CN203797756U - Continuous heating system for cogeneration - Google Patents
Continuous heating system for cogeneration Download PDFInfo
- Publication number
- CN203797756U CN203797756U CN201420205253.8U CN201420205253U CN203797756U CN 203797756 U CN203797756 U CN 203797756U CN 201420205253 U CN201420205253 U CN 201420205253U CN 203797756 U CN203797756 U CN 203797756U
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- China
- Prior art keywords
- steam
- communicated
- steam turbine
- heat
- valve
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- 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.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 51
- 238000000605 extraction Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The utility model relates to a heating system, in particular to a continuous heating system for cogeneration, in order to solve the problem that when an existing cogeneration unit supplies heat, the unit cannot be started, heat supply to the outside by the unit is interrupted and continuous heating cannot be realized after a steam turbine or electrical equipment is damaged, and a heat supply pipeline is easily frozen when outdoor temperature is low at heat supply peak in winter. The continuous heating system comprises a steam boiler, a steam turbine, a condenser, a heating network circulation pump, a heating network heater, a stop valve, an electric control valve, two switching valves and two gate valves, the steam outlet end of the steam boiler is communicated with the steam inlet end of the steam turbine, a steam extraction opening of the steam turbine is communicated with a steam inlet of the heating network heater, the condenser is communicated with the steam turbine, the heating network heater and the heating network circulation pump are arranged in parallel, and the stop valve is mounted on a pipeline on which the steam extraction opening of the steam turbine is communicated with the steam inlet of the heating network heater. The continuous heating system is used for continuous heat supply for cogeneration.
Description
Technical field
The utility model relates to a kind of heating system, is specifically related to a kind of not blowing out of shutdown continuous heating system for cogeneration of heat and power.
Background technology
Cogeneration units generally has three kinds of heat-supplying modes at present: extraction for heat supply, Heat Supplying with Low Vacuum, the heat supply of back pressure unit steam discharge.No matter adopt which kind of heat-supplying mode a whole set of operation of unit can guarantee continuous heat supply, and once generation steam turbine or electrical equipment damage, when unit cannot start, the external heat supply discontinuity events of unit just can occur, when heat supply peak outdoor temperature is lower in the winter time, the as easy as rolling off a log heat supply pipeline that causes freezes, and then be expanded into heat supply and the great heat supply accident such as disintegrate, short time cannot repair, cannot continuous heat supply, and the normal operation that impact is produced, thereby, must take measures to avoid the generation of this phenomenon.
Utility model content
The utility model is when solving existing cogeneration units heat supply, steam turbine or electrical equipment cause unit to start after damaging, unit externally supplies thermal break, cannot continuous heat supply and the as easy as rolling off a log problem that causes heat supply pipeline to freeze when heat supply peak outdoor temperature is lower in the winter time, and then the continuous heating system that provides a kind of cogeneration of heat and power to use.
The utility model is to address the above problem the technical scheme of taking to be: the continuous heating system that a kind of cogeneration of heat and power of the present utility model is used comprises steam boiler, steam turbine, condenser, pumps for hot water supply net, heat exchangers for district heating, stop valve, electric control valve, two switch valves and two gate valves, the steam (vapor) outlet end of steam boiler is communicated with the steam inlet end of steam turbine, the extraction opening of steam turbine is communicated with the air intake of heat exchangers for district heating, condenser is communicated with steam turbine, heat exchangers for district heating and pumps for hot water supply net are arranged in parallel, heat exchangers for district heating is communicated with the steam (vapor) outlet end of condenser and steam boiler respectively with the main pipe rail after pumps for hot water supply net parallel connection, on the pipeline that the extraction opening of steam turbine is communicated with the air intake of heat exchangers for district heating, stop valve is installed, a gate valve is installed on the main pipe rail after heat exchangers for district heating is in parallel with pumps for hot water supply net, another gate valve is installed on the pipeline that described main pipe rail is communicated with heat exchangers for district heating, a switch valve is installed on the pipeline that described main pipe rail is communicated with condenser, another switch valve is installed on the pipeline that described main pipe rail is communicated with pumps for hot water supply net, on the pipeline that described main pipe rail is communicated with the steam (vapor) outlet end of steam boiler, electric control valve is installed.
The beneficial effects of the utility model are: the major function of steam boiler of the present utility model is to provide initial steam for steam turbine, when steam turbine is normally worked, the initial steam that steam boiler is sent here is gone to steam turbine, draw gas and go to heat exchangers for district heating in steam turbine acting rear section, heat hot water supply heat network system in heat exchangers for district heating, heat exchangers for district heating is communicated with as bypass line with the steam (vapor) outlet end of steam boiler with the main pipe rail after pumps for hot water supply net parallel connection, this bypass when normal operation in closed condition, without vapor flow, boiler export steam is all gone to steam turbine, only have in the state of accident.Heat net pump steam discharge of the present utility model is designed to two-way, heat net pump one tunnel is communicated with heat exchangers for district heating, condenser is removed on another road, when heat net pump normally moves, steam discharge can not coexist and switch between heat exchangers for district heating and condenser according to the cogeneration units method of operation, on the pipeline that described main pipe rail is communicated with condenser, switch valve is installed, on the pipeline that described main pipe rail is communicated with circulation heat supply network mercury vapour turbine, switch valve is installed, when steam turbine or electrical equipment malfunction, when the normal operation of steam boiler and steam turbine can not directly be given heat exchangers for district heating heat supply, close two switch valves, still can start steam boiler, now start described bypass line, initial steam enters heat exchangers for district heating by this bypass line by pumps for hot water supply net exhaust line, and then still provide continuously heat exchangers for district heating heat supply institute calorific requirement, guaranteed continuous heat supply, while having guaranteed that Winter heat supply peak outdoor temperature is lower, heat supply pipeline can not freeze, met user's demand.
The utility model is for cogeneration units, need not unit the whole series start just externally continuous heat supply, steam boiler equipment is intact can external heat supply, heat supply safety coefficient is high, reduce largely the probability that the external heat supply discontinuity events in power plant occurs, interrupt heat supply accident probability and reduced more than 95%, heat supply continous-stable is reliable, and while having guaranteed that Winter heat supply peak outdoor temperature is lower, heat supply pipeline can not freeze.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram (arrow points be vapor flow direction) of steam turbine of the present utility model while normally moving, overall structure schematic diagram when Fig. 2 is steam turbine fault of the present utility model (arrow points is vapor flow direction).
The specific embodiment
The specific embodiment one: in conjunction with Fig. 1 and Fig. 2 explanation, the continuous heating system that a kind of cogeneration of heat and power of present embodiment is used comprises steam boiler 1, steam turbine 2, condenser 3, pumps for hot water supply net 4, heat exchangers for district heating 5, stop valve 6, electric control valve 10, two switch valves 7 and two gate valves 8, the steam (vapor) outlet end of steam boiler 1 is communicated with the steam inlet end of steam turbine 2, the extraction opening of steam turbine 2 is communicated with the air intake of heat exchangers for district heating 5, condenser 3 is communicated with steam turbine 2, heat exchangers for district heating 5 is arranged in parallel with pumps for hot water supply net 4, heat exchangers for district heating 5 is communicated with the steam (vapor) outlet end of condenser 3 and steam boiler 1 respectively with the main pipe rail 9 after pumps for hot water supply net 4 parallel connections, on the pipeline that the extraction opening of steam turbine 2 is communicated with the air intake of heat exchangers for district heating 5, stop valve 6 is installed, a gate valve 8 is installed on the main pipe rail 9 after heat exchangers for district heating 5 is in parallel with pumps for hot water supply net 4, another gate valve 8 is installed on the pipeline that described main pipe rail 9 is communicated with heat exchangers for district heating 5, a switch valve 7 is installed on the pipeline that described main pipe rail 9 is communicated with condenser 3, another switch valve 7 is installed on the pipeline that described main pipe rail 9 is communicated with pumps for hot water supply net 4, on the pipeline that described main pipe rail 9 is communicated with the steam (vapor) outlet end of steam boiler 1, electric control valve 10 is installed.
