CN207348917U - Combination drive turbine system is used in a kind of natural gas afterheat power generation - Google Patents
Combination drive turbine system is used in a kind of natural gas afterheat power generation Download PDFInfo
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- CN207348917U CN207348917U CN201721396381.5U CN201721396381U CN207348917U CN 207348917 U CN207348917 U CN 207348917U CN 201721396381 U CN201721396381 U CN 201721396381U CN 207348917 U CN207348917 U CN 207348917U
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Abstract
The utility model discloses a kind of natural gas afterheat power generation combination drive turbine system, including steam turbine, hydrophobic development unit, surge tank, the exhaust outlet of boiler and variable-frequency motor driving device, exhaust outlet and the variable-frequency motor driving device of boiler are mutual chain setting；Variable-frequency motor driving device includes variable-frequency motor and the frequency converter being connected with variable-frequency motor, and frequency converter is connected with coupling device, the rotating shaft transmission connection of coupling device and steam turbine；The shaft of steam turbine is provided at both ends with for carrying out steam-tight steam seal device, and the outlet pipe of surge tank connects the steam seal device at both ends at the same time.In system provided by the utility model, variable-frequency motor driving device is added on steam-powered steam turbine, variable-frequency motor rotational speed of driving unit controllability is high, can real-time speed regulating and the stable advantage of rotating speed realize being precisely controlled and controlling in real time to steam turbine, improve the use reliability of steam turbine.
Description
Technical field
Natural gas afterheat technical field of power generation is the utility model is related to, is sent out more specifically to a kind of natural gas afterheat
Electricity uses combination drive turbine system.
Background technology
Natural gas needs high pressure in course of conveying, and reaching user needs to depressurize.Generally used in West-East National Gas Transmission Project
Combustion engine driving natural gas boosting machine makes pressure in pipeline of transferring natural gas from the west to the east maintain in certain scope, and combustion engine is discharged in the process
Go out substantial amounts of hot gas, the temperature of these hot gas is higher, at present to these hot gas using generally by hot gas come heating boiler
Interior water, produces superheated steam, and superheated steam driving steam turbine is rotated and produced electricl energy.Then user's use is supplied to, due to throttling
During the hot gas amount that discharges it is unstable, cause the shaft rotating speed of steam turbine often to occur significantly to change, it is this frequently
Change the shaft of steam turbine, can cause the service life reduction of steam turbine, and the quick speed governing relatively difficult to achieve of conventional steam turbine will
Ask.In addition, the power produced due to steam-powered steam turbine is unstable, and the user in downstream is generated and is seriously affected, is
This needs to provide a kind of turbine system of stable output power.
In conclusion how to provide a kind of turbine system of stable output power, be current those skilled in the art urgently
Problem to be solved.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of natural gas afterheat power generation combination drive steam turbine system
System, natural gas afterheat power generation is stablized with the drive system of combination drive turbine system, so that stable output power.
To achieve these goals, the utility model provides following technical solution：
A kind of natural gas afterheat power generation combination drive turbine system, including steam turbine, hydrophobic development unit, be the vapour
Turbine provides the exhaust outlet and the driving steamer of the steam-tight surge tank of bilateral, the boiler that the driving steam turbine works
The variable-frequency motor driving device of machine work, the exhaust outlet of the boiler are set with the variable-frequency motor driving device to be chain mutually
Put；
The variable-frequency motor driving device includes variable-frequency motor and the frequency converter being connected with the variable-frequency motor, the change
Frequency device is connected with coupling device, and the coupling device is connected with the rotating shaft transmission of the steam turbine；
The shaft of the steam turbine is provided at both ends with for carrying out steam-tight steam seal device, the surge tank
Outlet pipe connects the steam seal device at both ends at the same time；
The superheated steam outlet of boiler is connected with the air inlet of the surge tank, and connecting line is equipped with and is used for according to institute
State the autocontrol valve that the temperature and pressure in surge tank adjusts aperture；The cold energy input port of the surge tank connects the steamer
The cold energy delivery outlet of the condenser of machine；The low-pressure superheated steam that the admission passage in the stage casing of the steam turbine connects the boiler goes out
Mouthful；The steam outlet pipe road connection condenser of the afterbody of the steam turbine.
