Ultrasonic partial discharge test device and test method for magnetic type combined electrical apparatus set

Abstract

The invention provides an ultrasonic partial discharge test device and test method for a magnetic type combined electrical apparatus set, and relates to the technical field of operation and maintenance of high-voltage equipment, and the device comprises an ultrasonic sensor which is used for carrying out an ultrasonic partial discharge test on the combined electrical apparatus set; the magnetic attraction assembly is used for being magnetically attracted and fixed on a detection point of a complete-set combined electric appliance and fixing the ultrasonic sensor on the detection point; the detection base station is connected with the ultrasonic sensor and the magnetic suction module and is used for bearing the ultrasonic sensor and the magnetic suction module; the telescopic rod is connected with the detection shield and used for adjusting the distance between the ultrasonic sensor and the operator and the distance between the magnetic suction module and the operator through self stretching; by adjusting the distance between the ultrasonic sensor and an operator, measurement can be carried out without climbing to a high place when a high measuring point is measured, the high measuring point is convenient to measure, the ultrasonic sensor is magnetically attracted and fixed on the measuring point, and the stability and efficiency of detection are ensured.

Description

Technical Field

[0001] The patent of this invention relates to the field of high-voltage equipment operation and maintenance technology, specifically, to a magnetic-type complete set of combined electrical appliances ultrasonic partial discharge test device and test method. Background Art

[0002] When conducting live inspections on GIS equipment in operation at substations, ultrasonic partial discharge detection is currently a more commonly used detection technology. When an internal discharge fault occurs during equipment operation, partial discharge detection can more accurately detect the fault point or fault range. Ultrasonic partial discharge detection is also a routine and important test item for live inspections.

[0003] Currently, there are many types of partial discharge detectors available on the domestic and international markets, but all require manual pressure to secure the probe, making it extremely inconvenient when measuring high-altitude points. Furthermore, due to the instability of manual pressure, a single point often requires multiple measurements. Prolonged pressure can also cause fatigue, further impacting detection stability and efficiency. Measuring high points requires the use of an insulated ladder or stand to reach the height, requiring the coordination of multiple personnel. Furthermore, the movement of the ladder and the time it takes for operators to ascend and descend the ladder can be time-consuming, severely impacting the efficiency of combined electrical and ultrasonic partial discharge testing. Summary of the Invention

[0004] In order to solve the deficiencies in the prior art, the present invention provides a magnetic suction type complete set of combined electrical appliances ultrasonic partial discharge test device and test method.

[0005] The present invention adopts the following technical solutions.

[0006] The first aspect of the present invention provides a magnetic type complete set of combined electrical appliances ultrasonic partial discharge test device, comprising:

[0007] Ultrasonic sensor, used to perform ultrasonic partial discharge test on complete sets of combined electrical appliances;

[0008] The magnetic component is used to fix the ultrasonic sensor on the detection point of the complete set of combined electrical appliances by magnetic attraction;

[0009] A detection base, connected to the ultrasonic sensor and the magnetic module, and used to carry the ultrasonic sensor and the magnetic module;

[0010] The telescopic rod is connected to the detection shield and is used to adjust the distance between the ultrasonic sensor, the magnetic module and the operator through its own extension and contraction.

[0011] Preferably, the magnetic attraction assembly comprises an electromagnet module and a first mounting assembly, the first mounting assembly comprises a support plate, a movable shaft and a magnet fixing ring connected with the electromagnet module, the magnet fixing ring is rotatably connected with the support plate through the movable shaft arranged on the surface, and the support plate is arranged on the detection base.

[0012] Preferably, when the magnetic attraction assembly is not magnetically attracted and fixed at the detection point, the distance between the electromagnet module and the detection base away from the end face of the detection base is less than the distance between the ultrasonic sensor and the detection base away from the end face of the detection base.

[0013] Preferably, two groups of magnetic attraction assemblies are arranged on the detection base and located on the two sides of the ultrasonic sensor respectively, and each group of the magnetic attraction assembly comprises two support plates.

[0014] Preferably, the electromagnet module is a power-on demagnetization type electromagnet, which loses magnetism when powered on and has magnetism when powered off.

[0015] Preferably, a control module connected with the electromagnet module through a power line is arranged in the detection base, a control switch for sending instructions to the control module is arranged on the telescopic rod, whether the electromagnet module has magnetism is controlled by sending instructions to the control module through the control switch, a power supply is arranged in the detection base, and the control module is connected with the power supply through a wiring terminal.

[0016] Preferably, the ultrasonic sensor is connected with the detection base through a second mounting assembly, the second mounting assembly comprises a sensor fixing seat, a guide block, a guide shaft and a positioning spring, the sensor fixing seat is connected with the ultrasonic sensor, the guide shaft is arranged on the surface of the sensor, the guide block is arranged on the detection base and the guide block is internally provided with a guide groove, the guide shaft is movably arranged in the guide groove, and the two ends of the positioning spring are respectively connected with the sensor fixing seat and the detection base.

[0017] Preferably, the telescopic rod and the detection base are connected through a connecting assembly, the connecting assembly comprises a rotating shaft and a joint connected with each other, the rotating shaft is connected with the detection base through a fixing bolt, the joint comprises a first connecting rod and a second connecting rod rotatably connected with each other, the first connecting rod is connected with the detection base, and the second connecting rod is connected with the telescopic rod.

[0018] Preferably, an information acquisition and transmission module connected with the ultrasonic sensor is arranged on the telescopic rod, which is used for acquiring the detection signal emitted by the ultrasonic sensor and transmitting the detection signal to a remote receiving and viewing module.

[0019] The second aspect of the present application provides a complete set of ultrasonic partial discharge test method of electric appliance, which is realized based on the test device of the first aspect, and comprises the following steps:

[0020] The distance between the ultrasonic sensor and the operator is adjusted by the telescopic rod, the ultrasonic sensor is magnetically fixed to the detection point of the complete combination electrical appliance by the magnetic attraction component, and the ultrasonic partial discharge test of the complete combination electrical appliance is performed at the detection point by the ultrasonic sensor.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] The distance between the ultrasonic sensor and the operator can be adjusted by the telescopic rod. When measuring high measuring points, there is no need to climb up to the height with the help of an insulating ladder or insulating rack to carry out measurement. There is no need for multiple people to cooperate, and there is no need to waste time moving ladders and operators climbing up and down. This ensures the efficiency of the combined electrical ultrasonic partial discharge detection and facilitates the measurement of high measuring points. The ultrasonic sensor is fixed to the detection point of the complete set of combined electrical appliances through magnetic attraction components, and no manual pressing is required. The pressing force is stable, and one measuring point does not need to be measured multiple times. There is no fatigue caused by long-term pressing, and the stability and efficiency of the detection are guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a first stereoscopic schematic diagram of a magnetic type complete set of combined electrical appliances ultrasonic partial discharge test device of the present invention;

[0024] Figure 2 This is a second perspective schematic diagram of a magnetic type complete set of combined electrical appliances ultrasonic partial discharge test device of the present invention;

[0025] Figure 3 This is a first explosion diagram of a magnetic type complete set of combined electrical appliances ultrasonic partial discharge test device of the present invention;

[0026] Figure 4 This is a second explosion diagram of a magnetic type complete set of combined electrical appliances ultrasonic partial discharge test device of the present invention;

[0027] Figure 5 This is a third explosion diagram of a magnetic type complete set of combined electrical appliances ultrasonic partial discharge test device of the present invention;

[0028] Among them, 1. telescopic rod; 2. control switch; 3. information acquisition and transmission module; 4. connector; 5. detection base; 6. rotating shaft; 7. detection shield; 8. power supply; 9. positioning spring; 10. magnet fixing ring; 11. electromagnet module; 12. sensor fixing seat; 13. ultrasonic sensor; 14. guide shaft; 15. guide block; 16. support plate; 17. control module; 18. terminal block; 19. movable shaft; 20. detection base; 21. fixing bolt. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described in this application are only part of the embodiments of the present invention, not all of them. Based on the spirit of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] like Figures 1-5 As shown, embodiment 1 of the present invention provides a magnetic type complete set of combined electrical appliances ultrasonic partial discharge test device, comprising:

[0031] Ultrasonic sensor 13, used for conducting ultrasonic partial discharge test on complete combination electrical equipment;

[0032] A magnetic component, used for magnetically fixing to a detection point of the complete combination electrical appliance, and fixing the ultrasonic sensor 13 to the detection point;

[0033] The detection base 5 is connected to the ultrasonic sensor 13 and the magnetic module, and is used to carry the ultrasonic sensor 13 and the magnetic module;

[0034] The telescopic rod 1 is connected to the detection shield 7 and is used to adjust the distance between the ultrasonic sensor 13, the magnetic module and the operator through its own telescopic movement.

[0035] Preferably but not restrictively, the magnetic attraction component includes: an electromagnet module 11 and a first mounting component, the first mounting component includes: a support plate 16, a movable shaft 19 and a magnet fixing ring 10 connected to the electromagnet module 11, the magnet fixing ring 10 is rotatably connected to the support plate 16 through a movable shaft 19 set on the surface, and the support plate 16 is set on the detection base 5.

[0036] Further preferably but not restrictively, when the magnetic assembly is not magnetically fixed at the detection point, the distance between the electromagnet module 11 and the end surface of the detection base 5 is smaller than the distance between the ultrasonic sensor 13 and the end surface of the detection base 5.

[0037] Further preferably but not restrictively, two groups of magnetic components are provided on the detection base 5 , respectively located on both sides of the ultrasonic sensor 13 , and each group of the magnetic components includes two support plates 16 .

[0038] Further preferably but not restrictively, the electromagnet module 11 is an electromagnet that loses magnetism when powered on, and has magnetism when powered off.

[0039] Further preferably but not limitedly, the detection base 5 is provided with a control module 17 connected to the electromagnet module 11 through the power supply 8, the telescopic rod 1 is provided with a control switch 2 for sending instructions to the control module 17, the control switch 2 sends instructions to the control module 17 to control whether the electromagnet module 11 has magnetism, the detection base 5 is provided with the power supply 8, and the control module 17 is connected to the power supply 8 through the wiring terminal 18.

[0040] Preferably but not limitedly, the ultrasonic sensor 13 is connected to the detection base 5 through a second mounting assembly, the second mounting assembly includes a sensor fixing seat 12, a guide block 15, a guide shaft 14 and a positioning spring 9, the sensor fixing seat 12 is connected to the ultrasonic sensor 13, the sensor surface is provided with the guide shaft 14, the guide block 15 is arranged on the detection base 5 and the guide groove is arranged in the guide block 15, the guide shaft 14 is movably arranged in the guide groove, and the two ends of the positioning spring 9 are respectively connected to the sensor fixing seat 12 and the detection base 5.

[0041] Further preferably but not limitedly, two guide blocks 15 are arranged on the detection base 5.

[0042] The guide shaft 14 can slide and rotate in the guide groove.

[0043] Preferably but not limitedly, the telescopic rod 1 and the detection base 5 are connected through a connecting assembly, the connecting assembly includes a rotating shaft 6 and a joint 4 connected to each other, the rotating shaft 6 is connected to the detection base 5 through a fixing bolt 21, the joint 4 includes a first connecting rod and a second connecting rod rotatably connected to each other, the first connecting rod is connected to the detection base 5, and the second connecting rod is connected to the telescopic rod 1, preferably, the included angle between the extension directions of the first connecting rod and the second connecting rod is ninety degrees.

[0044] The rotating shaft 6 can drive the detection base 5 to rotate 360 degrees along the joint 4, and the first connecting rod can drive the detection base 5 to rotate 360 degrees along the second joint, thereby forming a wide detection range.

[0045] Preferably but not limitedly, the telescopic rod 1 is provided with an information acquisition and transmission module 3 connected to the ultrasonic sensor 13, for acquiring the detection signal emitted by the ultrasonic sensor 13 and transmitting it to a remote receiving and viewing module, which can be a mobile phone APP end or a back end.

[0046] Further preferably but not limitedly, the detection base 5 comprises a detection base 20 and a detection cover 7 connected to each other by fixing bolts 21, the support plate 16 and the guide block 15 are arranged on the detection base 20, the positioning spring 9 is connected with the detection base 20, the connecting assembly is connected with the detection cover 7, and the power supply 8 and the control module 17 are arranged in a closed space formed by the detection base 20 and the detection cover 7.

[0047] Embodiment 2 of the present application provides a complete set of combination electric appliance ultrasonic partial discharge test method, which is realized based on the test device described in embodiment 1, and comprises the following steps:

[0048] The distance between the ultrasonic sensor 13 and the operator is adjusted by the telescopic rod 11, the ultrasonic sensor 13 is magnetically attracted and fixed to the detection point of the complete set of combination electric appliance by the magnetic attraction assembly, and the ultrasonic partial discharge test of the complete set of combination electric appliance is carried out at the detection point by the ultrasonic sensor 13.

[0049] Specifically, according to the height of the detection point, the operator adjusts the distance between the ultrasonic sensor 13, the magnetic module and the operator by extending or shortening the telescopic rod 1, and then adjusts the detection height, which is usually zero to four and a half meters, avoiding the inefficiency of the detection personnel climbing up and adjusting the detection point, ensuring work safety, and sending an instruction to the control module 17 through the control switch 2 to control the electromagnet module 11 to cut off the power. The electromagnet module 11 is magnetic, and by moving the telescopic rod 1, adjusting the rotating shaft 6 and the joint 4, the ultrasonic sensor 13 and the electromagnet module 11 are aligned with the detection point of the complete set of combination electrical appliances and accurately contacted with it. Because when the magnetic suction component is not magnetically fixed at the detection point, the distance between the end face of the electromagnet module 11 away from the detection base 5 and the detection base 5 is smaller than the distance between the end face of the ultrasonic sensor 13 away from the detection base 5 and the detection base 5, after the electromagnet module 11 is magnetically fixed to the detection point, the ultrasonic sensor 13 drives the sensor fixing seat 12 along The guide groove is close to the detection base 5, the positioning spring 9 is compressed and applies force to the sensor fixing seat 12, so that the ultrasonic sensor 13 is firmly fixed on the detection point. Since the magnet fixing ring 10 can drive the electromagnet module 11 to rotate relative to the support plate 16, the electromagnet module 11 can automatically fit the irregular GIS surface by rotating according to the curvature of the metal, ensuring the effect of magnetic fixation, reducing the error caused by manual pressing, and making the detection data more accurate. The ultrasonic partial discharge test of the complete set of combined electrical appliances is carried out by the ultrasonic sensor 13. The ultrasonic sensor 13 sends the detection signal to the information collection and transmission module 3, and the information collection and transmission module 3 transmits the detection signal to the remote receiving and viewing module. After completing the relevant detection, the control switch 2 sends an instruction to the control module 17 to control the electromagnet module 11 to be energized, the electromagnet module 11 is demagnetized, and the telescopic rod 1 is moved to make the ultrasonic sensor 13 leave the detection point. The present invention can realize fast and efficient partial discharge detection of GIS equipment at different heights, angles and curvatures in a narrow GIS space, thereby solving the problems of manual climbing danger, time-consuming and labor-intensive, and low detection efficiency. It has a simple structure, low processing cost, and is suitable for large-scale promotion.

[0050] The beneficial effect of the present invention is that, compared with the prior art,

[0051] The distance between the ultrasonic sensor and the operator can be adjusted by the telescopic rod. When measuring high measuring points, there is no need to climb up to the height with the help of an insulating ladder or insulating rack to carry out measurement. There is no need for multiple people to cooperate, and there is no need to waste time moving ladders and operators climbing up and down. This ensures the efficiency of the combined electrical ultrasonic partial discharge detection and facilitates the measurement of high measuring points. The ultrasonic sensor is fixed to the detection point of the complete set of combined electrical appliances through magnetic attraction components, and no manual pressing is required. The pressing force is stable, and one measuring point does not need to be measured multiple times. There is no fatigue caused by long-term pressing, and the stability and efficiency of the detection are guaranteed.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A magnetic type complete set of combined electrical appliances ultrasonic partial discharge test device, characterized in that: include: An ultrasonic sensor (13) is used to perform an ultrasonic partial discharge test on a complete set of combined electrical appliances; A magnetic attraction component is used for magnetically fixing the complete set of combined electrical appliances on a detection point, and fixing the ultrasonic sensor (13) on the detection point; A detection base (5) is connected to the ultrasonic sensor (13) and the magnetic attraction module, and is used to carry the ultrasonic sensor (13) and the magnetic attraction module; The telescopic rod (1) is connected to the detection shield (7) and is used to adjust the distance between the ultrasonic sensor (13), the magnetic module and the operator through its own telescopic movement.

2. The magnetic type complete set of combined electrical appliances ultrasonic partial discharge test device according to claim 1, characterized in that: The magnetic attraction assembly comprises: an electromagnet module (11) and a first mounting assembly, wherein the first mounting assembly comprises: a support plate (16), a movable shaft (19) and a magnet fixing ring (10) connected to the electromagnet module (11), wherein the magnet fixing ring (10) is rotatably connected to the support plate (16) via a movable shaft (19) arranged on the surface, and the support plate (16) is arranged on a detection base (5).

3. The magnetic type complete set of combined electrical appliances ultrasonic partial discharge test device according to claim 2, characterized in that: When the magnetic attraction component is not magnetically fixed at the detection point, the distance between the electromagnet module (11) and the end surface of the detection base (5) is smaller than the distance between the ultrasonic sensor (13) and the end surface of the detection base (5).

4. The magnetic type complete set of combined electrical appliances ultrasonic partial discharge test device according to claim 2, characterized in that: Two groups of magnetic components are provided on the detection base (5), respectively located on both sides of the ultrasonic sensor (13), and each group of the magnetic components includes two support plates (16).

5. The magnetic type complete set of combined electrical appliances ultrasonic partial discharge test device according to claim 2, characterized in that: The electromagnet module (11) is an electromagnet that loses magnetism when powered on and retains magnetism when powered off.

6. The magnetic type complete set of combined electrical appliances ultrasonic partial discharge test device according to claim 2, characterized in that: A control module (17) connected to the electromagnet module (11) via a power supply (8) line is provided in the detection base (5); a control switch (2) for sending instructions to the control module (17) is provided on the telescopic rod (1); an instruction is sent to the control module (17) via the control switch (2) to control whether the electromagnet module (11) is magnetic; a power supply (8) is provided in the detection base (5); and the control module (17) is connected to the power supply (8) via a wiring terminal (18).

7. The magnetic type complete set of combined electrical appliances ultrasonic partial discharge test device according to claim 1, characterized in that: The ultrasonic sensor (13) is connected to the detection base (5) through a second mounting assembly, the second mounting assembly comprising a sensor fixing seat (12), a guide block (15), a guide shaft (14) and a positioning spring (9), the sensor fixing seat (12) is connected to the ultrasonic sensor (13), the guide shaft (14) is provided on the surface of the sensor, the guide block (15) is provided on the detection base (5) and a guide groove is provided inside the guide block (15), the guide shaft (14) is movably provided in the guide groove, and the two ends of the positioning spring (9) are respectively connected to the sensor fixing seat (12) and the detection base (5).

8. The magnetic type complete set of combined electrical appliances ultrasonic partial discharge test device according to claim 1, characterized in that: The telescopic rod (1) and the detection base (5) are connected by providing a connecting assembly, wherein the connecting assembly comprises a rotating shaft (6) and a joint (4) connected to each other, the rotating shaft (6) being connected to the detection base (5) via a fixing bolt (21), and the joint (4) comprising a first connecting rod and a second connecting rod rotatably connected to each other, the first connecting rod being connected to the detection base (5), and the second connecting rod being connected to the telescopic rod (1).

9. The magnetic type complete set of combined electrical appliances ultrasonic partial discharge test device according to claim 1, characterized in that: The telescopic rod (1) is provided with an information collection and transmission module (3) connected to the generating sensor, which is used to collect the detection signal emitted by the ultrasonic sensor (13) and transmit it to the remote receiving and viewing module.

10. A complete set of ultrasonic partial discharge test methods for combined electrical appliances, implemented based on the test device according to any one of claims 1 to 9, characterized in that: include: The distance between the ultrasonic sensor (13) and the operator is adjusted by a telescopic rod (11), the ultrasonic sensor (13) is magnetically fixed to a detection point of the complete set of combined electrical appliances by a magnetic attraction component, and an ultrasonic partial discharge test is performed on the complete set of combined electrical appliances at the detection point by the ultrasonic sensor (13).

Images