CN207500001U - A kind of hydrauliccranking system applied to small size gas turbine - Google Patents
A kind of hydrauliccranking system applied to small size gas turbine Download PDFInfo
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- CN207500001U CN207500001U CN201721266037.4U CN201721266037U CN207500001U CN 207500001 U CN207500001 U CN 207500001U CN 201721266037 U CN201721266037 U CN 201721266037U CN 207500001 U CN207500001 U CN 207500001U
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- pressure
- fuel tank
- plunger pump
- hydrauliccranking
- variable plunger
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Abstract
The utility model is related to a kind of hydrauliccranking systems applied to small size gas turbine.The hydrauliccranking system includes fuel tank, motor, axial variable plunger pump, solenoid-operated proportional pressure valve, pressure safety valve, pressure transmitter, hydraulic motor, gear-box and speed probe, the oil inlet of the axial variable plunger pump motor-driven and the oil outlet of fuel tank connect, and drain tap is connect with fuel tank；The outlet connection of pressure transmitter and axial variable plunger pump；The oil outlet of hydraulic motor oil inlet and Variable plunger pump connects, and drain tap is connect with fuel tank, and hydraulic motor output shaft is connect with gear-box by clutch；The outlet of the entrance and Variable plunger pump of pressure safety valve connects, and outlet is connect with fuel tank.Above-mentioned hydrauliccranking system can realize two standalone features：First, the fuel gas before igniting in purge compressor and discharge duct.Second is that drive train rotation is until self-sustain speed.
Description
Technical field
The utility model belongs to gas turbine application technical field, and in particular to a kind of liquid applied to small size gas turbine
Press starting system.
Background technology
Gas Turbine Generating Units with its high degree of automation, the advantages that start and stop speed is fast, efficient, energy conservation and environmental protection, obtain
With the extensive use in National Power System.Small size gas turbine integrated level is high, it is desirable that the ancillary equipments structure such as starting system is tight
It gathers, may be mounted on combustion engine chassis.And sometimes for frequent start-stop turbine, therefore have to the reliability of the starting of turbine higher
Requirement, generally have the start modes such as pneumatic, electronic, hydraulic pressure, diesel engine starting.But above-mentioned starting process is relatively cumbersome,
Structure is not compact enough, in turn results in the stability difference of starting and the waste of space and cost.
Invention content
Problem to be solved in the utility model be to provide a kind of stabilization, compact small size gas turbine hydraulic starting system
System realizes the starting of prefiring purging and unit, and this system saves space and the cost of combustion engine.
The present invention be solve its technical problem used by technical solution be provide it is a kind of be applied to small size gas turbine
Hydrauliccranking system, including fuel tank, motor, axial variable plunger pump, solenoid-operated proportional pressure valve, pressure safety valve, pressure inverting
Device, hydraulic motor, gear-box and speed probe, the oil inlet of axial variable plunger pump motor-driven and fuel tank it is fuel-displaced
Mouth connection, drain tap are connect with fuel tank；The outlet connection of pressure transmitter and axial variable plunger pump；Hydraulic motor oil inlet
It is connect with the oil outlet of Variable plunger pump, drain tap is connect with fuel tank, and hydraulic motor output shaft passes through clutch with gear-box
Connection；The outlet of the entrance and Variable plunger pump of pressure safety valve connects, and outlet is connect with fuel tank.
Further, the fuel tank and Lubricating oil tank one.
Further, the proportional pressure front guide valve of solenoid-operated proportional pressure valve is controlled by external automatically controlled module for power supply, utilizes electricity
Gas signal realizes that the compensation pressure progress to pump is stepless regulated.
Further, the pressure of pressure safety valve is set as the maximum outlet pressure of variable pump.
The beneficial effects of the utility model are：This starting system is simple, compact, purging pressure before the realization igniting that can stablize
Fuel gas and drive train rotation in contracting machine and discharge duct is until self-sustain speed.In addition fuel tank and Lubricating oil tank
One without separately setting device, saves cost, enhances the reliability of starting system, can extensive use.
Description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the system diagram of the utility model.
Fig. 2 is generating unit speed curve graph in the utility model.
In figure：1st, fuel tank, 2, motor, 3, axial variable plunger pump, 4, solenoid-operated proportional pressure valve, 5, pressure safety valve, 6,
Pressure transmitter, 7, hydraulic motor, 8, gear-box, 9, speed probe.
Specific embodiment
The hydrauliccranking system for inventing a kind of involved small size gas turbine is described in detail referring to the drawings.
As shown in Figure 1, a kind of hydrauliccranking system applied to small size gas turbine, including fuel tank 1, motor 2, axial change
Measure plunger pump 3, solenoid-operated proportional pressure valve 4, pressure safety valve 5, pressure transmitter 6, hydraulic motor 7, gear-box 8 and revolution speed sensing
Device 9, the oil inlet of the axial variable plunger pump 3 driven by motor 2 are connect with the oil outlet of fuel tank 1, and drain tap connects with fuel tank 1
It connects；Pressure transmitter 6 is connect with the outlet of axial variable plunger pump 3；7 oil inlet of hydraulic motor is fuel-displaced with Variable plunger pump 3
Mouth connection, drain tap are connect with fuel tank, and 7 output shaft of hydraulic motor is connect with gear-box 8 by clutch；Pressure safety valve 5
Entrance connect with the outlet of Variable plunger pump 3, outlet connect with fuel tank 1.Speed probe 9 is used to implement detection master in real time
Rotating speed.
The fuel tank 1 and Lubricating oil tank one.