Preferably, the superheated steam outlet of the boiler is connected with the air intake of the steam turbine, and is set on connecting line
It is equipped with regulating valve and the fast valve closed when the throughput is less than preset value；
The superheated steam outlet of the boiler is connected with the air intake of the hydrophobic development unit, and connecting line is equipped with and opens
Close valve.
Preferably, the steam turbine connection provides the main fuel tank of lubricating oil；
The main fuel tank connects the steam turbine, the exchange profit by AC Lub oil pump, DC lubricating respectively
Oil pump and the DC lubricating are chain mutually；
The connecting line of the main fuel tank and the steam turbine be equipped with for cutting oil heat exchanger and spare change
Hot device；
The cooling oil output pipe of the heat exchanger and the spare heat exchanger is equipped with for filtering lubricant oil impurity
Oil filter, the lubricating oil pipeline that the oil filter is connected with the steam turbine is equipped with oil pressure detection devices and low oil pressure is alarmed
Device.
Preferably, the fast valve is provided with flow or the measurement fast valve for measuring the superheated steam outlet
Flow monitoring device, the monitoring device with for according to described in the flow control fast valve be opened and closed control device connect
Connect；The control device is connected with the switch valve.
Preferably, further include for its internal lubricating oil to be imported regulating system when oil mass is excessive in the main fuel tank
In high voltage startup oil pump, the main fuel tank bottom is provided with the pipeline and oil mass monitoring device for connecting the regulating system, institute
Oil mass monitoring device connection high voltage startup oil pump is stated, the pipeline connects the high voltage startup oil pump.
Preferably, temperature sensor and device for pressure measurement, the temperature sensor and institute are provided with the surge tank
Device for pressure measurement is stated to be connected with the autocontrol valve.
Preferably, the heat exchanger and the spare heat exchanger are water heat transmission equipment.
In system provided by the utility model, variable-frequency motor driving device, frequency conversion are added on steam-powered steam turbine
Motor driver rotating speed controllability is high, can real-time speed regulating and the stable advantage of rotating speed realize the accurate control to steam turbine
System and in real time control, when the superheated steam amount that waste heat boiler produces is relatively low, starts variable-frequency motor driving device and carry out process auxiliary drive
Steam turbine, realizes the stabilization of steam turbine power generation output power.In addition, the exhaust outlet of variable-frequency motor driving device and boiler driving dress
To put spare each other, any driving is broken down, and steam turbine may continue to run, and improves the operation stability of steam turbine, and
It ensure that the output of steam turbine is stablized, improve the use reliability of steam turbine.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is the embodiment of the utility model, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is a kind of signal of natural gas afterheat power generation combination drive turbine system provided by the utility model
Figure；
Fig. 2 is the fuel feeding of system provided by the utility model and the partial schematic diagram of steam turbine part；
Fig. 3 is the partial schematic diagram of steam turbine part provided by the utility model.
In Fig. 1-3：
Steam turbine 1, generator 2, hydrophobic development unit 3, surge tank 4；
Boiler 5, condenser 6, frequency converter 7, variable-frequency motor 8, coupling device 9；
Steam seal device 11, regulating valve 12, fast valve 13, autocontrol valve 14；Main fuel tank 15, AC Lub oil pump
16th, DC lubricating 17, heat exchanger 18, spare heat exchanger 19, high voltage startup oil pump 20, exhaust-valve 21, condensate pipe 22, pot
Stove low-pressure superheated steam mouth 23.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained, shall fall within the protection scope of the present invention.
The core of the utility model is to provide a kind of natural gas afterheat power generation combination drive turbine system, the natural gas
Cogeneration is stablized with the drive system of combination drive turbine system, so that stable output power.
