CN104197771A - Flow equalization structure for air inlet of heat exchanger plate beam - Google Patents
Flow equalization structure for air inlet of heat exchanger plate beam Download PDFInfo
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- CN104197771A CN104197771A CN201410463503.2A CN201410463503A CN104197771A CN 104197771 A CN104197771 A CN 104197771A CN 201410463503 A CN201410463503 A CN 201410463503A CN 104197771 A CN104197771 A CN 104197771A
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Abstract
The invention discloses a flow equalization structure for an air inlet of a heat exchanger plate beam. The flow equalization structure comprises a shell composed of a cylinder, a round top and square bottom and a square box, and an open-type enlarging pipe is mounted in the shell. The open-type enlarging pipe is composed of a flow leading section and a flow guide section, so that air can be evenly distributed on the square section of the downstream after flowing through the cylinder; the upper end of the flow leading section is fixed on the inner wall of the cylinder and is capable of effectively dividing the air into a plurality of parts according to the design requirements and leading the air to a round top and square bottom circulation starting zone, and flow guide plates on the flow guide section evenly guide the air to different zones of the square box; a connecting mechanism is capable of adjusting the included angle between the flow leading section and the flow guide section as required. Technical problems that the air is unevenly distributed when flowing through the round top and square bottom structure and pressure loss is bigger and the like are solved, and the flow equalization structure has the advantages of saved materials, simple structure, convenience in processing and mounting and the like.
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, cylinder part and square chest parts need to be linked together, form thus the variable-diameter structure by circle change side, i.e. hemispherical dome structure.Nowadays, hemispherical dome structure has been widely used among the equipment in the fields 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 application widely in gas-gas, gas-vapour and solution-air heat exchange field.Consideration based on processing medium attribute and stringing economy, generally adopts cylindrical shape pipeline.But the medium import of welded plate type heat exchanger plate bundle is square or rectangle, thereby need to adopt hemispherical dome structural transition.How making the medium in circular pipe, evenly flow into each passage of square or rectangular slab bundle, is the comparison stubborn problem that this area faces.Because use the plate bundle of traditional hemispherical dome structure, in each passage, the skewness of gas flow weighing apparatus, seriously affects the performance of plate bundle heat exchange property, even also can cause the cracking behavior of plate bundle to destroy.
When gas enters hemispherical dome structure from circular flow channel, because causing gas, circulation area sudden enlargement there is strong turbulent mixture.When gas flow is during 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, thereby the mutual collision between aggravation gas particle, cause gas energy loss, cause the acute variation of gas velocity field simultaneously, cause gas at square chest porch fluid skewness, especially spend angles for four of square chest lower end 90, the dead band of gas flow often, when gas enters downstream square plate beam passage, acute variation due to gas velocity field, can cause plate Shu Zhendong, especially for high temperature gas medium, the thermal (temperature difference) stress that inhomogeneous velocity field also can cause plate bundle to bear is inconsistent, when serious, cause equipment failure, finally affected the safety and stability of whole equipment.
For prevent boundary layer separation, improve the distribution of gas, traditional solution is: lengthen the flow channel length of hemispherical dome structure, reduce 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, also can bring the increase of gas pressure drop and the reduction of heat transfer efficiency.Visible for improving the conventional method that hemispherical dome internal gas distributes, reducing equipment cost and installing space and improving distribution of gas effect is conflict body, can only between the two, accept or reject, and 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 below hemispherical dome round-corner transition district, and the operating cost of equipment is high.The welding job amount of water conservancy diversion steel plate is large simultaneously, and during maintenance, equipment must stop, and has certain dismounting difficulty.
Summary of the invention
The invention provides a kind of current equalizing structure for heat exchanger plate bundle gas access, gas is carried out to drainage and water conservancy diversion, reduce eddy current and the turbulent phenomenon of gas below hemispherical dome round-corner transition district, 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 that cylinder, hemispherical dome, square chest form, open type increaser is installed in described shell.
Described open type increaser is comprised of Drainage Section and diversion section, is provided with angle regulator and regulates 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 comprised of hinge and angle fixed bar; Drainage Section and the diversion section of this hinge links open type increaser, and the two ends of angle fixed bar are affixed with the surface of Drainage Section and diversion section respectively.
It is 10 °～20 ° that described angle regulator makes angle between Drainage Section and diversion section.
Described Drainage Section and diversion section are all comprised of some drainage plates and deflector.
Described drainage plate and deflector are respectively four.
The straight flange of described drainage plate and square chest is angle to be arranged, or the round-corner transition district positioned opposite of deflector and hemispherical dome.
Open type increaser of the present invention is comprised 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, can be effectively gas be divided into some parts by designing requirement, and is drained to the initial circulating area of hemispherical dome, the deflector of diversion section by gas uniform be guided to the regional of square chest.Angle regulator can be adjusted 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 problem such as the pressure loss is larger, has materials and economizes, simple in structure, 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 cutaway view of Fig. 2;
Fig. 4 is the B-B cutaway view of Fig. 2;
Fig. 5 is open type increaser structural representation of the present invention.
In figure, number:
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 increasers.
The specific embodiment
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, by cylinder 1, hemispherical dome 2, square chest 4, form shell of the present invention, open type increaser 10 is installed in this shell.Its middle open type increaser 10 is comprised of the Drainage Section 5 forming an angle and diversion section 6, described Drainage Section 5 by some preferably the identical drainage plate of 4 block-shaped size form, described diversion section 6 by some preferably the identical deflector of 4 block-shaped size form.Described drainage plate and deflector are rectangle or square sheet metal.
Described open type increaser 10 Drainage Sections 5 of stating can regulate by angle regulator with the angle of diversion section 6, described angle regulator is comprised of hinge 7 and angle fixed bar 8, by described hinge 7 for connecting drainage plate and deflector, two ends in every drainage plate and deflector junction arrange hinge 7, allow to rotate between drainage plate and deflector, described angle fixed bar 8 two ends are connected with baffle surface with drainage plate respectively, fixedly between drainage plate and deflector, angle is 10 °～20 °, when angle is too small, the gas that starts increaser outside 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 on the contrary the inhomogeneities distributing.Then vertical edge, the left and right of each drainage plate is interconnected and form open type increaser 10.
The upper end of open type increaser 10 Drainage Sections 5 is welded in to 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 inwalls and open type increaser diversion section 6 are welded, 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 angle to be arranged, or round-corner transition district 3 positioned opposite of deflector and hemispherical dome 2.Such structure is region, four right angles water conservancy diversion toward plate entrance by gas, makes gas uniform be distributed in whole plate gas access, reduces the flow dead in region, four right angles; Due to deflector and round-corner transition district positioned opposite, can reduce gas and in round-corner transition district, produce the phenomenon of contour-stripped simultaneously, reduce backflow phenomenon, reduce the energy loss causing due to eddy current.
The effect of open type increaser 10 Drainage Sections 5 is that the gas in circular flow channel is divided into some parts or 5 parts, and is drained in hemispherical dome 2 runners; The effect of open type increaser 10 diversion sections 6 is the regionals that are guided to square chest 4 that are drained to the gas uniform after hemispherical dome 2 runners.Under the double action of Drainage Section 5 and diversion section 6, avoided the gas that causes due to circulation area sudden enlargement turbulent flow strongly, also avoided the surface of solids in boundary layer and hemispherical dome round-corner transition district 3 that generation eddy current in below, Er round-corner transition district occurs to depart from.When gas enters into after hemispherical dome 2 under the effect of open type increaser 10 Drainage Section 5 drainage plates, the gas of its middle open type increaser 10 interior gas flows is diffused into the central area of square chest 4 entrances by the flaring effect of increaser, gas at open type increaser 10 outer gas flows is guided to each region, right angle of square chest 4 entrances by the effect of deflector, finally make the distribution of gas obtain evenly, the pressure loss is reduced.
The present invention has the distribution of uniform gas in hemispherical dome structure, and the flow of balanced gas in each passage of plate bundle supplied with, and reduces local turbulent flow and eddy current, reduces pressure loss, ensures the advantage that subsequent technique is implemented.The present invention is not only simple in structure, and convenient disassembly, is a kind of direct, economic flow field prioritization scheme.
Claims (7)
1. for a current equalizing structure for heat exchanger plate bundle gas access, comprise the shell that cylinder, hemispherical dome, square chest form, it is characterized in that: open type increaser (10) is installed in described shell.
2. a kind of current equalizing structure for heat exchanger plate bundle gas access according to claim 1, it is characterized in that: described open type increaser (10) is comprised of Drainage Section (5) and diversion section (6), between this Drainage Section (5) and diversion section (6), be provided with angle regulator and regulate angle between the two; It is upper that upper end, described Drainage Section (5) is fixed in 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).
3. a kind of current equalizing structure for heat exchanger plate bundle gas access according to claim 2, is characterized in that: described angle regulator is comprised of hinge (7) and angle fixed bar (8); Drainage Section (5) and the diversion section (6) of this hinge (7) link open type increaser (10), and the two ends of angle fixed bar (8) are affixed with the surface of Drainage Section (5) and diversion section (6) respectively.
4. a kind of current equalizing structure for heat exchanger plate bundle gas access according to claim 2, is characterized in that: it is 10 °～20 ° that described angle regulator makes angle between Drainage Section (5) and diversion section (6).
5. a kind of current equalizing structure for heat exchanger plate bundle gas access according to claim 2, is characterized in that: described Drainage Section (5) and diversion section (6) are all comprised of some drainage plates and deflector.
6. a kind of current equalizing structure for heat exchanger plate bundle gas access according to claim 5, is characterized in that: described drainage plate and deflector are respectively four.
7. a kind of current equalizing structure for heat exchanger plate bundle gas access according to claim 6, it is characterized in that: the straight flange of described drainage plate and square chest (4) is angle to be arranged, or round-corner transition district (3) positioned opposite of deflector and hemispherical dome (2).
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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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| CN104197771B CN104197771B (en) | 2016-01-20 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104896505A (en) * | 2015-06-30 | 2015-09-09 | 山东旺泰科技有限公司 | Uniform smoke distributing structure of smoke inlet of air preheater |
| CN104930540A (en) * | 2015-06-30 | 2015-09-23 | 山东旺泰科技有限公司 | Diversion structure of smoke inlet of air preheater |
| 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 heat exchanger head |
| CN109373798A (en) * | 2018-11-07 | 2019-02-22 | 甘肃蓝科石化高新装备股份有限公司 | A kind of gas access even distribution device for heat-exchangers of the plate type |
| CN110307420A (en) * | 2019-06-28 | 2019-10-08 | 岭南中药饮片有限公司 | Side turns round splce |
| CN111043888A (en) * | 2019-12-26 | 2020-04-21 | 思安新能源股份有限公司 | Combined heat storage unit |
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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 |
| JP4031393B2 (en) * | 2003-05-26 | 2008-01-09 | 日産ディーゼル工業株式会社 | 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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2014
- 2014-09-12 CN CN201410463503.2A patent/CN104197771B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896505A (en) * | 2015-06-30 | 2015-09-09 | 山东旺泰科技有限公司 | Uniform smoke distributing structure of smoke inlet of air preheater |
| CN104930540A (en) * | 2015-06-30 | 2015-09-23 | 山东旺泰科技有限公司 | Diversion structure of smoke inlet of air preheater |
| 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 heat exchanger head |
| CN109373798A (en) * | 2018-11-07 | 2019-02-22 | 甘肃蓝科石化高新装备股份有限公司 | A kind of gas access even distribution device for heat-exchangers of the plate type |
| CN109373798B (en) * | 2018-11-07 | 2024-05-14 | 甘肃蓝科石化高新装备股份有限公司 | Gas inlet uniform distribution device for plate heat exchanger |
| CN110307420A (en) * | 2019-06-28 | 2019-10-08 | 岭南中药饮片有限公司 | Side turns round splce |
| CN111043888A (en) * | 2019-12-26 | 2020-04-21 | 思安新能源股份有限公司 | Combined heat storage unit |
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| CN104197771B (en) | 2016-01-20 |
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