CN201569349U

CN201569349U - Flat-round interlaced tubular heat exchanger

Info

Publication number: CN201569349U
Application number: CN 200920288131
Authority: CN
Inventors: 张迎恺; 蹇江海; 高丽萍; 刘立; 李宇; 高磊; 于显庆; 梁学峰; 任立阳; 周力; 吴振林; 张莹莹; 王娜; 霍欢
Original assignee: FUSHUN CHEMICAL MACHINERY EQUIPMENTS MANUFACTURING Co Ltd; Sinopec Engineering Inc; Liaoning Shihua University
Priority date: 2009-12-17
Filing date: 2009-12-17
Publication date: 2010-09-01
Anticipated expiration: 2019-12-17

Abstract

The utility model belongs to the technical field of chemical equipment manufacture and aims at overcoming the low heat transfer rate of the traditional heat exchanger. The utility model discloses a flat-round interlaced tubular heat exchanger, which includes a shell, tubular plates, heat exchange tubes and a clamping band. The heat exchange tube adopts a flat-round interlaced tube; the two ends of the flat-round interlaced tube are fixed on the tubular plate and a round tube is arranged at the connecting part between the flat-round interlaced tube and the tubular plate; neighboring heat exchange tubes are pointedly contacted along the long axis of the maximum flat tube and are tied together by the clamping band for fixation. The flat-round interlaced tubular heat exchanger does not have a baffle and dead floating area, and simultaneously reduces the cost. A tube pass liquid and a shell pass liquid generate complex floating which is mainly characterized as wave mode; liquids inside and outside the heat exchange tubes form pure countercurrent to obtain stronger stirring, thereby enhancing the heat transfer process at a larger extent, and improving the heat exchange efficiency. As the tube models are continuously changed, the surface of the tube wall can be automatically cleaned under the effect of the shell pass mediums and is hard to form scale. The heat exchanger can be a floating-head type heat exchanger, and a fixed tube plate type heat exchanger. The tube pass and the shell pas can be single pass and multi-passes respectively.

Description

A kind of oblate staggered pipe heat exchanger

One, technical field

The utility model belongs to chemical industry equipment manufacturing technology field, is specifically related to a kind of heat exchanger as petrochemical equipment.

Two, background technology

The world today, owing to fast development economic and industry, countries in the world generally are faced with the shortage of energy problem, tap a new source of energy and how efficiently to utilize to have the common concern that the energy has been subjected to countries in the world now.Because the extensive use of heat exchanger in industrial production, the new technology that improves heat exchanger efficiency, augmentation of heat transfer, research augmentation of heat transfer becomes the focus of people's growing interest.At present, the heat exchanger tube that has used divides from cross sectional shape pipe and flat tube, seen light pipe and screwed pipe etc. from extending, the heat exchanger tube that these structures are different all has its advantage separately in form, but is awaiting further to improve on the heat exchange efficiency and in the utilization of material.

Three, summary of the invention

In order to overcome the heating rate of passing at the low of traditional heat exchangers, the utility model is a kind of oblate staggered pipe heat exchanger, and under the situation that does not change traditional heat exchanger tube centre-to-centre spacing, this heat exchanger has the heat exchange efficiency higher than pipe.

The technical scheme that its technical problem that solves the utility model adopts is: heat exchanger tube adopts oblate staggered pipe, it is by flat tube, pipe, flat tube, flat tube, pipe, flat tube forms successively, each segment length is identical, and two flat tubes adjacent with pipe are vertical mutually, the tapered pipe that transits to gradually, the also tapered place, maximum cross-section each other that transits to gradually of adjacent two flat tubes, dimensionally stable changes, each flat tube correspondingly-sized equates that maximum flat tube perimeter of section is identical with pipe, and oblate staggered pipe two ends are fixed on the tube sheet, adopt the corner square arrangement, with the tube sheet junction be pipe, heat exchanger tube contacts along maximum flat tube long axis direction point, plays mutual supporting role.Heat exchanger tube is pricked tired the binding together of hoop by several groups and is fixed, and oblate staggered pipe heat exchanger shell side does not have deflection plate, does not have flow dead.Because cast constantly changes, smooth transition between each section pipe does not have fold, and resistance is little, it is that the complexity of principal character flows that tube side fluid and shell-side fluid all produce wave, especially in cast variation place, impulse force is bigger, forms staggered turbulent flow, obtain stronger stirring, thereby strengthened diabatic process largely, and tube wall clean surface voluntarily under the effect of shell side medium, less scaling.By some contact, and shell-side fluid mainly does vertically to flow, and forms pure adverse current with liquid in pipe, not only improved the efficient of heat exchanger tube but also can well overcome induced vibration, improved the feasibility and the reliability of its operation between the heat exchanger tube.This oblate staggered pipe heat exchanger can be fixed tube-sheet exchanger, movable tube sheets heat exchanger, and their tube side and shell side can be respectively one way and multipass.

Compare with traditional shell-and-tube heat exchanger, the utility model has the advantages that:

1. oblate staggered pipe heat exchanger heat exchanger tube adopts oblate staggered pipe, and the inside and outside liquid of heat exchanger tube forms pure adverse current, can well overcome induced vibration, therefore can improve the thermal efficiency.

2. it is that the complexity of principal character flows that oblate staggered pipe heat exchanger tube side and shell-side fluid all produce with the wave, and especially in cast variation place, impulse force is bigger, obtains stronger disturbance, the formation turbulent flow, thus strengthened diabatic process largely.

3. because shell side does not have deflection plate, the flow resistance of shell side is very little, and there is not flow dead in shell side, and simultaneously tube wall clean surface voluntarily under the effect of shell side medium is less scaling.Owing to do not have deflection plate, greatly reduce cost and man-hour again.

Four, description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the A-A partial section of Fig. 1

Fig. 4 is the B-B partial section of Fig. 1

Fig. 5 is the C-C partial section of Fig. 1.

Fig. 6 is the front view of oblate staggered pipe.

Fig. 7 is the D-D sectional view of Fig. 6

Fig. 8 is the E-E sectional view of Fig. 6

Fig. 9 is the F-F sectional view of Fig. 6

1. tube sheets among the figure, 2. oblate staggered pipe is 3. pricked hoop, 4. tube sheet.

Five, the specific embodiment

Oblate staggered pipe heat exchanger is based on the conventional tube shell heat exchanger, change the pipe in the shell-and-tube heat exchanger into oblate staggered pipe as heat exchange element, there is not deflection plate in the tube bank, the contact of heat exchanger tube holding point, play mutual supporting role, and it is mobile to form wave between heat exchanger tube, and other structure all adopts the part of shell-and-tube heat exchanger.

In Fig. 1, heat exchanger tube adopts oblate staggered pipe (2), oblate staggered pipe (2) is formed successively by flat tube, pipe, flat tube, flat tube, pipe, flat tube, each segment length is identical, and two flat tubes adjacent with pipe are vertical mutually, the tapered pipe that transits to gradually of two flat tubes, the also tapered place, maximum cross-section each other that transits to gradually of adjacent two flat tubes.Oblate staggered pipe two ends are fixed on the tube sheet, adopt the corner square arrangement, and for the ease of being connected of heat exchanger tube and tube sheet (1), (4), the two ends of oblate staggered pipe (2) are pipe.Heat exchanger tube contacts along maximum flat tube long axis direction point, plays mutual supporting role.When oblate staggered pipe heat exchanger tube bank is assembled, the oblate staggered pipe of every installation one row, turne tube guarantees that the adjacent pipe on each plane contacts at flat tube major axis maximum point.For the rigidity needs of restraining, in tube bank, be furnished with several roads and prick hoop (3) to fix tube bank, guarantee interbank maintenance closely contact and the convenient lifting of restraining.

Claims

1. an oblate staggered pipe heat exchanger comprises housing, tube sheet, heat exchanger tube, bundle hoop, it is characterized in that: heat exchanger tube adopts oblate staggered pipe, does not have deflection plate, and oblate staggered Guan Youzha banding tightly is stranded and binds together.

2. oblate staggered pipe heat exchanger according to claim 1, it is characterized in that: heat exchanger tube adopts oblate staggered pipe, it is by flat tube, pipe, flat tube, flat tube, pipe, flat tube forms successively, each segment length is identical, and two flat tubes adjacent with pipe are vertical mutually, the tapered pipe that transits to gradually, the also tapered place, maximum cross-section each other that transits to gradually of adjacent two flat tubes, each flat tube correspondingly-sized equates, maximum flat tube perimeter of section is identical with pipe, and oblate staggered pipe two ends are fixed on the tube sheet, with the tube sheet junction be pipe, heat exchanger tube contacts along maximum flat tube long axis direction point, plays mutual supporting role.

3. oblate staggered pipe heat exchanger according to claim 1 is characterized in that: oblate staggered pipe heat exchanger does not have deflection plate, does not have flow dead, with pricking hoop tube bank is tied together, with fixing tube bank.