Please refer to Fig.1 to Fig. 3, Fig. 1 is a kind of natural gas afterheat power generation combination drive vapour provided by the utility model
The schematic diagram of expander system；Fig. 2 is the fuel feeding of system provided by the utility model and the partial schematic diagram of steam turbine part；Figure
3 be the partial schematic diagram of steam turbine part provided by the utility model.
A kind of natural gas afterheat power generation combination drive turbine system provided by the utility model, including steam turbine 1,
Hydrophobic development unit 3, provide the steam-tight surge tank 4 of bilateral, the exhaust outlet for the boiler that driving steam turbine 1 works for steam turbine 1
And the variable-frequency motor driving device that driving steam turbine 1 works, exhaust outlet and the variable-frequency motor driving device of boiler are mutually to be connected
Lock is set.
Variable-frequency motor driving device includes variable-frequency motor 8 and the frequency converter 7 being connected with variable-frequency motor 8, and frequency converter 7 is with connecting
Shaft device 9 is connected, and coupling device 9 is connected with the rotating shaft transmission of steam turbine 1.
The shaft of steam turbine 1 is provided at both ends with for carrying out steam-tight steam seal device 11, the outlet of surge tank 4
Pipeline connects the steam seal device 11 at both ends at the same time.
The superheated steam outlet of boiler is connected with the air intake of surge tank 4, and connecting line is equipped with and is pressed for basis
Temperature and pressure in case 4 adjusts the autocontrol valve 14 of aperture；The condensing of the cold energy input port connection steam turbine 1 of surge tank 4
The cold energy delivery outlet of device 6；The admission passage connection boiler low-pressure superheated steam outlet 23 in the stage casing of steam turbine 1；The tail of steam turbine 1
The steam outlet pipe road connection condenser 6 in portion.
It should be noted that variable-frequency motor driving device is added on steam-powered steam turbine, variable-frequency motor driving dress
Put rotating speed controllability it is high, can real-time speed regulating and the stable advantage of rotating speed realize being precisely controlled and in real time to steam turbine 1
Control, when the superheated steam amount that waste heat boiler produces is relatively low, starts variable-frequency motor driving device and carrys out auxiliary drive turbine, real
The stabilization of existing steam turbine power generation output power.In addition, variable-frequency motor driving device and the exhaust outlet driving device of boiler are standby each other
With any driving is broken down, and steam turbine may continue to run, and improve the operation stability of steam turbine.
Variable-frequency motor driving device includes variable-frequency motor 8 and the frequency converter 7 being connected with variable-frequency motor 8, and and frequency conversion
The coupling device 9 that device 7 is connected, coupling device 9 are connected with the shaft of steam turbine 1.
Optionally, used variable-frequency motor 8, frequency converter 7 and coupling device 9 are selected according to the power of steam turbine 1
Common apparatus.
On the basis of above-described embodiment, the superheated steam outlet of boiler is connected with the air intake of steam turbine 1, and is connected
Regulating valve 12 and the fast valve 13 closed when throughput is less than preset value are provided with pipeline；The superheated steam of boiler
Outlet is connected with the air intake of hydrophobic development unit 3, and connecting line is equipped with switch valve.
Fast valve 13 can quick closedown steam turbine 1, avoid steam turbine non-productive work.It is mainly reflected in the high pressure when boiler
When gas flow is insufficient, steam turbine 1 is closed in time, non-productive work is avoided, can further lift the using effect and work of steam turbine 1
Make efficiency.
On the basis of any one above-mentioned embodiment, the connection of steam turbine 1 provides the main fuel tank 15 of lubricating oil；Main fuel tank
15 connect steam turbine 1, AC Lub oil pump 16 and direct current lubricating oil by AC Lub oil pump 16, DC lubricating 17 respectively
Pump 17 is chain mutually；
The connecting line of main fuel tank 15 and steam turbine 1 is equipped with heat exchanger 18 and spare heat exchanger for cutting oil
19；
The cooling oil output pipe of heat exchanger 18 and spare heat exchanger 19 is equipped with the oil strain for filtering lubricant oil impurity
Device, the lubricating oil pipeline that oil filter is connected with steam turbine 1 are equipped with oil pressure detection devices and low oil pressure warning device.
In the present embodiment, two mutual chain oil pumps are selected to carry out fuel-flow control to main fuel tank 15, so as to steam turbine 1
Oily supply is lubricated, so as to ensure the stability of lubricating oil supply, it is ensured that steam turbine 1 is safe to use, extends steam turbine 1
Service life.
On the basis of any one above-mentioned embodiment, fast valve 13 is provided with the stream for measuring superheated steam outlet
The monitoring device of the flow of amount or measurement fast valve 13, monitoring device and the control for 13 opening and closing of foundation flow control fast valve
Device connects；Control device is connected with switch valve.
On the basis of any one above-mentioned embodiment, further include and be used in it when oil mass is excessive in main fuel tank 15
The lubricating oil in portion imports the high voltage startup oil pump 20 in regulating system, and 15 bottom of main fuel tank is provided with pipeline and oil mass monitoring dress
Put, oil mass monitoring device connection high voltage startup oil pump 20, pipeline connection high voltage startup oil pump 20.
On the basis of any one above-mentioned embodiment, temperature sensor and pressure measurement dress are provided with surge tank 4
Put, temperature sensor and device for pressure measurement are connected with autocontrol valve 14.
Optionally, heat exchanger 18 and spare heat exchanger 19 are water heat transmission equipment.
It should be noted that in Fig. 2 and Fig. 3, the gas delivery port connection steam exhaust processing system of steam turbine 1, what boiler 5 referred to
It is the high pressure superheated steam outlet of boiler, an entrance of surge tank 4 connects condensate pipe 22, boiler low-pressure superheated steam mouth 23
Connect the middle part of steam turbine 1, the entrance connection condenser 6 of surge tank 4.
Except the natural gas afterheat power generation provided in above-mentioned each embodiment is main with combination drive turbine system
Structure and connection relation, the structure of other each several parts of the combination drive turbine system refer to the prior art, herein no longer
Repeat.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
Natural gas afterheat power generation provided by the utility model has been carried out in detail with combination drive turbine system above
Introduce.Specific case used herein is set forth the principle and embodiment of the utility model, above example
Illustrate to be only intended to help the method and its core concept for understanding the utility model.It should be pointed out that for the general of the art
For logical technical staff, on the premise of the utility model principle is not departed from, some improvement can also be carried out to the utility model
And modification, these are improved and modification is also fallen into the protection domain of the utility model claims.
Claims (7)
1. combination drive turbine system is used in a kind of natural gas afterheat power generation, it is characterised in that including steam turbine (1), hydrophobic expansion
Container (3), provide the steam-tight surge tank of bilateral (4), the pot of driving steam turbine (1) work for the steam turbine (1)
The exhaust outlet of stove and the variable-frequency motor driving device of driving steam turbine (1) work, the exhaust outlet of the boiler with it is described
Variable-frequency motor driving device is mutual chain setting；
The variable-frequency motor driving device includes variable-frequency motor (8) and the frequency converter (7) being connected with the variable-frequency motor (8),
The frequency converter (7) is connected with coupling device (9), and the coupling device (9) is connected with the rotating shaft transmission of the steam turbine (1)；
The shaft of the steam turbine (1) is provided at both ends with for carrying out steam-tight steam seal device (11), described to press
The outlet pipe of case (4) connects the steam seal device (11) at both ends at the same time；
The superheated steam outlet of boiler is connected with the air inlet of the surge tank (4), and connecting line is equipped with and is used for according to institute
State the autocontrol valve (14) that the temperature and pressure in surge tank (4) adjusts aperture；The cold energy input port of the surge tank (4) connects
Connect the cold energy delivery outlet of the condenser (6) of the steam turbine (1)；Described in the admission passage connection in the stage casing of the steam turbine (1)
The low-pressure superheated steam outlet of boiler；The steam outlet pipe road connection condenser (6) of the afterbody of the steam turbine (1).
2. combination drive turbine system is used in natural gas afterheat power generation according to claim 1, it is characterised in that the pot
Stove superheated steam outlet be connected with the air intake of the steam turbine (1), and be provided with connecting line regulating valve (12) and
The fast valve (13) closed when throughput is less than preset value；
The superheated steam outlet of the boiler is connected with the air intake of the hydrophobic development unit (3), and connecting line is equipped with and opens
Close valve.
3. combination drive turbine system is used in natural gas afterheat power generation according to claim 2, it is characterised in that the vapour
Turbine (1) connection provides the main fuel tank (15) of lubricating oil；
The main fuel tank (15) connects the steam turbine (1) by AC Lub oil pump (16), DC lubricating (17) respectively,
The AC Lub oil pump (16) and the DC lubricating (17) are chain mutually；
The connecting line of the main fuel tank (15) and the steam turbine (1) be equipped with for cutting oil heat exchanger (18) and
Spare heat exchanger (19)；
The cooling oil output pipe of the heat exchanger (18) and the spare heat exchanger (19) is equipped with miscellaneous for filtering lubricant oil
The oil filter of matter, the lubricating oil pipeline that the oil filter is connected with the steam turbine (1) are equipped with oil pressure detection devices and low
Oil pressure alarm device.
4. combination drive turbine system is used in natural gas afterheat power generation according to claim 3, it is characterised in that described fast
Close the monitoring of flow or the flow for measuring the fast valve (13) that valve (13) is provided with for measuring the superheated steam outlet
Device, the monitoring device are connected with the control device for being opened and closed according to fast valve (13) described in the flow control；It is described
Control device is connected with the switch valve (13).
5. combination drive turbine system is used in natural gas afterheat power generation according to claim 4, it is characterised in that is further included
For its internal lubricating oil to be imported to the high voltage startup oil pump in regulating system when the main fuel tank (15) interior oil mass is excessive
(20), main fuel tank (15) bottom is provided with the pipeline and oil mass monitoring device for connecting the regulating system, the oil mass prison
Survey device and connect the high voltage startup oil pump (20), the pipeline connects the high voltage startup oil pump (20).
6. combination drive turbine system is used in natural gas afterheat power generation according to claim 5, it is characterised in that described equal
Be provided with temperature sensor and device for pressure measurement in pressure case (4), the temperature sensor and the device for pressure measurement with
Autocontrol valve (14) connection.
7. combination drive turbine system is used in natural gas afterheat power generation according to claim 6, it is characterised in that described to change
Hot device (18) and the spare heat exchanger (19) are water heat transmission equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721396381.5U CN207348917U (en) | 2017-10-24 | 2017-10-24 | Combination drive turbine system is used in a kind of natural gas afterheat power generation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721396381.5U CN207348917U (en) | 2017-10-24 | 2017-10-24 | Combination drive turbine system is used in a kind of natural gas afterheat power generation |
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| CN207348917U true CN207348917U (en) | 2018-05-11 |
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| CN201721396381.5U Active CN207348917U (en) | 2017-10-24 | 2017-10-24 | Combination drive turbine system is used in a kind of natural gas afterheat power generation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687805A (en) * | 2020-12-30 | 2022-07-01 | 华能北京热电有限责任公司 | Turbine cooling and natural gas heating integrated gas turbine system |
-
2017
- 2017-10-24 CN CN201721396381.5U patent/CN207348917U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687805A (en) * | 2020-12-30 | 2022-07-01 | 华能北京热电有限责任公司 | Turbine cooling and natural gas heating integrated gas turbine system |
| CN114687805B (en) * | 2020-12-30 | 2023-08-01 | 华能北京热电有限责任公司 | Turbine cooling and natural gas heating integrated gas turbine system |
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