Preheater heat exchange structure with telescopic structure

Abstract

The utility model relates to the technical field of pre-heaters, and discloses a pre-heater heat exchange structure with a telescopic structure, which comprises a pre-heater shell, the right side wall of the pre-heater shell is hermetically hinged with a shell cover, the left side of the top end of the pre-heater shell is provided with a first smoke port, and the right side of the bottom end of the pre-heater shell is provided with a second smoke port. By arranging the telescopic assembly and the mounting assembly, when the preheating pipe is replaced, the shell cover is opened, and the motor, the lead screw, the rear moving block, the guide column, the front moving block, the L-shaped column and the mounting disc are matched, so that the mounting disc moves in the preheater shell until the mounting disc moves to the outside of the preheater shell; and then through the matching between the mounting disc and the threaded opening, when one preheating pipe in a group of preheating pipes is replaced, the preheating pipe needing to be replaced can be taken out and replaced only by rotating the preheating pipe needing to be replaced on the threaded opening in the mounting disc.

Description

Technical Field

[0001] The utility model relates to the technical field of preheaters, in particular to a preheater heat exchange structure with a telescopic structure. Background Art

[0002] The gas preheater heats the coke oven gas from the blower to 60-80℃ indirectly through steam, and then the gas passes through the preheater from bottom to top, and the steam conducts convection heat exchange from top to bottom. The gas enters the saturator, and the hot gas evaporates the excess water in the saturator to maintain the water balance in the saturator. The gas preheater adopts a shell-and-tube heat exchanger, and the heat exchange tube has an inner diameter of 32mm. The heat exchange tube is a honeycomb-shaped tube bundle arranged along the gas flow direction. The heat exchange tube has a thin diameter, and the carbon steel material is easy to rust and has a rough surface. Impurities such as tar and tar residue in the coke oven gas are deposited and agglomerated on the inner wall of the tube. Such impurities are easy to lose water and become thicker, and gradually accumulate and carbonize to block the pipeline, resulting in poor gas flow, resulting in excessive resistance of the preheater, exceeding 2000Pa (under normal circumstances, the resistance is below 500Pa), and excessive load on the fan that transports the coke oven gas.

[0003] In the existing preheater heat exchange structure, when the preheating tube inside is blocked or damaged, it is not convenient to replace it partially. The general operation is to replace the entire preheater, which leads to waste of other available preheating tubes inside. Therefore, those skilled in the art provide a preheater heat exchange structure with a telescopic structure to solve the problems raised in the above background technology. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a preheater heat exchange structure with a telescopic structure, which has the advantages of being replaceable and solves the above-mentioned technical problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a preheater heat exchange structure with a telescopic structure, comprising a preheater shell, a right side wall of the preheater shell is sealed and hinged with a shell cover, a first smoke outlet is arranged on the left side of the top end of the preheater shell, a second smoke outlet is arranged on the right side of the bottom end of the preheater shell, a telescopic component is arranged on the inner surface of the preheater shell, and a group of preheating tubes are installed inside the preheater shell through the installation component;

[0008] The telescopic assembly includes: a motor is fixedly arranged at the rear of the left side wall of the preheater shell, the output end of the motor penetrates into the interior of the preheater shell and is fixedly connected with a screw rod, one end of the screw rod is rotatably connected to the inner right side wall of the preheater shell through a bearing, the outer surface of the screw rod is threadedly connected with a rear moving block, a guide column is fixedly arranged at the inner front end of the preheater shell, a front moving block is sleeved on the outside of the guide column, and L-shaped columns are fixedly connected to adjacent end walls of the rear moving block and the front moving block.

[0009] As a preferred technical solution of the utility model, a threaded hole matching the outer surface of the screw rod is provided on the rear moving block.

[0010] As a preferred technical solution of the utility model, the front moving block is provided with a through hole which matches the outer surface of the guide column.

[0011] As a preferred technical solution of the utility model, the installation assembly includes: a mounting plate is arranged inside the preheater shell, and a group of threaded openings are opened on the mounting plate.

[0012] As a preferred technical solution of the present utility model, one end of the two L-shaped columns is fixedly connected to the left side wall of the mounting plate.

[0013] As a preferred technical solution of the utility model, a group of the threaded openings are arranged at equal intervals, and the outer surface of a group of the preheating tubes is provided with external threads that are mutually compatible with the group of threaded openings.

[0014] Compared with the prior art, the utility model provides a preheater heat exchange structure with a telescopic structure, which has the following beneficial effects:

[0015] The utility model provides a telescopic component and a mounting component. When replacing the preheating tube, the shell cover is opened, and the mounting disk is moved inside the preheater shell through the cooperation between the motor, the screw rod, the rear moving block, the guide column, the front moving block, the L-shaped column and the mounting disk until the mounting disk is moved to the outside of the preheater shell. Then, through the cooperation between the mounting disk and the threaded opening, when replacing one of the preheating tubes in a group of preheating tubes, it is only necessary to rotate the threaded opening on the mounting disk of the preheating tube to be replaced, so that the preheating tube to be replaced can be taken out and replaced. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a schematic diagram of the structure inside the shell of the preheater of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the connection between the mounting plate and the threaded port of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the connection between the L-shaped column and the mounting plate of the utility model.

[0020] Among them: 1. preheater shell; 2. shell cover; 3. first smoke outlet; 4. second smoke outlet; 5. telescopic assembly; 501. motor; 502. screw rod; 503. rear moving block; 504. guide column; 505. front moving block; 506. L-shaped column; 6. installation assembly; 601. installation plate; 602. threaded port; 7. preheating tube. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1-4 A preheater heat exchange structure with a telescopic structure comprises a preheater shell 1, a shell cover 2 is sealed and hingedly connected to the right side wall of the preheater shell 1, a first smoke outlet 3 is arranged on the left side of the top end of the preheater shell 1, a second smoke outlet 4 is arranged on the right side of the bottom end of the preheater shell 1, a telescopic component 5 is arranged on the inner surface of the preheater shell 1, and a group of preheating tubes 7 are installed inside the preheater shell 1 through an installation component 6;

[0025] The telescopic assembly 5 includes: a motor 501 is fixedly arranged at the rear of the left side wall of the preheater shell 1, the output end of the motor 501 penetrates into the interior of the preheater shell 1 and is fixedly connected with a screw rod 502, one end of the screw rod 502 is rotatably connected to the inner right side wall of the preheater shell 1 through a bearing, the outer surface of the screw rod 502 is threadedly connected with a rear moving block 503, a guide column 504 is fixedly arranged at the inner front end of the preheater shell 1, a front moving block 505 is sleeved on the outer side of the guide column 504, and L-shaped columns 506 are fixedly connected to the adjacent end walls of the rear moving block 503 and the front moving block 505; a threaded hole matching the outer surface of the screw rod 502 is opened on the rear moving block 503; a through hole matching the outer surface of the guide column 504 is opened on the front moving block 505.

[0026] Furthermore, when replacing the preheating tube 7, the shell cover 2 is opened, and the motor 501 is started to drive the screw rod 502 to rotate in the forward direction, and the front moving block 505 moves outside the screw rod 502. After the matching connection with the mounting plate 601, the front moving block 505 moves outside the guide column 504, so that the mounting plate 601 moves inside the preheater shell 1, and the mounting plate 601 moves to the outside of the preheater shell 1, thereby realizing replacement.

[0027] The mounting assembly 6 includes: a mounting plate 601 is arranged inside the preheater housing 1, and a group of threaded openings 602 are opened on the mounting plate 601; one end of two L-shaped columns 506 are fixedly connected to the left side wall of the mounting plate 601; the group of threaded openings 602 are arranged at equal intervals, and the outer surface of a group of preheating tubes 7 is provided with external threads that are mutually compatible with the group of threaded openings 602.

[0028] Furthermore, when replacing one of the preheating tubes 7 in a group of preheating tubes 7 , it is only necessary to rotate the threaded opening 602 of the preheating tube 7 to be replaced on the mounting plate 601 to remove the preheating tube 7 to be replaced from the mounting plate 601 .

[0029] Working principle: when replacing the preheating tube 7, open the shell cover 2, start the motor 501 to drive the screw rod 502 to rotate forward, and the front moving block 505 moves outside the screw rod 502. After the matching connection of the mounting plate 601, the front moving block 505 moves outside the guide column 504, so that the mounting plate 601 moves inside the preheater shell 1, and the mounting plate 601 moves to the outside of the preheater shell 1, so as to realize replacement. When replacing one of the preheating tubes 7 in a group of preheating tubes 7, it is only necessary to rotate the threaded opening 602 of the preheating tube 7 to be replaced on the mounting plate 601, and the preheating tube 7 to be replaced can be taken out from the mounting plate 601.

[0030] 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 preheater heat exchange structure with a telescopic structure, comprising a preheater shell (1), characterized in that: The right side wall of the preheater shell (1) is sealed and hinged with a shell cover (2); a first smoke outlet (3) is arranged on the left side of the top end of the preheater shell (1); a second smoke outlet (4) is arranged on the right side of the bottom end of the preheater shell (1); a telescopic component (5) is arranged on the inner surface of the preheater shell (1); and a group of preheating tubes (7) are installed inside the preheater shell (1) through an installation component (6); The telescopic assembly (5) comprises: a motor (501) is fixedly arranged at the rear of the left side wall of the preheater housing (1); the output end of the motor (501) penetrates into the interior of the preheater housing (1) and is fixedly connected to a screw rod (502); one end of the screw rod (502) is rotatably connected to the right side wall of the interior of the preheater housing (1) via a bearing; the outer surface of the screw rod (502) is threadedly connected to a rear moving block (503); a guide column (504) is fixedly arranged at the front end of the interior of the preheater housing (1); the outer portion of the guide column (504) is sleeved with a front moving block (505); and L-shaped columns (506) are fixedly connected to adjacent end walls of the rear moving block (503) and the front moving block (505).

2. The preheater heat exchange structure with a telescopic structure according to claim 1, characterized in that: The rear moving block (503) is provided with a threaded hole that matches the outer surface of the screw rod (502).

3. The preheater heat exchange structure with a telescopic structure according to claim 1, characterized in that: The front moving block (505) is provided with a through hole which matches the outer surface of the guide column (504).

4. The preheater heat exchange structure with a telescopic structure according to claim 1, characterized in that: The mounting assembly (6) comprises: a mounting plate (601) is arranged inside the preheater housing (1), and a group of threaded openings (602) are opened on the mounting plate (601).

5. The preheater heat exchange structure with a telescopic structure according to claim 4, characterized in that: One end of each of the two L-shaped columns (506) is fixedly connected to the left side wall of the mounting plate (601).

6. The preheater heat exchange structure with a telescopic structure according to claim 4, characterized in that: A group of the threaded openings (602) are arranged at equal intervals, and the outer surface of a group of the preheating tubes (7) is provided with external threads that are compatible with the group of threaded openings (602).

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