CN211527166U

CN211527166U - Heat exchanger core

Info

Publication number: CN211527166U
Application number: CN201921731633.4U
Authority: CN
Inventors: 张伟; 郭锦翔; 钱静
Original assignee: Yangzhong Shenyang Heat Exchange Equipment Co ltd
Current assignee: Yangzhong Shenyang Heat Exchange Equipment Co ltd
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2020-09-18
Anticipated expiration: 2029-10-16

Abstract

The utility model discloses a heat exchanger core, which comprises a heat exchange tube plate and a grid plate, wherein the heat exchange tube comprises a U-shaped tube part, a first straight tube part and a second straight tube part which are respectively connected with two ports of the U-shaped tube part; the pipe plate comprises a plurality of medium inlets and a plurality of medium outlets, the port of the first straight pipe part is welded with the medium inlets, and the port of the second straight pipe part is welded with the medium outlets; the heat exchange medium enters the heat exchange tube from the medium inlet for heat exchange and then flows out from the medium outlet; the grating plate comprises a first baffle plate, a second baffle plate and a ring plate, the first baffle plate and the second baffle plate are vertically and crossly connected, a grating gap is formed between the first baffle plate and the second baffle plate, and the first baffle plate and the second baffle plate are connected in the ring plate; the first straight tube part and the second straight tube part of the heat exchange tube penetrate through the grid gap and are connected to the tube plate, and a supporting plate for supporting the heat exchange tube is connected between the grid plate and the tube plate; the utility model discloses a heat exchanger core stable in structure, heat transfer are effectual.

Description

Heat exchanger core

Technical Field

The utility model relates to a heat exchanger technical field, concretely relates to heat exchanger core.

Background

The shell-and-tube heat exchanger is a traditional and widely applicable heat exchange device. The shell-and-tube heat exchanger comprises a core body and a shell body, and the shell body can be made of various materials and has strong adaptability. The heat exchange is carried out through the core body during the heat exchange, and the heat exchange device has the advantages of good heat exchange effect and large heat exchange quantity.

The heat exchange device in the core body of the heat exchanger basically adopts a heat exchange tube. During heat exchange, the medium in the heat exchange pipe is cooled or heated through air to exchange heat. In the heat exchanger core of bulky, the length of heat exchange tube can be very long, how to fix the heat exchange tube, guarantees that the heat exchange tube is holistic firm, and does not influence the heat transfer effect of heat exchange tube and be the problem that my research personnel cared about.

Disclosure of Invention

An object of the utility model is to provide a heat exchanger core to solve among the prior art heat exchange tube fixed insecure, the not good problem of heat transfer effect.

In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:

a heat exchanger core comprising:

the heat exchange tube comprises a U-shaped tube part, a first straight tube part and a second straight tube part, wherein the first straight tube part and the second straight tube part are respectively connected to two ports of the U-shaped tube part;

the pipe plate comprises a plurality of medium inlets and a plurality of medium outlets, the port of the first straight pipe part is welded with the medium inlets, and the port of the second straight pipe part is welded with the medium outlets; after entering the heat exchange tube from the medium inlet for heat exchange, the heat exchange medium flows out from the medium outlet;

the grating plate comprises a first baffle plate, a second baffle plate and a ring plate, wherein the first baffle plate and the second baffle plate are vertically and crossly connected, a grating gap is formed between the first baffle plate and the second baffle plate, and the first baffle plate and the second baffle plate are connected in the ring plate;

the first straight tube part and the second straight tube part of the heat exchange tube penetrate through the grid gaps and are connected to the tube plate, and a supporting plate used for supporting the heat exchange tube is further connected between the grid plate and the tube plate.

Furthermore, the grid gaps are square, and the side length of each grid gap is 0.25-0.35mm larger than the diameter of each heat exchange tube.

Further, the first baffle plate and the second baffle plate are both connected with the annular plate in a welding mode. The welded connection ensures the firm connection with the ring plate.

Further, the grid plate and the supporting plate are both circular, and the outer diameter of the grid plate is the same as that of the supporting plate. The grating plate and the supporting plate adopt the same outer diameter, so that the installation is convenient during the installation.

Further, the grid plate is close to the U-shaped tube part of the heat exchange tube. The U-shaped pipe part is arranged at the tail end of the heat exchange pipe, the vibration at the position is the largest during heat exchange, and the grid plate is arranged at the position, so that the structure is convenient to stabilize.

Further, the support plate comprises a plate body and a pipe hole penetrating through the plate body, and the first straight pipe portion and the second straight pipe portion of the heat exchange pipe penetrate through the pipe hole and are connected to the pipe plate.

Furthermore, the tube plate further comprises a plurality of parallel strip rails, one end of each strip rail is vertically and fixedly connected to the tube plate, and the other end of each strip rail is welded with the ring plate. The strip rail plays a role of fixing the ring plate.

Furthermore, a strip rail groove is formed in the supporting plate, and the strip rail is connected in the strip rail groove in a sliding mode. When the supporting plate is installed, the supporting plate is connected to the strip rail in a sliding mode, the supporting plate is convenient to move, and the supporting plate and the strip rail are welded after the supporting plate is in place, so that the supporting plate is fixed.

Further, the first straight pipe portion and the second straight pipe portion are connected with the pipe plate through welding and expansion joint. The expansion joint and welding connection mode is adopted, on one hand, the sealing effect of the straight pipe part and the pipe plate can be guaranteed, on the other hand, the connection part can bear larger vibration or fatigue load, and the service life is prolonged.

Further, the support plate and the tube plate are connected through a distance tube.

According to the above technical scheme, the embodiment of the utility model has following effect at least:

1. the heat exchange tube is connected with the support plate and the tube plate, the support plate supports the heat exchange tube, so that the preliminary stability of the heat exchange tube is ensured, and the connection part of the U-shaped tube part and the straight tube part of the heat exchange tube is further reinforced through the grating plate, so that the stability of the heat exchange tube is ensured; during heat exchange, due to the existence of the grating plates, the vibration generated during heat transfer of the heat exchange tube is reduced, the abrasion of the heat exchange tube is reduced, and the service life of the device is prolonged;

2. the side length of the grid clearance of the grid plate is slightly larger than the diameter of the heat exchange tube, so that the heat exchange tube and the grid plate are convenient to mount on one hand; on the other hand, because the gap that exists between, the circulation of air when being convenient for the heat transfer has increased the heat transfer effect.

Drawings

FIG. 1 is a schematic view of the overall structure of a heat exchanger core according to an embodiment of the present invention;

FIG. 2 is a schematic view of a cross-section A-A of the support plate of FIG. 1;

FIG. 3 is a schematic structural view of a heat exchange tube according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a grid plate according to an embodiment of the present invention;

FIG. 5 is an enlarged view taken at A in FIG. 4;

FIG. 6 is an enlarged view at B in FIG. 4;

FIG. 7 is a schematic cross-sectional view of a ring plate according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a first baffle plate according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a second baffle plate according to an embodiment of the present invention;

fig. 10 is a schematic view of the connection between the support plate and the heat exchange tube according to the embodiment of the present invention.

Wherein: 1. a grid plate; 2. a nut; 3. a support plate; 4. a first pitch tube; 5. a pull rod; 6. a heat exchange pipe; 7. a rail; 8. a second distance tube; 9. a tube sheet; 11. a ring plate; 12. a first baffle plate; 13. a second baffle plate; 14. a grid gap; 31. a plate body; 32. a rail groove; 33. a tube hole; 34. connecting holes; 61. a first straight pipe portion; 62. a second straight tube portion; 63. u-shaped pipe portion.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

It should be noted that, in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention but do not require the present invention to be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. As used in the description of the present invention, the terms "front," "back," "left," "right," "up," "down" and "in" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1 to 10, a heat exchanger core comprises a heat exchange tube 6, a tube plate 9 and a grid plate 1, wherein the heat exchange tube 6 comprises a U-shaped tube part 63, and a first straight tube part 61 and a second straight tube part 62 which are respectively connected with two ports of the U-shaped tube part 63; the tube plate 9 comprises a plurality of medium inlets and a plurality of medium outlets, the port of the first straight tube part 61 is welded with the medium inlets, and the port of the second straight tube part 62 is welded with the medium outlets; the heat exchange medium enters the heat exchange tube 6 from the medium inlet for heat exchange and then flows out from the medium outlet; the grating plate 1 comprises a first baffle plate 12, a second baffle plate 13 and a ring plate 11, the first baffle plate 12 and the second baffle plate 13 are vertically and crossly connected, a grating gap 14 is formed between the first baffle plate 12 and the second baffle plate 13, and the first baffle plate 12 and the second baffle plate 13 are connected in the ring plate 11; the first and second straight tube portions 61 and 62 of the heat exchange tube 6 are connected to the tube sheet 9 through the grill gap 14, and a support plate 3 for supporting the heat exchange tube 6 is further connected between the grill plate 1 and the tube sheet 9.

In the present embodiment, the heat exchange tube 6 has a structure as shown in fig. 3, the right end of the heat exchange tube 6 is a first straight tube portion 61 and a second straight tube portion 62, the left end is a U-shaped tube portion 63, the first straight tube portion 61 and the second straight tube portion 62 are integrally formed, the inner diameters of the U-shaped tube portion 63 and the first straight tube portion 61 are the same, and the heat exchange tube is made of a material having a good heat conduction effect. In the same heat exchanger, the radius R of the U-shaped tube portion 63 is selected to be different depending on the installation position thereof, and the first straight tube portion 61 and the second straight tube portion 62 have the same length. The first straight tube portion 61 is a media inlet and the second straight tube portion 62 is a media outlet.

As shown in fig. 1, in use, the heat exchange medium enters the first straight pipe portion 61 from the medium inlet at the upper part of the right end of the tube plate 9, passes through the whole U-shaped pipe portion 63, flows out of the second straight pipe portion 62, and flows to the medium outlet at the right end of the tube plate 9, and the heat exchanger core completes the whole overheating process.

As shown in fig. 2, the supporting plate 3 includes a circular plate 31, a pipe hole 33 for fixing the heat exchange pipe 6 is formed in the plate 31, 8 to 10 rail grooves 32 are formed in the plate 31, and the rail grooves 32 are located at the edge of the plate 31. The plate body 31 is further provided with a connecting hole 34. As shown in fig. 1, the present invention further comprises a bar rail 7. During assembly, the right end of the bar rail 7 is welded to the tube plate 9. A plurality of strip rails 7 connected on the tube plate 9 are parallel to each other, and the support plate 3 is installed after the strip rails are installed. The strip rail groove 32 of the support plate 3 is sleeved on the strip rail 7, the support plate 3 is welded with the strip rail 7 after the support plate 3 is slid to the position of the Suzhou image, and the support plate 3 is installed. In this way, as shown in fig. 1, two support plates 3 are installed, the support plate 3 on the right side is further connected with the tube plate 9 through the second distance tube 8, the support plate 3 on the left side is connected with the first distance tube 4, one end of the pull rod 5 is connected with the tube plate 9, and the pull rod penetrates through the first distance tube 4 and the second distance tube 8 and is connected to the support plate 3 on the right side through the nut 2.

As shown in fig. 4 to 9, the grid plate 1 comprises a first baffle plate 12, a second baffle plate 13 and a ring plate 11. The ring plate 11 is made of a plate with a width of about 75mm and the baffle plate is made of a plate with a width of about 40 mm. When assembling, the first baffle plate 12 and the second baffle plate 13 are connected in a staggered manner and welded to the inner circumference of the annular plate 11. The ring plate 11 is bent into a circular shape, so that the whole grid plate 1 is circular. The diameter of the grating plate 1 is the same as that of the support plate 3, so that the device is convenient to assemble. A grid gap is formed between the first baffle plate 12 and the second baffle plate 13, the grid gap 14 is square, and the side length of the grid gap 14 is 0.3mm larger than the diameter of the heat exchange tube 6. The side length of the grid gap 14 is slightly larger than the diameter of the heat exchange tube 6, so that the heat exchange tube 6 and the grid plate 1 can be conveniently installed on one hand; on the other hand, because the gap that exists between, the circulation of air when being convenient for the heat transfer has increased the heat transfer effect.

The installation of the grating plate 1 is slightly different from that of the supporting plate 3, and during installation, after the grating plate 1 is positioned, the ring plate 11 at the periphery of the grating plate 1 is cut with corresponding cuts, the strip rails 7 are arranged in the cut openings, and the strip rails 7 and the ring plate 11 are welded to fix the grating plate 1. After the grid plates 1 are installed, the heat exchange tubes 6 are assembled into the integral framework, and the installation of the whole heat exchanger core is completed. In the present embodiment, the grid plate 1 is adjacent to the U-shaped tube portion 63 of the heat exchange tube 6. The U-shaped pipe part 63 is arranged at the tail end of the heat exchange pipe, so that the vibration is maximum when the heat exchange is carried out, the grid plate 1 is arranged at the position, the structure is convenient to stabilize, and the service life of the device is prolonged.

In the present embodiment, as shown in fig. 10, each of the first straight tube portion 61 and the second straight tube portion 62 is connected to the tube sheet 9 by welding and expansion. The right end of the tube plate 9 is directly communicated with the heat exchange medium, so that the sealing effect at the tube plate 9 must be ensured. The expansion joint and welding connection mode is adopted, on one hand, the sealing effect of the straight pipe part and the pipe plate can be guaranteed, on the other hand, the connection part can bear larger vibration or fatigue load, and the service life of the whole device is prolonged.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims

1. A heat exchanger core, comprising:

the heat exchange tube (6) comprises a U-shaped tube part (63) and a first straight tube part (61) and a second straight tube part (62) which are respectively connected to two ports of the U-shaped tube part (63);

a tube plate (9) comprising a plurality of media inlets and a plurality of media outlets, the port of the first straight tube portion (61) being welded to the media inlets, the port of the second straight tube portion (62) being welded to the media outlets; the heat exchange medium enters the heat exchange tube (6) from the medium inlet for heat exchange and then flows out from the medium outlet;

the grating plate (1) comprises a first baffle plate (12), a second baffle plate (13) and a circular plate (11), the first baffle plate (12) and the second baffle plate (13) are vertically and crossly connected, a grating gap (14) is formed between the first baffle plate (12) and the second baffle plate (13), and the first baffle plate (12) and the second baffle plate (13) are connected in the circular plate (11);

the first straight tube part (61) and the second straight tube part (62) of the heat exchange tube (6) penetrate through the grid gap (14) and are connected to the tube plate (9), and a support plate (3) used for supporting the heat exchange tube (6) is further connected between the grid plate (1) and the tube plate (9).

2. A heat exchanger core according to claim 1, wherein the shape of the grid gaps (14) is square and the side length of the grid gaps (14) is 0.25-0.35mm larger than the diameter of the heat exchange tubes (6).

3. The heat exchanger core according to claim 1, wherein the first and second baffle plates (12, 13) are welded to the ring plate (11).

4. The heat exchanger core according to claim 1, wherein the grid plate (1) and the support plate (3) are both circular and the outer diameter of the grid plate (1) and the outer diameter of the support plate (3) are the same.

5. A heat exchanger core according to claim 1, wherein the grid plates (1) are adjacent to U-shaped tube portions (63) of the heat exchange tubes (6).

6. The heat exchanger core according to claim 1, wherein the support plate (3) comprises a plate body (31) and a tube bore (33) extending through the plate body (31), the first and second straight tube portions (61, 62) of the heat exchange tube (6) being connected to the tube sheet (9) through the tube bore (33).

7. The heat exchanger core according to claim 1, further comprising a plurality of mutually parallel bar rails (7), wherein one end of the bar rails (7) is vertically and fixedly connected to the tube plate (9), and the other end is welded to the ring plate (11).

8. The heat exchanger core according to claim 7, wherein the support plate (3) is provided with a rail groove (32), the rail (7) being slidably connected in the rail groove (32).

9. A heat exchanger core according to claim 1, wherein the first straight tube portion (61) and the second straight tube portion (62) are each connected to the tube sheet (9) by a weld-and-expand joint.

10. A heat exchanger core according to claim 1, wherein the support plate (3) and the tube sheet (9) are connected by distance tubes.