CN105043144A - Double-side etching high-temperature and high-pressure printed circuit board heat exchanger - Google Patents
Double-side etching high-temperature and high-pressure printed circuit board heat exchanger Download PDFInfo
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- CN105043144A CN105043144A CN201510324622.4A CN201510324622A CN105043144A CN 105043144 A CN105043144 A CN 105043144A CN 201510324622 A CN201510324622 A CN 201510324622A CN 105043144 A CN105043144 A CN 105043144A
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Abstract
The invention relates to a double-side etching high-temperature and high-pressure printed circuit board heat exchanger. The double-side etching high-temperature and high-pressure printed circuit board heat exchanger is composed of a heat exchanging core, a flow equalizing section, a hot fluid inlet and outlet port and a cold fluid inlet and outlet port. The core is divided into an inlet section, a core heat exchanging section and an outlet section. According to the heat exchanger, runners are machined in the double sides of heat exchanging plates with a certain thickness in a photochemistry manner, a laser etching manner, a machining manner and the like. The first heat exchanging plate and the second heat exchanging plate are arranged in a spaced manner. A fusion type channel novel structure is adopted in an inlet distribution section, and fluid in the heat exchanger can be easily distributed more evenly. The heat exchanging efficiency of the heat exchanger can be improved, the thermal stress damage at an existing channel sharp corner is effectively avoided, the circulation section area of the heat exchanger is increased, and the compactness of the heat exchanger is improved; thermal stress distribution at the sharp corner is improved, plastic deformation caused by stress concentration is avoided, and the even distribution of fluid in the heat exchanger is improved; and the safety performance of the heat exchanger is improved, and the service life of the heat exchanger is prolonged.
Description
Technical field
The present invention relates to a kind of HTHP plate type heat exchanger used in the industry such as petrochemical industry, the energy, metallurgy, refrigeration, nuclear energy, in particular to a kind of HTHP printed circuit sheet heat exchanger of bilateral etched plate composition, the corrosion of photochemical etching, laser and machined and diffusion welding craft can be adopted to prepare.
Background technology
Plate type heat exchanger is widely used a kind of important heat transmission equipment in the industrial circles such as petrochemical industry, the energy, metallurgy, refrigeration, nuclear energy.Because manufacturing process is ripe, compactness is high, heat transfer efficiency high, occupy larger proportion at heat transmission equipment.In HTHP plate type heat exchanger, cold and hot two kinds of fluids carry out exchange heat by heat exchanger plates wall.For improving the object of heat exchange under meeting hyperbaric environment, usually at multi-form heat exchanger channels with alter flow direction, increase fluid flow-disturbing degree simultaneously.
Conventional panels fin heat exchanger is combined by brazing mode by substrate and fin, be mainly used in the temperature province of less than 600 DEG C, a lot of problem is there is when it is applied under high-temperature and high-pressure conditions, as: 1. soldering place is welding dissimilar materials, and the thermal expansion stress under hot conditions easily causes heat exchanger internal modification to losing efficacy; 2. the filling solder of brazing position is easily corroded, and causes heat exchanger to be revealed; Easily there is creep in 3. thinner fin, and then blocking portion passage under high-temperature and high-pressure conditions, reduces heat exchange efficiency and security.
The eighties in 20th century, Heatric company proposes a kind of printed circuit sheet heat exchanger, this heat exchanging plate of heat exchanger adopts etching mode one-body molded, polylith heat exchanger plates adopts Diffusion Welding to form core body, the heat exchanger of the method manufacture is always a kind of material, can not produce the residual stress because different materials thermal coefficient of expansion relation causes, bearing capacity is fine.According to runner form, existing printed circuit sheet heat exchanger is mainly divided into two classes, and a class core body adopts continuous passage structure, as straight passage structures, in a zigzag structure (US20060090887); Another kind of core body adopts separate type fin structure, as S type fin structure, aerofoil profile fin structure (US20090294113) etc.On the other hand, the design for printed circuit board (PCB) heat exchanger inlet and outlet structure does not also have disclosed research at present, adopts the integrated structure of engraving method not publish at present yet.
But, the heat exchanger plates of above-mentioned continuous passage printed circuit sheet heat exchanger is one-sided etching and processing, cross section of fluid channel is semicircle, when heat exchanger runs under high-temperature and high-pressure conditions, semicircle sharp corner can produce sizable thermal stress and concentrate, and makes material be in heat fatigue state, material plasticity can be caused time serious to be out of shape, affect heat exchange efficiency, also have a strong impact on use safety; Meanwhile, for the unreasonable layout of inlet channel, can make heat exchanger inner fluid skewness, cause heat exchanger resistance to increase, local temperature raises, thus affects the security of operation of heat exchanger.
Summary of the invention
For overcoming above-mentioned weak point, the object of this invention is to provide a kind of bilateral etching HTHP printed circuit board (PCB) heat exchanger structure form, heat exchanger plates bilateral all adopts method for chemially etching to etch different runner, the thermal stress that this mode can improve sharp corner in runner is concentrated, flow area can be increased, promote effective heat exchange area, improve heat exchange efficiency.Whole core body is furnished with different cold and hot fluid import and export, makes fluid be that countercurrent flow is arranged; Meanwhile, adopt fusion type passage to carry out fluid distribution in import department, each passage fluid is evenly distributed, heat exchanger resistance can be effectively reduced, improve heat exchange efficiency, ensure heat exchanger overall heat exchange performance.
Technical scheme of the present invention is achieved in that
Comprise the first heat exchanger plates, second heat exchanger plates, hot side-entrance, hot side outlet, cold side import, cold side outlet port, flow equalization section, it is equipped with the fusion type import of hot side and distributes runner and cold side fusion type import distribution runner, the processing channel cross section, upside of the first heat exchanger plates and the second heat exchanger plates is semicircle, processing channel cross section, downside is half elliptic, and semi-circular channel diameter is equal with half elliptic passage long axis length; The upside etched channels of the first heat exchanger plates, the second heat exchanger plates import dispensing section, outlet section and downside etched channels are arranged in the both sides of flow direction center line symmetry respectively, heat exchanger entirety is in countercurrent flow, fusion type fluid-dispensing structure is adopted at the first heat exchanger plates and the second heat exchanger plates entrance, first heat exchanger plates and the second heat exchanger plates are alternately arranged, connect flow-expanding section respectively in import and export position, the outer inlet/outlet pipe of flow-expanding section is Flange joint.
Bilateral etched channels on the first described heat exchanger plates and the second heat exchanger plates, its center is arranged in same axis or alternately.
First heat exchanger plates and the second heat exchanger plates inducer position adopt fusion type runner layout to carry out fluid distribution, core body leading portion flow-guiding channel is radial construction, fluid is divided into multiple flow and is advanced into core body stage casing, and two side liquid import and export positions are symmetrical about flow direction center line, core body is made to form counterflow configuration.
Described flow-expanding section is circumference excessive structural, imports and exports weld with heat exchanger core body.
Be fluid core heat transfer zone in the core body stage casing of heat exchanger, consider that engraving method exchange hot plate bilateral carries out etching convenience, straight channel or zigzag channel design can be processed in this region.
The present invention relative to the advantage of prior art and effect is:
1. thermal stress is reduced: bilateral etch structures makes the right angle at runner two tip realize seamlessly transitting, and effectively reduces thermal stress, avoids issuable plastic deformation thus.
2. improve flow uniformity: the fusion type intake channel of heat exchanger leading portion and back segment is arranged, effectively improve flow uniformity distribution.
3. reduce channel resistance: bilateral etched plate makes fluid be increased by the cross-sectional area of heat exchanger, the fluid working substance flow velocity under same traffic is reduced, contribute to reducing resistance, save power consumption.
4. increase effective heat transfer area: bilateral etched plate increases the contact area of two side liquids and solid, improve heat exchanger compactness.
In sum, the present invention has the following advantages:
1. the present invention can reduce sharp corner thermal stress;
2. the present invention can improving heat exchanging efficiency and reduce resistance;
3. the present invention can make the distribution of heat exchanger inner fluid more even;
4. the present invention can improve the compactness of heat exchanger, increases effective heat exchange area utilization rate.
Accompanying drawing explanation
Fig. 1 is heat exchanger overall structure schematic diagram of the present invention.
Fig. 2 (a) is the coaxial etch structures schematic diagram of veneer bilateral in the present invention.
Fig. 2 (b) is that in the present invention, veneer bilateral interlocks etch structures schematic diagram.
Fig. 3 is that in the present invention, schematic diagram is arranged in two side liquid core body runners and import.
Fig. 4 (a) is hot side liquid makeup of the imports schematic diagram in the present invention.
Fig. 4 (b) is cold-side fluid makeup of the imports schematic diagram in the present invention.
Fig. 5 (a) is the coaxial runner schematic diagram in a zigzag in heat exchanger core body stage casing in the present invention.
Fig. 5 (b) is the staggered runner schematic diagram in a zigzag in heat exchanger core body stage casing in the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
With reference to shown in Fig. 1, a kind of bilateral etching HTHP heat exchanger comprises: a core body 1, arrange by etched flow channels and be divided into three parts, core body leading portion 2 is import diversion section, core body stage casing 3, core body back segment 4 is for exporting diversion section, and hot side-entrance pipe 6 is connected to core body leading portion 2 with cold side outlet pipe 8 by flow-expanding section 5, hot side outlet pipe 7 is connected to core body back segment 4 with cold side inlet tube 9 by flow-expanding section 5, thus the core heat transfer zone ensureing section 3 is in the core countercurrent flow.
Shown in Fig. 2 (a), the first heat exchanger plates 11 and the second heat exchanger plates 12 both sides etched channels are on the same axis.
Shown in Fig. 2 (b), the first heat exchanger plates 11 and the second heat exchanger plates 12 both sides etched channels are that alternating expression is arranged.
With reference to shown in Fig. 3, hot fluid and cold fluid are countercurrent flow, and on the first heat exchanger plates 11 times side runner and the second heat exchanger plates 12, side runner is spliced to form hot side liquid passage, is spliced to form cold-side fluid passage on the upside of the first heat exchanger plates 11 with on the downside of the second heat exchanger plates 11.
Shown in Fig. 4 (a), the first heat exchanger plates 11 leading portion is fusion type import, and upside is etched to the fusion type import of semi-circular cross-section hot side and distributes passage 15; Downside is etched to the import of semi-elliptical cross-section cold side fusion type and distributes passage 16.The radiation direction of two wing passages is symmetrical about perpendicular.
Shown in Fig. 4 (b), the second heat exchanger plates 12 leading portion is import radiation structure, and upside is etched to the import of cold side fusion type and distributes passage 16; Downside is etched to the fusion type import of hot side and distributes passage 15.The radiation direction of two wing passages is symmetrical about perpendicular, simultaneously the second heat exchanger plates 12 and the structure of the first heat exchanger plates 11 in Mirror Symmetry.
Shown in Fig. 5 (a), section 3 in the core, the first heat exchanger plates 11 and the second heat exchanger plates 12 can be etched to coaxial passage in a zigzag.
Shown in Fig. 5 (b), section 3 in the core, the first heat exchanger plates 11 and the second heat exchanger plates 12 are etched to staggered passage in a zigzag, or other structures of continuous passage.
The process of heat exchanger work is: fluid enters each layer heat exchanger plates of heat exchanger by inlet tube, flow through the flow-guiding channel of entrance leading portion, fluid distributes in each passage of inflow and the opposite side fluid at heat exchanger plates interval, both sides carries out abundant heat exchange, finally by outlet outflow heat exchanger.
Claims (4)
1. a bilateral etching HTHP printed circuit sheet heat exchanger, comprise the first heat exchanger plates (11), second heat exchanger plates (12), hot side-entrance (6), hot side outlet (7), cold side import (8), cold side outlet port (9), flow equalization section (10), it is equipped with the fusion type import of hot side and distributes runner (15) and cold side fusion type import distribution runner (16), it is characterized in that, first heat exchanger plates (11) and the processing channel cross section, upside of the second heat exchanger plates (12) are semicircle, processing channel cross section, downside is half elliptic, semi-circular channel diameter is equal with half elliptic passage long axis length, the upside etched channels of the first heat exchanger plates (11), the second heat exchanger plates (12) import dispensing section, outlet section and downside etched channels are arranged in the both sides of flow direction center line symmetry respectively, heat exchanger entirety is in countercurrent flow, fusion type fluid-dispensing structure is adopted at the first heat exchanger plates (11) and the second heat exchanger plates (12) entrance, first heat exchanger plates (11) and the second heat exchanger plates (12) are alternately arranged, connect flow-expanding section respectively in import and export position, the outer inlet/outlet pipe of flow-expanding section is Flange joint.
2. bilateral etches HTHP printed circuit sheet heat exchanger according to claim 1, it is characterized in that: the bilateral etched channels on described the first heat exchanger plates (11) and the second heat exchanger plates (12), its center is arranged in same axis or alternately.
3. bilateral etches HTHP printed circuit sheet heat exchanger according to claim 1, it is characterized in that: the first heat exchanger plates (11) and the second heat exchanger plates (12) inducer position adopt fusion type runner layout to carry out fluid distribution, core body leading portion (2) flow-guiding channel is radial construction, fluid is divided into multiple flow and is advanced into core body stage casing (3), and two side liquid import and export positions are symmetrical about flow direction center line, core body is made to form counterflow configuration.
4. bilateral etches HTHP printed circuit sheet heat exchanger according to claim 1, it is characterized in that: described flow-expanding section is circumference excessive structural, imports and exports weld with heat exchanger core body.
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| CN201510324622.4A CN105043144A (en) | 2015-06-12 | 2015-06-12 | Double-side etching high-temperature and high-pressure printed circuit board heat exchanger |
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| CN106403688A (en) * | 2016-10-31 | 2017-02-15 | 航天海鹰(哈尔滨)钛业有限公司 | Novel heat exchanger core |
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| CN106839832A (en) * | 2017-01-23 | 2017-06-13 | 中国科学技术大学 | A kind of bend flow channel heat exchanger in the thermodynamic cycle for supercritical fluid |
| CN106895725A (en) * | 2017-03-09 | 2017-06-27 | 中国科学院上海高等研究院 | A kind of printed circuit board fused salt heat exchanging device of doubling plate arrangement |
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| CN107796249A (en) * | 2016-08-31 | 2018-03-13 | 浙江嘉熙科技有限公司 | Phase transformation suppresses heat transfer plate and its manufacture method |
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| CN106370043A (en) * | 2016-10-31 | 2017-02-01 | 航天海鹰(哈尔滨)钛业有限公司 | Novel heat exchanger core |
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| CN106839833A (en) * | 2017-03-09 | 2017-06-13 | 中国科学院上海高等研究院 | A kind of printed circuit board fused salt gas heat exchanger |
| CN106839833B (en) * | 2017-03-09 | 2019-12-10 | 中国科学院上海高等研究院 | Printed circuit board formula fused salt gas heat exchanger |
| CN107024134A (en) * | 2017-04-20 | 2017-08-08 | 中国科学院工程热物理研究所 | Heat exchanger plates for printed circuit sheet heat exchanger |
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Application publication date: 20151111 |