Pipe welding equipment

Abstract

The utility model provides pipe welding equipment, and belongs to the technical field of welding equipment. The pipe welding equipment comprises a welding body, a conducting ring and a welding gear ring are arranged on the welding body, the conducting ring makes contact with the welding gear ring, a cooling groove is formed in the welding body, and the conducting ring covers the cooling groove in a sealing mode. The pipe and pipe welding equipment further comprises a cooling system, and the cooling system is connected with the cooling groove and can inject a cooling medium into the cooling groove so that the cooling medium can make contact with the conducting ring. The pipe-pipe welding machine can directly cool the conducting ring and indirectly cool the welding gear ring at the same time, so that the problem that the welding machine is overheated is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding equipment, and in particular relates to a pipe-to-pipe welding device. Background Art

[0002] Existing pipe-to-pipe welding equipment generally features a rotating welding ring with a welding head. Pipe welding is achieved by rotating the ring relative to the pipe axis. The cathode cable on the welding machine powers the ring through a conductive copper ring mounted on the equipment. This generates significant heat during operation, raising the temperature of the ring and conductive copper ring. This can affect normal operation and cause the equipment to overheat. Utility Model Content

[0003] In view of the above problems existing in the prior art, the purpose of the embodiments of the present utility model is to provide a pipe-to-pipe welding device, which can directly cool the conductive ring and indirectly cool the welding gear ring at the same time to improve the problem of overheating of the welding machine.

[0004] The technical solution adopted in the embodiment of the utility model is:

[0005] A pipe-to-pipe welding device comprises a welding body, a conductive ring and a welding gear ring are provided on the welding body, the conductive ring is in contact with the welding gear ring, a cooling groove is provided on the welding body, and the conductive ring covers the cooling groove;

[0006] The pipe-to-pipe welding equipment further includes a cooling system, which is connected to the cooling tank and can inject a cooling medium into the cooling tank so that the cooling medium contacts the conductive ring.

[0007] Furthermore, the pipe-to-pipe welding equipment further includes a shell, the shell is provided with a cooling medium flow channel communicating with the cooling tank, and the cooling system is connected to the cooling tank through the cooling medium flow channel.

[0008] Furthermore, the shell is provided with a cooling medium inlet and a cooling medium outlet respectively connected to the cooling medium flow channel.

[0009] Furthermore, the cooling medium flow channel includes a shell cooling cavity and one or more shell branches respectively connected to the shell cooling cavity, or the cooling medium flow channel includes one or more shell cooling cavities; the shell cooling cavity is opposite to and connected to the cooling groove.

[0010] Furthermore, the outer shell includes a fixed shell and a movable shell rotatably connected to the fixed shell, a pipe hole for placing a pipe is defined between the fixed shell and the movable shell, and the cooling medium flow channel is arranged in the fixed shell.

[0011] Furthermore, the shell branch channel includes one or more transverse branches and one or more longitudinal branches.

[0012] Furthermore, an annular groove matching the conductive ring is provided on the welding body, the conductive ring is fixed in the annular groove, and the cooling groove is provided at the bottom of the annular groove.

[0013] Furthermore, the pipe-to-pipe welding equipment also includes a guide block, which is located between the shell cooling cavity and the cooling groove. The guide block is provided with a medium inlet channel and a medium outflow channel, and the medium inlet channel and the medium outflow channel are respectively connected to the shell cooling cavity and the cooling groove.

[0014] Furthermore, the guide block is made of insulating material.

[0015] Furthermore, a slot is provided on the shell, and the guide block is fixed in the slot.

[0016] Compared with the prior art, the beneficial effects of the embodiments of the present invention are:

[0017] The welding machine of the present invention directly sets a cooling groove on the welding body, and the conductive ring covers the cooling groove. When the cooling system injects cooling medium into the cooling groove, the cooling medium directly contacts the surface of the conductive ring, thereby reducing the temperature of the conductive ring, and then reducing the temperature of the welding gear ring, thereby improving the overheating phenomenon of the welding equipment.

[0018] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention.

[0019] The overview of various implementations or examples of the technology described in this utility model is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The drawings illustrate various embodiments generally by way of example and not limitation, and together with the description and claims, serve to illustrate the embodiments of the invention. Where appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the pipe-to-pipe welding equipment according to an embodiment of the present utility model;

[0022] Figure 2 This is a rear view of the first housing of the embodiment of the present utility model;

[0023] Figure 3 This is a cross-sectional view of the first shell and the welding body after assembly according to the embodiment of the utility model;

[0024] Figure 4 This is a partial structural diagram of the welding body of the embodiment of the utility model;

[0025] Figure 5 This is a schematic structural diagram of the guide block according to an embodiment of the utility model.

[0026] In the figure: 1. Outer shell; 11. First shell; 110. Fixed shell; 111. Movable shell; 12. Second shell; 13. Block groove; 14. Cooling medium outlet; 15. Cooling medium inlet; 16. Cooling medium flow channel; 161. Shell branch; 162. Shell cooling cavity; 2. Welding body; 21. Annular groove; 22. Cooling groove; 3. Conductive ring; 4. Welding gear ring; 5. Guide block; 51. Medium inflow channel; 52. Medium outflow channel. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the usual meanings understood by persons of ordinary skill in the field to which this utility model belongs. The words "first", "second" and similar terms used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0029] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0030] Existing pipe-to-pipe welding equipment generally features a rotatable welding ring 4 with a welding head mounted on it. Pipe welding is achieved by rotating the welding ring 4 relative to the axis of the pipe being welded. The welding equipment also features a conductive ring 3 that contacts the welding ring 4. The current transmitted by the cathode cable on the welding equipment is transmitted to the welding head via the conductive ring 3 and the welding ring 4. This generates a significant amount of heat during operation, which in turn increases the temperature of the welding ring 4 and the conductive ring 3, potentially affecting normal operation and causing the welding equipment to overheat.

[0031] In order to solve the above technical problems, an embodiment of the present utility model provides a pipe-to-pipe welding device, which includes a welding body 2 , on which a conductive ring 3 and a welding gear ring 4 are provided, and the conductive ring 3 is in contact with the welding gear ring 4 .

[0032] A welding head is installed on the inner ring of the welding gear ring 4. The conductive ring 3 can be electrically connected to the cathode cable of the welding equipment. The current in the cathode cable can flow into the welding gear ring 4 through the conductive ring 3, and then power the welding head. The pipeline can be welded through the welding head.

[0033] like Figure 1 As shown, a cooling groove 22 is provided on the welding body 2 of this embodiment. When the conductive ring 3 is provided on the welding body 2, the conductive ring 3 covers the cooling groove 22 so that the cooling groove 22 forms a cooling cavity. The covering can be understood as the conductive ring 3 covering the notch of the cooling groove 22.

[0034] The pipe-to-pipe welding apparatus further includes a cooling system (not shown), which is connected to the cooling tank 22 and is capable of injecting a cooling medium into the cooling tank 22. After flowing into the cooling tank 22, the cooling medium can directly contact the surface of the conductive ring 3, thereby exchanging heat with the conductive ring 3. The cooling system can be a cooling medium supply system, primarily used to provide a circulating cooling medium to the cooling tank 22. The specific operating principle of the cooling system is prior art and will not be further described.

[0035] The welding machine of this embodiment directly sets a cooling groove 22 on the welding body 2, and the conductive ring 3 covers the cooling groove 22. When the cooling system injects cooling medium into the cooling groove 22, the cooling medium directly contacts the surface of the conductive ring 3, thereby reducing the temperature of the conductive ring 3, and then reducing the temperature of the welding gear ring 4, thereby improving the overheating phenomenon of the welding equipment.

[0036] It should be noted that the cooling medium injected into the cooling tank 22 by the cooling system of the present application can be a coolant or a cooling gas. The coolant can be cooling water or ethylene glycol, etc.; the cooling gas can be composed of an inert gas, nitrogen, helium, etc.

[0037] In some embodiments, the conductive ring 3 and the notch of the cooling groove 22 may be sealed by a sealing ring, thereby ensuring the sealing between the two and preventing leakage of the cooling medium.

[0038] like Figure 1 As shown, in some embodiments, the pipe-to-pipe welding device further includes a shell 1 , which is used to wrap the entire welding body 2 .

[0039] The housing 1 may be provided with a cooling medium flow channel 16 communicating with the cooling groove 22. The cooling system is connected to the cooling groove 22 via the cooling medium flow channel 16. The cooling medium provided by the cooling system may first flow into the cooling medium flow channel 16 and then flow into the cooling groove 22 to exchange heat with the conductive ring 3. In this way, the cooling system cools the housing 1 while cooling the conductive ring 3, thereby further reducing the temperature of the welding body 2 and extending the working time and service life of the pipe-to-pipe welding equipment.

[0040] In some embodiments, the cooling medium flow channel 16 can be formed on the shell 1, that is, the cooling medium flow channel 16 can be directly processed on the shell 1. In this way, the cooling medium is directly in contact with the shell 1 for heat exchange, which can speed up the heat dissipation speed of the shell 1, enhance the cooling effect, and simplify the size of the pipe welding equipment.

[0041] Of course, in some other embodiments, a pipeline through which a cooling medium can flow may be installed on the housing 1 , and the outer peripheral wall of the pipeline is in direct contact with the housing 1 , thereby cooling the housing 1 .

[0042] In the embodiment of the present application, only the cooling medium formed on the housing 1 is taken as an example for description.

[0043] In addition, it should be noted that the housing 1 of this embodiment can be divided into two parts, for example, including a first shell 11 and a second shell 12. The first shell 11 is located on the first side of the welding body 2, and the second shell 12 is located on the second side of the welding body 2. The first shell 11 and the second shell 12 are connected to each other to wrap the welding body 2.

[0044] Furthermore, in some embodiments, the cooling medium flow channel 16 on the housing 1 can be provided on the first shell 11 or the second shell 12 alone, or can be provided on both shells respectively.

[0045] When the cooling medium flow channel 16 is only provided on one shell, it is preferably provided on the shell near the cooling groove 22, that is, Figure 1 The cooling medium flow channel 16 is disposed on the first housing 11, thereby reducing the flow path between the cooling medium flow channel 16 and the cooling groove 22. This application only takes the cooling medium flow channel 16 disposed on the first housing 11 as an example for description.

[0046] like Figure 2As shown, in some embodiments, the housing 1 may be provided with a cooling medium inlet 15 and a cooling medium outlet 14 respectively connected to the cooling medium flow channel 16, and the cooling system is connected to the cooling medium inlet 15 and the cooling medium outlet 14 respectively. The cooling medium provided by the cooling system can flow into the cooling medium flow channel 16 and the cooling groove 22 in sequence through the cooling medium inlet 15, exchange heat with the conductive ring 3, and then flow back and out through the cooling medium outlet 14, thereby realizing the circulation of the cooling medium.

[0047] like Figure 2 As shown, in some embodiments, the cooling medium flow channel 16 may include a housing cooling cavity 162 and one or more housing branch channels 161 respectively connected to the housing cooling cavity 162. The housing cooling cavity 162 is opposite to and connected to the cooling groove 22 on the welding body 2. The cooling medium can flow into the housing cooling cavity 162 through the housing branch channels 161 and then into the cooling groove 22, thereby preventing the cooling medium in one or more housing branch channels 161 from flowing into the cooling groove 22 at the same time, thereby preventing excessive impact force on the conductive ring 3.

[0048] Alternatively, in some other embodiments, the cooling medium flow channel 16 may also only include one or more housing cooling cavities 162 .

[0049] In the case where the cooling medium flow channel 16 includes only one shell cooling cavity 162 , the shell cooling cavity 162 is communicated with the cooling groove 22 on the welding body 2 .

[0050] In the case where the cooling medium flow channel 16 includes multiple shell cooling cavities 162 , the multiple shell cooling cavities 162 may be interconnected or not, and one of the shell cooling cavities 162 is connected to the cooling groove 22 on the welding body 2 .

[0051] The free ends of two of the one or more shell branch channels 161 may respectively extend to the side walls of the shell 1 to form a cooling medium inlet 15 and a cooling medium outlet 14 respectively.

[0052] In some embodiments, the housing branch channel 161 may include one or more transverse branches and one or more longitudinal branches. The one or more transverse branches and the one or more longitudinal branches are interconnected to form a mesh-like branch network arranged on the housing 1, thereby increasing the heat dissipation efficiency of the housing 1.

[0053] Of course, in some other embodiments, the shell branch channel 161 may also be provided on the outer shell 1 in a disc shape.

[0054] like Figure 1As shown, in some embodiments, the housing 1 may include a fixed shell 110 and a movable shell 111 rotatably connected to the fixed shell 110. The movable shell 111 can rotate relative to the fixed shell 110 to clamp the pipe to be welded, and weld it by rotating the welding gear ring 4 around the axial direction of the pipe.

[0055] Cooling medium flow channels 16 may be provided in the fixed shell 110 and the movable shell 111 respectively, so that the outer shell 1 can be cooled in all directions.

[0056] The cooling medium flow channel 16 in the fixed shell 110 and the cooling medium flow channel 16 in the movable shell 111 can be independent of each other, that is, not connected to each other. Alternatively, a nozzle connected to the cooling medium flow channel 16 can be provided at the joint between the fixed shell 110 and the movable shell 111. When the fixed shell 110 and the movable shell 111 are rotated and docked, the two nozzles dock, and the cooling medium can flow between the fixed shell 110 and the movable shell 111, thereby cooling both shells.

[0057] In this embodiment, the cooling medium flow channel 16 can be provided only in the fixed shell 110 to reduce processing costs. Alternatively, the cooling medium flow channel 16 can be provided on both the fixed shell 110 and the movable shell 111 to further increase the heat dissipation area of ​​the main shell.

[0058] like Figure 1 and Figure 4 As shown, in some embodiments, the welding body 2 is provided with an annular groove 21 matching the conductive ring 3 .

[0059] The conductive ring 3 can be inserted into the annular groove 21 to be fixed therein. In this embodiment, the cooling groove 22 can be provided at the bottom of the annular groove 21, that is, the notch of the cooling groove 22 is located at the bottom of the annular groove 21. In this way, when the conductive ring 3 is inserted into the annular groove 21, the annular groove 21 can be directly sealed.

[0060] In some embodiments, the number of cooling grooves 22 can be one or more, and one or more cooling grooves 22 are arranged at intervals along the annular groove 21. The cooling medium flow channel 16 is connected to one or more cooling grooves 22. Through one or more cooling grooves 22, its contact area with the conductive ring 3 can be increased, thereby improving the cooling efficiency of the conductive ring 3.

[0061] The specific shape of the cooling groove 22 of the present application is not limited.

[0062] like Figure 1 、 Figure 3 and Figure 5As shown, in some embodiments, the pipe-to-pipe welding apparatus further includes a guide block 5, which is located between the housing 1 and the welding body 2. The guide block 5 is provided with a medium inlet channel 51 and a medium outlet channel 52, which respectively connect the housing cooling cavity 162 and the cooling tank 22. That is, the cooling medium in the housing cooling cavity 162 can flow into the cooling tank 22 through the medium inlet channel 51 on the guide block 5, exchange heat with the conductive ring 3, and then flow into the housing cooling cavity 162 through the medium outlet channel 52 on the guide block 5. The guide block 5 facilitates the cooling medium to flow back and forth between the housing cooling cavity 162 and the cooling tank 22.

[0063] The shape of the guide block 5 of the present application is not specifically limited and can be determined according to the gap between the shell 1 and the welding body 2 .

[0064] There is no specific limitation on the fixing position and fixing method of the guide block 5. The guide block 5 can be fixed on the housing 1, for example Figure 1 As shown, the housing 1 can be provided with a slot 13, and the guide block 5 is stuck in the slot 13. The guide block 5 can also be fixed on the welding body 2, and it can be fixed to the housing 1 or the welding body 2 by mechanical connections such as bolts.

[0065] In some embodiments, the material of the guide block 5 can be an insulating material. Usually, the shell 1 serves as the anode component of the welding equipment, and the conductive ring 3 serves as part of the cathode of the welding equipment. The conductive ring 3 and the shell 1 are separated by the guide block 5 made of insulating material, which can avoid the generation of an arc between the conductive ring 3 and the shell 1.

[0066] The above description is intended to be illustrative rather than restrictive, and those skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure. Furthermore, the above examples (or one or more of them) may be used in combination with each other, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations.

Claims

1. A pipe-to-pipe welding device, comprising a welding body, wherein a conductive ring and a welding gear ring are provided on the welding body, wherein the conductive ring contacts the welding gear ring, and wherein: The welding body is provided with a cooling groove, and the conductive ring covers the cooling groove; The pipe-to-pipe welding equipment further includes a cooling system, which is connected to the cooling tank and can inject a cooling medium into the cooling tank so that the cooling medium contacts the conductive ring.

2. The pipe-to-pipe welding device according to claim 1, characterized in that: The pipe-to-pipe welding equipment further includes a shell, on which a cooling medium flow channel communicating with the cooling tank is provided, and the cooling system is connected to the cooling tank via the cooling medium flow channel.

3. The pipe-to-pipe welding device according to claim 2, characterized in that: The shell is provided with a cooling medium inlet and a cooling medium outlet which are respectively communicated with the cooling medium flow channel.

4. The pipe-to-pipe welding device according to claim 2, characterized in that: The cooling medium flow channel includes a shell cooling cavity and one or more shell branch channels respectively connected to the shell cooling cavity, or the cooling medium flow channel includes one or more shell cooling cavities; The shell cooling cavity is opposite to and communicates with the cooling groove.

5. The pipe-to-pipe welding device according to claim 2, characterized in that: The outer shell includes a fixed shell and a movable shell connected to the fixed shell. The fixed shell can rotate relative to the movable shell to clamp the pipe to be welded. The fixed shell and the movable shell are respectively provided with the cooling medium flow channel.

6. The pipe-to-pipe welding device according to claim 4, characterized in that: The shell branches include one or more transverse branches and one or more longitudinal branches.

7. The pipe-to-pipe welding equipment according to claim 2, characterized in that: An annular groove matching the conductive ring is provided on the welding body, the conductive ring is fixed in the annular groove, and the cooling groove is provided at the bottom of the annular groove.

8. The pipe-to-pipe welding device according to claim 4, characterized in that: The pipe-to-pipe welding equipment also includes a guide block, which is located between the shell cooling cavity and the cooling groove. The guide block is provided with a medium inlet channel and a medium outflow channel, and the medium inlet channel and the medium outflow channel are connected to the shell cooling cavity and the cooling groove respectively.

9. The pipe-to-pipe welding device according to claim 8, characterized in that: The guide block is made of insulating material.

10. The pipe-to-pipe welding device according to claim 8, characterized in that: The shell is provided with a slot, and the guide block is fixed in the slot.

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