CN208106512U - The exhaust steam residual heat circulatory system - Google Patents
The exhaust steam residual heat circulatory system Download PDFInfo
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- CN208106512U CN208106512U CN201820433162.8U CN201820433162U CN208106512U CN 208106512 U CN208106512 U CN 208106512U CN 201820433162 U CN201820433162 U CN 201820433162U CN 208106512 U CN208106512 U CN 208106512U
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Abstract
The utility model discloses a kind of exhaust steam residual heat circulatory systems, the exhaust steam residual heat circulatory system includes condensing-type cogeneration units, back pressure type cogeneration units, energy separation device, heat supply network unit and control device, the steam inlet of back pressure type cogeneration units is connected with condensing-type cogeneration units steam (vapor) outlet, energy separation device has air intake, cold side outlet, hot end outlet, air intake is connected with steam (vapor) outlet, First Heat Exchanger is connected with cold side outlet, second heat exchanger is exported with hot end and back pressure type cogeneration units steam (vapor) outlet is connected, and First Heat Exchanger and the second heat exchanger are connected with condensing-type cogeneration units, control device is configured to controllable back pressure type cogeneration units switchover operation between direct circulation mode and adjustable heat supply mode.The structure of the exhaust steam residual heat circulatory system according to the present utility model is simple, can accurately adjust under different thermal load conditions, realizes the stable regulation of hot supply and the stable supplying of power supply volume.
Description
Technical field
The utility model relates to cogeneration of heat and power technical fields, more particularly, to a kind of steam exhaust prewarming circulating system.
Background technique
In Thermal Power Station, heat user is supplied using steam (steam exhaust) heat being discharged after function was done in steam turbine,
The production process for producing electric energy and thermal energy simultaneously in same power-equipment and the circulatory system is cogeneration of heat and power process.Cogeneration of heat and power
Energy conservation and environmental benefit highly significant, the condenser heat that steam exhaust is discharged into air cooling tower or clammy tower accounts for power plant gross energy 35%-
55%, UTILIZATION OF VESIDUAL HEAT IN is significant for energy conservation transformation of power plants.Cogeneration of heat and power is compared with pure condensed steam unit, in China's per Spring Festival holidays
About more than 30,000,000 tons of mark coals of the energy, the discharge such as CO2 is correspondingly reduced.Small-sized industrial boiler heating, average operating efficiency
For 50%-60%, and the boiler efficiency of cogeneration of heat and power is 75-90%.The thermal efficiency of large thermal power plant is 38%-43%, and hot
The whole audience thermal efficiency of power plant is usually both greater than 45%.The thermal efficiency of cogeneration of heat and power is far longer than miniature boiler and large thermal power plant
The thermal efficiency.
China《Economizing energy law》With《Air Pollution Prevention Law》Using cogeneration of heat and power as energy conservation and environmentally friendly effective measures,
It formulates《Cogeneration of heat and power development plans in 2010 and the year two thousand twenty distant view developing goal》, plan and point out the year two thousand twenty, national thermoelectricity
Coproduction total installation of generating capacity will be more than 200,000,000 kilowatts, the wherein cogeneration of heat and power installed capacity of concentrated supply of heating in the city and industrial production heat
It may each be about 100,000,000 kilowatts；Cogeneration of heat and power will account for the 22% of whole nation power generation total installation of generating capacity, and the ratio in fired power generating unit reaches 37%
Left and right.According to middle Electricity Federation statistical data, the 36.4% of thermoelectricity installed capacity is accounted for by the cogeneration of heat and power of the end of the year 2016.It puts into effect within 2016
's《Cogeneration of heat and power management method》, and《Electric power development " 13 " planning》, future will strive realize the north it is large and medium-sized more than
City cogeneration of heat and power central heating rate reaches 60% or more.In qualified large- and-medium size cities, construction back pressure type thermoelectricity is encouraged
Unit；It is preferential to build back pressure type thermoelectricity unit in the industrial park that small and medium cities and thermic load are concentrated.
However, the lacking of often having that electric load changes with the variation of load of back pressure type thermoelectricity unit in the related technology
Point, that is to say, that back pressure type thermoelectricity unit in the related technology is not for can be implemented simultaneously heating load under different thermal load conditions
The stable supplying of stable regulation and generated energy is not easy to accurately be adjusted under different thermal load conditions, especially supplies in spike
During heat, it can not guarantee heat capacity and power supply capacity simultaneously.
Utility model content
The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model mentions
A kind of exhaust steam residual heat circulatory system out, the structure of the exhaust steam residual heat circulatory system is simple, can be in different thermal load conditions
Lower accurate adjusting, realizes the stable regulation of hot supply and the stable supplying of power supply volume.
According to the exhaust steam residual heat circulatory system of the utility model embodiment, including：Condensing-type cogeneration units；Back pressure type
Cogeneration units, the steam inlet of the back pressure type cogeneration units and the steam of the condensing-type cogeneration units go out
Mouth is connected；Energy separation device, the energy separation device have air intake, cold side outlet, hot end outlet, the air intake with
The steam (vapor) outlet of the back pressure type cogeneration units is connected；Heat supply network unit, the heat supply network unit include first be sequentially connected
Heat exchanger and the second heat exchanger, the First Heat Exchanger are connected with the cold side outlet, second heat exchanger and the hot end
The steam (vapor) outlet of outlet and the back pressure type cogeneration units is connected, and the First Heat Exchanger and second heat exchanger
It is connected with the condensing-type cogeneration units；Control device, the control device are configured to can control the back pressure type
Cogeneration units switchover operation between direct circulation mode and adjustable heat supply mode.
According to the exhaust steam residual heat circulatory system of the utility model embodiment, filled by setting energy separation device and control
It sets, it can be in different thermic loads based on steam flowing and energy separation principle using control device and energy separation device
Under the conditions of accurately adjust, realize the exhaust steam residual heat circulatory system switch between direct circulation mode, adjustable heat supply mode, Jin Ershi
Now as thermic load changes and the hot supply of stable regulation and the stabilization for maintaining power supply volume, it is also possible to effectively guarantee to supply
Thermal mass improves the degree of automation, reduces operating cost.
Some embodiments according to the present utility model, the condensing-type cogeneration units include：Boiler；Condensing-type steamer
Machine, the condensing turbine are connected with the boiler and drive operating, the condensing-type vapour by the steam that the boiler is discharged
Turbine is for driving generating set；Condenser, the condenser are connected with will be from the condensing-type with the condensing turbine
The steam condensation Cheng Shui of steam turbine discharge.
Some examples according to the present utility model, the condensing-type cogeneration units further include：Heater, the heating
Device is connected between the condenser and the boiler, and the heater and the First Heat Exchanger and second heat exchanger
It is connected；Boiler water supply pump and the first condensate pump, the boiler water supply pump is located between the boiler and the heater, described
First condensate pump is located between the condenser and the heater.
Some embodiments according to the present utility model, the back pressure type cogeneration units include：For driving generator
The back pressure turbine of group, the control device include:Inlet valve, the inlet valve are set to the back pressure type cogeneration units
Steam (vapor) outlet and the air intake between；Bypass valve, the bypass valve are set to the steam of the back pressure type cogeneration units
Between outlet and second heat exchanger；Hot end valve and cold end valve, the hot end valve are set to hot end outlet and described second
Between heat exchanger, the cold end valve is set between the cold side outlet and the First Heat Exchanger.
Some embodiments according to the present utility model, the energy separation device include：It is vortexed cavity, the vortex cavity
It is connected with the steam (vapor) outlet of the back pressure type cogeneration units；High temperature pipe, the side of the high temperature pipe and the vortex cavity
Connection；Cryotronl, the cryotronl with it is described vortex cavity the other side be connected to and with the high temperature pipe it is coaxially arranged, it is described low
Temperature pipe and the high temperature pipe are respectively provided with the helical duct extended along its axial screw, the cryotronl and the vortex cavity
Connectivity part be equipped with orifice plate；Rectifying component, the rectifying component, which runs through, is set to the high temperature pipe, the vortex cavity and the low temperature
Extend in pipe and along the axial direction of the high temperature pipe.
One end far from the vortex cavity of some examples according to the present utility model, the high temperature pipe forms the heat
Mouth is brought out, one end far from the vortex cavity of the cryotronl forms the cold side outlet.
Some examples according to the present utility model, the adjusting control valve include：Annular stop portion, the annular stop portion
Set on the inner wall of the high temperature pipe；Tapered plug, the conical surface of the tapered plug is towards the annular stop portion, the conical surface and the annular
The steam flow channel limited between stopper section is formed as throat, and the tapered plug is removable along the axial direction of the high temperature pipe；Electricity
Machine, the motor are connected to drive the tapered plug to move along the axial direction of the high temperature pipe with the tapered plug.
Some examples according to the present utility model, the rectifying component are formed as tubular structure, the tubular structure periphery wall
Equipped with along its axially extending spiral lamination.
Some embodiments according to the present utility model, the heat supply network unit further include：Third heat exchanger, the third heat exchange
Device is connected with second heat exchanger, and the steam (vapor) outlet phase of the third heat exchanger and the condensing-type cogeneration units
Even.
Some examples according to the present utility model, the exhaust steam residual heat circulatory system further include：Condensate tank, the condensation
Water tank is set to the condensing-type cogeneration units and the First Heat Exchanger, second heat exchanger and the third exchange heat
Between device.
Some examples according to the present utility model, the exhaust steam residual heat circulatory system further include：Temperature-decreased pressure reducer and stream
Adjustable valve, the temperature-decreased pressure reducer and the flow control valve are set to the steam (vapor) outlet of the condensing-type cogeneration units
Between the third heat exchanger.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and is readily appreciated that, wherein：
Fig. 1 is the schematic diagram according to the exhaust steam residual heat circulatory system of the utility model embodiment；
Fig. 2 is the schematic diagram according to the energy separation device of the exhaust steam residual heat circulatory system of the utility model embodiment；
Fig. 3 is the another signal according to the energy separation device of the exhaust steam residual heat circulatory system of the utility model embodiment
Figure.
Appended drawing reference：
The exhaust steam residual heat circulatory system 100；
Condensing turbine 11；Boiler 12；Condenser 13；Heater 14；First condensate pump 15；
Boiler water supply pump 16；
Back pressure turbine 21；
Energy separation device 30；Air intake 31；Cryotronl 32；High temperature pipe 33；It is vortexed cavity 34；Rectifying component 35；
Orifice plate 36；Cold side outlet 321；Hot end outlet 331；Annular stop portion 371；Tapered plug 372；Motor 373；
Inlet valve 41；Bypass valve 42；Hot end valve 43；Cold end valve 44；
First Heat Exchanger 51；Second heat exchanger 52；Third heat exchanger 53；Temperature-decreased pressure reducer 61；Flow control valve 62；
Condensate tank 70；Second condensate pump 81；Water circulating pump 82；Dirt separator 90.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on the figure
Or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to the utility model
System.In addition, defining " first ", the feature of " second " can explicitly or implicitly include one or more of the features.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Below with reference to the accompanying drawings the exhaust steam residual heat circulatory system 100 according to the utility model embodiment is described.
It as shown in Figure 1-Figure 3, include condensing-type according to the exhaust steam residual heat circulatory system 100 of the utility model one embodiment
Cogeneration units, back pressure type cogeneration units, energy separation device 30, heat supply network unit and control device.
The steam inlet of back pressure type cogeneration units is connected with the steam (vapor) outlet of condensing-type cogeneration units, condensing-type
The some vapor of cogeneration units can steam (vapor) outlet by condensing-type cogeneration units, back pressure type cogeneration units
Steam inlet enter back pressure type cogeneration units so that back pressure type cogeneration units and condensing-type cogeneration of heat and power machine
Group paired running, and do work, generate electricity.
Energy separation device 30 has air intake 31, cold side outlet 321 and hot end outlet 331, back pressure type cogeneration of heat and power
The steam (vapor) outlet of unit is connected with the air intake 31 of energy separation device 30.
Further, heat supply network unit includes First Heat Exchanger 51 and the second heat exchanger 52, and First Heat Exchanger 51 and second are changed
Hot device 52 is sequentially connected, and the cold side outlet 321 of energy separation device 30 is connected with First Heat Exchanger 51, energy separation device 30
The steam (vapor) outlet that hot end exports 331, back pressure type cogeneration units is connected with the second heat exchanger 52 side by side, also, the first heat exchange
Device 51, the second heat exchanger 52 are connected with condensing-type cogeneration units, and control device is configured to can control back pressure type heat
Electricity Federation produces unit switchover operation between direct circulation mode and adjustable heat supply mode.
That is, when back pressure type cogeneration units are switched to direct circulation mode by control device, back pressure type heat
The steam exhaust that Electricity Federation produces unit is directly entered the second heat exchanger 52, thus cold to passing through in heat supply network unit by the second heat exchanger 52
Matchmaker heats, to realize in thermic load steady in a long-term, realizes that the pressure loss is small, heat capacity is stable and generated energy
Stable effect.
When back pressure type cogeneration units are switched to adjustable heat supply mode by control device, back pressure type cogeneration units
Steam exhaust energy separation device 30 is entered by air intake 31 after, steam exhaust is separated into flow of steam at high temperature by energy separation device 30
With Low Temperature Steam stream, so that flow of steam at high temperature enters the second heat exchangers 52 from hot end outlet 331, Low Temperature Steam stream is from cold side outlet
321 enter First Heat Exchanger 51, and then more to the refrigerant progress in heat supply network unit by First Heat Exchanger 51, the second heat exchanger 52
Grade heating, reduces thermal losses and end differential loss loses, so that (such as seasonal heating load supplies in unstable thermic load
Warm, ventilation thermic load etc.), realize that heating load stablizes adjustable, generated energy stabilization.
In addition, condensing-type cogeneration units continuous operation, it can also be with the generated energy of further satisfaction basic electricity demand
Stablize.
As a result, according to the exhaust steam residual heat circulatory system 100 of the utility model embodiment, by the way that energy separation device 30 is arranged
And control device, using control device and energy separation device 30, based on steam flowing and energy separation principle, Ke Yi
It is accurately adjusted under different thermal load conditions, realizes the exhaust steam residual heat circulatory system 100 in direct circulation mode, adjustable heat supply mode
Between switch, and then realize with thermic load variation and the hot supply of stable regulation and maintain power supply volume stabilization, meanwhile, can also
Effectively to guarantee heating quality, improve the degree of automation, reduction operating cost.
As shown in Figure 1, condensing-type cogeneration units include boiler 12, condensing in some embodiments of the utility model
Formula steam turbine 11 and condenser 13, the steam that the steam (vapor) outlet of boiler 12 can be formed as above-mentioned condensing-type cogeneration units go out
Mouthful, the steam inlet of condensing turbine 11 is connected with the steam (vapor) outlet of boiler 12, also, the steam being discharged in boiler 12 drives
Lower operating to drive 373 groups of power generations of generator, and then guarantees that the generated energy of user's basic electricity demand is stablized.
Condenser 13 is connected with condensing turbine 11, in this way, the steam exhaust being discharged from condensing turbine 11 can arrange
Enter condenser 13, form condensed water, consequently facilitating utilizing 11 generating efficiency of condensing turbine as a result, in circulation back boiler 12
Height, generate electricity the characteristics of affected by hot loading does not influence, and by continuous operation, the generated energy for being effectively guaranteed basic electricity demand is steady
It is fixed.
As shown in Figure 1, condensing-type cogeneration units further include heater in the further example of the utility model
14, boiler water supply pump 16 and the first condensate pump 15, heater 14 are located between condenser 13 and boiler 12, meanwhile, first changes
Hot device 51 and the second heat exchanger 52 are connected with heater 14, thus condensed water and First Heat Exchanger 51 to condenser 13
It is preheated with condensed water in the second heat exchanger 52, boiler water supply pump 16 is located between boiler 12 and heater 14, and first is solidifying
It bears water pump 15 to be located between heater 14 and condenser 13, to guarantee the cycle operation of condensing-type cogeneration units.
As shown in Figure 1, back pressure type cogeneration units include back pressure type steam turbine in some embodiments of the utility model
Machine 21, the steam inlet of back pressure turbine 21 can be formed as the steam inlet of back pressure type cogeneration units, back pressure type vapour
The steam (vapor) outlet of turbine 21 can be formed as the steam (vapor) outlet of back pressure type cogeneration units.
Control device includes inlet valve 41, bypass valve 42, hot end valve 43 and cold end valve 44, and inlet valve 41 is located at back pressure type vapour
Between the steam (vapor) outlet of turbine 21 and the air intake 31 of energy separation device 30, bypass valve 42 is located at the steaming of back pressure turbine 21
Between vapor outlet and the second heat exchanger 52, hot end valve 43 is located between hot end outlet 331 and the second heat exchanger 52, and cold end valve 44 is set
Between cold side outlet 321 and First Heat Exchanger 51, that is to say, that inlet valve 41, energy separation device 30, hot end valve 43 are connected
Connection, also, be connected in parallel after the series connection of inlet valve 41, energy separation device 30, hot end valve 43 with bypass valve 42.
In this way, when bypass valve 42 is closed, when inlet valve 41, hot end valve 43 and cold end valve 44 are opened, back pressure type cogeneration of heat and power
Unit is run into adjustable heat supply mode, so as to which by energy separation device 30, accurately control Low Temperature Steam stream and high temperature steam
The temperature and flow-rate ratio of steam flow, to accurately control heat capacity, and realize Multi-stage heating, so realize heat capacity with
Thermic load changes and stablizes adjustable while can also guarantee that generated energy is stablized, and adapts to the operating condition of unstable thermic load (such as seasonality
Thermic load etc.).
When bypass valve 42 is opened, and inlet valve 41, hot end valve 43 and cold end valve 44 are closed, back pressure type cogeneration units into
Enter direct circulation mode, the steam exhaust of back pressure turbine 21 is directly entered the second heat exchanger 52 and carries out to the refrigerant in heat supply network unit
Heating adapts to thermic load operating condition steady in a long-term (such as to realize that the pressure loss is small, heat capacity is stable and generated energy is stablized
Industrial manufacture process thermic load etc.).
As shown in Figures 2 and 3, in some embodiments of the utility model, energy separation device 30 includes vortex cavity
34, high temperature pipe 33, cryotronl 32 and rectifying component 35, vortex cavity 34 are connected with the steam (vapor) outlet of back pressure type cogeneration units,
The left end of high temperature pipe 33 be connected to the side (such as right end) of vortex cavity 34, the right end of cryotronl 32 be vortexed the another of cavity 34
Side (such as left end) connection, high temperature pipe 33 and cryotronl 32 are coaxially arranged, and rectifying component 35 extends along the axial direction of high temperature pipe 33, and
And rectifying component 35 runs through in high temperature pipe 33, vortex cavity 34 and cryotronl 32.
Further, the inner wall of cryotronl 32, high temperature pipe 33 inner wall be respectively formed with helical duct, screw channel can be with
Extend along the axial screw of high temperature pipe 33 and cryotronl 32, also, orifice plate 36 is located at cryotronl 32 and is vortexed the connection of cavity 34
Place, thus guarantee to flow in steam and the effect of energy separation principle under the Low Temperature Steam stream that separates can enter the by orifice plate 36
The heat exchange of one heat exchanger 51.
In this way, the steam of back pressure type cogeneration units can enter from air intake 31 along the tangential direction of vortex cavity 34
It is vortexed in cavity 34, to form vortex, since the entrance of cryotronl 32 is obstructed with orifice plate 36, steam stream is along high temperature pipe 33
Helical duct does high-speed screw movement, also, the vortex characteristic of its flowing gradually weakens along the extending direction of high temperature pipe 33 simultaneously,
To which under steam flowing and energy separation principle, the movement of outer layer steam stream causes 33 inner core of high temperature pipe to be formed by high temperature pipe
The barometric gradient of cryotronl 32 is directed toward in 33 hot end outlet 331, under the action of barometric gradient, forms the hot end by high temperature pipe 33
331 direction cryotronl 32 of outlet backflows.
As a result, under steam flowing and the effect of energy separation principle, during vapor stream flow, outer gas flow temperature liter
Height, from the hot end of high temperature pipe 33 outlet 331 outflow, internal layer backflow steam stream temperature reduction, by orifice plate 36 from cryotronl 32 flow
Out, it to form flow of steam at high temperature and Low Temperature Steam stream, and then realizes and the energy separation of steam is acted on, guarantee for heat supply network
The Multi-stage heating of unit acts on.
Such as Fig. 2 and Fig. 3, in the further example of the utility model, one end of the separate vortex cavity 34 of high temperature pipe 33
(right end in such as Fig. 3) forms the hot end outlet 331, one end (left side in such as Fig. 3 of the separate vortex cavity 34 of cryotronl 32
End) form the cold side outlet 321.
Such as Fig. 3, in the further example of the utility model, energy separation device 30 further includes adjusting control valve, is adjusted
Control valve is located in high temperature pipe 33, and proximity thermal brings out the arrangement of mouth 331.In this way, may be implemented using adjusting control valve to heat
The runner aperture regulation of mouth 331 is brought out, to realize to the flow of steam at high temperature and Low Temperature Steam stream in energy separation device 30
The control of temperature and flow-rate ratio, and then realize the accurate control heat capacity under different thermal load conditions, guarantee heat capacity
Stablize adjustable, generated energy as thermic load changes and stablize.
Such as Fig. 3, in the further example of the utility model, adjusting control valve includes annular stop portion 371, tapered plug
372 and motor 373, annular stop portion 371 be located at the inner wall of high temperature pipe 33, through channel is formed in the middle part of annular stop portion 371, bore
Plug 372 obtains side (left side in such as Fig. 3) towards annular stop portion 371 and forms the conical surface, limits between the conical surface and annular stop portion 371
The steam flow channel made forms throat, and motor 373 is connected with tapered plug 372, and tapered plug 372 can be along height under the driving of motor 373
The axial direction of warm pipe 33 is mobile, so that the conical surface and annular stop portion 371 form larynx when tapered plug 372 moves to the left
Portion's steam flow channel aperture reduces, and when tapered plug 372 moves to the right, throat's steam flow of the conical surface and the formation of annular stop portion 371 is logical
Road aperture, which is gradually increased to throat, to be fully opened.
As a result, by the mobile aperture regulation for realizing throat of tapered plug 372, and then realize to flow of steam at high temperature and Low Temperature Steam
Flow-rate ratio control, guarantee accurate control for heat capacity, realize with thermic load variation and stable regulation heat is supplied
It measures and power supply volume is maintained to stablize.
Such as Fig. 3, in some examples of the utility model, rectifying component 35 is generally formed into tubular structure, and rectifying component 35 is set
There is spiral lamination, spiral lamination is axially extending along the periphery wall of rectifying component 35, thus into one under steam flowing and energy separation principle
Step guarantees the energy separation of steam stream.
Such as Fig. 1, in some embodiments of the utility model, heat supply network unit further includes third heat exchanger 53, third heat exchange
Device 53 is connected with the second heat exchanger 52, and third heat exchanger 53 is connected with the steam (vapor) outlet of condensing-type cogeneration units, for example, the
Three heat exchangers 53 can be located between the steam (vapor) outlet of boiler 12 and heater 14.
As a result, when the thermic load of heat supply network unit is larger, for instance in spike heat supply period, control device opening can use
The steam (vapor) outlet of condensing-type cogeneration units and the communicating passage of third heat exchanger 53, so that condensing-type cogeneration units
Steam is directly entered third heat exchanger 53, directly carries out Multi-stage heating to the refrigerant in heat supply network unit by third heat exchanger 53,
The heat exchange for directly participating in heat supply network unit guarantees to realize steam power plant's maximum heat capacity of spike heat supply period for thermostabilization.
Such as Fig. 1, in some examples of the utility model, the exhaust steam residual heat circulatory system 100 further includes condensate tank 70, the
One heat exchanger 51, the second heat exchanger 52 and third heat exchanger 53 are connected with condensate tank 70, and pass through condensate tank 70
It is connected with condensing-type cogeneration units, thus changing First Heat Exchanger 51, the second heat exchanger 52 and third heat exchanger 53
Steam condensation after heat, is convenient for UTILIZATION OF VESIDUAL HEAT IN, energy saving.
Such as Fig. 1, in some examples of the utility model, control device further includes temperature-decreased pressure reducer 61 and flow control valve
62, temperature-decreased pressure reducer 61 and flow control valve 62 are arranged in series in the steam (vapor) outlet of condensing-type cogeneration units and third exchanges heat
It, can the effectively discharge to condensing-type cogeneration units by temperature-decreased pressure reducer 61 and flow control valve 62 between device 53
Steam carries out desuperheat, decompression and flow and adjusts, to realize the direct heating circulation of condensing-type cogeneration units, guarantee pair
The heat capacity of heat supply network unit, meanwhile, also guarantee the safety of the exhaust steam residual heat circulatory system 100.
Such as Fig. 1, in some examples of the utility model, the exhaust steam residual heat circulatory system 100 further includes the second condensate pump
81, water circulating pump 82 and dirt separator 90, condensate pump are located between heater 14 and condensate tank 70 to guarantee the first heat exchange
The circular flow of the condensed water formed after the heat exchange of device 51, the second heat exchanger 52 and third heat exchanger 53, water circulating pump 82 remove
Dirty device 90 is located at the water return pipeline of heat supply network unit, to guarantee to enter multi-stage heat exchanger (First Heat Exchanger 51, the second heat exchanger 52
And third heat exchanger 53) use reliability, prolong the service life.
According to other compositions of the exhaust steam residual heat circulatory system 100 of the utility model embodiment and operate for this field
All be for those of ordinary skill it is known, be not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that：
These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective
And modification, the scope of the utility model are defined by the claims and their equivalents.
Claims (12)
1. a kind of exhaust steam residual heat circulatory system, which is characterized in that including：
Condensing-type cogeneration units；
Back pressure type cogeneration units, the steam inlet of the back pressure type cogeneration units and the condensing-type cogeneration of heat and power machine
The steam (vapor) outlet of group is connected；
Energy separation device, the energy separation device have air intake, cold side outlet, hot end outlet, the air intake and institute
The steam (vapor) outlet for stating back pressure type cogeneration units is connected；
Heat supply network unit, the heat supply network unit include the First Heat Exchanger being sequentially connected and the second heat exchanger, the First Heat Exchanger
It is connected with the cold side outlet, second heat exchanger is exported with the hot end and the steaming of the back pressure type cogeneration units
Vapor outlet is connected, and the First Heat Exchanger and second heat exchanger are connected with the condensing-type cogeneration units；
Control device, the control device be configured to can control the back pressure type cogeneration units direct circulation mode with
Switchover operation between adjustable heat supply mode.
2. the exhaust steam residual heat circulatory system according to claim 1, which is characterized in that the condensing-type cogeneration units packet
It includes：
Boiler；
Condensing turbine, the condensing turbine are connected with the boiler and drive fortune by the steam that the boiler is discharged
Turn, the condensing turbine is for driving generating set；
Condenser, the condenser are connected to coagulate the steam being discharged from the condensing turbine with the condensing turbine
Form water.
3. the exhaust steam residual heat circulatory system according to claim 2, which is characterized in that the condensing-type cogeneration units are also
Including：
Heater, the heater are connected between the condenser and the boiler, and the heater is changed with described first
Hot device is connected with second heat exchanger；
Boiler water supply pump and the first condensate pump, the boiler water supply pump is located between the boiler and the heater, described
First condensate pump is located between the condenser and the heater.
4. the exhaust steam residual heat circulatory system according to claim 1, which is characterized in that the back pressure type cogeneration units packet
It includes：For driving the back pressure turbine of generating set, the control device includes:
Inlet valve, the inlet valve are set between the steam (vapor) outlet and the air intake of the back pressure type cogeneration units；
Bypass valve, the bypass valve be set to the back pressure type cogeneration units steam (vapor) outlet and second heat exchanger it
Between；
Hot end valve and cold end valve, the hot end valve are set to the hot end and export between second heat exchanger, the cold end valve
Between the cold side outlet and the First Heat Exchanger.
5. the exhaust steam residual heat circulatory system according to claim 1, which is characterized in that the energy separation device includes：
It is vortexed cavity, the vortex cavity is connected with the steam (vapor) outlet of the back pressure type cogeneration units；
High temperature pipe, the high temperature pipe are connected to the side of the vortex cavity；
Cryotronl, the cryotronl with it is described vortex cavity the other side be connected to and with the high temperature pipe it is coaxially arranged, it is described low
Temperature pipe and the high temperature pipe are respectively provided with the helical duct extended along its axial screw, the cryotronl and the vortex cavity
Connectivity part be equipped with orifice plate；
Rectifying component, the rectifying component run through in the high temperature pipe, the vortex cavity and the cryotronl and along described
The axial direction of high temperature pipe extends.
6. the exhaust steam residual heat circulatory system according to claim 5, which is characterized in that the separate vortex of the high temperature pipe
One end of cavity forms the hot end outlet, and one end far from the vortex cavity of the cryotronl forms the cold end and goes out
Mouthful.
7. the exhaust steam residual heat circulatory system according to claim 5, which is characterized in that the energy separation device further includes adjusting
Control valve is saved, the adjusting control valve is set in the high temperature pipe and the neighbouring hot end exports.
8. the exhaust steam residual heat circulatory system according to claim 7, which is characterized in that the adjusting control valve includes：
Annular stop portion, the annular stop portion are set to the inner wall of the high temperature pipe；
Tapered plug, the conical surface of the tapered plug limit between the conical surface and the annular stop portion towards the annular stop portion
Steam flow channel be formed as throat, the tapered plug is removable along the axial direction of the high temperature pipe；
Motor, the motor are connected to drive the tapered plug to move along the axial direction of the high temperature pipe with the tapered plug.
9. the exhaust steam residual heat circulatory system according to claim 5, which is characterized in that the rectifying component is formed as tubulose knot
Structure, the tubular structure periphery wall are equipped with along its axially extending spiral lamination.
10. the exhaust steam residual heat circulatory system according to claim 1, which is characterized in that the heat supply network unit further includes：
Third heat exchanger, the third heat exchanger are connected with second heat exchanger, and the third heat exchanger and the condensing
The steam (vapor) outlet of formula cogeneration units is connected.
11. the exhaust steam residual heat circulatory system according to claim 10, which is characterized in that further include：Condensate tank, it is described solidifying
Case is born water to change set on the condensing-type cogeneration units with the First Heat Exchanger, second heat exchanger and the third
Between hot device.
12. the exhaust steam residual heat circulatory system according to claim 10, which is characterized in that further include：Temperature-decreased pressure reducer and
The steam that flow control valve, the temperature-decreased pressure reducer and the flow control valve are set to the condensing-type cogeneration units goes out
Between mouth and the third heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820433162.8U CN208106512U (en) | 2018-03-28 | 2018-03-28 | The exhaust steam residual heat circulatory system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056403A (en) * | 2019-04-29 | 2019-07-26 | 东方电气集团东方汽轮机有限公司 | It is connected with the steam extraction back pressure heating type steam turbine and application method of Analysis of Exhaust Steam Recovering System |
| CN110318834A (en) * | 2018-03-28 | 2019-10-11 | 国家电投集团科学技术研究院有限公司 | The exhaust steam residual heat circulatory system |
| CN112564549A (en) * | 2020-11-30 | 2021-03-26 | 湖南大学 | Control device and control method for automobile generated power |
-
2018
- 2018-03-28 CN CN201820433162.8U patent/CN208106512U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318834A (en) * | 2018-03-28 | 2019-10-11 | 国家电投集团科学技术研究院有限公司 | The exhaust steam residual heat circulatory system |
| CN110056403A (en) * | 2019-04-29 | 2019-07-26 | 东方电气集团东方汽轮机有限公司 | It is connected with the steam extraction back pressure heating type steam turbine and application method of Analysis of Exhaust Steam Recovering System |
| CN112564549A (en) * | 2020-11-30 | 2021-03-26 | 湖南大学 | Control device and control method for automobile generated power |
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