CN117146254A - Heating system - Google Patents
Heating system Download PDFInfo
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- CN117146254A CN117146254A CN202310914163.XA CN202310914163A CN117146254A CN 117146254 A CN117146254 A CN 117146254A CN 202310914163 A CN202310914163 A CN 202310914163A CN 117146254 A CN117146254 A CN 117146254A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 149
- 238000000605 extraction Methods 0.000 claims description 99
- 239000003638 chemical reducing agent Substances 0.000 claims description 50
- 238000010248 power generation Methods 0.000 claims description 27
- 230000001105 regulatory effect Effects 0.000 claims description 24
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 description 17
- 229920006395 saturated elastomer Polymers 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
- F22G5/123—Water injection apparatus
Abstract
The utility model relates to a heating system, through set up heating module in heating system, with the first steam inlet end of heating module and the first steam outlet of boiler and the steam inlet connection of steam turbine, heating module's second steam inlet end and the first inlet connection of steam outlet of steam turbine and boiler, heating module's steam outlet and the steam inlet connection of heat supply box, heating module can be used for transmitting the steam of the first temperature that the boiler provided, and the steam of the second temperature of steam outlet of steam turbine, and generate the thermal medium of target temperature through the steam of first temperature and the steam of second temperature, and carry thermal medium to the heat supply box, like this, can effectively, and control the temperature of working medium in a flexible way through heating module, thereby can effectively promote heating system's heat supply reliability.
Description
Technical Field
The present disclosure relates to the field of heating technology, and in particular, to a heating system.
Background
The state advocates a high-efficiency and clean power generation technology, the development of cogeneration, and the realization of cogeneration central heating in a large-scale thermal power plant is a development trend in the present and future for a long time. With the continuous increase of the installed capacity of new energy sources such as domestic wind power generation, photovoltaic discharge and hydroelectric power generation, the thermal power generation is gradually changed into auxiliary service type discharge from main power generation. However, the increase of the installed capacity of a large amount of new energy causes the surplus of the electricity capacity. In order to consume the excess power, large thermal power plants need to participate in deep peak shaving. Under the condition that a large-scale thermal power plant participates in deep peak shaving, the operation of the generator set is reduced, and the heat supply requirement of a user cannot be met.
Disclosure of Invention
To achieve the above object, the present disclosure provides a heating system, the system comprising: the device comprises a power generation device, a heat supply assembly and a heat supply box;
the power generation device comprises a boiler and a steam turbine, wherein a steam outlet of the boiler is connected with a steam inlet of the steam turbine, and is used for generating power after the steam turbine is driven to rotate by the steam provided by the boiler and providing steam for the heat supply assembly;
the first steam inlet end of the heat supply assembly is connected with the steam outlet of the steam turbine and the first inlet of the boiler, the second steam inlet end of the heat supply assembly is connected with the first steam outlet of the boiler and the steam inlet of the steam turbine, the steam outlet of the heat supply assembly is connected with the steam inlet of the heat supply box and is used for transmitting the steam at the first temperature of the steam outlet of the steam turbine and the steam at the second temperature provided by the boiler, and a thermodynamic working medium at a target temperature is generated through the steam at the first temperature and the steam at the second temperature and is conveyed to the heat supply box, wherein the second temperature is higher than the first temperature;
the heat supply box is used for storing the thermal working medium with target temperature.
Optionally, the heat supply assembly includes a heat exchanger, a first heat supply section, and a second heat supply section;
one end of the first heat supply section is connected with a first steam inlet of the heat exchanger, and the other end of the first heat supply section is connected with a steam outlet of the steam turbine and the first inlet of the boiler and is used for transmitting steam at a second temperature of the steam outlet of the steam turbine;
one end of the second heat supply section is connected with a second steam inlet of the heat exchanger, and the other end of the second heat supply section is connected with a first steam outlet of the boiler and a steam inlet of the steam turbine and is used for transmitting steam at a first temperature provided by the boiler;
the steam outlet of the heat exchanger is connected with the steam inlet of the heat supply box and is used for carrying out heat exchange on the steam at the first temperature conveyed by the first heat supply section and the steam at the second temperature conveyed by the second heat supply section, so that the thermodynamic working medium in the heat supply box reaches the target temperature.
Optionally, the first heating section comprises a first temperature-reducing pressure reducer, a first steam extraction adjusting valve, a first steam extraction gate valve and a second steam extraction gate valve;
the steam inlet of the first steam extraction gate valve is connected with the outlet of the first steam extraction gate valve after the first steam extraction gate valve and the second steam extraction gate valve are connected in series, and the steam outlet is connected with the steam inlet of the first temperature and pressure reducer;
the steam inlet of the first steam extraction gate valve is connected with the steam outlet of the high-pressure cylinder of the steam turbine and the first inlet of the boiler;
the steam outlet of the first temperature and pressure reducing device is connected with the first steam inlet of the heat exchanger.
