CN209672918U

CN209672918U - The exhaust structure of vertical shell-and-tube heat exchanger

Info

Publication number: CN209672918U
Application number: CN201920090729.0U
Authority: CN
Inventors: 高欢; 杨桂春; 唐辉永; 徐儒庸; 岳国印; 赵栓柱; 朱为明; 黄佳平; 刘建国; 杨庆兰
Original assignee: China Huanqiu Engineering Co Ltd
Current assignee: China National Petroleum Corp; China Huanqiu Contracting and Engineering Corp
Priority date: 2019-01-18
Filing date: 2019-01-18
Publication date: 2019-11-22
Anticipated expiration: 2029-01-18

Abstract

The utility model provides a kind of exhaust structure of vertical shell-and-tube heat exchanger, the vertical shell-and-tube heat exchanger has upper tube box, shell-side cylinder and the lower tube box set gradually, it is isolated between upper tube box and shell-side cylinder with upper perforated plate, it is isolated between lower tube box and shell-side cylinder with lower perforated plate, more heat exchanger tubes are fixed between upper perforated plate and lower perforated plate, upper tube box is connected to by the more heat exchanger tubes with lower tube box；Position aperture on the barrel of shell-side cylinder apart from upper perforated plate lower surface certain altitude and the tracheae that runs in, one end that the exhaust pipe protrudes into the shell-side cylinder are bent upwards and extend proximate to the position of upper perforated plate lower surface.The utility model may be implemented to drain, and do not damage upper perforated plate, no matter upper perforated plate is that thick tube sheet or thin tubesheet are applicable, and the position of opening on the barrel of shell-side cylinder apart from upper perforated plate lower surface farther out, so that the welding processing operating distance upper perforated plate of exhaust pipe has enough distances, the welding is smooth.

Description

The exhaust structure of vertical shell-and-tube heat exchanger

Technical field

The utility model relates to a kind of exhaust structures of vertical shell-and-tube heat exchanger, are mainly used in petrochemical plant Vertical shell-and-tube heat exchanger shell side exhaust.

Background technique

Vertical shell-and-tube heat exchanger, structure is as shown in Figure 1, have the upper tube box 1 set gradually, shell-side cylinder 2 under Bobbin carriage 3 is isolated between upper tube box 1 and shell-side cylinder 2 with upper perforated plate 4, between lower tube box 3 and shell-side cylinder 2 with lower perforated plate 5 every From being fixed with more heat exchanger tubes 6 between upper perforated plate 4 and lower perforated plate 5, the more heat exchanger tubes 6 are by upper tube box 1 and lower tube box 3 Connection is got up, and for passing through for first fluid, second fluid, first fluid and second fluid have been additionally flowed through in shell-side cylinder 2 Heat exchange can be completed in shell-side cylinder 2.

If there is gas in second fluid, it is easy to be deposited in the top of shell-side cylinder 2, is formed " air cushion ", hinder shell side cylinder Heat exchange efficiency between second fluid in body 2 and upper tube box 1, therefore, it is necessary to discharge the gas at 2 top of shell-side cylinder in time Fall.

In order to realize vertical shell-and-tube heat exchanger the top of shell-side cylinder 2 gas discharge, need to be arranged exhaust structure, one As in the case of, exhaust structure can be realized by three kinds of modes:

It (1) as shown in Fig. 1, Figure 1A, is drilled on upper perforated plate 4, this implementation method is simple, can not install other dresses It sets, only drills on upper perforated plate 4.

It (2) is that aperture is taken over again on the barrel in shell-side cylinder 2 close to 4 lower surface of upper perforated plate as shown in Fig. 2, Fig. 2A, this Kind implementation method is simple and not damaged to upper perforated plate 4.

It (3) is to open half bore on the barrel of shell-side cylinder 2 to take over again, this implementation method can be real as shown in Fig. 3, Fig. 3 A It now drains completely, and not damaged to upper perforated plate 4.

Drawback of the prior art is that:

(1) for the tube sheet of thinner thickness, drilling weakens seriously tubesheet intensity, does not allow to drill, or need to draw Shi Wufa installation adapter tube causes (1) kind exhaust structure not applicable.

(2) for thick tube plate structure, if not allowing to drill, it is not applicable that above-mentioned (1) plants exhaust structure.

(3) exhaust structure taken over again of aperture on the barrel close to upper perforated plate, due to adapter tube and barrel soldering need away from It is maintained a certain distance from tube sheet, therefore cannot achieve liquid and empty completely, therefore when exhaust requirements are higher, the cannot be used (2) exhaust structure is planted

(4) it requires to bear the operating conditions such as high pressure, corrosion and uses low-temperature steel, the heat exchanger of chrome molybdenum steel material, tube sheet With the special construction requirement of shell-side cylinder link position, do not allow to open half bore in the position close to tube sheet, (3) plant exhaust structure Be not suitable for such heat exchanger.

Utility model content

The purpose of the utility model is to provide a kind of exhaust structure of vertical shell-and-tube heat exchanger, it had been applicable to it both thin Tube sheet is equally applicable to thick tube sheet, and all has very strong applicability to other various operating conditions.

In order to achieve the above purposes, the technical solution adopted by the utility model is:

A kind of exhaust structure of vertical shell-and-tube heat exchanger, the vertical shell-and-tube heat exchanger have the upper tube set gradually Case, shell-side cylinder and lower tube box, are isolated between upper tube box and shell-side cylinder with upper perforated plate, following between lower tube box and shell-side cylinder Tube sheet isolation, is fixed with more heat exchanger tubes between upper perforated plate and lower perforated plate, and the more heat exchanger tubes are by upper tube box and lower tube box Connection is got up；It is characterized by:

Position aperture on the barrel of shell-side cylinder apart from upper perforated plate lower surface certain altitude and the tracheae that runs in, the row One end that tracheae protrudes into the shell-side cylinder is bent upwards and extends proximate to the position of upper perforated plate lower surface, in connecing for the end Pipe side wall fluting, in favor of gas discharge, fluting area can require to determine according to shell side medium and discharge amount.

The exhaust structure of the vertical shell-and-tube heat exchanger, in which: the periphery of the upper perforated plate is with flexible mistake Section is crossed to be connected with the shell-side cylinder.

The exhaust structure of the vertical shell-and-tube heat exchanger, in which: the material of the exhaust pipe is identical to the heat exchange The material of pipe.

Utility model has the advantages that may be implemented to drain, and upper perforated plate is not damaged, no matter upper perforated plate is thick tube sheet Or thin tubesheet is applicable, and the position of opening on the barrel of shell-side cylinder apart from upper perforated plate lower surface farther out so that row The welding processing operating distance upper perforated plate of tracheae has enough distances, and the welding is smooth.

Detailed description of the invention

Fig. 1, Figure 1A are the schematic diagram and its partial enlarged view of the exhaust structure of the first vertical shell-and-tube heat exchanger；

Fig. 2, Fig. 2A are the schematic diagram and its partial enlarged view of the exhaust structure of second of vertical shell-and-tube heat exchanger；

Fig. 3, Fig. 3 A are the schematic diagram and its partial enlarged view of the exhaust structure of the third vertical shell-and-tube heat exchanger；

Fig. 4, Fig. 4 A are schematic diagram and its part of the exhaust structure of vertical shell-and-tube heat exchanger provided by the utility model Enlarged drawing.

Description of symbols: upper tube box 1；Shell-side cylinder 2；Lower tube box 3；Upper perforated plate 4；Changeover portion 41；Lower perforated plate 5；Heat exchange Pipe 6；Exhaust pipe 7.

Specific embodiment

As shown in Fig. 4, Fig. 4 A, the utility model provides a kind of exhaust structure of vertical shell-and-tube heat exchanger, described vertical Shell-and-tube heat exchanger has the upper tube box 1 set gradually, shell-side cylinder 2 and lower tube box 3, between upper tube box 1 and shell-side cylinder 2 with Upper perforated plate 4 is isolated, and is isolated between lower tube box 3 and shell-side cylinder 2 with lower perforated plate 5, is fixed between upper perforated plate 4 and lower perforated plate 5 More heat exchanger tubes 6, upper tube box 1 is connected to by the more heat exchanger tubes 6 with lower tube box 3, for passing through for first fluid, in shell Second fluid is additionally flowed through in journey cylinder 2, first fluid and second fluid can complete heat exchange in shell-side cylinder 2；

In order to realize the gas discharge at 2 top of shell-side cylinder, the utility model is on the barrel of shell-side cylinder 2 apart from upper tube The position aperture of 4 lower surface certain altitude of the plate and tracheae 7 that runs in, one end that the exhaust pipe 7 protrudes into the shell-side cylinder 2 are upward It is bent and extends proximate to the position of 4 lower surface of upper perforated plate, the adapter tube side wall in the end is slotted, and in favor of gas discharge, is opened Groove area can require to determine according to shell side medium and discharge amount.

Once air accumulation will be connected on the top of shell-side cylinder 2 with the upper end of the exhaust pipe 7 and side wall fluting It is logical, then in shell-side cylinder 2 under the pressure effect of liquid, be downwardly and outwardly discharged along the exhaust pipe 7 shell-side cylinder 2 it Outside, therefore the utility model may be implemented to drain.

The utility model does not damage upper perforated plate 4, and no matter upper perforated plate 4 is that thick tube sheet or thin tubesheet are applicable, and shell Position of opening on the barrel of journey cylinder 2 apart from 4 lower surface of upper perforated plate farther out so that the welding processing operating distance of exhaust pipe 7 Upper perforated plate 4 has enough distances, and the welding is smooth.

In the present embodiment, the upper perforated plate 4 preferably uses thin tubesheet structure, that is, the periphery of the upper perforated plate 4 is to have Flexible changeover portion 41 is connected with the shell-side cylinder, and the changeover portion 41 is with higher flexible (i.e. flexible), is equivalent to It is provided with expansion joint in shell-side cylinder 2, displacement caused by thermal expansion difference between heat exchanger tube 6 and shell, pressure can be compensated Difference reduces upper perforated plate 4,5 edge of lower perforated plate secondary stress as caused by compatibility of deformation.

Moreover, the material of the exhaust pipe 7 is preferably using the material for being identical to the heat exchanger tube 6.

It is described above to be merely exemplary for the utility model, and not restrictive, those of ordinary skill in the art Understand, without departing from the spirit and scope defined by the claims, can many modifications may be made, variation or it is equivalent, but It falls within the protection scope of the utility model.

Claims

1. a kind of exhaust structure of vertical shell-and-tube heat exchanger, the vertical shell-and-tube heat exchanger has the upper tube set gradually Case, shell-side cylinder and lower tube box, are isolated between upper tube box and shell-side cylinder with upper perforated plate, following between lower tube box and shell-side cylinder Tube sheet isolation, is fixed with more heat exchanger tubes between upper perforated plate and lower perforated plate, and the more heat exchanger tubes are by upper tube box and lower tube box Connection is got up；It is characterized by:

Position aperture on the barrel of shell-side cylinder apart from upper perforated plate lower surface certain altitude and the tracheae that runs in, the exhaust pipe The one end for protruding into the shell-side cylinder is bent upwards and extends proximate to the position of upper perforated plate lower surface.

2. the exhaust structure of vertical shell-and-tube heat exchanger according to claim 1, it is characterised in that: the week of the upper perforated plate While being connected with flexible changeover portion with the shell-side cylinder.

3. the exhaust structure of vertical shell-and-tube heat exchanger according to claim 1, it is characterised in that: the material of the exhaust pipe Matter is identical to the material of the heat exchanger tube.