CN211698055U - Locking and fixing mechanism for ultrahigh frequency partial discharge intelligent sensor - Google Patents
Locking and fixing mechanism for ultrahigh frequency partial discharge intelligent sensor Download PDFInfo
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- CN211698055U CN211698055U CN201922401869.8U CN201922401869U CN211698055U CN 211698055 U CN211698055 U CN 211698055U CN 201922401869 U CN201922401869 U CN 201922401869U CN 211698055 U CN211698055 U CN 211698055U
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Abstract
The utility model discloses a superfrequency partial discharge intelligent sensor locking fixed establishment, mechanism include diplopore oval aluminium cover, wire rope, stainless steel slider, stroke adjusting bolt and sensor overcoat shell. The stroke of the stainless steel sliding block is adjustable and arranged in a sliding block stroke hole of the outer casing of the sensor, and one end of the steel wire rope penetrates through a rope penetrating hole of the outer casing and then is connected to the stainless steel sliding block; the stroke adjusting bolt is screwed to the inner thread section of the slide block stroke hole and used for adjusting and positioning the stainless steel slide block and pressing the steel wire rope. The fastening method comprises the steps of preparing a sensor, presetting a sliding block, threading and fastening, setting a pull ring, presetting the sensor and fastening the sensor, tightening a steel wire rope by screwing a stroke adjusting bolt, and accurately positioning the sensor. The mechanism is simple in structure, convenient to operate, good in stability, high in reliability, convenient to fix and dismantle, capable of effectively reducing labor intensity of workers and improving working efficiency.
Description
Technical Field
The utility model relates to a power equipment partial discharge detects technical field, especially involves a superfrequency partial discharge intelligent sensor locking fixed establishment.
Background
The partial discharge is a main factor for causing the insulation fault of the gas insulated metal-enclosed switchgear, and the activity intensity of the partial discharge can be used as the reference of the insulation degradation degree, so that in recent years, the ultrahigh frequency partial discharge intelligent sensor is widely applied to the detection and monitoring of the partial discharge of the gas insulated metal-enclosed switchgear and is an important component part for monitoring the state of a transformer substation; the existing ultrahigh frequency partial discharge sensor has three commonly adopted fixing modes: the first type is fixed on the gas insulated metal enclosed switchgear in a belt encircling manner; secondly, the gas insulated metal-enclosed switchgear is fixed on the gas insulated metal-enclosed switchgear by glue; thirdly, a handheld ultrahigh frequency partial discharge sensor is placed at an electric basin insulator of the gas insulated metal enclosed switchgear for detection; the above three methods have different problems: the belt is in an encircling type, and the monitoring work of the sensor cannot be maintained for a long time due to the fact that the belt is prone to aging, and the phenomenon of signal leakage caused by poor tightness is prone to occurring; the glue type can damage the surface appearance of the original power equipment and the appearance of the sensor, and has poor firmness and performance; the handheld detection is extremely inconvenient, interference signals can be brought to the handheld instability of detection personnel during detection, the detection result is influenced, and the handheld detection is only suitable for monitoring work in a short time.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a locking and fixing mechanism of an ultrahigh frequency partial discharge intelligent sensor, which can solve the relevant problems.
The design principle is as follows: in order to achieve the performances of sealing, reliable and firm installation, aging resistance and the like of the ultrahigh frequency partial discharge intelligent sensor and power equipment; the utility model adopts the form of the wire rope locking mechanism to effectively solve the problems of fixing the ultrahigh frequency partial discharge sensor by the elastic band or the glue through discussion and theoretical analysis and calculation; the steel wire rope penetrates through the sliding block and the through hole of the ultrahigh frequency sensor to be connected together, the tail end of the steel wire rope is fixed through the double-hole oval aluminum sleeve and sleeved on a nut of power equipment to be preliminarily fixed, and the sliding block and the steel wire rope are driven through locking of a bolt on the ultrahigh frequency sensor, so that locking of the ultrahigh frequency partial discharge intelligent sensor is achieved.
The technical scheme is as follows: the purpose of the utility model is realized by adopting the following technical scheme.
A locking and fixing mechanism of an ultrahigh frequency partial discharge intelligent sensor comprises a double-hole oval aluminum sleeve, a steel wire rope, a stainless steel sliding block, a stroke adjusting bolt and a sensor outer sleeve shell. Two opposite side walls of the sensor outer casing are provided with a slider stroke hole, and the inner wall of the upper part of the slider stroke hole is provided with an internal thread section corresponding to the stroke adjusting bolt; an outer casing rope threading hole is formed in the outer hole wall of the slide block stroke hole; the double-hole elliptical aluminum sleeve is fixedly sleeved on one end section of the steel wire rope to form a connecting ring for connecting and fixing the steel wire rope with a to-be-detected piece through a bolt; the stainless steel sliding block is arranged in a sliding block stroke hole of the outer casing of the sensor in an adjustable stroke mode, and the other end of the steel wire rope penetrates through a rope penetrating hole of the outer casing and then is connected to the stainless steel sliding block; the stroke adjusting bolt is screwed to the inner thread section of the slide block stroke hole and used for adjusting and positioning the stainless steel slide block and pressing the steel wire rope.
Preferably, the stainless steel sliding block is a cylindrical sliding block body, a sliding block rope threading hole is formed in the stainless steel sliding block body in a penetrating mode perpendicular to the axis of the cylindrical sliding block body, and a cross groove is formed in the bottom face of the stainless steel sliding block.
Preferably, the outer peripheral wall of the stainless steel sliding block is coated with two steel wire rope avoiding grooves axially formed in two ends of the sliding block rope penetrating hole from the top surface of the sliding block downwards.
Preferably, two opposite side walls of the sensor outer casing are respectively provided with a plurality of two slider stroke holes.
The utility model also provides a fastening method of high frequency partial discharge intelligent sensor, the method includes following step.
And preparing a sensor, screwing a stroke adjusting bolt into a slide block stroke hole of the outer casing of the sensor, and adjusting the bottom of the stroke adjusting bolt to be close to the upper part of the rope threading hole of the outer casing.
And pre-adjusting the sliding block, turning the outer casing of the sensor with the bottom surface upward, inserting the stainless steel sliding block into the sliding block stroke hole from the top surface of the sliding block, and adjusting the stroke adjusting bolt and the cross groove on the bottom surface of the stainless steel sliding block until the sliding block rope threading hole of the stainless steel sliding block is opposite to the rope threading hole of the outer casing.
And (4) rope threading and fastening, namely inserting the steel wire rope into the sliding block rope threading hole after penetrating the steel wire rope through the rope threading hole of the outer sleeve shell, and screwing the stroke adjusting bolt until the steel wire rope is fastened on the outer sleeve shell of the sensor.
And a pull ring is arranged, the length of the steel wire rope is determined according to the installation position of the sensor on the piece to be detected and the distance between fixed points, and a connecting ring is formed by pressing the tail section of the steel wire rope around a double-hole oval aluminum sleeve.
The sensor is prepositioned, the base of the outer casing of the sensor is installed on the installation position of the piece to be detected, the steel wire rope is pretensioned, and the connecting ring is fixed on the fixing point of the piece to be detected through the bolt.
And (4) fastening the sensor, tightening the steel wire rope and accurately positioning the sensor by screwing the stroke adjusting bolt.
Compared with the prior art, the beneficial effects of the utility model reside in that: the fixing device is simple in structure, convenient to operate, good in stability, high in reliability, convenient to fix and dismantle, capable of effectively reducing labor intensity of workers and improving working efficiency.
Drawings
FIG. 1 is a schematic cross-sectional view of the locking and fixing mechanism of the ultrahigh frequency partial discharge intelligent sensor of the present invention;
FIG. 2 is a schematic structural diagram of a stainless steel slider;
FIG. 3 is a schematic diagram of the connection between the UHF partial discharge intelligent sensor and the gas insulated metal-enclosed switchgear;
fig. 4 is a cross-sectional view at a-a in fig. 3.
In the figure:
1. a double-hole oval aluminum sleeve;
2. a wire rope; 21. a connecting ring;
3. a stainless steel slider; 31. a columnar slider body; 32. a rope threading hole of the sliding block; 33. a cross groove; 34. a steel wire rope avoidance groove;
4. a stroke adjusting bolt;
5. a sensor outer casing; 51. a slider travel hole; 52. a rope threading hole of the outer casing; 53. an internal thread section;
81. a gas insulated metal enclosed switchgear; 82. positioning the bolt; 83. a basin-type insulator.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the locking and fixing mechanism for the ultrahigh frequency partial discharge intelligent sensor comprises a double-hole oval aluminum sleeve 1, a steel wire rope 2, a stainless steel sliding block 3, a stroke adjusting bolt 4 and a sensor outer sleeve shell 5.
Connection relation: two opposite side walls of the sensor outer casing 5 are provided with a slider stroke hole 51, and the inner wall of the upper part of the slider stroke hole 51 is provided with an internal thread section 53 corresponding to the stroke adjusting bolt 4; and an outer casing threading hole 52 is formed in the outer hole wall of the slide block travel hole 51.
The double-hole elliptical aluminum sleeve 1 is fixedly sleeved on one end section of the steel wire rope 2 to form a connecting ring 21, and is used for being fixedly connected with a to-be-detected piece through a bolt. The diameter of the connection ring 21 is freely set according to the bolt used with the connection.
The stroke of the stainless steel sliding block 3 is adjustable and arranged in a sliding block stroke hole 51 of the sensor outer casing 5, and the other end of the steel wire rope 2 passes through a rope threading hole 52 of the outer casing and then is connected to the stainless steel sliding block 3.
The stroke adjusting bolt 4 is screwed to the internal thread section 53 of the slider stroke hole 51 and used for adjusting and positioning the stainless steel slider 3 and pressing the steel wire rope 2.
Further, the section diameter of the steel wire rope 2 is smaller than the inner diameter of the rope threading hole 52 of the outer casing, and the inner diameter of the rope threading hole 52 of the outer casing is smaller than the inner diameter of the slide block travel hole 51; the maximum outer diameter of the stainless steel slide block 3 is smaller than the inner diameter of the slide block stroke hole 51; and the clearance between the stainless steel slide block 3 and the slide block stroke hole 51 is smaller than the section diameter of the steel wire rope 2.
In one embodiment, the clearance between the stainless steel slide block 3 and the slide block stroke hole 51 is 0.5mm, and the stroke adjusting bolt 4 adopts an M6 bolt.
Referring to fig. 2(2a, 2b and 2c), the stainless steel slider 3 is a cylindrical slider body 31, a slider threading hole 32 is formed perpendicular to the axis of the cylindrical slider body 31 and penetrates through the cylindrical slider body, and a cross groove 33 is formed in the bottom surface of the stainless steel slider 3.
Furthermore, the outer peripheral wall of the stainless steel slide block 3 is covered with two steel wire rope avoiding grooves 34 from the top surface of the slide block to the bottom, and two ends of the slide block rope through hole 32 are axially provided with two steel wire rope avoiding grooves.
In a preferred embodiment, the slider threading hole 32 is formed in the middle of the outer peripheral surface of the stainless steel slider 3.
Further, the width of the steel wire rope avoiding groove 34 is larger than the diameter of the steel wire rope 2, and the depth of the steel wire rope avoiding groove 34 is larger than the radius of the steel wire rope 2 and smaller than the diameter of the steel wire rope 2.
In the preferred embodiment, two slider stroke holes 51 are formed in two opposite side walls of the sensor outer casing 5, that is, four slider stroke holes 51 are formed in total.
Referring to fig. 3 and 4, the fastening method for fixing the high-frequency partial discharge intelligent sensor by using the locking and fixing mechanism comprises the following steps.
The sensor is prepared, the stroke adjustment bolt 4 is screwed into the slider stroke hole 51 of the sensor outer casing 5, and the bottom of the stroke adjustment bolt 4 is adjusted to be close to above the outer casing threading hole 52.
And pre-adjusting the slide block, turning the outer casing shell 5 of the sensor, enabling the bottom surface to face upwards, inserting the stainless steel slide block 3 into the slide block stroke hole 51 from the top surface of the slide block, enabling the bottom surface of the stroke adjusting bolt 4 to be abutted against the top surface of the slide block of the stainless steel slide block 3, and adjusting the stroke adjusting bolt 4 and the cross groove 33 on the bottom surface of the stainless steel slide block 3 until the slide block rope threading hole 32 of the stainless steel slide block 3 is opposite to the rope threading hole 52 of the outer casing shell.
And (4) threading and fastening, namely, inserting the steel wire rope 2 into the sliding block threading hole 32 after passing through the outer casing threading hole 52, and screwing the stroke adjusting bolt 4 until the steel wire rope 2 is fastened on the sensor outer casing 5.
And a pull ring is arranged, the length of the steel wire rope is determined according to the installation position of the sensor on the piece to be detected and the distance between fixed points, and the tail section of the steel wire rope 2 is wound and pressed to form a connecting ring 21 through the double-hole elliptical aluminum sleeve 1.
The sensor is prepositioned, the base of the sensor outer casing 5 is installed on the installation position of the piece to be detected, the steel wire rope 2 is pretensioned, and the connecting ring 21 is fixed on the fixing point of the piece to be detected through a bolt.
The sensor is tightened, and by screwing the stroke adjusting bolt 4, the steel wire rope 2 is tightened and the sensor is accurately positioned.
In one embodiment, a very high frequency partial discharge intelligent sensor is used to connect with the gas insulated metal enclosed switchgear 81. According to the fastening method, the bottom surface of the sensor outer casing 5 is placed on the basin-shaped insulator 83, the connecting ring 21 at the tail end of the steel wire rope 2 is sleeved on the positioning bolt 82 at the installation position of the gas insulated metal closed switch device 81, the up-and-down direction guide is realized through the thread of the stroke adjusting bolt 4 of M6, the stainless steel slide block 3 is pushed to move downwards to tighten the steel wire rope 2 to realize the locking function, the clearance between the slide block stroke hole 51 and the stainless steel slide block 3 is 0.5mm, the stainless steel slide block 3 can not shake or misplace left and right in the slide block stroke hole 51, when the stainless steel slide block 3 and the steel wire rope 2 are pushed to be locked downwards, the steel wire rope 2 enters the slide block travel hole 51, because the clearance between the stainless steel sliding block 3 and the sliding block travel hole 51 is small, the steel wire rope 2 is interfered with the sliding block travel hole 51, and the phenomenon of locking can occur, and therefore, two steel wire rope avoiding grooves 34 are respectively formed in two sides of the stainless steel sliding block 3.
The locking mechanism has the characteristics that: the rigidity is locked, so that the ultrahigh frequency partial discharge intelligent sensor and the gas insulated metal enclosed switchgear are fully sealed, and the interference is avoided; all the fixing parts are metal parts, so that the fixing reliability is improved; the fixing and the dismounting are convenient, the labor intensity of workers is effectively reduced, and the working efficiency is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (7)
1. The utility model provides a superfrequency partial discharge intelligent sensor locking fixed establishment, locking fixed establishment includes diplopore oval aluminium cover (1), wire rope (2), stainless steel slider (3), stroke adjusting bolt (4) and sensor overcoat shell (5), its characterized in that: two opposite side walls of the sensor outer casing (5) are provided with slide block stroke holes (51), and the inner wall of the upper part of each slide block stroke hole (51) is provided with an inner thread section corresponding to the stroke adjusting bolt (4); an outer casing rope threading hole (52) is formed in the outer hole wall of the slide block travel hole (51);
the double-hole elliptical aluminum sleeve (1) is fixedly sleeved on one end section of the steel wire rope (2) to form a connecting ring (21) which is used for being fixedly connected with a to-be-detected piece through a bolt;
the stainless steel sliding block (3) is arranged in a sliding block stroke hole (51) of the sensor outer casing (5) in a stroke-adjustable manner, and the other end of the steel wire rope (2) penetrates through a rope penetrating hole (52) of the outer casing and then is connected to the stainless steel sliding block (3);
the stroke adjusting bolt (4) is in threaded connection with the inner thread section of the sliding block stroke hole (51) and is used for adjusting and positioning the stainless steel sliding block (3) and pressing the steel wire rope (2).
2. The locking fixture of claim 1, wherein:
the section diameter of the steel wire rope (2) is smaller than the inner diameter of the rope threading hole (52) of the outer casing, and the inner diameter of the rope threading hole (52) of the outer casing is smaller than the inner diameter of the slide block stroke hole (51); the maximum outer diameter of the stainless steel sliding block (3) is smaller than the inner diameter of the sliding block stroke hole (51); and the clearance between the stainless steel sliding block (3) and the sliding block stroke hole (51) is smaller than the section diameter of the steel wire rope (2).
3. The locking fixture of claim 1, wherein: the stainless steel sliding block (3) is a columnar sliding block body (31), a sliding block rope threading hole (32) is formed in the stainless steel sliding block body (3) in a penetrating mode and perpendicular to the axis of the columnar sliding block body (31), and a cross groove (33) is formed in the bottom face of the stainless steel sliding block (3).
4. The locking fixture of claim 3, wherein: the outer peripheral wall of the stainless steel sliding block (3) is coated downwards from the top surface of the sliding block, and two steel wire rope avoiding grooves (34) are axially formed in two ends of the sliding block rope threading hole (32).
5. The locking fixture of claim 3 or 4, wherein: the sliding block rope threading hole (32) is formed in the middle of the outer peripheral surface of the stainless steel sliding block (3).
6. The locking fixture of claim 4, wherein: the groove width of the steel wire rope avoiding groove (34) is larger than the diameter of the steel wire rope (2), and the groove depth of the steel wire rope avoiding groove (34) is larger than the radius of the steel wire rope (2) and smaller than the diameter of the steel wire rope (2).
7. The locking fixture of claim 4, wherein: two slide block travel holes (51) are respectively formed on two opposite side walls of the sensor outer casing (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922401869.8U CN211698055U (en) | 2019-12-27 | 2019-12-27 | Locking and fixing mechanism for ultrahigh frequency partial discharge intelligent sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922401869.8U CN211698055U (en) | 2019-12-27 | 2019-12-27 | Locking and fixing mechanism for ultrahigh frequency partial discharge intelligent sensor |
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| Publication Number | Publication Date |
|---|---|
| CN211698055U true CN211698055U (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922401869.8U Active CN211698055U (en) | 2019-12-27 | 2019-12-27 | Locking and fixing mechanism for ultrahigh frequency partial discharge intelligent sensor |
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| Country | Link |
|---|---|
| CN (1) | CN211698055U (en) |
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2019
- 2019-12-27 CN CN201922401869.8U patent/CN211698055U/en active Active
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