CN209117796U - A kind of cable intermediate joint electric performance test tooling - Google Patents
A kind of cable intermediate joint electric performance test tooling Download PDFInfo
- Publication number
- CN209117796U CN209117796U CN201821742172.6U CN201821742172U CN209117796U CN 209117796 U CN209117796 U CN 209117796U CN 201821742172 U CN201821742172 U CN 201821742172U CN 209117796 U CN209117796 U CN 209117796U
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- intermediate joint
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- 238000011056 performance test Methods 0.000 title claims abstract description 17
- 238000003780 insertion Methods 0.000 claims description 24
- 230000037431 insertion Effects 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- 230000007704 transition Effects 0.000 abstract description 46
- 238000012360 testing method Methods 0.000 abstract description 19
- 230000007547 defect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 4
- 238000003892 spreading Methods 0.000 description 4
- 230000007480 spreading Effects 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000008119 colloidal silica Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Cable Accessories (AREA)
Abstract
The utility model discloses a kind of cable intermediate joint electric performance test toolings, belong to test fixture field comprising prod offers the via hole being connected to its both ends in the prod, the contact tube with its deep equality is provided in the via hole；One end of the prod is equipped with conductive cap, air gap is formed between the conductive cap and prod, the contact tube is abutted with conductive cap.The utility model have can dummycable wiring when transition joint working condition, accurately measure transition joint with the presence or absence of mass defect, while the plug with transition joint can also be facilitated, it is no longer necessary to the effect cleared up transition joint inner wall.
Description
Technical field
The utility model relates to the technical field of test fixture, in particular to a kind of cable intermediate joint electric performance test
Use tooling.
Background technique
In power cable transmission line of electricity laid processes, since power cable factory length is limited, need to be by cable among
Connector connection, the main function of cable intermediate joint is to maintain that cable seal, route are unobstructed, and guarantees the insulation at cable connector
Grade runs it safely and reliably.Therefore cable intermediate joint is the important component of electric cable fitting, but simultaneously
It is the multiple position of transmission line of electricity, electric property directly affects the safety of power supply system.
Compared to cable body, cable intermediate joint is multi-layer solid composite dielectric structure, and inside exists compound section a large amount of
Face generates insulation weak-point since the defect that product quality problem generates be easy to cause electric field to concentrate.In this regard, in process of production
It need to reinforce the intermediate detection control of semi-manufactured goods quality, and need to carry out it relevant voltage-withstand test and partial discharge test before factory,
Effectively find the product of existing defects.
Individual cable intermediate joint can not directly carry out electric property once accessing high pressure breakdown at once will burn
Test.Therefore in the prior art, when carrying out electric performance test to it, as shown in Figure of description 3, erecting bed need to be simulated,
By the cable 9 of two 1m or so, and its end peels off to 15cm or so is rear to be inserted into respectively in transition joint 7, transition joint 7
73 central integration of insulation colloidal silica have an interior electrode 71 made of carbon black, insulating layer 91 is equipped on the outside of cable core 92, is peeled off
Cable core 91 between be arranged with the connecting tube 10 being bonded with interior electrode 71, connecting tube 10 realizes two cable cores after Press Plier crimps
Connection between 91.Also integrally formed with stress cone 72 in the end of transition joint 7, stress cone 72 can make with interior electrode 71
The field strength distribution for obtaining transition joint 7 is uniform, is not easy that partial discharge phenomenon occurs because electric field is concentrated.
Since transition joint is made of silica gel, the material is soft, and the stroke that cable end need to be inserted into is longer, was testing
The plug of cable and transition joint is difficult to realize in journey.To solve this problem, conventional way is using lubricants such as silicone grease
It is lubricated, but artificial remain using lubricant of the alcohol equal solvent to transition joint inner wall is needed to add after testing again
Pressure wiping, it is not only time-consuming and laborious, and be very easy to that the carbon black on interior electrode is caused to fall off because of friction, and be adhered to cable conductor
On the insulating layer in outside, eventually leads to entire transition joint and be easy to be broken down by high-voltage.
Utility model content
The purpose of this utility model is to provide a kind of cable intermediate joint electric performance test tooling, have it is convenient with
The plug of transition joint connects, and the effect for no longer needing to clear up transition joint inner wall.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of cable intermediate joint electric performance test tooling, including prod, offer in the prod and its
The via hole of both ends connection, the contact tube with its deep equality is provided in the via hole；
One end of the prod is equipped with conductive cap, and air gap, the conduction are formed between the conductive cap and prod
Pipe is abutted with conductive cap.
By using above-mentioned technical proposal, using test fixture can dummycable wiring when transition joint field distribution
Situation carries out electric performance test to transition joint again at this time, so as to accurately judge transition joint with the presence or absence of quality
Defect.When test fixture is inserted into the both ends of transition joint, compressed air can be input to by contact tube and air gap
Between in connector, can be by compressed air slightly spreading, so as to facilitate test fixture in since the material is soft for transition joint
Between connector plug, while the problem of will not generate pollution to transition joint inner sidewall, avoid the cleaning treatment in later period with
And reduce the possibility that carbon black is fallen.
The utility model is further arranged to: the prod includes integrally formed gripping section and is embedded in section, described embedding
The outer diameter for entering section is less than the internal diameter of gripping section, and the insertion section and the junction of gripping section are formed with positioning step.
By using above-mentioned technical proposal, positioning step can limit the depth that prod is embedded in inside transition joint,
And play the role of prompt simultaneously.
The utility model is further arranged to: one end side wall of insertion section towards the gripping section is surrounded with one end and prolongs
The metal screen layer in gripping section is extended to, the sidewall thread of the gripping section is connected with the ground connection that one end is abutted with metal screen layer
Bolt.
By using above-mentioned technical proposal, metal screen layer, by capacitance current, contact tube is powered when operating normally
When generate it is electromagnetic-field-shielded in prod, with reduce to the external world generate electromagnetic interference；When short circuit occurs for detection system, connect
Ground bolt abuts, and can be used as the channel of short circuit current and safely introduces earthed system, to protect detection system to be safely operated.
The utility model is further arranged to: the side wall of the gripping section is surrounded with mounting flange, and the installation is convex
Threaded hole is offered on edge.
By using above-mentioned technical proposal, mounting flange, which can facilitate, is fixedly installed in a certain mounting rack for entire prod
On, push-and-pull operation directly can be carried out to prod after Mobile mounting rack, it is very convenient.
The utility model is further arranged to: the prod and mounting flange are made of epoxide resin material.
By using above-mentioned technical proposal, epoxide resin material enables to prod to have certain elasticity, thus full
Its interference of foot is embedded in the requirement in cable intermediate joint, so that prod is close to the inner sidewall of transition joint, so that two
Air gap will not be generated between person and electric field is caused to be concentrated, and cause shelf depreciation and cause transition joint that Fault of Insulating Breakdown occurs.
Epoxy resin has preferable machinability and voltage endurance capability simultaneously, can satisfy and tests required pouring for a long time
And recoverable force requirement.Furthermore epoxy resin is as insulating materials, additionally it is possible to guarantee the reliability of transition joint test.
The utility model is further arranged to: the contact tube and conductive cap are made of copper product.
By using above-mentioned technical proposal, copper have good mechanical performance, processing performance, chemical stability and compared with
High conductivity, while its is resourceful, is relatively easy to obtain.
The utility model is further arranged to: the gripping section is provided with far from one end of insertion section and is connected to contact tube
Electric interfaces slot.
By using above-mentioned technical proposal, tracheae can either be connected, compressed air is discharged from air gap using via hole, simultaneously
Again installation space can be provided for connection high-tension bus-bar.
In conclusion the utility model has the following beneficial effects:
1. by the setting of prod, conductive cap and contact tube, can situation of dummycable when being connect with transition joint,
Transition joint can be accurately measured with the presence or absence of mass defect to realize, while utilizing contact tube, first through hole, the second through-hole
Compressed air is discharged from air gap, so that prod is more smooth during being inserted into transition joint, is avoided in the later period
Between inner nosepiece wall cleaning treatment problem and the possibility that falls of carbon black；
2. by the setting of metal screen layer, can either screening conductive pipe be powered caused by electromagnetic field, while again can be
Detection system occurs to be grounded when short circuit, plays a protective role；
3. prod interference can be guided to be embedded in transition joint by the setting of tapered portion.
Detailed description of the invention
Fig. 1 is in the utility model embodiment for embodying whole structural schematic diagram；
Fig. 2 is the portion the A enlarged drawing in Fig. 1, is shown for embodying the positional relationship between first through hole, the second through-hole and air gap
It is intended to；
Fig. 3 is in the prior art for embodying structural schematic diagram when cable is connect with transition joint.
In figure, 1, prod；11, gripping section；111, electric interfaces slot；112, mounting flange；1121, threaded hole；12, embedding
Enter section；121, mounting groove；13, via hole；14, positioning step；2, conductive cap；21, interconnecting piece；211, first through hole；212, second
Through-hole；22, tapered portion；3, metal screen layer；4, contact tube；5, air gap；6, conductive insert；7, transition joint；71, interior electrode；
72, stress cone；73, insulate colloidal silica；8, earth stud；9, cable；91, insulating layer；92, cable core；10, connecting tube.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment: as shown in Figure 1, being a kind of cable intermediate joint electric performance test recruitment disclosed by the utility model
Dress, including prod 1 and conductive cap 2.Prod 1 is made of epoxide resin material, including integrally formed 12 He of insertion section
Gripping section 11, the internal diameter of gripping section 11 are greater than the outer diameter of insertion section 12, so that being formed with positioning step 14 therebetween.It is surveying
Along its length through offering via hole 13 in coupon 1, it is provided in via hole 13 with its deep equality and inner hollow is led
Fulgurite 4, conductive cap 2, contact tube 4 in the present embodiment are all made of copper product and are made.When use need to will insertion section 12 be inserted into
Inside the transition joint 7 of detection, mounting flange 112, the process that prod 1 is inserted into also are surrounded in the side wall of gripping section 11
It being pushed using cylinder (not shown), mounting rack can be fixedly connected on the piston rod of cylinder, prod 1 passes through mounting rack,
And through threaded hole 1121 is opened up on mounting flange 112, entire prod 1 is fixed using the screw across threaded hole 1121
In on mounting rack, stop pushing when prod 1 moves to the port conflict of positioning step 14 and transition joint 7.
As shown in Figure 1, offering mounting groove 121, bonding in mounting groove 121 far from one end of gripping section 11 in insertion section 12
It is provided with the conductive insert 6 abutted with contact tube 4.Conductive cap 2 includes integrally formed column interconnecting piece 21 and tapered portion 22, is led
The inner sidewall of electric insert 6 is provided with internal screw thread, and interconnecting piece 21 passes through and conductive insert 6 is threadedly coupled to realize itself and entire test
It is detachable between stick 1.When interconnecting piece 21, which screws in, extremely to abut with the bottom of conductive insert 6, between tapered portion 22 and insertion section 12
It is formed with the air gap 5 of 3mm-5mm.Conductive insert 6 in the present embodiment is made of copper product, and reason is copper and epoxy resin
There is more reliable caking property between material, it can be convenient for the installation of conductive insert 6.
As illustrated in fig. 1 and 2, the first through hole 211 being connected to via hole 13 is offered along its length in interconnecting piece 21,
Run through on its side wall simultaneously and offers the second through-hole 212 being connected to first through hole 211, the outlet position of the second through-hole 212
It is right against at the air gap 5 between insertion section 12 and tapered portion 22.It is provided with and leads far from one end of insertion section 12 in gripping section 11
The electric interfaces slot 111 that fulgurite 4 is connected to, equally fitting is provided with the conductive insert abutted with contact tube 4 in electric interfaces slot 111
6, the inner sidewall of conductive insert 6 is provided with internal screw thread.When needing to carry out transition joint 7 voltage-withstand test and partial discharge is tested, need
Insertion section 12 is inserted into transition joint 7, electric interfaces slot 111 can be threaded connection with the tracheae with air nozzle connector (in figure
It is not shown), intratracheally convey compressed air.Since air gap 5 is set to insertion 12 insertion end end of section, compressed air is by leading
Fulgurite 4, first through hole 211, the second through-hole 212 are discharged from air gap 5, so that the slight spreading in the inner cavity of transition joint 7, and
By the guidance of tapered portion 22, to facilitate insertion section 12 to be inserted into.Conduction is carried out using conductive insert 6 later, contact tube 4 is inputted
The high pressure of 10kV-30kV recycles conductive cap 2 and interior electrode 71 to carry out conduction, realizes the resistance test to transition joint 7 and office
Put detection.
As shown in Figure 1, being surrounded with one end in one end side wall for being embedded in section 12 towards gripping section 11 extends to gripping section
Metal screen layer 3 in 11, the metal screen layer 3 are equally made of copper product.One is connected in the sidewall thread of gripping section 11
The earth stud 8 abutted with metal screen layer 3 is held, earth stud 8 is grounded always.Metal screen layer 3 is normally examined in transition joint 7
It by capacitance current when survey, generates electromagnetic-field-shielded in prod 1 when contact tube 4 is powered, the external world is generated with reducing
Electromagnetic interference；When short circuit occurs for detection system, it can be used as the channel of short circuit current and safely introduce earthed system, with protection
Detection system safe operation.
The implementation principle of above-described embodiment are as follows: transition joint 7 is clamped and fixed, keeps horizontal, prod 1 is installed on
Can be on two mounting racks of Relative sliding, and the insertion section 12 of prod 1 is inserted into the two of transition joint 7 simultaneously using cylinder
End, using tracheae constantly to being passed through compressed air in contact tube 4 during insertion.Since meeting is temporary inside transition joint 7
When form a closed space, can be by the slight spreading in its inner cavity, to facilitate the insertion of insertion section 12 using compressed air.
Stop inflation after positioning step 14 is abutted with the port of transition joint 7, by the extra compression in 7 inside of transition joint
Air discharge, so that its internal air pressure and atmospheric pressure keep balancing.And then contact tube 4 is inputted using high-pressure generation equipment
The high pressure of 10kV-30kV, at this time conductive cap 2, be connected on interior electrode 71, when being inserted into transition joint 7 with dummycable 9 in
Between field distribution situation inside connector 7, and voltage-withstand test is carried out to contact tube 4 and partial discharge is tested, can be quasi- according to test result
Really judge the transition joint 7 with the presence or absence of mass defect.During the test, it can connect and be grounded in the sidewall thread of gripping section 11
Bolt 31, earth stud 31 are connected and are grounded with metal screen layer 3, to protect entire detection system not generate peace because of short circuit
Full accident.
Wherein, electric interfaces slot 111 can be not only used for input compressed air, while can realize contact tube 4 and high-tension bus-bar again
The function of connection, specific implementation can are as follows: are threadedly coupled the air nozzle connector of tracheae with conductive insert 6, connect in gas nozzle
It is bonded setting metal gasket between head and conductive insert 6, then metal gasket is connect with high-tension bus-bar.
Test completes recession and removes voltage, and contact tube 4 is grounded, and again to being inflated in contact tube 4, so that transition joint
7 inner cavity spreadings.Using cylinder action, first successively extract two prods 1 out 70%-80%, then by two prods 1 all from
It is detached simultaneously at the port of transition joint 7.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (8)
1. a kind of cable intermediate joint electric performance test tooling, it is characterised in that: including prod (1), the prod
(1) via hole (13) being connected to its both ends is offered in, is provided with and its deep equality and inner hollow in the via hole (13)
Contact tube (4)；
One end of the prod (1) is equipped with conductive cap (2), is formed with air gap between the conductive cap (2) and prod (1)
(5), the contact tube (4) is connected with conductive cap (2).
2. a kind of cable intermediate joint electric performance test tooling according to claim 1, it is characterised in that: the survey
Coupon (1) includes integrally formed gripping section (11) and insertion section (12), and the outer diameter of insertion section (12) is less than gripping section
(11) internal diameter, insertion section (12) and the junction of gripping section (11) are formed with positioning step (14).
3. a kind of cable intermediate joint electric performance test tooling according to claim 2, it is characterised in that: described to lead
Electric cap (2) includes integrally formed interconnecting piece (21) and tapered portion (22), insertion section (12) far from gripping section (11) one
End offers mounting groove (121), and fitting is provided with conductive insert (6) in the mounting groove (121), the interconnecting piece (21) with lead
Electric insert (6) is threadedly coupled；
The first through hole (211) being connected to via hole (13), the connection are offered along its length in the interconnecting piece (21)
The side wall in portion (21) through offering the second through-hole (212) being connected to first through hole (211), second through-hole (212) and
Air gap (5) connection.
4. a kind of cable intermediate joint electric performance test tooling according to claim 2, it is characterised in that: described embedding
One end side wall for entering section (12) towards gripping section (11) is surrounded with the metal screen layer that one end extends in gripping section (11)
(3), the sidewall thread of the gripping section (11) is connected with the earth stud (31) that one end is abutted with metal screen layer (3).
5. a kind of cable intermediate joint electric performance test tooling according to claim 2, it is characterised in that: the folder
The side wall for holding section (11) is surrounded with mounting flange (112), offers threaded hole (1121) on the mounting flange (112).
6. a kind of cable intermediate joint electric performance test tooling according to claim 2, it is characterised in that: the survey
Coupon (1) is made with mounting flange (112) of epoxide resin material.
7. a kind of cable intermediate joint electric performance test tooling according to claim 2, it is characterised in that: described to lead
Electric cap (2) includes integrally formed interconnecting piece (21) and tapered portion (22), insertion section (12) far from gripping section (11) one
End offers mounting groove (121), and fitting is provided with conductive insert (6) in the mounting groove (121), the interconnecting piece (21) with lead
Electric insert (6) is threadedly coupled；
The first through hole (211) being connected to via hole (13), the connection are offered along its length in the interconnecting piece (21)
The side wall in portion (21) through offering the second through-hole (212) being connected to first through hole (211), second through-hole (212) and
Air gap (5) connection.
8. a kind of cable intermediate joint electric performance test tooling according to claim 2, it is characterised in that: the folder
It holds section (11) and one end of insertion section (12) is provided with the electric interfaces slot (111) being connected to contact tube (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821742172.6U CN209117796U (en) | 2018-10-25 | 2018-10-25 | A kind of cable intermediate joint electric performance test tooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821742172.6U CN209117796U (en) | 2018-10-25 | 2018-10-25 | A kind of cable intermediate joint electric performance test tooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209117796U true CN209117796U (en) | 2019-07-16 |
Family
ID=67202297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821742172.6U Active CN209117796U (en) | 2018-10-25 | 2018-10-25 | A kind of cable intermediate joint electric performance test tooling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209117796U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110007179A (en) * | 2018-10-25 | 2019-07-12 | 童志勇 | A kind of cable intermediate joint electric performance test tooling and method |
| CN112748311A (en) * | 2020-12-07 | 2021-05-04 | 河南平高电气股份有限公司 | GIS on-site voltage withstand testing device and voltage withstand conductor assembly thereof |
-
2018
- 2018-10-25 CN CN201821742172.6U patent/CN209117796U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110007179A (en) * | 2018-10-25 | 2019-07-12 | 童志勇 | A kind of cable intermediate joint electric performance test tooling and method |
| CN110007179B (en) * | 2018-10-25 | 2021-04-30 | 童志勇 | Cable intermediate joint electrical performance testing tool and method |
| CN112748311A (en) * | 2020-12-07 | 2021-05-04 | 河南平高电气股份有限公司 | GIS on-site voltage withstand testing device and voltage withstand conductor assembly thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220112 Address after: 315100 Yun Long Zhen He Hua Qiao Cun, Yinzhou District, Ningbo City, Zhejiang Province Patentee after: Ningbo dongzhijie Power Technology Co.,Ltd. Address before: 311300 Room 302, building 8, Jinnan new village, Jincheng Street, Lin'an City, Hangzhou City, Zhejiang Province Patentee before: Tong Zhiyong |