CN109883240B - A kind of high-temperature cooler circular cross-section shell structure and its design method - Google Patents
A kind of high-temperature cooler circular cross-section shell structure and its design method Download PDFInfo
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- CN109883240B CN109883240B CN201910228828.5A CN201910228828A CN109883240B CN 109883240 B CN109883240 B CN 109883240B CN 201910228828 A CN201910228828 A CN 201910228828A CN 109883240 B CN109883240 B CN 109883240B
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Abstract
The present invention relates to a kind of high-temperature cooler circular cross-section shell structure and its design methods, it is characterised in that: the high-temperature cooler circular cross-section shell structure includes shell inner cylinder, shell outer cylinder, plug welding intensive aspect and shell cooling medium;The shell inner cylinder is connected as one with shell outer cylinder by plug welding intensive aspect.Solve large scale (diameter is more than 2m) high-temperature gas (more than 6000K) cooler casing structure design in, because wall temperature it is excessively high caused by intensity and insufficient rigidity, substantially reduce metal material dosage, effectively reduce cost;It can effectively reduce the temperature difference of hot-fluid body sidewall Yu shell cooling medium side wall using the shell that thin-walled reinforcement structure designs, reduce shell structure thermal stress, improve stabilization of equipment performance, the runing time for shortening shell cooling medium subsystem after equipment is out of service simultaneously, reduces equipment operating cost.
Description
Technical field
It is more than 2m large scale high-temperature gas the present invention relates to design of heat exchanger manufacturing technology field more particularly to a kind of diameter
(temperature is more than 6000K) cooler casing structure and its design method.
Background technique
High-temperature gas cooler is most important heat-exchange system in arc tunnel.Common high-temperature gas cooler is by three
Part forms, heat exchanger tube battle array, shell (being wrapped in outside heat exchanger tube) and fluid dispensing unit.In arc tunnel operational process,
It is excessively high so as to cause wall temperature since upstream high-temperature gas can heat cooler casing, reduce the intensity of shell
And rigidity, it needs to design using water-cooling structure.Folder is used for the high-temperature gas cooler casing of large scale (diameter is more than 2m)
When layer water-cooling structure design, for the stiffness and strength for guaranteeing shell inside and outside wall, thick-walled structure design can bring metal material dosage
Increase, heat transfer effect is undesirable, and difficulty of processing increases, and especially heavy wall roll bending difficulty is greater than thin-walled roll bending difficulty.The prior art
In have following defects that
(1), existing heat exchanger standard is only applicable to the shell structure design that heat exchanging fluid temperature is lower than under the conditions of 2000K,
No relevant criterion and method are designed for the fluid device shell structure that heat exchanging fluid is more than 6000K.
(2) although, can guarantee using thick-walled structure the stiffness and strength requirement of shell load-carrying construction, for large scale
The high-temperature gas cooler casing metal material dosage of (diameter or heat exchange section be more than 2m) dramatically increases, increase invest at
This, while increasing difficulty of processing.
(3), using thick-walled structure, during arc tunnel equipment long-play, the wall surface temperature on hot-fluid side is significant
Higher than the temperature of shell cooling medium side wall surface, the thermal stress that thick-walled structure generates under identical temperature difference condition is drawn greater than thin-wall construction
The thermal stress risen, Yi Yinqi shell structure are destroyed.
(4), it after arc tunnel equipment is out of service, needs to continue to reduce case temperature as early as possible using thick-walled structure
It is cooling that shell cooling medium is provided for a long time, increases equipment operating cost.
Therefore, against the above deficiency, it is desirable to provide it is a kind of that design method is reinforced using thin-wall construction, guaranteeing shell rigidity
Under the premise of intensity, metal material dosage can be significantly reduced, improves shell wall side heat transfer effect, reduces difficulty of processing, is reduced
Operating cost.
(1) shell inner cylinder 1 and shell outer cylinder 2 use thin-wall construction that can effectively reduce metal material dosage.
(2) plug welding of spot distribution, which reinforces 3, can guarantee the integral strength and rigidity requirement of shell structure.
(3) shell inner cylinder 1 and shell outer cylinder 2 can reduce the difficulty of processing of cylinder using thin-wall construction, it is easy to accomplish become
Shape control.
(4) plug welding, which reinforces 3, will guarantee to connect reliably between shell inner cylinder 1 and shell outer cylinder 2, avoid pulling when the water pressure test
It destroys.
(5) 4 channel of shell cooling medium is set between shell inner cylinder 1 and shell outer cylinder 2, and heat exchange can be improved in thin-wall construction
Effect.
Summary of the invention
For the defects in the prior art, the present invention provides a kind of large scale high-temperature gas cooler casing structure and its
Design method is able to solve in the design of large scale (diameter is more than 2m) high-temperature gas (more than 6000K) cooler casing structure, because
Intensity caused by wall temperature is excessively high and insufficient rigidity, substantially reduce metal material dosage, effectively reduce cost;Using thin-walled plus
The shell of strong structure design can effectively reduce the temperature difference of hot-fluid body sidewall Yu shell cooling medium side wall, reduces shell structure heat and answers
Power improves stabilization of equipment performance, while the runing time of shell cooling medium subsystem is shortened after equipment is out of service, drop
Low equipment operating cost.
In order to solve the above-mentioned technical problem, the present invention is on the basis of traditional heat exchangers housing design, proposes a kind of new
Construction design method.
A kind of high-temperature cooler circular cross-section shell structure and its design method, the high-temperature cooler circular cross-section shell
Structure includes shell inner cylinder 1, shell outer cylinder 2, plug welding intensive aspect 3 and shell cooling medium 4;1 inside of the shell inner cylinder with
Hot fluid contact, outside is contacted with shell cooling medium 4;2 inside of shell outer cylinder is contacted with shell cooling medium 4, outside
It is contacted with external environment;The shell inner cylinder 1 is connected as one with shell outer cylinder 2 by plug welding intensive aspect 3.
Particularly, the pressure from hot fluid is born on the inside of the shell inner cylinder 1, bears shell on the outside of the shell inner cylinder 1
The pressure of body cooling medium 4.
Particularly, the pressure from shell cooling medium 4,2 outside of shell outer cylinder are born on the inside of the shell outer cylinder 2
Bear ambient pressure environment.
Particularly, (size in hole is implemented according to welding standard) is punched on the shell outer cylinder 2, passes through plug welding intensive aspect
3 by the outside of shell inner cylinder 1 with weld together on the inside of shell outer cylinder 2.
Particularly, the shell inner cylinder 1 and shell outer cylinder 2 are all made of thin-wall construction.
Particularly, the plug welding intensive aspect 3 meets the rigid of shell under the conditions of shell inner cylinder 1 and shell 2 small wall thickness of outer cylinder
Degree and intensity requirement.
Particularly, 1 outer wall of shell inner cylinder is welded with connection ring 5, and connection ring 5 offers hole, and plug welding intensive aspect 3 passes through
Shell outer cylinder 2 is inserted into the hole in connection ring 5, and plug welding intensive aspect 3 is inserted into 5 one end of connection ring and offers the conical surface 31,31 bus of the conical surface
It is 20 degree with 3 side angle of plug welding intensive aspect, is plugged with aluminium ring 6 outside the conical surface 31,6 outer end face of aluminium ring is abutted with connection ring 5.
Particularly, iron hoop 7 is socketed with outside the part that plug welding intensive aspect 3 is located in shell outer cylinder 2, iron hoop 7 is round table-like ring,
Iron hoop 7 is embedded in shell outer cylinder 2.
A kind of high-temperature cooler circular cross-section shell structure and its design method, the design method comprise the following steps:
According to the maximum temperature parameter being likely to be breached on the inside of the stress condition of working environment lower case structure and shell inner cylinder
Selected case material;
According to shell structure stress condition, and consider that case material is heated situation, primarily determines shell structure using interlayer
The structural shape and shell inner cylinder and shell outer cylinder wall thickness of water cooling, determine that shell structure maintains temperature allowable by Calculation of Heat Transfer
Cooling water amount and cooling effect under degree;
It is analyzed according to the strength and stiffness of the shell structure primarily determined as a result, selecting the type for reinforcing design using plug welding
Formula advanced optimizes analysis using plate minimum thickness as objective function, reduces the thickness for selecting plate, reduces the shell of metal
Structure and material dosage;
According to the shell structure Cooling Design pattern of optimized determination, pass through strength and stiffness design & check design result
Until structure is formed;The shell structure includes shell inner tube structure and shell outer tube structure;
The plate of production shell inner cylinder and shell outer cylinder is cut according to design data, and is welded to connect on shell inner cylinder
Ring, the aperture on shell outer cylinder and connection ring, rolls into cylinder for plate later later;
By shell outer sleeve outside shell inner cylinder, and shell outer cylinder and shell inner cylinder one end be plugged on and opens up that there are two circles
The pedestal of shape slot is overlapped shell outer cylinder with shell inner cylinder axis;
The plug welding intensive aspect of aluminium ring in grafting is inserted into the hole in connection ring, then iron hoop is inserted into shell outer cylinder, it
After welded;
Finally the part of the part of the prominent shell outer cylinder of plug welding intensive aspect and the prominent shell outer cylinder of solder joint is beaten using grinding wheel
It grinds off, guarantees that the outer drum outer wall of shell is smooth.
Implement of the invention, has the advantages that
The invention proposes a kind of high-temperature cooler circular cross-section shell thin-walled interlayers to reinforce design structure, realizes large scale
(diameter is more than 2m) high-temperature gas (more than 6000K) cooler casing rigidity of structure, intensity, heat transfer requirements, to solve high temperature
Gas cooler casing metal dosage is more, and investment is big, and difficult processing, heat transfer effect is poor, the problems such as operating cost height.
(1) structure is simple, convenient for construction, only can guarantee shell structure use intensity by increasing plug welding reinforcement design
With effectively reduce shell plate thickness under conditions of rigidity, save metal material dosage.Such as, for length 4m, the height of diameter 2m
Warm cooler casing, using the structural strengthening design method of the invention, under identical use condition, can by the inner wall thickness of shell by
44mm is reduced to 10mm, saves metal material about 76%.
(2) versatile, which is not only widely used to the cooling knot of shell of all kinds of large high-temperature heat exchangers
Structure design, while being also applied for needing other major diameter high-temperature pipes of Cooling Design to design.
(3) low cost manufacturing, Deformation control, high efficient heat exchanging and the low cost fortune of large scale high-temperature heat-exchanging shell are realized
Row.By taking the manufacture of diameter 2m circular cylindrical shell as an example, the sheet metal of thickness 10mm is rolled into the difficulty and cost of diameter 2m cylinder,
Difficulty and cost are rolled significantly lower than thickness 44mm sheet metal.
Detailed description of the invention
Fig. 1 is one large scale high-temperature gas cooler casing partial side view of the embodiment of the present invention;
Fig. 2 is one large scale high-temperature gas cooler casing structural schematic diagram of the embodiment of the present invention;
Fig. 3 is one large scale high-temperature gas cooler casing connection structure diagram of the embodiment of the present invention.
In figure:
1: shell inner cylinder;2: shell outer cylinder;3: plug welding intensive aspect;31: the conical surface;4: shell cooling medium;5: connection ring;6:
Aluminium ring;7: iron hoop.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Design principle:
The maximum temperature ginseng being likely to be breached according to the stress condition of working environment lower case structure and inner cylinder hot-fluid body sidewall
Number determines case material selection;
According to the stress of shell structure material and heated situation, primarily determine that shell structure uses the structural type of interlayer water cooling
The thickness of formula and inside and outside wall material determines that shell structure material maintains the cooling water under allowable temperature and uses by Calculation of Heat Transfer
Amount and cooling effect;
It is analyzed according to the strength and stiffness of the shell structure primarily determined as a result, selecting the type for reinforcing design using plug welding
Formula advanced optimizes analysis using plate minimum thickness as objective function, reduces the thickness for selecting plate, reduces metal consumption;
According to the shell structure Cooling Design pattern of optimized determination, pass through strength and stiffness design & check design result
Until structure is formed.
Embodiment one
As depicted in figs. 1 and 2, it a kind of high-temperature cooler circular cross-section shell structure provided in an embodiment of the present invention and its sets
Meter method, the high-temperature cooler circular cross-section shell structure include shell inner cylinder 1, shell outer cylinder 2, plug welding intensive aspect 3 and
Shell cooling medium 4;1 inside of shell inner cylinder is contacted with hot fluid, and outside is contacted with shell cooling medium 4;The shell
2 inside of outer cylinder is contacted with shell cooling medium 4, and outside is contacted with external environment;The shell inner cylinder 1 passes through with shell outer cylinder 2
Plug welding intensive aspect 3 is connected as one, and improves the integral strength and rigidity of shell.
The pressure from hot fluid is born on the inside of the shell inner cylinder 1, bears cooling medium 4 outside the shell inner cylinder 1
Pressure.
The pressure from shell cooling medium 4 is born on the inside of the shell outer cylinder 2, is born on the outside of the shell outer cylinder 2 outer
Boundary's environmental pressure.
(size in hole is implemented according to welding standard) is punched on the shell outer cylinder 2, by plug welding intensive aspect 3 by shell
The outside of inner cylinder 1 with weld together on the inside of shell outer cylinder 2, play the role of local strengthening.
The shell inner cylinder 1 and shell outer cylinder 2 are all made of thin-wall construction.Firstly, the thin-wall construction reduces difficulty of processing,
Reduce processing cost.Secondly, the thin-wall construction reduces heat transfer time of the hot fluid side wall towards 4 side of shell cooling medium,
Heat transfer efficiency is improved, the wall temperature for being conducive to control shell inner cylinder 1 is maintained in safe temperature range.Most of all, using
Thin-wall construction is conducive to after main equipment is out of service, and the temperature of shell structure is made to reach room temperature within a short period of time, reduces
The runing time of 4 transport system of shell cooling medium, reduces equipment operating cost.Finally, being easy to real using thin-wall construction
The Deformation control now welded.For example, for length 4m, the high-temperature cooler shell of diameter 2m, using structural strengthening of the invention
The inner wall thickness of shell under identical use condition, can be reduced to 10mm by 44mm, save metal material about by design method
76%.
The plug welding intensive aspect 3 meets the stiffness and strength of shell under the conditions of shell inner cylinder 1 and shell 2 small wall thickness of outer cylinder
It is required that reducing cost of investment to reduce the metal material dosage of shell inner cylinder 1 and shell outer cylinder 2.In addition plug welding is reinforced
Body 3 ensure that and connect reliably between shell inner cylinder 1 and shell outer cylinder 2, avoid pulling destruction when the water pressure test.
The plug welding intensive aspect 3 uses jump discontinuity welding technology in the welding process, can reduce large scale entire body and is welding
The deformation generated in termination process.
The distance between the circumferentially-adjacent plug welding point distance D1 and axially adjacent plug welding point of the plug welding intensive aspect 3 D2 needs
Consider that shell inner cylinder and the outer cylinder material of shell and wall thickness determine.
As shown in Figures 2 and 3,1 outer wall of shell inner cylinder is welded with connection ring 5, and connection ring 5 is steel stock through rolling
The annulus of formation, connection ring 5 offer hole, and because connection ring 5 is in curling, hole also deforms therewith, then crimps cyclization in connection ring 5
When, the pass is round table-like;Plug welding intensive aspect 3 is steel column block, and 3 outer diameter of plug welding intensive aspect is less than shell outer cylinder 2 and connects
The aperture on ring 5 is connect, plug welding intensive aspect 3 passes through the hole that shell outer cylinder 2 is inserted into connection ring 5, and plug welding intensive aspect 3 is inserted into connection ring
5 one end offer the conical surface 31, and 31 bus of the conical surface and 3 side angle theta of plug welding intensive aspect are 20 degree, are plugged with aluminium ring 6 outside the conical surface 31,
6 inner ring section of aluminium ring be it is round table-like, 6 outer ring section of aluminium ring is rectangle, and 6 outer end face of aluminium ring and connection ring 5 are interference fitted.
Pass through setting connection ring 5 and be inserted into plug welding intensive aspect 3 in connection ring 5, can avoid shell outer cylinder 1 and shell inner cylinder
2 occur relative displacement in the axial direction;Opening up the conical surface 31 in plug welding intensive aspect 3 can enable plug welding intensive aspect 3 be inserted into connection ring 5
It is interior, while cooperating aluminium ring 6, the gap between plug welding intensive aspect 3 and connection ring 5 is filled up using the excellent plasticity of aluminium ring 6, is made
Plug welding intensive aspect 3 is stably connected with connection ring 5, and in the welding after progress, plug welding intensive aspect 3 by high temperature conduct to
At aluminium ring 6, aluminium fusing point is lower than iron, then aluminium ring 6 dissolves the further gap between filling plug welding intensive aspect 3 and connection ring 5, matches
The deformation of 3 expanded by heating of plug welding intensive aspect is closed, plug welding intensive aspect 3 and 5 fixing-stable of connection ring are made.
As shown in Figures 2 and 3, it is socketed with iron hoop 7 outside the part that plug welding intensive aspect 3 is located in shell outer cylinder 2, iron hoop 7 is
Round table-like ring, iron hoop 7 are embedded in shell outer cylinder 2, have gap between 2 outer end face of 7 outer end face of iron hoop and shell outer cylinder;It is installing
After plug welding intensive aspect 3, because the aperture of shell outer cylinder 2 is greater than the outer diameter of plug welding intensive aspect 3, plug welding can be stablized by being inserted into iron hoop 7 at this time
The position of intensive aspect 3 enables the axis of plug welding intensive aspect 3 and the radial direction of shell outer cylinder 2 to be overlapped, and guarantees plug welding intensive aspect 3
Supporing shell outer cylinder 2 can be stablized;Simultaneously in welding, plug welding intensive aspect 3 and shell outer cylinder 2 can be made to be fitted close, so that welding
Work can be gone on smoothly, and make between iron hoop 7 and shell outer cylinder 2 that there are gaps, and solder joint is enable to flow into gap, reduce solder joint
Amount on exposed shell outer cylinder 2 reduces the difficulty of subsequent polishing work.
Embodiment two
Another technical solution of the application is a kind of high-temperature cooler circular cross-section shell structure design method, described to set
Meter method comprises the following steps:
According to the maximum temperature parameter being likely to be breached on the inside of the stress condition of working environment lower case structure and shell inner cylinder
Selected case material selection;
According to shell structure stress condition, and consider that case material is heated situation, primarily determines shell structure using interlayer
The structural shape and shell inner cylinder and shell outer cylinder wall thickness of water cooling, determine that shell structure maintains temperature allowable by Calculation of Heat Transfer
Cooling water amount and cooling effect under degree;
It is analyzed according to the strength and stiffness of the shell structure primarily determined as a result, selecting the type for reinforcing design using plug welding
Formula advanced optimizes analysis using plate minimum thickness as objective function, reduces the thickness for selecting plate, reduces metal shell material
Expect dosage;
According to the shell structure Cooling Design pattern of optimized determination, pass through strength and stiffness design & check design result
Until structure is formed;The shell structure includes shell inner tube structure and shell outer tube structure;
The plate of production shell inner cylinder and shell outer cylinder is cut according to design data, and is welded to connect on shell inner cylinder
Ring, the aperture on shell outer cylinder and connection ring, rolls into cylinder for plate later later;
By shell outer sleeve outside shell inner cylinder, and shell outer cylinder and shell inner cylinder one end be plugged on and opens up that there are two circles
The pedestal of shape slot is overlapped shell outer cylinder with shell inner cylinder axis;
The plug welding intensive aspect of aluminium ring in grafting is inserted in the hole, then iron hoop is inserted into shell outer cylinder, is welded later;
Finally the part of the part of the prominent shell outer cylinder of plug welding intensive aspect and the prominent shell outer cylinder of solder joint is beaten using grinding wheel
It grinds off, guarantees that the outer drum outer wall of shell is smooth.
In conclusion the configuration of the present invention is simple only can guarantee shell by increasing plug welding reinforcement design convenient for construction
Shell plate thickness is effectively reduced under conditions of structure use intensity and rigidity, saves metal material dosage.For example, for length
The high-temperature cooler shell of 4m, diameter 2m, can be by shells under identical use condition using the structural strengthening design method of the invention
The inner wall thickness of body is reduced to 10mm by 44mm, saves metal material about 76%.
Secondly, the present invention is versatile, the method for the present invention not only can be widely applied to the shell of all kinds of large high-temperature heat exchangers
The design of body cooling structure, while being also applied for needing other major diameter high-temperature pipes of Cooling Design to design.
To realize low cost manufacturing, Deformation control, high efficient heat exchanging and the low cost of large scale high-temperature heat-exchanging shell
Operation.By diameter 2m circular cylindrical shell manufacture for, by the sheet metal of thickness 10mm roll into diameter 2m cylinder difficulty and at
This, hence it is evident that difficulty and cost are rolled lower than thickness 44mm sheet metal.
It solves in the design of large scale (diameter is more than 2m) high-temperature gas (more than 6000K) cooler casing structure, because of shell
Intensity caused by body wall temperature is excessively high and insufficient rigidity, substantially reduce metal material dosage, effectively reduce cost;Reinforced using thin-walled
The shell of structure design can effectively reduce the temperature difference of hot-fluid body sidewall Yu shell cooling medium side wall, reduces shell structure heat and answers
Power improves stabilization of equipment performance, while the runing time of shell cooling medium subsystem is shortened after equipment is out of service, drop
Low equipment operating cost.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features;
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (8)
1. a kind of high-temperature cooler circular cross-section shell structure, it is characterised in that: the high-temperature cooler circular cross-section shell knot
Structure includes shell inner cylinder (1), shell outer cylinder (2), plug welding intensive aspect (3) and shell cooling medium (4);
It is contacted on the inside of the shell inner cylinder (1) with hot fluid, outside is contacted with shell cooling medium (4);
It is contacted on the inside of the shell outer cylinder (2) with shell cooling medium (4), outside is contacted with external environment;
The shell inner cylinder (1) is connected as one with shell outer cylinder (2) by plug welding intensive aspect (3);
Shell inner cylinder (1) outer wall is welded with connection ring (5), and connection ring (5) offers hole, and plug welding intensive aspect (3) passes through shell
Hole on external cylinder (2) insertion connection ring (5), plug welding intensive aspect (3) insertion connection ring (5) one end offer the conical surface (31), bore
Face (31) bus and plug welding intensive aspect (3) side angle are 20 degree, are plugged with aluminium ring (6) outside the conical surface (31), aluminium ring (6) outer end face
It is abutted with connection ring (5).
2. a kind of high-temperature cooler circular cross-section shell structure according to claim 1, it is characterised in that: in the shell
The pressure from hot fluid is born on the inside of cylinder (1), and the pressure of shell cooling medium (4) is born on the outside of the shell inner cylinder (1).
3. a kind of high-temperature cooler circular cross-section shell structure according to claim 1, it is characterised in that: outside the shell
The pressure from shell cooling medium (4) is born on the inside of cylinder (2), bears ambient pressure environment on the outside of the shell outer cylinder (2).
4. a kind of high-temperature cooler circular cross-section shell structure according to claim 1, it is characterised in that: in the shell
Outer cylinder punches on (2), will be welded together on the outside of shell inner cylinder (1) with shell outer cylinder (2) inside by plug welding intensive aspect (3).
5. a kind of high-temperature cooler circular cross-section shell structure according to claim 1, it is characterised in that: in the shell
Cylinder (1) and shell outer cylinder (2) are all made of thin-wall construction.
6. a kind of high-temperature cooler circular cross-section shell structure according to claim 1, it is characterised in that: the plug welding adds
Strong body (3) meets the stiffness and strength requirement of shell under the conditions of shell inner cylinder (1) and shell outer cylinder (2) thin-walled.
7. a kind of high-temperature cooler circular cross-section shell structure according to claim 1, it is characterised in that: plug welding intensive aspect
(3) it is socketed with iron hoop (7) outside the part being located in shell outer cylinder (2), iron hoop (7) is round table-like ring, and iron hoop (7) is embedded in outside shell
In cylinder (2).
8. a kind of high-temperature cooler circular cross-section shell structure design method, which is characterized in that the design method includes as follows
Step:
It is selected according to the maximum temperature parameter being likely to be breached on the inside of the stress condition of working environment lower case structure and shell inner cylinder
Case material;
According to shell structure stress condition, and consider that case material is heated situation, primarily determines shell structure using interlayer water cooling
Structural shape and shell inner cylinder and shell outer cylinder wall thickness, determine that shell structure maintains under allowable temperature by Calculation of Heat Transfer
Cooling water amount and cooling effect;
According to the analysis of the strength and stiffness of the shell structure primarily determined as a result, selecting the pattern for reinforcing design using plug welding, with
Plate minimum thickness is objective function, advanced optimizes analysis, reduces the thickness for selecting plate, reduce the shell structure of metal with
Material utilization amount;
According to the shell structure Cooling Design pattern of optimized determination, by strength and stiffness design & check design result until
Structure sizing;
The plate of production shell inner cylinder and shell outer cylinder is cut according to design data, and is welded to connect ring on shell inner cylinder, it
The aperture on shell outer cylinder and connection ring afterwards, rolls into cylinder for plate later;
By shell outer sleeve outside shell inner cylinder, and shell outer cylinder and shell inner cylinder one end be plugged on and opens up that there are two circular troughs
Pedestal, be overlapped shell outer cylinder with shell inner cylinder axis;
By in grafting aluminium ring plug welding intensive aspect insertion connection ring on hole in, then by iron hoop be inserted into shell outer cylinder in, it is laggard
Row welding;
Finally the part of the part of the prominent shell outer cylinder of plug welding intensive aspect and the prominent shell outer cylinder of solder joint is polished off using grinding wheel,
Guarantee that the outer drum outer wall of shell is smooth.
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DK140676B (en) * | 1971-06-25 | 1979-10-22 | Peter Skjoede Knudsen | Heat exchanger with circular trickle surface. |
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CN103075906B (en) * | 2013-02-02 | 2015-04-22 | 中国科学院工程热物理研究所 | High-pressure heat-storing/or cold-storing device |
CN103225963A (en) * | 2013-04-22 | 2013-07-31 | 吴国存 | Efficient ripple thin-walled condensing heat exchanger |
CN204881279U (en) * | 2015-08-10 | 2015-12-16 | 上海耐利流体设备有限公司 | Novel honeycomb that heated in area, coolant distributes ring presss from both sides cover |
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CN207513021U (en) * | 2017-11-20 | 2018-06-19 | 中交第二航务工程局有限公司 | A kind of perforation plug welding pre-buried structure of steel kind design |
CN108332601A (en) * | 2018-01-26 | 2018-07-27 | 东方电气集团东方锅炉股份有限公司 | A kind of internal fixing structure and its manufacturing method of jacketed type exchanger |
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