CN207486938U - A kind of heat pump heat distribution system suitable for steam power plant's peak regulation - Google Patents
A kind of heat pump heat distribution system suitable for steam power plant's peak regulation Download PDFInfo
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- CN207486938U CN207486938U CN201721599097.8U CN201721599097U CN207486938U CN 207486938 U CN207486938 U CN 207486938U CN 201721599097 U CN201721599097 U CN 201721599097U CN 207486938 U CN207486938 U CN 207486938U
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- recirculated water
- heat pump
- heat supply
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Abstract
A kind of heat pump heat distribution system suitable for steam power plant's peak regulation of the utility model, can not only realize Peak Load Adjustment, can also fully recycle steam turbine generator waste heat, improve energy utilization rate.The system comprises heat supply network recirculated water water return pipeline, heat pump, heat exchangers for district heating and heat supply network recirculated water water supply lines；The output terminal of heat supply network recirculated water water return pipeline is connected with the heat supply network recirculated water input terminal of heat pump, the heat supply network recirculated water output terminal of heat pump is connected with the heat supply network recirculated water input terminal of heat exchangers for district heating, and the heat supply network recirculated water output terminal of heat exchangers for district heating is connected with heat supply network recirculated water water supply line；Heat pump is electric drive, and driving source, which is drawn, is connected to steam turbine generator；The low-temperature heat source of heat pump derives from steam turbine generator.
Description
Technical field
The utility model belongs to heat supply process field, is related to a kind of to increase the spirit of thermal power plant thermal power plant unit peaking performance
The heat pump of activity and heat exchangers for district heating combination heating system, more particularly to a kind of heat pump heat supply system suitable for steam power plant's peak regulation
System.
Background technology
Since electric energy cannot store, electric energy send out with using being synchronous, it is therefore necessary to ensure the equilibrium of supply and demand.Power train
Power load in system is often changed, in order to maintain active power balance, keeps system frequency stabilization, steam power plant is just
It needs to carry out peak regulation according to power load.
Existing steam power plant's peak regulation technique mainly receives peak regulation period steam turbine generator generating set institute using electric boiler
Electricity power, peak regulation during so as to fulfill electric load low ebb.Electric boiler peak regulation only from the demand of peak regulation, directly reduces online
The angle of electric load is set out, there is no from the point of view of the energy more makes full use of, due to during power generation, largely
Heat lost by steam turbine generator steam discharge, and electric boiler peak regulation does not recycle this partial heat completely, in energy
Than relatively low in the comprehensive utilization ratio in source.Therefore, a kind of energy that can have both improved unit and adapt to low electric load output demand is studied
Power, and the system that steam turbine generator waste heat improves energy utilization rate can be more absorbed, it is extremely important to the utilization of the energy.
Utility model content
For problems of the prior art, the utility model provides a kind of heat pump heat supply suitable for steam power plant's peak regulation
System can not only realize the effect of peak regulation, can also fully recycle steam turbine generator waste heat, reduce energy loss, carry
High energy source utilization rate.
The utility model is to be achieved through the following technical solutions：
A kind of heat pump heat distribution system suitable for steam power plant's peak regulation adds including heat supply network recirculated water water return pipeline, heat pump, heat supply network
Hot device and heat supply network recirculated water water supply line；
The output terminal of heat supply network recirculated water water return pipeline is connected with the heat supply network recirculated water input terminal of heat pump, the heat supply network cycle of heat pump
Water output terminal is connected with the heat supply network recirculated water input terminal of heat exchangers for district heating by heat supply network circulating water pipeline, the heat supply network of heat exchangers for district heating
Recirculated water output terminal is connected with the input terminal of heat supply network recirculated water water supply line；
Heat pump is used as driving heat source using electricity；The low-temperature heat source input terminal of heat pump passes through low-temperature heat source pipeline and turbine generator
The low-temperature heat source of machine provides end connection.
Preferably, side is equipped between the output terminal of heat supply network recirculated water water return pipeline and the heat supply network recirculated water output terminal of heat pump
Road, bypass are equipped with bypass valve, for adjusting the flow for the heat supply network recirculated water for flowing into heat pump.
Further, when the power load phase at a low ebb, bypass valve is closed.
Preferably, the low-temperature heat source of heat pump is steam turbine generator steam exhaust.
Preferably, the low-temperature heat source of heat pump is steam turbine generator recirculated water.
Preferably, the heat source input terminal of heat exchangers for district heating is connected with the output terminal of steam turbine generator extraction line.
Compared with prior art, the utility model has technique effect beneficial below：
The heat pump suitable for the heat pump heat distribution system of steam power plant's peak regulation of the utility model uses electrically driven (operated) mode, driving
The electric energy that power source is sent out in steam turbine generator, when in the peak regulation phase in use, heat pump consume part electric energy, so as to subtract
The electricity volume of few steam turbine generator, achievees the purpose that peak regulation；On the other hand, heat supply network recirculated water absorbs turbine generator by heat pump
Machine discharge waste heat, then from heat pump export heat supply network recirculated water be conveyed into again heat exchangers for district heating be further heated to it is required
It is externally confessed after temperature, the waste heat of steam turbine generator discharge can be recycled, steam turbine generator waste heat loss is avoided, improve energy
The utilization rate in source.So as to improve the thermal efficiency of steam power plant's entirety, and enable steam power plant defeated with lower electric power in heat supply period
Go out load, adapt to requirement of the power grid to thermal power plant unit underload flexible adjustment.
Further, it sets and bypasses in the junction of heat supply network recirculated water water return pipeline and heat pump, and in bypass by setting
Road valve can open or close bypass valve as needed, so as to control the connection of heat supply network recirculated water water return pipeline and heat pump, and root
According to the heat supply network circulating water flow that adjusting is needed to enter heat pump.
Further, the low-temperature heat source of heat pump can be steam turbine generator steam exhaust or steam turbine generator recirculated water, so as to
By steam exhaust or the waste heat recovery of steam turbine generator recirculated water.
Description of the drawings
Fig. 1 is the schematic diagram of the heat pump heat distribution system described in the utility model suitable for steam power plant's peak regulation.
In figure：Heat supply network recirculated water water return pipeline 1, heat pump 2, low-temperature heat source pipeline 3, driving heat source circuit 4, bypass valve 5, heat
Net circulating water pipeline 6, circulation pump of heat-supply network 7, steam turbine generator extraction line 8, heat exchangers for district heating 9, heat supply network recirculated water feed pipe
Road 10, bypass 11.
Specific embodiment
The utility model is described in further detail with reference to specific embodiment, described is to the utility model
Explanation rather than restriction.
As shown in Figure 1, a kind of heat pump heat distribution system suitable for steam power plant's peak regulation, including heat supply network recirculated water water return pipeline 1,
Heat pump 2, heat exchangers for district heating 9, heat supply network recirculated water water supply line 10.
The output terminal of heat supply network recirculated water water return pipeline 1 is connected with the heat supply network recirculated water input terminal of heat pump 2, the heat supply network of heat pump 2
Recirculated water output terminal is connected with the heat supply network recirculated water input terminal of heat exchangers for district heating 9 by heat supply network circulating water pipeline 6, heat supply network recirculated water
Circulation pump of heat-supply network 7, heat supply network recirculated water output terminal and the heat supply network recirculated water water supply line 10 of heat exchangers for district heating 9 are set on pipeline 6
Input terminal connection；
Using electricity, as driving heat source, in this example, driving heat source circuit 4 draws heat pump 2 is connected to steam turbine generator, so as to
To consume the electric energy that part steam turbine generator is sent out；Driving heat source circuit 4, which can also draw, is connected to online circuit；The low temperature of heat pump 2
Heat source input terminal is connected by low-temperature heat source pipeline 3 with steam turbine generator exhaust steam pipeline, so as to which steam turbine generator steam exhaust is as heat
The low-temperature heat source of pump 2 uses, and recycles steam exhaust heat.
Bypass 11 is additionally provided between the output terminal of heat supply network recirculated water water return pipeline 1 and the heat supply network recirculated water output terminal of heat pump 2,
Bypass 11 is equipped with bypass valve 5, for adjusting the flow for the heat supply network recirculated water for flowing into heat pump 2, when the power load phase at a low ebb
When, bypass valve 5 is closed, and heat supply network recirculated water is made to input heat exchangers for district heating 9 again after all being heated by heat pump 2, heat exchangers for district heating 9
Heat source input terminal is connected with the output terminal of steam turbine generator extraction line 8.
The application method of heat pump heat distribution system that the utility model is suitable for steam power plant's peak regulation is：
Work as peak times of power consumption, bypass valve 5 opens to the maximum, and heat pump 2 does not work, the heat supply network in heat supply network recirculated water water return pipeline 1
Recirculated water is delivered to heat exchangers for district heating 9 after the pressurization of circulation pump of heat-supply network 7, is led to by 11 input heat supply network circulating water pipeline 6 of bypass
Steam turbine generator steam extraction is crossed externally to confess heat supply network circulating water heating to required temperature by heat supply network recirculated water water supply line 10.
When the low power consumption phase, bypass valve 5 completely closes, and the heat supply network recirculated water in heat supply network recirculated water water return pipeline 1 is all defeated
The electrical energy drive sent out to heat pump 2, heat pump 2 using steam turbine generator is sent, by the thermal energy of the steam exhaust of low-temperature heat source steam turbine generator
Heat supply network recirculated water is passed to, by heat supply network circulating water heating, the heat supply network recirculated water after heating further heats again through heat exchangers for district heating 9
To required temperature, externally confessed by heat supply network recirculated water water supply line 10.
When in the non-peak regulation phase, it can be made in heat supply network recirculated water water return pipeline 1 by adjusting the aperture of bypass valve 5
Heat supply network recycles water section by 11 input heat supply network circulating water pipeline 6 of bypass, and input heat supply network follows after another part is heated by heat pump 2
Ring waterpipe 6, the heat supply network recirculated water inputted in heat supply network circulating water pipeline 6 are delivered to heat supply network after the pressurization of circulation pump of heat-supply network 7 and add
Heat supply network circulating water heating to required temperature is passed through heat supply network recirculated water water supply line 10 by hot device 9 by steam turbine generator steam extraction
Externally confess.
The utility model heat pump 2 uses electric drive, and steam turbine generator electricity amount can be directly absorbed in the peak regulation period, from
And the electricity volume of generator is reduced, realize peak regulation.Heat pump is used as low-temperature heat source heating heat by steam turbine generator steam discharge simultaneously
Net recirculated water so that the heat of steam turbine generator steam discharge can be absorbed, substantially increase the utilization ratio of the energy.
Claims (6)
1. a kind of heat pump heat distribution system suitable for steam power plant's peak regulation, which is characterized in that including heat supply network recirculated water water return pipeline
(1), heat pump (2), heat exchangers for district heating (9) and heat supply network recirculated water water supply line (10)；
The output terminal of heat supply network recirculated water water return pipeline (1) is connected with the heat supply network recirculated water input terminal of heat pump (2), the heat of heat pump (2)
Net recirculated water output terminal is connected with the heat supply network recirculated water input terminal of heat exchangers for district heating (9) by heat supply network circulating water pipeline (6), heat supply network
The heat supply network recirculated water output terminal of heater (9) is connected with the input terminal of heat supply network recirculated water water supply line (10)；
Heat pump (2) is used as driving heat source using electricity；The low-temperature heat source input terminal of heat pump (2) passes through low-temperature heat source pipeline (3) and vapour
The low-temperature heat source of turbine generator provides end connection.
2. a kind of heat pump heat distribution system suitable for steam power plant's peak regulation according to claim 1, which is characterized in that heat supply network follows
Bypass (11) is equipped between the output terminal of ring water water return pipeline (1) and the heat supply network recirculated water output terminal of heat pump (2), is bypassed on (11)
Equipped with bypass valve (5), for adjusting the flow for the heat supply network recirculated water for flowing into heat pump (2).
3. a kind of heat pump heat distribution system suitable for steam power plant's peak regulation according to claim 2, which is characterized in that work as electricity consumption
During load phase at a low ebb, bypass valve (5) is closed.
A kind of 4. heat pump heat distribution system suitable for steam power plant's peak regulation according to claim 1, which is characterized in that heat pump
(2) low-temperature heat source is steam turbine generator steam exhaust.
A kind of 5. heat pump heat distribution system suitable for steam power plant's peak regulation according to claim 1, which is characterized in that heat pump
(2) low-temperature heat source is steam turbine generator recirculated water.
6. a kind of heat pump heat distribution system suitable for steam power plant's peak regulation according to claim 1, which is characterized in that heat supply network adds
The heat source input terminal of hot device (9) is connected with the output terminal of steam turbine generator extraction line (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721599097.8U CN207486938U (en) | 2017-11-21 | 2017-11-21 | A kind of heat pump heat distribution system suitable for steam power plant's peak regulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721599097.8U CN207486938U (en) | 2017-11-21 | 2017-11-21 | A kind of heat pump heat distribution system suitable for steam power plant's peak regulation |
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| CN207486938U true CN207486938U (en) | 2018-06-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747759A (en) * | 2017-11-21 | 2018-03-02 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of heat pump heat distribution system and heat supply method suitable for steam power plant's peak regulation |
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2017
- 2017-11-21 CN CN201721599097.8U patent/CN207486938U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747759A (en) * | 2017-11-21 | 2018-03-02 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of heat pump heat distribution system and heat supply method suitable for steam power plant's peak regulation |
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