Anode protection acid cooler

Abstract

The utility model provides an anodic protection acid cooler which comprises a horizontally arranged cylinder body, a plurality of baffle plates are arranged in the cylinder body, two ends of the cylinder body are respectively connected with a first sealing head and a second sealing head, a main negative plate is further connected in the cylinder body, and the main negative plate is of a grid structure; a tube plate is arranged between the cylinder body and the first sealing head and is fixedly connected with the first sealing head, and the tube plate is further fixedly connected with a partition plate to divide the first sealing head into a first chamber and a second chamber which are arranged up and down; a tube box is further arranged between the barrel and the second end socket, a first heat exchange tube and a second heat exchange tube are further connected between the tube box and the tube plate, the first heat exchange tube is communicated with the first cavity and the second end socket, the second heat exchange tube is communicated with the second cavity and the second end socket, and the first heat exchange tube and the second heat exchange tube transversely extend and penetrate through the grating structure and the baffle plate respectively. The heat exchanger solves the problem that in the prior art, shell pass fluid induces the heat exchange tube to vibrate, so that the heat exchange tube and the baffle plate move relatively, and the heat exchange tube is damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of acid coolers, in particular to an anode protection acid cooler. Background Art

[0002] In the petrochemical production process, sulfuric acid is one of the important materials. In the production process, a cooler is needed to cool sulfuric acid. Since sulfuric acid is highly corrosive, an anodic protection acid cooler is generally used. The anodic protection acid cooler has the advantages of good corrosion resistance, long service life, low pollution, and good working conditions, and has been widely used in domestic and foreign sulfuric acid devices. In the prior art, the anode of the anodic protection control system is connected to the shell, and the cathode penetrates the pipe box and is inserted into the shell. The anodic current is passed on the protected metal equipment to form a layer of a passivation film with strong corrosion resistance on its surface, thereby realizing the corrosion protection of the equipment. The required power supply, instrument, reference electrode, main electrode and the protected shell and tube cooler constitute the anodic protection system. The structure of the anodic protection acid cooler is a classic fixed shell and tube type, in which a baffle is provided. The heat exchange tube needs to pass through the baffle. With the increase of the circulating acid amount, the equipment specifications continue to increase, and the shell-side fluid will induce the heat exchange tube to vibrate. When the equipment vibrates, the heat exchange tube and the baffle move relative to each other to produce wear or even cutting (sawing), resulting in the gradual thinning or even wear of the tube wall. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides an anode protection acid cooler, which solves the problem in the prior art that shell-side fluid induces vibration of heat exchange tubes, resulting in relative movement between the heat exchange tubes and baffles and causing damage to the heat exchange tubes.

[0004] According to an embodiment of the utility model, an anode protection acid cooler includes a horizontally arranged cylinder, a plurality of baffles are arranged in the cylinder, the two ends of the cylinder are respectively connected to a first head and a second head, a main negative plate is also connected in the cylinder, and the main negative plate is a grid structure; a tube sheet is arranged between the cylinder and the first head, and the tube sheet is fixedly connected to the first head, and the tube sheet is also fixedly connected to a partition to separate the first head into a first chamber and a second chamber in an upper and lower position; a tube box is also arranged between the cylinder and the second head, and a first heat exchange tube and a second heat exchange tube are also connected between the tube box and the tube sheet, the first heat exchange tube connects the first chamber and the second head, the second heat exchange tube connects the second chamber and the second head, and the first heat exchange tube and the second heat exchange tube extend laterally and pass through the grid structure and the baffles respectively.

[0005] In the above embodiment, the main negative plate is directly located in the cylinder and is set as a grid structure, which has an auxiliary fixing effect on the first heat exchange tube and the second heat exchange tube, making the first heat exchange tube and the second heat exchange tube more stable and avoiding the sawing effect caused by vibration, thereby solving the problem in the prior art that the shell-side fluid induces vibration of the heat exchange tube, causing relative movement between the heat exchange tube and the baffle, resulting in damage to the heat exchange tube.

[0006] Furthermore, the cylinder body is also connected to a connecting cylinder in communication therewith, and the main negative plate also includes a connecting column connected therewith and connected to the connecting cylinder.

[0007] Furthermore, the grid structure includes a plurality of grid bars interwoven with each other, and the grid bars enclose a plurality of through frames, and the first heat exchange tube and the second heat exchange tube pass through one of the through frames respectively.

[0008] Furthermore, a water inlet pipe and a water outlet pipe communicating with the first chamber and the second chamber are respectively fixedly connected to the first end cover.

[0009] Furthermore, both ends of the cylinder are respectively fixedly connected with an acid inlet pipe and an acid outlet pipe communicating therewith.

[0010] Furthermore, the cylinder is also fixedly connected with a sewage discharge pipe communicating therewith.

[0011] Furthermore, a first connecting ring is fixedly connected to one end of the cylinder body close to the first end cap, a second connecting ring is fixedly connected to the first end cap, and the first connecting ring and the second connecting ring are connected by bolts.

[0012] Furthermore, the pipe box includes a mounting plate fixedly connected to the cylinder body, and a mounting cylinder capable of abutting against the mounting plate. A third connecting ring is also fixedly connected to one end of the cylinder body close to the second head. A fourth connecting ring is fixedly connected to the second head. The third connecting ring and the fourth connecting ring are connected by bolts and a clamping ring is clamped therebetween. The clamping ring presses the mounting cylinder and the mounting plate tightly. The first heat exchange tube and the second heat exchange tube pass through the mounting plate and the mounting cylinder and are connected to the second head.

[0013] Furthermore, the first heat exchange tube and the second heat exchange tube are both threadedly connected to the tube sheet and the mounting plate.

[0014] Furthermore, the clamping ring is also fixedly connected to a resist tube and a pressure ring located inside the ring. A first support platform is recessed in the inner wall of the tube, and the resist tube can abut against the first support platform. A second support platform is recessed in the outer edge of the mounting tube, and the pressure ring can abut against the second support platform.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The connection method between the first heat exchange tube and the second heat exchange tube and the baffle is similar to that in the prior art, while the main negative plate is directly located in the cylinder, and a grid structure is provided to support and fix the first heat exchange tube and the second heat exchange tube, so that the first heat exchange tube and the second heat exchange tube are more stable and avoid sawing caused by vibration, thereby solving the problem in the prior art that the shell-side fluid induces vibration of the heat exchange tube, causing relative movement between the heat exchange tube and the baffle, resulting in damage to the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0018] Figure 2 It is a partial enlarged schematic diagram of the grid structure of an embodiment of the utility model;

[0019] Figure 3 for Figure 1 A schematic diagram of the enlarged local structure at center A;

[0020] In the above drawings:

[0021] Cylinder body 1, baffle 2, first head 3, second head 4, main cathode plate 5, tube sheet 6, partition 7, first chamber 8, second chamber 9, tube box 10, first heat exchange tube 11, second heat exchange tube 12, grid bar 13, through frame 14, connecting tube 15, connecting column 16, water inlet pipe 17, water outlet pipe 18, acid inlet pipe 19, acid outlet pipe 20, sewage pipe 21, first connecting ring 22, second connecting ring 23, mounting plate 24, mounting tube 25, third connecting ring 26, fourth connecting ring 27, clamping ring 28, push tube 29, pressing ring 30. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In an exemplary embodiment, Figure 1-3As shown, this embodiment provides an anode protection acid cooler, which includes a horizontally arranged cylinder 1, a plurality of baffles 2 are arranged in the cylinder 1, the two ends of the cylinder 1 are respectively connected to a first head 3 and a second head 4, and the cylinder 1 is also connected to a main negative plate 5, the main negative plate 5 is a grid structure; a tube sheet 6 is arranged between the cylinder 1 and the first head 3, and the tube sheet 6 is fixedly connected to the first head 3, and the tube sheet 6 is also fixedly connected to a partition 7 to separate the first head 3 into a first chamber 8 and a second chamber 9 in an upper and lower manner; a pipe box 10 is also arranged between the cylinder 1 and the second head 4, and a first heat exchange tube 11 and a second heat exchange tube 12 are also connected between the tube box 10 and the tube sheet 6, the first heat exchange tube 11 is connected to the first chamber 8 and the second head 4, the second heat exchange tube 12 is connected to the second chamber 9 and the second head 4, and the first heat exchange tube 11 and the second heat exchange tube 12 extend laterally and pass through the grid structure and the baffle 2 respectively.

[0025] In the above embodiment, the baffle 2 and the first heat exchange tube 11 and the second heat exchange tube 12 are similar to those in the prior art, except that the tube box 10 in the present solution is not provided with a cathode, but the main cathode plate 5 (i.e., the cathode) is directly located in the cylinder 1 and is provided with a grid structure for the first heat exchange tube 11 and the second heat exchange tube 12 to pass through, which has an auxiliary fixing effect on the first heat exchange tube 11 and the second heat exchange tube 12, making the first heat exchange tube 11 and the second heat exchange tube 12 more stable, and avoiding the sawing effect caused by vibration, thereby solving the problem in the prior art that the shell-side fluid induces the vibration of the heat exchange tube, causing the relative movement of the heat exchange tube and the baffle 2, resulting in damage to the heat exchange tube;

[0026] More specifically, in this solution, when the main cathode plate 5 needs to be maintained, the first heat exchange tube 11 and the second heat exchange tube 12 are pulled out through the tube box 10, and then the main cathode plate 5 can be inspected and replaced, which is very convenient;

[0027] In more detail, the grid structure includes a plurality of grid bars 13 interwoven with each other, and the grid bars 13 are combined to form a plurality of through frames 14, the first heat exchange tube 11 and the second heat exchange tube 12 respectively pass through one of the through frames 14, and the grid bars 13 are attached to the tube wall of the first heat exchange tube 11 or the second heat exchange tube 12, which effectively protects the equipment from corrosion. According to the increase in the space and length of the cylinder 1, a plurality of main cathode plates 5 can be appropriately arranged to better play a comprehensive anode protection role.

[0028] like Figure 1-3As shown, in a further exemplary embodiment, a connecting tube 15 is connected to the cylinder body 1, and the main negative plate 5 also includes a connecting column 16 connected to it and connected to the connecting tube 15. One connecting tube 15 is connected to a connecting column 16 and a corresponding main negative plate 5 to facilitate wiring (external wiring can be connected to the connecting column 16). At the same time, the connecting column 16 and the main negative plate 5 and the connecting column 16 and the connecting tube 15 can be arranged to be connected in a detachable manner, so that the main negative plate 5 can be easily repaired, such as by being arranged in a threaded connection.

[0029] like Figure 1-3 As shown, in a more detailed exemplary scheme, the first head 3 is also fixedly connected with a water inlet pipe 17 and a water outlet pipe 18 connected with the first chamber 8 and the second chamber 9, respectively. The two ends of the cylinder 1 are also fixedly connected with an acid inlet pipe 19 and an acid outlet pipe 20 connected thereto, respectively. The water inlet pipe 17 introduces cooling water, enters the first chamber 8, flows through the first heat exchange pipe 11, then enters the second head 4, and then flows through the second heat exchange pipe 12 to the second chamber 9, and is finally discharged from the water outlet pipe 18. Sulfuric acid is introduced into the cylinder 1 through the acid inlet pipe 19 and exchanges heat with the cooling water in the first heat exchange pipe 11 and the second heat exchange pipe 12, and is finally discharged from the acid outlet pipe 20 to complete cooling. In order to facilitate cleaning and maintenance of the cylinder 1, a sewage pipe 21 connected thereto is also fixedly connected to the cylinder 1.

[0030] like Figure 1-3As shown, in a further exemplary scheme, the end of the cylinder 1 close to the first head 3 is fixedly connected with a first connecting ring 22, the first head 3 is fixedly connected with a second connecting ring 23, the first connecting ring 22 and the second connecting ring 23 are connected by bolts, so that the connection between the first head 3 and the cylinder 1 is realized, and the tube sheet 6 can be fixed on the first head 3; in more detail, the tube box 10 includes a mounting plate 24 fixedly connected to the cylinder 1, and a mounting cylinder 25 that can abut against the mounting plate 24, the end of the cylinder 1 close to the second head 4 is also fixedly connected with a third connecting ring 26, the second head 4 is fixedly connected with a fourth connecting ring 27, and the third connecting ring 26 and the fourth connecting ring 27 are connected by bolts and a clamping ring 28 is sandwiched between the two, the clamping ring 28 presses the mounting cylinder 25 and the mounting plate 24 tightly, the first heat exchange tube 11 and the second heat exchange tube 12 passes through the mounting plate 24 and the mounting cylinder 25 to be connected with the second head 4, the first heat exchange tube 11 and the second heat exchange tube 12 are both threadedly connected to the tube sheet 6 and the mounting plate 24, and the first heat exchange tube 11 and the second heat exchange tube 12 can be passed through the mounting cylinder 25, that is, the mounting cylinder 25 is provided with a hole whose inner diameter is larger than their outer diameter. When disassembling the first heat exchange tube 11 and the second heat exchange tube 12, first disassemble the third connecting ring 26 and the fourth connecting ring 27, remove the second head 4, and then remove the clamping ring 28 and the mounting cylinder 25, and then rotate the first heat exchange tube 11 and the second heat exchange tube 12 to take them out. At the same time, one end of the first head 3 is also disassembled, and the internal main negative plate 5 can be entered through one end of the first head 3 for inspection and replacement (the baffle 2 is similar to the prior art and can also be disassembled and inspected and replaced together).

[0031] like Figure 1-3 As shown, in a more specific exemplary embodiment, the clamping ring 28 is also fixedly connected to a resist cylinder 29 and a compression ring 30 located inside the ring. A first support platform is recessed in the inner wall of the cylinder body 1, and the resist cylinder 29 can abut against the first support platform. A second support platform is recessed in the outer edge of the mounting cylinder 25, and the compression ring 30 can abut against the second support platform. In this way, through the connection between the third connecting ring 26 and the fourth connecting ring 27, the compression ring 30 on the clamping ring 28 is placed on the second support platform, and the resist cylinder 29 is placed on the first support platform, thereby fixing the mounting cylinder 25 and the mounting plate 24 to achieve the installation of the pipe box 10.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An anode protection acid cooler, characterized in that: It comprises a horizontally arranged cylinder, wherein a plurality of baffles are arranged in the cylinder, wherein the two ends of the cylinder are respectively connected to a first head and a second head, and the cylinder is also connected to a main negative plate, wherein the main negative plate is a grid structure; a tube sheet is arranged between the cylinder and the first head, and the tube sheet is fixedly connected to the first head, and the tube sheet is also fixedly connected to a partition to separate the first head into a first chamber and a second chamber in an upper and lower position; a tube box is also arranged between the cylinder and the second head, and a first heat exchange tube and a second heat exchange tube are also connected between the tube box and the tube sheet, the first heat exchange tube connects the first chamber and the second head, the second heat exchange tube connects the second chamber and the second head, and the first heat exchange tube and the second heat exchange tube extend laterally and pass through the grid structure and the baffles respectively.

2. The anode protection acid cooler according to claim 1, characterized in that: The cylinder body is also connected to a connecting cylinder in communication therewith, and the main negative plate further includes a connecting column connected therewith and to the connecting cylinder.

3. The anode protection acid cooler according to claim 1, characterized in that: The grid structure includes a plurality of grid bars interwoven with each other, and the grid bars are combined to form a plurality of through frames, and the first heat exchange tube and the second heat exchange tube respectively pass through one of the through frames.

4. The anode protection acid cooler according to claim 1, characterized in that: The first end cap is also fixedly connected with a water inlet pipe and a water outlet pipe communicating with the first chamber and the second chamber respectively.

5. The anode protection acid cooler according to claim 1, characterized in that: The two ends of the cylinder are also fixedly connected with an acid inlet pipe and an acid outlet pipe communicated therewith.

6. The anode protection acid cooler according to claim 1, characterized in that: The cylinder is also fixedly connected with a sewage discharge pipe communicated with the cylinder.

7. The anode protection acid cooler according to claim 1, characterized in that: A first connecting ring is fixedly connected to one end of the cylinder close to the first end cap, and a second connecting ring is fixedly connected to the first end cap. The first connecting ring and the second connecting ring are connected by bolts.

8. The anode protection acid cooler according to any one of claims 1 to 7, characterized in that: The pipe box includes a mounting plate fixedly connected to the cylinder body, and a mounting cylinder capable of abutting against the mounting plate. A third connecting ring is also fixedly connected to one end of the cylinder body close to the second head. A fourth connecting ring is fixedly connected to the second head. The third connecting ring and the fourth connecting ring are connected by bolts and a clamping ring is clamped therebetween. The clamping ring presses the mounting cylinder and the mounting plate tightly. The first heat exchange tube and the second heat exchange tube pass through the mounting plate and the mounting cylinder and are connected to the second head.

9. The anode protection acid cooler according to claim 8, characterized in that: The first heat exchange tube and the second heat exchange tube are both threadedly connected to the tube sheet and the mounting plate.

10. The anode protection acid cooler according to claim 8, characterized in that: The clamping ring is also fixedly connected to a resisting tube and a pressure ring located inside the ring. A first support platform is recessed in the inner wall of the cylinder, and the resisting tube can abut against the first support platform. A second support platform is recessed in the outer edge of the mounting tube, and the pressure ring can abut against the second support platform.

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