Ultrasonic partial discharge detection auxiliary operation device for high-altitude operations

Abstract

The utility model discloses an auxiliary operation device for high-altitude operation of ultrasonic partial discharge detection, comprising an ultrasonic probe, a probe mounting seat and an operating rod; the probe mounting seat is mounted on the top of the operating rod through a pan head; the tail of the ultrasonic probe is mounted in the probe mounting seat, and the detection end of the ultrasonic probe extends out of the probe mounting seat toward an end away from the operating rod; a buffer bracket is respectively provided on both sides of the end of the probe mounting seat away from the operating rod, and an elastic contact is provided at the end of the buffer bracket; the ultrasonic probe is placed between two buffer brackets, and when the elastic contact is in a compressed state, the sum of the lengths of the buffer bracket and the elastic contact is less than the length of the ultrasonic probe extending out of the probe mounting seat; when the elastic contact is in an extended state, the sum of the lengths of the buffer bracket and the elastic contact is greater than the length of the ultrasonic probe extending out of the probe mounting seat.

Description

Technical Field

[0001] The utility model relates to a field, in particular to an auxiliary operation device for high-altitude operation of ultrasonic partial discharge detection. Background Art

[0002] Ultrasonic waves are mechanical waves with a higher vibration frequency than sound waves. They have the characteristics of high frequency, short wavelength, small diffraction, and especially good directivity, and can be directional propagation as rays. Ultrasonic waves have great penetrating power for liquids and solids, especially in solids that are opaque to sunlight, where they can penetrate to a depth of tens of meters. When ultrasonic waves encounter impurities or interfaces, they will produce significant reflections to form echoes, and when they encounter moving objects, they can produce the Doppler effect. Therefore, ultrasonic testing is widely used in industry, national defense, biomedicine, and other fields.

[0003] Ultrasonic waves are widely used in the power industry for live detection. The unbroken discharge channel in the insulation layer of the equipment is referred to as partial discharge. The partial discharge will gradually escalate under the action of the power plant and eventually turn into a breakdown fault ultrasonic wave. The partial discharge test is mainly used to detect the partial discharge inside the equipment system to ensure that the equipment is in a healthy state. Its purpose is to measure and accurately locate the partial discharge of the equipment by detecting the high-frequency pulse signal of the inductive element and the equipment under test, combined with signal compensation technology. By extracting the time difference of the ultrasonic signal reaching different sensors and using its propagation rate, the two-dimensional or three-dimensional positioning of the discharge source can be achieved. By comparing the strength of two or more ultrasonic detection signals, the amplitude positioning of the discharge source can be achieved.

[0004] In field work practice, there are usually many parts that are located at high altitudes, and it is impossible to directly stick the ultrasonic probe on the ground or on the equipment pan / tilt. In most cases, workers will use ladders or stools for assistance. Every time one or two points are tested, the ladder or stool needs to be moved up and down frequently. The time spent on moving up and down during this test process far exceeds the actual test process, and it is also a huge drain on the physical strength of the operators. There is also a safety risk of the testers falling from a height.

[0005] In order to solve the problem of frequent ups and downs when using ultrasonic partial discharge to detect high-altitude equipment, the utility model patent with patent number 201920825798.1 discloses a GIS equipment charged ultrasonic partial discharge detection device, and specifically discloses the use of slender support rods to bring the ultrasonic detector close to the equipment for detection, replacing manual climbing detection, greatly improving the work efficiency of this measurement. However, the direction of the ultrasonic detector disclosed in the patent cannot be adjusted as needed, and cannot be applied to GIS equipment with different angles on the surface of the site; and the end of the ultrasonic detector in the patent is directly exposed to the outside. Since it is operated at a high altitude through an operating rod, the force control is not so precise. When in use, the ultrasonic detector is easy to come into hard contact with the GIS equipment and damage the ultrasonic detector. Utility Model Content

[0006] The utility model aims to provide an auxiliary operating device for high-altitude operation of ultrasonic partial discharge detection, so as to solve the problem that the current auxiliary operating device for high-altitude operation of discharge detection cannot protect the ultrasonic detector and cannot adjust the detection angle.

[0007] In order to solve the above technical problems, the present invention provides an auxiliary operation device for ultrasonic partial discharge detection at high altitude, comprising an ultrasonic probe, a probe mounting seat and an operating rod; the probe mounting seat is mounted on the top of the operating rod through a pan / tilt platform; the tail of the ultrasonic probe is mounted in the probe mounting seat, and the detection end of the ultrasonic probe extends out of the probe mounting seat toward the end away from the operating rod;

[0008] A buffer bracket is respectively provided on both sides of the end of the probe mounting seat away from the operating rod, and an elastic contact is provided at the end of the buffer bracket; the ultrasonic probe is placed between the two buffer brackets, and when the elastic contact is in a compressed state, the sum of the lengths of the buffer bracket and the elastic contact is less than the length of the elastic contact extending out of the probe mounting seat; when the elastic contact is in an extended state, the sum of the lengths of the buffer bracket and the elastic contact is greater than the length of the elastic contact extending out of the probe mounting seat.

[0009] When the elastic contact is in a compressed state, the sum of the lengths of the buffer bracket and the elastic contact is equal to the length of the elastic contact extending out of the probe mounting seat.

[0010] Furthermore, the buffer bracket is an L-shaped bracket, the horizontal portion of the L-shaped bracket is fixedly connected to the side of the probe mounting base, the vertical portion of the L-shaped bracket is arranged toward the side away from the operating rod, and the elastic contact is installed at the end of the vertical portion of the L-shaped bracket.

[0011] Furthermore, a first mounting hole is provided at one end of the probe mounting seat away from the operating rod, a first wire passing groove is provided on a side wall of the first mounting hole, and a probe clamping seat for clamping the ultrasonic probe is provided in the first mounting hole.

[0012] Furthermore, a second mounting hole is provided at one end of the probe clamping seat away from the operating rod, and a second wire passing groove matching the first wire passing groove is provided on the side wall of the second mounting hole. A second screw and two locking plates respectively arranged on both sides of the second wire passing groove are provided on the outer wall of the probe clamping seat. The two locking plates are arranged on one side of the opening of the probe clamping seat, and the two locking plates are respectively provided with a through hole symmetrical to each other. After the second screw passes through the two through holes, the distance between the two locking plates is adjusted by a nut, so that the side wall of the probe clamping seat is tightened to clamp the ultrasonic probe.

[0013] Furthermore, an elastic gasket is installed on the inner wall of the second mounting hole.

[0014] Furthermore, a third threaded hole penetrating the side wall of the probe mounting seat is provided on the side wall opposite to the first wire groove, and a fourth threaded hole is provided on the side wall of the probe clamping seat, and the fourth threaded hole is a blind hole. The probe clamping seat is fixed in the probe mounting seat by bolts respectively matching the third threaded hole and the fourth threaded hole.

[0015] Furthermore, an inwardly recessed card slot is provided on both sides of the bottom of the probe mounting base, a card seat matching the card slot is provided on the top of the pan / tilt head, and a first card block and a second card block matching the card slot are provided on both sides of the card seat, and the distance between the first card block and the second card block is adjustable.

[0016] Furthermore, the base includes a fixed part, a movable part and a first screw, the fixed part includes a connecting base fixedly installed on the top of the gimbal, and the first clamping block is fixed to the top of one end of the connecting base; the movable part includes a connecting arm, and the second clamping block is fixed to the top of the connecting arm; the connecting arm is provided with a first threaded hole that passes through it horizontally, and the end of the connecting base facing the connecting arm is provided with a second threaded hole that matches the first threaded hole, and the connecting base is connected to the connecting arm by a first screw.

[0017] Furthermore, one end of the connecting seat connected to the connecting arm is provided with a groove recessed toward a side away from the connecting arm, and one end of the connecting arm connected to the connecting seat is provided with a protrusion protruding toward a side away from the connecting seat; the protrusion extends into the groove.

[0018] Furthermore, the operating rod is a telescopic rod.

[0019] The beneficial effects of the utility model are as follows: by using the ultrasonic partial discharge detection high-altitude operation auxiliary operation device, the frequent use of stairs or benches can be omitted, greatly improving the work efficiency. By setting the pan / tilt, the detection angle of the ultrasonic probe can be easily adjusted to be suitable for GIS equipment with different surface angles on site. By setting the buffer bracket, the ultrasonic probe can be protected to prevent the ultrasonic probe from hard contact with the equipment under test. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The same reference numerals are used in these drawings to represent the same or similar parts. The exemplary embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is a front view of an embodiment of the utility model.

[0022] Figure 2 It is a rear view of an embodiment of the utility model.

[0023] Figure 3 It is a top view of an embodiment of the utility model.

[0024] Figure 4 The figure is a schematic structural diagram of a probe mounting base according to an embodiment of the utility model.

[0025] Among them: 1. operating lever; 2. connecting head; 3. pan / tilt; 4. socket; 41. connecting socket; 411. first clamping block; 412. groove; 42. connecting arm; 421. second clamping block; 422. protrusion; 43. first screw; 5. probe mounting seat; 51. first mounting hole; 52. third threaded hole; 53. first wire groove; 54. L-shaped bracket; 55. elastic contact; 6. probe clamping seat; 61. second mounting hole; 62. second wire groove; 63. locking plate; 64. second screw; 65. nut; 66. elastic pad; 7. connecting plate; 8. processor mounting box. DETAILED DESCRIPTION

[0026] like Figure 1The auxiliary operation device for high-altitude operation of ultrasonic partial discharge detection shown comprises an ultrasonic probe, a probe mounting seat 5 and an operating rod 1; the probe mounting seat 5 is mounted on the top of the operating rod 1 through a pan-tilt 3; the tail of the ultrasonic probe is mounted in the probe mounting seat 5, and the detection end of the ultrasonic probe extends out of the probe mounting seat 5 to the end away from the operating rod 1; the auxiliary operation device for high-altitude operation of ultrasonic partial discharge detection can save the frequent use of stairs or benches, greatly improving the work efficiency. By setting the pan-tilt 3, the detection angle of the ultrasonic probe can be easily adjusted to be suitable for the equipment to be inspected on the surface of different angles on site; the pan-tilt 3 can adopt the existing pan-tilt 3 structure that can be limited.

[0027] A buffer bracket is provided on both sides of the end of the probe mounting seat 5 away from the operating rod 1, and an elastic contact 55 is provided at the end of the buffer bracket; the ultrasonic probe is placed between the two buffer brackets, and when the elastic contact 55 is in a compressed state, the sum of the lengths of the buffer bracket and the elastic contact 55 is slightly less than the length of the elastic contact 55 extending out of the probe mounting seat 5; when the elastic contact 55 is in an extended state, the sum of the lengths of the buffer bracket and the elastic contact 55 is greater than the length of the elastic contact 55 extending out of the probe mounting seat 5. The ultrasonic probe can be protected by providing a buffer bracket, and when the device is used to make the ultrasonic probe contact with the device to be tested, a certain buffering effect can be provided to prevent the ultrasonic probe from hard contact with the device to be tested. During the detection process, appropriate pressure is applied to the probe mounting seat 5 through the operating rod 1 to make the ultrasonic probe installed on the probe mounting seat 5 contact with the device to be tested.

[0028] According to one embodiment of the present application, the buffer bracket is an L-shaped bracket 54, the horizontal portion of the L-shaped bracket 54 is fixedly connected to the side of the probe mounting base 5, the vertical portion of the L-shaped bracket 54 is arranged toward the side away from the operating rod 1, and the elastic contact 55 is installed at the end of the vertical portion of the L-shaped bracket 54 away from the operating rod 1.

[0029] According to one embodiment of the present application, a first mounting hole 51 is provided at one end of the probe mounting seat 5 away from the operating rod 1, a first wire groove 53 is provided on the side wall of the first mounting hole 51, and a probe clamping seat 6 for clamping the ultrasonic probe is provided in the first mounting hole 51. The ultrasonic probe is clamped in the first mounting hole 51 of the probe mounting seat 5 by the probe clamping seat 6, and the wire connecting the ultrasonic probe passes through the first wire groove 53 and passes through the outside of the probe mounting seat 5 to connect with the signal processor. The ultrasonic probe and the signal processor in the present application both adopt the technology, and the signal processor is installed in the processor mounting box 8, and the processor mounting box 8 is connected to the connector 2 at the top of the operating rod through the connecting plate 7.

[0030] According to an embodiment of the present application, the probe clamping seat 6 is provided with a second mounting hole 61 at one end away from the operating rod 1, and a second wire groove 62 matching the first wire groove 53 is provided on the side wall of the second mounting hole 61, and a second screw 64 and two locking plates 63 respectively arranged on both sides of the second wire groove 62 are provided on the outer wall of the probe clamping seat 6, and the two locking plates 63 are arranged on one side of the opening of the probe clamping seat 6, and the two locking plates 63 are respectively provided with a mutually symmetrical through hole, and the second screw 64 passes through the two through holes and then adjusts the distance between the two locking plates 63 through the nut 65, so that the side wall of the probe clamping seat 6 is tightened to clamp the ultrasonic probe. During installation, the tail of the ultrasonic probe is installed in the second mounting hole 61 of the probe clamping seat 6, and then the nut 65 is tightened to make the two locking plates 63 close to each other, so that the side wall of the probe clamping seat 6 is tightened to clamp the ultrasonic probe.

[0031] According to an embodiment of the present application, an elastic pad 66 is installed on the inner wall of the second mounting hole 61. The elastic pad 66 can not only increase the friction force, but also protect the ultrasonic probe when clamping the ultrasonic probe.

[0032] According to one embodiment of the present application, a third threaded hole 52 penetrating the side wall of the probe mounting seat 5 opposite to the first wire groove 53 is provided, and a fourth threaded hole is provided on the side wall of the probe clamping seat 6, and the fourth threaded hole is a blind hole. The probe clamping seat 6 is fixed in the probe mounting seat 5 by bolts respectively matching the third threaded hole 52 and the fourth threaded hole. Fixing the probe clamping seat 6 in the probe mounting seat 5 by bolts can prevent the probe clamping seat 6 from falling off.

[0033] According to an embodiment of the present application, a card slot recessed inward is provided on both sides of the bottom of the probe mounting seat 5, a card seat 4 matching the card slot is provided on the top of the pan / tilt 3, a first card block 411 and a second card block 421 matching the card slot are provided on both sides of the card seat 4, and the distance between the first card block 411 and the second card block 421 is adjustable. During installation, the probe mounting seat 5 is placed between the first card block 411 and the second card block 421, and the card slot of the probe installation is aligned with the first card block 411 and the second card block 421, and then the first card block 411 and the second card block 421 are brought close to clamp the probe mounting seat 5.

[0034] According to an embodiment of the present application, the base 4 includes a fixed portion, a movable portion and a first screw 43. The fixed portion includes a connecting base fixedly mounted on the top of the pan / tilt head 3, and the first clamping block 411 is fixed to the top of one end of the connecting base; the movable portion includes a connecting arm 42, and the second clamping block 421 is fixed to the top of the connecting arm 42; the connecting arm 42 is provided with a first threaded hole that runs horizontally through it, and the end of the connecting base facing the connecting arm 42 is provided with a second threaded hole that matches the first threaded hole, and the connecting base is connected to the connecting arm 42 through the first screw 43. The distance between the connecting base and the connecting arm 42 is adjusted by the first screw 43.

[0035] According to one embodiment of the present application, one end of the connecting seat connected to the connecting arm 42 is provided with a groove 412 that is recessed toward a side away from the connecting arm 42, and one end of the connecting arm 42 connected to the connecting seat is provided with a protrusion 422 that protrudes toward a side away from the connecting seat; the protrusion 422 extends into the groove 412.

[0036] According to an embodiment of the present application, the operating rod 1 is a telescopic rod. A multi-section detachable operating rod 1 can be used to be applicable to ultrasonic partial discharge test sites at different heights.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An ultrasonic partial discharge detection high-altitude operation auxiliary operation device, characterized in that: It comprises an ultrasonic probe, a probe mounting seat and an operating rod; the probe mounting seat is mounted on the top of the operating rod through a pan-tilt platform; the tail of the ultrasonic probe is mounted in the probe mounting seat, and the detection end of the ultrasonic probe extends out of the probe mounting seat toward the end away from the operating rod; A buffer bracket is respectively provided on both sides of the end of the probe mounting seat away from the operating rod, and an elastic contact is provided at the end of the buffer bracket; the ultrasonic probe is placed between the two buffer brackets, and when the elastic contact is in a compressed state, the sum of the lengths of the buffer bracket and the elastic contact is less than the length of the ultrasonic probe extending out of the probe mounting seat; when the elastic contact is in an extended state, the sum of the lengths of the buffer bracket and the elastic contact is greater than the length of the ultrasonic probe extending out of the probe mounting seat.

2. The ultrasonic partial discharge detection high-altitude operation auxiliary operation device according to claim 1 is characterized in that: The buffer bracket is an L-shaped bracket, the horizontal portion of which is fixedly connected to the side of the probe mounting seat, the vertical portion of which is arranged toward a side away from the operating rod, and the elastic contact is installed at the end of the vertical portion of the L-shaped bracket.

3. The ultrasonic partial discharge detection high-altitude operation auxiliary operation device according to claim 2 is characterized in that: A first mounting hole is arranged at one end of the probe mounting seat away from the operating rod, a first wire passing groove is arranged on the side wall of the first mounting hole, and a probe clamping seat for clamping the ultrasonic probe is arranged in the first mounting hole.

4. The ultrasonic partial discharge detection high-altitude operation auxiliary operation device according to claim 3 is characterized in that: A second mounting hole is provided at one end of the probe clamping seat away from the operating rod, and a second wire passing groove matching the first wire passing groove is provided on the side wall of the second mounting hole. A second screw and two locking plates respectively arranged on both sides of the second wire passing groove are provided on the outer wall of the probe clamping seat. The two locking plates are arranged on one side of the opening of the probe clamping seat, and the two locking plates are respectively provided with a through hole symmetrical to each other. After the second screw passes through the two through holes, the distance between the two locking plates is adjusted by a nut, so that the side wall of the probe clamping seat is tightened to clamp the ultrasonic probe.

5. The ultrasonic partial discharge detection high-altitude operation auxiliary operation device according to claim 4 is characterized in that: An elastic pad is installed on the inner wall of the second mounting hole.

6. The ultrasonic partial discharge detection high-altitude operation auxiliary operation device according to claim 5 is characterized in that: A third threaded hole penetrating through the side wall of the probe mounting seat is provided on the side wall opposite to the first wire groove, and a fourth threaded hole corresponding to the third threaded hole is provided on the side wall of the probe clamping seat, and the fourth threaded hole is a blind hole. The probe clamping seat is fixed in the probe mounting seat by bolts respectively matching the third threaded hole and the fourth threaded hole.

7. The ultrasonic partial discharge detection high-altitude operation auxiliary operation device according to claim 6 is characterized in that: An inwardly recessed card slot is respectively provided on both sides of the bottom of the probe mounting base, a card seat matching the card slot is provided on the top of the pan / tilt head, a first card block and a second card block matching the card slot are respectively provided on both sides of the card seat, and the distance between the first card block and the second card block is adjustable.

8. The ultrasonic partial discharge detection high-altitude operation auxiliary operation device according to claim 7 is characterized in that: The base includes a fixed part, a movable part and a first screw, the fixed part includes a connecting base fixedly installed on the top of the pan-tilt head, and the first clamping block is fixed to the top of one end of the connecting base; the movable part includes a connecting arm, and the second clamping block is fixed to the top of the connecting arm; the connecting arm is provided with a first threaded hole that passes through it horizontally, and the end of the connecting base facing the connecting arm is provided with a second threaded hole that matches the first threaded hole, and the connecting base is connected to the connecting arm by a first screw.

9. The ultrasonic partial discharge detection high-altitude operation auxiliary operation device according to claim 8 is characterized in that: One end of the connection seat connected to the connection arm is provided with a groove recessed toward a side away from the connection arm, and one end of the connection arm connected to the connection seat is provided with a protrusion protruding toward a side away from the connection seat; the protrusion extends into the groove.

10. The ultrasonic partial discharge detection high-altitude operation auxiliary operation device according to claim 1, characterized in that: The operating rod is a telescopic rod.

Images