CN204721269U - The intensive frequency conversion system of a kind of station-service - Google Patents
The intensive frequency conversion system of a kind of station-service Download PDFInfo
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- CN204721269U CN204721269U CN201520429841.4U CN201520429841U CN204721269U CN 204721269 U CN204721269 U CN 204721269U CN 201520429841 U CN201520429841 U CN 201520429841U CN 204721269 U CN204721269 U CN 204721269U
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Abstract
The utility model provides the intensive frequency conversion system of a kind of station-service, comprising: variable-frequency power generation unit, and it comprises: the steam turbine of generator for driving it to rotate, and both are arranged on same axis; Steam Turbine, its hot arc is communicated with by jet chimney with steam turbine, for the driving of steam turbine provides steam; Frequency conversion bus and using electricity system, generator is connected with using electricity system by frequency conversion bus.The intensive frequency conversion equipment of station-service of the present utility model utilizes the speed governing steam turbine drive electrical generators arranged separately to provide frequency conversion station service, drives powerful device, reduces station service power consumption rate, improves economic benefit; Solve the problems such as traditional frequency conversion technical costs is high, poor reliability.
Description
Technical field
The utility model relates to frequency conversion field, is specifically related to a kind of high-power for power plant subsidiary engine equipment be concentrated the intensive frequency conversion system of the station-service of frequency conversion.
Background technology
In the course of work in thermal power plant, water is heated in the boiler and becomes steam, and steam pushing turbine rotates, and drive electrical generators rotates, and converts the chemical energy of fuel to electric energy.In the process of generating, a large amount of Pumps & Fans that thermal power plant is equipped with etc. rotate subsidiary engine to be needed to consume a large amount of electric energy.
The high-power subsidiary engine equipment (water supply pump, blower fan etc.) of current thermal power plant adopts traditional distributing frequency conversion, namely every platform equipment is equipped with frequency converter separately, water pump or blower motor frequency is changed to reach, thus change the rotating speed of water pump or blower fan, improve its operational efficiency, reach energy-saving and emission-reduction object.Its subject matter is that cost is high, poor reliability.
Utility model content
The utility model proposes the intensive frequency conversion system of a kind of station-service, existing power plant power consumption rate high, single subsidiary engine converter technique cost be high to solve, the problem of poor reliability.
The technical solution of the utility model is achieved in that
The intensive frequency conversion system of a kind of station-service, comprising: variable-frequency power generation unit, comprising: generator and the steam turbine for driving it to rotate, both are arranged on same axis; Steam Turbine, its hot arc is communicated with by jet chimney with steam turbine, for the driving of steam turbine provides steam; Frequency conversion bus and using electricity system, generator is connected with using electricity system by frequency conversion bus.
As further improvement of the utility model, steam turbine is the steam turbine of adjustable speed.
As further improvement of the utility model, also comprise: for the Air-Cooling Island of the exhaust steam after condensing turbine acting, be connected by jet chimney with steam turbine.
The beneficial effects of the utility model are as follows:
The intensive frequency conversion equipment of station-service of the present utility model utilizes the speed governing steam turbine drive electrical generators arranged separately to provide frequency conversion station service, drives powerful device, reduces station service power consumption rate, improves economic benefit; Solve the problems such as traditional frequency conversion technical costs is high, poor reliability; Solve the problem of Air-cooled Unit in summer due to high back pressure simultaneously, limit exerting oneself of the unit that generates electricity by way of merging two or more grid systems, thus improve the generated output of grid-connected unit; Significantly can reduce gross coal consumption rate, increase energy output, technical security is reliable, and obvious economic, is applicable to each high-power station.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the intensive frequency conversion system of station-service in illustrative embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, be the structural representation of the intensive frequency conversion system of station-service in some embodiments.
The intensive frequency conversion equipment of station-service in illustrative embodiment, comprising: variable-frequency power generation unit, Steam Turbine, frequency conversion bus 4 and using electricity system; Variable-frequency power generation unit comprises: generator 1 and the steam turbine 2 for driving it to rotate, and both are arranged on same axis 3; The hot arc of Steam Turbine is communicated with by jet chimney with steam turbine 2, for the driving of steam turbine 2 provides steam; Generator 1 is connected with using electricity system by frequency conversion bus 4.Steam turbine 2 drive electrical generators 1 rotates generating, by changing the rotating speed of steam turbine 2, the generating frequency of corresponding change generator 1.
Preferably, steam turbine 2 is the steam turbine of adjustable speed.
The intensive frequency conversion equipment of station-service in illustrative embodiment, also comprises: the Air-Cooling Island 5 of the exhaust steam after doing work for condensing turbine 2, is connected by jet chimney with steam turbine 2; Variable-frequency power generation unit finishes the exhaust steam after merit, by Air-Cooling Island 5 wire back the former gas extraction system of factory realize carbonated drink reclaim.
In embodiment, Steam Turbine is that power plant generates electricity by way of merging two or more grid systems power generator turbine, and the work vapour source of variable-frequency power generation unit derives from the hot arc steam of the intermediate pressure cylinder of Steam Turbine.Number in the figure 10,20,30 represents high pressure cylinder, intermediate pressure cylinder, the base pressure cylinder of main steam turbine respectively.In figure, filled arrows represents that steam moves towards, and hollow arrow represents the trend producing electricity.