Optionally, the first heat supply section further comprises: a first temperature reduction section, the first temperature reduction section comprising: the device comprises a booster water pump, a first temperature-reducing and regulating valve, a first temperature-reducing gate valve, a second temperature-reducing gate valve, a third temperature-reducing gate valve, a fourth temperature-reducing gate valve and a fifth temperature-reducing gate valve;
the water outlet of the first temperature-reducing gate valve, the first temperature-reducing regulating valve and the second temperature-reducing gate valve which are sequentially connected in series is connected with the water inlet of the third temperature-reducing gate valve and the water inlet of the fifth temperature-reducing gate valve, and the water inlet is used for being connected with the power generation device;
the water outlet of the third temperature-reducing gate valve is connected with one end of the booster water pump, and the other end of the booster water pump is connected with the water inlet of the fourth temperature-reducing gate valve;
and the water outlet of the fourth temperature-reducing gate valve is connected with the water outlet of the fifth temperature-reducing gate valve and the water inlet of the first temperature-reducing pressure reducer.
Optionally, the second heating section includes: the second steam extraction adjusting valve, the third steam extraction gate valve, the fourth steam extraction gate valve, the fifth steam extraction gate valve and the sixth steam extraction gate valve;
the steam inlet of the second steam extraction adjusting valve is connected with the steam outlet of the third steam extraction gate valve, and the steam outlet of the second steam extraction adjusting valve is connected with the steam inlet of the fourth steam extraction gate valve;
the steam inlet of the third steam extraction gate valve is connected with the first steam outlet of the boiler and the steam inlet of the medium pressure cylinder of the steam turbine;
the steam outlet of the fourth steam extraction gate valve is connected with the steam inlet of the fifth steam extraction gate valve;
the steam outlet of the fifth steam extraction gate valve is connected with the steam inlet of the third steam extraction regulating valve;
the steam outlet of the third steam extraction adjusting valve is connected with the steam inlet of the sixth steam extraction gate valve;
and a steam outlet of the sixth steam extraction gate valve is connected with a second steam inlet of the heat exchanger.
Optionally, the second heat supply section further comprises: a second temperature and pressure reducer; the outlet of the second temperature and pressure reducer is connected with the inlet of the heating box, and the steam inlet of the second temperature and pressure reducer is connected between the steam outlet of the fourth steam extraction gate valve and the steam inlet of the fifth steam extraction gate valve.
Optionally, the second heat supply section further comprises: a second temperature reduction section; the water outlet of the second temperature reduction section is connected with the water inlet of the second temperature reduction pressure reducer, and the water outlet of the second temperature reduction section is used for being connected with the power generation device.
Optionally, the second temperature reducing section includes: the second temperature reducing and regulating valve, the sixth temperature reducing gate valve and the seventh temperature reducing gate valve;
the water inlet of the second temperature-reducing and regulating valve is connected with the water outlet of the sixth temperature-reducing gate valve, and the water outlet of the second temperature-reducing and regulating valve is connected with the water inlet of the seventh temperature-reducing gate valve;
the water inlet of the sixth temperature-reducing gate valve is used for connecting the power generation device;
and the water outlet of the seventh temperature-reducing gate valve is connected with the water inlet of the second temperature-reducing pressure reducer.
Optionally, the system further comprises: an eighth temperature reducing gate valve; the water inlet of the eighth temperature-reducing gate valve is connected with the water outlet of the seventh temperature-reducing gate valve and the water inlet of the second temperature-reducing pressure reducer, and the water outlet of the eighth temperature-reducing gate valve is connected with the water outlet of the fourth temperature-reducing gate valve, the water outlet of the fifth temperature-reducing gate valve and the water inlet of the first temperature-reducing pressure reducer.
Optionally, the power generation device includes: the device comprises a first main valve, a second main valve, a generator, a condenser, a condensing pump, a low-pressure heater, a deaerator, a water supply pump and a high-pressure heater;
the steam inlet of the high-pressure cylinder of the steam turbine is connected with the second steam outlet of the boiler, the steam turbine is connected with the generator through a flange, and the steam outlet of the low-pressure cylinder of the steam turbine is connected with the steam inlet of the condenser;
the first main valve is connected between a first steam outlet of the boiler, a steam inlet of the third steam extraction gate valve and a steam inlet of a medium pressure cylinder of the steam turbine;
the second main valve is connected between a steam inlet of a high-pressure cylinder of the steam turbine and a second steam outlet of the boiler;
the condensed water outlet of the condenser is connected with the water inlet of the low-pressure heater through the condensed pump;
the water outlet of the low-pressure heater is connected with the water inlet of the deaerator;
the water outlet of the deaerator is connected with the water inlet of the high-pressure heater through the water supply pump;
the water outlet of the high-pressure heater is connected with the second inlet of the boiler;
the water inlet of the first temperature reducing gate valve is connected with the water inlet of the low-pressure heater and the water outlet of the condensation pump;
and the water inlet of the sixth temperature reducing gate valve is connected with the water outlet of the high-pressure heater and the second inlet of the boiler.
According to the technical scheme, the heat supply assembly is arranged in the heat supply system, the first steam inlet end of the heat supply assembly is connected with the first steam outlet of the boiler and the steam inlet of the steam turbine, the second steam inlet end of the heat supply assembly is connected with the steam outlet of the steam turbine and the first inlet of the boiler, the steam outlet of the heat supply assembly is connected with the steam inlet of the heat supply box, the heat supply assembly can be used for transmitting the first temperature steam provided by the boiler and the second temperature steam of the steam outlet of the steam turbine, the heat working medium with the target temperature is generated through the first temperature steam and the second temperature steam, and the heat working medium is conveyed to the heat supply box, so that the temperature of the heat working medium can be effectively and flexibly controlled through the heat supply assembly, and the heat supply reliability of the heat supply system can be effectively improved.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
FIG. 1 is a schematic diagram of a heating system according to an exemplary embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a heating system according to the embodiment of FIG. 1 of the present disclosure;
FIG. 3 is a schematic illustration of the structure of a first heat supply section according to an exemplary embodiment of the present disclosure;
FIG. 4 is a schematic diagram of a second heat supply section according to an exemplary embodiment of the present disclosure;
fig. 5 is a schematic diagram of another heating system according to an exemplary embodiment of the present disclosure.
Description of the reference numerals
100-heating components, 101-heat exchangers, 102-first heat supply sections, 1021-first temperature and pressure reducers, 1022-first temperature reduction sections, 103-second heat supply sections, 1031-second temperature and pressure reducers and 1032-second temperature reduction sections; 200-power generation device, 201-boiler, 202-steam turbine, 203-first main valve, 204-second main valve, 205-generator, 206-condenser, 207-condensing pump, 208-low pressure heater, 209-deaerator, 210-water feeding pump and 211-high pressure heater; 300-heat supply box.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
FIG. 1 is a schematic diagram of a heating system according to an exemplary embodiment of the present disclosure, as shown in FIG. 1, which may include: a heating assembly 100, a power generation device 200, and a heating tank 300; the power generation device 200 may include a boiler 201 and a steam turbine 202, wherein a steam outlet of the boiler 201 is connected to a steam inlet of the steam turbine 202, for generating power by driving the steam turbine 202 to rotate by the steam provided from the boiler 201, and providing the heat supply assembly 100 with the steam; the first steam inlet end of the heating assembly 100 may be connected to the steam outlet of the steam turbine 202 and the first inlet of the boiler 201, the second steam inlet end of the heating assembly 100 may be connected to the first steam outlet of the boiler 201 and the steam inlet of the steam turbine 202, the steam outlet of the heating assembly 100 may be connected to the steam inlet of the heating box 300, and the first temperature steam of the steam outlet of the steam turbine 202 and the second temperature steam provided by the boiler 201 may be transmitted, and the target temperature thermodynamic working medium may be generated by the first temperature steam and the second temperature steam and transmitted to the heating box 300, wherein the second temperature is greater than the first temperature; the heat supply tank 300 is used for storing a thermodynamic working medium at a target temperature.
The heat supply system may directly use the steam exhausted from the steam turbine 202 for heat supply through the heat supply assembly 100, or may use the steam exhausted from the steam turbine 202 for heat supply after heat exchange with the high temperature steam provided by the boiler 201 through the heat supply assembly 100. The target temperature may be a temperature set according to the needs of the thermal user, for example, the temperature required in the evaporation and crystallization process of the salt preparation is about 120 ℃ to 130 ℃, the target temperature may be set to 120 ℃ to 130 ℃, and if the temperature loss of the thermal working medium in the transmission engineering is considered, the target temperature may also be set to be greater than 120 ℃; it is also possible that the heating system can obtain the highest temperature by controlling the heating assembly 100 without affecting the power generation.
The boiler 201 converts the input water into high-temperature and high-pressure steam through a heating mode, the steam is transmitted to the steam turbine 202 through a pipeline, the steam flows rapidly in the steam turbine 202 to drive the steam turbine 202 to rotate so as to generate mechanical energy and then generate electricity, a first steam inlet end of the heat supply assembly 100 is connected with a first steam outlet of the boiler 201 and a steam inlet of the steam turbine 202, the first temperature steam provided by the boiler 201 is transmitted, a second steam inlet end of the heat supply assembly 100 is connected with a steam outlet of the steam turbine 202 and the first inlet of the boiler 201, the second temperature steam of the steam outlet of the steam turbine 202 is transmitted, the first temperature steam and the second temperature steam are subjected to heat exchange so as to obtain a thermal working medium with a target temperature, and the thermal working medium is transmitted to the heat supply box 300.
According to the technical scheme, the heat supply assembly is arranged in the heat supply system, the first steam inlet end of the heat supply assembly is connected with the first steam outlet of the boiler and the steam inlet of the steam turbine, the second steam inlet end of the heat supply assembly is connected with the steam outlet of the steam turbine and the first inlet of the boiler, the steam outlet of the heat supply assembly is connected with the steam inlet of the heat supply box, the heat supply assembly can be used for transmitting the first temperature steam provided by the boiler and the second temperature steam of the steam outlet of the steam turbine, the heat working medium with the target temperature is generated through the first temperature steam and the second temperature steam, and the heat working medium is conveyed to the heat supply box, so that the temperature of the heat working medium can be effectively and flexibly controlled through the heat supply assembly, the heat supply capacity and reliability of the heat supply system are improved, and the economic benefit of a power station is improved.
FIG. 2 is a schematic diagram of a heating system according to the present disclosure, shown in FIG. 1, with a heating assembly 100 including a heat exchanger 101, a first heat supply section 102, and a second heat supply section 103, as shown in FIG. 2; one end of the first heat supply section 102 is connected with a first steam inlet of the heat exchanger 101, and the other end of the first heat supply section 102 is connected with a steam outlet of the steam turbine 202 and a first inlet of the boiler 201, and is used for transmitting steam at a first temperature of the steam outlet of the steam turbine 202; one end of the second heat supply section 103 is connected with a second steam inlet of the heat exchanger 101, and the other end of the second heat supply section 103 is connected with a first steam outlet of the boiler 201 and a steam inlet of the steam turbine 202, and is used for transmitting steam at a second temperature provided by the boiler 201; the steam outlet of the heat exchanger 101 is connected with the steam inlet of the heat supply tank 300, and is used for performing heat exchange between the steam at the first temperature conveyed by the first heat supply section 102 and the steam at the second temperature conveyed by the second heat supply section 103, so that the thermal working medium in the heat supply tank 300 reaches the target temperature.
Wherein, as shown in fig. 3, fig. 3 is a schematic structural view of a first heat supply section according to an exemplary embodiment of the present disclosure, the first heat supply section 102 may include a first temperature and pressure reducer 1021, a first steam extraction valve, a first steam extraction gate valve, and a second steam extraction gate valve; the steam outlet is connected with the steam inlet of the first temperature and pressure reducer; the steam inlet of the first steam extraction gate valve is connected with the steam outlet of the high-pressure cylinder of the steam turbine 202 and the first inlet of the boiler 201; the steam outlet of the first temperature and pressure reducer is connected to the first steam inlet of the heat exchanger 101.
It should be noted that, the two ends of the first steam extraction valve are respectively provided with a first steam extraction gate valve and a second steam extraction gate valve, the first steam extraction valve can be used for controlling the flow rate and the pressure of steam in the first heat supply section 102, the first steam extraction gate valve and the second steam extraction gate valve can play a role in protecting the first steam extraction valve, and under the condition that the first steam extraction valve fails, the first steam extraction gate valve and the second steam extraction gate valve are closed at the same time, so that the first steam extraction valve is overhauled or maintained. The first temperature and pressure reducer may reduce the steam parameters of the first heat supply section 102 to a predetermined temperature range by spraying cooling water inputted from the water inlet into the steam of the steam pipe in a mist form from the nozzle, and transfer the steam into the heat exchanger 101.
According to the scheme, the first temperature and pressure reducer is arranged in the first heat supply section, so that the temperature of steam in the first heat supply section can be effectively controlled, and the heat supply range of the heat supply system can be enlarged under the condition that the heat supply reliability is guaranteed.
Still referring to fig. 3, for example, the first heat supply section 102 further includes: a first temperature reduction section 1022, the first temperature reduction section 1022 comprising: the device comprises a booster water pump, a first temperature-reducing and regulating valve, a first temperature-reducing gate valve, a second temperature-reducing gate valve, a third temperature-reducing gate valve, a fourth temperature-reducing gate valve and a fifth temperature-reducing gate valve; the water outlet of the first temperature-reducing gate valve, the first temperature-reducing regulating valve and the second temperature-reducing gate valve which are sequentially connected in series is connected with the water inlet of the third temperature-reducing gate valve and the water inlet of the fifth temperature-reducing gate valve, and the water inlet is used for being connected with the power generation device 200; the water outlet of the third temperature-reducing gate valve is connected with one end of a booster water pump, and the other end of the booster water pump is connected with the water inlet of the fourth temperature-reducing gate valve; the water outlet of the fourth temperature-reducing gate valve is connected with the water outlet of the fifth temperature-reducing gate valve and the water inlet of the first temperature-reducing pressure reducer.
It should be noted that the first temperature-reducing and regulating valve may be used to control the flow rate and pressure of the cooling water in the first temperature-reducing section 1022, and two ends of the first temperature-reducing and regulating valve are respectively provided with the first temperature-reducing gate valve and the second temperature-reducing gate valve, so as to play a role in protecting the first temperature-reducing and regulating valve. The booster pump can start the booster pump under the condition that the cooling water pressure in the first temperature reduction section 1022 is insufficient, increase the pressure of the cooling water in the first temperature reduction section 1022, and convey the cooling water to the first temperature reduction pressure reducer, the both sides of the booster pump are respectively provided with a third temperature reduction gate valve and a fourth temperature reduction gate valve, the effect of protecting the booster pump can be achieved, a fifth temperature reduction gate valve is arranged in a bypass of the booster pump, the booster pump is closed under the condition that the cooling water pressure in the first temperature reduction section 1022 is sufficient, and the cooling water in the first temperature reduction section 1022 is conveyed to the first temperature reduction pressure reducer 1021 through the bypass.
According to the scheme, the first temperature reduction section is added in the first heat supply section, the condensed water in the power generation device is mixed with the steam in the first heat supply section, and the temperature of the steam in the first heat supply section is controlled, so that the low-temperature condensed water in the power generation device can be effectively utilized, the heat supply cost is reduced, and the economic benefit of a power station is improved.
As shown in fig. 4, fig. 4 is a schematic diagram of a second heat supply section according to an exemplary embodiment of the present disclosure, the second heat supply section 103 comprising: the second steam extraction adjusting valve, the third steam extraction gate valve, the fourth steam extraction gate valve, the fifth steam extraction gate valve and the sixth steam extraction gate valve; the steam inlet of the second steam extraction adjusting valve is connected with the steam outlet of the third steam extraction gate valve, and the steam outlet of the second steam extraction adjusting valve is connected with the steam inlet of the fourth steam extraction gate valve; the steam inlet of the third steam extraction gate valve is connected with the first steam outlet of the boiler 201 and the steam inlet of the medium pressure cylinder of the steam turbine 202; the steam outlet of the fourth steam extraction gate valve is connected with the steam inlet of the fifth steam extraction gate valve; the steam outlet of the fifth steam extraction gate valve is connected with the steam inlet of the third steam extraction regulating valve; the steam outlet of the third steam extraction adjusting valve is connected with the steam inlet of the sixth steam extraction gate valve; the steam outlet of the sixth steam extraction gate valve is connected with the second steam inlet of the heat exchanger 101.
It should be noted that, the two sides of the second steam extraction valve are respectively provided with a third steam extraction gate valve and a fourth steam extraction gate valve, the two sides of the third steam extraction valve are respectively provided with a fifth steam extraction gate valve and a sixth steam extraction gate valve, the second steam extraction valve can be used for controlling the flow rate and pressure of steam entering the second heat supply section 103, and the third steam extraction valve can be used for controlling the flow rate and pressure of steam delivered to the heat exchanger 101 by the second heat supply section 103. The second heat supply section 103 transfers the steam of the first steam outlet of the boiler 201 to the heat exchanger 101, and exchanges heat with the steam transferred to the heat exchanger 101 by the first heat supply section 102.
Also taking as an example fig. 4, the second heat supply section 103 further includes: a second temperature and pressure reducer 1031; an outlet of the second temperature and pressure reducer 1031 is connected with an inlet of the heating box 300, and a steam inlet of the second temperature and pressure reducer 1031 is connected between a steam outlet of the fourth steam extraction gate valve and a steam inlet of the fifth steam extraction gate valve.
The second temperature and pressure reducer 1031 may be used to control the temperature and pressure of the steam in the second heat supply section 103 through the bypass where the second temperature and pressure reducer is located and to send the steam into the heat supply tank 300 so that the temperature of the steam in the heat supply tank 300 reaches the target temperature, or may be used to control the temperature and pressure of part of the steam in the second heat supply section 102 and directly send the steam into the heat supply tank 300 so that the temperature of the steam in the heat supply tank 300 reaches the target temperature in the event of a failure of the second heat supply section 102.
According to the scheme, the second temperature and pressure reducer is arranged in the bypass of the second heat supply section, so that the temperature of steam in the second heat supply section can be effectively controlled, and the reliability of a heat supply system is improved.
Also as illustrated in fig. 4, the second heat supply section 103 may further include: a second reduced temperature section 1032; the water outlet of the second temperature-reducing section 1032 is connected with the water inlet of the second temperature-reducing pressure reducer 1031, and the water outlet of the second temperature-reducing section 1032 is used for connecting the power generation device 200.
Wherein the second reduced temperature section 1032 may comprise: the second temperature reducing and regulating valve, the sixth temperature reducing gate valve and the seventh temperature reducing gate valve; the water inlet of the second temperature-reducing and regulating valve is connected with the water outlet of the sixth temperature-reducing gate valve, and the water outlet of the second temperature-reducing and regulating valve is connected with the water inlet of the seventh temperature-reducing gate valve; the water inlet of the sixth temperature reducing gate valve is used for connecting the power generation device 200; the water outlet of the seventh temperature-reducing gate valve is connected with the water inlet of the second temperature-reducing pressure reducer 1031.
It should be noted that the second temperature-reducing and regulating valve may be used to control the flow rate and pressure of the cooling water in the second temperature-reducing section 1032, and the two ends of the second temperature-reducing and regulating valve are respectively provided with a sixth temperature-reducing gate valve and a seventh temperature-reducing gate valve, so as to play a role in protecting the second temperature-reducing and regulating valve.
