CN104197771B - A kind of current equalizing structure for heat exchanger plate bundle gas access - Google Patents
A kind of current equalizing structure for heat exchanger plate bundle gas access Download PDFInfo
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- CN104197771B CN104197771B CN201410463503.2A CN201410463503A CN104197771B CN 104197771 B CN104197771 B CN 104197771B CN 201410463503 A CN201410463503 A CN 201410463503A CN 104197771 B CN104197771 B CN 104197771B
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Abstract
The invention discloses a kind of current equalizing structure for heat exchanger plate bundle gas access, comprise the shell of cylinder, hemispherical dome, square chest composition, open type increaser is installed in described shell.Open type increaser is made up of Drainage Section and diversion section, can make gas flow after cylinder, be uniformly distributed in the square-section in downstream.Cylinder inner wall is fixed in the upper end of Drainage Section, effectively gas can be divided into some parts by designing requirement, and is drained to the initial circulating area of hemispherical dome, and gas uniform is guided to the regional of square chest by the deflector of diversion section.Bindiny mechanism can adjust the angle between Drainage Section and diversion section as required.The invention solves the skewness that gas flow exists when hemispherical dome structure, the technical problems such as the pressure loss is larger, have materials and economize, structure is simple, processes the advantages such as easy for installation.
Description
Technical field
The invention belongs to Thermal Power Engineering hydrodynamics and plate heat exchanger applications technical field, relate to a kind of hemispherical dome structure of gas flow equalization.
Background technology
In some early stage food and powder equipment, due to technological requirement, need cylinder part and square chest parts to link together, formed by the variable-diameter structure of circle change side thus, i.e. hemispherical dome structure.Nowadays, hemispherical dome structure has been widely used among the equipment in the field such as food machinery and petrochemical industry, metallurgy, environmental protection.
In recent years, along with the development of welded plate type heat exchanger technology, large number quipments has had in gas-gas, gas-vapour and solution-air field of heat exchange to be applied widely.Based on the consideration of processing medium attribute and stringing economy, generally adopt cylindrical shape pipeline.But the medium entrance of welded plate type heat exchanger plate bundle is square or rectangle, thus need to adopt hemispherical dome structural transition.How making the medium in circular pipe, evenly flow into each passage that is square or rectangular slab bundle, is that of facing in this area compares stubborn problem.Because use the plate bundle of traditional hemispherical dome structure, in each passage, the skewness weighing apparatus of gas flow, seriously affects the performance of plate bundle heat exchange property, the cracking behavior of plate bundle even also can be caused to destroy.
When gas enters hemispherical dome structure from circular flow channel, because circulation area sudden enlargement causes gas that strong turbulent mixture occurs.When gas flow is through hemispherical dome starting point round-corner transition district, the surface of solids in boundary layer and round-corner transition district is separated, and produce eddy current in disengaging place, thus the mutual collision between aggravation gas particle, gas energy is caused to lose, cause the acute variation of gas velocity field simultaneously, cause gas uneven at square chest porch fluid distrbution, especially four 90 degree of angles of square chest lower end, the dead band of gas flowing often, when gas enters downstream square plate beam passage, due to the acute variation of gas velocity field, plate Shu Zhendong can be caused, especially for high temperature gas medium, the thermal (temperature difference) stress that uneven velocity field also can cause plate bundle to bear is inconsistent, equipment failure is caused time serious, finally have impact on the safety and stability of whole equipment.
In order to prevent the separation in boundary layer, improve the distribution of gas, traditional solution is: the flow channel length lengthening hemispherical dome structure, reduces the sudden expansion angle between circular flow channel and square runner.So will cause the increase of device fabrication cost and the expansion of installing space.And along with the growth of hemispherical dome flow channel length, the increase of gas pressure drop and the reduction of heat transfer efficiency also can be brought.Visible for improving the conventional method of hemispherical dome internal gas distribution, reducing equipment cost and installing space and improving distribution of gas effect is conflict body, can only accept or reject between, cannot get both.
CN103322833A patent arranges water conservancy diversion steel plate in hemispherical dome and second line of a couplet square chest, and hemispherical dome entrance and second line of a couplet square chest are isolated into not connected 5 or some gas flows.There is larger vortex in this patent, gas energy loss is large, and the operating cost of equipment is high below hemispherical dome round-corner transition district.The welding job amount of water conservancy diversion steel plate is large simultaneously, and during maintenance, equipment must stop, and there is certain dismounting difficulty.
Summary of the invention
The invention provides a kind of current equalizing structure for heat exchanger plate bundle gas access, drainage and water conservancy diversion are carried out to gas, reduce the eddy current of gas below hemispherical dome round-corner transition district and turbulent phenomenon, reduce the pressure loss.
The present invention is achieved through the following technical solutions above-mentioned technical purpose:
For a current equalizing structure for heat exchanger plate bundle gas access, comprise the shell of cylinder, hemispherical dome, square chest composition, open type increaser is installed in described shell.
Described open type increaser is made up of Drainage Section and diversion section, is provided with angle regulator adjustment angle between the two between this Drainage Section and diversion section; Upper end, described Drainage Section is fixed on described cylinder, and described diversion section is fixed in the round-corner transition district of hemispherical dome by location guide.
Described angle regulator is made up of hinge and angle fixed bar; The Drainage Section of this hinge links open type increaser and diversion section, and the two ends of angle fixed bar are affixed with the surface of Drainage Section and diversion section respectively.
Described angle regulator makes angle between Drainage Section and diversion section be 10 ° ~ 20 °.
Described Drainage Section and diversion section are all made up of some pieces of drainage plates and deflector.
Described drainage plate and deflector are respectively four pieces.
The straight flange of described drainage plate and square chest is that angle is arranged, or the round-corner transition district of deflector and hemispherical dome is positioned opposite.
Open type increaser of the present invention is made up of Drainage Section and diversion section, can make gas flow after cylinder, be uniformly distributed in the square-section in downstream.Cylinder inner wall is fixed in the upper end of Drainage Section, effectively gas can be divided into some parts by designing requirement, and is drained to the initial circulating area of hemispherical dome, and gas uniform is guided to the regional of square chest by the deflector of diversion section.Angle regulator can adjust the angle between Drainage Section and diversion section as required.The invention solves the skewness that gas flow exists when hemispherical dome structure, the technical problems such as the pressure loss is larger, have materials and economize, structure is simple, processes the advantages such as easy for installation.
Accompanying drawing explanation
Fig. 1 is three-dimensional structure diagram of the present invention;
Fig. 2 is top view of the present invention;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the B-B sectional view of Fig. 2;
Fig. 5 is open type increaser structural representation of the present invention.
Number in figure:
1. cylinder 2. hemispherical dome 3. hemispherical dome round-corner transition district 4. square chest 5. drainage plate 6. deflector 7. hinge 8. angle fixed bar 9. location guide 10. open type increaser.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention and beneficial effect thereof are further illustrated.
Consult shown in Fig. 1 to Fig. 5: a kind of current equalizing structure for heat exchanger plate bundle gas access, form shell of the present invention by cylinder 1, hemispherical dome 2, square chest 4, open type increaser 10 is installed in this shell.Its middle open type increaser 10 is made up of the Drainage Section 5 formed an angle and diversion section 6, and described Drainage Section 5 is made up of the some pieces of drainage plates that preferably 4 block-shaped sizes are identical, and described diversion section 6 is made up of the some pieces of deflectors that preferably 4 block-shaped sizes are identical.Described drainage plate and deflector are rectangle or square sheet metal.
