CN211451970U - Pre-heater before tower - Google Patents
Pre-heater before tower Download PDFInfo
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- CN211451970U CN211451970U CN201922194686.3U CN201922194686U CN211451970U CN 211451970 U CN211451970 U CN 211451970U CN 201922194686 U CN201922194686 U CN 201922194686U CN 211451970 U CN211451970 U CN 211451970U
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Abstract
The utility model provides a pre-heater in front of a tower, which comprises a machine body and a heat pipe device arranged in the machine body, wherein the heat pipe device comprises a heat exchange pipe, a fixing plate and a sealing mechanism, a plurality of intercommunicating pores corresponding to the heat exchange pipe are arranged on the fixing plate, the diameter of the intercommunicating pores is larger than that of the heat exchange pipe, the sealing mechanism comprises a sealing base fixedly arranged on the fixing plate, a sealing sleeve sleeved on the sealing base and a plurality of supporting components inserted on the sealing sleeve, each supporting component comprises a plurality of supporting bent plates, supporting columns and screwing nuts, one end of each supporting column can be rotatably inserted in each supporting bent plate, the other end of each supporting column penetrates through the sealing sleeve, the screwing nuts are sleeved on the supporting columns in a matching way, the screwing nuts can support the outer walls of the sealing sleeves after rotating on the supporting columns, the heat exchange pipe can be fixed in the intercommunicating, thereby allowing the swollen and deformed heat exchange tube to be withdrawn from the communication hole.
Description
Technical Field
The utility model relates to a gas heating technical field especially relates to a pre-heater before tower.
Background
The ethylbenzene entering the reaction tower is heated by a preheater which usually adopts a horizontal tube-and-tube heat exchanger, namely, the preheater comprises a shell and heat exchange tubes, ethylbenzene flows through the shell, gas phase heating materials (such as high-temperature supersaturated steam, heated nitrogen or other heatable inert gases) flow through the heat exchange tubes, the gas phase heating materials in the heat exchange tubes and the ethylbenzene in the shell carry out heat exchange, the ethylbenzene is discharged into a reaction tower after being heated to a specified temperature, in the process of heating ethylbenzene, the inner wall and the outer wall of the heat exchange tube are alternately cooled and heated, the tube body of the heat exchange tube is locally deformed under the influence of long-time expansion and contraction, the diameter of the heat exchange tube is changed, in order to prevent ethylbenzene from being mixed with gas-phase hot materials and leaking, the end part fixed connection part of the heat exchange tube is sealed in a matching way, the sealing performance of the ethylbenzene containing cavity in the shell is improved, and the heat exchange tube is inconvenient to disassemble and replace after the diameter of the heat exchange tube is changed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pre-heater before tower convenient to change heat exchange tube.
The utility model provides a technical scheme that its technical problem adopted is: a pre-heater before tower comprises a machine body and a heat pipe device arranged in the machine body, wherein the heat pipe device comprises a heat exchange pipe arranged in the machine body, a fixing plate arranged at the end part of the heat exchange pipe and a sealing mechanism arranged at the joint of the heat exchange pipe and the fixing plate, a plurality of communication holes corresponding to the heat exchange pipe are formed in the fixing plate, the diameter of each communication hole is larger than that of the heat exchange pipe, the sealing mechanism comprises a sealing base fixedly arranged on the fixing plate, a sealing sleeve sleeved on the sealing base and a plurality of abutting components inserted in the sealing sleeve, each abutting component comprises a plurality of abutting curved plates uniformly arranged around the heat exchange pipe, abutting columns rotatably abutted to the abutting curved plates and screwing nuts sleeved on the abutting columns, and the abutting curved plates can be attached to the circumferential surface of the end part of the heat exchange pipe, one end of the abutting column is rotatably inserted into the abutting bent plate, the other end of the abutting column penetrates through the sealing sleeve, the screwing nut is sleeved on the abutting column in a matching mode, and the screwing nut can abut against the outer wall of the sealing sleeve after rotating on the abutting column.
Furthermore, the supporting bent plate is convexly provided with an accommodating cylinder, the accommodating cylinder is arranged along the radial direction of the heat exchange tube, and the supporting column is rotatably inserted into the accommodating cylinder.
Furthermore, support and hold the post epirelief and be equipped with the limiting plate, the limiting plate can overlap joint extremely on the port of a holding section of thick bamboo, support and still cooperate the cover to be equipped with on holding the post and press and hold the sleeve, press and hold the sleeve and establish extremely with screw-thread fit's mode cover hold on the section of thick bamboo, press and hold the sleeve cooperation it is right to hold a section of thick bamboo the limiting plate carries on spacingly.
Further, the sealed base epirelief is equipped with fixed boss, the sealing sleeve cover establish extremely on the fixed boss, the cover is equipped with the sealing ring on the fixed boss, the sealing ring laminating sets up fixed boss with between the sealing sleeve.
Furthermore, a bearing ring is convexly arranged on the inner wall of the end part, far away from the fixed plate, of the sealing sleeve, and the heat exchange tube is lapped on the sealing sleeve through the bearing ring.
Furthermore, the fixed plate has two, and two fixed plates are established respectively the both sides of organism strip, the heat pipe device still includes the fixed square pole, fixed square pole fixed mounting is in two between the fixed plate.
Furthermore, the pre-heater before the tower further comprises a plurality of baffle plates, the baffle plates are sequentially and uniformly arranged along the axial direction of the fixed-moment rod, and the heat exchange tubes penetrate through the fixed plate and the baffle plates.
Furthermore, the baffle plates are provided with gaps, and the gaps on two adjacent baffle plates are arranged far away from each other.
Furthermore, a feeding cavity and a discharging cavity which are respectively arranged at two ends of the machine body are formed between the baffle plate and the fixing plate in a clamping mode, a feeding pipe communicated to the feeding cavity is arranged on the machine body, and a discharging pipe communicated to the discharging cavity is further arranged on the machine body.
The beneficial effects of the utility model are that, set up the intercommunicating pore that the diameter is greater than the heat exchange tube on the fixed plate, and use sealed sleeve and seal base to enclose and establish the intercommunicating pore, make to constitute the cavity of stepping down that the diameter is greater than the heat exchange tube between fixed plate and the sealed sleeve, sealed sleeve and seal base all can cover and establish sealed intercommunicating pore, thereby guarantee the leakproofness of junction between heat exchange tube and the fixed plate, but sealed sleeve relatively fixed plate dismantles simultaneously, make the heat exchange tube after warping, sealed sleeve can directly follow the heat exchange tube and pull down, and the heat exchange tube can be followed and is taken out in the cavity of stepping down, the heat exchange tube after warping can be taken out in the intercommunicating pore.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a perspective view of a pre-heater in front of a tower according to the present invention;
FIG. 2 is a schematic view of the heat exchange tubes of the pre-heater of FIG. 1 mounted on a fixed plate;
FIG. 3 is a cross-sectional view of the connecting heat exchange tubes and the fixed plate in the pre-heater of FIG. 2;
in the figure:
pre-tower preheater 100 housing 10 steam hood 20
Fixing plate 320 of heat exchange tube 310 of discharge tube 120
Constant-moment rod sealing mechanism 340 communication hole 321
The supporting curved plate 3431 and the supporting column 3432 tighten the nut 3433
Accommodating cylinder 3434 limiting plate 3435 pressing sleeve 3436
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
As shown in fig. 1 to 3, the present invention provides a pre-heater 100 before tower, which comprises a machine body 10, steam hoods 20 symmetrically installed at both sides of the machine body 10, a heat pipe device 30 installed inside the machine body 10, and a plurality of baffle plates 40 installed on the heat pipe structure 30. Ethylbenzene is injected into the machine body 10, steam is injected into the steam hood 20 on one side of the machine body 10, the steam passes through the machine body 10 through the heat pipe structure 30 and flows to the steam hood 20 on the other side of the machine body 10, and heat exchange is generated between the steam and the ethylbenzene in the flowing process, so that the temperature of the ethylbenzene is heated to the temperature required by the absorption tower.
The machine body 10 is a cylindrical cavity structure with two open ends, a feed pipe 110 and a discharge pipe 120 are mounted on the circumferential surface of the machine body 10, the feed pipe 110 and the discharge pipe 120 are both communicated to the inside of the machine body 10, ethylbenzene enters the machine body 10 from the feed pipe 110, and the ethylbenzene is discharged to the reaction tower from the discharge pipe 120 after being heated in the machine body 10. The steam cover 20 is fixedly installed on the openings at the two ends of the machine body 10, the openings on the steam cover 20 correspond to the pipe openings, and the gas-phase hot material enters from one side of the steam cover and is discharged from the steam cover 20 at the other side after the heat exchange process is completed.
The heat pipe device 30 includes a plurality of heat exchange pipes 310 communicating the two vapor hoods 20, fixing plates 320 installed at both end portions of the heat exchange pipes 310, a fixed moment rod 330 disposed between the two fixing plates 320, and a sealing mechanism 340 disposed at a junction of the heat exchange pipes 310 and the fixing plates 320.
