CN213120184U

CN213120184U - Detachable tube bundle type U-shaped tube heat exchanger

Info

Publication number: CN213120184U
Application number: CN202021926321.1U
Authority: CN
Inventors: 丁仁伟; 严加官; 周敏杰
Original assignee: Wuxi Nanda Special Petrochemical Equipment Accessories Co ltd
Current assignee: Wuxi Nanda Special Petrochemical Equipment Accessories Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-05-04
Anticipated expiration: 2030-09-04

Abstract

The application relates to a detachable tube bundle type U-shaped tube heat exchanger, which comprises a shell pass cylinder, a tube plate, a plurality of U-shaped tubes and connecting tubes; the tube plate is fixed at one end of the shell pass cylinder, and the other end of the shell pass cylinder is a closed end; the tube plate is provided with a plurality of tube holes which are in one-to-one correspondence with the end parts of the U-shaped tubes; the connecting pipe is detachably connected to the pipe hole; the U-shaped pipe is detachably arranged in the connecting pipe; the U-shaped pipe is positioned on one side of the pipe plate close to the shell pass cylinder. This application has the effect that improves U-shaped pipe heat exchanger's life.

Description

Detachable tube bundle type U-shaped tube heat exchanger

Technical Field

The application relates to the field of heat exchange equipment, in particular to a detachable tube bundle type U-shaped tube heat exchanger.

Background

Heat exchangers, also known as heat exchangers, are devices that transfer part of the heat of a hot fluid to a cold fluid. The heat exchanger is a common device in chemical industry, petroleum industry, power industry, food industry and other industry departments, plays an important role in production, and can be used for heating media and cooling media.

The U-shaped tube heat exchanger is one of shell-and-tube heat exchangers, the U-shaped tube heat exchanger is only provided with one tube plate, two ends of each U-shaped tube are fixed on the same tube plate, and a tube bundle formed by combining a plurality of U-shaped tubes can be drawn out from a shell of the heat exchanger, so that the U-shaped tube heat exchanger is convenient to overhaul and clean. However, the U-shaped pipe is limited by the bending radius of the U-shaped pipe, the connection mode of the U-shaped pipe and the pipe plate is any one of expansion joint, welding or expansion joint and welding, when the U-shaped pipe is leaked and damaged, the U-shaped pipe at the periphery of the pipe bundle is convenient to replace, the inner layer U-shaped pipe is damaged and cannot be replaced, only the U-shaped pipe can be blocked, and the service life of the U-shaped pipe heat exchanger is greatly shortened.

SUMMERY OF THE UTILITY MODEL

In order to improve U-shaped pipe heat exchanger's life, this application provides a can dismantle tube bundle formula U-shaped pipe heat exchanger.

The application provides a can dismantle tube bundle formula U-shaped tube heat exchanger adopts following technical scheme:

a detachable tube bundle type U-shaped tube heat exchanger comprises a shell pass cylinder, a tube plate, a plurality of U-shaped tubes and connecting tubes; the tube plate is fixed at one end of the shell pass cylinder, and the other end of the shell pass cylinder is a closed end; the tube plate is provided with a plurality of tube holes which are in one-to-one correspondence with the end parts of the U-shaped tubes; the connecting pipe is detachably connected to the pipe hole; the U-shaped pipe is detachably arranged in the connecting pipe; the U-shaped pipe is positioned on one side of the pipe plate close to the shell pass cylinder.

Through adopting above-mentioned technical scheme, compare in the connected mode of traditional tube sheet and U-shaped pipe, break away from the connecting pipe with being connected of tube sheet, just can break away from the U-shaped pipe with being connected of tube sheet, the U-shaped pipe of convenient renewal, if the U-shaped pipe of leaking is located the inlayer of the tube bank that many U-shaped pipe combinations formed, can lift off the U-shaped pipe near the U-shaped pipe of leaking, and then demolish the U-shaped pipe of renewal with the U-shaped pipe of leaking, pass through the connected mode of connecting pipe based on U-shaped pipe and tube sheet, need not to block up the U-shaped pipe of leaking, improve the life of U-shaped pipe heat exchanger on the one hand, the mouth of pipe of the U-shaped pipe of this connected mode of on.

