CN203656898U - Waste heat utilization system for periodic blowdown flash tank of thermal power plant - Google Patents
Waste heat utilization system for periodic blowdown flash tank of thermal power plant Download PDFInfo
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- CN203656898U CN203656898U CN201320708865.4U CN201320708865U CN203656898U CN 203656898 U CN203656898 U CN 203656898U CN 201320708865 U CN201320708865 U CN 201320708865U CN 203656898 U CN203656898 U CN 203656898U
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- 239000002918 waste heat Substances 0.000 title claims abstract description 26
- 230000000737 periodic effect Effects 0.000 title abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 100
- 238000005338 heat storage Methods 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 239000011232 storage material Substances 0.000 claims abstract description 11
- 238000011084 recovery Methods 0.000 claims abstract description 10
- 239000008400 supply water Substances 0.000 claims abstract description 8
- 230000001172 regenerating effect Effects 0.000 claims description 38
- 238000010438 heat treatment Methods 0.000 claims description 35
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 8
- 238000012806 monitoring device Methods 0.000 claims description 7
- 150000002910 rare earth metals Chemical class 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 abstract 2
- 238000004146 energy storage Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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Abstract
The utility model discloses a waste heat utilization system for a periodic blowdown flash tank of a thermal power plant. The system comprises a periodic blowdown flash tank which is communicated with a hybrid cooling tank through a discharging pipe; waste heat output pipes arranged on the discharging pipe are respectively connected with a heat source inlet II of a heat storage heat exchanger and a heat source inlet I of a heat supply heat exchanger; the heat source inlet II of the heat storage heat exchanger and the heat source inlet I of the heat supply heat exchanger are respectively communicated with the hybrid cooling tank through waste heat recovery pipes; the cold water inlet II of the heat storage heat exchanger is communicated with a cold water conveying pipe; the hot water outlet II of the heat storage heat exchanger is connected with a hot water output end; a phase-change heat storage material is arranged at the upper part of the heat storage heat exchanger; the cold water inlet I of the heat supply heat exchanger is communicated with a heat supply water return pipe of the power plant; the hot water outlet I of the heat supply heat exchanger is communicated with a heat supply water supply pipeline of the power plant. The system is used for recovering the waste heat of the hot water in the periodic blowdown flash tank of the thermal power plant; the energy is saved and the emission is reduced; moreover, the system has heat storage capacity, and can be used conveniently at any time.
Description
Technical field
The utility model relates to UTILIZATION OF VESIDUAL HEAT IN technical field, particularly a kind of regular unloading container bootstrap system.
Background technology
In the boiler regular unloading container running of thermoelectric generator factory, to subcritical and following parameter thermal power generation unit, the hot water source of regular unloading container mainly comprises that boiler-steam dome and superheater, reheater, the hydrophobic of economizer discharge water, and also comprises that boiler lower header discharges water and drum promptly discharges water.Enter into hot water temperature in regular unloading container very high, greatly about 200 ~ 250 DEG C, if by these hot water directly discharge not only easily scorch drainage pipeline, produce thermal pollution, and wasted resource.The more regular unloading container design of domestic application is that this part hot water is entered to hybrid cooling pond at present, with in factory, serve water (cold water) and be mixed to not higher than after the water temperature of 40 DEG C, directly discharge factory building from drainage pipeline, avoided infringement and the thermal pollution of hot water to drainage pipeline although do like this, the heat energy of these hot water has still been wasted.
Utility model content
The utility model technical issues that need to address are to provide a kind of thermal power plant regular unloading container bootstrap system, not only can recycle the waste heat that enters hot water in regular unloading container, energy-saving and emission-reduction, and possess heat energy storage capacity, be convenient to use at any time.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of thermal power plant regular unloading container bootstrap system, comprise the regular unloading container being communicated with hybrid cooling pond by discharge pipe, waste heat efferent duct is set on described discharge pipe, described waste heat efferent duct arranges two branch roads, the wherein thermal source entrance II of a branch road connection regenerative heat exchanger, another branch road connects the thermal source entrance I of heating heat exchanger, the thermal source outlet II of described regenerative heat exchanger is communicated to hybrid cooling pond by waste heat recovery pipe respectively with the thermal source outlet I of heating heat exchanger
The cold water inlet II of described regenerative heat exchanger is communicated with the cold water water-supply-pipe of power plant, and the hot water outlet II of regenerative heat exchanger connects output end of hot water, and the top in regenerative heat exchanger is provided with phase change heat storage material,
The cold water inlet I of described heating heat exchanger and power plant are communicated with for hot water return line, and the hot water outlet I of the heat exchanger that heats is communicated with power plant heat supply water supply line.
