CN115932510A

CN115932510A - Cable alternating current withstand voltage test device

Info

Publication number: CN115932510A
Application number: CN202211718106.6A
Authority: CN
Inventors: 袁国胜; 肖楠; 高丽
Original assignee: Guoneng Technology Zhengzhou Group Co ltd
Current assignee: Guoneng Technology Zhengzhou Group Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-04-07
Anticipated expiration: 2042-12-30
Also published as: CN115932510B

Abstract

The application provides a cable alternating-current voltage withstand test device, which can synchronously clamp and fix all test items in a joint through the matching of a fluted disc and a pinion, so that the test items are prevented from moving or shaking in the test process to influence the test progress and the test result, and the simple test process and the reliable test result are ensured; in addition, the test items can be fixed through the connecting rod and the plug auxiliary connector in the clamping process, so that the test items are guaranteed to be fixed reliably, in addition, the test can be performed between any test items through the communication between the plug and the connector, the test difficulty is further reduced, and the test operation is simple; moreover, the adjusting ring is arranged in the sliding sleeve, and the stress direction between the connecting rod and the sliding sleeve can be changed through the adjusting ring, so that the connecting rod can be clamped by the sliding sleeve and the high-pressure rod in an auxiliary manner, the clamping of the test item can be released in an auxiliary manner, and the convenience of mounting, fixing and dismounting the test panel is improved.

Description

Cable alternating current withstand voltage test device

Technical Field

The invention relates to the field of alternating current withstand voltage tests, in particular to a cable alternating current withstand voltage test device.

Background

The ac withstand voltage test is the most effective and direct method to identify the dielectric strength of electrical equipment. When the power equipment runs, the insulation can gradually deteriorate, wherein the deterioration comprises integral deterioration and partial deterioration to form defects; in order to check the reliability of the insulation of the power equipment, an alternating-current voltage withstand test needs to be carried out, and because the voltage of the alternating-current voltage withstand test is generally higher than the operating voltage, the equipment has a large safety margin after the insulation passes the test, so the alternating-current voltage withstand test is also an important means for ensuring the safe operation of the power equipment.

At present, in an alternating current voltage withstand test of a cable, after insulating layers at the end parts of all insulated wire cores are removed, insulation between adjacent wire cores, insulation between conductors of the wire cores and a metal shielding layer, insulation between the conductors of the wire cores and the metal armoring layer and insulation between the metal shielding layer and the metal armoring layer are tested in sequence; due to the reasons that the wire core, the insulating layer and the armor layer are inconvenient to fix, various test items and the like, the conditions of test omission or repeated tests are easy to occur in the test process, so that the test efficiency is low, and the test result is inaccurate; for example, in the patent document with application number 202122161877, a fixing device for ac withstand voltage test of cable is disclosed, which is used to solve the problems occurring in the control cable test, but it still has the problems of complicated operation steps and troublesome clamping method, and the above problems still exist in the ac withstand voltage test of the common cable.

Disclosure of Invention

The invention aims to solve at least one of the problems in the prior art, and therefore the invention provides a cable alternating current voltage withstand test device which is convenient for clamping each test item and clearly performing the test.

In order to solve the problems, the invention provides a cable alternating current withstand voltage test device which comprises a test disc and connectors, wherein a plurality of through holes are uniformly distributed in the circumferential direction of the test disc, and the connectors are slidably arranged in the through holes; the connector is cylindrical, an opening is formed in the lower end of the connector, elastic sheets are uniformly distributed on the upper end of the connector in the circumferential direction, and a fixing sheet and a conducting sheet are arranged on the elastic sheets in the direction towards the inside of the connector; a pinion is rotatably arranged in the through hole, the pinion is sleeved outside the joint, internal threads are arranged inside the pinion, external threads are arranged on the outer surface of the joint, and the pinion is in threaded fit with the joint; a fluted disc is rotatably arranged at the center of the test disc and is meshed with the pinion; the upper surface of the fluted disc is fixedly provided with a high-pressure rod, a sliding sleeve is slidably sleeved outside the high-pressure rod, a plurality of connecting rods are rotatably arranged on the sliding sleeve, the end parts of the connecting rods, far away from the sliding sleeve, are provided with plugs, and the plugs can be sleeved on the joints; the high-voltage rod is electrically connected with the high-voltage test port, a lead is arranged inside the connecting rod, one end of the lead is communicated with the high-voltage rod, and the other end of the lead is communicated to the plug.

Furthermore, the conducting strip on the spring plate at the upper end of the joint is positioned at the top end of the spring plate, and an included angle with the value range of 150-160 degrees is arranged between the conducting strip and the fixing plate; the conducting strip and the fixing sheet face towards the inside of the joint.

Further, connect the surface vertical be provided with the spacing groove just the spacing groove is in it is equipped with a plurality ofly to connect surface circumference equipartition, the test dish correspond in the through-hole and be provided with the stopper, the stopper stretches into the spacing inslot.

Furthermore, the sliding sleeve is sleeved on the high-pressure rod, a plurality of rotating shafts are rotatably arranged on the side wall of the sliding sleeve close to the high-pressure rod, the rotating shafts are uniformly distributed along the side wall of the sliding sleeve, every two adjacent rotating shafts are set into a group, each group of rotating shafts is provided with an adjusting ring, the rotating shafts are provided with through grooves, and two ends of the adjusting rings respectively penetrate through the through grooves on the two rotating shafts in one group; a plurality of vertical grooves are uniformly distributed on the high pressure rod, and the end part of the adjusting ring penetrates through the through groove and then extends into the vertical grooves; the sliding sleeve and the high-pressure rod can be fixed relatively in the horizontal direction.

Furthermore, an annular groove is formed in the sliding sleeve, a sliding block is arranged at the end part, close to the sliding sleeve, of the connecting rod, and the sliding block is slidably arranged in the annular groove; the side of the slider towards the high-pressure rod is also provided with an elastic ring which is an elastic semicircular metal ring and can be abutted against the adjusting ring.

Furthermore, the upper surface of sliding sleeve is provided with the ring, seted up the fixed orifices on the ring, a plurality of perpendicular grooves have been seted up to the equipartition on the high-pressure bar.

Further, the diameter of the fixing hole is the same as the width of the vertical groove on the high-pressure rod.

Furthermore, a plurality of fixing holes are uniformly distributed on the sliding sleeve along the circumferential direction of the circular ring.

Furthermore, the end part of the adjusting ring extending into the vertical groove is provided with an anti-falling block.

Further, a metal electrode is arranged inside the plug, a wire is arranged inside the connecting rod, one end of the wire is connected to the elastic ring on the sliding block, the other end of the wire is connected to the metal electrode, an extrusion sheet is arranged on the metal electrode, the extrusion sheet is arranged in an inclined mode, and the size of the included angle between the extrusion sheet and the vertical direction is equal to the size of the included angle between the conductive sheet and the vertical direction.

This cable alternating current withstand voltage test device has following beneficial effect:

1) This cable alternating current withstand voltage test device can fix all synchronous centre gripping of test item in the joint through the cooperation of fluted disc and pinion, avoids the test item to take place to remove or rock in the process of the test, influences experimental progress and test result, guarantees that the process of the test is simple, test result is reliable.

2) This cable alternating current withstand voltage test device can fix the test item through connecting rod and plug auxiliary connector in the centre gripping process, guarantees that the test item is fixed reliable, can also test between arbitrary test item through the intercommunication of plug and joint in addition, further reduces the experimental degree of difficulty, makes experimental easy operation.

3) This cable exchanges withstand voltage test device is provided with the adjustable ring in the sliding sleeve, and the atress direction between accessible adjustable ring change connecting rod and the sliding sleeve to when making the connecting rod can assist the test item chucking through sliding sleeve and high-pressure bar, also can assist and remove the chucking with the test item, improve the convenience that test panel installation is fixed and dismantle.

Drawings

FIG. 1 is a schematic view of an embodiment of the present invention showing an overall three-dimensional structure in a separated state;

FIG. 2 is a schematic view of the overall clamping state of the three-dimensional structure according to the embodiment of the present invention;

FIG. 3 is a schematic perspective view of a test tray and a joint according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view of a test tray according to an embodiment of the present invention;

FIG. 5 is a schematic perspective view of a joint according to an embodiment of the present invention;

FIG. 6 is a perspective view of a plug assembly according to an embodiment of the present invention;

FIG. 7 is an elevational, partial cross-sectional view of a plug assembly in accordance with an embodiment of the present invention;

FIG. 8 isbase:Sub>A cross-sectional view taken at A-A of FIG. 7 in accordance with an embodiment of the present invention;

FIG. 9 is an enlarged view of a portion of FIG. 8 at B in accordance with an embodiment of the present invention;

FIG. 10 isbase:Sub>A cross-sectional view of state two of FIG. 7 at A-A in accordance with an embodiment of the present invention;

fig. 11 is a partial enlarged view at C in fig. 10 according to the embodiment of the present invention.

In the figure: 1. a test tray; 11. a through hole; 12. a pinion gear; 13. a fluted disc; 14. a limiting block; 2. a joint; 21. a spring plate; 22. a fixing sheet; 23. a conductive sheet; 24. a limiting groove; 3. a high pressure lever; 31. a vertical slot; 4. a sliding sleeve; 41. a circular ring; 42. a fixing hole; 43. a rotating shaft; 44. an adjusting ring; 45. an annular groove; 46. an anti-drop block; 5. a connecting rod; 51. a plug; 52. a wire; 53. a slider; 54. an elastic ring; 55. a metal electrode; 56. and (5) extruding the sheet.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the embodiment of the ac voltage withstand test device for cables shown in fig. 1 to 11, the ac voltage withstand test device for cables of the present invention includes a test disc 1 and a connector 2, wherein a plurality of through holes 11 are uniformly distributed in the circumferential direction of the test disc 1, and the connector 2 is installed in the through holes 11 in a vertically slidable manner; the connector 2 is cylindrical, the lower end of the connector 2 is provided with an opening, the upper end of the connector 2 is uniformly provided with elastic sheets 21 in the circumferential direction, and the elastic sheets 21 are provided with fixing sheets 22 and conducting sheets 23 in the direction towards the inside of the connector 2; a pinion 12 is rotatably arranged in the through hole 11, the pinion 12 is sleeved outside the joint 2, internal threads are arranged inside the pinion 12, external threads are arranged on the outer surface of the joint 2, and the pinion 12 is in threaded fit with the joint 2; a fluted disc 13 is rotatably arranged at the center of the test disc, and the fluted disc 13 is meshed with the pinion 12; the upper surface of the fluted disc 13 is fixedly provided with a high-pressure rod 3, the high-pressure rod 3 is sleeved with a sliding sleeve 4 in a sliding manner, the sliding sleeve 4 is rotatably provided with a plurality of connecting rods 5, the end part of each connecting rod 5 far away from the sliding sleeve is provided with a plug 51, and the plug 51 can be sleeved on the joint 2; the high-voltage rod 3 is electrically connected with the high-voltage test port, a lead 52 is arranged inside the connecting rod 5, one end of the lead 52 is communicated with the high-voltage rod 3, and the other end of the lead 52 is communicated with the plug 51.

Specifically, when the alternating-current voltage withstand test device for the cable is used, after an insulating layer at the end part of the cable to be tested is stripped, a cable core is directly inserted into a connector 2 from an opening below the connector, a shielding layer and an armor layer are respectively connected with a conductive cable core and then are also inserted into the connector 2, after the insertion is finished, a high-pressure rod 3 is rotated, a fluted disc 13 is driven by the high-pressure rod 3 to rotate, the fluted disc 13 drives a pinion 12 to rotate, the pinion 12 can be matched with threads on the outer surface of the connector 2 when rotating, the connector 2 is driven to move downwards, so that an elastic sheet 21 is limited by the pinion 12 and the inner wall of a through hole 11, the elastic sheet 21 is extruded towards the direction inside the connector 2, the cable core inside the connector 2 is extruded and fixed through a fixing sheet 22, and meanwhile, a conductive sheet 23 on the elastic sheet 21 is ensured to be abutted against the cable core; after the sinle silk is fixed to finish, remove sliding sleeve 4, will need to put through highly compressed joint 2 and the cooperation of pegging graft rather than the plug 51 of top, peg graft and finish the back and can test, whole process convenient and fast, easy operation to fix the back with the sinle silk through the test panel, the testing process is clear, is difficult for appearing lou examining, the repeated experimental condition, has also improved test efficiency, has guaranteed the accuracy of test result.

In an embodiment of the present application, preferably, as shown in fig. 5, the conductive sheet 23 of the elastic sheet 21 at the upper end of the connector is located at the top end of the elastic sheet 21, an included angle with a value range of 150 ° to 160 ° is provided between the conductive sheet 23 and the fixed sheet 22, and both the conductive sheet 23 and the fixed sheet 22 face the inside of the connector 2; guarantee when shell fragment 21 is to connecting 2 inside contractions at the time, stationary blade 22 and conducting strip 23 homoenergetic are contradicted on connecting 2 inside sinle silk, and stationary blade 22 guarantees that the sinle silk is fixed firm reliable, and conducting strip 23 guarantees the electric connection of experimental high pressure port and sinle silk.

In an embodiment of the application, preferably, as shown in fig. 5, a plurality of limiting grooves 24 are vertically arranged on the outer surface of the joint 2, the limiting grooves 24 are uniformly distributed on the outer surface of the joint 2 in the circumferential direction, limiting blocks 14 are correspondingly arranged in the through holes 11 of the test disc 1, and the limiting blocks 14 extend into the limiting grooves 24; when the connector 2 is driven by the pinion 12 through thread matching, the through hole 11 can only be moved in the vertical direction, the elastic sheet 21 is extruded towards the inside of the connector 2 through the diameter limitation of the pinion 12 and the through hole 11, and the fixing reliability of the elastic sheet 21 on the wire core is ensured.

In an embodiment of the present application, preferably, the upper surface of the sliding sleeve 4 is provided with a circular ring 41, the circular ring 41 is provided with a fixing hole 42, and the high-pressure rod 3 is uniformly provided with a plurality of vertical grooves 31; the fixing pin can penetrate into the fixing hole 42 on the sliding sleeve 4, and the fixing pin penetrates through the fixing hole 42 and then extends into the vertical groove 31 on the high-pressure rod 3 to fix the sliding sleeve 4 and the fixing hole 42 in the horizontal direction.

In one embodiment of the present application, it is preferable that the diameter of the fixing hole 42 is the same as the width of the vertical groove 31 on the high pressure rod 3; after the fixing is finished, the sliding sleeve 4 and the high-voltage rod 3 are reliably fixed, so that the alternating-current voltage withstand test is prevented from being influenced by shaking.

In one embodiment of the present application, preferably, a plurality of fixing holes 42 are uniformly distributed on the sliding sleeve 4 along the circumferential direction of the circular ring 41; the fixing reliability between the sliding sleeve 4 and the high-pressure rod 3 is ensured.

In an embodiment of the present application, preferably, the sliding sleeve 4 is sleeved on the high-pressure rod 3, the side wall of the sliding sleeve 4 close to the high-pressure rod 3 is rotatably provided with a plurality of rotating shafts 43, the rotating shafts 43 are uniformly distributed along the side wall of the sliding sleeve 4, every two adjacent rotating shafts 43 are set as a group, each group of rotating shafts 43 is provided with an adjusting ring 44, the rotating shafts 43 are provided with through grooves, and two ends of the adjusting ring 44 respectively pass through the through grooves on the two rotating shafts 43 in the group; the end of the adjusting ring 44 passes through the through slot and then extends into the vertical slot 31.

In one embodiment of the present application, preferably, an annular groove 45 is formed in the sliding sleeve 4, and the end of the connecting rod 5 close to the sliding sleeve 4 is provided with a sliding block 53, and the sliding block 53 is slidably mounted in the annular groove 45; the side of the sliding block 53 facing the high pressure rod 3 is further provided with an elastic ring 54, the elastic ring 54 is an elastic semicircular metal ring, and the elastic ring 54 can abut against the adjusting ring 44.

Specifically, when the sliding sleeve 4 is used, the sliding sleeve 4 and the high-pressure rod 3 only need to be relatively rotated, the end of the adjusting ring 44 is pushed through the vertical groove 31 on the high-pressure rod 3, all the adjusting rings 44 face one side along the side wall of the sliding sleeve 4, and after an included angle between the adjusting ring 44 and the tangential direction of the side wall of the sliding sleeve 4 is an acute angle, the sliding sleeve 4 and the high-pressure rod 3 are relatively fixed through the fixing pin; at this time, the end of the adjusting ring 44 abuts against the high voltage electrode, the outer portion of the adjusting ring 44 abuts against the elastic ring 54, and the elastic ring 54 is electrically connected with the plug 51; when the moving direction of the sliding block 53 is the same as the direction of the adjusting ring 44, the elastic ring 54 on the sliding block 53 can extrude the adjusting ring 44 to the direction close to the side wall of the sliding sleeve 4, so that the sliding block 53 can move normally, when the sliding block 53 moves reversely, the elastic ring 54 can shift the adjusting ring 44 to the direction far away from the side wall of the sliding sleeve 4, and the adjusting ring 44 can block the movement of the elastic ring 54; consequently, fixing the sinle silk in-process on test dish 1, accessible connecting rod 5 drives high pressure pole 3 and rotates, and then will connect the sinle silk joint in 2 fixed, through the power of lever principle increase rotation fluted disc 13, guarantees to connect 2 firm reliable to the fixed of sinle silk, after fixed finishing, connecting rod 5 antiport, connecting rod 5 can free rotation on sliding sleeve 4 promptly, will need lead to highly compressed joint 2 to peg graft plug 51 can.

It is worth mentioning that, after the experiment finishes, can carry out relative rotation with sliding sleeve 4 and high pressure pole 3 and change the angle between adjusting ring 44 and the sliding sleeve 4 lateral wall, orientation when making the orientation of adjusting ring 44 opposite with the chucking process, at this moment, can drive high pressure pole 3 through connecting rod 5 and rotate, will connect the sinle silk in 2 and remove the joint, easy operation is swift.

In one embodiment of the present application, it is preferable that the end of the adjusting ring 44 that protrudes into the vertical groove 31 is provided with a retaining block 46; the adjusting ring 44 is prevented from being disengaged from the rotating shaft 43, and reliable connection is ensured.

In an embodiment of the present application, preferably, as shown in fig. 7, a metal electrode 55 is disposed inside the plug 2, one end of the wire 52 inside the connecting rod 5 is connected to the elastic ring 54 on the sliding block 53, the other end of the wire 52 is connected to the metal electrode 55, a pressing piece 56 is disposed on the metal electrode 55, the pressing piece 56 is disposed in an inclined manner, and the size of the included angle between the pressing piece 56 and the vertical direction is equal to the size of the included angle between the conductive piece 23 and the vertical direction; after the plug 51 is inserted into the connector 2, the pressing piece 56 will abut against the outside of the conductive piece 23 on the top of the elastic piece 21 on the connector 2, so as to ensure reliable electrical connection.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A cable alternating current withstand voltage test device comprises a test disc and connectors, wherein a plurality of through holes are uniformly distributed in the circumferential direction of the test disc, and the connectors are slidably mounted in the through holes; the method is characterized in that: the connector is cylindrical, an opening is formed in the lower end of the connector, elastic sheets are uniformly distributed on the upper end of the connector in the circumferential direction, and a fixing sheet and a conducting sheet are arranged on the elastic sheets in the direction towards the inside of the connector; a pinion is rotatably arranged in the through hole, the pinion is sleeved outside the joint, internal threads are arranged inside the pinion, external threads are arranged on the outer surface of the joint, and the pinion is in threaded fit with the joint; a fluted disc is rotatably arranged at the center of the test disc and is meshed with the pinion; the upper surface of the fluted disc is fixedly provided with a high pressure rod, a sliding sleeve is sleeved outside the high pressure rod in a sliding manner, a plurality of connecting rods are rotatably arranged on the sliding sleeve, the end parts of the connecting rods far away from the sliding sleeve are provided with plugs, and the plugs can be sleeved on the joints; the high-voltage rod is electrically connected with the high-voltage test port, a lead is arranged inside the connecting rod, one end of the lead is communicated with the high-voltage rod, and the other end of the lead is communicated to the plug.

2. The cable ac withstand voltage test apparatus according to claim 1, wherein: the conducting strip on the elastic sheet at the upper end of the joint is positioned at the top end of the elastic sheet, and an included angle with the value range of 150-160 degrees is arranged between the conducting strip and the fixed sheet; the conducting strip and the fixing sheet face towards the inside of the joint.

3. The cable ac withstand voltage test apparatus according to claim 2, wherein: connect the surface vertical be provided with the spacing groove just the spacing groove is in it is equipped with a plurality ofly to connect surface circumference equipartition, the test panel correspond in the through-hole and be provided with the stopper, the stopper stretches into the spacing inslot.

4. The ac withstand voltage test apparatus according to claim 1, wherein: the sliding sleeve is sleeved on the high-pressure rod, a plurality of rotating shafts are rotatably arranged on the side wall of the sliding sleeve, which is close to the high-pressure rod, uniformly distributed along the side wall of the sliding sleeve, every two adjacent rotating shafts are set into a group, each group of rotating shafts is provided with an adjusting ring, the rotating shafts are provided with through grooves, and two ends of the adjusting rings respectively penetrate through the through grooves on the two rotating shafts in one group; a plurality of vertical grooves are uniformly distributed on the high pressure rod, and the end part of the adjusting ring penetrates through the through groove and then extends into the vertical grooves; the sliding sleeve and the high-pressure rod can be fixed relatively in the horizontal direction.

5. The cable AC withstand voltage test device according to claim 4, wherein: an annular groove is formed in the sliding sleeve, a sliding block is arranged at the end part, close to the sliding sleeve, of the connecting rod, and the sliding block is slidably arranged in the annular groove; the side of the slider towards the high-pressure rod is also provided with an elastic ring which is an elastic semicircular metal ring and can be abutted against the adjusting ring.

6. The cable ac withstand voltage test apparatus according to claim 5, wherein: the upper surface of sliding sleeve is provided with the ring, seted up the fixed orifices on the ring, a plurality of perpendicular grooves have been seted up to the equipartition on the high-pressure bar.

7. The cable ac withstand voltage test apparatus according to claim 6, wherein: the diameter of the fixing hole is the same as the width of the vertical groove on the high-pressure rod.

8. The cable ac withstand voltage test apparatus according to claim 7, wherein: the fixed orifices on the sliding sleeve are uniformly distributed along the circumferential direction of the circular ring.

9. The ac withstand voltage test device according to claim 8, wherein: the adjusting ring stretches into be provided with the anticreep piece on the tip in the vertical groove.

10. The ac withstand voltage test apparatus according to claim 9, wherein: the plug is internally provided with a metal electrode, a wire is arranged in the connecting rod, one end of the wire is connected to an elastic ring on the sliding block, the other end of the wire is connected to the metal electrode, an extrusion sheet is arranged on the metal electrode, the extrusion sheet is obliquely arranged, and the size of an included angle between the extrusion sheet and the vertical direction is equal to the size of an included angle between the conductive sheet and the vertical direction.