The surplus steam of power plant is used to do work to variable-frequency power generation unit, the steam finishing merit returns original system by Air-Cooling Island 5 and circulates, and the electricity produced after the acting of variable-frequency power generation unit acts on the multiple highly energy-consuming equipment of power plant by the original station service electrical system of frequency conversion bus 4 and power plant simultaneously.The quick switching of duplex feeding system, when a road electric power system goes wrong, can be switched to another road electric power system fast, guarantee that the power supply of equipment is normal.As when variable-frequency power generation unit is due to himself system problem accidental shutdown; frequency conversion bus will to be switched to 0 second time and to be powered by power frequency supply by the quick switching of duplex feeding system; ensure that running device on this section of bus is still normal to run, the unit that ensures to generate electricity by way of merging two or more grid systems is unaffected.
The intensive converter technique of station-service is in power plant, arrange Small Turbine generating set speed governing variable-frequency power generation, for the high pressure subsidiary engines such as electrically driven feed pump, condensate pump, blower fan are powered and frequency conversion, improve power plant's power supply capacity, improve the efficiency of the powerful devices such as electrically driven feed pump, condensate pump, blower fan.Frequency conversion Turbine Steam source is main frame hot arc steam, and its steam discharge directly enters main frame steam discharge equipment.Generator 1 line voltage no longer establishes transformer by station-service high voltage bus design (6KV or 10KV), only establish row swithes, the same period automatics, judging accident switch, the little bus of frequency conversion and protective device etc.
The intensive converter technique of station-service is mainly for the frequent degree of depth peak regulation of domestic Large-scale machine set, during underload, subsidiary engine spare capacity is large, power consumption loss designs greatly, mainly under 80% load, perform converter technique based on unit operation, therefore concerning the Air-Cooling Island of unit, steam total amount is in rated condition, and unit gets back to power frequency operation when 80% load operation, the original station service electrical system of the electricity that variable-frequency power generation unit sends and power plant can paired running, jointly provides station service.When summer, variable-frequency power generation unit load (more than 80% load) is by air cooling back pressure parameter to adjust its energy output, when generate electricity by way of merging two or more grid systems unit back pressuce height time variable-frequency power generation unit energy output reduce, the original station service electrical system of power plant can be used, station service is provided, otherwise equally.Because variable-frequency power generation unit steam discharge directly returns main frame steam discharge, therefore the impact on back pressure is not produced on unit entirety.Therefore be station service power consumption rate difference when large load operation in summer.
General thermal power plant particularly Air-cooled Unit, boiler capacity has the remaining sum of 5%--10%, has 9-10 month when rated condition generates electricity, and also can drop into the intensive converter technique of station-service and run.In economy, the intensive converter technique of station-service, according to Controlling Auxiliaries in Power Plants situation access frequency conversion, can make station service power consumption rate drop to 3-4% by 8-9%.Technology of the present utility model is applicable to the electricity power enterprise of heating system, and chemical industry, cement, iron and steel, weaving etc. need the industry of heating power power, and the other industry that can recycle that has surplus heat.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (3)
1. the intensive frequency conversion system of station-service, is characterized in that, comprising:
Variable-frequency power generation unit, comprising: generator (1) and the steam turbine (2) for driving it to rotate, and both are arranged on same axis (3);
Steam Turbine, its hot arc is communicated with by jet chimney with described steam turbine (2), for the driving of described steam turbine (2) provides steam;
Frequency conversion bus (4) and using electricity system, described generator (1) is connected with described using electricity system by described frequency conversion bus (4).
2. the intensive frequency conversion system of station-service according to claim 1, is characterized in that, the steam turbine that described steam turbine (2) is adjustable speed.
3. the intensive frequency conversion system of station-service according to claim 1 and 2, it is characterized in that, also comprise: for the Air-Cooling Island (5) of the exhaust steam after steam turbine described in condensation (2) acting, be connected by jet chimney with described steam turbine (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520429841.4U CN204721269U (en) | 2015-06-19 | 2015-06-19 | The intensive frequency conversion system of a kind of station-service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520429841.4U CN204721269U (en) | 2015-06-19 | 2015-06-19 | The intensive frequency conversion system of a kind of station-service |
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| Publication Number | Publication Date |
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| CN204721269U true CN204721269U (en) | 2015-10-21 |
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| CN201520429841.4U Expired - Fee Related CN204721269U (en) | 2015-06-19 | 2015-06-19 | The intensive frequency conversion system of a kind of station-service |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849091A (en) * | 2017-03-24 | 2017-06-13 | 上海申能电力科技有限公司 | It is a kind of to realize novel system, method and application that electric energy conversion switches with motor |
-
2015
- 2015-06-19 CN CN201520429841.4U patent/CN204721269U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849091A (en) * | 2017-03-24 | 2017-06-13 | 上海申能电力科技有限公司 | It is a kind of to realize novel system, method and application that electric energy conversion switches with motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170627 Address after: 030000 Shanxi Province, Taiyuan city Xinghualing District No. 11 North Street No. 10 Building 2 layer 1-2 Patentee after: Shanxi Hao Yuan energy saving Polytron Technologies Inc Address before: 030000 Shanxi Province, Taiyuan city Xinghualing District Xinmin four 5 unit 2, 3 layers of 7 households Patentee before: Zhao Changqing |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180625 Address after: 030000 Xinghua District, Taiyuan, Shanxi, Xinmin four, 5, 2, 3, 7 households. Patentee after: Zhao Changqing Address before: 030000 No. 1-2, 2 building, 11 North Street, Xinghualing District, Taiyuan, Shanxi, 10 Patentee before: Shanxi Hao Yuan energy saving Polytron Technologies Inc |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20200619 |