According to the scheme, the heat exchanger, the first heat supply section and the second heat supply section are arranged in the heat supply system, the first heat supply section is connected with the steam outlet of the steam turbine and the first inlet of the boiler, the steam at the first temperature discharged by the steam turbine is conveyed to the heat exchanger, the second heat supply section is connected with the first steam outlet of the boiler and the steam inlet of the steam turbine, the steam at the second temperature provided by the boiler is conveyed to the heat exchanger, the heat exchanger is connected with the heat supply box, the heat exchange is carried out on the steam at the first temperature conveyed by the first heat supply section and the steam at the second temperature conveyed by the second heat supply section, and the heat exchanged steam is conveyed to the heat supply box.
Fig. 5 is a schematic diagram of another heating system according to an exemplary embodiment of the present disclosure, as shown in fig. 5, the system further comprising: an eighth temperature reducing gate valve; the water inlet of the eighth temperature-reducing gate valve is connected with the water outlet of the seventh temperature-reducing gate valve and the water inlet of the second temperature-reducing pressure reducer 1031, and the water outlet of the eighth temperature-reducing gate valve is connected with the water outlet of the fourth temperature-reducing gate valve, the water outlet of the fifth temperature-reducing gate valve and the water inlet of the first temperature-reducing pressure reducer.
In the case that the first temperature-reducing section 1022 fails, the water inlet of the eighth temperature-reducing gate valve is connected to the water outlet of the seventh temperature-reducing gate valve and the water inlet of the second temperature-reducing pressure reducer 1031, so that the second temperature-reducing section 1032 is conducted to the first temperature-reducing pressure reducer 1021, and cooling water of the second temperature-reducing section 1032 can be conveyed to the first temperature-reducing pressure reducer 1021 to control the steam temperature in the first temperature-reducing pressure reducer 1021; in the case that the second temperature-reducing section 1032 fails, the water outlet of the eighth temperature-reducing gate valve is connected with the water outlet of the fourth temperature-reducing gate valve, the water outlet of the fifth temperature-reducing gate valve and the water inlet of the first temperature-reducing pressure reducer, and the water inlets of the first temperature-reducing section 1022 and the second temperature-reducing pressure reducer 1031 are conducted, so that cooling water in the first temperature-reducing section 1022 can be conveyed to the second temperature-reducing pressure reducer 1031 to control the steam temperature in the second temperature-reducing pressure reducer 1031.
Above scheme, through setting up eighth temperature reduction gate valve in heating system, with first temperature reduction section and second temperature reduction section intercommunication through eighth temperature reduction gate valve, under the circumstances that first temperature reduction Duan Huo second temperature reduction section breaks down, close the valve in second temperature reduction section or the first temperature reduction section, switch on eighth temperature reduction gate valve, the second temperature reduction section provides cooling water for first temperature reduction pressure reducer or first temperature reduction section provides cooling water for second temperature reduction pressure reducer, in order to control the temperature of steam, in this way, can reduce effectively the influence that the trouble caused by first temperature reduction Duan Huo second temperature reduction section, be favorable to reducing heating system's maintenance degree of difficulty, thereby can improve heating system's reliability.
Still taking fig. 5 as an example, the power generation device 200 includes: a first main valve 203, a second main valve 204, a generator 205, a condenser 206, a condensation pump 207, a low-pressure heater 208, a deaerator 209, a feed pump 210, and a high-pressure heater 211; the steam inlet of the high-pressure cylinder of the steam turbine 202 is connected with the second steam outlet of the boiler 201, the steam turbine 202 is connected with the generator 205 through a flange, and the steam outlet of the low-pressure cylinder of the steam turbine 202 is connected with the steam inlet of the condenser 206; the first main valve 203 is connected between the first steam outlet of the boiler 201 and the steam inlet of the third steam extraction gate valve and the steam inlet of the intermediate pressure cylinder of the steam turbine 202; the second main valve 204 is connected between the steam inlet of the high pressure cylinder of the steam turbine 202 and the second steam outlet of the boiler 201; the condensed water outlet of the condenser 206 is connected with the water inlet of the low-pressure heater 208 through a condensed pump 207; the water outlet of the low-pressure heater 208 is connected with the water inlet of the deaerator 209; the water outlet of the deaerator 209 is connected with the water inlet of the high-pressure heater 211 through the water supply pump 210; the water outlet of the high-pressure heater 211 is connected with the second inlet of the boiler 201; the water inlet of the first temperature reducing gate valve is connected with the water inlet of the low-pressure heater 208 and the water outlet of the condensation pump 207; the water inlet of the sixth temperature reducing gate valve is connected with the water outlet of the high pressure heater 211 and the second inlet of the boiler 201.
