CN208154573U - Peak load shifting integrates heating system - Google Patents
Peak load shifting integrates heating system Download PDFInfo
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- CN208154573U CN208154573U CN201821211018.6U CN201821211018U CN208154573U CN 208154573 U CN208154573 U CN 208154573U CN 201821211018 U CN201821211018 U CN 201821211018U CN 208154573 U CN208154573 U CN 208154573U
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Abstract
The utility model relates to heats, and in particular to a kind of integrated heating system of peak load shifting, system include electricity generation system, and electricity generation system passes through pipeline output par, c remnants thermal energy to heat supply network for converting heat into electric energy；Heat supply network, heat supply network include circulation line, and the circulation line of heat supply network is equipped with heat exchanger, hold over system, primary user end and second level heating system, wherein heat supply network can be carried out heat exchange by the residual heat of heat exchanger and electricity generation system；Hold over system is attempted by heat supply network supply line, for storing thermal energy in heat supply low ebb, discharging thermal energy at heat supply peak；Second level heating system is attempted by heat supply network circulation line, and second level heating system is equipped with secondary user end, and second level heating system utilizes the thermal energy in heat supply network circulation line to secondary user's end heat supply.The utility model solves the problems, such as that heating system peak load shifting under the situation that area of heat-supply service increases sharply, heat demand is vigorous, far and near end are uneven in temperature.
Description
Technical field
The utility model relates to heats, and in particular to a kind of integrated heating system of peak load shifting.
Background technique
In recent years, constantly raising the price with environmental protection policy, original medium small boiler for undertaking the extensive heat supply of northern China
It is constantly removed and is transformed, the environmental requirement that people energize coal heat supply is higher and higher, outstanding day by day for thermal pressure.
But due to the spies such as China's richness coal, oil-poor, gas less energy resource structure, the region span of the length and breadth of land and large-scale population
Point is still the main method approach of heat supply in the following significant period of time using coal heating.Wherein, coal heating is main
Including cogeneration of heat and power and high-efficient fire coal water heater boiler two ways, cogeneration of heat and power is divided into again takes out the steam extraction of condensation power generation system for warm back
Press steam discharge heating two ways, for the former, the pure power plant that China is implementing at present changes steam power plant and thermoelectricity decoupling
Equal technological transformations mode is for further widening the heat supply energy supply and scale for taking out condensation power generation, but is limited to current power process wind
Danger, this method are difficult to meet the needs for promoting bring Areas benefiting from central heating to ascend to heaven rapidly due to urbanization.Studies have shown that one
The back pressure machine heat capacity of the installation scale of platform 80,000 is equivalent to one 300,000 kilowatts of condensing turbine heat capacity, using heat
Electricity more meets current growth requirement than bigger back pressure machine heating system.
Heating system existing two more distinct issues in terms of Unit Selection and heat-supply network layout：First is that due to supplying
Hot systems have biggish thermal inertia, and adjustment speed is fastly and flexible not as good as heat supply network, but equally exists peak valley problem, directly affect
The type selecting scale and the method for operation of back pressure unit.When back pressure machine type selecting is excessive, in the first latter stage of heating, the operational efficiency of back pressure machine
It is extremely low, its generating efficiency is largely effected on, or even the difficult situation that back pressure cannot be switched on occur；When back pressure machine type selecting is too small, supplying
Warm peak period, it has to spike boiler be set to guarantee the needs of heat supply, equally reduce the energy utilizes level.Second is that by
In heating network is arranged over long distances the problem of, almost unavoidable high, the remote subscriber that heat supply network near-end user heat supply temperature occurs
The low problem of heat supply temperature, causes heating network user side uneven in temperature, influence resident with thermal sensation by.
Utility model content
The purpose of this utility model is to provide a kind of peak load shiftings to integrate heating system, is increased rapidly with solving area of heat-supply service
Add, heating system peak load shifting, far and near end problem uneven in temperature under the situation that heat demand is vigorous.
To achieve the goals above, the utility model provides the following technical solutions：
The utility model provides a kind of integrated heating system of peak load shifting, and the peak load shifting integrates heating system and includes：
Electricity generation system, the electricity generation system pass through pipeline output par, c remnants thermal energy for converting heat into electric energy
To heat supply network；
Heat supply network, the heat supply network include circulation line, the circulation line of the heat supply network be equipped with heat exchanger, hold over system,
Primary user end and second level heating system, wherein
The heat supply network can be carried out heat exchange by the residual heat of heat exchanger and electricity generation system；
The hold over system is attempted by heat supply network supply line, for storing thermal energy in heat supply low ebb, on heat supply peak
When discharge thermal energy；
The second level heating system is attempted by heat supply network circulation line, and second level heating system is equipped with secondary user end, institute
Second level heating system is stated using the thermal energy in heat supply network circulation line to secondary user's end heat supply.
It is integrated in heating system in above-mentioned peak load shifting, preferably, the electricity generation system includes：
Heat source, the heat source output terminal connects steam turbine, and conveys thermal energy to steam turbine by heat source output terminal；
Steam turbine, the thermal energy that the steam turbine is used to transmit heat source is converted into mechanical energy, and mechanical energy is supplied to hair
Motor, steam turbine output steam, is conveyed to oxygen-eliminating device and heat supply network heat exchanger respectively；
Generator, the mechanical energy that the generator is used to transmit steam turbine are converted into electric energy；
Oxygen-eliminating device, the oxygen-eliminating device are used to remove the oxygen in the liquid water of steam turbine output；
First feed pump, the feedwater outlet end of oxygen-eliminating device is arranged in first feed pump, for convey oxygen-eliminating device
Water supply pressurized delivered is to heat source；
Preferably, the steam turbine is back pressure turbine；
Preferably, the heat source is coal-fired steam boiler；
Preferably, the electricity generation system is additionally provided with condensate pump, and the heat exchanger input terminal is connected to steam turbine, heat exchanger
Output end is connected to oxygen-eliminating device by pipeline, and the condensate pump is arranged on the pipeline between heat exchanger and oxygen-eliminating device；
Preferably, the electric energy output end of the generator is connected directly or indirectly to second level heating system and hold over system.
It is integrated in heating system in above-mentioned peak load shifting, preferably, being additionally provided with circulation on the heat supply network circulation line
The heat supply network side of pump, the heat exchanger is equipped with input terminal and output end, and the heat supply network side input terminal and output end of heat exchanger are separately connected
The heat supply network circulation line at the both ends of heat supply network circulation line, the heat supply network side output end of heat exchanger is equipped with circulating pump.
It is integrated in heating system in above-mentioned peak load shifting, preferably, the hold over system includes accumulation of heat water pot, first
Valve, the second valve and the second feed pump, the input terminal and output end of the accumulation of heat water pot pass through pipeline respectively and are connected to heat supply network
On circulation line, the pipeline between accumulation of heat water pot input terminal and heat supply network circulation line is equipped with the first valve, the output of accumulation of heat water pot
Pipeline between end and heat supply network circulation line is equipped with the second feed pump and the second valve；
Preferably, the accumulation of heat water pot is positioned close to the position of the heat exchanger.
It is integrated in heating system in above-mentioned peak load shifting, preferably, the second level heating system includes water source heat
Pump, the water resource heat pump is attempted by heat supply network circulation line, and water resource heat pump is connect by secondary cycle pipeline with secondary user end；
Preferably, the water resource heat pump is positioned close to the position of the heat exchanger.
It is integrated in heating system in above-mentioned peak load shifting, preferably, being additionally provided with third in the second level heating system
Valve and the 4th valve, the water source input terminal and water source output end of the water resource heat pump pass through pipeline respectively and are connected to heat supply network circulation
On pipeline, the pipeline between water source input terminal and heat supply network circulation line is equipped with third valve, and water source output end and heat supply network recycle
Pipeline between pipeline is equipped with the 4th valve.
It integrates in heating system in above-mentioned peak load shifting, is returned preferably, the second level heating system is attempted by heat supply network
In water lines, the secondary user end is near-end user, and the primary user end is remote subscriber.
The utility model also provides a kind of integrated heat supply method of peak load shifting, including：
The thermal energy of heat source is converted electric energy by electricity generation system, and exports remaining thermal energy to heat supply network, exports electric energy and supplies to second level
Hot systems；
Heat supply network carries out heat supply to primary user end by heat supply network circulation line；
Heat supply network stores by hold over system or discharges partial heat energy；
Second level heating system carries out heat supply to secondary user end using the thermal energy in heat supply network circulation line.
It is integrated in heat supply method in above-mentioned peak load shifting, preferably, the heat supply network is stored or released by hold over system
Partial heat energy is put, including：
When heat supply low ebb, hold over system input terminal valve is opened, and hold over system output end valve is closed, and passes through hold over system
Store the partial heat energy in heat supply network circulation line；
When heat supply peak, hold over system input terminal valve is closed, and hold over system output end valve is opened, and passes through hold over system
Thermal energy is discharged into heat supply network circulation line.
It is integrated in heat supply method in above-mentioned peak load shifting, preferably, the second level heating system is recycled using heat supply network
Thermal energy in pipeline carries out heat supply to secondary user end, including：
Second level heating system absorbs the thermal energy in heat supply network circulation line by water resource heat pump；
Water resource heat pump carries out heat supply to secondary user end by secondary cycle pipeline；
Preferably, further include：
Electricity generation system is directly or indirectly powered to hold over system and/or water resource heat pump.
Compared with the immediate prior art, technical solution provided by the utility model has following excellent effect：
The utility model integrates back pressure machine heating system and accumulation of heat water pot, water source heat pump system, effective by accumulation of heat water pot
Heat supply peak valley needs of problems is solved, the installation scale of back pressure machine is reduced, by the way that water resource heat pump is arranged in nearly back pressure pusher side, is solved remote
The problem uneven in temperature of user caused by the heat supply of proximal end；It is integrated in heating system in the peak load shifting of the utility model, accumulation of heat water pot
It is arranged at coal-fired steam back pressure machine system side with water resource heat pump, is conducive to optimize Ground arrangement, it is horizontal to improve integrated management；And
And solve the problems, such as that heat supply network distance end subscriber heat supply temperature is uneven by water resource heat pump, heat supply network return water temperature is further decreased,
The installation scale of back pressure machine system is advantageously reduced simultaneously, improves system flexibility.Peak load shifting collection provided by the utility model
At heating system especially suitable for northern heating field, it is particularly suitable for middle and small scale cities and towns comprehensive heating.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
Wherein：
Fig. 1 is that the peak load shifting of the utility model embodiment integrates heating system schematic diagram；
Fig. 2 is that the peak load shifting of the utility model embodiment integrates a kind of flow diagram of embodiment of heat supply method；
Fig. 3 is that the peak load shifting of the utility model embodiment integrates the process signal of heat supply method another embodiment
Figure.
Description of symbols：
101- heat source；102- steam turbine；103- generator；104- internal electric network；105- external electrical network；106- condensed water
Pump；107- oxygen-eliminating device；The first feed pump of 108-；
201- heat exchanger；202- circulating pump；203- heat supply network supply line；204- heat supply network water return pipeline；205- primary user
End；
The first valve of 301-；The second valve of 302-；303- accumulation of heat water pot；The second feed pump of 304-；
401- water resource heat pump；402- secondary user end；403- third valve；The 4th valve of 404-；405- secondary cycle pipe
Road.
Specific embodiment
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that not conflicting
In the case where, the features in the embodiments and the embodiments of the present application can be combined with each other.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of description the utility model rather than requires the utility model that must be constructed and operated in a specific orientation, therefore
It should not be understood as limiting the present invention.Term used in the utility model " connected ", " connection " shall be understood in a broad sense,
For example, it may be being fixedly connected, may be a detachable connection；It can be directly connected, it can also be indirect by intermediate member
It is connected, for the ordinary skill in the art, can understands the concrete meaning of above-mentioned term as the case may be.
As shown in Figure 1, embodiment according to the present utility model, provides a kind of integrated heating system of peak load shifting, including：
Electricity generation system, electricity generation system give heat for converting heat into electric energy, and by pipeline output par, c remnants thermal energy
Net；Heat supply network, heat supply network include circulation line, and the heat supply network circulation line is equipped with primary user end 205, heat exchanger 201, accumulation of heat
System and second level heating system, heat supply network can be carried out heat exchange by the residual heat of heat exchanger 201 and electricity generation system；Hold over system stores
Hot systems are attempted by heat supply network circulation line, for storing to the partial heat energy in heat supply network circulation line；Second level heat supply system
System, second level heating system are attempted by heat supply network circulation line, and second level heating system is equipped with secondary user end 402, the second level
Heating system utilizes the thermal energy in heat supply network circulation line to 402 heat supply of secondary user end.
In the exemplary embodiment that the utility model peak load shifting integrates heating system, electricity generation system uses boiler combustion
Thermal energy is provided, the form of expression of provided thermal energy is steam, it is generated electricity using thermal energy, while electric power is exported, also remnants
Partial heat energy does not utilize, and remaining thermal energy shows as liquid water and vapour mixture, can be carried out utilization to residual heat, on the one hand will
The circulation line that the liquid water of low calorie sends electricity generation system back to utilizes again, on the other hand passes through heat exchanger 201 for high thermal energy
The thermal energy that steam is had is conveyed to heat exchanger 201, and 201 other side of heat exchanger is heat supply network, and heat supply network will by heat supply network circulation line
Thermal energy is conveyed to the primary user end 205 for needing heat supply at a distance, and primary user end 205 is directly concatenated with heat supply network circulation line, heat
Net circulation line includes heat supply network supply line 203 and heat supply network water return pipeline 204.When heat supply low ebb, in heat supply network circulation line
Thermal energy can not all be utilized, cause thermal energy to waste, therefore hold over system is set on heat supply network supply line 203, with
The thermal energy in heat supply network is stored when electric low ebb, sufficiently collects thermal energy in heat supply network；When peak of power consumption, thermal energy is insufficient in heat supply network
To support all 205 thermal demands of primary user end for needing heat supply, the thermal energy stored in hold over system is discharged into heat supply network at this time
In, sufficient thermal energy is provided for heat supply network and primary user end 205.The thermal energy of heat supply network is transmitted by heat supply network circulation line,
Since Pipeline is tediously long, due to heat consumption and heat-energy losses, heat supply network circulation line more distal end needs heat supply user can not
Sufficient thermal energy is obtained to meet heat supply, therefore second level heating system is set on heat supply network circulation line, to heat supply network circulation line
More distal end needs heat supply user to realize second level heat supply, to meet the heat demand at secondary user end 402.
In the exemplary embodiment that the utility model peak load shifting integrates heating system, electricity generation system includes：
Heat source 101,101 output end of heat source connects steam turbine 102, and is conveyed by 101 output end of heat source to steam turbine 102
Thermal energy；Steam turbine 102, steam turbine 102 is used to convert mechanical energy for the thermal energy that heat source 101 transmits, and mechanical energy is supplied to
Generator 103,102 output liquid water of steam turbine and steam, are conveyed to oxygen-eliminating device 107 and heat supply network heat exchanger 201 respectively；Generator
103, generator 103 is used to convert electric energy for the mechanical energy that steam turbine 102 transmits；Oxygen-eliminating device 107, oxygen-eliminating device 107 is for going
Except the oxygen in the liquid water of 102 output of steam turbine；First feed pump 108, the first feed pump 108 be arranged in oxygen-eliminating device 107 to
Water outlet end, the water supply pressurized delivered for conveying oxygen-eliminating device 107 is to heat source 101.
In the exemplary embodiment that the utility model peak load shifting integrates heating system, second level heating system is attempted by heat
On net water return pipeline 204, at this point, secondary user end 402 is near-end user, primary user end 205 is remote subscriber；So solve
User's problem uneven in temperature caused by far and near end heat supply in traditional heat supply network, that is, it is opposite that the supply of heat supply network supply line 203 is located at heat supply network
The user of distal end makes up the deficiency of remote subscriber heat supply, and the supply of heat supply network water return pipeline 204 is located at the user of heat supply network proximal end, into
One step reduces heat supply network return water temperature, while solving the problems, such as that traditional heat supply network near-end user heat supply is excessive.
In the exemplary embodiment that the utility model peak load shifting integrates heating system, preferably, steam turbine
102 be back pressure machine.
In the exemplary embodiment that the utility model peak load shifting integrates heating system, preferably, heat source 101
For coal-fired steam boiler.In the exemplary embodiment that the utility model peak load shifting integrates heating system, coal-fired steam boiler
For using the circulating fluidized bed boiler of minimum discharge, high temperature and pressure parameter or more, back pressure machine is integrated ready-package back pressure machine
(30MW), oxygen-eliminating device 107 use the better built-in deaerator of deaerating effect, and the heat medium of oxygen-eliminating device 107 is from back pressure
Machine steam discharge.Circulating fluidized bed boiler provides the steam of high thermal energy to back pressure machine by burning, and back pressure machine will using this some vapor
Thermal energy is converted into mechanical energy, output steam, and the mechanical energy that back pressure machine generates is conveyed to generator 103 and generates electricity, output electric energy
It is conveyed to power grid, steam a part of output is conveyed to oxygen-eliminating device 107, and steam another part of output is conveyed to heat exchanger 201,
After heat exchanger 201 completes heat exchange, steam liquefied is condensed water, is conveyed to oxygen-eliminating device 107；After oxygen-eliminating device 107 is to condensed water deoxygenation
Water supply is conveyed to circulating fluidized bed boiler by the first feed pump 108.
In the exemplary embodiment that the utility model peak load shifting integrates heating system, preferably, generator
103 electric energy output end is connected directly or indirectly to hold over system and/or second level heating system, to reduce resident with hot cost.
In the exemplary embodiment that the utility model peak load shifting integrates heating system, preferably, power grid packet
Internal electric network 104 and external electrical network 105 are included, internal electric network 104 is supplied to steam power plant's in-line power, including to hold over system and second level
Hot systems are powered, 105 pairs of society's power supplies of external electrical network.
In the exemplary embodiment that the utility model peak load shifting integrates heating system, preferably, power generation system
System is additionally provided with condensate pump 106, and 201 input terminal of heat exchanger is connected to steam turbine 102, and 201 output end of heat exchanger is connected by pipeline
It is connected to oxygen-eliminating device 107, condensate pump 106 is arranged on the pipeline between heat exchanger 201 and oxygen-eliminating device 107, and heat exchanger 201 changes
The condensed water of output is conveyed to oxygen-eliminating device 107 by condensate pump 106 after the completion of heat.
In the exemplary embodiment that the utility model peak load shifting integrates heating system, it is additionally provided on heat supply network circulation line
Circulating pump 202, the heat supply network side of the heat exchanger 201 are equipped with input terminal and output end, the heat supply network side input terminal of heat exchanger 201 and defeated
Outlet is separately connected the both ends of heat supply network circulation line, and the heat supply network circulation line of the heat supply network side output end of heat exchanger 201, which is equipped with, to follow
Ring pump 202.I.e. the heat supply network side output end of heat exchanger 201 connects heat supply network supply line 203, the heat supply network side input terminal of heat exchanger 201
Heat supply network water return pipeline 204 is connected, circulating pump 202 is set on heat supply network supply line 203, is transmission of the high-temperature-hot-water in heat supply network
Power is provided.
In the exemplary embodiment that the utility model peak load shifting integrates heating system, heat supply network circulation line includes more
A primary user end 205.Under normal conditions, the heat supply user situation of heat supply network is complicated, and multiple users are attempted by heat supply network simultaneously.
In the exemplary embodiment that the utility model peak load shifting integrates heating system, hold over system includes accumulation of heat water pot
303, the first valve 301, the second valve 302 and the second feed pump 304, the input terminal and output end point of the accumulation of heat water pot 303
It is not connected on heat supply network circulation line by pipeline, is set on the pipeline between 303 input terminal of accumulation of heat water pot and heat supply network circulation line
Have the first valve 301, the pipeline between 303 output end of accumulation of heat water pot and heat supply network circulation line be equipped with the second feed pump 304 and
Second valve 302.303 input terminal of accumulation of heat water pot and output end are both connected on heat supply network supply line 203, when heat supply low ebb,
One valve 301 is opened, and the second valve 302 is closed, and stores the hot water after heat supply network heat absorption heating by accumulation of heat water pot 303；Heat supply is high
When peak, the first valve 301 is closed, and the second valve 302 is opened, and the hot water stored in accumulation of heat water pot 303 passes through the second feed pump
304 export to heat supply network, and the first valve 301 and the second valve 302 are all made of throttle valve.In system, accumulation of heat water pot 303 is preferably set
It sets in coal-fired steam back pressure machine system side, the i.e. position close to heat exchanger 201, is conducive to optimize Ground arrangement, improves integrated pipe
Reason is horizontal.Accumulation of heat water pot 303 is close to 201 side of heat exchanger, and in other words, heat supply heat supply network has proximal end, there is distal end, and accumulation of heat water pot 303 is
It is placed in proximal end, is actually arranged inside steam power plant.
In the exemplary embodiment that the utility model peak load shifting integrates heating system, second level heating system includes water
Source heat pump 401, the water resource heat pump 401 are attempted by heat supply network circulation line, and water resource heat pump 401 passes through secondary cycle pipeline 405
It is connect with secondary user end 402.
In the exemplary embodiment that the utility model peak load shifting integrates heating system, it is additionally provided in second level heating system
Third valve 403 and the 4th valve 404, the water source input terminal and water source output end of the water resource heat pump 401 pass through pipeline respectively
It is connected on heat supply network circulation line, the pipeline between water source input terminal and heat supply network circulation line is equipped with third valve 403, water source
Pipeline between output end and heat supply network circulation line is equipped with the 4th valve 404.When not needing to supply secondary user end 402
Heat or secondary user end 402 are without heat demand, again or when the pipeline of second level heating system breaks down, closing third
Valve 403 and the 4th valve 404, while the power supply for heat pump 401 of cutting off the water supply, facilitate realization Multistage Control.In the utility model
Peak load shifting integrates in the exemplary embodiment of heating system, and water resource heat pump 401 is connected by pipeline with heat supply network water return pipeline 204
It connects, water resource heat pump 401 uses compression heat pump, and water resource heat pump 401 is mounted on heat supply network circulation line, close to the one of back pressure machine
Side, the i.e. position close to heat exchanger 201 are conducive to optimize Ground arrangement, improve integrated management level, and water resource heat pump 401 absorbs
The thermal energy of low-temperature heat source and the thermal energy being transformed by inputing power supply in heat supply network apart from heat exchanger 201 (i.e. steam power plant or confession
Heat stations) closer heat user；First the low-temperature heat source of water resource heat pump 401 guarantees there be the low of better quality from heat supply network return water
Second temperature-heat-source further decreases heat supply network return water temperature by heat pump effect.The second feed pump 304 and water of accumulation of heat water pot 303
Heat pump 401 driven compressor power supply in source is both from electricity generation system (i.e. back pressure machine system) institute generated energy, to reduce resident's heat
Cost.
The second level heating system is attempted by heat supply network water return pipeline, the secondary user end be near-end user, described one
Grade user terminal is remote subscriber.Have proximally and distally in heat supply heat supply network physical space, accumulation of heat water pot 303 and water resource heat pump 401 are all
It is to be placed in proximal end, is actually arranged inside steam power plant, near-end user refers to the use in physical space close to steam power plant
Family, can also refer to needs heat supply department or equipment inside steam power plant, and remote subscriber refers to the user in physical space far from steam power plant,
I.e. apart from steam power plant apart from user farther out group.
As shown in Fig. 2, the utility model also provides a kind of integrated heat supply method of peak load shifting, include the following steps：
Step S201, the thermal energy of heat source is converted electric energy by electricity generation system, and exports remaining thermal energy to heat supply network, exports electric energy
Give second level heating system.
Step S202, heat supply network carries out heat supply to primary user end by heat supply network circulation line.
Step S203, heat supply network stores by hold over system or discharges partial heat energy.
Step S204, second level heating system carries out heat supply to secondary user end using the thermal energy in heat supply network circulation line.
As shown in figure 3, another embodiment according to the present utility model, the utility model provides a kind of integrated confession of peak load shifting
Hot method, includes the following steps：
Step S301, the thermal energy of heat source is converted electric energy by electricity generation system, and exports remaining thermal energy to heat supply network, exports electric energy
Give second level heating system.
Step S302, electricity generation system is directly or indirectly powered to water resource heat pump.
Step S303, heat supply network carries out heat supply to primary user end by heat supply network circulation line.
Step S304, when heat supply low ebb, the first valve is opened, and the second valve is closed, and is stored heat supply network by hold over system and is followed
Partial heat energy in endless tube road.
Step S305, when heat supply peak, the first valve is closed, and the second valve is opened, and discharges thermal energy extremely by hold over system
In heat supply network circulation line.
Step S306, second level heating system absorbs the thermal energy in heat supply network circulation line by water resource heat pump.
Step S307, water resource heat pump carries out heat supply to secondary user end by secondary cycle pipeline.
In the exemplary embodiment that the utility model peak load shifting integrates heat supply method, electricity generation system uses boiler combustion
Thermal energy is provided, the form of expression of provided thermal energy is steam, is generated electricity using steam thermal energy, while electric power is exported, also
Nubbin thermal energy does not utilize, and remaining thermal energy shows as liquid water and vapour mixture, can be carried out utilization, a side to residual heat
Face utilizes the circulation line that the liquid water of low calorie sends electricity generation system back to again, on the other hand passes through heat exchanger 201 for high fever
The thermal energy that the steam of energy is had is conveyed to heat exchanger 201, and 201 other side of heat exchanger is heat supply network, and heat supply network passes through heat supply network circulation pipe
Thermal energy is conveyed to the primary user end 205 for needing heat supply at a distance by road, and primary user end 205 is directly gone here and there with heat supply network circulation line
It connects, heat supply network circulation line includes heat supply network supply line 203 and heat supply network water return pipeline 204.When heat supply low ebb, heat supply network circulation pipe
Thermal energy in road can not be all utilized, and thermal energy is caused to waste, therefore hold over system is arranged on heat supply network supply line 203,
The thermal energy in heat supply network is stored in low power consumption, sufficiently collects thermal energy in heat supply network；When peak of power consumption, thermal energy in heat supply network
It is not enough to support all 205 thermal demands of primary user end for needing heat supply, is at this time discharged into the thermal energy stored in hold over system
In heat supply network, sufficient thermal energy is provided for heat supply network and primary user end 205.The thermal energy of heat supply network is passed by heat supply network circulation line
Defeated, since Pipeline is tediously long, due to heat consumption and heat-energy losses, heat supply network circulation line end needs heat supply user can not
Sufficient thermal energy is obtained to meet heat supply, therefore second level heating system is set on heat supply network circulation line, to heat supply network circulation line
End needs heat supply user to realize second level heat supply, to meet the heat demand at secondary user end 402；Alternatively, second level heating system
It is attempted by heat supply network water return pipeline 204, at this point, secondary user end 402 is near-end user, primary user end 205 is remote subscriber；
In this way, the thermal energy of heat supply network supply line 203 directly feeds the user positioned at heat supply network opposite proximal end, remote subscriber heat supply is made up not
Foot, and the supply of the thermal energy of heat supply network water return pipeline 204 is located at the user of heat supply network proximal end, further decreases heat supply network return water temperature, simultaneously
Solve the problems, such as that traditional heat supply network near-end user heat supply is excessive.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of peak load shifting integrates heating system, which is characterized in that the peak load shifting integrates heating system and includes：
Electricity generation system, the electricity generation system give heat for converting heat into electric energy, and by pipeline output par, c remnants thermal energy
Net；
Heat supply network, the heat supply network include circulation line, and the circulation line of the heat supply network is equipped with heat exchanger, hold over system, level-one
User terminal and second level heating system, wherein
The heat supply network can be carried out heat exchange by the residual heat of heat exchanger and electricity generation system；
The hold over system is attempted by heat supply network supply line, for storing thermal energy in heat supply low ebb, releasing at heat supply peak
Heat release energy；
The second level heating system is attempted by heat supply network circulation line, second level heating system be equipped with secondary user end, described two
Grade heating system utilizes the thermal energy in heat supply network circulation line to secondary user's end heat supply.
2. peak load shifting as described in claim 1 integrates heating system, which is characterized in that the electricity generation system includes：
Heat source, the heat source output terminal connects steam turbine, and conveys thermal energy to steam turbine by heat source output terminal；
Steam turbine, the thermal energy that the steam turbine is used to transmit heat source is converted into mechanical energy, and mechanical energy is supplied to generator,
Steam turbine output steam, is conveyed to oxygen-eliminating device and heat supply network heat exchanger respectively；
Generator, the mechanical energy that the generator is used to transmit steam turbine are converted into electric energy；
Oxygen-eliminating device, the oxygen-eliminating device are used to remove the oxygen in the liquid water of steam turbine output；
The feedwater outlet end of oxygen-eliminating device, the water supply for conveying oxygen-eliminating device is arranged in first feed pump, first feed pump
Pressurized delivered is to heat source.
3. peak load shifting as claimed in claim 2 integrates heating system, which is characterized in that the steam turbine is back pressure type steam turbine
Machine, the heat source are coal-fired steam boiler.
4. peak load shifting as claimed in claim 2 integrates heating system, which is characterized in that the electricity generation system is additionally provided with condensation
Water pump, the heat exchanger input terminal are connected to steam turbine, and heat exchanger output end is connected to oxygen-eliminating device, the condensed water by pipeline
Pump is arranged on the pipeline between heat exchanger and oxygen-eliminating device.
5. peak load shifting as claimed in claim 2 integrates heating system, which is characterized in that the electric energy output end of the generator
It is connected directly or indirectly to second level heating system and hold over system.
6. peak load shifting as described in claim 1 integrates heating system, which is characterized in that also set on the heat supply network circulation line
There is circulating pump, the heat supply network side of the heat exchanger is equipped with input terminal and output end, the heat supply network side input terminal and output end point of heat exchanger
Not Lian Jie heat supply network circulation line both ends, the heat supply network circulation line of the heat supply network side output end of heat exchanger is equipped with circulating pump.
7. peak load shifting as described in claim 1 integrates heating system, which is characterized in that the hold over system includes accumulation of heat water
Tank, the first valve, the second valve and the second feed pump, the input terminal of the accumulation of heat water pot pass through pipeline with output end respectively and connect
On heat supply network circulation line, the pipeline between accumulation of heat water pot input terminal and heat supply network circulation line is equipped with the first valve, accumulation of heat water
Pipeline between tank output end and heat supply network circulation line is equipped with the second feed pump and the second valve, and the accumulation of heat water pot setting exists
Close to the position of the heat exchanger.
8. peak load shifting as described in claim 1 integrates heating system, which is characterized in that the second level heating system includes
Water resource heat pump, the water resource heat pump are attempted by heat supply network circulation line, and water resource heat pump passes through secondary cycle pipeline and secondary user
End connection, the water resource heat pump are positioned close to the position of the heat exchanger.
9. peak load shifting as claimed in claim 8 integrates heating system, which is characterized in that also set in the second level heating system
There are third valve and the 4th valve, the water source input terminal and water source output end of the water resource heat pump pass through pipeline respectively and be connected to heat
On net circulation line, the pipeline between water source input terminal and heat supply network circulation line is equipped with third valve, water source output end and heat
Pipeline between net circulation line is equipped with the 4th valve.
10. peak load shifting as claimed in claim 9 integrates heating system, which is characterized in that the second level heating system simultaneously connects
On heat supply network water return pipeline, the secondary user end is near-end user, and the primary user end is remote subscriber.
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| CN201821211018.6U CN208154573U (en) | 2018-07-27 | 2018-07-27 | Peak load shifting integrates heating system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826420A (en) * | 2018-07-27 | 2018-11-16 | 国电龙源电力技术工程有限责任公司 | Peak load shifting integrates heating system and method |
| WO2021056424A1 (en) * | 2019-09-25 | 2021-04-01 | 国电龙源电力技术工程有限责任公司 | Biomass cogeneration integrated heat pump heating system |
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2018
- 2018-07-27 CN CN201821211018.6U patent/CN208154573U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826420A (en) * | 2018-07-27 | 2018-11-16 | 国电龙源电力技术工程有限责任公司 | Peak load shifting integrates heating system and method |
| WO2021056424A1 (en) * | 2019-09-25 | 2021-04-01 | 国电龙源电力技术工程有限责任公司 | Biomass cogeneration integrated heat pump heating system |
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