CN204404312U - The heat network system of efficiency utilization steam power plant heating steam - Google Patents
The heat network system of efficiency utilization steam power plant heating steam Download PDFInfo
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- CN204404312U CN204404312U CN201420859981.0U CN201420859981U CN204404312U CN 204404312 U CN204404312 U CN 204404312U CN 201420859981 U CN201420859981 U CN 201420859981U CN 204404312 U CN204404312 U CN 204404312U
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Abstract
The utility model discloses the heat network system of a kind of efficiency utilization steam power plant heating steam, solve the problem that existing heat supply network heating steam system energy utilization ratio is low.Comprise power plant's SS road (6) to be communicated with the steam inlet of second level heat exchangers for district heating (5) with the driving steam inlet of back pressure type small turbine (3) respectively, the delivery port of low temperature heat supply network circulating water line (7) and the water inlet of steam-operating pumps for hot water supply net (1) are connected together, the delivery port of steam-operating pumps for hot water supply net (1) is communicated with the water inlet of first order heat exchangers for district heating (4), the delivery port of first order heat exchangers for district heating (4) is communicated with the water inlet of second level heat exchangers for district heating (5), the delivery port of second level heat exchangers for district heating (5) is communicated with the water inlet of heat supply network recirculated water water supply line (8).The utility model greatly reduces the power consumption of circulation pump of heat-supply network, and effects of energy saving and emission reduction is remarkable.
Description
Technical field
The utility model relates to a kind of heat network system of cogeneration of heat and power, in particular to one by heat supply network heating steam first for generation of power drive circulation pump of heat-supply network, be used further to heat exchange recirculated water, the degree of superheat of steam and acting ability are able to the heat network system of more effective use.
Background technology
At present, in Cogeneration Project, the low-pressure pumping steam of steam turbine is substantially all directly by surface-type heat exchanger, heating heat supply network recirculated water, the hydrophobic therrmodynamic system returning steam turbine of low-pressure pumping steam, and heat supply network recirculated water drives with electric centrifugal pump, realizes circulation and inhales heat release.The heat of condensation of this system recoverable steam turbine low-pressure steam, but do not make full use of the degree of superheat of steam turbine low-pressure steam, effectively cannot utilize the acting ability of this part steam, drive the electric centrifugal pump of heat supply network recirculated water to need to consume a large amount of electric power simultaneously.
Summary of the invention
The utility model provides the heat network system of a kind of efficiency utilization steam power plant heating steam, solves the technical problem that existing heat supply network heating steam system energy utilization ratio is low.
The utility model solves above technical problem by the following technical programs:
The heat network system of a kind of efficiency utilization steam power plant heating steam, comprise steam-operating pumps for hot water supply net, electronic circulation pump of heat-supply network, back pressure type small turbine, first order heat exchangers for district heating and second level heat exchangers for district heating, power plant's SS road is communicated with the steam inlet of second level heat exchangers for district heating with the driving steam inlet of back pressure type small turbine respectively, the delivery port of low temperature heat supply network circulating water line and the water inlet of steam-operating pumps for hot water supply net are connected together, the delivery port of steam-operating pumps for hot water supply net is communicated with the water inlet of first order heat exchangers for district heating, the delivery port of first order heat exchangers for district heating is communicated with the water inlet of second level heat exchangers for district heating, the delivery port of second level heat exchangers for district heating is communicated with the water inlet of heat supply network recirculated water water supply line, the hydrophobic of hydrophobic and second level heat exchangers for district heating of first order heat exchangers for district heating is back to power plant's steam exhaust device or condenser hotwell.
The delivery port of electronic circulation pump of heat-supply network is communicated with the water inlet of first order heat exchangers for district heating, and the water inlet of electronic circulation pump of heat-supply network is communicated with the delivery port of low temperature heat supply network circulating water line.
Heat supply network heating steam is first done work by the little steam turbine of back pressure type to drive steam-operating circulation pump of heat-supply network by the utility model, again the steam discharge of little steam turbine is introduced first order heat exchangers for district heating, be used for carrying out first heat temperature raising to heat supply network recirculated water, from first order heat exchangers for district heating recirculated water out, be admitted to second level heat exchangers for district heating and carry out post bake intensification.The heating steam of part heat supply network achieves cascade utilization, and greatly reduce the power consumption of circulation pump of heat-supply network, effects of energy saving and emission reduction is remarkable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail:
The heat network system of a kind of efficiency utilization steam power plant heating steam, comprise steam-operating pumps for hot water supply net 1, electronic circulation pump of heat-supply network 2, back pressure type small turbine 3, first order heat exchangers for district heating 4 and second level heat exchangers for district heating 5, power plant's SS road 6 is communicated with the steam inlet of second level heat exchangers for district heating 5 with the driving steam inlet of back pressure type small turbine 3 respectively, the delivery port of low temperature heat supply network circulating water line 7 and the water inlet of steam-operating pumps for hot water supply net 1 are connected together, the delivery port of steam-operating pumps for hot water supply net 1 is communicated with the water inlet of first order heat exchangers for district heating 4, the delivery port of first order heat exchangers for district heating 4 is communicated with the water inlet of second level heat exchangers for district heating 5, the delivery port of second level heat exchangers for district heating 5 is communicated with the water inlet of heat supply network recirculated water water supply line 8, the hydrophobic of hydrophobic and second level heat exchangers for district heating 5 of first order heat exchangers for district heating 4 is back to power plant's steam exhaust device or condenser hotwell by hydrophobic pipeline 9.
The delivery port of electronic circulation pump of heat-supply network 2 is communicated with the water inlet of first order heat exchangers for district heating 4, and the water inlet of electronic circulation pump of heat-supply network 2 is communicated with the delivery port of low temperature heat supply network circulating water line 7.
Heat supply network heating steam system of the present utility model, be divided into two-way: first via steam, first as the driving steam of back pressure type small turbine, promote back pressure type small turbine and rotate acting, and drive circulation pump of heat-supply network work with this, this road steam is after the little steam turbine of back pressure type, and temperature, pressure declines, and then passes into first order heat exchangers for district heating and carry out first order heating to heat supply network recirculated water.Second road steam, directly introduces second level heat exchangers for district heating, as post bake thermal source.Heat supply network circulation, from the low temperature heat supply network recirculated water that user comes, boost through steam-operating water circulating pump, successively through the first order, the heat absorption of second level heat exchangers for district heating, heat user is flowed to again after intensification, electric water circulating pump only for start and for subsequent use, also can be designed in accidental conditions and the parallel running of steam-operating water circulating pump.The draining system of heat exchangers for district heating, the first order and second level heat exchangers for district heating hydrophobic, respectively through independently drainage pump separately, flows back to power plant's steam exhaust device or condenser hotwell by hydrophobic.A part of degree of superheat of heat supply network heating steam is utilized more efficiently, and effects of energy saving and emission reduction is remarkable.
Claims (2)
1. the heat network system of efficiency utilization steam power plant heating steam, comprise steam-operating pumps for hot water supply net (1), electronic circulation pump of heat-supply network (2), back pressure type small turbine (3), first order heat exchangers for district heating (4) and second level heat exchangers for district heating (5), it is characterized in that, power plant's SS road (6) is communicated with the steam inlet of second level heat exchangers for district heating (5) with the driving steam inlet of back pressure type small turbine (3) respectively, the delivery port of low temperature heat supply network circulating water line (7) and the water inlet of steam-operating pumps for hot water supply net (1) are connected together, the delivery port of steam-operating pumps for hot water supply net (1) is communicated with the water inlet of first order heat exchangers for district heating (4), the delivery port of first order heat exchangers for district heating (4) is communicated with the water inlet of second level heat exchangers for district heating (5), the delivery port of second level heat exchangers for district heating (5) is communicated with the water inlet of heat supply network recirculated water water supply line (8), the drain port of first order heat exchangers for district heating (4) is all communicated with hydrophobic pipeline (9) with the drain port of second level heat exchangers for district heating (5), hydrophobic pipeline 9 is communicated with condenser hotwell.
2. the heat network system of a kind of efficiency utilization steam power plant according to claim 1 heating steam, it is characterized in that, the delivery port of electronic circulation pump of heat-supply network (2) is communicated with the water inlet of first order heat exchangers for district heating (4), and the water inlet of electronic circulation pump of heat-supply network (2) is communicated with the delivery port of low temperature heat supply network circulating water line (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420859981.0U CN204404312U (en) | 2014-12-31 | 2014-12-31 | The heat network system of efficiency utilization steam power plant heating steam |
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| CN201420859981.0U CN204404312U (en) | 2014-12-31 | 2014-12-31 | The heat network system of efficiency utilization steam power plant heating steam |
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| CN204404312U true CN204404312U (en) | 2015-06-17 |
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| CN201420859981.0U Active CN204404312U (en) | 2014-12-31 | 2014-12-31 | The heat network system of efficiency utilization steam power plant heating steam |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698241A (en) * | 2016-01-29 | 2016-06-22 | 华电滕州新源热电有限公司 | Operation method of heating supply network circulating water pumps of 150 MW high-back-pressure heating supply unit |
| CN105757760A (en) * | 2016-04-29 | 2016-07-13 | 大唐东北电力试验研究所有限公司 | Heat supply network circulating water system applied in various combined driving modes |
| CN105783082A (en) * | 2016-04-29 | 2016-07-20 | 大唐东北电力试验研究所有限公司 | Energy-saving heating network circulating water system |
| CN105953286A (en) * | 2016-06-25 | 2016-09-21 | 郝炜 | Initial heat supply network station for waste heat utilization of coal-fired power plant |
| CN106121751A (en) * | 2016-08-04 | 2016-11-16 | 联合瑞升（北京）科技有限公司 | A kind of hot press heating energy-saving system |
-
2014
- 2014-12-31 CN CN201420859981.0U patent/CN204404312U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698241A (en) * | 2016-01-29 | 2016-06-22 | 华电滕州新源热电有限公司 | Operation method of heating supply network circulating water pumps of 150 MW high-back-pressure heating supply unit |
| CN105698241B (en) * | 2016-01-29 | 2018-10-19 | 华电滕州新源热电有限公司 | A kind of method of 150MW high back pressures thermal power plant unit circulation pump of heat-supply network operation |
| CN105757760A (en) * | 2016-04-29 | 2016-07-13 | 大唐东北电力试验研究所有限公司 | Heat supply network circulating water system applied in various combined driving modes |
| CN105783082A (en) * | 2016-04-29 | 2016-07-20 | 大唐东北电力试验研究所有限公司 | Energy-saving heating network circulating water system |
| CN105953286A (en) * | 2016-06-25 | 2016-09-21 | 郝炜 | Initial heat supply network station for waste heat utilization of coal-fired power plant |
| CN106121751A (en) * | 2016-08-04 | 2016-11-16 | 联合瑞升（北京）科技有限公司 | A kind of hot press heating energy-saving system |
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