CN201652566U - Asymmetric in-line heat supply device - Google Patents
Asymmetric in-line heat supply device Download PDFInfo
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- CN201652566U CN201652566U CN2010201864639U CN201020186463U CN201652566U CN 201652566 U CN201652566 U CN 201652566U CN 2010201864639 U CN2010201864639 U CN 2010201864639U CN 201020186463 U CN201020186463 U CN 201020186463U CN 201652566 U CN201652566 U CN 201652566U
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- heat supply
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- heating
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- extraction pressure
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Abstract
The utility model discloses an asymmetric in-line heat supply device capable of reducing the heat supply extraction pressure of a heat supply set, belonging to the energy technical field. Heat supply extraction control valves of two heat supply sets are connected with one heat net heater respectively, two heat net heaters are connected in series asymmetrically. According to the utility model, the asymmetric in-line heat supply device is employed to reduce the heat supply extraction pressure of the heat supply set, the step-by-step heating of the circulating water and the step-by-step utilization of the energy are achieved, compared with the conventional parallel connection arrangement mode, under the same heat supply, the outlet temperature of the circulating water can be improved, the heat supply extraction pressure of the first heat supply set can be reduced, in this way, the heat supply extraction pressure of the first heat supply set can be greatly reduced, the generating capacity of the set can be improved, under the same heat supply, more power can be penetrated, and the economic benefit of the thermal power plant can be increased.
Description
Technical field
The utility model belongs to energy technology field.Be particularly related to a kind of asymmetric series connection heating plant that heat supply unit heat supply extraction pressure is reduced.
Background technology
Present domestic heat supply unit layout feature mainly is that the heat exchangers for district heating as heating plant is arranged in parallel, be arranged in parallel in the system at two heating plants (heat exchangers for district heating), the heat supply of every heat supply unit is drawn gas and is with a heating plant, the schematic diagram of the mode that is arranged in parallel heating plant as shown in Figure 1, second level heat exchangers for district heating 3 and 4 parallel connections of first order heat exchangers for district heating.When two heating plant parallel runnings, two heat supply units are to the not influence each other of two heating plants, the heat supply of every the heat supply unit parameter of drawing gas is identical, extraction pressure is identical, heating-up temperature to recirculated water is the same, but provide temperature than higher hot water to requiring, the heat supply extraction pressure that then requires the heat supply unit is than higher.Also having a kind of arrangement is arranged in series, i.e. two heating plant arranged in series, wherein, the heat supply of every heat supply unit is drawn gas and is with a heating plant, but different to the heating-up temperature of recirculated water, is to heat step by step, the cascade utilization of energy can provide temperature than higher hot water.
The utility model content
The purpose of this utility model is to be arranged in parallel mode at two heating plants of available technology adopting, provide temperature than higher hot water to requiring, the heat supply extraction pressure of heat supply unit then provides a kind of asymmetric series connection heating plant than higher deficiency, it is characterized in that, the heat supply extraction control valve of two heat supply units respectively connects a heat exchangers for district heating, two heat exchangers for district heating series connection.
Described two heat exchangers for district heatings series connection is connected for asymmetric, promptly two heat supply units different with the heat exchange area of heat exchangers for district heating, other structural parameters are identical.
The beneficial effects of the utility model are heat supply extraction pressures that asymmetric series connection heating plant reduces the heat supply unit, realization is to the heating step by step of recirculated water, and the cascade utilization of energy is compared with the mode that is arranged in parallel of routine, under the identical situation of heating load, can improve the circulating water outlet temperature; And suitably increase by the first heat supply unit with the area of second level heat exchangers for district heating, reduce the heat supply extraction pressure of the first heat supply unit, greatly reduce the heat supply extraction pressure of heat supply unit like this, improved the generated energy of unit, under the identical situation of heating load, can be multiple electric, increase the economic benefit of steam power plant.
Description of drawings
Fig. 1 is the schematic diagram that is arranged in parallel the mode heating plant.
Fig. 2 is the schematic diagram of arranged in series mode heating plant.
Symbol among the figure:
The 1-first heat supply unit; The 2-second heat supply unit; 3-second level heat exchangers for district heating; 4-first order heat exchangers for district heating.
The specific embodiment
The utility model provides a kind of asymmetric series connection heating plant.Below in conjunction with accompanying drawing and example the utility model is described.
Figure 2 shows that the schematic diagram of arranged in series mode heating plant.The heat supply extraction control valve that the heat supply extraction control valve of the first heat supply unit connects second level heat exchangers for district heating 3 second heat supply units 2 connects first order heat exchangers for district heating 4, and second level heat exchangers for district heating 3 and first order heat exchangers for district heating 4 carry out the asymmetric series connection.Described two heat exchangers for district heatings series connection is the asymmetric series connection, promptly two heat supply units different with the heat exchange area of heat exchangers for district heating, other structural parameters are identical, a heat supply unit with second level heat exchangers for district heating heat exchange area than another heat supply unit big with the heat exchange area of first order heat exchangers for district heating, increased the heat transfer property of second level heat exchangers for district heating, the required extraction pressure of second level heat exchangers for district heating heating hot net water is reduced
The operational process of described heating plant is as follows, is example with 200MW heat supply unit:
If adopt heat supply mode in parallel, in conjunction with Fig. 1, the water yield of every heat exchangers for district heating is 528kg/s, and inlet temperature is 70 ℃, and outlet temperature is 125 ℃, and the heat supply extraction pressure of every heat supply unit is 0.33MPa, flow 360t/h.
If adopt the heat supply mode of series connection, heat supply network for, when return water temperature is 125/70 ℃, in conjunction with Fig. 2, the quantity of circulating water of the first order heat exchangers for district heating 4 that is connected with the second heat supply unit is 1056kg/s, the circulating water intake temperature is 70 ℃, outlet temperature is 97.5 ℃, and first order heat supply unit extraction pressure is 0.21MPa, flow 360t/h; The quantity of circulating water 1056kg/s of the second level heat exchangers for district heating 3 that is connected with the first heat supply unit, inlet temperature is 97.5 ℃, and outlet temperature is 125 ℃, and first order heat supply unit extraction pressure is 0.33MPa, flow 360t/h.
Claims (2)
1. an asymmetric series connection heating plant is characterized in that the heat supply extraction control valve of two heat supply units respectively connects a heat exchangers for district heating, two heat exchangers for district heating series connection; Promptly the heat supply extraction control valve of the first heat supply unit connects second level heat exchangers for district heating (3), and the heat supply extraction control valve of the second heat supply unit (2) connects first order heat exchangers for district heating (4).
2. according to the described asymmetric series connection of claim 1 heating plant, it is characterized in that described second level heat exchangers for district heating (3) and first order heat exchangers for district heating (4) carry out the asymmetric series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201864639U CN201652566U (en) | 2010-05-04 | 2010-05-04 | Asymmetric in-line heat supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201864639U CN201652566U (en) | 2010-05-04 | 2010-05-04 | Asymmetric in-line heat supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201652566U true CN201652566U (en) | 2010-11-24 |
Family
ID=43117805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201864639U Expired - Fee Related CN201652566U (en) | 2010-05-04 | 2010-05-04 | Asymmetric in-line heat supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201652566U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287870A (en) * | 2011-06-01 | 2011-12-21 | 山东泓奥电力科技有限公司 | Device of transformation of straight condensing unit into heat supply unit for improving heat supply economical effect |
| CN105065071A (en) * | 2015-09-25 | 2015-11-18 | 东方电气集团东方汽轮机有限公司 | High-pressure heat supply method for thermal power plant |
| CN111678187A (en) * | 2020-05-23 | 2020-09-18 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Double-machine back pressure flexible heat supply system with heat storage tank and method |
-
2010
- 2010-05-04 CN CN2010201864639U patent/CN201652566U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287870A (en) * | 2011-06-01 | 2011-12-21 | 山东泓奥电力科技有限公司 | Device of transformation of straight condensing unit into heat supply unit for improving heat supply economical effect |
| CN105065071A (en) * | 2015-09-25 | 2015-11-18 | 东方电气集团东方汽轮机有限公司 | High-pressure heat supply method for thermal power plant |
| CN111678187A (en) * | 2020-05-23 | 2020-09-18 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Double-machine back pressure flexible heat supply system with heat storage tank and method |
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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: 20101124 Termination date: 20150504 |
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| EXPY | Termination of patent right or utility model |