The model that the steam turbine of present embodiment preferentially selects Qingdao Hua Jie turbo power Co., Ltd to manufacture is B1.4-0.17/0.05 pumps for hot water supply net.Electric control valve, flexibility is high, is easy to flow and pressure in control valve.
The specific embodiment two: in conjunction with Fig. 1 and Fig. 2, present embodiment is described, stop valve 6 is straight-through stop valve described in present embodiment.So arrange, wear-resisting, Lift is little, and manufacturing process performance is good, can meet design requirement and real work needs.Other is identical with the specific embodiment one.
The specific embodiment three: in conjunction with Fig. 1 and Fig. 2 explanation, two switch valves 7 are electric switching valve or pneumatic on-off valve described in present embodiment.So arrange, easy to use and reliable, while meeting the normal operation of steam turbine or fault, the needs of steam boiler continuous heat supply.Other is identical with the specific embodiment one or two.
Claims (3)
1. the continuous heating system that cogeneration of heat and power is used, it is characterized in that: described heating system comprises steam boiler (1), steam turbine (2), condenser (3), pumps for hot water supply net (4), heat exchangers for district heating (5), stop valve (6), electric control valve (10), two switch valves (7) and two gate valves (8), the steam (vapor) outlet end of steam boiler (1) is communicated with the steam inlet end of steam turbine (2), the extraction opening of steam turbine (2) is communicated with the air intake of heat exchangers for district heating (5), condenser (3) is communicated with steam turbine (2), heat exchangers for district heating (5) is arranged in parallel with pumps for hot water supply net (4), heat exchangers for district heating (5) is communicated with the steam (vapor) outlet end of condenser (3) and steam boiler (1) respectively with the main pipe rail (9) after pumps for hot water supply net (4) parallel connection, on the pipeline that the extraction opening of steam turbine (2) is communicated with the air intake of heat exchangers for district heating (5), stop valve (6) is installed, on main pipe rail (9) after heat exchangers for district heating (5) is in parallel with pumps for hot water supply net (4), a gate valve (8) is installed, on the pipeline that described main pipe rail (9) is communicated with heat exchangers for district heating (5), another gate valve (8) is installed, on the pipeline that described main pipe rail (9) is communicated with condenser (3), a switch valve (7) is installed, on the pipeline that described main pipe rail (9) is communicated with pumps for hot water supply net (4), another switch valve (7) is installed, on the pipeline that described main pipe rail (9) is communicated with the steam (vapor) outlet end of steam boiler (1), electric control valve (10) is installed.
2. the continuous heating system that a kind of cogeneration of heat and power according to claim 1 is used, is characterized in that: described stop valve (6) is straight-through stop valve.
3. the continuous heating system that a kind of cogeneration of heat and power according to claim 1 and 2 is used, is characterized in that: described two switch valves (7) are electric switching valve or pneumatic on-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420205253.8U CN203797756U (en) | 2014-04-25 | 2014-04-25 | Continuous heating system for cogeneration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420205253.8U CN203797756U (en) | 2014-04-25 | 2014-04-25 | Continuous heating system for cogeneration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203797756U true CN203797756U (en) | 2014-08-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420205253.8U Expired - Lifetime CN203797756U (en) | 2014-04-25 | 2014-04-25 | Continuous heating system for cogeneration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203797756U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697077A (en) * | 2016-04-01 | 2016-06-22 | 杭州燃油锅炉有限公司 | Modification method of combined heat and power system of large-scale extracting and condensing steam turbine |
-
2014
- 2014-04-25 CN CN201420205253.8U patent/CN203797756U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697077A (en) * | 2016-04-01 | 2016-06-22 | 杭州燃油锅炉有限公司 | Modification method of combined heat and power system of large-scale extracting and condensing steam turbine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |