CN110345541A

CN110345541A - A kind of gas power station thermoelectricity collaboration heating system and method

Info

Publication number: CN110345541A
Application number: CN201910602403.6A
Authority: CN
Inventors: 张世钢; 苗青; 陈春寅
Original assignee: Beijing Thermal Energy Technology Research Co Ltd
Current assignee: Beijing Thermal Energy Technology Research Co Ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2019-10-18
Anticipated expiration: 2039-07-05
Also published as: CN110345541B

Abstract

The invention discloses a kind of gas power station thermoelectricity collaboration heating system and methods, the system includes heat-exchange and energy-storage system, electric heat regulating system and heat supply network heating system, heat-accumulator tank takes hot side to be connected to form heat-exchange and energy-storage circulation loop with heat exchanger by the first heat supply water pipe and first time cold water pipe, heat-accumulator tank forms electricity by the second heat supply water pipe and second time cold water pipe and electric heat pump and adjusts soft circulation circuit, and the step temperature rising device, heat supply network heat supply water pipe and heat supply network including electric heat pump return cold water pipe and constitute heat supply network heating system；This method includes the runing adjustment of heat-accumulator tank heat accumulation and electric heat pump.A kind of gas power station thermoelectricity disclosed by the invention cooperates with heating system, gas power station waste heat boiler smoke exhaust heat can effectively be recycled, it is used for the flue gas heat of recycling to heat hot net water, improve the heat capacity of steam power plant, cooperated simultaneously by the adjusting of electric heat pump and heat-accumulator tank, the peak-valley difference of steam power plant's power surges phase Yu electric power trough period network load can be alleviated.

Description

A kind of gas power station thermoelectricity collaboration heating system and method

Technical field

The present invention relates to energy fields, and in particular to a kind of gas power station thermoelectricity collaboration heating system and method.

Background technique

Fuel gas generation is the process for generating heat using natural gas or other fuel gas to generate electricity.From 50 years 20th century Since climbing up power generation industries stage for gas turbine, the gas power station advantage high by generating efficiency height and the thermal efficiency is alive Huge development is achieved within the scope of boundary and has been gained most valuable experience.Wherein, American-European countries experience have shown that: from safety and tune The requirement at peak is set out, and the Gas Turbine Generating Units that installation power share is 8%~10% in power grid are necessary.China Experience also indicates that: the peak-valley difference difference of many area power grids in China is larger, and urgent need starting is fast, peaking performance is good, the construction period is short Gas turbine and its combined cycle come adapt to construction needs, it is especially even more so in coastal open area.

Electric heat pump is the important equipment of fuel gas generation, and the electricity with the low power consumption phase is needed due to the electric power of peak times of power consumption Power needs to have biggish otherness, but the electric heat pump either peak times of power consumption or electricity consumption of gas power plant are low at present The paddy phase continues working, and current gas power plant's peak times of power consumption power supply deficiency and low power consumption phase electric power is caused not to obtain It stores and wastes.

Summary of the invention

The purpose of the present invention is to provide a kind of gas power station thermoelectricity collaboration heating system and methods, to solve at present Gas power plant's peak times of power consumption power supply deficiency and low power consumption phase electric power the problem of not stored and being wasted.

The present invention provides a kind of gas power station thermoelectricity collaboration heating system, including heat-exchange and energy-storage system, electric heat regulating system With heat supply network heating system, the heat-exchange and energy-storage system includes heat exchanger, heat-accumulator tank, first for cold water pipe, the first backheat water pipe, institute The lower part and top for stating heat exchanger are respectively arranged with gas inlet and exhanst gas outlet；Described first for cold water pipe water outlet be arranged There are multiple first to be set to the upper of the heat exchanger for cold water pipe liquid distributor for cold water pipe liquid distributor, multiple described first Portion, the water inlet of the first backheat water pipe are set to the bottom of the heat exchanger, and the heat-accumulator tank cold side is provided with cold water Outlet and hot water inlet, described first for cold water pipe water inlet and the first backheat water pipe water outlet respectively with the storage The cooling water outlet of hot tank cold side is connected to hot water inlet；The heat-accumulator tank cold side is by described first for cold water pipe and described First backheat water pipe is connected to form heat-exchange and energy-storage circulation loop with the heat exchanger；The electricity heat regulating system includes the accumulation of heat Tank, the second heat supply water pipe, electric heat pump and second time cold water pipe；The heat-accumulator tank take hot side be provided with hot water outlet and cold water into Mouthful, the heat-accumulator tank take hot side hot water outlet and cooling water inlet respectively by the second heat supply water pipe and it is described second time it is cold Water pipe and the electric heat pump evaporator and outlet form electricity and adjust soft circulation circuit；The heat supply network heating system includes Step temperature rising device, net heat supply water pipe and heat supply network return cold water pipe, and the step temperature rising device includes the electric heat pump, the heat The water inlet of the water outlet and the heat supply network heat supply water pipe of netting back cold water pipe respectively with the condenser inlet of the electric heat pump and Outlet directly or indirectly connection.

Further, the heat-exchange and energy-storage system further includes first circulation pump, the first valve and the second valve, and described first Circulating pump is set to the first backheat water pipe or described first on cold water pipe, first valve and second valve divide It is not set to described first on cold water pipe and the first backheat water pipe；The electricity heat regulating system further includes third valve, the Four valves and second circulation pump, the third valve and the 4th valve are respectively arranged at the second heat supply water pipe and described On second time cold water pipe, the second circulation pump is set on the second heat supply water pipe or second time cold water pipe.

Preferably, the step temperature rising device further includes heat exchangers for district heating, and the heated side of the heat exchangers for district heating is provided with The side that is heated of steam inlet and condensate outlet, the heat exchangers for district heating is provided with to be heated and hot water inlet and is heated side hot water Outlet, being heated between hot water inlet and the condenser or evaporator outlet of the electric heat pump for the heat exchangers for district heating pass through Connecting tube connection, the hot water outlet that is heated of the heat exchangers for district heating are connected with the water inlet of the heat supply network heat supply water pipe；Institute The steam inlet for stating heat exchangers for district heating is communicated with steam pipe, and the condensate outlet of the heat exchangers for district heating has condensate pipe.

Further, the step temperature rising device further includes absorption heat pump, and the heat supply network returns cold water pipe and the absorption Formula heat pump absorber or condenser inlet are connected, the absorption heat pump absorber or condensator outlet and the electric heat pump Condenser inlet be connected, the condensator outlet of the electric heat pump and the heat exchangers for district heating to be heated hot water inlet logical Connecting tube is crossed to be connected；The thermoelectricity collaboration heating system further includes Sprayer Circulation system, and the Sprayer Circulation system includes institute State heat exchanger, the absorption heat pump, the first spray water inlet pipe, spray return pipe and third circulating pump, described first spray into The water outlet of water pipe is provided with the first spray water inlet pipe liquid distributor, and the first spray water inlet pipe liquid distributor is set to described The top of heat exchanger, the water inlet of the spray return pipe are set to the exchanger base, the water outlet of the spray return pipe The water inlet of mouth and the first spray water inlet pipe is connected with the evaporator of the absorption heat pump and outlet respectively, institute It states heat exchanger and Sprayer Circulation time is formed by the spray return pipe and the first spray water inlet pipe and the absorption heat pump Road, the third circulating pump are set on the spray return pipe or the first spray water inlet pipe.

Further, the step temperature rising device further includes dividing wall type heat exchanger, the dividing wall type heat exchanger hot side import It is connected with the spray water outlet by the spray return pipe, the dividing wall type heat exchanger hot side outlet and the suction The evaporator of receipts formula heat pump is connected；The dividing wall type heat exchanger cold side import returns cold water pipe with the heat supply network and is connected, The dividing wall type heat exchanger cold side outlet port is connected with the absorber of the absorption heat pump or condenser inlet.

Further, the Sprayer Circulation system further includes the second spray water inlet pipe, and the second spray water inlet pipe goes out Water end (W.E.) is provided with the second spray water inlet pipe liquid distributor, and the second spray water inlet pipe liquid distributor is set to the heat exchanger Middle part, the hot side outlet of the dividing wall type heat exchanger are intake with the absorption heat pump evaporator and second spray The water inlet of pipe is connected.

Further, the step temperature rising device further includes Turbine Cold Junction waste-heat recovery device, the Turbine Cold Junction Waste-heat recovery device takes the inlet and the absorption heat pump condenser or absorber outlet of hot side, and the steam turbine is cold The liquid outlet of end waste-heat recovery device cold side is connected with the electric heat pump condenser inlet；The Turbine Cold Junction waste heat The inlet and outlet of recyclable device cold side be respectively used to connection exhaust steam in steam turbine pipe or cooling cycle water pipe liquid outlet and into Liquid mouth.

The invention further relates to a kind of methods of gas power station thermoelectricity collaboration heat supply, using above-mentioned gas power station thermoelectricity Cooperate with heating system, the method for gas power station thermoelectricity collaboration heat supply the following steps are included:

Step S1: the flue gas come out from the back-end ductwork of the waste heat boiler of plant gas is entered to by the gas inlet The bottom of the heat exchanger；

At the same time, the low temperature liquid medium in the heat-accumulator tank enters to the heat exchange for cold water pipe by described first The top of device；

Step S2: low temperature liquid medium from multiple described first for cold water pipe liquid distributor spray, with from bottom to top upwards The direct contact heat transfer that heads on occurs for the flue gas risen, and the temperature of low temperature liquid medium is increased and fallen into the bottom of the heat exchanger, The temperature of flue gas declines and rises to the top of the heat exchanger upwards, is finally discharged from the exhanst gas outlet；

Step S3: under the action of first circulation pump, high-temperature liquid state medium is flowed back to by the first backheat water pipe In to the heat-accumulator tank；

Step S4: repeating said steps S1 to the step S3, the temperature of the liquid medium in the heat-accumulator tank is increasingly Height realizes thermal energy storage；

When being in electric power trough period, the runing adjustment method of thermoelectricity collaboration heating system the following steps are included:

Step A1: it opens the second circulation pump, open the third valve and the 4th valve；

Step A2: the high-temperature liquid state medium in the heat-accumulator tank enters the electric heat pump by the second heat supply water pipe Evaporator, after cooling down in evaporator, then the heat-accumulator tank is back to by second time cold water pipe；

Step A3: being powered and open the electric heat pump, and the electric heat pump is by consumption power extraction liquid medium by height The thermal energy that temperature is discharged to low temperature, and the low-temperature return water of heat supply network pipeline described in the energy heats is utilized, the liquid in the heat-accumulator tank Medium temperature is lower and lower therewith；

Step A4: low-temperature return water returns the condenser inlet that cold water pipe flows into the electric heat pump by the heat supply network, After heating up in condenser, heat user is supplied to finally by the heat supply network heat supply water pipe；

When being in power surges phase, the runing adjustment method of thermoelectricity collaboration heating system the following steps are included:

Step B1: it keeps the first circulation pump, first valve and second valve in the open state, shuts down The electric heat pump and second circulation pump close the third valve and the 4th valve；

Step B2: the low temperature liquid medium in the heat-accumulator tank enters the heat exchanger for cold water pipe by described first It is interior, and sprayed from described first for cold water pipe liquid distributor, it heats up after being exchanged heat with the flue gas ramped up, passes through described first Backheat water pipe is back to the heat-accumulator tank, and the liquid medium temperature in the heat-accumulator tank is higher and higher therewith.

Preferably, before the step S1, heat exchangers for district heating is added；

In the step S4, the low-temperature return water that cold water pipe flows into is returned from the heat supply network and flows into the cold of the electric heat pump It further include step S5 after condenser and before it is supplied to heat user by the heat supply network heat supply water pipe, the step S5 packet Include following steps:

The high-temperature-hot-water flowed out from the condenser of the electric heat pump first passes through the connecting tube and flows into heat exchangers for district heating It is heated hot water inlet, heat exchange is carried out with the bleeder steam for entering the heat exchangers for district heating by steam pipe and then from institute The hot water outlet that is heated for stating heat exchangers for district heating flows out and becomes the higher high-temperature-hot-water of temperature, finally by the heat supply network heat supply Water pipe is supplied to heat user.

Preferably, before the step S1, absorption heat pump is added, and pass through spray return pipe and the first spray water inlet Pipe is connected to the heat exchanger and forms Sprayer Circulation system, in setting third circulating pump on the spray return pipe；

In the step S4, the low-temperature return water of Yu Suoshu heat supply network pipeline returns cold water pipe by the heat supply network and flows into the electricity Further include step S41 before the condenser inlet of dynamic heat pump, the step S41 the following steps are included:

The third circulating pump is opened, a part of high-temperature liquid state medium of the exchanger base passes through the spray return water Pipe flows into the absorption heat pump, with by the heat supply network return cold water pipe flow into the low-temperature return water of the absorption heat pump into Row heat exchange；

After completing heat exchange, from the high-temperature liquid state medium that the heat exchanger flows back to, temperature drops in the absorption heat pump It is low, then the top that water inlet pipe is back to the heat exchanger is sprayed by described first, finally from the first spray water inlet pipe cloth Liquid device spray and under, drop back into the bottom of the heat exchanger；

At the same time, low-temperature return water temperature raising in the absorption heat pump that cold water pipe flows into is returned from the heat supply network, Then the condenser of the electric heat pump is flowed into.

Preferably, before the step S1, dividing wall type heat exchanger is added；

In the step S41, the low-temperature return water that Yu Suoshu heat supply network returns cold water pipe flows into the absorption heat pump and absorbs Further include step S40 before device, the step S40 the following steps are included:

The high-temperature liquid state medium of the exchanger base flows into the dividing wall type heat exchanger by the spray return pipe Hot side is carried out with the low-temperature return water for returning the heat supply network pipeline that cold water pipe flows into the dividing wall type heat exchanger cold side by the heat supply network Heat exchange；

After completing heat exchange, from the high-temperature liquid state medium that the heat exchanger flows back to, temperature drops in the dividing wall type heat exchanger It is low, then flow into the absorption heat pump；

At the same time, the heat supply network returns temperature in dividing wall type heat exchanger described in the low-temperature return water that cold water pipe flows into and increases, so After flow into the absorption heat pump.

Preferably, before the step S1, the second spray water inlet pipe, the water outlet of the second spray water inlet pipe are added It is provided with the second spray water inlet pipe liquid distributor, the second spray water inlet pipe liquid distributor is set in the heat exchanger Portion, it is described second spray water inlet pipe water inlet and the absorption heat pump evaporator with the dividing wall type heat exchanger Hot side outlet is connected；

It is further comprising the steps of in the step S40:

The liquid medium flowed out from the dividing wall type heat exchanger hot side outlet is divided into two-way, flows into all the way described absorption Evaporator with heat pump import, another way is flowed into the middle part of the heat exchanger by the second spray water inlet pipe to be sprayed, and from top Described first for cold water pipe liquid distributor and it is described first spray water inlet pipe liquid distributor spray liquid medium in aerial phase Mixing, drops back into jointly to the bottom of the heat exchanger.

Preferably, before the step S1, steam turbine is added between the electric heat pump and the absorption heat pump Cold end waste-heat recovery device；

In the step S41, the low-temperature return water of cold water pipe inflow is returned in the absorption type heat pump temperature from the heat supply network Further include step S42 after raising and before the condenser for flowing into the electric heat pump, the step S42 further include with Lower step:

Return that cold water pipe flows into and low-temperature return water through the absorption heat pump heat temperature raising is from the absorption from the heat supply network After formula heat pump condenser outlet outflow, the inlet that the Turbine Cold Junction waste-heat recovery device takes hot side is flowed into, and from institute The exhaust steam in steam turbine or cooling circulating water for stating the import inflow of Turbine Cold Junction waste-heat recovery device cold side exchange heat；

After completing heat exchange, cold water pipe is returned from the heat supply network and is flowed into and through the low temperature of the absorption heat pump heat temperature raising time Coolant-temperature gage continues to increase, and finally flows into the condenser of the electric heat pump.

The beneficial effects of the present invention are:

The invention discloses a kind of gas power station thermoelectricity collaboration heating system and methods, utilize heat-exchange and energy-storage circulation loop Realize that cryogenic liquid medium and high-temperature flue gas exchange heat, and by thermal energy storage in heat-accumulator tank, when being in electric power trough period, electricity is adjusted Soft circulation circuit closure opens work, and electric heat pump is by the liquid medium in consumption power extraction heat-accumulator tank by high temperature to low temperature The thermal energy of release, and the low-temperature return water of the energy heats heat supply network pipeline is utilized, the liquid medium temperature in heat-accumulator tank is more next therewith It is lower；When being in power surges phase, electricity adjusts soft circulation circuit disconnection to stop working, and heat-exchange and energy-storage circulation loop closure maintains work Make, heat-exchange and energy-storage circulation loop carries out cryogenic liquid medium and high-temperature flue gas to continue heat exchange, makes the liquid medium in heat-accumulator tank Temperature is higher and higher, realizes the lasting heat accumulation energy of heat-accumulator tank；In order to guarantee the heating efficiency of heat supply network pipeline low-temperature return water, building packet Step temperature rising device, heat supply network heat supply water pipe and heat supply network time cold water pipe composition heat supply network heating system including electric heat pump are included, is passed through The alternate run of electric heat pump improves the transmission efficiency of the heat accumulation of heat-accumulator tank using multistage ladder heat temperature raising technology.It can By the cooperation of runing adjustment and heat-accumulator tank in different times electric heat pump, the load fluctuation of power grid is adjusted, reduces power grid Peak-valley difference has the function of peak load shifting.Gas power station waste heat boiler smoke exhaust heat can not only be effectively recycled, heat is improved The heat capacity of power plant, while the peak-valley difference of steam power plant's power surges phase Yu electric power trough period network load can also be alleviated, it is real The adjustment of Xian Liao steam power plant power supply volume, not only avoids the contradiction of gas power plant's heat waste, additionally it is possible to by the waste heat of recycling For heating heat supply network pipeline to be allowed to provide heat for heat user.

Detailed description of the invention

Fig. 1 is a kind of basic structure signal for gas power station thermoelectricity collaboration heating system that the embodiment of the present invention 1 provides Figure；

Fig. 2 is that the thermoelectricity for adding heat exchangers for district heating based on embodiment 1 that the embodiment of the present invention 2 provides cooperates with heating system Structural schematic diagram；

Fig. 3 is that the thermoelectricity for adding absorption heat pump based on embodiment 2 that the embodiment of the present invention 3 provides cooperates with heating system Structural schematic diagram；

Fig. 4 is that the thermoelectricity for adding dividing wall type heat exchanger based on embodiment 3 that the embodiment of the present invention 4 provides cooperates with heating system Structural schematic diagram；

Fig. 5 is the thermoelectricity collaboration heating system optimized after spray pipeline based on embodiment 4 that the embodiment of the present invention 5 provides Structural schematic diagram；

Fig. 6 is the thermoelectricity association that Turbine Cold Junction waste-heat recovery device is added based on embodiment 5 that the embodiment of the present invention 6 provides With the structural schematic diagram of heating system.

Specific embodiment

Embodiment 1

Embodiment 1 provides a kind of most basic gas power station thermoelectricity collaboration heating system, carries out below to its structure detailed Thin description.

With reference to Fig. 1, the gas power station thermoelectricity cooperate with heating system include including heat-exchange and energy-storage system, electric heat regulating system and Heat supply network heating system.

Wherein, heat-exchange and energy-storage system includes heat exchanger 1, heat-accumulator tank 2, first for cold water pipe 7, the first backheat water pipe 8, first Circulating pump P1, the first valve V1 and the second valve V2,

The lower part and top of heat exchanger 1 are respectively arranged with gas inlet 5 and exhanst gas outlet 6, and gas inlet 5 is for being connected to combustion The back-end ductwork of the waste heat boiler of pneumoelectric factory, exhanst gas outlet 6 is for discharging the flue gas ramped up inside heat exchanger 1；

First is provided with multiple first for cold water pipe liquid distributor 70 for the water outlet of cold water pipe 7, and multiple first for cold water Pipe liquid distributor 70 is set to the top of heat exchanger 1, and the water inlet of the first backheat water pipe 8 is set to the bottom of heat exchanger 1, accumulation of heat 2 cold side of tank is provided with cooling water outlet and hot water inlet, first for the water inlet and the first backheat water pipe 8 of cold water pipe 7 water outlet Mouth is connected to the cooling water outlet of 2 cold side of heat-accumulator tank and hot water inlet respectively；

2 cold side of heat-accumulator tank is connected to formation heat exchange for cold water pipe 7 and the first backheat water pipe 8 by first with heat exchanger 1 and stores Energy circulation loop, first circulation pump P1 are set on the first backheat water pipe 8, and the first valve V1 and the second valve V2 are respectively arranged at First on cold water pipe 7 and the first backheat water pipe 8；

Electric heat regulating system includes heat-accumulator tank 2, the second heat supply water pipe 10, electric heat pump 3, second times cold water pipes 9, third valves V3, the 4th valve V4 and second circulation pump P2,

Heat-accumulator tank 2 takes hot side to be provided with hot water outlet and cooling water inlet, heat-accumulator tank 2 take hot side hot water outlet and cold water into Mouth forms electricity by the second heat supply water pipe 10 and second time cold water pipe 9 and 3 evaporator of electric heat pump and outlet respectively Soft circulation circuit is adjusted, third valve V3 and the 4th valve V4 are respectively arranged on the second heat supply water pipe 10 and second time cold water pipe 9, Second circulation pump P2 is set on the second heat supply water pipe 10 or second time cold water pipe 9；

Heat supply network heating system includes that step temperature rising device, net heat supply water pipe 15 and heat supply network return cold water pipe 13, step temperature rising dress Set including electric heat pump 3, heat supply network return cold water pipe 13 water outlet and heat supply network heat supply water pipe 15 water inlet respectively with electric heat pump 3 Condenser inlet with outlet be directly or indirectly connected to.

Preferably, heat exchanger 1 is direct-contact heat exchanger.

Preferably, liquid distributor 70 can be the various cloth liquid forms such as nozzle, spray head, porous plate, liquid distributor, cloth liquid bath it One, specifically, liquid distributor 70 includes multiple spray heads, and passes through pipeline connection between spray head.

Preferably, select water as the liquid medium to circulate in heat-exchange and energy-storage circulation loop.

Embodiment 1 is realized by electric heat pump 3 to heat supply network pipeline using electric heat pump 3 as one of step temperature rising device Low-temperature return water realizes level-one heating.

Preferably, heat-accumulator tank 2 takes the hot water outlet of hot side and the hot water inlet of cold side that can be respectively set, and can also close And be a mouth, when merging into a mouth, which is connected with the first backheat water pipe 8 with the second heat supply water pipe 10 simultaneously；It stores Hot tank 2 takes the cooling water inlet of hot side and the cooling water outlet of cold side that can be respectively set, and also can be merged into a mouth, works as merging When for a mouth, which is connected with first for cold water pipe 7 and second time cold water pipe 9 simultaneously, specifically, can be used three and leads to It connects.

It should be noted that electric heat pump 3 is with the side that heat-accumulator tank 2 is used to directly heat or be connected to heat supply network heating system Hot side is taken, the side for exchanging heat with heat supply network heating system is cold side, similarly hereinafter.

Embodiment 2

On the basis of embodiment 1, in order to further increase the heating efficiency to heat supply network pipeline low-temperature return water, embodiment 2 Heat exchangers for district heating 4 is added, its connection relationship is described in detail below.

With reference to Fig. 2, step temperature rising device further includes heat exchangers for district heating 4, and heat exchangers for district heating 4 is existing mature technology, point For diversified forms such as steam water heat exchanger or water-water heat exchangers, preferred shell-tube type steam water heat exchanger in embodiment 2, the shell-tube type Steam water heat exchanger includes steam inlet, condensate outlet, the outlet of vapour side gland steam exhauster, healed water, healed water import and water side row Steam pipe etc..

As a kind of specific embodiment, the heated side of heat exchangers for district heating 4 is provided with steam inlet and condensate outlet, heat The side that is heated of net heater 4 is provided with to be heated and hot water inlet and is heated side hot water outlet, and heat exchangers for district heating 4 is heated It is connected between hot water inlet and the condensator outlet of electric heat pump 3 by connecting tube 14, the hot water that is heated of heat exchangers for district heating 4 goes out Mouth is connected with the water inlet of heat supply network heat supply water pipe 15.

In order to make full use of the bleeder steam of power plant, bleeder steam can be passed through into steam pipe 12 and heat exchangers for district heating 4 steam inlets are connected, and return to power plant thermal system by condensate pipe 16 with the condensate after hot net water heat exchange.

Embodiment 2 the difference from embodiment 1 is that: the low-temperature return water of heat supply network pipeline heats up in 3 condenser of electric heat pump After heat absorption, and it is indirect heat user is supplied to by heat supply network heat supply water pipe 15, but heat supply network is entered by connecting tube 14 and is heated The further heat temperature raising of device 4, then heat user is supplied to by heat supply network heat supply water pipe 15.

In embodiment 2, step temperature rising device is made of 4 two heating equipments of electric heat pump 3 and heat exchangers for district heating, passes through electricity The stack combinations effect of dynamic heat pump 3 and heat exchangers for district heating 4, realizes and heats to the low-temperature return water two-stage ladder of heat supply network pipeline.

Embodiment 3

On the basis of embodiment 2, in order to improve the flue gas heat exchanger effectiveness in heat exchanger 1 and improve to heat supply network pipeline The heating efficiency of low-temperature return water, embodiment 3 add Sprayer Circulation system and absorption heat pump 18, carry out below to its connection relationship Detailed description.

With reference to Fig. 3, step temperature rising device further includes absorption heat pump 18, which includes evaporator, condensation Device, absorber and generator etc., wherein heat supply network returns cold water pipe 13 and can not only be connected with 18 absorber of absorption heat pump, but also can be with It is connected with condenser, 18 absorber of absorption heat pump or condensator outlet are connected with the condenser inlet of electric heat pump 3.Tool Body, heat supply network returns cold water pipe 13 and is connected with the absorber import of absorption heat pump 18, the absorber outlet of absorption heat pump 18 It is connected with the condenser inlet of absorption heat pump 18, the condensator outlet of absorption heat pump 18 and the condenser of electric heat pump 3 Import is connected, and the condensator outlet of electric heat pump 3 is connected with the hot water inlet that is heated of heat exchangers for district heating 4 by connecting tube 14 It is logical.

It further includes Sprayer Circulation system that thermoelectricity, which cooperates with heating system, and Sprayer Circulation system includes heat exchanger 1, absorption heat pump 18, the first spray water inlet pipe 19, spray return pipe 17 and third circulating pump P3.

The water outlet of first spray water inlet pipe 19 is provided with the first spray water inlet pipe liquid distributor 190, the first spray water inlet Pipe liquid distributor 190 is set to the top of heat exchanger 1, and the water inlet of spray return pipe 17 is set to 1 bottom of heat exchanger, sprays back The water outlet of water pipe 17 and first spray water inlet pipe 19 water inlet respectively with the evaporator of absorption heat pump 18 and outlet It is connected,

Heat exchanger 1 forms Sprayer Circulation by spray return pipe 17 and the first spray water inlet pipe 19 and absorption heat pump 18 and returns Road, third circulating pump P3 are set on spray return pipe 17.

In embodiment 3, Sprayer Circulation circuit exchanges heat circulating liquid and the high-temperature flue gas in heat exchanger 1, a side Flue gas heat exchanger effectiveness can be improved in face, on the other hand the heat of acquisition can be used to heat the low-temperature return water of heat supply network pipeline. Specifically, liquid medium a part of 1 bottom of heat exchanger returns to heat-accumulator tank 2 by the first backheat water pipe 8, and another part passes through the Three circulating pump P3 enter the evaporator of absorption heat pump 18, return to heat exchanger 1 by the first spray water inlet pipe 19 after heat release cooling Spray.

The step temperature rising device of embodiment 3 is set by 4 three absorption heat pump 18, electric heat pump 3 and heat exchangers for district heating heating Standby, the low-temperature return water in heat supply network pipeline successively passes sequentially through absorption heat pump 18, electric heat pump 3 and heat exchangers for district heating 4, thus first It is heated up three times afterwards, substantially increases the heating effect of the low-temperature return water of heat supply network pipeline.

Embodiment 4

On the basis of embodiment 3, in order to continue to improve the heating efficiency to heat supply network pipeline low-temperature return water, embodiment 4 increases If dividing wall type heat exchanger 22 is below described in detail its connection relationship.

With reference to Fig. 4, step temperature rising device further includes dividing wall type heat exchanger 22, which is the existing of maturation Technology is divided into the diversified forms such as plate heat exchanger, jacketed type exchanger, immersion heat exchanger.

22 hot side import of dividing wall type heat exchanger is connected by spray return pipe 17 by connecting tube 14 with spray water outlet, 22 hot side outlet of dividing wall type heat exchanger is connected with the evaporator of absorption heat pump 18 by connecting tube 14.In this way, heat exchange Liquid medium a part of 1 bottom of device returns to heat-accumulator tank 2 by the first backheat water pipe 8, and another part passes through third circulating pump P3 Into dividing wall type heat exchanger 22, heat exchanger 1 is returned to by the first spray water inlet pipe 19 after heat release cooling and is sprayed.

22 cold side import of dividing wall type heat exchanger and heat supply network return cold water pipe 13 and are connected, 22 cold side outlet port of dividing wall type heat exchanger with The absorber import of absorption heat pump 18 is connected, the condenser of the absorber outlet and absorption heat pump 18 of absorption heat pump 18 Import is connected, and the condensator outlet of absorption heat pump 18 is connected with the condenser inlet of electric heat pump 3, electric heat pump 3 Condensator outlet is connected with the hot water inlet that is heated of heat exchangers for district heating 4, and heat exchangers for district heating 4 is heated hot water outlet and heat The water inlet of net heat supply water pipe 15 is connected.Heat supply network low-temperature return water successively passes through dividing wall type heat exchanger 22, absorption heat pump as a result, 18, electric heat pump 3 and heat exchangers for district heating 4 are supplied to hot use finally by heat supply network heat supply water pipe 15 after level Four step temperature rising Family.

As a kind of specific embodiment, the first spray water inlet pipe 19 and first can be in heat exchanger 1 for cold water pipe 7 Sustained height spray, can also spray in different height.

Embodiment 5

In order to further enhance the heat exchange efficiency of heat exchanger 1, on the basis of embodiment 4, embodiment 5 improves dividing wall type The hot side outlet and absorption heat pump 18 of heat exchanger 22 and the connection relationship of heat exchanger 1, specific connection relationship are improved as follows:

With reference to Fig. 5, Sprayer Circulation system further includes the second spray water inlet pipe 24, and the water outlet of the second spray water inlet pipe 24 is set It is equipped with the second spray water inlet pipe liquid distributor 240, the second spray water inlet pipe liquid distributor 240 is set to the middle part of heat exchanger 1,

The hot side outlet of dividing wall type heat exchanger 22 sprays water inlet pipe 24 with 18 evaporator of absorption heat pump and second Water inlet be connected.Specifically, the hot side outlet of dividing wall type heat exchanger 22,18 evaporator of absorption heat pump and the second spray The water inlet for drenching water inlet pipe 24 is connected by threeway.

The liquid medium flowed out from the hot side outlet of dividing wall type heat exchanger 22 is divided into two-way, enters absorption heat pump 18 all the way Evaporator, another way, which enters in the middle part of heat exchanger 1, to be sprayed.At this point, there is spray pipeline top at 1 top of heat exchanger and middle part The water that portion sprays is mixed with middle part shower water, the common heat exchange for participating in lower semisection and flue gas.

Embodiment 6

On the basis of embodiment 5, in order to continue to improve the heating efficiency to heat supply network pipeline low-temperature return water, in electric heat pump Between 3 and absorption heat pump 18, embodiment 6 adds Turbine Cold Junction waste-heat recovery device 25, and connection relationship is as follows:

With reference to Fig. 6, step temperature rising device further includes Turbine Cold Junction waste-heat recovery device 25, the recycling of Turbine Cold Junction waste heat Device 25 is driven by extracted steam from turbine, can recycle the heat of steam exhaust or electric power plant circulating water.

Turbine Cold Junction waste-heat recovery device 25 takes the inlet of hot side to go out with 18 condenser of absorption heat pump or absorber Mouth connection, the liquid outlet of 25 cold side of Turbine Cold Junction waste-heat recovery device are connected with 3 condenser inlet of electric heat pump；Steamer The inlet and outlet of 25 cold side of machine cold end waste-heat recovery device is respectively used to connection exhaust steam in steam turbine pipe or cooling cycle water pipe Liquid outlet and inlet.

Specifically, 25 side of Turbine Cold Junction waste-heat recovery device is connected with exhaust steam in steam turbine or cooling cycle water pipe, The other side is connected with the low-temperature return water of heat supply network pipeline.The low-temperature return water of heat supply network pipeline successively successively passes through dividing wall type heat exchanger 22, absorption heat pump 18, Turbine Cold Junction waste-heat recovery device 25, electric heat pump 3 and heat exchangers for district heating 4, by Pyatyi step After heating, heat user is supplied to finally by heat supply network heat supply water pipe 15.

Further, Turbine Cold Junction waste-heat recovery device 25 is absorption heat pump, and specifically, it is preferable to steam exhaust absorption type heat Pump, evaporator are connected with exhaust steam in steam turbine pipe or cooling cycle water pipe.

Embodiment 7

Embodiment 7 provides a kind of method of gas power station thermoelectricity collaboration heat supply, the combustion gas thermoelectricity provided using embodiment 1 Factory's thermoelectricity cooperate with heating system, thermoelectricity cooperate with heat supply method the following steps are included:

Heat-accumulator tank heat accumulation:

Step S1: the flue gas come out from the back-end ductwork of the waste heat boiler of plant gas is entered to by gas inlet 5 to be changed The bottom of hot device 1；

At the same time, the top that the low temperature liquid medium in heat-accumulator tank 2 enters to heat exchanger 1 for cold water pipe 7 by first；

Step S2: low temperature liquid medium is sprayed from multiple first for cold water pipe liquid distributor 70, and is ramped up from bottom to top Flue gas the direct contact heat transfer that heads on occurs, the temperature of low temperature liquid medium increases and falls into the bottom of heat exchanger 1, flue gas Temperature declines and rises to the top of heat exchanger 1 upwards, is finally discharged from exhanst gas outlet 6；

Step S3: under the action of first circulation pumps P1, high-temperature liquid state medium flows back into accumulation of heat by the first backheat water pipe 8 In tank 2；

Step S4: repeating step S1 to step S3, and the temperature of the liquid medium in heat-accumulator tank 2 is higher and higher, realizes thermal energy Savings.

The runing adjustment of electric heat pump:

When be in electric power trough period when, thermoelectricity cooperate with heating system runing adjustment method the following steps are included:

Step A1: keeping first circulation pump P1, the first valve V1 and the second valve V2 is open state, opens second circulation It pumps P2, open third valve V3 and the 4th valve V4；

Step A2: the high-temperature liquid state medium in heat-accumulator tank 2 enters the evaporation of electric heat pump 3 by the second heat supply water pipe 10 Device after cooling down in evaporator, then passes through second time cold water pipe 9 and is back to heat-accumulator tank 2；

Step A3: it is powered and opens electric heat pump 3, electric heat pump 3 is by consumption power extraction liquid medium by high temperature to low The thermal energy of temperature release, and using the recirculated water of the energy heats heat supply network pipeline, until the liquid medium temperature in heat-accumulator tank 2 is more next It is lower；

Step A4: low-temperature return water returns the condenser inlet that cold water pipe 13 flows into electric heat pump 3 by heat supply network, in condenser After middle heating, heat user is supplied to finally by heat supply network heat supply water pipe 15；

When be in power surges phase when, thermoelectricity cooperate with heating system runing adjustment method the following steps are included:

Step B1: electric heat pump 3 and second circulation pump P2 are shut down, closes third valve V3 and the 4th valve V4, and is kept It is open state that first circulation, which pumps P1, the first valve V1 and the second valve V2,；

Step B2: low temperature liquid medium in heat-accumulator tank 2 enters in heat exchanger 1 by first for cold water pipe 7, and from first It is sprayed for cold water pipe liquid distributor 70, heats up after being exchanged heat with the flue gas ramped up, storage is back to by the first backheat water pipe 8 Hot tank 2, until the liquid medium temperature in heat-accumulator tank 2 is higher and higher.

Embodiment 8

Embodiment 8 is improved on the basis of embodiment 7, cooperates with heating system using the thermoelectricity that embodiment 2 provides, Thermoelectricity cooperates with the method for heat supply further comprising the steps of:

Before step S1, heat exchangers for district heating 4 is added according to embodiment 2；

In step s 4, the low-temperature return water that cold water pipe 13 flows into is returned from heat supply network to flow into after the condenser of electric heat pump 3 Further include step S5 and before it is supplied to heat user by heat supply network heat supply water pipe 15, step S5 the following steps are included:

The high-temperature-hot-water flowed out from the condenser of electric heat pump 3 first passes through connecting tube 14 and flows into being added for heat exchangers for district heating 4 Hot hot water inlet carries out heat exchange with the bleeder steam for entering heat exchangers for district heating 4 by steam pipe 12 and then heats from heat supply network The hot water outlet that is heated of device 4 flows out and becomes the higher high-temperature-hot-water of temperature, is supplied to finally by heat supply network heat supply water pipe 15 Heat user,

At the same time, steam power plant is flowed back to by condensate pipe 16 from the condensed water of the condensate of heat exchangers for district heating 4 outlet outflow to coagulate In water system.

Embodiment 9

Embodiment 9 is improved on the basis of embodiment 8, cooperates with heating system using the thermoelectricity that embodiment 3 provides, Thermoelectricity cooperates with the method for heat supply further comprising the steps of:

Before step S1, absorption heat pump 18 is added according to embodiment 3, and pass through spray return pipe 17 and the first spray Water inlet pipe 19 is connected to heat exchanger 1 and forms Sprayer Circulation system, in setting third circulating pump P3 on spray return pipe 17；

In step S4, the condensation that cold water pipe 13 flows into electric heat pump 3 is returned by heat supply network in the low-temperature return water of heat supply network pipeline Further include step S41 before device import, step S41 the following steps are included:

Third circulating pump P3 is opened, a part of high-temperature liquid state medium of 1 bottom of heat exchanger is flowed by spray return pipe 17 To the evaporator of absorption heat pump 18, the low-temperature return water that cold water pipe 13 flows into 18 absorber of absorption heat pump is returned with by heat supply network It exchanges heat；

After completing heat exchange, from the high-temperature liquid state medium that heat exchanger 1 flows back to, temperature is reduced in absorption heat pump 18, then is led to Cross the first spray water inlet pipe 19 and be back to the top of heat exchanger 1, finally from the first spray water inlet pipe liquid distributor 190 spray and Under, drop back into the bottom of heat exchanger 1；

At the same time, low-temperature return water temperature raising in absorption heat pump 18 that cold water pipe 13 flows into is returned from heat supply network, then Flow into the condenser of electric heat pump 3.

Embodiment 10

Embodiment 10 is improved on the basis of embodiment 9, cooperates with heat supply system using the thermoelectricity that embodiment 4 provides System, thermoelectricity cooperate with the method for heat supply further comprising the steps of:

Before step S1, dividing wall type heat exchanger 22 is added according to embodiment 4；

In step S41, before the low-temperature return water that heat supply network returns cold water pipe 13 flows into 18 absorber of absorption heat pump, also Including step S40, step S40 is the following steps are included: embodiment 4

The high-temperature liquid state medium of 1 bottom of heat exchanger flows into 22 hot side of dividing wall type heat exchanger by spraying return pipe 17, with It is exchanged heat by the low-temperature return water that heat supply network returns the heat supply network pipeline that cold water pipe 13 flows into 22 cold side of dividing wall type heat exchanger；

After completing heat exchange, from the high-temperature liquid state medium that heat exchanger 1 flows back to, temperature is reduced in dividing wall type heat exchanger 22, so The evaporator of absorption heat pump 18 is flowed into afterwards；

At the same time, heat supply network returns temperature in the low-temperature return water dividing wall type heat exchanger 22 that cold water pipe 13 flows into and increases, and then flows Enter to the absorber of absorption heat pump 18.

Embodiment 11

Embodiment 11 is improved on the basis of embodiment 10, cooperates with heat supply system using the thermoelectricity that embodiment 5 provides System, thermoelectricity cooperate with the method for heat supply further comprising the steps of:

Before step S1, the second spray water inlet pipe 24, the water outlet of the second spray water inlet pipe 24 are added according to embodiment 5 It is provided with the second spray water inlet pipe liquid distributor 240, the second spray water inlet pipe liquid distributor 240 is set to the middle part of heat exchanger 1, Hot side outlet of the water inlet and 18 evaporator of absorption heat pump of second spray water inlet pipe 24 with dividing wall type heat exchanger 22 It is connected；

In step s 40, further comprising the steps of:

The liquid medium flowed out from 22 hot side outlet of dividing wall type heat exchanger is divided into two-way, flows into absorption heat pump 18 all the way Evaporator, another way is flowed into the middle part of heat exchanger 1 by the second spray water inlet pipe 24 to be sprayed, with the first cooling supply from top The liquid medium that water pipe liquid distributor 70 and the first spray water inlet pipe liquid distributor 190 spray is mixed in the air, is dropped back into jointly To the bottom of heat exchanger 1.

Embodiment 12

Embodiment 12 is improved on the basis of embodiment 11, cooperates with heat supply system using the thermoelectricity that embodiment 6 provides System, thermoelectricity cooperate with the method for heat supply further comprising the steps of:

Before step S1, Turbine Cold Junction waste-heat recovery device is added between electric heat pump 3 and absorption heat pump 18 25；

In step S41, the low-temperature return water of the inflow of cold water pipe 13 is returned after the raising of 18 temperature of absorption heat pump from heat supply network Further include step S42 and before the condenser for flowing into electric heat pump 3, step S42 is further comprising the steps of:

Return that cold water pipe 13 flows into and low-temperature return water through 18 heat temperature raising of absorption heat pump is from absorption heat pump 18 from heat supply network After condensator outlet outflow, the inlet that Turbine Cold Junction waste-heat recovery device 25 takes hot side is flowed into, and from Turbine Cold Junction The exhaust steam in steam turbine or cooling circulating water that the import of 25 cold side of waste-heat recovery device flows into exchange heat；

After completing heat exchange, cold water pipe 13 is returned from heat supply network and is flowed into and low-temperature return water temperature through 18 heat temperature raising of absorption heat pump Degree continues to increase, and finally flows into the condenser of electric heat pump 3.

Although above having used general explanation and specific embodiment, the present invention is described in detail, at this On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore, These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.

Claims

1. a kind of gas power station thermoelectricity cooperates with heating system, which is characterized in that including heat-exchange and energy-storage system, electric heat regulating system and Heat supply network heating system,

The heat-exchange and energy-storage system includes heat exchanger (1), heat-accumulator tank (2), first for cold water pipe (7), the first backheat water pipe (8),

The lower part and top of the heat exchanger (1) are respectively arranged with gas inlet (5) and exhanst gas outlet (6)；

Described first is provided with first for cold water pipe liquid distributor (70) for the water outlet of cold water pipe (7), and described first for cold water Pipe liquid distributor (70) is set to the top of the heat exchanger (1), and the water inlet of the first backheat water pipe (8) is set to described The bottom of heat exchanger (1), heat-accumulator tank (2) cold side are provided with cooling water outlet and hot water inlet, and described first for cold water pipe (7) water outlet of water inlet and the first backheat water pipe (8) respectively with the cooling water outlet of the heat-accumulator tank (2) cold side and Hot water inlet connection；

Heat-accumulator tank (2) cold side is by described first for cold water pipe (7) and the first backheat water pipe (8) and the heat exchange Device (1) connection forms heat-exchange and energy-storage circulation loop；

The electricity heat regulating system includes the heat-accumulator tank (2), the second heat supply water pipe (10), electric heat pump (3) and second time cold water It manages (9)；

The heat-accumulator tank (2) takes hot side to be provided with hot water outlet and cooling water inlet, and the heat-accumulator tank (2) takes the hot water outlet of hot side Pass through the second heat supply water pipe (10) and second go back to cold water pipe (9) and the electric heat pump (3) respectively with cooling water inlet Evaporator and outlet form electricity and adjust soft circulation circuit；

The heat supply network heating system includes that step temperature rising device, heat supply network heat supply water pipe (15) and heat supply network go back to cold water pipe (13), described Step temperature rising device includes the electric heat pump (3), and the heat supply network returns the water outlet and the heat supply network supplying hot water of cold water pipe (13) The water inlet for managing (15) is directly or indirectly connected to the condenser inlet of the electric heat pump (3) and outlet respectively.

2. gas power station thermoelectricity as described in claim 1 cooperates with heating system, which is characterized in that

The heat-exchange and energy-storage system further includes first circulation pump (P1), the first valve (V1) and the second valve (V2), and described first Circulating pump (P1) is set to the first backheat water pipe (8) or described first on cold water pipe (7), first valve (V1) and Second valve (V2) is respectively arranged at described first on cold water pipe (7) and the first backheat water pipe (8)；

The electricity heat regulating system further includes third valve (V3), the 4th valve (V4) and second circulation pump (P2), the third valve Door (V3) and the 4th valve (V4) are respectively arranged at the second heat supply water pipe (10) and second time cold water pipe (9) On, the second circulation pump (P2) is set on the second heat supply water pipe (10) or second time cold water pipe (9).

3. gas power station thermoelectricity as claimed in claim 2 cooperates with heating system, which is characterized in that

The step temperature rising device further includes heat exchangers for district heating (4),

The heated side of the heat exchangers for district heating (4) is provided with steam inlet and condensate outlet, and the heat exchangers for district heating (4) is added Hot side, which is provided with, to be heated hot water inlet and is heated side hot water outlet,

Being heated between hot water inlet and the condensator outlet of the electric heat pump (3) for the heat exchangers for district heating (4) passes through company Take over (14) connection, the water inlet for being heated hot water outlet Yu the heat supply network heat supply water pipe (15) of the heat exchangers for district heating (4) It is connected；

The steam inlet of the heat exchangers for district heating (4) is communicated with steam pipe (12), and the condensate of the heat exchangers for district heating (4), which exports, to be connected It is connected with condensate pipe (16).

4. gas power station thermoelectricity as claimed in claim 3 cooperates with heating system, which is characterized in that

The step temperature rising device further includes absorption heat pump (18), and the heat supply network returns cold water pipe (13) and the absorption heat pump (18) absorber or condenser inlet are connected, absorption heat pump (18) absorber or condensator outlet and the electronic heat The condenser inlet of pump (3) is connected, the condensator outlet of the electric heat pump (3) and being added for the heat exchangers for district heating (4) Hot hot water inlet is connected by connecting tube (14)；

Thermoelectricity collaboration heating system further includes Sprayer Circulation system, the Sprayer Circulation system include the heat exchanger (1), The absorption heat pump (18), the first spray water inlet pipe (19), spray return pipe (17) and third circulating pump (P3),

The water outlet of first spray water inlet pipe (19) is provided with the first spray water inlet pipe liquid distributor (190), and described first Spray water inlet pipe liquid distributor (190) is set to the top of the heat exchanger (1), and the water inlet of spray return pipe (17) is set Be placed in the heat exchanger (1) bottom, the water outlet of spray return pipe (17) and first spray water inlet pipe (19) into The mouth of a river is connected with the evaporator of the absorption heat pump (18) and outlet respectively,

The heat exchanger (1) passes through the spray return pipe (17) and first spray water inlet pipe (19) and the absorption type heat It pumps (18) and forms Sprayer Circulation circuit, the third circulating pump (P3) is set to the spray return pipe (17) or first spray It drenches on water inlet pipe (19).

5. gas power station thermoelectricity as claimed in claim 4 cooperates with heating system, which is characterized in that

The step temperature rising device further includes dividing wall type heat exchanger (22),

Dividing wall type heat exchanger (22) hot side import is connected with the spray water outlet by the spray return pipe (17), Dividing wall type heat exchanger (22) hot side outlet is connected with the evaporator of the absorption heat pump (18)；

Dividing wall type heat exchanger (22) cold side import goes back to cold water pipe (13) with the heat supply network and is connected, the dividing wall type heat exchanger (22) cold side outlet port is connected with the absorber of the absorption heat pump (18) or condenser inlet.

6. gas power station thermoelectricity as claimed in claim 5 cooperates with heating system, which is characterized in that

The Sprayer Circulation system further includes the second spray water inlet pipe (24), and the water outlet of second spray water inlet pipe (24) is set It is equipped with the second spray water inlet pipe liquid distributor (240), second spray water inlet pipe liquid distributor (240) is set to the heat exchange The middle part of device (1),

The hot side outlet and the absorption heat pump (18) evaporator of the dividing wall type heat exchanger (22) and second spray The water inlet of leaching water inlet pipe (24) is connected.

7. gas power station thermoelectricity as claimed in claim 6 cooperates with heating system, which is characterized in that

The step temperature rising device further includes Turbine Cold Junction waste-heat recovery device (25),

The Turbine Cold Junction waste-heat recovery device (25) take hot side inlet and the absorption heat pump (18) condenser or Absorber outlet, the Turbine Cold Junction waste-heat recovery device (25) take liquid outlet and the electric heat pump (3) of hot side Condenser inlet is connected；

The inlet and outlet of Turbine Cold Junction waste-heat recovery device (25) cold side is respectively used to connection exhaust steam in steam turbine pipe Or the liquid outlet and inlet of cooling cycle water pipe.

8. a kind of method of gas power station thermoelectricity collaboration heat supply, using the gas power station as described in claim 2 to 7 is any Thermoelectricity cooperates with heating system, which is characterized in that the method for gas power station thermoelectricity collaboration heat supply the following steps are included:

Step S1: the flue gas come out from the back-end ductwork of the waste heat boiler of plant gas is entered to by the gas inlet (5) The bottom of the heat exchanger (1)；

At the same time, the low temperature liquid medium in the heat-accumulator tank (2) enters to described change for cold water pipe (7) by described first The top of hot device (1)；

Step S2: low temperature liquid medium is sprayed from described first for cold water pipe liquid distributor (70), and is ramped up from bottom to top The direct contact heat transfer that heads on occurs for flue gas, and the temperature of low temperature liquid medium is increased and fallen into the bottom of the heat exchanger (1), cigarette The temperature of gas declines and rises to the top of the heat exchanger (1) upwards, is finally discharged from the exhanst gas outlet (6)；

Step S3: under the action of the first circulation pumps (P1), high-temperature liquid state medium is flowed by the first backheat water pipe (8) It is back in the heat-accumulator tank (2)；

Step S4: repeating said steps S1 to the step S3, the temperature of the liquid medium in the heat-accumulator tank (2) is increasingly Height realizes thermal energy storage；

Step A1: it opens the second circulation pump (P2), open the third valve (V3) and the 4th valve (V4)；

Step A2: the high-temperature liquid state medium in the heat-accumulator tank (2) is entered described electronic by the second heat supply water pipe (10) The evaporator of heat pump (3) after cooling down in evaporator, then passes through second time cold water pipe (9) and is back to the heat-accumulator tank (2)；

Step A3: being powered and open the electric heat pump (3), the electric heat pump (3) by consumption power extraction liquid medium by The thermal energy that high temperature is discharged to low temperature, and the low-temperature return water of heat supply network pipeline described in the energy heats is utilized, in the heat-accumulator tank (2) Liquid medium temperature is lower and lower therewith；

Step A4: low-temperature return water returns the condenser inlet that cold water pipe (13) flow into the electric heat pump (3) by the heat supply network, After heating up within the condenser, heat user is supplied to finally by the heat supply network heat supply water pipe (15)；

Step B1: it keeps the first circulation pump (P1), first valve (V1) and second valve (V2) to be in and opens State shuts down the electric heat pump (3) and second circulation pump (P2), closes the third valve (V3) and the 4th valve Door (V4)；

Step B2: the low temperature liquid medium in the heat-accumulator tank (2) enters the heat exchanger for cold water pipe (7) by described first (1) it in, and is sprayed from described first for cold water pipe liquid distributor (70), heats up, pass through after being exchanged heat with the flue gas ramped up The first backheat water pipe (8) is back to the heat-accumulator tank (2), and the liquid medium temperature in the heat-accumulator tank (2) is more next therewith It is higher.

9. the method for gas power station thermoelectricity collaboration heat supply as claimed in claim 8, which is characterized in that

Before the step S1, heat exchangers for district heating (4) are added；

In the step S4, the low-temperature return water that cold water pipe (13) flow into is returned from the heat supply network and flows into the electric heat pump (3) Condenser after and before it is supplied to heat user by the heat supply network heat supply water pipe (15), further include step S5, it is described Step S5 the following steps are included:

The high-temperature-hot-water flowed out from the condenser of the electric heat pump (3) first passes through the connecting tube (14) and flows into heat exchangers for district heating (4) be heated hot water inlet, with by steam pipe (12) enter the heat exchangers for district heating (4) bleeder steam exchange heat And then the higher high-temperature-hot-water of temperature is flowed out and becomes from the hot water outlet that is heated of the heat exchangers for district heating (4), finally lead to It crosses the heat supply network heat supply water pipe (15) and is supplied to heat user.

10. the method for gas power station thermoelectricity collaboration heat supply as claimed in claim 8 or 9, which is characterized in that

It before the step S1, adds absorption heat pump (18), and passes through spray return pipe (17) and the first spray water inlet pipe (19) it is connected to the heat exchanger (1) and forms Sprayer Circulation system, in setting third circulating pump on the spray return pipe (17) (P3)；

In the step S4, the low-temperature return water of Yu Suoshu heat supply network pipeline goes back to cold water pipe (13) by the heat supply network and flows into the electricity Further include step S41 before the condenser inlet of dynamic heat pump (3), the step S41 the following steps are included:

The third circulating pump (P3) is opened, a part of high-temperature liquid state medium of heat exchanger (1) bottom passes through the spray Return pipe (17) flows into the absorption heat pump (18), described absorption with being flowed by the heat supply network time cold water pipe (13) The low-temperature return water of heat pump (18) exchanges heat；

After completing heat exchange, the high-temperature liquid state medium flowed back to from the heat exchanger (1) temperature in the absorption heat pump (18) It reduces, then is back to the top of the heat exchanger (1) by first spray water inlet pipe (19), finally from first spray Water inlet pipe liquid distributor (190) spray and under, drop back into the bottom of the heat exchanger (1)；

At the same time, the low-temperature return water flowed into from the heat supply network time cold water pipe (13) temperature liter in the absorption heat pump (18) Then height flows into the condenser of the electric heat pump (3).

11. the method for gas power station thermoelectricity collaboration heat supply as claimed in claim 10, which is characterized in that

Before the step S1, dividing wall type heat exchanger (22) are added；

In the step S41, the low-temperature return water that Yu Suoshu heat supply network goes back to cold water pipe (13) flows into the absorption heat pump (18) Further include step S40 before absorber, the step S40 the following steps are included:

The high-temperature liquid state medium of heat exchanger (1) bottom flows into the wall-type heat exchange by the spray return pipe (17) Device (22) hot side returns the heat supply network pipeline that cold water pipe (13) flow into the dividing wall type heat exchanger (22) cold side with by the heat supply network Low-temperature return water exchange heat；

After completing heat exchange, the high-temperature liquid state medium flowed back to from the heat exchanger (1) is in the dividing wall type heat exchanger (22) medium temperature Degree reduces, and then flows into the absorption heat pump (18)；

At the same time, the low-temperature return water that the heat supply network time cold water pipe (13) flows into temperature liter in the dividing wall type heat exchanger (22) Then height flows into the absorption heat pump (18).

12. the method for gas power station thermoelectricity collaboration heat supply as claimed in claim 11, which is characterized in that

Before the step S1, the second spray water inlet pipe (24) is added, the water outlet of second spray water inlet pipe (24) is set It is equipped with the second spray water inlet pipe liquid distributor (240), second spray water inlet pipe liquid distributor (240) is set to the heat exchange The middle part of device (1), it is described second spray water inlet pipe (24) water inlet and the absorption heat pump (18) evaporator with The hot side outlet of the dividing wall type heat exchanger (22) is connected；

It is further comprising the steps of in the step S40:

The liquid medium flowed out from the dividing wall type heat exchanger (22) hot side outlet is divided into two-way, flows into all the way described absorption Heat pump (18) evaporator, another way flow into spray in the middle part of the heat exchanger (1) by second spray water inlet pipe (24) Out, with described first from top for cold water pipe liquid distributor (70) and the first spray water inlet pipe liquid distributor (190) spray Liquid medium out is mixed in the air, is dropped back into jointly to the bottom of the heat exchanger (1).

13. the method for the gas power station thermoelectricity collaboration heat supply as described in claim 11 to 12 is any, which is characterized in that

Before the step S1, Turbine Cold Junction is added between the electric heat pump (3) and the absorption heat pump (18) Waste-heat recovery device (25)；

In the step S41, the low-temperature return water of cold water pipe (13) inflow is returned in the absorption heat pump (18) from the heat supply network It further include step S42, the step S42 is also after temperature increases and before the condenser for flowing into the electric heat pump (3) The following steps are included:

Cold water pipe (13) are gone back to from the heat supply network to flow into and low-temperature return water through the absorption heat pump (18) heat temperature raising is from described Absorption heat pump (18) condensator outlet outflow after, flow into the Turbine Cold Junction waste-heat recovery device (25) take hot side into Liquid mouth, with the exhaust steam in steam turbine or cooling cycle flowed into from the import of Turbine Cold Junction waste-heat recovery device (25) cold side Water exchanges heat；

After completing heat exchange, cold water pipe (13) are gone back to from the heat supply network and are flowed into and through the low of the absorption heat pump (18) heat temperature raising Warm return water temperature continues to increase, and finally flows into the condenser of the electric heat pump (3).