CN206668341U - Thermal power plant feed-water pump arrangement - Google Patents
Thermal power plant feed-water pump arrangement Download PDFInfo
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- CN206668341U CN206668341U CN201720377698.8U CN201720377698U CN206668341U CN 206668341 U CN206668341 U CN 206668341U CN 201720377698 U CN201720377698 U CN 201720377698U CN 206668341 U CN206668341 U CN 206668341U
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- feed pump
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Abstract
The utility model is thermal power plant feed-water pump arrangement, including oxygen-eliminating device, feed pump and pressure charging system, the output end of the oxygen-eliminating device connects with the feed pump pipeline, the pressure charging system includes the motor and change gear box being sequentially connected with, the change gear box connects the input of the feed pump, the output end of the feed pump is connected with two water pipelines in parallel, feed water pump output terminal water pipeline in parallel, a feed pump can be made to meet the needs of two water systems, the cost of feed pump in initial cost can so be saved, and corresponding reduction is taken up an area；In addition, change gear box is driven to drive feed pump by motor, it is possible to increase the operational efficiency and safety coefficient of system, to reduce maintenance and maintenance cost.
Description
Technical field
It the utility model is related to power plant's water supply system technical field, more particularly to thermal power plant feed-water pump arrangement knot
Structure.
Background technology
Power industry is the important foundation industry of national economy, and the emphasis of national economic development strategy and production in advance
Industry.With the sustainable and healthy development of China's economy, national installed capacity also increases.According to August in 2009 16 days from the whole nation
The data that work about electric power meeting obtains, China's capacity of installed generator have broken through 800,000,000 kilowatts, wherein 75% comes from thermal power station and core
The Turbo-generator Set in power station.The year two thousand twenty is expected, the capacity of installed generator in China is up to 1,200,000,000 kilowatts, and wherein thermoelectricity accounts for
65% or so.In the primary energy structure in China, the ratio shared by coal resources is maximum, and about 75.87%, this energy knot
Structure feature certainly will influence ratio shared during coal fired power generation generates electricity in China.According to statistics, generating fire coal in China's accounts for coal total output ratio
65% or so of example, this situation are expected to continue for quite a long time.Because coal resource is non-renewable energy resources,
Consider for offspring, can not waste and exhaust, so it is exactly a urgent task to improve coal using energy source level, but at present
China's fired power generating unit is mainly manifested in there is problems：Consume that coal is low, ratio shared by fired power generating unit of efficiency high is low, it is conventional
Small thermal power unit ratio is excessive, and single-machine capacity is less than normal, although by " above pressing greatly small " policy, closes a large amount of of below 200MW
Unit, also a certain distance compared with international most advanced level.
In order to meet that unit starting flexibly requires, electrically driven feed pump is commonly provided with power plant.Existed according to electrically driven feed pump
Function distinguishing in unit, it is divided into start pump and startup/stand-by pump two kinds.
(1) pump is started：It is acted on only in unit starting process, meets flow and pressure requirements during unit starting.Certain
After being switched to heat pump under load, that is, cut off, exit water supply system.
(2) startup/stand-by pump：It acts on the requirement that not only meet flow and pressure during unit starting.Meanwhile in unit
In running, in stand-by heat, when a steam feed pump breaks down, it can be transported side by side with another steam feed pump
OK, unit is maintained to be run under as far as possible high load.
China has put into operation or surpassed in the 600MW built at present（It is super）Critical pure condensate unit, from system is simplified, reduce initial cost
Angle, electrodynamic pump can only consider its startup function or cancellation electrically driven feed pump, therefore in order to which summation considers system and initial cost
The problem of, it is necessary to a kind of new suitable feed-water pump.
Utility model content
The purpose of this utility model is in view of the shortcomings of the prior art, providing thermal power plant feed-water pump arrangement.
Thermal power plant feed-water pump arrangement, including oxygen-eliminating device, feed pump and pressure charging system, the oxygen-eliminating device
Output end connects with the feed pump pipeline, and the pressure charging system includes the motor and change gear box being sequentially connected with, described
Change gear box connects the input of the feed pump, and the output end of the feed pump is connected with two water pipelines in parallel.
In one of the embodiments, the change gear box is high pulling torque change gear box.
In one of the embodiments, the feed pump is the startup pump of 25%-30% capacity.
In one of the embodiments, it is described feedwater pump output terminal connection two water pipelines in parallel be communicated to difference to
Water system.
In summary, thermal power plant feed-water pump arrangement, including oxygen-eliminating device, feed pump and pressure charging system, institute
The output end for stating oxygen-eliminating device connects with the feed pump pipeline, and the pressure charging system includes motor and the gear teeth being sequentially connected with
Roller box, the change gear box connect the input of the feed pump, the output end of the feed pump be connected with two it is in parallel
Water pipeline, feedwater pump output terminal water pipeline in parallel, can make a feed pump meet the needs of two water systems, such as
This can save the cost of feed pump in initial cost, and corresponding reduction is taken up an area；In addition, gear teeth is driven by motor
Roller box drives feed pump, it is possible to increase the operational efficiency and safety coefficient of system, reduces maintenance and maintenance cost.
Brief description of the drawings
Fig. 1 is the structural representation of the thermal power plant feed-water pump arrangement of an embodiment.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is described in further detail to the utility model.
As shown in figure 1, thermal power plant feed-water pump arrangement, including oxygen-eliminating device, feed pump and pressure charging system, institute
The output end for stating oxygen-eliminating device connects with the feed pump pipeline, and the pressure charging system includes motor and the gear teeth being sequentially connected with
Roller box, the change gear box connect the input of the feed pump, the output end of the feed pump be connected with two it is in parallel
Water pipeline.Feed water pump output terminal water pipeline in parallel, a feed pump can be made to meet the needs of two water systems, such as
This can save the cost of feed pump in initial cost, and corresponding reduction is taken up an area；In addition, gear teeth is driven by motor
Roller box drives feed pump, it is possible to increase the operational efficiency and safety coefficient of system, reduces maintenance and maintenance cost.
In one of the embodiments, the change gear box is high pulling torque change gear box.Change gear box is by electricity
The power of motivation, power is switched to by torsional forces by itself speed change and gives startup pump, it is possible to increase the energy conversion efficiency of motor.
In one of the embodiments, the feed pump is the startup pump of 25%-30% capacity.Using activated vapor boiler,
Configuration feed pump can meet boiler startup requirement for the startup pump of 25%-30% capacity, and can save equipment investment cost.
In one of the embodiments, it is described feedwater pump output terminal connection two water pipelines in parallel be communicated to difference to
Water system.Startup pump by the use of a feed pump as two parallel systems, simplifies system architecture, and saved in start-up course
Station service.
A specific embodiment of the present utility model is the foregoing is only, but architectural feature of the present utility model is not limited to
This, for any those skilled in the art in field of the present utility model, the change or modification made are encompassed by this practicality newly
In the scope of the claims of type.
Claims (4)
1. thermal power plant feed-water pump arrangement, it is characterised in that：Including oxygen-eliminating device, feed pump and pressure charging system, institute
The output end for stating oxygen-eliminating device connects with the feed pump pipeline, and the pressure charging system includes motor and the gear teeth being sequentially connected with
Roller box, the change gear box connect the input of the feed pump, the output end of the feed pump be connected with two it is in parallel
Water pipeline.
2. thermal power plant feed-water pump arrangement according to claim 1, it is characterised in that：The change gear box
For high pulling torque change gear box.
3. thermal power plant feed-water pump arrangement according to claim 1, it is characterised in that：The feed pump is
The startup pump of 25%-30% capacity.
4. thermal power plant feed-water pump arrangement according to claim 1, it is characterised in that：The feed pump output
Two water pipelines in parallel of end connection are communicated to different water supply systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720377698.8U CN206668341U (en) | 2017-04-12 | 2017-04-12 | Thermal power plant feed-water pump arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720377698.8U CN206668341U (en) | 2017-04-12 | 2017-04-12 | Thermal power plant feed-water pump arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206668341U true CN206668341U (en) | 2017-11-24 |
Family
ID=60381176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720377698.8U Active CN206668341U (en) | 2017-04-12 | 2017-04-12 | Thermal power plant feed-water pump arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206668341U (en) |
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2017
- 2017-04-12 CN CN201720377698.8U patent/CN206668341U/en active Active
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