Welding sleeve structure for preventing hot oil in oil tank from leaking

Abstract

The utility model discloses a welding sleeve structure for preventing hot oil in an oil tank from leaking in the technical field of ships. The structure comprises a heating coil, wherein a connecting sleeve is assembled at the end part of the heating coil; the heating coil is inserted into a hollow cavity of the connecting sleeve, the two ends of the connecting sleeve are arranged to be welding ends respectively, the welding ends are provided with first inner chamfers, and the welding ends form first inclined welding faces through the first inner chamfers; the outer wall of the heating coil and the first inclined welding surface of the connecting sleeve are fixed through welding; an annular first welding seam is formed between the outer wall of the heating coil and the first inclined welding face through welding, the section of the first welding seam is arranged to be a triangle, the triangle comprises an outer bottom edge and two outer inclined edges, the outer bottom edge is in contact with the outer wall of the heating coil, and one outer inclined edge is in contact with the first inclined welding face. The utility model has the advantages that the welding quality between the heating coil and the connecting sleeve is improved, and the leakage is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of ships, in particular to a welding sleeve structure for preventing hot oil leakage in an oil tank. Background Art

[0002] The oil tank of the methanol container ship is heated by a hot oil system. The heating coils installed in the oil tank need to be connected through connecting sleeves. The heating coils and the connecting sleeves are fixed by fillet welding. The welding quality is uneven and the position of the weld is prone to leakage, which can easily cause hot oil to leak into the oil tank in the later stage. Utility Model Content

[0003] The utility model aims to provide a welding sleeve structure which can prevent the hot oil in the oil tank from leaking, thereby improving the welding quality between the heating coil and the connecting sleeve.

[0004] In order to achieve the above-mentioned purpose of the utility model, the welding sleeve structure of the utility model for preventing hot oil leakage in the oil tank adopts the following technical solutions:

[0005] A welding sleeve structure for preventing hot oil leakage in an oil tank, comprising a heating coil, hot oil being arranged in the heating coil, and a connecting sleeve being assembled at the end of the heating coil; the connecting sleeve is arranged as a hollow structure, the heating coil is inserted into the hollow cavity of the connecting sleeve, and the two ends of the connecting sleeve are respectively arranged as welding ends, the welding ends are provided with a first inner chamfer, the welding ends form a first inclined welding surface through the first inner chamfer, and the outer edge of the first inclined welding surface exceeds the inner edge of the first inclined welding surface; the outer wall of the heating coil and the first inclined welding surface of the connecting sleeve are fixed by welding; a first annular weld is formed between the outer wall of the heating coil and the first inclined welding surface by welding, and the cross-section of the first weld is arranged as a triangle, and the triangle comprises an outer bottom edge and two outer inclined edges, the outer bottom edge contacts the outer wall of the heating coil, and one of the outer inclined edges contacts the first inclined welding surface.

[0006] Preferably, heating coils are inserted into both ends of the connecting sleeve respectively, and an end of one of the heating coils is fixed to the inner wall of the connecting sleeve by welding.

[0007] Preferably, the end of the heating coil is fillet-welded to the inner wall of the connecting sleeve, and the end of the heating coil is perpendicular to the inner wall of the connecting sleeve.

[0008] Preferably, a second inner chamfer is provided at the end of the heating coil, and a second inclined welding surface is formed at the end of the heating coil through the second inner chamfer, and the inner edge of the second inclined welding surface exceeds the outer edge of the second inclined welding surface; a second annular weld is formed between the inner wall of the connecting sleeve and the second inclined welding surface by welding, and the cross-section of the second weld is set to a triangle, which includes an inner base edge and two inner inclined edges, the inner base edge contacts the inner wall of the connecting sleeve, and one of the inner inclined edges contacts the second inclined welding surface.

[0009] Preferably, the acute angle formed between the second inclined welding surface and the inner wall of the connecting sleeve is 30 degrees.

[0010] Preferably, the acute angle formed between the first inclined welding surface and the outer wall of the heating coil is 30 degrees.

[0011] Preferably, the first inclined welding surface and the second inclined welding surface are both configured as smooth planes.

[0012] Preferably, the first inclined welding surface is provided with a plurality of first grooves; and the second inclined welding surface is provided with a plurality of second grooves.

[0013] Preferably, the end of the heating coil extends into the middle of the connecting sleeve.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model forms a first inclined welding surface at the welding end of the connecting sleeve by setting a first inner chamfer. During welding, a triangular first weld is formed between the outer wall of the heating coil and the first inclined welding surface of the connecting sleeve. The triangle includes an outer bottom edge and two outer inclined edges. The outer bottom edge contacts the outer wall of the heating coil, and one of the outer inclined edges contacts the first inclined welding surface. Therefore, the welding area between the outer wall of the heating coil and the connecting sleeve is increased, thereby improving the welding quality and further preventing the hot oil in the heating coil from leaking.

[0016] 2. The utility model performs welding between the end of the connecting sleeve and the outer wall of the heating coil. At the same time, the end of one of the heating coils extending into the end is welded and fixed to the inner wall of the connecting sleeve to ensure that the heating coil and the connecting sleeve are firmly connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0018] Figure 2 is a schematic diagram of the connecting sleeve;

[0019] Figure 3 for Figure 1 A magnified view of part A;

[0020] Figure 4 for Figure 1 A magnified view of part B;

[0021] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present utility model;

[0022] Figure 6 for Figure 5 Enlarged view of part C;

[0023] Figure 7 This is a schematic diagram of the structure of Embodiment 3 of the present utility model;

[0024] Figure 8 for Figure 7 A magnified view of the D portion;

[0025] Fig. 9 This is a schematic diagram of the structure of Embodiment 4 of the present utility model;

[0026] Fig.10 for Fig. 9 Enlarged view of part E.

[0027] Among them, 1 is a connecting sleeve, 2 is a first inclined welding surface, 3 is a first weld, 301 is an outer bottom edge, 302 is an outer inclined edge, 303 is a first groove, 4 is a heating coil, 5 is a second inclined welding surface, 6 is a second weld, 601 is an inner bottom edge, 602 is an inner inclined edge, and 603 is a second groove. DETAILED DESCRIPTION

[0028] The present invention is further explained below in conjunction with specific implementation methods. It should be understood that these implementation methods are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0029] Example 1

[0030] like Figure 1-4As shown, a welding sleeve structure for preventing hot oil leakage in an oil tank comprises a heating coil 4, hot oil is arranged in the heating coil 4, and a connecting sleeve 1 is assembled at the end of the heating coil 4; the connecting sleeve 1 is arranged as a hollow structure, the heating coil 4 is inserted into the hollow cavity of the connecting sleeve 1, and the end of the heating coil 4 extends into the middle of the connecting sleeve 1; the two ends of the connecting sleeve 1 are respectively arranged as welding ends, the welding ends are provided with a first inner chamfer, and the welding ends form a first inclined welding surface 2 through the first inner chamfer, the acute angle formed between the first inclined welding surface 2 and the outer wall of the heating coil 4 is 30 degrees, the outer edge of the first inclined welding surface 2 exceeds the inner edge of the first inclined welding surface 2, and the first inclined welding Surface 2 is set as a smooth plane; the outer wall of the heating coil 4 is fixed to the first inclined welding surface 2 of the connecting sleeve 1 by welding; the two ends of the connecting sleeve 1 are respectively inserted into the heating coil 4, and one end of the heating coil 4 is fillet-welded to the inner wall of the connecting sleeve 1, and the end of the heating coil 4 is perpendicular to the inner wall of the connecting sleeve 1; a first annular weld 3 is formed between the outer wall of the heating coil 4 and the first inclined welding surface 2 by welding, and the cross-section of the first weld 3 is set as a triangle, which includes an outer bottom edge 301 and two outer inclined edges 302, the outer bottom edge 301 contacts the outer wall of the heating coil 4, and one of the outer inclined edges 302 contacts the first inclined welding surface 2.

[0031] Example 2

[0032] like Figure 5-6As shown, a welding sleeve structure for preventing hot oil leakage in an oil tank comprises a heating coil 4, hot oil is arranged in the heating coil 4, and a connecting sleeve 1 is assembled at the end of the heating coil 4; the connecting sleeve 1 is set as a hollow structure, the heating coil 4 is inserted into the hollow cavity of the connecting sleeve 1, and the end of the heating coil 4 extends into the middle part of the connecting sleeve 1; the two ends of the connecting sleeve 1 are respectively set as welding ends, the welding ends are provided with a first inner chamfer, and the welding ends form a first inclined welding surface 2 through the first inner chamfer, the acute angle formed between the first inclined welding surface 2 and the outer wall of the heating coil 4 is 30 degrees, and the outer edge of the first inclined welding surface 2 exceeds the inner edge of the first inclined welding surface 2; the outer wall of the heating coil 4 is fixed to the first inclined welding surface 2 of the connecting sleeve 1 by welding; a first annular weld 3 is formed between the outer wall of the heating coil 4 and the first inclined welding surface 2 by welding, and the cross-section of the first weld 3 is set as a triangle, and the triangle includes an outer bottom edge 301 and two outer inclined edges 302, and the outer The bottom edge 301 contacts the outer wall of the heating coil 4, and one of the outer inclined edges 302 contacts the first inclined welding surface 2; the two ends of the connecting sleeve 1 are respectively inserted into the heating coil 4, and the end of one of the heating coils 4 is welded and fixed to the inner wall of the connecting sleeve 1; a second inner chamfer is set at the end of the heating coil 4, and the end of the heating coil 4 forms a second inclined welding surface 5 through the second inner chamfer, and the acute angle formed between the second inclined welding surface 5 and the inner wall of the connecting sleeve 1 is 30 degrees, and the inner edge of the second inclined welding surface 5 exceeds the outer edge of the second inclined welding surface 5, and the first inclined welding surface 2 and the second inclined welding surface 5 are both set to smooth planes; a second annular weld 6 is formed between the inner wall of the connecting sleeve 1 and the second inclined welding surface 5 by welding, and the cross-section of the second weld 6 is set to a triangle, which includes an inner bottom edge 601 and two inner inclined edges 602, and the inner bottom edge 601 contacts the inner wall of the connecting sleeve 1, and one of the inner inclined edges 602 contacts the second inclined welding surface 5.

[0033] Example 3

[0034] like Figure 7-8As shown, a welding sleeve structure for preventing hot oil leakage in an oil tank comprises a heating coil 4, hot oil is arranged in the heating coil 4, and a connecting sleeve 1 is assembled at the end of the heating coil 4; the connecting sleeve 1 is arranged as a hollow structure, the heating coil 4 is inserted into the hollow cavity of the connecting sleeve 1, and the end of the heating coil 4 extends into the middle of the connecting sleeve 1; the two ends of the connecting sleeve 1 are respectively arranged as welding ends, the welding ends are provided with a first inner chamfer, and the welding ends form a first inclined welding surface 2 through the first inner chamfer, the acute angle formed between the first inclined welding surface 2 and the outer wall of the heating coil 4 is 30 degrees, the outer edge of the first inclined welding surface 2 exceeds the inner edge of the first inclined welding surface 2, and the first inclined welding surface 2 A plurality of first grooves 303 are provided; the outer wall of the heating coil 4 is fixed to the first inclined welding surface 2 of the connecting sleeve 1 by welding; the two ends of the connecting sleeve 1 are respectively inserted into the heating coil 4, and one end of the heating coil 4 is fillet-welded to the inner wall of the connecting sleeve 1, and the end of the heating coil 4 is perpendicular to the inner wall of the connecting sleeve 1; a first annular weld 3 is formed between the outer wall of the heating coil 4 and the first inclined welding surface 2 by welding, and the cross-section of the first weld 3 is set to be a triangle, which includes an outer base 301 and two outer inclined edges 302, the outer base 301 contacts the outer wall of the heating coil 4, and one of the outer inclined edges 302 contacts the first inclined welding surface 2.

[0035] Example 4

[0036] like Figure 9-10As shown, a welding sleeve structure for preventing hot oil leakage in an oil tank comprises a heating coil 4, hot oil is arranged in the heating coil 4, and a connecting sleeve 1 is assembled at the end of the heating coil 4; the connecting sleeve 1 is set as a hollow structure, the heating coil 4 is inserted into the hollow cavity of the connecting sleeve 1, and the end of the heating coil 4 extends into the middle part of the connecting sleeve 1; the two ends of the connecting sleeve 1 are respectively set as welding ends, the welding ends are provided with a first inner chamfer, and the welding ends form a first inclined welding surface 2 through the first inner chamfer, the acute angle formed between the first inclined welding surface 2 and the outer wall of the heating coil 4 is 30 degrees, and the outer edge of the first inclined welding surface 2 exceeds the inner edge of the first inclined welding surface 2; the outer wall of the heating coil 4 is fixed to the first inclined welding surface 2 of the connecting sleeve 1 by welding; a first annular weld 3 is formed between the outer wall of the heating coil 4 and the first inclined welding surface 2 by welding, and the cross-section of the first weld 3 is set as a triangle, and the triangle includes an outer bottom edge 301 and two outer inclined edges 302, and the outer bottom edge 301 is connected to the outer wall of the heating coil 4. The outer wall of the heating coil 4 is touched, and one of the outer inclined edges 302 contacts the first inclined welding surface 2; the two ends of the connecting sleeve 1 are respectively inserted into the heating coil 4, and the end of one of the heating coil 4 is welded and fixed to the inner wall of the connecting sleeve 1; a second inner chamfer is set at the end of the heating coil 4, and the end of the heating coil 4 forms a second inclined welding surface 5 through the second inner chamfer, and the acute angle formed between the second inclined welding surface 5 and the inner wall of the connecting sleeve 1 is 30 degrees, and the inner edge of the second inclined welding surface 5 exceeds the outer edge of the second inclined welding surface 5, and the first inclined welding surface 2 is provided with a plurality of first grooves 303; the second inclined welding surface is provided with a plurality of second grooves 603; a second annular weld 6 is formed between the inner wall of the connecting sleeve 1 and the second inclined welding surface 5 by welding, and the cross-section of the second weld 6 is set to a triangle, which includes an inner bottom edge 601 and two inner inclined edges 602, the inner bottom edge 601 contacts the inner wall of the connecting sleeve 1, and one of the inner inclined edges 602 contacts the second inclined welding surface 5.

[0037] The specific working process and principle of the utility model are as follows: welding is performed between the end of the connecting sleeve 1 and the outer wall of the heating coil 4, and at the same time, the end of one of the heating coils 4 extending into the end is welded and fixed to the inner wall of the connecting sleeve 1. The welding quality between the connecting sleeve 1 and the heating coil 4 is ensured by external welding, and the firm docking between the heating coil and the connecting sleeve is further ensured by internal welding of one of the heating coils 4. During external welding, a first inner chamfer is set so that the welding end of the connecting sleeve 1 forms a first inclined welding surface 2. During welding, a triangular first weld is formed between the outer wall of the heating coil 4 and the first inclined welding surface 2 of the connecting sleeve 1. The triangle includes an outer bottom edge 301 and two outer inclined edges 302. The outer bottom edge 301 contacts the outer wall of the heating coil 4, and one of the outer inclined edges 302 contacts the first inclined welding seam. Surface 2, thereby increasing the welding area between the outer wall of the heating coil 4 and the end of the connecting sleeve 1; during internal welding, it can be fixed by ordinary fillet welding. Preferably, a second inner chamfer can be set, and the end of the heating coil 4 forms a second inclined welding surface 5, thereby increasing the welding area between the end of the heating coil 4 and the inside of the connecting sleeve 1; and the first inclined welding surface 2 and the second inclined welding surface 5 can be set as a smooth plane. Preferably, a plurality of first grooves 303 can be set on the first inclined welding surface 2, and a plurality of second grooves 603 can be set on the second inclined welding surface. Through the setting of the first grooves 303 and the second grooves 603, during welding, the welding rod is melted and filled into the first grooves 303 and the second grooves 603, thereby further increasing the contact area and making the melted welding rod more tightly bonded to the metal surface to ensure the welding quality.

[0038] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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 operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0040] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A welding sleeve structure for preventing hot oil leakage in an oil tank, comprising a heating coil, hot oil is arranged in the heating coil, and a connecting sleeve is installed at the end of the heating coil; characterized in that: The connecting sleeve is configured as a hollow structure, and the heating coil is inserted into the hollow cavity of the connecting sleeve. The two ends of the connecting sleeve are respectively configured as welding ends, and the welding ends are provided with a first inner chamfer. The welding end forms a first inclined welding surface through the first inner chamfer, and the outer edge of the first inclined welding surface exceeds the inner edge of the first inclined welding surface; the outer wall of the heating coil and the first inclined welding surface of the connecting sleeve are fixed by welding; a first annular weld is formed between the outer wall of the heating coil and the first inclined welding surface by welding, and the cross-section of the first weld is configured as a triangle, which includes an outer base and two outer inclined sides, the outer base contacts the outer wall of the heating coil, and one of the outer inclined sides contacts the first inclined welding surface.

2. The welding sleeve structure for preventing hot oil leakage in an oil tank according to claim 1 is characterized in that: The two ends of the connecting sleeve are respectively inserted into the heating coils, and the end of one heating coil is fixed to the inner wall of the connecting sleeve by welding.

3. The welding sleeve structure for preventing hot oil leakage in the oil tank according to claim 2 is characterized in that: The end of the heating coil is fillet-welded to the inner wall of the connecting sleeve, and the end of the heating coil is perpendicular to the inner wall of the connecting sleeve.

4. The welding sleeve structure for preventing hot oil leakage in an oil tank according to claim 2 is characterized in that: A second inner chamfer is set at the end of the heating coil, and a second inclined welding surface is formed at the end of the heating coil through the second inner chamfer, and the inner edge of the second inclined welding surface exceeds the outer edge of the second inclined welding surface; a second annular weld is formed between the inner wall of the connecting sleeve and the second inclined welding surface by welding, and the cross-section of the second weld is set to be a triangle, which includes an inner base edge and two inner inclined edges, the inner base edge contacts the inner wall of the connecting sleeve, and one of the inner inclined edges contacts the second inclined welding surface.

5. The welding sleeve structure for preventing hot oil leakage in an oil tank according to claim 4 is characterized in that: The acute angle formed between the second inclined welding surface and the inner wall of the connecting sleeve is 30 degrees.

6. The welding sleeve structure for preventing hot oil leakage in an oil tank according to claim 1 is characterized in that: The acute angle formed between the first inclined welding surface and the outer wall of the heating coil is 30 degrees.

7. The welding sleeve structure for preventing hot oil leakage in an oil tank according to claim 4 is characterized in that: The first inclined welding surface and the second inclined welding surface are both configured as smooth planes.

8. The welding sleeve structure for preventing hot oil leakage in an oil tank according to claim 4 is characterized in that: The first inclined welding surface is provided with a plurality of first grooves; the second inclined welding surface is provided with a plurality of second grooves.

9. The welding sleeve structure for preventing hot oil leakage in an oil tank according to claim 2 is characterized in that: The end of the heating coil extends into the middle of the connecting sleeve.

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