CN112014683B - Dewar noise reduction auscultation device for fault location of high-voltage cable - Google Patents
Dewar noise reduction auscultation device for fault location of high-voltage cable Download PDFInfo
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- CN112014683B CN112014683B CN202010776191.6A CN202010776191A CN112014683B CN 112014683 B CN112014683 B CN 112014683B CN 202010776191 A CN202010776191 A CN 202010776191A CN 112014683 B CN112014683 B CN 112014683B
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- 238000002555 auscultation Methods 0.000 title claims abstract description 20
- 230000009467 reduction Effects 0.000 title claims abstract description 18
- 239000002689 soil Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000004807 localization Effects 0.000 claims 7
- 230000000694 effects Effects 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000003321 amplification Effects 0.000 description 4
- 235000013372 meat Nutrition 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
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- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
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- 238000007906 compression Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01R31/1227—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 of components, parts or materials
- G01R31/1263—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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Locating Faults (AREA)
Abstract
The invention relates to a Dewar noise reduction auscultation device for fault location of a high-voltage cable, which comprises: the tube body is axially provided with a cavity, and a tuning fork component is arranged in the cavity; the upper end of the pickup assembly penetrates through the lower end of the pipe body along the axial direction of the pipe body and then is connected with the tuning fork assembly; the lower extreme of pickup subassembly passes the chassis subassembly, and the axial displacement of pickup subassembly along the chassis subassembly. The proposal provided by the application is convenient for effectively picking up soft soil, hardened and smooth or uneven ground, then the tuning fork component is used for carrying out tone, thus obtaining the best pick-up resonance, improving the pick-up sensitivity, and finally, because the cavity of the tube body is in a vacuum state, the sound-absorbing device has the advantages that sound outside is well isolated and transmitted into the pipe body, the noise-absorbing effect is achieved, the pick-up recognition accuracy is improved, sound generated by breakdown of fault points caused by applying pulse cables to the cable lines is effectively picked up, and therefore fault point positioning is achieved.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a Dewar noise reduction auscultation device for fault location of a high-voltage cable.
Background
At present, because the length of a high-voltage cable line with the voltage level of 110kV and above is long, when the line fails, the emergency repair electric work can be carried out only by accurately positioning the failure point.
In the fault point positioning process, when the fault point is invalid due to the adoption of multiple pulses, pulse voltage is generally applied to a cable line to enable the fault point to break down, and the electromagnetic sound wave method is used for performing sound effect auscultation positioning on the line, but the method is easily influenced by sound waves from space, particularly when surrounding noise is large in daytime, the fault positioning is difficult, and the rush repair time is prolonged.
Disclosure of Invention
Accordingly, it is necessary to provide a Dewar noise reduction auscultation device for fault location of high voltage cable, which solves the problem that the existing fault location is easily affected by sound waves from space, and thus the fault location is difficult.
The invention provides a Dewar noise reduction auscultation device for fault location of a high-voltage cable, which comprises:
the pipe body is axially provided with a cavity, and the cavity is in a vacuum state;
a tuning fork assembly disposed within the cavity;
the upper end of the pickup assembly penetrates through the lower end of the tube body along the axial direction of the tube body and then is connected with the tuning fork assembly;
the device comprises a chassis assembly, wherein the chassis assembly is used for being in contact with a flat ground or an uneven ground, the lower end of the pickup assembly penetrates through the chassis assembly, and the pickup assembly can move along the axial direction of the chassis assembly.
Above-mentioned Dewar auscultation device of making an uproar falls in high tension cable fault location when needs carry out the pickup to soft soil ground, adjust the distance between pickup assembly's lower extreme and the chassis subassembly, make pickup assembly's lower extreme stretch out the chassis subassembly and insert in the soft soil layer, alright pick up soft soil layer's sound, or when needs carry out the pickup to the level or uneven ground of hardening, adjust the distance between pickup assembly's lower extreme and the chassis subassembly, make pickup assembly's lower extreme be arranged in the chassis subassembly, at this moment, the chassis subassembly just can carry out effectual pickup to the level or uneven ground of hardening, then rethread tuning fork subassembly carries out the tone, can obtain best pickup resonance, improve pickup sensitivity, finally because be the vacuum state in the cavity of body, have fine isolated outside sound conduction to the body, the noise elimination effect has been realized, and then improve pickup recognition accuracy, realize effectual pick up and exert the sound that pulse cable causes the fault point breakdown to take place at the cable line, thereby realize fault point location. The device has the advantages of no electron and no part, high reliability, simple manufacture, low price and higher popularization and application value.
In one embodiment, the tube body comprises a Dewar inner tube, a Dewar outer tube, a bottom seal ring, a top seal ring, and an earcap;
the Dewar inner tube is sleeved in the Dewar outer tube, the bottom sealing ring is arranged at the lower end of the Dewar outer tube, the top sealing ring is arranged at the upper end of the Dewar outer tube, and the earcaps are arranged on the top sealing ring.
In one embodiment, the tube further comprises a vacuum nozzle disposed on the top seal ring, and one end of the vacuum nozzle is in communication with an inner cavity formed between the dewar inner tube and the dewar outer tube.
In one embodiment, the tuning fork assembly comprises a tuning fork bar, a tuning fork tuning-tuning slider and a spring plate disposed in the dewar inner tube, the tuning fork bar being connected to the pickup assembly;
the tuning fork is arranged at the upper end of the tuning fork rod, the tuning fork frequency modulation sliding block is arranged on the tuning fork, and the spring piece is arranged on the tuning fork frequency modulation sliding block.
In one embodiment, the pickup assembly includes a pickup bar, the upper end of which passes through the bottom seal ring and is connected to the tuning fork bar.
In one embodiment, the pickup assembly further comprises a support ring and a foot peg, the support ring is sleeved on the pickup bar, and the foot peg is disposed on the support ring along an axial direction perpendicular to the pickup bar.
In one embodiment, the chassis assembly includes a pickup chassis, a pickup chassis post, a pickup feeler, and an adjustment member;
the pick-up chassis post sets up along the axial the upper surface of pick-up chassis, the lower extreme of pick-up stick passes in proper order the pick-up chassis post behind the pick-up chassis with the pick-up chassis post is connected, the pick-up tentacle sets up on the pick-up chassis, the regulating part with the pick-up tentacle cooperatees, is used for adjusting the pick-up tentacle keep away from the one end of pick-up chassis with distance between the pick-up chassis, so that the pick-up tentacle can with ground contact.
In one embodiment, the pickup chassis is provided with a plurality of through holes along the axial direction of the pickup chassis, the through holes comprise a second through hole and a third through hole which are coaxially arranged, the second through hole is positioned above the third through hole, and the diameter of the second through hole is larger than that of the third through hole;
when the pickup feeler is correspondingly arranged in the through hole, the bulge on the side surface of the pickup feeler is matched with the second through hole, and the pickup feeler below the bulge stretches out after penetrating through the third through hole.
In one embodiment, the adjusting member includes an elastic member and a pickup tray cover;
the pick-up disc cover sets up the upper surface of pick-up chassis, the elastic component is located in the second through-hole, just the one end of elastic component with the upper end butt of pick-up tentacle, the other end of elastic component with the pick-up disc cover orientation the one side butt of pick-up chassis.
In one embodiment, the chassis assembly further comprises a second fastener that mates with the pickup chassis post;
when the lower extreme of pickup stick passes in proper order behind the pickup chassis post the pickup chassis, the second fastener is used for with the pickup stick fastening is in on the pickup chassis post.
Drawings
Fig. 1 is a schematic structural diagram of a dewar noise reduction auscultation device for fault location of a high voltage cable according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of the explosive structure of the pipe body in FIG. 1;
FIG. 4 is an enlarged view of a portion of FIG. 3;
FIG. 5 is an exploded view of the pickup assembly of FIG. 1;
FIG. 6 is a schematic view of the chassis assembly of FIG. 1;
FIG. 7 is a schematic diagram of the explosive structure of FIG. 6;
FIG. 8 is a cross-sectional view of FIG. 6;
FIG. 9 is a schematic view of the tuning fork assembly of FIG. 1.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
As shown in fig. 1 and 2, in one embodiment of the present invention, there is provided a dewar noise reduction auscultation device for fault location of a high voltage cable, comprising: the pipe body 10, tuning fork subassembly 40, pickup subassembly 20 and chassis subassembly 30, wherein, pipe body 10 is provided with the cavity along the axial, is the vacuum state in the cavity, and tuning fork subassembly 40 sets up in the cavity, and behind the lower extreme of pipe body 10 was passed along the axial of pipe body 10 to the upper end of pickup subassembly 20, was connected with tuning fork subassembly 40, and chassis subassembly 30 is passed to the lower extreme of pickup subassembly 20, and pickup subassembly 20 can follow the axial displacement of chassis subassembly 30, is used for below the chassis subassembly 30 with level ground or uneven ground contact.
By adopting the technical scheme, when the soft ground needs to be picked up, the distance between the lower end of the pickup assembly and the chassis assembly is adjusted, the lower end of the pickup assembly extends out of the chassis assembly and is inserted into the soft soil layer, sound of the soft soil layer can be picked up, or when the hardened flat or uneven ground needs to be picked up, the distance between the lower end of the pickup assembly and the chassis assembly is adjusted, the lower end of the pickup assembly is positioned in the chassis assembly, at the moment, the chassis assembly can effectively pick up the hardened flat or uneven ground, then the tuning fork assembly is used for conducting tone, the optimal pickup resonance can be obtained, the pickup sensitivity is improved, finally, due to the fact that the cavity of the pipe body is in a vacuum state, sound outside is well isolated is conducted into the pipe body, the noise elimination effect is achieved, further the pickup identification accuracy is improved, sound generated when a pulse cable is applied to a cable line is effectively picked up, and fault point location is achieved. The device has the advantages of no electron and no part, high reliability, simple manufacture, low price and higher popularization and application value.
In some embodiments, as shown in fig. 3, the tube body 10 includes a dewar inner tube 101, a dewar outer tube 102, a bottom sealing ring 103, a top sealing ring 104, and an ear cap 105, wherein the dewar inner tube 101 is sleeved in the dewar outer tube 102, the bottom sealing ring 103 is disposed at the lower end of the dewar outer tube 102, the top sealing ring 104 is disposed at the upper end of the dewar outer tube 102, and the ear cap 105 is disposed on the top sealing ring 104.
Specifically, as shown in fig. 3 and 4, the bottom sealing ring 103 in the present application is screwed on the lower end of the outer dewar tube 102, for sealing the lower end of the outer dewar tube 102, the top sealing ring 104 is screwed on the upper end of the outer dewar tube 102, the top sealing ring 104 is provided with a through hole, and the earcap 105 is provided on the through hole of the top sealing ring 104, for sealing the top sealing ring 104.
In some embodiments, in order to evacuate the cavity formed between the outer wall of the inner dewar tube 101 and the inner wall of the outer dewar tube 102, a dewar noise reduction structure is formed, and then sound of a good insulation outside is transmitted to the inner dewar tube 101, as shown in fig. 4, the tube 10 in the present application further includes a vacuum air nozzle 106, where the vacuum air nozzle 106 is disposed on the top sealing ring 104, and one end of the vacuum air nozzle 106 is communicated with the cavity formed between the inner dewar tube 101 and the outer dewar tube 102.
Specifically, as shown in fig. 4, the top sealing ring 104 is further provided with a connecting hole (not indicated in the figure), and the vacuum nozzle 106 is mounted on the connecting hole, so that when the cavity formed between the outer wall of the inner dewar tube 101 and the inner wall of the outer dewar tube 102 needs to be vacuumized, the cavity formed between the outer wall of the inner dewar tube 101 and the inner wall of the outer dewar tube 102 can be vacuumized only by connecting the vacuum nozzle 106 with a vacuum pump, thereby realizing the noise elimination function.
It should be noted that, the vacuum air tap connection structure in the embodiment of the present application is only an example, and in other alternative solutions, other structures may be adopted, for example, a mounting hole is provided on a side wall of the dewar outer tube, and the vacuum air tap is mounted on the mounting hole. The connection structure of the vacuum nozzle is not particularly limited, and the purpose of the application can be achieved by the structure.
In some embodiments, as shown in FIG. 9, tuning fork assembly 40 in the present application includes a tuning fork bar 401 disposed in dewar inner tube 101, a tuning fork 402, a tuning fork slider 403, and a spring plate 404, wherein tuning fork 402 is disposed at an upper end of tuning fork bar 401, tuning fork slider 403 is disposed on tuning fork 402, and spring plate 404 is disposed on tuning fork slider 403. The tuning fork assembly is prior art and will not be discussed further herein.
In some embodiments, as shown in fig. 5, the pickup assembly 20 in the present application includes a pickup stick 201, where the upper end of the pickup stick 201 passes through the bottom seal ring 103 and is connected to a tuning fork 401, after the pickup stick 201 acquires sound, the sound can be transferred to a tuning fork 402 through the tuning fork 401, then the sound is propagated through resonance amplification of the tuning fork 402, and finally the sound picked up by the pickup stick 201 can be clearly heard by attaching the meat ear to the earcap 105.
In some embodiments, to facilitate insertion of the pickup bar 201 into the soft soil layer, the pickup assembly 20 further includes a support ring 202 and a peg 203, the support ring 202 is sleeved on the pickup bar 201, and the peg 203 is disposed on the support ring 202 along an axial direction perpendicular to the pickup bar 201.
Specifically, as shown in fig. 5, a first through hole 2021 is formed in the support ring 202 along the axial direction of the pick-up rod 201, meanwhile, a plurality of threaded holes are formed in the side wall of the support ring 202 along the axial direction perpendicular to the pick-up rod 201, a groove 2011 is formed in the side wall of the pick-up rod 201 along the radial direction of the pick-up rod 201, when the pick-up rod 201 passes through the first through hole 2021, and the groove 2011 on the pick-up rod 201 corresponds to the position of the support ring 202, the first fastener 204 passes through the threaded holes on the side wall of the support ring 202 and then extends into the groove 2011, so that the support ring 202 can be fixed on the pick-up rod 201, and at this time, the pins 203 are mounted in other threaded holes on the side wall of the support ring 202.
When the pick-up stick is used, the external force acts on the foot nails 203, so that the foot nails 203 are subjected to downward acting force, and the support ring 202 is fixed on the pick-up stick 201, so that the force acting on the foot nails 203 can be transmitted to the pick-up stick 201 through the support ring 202, and the lower end of the pick-up stick 201 is inserted into a soft soil layer.
Further, as shown in fig. 5, the first fastener 204 is a bolt, an external thread is provided on one end of the pin 203, four threaded holes are uniformly provided on the side wall of the support ring 202 along the axial direction perpendicular to the pickup rod 201, the first fastener 204 and the pin 203 are sequentially connected in the threaded holes of the pickup rod 201 at intervals, and the first fastener 204 can extend into the groove 2011 after passing through the corresponding threaded holes.
It should be noted that the structure of fixing the support ring to the pickup rod by the first fastener in the above embodiment is merely an example, and in other alternatives, other structures may be used, for example, the first through hole on the support ring is in interference fit with the pickup rod. The connection structure of the support ring and the pickup rod is not particularly limited, and the purpose of the application can be achieved by the structure.
In some embodiments, in order to facilitate the contact between the chassis assembly 30 and a flat ground or an uneven ground, as shown in fig. 6, the chassis assembly 30 includes a pickup chassis 301, a pickup chassis post 303, a pickup feeler 304, and an adjusting member, where the pickup chassis post 303 is axially disposed on an upper surface of the pickup chassis 301, a lower end of the pickup wand 201 sequentially passes through the pickup chassis post 303 and the pickup chassis post 301 and then is connected to the pickup chassis post 303, the pickup feeler 304 is disposed on the pickup chassis 301, and the adjusting member is engaged with the pickup feeler 304 to adjust a distance between an end of the pickup feeler 304 away from the pickup chassis 301 and the pickup chassis 301, so that the pickup feeler 304 can contact the ground.
Specifically, as shown in fig. 8, the pickup chassis 301 and the pickup chassis column 303 in the present application are integrally molded, and this pickup chassis column 303 is provided on the upper surface of the pickup chassis 301 in the axial direction from the third through hole 3012 to the second through hole 3011, while the pickup chassis column 303 is provided with a fourth through hole 3032 in the axial direction thereof. When the pickup bar 201 is mounted, the pickup bar 201 is simply passed through the fourth through hole 3032 of the pickup chassis post 303 and then passed through the chassis 301.
When the soft soil is required to be picked up, the distance between the lower end of the pickup stick 201 and the bottom surface of the pickup chassis 301 is adjusted so that the distance between the lower end of the pickup stick 201 and the bottom surface of the pickup chassis 301 is larger than the distance between the lower end of the pickup feeler 304 and the bottom surface of the pickup chassis 301, then the lower end of the pickup stick 201 is inserted into the soft soil layer, sound of the soft soil layer picked up by the pickup stick 201 is transmitted to the tuning fork stick 401, then transmitted to the tuning fork 402 through the tuning fork stick 401, and then transmitted through the tuning fork 402 in a resonance amplification mode, and finally the sound picked up by the pickup stick 201 can be clearly heard by the meat ear closely attached to the earcap 105; when the hardened and smooth or uneven ground needs to be picked up, the distance between the lower end of the pickup stick 201 and the bottom surface of the pickup chassis 301 is adjusted, so that the distance between the lower end of the pickup stick 201 and the bottom surface of the pickup chassis 301 is smaller than the distance between the lower end of the pickup feeler 304 and the bottom surface of the pickup chassis 301, at the moment, the pickup feeler 304 is matched with the pickup feeler 304 through the adjusting piece, so that one end of the pickup feeler 304 far away from the pickup chassis 301 can be contacted with the ground, then the sound of the hardened and smooth or uneven ground picked up by the pickup feeler 304 is transferred onto the tuning fork stick 401 through the pickup stick 201, transferred onto the tuning fork 402 through the tuning fork stick 401, and then resonantly amplified and propagated through the tuning fork 402, and finally the sound picked up by the pickup stick 201 can be clearly heard by the meat ear attached to the earcap 105.
Further, as shown in fig. 7 and 8, the pickup chassis 301 is provided with a plurality of through holes in the axial direction of the pickup chassis 301, the through holes include a second through hole 3011 and a third through hole 3012 which are coaxially provided, the second through hole 3011 is located above the third through hole 3012, and the diameter of the second through hole 3011 is larger than that of the third through hole 3012 after the pickup feeler 304 is correspondingly provided in the through hole, the protrusion 3041 on the side of the pickup feeler 304 is engaged with the second through hole 3011, and the pickup feeler 304 located below the protrusion 3041 protrudes after passing through the third through hole 3012.
In some embodiments, the adjusting member in the present application includes an elastic member 305 and a pickup cover 306, where the elastic member 305 may be a compression spring, the pickup cover 306 is disposed on the upper surface of the pickup chassis 301, the elastic member 305 is located in the second through hole 3011, and one end of the elastic member 305 abuts against the upper end of the pickup feeler 304, and the other end of the elastic member 305 abuts against a surface of the pickup cover 306 facing the pickup chassis 301.
Specifically, as shown in fig. 6 to 8, the above-described pickup base cover 306 is provided with a fifth through hole 3061 in its axial direction, the fifth through hole 3061 corresponding to the outer diameter of the pickup base column 303. When the integral device is installed, after the pickup feeler 304 is placed in the second through hole 3011, the elastic piece 305 is placed at the upper end of the pickup feeler 304, then the pickup tray cover 306 is covered on the pickup tray 301 after passing through the pickup tray column 303, finally the pickup tray cover 306 is fixed on the pickup tray 301 after passing through the threaded hole on the pickup tray cover 306 and the threaded hole 3013 on the pickup tray 301 in sequence by using the bolt 307, at this time, one end of the elastic piece 305 is abutted with the upper end of the pickup feeler 304, and the other end of the elastic piece 305 is abutted with one surface of the pickup tray cover 306 facing the pickup tray 301.
When the device is used, the plurality of pickup feelers 304 are firstly contacted with the ground, and if the ground is flat, all the pickup feelers 304 can be well contacted with the ground under the acting force of the elastic piece 305 to pick up the sound; in the case of uneven ground, by pressing down the pickup base 301, the pickup feeler 304 in the pickup base 301 presses the elastic member 305 under the action of external force, so that all the pickup feelers 304 can be brought into good contact with the ground, the device is moved away after the ground pickup is completed, and the pickup feeler is restored to the initial position under the action of the internal elastic piece.
It should be noted that the structure of the pickup disc cover and the pickup chassis connected by the bolts in the embodiment of the present application is merely an example, and in other alternative solutions, other structures may be adopted, for example, the pickup disc cover is mounted on the pickup chassis by a buckle. The connection structure of the pickup disc cover and the pickup chassis is not particularly limited in this application, as long as the above structure can achieve the object of this application.
In some embodiments, when the pickup bar 201 passes through the fourth through hole 3032 on the pickup chassis post 303 and then passes through the chassis 301, for convenience, the pickup bar 201 and the pickup chassis post 303 are fixed in position, as shown in fig. 7 and 8, and the chassis assembly 30 in the present application further includes a second fastener 302, where the second fastener 302 is matched with the pickup chassis post 303, and when the lower end of the pickup bar 201 passes through the pickup chassis post 303 and the pickup chassis 301 in sequence, the second fastener 302 is used to fasten the pickup bar 201 on the pickup chassis post 303.
Specifically, the pickup chassis column 303 is provided with a connecting hole 3031 along an axial direction perpendicular to the pickup chassis column 303, and a plurality of threaded holes are formed in the side wall of the pickup rod 201 along an axial direction thereof at intervals, and when the lower end of the pickup rod 201 sequentially passes through the pickup chassis column 303 and the pickup chassis 301, the lower end of the pickup rod 201 is connected with the threaded holes in the side wall of the pickup rod 201 after passing through the connecting hole 3031 by a second fastener 302, for example, a bolt, so that the relative position of the pickup rod 201 and the pickup chassis column 303 can be fixed.
It should be noted that, in this embodiment of the present application, the structure of fixing the relative position of the pickup rod and the pickup chassis column by using the bolt is merely an example, and in other alternative schemes, other structures may be adopted, for example, an internal thread is provided on the inner wall of the fourth through hole on the pickup chassis column, an external thread is provided on the pickup rod, and the pickup rod is in threaded connection with the pickup chassis column. This application does not make special limitation to the connection structure of pickup stick and pickup chassis post, as long as above-mentioned structure can realize the purpose of this application alright.
In summary, when the device is used, when the soft soil is required to be picked up, the relative position of the pickup stick 201 and the pickup chassis column 303 is adjusted by rotating the second fastener 302, so that the distance between the lower end of the pickup stick 201 and the bottom surface of the pickup chassis 301 can be adjusted, the distance between the lower end of the pickup stick 201 and the bottom surface of the pickup chassis 301 is larger than the distance between the lower end of the pickup feeler 304 and the bottom surface of the pickup chassis 301, then the lower end of the pickup stick 201 is inserted into the soft soil layer, the sound of the soft soil layer picked up by the pickup stick 201 is transferred to the tuning fork stick 401, then transferred to the tuning fork 402 through the tuning fork stick 401, and finally transferred through the resonance amplification of the tuning fork 402, and finally the sound picked up by the pickup stick 201 can be clearly heard by the earpieces attached to the earcaps 105;
when the hardened flat or uneven ground needs to be picked up, the relative position of the pickup rod 201 and the pickup chassis column 303 is adjusted by rotating the second fastener 302, so that the distance between the lower end of the pickup rod 201 and the bottom surface of the pickup chassis 301 can be adjusted, the distance between the lower end of the pickup rod 201 and the bottom surface of the pickup chassis 301 is smaller than the distance between the lower end of the pickup feeler 304 and the bottom surface of the pickup chassis 301, at the moment, a plurality of pickup feelers 304 are contacted with the ground, and if the ground is flat, all the pickup feeler 304 can be well contacted with the ground under the acting force of the elastic piece 305; when the ground is uneven, the pickup rod 201 is driven to move downwards through the foot nails 203, the pickup rod 201 drives the pickup chassis 301 to move downwards, the pickup feeler 304 in the pickup chassis 301 extrudes the elastic piece 305 under the action of external force, so that all the pickup feeler 304 can be in good contact with the ground to pick up the ground, after the ground pickup is finished, the pickup feeler 304 can transfer the picked-up and hardened sound of the even or uneven ground to the tuning fork rod 401 through the pickup rod 201, then transfer the sound to the tuning fork 402 through the tuning fork rod 401, then spread through resonance amplification of the tuning fork 402, and finally the sound picked up by the pickup rod 201 can be clearly heard by the meat ear attached to the earcaps 105.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. Dewar noise reduction auscultation device for high-voltage cable fault location is characterized by comprising:
the pipe body (10), the pipe body (10) is axially provided with a cavity, and the cavity is in a vacuum state;
a tuning fork assembly (40), the tuning fork assembly (40) being disposed within the cavity;
the upper end of the pickup assembly (20) penetrates through the lower end of the pipe body (10) along the axial direction of the pipe body (10) and then is connected with the tuning fork assembly (40);
-a chassis assembly (30) for contact with a level ground or an uneven ground underneath the chassis assembly (30), the lower end of the pickup assembly (20) passing through the chassis assembly (30), and the pickup assembly (20) being movable in an axial direction of the chassis assembly (30);
when the soft ground is required to be picked up, the distance between the lower end of the pickup assembly (20) and the chassis assembly (30) is adjusted so that the lower end of the pickup assembly (20) extends out of the chassis assembly (30) and is inserted into a soft soil layer to pick up the sound of the soft soil layer;
when it is desired to pick up a hardened flat or uneven ground, the distance between the lower end of the pickup assembly (20) and the chassis assembly (30) is adjusted such that the lower end of the pickup assembly (20) is located in the chassis assembly (30) to pick up the hardened flat or uneven ground through the chassis assembly (30).
2. The Dewar noise reduction auscultation device for high voltage cable fault localization of claim 1 wherein the tube body (10) comprises a Dewar inner tube (101), a Dewar outer tube (102), a bottom seal ring (103), a top seal ring (104) and an ear cap (105);
the Dewar inner tube (101) is sleeved in the Dewar outer tube (102), the bottom sealing ring (103) is arranged at the lower end of the Dewar outer tube (102), the top sealing ring (104) is arranged at the upper end of the Dewar outer tube (102), and the earcaps (105) are arranged on the top sealing ring (104).
3. The Dewar noise reduction auscultation device for high voltage cable fault location of claim 2 wherein the tube body (10) further comprises a vacuum air tap (106), the vacuum air tap (106) is disposed on the top seal ring (104), and one end of the vacuum air tap (106) is in communication with an inner cavity formed between the Dewar inner tube (101) and the Dewar outer tube (102).
4. A dewar noise reducing auscultation device for fault localization of high voltage cables according to claim 2 or 3, characterized in that the tuning fork assembly (40) comprises a tuning fork bar (401), a tuning fork (402), a tuning fork tuning block (403) and a spring plate (404) arranged in the dewar inner tube (101), the tuning fork bar (401) being connected to the pickup assembly (20);
the tuning fork (402) is arranged at the upper end of the tuning fork rod (401), the tuning fork tuning slider (403) is arranged on the tuning fork (402), and the spring piece (404) is arranged on the tuning fork tuning slider (403).
5. The Dewar noise reduction auscultation device for high voltage cable fault localization of claim 4, wherein the pickup assembly (20) comprises a pickup bar (201), and an upper end of the pickup bar (201) is connected to the tuning fork bar (401) after passing through the bottom seal ring (103).
6. The Dewar noise reduction auscultation device for high voltage cable fault location according to claim 5, wherein the pickup assembly (20) further comprises a support ring (202) and a foot peg (203), the support ring (202) is sleeved on the pickup bar (201), and the foot peg (203) is arranged on the support ring (202) along an axial direction perpendicular to the pickup bar (201).
7. The dewar noise reduction auscultation device for high voltage cable fault localization according to claim 5, characterized in that the chassis assembly (30) comprises a pickup chassis (301), a pickup chassis column (303), a pickup feeler (304) and an adjusting member;
pick-up chassis post (303) are in along the axial setting pick-up chassis (301)'s upper surface, the lower extreme of pick-up stick (201) is passed in proper order pick-up chassis post (303) pick-up chassis (301) back with pick-up chassis post (303) are connected, pick-up tentacle (304) set up on pick-up chassis (301), the regulating part with pick-up tentacle (304) cooperate, are used for adjusting pick-up tentacle (304) are kept away from pick-up chassis (301) one end with distance between pick-up chassis (301), so that pick-up tentacle (304) can with ground contact.
8. The dewar noise reduction auscultation device for high voltage cable fault localization according to claim 7, characterized in that the pickup chassis (301) is provided with a plurality of through holes along an axial direction of the pickup chassis (301), the through holes include a second through hole (3011) and a third through hole (3012) coaxially provided, the second through hole (3011) is located above the third through hole (3012), and a diameter of the second through hole (3011) is larger than a diameter of the third through hole (3012);
when the pickup feeler (304) is correspondingly arranged in the through hole, the bulge (3041) on the side surface of the pickup feeler (304) is matched with the second through hole (3011), and the pickup feeler (304) below the bulge (3041) penetrates through the third through hole (3012) and then stretches out.
9. The dewar noise reduction auscultation device for high voltage cable fault localization according to claim 8, wherein the adjusting member comprises an elastic member (305) and a pickup disc cover (306);
pick-up disc cover (306) set up the upper surface of pick-up chassis (301), elastic component (305) are located in second through-hole (3011), just one end of elastic component (305) with pick-up antenna (304)'s upper end butt, the other end of elastic component (305) with pick-up disc cover (306) orientation pick-up chassis (301) one side butt.
10. The dewar noise reduction auscultation device for high voltage cable fault localization according to claim 7, characterized in that said chassis assembly (30) further comprises a second fastener (302), said second fastener (302) cooperating with said pickup chassis post (303);
after the lower end of the pickup rod (201) sequentially passes through the pickup chassis column (303) and the pickup chassis (301), the second fastener (302) is used for fastening the pickup rod (201) to the pickup chassis column (303).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010776191.6A CN112014683B (en) | 2020-08-05 | 2020-08-05 | Dewar noise reduction auscultation device for fault location of high-voltage cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010776191.6A CN112014683B (en) | 2020-08-05 | 2020-08-05 | Dewar noise reduction auscultation device for fault location of high-voltage cable |
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| CN112014683B true CN112014683B (en) | 2023-07-07 |
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Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4679233A (en) * | 1985-08-30 | 1987-07-07 | Motorola, Inc. | Microphone |
| JP4909731B2 (en) * | 2006-12-20 | 2012-04-04 | セイコーインスツル株式会社 | Press-fitting device |
| JP2011199065A (en) * | 2010-03-19 | 2011-10-06 | Seiko Instruments Inc | Vacuum package, method of manufacturing the same, piezoelectric vibrator, oscillator, electronic apparatus, and radio-controlled timepiece |
| US9470084B2 (en) * | 2010-08-12 | 2016-10-18 | Rosemount Inc. | Method and apparatus for measuring fluid process variable in a well |
| DE102012011066A1 (en) * | 2012-06-01 | 2013-12-05 | Hagenuk KMT Kabelmeßtechnik GmbH | Method for the targeted localization of a fault location and a device |
| CN104215587B (en) * | 2014-10-08 | 2016-08-17 | 山西大学 | Quartz enhanced photoacoustic spectroscopy acousimeter and assisted group assembling device thereof and method |
| CN206151480U (en) * | 2016-08-23 | 2017-05-10 | 十堰市太和医院 | Stethoscope for emergency department |
| CN108272467A (en) * | 2018-02-10 | 2018-07-13 | 丽水市知科科技有限公司 | A kind of graphene stethoscope |
| CN108490980B (en) * | 2018-04-12 | 2020-12-25 | 东莞职业技术学院 | Intelligent pickup system |
| CN209845232U (en) * | 2019-07-23 | 2019-12-24 | 济南三科智能化工程有限公司 | Sound pick-up device for reducing noise |
| CN211148528U (en) * | 2019-10-16 | 2020-07-31 | 醴陵中油燃气有限责任公司 | Equipment for detecting gas pipeline by using sound wave |
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