WO2022041829A1 - Dispositif de commutation et chambre d'extinction d'arc associée - Google Patents

Dispositif de commutation et chambre d'extinction d'arc associée Download PDF

Info

Publication number
WO2022041829A1
WO2022041829A1 PCT/CN2021/091847 CN2021091847W WO2022041829A1 WO 2022041829 A1 WO2022041829 A1 WO 2022041829A1 CN 2021091847 W CN2021091847 W CN 2021091847W WO 2022041829 A1 WO2022041829 A1 WO 2022041829A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
arc
thermal expansion
expansion chamber
axial
Prior art date
Application number
PCT/CN2021/091847
Other languages
English (en)
Chinese (zh)
Inventor
严旭
马占峰
路媛婧
朱凯
张文兵
史俊
赵培
吕军玲
马冲
Original Assignee
西安西电开关电气有限公司
中国西电电气股份有限公司
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 西安西电开关电气有限公司, 中国西电电气股份有限公司 filed Critical 西安西电开关电气有限公司
Priority to EP21859676.5A priority Critical patent/EP4207233A4/fr
Publication of WO2022041829A1 publication Critical patent/WO2022041829A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
    • H01H33/74—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in gas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H2033/888—Deflection of hot gasses and arcing products
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H2033/906—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism with pressure limitation in the compression volume, e.g. by valves or bleeder openings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7007—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein the flow is a function of the current being interrupted

Definitions

  • the present invention relates to the field of switch technology, in particular to a switch device, and more particularly to an arc extinguishing chamber.
  • the principle of self-energy arc extinguishing is that when the circuit breaker is opened, an arc will be generated between the fractures, and the arc temperature will be extremely high.
  • the designed arc extinguishing chamber uses the energy of the arc to increase the air pressure in the thermal expansion chamber, thereby establishing a pressure difference between the inside and outside of the thermal expansion chamber, so that when the current crosses zero, this pressure difference is used to quickly take away the thermally free molecules between the fractures. , to achieve the purpose of extinguishing the arc.
  • This principle of using arc energy to extinguish the arc is called the principle of self-energy arc extinguishing.
  • the key to breaking the SF6 circuit breaker is to establish a high enough air pressure in the expansion chamber.
  • air pressure There are various ways to establish air pressure.
  • the commonly used ones are mechanical and self-energy.
  • the mechanical type is to let the operating mechanism drive the piston in the pressure cylinder to move, and forcibly press the gas into the expansion chamber to achieve the purpose of pressurization.
  • the circuit breaker, especially the circuit breaker for breaking ultra-high current adopts the purely mechanical principle, which makes the volume of the circuit breaker and its supporting operating mechanism particularly huge, and such a product is not feasible in terms of economy and performance.
  • the principle of self-energizing arc extinguishing can greatly reduce the demand for the operation work of the mechanism to build pressure in the expansion chamber.
  • the arc gap when the opening movement starts, the moving contact moves along the axis, and when the moving contact moves to the side of the arc striking ring, the arc is fixed between the two arc striking rings. .
  • the heating of the thermal expansion chamber by the arc generally passes through the gap between the two arc pilot rings (hereinafter referred to as the arc gap).
  • the arc is equivalent to a charged conductor, which generates a magnetic field.
  • an arc is a charged plasma that is affected by a magnetic field. Therefore, the arc will tend to shrink under the influence of its own magnetic field. The greater the breaking current, the greater the systolic pressure. Due to the effect of arc shrinkage, the heating of the thermal expansion chamber by the arc is mainly thermal radiation, and the arc gap is not large, so the efficiency of the arc heating the expansion chamber through the arc gap is not high.
  • the present invention provides an arc extinguishing chamber to improve the utilization rate of arc energy.
  • the present invention also provides a switchgear with the above arc extinguishing chamber.
  • the present invention provides the following technical solutions:
  • An arc extinguishing chamber includes a first contact, a second contact, an arcing ring arranged between the first contact and the second contact and forming an arc gap, and an arcing ring on the first contact
  • a third contact moving in the axial direction with the second contact further comprising:
  • a circumferential thermal expansion chamber for collecting circumferential arc energy, the circumferential thermal expansion chamber circumferentially surrounding the arc gap between the arc rings;
  • an axial thermal expansion chamber for collecting axial arc energy
  • the third contact moves in the direction of the second contact from the first contact during the opening movement
  • the axial thermal expansion chamber is arranged On a side of the first contact away from the second contact, the axial thermal expansion chamber communicates with the arc gap.
  • the above-mentioned arc extinguishing chamber further comprises: a pressure cylinder for supplying high-pressure gas to the circumferential thermal expansion chamber, and the pressure cylinder communicates with the circumferential thermal expansion chamber.
  • the arcing ring includes a first arcing ring close to the first contact and a second arcing ring close to the second contact, the first arcing ring
  • the arc gap is formed between the ring and the second arcing ring.
  • the axial thermal expansion chamber is arranged symmetrically with respect to the center line of the third contact.
  • the axial thermal expansion chamber is a metal structure, and the inner surface is covered with a high temperature resistant material.
  • the end of the axial thermal expansion chamber away from the first contact has a pressure relief port, and the pressure relief port is provided with a pressure relief port for controlling the on-off of the pressure relief port
  • the pressure relief valve is controlled to be turned on.
  • a deflector is provided on the end surface of the axial thermal expansion chamber away from the third contact, and the deflector is connected to the axial thermal expansion chamber from the free end.
  • the end portion is gradually expanded, and the free end of the guide plate faces the third contact.
  • a switchgear includes an arc-extinguishing chamber, wherein the arc-extinguishing chamber is the arc-extinguishing chamber described in any one of the above.
  • part of the generated arc energy enters the axial thermal expansion chamber by means of axial airflow, and another part of the arc energy enters the circumferential thermal expansion chamber through gas convection and radiation from the arc gap.
  • the thermal expansion chambers are arranged in each possible flow direction of the arc, so that all the arc energy is utilized, waste is avoided, and the utilization rate of the arc energy is improved.
  • FIG. 1 is a schematic structural diagram of an arc extinguishing chamber in an embodiment of the present invention.
  • the invention discloses an arc extinguishing chamber to improve the utilization rate of arc energy.
  • the present invention also discloses a switchgear with the above arc extinguishing chamber.
  • the present application discloses an arc extinguishing chamber, at least one arcing system, the arcing system includes a first contact 2 , a second contact 7 , an arcing ring and a third contact 8 , in addition
  • a circumferential thermal expansion chamber 5 and an axial thermal expansion chamber 3 are also included.
  • the arcing ring is arranged between the first contact 2 and the second contact 7 and there is an arc gap B between the arcing ring, and the above-mentioned third contact 8 is between the first contact 2 and the second contact 7 And move along the axial direction of the first contact 2 and the second contact 7, and contact the first contact 2 and the second contact 7 in the closing position; when the third contact 8 is in the opening position, by The first contact 2 moves toward the second contact 7. During this process, after the third contact 8 is separated from the first contact 2, an arc is generated between the two, and part of the generated arc energy is generated by the axial airflow.
  • the thermal expansion chambers are arranged in each possible flow direction of the arc, so that all the arc energy is utilized, waste is avoided, and the utilization rate of the arc energy is improved.
  • the arc extinguishing chamber further includes a pressure cylinder 6 for supplying high-pressure gas to the circumferential thermal expansion chamber 5 , and the pressure cylinder 6 communicates with the circumferential thermal expansion chamber 5 .
  • the pressure cylinder 6 is connected with the circumferential thermal expansion chamber 5 through several passages. Through the movement of the piston in the compression cylinder 6, the gas in the compression cylinder 6 is compressed to increase the pressure in the compression cylinder 6, and the high-pressure gas is pressed into the circumferential thermal expansion chamber 5 through the passage.
  • the pressure cylinder has two main functions: first, before the third contact 8 and the first contact 2 are separated (ie before arcing), the gas in the pressure cylinder 6 is pressed into the circumferential thermal expansion chamber 5, so that the The pressure of the base gas in the circumferential thermal expansion chamber 55 is increased, so that the gas is heated and boosted from a higher pressure; secondly, when a small current is interrupted, the energy of the arc is not enough to make the circumferential thermal expansion chamber 5 establish enough.
  • the pressure cylinder 6 is required to assist in establishing the pressure.
  • the press cylinder 6 in the present application includes two bottom surfaces 10 and an annular insulating cylinder disposed between the two bottom surfaces.
  • the axial airflow of the arc enters the axial thermal expansion chamber 3, and the gas is heated to increase the pressure.
  • the gas in the axial thermal expansion chamber 3 takes away the thermally dissociated molecules between the fractures; the interruption is small.
  • the gas is mainly injected into the circumferential thermal expansion 5 through the pressure cylinder 6 to increase the pressure.
  • the gas in the circumferential thermal expansion chamber 5 takes away the thermally free state between the fractures. molecular.
  • the two thermal expansion chambers have their own division of labor, so that the arc extinguishing chamber can interrupt currents of various sizes.
  • the above arcing ring includes a first arcing ring 1 close to the first contact 2 and a second arcing ring 9 close to the second contact 7, and the first arcing ring 1 and the second arcing ring 9
  • the above-mentioned arc gap B is formed between the arcing rings 9 , and the axial thermal expansion chamber 3 communicates with the arc gap B through the moving space of the third contact 8 .
  • the above-mentioned third contact 8 moves along the axial direction of the inner ring of the above-mentioned annular structure.
  • the axial thermal expansion chamber 3 is symmetrically arranged with respect to the center line of the third contact 8, which is the most convenient for processing and installation, and is also beneficial to the collection of axial arc energy. In practice, different arrangements can also be set according to different needs.
  • the axial thermal expansion chamber 3 can be made of metal material or high-strength insulating material. Because the temperature of the airflow entering the axial thermal expansion chamber 3 is very high, the first inner wall 3a, the second inner wall 3b and the third inner wall 3c of the axial thermal expansion chamber 3 are preferably covered with ablation-resistant insulating materials. Coatings may be employed to mitigate thermal damage to the materials of which they are constructed.
  • the insulating material may be polytetrafluoroethylene.
  • the end of the axial thermal expansion chamber 3 in the present application away from the first contact 2 has a pressure relief port, and a pressure relief valve 4 for controlling the on-off of the pressure relief port is provided at the pressure relief port, When the pressure in the axial thermal expansion chamber 3 reaches a preset value, the pressure relief valve 4 is controlled to be turned on.
  • the pressure relief valve 4 does not act when the arc-extinguishing chamber is normally switched off; if other components of the arc-extinguishing chamber fail, causing the arc-extinguishing chamber to fail to extinguish the arc normally, the axial airflow generated by the arc energy will continuously enter
  • the axial thermal expansion chamber 3 increases the air pressure limit in the axial thermal expansion chamber 3, and there is a risk of permanent mechanical damage to the arc extinguishing chamber.
  • the pressure relief valve 4 action to release the air pressure in the axial thermal expansion chamber 3 to avoid mechanical damage to the arc extinguishing chamber.
  • a deflector is provided on the end face of the axial thermal expansion chamber 3 disclosed in this application away from the third contact 8 , and the deflector is gradually expanded from the free end to the end connected to the axial thermal expansion chamber 3 , and the free end of the deflector faces the third contact 8 .
  • a conical protrusion is arranged in the center of the end of the axial thermal expansion chamber 3.
  • the conical protrusion can be integrated with the pressure relief valve 4, that is, the conical protrusion is a part of the pressure relief valve 4. Realize quick installation and improve assembly efficiency.
  • the sum of the volumes of the circumferential thermal expansion chamber 5 and the axial thermal expansion chamber 3 disclosed in this application should be equivalent to the volume of a single thermal expansion chamber of the arc extinguishing chamber that interrupts the same current, so as to achieve the premise of the same thermal expansion chamber volume, as much as possible collected arc energy.
  • the specific dimensions of the circumferential thermal expansion chamber 5 and the axial thermal expansion chamber 3 can be set according to actual needs, and they are all within the protection range.
  • the present application also discloses a switchgear, which applies the arc-extinguishing chamber disclosed in the above embodiments. Therefore, the switchgear having the arc-extinguishing chamber also has all the above-mentioned technical effects, which will not be repeated here.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

Un dispositif de commutation et une chambre d'extinction d'arc associée sont divulgués. La chambre d'extinction d'arc comprend un premier contact, un deuxième contact, des bagues d'arc disposées entre le premier contact et le deuxième contact et formant un espace d'arc, et un troisième contact se déplaçant axialement entre le premier contact et le deuxième contact. La chambre de distinction d'arc comprend en outre : une chambre d'expansion thermique circonférentielle permettant de collecter de l'énergie d'arc circonférentiel, la chambre d'expansion thermique circonférentielle entourant de manière circonférentielle l'espace d'arc entre les bagues d'arc ; et une chambre d'expansion thermique axiale permettant de collecter de l'énergie d'arc axial, lors d'un mouvement d'ouverture, le troisième contact se déplaçant du premier contact vers le deuxième contact, la chambre d'expansion thermique axiale étant disposée sur le côté du premier contact à l'opposé du deuxième contact et la chambre d'expansion thermique axiale étant en communication avec l'espace d'arc. Une partie de l'énergie d'arc générée pénètre dans la chambre d'expansion thermique axiale au moyen d'une circulation axiale, et l'autre partie de l'énergie d'arc entre dans la chambre d'expansion thermique circonférentielle à partir de l'espace d'arc au moyen d'une convection de gaz et d'un rayonnement, de telle sorte que toute l'énergie d'arc est utilisée, ce qui permet d'éviter les déchets et d'améliorer le taux d'utilisation d'énergie d'arc.
PCT/CN2021/091847 2020-08-25 2021-05-06 Dispositif de commutation et chambre d'extinction d'arc associée WO2022041829A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21859676.5A EP4207233A4 (fr) 2020-08-25 2021-05-06 Dispositif de commutation et chambre d'extinction d'arc associée

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010866044.8A CN112002605B (zh) 2020-08-25 2020-08-25 一种开关设备及其灭弧室
CN202010866044.8 2020-08-25

Publications (1)

Publication Number Publication Date
WO2022041829A1 true WO2022041829A1 (fr) 2022-03-03

Family

ID=73470434

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/091847 WO2022041829A1 (fr) 2020-08-25 2021-05-06 Dispositif de commutation et chambre d'extinction d'arc associée

Country Status (3)

Country Link
EP (1) EP4207233A4 (fr)
CN (1) CN112002605B (fr)
WO (1) WO2022041829A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112002605B (zh) * 2020-08-25 2022-08-12 西安西电开关电气有限公司 一种开关设备及其灭弧室
CN116153734B (zh) * 2023-03-07 2024-08-30 西安西电开关电气有限公司 一种灭弧室及其工作方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1232280A (zh) * 1998-04-14 1999-10-20 Abb研究有限公司 断路器
CN1232279A (zh) * 1998-04-14 1999-10-20 Abb研究有限公司 断路器
CN2708485Y (zh) * 2004-05-20 2005-07-06 江苏东源电器集团股份有限公司 户外高压自能式六氟化硫断路器
CN102306591A (zh) * 2011-08-31 2012-01-04 中国西电电气股份有限公司 一种含有复合型绝缘筒的自能熄弧开关装置
EP3032561A1 (fr) * 2014-12-08 2016-06-15 Siemens Aktiengesellschaft Arrangement d'interrupteur électrique
CN112002605A (zh) * 2020-08-25 2020-11-27 西安西电开关电气有限公司 一种开关设备及其灭弧室

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0610949B2 (ja) * 1985-05-15 1994-02-09 アルストム 高電圧用遮断器
CN101162662A (zh) * 2007-10-22 2008-04-16 沈阳工业大学 具有叶片的旋气式喷口高压气吹断路器
JP5218449B2 (ja) * 2010-03-02 2013-06-26 三菱電機株式会社 ガス遮断器
WO2012077436A1 (fr) * 2010-12-07 2012-06-14 三菱電機株式会社 Disjoncteur à explosion gazeuse
CN203013625U (zh) * 2012-11-08 2013-06-19 上海思源高压开关有限公司 高压气体断路器
DE102013108154A1 (de) * 2013-07-30 2015-02-05 Abb Technology Ag Leistungsschalter
CN105390335B (zh) * 2015-12-17 2018-06-29 中国西电电气股份有限公司 一种增加热膨胀效应的自能灭弧室
CN110838420A (zh) * 2018-08-15 2020-02-25 平高集团有限公司 断路器及其灭弧室
CN208922988U (zh) * 2018-12-14 2019-05-31 西安西电电气研究院有限责任公司 自能灭弧室及其灭弧结构

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1232280A (zh) * 1998-04-14 1999-10-20 Abb研究有限公司 断路器
CN1232279A (zh) * 1998-04-14 1999-10-20 Abb研究有限公司 断路器
CN2708485Y (zh) * 2004-05-20 2005-07-06 江苏东源电器集团股份有限公司 户外高压自能式六氟化硫断路器
CN102306591A (zh) * 2011-08-31 2012-01-04 中国西电电气股份有限公司 一种含有复合型绝缘筒的自能熄弧开关装置
EP3032561A1 (fr) * 2014-12-08 2016-06-15 Siemens Aktiengesellschaft Arrangement d'interrupteur électrique
CN112002605A (zh) * 2020-08-25 2020-11-27 西安西电开关电气有限公司 一种开关设备及其灭弧室

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4207233A4

Also Published As

Publication number Publication date
EP4207233A4 (fr) 2024-09-04
CN112002605A (zh) 2020-11-27
CN112002605B (zh) 2022-08-12
EP4207233A1 (fr) 2023-07-05

Similar Documents

Publication Publication Date Title
WO2022041829A1 (fr) Dispositif de commutation et chambre d'extinction d'arc associée
US5723840A (en) Gas-dielectric high-tension interrupter of the arc-puffer type
US2933575A (en) Circuit interrupters
JPS6182631A (ja) 圧縮ガス遮断器
JPH1031945A (ja) 電力遮断器
RU2665694C1 (ru) Автоматическая дугогасительная камера для повышения эффекта теплового расширения
CN103000444A (zh) 一种自能式sf6断路器双喷口式灭弧室及其灭弧方法
RU2811082C1 (ru) Коммутационное устройство и дугогасящая камера для него
CN112289628B (zh) 一种双压力膨胀室灭弧室
US4237356A (en) Electrical compression switch with contact movement assistor
EP0436951A2 (fr) Disjoncteur à gaz
KR101040592B1 (ko) 복합 소호형 가스 차단기
US11373824B2 (en) Gas-insulated high or medium voltage circuit breaker
CN116153734B (zh) 一种灭弧室及其工作方法
GB691169A (en) Improvements relating to air-blast switches
CN216120217U (zh) 用于刻蚀装置的缓冲构件和刻蚀装置
RU2094886C1 (ru) Дугогасительное устройство высоковольтного газонаполненного автокомпрессионного выключателя
JPH0864088A (ja) パッファ形ガス遮断器
JPS5831293Y2 (ja) パツフア形ガスしゃ断器
JPH0887935A (ja) パッファ形ガス遮断器
JP2000294095A (ja) パッファ形ガス遮断器
JP2021099926A (ja) ガス遮断器
JP2000294096A (ja) パッファ形ガス遮断器
WO2020003854A1 (fr) Disjoncteur à gaz
JPH1012104A (ja) ガス遮断器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21859676

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2022107595

Country of ref document: RU

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2021859676

Country of ref document: EP

Effective date: 20230327