A brazing device for a core detector assembly

Abstract

The present invention relates to the technical field of welding, and particularly to a brazing device for a core detector assembly. The device includes: a welding positioning assembly and an inductor are oppositely arranged on a working platform; the inductor is fixed on the working platform through a guide rail; a rotating structure is arranged at one end of the inductor, and an induction coil is arranged at the movable end of the rotating structure; a water inlet pipe and a water outlet pipe are arranged inside the inductor, and the water inlet pipe and the water outlet pipe are respectively connected to a water cooling assembly; the welding positioning assembly includes a protective cover and a robotic arm; the upper part of the side wall of the protective cover has an air inlet, the lower part of the side wall has an air outlet, and a temperature measuring probe is arranged at the top; an opening consistent with the shape of the induction coil is arranged on the side wall of the protective cover for clamping the induction coil; an inert gas supply unit is connected to the air inlet; the power supply is respectively connected to the inductor, the water cooling assembly and the temperature measuring probe. The present invention has universality in the brazing occasion of the core detector and can improve the welding efficiency and the welding effect.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and in particular, to a brazing device for a core detector assembly. Background Art

[0002] In the design of the core detector assembly, there are induction brazing processes with various structural forms on the detector assembly, and the specifications of the induction generators (coils), brazing solders, and atmospheres used are all different. In the prior art, when brazing the core detector, the versatility of the induction brazing device is poor. The detector adopts a temporary clamping method, and manual position correction is required. During the welding process, the components of the detector may shift, affecting the welding effect, and the welding efficiency is also low.

[0003] In addition, in the design of the detector assembly, in order to prevent coolant from leaking from the inside of the assembly to the outside of the pressure vessel when the outer shell of the detector assembly extending into the pressure vessel ruptures, an internal sealing structure is designed inside the assembly. This structure needs to be able to withstand the design pressure and temperature of the reactor coolant. Currently, this internal sealing structure uses a brazing process. Since the silver-copper brazing solder is used with a flux added for welding, there is no inert gas atmosphere protection during the welding process, so there is varying degrees of oxidation on the surfaces of the structural parts and components after welding. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a brazing device for a core detector assembly, which has versatility in the brazing occasion of the core detector, can improve the welding efficiency, and improve the welding effect.

[0005] The present invention provides a brazing device for a core detector assembly, including: a power supply, an inert gas supply unit, a water cooling component, a working platform, a welding positioning component, and an inductor;

[0006] The welding positioning component and the inductor are oppositely arranged on the working platform;

[0007] The inductor is fixed to the working platform through a guide rail;

[0008] One end of the inductor is provided with a rotating structure, and an induction coil is arranged at the movable end of the rotating structure;

[0009] A water inlet pipe and a water outlet pipe are arranged inside the inductor, and the water inlet pipe and the water outlet pipe are respectively connected to the water cooling component;

[0010] The welding positioning component includes a protective cover and a robotic arm;

[0011] The upper part of the side wall of the protective cover has an air inlet, the lower part of the side wall has an air outlet, and a temperature measuring probe is arranged at the top;

[0012] An opening identical in shape to the rotating structure is provided on the side wall of the protective cover for clamping the rotating structure;

[0013] The inert gas supply unit is connected to the air inlet of the protective cover;

[0014] The power supply is respectively connected to the inductor, the water cooling component and the temperature measuring probe.

[0015] Preferably, the guide rail is connected to the working platform through a turntable.

[0016] Preferably, a fixed claw is provided at the movable end of the robotic arm, and there are at least two robotic arms.

[0017] Preferably, the welding positioning assembly includes two robotic arms, and the two robotic arms are fixed to the working platform through two positioning holes.

[0018] Preferably, an opening is further provided on the working platform, and the opening is located between the two positioning holes.

[0019] Preferably, the protective cover is a ceramic structure with an observation window.

[0020] Preferably, the water inlet pipe and the water outlet pipe enter the inductor through a guide pipe inside the working platform;

[0021] The power supply is connected to the inductor through a cable, and the cable enters the inductor through a guide pipe inside the working platform.

[0022] Preferably, the welding positioning assembly further includes a fixing block, and the fixing block is clamped with the protective cover;

[0023] The fixing block includes two semi-circular components for fixing the workpiece to be welded.

[0024] Preferably, the protective cover is formed by splicing two semi-cylinders, and each semi-cylinder has a groove on one side for clamping the induction coil.

[0025] Preferably, universal wheels are provided at the bottom of the working platform.

[0026] Compared with the prior art, the brazing device for the core detector assembly of the present invention can keep the components horizontal or vertical during welding by adding a welding positioning assembly. The fixed block structure of the positioning system can be adapted to the welding of components with different structures, improving the versatility of the induction brazing device; moreover, the protective cover of the induction brazing device can increase the welding safety; the gas protection system can improve the welding appearance and protect the surface of the components from oxidation; the temperature measuring probe makes the welding process controllable and protects important components from the risk of damage. Description of the Drawings

[0027] Figure 1 Schematic structural diagram of the brazing device for the core detector assembly of the present invention;

[0028] Figure 2 Top view of the working platform in the induction brazing device;

[0029] Figure 3 and 4 Schematic diagram of the welding positioning system in the induction brazing device;

[0030] Figure 5 Front schematic diagram of the inductor in the induction brazing device;

[0031] Figure 6 Side schematic diagram of the inductor in the induction brazing device;

[0032] Explanation of reference numerals in the drawings:

[0033] 1 - Power supply; 2 - Inert gas supply unit; 3 - Water cooling component; 4 - Working platform; 41 - Guide tube; 42 - Guide rail; 43 - Turntable; 44 - Positioning hole; 45 - Opening; 5 - Welding positioning component; 51 - Robot arm; 52 - Fixed claw; 53 - Protective cover; 54 - Air inlet; 55 - Fixed block; 56 - Workpiece to be welded; 57 - Temperature measurement probe; 58 - Observation window; 59 - Air outlet; 6 - Inductor; 61 - Rotating structure; 62 - Induction coil. Detailed implementation manners

[0034] To further understand the present invention, the implementation schemes of the present invention will be described below in conjunction with embodiments. However, it should be understood that these descriptions are only for further explaining the features and advantages of the present invention, rather than limiting the present invention.

[0035] An embodiment of the present invention discloses a brazing device for a core detector assembly, as Figure 1 shown, including: a power supply 1, an inert gas supply unit 2, a water cooling component 3, a working platform 4, a welding positioning component 5 and an inductor 6;

[0036] The welding positioning component 5 and the inductor 6 are oppositely arranged on the working platform 4;

[0037] The inductor 6 is fixed on the working platform 4 through the guide rail 42;

[0038] One end of the inductor 6 is provided with a rotating structure 61, and the movable end of the rotating structure 61 is provided with an induction coil 62;

[0039] The inductor 6 is internally provided with a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are respectively connected to the water cooling component 3;

[0040] The welding positioning assembly 5 includes a protective cover 53 and a robotic arm 51;

[0041] The upper part of the side wall of the protective cover 53 has an air inlet 54, the lower part of the side wall has an air outlet 59, and a temperature measuring probe 57 is arranged at the top;

[0042] An opening having the same shape as the induction coil 62 is arranged on the side wall of the protective cover 53 for clamping the induction coil 62;

[0043] The inert gas supply unit 2 is connected to the air inlet 54 of the protective cover 53;

[0044] The power supply 1 is respectively connected to the inductor 6, the water cooling component 3 and the temperature measuring probe 57.

[0045] By adding a welding positioning assembly, the present invention can keep the components horizontal or vertical during welding. The positioning system is provided with a fixed block structure that can be adapted to the welding of different structural components, improving the versatility of the induction brazing device; moreover, the protective cover of the induction brazing device can increase the welding safety; the gas protection system can improve the welding appearance and protect the surface of the components from oxidation; the temperature measuring probe enables the welding process to be controllable and protects important components from the risk of damage.

[0046] The following is a detailed description of each component, specifically referring to Figures 2 to 6 as shown.

[0047] The power supply 1, preferably a high-frequency power supply, is used to supply power to the inductor 6 and the temperature measuring probe 57. The power supply 1 is connected to the inductor 6 and the temperature measuring probe 57 through a cable. The power supply 1 is connected to the water cooling component 3 through a water pipe, and the water cooling component 3 is used to reduce the temperature of the power supply 1.

[0048] The power supply 1 is used to generate an alternating current with a suitable frequency and transmit it to the inductor 6. The power supply 1 can store different welding parameter groups, adapt to the welding of different welding workpieces, and has a timing function. It can be connected to a remote control switch or a foot switch.

[0049] The inert gas supply unit 2 is connected to the air inlet 54 on the protective cover 53; the inert gas supply unit 2 is used to provide inert gas protection to the inside of the protective cover 53. Preferably, by adjusting the flow meter, a certain flow rate of protective gas is transported to the protective cover 53, and the air inside the protective cover 53 can be discharged through the exhaust port 59 to avoid the oxidation phenomenon on the surface of the welding workpiece 56; the inert gas supply unit 2 is preferably an argon gas cylinder.

[0050] The water cooling component 3 operates throughout the welding process and is used to cool the power supply 1 and the induction coil 62 to ensure the normal operation of the system and avoid the danger of overheating and melting the induction coil.

[0051] The welding positioning assembly 5 and the inductor 6 are oppositely arranged on the working platform 4;

[0052] Preferably, the working platform 4 is equipped with universal wheels, so it can be conveniently moved to meet the temporary moving requirements;

[0053] Preferably, an opening 45 is also provided on the working platform 4 to meet the welding requirements of slender workpieces that cannot be directly placed on the platform and must be welded vertically.

[0054] The inductor 6 is fixed to the working platform 4 through a guide rail 42. Preferably, the guide rail 42 is connected to the working platform 4 through a turntable 43. The guide rail 42 on the working platform 4 can rotate horizontally with the turntable 43, and the inductor 6 can move on the guide rail 42, so that the position of the induction coil 62 can be adjusted according to the actual welding situation.

[0055] One end of the inductor 6 is provided with a rotating structure 61, and the movable end of the rotating structure 61 is provided with an induction coil 62; the rotating structure 61 enables the induction coil to rotate, meeting the horizontal and vertical welding requirements without disassembling the induction coil 62.

[0056] The inductor 6 is internally provided with a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are respectively connected to the water cooling assembly 3; preferably, the water inlet pipe and the water outlet pipe enter the inductor 6 through a guide pipe 41 inside the working platform; the power supply 1 is connected to the inductor 6 through a cable, and the cable enters the inductor 6 through the guide pipe 41 inside the working platform 4.

[0057] The welding positioning assembly 5 can fix the detector components, including a protective cover 53 and a robotic arm 51; the robotic arm 51 can horizontally or vertically fix and weld the detector components.

[0058] Preferably, the movable end of the robotic arm 51 is provided with a fixing claw 52, and there are at least 2 robotic arms. The fixing claw 52 on the robotic arm 51 can move up and down, back and forth, and left and right, and the horizontal or vertical fixation of the workpiece 56 to be welded can be achieved through the fixing claw 52.

[0059] Preferably, the welding positioning assembly includes 2 robotic arms, and the two robotic arms are fixed to the working platform 4 through two positioning holes 44.

[0060] Preferably, the opening 45 provided on the working platform 4 is located between the two positioning holes 44.

[0061] The protective cover 53 is used to provide a closed environment for welding operations under the protection of inert gas, greatly improving the oxidation phenomenon of components near the welding position and facilitating post-weld cleaning. Moreover, by setting the protective cover 53, the welded parts can be separated from the operator, effectively protecting the safety of personnel.

[0062] The upper part of the side wall of the protective cover 53 is provided with an air inlet 54, the lower part of the side wall is provided with an air outlet 59, and a temperature measuring probe 57 is arranged at the top. The temperature measuring probe 57 is connected to the power supply 1 through a signal cable.

[0063] By setting the temperature measuring probe 57, the welding temperature can be controlled to prevent overheating of components and effectively protect important components. The probe of the temperature measuring probe 57 can be finely adjusted in direction so that it can always be aligned with the weld position of the workpiece 56 to be welded. The temperature measuring probe 57 is preferably an infrared temperature measuring probe.

[0064] An opening having the same shape as the induction coil 62 is provided on the side wall of the protective cover 53 for clamping the induction coil 62.

[0065] Preferably, the protective cover 53 is formed by splicing two half cylinders. Each half cylinder has a groove on one side edge, and the two grooves are spliced to clamp the induction coil 62.

[0066] Preferably, the welding positioning assembly further includes a fixing block 55, and the fixing block 55 is clamped with the protective cover 53.

[0067] The shape of the fixing block 55 can be adjusted accordingly according to the structure of the workpiece to be welded, and a tight fit can be achieved by replacing the matching fixing block 55. Preferably, the fixing block 55 includes two semi-circular components, which are detachable and used to fix the workpiece 56 to be welded.

[0068] Preferably, the welding positioning assembly further includes a fixing block 55, and the fixing block 55 is clamped with the protective cover 53.

[0069] Preferably, the protective cover 53 is a ceramic structure with an observation window 58, which is convenient for observing the welding process.

[0070] When the induction brazing device of the present invention is in use, first, the workpiece 56 to be welded is assembled, the brazing filler metal is pre-placed, and whether to add a flux is selected according to the welding process requirements. Fixing blocks 55 are installed at both ends of the workpiece 56 to be welded, and the workpiece 56 to be welded is placed into the induction coil 62. Then, the protective cover 53 is buckled and fixed horizontally or vertically through the fixing claws 52. When changing the fixing direction, note that the rotating structure 61 on the inductor 6 can rotate the induction coil 62. Secondly, the argon gas cylinder is opened to deliver argon gas into the protective cover 53. Then, the water cooling unit 3 and the power supply 1 are turned on, and the welding parameters are set. Finally, the operation button on the power supply 1 is pressed to start the welding. The power supply 1 generates an alternating current with a suitable frequency and transmits it to the inductor 6. The induction coil 62 generates an induced electromagnetic field, and an induced electromotive force is coupled and generated on the surface of the workpiece 56 to be welded, forming an induced eddy current on the metal surface. The workpiece 56 to be welded is heated by the eddy current generated on the metal surface. When the joint position of the pre-placed brazing filler metal on the workpiece 56 to be welded reaches the melting temperature of the brazing filler metal, the brazing filler metal fills the gap and enters the weld. The welding process is observed through the observation window 58, and the temperature measuring probe 57 monitors the welding temperature in real time and feeds it back to the high-frequency power supply for display. After the brazing filler metal is completely melted, the welding is completed.

[0071] Through the above embodiments, the induction brazing device of the present invention can meet the welding requirements of workpieces with different structures in the manufacturing process of the detector assembly, improve the welding efficiency, and improve the welding effect. At the same time, the content of the present invention is not limited to the implementation of brazing welding of the detector assembly. By replacing the induction coil and other means, the welding of other ordinary components can also be realized.

[0072] The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0073] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A brazing device for a core detector assembly, characterized in that, Comprising: A power supply, an inert gas supply unit, a water cooling component, a working platform, a welding positioning component and an inductor; The welding positioning component and the inductor are oppositely arranged on the working platform; The inductor is fixed to the working platform through a guide rail; One end of the inductor is provided with a rotating structure, and an induction coil is arranged at the movable end of the rotating structure; A water inlet pipe and a water outlet pipe are arranged inside the inductor, and the water inlet pipe and the water outlet pipe are respectively connected to the water cooling component; The welding positioning component includes a protective cover and a robotic arm; The upper part of the side wall of the protective cover has an air inlet, the lower part of the side wall has an air outlet, and a temperature measuring probe is arranged at the top; An opening having the same shape as the induction coil is arranged on the side wall of the protective cover for clamping the induction coil; The inert gas supply unit is connected to the air inlet of the protective cover; The power supply is respectively connected to the inductor, the water cooling component and the temperature measuring probe; The water inlet pipe and the water outlet pipe enter the inductor through a guide pipe inside the working platform; The power supply and the inductor are connected by a cable, and the cable enters the inductor through a guide pipe inside the working platform; The welding positioning component further includes a fixing block, and the fixing block is clamped with the protective cover; The fixing block includes two semi-circular components for fixing the workpiece to be welded.

2. The brazing device for the core detector assembly according to claim 1, wherein The guide rail is connected to the working platform through a turntable.

3. The brazing device for the core detector assembly according to claim 2, characterized in that, A fixing claw is arranged at the movable end of the robotic arm, and there are at least 2 robotic arms.

4. The brazing device for the core detector assembly according to claim 3, characterized in that, The welding positioning component includes 2 robotic arms, and the two robotic arms are fixed to the working platform through two positioning holes.

5. The brazing device for the core detector assembly according to claim 4, characterized in that, An opening is further arranged on the working platform, and the opening is located between the two positioning holes.

6. The brazing device for the core detector assembly according to claim 1, characterized in that, The protective cover is a ceramic structure with an observation window.

7. The brazing device for the core detector assembly according to claim 1, characterized in that, The protective cover is formed by splicing two semi-cylinders, and each semi-cylinder has a groove on one side edge for clamping the induction coil.

8. The brazing device for the core detector assembly according to claim 1, characterized in that, Universal wheels are arranged at the bottom of the working platform.

Images