Novel outer sheet spliced graphite boat

Abstract

The utility model discloses a novel graphite boat with spliced outer sheets, which relates to the technical field of photovoltaic solar energy and comprises outer boat sheets and inner boat sheets, inner boat lugs are fixedly arranged at two ends of each inner boat sheet, outer boat lugs are fixedly arranged on the outer boat sheets, second fixing holes are arranged on the outer boat lugs and the inner boat lugs, and the outer boat lugs and the inner boat lugs are fixedly arranged on the outer boat sheets. The axis of the second fixing hole in the outer boat lug coincides with the axis of the second fixing hole in the inner boat lug, and the first fixing piece and the second fixing piece are used for fixing the outer boat piece and the inner boat piece. The outer boat piece is divided into the long splicing outer piece and the short splicing outer piece, so that the whole outer boat piece does not need to be replaced when the non-electrode end of the outer boat piece is oxidized, only the short splicing outer piece needs to be replaced, the loss of the graphite boat is greatly reduced, and cost reduction and efficiency improvement are realized.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic solar energy technology, and in particular to a novel outer sheet splicing graphite boat. Background Technology

[0002] With the continuous development of photovoltaic cell technology, market competition is intensifying, and end-user manufacturers are increasingly demanding increased production and cost reduction. This increased production efficiency, when reflected in the coating process of cell factories, means raising the process temperature, reducing heat dissipation time, and increasing the furnace exit temperature from below 500℃ to above 550℃. This, in turn, results in frequent high-temperature oxidation on the graphite boat, causing the non-electrode oxidation rate of the graphite boat to be faster than expected, especially the outer boat sheet. Due to the shortened oxidation cycle, the losses also increase significantly, thus requiring urgent improvement. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a new type of outer sheet splicing graphite boat, which aims to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A novel type of graphite boat with spliced ​​outer sheets includes two outer boat sheets and multiple inner boat sheets. The multiple inner boat sheets are equidistantly arranged between two outer boat sheets. Multiple first fixing holes penetrating the inner boat sheets are formed on the two outer boat sheets. Inner boat ears are fixedly provided at both ends of each inner boat sheet. Outer boat ears are fixedly provided on each outer boat sheet. Second fixing holes are formed on both the outer and inner boat ears, and the axis of the second fixing hole on the outer boat ear coincides with the axis of the second fixing hole on the inner boat ear. The system also includes:

[0006] The first fastener has multiple sets, and the first fastener is used to fasten the outer boat piece and the inner boat piece;

[0007] The second fastener has multiple sets and is used to fix the outer and inner boat ears.

[0008] Preferably, the outer sheet includes a long spliced ​​outer sheet and a short spliced ​​outer sheet, and the opposite ends of the long spliced ​​outer sheet and the short spliced ​​outer sheet are provided with mating grooves.

[0009] Preferably, a ceramic sleeve is provided between the outer and inner boat pieces, and an inner boat piece is also provided between each inner boat piece, wherein the axis of the ceramic sleeve coincides with the axis of the first fixing hole.

[0010] Preferably, a graphite spacer is provided between the outer and inner boat ears.

[0011] Preferably, the first fastener includes:

[0012] The first ceramic rod passes through the first fixing hole on the inner and outer boat plates, and the first ceramic rod is also fitted with a ceramic sleeve.

[0013] Fasteners, threaded at both ends of the first ceramic rod.

[0014] Preferably, the second fixing member includes a second ceramic rod, which passes through the second fixing holes on the outer and inner boat ears, and the second ceramic rod also passes through a graphite spacer.

[0015] Preferably, the fastener comprises:

[0016] A carbon-carbon elastic pad is fitted onto the first ceramic rod and the second ceramic rod;

[0017] A carbon flat pad is fitted onto the first ceramic rod and the second ceramic rod;

[0018] A graphite nut is disposed on the first ceramic rod and the second ceramic rod, and is threadedly connected to the first ceramic rod and the second ceramic rod.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0020] By splitting the outer boat into long spliced ​​outer pieces and short spliced ​​outer pieces, when the non-electrode end of the outer boat is oxidized, it is not necessary to replace the entire outer boat; only the short spliced ​​outer piece needs to be replaced. This greatly reduces the wear and tear on the graphite boat, achieving cost reduction and efficiency improvement. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A three-dimensional structural schematic diagram of a novel graphite boat with spliced ​​outer sheets is shown.

[0023] Figure 2 It shows Figure 1 A magnified view of the local structure at point A in the middle.

[0024] Figure 3 A schematic diagram of the structure of an outer boat in a novel type of graphite boat with spliced ​​outer sheets is shown.

[0025] Figure 4 It shows Figure 3 A magnified view of the local structure at point B.

[0026] Figure 5 An exploded view of the outer hull is shown.

[0027] Figure 6 It shows Figure 5 A magnified schematic diagram of the local structure at point C.

[0028] Legend:

[0029] 1. Outer boat piece; 101. Long spliced ​​outer piece; 102. Short spliced ​​outer piece; 2. Inner boat piece; 3. First fixing hole; 4. Inner boat lug; 5. Outer boat lug; 6. Second fixing hole; 7. Connecting groove; 8. Ceramic sleeve; 9. Graphite spacer; 10. First ceramic rod; 11. Second ceramic rod; 12. Carbon-carbon elastic washer; 13. Carbon-carbon flat washer; 14. Graphite nut. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] Reference Figures 1 to 6 The present invention will further describe an embodiment of a novel outer sheet splicing graphite boat.

[0035] A novel type of graphite boat with spliced ​​outer sheets includes two outer boat sheets 1 and multiple inner boat sheets 2. The multiple inner boat sheets 2 are equidistantly arranged between two outer boat sheets 1. Multiple first fixing holes 3 penetrating the inner boat sheets 2 are formed on the two outer boat sheets 1. Inner boat ears 4 are fixedly provided at both ends of each inner boat sheet 2. Outer boat ears 5 are fixedly provided on the outer boat sheets 1. Second fixing holes 6 are formed on the outer boat ears 5 and the inner boat ears 4, with the axis of the second fixing hole 6 on the outer boat ear 5 coinciding with the axis of the second fixing hole 6 on the inner boat ear 4. The system also includes:

[0036] The first fixing member has multiple sets and is used to fix the outer boat piece 1 and the inner boat piece 2. The first fixing member includes a first ceramic rod 10, which passes through the first fixing hole 3 on the inner boat piece 2 and the outer boat piece 1. The first ceramic rod 10 also passes through a ceramic sleeve 8. By setting a second ceramic rod 11, the second ceramic rod 11 is transversely passed through the outer boat piece 1 and the inner boat piece 2 to form a grid-like fixing structure, which improves the overall torsional stiffness and thus avoids the problem of easy bending of long graphite boats to a certain extent. Fasteners are threaded at both ends of the first ceramic rod 10. By setting the first fixing member, the outer boat piece 1 and the inner boat piece 2 are fixed.

[0037] The second fastener has multiple sets and is used to fix the outer boat lug 5 and the inner boat lug 4. The second fastener includes a second ceramic rod 11, which passes through the second fixing hole 6 on the outer boat lug 5 and the inner boat lug 4. The second ceramic rod 11 also passes through a graphite spacer 9, and fasteners are provided at both ends of the second ceramic rod 11.

[0038] The fasteners include a carbon-carbon elastic washer 12, which is sleeved on the first ceramic rod 10 and the second ceramic rod 11. The viscoelastic properties of the carbon-carbon elastic washer 12 can absorb high-frequency vibration energy and prevent fatigue fracture of the ceramic rod threads. A carbon-carbon flat washer 13 is sleeved on the first ceramic rod 10 and the second ceramic rod 11. The carbon-carbon flat washer 13 disperses the surface pressure when the nut is tightened, preventing the ceramic rod ends from cracking due to point load. A graphite nut 14 is set on the first ceramic rod 10 and the second ceramic rod 11 and is threadedly connected to the first ceramic rod 10 and the second ceramic rod 11. The graphite nut 14 reduces the risk of seizing due to the self-lubricating property of graphite when it is threaded with the first ceramic rod 10 and the second ceramic rod 11, and there is no oxidation and adhesion problem at high temperature.

[0039] The outer sheet includes a long spliced ​​outer sheet 101 and a short spliced ​​outer sheet 102. The opposite ends of the long spliced ​​outer sheet 101 and the short spliced ​​outer sheet 102 are provided with mating grooves 7. During use, the mating grooves 7 of the long spliced ​​outer sheet 101 and the short spliced ​​outer sheet 102 are aligned. After the first ceramic rod 10 passes through the outer boat sheet 1 and the inner boat sheet 2, fasteners are used to fix the outer boat sheet 1 and the inner boat sheet 2, thus completing the installation. When the non-electrode end of the graphite boat is oxidized, only the short spliced ​​outer sheet 102 needs to be replaced, thus achieving rapid replacement of the short spliced ​​outer sheet 102. By splitting the outer boat sheet 1 into a long spliced ​​outer sheet 101 and a short spliced ​​outer sheet 102, when the non-electrode end of the outer boat sheet 1 is oxidized, it is not necessary to replace the entire outer boat sheet 1; only the short spliced ​​outer sheet 102 needs to be replaced, thereby greatly reducing the wear and tear on the graphite boat and achieving cost reduction and efficiency improvement.

[0040] A ceramic sleeve 8 is provided between the outer boat 1 and the inner boat 2, and an inner boat 2 is also provided between each inner boat 2. The axis of the ceramic sleeve 8 coincides with the axis of the first fixing hole 3. By providing a ceramic sleeve 8 between the outer boat 1 and the inner boat 2, direct contact between the outer boat 1 and the inner boat 2 is isolated, preventing short circuits caused by current passing through the outer boat 1 and the inner boat 2. At the same time, the axis of the ceramic sleeve 8 coincides with the axis of the first fixing hole 3, ensuring the parallelism of multiple inner boat 2 and outer boat 1, and preventing misalignment at high temperatures that could cause the silicon wafer to tilt during loading.

[0041] A graphite spacer 9 is provided between the outer boat ear 5 and the inner boat ear 4. By providing the graphite spacer 9, the graphite spacer 9 between the inner boat ears 4 forms a "soft connection". The self-lubricating property of graphite allows for small thermal displacement, while preventing rigid collisions between the inner boat sheets 2 that could lead to breakage. At the same time, graphite is compatible with the silicon wafer process environment, avoiding the introduction of impurities that could affect the performance of the photovoltaic cell.

[0042] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A new type of graphite boat spliced by outer sheets, comprising outer boat sheets (1) and inner boat sheets (2), the outer boat sheets (1) are provided with two, the inner boat sheets (2) are provided with multiple, and multiple inner boat sheets (2) are equidistantly arranged between the two outer boat sheets (1), characterized in that, The two outer boat pieces (1) are provided with a plurality of first fixing holes (3) penetrating the inner boat piece (2). Inner boat ears (4) are fixedly provided at both ends of the inner boat piece (2). Outer boat ears (5) are fixedly provided on the outer boat piece (1). Second fixing holes (6) are provided on the outer boat ears (5) and the inner boat ears (4), and the axis of the second fixing hole (6) on the outer boat ear (5) coincides with the axis of the second fixing hole (6) on the inner boat ear (4). The method also includes: The first fastener has multiple sets, and the first fastener is used to fasten the outer boat piece (1) and the inner boat piece (2); The second fastener has multiple sets and is used to fasten the outer boat ear (5) and the inner boat ear (4).

2. A novel graphite boat of spliced outer sheets according to claim 1, characterized in that, The outer piece includes a long spliced ​​outer piece (101) and a short spliced ​​outer piece (102), and the opposite ends of the long spliced ​​outer piece (101) and the short spliced ​​outer piece (102) are provided with mating grooves (7).

3. The novel graphite boat of claim 2, wherein, A ceramic sleeve (8) is provided between the outer boat piece (1) and the inner boat piece (2), and an inner boat piece (2) is also provided between each inner boat piece (2). The axis of the ceramic sleeve (8) coincides with the axis of the first fixing hole (3).

4. The novel graphite boat of claim 3, wherein A graphite spacer (9) is provided between the outer boat ear (5) and the inner boat ear (4).

5. The novel graphite boat of claim 4, wherein The first fastener includes: The first ceramic rod (10) is inserted through the first fixing hole (3) on the inner boat plate (2) and the outer boat plate (1), and the first ceramic rod (10) is also inserted through the ceramic sleeve (8); Fasteners are threaded onto both ends of the first ceramic rod (10).

6. The novel graphite boat of claim 5, wherein, The second fastener includes a second ceramic rod (11), which passes through the second fixing hole (6) on the outer boat ear (5) and the inner boat ear (4), and the second ceramic rod (11) also passes through a graphite spacer (9).

7. A novel graphite boat of spliced outer sheets according to claim 6, characterized by, The fasteners include: A carbon-carbon elastic pad (12) is fitted onto the first ceramic rod (10) and the second ceramic rod (11); A carbon flat pad (13) is fitted onto the first ceramic rod (10) and the second ceramic rod (11); A graphite nut (14) is disposed on the first ceramic rod (10) and the second ceramic rod (11) and is threadedly connected to the first ceramic rod (10) and the second ceramic rod (11).

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