CN217080588U - Cogeneration heating and power generation system - Google Patents
Cogeneration heating and power generation system Download PDFInfo
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- CN217080588U CN217080588U CN202220734350.0U CN202220734350U CN217080588U CN 217080588 U CN217080588 U CN 217080588U CN 202220734350 U CN202220734350 U CN 202220734350U CN 217080588 U CN217080588 U CN 217080588U
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Abstract
The utility model discloses a combined heat and power generation system, include: the boiler, take out the steam turbine, the backpressure steam turbine, high pressure feed water heater, the condenser, first heat exchanger, the second heat exchanger, first temperature and pressure reducer, the second temperature and pressure reducer, third temperature and pressure reducer and condensing tower, backpressure steam turbine and steam turbine all are connected with the boiler, take out steam turbine's extraction steam port and high pressure feed water heater connection, the steam extraction mouth is connected with the boiler through the condenser, the high pressure steam extraction mouth of backpressure steam turbine, low pressure steam extraction mouth, it all loops through temperature and pressure reducer, first heat exchanger, condenser and second heat exchanger and boiler connection to take out steam turbine extraction steam port, first heat exchanger still directly is connected with the boiler through the valve, the condensing tower provides the cold source for the condenser. The heat and power cogeneration heat supply and power generation system is reasonable in structure, and can effectively recycle the heat of the exhaust steam of the condensing turbine through the back pressure turbine and the condensing turbine for heat supply and power generation.
Description
Technical Field
The utility model relates to an improve thermoelectric efficiency's heat supply power generation technical field, provide a combined heat and power generation system very much.
Background
The existing power supply heating system generally operates independently with a back pressure turbine and an extraction condensing turbine, high-pressure and low-pressure steam exhaust of the back pressure turbine and steam extraction of the extraction condensing turbine are utilized to supply steam to different heat users, the pressure and the temperature of steam (dead steam and steam turbine can not do work) of a steam exhaust channel of the general extraction condensing turbine are lower, the steam is generally directly exhausted into the atmosphere after being cooled by circulating water of a condenser, the heat of the circulating water of the condenser after being heated is not effectively utilized, the heat is wasted in winter, and further the economic benefit of a power plant is reduced.
Therefore, a novel cogeneration heating and power generation system is provided, which effectively recycles the exhaust heat of the condensing turbine, and becomes a problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a cogeneration heating and power generation system to solve the above-mentioned problems.
The utility model provides a technical scheme is: a cogeneration heating and power generation system, comprising: boiler, steam extraction turbine, backpressure turbine, high pressure heater, condenser, first heat exchanger, second heat exchanger, first temperature and pressure reducer, second temperature and pressure reducer, third temperature and pressure reducer and condensing tower, wherein, steam extraction turbine and backpressure turbine all with the boiler is connected for receiving the boiler and come the steam, steam extraction turbine is provided with steam extraction mouth and steam exhaust mouth, the steam extraction mouth through first pipeline with high pressure heater is connected, still pass through the second pipeline through first temperature and pressure reducer with the water inlet of first heat exchanger is connected, steam exhaust mouth of steam extraction turbine passes through the third pipeline through the condenser with the boiler is connected, backpressure turbine is provided with high pressure steam exhaust mouth and low pressure steam exhaust mouth, high pressure steam exhaust mouth with the low pressure steam exhaust mouth pass through fourth pipeline and fifth pipeline respectively through the second temperature and pressure reducer and the third temperature and pressure reducer with the water inlet of first heat exchanger is connected, the water outlet of the first heat exchanger is connected with the boiler through a sixth pipeline and is further connected with the boiler through a seventh pipeline and a second heat exchanger, the seventh pipeline passes through the condenser and comprises a cold source water inlet pipeline A and a cold source water outlet pipeline A, the cold source water outlet pipeline A is further connected with a water return port of the condensing tower through an eighth pipeline, the condensing tower is connected with the condenser through a self-circulation pipeline and is used for providing a cold water source for the condenser, the self-circulation pipeline comprises a cold source water inlet pipeline B and a cold source water outlet pipeline B, and the cold source water outlet pipeline B is further connected with the cold source water inlet pipeline A through a ninth pipeline.
Preferably, be provided with first valve on the first pipeline, be provided with the second valve on the second pipeline, be provided with the third valve on the fourth pipeline, be provided with the fourth valve on the fifth pipeline, be provided with the fifth valve on the sixth pipeline, be provided with the sixth valve on the cold source water inlet pipeline A, be provided with the seventh valve on the cold source outlet pipe way A, be provided with the eighth valve on the eighth pipeline, be provided with the ninth valve on the cold source water inlet pipeline B, the interval is provided with tenth valve and eleventh valve on the cold source outlet pipe way B, be provided with the twelfth valve on the ninth pipeline, the one end of twelfth valve with cold source water inlet pipeline A intercommunication, the other end with pipeline intercommunication between tenth valve and the eleventh valve.
Further preferably, a circulating pump is arranged on the cold source water inlet pipeline B.
