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WO2022167491A1 - Récipient sous pression - Google Patents

Récipient sous pression Download PDF

Info

Publication number
WO2022167491A1
WO2022167491A1 PCT/EP2022/052495 EP2022052495W WO2022167491A1 WO 2022167491 A1 WO2022167491 A1 WO 2022167491A1 EP 2022052495 W EP2022052495 W EP 2022052495W WO 2022167491 A1 WO2022167491 A1 WO 2022167491A1
Authority
WO
WIPO (PCT)
Prior art keywords
tie rod
stiffening
container according
stiffening profile
opening
Prior art date
Application number
PCT/EP2022/052495
Other languages
German (de)
English (en)
Inventor
Alois Manfred VOGL
Alban NOTIN
Original Assignee
Schneider Electric Industries Sas
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schneider Electric Industries Sas filed Critical Schneider Electric Industries Sas
Publication of WO2022167491A1 publication Critical patent/WO2022167491A1/fr

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
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H02B13/045—Details of casing, e.g. gas tightness

Definitions

  • the present invention relates to a pressure vessel according to the preamble of claim 1, in particular for a switch panel in energy technology, in particular medium-voltage technology.
  • Such pressure vessels are usually filled with a pressurized fluid, for example gas, and are subject to a defined internal pressure which, depending on the requirements, can mean a high load on the material and the existing weld seams.
  • a pressurized fluid for example gas
  • sulfur hexafluoride among other things, was used as an insulating gas, but this is increasingly being replaced by other gases due to its harmful effect on the climate.
  • significantly higher filling pressures must be applied inside the pressure vessel in order to achieve the desired electrical and thermal insulation.
  • the tie rod or a fastening means of the tie rod can engage behind a stiffening profile.
  • the tie rod can be hung or hooked into at least one reinforcement profile, as a result of which simple and cost-effective assembly is possible.
  • the tie rod can be screwed to at least one stiffening profile, which enables inexpensive but stable and permanent assembly.
  • at least one stiffening profile has an opening with a reach-through section and a reach-through section, the reach-through section having a smaller area than the reach-through section.
  • the opening can have the shape of a keyhole.
  • a washer and a nut can be applied to the end of the tie rod, these elements then through the larger reach-through portion of the keyhole-shaped opening can be brought into the interior of the stiffening profile.
  • an opening that has only a single section that serves as a reach-through section and as a reach-through section at the same time.
  • a slit-shaped opening or an opening with a longitudinal extent can be provided, through which a holding element, for example in the form of a strip, is inserted and then twisted. By rotating the holding element, for example by about 90°, it can no longer pass through the oblong opening, so that the tie rod is attached to the stiffening profile.
  • the holding element can be firmly connected to the tie rod, for example welded.
  • the stiffening profile and/or the tie rod can have at least one anti-twist device for the retaining element, so that after it has been rotated by approximately 90°, it can no longer be twisted any further.
  • an anti-twist device can be produced, for example, by embossing a projection into the stiffening profile.
  • the tie rod can each have a thread with opposite directions of rotation at its ends. If nuts are then applied to both ends, both nuts can be tightened in only one direction by turning the tie rod. In this case, the nuts can be prevented from turning at the beginning by using a tool that is inserted through the opening in the stiffening profile, for example with an angled open-end wrench.
  • each stiffening profile can be quadrangular in cross section and in particular U-shaped and can be fastened, in particular welded, to a side wall. This results in a very stable construction and good force distribution.
  • tie rod is not welded to the stiffening profile or the side wall, since this reduces the manufacturing costs and as a result the tie rod only has to be introduced during final assembly.
  • a screw fastening which has an internal thread or an external thread can be attached to one of the two stiffening profiles.
  • a stud or nut can be welded on or attached in some other way.
  • An internal thread can also be introduced directly into a stiffening profile. The tie rod can then first be hung in an opening of the other stiffening profile so that it is gripped from behind, whereupon the tie rod can then be screwed into the screw fastening.
  • the tie rod can consist at least partially of dielectric material or be provided with electrical insulation, for example with an insulating sleeve or with a coating of dielectric material. Ceramics or high-strength plastics, for example, can be considered as dielectric materials.
  • this relates to a method for producing a pressure vessel, wherein the tie rod at a Stiffening profile is attached by inserting a holding element through an opening with a longitudinal extent into a stiffening profile and twisting it there.
  • the holding element can be moved against a stop by rotating it, so that it no longer rotates any further but is secured in its position.
  • this relates to a method for producing a pressure vessel of the type described above, in which the tie rod is first fastened at atmospheric pressure between the two stiffening profiles in such a way that the two side walls bend into the interior of the container, with the interior of the container then being is filled with fluid at such a pressure that the two side walls are no longer deflected.
  • the side walls are initially prestressed by the tie rod in such a way that the force applied by the tie rod is selected in such a way that the fluid pressure is compensated for after filling.
