Induction heating brazing device for stator copper bar of hydro-generator

Abstract

The utility model discloses a hydro-generator stator copper bar induction heating brazing device which comprises an induction heater, the end portion of the induction heater close to a coil is provided with a fixing arm and a jacking assembly, the end portion of the fixing arm is provided with a positioning baffle abutting against the side face of a terminal, the jacking assembly comprises a lead screw, and the lead screw is fixedly connected with the induction heater. A rod body of the lead screw is sleeved with a pressing plate, the rod body of the lead screw is in threaded connection with a nut, and the nut enables the pressing plate to abut against the other side face of the terminal. According to the utility model, one side surface of the terminal is positioned through the fixing arm, and the pressing plate is moved by rotating the nut, so that the pressing plate abuts against the other side surface of the terminal, and therefore, the induction heater can be fixed on the terminal, and the defects of the traditional manual operation of holding the induction heater by hand can be solved; in addition, the copper bars at the upper ends of the terminals are positioned through the positioning assemblies, it is ensured that the copper bars and the terminals are in an up-and-down corresponding state all the time, dislocation of the copper bars during welding is avoided, welding quality and precision are ensured, and the use effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to induction heating equipment technical field, concretely is a kind of water turbine generator stator copper bar induction heating brazing device. BACKGROUND

[0002] Induction brazing is that the metal workpiece (generally mostly purple copper) needing to be welded is placed in induction coil, high-frequency alternating current is passed, induction electromagnetic field is generated, induction electromotive force is generated in the coupling of workpiece surface, induction eddy current is formed on metal surface, rely on the eddy current generated on metal surface to heat, generally, weld powder is applied on the welding position, and welding can be carried out when the workpiece reaches the brazing filler metal melting temperature.

[0003] When the terminal on the water turbine generator stator and copper bar are welded, induction brazing technology needs to be used, generally, the operator holds induction heater to be sleeved on the outside of terminal and copper bar to carry out heating brazing, need to ensure that induction coil does not accidentally touch copper bar when holding, long time holding needs to concentrate attention and is more tiring, in addition, the operator is close to brazing place, high temperature and smoke generated by welding damage the operator, and need to be improved. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art, provide a water turbine generator stator copper bar induction heating brazing device, which can fix the induction heater on the terminal, solve the drawbacks of traditional manual holding of the induction heater, effectively avoid misplacement when copper bar is welded, ensure welding quality and precision, have good use effect, and can effectively solve the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a water turbine generator stator copper bar induction heating brazing device, which comprises an induction heater, a fixing arm and a clamping assembly are arranged on the end of the induction heater close to the coil, the fixing arm has a positioning baffle at the end, which abuts against the side surface of the terminal, the clamping assembly comprises a lead screw, the lead screw is fixedly connected with the induction heater, a pressing plate is sleeved on the rod body of the lead screw, a nut is threadedly connected with the rod body of the lead screw, and the pressing plate abuts against the other side surface of the terminal through the nut.

[0006] Preferably, the fixing arm is provided with a connecting plate, the connecting plate is connected with a positioning assembly for positioning the copper bar, the positioning assembly comprises a rectangular frame, four side plates of the rectangular frame are all threadedly connected with adjusting bolts, and one end of the adjusting bolt extends into the rectangular frame and abuts against the copper bar.

[0007] Preferably, the connecting plate is connected with the positioning assembly through a connecting piece, the connecting piece comprises a connecting frame, the connecting frame is movably sleeved outside the connecting plate and connected with the connecting plate through locking bolts, and the connecting frame is connected with the rectangular frame through a fixing plate.

[0008] Preferably, the pressing plate is provided with a long slot in the length direction, and the lead screw passes through the long slot.

[0009] Preferably, the fixed arm has a gap with the end of the pressing plate.

[0010] Preferably, the fixed arm and the pressing plate are both ceramic heat insulation plates.

[0011] Compared with the prior art, the utility model has the advantages that: through the fixed arm positioning one side of the terminal, then through the rotating nut to move the pressing plate, make the pressing plate and the other side of the terminal resist, so as to be able to fix the induction heater on the terminal, solved the traditional manual induction heater operation's malpractice, in addition through the positioning assembly to position the copper bar on the upper end of the terminal, ensure that the copper bar and the terminal are always in the state of up and down correspondence, avoid the copper bar welding when misplacement, ensure the welding quality and precision, use effectual. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is the structure schematic diagram of the utility model;

[0013] Fig. 2 It is the local structure schematic diagram of the utility model;

[0014] Fig. 3 It is the fixed arm and the top tight component plan view of the utility model.

[0015] In the drawing: 1 induction heater, 2 connecting plate, 3 fixed arm, 3.1 positioning baffle, 4 positioning assembly, 4.1 rectangular frame, 4.2 adjusting bolt, 5 connecting piece, 5.1 connecting frame, 5.2 fixed plate, 6 top tight component, 6.1 screw rod, 6.2 nut, 6.3 pressing plate. DETAILED DESCRIPTION

[0016] The utility model can be explained in detail through the following embodiments, the purpose of the utility model is disclosed to protect all technical improvements in the range of the utility model, in the description of the utility model, it is understood that if there are terms "upper", "lower", "front", "rear", "left", "right" and so on indicate the orientation or position relationship, only corresponds to the drawing of the application, in order to facilitate the description of the utility model, and not indicate or imply that the device or element must have a particular orientation.

[0017] Please refer to Figs. 1-3 The utility model provides a kind of technical scheme: a water turbine generator stator copper bar induction heating brazing device, including induction heater 1, the end of induction heater 1 is close to coil and is equipped with fixed arm 3 and top tight component 6, fixed arm 3 end has the positioning baffle 3.1 with terminal side surface resistance, top tight component 6 includes screw rod 6.1, screw rod 6.1 is fixedly connected with induction heater 1, the stem of screw rod 6.1 is sleeved with pressing plate 6.3, the stem of screw rod 6.1 is connected with nut 6.2 by screw thread, nut 6.2 makes pressing plate 6.3 and another side surface of terminal resistance.

[0018] The positioning baffle 3.1 at the end of the fixed arm 3 is in contact with one side of the terminal, and then the nut 6.2 is rotated, the pressing plate 6.3 is pushed and moved by the nut 6.2, the pressing plate 6.3 is in contact with the other side of the terminal, so that a clamp structure is formed to clamp the terminal, the induction heater 1 can be fixed on the terminal, and the operator does not need to hold the induction heater 1, so that the defects of the traditional manual operation of the induction heater 1 are solved, and the welding quality is improved;

[0019] Further, the fixed arm 3 is provided with a connecting plate 2, the connecting plate 2 is connected with a positioning assembly 4 for positioning the copper bar, the positioning assembly 4 comprises a rectangular frame 4.1, four side plates of the rectangular frame 4.1 are all threadedly connected with adjusting bolts 4.2, one end of the adjusting bolt 4.2 extends into the rectangular frame 4.1 and is in contact with the copper bar; the copper bar at the upper end of the terminal is positioned by the positioning assembly 4, that is, the position of the copper bar is adjusted by rotating the four adjusting bolts 4.2, so that the copper bar and the terminal are in a corresponding state, and then the welding quality is ensured, and the problem that the traditional manual operation of the induction heater 1 may accidentally touch the copper bar and cause misplacement to affect the welding quality is solved;

[0020] It should be noted that the connecting plate 2 is connected with the positioning assembly 4 through a connecting piece 5, the connecting piece 5 comprises a connecting frame 5.1, the connecting frame 5.1 is movably sleeved outside the connecting plate 2 and connected with the connecting plate 2 through locking bolts, the connecting frame 5.1 is connected with the rectangular frame 4.1 through a fixing plate 5.2, and the height of the connecting frame 5.1 can be adjusted by loosening the locking bolts, so that the height of the positioning assembly 4 is adjusted, and the copper bar can be adjusted flexibly and conveniently;

[0021] Further, the pressing plate 6.3 is provided with a long slot in the length direction, and the lead screw 6.1 penetrates through the long slot, and the position of the pressing plate 6.3 can be adjusted according to actual needs;

[0022] In addition, the fixed arm 3 and the end of the pressing plate 6.3 have a gap; the fixed arm 3 and the pressing plate 6.3 are all ceramic heat insulation plates, when the induction coil of the induction heater 1 heats the connection position of the terminal and the copper bar, heat is transferred to the terminal and the copper bar, and the ceramic heat insulation plates are adopted to reduce heat transfer.

[0023] The part not described in the utility model is the prior art, and for those skilled in the art, obviously, the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, and all changes falling within the meaning and range of equivalent elements are included in the utility model.

Claims

1. A kind of induction heating brazing device of water turbine generator stator copper bar, including induction heater (1), it is characterized in that: The end of the induction heater (1) is close to the coil and is provided with a fixing arm (3) and a pressing assembly (6), the end of the fixing arm (3) is provided with a positioning baffle (3.1) which is in contact with the side of the terminal, the pressing assembly (6) comprises a lead screw (6.1), the lead screw (6.1) is fixedly connected with the induction heater (1), the shank of the lead screw (6.1) is sleeved with a pressing plate (6.3), the shank of the lead screw (6.1) is threadedly connected with a nut (6.2), the nut (6.2) makes the pressing plate (6.3) in contact with the other side of the terminal.

2. The induction heating brazing device for the copper bars of a hydroelectric generator stator according to claim 1, characterized in that: The fixing arm (3) is provided with a connecting plate (2), the connecting plate (2) is connected with a positioning assembly (4) for positioning the copper bar, the positioning assembly (4) comprises a rectangular frame (4.1), four side plates of the rectangular frame (4.1) are threadedly connected with adjusting bolts (4.2), one end of the adjusting bolt (4.2) extends into the rectangular frame (4.1) and is in contact with the copper bar.

3. The induction heating brazing device for the copper bars of a hydroelectric generator stator according to claim 2, characterized in that: The connecting plate (2) is connected with the positioning assembly (4) through a connecting piece (5), the connecting piece (5) comprises a connecting frame (5.1), the connecting frame (5.1) is movably sleeved outside the connecting plate (2) and is connected with the connecting plate (2) through locking bolts, the connecting frame (5.1) is connected with the rectangular frame (4.1) through a fixing plate (5.2).

4. The induction heating brazing device for stator copper bars of a hydroelectric generator according to claim 1, characterized in that: The pressing plate (6.3) is provided with a long slot along the length direction thereof, and the lead screw (6.1) passes through the long slot.

5. The induction heating brazing device for stator copper bars of a hydroelectric generator according to claim 1, characterized in that: The end of the fixing arm (3) and the end of the pressing plate (6.3) have a gap.

6. The induction heating brazing device for stator copper bars of a hydroelectric generator according to claim 1, characterized in that: The fixing arm (3) and the pressing plate (6.3) are both ceramic heat insulation plates.

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