CN112034319A - Improved generation ultrasonic wave partial discharge detection device - Google Patents
Improved generation ultrasonic wave partial discharge detection device Download PDFInfo
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- CN112034319A CN112034319A CN202011113989.9A CN202011113989A CN112034319A CN 112034319 A CN112034319 A CN 112034319A CN 202011113989 A CN202011113989 A CN 202011113989A CN 112034319 A CN112034319 A CN 112034319A
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1209—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention discloses an improved ultrasonic partial discharge detection device, which improves the working efficiency of GIS equipment in the partial discharge detection process, reduces the labor intensity and ensures the personal safety; the invention discloses a partial discharge sensor and a partial discharge host for detecting GIS equipment; the partial discharge sensor is adjusted to an angle attached to the surface of the GIS equipment through an adjusting assembly; the adjusting assembly is connected with the insulating rod; the bottom of the insulating rod is installed on a fixed chassis, the fixed chassis comprises a base, two adjusting baffles are symmetrically arranged on the base, a sleeve is hinged to each adjusting baffle, and the bottom of the insulating rod is inserted into the sleeve.
Description
Technical Field
The invention relates to an ultrasonic partial discharge detection device, which is particularly used for partial discharge detection of GIS equipment.
Background
In recent years, GIS equipment has attracted attention due to its characteristics of compact structure, good insulating property, high reliability, strong safety, strong environmental adaptability, small floor space, convenient installation, etc., and is widely used in power systems. Some or all electrical components in the GIS equipment are sealed in a metal shell, the structure is closed, and the internal electric field is concentrated. When defects such as corona, free metal particles, protrusions or burrs of conductors or contact electrodes, suspension potential and the like exist, equipment partial discharge is caused, if the defects cannot be detected and processed in time, the insulating property is seriously damaged, equipment faults are finally caused, serious power failure accidents are caused, and the reliability of the equipment is greatly reduced. Due to the sealing performance of the GIS equipment structure, when the GIS equipment breaks down, the GIS equipment is difficult to position the fault, long in fault processing time, difficult to maintain, time-consuming and labor-consuming, and large-area power failure is needed. Therefore, the importance of the safe and stable operation of the GIS equipment to the safety of the power grid is increasingly highlighted.
At present, the power system mainly utilizes an ultrasonic detection technology or an ultrahigh frequency detection technology for detecting the partial discharge fault of the GIS equipment. The ultrasonic detection technology has the advantages of strong anti-electromagnetic interference capability, convenience in discharge positioning and the like, is applied to GIS equipment operation detection, and is one of the most mature partial discharge detection methods except the ultrahigh frequency detection method at present. At present, the main equipment of the ultrasonic partial discharge tester on the market comprises a host, an ultrasonic sensor and a signal transmission line, wherein the ultrasonic sensor is connected with the host through the signal transmission line. GIS arrangement of each region is different, and climbing needs to be faced in the detection process, and the sensor is extended to various operations such as a distance. At present, a sensor is generally held by one person when the field detection is carried out, the sensor is placed according to a detection position, and the GIS equipment with a higher installation position can only be climbed to an equipment high place through a ladder or a person to carry out test work. In the process of ascending operation, a detector firmly attaches the probe to the designated positions such as the surface of the GIS shell, the labor intensity is high, the time and the labor are consumed, the high-altitude operation is high in danger, the collision between the probe and the equipment shell cannot be completely avoided during the installation and the removal of the probe, the damage of the probe is easily caused, and the development of partial discharge detection work is seriously influenced. When the outgoing line part of the bus or the sleeve is detected, the distance between a worker and the exposed electrified part is very close, an induced electrical injury accident is easy to occur, and a special person is required to monitor so as to ensure a sufficient safety distance; some test points are narrow and small in position, and detection personnel cannot approach the test points.
The ultrasonic detection method is a detection method for collecting, analyzing and judging sound signals with the frequency of 20-200 kHz. When partial discharge occurs in an electrical device, ultrasonic waves are emitted due to the violent collision of molecules, the formation and development of bubbles, the jumping of particles and the tiny vibration of solid materials. Ultrasonic waves can penetrate through gas media and metal structures to reach the outside of electrical equipment, and the ultrasonic detection method is to detect partial discharge signals by installing a sensor on an equipment shell.
The ultrasonic detection principle is as follows: the ultrasonic sensor is arranged on the equipment tank body, and the sensor converts the received ultrasonic signals into analog signals and transmits the analog signals to the detection host through a coaxial cable; the analog signal is sampled and processed by the host computer, and then the detection result is displayed through the host computer interface. The existing ultrasonic detection technology can realize accurate positioning of a discharge power supply of equipment, different discharge position signal transmission time is different, transmission rate is also different, signals received by a sensor have time difference, positioning of the discharge power supply can be realized by means of the propagation rate and the time difference, and amplitude positioning of the discharge power supply can be realized by comparing the intensity of two paths or multiple paths of ultrasonic detection signals. The detection principle is schematically shown in fig. 1.
The propagation velocity of sound wave in the air is far less than the propagation velocity in mediums such as copper, aluminium, steel, consequently when carrying out ultrasonic detection to GIS equipment, only with the probe of ultrasonic sensor and the reliable contact of equipment casing, the ultrasonic signal that GIS equipment sent can relatively accurate measurement. At present, couplants such as silicone grease are mainly adopted to reinforce the contact between a sensor probe and an equipment tank body. The sound waves are attenuated at different speeds in different media, the sound waves are attenuated slowly in SF6 gas and steel media, ultrasonic signals can be received well by adopting ultrasonic sensor detection equipment, the detection positions of the ultrasonic sensors are different, and the received signals are also different.
In view of the above problem, this patent scheme has proposed on the basis that does not change original ultrasonic tester structure, increases detachable flexible insulator spindle, ultrasonic sensor fixed subassembly, sensor and insulator spindle connecting portion subassembly, wireless transmission signal subassembly and flexible insulator spindle fixed base's hypothesis. According to the design idea, all parts are assembled and applied to the field, and the field detection result shows that the device improves the working efficiency, reduces the labor intensity and ensures the personal safety.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an improved ultrasonic partial discharge detection device aiming at the defects in the prior art, so that the working efficiency of the GIS equipment in the partial discharge detection process is improved, the labor intensity is reduced, and the personal safety is ensured.
In order to achieve the purpose, the invention discloses and adopts the following technical scheme to realize:
an improved ultrasonic partial discharge detection device comprises a partial discharge sensor and a partial discharge host machine, wherein the partial discharge sensor is used for detecting GIS equipment; the partial discharge sensor is adjusted to an angle attached to the surface of the GIS equipment through an adjusting assembly; the adjusting assembly is connected with the insulating rod; the bottom of the insulating rod is installed on a fixed chassis, the fixed chassis comprises a base, two adjusting baffles are symmetrically arranged on the base, a sleeve is hinged to each adjusting baffle, and the bottom of the insulating rod is inserted into the sleeve.
As a preferred embodiment of the present invention: the insulating rod comprises a first telescopic joint and a second telescopic joint, and further comprises a knob for locking and loosening the first telescopic joint and the second telescopic joint.
As a preferred embodiment of the present invention: the top of the insulating rod is provided with a connector, and the connector is connected with the adjusting assembly;
the bottom of the connector is sleeved at the top of the insulating rod, a radial through hole is formed in the connector, the radial through hole is a fixing hole used for connecting the insulating rod and the connector, and a rivet penetrates through the fixing hole to fix the connector on the insulating rod; the top of connector is provided with the connecting hole that is used for being connected with adjusting part.
As a preferred embodiment of the present invention: the partial discharge sensor is arranged on a sensor mounting seat, the sensor mounting seat is fixed on the adjusting assembly, and the sensor mounting seat comprises a vertical connecting groove, a shell, a sensor groove, a spring base, a metal clamping ring groove and a connecting stud; the connecting stud is fixed with the adjusting component; a shell is fixed on the connecting stud, a sensor groove for mounting a partial discharge sensor is formed in the shell, a spring base is mounted at the bottom of the sensor groove, a circle of metal clamping ring groove is formed in the position, close to the top, of the shell, the partial discharge sensor is mounted in the sensor groove, and a metal clamping ring for clamping the partial discharge sensor in the sensor groove is mounted on the metal clamping ring groove; and the bottom of the shell is provided with a vertical connecting groove.
As a preferred embodiment of the present invention: the shell is made of nylon.
As a preferred embodiment of the present invention: the adjusting assembly comprises a stud, a fixed column, an adjusting fixed plate and a connecting plate; the connecting hole is a threaded hole, and the threaded hole is connected with a stud at the bottom of the fixed column; the top of the fixed column is a semicircular adjusting fixed plate, a connecting plate is rotatably installed on the adjusting fixed plate through an articulated piece, and the top of the connecting plate is a threaded hole for fixing a connecting stud of the sensor installation seat.
As a preferred embodiment of the present invention: the adjusting assembly is a ball joint assembly, the bottom of the ball joint assembly is a horizontal rotating seat, and the bottom of the horizontal rotating seat is connected to the connecting hole; the horizontal rotating seat is provided with a ball joint base, the ball joint base is provided with a rotating ball, the rotating ball is connected with a mounting seat, and the mounting seat is connected with a vertical connecting groove of the sensor mounting seat through a connecting stud.
As a preferred embodiment of the present invention: the ball joint assembly further comprises a damping adjustment knob for adjusting the rotational damping of the rotating ball and a ball joint locking knob for locking the position of the rotating ball.
As a preferred embodiment of the present invention: the partial discharge sensor is connected with a signal conditioner arranged on the insulating rod through a connecting wire, and the signal conditioner is in wireless communication with the partial discharge host.
As a preferred embodiment of the present invention: the signal conditioner comprises a pre-amplification circuit for amplifying signals, and the signal conditioner is in wireless communication with the partial discharge host through ZigBee.
The invention has the beneficial effects that:
the invention discloses an improved ultrasonic partial discharge detection device.A partial discharge sensor is adjusted to an angle attached to the surface of GIS equipment through an adjusting component; the adjustment of the adjusting assembly can ensure the optimal detection position and detection angle of the partial discharge sensor; the adjusting component is connected with the insulating rod; the invention avoids the manual climbing in the detection process through the insulating rod, and can carry out the all-dimensional measurement of the GIS equipment at a lower position; the bottom of the insulating rod is arranged on a fixed chassis, the fixed chassis comprises a base, two adjusting baffles are symmetrically arranged on the base, a sleeve is hinged on each adjusting baffle, and the bottom of the insulating rod is inserted into the sleeve. In consideration of saving the number of detection personnel, the invention can realize the standing of the insulating rod through the fixed chassis at the bottom of the insulating rod, thus being capable of checking the monitoring information of the position of the partial discharge host without manual support and saving manpower; the bottom of the insulating rod can be hinged to a self-adaptive position, so that the insulating rod can conveniently lean against the GIS equipment at the optimal position.
Drawings
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of signal transmission according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of one embodiment of a stationary base plate of the present invention;
FIG. 4 is a schematic structural view of an embodiment of the insulating rod of the present invention;
FIG. 5 is an enlarged schematic view of FIG. 4 at A;
FIG. 6 is a schematic view of a preferred mounting structure for the sensor of the present invention;
FIG. 7 is a schematic view of the structure of FIG. 6 at another angle;
FIG. 8 is a schematic structural view of a preferred embodiment of the sensor mounting assembly of the present invention;
FIG. 9 is a side view of the structure of FIG. 8;
FIG. 10 is a schematic top view of the structure of FIG. 8;
fig. 11 is a schematic structural view of a preferred embodiment of the sensor angle adjustment assembly of the present invention.
Description of reference numerals:
1-a fixed chassis, 2-an insulating rod, 3-a first telescopic joint, 4-a second telescopic joint, 5-a signal conditioner, 6-a partial discharge sensor, 7-a GIS device, 8-a partial discharge host, 9-a sleeve, 10-an adjusting baffle, 11-a base, 12-a fixed hole, 13-a connector, 14-a connecting hole, 15-a connecting lead, 16-a connecting seat, 17-a connecting plate, 18-an adjusting fixed plate, 19-a cushion block, 20-a hinged piece, 21-a metal clamping ring groove, 22-a sensor groove, 23-a spring base, 24-a shell, 25-a horizontal connecting hole, 26-a vertical connecting groove, 27-a horizontal rotating seat, 28-a damping adjusting knob, 29-a ball joint base, 30-rotating ball, 31-mounting seat, 32-ball joint locking knob and 33-fixing column.
Detailed Description
The following description of the embodiments of the present invention refers to the accompanying drawings and examples:
as shown in fig. 1-11, which illustrate an embodiment of the present invention, as shown in the drawings, an improved ultrasonic partial discharge detection apparatus disclosed in the present invention includes a partial discharge sensor 6 and a partial discharge host 8 for detecting a GIS device; the partial discharge sensor 6 is adjusted to an angle attached to the surface of the GIS device 7 through an adjusting component; the adjusting component is connected with the insulating rod 2; the bottom of the insulating rod 2 is installed on the fixed chassis 1, the fixed chassis 1 comprises a base 11, two adjusting baffles 10 are symmetrically arranged on the base 11, a sleeve 9 is hinged to the adjusting baffles 10, and the bottom of the insulating rod 2 is inserted into the sleeve 9.
As a preferred embodiment of the present invention, as shown in fig. 1 and 4: insulating rod 2 contains first telescopic joint 3 and second telescopic joint 4, insulating rod 2 still contains and is used for locking and loosens the knob of first telescopic joint 3, second telescopic joint 4. The telescopic joint is arranged, so that the height of the insulating rod can be adjusted, the detection environment which can be adapted to the telescopic joint is wider, and climbing is avoided.
As a preferred embodiment of the present invention, as shown in fig. 1, 4, 5: the top of the insulating rod 2 is provided with a connector 13, and the connector 13 is connected with the adjusting assembly;
the bottom of the connector 13 is sleeved on the top of the insulating rod 2, a radial through hole is formed in the connector 13, the radial through hole is a fixing hole 12 used for connecting the insulating rod 2 and the connector 13, and a rivet penetrates through the fixing hole 12 to fix the connector 13 on the insulating rod 2; the top of the connecting head 13 is provided with a connecting hole 14 for connecting with an adjusting component. The structure of the connector is beneficial to more stably and reliably connecting the adjusting assembly; the radial through holes designed on the connector can be reliably connected, and the connecting holes are used for connecting the adjusting assembly; the connector is used as a reinforcing structure to connect the adjusting assembly, and is favorable for the reliable work of the adjusting assembly and the assemblies thereon.
As a preferred embodiment of the present invention, as shown in fig. 1, 8, 9, 10: the partial discharge sensor 6 is arranged on a sensor mounting seat, the sensor mounting seat is fixed on the adjusting component, and the sensor mounting seat comprises a vertical connecting groove 26, a shell 24, a sensor groove 22, a spring base 23, a metal clamping ring groove 21 and a connecting stud; the connecting stud is fixed with the adjusting component; a shell 24 is fixed on the connecting stud, a sensor groove 22 for mounting the partial discharge sensor 6 is formed in the shell 24, a spring base 23 is mounted at the bottom of the sensor groove 22, a ring of metal clamping ring groove 21 is formed in the position, close to the top, of the shell 24, the partial discharge sensor 6 is mounted in the sensor groove 22, and a metal clamping ring for clamping the partial discharge sensor 6 in the sensor groove 22 is mounted on the metal clamping ring groove 21; the bottom of the housing 24 is provided with a vertical connecting slot 26. In the preferred society, a sensor mounting seat is designed for the partial discharge sensor, so that the partial discharge sensor can be reliably fixed; specifically, put the sensor with the office and produce the buffering vibration through spring bracket after installing in the sensor inslot, it is spacing to consolidate outside through the metal snap ring for the office puts the sensor and has self-adaptation vibration and reliable fixed structure when specifically measuring, has ensured the testing process that can lean on the accurate going.
As a preferred embodiment of the present invention, as shown in the drawings: the shell 24 is made of nylon. The nylon material possesses reliable insulation, possesses certain elasticity and processing ability simultaneously for the clamp effect of metal snap ring is more reliable.
As a preferred embodiment of the present invention, as shown in fig. 6 and 7: the adjusting component comprises a stud, a fixing column 33, an adjusting fixing plate 18 and a connecting plate 17; the connecting hole 14 is a threaded hole, and the threaded hole is connected with a stud at the bottom of the fixing column 33; the top of the fixed column 33 is a semicircular adjusting fixed plate 18, the adjusting fixed plate 18 is rotatably provided with a connecting plate 17 through a hinge 20, and the top of the connecting plate 17 is a threaded hole for fixing a connecting stud of a sensor mounting seat. The embodiment designs a structure of the adjusting assembly, which can reliably swing in a large range, so that the surface of the GIS equipment can be attached conveniently and reliably; the implementation is easy, and the cushion block 19 can be arranged between the connecting plate and the adjusting fixing plate in the preferred embodiment, so that the adjusting swing process has a damping effect, and over-sensitive swing is avoided; the cushion can be designed into the effect of twelve groups of extension rods which are outwards emitted from the center, the damping control is more reliable, the effect of damping change can be achieved after one swing angle, and the stop at a reliable detection position is facilitated.
As a preferred embodiment of the present invention, as shown in fig. 11: the adjusting assembly is a ball joint assembly, the bottom of the ball joint assembly is a horizontal rotating seat 27, and the bottom of the horizontal rotating seat 27 is connected to the connecting hole 14; a ball joint base 29 is installed on the horizontal rotating base 27, a rotating ball 30 is arranged on the ball joint base 29, an installation base 31 is connected to the rotating ball 30, and the installation base 31 is connected with the vertical connection groove 26 of the sensor installation base through a connection stud. The embodiment designs another preferable adjusting component, and the adjusting component has an adjusting structure of approximate 360 degrees, so that the adjusting component can adapt to wider detection environment and detection angle. 360 degrees are based on the design structure of the ball joint, and the horizontal 180-degree adjustment is realized through the horizontal rotating seat, so that the adjusting range of the adjusting assembly of the embodiment is very large, the adjusting assembly can be suitable for more occasions, and the fitting detection effect is better; it should be noted that, if the structure of the adjusting component of this embodiment is installed on the adjusting component of the above-mentioned connection connecting plate, the swing of the connecting plate can be used as coarse adjustment, the adjusting component of this embodiment is used for fine adjustment to adapt to the surface of the GIS device, such an effect can realize quick adaptation to the surface of the GIS device, and the detection efficiency is increased under the condition of improving the detection effect.
As a preferred embodiment of the present invention, as shown in fig. 11: the ball joint assembly also includes a damping adjustment knob 28 for adjusting the rotational damping of the rotating ball and a ball joint locking knob 32 for locking the position of the rotating ball. This preferred embodiment has designed damping adjustment's structure and locking structure for the ball joint subassembly, and damping adjustment can make the adaptation process more steady, and locking structure can let the adaptation after can the latched position.
As a preferred embodiment of the present invention, as shown in fig. 1 and 2: the partial discharge sensor 6 is connected with the signal conditioner 5 arranged on the insulating rod 2 through a connecting wire 15, and the signal conditioner 5 is in wireless communication with the partial discharge host 8. The signal conditioner is designed in the embodiment, so that the signal conditioning is facilitated, and the accurate transmission of the detection signal is ensured.
As a preferred embodiment of the present invention, as shown in fig. 1 and 2: the signal conditioner 5 comprises a pre-amplification circuit for amplifying signals, and the signal conditioner 5 is in wireless communication with the partial discharge host 8 through ZigBee.
In summary, the following steps:
the traditional ultrasonic detection device is mainly composed of an equipment host, an ultrasonic sensor and a signal transmission line, and the existing equipment can not meet the requirement of modern power grid live detection. Aiming at the problem, the invention adds a telescopic insulating rod, an ultrasonic sensor fixing component, a wireless transmission module and a fixing base on the basis of the traditional ultrasonic partial discharge detection device.
As shown in the figure, the detachable telescopic insulating rod, the ultrasonic sensor fixing component, the component assembly of the connection part of the sensor and the insulating rod, the wireless transmission signal component and the telescopic insulating rod fixing base are additionally arranged on the basis of not changing the structure of the original ultrasonic tester. The telescopic insulating rod is mainly made of epoxy resin insulating materials, and can be designed into a 3-section telescopic insulating rod with the length of 4 meters according to field requirements, so that ascending operation of personnel is avoided, and the working efficiency is improved. The sensor fixing component mainly comprises a spring base, a shell and a sensor metal clamping ring. The main design concept is as follows: embedding a sensor into a shell, and configuring a special metal fixing clamp ring; a spring base is arranged at the bottom in the shell, and the sensor is embedded in the clamping groove and is supported on the spring. When the sensor lifted up through the telescopic insulating rod for testing, the metal snap ring can be reliably fixed in the shell of the sensor, and the spring buffers the sensor when contacting with the shell and achieves the effect of preventing shaking. The sensor fixing component can design the size of the clamping groove according to the actual size of the sensor, and the size of the sensor fixing component is not fixed. The sensor and insulating rod connecting part assembly provided by the invention designs the structure of the connecting part by taking the design idea that the camera holder can rotate universally as a reference. The universal steering connecting part designed by the invention can realize the arbitrary angle fixation of the sensor within the range of 0-360 degrees horizontally and 0-90 degrees vertically, and the sensor can be efficiently aligned to the shell of the measured object by the design concept, so that the effective attachment is realized, and the measurement in the field is more convenient. The invention adds a signal conditioner behind the ultrasonic sensor (partial discharge sensor), amplifies the signal by using the preamplifier circuit of the signal conditioner, collects the received signal, and transmits the signal back to the host by using the ZigBee technology, thereby solving the problems of signal attenuation and delay and realizing the wireless transmission of the signal. The signal conditioner is an existing device, and the type of the signal conditioner can be determined according to the signal transmission distance. According to the telescopic insulating rod fixing chassis, the insulating rod needs to be lifted by people during field actual detection, and the insulating rod is easy to move due to manual force application, so that the test is inaccurate, so that the fixing chassis is additionally arranged at the bottom of the telescopic insulating rod, the insulating rod is placed and fixed on the ground, and the rod body is stable in the test process. The fixed chassis designed by the invention can freely adjust the angle (within the range of 0-90 degrees) of the insulating rod, and when the length of the test rod is greater than the ground clearance of the GIS, the angle of the insulating rod can be adjusted, so that the insulating rod can be inclined by depending on the GIS shell for testing.
The partial discharge detection time of the combined electrical apparatus is greatly shortened, the working efficiency is improved, the working intensity of maintenance personnel is effectively reduced, the maintenance capability of a transformer substation is improved, the operation and maintenance level of a power grid is improved, and the core competitiveness of an enterprise is improved. The ascending operation in the partial discharge detection process of the combined electrical appliance is effectively avoided, the occurrence of falling accidents at high positions is avoided, and the personal safety is guaranteed; meanwhile, the artificial power grid accident risk caused by mistaken touch of the operating handle of the live equipment due to ascending is reduced, and the safety of the power grid and the equipment is effectively improved. The sensor fixing component comprises a spring base, a shell and a sensor metal clamping ring. The sensor is embedded into the shell, and the special metal fixing clamp ring is arranged, so that the sensor is prevented from being damaged in the testing process. Set up spring base bottom in the shell, with the sensor embedded in the draw-in groove and rely on the spring, the spring will cushion and reach the effect that prevents the shake when sensor and casing contact, has improved test data's accuracy. The fixing mode not only can be conveniently assembled and disassembled, but also can be used for carrying out data testing very reliably, so that the damage of the sensor is avoided, the influence of hand trembling in the traditional testing mode is improved, and the testing time is saved.
While the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the above embodiments, and various changes, which relate to the related art known to those skilled in the art and fall within the scope of the present invention, can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (10)
1. An improved ultrasonic partial discharge detection device comprises a partial discharge sensor and a partial discharge host machine, wherein the partial discharge sensor is used for detecting GIS equipment; the method is characterized in that: the partial discharge sensor is adjusted to an angle attached to the surface of the GIS equipment through an adjusting assembly; the adjusting assembly is connected with the insulating rod; the bottom of the insulating rod is installed on a fixed chassis, the fixed chassis comprises a base, two adjusting baffles are symmetrically arranged on the base, a sleeve is hinged to each adjusting baffle, and the bottom of the insulating rod is inserted into the sleeve.
2. An improved ultrasonic partial discharge detector apparatus as defined in claim 1, wherein: the insulating rod contains first telescopic joint and second telescopic joint, the insulating rod still contains and is used for locking and relaxs the knob of first telescopic joint, second telescopic joint.
3. An improved ultrasonic partial discharge detector apparatus as defined in claim 1, wherein: the top of the insulating rod is provided with a connector, and the connector is connected with the adjusting assembly;
the bottom of the connector is sleeved at the top of the insulating rod, a radial through hole is formed in the connector, the radial through hole is a fixing hole used for connecting the insulating rod and the connector, and a rivet penetrates through the fixing hole to fix the connector on the insulating rod; the top of connector is provided with the connecting hole that is used for being connected with adjusting part.
4. An improved ultrasonic partial discharge detector apparatus as claimed in claim 3, wherein: the partial discharge sensor is arranged on a sensor mounting seat, the sensor mounting seat is fixed on the adjusting assembly, and the sensor mounting seat comprises a vertical connecting groove, a shell, a sensor groove, a spring base, a metal clamping ring groove and a connecting stud; the connecting stud is fixed with the adjusting component; a shell is fixed on the connecting stud, a sensor groove for mounting a partial discharge sensor is formed in the shell, a spring base is mounted at the bottom of the sensor groove, a circle of metal clamping ring groove is formed in the position, close to the top, of the shell, the partial discharge sensor is mounted in the sensor groove, and a metal clamping ring for clamping the partial discharge sensor in the sensor groove is mounted on the metal clamping ring groove; and the bottom of the shell is provided with a vertical connecting groove.
5. An improved ultrasonic partial discharge detector apparatus as claimed in claim 4, wherein: the shell is made of nylon.
6. An improved ultrasonic partial discharge detector apparatus as claimed in claim 4, wherein: the adjusting assembly comprises a stud, a fixed column, an adjusting fixed plate and a connecting plate; the connecting hole is a threaded hole, and the threaded hole is connected with a stud at the bottom of the fixed column; the top of the fixed column is a semicircular adjusting fixed plate, a connecting plate is rotatably installed on the adjusting fixed plate through an articulated piece, and the top of the connecting plate is a threaded hole for fixing a connecting stud of the sensor installation seat.
7. An improved ultrasonic partial discharge detector apparatus as claimed in claim 4, wherein: the adjusting assembly is a ball joint assembly, the bottom of the ball joint assembly is a horizontal rotating seat, and the bottom of the horizontal rotating seat is connected to the connecting hole; the horizontal rotating seat is provided with a ball joint base, the ball joint base is provided with a rotating ball, the rotating ball is connected with a mounting seat, and the mounting seat is connected with a vertical connecting groove of the sensor mounting seat through a connecting stud.
8. An improved ultrasonic partial discharge detector apparatus as defined in claim 7, wherein: the ball joint assembly further comprises a damping adjustment knob for adjusting the rotational damping of the rotating ball and a ball joint locking knob for locking the position of the rotating ball.
9. An improved ultrasonic partial discharge detector apparatus as defined in claim 1, wherein: the partial discharge sensor is connected with a signal conditioner arranged on the insulating rod through a connecting wire, and the signal conditioner is in wireless communication with the partial discharge host.
10. An improved ultrasonic partial discharge detector apparatus as defined in claim 9, wherein: the signal conditioner comprises a pre-amplification circuit for amplifying signals, and the signal conditioner is in wireless communication with the partial discharge host through ZigBee.
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| CN202011113989.9A CN112034319A (en) | 2020-10-18 | 2020-10-18 | Improved generation ultrasonic wave partial discharge detection device |
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| CN202011113989.9A CN112034319A (en) | 2020-10-18 | 2020-10-18 | Improved generation ultrasonic wave partial discharge detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115561599A (en) * | 2022-12-07 | 2023-01-03 | 国网辽宁省电力有限公司 | Transformer partial discharge intelligent detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115561599A (en) * | 2022-12-07 | 2023-01-03 | 国网辽宁省电力有限公司 | Transformer partial discharge intelligent detector |
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