  • a container filled under high pressure for a switch panel can be created, which has essentially parallel side walls, so that several switch panels of the same type can be lined up next to one another in such a way that the respective side walls lie flat against one another.
  • FIG. 1 is a front perspective view of a pressure vessel
  • FIG. 2 is a partial sectional view of the container of FIG. 1;
  • FIG. 3 shows an enlarged representation of a tie rod screwed into a reinforcement profile
  • FIG. 4 shows a partially sectioned plan view of the stiffening profile of FIG. 3;
  • Figure 5A is a partial view of a container with a biased container sidewall
  • Fig. 5B shows the container of Fig. 5A after exposure to
  • FIG. 6 shows a view of a further embodiment of a stiffening profile with an inserted tie rod.
  • FIG. 1 shows a pressure vessel for a switching device in power engineering (not shown), which has a metal housing 12 that is sealed in a fluid-tight manner in the final assembled state.
  • the housing 12 does have various lead-through openings 16, 18 and 20. However, these are sealed in a fluid-tight manner after the final assembly has taken place.
  • the housing 12 has a basically cuboid structure and has a rear wall 30, a front wall 10, a lower base 32, 34, 36, an upper cover 38 and two parallel opposite side walls 40 and 42.
  • Reinforcing profiles 44 and 46 (FIG. 2) are welded to the outside of the front wall 10 and the rear wall 30.
  • FIG. Also located on the outside of the bottom 32 are stiffening profiles 48.
  • two stiffening profiles 50, 52 and 54, 56 are welded.
  • the stiffening profiles 52 and 54 as well as the stiffening profiles 56 and 58 are spaced parallel and the stiffening profiles 52 and 56 as well as the stiffening profiles 54 and 58 are opposite to each other.
  • stiffening profile 52 which is welded to the side wall 42 by means of welded connections 60, 62.
  • the stiffening profile 52 like the stiffening profiles 54, 56 and 58, is U-shaped in cross section in the illustrated embodiment and is welded to the side wall 42 with its two leg ends via the weld seams 60 and 62.
  • Other profiles with a square cross-section, such as rectangular hollow profiles, are also possible.
  • two stiffening profiles 52 and 56 as well as 54 and 58 are arranged opposite each other inside the housing 12, so that a tie rod 64 and 66 can be fastened between two stiffening profiles in each case.
  • the tie rods can be fastened by screwing.
  • an opening 70 with a reach-through section 71 and a reach-through section 73 is provided in each stiffening profile, with the reach-through section 73 having a smaller area than the reach-through section 71 .
  • the opening 70 has the shape of a keyhole, ie this opening 70 has a circular reach-through section 71 with a relatively large diameter, which is followed by a strip-shaped reach-through section 73 whose width is significantly smaller than the diameter of the circular section.
  • a washer 72 can be slipped onto a thread 78 applied to the end of the tie rod 64 and a nut 74 (FIG. 3) can be screwed on.
  • the end of the tie rod 64 can then be inserted together with the washer 72 and the nut 74 through the reach-through section 71 of the opening 70 and then lowered into the slot-like reach-through section 73 of the opening 70 (see FIG. 4), so that screwing can then take place the mother 74 can be done.
  • a wrench flat 76 is provided on each tie rod.
  • An initial co-rotation of the nut 74 can be prevented, for example, with the aid of an angled open-end wrench which is inserted through the opening 70.
  • the nut 74 is screwed onto the thread 78 at the end of the tie rod 64 . If a thread is also provided at the opposite end of the tie rod 64, but which has a mutual direction of rotation, the nuts at both ends can be tightened with a single rotary movement of the tie rod 64.
  • Fig. 6 shows another embodiment of a stiffening profile 52 which is fastened to the inside of the side wall in a pressure vessel.
  • the stiffening profile 52 has an opening 84 with a longitudinal extension, which thus forms an elongated slot through which one end of a tie rod 64 is inserted.
  • the end of the tie rod 64 is provided with a holding element 86 which is dimensioned in such a way that it can be pushed through the opening 84 .
  • the retaining element 86 can then be rotated (clockwise) until it is positioned at an orientation of approximately 90° to the longitudinal extent of the opening 84 .
  • an anti-twist device is provided on the stiffening profile 52 in the form of two projections 87 and 88 stamped into the stiffening profile, which prevent further turning of the retaining element 86 .
  • the holding element 86 can be welded to the tie rod 64, for example.
  • anti-twist protection could also be achieved by other elements on the stiffening profile 52 or on the holding element 86, for example by embossing, projections, lugs or the like, which bring about a form fit or friction fit.
  • tie rods 64 and 66 are welded to a stiffening profile or to a side wall, so that the attachment of the tie rods can be done in the course of a final assembly. It can also be seen that the tie rods 64 and 66 extend transversely through the housing 12 which is filled with live circuit elements, circuit traces and the like. In order to avoid electrical voltage peaks, a coating made of a dielectric insulating material 80 is injection-moulded onto each tie rod.
  • 5A and 5B illustrate a method for producing a pressure vessel of the type described above.
  • the tie rods 64 and 66 are first fastened at atmospheric pressure between two stiffening profiles in such a way that the side walls 40 and 42 lying opposite one another bend into the interior of the vessel (in Fig 5 only one side wall is shown).
  • the container is then filled with a fluid, for example with gas, under such a pressure that the two side walls 40 and 42 are no longer bent (cf. FIG. 5B), but are essentially plane-parallel opposite one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

Un récipient sous pression pour un tableau électrique de distribution d'énergie comprend un boîtier hermétique étanche aux fluides (12) présentant des profilés de renfort (52,54,56, 58) entre lesquels sont fixées des barres de tension (64, 66).
PCT/EP2022/052495 2021-02-05 2022-02-02 Récipient sous pression WO2022167491A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021102705.5 2021-02-05
DE102021102705.5A DE102021102705A1 (de) 2021-02-05 2021-02-05 Druckbehälter

Publications (1)

Publication Number Publication Date
WO2022167491A1 true WO2022167491A1 (fr) 2022-08-11

Family

ID=80595127

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/052495 WO2022167491A1 (fr) 2021-02-05 2022-02-02 Récipient sous pression

Country Status (2)

Country Link
DE (1) DE102021102705A1 (fr)
WO (1) WO2022167491A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3483995A1 (fr) * 2017-11-14 2019-05-15 ABB Schweiz AG Appareillage de commutation de tension moyenne à isolation gazeuse comportant un compartiment renforcé sous pression
EP3745548A1 (fr) * 2019-05-29 2020-12-02 Schneider Electric Industries SAS Récipient à isolation par gaz
FR3097383A1 (fr) * 2019-06-13 2020-12-18 Schneider Electric Industries Sas cuve à intégrité mécanique renforcée

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6603398U (de) 1967-10-12 1969-09-25 Gerhard Otto Kubischer behaelter mit ebenen waenden.
DE2558317A1 (de) 1975-12-23 1977-07-07 Masch & Werkzeugbau Gmbh Behaelter aus kunststoff
DE3343995A1 (de) 1983-12-06 1985-06-20 Muhr & Söhne, 5952 Attendorn Druck- und unterdruck-transportbehaelter
CN203536845U (zh) 2013-07-30 2014-04-09 上海天灵开关厂有限公司 一种气体绝缘断路器共箱安装柜

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3483995A1 (fr) * 2017-11-14 2019-05-15 ABB Schweiz AG Appareillage de commutation de tension moyenne à isolation gazeuse comportant un compartiment renforcé sous pression
EP3745548A1 (fr) * 2019-05-29 2020-12-02 Schneider Electric Industries SAS Récipient à isolation par gaz
FR3097383A1 (fr) * 2019-06-13 2020-12-18 Schneider Electric Industries Sas cuve à intégrité mécanique renforcée

Also Published As

Publication number Publication date
DE102021102705A1 (de) 2022-08-11

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