EP3497761A1 - Protection method and contact guard for performing the protection method - Google Patents
Protection method and contact guard for performing the protection methodInfo
- Publication number
- EP3497761A1 EP3497761A1 EP17777515.2A EP17777515A EP3497761A1 EP 3497761 A1 EP3497761 A1 EP 3497761A1 EP 17777515 A EP17777515 A EP 17777515A EP 3497761 A1 EP3497761 A1 EP 3497761A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrically insulating
- contact protection
- pressure vessel
- protection
- contact
- 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- Withdrawn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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
- H02G5/063—Totally-enclosed installations, e.g. in metal casings filled with oil or gas
Definitions
- the invention relates to a protective method for a pressure vessel arrangement comprising a pressure vessel with an electrically insulating section. It is known that pressure vessels of various Materia ⁇ lien can be composed, for example, can
- Pressure vessel have an electrically insulating portion.
- special precautions are to be taken, for example, for repairs in the vicinity of electrically insulating sections in order to avoid damaging the electrically insulating section. Repairs near electrically insulating sections are complex and therefore time-consuming.
- the object is achieved in a protective method of the type mentioned in that a contact protection is arranged in front of the electrically insulating section.
- a pressure vessel arrangement has a pressure vessel.
- the pressure vessel is provided to receive a medium in its interior, wherein the medium may have an overpressure or a negative pressure relative to the surroundings of the pressure vessel. Accordingly, the pressure vessel is such ⁇ be considered that he contradict the forces occurring due to a differential pressure between its interior and its exterior can stand.
- pressure vessels can be used as encapsulating housings for electrical electrical energy transmission systems. In this case may be preferably once closed in gas form electrically insulating fluids within the pressure vessels ⁇ ters. Electrically insulating fluids are at play as ⁇ fluorine-containing substances such as sulfur hexafluoride, Flu- ornitril, fluoroketone, or natural substances such as carbon dioxide, nitrogen and oxygen. As fluids also Ge ⁇ mix can be found with at least one of the foregoing use.
- the electrically insulating fluid inside the pressure vessel may serve to electrically insulate electrical phase conductors disposed inside the pressure vessel.
- the phase conductors are to be arranged in the interior of the pressure vessel electrically isolated from the pressure vessel.
- the electrically insulating fluid can flow around the phase conductors, so that there is electrical insulation between the phase conductor and the pressure vessel.
- an electrically insulating route between the phase conductor and an electrically conductive section of the pressure vessel can thus be produced.
- the electrically conductive section of the pressure vessel may, for example, carry ground potential.
- the electrically isolated fluid can be used.
- the phase conductor is at least partially surrounded by a solid insulation, so that at least to a partial formation of an electrically insulating path, the electrically insulating fluid, which is enclosed in the interior of the pressure vessel, can serve.
- An electrically insulating section on the pressure vessel may, for example, serve to guide a phase conductor out of the interior of the pressure vessel or into the interior of the pressure vessel.
- the phase leader can be fluid-tight in the electrically insulating portion of Druckbe ⁇ bibers embedded.
- As an electrically insulating cuts for example, are suitable organic Isolierwerk ⁇ agents, for example, insulating resins, which have sufficient electrically insulating properties at a rea ⁇ sponding mechanical strength.
- recesses in a (eg metallic) wall of the pressure vessel can be closed in a fluid-tight manner by means of an electrically insulating section.
- a contact protection in front of the electrically insulating section.
- the contact protection prevents an immediate action of forces on the electrically insulating section.
- the electrically insulating portion is mechanically protected.
- the electrically insulating portion may be subjected to a compressive load.
- the contact protection can be constructed in various ways and ensure different degrees of protection. In ⁇ example, the contact protection may have a grid structure to ensure protection against immediate access to the electrically insulating portion.
- the contact protection itself should advantageously have an electrically insulating effect.
- the contact protection for example, form an electrically insulating barrier, preferably as a closed wall, in front of the electrically insulating section. In this way it can be prevented that an electrical potential is carried over the contact protection.
- ground-potential is applied to electrically conductive elements (eg phase conductors) arranged on / in the electrically insulating section before arranging the contact protection.
- electrically conductive elements eg phase conductors
- electrically conductive elements arranged on / in the electrically insulating section may be phase conductors which are arranged in an electrically insulated manner inside the pressure vessel. These phase conductors can be the electrical enforce insulating section and are possibly also out ⁇ half of the pressure vessel accessible.
- the z. B. are embedded in the electrically insulating portion, a security is made briefly / or at least partially supported by the electrically insulating portion.
- the contact protection should be arranged in front of the electrically insulating section, that is to say spaced from the electrically insulating section. In this case, however, it may be advantageous for the contact protection to be supported at least partially and / or at least temporarily via the electrically insulating section.
- the portion of the electrically insulating portion can be used as a support structure in part ⁇ example, to assist in locating / aligning the contact protection.
- Magnetic forces are made, for example, to magnetic elements, which are located on the electrically insulating portion or the pressure vessel, made.
- the contact protection can be compacted for transport purposes.
- the contact protection In order to make the contact protection in its contact protection function effective, the contact protection can be deployed in front of the electrically insulating section. In this case, a deployment in the course of a mounting of the contact protection can be made.
- ei ⁇ ne unfolding of the contact protection is made in advance before mounting the contact protection.
- a mechanical enlargement of the contact protection can take place, so that the area covered by the contact protection corresponds at least to the area of the electrically insulating section which is to be protected.
- a support of the contact protection can be made using magnetic forces, which are for example made of magnetic elements which are located on the electrically insulating portion or on the pressure vessel. This helps, for example, even if the deployment of Berüh ⁇ insurance protection.
- a further advantageous embodiment can provide that the contact protection is wedged in front of the electrically insulating section. If one uses a wedging, the contact protection is frictionally positioned in front of the electrically insulating section. By wedging you can for example waive special bearing points for the contact protection on the pressure vessel.
- mechanical wedging wedges use fin ⁇ which are wedged into a joining gap between the contact protection and a pressure vessel can.
- the touch protection for example by virtue of onerous sealing elements which allow wedging of the Be ⁇ rroundungstikes.
- Wedging can take place, for example, with elastic deformation of at least portions of the contact protection.
- the contact protection can be designed to be at least partially elastically deformable, it being possible to provide a cushion in order to support the elastic deformability. can control wedges by changing the internal pressure of the pad.
- a further advantageous embodiment may provide that the electrically insulating portion is located on a flange of the pressure vessel to another pressure vessel, wherein initially the pressure in the interior of the further pressure vessel is lowered from ⁇ and formed from the further pressure vessel from access to the electrically insulating portion becomes.
- the pressure vessel is with another
- the connection is a flange use.
- the electrically insulating portion of the pressure vessel can be ⁇ arranged.
- the flange may have a flange, wherein the flange is spanned by the electrically insulating portion.
- the electrically insulating section can serve both for closing / delimiting the pressure vessel and also for the further pressure vessel.
- Pha ⁇ senleiter which are embedded in the electrically insulating portion may be divided into different modules. Thus it is possible to separate interfaces between modules of the phase conductors. This can simplify access to the electrically isolated section. Interfaces may be formed so that embedded in the electrically insulating portion phase conductors (with disassembled
- a further advantageous embodiment can provide that the contact protection is attached to the electrically insulating portion for alignment.
- An attaching for example, by stitching means mare ⁇ hen.
- a stapling agent for example, adhesive bonds, connectors, snap-in connections, magnets, etc. are used. This makes it possible to first position the contact protection, in order to subsequently secure it, for example by means of wedging, and to secure a force from the electrically insulating section when a force is applied.
- a stapling the Berstoffungsschut ⁇ zes can be carried out at a Jerusalemblasba- ren contact protection initially, wherein a shape and a force distribution can be made via the contact protection when inflated.
- wedging of the contact protection on a pressure vessel can also take place.
- wedging takes place by forming and / or expanding a membrane of the contact protection.
- a deformation or expansion of a membrane has the advantage that on the one hand a simplified unfolding of the contact protection is possible and on the other a simple Ver ⁇ wedging can be brought about by the change in shape. Independently of the existing spatial expansions, it is thus possible to easily adjust the wedging of the contact protection into the respective pressure vessel or to the respective pressure vessel.
- seals may be provided which can be filled with a fluid medium, so that a spatial extent of the seals may vary.
- a seal may, for example, extend on the casing side, in particular circumferentially, on the contact protection.
- Another object of the invention is to provide a touch ⁇ protection, which can be used to carry out the Schutzverfah- rens.
