CN208817448U - A kind of waste heat boiler of no tube sheet - Google Patents
A kind of waste heat boiler of no tube sheet Download PDFInfo
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- CN208817448U CN208817448U CN201821226549.2U CN201821226549U CN208817448U CN 208817448 U CN208817448 U CN 208817448U CN 201821226549 U CN201821226549 U CN 201821226549U CN 208817448 U CN208817448 U CN 208817448U
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Abstract
The utility model discloses a kind of waste heat boiler, especially a kind of waste heat boiler of no tube sheet belongs to chemical plant installations technical field.A kind of waste heat boiler of the no tube sheet of the utility model, including shell and it is assemblied in the intracorporal multiple tube bundle assemblies of shell；Upper end is equipped with air inlet and gas outlet under shell；Tube bundle assembly includes bushing type header, and bushing type header is connected with several beam heat exchange tube units；Bushing type header includes the outer header for being assemblied in shell upper section and the interior header being set in outer header, and interior header is equipped with inlet, which is pierced by after being pierced by outer header from shell；Outer header is equipped with vapour-liquid mouth, should go out vapour-liquid mouth and be pierced by from shell；Heat exchange tube unit includes outer tube and the inner sleeve that is inserted in outer tube；Inner sleeve upper end is connected after penetrating outer header with interior header, and outer sleeve upper is connected with outer header.The utility model does not use tube sheet, and equipment is easy to enlargement, reduces the manufacturing expense of waste heat boiler, good economy performance.
Description
Technical field
The utility model relates to a kind of waste heat boiler, especially a kind of waste heat boiler of no tube sheet belongs to chemical plant installations skill
Art field.
Background technique
Waste heat boiler is the core equipment of chemical plant installations, is generally used in exothermic reactor or after exothermic reactor, right
Reaction gas is quickly cooled down；Or using in the heat recovery of high-temperature gas.Some high-temperature gases or reaction gas are (hereinafter referred to as
For process gas) temperature height, keep the use condition of waste heat boiler harsher, especially relatively high to process gas pressure and temperature compares
High waste heat boiler, due to thermally expanding the stress problem of generation between shell journey, traditional tubular waste heat boiler hardly may be used
With.
In order to solve this problem, in the prior art use other structures form waste heat boiler, as under process gas into upper
Sword bayonet type waste heat boiler (vertical) out, including shell, 1 tube sheet, top saturated water and steam Double pipe box, sleeve-type heat exchanging pipe
(heat exchanger tube includes casing outer tube and the casing inner tube being set in casing outer tube), sleeve-type heat exchanging pipe upper end is by tube sheet
(upper perforated plate) support, lower end retractable, casing inner tube are saturated water down-comer, and casing outer tube is steam tedge；Casing
The saturated water and process gas that annular space circulates between inner tube and casing outer tube, which are realized, to exchange heat.(it is practical new that structure type can be found in China
The attached drawing 2 or 3 of type patent 201020145549.7).Caused by sword bayonet type waste heat boiler has well solved the thermal expansion of shell journey
Stress problem, but still have its limitation, the useless cookware of sword bayonet type has upper perforated plate, and enlargement is restricted.
Summary of the invention
The goal of the invention of the utility model is: in view of the above problems, a kind of waste heat boiler of no tube sheet is provided,
The utility model does not use tube sheet, but uses support of the bushing type header as heat exchange tube unit, and equipment is easy to enlargement,
For bushing type header for tube sheet, the class requirement of material is low, reduces the manufacturing expense of waste heat boiler, good economy performance.
The technical solution adopted in the utility model is as follows:
A kind of waste heat boiler of no tube sheet, including shell and it is assemblied in the intracorporal multiple tube bundle assemblies of shell；Under the shell
End is equipped with air inlet, shell upper end is equipped with gas outlet, and tube bundle assembly is between air inlet and gas outlet；The tube bundle assembly packet
The bushing type header for being assemblied in shell upper section is included, bushing type header is connected with several beam heat exchange tube units extended downwardly；It is described
Bushing type header includes the outer header for being assemblied in shell upper section and the interior header being set in outer header, and the interior header is equipped with
Inlet, the inlet are pierced by after being pierced by outer header from shell；The outer header is equipped with vapour-liquid mouth, should go out vapour-liquid mouth from shell
Body is pierced by；The heat exchange tube unit includes outer tube and the inner sleeve that is inserted in outer tube, and the outer tube lower end is cecum,
Inner sleeve lower end is inserted into outer tube lower end and is connected with outer tube；Inner sleeve upper end penetrate after outer header with interior header phase
Connection, outer sleeve upper are connected with outer header.
When using the utility model, high-temperature technology gas enters in shell from air inlet, the mistake that process gas rises in shell
The saturation boiler water of Cheng Zhongyu tube bundle assembly circulation carries out heat exchange, and process gas temperature flows out after reducing from gas outlet.Meanwhile it is right
For tube bundle assembly, saturation boiler water from inlet enter interior header after, be diverted into every be connected with the interior header it is interior
In casing, to lower flowing in inner sleeve, turn back upwards after then flowing into outer tube lower end from inner sleeve lower end, then along housing
Annular space between pipe and inner sleeve flows up into outer header and (in the process, is saturated the technique outside boiler water and outer tube
Gas cocurrent exchanges heat and is vaporized), the gas-vapor mix formed after heat exchange flows through the annular space between outer header and interior header from vapour out
The outflow of liquid mouth.The utility model does not use tube sheet, but uses support of the bushing type header as heat exchange tube unit, and equipment is easy
In enlargement, for bushing type header for tube sheet, the class requirement of material is low, reduces the manufacturing expense of waste heat boiler,
Good economy performance.Have benefited from the design of the utility model tube bundle assembly, additionally it is possible to gas-phase space stringing dead zone is reduced, to increase
Heat exchange area per unit volume improves heat exchange efficiency.
The heat exchange area in waste heat boiler unit volume in order to increase the utility model improves heat exchange efficiency；This is practical
It is novel to further provide the selectable technical solution of following two.
The first scheme: a kind of waste heat boiler of no tube sheet of the utility model, the heat exchange tube unit further includes several
Root exchange heat branch pipe, the heat exchange branch pipe be located at outer tube outside, along outer tube axis distribution, the upper and lower side for the branch pipe that exchanges heat respectively with
The upper and lower side of outer tube is connected.That is heat exchange branch pipe upper end is connected with outer sleeve upper, under heat exchange branch pipe lower end and outer tube
End is connected.Heat exchange branch pipe and outer tube form parallel structure, by the design for the branch pipe that exchanges heat, are saturated boiler water from inner sleeve
Shunting will be generated when turning back upwards behind the inflow outer tube lower end of pipe lower end, a portion is saturated boiler water along outer tube and inner sleeve
Annular space between pipe flows up；And another part saturation boiler water flows up in heat exchange branch pipe, two-part saturation pan
Furnace water enters outer header after the upper end of outer tube crosses.The design of heat exchange branch pipe has shunted saturation boiler water, outer tube it is straight
Diameter can be reduced, and the design is capable of increasing the heat exchange area in unit volume, improve heat exchange efficiency.
Second scheme: a kind of waste heat boiler of no tube sheet of the utility model, the heat exchange tube unit further include dividing again
It is piped mechanism, reallocation pipe mechanism includes the multiple groups heat exchange branch being sequentially distributed on the outside of outer tube, along outer tube axis
Pipe, every group of heat exchange branch pipe have several, and the upper and lower side of each group heat exchange branch pipe is successively connected with outer tube respectively, wherein is located at
That group heat exchange branch pipe lower end bottom is connected with outer tube lower end, positioned at the top that group heat exchange branch pipe upper end with
Outer sleeve upper is connected.Heat exchange branch pipe and outer tube form series-parallel structure, and second scheme has adhered to the first side
The advantages of case, and the reallocation pipe mechanism that second scheme is formed, saturation boiler water form shunting-confluence-from bottom to up
Shunting-confluence-shunting-confluence ... liquid form, can further improve heat exchange efficiency.
As the further design of second scheme, every group of heat exchange branch pipe is in inside and outside two circles distribution, positioned at the heat exchange of inner ring
The spacing of branch pipe and outer tube is less than the spacing of the heat exchange branch pipe and outer tube positioned at outer ring.Optimize the layout side of heat exchange branch pipe
Formula can further improve heat exchange efficiency.
As the further design of the first scheme or second scheme, the heat exchange tube unit further includes multiple extended surface members
Part, the extended surface element are set to outer tube or/and heat exchange branch pipe outer wall.Heat exchange area can be further increased, heat exchange effect is improved
Rate.Preferably, outer tube and heat exchange branch pipe outer wall are designed with extended surface element.
Further, the extended surface element is from top to bottom successively reduced in the distribution density of heat exchange tube unit.Due to technique
Heat exchange occurs with tube bundle assembly during gas rises in shell from bottom to up, temperature gradually reduces from bottom to up；For
The calorific intensity for bearing heat exchange tube unit becomes as far as possible uniformly, to extend the service life of waste heat boiler, therefore to propose
The layout designs.Extended surface element heat exchange tube unit (outer tube or/and heat exchange branch pipe outer wall) distribution density by up to
Under successively reduce, the heat exchange area for realizing heat exchange tube unit from top to bottom successively reduces, this allows for heat exchange tube unit and is held
The calorific intensity received can become as far as possible uniformly, and waste heat boiler is more steady in the process of running, and the service life is longer.
Further, the heat exchange tube unit upper section is high density extended surface area, middle section is low-density extended surface area, lower section is light
Area under control, the extended surface element distribution that the extended surface element distribution density of high density extended surface area setting is greater than the setting of low-density extended surface area are close
Degree, light pipe area is not provided with extended surface element.The design is the optional design of extended surface element being specifically laid out, and the design to exchange heat
Pipe unit forms 3 heat exchange areas；Similarly, based on the design of the design, 2,4 or more heat exchange be may be designed in
Region.
A kind of waste heat boiler of no tube sheet of the utility model, the cecum of each outer tube are connected to form whole by connecting plate
Body structure.(cecum of each outer tube in other words lower end) lower end is connected to form whole by connecting plate so that each beam heat exchange tube unit
Body structure can reduce the vibration of heat exchange tube unit, improve the service life of waste heat boiler.
The cecum bottom of a kind of waste heat boiler of no tube sheet of the utility model, each outer tube is equipped with baffler.If
There is no the design of baffler, the cecum of outer tube will directly be born from air inlet high-temperature technology gas, so that the cecum of outer tube
Temperature keep the condition of high temperature for a long time；And have benefited from the design of baffler, high-temperature technology gas, which is changed after entering by baffler, to be flowed to,
Process gas is flowed up from the cecum of outer tube laterally along outer tube outside；This reduces the heat that the cecum of outer tube is born
Intensity, to improve the service life of waste heat boiler.
A kind of waste heat boiler of no tube sheet of the utility model, the inner walls are equipped with shell inside liner.Shell inside liner is made
For selectable design, it is laid with according to actual use demand (process gas temperature).Alternative, shell inside liner is divided into two
Layer, that layer for being close to inner walls is first shell inside liner, another layer is second shell inside liner, wherein first shell inside liner
It is refractory layer for thermal insulation layer, second shell inside liner.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
1, the waste heat boiler of a kind of no tube sheet of the utility model using the design of no tube sheet, but uses casing
Support of the formula header as heat exchange tube unit, equipment are easy to enlargement, and bushing type header is for tube sheet, the class of material
It is required that it is low, reduce the manufacturing expense of waste heat boiler, good economy performance.
2, in the first scheme exchange heat branch pipe design, realize saturation boiler moisture stream-confluence liquid form；Second
The design of reallocation pipe mechanism is changed in scheme, realizes saturation boiler moisture stream-confluence-shunting-confluence-shunting-confluence ...
Liquid form；The heat exchange area in unit volume is increased, heat exchange efficiency is improved.
3, the design of extended surface element increases heat exchange area, improves heat exchange efficiency.Point of the extended surface element in heat exchange tube unit
The design that cloth density from top to bottom successively reduces, the calorific intensity for enabling to heat exchange tube unit to be born can become as far as possible
Uniformly, so that waste heat boiler is more steady in the process of running, the service life is longer.
4, the design of connecting plate can reduce the vibration of heat exchange tube unit, improve the service life of waste heat boiler.
5, the design of baffler can reduce the calorific intensity that the cecum of outer tube is born, to improve waste heat boiler
Service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the waste heat boiler in embodiment one;
Fig. 2 is tube bundle assembly in embodiment one in the intracorporal layout of shell;
Fig. 3 is the structural schematic diagram of one of embodiment one tube bundle assembly;
Fig. 4 is the top view of two adjacent heat exchange tube units in embodiment one;
Fig. 5 is the structural schematic diagram of the waste heat boiler in embodiment two;
Fig. 6 is tube bundle assembly in embodiment two in the intracorporal layout of shell;
Fig. 7 is the structural schematic diagram of one of embodiment two tube bundle assembly;
Fig. 8 is the top view of two adjacent heat exchange tube units in embodiment two;
Fig. 9 is the structural schematic diagram of the waste heat boiler in embodiment three;
Figure 10 is enlarged drawing at A in Fig. 9;
Figure 11 is tube bundle assembly in embodiment three in the intracorporal layout of shell;
Figure 12 is the structural schematic diagram of one of embodiment three tube bundle assembly;
Figure 13 is enlarged drawing at B in Figure 12;
Figure 14 is the top view of two adjacent heat exchange tube units in embodiment three.
Marked in the figure: on 1- lower head, 11- air inlet, 2- cylinder, 21- manhole, 22- support, 23- damping shock absorption part, 3-
End socket, the gas outlet 31-, 4- shell inside liner, 41- first shell inside liner, 42- second shell inside liner, 5- tube bundle assembly, 511- feed liquor
Header, 513- inner sleeve, 521- go out the outer header of vapour-liquid mouth, 522-, 523- outer tube, 524- heat exchange branch pipe, 53- in mouth, 512-
Channel closure, 54- connecting plate, 55- baffler, 56- extended surface element.
Specific embodiment
With reference to the accompanying drawing, 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, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Embodiment one
As shown in Figures 1 to 4, the waste heat boiler of a kind of no tube sheet of the present embodiment, including shell and arrangement are assemblied in shell
Intracorporal multiple tube bundle assemblies 5；The shell lower end is equipped with air inlet 11, shell upper end is equipped with gas outlet 31, and tube bundle assembly 5
Between air inlet 11 and gas outlet 31；The tube bundle assembly 5 includes the bushing type header for being assemblied in shell upper section, bushing type collection
Case is connected with several beam heat exchange tube units extended downwardly；Described sleeve pipe formula header includes being assemblied in the outer header of shell upper section
522 and the interior header 512 that is set in outer header 522, the interior header 512 be equipped with inlet 511, which wears
It is pierced by after header 522 from shell out；The outer header 522 is equipped with vapour-liquid mouth 521, should go out vapour-liquid mouth 521 and wear from shell
Out；The heat exchange tube unit includes outer tube 523 and the inner sleeve 513 that is inserted in outer tube 523, under the outer tube 523
End is cecum, and 513 lower end of inner sleeve is inserted into 523 lower end of outer tube and is connected with outer tube 523；It wears 513 upper end of inner sleeve
It is connected after entering outer header 522 with interior header 512,523 upper end of outer tube is connected with outer header 522.
When using the utility model, high-temperature technology gas enters in shell from air inlet 11, what process gas rose in shell
The saturation boiler water to circulate in the process with tube bundle assembly 5 carries out heat exchange, and process gas temperature flows out after reducing from gas outlet 31.Together
When, for tube bundle assembly 5, the saturation boiler water from relevant device (such as drum) enters interior header from inlet 511
After 512, be diverted into the inner sleeve 513 that every is connected with the interior header 512, flow downward in inner sleeve 513, then from
513 lower end of inner sleeve is turned back upwards after flowing into 523 lower end of outer tube, then the annular space between outer tube 523 and inner sleeve 513
Flow up into outer header 522(in the process, the heat exchange of process gas cocurrent and quilt outside saturation boiler water and outer tube 523
Vaporization), the gas-vapor mix formed after heat exchange flows through the annular space between outer header 522 and interior header 512 and flows from vapour-liquid mouth 521 out
Steam-water separation is carried out to relevant device (such as drum) out.The utility model does not use tube sheet, but uses bushing type header
As the support of heat exchange tube unit, equipment is easy to enlargement, and bushing type header is for tube sheet, the class requirement of material
It is low, reduce the manufacturing expense of waste heat boiler, good economy performance.Have benefited from the design of the utility model tube bundle assembly, additionally it is possible to subtract
Few gas-phase space stringing dead zone improves heat exchange efficiency to increase heat exchange area per unit volume.
Alternative, 523 lower end of outer tube is equipped with channel closure 53 and forms the cecum.It is alternative, such as Fig. 2
It is shown, positioned at the intracorporal multiple tube bundle assemblies 5 of shell equally and row pattern be distributed, and be adapted with shell, each tube bank group
The length of the bushing type header of part 5 is not quite similar, the quantity for the heat exchange tube unit that each bushing type header is connected also phase not to the utmost
Together；It can certainly be equidistant circular distribution.It is alternative, as shown in Figure 1, the shell includes cylinder 2 and sets
In the upper cover 3 and lower head 1 of 2 upper and lower ends of cylinder, the air inlet 11 is set to lower head 1(and can also be set under cylinder 2 certainly
Section), gas outlet 31 is set to upper cover 3(can also be set to 2 upper section of cylinder certainly), bushing type header is located at 2 upper section of cylinder, heat exchanger tube
Unit extends to 2 lower section of cylinder.Preferably, inlet 511 is pierced by with vapour-liquid mouth 521 out from 2 upper section of cylinder；Certainly, feed liquor
Mouth 511 can also be pierced by with vapour-liquid mouth 521 out from upper cover 3.Alternative, the upper section and lower section of shell are respectively equipped with manhole
21；Preferably, manhole 21 has 2, one of manhole 21 is set to 2 upper section of cylinder (can certainly be set to upper cover 3), position
Above tube bundle assembly 5, another manhole 21 is set to 2 lower section of cylinder (can certainly be set to lower head 1), is located at tube bundle assembly
5 lower sections.Alternative, outer header 522 is assemblied in inner walls by support 22 and (preferably, is assemblied in 2 inner wall of cylinder
On)；Preferably, outer header 522 and support 22 and between be equipped with damping shock absorption part 23；To buffer tube bundle assembly in operational process
5 vibration, (partial enlarged view is referring to Figure 10) as shown in Figure 1.Process gas is used as it will be evident that having between each tube bundle assembly 5
The gap of circulation also has the gap circulated as process gas between each heat exchange unit；It will be evident that outer header 522 not with shell
Intracorporal cavity connection, interior header 512 are not also connected to directly with outer header 522, and interior header 512 is to pass through with outer header 522
Heat exchange unit is connected.
The heat exchange area in waste heat boiler unit volume in order to increase the utility model improves heat exchange efficiency；Embodiment
One proposes the first scheme.
The first scheme: the further optimization based on the present embodiment, as shown in Figures 1 to 4, the heat exchange tube unit is also
Including several heat exchange branch pipes 524, the heat exchange branch pipe 524 is located at 523 outside of outer tube, is distributed along 523 axis of outer tube, changes
The upper and lower side of hot leg pipe 524 is connected with the upper and lower side of outer tube 523 respectively.I.e. on heat exchange 524 upper end of branch pipe and outer tube 523
End is connected, and heat exchange 524 lower end of branch pipe is connected with 523 lower end of outer tube.Heat exchange branch pipe 524 and outer tube 523 form simultaneously
Connection formula structure, by the design for the branch pipe 524 that exchanges heat, saturation boiler water is backward from 513 lower end of inner sleeve inflow 523 lower end of outer tube
Shunting will be generated when upper fold-back, a portion is saturated annular space of the boiler water between outer tube 523 and inner sleeve 513 to upstream
It is dynamic；And another part saturation boiler water flows up in heat exchange branch pipe 524, two-part saturation boiler water is in outer tube 523
Upper end cross after enter outer header 522.The design of heat exchange branch pipe 524 has shunted saturation boiler water, the diameter energy of outer tube 523
It is enough reduced, for sword bayonet type waste heat boiler, the stringing of unit volume can be more, and the design is capable of increasing unit
Heat exchange area in volume improves heat exchange efficiency.Certainly, heat exchange 524 upper end of branch pipe can not also be connected with 523 upper end of outer tube
It is logical, but 524 upper end of branch pipe that exchanges heat directly is connected with outer header 522, but this adds increased manufacture difficulty, and non-optimal side
Case.
Further, as shown in Figure 3 and Figure 4, the heat exchange tube unit further includes multiple extended surface elements 56, the extended surface member
Part 56 is set to outer tube 523 or/and heat exchange 524 outer wall of branch pipe.Heat exchange area can be further increased, heat exchange efficiency is improved.Make
To be preferred, outer tube 523 and heat exchange 524 outer wall of branch pipe are designed with extended surface element 56；Can certainly be, only outer tube 523 or
Extended surface element 56 is arranged in 524 outer wall of branch pipe that exchanges heat.Alternative, the extended surface element 56 is fin or ailhead；Preferably, rib
Piece is in odontoid or rectangular-shaped, and ailhead is in rounded shape, elliptical shape or diamond shaped.In one embodiment, outside outer tube 523
The extended surface element 56 of wall setting is ailhead, and the extended surface element 56 of heat exchange 524 outer wall of branch pipe setting is fin.
Further, the extended surface element 56 is from top to bottom successively reduced in the distribution density of heat exchange tube unit.Due to work
Heat exchange occurs with tube bundle assembly during skill gas rises in shell from bottom to up, temperature gradually reduces from bottom to up；
In order to which the calorific intensity for bearing heat exchange tube unit becomes as far as possible uniformly, to extend the service life of waste heat boiler, therefore to mention
The layout designs are gone out.Distribution of the extended surface element 56 in heat exchange tube unit (in outer tube 523 or/and heat exchange 524 outer wall of branch pipe)
Density from top to bottom successively reduces, and the heat exchange area for realizing heat exchange tube unit from top to bottom successively reduces, this allows for exchanging heat
The calorific intensity that pipe unit is born can become as far as possible uniformly, and waste heat boiler is more steady in the process of running, use the longevity
It orders longer.
Further, as shown in figure 3, the heat exchange tube unit upper section is high density extended surface area, middle section is low-density extended surface
Area, lower section are light pipe area, and 56 distribution density of extended surface element of high density extended surface area setting is greater than the expansion of low-density extended surface area setting
56 distribution density of face element part, light pipe area are not provided with extended surface element 56.The design is that being specifically laid out for extended surface element 56 is optional
Design, the design make heat exchange tube unit form 3 heat exchange areas；Similarly, it based on the design of the design, may be designed in
2,4 or more heat exchange areas.Preferably, the height in high density extended surface area is greater than the height in low-density extended surface area,
The height in low-density extended surface area is greater than the height in light pipe area.
Further optimization based on the present embodiment, as shown in figures 1 and 3, the cecum of each outer tube 523 passes through connection
Plate 54 is connected to form overall structure.(cecum of each outer tube 523 in other words lower end) lower end is logical so that each beam heat exchange tube unit
It crosses connecting plate 54 and is connected to form overall structure, can reduce the vibration of heat exchange tube unit, improve the service life of waste heat boiler.
Further optimization based on the present embodiment, as shown in figures 1 and 3, the cecum bottom of each outer tube 523 are equipped with
Baffler 55.If the cecum of outer tube 523 will directly bear to come from 11 high-temperature technology of air inlet without the design of baffler 55
Gas, so that the temperature of the cecum of outer tube 523 keeps the condition of high temperature for a long time；And have benefited from the design of baffler 55, high-temperature technology
Gas, which is changed after entering by baffler 55, to be flowed to, and process gas is from the cecum of outer tube 523 laterally along 523 outside of outer tube to upstream
It is dynamic；This reduces the calorific intensitys that the cecum of outer tube 523 is born, to improve the service life of waste heat boiler.It is preferred that
, the tapered shape in the bottom surface of baffler 55 or V-shape.
Based on the Combination Design of channel closure 53, connecting plate 54 and baffler 55 design, connecting plate 54 is assemblied in channel closure
The cecum of 53(outer tube 523) bottom, to connect each channel closure 53；Baffler 55 is assemblied in 54 bottom of connecting plate, and rolls over
It is corresponding one by one with channel closure 53 to flow device 55, as shown in Figure 3.
Further optimization based on the present embodiment, as depicted in figs. 1 and 2, the inner walls are equipped with shell inside liner 4.
Shell inside liner 4 is used as selectable design, is laid with according to actual use demand.Alternative, it is two that shell inside liner 4, which is divided to,
Layer, that layer for being close to inner walls is first shell inside liner 41, another layer is second shell inside liner 42, wherein in first shell
Lining 41 is thermal insulation layer, second shell inside liner 42 is refractory layer, primarily serves heat-insulated and heat-resisting effect.Certainly, shell inside liner 4
Can also there was only one layer, i.e. only first shell inside liner 41 or second shell inside liner 42.Certainly, it can also be spread according to use demand
If other kinds of shell inside liner 4.When being combined with the design of lower head 1, cylinder 2, upper cover 3 and manhole 21, lower head
1, cylinder 2, upper cover 3 and 21 inner wall of manhole are both provided with the shell inside liner 4.
Based on the design of above-mentioned technical characteristic combination, as shown in Figures 1 to 4, the heat exchange branch pipe outside the outer tube 523
524 are distributed in regular quadrangle shape.In one embodiment, the heat exchange branch pipe 524 of every 523 loong shunt of outer tube has 4 (to make
For the design of adaptability, reduced close to the heat exchange branch pipe 524 of 2 inner wall of housing cylinder), the distribution of regular quadrangle shape is formed,
As shown in Figure 4.Alternative, each inlet 521 collects for total inlet, it is each go out vapour-liquid mouth 521 to collect be total
Vapour-liquid mouth out, as shown in Figure 2.The present embodiment is particularly suitable for the waste heat boiler of production DN < 2500mm.
Embodiment two
As shown in Fig. 5 to Fig. 8, embodiment two is basically the same as the first embodiment, the difference is that: the outer tube 523
Outer heat exchange branch pipe 524 is distributed in regular hexagon shape.In one embodiment, the heat exchange branch of every 523 loong shunt of outer tube
Pipe 524 has 6 (as the design of adaptability, being reduced close to the heat exchange branch pipe 524 of 2 inner wall of housing cylinder), forms positive six
The distribution of side shape, as shown in Figure 8.The present embodiment is particularly suitable for the waste heat boiler of production 2500mm≤DN < 4000mm.
Embodiment three
As shown in Fig. 9 to Figure 14, embodiment three and embodiment one or two are essentially identical, the difference is that: in order to increase
Heat exchange area in the waste heat boiler unit volume of the utility model improves heat exchange efficiency；Embodiment three proposes and embodiment
The different second scheme of one or two the first scheme.
Second scheme: as shown in Fig. 9 to Figure 14, a kind of waste heat boiler of no tube sheet of the present embodiment, the heat exchanger tube
Unit further includes reallocation pipe mechanism, and reallocation pipe mechanism includes being located at 523 outside of outer tube, along 523 axis of outer tube
The multiple groups heat exchange branch pipe 524 being sequentially distributed, every group of heat exchange branch pipe 524 have several, the upper and lower side difference of each group heat exchange branch pipe 524
Successively be connected with outer tube 523, wherein positioned at bottom that 524 lower end of group heat exchange branch pipe and 523 lower end phase of outer tube
Connection, that 524 upper end of group heat exchange branch pipe positioned at the top is connected with 523 upper end of outer tube.Exchange heat branch pipe 524 and housing
The advantages of pipe 523 forms series-parallel structure, and second scheme has adhered to the first scheme, and second scheme formation
Reallocation pipe mechanism, saturation boiler water form shunting-confluence-shunting-confluence-shunting-confluence ... flowing from bottom to up
Form can further improve heat exchange efficiency, and second scheme is especially suitable for the longer waste heat boiler of heat exchange tube unit；Than
Such as heat exchange tube unit length >=6000mm waste heat boiler.In one embodiment, it is sequentially distributed along 523 axis of outer tube
Heat exchange branch pipe 524 has 3 groups；Certainly, according to actual needs, the heat exchange branch pipe 524 being sequentially distributed along 523 axis of outer tube can be with
There are 2 groups, 4 groups or more；It is of course also possible to which only 1 group of heat exchange branch pipe 524, is equivalent to the technical solution of embodiment one at this time.
Preferably, the diameter in heat exchange branch pipe 524 and 523 junction of outer tube, outer tube 523 increases, and is advantageously implemented shunting and converges
The liquid form of stream.It will be evident that the present embodiment also includes the relevant design of extended surface element 56, referring specifically to embodiment one, this
Place repeats no more.
Further, as shown in Figure 11 and Figure 14, every group of heat exchange branch pipe 524 is in inside and outside two circles distribution, positioned at changing for inner ring
The spacing of hot leg pipe 524 and outer tube 523 is less than the spacing of the heat exchange branch pipe 524 and outer tube 523 positioned at outer ring.It optimizes and changes
The layout type of hot leg pipe 524 can further improve heat exchange efficiency.
Further, in every group of heat exchange branch pipe 524, positioned at the distribution in rounded shape of heat exchange branch pipe 524 of inner ring, it is located at outer ring
Heat exchange branch pipe 524 in regular hexagon shape be distributed.In one embodiment, the heat exchange branch pipe of every 523 loong shunt of outer tube
524 have 30, wherein have the distribution of 12 formation rounds, the heat exchange branch pipe positioned at outer ring positioned at the heat exchange branch pipe 524 of inner ring
524 have the distribution of 18 formation regular hexagon shapes (as the design of adaptability, close to the heat exchange branch pipe 524 of 2 inner wall of housing cylinder
Reduced), as shown in figure 14.It is of course also possible to be: the distribution all in rounded shape of heat exchange branch pipe 524 of two circles or regular hexagon
Shape distribution.The present embodiment is particularly suitable for the waste heat boiler of production DN >=4000mm.
In conclusion a kind of waste heat boiler of no tube sheet using the utility model, using the design of no tube sheet, but
Support using bushing type header as heat exchange tube unit, equipment are easy to enlargement (design as used the utility model, energy
Enough make 10 meters of nominal diameter or more of waste heat boiler), for bushing type header for tube sheet, the class requirement of material is low,
Reduce the manufacturing expense of waste heat boiler, good economy performance.The design of heat exchange branch pipe in the first scheme, realizes saturation boiler moisture
Stream-confluence liquid form；The design of reallocation pipe mechanism is changed in second scheme, realizes saturation boiler moisture stream-confluence-point
Stream-confluence-shunting-confluence ... liquid form；The heat exchange area in unit volume is increased, heat exchange efficiency is improved.Extended surface
The design of element increases heat exchange area, improves heat exchange efficiency.Extended surface element heat exchange tube unit distribution density from top to bottom
The design successively reduced, the calorific intensity for enabling to heat exchange tube unit to be born can become as far as possible uniformly, so that waste heat
Boiler is more steady in the process of running, and the service life is longer.The design of connecting plate can reduce the vibration of heat exchange tube unit,
Improve the service life of waste heat boiler.It is strong to can reduce the heat that the cecum (channel closure) of outer tube is born for the design of baffler
Degree, to improve the service life of waste heat boiler.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. a kind of waste heat boiler of no tube sheet, it is characterised in that: including shell and be assemblied in the intracorporal multiple tube bundle assemblies of shell
(5)；
The shell lower end is equipped with air inlet (11), shell upper end is equipped with gas outlet (31), and tube bundle assembly (5) is located at air inlet
(11) between gas outlet (31)；
The tube bundle assembly (5) includes the bushing type header for being assemblied in shell upper section, and bushing type header, which is connected with, to be extended downwardly
Several beam heat exchange tube units；
Described sleeve pipe formula header includes the interior collection for being assemblied in the outer header (522) of shell upper section and being set in outer header (522)
Case (512), the interior header (512) are equipped with inlet (511), which is pierced by after outer header (522) from shell
It is pierced by；The outer header (522) is equipped with vapour-liquid mouth (521), should go out vapour-liquid mouth (521) and be pierced by from shell；
The heat exchange tube unit includes outer tube (523) and the inner sleeve (513) being inserted in outer tube (523), the housing
Pipe (523) lower end is cecum, and inner sleeve (513) lower end is inserted into outer tube (523) lower end and is connected with outer tube (523)；
Inner sleeve (513) upper end penetrates outer header (522) and is connected afterwards with interior header (512), outer tube (523) upper end and outer header
(522) it is connected.
2. a kind of waste heat boiler of no tube sheet as described in claim 1, it is characterised in that: if the heat exchange tube unit further includes
Dry root exchanges heat branch pipe (524), and the heat exchange branch pipe (524) is located on the outside of outer tube (523), is distributed along outer tube (523) axis,
The upper and lower side of heat exchange branch pipe (524) is connected with the upper and lower side of outer tube (523) respectively.
3. a kind of waste heat boiler of no tube sheet as described in claim 1, it is characterised in that: the heat exchange tube unit further includes again
Distribution pipe mechanism, including being located at, outer tube (523) outside, along outer tube (523), axis is sequentially distributed for reallocation pipe mechanism
Multiple groups exchange heat branch pipe (524), every group of heat exchange branch pipe (524) has several, each group exchange heat branch pipe (524) upper and lower side respectively according to
It is secondary to be connected with outer tube (523), wherein under that group heat exchange branch pipe (524) lower end and outer tube (523) bottom
End is connected, that group heat exchange branch pipe (524) upper end positioned at the top is connected with outer tube (523) upper end.
4. a kind of waste heat boiler of no tube sheet as claimed in claim 3, it is characterised in that: every group of heat exchange branch pipe (524) is in interior
Outer two circles distribution is less than the heat exchange branch pipe positioned at outer ring positioned at the heat exchange branch pipe (524) of inner ring and the spacing of outer tube (523)
(524) with the spacing of outer tube (523).
5. a kind of waste heat boiler of no tube sheet as described in claim 2,3 or 4, it is characterised in that: the heat exchange tube unit is also
Including multiple extended surface elements (56), the extended surface element (56) is set to outer tube (523) or/and heat exchange branch pipe (524) outer wall.
6. a kind of waste heat boiler of no tube sheet as claimed in claim 5, it is characterised in that: the extended surface element (56) is exchanging heat
The distribution density of pipe unit from top to bottom successively reduces.
7. a kind of waste heat boiler of no tube sheet as claimed in claim 6, it is characterised in that: the heat exchange tube unit upper section is height
Density extended surface area, middle section are low-density extended surface area, lower section is light pipe area, extended surface element (56) distribution of high density extended surface area setting
Density is greater than extended surface element (56) distribution density of low-density extended surface area setting, and light pipe area is not provided with extended surface element (56).
8. a kind of waste heat boiler of no tube sheet as described in claim 1, it is characterised in that: the cecum of each outer tube (523)
Overall structure is connected to form by connecting plate (54).
9. a kind of waste heat boiler of no tube sheet as described in claim 1, it is characterised in that: the cecum of each outer tube (523)
Bottom is equipped with baffler (55).
10. a kind of waste heat boiler of no tube sheet as described in claim 1, it is characterised in that: the inner walls are equipped in shell
Lining (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821226549.2U CN208817448U (en) | 2018-08-01 | 2018-08-01 | A kind of waste heat boiler of no tube sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821226549.2U CN208817448U (en) | 2018-08-01 | 2018-08-01 | A kind of waste heat boiler of no tube sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208817448U true CN208817448U (en) | 2019-05-03 |
Family
ID=66272214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821226549.2U Active CN208817448U (en) | 2018-08-01 | 2018-08-01 | A kind of waste heat boiler of no tube sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208817448U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800085A (en) * | 2018-08-01 | 2018-11-13 | 四川科新机电股份有限公司 | A kind of waste heat boiler of no tube sheet |
-
2018
- 2018-08-01 CN CN201821226549.2U patent/CN208817448U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800085A (en) * | 2018-08-01 | 2018-11-13 | 四川科新机电股份有限公司 | A kind of waste heat boiler of no tube sheet |
| CN108800085B (en) * | 2018-08-01 | 2024-04-16 | 四川科新机电股份有限公司 | Waste heat boiler without pipe plate |
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