Welding device for storage tank and application of welding device

Abstract

The invention discloses a welding device for a storage tank and application of the welding device, and belongs to the technical field of welding of tank openings of storage tanks of spent fuel elements. The welding device comprises a rack unit which comprises a working platform, a supporting frame arranged on the working platform and a rotating part arranged on the working platform; the lifting unit comprises a lifting plate arranged on the working platform, a drag chain arranged on the side face of the lifting plate and a welding part arranged on the lifting plate. By arranging the rotating part and the welding part, a welding gun can be aligned with a welding seam in the welding process, the size of the welding seam is accurately controlled through the welding cavity, the welding seam is uniform and attractive, cracks are avoided, stress concentration is effectively avoided, the welding firmness is improved, meanwhile, harmful gas is effectively prevented from escaping through the staggered exhaust grooves, and the welding quality is improved. And the environmental friendliness is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tank mouth welding of spent fuel elements, and in particular to a welding device for a tank and application thereof. Background Art

[0002] The high temperature gas-cooled reactor uses graphite-coated fuel balls as fuel elements and helium as coolant. It has the advantages of good safety, high power generation efficiency, and good economy. It has been listed as one of the fourth-generation reactor development reactors by the International Nuclear Energy Agency. Since the fuel elements of the high temperature gas-cooled reactor are different from those of the pressurized water reactor nuclear power plant, the spherical spent fuel elements discharged from the core need to be stored in a suitable spent fuel storage tank. In order to reduce the manufacturing cost of the spent fuel storage tank, the spent fuel storage tank is designed as a thin-walled container. In order to prevent the radioactive gas generated by the decay of the spent fuel from escaping into the external environment during storage, the tank plug and the boundary line of the tank mouth need to be welded and sealed. In the prior art, welding wire is mainly used for welding and sealing. The conveying mechanism is very complicated, making the entire device complex and bulky. In the welding process, there are often inaccurate connections, resulting in cracks at the welding point, causing internal gas to escape and cause environmental pollution. At the same time, the welding process relies too much on the welding experience of the operator, and it is impossible to achieve automated welding. The labor intensity is high and the work efficiency is low.

[0003] Therefore, the present invention provides a welding device for a storage tank and an application thereof, which provides a new idea for storage tank welding. Summary of the invention

[0004] In view of the above problems existing in the existing welding devices for storage tanks and their applications, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a welding device for a storage tank, which aims to solve the technical problem that in the welding process, there is often an inaccurate connection, which causes cracks in the welding position, resulting in the escape of internal gas and environmental pollution.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising:

[0007] A frame unit, comprising a working platform, a support frame arranged on the working platform, and a rotating part arranged on the working platform;

[0008] The lifting unit comprises a lifting plate arranged on the working platform, a drag chain arranged on the side of the lifting plate, and a welding part arranged on the lifting plate.

[0009] As a preferred solution of the welding device for storage tanks described in the present invention, the rotating part includes a rotating component arranged on the working platform, and a positioning component arranged on the rotating component.

[0010] As a preferred solution of the welding device for storage tanks described in the present invention, the rotating assembly includes a rotating platform arranged on the working platform, a mounting base plate arranged on the rotating platform, and a fixing plate arranged on the mounting base plate.

[0011] As a preferred solution of the welding device for a storage tank of the present invention, the positioning assembly includes a positioning groove arranged on the fixing plate, a welding cavity arranged on the fixing plate, and a positioning cavity arranged on the fixing plate;

[0012] The positioning grooves are provided in two groups.

[0013] As a preferred solution of the welding device for storage tanks described in the present invention, the welding portion includes a protection component arranged on the lifting plate, and a welding component arranged on the protection component.

[0014] As a preferred solution of the welding device for storage tanks described in the present invention, the protection assembly includes a fixed flange arranged on the lifting plate, a protection cover arranged on the fixed flange, and a connecting shaft arranged on the fixed flange.

[0015] As a preferred embodiment of the welding device for storage tanks described in the present invention, the welding assembly includes a welding gun arranged inside the protective cover, a positioning cone head arranged on the connecting shaft, and a limiting ball arranged on the top of the positioning cone head.

[0016] The beneficial effects of the present invention are as follows: by setting the rotating part and the welding part, the welding gun can be aimed at the weld during the welding process, and the size of the weld can be accurately controlled through the welding cavity to make it uniform and beautiful, avoid cracks, effectively avoid stress concentration, and improve the firmness of welding. At the same time, by setting the gas dispersion grooves staggered from each other, the escape of harmful gases is effectively avoided, and the environmental friendliness is improved.

[0017] Another object of the present invention is to provide an application of a welding device for a storage tank, which aims to solve the technical problems of over-reliance on the welding experience of the operator during the welding process, inability to achieve automated welding, high labor intensity and low work efficiency.

[0018] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising:

[0019] Place the storage tank to be welded on the working platform so that its mouth is flush with the top of the rotating part;

[0020] The drag chain is controlled to drive the lifting plate to move up and down, so that the welding part is aligned with the storage tank to complete the welding.

[0021] As a preferred application scheme of the welding device for storage tanks described in the present invention, during the welding process, the protective cover is inserted into a positioning groove located on the outside.

[0022] As a preferred application scheme of the welding device for storage tanks described in the present invention, the connecting shaft and the protective cover are provided with mutually staggered air dispersion grooves.

[0023] The beneficial effects of the present invention are as follows: by setting up a lifting plate and a welding part, there is no need for manual alignment during welding, which saves time and effort; and the setting of the positioning groove and the positioning limit ball effectively improves the accuracy of docking, can realize automatic welding, reduces the labor intensity of operators, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0025] Figure 1 The figure is a schematic diagram of the overall structure of the welding device for storage tanks of the present invention.

[0026] Figure 2 The figure is a schematic structural diagram of the rotating part of the welding device for storage tanks according to the present invention.

[0027] Figure 3 for Figure 2 Enlarged schematic diagram at point A in the middle.

[0028] Figure 4 The figure is a schematic structural diagram of the welding part of the welding device for storage tanks of the present invention.

[0029] Figure 5 for Figure 4 Enlarged schematic diagram of point B in the middle. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0034] Example 1

[0035] Reference Figure 1-3 , which is a first embodiment of the present invention, provides a welding device for a storage tank, the device comprising:

[0036] The rack unit 100 includes a working platform 101, a supporting frame 102 disposed on the working platform 101, and a rotating part 103 disposed on the working platform 101;

[0037] The lifting unit 200 includes a lifting plate 201 arranged on the working platform 101, a drag chain 202 arranged on the side of the lifting plate 201, and a welding part 203 arranged on the lifting plate 201. By setting the rotating part 103 and the welding part 203, the change of the welding path is controllable to ensure the continuity and uniformity of the weld.

[0038] Among them, the rotating part 103 includes a rotating component 103a arranged on the working platform 101, and a positioning component 103b arranged on the rotating component 103a. The rotating component 103a is adjusted to make the tank plug in an appropriate position of the welding part 203. The tank plug is accurately placed in the welding position through the positioning component 103b, so that the welding position is parallel to the surface of the working platform 101. The welding is completed after the rotating component 103a rotates one circle, ensuring the continuity and uniformity of the weld, avoiding stress concentration at the weld, and improving the sealing of the weld.

[0039] During use, the device is placed in a suitable position, and the storage tank is placed between the rotating part 103 and the welding part 203, so that the connection between the tank plug and the tank mouth is parallel to the surface of the working platform 101, and the lifting plate 201 is adjusted so that the drag chain 202 drives the welding part 203 to move vertically up and down until the welding part 203 contacts the tank plug, and the rotating component 103a is adjusted so that the tank plug is in the appropriate position of the welding part 203, and the positioning component 103b is used to make the tank plug accurately in the welding position so that the welding position is parallel to the surface of the working platform 101, and the welding is completed after the rotating component 103a rotates one circle, ensuring the continuity and uniformity of the weld, avoiding stress concentration at the weld, and improving the sealing of the weld.

[0040] Example 2

[0041] Reference Figure 1-5 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the rotating assembly 103a includes a rotating platform 103a-1 arranged on the working platform 101, a mounting base plate 103a-2 arranged on the rotating platform 103a-1, and a fixed plate 103a-3 arranged on the mounting base plate 103a-2. The storage tank is placed on the fixed plate 103a-3. At this time, the tank mouth and the tank plug need to be welded at a position parallel to the surface of the rotating platform 103a-1. At the same time, the mounting base plate 103a-2 limits the storage tank to avoid displacement of the storage tank during welding, which affects the welding effect.

[0042] Compared with the embodiment 1, further, the positioning assembly 103b includes a positioning groove 103b-1 disposed on the fixing plate 103a-3, a welding cavity 103b-2 disposed on the fixing plate 103a-3, and a positioning cavity 103b-3 disposed on the fixing plate 103a-3;

[0043] There are two groups of positioning grooves 103b-1, and the welding process takes place in the welding chamber 103b-2, which effectively avoids the escape of harmful gases generated during the welding process and improves the environmental friendliness of the device. By setting two groups of positioning grooves 103b-1 and positioning chamber 103b-3, it is effectively ensured that the longitudinal and radial positions of the welding part 203 are accurately in the appropriate positions. At the same time, during the welding process, as the rotating part 103 rotates, the storage tank will not produce longitudinal displacement, which further improves the stability and accuracy of welding.

[0044] Compared with Example 1, further, the welding part 203 includes a protection component 203a arranged on the lifting plate 201, and a welding component 203b arranged on the protection component 203a. The protection component 203a effectively ensures the safety of the operator during the welding process, while avoiding the escape of harmful gases generated during welding, thereby improving environmental friendliness. The welding component 203b is located inside the protection component 203a, which is not only a protection for the welding product, but also a protection for the staff.

[0045] Compared with Example 1, further, the protection component 203a includes a fixed flange 203a-1 arranged on the lifting plate 201, a protection cover 203a-2 arranged on the fixed flange 203a-1, and a connecting shaft 203a-3 arranged on the fixed flange 203a-1. During the welding process, the protection component 203a moves up and down with the lifting plate 201, so that the protection cover 203a-2 is located outside the welding portion 203.

[0046] Compared with Example 1, further, the welding assembly 203b includes a welding gun 203b-1 arranged inside the protective cover 203a-2, a positioning cone head 203b-2 arranged on the connecting shaft 203a-3, and a limiting ball 203b-3 arranged on the top of the positioning cone head 203b-2. During welding, the welding gun 203b-1 enters the welding cavity 103b-2 for welding, and the positioning cone head 203b-2 and the limiting ball 203b-3 make the top of the welding gun 203b-1 contact with the bottom of the welding cavity 103b-2, while ensuring that the welding assembly 203b does not longitudinally move during the welding process. Displacement improves the stability and accuracy of welding. During positioning, the limiting ball 203b-3 enters the positioning cavity 103b-3, and the longitudinal precise positioning of the welding part 203 is achieved through the close fit between the limiting ball 203b-3 and the positioning cavity 103b-3. The bottom of the protective cover 203a-2 enters the outer positioning groove 103b-1, and the side of the positioning cone head 203b-2 enters the inner positioning groove 103b-1, so as to achieve horizontal precise positioning of the welding part 203, reduce welding deviation, avoid welding defects, make the weld uniform, effectively avoid stress concentration at the welding point, and improve the sealing of the tank mouth and tank plug.

[0047] The remaining structures are the same as those of Example 1.

[0048] Example 3

[0049] Reference Figure 1-5 , which is the third embodiment of the present invention, is based on Embodiment 1-Embodiment 2, and provides an application of a tank simulation body tank plug tank mouth welding device, comprising:

[0050] Place the storage tank to be welded on the working platform 101 so that its mouth is flush with the top of the rotating part 103;

[0051] The control drag chain 202 drives the lifting plate 201 to move up and down, so that the welding part 203 is aligned with the storage tank, and the welding is completed. The rotating component 103a is adjusted to make the tank plug in the appropriate position of the welding part 203. The positioning component 103b is used to make the tank plug accurately in the welding position, so that the welding position is parallel to the surface of the working platform 101. The welding is completed after the rotating component 103a rotates one circle, ensuring the continuity and uniformity of the weld, avoiding stress concentration at the weld, and improving the sealing of the weld.

[0052] Compared with Example 2, further, during the welding process, the protective cover 203a-2 is inserted into the outer positioning groove 103b-1, which effectively ensures that the longitudinal and radial positions of the welding part 203 are precisely in the appropriate positions. At the same time, during the welding process, as the rotating part 103 rotates, the storage tank will not produce longitudinal displacement, further improving the stability and accuracy of the welding.

[0053] Compared with Example 2, further, staggered gas dispersion grooves K are provided on the connecting shaft 203a-3 and the protective cover 203a-2, which effectively prevents the escape of harmful gases and improves environmental friendliness. At the same time, the staggered arrangement of the gas dispersion grooves K allows the high-temperature gas generated during welding to first pass through the gas dispersion grooves K on the connecting shaft 203a-3 and enter the interior of the protective cover 203a-2, and then be released into the atmosphere through the gas dispersion grooves K provided on the protective cover 203a-2. In this process, most of the harmful gases generated during welding are attached to the connecting shaft 203a-3 and the inner walls of the protective cover 203a-2 in the form of suspended matter. At the same time, the high-temperature gas is also dissipated, so that the escaping gas reduces the pollution to the environment and improves environmental friendliness.

[0054] The remaining structure is the same as that of Example 2.

[0055] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, improvements, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0056] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A welding device for a storage tank, characterized in that: include, A frame unit (100) comprises a working platform (101), a support frame (102) arranged on the working platform (101), and a rotating part (103) arranged on the working platform (101); The lifting unit (200) comprises a lifting plate (201) arranged on the working platform (101), a drag chain (202) arranged on the side of the lifting plate (201), and a welding part (203) arranged on the lifting plate (201).

2. The welding device for a storage tank according to claim 1, characterized in that: The rotating part (103) comprises a rotating component (103a) arranged on the working platform (101), and a positioning component (103b) arranged on the rotating component (103a).

3. The welding device for a storage tank according to claim 2, characterized in that: The rotating assembly (103a) comprises a rotating platform (103a-1) arranged on the working platform (101), a mounting base plate (103a-2) arranged on the rotating platform (103a-1), and a fixing plate (103a-3) arranged on the mounting base plate (103a-2).

4. The welding device for a storage tank according to claim 3, characterized in that: The positioning assembly (103b) comprises a positioning groove (103b-1) arranged on the fixing plate (103a-3), a welding cavity (103b-2) arranged on the fixing plate (103a-3), and a positioning cavity (103b-3) arranged on the fixing plate (103a-3); The positioning grooves (103b-1) are provided in two groups.

5. The welding device for a storage tank according to claim 4, characterized in that: The welding part (203) comprises a protection component (203a) arranged on the lifting plate (201), and a welding component (203b) arranged on the protection component (203a).

6. The welding device for a storage tank according to claim 5, characterized in that: The protection component (203a) comprises a fixed flange (203a-1) arranged on the lifting plate (201), a protection cover (203a-2) arranged on the fixed flange (203a-1), and a connecting shaft (203a-3) arranged on the fixed flange (203a-1).

7. The welding device for a storage tank according to claim 6, characterized in that: The welding assembly (203b) comprises a welding gun (203b-1) arranged inside the protective cover (203a-2), a positioning cone head (203b-2) arranged on the connecting shaft (203a-3), and a limiting ball (203b-3) arranged on the top of the positioning cone head (203b-2).

8. An application of a welding device for a storage tank, characterized in that: The welding device for a storage tank according to claim 7, wherein the application method comprises: Placing the storage tank to be welded on the working platform (101) so that the tank opening is flush with the top of the rotating part (103); The drag chain (202) is controlled to drive the lifting plate (201) to move up and down, so that the welding part (203) is aligned with the storage tank, and the welding is completed.

9. The use of the welding device for a storage tank according to claim 8, characterized in that: During the welding process, the protective cover (203a-2) is inserted into the positioning groove (103b-1) located on the outside.

10. Application of the tank plug mouth welding device for a storage tank simulation body according to claim 9, characterized in that: The connecting shaft (203a-3) and the protective cover (203a-2) are provided with gas dispersion grooves (K) that are staggered with each other.

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