CN207584754U - A kind of natural gas afterheat boiler for power generation system - Google Patents
A kind of natural gas afterheat boiler for power generation system Download PDFInfo
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- CN207584754U CN207584754U CN201721396403.8U CN201721396403U CN207584754U CN 207584754 U CN207584754 U CN 207584754U CN 201721396403 U CN201721396403 U CN 201721396403U CN 207584754 U CN207584754 U CN 207584754U
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Abstract
The utility model discloses a kind of natural gas afterheat boiler for power generation system, including：First high-pressure superheater and the second high-pressure superheater, interconnected pipeline are equipped with attemperator, and the first high-pressure superheater is connected with steam turbine throttle；High pressure evaporator, low pressure evaporator and low-pressure superheater, are connected with high pressure drum between high pressure evaporator and the second high-pressure superheater, low pressure drum is connected between low pressure evaporator and low-pressure superheater, and low-pressure superheater is connected with steam turbine pair valve；Platoon flash vessel, high pressure drum and low pressure drum are connected by emergency blowoff pipeline with aqueduct with platoon flash vessel.The use of cold energy can be effectively reduced between the first high-pressure superheater and the second high-pressure superheater by the way that attemperator is arranged on.It can play the role of gas-liquid separation secondly by high pressure drum and low pressure drum to ease up qi of chong channel ascending adversely tank, be conducive to adjust operating parameter respectively, and then improve degree of regulation.In addition by platoon flash vessel in order to being recycled to water.
Description
Technical field
The utility model is related to natural gas afterheat technical field of power generation, more particularly to a kind of natural gas afterheat power generation pot
Furnace system.
Background technology
Natural gas in long distance delivery process using high-pressure delivery, reach user using when need to depressurize.Therefore in gas transmission
When generally use combustion engine driving natural gas boosting machine the pressure in gas pipeline is made to maintain in certain range, in pressure reduction
In give off a large amount of hot gas, at present mainly using these hot gas come the water in heating boiler, so as to generate superheated steam, overheat
The rotation of steam drive steam turbine produces electricl energy.Under normal conditions from combustion engine discharge hot gas enter boiler, need by superheater,
Evaporator, economizer, preheater etc., are both related to heat exchange in the process, further relate to the cycle of water, and enter boiler
The amount of flue gas is unstable, needs to adjust boiler attendance parameter in real time, and whether the wherein installation of equipment, pipeline and instrument is suitable, with
And the ability of solution of emergent event, the safety to ensureing boiler are most important.
Utility model content
The purpose of this utility model is to provide a kind of natural gas afterheat boiler for power generation system, can effectively solve boiler behaviour
Make the problems such as parameter adjustment is inconvenient.
In order to solve the above technical problems, the utility model provides following technical solution：
A kind of natural gas afterheat boiler for power generation system, including：
First high-pressure superheater and the second high-pressure superheater, interconnected pipeline be equipped with attemperator, described first
High-pressure superheater is connected with steam turbine throttle；
High pressure evaporator, low pressure evaporator and low-pressure superheater, the high pressure evaporator and second high-pressure superheater
Between be connected with high pressure drum, low pressure drum, the low pressure are connected between the low pressure evaporator and the low-pressure superheater
Superheater is connected with steam turbine pair valve；
Platoon flash vessel, the high pressure drum and the low pressure drum pass through emergency blowoff pipeline and aqueduct and institute
State the connection of platoon flash vessel.
Preferably, central controller is further included, the emergency blowoff pipeline and the aqueduct are equipped with Electronic control
Valve, the central controller are connected with the motor-operated control valve.
Preferably, the high pressure drum and the low pressure drum are equipped with the safety for discharging steam when its inner overpressure
Valve.
Preferably, warning device is further included, Level monitor is equipped in the high pressure drum and the low pressure drum,
The warning device is used to send out alarm signal when the water level that the Level monitor monitors exceeds watermark threshold.
Preferably, the admission line of the steam turbine throttle and the steam turbine pair valve is equipped with emergent evacuation valve.
Preferably, the high pressure evaporator is connected with the low pressure evaporator with the platoon flash vessel.
Preferably, it further includes and is filled for carrying out the desalination deoxygenation of desalination and deoxygenation to the water entered in the low pressure drum
It puts.
Compared with prior art, above-mentioned technical proposal has the following advantages：
A kind of natural gas afterheat boiler for power generation system provided by the utility model, when the second high-pressure superheater gas outlet
The temperature of discharge is excessively high, has exceeded the intake air temperature of steam turbine, is then cooled down by attemperator, due to the second high-pressure superheater
The temperature of gas outlet well below the first high-pressure superheater gas outlet temperature, by the way that attemperator is arranged on the first high pressure superheater
The use of cold energy can be reduced between device and the second high-pressure superheater.Gas-liquid point can be played secondly by high pressure drum and low pressure drum
Effect from gentle qi of chong channel ascending adversely tank, and since the operating parameter difference of the second high-pressure superheater and low-pressure superheater is larger,
By the high pressure drum and low pressure drum set respectively, be conducive to adjust operating parameter respectively, and then improve degree of regulation.In addition
When steam turbine breaks down, and needs in time to discharge the water in boiler, emergency blowoff pipeline and aqueduct can be opened by water
It is delivered to platoon flash vessel and carries out gas-liquid separation, in order to be recycled to water.
Description of the drawings
It, below will be to embodiment or existing in order to illustrate more clearly of the utility model or technical solution of the prior art
Attached drawing is briefly described needed in technology description, it should be apparent that, the accompanying drawings in the following description is that this practicality is new
Some embodiments of type, for those of ordinary skill in the art, without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
A kind of natural gas afterheat boiler for power generation system that Fig. 1 is provided by a kind of specific embodiment of the utility model
Structure diagram.
Specific embodiment
It is understandable in order to which the above-mentioned purpose of the utility model, feature and advantage is enable to become apparent, it is right below in conjunction with the accompanying drawings
Specific embodiment of the present utility model is described in detail.
Detail is elaborated in the following description in order to fully understand the utility model.But the utility model can
Implemented with a variety of different from other manner described here, those skilled in the art can be without prejudice to the utility model connotation
In the case of do similar popularization.Therefore the utility model is not limited by following public specific embodiment.
It please refers to Fig.1, Fig. 1 is generated electricity by a kind of natural gas afterheat that a kind of specific embodiment of the utility model provides and used
The structure diagram of boiler system.
A kind of specific embodiment of the utility model provides a kind of natural gas afterheat boiler for power generation system, including：
First high-pressure superheater and the second high-pressure superheater, interconnected pipeline be equipped with attemperator 1, the first high-pressure superheater and
Steam turbine throttle connects；High pressure evaporator, low pressure evaporator and low-pressure superheater, high pressure evaporator and the second high-pressure superheater
Between be connected with high pressure drum 2, low pressure drum 3, low-pressure superheater and vapour are connected between low pressure evaporator and low-pressure superheater
Turbine pair valve connects；Platoon flash vessel 4, high pressure drum 2 and low pressure drum 3 by emergency blowoff pipeline and aqueduct and
Platoon flash vessel 4 connects.
Using boiler system provided in this embodiment, when the temperature of the second high-pressure superheater gas outlet discharge is excessively high, exceed
The intake air temperature of steam turbine, then cooled down by attemperator 1, since the temperature of the second high-pressure superheater gas outlet is much low
Temperature in the first high-pressure superheater gas outlet, by the way that attemperator 1 is arranged on the first high-pressure superheater and the second high pressure superheater
The use of cold energy can be effectively reduced between device.Gas-liquid separation can be played secondly by high pressure drum 2 and low pressure drum 3 to ease up qi of chong channel ascending adversely
The effect of tank, and since the operating parameter difference of the second high-pressure superheater and low-pressure superheater is larger, by setting respectively
The high pressure drum 2 and low pressure drum 3 put, are conducive to adjust operating parameter respectively, and then improve degree of regulation.In addition work as steam turbine
It breaks down, when needing in time to discharge the water in boiler, emergency blowoff pipeline and aqueduct can be opened, water is delivered to company
It arranges flash vessel 4 and carries out gas-liquid separation, in order to be recycled to water.
Further, central controller is further included, emergency blowoff pipeline and aqueduct are equipped with motor-operated control valve, center
Controller is connected with motor-operated control valve.Wherein can motor-operated control valve be opened, with the face of improving by the monitoring of central controller in time
To the reaction speed of accident, and then relevant device is avoided the damage caused by draining not in time occur.
In order to improve the safety of boiler system, in the present embodiment, high pressure drum 2 and low pressure drum 3 are equipped with when it
The safety valve for discharging steam during inner overpressure.
In one embodiment of the utility model, warning device is further included, is all provided in high pressure drum 2 and low pressure drum 3
There is Level monitor, warning device is used to send out alarm signal when the water level that Level monitor monitors exceeds watermark threshold
Number.Therefore it can avoid occurring the too high or too low situation appearance of water level in high pressure drum 2 and low pressure drum 3, and then improve and ensure
It is worked normally.
In one embodiment of the utility model, the admission line of steam turbine throttle and steam turbine pair valve is equipped with
Emergent evacuation valve 5.If steam turbine stops in emergency, open emergent evacuation valve 5 and discharge gas, wherein emergent evacuation valve 5
It is preferred that the control valve of electronic class.
