Stator coil branching insulation performance automatic detection device and method

Abstract

The invention discloses a device and a method for automatically detecting the insulation performance of a stator coil branch, relates to the field of insulation detection of stator coils of water and thermal power generators, and aims to solve the problems of manual layering, branching and detection of the insulation performance of the stator coil branch of a generator. The upper layer and the lower layer of the coil are automatically separated through the upper layer air cylinder module and the lower layer air cylinder module, then the branching measuring device conducts automatic branching and insulation detection on each copper wire of each layer of the coil, and whether short circuit is caused by insulation damage points or not is judged. The test difficulty is that a stator coil consists of an upper layer and a lower layer, each layer of coil comprises a plurality of copper wires, layering and branching are difficult to realize automatically, and the reliability of layering and branching directly affects whether a test result is qualified or not. Compared with a manual operation method, automatic layering, branching and detection can be achieved, and the problems of manual operation, low efficiency and the like are solved. The method has the advantages of being easy and convenient to operate, accurate in measurement and high in universality.

Description

Technical Field

[0001] The invention relates to the field of insulation detection of stator coils of water and thermal generators, and in particular to an automatic detection device and method for insulation performance of stator coil branch lines. Background Art

[0002] The stator coil is a key component of the generator stator mechanism. The surface insulation performance of the stator coil directly determines the quality of the generator stator. The stator coil is composed of several copper wires. The stator coil is divided into two layers, the upper layer is composed of several turns of copper wires in one row, and the lower layer is composed of the same number of copper wires in another row. The upper and lower layers are stacked to form a complete stator coil. Each copper wire of the stator coil is plated with an insulation layer. A fixed length of the end of each copper wire is polished to remove the surface insulation layer to expose the copper wire body. After the upper and lower layers of the middle straight section of the stator coil are heated and pressurized to form a whole, the end of the stator coil is free. The insulation performance of the stator coil split line refers to the short-circuit detection between each copper wire at the copper wire body part of the stator coil end where the surface insulation layer has been removed after the insulation curing of the middle straight section of the stator coil is completed, so as to detect whether all the copper wires in the middle straight section of the stator coil are short-circuited due to surface insulation damage, so as to avoid the deterioration of the overall insulation performance of the stator coil due to the damage of the surface insulation of a copper wire. Therefore, the insulation performance test of the stator coil branch line plays a key role in whether the quality of the stator coil is qualified.

[0003] At present, the insulation performance of stator coil wire splitting is measured by manually layering the stator coil ends, manually splitting the wires, and then manually operating the detection instrument to measure the copper wires one by one. The manual operation method has low measurement efficiency, and for batch-level coils, the manual operation intensity is relatively high. At present, the industry has not achieved automatic layering and wire splitting of stator coils. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide an automatic detection device and method for the insulation performance of stator coil branch lines, which is easy to operate, accurate in measurement and highly versatile, aiming to solve the problems of manual stratification, manual branching and manual detection of the insulation performance of generator stator coil branch lines.

[0005] The technical solution of the present invention is specifically described as follows:

[0006] The detection device comprises a coil test basic platform A, a coil interlayer dislocation device B, a coil interlayer separation device C, and a coil line separation device D for each layer.

[0007] The coil interlayer dislocation device B is fixedly connected to the upper part of the coil test basic platform A, the coil interlayer separation device C is fixedly connected to the upper part of the coil test basic platform A, and the coil line separation device D for each layer is fixedly connected to the upper part of the coil test basic platform A.

[0008] The coil test basic platform A, the two positioning blocks of the coil test basic platform A can position the two sides of the stator coil, the limiting wheel can rotate along the limiting wheel seat around the entire circle to achieve the limiting of the upper part of the stator coil and the rotation of 180 degrees for avoidance, and the limiting wheel is made of insulating material.

[0009] The coil interlayer dislocation device B, in the upper and lower cylinder modules of the device, the first cylinder and the third cylinder respectively push the upper and lower side surfaces of the stator coil laterally horizontally for interlayer dislocation, wherein the lowest point of the lower end of the first cylinder piston rod cannot be lower than the interface between the upper and lower layers of the stator coil, and similarly, the highest point of the upper end of the third cylinder piston rod cannot be higher than the interface between the upper and lower layers of the stator coil, and the ends of the two cylinder piston rods are equipped with insulating materials.

[0010] The coil interlayer separation device C, in which the piston rod end of the second cylinder is a quadrangular pyramid, the surface of the quadrangular pyramid is plated with insulating material, the tips of the upper and lower cone surfaces of the pyramid are R2 transition fillets, the upper and lower cone angles do not exceed 30 degrees, and the left and right cone angles do not exceed 5 degrees.

[0011] The coil interlayer separation device C, when the piston rod of the second cylinder in the device is extended, the pyramid at its end penetrates into the interlayer misalignment intersection of the lower and upper layers of the stator coil, and then realizes the cone angle separation in the vertical direction between the upper and lower layers of the stator coil through the four-sided pyramid surface.

[0012] The coil interlayer separation device C, when the piston rod of the second cylinder in the device is extended, after the pyramid at the end of the piston rod penetrates the interlayer misalignment intersection point between the lower layer and the upper layer of the stator coil, the end of the pyramid does not exceed the position point where the piston rod of the first cylinder pushes the upper layer of the stator coil.

[0013] The coil splitting device D for each layer, the first splitting needle, the second splitting needle, the third splitting needle, the fourth splitting needle, the fifth splitting needle, and the sixth splitting needle in the device, each splitting needle end width is not greater than 2mm, the needle end structure is conical and the needle tip taper angle is not greater than 60 degrees;

[0014] The coil branching device D for each layer, wherein all branching needle bodies are made of aluminum plates, the outer layer of the aluminum plates is coated with insulating paint, wherein the same side of all branching needle tips is not coated with insulating paint, the position of the needle tip not coated with insulating paint is used as a metal contact, and each branching needle tip metal contact realizes different control combinations through a short-circuit detection device, thereby realizing short-circuit detection between the strands of the stator coil.

[0015] The coil branching device D for each layer has six flexible cables branched out on one side of a flexible cable hub device, each of which is connected one-to-one with the upper ends of six branching needle bodies, and the flexible cables can move accordingly with the branching needles. The other side of the flexible cable hub device is connected to the short-circuit detection device by a flexible cable, so that all the branching needle tip contacts are connected to the conductive path of the short-circuit detection device through the flexible cable hub device, thereby realizing short-circuit detection between the strands of the stator coil.

[0016] The present invention also provides a method for automatically detecting the insulation performance of a stator coil branch line, using the aforementioned automatic detection device for the insulation performance of a stator coil branch line to automatically detect the insulation performance of the stator coil of the generator, the method comprising:

[0017] S1. The automated detection method for the insulation performance of stator coil line division is completed by the coil positioning method, the coil interlayer misalignment method, the coil interlayer separation method, the automatic line division and detection method of each layer of coil in sequence, and is specifically implemented by four devices: coil test basic platform A, coil interlayer misalignment device B, coil interlayer separation device C, and each layer of coil line division device D.

[0018] S2. The coil positioning method in S1 is to place the stator coil on the supporting platform, and to position the two ends of the stator coil by the positioning block, and to limit the upper end of the stator coil by the limiting wheel, which is specifically implemented by the coil test basic platform A. The coil test basic platform A includes: two positioning blocks abutting against the two ends of the stator coil for positioning, wherein the first positioning block is fixedly connected to the supporting platform, the second positioning block is movably plugged into the supporting platform, the limiting wheel is movably hinged to the limiting wheel seat, the limiting wheel can rotate along the limiting wheel seat around the entire circle, so as to limit the upper end of the stator coil and rotate 180 degrees to avoid, the limiting wheel seat is fixedly connected to the base, and the support platform is fixedly connected to the base.

[0019] S3. The coil interlayer dislocation method in S1 is to realize interlayer dislocation of the upper and lower layers of the coil by respectively pushing the upper and lower layers of the coil sideways with two cylinders, which is specifically realized by an interlayer dislocation device B. The interlayer dislocation device B includes: upper and lower cylinder modules are used to realize interlayer dislocation of the upper and lower layers of the stator coil, the upper cylinder module includes a first cylinder fixedly connected to a first cylinder fixing seat, the first cylinder fixing seat is fixedly connected to the upper end of the first transmission block, the lower end of the first transmission block is slidably connected to the fixed slide rail, the fixed slide rail is fixedly connected to the base, the center threaded hole of the first transmission block is spirally connected to the first spiral transmission rod, the two ends of the first spiral transmission rod are rotatably connected to the bearing support, and one end of the first spiral transmission rod is fixedly connected to the first motor shaft through a coupling; the first motor is fixed to the first motor fixing seat The first motor fixing seat is fixedly connected to the base, so that the first motor drives the first spiral transmission rod to drive the first cylinder to reciprocate; similarly, the lower cylinder module includes a third cylinder fixedly connected to the third cylinder fixing seat, the third cylinder fixing seat is fixedly connected to the upper end of the second transmission block, the lower end of the second transmission block is slidably connected to the fixed slide rail, the fixed slide rail is fixedly connected to the base, the center threaded hole of the second transmission block is spirally connected to the fifth spiral transmission rod, the two ends of the fifth spiral transmission rod are rotatably connected to the bearing support, and one end of the fifth spiral transmission rod is fixedly connected to the fifth motor shaft through a coupling; the fifth motor is fixedly connected to the fifth motor fixing seat, and the fifth motor fixing seat is fixedly connected to the base, so that the fifth motor drives the fifth spiral transmission rod to drive the third cylinder to reciprocate.

[0020] S4. The coil interlayer separation method in S1 is to perform interlayer vertical cone angle separation on the upper and lower interface of the coil that has completed interlayer dislocation by using a cylinder piston rod, which is specifically implemented by a coil interlayer separation device C. The coil interlayer separation device C includes a second cylinder seat fixedly connected to the base; the second cylinder seat is fixedly connected to the second cylinder.

[0021] S5. The automatic wire splitting and detection method for each layer of coils in S1 is to automatically split each copper wire of each layer of coils for the upper and lower layers of coils that have completed interlayer separation, and directly perform short-circuit detection after splitting. The wire splitting and short-circuit detection are specifically implemented by a wire splitting device D for each layer of coils. The wire splitting device D for each layer of coils includes a third motor fixedly connected to a third motor fixing seat; the third motor fixing seat is fixedly connected to a stand; the other end of a third spiral transmission rod is spirally connected to a central screw hole of a third transmission block, one end of the third spiral transmission rod is fixedly connected to a third motor shaft through a coupling, and the other end of the third spiral transmission rod is rotationally connected to a bearing support; the third transmission block is fixedly connected to a base of the wire splitting device; the base of the wire splitting device is slidably connected to a fixed dovetail slide rail; the fixed dovetail slide rail is fixedly connected to a stand, and the stand is fixedly connected to a base; a second motor module is fixedly connected to a motor fixing seat; one end of a second spiral transmission rod is fixedly connected to an end of a shaft of a second motor module through a coupling, and the other end of the second spiral transmission rod is rotationally connected to a bearing support, and the second spiral transmission rod The fourth motor module is fixedly connected to the motor fixing seat; the shaft end of the fourth motor module is fixedly connected to the fourth spiral transmission rod through a coupling, the two ends of the fourth spiral transmission rod are rotatably connected to the bearing support, the central screw hole of the fourth transmission block is spirally connected to the fourth spiral transmission rod, and the fourth transmission block is fixedly connected to the second branch line needle; the first branch line needle, the second branch line needle, the third branch line needle, the fourth branch line needle, the fifth branch line needle, and the sixth branch line needle can all move back and forth along the slide groove, and each branch line needle is movably hinged through the first connecting rod and the second connecting rod, and similarly, the first connecting rod and the second connecting rod are movably hinged; the first branch line needle, the second branch line needle, the third branch line needle, the fourth branch line needle, the fifth branch line needle, and the sixth branch line needle can all be movably connected to the six flexible cables on one side of the flexible cable hub device in a one-to-one corresponding manner, the short-circuit detection device can be movably connected to one flexible cable on the other side of the flexible cable hub device, the flexible cable hub device is fixedly connected to the base of the branching device, and the short-circuit detection device is fixedly connected to the base of the branching device.

[0022] Due to the adoption of the above method, the beneficial effects of the present invention are:

[0023] 1. Through the coil interlayer dislocation method, the stator coil can be automatically dislocated between the upper and lower layers of the coil, replacing the manual layering of the stator coil.

[0024] 2. Through the coil layer separation method, on the basis of completing the stator coil upper and lower layer interlayer misalignment, the upper and lower layers of the stator coil are separated in the vertical cone angle to achieve insulation isolation between the stator coil layers before the branch line insulation performance test.

[0025] 3. Each copper wire can be automatically separated by the method of dividing each layer of coils. The main body of the dividing needle is an aluminum plate with an insulating paint coating on the outer layer of the aluminum plate. The same side of all the dividing needle tips is not coated with insulating paint. The position of the needle tip not coated with insulating paint is used as a metal contact. Short-circuit measurement is performed through the metal contact, that is, short-circuit detection can be quickly performed to complete the insulation performance test while automatically dividing the wires.

[0026] 4. The present invention is the first to realize the automatic layering and automatic line division of the stator coil line insulation performance detection, and can automatically detect while dividing the line, replacing the original manual operation, improving the detection efficiency, and has strong versatility, and can be extended to the relevant stator coil line insulation performance detection field. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solution of the present invention, the drawings mentioned in the solution will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a front view of the automatic detection device for the insulation performance of the stator coil branch line;

[0029] Figure 2 This is the front view of the stator coil branch insulation performance test basic platform A;

[0030] Figure 3 This is the front view of the interlayer dislocation device B for the insulation performance of the stator coil split line;

[0031] Figure 4 It is a top view of the stator coil split line insulation performance layer separation device C;

[0032] Figure 5 Rear view of stator coil wiring insulation performance for each layer of coil wiring device D.

[0033] Markings in the figure: 1-stator coil; 2-positioning block; 3-support platform; 4-first cylinder; 5-first cylinder fixing seat; 6-first transmission block; 7-first spiral transmission rod; 8-first motor; 9-first motor fixing seat; 10-second cylinder fixing seat; 11-wire dividing device base; 12-first wire dividing needle; 13-second spiral transmission rod; 14-second motor module; 15-third motor fixing seat; 16-third motor; 17-stand; 18-third spiral transmission rod; 19-fourth motor module; 20-fifth motor fixing seat; 21-fifth motor; 22-fifth spiral transmission rod; 23-second Transmission block; 24-third cylinder fixing seat; 25-third cylinder; 26-second branching needle; 27-third branching needle; 28-fourth branching needle; 29-fifth branching needle; 30-sixth branching needle; 31-first connecting rod; 32-second connecting rod; 33-limiting wheel; 34-limiting wheel seat; 35-third transmission block; 36-second cylinder; 37-base; 38-flexible cable collection device; 39-short circuit detection device; 40-coupling; 41-fourth spiral transmission rod; 42-bearing support; 43-fixed slide rail; 44-fixed dovetail slide rail; 45-motor fixing seat; 46-fourth transmission block; 47-slide groove. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different structures.

[0035] like Figure 1-5 As shown, this embodiment provides a method for automatically detecting the insulation performance of stator coil sub-lines, and the specific operation steps are as follows:

[0036] S1: The automated detection method for the insulation performance of stator coil line division is completed by the coil positioning method, the coil layer misalignment method, the coil layer separation method, the automatic line division and detection method of each layer of coil in sequence, and is specifically implemented by four devices: coil test basic platform A, coil layer misalignment device B, coil layer separation device C, and each layer of coil line division device D.

[0037] S2: The coil positioning method in S1 is to place the stator coil on the support platform, and to position the two ends of the stator coil by the positioning block, and to limit the upper end of the stator coil by the limiting wheel, which is specifically implemented by the coil test basic platform A. The coil test basic platform A includes: two positioning blocks 2 are abutted against the two ends of the stator coil 1 for positioning, wherein the first positioning block 2 is fixedly connected to the support platform 3, the second positioning block 2 is movably plugged into the support platform 3, the limiting wheel 33 is movably hinged to the limiting wheel seat 34, the limiting wheel 33 can rotate along the limiting wheel seat 34 throughout the circle, so as to limit the upper end of the stator coil 1 and rotate 180 degrees to avoid, the limiting wheel seat 34 is fixedly connected to the base 37, and the support platform 3 is fixedly connected to the base 37.

[0038] S3: The coil interlayer dislocation method in S1 is to realize interlayer dislocation of the upper and lower layers of the coil by respectively pushing the upper and lower layers of the coil sideways with two cylinders, which is specifically realized by an interlayer dislocation device B, which includes: upper and lower cylinder modules are used to realize interlayer dislocation of the upper and lower coils in the stator coil 1, the upper cylinder module includes a first cylinder 4 fixedly connected to a first cylinder fixing seat 5, the first cylinder fixing seat 5 is fixedly connected to the upper end of a first transmission block 6, the lower end of the first transmission block 6 is slidably connected to a fixed slide rail 43, the fixed slide rail 43 is fixedly connected to a base 37, the center threaded hole of the first transmission block 6 is spirally connected to a first spiral transmission rod 7, both ends of the first spiral transmission rod 7 are rotatably connected to a bearing support 42, and one end of the first spiral transmission rod 7 is fixedly connected to the shaft of a first motor 8 through a coupling 40; the first motor 8 is fixedly connected to a first motor fixing seat 9, the first motor fixing seat 9 It is fixedly connected to the base 37, so that the first motor 8 drives the first spiral transmission rod 7 to drive the first cylinder 4 to reciprocate; similarly, the lower cylinder module includes a third cylinder 25 fixedly connected to the third cylinder fixing seat 24, the third cylinder fixing seat 24 is fixedly connected to the upper end of the second transmission block 23, the lower end of the second transmission block 23 is slidably connected to the fixed slide rail 43, the fixed slide rail 43 is fixedly connected to the base 37, the center threaded hole of the second transmission block 23 is spirally connected to the fifth spiral transmission rod 22, the two ends of the fifth spiral transmission rod 22 are rotatably connected to the bearing support 42, and one end of the fifth spiral transmission rod 22 is fixedly connected to the shaft of the fifth motor 21 through the coupling 40; the fifth motor 21 is fixedly connected to the fifth motor fixing seat 20, and the fifth motor fixing seat 20 is fixedly connected to the base 37, so that the fifth motor 21 drives the fifth spiral transmission rod 22 to drive the third cylinder 25 to reciprocate.

[0039] S4: The coil interlayer separation method in S1 is to separate the upper and lower interface of the coil that has completed interlayer dislocation in a cone angle in the vertical direction of the interlayer by a cylinder piston rod, which is specifically implemented by a coil interlayer separation device C. The coil interlayer separation device C includes a second cylinder fixing seat 10 fixedly connected to the base 37, and the second cylinder fixing seat 10 is fixedly connected to the second cylinder 36.

[0040] S5: The automatic wire splitting and detection method for each layer of coils in S1 is to automatically split the copper wires of each layer of coils for the upper and lower layers of coils that have completed interlayer separation, and directly perform short-circuit detection after splitting. The wire splitting and short-circuit detection are specifically implemented by a wire splitting device D for each layer of coils. The wire splitting device D for each layer of coils includes a third motor 16 fixedly connected to a third motor fixing seat 15; the third motor fixing seat 15 is fixedly connected to a stand 17; the other end of the third spiral transmission rod 18 is spirally connected to the central screw hole of the third transmission block 35, and one end of the third spiral transmission rod 18 is fixedly connected to the shaft of the third motor 16 through a coupling 40. The third transmission block 35 is fixedly connected to the line dividing device base 11; the line dividing device base 11 is slidably connected to the fixed dovetail slide rail 44; the fixed dovetail slide rail 44 is fixedly connected to the stand 17, and the stand 17 is fixedly connected to the base 37; the second motor module 14 is fixedly connected to the motor fixing seat 45; one end of the second spiral transmission rod 13 is fixedly connected to the shaft end of the second motor module 14 through the coupling 40, and the other end of the second spiral transmission rod 13 is rotatably connected to the bearing support 42, and the second spiral transmission rod 13 is spirally connected to the first line dividing needle 12 The fourth motor module 19 is fixedly connected to the motor fixing seat 45; the shaft end of the fourth motor module 19 is fixedly connected to the fourth spiral transmission rod 41 through the coupling 40, and the two ends of the fourth spiral transmission rod 41 are rotatably connected to the bearing support 42, and the center screw hole of the fourth transmission block 46 is spirally connected to the fourth spiral transmission rod 41, and the fourth transmission block 46 is fixedly connected to the second branch line needle 26; the first branch line needle 12, the second branch line needle 26, the third branch line needle 27, the fourth branch line needle 28, the fifth branch line needle 29, and the sixth branch line needle 30 can all reciprocate along the slide groove 47, and each branch line needle is connected by the first connecting rod 31 and The second connecting rod 32 is movably hinged, and similarly, the first connecting rod 31 and the second connecting rod 32 are movably hinged; the upper ends of the first branching needle 12, the second branching needle 26, the third branching needle 27, the fourth branching needle 28, the fifth branching needle 29, and the sixth branching needle 30 can be movably connected with the six flexible cables on one side of the flexible cable hub device 38 in a one-to-one correspondence, and the short-circuit detection device 39 can be movably connected with one flexible cable on the other side of the flexible cable hub device 38. The flexible cable hub device 38 is fixedly connected to the branching device base 11, and the short-circuit detection device 39 is fixedly connected to the branching device base 11.

[0041] Furthermore, the coil test basic platform A in the above S2 has two positioning blocks 2 which are abutted against the two ends of the stator coil 1 for positioning, and the limiting wheel 33 can rotate along the limiting wheel seat 34 throughout a circle to limit the upper end of the stator coil 1 and rotate 180 degrees to avoid it, and the limiting wheel is made of insulating material.

[0042] In the coil test basic platform A, the two positioning blocks can realize the positioning of the two sides of the stator coil, and the limiting wheel can realize the limiting and avoidance of the upper part of the coil by rotating along the limiting wheel seat.

[0043] Furthermore, in the coil interlayer dislocation device B in the above-mentioned S3, in the upper and lower cylinder modules of the device, the first cylinder 4 and the third cylinder 25 respectively push the upper and lower sides of the stator coil laterally horizontally for interlayer dislocation, the lowest point of the lower end of the piston rod of the first cylinder 4 cannot be lower than the boundary surface between the upper and lower layers of the stator coil, and similarly, the highest point of the upper end of the piston rod of the third cylinder 25 cannot be higher than the boundary surface between the upper and lower layers of the stator coil, and the ends of the piston rods of the two cylinders are equipped with insulating materials.

[0044] In the coil interlayer misalignment device B, the cylinder piston rods of the upper and lower cylinder modules push the sides of the upper and lower coils of the stator coil to cross-swing, thereby achieving interlayer misalignment between the upper and lower layers of the stator coil.

[0045] Furthermore, in the coil interlayer separation device C in the above S4, the piston rod end of the second cylinder 36 is a quadrangular pyramid, the surface of the quadrangular pyramid is plated with insulating material, the tips of the upper and lower cone surfaces of the pyramid are R2 transition fillets, the angle between the upper and lower cone surfaces does not exceed 30 degrees, and the angle between the left and right cone surfaces does not exceed 5 degrees.

[0046] In the coil interlayer separation device C, the piston rod end of the second cylinder is a quadrangular pyramid and the surface is plated with insulating material. The angle between the upper and lower cone surfaces of the pyramid does not exceed 30 degrees. The upper and lower cone surfaces of the piston rod end of the second cylinder realize the vertical swing separation between the upper and lower layers of the stator coil, and the quadrangular pyramid insulation ensures that it does not interfere with the stator coil short-circuit detection. The angle between the left and right cone surfaces of the piston rod end of the second cylinder does not exceed 5 degrees, ensuring that the side cone surface of the piston rod end of the second cylinder is smoothly inserted into the interlayer misalignment intersection of the lower and upper layers of the stator coil.

[0047] Furthermore, in the coil interlayer separation device C in the above S4, when the piston rod of the second cylinder 36 is extended, the tetrahedron at the end of the piston rod passes through the interlayer misalignment intersection of the lower layer and the upper layer of the stator coil 1, and then the vertical separation between the upper layer and the lower layer of the stator coil 1 is achieved through the tetrahedron surface.

[0048] In the coil layer separation device C, when the piston rod of the second cylinder is extended, the pyramid at the end of the piston rod of the second cylinder passes through the interlayer misalignment intersection of the upper and lower layers of the stator coil, and the vertical separation between the upper and lower layers of the stator coil is achieved through the pyramid surface.

[0049] Furthermore, in the coil interlayer separation device C in the above S4, when the piston rod of the second cylinder 36 is extended, after the pyramid at its end passes through the interlayer misalignment intersection point between the lower layer and the upper layer of the stator coil 1, the end of the pyramid does not exceed the position point where the piston rod of the first cylinder 4 pushes the upper layer of the stator coil 1.

[0050] In the coil interlayer separation device C, after the piston rod of the second cylinder passes through the interlayer misalignment intersection of the upper and lower layers of the stator coil, the end of the pyramid does not exceed the position point where the piston rod of the first cylinder pushes the upper layer of the stator coil.

[0051] Furthermore, in the above-mentioned coil dividing device D for each layer in S5, the first dividing needle 12, the second dividing needle 26, the third dividing needle 27, the fourth dividing needle 28, the fifth dividing needle 29, and the sixth dividing needle 30 in the device, each of which has a body made of insulating material, a width of the dividing needle end not exceeding 2 mm, a conical structure of the needle end, and a needle tip conical angle not exceeding 60 degrees.

[0052] In each layer of coil dividing device D, the main bodies of all the dividing needles in the device are made of insulating material, the width of each dividing needle end is not greater than 2 mm, the needle end structure is conical and the needle tip conical angle is not greater than 60 degrees.

[0053] Furthermore, in the above-mentioned coil dividing device D for each layer in S5, all the dividing needle bodies in the device are made of aluminum plates, the outer layer of the aluminum plates is coated with insulating paint, wherein the same side of all the dividing needle tips is not coated with insulating paint, and the position of the needle tip not coated with insulating paint is used as a metal contact, and each metal contact of the dividing needle tip realizes different control combinations through the short-circuit detection device 39, thereby realizing short-circuit detection between the strands of the stator coil 1.

[0054] In each layer of coil dividing device D, the same side of the needle tips of all the dividing needles is not coated with insulating paint, and the position of the needle tips not coated with insulating paint is used as a metal contact. The dividing needle is inserted into each copper wire and can form good contact with each copper wire through the metal contact. The metal contact realizes different control combinations through the short-circuit detection device 39, thereby realizing multiple groups of short-circuit detection between the strands of the stator coil.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic detection device for insulation performance of stator coil sub-line, characterized in that: The detection device includes a coil test basic platform A, a coil interlayer dislocation device B, a coil interlayer separation device C, and a coil line separation device D for each layer; The coil interlayer dislocation device B is fixedly connected to the upper part of the coil test basic platform A, the coil interlayer separation device C is fixedly connected to the upper part of the coil test basic platform A, and the coil line separation device D for each layer is fixedly connected to the upper part of the coil test basic platform A.

2. The automatic detection device for insulation performance of stator coil sub-line according to claim 1 is characterized in that: The coil test basic platform A, wherein the two positioning blocks (2) of the coil test basic platform A can limit the two sides of the stator coil, and the limiting wheel (33) can rotate along the limiting wheel seat (34) around the entire circumference to limit the upper part of the stator coil (1) and rotate 180 degrees to avoid it, and the limiting wheel is made of insulating material.

3. The automatic detection device for insulation performance of stator coil sub-line according to claim 1 is characterized in that: The coil interlayer dislocation device B, in which the first cylinder (4) and the third cylinder (25) respectively push the upper and lower side surfaces of the stator coil laterally and horizontally to perform interlayer cross dislocation, the lowest point of the lower end of the piston rod of the first cylinder (4) cannot be lower than the interface between the upper and lower layers of the stator coil, and similarly, the highest point of the upper end of the piston rod of the third cylinder (25) cannot be higher than the interface between the upper and lower layers of the stator coil, and the ends of the piston rods of the two cylinders are equipped with insulating materials.

4. The automatic detection device for insulation performance of stator coil sub-line according to claim 1 is characterized in that: The coil interlayer separation device C has a piston rod end of a second cylinder (36) that is a quadrangular pyramid, the surface of which is plated with insulating material, the tips of the upper and lower cone surfaces of the pyramid are R2 transition fillets, the angle between the upper and lower cone surfaces does not exceed 30 degrees, and the angle between the left and right cone surfaces does not exceed 5 degrees.

5. The automatic detection device for insulation performance of stator coil sub-line according to claim 1 is characterized in that: In the coil interlayer separation device C, when the piston rod of the second cylinder (36) is extended, the quadrangular pyramid at the end of the piston rod passes through the interlayer misalignment intersection of the lower layer and the upper layer of the stator coil (1), and then the upper layer and the lower layer of the stator coil (1) are separated in the vertical direction through the quadrangular pyramid surface.

6. The automatic detection device for insulation performance of stator coil sub-line according to claim 1 is characterized in that: In the coil interlayer separation device C, when the piston rod of the second cylinder (36) is extended, after the pyramid at the end of the piston rod passes through the interlayer misalignment intersection of the lower layer and the upper layer of the stator coil (1), the end of the pyramid does not exceed the position point where the piston rod of the first cylinder (4) pushes the upper layer of the stator coil (1) side.

7. The automatic detection device for insulation performance of stator coil sub-line according to claim 1 is characterized in that: The coil dividing device D for each layer, the first dividing needle (12), the second dividing needle (26), the third dividing needle (27), the fourth dividing needle (28), the fifth dividing needle (29), and the sixth dividing needle (30), each of which has an end width of no more than 2 mm, a needle end structure in a conical shape, and a needle tip conical angle of no more than 60 degrees.

8. The automatic detection device for insulation performance of stator coil sub-line according to claim 1 is characterized in that: The coil splitting device D for each layer, wherein all the splitting needle bodies in the device are made of aluminum plates, the outer layer of the aluminum plates is coated with insulating paint, wherein the same side of all the splitting needle tips is not coated with insulating paint, and the position of the needle tips not coated with insulating paint is used as a metal contact, and each splitting needle tip metal contact realizes different control combinations through a short-circuit detection device (39), thereby realizing short-circuit detection between the strands of the stator coil (1).

9. The automatic detection device for insulation performance of stator coil sub-line according to claim 1, characterized in that: The coil dividing device D for each layer has a flexible cable collection device (38) in which six flexible cables are divided on one side, each of which is connected to the upper end of six dividing needle bodies in a one-to-one correspondence. The flexible cables can move accordingly with the dividing needles. The other side of the flexible cable collection device (38) is connected to the short-circuit detection device (39) by a flexible cable, thereby realizing that all the branch needle tip contacts are connected to the short-circuit detection device (39) conductive path through the flexible cable collection device (38), thereby realizing short-circuit detection between the strands of the stator coil (1).

10. A method for automatically detecting the insulation performance of stator coil sub-line, characterized in that: Using the automated detection device as described in claims 1-9, the method comprises: S1. The automatic detection method of the insulation performance of the stator coil line is completed by the coil positioning method, the coil interlayer misalignment method, the coil interlayer separation method, the automatic line splitting and detection method of each layer of coils in sequence, and is specifically implemented by four devices: coil test basic platform A, coil interlayer misalignment device B, coil interlayer separation device C, and each layer of coil line splitting device D; S2, the coil positioning method in S1 is to place the stator coil on the support platform, position the two ends of the stator coil by the positioning block, and limit the upper end of the stator coil by the limiting wheel, which is specifically implemented by the coil test basic platform A, and the coil test basic platform A comprises: two positioning blocks (2) abutting against the two ends of the stator coil (1), the first positioning block (2) is fixedly connected to the support platform (3), the second positioning block (2) is movably plugged into the support platform (3), the limiting wheel (33) is movably hinged to the limiting wheel seat (34), the limiting wheel seat (34) is fixedly connected to the base (37), the support platform (3) is fixedly connected to the base (37), and the limiting wheel is made of insulating material; S3, the coil interlayer dislocation method in S1 is to realize cross dislocation between the upper and lower layers of the coil by respectively pushing the upper and lower layers of the coil sideways with two cylinders, which is specifically realized by an interlayer dislocation device B, which comprises: upper and lower cylinder modules are used to realize interlayer dislocation of the upper and lower layers of the stator coil (1), the upper cylinder module comprises a first cylinder (4) fixedly connected to a first cylinder fixing seat (5), the first cylinder fixing seat (5) is fixedly connected to the upper end of a first transmission block (6), and the lower end of the first transmission block (6) is fixedly connected to the upper end of the first transmission block (6). The first end of the first transmission block (6) is slidably connected to the fixed slide rail (43), the fixed slide rail (43) is fixedly connected to the base (37), the central threaded hole of the first transmission block (6) is spirally connected to the first spiral transmission rod (7), the two ends of the first spiral transmission rod (7) are rotatably connected to the bearing support (42), one end of the first spiral transmission rod (7) is fixedly connected to the shaft of the first motor (8) through a coupling (40); the first motor (8) is fixedly connected to the first motor fixing seat (9), and the first motor fixing seat (9) is fixedly connected to the base (37). The first motor (8) drives the first spiral transmission rod (7) to drive the first cylinder (4) to reciprocate; similarly, the lower cylinder module comprises a third cylinder (25) fixedly connected to a third cylinder fixing seat (24), the third cylinder fixing seat (24) is fixedly connected to the upper end of the second transmission block (23), the lower end of the second transmission block (23) is slidably connected to the fixed slide rail (43), the fixed slide rail (43) is fixedly connected to the base (37), the center threaded hole of the second transmission block (23) is connected to the third cylinder fixing seat (24), and the third cylinder fixing seat (24) is fixedly connected to the upper end of the second transmission block (23). The fifth spiral transmission rod (22) is spirally connected, both ends of the fifth spiral transmission rod (22) are rotatably connected to the bearing support (42), one end of the fifth spiral transmission rod (22) is fixedly connected to the shaft of the fifth motor (21) through a coupling (40); the fifth motor (21) is fixedly connected to the fifth motor fixing seat (20), and the fifth motor fixing seat (20) is fixedly connected to the base (37), thereby realizing that the fifth spiral transmission rod (22) is driven by the fifth motor (21) to drive the third cylinder (25) to reciprocate; S4, the coil interlayer separation method in S1 is to separate the upper and lower interface of the coil that has completed interlayer dislocation in the vertical direction at a cone angle by using a cylinder piston rod, and is specifically implemented by a coil interlayer separation device C, which includes a second cylinder seat (10) fixedly connected to a base (37); the second cylinder seat (10) is fixedly connected to a second cylinder (36); S5. The automatic wire splitting and detection method for each layer of coils in S1 is to automatically split each copper wire of each layer of coils for the upper and lower layers of coils that have completed interlayer separation, and directly perform short circuit detection after splitting. The wire splitting and short circuit detection are specifically implemented by a wire splitting device D for each layer of coils. The wire splitting device D for each layer of coils includes a third motor (16) fixedly connected to a third motor fixing seat (15); the third motor fixing seat (15) is fixedly connected to a stand (17); the other end of a third spiral transmission rod (18) is spirally connected to a central screw hole of a third transmission block (35); one end of the third spiral transmission rod (18) is fixedly connected to a shaft of a third motor (16) via a coupling (40); and the third spiral transmission rod ( 18) and the other end is rotatably connected to the bearing support (42); the third transmission block (35) is fixedly connected to the line dividing device base (11); the line dividing device base (11) is slidably connected to the fixed dovetail slide rail (44); the fixed dovetail slide rail (44) is fixedly connected to the stand (17), and the stand (17) is fixedly connected to the base (37); the second motor module (14) is fixedly connected to the motor fixed seat (45); one end of the second spiral transmission rod (13) is fixedly connected to the shaft end of the second motor module (14) through a coupling (40), the other end of the second spiral transmission rod (13) is rotatably connected to the bearing support (42), and the second spiral transmission rod (13) is spirally connected to the first line dividing needle (12); the fourth motor The module (19) is fixedly connected to the motor fixing seat (45); the shaft end of the fourth motor module (19) is fixedly connected to the fourth spiral transmission rod (41) through a coupling (40); the two ends of the fourth spiral transmission rod (41) are rotatably connected to the bearing support (42); the central screw hole of the fourth transmission block (46) is spirally connected to the fourth spiral transmission rod (41); the fourth transmission block (46) is fixedly connected to the second dividing line needle (26); the first dividing line needle (12), the second dividing line needle (26), the third dividing line needle (27), the fourth dividing line needle (28), the fifth dividing line needle (29), and the sixth dividing line needle (30) are all capable of reciprocating along the slide groove (47), and each dividing line needle is connected to each other through the first connecting rod (31) and The second connecting rod (32) is movably hinged, and similarly, the first connecting rod (31) and the second connecting rod (32) are movably hinged; the upper ends of the first branching needle (12), the second branching needle (26), the third branching needle (27), the fourth branching needle (28), the fifth branching needle (29), and the sixth branching needle (30) can be movably connected to the six flexible cables on one side of the flexible cable collection device (38) in a one-to-one correspondence, the short-circuit detection device (39) can be movably connected to one flexible cable on the other side of the flexible cable collection device (38), the flexible cable collection device (38) is fixedly connected to the branching device base (11), and the short-circuit detection device (39) is fixedly connected to the branching device base (11).

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