CN208184800U - A kind of external steam-supplying system of cogeneration units Saving energy in Steam Turbine - Google Patents
A kind of external steam-supplying system of cogeneration units Saving energy in Steam Turbine Download PDFInfo
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- CN208184800U CN208184800U CN201820730890.5U CN201820730890U CN208184800U CN 208184800 U CN208184800 U CN 208184800U CN 201820730890 U CN201820730890 U CN 201820730890U CN 208184800 U CN208184800 U CN 208184800U
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- saving energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
Abstract
The utility model discloses a kind of external steam-supplying systems of cogeneration units Saving energy in Steam Turbine.Different from traditional route, the utility model is sent directly to external factory steam by the steam that small turbine exports, and the steam output pipe remittance of small turbine has desuperheating water, for the cooling steam being discharged by small turbine.The utility model realizes the reasonable cascade utilization of steam, and while greatly improving unit performance driving economy, pollutant discharge amount is greatly reduced, and environmental benefit is significant in the industrial arcola of substitution periphery high energy consumption, pollution weight.
Description
[technical field]
The utility model belongs to the energy-saving field of cogeneration units more particularly to a kind of cogeneration units steam turbine
The external steam-supplying system of energy conservation.
[background technique]
External steam-supplying system scheme has following several forms in Conventional thermoelectric coproduction unit: 1) after steam temperature reducing and pressure reducing directly
It confesses；2) high steam is confessed by mixing after pressure matcher injection low-pressure steam；3) small back pressure machine is set, realizes that heat supply is steamed
It is externally confessed after the overbottom pressure cascade utilization of vapour, small back pressure machine can drag set auxiliary machinery, can also connect generator input station service system
System.
In existing cogeneration units, air-introduced machine is the maximum subsidiary engine of wasted work, and most at present is motor drive.With
The increase-volume optimization of the environmental protection facilities such as desulphurization and denitration, dedusting, boiler wind and smoke system resistance constantly increase, the air-introduced machine that first wife sets
Power output is not able to satisfy boiler full load service requirement.To realize air-introduced machine increase-volume, the more modification scheme of application is air inducing at present
Machine electric drive is changed to small turbine driving.
Once implementing transformation, small turbine capacity is determined, if the cogeneration units implement ultra-clean discharge improvement project again,
Because the raising of wind and smoke resistance causes air-introduced machine power to increase, it will small turbine power output occur and be unable to satisfy air-introduced machine maximum power
Situation needs to carry out secondary transformation to small turbine, and investment waste resulting from will increase considerably.
Small turbine and motor joint driving draught fan system, preferably resolve this contradiction.Such as by external steam supply
System is organic to join together, and will greatly improve the energy circulation efficiency of cogeneration units.
[utility model content]
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts provides a kind of cogeneration units steam turbine
The external steam-supplying system of energy conservation；Small steam turbine exhaust steam is directly used in externally industrial steam supply, realizes the effective and reasonable ladder of industrial steam
Grade utilizes, and has and saves equipment investment, the redundant height of air-introduced machine power source, improve unit overall economy quality, reduce station service power consumption rate.
In order to achieve the above objectives, the utility model is achieved using following technical scheme:
A kind of external steam-supplying system of cogeneration units Saving energy in Steam Turbine, including small turbine, the steam of small turbine are defeated
Pipeline is connect with the input terminal of extraneous factory steam out；It is converged in the steam output pipe of small turbine by desuperheating water input channel
There is desuperheating water.
Further improvement of the utility model is:
The second valve group for adjusting desuperheating water is provided on the desuperheating water input channel.
The steam output pipe of the small turbine is provided with the first valve group before desuperheating water remittance.
The small turbine selects backpressure small turbine.
Air-introduced machine and motor are connected in turn on the output shaft of the small turbine；Air-introduced machine is connected with boiler, boiler
It is connected with main steam turbine；The steam input terminal of small turbine is connect with boiler and main steam turbine.
Shaft coupling is provided between the air-introduced machine and motor.
The motor is connected by high voltage bus with station service electrical system.
The position of the air-introduced machine and motor can exchange.
The small turbine is connect by gear-box and clutch with air-introduced machine or motor.
Compared with prior art, the utility model has the following beneficial effects:
The utility model discloses a kind of external steam-supplying systems of cogeneration units Saving energy in Steam Turbine.Different from traditional road
Line, the utility model are sent directly to external factory steam, the steam output pipe of small turbine by the steam that small turbine exports
Road remittance has desuperheating water, for the cooling steam being discharged by small turbine.The utility model realizes the reasonable cascade utilization of steam, greatly
While width improves unit performance driving economy, pollutant row is greatly reduced in the industrial arcola of substitution periphery high energy consumption, pollution weight
High-volume, environmental benefit is significant.
Further, the desuperheating water amount of coming into operation is according to the difference of extraneous factory steam parameter requirements and small steam turbine exhaust steam parameter
It determines, passes through the second valve group adjustment.
Further, it is provided with switch on the steam output pipe of small turbine, for managing the steaming of small turbine output
Vapour.
Further, small turbine select backpressure small turbine, enable small turbine be discharged the steam overwhelming majority by
Heat user utilizes, and the thermal efficiency of entire unit is high.
Further, small turbine, air-introduced machine and motor are coaxially connected, and small turbine is able to drive air-introduced machine when running
Operation, air-introduced machine are power dual input；Air-introduced machine is connected with boiler simultaneously, for normal operation of boiler to be discharged to ignition of the boiler
The flue gas generated in the process, boiler is for supplying main steam turbine steam；It simultaneously can by the steam that boiler or main steam turbine flow out
Small turbine is supplied, realizes recycling for energy.
Further, shaft coupling is provided between air-introduced machine and motor, motor realizes supply air-introduced machine electric energy, driving
Air-introduced machine operates normally or starting.
Further, motor, when small turbine drive air-introduced machine work, meets air inducing by connecting with station service electrical system
Under the premise of machine operating power consumption, the motor of original package is automatically changeb to dynamotor operating status, and backpressure small turbine is remained
Complementary work rate is converted to electric energy and is incorporated to unit station service electrical system, improves unit power supply capacity, reduces unit station service power consumption rate.
Further, the position of air-introduced machine and motor can exchange in the utility model, and connection relationship being capable of basis
On-site actual situations adjustment.
Further, it is arranged between small turbine and air-introduced machine or motor by gear-box and clutch, clutch is used for
Start small turbine, gear-box is used to adjust the revolving speed of small turbine.
[Detailed description of the invention]
Fig. 1 is the system diagram of the external steam-supplying system embodiment 1 of cogeneration units Saving energy in Steam Turbine of the utility model；
Fig. 2 is the system diagram of the external steam-supplying system embodiment 2 of cogeneration units Saving energy in Steam Turbine of the utility model；
Wherein: 1- small turbine；2- gear-box；3- clutch；4- air-introduced machine；5- shaft coupling；6- motor；The first valve of 7-
Door group；The second valve group of 8-；9- main steam turbine；10- boiler；11- station service electrical system；12- desuperheating water input channel.
[specific embodiment]
The utility model is described in further detail with reference to the accompanying drawing:
Referring to Fig. 1 and Fig. 2, certain of the steam input terminal of the utility model small turbine 1 and main steam turbine 9 and boiler 10
Grade steam output end connects, and has desuperheating water by the remittance of desuperheating water input channel 12 in the steam output pipe of small turbine 1；Small vapour
The steam output pipe of turbine 1 is finally connect with the input terminal of extraneous factory steam；The steam output pipe of small turbine 1 is subtracting
Warm water is provided with the first valve group 7 before importing；The second valve group 8 for adjusting desuperheating water is provided on desuperheating water input channel 12；
Small turbine 1 selects back pressure type.
Embodiment 1
Referring to Fig. 1, the output shaft of small turbine 1 is connected with gear-box 2, clutch 3, air-introduced machine 4,5 and of shaft coupling in turn
Motor 6, motor 6 are connected by high voltage bus and station service electrical system 11；Air-introduced machine 4 is connected with boiler 10 simultaneously, boiler 10
Connected with main steam turbine 9, main steam turbine 9 connects with the steam input terminal of small turbine 1, the steam output end of boiler 10 also with it is small
The steam input terminal of steam turbine 1 connects.
Embodiment 2
Referring to fig. 2, the output shaft of small turbine 1 is connected with gear-box 2, clutch 3, motor 6,5 and of shaft coupling in turn
Air-introduced machine 4, motor 6 are connected by high voltage bus and station service electrical system 11；Air-introduced machine 4 is connected with boiler 10 simultaneously, boiler 10
Connected with main steam turbine 9, main steam turbine 9 connects with the steam input terminal of small turbine 1, the steam output end of boiler 10 also with it is small
The steam input terminal of steam turbine 1 connects.
Working principle of the utility model is:
Small turbine 1 selects back pressure type, and steam is derived from certain grade of main steam turbine 9 or the somewhere steam of boiler 10, small turbine 1
Type being capable of TB point (fan efficiency examination point) according to unit, the operating point THA (heat consumption examination operating condition) or large capacity work
Make point type selecting, it is coaxially connected by clutch 3 and gear-box 2 and motor 6 or air-introduced machine 4, it is not reconfigured 4 Special electric of air-introduced machine
Motivation.Motor 6 is connect with unit station service electrical system 11 by high voltage bus.It can directly be opened by former motor 6 when unit starting
Dynamic air-introduced machine 4 also can start air-introduced machine 4 by adjacent machine steam drive small turbine 1, realize that boiler 10 is lighted a fire.With unit load
Increase, after the machine supply 1 steam parameter of small turbine is met the requirements, 1 vapour source of small turbine is switched to the machine.Small turbine 1 exports
Revolving speed n of the revolving speed after the deceleration of gear-box 21With 6 revolving speed n of motor2When synchronous, clutch 3 realizes engagement capability, small turbine 1
It is rotated together with motor 6, synchronous driving air-introduced machine 4.Under each load of unit actual motion, small turbine 1 is into vapour tune
Standard-sized sheet can be achieved in door, maintains high-efficiency and economic operation；Motor 6 switchs to generating state automatically, and external output power reduces unit
Station service power consumption rate.
