CN201436548U - A baffle for a shell-and-tube heat exchanger - Google Patents

A baffle for a shell-and-tube heat exchanger Download PDF

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Publication number
CN201436548U
CN201436548U CN2009200594979U CN200920059497U CN201436548U CN 201436548 U CN201436548 U CN 201436548U CN 2009200594979 U CN2009200594979 U CN 2009200594979U CN 200920059497 U CN200920059497 U CN 200920059497U CN 201436548 U CN201436548 U CN 201436548U
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CN
China
Prior art keywords
deflection plate
tube
shell
heat exchanger
baffles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2009200594979U
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Chinese (zh)
Inventor
袁博洪
唐禄顺
罗跃斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou United A / C & R Co Ltd
Original Assignee
Guangzhou United A / C & R Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou United A / C & R Co Ltd filed Critical Guangzhou United A / C & R Co Ltd
Priority to CN2009200594979U priority Critical patent/CN201436548U/en
Application granted granted Critical
Publication of CN201436548U publication Critical patent/CN201436548U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A baffle for a shell-and-tube heat exchanger is arranged in a tubular shell, the two end beads of the tubular shell are provided with tube plates, and the outer side of the tubular shell bead is fixedly connected with an end cover, heat exchange tubes and baffles are arranged between the tube plates, each baffle is provided with a pore, the heat exchange tubes pass through the pores on the baffles and are fixed between two tube plates, the baffles are full circle shapes, are arranged in parallel, and are provided with soft edge round liquid-passing notch, every adjacent baffles are arranged with opposite notches from top to bottom, and the pores on the baffles are evenly arranged at the given spacing. The utility model reinforces the sealing performance because the baffles have soft edges, thereby avoiding the phenomenon that the flow media forms short circuit at the inner wall of the shell and the boundary of the baffles, leading the shell fluid to flow according to the reasonable channel, improving the heat exchanging efficiency, effectively preventing the baffles from rustiness, and having clean and non-pollution water quality.

Description

A kind of shell-and-tube heat exchanger deflection plate
Technical field
The utility model relates to the shell-and-tube heat exchanger in the refrigeration plant, is specifically related to the baffling limit of using in a kind of shell-and-tube heat exchanger.
Background technology
At present, the shell-and-tube heat exchanger that uses in central air-conditioning is made up of parts such as housing, heating surface bank, tube sheet, deflection plate (baffle plate) and bobbin carriages.Housing mostly is cylindrical shape, and tube bank is equipped with in inside, and the tube bank two ends are fixed on the tube sheet.Carry out cold and hot two kinds of fluids of heat exchange, a kind of mobile in pipe, be called tube side fluid; Another kind of mobile outside pipe, be called shell-side fluid.For improving the individual heat transfer coefficient of extratubal fluid, some baffle plates are installed in housing usually.Baffle plate not only provides support for pipe, also can improve shell-side fluid speed, force fluid in accordance with regulations distance repeatedly laterally by the tube bank, the enhance fluid turbulent extent.
Traditional shell channel is made up of four identical segmental baffles of quadrant number, the axis of every segmental baffle and housing at an angle, from behind housing, docking arrangement successively before the housing, form " Z " type space between the segmental baffle of two adjacent quadrants, and certain clearance (2~3mm) is arranged between deflection plate and housing, the deflection plate of this kind structure tends to cause flow media to form the short circuit shunting phenomenon in inner walls and deflection plate border, short circuit shunting has reduced the flow of helical duct medium, heat exchange has weakened, but also make that shell-side fluid can be to the local scour severity of deflection plate, cause metal baffles to get rusty for a long time and influence water quality, in addition, the deflection plate of this structure can cause shell-side fluid to produce eddy current at local location, has a strong impact on the heat exchange effect of heat exchanger.
The utility model content
Weak point at existing heat exchanger manufacturing in the market and mode of operation existence, the utility model aims to provide a kind of deflection plate with the sealing of soft limit, can avoid the shell fluid short circuit shunting, make shell fluid flow, improve heat exchange side liquid mean flow rate, improve heat exchanger service life according to more rational form.
The utility model is achieved by the following technical programs:
A kind of shell-and-tube heat exchanger deflection plate, be arranged in the tubular shell, being provided with tube sheet, the tube sheet outside at tubular shell two ends bead is provided with and fixedlys connected with the housing bead, be provided with heat exchanger tube and deflection plate between the tube sheet, deflection plate is provided with pore, the pore that heat exchanger tube passes on the deflection plate is fixed between two tube sheets, described deflection plate is the full circle shape, be set up in parallel, be with the circular logical liquid breach in soft limit, each adjacent deflection plate arranges relatively up and down that with breach the pore on the described deflection plate is evenly distributed at a certain distance.
Deflection plate of the present utility model adopts polypropylene material to make, and all is provided with tie rod hole on every deflection plate.One end of described pull bar vertically pass on the deflection plate tie rod hole and with the end face of a tube sheet by being threaded.The other end of pull bar is then tightened by welding or with double nut with last piece deflection plate.
Also be provided with pull bar and distance sink tube between described two tube sheets, fix by distance sink tube between per two deflection plates, distance sink tube is set on the pull bar outside of per two deflection plates.
Pore on the described deflection plate is a circular port.
Be provided with a delivery port 10, temperature-sensitive mouth 11 and water inlet 12, temperature-sensitive mouth 11 respectively at tubular shell outer wall place near the both sides tube sheets.
Chilled water enters in the tubular shell 1 through water inlet 12, and by deflection plate 5 choked flows, current form Z-shaped flowing water flow along heat-exchanging tube bundle 4 (can be copper pipe), and with heat-exchanging tube bundle 4 abundant heat exchange, the fluid after heat exchange flows out by delivery port 10.
The utility model compared with prior art has the following advantages:
1, deflection plate described in the utility model is owing to be with the circular logical liquid breach in soft limit, better tightness, the fluid form according to the rules of housing inboard is flowed, avoided flow media to form the short circuit shunting phenomenon, effectively improve heat exchange efficiency in inner walls and deflection plate border.
2, deflection plate described in the utility model can make the housing inboard fluid according to rational channel flow, reduce the washing away of its part, prevent that effectively deflection plate from getting rusty, water cleaning is pollution-free.
Description of drawings
Fig. 1 is a structural representation of the present utility model; Fig. 2 is an A portion enlarged drawing among Fig. 1; Fig. 3 is the structural representation of the utility model deflection plate; Fig. 4 is the assembly drawing of the utility model deflection plate and pull bar; Fig. 5 is an I portion enlarged drawing among Fig. 4.Mark among the figure, housing 1, tube sheet 2, end cap 3, heat-exchanging tube bundle 4, deflection plate 5, distance sink tube 6, pull bar 7, pore 8, tie rod hole 9, delivery port 10, temperature-sensitive mouth 11, water inlet 12, tight split nut 13.
The specific embodiment
Below in conjunction with example and accompanying drawing the utility model is described in further detail.
As shown in Figure 1, the utility model deflection plate is arranged in the tubular shell 1, be provided with tube sheet 2, two tube sheets 2 at tubular shell 1 two ends and be connected with both sides end cap 3 by asbestos packing sheet respectively, between two tube sheets 2, be provided with some heat exchanger tubes 4, deflection plate 5, distance sink tube 6 and pull bar 7.Described heat exchanger tube 4 comprises the body of being made by materials such as carbon steel, stainless steel, alloys; Consider that deflection plate 5 of the present invention needs low cost of manufacture and environment friendly and pollution-free, so adopt polypropylene to make.
Shown in Fig. 2,3,4, soft limit is circular to lead to liquid breach deflection plate to deflection plate 5 of the present utility model in order to be with, and all adjacent two deflection plates 5 are with the breach positioned opposite.
For avoiding causing the flow media in the tubular shell 1 to form the short circuit shunting phenomenon, adopt on the utility model deflection plate 5 and be with soft limit structure to seal.
As shown in Figure 3, deflection plate 5 of the present utility model is a full circle shape deflection plate, is drilled with the pore 8 that equates with heat exchanger tube 4 quantity on the deflection plate 5 at least, and these pores 8 are all evenly distributed at a certain distance.Adjacent two pores, 8 centre distance deviations should be controlled at ± 0.3mm, the centre distance deviation of any two pores 8 should remain on ± 1mm about.
For avoiding causing the flow media in the tubular shell 1 to form the short circuit shunting phenomenon, pore 8 on the utility model deflection plate 5 adopts the arrangement of rational and orderly, present embodiment is an example with 150 pores 8, line up 15 rows from top to down, 1 row and 12 rows are 12 pores, and 2,5 and 9 rows are 16 pores, 3 rows and 4 rows are 14 pores, 6,7,10,14 and 15 rows are 6 pores, and 8 rows and 11 rows are 8 pores, and 13 rows are 4 pores.
Also be provided with tie rod hole 9 on the every deflection plate 5 of the present utility model.Tie rod hole 9 numbers in the present embodiment are at least 10, and the position of the tie rod hole 9 on every deflection plate 5 is identical.
Shown in Fig. 4,5, pull bar 7 is ± 0.5mm that deflection plate 5 should be smooth, plane franchise 2.5mm with the perpendicularity franchise of deflection plate 5.One end of described pull bar 7 vertically passes the tie rod hole 9 on the deflection plate 5 and is connected by tight split nut 13 with the end face of a tube sheet 2, and the other end of pull bar 7 is then tightened with last piece deflection plate 5 welding or by double nut and is connected.For making each piece deflection plate 5 firm remaining on the position, at this time, then fixedly connected by distance sink tube 6 between per two deflection plates 5, distance sink tube 6 is set on the outside of the pull bar 7 between per two deflection plates 5.
Be provided with a delivery port 10, temperature-sensitive mouth 11 and water inlet 12, temperature-sensitive mouth 11 respectively at tubular shell 1 outer wall place near both sides tube sheet 2.
The utility model comprises by 1 welding of tube sheet 2 and tubular shell and the closed circulation loop that is connected successively and forms with deflection plate 5 assemblies such as grade, chilled water enters in the housing 10 through water inlet 12, the breach of two deflection plates 5 becomes direction in opposite directions owing to whenever link to each other, thereby current are by after deflection plate 5 choked flows, form Z-shaped flowing along heat-exchanging tube bundle 4 (can be copper pipe), flowing water flow and heat-exchanging tube bundle 4 abundant heat exchange, the fluid after heat exchange flows out by delivery port 10.

Claims (7)

1. shell-and-tube heat exchanger deflection plate, be arranged in the tubular shell (1), outside being provided with tube sheet (2), tube sheet (2), tubular shell (1) two ends bead is provided with the end cap (3) of fixedlying connected with the tubular shell bead, be provided with heat exchanger tube (4) and deflection plate (5) between the tube sheet (2), deflection plate (5) is provided with pore (8), the pore (8) that heat exchanger tube (4) passes on the deflection plate (5) is fixed between two tube sheets (2), it is characterized in that
Described deflection plate (5) is the full circle shape, is set up in parallel, and is with soft limit, has circular logical liquid breach on the soft limit, and each adjacent deflection plate (5) is arranged relatively up and down with breach;
Pore (8) on the described deflection plate (5) is evenly distributed at a certain distance.
2. shell-and-tube heat exchanger deflection plate according to claim 1 is characterized in that, also is provided with pull bar (7) and distance sink tube (6) between described two tube sheets (2).
3. shell-and-tube heat exchanger deflection plate according to claim 2 is characterized in that, deflection plate (5) is provided with tie rod hole (9).
4. shell-and-tube heat exchanger deflection plate according to claim 3, it is characterized in that, described pull bar (7) one ends vertically pass on the deflection plate (5) tie rod hole (9) and with the end face of a tube sheet (2) by being threaded, pull bar (7) other end then welds or uses nut screwing clamping with last piece deflection plate (5).
5. shell-and-tube heat exchanger deflection plate according to claim 4 is characterized in that, and is fixing by distance sink tube (6) between the adjacent deflection plate (5), and distance sink tube (6) is set in twos on the pull bar (7) between the adjacent baffle (5).
6. shell-and-tube heat exchanger deflection plate according to claim 5 is characterized in that, the pore (8) on the described deflection plate (5) is a circular port.
7. according to each described shell-and-tube heat exchanger deflection plate of claim 1-6, it is characterized in that described deflection plate (5) adopts polypropylene material to make.
CN2009200594979U 2009-06-30 2009-06-30 A baffle for a shell-and-tube heat exchanger Expired - Fee Related CN201436548U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200594979U CN201436548U (en) 2009-06-30 2009-06-30 A baffle for a shell-and-tube heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200594979U CN201436548U (en) 2009-06-30 2009-06-30 A baffle for a shell-and-tube heat exchanger

Publications (1)

Publication Number Publication Date
CN201436548U true CN201436548U (en) 2010-04-07

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Family Applications (1)

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CN2009200594979U Expired - Fee Related CN201436548U (en) 2009-06-30 2009-06-30 A baffle for a shell-and-tube heat exchanger

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101986090A (en) * 2010-11-30 2011-03-16 镇江飞利达电站设备有限公司 Sealing device for eliminating gaps between traverse baffles and shell of shell and tube heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101986090A (en) * 2010-11-30 2011-03-16 镇江飞利达电站设备有限公司 Sealing device for eliminating gaps between traverse baffles and shell of shell and tube heat exchanger

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100407

Termination date: 20150630