Auxiliary jig for maintaining coated furnace tube

Abstract

The utility model discloses an auxiliary jig for maintaining a film-coated furnace tube. The auxiliary jig for maintaining the film-coated furnace tube comprises a bracket, a guide rail and a guide rail, the roller is rotatably arranged at the bottom of the bracket, the auxiliary jig for maintaining the film-coated furnace tube is suitable for entering and exiting the film-coated furnace tube, and the roller is suitable for being supported on the inner wall of the film-coated furnace tube; the supporting plate is arranged on the bracket in a lifting manner, and the supporting plate is suitable for supporting an upper auxiliary heating sleeve in the coating furnace tube. According to the auxiliary jig for maintaining the coated furnace tube, the replacement efficiency of the sealing ring can be improved, the replacement period is shortened, the replacement reliability is improved, and the auxiliary jig has the advantages of being convenient to operate, high in applicability and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell sheet manufacturing, in particular to a coating furnace tube maintenance auxiliary fixture. Background Art

[0002] The coating process in the manufacturing process of solar cells needs to be carried out in the coating furnace tube to ensure high temperature and vacuum process conditions. The front flange sealing ring of the coating furnace tube is prone to leakage after long-term use, resulting in abnormal vacuum function. The leaking sealing ring needs to be replaced.

[0003] To replace the sealing ring, you need to remove the front flange of the furnace tube first. Due to the interference between the structures, the upper auxiliary heating sleeve bracket needs to be removed before removing the front flange of the furnace tube. The upper auxiliary heating sleeve in the coated furnace tube is supported on the upper auxiliary heating sleeve bracket. Removing the upper auxiliary heating sleeve bracket will cause the upper auxiliary heating sleeve to lose support.

[0004] Therefore, the method of replacing the sealing ring of the front flange of the coated furnace tube in the related art requires first waiting for the temperature of the coated furnace tube to drop from 520 degrees Celsius to below 150 degrees Celsius, and then removing the upper auxiliary heating sleeve, the upper auxiliary heating sleeve bracket, and the front flange of the furnace tube in turn, and then replacing the sealing ring. On the one hand, the operation cycle is long and the removal work is time-consuming and laborious. On the other hand, the removal process of the upper auxiliary heating sleeve is likely to cause damage to the upper auxiliary heating sleeve itself or its sealing structure, and excessive cooling is likely to cause failure of the rear flange sealing ring due to thermal expansion and contraction, resulting in secondary failure. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a coating furnace tube maintenance auxiliary jig, which can improve the efficiency of sealing ring replacement, shorten the replacement cycle, and improve the replacement reliability, and has the advantages of easy operation and strong applicability.

[0006] To achieve the above-mentioned purpose, according to an embodiment of the utility model, a coating furnace tube maintenance auxiliary jig is proposed, the coating furnace tube maintenance auxiliary jig comprises: a bracket; a roller, the roller is rotatably arranged at the bottom of the bracket, the coating furnace tube maintenance auxiliary jig is suitable for entering and exiting the coated furnace tube, the roller is suitable for being supported on the inner wall of the coated furnace tube; a support plate, the support plate is liftably arranged on the bracket, and the support plate is suitable for supporting the upper auxiliary heating sleeve in the coated furnace tube.

[0007] The auxiliary jig for repairing the coating furnace tube according to the embodiment of the utility model can improve the efficiency of replacing the sealing ring, shorten the replacement cycle, and improve the replacement reliability, and has the advantages of easy operation and strong applicability.

[0008] In addition, the auxiliary fixture for repairing the coating furnace tube according to the above embodiment of the utility model may also have the following additional technical features:

[0009] According to an embodiment of the utility model, a lifting rod is connected to the lower surface of the support plate, and a positioning threaded member is provided on the bracket. The positioning threaded member has a tightened state for locking the lifting rod and a loosened state for releasing the lifting rod.

[0010] According to an embodiment of the utility model, the edge of the support plate is provided with a stop edge extending obliquely upward and outward.

[0011] According to an embodiment of the utility model, there are multiple rollers and they are arranged at intervals on the bracket.

[0012] According to an embodiment of the present invention, there are four rollers and they are respectively located at four corners of the bottom surface of the bracket.

[0013] According to an embodiment of the present invention, the roller is made of a heat-resistant material.

[0014] According to an embodiment of the present invention, the heat-resistant temperature of the roller is greater than or equal to 500 degrees Celsius.

[0015] According to an embodiment of the utility model, the bracket includes an upper frame, a lower frame and a plurality of connecting rods, the plurality of connecting rods are arranged at intervals along the circumference of the upper frame, and the upper end of each connecting rod is connected to the upper frame and the lower end is connected to the lower frame.

[0016] According to one embodiment of the utility model, the support plate has an upper limit position and a lower limit position, and when the support plate is located at the upper limit position, the height from the lower end of the roller is 460-500 mm, and when the support plate is located at the lower limit position, the height from the lower end of the roller is 300-340 mm.

[0017] According to an embodiment of the present invention, the diameter of the roller is greater than or equal to 60 mm.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 The utility model is a schematic diagram of the structure of the auxiliary jig for repairing the coated furnace tube and the coated furnace tube according to the embodiment of the utility model.

[0021] Figure 2 It is a structural schematic diagram of a coating furnace tube maintenance auxiliary jig according to an embodiment of the utility model.

[0022] Figure 3 It is a structural schematic diagram of a coating furnace tube maintenance auxiliary jig according to an embodiment of the utility model.

[0023] Figure 4 It is a structural schematic diagram of a coating furnace tube maintenance auxiliary jig according to an embodiment of the utility model.

[0024] Figure numerals: coating furnace tube maintenance auxiliary jig 1, bracket 10, upper frame 11, lower frame 12, connecting rod 13, roller 20, support plate 30, stop edge 31, lifting rod 40, positioning screw 50, coating furnace tube 2, upper auxiliary heating sleeve bracket 3, furnace tube front flange 4, upper auxiliary heating sleeve 5, furnace tube rear flange 6, lower auxiliary heating sleeve 7. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present utility model, it is necessary to understand 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 positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The coating furnace tube maintenance auxiliary jig 1 according to an embodiment of the utility model is described below with reference to the accompanying drawings.

[0029] like Figure 1-Figure 4 As shown, the coating furnace tube maintenance auxiliary jig 1 according to an embodiment of the utility model includes a bracket 10, a roller 20 and a support plate 30.

[0030] The roller 20 is rotatably arranged at the bottom of the bracket 10 (the up and down and front and back directions are shown by the arrows in the figure), the coating furnace tube maintenance auxiliary fixture 1 is suitable for entering and exiting the coating furnace tube 2, and the roller 20 is suitable for supporting on the inner wall of the coating furnace tube 2. The support plate 30 is liftably arranged on the bracket 10, and the support plate 30 is suitable for supporting the upper auxiliary heating sleeve 5 in the coating furnace tube 2.

[0031] Specifically, the front end of the coating furnace tube 2 is provided with a furnace tube front flange 4 and the rear end is provided with a furnace tube rear flange 6, the upper part of the coating furnace tube 2 is provided with an upper auxiliary heating sleeve 5 and the lower part is provided with a lower auxiliary heating sleeve 7, the front end of the coating furnace tube 2 is provided with an upper auxiliary heating sleeve bracket 3, and the upper auxiliary heating sleeve 5 is supported on the upper auxiliary heating sleeve bracket 3.

[0032] The method for replacing the sealing ring of the front flange of the coating furnace tube in the related art requires first waiting for the temperature of the coating furnace tube 2 to drop from 520 degrees Celsius to below 150 degrees Celsius, and then removing the upper auxiliary heating sleeve 5, the upper auxiliary heating sleeve bracket 3, and the furnace tube front flange 4 in turn before replacing the sealing ring.

[0033] Reference below Figure 1-Figure 4 The operation process of replacing the sealing ring using the auxiliary jig 1 for repairing the coating furnace tube according to the embodiment of the utility model is described.

[0034] First, cool down to about 300 degrees, put the coating furnace tube maintenance auxiliary fixture 1 into the coating furnace tube 2, support the roller 20 on the inner wall of the coating furnace tube 2, adjust the height of the support plate 30, support the upper auxiliary heating sleeve 5 on the support plate 30, then remove the upper auxiliary heating sleeve bracket 3, and then remove the furnace tube front flange 4. After replacing the sealing ring, install the furnace tube front flange 4 and the upper auxiliary heating sleeve bracket 3 in sequence, support the upper auxiliary heating sleeve 5 on the upper auxiliary heating sleeve bracket 3, and finally lower the height of the support plate 30, take out the coating furnace tube maintenance auxiliary fixture 1, and complete the replacement of the furnace tube front flange sealing ring.

[0035] According to the auxiliary fixture 1 for repairing the coating furnace tube of the embodiment of the utility model, by supporting the upper auxiliary heating sleeve 5, it is possible to avoid the situation in which the upper auxiliary heating sleeve 5 loses support after the upper auxiliary heating sleeve bracket 3 is removed. Therefore, in the process of replacing the front flange sealing ring, it is not necessary to remove the upper auxiliary heating sleeve 5, but only the upper auxiliary heating sleeve bracket 3 and the furnace tube front flange 4 need to be removed. Compared with the sealing ring replacement method in the related art that requires the upper auxiliary heating sleeve to be removed, on the one hand, it is possible to reduce the disassembly and assembly steps, shorten the operation cycle, and make the replacement work more time-saving and labor-saving. On the other hand, since there is no need to remove the upper auxiliary heating sleeve 5, it is possible to avoid damage to the upper auxiliary heating sleeve 5 itself or the sealing structure of the upper auxiliary heating sleeve 5 due to the disassembly and assembly process. Moreover, since there is no need to remove the upper auxiliary heating sleeve 5, there is no need to excessively lower the temperature, which reduces the waiting time for cooling, and can avoid failure of other sealing structures due to excessive cooling, avoid secondary failures, and improve the reliability of replacement.

[0036] In addition, by setting the roller 20, the coating furnace tube maintenance auxiliary jig 1 can be easily moved in and out of the coating furnace tube 2, making the coating furnace tube maintenance auxiliary jig 1 more convenient to operate, and avoiding the bracket 10 from directly contacting the inner wall of the coating furnace tube 2, thereby avoiding the bracket 10 from scratching the inner wall of the coating furnace tube 2 during the movement of the bracket 10 in and out.

[0037] In addition, by making the support plate 30 liftably arranged on the bracket 10, the support plate 30 can be raised when it is necessary to support the upper auxiliary heating sleeve 5, and can be lowered when it is not needed. On the one hand, it can facilitate the coating furnace tube maintenance auxiliary jig 1 to enter and exit the coating furnace tube 2, making the coating furnace tube maintenance auxiliary jig 1 more convenient to operate. On the other hand, it can be suitable for upper auxiliary heating sleeves 5 of different heights, thereby improving the applicability of the coating furnace tube maintenance auxiliary jig 1.

[0038] Therefore, the auxiliary fixture 1 for repairing the coating furnace tube according to the embodiment of the utility model can improve the efficiency of replacing the sealing ring, shorten the replacement cycle, and improve the replacement reliability, and has the advantages of easy operation and strong applicability.

[0039] The following describes a coating furnace tube maintenance auxiliary jig 1 according to a specific embodiment of the utility model with reference to the accompanying drawings.

[0040] In some specific embodiments of the present invention, Figure 1-Figure 4 As shown, the coating furnace tube maintenance auxiliary jig 1 according to an embodiment of the utility model includes a bracket 10, a roller 20 and a support plate 30.

[0041] Specifically, Figure 1-Figure 3As shown, the lower surface of the support plate 30 is connected to the lifting rod 40, and the bracket 10 is provided with a positioning screw 50, which has a tightened state for locking the lifting rod 40 and a loosened state for releasing the lifting rod 40. In this way, the lifting rod 40 can be locked and released by tightening or loosening the positioning screw 50, and the positioning screw 50 is loosened when the height of the support plate 30 needs to be adjusted, and the positioning screw 50 is tightened after the support plate 30 is adjusted to a suitable position, thereby achieving the height adjustment and positioning of the support plate 30.

[0042] Advantageously, if Figure 3 As shown, the edge of the support plate 30 is provided with a stopper edge 31 extending upward and outwardly. This can facilitate the upper auxiliary heating sleeve 5 to remain on the support plate 30, prevent the upper auxiliary heating sleeve 5 from sliding off the support plate 30, and improve the reliability of supporting the upper auxiliary heating sleeve 5.

[0043] More advantageously, if Figure 1-Figure 4 As shown, there are multiple rollers 20 and they are arranged at intervals on the bracket 10. In this way, multiple rollers 20 can be used to support the bracket 10, thereby improving the stability of the coating furnace tube maintenance auxiliary fixture 1 in the coating furnace tube 2.

[0044] Furthermore, if Figure 4 As shown, there are four rollers 20, which are respectively located at the four corners of the bottom surface of the bracket 10. This can further improve the stability of the coating furnace tube maintenance auxiliary fixture 1 in the coating furnace tube 2.

[0045] Optionally, the roller 20 is made of a heat-resistant material, which can prevent the roller 20 from being damaged by the high temperature in the coating furnace tube 2.

[0046] Furthermore, the heat-resistant temperature of the roller 20 is greater than or equal to 500 degrees Celsius. This can not only prevent the roller 20 from being damaged by high temperature, but also shorten the waiting time for cooling and improve the efficiency of replacing the sealing ring.

[0047] Figure 1-Figure 4 The figure shows a coating furnace tube maintenance auxiliary jig 1 according to some examples of the utility model. Figure 1-Figure 4 As shown, the bracket 10 includes an upper frame 11, a lower frame 12 and a plurality of connecting rods 13, the plurality of connecting rods 13 are arranged at intervals along the circumference of the upper frame 11, and the upper end of each connecting rod 13 is connected to the upper frame 11 and the lower end is connected to the lower frame 12. Specifically, there are four connecting rods 13 and they are located at the four corners of the upper frame 11. In this way, not only a stable frame structure can be formed, but also the weight and material cost of the coating furnace tube maintenance auxiliary jig 1 can be reduced, the coating furnace tube maintenance auxiliary jig 1 can be moved easily, and the replacement operation can be further facilitated.

[0048] Specifically, the length and width of the lower frame 12 are greater than those of the upper frame 11. In this way, a structure with a larger bottom and a smaller top can be formed, further improving the stability of the auxiliary fixture 1 for coating furnace tube maintenance when supporting.

[0049] Optionally, the support plate 30 has an upper limit position and a lower limit position, and when the support plate 30 is at the upper limit position, the height from the lower end of the roller 20 is 460-500 mm, and when the support plate 30 is at the lower limit position, the height from the lower end of the roller 20 is 300-340 mm. Here, preferably, when the support plate 30 is at the upper limit position, the height from the lower end of the roller 20 is 480 mm, and when the support plate 30 is at the lower limit position, the height from the lower end of the roller 20 is 320 mm. In this way, the support plate 30 can have a reasonable height adjustment range.

[0050] Further, the diameter of the roller 20 is greater than or equal to 60 mm. Here, the diameter of the roller 20 is preferably 70-80 mm. This makes it easier for the bracket 10 to avoid the lower auxiliary heating sleeve 7, and makes it easier for the coating furnace tube maintenance auxiliary fixture 1 to be supported on the inner wall of the coating furnace tube 2 by the roller 20.

[0051] Specifically, the support plate 30 and the bracket 10 are both made of stainless steel, preferably 304 stainless steel, so as to ensure the structural strength, support stability and heat resistance of the bracket 10.

[0052] The coating furnace tube maintenance auxiliary jig 1 has a length of 400 mm and a width of 200 mm. The height of the upper surface of the bracket 10 from the lower end of the roller 20 is 210 mm. In this way, the coating furnace tube maintenance auxiliary jig 1 has a reasonable size and is easy to put into the coating furnace tube 2.

[0053] Reference below Figure 1-Figure 4 The operation process of replacing the sealing ring using the coating furnace tube maintenance auxiliary jig 1 according to the specific embodiment of the utility model is described.

[0054] When the sealing ring needs to be replaced, first cool down to about 300 degrees, put the coating furnace tube maintenance auxiliary fixture 1 into the coating furnace tube 2, support the roller 20 on the inner wall of the coating furnace tube 2, adjust the height of the support plate 30, support the upper auxiliary heating sleeve 5 on the support plate 30 and tighten the positioning screw 50, then remove the upper auxiliary heating sleeve bracket 3, and then remove the furnace tube front flange 4. After replacing the sealing ring, install the furnace tube front flange 4 and the upper auxiliary heating sleeve bracket 3 in turn, support the upper auxiliary heating sleeve 5 on the upper auxiliary heating sleeve bracket 3, and finally loosen the positioning screw 50, lower the height of the support plate 30, take out the coating furnace tube maintenance auxiliary fixture 1, and the replacement of the furnace tube front flange sealing ring can be completed.

[0055] Other structures and operations of the auxiliary fixture 1 for repairing the coating furnace tube according to the embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0057] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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 claims and their equivalents.

Claims

1. A coating furnace tube maintenance auxiliary fixture, characterized in that: include: Bracket; A roller, the roller is rotatably arranged at the bottom of the bracket, the coating furnace tube maintenance auxiliary jig is suitable for entering and exiting the coating furnace tube, and the roller is suitable for being supported on the inner wall of the coating furnace tube; A support plate is movably arranged on the bracket, and the support plate is suitable for supporting the upper auxiliary heating sleeve in the coating furnace tube.

2. The coating furnace tube maintenance auxiliary jig according to claim 1 is characterized in that: A lifting rod is connected to the lower surface of the support plate, and a positioning screw is provided on the bracket. The positioning screw has a tightening state for locking the lifting rod and a loosening state for releasing the lifting rod.

3. The coating furnace tube maintenance auxiliary jig according to claim 1 is characterized in that: The edge of the support plate is provided with a stop edge extending obliquely upward and outward.

4. The auxiliary fixture for coating furnace tube maintenance according to claim 1, characterized in that: The rollers are multiple and are arranged on the bracket at intervals.

5. The coating furnace tube maintenance auxiliary jig according to claim 4 is characterized in that: There are four rollers, which are respectively located at four corners of the bottom surface of the bracket.

6. The coating furnace tube maintenance auxiliary jig according to claim 1, characterized in that: The roller is made of heat-resistant material.

7. The auxiliary fixture for coating furnace tube maintenance according to claim 6, characterized in that: The heat-resistant temperature of the roller is greater than or equal to 500 degrees Celsius.

8. The coating furnace tube maintenance auxiliary jig according to claim 1, characterized in that: The bracket comprises an upper frame, a lower frame and a plurality of connecting rods, wherein the plurality of connecting rods are arranged at intervals along the circumference of the upper frame, and the upper end of each connecting rod is connected to the upper frame and the lower end is connected to the lower frame.

9. The auxiliary fixture for coating furnace tube maintenance according to claim 1, characterized in that: The support plate has an upper limit position and a lower limit position. When the support plate is at the upper limit position, the height from the lower end of the roller is 460-500 mm. When the support plate is at the lower limit position, the height from the lower end of the roller is 300-340 mm.

10. The coating furnace tube maintenance auxiliary jig according to claim 1, characterized in that: The diameter of the roller is greater than or equal to 60 mm.

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