CN103486882B - One has temperature controlling function disk circular ring type deflection plate floating head heat exchanger - Google Patents
One has temperature controlling function disk circular ring type deflection plate floating head heat exchanger Download PDFInfo
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- CN103486882B CN103486882B CN201310447514.7A CN201310447514A CN103486882B CN 103486882 B CN103486882 B CN 103486882B CN 201310447514 A CN201310447514 A CN 201310447514A CN 103486882 B CN103486882 B CN 103486882B
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Abstract
The present invention relates to one and there is temperature controlling function disk circular ring type deflection plate floating head heat exchanger, comprise housing, it is characterized in that: in housing, be also furnished with the central passage that inwall is provided with thermal insulation layer, one end of central passage is stretched in head cavity, the other end is connected with tube side fluid cavity, central passage butterfly valve is provided with in central passage, the tube side fluid of the head cavity entered from tube-side inlet also enters heat exchanger tube via the tube side butterfly valve being positioned at head cavity simultaneously and enters tube side fluid cavity along heat exchanger tube, also be provided with at least a slice disc and donut and at least a slice disk deflection plate in housing simultaneously.The present invention has following beneficial effect: the coefficient of heat transfer that effectively improve heat exchanger, reduces heat exchange area, reduces the manufacturing cost of equipment; Significantly reduce the circulating resistance of shell-side fluid, reduce the power cost in heat exchanger running; Effectively ensure that the steady-state operation of this heat exchanger upstream device.
Description
Technical field
The present invention relates to a kind of heat exchanger.
Background technology
Along with country progressively improves the requirement of low-carbon energy-saving, the mode of production of the rough formula of chemical industry is more and more not suitable with the demand for development of modern industry, and a lot of research unit and chemical enterprise have done a lot of improvement with regard to how improving whole factory's efficiency aspect to existing chemical process.Heat recovery wherein in chemical products production process becomes a kind of effective way improving energy utilization rate.Heat exchanger is as the main equipment of waste heat recovery, and in chemical process flow, importance highlights all the more, and the quantity of heat exchanger accounts for chemical industry equipment used and reaches about 40% according to statistics, and its investment cost also reaches more than 20%.
Mainly there is following shortcoming in the heat exchanger used at present: under varying load condition, heat exchanger cannot keep steady-state operation; Tube side fluid again with shell-side fluid heat exchange after, its outlet temperature does not often reach design temperature, makes the upstream device of heat exchanger to keep steady-state operation.
Summary of the invention
The technical problem to be solved in the present invention makes heat exchanger can keep steady-state operation under the operating mode that load variations is larger.
In order to solve the problems of the technologies described above, technical scheme of the present invention there is provided one and has temperature controlling function disk circular ring type deflection plate floating head heat exchanger, comprise housing, head construction and floating head type tail structure is respectively equipped with at the two ends of housing, head cavity is provided with in head construction, the tube-side inlet be positioned on head construction is connected with head cavity, tube side fluid cavity spaced apart from each other and shell-side fluid cavity is provided with in floating head type tail structure, be positioned at shell side inlet on floating head type tail structure and tube side outlet is connected with shell-side fluid cavity and tube side fluid cavity respectively, shell-side fluid cavity is connected with the internal cavity of housing simultaneously, many heat exchanger tubes are furnished with in housing, heat exchanger tube is connected with head cavity and tube side fluid cavity respectively, housing is provided with shell-side outlet, go out from shell-side outlet after shell-side fluid enters housing by shell side inlet with after the tube side fluid heat exchange in heat exchanger tube, it is characterized in that: in housing, be also furnished with the central passage that inwall is provided with thermal insulation layer, one end of central passage is stretched in head cavity, the other end is connected with tube side fluid cavity, central passage butterfly valve is provided with in central passage, flow through central passage butterfly valve again after the tube side fluid of the head cavity entered from tube-side inlet is positioned at head cavity end via central passage enters central passage and enter tube side fluid cavity along central passage, in the process, the heat exchange of the tube side fluid in central passage and the shell-side fluid in housing is completely cut off by thermal insulation layer, the tube side fluid of the head cavity entered from tube-side inlet also enters via the tube side butterfly valve being positioned at head cavity after heat exchanger tube and shell-side fluid carry out heat exchange simultaneously and enters tube side fluid cavity, export from tube side after the tube side fluid going out central passage mixes with the tube side fluid going out heat exchanger tube in tube side fluid cavity and flow out, also be provided with at least a slice disc and donut and at least a slice disk deflection plate in housing simultaneously, disc and donut and disk deflection plate arrange vertically and the arranged direction of arranged direction and heat exchanger tube is perpendicular, the shell-side fluid flowed in housing is passed through by the middle through-hole of disc and donut, gap is there is between the edge of disk deflection plate and the inwall of housing, the shell-side fluid flowed in housing is only passed through by this gap.
Preferably, described disc and donut and described disk deflection plate interval are arranged.
Preferably, described central passage is arranged in the middle part in described housing.
Preferably, described heat exchanger tube is uniformly distributed along the circumference of described central passage.
The present invention has following beneficial effect:
The first, effectively improve the coefficient of heat transfer of heat exchanger, reduce heat exchange area, reduce the manufacturing cost of equipment;
The second, significantly reduce the circulating resistance of shell-side fluid, reduce the power cost in heat exchanger running;
Three, effectively avoid or alleviate the possibility that vibrations occur equipment, add the service life of equipment and reduce the bad probability of equipment brush;
Four, its temperature-control structure ensure that the stable operation of this heat exchanger under variable working condition condition;
Five, its temperature-control structure is the steady-state operation that equipment effectively ensure that this heat exchanger upstream device;
Six, floating head type structure effectively avoids the destruction that equipment thermal expansion causes.
Accompanying drawing explanation
Fig. 1 is the general structure schematic diagram with temperature controlling function disk circular ring type deflection plate floating head heat exchanger provided by the invention;
Fig. 2 is disc and donut schematic diagram;
Fig. 3 is disk deflection plate schematic diagram.
Detailed description of the invention
For making the present invention become apparent, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
As shown in Figure 1, one provided by the invention has temperature controlling function disk circular ring type deflection plate floating head heat exchanger, comprise housing 10, head construction 11 and floating head type tail structure 12 is respectively equipped with at the two ends of housing 10, head cavity is provided with in head construction 11, the tube-side inlet 1 be positioned on head construction 11 is connected with head cavity, tube side fluid cavity spaced apart from each other and shell-side fluid cavity is provided with in floating head type tail structure 12, be positioned at shell side inlet 8 on floating head type tail structure 12 and tube side outlet 9 is connected with shell-side fluid cavity and tube side fluid cavity respectively, shell-side fluid cavity is connected with the internal cavity of housing 10 simultaneously, many heat exchanger tubes 4 are furnished with in housing 10, heat exchanger tube 4 is connected with head cavity and tube side fluid cavity respectively, be provided with shell-side outlet 13 on the housing 10, go out from shell-side outlet 13 after tube side fluid heat exchange after shell-side fluid enters housing 10 by shell side inlet 8 and in heat exchanger tube 4, the central passage 5 that inwall is provided with thermal insulation layer is also furnished with in housing 10, central passage 5 is arranged in the middle part in housing 10, the circumference of heat exchanger tube 4 centrally passage 5 is uniformly distributed, one end of central passage 5 is stretched in head cavity, the other end is connected with tube side fluid cavity, central passage butterfly valve 2 is provided with in central passage 5, flow through central passage butterfly valve 2 again after the tube side fluid of the head cavity entered from tube-side inlet 1 is positioned at head cavity end via central passage 5 enters central passage 5 and enter tube side fluid cavity along central passage 5, in the process, tube side fluid in central passage 5 and the heat exchange of shell-side fluid being positioned at housing 10 is completely cut off by thermal insulation layer, the tube side fluid of the head cavity entered from tube-side inlet 1 also enters via the tube side butterfly valve 3 being positioned at head cavity after heat exchanger tube 4 carries out heat exchange with shell-side fluid simultaneously and enters tube side fluid cavity, export 9 from tube side after the tube side fluid going out central passage 5 mixes in tube side fluid cavity with the tube side fluid going out heat exchanger tube 4 to flow out, also be provided with multi-disc disc and donut 6 as shown in Figure 2 and multi-disc disk deflection plate 7 as shown in Figure 3 in housing 10 simultaneously, disc and donut 6 and disk deflection plate 7 are arranged vertically, and the arranged direction of arranged direction and heat exchanger tube 4 is perpendicular, and disc and donut 6 and disk deflection plate 7 interval are arranged, the edge of disc and donut 6 and the inwall of housing 10 interspace as far as possible less, the shell-side fluid flowed in housing 10 is only passed through by the middle through-hole of disc and donut 6, gap is there is between the edge of disk deflection plate 7 and the inwall of housing 10, the shell-side fluid flowed in housing 10 is only passed through by this gap.
The course of work with temperature controlling function disk circular ring type deflection plate floating head heat exchanger provided by the invention is:
Tube side fluid enters heat exchanger by tube-side inlet 1, respectively by central passage butterfly valve 2 and tube side butterfly valve 3, the tube side fluid flowing through tube side butterfly valve 3 enters the transmission of heat exchanger tube 4 generation heat different from shell-side fluid Yin Wendu, central passage 5 inwall is with one deck heat-barrier material, therefore the tube side fluid flowing through central passage 5 does not carry out heat exchange with shell-side fluid, cold by heat exchanger tube 4 and central passage 5, hot fluid mixes at heat exchanger afterbody, mixed tube side fluid temperature is design object temperature, last tube side fluid exports 9 outflow heat exchangers from tube side and enters next equipment.
Control heat exchanger shell pass and tube side circulation are imported and exported fluid temperature (F.T.) and are realized primarily of tube side butterfly valve 3 and central passage butterfly valve 5, all should flow through the operating condition design (during this heat exchanger maximum duty) of heat exchanger tube 4 by tube side fluid when design of heat exchanger, now tube side butterfly valve 3 should be full-gear, and central passage butterfly valve 2 should be full off state.When machine utilization reduces, if tube side fluid is still all by heat exchanger tube 4, shell-side fluid enters heat exchanger shell pass by shell side inlet 8, and carry out heat exchange through disc and donut 6 and disk deflection plate 7 baffling and tube side fluid, the shell-side fluid after exchange heat flows out from shell-side outlet 13.Because heat exchange area remains unchanged, the outlet temperature of tube side fluid will below or above (when hot fluid walks tube side, tube side outlet temperature is lower than design load; If type of thermal communication walks shell side, then tube side outlet temperature is higher than design load) design load, therefore need to regulate tube side butterfly valve 3 and central passage butterfly valve 2, with realize tube side fluid by a certain percentage flow by heat exchanger tube 4 and central passage 5, because heat exchange is not carried out in the tube side circulation flowing through central passage 5, mix with from heat exchanger tube 4 tube side fluid out, finally reach the tube side fluid outlet temperature that design needs.
Because this heat exchanger adopts floating head type slip tube sheet at afterbody, the inconsistent operating mode therefore, it is possible to the shell journey that adaptation shell journey fluid temperature difference causes more greatly expands, equally also goes for the heat exchanger that heat exchanger tube is longer.
Heat exchanger provided by the invention adopts disk, circular ring type deflection plate, the deflection plate of this type can increase the ratio of shell-side fluid transversal flow heat exchanger tube thus improve heat conduction efficiency, simultaneously, the deflection plate of this type can reduce the path of shell-side fluid transversal flow heat exchanger tube, thus reduce the circulating resistance of shell-side fluid, namely reduce the pressure drop of fluid in shell side.
In heat exchanger provided by the invention, shell-side fluid flow direction in housing is uniform, effectively reduces the probability of happening of heat exchanger vibration, acts on energetically playing in service life of equipment and maintenance.
Heat exchanger provided by the invention adopts centre of punch passages regulate form to regulate tube side fluid by the ratio of heat exchanger tube, thus controls heat exchanger tube pass fluid outlet temperature, has good guaranteeing role to needing equipment steady state operation after this heat exchanger.Meanwhile, the technological process of its center passages regulate function to significantly load variations has good adaptability, can guaranteed load change time its tube side fluid outlet temperature constant.
It is comparatively large that heat exchanger provided by the invention is applicable to shell journey fluid temperature difference, heat exchanger tube and the larger operating mode of shell-side cylinder differential expansion.
Claims (4)
1. one kind has temperature controlling function disk circular ring type deflection plate floating head heat exchanger, comprise housing (10), head construction (11) and floating head type tail structure (12) is respectively equipped with at the two ends of housing (10), head cavity is provided with in head construction (11), the tube-side inlet (1) be positioned on head construction (11) is connected with head cavity, tube side fluid cavity spaced apart from each other and shell-side fluid cavity is provided with in floating head type tail structure (12), be positioned at shell side inlet (8) on floating head type tail structure (12) and tube side outlet (9) is connected with shell-side fluid cavity and tube side fluid cavity respectively, shell-side fluid cavity is connected with the internal cavity of housing (10) simultaneously, many heat exchanger tubes (4) are furnished with in housing (10), heat exchanger tube (4) is connected with head cavity and tube side fluid cavity respectively, housing (10) is provided with shell-side outlet (13), shell-side fluid enters housing (10) by shell side inlet (8) and goes out from shell-side outlet (13) afterwards with after the tube side fluid heat exchange in heat exchanger tube (4), it is characterized in that: in housing (10), be also furnished with the central passage (5) that inwall is provided with thermal insulation layer, one end of central passage (5) is stretched in head cavity, the other end is connected with tube side fluid cavity, central passage butterfly valve (2) is provided with in central passage (5), flow through central passage butterfly valve (2) again after the tube side fluid of the head cavity entered from tube-side inlet (1) is positioned at head cavity end via central passage (5) enters central passage (5) and enter tube side fluid cavity along central passage (5), in the process, the heat exchange of the tube side fluid in central passage (5) and the shell-side fluid in housing (10) is completely cut off by thermal insulation layer, the tube side fluid of the head cavity entered from tube-side inlet (1) also enters heat exchanger tube (4) via the tube side butterfly valve (3) being positioned at head cavity simultaneously and enters tube side fluid cavity along heat exchanger tube (4), export (9) from tube side and flow out after the tube side fluid flowing out central passage (5) mixes with the tube side fluid of outflow heat exchanger tube (4) in tube side fluid cavity, also be provided with at least a slice disc and donut (6) and at least a slice disk deflection plate (7) in housing (10) simultaneously, disc and donut (6) and disk deflection plate (7) arrange vertically and the arranged direction of arranged direction and heat exchanger tube (4) is perpendicular, the shell-side fluid flowed in housing (10) is only passed through by the middle through-hole of disc and donut (6), gap is there is between the edge of disk deflection plate (7) and the inwall of housing (10), the shell-side fluid flowed in housing (10) is only passed through by this gap.
2. one as claimed in claim 1 has temperature controlling function disk circular ring type deflection plate floating head heat exchanger, it is characterized in that: described disc and donut (6) and described disk deflection plate (7) interval are arranged.
3. one as claimed in claim 1 has temperature controlling function disk circular ring type deflection plate floating head heat exchanger, it is characterized in that: described central passage (5) is arranged in the middle part in described housing (10).
4. one as claimed in claim 1 has temperature controlling function disk circular ring type deflection plate floating head heat exchanger, it is characterized in that: described heat exchanger tube (4) is uniformly distributed along the circumference of described central passage (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310447514.7A CN103486882B (en) | 2013-09-26 | 2013-09-26 | One has temperature controlling function disk circular ring type deflection plate floating head heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310447514.7A CN103486882B (en) | 2013-09-26 | 2013-09-26 | One has temperature controlling function disk circular ring type deflection plate floating head heat exchanger |
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| Publication Number | Publication Date |
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| CN103486882A CN103486882A (en) | 2014-01-01 |
| CN103486882B true CN103486882B (en) | 2015-08-19 |
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| CN201310447514.7A Active CN103486882B (en) | 2013-09-26 | 2013-09-26 | One has temperature controlling function disk circular ring type deflection plate floating head heat exchanger |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109974510B (en) * | 2019-05-08 | 2024-02-23 | 张化机（苏州）重装有限公司 | Baffle plate |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2091003A (en) * | 1936-03-14 | 1937-08-24 | J P Devine Mfg Co Inc | Heat exchange apparatus |
| US4197907A (en) * | 1978-04-05 | 1980-04-15 | Exxon Research & Engineering Co. | Floating head support system for shell and tube heat exchanger |
| JPS61256193A (en) * | 1985-05-07 | 1986-11-13 | Mitsubishi Heavy Ind Ltd | Heat exchanger |
| JPS62210393A (en) * | 1986-03-11 | 1987-09-16 | Ishikawajima Harima Heavy Ind Co Ltd | Heat exchanger of straight heat transfer pipe type |
| CN2379768Y (en) * | 1998-10-12 | 2000-05-24 | 李铁 | Steel tube shell type cool exchanging equipment |
| CN100434858C (en) * | 2007-03-09 | 2008-11-19 | 西安交通大学 | Combined multi-shell spiral baffle plate shell-and-tube heat exchanger |
| CN101706227B (en) * | 2009-11-27 | 2013-01-02 | 北京化工大学 | Shell-and-tube heat exchanger with un-notched traverse baffles |
| CN203534278U (en) * | 2013-09-26 | 2014-04-09 | 上海锅炉厂有限公司 | Disc-circular ring baffle plate floating head heat exchanger with temperature control function |
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