Further improvement of the utility model is: the output end of hot water of regenerative heat exchanger connects respectively hot water pipe and mobile heat supply car.
Further improvement of the utility model is: the described pipeline being connected with thermal source entrance II, thermal source outlet II, cold water inlet II, the output end of hot water of regenerative heat exchanger, the pipeline being connected with thermal source entrance I, thermal source outlet I, cold water inlet I, the hot water outlet I of heating heat exchanger, and control valve is all set on discharge pipe.
Further improvement of the utility model is: set temperature sensing device on described regenerative heat exchanger, the control valve on the pipeline that described temperature sensing device is connected with cold water water-supply-pipe and with output end of hot water is connected.
Further improvement of the utility model is: the heat-storing material of described regenerative heat exchanger inside is rare-earth phase change heat storage material.
Further improvement of the utility model is: also comprise exchange heat system, described exchange heat system is made up of equipment room and operation room, described heating heat exchanger is arranged in equipment room, the device for detecting temperature and the flow monitoring device that are connected with heating heat exchanger are also set in equipment room, controller with display screen is set in described operation room, and described controller connects the control valve on device for detecting temperature and flow monitoring device and each pipeline.
Owing to having adopted technique scheme, the technological progress that the utility model is obtained is:
The thermal power plant regular unloading container bootstrap system that the utility model provides, not only can recycle the waste heat that enters hot water in regular unloading container, and possess heat energy storage capacity, is convenient to use at any time energy-saving and emission-reduction.Heating period, the waste heat of recovery can be used for external heat supply, non-heating period, and heat stores by the heat-storing material in regenerative heat exchanger, convenient application at any time.
The output end of hot water of regenerative heat exchanger connects respectively hot water pipe and mobile heat supply car, both can, by mobile heat supply car, provide hot water to user, can meet again other heat demand.
The control valve arranging can be opened according to demand or close, and makes the utility model can meet the heat demand of different times.In heating period, open the pipeline that connects heating heat exchanger, the waste heat of recovery is for heating, in non-heating period, open the pipeline that connects regenerative heat exchanger, meet heat energy storage, hot water and other heat demand are provided, the utilization that the waste heat that guarantee is reclaimed can be effective and reasonable.
The control valve being connected with the temperature sensing device on regenerative heat exchanger, opens or closes according to the temperature of hot water in regenerative heat exchanger, can provide temperature required hot water to mobile heat supply car or hot water pipe, the convenient heat energy that utilizes.
Rare-earth phase change heat storage material is a kind of high-performance heat-storing material, and heat storage capacity is about as much as 4 times of consubstantiality ponding, and material is pollution-free, cost is low to use this kind.
The design of the exchange heat system being made up of operation room and equipment room is a kind of integrated form, modularization, standardized designs, can save space, does not need additionally to construct the factory buildings; Flow and the temperature of hot water in heating heat exchanger can be effectively monitored by controller in the design of exchange heat system, thereby rationally control the opening and closing of control valve, and the aperture of adjusting control valve, controls heat exchange amount, meets heating requirement; Controller also connects the control valve on each pipeline, can control easily the opening and closing of all control valves of whole thermal power plant regular unloading container bootstrap system, and guarantee system is normally moved.
Brief description of the drawings
Fig. 1 is principle schematic of the present utility model;
Fig. 2 is the structural representation of exchange heat system in the utility model;
Fig. 3 is the structural representation of regenerative heat exchanger in the utility model.
Reference numeral is as follows: 1-regular unloading container, 2-hybrid cooling pond, 3-exchange heat system, 4-power plant is for hot water return line, 5-power plant heat supply water supply line, 6-regenerative heat exchanger, 7-moves heat supply car, 8-control valve, 9-temperature sensing device, 10-waste heat efferent duct, 11-waste heat recovery pipe, 12-discharge pipe, 13-water-supply-pipe, 14-drainpipe, 15-cold water water-supply-pipe, 16-output end of hot water, the 3a-heat exchanger that heats, 3b-thermal source entrance I, 3c-thermal source outlet I, 3d-cold water inlet I, 3e-hot water outlet I, 3f-flow monitoring device, 3g-device for detecting temperature, 3h-controller, 3i-equipment room, 3j-operation room, 6a-rare-earth phase change heat storage material, 6b-screw pipe, 6c-cold water inlet II, 6d-hot water outlet II, 6e-thermal source entrance II, 6f-thermal source outlet II.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further details.
