Double-layer sleeve structure for ship pipeline to penetrate through liquid tank and using method of double-layer sleeve structure

Abstract

The double-layer sleeve structure comprises an inner pipe module and a protective sleeve module, the inner pipe module comprises an inner pipe, end sealing plates and a supporting ring, the end sealing plates are arranged at the two ends of the inner pipe correspondingly, and the supporting ring is arranged on the side face of the middle of the inner pipe; the protective sleeve module comprises a protective sleeve, a cabin penetrating sleeve and a connecting sleeve, the protective sleeve comprises a first protective sleeve and a second protective sleeve, the cabin penetrating sleeve is arranged on the outer side of one end of the first protective sleeve, and the inner wall of the first protective sleeve provided with the cabin penetrating sleeve is connected with one end of the inner pipe through an end sealing plate; the other end of the first protective sleeve is connected with one end of a second protective sleeve through a connecting sleeve, a cabin penetrating sleeve is arranged on the outer side of the other end of the second protective sleeve, and the inner wall of the second protective sleeve of the cabin penetrating sleeve is connected with one end of the inner pipe through an end sealing plate. Through the integral structure of the double-layer sleeve, the influence of corrosion leakage of a non-liquid tank medium pipeline penetrating through the liquid tank on the liquid tank is avoided, and the use safety is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of ship construction, and in particular relates to a double-layer casing structure for ship pipelines penetrating a liquid tank and a use method thereof. Background Art

[0002] According to ship design specifications, pipelines should try not to pass through tanks with different media from the pipeline, such as bilge pipes, air pipes, overflow pipes and measuring pipes through ballast tanks and fuel tanks. Ballast pipes through fuel tanks and fuel pipes through ballast tanks. If it is unavoidable, conventional design requires thickening of pipelines, or tank wall structures specially designed for passing through pipelines. Even if the pipelines are thickened and sleeve welding is adopted, the long-term reliability of the pipelines cannot be fully guaranteed due to the long-term immersion of the pipelines in the tanks. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and to provide a double-layer casing structure and a method of use for ship pipelines passing through liquid tanks. The present invention can prevent the corrosion and leakage of non-liquid tank medium pipelines passing through the liquid tank from affecting the medium in the liquid tank through the integrated structure of the double-layer casing, and simplify the installation process of the liquid tank penetrating pipeline on board, thereby improving the safety of use.

[0004] In order to achieve the above invention purpose, the technical solution provided by the present invention is as follows:

[0005] A double-layer casing structure for ship pipelines passing through liquid tanks, comprising an inner tube module and a protective casing module, the inner tube module comprising an inner tube, an end sealing plate, and a support ring, the two ends of the inner tube are respectively provided with end sealing plates, and the middle side of the inner tube is provided with a support ring, the protective casing module comprises a protective casing, a tank-penetrating casing and a connecting casing, the protective casing comprising a first protective casing and a second protective casing, the outer side of one end of the first protective casing is provided with a tank-penetrating casing, the inner wall of the first protective casing provided with the tank-penetrating casing is connected to one end of the inner tube through the end sealing plate, the other end of the first protective casing is connected to one end of the second protective casing through the connecting casing, the outer side of the other end of the second protective casing is provided with a tank-penetrating casing, and the inner wall of the second protective casing provided with the tank-penetrating casing is connected to one end of the inner tube through the end sealing plate.

[0006] Furthermore, connecting flanges are provided at both ends of the inner tube, and a support ring is provided in the middle of the inner tube. Circular holes are symmetrically opened on the end surfaces of the support ring, and the support ring is an annular structure as a whole.

[0007] Furthermore, the end sealing plate is an annular structure as a whole, the outer side of the end sealing plate is fixedly connected to the inner wall of the protective sleeve, and the inner side of the end sealing plate is fixedly connected to the outer side of the inner tube.

[0008] Furthermore, the tank penetration casing is an annular structure as a whole, the outer side surface of the tank penetration casing is welded and fixed to the liquid tank bulkhead, and the inner wall of the tank penetration casing is respectively welded and fixed to the outer sides of the first protective casing and the second protective casing.

[0009] Furthermore, the connecting sleeve is an annular structure as a whole, and two ends of the inner wall of the connecting sleeve are respectively connected and fixed to one end of the first protective sleeve and the second protective sleeve.

[0010] Furthermore, a tightness test welding seat is arranged on the outer side of one end of the first protective sleeve, and the tightness test welding seat and the cabin penetration sleeve on the first protective sleeve are arranged on the same side.

[0011] A method for using a double-layer casing for a ship pipeline to penetrate a liquid tank, the method specifically comprising the following steps:

[0012] S1, prepare a double-layer casing structure for a ship pipeline passing through a liquid tank, comprising an inner tube module and a protective casing module, the inner tube module comprising an inner tube, an end sealing plate, and a support ring, the two ends of the inner tube are respectively provided with end sealing plates, and the side of the middle of the inner tube is provided with a support ring, the protective casing module comprises a protective casing, a tank-penetrating casing and a connecting casing, the protective casing comprises a first protective casing and a second protective casing, the outer side of one end of the first protective casing is provided with a tank-penetrating casing, the inner wall of the first protective casing provided with the tank-penetrating casing is connected to one end of the inner tube through the end sealing plate, the other end of the first protective casing is connected to one end of the second protective casing through the connecting casing, the outer side of the other end of the second protective casing is provided with a tank-penetrating casing, and the inner wall of the second protective casing provided with the tank-penetrating casing is connected to one end of the inner tube through the end sealing plate;

[0013] S2, after the double-layer casing structure is manufactured, the double-layer casing is subjected to a tightness test using a tightness test welding seat. After the tightness test is qualified, the double-layer casing is installed;

[0014] S3, weld and fix the outer side of the penetrating casing to the tank bulkhead. After the double-layer casing is fixedly connected to the tank, connect the flanges at both ends of the double-layer casing to the flanges of the external pipeline to complete the installation of the double-layer casing.

[0015] Based on the above technical solution, the double-layer casing structure and the use method for ship pipelines passing through liquid tanks in the present invention have achieved the following technical advantages through practical application:

[0016] 1. The double-layer casing structure for ship pipelines penetrating liquid tanks of the present invention can prevent the corrosion and leakage of non-liquid tank medium pipelines penetrating the liquid tank from affecting the medium in the liquid tank, and simplify the installation process of the liquid tank penetrating pipeline on board, thereby improving the safety of use.

[0017] 2. The double-layer casing structure for ship pipelines passing through liquid tanks of the present invention connects the inner pipe into a whole pipe, so that the internal pipe connection avoids the risk of leakage caused by welding connections of multiple sections of pipes; in addition, the material and coating requirements of the external protective casing are the same as those of the liquid tank bulkhead, which greatly prolongs the service life of the protective pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention discloses a double-layer casing structure for a ship pipeline to penetrate a liquid tank and a double-layer casing structure in a use method.

[0019] Figure 2 The present invention discloses a double-layer casing structure for a ship pipeline penetrating a liquid tank and an end sealing plate structure in a method of using the double-layer casing structure.

[0020] Figure 3 The present invention discloses a double-layer casing structure for a ship pipeline penetrating a liquid tank and a supporting ring structure diagram in a use method thereof.

[0021] Figure 4 The present invention is a double-layer casing structure for a ship pipeline penetrating a liquid tank and a first protective casing structure in a method of use.

[0022] Figure 5 The present invention is a double-layer casing structure for a ship pipeline penetrating a liquid tank and a second protective casing structure in a use method. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific examples shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0024] like Figure 1-5As shown, the present invention belongs to a double-layer casing structure for ship pipelines to penetrate liquid tanks, including an inner tube module and a protective casing module, the inner tube module including an inner tube 7, an end sealing plate 1 and a support ring 2, the inner tube 7 is provided with end sealing plates 1 at both ends, the inner tube 7 is provided with a support ring 2 on the side of the middle part, the protective casing module includes a protective casing, a tank-penetrating casing 6 and a connecting casing 3, the protective casing includes a first protective casing 9 and a second protective casing 8, the first protective casing 9 is provided with a tank-penetrating casing 6 on the outside of one end, and the tank-penetrating casing 6 is provided on the outside of the second protective casing 8. The inner wall of a protective sleeve 9 is connected to one end of the inner tube 7 through an end sealing plate 1, the other end of the first protective sleeve 9 is connected to one end of a second protective sleeve 8 through a connecting sleeve 3, a tank penetration sleeve 6 is arranged on the outer side of the other end of the second protective sleeve 8, and the inner wall of the second protective sleeve 8 provided with the tank penetration sleeve 6 is connected to one end of the inner tube 7 through the end sealing plate 1; the integral structure of the double-layer sleeve can prevent the corrosion and leakage of the non-liquid tank medium pipeline penetrating the liquid tank from affecting the medium in the liquid tank, and simplify the installation process of the tank penetrating pipeline on board, thereby improving the safety of use.

[0025] Connecting flanges 5 are provided at both ends of the inner tube 7, and a support ring 2 is provided in the middle of the inner tube 7. Circular holes 21 are symmetrically opened on the end surface of the support ring 2, and the support ring 2 is an annular structure as a whole. By connecting the inner tube 7 as a whole pipeline, the internal connecting pipe avoids the risk of leakage caused by welding connections of multiple sections of pipelines. In addition, the material and coating requirements of the external protective sleeve are the same as those of the liquid tank bulkhead, which greatly extends the service life of the protective tube.

[0026] The end sealing plate 1 is an annular structure as a whole. The outer side of the end sealing plate 1 is fixedly connected to the inner wall of the protective sleeve, and the inner side of the end sealing plate 1 is fixedly connected to the outer side of the inner tube 7.

[0027] The tank penetration sleeve 6 is an annular structure as a whole, the outer side surface of the tank penetration sleeve 6 is welded and fixed to the liquid tank bulkhead, and the inner wall of the tank penetration sleeve 6 is welded and fixed to the outer sides of the first protective sleeve 9 and the second protective sleeve 8 respectively.

[0028] The connecting sleeve 3 is an annular structure as a whole, and the two ends of the inner wall of the connecting sleeve 3 are respectively connected and fixed to one end of the first protective sleeve 9 and the second protective sleeve 8.

[0029] A tightness test welding seat 4 is arranged on the outer side of one end of the first protective sleeve 9 , and the tightness test welding seat 4 and the cabin penetration sleeve 6 on the first protective sleeve 9 are arranged on the same side.

[0030] A method for using a double-layer casing for a ship pipeline to penetrate a liquid tank, the method specifically comprising the following steps:

[0031] S1, prepare a double-layer casing structure for ship pipelines passing through liquid tanks, including an inner tube module and a protective casing module, the inner tube module including an inner tube 7, an end sealing plate 1, and a support ring 2, the inner tube 7 is respectively provided with end sealing plates 1 at both ends, and the inner tube 7 is provided with a support ring 2 on the side of the middle part, the protective casing module includes a protective casing, a tank penetration casing 6 and a connecting casing 3, the protective casing includes a first protective casing 9 and a second protective casing 8, the first protective casing 9 is provided with a tank penetration casing 6 on the outer side of one end, the inner wall of the first protective casing 9 provided with the tank penetration casing 6 is connected to one end of the inner tube 7 through the end sealing plate 1, the other end of the first protective casing 9 is connected to one end of the second protective casing 8 through the connecting casing 3, the other end of the second protective casing 8 is provided with a tank penetration casing 6 on the outer side, and the inner wall of the second protective casing 8 provided with the tank penetration casing 6 is connected to one end of the inner tube 7 through the end sealing plate 1;

[0032] S2, after the double-layer casing structure is manufactured, the double-layer casing is subjected to a tightness test using the tightness test welding seat 4. After the tightness test is qualified, the double-layer casing is installed;

[0033] S3, the outer side of the tank penetration casing 6 is welded and fixed to the tank bulkhead. After the double-layer casing is fixedly connected to the tank, the flanges at both ends of the double-layer casing are connected to the flanges of the external pipeline to complete the installation of the double-layer casing.

[0034] The material and coating requirements for the protective sleeve are the same as those for the tank bulkhead.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A double-layer casing structure for ship pipelines to penetrate liquid tanks, characterized in that: It includes an inner tube module and a protective sleeve module, the inner tube module includes an inner tube, an end sealing plate, and a supporting ring, the two ends of the inner tube are respectively provided with end sealing plates, and the side of the middle part of the inner tube is provided with a supporting ring, the protective sleeve module includes a protective sleeve, a cabin-penetrating sleeve and a connecting sleeve, the protective sleeve includes a first protective sleeve and a second protective sleeve, the outer side of one end of the first protective sleeve is provided with a cabin-penetrating sleeve, the inner wall of the first protective sleeve provided with the cabin-penetrating sleeve is connected to one end of the inner tube through the end sealing plate, the other end of the first protective sleeve is connected to one end of the second protective sleeve through the connecting sleeve, the outer side of the other end of the second protective sleeve is provided with a cabin-penetrating sleeve, the inner wall of the second protective sleeve provided with the cabin-penetrating sleeve is connected to one end of the inner tube through the end sealing plate.

2. A double-layer casing structure for ship pipelines penetrating liquid tanks according to claim 1, characterized in that: Connecting flanges are respectively arranged at both ends of the inner tube, and a supporting ring is arranged in the middle of the inner tube. Circular holes are symmetrically opened on the end faces of the supporting ring, and the supporting ring is an annular structure as a whole.

3. A double-layer casing structure for ship pipelines penetrating liquid tanks according to claim 2, characterized in that: The end sealing plate is an annular structure as a whole, the outer side of the end sealing plate is fixedly connected to the inner wall of the protective sleeve, and the inner side of the end sealing plate is fixedly connected to the outer side of the inner tube.

4. A double-layer casing structure for ship pipelines penetrating liquid tanks according to claim 1, characterized in that: The tank penetration sleeve is an annular structure as a whole, the outer side surface of the tank penetration sleeve is welded and fixed to the liquid tank bulkhead, and the inner wall of the tank penetration sleeve is respectively welded and fixed to the outer sides of the first protective sleeve and the second protective sleeve.

5. A double-layer casing structure for ship pipelines penetrating liquid tanks according to claim 1, characterized in that: The connecting sleeve is an annular structure as a whole, and the two ends of the inner wall of the connecting sleeve are respectively connected and fixed to one end of the first protective sleeve and the second protective sleeve.

6. A double-layer casing structure for ship pipelines penetrating liquid tanks according to claim 1, characterized in that: A tightness test welding seat is arranged on the outer side of one end of the first protective sleeve, and the tightness test welding seat and the cabin penetration sleeve on the first protective sleeve are arranged on the same side.

7. A method for using a double-layer casing for a ship pipeline to penetrate a liquid tank, characterized in that: The method specifically comprises the following steps: S1, prepare a double-layer casing structure for a ship pipeline passing through a liquid tank, comprising an inner tube module and a protective casing module, the inner tube module comprising an inner tube, an end sealing plate, and a support ring, the two ends of the inner tube are respectively provided with end sealing plates, and the side of the middle of the inner tube is provided with a support ring, the protective casing module comprises a protective casing, a tank-penetrating casing and a connecting casing, the protective casing comprises a first protective casing and a second protective casing, the outer side of one end of the first protective casing is provided with a tank-penetrating casing, the inner wall of the first protective casing provided with the tank-penetrating casing is connected to one end of the inner tube through the end sealing plate, the other end of the first protective casing is connected to one end of the second protective casing through the connecting casing, the outer side of the other end of the second protective casing is provided with a tank-penetrating casing, and the inner wall of the second protective casing provided with the tank-penetrating casing is connected to one end of the inner tube through the end sealing plate; S2, after the double-layer casing structure is manufactured, the double-layer casing is subjected to a tightness test using a tightness test welding seat. After the tightness test is qualified, the double-layer casing is installed; S3, weld and fix the outer side of the penetrating casing to the tank bulkhead. After the double-layer casing is fixedly connected to the tank, connect the flanges at both ends of the double-layer casing to the flanges of the external pipeline to complete the installation of the double-layer casing.

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