CN211950612U - Cogeneration system capable of meeting resident heating demand during deep peak shaving - Google Patents
Cogeneration system capable of meeting resident heating demand during deep peak shaving Download PDFInfo
- Publication number
- CN211950612U CN211950612U CN202020569106.4U CN202020569106U CN211950612U CN 211950612 U CN211950612 U CN 211950612U CN 202020569106 U CN202020569106 U CN 202020569106U CN 211950612 U CN211950612 U CN 211950612U
- Authority
- CN
- China
- Prior art keywords
- steam
- pressure cylinder
- pipeline
- pressure
- pipelines
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
Abstract
A combined heat and power generation system capable of meeting the resident heating demand during deep peak regulation comprises a high-pressure cylinder, an intermediate-pressure cylinder and a low-pressure cylinder of a steam turbine, wherein a steam outlet of the high-pressure cylinder is connected with a reheater inlet of a boiler through a high-pressure cylinder steam output pipeline, an outlet of the reheater of the boiler is connected with a steam inlet of the intermediate-pressure cylinder through an intermediate-pressure cylinder steam input pipeline, a steam outlet of the intermediate-pressure cylinder is connected with a steam inlet of the low-pressure cylinder through an intermediate-pressure cylinder steam output pipeline, a steam outlet of the low-pressure cylinder is connected with an inlet of a condenser through a pipeline, a low-pressure bypass is arranged between two intermediate-pressure cylinder steam input pipelines and the condenser, a primary heat exchange pipeline is connected with a heat exchange tube pass inlet of the condenser, a steam inlet and a steam outlet of the heat exchanger are connected with a heat exchanger steam input pipeline connected with the intermediate-pressure, the second-stage heat exchange pipeline is connected with a heat exchange tube side inlet of the heat exchanger. The utility model discloses can satisfy resident's heating demand when the system degree of depth peak shaving.
Description
Technical Field
The utility model relates to a combined heat and power generation system, concretely relates to combined heat and power generation system of resident's heating demand when can satisfying the degree of depth peak shaver.
Background
The cogeneration project was primarily applied in the industrial field at the earliest time, and then developed to the central heating of residents. In recent years, cogeneration projects in various regions are built and put into production, so that the urban heat supply capacity of China is continuously improved. Due to the support of relevant national policies, the development of cogeneration in China is very rapid.
The temperature is lower in northern China in winter, the heat supply of a cogeneration system needs to be increased along with the reduction of the environmental temperature, and the electric load is increased, so that the on-line electric quantity of the steam turbine set cannot meet the peak value requirement of the operating rule (for seeking an opinion) of the northeast electric auxiliary service market of the northeast energy regulatory agency in the peak value adjusting period of the heating season, the peak adjusting examination pressure is increased, and great pressure is brought to the operation situation of a company. Under the condition that the electrical load is reduced during deep peak shaving, the main steam pressure and the flow are reduced, and the heating requirement of residents cannot be met.
Therefore, how to meet the heating demand of residents under the condition that the electric load is reduced during deep peak shaving is a technical problem which needs to be solved urgently at present.
Disclosure of Invention
The utility model aims at overcoming the deficiencies in the prior art and providing a cogeneration system which can meet the heating demand of residents during deep peak shaving.
The utility model discloses a realize through following technical scheme: a combined heat and power generation system capable of meeting resident heating requirements during deep peak shaving comprises a boiler, a condenser, a heat exchanger, a high-pressure cylinder of a steam turbine, an intermediate-pressure cylinder and a low-pressure cylinder, wherein a steam outlet of the boiler is connected with upper and lower steam inlets of the high-pressure cylinder through two high-pressure cylinder steam input pipelines, two steam outlets of the high-pressure cylinder are connected with an inlet of a reheater of the boiler through two high-pressure cylinder steam output pipelines, a high-pressure bypass is arranged between the two high-pressure cylinder steam input pipelines and the two high-pressure cylinder steam output pipelines, an outlet of the reheater of the boiler is connected with upper and lower steam inlets of the intermediate-pressure cylinder through two intermediate-pressure cylinder steam input pipelines, a steam outlet of the intermediate-pressure cylinder is connected with a steam inlet of the low-pressure cylinder through an intermediate-pressure cylinder steam output pipeline, and a steam outlet of the low-pressure cylinder is connected with, two intermediate pressure jar steam input pipeline with be provided with the low pressure bypass between the condenser, a supply channel passes through scrubbing device and one-level heat transfer tube coupling, this one-level heat transfer tube with the heat transfer tube side entry linkage of condenser, the heat transfer tube side export of condenser is connected with pressure boost tube through the pipeline, intermediate pressure jar steam output tube coupling has heat exchanger steam input pipeline, the steam inlet of heat exchanger passes through the pipeline and inserts heat exchanger steam input pipeline, pressure boost tube pass through the second grade heat transfer tube way with the heat transfer tube side entry linkage of heat exchanger, the heat transfer tube side export of heat exchanger passes through the pipeline and is connected with the heat supply pipeline.
And a temperature and pressure reducer and an electric control valve are arranged on the low-pressure bypass.
And the high-pressure bypass is provided with a temperature and pressure reducer and an electric control valve.
The booster pipeline is composed of a plurality of pipelines connected in parallel, and valves and booster pumps are arranged on the pipelines.
The pressure pipeline and the heat supply pipeline are connected in parallel with a plurality of heat exchangers, and steam inlets of the heat exchangers are connected into the steam input pipeline of the heat exchangers through pipelines.
The utility model has the advantages that: the utility model discloses rational in infrastructure, job stabilization can satisfy resident's heating demand under the condition that the electric load reduces when the degree of depth peak shaving.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-a high pressure cylinder; 2-intermediate pressure cylinder; 3-low pressure cylinder; 4-high pressure bypass; 5-low pressure bypass; 6-a boiler; 7-high pressure cylinder steam input pipeline; 8-high pressure cylinder steam output pipeline; 9-steam input pipeline of the intermediate pressure cylinder; 10-intermediate pressure cylinder steam output pipeline; 11-a condenser; 12-water supply line; 13-a decontamination device; 14-primary heat exchange pipeline; 15-a pressurization pipeline; 16-a secondary heat exchange circuit; 17-a heat exchanger; 18-a heat supply pipeline; 19-temperature and pressure reduction; 20-an electrically controlled valve; 21-heat exchanger steam input line.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in figure 1, a heat and power cogeneration system capable of meeting the resident heating demand during deep peak shaving comprises a boiler 6, a condenser 11, a heat exchanger 17, a high pressure cylinder 1 of a steam turbine, an intermediate pressure cylinder 2 and a low pressure cylinder 3, wherein a steam outlet of the boiler 6 is connected with upper and lower steam inlets of the high pressure cylinder 1 through two high pressure cylinder steam input pipelines 7, two steam outlets of the high pressure cylinder 1 are connected with an inlet of a reheater of the boiler 6 through two high pressure cylinder steam output pipelines 8, a high pressure bypass 4 is arranged between the two high pressure cylinder steam input pipelines 7 and the two high pressure cylinder steam output pipelines 8, an outlet of the reheater of the boiler 6 is connected with upper and lower steam inlets of the intermediate pressure cylinder 2 through two intermediate pressure cylinder steam input pipelines 9, a steam outlet of the intermediate pressure cylinder 2 is connected with a steam inlet of the low pressure cylinder 3 through an intermediate pressure cylinder steam output pipeline 10, a steam outlet of the low pressure cylinder 3 is connected with an inlet of the condenser, be provided with low pressure bypass 5 between two intermediate pressure cylinder steam input pipeline 9 and the condenser 11, a water supply pipeline 12 passes through scrubbing device 13 and is connected with one-level heat transfer pipeline 14, this one-level heat transfer pipeline 14 and the heat transfer tube side entry linkage of condenser 11, the heat transfer tube side export of condenser 11 is connected with pressure boost pipeline 15 through the pipeline, intermediate pressure cylinder steam output pipeline 10 is connected with heat exchanger steam input pipeline 21, the steam inlet of heat exchanger 17 passes through the pipeline and inserts heat exchanger steam input pipeline 21, pressure boost pipeline 15 passes through the heat transfer tube side entry linkage of second grade heat transfer pipeline 16 with heat exchanger 17, the heat transfer tube side export of heat exchanger 17 passes through the pipeline and is connected with heat supply pipeline 18.
Wherein, the low pressure bypass 5 is provided with a temperature and pressure reducing device 19 and an electric control valve 20. The high-pressure bypass 4 is provided with a temperature and pressure reducer 19 and an electric control valve 20. The booster line 15 is constituted by a plurality of lines connected in parallel, and valves and booster pumps are provided on these lines.
During deep peak shaving, the electric control valve 20 is opened to open the low-pressure bypass 5, and then the electric control valve 20 is opened to open the high-pressure bypass 4. When the low-pressure bypass 5 works, the temperature and pressure reducing device 19 works, part of steam of the two intermediate pressure cylinder steam input pipelines 9 enters the low-pressure bypass 5, and the temperature and pressure reducing device 19 reduces the temperature and the pressure so as to reduce the amount of the steam entering the intermediate pressure cylinder 2, thereby reducing the electric load. The steam is subjected to temperature and pressure reduction by the temperature and pressure reducer 19 and then enters the condenser 11 to form primary heating of heating hot water. Meanwhile, a part of the steam output by the intermediate pressure cylinder 2 enters the low pressure cylinder 3 and then enters the condenser 11 to form primary heating of the heating hot water, and the other part of the steam output by the intermediate pressure cylinder 2 enters the heat exchanger 17 through the heat exchanger steam input pipeline 21 to form secondary heating of the heating hot water. The bottom of the heat exchanger 17 is provided with a water outlet, and the steam enters the shell pass of the heat exchanger 17 to exchange heat with the heating water in the tube pass and then turns into water to be discharged from the water outlet of the heat exchanger 17.
A plurality of heat exchangers 17 are connected in parallel with the pressurizing pipeline 15 and the heat supply pipeline 18, and steam inlets of the heat exchangers 17 are connected into a heat exchanger steam input pipeline 21 through pipelines so as to further increase the secondary heating effect.
When the high-pressure bypass 4 works, the temperature and pressure reducing device 19 works, part of steam of the two high-pressure cylinder steam input pipelines 7 enters the high-pressure bypass 4, and the temperature and pressure are reduced by the temperature and pressure reducing device 19 so as to reduce the amount of the steam entering the high-pressure cylinder 1, thereby reducing the electric load. Meanwhile, the steam of the high-pressure cylinder steam output pipeline 8 is further cooled by the high-pressure bypass 4, the steam quantity and the steam temperature entering a reheater of the boiler 6 are reduced, the heating surface of the reheater is protected, and the phenomenon that the heating surface of the reheater is too high in temperature to cause faults is avoided.
It should be finally noted that the above only serves to illustrate the technical solution of the present invention, and not to limit the scope of the present invention, and that simple modifications or equivalent replacements performed by those skilled in the art to the technical solution of the present invention do not depart from the spirit and scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a can satisfy resident's cogeneration system of heating demand when degree of depth peak regulation which characterized in that: the cogeneration system capable of meeting the resident heating demand during deep peak shaving comprises a boiler, a condenser, a heat exchanger, a high-pressure cylinder of a steam turbine, an intermediate pressure cylinder and a low-pressure cylinder, wherein a steam outlet of the boiler is connected with upper and lower steam inlets of the high-pressure cylinder through two high-pressure cylinder steam input pipelines, two steam outlets of the high-pressure cylinder are connected with an inlet of a reheater of the boiler through two high-pressure cylinder steam output pipelines, a high-pressure bypass is arranged between the two high-pressure cylinder steam input pipelines and the two high-pressure cylinder steam output pipelines, an outlet of the reheater of the boiler is connected with the upper and lower steam inlets of the intermediate pressure cylinder through two intermediate pressure cylinder steam input pipelines, a steam outlet of the intermediate pressure cylinder is connected with the steam inlet of the low-pressure cylinder through an intermediate pressure cylinder steam output pipeline, and a steam outlet of the low-pressure cylinder is connected with an inlet of the condenser, two intermediate pressure jar steam input pipeline with be provided with the low pressure bypass between the condenser, a supply channel passes through scrubbing device and one-level heat transfer tube coupling, this one-level heat transfer tube with the heat transfer tube side entry linkage of condenser, the heat transfer tube side export of condenser is connected with pressure boost tube through the pipeline, intermediate pressure jar steam output tube coupling has heat exchanger steam input pipeline, the steam inlet of heat exchanger passes through the pipeline and inserts heat exchanger steam input pipeline, pressure boost tube pass through the second grade heat transfer tube way with the heat transfer tube side entry linkage of heat exchanger, the heat transfer tube side export of heat exchanger passes through the pipeline and is connected with the heat supply pipeline.
2. The cogeneration system of claim 1, wherein the heating demand of the residents during deep peak shaving is satisfied by: and a temperature and pressure reducer and an electric control valve are arranged on the low-pressure bypass.
3. The cogeneration system of claim 2, wherein the heating demand of the residents during deep peak shaving is satisfied by: and the high-pressure bypass is provided with a temperature and pressure reducer and an electric control valve.
4. The cogeneration system of claim 3, wherein said cogeneration system is characterized in that: the booster pipeline is composed of a plurality of pipelines connected in parallel, and valves and booster pumps are arranged on the pipelines.
5. The cogeneration system of claim 4, wherein the heating demand of the residents during deep peak shaving is satisfied by: the pressure pipeline and the heat supply pipeline are connected in parallel with a plurality of heat exchangers, and steam inlets of the heat exchangers are connected into the steam input pipeline of the heat exchangers through pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020569106.4U CN211950612U (en) | 2020-04-16 | 2020-04-16 | Cogeneration system capable of meeting resident heating demand during deep peak shaving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020569106.4U CN211950612U (en) | 2020-04-16 | 2020-04-16 | Cogeneration system capable of meeting resident heating demand during deep peak shaving |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211950612U true CN211950612U (en) | 2020-11-17 |
Family
ID=73164363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020569106.4U Expired - Fee Related CN211950612U (en) | 2020-04-16 | 2020-04-16 | Cogeneration system capable of meeting resident heating demand during deep peak shaving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211950612U (en) |
-
2020
- 2020-04-16 CN CN202020569106.4U patent/CN211950612U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109798157B (en) | Condensing and back-pumping coupled steam extraction integrated system for thermoelectric unit power peak regulation and operation method thereof | |
| CN110005488B (en) | Energy-saving optimization method for high-back-pressure heat supply system | |
| CN112594667A (en) | System and method for adjusting reheat steam temperature of high-temperature ultrahigh-pressure reheat dry quenching boiler | |
| CN113339775A (en) | Thermal power deep peak regulation system and peak regulation method based on boiler side heat storage | |
| CN113202580A (en) | Thermoelectric decoupling system based on bypass regulation | |
| CN108868923B (en) | Three-way jet flow temperature and pressure reducing control system for heat supply of heat supply network | |
| CN204648396U (en) | A kind of series connection heat supply network of 350MW high back pressure thermal power plant unit | |
| CN113153450A (en) | Cogeneration system and method | |
| CN211950612U (en) | Cogeneration system capable of meeting resident heating demand during deep peak shaving | |
| CN112282874A (en) | System for be used for improving industry heat supply flexibility | |
| CN111237735A (en) | Emergency industrial steam supply system for realizing shutdown and non-shutdown of large coal-fired generator set | |
| CN111412031B (en) | Combined heat and power generation method capable of meeting resident and industrial heat supply requirements during deep peak shaving | |
| CN211975072U (en) | Steam working medium excess pressure utilization structure of thermal power factory | |
| CN215372401U (en) | Thermal power depth peak regulation system based on boiler side heat storage | |
| CN213711130U (en) | System for improving flexibility of industrial heating | |
| CN109779705B (en) | Heating system for flexibly regulating steam inlet of steam turbine of coal-fired heat supply power plant | |
| CN209763246U (en) | Flue gas waste heat utilization heating system | |
| CN208139244U (en) | A kind of thermal power plant boiler rises the energy-saving emission-reducing apparatus during blowing out, interim banking fire | |
| CN216772824U (en) | Electricity-heat-steam co-generation combined supply system utilizing nuclear energy | |
| CN215170223U (en) | Cogeneration system | |
| CN111425274A (en) | Combined heat and power generation system capable of meeting resident and industrial heat supply requirements during deep peak shaving | |
| CN220321409U (en) | Heat supply steam system based on medium-pressure water supply | |
| CN214580977U (en) | High-temperature ultrahigh-pressure reheating dry quenching boiler reheat steam temperature adjusting system | |
| CN219605359U (en) | Bypass heating system based on BEST (fast operating test) small machine | |
| CN218154185U (en) | System combining small-differential-pressure low-pressure steam power generation and temperature and pressure reduction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201117 Termination date: 20210416 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |