CN106768572B - Testing device and testing method for detecting stress of cable terminal of ring main unit - Google Patents
Testing device and testing method for detecting stress of cable terminal of ring main unit Download PDFInfo
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- CN106768572B CN106768572B CN201611227142.7A CN201611227142A CN106768572B CN 106768572 B CN106768572 B CN 106768572B CN 201611227142 A CN201611227142 A CN 201611227142A CN 106768572 B CN106768572 B CN 106768572B
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- 238000009434 installation Methods 0.000 claims abstract description 130
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
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Abstract
The invention relates to a testing device and a testing method for detecting the stress of a cable terminal of a ring main unit, wherein the testing device comprises: the cable fixing device comprises a mounting support, a mounting sleeve, a cable fixing seat, a force measuring mechanism and a tension device. The mounting bracket is provided with a sleeve mounting plate, and the sleeve mounting plate is provided with a mounting opening. The installation sleeve is arranged in the installation opening and used for being connected with a cable terminal of the to-be-tested ring main unit cable. The cable fixing seat is arranged on the sleeve mounting plate and used for fixing a ring main unit cable to be tested. The tension device is connected with the installation sleeve, and the force measuring mechanism is used for testing the tension applied to the installation sleeve by the tension device. The testing device for detecting the stress of the cable terminal of the ring main unit can be used for testing and analyzing the stress of the cable terminal of the ring main unit, so that data support can be provided for installation of a cable of the ring main unit, and the bad phenomenon that the electrical property of the cable terminal is reduced due to electric field insulation breakdown is avoided.
Description
Technical Field
The invention relates to the technical field of installation of cable terminals of ring main units, in particular to a testing device and a testing method for detecting stress of the cable terminals of the ring main units.
Background
The traditional installation method of the cable of the ring main unit comprises the following steps: peeling off the outer skin of the cable terminal of the ring main unit cable to expose the three-core cable, and respectively manufacturing cable accessories on the three-core cable, namely respectively installing a stress cone, three finger sleeves and wire lugs on the three-core cable; then, the cable terminal is installed in a preassembling position in the ring main unit through a reserved through hole in the ring main unit, and the ring main unit cable main body is fixed through a cable fixing seat; and finally, respectively and fixedly installing the three-core cable provided with the cable accessories on three installation sleeves on the ring main unit. However, after the ring main unit is used for a period of time, the cable terminals of some ring main units may be found to have a bad phenomenon that the electrical performance is reduced due to the electric field insulation breakdown.
Disclosure of Invention
Based on this, it is necessary to overcome the defects in the prior art, and a testing apparatus and a testing method for detecting the stress of the cable terminal of the ring main unit are provided, which can be used for testing and analyzing the stress of the cable terminal of the ring main unit, thereby providing data support for the installation of the cable of the ring main unit, and avoiding the bad phenomenon that the electrical performance of the cable terminal is reduced due to the insulation breakdown of the electric field.
The technical scheme is as follows: a testing arrangement for detecting looped netowrk cabinet cable termination atress includes: the mounting bracket is provided with a sleeve mounting plate, and the sleeve mounting plate is provided with a mounting opening; the installation sleeve is arranged in the installation opening and used for connecting a cable terminal of a to-be-tested ring main unit cable; the cable fixing seat is arranged on the sleeve mounting plate and used for fixing the to-be-tested ring main unit cable; the force measuring mechanism is used for testing the pulling force applied by the pulling force device to the installation sleeve.
A method for testing the stress of a cable terminal of a ring main unit adopts the testing device for detecting the stress of the cable terminal of the ring main unit, and comprises the following steps: peeling a cable terminal of a ring main unit cable to be tested, and manufacturing a cable accessory for the cable terminal; connecting the cable terminal with the cable accessory and a mounting sleeve, and fixing the to-be-tested ring main unit cable on the sleeve mounting plate through a cable fixing seat; pulling the mounting sleeve by using a pulling device, so that the mounting sleeve is statically fixed at the mounting opening and does not generate acting force on the sleeve mounting plate; and acquiring the tension applied to the installation sleeve by the tension device through a force measuring mechanism, and recording.
The testing device and the method for detecting the stress of the cable terminal of the ring main unit are characterized in that the ring main unit cable to be tested is fixed through the cable fixing seat, then the cable terminal of the ring main unit cable to be tested is installed on the installation sleeve, the tension device is connected with the installation sleeve to enable the installation sleeve to be fixed at the installation opening, the stress of the cable terminal on the installation sleeve is obtained through the force measuring mechanism, the model of the cable to be tested at the moment, the peeling length of the cable to be tested, the phase distance of the installation sleeve, and the position information of the installation sleeve and the cable fixing seat on the sleeve installation plate are recorded, and therefore the testing device and the method can be used for testing and analyzing the stress of the cable terminal of the ring main unit, and can provide data support for the installation of the ring main unit cable, and avoid the bad phenomenon that the electrical property of the cable terminal is reduced due to electric field insulation breakdown.
In one embodiment, the mounting openings include a first mounting opening, a second mounting opening and a third mounting opening which are arranged on the sleeve mounting plate at intervals in parallel, the mounting sleeve includes a first mounting sleeve, a second mounting sleeve and a third mounting sleeve, the force measuring mechanism includes a first force measuring mechanism, a second force measuring mechanism and a third force measuring mechanism, and the tension device includes a first tension device, a second tension device and a third tension device; the first installation sleeve, the second installation sleeve, the third installation sleeve, the first installation port, the second installation port and the third installation port are arranged in a one-to-one corresponding mode; the first force measuring mechanism, the second force measuring mechanism, the third force measuring mechanism, the first tension device, the second tension device and the third tension device are arranged correspondingly one by one; the first tension device, the second tension device and the third tension device are arranged in a one-to-one correspondence mode with the first installation sleeve, the second installation sleeve and the third installation sleeve. Generally, the cable of the ring main unit is a three-core cable, and the three-core cable is stripped and then respectively manufactured into cable accessories, and is respectively installed on three installation sleeves. Therefore, the first installation sleeve, the second installation sleeve and the third installation sleeve can be used for installing the three-core cable of the to-be-tested ring main unit cable respectively, and the stress on the first installation sleeve, the second installation sleeve and the third installation sleeve is tested synchronously through the first force measuring mechanism, the second force measuring mechanism and the third force measuring mechanism respectively, so that the three-core cable can be used for testing and analyzing the stress on the three-core cable of the ring main unit.
In one embodiment, the mounting opening is a bar-shaped opening arranged in a vertical direction, and the mounting sleeve can move along the bar-shaped opening. So, the pulling force device can drive the installation sleeve pipe and remove along the bar mouth, and the removal stops after the installation sleeve pipe removes to the preset position of sleeve pipe mounting panel, and the sleeve pipe atress that corresponds when the record installation sleeve pipe is in the different height position on the sleeve pipe mounting panel to the influence of analysis installation sleeve pipe's installation height to the sleeve pipe atress provides data support for looped netowrk cabinet cable erection.
In one embodiment, the sleeve mounting plates comprise a first sleeve mounting plate, a second sleeve mounting plate and a third sleeve mounting plate, and the first mounting port, the second mounting port and the third mounting port are respectively formed on the first sleeve mounting plate, the second sleeve mounting plate and the third sleeve mounting plate; the mounting bracket is provided with a first slide rail, and the first sleeve mounting plate and the third sleeve mounting plate are arranged on the first slide rail in a sliding manner; the cable fixing seat is arranged on the second sleeve mounting plate. Therefore, the first sleeve mounting plate and the third sleeve mounting plate can be moved along the first sliding rail, the distance between the first sleeve mounting plate, the third sleeve mounting plate and the second sleeve mounting plate is adjusted, different sleeve stress corresponding to different phase intervals of the three-core cable is recorded, the influence of the phase intervals of the three-core cable on the sleeve stress is analyzed, and data support is provided for cable installation of the ring main unit. In this embodiment, in order to make first sleeve mounting panel, third sleeve mounting panel remove along first slide rail, can set up the slider with first slide rail matched with on first sleeve mounting panel, third sleeve mounting panel, or set up the spout with first slide rail matched with.
In one embodiment, the first slide rail is provided with scale marks. Through the scale mark, can directly acquire the interval between first installation sleeve pipe, third installation sleeve pipe and the second installation sleeve pipe, it is easy and simple to handle, need not to adopt the scale to test the interval. Similarly, the first sleeve mounting plate, the second sleeve mounting plate and the third sleeve mounting plate are respectively provided with scale marks along the direction of the strip-shaped opening, so that the mounting position information of the mounting sleeve on the strip-shaped opening can be directly acquired, and the operation is simple and convenient.
In one embodiment, the testing device for detecting the stress of the cable terminal of the ring main unit further includes a first driving mechanism and a second driving mechanism, the first driving mechanism is used for driving the first bushing mounting plate to move along the first slide rail, and the second driving mechanism is used for driving the third bushing mounting plate to move along the first slide rail. So, drive first sleeve mounting panel, third sleeve mounting panel respectively through first actuating mechanism, second actuating mechanism and remove along first slide rail to every time first actuating mechanism, the first sleeve mounting panel of second actuating mechanism drive, third sleeve mounting panel remove along first slide rail and predetermine after the distance, alright obtain, record analysis operation in order to carry out a sleeve pipe atress, just need not the manual operation.
In one embodiment, the second sleeve mounting plate is provided with a second slide rail arranged along the vertical direction, and the cable fixing seat is arranged on the second slide rail and is in sliding fit with the second slide rail. So, can remove the cable fixing base along the second slide rail direction, come the fixed position on the sleeve pipe mounting panel of corresponding adjustment examination looped netowrk cabinet cable to when the cable fixing base is in the position of sleeve pipe mount pad difference, carry out the record to the atress of installation sleeve pipe, make and be used for carrying out the analysis to the influence of sleeve pipe atress to the different mounted position of cable fixing base on the sleeve pipe mount pad. In this embodiment, the second slide rail is provided with the scale mark, can directly acquire the positional information of cable fixing base on the sleeve pipe mounting panel, and is easy and simple to handle.
In one embodiment, the testing device for detecting the stress of the cable terminal of the ring main unit further includes a third driving mechanism, and the third driving mechanism is used for driving the cable fixing seat to move along the second sliding rail. The cable fixing seat is driven by the third driving mechanism to move to the preset position, and the ring main unit cable is fixed on the cable fixing seat after the cable fixing seat moves to the preset position, so that the position of the cable fixing seat is not required to be adjusted and fixed by hands, and the operation is simple and convenient.
In one embodiment, the first pulling device comprises a first horizontal pulling piece arranged horizontally and a first vertical pulling piece arranged vertically, one end of the first horizontal pulling piece is connected with the first mounting sleeve, the other end of the first horizontal pulling piece is connected with the mounting bracket, one end of the first vertical pulling piece is connected with the first mounting sleeve, and the other end of the first vertical pulling piece is connected with the mounting bracket; the first force measuring mechanism comprises a first transverse force gauge and a first vertical force gauge, the first transverse force gauge is used for acquiring the pulling force of the first transverse traction piece on the first installation sleeve, and the first vertical force gauge is used for acquiring the pulling force of the first vertical traction piece on the first installation sleeve; the second tension device comprises a second vertical traction piece arranged in the vertical direction, one end of the second vertical traction piece is connected with the second mounting sleeve, and the other end of the second vertical traction piece is connected with the mounting bracket; the second force measuring mechanism comprises a second vertical force gauge, and the second vertical force gauge is used for acquiring the tension of the second vertical pulling piece on the second installation sleeve; the third tension device comprises a third transverse traction piece arranged in the horizontal direction and a third vertical traction piece arranged in the vertical direction, one end of the third transverse traction piece is connected with the third mounting sleeve, the other end of the third transverse traction piece is connected with the mounting bracket, one end of the third vertical traction piece is connected with the third mounting sleeve, and the other end of the third vertical traction piece is connected with the mounting bracket; the third force measuring mechanism comprises a third transverse force gauge and a third vertical force gauge, the third transverse force gauge is used for acquiring the pulling force of the third transverse pulling piece on the third installation sleeve, and the third vertical force gauge is used for acquiring the pulling force of the third vertical pulling piece on the third installation sleeve.
Drawings
Fig. 1 is a schematic structural diagram of a testing apparatus for detecting a stress on a cable terminal of a ring main unit according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a state of a stress test of a ring main unit cable to be tested by the testing device for detecting stress of a ring main unit cable terminal according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a testing apparatus for detecting a stress on a cable terminal of a ring main unit according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a testing apparatus for detecting a stress on a cable terminal of a ring main unit according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a testing apparatus for detecting a stress on a cable terminal of a ring main unit according to another embodiment of the present invention;
fig. 6 is a specific schematic diagram of a force measuring mechanism and a tension device in the testing device for detecting the stress on the cable terminal of the ring main unit according to the embodiment of the invention.
10. Mounting bracket, 11, sleeve mounting plate, 111, first sleeve mounting plate, 112, second sleeve mounting plate, 113, third sleeve mounting plate, 12, mounting port, 121, first mounting port, 122, second mounting port, 123, third mounting port, 13, first slide rail, 14, second slide rail, 20, mounting sleeve, 21, first mounting sleeve, 22, second mounting sleeve, 23 third mounting sleeve, 30, cable fixing seat, 40, force measuring mechanism, 41, first force measuring mechanism, 411, first transverse force gauge, 412, first vertical force gauge, 42, second force measuring mechanism, 421, a second vertical dynamometer, 43, a third force measuring mechanism, 431, a third horizontal dynamometer, 432, a third vertical dynamometer, 50, a tension device, 51, a first tension device, 511, a first horizontal tension member, 512, a first vertical tension member, 52, a second tension device, 521, a second vertical tension member, 53, a third tension device, 531, a third horizontal tension member, 532, a third vertical tension member, 60, a cable of a ring main unit to be tested, 71, a first driving mechanism, 72, a second driving mechanism, 73 and a third driving mechanism.
Detailed Description
The following examples illustrate the invention in detail:
as shown in fig. 1 and fig. 2, a testing apparatus for detecting a stress on a cable terminal of a ring main unit according to an embodiment of the present invention includes: the cable tension device comprises a mounting bracket 10, a mounting sleeve 20, a cable fixing seat 30, a force measuring mechanism 40 and a tension device 50. The mounting bracket 10 is provided with a sleeve mounting plate 11. The sleeve mounting plate 11 is provided with a mounting port 12. The size and the appearance of the mounting bracket 10 can be designed correspondingly to the size and the appearance of the ring main unit body, so that the real installation environment of the cable of the ring main unit can be better simulated.
The installation sleeve 20 is arranged in the installation opening 12, and the installation sleeve 20 is used for connecting a cable terminal of a ring main unit cable 60 to be tested. The cable fixing seat 30 is arranged on the sleeve mounting plate 11, and the cable fixing seat 30 is used for fixing the to-be-tested ring main unit cable 60. When the ring main unit cable to be tested 60 is subjected to stress test, the ring main unit cable to be tested 60 is fixed through the cable fixing seat 30, and a cable terminal is installed on the installation sleeve 20, so that the real installation environment of the ring main unit cable can be better simulated.
The tension device 50 is connected to the installation casing 20, and the force measuring mechanism 40 is configured to test a tension applied to the installation casing 20 by the tension device 50.
Foretell a testing arrangement for detecting looped netowrk cabinet cable termination atress, it is fixed through cable fixing base 30 at first to await measuring looped netowrk cabinet cable 60, then make the cable termination of awaiting measuring looped netowrk cabinet cable 60 install on installation sleeve 20, pulling force device 50 connects installation sleeve 20 and makes installation sleeve 20 fix at installing port 12, acquire the stress that installation sleeve 20 received the cable termination through the dynamometer mechanism 40, and record the model of the cable that awaits measuring this moment, the length of peeling off of the cable that awaits measuring, the looks interval of installation sleeve 20, the position information of installation sleeve 20 and cable fixing base 30 on sleeve mounting panel 11, can be used for testing analysis to the atress at the cable termination of looped netowrk cabinet promptly, thereby can make the cable termination atress less data support of providing for how installing the looped netowrk cabinet cable. When the stress of the cable terminal of the ring main unit cable 60 to be tested is small, the electric field distortion phenomenon can be avoided in the long-term operation process of the cable terminal, and therefore the bad phenomenon that the electric performance of the cable terminal is reduced due to electric field insulation breakdown can be overcome.
Generally, the cable of the ring main unit is a three-core cable, and the three-core cable is stripped and then respectively manufactured into cable accessories, and is respectively installed on the three installation sleeves 20. Referring to fig. 2, in the present embodiment, the mounting holes 12 include a first mounting hole 121, a second mounting hole 122, and a third mounting hole 123 that are arranged on the sleeve mounting plate 11 at intervals in parallel. The mounting sleeve 20 comprises a first mounting sleeve 21, a second mounting sleeve 22 and a third mounting sleeve 23. The force measuring mechanism 40 includes a first force measuring mechanism 41, a second force measuring mechanism 42 and a third force measuring mechanism 43. The tension device 50 includes a first tension device 51, a second tension device 52 and a third tension device 53. The first installation sleeve 21, the second installation sleeve 22, the third installation sleeve 23, the first installation opening 121, and the second installation opening 122 are correspondingly arranged one by one with the third installation opening 123. The first force measuring mechanism 41, the second force measuring mechanism 42 and the third force measuring mechanism 43 are arranged in a one-to-one correspondence with the first tension device 51, the second tension device 52 and the third tension device 53. The first pulling force device 51, the second pulling force device 52, the third pulling force device 53, the first installation sleeve 21, the second installation sleeve 22 and the third installation sleeve 23 are correspondingly arranged one by one. Therefore, the first installation sleeve 21, the second installation sleeve 22 and the third installation sleeve 23 can be respectively used for installing the three-core cable of the to-be-tested ring main unit cable 60, and the stresses on the first installation sleeve 21, the second installation sleeve 22 and the third installation sleeve 23 are synchronously tested through the first force measuring mechanism 41, the second force measuring mechanism 42 and the third force measuring mechanism 43, so that the stresses on the three-core cable of the ring main unit can be tested and analyzed.
In this embodiment, the mounting opening 12 is a strip-shaped opening arranged along the vertical direction. The mounting sleeve 20 is movable along the strip-shaped mouth. So, pulling force device 50 can drive installation sleeve 20 and remove along the bar mouth, and the stop moving after installation sleeve 20 removes the preset position to sleeve mounting panel 11, the sleeve atress that corresponds when recording installation sleeve 20 different height position on sleeve mounting panel 11 to the influence of the installation height of analysis installation sleeve 20 to the sleeve atress provides data support for looped netowrk cabinet cable erection.
Referring to fig. 3, the bushing mounting plates 11 include a first bushing mounting plate 111, a second bushing mounting plate 112, and a third bushing mounting plate 113. The first mounting opening 121, the second mounting opening 122 and the third mounting opening 123 are respectively formed in the first sleeve mounting plate 111, the second sleeve mounting plate 112 and the third sleeve mounting plate 113. The mounting bracket 10 is provided with a first slide rail 13. The first sleeve mounting plate 111 and the third sleeve mounting plate 113 are slidably disposed on the first slide rail 13. The cable mount 30 is disposed on the second ferrule mounting plate 112. Therefore, the first bushing mounting plate 111 and the third bushing mounting plate 113 can be moved along the first slide rail 13 to adjust the distance between the first bushing mounting plate 111, the third bushing mounting plate 113 and the second bushing mounting plate 112, record the stress of different bushings corresponding to different phase intervals of the three-core cable, analyze the influence of the phase intervals of the three-core cable on the stress of the bushings, and provide data support for the installation of the cable of the ring main unit. In this embodiment, in order to enable the first sleeve mounting plate 111 and the third sleeve mounting plate 113 to move along the first slide rail 13, a sliding block matched with the first slide rail 13 may be disposed on the first sleeve mounting plate 111 and the third sleeve mounting plate 113, or a sliding slot matched with the first slide rail 13 may be disposed on the first sleeve mounting plate 111 and the third sleeve mounting plate 113.
Wherein, the first slide rail 13 is provided with scale marks. Through the scale mark, can directly acquire the interval between first installation sleeve 21, third installation sleeve 23 and the second installation sleeve 22, it is easy and simple to handle, need not to adopt the scale to test the interval. Similarly, the first sleeve mounting plate 111, the second sleeve mounting plate 112, and the third sleeve mounting plate 113 are respectively provided with scale marks along the direction of the bar-shaped opening, so that the mounting position information of the mounting sleeve 20 on the bar-shaped opening can be directly acquired, and the operation is simple.
In addition, referring to fig. 4, the testing apparatus for detecting the stress on the cable terminal of the ring main unit further includes a first driving mechanism 71 and a second driving mechanism 72. The first driving mechanism 71 is configured to drive the first sleeve mounting plate 111 to move along the first slide rail 13, and the second driving mechanism 72 is configured to drive the third sleeve mounting plate 113 to move along the first slide rail 13. Therefore, the first and third sleeve mounting plates 111 and 113 are respectively driven by the first and second driving mechanisms 71 and 72 to move along the first slide rail 13, and when the first and second driving mechanisms 71 and 72 drive the first and third sleeve mounting plates 111 and 113 to move along the first slide rail 13 by a preset distance, the sleeve stress can be obtained and recorded for analysis once, and the operation is not required to be performed by a human hand.
Referring to fig. 5, the second sleeve mounting plate 112 is provided with a second slide rail 14 arranged along the vertical direction. The cable fixing seat 30 is disposed on the second slide rail 14 and is in sliding fit with the second slide rail 14. So, can remove cable fixing base 30 along the 14 directions of second slide rail, come corresponding adjustment to await measuring looped netowrk cabinet cable 60's the fixed position on sleeve pipe mounting panel 11 to when cable fixing base 30 different positions on the sleeve pipe mounting seat, carry out the record to the atress of installation sleeve 20, make and be used for carrying out the analysis to the influence of sleeve pipe atress to the different mounted positions of cable fixing base 30 on the sleeve pipe mounting seat. In this embodiment, the second slide rail 14 is provided with scale marks, so that the position information of the cable fixing seat 30 on the sleeve mounting plate 11 can be directly acquired, and the operation is simple and convenient.
In addition, the testing device for detecting the stress of the cable terminal of the ring main unit further comprises a third driving mechanism 73. The third driving mechanism 73 is used for driving the cable fixing seat 30 to move along the second sliding rail 14. The cable fixing seat 30 is driven to move to the preset position through the third driving mechanism 73, and after the cable fixing seat 30 moves to the preset position, the ring main unit cable is fixed on the cable fixing seat 30, so that the position of the cable fixing seat 30 is not required to be adjusted and fixed by hands, and the operation is simple and convenient.
Referring to fig. 6, the first pulling device 51 includes a first horizontal pulling member 511 disposed horizontally and a first vertical pulling member 512 disposed vertically. One end of the first transverse pulling member 511 is connected to the first mounting sleeve 21, and the other end of the first transverse pulling member 511 is connected to the mounting bracket 10. One end of the first vertical pulling part 512 is connected to the first mounting sleeve 21, and the other end of the first vertical pulling part 512 is connected to the mounting bracket 10. The first force measuring mechanism 41 comprises a first lateral force gauge 411 and a first vertical force gauge 412. The first lateral dynamometer 411 is used for acquiring the pulling force of the first lateral pulling piece 511 on the first installation casing 21, and the first vertical dynamometer 412 is used for acquiring the pulling force of the first vertical pulling piece 512 on the first installation casing 21. The force applied to the first installation casing 21 can be calculated by measuring the tension of the first lateral tension member 511 in the lateral direction of the first installation casing 21 by the first lateral tension meter 411, measuring the tension of the first vertical tension member 512 in the vertical direction of the first installation casing 21 by the first vertical tension meter 412, and measuring the angle between the first lateral tension member 511 and the first vertical tension member 512.
The second pulling device 52 includes a second vertical pulling member 521 arranged in a vertical direction. One end of the second vertical pulling member 521 is connected to the second mounting sleeve 22, and the other end of the second vertical pulling member 521 is connected to the mounting bracket 10. The second force measuring mechanism 42 includes a second vertical force gauge 421, and the second vertical force gauge 421 is configured to obtain a pulling force of the second vertical pulling member 521 on the second installation sleeve 22. The second vertical dynamometer 421 can measure the vertical pulling force of the second vertical pulling member 521 on the second installation sleeve 22, and the vertical pulling force of the second vertical pulling member 521 on the second installation sleeve 22 is the magnitude of the stress on the second installation sleeve 22.
The third pulling force device 53 comprises a third horizontal pulling member 531 arranged in the horizontal direction and a third vertical pulling member 532 arranged in the vertical direction. One end of the third transverse traction member 531 is connected to the third mounting sleeve 23, and the other end of the third transverse traction member 531 is connected to the mounting bracket 10. One end of the third vertical pulling part 532 is connected to the third installation casing 23, and the other end of the third vertical pulling part 532 is connected to the installation support 10. The third force measuring mechanism 43 comprises a third transverse force gauge 431 and a third vertical force gauge 432. The third transverse dynamometer 431 is used for acquiring the pulling force of the third transverse pull 531 on the third installation casing 23, and the third vertical dynamometer 432 is used for acquiring the pulling force of the third vertical pull 532 on the third installation casing 23.
The embodiment of the invention provides a method for testing the stress of a cable terminal of a ring main unit, which adopts a testing device for detecting the stress of the cable terminal of the ring main unit, and comprises the following steps:
the method comprises the following steps of (1) carrying out peeling treatment on a cable terminal of a ring main unit cable 60 to be tested, and manufacturing a cable accessory on the cable terminal;
connecting the cable terminal with the cable accessory and a mounting sleeve 20, and fixing the to-be-tested ring main unit cable 60 on the sleeve mounting plate 11 through a cable fixing seat 30;
pulling the installation sleeve 20 by using a pulling device 50, so that the installation sleeve 20 is statically fixed at the installation opening 12 and does not generate acting force on the sleeve installation plate 11; in this way, the action force of the installation sleeve 20 on the tensile force 50 is equivalent to the action force of the cable terminal on the installation sleeve 20, and analyzing the sleeve force of the installation sleeve 20 is equivalent to analyzing the cable terminal force.
The tension applied by the tension device 50 to the installation sleeve 20 is obtained by the force measuring mechanism 40 and recorded.
The technical effect of the testing method for the stress of the cable terminal of the ring main unit is brought by the testing device for detecting the stress of the cable terminal of the ring main unit, and the generated technical effect is the same as that of the testing device for detecting the stress of the cable terminal of the ring main unit, so that the repeated description is omitted.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a testing arrangement for detecting looped netowrk cabinet cable termination atress which characterized in that includes:
the mounting bracket is provided with a sleeve mounting plate, and the sleeve mounting plate is provided with a mounting opening;
the installation sleeve is arranged in the installation opening and used for connecting a cable terminal of a to-be-tested ring main unit cable;
the cable fixing seat is arranged on the sleeve mounting plate and used for fixing the to-be-tested ring main unit cable;
the force measuring mechanism is connected with the installation sleeve and used for testing the pulling force applied by the pulling device on the installation sleeve; the mounting openings comprise a first mounting opening, a second mounting opening and a third mounting opening which are arranged on the sleeve mounting plate at intervals in parallel, the mounting sleeve comprises a first mounting sleeve, a second mounting sleeve and a third mounting sleeve, the force measuring mechanism comprises a first force measuring mechanism, a second force measuring mechanism and a third force measuring mechanism, and the tension device comprises a first tension device, a second tension device and a third tension device; the first installation sleeve, the second installation sleeve, the third installation sleeve, the first installation port, the second installation port and the third installation port are arranged in a one-to-one corresponding mode; the first force measuring mechanism, the second force measuring mechanism, the third force measuring mechanism, the first tension device, the second tension device and the third tension device are arranged correspondingly one by one; the first tension device, the second tension device, the third tension device, the first mounting sleeve, the second mounting sleeve and the third mounting sleeve are arranged correspondingly one by one; the first tension device comprises a first transverse traction piece arranged in the horizontal direction and a first vertical traction piece arranged in the vertical direction, one end of the first transverse traction piece is connected with the first mounting sleeve, the other end of the first transverse traction piece is connected with the mounting bracket, one end of the first vertical traction piece is connected with the first mounting sleeve, and the other end of the first vertical traction piece is connected with the mounting bracket; the first force measuring mechanism comprises a first transverse force gauge and a first vertical force gauge, the first transverse force gauge is used for acquiring the pulling force of the first transverse traction piece on the first installation sleeve, and the first vertical force gauge is used for acquiring the pulling force of the first vertical traction piece on the first installation sleeve; the second tension device comprises a second vertical traction piece arranged in the vertical direction, one end of the second vertical traction piece is connected with the second mounting sleeve, and the other end of the second vertical traction piece is connected with the mounting bracket; the second force measuring mechanism comprises a second vertical force gauge, and the second vertical force gauge is used for acquiring the pulling force of the second vertical pulling piece on the second installation sleeve; the third tension device comprises a third transverse traction piece arranged in the horizontal direction and a third vertical traction piece arranged in the vertical direction, one end of the third transverse traction piece is connected with the third mounting sleeve, the other end of the third transverse traction piece is connected with the mounting bracket, one end of the third vertical traction piece is connected with the third mounting sleeve, and the other end of the third vertical traction piece is connected with the mounting bracket; the third force measuring mechanism comprises a third transverse force gauge and a third vertical force gauge, the third transverse force gauge is used for acquiring the pulling force of the third transverse traction piece on the third installation sleeve, and the third vertical force gauge is used for acquiring the pulling force of the third vertical traction piece on the third installation sleeve; the sleeve mounting plates comprise a first sleeve mounting plate, a second sleeve mounting plate and a third sleeve mounting plate, and the first mounting port, the second mounting port and the third mounting port are respectively formed in the first sleeve mounting plate, the second sleeve mounting plate and the third sleeve mounting plate; the installing port is a strip-shaped port arranged along the vertical direction, and the first sleeve mounting plate, the second sleeve mounting plate and the third sleeve mounting plate are respectively provided with scale marks along the direction of the strip-shaped port.
2. The testing device for detecting the stress of the cable terminal of the ring main unit as claimed in claim 1, wherein the ring main unit cable is a three-core cable.
3. The testing device for detecting the stress of the cable terminal of the ring main unit as claimed in claim 1, wherein the mounting sleeve can move along the strip-shaped opening.
4. The testing device for detecting the stress of the cable terminal of the ring main unit as claimed in claim 1, wherein the mounting bracket is provided with a first slide rail, and the first bushing mounting plate and the third bushing mounting plate are slidably disposed on the first slide rail; the cable fixing seat is arranged on the second sleeve mounting plate.
5. The testing device for detecting the stress of the cable terminal of the ring main unit as claimed in claim 4, wherein the first sliding rail is provided with scale marks.
6. The testing device for detecting the stress of the cable terminal of the ring main unit according to claim 4, further comprising a first driving mechanism and a second driving mechanism, wherein the first driving mechanism is used for driving the first sleeve mounting plate to move along the first sliding rail, and the second driving mechanism is used for driving the third sleeve mounting plate to move along the first sliding rail.
7. The testing device for detecting the stress on the cable terminal of the ring main unit as claimed in claim 4, wherein the second bushing mounting plate is provided with a second slide rail arranged along a vertical direction, and the cable fixing seat is arranged on the second slide rail and is in sliding fit with the second slide rail.
8. The testing device for detecting the stress on the cable terminal of the ring main unit as claimed in claim 7, further comprising a third driving mechanism, wherein the third driving mechanism is configured to drive the cable fixing seat to move along the second sliding rail.
9. The testing device for detecting the stress of the cable terminal of the ring main unit as claimed in claim 7, wherein the second slide rail is provided with scale marks.
10. A method for testing stress of a cable terminal of a ring main unit, which is characterized in that the testing device for testing the stress of the cable terminal of the ring main unit according to any one of claims 1 to 9 is adopted, and comprises the following steps:
peeling a cable terminal of a ring main unit cable to be tested, and manufacturing a cable accessory for the cable terminal;
connecting the cable terminal with the cable accessory and a mounting sleeve, and fixing the ring main unit cable to be tested on the sleeve mounting plate through a cable fixing seat;
pulling the mounting sleeve by using a pulling device, so that the mounting sleeve is statically fixed at the mounting opening and does not generate acting force on the sleeve mounting plate;
and acquiring the tensile force applied to the installation sleeve by the tensile force device through the force measuring mechanism, and recording.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611227142.7A CN106768572B (en) | 2016-12-27 | 2016-12-27 | Testing device and testing method for detecting stress of cable terminal of ring main unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611227142.7A CN106768572B (en) | 2016-12-27 | 2016-12-27 | Testing device and testing method for detecting stress of cable terminal of ring main unit |
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| CN106768572A CN106768572A (en) | 2017-05-31 |
| CN106768572B true CN106768572B (en) | 2023-01-20 |
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| CN109193518A (en) * | 2018-10-30 | 2019-01-11 | 广东电网有限责任公司 | Cable connection box |
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| CN206311257U (en) * | 2016-12-27 | 2017-07-07 | 广州供电局有限公司 | Test device for detecting ring main unit cable termination stress |
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| US5365797A (en) * | 1994-01-07 | 1994-11-22 | Mccrory Iii Claud O | Device for measuring the amount of force applied to a cable |
| CN101923140A (en) * | 2010-09-07 | 2010-12-22 | 北京必成达电缆附件有限公司 | Withstand test device of sleeve of looped network cabinet equipment |
| CN201984130U (en) * | 2011-01-04 | 2011-09-21 | 江苏远航电缆附件有限公司 | Tooling device for testing T-shaped joint of cable |
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| CN106768572A (en) | 2017-05-31 |
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Effective date of registration: 20231222 Address after: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee before: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Patentee before: CCCC-FHDI ENGINEERING Co.,Ltd. Effective date of registration: 20231222 Address after: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Patentee after: CCCC-FHDI ENGINEERING Co.,Ltd. Address before: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. Patentee before: CCCC-FHDI ENGINEERING Co.,Ltd. |