CN203024614U - Finned tube heat exchanger - Google Patents
Finned tube heat exchanger Download PDFInfo
- Publication number
- CN203024614U CN203024614U CN 201220676199 CN201220676199U CN203024614U CN 203024614 U CN203024614 U CN 203024614U CN 201220676199 CN201220676199 CN 201220676199 CN 201220676199 U CN201220676199 U CN 201220676199U CN 203024614 U CN203024614 U CN 203024614U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- tube
- vibrationproof bar
- heat
- shape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to a finned tube heat exchanger which is placed in a material changing water tank of a nuclear power plant passive waste heat removing system. The finned tube heat exchanger comprises a C-shaped vertical type tube bundle and anti-vibration strips which support and fix the heat exchanging tube bundle. The C-shaped vertical type tube bundle comprises a plurality of C-shaped heat exchanging tubes. A plurality of anti-vibration strip arranging zones are arranged in the C-shaped vertical type tube bundle. Cylindrical anti-vibration strips are arranged in the anti-vibration strip arranging zones. According to the finned tube heat exchanger, manufacturing cost and difficulty of the heat exchanger in the passive waste heat removing system of a pressurized water reactor nuclear power plant can be lowered, stress concentration conditions of a heat conducting pipe of the heat exchanger in operation can be effectively reduced, the probability of restraining of a heat conducting tube bundle and rusting of a heat conducting tube is lowered, and accordingly the risk that the heat conducting tube deforms and loses efficacy is lowered.
Description
Technical field
The present invention relates to field of pressurized water reactor nuclear, be specifically related to a kind of fin-tube heat exchanger that is applied to Passive residual heat removal system.
Background technology
Pressurized-water reactor nuclear power plant passive residual heat removal heat exchanger is the visual plant of Heat Discharging System of Chinese, formed with the vertical tube bank of " C " shape that is connected low head by the entrance end socket on top, the outlet end socket of bottom, tube bank is fixed by many rows vibrationproof bar, the vibrationproof bar allows pipe to do axial stretching, to absorb the pipe thermal expansion.Rear its tube side medium that comes into operation is a circuit cools agent, is the normal-temperature water in material-changing water tank outside pipe, the water extremely boiling of heating direct gradually of reloading of material-changing water tank after dropping into.
In PWR nuclear power plant, non-active remaining row's heat exchanger adopted in the past be the light pipe of nickel-base alloy as the boiling heat transfer unit, due to the requirement of heat transfer power, whole equipment size is huge, and has used a large amount of Ni-based tubing; Above-mentioned passive residual heat heat exchanger is as the exclusive equipment of safety, after coming into operation under accident conditions, the water that reloads in material-changing water tank is heated to rapidly boiling, cause tube bundle vibration, for preventing from vibrating the pipe wall abrasion that brings, above-mentioned passive residual heat heat exchanger is provided with array vibrationproof bar, and its machining accuracy and installation accuracy have been brought very large difficulty far above common core level heat exchanger to device fabrication; Equipment investment uses the initial stage simultaneously, and tube bank is added thermal expansion by a circuit cools agent, and the temperature of tube bank restraining structure is still same with the water that reloads, and this expansion that causes restraining can only be absorbed by the tube bank strain, and it is excessive that this can cause restraining stress on the one hand; The probability of this equipment investment operation and time all seldom, in long-time standing situation, might can't slide by designing requirement due to corrosion between tube bank and vibrationproof bar in addition, and the thermal expansion of tube bank can't absorb, and finally causes tube bundle deformation to be scrapped.
Summary of the invention
The technical problem that will solve of the present invention is to provide a kind of Heat Discharging System of Chinese that goes in pressurized-water reactor nuclear power plant, size that can significantly less heat exchanger, and improve the stress state of heat transfering tube of heat exchanger, reduce the fin-tube heat exchanger of manufacture difficulty and overall cost.
In order to solve the problems of the technologies described above, technical scheme of the present invention is, a kind of fin-tube heat exchanger, it is placed in the material-changing water tank of nuclear power station passive residual heat removal system, the vibrationproof bar that comprises the vertical tube bank of " C " shape, support and fixing described heat-exchanging tube bundle, it is made of the vertical tube bank of described " C " shape some " C " shape heat exchanger tubes, is provided with several vibrationproof bars in the vertical tube bank of described " C " shape and arranges the district; Described vibrationproof bar is arranged in the district and is furnished with cylindrical vibrationproof bar.
Described " C " shape heat exchanger tube circumferentially is provided with vertically the evenly fin of interval extension.
Described vibrationproof bar comprises horizontal vibrationproof bar and vertical vibrationproof bar;
Described horizontal vibrationproof bar is arranged in the horizontal clearance of " C " shape heat exchanger tube, and described vertical vibrationproof bar is arranged in the vertical gap of " C " shape heat exchanger tube; Described horizontal vibrationproof bar and vertical vibrationproof bar all with described " C " shape heat exchanger tube.
Of the present inventionly can reduce in pressurized-water reactor nuclear power plant the manufacturing cost of heat exchanger and difficulty in Heat Discharging System of Chinese, effectively reduce the stress of heat transfering tube of heat exchanger in service and concentrate situation, and reduce the heating surface bank constraint probability real with the heat-transfer pipe rust, thereby reduce the risk of heating surface bank deformation failure.
Description of drawings
Fig. 1 is the heat exchanger schematic diagram that is applied in Heat Discharging System of Chinese;
Fig. 2 is the partial schematic diagram of a kind of fin-tube heat exchanger of the present invention vibrationproof bar layout area in the tube bank horizontal zone;
Fig. 3 is the partial schematic diagram of a kind of fin-tube heat exchanger of the present invention vibrationproof bar layout area in tube bank is vertically regional.
In figure: 1-entrance end socket, 2-heat exchanger tube sheet, 3-heat exchanger frame, the vertical tube bank of 4-" C " shape, 401-restrains horizontal zone, the 402-tube bank is the zone vertically, 403-" C " shape heat exchanger tube, 404-fin, 5-vibrationproof bar is arranged the district, the horizontal vibrationproof bar of 501-, the vertical vibrationproof bar of 502-, 6-exports end socket.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described further.
As shown in Figure 1, pressurized-water reactor nuclear power plant passive residual heat removal heat exchanger is located in material-changing water tank, and it comprises the entrance end socket 1 on top, outlet end socket 6 and " C " shape vertical heat exchanging tube bank 4 that is connected low head of bottom; Described " C " shape vertical heat exchanging tube bank 4 comprises " C " shape heat exchanger tubes of several different sizes, this several " C " shape heat exchanger tube
Tube bank is fixed by many rows vibrationproof bar, and the vibrationproof bar allows pipe to do axial stretching, to absorb the pipe thermal expansion.After coming into operation, the interior medium of its tube side is a circuit cools agent, is the normal-temperature water in material-changing water tank outside pipe, the water extremely boiling of heating direct gradually of reloading of material-changing water tank after dropping into.
A kind of fin-tube heat exchanger of the present invention, the material-changing water tank that it is placed in nuclear power station passive residual heat removal system comprises the vertical tube bank 4 of " C " shape, supports and the vibrationproof bar of fixing described heat-exchanging tube bundle, it is characterized in that:
The vertical tube bank 4 of described " C " shape comprises to be restrained horizontal zone 401 and restrains vertically zone 402, and it is by some " C " shape heat exchanger tubes 403 formations, and described " C " shape heat exchanger tube 403 circumferentially is welded with vertically the evenly fin 404 of interval extension; Can adopt T-shaped finned tube as " C " shape heat exchanger tube 403; The vertical zone 402 of described tube bank horizontal zone 401 and tube bank is provided with several vibrationproof bars and arranges district 5;
Described vibrationproof bar is arranged in tube bank horizontal zone 401 and vertical regional 402 the vibrationproof bar of tube bank is arranged in district 5; Described vibrationproof bar comprises horizontal vibrationproof bar 501 and vertical vibrationproof bar 502, and this horizontal vibrationproof bar 501 and vertical vibrationproof bar 502 are column structure; Described horizontal vibrationproof bar 501 is arranged in the horizontal clearance of " C " shape heat exchanger tube 403, and contacts with " C " shape heat exchanger tube 403 that forms described horizontal clearance; Described vertical vibrationproof bar 502 is arranged in the vertical gap of " C " shape heat exchanger tube 403, and contacts with " C " shape heat exchanger tube 403 that forms described vertical gap.
A kind of fin-tube heat exchanger of the present invention can satisfy the heat transfer free convection requirement at input initial stage under less size, after the water that reloads outside T-shaped finned tube entered saturation boiling, its fin structure can improve boiling heat transfer coefficient 2-5 doubly simultaneously; Adopt simultaneously cylindrical vibrationproof bar that " C " shape heat exchanger tube 403 is retrained, and the position of arranging is optimized, contact owing to becoming between pipe and vibrationproof bar, therefore its corrosion causes the probability that pipe can't axial displacement greatly to reduce, and vibrationproof bar position after optimizing, can allow the more strain of pipe, thereby reduce the stress level of pipe, simultaneously because the abrasion resistance of T-shaped finned tube own is stronger, therefore thereby the installation accuracy that can reduce the vibrationproof bar requires to reduce manufacture difficulty.
Claims (3)
1. fin-tube heat exchanger, it is placed in the material-changing water tank of nuclear power station passive residual heat removal system, it is characterized in that: the vibrationproof bar that comprises the vertical tube bank of " C " shape, support and fixing described heat-exchanging tube bundle, it is made of the vertical tube bank of described " C " shape some " C " shape heat exchanger tubes, is provided with several vibrationproof bars in the vertical tube bank of described " C " shape and arranges the district; Described vibrationproof bar is arranged in the district and is furnished with cylindrical vibrationproof bar.
2. according to heat exchanger claimed in claim 1, it is characterized in that: described " C " shape heat exchanger tube circumferentially is provided with vertically the evenly fin of interval extension.
3. according to heat exchanger claimed in claim 1, it is characterized in that: described vibrationproof bar comprises horizontal vibrationproof bar and vertical vibrationproof bar;
Described horizontal vibrationproof bar is arranged in the horizontal clearance of " C " shape heat exchanger tube, and described vertical vibrationproof bar is arranged in the vertical gap of " C " shape heat exchanger tube; Described horizontal vibrationproof bar and vertical vibrationproof bar all with described " C " shape heat exchanger tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220676199 CN203024614U (en) | 2012-12-10 | 2012-12-10 | Finned tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220676199 CN203024614U (en) | 2012-12-10 | 2012-12-10 | Finned tube heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203024614U true CN203024614U (en) | 2013-06-26 |
Family
ID=48648593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220676199 Withdrawn - After Issue CN203024614U (en) | 2012-12-10 | 2012-12-10 | Finned tube heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203024614U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868371A (en) * | 2012-12-10 | 2014-06-18 | 中国核动力研究设计院 | Finned tube heat exchanger |
| CN104810068A (en) * | 2014-01-26 | 2015-07-29 | 上海核工程研究设计院 | Pressure container with fins on outer wall surface |
| CN105203287A (en) * | 2015-10-23 | 2015-12-30 | 上海核工程研究设计院 | Anti-vibration testing device for C-shaped tube bundle heat exchanger |
| WO2020077757A1 (en) * | 2018-10-17 | 2020-04-23 | 中广核工程有限公司 | Passive condenser for nuclear power plant |
-
2012
- 2012-12-10 CN CN 201220676199 patent/CN203024614U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868371A (en) * | 2012-12-10 | 2014-06-18 | 中国核动力研究设计院 | Finned tube heat exchanger |
| CN103868371B (en) * | 2012-12-10 | 2016-09-28 | 中国核动力研究设计院 | A kind of fin-tube heat exchanger |
| CN104810068A (en) * | 2014-01-26 | 2015-07-29 | 上海核工程研究设计院 | Pressure container with fins on outer wall surface |
| CN105203287A (en) * | 2015-10-23 | 2015-12-30 | 上海核工程研究设计院 | Anti-vibration testing device for C-shaped tube bundle heat exchanger |
| WO2020077757A1 (en) * | 2018-10-17 | 2020-04-23 | 中广核工程有限公司 | Passive condenser for nuclear power plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202485495U (en) | Shell-and-tube type heat exchanger of baffle of ADS (accelerator driven system) reactor | |
| CN203024614U (en) | Finned tube heat exchanger | |
| US10854344B2 (en) | Air-cooled heat exchanger and system and method of using the same to remove waste thermal energy from radioactive materials | |
| CN102564169A (en) | Baffle shell-and-tube heat exchanger for ADS (accelerator-driven system) reactor | |
| CN205759760U (en) | A kind of multi-fluid kettle type reboiler | |
| KR101436497B1 (en) | Passive decay heat removal system for liquid metal cooled reactors with enhanced natural circulation cooling capability using a helical type sodium-to-sodium heat exchanger | |
| CN103594127A (en) | Energy-saving nuclear power evaporator | |
| CN201443997U (en) | Heater for expansion heating network | |
| CN102538516A (en) | Horizontal fixed tube sheet type heat exchanging device and method | |
| JP2017538134A (en) | A system for passive heat removal from a pressurized water reactor through a steam generator. | |
| CN103063058A (en) | Novel horizontal cooler | |
| CN211929059U (en) | Passive heat exchanger of pressurized water reactor | |
| CN210271804U (en) | Emergent waste heat discharge system of water injection formula lead bismuth fast reactor | |
| CN201221906Y (en) | Column tube-type heat exchanger made of tantalum | |
| CN203518720U (en) | Crude oil heater | |
| JP3139856B2 (en) | Tube heat exchanger | |
| CN204034305U (en) | A kind of kettle type reboiler | |
| CN103267423A (en) | Heat exchanger in nuclear power plant containment vessel | |
| CN103868371A (en) | Finned tube heat exchanger | |
| CN203535968U (en) | Energy-saving nuclear power evaporator | |
| Liu et al. | Conceptual design of a freeze-tolerant Direct Reactor Auxiliary Cooling System for Fluoride-salt-cooled High-temperature Reactors | |
| CN202442617U (en) | Horizontal fixed tube plate type heat exchanger | |
| CN205079651U (en) | Novel integrated shell and tube type heat exchanger | |
| CN202973973U (en) | Overall expansion type heater for heating network | |
| KR101553888B1 (en) | Auto-damping device of heat exchanger for controlling air flow without electric power |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130626 Effective date of abandoning: 20160928 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |