EP3577735A1 - Device for receiving stabilization means of a surge arrester, assembly, and production method - Google Patents
Device for receiving stabilization means of a surge arrester, assembly, and production methodInfo
- Publication number
- EP3577735A1 EP3577735A1 EP18716921.4A EP18716921A EP3577735A1 EP 3577735 A1 EP3577735 A1 EP 3577735A1 EP 18716921 A EP18716921 A EP 18716921A EP 3577735 A1 EP3577735 A1 EP 3577735A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- stabilizing
- cage
- channels
- cages
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T4/00—Overvoltage arresters using spark gaps
- H01T4/06—Mounting arrangements for a plurality of overvoltage arresters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
- H01C7/123—Arrangements for improving potential distribution
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/14—Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure
Definitions
- Surge arresters are used in medium- and high-voltage engineering in order to discharge overvoltages, for example on overhead lines, to the earth in a controlled manner. For example, Kings ⁇ nen such surges, the voltages substantially above the nominal voltages of are to be protected electrical equipment, caused by lightning strikes or short circuits. usual
- Surge arresters have electrical resistances, so-called varistors, which are below a predetermined value
- Threshold voltage are hardly electrically conductive, when exceeding the overvoltage but are very good electrically conductive.
- the resistors are usually provided as slices of metal oxide semiconductor material, which are stacked to a Ab ⁇ control column one above the other.
- the Wider ⁇ slices always have a large contact surface to each other for the derivation of corresponding currents, the Ableit yarn is compressed. This can be done for example by means of ei ⁇ ner construction of two end fittings, between which the Ableit yarn is arranged with resistance discs.
- the compression is achieved by setting stabilizing means under tension in the end fittings.
- the object of the invention is to provide a device which can be used comparatively easily and quickly for mounting an overvoltage arrester.
- the invention solves this problem by a device according to claim 1.
- a rod according to the invention is a substantially cylindrically shaped body, thus consequently has a circular cross-section.
- the channels should also be provided substantially cylindrically, ie with a circular cross-section, at least in partial regions. This coordination of the cross sections of channels and stabilizing means on one another ensures a good clamping action when setting the stabilizing means in the channels. If a stabilizing agent has a different cross-section, e.g. an oval or a square cross-section, so in a complementary configuration of the channels also a good clamping effect can be achieved.
- the material for the device for example, an electrically non-conductive plastic can be used, where ⁇ produced in the device by an injection molding process becomes. This is inexpensive and easy.
- the device can also be produced by means of an additive manufacturing method by means of a so-called 3D printer.
- the first slot should each be sufficiently large that a stabilizer can be "clipped" into a channel by a fitter with little effort.
- the device comprises channels, which can even accommodate two stabilizing agents, the mounting ei ⁇ nes cage is greatly facilitated.
- Previous devices could define only one single stabilizer in their recesses, as they were not enough out ⁇ leads long, define two stabilizer.
- Inven- tion according shorter stabilizer can now be ⁇ continues to assemble a surge.
- an assembly aid in the form of a cage can be constructed stepwise by means of the device according to the invention with comparatively short stabilizing means stacked one above the other.
- shorter stabilizers makes the manufacture of a surge arrester easier and faster because e.g. shorter rods are easier to handle.
- a cage is fixed with the device according to the invention in an insulator tube, which improves the mechanical stability and allows compression of the resist ⁇ states by means of end fittings.
- each channel is at least twice as long ⁇ be formed as a diameter of the stabilizing agent.
- the channels each have two Kanalbe ⁇ rich, of which a first channel region extends to a first end of the respective channel and a second channel region to a second end of the respective channel, wherein the first channel region to the widened towards the first end of the channel to facilitate insertion of a stabilizing means in the longitudinal direction.
- the second channel region has at least on a part of its respective length a cross-section which is suitable for fixing a stabilizing means with a clamping seat.
- the two channel regions abut each other and together occupy the entire length of the channel.
- the device is formed substantially annularly with a central opening and the first slots are each aligned with the opening, so that a stabilizing agent in the opening and laterally in the respective channel is insertable.
- the device is designed such that upon introduction of the stabilizing means into the channels a substantially disc-shaped inner contour for receiving electrical resistance discs can be formed. This is an advantage because in this way a particularly good guidance for the resistors can be formed.
- the device is designed such that upon introduction of the stabilizing means into the channels an inner contour can be formed which is complementary to an outer contour of electrical resistances.
- the device has clamping sleeves each with a channel for a stabilizing means, wherein the clamping sleeves are arranged perpendicular to the ring and each have a first slot, and wherein in each case a second slot is provided in the channel, which extends outwardly from the center of the device.
- the invention achieves this object by a device according to claim 10.
- the arrangement according to the invention has several advantages.
- egg ⁇ nen can be used with comparatively short stabilizing agents, which is easier to handle.
- the arrangement can be mounted particularly easily by machine, because the second cage can be attached to the pre-assembled first cage by machine.
- the invention is based on the invention
- Task to provide a manufacturing method that comparatively easy and fast to install a
- Surge arrester can be used.
- the invention solves this problem by a manufacturing method according to claim 11.
- Advantageous in this manufacturing ⁇ treatment method is that initially the two cages can be pre ⁇ assembled, and then a simple assembly in the longitudinal direction a mounting cage full length for receiving a Ableit yarn be provided can.
- a stabilizing pin is introduced into the first cage, which has a length which corresponds substantially to the length of a juxtaposition of the first and the second cage, and it is on the first cage with the stabilizing pin of the second cage plugged so that the stabilization pin substantially passes through both cages.
- the use of the stabilizing bolts is advantageous because, in particular, a cage of, for example, two preassembled cages can be mounted during manufacture, without any transverse loading during assembly leading to slipping-out of the assembled cages. Accordingly, the stabilization ⁇ bolt is an assembly aid.
- the first and two ⁇ te cage are set in an insulator. This is an advantage because it determines the devices with the stabilizers from the outside, so that kinking or breaking apart is no longer possible. If a stabilizing bolt was previously used, the stabilizing bolt and the insulator have stabilizing elements inside and outside that mechanically stabilize the cage construction.
- the stabilization is ⁇ bolt out of the cages are stacked successively withdrawn and elec- generic resistors in the cages.
- FIG 1 shows an embodiment of the invention
- Figure 3 shows a first cage of devices and stabilizers
- FIG. 4 shows cross sections through the first cage according Fi gur ⁇ 3, wherein the cross sections are respectively illustrated in Be ⁇ area of the devices, and
- Figure 5 is a composite cage of the first
- Figure 6 shows a cross section through the second cage
- the device 1 shows a device 1.
- the device 1 is substantially annular 12, 13, 14, 15, 16, 17, 18, 19 with a central opening 99 is formed.
- the ring has four widened portions 12, 13, 14, 15 and intermediate connecting webs 16, 17, 18, 19.
- the ring has a diameter 10 which is comparatively small compared to the length and width.
- On the ring are substantially perpendicular four clamping sleeves 2 - 5 arranged, wherein the clamping sleeves ⁇ 2, 3, 4, 5 each having a widened portion 12, 13, 14, are assigned to 15th
- Each collet has a height 11 which is substantially greater than the thickness 10 of the ring.
- Each clamping sleeve 2, 3, 4, 5 has a channel 6, 7, 8, 9 with a first slot 91, 92, 93, 94 for insertion of stabilizing agents.
- the stabilizing means for example, rod-shaped be ⁇ out and are determined by insertion into the opening 99 and moving from the inside out, ie by lateral insertion through the slots 91-94 in the channels 6-9.
- the clamping sleeves and channels 6, 7, 8, 9 are such that, even when stabilizing means are inserted into the channels 6 to 9, a substantially round, disk-shaped region for the opening 99 is formed. This disk-shaped area later serves to accommodate a rejection column with many resistance discs.
- Each clamping sleeve 2-5 also has a second slot 101, 102, 103, 104 which is designed as an undercut and which is located in an extension part of the respective clamping sleeve which extends outward in the widened region from the opening 99.
- the second slot 101-104 is the per ⁇ schreib collet 2-4 formality an additional mechanical flexi- to allow in cooperation with the first slot 91-94 in each case a slight "one-click" of the stabilizing agent in the channels.
- the illustrated device can be made for example of an electrically non-conductive plastic in an injection molding process. Due to the design by means of ring and clamping sleeves is a particularly material-saving, yet mechanically extremely stable in the region of the ring construction realized. By means of the clamping sleeves, in turn, sufficient flexibility is provided to fix stabilizing means in the channels with little force.
- FIG. 2 shows the device according to FIG. 1 in one
- the clamping sleeve 3 is cut along the second slot 102 such that the interior of the channel 8 is visible.
- the clamping sleeve 3 is shown in the range of the Spread ⁇ shouldered region 14 of the ring, the dissemination shouldered region 14 passes behind the ferrule 3 in the web 18th
- the widened section 14 is not massively out ⁇ leads, but 23 as a flat disc with a kinked downwards exterior walls This results in a recess 25.
- This construction with recess 25 for the widened area 14 more material saves even one and represents yet a high mechanical strength of the ring in the region of the widened region 14 is available.
- the clamping sleeve has an overall height, which results in this cross section from the sum of an upper sleeve portion with height 11 and the diameter of the widened portion 10.
- the channel has a first channel region 23 and a second channel region 24.
- the first channel region 23 extends to a first end 26 of the channel and thus of the clamping device 3.
- the first channel region 23 widened towards the first end 26 towards out, so that there is a frusto-conical recess.
- the Publ ⁇ voltage of the channel 8 at the first end 26 is greater than at the second end 27, thereby a stabilizing agent, such as a Sta ⁇ bil confusesstange (not shown), for example, more easily into the first end 26 and thus in the first region 23 of Coming up, ie in the longitudinal direction of the channel, can be inserted. Due to the widened entrance of the channel at the first end 26, a facilitated threading in Ver ⁇ equal to the cylindrical second end 27 is thus possible. Examples play, the diameter of the second region 24 may be selected such that it is slightly smaller than the ser diam ⁇ a stabilizing agent such as a stabilizing rod.
- a stabilizing agent such as a stabilizing rod.
- a stabilizing rod hands before ⁇ as can be achieved by inserting through the first channel region 23 in the second channel region 24 that both stabilizing agents abut one another in a contact region within the second channel region and thus in the longitudinal are designed as well as in the transverse direction.
- the clamping sleeve 3 has a stabilizing web 28 which is provided in each case on both sides of the first slot 93 coming from the opening 99 according to FIG.
- the web 28 stabilizes the first slot and the clamping sleeve so that during the lateral insertion of a stabilization means ⁇ approximately through the first slot into the second channel section 24 via a snap-back, the stabilizing agent and thus a setting is easily possible.
- On the first En- de of the channel 26 of the channel is open by a narrow wall 29 forms ⁇ .
- the second slot 102 is cut in the figure ⁇ 2 ge such that half of the U-shaped basic shape of the designed as undercut second slot is shown.
- the clamping sleeve 3 has a side wall 30 and an arc portion 31, so that in the overall view, a U-shaped clamping sleeve portion is formed, which includes the second slot 102.
- the first region 23 has a height 21 in this example and the second channel region 24 has a height 22, wherein the thickness 10 of the ring is to be added.
- the height ratios of the two channel regions 23, 24 can be formed such that the first channel region 23 makes up about 1/3 of the total height of the clamping device.
- FIG. 3 shows a first cage 70, which has three devices 1, 51, 52. In the channels of the three devices four stabilizers 41-44 are inserted and fixed by clamping action.
- the stabilizing means 41, 42, 43, 44 may be, for example, GRP rods.
- the Stabili ⁇ s istsstoff have been applied to the assembly of the cage 70 in such a manner that they were initially inserted into the opening of the respective device, and then fixed by a post-pressing exterior through the first slot into the second channel region.
- the lowest in the figure device 54 is rotated so that the clamping sleeves on the ring in Rich ⁇ tion of the lower rod ends show.
- the device 52 is positioned so that a partial length of the stabilizer 41-44 at the lower end of the cage 70 remains free.
- a further device 51 is provided, which is like the device 52 is measured by the stabilizing means 41-44 in its full height.
- the device 1 which is measured only partially by the Stabilmaschinesmit ⁇ stuffs is 41-44. Rather, the stabilizing means 41-44 are applied in the device 1 such that the first channel region 23 and also an underlying portion of the second channel region 24, for example half of the channel region 24, remains free. In this way, each of the four channels is prepared to receive a stabilizer when plugging a further cage onto the first cage 70 in the widened first area 23.
- FIG. 4 shows cross sections through the three devices 1,
- each of the three devices 1, 51, 52 is formed by the inner contour in conjunction with the inserted stabilizing means 41-44, a substantially disc-shaped inner contour 95 for receiving a Ableit yarn.
- FIG. 5 shows the first cage 70, onto which a second cage 72 in the direction of 60 has been attached in the device 1.
- the second cage 72 has two devices 52, 54 which have stabilizing means 80, 81, 82.
- the construction of the second cage 72 is identical to the construction of the first cage 70, with the difference that only two devices 53, 54 are provided.
- a third device in the lower part is not provided because it is inserted into the device 1 of the first cage 70.
- FIG. 6 shows a cross section through the second cage 72.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermistors And Varistors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017205107.8A DE102017205107A1 (en) | 2017-03-27 | 2017-03-27 | Device for receiving stabilizing means of a surge arrester, arrangement and manufacturing method |
PCT/EP2018/057435 WO2018177923A1 (en) | 2017-03-27 | 2018-03-23 | Device for receiving stabilization means of a surge arrester, assembly, and production method |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3577735A1 true EP3577735A1 (en) | 2019-12-11 |
Family
ID=61952634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18716921.4A Withdrawn EP3577735A1 (en) | 2017-03-27 | 2018-03-23 | Device for receiving stabilization means of a surge arrester, assembly, and production method |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3577735A1 (en) |
DE (1) | DE102017205107A1 (en) |
WO (1) | WO2018177923A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE369803B (en) * | 1972-03-17 | 1974-09-16 | Asea Ab | |
DE19813135A1 (en) * | 1998-03-25 | 1999-09-30 | Asea Brown Boveri | Surge arresters |
DE602008003661D1 (en) * | 2008-01-24 | 2011-01-05 | Abb Technology Ag | High voltage overvoltage protection and operating method therefor |
DE102013213688A1 (en) * | 2013-07-12 | 2015-01-15 | Siemens Aktiengesellschaft | Casting method for producing a protective casing around a surge arrester and a mold for this purpose |
DE102014222451A1 (en) * | 2014-09-30 | 2016-03-31 | Siemens Aktiengesellschaft | Casting method for producing a protective coating around an active part of a surge arrester |
DE102015214942A1 (en) | 2015-08-05 | 2017-02-09 | Siemens Aktiengesellschaft | Device with recesses for receiving stabilizing rods of a surge arrester, system with the device, surge arresters and method for mounting a surge arrester |
-
2017
- 2017-03-27 DE DE102017205107.8A patent/DE102017205107A1/en not_active Ceased
-
2018
- 2018-03-23 EP EP18716921.4A patent/EP3577735A1/en not_active Withdrawn
- 2018-03-23 WO PCT/EP2018/057435 patent/WO2018177923A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE102017205107A1 (en) | 2018-09-27 |
WO2018177923A1 (en) | 2018-10-04 |
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Ipc: H01T 4/06 20060101ALI20211028BHEP Ipc: H01T 1/14 20060101ALI20211028BHEP Ipc: H01C 7/12 20060101ALI20211028BHEP Ipc: H02G 13/00 20060101AFI20211028BHEP |
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