Described open type increaser 10 Drainage Section 5 of stating can be regulated by angle regulator with the angle of diversion section 6, described angle regulator is made up of hinge 7 and angle fixed bar 8, described hinge 7 is used for connecting drainage plate and deflector, at the two ends of every block drainage plate and deflector junction, hinge 7 is set, allow to rotate between drainage plate and deflector, described angle fixed bar 8 two ends are connected with drainage plate and baffle surface respectively, fixing angle between drainage plate and deflector is 10 ° ~ 20 °, when angle is too small, the gas started outside increaser can not be guided to the dead band, four right angles of plate entrance effectively, when angle is excessive, gas can produce flow dead below the projection of deflector, has increased the weight of the inhomogeneities distributed on the contrary.Then vertical for the left and right of each drainage plate edge is interconnected composition open type increaser 10.
The upper end of open type increaser 10 Drainage Section 5 is welded in cylinder 1 inwall, deflector is relative with the round-corner transition district 3 of hemispherical dome 2 respectively simultaneously, then with location guide 9, hemispherical dome round-corner transition district 3 inwall is welded with open type increaser diversion section 6, be finally welded and fixed cylinder 1 and hemispherical dome 2 and square chest 4.
The straight flange of described drainage plate and square chest 4 is that angle is arranged, or the round-corner transition district 3 of deflector and hemispherical dome 2 is positioned opposite.Such structure, by four the rectangular area water conservancy diversion of gas toward plate entrance, makes gas uniform be distributed in whole plate gas access, reduces the flow dead of four rectangular area; Simultaneously because deflector is positioned opposite with round-corner transition district, can reduce gas produces contour-stripped phenomenon in round-corner transition district, minimizing backflow phenomenon, reduces the energy loss because eddy current causes.
The effect of open type increaser 10 Drainage Section 5 is that the gas in circular flow channel is divided into some parts or 5 parts, and is drained in hemispherical dome 2 runner; The effect of open type increaser 10 diversion section 6 is regionals being guided to square chest 4 of the gas uniform after being drained to hemispherical dome 2 runner.In Drainage Section 5 with under the double action of diversion section 6, avoid the gas caused due to circulation area sudden enlargement strongly turbulent, the surface of solids that it also avoid boundary layer and hemispherical dome round-corner transition district 3 occurs depart from and produce eddy current below round-corner transition district.After gas enters into hemispherical dome 2 under the effect of open type increaser 10 Drainage Section 5 drainage plate, in its middle open type increaser 10, the gas of gas flow is diffused into the central area of square chest 4 entrance by the flaring effect of increaser, be guided to each rectangular area of square chest 4 entrance at the gas of open type increaser 10 primary gas flow duct by the effect of deflector, finally made that the distribution of gas obtains evenly, the pressure loss is reduced.
The present invention has the distribution of uniform gas in hemispherical dome structure, and the flow supply of balanced gas in each passage of plate bundle, reduces local turbulent and eddy current, reduce pressure loss, ensure the advantage that subsequent technique is implemented.The present invention not only structure is simple, and convenient disassembly, is directly a kind of, economic flow fieldoptimization scheme.
Claims (6)
1., for a current equalizing structure for heat exchanger plate bundle gas access, comprise the shell of cylinder, hemispherical dome, square chest composition, it is characterized in that: open type increaser (10) is installed in described shell; Described open type increaser (10) is made up of Drainage Section (5) and diversion section (6), is provided with angle regulator adjustment angle between the two between this Drainage Section (5) and diversion section (6); Described Drainage Section (5) upper end is fixed on described cylinder (1), and described diversion section (6) is fixed in the round-corner transition district (3) of hemispherical dome (2) by location guide (9).
2. a kind of current equalizing structure for heat exchanger plate bundle gas access according to claim 1, is characterized in that: described angle regulator is made up of hinge (7) and angle fixed bar (8); The Drainage Section (5) of this hinge (7) link open type increaser (10) and diversion section (6), and the two ends of angle fixed bar (8) are affixed with the surface of Drainage Section (5) and diversion section (6) respectively.
3. a kind of current equalizing structure for heat exchanger plate bundle gas access according to claim 1, is characterized in that: described angle regulator makes angle between Drainage Section (5) and diversion section (6) be 10 ° ~ 20 °.
4. a kind of current equalizing structure for heat exchanger plate bundle gas access according to claim 1, is characterized in that: described Drainage Section (5) and diversion section (6) are all made up of some pieces of drainage plates and deflector.
5. a kind of current equalizing structure for heat exchanger plate bundle gas access according to claim 4, is characterized in that: described drainage plate and deflector are respectively four pieces.
6. a kind of current equalizing structure for heat exchanger plate bundle gas access according to claim 5, it is characterized in that: the straight flange of described drainage plate and square chest (4) is that angle is arranged, or the round-corner transition district (3) of deflector and hemispherical dome (2) is positioned opposite.
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| CN201410463503.2A CN104197771B (en) | 2014-09-12 | 2014-09-12 | A kind of current equalizing structure for heat exchanger plate bundle gas access |
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| CN201410463503.2A CN104197771B (en) | 2014-09-12 | 2014-09-12 | A kind of current equalizing structure for heat exchanger plate bundle gas access |
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| CN104197771A CN104197771A (en) | 2014-12-10 |
| CN104197771B true CN104197771B (en) | 2016-01-20 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104930540B (en) * | 2015-06-30 | 2017-07-28 | 山东旺泰科技有限公司 | The flow-guiding structure of air preheater smoke inlet |
| CN104896505B (en) * | 2015-06-30 | 2017-07-28 | 山东旺泰科技有限公司 | The even gas distribution structure of air preheater smoke inlet |
| CN105414893A (en) * | 2015-12-04 | 2016-03-23 | 武汉钢铁(集团)公司 | Manufacturing method for round-top and square-ground transition connector |
| CN106052468A (en) * | 2016-05-30 | 2016-10-26 | 安徽普瑞普勒传热技术有限公司 | End socket device of plate heat exchanger |
| CN108020113A (en) * | 2017-11-30 | 2018-05-11 | 中国商用飞机有限责任公司 | Plate fin type heat exchanger end socket |
| CN110307420A (en) * | 2019-06-28 | 2019-10-08 | 岭南中药饮片有限公司 | Side turns round splce |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS51148510U (en) * | 1975-05-23 | 1976-11-29 | ||
| JP3326883B2 (en) * | 1993-07-26 | 2002-09-24 | 日産自動車株式会社 | Gas turbine flow path structure |
| JP2004346919A (en) * | 2003-05-26 | 2004-12-09 | Nissan Diesel Motor Co Ltd | Egr cooler |
| CN103322833A (en) * | 2013-06-19 | 2013-09-25 | 上海宝钢节能技术有限公司 | Heat exchanger with high heat exchange efficiency and long service life |
| CN204115555U (en) * | 2014-09-12 | 2015-01-21 | 甘肃蓝科石化高新装备股份有限公司 | A kind of current equalizing structure for heat exchanger plate bundle gas access |
-
2014
- 2014-09-12 CN CN201410463503.2A patent/CN104197771B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51148510U (en) * | 1975-05-23 | 1976-11-29 | ||
| JP3326883B2 (en) * | 1993-07-26 | 2002-09-24 | 日産自動車株式会社 | Gas turbine flow path structure |
| JP2004346919A (en) * | 2003-05-26 | 2004-12-09 | Nissan Diesel Motor Co Ltd | Egr cooler |
| CN103322833A (en) * | 2013-06-19 | 2013-09-25 | 上海宝钢节能技术有限公司 | Heat exchanger with high heat exchange efficiency and long service life |
| CN204115555U (en) * | 2014-09-12 | 2015-01-21 | 甘肃蓝科石化高新装备股份有限公司 | A kind of current equalizing structure for heat exchanger plate bundle gas access |
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| CN104197771A (en) | 2014-12-10 |
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