CN205137620U - Heating heating system draws gas - Google Patents
Heating heating system draws gas Download PDFInfo
- Publication number
- CN205137620U CN205137620U CN201520899828.5U CN201520899828U CN205137620U CN 205137620 U CN205137620 U CN 205137620U CN 201520899828 U CN201520899828 U CN 201520899828U CN 205137620 U CN205137620 U CN 205137620U
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- Prior art keywords
- heat exchangers
- district heating
- heating
- cylinder
- pressure heat
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 165
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 238000000605 extraction Methods 0.000 claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims description 18
- 238000010276 construction Methods 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract 1
- 239000008400 supply water Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
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- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The utility model relates to a heating heating system draws gas, including boiler and steam turbine, the steam turbine includes the cylinder, the boiler is connected with high pressure cylinder and intermediate pressure cylinder respectively, and the intermediate pressure cylinder is connected with the low pressure jar, the heating network heater subassembly includes low pressure heating network heater, middling pressure heating network heater and high -pressure heating network heater, low pressure heating network heater, middling pressure heating network heater and high -pressure heating network heater connect gradually in the heat supply network water pipe on the road, low pressure heating network heater is connected with the low pressure jar, middling pressure heating network heater is connected with the intermediate pressure cylinder, high -pressure heating network heater is connected with the high pressure cylinder, wherein, be equipped with the governing valve on high pressure cylinder and high -pressure heating network heater's the connecting line. So, the large -traffic dispersion of drawing gas that will be single is drawn gas to at different levels, and extraction flow at different levels are little, need not to set up on the steam turbine special construction, and intermediate pressure cylinder and low pressure jar UNICOM pipeline pressure loss are little, does not influence pure steam turbine efficiency when moving with fixed attention of non - heating phase.
Description
Technical field
The utility model relates to central heating technical field, particularly relates to one and to draw gas heating system.
Background technology
Along with going deep into of national urbanization and urbanization process, there is the heat supply in winter demand gap of continuation in the northern area of China.At present, for reducing environmental pollution, improve energy utilization rate, energy-saving and emission-reduction, northern China some areas adopt the mode of central heating, and now most power plant, steam power plant and heating plant all carry the heat supply task of regional heating.
Usually, in order to satisfied minimizing pipeline investment and reduction delivery energy loss, most power plant, steam power plant and heating plant adopt Steam Heating hot net water mode, hot net water is after circulation pump of heat-supply network supercharging, enter multiple heat exchangers for district heating in parallel, after heat exchange heats up, heat supply network recirculated water is delivered to each user by heat distribution pipe network.Hot net water temperature is generally 40 ~ 60 degree, supply water temperature requires to reach 100 ~ 140 degree, the thermal source of heat exchangers for district heating is from extracted steam from turbine, the single intermediate pressure cylinder steam discharge of the many employings of existing steam power plant, but intermediate pressure cylinder exhaust steam pressure adjustable range is generally 0.1 ~ 0.4Mpa, corresponding saturation pressure temperature is 120 ~ 150 degree, larger with the heat transfer temperature difference of hot net water, cause irreversible energy loss, thus cause the loss of the useful work of steam.
Utility model content
Based on this, being necessary draws gas for traditional heat exchangers for district heating adopts single intermediate pressure cylinder steam discharge, large with the hot net water temperature difference, causes the problem of irreversible energy loss, provides one to draw gas heating system.
One is drawn gas heating system, for hot net water heating, comprising:
Boiler;
Steam turbine, comprises cylinder, and described cylinder has high pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder, and described boiler is connected with described high pressure cylinder and described intermediate pressure cylinder respectively, and described intermediate pressure cylinder is connected with described low pressure (LP) cylinder;
Heat exchangers for district heating assembly, comprise low pressure heat exchangers for district heating, middle pressure heat exchangers for district heating and high pressure heat exchangers for district heating, described low pressure heat exchangers for district heating, middle pressure heat exchangers for district heating and high pressure heat exchangers for district heating are connected on hot net water pipeline successively, to heat described hot net water, described low pressure heat exchangers for district heating is connected with described low pressure (LP) cylinder, described middle pressure heat exchangers for district heating is connected with described intermediate pressure cylinder, and described high pressure heat exchangers for district heating is connected with described high pressure cylinder;
Wherein, the connecting line of described high pressure cylinder and described high pressure heat exchangers for district heating is provided with control valve.
The above-mentioned heating system that draws gas, compare traditional heating system that draws gas, single large discharge is drawn gas and is distributed at different levels drawing gas, the amount of drawing gas at different levels is little, without the need to arranging special construction on steam turbine, intermediate pressure cylinder and low pressure (LP) cylinder UNICOM pipeline crushing little, do not affect non-heating period pure condensate run time steam turbine efficiency.In addition, the step mode of heating of high pressure cylinder steam discharge adopting low-pressure pumping steam, intermediate pressure cylinder steam discharge and do not heat, by the cascade utilization of energy, useful work loss is little, improves the utilization rate of energy.
Wherein in an embodiment, described boiler has the first venthole, the second venthole and the first air intake, the air intake of described high pressure cylinder is communicated with described first venthole, the venthole of described high pressure cylinder is communicated with described first air intake, the air intake of described intermediate pressure cylinder is communicated with described second venthole, and the extraction opening of described high pressure heat exchangers for district heating is communicated with the venthole of described high pressure cylinder.
Wherein in an embodiment, described control valve is pressure flow-regulating valves.
Wherein in an embodiment, described low pressure heat exchangers for district heating and described middle pressure heat exchangers for district heating are rank-reduced alogrithm heating.
Wherein in an embodiment, described low pressure heat exchangers for district heating is multiple, and is connected successively, and the extraction opening of multiple described low pressure heat exchangers for district heating is communicated with described low pressure (LP) cylinder respectively;
Described middle pressure heat exchangers for district heating is multiple, and be connected successively, the extraction opening of multiple described middle pressure heat exchangers for district heating is communicated with described intermediate pressure cylinder respectively, the described pressure heat exchangers for district heating being arranged in end is communicated with adjacent described low pressure heat exchangers for district heating, and the described pressure heat exchangers for district heating being arranged in head end is communicated with described high pressure heat exchangers for district heating.
Wherein in an embodiment, described in the heating system that draws gas also comprise temperature monitoring elements, described temperature monitoring elements is used for carrying out temperature monitoring to the hot net water in hot net water pipeline.
Wherein in an embodiment, described temperature monitoring elements comprises multiple temperature monitor, multiple described temperature monitor is located on described hot net water pipeline respectively, and lay respectively at the water inlet end of described low pressure heat exchangers for district heating and water side, the water inlet end of described middle pressure heat exchangers for district heating and water side, and the water inlet end of described high pressure heat exchangers for district heating and water side.
Wherein in an embodiment, described in the heating system that draws gas also comprise control unit, described control unit is connected with described temperature monitoring elements and described control valve respectively, to control to adjust described control valve according to the monitor temperature of described temperature monitoring elements.
Wherein in an embodiment, the described heating system that draws gas also comprises circulation pump of heat-supply network, described circulation pump of heat-supply network is located on described hot net water pipeline, and its water side is connected with described low pressure heat exchangers for district heating, heats for hot net water being extracted extremely described low pressure heat exchangers for district heating.
Accompanying drawing explanation
Fig. 1 is the structural representation of the heating system that draws gas of an embodiment;
Fig. 2 is the structural representation of the heating system that draws gas of another embodiment.
Detailed description of the invention
For the ease of understanding the utility model, below with reference to relevant drawings, the utility model is described more fully.Preferred embodiment of the present utility model is given in accompanying drawing.But the utility model can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make the understanding of disclosure of the present utility model more comprehensively thorough.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.Term as used herein " vertical ", " level ", "left", "right" and similar statement are just for illustrative purposes.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present utility model understand usually.The object of the term used in description of the present utility model herein just in order to describe specific embodiment, is not intended to be restriction the utility model.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
As shown in Figure 1, the heating system 10 that draws gas in the utility model one preferred embodiment, for heating hot net water, it comprises boiler 12, steam turbine 14 and heat exchangers for district heating assembly 16.This steam turbine 14 comprises cylinder, and this cylinder has high pressure cylinder 142, intermediate pressure cylinder 144 and low pressure (LP) cylinder 146, and this boiler 12 is connected with this high pressure cylinder 142 and intermediate pressure cylinder 144 respectively, and this intermediate pressure cylinder 144 is connected with this low pressure (LP) cylinder 146.This heat exchangers for district heating assembly 16 comprises low pressure heat exchangers for district heating 162, middle pressure heat exchangers for district heating 164 and high pressure heat exchangers for district heating 166, this low pressure heat exchangers for district heating 162, middle pressure heat exchangers for district heating 164 and high pressure heat exchangers for district heating 166 are connected on hot net water pipeline successively, to heat hot net water, this low pressure heat exchangers for district heating 162 is connected with low pressure (LP) cylinder 146, press heat exchangers for district heating 164 to be connected with intermediate pressure cylinder 144 in this, this high pressure heat exchangers for district heating 166 is connected with high pressure cylinder 142.Wherein, this high pressure cylinder 142 is provided with control valve 168 with the connecting line of this high pressure heat exchangers for district heating 166.
Particularly, this boiler 12 has the first venthole 122, second venthole 124 and the first air intake 126, the air intake of this high pressure cylinder 142 is communicated with this first venthole 122, the venthole of this high pressure cylinder 142 is communicated with this first air intake 126, the air intake of this intermediate pressure cylinder 144 is communicated with this second venthole 124, and the extraction opening of this high pressure heat exchangers for district heating 166 is communicated with the venthole of this high pressure cylinder 142.Refer to Fig. 1, in the present embodiment, this heating system 10 that draws gas also comprises circulation pump of heat-supply network 18, and this circulation pump of heat-supply network 18 is located on hot net water pipeline, its water side is connected with low pressure heat exchangers for district heating 162, for hot net water extraction being heated to this low pressure heat exchangers for district heating 162.
By with specific embodiment, the operation principle that this draws gas heating system 10 is described below:
As shown in Figure 1, first the steam that boiler 12 produces enter high pressure cylinder 142 from the first venthole 122 by the air intake of high pressure cylinder 142, reentered in boiler 12 after heating by the second air intake of boiler 12 from the venthole of high pressure cylinder 142 after pressurization, and carry out intermediate pressure cylinder 144 from the second venthole 124 of boiler 12.Afterwards, steam by intermediate pressure cylinder 144 and connecting line between low pressure (LP) cylinder 146 enter in low pressure (LP) cylinder 146.According to the requirement of heat supply network supply water temperature, first hot net water enters low pressure heat exchangers for district heating 162 through hot net water pipeline, by entering middle pressure heat exchangers for district heating 164 successively after the heating of low pressure heat exchangers for district heating 162 and high pressure heat exchangers for district heating 166 carries out further heat temperature raising to hot net water respectively, be supplied to each user eventually through heat supply network supply channel.Wherein, this low pressure heat exchangers for district heating 162 drawing gas from low pressure (LP) cylinder 146, and middle pressure heat exchangers for district heating 164 draws gas all without the need to arranging regulation measure from intermediate pressure cylinder 144, at high pressure heat exchangers for district heating 166, control valve 168 is set from the high pressure extraction pipeline of high pressure cylinder 142, thus controls final heat supply network supply water temperature.
So, compare traditional heating system 10 that draws gas, single large discharge is drawn gas and is distributed at different levels drawing gas, the amount of drawing gas at different levels is little, without the need to arranging special construction on steam turbine, intermediate pressure cylinder 144 and low pressure (LP) cylinder 146 UNICOM pipeline crushing little, do not affect non-heating period pure condensate run time steam turbine efficiency.In addition, adopt the step mode of heating that the high pressure cylinder 142 drawing gas from low-pressure pumping steam, intermediate pressure cylinder 144 and do not heat draws gas, by the cascade utilization of energy, useful work loss is little, improves the utilization rate of energy.
Preferably, this control valve 168 is pressure flow-regulating valves, by regulating high pressure extraction amount and the steam pressure entering high pressure heat exchangers for district heating 166, namely controls final heat supply network supply water temperature.
This heating system 10 that draws gas also comprises temperature monitoring elements (not shown), this temperature monitoring elements is used for carrying out temperature monitoring to the hot net water in hot net water pipeline, thus by regulating control valve 168, reach requirement to make the temperature entering heat supply network supply channel.In the present embodiment, this temperature monitoring elements comprises temperature monitor (not shown), this temperature monitor multiple is located on this hot net water pipeline respectively, and lay respectively at water inlet end and water side, the water inlet end of pressing heat exchangers for district heating 164 in this and the water side of this low pressure heat exchangers for district heating 162, and the water inlet end of this high pressure heat exchangers for district heating 166 and water side.It should be noted that, the water inlet end of the water inlet end of low pressure heat exchangers for district heating 162 and water side and middle pressure heat exchangers for district heating 164 and water side, and the water inlet end of high pressure heat exchangers for district heating 166 and water side refer to water inlet end and the water side of the connection of hot net water pipeline and heat exchangers for district heating.
Further, this heating system 10 that draws gas also comprises control unit (not shown), and this control unit is connected with this temperature monitoring elements and control valve 168 respectively, to control to adjust this control valve 168 according to the monitor temperature of this temperature monitoring elements.Particularly, this temperature monitor is connected to this control unit by wireless telecommunications, and control unit is according to the temperature of hot net water thus regulate the flow drawn gas of control valve 168 and pressure, thus regulates the temperature of water temperature further.In the present embodiment, hot net water temperature after the heating of this low pressure heat exchangers for district heating 162 is 80 ~ 100 degree, hot net water temperature after pressing heat exchangers for district heating 164 to heat in this is 100 ~ 120 degree, and the hot net water temperature after the heating of this high pressure heat exchangers for district heating 166 is 120 ~ 140 degree.
In another embodiment, this low pressure heat exchangers for district heating 162 and this in press heat exchangers for district heating 164 to be rank-reduced alogrithm heater.As shown in Figure 2, this low pressure heat exchangers for district heating 162 is multiple, is connected successively, and the extraction opening of multiple low pressure heat exchangers for district heating 162 is communicated with low pressure (LP) cylinder 146 respectively.Press heat exchangers for district heating 164 also in this for multiple, be communicated with successively, the extraction opening of multiple middle pressure heat exchangers for district heating 164 is communicated with intermediate pressure cylinder 144 respectively, the pressure heat exchangers for district heating 164 being arranged in end is communicated with adjacent low pressure heat exchangers for district heating 162, and the pressure heat exchangers for district heating 164 being arranged in head end is communicated with high pressure heat exchangers for district heating 166.Further single large discharge is drawn gas and is distributed at different levels drawing gas, with use intermediate pressure cylinder 144 and low pressure (LP) cylinder 146 connecting pipeline crushing little, do not affect steam turbine efficiency when non-heating period pure condensate runs.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this description is recorded.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (9)
1. draw gas a heating system, for heating hot net water, it is characterized in that, comprise:
Boiler;
Steam turbine, comprises cylinder, and described cylinder has high pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder, and described boiler is connected with described high pressure cylinder and described intermediate pressure cylinder respectively, and described intermediate pressure cylinder is connected with described low pressure (LP) cylinder;
Heat exchangers for district heating assembly, comprise low pressure heat exchangers for district heating, middle pressure heat exchangers for district heating and high pressure heat exchangers for district heating, described low pressure heat exchangers for district heating, middle pressure heat exchangers for district heating and high pressure heat exchangers for district heating are connected on hot net water pipeline successively, to heat described hot net water, described low pressure heat exchangers for district heating is connected with described low pressure (LP) cylinder, described middle pressure heat exchangers for district heating is connected with described intermediate pressure cylinder, and described high pressure heat exchangers for district heating is connected with described high pressure cylinder;
Wherein, the connecting line of described high pressure cylinder and described high pressure heat exchangers for district heating is provided with control valve.
2. the heating system that draws gas according to claim 1, it is characterized in that, described boiler has the first venthole, the second venthole and the first air intake, the air intake of described high pressure cylinder is communicated with described first venthole, the venthole of described high pressure cylinder is communicated with described first air intake, the air intake of described intermediate pressure cylinder is communicated with described second venthole, and the extraction opening of described high pressure heat exchangers for district heating is communicated with the venthole of described high pressure cylinder.
3. the heating system that draws gas according to claim 1, is characterized in that, described control valve is pressure flow-regulating valves.
4. the heating system that draws gas according to claim 1, is characterized in that, described low pressure heat exchangers for district heating and described middle pressure heat exchangers for district heating are rank-reduced alogrithm heating.
5. the heating system that draws gas according to claim 4, is characterized in that, described low pressure heat exchangers for district heating is multiple, and is connected successively, and the extraction opening of multiple described low pressure heat exchangers for district heating is communicated with described low pressure (LP) cylinder respectively;
Described middle pressure heat exchangers for district heating is multiple, and be connected successively, the extraction opening of multiple described middle pressure heat exchangers for district heating is communicated with described intermediate pressure cylinder respectively, the described pressure heat exchangers for district heating being arranged in end is communicated with adjacent described low pressure heat exchangers for district heating, and the described pressure heat exchangers for district heating being arranged in head end is communicated with described high pressure heat exchangers for district heating.
6. the heating system that draws gas according to claim 1, is characterized in that, described in the heating system that draws gas also comprise temperature monitoring elements, described temperature monitoring elements is used for carrying out temperature monitoring to the hot net water in hot net water pipeline.
7. the heating system that draws gas according to claim 6, it is characterized in that, described temperature monitoring elements comprises multiple temperature monitor, multiple described temperature monitor is located on described hot net water pipeline respectively, and lay respectively at the water inlet end of described low pressure heat exchangers for district heating and water side, the water inlet end of described middle pressure heat exchangers for district heating and water side, and the water inlet end of described high pressure heat exchangers for district heating and water side.
8. the heating system that draws gas according to claim 6, it is characterized in that, the described heating system that draws gas also comprises control unit, described control unit is connected with described temperature monitoring elements and described control valve respectively, to control to adjust described control valve according to the monitor temperature of described temperature monitoring elements.
9. the heating system that draws gas according to claim 1, it is characterized in that, the described heating system that draws gas also comprises circulation pump of heat-supply network, described circulation pump of heat-supply network is located on described hot net water pipeline, its water side is connected with described low pressure heat exchangers for district heating, heats for hot net water being extracted extremely described low pressure heat exchangers for district heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520899828.5U CN205137620U (en) | 2015-11-12 | 2015-11-12 | Heating heating system draws gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520899828.5U CN205137620U (en) | 2015-11-12 | 2015-11-12 | Heating heating system draws gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205137620U true CN205137620U (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520899828.5U Expired - Fee Related CN205137620U (en) | 2015-11-12 | 2015-11-12 | Heating heating system draws gas |
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| Country | Link |
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| CN (1) | CN205137620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352002A (en) * | 2015-11-12 | 2016-02-24 | 中国能源建设集团广东省电力设计研究院有限公司 | Steam exhausting heat supply system |
-
2015
- 2015-11-12 CN CN201520899828.5U patent/CN205137620U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352002A (en) * | 2015-11-12 | 2016-02-24 | 中国能源建设集团广东省电力设计研究院有限公司 | Steam exhausting heat supply system |
| CN105352002B (en) * | 2015-11-12 | 2018-09-25 | 中国能源建设集团广东省电力设计研究院有限公司 | Steam extraction heating system |
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Legal Events
| 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: 20160406 |