CN209484705U - Heat reservoir, heat accumulation heat supply association system and Turbo-generator Set heating system - Google Patents
Heat reservoir, heat accumulation heat supply association system and Turbo-generator Set heating system Download PDFInfo
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- CN209484705U CN209484705U CN201821715907.6U CN201821715907U CN209484705U CN 209484705 U CN209484705 U CN 209484705U CN 201821715907 U CN201821715907 U CN 201821715907U CN 209484705 U CN209484705 U CN 209484705U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 96
- 238000009825 accumulation Methods 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 129
- 238000005338 heat storage Methods 0.000 claims abstract description 36
- 238000003860 storage Methods 0.000 claims description 16
- 239000000284 extract Substances 0.000 claims description 6
- 238000000605 extraction Methods 0.000 abstract description 11
- 230000033228 biological regulation Effects 0.000 abstract description 7
- 238000010248 power generation Methods 0.000 description 5
- 230000000295 complement effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Abstract
The utility model relates to Thermal power engneering technical field, a kind of heat reservoir, heat accumulation heat supply association system and Turbo-generator Set heating system are disclosed.The heat reservoir includes heating apparatus with function of heat storage (1) for being heated to heat supply network return water and the heat-storing device (2) that is connected with the heating apparatus with function of heat storage (1) for storing the water after heating and supplying water to heat supply network, and the heating apparatus with function of heat storage (1) with steam turbine for being connected to extract steam in the steam turbine and be heated by the steam to the water in the heating apparatus with function of heat storage (1).The utility model heat reservoir can use when unit is in middle high load capacity and mostly be heated and be stored in the heat-storing device to the heat supply network return water in heat reservoir from steam extraction in steam turbine；When unit Ultra-low load operation, the water of heat-storing device is all or part of to thereby realize unit Ultra-low load operation to heat supply network heat supply, improves thermal power plant in the ultra-low load peak regulation and heat capacity of heat supply period.
Description
Technical field
The utility model relates to Thermal power engneering technical fields, join more particularly to a kind of heat reservoir, heat accumulation heat supply
Collaboration system and Turbo-generator Set heating system.
Background technique
It is to improve thermal power plant energy conversion efficiency to heat supplies such as city, industrial parks using thermal power plant steam extraction
Effective means, and reduce the effective measures of greenhouse gas emission.
And in the prior art, whether using the unit for taking out solidifying or circulating water heating, due to not using heat-storage technology,
It allows generating set to reach Ultra-low load operation unit economy very poor, therefore in the case where meeting Ultra-low load operation, needs
Solve the problems, such as large capacity heat accumulation.
Utility model content
The purpose of this utility model is to overcome units of the existing technology can not solve the problems, such as large capacity heat accumulation, mentions
For a kind of heat reservoir, which carries out heat accumulation by aqueous medium, realizes unit Ultra-low load operation, improves thermal power plant and exists
The ultra-low load peak regulation and heat capacity of heat supply period.
To achieve the goals above, on the one hand the utility model provides a kind of heat reservoir, including for heat supply network return water
The heating apparatus with function of heat storage that is heated and it is connected with the heating apparatus with function of heat storage for storing the water after heating and supplying water to heat supply network
Heat-storing device, the heating apparatus with function of heat storage extract steam in the steam turbine for being connected with steam turbine and pass through the steam pair
Water in the heating apparatus with function of heat storage is heated.
Preferably, the heat reservoir includes the first pipe for connecting heat supply network water return pipeline and the heating apparatus with function of heat storage
Road, the first pipe are equipped with the first valve.
Preferably, the heat reservoir includes the water storage box for storing the heat supply network return water, the water storage box with it is described
It is connected between heating apparatus with function of heat storage by second pipe, the second pipe is equipped with heat accumulation circulating pump.
Preferably, the heat reservoir includes the third pipeline for connecting heat supply network water return pipeline Yu the water storage box, institute
Third pipeline is stated equipped with the second valve.
Preferably, the heating apparatus with function of heat storage is connected with the steam turbine by the first jet chimney, first steam pipe
Road is equipped with third valve.
Preferably, the heat reservoir includes for connecting the 4th pipe between heat supply network water supply line and the heat-storing device
Road, the 4th pipeline are equipped with delivery pump and the 4th valve.
