CN201779640U - Set boiler - Google Patents

Set boiler Download PDF

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Publication number
CN201779640U
CN201779640U CN2010202257239U CN201020225723U CN201779640U CN 201779640 U CN201779640 U CN 201779640U CN 2010202257239 U CN2010202257239 U CN 2010202257239U CN 201020225723 U CN201020225723 U CN 201020225723U CN 201779640 U CN201779640 U CN 201779640U
Authority
CN
China
Prior art keywords
boiler
steam
fan
steam turbine
boiler body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010202257239U
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Chinese (zh)
Inventor
陈旭伟
周轶喆
陈建县
胡杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guodian Zhejiang Beilun No 3 Power Generation Co Ltd
Original Assignee
Guodian Zhejiang Beilun No 3 Power Generation Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guodian Zhejiang Beilun No 3 Power Generation Co Ltd filed Critical Guodian Zhejiang Beilun No 3 Power Generation Co Ltd
Priority to CN2010202257239U priority Critical patent/CN201779640U/en
Application granted granted Critical
Publication of CN201779640U publication Critical patent/CN201779640U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a set boiler, aiming to overcome the defects of great investment, high operating cost and energy source waste caused by an electromotor driving a boiler fan. The set boiler comprises a boiler body, a generator set and a fan arranged on the air flue of the boiler body, wherein the steam pipeline of the boiler body is connected with the generator set, the driving device of the fan is a steam turbine, and the steam pipeline of the steam turbine is connected with the steam pipeline of the boiler body. Residual steam after the boiler drives the generator set is utilized to drive the steam turbine, and the steam turbine is used for driving the high-power fan in the boiler, thereby the energy utilization rate is effectively improved. The residual steam of the steam turbine is supplied to a heat supply network, an auxiliary steam system and a deaerator so that the energy utilization rate is further improved. A boiler draught fan and a booster fan are integrated so that the equipment efficiency is improved.

