A welding device with a groove cutting function for stainless steel pipe machining

Abstract

The present application relates to the field of stainless steel pipe welding device, used for solving the problem that groove cutting and welding need to frequently change equipment, which affects welding efficiency and welding quality, in particular to a welding device with groove cutting function for stainless steel pipe processing; the present application installs rotating floating ring and welding ring on the fixed ring, so as to realize the integration of the welding device and the cutting device, and after cutting is completed, the fixed ring is moved, and the fixed leg is elongated and shortened, so as to realize the mutual fixation between the pipeline and the welding device, so that the two groups of fixed rings are fixed on the two groups of pipelines at the same time, and the welding ring is aligned with the weld position, which ensures the stability of the welding device during welding and the relative stability of the two groups of pipelines to be welded through the simultaneous fixation of the two groups of fixed rings, in addition, the two-leaf structure realizes the splitting of the welding device, which is convenient for the installation of the device.

Description

Technical Field

[0001] The invention relates to the field of stainless steel pipe welding devices, in particular to a stainless steel pipe processing welding device with a groove cutting function. Background Art

[0002] Stainless steel pipes generally need to be beveled when welding to ensure the firmness of the weld. Beveling can increase the contact area of ​​the pipe and make the weld stronger. Without beveling, large deviation or cracking is likely to occur during welding, which cannot meet the welding quality requirements and thus affect the quality of the pipe. In addition, when using pressure testing, pipe connections without bevels are prone to leakage, which seriously affects the use effect. The split-type pipe cutting and beveling machine equipment is suitable for pipe cutting and beveling maintenance in industrial and mining enterprises such as gas, oil and petrochemical industries. It is suitable for various working environments: grooves, flammable and explosive environments, and narrow spaces where noise is prohibited.

[0003] At present, the stainless steel pipe welding device in the prior art still has some shortcomings. When the existing stainless steel pipe welding device is in use, its groove cutting device and welding device are generally two independent devices, which results in the need to perform centering and welding work after the cutting is completed. Therefore, it is necessary to frequently disassemble and replace the equipment, which is not conducive to practical use. In addition, the groove completed by cutting is easily damaged during the disassembly and replacement of the equipment, thereby affecting the welding device. Therefore, a device that can integrate cutting and welding is needed to reduce the time consumed by frequent replacement and disassembly of equipment and simplify the process.

[0004] In response to the above technical problems, this application proposes a solution. Summary of the Invention

[0005] The present invention realizes the integrated processing of the welding device and the cutting device by installing a rotating floating ring and a welding ring on a fixed ring. After the cutting is completed, the fixed ring is moved so that the two sets of fixed rings are fixed on the two sets of pipes at the same time, and the welding ring is aligned with the weld position, which not only ensures the stability of the welding device during welding, but also ensures the relative stability of the two sets of welded pipes through the simultaneous fixation of the two sets of fixed rings. It solves the problem that the groove cutting and welding require frequent equipment replacement and disassembly, thereby affecting the welding efficiency and welding quality, and proposes a stainless steel pipe processing welding device with groove cutting function.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A welding device for processing stainless steel pipes with a groove cutting function comprises a first fixing ring and a second fixing ring, wherein a floating ring is rotatably connected to the outer side of the first fixing ring, and a welding ring is rotatably connected between the first fixing ring and the second fixing ring;

[0008] The first fixed ring, the second fixed ring, the floating ring and the welding ring are all divided into upper and lower petal structures, and a limiting device is fixedly installed at the separation point. The floating ring can slide on the first fixed ring through a sliding groove, and the welding ring slides between the first and second fixed rings in the form of a sliding groove;

[0009] The outer walls of the first fixed ring and the second fixed ring are fixedly installed with a support leg electric control device, and the fixed support leg is movably connected inside the support leg electric control device. The outer wall of the floating ring is fixedly installed with a blade mounting frame, and the cutting blade is installed in the blade mounting frame through a motor. A welding station is installed on the welding ring, and the floating ring and the welding ring are controlled by an electric crawling device.

[0010] As a preferred embodiment of the present invention, it also includes a welding device control system, which includes a positioning confirmation unit, a cutting monitoring unit, a welding control unit and a movement review unit;

[0011] The positioning confirmation unit is used to confirm the position of the fixed legs and automatically adjust according to the confirmation result;

[0012] The cutting monitoring unit is used to monitor the vibration during cutting and determine the vibration condition of the cutting operation according to the vibration monitoring result;

[0013] The welding control unit is used to control the operation of the welding ring and the welding station;

[0014] The mobile checking unit is used to confirm the centering conditions of the first fixing ring and the second fixing ring during welding, and control the welding control unit to send a welding instruction after the confirmation is completed.

[0015] As a preferred embodiment of the present invention, the positioning confirmation unit records each set of fixed legs as a retracted length;

[0016] The positioning confirmation unit selects two groups of contraction lengths with the smallest difference in contraction length among all fixed legs, and calculates the average value of the two selected groups of contraction lengths to obtain a basic contraction length;

[0017] The positioning confirmation unit compares the contracted length of all fixed legs on the same fixed ring with the basic contracted length, obtains the difference between the contracted length and the basic contracted length, and compares the difference with a preset threshold. If the difference is greater than the preset threshold, a deviation signal is generated, and the fixed leg that generates the deviation signal is recorded as the deviation leg.

[0018] As a preferred embodiment of the present invention, the positioning confirmation unit generates an extension signal for the deviation leg when the contraction length of the deviation leg is less than the basic contraction length, and generates a shortening signal for the deviation leg when the contraction length of the deviation leg is greater than the basic contraction length;

[0019] The positioning confirmation unit calculates the difference between the contracted length of the deviation leg and the basic contracted length, and adjusts the deviation leg accordingly according to the shortening signal or the lengthening signal, so that the deviation leg is shortened or lengthened, and the shortened or lengthened length is equal to the difference, and generates a positioning completion signal after the adjustment is completed.

[0020] As a preferred embodiment of the present invention, the cutting monitoring unit collects the vibration amplitude generated by the floating ring and records it as a vibration parameter;

[0021] The cutting monitoring unit records the vibration parameters with time as the horizontal axis and vibration amplitude as the vertical axis, collects the peaks and troughs in the recorded vibration parameter curve, and records the difference between the peaks and troughs of the vibration as the vibration span. The cutting detection unit records the vibration span as F, and obtains the vibration reference value f by multiplying the coefficient θ with the vibration span. The cutting monitoring unit records all vibrations in the vibration parameters with amplitudes greater than the vibration reference value f as strong vibrations.

[0022] As a preferred embodiment of the present invention, the cutting monitoring unit counts the frequency of strong vibrations to obtain the strong vibration frequency, and compares the strong vibration frequency with a preset frequency threshold. If the strong vibration frequency is greater than the preset frequency threshold, a vibration abnormality signal is generated; if the strong vibration frequency is less than the preset frequency threshold, no response is made.

[0023] As a preferred embodiment of the present invention, the welding control unit is used to control the rotation of the welding ring and the operation of the welding station according to a set program;

[0024] Before welding the stainless steel pipe, the stainless steel pipe processing welding device places the floating ring on the pipe port and uses the blade on the floating ring to cut the groove of the pipe port. After the cutting is completed, the position of the stainless steel pipe processing welding device is moved so that the first fixing ring and the second fixing ring are respectively fixed on the two groups of stainless steel pipes, thereby fixing the two groups of stainless steel pipes at the same time.

[0025] As a preferred embodiment of the present invention, the mobile review unit obtains the adjustment results of the fixed legs on the first fixed ring and the second fixed ring through the positioning confirmation unit before the welding control unit operates. When all the fixed legs on the first fixed ring and the second fixed ring are adjusted, a mobile review completion signal is generated and sent to the welding control unit. After obtaining the mobile review completion signal, the welding control unit performs welding work.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. In the present invention, a rotating floating ring and a welding ring are installed on a fixed ring, thereby realizing the integrated processing of the welding device and the cutting device. After the cutting is completed, the fixed ring is moved so that the two sets of fixed rings are fixed to the two sets of pipes at the same time, and the welding ring is aligned with the weld position. This not only ensures the stability of the welding device during welding, but also ensures the relative stability of the two sets of pipes being welded by the simultaneous fixation of the two sets of fixed rings, thereby avoiding the movement of the two sets of pipes during the welding process and causing welding deviation.

[0028] 2. In the present invention, during welding, the welding device is split by a two-petal structure, thereby facilitating the installation of the device. When the welding device is installed, the pipe and the welding device are fixed to each other by extending and shortening the fixed legs, thereby ensuring the stability of the welding device.

[0029] 3. In the present invention, when the fixed legs are in contact with the welding device, the control system intelligently analyzes the lengths between the multiple fixed legs and automatically adjusts them to ensure that the axis of the welding device is aligned with the axis of the pipeline, thereby ensuring the accuracy of welding and groove cutting, and ensuring the cutting quality and welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0031] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0032] Figure 2 Schematic diagram of the separation state of the present invention

[0033] Figure 3 is a system block diagram of the present invention;

[0034] Figure 4 It is a system flow chart of the present invention.

[0035] In the figure: 1. Floating ring; 2. First fixed ring; 3. Welding ring; 4. Second fixed ring; 5. Blade mounting bracket; 6. Fixed support leg; 7. Support leg electric control device; 8. Limit device; 9. Welding station. DETAILED DESCRIPTION

[0036] The following is a clear and complete description of the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Example 1:

[0038] See also Figure 1 - Figure 4 As shown, a stainless steel pipe processing welding device with a groove cutting function includes a first fixed ring 2, with a floating ring 1 and a welding ring 3 rotatably connected to both sides of the first fixed ring 2, and a second fixed ring 4 rotatably connected to the side of the welding ring 3 away from the first fixed ring 2;

[0039] The first fixing ring 2, the second fixing ring 4, the floating ring 1, and the welding ring 3 are each divided into an upper and lower petal structure, each petal being a semicircular structure. A limiting device 8 is fixedly installed at the separation between the semicircular structures of the first fixing ring 2 and the second fixing ring 4. The limiting devices 8 on the first fixing ring 2 and the second fixing ring 4 can be connected by bolts, thereby forming the first fixing ring 2 and the second fixing ring 4 into an integral ring shape.

[0040] At the same time, the floating ring 1 can slide on the first fixed ring 2 through the sliding groove. When the first fixed ring 2 forms an integral ring, the floating ring 1 rotates in the integral annular sliding groove. The welding ring 3 slides between the first fixed ring 2 and the second fixed ring 4 in the form of a sliding groove. When the first fixed ring 2 and the second fixed ring 4 are connected to form an integral ring, the welding ring 3 rotates in the circular sliding groove formed by the first fixed ring 2 and the second fixed ring 4.

[0041] The outer walls of the first and second fixing rings 2 and 4 are fixedly mounted with an outrigger electronic control device 7, which is movably connected to a fixed leg 6 inside the outrigger electronic control device 7. The fixed leg 6 passes through the first or second fixing ring 2 and 4, and multiple groups of outrigger electronic control devices 7 and fixed legs 6 are evenly distributed on the first and second fixing rings 2 and 4.

[0042] A blade mounting bracket 5 is fixedly mounted on the outer wall of the floating ring 1. A motor is provided in the blade mounting bracket 5. The output end of the motor is used to install a cutting blade, and the pipe groove is cut by the cutting blade. A welding station 9 is installed on the welding ring 3. The area of ​​the welding station 9 located on the inner side of the welding ring 3 is the welding gun head, and the area located on the outer side of the welding ring 3 is used to connect the cable for power supply. The floating ring 1 and the welding ring 3 are controlled by an electric crawling device, thereby controlling the floating ring 1 or the welding ring 3 to rotate.

[0043] Example 2:

[0044] See also Figure 1 - Figure 4 As shown, a welding device for processing stainless steel pipes with a groove cutting function also includes a welding device control system, which includes a positioning confirmation unit, a cutting monitoring unit, a welding control unit, and a movement review unit. The positioning confirmation unit obtains the extended length of the fixed legs 6 through the leg electronic control device 7, and the positioning confirmation unit records the retracted length of each group of fixed legs 6;

[0045] The positioning confirmation unit compares the retracted lengths of the fixed legs 6 on the same fixed ring, thereby selecting two groups of retracted lengths with the smallest difference in retracted lengths among all the fixed legs 6, and calculating the average value of the two selected groups of retracted lengths to obtain the basic retracted length;

[0046] The positioning confirmation unit compares the retracted lengths of all the fixed legs 6 on the same fixed ring with the basic retracted length, obtains the difference between the retracted length and the basic retracted length, and compares the difference with a preset threshold. If the difference is greater than the preset threshold, a deviation signal is generated, and the fixed leg 6 that generates the deviation signal is recorded as a deviation leg. If the difference is not greater than the preset threshold, a normal signal is generated.

[0047] After obtaining the deviation leg, the positioning confirmation unit compares the contracted length of the deviation leg with the basic contracted length. If the contracted length of the deviation leg is less than the basic contracted length, an extension signal is generated for the deviation leg. If the contracted length of the deviation leg is greater than the basic contracted length, a shortening signal is generated for the deviation leg.

[0048] The positioning confirmation unit calculates the difference between the contracted length of the deviation leg and the basic contracted length, and adjusts the deviation leg accordingly according to the shortening signal or the lengthening signal, so that the deviation leg is shortened or lengthened, and the shortened or lengthened length is equal to the difference, and generates a positioning completion signal after the adjustment is completed, so that the extension length of the fixed leg 6 on the fixed ring is unified, ensuring that the center point of the first fixed ring 2 and the second fixed ring 4 coincides with the axis of the pipeline.

[0049] Example 2:

[0050] See also Figure 1 - Figure 4 As shown, after receiving the positioning completion signal from the positioning confirmation unit, the cutting monitoring unit controls the rotation of the blade on the blade mounting frame 5 and the floating ring 1, thereby achieving the cutting of the pipe groove. During the blade cutting process, the cutting monitoring unit collects the vibration amplitude generated by the floating ring 1 and records it as a vibration parameter.

[0051] The cutting monitoring unit records the vibration parameters with time as the horizontal axis and vibration amplitude as the vertical axis. The peaks and troughs in the recorded vibration parameter curve are collected, and the difference between the peaks and troughs of the vibration is recorded as the vibration span. The cutting detection unit records the vibration span as F, and calculates the product of the coefficient θ and the vibration span to obtain the vibration reference value f. The cutting monitoring unit records all vibrations in the vibration parameters with an amplitude greater than the vibration reference value f as strong vibrations.

[0052] The cutting monitoring unit counts the frequency of strong vibrations to obtain the strong vibration frequency, and compares the strong vibration frequency with the preset frequency threshold. If the strong vibration frequency is greater than the preset frequency threshold, a vibration abnormality signal is generated. If the strong vibration frequency is less than the preset frequency threshold, no response is given.

[0053] After obtaining the abnormal vibration signal, the cutting monitoring unit will remind the vibration through the sound and light alarm device.

[0054] Example 3:

[0055] See also Figure 1 - Figure 4 As shown, the welding control unit is used to control the rotation of the welding ring 3 and the operation of the welding station 9 according to a set program, thereby achieving the welding of the stainless steel pipe. Before welding the stainless steel pipe, the stainless steel pipe processing welding device moves the floating ring 1 to the end of the pipe, and the blade on the floating ring 1 cuts the groove of the pipe end. After the cutting is completed, the position of the stainless steel pipe processing welding device is moved so that the first fixing ring 2 and the second fixing ring 4 are respectively fixed to the two groups of stainless steel pipes, thereby simultaneously fixing the two groups of stainless steel pipes, and the working position of the welding station 9 is aligned with the two groups of stainless steel pipes to achieve the welding operation of the stainless steel pipes.

[0056] Before the welding control unit starts working, the mobile review unit obtains the adjustment results of the fixed legs 6 on the first fixed ring 2 and the second fixed ring 4 through the positioning confirmation unit. When all the fixed legs 6 on the first fixed ring 2 and the second fixed ring 4 are adjusted, a mobile review completion signal is generated and sent to the welding control unit. After obtaining the mobile review completion signal, the welding control unit performs welding work.

[0057] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A welding device for stainless steel pipe processing with groove cutting function, characterized in that: It comprises a first fixing ring (2) and a second fixing ring (4), wherein the outer side of the first fixing ring (2) is rotatably connected to a floating ring (1), and a welding ring (3) is rotatably connected between the first fixing ring (2) and the second fixing ring (4); The first fixed ring (2), the second fixed ring (4), the floating ring (1) and the welding ring (3) are all divided into upper and lower petal structures, and the separation positions are all fixedly installed with a limiting device (8); the floating ring (1) can slide on the first fixed ring (2) through a sliding groove, and the welding ring (3) slides between the first fixed ring (2) and the second fixed ring (4) in the form of a sliding groove; The outer walls of the first fixed ring (2) and the second fixed ring (4) are fixedly mounted with a leg electric control device (7), the inner portion of the leg electric control device (7) is movably connected with a fixed leg (6), the outer wall of the floating ring (1) is fixedly mounted with a blade mounting frame (5), a cutting blade is mounted in the blade mounting frame (5) via a motor, a welding station (9) is mounted on the welding ring (3), and the floating ring (1) and the welding ring (3) are controlled by an electric crawling device; It also includes a welding device control system, which includes a positioning confirmation unit, a cutting monitoring unit, a welding control unit and a movement review unit; The positioning confirmation unit is used to confirm the position of the fixed leg (6) and automatically adjust it according to the confirmation result; The cutting monitoring unit is used to monitor the vibration during cutting and determine the vibration condition of the cutting operation according to the vibration monitoring result; The welding control unit is used to control the operation of the welding ring (3) and the welding station (9); The mobile checking unit is used to confirm the centering conditions of the first fixing ring (2) and the second fixing ring (4) during welding, and to control the welding control unit to send a welding instruction after the confirmation is completed; The welding control unit is used to control the rotation of the welding ring (3) and the operation of the welding station (9) according to a set program; Before welding the stainless steel pipes, the stainless steel pipe processing welding device cuts the groove of the pipe port through the blade on the floating ring (1). After the cutting is completed, the position of the stainless steel pipe processing welding device is moved so that the first fixing ring (2) and the second fixing ring (4) are respectively fixed on the two groups of stainless steel pipes, thereby fixing the two groups of stainless steel pipes at the same time.

2. The stainless steel pipe processing welding device with groove cutting function according to claim 1, characterized in that: The positioning confirmation unit records the extended length of each set of fixed legs (6) as the retracted length; The positioning confirmation unit selects two groups of contraction lengths with the smallest difference in contraction length among all fixed legs (6), and calculates the average value of the two selected groups of contraction lengths to obtain a basic contraction length; The positioning confirmation unit compares the contracted lengths of all fixed legs (6) on the same fixed ring with the basic contracted length, obtains the difference between the contracted length and the basic contracted length, and compares the difference with a preset threshold value. If the difference is greater than the preset threshold value, a deviation signal is generated, and the fixed leg (6) that generates the deviation signal is recorded as a deviation leg.

3. The stainless steel pipe processing welding device with groove cutting function according to claim 2, characterized in that: The positioning confirmation unit generates an extension signal for the deviation leg when the contracted length of the deviation leg is less than the basic contracted length, and generates a shortening signal for the deviation leg when the contracted length of the deviation leg is greater than the basic contracted length; The positioning confirmation unit calculates the difference between the contracted length of the deviation leg and the basic contracted length, and adjusts the deviation leg accordingly according to the shortening signal or the lengthening signal, so that the deviation leg is shortened or lengthened, and the shortened or lengthened length is equal to the difference, and generates a positioning completion signal after the adjustment is completed.

4. The stainless steel pipe processing welding device with groove cutting function according to claim 3, characterized in that: The cutting monitoring unit collects the vibration amplitude generated by the floating ring (1) and records it as a vibration parameter; The cutting monitoring unit records the vibration parameters with time as the horizontal axis and vibration amplitude as the vertical axis, collects the peaks and troughs in the recorded vibration parameter curve, and records the difference between the peaks and troughs of the vibration as the vibration span. The cutting detection unit records the vibration span as F, and obtains the vibration reference value f by multiplying the coefficient θ with the vibration span. The cutting monitoring unit records all vibrations in the vibration parameters with amplitudes greater than the vibration reference value f as strong vibrations.

5. The stainless steel pipe processing welding device with groove cutting function according to claim 4, characterized in that: The cutting monitoring unit counts the frequency of strong vibration to obtain the strong vibration frequency, and compares the strong vibration frequency with a preset frequency threshold. If the strong vibration frequency is greater than the preset frequency threshold, a vibration abnormality signal is generated; if the strong vibration frequency is less than the preset frequency threshold, no response is made.

6. The stainless steel pipe processing welding device with groove cutting function according to claim 5, characterized in that: Before the welding control unit operates, the mobile review unit obtains the adjustment results of the fixed legs (6) on the first fixed ring (2) and the second fixed ring (4) through the positioning confirmation unit. When all the fixed legs (6) on the first fixed ring (2) and the second fixed ring (4) are adjusted, a mobile review completion signal is generated and sent to the welding control unit. After obtaining the mobile review completion signal, the welding control unit performs welding.

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