CN213067184U

CN213067184U - Safe type heat exchanger

Info

Publication number: CN213067184U
Application number: CN202021842409.5U
Authority: CN
Inventors: 王雨欢
Original assignee: Changshu New Century Chemical Co ltd
Current assignee: Changshu New Century Chemical Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-04-27
Anticipated expiration: 2030-08-28

Abstract

The utility model relates to a safe type heat exchanger, it includes the casing and sets up at the last pipe case on casing upper portion and set up the lower pipe case in the casing lower part, and the casing both ends are provided with interior tube sheet respectively, form shell side medium chamber between two inner tube boards, are provided with the heat exchange tube in the shell side medium chamber, fix the baffling board on the heat exchange tube. The plurality of baffle plates are arranged in an overlapped mode in the up-down direction of the supporting column, so that material heat is fully contacted and transferred between fluids, and the energy utilization rate is improved. The two ends of the heat exchange tube are in full-welding connection with the surface of the outer tube plate, the inner tube plate, the outer tube plate and the shell are in full-welding connection, and leakage of media at the joint is avoided. A flash cavity is formed between the inner tube plate and the outer tube plate, and the flash cavity is communicated with the discharge hole I and the discharge hole II, so that leaked media are discharged to the flash cavity and discharged through the discharge hole, and the disastrous accidents caused by chemical reaction due to the mixing of the two leaked media are avoided.

Description

Safe type heat exchanger

Technical Field

The utility model relates to a novel heat exchanger especially relates to a safe type heat exchanger.

Background

The heat exchanger is an energy-saving device for realizing heat transfer between materials between two or more than two fluids with different temperatures, and the heat is transferred from the higher fluid to the lower fluid, so that the temperature of the fluid reaches the index specified by the process, the requirement of process conditions is met, and the energy utilization rate is improved.

The shell-and-tube heat exchangers used in petrochemical industry and other industries are mostly single-layer tube plate heat exchangers, the single-layer tube plate heat exchangers are easy to leak at joints where tubes and tube plates are connected, and with the increase of equipment operation time, the heat exchange tubes between shell passes are likely to leak at any time due to corrosion or the quality of the heat exchange tubes, so that the two media of the shell passes and the tube passes are mixed to generate chemical reaction to cause catastrophic accidents.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a safe type heat exchanger has solved because of the heat exchange tube junction of individual layer tube sheet or the quality of heat exchange tube itself causes the leakage, leads to the mixed problem that takes place chemical reaction and cause catastrophic accident to take place of two kinds of media of shell side and tube side.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a safe type heat exchanger, it includes the casing and sets up last pipe case on casing upper portion is in with the setting the lower pipe case of casing lower part, the casing both ends are provided with interior pipe plate respectively, two form shell side medium chamber between the inner tube board, be provided with the baffling board in the shell side medium chamber, its characterized in that, it still includes outer pipe plate, support column and distance tube, outer pipe plate sets up the both ends of casing, interior pipe plate with form the flash chamber between the outer tube board, the support column sets up in the shell side medium chamber, the distance tube is established on the support column, the baffling board is fixed just set up two adjacent on the support column between the distance tube.

Further, the support column is provided with a plurality of.

Furthermore, the baffle plate is provided with a plurality of blocks which are overlapped in the vertical direction of the supporting columns, so that the heat of the materials is fully contacted and transferred between the fluids, and the energy utilization rate is improved.

Further, it still includes relief hole I and relief hole II, relief hole I with casing upper portion the flash chamber link up mutually, relief hole II with the casing lower part the flash chamber link up mutually, avoids the medium to cause the leakage in the junction.

Furthermore, the heat exchange tube also comprises a heat exchange tube penetrating through the inner tube plate and the outer tube plate, and two ends of the heat exchange tube are respectively in full-welding connection with the surface of the outer tube plate, so that the leakage of a medium at a joint is avoided.

Further, the heat exchange tube penetrates through the inner tube plate and the outer tube plate and is attached to and connected with the inner tube plate and the outer tube plate in an expanding mode.

Further, the inner tube plate and the shell are connected in a full welding mode.

Furthermore, the outer pipe plate and the shell are connected in a full welding mode.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model discloses an interior tube sheet and outer tube inter-plate form the flash chamber, relief hole I and II flash chambers of relief hole link up mutually, and the flash chamber is discharged and is discharged through the relief hole to the medium of leaking to and the both ends of heat exchange tube and outer tube plate surface are connected with full weld mutually, and interior tube sheet, outer tube sheet and casing are connected with full weld mutually, and the mixed emergence chemical reaction of two kinds of mediums of avoiding leaking causes catastrophic accident.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic diagram of the overall structure of the safety heat exchanger of the present invention;

fig. 2 is a schematic view of the structure in the direction a in fig. 1.

Fig. 3 is a schematic diagram of the structure at B in fig. 1.

Fig. 4 is a schematic diagram of the structure at C in fig. 1.

Wherein the reference numerals are as follows:

1. a housing; 2. an upper pipe box; 21. a tube side medium cavity; 3. a lower pipe box; 31. a tapping port; 4. an inner tube sheet; 5. an outer tube sheet; 6. a flash chamber; 7. a vent port; 8. a discharge port; 9. a water inlet; 10. a water outlet; 11. an air inlet; 12. an exhaust port; 13. a shell-side media cavity; 14. a heat exchange pipe; 15. a baffle plate; 16. a support pillar; 17. a discharge hole I; 18. a discharge hole II; 19. a distance tube.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

The safety heat exchanger shown in fig. 1 includes a shell 1, an upper tube box 2, a shell-side medium cavity 13, a lower tube box 3, an inner tube plate 4, an outer tube plate 5 and a flash cavity 6. The shell 1 is in a cylindrical shape, the two ends of the shell 1 are respectively provided with the inner pipe plates 4, a shell pass medium cavity 13 is formed between the two inner pipe plates 4, the outer pipe plates 5 are arranged at the two ends of the shell 1, the flash cavity 6 is formed between the inner pipe plates 4 and the outer pipe plates 5, the upper pipe box 2 is arranged on the upper portion of the shell 1, the upper pipe box 2 is connected with the shell 1 through a fastener (in the embodiment, the fastener is an element with a connecting function, such as a bolt), the lower pipe box 3 is arranged on the lower portion of the shell 1, the lower pipe box 3 is connected with the shell 1 through a fastener (in the embodiment, the fastener is an element with a connecting function, such as a bolt), a support frame is arranged at the bottom of the lower pipe.

The structure schematic diagram in the direction a shown in fig. 2 shows that the safety heat exchanger further includes an air inlet 11, an air outlet 12, and a liquid discharge port 31, the side surface of the lower tube box 3 is cylindrical, the bottom of the lower tube box 3 is hemispherical, and the two parts are smoothly and seamlessly fastened together, the side surface of the bottom of the lower tube box 3 is provided with the air inlet 11, and the tube orifice of the air inlet 11 faces the radial direction of the cylindrical side surface, so that the fluid medium can be conveniently input. In the present exemplary embodiment, the gas medium is supplied to the gas inlet opening 11. The radial direction of the bottommost of the hemispherical part at the bottom of the lower tube box 3 is provided with a liquid discharging port 31, the liquid discharging port 31 is L-shaped, one end of an L-shaped bent tube is connected with the bottommost of the hemispherical part, the other end of the L-shaped bent tube faces the radial direction of the cylindrical side face, so that gas media input by the gas inlet 11 can be conveniently discharged from the liquid discharging port 31 completely through a heat exchange process.

The safety heat exchanger also comprises a water inlet 9, a water outlet 10, a heat exchange tube 14, a baffle plate 15, a support column 16 and a distance tube 19. The shell 1 is cylindrical, a water inlet 9 is arranged at the lower part of the shell 1, a water outlet 10 is arranged at the upper part of the shell 1, fluid media are input from the water inlet 9 and circularly flow in a shell side media cavity 13, so that material heat between fluids is fully contacted and transferred and is discharged from the water outlet 10. A plurality of heat exchange tubes 14 are arranged in the shell side medium cavity 13, two ends of each heat exchange tube 14 are respectively connected with the outer tube plate 5, the upper ends of the heat exchange tubes 14 are connected with the upper surface of the upper outer tube plate 5 in a full-welding mode and penetrate through the upper inner tube plate 4 to be communicated with the tube side medium cavity 21 in the upper tube box 2, the heat exchange tubes 14 are connected with the penetrating parts of the inner tube plate 4 and the outer tube plate 5 in an adhering and expanding mode, the lower ends of the heat exchange tubes 14 are connected with the lower surface of the lower outer tube plate 5 in a full-welding mode and penetrate through the lower inner tube plate 4 to be communicated with the tube side medium cavity 21 in the lower tube box 3, and the heat. The setting of full weld connection and the setting of pasting the rising and being connected for the connection position fastening connection prevents that the medium from leaking. Specifically, the medium fed from the gas inlet 11 into the tube-side medium cavity 21 of the lower tube box 3 enters the tube-side medium cavity 21 of the upper tube box 2 through the heat exchange tubes 14 and is discharged from the gas discharge holes 12 of the upper tube box 2, and a part of a small amount of the medium is cooled into a liquid in the tube-side medium cavity 21 of the lower tube box 3 and is discharged from the liquid discharge port 31.

A baffle plate 15 and support columns 16 are disposed in the shell-side media chamber 13. The support plates 16 are fixed on the inner pipe plate 4, the support plates 16 are arranged according to actual conditions, one ends of the support plates 16 are connected with the inner pipe plate 4 through fasteners (in the embodiment, the fasteners are elements with connecting effect such as bolts), the baffle plates 16 are provided with a plurality of blocks and are fixedly connected with the support plates 16, two adjacent baffle plates 16 are arranged at intervals and are overlapped with projection parts extending to the inner pipe plate 4 on the lower portion of the shell 1 in opposite directions, and the baffle plates 6 are arranged in an overlapped mode in the up-down direction of the support plates 16, so that material heat between fluids is sufficiently contacted and transferred, and the energy utilization rate is improved. The distance pipe 19 is arranged at the interval part of the two baffle plates 16, the distance pipe 19 is sleeved on the supporting column 16 and used for spacing the baffle plates 16, and the baffle plate 15 is fixed on the supporting column 16 and arranged between the two adjacent distance pipes 19. Each baffle 6 is smaller than the cylinder diameter of the shell 1, and a space for medium to flow is reserved.

As shown in fig. 3, which is a schematic structural diagram of fig. 1B, vent holes 7 are provided on the inner tube plate 4 in the upper part of the housing 1 through the housing 1, and the vent holes 7 are mainly arranged to balance the pressure in the shell-side medium chamber 13 when the shell-side medium chamber 13 discharges the flowing medium. The outer pipe plate 5 at the upper part of the shell 1 is provided with a discharge hole I17, and the discharge hole I17 is mainly used for discharging leakage media in the flash cavity 6.

As shown in fig. 4, which is a schematic structural diagram at C in fig. 1, a purge port 8 is provided on the inner tube plate 4 at the lower part of the casing 1 through the casing 1, the purge port 8 is mainly provided to discharge the fluid medium in the casing-side medium cavity 13, and the vent hole 7 is mainly provided to balance the pressure in the casing-side medium cavity 13 when the purge port 8 discharges the fluid medium in the casing-side medium cavity 13. The outer pipe plate 5 at the upper part of the shell 1 is provided with a discharge hole II 18, and the discharge hole II 18 is mainly used for discharging leakage media in the flash cavity 6.

The baffle plates 15 are arranged in an overlapped mode in the up-down direction of the supporting column 16, so that material heat between fluids is sufficiently contacted and transferred, and the energy utilization rate is improved. The two ends of the heat exchange tube 14 are in full-welding connection with the surface of the outer tube plate 5, the inner tube plate 4, the outer tube plate 5 and the shell 1 are in full-welding connection, and leakage of media at the joint is avoided. A flash cavity 6 is formed between the inner pipe plate 4 and the outer pipe plate 5, and the discharge hole I17 and the discharge hole II 18 are communicated with the flash cavity 6, so that leaked media are discharged to the flash cavity 6 and are discharged through the discharge hole 17, and disastrous accidents caused by chemical reaction due to mixing of the two media are avoided.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The safety heat exchanger is characterized by further comprising an outer pipe plate (5), support columns (16) and distance pipes (19), wherein the outer pipe plate (5) is arranged at two ends of the shell (1), the inner pipe plate (5) is arranged at two ends of the shell (1), a flash cavity (6) is formed between the inner pipe plate (4) and the outer pipe plate (5), the support columns (16) are arranged in the shell-side medium cavity (13), the distance pipes (19) are sleeved on the support columns (16), and the baffle plates (15) are fixed on the support columns (16) and arranged between two adjacent distance pipes (19).

2. Safety heat exchanger according to claim 1, characterized in that the supporting columns (16) are provided in plurality.

3. Safety heat exchanger according to claim 1, wherein the baffles (15) are provided in a plurality of pieces and are arranged one above the other in the vertical direction of the support columns (16).

4. The safety heat exchanger according to claim 1, characterized in that it further comprises a discharge hole I (17) and a discharge hole II (18), wherein the discharge hole I (17) is communicated with the flash chamber (6) at the upper part of the shell (1), and the discharge hole II (18) is communicated with the flash chamber (6) at the lower part of the shell (1).

5. The safety heat exchanger according to claim 1, further comprising a heat exchange tube (14) penetrating the inner tube plate (4) and the outer tube plate (5), wherein both ends of the heat exchange tube (14) are respectively connected with the surface of the outer tube plate (5) by full welding.

6. The safety heat exchanger according to claim 1, characterized in that the inner tube plate (4) is connected to the housing (1) by full welding.

7. Safety heat exchanger according to claim 1, wherein the outer tube plate (5) is connected to the housing (1) by full welding.