CN202002516U - L-shaped array-tube heat exchanger - Google Patents
L-shaped array-tube heat exchanger Download PDFInfo
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- CN202002516U CN202002516U CN2011200356963U CN201120035696U CN202002516U CN 202002516 U CN202002516 U CN 202002516U CN 2011200356963 U CN2011200356963 U CN 2011200356963U CN 201120035696 U CN201120035696 U CN 201120035696U CN 202002516 U CN202002516 U CN 202002516U
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Abstract
The utility model relates to an L-shaped array-tube heat exchanger, belonging to the technical field of heat exchangers for the industry. The utility model has the technical scheme that the L-shaped array-tube heat exchanger comprises an upper pipe plate (2), a heat exchange chamber shell (3), heat exchange pieces (4) and a lower pipe plate (8), wherein the upper pipe plate is used as a high-temperature medium inlet; one end of each heat exchange piece, which is arranged in the heat exchange chamber shell, is fixed on the upper pipe plate, and the other end of each heat exchange piece is fixed on the lower pipe plate; and the heat exchange piece is communicated with the space outside the upper pipe plate and the lower pipe plate. The L-shaped array-tube heat exchanger is characterized in that the heat exchange pieces are distributed in the heat exchange chamber shell in a bending manner, and are arranged in the heat exchange chamber shell in an L-shaped structure or a similar L-shaped structure. In the L-shaped array-tube heat exchanger, the structure that the heat exchange pieces are distributed in the heat exchange body in a bending manner is adopted; the L-shaped array-tube heat exchanger has the characteristics that the structure is simple, the processing and the manufacture are convenient, the temperature stress is eliminated thoroughly and the like, the expansion and the deformation of the heat exchange pieces can be born for a long time, the long-period stable operation of the equipment is achieved, the service life is prolonged, the operation cost of the equipment is reduced, and the L-shaped array-tube heat exchanger is especially applicable to heat recovery or fast temperature reduction of high-temperature medium after chemical reaction.
Description
Technical field
The utility model relates to a kind of L shaped tubular heat exchanger, belongs to industrial technical field of heat exchangers.
Background technology
At present, the tubular heat exchanger of industrial usefulness, common have following two kinds of structures; First kind is that heat exchanger tube between upper perforated plate, the lower perforated plate is straight shape structure; Second kind is that employing tube sheet, a heat exchanger tube are the U-shaped structure.The tubular heat exchanger of first kind of upper and lower tube plate structure, the top of upper perforated plate can be used as reative cell or combustion chamber, existing problems are when medium temperature is higher in the straight tube shape tubular heat exchanger pipe, crackle often appears in the weld seam between tube sheet and the heat exchanger tube, cause device damage, influence service life and ordinary production; The top of the tube sheet of second kind of single tube plate U-shaped heat exchange of heat pipe then can not be as reative cell or combustion chamber, and the utility model is the improvement of carrying out at the tubular heat exchanger of first kind of upper and lower tube plate structure.
When the top of upper perforated plate during as the space of chemical reaction or burning, this space is generally cylindrical shell or other shape and structure, be referred to as reative cell or combustion chamber, the bottom of upper perforated plate is the device that high-temperature medium product after reaction or the burning is cooled off or carries out heat recovery fast, to be some heat exchanger tubes be arranged on structure in the Heat Room housing by upper perforated plate, lower perforated plate to its structure, total is referred to as tubular heat exchanger, and its operation principle is identical with fire tube heat recovery steam generator.Upper perforated plate is the end of reative cell or combustion chamber cylindrical shell, also is the top of Heat Room housing, in service at reactor, and crackle often appears in the weld seam between upper perforated plate and the heat exchanger tube, causes device damage, influences service life and ordinary production.The basic reason that weld seam between upper perforated plate and the heat exchanger tube cracks is: the heat exchange tube wall extends because of temperature is high, and Heat Room housing Yin Wendu is low and shorten (or elongation is few), and the two moves through upper perforated plate and produces conflict.In order to solve the problems of the technologies described above, people have considered a lot of schemes, and what have adds expansion joint on the Heat Room housing, allow distortion the Heat Room housing hold and make; The employing flexible tubesheet that has; Employing bellows tube that also has or the like; But because chemical reaction or combustion reaction are uneven local reaction sometimes, said method solves all that some is unable to do what one wishes, produces little effect, and is all not ideal enough, can not tackle the problem at its root.
The utility model content
The purpose of this utility model provides a kind of L shaped tubular heat exchanger, and is simple and reliable for structure, can bear the dilatancy of heat exchanging piece for a long time, thus the service life of extension reactor, and the operating cost of minimizing equipment solves the problems referred to above that background technology exists.
The technical solution of the utility model is:
A kind of L shaped tubular heat exchanger, comprise upper perforated plate, Heat Room housing, heat exchanging piece, lower perforated plate, upper perforated plate is arranged on the top of Heat Room, upper perforated plate is as the import of high-temperature medium, be arranged on that heat exchanging piece one end in the Heat Room housing is fixed on the upper perforated plate, the other end is fixed on the lower perforated plate, heat exchanging piece is communicated with upper perforated plate, lower perforated plate space outward, its special feature is some heat exchanging piece curved arrangement in the Heat Room housing, and crooked in the same direction jointly, L-shaped or similar L shaped structure is arranged in the Heat Room housing.
The shape of the profile of Heat Room housing and inner heat exchanging piece bending is complementary or is close, heat exchanging piece between upper perforated plate, the lower perforated plate and Heat Room housing are crooked synchronously, angle of bend is close, be L shaped or similar L shaped structure, angle of bend is greater than 0 degree, less than 180 degree, preferable angle of bend is 45-100 degree, and 90 degree are best angle of bend.
The cross sectional shape of said heat exchanging piece is arbitrarily, and quantity is arbitrarily, determines according to arts demand.The preferable shape of heat exchanging piece is a heat exchanger tube, and the cross section is tubular, and round tube is best.Some heat exchanger tubes are crooked in the same direction in the Heat Room housing, being parallel to each other or being similar to is arranged in parallel; Preferable mode is: heat exchanger tube is bowing, and the crooked circular arc of some heat exchanger tubes is parallel to each other or is approximate parallel.
Because heat exchanging piece between upper perforated plate, the lower perforated plate and heat exchanger shell are crooked synchronously, lower perforated plate is arranged on a side of Heat Room housing bottom, upper perforated plate and be provided with pore above the lower perforated plate, it in the Heat Room housing L shaped or similar L shaped heat-exchanging tube bundle, every pipe of heat-exchanging tube bundle is connected with the pore insertion of upper and lower tube sheet, and the method for attachment of every pipe and upper and lower tube sheet is welding or expanded joint, method of attachment all belongs to known technology, and heat exchanger tube is communicated with the space of upper perforated plate and lower perforated plate outside.
The said upper perforated plate of the utility model, lower perforated plate, its version are the tube plate structure form of fire tube heat recovery steam generator, and tube sheet itself is not as the part of the housing of Heat Room.
L shaped Heat Room housing of the present utility model is provided with heat transferring medium import and export, sewage draining exit etc., and said heat transferring medium is liquid or gas.
Good effect of the present utility model is: at the problem of straight tube shape tubular heat exchanger existence, adopt the structure of heat exchanging piece curved arrangement in the heat exchange body, have characteristics such as simple in structure, that processing and fabricating convenient, the thermal (temperature difference) stress removing is thorough, can bear the dilatancy of heat exchanging piece for a long time, equipment can long-period stable operation, increase the service life, reduce the operating cost of equipment, be specially adapted to the recuperation of heat of high-temperature medium behind the chemical reaction or the fast cooling of high-temperature medium.
The utility model can be applied in methanol oxidation and produce on the oxidator or other similar reactor of the reactor of formaldehyde, ammoxidation legal system nitric acid.
Description of drawings
Accompanying drawing 1 is the utility model schematic diagram;
Accompanying drawing 2 is example structure schematic diagrames of the utility model;
Among the figure: reative cell 1, upper perforated plate 2, Heat Room housing 3, heat exchanging piece 4, lower perforated plate 5, reaction-ure inlet 6, reactant outlet 7, heat transferring medium import 8, heat transferring medium outlet 9, sewage draining exit 10.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further by embodiment.
With reference to accompanying drawing 1, a kind of L shaped tubular heat exchanger, comprise upper perforated plate 2, Heat Room housing 3, heat exchanging piece 4, lower perforated plate 5, upper perforated plate is arranged on the top of Heat Room, the outside contact thermal source of upper perforated plate, direct import as high-temperature medium, heat exchanging piece one end that is arranged in the Heat Room housing is fixed on the upper perforated plate, the other end is fixed on the lower perforated plate, heat exchanging piece and upper perforated plate, the outer space of lower perforated plate is communicated with, its special feature is some heat exchanging piece curved arrangement in the Heat Room housing, and crooked in the same direction jointly, L-shaped or similar L shaped structure is arranged in the Heat Room housing.The profile of Heat Room housing is complementary with the shape of the heat exchanging piece bending of inside, and heat exchanging piece between upper perforated plate, the lower perforated plate and Heat Room housing are crooked synchronously, are L shaped or similar L shaped structure, and 90 degree are best angle of bend.The cross sectional shape round tube of said heat exchanging piece is best, and heat exchanger tube is bowing, and the crooked circular arc of some heat exchanger tubes is parallel to each other.Lower perforated plate is arranged on a side of Heat Room housing bottom, upper perforated plate and be provided with pore above the lower perforated plate, it in the Heat Room housing L shaped or similar L shaped heat-exchanging tube bundle, every pipe of heat-exchanging tube bundle, be connected with the pore insertion of upper perforated plate, lower perforated plate, the method of attachment of every pipe and last lower perforated plate is welding or expanded joint, and heat exchanger tube is communicated with the space of upper perforated plate and lower perforated plate outside.
Operation principle of the present utility model is: the high-temperature medium behind the generation chemical reaction enters in the heat exchange pipe of L shaped tube bank via upper perforated plate, heat exchanger tube is subjected to thermal stretching, owing to be L shaped heat-exchanging tube bundle structure, top power to the both sides tube sheet is very little, thereby avoids the weld seam between tube sheet and the heat exchanger tube crackle often to occur.The heat of pyroreaction thing is passed to the outer heat transferring medium of heat exchanger tube rapidly, after the high-temperature medium cooling, flows out lower perforated plate, and heat transferring medium is entered by the Heat Room housing, flows outside the pipe of L shaped heat pipe bundle, discharges behind the heat of pyroreaction thing in the absorption heat exchanger tube.
With reference to accompanying drawing 2, present embodiment is for taking methyl alcohol as reactor application the utility model of raw air catalytic oxidation system formaldehyde.
Be reative cell 1 above the upper perforated plate 2, reative cell is provided with reaction-ure inlet 6; Above the upper perforated plate of reative cell bottom silk screen is set, catalyst is set on the silk screen; Be L shaped heat-exchanging tube bundle in the Heat Room housing 3, and be connected with upper perforated plate 2, lower perforated plate 5, the thing outlet 7 that responds on the end socket that lower perforated plate connects, the Heat Room housing is provided with heat transferring medium import 8, sewage draining exit 10, and Heat Room housing top is provided with heat transferring medium outlet 9.Said that heat transferring medium is liquid or gas, for example water.
The embodiment course of work is: after unstripped gas under catalyst action oxidation reaction takes place, the pyroreaction thing enters in the heat exchange pipe of L shaped tube bank via upper perforated plate, heat exchanger tube is subjected to thermal stretching, owing to be L shaped heat-exchanging tube bundle structure, top power to the both sides tube sheet is very little, thereby avoids the weld seam between tube sheet and the heat exchanger tube crackle often to occur.The heat of pyroreaction thing is passed to the outer water of heat exchanger tube rapidly, after the cooling, flowing out lower perforated plate discharges through the outlet of low head reactant, feedwater is entered by the import of cooling chamber lower housing portion heat transferring medium, outside the pipe of L shaped heat pipe bundle, flow, vaporize behind the heat of pyroreaction thing in the absorption heat exchanger tube, liquid-vapor mixture is discharged by the heat transferring medium import on cooling chamber housing top.
Claims (8)
1. L shaped tubular heat exchanger, comprise upper perforated plate (2), Heat Room housing (3), heat exchanging piece (4), lower perforated plate (5), upper perforated plate is arranged on the top of Heat Room, upper perforated plate is as the import of high-temperature medium, be arranged on that heat exchanging piece one end in the Heat Room housing is fixed on the upper perforated plate, the other end is fixed on the lower perforated plate, heat exchanging piece is communicated with upper perforated plate, lower perforated plate space outward, its special feature is some heat exchanging piece curved arrangement in the Heat Room housing, and crooked in the same direction jointly, L-shaped or similar L shaped structure is arranged in the Heat Room housing.
2. according to the described L shaped tubular heat exchanger of claim 1, the profile that it is characterized in that institute's Heat Room housing is complementary with the shape of inner heat exchanging piece bending or is close, heat exchanging piece between upper perforated plate, the lower perforated plate and Heat Room housing are crooked synchronously, angle of bend is close, be L shaped or similar L shaped structure, angle of bend is greater than 0 degree, less than 180 degree.
3. according to claim 1 or 2 described L shaped tubular heat exchangers, it is characterized in that the preferable shape in cross section of said heat exchanging piece is a heat exchanger tube, the cross section is tubular.
4. according to claim 2 or 3 described L shaped tubular heat exchangers, it is characterized in that preferable angle of bend is 45-100 degree.
5. the L shaped tubular heat exchanger according to claim 3 is characterized in that some heat exchanger tubes are crooked in the Heat Room housing in the same direction, is parallel to each other or approximate being arranged in parallel.
6. the L shaped tubular heat exchanger according to claim 5 is characterized in that heat exchanger tube is bowing, and the crooked circular arc of some heat exchanger tubes is parallel to each other or is approximate parallel.
7. according to claim 2 or 3 described L shaped tubular heat exchangers, it is characterized in that lower perforated plate is arranged on a side of Heat Room housing bottom, upper perforated plate and be provided with pore above the lower perforated plate, it in the Heat Room housing L shaped or similar L shaped heat-exchanging tube bundle, every pipe of heat-exchanging tube bundle, insert with the pore of upper perforated plate, lower perforated plate and to be connected, every pipe is to weld or expanded joint with the method for attachment of upper perforated plate, lower perforated plate.
8. according to claim 1 or 2 described L shaped tubular heat exchangers, it is characterized in that the Heat Room housing is provided with heat transferring medium import and export, sewage draining exit, said heat transferring medium is liquid or gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200356963U CN202002516U (en) | 2011-02-10 | 2011-02-10 | L-shaped array-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200356963U CN202002516U (en) | 2011-02-10 | 2011-02-10 | L-shaped array-tube heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN202002516U true CN202002516U (en) | 2011-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200356963U Expired - Fee Related CN202002516U (en) | 2011-02-10 | 2011-02-10 | L-shaped array-tube heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712488A (en) * | 2013-12-12 | 2014-04-09 | 桂林华德机械设备有限公司 | Cooler for formaldehyde converted gas |
-
2011
- 2011-02-10 CN CN2011200356963U patent/CN202002516U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712488A (en) * | 2013-12-12 | 2014-04-09 | 桂林华德机械设备有限公司 | Cooler for formaldehyde converted gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20170210 |
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| CF01 | Termination of patent right due to non-payment of annual fee |