CN200968789Y - High efficiency dish-ring type heat exchanger - Google Patents
High efficiency dish-ring type heat exchanger Download PDFInfo
- Publication number
- CN200968789Y CN200968789Y CNU200620134300XU CN200620134300U CN200968789Y CN 200968789 Y CN200968789 Y CN 200968789Y CN U200620134300X U CNU200620134300X U CN U200620134300XU CN 200620134300 U CN200620134300 U CN 200620134300U CN 200968789 Y CN200968789 Y CN 200968789Y
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- heat exchanger
- ring type
- heat exchange
- exchanger tube
- dish
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Abstract
The utility model provides a dish ring type heat exchanger of high efficiency, which comprises a ring shape board, a dish shape board and a plurality of heat exchange tubes distributed in longitudinal direction. The utility model is characterized in that the heat exchange tubes are distributed in round ring shape, the central area distributed with the heat exchange tubes is provided with a central cavity, the position between the heat exchange tubes on the periphery and the side wall of the heat exchanger forms a peripheric cavity, the heat exchange tubes of the heat exchanger are arranged in line form with circles with concentricity and change diameter and equal pitch, the interval between the adjacent heat exchange tubes is equal. The dish ring type heat exchanger of high efficiency comprises a gas port which is provided with a gas chamber which is communicated with the peripheric cavity. The utility model can achieve higher heat exchange efficiency and relatively lower pressure drop.
Description
Technical field
The utility model relates to the industrial device that carries out heat exchange, more specifically relates to a kind of efficient dish ring type heat exchanger.
Background technology
Heat exchanger is the visual plant in metallurgical off-gas acid-making and the chemical system gas washing in SA production, and the heat of high-temperature gas is passed to unconverted cryogenic gas after being responsible for transforming, and makes cold-gas temperature reach the reaction temperature of catalyst.The temperature of high-temperature gas is also dropped to about 420 ℃, enters next section conversion.Realize the autothermal equilibrium of whole process by the exchange of heat.
The at present industrial heat exchanger that generally uses according to the form difference of deflection plate, is divided into circle and lacks formula, dish ring type, both shoulders formula or the like.
The most frequently used is that circle lacks the formula heat exchanger, and it is maximum that the type heat exchanger is used in gas washing in SA production, this product technology maturation, and the application time is long, is easy to find a large amount of experimental datas and computing formula, and a lot of Chevron Research Company (CRC)s all like adopting.But, find that the type equipment has a lot of these problems at aspects such as heat exchange efficiency, equipment pressure losses by long term production.Particularly, circle lacks the formula heat exchanger and mainly has following shortcoming: 1. deflection plate has a certain amount of stagnant area for circle lacks formula near deflection plate, and this place's gas does not flow, and the heat exchange efficiency that has reduced equipment has increased pressure and fallen.2. circle lacks the orientation that the formula deflection plate has limited gas inlet and outlet, has increased the difficulty of Process configuration, often needs to increase duct length, increases floor space, and construction costs is strengthened.Along with the development that the sulphuric acid plant single series maximizes, these problems are outstanding further, and designing novel high-performance heat exchanger becomes very urgent problem.
And also there are a lot of defectives in existing dish ring type heat exchanger, as the layout cross section of heat exchanger tube or be equilateral triangle and arrange, or is arranged in concentric circles.This kind arrangement mode has a lot of deficiencies.Rounded projections arranged is easy to cause the gas short circuit phenomenon.It is overlapped that the concentric circles arrangement has the part heat exchanger tube, produces eddy current when gas flows into, and lowers efficiency.
Center and outer periphery in the tube bank district of heat exchanger tube do not have enough gas to retain passage, when causing recuperated gas to carry out heat exchange between annular slab and dish plate, had more stagnant area, effectively the cross-flow area reduces, heat transfer efficiency is low, and unworthy pressure loss is a lot.
The utility model content
Therefore, the purpose of this utility model is to provide a kind of efficient dish ring type heat exchanger, it adopts dish ring type deflection plate and unique heat exchanger tube arrangement mode, falls with relative low pressure and obtain higher heat exchange efficiency, with the above-mentioned shortcoming of avoiding aforementioned existing heat exchanger to exist.
Correspondingly, the utility model provides a kind of efficient dish ring type heat exchanger, the heat exchanger tube that includes annular slab, dish plate and vertically distribute, it focuses on: this heat exchanger tube is circular distribution, this heat exchanger tube center of distribution zone is provided with central cavity, is formed with peripheral cavity between the sidewall of the heat exchanger tube of periphery and this heat exchanger.
Wherein, this heat exchanger tube is pitch arrangements such as concentric reducing circle, and the distance between the adjacent heat exchanger tube equates.
This efficient dish ring type heat exchanger includes air inlet/outlet, and this air inlet/outlet place is provided with air chamber, and this air chamber and this periphery cavity are connected, and play the effect of heat exchanger expansion joint.
The present utility model people is actual from producing, according to heat transfer theory, by analysis and research to heat transfer efficiency, pressure degradation processing performance, adopt stream analytical technology and advanced tube bank method for designing, make heat transfer efficiency, the pressure degradation processing performance of heat exchanger that further optimization arranged, and determined the device structure method for designing, and set up corresponding heat transfer theory and pressure and fallen the computational mathematics model, developed out " efficient dish ring type heat exchanger " described in the utility model.This efficient its shell side deflection plate of dish ring type heat exchanger is designed to annular slab and dish plate, and two plates are alternately installed.That heat-transfer pipe distribute to adopt is advanced pitch ranking methods such as " " with one heart reducing circles, and promptly heat exchanger tube is distributed on the concentric circles of reducing, and the distance between the heat exchanger tube on each adjacent circle equates.When tube bank was passed through in the gas cross-flow, each heat exchanger tube did not all have short circuit phenomenon, has improved heat exchange efficiency, has avoided restraining self restriction to the equipment nozzle orientation.The utility model can be obtained higher heat exchange efficiency and fall with relative low pressure.
Lack the formula heat exchanger with common circle and compare, when heat transfer coefficient was identical, pressure fell and can reduce 23 ~ 28%, fell when identical at pressure, and heat transfer coefficient can improve 30 ~ 50%.Simultaneously owing to improved the heat transfer coefficient { 18W/ (m that lacks formula from circle
2℃) bring up to 21 ~ 27W/ (m
2℃), make heat transfer area reduce 15 ~ 30%.
More specifically, efficient dish ring type heat exchanger described in the utility model has following advantage:
1. heat exchanger tube adopts pitch scroll arrangements such as concentric reducing circle, makes every heat exchanger tube all have good heat transfer boundary condition.When tube bank was passed through in the gas cross-flow, each heat exchanger tube did not all have short circuit phenomenon, helps improving the heat exchange effect, avoids restraining self restriction to the equipment nozzle orientation.
2. the center and the outer circumference in tube bank district all leave more suitable gas passage, and central cavity and peripheral cavity promptly are set, and make the gas fully commutation in flow process that enters shell side, reduce unworthy pressure loss.The gas cross-flow by when tube bank the stagnant area also reduce, the effective cross-flow area of heat exchanger tube strengthens, and has improved heat transfer efficiency.
3. because the setting of central cavity, i.e. the stringing not at the center, so upper and lower tube sheet rigidity is big, for large diameter heat exchanger, tube plate thickness can attenuate.
4. because deflection plate is a dish and annular, the position of shell side gas inlet and outlet can be located at arbitrarily angled, the Process configuration compactness.
5. shell side air inlet/outlet place is provided with air chamber, and this air chamber both can make distribution of gas even, can replace the expansion joint in the common heat exchanger again.
Consulting the accompanying drawing of accompanying description the utility model embodiment, is very easily with describing the utility model afterwards in detail.It is to restriction of the present utility model that accompanying drawing can not be understood as with relevant description, and characteristics of the present utility model are limited in claims.
Description of drawings
Described with reference to accompanying drawing according to embodiment described in the utility model, wherein:
Figure 1 shows that the structural representation of the efficient dish ring type of embodiment described in the utility model heat exchanger;
Figure 2 shows that the structural representation that heat exchanger tube distributes in the efficient dish ring type of the embodiment described in the utility model heat exchanger.
The specific embodiment
The utility model embodiment provides a kind of efficient dish ring type heat exchanger, be illustrated in figure 1 as the structural representation of the efficient dish ring type of embodiment described in the utility model heat exchanger, be provided with identical with existing dish ring type heat exchanger, present embodiment is a tube structure, it includes shell side gas approach 6, shell side exhanst gas outlet 7, tube side gas approach 8, tube side exhanst gas outlet 9, manhole 12, upper perforated plate 13, lower perforated plate 14, sewage draining exit 15, inner barrel between upper perforated plate 13 and lower perforated plate 14 is provided with the annular slab 2 that is staggeredly arranged, 3 and dish plate 4, between upper perforated plate 13 and lower perforated plate 14, also be provided with pull bar 10 and distance sink tube 16, these are prior art, do not repeat them here.The shell side deflection plate of present embodiment equally also adopts annular slab 2,3 and dish plate 4, two plates to be arranged alternately.
The setting that focuses on heat exchanger tube 1 of present embodiment, be illustrated in figure 2 as the structural representation that heat exchanger tube 1 distributes in the efficient dish ring type of the embodiment described in the utility model heat exchanger, heat exchanger tube 1 is arranged on upper perforated plate 13 and the lower perforated plate 14 by pitch scrolls such as concentric circles, this heat exchanger tube 1 adopts pitch scroll arrangements such as concentric circles, can improve heat transfer efficiency.Heat exchanger tube 1 is circular distribution, and this heat exchanger tube 1 center of distribution zone is provided with central cavity 21, is formed with peripheral cavity 20 between the sidewall 22 of the heat exchanger tube 1 of periphery and this heat exchanger.That is to say, this heat exchanger tube 1 is that concentric reducing circle distributes, distance between the adjacent heat exchanger tube 1 equates, like this, heat exchanger tube center and do not establish heat exchanger tube along housing periphery place, make shell side gas behind shell side gas approach 6 access arrangements, at first by peripheral cavity 20, evenly distribute along the shell side circumferential channel, carry out heat exchange with the tube bank cross-flow of heat exchanger tube 1 composition then, concentrate on the central passage district that central cavity 21 forms subsequently, flow to dish plate 4 by annular slab 2, under the effect of dish plate 4, the gas in central passage district carries out the heat exchange second time from tube bank center cross-flow by tube bank, flows to the shell side circumferential channel then, and promptly peripheral cavity 20 carries out heat exchange next time, and so forth, flow out shell side until finishing the heat exchange load from shell side exhanst gas outlet 7.
Present embodiment adopts pitch scroll arrangements such as concentric circles by heat exchanger tube, can improve heat transfer efficiency; And deflection plate adopts dish plate and annular slab alternately to arrange, and central cavity and peripheral cavity are as the setting of gas passage, and these cavity parts are not provided with heat exchanger tube, and the setting of this passage and the influence of size heat exchanging coefficient are very big.It should be noted that, existing common heat exchanger all need be provided with expansion joint at shell side smoke entrance place, present embodiment does not then need to establish in addition expansion joint again after shell side gas approach 6, shell side exhanst gas outlet 7 places are provided with air chamber 11, this air chamber 11 both can make distribution of gas even, can replace the expansion joint in the common heat exchanger again.
Present embodiment adopts dish ring type deflection plate and unique heat exchanger tube arrangement mode, and its assurance reaches very high heat transfer coefficient, fully saves heat exchange area, by the design of optimizing structure, and the economical with materials of fullest, thus reduce investment.
The utility model described herein is easy to change on specifically described content basis, revises and/or replenishes, and is understandable that all these change, revise and/or additional all being included in the spirit and scope of foregoing description of the present utility model.
Claims (3)
1, a kind of efficient dish ring type heat exchanger, the heat exchanger tube that includes annular slab, dish plate and vertically distribute is characterized in that:
This heat exchanger tube is circular distribution, and this heat exchanger tube center of distribution zone is provided with central cavity, is formed with peripheral cavity between the sidewall of the heat exchanger tube of periphery and this heat exchanger.
2, efficient dish ring type heat exchanger as claimed in claim 1, wherein, this heat exchanger tube is pitch arrangements such as concentric reducing circle, the distance between the adjacent heat exchanger tube equates.
3, efficient dish ring type heat exchanger as claimed in claim 1 or 2, wherein, this efficient dish ring type heat exchanger includes air inlet/outlet, and this air inlet/outlet place is provided with air chamber, and this air chamber and this periphery cavity are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620134300XU CN200968789Y (en) | 2006-11-08 | 2006-11-08 | High efficiency dish-ring type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620134300XU CN200968789Y (en) | 2006-11-08 | 2006-11-08 | High efficiency dish-ring type heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200968789Y true CN200968789Y (en) | 2007-10-31 |
Family
ID=38968360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200620134300XU Expired - Lifetime CN200968789Y (en) | 2006-11-08 | 2006-11-08 | High efficiency dish-ring type heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200968789Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833243A (en) * | 2015-05-08 | 2015-08-12 | 杭州佰强能源科技有限公司 | Plastic heat exchanger for recovering waste heat of low-temperature smoke |
| CN110081722A (en) * | 2019-04-25 | 2019-08-02 | 四川陆亨能源科技有限公司 | A kind of efficient waste-heat boiler |
-
2006
- 2006-11-08 CN CNU200620134300XU patent/CN200968789Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833243A (en) * | 2015-05-08 | 2015-08-12 | 杭州佰强能源科技有限公司 | Plastic heat exchanger for recovering waste heat of low-temperature smoke |
| CN110081722A (en) * | 2019-04-25 | 2019-08-02 | 四川陆亨能源科技有限公司 | A kind of efficient waste-heat boiler |
| CN110081722B (en) * | 2019-04-25 | 2023-12-26 | 四川陆亨能源科技有限公司 | High-efficient exhaust-heat boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071031 |
|
| EXPY | Termination of patent right or utility model |