CN111366015A - U-shaped tube heat exchanger with baffle plate provided with air bag structure - Google Patents
U-shaped tube heat exchanger with baffle plate provided with air bag structure Download PDFInfo
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- CN111366015A CN111366015A CN202010209767.0A CN202010209767A CN111366015A CN 111366015 A CN111366015 A CN 111366015A CN 202010209767 A CN202010209767 A CN 202010209767A CN 111366015 A CN111366015 A CN 111366015A
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- 238000003466 welding Methods 0.000 claims abstract description 36
- 238000005192 partition Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
- F28F9/10—Arrangements for sealing elements into header boxes or end plates by dismountable joints by screw-type connections, e.g. gland
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a U-shaped tube heat exchanger with a baffle plate provided with an air bag structure, which comprises a cylinder body, a shell flange gasket a, a shell flange gasket b, a shell flange a, a shell flange b, a tube plate assembly, an elliptical head a, an elliptical head b, a tube box cylinder body, a range division clapboard, a neck butt welding flange a, a neck butt welding flange b, a neck butt welding flange c, a neck butt welding flange d, a saddle support a, a saddle support b, an equal-length stud and a hexagon nut .
Description
Technical Field
The invention relates to the field of U-shaped tube heat exchangers, in particular to a U-shaped tube heat exchanger with a baffle plate provided with an air bag structure.
Background
In the world today, due to rapid development of economy and industry, countries in the world are generally facing the problem of energy shortage, and developing new energy and how to efficiently utilize existing energy are receiving general attention from countries in the world. The heat exchangers are various in types, but shell-and-tube heat exchange equipment occupies a leading position in chemical and petrochemical production, and particularly has the advantages in operation on occasions where media are corrosive or high in temperature. The shell-and-tube heat exchanger has the advantages of high safety and reliability, suitability for various occasions and the like, and is most widely applied to various industrial fields. For more than half a century, with the rapid development of modern industry and the continuous and deep development of new energy industry, the industrial fields and processes exhibit the characteristics of increasing density and strength, and higher requirements are put on the performance of heat exchangers, such as: the size is smaller, the structure compactness is higher, the heat transfer effect is better, the operation is more stable, and the service life is longer.
The U-shaped tube heat exchanger is widely applied to materials which are difficult to scale and have high temperature, high pressure and high corrosivity when the materials pass through the tube cleanly at present. The U-shaped tube heat exchanger has the structural characteristics that: there is only one tubesheet. A plurality of U-shaped tube bundles are regularly arranged to form a heat exchange tube bundle, two ends of all U-shaped heat exchange tubes are all arranged on one tube plate, and the heat exchange tubes can freely move, so that the influence of thermal stress on a heat exchanger does not need to be considered, and the thermal compensation capacity of the heat exchange tube bundle is very good. The U-shaped tubular heat exchanger has the advantages of simple manufacturing process, capability of bearing higher pressure and lower cost, is suitable for occasions with larger temperature difference between the wall and the shell wall of the heat exchange tube or easy scaling and needing cleaning of shell-side fluid, but is also suitable for occasions with other heat exchange equipment. However, due to the structure of the U-tube heat exchanger, the baffle plate is not fixed with the cylinder but is connected with the U-tube heat exchange tube, the tube plate, the pull rod spacing tube, the spacing tube and the like to form a whole, and the whole can be taken out of the cylinder during cleaning, so that a gap is inevitably formed between the baffle plate and the cylinder, and during the operation of the U-tube heat exchanger, vibration between the baffle plate and the cylinder is easily caused, which causes a fluid short circuit at the gap between the baffle plate and the cylinder, affects the heat exchange efficiency, and reduces the service life of the U-tube heat exchanger. Conventional baffles are either: this phenomenon is present for bow baffles, circular disc-ring baffles, rectangular baffles, or more recently helical baffles.
Disclosure of Invention
The invention aims to provide a U-shaped tube heat exchanger with a baffle plate provided with an air bag structure, which can effectively solve the vibration between a baffle plate and a cylinder in the operation of the U-shaped tube heat exchanger, avoid the problem of fluid short circuit at the gap between the baffle plate and the cylinder, realize the sealing at the gap between the cylinder and all the baffle plates and play a role in fixing the baffle plate, improve the heat exchange efficiency and prolong the service life of the U-shaped tube heat exchanger.
In order to solve the technical problems, the invention provides the following technical scheme:
a U-shaped tube heat exchanger with a baffle plate provided with an air bag structure comprises a cylinder body, a shell flange gasket a, a shell flange gasket b, a shell flange a, a shell flange b, a tube plate component, an elliptical head a, an elliptical head b, a tube box cylinder body, a split-range partition plate, a neck butt welding flange a, a neck butt welding flange b, a neck butt welding flange c, a neck butt welding flange d, a saddle support a, a saddle support b, equal-length double-end studs and a hexagon nut, wherein the tube plate component is arranged between the shell flange a and the shell flange b and is used by the equal-length double-end studs for connection of the hexagon nut, the elliptical head b, the tube box cylinder body and the shell flange b are fixedly connected, the shell flange a, the cylinder body and the elliptical head a are fixedly connected, an inlet at the first end of the tube box cylinder body is connected with the neck butt welding flange b, the outlet of the second end of the tube box cylinder is connected with the neck-equipped butt welding flange d, the inlet of the first end of the cylinder is connected with the neck-equipped butt welding flange a, the outlet of the second end of the cylinder is connected with the neck-equipped butt welding flange c, and the second end of the cylinder is connected with the saddle support a and the saddle support b;
the tube plate assembly consists of a tube plate, a baffle plate a, a baffle plate b, a baffle plate c, a baffle plate d, a connecting plug a, a connecting plug b, a connecting plug c, a connecting plug d, a connecting plug e, a connecting plug f, an air conduit a, an air conduit b, an air conduit c, an air conduit d, a U-shaped heat exchange tube, a distance tube, a pull rod and an air bag;
the U-shaped heat exchange tube and the pull rod penetrate through the tube plate, the baffle plate a, the baffle plate b, the baffle plate c and the baffle plate d, a groove corresponding to the split-range partition plate is formed in the first end face, close to the tube box cylinder, of the tube plate, the tube end of the U-shaped heat exchange tube penetrates through and is fixed in a tube hole of the tube plate, a threaded hole is formed in the second end face of the tube plate, and the pull rod is connected with the tube plate through the threaded hole; a first preset hole is formed in one end, close to the neck-equipped butt welding flange b, of the tube plate, a second preset hole is formed in one end, close to the neck-equipped butt welding flange d, of the tube plate, the first end of the air conduit a and the first end of the air conduit c penetrate through the first preset hole and extend out of the second preset hole respectively, and the extending portion is used for being connected with an air pump or a vacuum pump to inflate or exhaust the air bag;
the air conduit a is connected with the tube plate and the baffle plate a, the air conduit b is connected with the baffle plate a and the baffle plate c, the air conduit c is connected with the tube plate and the baffle plate b, and the air conduit d is connected with the baffle plate b and the baffle plate d; a first preset through hole is formed in the baffle plate a, and the second end of the air conduit a is connected with the first preset through hole through a connecting plug a; the first end of the air conduit b is connected with the first preset through hole through a connecting plug b, a first preset blind hole is formed in the baffle plate c, and the second end of the air conduit b is connected with the first preset blind hole through a connecting plug e; a second preset through hole is formed in the baffle plate b, and the second end of the air duct c is connected with the second preset through hole through a connecting plug c; the first end of the air conduit d is connected with the second preset through hole through a connecting plug d, a second preset blind hole is formed in the baffle plate d, and the second end of the air conduit d is connected with the second preset blind hole through a connecting plug f;
the first end of the pull rod is fixedly connected with the baffle plate d through a hexagonal thick nut, the second end of the pull rod is connected with the tube plate, the distance tube is sleeved outside the pull rod, the baffle plate a, the baffle plate b and the baffle plate c are positioned in the U-shaped tube heat exchanger through the distance tube and the pull rod,
the air bag comprises an air bag main body and an air bag nozzle, the air bag main body is fixedly coated on the end face of the outer edge of the baffle plate, the air bag nozzle is connected with an air guide hole formed in the baffle plate, a first air guide hole formed in the baffle plate a is connected with the first preset through hole, a second air guide hole formed in the baffle plate b is connected with the second preset through hole, a third air guide hole formed in the baffle plate c is connected with the first preset blind hole, and a fourth air guide hole formed in the baffle plate d is connected with the second preset blind hole.
Preferably, the air bag is mounted on the baffle plate a, the baffle plate b, the baffle plate c and the baffle plate d, and then the function of the vent hole or the liquid through hole is not affected.
Preferably, the baffle is any one of an arch baffle, a disc-ring baffle, a rectangular baffle and a spiral baffle.
Preferably, the connecting plug is in interference fit with the air conduit and the baffle plate, and the air bag nozzle is in interference fit with the air vent.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can effectively solve the vibration generated by the clearance between the baffle plate and the barrel due to the self structure of the U-shaped tube heat exchanger, eliminate the problem of fluid short circuit at the clearance between the baffle plate and the barrel, fix the position of the baffle plate in the barrel, improve the heat exchange efficiency and the energy utilization rate, prolong the service life of the baffle plate and further improve the service life of the U-shaped tube heat exchanger.
2. The invention has the advantages of simple structure, convenient manufacture, high reliability, low manufacturing cost, convenient assembly and disassembly, and very strong shock resistance and buffering functions, thereby having great popularization prospect and social requirements.
Drawings
FIG. 1 is a schematic view of the overall structure of a U-tube heat exchanger with an air bag structure on baffles;
FIG. 2 is a schematic structural view of a tube sheet assembly in an embodiment of the present invention;
FIG. 3 is a right side view of FIG. 1;
FIG. 4 is a cross-sectional view taken along plane A-A of FIG. 3;
FIG. 5 is a partial enlarged view of the portion B in FIG. 4;
FIG. 6 is a partial enlarged view of the airbag at the baffle a in the inflated state;
FIG. 7 is an enlarged view of a portion of the bladder at the deflector c in the inflated condition;
FIG. 8 is a partial enlarged view of the bladder at baffle a in a vacuum state; and
FIG. 9 is a partial enlarged view of the bladder at baffle c in the evacuated state;
in the figure:
1. a barrel; 2. a housing flange gasket a; 3. a housing flange gasket b; 4. a housing flange a; 5. a housing flange b; 6. a tube sheet assembly; 7. an elliptical head a; 8. an elliptical seal head b; 9. a tube box cylinder; 10. a split-range partition plate; 11. a neck butt welding flange a; 12. a neck butt welding flange b; 13. a neck butt welding flange c; 14. a neck butt welding flange d; 15. a saddle type support a; 16. a saddle support b; 17. equal-length stud bolts; 18. a hexagonal nut; 601, a tube plate; 602. a baffle plate a; 603. a baffle plate b; 604. a baffle plate c; 605. a baffle plate d; 606. a connecting plug a; 607 connecting plug b; 608. a connecting plug c; 609. a connecting plug d; 610. a connecting plug e; 611. a connecting plug f; 612. an air duct a; 613. an air duct b; 614. an air duct c; 615. an air duct d; 616. U-shaped heat exchange tube; 617. a distance tube; 618. a pull rod; 619. an air bag; 619-1, the air bag is in a vacuum state; 619-2. the inflated state of the air bag.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in fig. 1 to 9, in this embodiment, the baffle plate is a single-arch baffle plate, and a U-tube heat exchanger with a baffle plate having an airbag structure includes a tube body 1, a shell flange gasket a 2, a shell flange gasket b 3, a shell flange a 4, a shell flange b5, a tube plate assembly 6, an elliptical head a 7, an elliptical head b 8, a tube box body 9, a split-range partition plate 10, a neck-butt welding flange a 11, a neck-butt welding flange b12, a neck-butt welding flange c 13, a neck-butt welding flange d 14, a saddle support a15, a saddle support b16, an equal-length stud 17, and a hexagon nut 18, where the tube plate assembly 6 includes a tube plate 601, a baffle plate a602, a baffle plate b603, a baffle plate c604, a baffle plate d605, a connection plug a 606, a connection plug b 607, a connection plug c 608, a connection plug d 609, the air bag 619 comprises a connecting plug e610, a connecting plug f 611, an air conduit a612, an air conduit b613, an air conduit c614, an air conduit d615, a U-shaped heat exchange tube 616, a distance tube 617, a pull rod 618 and an air bag 619, wherein the air bag 619 can be divided into two states, namely a vacuumizing state 619-1 and an inflating state 619-2.
The shell flange b5, the shell flange gasket b 3, the tube plate assembly 6, the shell flange gasket a 2 and the shell flange a 4 are connected through equal-length double-end studs 17 by using hexagon nuts 18, the oval head b 8 and the tube box cylinder 9 are connected with the shell flange b5, the shell flange a 4, the cylinder 1 and the oval head a 7 are fixedly connected, the neck butt welding flange b12 is connected at the inlet of the first end of the tube box cylinder 9, the neck butt welding flange d 14 is connected at the outlet of the second end of the tube box cylinder 9, the neck butt welding flange a 11 is connected at the inlet of the first end of the cylinder 1, the neck butt welding flange c 13 is connected at the outlet of the second end of the cylinder 1, and the saddle support a15 and the saddle support b16 are further connected at the second end of the.
The U-shaped heat exchange tube 616 and a pull rod 618 penetrate through the tube plate 601, the baffle plate a602, the baffle plate b603, the baffle plate c604 and the baffle plate d605 together, the tube plate 601 is provided with a groove corresponding to the partition plate 10 on the first end surface close to the tube box body 9, the elliptical head b 8, the groove and the partition plate 10 are fixed together, the air conduit a612 and the air conduit c614 penetrate through the tube plate and extend out of the tube plate, the air conduit a612 is connected with the tube plate 601 and the baffle plate a602 together, the air conduit b613 is connected with the baffle plate a602 and the baffle plate c604 together, the air conduit c614 is connected with the tube plate 601 and the baffle plate b603 together, and the air conduit d615 is connected with the baffle plate b603 and.
The tube end of the U-shaped heat exchange tube 616 penetrates through and is fixed in the tube hole of the tube plate 601, the depth of the tube end of the U-shaped heat exchange tube 616 penetrating into the tube hole is the same as the thickness of the tube plate, and the U-shaped heat exchange tube 616 is fixed with the tube plate 601; a threaded hole is formed in the second end face of the tube plate 601, and the pull rod 618 is in threaded connection with the tube plate 601 through the threaded hole; the top and the bottom of the tube plate 601 are respectively provided with a first preset hole and a second preset hole, the first end of the air conduit a612 and the first end of the air conduit c614 respectively penetrate through the first preset hole and the second preset hole and extend out for a certain distance, and the sections of the conduits of the air conduit a612 and the air conduit c614 extending out of the tube plate can be respectively connected out from the upper end and the lower end of the tube box cylinder 9, so that an air pump or a vacuum pump can conveniently inflate or deflate the air bag 619.
The second end of the air duct a612 is connected with a first preset through hole which is specially arranged for the connecting plug a 606 and the connecting plug b 607 on the baffle plate a602, and the connecting plug a 606; the first end of the air duct b613 is connected with a first preset through hole and a connecting plug b 607 on the baffle plate a, and the second end of the air duct b613 is connected with a first preset blind hole and a connecting plug e610 which are specially arranged for the connecting plug e610 on the baffle plate c 604; the second end of the air duct c614 is connected with a second preset through hole which is arranged on the baffle plate b603 and is specially used for a connecting plug c 608 and a connecting plug d 609, and the connecting plug c 608; the first end of the air conduit d615 is connected with a second preset through hole and a connecting plug d 609 on the baffle plate b603, and the second end of the air conduit d615 is connected with a second preset blind hole and a connecting plug f 611 which are specially arranged for the connecting plug f 611 on the baffle plate d 605.
The tube body of the U-shaped heat exchange tube 616 passes through the preformed holes specially arranged for the U-shaped heat exchange tube on the baffle plate a602, the baffle plate b603, the baffle plate c604 and the baffle plate d605, the distance tube 617 is sleeved outside the pull rod 618, and the baffle plate a602, the baffle plate b603 and the baffle plate c604 are positioned in the U-shaped tube heat exchanger through the distance tube 617 and the pull rod 618. The baffle d605 is fixed by the distance tube 617, the pull rod 618 and the hexagonal thick nut.
The air bag 619 comprises an air bag main body and air bag nozzles, the air bag is respectively arranged on the baffle plate a602, the baffle plate b603, the baffle plate c 603 and the baffle plate d 604, the four air bag main bodies are fixed with the end faces of the arc sections of the baffle plate a602, the baffle plate b603, the baffle plate c 603 and the baffle plate d 604 and the surrounding areas, the four air bag nozzles are respectively connected with a first air guide hole, a second air guide hole, a third air guide hole and a fourth air guide hole which are arranged on the arc end faces of the baffle plate a602, the baffle plate b603, the baffle plate c604 and the baffle plate d605, the first air guide hole and the first preset through hole which are arranged on the baffle plate a are in a vertical relation and are intersected, the second air guide hole and the second preset through hole which are arranged on the baffle plate b are in a vertical relation and are intersected, the smoothness of the first preset through hole and the smoothness of the second preset through hole are not influenced at the intersection, and the phenomenon that airflow flows in the first preset through hole and the second preset through hole like orifices is avoided; the third air guide hole arranged on the baffle plate c is vertical to and intersected with the first preset blind hole, the fourth air guide hole arranged on the baffle plate d is vertical to and intersected with the second preset blind hole, and the intersected position is processed by a fillet, so that smooth transition of the first preset blind hole and the second preset blind hole is realized, and efficient flow of gas is facilitated.
The first air guide hole, the second air guide hole, the third air guide hole and the fourth air guide hole which are arranged on the baffle plate a602, the baffle plate b603, the baffle plate c604 and the baffle plate d605 are positioned at the center positions of the top end faces of the liquid through openings or the air through openings on the baffle plate a602, the baffle plate b603, the baffle plate c604 and the baffle plate d605 so as to ensure the stability of the air guide holes and the strength, the rigidity and the stability of the baffle plate.
After the air bags are arranged on the baffle plate a, the baffle plate b, the baffle plate c and the baffle plate d, the function of the vent hole or the liquid through hole is not influenced.
The connecting plug is in interference fit with the air conduit and the baffle plate, and the air bag nozzle is in interference fit with the air guide hole, so that the sealing performance of the integral structure of the air bag is ensured.
The air duct a, the air duct b, the air duct c and the air duct d can be made of soft materials, and the influence on the overall performance of the U-shaped tube heat exchanger is reduced as much as possible.
Before U type heat exchanger installation tube sheet subassembly or wash tube sheet subassembly, air conduit a and air conduit c stretch out one section pipe end of tube sheet and give the gasbag evacuation through connecting the vacuum pump, make the gasbag change into the evacuation state, increase the baffling board after the installation gasbag and the clearance between the barrel, frictional force when reducing the tube sheet subassembly and removing in the barrel makes things convenient for the tube sheet subassembly smoothly, install in U type heat exchanger fast or take out the tube sheet subassembly from U type heat exchanger.
After the U-shaped tube heat exchanger is provided with the tube plate assembly or after the tube plate assembly is cleaned and is arranged in the U-shaped tube heat exchanger and in the use process of the U-shaped tube heat exchanger, the tail end of a section of the air conduit a and the tail end of a section of the air conduit c extending out of the tube plate inflate the air bag through a connecting air pump, so that the air bag is changed into an inflated state, the gap between the baffle plate and the barrel after the air bag is arranged is greatly reduced, the friction force between the baffle plate with the air bag structure and the barrel is increased, and the air bag in the inflated state can realize the sealing of the barrel and all.
As shown in fig. 1 to fig. 9, the method for using the U-tube heat exchanger with baffle plate having air bag structure of the present invention is as follows:
when the U-shaped tube heat exchanger is provided with the tube plate component, all the parts of the tube plate component are connected according to the connection method, a section of the tube extending out of the tube plate respectively through the air conduit a and the air conduit c is connected with a vacuum pump, after the vacuum pump works, air is extracted from the air bags arranged on the baffle plate a, the baffle plate b, the baffle plate c and the baffle plate d, the air in the air bag on the baffle plate c flows into the air conduit b through the third air guide hole and the first preset blind hole and then flows into the air conduit a through the first preset through hole, the air in the air bag on the baffle plate a flows into the air conduit a through the first air guide hole and the first preset through hole, the air in the air bag on the baffle plate d flows into the air conduit d through the fourth air guide hole and the second preset blind hole and then flows into the air conduit c through the second preset through hole, and the air in the air bag on the baffle, finally, discharging air in the air bag into the atmosphere through a vacuum pump, maintaining the vacuum state of the whole structure of the air bag after vacuumizing the air bag structure on the deflector, then connecting all the components except the tube plate assembly according to the connecting method, carefully and stably placing the tube plate assembly into the barrel, removing the vacuum state of the air bag, then connecting an air pump through a section of pipe extending out of the tube plate respectively from the air pipe a and the air pipe c, filling air into the air bag arranged on the deflector plate a, the deflector plate b, the deflector plate c and the deflector plate d after the air pump works, filling a part of the air entering the air pipe a into the air bag on the deflector plate a through a first preset through hole and a first air guide hole, and filling a part of the air entering the air pipe b into the air bag on the deflector plate c through a first preset blind hole and a third air guide hole; after the air enters the air conduit c, a part of the air flows into the air bag on the baffle plate b through the second preset through hole and the second air guide hole, and a part of the air flows to the air conduit d and is filled into the air bag on the baffle plate d through the second preset blind hole and the fourth air guide hole, the air bag structure on the baffle plate is inflated, the inflation state of the whole air bag structure is kept, the gap between the baffle plate and the barrel after the air bag is installed is greatly reduced, and the air bag in the inflation state can realize the sealing of the gap between the barrel and the baffle plate and play a role in fixing the baffle plate.
When the U-shaped pipe heat exchanger is used for cleaning the pipe plate assembly, the U-shaped pipe heat exchanger is firstly disassembled to expose the pipe plate assembly, a section of the conduit extending out of the tube plate through the air conduit a and the air conduit c is connected with a vacuum pump, vacuumizing the air bag structure on the convection plate and keeping the vacuum state of the air bag structure, then extracting the tube plate assembly from the cylinder body, cleaning each part of the tube plate assembly, carefully and stably placing the tube plate assembly into the cylinder after cleaning, removing the vacuum state of the air bag structure, connecting an air pump through a section of guide tube extending out of the tube plate respectively through an air guide tube a and an air guide tube c, the air bag structure on the folded flow plate is inflated and the inflation state of the air bag structure is kept, the gap between the baffle plate and the barrel body after the air bag is installed is greatly reduced, and the inflated air bag can seal the gap between the barrel body and the baffle plate and has the effect of fixing the baffle plate.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.
Claims (4)
1. A U-shaped tube heat exchanger with a baffle plate provided with an air bag structure is characterized by comprising a cylinder body (1), a shell flange gasket a (2), a shell flange gasket b (3), a shell flange a (4), a shell flange b (5), a tube plate component (6), an elliptical head a (7), an elliptical head b (8), a tube box cylinder body (9), a range partition plate (10), a neck butt welding flange a (11), a neck butt welding flange b (12), a neck butt welding flange c (13), a neck butt welding flange d (14), a saddle type support a (15), a saddle type support b (16), an isometric stud (17) and a hexagon nut (18), wherein the tube plate component (6) is arranged between the shell flange a (4) and the shell flange b (5) and is connected through the isometric stud (17) by using the hexagon nut (18), the elliptical seal head b (8), the tube box cylinder body (9) and the shell flange b (5) are fixedly connected, the shell flange a (4), the cylinder body (1) and the elliptical seal head a (7) are fixedly connected, an inlet of a first end of the tube box cylinder body (9) is connected with the neck butt welding flange b (12), an outlet of a second end of the tube box cylinder body (9) is connected with the neck butt welding flange d (14), an inlet of a first end of the cylinder body (1) is connected with the neck butt welding flange a (11), an outlet of a second end of the cylinder body is connected with the neck butt welding flange c (13), and a second end of the cylinder body (1) is connected with the saddle support a (15) and the saddle support b (16);
the tube plate assembly (6) consists of a tube plate (601), a baffle plate a (602), a baffle plate b (603), a baffle plate c (604), a baffle plate d (605), a connecting plug a (606), a connecting plug b (607), a connecting plug c (608), a connecting plug d (609), a connecting plug e (610), a connecting plug f (611), an air conduit a (612), an air conduit b (613), an air conduit c (614), an air conduit d (615), a U-shaped heat exchange tube (616), a distance tube (617), a pull rod (618) and an air bag (619);
the U-shaped heat exchange tube (616) and the pull rod (618) penetrate through the tube plate (601), the baffle plate a (602), the baffle plate b (603), the baffle plate c (604) and the baffle plate d (605), a groove corresponding to the split partition plate (10) is formed in the first end face, close to the tube box cylinder (9), of the tube plate (601), the tube end of the U-shaped heat exchange tube (616) penetrates through and is fixed in the tube hole of the tube plate (601), a threaded hole is formed in the second end face of the tube plate (601), and the pull rod (618) is connected with the tube plate (601) through the threaded hole; a first preset hole is formed in one end, close to the neck-equipped welding flange b (12), of the tube plate (601), a second preset hole is formed in one end, close to the neck-equipped welding flange d (14), of the tube plate (601), the first end of the air conduit a (612) and the first end of the air conduit c (614) penetrate through the first preset hole and extend out of the second preset hole respectively, and the extending parts are used for being connected with an air pump and a vacuum pump to inflate and deflate the air bag (619);
the air conduit a (612) is connected with the tube plate (601) and the baffle plate a (602), the air conduit b (613) is connected with the baffle plate a (602) and the baffle plate c (604), the air conduit c (614) is connected with the tube plate (601) and the baffle plate b (603), and the air conduit d (615) is connected with the baffle plate b (603) and the baffle plate d (605); a first preset through hole is formed in the baffle plate a (602), the second end of the air conduit a (612) is connected with the first preset through hole through a connecting plug a (606), the first end of the air conduit b (613) is connected with the first preset through hole through a connecting plug b (607), a first preset blind hole is formed in the baffle plate c (604), and the second end of the air conduit b (613) is connected with the first preset blind hole through a connecting plug e (610); a second preset through hole is formed in the baffle plate b (603), the second end of the air conduit c (614) is connected with the second preset through hole through a connecting plug c (608), the first end of the air conduit d (615) is connected with the second preset through hole through a connecting plug d (609), a second preset blind hole is formed in the baffle plate d (605), and the second end of the air conduit d (615) is connected with the second preset blind hole through a connecting plug f (611);
the first end of the pull rod (618) is fixedly connected with the baffle plate d (605) through a hexagonal thick nut, the second end of the pull rod (618) is connected with the tube plate (601), the distance tube (617) is sleeved outside the pull rod (618), and the baffle plate a (602), the baffle plate b (603) and the baffle plate c (604) are positioned in the U-shaped tube heat exchanger through the distance tube (617) and the pull rod (618);
the air bag (619) comprises an air bag main body and an air bag nozzle, the air bag main body is fixed on the end face of the outer edge of the baffle plate in a wrapping mode, the air bag nozzle is connected with an air guide hole formed in the baffle plate, a first air guide hole formed in the baffle plate a (602) is connected with the first preset through hole, a second air guide hole formed in the baffle plate b (603) is connected with the second preset through hole, a third air guide hole formed in the baffle plate c (604) is connected with the first preset blind hole, and a fourth air guide hole formed in the baffle plate d (605) is connected with the second preset blind hole.
2. The U-tube heat exchanger with baffle plate having an air bag structure according to claim 1, wherein the air bag is mounted on the baffle plate a (602), the baffle plate b (603), the baffle plate c (604), and the baffle plate d (605) without affecting the function of the vent hole or the liquid through hole.
3. The U-tube heat exchanger with baffle having an air bag structure as claimed in claim 2, wherein the baffle is any one of an arcuate baffle, a disc-ring baffle, a rectangular baffle and a spiral baffle.
4. The U-tube heat exchanger with a baffle plate having an air bag structure as claimed in claim 1, wherein the connecting plug is in interference fit with the air conduit and the baffle plate, and the air bag nozzle is in interference fit with the air vent.
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| CN202010209767.0A CN111366015B (en) | 2020-03-23 | 2020-03-23 | U-shaped tube heat exchanger with baffle plate provided with air bag structure |
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| CN111998718A (en) * | 2020-09-10 | 2020-11-27 | 张春丽 | Double-tube plate sealing device of heat exchanger |
| CN114459262A (en) * | 2022-02-21 | 2022-05-10 | 江阴金童石化装备有限公司 | Single-flow wound tube type heat exchanger |
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| CN114459262B (en) * | 2022-02-21 | 2023-08-22 | 江阴金童石化装备有限公司 | Single-flow coiled pipe type heat exchanger |
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|---|---|
| CN111366015B (en) | 2021-03-02 |
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