Flue gas waste heat recovery heat exchange tube panel access door assembly

Abstract

The utility model discloses a flue gas waste heat recovery heat exchange tube panel access door assembly which comprises a heat exchange box, a heat exchange tube panel is arranged in an inner cavity of the heat exchange box, the heat exchange box is provided with an inlet and outlet pipeline communicated with the inner cavity of the heat exchange box, and the inlet and outlet pipeline is provided with an access door in an opening and closing mode. The access door further comprises a rotating support rotationally connected with the side wall of the inlet and outlet pipeline, the access door is connected with the rotating support, and a locking assembly used for locking the access door to a closing position is arranged between the rotating support and the inlet and outlet pipeline. The access door assembly for the flue gas waste heat recovery heat exchange tube panel is reasonable in design, and an operator can conveniently enter the heat exchange box to carry out operations such as ash removal and overhaul on the heat exchange tube panel.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas waste heat recovery, in particular to a flue gas waste heat recovery heat exchange tube screen inspection door component. Background Art

[0002] Flue gas is the main way for general energy-consuming equipment to waste energy. With the continuous development of energy-saving work, people use some equipment to recover flue gas waste heat in order to achieve the purpose of energy saving and emission reduction. Flue gas waste heat recovery equipment mainly converts the heat carried by flue gas into usable heat through some kind of heat exchange method.

[0003] A common heat conversion method is to absorb the heat of high-temperature flue gas through the heat exchange tube screen to raise the temperature of the water in the heat exchange tube, thereby reducing the exhaust temperature of the flue gas, saving energy, and improving efficiency. It is widely used in industrial production processes.

[0004] However, when the heat exchange tube screen needs to be cleaned or damaged and needs to be repaired, it is inconvenient to enter the heat exchange box. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects in the prior art and provide a flue gas waste heat recovery heat exchange tube panel maintenance door assembly, which is convenient for operators to enter the heat exchange box to clean and repair the heat exchange tube panel.

[0006] In order to achieve the above-mentioned technical effect, the technical solution of the utility model is: a flue gas waste heat recovery heat exchange tube panel inspection door assembly, comprising a heat exchange box, a heat exchange tube panel is arranged in the inner cavity of the heat exchange box, the heat exchange box is provided with inlet and outlet pipes communicating with its inner cavity, and the inlet and outlet pipes are opened and closed with an inspection door; it also includes a rotating bracket rotatably connected to the side wall of the inlet and outlet pipes, the inspection door is connected to the rotating bracket, and a locking assembly for locking the inspection door in a closed position is arranged between the rotating bracket and the inlet and outlet pipes.

[0007] The preferred technical solution is that the locking assembly includes a locking screw connected to the side wall of the inlet and outlet pipes, a locking nut threadedly connected to the locking screw, the rotating bracket is provided with a gap for the locking screw to pass through, and the locking nut is arranged to abut against the outer surface of the rotating bracket.

[0008] A preferred technical solution is that the locking screw is rotatably connected to the inlet and outlet pipes, and the axial centerline direction of the rotation axis of the locking screw is perpendicular to the axial centerline direction of the inlet and outlet pipes.

[0009] A preferred technical solution is that a handle is fixedly provided on the side wall of the locking nut to facilitate its rotation.

[0010] The preferred technical solution is that the inspection door is slidably connected to the rotating bracket, the sliding direction of the inspection door is parallel to the axial direction of the inlet and outlet pipes, and the inspection door has two working positions: in the first working position, the inspection door is sealed and matched with the inlet and outlet pipes; in the second working position, the inspection door is separated from the inlet and outlet pipes.

[0011] The preferred technical solution is that an adjusting screw is rotatably provided on the outer surface of the inspection door, an adjusting nut is threadedly connected to the adjusting screw, the adjusting screw is passed through the rotating bracket, and the adjusting nut is disposed against the outer surface of the rotating bracket.

[0012] A preferred technical solution is that the rotating bracket is provided with a limiting component for pressing the adjusting nut against the rotating bracket.

[0013] A preferred technical solution is that the limit assembly includes a limit block fixedly connected to the rotating bracket, the limit block is provided with an abutment surface abutting against the adjusting nut, and the abutment surface is rollingly provided with a plurality of balls rollingly matched with the adjusting nut.

[0014] A preferred technical solution is that the inspection door is fixedly provided with a sliding rod, the axis direction of the sliding rod is parallel to the axis direction of the adjusting screw, and the rotating bracket is provided with a sliding hole slidably connected to the sliding rod.

[0015] A preferred technical solution is that the heat exchange box is provided with a plurality of reinforcing ribs.

[0016] The advantages and beneficial effects of the utility model are that the structure of the flue gas waste heat recovery heat exchange tube screen inspection door assembly of the utility model is reasonable. By setting the inlet and outlet pipes and the inspection door that opens and closes in coordination with them, it is convenient for the operator to enter the heat exchange box to clean and inspect the heat exchange tube screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a flue gas waste heat recovery heat exchange tube panel inspection door assembly of the utility model;

[0018] Figure 2 It is an enlarged schematic diagram of the locked state of the inspection door;

[0019] Figure 3 yes Figure 2 Explosion diagram of

[0020] Figure 4 It is an enlarged schematic diagram of the maintenance door in the open state;

[0021] Figure 5 is a schematic diagram of the structure of the rotating bracket;

[0022] In the figure: 1. heat exchange box; 11. inlet and outlet pipes; 12. reinforcing ribs; 2. inspection door; 21. adjusting screw; 22. sliding rod; 3. rotating bracket; 31. gap; 32. sliding hole; 4. locking screw; 5. locking nut; 51. handle; 6. adjusting nut; 7. limit block; 71. ball bearing. DETAILED DESCRIPTION

[0023] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "horizontal", "vertical", "top", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] Example

[0026] like Figure 1-5 As shown, the flue gas waste heat recovery heat exchange tube panel inspection door assembly of the embodiment includes a heat exchange box 1, a heat exchange tube panel is arranged in the inner cavity of the heat exchange box 1, the heat exchange box 1 is provided with an inlet and outlet pipe 11 communicating with the inner cavity thereof, and the inlet and outlet pipe 11 is opened and closed with an inspection door 2; it also includes a rotating bracket 3 rotatably connected to the side wall of the inlet and outlet pipe 11, the inspection door 2 is connected to the rotating bracket 3, and a locking assembly for locking the inspection door 2 in a closed position is arranged between the rotating bracket 3 and the inlet and outlet pipe 11.

[0027] With such a design, the inspection door 2 is connected to the rotating bracket 3, and the rotation of the rotating bracket 3 drives the opening and closing of the inspection door 2. The locking assembly can lock the position of the rotating bracket 3, thereby closing the inspection door 2 and the inlet and outlet pipes 11.

[0028] Specifically, the locking assembly includes a locking screw 4 connected to the side wall of the inlet and outlet pipe 11, and a locking nut 5 threadedly connected to the locking screw 4. The rotating bracket 3 is provided with a gap 31 for the locking screw 4 to pass through, and the locking nut 5 is arranged to abut against the outer surface of the rotating bracket 3.

[0029] With such a design, the rotating bracket 3 is fixed in position by the locking nut 5 , thereby achieving the purpose of closing the inspection door 2 .

[0030] Specifically, the locking screw 4 is rotatably connected to the inlet and outlet pipe 11 , and the axis centerline direction of the rotation axis of the locking screw 4 is perpendicular to the axis centerline direction of the inlet and outlet pipe 11 .

[0031] With such a design, when the inspection door 2 is opened, the locking screw 4 can be rotated to the side wall of the inlet and outlet pipe 11 to prevent the locking screw 4 from protruding out of the inlet and outlet pipe 11 and causing an accident.

[0032] Furthermore, a handle 51 is fixedly provided on the side wall of the locking nut 5 for facilitating its rotation.

[0033] Such a design improves the convenience of rotating the locking nut 5.

[0034] Specifically, the inspection door 2 is slidably connected to the rotating bracket 3, and the sliding direction of the inspection door 2 is parallel to the axial direction of the inlet and outlet pipe 11. The inspection door 2 has two working positions: in the first working position, the inspection door 2 is sealed and matched with the inlet and outlet pipe 11; in the second working position, the inspection door 2 is separated from the inlet and outlet pipe 11.

[0035] With such a design, when the rotating bracket 3 is locked, the inspection door 2 is located in the second working position, and the inspection door 2 is driven to move to the first working position, thereby ensuring the sealing between the inspection door 2 and the inlet and outlet pipes 11 and preventing the inspection door 2 from interfering with the rotation of the rotating bracket 3.

[0036] Specifically, an adjusting screw 21 is rotatably provided on the outer surface of the inspection door 2 , and an adjusting nut 6 is threadedly connected to the adjusting screw 21 . The adjusting screw 21 is passed through the rotating bracket 3 , and the adjusting nut 6 is disposed against the outer surface of the rotating bracket 3 .

[0037] With such a design, when the adjusting nut 6 is rotated and the position of the adjusting nut 6 is inconvenient, the adjusting screw 21 moves axially, thereby driving the inspection door 2 to switch between the first working position and the second working position.

[0038] Specifically, the rotating bracket 3 is provided with a limiting component for pressing the adjusting nut 6 against the rotating bracket 3 .

[0039] Such a design can avoid axial displacement of the adjusting nut 6.

[0040] Specifically, the limiting assembly includes a limiting block 7 fixedly connected to the rotating bracket 3, the limiting block 7 is provided with an abutting surface abutting against the adjusting nut 6, and the abutting surface is rollingly provided with a plurality of balls 71 rollingly matched with the adjusting nut 6.

[0041] Such a design ensures that the adjusting nut 6 will not be axially displaced, and also ensures the flexibility of the adjusting nut 6 in rotation.

[0042] Furthermore, the inspection door 2 is fixedly provided with a slide rod 22 , the axis direction of the slide rod 22 is parallel to the axis direction of the adjusting screw 21 , and the rotating bracket 3 is provided with a slide hole 32 slidably connected to the slide rod 22 .

[0043] This design ensures that the inspection door 2 will not rotate along its axial direction when it moves.

[0044] Furthermore, the heat exchange box 1 is provided with a plurality of reinforcing ribs 12 .

[0045] Through such a design, the strength of the heat exchange box 1 is improved.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A flue gas waste heat recovery heat exchange tube panel inspection door assembly, characterized in that: The invention comprises a heat exchange box (1), wherein a heat exchange tube panel is arranged in the inner cavity of the heat exchange box (1), wherein the heat exchange box (1) is provided with an inlet and outlet pipe (11) communicating with the inner cavity thereof, wherein the inlet and outlet pipe (11) is provided with an inspection door (2) for opening and closing; and further comprises a rotating bracket (3) rotatably connected to the side wall of the inlet and outlet pipe (11), wherein the inspection door (2) is connected to the rotating bracket (3), and a locking assembly for locking the inspection door (2) in a closed position is arranged between the rotating bracket (3) and the inlet and outlet pipe (11).

2. The flue gas waste heat recovery heat exchange tube panel inspection door assembly according to claim 1 is characterized in that: The locking assembly comprises a locking screw (4) connected to the side wall of the inlet and outlet pipe (11), and a locking nut (5) threadedly connected to the locking screw (4); the rotating bracket (3) is provided with a gap (31) for the locking screw (4) to pass through; and the locking nut (5) is arranged to abut against the outer surface of the rotating bracket (3).

3. The flue gas waste heat recovery heat exchange tube panel inspection door assembly according to claim 2 is characterized in that: The locking screw (4) is rotatably connected to the inlet and outlet pipe (11), and the axis centerline direction of the rotation axis of the locking screw (4) is perpendicular to the axis centerline direction of the inlet and outlet pipe (11).

4. The flue gas waste heat recovery heat exchange tube panel inspection door assembly according to claim 2 is characterized in that: A handle (51) is fixedly provided on the side wall of the locking nut (5) for facilitating its rotation.

5. The flue gas waste heat recovery heat exchange tube panel inspection door assembly according to claim 1 is characterized in that: The inspection door (2) is slidably connected to the rotating bracket (3), the sliding direction of the inspection door (2) is parallel to the axial direction of the inlet and outlet pipe (11), and the inspection door (2) has two working positions: in the first working position, the inspection door (2) and the inlet and outlet pipe (11) are sealed and matched; in the second working position, the inspection door (2) and the inlet and outlet pipe (11) are separated.

6. The flue gas waste heat recovery heat exchange tube panel inspection door assembly according to claim 5 is characterized in that: An adjusting screw (21) is rotatably provided on the outer surface of the inspection door (2), an adjusting nut (6) is threadedly connected to the adjusting screw (21), the adjusting screw (21) is inserted into the rotating bracket (3), and the adjusting nut (6) is arranged to abut against the outer surface of the rotating bracket (3).

7. The flue gas waste heat recovery heat exchange tube panel inspection door assembly according to claim 6 is characterized in that: The rotating bracket (3) is provided with a limiting component for pressing the adjusting nut (6) against the rotating bracket (3).

8. The flue gas waste heat recovery heat exchange tube panel inspection door assembly according to claim 7 is characterized in that: The limiting assembly comprises a limiting block (7) fixedly connected to the rotating bracket (3), the limiting block (7) being provided with an abutting surface abutting against the adjusting nut (6), and the abutting surface being rollingly provided with a plurality of balls (71) rollingly matched with the adjusting nut (6).

9. The flue gas waste heat recovery heat exchange tube panel inspection door assembly according to claim 6, characterized in that: The inspection door (2) is fixedly provided with a sliding rod (22), the axis direction of the sliding rod (22) is parallel to the axis direction of the adjusting screw (21), and the rotating bracket (3) is provided with a sliding hole (32) slidably connected to the sliding rod (22).

10. The flue gas waste heat recovery heat exchange tube panel inspection door assembly according to claim 1, characterized in that: The heat exchange box (1) is provided with a plurality of reinforcing ribs (12).

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