CN204373992U - The universal fixture of disconnector tension test - Google Patents
The universal fixture of disconnector tension test Download PDFInfo
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- CN204373992U CN204373992U CN201420852039.1U CN201420852039U CN204373992U CN 204373992 U CN204373992 U CN 204373992U CN 201420852039 U CN201420852039 U CN 201420852039U CN 204373992 U CN204373992 U CN 204373992U
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Abstract
The utility model discloses a kind of universal fixture of disconnector tension test, comprises two pin ball bars, four pieces of fixed heads and four coupling bolts; Fixed head is furnished with three through holes; Four pieces of fixed heads from top to bottom be arranged in parallel, and the through hole of the both sides of the first fixed head and the second fixed head is passed by two coupling bolts and fixed by nut; The through hole of the both sides of the 3rd fixed head and the 4th fixed head is passed by another two coupling bolts and is fixed by nut; The intermediate throughholes of the first fixed head supplies the screw rod of a ball foot lever pass and fixed by nut; The intermediate throughholes of the 4th fixed head supplies the screw rod of another ball foot lever pass and fixed by nut; Detachment device noumenon to be tested is installed between the second fixed head and the 3rd fixed head.The utility model is suitable for current most disconnector, without the need to sending trial product custom-made bulb, ball-and-socket for often kind again, farthest reducing frock and manufacturing cost, decreasing unnecessary waste.
Description
[technical field]
The utility model relates to disconnector experimental technique field, particularly a kind of disconnector tension test frock.
[background technology]
Disconnector is as the ancillary attachment of lightning arrester, connect with lightning arrester and use, when degradation phenomena appears in lightning arrester, be about to be damaged, lost efficacy and cause system short-circuit to have a power failure or blast jeopardizes electrical equipment and personal safety time, disconnector can rapid action, exited from transmission system by fault lightning arrester, the continuous earth of timely elimination system also provides obvious mark for fault lightning arrester, is convenient to maintainer's Timeliness coverage trouble spot and carries out examine and replace; And when lightning arrester is in normal operating conditions; disconnector is then failure to actuate and should is Low ESR (compared with lightning arrester); the not protection feature of the former duty of influential system and lightning arrester; lightning arrester is made to reach the request for utilization of " non-maintaining "; guarantee stability and the security of system cloud gray model, improve power supply quality.
In generating plant, railway, civil aviaton, communication and some other important power supply place, disconnector installed all in a large number by 35kV and the various lightning arrester of following electric pressure; For domestic emerging 35kV ~ 500kV line type gapless metal-oxide lighting arrester (comprising protection cable and power station type suspension installation); consider that infield is remote, installation position sets high; safeguard, overhaul the features such as inconvenience, recommend the disconnector installing particular design.Abroad, the distribution lightning arrester run in the electrical network of U.S., Europe, Japan and south east asia and suspended-type surge arrester have installed disconnector all.
Disconnector is in actual installation, operation, subject certain stretching and bending resistance load, the stretching of disconnector and anti-bending strength directly affect the product quality of disconnector, once there is crackle or breakage because of external force in the shell of disconnector, it is inner by the ampere-second characteristic of impact that moisture invades disconnector, disconnector even can be caused time serious to rupture, come off, directly affect the safe operation of electrical network.But existing domestic and international disconnector standard, not yet formulate the content of the test of examination disconnector mechanical property.
Latest edition IEC 60099-4 lightning arrester standard and Ministry of Energy NB/T XXXX " metal oxide arrester disconnector " standard, added disconnector mechanical test content, proposes specific requirement to the stretching of disconnector and anti-bending strength.
Disconnector small volume, the diameter of body generally at Φ 40mm ~ Φ 52mm, height 46mm ~ 55mm; One of body is M10 ~ M16 stainless steel bolt, and spiro rod length is about 30mm ~ 45mm, one for going deep into tapped M12 ~ M24 screw of body interior, the degree of depth is about 25mm ~ 35mm.
At present, the puller system in laboratory normally carries out (the insulator product one be ball-and-socket, one be bulb) of the tension test of insulator product, and for disconnector product, when carrying out tension test, supporting test tool must be had for installing disconnector.
Normally press the pin ball size of 220kV and following composite insulator product, process one for be linkage flag be in one end 16 pin ball, the other end is then processed as threaded bolt by dimension of inner screw thread bottom detachment device noumenon; Reprocess one for be linkage flag be in one end 16 pin ball, the other end is then tapped deep hole by detachment device noumenon upper bolt dimensioned.At disconnector two ends, the above-mentioned pin ball through special processing is installed, forms the shape of similar insulator product, carry out tension test according to insulator product.
Usually, be install a pair bulb, ball-and-socket at disconnector two, not only workload is large, and often occurs deformed threads in tension test, cannot dismantle the situation of ball-and-socket.The tension test of several typical disconnectors such as bakelite shell, plastic casing, metal shell is shown: the fail in tension value scope of disconnector is at 2.3kN ~ 44kN.
Through inquiry, all useless universal fixture in disconnector tension test and experimental technique are reported both at home and abroad at present.
[utility model content]
The purpose of this utility model is the universal fixture providing a kind of disconnector tension test.
To achieve these goals, the utility model adopts following technical scheme:
The universal fixture of disconnector tension test, comprises two pin ball bars, four pieces of fixed heads and four coupling bolts; One end of pin ball bar is the ball pin supporting with cupping machine, and the other end is screw rod; Fixed head is furnished with three through holes; Coupling bolt two ends are equipped with external thread; Four pieces of fixed heads from top to bottom be arranged in parallel, are called the first fixed head, the second fixed head, the 3rd fixed head and the 4th fixed head successively; The through hole of the both sides of the first fixed head and the second fixed head is passed by two coupling bolts and is fixed by nut; The through hole of the both sides of the 3rd fixed head and the 4th fixed head is passed by another two coupling bolts and is fixed by nut; The intermediate throughholes of the first fixed head supplies the screw rod of a ball foot lever pass and fixed by nut; The intermediate throughholes of the 4th fixed head supplies the screw rod of another ball foot lever pass and fixed by nut; The ball pin being positioned at the ball foot lever of top is positioned at above the first fixed head; The ball pin being positioned at the ball foot lever of below is positioned at below the 4th fixed head; Detachment device noumenon to be tested is installed between the second fixed head and the 3rd fixed head; The disconnector upper bolt on detachment device noumenon top to be tested is passed the intermediate throughholes of the second fixed head and is fixed by nut; The intermediate throughholes that disconnector lower end coupling bolt passes the 3rd fixed head from the below of the 3rd fixed head is fixedly connected with detachment device noumenon bottom to be tested.
Preferably, the specification of four pieces of fixed heads is identical, and material is nickel chromium molybdenum steel.
Preferably, the specification of two pin ball bars is identical, and material is nickel chromium molybdenum steel.
Preferably, four coupling bolts are high strength low-carbon steel with the material of the nut be fixed on coupling bolt.
Preferably, on coupling bolt, the screw thread at two ends is the screw thread of M16.
Preferably, the pin ball bar other end is the screw thread on screw rod is the screw thread of M12.
Preferably, coupling bolt is registered as 2A level with the thread tolerance cooperation being fixed on the nut on coupling bolt; The screw rod of the pin ball bar other end coordinates with the thread tolerance of nut and is registered as 2A level.
Preferably, the ball pin being arranged in the ball foot lever of top is installed on upper and lower two fixtures of puller system respectively with the ball pin of the ball foot lever being positioned at below, and the thread tolerance fit quality that ball pin and the screw-internal thread fit of corresponding fixture adopt is 2B level.
Compared with prior art, the utility model beneficial effect is:
1. economy.Be suitable for current most disconnector, without the need to sending trial product custom-made bulb, ball-and-socket for often kind again, farthest reduce frock and manufacturing cost, decreasing unnecessary waste.
2. property easy to use.The design's simple installation, is easy to support the use with cupping machine; By the nut height on adjustment standing screw, the control to frock height easily can be realized.
3. long-life property.Frock adopts high-strength nickel chrome molybdenum quenched and tempered steel material, is applicable to Long-Time Service.
4. reusability.The design is simple, and strength of parts is high and be easy to processing, can repeatedly use.
5. high universalizable.Most disconnector all can adopt this test tool, not by disconnector structural limitations.
[accompanying drawing explanation]
Fig. 1 is frock schematic diagram of the present utility model;
Fig. 2 is the structural representation of fixed head;
Fig. 3 is the cut-open view along A-A line in Fig. 2;
Fig. 4 is the structural representation of ball foot lever.
[embodiment]
Refer to shown in Fig. 1 to Fig. 4, the universal fixture of a kind of disconnector tension test of the utility model, comprise two pin ball bars, 2, four pieces of fixed heads 5 and four coupling bolts 6.
One end of pin ball bar 2 be with cupping machine supporting be labeled as 16 ball pin 1, the other end is set to screw rod.
