CN113204012B - Abnormal sound positioning method for electrical equipment - Google Patents
Abnormal sound positioning method for electrical equipment Download PDFInfo
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- CN113204012B CN113204012B CN202110450431.8A CN202110450431A CN113204012B CN 113204012 B CN113204012 B CN 113204012B CN 202110450431 A CN202110450431 A CN 202110450431A CN 113204012 B CN113204012 B CN 113204012B
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- 230000002159 abnormal effect Effects 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000007689 inspection Methods 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 12
- 238000013459 approach Methods 0.000 claims abstract description 5
- 238000013016 damping Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000001914 filtration Methods 0.000 abstract description 4
- 230000035939 shock Effects 0.000 description 7
- 238000001228 spectrum Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves
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Abstract
The invention discloses an abnormal sound positioning method of electrical equipment, which belongs to the technical field of operation and maintenance of power systems, wherein a sounding instrument for measuring the frequency and the intensity of specific sound is fixed at one end of an insulating rod so as to maintain a safe distance between an maintainer and the equipment; when abnormal sound of the electrical equipment is heard in the inspection process, measuring the sound frequency of the electrical equipment by using a sound wave detector, and filtering out abnormal sound frequency; on the acoustic wave detector, intensity measurement is performed only on sound of that frequency; an maintainer stands at a measuring point outside the safety distance line, holds an insulating rod fixedly provided with a sound measuring instrument, approaches the sound measuring instrument to the equipment to be measured, moves back and forth near the equipment, and records the measured sound intensity as p; when the sounding device moves to a specific position at a certain moment, the intensity p of the sound is not increased any more, and the maximum value p is obtained max And judging that abnormal sound is sent out near the point, namely the potential fault point of the equipment. The method is simple and convenient to operate, and the abnormal sound position of the electrical equipment can be rapidly positioned.
Description
Technical Field
The invention relates to the technical field of operation and maintenance of power systems, in particular to an abnormal sound positioning method for electrical equipment.
Background
In recent years, the development of power systems in China is rapid, and more industries are increasingly dependent on power, so that the requirements on the reliability of the systems are higher and higher. In the tour process, whether the equipment operates normally can be judged through modes of 'watching', 'listening', 'sniffing', 'touching', and the like. When an operation and maintenance person patrols and looks at the equipment area, abnormal sound is frequently heard, and the process of hearing abnormal sound sounds is highly dependent on experience of operation and maintenance, detection and maintenance personnel, artificial subjective factors exist, the accurate position of the abnormal sound can not be accurately positioned, misjudgment is easily caused, and misguidance is brought to maintenance. In order to ensure safe and stable operation of the power system and reduce the probability of occurrence of equipment and personal accidents, a method for positioning abnormal sound of electrical equipment, which is easy and convenient to operate and capable of rapidly positioning the abnormal sound of the electrical equipment, is needed to analyze and judge whether the equipment has defects or not early, accurately and rapidly.
Patent document with publication number CN 110617876A discloses a method for locating abnormal sound of power equipment, comprising: transmitting laser to irradiate the tested equipment through a laser vibration meter, and scanning the irradiated area to obtain reflection spectrum information of each scanning point; obtaining the reflected light frequency in the reflected spectrum information, calculating the difference value between the reflected light frequency and the incident light frequency, and obtaining the vibration information of the scanning point according to the difference value; shooting the tested equipment by a visible light camera to obtain a visible light image; acquiring an angle between incident light and reflected light of a vibration point in the reflection spectrum information, and determining a projection position of the vibration point in a visible light image according to the angle; fusing the visible light image with vibration information; and obtaining the abnormal sound position of the tested equipment according to the vibration speed position distribution of the vibration points in the fusion image. According to the invention, the reflection spectrum information of the tested equipment and the visible light image are fused, and the abnormal sound of the tested equipment is accurately positioned according to the vibration information in the reflection spectrum information. However, the method is inconvenient to operate, data processing is needed later, and abnormal sound positions of the electrical equipment cannot be found timely and quickly.
The patent document with publication number CN 104316166A discloses a transformer substation abnormal sound video positioning method, wherein front-end sound collection equipment arranged on a transformer substation monitoring site collects switch cabinet sound and transmits the sound to a background server, the background server calls a sound function to analyze and judge the sound transmitted by the front-end sound collection equipment, if the analysis and judgment result shows that the sound is abnormal, equipment numbers, abnormal sound sample numbers and abnormal sound occurrence time are obtained, and further according to the abnormal equipment numbers, a stepping motor is driven to drive a 3G network camera to move to the position above the switch cabinet with problems for video recording, and the video recording is transmitted to the background server through a 3G network. The invention can reduce the workload of on-site daily operation inspection, discover and locate defects early, provide basis for the periodic inspection of equipment to be changed into state inspection, further reduce the occurrence of accidents and further improve the operation reliability of on-site equipment. However, the present invention also fails to solve the above-mentioned problems.
Disclosure of Invention
In view of the above, the invention provides the abnormal sound positioning method for the electrical equipment, which is simple and convenient to operate and can quickly position the abnormal sound of the electrical equipment, aiming at the defects of the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme: an abnormal sound positioning method for electrical equipment comprises the following steps:
s1: fixing a sounding instrument for measuring the frequency and intensity of specific sound at one end of the insulating rod so as to maintain a safe distance between an maintainer and equipment;
s2: when hearing the abnormal sound of the electrical equipment in the inspection process, measuring the sound frequency of the electrical equipment by using a sound wave detector, and filtering the abnormal sound frequency to be marked as f 0 ；
S3: in-situ acoustic wave detectorOn the other hand, the measurement frequency is adjusted to f 0 Intensity measurement is performed only on sound of that frequency;
s4: an maintainer stands at a measuring point outside the safety distance line, holds an insulating rod fixedly provided with a sound measuring instrument, approaches the sound measuring instrument to the equipment to be measured, moves back and forth near the equipment, and records the measured sound intensity as p;
s5: when the sounding device moves to a specific position at a certain moment, the intensity p of the sound is not increased any more, and the maximum value p is obtained max And judging that abnormal sound is sent out near the point, namely the potential fault point of the equipment.
Further, the sound measuring instrument is connected with the sound wave detector through a transmission wire.
Further, the sounding instrument is a sound receiving microphone.
Further, the end of the insulating rod is provided with a damping connecting piece, and the sound receiving microphone is arranged in the damping connecting piece.
Further, the shock attenuation connecting piece includes sleeve, inner tube, spring, connecting block one and connecting block two, set up in the sleeve the inner tube, the inner tube through a plurality of springs with telescopic link, the inner tube week side sets up a plurality of be used for fixing the first locking bolt of radio reception microphone, the sleeve lower part is fixed to be set up connecting block one, connecting block lower part with connecting block two articulates, connecting block two lower part sets up the jack, connecting block two sides sets up and is used for fixing the second locking bolt of insulator spindle.
Further, the first connecting block and one side of the second connecting block are connected through a pin shaft, a torsion spring is sleeved on the pin shaft, a limiting plate is arranged on the side face of the second connecting block, and a control opening and closing component is arranged between the first connecting block and the second connecting block.
Further, the control opening and closing component comprises an iron sheet arranged on the bottom surface of the connecting block, an electromagnet arranged on the two top surfaces of the connecting block, and a control switch arranged at the lower end of the insulating rod, wherein the control switch is connected with the electromagnet through a signal wire, the signal wire is arranged inside the insulating rod, and a wire clamp used for fixing the transmission wire is further arranged on the upper portion of the insulating rod.
Further, the sleeve is of a quadrangular shape, the inner wall of the sleeve is cylindrical, and the first connecting block is integrally connected with the sleeve.
Compared with the prior art, the invention has the following beneficial effects:
the method for positioning the abnormal sound of the electrical equipment adopts a method of frequency measurement and sound intensity positioning, and positions the abnormal sound of the electrical equipment according to the frequency and the loudness of the abnormal sound emitted by the electrical equipment so as to find potential fault points of the electrical equipment. The method can rapidly, accurately, quantitatively and objectively complete abnormal sound positioning of the electrical equipment, eliminates the influence of factors such as insufficient personnel experience, noise in the field environment and the like on the positioning process, can rapidly and accurately find potential fault points of the equipment, improves equipment maintenance efficiency, and ensures safe and stable operation of the system. The invention has simple application and simple and convenient operation, can be completed in the normal inspection process, and reduces the problems of incapability of distinguishing abnormal sound, inaccurate positioning and the like caused by external factors.
In addition, in order to improve the accuracy of abnormal sound positioning in the inspection process, the end part of the insulating rod is provided with a damping connecting piece, the sound receiving microphone is arranged in the inner cylinder and is fixed by tightening a plurality of first locking bolts, and the spring outside the inner cylinder can slow down the shaking of the insulating rod, so that the wind noise generated by shaking of the sound receiving microphone is reduced, and the sound receiving is more accurate; the lower part of shock attenuation connecting piece is provided with connecting block one and connecting block two through round pin hub connection, through the outage of control electro-magnet, makes connecting block one and connecting block two break away from the constraint that magnetism was inhaled, separates each other under the effect of torsional spring to under the effect of limiting plate, make radio microphone and insulator spindle mutually perpendicular, so that solve and meet the unable problem of detecting in equipment bending part in the inspection process, it is nimble convenient, improve inspection efficiency.
Drawings
FIG. 1 is a schematic view of a measuring apparatus according to a first embodiment of the present invention;
FIG. 2 is a diagram of a measurement method according to a first embodiment of the present invention;
FIG. 3 is a front view showing a closed state of a shock absorbing connector according to a second embodiment of the present invention;
FIG. 4 is a front view showing an opened state of a shock absorbing connector according to a second embodiment of the present invention;
FIG. 5 is a top view of a shock absorbing connector according to a second embodiment of the present invention;
FIG. 6 is a cross-sectional view of a shock absorbing connector in accordance with a third embodiment of the present invention;
fig. 7 is a partial cross-sectional view of a fourth embodiment of the present invention.
Detailed Description
For a better understanding of the present invention, the following examples are set forth to further illustrate the invention, but are not to be construed as limiting the invention. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without one or more of these details.
Example 1
As shown in fig. 1-2, the abnormal sound positioning method for the electrical equipment comprises the following steps:
s1: a sounding instrument 1 for measuring the frequency and intensity of a specific sound is fixed to one end of an insulating rod 2 so that an inspector maintains a safe distance from the equipment;
s2: when hearing the abnormal sound of the electrical equipment 5 in the process of inspection, the sound wave detector 4 is used for measuring the sound frequency of the electrical equipment, and the abnormal sound frequency is filtered and marked as f 0 ；
S3: on the acoustic wave detector 4, the measurement frequency is adjusted to f 0 Intensity measurement is performed only on sound of that frequency;
s4: the maintainer stands at the measuring point 7 outside the safety distance line 6, holds the insulating rod 2 fixed with the sounding instrument 1, moves the sounding instrument 1 back and forth near the equipment to be measured, and records the measured sound intensity as p;
s5: when the sounding device 1 moves to a specific position at a certain time, the intensity p of the sound is not increased any more, and the maximum is obtainedValue p max And judging that abnormal sound is sent out near the point, namely the potential fault point of the equipment.
In the embodiment of the invention, the sound meter 1 is connected with the acoustic wave detector 4 through the transmission wire 3, and the sound meter 1 is a radio microphone.
When the electrical equipment emits abnormal sound, the abnormal sound is a sound wave with a specific frequency. The instrument measures this specific frequency and locks on and measures this sound intensity. And keeping a safe distance, slowly approaching the sound receiving microphone to the abnormal sound equipment, and observing the intensity. The place with higher sound intensity is the abnormal sound emitting point, and whether potential safety hazards exist or not is judged through the structure of the electrical equipment. The method is simple and convenient to operate, reduces the influence of external factors (personnel experience, noise interference, safety distance limitation and the like), and can rapidly position the abnormal sound position of the electrical equipment so as to rapidly, accurately and rapidly analyze and judge whether the equipment has defects.
Example two
As shown in fig. 3 to 5, the abnormal sound positioning method for the electrical equipment comprises the following steps:
s1: fixing a sounding instrument for measuring the frequency and intensity of specific sound at one end of the insulating rod so as to maintain a safe distance between an maintainer and equipment;
s2: when hearing the abnormal sound of the electrical equipment in the inspection process, measuring the sound frequency of the electrical equipment by using a sound wave detector, and filtering the abnormal sound frequency to be marked as f 0 ；
S3: on the acoustic wave detector, the measurement frequency is adjusted to f 0 Intensity measurement is performed only on sound of that frequency;
s4: an maintainer stands at a measuring point outside the safety distance line, holds an insulating rod fixedly provided with a sound measuring instrument, approaches the sound measuring instrument to the equipment to be measured, moves back and forth near the equipment, and records the measured sound intensity as p;
s5: when the sounding device moves to a specific position at a certain moment, the intensity p of the sound is not increased any more, and the maximum value p is obtained max And judging that abnormal sound is sent out near the point, namely the potential fault point of the equipment.
In the embodiment of the invention, the end part of the insulating rod is provided with a damping connecting piece, and the radio microphone is arranged in the damping connecting piece.
The shock attenuation connecting piece includes sleeve 8, inner tube 9, spring 10, connecting block one 11 and connecting block two 12, sleeve 8's appearance is the quadrangular, and the inner wall is cylindricly, connecting block one 11 with sleeve 8 body coupling, set up in the sleeve 8 inner tube 9, inner tube 9 pass through four springs 10 with sleeve 8 is connected, inner tube 9 week side sets up four and is used for fixing the first lock bolt 13 of radio microphone, sleeve 8 lower part is fixed to be set up connecting block one 11, connecting block one 11 lower part with connecting block two 12 are articulated, connecting block two 12 lower part sets up the jack, connecting block two 12 side sets up and is used for fixing the second lock bolt 14 of insulator spindle 2.
The first connecting block 11 is connected with one side of the second connecting block 12 through a pin shaft, a torsion spring is sleeved on the pin shaft, a limiting plate 15 is arranged on the side face of the second connecting block 12, and a control opening and closing component is arranged between the first connecting block 11 and the second connecting block 12.
The control opening and closing component comprises an iron sheet 16 arranged on the bottom surface of the first connecting block 11, an electromagnet 17 arranged on the top surface of the second connecting block 12, and a control switch arranged at the lower end of the insulating rod 2, wherein the control switch is connected with the electromagnet through a signal wire, the signal wire is arranged inside the insulating rod, and a wire clamp 18 used for fixing the transmission wire 3 is further arranged on the upper portion of the insulating rod 2.
During inspection, the electric equipment has a safety distance, and the insulating rod is used as an auxiliary tool, but some electric equipment has a bent angle, and the radio microphone at the end part of the insulating rod cannot be in close contact, so in the embodiment of the invention, the first connecting block and the second connecting block are separated from the constraint of magnetic attraction by controlling the power failure of the electromagnet, are mutually separated under the action of the torsion spring, and are mutually perpendicular to the insulating rod under the action of the limiting plate, thereby solving the problem. In addition, because the first connecting block and the second connecting block are suddenly vertical, the transmission wire can be rapidly driven and is easy to damage, so that the transmission wire is fixed on the wire clamp and a certain length is reserved, and the wire is prevented from being broken.
Example III
As shown in fig. 6, the abnormal sound positioning method for electrical equipment according to the embodiment of the present invention is different from the second embodiment in that: the opening and closing control component comprises a rectangular hanging ring 19 arranged at the bottom of the first connecting block 11, a groove arranged on the top surface of the second connecting block 12, and a hanging piece arranged in the groove, wherein the hanging piece is clamped in the rectangular hanging ring.
The pendant includes montant 20, wedge link 21 and electric telescopic handle 22, montant 20 upper end sets up wedge link 21, wedge link 21's top surface is the cambered surface, montant 20 middle part through the axis body articulated in the both sides inner wall of recess, montant 20's lower extreme and level setting electric telescopic handle 22 swing joint, the insulator spindle lower part is equipped with and is used for controlling electric telescopic handle's switch.
In the embodiment of the invention, when the radio microphone is required to be used vertically with the insulating rod, the switch is pressed down to enable the electric telescopic rod to shrink, the wedge-shaped hanging head at the upper end of the vertical rod rotates outwards and is separated from the rectangular hanging ring, and the connecting block I and the sleeve rotate to a position vertical to the insulating rod under the action of the torsion spring and are fixed by the limiting plate.
Example IV
An abnormal sound positioning method for electrical equipment comprises the following steps:
s1: fixing a sounding instrument for measuring the frequency and intensity of specific sound at one end of the insulating rod so as to maintain a safe distance between an maintainer and equipment;
s2: when hearing the abnormal sound of the electrical equipment in the inspection process, measuring the sound frequency of the electrical equipment by using a sound wave detector, and filtering the abnormal sound frequency to be marked as f 0 ；
S3: on the acoustic wave detector, the measurement frequency is adjusted to f 0 Intensity measurement is performed only on sound of that frequency;
s4: an maintainer stands at a measuring point outside the safety distance line, holds an insulating rod fixedly provided with a sound measuring instrument, approaches the sound measuring instrument to the equipment to be measured, moves back and forth near the equipment, and records the measured sound intensity as p;
s5: when the sounding device moves to a specific position at a certain moment, the intensity p of the sound is not increased any more, and the maximum value p is obtained max And judging that abnormal sound is sent out near the point, namely the potential fault point of the equipment.
In the embodiment of the invention, the end part of the insulating rod is provided with a damping connecting piece, and the radio microphone is arranged in the damping connecting piece.
The damping connecting piece comprises a sleeve, an inner barrel, springs, a first connecting block and a second connecting block, wherein the outer shape of the sleeve is a quadrangular, the inner wall of the sleeve is cylindrical, the first connecting block is integrally connected with the sleeve, the inner barrel is internally provided with the inner barrel, the inner barrel is connected with the sleeve through four springs, four first locking bolts for fixing the radio microphone are arranged on the periphery of the inner barrel, the lower part of the sleeve is fixedly provided with the first connecting block, the lower part of the connecting block is hinged with the second connecting block, the lower part of the second connecting block is provided with an inserting hole, and the two side surfaces of the connecting block are provided with second locking bolts for fixing the insulating rod.
The first connecting block and one side of the second connecting block are connected through a pin shaft, a torsion spring is sleeved on the pin shaft, a limiting plate is arranged on the side face of the second connecting block, and a control opening and closing component is arranged between the first connecting block and the second connecting block.
The opening and closing control component comprises a rectangular hanging ring arranged at the bottom of the first connecting block, a groove arranged on the two top surfaces of the connecting block, and a hanging piece arranged in the groove, and the hanging piece is clamped in the rectangular hanging ring.
As shown in fig. 7, the abnormal sound positioning method for electrical equipment according to the embodiment of the present invention is different from the third embodiment in that:
the pendant comprises a vertical rod 20, a wedge-shaped hanging head 21, a straight spring 22, a limiting block 23 and a fixed pulley 24, wherein the wedge-shaped hanging head 21 is arranged at the upper end of the vertical rod 20, the top surface of the wedge-shaped hanging head 21 is an arc surface, the middle part of the vertical rod 20 is hinged to the inner walls of two sides of a groove through a shaft body, the limiting block 23 is arranged on one side of the vertical rod 20, a through hole is formed in the limiting block 23, the limiting block 23 and the vertical rod 20 are connected through the straight spring 22, the fixed pulley 24 is arranged on one side of the limiting block 23, a rope 25 is connected to the lower end of the vertical rod 20, the other end of the rope 25 sequentially penetrates out of the straight spring 22 and the through hole, and after the fixed pulley 24 is hung, the rope 25 penetrates out of a middle hole of a bottom plate of the insulating rod 2, and a cylindrical handle 26 is fixed at the end of the rope 25.
In the embodiment of the invention, when the radio microphone is required to be used vertically with the insulating rod, the cylindrical handle is pulled downwards, the rope pulls the lower end of the vertical rod, and the wedge-shaped hanging head is separated from the rectangular hanging ring, so that the first connecting block and the second connecting block are mutually vertical under the action of the torsion spring and the limiting plate, the radio microphone is convenient to collect abnormal sound information at the corner of the power equipment, the cylindrical handle is loosened, the straight spring is restored to the original state, the vertical rod is kept in the vertical state continuously, and when the first connecting block and the second connecting block are required to be butted, the second connecting block is only required to be pressed, and the rectangular hanging ring 19 and the wedge-shaped hanging head are mutually clamped. The opening and closing control component provided by the embodiment of the invention is convenient to operate, does not need an electric element, and is low in processing cost.
Finally, it is noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and that other modifications and equivalents thereof by those skilled in the art should be included in the scope of the claims of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (8)
1. An abnormal sound positioning method for electrical equipment is characterized by comprising the following steps of: the method comprises the following steps:
s1: fixing a sounding instrument for measuring the frequency and intensity of specific sound at one end of the insulating rod so as to maintain a safe distance between an maintainer and equipment;
s2: when hearing the abnormal sound of the electrical equipment in the inspection process, measuring the sound frequency of the electrical equipment by using a sound wave detector, and filteringThe abnormal sound frequency is marked as f 0 ；
S3: on the acoustic wave detector, the measurement frequency is adjusted to f 0 Intensity measurement is performed only on sound of that frequency;
s4: an maintainer stands at a measuring point outside the safety distance line, holds an insulating rod fixedly provided with a sound measuring instrument, approaches the sound measuring instrument to the equipment to be measured, moves back and forth near the equipment, and records the measured sound intensity as p;
s5: when the sounding device moves to a specific position at a certain moment, the intensity p of the sound is not increased any more, and the maximum value p is obtained max And judging that abnormal sound is sent out near the point, namely the potential fault point of the equipment.
2. The electrical device abnormal sound positioning method according to claim 1, wherein: the sound measuring instrument is connected with the sound wave detector through a transmission wire.
3. The electrical device abnormal sound positioning method according to claim 2, wherein: the sounding instrument is a sound receiving microphone.
4. The electrical device abnormal sound positioning method according to claim 3, wherein: the end of the insulating rod is provided with a damping connecting piece, and the radio microphone is arranged in the damping connecting piece.
5. The electrical device abnormal sound positioning method according to claim 4, wherein: the damping connecting piece comprises a sleeve, an inner barrel, a spring, a first connecting block and a second connecting block, wherein the inner barrel is arranged in the sleeve, the inner barrel is connected with the sleeve through a plurality of springs, a plurality of first locking bolts used for fixing the radio microphone are arranged on the periphery of the inner barrel, the first connecting block is fixedly arranged on the lower portion of the sleeve, the lower portion of the first connecting block is hinged to the second connecting block, a jack is arranged on the lower portion of the second connecting block, and a second locking bolt used for fixing the insulating rod is arranged on the two side face of the second connecting block.
6. The electrical device abnormal sound positioning method according to claim 5, wherein: the first connecting block and one side of the second connecting block are connected through a pin shaft, a torsion spring is sleeved on the pin shaft, a limiting plate is arranged on the side face of the second connecting block, and a control opening and closing component is arranged between the first connecting block and the second connecting block.
7. The electrical device abnormal sound positioning method according to claim 6, wherein: the control opening and closing component comprises an iron sheet arranged on the bottom surface of the connecting block, an electromagnet arranged on the two top surfaces of the connecting block, and a control switch arranged at the lower end of the insulating rod, wherein the control switch is connected with the electromagnet through a signal wire, the signal wire is arranged inside the insulating rod, and a wire clamp used for fixing the transmission wire is further arranged on the upper portion of the insulating rod.
8. The electrical device abnormal sound positioning method according to claim 7, wherein: the sleeve is of a quadrangular shape, the inner wall of the sleeve is cylindrical, and the first connecting block is integrally connected with the sleeve.
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| 动车组异音异响故障分析及监测系统设计;郭展宏 等;陕西理工大学学报( 自然科学版);第35卷(第2期);第50-55页 * |
| 超声局部放电检测技术在SF_6罐式断路器故障诊断中的应用;张伟 等;广西电力;第39卷(第02期);第78-81页 * |
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| CN113204012A (en) | 2021-08-03 |
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