Description

A kind of unit boiler
Technical field
The utility model relates to boiler and makes the field, and in particular, the utility model is a kind of unit boiler about high-power generating.
Background technology
In the high-power generator group, all by boiler as power source.On the air channel of boiler, be typically provided with air-introduced machine and booster fan, air-introduced machine and booster fan adopt Motor Drive, because the power very big (more than the 1000KW) of air-introduced machine and booster fan, the adjustment of carrying out air quantity again is a fan speed regulation, need the frequency converter of configuration corresponding power, and powerful frequency converter price is very high, and powerful frequency converter like this designs, makes all immature at present.If not speed governing, waste of energy is very big.The steam that produces of boiler is also having residual steam for generating set operation back on the other hand, and this residual steam direct heating net temperature, pressure is all too high, needs throttling, cooling processing, causes energy waste.Therefore if can utilize boiler to drive that residual steam behind the generating set drives air-introduced machine and booster fan has very high economic worth.
Patent Office of the People's Republic of China has announced a CN2506888Y document on August 21st, 2002, name is called the control device of boiler fan, fire grate, this device is between the motor of the air blast of existing boiler, air-introduced machine and fire grate drive motors and is connected to variable-frequency governor, realizes the speed governing of boiler fan and fire grate by the frequency conversion mode.The shortcoming of this device is that boiler fan adopts motor-driven, and adopts variable-frequency governor to carry out speed governing, and therefore investment is big, and operating cost is high and cause energy waste.
Summary of the invention
Investment is big, operating cost is high and the shortcoming of energy waste, and a kind of unit boiler is provided for the usefulness Motor Drive boiler fan that exists in the solution prior art causes for the utility model, can utilize the residual steam of boiler to drive boiler fan.
The technical scheme that its technical problem that solves the utility model adopts is: the utility model comprises boiler body, generating set and is arranged on blower fan on the boiler body air channel, the jet chimney of boiler body links to each other with generating set, the drive unit of blower fan is a steam turbine, and the jet chimney of steam turbine links to each other with the jet chimney of boiler body.Utilize the residual steam driving steam turbine after Boiler Steam drives generating set, the blower fan on the Steam Turbine Driven boiler body air channel has improved energy utilization rate greatly; Utilize the intrinsic speed-regulating function of steam turbine, satisfied the speed governing requirement of boiler fan.
As preferably, steam turbine is a back pressure turbine.Back pressure turbine has simple in structure, invests little advantage.
As preferably, steam turbine connects heat supply network.The residual steam of boiler is through behind the driving steam turbine, and the steam pressure that steam turbine is discharged reduces, and just in time satisfies heat supply network to the steam pressure requirement, steam turbine is connected with heat supply network can further improves energy utilization rate.
As preferably, steam turbine connects Auxiliary Steam and oxygen-eliminating device.When steam turbine carries out speed governing to blower fan, the quantity of steam that steam turbine is discharged also changes thereupon, simultaneously Auxiliary Steam and oxygen-eliminating device also need consume a large amount of steam, and steam turbine is connected the contradiction that Auxiliary Steam and oxygen-eliminating device can be regulated steam turbine exhaust steam amount and the required quantity of steam of heat supply network; The required quantity of steam of heat supply network is little when the exhaust steam amount of steam turbine is big, steam supply Auxiliary Steam and oxygen-eliminating device that can will be unnecessary; And when the exhaust steam amount of steam turbine when the little or required quantity of steam of heat supply network is big, the exhaust steam of steam turbine is not supplied with Auxiliary Steam and oxygen-eliminating device.
As preferably, blower fan is a boiler induced-draft fan.The power of boiler induced-draft fan is very big, and needs to regulate air quantity, better embodies energy-saving effect with Steam Turbine Driven air inducing function.
As preferably, blower fan is the boiler booster fan.The power of booster fan is very big, and needs to regulate air quantity, better embodies energy-saving effect with Steam Turbine Driven air inducing function.
As preferably, blower fan is the air inducing booster fan that boiler induced-draft fan and booster fan unite two into one.Because the power of air-introduced machine and booster fan is all very big, and in an air channel, when use Motor Drive, if with air-introduced machine and booster fan unite two into one drive motor is become bigger, and cause electric motor starting and speed governing very difficult; And the driving power of steam turbine is very big, and speed governing is convenient, can satisfy air inducing booster fan that air-introduced machine and booster fan unite two into one to requirements such as driving power, startup, speed governing, thereby further improve device efficiency.
The beneficial effects of the utility model are: utilize the residual steam driving steam turbine after boiler drives generating set, use the high-power blower in the Steam Turbine Driven boiler again, can effectively improve energy utilization rate; Make full use of the acting ability of heating network steam, reduce the throttling energy loss, improve economy; The residual steam of steam turbine is supplied with heat supply network and Auxiliary Steam and oxygen-eliminating device, further improve energy utilization rate; Boiler induced-draft fan and booster fan united two into one improved device efficiency; Adopt speed governing Steam Turbine Driven air-introduced machine, be equivalent to increase and adorned frequency converter, improve the performance driving economy of air-introduced machine under various operating modes.
Description of drawings
Fig. 1 is a kind of system schematic of the utility model unit boiler.
Among the figure: 1. boiler body, 2. generating set, 3. steam turbine, 4. air inducing booster fan, 5. heat supply network, 6. Auxiliary Steam, 7. oxygen-eliminating device, 8. jet chimney, 9. boiler air channel.
The specific embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings the technical solution of the utility model is described in further detail.
Embodiment:
A kind of unit boiler of present embodiment, referring to Fig. 1, comprise boiler body 1, generating set 2, boiler body 1 links to each other with generating set 2, steam turbine 3 respectively by jet chimney 8, the air inducing booster fan 4 that air-introduced machine and booster fan unite two into one is housed on the boiler air channel 9 of boiler body 1, and air inducing booster fan 4 is driven by back pressure turbine 3; Steam turbine 3 drives generating set 2 residual steam by boiler body 1 and drives; Steam turbine 3 links to each other with heat supply network 5, Auxiliary Steam 6, oxygen-eliminating device 7 by jet chimney.
During boiler body 1 igniting just, owing to also do not have steam, steam turbine 3 does not move, and air inducing booster fan 4 does not move yet, and the intensity of a fire in the boiler body 1 is little at this moment, and also little to the demand of air, this air capacity is supplied with by electronic air-introduced machine temporarily; Through operation after a while, the steam pressure of boiler body 1 progressively increases, when steam pressure is increased to can driving steam turbine 2 and can not drive generating set 2 time, at first with steam for driving steam turbine 2, steam turbine 2 drives air inducing booster fans 4; Along with air inducing booster fan 4 starts, air quantity increases, and the intensity of a fire of boiler body 1 strengthens, and boiler body 1 enters normal operating condition, and electronic air-introduced machine is stopped transport, and steam pressure is increased to the driving requirement of satisfying generating set 2, and generating set 2 starts; The residual steam that steam turbine 3 is discharged is supplied with heat supply network 5, Auxiliary Steam 6, oxygen-eliminating device 7; Air inducing booster fan 4 needs intake is regulated with the steam pressure size variation of boiler body 1, the driving power of steam turbine 3 is changed thereupon, thereby the exhaust steam amount of steam turbine 3 is fluctuateed to some extent, the demand of 5 pairs of steam of heat supply network is also with season simultaneously, the variation of time and changing, when the demand of the exhaust steam amount of steam turbine 3 and 5 pairs of steam of heat supply network is in a basic balance, Auxiliary Steam 6, oxygen-eliminating device 7 is supplied with by other vapour source, when the exhaust steam amount of steam turbine 3 during greater than the demand of 5 pairs of steam of heat supply network, Auxiliary Steam 6, oxygen-eliminating device 7 is supplied with by the exhaust steam of steam turbine 3.
Above embodiment is one of preferred plan of the present utility model, is not that the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.

Claims (7)

1. unit boiler, comprise boiler body, generating set and be arranged on blower fan on the boiler body air channel, the jet chimney of boiler body links to each other with generating set, it is characterized in that: the drive unit of described blower fan is a steam turbine, and the jet chimney of described steam turbine links to each other with the jet chimney of boiler body.
2. a kind of unit boiler according to claim 1 is characterized in that: described steam turbine is a back pressure turbine.
3. a kind of unit boiler according to claim 1 and 2 is characterized in that: described steam turbine connects heat supply network.
4. a kind of unit boiler according to claim 1 and 2 is characterized in that: described steam turbine connects Auxiliary Steam and oxygen-eliminating device.
5. a kind of unit boiler according to claim 1 and 2 is characterized in that: described blower fan is a boiler induced-draft fan.
6. a kind of unit boiler according to claim 1 and 2 is characterized in that: described blower fan is the boiler booster fan.
7. a kind of unit boiler according to claim 1 and 2 is characterized in that: described blower fan is the air inducing booster fan that boiler induced-draft fan and booster fan unite two into one.
CN2010202257239U 2010-06-13 2010-06-13 Set boiler Expired - Fee Related CN201779640U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202257239U CN201779640U (en) 2010-06-13 2010-06-13 Set boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202257239U CN201779640U (en) 2010-06-13 2010-06-13 Set boiler

Publications (1)

Publication Number Publication Date
CN201779640U true CN201779640U (en) 2011-03-30

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Application Number Title Priority Date Filing Date
CN2010202257239U Expired - Fee Related CN201779640U (en) 2010-06-13 2010-06-13 Set boiler

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105084334A (en) * 2015-09-01 2015-11-25 湖北施尔佳肥业有限公司 Energy-saving equipment for MAP (monoammonium phosphate) production
CN112664321A (en) * 2019-10-15 2021-04-16 中国石油化工股份有限公司 Fan starting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105084334A (en) * 2015-09-01 2015-11-25 湖北施尔佳肥业有限公司 Energy-saving equipment for MAP (monoammonium phosphate) production
CN112664321A (en) * 2019-10-15 2021-04-16 中国石油化工股份有限公司 Fan starting device

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110330

Termination date: 20120613