CN102564206A - Grid type supporting baffling device of shell-and-tube heat exchanger - Google Patents
Grid type supporting baffling device of shell-and-tube heat exchanger Download PDFInfo
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- CN102564206A CN102564206A CN2012100372880A CN201210037288A CN102564206A CN 102564206 A CN102564206 A CN 102564206A CN 2012100372880 A CN2012100372880 A CN 2012100372880A CN 201210037288 A CN201210037288 A CN 201210037288A CN 102564206 A CN102564206 A CN 102564206A
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- exchanger tube
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Abstract
The invention discloses a grid type supporting baffling device of a shell-and-tube heat exchanger, which comprises supporting limiting rings fixedly connected with the inner wall of a heat exchanger shell. A plurality of grid plates are connected in a crossed manner in each supporting limiting ring to form a porous grid, heat exchange tubes penetrate through holes of each grid, outer walls of the heat exchange tubes closely contact with inner walls of the holes, and two ends of each grid plate are fixedly connected with the inner wall of the corresponding supporting limiting ring. By the aid of the grid type supporting baffle device, heat transfer efficiency can be effectively improved, resistance loss of a shell pass is reduced, vibration of the heat exchange tubes is avoided, and the service life of equipment is prolonged.
Description
Technical field:
The grid formula that the present invention relates to a kind of shell-and-tube heat exchanger supports baffle means; Be useful in industrial shell-and-tube heat exchanger structures such as oil, chemical industry, power, atomic energy, metallurgy, mainly act on the support of shell-and-tube heat exchanger heat exchanger tube and the disturbance of enhancing heat exchanger shell pass fluid etc.
Background technology:
Heat exchanger is with the equipment of the part heat transferred cold fluid of hot fluid, claims heat exchanger again.Heat exchanger is the common apparatus in chemical industry, oil, military project, iron and steel and other the many commercial plants, occupies critical role aborning.In order to improve the equipment heat transfer efficiency, people exchange heat pipe and have had research extensively and profoundly, and multiple efficient heat conducting tube is able to extensive use.But as augmentation of heat transfer research, the support baffle means of heat exchanger tube is also particularly important under every kind of medium and the operation operating mode.The support baffle means of heat exchanger tube is that the tube bank of exchange heat pipe plays a supportive role on the one hand, can change the shell side velocity of medium and the flow direction simultaneously, is beneficial to the shell-side fluid medium and is issued to turbulent flow at low flow velocity, increases shell side film heat transfer coefficient etc.Along with present equipment enlarging, the development of high-endization of manufacturing equipment, heat exchanger is also progressively to large-scale high-end development, and shell-and-tube heat exchanger heat exchanger tube supporting construction also should be toward high-end development.
Conventional tube shell heat exchanger heat exchanger tube supporting construction has segmental baffle structure and rod baffle at present.Segmental baffle structure heat exchanger characteristics: shell side medium fluid vertical current is crossed tube bank, the turbulent extent that the amplified medium fluid flows between pipe; Enhancing heat transfer; Improve heat transfer efficiency; Work to support heat exchanger tube simultaneously.Shortcoming is because MEDIA FLOW to perpendicular to heat exchanger tube, causes flow path resistance big; There are flow dead and leakage current, reduce heat-transfer effect; Be prone to vibrations, because deflection plate is sheet material boring processing and manufacturing, thinner thickness, vibration is prone to shear heat exchanger tube, causes heat exchanger tube to damage.Deflection rod heat exchanger (Rod baffle heat exchanger) is to be initiated by U.S. Philips Petroleum Co. in 1970.Its original intention is to design in order to improve the flow-induced vibration in the baffle heat exchanger; Its main feature is: shell side no longer is provided with deflection plate; And replace deflection plate by the baffling circle that rod baffle is formed; Both pipe was played a supportive role, convection cell plays perturbation action again, uses the purpose that reaches augmentation of heat transfer.But the manufacturing of rod baffle bracing ring structure all is rivet welding processing, and manufacture deviation is big, causes tube bank assembling difficulty bigger, and the rod baffle span is long simultaneously, and the strong point is few, poor rigidity, and easy the vibration can not reach effective support.
Summary of the invention:
For overcoming the defective of prior art; The object of the present invention is to provide a kind of grid formula of shell-and-tube heat exchanger to support baffle means, avoid the existing weak point of primary tube shell heat exchanger heat exchanger tube supporting construction, and the deficiency of large-scale shell-and-tube heat exchanger heat exchanger tube, major diameter heat exchanger tube and the support of water-bath type heat exchanger tube; Can effectively improve heat transfer efficiency; Reduce the shell side drag losses, avoid the generation of heat exchanger tube oscillation phenomenon, improve the service life of equipment cycle.
