Silicon carbide heat exchanger

Abstract

The utility model provides a silicon carbide heat exchanger, which belongs to the technical field of heat exchangers, comprises a heat exchange device, the heat exchange device comprises a shell, a first tube box and a second tube box, and the first tube box and the second tube box are respectively positioned at two ends of the shell, and is characterized in that a heat exchange inner core is arranged in the shell and comprises two end plates which are distributed in parallel; a plurality of heat exchange pipe fittings are arranged between the two end plates, each heat exchange pipe fitting comprises a silicon carbide heat exchange pipe body, and a first ceramic piece and a second ceramic piece which form a lining are arranged in each silicon carbide heat exchange pipe body. The heat exchange tube does not need to be detached from the baffle plate, so that the heat exchanger is very convenient, heat transfer is prevented from being hindered by incrustation scale, heat exchange efficiency is prevented from being reduced, the heat exchange tube is protected, and corrosion conditions are reduced.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of heat exchangers, in particular to a silicon carbide heat exchanger. Background Art

[0002] A heat exchanger is a device used to transfer heat from one fluid to another without direct contact between the two. This heat exchange process is indispensable in many industrial and daily applications, such as heating, air conditioning, power generation, petrochemicals, food processing, etc. The heat exchanger achieves heat transfer through its internal heat transfer surfaces (such as tubes, plates or other specially designed surfaces). The working principle of the heat exchanger is based on the three basic heat transfer methods of heat conduction, convection and radiation. In a heat exchanger, there are usually two fluids: one fluid releases heat (hot fluid) and the other fluid absorbs heat (cold fluid).

[0003] Silicon carbide heat exchanger is a heat exchange device made of silicon carbide material. Silicon carbide (SiC) is a ceramic material with high hardness, high temperature resistance, corrosion resistance and good thermal conductivity. These characteristics make silicon carbide heat exchangers very effective in specific industrial applications, especially in extreme working conditions where traditional metal heat exchangers are difficult to meet the requirements. In current silicon carbide heat exchangers, the water flowing through the heat exchange tubes generally contains calcium and magnesium ions. During the heating process, the temperature of these minerals will increase, causing the minerals dissolved in the water to precipitate and form deposits on the tube wall, namely scale. In addition, due to Heat exchange tubes made of silicon carbide are relatively expensive, so they are generally not replaced directly and need to be cleaned manually by staff. The outer wall of the heat exchange tube is easy to clean, but the inner wall of the heat exchange tube is difficult to clean. If the inner wall of the heat exchange tube is not cleaned, scale will act as a thermal resistance material, hindering the transfer of heat and causing a decrease in heat exchange efficiency. Therefore, to achieve the same heat exchange effect, higher energy consumption may be required, and the accumulation of scale will reduce the inner diameter of the heat exchange tube, further reducing the flow rate and heat exchange efficiency. At the same time, a corrosive environment may be formed under the scale, accelerating the corrosion of the heat exchange tube. Utility Model Content

[0004] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. Specifically, the present invention mainly provides a silicon carbide heat exchanger to solve the technical problem raised in the above background technology that when water flows through the inside of the heat exchange tube, scale will form on the tube wall after heating, and the outer wall of the tube is easy to clean, but the inner wall of the tube is difficult to clean.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A silicon carbide heat exchanger comprises a heat exchange device, wherein the heat exchange device comprises a shell, a first pipe box and a second pipe box, and the first pipe box and the second pipe box are respectively located at two ends of the shell, a heat exchange inner core is arranged in the shell, and the heat exchange inner core comprises two parallel distributed end plates, and a plurality of heat exchange pipe fittings are arranged between the two end plates, each of the heat exchange pipe fittings comprises a silicon carbide heat exchange tube body, and each of the silicon carbide heat exchange tube body is provided with a first ceramic sheet and a second ceramic sheet constituting an inner lining.

[0007] Furthermore, a plurality of through holes are linearly arranged at equal intervals on the first ceramic sheet and the second ceramic sheet.

[0008] Furthermore, a plurality of clamping blocks are arranged at the side edge of the second ceramic sheet, each of the clamping blocks is clamped with a clamping slot, and the clamping slot is arranged at the side edge of the first ceramic sheet.

[0009] Furthermore, the folded edge portions of the first ceramic sheet and the second ceramic sheet are both provided with positioning holes, the positioning holes are cooperatively connected with positioning columns, and the positioning columns are provided at one end of the silicon carbide heat exchange tube body.

[0010] Furthermore, a plurality of baffles are arranged on the heat exchange pipe, and the baffles are staggeredly distributed.

[0011] Furthermore, the first pipe box and the second pipe box are respectively provided with a first water inlet and a first water outlet.

[0012] Furthermore, a second water inlet and a second water outlet are respectively provided on the upper and lower sides of the shell.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model provides a shell, a first pipe box, a second pipe box, an end plate, a baffle plate and a silicon carbide heat exchange tube body, so that after scale appears on the inner wall of the silicon carbide heat exchange tube, the staff can directly dismantle the lining composed of the first ceramic sheet and the second ceramic sheet for cleaning, without removing the heat exchange tube from the baffle plate, which is very convenient and avoids scale from hindering heat transfer and causing a decrease in heat exchange efficiency, and also protects the heat exchange tube and reduces corrosion. The utility model also has a simple structure and is convenient for installation and disassembly, and has certain practical value.

[0015] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure decomposition of the utility model;

[0018] Figure 3 This is a schematic diagram of the heat exchange inner core of the utility model;

[0019] Figure 4 This is a schematic diagram of the ceramic sheet structure of the utility model;

[0020] Figure 5 For the utility model Figure 3 Schematic diagram of the enlarged structure of area A.

[0021] In the figure: 1. heat exchange equipment; 11. shell; 111. second water inlet; 112. second water outlet; 12. first pipe box; 121. first water inlet; 13. second pipe box; 131. first water outlet; 2. heat exchange core; 21. end plate; 22. heat exchange pipe fittings; 221. silicon carbide heat exchange pipe body; 222. positioning column; 223. first ceramic sheet; 224. second ceramic sheet; 225. through hole; 226. block; 227. slot; 228. positioning hole; 23. baffle. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field of the present invention. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] Please refer to the attached Figure 1-5A silicon carbide heat exchanger includes a heat exchange device 1, wherein the heat exchange device 1 includes a shell 11, a first pipe box 12 and a second pipe box 13, and the first pipe box 12 and the second pipe box 13 are respectively located at two ends of the shell 11, and a heat exchange core 2 is arranged in the shell 11, and the heat exchange core 2 includes two parallel end plates 21, and a plurality of heat exchange pipes 22 are arranged between the two end plates 21, each of the heat exchange pipes 22 includes a silicon carbide heat exchange tube body 221, and each of the silicon carbide heat exchange tube body 221 is provided with a first ceramic sheet 223 and a second ceramic sheet 224 constituting an inner lining.

[0026] Through the above structure, when scale appears on the inner wall of the silicon carbide heat exchange tube, the staff can directly clean it without removing the heat exchange tube from the baffle 23. This is very convenient and prevents scale from hindering the transfer of heat and causing a decrease in heat exchange efficiency. It also protects the heat exchange tube and reduces corrosion. It has a simple structure and is easy to install and disassemble, and has certain practical value.

[0027] The specific operation is as follows: after scale appears on the inner wall of the silicon carbide heat exchange tube body 221, and the scale position is mostly at the through hole 225 on the ceramic sheet and on the ceramic sheet, the staff opens the first pipe box 12, and then directly pulls out the lining composed of the first ceramic sheet 223 and the second ceramic sheet 224 from the silicon carbide heat exchange tube body 221. During the pulling-out process, the through hole 225 is pulled, and the scale in the through hole 225 is separated from the inner wall of the silicon carbide heat exchange tube body 221, thereby cleaning the inner wall of the silicon carbide heat exchange tube body 221. Then, the first ceramic sheet 223 and the second ceramic sheet 224 are separated to facilitate cleaning of the inside of the ceramic sheet. After cleaning the inside and outside of the ceramic sheet, the lining composed of the first ceramic sheet 223 and the second ceramic sheet 224 is inserted into the silicon carbide heat exchange tube body 221.

[0028] Please refer to the attached Figure 2 and attached Figure 3 The heat exchange pipe 22 is provided with a plurality of baffles 23, and the baffles 23 are staggeredly distributed. The distribution of the baffles 23 realizes the control of the flow direction of water in the shell 11. The first pipe box 12 and the second pipe box 13 are respectively provided with a first water inlet 121 and a first water outlet 131. The cooperation of the first water inlet 121 and the first water outlet 131 realizes the introduction and export of water in the silicon carbide heat exchange pipe body 221. The upper and lower sides of the shell 11 are respectively provided with a second water inlet 111 and a second water outlet 112. The cooperation between the second water inlet 111 and the second water outlet 112 realizes the introduction and export of water in the shell 11.

[0029] Please refer to the attached Figure 4 and attached Figure 5The first ceramic sheet 223 and the second ceramic sheet 224 are provided with a plurality of through holes 225 at equal intervals and linearly. The through holes 225 are provided to facilitate heat transfer. At the same time, the scale formed on the inner wall of the silicon carbide heat exchange tube body 221 of the through holes 225 can be removed when the tube is pulled out. The side edge of the second ceramic sheet 224 is provided with a plurality of blocks 226. Each of the blocks 226 is connected with a slot 227. The slot 227 is provided at the side edge of the first ceramic sheet 223. The mutual cooperation between the first ceramic sheet 223 and the card slot 227 is realized to assemble the first ceramic sheet 223 and the second ceramic sheet 224 together, the folded edge parts of the first ceramic sheet 223 and the second ceramic sheet 224 are both provided with positioning holes 228, and the positioning holes 228 are connected with positioning columns 222, and the positioning columns 222 are arranged at one end of the silicon carbide heat exchange tube body 221. Through the mutual cooperation between the positioning columns 222 and the positioning holes 228, the ceramic sheets can be stably installed on the silicon carbide heat exchange tube body 221.

[0030] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A silicon carbide heat exchanger, comprising a heat exchange device (1), wherein the heat exchange device (1) comprises a shell (11), a first pipe box (12) and a second pipe box (13), wherein the first pipe box (12) and the second pipe box (13) are respectively located at two ends of the shell (11), characterized in that: A heat exchange inner core (2) is arranged in the shell (11), the heat exchange inner core (2) comprising two end plates (21) arranged in parallel, a plurality of heat exchange pipe fittings (22) being arranged between the two end plates (21), each of the heat exchange pipe fittings (22) comprising a silicon carbide heat exchange pipe body (221), and each of the silicon carbide heat exchange pipe bodies (221) being provided with a first ceramic sheet (223) and a second ceramic sheet (224) constituting an inner lining.

2. A silicon carbide heat exchanger according to claim 1, characterized in that: A plurality of through holes (225) are linearly arranged at equal intervals on the first ceramic sheet (223) and the second ceramic sheet (224).

3. A silicon carbide heat exchanger according to claim 2, characterized in that: A plurality of clamping blocks (226) are arranged at the side edge of the second ceramic sheet (224), each of the clamping blocks (226) is clamped with a clamping slot (227), and the clamping slot (227) is arranged at the side edge of the first ceramic sheet (223).

4. The silicon carbide heat exchanger according to claim 3, characterized in that: The folded edge portions of the first ceramic sheet (223) and the second ceramic sheet (224) are both provided with positioning holes (228), the positioning holes (228) are matched and connected with positioning columns (222), and the positioning columns (222) are provided at one end of the silicon carbide heat exchange tube body (221).

5. The silicon carbide heat exchanger according to claim 1, characterized in that: A plurality of baffles (23) are arranged on the heat exchange pipe (22), and the baffles (23) are distributed in a staggered manner.

6. The silicon carbide heat exchanger according to claim 1, characterized in that: The first pipe box (12) and the second pipe box (13) are respectively provided with a first water inlet (121) and a first water outlet (131).

7. The silicon carbide heat exchanger according to claim 1, characterized in that: A second water inlet (111) and a second water outlet (112) are respectively provided on the upper and lower sides of the shell (11).

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