CN106653243B - A kind of gland component - Google Patents
A kind of gland component Download PDFInfo
- Publication number
- CN106653243B CN106653243B CN201611039195.6A CN201611039195A CN106653243B CN 106653243 B CN106653243 B CN 106653243B CN 201611039195 A CN201611039195 A CN 201611039195A CN 106653243 B CN106653243 B CN 106653243B
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- CN
- China
- Prior art keywords
- cable
- gland
- hoop
- hold assembly
- tabletting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
- H01B17/58—Tubes, sleeves, beads, or bobbins through which the conductor passes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cable Accessories (AREA)
Abstract
The invention discloses a kind of gland component, including：Equal gland and hoop；The gland includes some equal tablettings；The arc part that tabletting includes hold assembly and is connected with the hold assembly；The hoop is sheathed on the outside of the hold assembly, it is possible to achieve effective fixation to equal gland；Each inner periphery of the tabletting along the hoop is evenly distributed, can be under the maximum electric field of cable space charge measurement, the Electric Field Distribution that is effectively improved near different type end, so as to ensure that cable difference end is not discharged and punctured.The present invention uses the form of piecemeal component, and the quantity of the tabletting can be selected according to cable dimension, and is quickly assembled into the uniformly set to match with cable dimension, is easy to carry.Moreover it is possible to realize that the electric field of cable difference electric field concentration point is pressed, it is used directly in the full-scale space charge measurement of cable, to cable semi-conductive layer end and the pressure of cable both side ends.
Description
Technical field
The present invention relates to power cable detection technique field, more particularly to a kind of gland component.
Background technology
Plastic extruding insulated high voltage direct current cable is one of visual plant in D.C. high voltage transmission, and its safe operation is defeated to high pressure
The stability of power network is most important, and the space charge accumulation problem under DC electric field in extruded polymers insulating materials, always
It is one of crucial problem for limiting plastic extruding insulated high voltage direct current cable popularization and application.Plastic extruding insulated high voltage direct current cable inner space
Electric charge test has three class forms, i.e. cable insulation section test, the test of model cable space charge, the full-scale space electricity of cable
Lotus is tested.Because full-scale space charge measuring technology to high-voltage DC cable insulating without cutting into slices, without for ad hoc type
Number high voltage direct current cable manufactures corresponding model cable, therefore the measuring technology has obvious superiority, can directly detect
Distribution of space charge in actual plastic extruding insulated high-tension cable, the cable insulation state estimation for reality provide foundation.
The full-scale space charge evaluation technology of cable directly can carry out empty to full-scale, heavy insulation extrusion molding high voltage direct current cable
Between electric charge test.During full-scale cable measurement, to improve the pulse intrinsic standoff ratio of half measured zone, it is necessary to strip cable measured zone
Outer semiconducting layer.Need to apply more than tens kilovolts of high voltage because the insulating barrier of actual cable is thicker, during measurement, therefore
During space charge measurement, outer semiconducting layer end will form electric field concentrated area, cause cable exist electric discharge or by
The danger of breakdown, so as to which the normal measurement to space charge impacts.In addition, during full-scale space charge measurement, cable two
The core of side end is directly connected with high direct voltage, easily forms needle point electric discharge.
Pressure-equalizing device is the effective ways for solving such electric field concentration problem, but the plant bulk such as grading ring conventional at present
Structure is excessive, is unfavorable for carrying, and in-site installation is also extremely difficult, it is difficult to directly apply to the full-scale space charge measurement of cable
In cable semi-conductive layer end and cable both side ends pressure.
The content of the invention
The goal of the invention of the present invention is to provide a kind of gland component, to solve in the full-scale space charge measurement of cable
In, existing pressure-equalizing device is difficult to the pressure for being directly used in cable semi-conductive layer end and cable both side ends, and inconvenient to carry, existing
The problem of field installation difficulty.
According to an embodiment of the invention, there is provided a kind of gland component, including：Equal gland and hoop；
The gland includes some equal tablettings；
The arc part that tabletting includes hold assembly and is connected with the hold assembly；
The hoop is sheathed on the outside of the hold assembly；
Each inner periphery of the tabletting along the hoop is evenly distributed.
Preferably, the radius of the arc part circular arc portion is twice of the hold assembly thickness；The curved portions
The axis of part and the hold assembly is set in 60 degree.
Preferably, it is provided with conductive rubber between the adjacent two tablettings.
Preferably, the hold assembly and the arc part are formed in one.
Preferably, the hoop is by the thread double steel wire clips of stainless steel spring.
Preferably, the tabletting is made up of aluminum alloy materials.
From above technical scheme, a kind of gland component provided by the invention, including：Equal gland and hoop；It is described
Equal gland includes some equal tablettings；The arc part that tabletting includes hold assembly and is connected with the hold assembly；
The hoop is sheathed on the outside of the hold assembly, it is possible to achieve effective fixation to the gland；Each equal tabletting
It is evenly distributed along the inner periphery of the hoop, different type can be effectively improved under the maximum electric field of cable space charge measurement
Electric Field Distribution near end, so as to ensure that cable difference end is not discharged and punctured.The present invention is using piecemeal component
Form, can according to cable dimension select it is described tabletting quantity, and be quickly assembled into cable dimension match it is described
Even set, it is easy to carry and installs.Moreover it is possible to realize that the electric field of cable difference electric field concentration point is pressed, electricity is used directly for
In the full-scale space charge measurement of cable, to cable semi-conductive layer end and the pressure of cable both side ends.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is to be preferable to carry out the main view profile of equal gland component that exemplifies according to one；
Fig. 2 is to be preferable to carry out the left view profile of equal gland component that exemplifies according to one；
Fig. 3 is to be preferable to carry out the structural representation of equal tabletting that exemplifies according to one；
Fig. 4 is to be preferable to carry out the structural representation of full-scale coaxial cable that exemplifies according to one；
Fig. 5 is to be preferable to carry out the assembling schematic diagram of equal gland component that exemplifies according to one.
Wherein, the equal glands of 1-, 2- hoops, 3- conductive rubbers, the full-scale coaxial cables of 4-, 5- space charge detection means,
The equal tablettings of 11-, 41- metal cores, semi-conductive layer in 42-, 43- main insulating layers, 44- outer semiconducting layers, 45- metal armor layers,
46- sheaths, 111- hold assemblies, 112- arc parts.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
As Figure 1-5, it is an a kind of preferred embodiment of gland component provided by the invention, including：The equal He of gland 1
Hoop 2.
The gland 1 includes some tablettings 11, can be according to selecting cable dimension using the form of piecemeal component
The quantity of equal tabletting 11, and be quickly assembled into the uniformly set 1 to match with cable dimension, it is easy to carry, installs and component
Be adjusted flexibly.
The arc part 112 that tabletting 11 includes hold assembly 111 and is connected with the hold assembly 111.Its
In, the circumferential outer surface of full-scale coaxial cable 4 is fixed in the tabletting 11 by the hold assembly 111.The arc
Part 112 and the hold assembly 111 are tangent in junction, and point of contact is then semiconductive discontinuities.
The hoop 2 is sheathed on the outside of the hold assembly 111, it is possible to achieve effective fixation to the gland 1,
By the clamping elasticity for adjusting the hoop 2, it is possible to achieve the installation and removal to the gland 1, operation is simple and reliable,
The gland component is set to be easy to carry and install.
Each inner periphery of the tabletting 11 along the hoop 2 is evenly distributed, the hoop 2 is fastened the gland 1,
To ensure that the gland 1 is tightly sleeved with the full-scale coaxial cable 4, and each tabletting 11 is equally along the full chi
The circumferential surface of very little coaxial cable 4 is evenly distributed, can be realized with uniform electric field to cable semi-conductive layer end and cable two side ends
The pressure in portion.
Before the full-scale coaxial cable 4 carries out space charge measurement, it is necessary first to the full-scale coaxial cable 4
Pre-processed.The full-scale coaxial cable 4 includes：Metal core 41, interior semi-conductive layer 42, main insulating layer 43, partly lead outside
Electric layer 44, metal armour layer 45 and sheath 46, to make space charge detection means 5 and the master of the full-scale coaxial cable 4 exhausted
Edge layer 43 is closely connected, it is necessary to first by the metal armour layer 45 near the full-scale measured zone of coaxial cable 4 and institute
State sheath 46 to shed, and divest one section of outer semiconducting layer 8, make the main insulating layer 7 exposed, be easily installed space charge inspection
Survey device 5.
According to the size of full-scale coaxial cable 4, the appropriate number of tabletting 11 is selected；Need what is pressed in cable
Position, each tabletting 11 is by the hold assembly 111, along the outer semiconducting layer of the full-scale coaxial cable 4
44 are uniformly distributed a circle；Now, the arc part 112 of each tabletting 11 is around the full-scale coaxial cable 4 one
In week, the gland 1 is set to form the structure of similar " bouquet ".Then the hoop 2 is sheathed on to the outside of the gland 1,
The gland 1 is anchored on the outer semiconducting layer 44.
Because the gland 1 closely agrees with the outer semiconducting layer 44, therefore both current potentials are identical, described to press
The degree that 1 structures shape is capable of uniform electric field is covered, and the structure of similar " bouquet " of the gland 1 can shroud electric field collection
Middle region, can be under the maximum electric field of cable space charge measurement, the Electric Field Distribution that is effectively improved near different type end, from
And ensureing the 4 different ends of full-scale coaxial cable will not discharge and puncture.
The design parameter of an embodiment provided by the invention is：The full-scale coaxial cable 4 is insulation DC electric cable, is led
Body section product is 1000mm2, the thickness of the main insulating layer 43 is 9mm, the He of metal armour layer 45 shed during pretreatment
The sheath 46, and one section of outer semiconducting layer 44 is divested, the exposed length for making the main insulating layer 43 is 1m, to install
The space charge detection means 5.The gland 1 includes 8 tablettings 11, and electric field concentrated area is nearby provided with two
The gland 1, i.e., the 16 altogether tablettings 11.
Preferably, the radius of the arc part circular arc portion is twice of the hold assembly thickness；The curved portions
The axis of part 112 and the hold assembly 111 is set in 60 degree.The circular parameters of the arc part 112 are according to electric field
Simulation calculation is determined.Above-mentioned circular parameters are taken in the tabletting 11, can not only save material, also make electric fields uniform journey
Du Genggao, the Electric Field Distribution near different type end is can effectively improve, so as to ensure the 4 different ends of full-scale coaxial cable
Portion will not discharge and puncture.
Preferably, it is provided with conductive rubber 3 between the adjacent two tablettings 11.Some tablettings 11 are along described
During even circumferential one circle of arrangement of outer semiconducting layer 44, the outer semiconducting layer 44 may have the portion that can not be completely wrapped
Position.The conductive rubber 3 has good sealing and electromagnetic shielding capability, and can provide good lead under a certain pressure
Electrically, thus using the conductive rubber 3 air gap between the tabletting 11 is filled, to prevent in measurement process, by
Acted in high electric field and cause to discharge between air gap.In addition, the conductive rubber 3 is as a kind of conductive packing material, may be used also
With avoid because it is each it is described non-equipotential between tabletting 11 be present and caused by electric discharge.
At the position that cable needs to press, each tabletting 11 is by the hold assembly 111, along described full-scale same
The outer semiconducting layer 44 of shaft cable 4 is uniformly distributed a circle；The hoop 2 is sheathed on to the outside of the gland 1 again, will
The gland 1 is anchored on the outer semiconducting layer 44；Then filled up with the conductive rubber 3 between each tabletting 11
Air gap, then it is described gland assembling components finish.The diameter of the conductive rubber 3 described slightly larger than adjacent two should be pressed
Interval between piece, the air gap for enabling the conductive rubber 3 to be filled up completely between the tabletting 11 of adjacent two.
Preferably, the hold assembly 111 and the arc part 112 are formed in one, and can make the gland group
Part is easy to carry, mounted and dismounted, and makes preferably transition to connect between the hold assembly 111 and the arc part 112
Connect, be advantageously implemented the pressure to cable semi-conductive layer end and cable both side ends.
Preferably, the hoop 2 is by the thread double steel wire clips of stainless steel spring.Double steel wire clips are with two steel
Silk has the advantages that easy to use, clamping force is strong, good seal performance around clip circlewise.It is made up of stainless steel spring line
Double steel wire clips there is high resiliency, high tenacity and high intensity, it is possible to achieve to it is described gland 1 effective fixation, pass through tune
Saving the clamping elasticity of double steel wire clips, it is possible to achieve the installation and removal to the gland 1, operation is simple and reliable,
The gland component is set to be easy to carry and install.
Alternatively, the hoop 2 is it is also an option that spring hoop.The spring hoop is made using high-quality manganese steel, is had
Larger elasticity and intensity, use and convenient disassembly, tighten up uniformly, can Reusability, and have different-diameter available.This
Outside, hose clamp, ear hoop and omnipotent clip etc. can also be chosen according to the needs of actual use, the hoop 2.
Preferably, the tabletting 11 is made up of aluminum alloy materials.Aluminium alloy is in light weight, and beneficial to carrying, and intensity is high, modeling
Property is good, can be processed into variously-shaped, has excellent electric conductivity, thermal conductivity and corrosion stability.It is described made of aluminium alloy to press
Piece 11 can be with uniform electric field, the Electric Field Distribution that is effectively improved near different type end, so as to ensure the full-scale coaxial electrical
4 different ends of cable will not discharge and puncture.
From above technical scheme, a kind of gland component provided by the invention, including：Equal gland 1 and hoop 2；Institute
Stating equal gland 1 includes some tablettings 11；The tabletting 11 includes hold assembly 111 and is connected with the hold assembly 111
The arc part 112 connect；The hoop 2 is sheathed on the outside of the hold assembly 111, it is possible to achieve to the gland 1
It is effectively fixed；Each inner periphery of the tabletting 11 along the hoop 2 is evenly distributed, can be in the highest of cable space charge measurement
Under electric field, the Electric Field Distribution that is effectively improved near different type end, so as to ensure that cable difference end is not discharged and hit
Wear.The present invention uses the form of piecemeal component, and the quantity of the tabletting 11 can be selected according to cable dimension, and is quickly assembled into
The uniformly set 1 to match with cable dimension, is easy to carry and installs.Moreover it is possible to realize cable difference electric field concentration point
Electric field press, be used directly in the full-scale space charge measurement of cable, to cable semi-conductive layer end and cable both sides
The pressure of end.
