Heat exchanger tube box heating and heat preservation structure

Abstract

The utility model relates to a heat exchanger tube box heating and heat preservation structure which comprises a tube box body which is of a hollow structure, and a plurality of screwed plug holes are formed in the second end of the tube box body. The second end of the heat exchange pipe is welded to the first end of the pipe box body, the position of the heat exchange pipe corresponds to the screwed plug hole, and the heat exchange pipe is communicated with the interior of the pipe box body; the heating assembly is arranged in the tube box body; and the jackscrew is in threaded connection with the interior of the screwed plug hole, the first end of the jackscrew abuts against the second end of the heating assembly, so that the first end of the heating assembly abuts against the first end of the inner side of the pipe box body, the heating assembly heats the first end of the inner side of the pipe box body, the heating assembly fully heats the weld joint, and the heat treatment effect is good.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a heat exchanger tube box heating and insulation structure. Background Technology

[0002] Because the plug-type tube box has a narrow rectangular structure, when the heat exchange tubes are welded to the side of the plug-type tube box, in order to reduce the residual stress in the weld, post-weld stress-relieving heat treatment is required at the weld joint between the tube box and the heat exchange tubes according to the heat treatment temperature specified in NB / T47015. Usually, a heating tape is used to heat treat the tube ends; however, the heating tape is relatively soft and difficult to keep in close contact with the tube ends for heating, resulting in poor heat treatment effect.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model discloses a heat exchanger tube box heating and insulation structure to solve the problem of poor stress relief effect when using heating strips to treat weld seams.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A heat exchanger tube box heating and insulation structure includes: a tube box body, which is a hollow structure, with a plurality of plug holes at the second end; a heat exchange tube, the second end of which is welded to the first end of the tube box body, the position corresponding to the plug holes, the heat exchange tube communicating with the interior of the tube box body; a heating assembly disposed within the tube box body; and a set screw, threaded into the plug holes, the first end of which abuts against the second end of the heating assembly, so that the first end of the heating assembly abuts against the first end inside the tube box body, the heating assembly heating the first end inside the tube box body.

[0007] A further technical solution is that the heating component includes a heating belt and insulation cotton. The heating belt is disposed at the first end inside the tube box, the insulation cotton is filled at the second end of the heating belt, and the top screw passes through the insulation cotton and presses against the heating belt.

[0008] A further technical solution is that the heating component includes a half-frame with a first open end, a heating band and insulation cotton disposed inside the half-frame, the heating band being fixedly disposed at the first end inside the half-frame, the insulation cotton being disposed at the second end of the heating band, and the set screw pressing against the half-frame, so that the first end of the heating band presses against the first end inside the tube box.

[0009] A further technical solution is that the plug holes are of several kinds, which are staggered at the second end of the tube box along the length direction of the tube box; the heat exchange tubes are of several kinds, which are staggered and welded to the first end of the tube box along the length direction of the tube box.

[0010] A further technical solution is that when the heating component includes a heating belt and insulation cotton disposed at the second end of the heating belt, a top screw is provided in at least the two outermost plug holes located in the length direction of the tube box.

[0011] A further technical solution is that the heating belt is a tracked heating belt.

[0012] A further technical solution is that a partition plate is horizontally arranged inside the pipe box, and a first through hole is opened on the partition plate, and the partition plate divides the inside of the pipe box into two connected cavities.

[0013] A further technical solution is that the heat exchanger tube box heating and insulation structure also includes an outer shell, the outer shell is a hollow structure, the tube box body is fitted inside the outer shell, and a second through hole is opened on the outer shell corresponding to the plug hole.

[0014] The beneficial effects of this utility model embodiment are as follows:

[0015] (I) A heat exchanger tube box heating and insulation structure according to an embodiment of the present utility model is achieved by replacing the original plug at the second end of the tube box with a top screw, welding the heat exchange tube at the first end of the tube box, inserting the heating component, screwing the top screw into the plug hole until the top screw presses against the second end of the heating component and the first end of the heating component presses against the first end inside the tube box, so that the heating component fully heats the weld and the heat treatment effect is good.

[0016] (ii) Furthermore, the heating component includes a half-frame with an opening at the first end and a heating band and insulation cotton disposed inside the half-frame. Since the outer shell is rigid, it is only necessary to set a top screw in at least one plug hole to press against the outer shell to ensure that the heating band presses against the first end inside the tube box. The heat treatment effect is good, and it is convenient to install and remove the heating component. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of the heat exchanger tube box heating and insulation structure according to the first embodiment of this utility model.

[0018] Figure 2 This is a front view structural diagram of the tube box body of this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of the heat exchanger tube box heating and insulation structure according to the second embodiment of this utility model.

[0020] In the picture:

[0021] 1. Tube box body; 11. Plug hole; 12. Top screw; 13. Divider plate; 131. First through hole; 2. Heat exchange tube; 3. Heating assembly; 31. Heating belt; 32. Insulation cotton; 33. Half frame; 4. Outer shell; 41. Second through hole. Detailed Implementation

[0022] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the device proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only used to conveniently and clearly assist in illustrating the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0024] First embodiment:

[0025] This embodiment discloses a heat exchanger tube box heating and insulation structure.

[0026] like Figure 1 As shown, the heat exchanger tube box heating and insulation structure includes a tube box body 1, heat exchange tubes 2, a heating assembly 3, and a set screw 12. The tube box body 1 is a hollow structure with several plug holes 11 at its second end. The second end of the heat exchange tube 2 is welded to the first end of the tube box body 1, corresponding to the plug holes 11, and the heat exchange tube 2 communicates with the interior of the tube box body 1. The heating assembly 3 is disposed inside the tube box body 1. The set screw 12 is threaded into the plug holes 11, with its first end pressing against the second end of the heating assembly 3, so that the first end of the heating assembly 3 presses against the first end of the inner side of the tube box body 1, and the heating assembly 3 heats the first end of the inner side of the tube box body 1.

[0027] like Figure 1As shown, the heating assembly 3 further includes a heating belt 31 and insulation cotton 32. The heating belt 31 is disposed at the first end inside the tube housing 1, and the insulation cotton 32 is filled at the second end of the heating belt 31. The set screw 12 passes through the insulation cotton 32 and abuts against the heating belt 31. Exemplarily, the heating belt 31 is a tracked heating belt 31, which has sufficient length and can be bent and folded.

[0028] like Figure 2 As shown, furthermore, there are several plug holes 11, which are staggered at the second end of the tube box 1 along the length direction of the tube box 1. There are several heat exchange tubes 2, which are staggered and welded to the first end of the tube box 1 along the length direction of the tube box 1. Since the tube box 1 is relatively long and the tracked heating belt 31 can be bent and folded, after the tracked heating belt 31 is straightened, at least the two outermost plug holes 11 located in the length direction of the tube box 1 are provided with top screws 12 to press against the tracked heating belt 31, so as to ensure that the tracked heating belt 31 presses against the first end of the inner side of the tube box 1.

[0029] like Figure 1 As shown, further, a partition plate 13 is horizontally arranged inside the tube box 1, and a first through hole 131 is opened on the partition plate 13. The partition plate 13 divides the inside of the tube box 1 into two connected cavities, and a heating component 3 is arranged in both cavities.

[0030] like Figure 1 As shown, the heat exchanger tube box heating and insulation structure further includes an outer shell 4, which is a hollow structure. The tube box 1 is fitted inside the outer shell 4. A second through hole 41 is opened on the outer shell 4 at the corresponding screw plug hole 11. The outer shell 4 provides a certain heat preservation effect for the tube box 1 and facilitates the installation and disassembly of the tube box 1.

[0031] In this embodiment, by replacing the original plug at the second end of the tube box 1 with a top screw 12, and welding the heat exchange tube 2 at the first end of the tube box 1, the heating assembly 3 is placed in, and the top screw 12 is screwed into the plug hole 11 until the top screw 12 is pressed against the second end of the heating assembly 3 and the first end of the heating assembly 3 is pressed against the first end of the inner side of the tube box 1. The heating assembly 3 fully heats the weld, resulting in a good heat treatment effect.

[0032] Second embodiment:

[0033] Based on the first embodiment, the second embodiment further optimizes and refines the heating component 3 of the first embodiment.

[0034] like Figure 3As shown, the heating assembly 3 includes a half-frame 33 with an opening at the first end, a heating band 31 and a heat insulation cotton 32 disposed inside the half-frame 33. The heating band 31 is fixedly disposed at the first end inside the half-frame 33, and the heat insulation cotton 32 is disposed at the second end of the heating band 31. The set screw 12 abuts against the half-frame 33, so that the first end of the heating band 31 abuts against the first end inside the tube box 1.

[0035] In this embodiment, since the outer shell 4 is rigid, it is only necessary to set a top screw 12 in at least one plug hole 11 to press against the outer shell 4 to ensure that the heating band 31 presses against the first end of the inner side of the tube box 1, resulting in good heat treatment effect and facilitating the installation and removal of the heating component 3.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A heat exchanger tube box heating and insulation structure, characterized in that, The heat exchanger tube box heating and heat preservation structure comprises: a tube box body, which is a hollow structure and has a plurality of plug holes at a second end; a heat exchange tube, which is welded to a first end of the tube box body at a position corresponding to the plug holes and is in communication with the inside of the tube box body; a heating assembly arranged in the tube box body; a top screw, which is threadedly connected to the plug hole, abuts against a second end of the heating assembly, and abuts against a first end of the inside of the tube box body, so that the heating assembly heats the first end of the inside of the tube box body.

2. The heat exchanger tube channel heating and heat preserving structure according to claim 1, characterized in that: The heating assembly comprises a heating belt arranged at the first end of the inside of the tube box body and heat preservation cotton filled at a second end of the heating belt, and the top screw abuts against the heating belt through the heat preservation cotton.

3. The heat exchanger tube channel heating and insulation structure according to claim 1, characterized in that: The heating assembly comprises a half frame body with an open first end and a heating belt and heat preservation cotton arranged in the inside of the half frame body, the heating belt is fixedly arranged at the first end of the inside of the half frame body, the heat preservation cotton is arranged at a second end of the heating belt, and the top screw abuts against the half frame body, so that the first end of the heating belt abuts against the first end of the inside of the tube box body.

4. The heat exchanger tube channel heating and insulation structure according to claim 2 or 3, characterized in that: The plug holes are a plurality of holes staggered at the second end of the tube box body along the length direction of the tube box body, and the heat exchange tubes are a plurality of tubes staggered welded at the first end of the tube box body along the length direction of the tube box body.

5. The heat exchanger tube channel heating and insulation structure according to claim 4, characterized in that: When the heating assembly comprises a heating belt and heat preservation cotton arranged at a second end of the heating belt, top screws are arranged in at least the plug holes at the two most side positions along the length direction of the tube box body.

6. The heat exchanger tube channel heating and insulation structure according to claim 2 or 3, characterized in that: The heating belt is a track-type heating belt.

7. The heat exchanger tube channel heating and insulation structure according to claim 1, characterized in that: A partition plate is horizontally arranged in the tube box body, a first through hole is arranged in the partition plate, and the partition plate divides the inside of the tube box body into two cavities in communication.

8. The heat exchanger tube channel heating and insulation structure according to claim 1, characterized in that: The heat exchanger tube box heating and heat preservation structure further comprises an outer shell, which is a hollow structure, the tube box body is sleeved in the outer shell, and a second through hole is arranged in the outer shell at a position corresponding to the plug holes.

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