- the object is achieved in a contact protection for an electrically insulating portion of a pressure vessel, characterized in that the contact protection has an elastically deformable wall.
- the spatial extent of the protective barrier can be adapted in a simple manner .
- the protective barrier can be adapted to different diameters of electrically insulating sections in circular form.
- the elastically deformable wall can serve, for example, to make a wedging of the contact protection.
- a correspondingly deformable wall can be arranged on the circumference of the contact protection.
- the electrically insulating section is covered by an elastically deformable wall.
- an elastically deformable wall may define a bladder / pillow whose interior can be filled and emptied.
- the bladder / pad may be filled with a fluid (liquid or gaseous) to to stabilize the elastically deformable wall.
- a fluid liquid or gaseous
- the elastically deformable wall can act as an electrical insulator.
- an electrically insulating fluid can be used to fill a bladder / pad.
- the elastically deformable wall comprises a stretchable membrane ⁇ .
- a stretchable membrane makes it possible to design the contact protection with respect to the overstretched surface variable.
- the electrically insulating section can also have bulges or projections, ribs, etc., so that adaptation of the contact protection to various surface forms of the electrically insulating section can also be carried out by means of a stretchable membrane.
- electrically insulating portions to be protected may have different cross sections. By an elastically deformable wall, the cross section of the contact protection can be varied.
- the contact protection fixing means in particular magnetic Fixiermit ⁇ tel has.
- the fixatives make it possible to selectively fix the contact protection.
- the fixing means may be magnetic fixing means which allow the use of magnetic forces to fix the contact protection.
- the use of magnetic forces, for example, existing magnetic elements can be used to make an alignment of the contact ⁇ protection in a simple manner.
- a further advantageous embodiment can provide that the contact protection comprises a hollow body, in particular in a substantially cylindrical shape.
- a cylindrical shape makes it possible to equip the contact protection with an increased extent, in particular in the direction of a protective axis (cylinder axis) of the contact protection.
- the contact protection for example, depending on the height in the direction of the cylinder axis, a more or less strong immersion of forces that could act on the electrically insulating portion allow.
- Safety margins on the contact protection are created by the hollow body, which can be used, for example, when contact forces are applied to the contact protection.
- the touch guard may comprise a hollow body (eg, bubble / pad) that has a substantially cylindrical shape.
- an elastically deformable wall can be used to form the cylindrical shape.
- the contact protection comprises a stiffening element for the elastically deformable wall ⁇ .
- a stiffening element can have a higher rigidity in comparison to the elastically deformable wall.
- the stiffening element can be designed such that it does not undergo any elastic deformation. can be withdrawn.
- the stiffening element can also be formed from egg ⁇ ner deviating material combination , as z.
- the stiffening element can be in operative connection, for example, with the elastically deformable wall, for example, be supported by the elastically deformable wall, so that when overloading the elastically deformable wall via the stiffening element blocking a breakdown of a force on the elastically insulating section.
- the elastically deformable wall itself is equipped with a stiffening element.
- the elastically deformable wall for example, have a profiling in the form of ribs, beads or the like, which causes a stiffening of the same in certain zones of the elastic wall.
- a profiling in the form of ribs, beads or the like which causes a stiffening of the same in certain zones of the elastic wall.
- an end face of a cylindrical Be ⁇ rownungstikes can be traversed by a linear overall stiffening element, wherein z.
- a cross-section of a deformable wall of the shock protection is dominated by the stiffening member, so that the stiffening element may additionally support on walls of a pressure vessel from ⁇ at ⁇ play.
- a further advantageous embodiment may provide that the cylindrical shape has a symmetrical cross-section on ⁇ having a recess.
- a cylindrical shape may have a symmetrical cross section, wherein the cross section is penetrated by a recess.
- the recess can be arranged completely in an end face of the cylinder.
- the recess is arranged on the casing side on the cylinder, so that a lateral surface of the Zy ⁇ Linders is provided with a depression.
- the recess has access to the electrically insulating section spanned by the contact protection in a limited area of the contact protection. For example, it is possible lent equipment to pass through this recess.
- electrically conductive sections which are embedded in the electrically insulating section are earthed temporarily via a grounding device, wherein the grounding device can extend from the region of the electrically insulating section to be protected through the recess of the contact protection.
- a grounding device can extend from the region of the electrically insulating section to be protected through the recess of the contact protection.
- Figure 1 is a perspective view of a Berownungsschut
- FIG. 2 shows a perspective view of the contact protection, as known from FIG. 1, from an alternative direction, which
- Figure 3 shows a cross section through a pressure vessel
- Figure 4 shows a cross section through a pressure vessel
- Figure 5 shows a cross section through a pressure vessel with attached contact protection
- FIG. 6 shows a pressure vessel with a wedged contact protection.
- the contact protection 17 according to FIGS. 1 and 2 is a so-called deployable contact protection 17.
- the contact protection 17 has a substantially hollow-cylindrical shape.
- To form the hollow cylinder of the contact protection 17 is equipped with an elastic membrane 1.
- the elastic membrane forms a first end face 2 of a hollow body of the contact protection 17. Facing away from the first end face 2, the contact protection 17 has a second end face 3.
- the first and the second Stirnsei ⁇ te 2, 3 are constructed substantially cross-sectionally.
- the first and the second end face 2, 3 are surrounded on the shell side by a lateral surface 4.
- the lateral surface 4 and the two end faces 2, 3 are connected to each other gas-tight.
- the first face 2, the two ⁇ te end face 3 and the envelope surface 4 are advantageously designed as an elastic Memb ⁇ Ranen.
- the two end faces 2, 3 and the outer surface 3 can (the hollow body) include a hollow volume ⁇ , in which a gas can be introduced.
- the contact protection 17 is thus formed as a bubble or as a cushion.
- a valve 5 is arranged at the bladder / cushion. Via the valve 5 fluids can be introduced into the interior of theblaze ⁇ lumen or removed from this.
- the first and second end faces 2, 3 have a substantially circular cross-section.
- the diam ⁇ ser of the end faces 2, 3 are approximately made equal.
- a recess 6 is introduced in the circular surfaces of the end faces 2, 3, a recess 6 is introduced.
- the recess 6 is manufactured ⁇ det such that it introduces a depression in the lateral surface 4, so that in the direction of the cylinder axis of the contact ⁇ protection 17 shell side, a channel is formed.
- the recesses are completely surrounded by the end faces 2, 3.
- End face 2 is spanned by a stiffening element 7.
- the stiffening element 7 is strip-shaped Pleasebil ⁇ det and aligned substantially in alignment with the diameter of the first end face 2.
- the stiffening element 7 dimensioned such that the cross-sectional area of the Ers ⁇ th end face 2 is surmounted by the stiffening element 7 in the radial direction.
- the magnetic surfaces 8 can act magnetically (eg, ferromagnetically), so that it is possible to attach the contact protection using, for example, permanent magnets or electromagnets.
- the magnetic surfaces 8 may also themselves be designed as permanent magnets or electromagnets, so that fastening or attachment of the contact protection is made possible.
- FIG. 3 shows by way of example a pressure vessel 9 in cross-section.
- the pressure vessel 9 is formed substantially hollow cylindrical, wherein the cylinder axis of the
- Pressure vessel 9 extends substantially perpendicular to the plane. Inside the pressure vessel 9, three phase conductors 10a, 10b, 10c are arranged. The phase conductors 10a, 10b, 10c are brought via branch lines to an electrically insulating portion 11 of the pressure vessel 9 and pass through the electrically insulating portion 11.
- the electrically insulating portion 11 is formed as a so-called disc insulator (with a circular cross-section) and to a flange on the pressure vessel 9 scheduled.
- the pressure vessel 9 is connected via the flange connection with a further pressure vessel 12.
- the electrically insulating section 11 closes the pressure vessel 9 and the further pressure vessel 12 in each case in a fluid-tight manner and is penetrated by the stub lines in a fluid-tight manner.
- the further Druckbe ⁇ container 12 in turn has a first further flange 13a, a second further flange 13b, a third further flange 13c and a fourth further flange 13d.
- two of the further flanges 13a, 13b, 13c, 13d are aligned axially aligned diametrically opposite one another.
- a three-phase interrupter unit 14 is arranged inside the further pressure vessel 12.
- the three-phase interruption cherü 14 (shown in Figure 3 as "Single Line”) is connected to the branch lines, which lead to the phase conductors 10a, 10b, 10c of the pressure vessel 9 electrically conductively ⁇ inhibited.
- the stubs extend through the electrically insulating portion 11 at the first another
- a similarly constructed pressure vessel 15 is flanged to the second further flange 13b, so that stub lines of the similarly constructed pressure vessel 15 are electrically parallel to the stubs of the pressure vessel 9 and also connected to the dreipha ⁇ sigen interrupter unit 14.
- the interior of the pressure vessel 9, the similar Druckbe ⁇ container 15 and the other pressure vessel 12 is filled with an electrically insulating fluid.
- the electrically insulating fluid has in each of the pressure vessels 9, 15, 12 each approximately the same overpressure.
- the arranged between the pressure vessels 9, 15, 12 electrically insulating portions 11 are loaded with no differential pressure.
- suppression of an electrically insulating portion 11 results.
- the further pressure vessel 12 is brought to ambient pressure to safely make an opening of the further pressure vessel 12.
- the fourth further flange 13d is 29los ⁇ sen of a blind cover 16 sen. Due to the pressure equalization made the blind ⁇ lid can be opened 16th In order to provide better accessibility in the interior of the further pressure vessel 12, can
- the contact protection 17 When moving the contact protection 17 into the interior of the further pressure vessel 12, the contact protection 17 is in the non-inflated state. This makes it possible to move the contact protection into the interior of the further pressure vessel 12 via the fourth further flange 13d in a simple manner (cf., FIG. 4). It is now possible to support the contact protection 17 via the magnetic surfaces 8, at least temporarily, on the electrically insulating section 11.
- the magnetic surfaces 8 can also adhere, for example, to a short-circuit device 18a, 18b, 18c.
- the contact protection 17 is in front of the electrically insulating to be protected Attached to the section. Via a line 17 air can be pumped by means of a compression device 19 in the hollow volume of the contact protection.
- the contact protection 17 unfolds and wedges substantially over the lateral surface 4 in front of the electrically insulating section 11.
- the stiffening element 17 can rest on a pressure vessel 9, 12 outside the electrically insulating section 11 and provide stabilization. Due to the use of a recess 16 on the contact protection 17, it is possible to pass a grounding and short-circuit device 18a connected in an intermediate space between contact protection 17 and elastically insulating section 11 past into the interior of the further pressure container 12. Now, the electrically insulating portion 11 is protected by the contactor 17 against immediate access.
- the stiffening element 7 is supported on the inner wall regions of the further pressure vessel 12.
- the contact protection 17 is already inflated before the electrically insulating portion 11 is attached. Furthermore, it can be provided that the contact protection 17 is positioned exclusively via the magnetic surfaces 8.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016219814.9A DE102016219814A1 (en) | 2016-10-12 | 2016-10-12 | Protection method and protection against contact to carry out the protection procedure |
PCT/EP2017/073544 WO2018069001A1 (en) | 2016-10-12 | 2017-09-19 | Protection method and contact guard for performing the protection method |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3497761A1 true EP3497761A1 (en) | 2019-06-19 |
Family
ID=59997326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17777515.2A Withdrawn EP3497761A1 (en) | 2016-10-12 | 2017-09-19 | Protection method and contact guard for performing the protection method |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3497761A1 (en) |
DE (1) | DE102016219814A1 (en) |
WO (1) | WO2018069001A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2748614A1 (en) * | 1977-10-29 | 1979-05-03 | Manfred Vetter | DEVICE FOR SEALING PIPELINES |
JP2555088Y2 (en) * | 1992-02-25 | 1997-11-19 | 株式会社明電舎 | Protective cover for bushing |
FR2696882B1 (en) * | 1992-10-12 | 1994-12-09 | Alsthom Gec | System for connecting the casings of two devices, at least one of which is under pressure. |
FR3002701B1 (en) * | 2013-02-25 | 2015-04-10 | Alstom Technology Ltd | METHOD FOR EXTRACTING AN ENVELOPE FROM A METALLIC ENVELOPED GAS ISOLATION STATION (SEMC) |
DE202015104923U1 (en) * | 2015-09-16 | 2015-10-02 | Rag Aktiengesellschaft | Self-holding protective cap for a cutting tool |
-
2016
- 2016-10-12 DE DE102016219814.9A patent/DE102016219814A1/en not_active Withdrawn
-
2017
- 2017-09-19 EP EP17777515.2A patent/EP3497761A1/en not_active Withdrawn
- 2017-09-19 WO PCT/EP2017/073544 patent/WO2018069001A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO2018069001A1 (en) | 2018-04-19 |
DE102016219814A1 (en) | 2018-04-12 |
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