CN207715199U - The heating system at plant area of thermal power plant heating heat-exchange station - Google Patents
The heating system at plant area of thermal power plant heating heat-exchange station Download PDFInfo
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- CN207715199U CN207715199U CN201721886542.9U CN201721886542U CN207715199U CN 207715199 U CN207715199 U CN 207715199U CN 201721886542 U CN201721886542 U CN 201721886542U CN 207715199 U CN207715199 U CN 207715199U
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- steam
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- air intake
- exchange station
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Abstract
The utility model discloses a kind of heating system at plant area of thermal power plant heating heat-exchange station, including starting trouble, steam turbine, auxiliary steam header and heat exchange station, the venthole of starting trouble is connected to by Boiler Steam pipe with the air intake of auxiliary steam header, the level Four steam extraction venthole of steam turbine is connected to by level Four steam extraction head with the air intake of auxiliary steam header, it further includes attemperator, desuperheat water source, and the venthole of auxiliary steam header is connected to by air vent pipework with the air intake of attemperator.Advantage is：The utility model provides a kind of economic and practical heating vapour source for the long-term heating of plant area, realizes the purpose of plant area's energy saving in running consumption reduction by the way that steam turbine Pyatyi steam extraction is introduced plant area's heating heating system；And the utility model simplifies high-quality steam and is transformed into the more complicated pressure and temperature reducing equipment used when low-quality steam, saves initial investment, reduces space, longtime running remarkable in economical benefits.
Description
Technical field：
The utility model belongs to power plant's heating system technical field more particularly to a kind of plant area of thermal power plant heating heat-exchange station
Heating system.
Background technology：
The thermal power plant of northern area need to consider unit starting and winter construction in first stage of construction or power station unit initial start stage
Heating problem, need certain hot vapour source to be first sent into auxiliary steam header, then steam is dispensed by auxiliary steam header.Start pot
For stove because its assembling is convenient, the construction period is short, generally both as the startup vapour source of Power Plant, is also used as constructin phase plant area's heating
Hot vapour source.Since the steam parameter that unit starting needs is higher, usually require that temperature T >=350 DEG C of steam, pressure P >=
1MPa, and the parameter of heating vapour is generally 143 DEG C of T ≈, P ≈ 0.4MPa, so needing the height for generating auxiliary steam header
Parameter steam is converted to the low parameter steam that suitable heating uses.
Conventional design is at present：Vapour source is provided for auxiliary steam header by starting trouble and the steam extraction of steam turbine level Four, is assisted
The steam that steam header comes out draws after temperature-decreased pressure reducer carries out pressure and temperature reducing and is connected to plant area's heat exchange station.The disadvantage is that：It need to be arranged and subtract
Temperature-decreased pressure reducer, not only system is relative complex, also adds cost of investment and the arrangement space of temperature-decreased pressure reducer；When power plant's capital construction is applied
After work, in follow-up very long operational process, starting trouble is needed to run for a long time, since starting trouble design is not
It is designed for longtime running, corresponding environmental protection facility is not perfect, and in starting trouble operational process, damage ratio is more serious；And mesh
Most of preceding starting trouble is oil burning boiler, and long-play expense is also relatively high；In addition, to high-quality steam pressure and temperature reducing,
Energy loss problem is will produce, longtime running is uneconomical.
Utility model content：
The purpose of this utility model is to provide a kind of energy-saving, economic and practical plant area of thermal power plant heating heat-exchange stations
Heating system.
The utility model is implemented by following technical solution：
The heating system at plant area of thermal power plant heating heat-exchange station comprising starting trouble, steam turbine, auxiliary steam header and change
The venthole of heat stations, the starting trouble is connected to by Boiler Steam pipe with the air intake of the auxiliary steam header, the vapour
The level Four steam extraction venthole of turbine is connected to by level Four steam extraction head with the air intake of the auxiliary steam header, further includes subtracting
The venthole at warm device, desuperheat water source, the auxiliary steam header is connected to by air vent pipework with the air intake of the attemperator,
The venthole of the attemperator is connected to by desuperheated system pipe with the air intake of the heat exchange station, the Pyatyi steam extraction of the steam turbine
Venthole is connected to by Pyatyi steam extraction head with the air intake of the heat exchange station, and the water inlet of the attemperator passes through desuperheat water pipe
It is connected to the desuperheat water source.
Further, it is equipped with Boiler Steam regulating valve on the Boiler Steam pipe, is set on the level Four steam extraction head
There is level Four extraction control valve, auxiliary steam regulating valve is equipped on the air vent pipework, is equipped on the desuperheated system pipe
Desuperheated system regulating valve is equipped with Pyatyi extraction control valve on the Pyatyi steam extraction head, is equipped with and subtracts on the desuperheat water pipe
Warm water regulating valve.
The advantages of the utility model：
The utility model is taken out in Thermal Power Plant Construction initial stage or power station unit initial start stage by starting trouble and steam turbine level Four
Vapour joint provides vapour source, after unit normal operation, is switched to and is individually for heat exchange station offer vapour source by steam turbine Pyatyi steam extraction, keep away
Exempt to use energy loss problem caused by high-quality steam always.The utility model by steam turbine Pyatyi steam extraction by introducing factory
Heating heating system in area's provides a kind of economic and practical heating vapour source for the long-term heating of plant area, realizes plant area's energy saving in running
The purpose of consumption reduction；And the utility model simplifies high-quality steam and is transformed into used when low-quality steam more complicated and subtracts
Warm pressure regulating equipment, saves initial investment, reduces space, longtime running remarkable in economical benefits.
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, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the system schematic of the utility model.
In figure：Starting trouble 1, steam turbine 2, auxiliary steam header 3, attemperator 4, desuperheat water source 5, heat exchange station 6, boiler steam
Steam pipe 7, level Four steam extraction head 8, air vent pipework 9, desuperheated system pipe 10, desuperheat water pipe 11, Pyatyi steam extraction head 12, boiler steam
Steam control valve 13, level Four extraction control valve 14, auxiliary steam regulating valve 15, desuperheated system regulating valve 16, Desuperheating water regulating valve 17,
Pyatyi extraction control valve 18.
Specific implementation mode：
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
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 embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment 1：
The heating system at plant area of thermal power plant heating heat-exchange station as shown in Figure 1 comprising starting trouble 1, steam turbine 2, auxiliary
Help steam header 3 and heat exchange station 6, the air intake that the venthole of starting trouble 1 passes through Boiler Steam pipe 7 and auxiliary steam header 3
Connection, the level Four steam extraction venthole of steam turbine 2 are connected to by level Four steam extraction head 8 with the air intake of auxiliary steam header 3, also
Including attemperator 4, desuperheat water source 5, the venthole of auxiliary steam header 3 is connected by the air intake of air vent pipework 9 and attemperator 4
Logical, the venthole of attemperator 4 is connected to by desuperheated system pipe 10 with the air intake of heat exchange station 6, and the Pyatyi steam extraction of steam turbine 2 goes out vapour
Mouth is connected to by Pyatyi steam extraction head 12 with the air intake of heat exchange station 6, and the water inlet of attemperator 4 passes through desuperheat water pipe 11 and desuperheat
Water source 5 is connected to.
It is equipped with Boiler Steam regulating valve 13 on Boiler Steam pipe 7, level Four extraction regulation is equipped on level Four steam extraction head 8
Valve 14 is equipped with auxiliary steam regulating valve 15 on air vent pipework 9, and desuperheated system regulating valve is equipped on desuperheated system pipe 10
16, it is equipped with Pyatyi extraction control valve 18 on Pyatyi steam extraction head 12, Desuperheating water regulating valve 17 is equipped on desuperheat water pipe 11, uses
In adjusting attemperation water flow.
