CN108695719A - A kind of assembly method of gas insulation switch cabinet sealing structure - Google Patents
A kind of assembly method of gas insulation switch cabinet sealing structure Download PDFInfo
- Publication number
- CN108695719A CN108695719A CN201810682744.4A CN201810682744A CN108695719A CN 108695719 A CN108695719 A CN 108695719A CN 201810682744 A CN201810682744 A CN 201810682744A CN 108695719 A CN108695719 A CN 108695719A
- Authority
- CN
- China
- Prior art keywords
- ring
- sealing ring
- type spiral
- cone type
- interior
- 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.)
- Granted
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
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Gasket Seals (AREA)
- Sealing Devices (AREA)
Abstract
A kind of assembly method of gas insulation switch cabinet sealing structure, includes the following steps, step 1)Tensioning apparatus and internal cone type spiral sealing ring, connect interior tensioning apparatus with internal cone type spiral sealing ring in making, and lubrication spacer ring is fitted into the mounting groove of pedestal;Step 2)Interior drive shaft is put into pedestal, is docked with lubrication spacer ring, is ensured concentric;Step 3)Compressed spring is fitted into the hexagon ring of interior drive shaft;Step 4)Silicon rubber lubricating grease is smeared at the conical surface of internal cone type spiral sealing ring, is mounted in pedestal;Step 5)The hexagonal connecting shaft of outer driving shaft is inserted into the hexagon ring of interior drive shaft, is docked;Step 6)Spacer ring is lubricated in outer driving shaft mounting means;Step 7)End cap and pedestal are sealed by trip bolt.The invention has the advantages that:Easy for installation, sealing effect greatly improves, and can be compensated automatically after sealing surface wear.
Description
Technical field
The invention belongs to switchgear sealing structure fields, and in particular to a kind of dress of gas insulation switch cabinet sealing structure
Method of completing the square.
Background technology
For gas insulation switch cabinet, core is safety in operation, reliability.It fully relies on and is sealed in gas chamber
What insulating gas medium and insulating pressure were realized.Therefore in gas insulation switch cabinet field, sealing is particularly important, and client is to sealing
30 years No leakages of requirement lead to plenum interior pressure reduction because once leaking, be greatly reduced to insulation performance,
Directly threaten it is reliable for operation, it is serious to generate explosion and jeopardizes personnel safety.
The switch explosion caused by decreasing insulating burns case and can be found everywhere, every year economic loss caused by it
It is very big.
The effect of sealing is in addition to the above-mentioned leakage for preventing gas-insulated medium, to ensure outside insulating reliability, also with
Lower several points effect:
1. reducing the insulation performance of equipment inside isolation outside moisture immersion charging compartment, the operational reliability of equipment is improved
And service life;
2. control the SF6 gas leaks with greenhouse effects promotes the feature of environmental protection of product with environmental protection;
3. gas insulation switch cabinet, which after operation, will produce sulfur dioxide, hydrogen fluoride, hydrogen sulfide, carbon monoxide etc., jeopardizes people
The substance of member's health, will have an adverse effect after leaking;
4. dielectric leaks, after-sale service maintenance cost is higher.
Totally two kinds of prior art:Static seal, dynamic sealing, the static seal generally good, permanent compression using resistant of high or low temperature
Small O-ring seals are deformed as sealing element, there are two types of forms at present for dynamic sealing:1. two groups or more skeleton oil seals;2.
Magnet fluid sealing, existing structure use outside framework oil seal:It is sealed using single lip, sealing reliability is poor, needs to wear in installation process
Dilatory on transmission shaft surface when crossing clamp spring groove or flank, it is in butterfly-shaped change to cause the scuffing of lip, Rig up error oil sealing
Shape damages sealing surface, and there are lip overturnings, and radial spring to be caused to loosen, and can all influence sealing effect
2, the risk of leakage caused by assembly is complicated and requires height is big, while assembling complexity causes workpiece scrappage high, in cost
It rises.
3, part in bulk is needing to install one by one, and efficiency of assembling is low.
Invention content
For deficiency in the prior art, the present invention provides a kind of assembly side of gas insulation switch cabinet sealing structure
Method is solved existing reinforced seal and is sealed using single lip, and sealing reliability is poor, needed in installation process across clamp spring groove,
Dilatory on transmission shaft surface or when flank, it is in butterfly-shaped deformation, damage sealing to cause the scuffing of lip, Rig up error oil sealing
Face, the problem of causing radial spring to loosen there are lip overturning, influence sealing effect.
The invention is realized by the following technical scheme.
A kind of assembly method of gas insulation switch cabinet sealing structure, including it is pedestal, interior drive shaft, outer driving shaft, interior
Bevel-type spiral sealing ring, interior tensioning apparatus, compressed spring, lubrication spacer ring, end cap and multiple trip bolts, interior tensioning dress
The tensioning retaining ring including both sides and intermediate rubber layer are set, the internal cone type spiral sealing ring includes sealing ring main body and L
Shape skeleton is provided with multiple grabs on the L-shaped skeleton, includes the following steps,
Step 1)Tensioning apparatus and internal cone type spiral sealing ring in making, connect interior tensioning apparatus and internal cone type spiral sealing ring
It connects, lubrication spacer ring is fitted into the mounting groove of pedestal;
Step 2)Interior drive shaft is put into pedestal, is docked with lubrication spacer ring, is ensured concentric;
Step 3)Compressed spring is fitted into the hexagon ring of interior drive shaft;
Step 4)Silicon rubber lubricating grease is smeared at the conical surface of internal cone type spiral sealing ring, is mounted in pedestal;
Step 5)By the hexagonal connecting shaft of outer driving shaft be inserted into drive shaft hexagon ring in, docked, while by outer driving
The conical surface of axis and the male cone (strobilus masculinus) and internal cone type spiral sealing ring of interior drive shaft fits together;
Step 6)Spacer ring is lubricated in outer driving shaft mounting means;
Step 7)End cap and pedestal are sealed by trip bolt.
Preferably, step 1)In, tensioning retaining ring is heated to 80 ~ 100 degrees Celsius, divides kind in haybox cooking 10,
Rubber layer surface uniformly smears fast viscose glue, and tensioning retaining ring is bonded together with rubber layer, forms interior tensioning apparatus.Tensioning is kept
Ring can adjust gap size with the cooperation of gap gasket is adjusted.
Preferably, L-shaped skeleton is put into mold, integrated injection molding goes out internal cone type spiral sealing ring, and through over cure
Molding.The sealing ring of sulfidization molding is more wear-resisting.
Preferably, step 1)In, grab is filled in the card slot hole of interior tensioning apparatus, is rotated clockwise, left side it is interior
Installation is complete for bevel-type spiral sealing ring, grab is filled in the card slot hole of interior tensioning apparatus, rotates counterclockwise, the inner cone on right side
Installation is complete for formula spiral sealing ring, connects interior tensioning apparatus and internal cone type spiral sealing ring.
Preferably, the sealing ring main material of the internal cone type spiral sealing ring is EPDM.
Preferably, the L-shaped skeleton material is stainless steel.
Preferably, the spiral lay of the internal cone type spiral sealing ring is 60 degree, screw pitch 0.6mm, the number of turns 9
Circle.Spiral shape angle makes well the conical surface more be close to seal.
Compared with prior art:Easy for installation, sealing effect greatly improves, and can be mended automatically after sealing surface wear
It repays.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the explosive view of the present invention.
Fig. 3 is the structural schematic diagram of the internal cone type spiral sealing ring of the present invention.
Fig. 4 is the structural schematic diagram of the L-shaped skeleton of the present invention.
Fig. 5 is the angle schematic diagram of the sealing screw lip line and axis of the present invention.
Fig. 6 is the structural schematic diagram of the interior tensioning apparatus of the present invention.
Fig. 7 is the interior tensioning apparatus explosive view of the present invention.
Fig. 8 is the schematic diagram when internal cone type spiral sealing ring of the present invention is assembled with interior tensioning apparatus.
The internal cone type spiral sealing ring and the schematic diagram after the assembly of interior tensioning apparatus that Fig. 9 is the present invention.
Figure 10 is the structural schematic diagram of sealing surface wear of the present invention compensation.
Specific implementation mode
A kind of gas insulation switch cabinet sealing structure, including pedestal 6, the pedestal 6 are fixedly installed on workbench,
Interior drive shaft 4 and outer driving shaft 5, the interior drive shaft 4 and the cooperation clamping of outer driving shaft 5, institute are provided in the pedestal 6
Package internal cone type spiral sealing ring 3 outside the access section of the interior drive shaft 4 and outer driving shaft 5 stated, the internal cone type spiral is close
Tensioning apparatus 2 in setting, is provided with compressed spring 9, described is interior in seal 3 between the interior drive shaft 4 and outer driving shaft 5
Bevel-type spiral sealing ring 3 includes sealing ring main body, and sealing screw lip line, the sealing ring is arranged in the sealing ring main body
Be provided with L-shaped skeleton 31 in main body, be provided with multiple grabs 32 on the L-shaped skeleton 31, the sealing screw lip line with
Between the angular range of axis is 50 degree to 70 degree, the interior tensioning apparatus 2 includes rubber layer 21 and the both sides of internal layer
It is tensioned retaining ring 22, the tensioning retaining ring 22 is binded by glue with rubber layer 21, opened in the tensioning retaining ring 22
Equipped with multiple strip-shaped holes, grab 32 is filled in the strip-shaped hole so that internal cone type spiral sealing ring 3 and 2 phase of interior tensioning apparatus
It connects, mounting groove is provided on the pedestal 6, is arranged in the mounting groove and lubricates spacer ring 8, the one of the pedestal 6
Side is additionally provided with end cap 7, and the end cap 7 is fixedly connected by trip bolt 1 with pedestal 6, the end cap 7 and pedestal 6 it
Between setting lubrication spacer ring 8, the side of the lubrication spacer ring 8 between the end cap 7 and pedestal 6 also sets up tune gap gasket, described
Multiple shaggy tooths are additionally provided at the top of sealing ring main body, ranging from 0.4 to 0.8 milli of screw pitch on the sealing screw lip line
Rice, the sealing screw lip line are dextrorotation line.
A kind of assembly method of gas insulation switch cabinet sealing structure, includes the following steps,
Step 1 makes interior tensioning apparatus 2, in step 1, tensioning retaining ring 22 is heated to 80 ~ 100 degrees Celsius, is protected in incubator
Fast viscose glue is uniformly smeared on warm 10 points of kinds, 21 surface of rubber layer, and tensioning retaining ring 22 is bonded together with rubber layer 21, forms interior
Tight device 2, connect interior tensioning apparatus 2 with internal cone type spiral sealing ring 3, and lubrication spacer ring 8 is fitted into the mounting groove of pedestal 6;
Step 2 is put into interior drive shaft 4 in pedestal 6, is docked with lubrication spacer ring 8, ensures concentric;
Step 3 is fitted into compressed spring 9 in the hexagon ring of interior drive shaft 4;
Step 4 smears silicon rubber lubricating grease at the conical surface of internal cone type spiral sealing ring 3, is mounted in pedestal 6;
Step 5 by the hexagonal connecting shaft of outer driving shaft 5 be inserted into drive shaft 4 hexagon ring in, docked, while by drive shaft
5 fit together with the conical surface of the male cone (strobilus masculinus) and internal cone type spiral sealing ring 3 of interior drive shaft 4;
Step 6 lubricates spacer ring 8 in 5 mounting means of outer driving shaft;
Step 7 seals end cap 7 and pedestal 6 by trip bolt 1;
Pedestal:Material brass, interactive construction main body frame, the pedestal for installing core element;
End cap:Material brass, primary structure is sealed within pedestal, is shielded;
Inner bevel-type spiral sealing rings:Material EPDM, core sealing element;
Lubricate spacer ring:Material Teflon, inside, outer driving shaft with risen between pedestal, end cap be isolated, reduce frictional resistance and be oriented to protect
The effect of holding;
Inside and outside drive shaft:Material stainless steel, hexgonal structure connect gas chamber and external operating mechanism, mechanical energy acting;
Screw:Material stainless steel, end cap is fixed on the base;
Compressed spring:The elastic connection of interior drive shaft and outer driving shaft;
Interior outer driving shaft rotates clockwise acting, including lubricating spacer ring 8, outer driving shaft male cone (strobilus masculinus) with risen between pedestal, end cap be isolated,
It reduces frictional resistance and is oriented to holding effect.The application internal gas pressure is designed as 0.04Mpa(Relative pressure), due to inside and outside
There are pressure difference, gas molecule generates escape leakage, and gas molecule can be excessive along cooperation gap face along interior drive shaft, at this time core
Silicon rubber grease composition between heart element novel framework Inner bevel-types spiral sealing ring and helical lip line plays a role;
The shaggy tooth of Inner bevel-type spiral sealing ring top designs plays sealing function, since installation is using interference fit so that
Inner bevel-type spiral sealing rings fit closely, empty with compression-expansion due to forming a series of gaps of shutting off between the tooth and tooth of design
Chamber, gas molecule achieve the purpose that Drain Resistance by generating throttle effect when by the gap of tortuous bumps.
It is in V word helical lip lines due to using conical design, breakthrough of gas, shutting off in the resistance of multilayer lip line prevents from leaking;
Inside and outside drive shaft can drive the silicon rubber lubricating grease between helical lip line in rotary course, band trend when rotating clockwise
Gather at center;When rotating counterclockwise, outside conical opening is flow backwards, and resists the excessive pressure of gas.Since the rubbing surface of the conical surface is big, silicon rubber
Glue lubricating grease not only acts as auxiliary seal and also has the effect for lubricating and reducing frictional resistance.
Sealing surface wear compensating movement principle:
Increase in a side position of the lubrication spacer ring of outer driving shaft and adjusts gap gasket 111(Such as Figure 10)So that gap size A reduces,
The conical surface is made to be adjacent to sealing ring under the effect of cooperation gap face in interior outer driving shaft male cone (strobilus masculinus) axis, while in variable seal assembly
Rubber extruded deforms, and generates reaction force f, and sealing ring inner conical surface is further bonded drive shaft.
It adjusting under the effect of gap gasket, gap size A reduces, and compressed spring generates power f1, and outer driving shaft is pressed on end cap,
It places and generates gap.
The application can be easy for installation, and sealing effect is fine, even if service life can compensate automatically if long.
Protection scope of the present invention includes but not limited to embodiment of above, and protection scope of the present invention is with claims
Subject to, any replacement being readily apparent that those skilled in the art that this technology is made, deformation, improvement each fall within the present invention's
Protection domain.
Claims (8)
1. a kind of assembly method of gas insulation switch cabinet sealing structure, including pedestal(6), interior drive shaft(4), outer driving shaft
(5), internal cone type spiral sealing ring(3), interior tensioning apparatus(2), compressed spring(9), lubrication spacer ring(8), end cap(7)With it is multiple tight
Gu screw(1), the interior tensioning apparatus(2)Tensioning retaining ring including both sides(22)With intermediate rubber layer(21), described
Internal cone type spiral sealing ring(3)Including sealing ring main body and L-shaped skeleton(31), the L-shaped skeleton(31)On be provided with it is more
A grab(32), include the following steps,
Step 1)Tensioning apparatus in making(2)With internal cone type spiral sealing ring(3), interior tensioning apparatus(2)With internal cone type spiral
Sealing ring(3)Connection, will lubricate spacer ring(8)It is packed into pedestal(6)Mounting groove in;
Step 2)Interior drive shaft(4)It is put into pedestal(6)In, with lubrication spacer ring(8)Docking ensures concentric;
Step 3)Compressed spring(9)Drive shaft in being packed into(4)Hexagon ring in;
Step 4)In internal cone type spiral sealing ring(3)The conical surface at smear silicon rubber lubricating grease, be mounted on pedestal(6)It is interior;
Step 5)By outer driving shaft(5)Hexagonal connecting shaft be inserted into drive shaft(4)Hexagon ring in, docked, simultaneously will
Outer driving shaft(5)With interior drive shaft(4)Male cone (strobilus masculinus) and internal cone type spiral sealing ring(3)The conical surface fit together;
Step 6)In outer driving shaft(5)Mounting means lubricate spacer ring(8);
Step 7)Pass through trip bolt(1)End cap(7)With pedestal(6)Sealing.
2. a kind of assembly method of gas insulation switch cabinet sealing structure according to claim 1, which is characterized in that step
Rapid 1)In, retaining ring will be tensioned(22)80 ~ 100 degrees Celsius are heated to, divides kind, rubber layer in haybox cooking 10(21)Surface is equal
The fast viscose glue of even smearing, is tensioned retaining ring(22)With rubber layer(21)It is bonded together, forms interior tensioning apparatus(2).
3. a kind of assembly method of gas insulation switch cabinet sealing structure according to claim 1, which is characterized in that
L-shaped skeleton(31)It is put into mold, integrated injection molding goes out internal cone type spiral sealing ring(3), and pass through sulfidization molding.
4. a kind of assembly method of gas insulation switch cabinet sealing structure according to claim 1, which is characterized in that
Step 1)In, by grab(32)Fill in interior tensioning apparatus(2)Card slot hole in, rotate clockwise, the internal cone type spiral in left side is close
Seal(3)Installation is complete, by grab(32)Fill in interior tensioning apparatus(2)Card slot hole in, counterclockwise rotate, the inner cone on right side
Formula spiral sealing ring(3)Installation is complete, connects interior tensioning apparatus(2)With internal cone type spiral sealing ring(3).
5. a kind of assembly method of gas insulation switch cabinet sealing structure according to claim 3, which is characterized in that institute
The internal cone type spiral sealing ring stated(3)Sealing ring main material be EPDM.
6. a kind of assembly method of gas insulation switch cabinet sealing structure according to claim 3, which is characterized in that institute
The L-shaped skeleton stated(31)Material is stainless steel.
7. a kind of assembly method of gas insulation switch cabinet sealing structure according to claim 3, which is characterized in that institute
The internal cone type spiral sealing ring stated(3)Spiral lay be 60 degree.
8. a kind of assembly method of gas insulation switch cabinet sealing structure according to claim 7, which is characterized in that institute
The internal cone type spiral sealing ring stated(3)Helix screw pitch be 0.6mm, the number of turns be 9 circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810682744.4A CN108695719B (en) | 2018-06-28 | 2018-06-28 | A kind of assembly method of gas insulation switch cabinet sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810682744.4A CN108695719B (en) | 2018-06-28 | 2018-06-28 | A kind of assembly method of gas insulation switch cabinet sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108695719A true CN108695719A (en) | 2018-10-23 |
| CN108695719B CN108695719B (en) | 2019-11-22 |
Family
ID=63850502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810682744.4A Active CN108695719B (en) | 2018-06-28 | 2018-06-28 | A kind of assembly method of gas insulation switch cabinet sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108695719B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201118138Y (en) * | 2007-10-30 | 2008-09-17 | 西安电力机械制造公司 | Gas insulated metal sealing switchgear drive shaft sealing device |
| CN202363742U (en) * | 2011-12-14 | 2012-08-01 | 天水长城开关厂有限公司 | Rotary sealing device |
| US8454025B2 (en) * | 2010-02-24 | 2013-06-04 | Freudenberg-Nok General Partnership | Seal with spiral grooves and mid-lip band |
| JP2014120250A (en) * | 2012-12-14 | 2014-06-30 | Toshiba Corp | Vacuum switch gear |
| CN206628716U (en) * | 2017-02-23 | 2017-11-10 | 戴顿（重庆）高压开关有限公司 | A kind of gas insulation switch cabinet dynamic sealing device |
-
2018
- 2018-06-28 CN CN201810682744.4A patent/CN108695719B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201118138Y (en) * | 2007-10-30 | 2008-09-17 | 西安电力机械制造公司 | Gas insulated metal sealing switchgear drive shaft sealing device |
| US8454025B2 (en) * | 2010-02-24 | 2013-06-04 | Freudenberg-Nok General Partnership | Seal with spiral grooves and mid-lip band |
| CN202363742U (en) * | 2011-12-14 | 2012-08-01 | 天水长城开关厂有限公司 | Rotary sealing device |
| JP2014120250A (en) * | 2012-12-14 | 2014-06-30 | Toshiba Corp | Vacuum switch gear |
| CN206628716U (en) * | 2017-02-23 | 2017-11-10 | 戴顿（重庆）高压开关有限公司 | A kind of gas insulation switch cabinet dynamic sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108695719B (en) | 2019-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108591464A (en) | A kind of gas insulation switch cabinet sealing structure | |
| CN201526675U (en) | Novel dynamic sealing device for gas | |
| US8641101B2 (en) | Oil transfer tube and assembly | |
| US4623152A (en) | Shaft seal arrangement with split housing | |
| CN209263394U (en) | A kind of effective rotation seal joint of solar energy heating | |
| CN108695719B (en) | A kind of assembly method of gas insulation switch cabinet sealing structure | |
| CN208457198U (en) | A kind of gas insulation switch cabinet sealing structure | |
| CN205315051U (en) | Terminal surface graphite sealing device and aviation air turbine starter | |
| CN107355543B (en) | External flushing built-in bearing cartridge type mechanical seal | |
| CN103437992A (en) | Dynamic characteristic simulation experiment set of five-parallel-shaft tooth-type compressor | |
| CN109668717A (en) | A kind of double-layer oil film double base squeeze film damper | |
| CN211315473U (en) | Internal and external pressure balance type corrugated compensator | |
| CN200982411Y (en) | Single trough multiplayer follow-up sealing device | |
| CN204438751U (en) | For the sealing device of malleation rotary kiln | |
| CN202971910U (en) | Mechanical seal device for reaction still | |
| CN208331310U (en) | A kind of petroleum anti-leakage device for ball valve | |
| CN209067840U (en) | Gland seal device | |
| CN206628716U (en) | A kind of gas insulation switch cabinet dynamic sealing device | |
| CN206983363U (en) | A kind of oil saving structure of air compressor | |
| CN207762227U (en) | A kind of variable propeller gearbox and its input end sealing device | |
| CN205678251U (en) | Hot blast regulation Circular ventilation door axle head composite sealing assembly | |
| CN205639847U (en) | Valve seal structure with automatic compensation function | |
| CN220816888U (en) | Flange sealing leakage-proof device | |
| CN206071938U (en) | Vertical mechanical seal for pump | |
| CN218935271U (en) | Coal feeder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: An assembly method of sealing structure for gas insulated switchgear Effective date of registration: 20220121 Granted publication date: 20191122 Pledgee: Agricultural Bank of China Limited Ningbo Yinzhou Branch Pledgor: NINGBO AUX HIGH TECHNOLOGY Co.,Ltd. Registration number: Y2022330000149 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221201 Granted publication date: 20191122 Pledgee: Agricultural Bank of China Limited Ningbo Yinzhou Branch Pledgor: NINGBO AUX HIGH TECHNOLOGY Co.,Ltd. Registration number: Y2022330000149 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315031 No.17, Fenglin Road, Cicheng Town, Jiangbei District, Ningbo City, Zhejiang Province Patentee after: Ningbo Aokes Intelligent Technology Co.,Ltd. Address before: 315031 No.17, Fenglin Road, Cicheng Town, Jiangbei District, Ningbo City, Zhejiang Province Patentee before: NINGBO AUX HIGH TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |