CN202159923U - Intelligent inflatable high-voltage vacuum switch cabinet for metros - Google Patents
Intelligent inflatable high-voltage vacuum switch cabinet for metros Download PDFInfo
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- CN202159923U CN202159923U CN 201120277590 CN201120277590U CN202159923U CN 202159923 U CN202159923 U CN 202159923U CN 201120277590 CN201120277590 CN 201120277590 CN 201120277590 U CN201120277590 U CN 201120277590U CN 202159923 U CN202159923 U CN 202159923U
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- chamber
- plenum chamber
- main bus
- breaker
- station isolating
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Abstract
An intelligent inflatable high-voltage vacuum switch cabinet for metros comprises a low-voltage chamber, an upper mechanism operation chamber, a lower mechanism operation chamber, a lower overhaul chamber, a lower decompression chamber, a main bus-bar inflating chamber, a cable installation chamber, a vacuum breaker inflating chamber and a rear decompression chamber. The intelligent inflatable high-voltage vacuum switch cabinet is mainly characterized in that a main conductive return circuit of the high-voltage vacuum switch cabinet is sealed in the main bus-bar inflating chamber and the breaker inflating chamber, one three-station isolating/grounding switch is respectively arranged in the main bus-bar inflating chamber and the breaker inflating chamber, and the main bus-bar inflating chamber and the breaker inflating chamber are electrically connected through a middle connector. During overhaul or power failure, both the two three-station isolating/grounding switches can be grounded, thereby effectively guaranteeing safety of the maintenance personnel during overhaul. When a breaker has large failure and cannot be maintained on site, the three-station isolating/grounding switch in the main bus-bar inflating chamber can be separated, relative connection pieces can be dismounted, the vacuum breaker inflating chamber can be drawn out, and a backup compartment is installed, so that power supply is restored quickly, and deadly defects of the single air chamber switch cabinet of not being capable of being maintained on site and being long in power failure time are overcome.
Description
Technical field
The utility model relates to a kind of solid insulation high voltage vacuum switchgear cabinet, refers in particular to a kind of subway with intelligent gas-filled type (C-GIS) high voltage vacuum switchgear cabinet.
Background technology
Medium pressure gas insulated metal sealing switch equipment is the nineties in the last century complete power distribution equipment of new and high technology that gets up of new development in the world; With modularization, multi-functional combination, high reliability and compact conformation is design object; Created preeminent accomplishment technical, economically; Representing the developing direction and the advanced international standard of contemporary medium voltage switchgear equipment, to the expansion of middle pressure field, adopt SF6 gas or the SF6 and the N of low-pressure: mist is as dielectric with conventional GIS technology for it.Form brand-new complete tandem product to the GIS technology with technological combination of switch cubicle and be referred to as Cubicle Gas-Insulated Switchgear; And it is little with its volume; Antipollution obtains users' approval very soon; Natural environment and the abominable relatively occasions of condition such as the particularly suitable reliability requirement is high and underground, plateau, coastal area, application surface is more and more wider.Yet at present: the producer that has released gas-filled type (C-GIS) vacuum circuit-breaker cabinet; Design level still rests on the level of last century eight, the nineties; Bellows is still adopted in the sealing of vacuum circuit-breaker operating mechanism and charging compartment; Bellows welded seal technology difficulty of processing is big, and the domestic quality that only has a tame factory can reach processing request, while bellows itself at present is also very unstable, thereby there is very big gas leakage potential safety hazard in whole charging compartment.Be single air chamber structure simultaneously mostly, the equipment operation security reliability is lower, goes wrong causing whole power failures till maintenance is accomplished like a product, seriously possibly also will change whole product under the situation, interruption duration can be longer.This is that important power supply user institute is unallowable, like railway traffic, aviation etc.Reason owing to single air chamber structure; A three-station isolating/grounding switch can only be arranged; Thereby go into outlet or end of incoming cables do not have reliable ground protection, operation, maintainer's safety is ensured completely, satisfied not the actual motion requirement of China's electric power system.Researching and developing and a kind ofly have greater security and can, can conveniently overhaul and safeguard, reach the high-tension switch cabinet of intelligent level again, is the basis of important electricity consumption place safety assurances such as underground railway, aviation.
The utility model content
The purpose of the utility model is to have overcome above-mentioned defective, provides a kind of and seals the subway reliable, that maintenance is convenient, safe and reliable with intelligent gas-filled type high voltage vacuum switchgear cabinet.
The utility model is achieved in that a kind of subway is with intelligent gas-filled type high voltage vacuum switchgear cabinet; It comprises low-pressure chamber, attend mechanism's operating room, down mechanism's operating room, overhaul chamber, pressure releasing chamber, main bus bar plenum chamber, cable installation room, vacuum circuit-breaker plenum chamber, back pressure releasing chamber down down; Its main feature is that the main conductive circuit of high voltage vacuum switchgear cabinet is sealed in main bus bar plenum chamber and the circuit breaker plenum chamber; Be equipped with a three-station isolating/grounding switch in two plenum chambers, main bus bar plenum chamber and circuit breaker plenum chamber adopt intermediate connector to be electrically connected.
Further; The vacuum circuit-breaker plenum chamber is positioned at the upper back of switch cubicle; In sulphur hexafluoride insulating gas, plug-in voltage transformer, three-station isolating/grounding switch, solid sealed pole of vacuum circuit breaker, intermediate connector, connection busbar, big electric current inner cone insulator are housed; The top upside-down mounting of circuit breaker plenum chamber has the plug-in voltage transformer; Front portion installed in the upper and lower order three-station isolating/grounding switch, solid sealed pole of vacuum circuit breaker; The middle fixed contact of three-station isolating/grounding switch links to each other with the moving conductive end of solid sealed pole of vacuum circuit breaker, and the quiet conducting end of solid sealed pole of vacuum circuit breaker connects busbar through one and links to each other with the bottom intermediate connector, and the preceding fixed contact of three-station isolating/grounding switch major loop links to each other with big electric current inner cone insulator through connecting busbar.
Further; The main bus bar plenum chamber is positioned at the middle part of switch cubicle; In sulfur hexafluoride gas, three-phase main bus bar, branch's busbar, three-station isolating/grounding switch, intermediate connector are housed; The left and right sides, bottom of main bus bar plenum chamber is arranged in a triangle the three-phase main bus bar is installed; Main busbar links to each other with the preceding fixed contact of three-station isolating/grounding switch through branch's busbar, and the middle fixed contact of three-station isolating/grounding switch links to each other with the intermediate connector of circuit breaker plenum chamber bottom through the intermediate connector at top is installed.
Further, main connecting portion, the cable junction of main bus bar plenum chamber and vacuum circuit-breaker plenum chamber are equipped with wireless temperature measuring device, are provided with intelligent microcomputer protecting device in the low-pressure chamber.
Further, main bus bar plenum chamber and circuit breaker plenum chamber adopt double-deck stainless steel to be welded.
The beneficial effect of the utility model is following:
Because the main conductive circuit of high voltage vacuum switchgear cabinet is sealed in main bus bar plenum chamber and the circuit breaker plenum chamber; Be equipped with a three-station isolating/grounding switch in two plenum chambers; Maintenance or following two three-station isolating/grounding switch of power down mode all can ground connection, effectively ensured the safety the when attendant overhauls.Main bus bar plenum chamber and circuit breaker plenum chamber adopt intermediate connector to be electrically connected; When the breaker chamber appearance can not be keeped in repair than the major break down scene; Main bus bar chamber three-station isolating/grounding switch can be separated, remove the associated fitting, the vacuum circuit-breaker plenum chamber can be extracted out; Change subsequent use compartment, restore electricity rapidly, having overcome single in the past air chamber switch cubicle can not on-site maintenance and the long critical defect of interruption duration.
Main connecting portion, the cable junction of main bus bar plenum chamber and vacuum circuit-breaker plenum chamber are equipped with wireless temperature measuring device; The temperature rise situation at each position in the time of can monitoring the switch cubicle operation through receiving system, air gauge also is the special table with high and low air pressure contact.Can the barometric information of switch cubicle three-station isolating/grounding switch, vacuum circuit-breaker, each charging compartment, the temperature rise situation of each main contact of major loop be realized that all on-site supervision and teletransmission cause upper level master supervisory control system, make switch cubicle satisfy intelligentized requirement fully in conjunction with comprehensive protector.
The unified compartment of arranging the front portion of charging compartment and setting up each separate unit of three-station isolating/grounding switch and breaker operation mechanism.The housing of two charging compartments is double-decker; The rear portion of circuit breaker, the bottom of main bus bar are equipped with Explosion-proof valve; Thereby do not injure the adjacent switch cabinet can ensure because of the charging compartment internal fault fully the time, and satisfying the requirement of IEC62271-200 internal fault arc protection fully, the security performance of switch cubicle is further improved; The world of having filled up this type product is blank, has represented following Medium Voltage Switchgear developing direction.
The utility model adopts modularized design, vacuum pole technology, two-layer air chamber structure, but has reached maximum personal safety guarantee flexible expansion, has compact conformation, long-life, volume are little, the gas-filled type high-pressure modular vacuum circuit-breaker cabinet of intelligent characteristics.Can satisfy the requirement that important electricity consumption places such as underground railway, aviation become distribution, make it the safety guarantee level that reaches higher.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the left view of the utility model.
Fig. 3 is the cutaway view of the utility model.
Fig. 4 is the main temperature rise position sketch map of the utility model.
In the accompanying drawing, 1-airtight table, 2-three-station isolating/grounding switch operating mechanism, 3-operating grip; The movable sealing of 4-rotary magnetic fluid, 5-three-station isolating/grounding switch, the movable sealing of 6-Direct Action Type magnetic fluid, 7-solid sealed pole of vacuum circuit breaker; 8-vacuum circuit-breaker, 9-connection busbar, 10-big electric current inner cone insulators; 11-internal cone type insulator, 12-shunting busbar, 13-conducting rod; 14-intermediate connector, 15-connection busbar, 16-connection busbar; 201-low-pressure chamber, 202-attend mechanism's operating room, 203-following mechanism operating room, 204-down maintenance chamber, 205-following pressure releasing chamber, 206-main bus bar plenum chamber, 207-cable installation room, 208-vacuum circuit-breaker plenum chamber, 209-back pressure releasing chamber, 210-external plug-in voltage transformer, 301-airtight table, 302-intermediate connector; 303-three-station isolating/grounding switch operating mechanism, the movable sealing of 304-rotary magnetic fluid, 305-three-station isolating/grounding switch; 306-intermediate connector, 307-main busbar, 308-branch busbar; 401-cable end, 402-plug-in lightning arrester, 501-voltage transformer and inner cone insulator and busbar junction; Fixed contact and vacuum circuit-breaker moving conductive end junction in the middle of 502-three-station isolating/grounding switch, 503-three-station isolating/grounding switch front end fixed contact be connected double fixedly busbar junction, quiet conducting end connection busbar of 504-vacuum circuit-breaker and intermediate connector junction; 505-shunting busbar and big electric current inner cone insulator junction, 601-plug-in cable joint and big electric current inner cone insulator junction, 602-plug-in lightning arrester and inner cone insulator junction; Fixed contact and intermediate connector junction in the middle of the three-station isolating/grounding switch of 603-main bus bar chamber, 604-three-station isolating/grounding switch and branch bar junction, 605-main bus bar and branch bar junction.
Embodiment
Below in conjunction with accompanying drawing the utility model specific embodiment is set forth in detail.
Like Fig. 1, shown in Figure 2; The utility model relates to a kind of novel subway with intelligent gas-filled type (C-GIS) high voltage vacuum switchgear cabinet, it includes low-pressure chamber 201, attendes mechanism's operating room 202, down mechanism's operating room 203, overhaul chamber 204, ten big functional modules such as pressure releasing chamber 205, main bus bar plenum chamber 206, cable installation room 207, vacuum circuit-breaker plenum chamber 208, back pressure releasing chamber 209, external plug-in voltage transformer 210 down down.Its main feature is that the main conductive circuit of switch cubicle is divided into two charging compartments 206,208.Main bus bar plenum chamber 206 is positioned at the middle part of switch cubicle; Vacuum circuit-breaker plenum chamber 208 is positioned at the upper back of switch cubicle; Be equipped with a three-station isolating/grounding switch 5,305 in two compartments; Maintenance or following two switches of power down mode all can ground connection, effectively ensured the safety the when attendant overhauls.Main bus bar plenum chamber 206 adopts intermediate connector 13,14,302 to be electrically connected with vacuum circuit-breaker plenum chamber 208.When 208 appearance of vacuum circuit breaker plenum chamber can not be keeped in repair than the major break down scene; Can separate the three-station isolating/grounding switch 305 in the main bus bar plenum chamber 206; Remove the associated fitting, can extract vacuum circuit-breaker plenum chamber 208 out; Change subsequent use compartment, restore electricity rapidly, having overcome single in the past air chamber switch cubicle can not on-site maintenance and the long critical defect of interruption duration.Switch cabinet body has all been adopted except that front and back panel and has been covered aluminium zinc steel plate and after the multiple bending of CNC machine tooling, assemble; Compartment 205,207 adopts aluminium alloy extrusions to assemble, and main circuit compartment 206,208 adopts double-deck stainless steel to be welded through the full-automatic mechanical hand.Guarantee consistency, rigidity and the machining accuracy of cabinet, be convenient in batches production simultaneously.
Referring to Fig. 1, Fig. 3; But the secondary component of installation and control protection usefulness in the low-pressure chamber 201.Operating mechanism 2, operating grip 3 and the vacuum circuit-breaker 8 of three-station isolating/grounding switch 5 are installed in the last mechanism operating room 202, airtight table 1 is installed simultaneously.Three-station isolating/grounding switch operating mechanism 2 partly links to each other through three-station isolating/grounding switch 5 conductions in the movable sealing 4 of rotary magnetic fluid and the air chamber.Vacuum opens circuit and links to each other through the solid pole of vacuum in the movable sealing 6 of Direct Action Type magnetic fluid and the air chamber through the device operating mechanism.Be filled with hypobaric SF6 insulating gas in the vacuum circuit-breaker charging compartment 208, its top and rear portion upside-down mounting have and are connected plug-in voltage transformer 210, plug-in lightning arrester and the internal cone type insulator of using as outside electrical verification 11, also use as the support of bus simultaneously.Front portion installed in the upper and lower order three-station isolating/grounding switch 5 and solid sealed pole of vacuum circuit breaker 7; The middle fixed contact of three-station isolating/grounding switch 5 links to each other with the moving conductive end of solid sealed pole of vacuum circuit breaker 7; The quiet conducting end of solid sealed pole of vacuum circuit breaker 7 connects busbar 9 and links to each other with bottom intermediate connector 14 through one; The preceding fixed contact of three-station isolating/grounding switch 5 is connected busbar 15 through connection busbar 16 and links to each other with another; Connect busbar 15 and link to each other with big electric current inner cone insulator 10, the formation vacuum complete major loop of charging compartment that opens circuit through shunting busbar 12.
Referring to Fig. 1, Fig. 3: the operating mechanism 303 that three-station isolating/grounding switch is installed in the following mechanism operating room 203; The airtight table 301 of main bus bar charging compartment 206 is installed equally, and three-station isolating/grounding switch operating mechanism 303 links to each other through three-station isolating/grounding switch 305 in the movable sealing 304 of rotary magnetic fluid and the air chamber.The left and right sides, bottom of main bus bar charging compartment is arranged in a triangle three-phase main bus bar intermediate connector 306 is installed; Intermediate connector 306 can carry out cabinet and be connected with bus between cabinet; Be connected with three-phase master busbar 307 in the intermediate connector of the left and right sides; Main busbar 307 links to each other with the preceding fixed contact of three-station isolating/grounding switch 305 through branch's busbar 308, and the middle fixed contact of three-station isolating/grounding switch 305 links to each other with intermediate connector 302 again, thereby goes into a complete major loop.
Referring to Fig. 3: main bus bar plenum chamber 206 dock with being electrically connected through intermediate connector 302 and intermediate connector 14 of vacuum circuit-breaker plenum chamber 208, and connection is conducted electricity by the conducting rod that has the watchband type spring touch finger 13 in the centre.And carry out insulation processing by a silicone rubber sleeve.
Referring to Fig. 3: every phase can be installed the cable end 401 of two 1250A in the cable installation room 207; Need to install under the situation of a cable like less of electric current; Three-phase plug-in lightning arrester 402 can be installed simultaneously, and cable end and lightning arrester all are that the inner cone insulator 10 through plug-in and vacuum circuit-breaker charging compartment 208 is electrically connected.
Referring to Fig. 4: subway is equal temperature rise situation through each position of radio detection monitoring with the main current-carrying part of intelligent gas-filled type (C-GIS) high voltage vacuum switchgear cabinet; Can foresee in advance with the pilot switch cabinet and whether be in normal operating condition; The generation of minimizing accident; Can make switch cubicle satisfy intelligentized requirement fully with the supporting use of intelligent microcomputer protecting device, the security performance of switchgear is further enhanced.But monitoring site voltage transformer and inner cone insulator and busbar junction 501; Fixed contact and vacuum circuit-breaker moving conductive end junction 502 in the middle of the three-station isolating/grounding switch; Three-station isolating/grounding switch front end fixed contact be connected the fixedly busbar junction 503 of holding concurrently; The quiet conducting end of vacuum circuit-breaker connects busbar and intermediate connector junction 504, shunting busbar and big electric current inner cone insulator junction 505, plug-in cable joint and big electric current inner cone insulator junction 601; Plug-in lightning arrester and inner cone insulator junction 602; Fixed contact and intermediate connector junction 603 in the middle of the three-station isolating/grounding switch of main bus bar chamber, three-station isolating/grounding switch and branch bar junction 604, main bus bar and branch bar junction 605.
It is to be noted; The utility model is not limited to above-mentioned execution mode; Any simple modification, equivalent variations and modification that any professional and technical personnel of being familiar with does the foregoing description in based on the utility model technical scheme all belong in the protection range of the utility model.
Claims (5)
1. a subway is with intelligent gas-filled type high voltage vacuum switchgear cabinet; It comprises low-pressure chamber, attend mechanism's operating room, down mechanism's operating room, overhaul chamber, pressure releasing chamber, main bus bar plenum chamber, cable installation room, vacuum circuit-breaker plenum chamber, back pressure releasing chamber down down; It is characterized in that: the main conductive circuit of high voltage vacuum switchgear cabinet is sealed in main bus bar plenum chamber and the circuit breaker plenum chamber; Be equipped with a three-station isolating/grounding switch in two plenum chambers, main bus bar plenum chamber and circuit breaker plenum chamber adopt intermediate connector to be electrically connected.
2. a kind of subway as claimed in claim 1 is with intelligent gas-filled type high voltage vacuum switchgear cabinet; It is characterized in that: described vacuum circuit-breaker plenum chamber is positioned at the upper back of switch cubicle; In sulphur hexafluoride insulating gas, plug-in voltage transformer, three-station isolating/grounding switch, solid sealed pole of vacuum circuit breaker, intermediate connector, connection busbar, big electric current inner cone insulator are housed; The top upside-down mounting of circuit breaker plenum chamber has the plug-in voltage transformer; Front portion installed in the upper and lower order three-station isolating/grounding switch, solid sealed pole of vacuum circuit breaker; The middle fixed contact of three-station isolating/grounding switch links to each other with the moving conductive end of solid sealed pole of vacuum circuit breaker; The quiet conducting end of solid sealed pole of vacuum circuit breaker connects busbar through one and links to each other with the bottom intermediate connector, and the preceding fixed contact of three-station isolating/grounding switch major loop links to each other with big electric current inner cone insulator through connecting busbar.
3. a kind of subway as claimed in claim 1 is with intelligent gas-filled type high voltage vacuum switchgear cabinet; It is characterized in that: described main bus bar plenum chamber is positioned at the middle part of switch cubicle; In sulfur hexafluoride gas, three-phase main bus bar, branch's busbar, three-station isolating/grounding switch, intermediate connector are housed; The left and right sides, bottom of main bus bar plenum chamber is arranged in a triangle the three-phase main bus bar is installed; Main busbar links to each other with the preceding fixed contact of three-station isolating/grounding switch through branch's busbar, and the middle fixed contact of three-station isolating/grounding switch links to each other with the intermediate connector of circuit breaker plenum chamber bottom through the intermediate connector at top is installed.
4. a kind of subway as claimed in claim 1 is with intelligent gas-filled type high voltage vacuum switchgear cabinet; It is characterized in that: main connecting portion, the cable junction of described main bus bar plenum chamber and vacuum circuit-breaker plenum chamber are equipped with wireless temperature measuring device, are provided with intelligent microcomputer protecting device in the described low-pressure chamber.
5. a kind of subway as claimed in claim 1 is characterized in that with intelligent gas-filled type high voltage vacuum switchgear cabinet: described main bus bar plenum chamber and circuit breaker plenum chamber adopt double-deck stainless steel to be welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120277590 CN202159923U (en) | 2011-08-02 | 2011-08-02 | Intelligent inflatable high-voltage vacuum switch cabinet for metros |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120277590 CN202159923U (en) | 2011-08-02 | 2011-08-02 | Intelligent inflatable high-voltage vacuum switch cabinet for metros |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202159923U true CN202159923U (en) | 2012-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120277590 Expired - Lifetime CN202159923U (en) | 2011-08-02 | 2011-08-02 | Intelligent inflatable high-voltage vacuum switch cabinet for metros |
Country Status (1)
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| CN (1) | CN202159923U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916362A (en) * | 2011-08-02 | 2013-02-06 | 湖南丰日电源电气股份有限公司 | Intelligent inflatable high-pressure vacuum switch cabinet for metro |
| CN103036171A (en) * | 2012-12-04 | 2013-04-10 | 北海银河开关设备有限公司 | Solid insulation voltage transformer cabinet |
| CN103066507A (en) * | 2012-12-31 | 2013-04-24 | 青岛特锐德电气股份有限公司 | Switch cabinet |
| CN103078259A (en) * | 2013-01-09 | 2013-05-01 | 长兴县供电局 | Ring main unit improvement method for reducing switching station power failure time |
| CN103311838A (en) * | 2012-03-14 | 2013-09-18 | 株式会社日立制作所 | Switchgear |
| CN103794999A (en) * | 2012-10-31 | 2014-05-14 | 仪征恒运电器有限公司 | Metal-closed looped network switch cabinet |
| WO2022133779A1 (en) * | 2020-12-23 | 2022-06-30 | Abb Schweiz Ag | Apparatus for measuring temperature of switchgear and switchgear |
-
2011
- 2011-08-02 CN CN 201120277590 patent/CN202159923U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916362A (en) * | 2011-08-02 | 2013-02-06 | 湖南丰日电源电气股份有限公司 | Intelligent inflatable high-pressure vacuum switch cabinet for metro |
| CN102916362B (en) * | 2011-08-02 | 2016-03-02 | 湖南丰日电源电气股份有限公司 | A kind of Intelligent inflatable high-voltage vacuum switch cabinet for metros |
| CN103311838A (en) * | 2012-03-14 | 2013-09-18 | 株式会社日立制作所 | Switchgear |
| CN103311838B (en) * | 2012-03-14 | 2016-02-24 | 株式会社日立制作所 | Switchgear |
| CN103794999A (en) * | 2012-10-31 | 2014-05-14 | 仪征恒运电器有限公司 | Metal-closed looped network switch cabinet |
| CN103036171A (en) * | 2012-12-04 | 2013-04-10 | 北海银河开关设备有限公司 | Solid insulation voltage transformer cabinet |
| CN103066507A (en) * | 2012-12-31 | 2013-04-24 | 青岛特锐德电气股份有限公司 | Switch cabinet |
| CN103066507B (en) * | 2012-12-31 | 2015-06-10 | 青岛特锐德电气股份有限公司 | Switch cabinet |
| CN103078259A (en) * | 2013-01-09 | 2013-05-01 | 长兴县供电局 | Ring main unit improvement method for reducing switching station power failure time |
| WO2022133779A1 (en) * | 2020-12-23 | 2022-06-30 | Abb Schweiz Ag | Apparatus for measuring temperature of switchgear and switchgear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Intelligent inflatable high-pressure vacuum switch cabinet for metro Effective date of registration: 20150104 Granted publication date: 20120307 Pledgee: Bank of Beijing Limited by Share Ltd Changsha branch Pledgor: Hu'nan Fengri Power and Electric Co., Ltd. Registration number: 2014430000027 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160218 Granted publication date: 20120307 Pledgee: Bank of Beijing Limited by Share Ltd Changsha branch Pledgor: Hu'nan Fengri Power and Electric Co., Ltd. Registration number: 2014430000027 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120307 |
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| CX01 | Expiry of patent term |