CN201945095U - Dry evaporator with double face reinforced tube bundle supported by helical baffle plate - Google Patents
Dry evaporator with double face reinforced tube bundle supported by helical baffle plate Download PDFInfo
- Publication number
- CN201945095U CN201945095U CN2011200059026U CN201120005902U CN201945095U CN 201945095 U CN201945095 U CN 201945095U CN 2011200059026 U CN2011200059026 U CN 2011200059026U CN 201120005902 U CN201120005902 U CN 201120005902U CN 201945095 U CN201945095 U CN 201945095U
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- pipe
- tube
- helical baffles
- dry evaporator
- heat
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Abstract
The utility model discloses a dry evaporator with a double face reinforced tube bundle supported by a helical baffle plate, which comprises a sealing head, a shell body, the helical baffle plate, a heat transfer pipe, a space pipe and pipe sheets, wherein the helical baffle plate, the heat transfer pipe and the spacing pipe are arranged among the pipe sheets, the helical baffle plate is fixed by the space pipe; the heat transfer pipe is a double face reinforced pipe, 2D or 3D fins are arranged on the outer surface of pipe wall and channels are arranged on inner surface of pipe wall; the spacing pipe and the heat transfer pipe pass through the helical baffle plate and are supported by the helical baffle plate, the two ends of the spacing pipe and heat transfer pipe are respectively connected with the pipe sheets; the sealing head is provided with an inlet and an outlet for refrigerant, and the shell body is provided with an inlet and an outlet for secondary refrigerant. The dry evaporator has the advantages of uniform fluid flow, low pressure drop and no dead zone, high coefficient of heat transfer and low flow resistance, and is not easy to scale, therefore, the dry evaporator can be widely used in water chiller units of large or medium-sized air conditioners.
Description
Technical field
The utility model patent relates to the heat-transfer equipment technical field, particularly relates to a kind of helical baffles and supports two-sided strengthened pipe tube bank dry evaporator.
Background technology
Dry evaporator is widely used in large and medium-sized air conditioner cold water unit.In dry evaporator, refrigerants such as fluorine Lyons, ammonia flow in heat-transfer pipe, and refrigerating mediums such as calcium chloride or glycol water shell side outside heat-transfer pipe flows; Temperature raises after tube refrigerant and the outer refrigerating medium heat exchange of pipe, and becomes gas phase by the liquid phase evaporation, manages outer refrigerating medium and tube refrigerant through after the heat exchange, the temperature reduction; Shell side is furnished with deflection plate to support heat-transfer pipe and to guide refrigerating medium by specific channel flow simultaneously.At present, it is the most general form of using in the dry evaporator that bow type deflection plate supports plain tube tube bank dry evaporator, and there is following shortcoming in the dry evaporator of this form:
1. refrigerating medium round baffling between deflection plate washes away heating surface bank, and the fluid body resistance that baffling causes in this process is big, pressure drop is high, causes that easily bundle vibration destroys;
2. there is flow dead in bow type dividing plate, the easy fouling of medium, thus influence the performance and the service life of heat exchanger;
3. adopt plain tube to carry out heat exchange, heat transfer efficiency is low, therefore can cause the increase of dry evaporator volume and cost.
Adopt helical baffles can overcome the inherent defect that bow type deflection plate supports dry evaporator as the dry evaporator of supporting construction between pipe, refrigerating medium flows in shell side, has to flow evenly, do not have the dead band, and pressure drop is low and be difficult for causing the advantage of tube bundle vibration; Helical baffles and two-sided strengthened pipe are arranged in pairs or groups, can further improve the heat transfer property of dry evaporator, thereby reduced the volume and the cost of dry evaporator.
Existing Chinese patent relates to the technological improvement of dry evaporator and enhanced tube.China utility model patent CN2783247Y discloses helical baffles and has been applied to dry evaporator and condenser, and improving the performance of evaporimeter and condenser, but this patent does not relate to the application of intensify heat transfer pipe.China utility model patent CN201191106Y also discloses the application of helical baffles in dry evaporator, and the heat-transfer pipe that this patent relates to is plain tube and riffled tube, is not the heat-transfer pipe with two-sided strengthened heat transfer property.China utility model patent CN2809564Y discloses a kind of two-sided strengthened pipe that is used for dry evaporator, the fin of this enhanced tube outer surface for circumferentially arranging, pipe internal surface has rifling formula internal thread and the groove of the fixed intervals circumferentially arranged, groove is separated into form of discontinuity with internal thread, and groove is corresponding with the fin position of pipe outer wall.This patent only relates to a kind of intensify heat transfer pipe, does not relate to the helical baffles dry evaporator.
The utility model content
The purpose of this utility model is to overcome the shortcoming of existing deflection plate dry evaporator, provide a kind of helical baffles to support two-sided strengthened pipe tube bank dry evaporator, this dry evaporator has that fluid flows evenly, pressure drop is low, do not have the dead band, less scaling, advantage such as heat transfer coefficient is high, flow resistance is low, and anti-dielectric corrosion ability is strong.
The purpose of this utility model is achieved through the following technical solutions:
A kind of helical baffles supports two-sided strengthened pipe tube bank dry evaporator, comprise end socket 1, housing 3, helical baffles 4, heat-transfer pipe 5, distance sink tube 6 and tube sheet 8, be provided with helical baffles 4, heat-transfer pipe 5 and distance sink tube 6 between tube sheet 8, helical baffles 4 is fixing by distance sink tube 6; Described heat-transfer pipe 5 is two-sided strengthened pipe; Distance sink tube 6 and heat-transfer pipe 5 pass helical baffles 4, adopt helical baffles 4 to support, and two ends are connected with tube sheet 8 respectively; On end socket 1, be provided with the outlet 9 of cold-producing medium and the import 10 of cold-producing medium, the outlet 7 of refrigerating medium after import 2 that is provided with refrigerating medium on the housing 3 and heat exchange.
Two-sided strengthened pipe described in the utility model is that outer surface of tube wall is provided with two dimension or three-dimension fin, and inner surface of tube wall is provided with the heat-transfer pipe of groove.
The structural parameters of groove described in the utility model are: groove depth is 0.3～0.6mm, and groove width is 0.4～1.0mm.
The material of heat-transfer pipe 5 described in the utility model is carbon steel, titanium, red copper or copper alloy.
Heat-transfer pipe 5 described in the utility model is pressed triangle stringing, corner triangle stringing, square stringing, corner square stringing or concentric circles stringing and is formed tube bank.
Helical baffles described in the utility model is by 1/4th ellipses that tilt with the heat exchanger central axis, and radially each circumference is with four oval deflection plate cross arrangements and be spliced into helical form along tube bank, and each adjacent baffle periphery is the continuous helical line; Or be whole continuous helical structure, and the center of tube bank is provided with central tube.
The material of helical baffles described in the utility model is carbon steel, stainless steel or engineering plastics.
Dry evaporator described in the utility model is one of fixed tube sheet type, floating head type or U type tubular type.
The utility model compared with prior art has following beneficial effect:
1. helical baffles makes fluid flow evenly at shell side, is continuously spiral slug flow stably, and the mobile back mixing of fluid is few, does not have flow dead, so refrigerating medium is difficult in the shell side fouling.
2. the influence of the by-pass of fluid and leakage flow is little, and pressure drop is low, so refrigerating medium destroys little to bundle vibration in flow process.
3. adopt two-sided strengthened pipe as the heat transfer cast, the two dimension of its outer surface or three-dimension fin can increase heat exchange area, and promote refrigerating medium in the outer process that flows of pipe, to produce strong turbulence, the disturbance that promotes the boundary layer with separate, thereby improve convective heat-transfer coefficient outside the pipe; Groove between the two-dimentional fin of its inner surface also can increase the heat exchange area in the pipe, and provides the nucleus of boiling and the promotion flow process of cold-producing medium when in-tube evaporation to produce strong turbulence, thereby improves the evaporation heat transfer coefficient in the pipe; Because the inside and outside heat transfer coefficient of pipe all is improved, so dry evaporator has very high heat transfer coefficient.
4. in conjunction with the advantage of helical baffles and two-sided strengthened pipe, the heat transfer coefficient height of dry evaporator, stable performance, pressure drop are low, less scaling, are particularly suitable for using in large and medium-sized air conditioner cold water unit.
Description of drawings
The structural representation of Fig. 1 two-sided strengthened pipe tube bank dry evaporator for helical baffles of the present utility model supports.
Fig. 2 is the structural representation that 1/4th ellipses are spliced into the helical baffles tube bank.
Fig. 3 is the structural representation that is provided with the one-piece auger deflection plate tube bank of central tube.
Fig. 4 is the structural representation of two-sided strengthened pipe, and outer surface of tube wall is provided with two-dimentional fin or three-dimension fin, and inner surface of tube wall is provided with groove.
Fig. 5 is the structural representation of two-dimentional fin, and structural parameters are respectively the high h of fin, fin pitch p.
Fig. 6 is the structural representation of groove, and structural parameters are respectively groove depth h, groove width p.
Fig. 7 is the structural representation of three-dimension fin, and structural parameters are respectively the high h of fin, fin pitch P1 and fin gap P2.
Fig. 8 is for being provided with the cross-sectional view of the two-sided strengthened pipe of three-dimension fin for outer surface of tube wall.
Fig. 9 is the equilateral triangle stringing figure of heat-transfer pipe.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in detail, but embodiment of the present utility model is not limited thereto.
As shown in Figure 1, helical baffles of the present utility model supports two-sided strengthened pipe tube bank dry evaporator, comprise end socket 1, housing 3, helical baffles 4, heat-transfer pipe 5, distance sink tube 6 and tube sheet 8, be provided with helical baffles 4, heat-transfer pipe 5 and distance sink tube 6 between tube sheet 8, helical baffles 4 is fixing by distance sink tube 6; Heat-transfer pipe 5 is two-sided strengthened pipe; Distance sink tube 6 and heat-transfer pipe 5 pass helical baffles 4, adopt helical baffles 4 to support, and two ends are connected with tube sheet 8 respectively; On end socket 1, be provided with the outlet 9 of cold-producing medium and the import 10 of cold-producing medium, the outlet 7 of low temperature refrigerating medium after import 2 that is provided with refrigerating medium on the housing 3 and heat exchange.Figure 1 shows that fixed tube-sheet exchanger.
Shown in Fig. 2,3, helical baffles 4 is by 1/4th ellipses 32 that tilt with the heat exchanger central axis, and radially each circumference is with four oval deflection plate cross arrangements and be spliced into helical form along tube bank, and each adjacent baffle periphery is the continuous helical line; Or be whole continuous helical structure, and the center of tube bank is provided with central tube 22.
As shown in Figure 4, heat-transfer pipe 5 is two-sided strengthened pipe, and the outer surface of tube wall of two-sided strengthened pipe is provided with two dimension or three-dimension fin, and inner surface of tube wall is provided with groove; Heat-transfer pipe 5 material therefors are carbon steel, titanium, red copper or copper alloy.
As shown in Figure 5, the structural parameters of the outer surface of tube wall of two-sided strengthened pipe two dimension fin are respectively: the high h of fin is 0.8～2.0mm, and fin pitch p is 1.0～1.5mm.
As shown in Figure 6, the inner surface of tube wall of two-sided strengthened pipe is provided with groove, and structural parameters are respectively: groove depth h is 0.3～0.6mm, and groove width p is 0.4～1.0mm.
As shown in Figure 7, be the structural representation of three-dimension fin, structural parameters are respectively: the high h of fin is 0.8～2.0mm, and fin pitch P1 is 1.0～1.5mm, and fin gap P2 is 1.2～1.5mm.
Be illustrated in figure 8 as the cross-sectional view that outer surface of tube wall is provided with the two-sided strengthened pipe of three-dimension fin.
As shown in Figure 9, heat-transfer pipe 5 can be by the equilateral triangle stringing.
Claims (7)
1. a helical baffles supports two-sided strengthened pipe tube bank dry evaporator, comprise end socket (1), housing (3), helical baffles (4), heat-transfer pipe (5), distance sink tube (6) and tube sheet (8), it is characterized in that, be provided with helical baffles (4), heat-transfer pipe (5) and distance sink tube (6) between tube sheet (8), helical baffles (4) is fixing by distance sink tube (6); Described heat-transfer pipe (5) is two-sided strengthened pipe; Distance sink tube (6) and heat-transfer pipe (5) pass helical baffles (4), adopt helical baffles (4) to support, and two ends are connected with tube sheet (8) respectively; On end socket (1), be provided with the outlet (9) of cold-producing medium and the import (10) of cold-producing medium, the outlet (7) of refrigerating medium after import (2) that is provided with refrigerating medium on the housing (3) and heat exchange.
2. helical baffles according to claim 1 supports two-sided strengthened pipe tube bank dry evaporator, it is characterized in that described two-sided strengthened pipe is that outer surface of tube wall is provided with two dimension or three-dimension fin, and inner surface of tube wall is provided with the heat-transfer pipe of groove.
3. helical baffles according to claim 2 supports two-sided strengthened pipe tube bank dry evaporator, and it is characterized in that the structural parameters of described groove are: groove depth is 0.3～0.6mm, and groove width is 0.4～1.0mm.
4. helical baffles according to claim 1 supports two-sided strengthened pipe tube bank dry evaporator, it is characterized in that the material of described heat-transfer pipe (5) is carbon steel, titanium, red copper or copper alloy.
5. helical baffles according to claim 1 supports two-sided strengthened pipe tube bank dry evaporator, it is characterized in that described heat-transfer pipe (5) is pressed triangle stringing, corner triangle stringing, square stringing, corner square stringing or concentric circles stringing and formed tube bank.
6. helical baffles according to claim 5 supports two-sided strengthened pipe tube bank dry evaporator, it is characterized in that, described helical baffles is by 1/4th ellipses that tilt with the heat exchanger central axis, radially each circumference is with four oval deflection plate cross arrangements and be spliced into helical form along tube bank, and each adjacent baffle periphery is the continuous helical line; Or be whole continuous helical structure, and the center of tube bank is provided with central tube.
7. support two-sided strengthened pipe tube bank dry evaporator according to claim 1 or 6 described helical baffles, it is characterized in that the material of described helical baffles is carbon steel, stainless steel or engineering plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200059026U CN201945095U (en) | 2011-01-07 | 2011-01-07 | Dry evaporator with double face reinforced tube bundle supported by helical baffle plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200059026U CN201945095U (en) | 2011-01-07 | 2011-01-07 | Dry evaporator with double face reinforced tube bundle supported by helical baffle plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201945095U true CN201945095U (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200059026U Expired - Fee Related CN201945095U (en) | 2011-01-07 | 2011-01-07 | Dry evaporator with double face reinforced tube bundle supported by helical baffle plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201945095U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102601584A (en) * | 2012-03-21 | 2012-07-25 | 中冶南方(武汉)威仕工业炉有限公司 | Assembling method of end socket protective shell of finned tube exchanger |
| CN108168327A (en) * | 2017-12-30 | 2018-06-15 | 华帝股份有限公司 | A kind of heat exchanging body |
| CN109458770A (en) * | 2018-12-17 | 2019-03-12 | 江苏世林博尔制冷设备有限公司 | A kind of U-tube dry evaporator effectively to radiate |
-
2011
- 2011-01-07 CN CN2011200059026U patent/CN201945095U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102601584A (en) * | 2012-03-21 | 2012-07-25 | 中冶南方(武汉)威仕工业炉有限公司 | Assembling method of end socket protective shell of finned tube exchanger |
| CN102601584B (en) * | 2012-03-21 | 2014-06-18 | 中冶南方(武汉)威仕工业炉有限公司 | Assembling method of end socket protective shell of finned tube exchanger |
| CN108168327A (en) * | 2017-12-30 | 2018-06-15 | 华帝股份有限公司 | A kind of heat exchanging body |
| CN109458770A (en) * | 2018-12-17 | 2019-03-12 | 江苏世林博尔制冷设备有限公司 | A kind of U-tube dry evaporator effectively to radiate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20180107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |