CN104930497B - Shell-and-tube evaporator by adoption of composite type special-shaped tube bundle - Google Patents
Shell-and-tube evaporator by adoption of composite type special-shaped tube bundle Download PDFInfo
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- CN104930497B CN104930497B CN201510350510.6A CN201510350510A CN104930497B CN 104930497 B CN104930497 B CN 104930497B CN 201510350510 A CN201510350510 A CN 201510350510A CN 104930497 B CN104930497 B CN 104930497B
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- Prior art keywords
- tube
- shell
- evaporator
- heat
- heat exchange
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- 239000002131 composite material Substances 0.000 title abstract 4
- 239000012530 fluid Substances 0.000 claims abstract description 12
- 238000001704 evaporation Methods 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims description 27
- 230000008676 import Effects 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 230000009466 transformation Effects 0.000 claims description 6
- 239000003507 refrigerant Substances 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 2
- 239000006200 vaporizer Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- MSSNHSVIGIHOJA-UHFFFAOYSA-N pentafluoropropane Chemical compound FC(F)CC(F)(F)F MSSNHSVIGIHOJA-UHFFFAOYSA-N 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-PWCQTSIFSA-N Tritiated water Chemical compound [3H]O[3H] XLYOFNOQVPJJNP-PWCQTSIFSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a shell-and-tube evaporator by adoption of a composite type special-shaped tube bundle. According to the structure of the shell-and-tube evaporator, one composite type special-shaped tube bundle is formed by sequentially connecting a corrugated tube, a T-shaped structural tube and a finned tube in a welding mode, and a plurality of composite special-shaped tubes are fixedly connected together in parallel through tube plates at the two ends of the tubes to form the heat exchange tube bundle; the outer side of the tube bundle is provided with four baffle plates so that fluid can be made to form a single-tube-pass single-shell-pass heat exchange channel, the tube plates and a shell are welded into a whole, the two ends of the tube plates are provided with a left tube box and a right tube box, and the tube plates and the tube boxes are connected in a flange type sealed mode to form an evaporation type heat exchanger; working media enter the heat exchanger from the right tube box, sequentially flow through the corrugated tubes, the T-shaped structural tubes and the finned tubes and are changed into steam through heat absorption phase change evaporation to be discharged out of an outlet of the left tube box. By means of the shell-and-tube evaporator, different stages of heat exchange coefficients can be increased for the state and flow path of the heat exchange working media; due to the fact that the overall heat exchange efficiency of the evaporator can be improved effectively, the effective heat exchange volume of the evaporator can be reduced relatively at the same heat exchange load, and the filling quantity of the working media is reduced.
Description
Technical field
The invention belongs to thermal technology's heat transmission equipment, and in particular to it is a kind of using compound shape tube as tube bank heat exchange
Device.
Background technology
Energy shortage, environmental pollution have become one of main bugbear of restriction human kind sustainable development, wherein improving energy
The utilization ratio in source becomes focus of concern naturally, and heat exchanger is widely used as a kind of important heat-exchange apparatus
Various fields.Heat exchanger changes the efficiency that the height of efficiency directly affects heat power engineering system or circulation system, so as to affect the energy
Utilization rate.
Used as the vaporizer in heat exchanger, its heat transfer process mainly includes：The liquid heat convection of warm-up phase, phase transformation
The evaporation and heat-exchange in stage, the steam state heat convection in overheated stage etc..It is well known that heat exchange mode is different for tube bank in vaporizer
Cast have different requirements, the tube bank that at present majority shell-and-tube evaporators are used is generally light pipe or shape matching is single
Certain class enhanced tube.Such as the bellows tube that liquid-liquid heat exchange has invigoration effect is used for phase transformation evaporation and heat-exchange, its efficiency it is relative just than
It is relatively low；For T-shaped pipe or sintered pipes that nucleate boiling heat exchange has invigoration effect, for its invigoration effect of the heat exchange with phase transformation
It is unobvious.Therefore the shell-and-tube evaporator of single cast is used for thermodynamic cycle, for the raising of the system entirety thermal efficiency has one
Fixed limitation.
Based on problem above, the present invention is proposed and a kind of as tube bank and improved shape tube constitute into shell-and-tube steaming
Device is sent out, the heat exchange efficiency of a vaporizer can be significantly improved.
The content of the invention
It is an object of the present invention to provide a kind of compound abnormal shape being made up of bellows tube, three kinds of casts of T-shaped pipe and finned tube
The shell-and-tube evaporator of pipe tube bank.
To solve the above problems, the technical scheme is that：The shell-and-tube evaporator restrained using compound shape tube
Including：Housing, tube sheet, bobbin carriage, deflection plate, bellows tube, T-type structure pipe and finned tube etc..By bellows tube, T-type structure pipe and
Finned tube is formed by welding successively from right to left a compound shape tube, many compound shape tubes by the tube sheet at pipe two ends simultaneously
Connection is fixed together into heat-exchanging tube bundle.Four pieces of deflection plates are provided with the outside of heat-exchanging tube bundle, make fluid form single tube journey monoshell
The heat exchanger channels of journey.Tube sheet is integrated with case weld, and tube sheet two ends are provided with left and right bobbin carriage, and tube sheet passes through flange form with bobbin carriage
Being tightly connected becomes evaporating heat exchanger.
A compound shape tube is consisted of by three sections of different types of enhanced tube connections, its object is to be applied to difference
Heat transfer process.The heat transfer process occurred in various heat exchange tube bank includes liquid-liquid heat exchange, liquid-vapour and overheated etc., and each is changed
The feature of thermal process is all not quite similar, so the reinforced structure that heat-exchanging tube bundle is adopted also should not be identical.Light pipe and single type
Enhanced tube obviously can not be applied to the whole heat transfer process in vaporizer.And the proposition of compound shape tube can make up described lacking
Fall into, can integrally improve the coefficient of heat transfer of vaporizer.
The beneficial effect of of the invention the characteristics of and generation is, compound shape tube can be directed to the state of heat-exchange working medium and concrete
Flow process and improve the coefficient of heat transfer in various heat exchange stage.Because the overall heat exchange efficiency of vaporizer can effectively improve,
So same heat exchange load, can relatively reduced vaporizer effective heat exchange volume, and reduce the filling quantity of working medium.
Description of the drawings
Shown Fig. 1 is the structure and principle sketch of the present invention.
Specific embodiment
The principle of the present invention is described further with system below in conjunction with Fig. 1 and by embodiment.Need explanation
Be the present embodiment be narrative, rather than be determinate, protection scope of the present invention is not limited with this.
The shell-and-tube evaporator restrained using compound shape tube, including：Housing, tube sheet, bobbin carriage, deflection plate, bellows tube,
T-type structure pipe and finned tube etc..Its structure is：Structure is welded successively from right to left by bellows tube 1, T-type structure pipe 2, finned tube 3
The compound shape tubes of Cheng Yigen, many compound shape tubes are fixed together into heat exchanger tube by the parallel connection of tube sheet 4 at pipe two ends
Beam.Four pieces of deflection plates 5 are provided with the outside of heat-exchanging tube bundle, make two heat exchanging fluids form the heat exchanger channels of single tube Cheng Dan shell sides.Pipe
Plate is welded as a whole with housing 6, and tube sheet two ends are provided with left and right bobbin carriage 7, and tube sheet is tightly connected with bobbin carriage by flange form becomes steaming
Hairdo heat exchanger.
The import and export on hot-fluid side is respectively provided at the left upper end and bottom righthand side of the housing, and hot fluid is through housing upper left
The import 8 at end is entered in shell, by the passage formed by four pieces of deflection plates, flows successively through the finned tube, T-type structure pipe and ripple
Section pipe surface, finally discharges from the outlet 9 of housing bottom righthand side.
The import and export of working medium side is respectively provided at the center of right, left both sides bobbin carriage, and liquid refrigerant enters from the import of right side bobbin carriage
Enter in heat-exchanging tube bundle, then in turn through bellows tube, T-type structure pipe and finned tube, heat absorption phase transformation is evaporated to steam and manages from left side
The outlet of case is discharged.
The crest height of bellows tube is 2～4mm, and corrugation pitch is 4～6mm.The T-shaped height of T-type structure pipe be 0.4～
0.8mm, T stage coverage rate is 14～18/cm.The fin of finned tube be outer fin, fin height be 3～5mm, spacing of fin
For 4～6mm.
It is often to arrange compound that bellows tube, T-type structure pipe, finned tube constitute the arrangement mode of compound special-shaped heat-exchanging tube bundle
Shape tube is parallel to each other；Tube bank is staggered.
As embodiment, by three sections of different structure set of heat exchange tubes into compound shape tube, its geometric parameter is：Wall thickness
1mm, external diameter 19mm, heat exchanging segment pipe range 1.2m, 14, material is red copper.Node length of tube is 0.31m, and crest height is 3mm,
Corrugation pitch is 5mm.T-type structure length of tube is 0.58m, and T-type structure is highly 0.5mm, and coverage rate is 16/cm.Finned tube
Length is 0.18m, and fin height is 4mm, and spacing of fin is 5mm.Tube bank is arranged as equilateral triangle arrangement, Guan Zhong in vaporizer
In the heart away from for 25mm, evaporator shell external diameter is 0.17m, and length is 1.68m.
The vaporizer is assembled in organic Rankine bottoming cycle (ORC) heat power generating system, the working medium used in evaporator tube
For R245fa.Its flow is 0.234m3/ h, inlet pressure is 0.86Mpa, and temperature is 30.4 DEG C.The pressure of outlet is
0.78Mpa, exports as 85.6 DEG C.Hot fluid is GEOTHERMAL WATER, and its flow is 0.19m3/ h, inlet temperature is 105 DEG C, outlet temperature
For 80 DEG C.
Fluid interchange processes of the R245fa in compound shape tube pipe be：30.4 DEG C of liquid refrigerant is by entering pipe
Case, subsequently into node pipeline section, temperature is heated to 83.5 DEG C of liquid by 30.4 DEG C, and actual heat exchange amount is 6.4kW；83.5 DEG C of liquid
It is saturation superheated steam that state working medium enters heat absorption phase transformation in T-type structure pipe, and actual heat exchange amount is 12.6kW；Stream in T-type structure pipe
The saturation working medium for going out is heated to form 85.6 DEG C of superheated steam in finned tube, then flows out vaporizer through bobbin carriage outlet,
The actual heat exchange amount of the pipeline section is 0.62kW.
105 DEG C of GEOTHERMAL WATER enters vaporizer by hot fluid inlet, the passage of deflection plate formation is flow through, by compound different
Type pipe surface is exchanged heat, and is finally flowed out from hot fluid side, and outlet temperature is 80 DEG C.
Evaporator application in the present embodiment is in organic Rankine bottoming cycle (ORC) heat power generating system that generated energy is 600W
In, compared with conventional shell-and-tube evaporator, hence it is evident that improve the overall coefficient of heat transfer, therefore can under same thermal load conditions
To reduce heat exchanger volume, and systematic working medium filling quantity can be reduced.
Claims (6)
1. using the shell-and-tube evaporator of compound shape tube tube bank, including：Housing, tube sheet, bobbin carriage, deflection plate, bellows tube, T
Type structural tube and finned tube, is characterized in that：Welded successively from right to left by bellows tube (1), T-type structure pipe (2) and finned tube (3)
A piece compound shape tube of composition is connect, many compound shape tubes are fixed together into by tube sheet (4) parallel connection at pipe two ends
Heat-exchanging tube bundle, is provided with four pieces of deflection plates (5) on the outside of heat-exchanging tube bundle, makes fluid form the heat exchanger channels of single tube Cheng Dan shell sides,
Tube sheet is welded as a whole with housing (6), and tube sheet two ends are provided with left and right bobbin carriage (7), and tube sheet is tightly connected with bobbin carriage by flange form
Become evaporating heat exchanger.
2., according to the shell-and-tube evaporator of the compound shape tube tube bank of employing described in claim 1, it is characterized in that：Hot-fluid side
Import and export be respectively provided at the left upper end and bottom righthand side of the housing, hot fluid enters shell through the import (8) of housing left upper end
It is interior, the finned tube, T-type structure pipe and node pipe surface are flowed successively through, finally discharge from the outlet (9) of housing bottom righthand side, work
The import and export of matter side is respectively provided at the right, center of left pipe box, and liquid refrigerant enters heat-exchanging tube bundle from the import of right pipe box
Interior, then in turn through bellows tube, T-type structure pipe and finned tube, phase transformation of absorbing heat is evaporated to steam and discharges from the outlet of left pipe box.
3., according to the shell-and-tube evaporator of the compound shape tube tube bank of employing described in claim 1 or 2, it is characterized in that：It is described
The crest height of bellows tube is 2～4mm, and corrugation pitch is 4～6mm.
4., according to the shell-and-tube evaporator of the compound shape tube tube bank of employing described in claim 1 or 2, it is characterized in that：The T
The T-shaped height of type structural tube is 0.4～0.8mm, and T stage coverage rate is 14～18/cm.
5., according to the shell-and-tube evaporator of the compound shape tube tube bank of employing described in claim 1 or 2, it is characterized in that：It is described
The fin of finned tube is outer fin, and fin height is 3～5mm, and spacing of fin is 4～6mm.
6., according to the shell-and-tube evaporator of the compound shape tube tube bank of employing described in claim 1 or 2, it is characterized in that：It is described
It is often to arrange compound shape tube phase that bellows tube, T-type structure pipe, finned tube constitute the arrangement mode of compound special-shaped heat-exchanging tube bundle
It is mutually parallel；Tube bank is staggered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510350510.6A CN104930497B (en) | 2015-06-23 | 2015-06-23 | Shell-and-tube evaporator by adoption of composite type special-shaped tube bundle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510350510.6A CN104930497B (en) | 2015-06-23 | 2015-06-23 | Shell-and-tube evaporator by adoption of composite type special-shaped tube bundle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104930497A CN104930497A (en) | 2015-09-23 |
| CN104930497B true CN104930497B (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510350510.6A Expired - Fee Related CN104930497B (en) | 2015-06-23 | 2015-06-23 | Shell-and-tube evaporator by adoption of composite type special-shaped tube bundle |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107883370A (en) * | 2016-09-30 | 2018-04-06 | 中石化洛阳工程有限公司 | A kind of vertical steam superheater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3955620A (en) * | 1974-04-26 | 1976-05-11 | Artemov Lev N | Heat exchanger |
| US4004634A (en) * | 1975-05-06 | 1977-01-25 | Universal Oil Products Company | Automotive oil cooler |
| CN2399698Y (en) * | 1999-12-08 | 2000-10-04 | 张世荣 | Fin type corrugated pipe |
| CN101871738A (en) * | 2010-06-22 | 2010-10-27 | 江苏中圣高科技产业有限公司 | Thermal-load adjustable high-efficiency heat exchanger |
| CN203413985U (en) * | 2013-05-31 | 2014-01-29 | 吴江创新印染厂 | Shell-and-tube corrugated tube heat exchanger |
-
2015
- 2015-06-23 CN CN201510350510.6A patent/CN104930497B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3955620A (en) * | 1974-04-26 | 1976-05-11 | Artemov Lev N | Heat exchanger |
| US4004634A (en) * | 1975-05-06 | 1977-01-25 | Universal Oil Products Company | Automotive oil cooler |
| CN2399698Y (en) * | 1999-12-08 | 2000-10-04 | 张世荣 | Fin type corrugated pipe |
| CN101871738A (en) * | 2010-06-22 | 2010-10-27 | 江苏中圣高科技产业有限公司 | Thermal-load adjustable high-efficiency heat exchanger |
| CN203413985U (en) * | 2013-05-31 | 2014-01-29 | 吴江创新印染厂 | Shell-and-tube corrugated tube heat exchanger |
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| Publication number | Publication date |
|---|---|
| CN104930497A (en) | 2015-09-23 |
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Granted publication date: 20170426 |