Double-cavity argon filling protection device and welding equipment

Abstract

The utility model relates to the technical field of welding, in particular to a double-cavity argon filling protection device and welding equipment, which comprises a welding bin composed of a first panel, a second panel and a side plate, a partition plate is arranged in the welding bin to divide an inner cavity of the welding bin into a first cavity and a second cavity, and an inflation inlet is arranged on the side plate; a first opening is formed in the first panel, a second opening is formed in the second panel, and a third opening is formed in the partition plate; a first flexible lining plate is fixedly arranged on one side of the first panel, and a first through hole is formed in the first flexible lining plate; a second flexible lining plate is fixedly arranged on one side of the second panel, and a second through hole is formed in the second flexible lining plate; a glass plate is arranged on the side, away from the welding bin, of the second flexible lining plate and provided with a hole. According to the utility model, a welding part can be always in a constant-temperature and constant-humidity inert atmosphere, and is prevented from being oxidized or burnt through, so that the use range of welding current is expanded, and the influence degree of voltage fluctuation on the welding effect is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a double-cavity argon flushing protection device and welding equipment. Background Art

[0002] Photovoltaic, wind power and other new energy power generation systems are greatly affected by natural conditions, and power generation is prone to fluctuations, which can easily impact the power grid. They need to be coordinated with large-scale energy storage systems to be more easily absorbed by the power grid. The molten salt heat storage system is a large-scale, low-cost energy storage system solution that is not flammable or explosive, and the risks are controllable.

[0003] The components of the molten salt heat storage system include molten salt electric heaters. The metal tubes of general molten salt electric heaters are thin in wall (1-3 mm thick) and small in diameter (30-40 mm). They are difficult to weld, easy to oxidize, and burn through during production. If the welding current is too large or too small, the welding of thin-walled tubes cannot be completed well. Even within the normal voltage fluctuation range, the current fluctuation can easily exceed the required welding current, causing welding problems. Utility Model Content

[0004] In view of the technical problem that the existing molten salt electric heater tank wall is difficult to weld, the utility model provides a double-cavity argon flushing protection device and welding equipment, which can ensure that the welding part is always flushed by the argon gas flow, ensuring that the welding part is in an inert atmosphere with constant temperature and humidity during the welding process, and ensuring that the welding part is not prone to oxidation or burn-through at high temperatures. Problems such as, thereby expanding the use range of the welding current and reducing the influence of voltage fluctuations on the welding effect.

[0005] The technical solution provided by the utility model is: a double-cavity argon flushing protection device, comprising a welding chamber surrounded by a first panel, a second panel and a side panel, a partition is arranged in the welding chamber to divide the inner cavity of the welding chamber into a first chamber and a second chamber, at least one inflation port is arranged on the side panel, and at least one inflation port is communicated with the first chamber; a first opening penetrating and communicating with the first chamber is arranged on the first panel, a second opening penetrating and communicating with the second chamber is arranged on the second panel, and a third opening penetrating is arranged on the partition, and the first chamber and the second chamber are communicated with each other through the third opening; a first flexible lining plate is fixedly arranged on one side of the first panel, a first through hole penetrating is provided on the first flexible lining plate, and the first through hole is communicated with the first opening; a second flexible lining plate is fixedly arranged on one side of the second panel, a second through hole penetrating is provided on the second flexible lining plate, and the second through hole is communicated with the second opening; a glass plate is arranged on the side of the second flexible lining plate away from the welding chamber, and a penetrating mold hole is arranged on the glass plate, and the mold hole is communicated with the second through hole.

[0006] Optionally, the volume of the first chamber is greater than the volume of the second chamber.

[0007] Optionally, a fixing assembly is provided on the side of the glass plate facing away from the second flexible lining plate, and the fixing assembly includes a first support rod, the end of the first support rod is movably connected to the second support rod, the end of the second support rod is fixedly provided with a connecting piece, and the connecting piece is fixedly connected to the glass plate.

[0008] Optionally, the apertures of the first through hole, the first opening and the third opening are all a, and the apertures of the second through hole and the second opening are all b, satisfying a<b.

[0009] Optionally, the profile hole is a long hole, and the area of ​​the profile hole is smaller than the area of ​​the second through hole.

[0010] Optionally, when the glass plate is placed perpendicular to a horizontal plane, an angle α exists between the mold hole and the horizontal plane, satisfying 0°<α<90°.

[0011] Optionally, a plurality of the inflation ports are provided, and the plurality of the inflation ports are evenly distributed on the side panel, at least some of the inflation ports are communicated with the first chamber, and the remaining inflation ports are communicated with the second chamber.

[0012] Optionally, the glass plate is a quartz glass plate.

[0013] Optionally, the first flexible lining plate and the second flexible lining plate are both made of flexible rock wool boards.

[0014] A welding device comprises the above-mentioned double-cavity argon flushing protection device and a welding gun, at least part of which passes through the mold hole, and a clearance fit is formed between the welding gun and the mold hole.

[0015] Beneficial Effects

[0016] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects: in view of the technical problem that the existing molten salt electric heater tank wall is difficult to weld, the utility model can make the welding part always be flushed by the argon gas flow, ensure that the welding part is in an inert atmosphere of constant temperature and humidity during the welding process, and ensure that the welding part is not prone to oxidation or burn-through at high temperature, thereby expanding the use range of the welding current, reducing the influence of voltage fluctuations on the welding effect, and making the weld fuller, and having better mechanical strength, and achieving better welding effect. At the same time, since the welding part is always flushed by the argon gas flow, the weld can be quickly cooled down, improving the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic structural diagram of a double-cavity argon flushing protection device proposed in an embodiment of the utility model.

[0018] Figure 2 This is a working schematic diagram of a double-cavity argon flushing protection device proposed in an embodiment of the utility model.

[0019] Figure 3 The present invention is a schematic structural diagram of a welding device proposed in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

[0021] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings. The words "first", "second", etc. described in the present utility model are set for the convenience of describing the technical solution of the present utility model, and have no specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments in the present application can be combined with each other. In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Multiple technical solutions in the same embodiment, and multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not have contradictions or conflicts, all of which are within the scope of protection required by the present utility model.

[0022] Example 1

[0023] Combined with Figure 1-3The present embodiment provides a double-chamber argon flushing protection device, characterized in that it includes a welding chamber surrounded by a first panel 11, a second panel 12 and a side panel 10, a partition 13 is provided in the welding chamber to separate the inner chamber of the welding chamber into a first chamber 101 and a second chamber 102, and at least one inflation port 14 is provided on the side panel 10, and at least one inflation port 14 is communicated with the first chamber 101; a first opening 111 penetrating and communicating with the first chamber 101 is provided on the first panel 11, a second opening 121 penetrating and communicating with the second chamber 102 is provided on the second panel 12, and a third opening 131 penetrating is provided on the partition 13, The first chamber 101 and the second chamber 102 are connected to each other through the third opening 131; a first flexible lining plate 21 is fixedly provided on one side of the first panel 11, and a first through hole 211 is provided on the first flexible lining plate 21, and the first through hole 211 is connected to the first opening 111; a second flexible lining plate 22 is fixedly provided on one side of the second panel 12, and a second through hole 221 is provided on the second flexible lining plate 22, and the second through hole 221 is connected to the second opening 121; a glass plate 15 is provided on the side of the second flexible lining plate 22 away from the welding chamber, and a through mold hole 151 is provided on the glass plate 15, and the mold hole 151 is connected to the second through hole 221.

[0024] The double-cavity argon flushing protection device of this embodiment is used for welding of electric heating tubes, so that the welding part is always flushed by the argon gas flow, ensuring that the welding part is in an inert atmosphere of constant temperature and humidity during the welding process, and can ensure that the welding part is not prone to oxidation or burn-through at high temperatures, thereby expanding the use range of the current and reducing the influence of voltage fluctuations on the welding effect, thereby making the weld fuller and having better mechanical strength, and achieving better welding effect. At the same time, since the welding part is always flushed by the argon gas flow, the weld can be quickly cooled down, improving the welding efficiency.

[0025] Taking welding one end of the metal tube constituting the electric heating tube with the end cap as an example, the double-chamber argon flushing protection device of this embodiment works as follows: first, insert the metal tube into the welding chamber from the first opening 111 and the first through hole 211, and move the metal tube in the direction of the third opening 131 until the end of the metal tube to be welded is located at the third opening 131. Among them, the diameters of the first opening 111, the third opening 131 and the first through hole 211 are equal to or slightly larger than the diameter of the metal tube to ensure that the metal tube can pass smoothly and can ensure that the metal tube can rotate freely during the welding process. It should be noted that the gap between the first opening 111 and the first through hole 211 and the metal tube should be small enough to ensure that the amount of argon gas leaking from the gap is small enough, and the gap between the third opening 131 and the metal tube should be able to ensure that argon gas flows from the first chamber 101 to the second chamber 102.

[0026] Then, the end cap is pushed into the end of the metal tube that needs to be welded. At this time, the welding part between the end cap and the metal tube is located at the third opening 131, or located in the second chamber 102. Before welding the end cap and the metal tube, the glass plate 15 is moved to one side of the second flexible lining plate 22. The glass plate 15 can be supported by a support frame and other structures so that the glass plate 15 remains in contact with one side of the second flexible lining plate 22. Then, the welding gun 16 is inserted from the mold hole 151 and passes through the second through hole 221, so that the gun head of the welding gun 16 is aligned with the welding part between the end cap and the metal tube. At this time, the gun head of the welding gun 16 is also located in the second chamber 102. At the same time, the gun body of the welding gun 16 also fills the mold hole 151, so that the amount of argon gas leaking from the gap between the mold hole 151 and the gun body is sufficiently small.

[0027] Then, argon gas needs to be filled into the welding chamber. The welding chamber is surrounded by a first panel 11, a second panel 12 and a side panel 10. The filling port 14 is located on the side panel 10. Taking the case where there is a filling port 14 connected to the first chamber 101 as an example, the filling process of argon gas is as follows: argon gas is filled into the welding chamber from the filling port 14, and the argon gas first enters the first chamber 101. As the argon gas is filled, part of the air in the first chamber 101 flows from the first opening 111 and the gap between the first through hole 211 and the metal tube to the external environment, and part of the air in the first chamber 101 flows from the third opening 131 to the second chamber 102, and pushes the air in the second chamber 102 to flow out from the second opening 121, the second through hole 221 and the gap between the mold hole 151 and the welding gun 16 to the external environment. Argon gas is continuously filled and air is continuously discharged, so that argon gas can fill the entire welding chamber, that is, both the first chamber 101 and the second chamber 102 are filled with argon gas.

[0028] Then, the welding gun 16 is turned on to weld the metal tube and the end cap. The welding part of the metal tube and the end cap is located in an argon environment. Under the protection of the inert gas argon, the outer wall of the metal tube can be protected from oxidation, and the welding part can be protected from oxidation or burn-through at high temperatures. This can expand the current usage range and reduce the impact of voltage fluctuations on the welding effect, thereby making the weld fuller and having better mechanical strength, and achieving better welding effects. At the same time, since the welding part is always flushed by the argon gas flow, the weld can be cooled quickly to improve welding efficiency.

[0029] In combination with the above working method, in an optional embodiment, the glass plate 15 is a quartz glass plate 15, which has good heat resistance and is suitable for welding scenes. Also, in some embodiments, the first flexible lining plate 21 and the second flexible lining plate 22 are both made of flexible rock wool plates, which can avoid damage to the outer wall of the metal tube and have high temperature resistance, and are suitable for welding scenes.

[0030] In a further embodiment, the volume of the first chamber 101 is greater than the volume of the second chamber 102. Since argon gas flows from the first chamber 101 to the second chamber 102 and leakage occurs during the flow, in this embodiment, the first chamber 101 plays a role similar to a buffer tank to ensure that sufficient argon gas flows into the second chamber 102.

[0031] In some embodiments, a fixing assembly is provided on the side of the glass plate 15 facing away from the second flexible liner 22, and the fixing assembly includes a first support rod 31, and the end of the first support rod 31 is movably connected to the second support rod 32, and the end of the second support rod 32 is fixedly provided with a connecting member 33, and the connecting member 33 is fixedly connected to the glass plate 15. Thus, by providing the fixing assembly, the glass plate 15 can be stably provided on one side of the second flexible liner 22, and at the same time, since the first support rod 31 and the second support rod 32 can be relatively movable, in some usage scenarios, the glass plate 15 can move with the welding gun 16. Among them, the connecting member 33 can be fixedly connected to the glass plate 15 by bolts, suction cups, bonding, etc.

[0032] In a further embodiment, the apertures of the first through hole 211, the first opening 111 and the third opening 131 are all a, and the apertures of the second through hole 221 and the second opening 121 are all b, satisfying a<b. Since the first through hole 211, the first opening 111 and the third opening 131 are all used for inserting the metal pipe, and combined with the aforementioned working method, it can be known that the gap between the metal pipe and the first through hole 211, the first opening 111 and the third opening 131 should be small enough, so the sizes of the three should be consistent to facilitate the control of the gap. The apertures of the second through hole 221 and the second opening 121 are all b, and satisfy a<b, the purpose is to ensure that the end cover and other welding parts are smoothly placed in the welding chamber, on the one hand, and on the other hand, since the welding gun 16 may need to rotate with welding, or the welding gun 16 needs to be inserted into the mold hole 151 in an inclined form, it is necessary to reserve space for the arrangement of the welding gun 16.

[0033] In some embodiments, the shaped hole 151 is a long hole, and the area of ​​the shaped hole 151 is smaller than the area of ​​the second through hole 221. The shaped hole 151 is a long hole, which can facilitate the tip of the welding gun 16 to be inserted into the shaped hole 151 in an inclined manner. The area of ​​the shaped hole 151 is smaller than the area of ​​the second through hole 221 in order to minimize the connection size between the second chamber 102 and the outside, thereby minimizing gas leakage.

[0034] In a further embodiment, when the glass plate 15 is placed perpendicular to the horizontal plane, there is an angle α between the mold hole 151 and the horizontal plane, satisfying 0°<α<90°. In this embodiment, the inclined mold hole 151 can facilitate the positioning of the inclined welding gun 16 head, thereby ensuring the welding effect.

[0035] And, in some embodiments, a plurality of gas inlets 14 are provided, and the plurality of gas inlets 14 are evenly distributed on the side plate 10, at least some of the gas inlets 14 are in communication with the first chamber 101, and the remaining gas inlets 14 are in communication with the second chamber 102. In this embodiment, the gas inlets 14 evenly distributed on the side plate 10 can ensure that argon gas is fully and evenly filled into the welding chamber, wherein, in addition to evenly filling into the first chamber 101, the second chamber 102 can also be inflated through some of the gas inlets 14 to supplement the argon gas in the second chamber 102, ensuring that the second chamber 102 is always full of argon gas, thereby ensuring the welding effect.

[0036] Example 2

[0037] Combined with Figure 1-3 This embodiment proposes a welding device, including a double-cavity argon flushing protection device recorded in the technical solution of Example 1, and also includes a welding gun 16, at least part of the welding gun 16 passes through the mold hole 151, and a clearance fit is formed between the welding gun 16 and the mold hole 151.

[0038] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creative design without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A double-chamber argon flushing protection device, characterized in that: The invention comprises a welding chamber formed by a first panel (11), a second panel (12) and a side panel (10); a partition (13) is arranged in the welding chamber so that the inner cavity of the welding chamber is divided into a first chamber (101) and a second chamber (102); the side panel (10) is provided with at least one inflation port (14), and at least one inflation port (14) is communicated with the first chamber (101); the first panel (11) is provided with a first opening (111) penetrating and communicating with the first chamber (101); the second panel (12) is provided with a second opening (121) penetrating and communicating with the second chamber (102); the partition (13) is provided with a third opening (131) penetrating, and the first chamber (101) and the second chamber (102) are communicated with each other through the third opening (131); A first flexible liner (21) is fixedly provided on one side of the first panel (11), a first through hole (211) is provided on the first flexible liner (21), and the first through hole (211) is communicated with the first opening (111); a second flexible liner (22) is fixedly provided on one side of the second panel (12), a second through hole (221) is provided on the second flexible liner (22), and the second through hole (221) is communicated with the second opening (121); A glass plate (15) is arranged on the side of the second flexible lining plate (22) facing away from the welding chamber, and a through-hole (151) is arranged on the glass plate (15), and the hole (151) is communicated with the second through hole (221).

2. A double-cavity argon flushing protection device according to claim 1, characterized in that: The volume of the first chamber (101) is greater than the volume of the second chamber (102).

3. A double-cavity argon flushing protection device according to claim 1, characterized in that: A fixing assembly is provided on the side of the glass plate (15) facing away from the second flexible lining plate (22), and the fixing assembly comprises a first support rod (31), the end of the first support rod (31) is movably connected to the second support rod (32), and the end of the second support rod (32) is fixedly provided with a connecting piece (33), and the connecting piece (33) is fixedly connected to the glass plate (15).

4. A double-cavity argon flushing protection device according to claim 1, characterized in that: The apertures of the first through hole (211), the first opening (111) and the third opening (131) are all a, and the apertures of the second through hole (221) and the second opening (121) are all b, satisfying a<b.

5. A double-cavity argon flushing protection device according to claim 1, characterized in that: The shaped hole (151) is a long hole, and the area of ​​the shaped hole (151) is smaller than the area of ​​the second through hole (221).

6. A double-cavity argon flushing protection device according to claim 5, characterized in that: When the glass plate (15) is placed perpendicular to a horizontal plane, an angle α exists between the mold hole (151) and the horizontal plane, satisfying 0°<α<90°.

7. A double-cavity argon flushing protection device according to any one of claims 1 to 6, characterized in that: A plurality of the inflation ports (14) are provided, and the plurality of the inflation ports (14) are evenly distributed on the side plate (10); at least some of the inflation ports (14) are in communication with the first chamber (101), and the remaining inflation ports (14) are in communication with the second chamber (102).

8. A double-cavity argon flushing protection device according to any one of claims 1 to 6, characterized in that: The glass plate (15) is a quartz glass plate (15).

9. A double-cavity argon flushing protection device according to any one of claims 1 to 6, characterized in that: The first flexible lining board (21) and the second flexible lining board (22) are both made of flexible rock wool boards.

10. A welding device, characterized in that: A double-cavity argon flushing protection device comprising any one of claims 1 to 9, and also comprising a welding gun (16), at least a portion of the welding gun (16) passes through the mold hole (151), and a clearance fit is formed between the welding gun (16) and the mold hole (151).

Images