Fixed head 5 does not only have three through holes, the through hole of both sides is used for being connected with coupling bolt 6, and middle through hole is used for being connected with disconnector or ball foot lever 2.
Coupling bolt 6 two ends are equipped with external thread.
Four pieces of fixed heads 5 from top to bottom be arranged in parallel, are called the first fixed head, the second fixed head, the 3rd fixed head and the 4th fixed head successively; The through hole of the both sides of the first fixed head and the second fixed head is passed by two coupling bolts 6 and passes through M16 nut 3 and fixes; The through hole of the both sides of the 3rd fixed head and the 4th fixed head is passed by another two coupling bolts 6 and passes through M16 nut 3 and fixes; By the adjustment regulating the height of M16 nut 3 can realize spacing between four pieces of fixed heads, namely realize the fine setting to frock length.
The intermediate throughholes of the first fixed head supplies the screw rod of a ball foot lever 2 to pass and passes through M12 nut 4 to fix, and the ball pin 1 of this ball foot lever 2 is positioned at above the first fixed head; The intermediate throughholes of the 4th fixed head supplies the screw rod of another ball foot lever 2 to pass and passes through M12 nut 4 to fix, and the ball pin 1 of this ball foot lever 2 is positioned at below the 4th fixed head.
Detachment device noumenon 8 to be tested is installed between the second fixed head and the 3rd fixed head; The disconnector upper bolt 7 on detachment device noumenon 8 top to be tested is passed the intermediate throughholes of the second fixed head and is fixed by nut; The intermediate throughholes that disconnector lower end coupling bolt 9 passes the 3rd fixed head from the below of the 3rd fixed head is fixedly connected with detachment device noumenon 8 bottom to be tested.
Disconnector small volume, bearing capacity (tensile value) calculated value of its bolt and internal thread is 60kN.Research shows: the fail in tension value of disconnector common is at present about 44kN to the maximum, consider durability and the physical strength of frock, get the safe handling coefficient of 2.5 times, require that frock at least can tolerate the pulling force of 2.5 × 44=110kN and visible deformation and breakage should not occur.
Four pieces of fixed head 5 specifications are identical, and material is nickel chromium molybdenum steel; Two pin ball bar 2 specifications are identical, and material is nickel chromium molybdenum steel; The material of four coupling bolts 6 and M16 nut 3 is high strength low-carbon steel.Fixed head 5 have employed high-strength nickel chrome-molybdenum steel; Nickel chromium molybdenum steel not only has anti-oxidant, the anticorrosive and fatigue durability of height, also has the advantage that tensile strength is high, is applicable to the various wear-resisting and anticorrosive part of preparation, can ensure that frock bolt does not deform when tension test and breakage.
Nickel chromium molybdenum steel prepare fixed head, its bearing capacity (tensile value) calculated value is not less than 139kN, be greater than design tension 110kN requirement, can ensure that frock fixed head does not occur bending and deformation when tension test.
Generic connectivity is labeled as the pin ball of 16, and its tensile value is greater than 70kN, and be labeled as the pin ball 1 of 16 with the preparation of high-strength nickel chrome-molybdenum steel, its tensile value is not less than 200kN; The other end is processed as M12 screw rod, and be conveniently connected with fixed head, its tensile value is also not less than 200kN, can ensure that pin ball and screw thread do not deform when tension test and breakage.
Ball foot lever 2, fixed head 5 are connected with nut by the coupling bolt 6 of high strength, and its tensile strength is 2 ~ 3 times of plain bolt and nut, can ensure that frock does not deform when tension test and breakage.
For ensureing that whole frock is installing the vertical degree with Impact direction after test product, external thread coordinates and adopts the most general thread tolerance fit quality: 2A level, screws the cooperation that rear formation is comparatively loose; The screw-internal thread fit of ball pin and fixture adopts the most general thread tolerance fit quality: 2B level, screws the cooperation that rear formation is comparatively loose; Effectively can ensure that test product answers Impact direction to overlap with the direction of pull of applying when tension test is carried out in frock level placement.
This frock with reference to the architectural feature of domestic and international disconnector, according to the full-size design of the most common current disconnector screw thread, and leaves certain nargin.Fixed head 5 adopts high-strength nickel chrome-molybdenum steel, has good machinery, wear-resistant and anti-fatigue performance.
During experiment, assemble this frock according to the structure of Fig. 1, what the ball pin of upper ball foot lever and lower ball foot lever was separately fixed at puller system is top and bottom, and adjustment is fixed on the nut at coupling bolt 6 two ends, and adjustment frock is to proper height; Then open puller system to carry out loading the tension test that both can complete disconnector.
Claims (8)
1. the universal fixture of disconnector tension test, is characterized in that, comprises two pin ball bars (2), four pieces of fixed heads (5) and four coupling bolts (6); One end of pin ball bar (2) is the ball pin (1) supporting with cupping machine, and the other end is screw rod; Fixed head (5) is furnished with three through holes; Coupling bolt (6) two ends are equipped with external thread; Four pieces of fixed heads (5) from top to bottom be arranged in parallel, are called the first fixed head, the second fixed head, the 3rd fixed head and the 4th fixed head successively; The through hole of the both sides of the first fixed head and the second fixed head is passed by two coupling bolts (6) and is fixed by nut; The through hole of the both sides of the 3rd fixed head and the 4th fixed head is passed by another two coupling bolts (6) and is fixed by nut; The intermediate throughholes of the first fixed head supplies the screw rod of a ball foot lever (2) pass and fixed by nut; The intermediate throughholes of the 4th fixed head supplies the screw rod of another ball foot lever (2) pass and fixed by nut; The ball pin being positioned at the ball foot lever of top is positioned at above the first fixed head; The ball pin being positioned at the ball foot lever of below is positioned at below the 4th fixed head; Detachment device noumenon to be tested (8) is installed between the second fixed head and the 3rd fixed head; The disconnector upper bolt (7) on detachment device noumenon to be tested (8) top through the second fixed head intermediate throughholes and fixed by nut; The intermediate throughholes that the 3rd fixed head is passed from the below of the 3rd fixed head in disconnector lower end coupling bolt (9) is fixedly connected with detachment device noumenon to be tested (8) bottom.
2. the universal fixture of disconnector tension test according to claim 1, is characterized in that, the specification of four pieces of fixed heads (5) is identical, and material is nickel chromium molybdenum steel.
3. the universal fixture of disconnector tension test according to claim 1, is characterized in that, the specification of two pin ball bars (2) is identical, and material is nickel chromium molybdenum steel.
4. the universal fixture of disconnector tension test according to claim 1, is characterized in that, four coupling bolts (6) and the material of nut be fixed on coupling bolt (6) are high strength low-carbon steel.
5. the universal fixture of disconnector tension test according to claim 1, is characterized in that, the screw thread at the upper two ends of coupling bolt (6) is the screw thread of M16.
6. the universal fixture of disconnector tension test according to claim 1, is characterized in that, pin ball bar (2) other end is the screw thread on screw rod is the screw thread of M12.
7. the universal fixture of disconnector tension test according to claim 1, is characterized in that, coupling bolt (6) and be fixed on the nut on coupling bolt (6) thread tolerance coordinate be registered as 2A level; The screw rod of pin ball bar (2) other end coordinates with the thread tolerance of nut and is registered as 2A level.
8. the universal fixture of disconnector tension test according to claim 1, it is characterized in that, the ball pin being arranged in the ball foot lever of top is installed on upper and lower two fixtures of puller system respectively with the ball pin of the ball foot lever being positioned at below, and the thread tolerance fit quality that ball pin and the screw-internal thread fit of corresponding fixture adopt is 2B level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420852039.1U CN204373992U (en) | 2014-12-27 | 2014-12-27 | The universal fixture of disconnector tension test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420852039.1U CN204373992U (en) | 2014-12-27 | 2014-12-27 | The universal fixture of disconnector tension test |
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| Publication Number | Publication Date |
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| CN204373992U true CN204373992U (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420852039.1U Active CN204373992U (en) | 2014-12-27 | 2014-12-27 | The universal fixture of disconnector tension test |
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| CN (1) | CN204373992U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424480A (en) * | 2015-12-16 | 2016-03-23 | 北京建筑材料检验研究院有限公司 | Dovetail-shaped anchoring connecting part testing device and method |
-
2014
- 2014-12-27 CN CN201420852039.1U patent/CN204373992U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424480A (en) * | 2015-12-16 | 2016-03-23 | 北京建筑材料检验研究院有限公司 | Dovetail-shaped anchoring connecting part testing device and method |
| CN105424480B (en) * | 2015-12-16 | 2018-07-10 | 北京建筑材料检验研究院有限公司 | A kind of swallow-tail form anchor connector test device and test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210812 Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. Address before: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Patentee before: CHINA XD ELECTRIC Co.,Ltd. Patentee before: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: Xi'an High Voltage Electrical Apparatus Research Institute Co.,Ltd. Address before: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee before: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. |