The first main valve 203 may control the flow rate and pressure of the steam delivered from the boiler 201 to the pressure cylinder in the turbine 202, and the second main valve 204 may control the flow rate and pressure of the steam delivered from the boiler 201 to the pressure cylinder in the turbine 202. The condenser 206 can condense the residual heat steam discharged from the steam turbine 202 into saturated cooling water, and the saturated cooling water is conveyed to the low-pressure heater 208 and the first temperature reduction section 1022 through the condensation pump 207, the low-pressure heater 208 exchanges heat with the saturated cooling water, heats the saturated cooling water and conveys the saturated cooling water to the deaerator 209, the deaerator 209 can remove oxygen and other non-condensable gases in the saturated water so as to ensure the quality of water supply, the treated saturated water is conveyed to the high-pressure heater 211 through the water supply pump 210, the high-pressure heater 211 continuously heats the saturated water, the heated warm water is conveyed into the boiler 201 from the second inlet of the boiler 201, and the low-pressure heater 208 and the high-pressure heater 211 respectively heat the saturated water to reduce the temperature difference between the water supply water of the boiler 201 and the heated surface of the boiler 201.
According to the technical scheme, the heat supply assembly is arranged in the heat supply system, the first steam inlet end of the heat supply assembly is connected with the first steam outlet of the boiler and the steam inlet of the steam turbine, the second steam inlet end of the heat supply assembly is connected with the steam outlet of the steam turbine and the first inlet of the boiler, the steam outlet of the heat supply assembly is connected with the steam inlet of the heat supply box, the heat supply assembly can be used for transmitting the first temperature steam provided by the boiler and the second temperature steam of the steam outlet of the steam turbine, the heat working medium with the target temperature is generated through the first temperature steam and the second temperature steam, and the heat working medium is conveyed to the heat supply box, so that the temperature of the heat working medium can be effectively and flexibly controlled through the heat supply assembly, and the heat supply reliability of the heat supply system can be effectively improved.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure. In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and the various possible combinations are not described in detail in this disclosure.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (10)
1. A heating system, the system comprising: a heating assembly, a power generation device and a heating box;
the power generation device comprises a boiler and a steam turbine, wherein a steam outlet of the boiler is connected with a steam inlet of the steam turbine, and is used for generating power after the steam turbine is driven to rotate by the steam provided by the boiler and providing steam for the heat supply assembly;
the first steam inlet end of the heat supply assembly is connected with the steam outlet of the steam turbine and the first inlet of the boiler, the second steam inlet end of the heat supply assembly is connected with the first steam outlet of the boiler and the steam inlet of the steam turbine, the steam outlet of the heat supply assembly is connected with the steam inlet of the heat supply box and is used for transmitting the steam at the first temperature of the steam outlet of the steam turbine and the steam at the second temperature provided by the boiler, and a thermodynamic working medium at a target temperature is generated through the steam at the first temperature and the steam at the second temperature and is conveyed to the heat supply box, wherein the second temperature is higher than the first temperature;
the heat supply box is used for storing a thermodynamic working medium with target temperature.
2. A heating system according to claim 1, wherein the heating assembly comprises a heat exchanger, a first heat supply section and a second heat supply section;
one end of the first heat supply section is connected with a first steam inlet of the heat exchanger, and the other end of the first heat supply section is connected with a steam outlet of the steam turbine and a first inlet of the boiler and is used for transmitting steam at a first temperature of the steam outlet of the steam turbine;
one end of the second heat supply section is connected with a second steam inlet of the heat exchanger, and the other end of the second heat supply section is connected with a first steam outlet of the boiler and a steam inlet of the steam turbine and is used for transmitting steam at a second temperature provided by the boiler;
the steam outlet of the heat exchanger is connected with the steam inlet of the heat supply box and is used for carrying out heat exchange on the steam at the first temperature conveyed by the first heat supply section and the steam at the second temperature conveyed by the second heat supply section, so that the thermodynamic working medium in the heat supply box reaches the target temperature.
3. The heating system of claim 2, wherein the first heating section comprises a first reduced temperature and pressure reducer, a first extraction steam valve, a first extraction steam gate valve, and a second extraction steam gate valve;
the steam inlet of the first steam extraction gate valve is connected with the outlet of the first steam extraction gate valve after the first steam extraction gate valve and the second steam extraction gate valve are connected in series, and the steam outlet is connected with the steam inlet of the first temperature and pressure reducer;
the steam inlet of the first steam extraction gate valve is connected with the steam outlet of the high-pressure cylinder of the steam turbine and the first inlet of the boiler;
the steam outlet of the first temperature and pressure reducing device is connected with the first steam inlet of the heat exchanger.
4. A heating system according to claim 3, wherein the first heat supply section further comprises: a first temperature reduction section, the first temperature reduction section comprising: the device comprises a booster water pump, a first temperature-reducing and regulating valve, a first temperature-reducing gate valve, a second temperature-reducing gate valve, a third temperature-reducing gate valve, a fourth temperature-reducing gate valve and a fifth temperature-reducing gate valve;
the water outlet of the first temperature-reducing gate valve, the first temperature-reducing regulating valve and the second temperature-reducing gate valve which are sequentially connected in series is connected with the water inlet of the third temperature-reducing gate valve and the water inlet of the fifth temperature-reducing gate valve, and the water inlet is used for being connected with the power generation device;
the water outlet of the third temperature-reducing gate valve is connected with one end of the booster water pump, and the other end of the booster water pump is connected with the water inlet of the fourth temperature-reducing gate valve;
and the water outlet of the fourth temperature-reducing gate valve is connected with the water outlet of the fifth temperature-reducing gate valve and the water inlet of the first temperature-reducing pressure reducer.
5. A heating system according to claim 4, wherein the second heating section comprises: the second steam extraction adjusting valve, the third steam extraction gate valve, the fourth steam extraction gate valve, the fifth steam extraction gate valve and the sixth steam extraction gate valve;
the steam inlet of the second steam extraction adjusting valve is connected with the steam outlet of the third steam extraction gate valve, and the steam outlet of the second steam extraction adjusting valve is connected with the steam inlet of the fourth steam extraction gate valve;
the steam inlet of the third steam extraction gate valve is connected with the first steam outlet of the boiler and the steam inlet of the medium pressure cylinder of the steam turbine;
the steam outlet of the fourth steam extraction gate valve is connected with the steam inlet of the fifth steam extraction gate valve;
the steam outlet of the fifth steam extraction gate valve is connected with the steam inlet of the third steam extraction regulating valve;
the steam outlet of the third steam extraction adjusting valve is connected with the steam inlet of the sixth steam extraction gate valve;
and a steam outlet of the sixth steam extraction gate valve is connected with a second steam inlet of the heat exchanger.
6. A heating system according to claim 5, wherein the second heat supply section further comprises: a second temperature and pressure reducer; the outlet of the second temperature and pressure reducer is connected with the inlet of the heating box, and the steam inlet of the second temperature and pressure reducer is connected between the steam outlet of the fourth steam extraction gate valve and the steam inlet of the fifth steam extraction gate valve.
7. A heating system in accordance with claim 6, wherein said second heat supply section further comprises: a second temperature reduction section; the water outlet of the second temperature reduction section is connected with the water inlet of the second temperature reduction pressure reducer, and the water outlet of the second temperature reduction section is used for being connected with the power generation device.
8. A heating system according to claim 7, wherein the second temperature reduction section comprises: the second temperature reducing and regulating valve, the sixth temperature reducing gate valve and the seventh temperature reducing gate valve;
the water inlet of the second temperature-reducing and regulating valve is connected with the water outlet of the sixth temperature-reducing gate valve, and the water outlet of the second temperature-reducing and regulating valve is connected with the water inlet of the seventh temperature-reducing gate valve;
the water inlet of the sixth temperature-reducing gate valve is used for connecting the power generation device;
and the water outlet of the seventh temperature-reducing gate valve is connected with the water inlet of the second temperature-reducing pressure reducer.
9. A heating system according to claim 8, wherein the system further comprises: an eighth temperature reducing gate valve; the water inlet of the eighth temperature-reducing gate valve is connected with the water outlet of the seventh temperature-reducing gate valve and the water inlet of the second temperature-reducing pressure reducer, and the water outlet of the eighth temperature-reducing gate valve is connected with the water outlet of the fourth temperature-reducing gate valve, the water outlet of the fifth temperature-reducing gate valve and the water inlet of the first temperature-reducing pressure reducer.
10. A heating system according to claim 9, wherein the power generation means comprises: the device comprises a first main valve, a second main valve, a generator, a condenser, a condensing pump, a low-pressure heater, a deaerator, a water supply pump and a high-pressure heater;
the steam inlet of the high-pressure cylinder of the steam turbine is connected with the second steam outlet of the boiler, the steam turbine is connected with the generator through a flange, and the steam outlet of the low-pressure cylinder of the steam turbine is connected with the steam inlet of the condenser;
the first main valve is connected between a first steam outlet of the boiler, a steam inlet of the third steam extraction gate valve and a steam inlet of a medium pressure cylinder of the steam turbine;
the second main valve is connected between a steam inlet of a high-pressure cylinder of the steam turbine and a second steam outlet of the boiler;
the condensed water outlet of the condenser is connected with the water inlet of the low-pressure heater through the condensed pump;
the water outlet of the low-pressure heater is connected with the water inlet of the deaerator;
the water outlet of the deaerator is connected with the water inlet of the high-pressure heater through the water supply pump;
the water outlet of the high-pressure heater is connected with the second inlet of the boiler;
the water inlet of the first temperature reducing gate valve is connected with the water inlet of the low-pressure heater and the water outlet of the condensation pump;
and the water inlet of the sixth temperature reducing gate valve is connected with the water outlet of the high-pressure heater and the second inlet of the boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310914163.XA CN117146254A (en) | 2023-07-21 | 2023-07-21 | Heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310914163.XA CN117146254A (en) | 2023-07-21 | 2023-07-21 | Heating system |
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| CN117146254A true CN117146254A (en) | 2023-12-01 |
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| CN202310914163.XA Pending CN117146254A (en) | 2023-07-21 | 2023-07-21 | Heating system |
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| CN (1) | CN117146254A (en) |
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2023
- 2023-07-21 CN CN202310914163.XA patent/CN117146254A/en active Pending
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