Technical solution problem of the present invention adopts following technical scheme:
A kind of grid formula of shell-and-tube heat exchanger supports baffle means, and it comprises:
The support stop collar that connects firmly with the heat exchanger shell inwall; In said support stop collar, form the grid of porous with many flase floor interconnections; Heat exchanger tube passes in the hole of said grid and the outer wall of said heat exchanger tube and the inwall formation support in said hole, and the inwall of the two ends of each said flase floor and said support stop collar connects firmly.
Design feature of the present invention also is:
Each said flase floor is provided with the slot of opening, pegs graft each other through said slot between wantonly two crossing flase floors and welds fixing.
The center distance L between wantonly two disjoint flase floors and the thickness P of each flase floor confirm through following formula:
L＝t×cosα/2；
P≤L-d; Wherein, P is than the little 1～3mm of difference of L-d;
In the above-mentioned formula: t is the tube pitch of heat exchanger tube, and α is the heat exchanger tube arrangement angle, and wherein equilateral triangle is arranged 60 °, 90 ° of square arrangement, and d is the heat exchanger tube external diameter.
The present invention utilizes the gap increases flase floor formation between the pipe bridge network or square net according to equilateral triangle between the shell-and-tube heat exchanger heat exchanger tube and square arrangement rule, effectively supports heat exchanger tube.
Beneficial effect of the present invention is embodied in:
1, the present invention compares with the baffle arrangement heat exchanger; The shell side MEDIA FLOW becomes lateral flow to being flowed by original vertical tube bundle, reduces the shell side flow path resistance, has improved the shell side velocity of medium; Reduced flow dead; Convection cell plays perturbation action again, uses the purpose that reaches augmentation of heat transfer, has played energy conservation and consumption reduction effects.
2, the present invention compares with segmental baffle structure heat exchanger; The segmental baffle structure is processed by steel plate boring, and the gap is very little between heat exchanger tube and the segmental baffle hole, along with device diameters increases; Segmental baffle thickness also increases thereupon, causes material and processing cost significantly to increase; If under the vibration occasion, use, cause vibration abrasion between the segmental baffle exchange heat pipe, heat exchanger tube produces to be sheared, and causes heat exchanger tube to damage.The gripper shoe thin thickness of grid type supportive grid of the present invention through strengthening the flase floor width, increases contact line length between heat exchanger tube and the grid, can effectively solve the heat exchanger tube vibration, reduces weight of equipment, reduces the apparatus processing amount, improves service life of equipment.
3, the present invention compares with rod baffle structure heat exchanger, and the accuracy of manufacture of rod baffle own is low, and error is big, and is little for the heat exchanger tube center distance, and the positioning difficulty of rod baffle own is big; Only there are 2 supports in single in addition rod baffle exchange heat pipe, and for large-scale diameter heat exchanger, stability of strutting system is poor.Grid type supportive grid of the present invention is to form through the numerical control retrofit; The accuracy of manufacture is high; Apparatus of the present invention form several rigidity rhombus (square) ringlets, every heat exchanger tube all is in rigidly fixes in the circle, form at circumferential 4 and fix; Effectively support heat exchanger tube, improve the stability of heat exchanger tube.
Description of drawings:
Fig. 1 is a structural representation of the present invention; Fig. 2 is the structural representation of single flase floor.
Label among the figure: 1 supports stop collar, 2 flase floors, 3 heat exchanger tubes, 4 heat exchanger shells, 5 slots.
Below pass through the specific embodiment, and combine accompanying drawing that the present invention is described further.
The specific embodiment:
Embodiment: combine Fig. 1,2; The grid formula of the shell-and-tube heat exchanger of present embodiment supports baffle means; It comprises: with the fixing support stop collar 1 of heat exchanger shell 4 inwalls welding; With the grid of many flase floors 2 interconnections formation porous, heat exchanger tube 3 passes in the hole of grid and the outer wall of heat exchanger tube 3 closely contacts with the inwall in hole in supporting stop collar 1, and the two ends of each flase floor 2 are fixing with the inwall welding of supporting stop collar 1.Said hole is diamond hole or square hole.
In specifically being provided with, shown in Figure 2, each flase floor 2 is provided with the slot 5 of opening, pegs graft each other through slot between wantonly two crossing flase floors and the intersection point welding is fixing.The center distance L between wantonly two disjoint flase floors and the thickness P of each flase floor can confirm through following formula, so that adopt the numerical control device retrofit.
L＝t×cosα/2；
P≤L-d; Wherein, P is than the little 1～3mm of difference of L-d;
In the above-mentioned formula: t is the tube pitch of heat exchanger tube, and α is the heat exchanger tube arrangement angle, and wherein equilateral triangle is arranged 60 °, 90 ° of square arrangement, and d is the heat exchanger tube external diameter.
Claims (3)
1. the grid formula of a shell-and-tube heat exchanger supports baffle means, it is characterized in that comprising:
The support stop collar (1) that connects firmly with heat exchanger shell (4) inwall; In said support stop collar (1), form the grid of porous with many flase floors (2) interconnection; Heat exchanger tube (3) passes in the hole of said grid and the outer wall of said heat exchanger tube (3) and the inwall formation support in said hole, and the inwall of the two ends of each said flase floor (2) and said support stop collar (1) connects firmly.
2. the grid formula of a kind of shell-and-tube heat exchanger according to claim 1 supports baffle means; It is characterized in that; Each said flase floor (2) is provided with the slot (5) of opening, pegs graft each other through said slot between wantonly two crossing flase floors and welds fixing.
3. the grid formula of a kind of shell-and-tube heat exchanger according to claim 1 supports baffle means, it is characterized in that, the center distance L between wantonly two disjoint flase floors and the thickness P of each flase floor confirm through following formula:
L＝t×cosα/2；
P≤L-d; Wherein, P is than the little 1～3mm of difference of L-d;
In the above-mentioned formula: t is the tube pitch of heat exchanger tube, and α is the heat exchanger tube arrangement angle, and wherein equilateral triangle is arranged 60 °, 90 ° of square arrangement, and d is the heat exchanger tube external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100372880A CN102564206A (en) | 2012-02-17 | 2012-02-17 | Grid type supporting baffling device of shell-and-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100372880A CN102564206A (en) | 2012-02-17 | 2012-02-17 | Grid type supporting baffling device of shell-and-tube heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102564206A true CN102564206A (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100372880A Pending CN102564206A (en) | 2012-02-17 | 2012-02-17 | Grid type supporting baffling device of shell-and-tube heat exchanger |
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| CN (1) | CN102564206A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767039A (en) * | 2016-12-15 | 2017-05-31 | 佛山科学技术学院 | Deflecting fence supports concave surface pipe pipe bundle heat exchanger |
| CN109798785A (en) * | 2017-11-17 | 2019-05-24 | 中国石油天然气股份有限公司 | Longitudinal baffle type heat exchanger |
| CN109990307A (en) * | 2017-05-11 | 2019-07-09 | 中国北方车辆研究所 | A kind of burner exhaust heat utilizes the optimum design method of heat-exchanger rig heat exchange structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05296680A (en) * | 1992-04-14 | 1993-11-09 | Toshiba Corp | Heat transfer tube supporting structural body for heat exchanger |
| CN2446483Y (en) * | 2000-08-15 | 2001-09-05 | 沈阳仪器仪表工艺研究所 | Deflecting rod corrugated pipe heat exchanger |
| CN2524205Y (en) * | 2001-09-04 | 2002-12-04 | 华东理工大学 | Corrugated steel band baffle heat exchanger |
| CN2802425Y (en) * | 2005-06-22 | 2006-08-02 | 郑州大学 | Molding reducing heat transfer pipe longitudinal flow shell heat exchanger |
| CN1834566A (en) * | 2006-02-28 | 2006-09-20 | 华南理工大学 | Grill bearing baffler of shell-and-tube heat exchanger |
| CN201772781U (en) * | 2010-09-06 | 2011-03-23 | 中广核工程有限公司 | Longitudinal flow heat exchanger |
| CN201964823U (en) * | 2011-01-28 | 2011-09-07 | 济南市压力容器厂 | Grid supporting type closed water cooler |
-
2012
- 2012-02-17 CN CN2012100372880A patent/CN102564206A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05296680A (en) * | 1992-04-14 | 1993-11-09 | Toshiba Corp | Heat transfer tube supporting structural body for heat exchanger |
| CN2446483Y (en) * | 2000-08-15 | 2001-09-05 | 沈阳仪器仪表工艺研究所 | Deflecting rod corrugated pipe heat exchanger |
| CN2524205Y (en) * | 2001-09-04 | 2002-12-04 | 华东理工大学 | Corrugated steel band baffle heat exchanger |
| CN2802425Y (en) * | 2005-06-22 | 2006-08-02 | 郑州大学 | Molding reducing heat transfer pipe longitudinal flow shell heat exchanger |
| CN1834566A (en) * | 2006-02-28 | 2006-09-20 | 华南理工大学 | Grill bearing baffler of shell-and-tube heat exchanger |
| CN201772781U (en) * | 2010-09-06 | 2011-03-23 | 中广核工程有限公司 | Longitudinal flow heat exchanger |
| CN201964823U (en) * | 2011-01-28 | 2011-09-07 | 济南市压力容器厂 | Grid supporting type closed water cooler |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767039A (en) * | 2016-12-15 | 2017-05-31 | 佛山科学技术学院 | Deflecting fence supports concave surface pipe pipe bundle heat exchanger |
| CN109990307A (en) * | 2017-05-11 | 2019-07-09 | 中国北方车辆研究所 | A kind of burner exhaust heat utilizes the optimum design method of heat-exchanger rig heat exchange structure |
| CN109798785A (en) * | 2017-11-17 | 2019-05-24 | 中国石油天然气股份有限公司 | Longitudinal baffle type heat exchanger |
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Application publication date: 20120711 |