Two fixed plates 320 are fixed respectively at the both ends of deciding square pole 330, fixed plate 320 fixed mounting is on the inner wall of organism 10, the both ends of heat exchange tube 310 all permeate through fixed plate 320 and communicate to in steam hood 20, heat exchange tube 310 sets up along the surface array of fixed plate 320, set up the intercommunicating pore 321 that the diameter is greater than the external diameter of heat exchange tube 310 on the fixed plate 320, the both ends of heat exchange tube 310 all alternate in intercommunicating pore 321, baffling board 40 arranges in proper order along the axial of deciding square pole 330, baffling board 40 is the discoid of opening jagged, the lateral wall sealing connection of baffling board 40 is to on the inner wall of organism 10, the breach orientation on two. The baffle plate 40 and the two fixing plates 320 are clamped to form a feeding cavity and a discharging cavity which are respectively arranged at two ends of the machine body 10, the feeding pipe 110 is communicated to the feeding cavity, the discharging pipe 120 is communicated to the discharging cavity, and the feeding cavity and the discharging cavity are communicated with each other through a gap of the baffle plate 40.
The sealing mechanism 340 includes a sealing base 341 fixedly mounted on the fixing plate 320, a sealing sleeve 342 sleeved on the sealing base 341, and a plurality of abutting assemblies 343 inserted in the sealing sleeve 342.
The sealing base 341 is disposed at an orifice of the communication hole 321 on the fixing plate 320, which is away from the baffle plate 40, the sealing base 341 is provided with a fixing boss 344 in a protruding manner, the sealing sleeve 342 is sleeved on the fixing boss 344, preferably, the fixing boss 344 is sleeved with a sealing ring 345, and the sealing ring 345 is fitted between the fixing boss 344 and the sealing sleeve 342. The inner wall of the end part of the sealing sleeve 342 far away from the sealing ring 345 is convexly provided with a bearing ring 346, the heat exchange tube 310 is lapped on the sealing sleeve 342 through the bearing ring 346, and the heat exchange tube 310 penetrates through the sealing sleeve 342 and is communicated into the steam hood 20 after penetrating through the communication hole 321.
The supporting component 343 includes a plurality of supporting curved plates 3431 surrounding the heat exchanging pipe 310, supporting columns 3432 movably supporting to the supporting curved plates 3431, and tightening nuts 3433 covering the supporting columns 3432.
The supporting curved plate 3431 is movably arranged between the sealing sleeve 342 and the heat exchange tube 310, the supporting curved plates 3431 are uniformly arranged along the circumferential direction of the heat exchange tube 310, an accommodating tube 3434 is arranged on the supporting curved plate 3431 in a protruding manner along the radial direction of the heat exchange tube 310, one end of the supporting column 3432 is inserted into the accommodating tube 3434, the other end of the supporting column 3432 is arranged through the side wall of the sealing sleeve 342, a limit plate 3435 is arranged on the supporting column 3432 in a protruding manner, the limit plate 3435 can be supported on the opening end of the accommodating tube 3434, a pressing sleeve 3436 is sleeved on the supporting column 3432 in a matching manner, the pressing sleeve 3436 is sleeved on the accommodating tube 3434 in a threaded manner, and the limit plate 3435 is slidably arranged between the pressing sleeve 3436 and the accommodating tube 3434. The tightening nut 3433 is screwed onto the supporting column 3432, and the tightening nut 3433 can be pressed against the sealing sleeve 342 after rotating on the supporting column 3432. Preferably, the sealing sleeve 342 and the heat exchange tube 310 are sealed by packing.
When the pre-heater 100 before the tower is used, an ethylbenzene material is injected into the machine body 10 through the feeding pipe 110, a gas-phase hot material is injected into the steam cover 20 through a pipe opening on the steam cover 20, the gas-phase hot material enters the steam cover 20 on the other side through the heat exchange pipe 310 in the machine body, the ethylbenzene flows in the machine body 10 along the gap on the baffle plate 40, when the ethylbenzene flows in the machine body 10, heat exchange is performed between the ethylbenzene and the gas-phase hot material in the heat exchange pipe 310, the heated ethylbenzene is discharged out of the machine body through the discharging pipe 120, and the gas-phase hot material in the heat exchange pipe 310 is discharged through the pipe opening on the steam cover 20 after use.
When the heat exchange tube 310 in the heat exchange device 30 is deformed and the heat exchange tube 310 in the heat exchange device 30 is disassembled and replaced, the abutting column 3432 can be pushed into the sealing sleeve 342 by screwing the nut 3433 and rotating on the sealing sleeve 342, so that the abutting curved plate 3431 is separated from the circumferential surface of the end of the heat exchange tube 310, and the heat exchange tube 310 can be drawn out from the communication hole 321. After the new heat exchange tube 310 penetrates into the communication hole 321, the nut 3433 is screwed again, so that the abutting curved plate 3431 can abut against the circumferential surface of the end part of the heat exchange tube 310, thereby ensuring that the axis between the heat exchange tube 310 and the communication hole 321 is collinear.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. A pre-heater before a tower, characterized in that: the heat pipe device comprises a machine body and a heat pipe device arranged in the machine body, wherein the heat pipe device comprises a heat exchange pipe arranged in the machine body, a fixing plate arranged at the end part of the heat exchange pipe and a sealing mechanism arranged at the joint of the heat exchange pipe and the fixing plate, the fixing plate is provided with a plurality of communication holes corresponding to the heat exchange pipe, the diameter of each communication hole is larger than that of the heat exchange pipe, the sealing mechanism comprises a sealing base fixedly arranged on the fixing plate, a sealing sleeve sleeved on the sealing base and a plurality of abutting components inserted on the sealing sleeve, each abutting component comprises a plurality of abutting curved plates uniformly arranged around the heat exchange pipe, abutting columns rotatably abutted to the abutting curved plates and screwed nuts sleeved on the abutting columns, and the abutting curved plates can be attached to the circumferential surfaces of the end parts of the heat exchange pipe, one end of the abutting column is rotatably inserted into the abutting bent plate, the other end of the abutting column penetrates through the sealing sleeve, the screwing nut is sleeved on the abutting column in a matching mode, and the screwing nut can abut against the outer wall of the sealing sleeve after rotating on the abutting column.
2. A pre-heater according to claim 1, wherein: the supporting bent plate is convexly provided with an accommodating cylinder, the accommodating cylinder is arranged along the radial direction of the heat exchange tube, and the supporting column is rotatably inserted into the accommodating cylinder in a penetrating mode.
3. A pre-heater according to claim 2, wherein: support and hold the post epirelief and be equipped with the limiting plate, the limiting plate can overlap joint extremely on the port of a holding section of thick bamboo, support and still cooperate the cover to be equipped with on holding the post and press and hold the sleeve, press and hold the sleeve with screw-thread fit's mode cover establish extremely on the holding section of thick bamboo, press and hold the sleeve cooperation it is right to hold a section of thick bamboo the limiting plate carries on spacingly.
4. A pre-heater according to claim 1, wherein: the sealed base epirelief is equipped with fixed boss, the sealing sleeve cover establish extremely on the fixed boss, the cover is equipped with the sealing ring on the fixed boss, the sealing ring laminating sets up fixed boss with between the sealing sleeve.
5. A pre-heater according to claim 1, wherein: the inner wall of the end part, far away from the fixed plate, of the sealing sleeve is convexly provided with a bearing ring, and the heat exchange tube is in lap joint with the sealing sleeve through the bearing ring.
6. A pre-heater according to claim 1, wherein: the fixed plate has two, and two fixed plates are established respectively the both sides of organism strip, the heat pipe device still includes the fixed square pole, fixed square pole fixed mounting is in two between the fixed plate.
7. A pre-heater according to claim 6, wherein: the pre-heater before the tower further comprises a plurality of baffle plates, the baffle plates are sequentially and uniformly arranged along the axial direction of the fixed-moment rod, and the heat exchange tubes penetrate through the fixed plate and the baffle plates.
8. A pre-heater according to claim 7, wherein: the baffle plates are provided with notches, and the notches on two adjacent baffle plates are arranged away from each other.
9. A pre-heater according to claim 7, wherein: the machine body is provided with a feeding pipe communicated to the feeding cavity, and the machine body is also provided with a discharging pipe communicated to the discharging cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922194686.3U CN211451970U (en) | 2019-12-09 | 2019-12-09 | Pre-heater before tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922194686.3U CN211451970U (en) | 2019-12-09 | 2019-12-09 | Pre-heater before tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211451970U true CN211451970U (en) | 2020-09-08 |
Family
ID=72302721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922194686.3U Active CN211451970U (en) | 2019-12-09 | 2019-12-09 | Pre-heater before tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211451970U (en) |
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2019
- 2019-12-09 CN CN201922194686.3U patent/CN211451970U/en active Active
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