As shown in Figure 1, Figure 2 and Figure 3, a kind of thermal power plant regular unloading container bootstrap system, comprises that regular unloading container 1, hybrid cooling pond 2, exchange heat system 3, power plant are for hot water return line 4, power plant's heat supply water supply line 5, regenerative heat exchanger 6 and mobile heat supply car 7.Described regular unloading container 1 is communicated with the device that produces blowdown hot water in thermal power plant, and regular unloading container 1 is communicated with hybrid cooling pond 2 by the discharge pipe 12 that is provided with control valve 8.Waste heat efferent duct 10 is set on discharge pipe 12, two branch roads are set on described waste heat efferent duct 10, article two, on branch road, be equipped with control valve 8, the wherein thermal source entrance II of a branch road connection regenerative heat exchanger 6, another branch road connects the thermal source entrance I of the heating heat exchanger 3a in exchange heat system 3.The thermal source outlet I of heating heat exchanger 3a in thermal source outlet II and the exchange heat system 3 of described regenerative heat exchanger 6 arrives waste heat recovery pipe 11 by two pipeline connections that are provided with control valve 8 respectively, the end of waste heat recovery pipe 11 is communicated with hybrid cooling pond 2, and hybrid cooling pond 2 is communicated with outside sewer pipeline.
As shown in Figure 2, described exchange heat system 3 is made up of equipment room 3i and operation room 3j.Described heating heat exchanger 3a is arranged in equipment room 3i, on heating heat exchanger 3a, cold water inlet I and hot water outlet I are set, cold water inlet I is communicated with for hot water return line 4 with described power plant by water-supply-pipe 13, and hot water outlet I is communicated with described power plant heat supply water supply line 5 by drainpipe 14.The device for detecting temperature 3g and the flow monitoring device 3f that are connected with heating heat exchanger 3a are also set in equipment room 3i.Controller 3h with display screen is set in described operation room 3j, and described controller 3h connects control valve 8, device for detecting temperature 3g and the flow monitoring device 3f on water-supply-pipe 13 and drainpipe 14.In addition, the control valve 8 on all pipelines of the utility model is all connected with controller 3h.Heating period, supply hot water return line 4 50 DEG C, mono-tunnel of Shang Jie water at low temperature from power plant, deliver to heating heat exchanger 3a by water-supply-pipe 13, hot water in regular unloading container 1 is delivered to heating heat exchanger 3a by waste heat efferent duct 10, this part hot water carries out after heat exchange cooling with the cold water in heating heat exchanger 3a, enter hybrid cooling pond 2 by waste heat recovery pipe 11 again, when the hot water after heat exchange in heating heat exchanger 3a reaches after 85 DEG C, flow into the main pipeline of power plant's heat supply water supply line 5 by drainpipe 14, for heating.
As shown in Figure 3, regenerative heat exchanger 6 inside are provided with screw pipe 6b, and one end of screw pipe 6b connects the thermal source entrance II of regenerative heat exchanger 6, and the other end of screw pipe 6b connects the thermal source outlet II of regenerative heat exchanger 6.Regenerative heat exchanger 6 bottoms are provided with cold water inlet II, and cold water inlet II is communicated with the cold water water-supply-pipe 15 of power plant.Regenerative heat exchanger 6 tops are provided with hot water outlet II, and hot water outlet II connects output end of hot water 16, and output end of hot water 16 separates two pipelines, and a road connects hot water pipe, and a road connects mobile heat supply car 7.On regenerative heat exchanger 6, be provided with temperature sensing device 9, two pipelines that output end of hot water 16 separates with on cold water water-supply-pipe 15, be all provided with the control valve 8 being connected with temperature sensing device 9.Screw pipe 6b top is provided with rare-earth phase change heat storage material 6a.Non-heating period, hot water in regular unloading container 1 is delivered to by waste heat efferent duct 10 in the screw pipe 6b of regenerative heat exchanger 6 interior bottoms, cold water in hot water and regenerative heat exchanger 6 in screw pipe 6b carries out exchange heat, and the hot water after cooling enters hybrid cooling pond 2 by waste heat recovery pipe 11 again; Water after the interior heating of regenerative heat exchanger 6 is the rare-earth phase change heat storage material 6a to regenerative heat exchanger 6 internal upper parts by thermal energy transfer again, and rare-earth phase change heat storage material 6a absorbs heat energy from the solid-state liquid state that becomes, and heat energy is stored; In the time of needs heat application, in regenerative heat exchanger 6, pass into cold water by cold water water-supply- pipe 15,6a carries out exchange heat with rare-earth phase change heat storage material, hot water after heating is discharged from hot water outlet II, be convenient to use at any time, output end of hot water 16 is also communicated with mobile heat supply car 7, can provide hot water to user at any time by mobile heat supply car 7.
Claims (6)
1. a thermal power plant regular unloading container bootstrap system, it is characterized in that: comprise the regular unloading container (1) being communicated with hybrid cooling pond (2) by discharge pipe (12), waste heat efferent duct (10) is set on described discharge pipe (12), described waste heat efferent duct (10) arranges two branch roads, the wherein thermal source entrance II (6e) of a branch road connection regenerative heat exchanger (6), another branch road connects the thermal source entrance I (3b) of heating heat exchanger (3a), the thermal source outlet II (6f) of described regenerative heat exchanger (6) is communicated to hybrid cooling pond (2) by waste heat recovery pipe (11) respectively with the thermal source outlet I (3c) of heating heat exchanger (3a), the cold water inlet II (6c) of described regenerative heat exchanger (6) is communicated with the cold water water-supply-pipe (15) of power plant, the hot water outlet II (6d) of regenerative heat exchanger (6) connects output end of hot water (16), top in regenerative heat exchanger (6) is provided with phase change heat storage material, the cold water inlet I (3d) of described heating heat exchanger (3a) is communicated with for hot water return line (4) with power plant, the hot water outlet I (3e) of heating heat exchanger (3a) is communicated with power plant's heat supply water supply line (5).
2. thermal power plant according to claim 1 regular unloading container bootstrap system, is characterized in that: the output end of hot water (16) of regenerative heat exchanger (6) connects respectively hot water pipe and mobile heat supply car (7).
3. thermal power plant according to claim 2 regular unloading container bootstrap system, it is characterized in that: the described pipeline being connected with thermal source entrance II (6e), thermal source outlet II (6f), cold water inlet II (6c), the output end of hot water (16) of regenerative heat exchanger (6), the pipeline being connected with thermal source entrance I (3b), thermal source outlet I (3c), cold water inlet I (3d), the hot water outlet I (3e) of heating heat exchanger, and control valve (8) is all set on discharge pipe (12).
4. thermal power plant according to claim 3 regular unloading container bootstrap system, it is characterized in that: the upper set temperature sensing device (9) of described regenerative heat exchanger (6), the control valve (8) on the pipeline that described temperature sensing device (9) is connected with cold water water-supply-pipe (15) and with output end of hot water (16) is connected.
5. thermal power plant according to claim 1 regular unloading container bootstrap system, is characterized in that: the described inner heat-storing material of regenerative heat exchanger (6) is rare-earth phase change heat storage material (6a).
6. thermal power plant according to claim 3 regular unloading container bootstrap system, it is characterized in that: also comprise exchange heat system (3), described exchange heat system (3) is made up of equipment room (3i) and operation room (3j), described heating heat exchanger (3a) is arranged in equipment room (3i), the device for detecting temperature (3g) and the flow monitoring device (3f) that are connected with heating heat exchanger (3a) are also set in equipment room (3i), controller (3h) with display screen is set in described operation room (3j), described controller (3h) connects the control valve (8) on device for detecting temperature (3g) and flow monitoring device (3f) and each pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320708865.4U CN203656898U (en) | 2013-11-12 | 2013-11-12 | Waste heat utilization system for periodic blowdown flash tank of thermal power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320708865.4U CN203656898U (en) | 2013-11-12 | 2013-11-12 | Waste heat utilization system for periodic blowdown flash tank of thermal power plant |
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| Publication Number | Publication Date |
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| CN203656898U true CN203656898U (en) | 2014-06-18 |
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| CN201320708865.4U Expired - Lifetime CN203656898U (en) | 2013-11-12 | 2013-11-12 | Waste heat utilization system for periodic blowdown flash tank of thermal power plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033880A (en) * | 2014-06-30 | 2014-09-10 | 河南中烟工业有限责任公司 | Boiler blow-down water heat energy utilization system |
-
2013
- 2013-11-12 CN CN201320708865.4U patent/CN203656898U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033880A (en) * | 2014-06-30 | 2014-09-10 | 河南中烟工业有限责任公司 | Boiler blow-down water heat energy utilization system |
| CN104033880B (en) * | 2014-06-30 | 2016-01-20 | 河南中烟工业有限责任公司 | Boiler blowdown water heat energy utilization system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 050031 No. 6 Jianbei Street, Chang'an District, Shijiazhuang City, Hebei Province Patentee after: POWERCHINA HEBEI ELECTRIC POWER ENGINEERING Co.,Ltd. Address before: 050031 No. 6 Jianbei Street, Chang'an District, Shijiazhuang City, Hebei Province Patentee before: HEBEI ELECTRIC POWER DESIGN & Research Institute |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |