CN103423858A - High-power electric-heating heat exchanger - Google Patents
High-power electric-heating heat exchanger Download PDFInfo
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- CN103423858A CN103423858A CN2012101647518A CN201210164751A CN103423858A CN 103423858 A CN103423858 A CN 103423858A CN 2012101647518 A CN2012101647518 A CN 2012101647518A CN 201210164751 A CN201210164751 A CN 201210164751A CN 103423858 A CN103423858 A CN 103423858A
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- heat exchanger
- cylindrical shell
- heating elements
- electrical heating
- water inlet
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Abstract
The invention relates to a heat exchanger, in particular to a high-power electric-heating heat exchanger. A heat exchanger barrel is in a cylindrical barrel structure with two ends sealed by tube plates. A water inlet tube is disposed at the top of one end of the barrel. A discharge tube is disposed at the bottom of one end of the barrel. A water outlet tube is disposed at the bottom of the other end of the barrel. A plurality of baffles are fixed on the inner wall of the barrel sequentially from top to bottom and are reinforced and fixed through pipe spacers. A plurality of electric heating elements are fixed on two sides of the tube plates, and the electric heating elements extending into the barrel are arranged in a parallel and cross manner and are fixedly supported by the baffles. The heat exchanger is mounted on a secondary-side hydrostatic test device of a steam generator and used for circulation heating for secondary-side fluid of the steam generator; test medium can be heated in the specified range in a short time, so that secondary-side hydrostatic test period is shortened effectively and test efficiency is improved.
Description
Technical field
The present invention relates to a kind of heat exchanger, particularly relate to a kind of large power, electrically heating heat exchanger.
Background technology
For building nuclear power station, after the on-the-spot installation in position of nuclear power construction, carry out the water pressure test at steam generator to steam generator secondary side and attached pipeline thereof, with the reliability of check steam generator, pipeline and valve, ensure the safe operation of nuclear power station.Steam generator secondary side water pressure test General Requirements test(ing) medium temperature, between 30 ~ 60 ℃, therefore need to be heated test(ing) medium.Add the hydronic mode of thermal recovery: driven by circulating pump, the test(ing) medium of steam generator secondary side is circulated, cold fluid is transported to heat exchanger from steam generator secondary side, by heat exchanger, is heated as hot water return to steam generator.Require this heat exchanger heating power large, there is certain bearing capacity, stable performance; Volume is little, and exchange capability of heat is strong, can in limited space, be arranged; The electrical heating elements adopted has explosion prevention function, prevents from causing heating element heater explosion, test for contamination medium and steam generator because of long-time heating; Heat exchange efficiency is high, and the electrical heating elements surface temperature is low, avoids carrying out smoothly of electrical heating elements waste heat impact test.Through investigation, like product in the market all can not meet above-mentioned requirements simultaneously.Therefore, need a kind of novel electrical heating heat-exchanger rig of development, for carrying out the steam generator secondary side water pressure test.
Simultaneously, for carrying out the needs of nuclear power correlated response heap thermal hydraulic test research, also be necessary to develop such a heater, in limited space, arranged, the preheating of realization to the loop test medium, make test(ing) medium reach nominal parameter, meets test requirements document.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of large power, electrically heating heat exchanger, can solve the requirement of the steam generator secondary side water pressure test and other hydraulic boiler set, has the advantages that volume is little, power is large, the thermal efficiency is high.
For solving the problems of the technologies described above, a kind of large power, electrically heating heat exchanger of the present invention, comprise water inlet pipe, cylindrical shell, tube sheet, electrical heating elements and outlet pipe, wherein, cylindrical shell is cylindrical structure, its two ends seal by tube sheet, the upper end of cylindrical shell one end is equipped with water inlet pipe, lower end is equipped with blow-off pipe, the lower end of the other end of cylindrical shell is equipped with outlet pipe, several deflection plates are fixed on cylinder inboard wall successively up and down, and by distance sink tube, strengthen fixing, some electrical heating elements are separately fixed at the tube sheet both sides, and the electrical heating elements level crossing that stretches into inner barrel is arranged, and by several deflection plates, supported fixing.
The cylindrical structure that described water inlet pipe is lower end closed, and the water inlet pipe lower end edge cylinder barrel that stretches into inner barrel has several holes, realization, to enter the assignment of traffic of cylindrical shell cold water by water inlet pipe, prevents that high-velocity flow from directly impacting electrical heating elements, ensures the safety of electrical heating elements.
The upper and lower two ends of described cylindrical shell are provided with liquid level gauge, and the liquid level in can heat exchanger is detected, and guarantees that electrical heating elements, at any time in floodage, effectively prevents dry combustion method.
The setting of the quantity of described deflection plate, spacing and height can effectively improve the cylindrical shell inner fluid speed, enhanced heat exchange, the surface temperature of reduction electrical heating elements.
Described electrical heating elements adopts the 380V AC-powered, and the electrical power maximum can reach 400kW.
The bearing fixed support is passed through in described cylindrical shell lower end, and is fixedly connected with ground by construction bolt.
Effect of the present invention is: a kind of large power, electrically heating heat exchanger of the present invention is arranged on the steam generator secondary side water test unit, the steam generator secondary side fluid is carried out to circulating-heating, can meet in the short period of time test(ing) medium is heated in the scope of regulation, effectively shorten the duration of the secondary side water pressure test, improved test efficiency; Simultaneously, owing to introducing the deflection plate enhanced heat exchange, effectively avoid the electrical heating elements waste heat to testing the interference of normally carrying out, ensured the safety of electrical heating elements simultaneously.
The accompanying drawing explanation
Fig. 1 is a kind of large power, electrically heating heat exchanger structural representation provided by the present invention;
Fig. 2 is the A-A cutaway view in Fig. 1;
Fig. 3 is the B-B cutaway view in Fig. 1;
Fig. 4 is the C-C cutaway view in Fig. 1;
In figure, 1, distance sink tube; 2, water inlet pipe; 3, cylindrical shell; 4, tube sheet; 5, electrical heating elements; 6, deflection plate; 7, blow-off pipe; 8, bearing; 9, liquid level gauge; 10, outlet pipe.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further detailed explanation.
As shown in Fig. 1 ~ 4, a kind of large power, electrically heating heat exchanger, comprise water inlet pipe 2, cylindrical shell 3, tube sheet 4, electrical heating elements 5, deflection plate 6 and outlet pipe 10, wherein, cylindrical shell 3 is cylindrical structure, and its two ends are by tube sheet 4 sealings, and cylindrical shell 3 meets the design pressure requirement with the thickness of tube sheet 4, bearing 8 fixed supports are passed through in cylindrical shell 3 lower ends, and are fixedly connected with ground by construction bolt; The upper end of cylindrical shell 3 one ends is equipped with water inlet pipe 2, lower end is equipped with blow-off pipe 7, the lower end of the other end of cylindrical shell 3 is equipped with outlet pipe 10, wherein, the cylindrical structure that water inlet pipe 2 is lower end closed, and the water inlet pipe 2 lower end edge cylinder barrels that stretch into cylindrical shell 3 inside have several holes, realize enter the assignment of traffic of cylindrical shell 3 cold water by water inlet pipe 2, prevent that high-velocity flow from directly impacting electrical heating elements 5, ensure the safety of electrical heating elements 5; Several deflection plates 6 are fixed on cylindrical shell 3 inwalls successively up and down, and strengthen fixing by distance sink tube 1, introduce deflection plate 6 and can effectively improve cylindrical shell 3 inner fluid speeds, enhanced heat exchange, the surface temperature of reduction electrical heating elements 5; Some electrical heating elements 5 are separately fixed at tube sheet 4 both sides, and stretch into the electrical heating elements 5 level crossings layouts of cylindrical shell 3 inside, and are supported by several deflection plates 6, and electrical heating elements 5 adopts the 380V AC-powered, and the electrical power maximum can reach 400kW; Two ends liquid level gauge 9 is installed at cylindrical shell Shang Xia 3, the liquid level in can heat exchanger is detected, and guarantees that electrical heating elements 5, at any time in floodage, effectively prevents dry combustion method.
Claims (6)
1. a large power, electrically heating heat exchanger, comprise water inlet pipe (2), cylindrical shell (3), tube sheet (4), electrical heating elements (5) and outlet pipe (10), wherein, cylindrical shell (3) is cylindrical structure, its two ends are by tube sheet (4) sealing, the upper end of cylindrical shell (3) one ends is equipped with water inlet pipe (2), lower end is equipped with blow-off pipe (7), the lower end of the other end of cylindrical shell (3) is equipped with outlet pipe (10), it is characterized in that: several deflection plates (6) are fixed on cylindrical shell (3) inwall successively up and down, and by distance sink tube (1), strengthen fixing, some electrical heating elements (5) are separately fixed at tube sheet (4) both sides, and stretching into inner electrical heating elements (5) level crossing of cylindrical shell (3) arranges, and by several deflection plates (6), supported fixing.
2. a kind of large power, electrically heating heat exchanger according to claim 1, it is characterized in that: described water inlet pipe (2) is the cylindrical structure of lower end closed, and stretch into inner water inlet pipe (2) the lower end edge cylinder barrel of cylindrical shell (3) and have several holes, realization is to entering the assignment of traffic of cylindrical shell (3) cold water by water inlet pipe (2), prevent that high-velocity flow from directly impacting electrical heating elements (5), ensure the safety of electrical heating elements (5).
3. a kind of large power, electrically heating heat exchanger according to claim 1, it is characterized in that: the upper and lower two ends of described cylindrical shell (3) are provided with liquid level gauge (9), liquid level in can heat exchanger is detected, and guarantees that electrical heating elements (5), at any time in floodage, effectively prevents dry combustion method.
4. a kind of large power, electrically heating heat exchanger according to claim 1, it is characterized in that: the setting of the quantity of described deflection plate (6), spacing and height can effectively improve cylindrical shell (3) inner fluid speed, enhanced heat exchange, the surface temperature of reduction electrical heating elements (5).
5. according to described any one large power, electrically heating heat exchanger of claim 1 ~ 4, it is characterized in that: described electrical heating elements (5) adopts the 380V AC-powered, and the electrical power maximum can reach 400kW.
6. a kind of large power, electrically heating heat exchanger according to claim 1 is characterized in that: described cylindrical shell (3) lower end is by bearing (8) fixed support, and is fixedly connected with ground by construction bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210164751.8A CN103423858B (en) | 2012-05-24 | 2012-05-24 | A kind of large power, electrically heating heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210164751.8A CN103423858B (en) | 2012-05-24 | 2012-05-24 | A kind of large power, electrically heating heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103423858A true CN103423858A (en) | 2013-12-04 |
| CN103423858B CN103423858B (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210164751.8A Expired - Fee Related CN103423858B (en) | 2012-05-24 | 2012-05-24 | A kind of large power, electrically heating heat exchanger |
Country Status (1)
| Country | Link |
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| CN (1) | CN103423858B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743087A (en) * | 2014-01-21 | 2014-04-23 | 华能无锡电热器材有限公司 | Energy saving heat exchanger |
| CN115468301A (en) * | 2022-10-26 | 2022-12-13 | 中国核动力研究设计院 | Generating set energy consumption device |
| CN117889556A (en) * | 2024-03-14 | 2024-04-16 | 山东宝玺节能燃料有限公司 | Energy-saving electric heating heat exchanger |
Citations (7)
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| KR20080001625A (en) * | 2006-06-28 | 2008-01-03 | 카템 게엠베하 운트 캄파니 카게 | Electric heating device |
| CN201138051Y (en) * | 2007-11-26 | 2008-10-22 | 海尔集团公司 | Water storage type electric water heater |
| CN201364050Y (en) * | 2009-01-04 | 2009-12-16 | 济南张夏供水换热设备有限公司 | Highly-effective film-plating vortex type heat exchanger |
| CN201373549Y (en) * | 2009-01-20 | 2009-12-30 | 扬州市中日电器设备有限公司 | Novel fluid electric heater |
| CN201417003Y (en) * | 2008-11-19 | 2010-03-03 | 江苏裕兴电器有限公司 | Vertical energy-saving electric heater for ship |
| CN102192586A (en) * | 2010-03-11 | 2011-09-21 | 中国核动力研究设计院 | High power density electric heating water tank for secondary pre-service hydraulic pressure test of steam generator |
| CN102331079A (en) * | 2011-07-20 | 2012-01-25 | 江苏瑞吉格泰油气工程有限公司 | Electric heating device for high-corrosion medium |
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2012
- 2012-05-24 CN CN201210164751.8A patent/CN103423858B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080001625A (en) * | 2006-06-28 | 2008-01-03 | 카템 게엠베하 운트 캄파니 카게 | Electric heating device |
| CN201138051Y (en) * | 2007-11-26 | 2008-10-22 | 海尔集团公司 | Water storage type electric water heater |
| CN201417003Y (en) * | 2008-11-19 | 2010-03-03 | 江苏裕兴电器有限公司 | Vertical energy-saving electric heater for ship |
| CN201364050Y (en) * | 2009-01-04 | 2009-12-16 | 济南张夏供水换热设备有限公司 | Highly-effective film-plating vortex type heat exchanger |
| CN201373549Y (en) * | 2009-01-20 | 2009-12-30 | 扬州市中日电器设备有限公司 | Novel fluid electric heater |
| CN102192586A (en) * | 2010-03-11 | 2011-09-21 | 中国核动力研究设计院 | High power density electric heating water tank for secondary pre-service hydraulic pressure test of steam generator |
| CN102331079A (en) * | 2011-07-20 | 2012-01-25 | 江苏瑞吉格泰油气工程有限公司 | Electric heating device for high-corrosion medium |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743087A (en) * | 2014-01-21 | 2014-04-23 | 华能无锡电热器材有限公司 | Energy saving heat exchanger |
| CN103743087B (en) * | 2014-01-21 | 2016-08-17 | 华能无锡电热器材有限公司 | Energy-saving heat exchanger |
| CN115468301A (en) * | 2022-10-26 | 2022-12-13 | 中国核动力研究设计院 | Generating set energy consumption device |
| CN117889556A (en) * | 2024-03-14 | 2024-04-16 | 山东宝玺节能燃料有限公司 | Energy-saving electric heating heat exchanger |
| CN117889556B (en) * | 2024-03-14 | 2024-05-10 | 山东宝玺节能燃料有限公司 | Energy-saving electric heating heat exchanger |
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| Publication number | Publication date |
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| CN103423858B (en) | 2016-08-03 |
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