CN107621179B - Built-in drain well heat supply network heater - Google Patents
Built-in drain well heat supply network heater Download PDFInfo
- Publication number
- CN107621179B CN107621179B CN201710969020.3A CN201710969020A CN107621179B CN 107621179 B CN107621179 B CN 107621179B CN 201710969020 A CN201710969020 A CN 201710969020A CN 107621179 B CN107621179 B CN 107621179B
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- shell
- drain
- section
- heat exchange
- tube bundle
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000002209 hydrophobic effect Effects 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 27
- 239000000463 material Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241000237942 Conidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a built-in drain well heat supply network heater, which belongs to the field of auxiliary machines of power stations, and comprises a shell, wherein the shell comprises a barrel body and a barrel section which are connected, a heat exchange tube bundle is arranged in the shell, the heat exchange tube bundle is divided into a saturation section and a drain cooling section, the shell also comprises an eccentric shell which is connected with the barrel body and the barrel section, the eccentric shell is eccentric downwards relative to the barrel body and the barrel section, the eccentric shell is sunk below the bottoms of the barrel body and the barrel section to form a drain well, the water level of the drain well is controlled between the bottoms of the heat exchange tube bundle and the bottoms of the barrel body and the barrel section, the drain cooling section of the heat exchange tube bundle is of a siphon structure, an inlet pipe of the drain cooling section of the heat exchange tube bundle penetrates into the bottoms of the eccentric shell, and the heat exchange tube bundle outside the drain cooling section is still used as the saturation section below the center line of the shell. The invention not only optimizes the stress condition of the drain well, reduces the impact of steam on the tube bundle, simplifies the water level control, avoids the low water level and water-free operation of the drain cooling section, but also improves the heat exchange efficiency, ensures stable equipment operation, occupies small space and has less equipment material consumption.
Description
Technical Field
The invention belongs to the field of auxiliary machines of power stations.
Background
The heat supply network heater of the thermal power plant or other heat supply systems is generally provided with a drainage well which is adapted to the drainage pump in order to ensure the stable operation of the unit. The drain well is generally arranged in a split type, namely, a drain tank is arranged at the lower part of the equipment. There is also a horizontal semicircular drain well structure (referred to as a bottom integrated drain well for short) arranged at the bottom of the cylinder of the heat supply network heater.
There are disadvantages: the heat supply network heater adopting the split drain well has the advantages of large occupied space, high material consumption, high manufacturing cost and complex water level control. The heat supply network heater of the bottom integrated drain well is adopted, the stress condition of the drain well end plate is poor, the material consumption is large, the equipment cost is high, the ineffective heat exchange area of the drain cooling section is large, the drain cooling section is immersed, and the water level control is complex.
Disclosure of Invention
The invention aims at: in order to improve the stress condition of the drain well, the heat supply network heater with the built-in drain well structure is provided, the stress condition of the drain well is optimized, the impact of steam on a tube bundle is lightened, the water level control is simplified, the low water level and no water level operation of a drain cooling section is avoided, the heat exchange efficiency is improved, the equipment operation is stable, the occupied space is small, and the equipment consumption is low.
The aim of the invention is achieved by the following technical scheme:
the utility model provides an built-in hydrophobic well heating network heater, which comprises an outer shell, the shell includes barrel and the shell ring that are connected, be equipped with heat exchange tube bank in the shell, heat exchange tube bank divide into saturation section and dredge the cold section, the shell still includes the eccentric shell that links to each other with barrel and shell ring, eccentric shell is eccentric downwards with barrel and shell ring, this eccentric shell is under relative barrel and shell ring bottom sinking and is formed a hydrophobic well, hydrophobic well control water level control is between heat exchange tube bank bottom to barrel and shell ring bottom, heat exchange tube bank dredge the cold section for siphon structure, its dredge the cold section inlet tube and go deep into the bottom of eccentric shell, and shell center line below, dredge the heat exchange tube bank outside the cold section still as saturation section.
The space at the lower part of the eccentric shell is a drain well for storing a certain amount of drain water. When the equipment is in operation, steam enters the heater through the steam inlet pipe, and is subjected to heat transfer in the saturation section of the equipment and condensed into a drainage well which is condensed at the bottom of the equipment. When the water level is higher than the inlet pipe of the cooling section, the water seal of the cooling section is formed, the water enters the cooling section through siphoning action and is filled, and finally the water flows out of the heater from the water drain outlet, so that the heat exchange of the cooling section is completed. The control water level of the equipment is controlled between the bottom of the heat exchange tube bundle and the bottom of the cylinder body, and even the lowest water level can ensure the water-repellent capacity of the lower part of the eccentric shell and ensure the operation of the drain pump of the heating network heater. The distance between the running water level and the inlet pipe of the cooling section is quite large and is far larger than the false water level value, so that air inlet of the cooling section caused by misjudgment is avoided. Because the siphon cooling section is adopted, the heat exchange pipe outside the cooling section can still be used as a saturation section for heat exchange below the central line of the equipment. Compared with immersion type, the heat exchange area of the area is fully utilized, and the ineffective area is reduced.
Alternatively, a critical drain and/or a drain is provided at the bottom of the drain well. In this scheme, the water drain can set up as required, can set up alone, also can set up at critical drainage pipeline nadir.
Alternatively, a roller slideway is arranged between the heat exchange tube bundle and the shell.
As a further option, the roller slideway is composed of rollers on the heat exchange tube bundle and the eccentric shell and the rail at the bottom of the barrel. In this scheme, be equipped with the gyro wheel slide support between casing and the tube bank, the assembly is laborsaving, has avoided the shearing damage of tube bank fish tail and tube sheet department heat exchange tube.
Optionally, a steam inlet, a drain outlet and a water level measuring sampling port are also arranged on the shell.
The foregoing inventive subject matter and various further alternatives thereof may be freely combined to form a plurality of alternatives, all of which are employable and claimed herein; and the invention can be freely combined between the (non-conflicting choices) choices and between the choices and other choices. Various combinations will be apparent to those skilled in the art from a review of the present disclosure, and are not intended to be exhaustive or all of the present disclosure.
The invention has the beneficial effects that: according to the invention, the built-in drain well is formed through the eccentric shell, so that on one hand, the stress of the drain well is improved, the connection is stable and safe, the installation is easy, the occupied space of equipment is small, the consumption is less, and the heat exchange efficiency is high; on the other hand, the steam inlet adopts the eccentric shell, so that the steam flow area is enlarged, the steam flow speed is reduced, the flushing of steam to the tube bundle is relieved, and the tube vibration and tube explosion induction factors are eliminated. Meanwhile, a siphon cooling section is adopted, and a heat exchange pipe outside the cooling section can still be used as a saturation section for heat exchange below the central line of the equipment. Compared with immersion type, the heat exchange area of the area is fully utilized, and the ineffective area is reduced. In addition, the roller slideway support is arranged between the shell and the tube bundle, so that the assembly is time-saving and labor-saving, and the scratch of the tube bundle and the shearing damage of the heat exchange tube at the tube plate are avoided.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic diagram of a shell side media flow according to an embodiment of the present invention;
the device comprises a cylinder body, a steam inlet, a 3-U-shaped heat exchange tube bundle, a cylinder section, a tube plate, a heated water outlet, a 7-separation partition plate, a 8-tube box, a 9-heated water inlet, a 10-drainage outlet, an 11-eccentric shell, a 12-critical drainage outlet, a 13-water outlet, a 14-roller, a 15-track, a 16-cooling section inlet tube, a 17-saturation section and a 18-cooling section.
Detailed Description
The following non-limiting examples illustrate the invention.
Example 1:
referring to fig. 1-3, the shell ring 4 is welded with the tube plate 5, the eccentric shell 11 (two sections of eccentric cone shells and a large-diameter cylinder) and the shell ring 4 and the shell body 1 form a shell, the tube plate 5 is connected with the U-shaped heat exchange tube bundle 3, and the U-shaped heat exchange tube bundle 3 is divided into a saturation section 17 and a cooling section 18. The eccentric shell 11 is eccentric downwards relative to the cylinder body 1 and the cylinder section 4, the eccentric shell 11 sinks below the bottoms of the cylinder body 1 and the cylinder section 4 to form a drain well, a drain well space at the lower part of the eccentric shell 11 stores drain water to form a built-in drain well, a critical drain outlet 12 and a drain outlet 13 are arranged at the bottom of the drain well, a steam inlet 2 is arranged at the upper part of the eccentric shell 11, a drain outlet 10 and a drain cooling section air discharging port are arranged on the cylinder section 4, a shell side air discharging port is arranged at the upper part of the cylinder body 1, a safety valve is arranged, and connecting pipes such as a water level sampling port are arranged at the middle lower part of the cylinder body. The inlet pipe 16 of the cooling section extends to the bottom of the cooling well, a siphon cooling section is adopted, and the U-shaped heat exchange tube bundle 3 outside the cooling section 18 is still used as a saturation section 17 below the central line of the shell. The drain well is controlled to have a water level controlled in the area A shown in figure 2, namely, between the bottom of the U-shaped heat exchange tube bundle 3 and the bottoms of the cylinder body 1 and the cylinder section 4. The pipe box 8 is provided with heated water inlets and outlets 9 and 6, and a separation baffle 7 is arranged in the pipe box. A roller slideway is arranged between the U-shaped heat exchange tube bundle 3 and the shell through rollers 14 on the U-shaped heat exchange tube bundle 3, the eccentric shell 11 and a track 15 on the barrel body 1. The eccentric shell 11 is provided with a manhole, and the equipment shell is welded with the shell ring 4 and then is provided with a cooling section inlet pipe 16.
Example 2:
this embodiment is substantially the same as embodiment 1 except that the bottom of the drain hole is provided with a critical drain outlet 12, and the drain is at the lowest point of the critical drain pipe.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. The utility model provides an built-in drain well heat supply network heater, includes the shell, and the shell is equipped with heat transfer tube bank including barrel and the shell ring that is connected in the shell, and heat transfer tube bank divide into saturation section and drain cold section, its characterized in that: the shell also comprises an eccentric shell connected with the cylinder body and the cylinder section, the eccentric shell is eccentric downwards relative to the cylinder body and the cylinder section, the eccentric shell is sunk below the bottoms of the cylinder body and the cylinder section relatively to form a drain well, the water level of the drain well is controlled between the bottom of the heat exchange tube bundle and the bottom of the cylinder body and the cylinder section, the drain section of the heat exchange tube bundle is of a siphon structure, the inlet pipe of the drain section of the heat exchange tube bundle extends into the bottom of the eccentric shell, and the heat exchange tube bundle outside the drain section is still used as a saturation section below the central line of the shell.
2. A built-in hydrophobic well heat supply network heater as claimed in claim 1, wherein: the bottom of the drain well is provided with a critical drain port and/or a drain port.
3. A built-in hydrophobic well heat supply network heater as claimed in claim 1, wherein: a roller slideway is arranged between the heat exchange tube bundle and the shell.
4. A built-in hydrophobic well heat supply network heater as claimed in claim 3, wherein: the roller slideway consists of rollers on the heat exchange tube bundle, an eccentric shell and a rail at the bottom of the cylinder body.
5. A built-in hydrophobic well heat supply network heater as claimed in claim 1, wherein: the shell is also provided with a steam inlet, a drainage outlet and a water level measuring sampling port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710969020.3A CN107621179B (en) | 2017-10-18 | 2017-10-18 | Built-in drain well heat supply network heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710969020.3A CN107621179B (en) | 2017-10-18 | 2017-10-18 | Built-in drain well heat supply network heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107621179A CN107621179A (en) | 2018-01-23 |
