Tube panel welding device and welding method

Abstract

The invention discloses a tube panel welding device and method. The tube panel welding device comprises a clamping mechanism, a positioning mechanism, a welding mechanism, a detection mechanism, an early warning mechanism and a control mechanism. The clamping mechanism is suitable for fixing a to-be-welded part; the positioning mechanism is suitable for limiting and supporting the to-be-welded part in the welding process; the control mechanism is suitable for controlling the welding mechanism to weld a joint of the to-be-welded part and controlling the flow of the cooling medium at the inlet end of the clamping mechanism so that the temperature of the cooling medium at the outlet end of the clamping mechanism can be smaller than a threshold value. And the control mechanism is further suitable for controlling the welding mechanism to stop running and controlling the early warning mechanism to carry out early warning when the flow of the cooling medium in the clamping mechanism is not changed and leakage of the steel pipe is determined according to the change of the pressure in the steel pipe in the welding process. A to-be-welded part is effectively fixed, and the tube panel is prevented from being twisted and bent; during welding, the to-be-welded part is cooled, effective leakage detection is performed on the steel pipe of the to-be-welded part, and the quality of the pipe panel is improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a tube panel welding device and a welding method. Background Art

[0002] The tube panel is a panel-type heating surface arranged in the furnace, generally including water-cooled panel-type heating surface (belonging to the water circulation system) and panel-type superheater. Because the heating surface is arranged in the furnace and is made into a panel, it is collectively called a tube panel. At present, with the improvement of boiler parameters, the material grade of the tube panel in the boiler is also gradually improving.

[0003] For stainless steel products, such as Figure 1-2 As shown, the welded parts of the tube panel are composed of multiple steel tubes 91, and the steel tubes 91 are connected and fixed by welding through flat steel 91. If the stainless steel tube panel products of the above structure type are welded by conventional gantry horizontal splicing, the tube panel welded by the gantry welding method is very likely to have an "S"-shaped side bend in the axial direction or wave distortion in the plane direction (such as Figure 3 As shown). The tube screen products also need to be calibrated and leveled later, which results in a long manufacturing cycle and high manufacturing cost for the tube screen products, which is not conducive to workshop production.

[0004] During the welding process of the parts to be welded, the temperature of the parts to be welded will also affect the deformation of the final tube panel. In addition, during the welding process of the parts to be welded, there is a risk of welding leakage of the steel pipe, which will cause the manufactured tube panel to be unable to be used in the water circulation system. If the detection device is used to detect leakage on the tube panel after the parts to be welded are welded, the efficiency is low.

[0005] In summary, the tube panels produced by the existing welding devices are of low quality and some of the tube panels have leakage risks. Summary of the invention

[0006] The technical problem to be solved by the present invention is that the quality of the tube panels produced by the existing welding device is low, and some of the tube panels have the risk of leakage.

[0007] On the one hand, the present invention discloses a tube panel welding device, which is suitable for welding the seams of parts to be welded, wherein the parts to be welded include a plurality of steel pipes and a plurality of flat steels, wherein the plurality of steel pipes are arranged in parallel and spaced apart, and the flat steels are arranged between adjacent steel pipes; The tube panel welding device comprises: a clamping mechanism, a positioning mechanism, a welding mechanism, a detection mechanism, an early warning mechanism and a control mechanism; The clamping mechanism is detachably inserted into the welding mechanism, and the clamping mechanism includes: a first positioning member, a second positioning member and two side positioning members; the first positioning member and the second positioning member are distributed at both ends of the workpiece to be welded, a first cooling channel is provided in the first positioning member, and the first cooling channel is suitable for receiving a cooling medium during welding; a second cooling channel is provided in the second positioning member, and the second cooling channel is suitable for discharging a cooling medium during welding; the first positioning member and the second positioning member are respectively suitable for fixing both ends of the steel pipe, and at the same time, the first cooling channel is connected to the second cooling channel through the steel pipe; the two side positioning members are distributed on both sides of the workpiece to be welded, and the two ends of the side positioning member are respectively detachably connected to the first positioning member and the second positioning member, and the two side positioning members are suitable for fixing both sides of the workpiece to be welded during welding; The positioning mechanism is detachably arranged between the two side positioning members, and the positioning mechanism is suitable for limiting and supporting the steel pipe and the flat steel during welding; The detection mechanism is suitable for detecting the pressure in the steel pipe, the flow rate of the cooling medium in the first cooling channel and the temperature of the cooling medium in the second cooling channel during the welding process; The control mechanism is suitable for controlling the welding mechanism to weld the seams of the parts to be welded, and controlling the flow rate of the cooling medium in the first cooling channel so that the temperature of the cooling medium in the second cooling channel is less than a threshold value; the control mechanism is also suitable for controlling the welding mechanism to stop running and controlling the early warning mechanism to issue an early warning when the flow rate of the cooling medium in the first cooling channel remains unchanged during the welding process and the steel pipe is determined to be leaking according to the pressure change in the steel pipe. Through the cooperation of the clamping mechanism, the positioning mechanism, the welding mechanism, the detection mechanism, the early warning mechanism and the control mechanism, the parts to be welded are effectively fixed to prevent the tube panel from twisting and bending. During welding, the parts to be welded are effectively cooled and the steel pipe is effectively leak-detected to improve the quality of the tube panel.

[0008] Optionally, the first positioning member includes: a first positioning body and a first cooling pipe; The first positioning body comprises: a first body, a tightening bolt and a plurality of joints; Two installation channels are provided on the first body at intervals, and the two installation channels are respectively suitable for slidably inserting one end of the two side positioning members; a cavity is provided in the first body, and the cavity is located between the two installation channels and is not connected to the installation channels; The holding bolt is threadedly connected to the first body, and the holding bolt extends along a first direction and extends into the installation channel; the holding bolt is suitable for holding the side wall of the side positioning member tightly during welding, so that the side positioning member is fixed in the installation channel; The first cooling pipe is arranged on the first main body, and the first cooling pipe is communicated with the cavity; A plurality of the joints are arranged on the first body at intervals, the joints are communicated with the cavity, and the joints are suitable for being detachably connected to the inner hole of the steel pipe during welding; The first cooling channel includes the first cooling pipe, the cavity and the joint; The second positioning member includes: a second positioning body and a second cooling pipe; The second positioning body has the same structure as the first positioning body; the second cooling pipe is arranged on the first body of the second positioning body, and the second cooling pipe is communicated with the cavity of the second positioning body; The second cooling channel includes the second cooling pipe, the cavity of the second positioning body and the joint of the second positioning body. The above solution is adopted to achieve effective fixation of the workpiece to be welded.

[0009] Optionally, a rubber ring is mounted on the outside of the joint, and the joint is suitable for being detachably connected to the inner hole of the steel pipe through the rubber ring during welding. The above solution effectively protects the joint and strengthens the connection between the joint and the steel pipe.

[0010] Optionally, the detection mechanism includes a flow meter, a thermometer and a pressure sensor; The flow meter is arranged at the inlet end of the first cooling tube, and the flow meter is suitable for detecting the flow rate of the cooling medium in the first cooling tube during the welding process; The thermometer is arranged at the outlet end of the second cooling tube, and the thermometer is suitable for detecting the temperature of the cooling medium in the second cooling tube during the welding process; The pressure sensor is arranged on the joint of the second positioning body, and the pressure sensor is suitable for detecting the pressure in the steel pipe during the welding process. With the above solution, the flow rate of the cooling medium in the first cooling pipe, the temperature of the cooling medium in the second cooling pipe and the pressure in the steel pipe can be effectively detected during the welding process.

[0011] Optionally, the side positioning member comprises: square steel and a reinforcing plate; The two ends of the square steel are detachably connected to the first positioning member and the second positioning member respectively; one side of the square steel is suitable for abutting against one side of the workpiece to be welded during welding; The reinforcing plate is arranged on the other side of the square steel, and the two ends of the reinforcing plate are suitable for respectively pressing against the first positioning member and the second positioning member during welding. With the above solution, the square steel is light and easy to carry; the reinforcing plate effectively limits the first positioning member and the second positioning member.

[0012] Optionally, the positioning mechanism comprises: a positioning block; The positioning block is detachably arranged between the two side positioning members; a positioning groove and a positioning plane are provided on one side of the positioning block, and the other side of the positioning block is flush with the side positioning member; The positioning groove is suitable for limiting the side wall of the steel pipe during welding, and the positioning plane is suitable for supporting the flat steel during welding. The above scheme is adopted to achieve support and limitation of the welded parts.

[0013] Optionally, the welding mechanism comprises: a base, a driving module and a welding robot; The base is provided with a slot, and the slot is suitable for being detachably connected with the clamping mechanism during the welding process; The driving module is arranged on the base, the welding robot is assembled on the driving module, and the driving module is suitable for driving the welding robot to move during the welding process.

[0014] Optionally, the clamping mechanism is adapted to be arranged vertically relative to the base during welding, and the welding mechanism further comprises: a lifting device; The lifting device is arranged at one end of the base, and the lifting device is suitable for adjusting the height of one end of the base so that the base is inclined; The outlet end of the second cooling channel is arranged upward. The above scheme is adopted to facilitate the cooling medium to fill all the steel pipes in the clamping mechanism, so that the welded parts can be fully cooled.

[0015] Optionally, the control mechanism includes: a regulating valve and a controller; The regulating valve is arranged at the inlet end of the first cooling channel; The controller is suitable for controlling the welding mechanism to weld the seam of the welded parts, and controlling the regulating valve to adjust the flow of the cooling medium in the first cooling channel so that the temperature of the cooling medium in the second cooling channel is less than the threshold value; the controller is also suitable for controlling the welding mechanism to stop running and controlling the early warning mechanism to issue an early warning when the regulating valve does not adjust the flow of the cooling medium in the first cooling channel and the steel pipe is determined to be leaking according to the pressure change in the steel pipe during the welding process. The above scheme is adopted to effectively monitor the cooling condition of the welded parts and whether the steel pipe is leaking.