Those skilled in the art will readily occur to the present invention its after considering specification and putting into practice invention disclosed herein
Its embodiment.The application be intended to the present invention any modification, purposes or adaptations, these modifications, purposes or
Person's adaptations follow the general principle of the present invention and including undocumented common knowledges in the art of the invention
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be appreciated that the invention is not limited in the precision architecture for being described above and being shown in the drawings, and
And various modifications and changes can be being carried out without departing from the scope.The scope of the present invention is only limited by appended claim.
Claims (5)
- A kind of 1. gland component, it is characterised in that including：Equal gland (1) and hoop (2)；The gland (1) includes some tablettings (11)；The arc part that tabletting (11) includes hold assembly (111) and is connected with the hold assembly (111) (112)；The hoop (2) is sheathed on the outside of the hold assembly (111)；Each inner periphery of the tabletting (11) along the hoop (2) is evenly distributed；The radius of arc part (112) circular arc portion is twice of the hold assembly (111) thickness；The arc part (112) and the axis of the hold assembly (111) are set in 60 degree.
- 2. gland component according to claim 1, it is characterised in that set between two adjacent tablettings (11) There is conductive rubber (3).
- 3. gland component according to claim 1, it is characterised in that the hold assembly (111) and the curved portions Part (112) is formed in one.
- 4. gland component according to claim 1, it is characterised in that the hoop (2) is by stainless steel spring line system Into double steel wire clips.
- 5. gland component according to claim 2, it is characterised in that the tabletting (11) is by aluminum alloy materials system Into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039195.6A CN106653243B (en) | 2016-11-21 | 2016-11-21 | A kind of gland component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039195.6A CN106653243B (en) | 2016-11-21 | 2016-11-21 | A kind of gland component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106653243A CN106653243A (en) | 2017-05-10 |
| CN106653243B true CN106653243B (en) | 2018-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611039195.6A Active CN106653243B (en) | 2016-11-21 | 2016-11-21 | A kind of gland component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106653243B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100212A (en) * | 1987-01-16 | 1988-07-27 | 中国科学院上海光学精密机械研究所 | Burstproof lamp socket |
| CN203858329U (en) * | 2014-04-02 | 2014-10-01 | 上海华普电缆有限公司 | Stress ring for partial discharge tests and high-voltage insulation tests on 35kV or lower power cable |
| CN203858328U (en) * | 2014-04-02 | 2014-10-01 | 上海华普电缆有限公司 | Terminal for testing partial discharge of 10KV or lower crosslinked polyethylene power cable |
| CN204118673U (en) * | 2014-09-26 | 2015-01-21 | 固力发集团有限公司 | A kind of electric cable fitting terminal |
| CN105259440A (en) * | 2015-10-21 | 2016-01-20 | 中国电力科学研究院 | DC cable test terminal |
| CN205178461U (en) * | 2015-08-31 | 2016-04-20 | 国网智能电网研究院 | DC cable connects |
| CN205377244U (en) * | 2015-11-04 | 2016-07-06 | 长园电力技术有限公司 | A stress cone for high voltage dc cable annex |
-
2016
- 2016-11-21 CN CN201611039195.6A patent/CN106653243B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100212A (en) * | 1987-01-16 | 1988-07-27 | 中国科学院上海光学精密机械研究所 | Burstproof lamp socket |
| CN203858329U (en) * | 2014-04-02 | 2014-10-01 | 上海华普电缆有限公司 | Stress ring for partial discharge tests and high-voltage insulation tests on 35kV or lower power cable |
| CN203858328U (en) * | 2014-04-02 | 2014-10-01 | 上海华普电缆有限公司 | Terminal for testing partial discharge of 10KV or lower crosslinked polyethylene power cable |
| CN204118673U (en) * | 2014-09-26 | 2015-01-21 | 固力发集团有限公司 | A kind of electric cable fitting terminal |
| CN205178461U (en) * | 2015-08-31 | 2016-04-20 | 国网智能电网研究院 | DC cable connects |
| CN105259440A (en) * | 2015-10-21 | 2016-01-20 | 中国电力科学研究院 | DC cable test terminal |
| CN205377244U (en) * | 2015-11-04 | 2016-07-06 | 长园电力技术有限公司 | A stress cone for high voltage dc cable annex |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106653243A (en) | 2017-05-10 |
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