulic motor 3 by pipeline；
The oil inlet 21 of the volume adjustable hydraulic pump 2 connects the oil-out of constant displacement hydraulic motor 3 by pipeline；
The output shaft of the constant displacement hydraulic motor 3 is connected with gas turbine gear-box 4.
Preferably, the starter 1 is motor or engine.
Preferably, gas turbine Closed Hydraulic starting system also includes speed probe 6, control circuit 7；
The speed probe 6, for detecting the real-time rotating speed of gas turbine；
The control circuit 7, turns in real time according to the gas turbine that the rotating speed of target of setting and the speed probe 6 feed back
Speed, controls the discharge capacity of the volume adjustable hydraulic pump 2；When the starter 1 is started working and the real-time rotating speed of gas turbine is less than the
One rotating speed of target, controls the discharge capacity increase of the volume adjustable hydraulic pump 2；When gas turbine detection rotating speed reach first object rotating speed,
The gas turbine igniting is controlled to start.
Preferably, the control circuit 7, when the real-time rotating speed of gas turbine reaches the second rotating speed of target, controls described start
Machine 1 is stopped, and the second rotating speed of target is higher than first object rotating speed.
Preferably, first object rotating speed is 10% to the 20% of gas turbine maximum speed；
Second rotating speed of target is 40% to the 60% of gas turbine maximum speed.
Preferably, first object rotating speed is the 15% of gas turbine maximum speed；
Second rotating speed of target is the 50% of gas turbine maximum speed.
Preferably, it is described control circuit 7, when the starter start working and the real-time rotating speed of gas turbine be less than first
Rotating speed of target, controls the discharge capacity of the volume adjustable hydraulic pump 2 to increase with First Speed；When the real-time rotating speed of gas turbine reaches the first mesh
Rotating speed is marked, controls the gas turbine igniting to start, and controls the discharge capacity of the volume adjustable hydraulic pump 2 to increase with second speed, the
Two speed are higher than First Speed, and the rotating speed growth rate of the output shaft of hydraulic motor 3 is more than gas turbine own combustion makes combustion gas
The rotating speed growth rate of turbine, until the real-time rotating speed of gas turbine reaches the second rotating speed of target.
Preferably, the original oil pressure of the volume adjustable hydraulic pump 2 is its highest operating oil pressure.
The gas turbine Closed Hydraulic starting system of the present invention, volume adjustable hydraulic pump 2 is driven so as to quantitatively from starter 11
Hydraulic motor 3 provides high pressure liquid force feed, and volume adjustable hydraulic pump 2 gives system repairing for starting the pump oil of oil sources 5 certainly, exports high-pressure and hydraulic
Oil to constant displacement hydraulic motor 3, the output shaft of constant displacement hydraulic motor 3 is used to drive gas turbine gear-box 5, plays gas turbine
Dynamic, constant displacement hydraulic motor 3 is directly arrived by the direct oil return of 2 oil inlet of volume adjustable hydraulic pump 21 to volume adjustable hydraulic pump 2, rather than oil return
Start oil sources 5, so as to form Closed Hydraulic starting system, cranking performance rating is high, and pipeline is simple, and fault rate is low, and reliability is high.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, simple is made to the accompanying drawing used required for the present invention below
Introduce, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ordinary skill people
For member, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the gas turbine Closed Hydraulic starting system of the present invention.
Fig. 2 is the hydraulic starting feedback control schematic diagram of the gas turbine Closed Hydraulic starting system of the present invention.
Description of reference numerals in figure：
1：Starter；2：Volume adjustable hydraulic pump；3：Constant displacement hydraulic motor；4：Gas turbine gear-box；5：Start oil sources；6：Turn
Fast sensor；7：Control circuit；21：Volume adjustable hydraulic pump oil inlet；22 volume adjustable hydraulic pump oil-outs；23：Volume adjustable hydraulic pump repairing
Mouthful.
Embodiment
Below in conjunction with accompanying drawing, clear, complete description is carried out to the technical scheme in the present invention, it is clear that described
Embodiment is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is general
All other embodiment that logical technical staff is obtained on the premise of creative work is not made, belongs to protection of the present invention
Scope.
Embodiment one
As shown in figure 1, gas turbine Closed Hydraulic starting system includes starter 1, volume adjustable hydraulic pump 2 and quantitative hydraulic horse
Up to 3；
The output of the starter 1 is connected with the volume adjustable hydraulic pump 2, for driving the volume adjustable hydraulic pump 2 to work；
The volume adjustable hydraulic pump 2 has oil inlet 21, oil-out 22 and repairing mouth 23；
The repairing mouthful 23 of the volume adjustable hydraulic pump 2 is connected with starting oil sources 5；
The oil-out 22 of the volume adjustable hydraulic pump 2 connects the oil inlet of constant displacement hydraulic motor 3 by pipeline；
The oil inlet 21 of volume adjustable hydraulic pump 2 connects the oil-out of constant displacement hydraulic motor 3 by pipeline；
The output shaft of the constant displacement hydraulic motor 3 is connected with gas turbine gear-box 4.
Preferably, the starter 1 is motor or engine.
Hydraulic variable displacement pump can be adjusted within the specific limits in the presence of variable control device according to requirements of one's work
Output characteristics.It is a certain execution object can be made to transport to positive and negative both direction at a predetermined rate using the purpose of hydraulic system
It is dynamic, it is that governing speed need to be throttled, causes energy to be lost, and cause system effectiveness to reduce, it is that this need to be become using hydraulic pressure
Amount pump realizes volumetric void fraction.When carrying out position and speed control using hydraulic variable displacement pump, minimal energy loss.Correctly use and
The flow of hydraulic variable displacement pump is adjusted, its discharge can be made to meet the flow of load movement speed needs.
Constant displacement hydraulic motor is that each revolution of theoretical output discharge capacity is constantHydraulic motor.HaveNoiseLow, efficiency high, volume
Small, lightweight, long lifespan, variable format are complete, consume energy less, be adaptable to a series of features such as a variety of hydraulic mediums.And use
There was only partial discharge supply load during constant displacement hydraulic motor, remaining flow usually requires bypass to fuel tank.
The gas turbine Closed Hydraulic starting system of embodiment one, volume adjustable hydraulic pump 2 is driven so as to calmly from starter 11
Measure hydraulic motor 3 and high pressure liquid force feed is provided, volume adjustable hydraulic pump 2 gives system repairing for starting the pump oil of oil sources 5 certainly, exports high pressure liquid
Force feed to constant displacement hydraulic motor 3, the output shaft of constant displacement hydraulic motor 3 is used to drive gas turbine gear-box 5, plays gas turbine
Dynamic, constant displacement hydraulic motor 3 is directly arrived by the direct oil return of 2 oil inlet of volume adjustable hydraulic pump 21 to volume adjustable hydraulic pump 2, rather than oil return
Start oil sources 5, so as to form Closed Hydraulic starting system, cranking performance rating is high, and pipeline is simple, and fault rate is low, and reliability is high.
Embodiment two
Based on embodiment one, as shown in Fig. 2 gas turbine Closed Hydraulic starting system also includes speed probe 6, control
Circuit 7；
The speed probe 6, for detecting the real-time rotating speed of gas turbine；
The control circuit 7, turns in real time according to the gas turbine that the rotating speed of target of setting and the speed probe 6 feed back
Speed, controls the discharge capacity of the volume adjustable hydraulic pump 2；When the starter start working and the real-time rotating speed of gas turbine be less than first
Rotating speed of target, controls the discharge capacity increase of the volume adjustable hydraulic pump 2；When the real-time rotating speed of gas turbine reaches first object rotating speed, control
The gas turbine igniting is made to start.
Preferably, the control circuit 7, when the real-time rotating speed of gas turbine reaches the second rotating speed of target, controls described start
Machine 1 is stopped, and the second rotating speed of target is higher than first object rotating speed.
Preferably, first object rotating speed is 10% to 20% (such as 15%) of gas turbine maximum speed, the second target
Rotating speed is 40% to 60% (such as 50%) of gas turbine maximum speed.
Preferably, the original oil pressure of the volume adjustable hydraulic pump 2 is its highest operating oil pressure.
The gas turbine Closed Hydraulic starting system of embodiment two, original oil pressure is set to by the pressure of volume adjustable hydraulic pump 2, by
Starter 1 drives volume adjustable hydraulic pump 2, so as to provide high pressure liquid force feed to constant displacement hydraulic motor 3, control circuit 7 is passed according to rotating speed
The real-time rotating speed of gas turbine that sensor 6 feeds back determines the rotating speed of constant displacement hydraulic motor output shaft, controls to adjust volume adjustable hydraulic pump 2
Discharge capacity, drives constant displacement hydraulic motor 3, reaches the rotating speed of target required for gas turbine, reaches and is closed after the second rotating speed of target
Shut motivation.
Embodiment three
Gas turbine Closed Hydraulic starting system based on embodiment two, the control circuit 7, when the starter starts
Work and the real-time rotating speed of gas turbine is less than first object rotating speed, control the discharge capacity of the volume adjustable hydraulic pump 2 with First Speed
Increase；When the real-time rotating speed of gas turbine reaches first object rotating speed, the gas turbine igniting is controlled to start, and control the change
The discharge capacity of amount hydraulic pump 2 is increased with second speed, and second speed is higher than First Speed, and makes the rotating speed of the output shaft of hydraulic motor 3
Growth rate, which is more than gas turbine own combustion, makes the rotating speed growth rate of gas turbine, until the real-time rotating speed of gas turbine reaches
Second rotating speed of target.
The gas turbine Closed Hydraulic starting system of embodiment three is (low in the slow-speed of revolution stage that gas turbine starts early stage
In first object rotating speed), run with peak torque, so as to reduce the starting time, this stage gas turbine power output gradually increases
Plus；And the high rotating speed stage in later stage is started in gas turbine, run with constant peak power, so as to improve system effectiveness.
The preferred embodiment of the application is these are only, is not used to limit the application.Come for those skilled in the art
Say, the application there can be various modifications and variations.It is all any modifications within spirit herein and principle, made, equivalent
Replace, improve etc., it should be included within the protection domain of the application.