[0016] On the other hand, the present invention also discloses a welding method using the above-mentioned tube panel welding device, which specifically comprises the following steps: S1, assembling one end of the two side positioning members on the first positioning member; S2, detachably disposing the positioning mechanism between the two side positioning members, and then assembling the steel pipe and the flat steel (92) on the first positioning member; S3, assembling the second positioning member at the other end of the two side positioning members so that the clamping mechanism can effectively fix the steel pipe and the flat steel; S4. Spot weld the joint between the steel pipe and the flat steel; S5, removing the positioning mechanism from the clamping mechanism, and detachably inserting the clamping mechanism into the welding mechanism; S6. The control mechanism controls the welding mechanism to weld the joint between the steel pipe and the flat steel, and controls the flow rate of the cooling medium in the first cooling channel so that the temperature of the cooling medium in the second cooling channel is less than a threshold value; at the same time, during the welding process, when the flow rate of the cooling medium in the first cooling channel remains unchanged, and the steel pipe is determined to be leaking based on the pressure change in the steel pipe, the control mechanism controls the welding mechanism to stop operating and controls the early warning mechanism to issue an early warning.

[0017] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art: Through the coordination of the clamping mechanism, positioning mechanism, welding mechanism, detection mechanism, early warning mechanism and control mechanism, the welded parts can be effectively fixed to prevent the tube panel from twisting and bending. During welding, the welded parts can be effectively cooled and the steel pipe can be effectively leak-tested to improve the quality of the tube panel.

[0018] The above description of the disclosed contents and the following description of the embodiments are used to demonstrate and explain the spirit and principle of the present invention, and to provide a further explanation of the scope of the patent application of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The specific implementation modes of the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the tube screen; Figure 2 is a schematic diagram of a tube screen; Figure 3 This is a schematic diagram of the "S"-shaped side bend of the tube panel; Figure 4 It is a schematic diagram of the three-dimensional structure of the tube panel welding device welding the seam of the parts to be welded in the present invention; Figure 5 It is a schematic diagram of the exploded structure of the clamping mechanism and the positioning mechanism in the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the clamping mechanism in the present invention; Figure 7 is a cross-sectional view of the first positioning member in the present invention; Figure 8 is a schematic diagram of the three-dimensional structure of the first positioning member in the present invention; Fig. 9 Schematic diagram of the three-dimensional structure of the joint in the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the positioning block in the present invention; Fig.11 It is a cross-sectional schematic diagram of the positioning block in the present invention installed on the clamping mechanism; Fig.12 It is a partial structural schematic diagram of the clamping mechanism in the present invention; Fig.13 It is a schematic diagram of two side positioning members installed on the first positioning member in the present invention; Fig.14 It is a schematic diagram of the steel pipe and the flat steel being installed on the clamping mechanism through the positioning block in the present invention; Fig.15 It is a schematic diagram of the second positioning member in the present invention being installed on two side positioning members; Fig.16 Schematic diagram (I) of welding the seam of the parts to be welded by the tube panel welding device of the present invention; Fig.17 Schematic diagram (II) of welding the seams of the parts to be welded by the tube panel welding device in the present invention; Fig.18 It is a schematic diagram of the parts to be welded in the present invention.

[0021] Description of Figure Numbers: 10. First positioning member; 11. First cooling pipe; 12. First main body; 121. Installation channel; 122. Connecting rod; 123. End rod; 124. First fixing block; 125. Second fixing block; 13. Tightening bolt; 14. Joint; 141. Rubber ring; 20. Second positioning member; 21. Second cooling pipe; 30. Side positioning member; 31. Square steel; 32. Reinforcement plate; 40. Positioning block; 50. Base; 51. Hinge seat; 60. Drive module; 70. Welding machine robot; 80. Lifting device; 90. Parts to be welded; 91. Steel pipe; 92. Flat steel. DETAILED DESCRIPTION

[0022] The following specific embodiments illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may extend based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0023] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 invention.

[0024] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0025] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "provided with", "set", "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 directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0026] Example 1 On the one hand, the present invention discloses a tube panel welding device, see Figure 6 As shown, it is suitable for welding the seams of the parts 90 to be welded.

[0027] Among them, see Figure 1-2 As shown, the welded part 90 includes a plurality of steel pipes 91 and a plurality of flat steels 92. The plurality of steel pipes 91 are arranged in parallel and spaced apart. Flat steels 92 are arranged between adjacent steel pipes 91. The flat steels 92 are arranged in parallel with the steel pipes 91. The tube panel welding device is suitable for welding the joint between the steel pipes 91 and the flat steels 92 (i.e., the joint of the welded part 90).

[0028] In this embodiment, the workpiece 90 to be welded includes eight steel pipes 91 and nine flat steels 92. The steel pipes 91 and the flat steels 92 are arranged alternately. Both sides of the workpiece 90 to be welded are flat steels 92. The length of the flat steel 92 is less than or equal to the length of the steel pipe 91. The end faces of both ends of the steel pipe 91 coincide with the end faces of both ends of the workpiece 90 to be welded, and the flat steel 92 is located between the two end faces of the steel pipe 91 and does not protrude from the two end faces of the steel pipe 91.

[0029] The tube panel welding device comprises a clamping mechanism, a positioning mechanism, a welding mechanism, a detection mechanism, an early warning mechanism and a control mechanism.

[0030] The clamping mechanism is suitable for fixing both ends and both sides of the workpiece 90 to be welded during the welding process. Figure 5-6 As shown, the clamping mechanism includes a first positioning member 10, a second positioning member 20 and two side positioning members 30. Among them, the first positioning member 10 and the second positioning member 20 are distributed at both ends of the workpiece 90 to be welded. A first cooling channel is provided in the first positioning member 10, and the first cooling channel is suitable for receiving a cooling medium during welding. A second cooling channel is provided in the second positioning member 20, and the second cooling channel is suitable for discharging a cooling medium during welding. The first positioning member 10 and the second positioning member 20 are respectively suitable for fixing the two ends of the steel pipe 91, and at the same time, the first cooling channel is connected to the second cooling channel through the steel pipe 91. The two side positioning members 30 are distributed on both sides of the workpiece 90 to be welded. The two ends of the side positioning member 30 are detachably connected to the first positioning member 10 and the second positioning member 20, respectively, and the two side positioning members 30 are suitable for fixing the two sides of the workpiece 90 to be welded during welding. In summary, the first positioning member 10, the second positioning member 20 and the two side positioning members 30 enclose a fixed frame for fixing the workpiece 90 to be welded.

[0031] The cooling medium includes but is not limited to high pressure cold air, cold water, etc.

[0032] In this embodiment, two ends of the side positioning member 30 are respectively perpendicular to the first positioning member 10 and the second positioning member 20. During the welding process, the length direction of the steel pipe 91 is parallel to the side positioning member 30.

[0033] See also Fig.11 , Fig.13 As shown, the positioning mechanism is detachably arranged between the two side positioning members 30. The positioning mechanism is suitable for limiting and supporting the steel pipe 91 and the flat steel 92 during the welding process.

[0034] See also Figure 4 As shown, the clamping mechanism is detachably inserted into the welding mechanism. The welding mechanism is suitable for welding the seams of the parts 90 to be welded.

[0035] The detection mechanism is suitable for detecting the pressure inside the steel pipe 91, the flow rate of the cooling medium in the first cooling channel, and the temperature of the cooling medium in the second cooling channel during the welding process.

[0036] The control mechanism is electrically connected to the welding mechanism, the detection mechanism and the early warning mechanism. The control mechanism is suitable for controlling the welding mechanism to weld the seam of the workpiece 90 to be welded, and controlling the flow rate of the cooling medium in the first cooling channel so that the temperature of the cooling medium in the second cooling channel is less than the threshold value. The control mechanism is also suitable for controlling the welding mechanism to stop operating and controlling the early warning mechanism to issue an early warning when the flow rate of the cooling medium in the first cooling channel remains unchanged during the welding process and when it is determined that the steel pipe 91 leaks according to the pressure change in the steel pipe 91.

[0037] For further information, see Figure 7-Figure 8 As shown, the first positioning member 10 includes a first positioning body and a first cooling pipe 11. Specifically, the first positioning body includes a first body 12, a tightening bolt 13 and a plurality of joints 14. Two mounting channels 121 are provided on the first body 12 at intervals. The two mounting channels 121 are respectively suitable for slidably inserting one end of the two side positioning members 30. A cavity is provided in the first body 12, and the cavity is located between the two mounting channels 121 and is not connected to the mounting channels 121. The tightening bolt 13 is threadedly connected to the first body 12. The tightening bolt 13 extends along a first direction and extends into the mounting channel 121. The tightening bolt 13 is suitable for tightening the side wall of the side positioning member 30 during the welding process so that the side positioning member 30 is fixed in the mounting channel 121. The first cooling pipe 11 is provided on the first body 12, and the first cooling pipe 11 is connected to the cavity. A plurality of joints 14 are provided on the first body 12 at intervals. The joint 14 is connected to the cavity. The joint 14 is suitable for being detachably connected to the inner hole of the steel pipe 91 during the welding process. The first cooling channel includes a first cooling pipe 11 , a cavity and a joint 14 .

[0038] In this embodiment, in the first positioning member 10 , there is one first cooling tube 11 and eight connectors 14 .

[0039] In this embodiment, the first direction is perpendicular to the length direction of the side positioning member 30 .

[0040] In this embodiment, the first body 12 includes a connecting rod 122, two end rods 123, two first fixed blocks 124 and two second fixed blocks 125. The cavity is arranged in the connecting rod 122. The first cooling pipe 11 is fixed in the connecting rod 122. The two end rods 123 are fixed at both ends of the connecting rod 122. The end rod 123 extends along the length direction of the connecting rod 122. A slideway is arranged between the end rod 123 and the connecting rod 122. The first fixed block 124 and the second fixed block 125 are respectively arranged on both sides of the slideway. Among them, the first fixed block 124 is fixed on the connecting rod 122, and the second fixed block 125 is fixed on the end rod 123. The installation channel 121 is composed of the gap between the first fixed block 124 and the second fixed block 125 and the slideway. The tightening bolt 13 is assembled on the second fixed block 125.

[0041] Furthermore, a through hole is formed on the second fixing block 125, and a nut is fixed in the through hole. The tightening bolt 13 is assembled in the nut. Compared with the threaded hole, machining the through hole on the second fixing block 125 can effectively reduce the cost.

[0042] Further, in order to effectively protect the joint 14 and strengthen the connection between the joint 14 and the steel pipe 91, please refer to Fig. 9 As shown, the outside of the joint 14 is equipped with a rubber ring 141. The joint 14 is suitable for being detachably connected to the inner hole of the steel pipe 91 through the rubber ring 141 during the welding process. During the welding process, the cooling medium in the first cooling channel can cool the joint 14 and the rubber ring 141, protect the joint 14 and the rubber ring 141, and extend the service life.

[0043] For further information, see Fig.16 As shown, the second positioning member 20 includes a second positioning body and a second cooling pipe 21. The second positioning body has the same structure as the first positioning body, so it will not be described in detail. The second cooling pipe 21 is arranged on the first body 12 of the second positioning body, and the second cooling pipe 21 is connected to the cavity of the second positioning body. The second cooling channel includes the second cooling pipe 21, the cavity of the second positioning body and the joint 14 of the second positioning body.

[0044] In this embodiment, in the second positioning member 20 , there is one second cooling pipe 21 and eight joints 14 .

[0045] For further information, see Figure 5As shown, the side positioning member 30 includes a square steel 31 and a reinforcing plate 32. The two ends of the square steel 31 are detachably connected to the first positioning member 10 and the second positioning member 20, respectively. Specifically, the two ends of the square steel 31 can be slidably inserted into the corresponding installation channels 121, and the tightening bolts 13 are pressed against the side wall of the square steel 31 during the welding process. One side of the square steel 31 is suitable for abutting against one side of the workpiece 90 to be welded during the welding process. The reinforcing plate 32 is arranged on the other side of the square steel 31. The two ends of the reinforcing plate 32 are suitable for respectively pressing against the first positioning member 10 and the second positioning member 20 during the welding process.

[0046] In this embodiment, the length of the reinforcing plate 32 is equal to the length of the steel pipe 91 .

[0047] For further information, see Figure 10-11 As shown, the positioning mechanism includes a positioning block 40. The positioning block 40 is detachably arranged between the positioning members 30 on both sides. When the positioning block 40 is arranged between the positioning members 30 on both sides, a positioning groove and a positioning plane are provided on one side of the positioning block 40, and the other side of the positioning block 40 is flush with the side positioning member 30. The positioning groove is suitable for limiting and supporting the side wall of the steel pipe 91 during the welding process. The positioning plane is suitable for supporting the flat steel 92 during the welding process.

[0048] In this embodiment, there are three positioning blocks 40 , and the length direction of the positioning blocks 40 is perpendicular to the length direction (ie, the first direction) of the square steel 31 . The three positioning blocks 40 are distributed at equal intervals along the length direction of the square steel 31 .

[0049] The detection mechanism includes a flow meter, a thermometer and a pressure sensor (not shown in the figure). The flow meter is arranged at the inlet end of the first cooling tube 11. The flow meter is suitable for detecting the flow rate of the cooling medium in the first cooling tube 11 during the welding process. The thermometer is arranged at the outlet end of the second cooling tube 21. The thermometer is suitable for detecting the temperature of the cooling medium in the second cooling tube 21 during the welding process. The pressure sensor is arranged on the joint 14 of the second positioning body. The pressure sensor is suitable for detecting the pressure in the steel pipe 91 during the welding process.

[0050] In this embodiment, when the refrigerant medium is high pressure cold air, the flow meter is a gas flow meter and the pressure sensor is a gas pressure sensor. When the refrigerant medium is cold water, the flow meter is a liquid flow meter and the pressure sensor is a liquid pressure sensor.

[0051] For further information, see Figure 4 As shown, the welding mechanism includes a base 50, a driving module 60 and a welding robot 70. A slot is provided on the base 50, and the slot is suitable for being detachably connected to the clamping mechanism during the welding process. The driving module 60 is arranged on the base 50, and the welding robot 70 is assembled on the driving module 60, and the driving module 60 is suitable for driving the welding robot 70 to move during the welding process.

[0052] In this embodiment, the end of the first positioning member 10 and the end of the second positioning member 20 are detachably connected to the corresponding slots respectively.

[0053] Furthermore, the slot on the base 50 is vertically arranged, and a limiting protrusion is provided in the slot to prevent the clamping mechanism from slipping along the length direction of the side positioning member 30 after being installed on the base 50 .

[0054] In this embodiment, the driving module 60 is a linear driving module. The welding robot 70 can be lifted, rotated and extended according to the position to be welded.

[0055] In this embodiment, there are two drive modules 60 and two welding robots 70. During the welding process, the two drive modules 60 are symmetrically arranged on both sides of the clamping mechanism. The two welding robots 70 are used to weld the seams on both sides of the workpiece 90 to be welded.

[0056] The early warning mechanism includes, but is not limited to, a buzzer, an indicator light, etc. (not shown in the figure). In this embodiment, the early warning mechanism includes a buzzer and an indicator light. The buzzer and the indicator light are both arranged on the base 50, so that the staff can check the leakage of the steel pipe 91 in time according to the early warning of the early warning mechanism.

[0057] The control mechanism includes a regulating valve and a controller (not shown in the figure). The regulating valve is arranged at the inlet end of the first cooling pipe 11 and is arranged upstream of the flow meter. The controller is suitable for controlling the welding mechanism to weld the joint of the workpiece 90 to be welded, and controlling the regulating valve to adjust the flow rate of the cooling medium in the first cooling channel so that the temperature of the cooling medium in the second cooling channel is less than a threshold value. In this embodiment, the threshold value is 30°C to 120°C.

[0058] The controller is also suitable for controlling the welding mechanism to stop running and controlling the early warning mechanism to issue an early warning when the regulating valve does not adjust the flow rate of the cooling medium in the first cooling channel and the steel pipe 91 is determined to be leaking according to the pressure change in the steel pipe 91 during the welding process. Specifically, when the regulating valve does not adjust the flow rate of the cooling medium in the first cooling channel, the controller determines whether the steel pipe 91 is leaking according to the pressure change in the steel pipe 91. When the controller determines that the steel pipe 91 is leaking according to the pressure change in the steel pipe 91, the welding mechanism is controlled to stop running and the early warning mechanism is controlled to issue an early warning, so that the staff can promptly repair the leaking part of the steel pipe 91 to avoid leakage of the pipe screen during use after welding.

[0059] On the other hand, the present invention discloses a welding method using the above-mentioned tube panel welding device. The welding method specifically comprises the following steps: S1, assemble one end of the two side positioning members 30 on the first positioning member 10, such as Fig.12 As shown; in this embodiment, after step S1 is completed, the two side positioning members 30 and the first positioning member 10 are arranged horizontally.

[0060] S2, the positioning mechanism is detachably arranged between the two side positioning members 30, and then the steel pipe 91 and the flat steel 92 are assembled on the first positioning member 10, such as Figure 13-14 As shown; in this embodiment, after step S2 is completed, the positioning block 40 and the part to be welded 90 are arranged horizontally. The bottom of the positioning block 40 is flush with the two side positioning members 30. The staff first places the steel pipe 91 in the positioning groove, and one end of the steel pipe 91 is installed on the corresponding joint 14; then the flat steel 92 is placed on the positioning plane. Among them, the flat steel 92 arranged between the two steel pipes 91, the side walls of the two steel pipes 91 limit the two sides of the flat steel 92. The flat steel 92 arranged between the steel pipe 91 and the square steel 31, the side walls of the steel pipe 91 and the square steel 31 limit the two sides of the flat steel 92.

[0061] S3, assemble the second positioning member 20 at the other end of the two side positioning members 30, so that the clamping mechanism can effectively fix the steel pipe 91 and the flat steel 92, such as Fig.15 As shown; S4, spot welding is performed on the joint between the steel pipe 91 and the flat steel 92; wherein, during the spot welding process, the welded part 90 is horizontally arranged. In this embodiment, the welded part 90 has a first surface and a second surface arranged opposite to each other. In step S4, the first surface of the welded part 90 cooperates with the positioning mechanism, and the staff only needs to spot weld the second surface of the welded part 90.

[0062] S5, remove the positioning mechanism from the clamping mechanism, and detachably insert the clamping mechanism into the welding mechanism, such as Fig.16 As shown; in this embodiment, after step S5 is completed, the base 50 is horizontally arranged and the clamping mechanism is vertically arranged so that the welded part 90 is vertically arranged. At this time, the first cooling pipe 11 is arranged in the middle of the first body 12 of the first positioning body. The second cooling pipe 21 is arranged in the middle of the first body 12 of the second positioning body.

[0063] S6. The control mechanism controls the welding mechanism to weld the joint between the steel pipe 91 and the flat steel 92, and controls the flow rate of the cooling medium in the first cooling channel so that the temperature of the cooling medium in the second cooling channel is less than the threshold value; at the same time, during the welding process, when the flow rate of the cooling medium in the first cooling channel remains unchanged, and when the steel pipe 91 is determined to be leaking according to the pressure change in the steel pipe 91, the control mechanism controls the welding mechanism to stop running and controls the early warning mechanism to issue an early warning. During welding, the cooling medium is continuously injected into the inner cavity of the first positioning body by the first cooling pipe 11, and flows through the inner cavity of the first positioning body to the joint 14 of the first positioning body, the steel pipe 91, the joint 14 of the second positioning body, and the inner cavity of the second positioning body in sequence, and finally discharged from the second cooling pipe 21. During the welding process, the cooling medium effectively cools the workpiece 90 to be welded.

[0064] In this embodiment, in step S6, the two welding robots 70 weld the first surface and the second surface of the workpiece 90 to be welded simultaneously. Fig.18 The two welding robots 70 then weld the two sides of the joints at the positions a-1, a-4, a-5, a-8, a-9, a-12, a-13 and a-16 in sequence. Fig.18 The above welding sequence can effectively reduce the deformation of the welded parts 90 and improve the quality of the tube panel.

[0065] This embodiment achieves effective fixation of the weld 90 to be welded and prevents the tube panel from twisting and bending through the cooperation of the clamping mechanism, the positioning mechanism, the welding mechanism, the detection mechanism, the early warning mechanism and the control mechanism; effectively cools the weld 90 to be welded and performs effective leak detection on the steel pipe 91 of the weld 90 to be welded during welding, thereby improving the quality of the tube panel.

[0066] Example 2 The difference between Example 1 and Example 2 is that in Example 2, please refer to Fig.17 As shown, the clamping mechanism is suitable for being arranged vertically relative to the base 50 during the welding process. The welding mechanism also includes a lifting device 80. The lifting device 80 is arranged at one end of the base 50. The lifting device 80 is suitable for adjusting the height of one end of the base 50 so that the base 50 is arranged tilted. The outlet end of the second cooling channel is arranged upward.

[0067] Specifically, the base 50 includes a bottom plate and a hinge seat 51. One end of the bottom plate is hinged to the hinge seat 51, and the other end of the bottom plate is hinged to a lifting device 80. The lifting device 80 drives the other end of the bottom plate to lift and lower, so that the bottom plate is arranged in an inclined manner.

[0068] In this embodiment, after step S5 is completed, the base 50 is tilted, and the clamping mechanism and the base 50 are relatively vertically arranged, so that the welded part 90 is tilted. The staff can adjust the tilt angle of the base 50 according to the needs. In this embodiment, the angle between the base 50 and the horizontal plane is 3° to 10°.

[0069] In this embodiment, in step S6, the first cooling pipe 11 is arranged in the upper middle part of the first main body 12 of the first positioning body, and the inlet end of the first cooling pipe 11 is arranged upward. The second cooling pipe 21 is arranged in the upper middle part of the first main body 12 of the second positioning body, and the outlet end of the second cooling pipe 21 is arranged upward.

[0070] In this embodiment, the positions of the first cooling tube 11 and the second cooling tube 21 are conducive to the cooling medium being filled into all the steel tubes 91 in the clamping mechanism, so that the welded parts 90 can be fully cooled.

[0071] In this embodiment, the inclination angle of the workpiece 90 to be welded is adjusted so that the tube panel welding device can effectively weld the workpiece 90 to be welded, thereby obtaining a tube panel with better quality.

[0072] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A tube panel welding device, suitable for welding the joints of a to-be-welded part (90), wherein the to-be-welded part (90) comprises a plurality of steel tubes (91) and a plurality of flat steels (92), wherein the plurality of steel tubes (91) are arranged in parallel and spaced apart, and the flat steels (92) are arranged between adjacent steel tubes (91), characterized in that: The tube panel welding device comprises: a clamping mechanism, a positioning mechanism, a welding mechanism, a detection mechanism, an early warning mechanism and a control mechanism; The clamping mechanism is detachably inserted into the welding mechanism, and comprises: a first positioning member (10), a second positioning member (20) and two side positioning members (30); the first positioning member (10) and the second positioning member (20) are distributed at two ends of the workpiece (90) to be welded, the first positioning member (10) is provided with a first cooling channel, and the first cooling channel is suitable for receiving a cooling medium during the welding process; the second positioning member (20) is provided with a second cooling channel, and the second cooling channel is suitable for discharging a cooling medium during the welding process; The first positioning member (10) and the second positioning member (20) are respectively suitable for fixing the two ends of the steel pipe (91), and at the same time, the first cooling channel is connected to the second cooling channel through the steel pipe (91); the two side positioning members (30) are distributed on both sides of the workpiece (90) to be welded, and the two ends of the side positioning members (30) are respectively detachably connected to the first positioning member (10) and the second positioning member (20), and the two side positioning members (30) are suitable for fixing the two sides of the workpiece (90) to be welded during the welding process; The positioning mechanism is detachably arranged between the two side positioning members (30), and the positioning mechanism is suitable for limiting and supporting the root steel pipe (91) and the root flat steel (92) during the welding process; The detection mechanism is suitable for detecting the pressure inside the steel pipe (91), the flow rate of the cooling medium in the first cooling channel, and the temperature of the cooling medium in the second cooling channel during the welding process; The control mechanism is suitable for controlling the welding mechanism to weld the seam of the workpiece (90) to be welded, and controlling the flow rate of the cooling medium in the first cooling channel so that the temperature of the cooling medium in the second cooling channel is less than a threshold value; the control mechanism is also suitable for controlling the welding mechanism to stop operating and controlling the early warning mechanism to issue an early warning when the flow rate of the cooling medium in the first cooling channel remains unchanged during the welding process and when it is determined that the steel pipe (91) is leaking according to the pressure change in the steel pipe (91).

2. The tube panel welding device according to claim 1, characterized in that: The first positioning member (10) comprises: a first positioning body and a first cooling pipe (11); The first positioning body comprises: a first body (12), a tightening bolt (13) and a plurality of joints (14); Two installation channels (121) are arranged at intervals on the first body (12), and the two installation channels (121) are respectively suitable for slidably inserting one end of the two side positioning members (30); a cavity is arranged in the first body (12), and the cavity is located between the two installation channels (121) and is not in communication with the installation channels (121); The retaining bolt (13) is threadedly connected to the first body (12), and the retaining bolt (13) extends along a first direction and extends into the installation channel (121); the retaining bolt (13) is suitable for retaining against a side wall of the side positioning member (30) during welding, so that the side positioning member (30) is fixed in the installation channel (121); The first cooling pipe (11) is arranged on the first main body (12), and the first cooling pipe (11) is connected to the cavity; A plurality of joints (14) are arranged at intervals on the first main body (12), the joints (14) being in communication with the cavity, and the joints (14) being suitable for being detachably connected to the inner hole of the steel pipe (91) during welding; The first cooling channel comprises the first cooling pipe (11), the cavity and the joint (14); The second positioning member (20) comprises: a second positioning body and a second cooling pipe (21); The second positioning body has the same structure as the first positioning body; the second cooling pipe (21) is arranged on the first body (12) of the second positioning body, and the second cooling pipe (21) is connected to the cavity of the second positioning body; The second cooling channel comprises the second cooling pipe (21), a cavity of the second positioning body and a joint (14) of the second positioning body.

3. The tube panel welding device according to claim 2, characterized in that: The outside of the joint (14) is equipped with a rubber ring (141), and the joint (14) is suitable for being detachably connected to the inner hole of the steel pipe (91) via the rubber ring (141) during welding.

4. The tube panel welding device according to claim 2, characterized in that: The detection mechanism includes a flow meter, a thermometer and a pressure sensor; The flow meter is arranged at the inlet end of the first cooling tube (11), and the flow meter is suitable for detecting the flow rate of the cooling medium in the first cooling tube (11) during the welding process; The thermometer is arranged at the outlet end of the second cooling tube (21), and the thermometer is suitable for detecting the temperature of the cooling medium in the second cooling tube (21) during the welding process; The pressure sensor is arranged on the joint (14) of the second positioning body, and the pressure sensor is suitable for detecting the pressure inside the steel pipe (91) during the welding process.

5. The tube panel welding device according to claim 1, characterized in that: The side positioning member (30) comprises: a square steel (31) and a reinforcing plate (32); Two ends of the square steel (31) are detachably connected to the first positioning member (10) and the second positioning member (20), respectively; one side of the square steel (31) is suitable for abutting against one side of the workpiece (90) to be welded during welding; The reinforcing plate (32) is arranged on the other side of the square steel (31), and two ends of the reinforcing plate (32) are suitable for respectively pressing against the first positioning member (10) and the second positioning member (20) during the welding process.

6. The tube panel welding device according to claim 1, characterized in that: The positioning mechanism comprises: a positioning block (40); The positioning block (40) is detachably arranged between the two side positioning members (30); a positioning groove and a positioning plane are provided on one side of the positioning block (40), and the other side of the positioning block (40) is flush with the side positioning member (30); The positioning groove is suitable for limiting the side wall of the steel pipe (91) during the welding process, and the positioning plane is suitable for supporting the flat steel (92) during the welding process.

7. The tube panel welding device according to claim 1, characterized in that: The welding mechanism comprises: a base (50), a driving module (60) and a welding robot (70); The base (50) is provided with a slot, and the slot is suitable for being detachably connected to the clamping mechanism during the welding process; The driving module (60) is arranged on the base (50), and the welding robot (70) is assembled on the driving module (60). The driving module (60) is suitable for driving the welding robot (70) to move during the welding process.

8. The tube panel welding device according to claim 7, characterized in that: The clamping mechanism is suitable for being arranged vertically relative to the base (50) during the welding process, and the welding mechanism further comprises: a lifting device (80); The lifting device (80) is arranged at one end of the base (50), and the lifting device (80) is suitable for adjusting the height of one end of the base (50) so that the base (50) is inclined; The outlet end of the second cooling channel is arranged upward.

9. The tube panel welding device according to claim 1, characterized in that: The control mechanism includes: a regulating valve and a controller; The regulating valve is arranged at the inlet end of the first cooling channel; The controller is suitable for controlling the welding mechanism to weld the seam of the welded part (90), and controlling the regulating valve to regulate the flow rate of the cooling medium in the first cooling channel so that the temperature of the cooling medium in the second cooling channel is less than a threshold value; the controller is also suitable for controlling the welding mechanism to stop operating and controlling the early warning mechanism to issue an early warning when the regulating valve does not regulate the flow rate of the cooling medium in the first cooling channel and the steel pipe (91) is determined to be leaking according to the pressure change in the steel pipe (91) during the welding process.

10. A welding method using the tube panel welding device according to any one of claims 1 to 9, characterized in that: The specific steps include: S1, assembling one end of the two side positioning members (30) on the first positioning member (10); S2, detachably disposing the positioning mechanism between the two side positioning members (30), and then assembling the steel pipe (91) and the flat steel (92) on the first positioning member (10); S3, assembling the second positioning member (20) at the other ends of the two side positioning members (30) so that the clamping mechanism can effectively fix the steel pipe (91) and the flat steel (92); S4, spot welding the joint between the steel pipe (91) and the flat steel (92); S5, removing the positioning mechanism from the clamping mechanism, and detachably inserting the clamping mechanism into the welding mechanism; S6. The control mechanism controls the welding mechanism to weld the joint between the steel pipe (91) and the flat steel (92), and controls the flow rate of the cooling medium in the first cooling channel so that the temperature of the cooling medium in the second cooling channel is less than a threshold value; at the same time, during the welding process, when the flow rate of the cooling medium in the first cooling channel remains unchanged and the steel pipe (91) is determined to be leaking based on the pressure change in the steel pipe (91), the control mechanism controls the welding mechanism to stop operating and controls the warning mechanism to issue a warning.

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