Verification test device and method for modular mutual inductor

Abstract

The invention discloses a verification test device and method for a modular mutual inductor, and relates to the technical field of mutual inductor measurement. The verification test device for the modular mutual inductor comprises a fan, and the air outlet end of the fan is communicated with a primary side clamping device and a secondary side clamping device; the clamping piece is arranged on the outer side of the mutual inductor bolt and comprises a clamp, the end, away from the mutual inductor bolt, of the clamp is connected with a movable part, and the movable part controls the air bag to stretch out and draw back through the wind pressure effect so as to open or close the clamp. According to the verification test device and method for the modular mutual inductor, all the clamps at the primary side of the pre-clamping mutual inductor are opened and a certain distance is reserved through wind power, all the clamps at the primary side of the pre-clamping mutual inductor are opened, and all the clamps are closed at the same time through the elastic recovery effect; and the clamping work of all the mutual inductor detection bolts is completed at a time.

Description

Technical Field

[0001] The present invention relates to the technical field of mutual inductor measurement, and in particular to a verification and testing device and method for modular mutual inductors. Background Art

[0002] A transformer is an instrument that converts a large current or high voltage on the primary side into a small current or low voltage on the secondary side for measurement based on the principle of electromagnetic induction. In order to ensure the measurement and metering accuracy of the transformer, the transformer needs to be inspected regularly.

[0003] Referring to Chinese Patent Publication No.: CN109932674B, a transformer detection fixture and a transformer detection system include: a bearing member, a contact assembly and a first positioning member, wherein the first positioning member is provided with a first positioning hole, and the first positioning hole is used for positioning and cooperating with the first positioning pin on the tray so that the contact assembly contacts and cooperates with the detection contact. The transformer detection fixture is clamped and placed at the transformer by a robot, and then the contact assembly is stably installed through the bearing member, so that the contact assembly and the detection contact can be stably contacted and matched. Since the bearing member is provided with a first positioning member and the first positioning member is provided with a first positioning hole, during the installation of the transformer detection fixture, the first positioning hole of the first positioning member is inserted into the first positioning pin on the tray. At this time, the contact assembly on the bearing member is in contact with the detection contact, so that the detection personnel can quickly complete the connection between the transformer detection fixture and the detection contact on the transformer, which is beneficial to improve the detection efficiency of the transformer.

[0004] However, the positions of the primary and secondary sides of the transformer still need to be determined, and the detection bolts of the primary side and the secondary side of the transformer need to be connected in sequence through the clamp. For example, patent publication number CN109932674B requires the robot to clamp the clamp and place it at the transformer, but the positions of the bolts are different, and the robot cannot clamp all the clamps on the bolts at one time. The clamping of each bolt requires the robot to complete the movement, positioning, driving the clamp and clamping the bolt. It is not a simple instruction, and the robot has high precision requirements; the primary and secondary sides of the transformer are located at the top and bottom of the transformer, respectively, separated from each other, and are mostly connected separately, and cannot be connected at one time through a common power method. For example, patent publication number CN109932674B requires the setting of bearing parts, contact components, and positioning parts at the transformer bolts and cooperate with the robot, and the clamping work of all transformer bolts cannot be completed through a structure and common power. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a calibration and testing device and method for modular transformers, which uses wind force to open all clamps at the primary side of the pre-clamped transformer and leave a certain distance, so that all clamps at the primary side of the pre-clamped transformer are opened, and through elastic recovery, all clamps are closed at the same time, completing the clamping work of all transformer detection bolts at one time.

[0006] Technical solution: To achieve the above objectives, the present invention is implemented through the following technical solution: A calibration and testing device for modular transformers, comprising: a fan, wherein the air outlet of the fan is respectively connected to the primary side clamping device and the secondary side clamping device, the primary side clamping device controls the clamping or loosening of the transformer and the primary side detection bolt through the action of wind pressure, and the secondary side clamping device controls the clamping or loosening of the transformer and the secondary side detection bolt through the action of wind pressure.

[0007] A side plate, the top of which is connected to the bottom of the secondary side clamping device, and the side plate is connected to the bottom of the primary side clamping device through an end plate.

[0008] The clamping member is arranged outside the transformer bolt, and the clamping member comprises: a clamp, and one end of the clamp away from the transformer bolt is connected with a movable part, and the movable part controls the expansion and contraction of the airbag through the action of wind pressure to open or close the clamp.

[0009] Preferably, each of the clamping parts includes two movable parts, and each of the movable parts includes: a horizontal plate, which is arranged above the side plate, and a first side plate and a second side plate are arranged between the two horizontal plates, and both ends of the first side plate and both ends of the second side plate are connected to the side close to the two horizontal plates, and the distance between the first side plate and the axis of the clamp is the distance between the second side plate and the axis of the clamp, and a circular hole is opened through the middle of the first side plate, and the side of the first side plate close to the second side plate is connected to the airbag, and the airbag is a threaded tube, and the side of the airbag close to the second side plate is connected to the first connecting plate , both ends of the first connecting plate close to the second side plate are connected to slides, and the bottom of each slide is connected to a slider, and the first connecting plate is connected to the first side plate through a first spring away from the second side plate, and an air vent is opened in the middle of the first connecting plate, and the two cross plates are arranged on both sides of a clamping arm of the clamp, and the cross plate is slidably connected to the clamp, and the top and bottom of each clamping arm of the clamp close to the cross plate are provided with a sliding groove, and the slider is slidably connected to the sliding groove, and the side of each clamping arm of the clamp close to the cross plate is provided with a channel, and the circular hole is connected to the channel.

[0010] Preferably, the secondary side clamping device also includes: an air inlet plate, each of the air inlet plates is connected to a first side plate on one side close to the axis of the clamp, an air duct is provided at the bottom of each of the air inlet plates, the top of each of the air ducts is connected to a circular hole, the bottom of each of the air ducts is connected to a first air box, and the first air box is connected to the air outlet end of the fan through a second pipe.

[0011] Preferably, the clamping member also includes: a second connecting plate, which is respectively connected to one side of the two second side plates close to each other, the second connecting plate is composed of a T-shaped plate and a flat plate, the two sides of the second side plates close to each other are connected to two ends of the T-shaped plate, the bottom of the flat plate is connected to the bottom plate, the top of the flat plate is penetrated by a first threaded hole and extends into the bottom plate, the first threaded hole is threadedly connected to a connecting rod, each clamp arm of the clamp is connected to an extension plate on one side close to the clamp axis, and a sliding groove is provided on the top of the clamp and the top of the extension plate.

[0012] The vents are connected to the fan at the bottom of the air intake port and the air intake port is connected to the fan at the bottom of the air intake port.

[0013] Preferably, a detection member is provided on one side of the fan, and the detection member is electrically connected to each movable part through a wire, the same side of both ends of the side plate is connected to an end plate, the side plate and the two end plates form a U-shaped positioning plate, the bottom of the mutual inductor is adapted to the U-shaped positioning plate, the end of the end plate away from the side plate is an arc-shaped plate, the distance between the two arc-shaped plates on the side close to each other gradually shrinks along the axial direction of the side plate, the distance between the two arc-shaped plates close to one end of the side plate is smaller than the distance between the two arc-shaped plates away from one end of the side plate, the distance between the two arc-shaped plates close to one end of the side plate is the same as the width of the mutual inductor, the top of one end plate is connected to the bottom of the support plate, the elastic coefficient of the first spring is greater than the elastic coefficient of the second spring, the stiffness of the first spring is greater than the stiffness of the second spring, and after the fan stops supplying air, the speed at which the first spring returns to its original state is slower than the speed at which the second spring returns to its original state.

[0014] Preferably, a plurality of the primary-side clamping devices are equidistantly distributed along the axial direction of the second wind box, and a plurality of the secondary-side clamping devices are equidistantly distributed along the axial direction of the first wind box.

[0015] A verification and testing method for a modular mutual inductor comprises a verification and testing device for the modular mutual inductor, which is used to control the verification and testing device to clamp a detection bolt of the mutual inductor at one time under the action of wind pressure.

[0016] Beneficial effects: The present invention provides a verification and testing device and method for modular transformers. Compared with the prior art, it has the following beneficial effects: 1. A fan is used as a power source, and wind force is used to open all clamps on the primary side of the pre-clamped transformer and leave a certain distance, so as to avoid the contact of the bolts on the primary side of the clamp pre-clamped transformer during the pushing process of the U-shaped plate, thereby ensuring that the U-shaped plate can be pushed to the specified position and that all clamps are moved to the specified clamping position at one time. The wind force opens all clamps on the primary side of the pre-clamped transformer. After turning off the fan, under the action of elastic recovery, the clamp wants to return to the clamped state, and all clamps close at the same time, completing the clamping work of all transformer detection bolts at one time.

[0017] 2. After the fan is turned off, the gas in the wind cavity and the air bag is lost, but the gas loss speed of the wind cavity is faster. The first spring and the second spring have different elastic coefficients and stiffnesses. The first spring returns to its original state slower than the second spring, creating a time difference between the first spring and the second spring. The first spring moves the push plate away from the second wind box, and the push plate moves to the outside of the transformer detection bolt. Then the second spring moves the air bag and the first connecting plate away from the axis of the fixture in turn. The fixtures on the primary and secondary sides of the transformer detection bolt are tightened at the same time, completing the clamping action of the fixture on all transformer detection bolts at one time, which is efficient and convenient.

[0018] 3. The airbag is in the shape of a threaded tube with a metal frame connected to the thread. The outward expansion capacity of the airbag is limited and it mainly expands and contracts along the axis of the airbag.

[0019] 4. Initially, the push plate lies between the first air hole and the main air hole. The push plate is made of rubber and has good sealing properties. Therefore, only a very small amount of wind enters the first and second air holes through the gaps. Due to the different opening positions of the first and second air holes and the main air hole, the wind enters the wind cavity first and then the airbag. In the subsequent movement, there is a time difference between the tightening of the clamp and the movement of the push plate to the original position. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present application and, together with the description, further serve to explain the principles of the present application and enable those skilled in the relevant art to make and use the present application.

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the mutual inductor, the end plate, the fan, the support plate and the second pipeline.

[0024] Figure 3 for Figure 2 Schematic diagram of the structure after removing the mutual inductor.

[0025] Figure 4 It is a schematic diagram of the structure of the primary side clamping device, the secondary side clamping device, and the side plate.

[0026] Figure 5 It is a structural schematic diagram of the secondary side clamping device.

[0027] Figure 6 It is a schematic diagram of the structure of the clamping part and the air inlet plate.

[0028] Figure 7 It is a schematic diagram of the structure of the clamping part.

[0029] Figure 8 It is a structural diagram of the activity part.

[0030] Fig. 9 This is an exploded view of the activity department.

[0031] Fig.10 It is a schematic diagram of the structure of the part where the airbag and the skateboard are located.

[0032] Fig.11 It is a schematic diagram of the structure of a clamp arm and an extension plate of the clamp.

[0033] Fig.12 It is a structural schematic diagram of the primary side clamping device.

[0034] Fig.13 Exploded view of the primary side clamping device.

[0035] Fig.14It is a schematic front cross-sectional view of the plate body.

[0036] The reference numerals in the figure are: 11, detection member; 12, mutual inductor; 21, end plate; 22, side plate; 23, fan; 24, first pipeline; 25, second pipeline; 26, support plate; 3, secondary side clamping device; 31, first wind box; 32, clamping member; 321, clamp; 322, movable part; 3221, cross plate; 3222, first side plate; 3223, second side plate; 3224, air bag; 3225, first spring; 3226, first connecting plate; 3227, slide plate; 3228, slide block; 32 3. Second connecting plate; 324. Bottom plate; 325. Slide groove; 326. Channel; 327. First threaded hole; 328. Connecting rod; 329. Extension plate; 33. Air inlet plate; 34. Air duct; 35. Round hole; 4. Primary side clamping device; 41. Second air box; 42. Air inlet hole; 43. Plate body; 44. Air cavity; 45. Second spring; 46. Push plate; 47. Connecting block; 48. Second threaded hole; 49. Third pipe; 51. Main air hole; 52. First air hole; 53. Second air hole; 54. Top groove.

[0037] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] like Figure 1 - Fig.14As shown, an embodiment of the present invention provides a verification and testing device for a modular mutual inductor, comprising: a fan 23, wherein the air outlet end of the fan 23 is respectively connected to a primary-side clamping device and a secondary-side clamping device, wherein the primary-side clamping device controls the clamp 321 and the primary-side detection bolt of the mutual inductor 12 to be clamped or loosened through the action of wind pressure, and the secondary-side clamping device controls the clamp 321 and the secondary-side detection bolt of the mutual inductor 12 to be clamped or loosened through the action of wind pressure.

[0041] The side plate 22 has a top connected to the bottom of the secondary clamping device, and the side plate 22 is connected to the bottom of the primary clamping device through the end plate 21.

[0042] The clamping member 32 is arranged outside the bolt of the transformer 12, and includes: a clamp 321, and one end of the clamp 321 away from the bolt of the transformer 12 is connected to a movable part 322, and the movable part 322 controls the expansion and contraction of the airbag 3224 through wind pressure to open or close the clamp 321.

[0043] Each clamping member 32 includes two movable parts 322, each movable part 322 includes: a horizontal plate 3221, the horizontal plate 3221 is arranged above the side plate 22, a first side plate 3222 and a second side plate 3223 are arranged between the two horizontal plates 3221, both ends of the first side plate 3222 and both ends of the second side plate 3223 are connected to the side close to the two horizontal plates 3221, the distance between the first side plate 3222 and the axis of the clamp 321 is the distance between the second side plate 3223 and the axis of the clamp 321, a circular hole 35 is opened through the middle of the first side plate 3222, the side of the first side plate 3222 close to the second side plate 3223 is connected to the airbag 3224, the airbag 3224 is a threaded tube, and the side of the airbag 3224 close to the second side plate 3223 is connected to the first connecting plate 3226 The two ends of the first connecting plate 3226 close to the second side plate 3223 are connected with slide plates 3227, and the bottom of each slide plate 3227 is connected with a slider 3228. The first connecting plate 3226 is connected to the first side plate 3222 away from the second side plate 3223 through a first spring 3225. An air vent hole is penetrated through the middle of the first connecting plate 3226. Two cross plates 3221 are arranged on both sides of a clamping arm of the clamp 321. The cross plate 3221 is slidably connected to the clamp 321. A sliding groove 325 is formed at the top and bottom of one end of each clamping arm of the clamp 321 close to the cross plate 3221. The slider 3228 is slidably connected to the sliding groove 325. A channel 326 is penetrated through the side surface of one end of each clamping arm of the clamp 321 close to the cross plate 3221, and the round hole 35 is connected to the channel 326.

[0044] The secondary side clamping device also includes: an air inlet plate 33, each air inlet plate 33 is connected to a first side plate 3222 on one side close to the axis of the clamp 321, and an air duct 34 is opened at the bottom of each air inlet plate 33, the top of each air duct 34 is connected to the circular hole 35, and the bottom of each air duct 34 is connected to the first air box 31, and the first air box 31 is connected to the air outlet end of the fan 23 through the second pipe 25.

[0045] The clamping member 32 also includes: a second connecting plate 323, which is connected to one side of the two second side plates 3223 respectively, and the second connecting plate 323 is composed of a T-shaped plate and a flat plate, and the one side of the two second side plates 3223 that are close to each other is connected to the two ends of the T-shaped plate, and the bottom of the flat plate is connected to a bottom plate 324, and the top of the flat plate is penetrated by a first threaded hole 327 and extends into the bottom plate 324, and the first threaded hole 327 is threadedly connected to a connecting rod 328, and each clamping arm of the clamp 321 is connected to an extension plate 329 on one side close to the axis of the clamp 321, and a slide groove 325 is provided on the top of the clamp 321 and the top of the extension plate 329.

[0046] The primary side clamping device includes: a second wind box 41, an air inlet hole 42 is formed through the middle of one side of the second wind box 41, the air inlet hole 42 is connected to the air outlet end of the fan 23 through the first pipe 24, both ends of the second wind box 41 are connected to a plate body 43, an air cavity 44 is formed inside the plate body 43, a push plate 46 is connected to the side of the wind cavity 44 close to the second wind box 41 through a second spring 45, the push plate 46 is an L plate, a main air hole 51 is formed through the inner wall of the wind cavity 44 away from the side of the second wind box 41, and the air cavity 44 is close to the second wind box 41 on both sides of the two ... The inner wall is respectively penetrated with a first air hole 52 and a second air hole 53, a top groove 54 is formed at the top of the plate body 43 away from the second air box 41, and the top groove 54 is communicated with the air cavity 44, a connecting block 47 is connected to the end of the push plate 46 away from the second air box 41, the connecting block 47 is slidably connected to the top groove 54, the L plate is slidably connected to the top groove 54, the L plate is made of rubber, the first air hole 52 is connected to a movable part 322 through a third pipe 49, and the second air hole 53 is connected to another movable part 322 through another third pipe 49.

[0047] A detection member 11 is provided on one side of the fan 23, and the detection member 11 is electrically connected to each movable part 322 through a wire. The same side of both ends of the side plate 22 is connected to an end plate 21. The side plate 22 and the two end plates 21 form a U-shaped positioning plate. The bottom of the mutual inductor 12 is adapted to the U-shaped positioning plate. The end of the end plate 21 away from the side plate 22 is an arc-shaped plate. The distance between the two arc-shaped plates on the side close to each other gradually shrinks along the axial direction of the side plate 22. The distance between the two arc-shaped plates close to one end of the side plate 22 is smaller than the distance between the two arc-shaped plates away from one end of the side plate 22. The distance between the two arc-shaped plates close to one end of the side plate 22 is the same as the width of the mutual inductor 12. The top of an end plate 21 is connected to the bottom of the support plate 26.

[0048] A number of primary side clamping devices are equidistantly distributed along the axial direction of the second wind box 41, and a number of secondary side clamping devices are equidistantly distributed along the axial direction of the first wind box 31. The elastic coefficient of the first spring 3225 is greater than the elastic coefficient of the second spring 45, and the stiffness of the first spring 3225 is greater than the stiffness of the second spring 45. After the fan 23 stops supplying air, the speed at which the first spring 3225 returns to its original state is slower than the speed at which the second spring 45 returns to its original state.

[0049] A verification and testing method for a modular mutual inductor comprises a verification and testing device for a modular mutual inductor 12, which is used to control the verification and testing device to clamp a detection bolt of the mutual inductor 12 at one time under the action of wind pressure.

[0050] When in use, determine the model of the mutual inductor 12, and select a matching detection device (mainly including: a U-shaped plate, and the position and number of the primary side clamping device and the secondary side clamping device). Start the fan 23, and the air outlet of the fan 23 delivers the air to the first air box 31 and the second air box 41 through the first pipe 24 and the second pipe 25 respectively. The air in the second air box 41 flows into the air cavity 44 of the plate body 43 through the main air hole 51. The wind pressure in the air cavity 44 gradually increases, and the pressure on the plate of the push plate 46 located in the air cavity 44 increases. The push plate 46 moves with the second spring 45 connecting block 47 and the movable part 322 in the direction away from the detection bolt of the mutual inductor 12. When the plate of the push plate 46 located in the air cavity 44 slides from one end of the air cavity 44 to the other end, the push plate 46 stops moving. At this time, the first air hole 52 and the second air hole 53 are both in contact with the push plate 46. The air cavity 44 is completely connected (initially, the plate of the push plate 46 lies between the first air hole 52 and the main air hole 51. The push plate 46 is made of rubber and has good sealing performance. Therefore, only a very small amount of wind enters the first air hole 52 and the second air hole 53 through the gap). The wind in the air cavity 44 passes through the first air hole 52 and a third pipe 49 in turn into the air bag 3224 of the movable part 322. The wind in the air cavity 44 passes through the second air hole 53 and a third pipe 49 in turn into the other In the airbag 3224 of the movable part 322, the airbag 3224 expands and contracts like a balloon (the airbag 3224 is a threaded tube, and a metal frame is connected to the thread. The outward expansion ability of the airbag 3224 is limited, and it mainly contracts along the axis direction of the airbag 3224). The end of the airbag 3224 away from the second wind box 41 carries the first connecting plate 3226, the slide plate 3227, the slider 3228, and the first spring 3225 to slide along the direction of the slide groove 325. The first spring 3225 is stretched, and the first The connecting plate 3226 pushes the clamp arm of the clamp 321, and the two clamp arms gradually approach under the squeezing action of the two clamping parts 32, and the clamp head of the clamp 321 opens to the maximum, and the clamp 321 at the primary side of the mutual inductor 12 is opened, but the clamp 321 is at a distance from the primary side detection bolt of the mutual inductor 12, so that the clamp 321 can be prevented from contacting the primary side detection bolt of the mutual inductor 12 during the process of pushing the U-shaped plate, so that all the clamps 32 can be arranged to the appropriate position by one push. The wind in the first wind box 31 enters the air bag 3224 through the air duct 34 and the circular hole 35 in turn, and the air bag 3224 also squeezes the clamp arm of the clamp 321 with the first connecting plate 3226, so that the two clamp arms of one clamp 321 are close to each other, and the clamp 321 at the secondary side of the mutual inductor 12 is opened.

[0051] Make the side plate 22 face one side of the transformer 12, push the side plate 22 and the end plate 21, and the arc plate at the front end of the end plate 21 is close to the transformer 12. Since the distance between the two arc plates and one end of the side plate 22 is greater than the width of the transformer 12, the arc plate slides forward along the corner of the bottom of the transformer 12, and finally the inner side of one end of the two end plates 21 fits with the two sides of the bottom of the transformer 12, and the side plate 22 fits with the other side of the transformer 12. At this time, an open clamp 321 is placed outside the detection screw of the secondary side of the transformer 12, and an open clamp 321 is also placed on one side of the detection screw of the primary side of the transformer 12 (but the clamp 321 is not placed outside the detection screw of the primary side of the transformer 12, but is still a certain distance away).

[0052] When the fan 23 is turned off, the gas in the wind chamber 44 and the air bag 3224 will leak out, but the gas in the wind chamber 44 will leak out faster. The elastic coefficient of the first spring 3225 is greater than the elastic coefficient of the second spring 45, and the stiffness of the first spring 3225 is greater than the stiffness of the second spring 45. After the fan 23 stops supplying air, the first spring 3225 returns to its original state slower than the second spring 45 returns to its original state. The first spring 3225 moves with the push plate 46 away from the second wind box 41, and the push plate 46 moves to the outside of the detection bolt of the mutual inductor 12. Then the second spring 45 moves with the air bag 3224 and the first connecting plate 3226 away from the axis of the clamp 321 in turn. The clamps 321 on the primary and secondary sides of the detection bolt of the mutual inductor 12 are tightened at the same time, and the clamping action of the clamp 321 on all the detection bolts of the mutual inductor 12 is completed at one time, which is efficient and convenient. The overall structure is simple, with a fan 23 as a power source, using wind force to open all clamps 321 on the primary side of the pre-clamped transformer 12 and leave a certain distance, so as to avoid the clamps 321 from contacting the bolts on the primary side of the pre-clamped transformer 12 during the pushing process of the U-shaped plate, ensuring that the U-shaped plate can be pushed to the specified position, and ensuring that all clamps 321 are moved to the specified clamping position at one time. The wind force opens all clamps 321 on the primary side of the pre-clamped transformer 12. After the fan 23 is turned off, under the action of elastic recovery, the clamps 321 want to return to the clamped state, and all clamps 321 are closed at the same time, completing the clamping work of all transformer 12 detection bolts at one time.

[0053] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A verification and testing device for modular mutual inductors, characterized in that: include: A fan (23), wherein an air outlet end of the fan (23) is respectively connected to a primary-side clamping device and a secondary-side clamping device, wherein the primary-side clamping device controls the clamp (321) and the mutual inductor (12) primary-side detection bolt to be clamped or loosened through the action of wind pressure, and wherein the secondary-side clamping device controls the clamp (321) and the mutual inductor (12) secondary-side detection bolt to be clamped or loosened through the action of wind pressure; A side plate (22), wherein the top of the side plate (22) is connected to the bottom of the secondary side clamping device, and the side plate (22) is connected to the bottom of the primary side clamping device via an end plate (21); A clamping member (32) is arranged outside a bolt of the transformer (12), the clamping member (32) comprising: a clamp (321), one end of the clamp (321) away from the bolt of the transformer (12) being connected to a movable portion (322), the movable portion (322) controlling the extension and retraction of an air bag (3224) through the action of wind pressure to open or close the clamp (321).

2. The verification and testing device for modular mutual inductor according to claim 1, characterized in that: Each of the clamping members (32) comprises two movable parts (322), each of the movable parts (322) comprises: a transverse plate (3221), the transverse plate (3221) being arranged above the side plate (22), a first side plate (3222) and a second side plate (3223) being arranged between the two transverse plates (3221), both ends of the first side plate (3222) and both ends of the second side plate (3223) being connected to the sides of the two transverse plates (3221) that are close to each other, and the first side plate (3222) and the second side plate (3223) being connected to the sides of the two transverse plates (3221) that are close to each other. The distance between the side plate (3222) and the axis of the fixture (321) is the distance between the second side plate (3223) and the axis of the fixture (321); a circular hole (35) is provided through the middle of the first side plate (3222); a side of the first side plate (3222) close to the second side plate (3223) is connected to the airbag (3224); the airbag (3224) is in the shape of a threaded tube; a side of the airbag (3224) close to the second side plate (3223) is connected to the first connecting plate (3226); ), both ends of the first connecting plate (3226) close to the second side plate (3223) are connected to slide plates (3227), the bottom of each slide plate (3227) is connected to a slider (3228), the first connecting plate (3226) is connected to the first side plate (3222) via a first spring (3225) on the side away from the second side plate (3223), an air vent hole is provided in the middle of the first connecting plate (3226), and the two transverse plates (3221) are arranged on the fixture The cross plate (3221) is slidably connected to the clamp (321) on both sides of a clamp arm (321), and a slide groove (325) is provided at the top and bottom of one end of each clamp arm of the clamp (321) close to the cross plate (3221), and the slider (3228) is slidably connected to the slide groove (325). A hole (326) is penetrated and opened on the side surface of one end of each clamp arm of the clamp (321) close to the cross plate (3221), and the circular hole (35) is connected to the hole (326).

3. The verification and testing device for modular mutual inductor according to claim 2, characterized in that: The secondary side clamping device further comprises: an air inlet plate (33), wherein a side of each of the air inlet plates (33) close to the axis of the clamp (321) is connected to a first side plate (3222), an air duct (34) is provided at the bottom of each of the air inlet plates (33), the top end of each of the air ducts (34) is connected to a circular hole (35), the bottom end of each of the air ducts (34) is connected to a first air box (31), and the first air box (31) is connected to an air outlet end of the fan (23) via a second pipe (25).

4. The verification and testing device for modular mutual inductor according to claim 2, characterized in that: The clamping member (32) further comprises: a second connecting plate (323), wherein the second connecting plate (323) is respectively connected to the adjacent sides of the two second side plates (3223), the second connecting plate (323) is composed of a T-shaped plate and a flat plate, the adjacent sides of the two second side plates (3223) are connected to the two ends of the T-shaped plate, the bottom of the flat plate is connected to a bottom plate (324), the top of the flat plate is provided with a first threaded hole (327) extending into the bottom plate (324), the first threaded hole (327) is threadedly connected to a connecting rod (328), each clamping arm of the clamp (321) is connected to an extension plate (329) on one side adjacent to the axis of the clamp (321), and a slide groove (325) is provided on the top of the clamp (321) and the top of the extension plate (329).

5. The verification and testing device for modular mutual inductor according to claim 1, characterized in that: The primary side clamping device comprises: a second wind box (41), an air inlet hole (42) is formed through the middle of one side of the second wind box (41), the air inlet hole (42) is connected to the air outlet end of the fan (23) through the first pipe (24), both ends of the second wind box (41) are connected to a plate body (43), an air cavity (44) is formed inside the plate body (43), a push plate (46) is connected to a side of the wind cavity (44) close to the second wind box (41) through a second spring (45), the push plate (46) is an L-plate, a main air hole (51) is formed through the inner wall of the wind cavity (44) away from the second wind box (41), and two ends of the wind cavity (44) close to one end of the second wind box (41) are connected to the push plate (46) through the second spring (45). The inner wall of the side is respectively penetrated with a first air hole (52) and a second air hole (53); a top groove (54) is formed at the top of the end of the plate body (43) away from the second air box (41); the top groove (54) is communicated with the air cavity (44); a connecting block (47) is connected to the end of the push plate (46) away from the second air box (41); the connecting block (47) is slidably connected to the top groove (54); the L plate is slidably connected to the top groove (54); the L plate is made of rubber; the first air hole (52) is communicated with a movable part (322) through a third pipe (49); and the second air hole (53) is connected with another movable part (322) through another third pipe (49).

6. The verification and testing device for modular mutual inductor according to claim 1, characterized in that: A detection member (11) is provided on one side of the fan (23). The detection member (11) is electrically connected to each movable part (322) via a wire. The same side of both ends of the side plate (22) is connected to an end plate (21). The side plate (22) and the two end plates (21) form a U-shaped positioning plate. The bottom of the mutual inductor (12) is adapted to the U-shaped positioning plate. The end of the end plate (21) away from the side plate (22) is an arc-shaped plate. The distance between the two arc-shaped plates on one side close to each other gradually shrinks along the axis direction of the side plate (22). The distance between the two arc-shaped plates close to one end of the side plate (22) is smaller than the distance between the two arc-shaped plates away from one end of the side plate (22). The distance between the two arc-shaped plates close to one end of the side plate (22) is the same as the width of the mutual inductor (12). The top of one end plate (21) is connected to the bottom of the support plate (26).

7. The verification and testing device for modular mutual inductor according to claim 2, characterized in that: A plurality of the primary side clamping devices are equidistantly distributed along the axial direction of the second wind box (41), and a plurality of the secondary side clamping devices are equidistantly distributed along the axial direction of the first wind box (31). The elastic coefficient of the first spring (3225) is greater than the elastic coefficient of the second spring (45). The stiffness of the first spring (3225) is greater than the stiffness of the second spring (45). After the fan (23) stops supplying air, the speed at which the first spring (3225) returns to its original state is slower than the speed at which the second spring (45) returns to its original state.

8. A verification and testing method for a modular mutual inductor, characterized in that: A verification and testing device for a modular transformer comprising any one of claims 1 to 7, used to control the verification and testing device to clamp the detection bolt of the transformer (12) once under the action of wind pressure.

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