CN203525344U - Tubular falling-film evaporator - Google Patents

Tubular falling-film evaporator Download PDF

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Publication number
CN203525344U
CN203525344U CN201320276303.7U CN201320276303U CN203525344U CN 203525344 U CN203525344 U CN 203525344U CN 201320276303 U CN201320276303 U CN 201320276303U CN 203525344 U CN203525344 U CN 203525344U
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CN
China
Prior art keywords
heat exchanger
exchanger tube
layout area
perforated plate
tube
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
CN201320276303.7U
Other languages
Chinese (zh)
Inventor
李刚
朱亮
潘晓
钱季春
徐伟
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.)
Suzhou Zhongheng Pressure Vessel Manufacture Co Ltd
Original Assignee
Suzhou Zhongheng Pressure Vessel Manufacture 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 Suzhou Zhongheng Pressure Vessel Manufacture Co Ltd filed Critical Suzhou Zhongheng Pressure Vessel Manufacture Co Ltd
Priority to CN201320276303.7U priority Critical patent/CN203525344U/en
Application granted granted Critical
Publication of CN203525344U publication Critical patent/CN203525344U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a tubular falling-film evaporator. The tubular falling-film evaporator comprises a heating chamber shell, wherein the heating chamber shell is internally provided with a heat exchange tube, and comprises a heating chamber cylinder body; an upper tube plate is welded at the upper end of the heating chamber cylinder body; a lower tube plate is welded at the lower end of the heating chamber cylinder body; a plurality of fan-shaped upper heat exchange tube configuration regions are distributed on the upper tube plate, and consist of a plurality of through holes equivalent to the outer diameters of heat exchange tubes; a plurality of fan-shaped lower heat exchange tube configuration regions and through holes for forming the lower heat exchange tube distribution regions are distributed and arranged in the lower tube plate corresponding to the upper tube plate; the heat exchange tubes pass through the corresponding through holes in the upper and lower heat exchange tube distribution regions and are respectively welded together with the upper tube plate and the lower tube plate; the upper tube plate, the lower tube plate, the heating chamber cylinder body and the tube walls of the heat exchange tubes form a heating chamber. Condensation water tubes are welded between adjacent lower heat exchange tube configuration regions, corresponding to the lower tube plate, in the heating chamber, so that the problem that leakage can easily happen at the weld joints of welding angles of the condensation water tubes is solved.

Description

A kind of tube-type down-flow evaporator
Technical field
The utility model relates to a kind of tube-type down-flow evaporator.
Background technology
At present, tube type falling-film evaporation is indispensable production process in alumina producing industry, and its main purpose is to carry out evaporation and concentration to producing unnecessary moisture in solution, improves the concentration of solution, makes it to meet the requirement of production technology to solution concentration.The operation principle of tube-type down-flow evaporator is: by pass into steam in heating clamber, the production liquid in exchange heat pipe carries out heating evaporation.
In the heating clamber of existing tube-type down-flow evaporator, angle welding place and the condensate pipe of heating clamber stack shell and lower perforated plate are welded to connect.In actual production process, owing to producing the not equal reason of solution corrosion and heat exchanger tube and the heating clamber housing temperature difference coefficient of expansion, easily make the angle welding place that condensate pipe is connected with heating clamber housing generate crackle, cause condensed water seepage.Adopt the condensate pipe of traditional S shape structure, according to the structural relation of itself and stack shell, lower perforated plate, when carrying out destressing heat treatment, the commissure of condensate pipe is difficult to reach technological requirement, thereby in use this place is easily corroded, and causes condensed water seepage.
Utility model content
The technical problem that the utility model solves: provide a kind of condensed water to be not easy the tube-type down-flow evaporator of seepage.
The technical scheme that the utility model provides: a kind of tube-type down-flow evaporator, comprise heating clamber housing, in heating clamber housing, be provided with many heat exchanger tubes, heating clamber housing comprises heating clamber stack shell, the upper end of heating clamber stack shell is welded with upper perforated plate, the lower end of heating clamber stack shell is welded with lower perforated plate, on upper perforated plate, be distributed with several fan-shaped upper heat exchanger tube layout area, fan-shaped upper heat exchanger tube layout area is comprised of a plurality of perforation suitable with heat exchanger tube external diameter, on lower perforated plate, be distributed with at least two fan-shaped lower heat exchanger tube layout area, fan-shaped lower heat exchanger tube layout area is comprised of a plurality of perforation suitable with heat exchanger tube external diameter, upper heat exchanger tube layout area and lower heat exchanger tube layout area are corresponding, on composition, the perforation of the perforation of heat exchanger tube layout area and the lower heat exchanger tube layout area of composition is corresponding one by one, heat exchanger tube is through in correspondence, correspondence in lower heat exchanger tube layout area perforation respectively with upper, lower perforated plate welds together, upper perforated plate, lower perforated plate, between heating clamber stack shell and heat exchanger tube tube wall, form heating clamber, in heating clamber, on corresponding lower perforated plate, between adjacent lower heat exchanger tube layout area, be welded with a condensate pipe.
Described condensate pipe adopts L shaped structure.
Described condensate pipe and the weld seam between lower perforated plate are heat treated through destressing.
Perforation in described upper and lower heat exchanger tube layout area is all equally distributed.
Described fan-shaped upper heat exchanger tube layout area is uniformly distributed around upper perforated plate center, and described fan-shaped lower heat exchanger tube layout area is uniformly distributed around lower perforated plate center.
The quantity of described upper heat exchanger tube layout area is that three and area equate, the quantity of lower heat exchanger tube layout area is also that three and area equate.
The beneficial effect that the utility model brings: be chosen on the corresponding lower perforated plate of heating clamber of tube-type down-flow evaporator and weld condensate pipe between adjacent lower heat exchanger tube layout area, solve original condensate pipe welding angle welding place and easily occurred the problem of leaking, and do not affected the area of heat exchanger tube layout area in heating clamber.
Condensate pipe adopts L shaped structural shape, and the Technology for Heating Processing of being convenient to condensate pipe is processed, and prevents traditional S shape condensate pipe and is corroded because heat treatment is difficult to reach requirement, the problem of easily leaking.
Weld seam between condensate pipe and lower perforated plate, after destressing heat treatment, has been avoided main stress and the weld seam that causes damages, and makes condensed water can not occur seepage because of bead crack.
Upper and lower heat exchanger tube layout area is uniformly distributed around the center of upper and lower tube sheet respectively, and the perforation in upper and lower heat exchanger tube layout area is uniformly distributed, can make the heat exchanger tube being arranged in tube-type down-flow evaporator evenly arrange, thereby the uniform liquid in heat exchanger tube is heated, improves the production technology quality of tube-type down-flow evaporator.
Accompanying drawing explanation
Fig. 1 is structure chart of the present utility model;
Fig. 2 is the A-A profile of Fig. 1;
In Fig. 1-Fig. 2: 1, heating clamber stack shell, 2, upper perforated plate, 3, lower perforated plate, 4, lower heat exchanger tube layout area, 6, condensate pipe.
The specific embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present utility model in detail.
As illustrated in fig. 1 and 2, a kind of tube-type down-flow evaporator, comprise heating clamber housing, in heating clamber housing, be provided with many heat exchanger tubes, heating clamber housing comprises upper end cover, bottom end cover and be arranged on upper end cover and bottom end cover between heating clamber stack shell 1, the upper end of heating clamber stack shell 1 is welded with upper perforated plate 2, the lower end of heating clamber stack shell 1 is welded with lower perforated plate 3, on upper perforated plate 2, be distributed with several fan-shaped upper heat exchanger tube layout area, fan-shaped upper heat exchanger tube layout area is comprised of a plurality of perforation suitable with heat exchanger tube external diameter, on lower perforated plate 3, be distributed with at least two fan-shaped lower heat exchanger tube layout area 4, fan-shaped lower heat exchanger tube layout area 4 is comprised of a plurality of perforation suitable with heat exchanger tube external diameter, upper heat exchanger tube layout area and lower heat exchanger tube layout area 4 correspondences, on composition, the perforation of the perforation of heat exchanger tube layout area and the lower heat exchanger tube layout area 4 of composition is corresponding one by one, heat exchanger tube is through corresponding upper heat exchanger tube layout area, the perforation of correspondence in lower heat exchanger tube layout area 4 and respectively with upper perforated plate 2, lower perforated plate 3 welds together, upper perforated plate 2, lower perforated plate 3, between heating clamber stack shell 1 and heat exchanger tube tube wall, form heating clamber, in heating clamber, on corresponding lower perforated plate 3, between certain two adjacent lower heat exchanger tube layout area 4, be welded with a condensate pipe 6, condensate pipe 6 is communicated with the external world of heating clamber and evaporimeter.
Condensate pipe 6 adopts L shaped structure, the vertical section of condensate pipe 6 and lower perforated plate 3 weld together, and its outlet parallel with lower perforated plate 3 of the horizontal segment of condensate pipe 6 is towards the outside of stack shell 1, compare with traditional S shape condensate pipe, when heat-treating, according to the structural relation of itself and stack shell 1, lower perforated plate 3, the technique compliance rate of weld seam is greatly improved, thereby avoided in use, because commissure is easily corroded, causing the problem of condensed water seepage.
Weld seam between condensate pipe 4 and lower perforated plate 3 is carried out to destressing heat treatment, the weld seam of having avoided stress as far as possible and having caused damages, make condensed water can not occur seepage because of bead crack, affect the normal use of heating clamber, and adopt the heat treated words of this structure destressing, easy to operate, can make the weld seam between condensate pipe 4 and lower perforated plate 3 after destressing, reach technological requirement, thereby guarantee that the weld seam at this place there will not be crackle and causes condensed water seepage.
In order to improve the production technology quality of tube-type down-flow evaporator, the production uniform liquid in every heat exchanger tube in tube-type down-flow evaporator is heated.In actual production, can upper heat exchanger tube layout area, the perforation in lower heat exchanger tube layout area 4 is set to be uniformly distributed, fan-shaped upper heat exchanger tube layout area is arranged to be uniformly distributed around upper perforated plate center simultaneously, fan-shaped lower heat exchanger tube layout area 4 is arranged to be uniformly distributed around lower perforated plate center, so just can make heat exchanger tube be uniformly distributed, thereby guarantee to produce the thermally equivalent of liquid.
The preferred version that the present embodiment adopts is that the quantity of heat exchanger tube layout area on described is as shown in Figure 2 that three and area equate, the quantity of lower heat exchanger tube layout area 4 is also that three and area equate.The benefit of arranging is like this to produce under the prerequisite that uniform liquid is heated not affecting, and increases the quantity of heat exchanger tube, improves the production efficiency of tube-type down-flow evaporator.

Claims (6)

1. a tube-type down-flow evaporator, comprise heating clamber housing, in heating clamber housing, be provided with many heat exchanger tubes, heating clamber housing comprises heating clamber stack shell, the upper end of heating clamber stack shell is welded with upper perforated plate, the lower end of heating clamber stack shell is welded with lower perforated plate, on upper perforated plate, be distributed with at least two fan-shaped upper heat exchanger tube layout area, fan-shaped upper heat exchanger tube layout area is comprised of a plurality of perforation suitable with heat exchanger tube external diameter, on lower perforated plate, be distributed with at least two fan-shaped lower heat exchanger tube layout area, fan-shaped lower heat exchanger tube layout area is comprised of a plurality of perforation suitable with heat exchanger tube external diameter, upper heat exchanger tube layout area and lower heat exchanger tube layout area are corresponding, on composition, the perforation of the perforation of heat exchanger tube layout area and the lower heat exchanger tube layout area of composition is corresponding one by one, heat exchanger tube is through in correspondence, correspondence in lower heat exchanger tube layout area perforation respectively with upper, lower perforated plate welds together, upper perforated plate, lower perforated plate, between heating clamber stack shell and heat exchanger tube tube wall, form heating clamber, it is characterized in that: in heating clamber, on corresponding lower perforated plate, between adjacent lower heat exchanger tube layout area, be welded with a condensate pipe.
2. a kind of tube-type down-flow evaporator according to claim 1, is characterized in that: described condensate pipe adopts L shaped structure.
3. a kind of tube-type down-flow evaporator according to claim 1 and 2, is characterized in that: described condensate pipe and the weld seam between lower perforated plate are heat treated through destressing.
4. a kind of tube-type down-flow evaporator according to claim 1 and 2, is characterized in that: the perforation in described upper and lower heat exchanger tube layout area is all equally distributed.
5. a kind of tube-type down-flow evaporator according to claim 4, is characterized in that: described fan-shaped upper heat exchanger tube layout area is uniformly distributed around upper perforated plate center, and described fan-shaped lower heat exchanger tube layout area is uniformly distributed around lower perforated plate center.
6. a kind of tube-type down-flow evaporator according to claim 5, is characterized in that: the quantity of described upper heat exchanger tube layout area is that three and area equate, the quantity of lower heat exchanger tube layout area is also that three and area equate.
CN201320276303.7U 2013-05-18 2013-05-18 Tubular falling-film evaporator Expired - Fee Related CN203525344U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320276303.7U CN203525344U (en) 2013-05-18 2013-05-18 Tubular falling-film evaporator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320276303.7U CN203525344U (en) 2013-05-18 2013-05-18 Tubular falling-film evaporator

Publications (1)

Publication Number Publication Date
CN203525344U true CN203525344U (en) 2014-04-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN203525344U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103285607A (en) * 2013-05-18 2013-09-11 苏州市中衡压力容器制造有限公司 Pipe-type falling-film evaporator
CN104128012A (en) * 2014-08-26 2014-11-05 南通赛孚机械设备有限公司 Material distribution system of falling-film evaporator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103285607A (en) * 2013-05-18 2013-09-11 苏州市中衡压力容器制造有限公司 Pipe-type falling-film evaporator
CN104128012A (en) * 2014-08-26 2014-11-05 南通赛孚机械设备有限公司 Material distribution system of falling-film evaporator
CN104128012B (en) * 2014-08-26 2016-01-20 南通赛孚机械设备有限公司 A kind of falling film evaporator material distributing system

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

Granted publication date: 20140409

Termination date: 20160518

CF01 Termination of patent right due to non-payment of annual fee