CN203628786U - High-backpressure heat supply serially connected two-stage heating system - Google Patents
High-backpressure heat supply serially connected two-stage heating system Download PDFInfo
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- CN203628786U CN203628786U CN201320799096.3U CN201320799096U CN203628786U CN 203628786 U CN203628786 U CN 203628786U CN 201320799096 U CN201320799096 U CN 201320799096U CN 203628786 U CN203628786 U CN 203628786U
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Abstract
The utility model relates to the field of smoke evacuation preheating grading utilization, and particularly relates to a high-backpressure heat supply serially connected two-stage heating system. The output end of a low-pressure cylinder is connected with a condenser, the condenser is further successively connected with a first heat supply network isolation valve, a heat supply network circulating pump, a secondary heat supply network water-water heat exchanging station, and a second heat supply network isolation valve to form a loop, a drainage pipe is connected between the condenser and the first heat supply network isolation valve, a water inlet pipe is connected between the condenser and the second heat supply network isolation valve, a circulating water pump and a second seawater isolation valve are arranged on the water inlet pipe, a first heating and steam extraction valve is arranged on a steam transferring pipe at the output end of a high-medium pressure cylinder and is connected to a first-station heat supply network steam-water heater after being parallelly connected with a second heating and steam extraction valve at the output end of an adjacent machine, and the secondary heat supply network water-water heat exchanging station and a user pipeline form a loop. The heating system provided realizes zero cold source loss of a unit during winter heat supply; and because the steam extraction amount of the unit is greatly reduced, the power generation of the unit is increased, thereby achieving significant economic benefits.
Description
(1) technical field
The utility model relates to city heat supply field, particularly a kind of high back pressure heat supply series connection two-stage heat-operated system.
(2) background technology
City dweller's major part is all central heating, provide department as thermal source, in order to realize, " in the heating phase, high back pressure circulating water heating operating mode heat supply unit exhausted spare heat is all utilized, cold source energy is reduced to zero, to obtain maximum energy saving economy benefit, under non-heating period pure condensate operating condition, unit heat consumption rate is not higher than the hear rate level under former pure condensate design conditions, realizing annual overall economic efficiency maximizes " this target, adopt " two back pressure birotors exchange circulating water heating " this technology to carry out heat supply, heat supply unit is transformed, common heating system can not be satisfied the demand.
(3) summary of the invention
The utility model, in order to make up the defect of prior art, provides a kind of and has adapted to new heating system and make the generated output of unit realize the high back pressure heat supply series connection two-stage heat-operated system rising appreciably.
The utility model is achieved by the following technical solution:
A kind of high back pressure heat supply series connection two-stage heat-operated system, comprise heat supply unit, heat supply unit comprises high intermediate pressure cylinder and low pressure (LP) cylinder, it is characterized in that, also comprise condenser, initial station heat supply network steam water heater and secondary hot net water-water heat exchange station, wherein the output of low pressure (LP) cylinder is connected with condenser, condenser also with the first heat supply network isolating valve, pumps for hot water supply net, secondary hot net water-water heat exchange station, the second heat supply network isolating valve connects successively and returns condenser, form loop, on pipeline between condenser and the first heat supply network isolating valve, be also connected with the drainpipe with the first seawater isolating valve, on pipeline between condenser and the second heat supply network isolating valve, be also connected with water inlet pipe, described water inlet pipe is provided with water circulating pump and the second seawater isolating valve, the steam transmitting pipe of the output of described high intermediate pressure cylinder is provided with the first heating extraction valve, after it is in parallel with the second heating extraction valve on the steam transmitting pipe of adjacent machine output, be connected on the heat supply network steam water heater of initial station, secondary hot net water-water heat exchange station and user pipe form loop.
The beneficial effects of the utility model are:
Not only to have realized unit cold source energy be zero to the utility model the heat supply phase in the winter time, and because the amount of drawing gas of this unit greatly reduces, the generated output that has increased this unit is realized remarkable in economical benefits.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is overall structure schematic diagram of the present utility model.
In figure, 1 heat supply unit, 2 high intermediate pressure cylinders, 3 low pressure (LP) cylinders, 4 condensers, 5 initial station heat supply network steam water heaters, 6 secondary hot net water-water heat exchange stations, 7 first heat supply network isolating valves, 8 pumps for hot water supply net, 9 second heat supply network isolating valves, 10 first seawater isolating valves, 11 drainpipes, 12 second seawater isolating valves, 13 water inlet pipes, 14 water circulating pumps, 15 steam transmitting pipes, 16 first heating extraction valves, 17 second heating extraction valves, 18 user pipe.
(5) specific embodiment
Accompanying drawing is specific embodiment of the utility model.As shown in Figure 1, this kind of high back pressure heat supply series connection two-stage heat-operated system, comprise heat supply unit 1, heat supply unit 1 comprises high intermediate pressure cylinder 2 and low pressure (LP) cylinder 3, also comprise condenser 4, initial station heat supply network steam water heater 5 and secondary hot net water-water heat exchange station 6, wherein the output of low pressure (LP) cylinder 3 is connected with condenser 4, condenser 4 also with the first heat supply network isolating valve 7, pumps for hot water supply net 8, secondary hot net water-water heat exchange station 6, the second heat supply network isolating valve 9 connects and returns condenser 4 successively, form loop, on pipeline between condenser 4 and the first heat supply network isolating valve 7, be also connected with the drainpipe 11 with the first seawater isolating valve 10, on pipeline between condenser 4 and the second heat supply network isolating valve 9, be also connected with water inlet pipe 13, described water inlet pipe 13 is provided with water circulating pump 14 and the second seawater isolating valve 12, the steam transmitting pipe 15 of the output of described high intermediate pressure cylinder 2 is provided with the first heating extraction valve 16, after it is in parallel with the second heating extraction valve 17 on the steam transmitting pipe 15 of adjacent machine output, be connected on initial station heat supply network steam water heater 5, secondary hot net water-water heat exchange station 6 forms loop with user pipe 18.
In the time of summer operation, open the first seawater isolating valve 10 and the second seawater isolating valve 12, close the first heat supply network isolating valve 7 and the second heat supply network isolating valve 9, close the first heating extraction valve 16 and the second heating extraction valve 17, carry out cooling by seawater to condenser 4, guarantee heat supply unit 1 vacuum, realize 1 safe operation of heat supply unit.
When the operation of heating low heat loads in the winter time, open the first heat supply network isolating valve 7 and the second heat supply network isolating valve 9, close the first seawater isolating valve 10 and the second seawater isolating valve 12, close the first heating extraction valve 16 and the second heating extraction valve 17, because reaching 54KP exhaust temperature, heat supply unit 1 back pressure after transformation reaches 83 ℃, so heat supply network backwater can reach 80 ℃ through condenser 4 temperature after heating, for winter when heat supply network underload, 80 ℃ of hot water can heat and directly be fed to secondary hot net water-water heat exchange station 6 without initial station heat supply network steam water heater 5 and after the heat exchange of row water-water, carry out heat supply, realize by heat supply network recirculated water and carry out cooling heat supply unit 1.
In the winter time when heating high load capacity, on original basis, open the first heating extraction valve 16, because the hot net water of former 80 ℃ of the increase of heating demand can not meet the increase of heating demand, at this moment open the first heating extraction valve 16, draw gas and carry out hot net water post bake in initial station heat supply network steam water heater 5 with 1 heating of heat supply unit, meet the increase of heating demand by adjusting the heating quantity of steam that draws gas.
In the time of the cold period of the utmost point in the winter time, the heating of this heat supply unit 1 is drawn gas heating and condenser 4 heating can not meet thermic load requirement time, at this time open the second heating extraction valve 17 as the occasion requires, the variation of thermic load while adjusting utmost point cold weather by increasing as the occasion requires a part of steam.
Except technical characterictic described in description, all the other technical characterictics are those skilled in the art's known technology.
Claims (1)
1. a high back pressure heat supply series connection two-stage heat-operated system, comprise heat supply unit (1), heat supply unit (1) comprises high intermediate pressure cylinder (2) and low pressure (LP) cylinder (3), it is characterized in that, also comprise condenser (4), initial station heat supply network steam water heater (5) and secondary hot net water-water heat exchange station (6), wherein the output of low pressure (LP) cylinder (3) is connected with condenser (4), condenser (4) also with the first heat supply network isolating valve (7), pumps for hot water supply net (8), secondary hot net water-water heat exchange station (6), the second heat supply network isolating valve (9) connects successively and returns condenser (4), form loop, on pipeline between condenser (4) and the first heat supply network isolating valve (7), be also connected with the drainpipe (11) with the first seawater isolating valve (10), on pipeline between condenser (4) and the second heat supply network isolating valve (9), be also connected with water inlet pipe (13), described water inlet pipe (13) is provided with water circulating pump (14) and the second seawater isolating valve (12), the steam transmitting pipe (15) of the output of described high intermediate pressure cylinder (2) is provided with the first heating extraction valve (16), after it is in parallel with the second heating extraction valve (17) on the steam transmitting pipe (15) of adjacent machine output, be connected on initial station heat supply network steam water heater (5), secondary hot net water-water heat exchange station (6) forms loop with user pipe (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320799096.3U CN203628786U (en) | 2013-12-09 | 2013-12-09 | High-backpressure heat supply serially connected two-stage heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320799096.3U CN203628786U (en) | 2013-12-09 | 2013-12-09 | High-backpressure heat supply serially connected two-stage heating system |
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| CN203628786U true CN203628786U (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320799096.3U Expired - Fee Related CN203628786U (en) | 2013-12-09 | 2013-12-09 | High-backpressure heat supply serially connected two-stage heating system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439987A (en) * | 2015-11-02 | 2017-02-22 | 张文峰 | Low-temperature afterheat recycling system |
| CN107191232A (en) * | 2017-06-06 | 2017-09-22 | 大唐东北电力试验研究所有限公司 | Electric heating unit heating system |
| CN109099499A (en) * | 2018-08-28 | 2018-12-28 | 华电电力科学研究院有限公司 | A kind of the coal-burning power plant's high back pressure series connection extraction for heat supply system and its working method of the control of thermic load peak valley |
-
2013
- 2013-12-09 CN CN201320799096.3U patent/CN203628786U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439987A (en) * | 2015-11-02 | 2017-02-22 | 张文峰 | Low-temperature afterheat recycling system |
| CN107191232A (en) * | 2017-06-06 | 2017-09-22 | 大唐东北电力试验研究所有限公司 | Electric heating unit heating system |
| CN109099499A (en) * | 2018-08-28 | 2018-12-28 | 华电电力科学研究院有限公司 | A kind of the coal-burning power plant's high back pressure series connection extraction for heat supply system and its working method of the control of thermic load peak valley |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20201209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |