Welding repair device for leakage of oil tank bottom plate

Abstract

The utility model belongs to the field of metal container repairing in the petrochemical industry, and provides an oil tank bottom plate leakage welding repairing device which comprises an oil tank bottom plate and a sealing assembly. The sealing assembly comprises a sealing plate, a flow guide pipe seat and an inner plugging head; a connecting hole is formed in a leakage opening of the oil tank bottom plate. A sleeve hole is formed in the surface of the sealing plate. The sealing plate is mounted at the oil tank bottom plate; the flow guide pipe seat is mounted at the connecting hole and the sleeve hole; the inner plugging head is mounted in the flow guide pipe seat; the sealing assembly is arranged, the flow guide pipe is inserted into the flow guide pipe base, inert gas with certain pressure can be introduced into the leak of the bottom plate of the oil tank, filling is conducted below the bottom plate of an oil tank container, flammable and explosive liquid can be pushed out, air and diluted air can also be pushed out, combustion and explosion are avoided in the welding process, and the welding quality is improved. After gas filling for a certain time, the sealing plate and the flow guide pipe seat can be welded in a safe environment, and the effects of leak repairing and strength increasing of the oil tank bottom plate are achieved.

Description

Technical Field

[0001] The utility model belongs to the field of metal container repair in petrochemical industry, in particular to a leakage welding repair device for oil tank bottom plate. Background Art

[0002] The bottom plate of a metal container is very easy to corrode and form perforations or cracks in the welds, causing leakage of flammable and explosive liquids. In order to repair these holes, it is necessary to carry out welding repairs on the metal bottom plate in the event of leakage of flammable and explosive liquids. However, the explosion-proof problem of welding needs to be solved. The bottom plate of a common metal container has uneven gaps between it and the foundation of the metal container, and flammable and explosive liquids and air are trapped in the middle, and it is very difficult to remove them. When welding on the bottom plate of a metal container, the electric welding sparks and high temperature on the bottom plate can easily cause combustion and explosion.

[0003] The existing method for repairing the bottom plate of an oil tank has few safety measures, and basically involves welding directly on the bottom plate. If repairs and welding are performed without perfect safety measures, there will be great safety hazards.

[0004] Therefore, those skilled in the art have proposed a tank bottom plate leakage welding repair device to solve the problems raised in the background art. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an oil tank bottom plate leakage welding repair device to solve the drawbacks and problems of fewer safety measures in the oil tank bottom plate repair method in the prior art. If repairs and welding are carried out blindly without perfect safety measures, explosion and combustion accidents are very likely to occur.

[0006] A welding repair device for leaking oil tank bottom plate comprises an oil tank bottom plate and a sealing assembly; the sealing assembly comprises a sealing plate, a guide pipe seat and an inner sealing plug; a connecting hole is provided at the leakage port of the oil tank bottom plate, and a sleeve hole is provided on the surface of the sealing plate; the sealing plate is installed at the oil tank bottom plate, the guide pipe seat is installed at the connecting hole and the sleeve hole; and the inner sealing plug is installed in the guide pipe seat.

[0007] Preferably, a flow guide pipe is installed inside the flow guide pipe seat.

[0008] Preferably, the sealing plate is connected to the oil tank bottom plate by welding, and the guide pipe seat is connected to the sealing plate by welding.

[0009] Preferably, the flow guide pipe is plugged and installed in the flow guide pipe seat.

[0010] Preferably, the guide tube and the inner sealing head are both provided with external threads on their circumferences, the guide tube seat inner wall is provided with internal threads, the guide tube and the inner sealing head are both threadedly matched with the guide tube seat, and an internal hexagonal notch is provided on the surface of the inner sealing head.

[0011] Preferably, the sealing plate is a circular plate structure.

[0012] Preferably, the sealing plate is a square plate structure.

[0013] Preferably, the sealing plate is an irregular plate structure.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model sets a sealing component, connects the guide tube through the guide tube seat, and can pass a certain pressure of inert gas into the hole in the bottom plate of the oil tank. It is filled under the bottom plate of the oil tank container, which can not only push out flammable and explosive liquids, but also push out air and dilution air, avoiding combustion and explosion during welding. After a certain period of gas filling, the sealing plate and the guide tube seat can be welded in a safe environment. After the sealing plate is welded, it plays a role in filling leaks in the bottom plate of the oil tank and increasing the strength.

[0016] 2. The utility model provides an internal thread in the guide tube seat, so that the guide tube and the inner sealing plug can not only be plugged into the guide tube seat, but also be connected by threaded matching, thereby improving the connection stability of the guide tube and the inner sealing plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of installing a guide tube for the guide tube seat;

[0018] Figure 2 Schematic diagram of installing an internal sealing plug on the guide pipe seat.

[0019] In the figure:

[0020] 1. Oil tank bottom plate; 101. Connection hole; 2. Sealing plate; 201. Socket hole; 3. Flow guide pipe seat; 4. Flow guide pipe; 5. Internal sealing plug; 6. Internal thread. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] Embodiment 1: As shown in the attached Figure 1 To Attachment Figure 2 As shown: The utility model provides a leakage welding repair device for an oil tank bottom plate, comprising an oil tank bottom plate 1 and a sealing assembly;

[0023] The sealing assembly includes a sealing plate 2, a guide pipe seat 3 and an inner sealing head 5, wherein the sealing plate 2 is a circular, square or irregularly shaped plate structure; a connecting hole 101 is opened at the leakage port of the oil tank bottom plate 1, and the connecting hole 101 is opened at the leakage port of the oil tank bottom plate 1 by an explosion-proof electric drill, and a sleeve hole 201 is opened on the surface of the sealing plate 2, and the aperture of the sleeve hole 201 is the same as that of the connecting hole 101; the sealing plate 2 is installed at the oil tank bottom plate 1, and the guide pipe seat 3 is installed at the connecting hole 101 and the sleeve hole 201; and the inner sealing head 5 is installed in the guide pipe seat 3.

[0024] A flow guide pipe 4 is installed inside the flow guide pipe seat 3. Before installing the internal sealing head 5, the flow guide pipe 4 is inserted into the flow guide pipe seat 3 to facilitate the introduction of inert gas in the external gas tank; the sealing plate 2 is welded to the oil tank bottom plate 1, the flow guide pipe seat 3 is welded to the sealing plate 2, and the flow guide pipe 4 is plugged and installed in the flow guide pipe seat 3.

[0025] As can be seen from the above, an explosion-proof electric drill is used to drill holes in the oil tank bottom plate 1 that need to be repaired, and internal tapping is performed. Before welding, the guide pipe seat 3 is threadedly installed at the drilled hole in the oil tank bottom plate 1, and the guide pipe 4 is plugged into the guide pipe seat 3. In the hole in the oil tank bottom plate 1, a certain pressure of inert gas is introduced, and filled under the bottom plate of the oil tank container. First, flammable and explosive liquids can be pushed out, and second, air and dilution air can be pushed out to avoid combustion and explosion during welding. After a certain period of gas filling; a sealing plate 2 is put on the side of the guide pipe seat 3 and connected through the sleeve hole 201; after the connection is completed, the guide pipe 4 is removed, and an internal sealing head 5 is installed in the guide pipe seat 3; and the sealing plate 2, the guide pipe seat 3 and the internal sealing head 5 are welded respectively; after the sealing plate 2 is welded, it plays a role in repairing the leak and increasing the strength of the oil tank bottom plate 1.

[0026] Embodiment 2: Based on Embodiment 1, external threads are arranged on the circumference of the flow guide tube 4 and the inner sealing head 5, an internal thread 6 is arranged on the inner wall of the flow guide tube seat 3, the flow guide tube 4 and the inner sealing head 5 are threadedly matched with the flow guide tube seat 3, and an internal hexagonal notch is opened on the surface of the inner sealing head 5.

[0027] As can be seen from the above, by providing the internal thread 6, the guide tube 4 and the internal sealing plug 5 can not only be plugged into the guide tube seat 3, but also be connected by threaded matching, thereby improving the connection stability of the guide tube 4 and the internal sealing plug 5.

[0028] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present invention.

[0029] In the description of the present utility model, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. 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 representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0033] In the drawings of the embodiments disclosed by the present invention, only the structures involved in the embodiments disclosed by the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A welding repair device for leaking oil tank bottom plate, characterized in that: It comprises an oil tank bottom plate (1) and a sealing assembly; The sealing assembly comprises a sealing plate (2), a flow guide pipe seat (3) and an inner sealing plug (5); a connection hole (101) is provided at the leakage port of the oil tank bottom plate (1), and a sleeve hole (201) is provided on the surface of the sealing plate (2); the sealing plate (2) is mounted on the oil tank bottom plate (1), and the flow guide pipe seat (3) is mounted on the connection hole (101) and the sleeve hole (201); and the inner sealing plug (5) is mounted in the flow guide pipe seat (3).

2. The oil tank bottom plate leakage welding repair device as claimed in claim 1, characterized in that: A flow guide pipe (4) is installed inside the flow guide pipe seat (3).

3. The oil tank bottom plate leakage welding repair device as claimed in claim 2, characterized in that: The sealing plate (2) is connected to the oil tank bottom plate (1) by welding, and the flow guide pipe seat (3) is connected to the sealing plate (2) by welding.

4. The oil tank bottom plate leakage welding repair device as claimed in claim 2, characterized in that: The flow guide pipe (4) is plugged and installed in the flow guide pipe seat (3).

5. The oil tank bottom plate leakage welding repair device as claimed in claim 2, characterized in that: The guide tube (4) and the inner sealing head (5) are both provided with external threads on their circumferential sides, the inner wall of the guide tube seat (3) is provided with internal threads (6), the guide tube (4) and the inner sealing head (5) are both threadedly matched with the guide tube seat (3), and an inner hexagonal notch is provided on the surface of the inner sealing head (5).

6. The oil tank bottom plate leakage welding repair device as claimed in claim 1, characterized in that: The sealing plate (2) is a circular plate structure.

7. The oil tank bottom plate leakage welding repair device as claimed in claim 1, characterized in that: The sealing plate (2) is a square plate structure.

8. The oil tank bottom plate leakage welding repair device as claimed in claim 1, characterized in that: The sealing plate (2) is an irregular plate structure.

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