The proportional pressure front guide valve of the solenoid-operated proportional pressure valve 4 is controlled by external automatically controlled module for power supply, using electrical
Signal realizes that the compensation pressure progress to pump is stepless regulated.In addition, using different control orifices, different pressures can be obtained
Power rated value.
The pressure of pressure safety valve 5 is set as the maximum outlet pressure of variable pump.
It is started as shown in Fig. 2, being realized using a kind of hydrauliccranking system applied to small size gas turbine of the utility model
Process including transmission shaft accelerates, cleans, slows down, again speeds up four-stage for the first time.
First boost phase：The rotating speed under the drive of motor 2 of Variable plunger pump 3 gradually increases, right by speed probe 9
The real-time detection feedback of the speed of mainshaft, and the discharge capacity of axial variable plunger pump 3 is controlled by controlling solenoid-operated proportional pressure valve 4,
And then realize the acceleration of main shaft, until reaching cleaning speed.Clean the 20%-30% that rotating speed is about gas turbine rated speed.
The cleaning stage：Reach after cleaning rotating speed, the discharge capacity of axial variable plunger pump 3 is constant, keeps stabilized (steady-state) speed.Utilize pressure
Mechanism of qi outlet air carries out unit the cold blowing of certain time, blows the fuel gas that may be leaked into unit off or is generated because of long-pending oil
Mist of oil.The time blown clearly will select according to the volume of the exhaust duct blown clearly, at least can be by entire exhaust duct volume three times
Air scavenging is fallen, and can avoid detonation in this way.
Decelerating phase：Fire speed is typically about the 15%-22% of combustion engine rated speed.By reducing Variable plunger pump 3
Discharge capacity reduce the rotating speed of hydraulic motor 7, and then be reduced to the fire speed of unit.
Again speed up the stage：After igniting, the power of hydraulic motor 7 and the power that turbine is sent out make generating unit speed it is rapid on
It rises, until during unit self-sustain speed, clutch disconnects, and Variable plunger pump 3 and hydraulic motor 7 start draining at this time, then by motor 2
Power-off is so far completed to start.
In above-mentioned starting process, all by the tach signal of the feedback of speed probe 9 come control solenoid-operated proportional pressure valve 4 into
And the discharge capacity of axial variable plunger pump 3 is controlled, so as to fulfill the speed change of unit.
The beneficial effects of the utility model are：This starting system is simple, compact, purging pressure before the realization igniting that can stablize
Fuel gas and drive train rotation in contracting machine and discharge duct is until self-sustain speed.In addition fuel tank and Lubricating oil tank
One without separately setting device, saves cost, enhances the reliability of starting system, can extensive use.
Specific embodiment of the utility model is explained in detail above in conjunction with attached drawing, but the utility model and unlimited
In above-described embodiment, within the knowledge of a person skilled in the art, the utility model can also not departed from
Various changes can be made under the premise of objective.
Claims (4)
1. a kind of hydrauliccranking system applied to small size gas turbine, which is characterized in that the hydrauliccranking system includes oil
Case（1）, motor（2）, axial variable plunger pump（3）, solenoid-operated proportional pressure valve（4）, pressure safety valve（5）, pressure transmitter
（6）, hydraulic motor（7）, gear-box（8）And speed probe（9）, by motor（2）The axial variable plunger pump of drive（3）Into
Hydraulic fluid port is connect with the oil outlet of fuel tank (1), drain tap and fuel tank（1）Connection；Pressure transmitter（6）With axial variable plunger pump
（3）Outlet connection；Hydraulic motor（7）Oil inlet and Variable plunger pump（3）Oil outlet connection, drain tap and fuel tank connect
It connects, hydraulic motor（7）Output shaft and gear-box（8）It is connected by clutch；Pressure safety valve（5）Entrance and Variable plunger pump
（3）Outlet connection, outlet and fuel tank（1）Connection.
2. a kind of hydrauliccranking system applied to small size gas turbine according to claim 1, which is characterized in that described
Fuel tank（1）It is wholely set with Lubricating oil tank.
3. a kind of hydrauliccranking system applied to small size gas turbine according to claim 1, which is characterized in that described
Solenoid-operated proportional pressure valve（4）Proportional pressure front guide valve controlled by external automatically controlled module for power supply, realized using electric signal to pump
Compensation pressure carry out it is stepless regulated.
4. a kind of hydrauliccranking system applied to small size gas turbine according to claim 1, which is characterized in that described
Pressure safety valve（5）Pressure be set as the maximum outlet pressure of variable pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721266037.4U CN207500001U (en) | 2017-09-29 | 2017-09-29 | A kind of hydrauliccranking system applied to small size gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721266037.4U CN207500001U (en) | 2017-09-29 | 2017-09-29 | A kind of hydrauliccranking system applied to small size gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207500001U true CN207500001U (en) | 2018-06-15 |
Family
ID=62499661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721266037.4U Active CN207500001U (en) | 2017-09-29 | 2017-09-29 | A kind of hydrauliccranking system applied to small size gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207500001U (en) |
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2017
- 2017-09-29 CN CN201721266037.4U patent/CN207500001U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 116610 No. 73, Zhenpeng industrial city, Dalian Economic and Technological Development Zone, Liaoning Province Patentee after: Dalian oppner Turbine Power Technology Co.,Ltd. Address before: 116610 No. 73, Zhenpeng industrial city, Dalian Economic and Technological Development Zone, Liaoning Province Patentee before: DALIAN ENERGAS TURBINE POWER TECHNOLOGY Co.,Ltd. |