Claims (8)
1. a kind of gas turbine Closed Hydraulic starting system, it is characterised in that including starter (1), volume adjustable hydraulic pump (2), determine
Measure hydraulic motor (3)；
The output of the starter (1) is connected with the volume adjustable hydraulic pump (2), for driving the volume adjustable hydraulic pump (2) to work；
The volume adjustable hydraulic pump (2) has oil inlet (21), oil-out (22) and repairing mouthful (23)；
The repairing mouthful (23) of the volume adjustable hydraulic pump (2) is connected with starting oil sources (5)；
The oil-out (22) of the volume adjustable hydraulic pump (2) connects the oil inlet of constant displacement hydraulic motor (3) by pipeline；
The oil inlet (21) of the volume adjustable hydraulic pump (2) connects the oil-out of constant displacement hydraulic motor (3) by pipeline；
The output shaft of the constant displacement hydraulic motor (3) is connected with gas turbine gear-box (4).
2. gas turbine Closed Hydraulic starting system according to claim 1, it is characterised in that
The starter (1) is motor or engine.
3. gas turbine Closed Hydraulic starting system according to claim 1, it is characterised in that
Gas turbine Closed Hydraulic starting system also includes speed probe (6), control circuit (7)；
The speed probe (6), for detecting the real-time rotating speed of gas turbine；
The control circuit (7), turns in real time according to the gas turbine that the rotating speed of target of setting and the speed probe (6) feed back
Speed, controls the discharge capacity of the volume adjustable hydraulic pump (2)；When the starter (1) start working and the real-time rotating speed of gas turbine is small
In first object rotating speed, the discharge capacity increase of the volume adjustable hydraulic pump (2) is controlled；When gas turbine detection rotating speed reaches first object
Rotating speed, controls the gas turbine igniting to start.
4. gas turbine Closed Hydraulic starting system according to claim 3, it is characterised in that
The control circuit (7), when the real-time rotating speed of gas turbine reaches the second rotating speed of target, controls the starter (1) to stop
Work, the second rotating speed of target is higher than first object rotating speed.
5. gas turbine Closed Hydraulic starting system according to claim 4, it is characterised in that
First object rotating speed is 10% to the 20% of gas turbine maximum speed；
Second rotating speed of target is 40% to the 60% of gas turbine maximum speed.
6. gas turbine Closed Hydraulic starting system according to claim 5, it is characterised in that
First object rotating speed is the 15% of gas turbine maximum speed；
Second rotating speed of target is the 50% of gas turbine maximum speed.
7. gas turbine Closed Hydraulic starting system according to claim 4, it is characterised in that
It is described control circuit (7), when the starter start working and the real-time rotating speed of gas turbine be less than first object rotating speed,
The discharge capacity of the volume adjustable hydraulic pump (2) is controlled to increase with First Speed；When the real-time rotating speed of gas turbine reaches first object rotating speed,
Control the gas turbine igniting to start, and control the discharge capacity of the volume adjustable hydraulic pump (2) to increase with second speed, second speed
Higher than First Speed, the rotating speed growth rate of hydraulic motor (3) output shaft is more than gas turbine own combustion makes gas turbine
Rotating speed growth rate, until the real-time rotating speed of gas turbine reaches the second rotating speed of target.
8. the gas turbine Closed Hydraulic starting system according to claim 3 or 4, it is characterised in that
The original oil pressure of the volume adjustable hydraulic pump (2) is its highest operating oil pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710523770.8A CN107120195A (en) | 2017-06-30 | 2017-06-30 | gas turbine closed hydraulic starting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710523770.8A CN107120195A (en) | 2017-06-30 | 2017-06-30 | gas turbine closed hydraulic starting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107120195A true CN107120195A (en) | 2017-09-01 |
Family
ID=59730487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710523770.8A Pending CN107120195A (en) | 2017-06-30 | 2017-06-30 | gas turbine closed hydraulic starting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107120195A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111065535A (en) * | 2017-09-08 | 2020-04-24 | 康明斯有限公司 | Hydraulic system for engine starter and generator |
| CN112727605A (en) * | 2020-12-31 | 2021-04-30 | 青岛中科国晟动力科技有限公司 | Gas turbine starting control method and device |
| CN112943717A (en) * | 2021-01-28 | 2021-06-11 | 华电通用轻型燃机设备有限公司 | Hydraulic starting system for aeroderivative gas turbine generator set |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111065535A (en) * | 2017-09-08 | 2020-04-24 | 康明斯有限公司 | Hydraulic system for engine starter and generator |
| CN111065535B (en) * | 2017-09-08 | 2021-08-03 | 康明斯有限公司 | Hydraulic system for engine starter and generator |
| CN112727605A (en) * | 2020-12-31 | 2021-04-30 | 青岛中科国晟动力科技有限公司 | Gas turbine starting control method and device |
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| CN112943717A (en) * | 2021-01-28 | 2021-06-11 | 华电通用轻型燃机设备有限公司 | Hydraulic starting system for aeroderivative gas turbine generator set |
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