The utility model second aspect provides a kind of heat accumulation heat supply association system, including heat exchangers for district heating and any of the above side
Heat reservoir described in case, the heat exchangers for district heating are equipped with inlet and outlet, and the water inlet is used to be passed through heat supply network return water,
The water outlet is for being discharged heat supply network water supply, and the heat exchangers for district heating with the steam turbine for being connected to extract the steam turbine
Interior steam simultaneously heats the water in the heat exchangers for district heating by the steam.
Preferably, the heat accumulation heat supply association system includes heat supply network water return pipeline and heat supply network water supply line, and the heat supply network returns
Waterpipe is connected with the water inlet, and the heat supply network water supply line is connected with the water outlet, the heat exchangers for district heating with it is described
It is connected between steam turbine by the second jet chimney.
Preferably, the 5th valve and pumps for hot water supply net, the heat supply network water supplying pipe are successively arranged on the heat supply network water return pipeline
Road is equipped with the 6th valve, and second jet chimney is equipped with the 7th valve.
The utility model third aspect provides a kind of Turbo-generator Set heating system, including heat accumulation described in any of the above
Heat supply association system.
Through the above technical solutions, the utility model heat reservoir when unit is in middle high load capacity, can use mostly from
The heat supply network return water in heat reservoir is heated in steam extraction in steam turbine；When unit Ultra-low load operation, the water of heat-storing device
It is all or part of to thereby realize unit Ultra-low load operation to heat supply network heat supply, thermal power plant is improved in the super of heat supply period
Underload peak regulation and heat capacity are made that contribution for power grid frequency modulation, while also ensuring the economy of unit.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the heat accumulation heat supply association system of embodiment of the utility model.
Description of symbols
1-heating apparatus with function of heat storage, 2-heat-storing devices, 3-heat supply network water return pipelines, 4-first pipes, the 5-the first valve, 6-
Water storage box, 7-second pipes, 8-heat accumulation circulating pumps, 9-third pipelines, the 10-the second valve, the 11-the first jet chimney,
12-third valves, 13-heat supply network water supply lines, the 14-the four pipeline, 15-delivery pumps, the 16-the four valve, 17-heat supply networks add
Hot device, the 18-the second jet chimney, the 19-the five valve, 20-pumps for hot water supply net, the 21-the six valve, the 22-the seven valve.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
In conjunction with Fig. 1, one aspect according to the present utility model provides a kind of heat reservoir, including for heat supply network return water
The heating apparatus with function of heat storage 1 that is heated and it is connected with the heating apparatus with function of heat storage 1 for storing the water after heating and supplying water to heat supply network
Heat-storing device 2, the heating apparatus with function of heat storage 1 extracts in the steam turbine steam for being connected with steam turbine and by the steaming
Vapour heats the water in the heating apparatus with function of heat storage 1.
Through the above technical solutions, the heat reservoir of the utility model is when unit is in middle high load capacity, it can be by more
The heat supply network return water in heat reservoir is heated from steam extraction in steam turbine and is stored in the heat-storing device to realize heat accumulation；
When unit Ultra-low load operation, the air demand of the high, medium and low cylinder pressure of unit need to be reduced, thus will lead in steam turbine for adding
The steam extraction amount of heat is insufficient, at this time can be all or part of to heat supply network complementary heating by the water in heat-storing device, ensures that in this way
Even if being still able to satisfy heat demand when unit Ultra-low load operation, thermal power plant is improved in the ultra-low load peak regulation of heat supply period
With heat capacity, contribution is made that for power grid frequency modulation, while also ensuring the economy of unit.
In simple terms, when the quantity of heat production of unit is higher than heat supply network institute calorific requirement, can will be more than needed by heat-storing device heat
It stores, and when the quantity of heat production of unit is lower than heat supply network institute calorific requirement, heat can be discharged by heat-storing device with complementary heating
Deficiency meets the requirement of power plant's ultra-low load frequency modulation.
Wherein, for convenience of heat supply network return water is heated, the heat reservoir include for connect heat supply network water return pipeline 3 with
The first pipe 4 of the heating apparatus with function of heat storage 1, the first pipe 4 are equipped with the first valve 5.When opening first valve 5
When, heat supply network return water will pass through the first pipe 4 and be heated into the heating apparatus with function of heat storage 1, in heating process, the heat accumulation
The pipeline for the heat supply network return water that circulates is equipped with inside heater 1, pipeline external is filled with the steam extracted from the steam turbine,
To realize the heating to heat supply network return water in the pipeline, the water after heating will enter the heat-storing device 2 and store.
When heat supply network water return amount is excessive, that is, when being unable to reach water balance in system, if opening first valve at this time
Door 5, a large amount of heat supply network return water will be unable to guarantee heating effect after entering the heating apparatus with function of heat storage 1, in this regard, examining in present embodiment
Worry adds the water storage box 6 for storing the heat supply network return water to solve the above problems, and carrys out the water in balance system.The water storage
It is connected between case 6 and the heating apparatus with function of heat storage 1 by second pipe 7, the second pipe 7 is equipped with heat accumulation circulating pump 8.By
This, excessive water will be stored in the water storage box 6, then constantly will be in the water storage box 6 by the heat accumulation circulating pump 8
Water is drawn into the heating apparatus with function of heat storage 1 and is heated, and guarantees the water balance in heating effect and realization system.
Further, the heat reservoir includes the third pipeline for connecting heat supply network water return pipeline 3 Yu the water storage box 6
9, the third pipeline 9 is equipped with the second valve 10.When hypervolia, second valve 10 is opened in selection, and water is allowed to enter
It is stored in the water storage box 6；When water is normal, first valve 5 is opened in selection, so that heat supply network return water directly passes through
The first pipe 4, which enters in the heating apparatus with function of heat storage 1, to be heated.
By preceding solution it is found that the heating needs of the heating apparatus with function of heat storage 1 extract steam from the steam turbine
And the water in the heating apparatus with function of heat storage 1 is heated by the steam.Therefore, the heating apparatus with function of heat storage 1 and the steamer
It needs to be connected by the first jet chimney 11 between machine, first jet chimney 11 is equipped with third valve 12.Open described
Three valves 12, the steam in the steam turbine will pass through first jet chimney 11 and enters the heating apparatus with function of heat storage 1.
It is understood that the heat reservoir includes for connecting heat supply network water supply line 13 in order to realize that heat supply network supplies water
With the 4th pipeline 14 between the heat-storing device 2, the 4th pipeline 14 is equipped with delivery pump 15 and the 4th valve 16.Work as machine
When group underrun, the delivery pump 15 and the 4th valve 16 can be opened, the water in the heat-storing device 2 will pass through described
Delivery pump 5 and the 4th pipeline 14 are delivered to user, with complementary heating.
The utility model second aspect provides a kind of heat accumulation heat supply association system, including heat exchangers for district heating 17 and any of the above
Heat reservoir described in scheme, the heat exchangers for district heating 17 are equipped with inlet and outlet, and the water inlet is for being passed through heat supply network
Return water, the water outlet is for being discharged heat supply network water supply, and the heat exchangers for district heating 17 is for being connected with the steam turbine to extract
It states steam in steam turbine and the water in the heat exchangers for district heating 17 is heated by the steam.
Wherein, the principle of heating of the heat exchangers for district heating 17 is identical as the principle of the heating apparatus with function of heat storage 1, is to pass through pumping
It takes steam in the steam turbine and water is heated by the steam.
The heat accumulation heat supply association system course of work of the utility model is specifically divided into following three kinds of situations:
When the operation of unit normal duty, without using the heat reservoir, can directly using original heating system into
Row heat supply heats heat supply network return water by the heat exchangers for district heating 17 and carries out heat supply network water supply；
When heavy-duty service in unit, independent heat supply still can be carried out using heating system, it should be noted that at this time
It also needs to carry out heat accumulation by heat reservoir, specifically, a part of steam is extracted from steam turbine into the heat exchangers for district heating
Heat supply network return water in 17 pairs of heating systems is heated and realizes that heat supply network supplies water, and is in addition extracted another part also from steam turbine and is steamed
Vapour, which enters the heating apparatus with function of heat storage 1, heat to the heat supply network return water in heat reservoir and the water after heating is stored in the storage
To realize heat accumulation in thermal 2；
When unit Ultra-low load operation, the air demand of the high, medium and low cylinder pressure of Steam Turbine need to be reduced, thus will lead to original
Steam extraction amount for heating is insufficient in beginning heating system, at this time on the basis of guaranteeing heating system normal heat supply, can will in
Water when high load capacity in stored heat-storing device is all or part of to heat supply network complementary heating, ensures that unit is ultralow negative in this way
Lotus is still able to achieve normal heat supply when running, improve thermal power plant in the ultra-low load peak regulation and heat capacity of heat supply period, for electricity
Net frequency modulation is made that contribution, while also ensuring the economy of unit.
Further, the heat accumulation heat supply association system includes heat supply network water return pipeline 3 and heat supply network water supply line 13, the heat
Net water return pipeline 3 is connected with the water inlet, and the heat supply network water supply line 13 is connected with the water outlet, the heat exchangers for district heating
It is connected between 17 and the steam turbine by the second jet chimney 18.
For the heating and water supply for realizing heat supply network return water, the 5th valve 19 and heat are successively arranged on the heat supply network water return pipeline 3
Net circulating pump 20, the heat supply network water supply line 13 are equipped with the 6th valve 21, and second jet chimney 18 is equipped with the 7th valve
Door 22.
Under normal circumstances, it can be used alone heating system and carry out heat supply.The 5th valve 19 is opened, heat supply network return water is logical
It crosses the heat supply network water return pipeline 3 to circulate, and the heat exchangers for district heating 17 is delivered to by the pumps for hot water supply net 20 and is heated,
It finally opens the 6th valve 21 and is supplied water by the heat supply network water supply line 13 to user.Wherein, in the heat exchangers for district heating
In 17 pairs of heat supply network return water heating processes, the 7th valve 22 is opened, by second jet chimney 18 from the steam turbine
Middle extraction steam.
Certainly, when heat supply steam extraction amount deficiency in heating system, heating system and heat reservoir can be used simultaneously, at this time
The 6th valve 21 and the 4th valve 16, the draining of the heat supply network water supply line 13 and heat accumulation dress will be opened simultaneously
The hot water for setting 2 storages will supply water to user simultaneously, to guarantee water requirements in the insufficient situation of heat supply steam extraction amount.
The utility model third aspect provides a kind of Turbo-generator Set heating system, including heat accumulation described in any of the above
Heat supply association system.
It is worth noting that, the steam come out in steam turbine is mainly used for electrical power generators, and this embodiment party at present
Extraction section steam is for heating heat accumulation from the steam turbine in formula, and thus the utility model will generate electricity and heat supply solves
Coupling can balance generated energy and heating load in unit.
What needs to be explained here is that steam for heating is vented or mesolow from the high pressure cylinder of the steam turbine in heat supply network
Cylinder is obtained into vapour, is supplied by temperature-decreased pressure reducer to heat supply network, is used for the heat exchangers for district heating 17 or the heating apparatus with function of heat storage 1 in this way
Steam may not pass through in the steam turbine pressure and low pressure (LP) cylinder, since steam does not pass through pressure and low pressure (LP) cylinder in steam turbine, cause
The steam turbine acting reduction, correspondingly power generation is just reduced, that is to say, that is used to heat when extracting steam from the steam turbine
When, it will lead to power generation and reduce.Specifically, the steam when generator, which needs, reduces generated output, in steam turbine for power generation
Demand can be reduced, and thus steam is directly extracted without the mesolow cylinder and adds to heat supply network return water in steam turbine
Heat simultaneously realizes heat accumulation；When generator needs to increase generated output, the steam demand amount in steam turbine for power generation can increase, this
When can only extract less or not extract steam-turbine for heating, heat supply network heat supply mainly passes through the heat-storing device 2 and is supplemented.
Through the above technical solutions, the adjusting to generated output in unit operation may be implemented, while the heat reservoir being utilized to carry out
After heat accumulation, electrical power needed for can reduce heat supply period realizes the operation of unit ultra-low load, improves the economic effect of power plant's operation
Benefit.
Further, since being to control generator power according to user power consumption when power peak regulation, pass through in present embodiment
It is provided with heat reservoir, the size of the adjustable steam extraction amount from steam turbine for heat accumulation and then controls power generation in a certain range
Machine output power, which reduces the workloads that the boiler before Turbo-generator Set heating system often adjusts, and also reduce
The abrasion of relevant device, so reduce unit during power peak regulation brought operating condition frequent fluctuation to system equipment
The influence in service life is conducive to the safe operation of unit.
Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail in conjunction with attached drawing above
In this.In the range of the technology design of the utility model, a variety of simple variants can be carried out to the technical solution of the utility model,
It is combined in any suitable manner including each particular technique feature, in order to avoid unnecessary repetition, the utility model
To various combinations of possible ways, no further explanation will be given.But these simple variants and combination equally should be considered as the utility model institute
Disclosure belongs to the protection scope of the utility model.
Claims (10)
1. a kind of heat reservoir, which is characterized in that including for being heated to heat supply network return water heating apparatus with function of heat storage (1) and with
The heating apparatus with function of heat storage (1) is connected for storing the water after heating and to the heat-storing device (2) of heat supply network water supply, and the heat accumulation heats
Device (1) extracts steam in the steam turbine for being connected with steam turbine and passes through the steam to the heating apparatus with function of heat storage (1)
In water heated.
2. heat reservoir according to claim 1, which is characterized in that the heat reservoir includes for connecting heat supply network return water
The first pipe (4) of pipeline (3) and the heating apparatus with function of heat storage (1), the first pipe (4) are equipped with the first valve (5).
3. heat reservoir according to claim 1, which is characterized in that the heat reservoir includes for storing the heat supply network
The water storage box (6) of return water is connected between the water storage box (6) and the heating apparatus with function of heat storage (1) by second pipe (7), described
Second pipe (7) is equipped with heat accumulation circulating pump (8).
4. heat reservoir according to claim 3, which is characterized in that the heat reservoir includes for connecting heat supply network return water
The third pipeline (9) of pipeline (3) and the water storage box (6), the third pipeline (9) are equipped with the second valve (10).
5. heat reservoir according to claim 1, which is characterized in that the heating apparatus with function of heat storage (1) and the steam turbine are logical
It crosses the first jet chimney (11) to be connected, first jet chimney (11) is equipped with third valve (12).
6. heat reservoir according to claim 1, which is characterized in that the heat reservoir includes supplying water for connecting heat supply network
The 4th pipeline (14) between pipeline (13) and the heat-storing device (2), the 4th pipeline (14) are equipped with delivery pump (15)
With the 4th valve (16).
7. a kind of heat accumulation heat supply association system, which is characterized in that including any one in heat exchangers for district heating (17) and claim 1-6
Heat reservoir described in, the heat exchangers for district heating (17) are equipped with inlet and outlet, and the water inlet is for being passed through heat supply network
Return water, the water outlet is for being discharged heat supply network water supply, and the heat exchangers for district heating (17) with the steam turbine for being connected to extract
Steam and the water in the heat exchangers for district heating (17) is heated by the steam in the steam turbine.
8. heat accumulation heat supply association system according to claim 7, which is characterized in that the heat accumulation heat supply association system includes
Heat supply network water return pipeline (3) and heat supply network water supply line (13), the heat supply network water return pipeline (3) are connected with the water inlet, the heat
Net water supply line (13) is connected with the water outlet, passes through the second steam between the heat exchangers for district heating (17) and the steam turbine
Pipeline (18) is connected.
9. heat accumulation heat supply association system according to claim 8, which is characterized in that on the heat supply network water return pipeline (3) according to
Secondary to be equipped with the 5th valve (19) and pumps for hot water supply net (20), the heat supply network water supply line (13) is equipped with the 6th valve (21), institute
The second jet chimney (18) are stated equipped with the 7th valve (22).
10. a kind of Turbo-generator Set heating system, which is characterized in that including storage described in any one of claim 7-9
Hot heat supply association system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821715907.6U CN209484705U (en) | 2018-10-22 | 2018-10-22 | Heat reservoir, heat accumulation heat supply association system and Turbo-generator Set heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821715907.6U CN209484705U (en) | 2018-10-22 | 2018-10-22 | Heat reservoir, heat accumulation heat supply association system and Turbo-generator Set heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209484705U true CN209484705U (en) | 2019-10-11 |
Family
ID=68115043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821715907.6U Active CN209484705U (en) | 2018-10-22 | 2018-10-22 | Heat reservoir, heat accumulation heat supply association system and Turbo-generator Set heating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209484705U (en) |
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2018
- 2018-10-22 CN CN201821715907.6U patent/CN209484705U/en active Active
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