Fault diagnosis method and device for electronic transformer

Abstract

The invention discloses a fault diagnosis method and device for an electronic transformer, a clamping device comprises two bottom plates, the two bottom plates are arranged in a bilateral symmetry mode, and a mounting groove is formed in the position, close to the center, of the bottom of the bottom plate located on the left side. When a cable on an electronic transformer needs to be detected, the specification and the size of the cable can be determined firstly, then different detection devices are selected, and as the position between two attaching plates is fixed, when the outer side of the cable is larger than the fixed specification, the two attaching plates can move separately, so that a reciprocating rod moves towards the rear end, a trigger is started, and the cable on the electronic transformer is detected. When the trigger is started, a worker can know that the current cable is abnormal, so that replacement is facilitated, compared with a traditional detection mode, different cables can be detected in a targeted mode, and the situation that the use cost is increased due to the fact that the lossless cable is replaced is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of electronic transformers, and in particular to a fault diagnosis method and device for an electronic transformer. Background Art

[0002] An electronic transformer is an electronic device that converts the alternating voltage of the mains into direct current and then outputs a high-frequency AC voltage through semiconductor switching devices, electronic components and high-frequency transformer windings. Small transformers are a common type of electronic transformers. Small transformers mainly refer to single-phase transformers below 20kV·A and three-phase transformers below 50kV·A. They are characterized by small size, low cost and less wire usage.

[0003] When a small transformer is in an overloaded state for a long time, the cable will generate too much heat due to excessive current. When the heat accumulates, it may cause the cable material to expand and then deform, causing safety problems such as line short circuit or fire. Most of the existing cable detection methods are one-size-fits-all detection, and all cables will be replaced during the detection, which inevitably causes a waste of use costs. Summary of the invention

[0004] To achieve the above object, the present invention provides the following technical solution: a fault diagnosis method for an electronic transformer, comprising the following steps:

[0005] Step 1: First, the staff determines the cable specifications, such as 1.5mm 2 , 2.5mm 2 or 4mm 2 , and adjust different specifications of detection devices according to different specifications of cables;

[0006] Step 2: When the cable specifications are determined, the electronic transformer body can be fixed with a fixing device to prevent movement;

[0007] Step 3: When the electronic transformer body is fixed, the corresponding detection device can be used to detect the outside of the cable. If the current cable is damaged, it can be replaced or repaired.

[0008] Preferably, in step 2, the clamping device includes two base plates, and the two base plates are symmetrically arranged left and right, and a mounting groove is provided at the bottom of the base plate on the left side near the center, and two limit frames are fixedly connected between the two base plates, and the two limit frames are symmetrically arranged front to back, and a limiting groove is provided on the limit frame, and a middle plate is fixedly connected between the two base plates near the center, and a strip groove is provided at the bottom of the middle plate, and there are two L-shaped movable plates at the bottom of the strip groove, and the two L-shaped movable plates are symmetrically arranged front to back, and the tops of the two L-shaped movable plates are fixedly connected to limiting blocks, and the limiting blocks are slidably connected to the strip groove, and the inner cavity of the mounting groove is fixedly connected to a small electric pole, and the power output shaft of the small electric pole is fixedly connected to a movable plate, and two third cranks are hinged on the top of the movable plate, and the two third cranks are hinged to adjacent L-shaped movable plates, and the electronic transformer is located at the top of the middle plate.

[0009] Preferably, connecting plates are attached to the front and rear sides of the median plate near the bottom, and the two connecting plates are fixedly connected to a cross plate on the opposite sides, and the two connecting plates are fixedly connected to two cross bars on the opposite sides, and the two cross bars are symmetrically arranged on the left and right, and the two bottom plates are fixedly connected to fixed blocks on the front and rear sides, and the cross bars pass through adjacent fixed blocks.

[0010] Preferably, one side corresponding to several of the fixed blocks is fixedly connected to a welding plate, and the two L-shaped movable plates are fixedly connected to an opposing plate on the side away from the median plate. The opposing plates are hinged with a first crank at the top near the left and right sides, and the bottom of the first crank is hinged with a second crank near the front and rear sides. The second crank on the side close to the median plate is hinged to the cross plate, and the second crank on the side away from the median plate is hinged to the welding plate.

[0011] Preferably, in step 1, the detection device includes a protective cover, and the inner cavity of the protective cover is provided with two translation plates, the two translation plates are symmetrically arranged on the left and right, and the upper and lower sides of the translation plates are fixedly connected with strip plates near the front side, and several of the strip plates are slidably connected to the inner side walls of the translation plates, and the front sides of the two translation plates are fixedly connected with bonding plates, and the bonding plates pass through the inner cavity of the protective cover.

[0012] Preferably, a sliding groove is provided on one side corresponding to the two translation plates, a trapezoidal block is slidably connected between the two sliding grooves, a reciprocating rod is hinged on the rear side of the trapezoidal block, the rear end of the reciprocating rod passes through the inner cavity of the protective cover, a spring is sleeved on the outer side of the reciprocating rod near the rear end, the front end of the spring is fixedly connected to the inner wall of the protective cover, a mounting plate is sleeved on the outer side of the reciprocating rod near the rear end, the rear end of the spring is fixedly connected to the mounting plate, the front side of the mounting plate is fixedly connected to the protective cover, and a trigger is fixedly connected to the front side of the mounting plate.

[0013] Preferably, the top of the protective cover is fixedly connected to a connecting rod, the top of the connecting rod is provided with a rotating plate, the top of the connecting rod is fixedly connected to the rotating plate, the bottom of the rotating plate is movably connected to a central axis, the bottom end of the central axis is movably connected to a telescopic rod, the bottom end of the telescopic rod is fixedly connected to a slide plate, and the slide plate is slidably connected to a limiting groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention achieves that when it is necessary to detect the cable on the electronic transformer, the specification and size of the cable can be determined first, and then different detection devices can be selected through the mutual cooperation between the detection device, the clamping device and other components. Since the position between the two bonding plates is fixed, when the outer side of the cable is larger than the fixed specification, the two bonding plates can be separated and moved, thereby causing the reciprocating rod to move to the rear end and start the trigger. When the trigger is started, the staff can know that the current cable is abnormal, thereby facilitating replacement. Compared with the traditional detection method, different cables can be detected in a targeted manner to avoid replacing intact cables, which leads to increased use costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 It is a bottom view of the structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the median plate of the component of the present invention;

[0019] Figure 4 This is a top structural plan view of the median plate of the component of the present invention;

[0020] Figure 5 This is a schematic diagram of the telescopic rod structure of the present invention;

[0021] Figure 6 This is a schematic diagram of the protective cover structure of the component of the present invention;

[0022] Figure 7 It is a schematic diagram of the internal structure of the protective cover of the component of the present invention.

[0023] Numbers in the figure: 1. electronic transformer; 2. cable; 3. small pole; 4. bottom plate; 5. L-shaped movable plate; 6. skateboard; 7. telescopic rod; 8. opposite plate; 9. cross plate; 10. fixed block; 11. cross bar; 12. connecting plate; 13. limit frame; 14. middle plate; 15. moving plate; 16. trigger; 17. limit block; 18. first crank; 19. second crank; 20. rotating plate; 21. central axis; 22. connecting rod; 23. protective cover; 24. fitting plate; 25. reciprocating rod; 26. translation plate; 27. trapezoidal block; 28. strip plate; 29. ​​mounting plate; 30. spring; 31. third crank. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0025] See also Figure 1-7 The present invention provides a technical solution: a fault diagnosis method for an electronic transformer, comprising the following steps:

[0026] Step 1: First, the staff determines the specification of cable 2, such as 1.5mm 2 , 2.5mm 2 or 4mm 2 , and adjust the detection devices of different specifications according to the cables 2 of different specifications;

[0027] Step 2: When the specification of the cable 2 is determined, the electronic transformer 1 body can be fixed with a fixing device to prevent movement;

[0028] Step 3: When the electronic transformer 1 body is fixed, the corresponding detection device can be used to detect the outside of the cable 2. If the current cable 2 is damaged, it is replaced or repaired.

[0029] In step 2, the clamping device includes two bottom plates 4, and the two bottom plates 4 are symmetrically arranged on the left and right. A mounting groove is opened near the center of the bottom of the bottom plate 4 on the left side. Two limit frames 13 are fixedly connected between the two bottom plates 4, and the two limit frames 13 are symmetrically arranged front to back. A limit groove is opened on the limit frame 13. A middle plate 14 is fixedly connected near the center between the two bottom plates 4. A strip groove is opened at the bottom of the middle plate 14. There are two L-shaped movable plates 5 at the bottom of the strip groove. The two L-shaped movable plates 5 are symmetrically arranged front to back. The tops of the two L-shaped movable plates 5 are fixedly connected to limit blocks 17, and the limit blocks 17 are slidably connected to the strip grooves. A small electric pole 3 is fixedly connected to the inner cavity of the mounting groove, and a movable plate 15 is fixedly connected to the power output shaft of the small electric pole 3. Two third cranks 31 are hinged on the top of the movable plate 15, and the two third cranks 31 are hinged to the adjacent L-shaped movable plates 5. The sub-transformer 1 is located at the top of the median plate 14, and connecting plates 12 are attached to the front and rear sides of the median plate 14 near the bottom. The two connecting plates 12 are fixedly connected to the opposite sides with a transverse plate 9, and the two connecting plates 12 are fixedly connected to the opposite sides with two transverse bars 11, and the two transverse bars 11 are symmetrically arranged. The two bottom plates 4 are fixedly connected to the front and rear sides with fixed blocks 10, and the transverse bars 11 penetrate the adjacent fixed blocks 10. The corresponding sides of several fixed blocks 10 are fixedly connected with welding plates, and the two L-shaped movable plates 5 are fixedly connected to the opposite plates 8 on the sides away from the median plate 14. The top of the opposite plate 8 is hinged with a first crank 18 near the left and right sides, and the bottom of the first crank 18 is hinged with a second crank 19 near the front and rear sides. The second crank 19 near the median plate 14 is hinged to the transverse plate 9, and the second crank 19 away from the median plate 14 is hinged to the welding plate.

[0030] In step 1, the detection device includes a protective cover 23, and the inner cavity of the protective cover 23 has two translation plates 26, and the two translation plates 26 are symmetrically arranged. The upper and lower sides of the translation plates 26 are fixedly connected to the front side with strip plates 28, and a plurality of strip plates 28 are slidably connected to the inner side wall of the translation plates 26. The front sides of the two translation plates 26 are fixedly connected to the bonding plates 24, and the bonding plates 24 pass through the inner cavity of the protective cover 23. The corresponding sides of the two translation plates 26 are provided with sliding grooves, and a trapezoidal block 27 is slidably connected between the two sliding grooves. A reciprocating rod 25 is hinged on the rear side of the trapezoidal block 27, and the rear end of the reciprocating rod 25 passes through the inner cavity of the protective cover 23. The outer side of the reciprocating rod 25 is close to the inner wall of the translation plate 26. A spring 30 is sleeved at the rear end, and the front end of the spring 30 is fixedly connected to the inner wall of the protective cover 23. A mounting plate 29 is sleeved on the outer side of the reciprocating rod 25 near the rear end. The rear end of the spring 30 is fixedly connected to the mounting plate 29, and the front side of the mounting plate 29 is fixedly connected to the protective cover 23. The front side of the mounting plate 29 is fixedly connected to the trigger 16. The top of the protective cover 23 is fixedly connected to a connecting rod 22, and a rotating plate 20 is provided at the top of the connecting rod 22. The top of the connecting rod 22 is fixedly connected to the rotating plate 20, and the bottom of the rotating plate 20 is movably connected to a central axis 21, and the bottom end of the central axis 21 is movably connected to a telescopic rod 7, and the bottom end of the telescopic rod 7 is fixedly connected to a slide plate 6, and the slide plate 6 is slidably connected to the limit groove.

[0031] A plurality of detection devices are arranged at the bottom of the rotating plate 20 , and the distance between two bonding plates 24 on the detection devices matches the diameter of the cable 2 .

[0032] Working principle: First, the staff puts the electronic transformer 1 between the two connecting plates 12 and starts the small pole 3. When the small pole 3 is started, it can drive the movable plate 15 to move to the left. The movable plate 15 can drive the two L-shaped movable plates 5 to move toward each other through the two third cranks 31. When the two L-shaped movable plates 5 move toward each other, they can drive the two opposing plates 8 to drive the first crank 18 to flip. When the first crank 18 flips, the two connecting plates 12 can be driven to move toward each other through the second crank 19 close to the side of the middle plate 14, so as to clamp the electronic transformer 1. When the specification of the cable 2 is determined, the corresponding detection device can be selected, and the telescopic rod 7 can be moved to drive the detection device to move, so that the two bonding plates 24 are bonded to the outside of the cable 2 and move downward. When the outer size of the cable 2 is larger than the predetermined size, the two bonding plates 24 move back to back, which can drive the trapezoidal block 27 to move forward. When the trapezoidal block 27 moves forward, it can drive the reciprocating rod 25 to move forward, thereby starting the trigger 16.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fault diagnosis method for an electronic transformer, characterized in that: The following steps are involved: Step 1: First, the staff determines the specification of the cable (2), such as 1.5mm 2 , 2.5mm 2 or 4mm 2 , and adjusting detection devices of different specifications according to cables of different specifications (2); Step 2: When the specification of the cable (2) is determined, the electronic transformer (1) body may be fixed with a fixing device to prevent movement; Step 3: When the electronic transformer (1) body is fixed, the outer side of the cable (2) can be inspected using a corresponding inspection device. If the current cable (2) is damaged, it can be replaced or repaired.

2. The fault diagnosis device for an electronic transformer according to claim 1, characterized in that: In step 2, the clamping device comprises two bottom plates (4), and the two bottom plates (4) are symmetrically arranged on the left and right, and a mounting groove is provided at the bottom of the bottom plate (4) on the left side near the center, and two limit frames (13) are fixedly connected between the two bottom plates (4), and the two limit frames (13) are symmetrically arranged front to back, and limit grooves are provided on the limit frames (13), and a middle plate (14) is fixedly connected between the two bottom plates (4) near the center, and a strip groove is provided at the bottom of the middle plate (14), and two L-shaped movable plates ( 5), the two L-shaped movable plates (5) are symmetrically arranged front and back, the tops of the two L-shaped movable plates (5) are fixedly connected to limit blocks (17), the limit blocks (17) are slidably connected to the strip grooves, the inner cavity of the mounting grooves is fixedly connected to a small electric pole (3), the power output shaft of the small electric pole (3) is fixedly connected to a movable plate (15), the top of the movable plate (15) is hinged with two third cranks (31), the two third cranks (31) are hinged to adjacent L-shaped movable plates (5), and the electronic transformer (1) is located at the top of the middle plate (14).

3. The fault diagnosis device for an electronic transformer according to claim 1, characterized in that: The middle plate (14) is fitted with connecting plates (12) on both sides near the bottom, and the two connecting plates (12) are fixedly connected to a transverse plate (9) on the opposite sides. The two connecting plates (12) are fixedly connected to two transverse bars (11) on the opposite sides, and the two transverse bars (11) are symmetrically arranged. The two bottom plates (4) are fixedly connected to fixed blocks (10) on both sides, and the transverse bars (11) pass through adjacent fixed blocks (10).

4. The fault diagnosis device for an electronic transformer according to claim 3, characterized in that: The corresponding sides of the plurality of fixed blocks (10) are fixedly connected to a welding plate, and the sides of the two L-shaped movable plates (5) away from the middle plate (14) are fixedly connected to an opposing plate (8), and the top of the opposing plate (8) is hinged with a first crank (18) near the left and right sides, and the bottom of the first crank (18) is hinged with a second crank (19) near the front and rear sides, and the second crank (19) on the side close to the middle plate (14) is hinged to the cross plate (9), and the second crank (19) on the side away from the middle plate (14) is hinged to the welding plate.

5. The fault diagnosis device for an electronic transformer according to claim 1, characterized in that: In step 1, the detection device includes a protective cover (23), and the inner cavity of the protective cover (23) has two translation plates (26), the two translation plates (26) are symmetrically arranged on the left and right, and the upper and lower sides of the translation plates (26) are fixedly connected with strip plates (28) near the front side, and several of the strip plates (28) are slidably connected to the inner wall of the translation plate (26), and the front sides of the two translation plates (26) are fixedly connected with bonding plates (24), and the bonding plates (24) pass through the inner cavity of the protective cover (23).

6. The fault diagnosis device for an electronic transformer according to claim 5, characterized in that: A slide groove is provided on one side corresponding to the two translation plates (26), and a trapezoidal block (27) is slidably connected between the two slide grooves. A reciprocating rod (25) is hingedly connected to the rear side of the trapezoidal block (27), and the rear end of the reciprocating rod (25) passes through the inner cavity of the protective cover (23). A spring (30) is sleeved on the outer side of the reciprocating rod (25) near the rear end, and the front end of the spring (30) is fixedly connected to the inner wall of the protective cover (23). A mounting plate (29) is sleeved on the outer side of the reciprocating rod (25) near the rear end, and the rear end of the spring (30) is fixedly connected to the mounting plate (29). The front side of the mounting plate (29) is fixedly connected to the protective cover (23), and the front side of the mounting plate (29) is fixedly connected to the trigger (16).

7. The fault diagnosis device for an electronic transformer according to claim 6, characterized in that: The top of the protective cover (23) is fixedly connected to a connecting rod (22), the top of the connecting rod (22) is provided with a rotating plate (20), the top of the connecting rod (22) is fixedly connected to the rotating plate (20), the bottom of the rotating plate (20) is movably connected to a central axis (21), the bottom of the central axis (21) is movably connected to a telescopic rod (7), the bottom of the telescopic rod (7) is fixedly connected to a slide plate (6), and the slide plate (6) is slidably connected to a limiting groove.

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