Heat exchanger adopting spiral flow deflectors to support heat exchange tubes

Abstract

The utility model discloses a heat exchanger adopting spiral flow deflectors to support heat exchange tubes, which relates to the technical field of heat exchangers and comprises a shell pass cylinder, a first tube box, a second tube box, a tube plate and a plurality of heat exchange tubes, the heat exchange tubes are mounted in the shell pass cylinder, a spiral flow deflector is arranged in a space between each two adjacent heat exchange tubes, and the spiral flow deflectors are arranged in the space between the first tube box and the second tube box. The spiral flow deflectors are in contact with the outer walls of the adjacent heat exchange tubes; according to the heat exchanger, the spiral flow deflectors are adopted for supporting the heat exchange tubes instead of conventional arch-shaped baffle plates for supporting, and when a shell pass liquid material passes through the spiral channels of the spiral flow deflectors, due to the fact that the area of the normal channels is reduced, the flow speed of the liquid can be increased, and the heat exchange effect is improved; and when the shell pass liquid material flows in the spiral channel on the outer wall of the heat exchange tube, a turbulent flow effect can be obtained, and the heat exchange efficiency can be further improved.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of heat exchangers, in particular to a heat exchanger which adopts spiral guide plates to support heat exchange tubes. Background Art

[0002] Heat exchangers are devices that transfer part of the heat of hot fluid to cold fluid, also known as heat exchangers. Heat exchangers play an important role in chemical, petroleum, power, food and many other industrial production. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers, etc. They are widely used, mainly in the fields of petroleum, chemical, metallurgy, electricity, ships, central heating, refrigeration and air conditioning, machinery, food, pharmaceuticals, etc.

[0003] Conventional heat exchangers use bow-shaped baffles to support heat exchange tubes. Since the space between the heat exchange tubes is relatively large, when the shell-side material is liquid, the liquid flow rate is relatively low, resulting in poor heat exchange effect. Therefore, for the working condition where the shell-side material is liquid, we need a heat exchanger that can increase the flow rate of the shell-side liquid material to improve the heat exchange effect. Utility Model Content

[0004] The utility model aims to provide a heat exchanger which adopts spiral guide vanes to support heat exchange tubes, so as to solve the problems raised in the background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A heat exchanger using spiral guide vanes to support heat exchange tubes, comprising a shell-side cylinder, a first tube box, a second tube box, a tube sheet and a plurality of heat exchange tubes, wherein a spiral guide vane is arranged in the space between each adjacent heat exchange tube, and the spiral guide vane is in contact with the outer wall of the adjacent heat exchange tube;

[0007] The top end of the shell-side cylinder near the first pipe box is penetrated and connected with a shell-side material outlet, and the bottom end of the shell-side cylinder near the second pipe box is penetrated and connected with a shell-side material inlet; the bottom end of the first pipe box is penetrated and connected with a tube-side material inlet, and the top end of the second pipe box is penetrated and connected with a tube-side material outlet.

[0008] As a further technical solution of the utility model, after the plurality of heat exchange tubes are inserted into the corresponding tube holes on the tube sheet, a plurality of steel belt rings are arranged on the outside of the heat exchange tubes located on the outside.

[0009] As a further technical solution of the utility model, one end or both ends of the spiral guide vane are provided with positioning round steel, and the positioning round steel is welded and fixed to the spiral guide vane.

[0010] As a further technical solution of the utility model, the tube sheet also serves as a flange, the cylinder section of the first tube box has a tube box flange, and the tube sheet and the tube box flange are connected by bolts.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model adopts spiral guide vanes to support the heat exchange tubes, replacing conventional bow-shaped baffle supports. When the shell-side material is liquid, when the shell-side liquid material passes through the spiral channel of the spiral guide vanes, the normal channel area is reduced, which can increase the flow rate of the liquid and thus improve the heat exchange effect. In addition, when the shell-side liquid material flows in the spiral channel on the outer wall of the heat exchange tube, a turbulent effect can be obtained, which can further improve the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a schematic diagram of a heat exchanger which adopts spiral guide plates to support heat exchange tubes.

[0014] Figure 2 The utility model is a schematic diagram of a spiral guide vane in a heat exchanger which adopts the spiral guide vane to support a heat exchange tube.

[0015] Figure 3 The utility model discloses an internal structure diagram of a heat exchanger which adopts spiral guide vanes to support heat exchange tubes, wherein the outer side of the outer heat exchange tubes is provided with a plurality of steel belt rings.

[0016] Figure 4 The utility model is a schematic diagram of a spiral guide vane with a positioning round steel in a heat exchanger that adopts a spiral guide vane to support a heat exchange tube.

[0017] Figure 5 The utility model is a schematic diagram of a tube sheet in a heat exchanger that uses spiral guide vanes to support heat exchange tubes and serves as a flange and a tube box in which a tube section has a tube box flange.

[0018] In the figure: 1. Shell side cylinder; 10. Shell side material outlet; 11. Shell side material inlet; 12. Heat exchange tube; 13. Spiral guide vane; 130. Positioning round steel; 14. Steel belt ring; 2. First pipe box; 20. Tube side material inlet; 3. Second pipe box; 30. Tube side material outlet; 4. Tube sheet; 5. Tube box flange. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 In an embodiment of the utility model, a heat exchanger using a spiral guide vane to support a heat exchange tube comprises a shell-side cylinder 1, a first tube box 2, a second tube box 3, a tube sheet 4 and a plurality of heat exchange tubes 12, wherein a spiral guide vane 13 is arranged in a space between each adjacent heat exchange tube 12, and the spiral guide vane 13 is in contact with an outer wall of the adjacent heat exchange tube 12;

[0021] The top end of the shell-side cylinder 1 near the first pipe box 2 is penetrated and connected with a shell-side material outlet 10, and the bottom end of the shell-side cylinder 1 near the second pipe box 3 is penetrated and connected with a shell-side material inlet 11; the bottom end of the first pipe box 2 is penetrated and connected with a tube-side material inlet 20, and the top end of the second pipe box 3 is penetrated and connected with a tube-side material outlet 30.

[0022] In this embodiment, after the plurality of heat exchange tubes 12 pass through the corresponding tube holes on the tube sheet 4 , a plurality of steel belt rings 14 are arranged on the outside of the outer heat exchange tubes 12 .

[0023] In this embodiment, a positioning round steel 130 is provided at one or both ends of the spiral guide plate 13 , and the positioning round steel 130 is fixed to the spiral guide plate 13 by welding.

[0024] In this embodiment, the tube sheet 4 also serves as a flange, the cylinder section of the tube box 2 is provided with a tube box flange 5, and the tube sheet 4 and the tube box flange 5 are connected by bolts.

[0025] The working principle of the utility model is: when in use, the liquid material to be heat exchanged is introduced from the shell side material inlet 11, so that it enters the interior of the shell side cylinder 1 and flows axially along the outer wall of the heat exchange tube. At the same time, another material is introduced into the tube side material inlet 20, so that it enters the interior of the heat exchange tube 12 and flows to the other end. The two materials exchange heat through the heat exchange tube 12;

[0026] Spiral guide vanes 13 are used to support the heat exchange tubes 12 instead of conventional bow-shaped baffle supports. When the shell-side liquid material passes through the spiral channel of the spiral guide vanes 13, the normal channel area is reduced, which can increase the flow rate of the liquid and thus improve the heat exchange effect. In addition, when the shell-side liquid material flows in the spiral channel on the outer wall of the heat exchange tube 12, a turbulent effect can be obtained, which can further improve the heat exchange efficiency.

[0027] Since the outer heat exchange tube 12 is not supported by the spiral guide plate 13 , the outer heat exchange tube 12 will vibrate. Fixing the outer heat exchange tube 12 by the steel belt ring 14 can prevent the outer heat exchange tube 12 from vibrating.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A heat exchanger using spiral guide vanes to support heat exchange tubes, characterized in that: It comprises a shell-side cylinder (1), a first tube box (2), a second tube box (3), a tube sheet (4) and a plurality of heat exchange tubes (12), wherein a spiral guide vane (13) is provided in the space between each adjacent heat exchange tube (12), and the spiral guide vane (13) is in contact with the outer wall of the adjacent heat exchange tube (12); The top end of the shell-side cylinder (1) close to the first pipe box (2) is connected through a shell-side material outlet (10), and the bottom end of the shell-side cylinder (1) close to the second pipe box (3) is connected through a shell-side material inlet (11); the bottom end of the first pipe box (2) is connected through a tube-side material inlet (20), and the top end of the second pipe box (3) is connected through a tube-side material outlet (30).

2. A heat exchanger using spiral guide vanes to support heat exchange tubes according to claim 1, characterized in that: After the plurality of heat exchange tubes (12) are inserted into corresponding tube holes on the tube sheet (4), a plurality of steel belt rings (14) are provided on the outside of the heat exchange tubes (12) located on the outside.

3. A heat exchanger using spiral guide vanes to support heat exchange tubes according to claim 1, characterized in that: One end or both ends of the spiral guide plate (13) are provided with a positioning round steel (130), and the positioning round steel (130) and the spiral guide plate (13) are welded and fixed.

4. A heat exchanger using spiral guide vanes to support heat exchange tubes according to claim 1, characterized in that: The tube sheet (4) also serves as a flange, the cylinder section of the first tube box (2) is provided with a tube box flange (5), and the tube sheet (4) and the tube box flange (5) are connected by bolts.

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