CN114509650A

CN114509650A - Intelligent sensor for partial discharge detection

Info

Publication number: CN114509650A
Application number: CN202210120501.8A
Authority: CN
Inventors: 施健; 都是; 孟展; 沈小鹏
Original assignee: State Grid Jiangsu Electric Power Co ltd Yixing Power Supply Branch; Yixing Yineng Industrial Co ltd; Yixing Suxin Intelligent Technology Development Research Center
Current assignee: State Grid Jiangsu Electric Power Co ltd Yixing Power Supply Branch; Yixing Yineng Industrial Co ltd; Yixing Suxin Intelligent Technology Development Research Center
Priority date: 2022-02-09
Filing date: 2022-02-09
Publication date: 2022-05-17

Abstract

The invention discloses an intelligent sensor for partial discharge detection, and particularly relates to the technical field of partial discharge detection. According to the invention, the cable is detected when the cable is partially discharged through the ultrahigh frequency sensor, the infrared imaging sensor, the ultrasonic sensor and the grounding circulation sensor, the detection range is wider, the detection precision is higher, the wireless network card can realize the connection of the single chip microcomputer and a network, the remote checking by workers is convenient, the use is more intelligent, the air pump is started to pump air and convey the air into the installation cavity through the hose, the air is blown to dissipate heat of the sensor in the installation cavity, and the influence on the use of the sensor caused by the overhigh temperature in the installation cavity after the long-time use is avoided.

Description

Intelligent sensor for partial discharge detection

Technical Field

The invention relates to the technical field of partial discharge detection, in particular to an intelligent sensor for partial discharge detection.

Background

With the development of urbanization, the cable can be used in the power transmission process, the cable is used for transmitting and distributing electric energy, the cable is buried underground, the underground is wet, the working environment of the cable is severe, particularly, the cable is not easy to connect, the cable can be aged after long-time use, the insulation performance is affected, and finally, the cable fault is caused.

The existing detection equipment has single function, generally only has a high-frequency current or ultrahigh frequency detection function for cable detection, cannot detect multiple states of a cable, and needs to carry detection equipment with different functions when detecting other data, so that the operation of workers is very complicated, and the working efficiency is low.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, embodiments of the present invention provide an intelligent sensor for partial discharge detection, which solves the above-mentioned problems occurring in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: an intelligent sensor for partial discharge detection comprises a square block, wherein a detection hole is formed in the surface of the outer wall of the top of the square block, a plurality of installation cavities are uniformly formed in the surface of the outer wall of the detection hole, a sliding plate is movably arranged in each installation cavity, an ultrahigh frequency sensor, an infrared imaging sensor, an ultrasonic sensor and a grounding circulation sensor are respectively arranged at the tops of a plurality of sliding blocks, a limiting block is arranged on the inner side of each sliding plate, the limiting block is fixedly arranged on the inner wall of each installation cavity, an outlet is formed in the outer side of each installation cavity, a baffle is movably hinged in each outlet, a filtering assembly is movably arranged in each baffle, an embedded groove is formed in the surface of the top of the outer wall of the front side of the square block, a control assembly is fixedly arranged in each embedded groove, an accommodating cavity is formed in the bottom of the outer wall of the front side of the square block, an air pump is fixedly arranged in each accommodating cavity, and a plurality of hoses are fixedly arranged on the air inlet pipe of the air pump, the hoses penetrate through the square blocks and are respectively communicated with one sides of the installation cavities.

In a preferred embodiment, the control component comprises a single chip microcomputer and a wireless network card, the wireless network card is fixedly arranged on the single chip microcomputer, the single chip microcomputer is connected with a connecting end of the wireless network card, the single chip microcomputer is connected with output ends of the ultrahigh frequency sensor, the infrared imaging sensor, the ultrasonic sensor and the grounding circulation sensor, the single chip microcomputer is connected with an input end of the air pump, the single chip microcomputer is connected with an external network through the wireless network card, a worker can conveniently use the intelligent device for remote checking, and the wireless network card is very convenient to use.

In a preferred embodiment, a battery compartment is formed in the surface of the outer wall of one side of the square block, a storage battery is arranged in the battery compartment, the storage battery is electrically connected with the single chip microcomputer, the storage battery can provide sufficient electric energy for the single chip microcomputer and each sensor, the whole device does not need to be connected with a power supply all the time, and the carrying and the use are convenient.

In a preferred embodiment, square top and bottom are all fixed and are equipped with two sets of spacing subassemblies, and every spacing subassembly of group all includes the splint of two symmetric distributions, uses two splint to press from both sides in the both sides of cable, carries on spacingly to the cable, splint outer wall fixed surface is equipped with the telescopic link, the fixed connecting plate that is equipped with in telescopic link one side, the connecting plate is fixed to be established on the square outer wall, telescopic link outside cover is equipped with the spring, the spring both ends respectively with splint, connecting plate fixed connection, when the spring received the compression, can produce opposite effort, loosen splint, the spring can promote splint paste always and carry on spacingly on the outer wall of cable.

In a preferred embodiment, each clamping plate is provided with an arc-shaped cross section to better adapt to the shape of the cable, and a silica gel pad is fixedly embedded on the surface of the inner wall of each clamping plate and does not extrude and damage the surface of the cable when the silica gel pad is in contact with the cable.

In a preferred embodiment, the round hole has all been seted up to every splint inside, the round hole internalization is equipped with the round bar, the round bar top is all fixed the cover with the bottom and is equipped with the ring, and the ring can play spacing effect to the round bar, avoids the round bar directly to drop from the round hole, a plurality of circular slots have all been seted up on square top and bottom outer wall surface, round bar one end establish in the circular slot and with the circular slot joint, utilize the round bar to insert the circular slot in, carry on spacingly to the position of splint, the convenient position of adjusting splint.

In a preferred embodiment, threaded hole is all seted up to every baffle inside, screw hole female connection has the crown plate, crown plate outer wall surface machining has the external screw thread, the crown plate passes through external screw thread and screw hole threaded connection, uses the back for a long time, can clear up the crown plate from threaded hole internal disassembly, the crown plate in-connection has two symmetric distribution's filter screen, and the filter screen can filter the dust impurity in the outside air.

In a preferred embodiment, the chamber opening part activity that holds articulates there is the door plant, opens the door plant, makes things convenient for the staff to clear up the chamber inside and inside spare part, the inside fixed gauze that is equipped with of inlaying of door plant plays filterable effect in the exit that holds the chamber.

In a preferred embodiment, two handles are fixedly arranged on two sides of the top of the square block, a plurality of rubber foot pads are fixedly arranged at the bottom of the square block, and the rubber foot pads are uniformly distributed at the bottom of the square block, so that the whole device is more stable in use.

The invention has the technical effects and advantages that:

1. according to the invention, the cable is detected when the cable is partially discharged through the ultrahigh frequency sensor, the infrared imaging sensor, the ultrasonic sensor and the grounding circulation sensor, the detection range is wider, the detection precision is higher, the wireless network card can realize the connection of the single chip microcomputer and a network, the remote checking by workers is convenient, the use is more intelligent, the air pump is started to pump air and convey the air into the installation cavity through the hose, the air is blown to dissipate heat of the sensor in the installation cavity, and the influence on the use of the sensor caused by the overhigh temperature in the installation cavity after the long-time use is avoided.

2. Through grabbing round bar on the splint and being close to splint toward the connecting plate, then insert the round slot of square with the round bar, fix the splint, aim at the inspection hole with the one end of cable again and insert, after the cable has been installed, grab the round bar and extract from the round slot, the spring promotes splint and removes, silica gel pad and the contact of cable outer wall on the messenger's splint inner wall, it is spacing to utilize two liang of splint to carry out the cable, avoid taking place the gliding at the testing process cable, influence the going on of detection achievement, silica gel pad has elasticity and non-conductivity, can avoid splint directly to contact with the cable, cause the damage to the surface of cable.

3. The gauze through in the door plant filters the air, and two filter screens play filterable effect in the crown plate is inside, avoid the dust impurity in the external air to enter into the installation intracavity, influence the radiating effect of installation intracavity sensor to can use the air pump suction, the gaseous inside outflow of crown plate of following that the air pump blew out can blow off the dust impurity of adhesion on the filter screen, improves the filter effect of filter screen, does not need manually to clear up, uses labour saving and time saving more.

Drawings

Fig. 1 is a front view of the overall structure of the present invention.

Fig. 2 is a sectional view of the overall structure of the present invention.

Fig. 3 is an enlarged view of the portion a of fig. 2 according to the present invention.

Fig. 4 is a top cross-sectional view of the mounting cavity of the present invention.

Fig. 5 is a side view of the splint of the present invention.

Fig. 6 is a sectional view of a receiving chamber of the present invention.

Fig. 7 is an exploded view of the ring plate of the present invention.

The reference signs are: 1. a square block; 2. a detection hole; 3. a mounting cavity; 4. a slide plate; 5. an ultrahigh frequency sensor; 6. an infrared imaging sensor; 7. an ultrasonic sensor; 8. a grounded circulating current sensor; 9. a limiting block; 10. a baffle plate; 11. caulking grooves; 12. an accommodating chamber; 13. an air pump; 14. a hose; 15. a single chip microcomputer; 16. a wireless network card; 17. a battery compartment; 18. a storage battery; 19. a splint; 20. a telescopic rod; 21. a connecting plate; 22. a spring; 23. a silica gel pad; 24. a circular hole; 25. a round bar; 26. a circular ring; 27. a circular groove; 28. a threaded hole; 29. a ring plate; 30. filtering with a screen; 31. a door panel; 32. and (5) gauze.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to the attached drawings 1-7 of the specification, the intelligent sensor for partial discharge detection of the embodiment comprises a square block 1, wherein a detection hole 2 is formed in the outer wall surface of the top of the square block 1, a plurality of installation cavities 3 are uniformly formed in the outer wall surface of the detection hole 2, a sliding plate 4 is movably arranged in each installation cavity 3, an ultrahigh frequency sensor 5, an infrared imaging sensor 6, an ultrasonic sensor 7 and a grounding circulating sensor 8 are respectively arranged at the tops of a plurality of sliding blocks, cables are detected by using the ultrahigh frequency sensor 5, the infrared imaging sensor 6, the ultrasonic sensor 7 and the grounding circulating sensor 8, the detection function is more, a limiting block 9 is arranged on the inner side of the sliding plate 4, the limiting block 9 is fixedly arranged on the inner wall of the installation cavity 3, a limiting effect is achieved on one side of the sliding plate 4, the sliding plate 4 is prevented from sliding all the time and contacting with the cables, an outlet is formed in the outer side of each installation cavity 3, the outlet is internally and movably hinged with a baffle 10, the baffle 10 can play a role in sealing the installation cavity 3, the baffle 10 is internally and movably provided with a filtering component, the top surface of the outer wall of the front side of the square 1 is provided with an embedded groove 11, the embedded groove 11 is internally and fixedly provided with a control component, the bottom surface of the outer wall of the front side of the square 1 is provided with a containing cavity 12, the containing cavity 12 is internally and fixedly provided with an air pump 13, the air pump 13 is a device for removing air from a closed space or adding air from the closed space, the air inlet pipe of the air pump 13 is fixedly provided with a plurality of hoses 14, the hoses 14 all penetrate through the square 1 and are respectively communicated with one side of the installation cavities 3, the air pump 13 pumps outside air to be conveyed into the installation cavity 3 through the hoses 14, the heat dissipation effect is played for each installation cavity 3, the top and the bottom of the square 1 are both fixedly provided with two groups of limiting components, the fixed two handles that are equipped with in 1 top both sides of square, 1 fixed a plurality of rubber foot pads that are equipped with in the bottom of square, a plurality of rubber foot pads evenly distributed are in 1 bottom of square, make whole device more stable when using.

The control component comprises a single chip microcomputer 15 and a wireless network card 16, the single chip microcomputer 15 is an integrated circuit chip, the wireless network card 16 is a terminal wireless network device and is a terminal which is not connected through a wire and performs data transmission by adopting a wireless signal, the wireless network card 16 is fixedly arranged on the single chip microcomputer 15, the single chip microcomputer 15 is connected with the connecting end of the wireless network card 16, the single chip microcomputer 15 is connected with the output ends of the ultrahigh frequency sensor 5, the infrared imaging sensor 6, the ultrasonic sensor 7 and the grounding circulation sensor 8, the single chip microcomputer 15 is connected with the input end of the air pump 13, the single chip microcomputer 15 is connected with the external network through the wireless network card 16, a worker can conveniently use the intelligent device for remote checking, the use is very convenient, a battery bin 17 is arranged on the outer wall surface of one side of the square block 1, a storage battery 18 is arranged in the battery bin 17, and the storage battery 18 is electrically connected with the single chip microcomputer 15, the storage battery 18 can provide sufficient electric energy for the single chip microcomputer 15 and each sensor, the whole device does not need to be connected with a power supply all the time, and the carrying and the use are convenient.

The implementation scenario is specifically as follows: when the cable detection device is used, a worker firstly inserts a cable to be detected into a detection hole 2 in a square block 1, the cable is limited by a limiting assembly, then the ultrahigh frequency sensors 5, the infrared imaging sensors 6, the ultrasonic sensors 7 and the grounding loop current sensor 8 on a plurality of sliding blocks are controlled by a single chip microcomputer 15 to detect, the ultrahigh frequency sensors 5 are used for detecting ultrahigh frequency electromagnetic wave signals generated by partial discharge of the cable, the infrared heating imaging technology of the infrared imaging sensors 6 is used for detecting the temperature distribution of the surface of the cable during partial discharge, the ultrasonic sensors 7 are used for detecting ultrasonic signals generated by partial discharge of the cable, the grounding loop current sensor 8 is used for detecting the grounding power frequency current of the cable, the plurality of sensors are used for detecting the partial discharge of the cable, the detection range is more, the detection precision is higher, and the worker can check data detected by each sensor through the single chip microcomputer 15, the recording is convenient, meanwhile, the wireless network card 16 is arranged on the singlechip 15, the wireless connection between the singlechip 15 and a remote terminal can be realized by utilizing the wireless network card 16, the detection data can be checked by the staff on the own intelligent mobile phone, the use is more intelligent, after a period of time, the worker turns on the air pump 13, the air pump 13 pumps the outside air, and the air is respectively conveyed into the installation cavities 3 through the hoses 14, the sensor to in the installation cavity 3 dispels the heat of blowing, avoids long-time use the back, and the use of the too high influence sensor of temperature in the installation cavity 3, the outside is discharged fast to the steam in the installation cavity 3 through the crown plate 29 on the baffle 10, realizes gaseous quick flow, and the radiating effect is better, uses battery 18 in the battery compartment 17 can provide the electric energy for singlechip 15 and each sensor, makes things convenient for staff's carrying device to use.

Referring to the attached drawings 1, 2, 3, 5 and 6 of the specification, in the embodiment of the intelligent sensor for detecting partial discharge, two sets of limiting assemblies are fixedly arranged at the top and the bottom of a square 1, each set of limiting assemblies comprises two clamping plates 19 which are symmetrically distributed, the two clamping plates 19 are clamped at two sides of a cable to limit the cable, the cross section of each clamping plate 19 is arc-shaped and better adapts to the shape of the cable, a silica gel pad 23 is fixedly embedded on the surface of the inner wall of each clamping plate 19, when the silica gel pad 23 is in contact with the cable, the surface of the cable cannot be extruded and damaged, an expansion link 20 is fixedly arranged on the surface of the outer wall of each clamping plate 19, a connecting plate 21 is fixedly arranged on one side of the expansion link 20, the connecting plate 21 is fixedly arranged on the outer wall of the square 1, a spring 22 is sleeved on the outer side of the expansion link 20, and two ends of the spring 22 are respectively fixedly connected with the clamping plates 19 and the connecting plate 21, when spring 22 received the compression, can produce opposite effort, loosen splint 19, spring 22 can promote splint 19 and paste all the time and carry on spacingly on the outer wall of cable, and round hole 24 has all been seted up to every splint 19 inside, round hole 24 internalization is equipped with round bar 25, the equal fixed cover in round bar 25 top and bottom is equipped with ring 26, and ring 26 can play spacing effect to round bar 25, avoids round bar 25 directly to drop from round hole 24 in, a plurality of circular slots 27 have all been seted up on square 1 top and bottom outer wall surface, round bar 25 one end is established in circular slot 27 and with circular slot 27 joint, utilizes in round bar 25 inserts circular slot 27, carries on spacingly to splint 19's position, conveniently adjusts splint 19's position.

The implementation scenario is specifically as follows: in preparation for inserting the cable into the inspection hole 2, the worker manually adjusts the clamp plate 19 at the top of the block 1 to a position away from the inspection hole 2, grasps the round bar 25 of the clamp plate 19 to move the clamp plate 19 toward the connection plate 21, then the round bar 25 is pushed down to be inserted into the round groove 27 of the block 1, thereby fixing the clamping plate 19, and then one end of the cable is inserted in alignment with the detection hole 2, after the cable is installed, the staff grasps round bar 25 and extracts from circular groove 27, spring 22 between splint 19 and the connecting plate 21 promotes splint 19 and removes, make silica gel pad 23 and the contact of cable outer wall on the splint 19 inner wall, utilize two liang of splint 19 to carry on spacingly to the cable, avoid taking place the gliding in the cable testing process, the going on of influence detection achievement, silica gel pad 23 has elasticity and non-conductivity, can avoid splint 19 direct and cable contact, cause the damage to the surface of cable.

Referring to the attached

drawings

1, 2, 4, 6 and 7 of the specification, the local discharge detection intelligent sensor of the embodiment has the advantages that each baffle 10 is internally provided with a threaded hole 28, the threaded holes 28 are internally connected with the annular plate 29, after the sensor is used for a long time, the annular plate 29 can be detached from the threaded holes 28 to be cleaned, external threads are machined on the outer wall surface of the annular plate 29, the annular plate 29 is in threaded connection with the threaded holes 28 through the external threads, two symmetrically distributed filter screens 30 are connected in the annular plate 29, the filter screens 30 can filter dust and impurities in the outside air, the door plate 31 is movably hinged to the opening of the accommodating cavity 12, the door plate 31 is opened, the workers can clean the parts inside and the parts inside the accommodating cavity 12 conveniently, gauze 32 is fixedly embedded in the door plate 31, and a filtering effect is achieved in the outlet of the accommodating cavity 12.

The implementation scenario is specifically as follows: when air pump 13 carries the outside air in the installation cavity 3, use gauze 32 in the door plant 31 earlier to filter the air, then the gas after filtering carries respectively in installation cavity 3 through hose 14, blow off the steam in the installation cavity 3 from the ring board 29 is inside, two inside filter screens 30 of ring board 29 can play filterable effect in the ring board 29 is inside, avoid the dust impurity in the outside air directly to enter into installation cavity 3 from the ring board 29, influence the radiating effect of sensor in the installation cavity 3, and can use air pump 13 suction, the gas that air pump 13 blew off flows from the ring board 29 is inside, can blow off the dust impurity of adhesion on filter screen 30, improve filter screen 30's filter effect, do not need manually to clear up, use labour saving and time saving more.

And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. A partial discharge detection intelligent sensor comprises a square block (1), and is characterized in that: the detection device is characterized in that a detection hole (2) is formed in the surface of the outer wall of the top of the square block (1), a plurality of installation cavities (3) are uniformly formed in the surface of the outer wall of the detection hole (2), a sliding plate (4) is movably arranged in each installation cavity (3), ultrahigh frequency sensors (5), infrared imaging sensors (6), ultrasonic sensors (7) and a grounding circulating current sensor (8) are respectively arranged at the tops of a plurality of sliding blocks, a limiting block (9) is arranged on the inner side of each sliding plate (4), the limiting block (9) is fixedly arranged on the inner wall of each installation cavity (3), an outlet is formed in the outer side of each installation cavity (3), a baffle (10) is movably hinged in the outlet, a filtering component is movably arranged in the baffle (10), an embedding groove (11) is formed in the top surface of the outer wall of the front side of the square block (1), a control component is fixedly arranged in the embedding groove (11), an accommodating cavity (12) is formed in the surface of the bottom of the outer wall of the front side of the square block (1), an air pump (13) is fixedly arranged in the accommodating cavity (12), a plurality of hoses (14) are fixedly arranged on an air inlet pipe of the air pump (13), and the hoses (14) penetrate through the square block (1) and are respectively communicated with one sides of the mounting cavities (3).

2. The intelligent sensor for partial discharge detection as claimed in claim 1, wherein: the control assembly comprises a single chip microcomputer (15) and a wireless network card (16), the wireless network card (16) is fixedly arranged on the single chip microcomputer (15), the single chip microcomputer (15) is connected with the connecting end of the wireless network card (16), the single chip microcomputer (15) is connected with the output ends of the ultrahigh frequency sensor (5), the infrared imaging sensor (6), the ultrasonic sensor (7) and the grounding circulation sensor (8), and the single chip microcomputer (15) is connected with the input end of the air pump (13).

3. The intelligent sensor for partial discharge detection as claimed in claim 2, wherein: the surface of the outer wall of one side of the square block (1) is provided with a battery bin (17), a storage battery (18) is arranged in the battery bin (17), and the storage battery (18) is electrically connected with the single chip microcomputer (15).

4. The intelligent sensor for partial discharge detection as claimed in claim 1, wherein: square (1) top and bottom are all fixed and are equipped with two sets of spacing subassemblies, and every spacing subassembly of group all includes splint (19) of two symmetric distributions, splint (19) outer wall fixed surface is equipped with telescopic link (20), telescopic link (20) one side is fixed and is equipped with connecting plate (21), fixed the establishing on square (1) outer wall of connecting plate (21), telescopic link (20) outside cover is equipped with spring (22), spring (22) both ends respectively with splint (19), connecting plate (21) fixed connection.

5. The intelligent sensor for partial discharge detection as claimed in claim 4, wherein: every splint (19) cross-section all sets up to the arc, and every splint (19) inner wall surface all fixes to inlay and is equipped with silica gel pad (23).

6. The intelligent sensor for partial discharge detection as claimed in claim 4, wherein: round hole (24) have all been seted up to every splint (19) inside, round hole (24) internalization is equipped with round bar (25), equal fixed cover in round bar (25) top and bottom is equipped with ring (26), a plurality of circular slots (27) have all been seted up on square (1) top and bottom outer wall surface, round bar (25) one end is established in circular slot (27) and with circular slot (27) joint.

7. The intelligent sensor for partial discharge detection as claimed in claim 1, wherein: threaded hole (28) are all seted up to every baffle (10) inside, threaded hole (28) female connection has crown plate (29), crown plate (29) outer wall surface machining has the external screw thread, crown plate (29) are through external screw thread and threaded hole (28) threaded connection, crown plate (29) in-connection has two symmetric distribution's filter screen (30).

8. The intelligent sensor for partial discharge detection as claimed in claim 1, wherein: the opening of the accommodating cavity (12) is movably hinged with a door plate (31), and gauze (32) is fixedly embedded in the door plate (31).

9. The intelligent sensor for partial discharge detection as claimed in claim 1, wherein: the utility model discloses a square, including square (1), fixed two handles that are equipped with in square (1) top both sides, the fixed a plurality of rubber foot pads that are equipped with in square (1) bottom, a plurality of rubber foot pad evenly distributed are in square (1) bottom.