Heat exchanger for cooling crystal-containing material

Abstract

The utility model relates to the technical field of heat exchangers, and discloses a heat exchanger for cooling a crystallized material, which comprises a shell, an inlet pipe box, an outlet pipe box and a detachable end cover, one end of the shell is sequentially connected with the inlet tube box and the outlet tube box, and the other end of the shell is connected with the detachable end cover; the shell is respectively connected with the material inlet and the material outlet; the inlet pipe box is connected with a cooling water inlet, and the outlet pipe box is connected with a cooling water outlet; a plurality of winding stair type baffle plate groups and a plurality of longitudinally arranged heat exchange tubes are arranged in the shell; each winding stair type baffle plate group comprises two winding stair type baffle plates which are symmetrically arranged left and right; the winding stair type baffle plates are perpendicular to the longitudinal section of the heat exchange tube, and the radial projection of each winding stair type baffle plate is a semicircle and is matched with the shell. The detachable tube bundle and the optimized shell pass flow are convenient to maintain, and crystal deposition is reduced, so that the service life of equipment is prolonged, and the blockage problem is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a heat exchanger for cooling crystal-containing materials. Background Art

[0002] The existing cooler used a traditional fixed tube-sheet heat exchanger structure, with cooling water flowing through the tubes and crystallized material flowing through the shell. This benefit improved heat transfer efficiency, but the disadvantage was that due to the low material flow rate in the shell side, a large number of baffles had to be used to increase the turbulence intensity in the shell side to achieve the desired heat transfer efficiency. This, however, also inevitably led to the occurrence of dead zones. Consequently, over time, crystals would continuously deposit on the heat exchange tube walls, affecting heat transfer efficiency. These phenomena fully demonstrated the shortcomings of the existing cooler's poor shell side flow, the easy adhesion of crystals, and the difficulty in cleaning. Therefore, the design of a completely new cooler structure was essential. Utility Model Content

[0003] In response to the above-mentioned technical deficiencies, the technical problem to be solved by the present invention is to provide a heat exchanger for cooling materials containing crystals, aiming to improve the fluidity and turbulence intensity of the shell-side fluid and reduce the deposition of crystals by optimizing the cooler structure, thereby improving heat transfer efficiency and simplifying maintenance.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a heat exchanger for cooling crystal-containing materials, comprising: a shell, an inlet pipe box, an outlet pipe box and a detachable end cover;

[0005] One end of the shell is connected to the inlet pipe box and the outlet pipe box in sequence, and the other end is connected to the detachable end cover;

[0006] The shell is connected to the material inlet and the material outlet respectively;

[0007] The inlet pipe box is connected to the cooling water inlet, and the outlet pipe box is connected to the cooling water outlet;

[0008] The shell is provided with a plurality of spiral baffle groups and a plurality of longitudinally arranged heat exchange tubes;

[0009] Each set of spiral staircase baffles includes two spiral staircase baffles arranged symmetrically on the left and right;

[0010] The spiral baffles are arranged perpendicular to the longitudinal section of the heat exchange tube, and the radial projection of each set of spiral baffles is a semicircle and is adapted to the shell.

[0011] Furthermore, the spiral staircase baffle is composed of a first plane plate, a second plane plate, a third plane plate, a fourth plane plate and a fifth plane plate connected together;

[0012] The first plane plate, the third plane plate and the fifth plane plate are perpendicular to the tube bundle composed of a plurality of heat exchange tubes, and the second plane plate and the fourth plane plate are parallel to the tube bundle composed of a plurality of heat exchange tubes.

[0013] Furthermore, the first planar plate and the fifth planar plate are provided with heat exchange tube holes matched with the heat exchange tubes.

[0014] Furthermore, the third planar plate is provided with drainage holes.

[0015] Furthermore, the first plane plates of the left and right spiral baffles in a set of spiral baffles overlap each other;

[0016] The fifth flat plate of the right spiral baffle in one spiral baffle group also overlaps with the fifth flat plate of the left spiral baffle in an adjacent spiral baffle group.