The igniting of boiler 10 is realized in the rotation of air-introduced machine 4, and the steam of 10 output of boiler is input to main steam turbine 9；Small turbine 1
Vapour source may be derived from 10 somewhere steam extraction of boiler, also may be derived from certain grade of steam extraction of main steam turbine 9, determine depending on concrete scheme；When the first valve group 7
When opening, direct external steam supply after reasonable cascade utilization of the steam by the realization energy of small turbine 1；The steam quilt of output simultaneously
Desuperheating water cools down, and the desuperheating water amount of coming into operation is determined according to the difference of 1 steam discharge parameter of extraneous factory steam parameter requirements and small turbine,
Especially by 8 adjustment of the second valve group.
Air-introduced machine improves operational reliability by vapour, electric double drive；Backpressure small turbine is into vapour tune when unit operates normally
Door standard-sized sheet reduces into vapour restriction loss, improves backpressure small turbine internal efficiency；Under the premise of meeting air-introduced machine operating power consumption,
The motor of original package is automatically changeb to dynamotor operating status, and backpressure small turbine dump power is converted to electric energy and simultaneously
Enter unit station service electrical system, improve unit power supply capacity, reduces unit station service power consumption rate；Steam realizes energy by backpressure small turbine
After the reasonable cascade utilization of amount, steam discharge is directly used in industrial steam supply.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (9)
1. a kind of external steam-supplying system of cogeneration units Saving energy in Steam Turbine, which is characterized in that including small turbine (1), small vapour
The steam output pipe of turbine (1) is connect with the input terminal of extraneous factory steam；Lead in the steam output pipe of small turbine (1)
Crossing desuperheating water input channel (12) and converging has desuperheating water.
2. a kind of external steam-supplying system of cogeneration units Saving energy in Steam Turbine according to claim 1, which is characterized in that subtract
The second valve group (8) for adjusting desuperheating water is provided on warm water input channel (12).
3. a kind of external steam-supplying system of cogeneration units Saving energy in Steam Turbine according to claim 1, which is characterized in that small
The steam output pipe of steam turbine (1) is provided with the first valve group (7) before desuperheating water remittance.
4. a kind of external steam-supplying system of cogeneration units Saving energy in Steam Turbine according to claim 1, which is characterized in that small
Steam turbine (1) selects backpressure small turbine.
5. a kind of external steam-supplying system of cogeneration units Saving energy in Steam Turbine according to claim 1, which is characterized in that small
It is connected with air-introduced machine (4) and motor (6) on the output shaft of steam turbine (1) in turn；Air-introduced machine (4) and boiler (10) connection, pot
Furnace (10) and main steam turbine (9) connection；The steam input terminal of small turbine is connect with boiler (10) and main steam turbine (9).
6. a kind of external steam-supplying system of cogeneration units Saving energy in Steam Turbine according to claim 5, which is characterized in that draw
Shaft coupling (5) are provided between blower (4) and motor (6).
7. a kind of external steam-supplying system of cogeneration units Saving energy in Steam Turbine according to claim 5, which is characterized in that electricity
Motivation (6) is connected by high voltage bus and station service electrical system (11).
8. a kind of external steam-supplying system of cogeneration units Saving energy in Steam Turbine according to claim 5, which is characterized in that draw
The position of blower (4) and motor (6) can exchange.
9. a kind of external steam-supplying system of cogeneration units Saving energy in Steam Turbine according to claim 8, which is characterized in that small
Steam turbine (1) is connect by gear-box (2) and clutch (3) with air-introduced machine (4) or motor (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820730890.5U CN208184800U (en) | 2018-05-16 | 2018-05-16 | A kind of external steam-supplying system of cogeneration units Saving energy in Steam Turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820730890.5U CN208184800U (en) | 2018-05-16 | 2018-05-16 | A kind of external steam-supplying system of cogeneration units Saving energy in Steam Turbine |
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| CN208184800U true CN208184800U (en) | 2018-12-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456826A (en) * | 2020-04-10 | 2020-07-28 | 陈禹 | FCERS frequency control energy recovery system and recovery and application method |
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2018
- 2018-05-16 CN CN201820730890.5U patent/CN208184800U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456826A (en) * | 2020-04-10 | 2020-07-28 | 陈禹 | FCERS frequency control energy recovery system and recovery and application method |
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