CN203615655U - Energy-saving device applicable to centralized cooling and heating of thermal power plants - Google Patents

Energy-saving device applicable to centralized cooling and heating of thermal power plants Download PDF

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Publication number
CN203615655U
CN203615655U CN201320720681.XU CN201320720681U CN203615655U CN 203615655 U CN203615655 U CN 203615655U CN 201320720681 U CN201320720681 U CN 201320720681U CN 203615655 U CN203615655 U CN 203615655U
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valves
pipeline
cooling
water
water pipeline
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CN201320720681.XU
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朱斌帅
罗城鑫
李国钢
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Huadian Electric Power Research Institute Co Ltd
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Huadian Electric Power Research Institute Co Ltd
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Abstract

The utility model relates to an energy-saving device applicable to the centralized cooling and heating of thermal power plants. In order to sufficiently utilize resources, conventional power plant waste heat utilization heat pump systems need to be optimized. The energy-saving device comprises a steam turbine, a driving steam pipeline, a condenser, a circulating water waste heat utilization pipeline, a circulating water pump, an adsorption type heat pump, a heat supply network water pipeline, a heat supply network circulating pump, a No.3 valve, a No.4 valve, a No.7 valve, a No.8 valve, a No.9 valve, a No.10 valve, a No.1 cooling tower and a circulating water pipeline, wherein the steam turbine is connected with the condenser, the driving steam pipeline is connected onto the steam turbine and the adsorption type heat pump, the circulating water pipeline is connected onto the condenser and the No.1 cooling tower, the circulating water waste heat utilization pipeline is connected with the adsorption type heat pump and the circulating water pipeline, a No.2 cooling tower is connected with a cooling water pipeline, and one end of a chilled water pipeline is located between the No.3 valve and the adsorption type heat pump. The energy-saving device has the dual functions of cooling and heating.

Description

A kind of energy saver that is applicable to steam power plant's central cooling heat supply
Technical field
The utility model relates to a kind of energy saver, especially relate to a kind of energy saver that is applicable to steam power plant's central cooling heat supply, can cooling and warming dual-purpose, can effectively utilize winter the circulating water afterheat of thermal power plant to carry out central heating, can produce cryogenic freezing water summer for cooling, make full use of residual heat of electric power plant, effectively improve utilization rate of equipment and installations.
Background technology
In recent years, along with deepening continuously of energy-saving and emission-reduction work and improving constantly of absorption heat pump equipment manufacturing technology, absorption heat pump has carried out practice and exploring in the application in heat-engine plant circulating water and exhaust steam residual heat recycling field.This technological means can effectively reclaim electric power plant circulating water or exhaust steam residual heat carries out city heat supply at Heating Period, has realized good energy-saving benefit and social benefit.But, because it is only for for thermal property, make system utilize the time to be subject to the restriction in season, only, in Heating Period operation, system is in idle state At All Other Times.For making full use of resource, existing residual heat of electric power plant utilizes heat pump to await further optimization, to improve the availability of its equipment.
Utility model content
The utility model provides a kind of energy saver that is applicable to steam power plant's central cooling heat supply, efficiently solves existing residual heat of electric power plant and utilizes heat pump function singleness, problem that utilization rate is low.By the reasonable Arrangement of Cooling and Heat Source pipeline and valve, realize the switching of heat pump low-temperature receiver and thermal source under different operating modes, the dual-use function that makes the utility model possess refrigeration simultaneously and heat, Heating Period extraction electric power plant circulating water waste heat carries out concentrated supply of heating in the city in the winter time, and carries out central cooling for the production of cryogenic freezing water in the time that have cooling demand summer etc.
The technical scheme in the invention for solving the above technical problem is: the energy saver that this is applicable to steam power plant's central cooling heat supply, comprises steam turbine, drive jet chimney, condenser, circulating water afterheat utilizes pipeline, water circulating pump, absorption heat pump, hot net water pipeline, pumps for hot water supply net, No. three valves, No. four valves, No. seven valves, No. eight valves, No. nine valves, No. ten valves, cooling tower and circulating water pipeline, described steam turbine is connected with condenser, and described driving jet chimney is connected on steam turbine and absorption heat pump, and described circulating water pipeline is connected on condenser and a cooling tower, described water circulating pump, No. nine valves and No. ten valves are installed on circulating water pipeline, described circulating water afterheat utilizes pipeline to be connected on absorption heat pump and circulating water pipeline, described No. three valves and No. four valves are installed in circulating water afterheat and utilize on pipeline, described hot net water pipeline is connected on absorption heat pump, described pumps for hot water supply net, No. seven valves and No. eight valves are installed on hot net water pipeline, described No. seven valves and No. eight valves export and import of close hot net water pipeline respectively, described pumps for hot water supply net is between absorption heat pump and No. seven valves, and its design feature is: also comprise cooling water pipeline, chilled water pump, a valve, No. two valves, No. five valves, No. six valves, No. two cooling towers and chilled water pipeline, the two ends of described cooling water pipeline are all connected on hot net water pipeline, one end of described cooling water pipeline is between pumps for hot water supply net and No. seven valves, the other end of this cooling water pipeline is between No. eight valves and absorption heat pump, described No. two cooling towers are connected on cooling water pipeline, a described valve and No. two valves are installed on cooling water pipeline, the two ends of described chilled water pipeline are all connected to circulating water afterheat and utilize on pipeline, one end of described chilled water pipeline is between No. three valves and absorption heat pump, the other end of this chilled water pipeline between No. four valves and absorption heat pump, described chilled water pump, No. five valves and No. six valves are installed on chilled water pipeline.
As preferably, on absorption heat pump described in the utility model, be provided with evaporimeter, absorber, generator and condenser.
The utility model compared with prior art, has the following advantages and effect: reasonable in design, and scientific arrangement, easy to use, utilization rate of equipment and installations is high, can effectively improve the utilization rate of the energy, is conducive to energy-conserving and environment-protective.The utility model is realized the switching of absorption heat pump low-temperature receiver and thermal source by the switching of pipe valve, the energy of realizing between different working medium shifts.The utility model is in the time heating, the recirculated water of condenser outlet is introduced absorption heat pump as system hypothermia thermal source by pipeline, after absorption heat pump extraction heat, for heating hot net water, the utility model has been realized the transfer of heat from recirculated water to hot net water under this heating condition; The utility model is in when refrigeration, and chilled water backwater enters absorption heat pump lowers the temperature, and unnecessary heat discharges by cooling tower, and the utility model has been realized from chilled water the transfer of heat to atmosphere by cooling tower under this operating mode.
Accompanying drawing explanation
Fig. 1 is the structural representation that is applicable to the energy saver of steam power plant's central cooling heat supply in the utility model embodiment.
Fig. 2 be in the utility model embodiment, be applicable to steam power plant's central cooling heat supply energy saver in the time of heating condition, indicate the structural representation of media flow direction.
Fig. 3 be in the utility model embodiment, be applicable to steam power plant's central cooling heat supply energy saver in the time of cooling condition, indicate the structural representation of media flow direction.
In figure: 1-steam turbine, 2-drives jet chimney, 3-condenser, 4-circulating water afterheat utilizes pipeline, 5-water circulating pump, 6-absorption heat pump, 7-hot net water pipeline, 8-cooling water pipeline, 9-chilled water pump, 10-pumps for hot water supply net, valve of 11-, No. bis-valves of 12-, No. tri-valves of 13-, No. tetra-valves of 14-, No. five valves of 15-, No. six valves of 16-, No. seven valves of 17-, No. eight valves of 18-, No. nine valves of 19-, No. ten valves of 20-, cooling tower of 21-, No. bis-cooling towers of 22-, 23-circulating water pipeline, 24-chilled water pipeline.
The specific embodiment
Below in conjunction with accompanying drawing and by embodiment, the utility model is described in further detail, and following examples are to explanation of the present utility model and the utility model is not limited to following examples.
Embodiment.
Referring to Fig. 1 to Fig. 3, the energy saver that is applicable to steam power plant's central cooling heat supply in the present embodiment comprises steam turbine 1, drive jet chimney 2, condenser 3, circulating water afterheat utilizes pipeline 4, water circulating pump 5, absorption heat pump 6, hot net water pipeline 7, cooling water pipeline 8, chilled water pump 9, pumps for hot water supply net 10, a valve 11, No. two valves 12, No. three valves 13, No. four valves 14, No. five valves 15, No. six valves 16, No. seven valves 17, No. eight valves 18, No. nine valves 19, No. ten valves 20, a cooling tower 21, No. two cooling towers 22, circulating water pipeline 23 and chilled water pipeline 24, wherein, on absorption heat pump 6, be provided with evaporimeter, absorber, generator and condenser.
Steam turbine 1 in the present embodiment is connected with condenser 3, drive jet chimney 2 be connected on steam turbine 1 and absorption heat pump 6, steam turbine 1 can by drive jet chimney 2 by heat delivery in absorption heat pump 6.Circulating water pipeline 23 in the present embodiment is connected on condenser 3 and a cooling tower 21, makes the water in condenser 3 can pass through cooling tower 21 distribute heats.Water circulating pump in the present embodiment 5, No. nine valves 19 and No. ten valves 20 are installed on circulating water pipeline 23, wherein, No. nine valves 19 and No. ten valves 20 lay respectively at the both sides of a cooling tower 21, and water circulating pump 5 is between condenser 3 and No. nine valves 19.
Circulating water afterheat in the present embodiment utilizes pipeline 4 to be connected on absorption heat pump 6 and circulating water pipeline 23, No. three valves 13 and No. four valves 14 are installed in circulating water afterheat and utilize on pipeline 4, make the water in condenser 3 to utilize pipeline 4 to be transported in absorption heat pump 6 by circulating water afterheat, absorption heat pump 6 can extract the waste heat of recirculated water in circulating water pipeline 23.
Hot net water pipeline 7 in the present embodiment is connected on absorption heat pump 6, pumps for hot water supply net 10, No. seven valves 17 and No. eight valves 18 are installed on hot net water pipeline 7, No. seven valves 17 and No. eight valves 18 are respectively near the export and import of hot net water pipeline 7, and pumps for hot water supply net 10 is between absorption heat pump 6 and No. seven valves 17.
In the present embodiment, the two ends of cooling water pipeline 8 are all connected on hot net water pipeline 7, one end of cooling water pipeline 8 is between pumps for hot water supply net 10 and No. seven valves 17, the other end of this cooling water pipeline 8 is between No. eight valves 18 and absorption heat pump 6, No. two cooling tower 22 is connected on cooling water pipeline 8, a valve 11 and No. two valves 12 are installed on cooling water pipeline 8, make heat in absorption heat pump 6 to be transported to No. two cooling towers 22 by cooling water pipeline 8 and distribute.
The two ends of the chilled water pipeline 24 in the present embodiment are all connected to circulating water afterheat and utilize on pipeline 4, wherein, one end of chilled water pipeline 24 is between No. three valves 13 and absorption heat pump 6, the other end of this chilled water pipeline 24 is between No. four valves 14 and absorption heat pump 6, and chilled water pump 9, No. five valves 15 and No. six valves 16 are installed on chilled water pipeline 24.
In the present embodiment, be applicable to the energy saver of steam power plant's central cooling heat supply by the reasonable Arrangement of Cooling and Heat Source pipeline and valve, can realize the switching of heat pump low-temperature receiver and thermal source under different operating modes, the dual-use function that makes this energy saver possess refrigeration simultaneously and heat, Heating Period extraction electric power plant circulating water waste heat carries out concentrated supply of heating in the city in the winter time, in the time that have cooling demand summer etc., carries out central cooling for the production of cryogenic freezing water.
As shown in Figure 2, for being applicable to indicate under the central heating operating mode of energy saver of steam power plant's central cooling heat supply the structural representation of media flow direction in the present embodiment, under the central heating operating mode of the energy saver in the present embodiment, the state of each valve respectively: No. seven valves 17 and No. eight valves 18 are held open; Valve 11, No. two valves 12, No. five valves 15 and No. six valves 16 keep closing; No. three valves 13, No. four valves 14, No. nine valves 19 and No. ten valves 20 are adjustable valve, and the traffic demand that can reclaim recirculated water according to absorption heat pump 6 regulates the assignment of traffic of recirculated water between absorption heat pump 6 and a cooling tower 21.
The energy saver that is applicable to steam power plant's central cooling heat supply in the present embodiment is as follows for the workflow of central heating: take absorption heat pump 6 as exchange heat center, steam turbine 1 draws gas by driving steam pipework 2 to enter absorption heat pump 6 as its driving heat source.The recirculated water that has absorbed steam turbine 1 exhaust steam heat utilizes pipeline 4 to be sent to absorption heat pump 6 as the low-temperature heat source being recovered by circulating water afterheat.Absorption heat pump 6 is used for heating hot net water by the heat of extraction, and flows to hot user by hot net water pipeline 7, has realized extraction and the use of recirculated water low temperature exhaust heat.When higher to supplying hot water temperature requirement, can utilize peak load calorifier further to heat.
As shown in Figure 3, for being applicable to indicate under the central cooling operating mode of energy saver of steam power plant's central cooling heat supply the structural representation of media flow direction in the present embodiment, under the central cooling operating mode of the energy saver in the present embodiment, the state of each valve respectively: valve 11, No. two valves 12, No. five valves 15 and No. six valves 16 are held open; No. three valves 13, No. four valves 14, No. seven valves 17 and No. eight valves 18 keep closing; No. nine valves 19 and No. ten valves 20 are adjustable valve, can enter according to unit working condition controlled circulation water the quantity of circulating water of a cooling tower 21.
The energy saver that is applicable to steam power plant's central cooling heat supply in the present embodiment is as follows for the workflow of central cooling: take absorption heat pump 6 as exchange heat center, steam turbine 1 draws gas by driving jet chimney 2 to enter absorption heat pump 6 as its driving heat source.Chilled water backwater enters absorption heat pump 6 by chilled water pipeline 24 and lowers the temperature, absorption heat pump 6 by the transfer of heat absorbing in chilled water backwater to cooling water, enter No. two cooling towers 22 by cooling water pipeline 8 again heat is passed to atmosphere, final realization continues chilled water transfer of heat, to atmosphere, externally to continue to provide cryogenic freezing water by chilled water pipeline 24.
Absorption heat pump 6 in the present embodiment is static equipments, and daily power consumption is low, and operation maintenance is simple, environmentally safe, and noise is little, and operating cost is lower.No. two cooling towers 22 are for the cooling recirculated cooling water at cooling water pipeline 8, and it can be arranged nearby, to reduce the wasted work of pumps for hot water supply net 10.When the capacity of a cooling tower 21 in thermal power plant has time more than needed, absorption heat pump 6 No. two required cooling towers 22 under cooling condition can save, cooling water is incorporated to the circulating water line of a cooling tower 21, to reduce initial cost and operating cost, this can be according to actual conditions choose reasonable.Water circulating pump 5, chilled water pump 9 and pumps for hot water supply net 10 in the present embodiment is all that its layout can be optimized layout according to field condition for circulating line separately provides circulation power, to reduce the wasted work of water pump.The energy saver that is applicable to steam power plant's central cooling heat supply in the present embodiment can comprise the relevant auxiliaries such as monitoring system and switch, valve, for monitoring and the control of system real time execution situation, possess and steam turbine 1 control system information exchange functions, can realize the needs of Long-distance Control, and guarantee the safe operation of generating set.
In addition, it should be noted that, the specific embodiment described in this description, shape, institute's title of being named etc. of its parts and components can be different, and the above content described in this description is only to the explanation of the utility model structure example.All equivalence variation or simple change of doing according to described structure, feature and the principle of the utility model patent design, are included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, all should belong to protection domain of the present utility model.

Claims (2)

1. an energy saver that is applicable to steam power plant's central cooling heat supply, comprises steam turbine, drive jet chimney, condenser, circulating water afterheat utilizes pipeline, water circulating pump, absorption heat pump, hot net water pipeline, pumps for hot water supply net, No. three valves, No. four valves, No. seven valves, No. eight valves, No. nine valves, No. ten valves, cooling tower and circulating water pipeline, described steam turbine is connected with condenser, and described driving jet chimney is connected on steam turbine and absorption heat pump, and described circulating water pipeline is connected on condenser and a cooling tower, described water circulating pump, No. nine valves and No. ten valves are installed on circulating water pipeline, described circulating water afterheat utilizes pipeline to be connected on absorption heat pump and circulating water pipeline, described No. three valves and No. four valves are installed in circulating water afterheat and utilize on pipeline, described hot net water pipeline is connected on absorption heat pump, described pumps for hot water supply net, No. seven valves and No. eight valves are installed on hot net water pipeline, described No. seven valves and No. eight valves export and import of close hot net water pipeline respectively, described pumps for hot water supply net, between absorption heat pump and No. seven valves, is characterized in that: also comprise cooling water pipeline, chilled water pump, a valve, No. two valves, No. five valves, No. six valves, No. two cooling towers and chilled water pipeline, the two ends of described cooling water pipeline are all connected on hot net water pipeline, one end of described cooling water pipeline is between pumps for hot water supply net and No. seven valves, the other end of this cooling water pipeline is between No. eight valves and absorption heat pump, described No. two cooling towers are connected on cooling water pipeline, a described valve and No. two valves are installed on cooling water pipeline, the two ends of described chilled water pipeline are all connected to circulating water afterheat and utilize on pipeline, one end of described chilled water pipeline is between No. three valves and absorption heat pump, the other end of this chilled water pipeline between No. four valves and absorption heat pump, described chilled water pump, No. five valves and No. six valves are installed on chilled water pipeline.
2. the energy saver that is applicable to steam power plant's central cooling heat supply according to claim 1, is characterized in that: on described absorption heat pump, be provided with evaporimeter, absorber, generator and condenser.
CN201320720681.XU 2013-11-15 2013-11-15 Energy-saving device applicable to centralized cooling and heating of thermal power plants Active CN203615655U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105841213A (en) * 2016-04-26 2016-08-10 南京遒涯信息技术有限公司 High-backpressure heat supply high-adaptability control mechanism and method of indirect air cooling unit
CN106948887A (en) * 2017-05-18 2017-07-14 上海电力设计院有限公司 Power plant's Special circulation cooling water system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105841213A (en) * 2016-04-26 2016-08-10 南京遒涯信息技术有限公司 High-backpressure heat supply high-adaptability control mechanism and method of indirect air cooling unit
CN106948887A (en) * 2017-05-18 2017-07-14 上海电力设计院有限公司 Power plant's Special circulation cooling water system

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