A passive partial discharge temperature two-in-one sensor

Abstract

The present invention relates to the field of power equipment monitoring technology, and specifically to a passive partial discharge temperature two-in-one sensor, including a housing, and also including a monitoring component, including a circuit board installed in the housing, on which an ultrasonic probe, an antenna and a temperature probe are provided; a positioning component, including a positioning frame installed in the housing, two movable blocks are movably installed with adsorption plates at one end away from each other, and when the adsorption plates are parallel to the positioning frame, the adsorption plates are received in a third mounting hole, and the two adsorption plates are rotated to make them fixedly connected at one end away from each other in a quasi-circular ring shape. By arranging an ultrasonic probe and a temperature probe on the circuit board, the temperature on the surface or contact of a high-voltage charged object and the ultrasonic signal generated by the partial discharge of the electrical equipment can be measured, and a positioning component is arranged in the housing, so that not only the entire device can be installed on the flat outside of the device, but also it can be fixed on the cable, which is convenient for the use and installation of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment monitoring, and in particular to a passive partial discharge temperature two-in-one sensor. Background Art

[0002] In the high-voltage power transmission and distribution system, power equipment is an important part of the high-voltage power transmission and distribution system. The health of power equipment is related to the safety and stability of power supply. Long-term overload operation or excessive current carrying capacity causing local overtemperature and partial discharge of equipment are the main causes of power equipment failure.

[0003] The existing method is to first open a mounting hole on the temperature measuring device or component, and then insert the detection head of the wireless temperature sensor through the mounting hole to detect the temperature. The existing wireless temperature sensor and the mounting hole on the device or component are mostly fixed by means of threads or flanges, which makes the installation and disassembly method more cumbersome, especially in some narrow spaces or when the mounting hole cannot be directly viewed, which further increases the difficulty of installing and disassembling the wireless temperature sensor. The existing wireless temperature sensor does not have an anti-loosening structure. If the device or component shakes or trembles during use, it will directly cause the wireless temperature sensor to loosen with the device or component. In severe cases, it will directly cause the wireless temperature sensor to fall, thereby affecting the normal temperature monitoring of the wireless temperature sensor. Secondly, the existing wireless temperature sensor has a single function and can only judge whether the device is normal based on the temperature. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a passive partial discharge temperature two-in-one sensor, which can effectively solve the problems of difficult installation and single function in the prior art.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a passive partial discharge temperature two-in-one sensor, comprising a housing and:

[0007] A monitoring component, comprising a circuit board installed in a housing, wherein the circuit board is provided with an ultrasonic probe, an antenna and a temperature probe;

[0008] The positioning assembly includes a positioning frame installed in the shell, and the positioning frame is located between the circuit board and the inner wall of the shell, the positioning frame is provided with two fixing frames, and the shell is provided with a third mounting hole, two movable blocks are slidably installed in the positioning frame, and adsorption plates are movably installed at one end of the two movable blocks away from each other, when the adsorption plates are parallel to the positioning frame, the adsorption plates are received in the third mounting hole, and the two adsorption plates are fixedly connected to form a quasi-circular shape by rotating the two adsorption plates so that their ends away from each other are fixedly connected, and a reinforcement plate is movably installed in the positioning frame, and when the adsorption plates are away from the positioning frame, the reinforcement plate extends out of the positioning frame.

[0009] Furthermore, a power supply component is provided on the positioning frame, and the power supply component is a magnetic induction coil or a battery. A rear cover is provided on the back of the shell, and a shielding cover is provided on the rear cover.

[0010] Furthermore, a first sliding rod is rotatably installed on the outer wall of the two movable blocks away from each other, a sliding rack is slidably installed on the first sliding rod, a limiting block is fixedly installed on one end of the adsorption plate close to the movable block, a second sliding rod adapted to the sliding rack is provided on the limiting block, and a limiting groove adapted to the limiting block is opened on the side wall of the fixed rack.

[0011] Furthermore, both adsorption plates are provided with an electromagnet, the electromagnet is externally connected with an electric plug, and the male plug extends to the limit block, and the limit groove is provided with a female socket adapted to the electric plug.

[0012] Furthermore, a reinforcement hole adapted to the reinforcement plate is opened on the outer wall of the fixing frame, an elastic rod is provided between the bottom wall of the reinforcement plate and the inner wall of the fixing frame, a first wedge block is fixedly installed on the bottom wall of the fixing frame, a fixing rod is fixedly installed on the outer wall of one side where the two movable blocks are close to each other, and a second wedge block is provided on each of the two fixing rods.

[0013] Furthermore, the two adsorption plates are slidably installed with connecting blocks on one side close to the positioning frame, the two connecting blocks are provided with storage grooves, hinges are rotatably installed in the two storage grooves, connecting plates are movably installed on the two hinges, and connecting holes are provided on the two connecting plates, and one of the connecting holes is provided with a bolt and a nut.

[0014] Furthermore, the positioning frame is provided with a cannula, the cannula is connected to a suction cup, a piston rod is provided in the cannula, a first airbag is fixedly installed on the end of the piston rod away from the cannula, a second airbag is fixedly installed on the positioning frame, a first extrusion frame is provided on the adsorption plate, the adsorption plate squeezes the second airbag when sliding, and a first connecting tube is connected between the first airbag and the second airbag.

[0015] Furthermore, two extrusion plates are rotatably installed on the reinforcement plate, a fourth airbag is provided between the extrusion plate and the reinforcement plate, a third airbag is provided in the connecting block, and a second connecting tube is connected between the third airbag and the fourth airbag, a second extrusion frame is provided on the hinge, and the second extrusion frame compresses the third airbag when the hinge moves toward the outside of the connecting block.

[0016] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0017] By setting up ultrasonic probes and temperature probes on the circuit board, the temperature of the surface or contact of high-voltage charged objects and the ultrasonic signals generated by partial discharge of electrical equipment can be measured. A positioning component is set in the casing, which not only allows the entire device to be installed on the flat outside of the device, but also allows it to be fixed on the cable, making it convenient for the use and installation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is an overall schematic diagram of the present invention;

[0020] Figure 2 An exploded view of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the circuit board part;

[0022] Figure 4 It is a structural schematic diagram of the positioning component part;

[0023] Figure 5 is a cross-sectional view of the fixed box portion;

[0024] Figure 6 for Figure 5 A magnified view of the structure of part A;

[0025] Figure 7 It is a schematic structural diagram of the limit block part in the present invention;

[0026] Figure 8 It is a structural schematic diagram of the reinforcement plate part in the present invention;

[0027] Fig. 9 It is a state diagram of the adsorption plate rotating in the present invention;

[0028] Fig.10 It is a state diagram of the piston rod in the present invention when it moves;

[0029] Fig.11 It is a schematic structural diagram of the connecting plate part in the present invention.

[0030] The numbers in the figure represent: 1. shell; 2. circuit board; 3. ultrasonic probe; 4. antenna; 5. temperature probe; 6. shielding cover; 7. back cover; 8. first mounting hole; 9. positioning frame; 10. intubation tube; 11. suction cup; 12. movable block; 13. slide; 14. adsorption plate; 15. first extrusion frame; 16. connecting block; 17. hinge; 18. connecting plate; 19. piston rod; 20. first air bag; 21. second air bag; 22. fixing frame; 23. reinforcement plate; 24. elastic rod; 25. first wedge block; 26. fixing rod; 27. second wedge block; 28. limit block; 29. ​​limit groove; 30. power supply assembly; 31. second mounting hole; 32. third mounting hole; 33. third air bag; 34. second extrusion frame; 35. second connecting pipe; 36. fourth air bag; 37. extrusion plate. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, 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.

[0032] The present invention will be further described below in conjunction with the embodiments.

[0033] Example: Reference Figure 1-Figure 11 A passive partial discharge temperature two-in-one sensor includes a housing 1 and a monitoring component, including a circuit board 2 installed in the housing 1, on which an ultrasonic probe 3, an antenna 4 and a temperature probe 5 are arranged, a positioning frame 9 is provided with a power supply component 30, and the power supply component 30 is a magnetic induction coil or a battery, and a back cover 7 is provided on the back of the housing 1, and a shielding cover 6 is provided on the back cover 7. A first mounting hole 8 adapted to the ultrasonic probe 3 is opened on the housing 1, and of course, the sealing after installation needs to be ensured to ensure the service life of the sensor.

[0034] An antenna 4 is provided on the circuit board 2 to facilitate the staff to obtain monitoring data in real time. In addition to the temperature probe 5, the circuit board 2 is also provided with an ultrasonic probe 3 for measuring ultrasonic signals generated by partial discharge of electrical equipment.

[0035]

[0036] The ultrasonic detection principle can be used to couple the ultrasonic signal generated by the partial discharge of high-voltage electrical equipment, and output basic parameters such as discharge amount, discharge times, and temperature. It adopts ultra-low power design, micro-electromagnetic energy collection technology, and radio frequency communication. It has the characteristics of green environmental protection, maintenance-free, complete electrical isolation, easy installation, strong anti-interference ability, reliable operation, and compact size. It can well solve the temperature measurement problem under high altitude and high voltage conditions.

[0037] Different power supply components 30 can be selected according to different use environments. When the monitored object is an electrical cabinet or other equipment, a battery needs to be added inside. When the monitored object is a cable, there is no need to add a battery inside. An induction coil is added inside to convert the magnetic field energy into electrical energy to power the circuit board 2 through micro-electromagnetic energy collection technology. It is worth noting that the power supply component 30 and the circuit board 2 are connected by plugging or other connection methods. This is a prior art and will not be described in detail.

[0038] The monitoring method adopts periodic monitoring, and the monitoring cycle can be adjusted according to specific needs, and of course it can also be adjusted to real-time monitoring.

[0039] refer to Figure 1-Figure 11, a positioning assembly comprises a positioning frame 9 installed in the shell 1, and the positioning frame 9 is located between the circuit board 2 and the inner wall of the shell 1, two fixing frames 22 are arranged on the positioning frame 9, and a third mounting hole 32 is opened on the shell 1, two movable blocks 12 are slidably installed in the positioning frame 9, and an adsorption plate 14 is movably installed at one end of the two movable blocks 12 away from each other, and an electromagnet is arranged in each of the two adsorption plates 14, and the electromagnet is externally connected to an electric plug, and the male plug extends to the limit block 28, and a female socket adapted to the electric plug is arranged in the limit groove 29, and a first sliding rod is rotatably installed on the outer wall of the side away from each other of the two movable blocks 12, and a slide 13 is slidably installed on the first sliding rod, and a limit block 28 is fixedly installed on one end of the adsorption plate 14 near the movable block 12, and a second sliding rod adapted to the slide 13 is arranged on the limit block 28, and a limit groove 29 adapted to the limit block 28 is opened on the side wall of the fixing frame 22, and when the adsorption plate 14 is parallel to the positioning frame 9, the adsorption plate 14 is stored in In the third mounting hole 32, the two adsorption plates 14 are rotated to make them fixedly connected at one end away from each other in a quasi-annular shape, and the two adsorption plates 14 are slidably installed with connecting blocks 16 on the side close to the positioning frame 9, and the two connecting blocks 16 are provided with storage grooves, and hinges 17 are rotatably installed in the two storage grooves, and connecting plates 18 are movably installed on the two hinges 17. Connecting holes are provided on the two connecting plates 18, and one of the connecting holes is provided with bolts and nuts. A reinforcing plate 23 is movably installed in the positioning frame 9. When the adsorption plate 14 is away from the positioning frame 9, the reinforcing plate 23 extends out of the positioning frame 9, and a reinforcing hole adapted to the reinforcing plate 23 is provided on the outer wall of the fixing frame 22, and an elastic rod 24 is provided between the bottom wall of the reinforcing plate 23 and the inner wall of the fixing frame 22, and a first wedge block 25 is fixedly installed on the bottom wall of the fixing frame 22, and a fixing rod 26 is fixedly installed on the outer wall of the side close to the two movable blocks 12, and a second wedge block 27 is provided on the two fixing rods 26.

[0040] In order to reduce the installation difficulty of the sensor and improve the installation stability of the sensor, a positioning frame 9 is provided inside the housing 1. Figure 1-Figure 4 As shown, when the sensor is installed in a cabinet-shaped electrical equipment such as an electrical cabinet, the electromagnets in the four adsorption plates 14 on the positioning frame 9 are used for auxiliary installation, and the housing 1 is adsorbed on the cabinet door of the electrical equipment by magnetic attraction. It is worth noting that the adsorption plate 14 can slide the limit block 28 into the limit groove 29, and the first slide bar is located inside the positioning frame 9 at this time, so that the adsorption plate 14 cannot rotate at this time. This not only facilitates the installation of the staff, but also improves the stability after installation.

[0041] In order to improve the stability of installation, a suction cup 11 is provided on the positioning frame 9 to assist positioning by negative pressure, and a second installation hole 31 adapted to the suction cup 11 is provided on the housing 1. During the installation of the housing 1, the air inside the suction cup 11 is exhausted by pressing it to form negative pressure, so that adsorption can be performed.

[0042] It is worth noting that the number of adsorption plates 14 can be adjusted, preferably an even number, so that the adsorption force can be symmetrically distributed to ensure stability after installation. The corresponding housing 1 also needs to keep the number of third mounting holes 32 compatible.

[0043] When the sensor needs to be installed on the cable, the adsorption plate 14 is pulled and rotated so that the adsorption plate 14 rotates out of the third mounting hole 32, and then the slide 13 is pulled again, the slide 13 is pulled out of the positioning frame 9, and the movable block 12 is brought out, and the adsorption plate 14 and the slide 13 are rotated to the position as shown in FIG. Figure 8 The state shown in FIG. 1 is then slid into the two connecting blocks 16, as shown in FIG. Fig.11 As shown, the two connecting plates 18 are pulled and rotated so that the two connecting holes on the connecting plates 18 are aligned, and then fixed with bolts and nuts. When the movable block 12 is pulled, the movable block 12 drives the second wedge block 27 through the fixing rod 26, and the second wedge block 27 squeezes the first wedge block 25 to slide, thereby driving the reinforcing plate 23 to squeeze the outer wall of the cable, and cooperates with the two adsorption plates 14 to clamp the cable.

[0044] refer to Figure 1-Figure 11 A cannula 10 is provided on the positioning frame 9, a suction cup 11 is connected to the cannula 10, a piston rod 19 is provided in the cannula 10, a first airbag 20 is fixedly installed at one end of the piston rod 19 away from the cannula 10, a second airbag 21 is fixedly installed on the positioning frame 9, a first extrusion frame 15 is provided on the adsorption plate 14, the second airbag 21 is squeezed when the adsorption plate 14 slides, and a first connecting pipe is connected between the first airbag 20 and the second airbag 21, two extrusion plates 37 are rotatably installed on the reinforcement plate 23, a fourth airbag 36 is provided between the extrusion plate 37 and the reinforcement plate 23, a third airbag 33 is provided in the connecting block 16, and a second connecting pipe 35 is connected between the third airbag 33 and the fourth airbag 36, a second extrusion frame 34 is provided on the hinge 17, and the second extrusion frame 34 compresses the third airbag 33 when the hinge 17 moves to the outside of the connecting block 16.

[0045] After the adsorption is completed, that is, after the housing 1 is installed, the sensor is located on the outside of the door panel of the electrical equipment. When the sensor is hit from the side, the sensor will shift to the side as a whole, that is, the adsorption plate 14 will produce relative displacement with the monitoring housing 1, and the second airbag 21 will be squeezed during the displacement. The air in the second airbag 21 enters the second airbag 21 through the first connecting pipe, and the second airbag 21 expands. Fig.10 As shown, during the expansion of the second airbag 21, the piston rod 19 moves toward the outside of the cannula 10, thereby increasing the internal space of the suction cup 11, but the internal air volume remains unchanged, thereby increasing the adsorption force and reducing its displacement amplitude. The above function can be used in areas with strong winds and sand, such as the northwest. Depending on different usage areas, it is possible to consider removing or changing the number of suction cups 11.

[0046] When installed on the cable, after the installation is completed, the cable shakes and the two adsorption plates 14 are pressed outward, causing the hinge 17 to pull the second extrusion frame 34 to compress the third airbag 33, causing the fourth airbag 36 to expand, causing the two extrusion plates 37 to rotate, increasing the friction between the extrusion plates 37 and the cable, thereby improving the stability after installation.

[0047] It is worth noting that anti-skid pads are provided on the outer walls of the adsorption plate 14 and the extrusion plate 37. The thickness of the anti-skid pads is relatively thin, which reduces the impact on the magnetic force.

[0048] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A passive partial discharge temperature two-in-one sensor, comprising a housing (1), characterized in that: Also includes: A monitoring component, comprising a circuit board (2) installed in a housing (1), wherein an ultrasonic probe (3), an antenna (4) and a temperature probe (5) are provided on the circuit board (2); A positioning assembly, comprising a positioning frame (9) installed in a housing (1), wherein the positioning frame (9) is located between a circuit board (2) and an inner wall of the housing (1), wherein two fixing frames (22) are provided on the positioning frame (9), and a third mounting hole (32) is provided on the housing (1), wherein two movable blocks (12) are slidably mounted in the positioning frame (9), and an adsorption plate (14) is movably mounted on one end of the two movable blocks (12) which are away from each other, and when the adsorption plate (14) is parallel to the positioning frame (9), the adsorption plate (14) is received in the third mounting hole (32), and the two adsorption plates (14) are fixedly connected to each other in a quasi-circular shape by rotating the two adsorption plates (14) at their ends which are away from each other, and wherein a reinforcing plate (23) is movably mounted in the positioning frame (9), and when the adsorption plate (14) is away from the positioning frame (9), the reinforcing plate (23) extends out of the positioning frame (9); The positioning frame (9) is provided with an insertion tube (10), the insertion tube (10) is connected with a suction cup (11), a piston rod (19) is provided in the insertion tube (10), a first air bag (20) is fixedly mounted on one end of the piston rod (19) away from the insertion tube (10), a second air bag (21) is fixedly mounted on the positioning frame (9), a first extrusion frame (15) is provided on the adsorption plate (14), the adsorption plate (14) extrudes the second air bag (21) when sliding, and a first connecting pipe is connected between the first air bag (20) and the second air bag (21).

2. A passive partial discharge temperature two-in-one sensor according to claim 1, characterized in that: A power supply component (30) is provided on the positioning frame (9), and the power supply component (30) is a magnetic induction coil or a storage battery. A rear cover (7) is provided on the back of the housing (1), and a shielding cover (6) is provided on the rear cover (7).

3. The passive partial discharge temperature two-in-one sensor according to claim 1, characterized in that: A first slide bar is rotatably mounted on the outer wall of the two movable blocks (12) at a side away from each other, a slide frame (13) is slidably mounted on the first slide bar, a limit block (28) is fixedly mounted on one end of the adsorption plate (14) close to the movable block (12), a second slide bar matched with the slide frame (13) is provided on the limit block (28), and a limit groove (29) matched with the limit block (28) is opened on the side wall of the fixed frame (22).

4. A passive partial discharge temperature two-in-one sensor according to claim 3, characterized in that: An electromagnet is provided in each of the two adsorption plates (14), and an electric plug is externally connected to the electromagnet. The male plug extends to the limit block (28), and a female socket adapted to the electric plug is provided in the limit groove (29).

5. The passive partial discharge temperature two-in-one sensor according to claim 1, characterized in that: The outer wall of the fixing frame (22) is provided with a reinforcement hole matched with the reinforcement plate (23); an elastic rod (24) is provided between the bottom wall of the reinforcement plate (23) and the inner wall of the fixing frame (22); a first wedge block (25) is fixedly mounted on the bottom wall of the fixing frame (22); fixing rods (26) are fixedly mounted on the outer walls of the two movable blocks (12) on the sides close to each other; and second wedge blocks (27) are provided on the two fixing rods (26).

6. The passive partial discharge temperature two-in-one sensor according to claim 1, characterized in that: A connecting block (16) is slidably mounted on one side of the two adsorption plates (14) close to the positioning frame (9), and a receiving groove is provided on the two connecting blocks (16). A hinge (17) is rotatably mounted in the two receiving grooves, and a connecting plate (18) is movably mounted on the two hinges (17). A connecting hole is provided on the two connecting plates (18), and a bolt and a nut are provided in one of the connecting holes.

7. The passive partial discharge temperature two-in-one sensor according to claim 6, characterized in that: Two extrusion plates (37) are rotatably mounted on the reinforcing plate (23); a fourth airbag (36) is provided between the extrusion plate (37) and the reinforcing plate (23); a third airbag (33) is provided in the connecting block (16); a second connecting pipe (35) is connected between the third airbag (33) and the fourth airbag (36); a second extrusion frame (34) is provided on the hinge (17); and when the hinge (17) moves toward the outside of the connecting block (16), the second extrusion frame (34) compresses the third airbag (33).

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