Preferably, the connecting pipe is in threaded connection with the pipe hole; the connecting pipe is also in threaded connection with the U-shaped pipe.

Through adopting above-mentioned technical scheme, threaded connection's mode, on the one hand be convenient for process realize the connecting pipe with the U-shaped pipe firmly be fixed in the tube sheet, on the other hand in the rotating connecting pipe, the connecting pipe can break away from the pipe hole simultaneously and be connected with the U-shaped pipe, improves and dismantles efficiency.

Preferably, an abutting portion is fixed to a peripheral side of the connection pipe; after the connecting pipe is screwed down on the U-shaped pipe, the abutting part abuts against one side, far away from the U-shaped pipe, of the pipe plate.

By adopting the technical scheme, due to the introduction of the abutting part, one end of the connecting pipe protrudes out of the pipe plate, so that the connecting pipe can be conveniently screwed into the pipe hole and screwed out during subsequent maintenance.

Preferably, the projection of the abutment along the axis of the connecting tube is hexagonal.

Through adopting above-mentioned technical scheme, hexagonal butt portion can be outside the connecting pipe screw-in pipe hole and follow-up connecting pipe back-out pipe hole when overhauing, chooses for use appurtenance such as current hexagonal spanner to be connected connecting pipe and pipe hole.

Preferably, a guide plate is fixed on one side of the tube plate facing the shell-side cylinder; the guide plate is positioned between the straight pipe sections of the U-shaped pipe.

By adopting the technical scheme, the guide plate is introduced, so that a high-temperature area and a low-temperature area formed by heat exchange between the medium flowing in the U-shaped pipe and the heat exchange medium flowing into the shell side cylinder are separated, the heat exchange effect of the heat exchanger is improved, and the guide plate can guide the heat exchange medium in the shell side cylinder to flow along the appointed direction.

Preferably, a plurality of baffle plates are respectively arranged on two sides of the guide plate facing the straight pipe section of the U-shaped pipe; two ends of the U-shaped pipe penetrate through the baffle plate and are connected with the pipe plate.

Through adopting above-mentioned technical scheme, the introduction of baffling board improves the heat transfer effect of the heat transfer medium in the shell pass barrel on the one hand, and on the other hand plays the supporting role of U-shaped pipe.

Preferably, the two sides of the guide plate facing the straight U-shaped pipe are respectively connected with a plurality of clamping blocks through bolts, and the baffle plate is clamped on the guide plate through the clamping blocks.

By adopting the technical scheme, when the follow-up maintenance is carried out, the clamping blocks connected by the bolts are loosened, the clamping blocks are taken down from the guide plate, the guide plate is moved to slide along the axis of the straight pipe section of the U-shaped pipe, so that the dirt attached to the outer side of the U-shaped pipe can be scraped, and the heat exchange effect between the U-shaped pipe and the heat exchange medium flowing into the shell side cylinder is kept.

Preferably, the baffle plate is divided into a first baffle plate and a second baffle plate; the projection of the peripheral side of the first baffle along the axis of the shell pass cylinder is a semicircular arc edge, and an arch structure with a notch is arranged on the arc edge; the projection of the second baffle plate along the axis of the shell pass cylinder body is of a semicircular structure; the first baffle and the second baffle are alternately distributed on the guide plate along the axis of the shell pass cylinder.

Through adopting above-mentioned technical scheme, the structure of first baffle and second baffle on the one hand can supply most U-shaped pipes to pass, supports many U-shaped pipes, and on the other hand keeps the baffling board to improve shell side barrel internal heat transfer medium's heat transfer effect.

Preferably, a flange I is fixed at one end of the shell-side cylinder body facing the tube plate; a flange II is fixed on one side of the tube plate facing the shell pass cylinder; the flange I and the flange II are connected with each other through a fastening piece.

Through adopting above-mentioned technical scheme, demolish the fastener, flange I and II disconnections of flange make things convenient for follow-up inner wall to the shell side barrel to wash and the maintenance of U-shaped pipe.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the U-shaped pipe is connected with the pipe plate through the connecting pipe, so that the U-shaped pipe is convenient to detach from the pipe plate compared with the traditional mode of directly fixing the U-shaped pipe and the pipe plate, and the subsequent U-shaped pipe is convenient to replace;

2. through the guide plate, on one hand, the heat transfer effect of the heat exchange medium in the shell pass cylinder is improved, on the other hand, the clamping blocks are loosened, the movable baffle plate slides along the axis of the straight pipe section of the U-shaped pipe, so that dirt attached to the outer side of the U-shaped pipe can be scraped, and the heat exchange effect between the U-shaped pipe and the heat exchange medium flowing into the shell pass cylinder is kept;

3. through flange I, flange II and fastener, the heat exchanger is convenient for follow-up dismantlement, washs the inner wall of shell journey barrel and the maintenance of U-shaped pipe.

Drawings

Fig. 1 is an assembly view of the overall structure of the embodiment of the present application.

Fig. 2 is an enlarged view of a portion a of fig. 1.

Fig. 3 is a schematic structural diagram of a baffle according to an embodiment of the present application.

Description of reference numerals: 1. a shell-side cylinder; 11. a flange I; 12. a heat exchange medium inlet; 13. a heat exchange medium outlet; 2. a tube sheet; 21. a tube hole; 22. a flange II; 3. a U-shaped tube; 4. a connecting pipe; 41. an abutting portion; 5. sealing the end; 51. a flange III; 52. a partition plate; 53. a media inlet; 54. a media outlet; 6. a fastener; 7. a baffle; 8. a baffle plate; 81. a first baffle plate; 82. a second baffle; 9. and (5) clamping blocks.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses can dismantle tube bundle formula U-shaped pipe heat exchanger. Referring to fig. 1, the detachable tube bundle type U-shaped tube 3 heat exchanger includes a shell side cylinder 1, a tube plate 2, a plurality of U-shaped tubes 3, a connecting tube 4 and a head 5, wherein the shell side cylinder 1 and the head 5 are respectively bolted to two sides of the tube plate 2. The tube plate 2 is provided with a plurality of tube holes 21 which correspond to the ends of the U-shaped tubes 3 one by one. The connecting pipe 4 is in threaded connection with the pipe hole 21, the connecting pipe 4 is also in threaded connection with the U-shaped pipe 3, and the U-shaped pipe 3 is located on one side of the pipe plate 2 close to the shell-side cylinder 1. After the bolts fastened on the end socket 5, the tube plate 2 and the shell pass cylinder 1 are loosened, the tube plate 2 is pulled, the U-shaped tubes 3 are drawn out from the inner cavity of the shell pass cylinder 1, the connecting tube 4 is rotated, the connecting tube 4 can be separated from the connection between the tube hole 21 and the U-shaped tubes 3, and the U-shaped tubes 3 can be separated from the connection with the tube plate 2.

Referring to fig. 1 and 2, a flange i 11 is welded at one end of the shell-side cylinder 1, and the other end of the shell-side cylinder 1 is a closed end. Flanges II 22 are welded on one side of the tube plate 2 facing the shell pass cylinder 1 and one side of the end enclosure 5, and a flange III 51 is welded on the end face of the end enclosure 5 facing the tube plate 2. The flange I11, the flange II 22 and the flange III 51 are locked through fasteners 6, and the fasteners 6 are preferably stud bolts. The periphery of the shell side cylinder body 1 is provided with a heat exchange medium inlet 12 and a heat exchange medium outlet 13, and the heat exchange medium inlet 12 and the heat exchange medium outlet 13 are symmetrically arranged by taking the axis of the shell side cylinder body 1 as a symmetry line. The inner side wall of the seal head 5 is welded with a partition plate 52, the partition plate 52 divides the cavity between the seal head 5 and the tube plate 2 into a medium inlet 53 and a medium outlet 54, and the two cavities are not communicated with each other. The medium inlet 53 and the medium outlet 54 are both communicated with the outer side of the seal head 5.

Referring to fig. 1 and 2, an abutting portion 41 is welded to the circumferential side of the connection pipe 4, and a projection of the abutting portion 41 along the axis of the connection pipe 4 is hexagonal. After the connection tube 4 is screwed to the hairpin tube 3, the contact portion 41 comes into contact with the tube plate 2 on the side away from the hairpin tube 3. The hexagonal abutment 41 facilitates the connection of the connection pipe 4 to the pipe hole 21 and the subsequent removal of the connection pipe 4 by an existing auxiliary tool such as a hexagonal wrench, an allen wrench, or the like.

Referring to fig. 1 and 2, a plurality of U-shaped tubes 3 are connected in parallel to one side of a tube plate 2 close to a shell-side cylinder 1. The mouth of the U-shaped tube 3 at one end faces the chamber of the medium inlet 53 and at the other end faces the chamber of the medium outlet 54. The medium to be cooled flows into the U-shaped tube 3 through the medium inlet 53, meanwhile, the heat exchange medium flows into the heat exchange medium inlet 12, and after the heat exchange medium exchanges heat with the side wall of the U-shaped tube 3, the temperature of the medium to be cooled flowing out of the medium outlet 54 is reduced, so that the heat exchange effect of the heat exchanger is achieved.

Referring to fig. 1, a flow deflector 7 is welded on one side of the tube plate 2 facing the shell side cylinder 1, the center line of the flow deflector 7 is vertical to the center line of the tube plate 2, and the flow deflector 7 is positioned between the straight tube sections of the U-shaped tube 3. The two sides of the guide plate 7 facing the straight pipe section of the U-shaped pipe 3 are respectively provided with a plurality of baffle plates 8, the side walls of the baffle plates 8 abut against the inner side wall of the shell side barrel 1, the two ends of the U-shaped pipe 3 penetrate through the baffle plates 8 to be connected with the pipe plate 2, and the U-shaped pipe 3 is supported on the two sides of the guide plate 7 through the baffle plates 8. The guide plate 7 separates the high-temperature area and the low-temperature area formed by the heat exchange between the medium flowing in the U-shaped pipe 3 and the heat exchange medium flowing in the shell side cylinder 1.

Referring to fig. 3, the two sides of the flow guide plate 7 facing the straight tube section of the hairpin tube 3 are respectively bolted with a plurality of clamping blocks 9. The baffle plate 8 is clamped on the guide plate 7 by the clamping blocks 9, and the axial displacement of the baffle plate 8 is limited. Loosening the clamping block 9 connected by the bolt, taking the clamping block 9 off the guide plate 7, moving the guide plate 7 to slide along the axis of the straight pipe section of the U-shaped pipe 3, and scraping dirt attached to the outer side of the U-shaped pipe 3.

Referring to fig. 1 and 3, the baffle plate 8 includes a first baffle plate 81 and a second baffle plate 82, wherein the arc edge of the first baffle plate 81 projected along the axis of the shell-side cylinder 1 is semicircular and is provided with a notched arch structure. The projection of the second baffle 82 along the axis of the shell-side cylinder 1 is a semicircular structure. The first baffle 81 and the second baffle 82 are alternately distributed on the baffle 7 along the axis of the shell-side cylinder 1. The heat exchange medium flowing in through the heat exchange medium inlet 12 passes through the first baffle 81 and the second baffle 82 which are alternately distributed, the flowing line of the heat exchange medium is wavy, so that the heat transfer effect of the heat exchange medium is improved, and after the medium flowing into the U-shaped tube 3 exchanges heat with the tube wall of the U-shaped tube 3 through the heat exchange medium, the heat exchange medium is discharged out of the shell-side barrel 1 through the heat exchange medium outlet 13.

The implementation principle of the detachable tube bundle type U-shaped tube heat exchanger in the embodiment of the application is as follows:

during assembly: firstly, the baffle plate 8 is clamped on the guide plate 7 through the clamping block 9, then the two ends of the U-shaped pipe 3 penetrate through the baffle plate 8 and extend into the pipe hole 21 of the pipe plate 2, the U-shaped pipe 3 and the pipe plate 2 are fixed by rotating the connecting piece, the connecting piece is fastened on the pipe plate 2 through auxiliary tools such as a hexagonal wrench, an universal wrench and the like, and finally the end socket 5, the pipe plate 2 and the shell side barrel 1 are fixed through the stud bolts, so that the integral assembly is completed.

When the disassembly and maintenance are carried out: loosening the nut on the stud, separating head 5, tube sheet 2 and shell side barrel 1, pulling tube sheet 2, taking out many U-shaped pipes 3 from the inner chamber of shell side barrel 1, alright wash the inside wall of shell side barrel 1. When the leaked U-shaped pipe 3 needs to be replaced, the connecting pipe 4 is rotated by auxiliary tools such as a hexagonal wrench, an universal wrench and the like, the U-shaped pipe 3 is separated from the connection with the pipe plate 2, and a new U-shaped pipe 3 can be replaced. If dirt attached to the outer side wall of the U-shaped pipe 3 needs to be scraped, the bolts of the clamping blocks 9 are loosened, the clamping blocks 9 are taken down from the guide plate 7, the movable baffle plate 8 slides along the axis of the straight pipe section of the U-shaped pipe 3, and then the dirt attached to the outer side of the U-shaped pipe 3 can be scraped.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a can dismantle tube bundle formula U-shaped tube heat exchanger which characterized in that: comprises a shell pass cylinder (1), a tube plate (2), a plurality of U-shaped tubes (3) and connecting tubes (4); the tube plate (2) is fixed at one end of the shell-side cylinder (1), and the other end of the shell-side cylinder (1) is a closed end; the tube plate (2) is provided with a plurality of tube holes (21) which correspond to the end parts of the U-shaped tubes (3) one by one; two ends of the connecting pipe (4) penetrate through; the connecting pipe (4) is detachably connected to the pipe hole (21); the U-shaped pipe (3) is detachably arranged in the connecting pipe (4); the U-shaped pipe (3) is positioned on one side of the pipe plate (2) close to the shell-side cylinder (1).

2. The removable tube bundle, U-tube heat exchanger of claim 1, wherein: the connecting pipe (4) is in threaded connection with the pipe hole (21); the connecting pipe (4) is also in threaded connection with the U-shaped pipe (3).

3. The removable tube bundle, U-tube heat exchanger of claim 2, wherein: a contact part (41) is fixed on the peripheral side of the connecting pipe (4); after the connecting pipe (4) is screwed on the U-shaped pipe (3), the abutting part (41) abuts against one side, far away from the U-shaped pipe (3), of the pipe plate (2).

4. A removable tube bundle, U-tube heat exchanger according to claim 3, wherein: the projection of the abutting part (41) along the axis of the connecting pipe (4) is hexagonal.

5. The removable tube bundle, U-tube heat exchanger of claim 1, wherein: a guide plate (7) is fixed on one side of the tube plate (2) facing the shell pass cylinder (1); the guide plate (7) is positioned between the straight pipe sections of the U-shaped pipe (3).

6. The removable tube bundle, U-tube heat exchanger of claim 5, wherein: a plurality of baffle plates (8) are respectively arranged on two sides of the guide plate (7) facing the straight pipe section of the U-shaped pipe (3); two ends of the U-shaped pipe (3) penetrate through the baffle plate (8) and are connected with the pipe plate (2).

7. The removable tube bundle, U-tube heat exchanger of claim 6, wherein: the guide plate (7) is connected with a plurality of clamping blocks (9) through bolts on two sides facing the straight pipe of the U-shaped pipe (3), and the baffle plate (8) is clamped on the guide plate (7) through the clamping blocks (9).

8. The removable tube bundle, U-tube heat exchanger of claim 6, wherein: the baffle plate (8) is divided into a first baffle plate (81) and a second baffle plate (82); the projection of the first baffle (81) along the axis of the shell pass cylinder (1) is a semicircular arc edge, and an arch structure with a notch is arranged on the arc edge; the projection of the second baffle (82) along the axis of the shell-side cylinder (1) is of a semicircular structure; the first baffle plates (81) and the second baffle plates (82) are alternately distributed on the guide plates (7) along the axis of the shell-side cylinder (1).

9. The removable tube bundle, U-tube heat exchanger of claim 1, wherein: a flange I (11) is fixed at one end of the shell side cylinder body (1) facing the tube plate (2); a flange II (22) is fixed on one side of the tube plate (2) facing the shell pass cylinder (1); the flange I (11) and the flange II (22) are connected with each other through a fastener (6).