CN207298886U - A kind of blossom type comb waste heat boiler - Google Patents

A kind of blossom type comb waste heat boiler Download PDF

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Publication number
CN207298886U
CN207298886U CN201721262572.2U CN201721262572U CN207298886U CN 207298886 U CN207298886 U CN 207298886U CN 201721262572 U CN201721262572 U CN 201721262572U CN 207298886 U CN207298886 U CN 207298886U
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China
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tube sheet
connection
bobbin carriage
cylinder
temperature
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CN201721262572.2U
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Chinese (zh)
Inventor
王雪冬
姜波
刘维红
沈结
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China Chengda Engineering Co Ltd
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China Chengda Engineering Co Ltd
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Abstract

The utility model discloses a kind of blossom type comb waste heat boiler, including bobbin carriage internal structure, bobbin carriage cylinder is connected by tube sheet with shell-side cylinder, some U heat exchanges are provided with the shell-side cylinder, the input end centralized arrangement of the U heat exchange forms high-temperature medium inlet region in the centre of tube sheet, the high-temperature medium inlet region is connected with high-temperature medium entrance, the port of export centralized arrangement of the U heat exchange forms cryogenic media outlet area in the edge of tube sheet, and the cryogenic media outlet area is connected with cryogenic media outlet.The utility model waste heat boiler by using blossom type piping mode, realize that high-temperature technology medium enters heat exchanger tube from the center of tube sheet, after heat exchanger tube exchanges heat, low temperature process medium is entered bobbin carriage by the edge heat exchanger tube of tube sheet and is discharged, the mode that i.e. media center goes out into, surrounding, it can be substantially reduced so as to the design temperature of whole pressure-bearing bobbin carriage, the class of bobbin carriage material can be reduced, save the investment of whole equipment.

Description

A kind of blossom type comb waste heat boiler
Technical field
The utility model belongs to technical field of chemical, more particularly to a kind of blossom type comb waste heat boiler.
Background technology
Waste heat boiler is widely used in a variety of chemical process devices, is mainly produced using the heat of high-temperature technology medium Steam, achievees the purpose that to save the energy, to improve the heat utilization rate of process unit.But due to the spy of chemical plant installations high temperature and pressure Point so that the process conditions of waste heat boiler are very harsh, and the waste heat boiler of usual chemical field is under high temperature and high pressure condition Work, since waste heat boiler applying working condition is complicated, process conditions are harsh, and exchanger tubes and tubesheets often occur in the process of running The problems such as welding point leakage, difficult dismounting maintenance.Therefore it is the equipment that accident rate is higher in each device, and it is more concerned Particularly serious equipment.The waste heat boiler of China's self design is usually only applicable to midget plant, and foreign countries introduce large-scale useless Heat boiler, investment is higher, and since structure is more complicated, there is also the problem of checking maintenance.And with the maximization of device, I The waste heat boiler structure of the midget plant of state's self design has been unable to the requirement of adaptive device maximization.
Utility model content
The goal of the invention of the utility model is:For above-mentioned problem, there is provided a kind of simple in structure, maintenance side Just, high-temperature high-pressure craft medium is resistant to, and disclosure satisfy that larger-scale unit and ensure the waste heat boiler of device continuous and steady operation Stove.
What the technical solution of the utility model was realized in:A kind of blossom type comb waste heat boiler, including bobbin carriage cylinder And shell-side cylinder, the bobbin carriage cylinder are connected by tube sheet with shell-side cylinder, some U-shaped change is provided with the shell-side cylinder Heat pipe, it is characterised in that:The input end centralized arrangement of the U heat exchange forms high-temperature medium entrance in the centre of tube sheet Area, the high-temperature medium inlet region are connected with high-temperature medium entrance, and the port of export centralized arrangement of the U heat exchange is in tube sheet Edge forms cryogenic media outlet area, and the cryogenic media outlet area is connected with cryogenic media outlet.
Blossom type comb waste heat boiler described in the utility model, the inlet end and an outlet end point of its U heat exchange Do not connected by internal bore welding with some tubesheet holes set on tube sheet, i.e., described U heat exchange is used in shell-side with tube sheet and docked Welding, is provided with internal lining pipe in the tubesheet holes that the input end with U heat exchange connects, and tubesheet holes is inserted into described internal lining pipe one end Inside is connected with U heat exchange end, its other end is connected with high-temperature medium entrance.
Blossom type comb waste heat boiler described in the utility model, it is provided with center tube sheet in the bobbin carriage cylinder, Some detachable casings connected with internal lining pipe are provided between the center tube sheet and tube sheet, the detachable casing passes through Center tube sheet and the detachable lining cylinder connection being connected with the tube sheet of center, the detachable lining cylinder and high-temperature medium entrance company It is logical.
Blossom type comb waste heat boiler described in the utility model, its described detachable lining cylinder pass through expansion structure and height Warm medium inlet connection.
Blossom type comb waste heat boiler described in the utility model, it is provided between the center tube sheet and tube sheet and leads Flow cartridge, forms circular passage between guide shell and the bobbin carriage cylinder, the circular passage is connected with cryogenic media outlet area, institute State and through hole is provided with guide shell, the cryogenic media of the cryogenic media outlet area outflow can flow through whole tube sheet surface.
The utility model is realized that high-temperature technology medium enters from the center of tube sheet and is changed by using the piping mode of blossom type Heat pipe, after heat exchanger tube exchanges heat, low temperature process medium is entered bobbin carriage by the edge heat exchanger tube of tube sheet and is discharged, i.e. media center The mode gone out into, surrounding, so that the design temperature of whole pressure-bearing bobbin carriage can substantially reduce, can reduce the class of bobbin carriage material, Save the investment of whole equipment.
The utility model compared with prior art, has following technique effect:
1st, the entrance of the high-temperature technology medium of the utility model concentrates on centre so that the center inside lining sleeve of entrance Diameter reduces, easy to the design of structure and the facility of checking maintenance;Meanwhile low temperature process medium enters the circular passage of bobbin carriage, The design temperature of whole pressure-bearing bobbin carriage can also substantially reduce, and can reduce the class of bobbin carriage material, save the throwing of whole equipment Money.
2nd, the structure design of the utility model can save cloth tube space, and heat exchanger tube is covered with equipment to greatest extent, Device diameters are reduced as far as possible, reduce equipment investment.
3rd, the utility model can be by the pipe fitting of the high-temperature technology medium of import and low-temperature outlet medium after cooling Design separates, and reduces the quantity of high-temperature medium part pipe fitting, the part easily gone wrong is reduced at least.
4th, the arrangement of the utility model heat exchanger tube can use the arrangement of the diversified forms such as square, triangle, to meet The needs of industrial analysis.
5. the utility model adds sleeve structure using the special internal bore welding of exchanger tubes and tubesheets, High Temperature Gas is efficiently solved The destruction that body exchange heat pipe is connected with tube sheet pipe fitting, pipe fitting can be arranged on shell-side and ducked in drink by internal bore welding, significantly slow The influence of high-temperature gas Welded Joints is solved.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the enlarged drawing of the utility model middle pipe joint.
Fig. 3 is the sectional view of the utility model middle pipe joint.
Fig. 4 is the schematic diagram of blossom type stringing on tube sheet in the utility model.
Marked in figure:1 is bobbin carriage cylinder, and 2 be shell-side cylinder, and 3 be tube sheet, and 4 be U heat exchange, and 5 be high-temperature medium entrance Area, 6 be cryogenic media outlet area, and 7 be high-temperature medium entrance, and 8 be cryogenic media outlet, and 9 be tubesheet holes, and 10 be internal lining pipe, 11 Centered on tube sheet, 12 be detachable casing, and 13 be detachable lining cylinder, and 14 be expansion structure, and 15 be guide shell.
Embodiment
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only explaining The utility model, is not used to limit the utility model.
As shown in Figs 1-4, a kind of blossom type comb waste heat boiler, including bobbin carriage cylinder 1 and shell-side cylinder 2, the bobbin carriage Cylinder 1 is connected by tube sheet 3 with shell-side cylinder 2, is provided with some U heat exchanges 4 in the shell-side cylinder 2, described U-shaped to change The input end centralized arrangement of heat pipe 4 forms high-temperature medium inlet region 5, the high-temperature medium inlet region 5 in the centre of tube sheet 3 Connected with high-temperature medium entrance 7, the port of export centralized arrangement of the U heat exchange 4 forms low temperature in the edge of tube sheet 3 and is situated between Matter outlet area 6, the cryogenic media outlet area 6 are connected with cryogenic media outlet 8.The utility model for large scale equipment, by Relatively more in heat exchanger tube quantity, relatively difficult using quincunx comb, the utility model is using U heat exchange afterbody 3D design skills Art, makes U heat exchange afterbody interlaced arrangement, successfully solves the problems, such as that the quincunx comb of large scale equipment is difficult.
Wherein, the inlet end and an outlet end of the U heat exchange 4 is some with being set on tube sheet 3 by internal bore welding respectively Tubesheet holes 9 connects, i.e., described U heat exchange 4 uses butt welding with tube sheet 3 in shell-side, in the input end with U heat exchange 4 Internal lining pipe 10 is provided with the tubesheet holes 9 of connection, 10 end of internal lining pipe is connected with 4 input end of U heat exchange, in the pipe Center tube sheet 11 is provided with case cylinder 1, is provided with and some is connected with internal lining pipe 10 between the center tube sheet 11 and tube sheet 3 Detachable casing 12, the detachable casing 12 is through center tube sheet 11 and the detachable lining that is connected with center tube sheet 11 Cylinder 13 connects, and the detachable lining cylinder 13 is connected by expansion structure 14 with high-temperature medium entrance 7.
Wherein, guide shell 15, the guide shell 15 and bobbin carriage cylinder are provided between the center tube sheet 11 and tube sheet 3 Circular passage is formed between 1, the circular passage is connected with cryogenic media outlet area 6, and through hole is provided with the guide shell 15, The cryogenic media that the cryogenic media outlet area 6 is flowed out can flow through whole 3 surface of tube sheet, reduce the bulk temperature of tube sheet.
The utility model is devised hot side to solve the destruction that high-temperature medium exchange heat pipe is connected with tube sheet pipe fitting Medium is separated with cold side medium, i.e., using blossom type comb, it is contemplated that medium inlet side temperature is higher, and medium has certain corruption Corrosion, the connection of exchanger tubes and tubesheets add expansion-joint structure to meet to give up such as the strength solder joints structure using or strength solder joints The operating mode of heat boiler harshness, therefore high temperature section uses internal bore welding, i.e. exchanger tubes and tubesheets use butt welding, its structure in shell-side Continuously, can be detected, the anti-alternate load ability of pipe fitting is good, meanwhile, pipe fitting ducks in drink in shell-side, alleviates significantly Influence of the high-temperature medium to weld seam.Dismountable casing is devised in heat exchanger tube tube case side at the same time, is set at tube sheet heat exchanger tube pore Internal lining pipe is put, is sealed between internal lining pipe and casing using high temperature resistant packing, medium passes through inside lining sleeve, heat exchange pipe-in-pipe, pipe Plate enters heat exchanger tube, and high-temperature medium is not contacted with supervisor's plate surface.When equipment goes wrong in use or needs to overhaul When, in that context it may be convenient to center tube sheet, casing are removed, supervisor's plate is overhauled.And cryogenic media side, due to medium temperature ratio Relatively low, exchanger tubes and tubesheets use internal bore welding, and tubesheet holes is not provided with internal lining pipe, and medium is directly entered bobbin carriage through heat exchanger tube.
In addition, the utility model uses the band removable inner tube structure of expansion joint sectional type, the removable main purpose side of being of sectional type Just checking maintenance, while consider to increase expansion joint, ensure that connecting component will not produce leakage because the differential expansion of parts is different.Work Inside lining sleeve, center tube sheet, the connector such as casing are set at skill medium inlet, make high-temperature medium by inside lining sleeve, center tube sheet and Casing exchanges heat into heat exchanger tube, so that high-temperature medium is not contacted with the main pressurized element of bobbin carriage, greatly reduces bobbin carriage master The design temperature of body pressure parts, can reduce the class of bobbin carriage material, save the investment of whole equipment.Moreover, inside lining sleeve, The material of the connector such as center tube sheet and casing can carry out different class materials according to process conditions such as the corrosivity of medium, temperature Selection.Since internals are to be designed by pressure difference, and structure size is smaller, therefore even if using high-grade material, to whole The investment of a equipment is also not very high;Meanwhile inside lining sleeve, center tube sheet and sleeve use detachable structure, facilitate checking maintenance.
Since bobbin carriage import medium temperature is higher, inside lining sleeve uses high alloy material, and bobbin carriage pressure-bearing shell is generally adopted With carbon steel material, the exit gas of low temperature is contacted, therefore, differential expansion between the two is bigger.The axial direction of bobbin carriage inside lining sleeve itself, It is also required to coordinate between the expansion of radial direction and pressure-bearing box hat.Meanwhile also to take into account center tube sheet dismounting and again install when with it is interior The structure problems such as the cooperation of lining, sealing, thus while designing use increase at medium inlet corrugated-type expansion joint absorb it is radially swollen It is swollen, in the axial direction using dried shrimp elbow and taper reducer, to adjust the expansion issues caused by the temperature difference, ensure connecting component Leakage will not be produced because the differential expansion of parts is different, while according to the flow of different medium, temperature, medium physical property, uses Different medium inlet sizes.
The blossom type comb waste heat boiler of the utility model has simple in structure, Yi Jia while technological requirement is met Work, simple to install, sealing is close reliable, and can be amplified according to the scale of process unit, and checking maintenance is convenient, and equipment internals are not It is constrained, it is ensured that equipment longtime running, reduces because of the hidden danger for the parking underproduction that the problems such as equipment leakage produces, brought to factory Obvious economic benefit.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims (5)

1. a kind of blossom type comb waste heat boiler, including bobbin carriage cylinder(1)And shell-side cylinder(2), the bobbin carriage cylinder(1)Pass through Tube sheet(3)With shell-side cylinder(2)Connection, in the shell-side cylinder(2)Inside it is provided with some U heat exchanges(4), its feature exists In:The U heat exchange(4)Input end centralized arrangement in tube sheet(3)Centre form high-temperature medium inlet region(5), The high-temperature medium inlet region(5)With high-temperature medium entrance(7)Connection, the U heat exchange(4)Port of export centralized arrangement exist Tube sheet(3)Edge form cryogenic media outlet area(6), the cryogenic media outlet area(6)With cryogenic media outlet(8) Connection.
2. blossom type comb waste heat boiler according to claim 1, it is characterised in that:The U heat exchange(4)Import End and the port of export pass through internal bore welding and tube sheet respectively(3)Some tubesheet holes of upper setting(9)Connection, i.e., described U heat exchange(4) With tube sheet(3)Use butt welding in shell-side, with U heat exchange(4)Input end connection tubesheet holes(9)In being inside provided with Bushing pipe(10), the internal lining pipe(10)Tubesheet holes is inserted into one end(9)With U heat exchange(4)End connects, its other end and high temperature Medium inlet(7)Connection.
3. blossom type comb waste heat boiler according to claim 2, it is characterised in that:In the bobbin carriage cylinder(1)Inside set It is equipped with center tube sheet(11), in the center tube sheet(11)With tube sheet(3)Between be provided with some and internal lining pipe(10)Connection Detachable casing(12), the detachable casing(12)Through center tube sheet(11)And with center tube sheet(11)Upper connection it is removable Unload inside lining sleeve(13)Connection, the detachable lining cylinder(13)With high-temperature medium entrance(7)Connection.
4. blossom type comb waste heat boiler according to claim 3, it is characterised in that:The detachable lining cylinder(13)It is logical Cross expansion structure(14)With high-temperature medium entrance(7)Connection.
5. the blossom type comb waste heat boiler according to claim 2,3 or 4, it is characterised in that:In the center tube sheet (11)With tube sheet(3)Between be provided with guide shell(15), the guide shell(15)With bobbin carriage cylinder(1)Between to form annular logical Road, the circular passage and cryogenic media outlet area(6)Connection, the guide shell(15)On be provided with through hole, the low temperature is situated between Matter outlet area(6)The cryogenic media of outflow can flow through whole tube sheet(3)Surface.
CN201721262572.2U 2017-09-29 2017-09-29 A kind of blossom type comb waste heat boiler Active CN207298886U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721262572.2U CN207298886U (en) 2017-09-29 2017-09-29 A kind of blossom type comb waste heat boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721262572.2U CN207298886U (en) 2017-09-29 2017-09-29 A kind of blossom type comb waste heat boiler

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Publication Number Publication Date
CN207298886U true CN207298886U (en) 2018-05-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113446873A (en) * 2020-03-24 2021-09-28 中国石化工程建设有限公司 U-shaped tube heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113446873A (en) * 2020-03-24 2021-09-28 中国石化工程建设有限公司 U-shaped tube heat exchanger

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