The utility model provides a pair of cogeneration heating power generation system adopts one to take out a back of body steam turbine, and the union is the heat consumer and send vapour, can realize the cogeneration of two steam turbines, can satisfy the steam demand of heat consumer under the different operating modes, simultaneously, utilizes the exhaust steam of the interior exhaust steam turbine of condensing of condenser to be the return water heating of first heat exchanger, can effectively recycle the exhaust steam heat of the exhaust steam turbine of condensing of taking out, improves the economic benefits of power plant.
The utility model provides a pair of cogeneration heat supply power generation system, it is rational in infrastructure, through backpressure steam turbine and the joint heat supply electricity generation of condensing turbine of taking out, simultaneously, can guarantee the benefit maximize of power plant with the effective recycle of the steam extraction (exhaust steam) heat of condensing turbine of taking out.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and embodiments:
fig. 1 is a schematic structural diagram of a cogeneration heat and power system provided by the present invention;
fig. 2 is a running diagram of the cogeneration heat supply and power generation system provided by the present invention during the heating period;
fig. 3 is an operation diagram of the cogeneration heat supply and power generation system provided by the present invention during a non-heating period.
Detailed Description
The invention will be further explained below with reference to specific embodiments, without limiting the invention.
As shown in fig. 1 to 3, the utility model provides a cogeneration heating power generation system, including: boiler 1, steam extraction turbine 2, backpressure turbine 3, high pressure feed water heater 4, condenser 5, first heat exchanger 6, second heat exchanger 7, first temperature and pressure reducing device 81, second temperature and pressure reducing device 82, third temperature and pressure reducing device 83 and condensing tower 9, wherein, steam extraction turbine 2 and backpressure turbine 3 all with boiler 1 is connected for receiving boiler 1 and coming steam, steam extraction turbine 2 is provided with steam extraction opening 21 and steam exhaust opening 22, steam extraction opening 21 through first pipeline with high pressure feed water heater 4 is connected, still passes through the second pipeline first temperature and pressure reducing device 81 with the water inlet of first heat exchanger 6 is connected, steam extraction opening 22 of steam extraction turbine 2 passes through the third pipeline condenser 5 with boiler 1 is connected, backpressure turbine 3 is provided with high pressure steam exhaust opening 31 and low pressure steam exhaust opening 32, high pressure steam exhaust opening 31 with low pressure steam exhaust opening 32 passes through fourth pipeline and fifth pipeline respectively through second temperature and pressure steam exhaust opening 32 Temperature and pressure reducer 82 with third temperature and pressure reducer 83 with the water inlet of first heat exchanger 6 is connected, the delivery port of first heat exchanger 6 pass through the sixth pipeline with boiler 1 is connected, still is connected with boiler 1 through seventh pipeline and second heat exchanger 7, the seventh pipeline process condenser 5, including cold source inlet channel A and cold source outlet channel A, cold source outlet channel A still through the eighth pipeline with the return water mouth of condensing tower 9 is connected, condensing tower 9 through self-loopa pipeline with condenser 5 is connected, be used for doing condenser 5 provides the cold water source, self-loopa pipeline includes cold source inlet channel B and cold source outlet channel B, cold source outlet channel B still through the ninth pipeline with cold source inlet channel A connects.
This cogeneration heat supply power generation system jointly uses the steam turbine of taking out and the heat generation of backpressure steam turbine heat supply, through the on-off state of adjusting each pipeline, can jointly be for the heat consumer heat supply, can effectively recycle the exhaust steam heat of taking out the steam turbine during the heat supply, guarantees the benefit maximize of power plant. Specifically, the method comprises the following steps: when the heating period is running, as shown in fig. 2, the steam extraction turbine and the back pressure turbine both work, the exhaust steam of the steam extraction turbine is cooled by the condenser and then returns to the boiler, the high-pressure exhaust steam and the low-pressure exhaust steam of the back pressure turbine and the exhaust steam of the steam extraction turbine supply heat to users through the first heat exchanger, the return water after heat supply is low in temperature, part of the return water enters the condenser through the cold source water inlet pipeline A again, after exchanging heat with the exhaust steam of the steam extraction turbine in the condenser, enters the second heat exchanger through the cold source water outlet pipeline A to supply heat to the users, and then returns to the boiler, the other part of the return water directly returns to the boiler through the sixth pipeline to be heated again to do work, wherein the fifth valve can adjust the temperature of the water entering the second heat exchanger, the exhaust steam of the steam extraction turbine can be effectively recycled by heating the return water of the condenser, the economic benefit of the power plant is improved, when the heating period is running, adopt self-loopa pipeline to provide the cold source for the condenser, can guarantee the condensation efficiency to the steam turbine of taking out, when non-heating period moves, stop back pressure steam turbine, pressure reducer, as shown in fig. 3, the exhaust steam of taking out the steam turbine returns the boiler after the condenser cooling, the play water of condensing tower returns to the condensing tower in through cold source inlet pipe way B, cold source outlet pipe way B, ninth pipeline, cold source inlet pipe way A, cold source outlet pipe way A and eighth pipeline, can improve the condensation effect of condenser.
In order to adjust the on-off of each pipeline, as shown in fig. 1, a first valve 101 is arranged on the first pipeline, a second valve 102 is arranged on the second pipeline, a third valve 103 is arranged on the fourth pipeline, a fourth valve 104 is arranged on the fifth pipeline, a fifth valve 105 is arranged on the sixth pipeline, a sixth valve 106 is arranged on the cold source water inlet pipeline A, a seventh valve 107 is arranged on the cold source water outlet pipeline A, an eighth valve 108 is arranged on the eighth pipeline, a ninth valve 109 is arranged on the cold source water inlet pipeline B, a tenth valve 110 and an eleventh valve 111 are arranged on the cold source water outlet pipeline B at intervals, a twelfth valve 112 is arranged on the ninth pipeline, one end of the twelfth valve 112 is communicated with the cold source water inlet pipeline a, and the other end of the twelfth valve 112 is communicated with a pipeline between the tenth valve 110 and the eleventh valve 111. In the heating period, as shown in fig. 2, the eighth valve 108 and the twelfth valve 112 are closed, in the non-heating period, as shown in fig. 3, the second valve 102, the third valve 103, the fourth valve 104, the fifth valve 105, the sixth valve 106, the seventh valve 107, and the eleventh valve 111 are closed, and the first valve 101, the ninth valve 109, the tenth valve 110, the twelfth valve 112, and the eighth valve 108 are opened.
As shown in fig. 1, a circulation pump 10 is disposed on the cold source water inlet pipeline B.
The embodiments of the present invention are written in a progressive manner, emphasizing the differences of the various embodiments, and similar parts can be referred to each other.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (3)
1. A cogeneration heat and power system, comprising: boiler (1), extraction steam turbine (2), backpressure steam turbine (3), high pressure heater (4), condenser (5), first heat exchanger (6), second heat exchanger (7), first temperature and pressure reducer (81), second temperature and pressure reducer (82), third temperature and pressure reducer (83) and condensing tower (9), wherein, extraction steam turbine (2) and backpressure steam turbine (3) all with boiler (1) are connected for receiving boiler (1) and come the steam, extraction steam turbine (2) is provided with extraction opening (21) and steam exhaust opening (22), extraction opening (21) through first pipeline with high pressure heater (4) are connected, still through second pipeline through first temperature and pressure reducer (81) with the water inlet of first heat exchanger (6) is connected, steam exhaust opening (22) of extraction steam turbine (2) through third pipeline through condenser (5) with boiler (1) are connected, the back pressure turbine (3) is provided with a high-pressure exhaust port (31) and a low-pressure exhaust port (32), the high-pressure exhaust port (31) and the low-pressure exhaust port (32) pass through a fourth pipeline and a fifth pipeline respectively, a second temperature-reducing pressure reducer (82) and a third temperature-reducing pressure reducer (83) are connected with a water inlet of the first heat exchanger (6), a water outlet of the first heat exchanger (6) is connected with the boiler (1) through a sixth pipeline, the seventh pipeline is connected with the boiler (1) through a seventh pipeline and a second heat exchanger (7), the seventh pipeline passes through the condenser (5) and comprises a cold source water inlet pipeline A and a cold source water outlet pipeline A, the cold source water outlet pipeline A is also connected with a water return port of the condensing tower (9) through an eighth pipeline, the condensing tower (9) is connected with the condenser (5) through a self-circulation pipeline, the self-circulation pipeline comprises a cold source water inlet pipeline B and a cold source water outlet pipeline B, and the cold source water outlet pipeline B is further connected with the cold source water inlet pipeline A through a ninth pipeline.
2. A cogeneration heat and power system according to claim 1, wherein: a first valve (101) is arranged on the first pipeline, a second valve (102) is arranged on the second pipeline, a third valve (103) is arranged on the fourth pipeline, a fourth valve (104) is arranged on the fifth pipeline, a fifth valve (105) is arranged on the sixth pipeline, a sixth valve (106) is arranged on the cold source water inlet pipeline A, a seventh valve (107) is arranged on the cold source water outlet pipeline A, an eighth valve (108) is arranged on the eighth pipeline, a ninth valve (109) is arranged on the cold source water inlet pipeline B, a tenth valve (110) and an eleventh valve (111) are arranged on the cold source water outlet pipeline B at intervals, a twelfth valve (112) is arranged on the ninth pipeline, one end of the twelfth valve (112) is communicated with the cold source water inlet pipeline A, and the other end of the twelfth valve (112) is communicated with a pipeline between the tenth valve (110) and the eleventh valve (111).
3. A cogeneration heat and power system according to claim 2, wherein: and a circulating pump (10) is arranged on the cold source water inlet pipeline B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220734350.0U CN217080588U (en) | 2022-04-01 | 2022-04-01 | Cogeneration heating and power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220734350.0U CN217080588U (en) | 2022-04-01 | 2022-04-01 | Cogeneration heating and power generation system |
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| Publication Number | Publication Date |
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| CN217080588U true CN217080588U (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220734350.0U Active CN217080588U (en) | 2022-04-01 | 2022-04-01 | Cogeneration heating and power generation system |
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| CN (1) | CN217080588U (en) |
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2022
- 2022-04-01 CN CN202220734350.0U patent/CN217080588U/en active Active
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