Efficient heat exchange silicon carbide shell-and-tube heat exchanger

Abstract

The utility model relates to the technical field of silicon carbide shell-and-tube heat exchangers, and discloses an efficient heat exchange silicon carbide shell-and-tube heat exchanger which comprises a shell, two sets of fixing discs are connected in the shell in a sleeved mode, a plurality of sets of heat conduction pipes are connected in the fixing discs in a sleeved mode, and three sets of cleaning discs are connected to the surfaces of the heat conduction pipes in a sliding mode. The interior of the cleaning disc is fixedly connected with a telescopic assembly, and the two sides of the shell are fixedly connected with connecting flange plates. According to the efficient heat exchange silicon carbide shell-and-tube heat exchanger, through the arrangement of the telescopic assembly, when the heat exchanger operates, a driving motor is started, a threaded rod is driven to rotate in a threaded sleeve, then a cleaning disc is pushed to move in the shell, and water scale on the surface of a heat conduction pipe is scraped and cleaned through round holes in the cleaning disc; the situation that the heat conduction effect of the heat exchanger is reduced and normal operation is affected due to excessive scale in the heat exchanger is avoided, and the heat exchange efficiency of the heat exchanger is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon carbide tube-in-tube heat exchangers, in particular to a silicon carbide tube-in-tube heat exchanger with high heat exchange efficiency. Background Art

[0002] Heat exchanger is a device that transfers part of the heat of hot fluid to cold fluid, also known as heat exchanger. Heat exchanger plays an important role in chemical, petroleum, power, food and many other industrial production. In chemical production, heat exchanger can be used as heater, cooler, condenser, evaporator and reboiler, etc., and is widely used. Heat exchanger is an energy-saving device that realizes heat transfer between materials between two or more fluids at different temperatures. It transfers heat from a higher temperature fluid to a lower temperature fluid, so that the fluid temperature reaches the specified index of the process to meet the needs of process conditions. It is also one of the main equipment for improving energy utilization. Silicon carbide is a ceramic material with high temperature resistance, corrosion resistance and good thermal conductivity. The use of silicon carbide tubes in tube heat exchangers can provide efficient heat exchange performance. Therefore, a silicon carbide tube heat exchanger with efficient heat exchange is needed to facilitate the cleaning of scale inside the heat exchanger and increase the sealing effect.

[0003] A single-tube silicon carbide shell-and-tube heat exchanger that is easy to disassemble is disclosed in the publication number CN214537521U, which includes a shell, a plurality of silicon carbide heat exchange tubes and a support seat. Tube sheets are provided at both ends of the shell, and end covers are provided on the other side of the tube sheets. The joints between the shell and the tube sheets and between the tube sheets and the end covers are provided with first sealing rings. An outlet pipe is fixedly passed through the outer wall of one end cover, and an inlet pipe is fixedly passed through the outer wall of the other end cover. The utility model uses a clamping block under the cooperation of a spring to allow a plurality of baffles that are sleeved and fixed on a plurality of silicon carbide heat exchange tubes to be inserted only in one direction along one end of the shell, and a group of limit plates, a group of clamping blocks and a group of tube sheets cooperate with each other, so that the positions of the baffles and the plurality of silicon carbide heat exchange tubes inserted into the shell are kept fixed, so that the assembly and use can be effectively completed in cooperation with a group of end covers, making the later disassembly and maintenance of the silicon carbide heat exchange tubes and baffles more convenient and labor-saving.

[0004] However, the single-tube silicon carbide shell-and-tube heat exchanger that is easy to disassemble has the following disadvantages: when the heat exchanger is in operation, it is not easy to clean the scale inside the heat exchanger to avoid excessive internal scale, which causes the heat transfer effect of the heat exchanger to be reduced; when the heat exchanger is installed, the liquid inside the heat exchanger directly contacts the rubber ring, which is easy to cause corrosion and leakage, and reduce the sealing performance. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The technical problem solved by the utility model is to provide a silicon carbide shell and tube heat exchanger with high practicality, simple operation and relatively simple structure, which has high efficiency in heat exchange and solves the problem of inconvenience in cleaning scale inside the heat exchanger and increasing sealing performance raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above purpose, the utility model is implemented through the following technical solutions: a silicon carbide shell and tube heat exchanger with high efficiency heat exchange, including a shell, the interior of the shell is sleeved with two groups of fixed disks, the interior of the fixed disks is sleeved with several groups of heat conduction pipes, the surfaces of the heat conduction pipes are slidably connected with three groups of cleaning disks, the interior of the cleaning disks is fixedly connected with a telescopic assembly, both sides of the shell are fixedly connected with connecting flanges, the interior of the connecting flanges is sleeved with a sealing assembly, the telescopic assembly includes a threaded sleeve fixedly connected to the interior of the cleaning disk, the internal thread of the threaded sleeve is connected with a threaded rod, the threaded rod facilitates the movement of the cleaning disk, the sealing assembly includes a sealing steel ring sleeved with the interior of the connecting flange, both sides of the sealing steel ring are sleeved with rubber rings, the rubber rings facilitate increasing the sealing performance.

[0009] As a further solution of the utility model, the surfaces of the two groups of connecting flanges are threadedly connected with pipe caps, and the interior of one group of the pipe caps is fixedly connected with a partition plate, which is convenient for blocking and diverting flow.

[0010] As a further solution of the utility model, a water inlet pipe is connected through the top of the pipe cap, and a water outlet pipe is connected through the bottom of the pipe cap, and the water outlet pipe is convenient for discharging liquid.

[0011] As a further solution of the utility model, two groups of supports are fixedly connected to the bottom of the shell, and a number of stress blocks are fixedly connected to both sides of the supports, and the stress blocks are convenient for increasing stability.

[0012] As a further solution of the utility model, sliders are fixedly connected to both sides of the cleaning disk, and the inner wall of the shell is provided with a slide groove matched with the slide groove, which is convenient for sliding.

[0013] As a further solution of the utility model, one end of the threaded rod is fixedly connected to a driving motor, and a protective cover is fixedly connected to the surface of the driving motor, so that the protective cover is convenient for protecting the driving motor.

[0014] As a further solution of the utility model, a baffle is sleeved on the surface of the heat-conducting pipe, and the material of the heat-conducting pipe is silicon carbide material, so the heat-conducting pipe is convenient for heat exchange.

[0015] (III) Beneficial effects

[0016] The utility model provides a silicon carbide tube heat exchanger with high efficiency heat exchange, which has the following

[0017] Beneficial effects:

[0018] 1. The silicon carbide shell-and-tube heat exchanger with high heat exchange efficiency is provided with a telescopic component. When the heat exchanger is running, the driving motor is started to drive the threaded rod to rotate in the threaded sleeve, and then the cleaning disk is pushed to move in the shell, so that the circular holes on the cleaning disk scrape and clean the scale on the surface of the heat conduction tube, thereby achieving the effect of cleaning the scale inside the heat exchanger, avoiding excessive internal scale, resulting in reduced heat conduction effect of the heat exchanger, affecting normal operation, and improving the heat exchange efficiency of the heat exchanger.

[0019] 2. The silicon carbide shell-and-tube heat exchanger with high heat exchange efficiency has a sealing component. When installing the heat exchanger, the rubber ring is clamped in the sealing steel ring, and then the sealing steel ring is clamped in the connecting flange. The pipe cap and the connecting flange are tightened and fixed by threaded bolts, thereby achieving the effect of joint sealing, avoiding direct contact of the liquid inside the heat exchanger with the rubber ring to cause corrosion and leakage, and improving the sealing of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the housing structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the telescopic assembly structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the sealing component structure of the utility model.

[0025] In the figure: 1. Shell; 2. Fixed plate; 3. Heat conduction pipe; 4. Cleaning plate; 5. Telescopic assembly; 501. Threaded sleeve; 502. Threaded rod; 6. Connecting flange; 7. Sealing assembly; 701. Sealing steel ring; 702. Rubber ring; 8. Pipe cap; 9. Partition; 10. Water inlet pipe; 11. Water outlet pipe; 12. Support; 13. Stress block; 14. Slider; 15. Drive motor; 16. Protective cover; 17. Baffle. DETAILED DESCRIPTION

[0026] 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. 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.

[0027] See also Figures 1 to 5 The utility model provides a technical solution: a silicon carbide tube heat exchanger with high heat exchange efficiency, comprising a shell 1, two sets of fixed disks 2 are sleeved inside the shell 1, a plurality of heat pipes 3 are sleeved inside the fixed disks 2, three sets of cleaning disks 4 are slidably connected to the surface of the heat pipes 3, and a telescopic component 5 is fixedly connected inside the cleaning disks 4. Through the setting of the telescopic component 5, the effect of cleaning the scale inside the heat exchanger is achieved, and excessive scale inside is avoided, which causes the heat transfer effect of the heat exchanger to be reduced, affects the normal operation, and improves the heat exchange efficiency of the heat exchanger. Both sides of the shell 1 are fixed. A connecting flange 6 is connected, and a sealing assembly 7 is sleeved inside the connecting flange 6. The sealing assembly 7 is provided to achieve the effect of joint sealing, reduce the direct contact of the liquid inside the heat exchanger with the rubber ring 702, and reduce the corrosion leakage caused by the liquid inside the heat exchanger. The sealing performance of the heat exchanger is improved. The telescopic assembly 5 includes a threaded sleeve 501 fixedly connected to the inside of the cleaning disk 4, and the internal thread of the threaded sleeve 501 is connected to the threaded rod 502. The sealing assembly 7 includes a sealing steel ring 701 sleeved inside the connecting flange 6, and rubber rings 702 are sleeved on both sides of the sealing steel ring 701.

[0028] The surfaces of the two sets of connecting flanges 6 are both threadedly connected with pipe caps 8, and a partition plate 9 is fixedly connected inside one set of pipe caps 8. The partition plate 9 plays a role of blocking and guiding flow;

[0029] The top of the pipe cap 8 is connected to a water inlet pipe 10, and the bottom of the pipe cap 8 is connected to a water outlet pipe 11. The water outlet pipe 11 is provided to discharge liquid.

[0030] Two sets of supports 12 are fixedly connected to the bottom of the housing 1, and a plurality of stress blocks 13 are fixedly connected to both sides of the supports 12. The arrangement of the stress blocks 13 increases stability.

[0031] Slide blocks 14 are fixedly connected to both sides of the cleaning disc 4, and the inner wall of the housing 1 is provided with slide grooves adapted to the slide blocks 14, and the setting of the slide grooves facilitates sliding;

[0032] One end of the threaded rod 502 is fixedly connected to the driving motor 15, and a protective cover 16 is fixedly connected to the surface of the driving motor 15. The protective cover 16 protects the driving motor 15.

[0033] The surface of the heat-conducting pipe 3 is sleeved with a baffle 17 . The heat-conducting pipe 3 is made of silicon carbide. The arrangement of the heat-conducting pipe 3 facilitates heat exchange.

[0034] In the utility model, the working steps of the device are as follows:

[0035] Step 1: When the heat exchanger is running, start the drive motor 15 to drive the threaded rod 502 to rotate in the threaded sleeve 501;

[0036] Step 2: Push the cleaning disk 4 to move in the housing 1 so that the circular holes on the cleaning disk 4 scrape and clean the scale on the surface of the heat pipe 3;

[0037] The third step: when installing the heat exchanger, clamp the rubber ring 702 into the sealing steel ring 701, and then clamp the sealing steel ring 701 into the connecting flange 6, and tighten the pipe cap 8 and the connecting flange 6 with threaded bolts.

[0038] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0039] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A silicon carbide shell-and-tube heat exchanger with high heat exchange efficiency, comprising a shell (1), characterized in that: Two groups of fixed disks (2) are sleeved inside the shell (1), a plurality of groups of heat conducting pipes (3) are sleeved inside the fixed disks (2), three groups of cleaning disks (4) are slidably connected to the surfaces of the heat conducting pipes (3), a telescopic assembly (5) is fixedly connected inside the cleaning disks (4), both sides of the shell (1) are fixedly connected to connecting flanges (6), a sealing assembly (7) is sleeved inside the connecting flanges (6), the telescopic assembly (5) comprises a threaded sleeve (501) fixedly connected to the inside of the cleaning disk (4), the inside of the threaded sleeve (501) is threadedly connected to a threaded rod (502), and the sealing assembly (7) comprises a sealing steel ring (701) sleeved inside the connecting flange (6), and both sides of the sealing steel ring (701) are sleeved with rubber rings (702).

2. The silicon carbide shell-and-tube heat exchanger with high heat exchange efficiency according to claim 1, characterized in that: The surfaces of the two groups of connecting flanges (6) are both threadedly connected with pipe caps (8), and a partition plate (9) is fixedly connected inside one group of the pipe caps (8).

3. The silicon carbide shell-and-tube heat exchanger with high heat exchange efficiency according to claim 2, characterized in that: The top of the pipe cap (8) is connected through a water inlet pipe (10), and the bottom of the pipe cap (8) is connected through a water outlet pipe (11).

4. The silicon carbide shell-and-tube heat exchanger with high heat exchange efficiency according to claim 1, characterized in that: Two groups of supports (12) are fixedly connected to the bottom of the shell (1), and a plurality of stress blocks (13) are fixedly connected to both sides of the supports (12).

5. The silicon carbide shell-and-tube heat exchanger with high heat exchange efficiency according to claim 1, characterized in that: Slide blocks (14) are fixedly connected to both sides of the cleaning disk (4), and the inner wall of the housing (1) is provided with slide grooves matched with the slide blocks (14).

6. The silicon carbide shell-and-tube heat exchanger with high heat exchange efficiency according to claim 1, characterized in that: One end of the threaded rod (502) is fixedly connected to a driving motor (15), and a protective cover (16) is fixedly connected to the surface of the driving motor (15).

7. The silicon carbide shell-and-tube heat exchanger with high heat exchange efficiency according to claim 1, characterized in that: The surface of the heat-conducting pipe (3) is sleeved with a baffle (17), and the heat-conducting pipe (3) is made of silicon carbide.

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