A magnetic field detection device for a power switch cabinet

Abstract

The application relates to the field of magnetic field detection and discloses a magnetic field detection device for a power switch cabinet, which comprises a machine body and a joint movably connected to the top of the machine body, one end of the joint is fixedly connected with a handle through a transmission line, one end of the handle is movably inserted with a probe, one end of the handle is screwedly connected with a protective sleeve for protecting the probe, the handle comprises a fixed part and a movable part, one end of the fixed part is fixedly connected with a first threaded column, and one end of the movable part is movably connected with a second threaded column; a level-keeping assembly for keeping the probe and a detection piece flush is arranged in the handle, the level-keeping assembly comprises a sliding block fixedly connected to one side of the movable part, a sliding groove matched with the sliding block is arranged on the surface of the fixed part, and a movable cavity is arranged on one side of the movable part; the fixed part is kept horizontal together with the probe and a detection area, so that an included angle is not generated between the probe and the detection area during detection, and the detection accuracy is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of magnetic field detection technology, and more specifically, to a magnetic field detection device for power switchgear. Background Technology

[0002] Power switchgear is a complete set of power distribution equipment used in the power generation, transmission, distribution and power conversion process of power systems to control and protect lines and equipment; it realizes the opening and closing operation of circuits through components such as circuit breakers and contactors, and is equipped with instruments, protection devices and other components for real-time monitoring.

[0003] As a critical piece of equipment in power systems, power switchgear generates power frequency magnetic fields during operation. High-intensity power frequency magnetic fields can lead to problems such as measurement errors in precision instruments, malfunctions in medical equipment, or accidental triggering of relays. Monitoring the magnetic field strength ensures that the equipment complies with electromagnetic compatibility standards, preventing interference with surrounding electronic equipment.

[0004] In actual testing, the angle between the probe and the object being tested affects the accuracy of the results. The larger the angle between the probe tip and the direction of the magnetic field, the greater the measurement error. Therefore, the Hall chip on the probe must be perfectly perpendicular to the magnetic field to ensure accuracy; that is, the probe should be flush with the object being tested. However, because the probe has a cylindrical handle at its end, and for protection, the probe is usually inserted into the center of the handle end, when measuring large objects, the edge of the handle end may come into contact with the object being tested, creating an angle between the probe and the object, thus leading to testing errors. Summary of the Invention

[0005] This invention provides a magnetic field detection device for power switchgear, which solves the technical problem in related technologies where, when detecting larger objects, the angle between the probe and the detection object is caused by the contact of the handle, resulting in errors in the detection results.

[0006] This invention provides a magnetic field detection device for power switchgear, including a body and a connector movably connected to its top. One end of the connector is fixedly connected to a handle via a transmission line, and one end of the handle is movably connected to a probe. One end of the handle is threadedly connected to a protective sleeve for protecting the probe. The handle includes a fixed part and a movable part. One end of the fixed part is fixedly connected to a first threaded post, and one end of the movable part is movably connected to a second threaded post.

[0007] The handle has a leveling component inside that keeps the probe and the detection piece flush. The leveling component includes a slider fixedly connected to one side of the movable part. The surface of the fixed part has a groove that matches the slider. One side of the movable part has a movable cavity. The second threaded post slides through the movable cavity and is connected to the movable cavity by a spring. The probe and one side of the fixed part remain flush.

[0008] As a further optimization of the present invention, the slide extends to the end of the fixed part, and the movable part slides inside the slide to the end of the fixed part and is perpendicular to the fixed part after being moved by the slider. The first threaded column and the second threaded column can be spliced ​​into a complete threaded column and the handle is connected to the protective sleeve by the threaded column.

[0009] As a further optimization of the present invention, a fixing component is provided between the fixing part and the movable part. The fixing component includes a groove formed on the surface of the fixing part, and a suction cup is movably connected inside the groove. A push rod is movably connected inside the fixing part, and one end of the push rod passes through the groove and is fixedly connected to the suction cup. A first push rod for pushing the push rod to move is movably connected inside the fixing part.

[0010] As a further optimization of the present invention, a second push rod is movably connected inside the movable cavity, and a third push rod is movably connected inside the second threaded column, wherein the second push rod penetrates into the interior of the second threaded column and is perpendicular to the third push rod.

[0011] As a further optimization of the present invention, a storage bottle is fixedly connected inside the fixing part, and a pressing nozzle is movably connected to the end of the storage bottle. A conduit is fixedly connected to the nozzle outlet of the pressing nozzle, and one end of the conduit passes through the fixing part and the suction cup. A one-way valve is provided inside the conduit.

[0012] As a further optimization of the present invention, the interior of the movable part is provided with a cooling component. The cooling component includes a receiving cavity with one side of the movable part, and a mounting base is rotatably connected to the interior of the receiving cavity via a rotating shaft. The surface of the mounting base is provided with air holes, and a fan blade is rotatably connected to the interior of the air holes. A motor is fixedly connected to one side of the mounting base, and the output end of the motor passes through the interior of the mounting base and is fixedly connected to a gear. The fan blade has a toothed block on its circumferential side and meshes with the gear through the toothed block.

[0013] As a further optimization of the present invention, a support rod is rotatably connected to one side of the mounting base via a rotating shaft, and a limiting block for overlapping the support rod is fixedly connected inside the receiving cavity.

[0014] As a further optimization of the present invention, the sum of the spring force and the weight of the handle is less than the adsorption force between the suction cup and the detection element. After the second threaded column retracts into the active cavity, the third push rod is aligned with the first push rod.

[0015] As a further optimization of the present invention, the front end of the body is provided with a display screen and operation keys, and the interior of the body is provided with a lithium battery to provide power.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The magnetic field detection device for power switchgear described in this invention keeps the fixed part and the probe together horizontal with the detection area, thereby ensuring that no angle is formed between the probe and the detection area during detection, thus ensuring the accuracy of the detection. Furthermore, after the fixed part and the movable part are combined, the first threaded post and the second threaded post form a complete threaded post. The complete threaded post can be used to connect the handle and the protective sleeve. At the same time, the probe is located in the center area of ​​the handle. When detecting large detection parts, the device keeps the detection part horizontal, reducing detection errors, without affecting the protection of the probe.

[0018] 2. The magnetic field detection device for power switchgear described in this invention uses the adsorption force of a suction cup to fix the fixing part to the detection area, so that the probe remains stationary during the detection process and does not shift, thereby ensuring the accuracy of the probe detection. At the same time, after the first push rod moves, it will squeeze and press the nozzle, and use the pressing nozzle to spray the aqueous solution inside the storage bottle through the conduit onto the inner wall of the suction cup, thereby increasing the adsorption force of the suction cup and further improving the stability of the adsorption between the suction cup and the detection area.

[0019] 3. The magnetic field detection device for power switchgear described in this invention uses a motor to drive a gear to rotate. Since the gear meshes with the fan blades using tooth blocks, it drives the fan blades to rotate synchronously. After the fan blades rotate, airflow is generated. The airflow is blown towards the detection position through the air holes, thereby cooling the detection position and avoiding the influence of excessive temperature on the detection results. This further improves the accuracy of the detection. At the same time, after adjusting the angle of the mounting base, the support rod is rotated by the rotating shaft and the support rod is pressed against the limit block, thereby positioning the mounting base and ensuring the stability of the airflow direction during the cooling process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a view of the probe and handle of the present invention combined;

[0022] Figure 3 This is a schematic diagram of the flattening component structure of the present invention;

[0023] Figure 4 This is a state diagram of the existing detection probe provided by the present invention during detection;

[0024] Figure 5 This is a state diagram of the detection probe during detection in this invention;

[0025] Figure 6 This is a schematic diagram of the fixed component structure of the present invention;

[0026] Figure 7 This is a partial structural diagram of the cooling component of the present invention.

[0027] In the picture:

[0028] 10. Body; 11. Display screen; 12. Operation keys; 13. Connector; 14. Transmission line; 15. Handle; 151. Fixed part; 152. Moving part; 153. First threaded post; 154. Second threaded post; 16. Protective sleeve; 17. Probe;

[0029] 20. Leveling component; 21. Slider; 22. Slide groove; 23. Movable cavity; 24. Spring;

[0030] 30. Fixing component; 31. Groove; 32. Suction cup; 33. Push rod; 34. First push rod; 35. Second push rod; 36. Third push rod; 37. Storage bottle; 38. Press nozzle; 39. Conduit;

[0031] 40. Cooling component; 41. Receiving cavity; 42. Mounting base; 43. Air vent; 44. Fan blade; 45. Motor; 46. Gear; 47. Support rod; 48. Limiting block. Detailed Implementation

[0032] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0033] like Figures 1 to 5As shown, an embodiment of the present invention provides a magnetic field detection device for a power switchgear, comprising a body 10 and a connector 13 movably connected to its top. One end of the connector 13 is fixedly connected to a handle 15 via a transmission line 14, and one end of the handle 15 is movably connected to a probe 17. One end of the handle 15 is threadedly connected to a protective sleeve 16 for protecting the probe 17. The front end of the body 10 is provided with a display screen 11 and operation keys 12, and the body 10 is internally provided with a lithium battery for providing power. The handle 15 includes a fixed part 151 and a movable part 152. One end of the fixed part 151 is fixedly connected to a first threaded post 153, and one end of the movable part 152 is movably connected to a second threaded post 154.

[0034] The handle 15 has a leveling component 20 inside to keep the probe 17 flush with the detection piece. The leveling component 20 includes a slider 21 fixedly connected to one side of the movable part 152. The surface of the fixed part 151 is provided with a groove 22 that matches the slider 21. A movable cavity 23 is provided on one side of the movable part 152. The second threaded post 154 slides through the movable cavity 23 and is connected to the movable cavity 23 by a spring 24. The probe 17 is kept flush with one side of the fixed part 151.

[0035] The slide groove 22 extends to the end of the fixed part 151. The movable part 152 slides inside the slide groove 22 to the end of the fixed part 151 using the slider 21 and is perpendicular to the fixed part 151. The first threaded post 153 and the second threaded post 154 can be spliced ​​into a complete threaded post and the handle 15 is connected to the protective sleeve 16 using the threaded post.

[0036] It should be noted that when performing magnetic field detection inside the switch cabinet, first remove the protective sleeve 16 from the end of the handle 15, then horizontally attach the probe 17 to the area to be detected, and then use the operation key 12 to perform the detection operation. The probe 17 is used to detect the detection area, and the detection results are transmitted to the body 10 through the transmission line 14. The detection results can be observed on the display screen 11. When the object to be detected is too large to allow the probe 17 to be horizontally attached, slide the movable part 152 of the handle 15, so that the movable part 152 slides inside the slide groove 22 using the slider 21. Until the slider 21 slides to the end of the fixed part 151, at this time the movable part 152 is perpendicular to the fixed part 151 and the fixed part 151 is flush with one side of the probe 17. Then the fixed part 151 and the probe 17 are attached together to the detection area, while the second threaded column 154 is compressed and retracted into the interior of the movable cavity 23, so that the fixed part 151 and the probe 17 are kept horizontal with the detection area, thereby ensuring that no angle is formed between the probe 17 and the detection area during detection, ensuring the accuracy of detection. After the fixed part 151 and the movable part 152 are combined, the first threaded column 153 and the second threaded column 154 form a complete threaded column. The complete threaded column can be used to connect the handle 15 and the protective sleeve 16. At the same time, the probe 17 is located in the center area of ​​the handle 15. When detecting large detection parts, it keeps the detection level with the detection part and reduces detection errors without affecting the protection of the probe 17.

[0037] like Figure 2 and Figure 6 As shown, a fixing component 30 is provided between the fixing part 151 and the movable part 152. The fixing component 30 includes a groove 31 formed on the surface of the fixing part 151, and a suction cup 32 is movably connected inside the groove 31. A push rod 33 is movably connected inside the fixing part 151, and one end of the push rod 33 passes through the groove 31 and is fixedly connected to the suction cup 32. A first push rod 34 for pushing the push rod 33 to move is movably connected inside the fixing part 151.

[0038] The interior of the movable cavity 23 is movably connected to a second push rod 35, and the interior of the second threaded column 154 is movably connected to a third push rod 36. The second push rod 35 extends into the interior of the second threaded column 154 and is perpendicular to the third push rod 36.

[0039] A storage bottle 37 is fixedly connected inside the fixing part 151, and a press nozzle 38 is movably connected to the end of the storage bottle 37. A conduit 39 is fixedly connected to the nozzle of the press nozzle 38, and one end of the conduit 39 passes through the fixing part 151 and the suction cup 32. A one-way valve is provided inside the conduit 39.

[0040] The sum of the elastic force of the spring 24 and the weight of the handle 15 is less than the adsorption force between the suction cup 32 and the detection piece, ensuring stable adsorption between the suction cup 32 and the detection area and preventing it from falling off during the detection process. After the second threaded post 154 retracts into the movable cavity 23, the third push rod 36 and the first push rod 34 are aligned.

[0041] It should be noted that magnetic field detection is affected by distance; even slight changes in position can lead to errors in the detection results. Manual detection cannot guarantee that the hand is stationary, causing fluctuations in the distance between the probe 17 and the detection area, resulting in inaccurate results. Furthermore, wear and tear on the probe 17 can damage it, further exacerbating errors. Therefore, during magnetic field detection, the fixing part 151 is first aligned with the probe 17 and the detection area. This process compresses the second threaded post 154, causing it to retract into the movable cavity 23. After the second threaded post 154 retracts into the movable cavity 23, the second push rod 35 and the second threaded post 154 undergo relative displacement. This allows the second push rod 35 to extend into the second threaded post 154 and contact the third push rod 36, causing the third push rod 36 to extend outwards from the second threaded post 154. The third push rod 36 moves and pushes the first push rod 34 to move. The lowered first push rod 34 abuts against the top rod 33 and pushes the top rod 33 to move. After the top rod 33 moves, it pushes the suction cup 32, so that the suction cup 32 is attached to the detection area. With continuous compression, the air inside the suction cup 32 is completely expelled. Thus, the suction force of the suction cup 32 is used to fix the fixing part 151 to the detection area, so that the probe 17 remains stationary during the detection process and does not move, thereby ensuring the accuracy of the probe 17 detection. At the same time, after the first push rod 34 moves, it squeezes and presses the nozzle 38. The press nozzle 38 sprays the aqueous solution inside the storage bottle 37 through the conduit 39 onto the inner wall of the suction cup 32, thereby increasing the suction force of the suction cup 32 and further improving the stability of the adsorption between the suction cup 32 and the detection area.

[0042] like Figure 3 , Figure 5 and Figure 7 As shown, the interior of the movable part 152 is provided with a cooling component 40. The cooling component 40 includes a receiving cavity 41 with one side of the movable part 152. The interior of the receiving cavity 41 is rotatably connected to a mounting base 42 via a rotating shaft. The surface of the mounting base 42 is provided with a vent 43. The interior of the vent 43 is rotatably connected to a fan blade 44. A motor 45 is fixedly connected to one side of the mounting base 42. The output end of the motor 45 passes through the interior of the mounting base 42 and is fixedly connected to a gear 46. The fan blade 44 has a toothed block on its ring side and meshes with the gear 46 through the toothed block.

[0043] A support rod 47 is rotatably connected to one side of the mounting base 42 via a pivot, and a limiting block 48 for overlapping the support rod 47 is fixedly connected inside the receiving cavity 41.

[0044] It should be noted that the electrical components inside the switch cabinet generate high temperatures during operation, which can affect magnetic field detection and lead to errors in the detection results. Therefore, during detection, the mounting base 42 is rotated by a rotating shaft so that the fan blade 44 on the mounting base 42 is aligned with the detection position of the probe 17. Then, the motor 45 drives the gear 46 to rotate. Since the gear 46 meshes with the fan blade 44 through its toothed blocks, it drives the fan blade 44 to rotate synchronously. After the fan blade 44 rotates, it generates airflow, which is blown towards the detection position through the air hole 43, thereby cooling the detection position and preventing the detection results from being affected by excessively high temperatures. This further improves the accuracy of the detection. At the same time, after adjusting the angle of the mounting base 42, the support rod 47 is rotated by a rotating shaft and pressed against the limit block 48 to position the mounting base 42 and ensure the stability of the airflow direction during the cooling process.

[0045] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A magnetic field detection device for power switchgear, comprising a body (10) and a connector (13) movably connected to its top, wherein one end of the connector (13) is fixedly connected to a handle (15) via a transmission line (14), and one end of the handle (15) is movably connected to a probe (17), and one end of the handle (15) is threadedly connected to a protective sleeve (16) for protecting the probe (17), characterized in that: The handle (15) includes a fixed part (151) and a movable part (152). One end of the fixed part (151) is fixedly connected to a first threaded post (153), and one end of the movable part (152) is movably connected to a second threaded post (154). The handle (15) is provided with a leveling component (20) to keep the probe (17) flush with the detection piece. The leveling component (20) includes a slider (21) fixedly connected to one side of the movable part (152). The surface of the fixed part (151) is provided with a groove (22) that matches the slider (21). A movable cavity (23) is provided on one side of the movable part (152). The second threaded post (154) slides through the movable cavity (23) and is connected to the movable cavity (23) by a spring (24). The probe (17) is kept flush with one side of the fixed part (151).

2. The magnetic field detection device for power switchgear according to claim 1, characterized in that: The groove (22) extends to the end of the fixed part (151). The movable part (152) slides inside the groove (22) with the slider (21) to the end of the fixed part (151) and is perpendicular to the fixed part (151). The first threaded post (153) and the second threaded post (154) can be spliced ​​into a complete threaded post and the handle (15) is connected to the protective sleeve (16) by the threaded post.

3. The magnetic field detection device for power switchgear according to claim 1, characterized in that: A fixing component (30) is provided between the fixing part (151) and the movable part (152). The fixing component (30) includes a groove (31) formed on the surface of the fixing part (151), and a suction cup (32) is movably connected inside the groove (31). A push rod (33) is movably connected inside the fixing part (151), and one end of the push rod (33) passes through the groove (31) and is fixedly connected to the suction cup (32). A first push rod (34) for pushing the push rod (33) to move is movably connected inside the fixing part (151).

4. The magnetic field detection device for power switchgear according to claim 3, characterized in that: The second push rod (35) is movably connected inside the active cavity (23), and the third push rod (36) is movably connected inside the second threaded column (154). The second push rod (35) penetrates into the interior of the second threaded column (154) and is perpendicular to the third push rod (36).

5. A magnetic field detection device for power switchgear according to claim 4, characterized in that: The storage bottle (37) is fixedly connected inside the fixed part (151), and the end of the storage bottle (37) is movably connected to the press nozzle (38). The nozzle of the press nozzle (38) is fixedly connected to the conduit (39), and one end of the conduit (39) passes through the fixed part (151) and the suction cup (32). The conduit (39) is provided with a one-way valve inside.

6. A magnetic field detection device for power switchgear according to claim 1, characterized in that: The movable part (152) is provided with a cooling component (40). The cooling component (40) includes a receiving cavity (41) on one side of the movable part (152). The receiving cavity (41) is rotatably connected to a mounting base (42) via a rotating shaft. The surface of the mounting base (42) is provided with a wind hole (43). The inside of the wind hole (43) is rotatably connected to a fan blade (44). A motor (45) is fixedly connected to one side of the mounting base (42). The output end of the motor (45) extends into the inside of the mounting base (42) and is fixedly connected to a gear (46). The fan blade (44) has a toothed block on its ring side and meshes with the gear (46) through the toothed block.

7. A magnetic field detection device for power switchgear according to claim 6, characterized in that: One side of the mounting base (42) is rotatably connected to a support rod (47) via a pivot, and a limiting block (48) for overlapping the support rod (47) is fixedly connected inside the receiving cavity (41).

8. A magnetic field detection device for power switchgear according to claim 5, characterized in that: The sum of the elastic force of the spring (24) and the weight of the handle (15) is less than the adsorption force between the suction cup (32) and the detection piece. After the second threaded column (154) retracts into the active cavity (23), the third push rod (36) and the first push rod (34) are aligned.

9. A magnetic field detection device for power switchgear according to claim 1, characterized in that: The front end of the body (10) is provided with a display screen (11) and operation keys (12), and the interior of the body (10) is provided with a lithium battery that provides power.

Images