In order to further improve the utilization rate of water resource, in the present embodiment, high pressure evaporator and low pressure evaporator and
Platoon flash vessel 4 connects.When boiler system parking maintenance occurs or operational load is excessive, by high pressure evaporator and low pressure evaporator
Interior catchmenting drains into platoon flash vessel 4.
In one embodiment of the utility model, further include for enter low pressure drum 3 in water carry out desalination and
The desalination deaerating plant of deoxygenation.Wherein desalination deaerating plant includes oxygen-eliminating device 6 and desalter, and desalter is by the water after desalination
It is delivered in oxygen-eliminating device 6 and carries out deoxygenation processing.Desalination and deoxidation treatment are carried out by the water entered in low pressure drum 3, it is ensured that
The normal operation of boiler system.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
A kind of natural gas afterheat boiler for power generation system provided by the utility model is described in detail above.This
It applies specific case in text to be expounded the principle and embodiment of the utility model, the explanation of above example is
It is used to help understand the method and its core concept of the utility model.It should be pointed out that the ordinary skill people for the art
Member for, under the premise of the utility model principle is not departed from, can also to the utility model, some improvement and modification can also be carried out, this
A little improvement and modification are also fallen into the protection domain of the utility model claims.The foregoing description of the disclosed embodiments,
Professional and technical personnel in the field is enable to realize or using the utility model.To a variety of modifications of these embodiments to this field
It will be apparent for professional technician, the general principles defined herein can not depart from the utility model
In the case of spirit or scope, realize in other embodiments.Therefore, the utility model is not intended to be limited to shown in this article
These embodiments, and it is to fit to the most wide range consistent with the principles and novel features disclosed herein.
Claims (7)
1. a kind of natural gas afterheat boiler for power generation system, which is characterized in that including：
First high-pressure superheater and the second high-pressure superheater, interconnected pipeline are equipped with attemperator, first high pressure
Superheater is connected with steam turbine throttle；
High pressure evaporator, low pressure evaporator and low-pressure superheater, between the high pressure evaporator and second high-pressure superheater
High pressure drum is connected with, low pressure drum, the low area overheat are connected between the low pressure evaporator and the low-pressure superheater
Device is connected with steam turbine pair valve；
Platoon flash vessel, the high pressure drum and the low pressure drum pass through emergency blowoff pipeline and aqueduct and the company
Arrange flash vessel connection.
2. natural gas afterheat boiler for power generation system according to claim 1, which is characterized in that further include central control
Device, the emergency blowoff pipeline and the aqueduct are equipped with motor-operated control valve, the central controller and the electronic control
Valve connection processed.
3. natural gas afterheat boiler for power generation system according to claim 2, which is characterized in that the high pressure drum and institute
It states low pressure drum and is equipped with the safety valve for discharging steam when its inner overpressure.
4. natural gas afterheat boiler for power generation system according to claim 1, which is characterized in that warning device is further included,
Level monitor is equipped in the high pressure drum and the low pressure drum, the warning device is used for when the water level monitoring
Device monitoring to water level exceed watermark threshold when send out alarm signal.
5. natural gas afterheat boiler for power generation system according to any one of claims 1 to 4, which is characterized in that the vapour
The admission line of turbine throttle and the steam turbine pair valve is equipped with emergent evacuation valve.
6. natural gas afterheat boiler for power generation system according to claim 5, which is characterized in that the high pressure evaporator and
The low pressure evaporator is connected with the platoon flash vessel.
7. natural gas afterheat boiler for power generation system according to claim 6, which is characterized in that further include for entering
Water in the low pressure drum carries out the desalination deaerating plant of desalination and deoxygenation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721396403.8U CN207584754U (en) | 2017-10-24 | 2017-10-24 | A kind of natural gas afterheat boiler for power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721396403.8U CN207584754U (en) | 2017-10-24 | 2017-10-24 | A kind of natural gas afterheat boiler for power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207584754U true CN207584754U (en) | 2018-07-06 |
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ID=62729401
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721396403.8U Active CN207584754U (en) | 2017-10-24 | 2017-10-24 | A kind of natural gas afterheat boiler for power generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612287A (en) * | 2019-01-22 | 2019-04-12 | 山东钢铁集团日照有限公司 | A kind of device for improving sintering exhaust-heat boiler and boiling furnace and starting efficiency |
-
2017
- 2017-10-24 CN CN201721396403.8U patent/CN207584754U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612287A (en) * | 2019-01-22 | 2019-04-12 | 山东钢铁集团日照有限公司 | A kind of device for improving sintering exhaust-heat boiler and boiling furnace and starting efficiency |
| CN109612287B (en) * | 2019-01-22 | 2024-02-27 | 山东钢铁集团日照有限公司 | Device for improving boiler boiling and starting efficiency of sintering waste heat boiler |
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