Welding rotating disc device of tube plate sealing welding equipment

Abstract

The invention relates to the technical field of welding, and particularly discloses a welding rotating disc device of tube plate sealing welding equipment. A rotating disc base of the device is of a disc-shaped structure as a whole, and a tungsten electrode adjusting mechanism mounting clamping groove is formed in the rotating disc base in the radial direction; a main body of the tungsten electrode adjusting mechanism is an adjusting seat, the whole adjusting seat is of a fan-shaped structure, two baffles are arranged on the front side of the adjusting seat in the vertical direction, a tungsten electrode is clamped between the baffles through a tungsten electrode clamping block, and the baffles are movably connected with the tungsten electrode clamping block through locking bolts; a guide strip is arranged on the rear side of the adjusting base in the vertical direction, the size of the guide strip is matched with that of a tungsten electrode adjusting mechanism installation clamping groove, movable holes are formed in the two ends of the adjusting base in the vertical direction, and the positions of the movable holes are matched with those of tungsten electrode adjusting mechanism installation holes. And the tungsten electrode adjusting mechanism is connected with the rotating disc base. The device is simple in structure and convenient to operate, full protection of sealing welding seams is achieved, and the welding quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding, and in particular relates to a welding rotating disk device of tube sheet sealing welding equipment. Background Art

[0002] The tube sheet seal welding of heat exchangers in the fields of power, petrochemicals, etc. is an important sealing boundary. Its welding quality directly affects the safe operation of the entire system. At present, the tube sheet seal welding equipment is mainly used to complete the welding. In order to increase the corrosion resistance, the material of the tube and plate is generally stainless steel or titanium alloy thin-walled tube. During the welding process, the molten pool needs to be fully protected by inert gas, otherwise it is easy to produce defects such as pores and oxidation. At the same time, the tungsten electrode needs to be in the middle of the tube sheet.

[0003] The welding rotary disc is the core component of the tube-sheet sealing welding equipment. It is placed coaxially with the welding pipe, and is equipped with a tungsten electrode and a gas protection device, and a gas protection cover is installed on the outside. During welding, the tungsten electrode faces the tube-sheet weld seam, and rotates around the axis under the drive of the welding rotary disc and gas protection to achieve welding of the sealing weld seam.

[0004] At present, most of the welding rotating disks of tube sheet sealing welding equipment adopt the design of tungsten electrode fixing and single-channel gas protection. This method has the following problems:

[0005] (1) The tungsten electrode is fixed. When the welding process needs to be developed or the pipe diameter specifications change, the tungsten electrode fixing block needs to be reprocessed, which has poor applicability.

[0006] (2) The single gas protection effect is poor, and pores and weld oxidation are easily generated during welding, which cannot guarantee the welding quality. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a welding rotating disk device for tube sheet sealing welding equipment in view of the above-mentioned deficiencies in the prior art. The tungsten electrode can be rotated by a tungsten electrode adjustment mechanism to improve the applicability of the tungsten electrode. By setting a plurality of gas screen nozzles, the inert gas is released more evenly, thereby improving the welding protection effect.

[0008] In order to solve the above problems, the technical scheme of the present invention is as follows: a welding rotating disk device of a tube sheet sealing welding equipment, the device comprises a rotating disk base and a tungsten electrode adjustment mechanism, the rotating disk base is in a disc-shaped structure as a whole, and a tungsten electrode adjustment mechanism mounting slot is provided along the radial direction of the rotating disk base; tungsten electrode adjustment mechanism mounting holes are provided on both sides of the tungsten electrode adjustment mechanism mounting slot; the tungsten electrode adjustment mechanism main body is an adjustment seat, the adjustment seat is in a fan-shaped structure as a whole, two baffles are provided in the vertical direction on the front side of the adjustment seat, the tungsten electrode is clamped by a tungsten electrode clamp block between the baffles, and the baffle and the tungsten electrode clamp block are movably connected by a locking bolt; a guide bar is provided in the vertical direction on the rear side of the adjustment seat, the size of the guide bar matches the mounting slot of the tungsten electrode adjustment mechanism, movable holes are provided at both ends of the adjustment seat in the vertical direction, the position of the movable hole matches the position of the mounting hole of the tungsten electrode adjustment mechanism, and the tungsten electrode adjustment mechanism is connected to the rotating disk base by screwing a fixing bolt into the movable hole.

[0009] A central circular hole is axially opened at the center of the rotating disk base, and rotating disk mounting holes are evenly opened around the central circular hole.

[0010] The number of the rotating disk mounting holes is four.

[0011] The rotating disk base is provided with a plurality of gas outlets to release the inert gas.

[0012] The air outlet is connected with the air sieve nozzle through the air sieve nozzle mounting hole.

[0013] The air sieve nozzle is in a conical structure as a whole, with a thread at the rear end and holes at the front end and the side.

[0014] An angle disk is engraved on the side of the adjustment seat.

[0015] The remarkable effects of the present invention are: a welding rotating disk device of a tube sheet sealing welding equipment described in the present invention, the tungsten electrode of the device realizes angle and inner and outer position adjustment, thereby improving the flexibility of the welding process window or the adaptability to different pipe diameters; the tungsten electrode adjustment mechanism has a simple structure, and an angle disk is engraved on the side, which is easy to operate and improves the convenience of using the welding equipment; the protective gas circuit adopts a multi-position arranged gas screen nozzle structure, thereby achieving full protection of the sealing weld and improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural schematic diagram of a welding rotating disk device of a tube sheet sealing welding device according to the present invention;

[0017] Figure 2 A side view of a welding rotating disk device of a tube sheet sealing welding device according to the present invention;

[0018] Figure 3It is a schematic structural diagram of a rotating disk base of a welding rotating disk device of a tube sheet sealing welding equipment according to the present invention;

[0019] Figure 4 It is a structural schematic diagram of a tungsten electrode adjustment mechanism of a welding rotating disk device of a tube sheet sealing welding equipment according to the present invention;

[0020] Figure 5 A side view of a tungsten electrode adjustment mechanism of a welding rotating disk device of a tube sheet sealing welding device according to the present invention;

[0021] Figure 6 A schematic diagram of the structure of an adjustment seat of a welding rotating disk device of a tube sheet sealing welding device according to the present invention;

[0022] Figure 7 A schematic diagram of the structure of a gas screen nozzle of a welding rotating disk device of a tube sheet sealing welding device according to the present invention;

[0023] In the figure: 1. rotating disk base; 2. tungsten electrode adjustment mechanism; 3. fixing bolt; 4. air screen nozzle; 101. tungsten electrode adjustment mechanism mounting slot; 102. tungsten electrode adjustment mechanism mounting hole; 103. air screen nozzle mounting hole; 104. rotating disk mounting hole; 201. locking bolt; 202. adjustment seat; 203. tungsten electrode clamp; 204. tungsten electrode. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

[0025] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “upper” and the like are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of the present invention, the terms “first” and “second” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connect", "set", "install", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] like Figure 1-7 As shown, a welding rotating disk device of a tube-to-sheet sealing welding device comprises a rotating disk base 1, a tungsten electrode adjustment mechanism 2,

[0029] The rotating disk base 1 is a disk-shaped structure as a whole, with a central circular hole axially opened at the center of the disk, and rotating disk mounting holes 104 are evenly opened around the central circular hole. The device is connected to other rear-end equipment through the rotating disk mounting holes 104. As an embodiment, the number of the rotating disk mounting holes 104 is four; on any rotating disk mounting hole 104, a tungsten pole adjustment mechanism mounting slot 101 is opened radially along the rotating disk base 1; tungsten pole adjustment mechanism mounting holes 102 are opened on both sides of the tungsten pole adjustment mechanism mounting slot 101;

[0030] The rotating disk base 1 is also provided with a plurality of air outlets to release inert gas. As an embodiment, the air outlets are connected to the air screen nozzle 4 through the air screen nozzle mounting hole 103. The air screen nozzle 4 is in a conical structure as a whole, with a thread at the tail end to be screwed into the air screen nozzle mounting hole 103, and holes are provided at the front end and the side.

[0031] The main body of the tungsten electrode adjustment mechanism 2 is an adjustment seat 202, and the adjustment seat 202 is fan-shaped as a whole. Two baffles are provided on the front side of the adjustment seat 202 in the vertical direction. A tungsten electrode 204 is clamped between the baffles by a tungsten electrode clamp 203. The baffle and the tungsten electrode clamp 203 are movably connected by a locking bolt 201. The tungsten electrode clamp 203 can be rotated according to actual needs to adjust the installation angle of the tungsten electrode 204, and then fixed by tightening the locking bolt 201.

[0032] A guide bar is provided on the rear side of the adjustment seat 202 in the vertical direction, and the size of the guide bar matches the tungsten pole adjustment mechanism installation slot 101, so that the tungsten pole adjustment mechanism 2 can move in the radial direction of the rotating disk base 1;

[0033] The two ends of the adjustment seat 202 are provided with movable holes in the vertical direction, and the positions of the movable holes match the positions of the tungsten electrode adjustment mechanism mounting holes 102. By screwing the fixing bolts 3 into the movable holes, the tungsten electrode adjustment mechanism 2 is connected to the rotating disk base 1.

[0034] An angle disc is engraved on the side of the adjustment seat 202 to facilitate adjustment of the tungsten pole angle.

[0035] The installation steps of the device of the present invention are as follows:

[0036] (1) Install the device on the welding equipment body;

[0037] (2) According to the specifications of the welded pipe fittings, loosen the fixing bolts 3, adjust the radial position of the tungsten electrode adjustment mechanism 2 on the rotating disk base 1, and then use the fixing bolts 3 to lock it; loosen the locking bolts 201 on the tungsten electrode adjustment mechanism 2, rotate the tungsten electrode clamp 203 to achieve the required inclination angle of the tungsten electrode 204, and then lock it;

[0038] (3) Complete the welding process parameter setting;

[0039] (4) The gas protection circuit is opened, and the protective gas enters the gas screen nozzle 4 from the rear chamber of the device, and finally forms protection for the sealed weld under the restraint of the external atmospheric cover;

[0040] (5) The welding rotary disc rotates around the central axis of the pipe to complete the welding;

[0041] (6) If the pipe specifications remain unchanged, repeat steps (4) to (5) until the welding work is completed;

[0042] (7) If the pipe specifications change, repeat steps (2) to (5) until the welding work is completed.

[0043] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A welding rotating disk device for tube sheet sealing welding equipment, characterized in that: The device comprises a rotating disk base (1) and a tungsten pole adjustment mechanism (2); the rotating disk base (1) is in the form of a disk as a whole, and a tungsten pole adjustment mechanism installation slot (101) is provided along the radial direction of the rotating disk base (1); tungsten pole adjustment mechanism installation holes (102) are provided on both sides of the tungsten pole adjustment mechanism installation slot (101); the main body of the tungsten pole adjustment mechanism (2) is an adjustment seat (202); the adjustment seat (202) is in the form of a fan-shaped structure as a whole, and two baffles are provided on the front side of the adjustment seat (202) in the vertical direction, and a tungsten pole clamping block (202) is provided between the baffles. 03) clamps a tungsten electrode (204), the baffle plate is movably connected to the tungsten electrode clamp block (203) via a locking bolt (201); a guide bar is provided on the rear side of the adjustment seat (202) in the vertical direction, the size of the guide bar matches the mounting slot (101) of the tungsten electrode adjustment mechanism, movable holes are provided at both ends of the adjustment seat (202) in the vertical direction, the position of the movable hole matches the position of the mounting hole (102) of the tungsten electrode adjustment mechanism, and the tungsten electrode adjustment mechanism (2) is connected to the rotating disk base (1) by screwing a fixing bolt (3) into the movable hole.

2. The welding rotating disk device of the tube sheet sealing welding equipment according to claim 1 is characterized in that: The rotating disk base (1) has a central circular hole axially opened at the center of the circle, and rotating disk mounting holes (104) are evenly opened around the central circular hole.

3. The welding rotating disk device of the tube-to-sheet sealing welding equipment according to claim 2 is characterized in that: The number of the rotating disk mounting holes (104) is four.

4. The welding rotating disk device of the tube sheet sealing welding equipment according to claim 1 is characterized in that: The rotating disk base (1) is provided with a plurality of gas outlet holes for releasing the inert gas.

5. The welding rotating disk device of the tube sheet sealing welding equipment according to claim 4 is characterized in that: The air outlet is connected to the air sieve nozzle (4) via the air sieve nozzle mounting hole (103).

6. The welding rotating disk device of the tube-to-sheet sealing welding equipment according to claim 5, characterized in that: The air sieve nozzle (4) is in a conical structure as a whole, with a thread provided at the rear end and holes provided at the front end and the side.

7. The welding rotating disk device of the tube-to-sheet sealing welding equipment according to claim 1, characterized in that: An angle disc is engraved on the side of the adjustment seat (202).

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