CN207728409U - Three-exhauster 200MW unit mesolow cylinders combine zero output heating system - Google Patents
Three-exhauster 200MW unit mesolow cylinders combine zero output heating system Download PDFInfo
- Publication number
- CN207728409U CN207728409U CN201820027547.4U CN201820027547U CN207728409U CN 207728409 U CN207728409 U CN 207728409U CN 201820027547 U CN201820027547 U CN 201820027547U CN 207728409 U CN207728409 U CN 207728409U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- valve
- pressure
- low pressure
- steam
- 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.)
- Active
Links
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model discloses a kind of three-exhauster 200MW units mesolow cylinders to combine zero output heating system,It is related to thermal power plant's heating energy-saving field,System includes intermediate pressure cylinder,Middle pressure pitch,First low pressure (LP) cylinder,Second low pressure (LP) cylinder,Heat exchangers for district heating,Condenser,Control to adjust valve and cooling steam system,Middle pressure pitch is arranged on intermediate pressure cylinder steam inlet pipe road,Heat exchangers for district heating steam inlet is connected with mesolow cylinder communicating pipe and intermediate pressure cylinder steam inlet pipe road respectively,Regulating valve is respectively arranged on pipeline,The heat supply extraction line attracted from intermediate pressure cylinder steam inlet pipe is equipped with reducing-and-cooling plant,Cooling steam system is connected with low pressure (LP) cylinder steam inlet duct,It is provided with regulating valve on cooling steam pipeline,Flowmeter and temperature,Pressure-measuring-point,Low pressure (LP) cylinder steam (vapor) outlet is connected with condenser,Regulating valve of the setting with sealing function on mesolow cylinder communicating pipe,The system can further increase peak load regulation ability in the case where meeting heat demand,And it is low with investing,Operate flexible feature.
Description
Technical field
The utility model is related to steam power plant's heating energy-saving fields, and in particular to a kind of three-exhauster 200MW units mesolow cylinder
Combine zero output heating system, which can fully promote the heat of unit, electric peak modulation capacity.
Background technology
In recent years, renewable energy generation of the China based on photovoltaic and wind-powered electricity generation increases rapidly, the first half of the year whole nation in 2017
Newly-increased photovoltaic, installed capacity of wind-driven power are respectively 20,400,000 kW and 6,010,000 kW, and 1.02 are respectively reached to grid connection capacity is added up by the end of June
Hundred million kW and 1.54 hundred million kW greatly develop the important component that regenerative resource is China's future source of energy strategy.It can be again for cooperation
Raw energy unit electricity generation grid-connecting and elimination peak-valley difference increasingly increase the influence to power grid security, peak regulation of the power grid to fired power generating unit
More stringent requirements are proposed for number and quality.In warm season, is limited steam power plant by system thermodynamic property and taken and " determined with heat
The mode operation of electricity ", and heating demand changes over time slowly, to ensure that heating quality, unit do not have peak modulation capacity substantially,
There are contradictions between stable heat demand and frequent peak regulation demand.
Currently, some existing power plant enhance the peak modulation capacity of unit by building heat storage electric boiler or accumulation of heat water pot,
Alleviate problem uncoordinated between thermic load and electric load, but hold over system cost of investment is high, exists in conversion process of energy
Heat dissipates, and overall economy quality is poor.Before this Co., Ltd of Xi'an thermal technology institute propose excision low pressure (LP) cylinder into vapour heating system with
Method, but three-exhauster 200MW thermal power plant units cannot be cut off completely, peak modulation capacity is limited.
Invention content
In order to overcome the above-mentioned problems of the prior art, the purpose of this utility model is to provide a kind of three-exhausters
200MW unit mesolow cylinders combine zero output heating system, compared with heat storage electric boiler and accumulation of heat water pot, the system reform work
Journey amount is small, investment is low, operation is flexible, compared with excision low pressure (LP) cylinder is into the heating system of vapour, has the characteristics that peak modulation capacity is stronger.
In order to achieve the above object, the utility model adopts the following technical solution：
A kind of zero output heating system of three-exhauster 200MW units mesolow cylinder joint, including sequentially connected high pressure cylinder 1,
Intermediate pressure cylinder 2, the first low pressure (LP) cylinder 3 and the second low pressure (LP) cylinder 4, the condenser 5 being connect with the first low pressure (LP) cylinder 3 and the second low pressure (LP) cylinder 4,
In, intermediate pressure cylinder 2 and the first low pressure (LP) cylinder 3 are bound up, high pressure cylinder 1 and 4 individual coaxial of the second low pressure (LP) cylinder arrangement, the second low pressure (LP) cylinder
4 be in symmetrical structure, specifically includes two subelements；Further include heat exchangers for district heating 6, control valve and intermediate duct；Intermediate pressure cylinder 2
Steam inlet duct is equipped with the second valve 8, i.e., middle to press pitch, and extraction line and heat exchangers for district heating 6 are arranged before the second valve 8
It is connected, extraction line is equipped with the first valve 7 and reducing-and-cooling plant 16；Communicating pipe connects intermediate pressure cylinder 2 and the second low pressure (LP) cylinder 4,
4th valve 10 is set on communicating pipe, extraction line and heat exchangers for district heating 6 are equipped between 2 steam drain of the 4th valve 10 and intermediate pressure cylinder
It is connected, extraction line is equipped with third valve 9；Cooling steam pipeline, cooling steam pipeline are respectively equipped with before and after 4th valve 10
On be respectively equipped with the 5th valve 11 and the 6th valve 12, cooling steam pipeline shares temperature point 13, pressure-measuring-point 14 and flow
Meter 15.
For the adjustable range for improving heat, electricity is contributed, extraction steam pipe is respectively provided with before the second valve 8 and the 4th valve 10
The switching of different heat supply modes is completed in road by control valve, improves peak load regulation ability.
To ensure the safe operation of intermediate pressure cylinder 2, the first low pressure (LP) cylinder 3 and the second low pressure (LP) cylinder 4, it is necessary to control the second valve 8
Minimum aperture takes full advantage of the adjusting control function of the valve.
To ensure the safe operation of the first low pressure (LP) cylinder 3 and the second low pressure (LP) cylinder 4, cooling steam system is provided in its inlet
System.
Compared to the prior art compared with the utility model has following advantage：
The utility model is directed to a kind of specific Steam Turbine, it is characterized in that intermediate pressure cylinder 2 and the first low pressure (LP) cylinder 3 are bound up on one
It rises, high pressure cylinder 1 and 4 individual coaxial of the second low pressure (LP) cylinder arrangement, the second low pressure (LP) cylinder 4 are in symmetrical structure, specifically include two subelements.
The utility model can ensure the blade safety of the first low pressure (LP) cylinder 3 when intermediate pressure cylinder 2 zero is contributed and run.
Description of the drawings
Fig. 1 is Tthe utility model system schematic diagram.
In figure：
1- high pressure cylinder 2- intermediate pressure cylinders 3- the first low pressure (LP) cylinder 4- the second low pressure (LP) cylinder 5- condensers
6- heat exchangers for district heatings 7- the first valve 8- the second valve 9- third valves
The 6th valve 13- temperature points of the 4th the 5th valve 12- of valve 11- of 10-
14- pressure-measuring-point 15- flowmeter 16- reducing-and-cooling plants.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, non-heating period, unit is run according to pure condensate operating mode, the first valve 7, third valve 9, the 5th valve
11 and the 6th valve 12 close, the second valve 8 and the 4th valve 10 keep it turning on, and heat exchangers for district heating 6 is not run.
In heat supply period, changed according to electrical load requirement, takes different operational modes：
Pattern one (extraction for heat supply pattern)：First valve 7, the 5th valve 11 and the 6th valve 12 are closed, the second valve 8,
Third valve 9 and the 4th valve 10 are kept it turning on, the throttle flow of the aperture regulation heat exchangers for district heating 6 by controlling third valve 9,
Meet heat demand.
Pattern two (part low pressure (LP) cylinder zero goes out force mode)：When requiring thermic load to increase or electric load reduces, the first valve
The 7, the 4th valve 10 of door and the 5th valve 11 are closed, and the second valve 8, third valve 9 and the 6th valve 12 are opened, 2 row of intermediate pressure cylinder
The vapor portion gone out enters heat exchangers for district heating 6 and carries out heat supply, and the steam that original enters the first low pressure (LP) cylinder 3 continues to be discharged into condensing after doing work
Device 5.When 4th valve 10 completely closes, the second low pressure (LP) cylinder 4 is caused to be flowed into without steam, exhaust stage blade is it is possible that overtemperature wind
Danger, therefore the 6th valve 12 is kept to open, it can be between third valve 9 and the 4th valve 10 or other heater extraction lines
Or auxiliary vapour header extraction section cooling steam, for cooling down the blade in the second low pressure (LP) cylinder 4.Temperature point 13, pressure-measuring-point 14
With flowmeter 15 for monitoring cooling steam parameter, ensure the second low pressure (LP) cylinder 4 blade safety.
Pattern three (mesolow cylinder joint zero goes out force mode)：When the increase of further requirement thermic load or electric load reduce
When, the first valve 7 and the 4th valve 10 are opened, and third valve 9, the 5th valve 11 and the 6th valve 12 are closed, by adjusting subtracting
The aperture of small second valve 8 so that the steam for entering intermediate pressure cylinder 2 is appropriate, realizes that intermediate pressure cylinder and the first low pressure (LP) cylinder 3 and second are low
Cylinder pressure 4 zero, which is contributed, to be run, and can cool down the air blast fever of the first low pressure (LP) cylinder 3 and the second low pressure (LP) cylinder 4.If the first low pressure (LP) cylinder 3 and
Two low pressure (LP) cylinders, 4 air blast fever is still bigger than normal：It can be passed through cooling by keeping the 6th valve 12 to close but opening the 5th valve 11
Steam enters the first low pressure (LP) cylinder 3 and the second low pressure (LP) cylinder 4；Steam flow band can also be increased by the aperture of the second valve 8 of increase
Walk air blast heat；If adding spray desuperheating device at 4 exhaust stage blade of the first low pressure (LP) cylinder 3 and the second low pressure (LP) cylinder, also can effectively solve
The certainly problem.Second valve 8 is middle pressure pitch group, belongs to unit and has installed equipment, aperture can change to 100% from 0, and flow connects
It is continuous adjustable.
In heat supply period, by the flexible switching of three of the above pattern, unit heat can be adjusted on a large scale, electricity is contributed, phase
Compared with heat storage electric boiler and water pot, with cost of investment is low, the construction period is short, operation is flexible, the lower advantage of operating cost.
Although the utility model is described above in conjunction with attached drawing, the utility model is not limited to above-mentioned tool
Body embodiment, the above mentioned embodiment is only schematical, rather than restrictive, the ordinary skill people of this field
Member, in the case where not departing from the utility model aims, can also make many variations under the enlightenment of the utility model, these
It belongs within the protection of the utility model.All non-essential modifications to the present invention made by this concept should all belong to
In the behavior for invading scope of protection of the utility model.
Claims (2)
1. a kind of three-exhauster 200MW units mesolow cylinder combines zero output heating system, it is characterised in that：Including sequentially connected
High pressure cylinder (1), intermediate pressure cylinder (2), the first low pressure (LP) cylinder (3) and the second low pressure (LP) cylinder (4), with the first low pressure (LP) cylinder (3) and the second low pressure (LP) cylinder
(4) condenser (5) connected, wherein intermediate pressure cylinder (2) and the first low pressure (LP) cylinder (3) are bound up, high pressure cylinder (1) and second low
Cylinder pressure (4) individual coaxial arranges that the second low pressure (LP) cylinder (4) is in symmetrical structure, specifically includes two subelements；It further include heat supply network heating
Device (6), control valve and intermediate duct；Medium pressure cylinder (2) steam inlet duct is equipped with the second valve (8), i.e., middle pressure
Pitch, setting extraction line is connected with heat exchangers for district heating (6) before the second valve (8), and extraction line is equipped with the first valve (7)
With reducing-and-cooling plant (16)；Communicating pipe connects intermediate pressure cylinder (2) and the second low pressure (LP) cylinder (4), and the 4th valve is arranged on communicating pipe
(10), it is connected with heat exchangers for district heating (6) equipped with extraction line between the 4th valve (10) and intermediate pressure cylinder (2) steam drain, extraction steam pipe
Road is equipped with third valve (9)；4th valve (10) is front and back to be respectively equipped with cooling steam pipeline, is set respectively on cooling steam pipeline
There are the 5th valve (11) and the 6th valve (12), cooling steam pipeline to share temperature point (13), pressure-measuring-point (14) and flow
It counts (15).
2. mesolow cylinder combines zero output heating system according to claim 1, it is characterised in that：In the first low pressure (LP) cylinder (3)
It is equipped with cooling steam system with the second low pressure (LP) cylinder (4) entrance, prevents the linear leaf of low pressure (LP) cylinder under small flow from air blast overtemperature feelings occur
Condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820027547.4U CN207728409U (en) | 2018-01-08 | 2018-01-08 | Three-exhauster 200MW unit mesolow cylinders combine zero output heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820027547.4U CN207728409U (en) | 2018-01-08 | 2018-01-08 | Three-exhauster 200MW unit mesolow cylinders combine zero output heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207728409U true CN207728409U (en) | 2018-08-14 |
Family
ID=63084997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820027547.4U Active CN207728409U (en) | 2018-01-08 | 2018-01-08 | Three-exhauster 200MW unit mesolow cylinders combine zero output heating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207728409U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108049923A (en) * | 2018-01-08 | 2018-05-18 | 西安西热节能技术有限公司 | Three-exhauster 200MW unit mesolows cylinder combines zero output heating system and method |
| CN109209531A (en) * | 2018-09-18 | 2019-01-15 | 东方电气集团东方汽轮机有限公司 | A kind of steamer machine-cut cylinder heating system |
-
2018
- 2018-01-08 CN CN201820027547.4U patent/CN207728409U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108049923A (en) * | 2018-01-08 | 2018-05-18 | 西安西热节能技术有限公司 | Three-exhauster 200MW unit mesolows cylinder combines zero output heating system and method |
| CN108049923B (en) * | 2018-01-08 | 2023-05-05 | 西安西热节能技术有限公司 | Three-exhaust 200MW unit medium-low pressure cylinder combined zero-output heat supply system and method |
| CN109209531A (en) * | 2018-09-18 | 2019-01-15 | 东方电气集团东方汽轮机有限公司 | A kind of steamer machine-cut cylinder heating system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108049923A (en) | Three-exhauster 200MW unit mesolows cylinder combines zero output heating system and method | |
| CN108035777A (en) | A kind of fired power generating unit mesolow cylinder combines zero output heating system and method | |
| CN108506057B (en) | Cogeneration system for cutting off steam inlet of low-pressure cylinder and adjusting method | |
| DK3001111T3 (en) | ELECTRICAL POWER-PEAK SHAVING AND COMBINED HEAT AND POWER WASTE HEATING RECOVERY AND OPERATING PROCEDURE THEREOF | |
| CN108343479B (en) | Two-unit-based back condensation and extraction heat supply system and adjusting method | |
| CN209688957U (en) | The high back pressure heating system of thermoelectricity decoupling | |
| CN205957280U (en) | Absorption heat pump heating steam extracting and heat supplying system | |
| CN107461728B (en) | Electric heat accumulating boiler heat regenerating system for peak shaving | |
| CN110332026B (en) | Steam extraction power generation heat supply system for coupling condensation back extraction heat supply and operation method | |
| CN108533340A (en) | Cogeneration units depth peak regulation bypasses heat supply running device and operation method | |
| CN109058966A (en) | A kind of power supply unit depth peak regulation system and its peak regulating method | |
| CN207728409U (en) | Three-exhauster 200MW unit mesolow cylinders combine zero output heating system | |
| CN207813675U (en) | A kind of co-generation unit for carrying on the back heat supply for solidifying pumping | |
| CN209147060U (en) | A kind of power supply unit depth peak regulation system | |
| CN207728406U (en) | A kind of zero output heating system of fired power generating unit mesolow cylinder joint | |
| CN210511852U (en) | High-backpressure coupling large-temperature-difference heat supply system for indirect air cooling unit | |
| CN208687705U (en) | A kind of system that excision low pressure (LP) cylinder is coupled into automotive row with low-pressure coal saver | |
| CN112412557B (en) | Steam turbine high-side flexible heat supply system with auxiliary frequency modulation function | |
| CN205840930U (en) | A kind of high back pressure little steam turbine heating extraction for heat supply system | |
| CN111005776B (en) | Heat supply method and heat supply system based on low-pressure cylinder optical axis heat supply technology | |
| CN207674551U (en) | A kind of cooling tower antifreezing system for the solidifying pumping back of the body heat supply of steam turbine | |
| CN209195495U (en) | A kind of embedded thermoelectricity peak regulation system of photo-thermal | |
| CN214275887U (en) | Heating pipe section hot standby heating pipe system for steam extraction and heat supply | |
| CN212508456U (en) | Little steam discharge flow air cooling island system of preventing frostbite based on flue gas waste heat utilization | |
| CN211854139U (en) | Heating system based on low-pressure optical axis technology of steam turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |