CN203099961U - Circulating water heat-supply system of thermal power plant - Google Patents
Circulating water heat-supply system of thermal power plant Download PDFInfo
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- CN203099961U CN203099961U CN 201320101237 CN201320101237U CN203099961U CN 203099961 U CN203099961 U CN 203099961U CN 201320101237 CN201320101237 CN 201320101237 CN 201320101237 U CN201320101237 U CN 201320101237U CN 203099961 U CN203099961 U CN 203099961U
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Abstract
The utility model discloses a circulating water heat-supply system of a thermal power plant. The circulating water heat-supply system comprises a heat supply network, a main water supply pipe (11), a main water returning pipe (12) and a plurality of heating users (5), wherein the main water supply pipe (11), the main water returning pipe (12) and the plurality of heating users (5) are respectively connected with the heat supply network. Each heating user is connected to the main water supply pipe through heating water supply branch pipes (13) and connected to the main water returning pipe through heating water returning branch pipes (14), and flow control valves (30) for adjusting heating temperature at the positions of the heating users are arranged on the heating water returning branch pipes. Steam (dead steam) discharged by a steam turbine is utilized to produce circulating hot water in the heat supply network, the hot water for heating is directly supplied by the heat supply network for the heating users, and the energy utilization rate of the thermal power plant is effectively improved. In addition, the circulating water heat-supply system further comprises a hot water supply network connected with the heat supply network and a refrigeration network, so that heating, hot water supply and refrigeration are integrated, maximized energy utilization of the thermal power plant is achieved, and the purposes of saving energy and reducing emission are achieved.
Description
Technical field
The utility model relates to field of energy utilization, particularly, relates to a kind of circulating-water in thermal power plant heating system.
Background technology
In the existing city heat supply net, steam power plant's (or heating plant) supplies to each user sub-district with 110～130 ℃ high-temperature-hot-water, each user sub-district water to water heater of the heat exchange station by the locality again utilizes above-mentioned high-temperature-hot-water that the water of the heating system of user sub-district is heated to 70～80 ℃, carries out heating for the user.This heating process relative complex, and cold water is heated to the low relatively hot water of temperature by high-temperature water, certainly will cause the loss of heat in the transfer process, can not reach the purpose of energy-saving and emission-reduction, also increased the cost of equipment simultaneously.
In addition, the low-temperature water heating of steam power plant, hot vapour etc. directly emit, and do not carry out recyclingly well, have caused the significant wastage of the energy equally.
The utility model content
The purpose of this utility model provides a kind of circulating-water in thermal power plant heating system, and this circulating-water in thermal power plant heating system can improve the efficiency of energy utilization of steam power plant effectively.
To achieve these goals, the utility model provides a kind of circulating-water in thermal power plant heating system, this circulating-water in thermal power plant heating system comprises heating network, the water supply main line that is connected with this heating network respectively and backwater main line and a plurality of heating user, wherein, each described heating user is connected in described water supply main line by heating water supply branch road, and be connected in described backwater main line by heating backwater branch road, described heating backwater branch road is provided with flow control valve, to regulate the heating temperature at described heating user place.
Particularly, the circulating water temperature in the described water supply main line is 70～80 ℃, and the circulating water temperature in the described backwater main line is 50～55 ℃.
Preferably, a plurality of described heating users comprise low layer heating user and high-rise heating user, and are serially connected with booster on the heating water supply branch road that described high-rise heating user is connected.
In embodiment of the present utility model, described circulating-water in thermal power plant heating system comprises the first heat supply water branch road, the first backheat water branch road and is used to heat the water to water heater of cold water, the described first heat supply water branch road is connected between the feed water inlet of described water supply main line and described water to water heater, and the described first backheat water branch road is connected between the water return outlet and described backwater main line of described water to water heater.
Further, described circulating-water in thermal power plant heating system comprises cold water storage cistern and boiler, described cold water storage cistern is connected in the cold water water inlet of described water to water heater by the cold water pipeline, and described boiler is connected in the hot water outlet of described water to water heater by the hot water line.
Preferably, be serially connected with supply-water pump on the described cold water pipeline.
Further, described circulating-water in thermal power plant heating system comprises the hot water user, and the hot water of described boiler is supplied to described hot water user by the hot water feeding pipe road, and described hot water user's backwater flows back to described boiler by hot water backwater's pipeline.
Preferably, be serially connected with heat-exchanger pump on the described hot water feeding pipe road.
In embodiment of the present utility model, described circulating-water in thermal power plant heating system also comprises the second heat supply water branch road, the second backheat water branch road and the refrigeration machine that is used to freeze, the described second heat supply water branch road is connected between the feed water inlet of described water supply main line and described refrigeration machine, and the described second backheat water branch road is connected between the water return outlet and described backwater main line of described refrigeration machine.
Further, described circulating-water in thermal power plant heating system comprises air conditioner user, and the backwater of this air conditioner user flows to described refrigeration machine by the refrigeration supply channel, and the chilled water after described refrigeration machine refrigeration is supplied to described air conditioner user by cooling water pipeline.
Preferably, be serially connected with water supply pump on the described refrigeration supply channel.
Preferably, described circulating-water in thermal power plant heating system also comprises the storage tank that is used for moisturizing, and this storage tank is other to be connected between described air conditioner user and the described water supply pump.
Preferably, described refrigeration machine is serially connected on the described cold water pipeline.
Preferably, described circulating-water in thermal power plant heating system comprises the measurement mechanism that is used for gaging pressure and temperature.
Preferably, described heating network comprises steam turbine and condenser, described steam turbine is connected in the steam ports of going into of described condenser by the exhaust equipment of LP casing road, the recirculated water delivery port of described condenser is connected with described water supply main line, and described backwater main line is connected in the recirculated water water inlet of described condenser.
Preferably, described heating network also comprises heater, and this heater is serially connected on the described water supply main line.
Preferably, described heater is a vapor-water heat exchanger, and described steam turbine is connected in described heater by bleed steam pipework, and the steam pressure in the described bleed steam pipework is 0.3～0.8MPa.
Further, described circulating-water in thermal power plant heating system also comprises cooling tower, and this cooling tower is connected in the recirculated water water inlet of described condenser by the cooling tower supply channel, and is connected in the recirculated water delivery port of described condenser by the cooling tower water return pipeline.
Preferably, described heating network also comprises water replanishing device, and this water replanishing device side is connected on described backwater main line.
The steam (mainly being meant exhaust steam) that utilizes steam turbine to discharge in the heating network of the present utility model produces circulating hot water, and the heating user is warmed oneself by heating network direct heating water, has improved the efficiency of energy utilization of steam power plant effectively.In addition, also comprise the heat supply network of rivers and the refrigeration net that are connected with heating network in the utility model, this heat supply network of rivers and refrigeration net carry out heat supply water and refrigeration because of the electric power that need not to provide by steam power plant, thereby have reduced the consumption of high-grade energy (being electric energy).In other words, the utility model will heat, heat supply water and freeze integrated, to heat in the winter time, be used for air conditioner refrigerating in summer, and supply heat supply water in the whole year, thereby reduce the energy consumption of whole industry chain, make the using energy source maximization of steam power plant, realize the purpose of energy-saving and emission-reduction, reduced the carbon emission in city.
Other feature and advantage of the present utility model will partly be described in detail in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and constitutes the part of specification, is used from explanation the utility model with the following specific embodiment one, but does not constitute restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram of circulating-water in thermal power plant heating system of the present utility model;
Fig. 2 is the structural representation of heating network of the present utility model.
Description of reference numerals
1 steam turbine, 2 condensers
3 heaters, 4 water replanishing devices
5 heating users, 6 hot water users
7 air conditioner users, 8 cooling towers
9 station boilers, 10 exhaust equipment of LP casing roads
10a bleed steam pipework 11 water supply main lines
12 backwater main lines, 13 heating water supply branch roads
14 heating backwater branch roads, 15 first heat supply water branch roads
16 first backheat water branch roads, 17 second heat supply water branch roads
18 second backheat water branch roads, 19 cold water pipelines
20 hot water lines, 21 hot water feeding pipe roads
22 hot water backwater's pipelines, 23 refrigeration supply channels
24 cooling water pipelines, 30 flow control valves
31 switch valves, 32 boosters
33 water to water heater, 34 cold water storage cisterns
35 boilers, 36 supply-water pumps
37 heat-exchanger pumps, 38 refrigeration machines
39 water supply pumps, 40 storage tanks
41 measurement mechanisms, 44 butterfly valves
45 overflow passages, 51 low layer heating users
52 high-rise heating user 81 cooling tower supply channels
82 cooling tower water return pipelines
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.Should be understood that the specific embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
In the utility model, term " first ", " second " etc. only are used to distinguish different parts, device or different pipelines, and are not used in and specifically limit each parts, device and pipeline.
Referring to Fig. 1, the utility model relates to a kind of circulating-water in thermal power plant heating system, water supply main line 11 and backwater main line 12 and a plurality of heating user 5 that this circulating-water in thermal power plant heating system comprises heating network, is connected with heating network respectively, each heating user 5 is connected in water supply main line 11 by heating water supply branch road 13, and is connected in backwater main line 12 by heating backwater branch road 14.All will possibly can't satisfy the demand of heating user because the water temperature of recirculated water is too high or too low in the water supply main line 11 to indoor temperature.Therefore the water temperature with recirculated water in the water supply main line 11 is controlled at 70～80 ℃.After heating is finished, give air because of the exchange heat of recirculated water, make heating user 5 return water temperature reduce, like this, the circulating water temperature in backwater main line 12 is roughly 50～55 ℃.
As can be seen, in the utility model, heating user 5 is warmed oneself by heating network direct heating water, has improved the efficiency of energy utilization of steam power plant effectively.Heat because steam power plant is unified, the heat supply glassware for drinking water that it provides has identical temperature.Therefore, in order to satisfy the required heating temperature of different heating user 5, the utility model heating backwater branch road 14 is provided with flow control valve 30, to regulate the heating temperature at heating user 5 places.For example, regulate the aperture of flow control valve 30, the circling water flow rate on the heating backwater branch road 14 is strengthened, with raising heating user 5 heating temperature, otherwise, the circling water flow rate on the heating backwater branch road 14 is reduced, can reduce heating user 5 heating temperature.
Referring to Fig. 1, each heating user's 5 heating water supply branch road 13 is provided with switch valve 31, is preferably electric switching valve, so that a distant place opens and closes.During heating, switch valve 31 is opened, to heat to heating user 5; Do not heating or pipeline when safeguarding, switch valve 31 cuts out, to stop 5 heating to the heating user.In addition, the upstream and downstream position of the flow control valve 30 on heating backwater branch road 14 respectively is connected in series a switch valve, simultaneously also with the above-mentioned flow control valve 30 of another switch valve and heating backwater branch road 14 and two other connecing of switch valves.During heating, the switch valve that the side connects cuts out, and flow control valve 30 and two switch valves that are connected in series with it are opened, and heating user 5 circling water flow rate can be regulated, and be back to backwater main line 12; Not heating or pipeline when safeguarding, close flow control valve 30 and all switch valves, to stop 5 heating to the heating user; When flow control valve 30 breaks down, need close the switch valve that is connected in series with it, and open the other switch valve that connects, under the situation that does not stop to heat, can flow control valve 30 be keeped in repair.
Generally, heating user 5 comprises low layer heating user 51 and high-rise heating user 52.Wherein, low layer heating user 51 roughly is meant the heating user below ten layers, and high-rise heating user 52 roughly is meant the heating user more than ten layers.Because the pressure from the recirculated water of heating network is not enough to it is supplied to high-rise heating user 52 usually.Therefore, need with heating water supply branch road 13 that high-rise heating user 52 is connected on serial connection booster 32, improving the hydraulic pressure of recirculated water, and be pumped to high level by booster 32.
More than having described the circulating-water in thermal power plant heating system provides 70～80 ℃ heat source water heating.Be appreciated that heating can only occur in winter,, also can effectively utilize above-mentioned 70～80 ℃ heat source water, realize energy-saving and emission-reduction in non-heating season.
Circulating-water in thermal power plant heating system of the present utility model can also increase the heat supply network of rivers, with 70～80 ℃ heat source water as heat medium, be used for hot water user 6 is carried out heat supply water.These hot water user 6 is meant the user who uses various uses such as hot water washs, and these users can be identical users with the heating user, but have been to use different pipelines.
Referring to Fig. 1, circulating-water in thermal power plant heating system of the present utility model can comprise the first heat supply water branch road 15, the first backheat water branch road 16 and the water to water heater 33 that is used to heat cold water, the described first heat supply water branch road 15 is connected between the feed water inlet of water supply main line 11 and water to water heater 33, the described first backheat water branch road 16 is connected between the water return outlet and backwater main line 12 of water to water heater 33, like this, can be used as the heat medium of water to water heater 33 from the recirculated water of heating network, so that the cold water from hot water user 6 is heated, and be supplied to hot water user 6 to use the heated hot water.As seen from the figure, identical with heating water supply branch road 13, be serially connected with switch valve on the first heat supply water branch road 15, with the recirculated water supply of the main line 11 that when safeguarding, stops to supply water; The first backheat water branch road 16 is provided with flow control valve, regulating the flow of recirculated water, and then can control cold water can heated temperature.
As shown in Figure 1, circulating-water in thermal power plant heating system of the present utility model comprises cold water storage cistern 34 and boiler 35, and cold water storage cistern 34 can store city tap-water, and is connected in the cold water water inlet of water to water heater 33 by cold water pipeline 19, so that cold water to be provided; Boiler 35 also stores to receive hot water by the hot water outlet that hot water line 20 is connected in water to water heater 33.Be appreciated that under the situation that the city tap-water net can guarantee not interrupt supplying water, also cold water storage cistern 34 can be set, but cold water pipeline 19 directly is connected with the city tap-water net.
Concrete cold water heating process is: the recirculated water (70～80 ℃) from water supply main line 11 enters water water adding device 33 via the first heat supply water branch road 15, enter the cold water water inlet of water to water heater 33 simultaneously by cold water pipeline 19 from the cold water (10～15 ℃) of cold water storage cistern 34, at this moment, the cold water that recirculated water that temperature is high and temperature are low carries out heat exchange, make the temperature of recirculated water reduce (being roughly 50～55 ℃), realize the heating of cold water is produced hot water; The recirculated water of temperature reduction flows out from water to water heater 33 and flows back to backwater main line 12 by the first backheat water branch road 16 then, produced simultaneously hot water (65～75 ℃) is supplied to boiler 35 from the hot water outlet outflow of water to water heater 33 and by hot water line 20, in order to storing and follow-up supply.In addition, boiler 35 also is connected with overflow passage 45, after boiler 35 exceeds the water storage load, can open overflow passage 45, and release portion hot water is to guarantee boiler 35 reliable operations.
In the specific embodiment shown in Figure 1, comprise two water to water heater 33, but water to water heater 33 should not be limited to the number that shows among the figure.Comprise in the utility model when two water to water heater 33 can be implemented in a water to water heater 33 and safeguard, enable another water to water heater 33, thereby can heat cold water incessantly.As can be seen, be serially connected with switch valve respectively with on the pipeline that two water to water heater 33 are connected, by selecting opening or closing of different switch valves, to select to use one of them water to water heater 33 at the first heat supply water branch road 15.Be serially connected with butterfly valve 44 respectively with on the pipeline that the first backheat water branch road is connected at two water to water heater 33, with the flow of regulating recirculated water or block flowing of recirculated water.The butterfly valve 44 relevant with idle water to water heater 33 is in closed condition.
In addition, also be serially connected with described butterfly valve 44 respectively between the cold water water inlet of water to water heater 33 and the cold water pipeline 19 and between the hot water outlet of water to water heater 33 and the hot water line 20, in order to select to use water to water heater 33.In the utility model, those skilled in the art also can adopt other valves identical with butterfly valve 44 functions according to demand.
Preferably, in above-mentioned cold water heating process, in order to make the cold water in the cold water pipeline 19 have certain pressure and the easier water to water heater 33 that enters, serial connection supply-water pump 36 on cold water pipeline 19, this supply-water pump 36 preferably is arranged on the position near cold water storage cistern 34, water supply pump is delivered to water to water heater 33.
In the starting stage of cold water heating, hot water through water to water heater 33 heating possibly can't reach needed temperature, for this reason, starting stage in the cold water heating can be communicated with boiler 35 with cold water pipeline 19, start this heating process with certain hot water, by the time after satisfying required hot water temperature's requirement, again boiler 35 and cold water pipeline 19 are disconnected, by cold water storage cistern 34 cooling water, enter normal cold water heating process again.
Described above is cold water heating process, heated hot water is stored in the boiler 35, and be supplied to hot water user 6 by hot water feeding pipe road 21, if hot water user 6 does not use this hot water, then hot water user 6 backwater will flow back in the boiler 35 by hot water backwater's pipeline 22, wherein, the diameter of this hot water backwater's pipeline 22 is less than the diameter on hot water feeding pipe road 21.Equally, can on hot water feeding pipe road 21, be connected in series heat-exchanger pump 37, to improve the supply pressure of hot water, to make hot water to be supplied to the hot water user 6 who is in any high level.
The utility model is by increasing the heat supply network of rivers in the circulating-water in thermal power plant heating system, can in the four seasons, provide hot water for the user at any time, thereby improved the efficiency of thermal cycle of steam power plant, effectively utilize the heat energy of the Low Temperature Steam generation of steam turbine 1, carry out the cold water heating and the electric power that the user uses steam power plant to provide is provided, reduced the waste in the energy conversion.
In addition, in order further to reduce energy waste, circulating-water in thermal power plant heating system of the present utility model can also comprise the refrigeration net, freezes with the recirculated water that utilizes heating network, because of need not to freeze by the electric power that steam power plant provides, has reduced the waste of the energy.
Referring to Fig. 1, the circulating-water in thermal power plant heating system can comprise the second heat supply water branch road 17, the second backheat water branch road 18 and the refrigeration machine 38 that is used to freeze, the second heat supply water branch road 17 is connected between the feed water inlet of water supply main line 11 and refrigeration machine 38, and the second backheat water branch road 18 is connected between the water return outlet and backwater main line 12 of refrigeration machine 38.Like this, can be used as the driving heat source of refrigeration machine 38 from the recirculated water of heating network.Wherein, described refrigeration machine 38 mainly is meant lithium bromide refrigerator, but is not limited to lithium bromide refrigerator.The refrigeration machine that every recirculated water that can utilize high temperature drives all can be applied in the utility model.Structure and refrigeration principle about lithium bromide refrigerator are known in those skilled in the art, repeat no more.
As seen from Figure 1, identical with heating water supply branch road 13, be serially connected with switch valve on the second heat supply water branch road 17, with when safeguarding, the recirculated water supply of the main line 11 that stops to supply water; The second backheat water branch road 18 is provided with flow control valve, with the flow of adjusting recirculated water, and then can control refrigeration.
Referring to Fig. 1, the circulating-water in thermal power plant heating system comprises air conditioner user 7, and the backwater of this air conditioner user 7 flows to refrigeration machine 38 by refrigeration supply channel 23, and the chilled water after refrigeration machine 38 refrigeration is supplied to air conditioner user 7 by cooling water pipeline 24.Wherein, air conditioner user 7 is meant the user who is mounted with central air conditioner system or separate unit air-conditioning.
Concrete process of refrigerastion is: the feed water inlet that enters refrigeration machine 38 from the recirculated water (70～80 ℃) of water supply main line 11 via the second heat supply water branch road 17, to drive refrigeration machine 38 work, simultaneously, the cold water high relatively from the temperature (10～12 ℃) of air conditioner user 7 enters refrigeration machine 38 by refrigeration supply channel 23, and the chilled water that forms behind refrigeration machine 38 refrigerations (6～7 ℃) is supplied to air conditioner user 7 once more by cooling water pipeline 24.Simultaneously, flow back to backwater main line 12 by the second backheat water branch road 18, finish whole process of refrigerastion as the recirculated water of driving heat source.
Preferably, in above-mentioned process of refrigerastion, in order to make the high relatively cold water of temperature in the refrigeration supply channel 23 have certain pressure and the easier refrigeration machine 38 that enters, serial connection water supply pump 39 on refrigeration supply channel 23, this water supply pump 39 preferably is arranged on the position near air conditioner user 7, delivers to refrigeration machine 38 with the water supply pump that temperature is high relatively.
And, under the situation of the backwater quantity not sufficient of air conditioner user 7, can also increase storage tank 40, and will storage tank 40 other being connected between air conditioner user 7 and the water supply pump 39, be used for replenishing the cooling water of air-conditioning system, satisfy the refrigeration requirement of refrigeration machine 38.
More preferably, refrigeration machine 38 is serially connected on the cold water pipeline 19 in the heat supply network of rivers.Because with release heat, after being serially connected in refrigeration machine 38 on the cold water pipeline 19, the heat that refrigeration machine 38 discharges can be used for preheating of heat supply network of rivers cold water to refrigeration machine 38 in process of refrigerastion.As shown in Figure 1, cold water storage cistern 34 provides and is roughly 10～15 ℃ cold water, at the cold water that forms 15～20 ℃ after the preheating of refrigeration machine 38, and then is heated by water to water heater 33.This preheats process will freeze heat recovery that net discharges in the heat supply network of rivers, and the used heat of system is fully used.Need to prove that in the winter time, just cold water pipeline 19 is opened in the bypass valve (not shown) of refrigeration machine 38, to withdraw from refrigeration machine 38 operations.
In whole circulating-water in thermal power plant heating system, can be provided for the measurement mechanism 41 of gaging pressure and temperature in many places, this measurement mechanism 41 includes but not limited to Pressure gauge and thermometer etc.In the utility model, mainly measurement mechanism 41 is arranged on heating water supply branch road 13, heating backwater branch road 14, the first heat supply water branch road 15, the first backheat water branch road 16, the second heat supply water branch road 17 and the second backheat water branch road 18.According to force value and the temperature value that measurement mechanism 41 records, can monitor whole system by the heat supply network monitoring system and whether move normally.Wherein, the heat supply network monitoring system can be a content known in those skilled in the art, is not elaborated at this.
Referring to Fig. 2, related heating network has multiple version in the utility model, so that 70～80 ℃ heat source water to be provided.In embodiment shown in Figure 2, heating network comprises steam turbine 1 and condenser 2, steam turbine 1 is gone into steam ports (in practical operation by what exhaust equipment of LP casing road 10 was connected in condenser 2, steam turbine 1 direct UNICOM is in the steam ports of going into of condenser 2), offer condenser 2 with the low-pressure steam that will be not used in generating, condenser 2 will be from the steam condensation of steam turbine 1, and condensed condensate water recycles at power plant thermal system.
In the condensation process of above-mentioned condenser 2, use recirculated water as cooling medium, promptly be condensed in the process of condensate water at steam, recirculated water absorbs heat as cooling medium, thereby circulating water temperature is raise.Like this, the recirculated water delivery port of condenser 2 is connected with water supply main line 11, just can provide 70～80 ℃ heat source water, and backwater main line 12 is connected in the recirculated water water inlet of condenser 2, with the backwater in the backwater main line 12 once more as the cooling medium of condenser 2.
In the cyclic process of circulating-water in thermal power plant, the situation that the water yield reduces unavoidably can take place, thereby water replanishing device 4 can be set in heating network.As shown in Figure 2, water replanishing device 4 other being connected on the backwater main line 12.This water replanishing device 4 can be supported one hour moisturizing operation under the situation of big flood circular flow.
Preferably, in special arctic weather, the water temperature of the recirculated water that may provide at condenser 2 is lower and can not meet the demands the time, can the recirculated water from the recirculated water delivery port of condenser 2 be heated, and then is supplied to heating user 5.Referring to Fig. 2, heating network can also comprise heater 3 in the utility model, and this heater 3 is serially connected on the water supply main line 11, but the utility model is not limited thereto, and heater 3 also can be arranged on steam power plant.Wherein, heater 3 can be polytype heater, can be steam water heater, combustion heater, fuel heater or coal-fired heater etc. for example, but be not limited to above-mentioned heater types.
Preferably, above-mentioned heater 3 is a vapor-water heat exchanger, and like this, vapor-water heat exchanger can directly utilize drawing gas of steam turbine 1 to carry out heating operation, in order to improve the temperature of recirculated water in the heating network.As shown in Figure 2, steam turbine 1 is connected in heater 3 by bleed steam pipework 10a.Wherein being provided with the vapor extractor (not shown) with the operation of drawing gas, is known in those skilled in the art about vapor extractor and the process of drawing gas, and does not repeat them here.In addition, the steam pressure among the bleed steam pipework 10a is 0.3～0.8MPa, to be applicable to the job requirement of vapor-water heat exchanger.In this vapor-water heat exchanger, the steam of steam turbine 1 with carry out heat exchange from recirculated water in the condenser 2, make recirculated water be heated, be condensed into water after the steam release heat simultaneously, the condensate water of vapor-water heat exchanger can have identical purposes with the condensate water of condenser 2.
In addition, identical with the electricity generation system of existing steam power plant, circulating-water in thermal power plant heating system of the present utility model also comprises cooling tower 8, this cooling tower 8 is connected in the recirculated water water inlet of condenser 2 by cooling tower supply channel 81, and is connected in the recirculated water delivery port of condenser 2 by cooling tower water return pipeline 82.The recirculated water of condenser 2 does not need to heat or when carrying out other purposes, can provide cooling medium by cooling tower 8, to absorb in condenser 2 that steam is condensed into condensate water and the heat that discharges.Cooling tower 8 is as the reserved cooling system that ought not carry out circulating water heating to the user, to satisfy the needs of power plant's operation; Cooling tower 8 also can cooperate heating network to finish the needs that thermic load is adjusted simultaneously, and this part technology is known in those skilled in the art, does not repeat them here.
According to the above, the utility model will heat, heat supply water and freeze integrated, the Low Temperature Steam that utilizes steam turbine to discharge produces circulating hot water, to heat in the winter time, be used for air conditioner refrigerating in summer, and carry out heat supply water, thereby reduced the consumption of whole industry chain energy in the whole year, make the using energy source maximization of steam power plant, realized the purpose of energy-saving and emission-reduction.
Below describe preferred implementation of the present utility model in conjunction with the accompanying drawings in detail; but; the utility model is not limited to the detail in the above-mentioned embodiment; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Need to prove in addition, each concrete technical characterictic described in the above-mentioned specific embodiment under reconcilable situation, can make up by any suitable manner, for fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.As long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (20)
1. circulating-water in thermal power plant heating system, this circulating-water in thermal power plant heating system comprises heating network, water supply main line (11) that is connected with this heating network respectively and backwater main line (12) and a plurality of heating user (5), it is characterized in that, each described heating user (5) is connected in described water supply main line (11) by heating water supply branch road (13), and be connected in described backwater main line (12) by heating backwater branch road (14), described heating backwater branch road (14) is provided with flow control valve (30), to regulate the heating temperature that described heating user (5) locates.
2. circulating-water in thermal power plant heating system according to claim 1 is characterized in that, the circulating water temperature in the described water supply main line (11) is 70～80 ℃, and the circulating water temperature in the described backwater main line (12) is 50～55 ℃.
3. circulating-water in thermal power plant heating system according to claim 1, it is characterized in that, a plurality of described heating users (5) comprise low layer heating user (51) and high-rise heating user (52), and are serially connected with booster (32) on the heating water supply branch road (13) that described high-rise heating user (52) is connected.
4. circulating-water in thermal power plant heating system according to claim 1 and 2, it is characterized in that, described circulating-water in thermal power plant heating system comprises the first heat supply water branch road (15), the first backheat water branch road (16) and is used to heat the water to water heater (33) of cold water, the described first heat supply water branch road (15) is connected between the feed water inlet of described water supply main line (11) and described water to water heater (33), and the described first backheat water branch road (16) is connected between the water return outlet and described backwater main line (12) of described water to water heater (33).
5. circulating-water in thermal power plant heating system according to claim 4, it is characterized in that, described circulating-water in thermal power plant heating system comprises cold water storage cistern (34) and boiler (35), described cold water storage cistern (34) is connected in the cold water water inlet of described water to water heater (33) by cold water pipeline (19), and described boiler (35) is connected in the hot water outlet of described water to water heater (33) by hot water line (20).
6. circulating-water in thermal power plant heating system according to claim 5 is characterized in that, is serially connected with supply-water pump (36) on the described cold water pipeline (19).
7. circulating-water in thermal power plant heating system according to claim 5, it is characterized in that, described circulating-water in thermal power plant heating system comprises hot water user (6), the hot water of described boiler (35) is supplied to described hot water user (6) by hot water feeding pipe road (21), and described hot water user's (6) backwater flows back to described boiler (35) by hot water backwater's pipeline (22).
8. circulating-water in thermal power plant heating system according to claim 7 is characterized in that, is serially connected with heat-exchanger pump (37) on the described hot water feeding pipe road (21).
9. circulating-water in thermal power plant heating system according to claim 1, it is characterized in that, described circulating-water in thermal power plant heating system also comprises the second heat supply water branch road (17), the second backheat water branch road (18) and the refrigeration machine (38) that is used to freeze, the described second heat supply water branch road (17) is connected between the feed water inlet of described water supply main line (11) and described refrigeration machine (38), and the described second backheat water branch road (18) is connected between the water return outlet and described backwater main line (12) of described refrigeration machine (38).
10. circulating-water in thermal power plant heating system according to claim 4, it is characterized in that, described circulating-water in thermal power plant heating system also comprises the second heat supply water branch road (17), the second backheat water branch road (18) and the refrigeration machine (38) that is used to freeze, the described second heat supply water branch road (17) is connected between the feed water inlet of described water supply main line (11) and described refrigeration machine (38), and the described second backheat water branch road (18) is connected between the water return outlet and described backwater main line (12) of described refrigeration machine (38).
11. according to claim 9 or 10 described circulating-water in thermal power plant heating systems, it is characterized in that, described circulating-water in thermal power plant heating system comprises air conditioner user (7), the backwater of this air conditioner user (7) flows to described refrigeration machine (38) by refrigeration supply channel (23), and the chilled water after described refrigeration machine (38) refrigeration is supplied to described air conditioner user (7) by cooling water pipeline (24).
12. circulating-water in thermal power plant heating system according to claim 11 is characterized in that, is serially connected with water supply pump (39) on the described refrigeration supply channel (23).
13. circulating-water in thermal power plant heating system according to claim 12, it is characterized in that, described circulating-water in thermal power plant heating system also comprises the storage tank (40) that is used for moisturizing, and this storage tank (40) is other to be connected between described air conditioner user (7) and the described water supply pump (39).
14. circulating-water in thermal power plant heating system according to claim 10 is characterized in that, described refrigeration machine (38) is serially connected on the described cold water pipeline (19).
15. circulating-water in thermal power plant heating system according to claim 1 is characterized in that, described circulating-water in thermal power plant heating system comprises the measurement mechanism (41) that is used for gaging pressure and temperature.
16. circulating-water in thermal power plant heating system according to claim 1 and 2, it is characterized in that, described heating network comprises steam turbine (1) and condenser (2), described steam turbine (1) is connected in the steam ports of going into of described condenser (2) by exhaust equipment of LP casing road (10), the recirculated water delivery port of described condenser (2) is connected with described water supply main line (11), and described backwater main line (12) is connected in the recirculated water water inlet of described condenser (2).
17. circulating-water in thermal power plant heating system according to claim 16 is characterized in that, described heating network also comprises heater (3), and this heater (3) is serially connected on the described water supply main line (11).
18. circulating-water in thermal power plant heating system according to claim 17, it is characterized in that, described heater (3) is a vapor-water heat exchanger, described steam turbine (1) is connected in described heater (3) by bleed steam pipework (10a), and the steam pressure in the described bleed steam pipework (10a) is 0.3～0.8MPa.
19. circulating-water in thermal power plant heating system according to claim 16, it is characterized in that, described circulating-water in thermal power plant heating system also comprises cooling tower (8), this cooling tower (8) is connected in the recirculated water water inlet of described condenser (2) by cooling tower supply channel (81), and is connected in the recirculated water delivery port of described condenser (2) by cooling tower water return pipeline (82).
20. circulating-water in thermal power plant heating system according to claim 16 is characterized in that, described heating network also comprises water replanishing device (4), the other described backwater main line (12) that is connected on of this water replanishing device (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320101237 CN203099961U (en) | 2013-03-06 | 2013-03-06 | Circulating water heat-supply system of thermal power plant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320101237 CN203099961U (en) | 2013-03-06 | 2013-03-06 | Circulating water heat-supply system of thermal power plant |
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| CN203099961U true CN203099961U (en) | 2013-07-31 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115388A (en) * | 2013-03-06 | 2013-05-22 | 中国神华能源股份有限公司 | Thermal power plant circulating water heat supply system |
| CN103836697A (en) * | 2014-03-26 | 2014-06-04 | 华北电力大学 | Circulating water direct connection waste heat supply and steam extraction heat supply coupled combined heat and power generation heat supply system |
| CN104748186A (en) * | 2013-12-26 | 2015-07-01 | 白福有 | Double-station single-loop serial connection annular circulation concentrated heat supply network |
| CN115127136A (en) * | 2022-05-25 | 2022-09-30 | 华电电力科学研究院有限公司 | Energy storage and heat supply system and method based on renewable energy heating power station |
| CN115164261A (en) * | 2022-06-16 | 2022-10-11 | 华能(大连)热电有限责任公司 | Heating device in thermal power plant and method thereof |
-
2013
- 2013-03-06 CN CN 201320101237 patent/CN203099961U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115388A (en) * | 2013-03-06 | 2013-05-22 | 中国神华能源股份有限公司 | Thermal power plant circulating water heat supply system |
| CN103115388B (en) * | 2013-03-06 | 2015-07-15 | 中国神华能源股份有限公司 | Thermal power plant circulating water heat supply system |
| CN104748186A (en) * | 2013-12-26 | 2015-07-01 | 白福有 | Double-station single-loop serial connection annular circulation concentrated heat supply network |
| CN103836697A (en) * | 2014-03-26 | 2014-06-04 | 华北电力大学 | Circulating water direct connection waste heat supply and steam extraction heat supply coupled combined heat and power generation heat supply system |
| CN103836697B (en) * | 2014-03-26 | 2017-02-22 | 华北电力大学 | Circulating water direct connection waste heat supply and steam extraction heat supply coupled combined heat and power generation heat supply system |
| CN115127136A (en) * | 2022-05-25 | 2022-09-30 | 华电电力科学研究院有限公司 | Energy storage and heat supply system and method based on renewable energy heating power station |
| CN115127136B (en) * | 2022-05-25 | 2023-07-04 | 华电电力科学研究院有限公司 | Energy storage and heat supply system and method based on renewable energy source heating power station |
| CN115164261A (en) * | 2022-06-16 | 2022-10-11 | 华能(大连)热电有限责任公司 | Heating device in thermal power plant and method thereof |
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