[0017] Furthermore, the tube bundle adopts an insertable and detachable structure.

[0018] Furthermore, the inlet pipe box and the outlet pipe box are separated by a pipe box partition.

[0019] Furthermore, an inserted flow guide pipe connected to one end of the tube bundle passing through the tube sheet is provided on the tube box partition.

[0020] Furthermore, a plug is provided at the other end of the tube bundle that does not pass through the tube sheet.

[0021] Furthermore, a plurality of saddles are provided at the lower end of the shell.

[0022] The beneficial effects of the present invention are:

[0023] 1. The special pipe structure allows the tube bundle to be disassembled and pulled out, making it easier and more effective for users to inspect and maintain the equipment, which will greatly extend the service life of the equipment.

[0024] 2. The special shell-side structure allows the flow of shell-side materials to more easily carry the crystals out of the cooler, thereby alleviating the blockage problem inside the cooler. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic structural diagram of a heat exchanger for cooling crystalline materials provided in an embodiment of the present utility model.

[0027] Figure 2 for Figure 1 Schematic diagram at point A in the middle.

[0028] Figure 3 Schematic diagram of the structure of the spiral staircase baffle.

[0029] Figure 4 This is the left view of the spiral baffle.

[0030] Figure 5 This is the right view of the spiral baffle.

[0031] Explanation of the accompanying symbols: 1. Shell; 2. Inlet pipe box; 3. Outlet pipe box; 4. Removable end cover; 11. Material inlet; 12. Tube bundle; 13. Material outlet; 14. Saddle; 15. Spiral baffle group; 16. Inserted guide pipe; 17. Tube sheet; 18. Tube box partition; 21. Cooling water inlet; 31. Cooling water outlet; 121. Heat exchange tube; 122. Plug; 151. Spiral baffle. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0033] like Figures 1 to 5 As shown, this embodiment provides a heat exchanger for cooling crystalline materials, including: a shell 1, an inlet pipe box 2, an outlet pipe box 3 and a removable end cover 4; one end of the shell 1 is connected to the inlet pipe box 2 and the outlet pipe box 3 in sequence, and the other end is connected to the removable end cover 4; the shell 1 is respectively connected to the material inlet 11 and the material outlet 13 for introducing and discharging crystalline materials; the inlet pipe box 2 is connected to the cooling water inlet 21, and the outlet pipe box 3 is connected to the cooling water outlet 31 for introducing and discharging cooling water; a plurality of groups of spiral baffle groups 15 and a plurality of longitudinally arranged heat exchange tubes 121 are provided in the shell 1; each group of spiral baffle groups 15 includes two spiral baffles 151 arranged symmetrically on the left and right; the spiral baffles 151 are arranged perpendicular to the longitudinal section of the heat exchange tube 121, and the radial projection of each group of spiral baffles 151 is a semicircle and is adapted to the shell 1.

[0034] like Figures 3-5As shown, the spiral baffles 151 are composed of a first, second, third, fourth, and fifth planar plates connected together. The first, third, and fifth planar plates are perpendicular to the tube bundle 12 composed of the plurality of heat exchange tubes 121, while the second and fourth planar plates are parallel to the tube bundle 12 composed of the plurality of heat exchange tubes 121. The first and fifth planar plates are provided with holes for the heat exchange tubes 121, which are arranged to mate with the heat exchange tubes 121. The third planar plate is provided with drainage holes. The first planar plates of the left and right spiral baffles 151 in a spiral baffle group 15 overlap. The fifth planar plate of the right spiral baffle 151 in a spiral baffle group 15 also overlaps with the fifth planar plate of the left spiral baffle 151 in an adjacent spiral baffle group 15. When installing the spiral baffle group 15, tie rods and spacers are used to secure the first spiral baffle 151 in the tube bundle 12. Next, place the second spiral baffle 151 to the right of the first baffle 151 along the axis of the tube bundle 12, ensuring that the adjacent parts of the two baffles are completely aligned. Secure them with tie rods and spacers. Repeat this process, gradually installing the remaining spiral baffles 151, until the entire tube bundle 12 is installed.

[0035] The tube bundle 12 adopts an insertable and removable structure; the inlet tube box 2 and the outlet tube box 3 are separated by a tube box partition 18, which is used to separate the flow path of the cooling water and improve heat transfer efficiency. The tube box partition 18 is provided with an insertable guide tube 16 connected to the end of the tube bundle 12 passing through the tube sheet 17. The tube sheet 17 is used to fix the heat exchange tubes 121 to ensure the flow of cooling water within the tube path. The other end of the tube bundle 12 that does not pass through the tube sheet 17 is provided with a plug 122. The lower end of the shell 1 is also provided with several saddles 14 to support the heat exchanger and ensure stable operation of the equipment.

[0036] The structure of the cooler designed by the present invention still adopts the scheme of cooling water flowing through the tube side and crystallizing material flowing through the shell side to ensure that higher heat transfer efficiency is achieved with smaller pressure drop on the material side. In addition, the tube bundle adopts an insertable and detachable structure, and the shell side baffle adopts a spiral ladder-type baffle structure to meet the requirements of eliminating flow dead zones and improving shell side fluidity.

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A heat exchanger for cooling a crystalline material, characterized in that: include: It includes a shell, an inlet pipe box, an outlet pipe box and a removable end cover; One end of the shell is connected to the inlet pipe box and the outlet pipe box in sequence, and the other end is connected to the detachable end cover; The shell is connected to the material inlet and the material outlet respectively; The inlet pipe box is connected to the cooling water inlet, and the outlet pipe box is connected to the cooling water outlet; The shell is provided with a plurality of spiral baffle groups and a plurality of longitudinally arranged heat exchange tubes; Each set of spiral staircase baffles includes two spiral staircase baffles arranged symmetrically on the left and right; The spiral baffles are arranged perpendicular to the longitudinal section of the heat exchange tube, and the radial projection of each set of spiral baffles is a semicircle and is adapted to the shell.

2. The heat exchanger for cooling the crystallized material according to claim 1, characterized in that The spiral staircase baffle is composed of a first plane plate, a second plane plate, a third plane plate, a fourth plane plate and a fifth plane plate connected together; The first plane plate, the third plane plate and the fifth plane plate are perpendicular to the tube bundle composed of a plurality of heat exchange tubes, and the second plane plate and the fourth plane plate are parallel to the tube bundle composed of a plurality of heat exchange tubes.

3. The heat exchanger for cooling the crystallized material according to claim 2, characterized in that: The first plane plate and the fifth plane plate are provided with heat exchange tube holes which are matched with the heat exchange tubes.

4. The heat exchanger for cooling the crystallized material according to claim 2, characterized in that The third plane plate is provided with drainage holes.

5. The heat exchanger for cooling the crystal-containing material according to any one of claims 1 or 2, characterized in that: The first plane plates of the left and right spiral baffles in a set of spiral baffles overlap each other; The fifth flat plate of the right spiral baffle in one spiral baffle group also overlaps with the fifth flat plate of the left spiral baffle in an adjacent spiral baffle group.

6. The heat exchanger for cooling the crystal-containing material according to claim 2, characterized in that: The tube bundle adopts an insertable and detachable structure.

7. The heat exchanger for cooling the crystal-containing material according to claim 1, characterized in that The inlet pipe box and the outlet pipe box are separated by a pipe box partition.

8. The heat exchanger for cooling the crystal-containing material according to claim 6, characterized in that An inserted flow guide pipe connected to one end of the tube bundle passing through the tube sheet is provided on the tube box partition.

9. The heat exchanger for cooling crystal-containing materials according to claim 4, characterized in that The other end of the tube bundle that does not pass through the tube sheet is provided with a plug.

10. The heat exchanger for cooling crystal-containing materials according to claim 1, characterized in that A plurality of saddles are provided at the lower end of the shell.

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