Operation principle：
Thermal power plant in first stage of construction or power station unit initial start stage, by starting trouble 1 and steam turbine 2 level Four steam extraction supplemented by
Help steam header 3 provide vapour source, due to temperature T >=350 DEG C of the level Four steam extraction of Boiler Steam and steam turbine 2, pressure P >=
1MPa, and the parameter of heating vapour is generally 143 DEG C of T ≈, P ≈ 0.4MPa, so the steam that auxiliary steam header 3 comes out needs
After attemperator 4 carries out desuperheat, draws and be connected to plant area's heat exchange station.Due to the steam after 4 desuperheat of attemperator, temperature can be down to T≤
280 DEG C, but pressure is constant, so the bearing capacity of heat exchange station correlation heat transmission equipment need to be designed by this pressure value.
Since the main body system of steam turbine 2 can provide the heating steam of different parameters quality, after unit normal operation, vapour
Turbine 2 will produce a large amount of Pyatyi steam extraction, and because of temperature T≤280 DEG C of the Pyatyi steam extraction of steam turbine 2, pressure P ≈ 0.4MPa,
It is close with the quality of heating vapour, so pressure and temperature reducing is needed not move through, so at this point, being switched to the Pyatyi steam extraction by steam turbine 2
It is individually for heat exchange station 6 and vapour source is provided.By Boiler Steam regulating valve 13, level Four extraction control valve 14, auxiliary steam regulating valve 15, subtract
Warm steam control valve 16 and Desuperheating water regulating valve 17 are all closed, and Pyatyi extraction control valve 18 is opened, you can realize cutting for vapour source
It changes.
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 domain within.
Claims (2)
1. the heating system at plant area of thermal power plant heating heat-exchange station comprising starting trouble, steam turbine, auxiliary steam header and heat exchange
It stands, the venthole of the starting trouble is connected to by Boiler Steam pipe with the air intake of the auxiliary steam header, the steamer
The level Four steam extraction venthole of machine is connected to by level Four steam extraction head with the air intake of the auxiliary steam header, which is characterized in that
It further includes attemperator, desuperheat water source, and the venthole of the auxiliary steam header passes through air vent pipework and the attemperator
Air intake is connected to, and the venthole of the attemperator is connected to by desuperheated system pipe with the air intake of the heat exchange station, the steamer
The Pyatyi steam extraction venthole of machine is connected to by Pyatyi steam extraction head with the air intake of the heat exchange station, the water inlet of the attemperator
It is connected to the desuperheat water source by desuperheat water pipe.
2. the heating system at plant area of thermal power plant heating heat-exchange station according to claim 1, which is characterized in that in the boiler
Steam pipe is equipped with Boiler Steam regulating valve, level Four extraction control valve is equipped on the level Four steam extraction head, in the auxiliary
Steam pipe is equipped with auxiliary steam regulating valve, and desuperheated system regulating valve is equipped on the desuperheated system pipe, is taken out in the Pyatyi
Vapour main pipe is equipped with Pyatyi extraction control valve, and Desuperheating water regulating valve is equipped on the desuperheat water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721886542.9U CN207715199U (en) | 2017-12-28 | 2017-12-28 | The heating system at plant area of thermal power plant heating heat-exchange station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721886542.9U CN207715199U (en) | 2017-12-28 | 2017-12-28 | The heating system at plant area of thermal power plant heating heat-exchange station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207715199U true CN207715199U (en) | 2018-08-10 |
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ID=63051163
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721886542.9U Active CN207715199U (en) | 2017-12-28 | 2017-12-28 | The heating system at plant area of thermal power plant heating heat-exchange station |
Country Status (1)
| Country | Link |
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| CN (1) | CN207715199U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513165A (en) * | 2019-09-04 | 2019-11-29 | 深圳万润节能有限公司 | A kind of cold, heat and electricity triple supply distributed energy resource system |
-
2017
- 2017-12-28 CN CN201721886542.9U patent/CN207715199U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513165A (en) * | 2019-09-04 | 2019-11-29 | 深圳万润节能有限公司 | A kind of cold, heat and electricity triple supply distributed energy resource system |
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