| CN107621179B true CN107621179B (en) | 2023-10-31 |
Family
ID=61092629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710969020.3A Active CN107621179B (en) | 2017-10-18 | 2017-10-18 | Built-in drain well heat supply network heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107621179B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB715162A (en) * | 1951-06-29 | 1954-09-08 | Lavals Angturbin Ab De | Improvements in surface condensers |
| JPS53147103A (en) * | 1977-05-27 | 1978-12-21 | Hitachi Ltd | Multitubular system heat exchager |
| SU982707A1 (en) * | 1980-11-27 | 1982-12-23 | Краснодарский ордена Трудового Красного Знамени политехнический институт | Heat mass exchange apparatus |
| US4577682A (en) * | 1984-08-30 | 1986-03-25 | Ga Technologies Inc. | Heat exchanger |
| JPS6428492A (en) * | 1987-07-22 | 1989-01-31 | Matsushita Electric Works Ltd | Heat exchanger |
| CN200940826Y (en) * | 2006-05-26 | 2007-08-29 | 蔡锡琮 | Horizontal heater for realizing low dispelling cold section end difference |
| CN201443997U (en) * | 2009-06-23 | 2010-04-28 | 山东鲁润热能科技有限公司 | Heater for expansion heating network |
| CN101994669A (en) * | 2010-11-08 | 2011-03-30 | 刘方亮 | Solar thermoelectric co-production device |
| CN202469378U (en) * | 2012-03-09 | 2012-10-03 | 中投（天津）热能装备发展有限公司 | Prefabricated directly buried steam diameter-varying flat bottom heat-insulating pipe |
| CN202469380U (en) * | 2012-03-09 | 2012-10-03 | 中投（天津）热能装备发展有限公司 | Vertically-laid compensation elbow for prefabricated directly-buried steam heat-insulation pipe tape end cap |
| CN202501160U (en) * | 2012-03-12 | 2012-10-24 | 中投（天津）热能装备发展有限公司 | Prefabricated direct-buried steam insulating pipe horizontal laying compensation bend |
| CN103471082A (en) * | 2013-09-04 | 2013-12-25 | 哈尔滨锅炉厂有限责任公司 | Three-section horizontal type feed water heater for 200MW units |
| CN203869554U (en) * | 2014-06-09 | 2014-10-08 | 刘英聚 | High-temperature-resistant single-tube-pass heat exchanger |
| CN206019378U (en) * | 2016-08-05 | 2017-03-15 | 华力高科（北京）热能技术有限公司 | A kind of vapor-water heat exchanger with hydrophobic cooling section |
| CN107120992A (en) * | 2017-06-21 | 2017-09-01 | 华电郑州机械设计研究院有限公司 | A kind of new entrance erosion control heat exchangers for district heating |
-
2017
- 2017-10-18 CN CN201710969020.3A patent/CN107621179B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB715162A (en) * | 1951-06-29 | 1954-09-08 | Lavals Angturbin Ab De | Improvements in surface condensers |
| JPS53147103A (en) * | 1977-05-27 | 1978-12-21 | Hitachi Ltd | Multitubular system heat exchager |
| SU982707A1 (en) * | 1980-11-27 | 1982-12-23 | Краснодарский ордена Трудового Красного Знамени политехнический институт | Heat mass exchange apparatus |
| US4577682A (en) * | 1984-08-30 | 1986-03-25 | Ga Technologies Inc. | Heat exchanger |
| JPS6428492A (en) * | 1987-07-22 | 1989-01-31 | Matsushita Electric Works Ltd | Heat exchanger |
| CN200940826Y (en) * | 2006-05-26 | 2007-08-29 | 蔡锡琮 | Horizontal heater for realizing low dispelling cold section end difference |
| CN201443997U (en) * | 2009-06-23 | 2010-04-28 | 山东鲁润热能科技有限公司 | Heater for expansion heating network |
| CN101994669A (en) * | 2010-11-08 | 2011-03-30 | 刘方亮 | Solar thermoelectric co-production device |
| CN202469378U (en) * | 2012-03-09 | 2012-10-03 | 中投（天津）热能装备发展有限公司 | Prefabricated directly buried steam diameter-varying flat bottom heat-insulating pipe |
| CN202469380U (en) * | 2012-03-09 | 2012-10-03 | 中投（天津）热能装备发展有限公司 | Vertically-laid compensation elbow for prefabricated directly-buried steam heat-insulation pipe tape end cap |
| CN202501160U (en) * | 2012-03-12 | 2012-10-24 | 中投（天津）热能装备发展有限公司 | Prefabricated direct-buried steam insulating pipe horizontal laying compensation bend |
| CN103471082A (en) * | 2013-09-04 | 2013-12-25 | 哈尔滨锅炉厂有限责任公司 | Three-section horizontal type feed water heater for 200MW units |
| CN203869554U (en) * | 2014-06-09 | 2014-10-08 | 刘英聚 | High-temperature-resistant single-tube-pass heat exchanger |
| CN206019378U (en) * | 2016-08-05 | 2017-03-15 | 华力高科（北京）热能技术有限公司 | A kind of vapor-water heat exchanger with hydrophobic cooling section |
| CN107120992A (en) * | 2017-06-21 | 2017-09-01 | 华电郑州机械设计研究院有限公司 | A kind of new entrance erosion control heat exchangers for district heating |
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| Publication number | Publication date |
|---|---|
| CN107621179A (en) | 2018-01-23 |
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