CN105743270B - A kind of outgoing line sealing structure of transformer oil pump - Google Patents
A kind of outgoing line sealing structure of transformer oil pump Download PDFInfo
- Publication number
- CN105743270B CN105743270B CN201610294104.7A CN201610294104A CN105743270B CN 105743270 B CN105743270 B CN 105743270B CN 201610294104 A CN201610294104 A CN 201610294104A CN 105743270 B CN105743270 B CN 105743270B
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- China
- Prior art keywords
- locating piece
- pump housing
- conducting rod
- transformer oil
- oil pump
- 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.)
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- 238000007789 sealing Methods 0.000 title claims abstract description 81
- 238000005266 casting Methods 0.000 claims abstract description 22
- 239000003292 glue Substances 0.000 claims abstract description 22
- 238000012856 packing Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 description 9
- 239000000919 ceramic Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010057855 Hypotelorism of orbit Diseases 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The present invention provides a kind of outgoing line sealing structures of transformer oil pump, belong to transformer oil pump technical field of sealing technology.It solves the problems, such as that existing transformer oil pump sealing effect is poor.The outgoing line sealing structure of this transformer oil pump, transformer oil pump includes the pump housing, there is wiring hole on the pump housing, outer locating piece is located at the outside of the pump housing, interior locating piece is located at the inside of the pump housing, interior locating piece is made by fastener, outer locating piece, conducting rod is fixedly connected with the pump housing, the first sealing ring is equipped between outer locating piece and the pump housing, the second sealing ring is equipped between outer locating piece and conducting rod, the inner end that conducting rod is located in the pump housing is connected with lead-out wire, casting glue is filled in the pump housing at conducting rod inner end, casting glue makes to be fixed in the pump housing with the lead-out wire that conducting rod inner end is connected, casting glue blocks the pump housing, interior locating piece, conducting rod and the mutual gap of lead-out wire.This outgoing line sealing structure has the advantages that improve transformer oil pump sealing effect and security performance.
Description
Technical field
The invention belongs to transformer oil pump technical field of sealing technology, are related to a kind of outgoing line sealing structure of transformer oil pump.
Background technology
Transformer oil pump is a kind of hermetically sealed pump, for transformer forced oil-circulation, and transformer oil pump has leakproofness
Very high requirement.
At present, the method generally used for the sealing of transformer oil pump lead-out wire is isolated using terminal plate, existing
Transformer oil pump terminal plate, such as Chinese patent literature data disclose electric locomotive transformer oil pump terminal plate [application number：
201320389775.3；Authorization Notice No.：CN203348135U], including metal connection column, upper metalwork, pressure-resistant ceramic body,
Lower metalwork and metal connection plate；Wiring hole is offered on metal connection plate, pressure-resistant ceramic body is inserted in wiring hole, metal connection
Column is inserted in pressure-resistant ceramic body and prominent pressure-resistant ceramic body both ends, upper metalwork are arranged on pressure-resistant ceramic body top and metal connection
Between column, lower metalwork is arranged between pressure-resistant ceramic body and metal connection plate；Metal connection column, upper metalwork, pressure resistance ceramics
Body, lower metalwork and metal connection plate together with ceramic welding technique welded seal, form a rigidity entirety by metal,
That is electric locomotive transformer oil pump terminal plate.
The terminal plate of this kind of structure is resisted against outside the pump housing, and the bottom surface of terminal plate sets an O-shaped seal groove, O-shaped seal groove
O-ring seal is inside installed, sealing function is played only by O-ring seal between the terminal plate and the pump housing of this kind of structure, it is close
Envelope effect is poor, and there are the risks of oil leak；And after transformer oil pump motor lead-out wire is connect with binding post, motor lead-out wire does not have
It is fixed, it may appear that due to hypotelorism or contact and cause insulated electro between lead-out wire and lead-out wire or between lead-out wire and casing
Hinder too low, there are some potential safety problemss.
Invention content
The purpose of the present invention is be directed to the above-mentioned problems in the prior art, it is proposed that a kind of outlet of transformer oil pump
The technical issues of sealing structure, solution is the safety of the sealing effect and transformer oil pump that how to improve transformer oil pump outlet
Property.
The purpose of the present invention can be realized by following technical proposal：A kind of outgoing line sealing structure of transformer oil pump becomes
Depressor oil pump includes the pump housing, has wiring hole on the pump housing, which is characterized in that the outgoing line sealing structure include conducting rod,
Outer locating piece, interior locating piece and fastener, the interior locating piece and outer locating piece are made of insulating materials, the outer locating piece
Positioned at the outside of the pump housing, the interior locating piece is located at the inside of the pump housing, and the conducting rod passes through interior locating piece, wiring hole and outer fixed
Position block, is fixedly connected with interior locating piece, outer locating piece, conducting rod and the pump housing by fastener, has between the conducting rod and the pump housing
There is gap, the first sealing ring is equipped between the outer locating piece and the pump housing, second is equipped between the outer locating piece and conducting rod
Sealing ring, the inner end that the conducting rod is located in the pump housing are connected with lead-out wire, are filled at conducting rod inner end in the pump housing
There is casting glue, the casting glue makes to be fixed in the pump housing with the lead-out wire that conducting rod inner end is connected, the casting glue closure pump housing,
Interior locating piece, conducting rod and the mutual gap of lead-out wire.
First sealing ring seals the gap between outer locating piece and the pump housing, and the second sealing ring seals outer locating piece and conducting rod
Between gap, the first sealing ring and the second sealing ring are as the first resealing；It is filled at conducting rod inner end in the pump housing
Casting glue blocks the pump housing, interior locating piece, conducting rod and the mutual gap of lead-out wire by casting glue, and casting glue is as the
Two resealings by dual-seal, improve the sealing effect of transformer oil pump outlet, making will not oil leak at wiring hole；And
Casting glue makes to be fixed in the pump housing with the lead-out wire that conducting rod inner end is connected after fixing, between lead-out wire and lead-out wire, lead-out wire
The distance between pump housing will not change, i.e., between lead-out wire and lead-out wire, lead-out wire and the pump housing will not be in contact, Bu Huizao
It is too low into insulation resistance, will not be short-circuit, so as to improve the safety of transformer oil pump.
In a kind of outgoing line sealing structure of above-mentioned transformer oil pump, there is annular on the lateral wall of the interior locating piece
Shoulder block, the interior positioning block portion point are located in wiring hole, and the lateral wall of locating piece and the side wall of wiring hole are affixed in the part
It closes, the annular shoulder block is resisted against on the pump housing.Conducting rod passes through interior locating piece, and interior positioning block portion point is located in wiring hole, ensures
There is gap, conducting rod will not be in contact with the pump housing, improve safety between conducting rod and the pump housing；And in wiring hole
The lateral wall of interior locating piece and the side wall of wiring hole fit, annular shoulder block fits with the pump housing, interior locating piece play position,
The effect sealed firmly is also functioned to while fixed function, improves the sealing effect of transformer oil pump outlet.
In a kind of outgoing line sealing structure of above-mentioned transformer oil pump, there is groove, institute on the lateral wall of the pump housing
State outer locating piece part in the grooves, the bottom of the outer locating piece is resisted against the bottom of groove.Outer locating piece part is located at
In groove, groove positions the effect of outer locating piece installation site, and the bottom of outer locating piece is resisted against the bottom of groove, outer locating piece
Play the role of sealing firmly, improve the sealing effect of transformer oil pump outlet.
In a kind of outgoing line sealing structure of above-mentioned transformer oil pump, the bottom of the outer locating piece has the first sealing
Ring support, first sealing ring are located in the first packing holder.The setting of first packing holder stablizes the installation of the first sealing ring,
First sealing ring plays the role of better seal, improves the sealing effect of transformer oil pump outlet.
In a kind of outgoing line sealing structure of above-mentioned transformer oil pump, the inside at the top of the outer locating piece has second
Packing holder, the sidewall slope setting of second packing holder, second sealing ring is located in the second packing holder, described
Compact heap is provided between outer locating piece and fastener.Compact heap is made to compress the second sealing ring by fastener, make the second sealing
Circle moves inward downwards along the side wall of the second packing holder, the second sealing ring is made to be fitted closely with conducting rod, the second sealing ring
Play the role of better seal, improve the sealing effect of transformer oil pump outlet.
In a kind of outgoing line sealing structure of above-mentioned transformer oil pump, the conducting rod is bolt, and the fastener is
Nut, the head of the conducting rod are located in the pump housing, and the fastener is set in the bar portion of conducting rod, by screwing fastener
It is fixedly connected with interior locating piece, outer locating piece, conducting rod and the pump housing.Bolts and nuts are inherently made of metal material, and are had
Conductive effect, reasonable design；And by the cooperation of bolts and nuts, by tightening nut make interior locating piece, outer locating piece,
Conducting rod is fixedly connected with the pump housing, and it is convenient to be connected, and firmness is high.
In a kind of outgoing line sealing structure of above-mentioned transformer oil pump, pad is set between the conducting rod and interior locating piece
Piece, the lead-out wire part is between conducting rod and gasket.Lead-out wire part leads between gasket and the head of conducting rod
The head for crossing gasket and conducting rod compresses lead-out wire, will not fall off lead-out wire, and the firmness of lead-out wire installation is high, safety
It can be good.
In a kind of outgoing line sealing structure of above-mentioned transformer oil pump, the interior locating piece, outer locating piece and compact heap
It is made of plastics or rubber material.Interior locating piece, outer locating piece and compact heap are good insulating bodies.
Compared with prior art, the outgoing line sealing structure of transformer oil pump provided by the invention has the following advantages：
1st, the outgoing line sealing structure of this transformer oil pump is used as the first resealing by the first sealing ring and the second sealing ring,
Casting glue, by dual-seal, improves the sealing effect of transformer oil pump outlet, makes to leak at this as the second resealing
Oil；And the filling of casting glue, make to be fixed in the pump housing with the lead-out wire that conducting rod inner end is connected, lead-out wire and lead-out wire it
Between, the distance between lead-out wire and the pump housing will not change, i.e., lead-out wire will not be in contact with lead-out wire and the pump housing, will not be caused
Insulation resistance is too low, will not be short-circuit, so as to improve the safety of transformer oil pump.
2nd, the interior positioning block portion of this transformer oil pump outgoing line sealing structure point is located in wiring hole, and interior locating piece plays positioning
The effect of conducting rod, interior locating piece ensure that conducting rod will not be in contact with the pump housing, improve the safety of transformer oil pump.
3rd, the outgoing line sealing structure of this transformer oil pump makes interior positioning by the cooperation of screw bolt and nut by rotating nuts
Block, outer locating piece, conducting rod and the pump housing are fixedly connected with, and convenient, the connected firmness that is connected is high.
Description of the drawings
Fig. 1 is the overall structure diagram of this transformer oil pump outgoing line sealing structure.
In figure, 1, the pump housing；2nd, wiring hole；3rd, conducting rod；31st, head；32nd, bar portion；4th, outer locating piece；5th, interior locating piece；
51st, annular shoulder block；6th, fastener；7th, the first sealing ring；8th, the second sealing ring；9th, lead-out wire；10th, casting glue；11st, groove；12、
First packing holder；13rd, the second packing holder；14th, compact heap；15th, gasket.
Specific embodiment
The following is specific embodiments of the present invention and with reference to attached drawing, technical scheme of the present invention is further described,
But the present invention is not limited to these embodiments.
As shown in Figure 1, transformer oil pump includes the pump housing 1, there is wiring hole 2 on the pump housing 1, this outgoing line sealing structure, which is located at, to be connect
At string holes 2.This outgoing line sealing structure includes conducting rod 3, outer locating piece 4, interior locating piece 5, fastener 6, the first sealing ring 7, the
Two sealing rings 8, casting glue 10, compact heap 14 and gasket 15.
Interior locating piece 5, outer locating piece 4 and compact heap 14 are made of insulating materials, interior locating piece 5, outer in the present embodiment
Locating piece 4 and compact heap 14 are made of plastic material, in actual production, interior locating piece 5, outer locating piece 4 and compact heap 14
It can be made of rubber material.Outer locating piece 4 is located at the outside of the pump housing 1, and interior locating piece 5 is located at the inside of the pump housing 1, interior positioning
There is annular shoulder block 51 on the lateral wall of block 5, interior 5 part of locating piece is located in wiring hole 2, and in the part locating piece 5 outside
The side wall of side wall and wiring hole 2 fits, and annular shoulder block 51 is resisted against on the pump housing 1.There is groove 11 on the lateral wall of the pump housing 1,
Outer 4 part of locating piece is located in groove 11, and the bottom of outer locating piece 4 is resisted against the bottom of groove 11, the bottom tool of outer locating piece 4
There is the first packing holder 12, the first sealing ring 7 is located in the first packing holder 12, and the inside at outer 4 top of locating piece has second
Packing holder 13, the sidewall slope setting of the second packing holder 13, the second sealing ring 8 are located in the second packing holder 13.
In the present embodiment, conducting rod 3 is bolt, and fastener 6 is nut, and the head 31 of conducting rod 3 is located in the pump housing 1, tightly
Firmware 6 is set in the bar portion 32 of conducting rod 3, and conducting rod 3 passes through interior locating piece 5, wiring hole 2, outer locating piece 4 and compact heap
14, it is fixedly connected with interior locating piece 5, outer locating piece 4, compact heap 14, conducting rod 3 and the pump housing 1 by screwing fastener 6, after being connected
Between conducting rod 3 and the pump housing 1 there is gap, there is space between interior locating piece 5 and outer locating piece 4.When screwing fastener 6, the
Two sealing rings 8 inwardly squeeze downwards under the action of compact heap 14, so as to which the second sealing ring 8 be made to be formed preferably with conducting rod 3
Sealing.
The inner end that conducting rod 3 is located in the pump housing 1 is connected with lead-out wire 9, and gasket is set between conducting rod 3 and interior locating piece 5
15,9 part of lead-out wire is located between the head 31 of conducting rod 3 and gasket 15, and when fastener 6 is locked, lead-out wire 9 is by conducting rod
3 head 31 is clamped with gasket 15.Filled with casting glue 10 at 3 inner end of conducting rod in the pump housing 1, casting glue 10 makes and conduction
The lead-out wire 9 that 3 inner end of bar is connected is fixed in the pump housing 1, and casting glue 10 blocks the pump housing 1, interior locating piece 5, conducting rod 3, gasket 15
The mutual gap with lead-out wire 9, casting glue 10 play the role of fixed lead-out wire 9 and sealing outlet.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Although the pump housing 1, wiring hole 2, conducting rod 3, head 31, bar portion 32, outer locating piece 4, ring is used more herein
Shape shoulder block 51, interior locating piece 5, fastener 6, the first sealing ring 7, the second sealing ring 8, lead-out wire 9, casting glue 10, groove 11,
The terms such as one packing holder 12, the second packing holder 13, compact heap 14, gasket 15, but be not precluded using other terms can
It can property.The use of these items is only for more easily describe and explain the essence of the present invention；It is construed as any one
The additional limitation of kind is all disagreed with spirit of the present invention.
Claims (8)
1. a kind of outgoing line sealing structure of transformer oil pump, transformer oil pump includes the pump housing (1), has on the pump housing (1) and connects
String holes (2), the outgoing line sealing structure includes conducting rod (3), outer locating piece (4), interior locating piece (5) and fastener (6), described
Interior locating piece (5) and outer locating piece (4) are made of insulating materials, and the outer locating piece (4) is positioned at the outside of the pump housing (1), institute
Interior locating piece (5) is stated positioned at the inside of the pump housing (1), the conducting rod (3) is across interior locating piece (5), wiring hole (2) and outer positioning
Block (4) is fixedly connected with interior locating piece (5), outer locating piece (4), conducting rod (3) and the pump housing (1) by fastener (6), described to lead
Between electric pole (3) and the pump housing (1) there is gap, the first sealing ring (7), institute are equipped between the outer locating piece (4) and the pump housing (1)
It states inner end of the conducting rod (3) in the pump housing (1) and is connected with lead-out wire (9), which is characterized in that the outer locating piece (4) is with leading
The second sealing ring (8) is equipped between electric pole (3), there is space between the interior locating piece (5) and outer locating piece (4)；The pump
Make and conducting rod (3) inner end phase filled with casting glue (10), the casting glue (10) at conducting rod (3) inner end in body (1)
Lead-out wire (9) even is fixed in the pump housing (1), and the casting glue (10) blocks the pump housing (1), interior locating piece (5), conducting rod (3)
The mutual gap with lead-out wire (9).
A kind of 2. outgoing line sealing structure of transformer oil pump according to claim 1, which is characterized in that the interior locating piece
(5) there is annular shoulder block (51), the interior locating piece (5) is partly located in wiring hole (2), and the part is default on lateral wall
The side wall of the lateral wall and wiring hole (2) of position block (5) fits, and the annular shoulder block (51) is resisted against on the pump housing (1).
A kind of 3. outgoing line sealing structure of transformer oil pump according to claim 1, which is characterized in that the pump housing (1)
Lateral wall on have groove (11), the outer locating piece (4) partly be located at groove (11) in, the bottom of the outer locating piece (4)
Portion is resisted against the bottom of groove (11).
4. the outgoing line sealing structure of a kind of transformer oil pump according to claims 1 or 2 or 3, which is characterized in that described outer
The bottom of locating piece (4) has the first packing holder (12), and first sealing ring (7) is in the first packing holder (12).
5. the outgoing line sealing structure of a kind of transformer oil pump according to claims 1 or 2 or 3, which is characterized in that described outer
Inside at the top of locating piece (4) has the second packing holder (13), and the sidewall slope of second packing holder (13) is set, institute
The second sealing ring (8) is stated in the second packing holder (13), pressure is provided between the outer locating piece (4) and fastener (6)
Tight block (14).
6. the outgoing line sealing structure of a kind of transformer oil pump according to claims 1 or 2 or 3, which is characterized in that described to lead
Electric pole (3) is bolt, and the fastener (6) is nut, and the head (31) of the conducting rod (3) is described tight in the pump housing (1)
Firmware (6) is set in the bar portion (32) of conducting rod (3), makes interior locating piece (5), outer locating piece by screwing fastener (6)
(4), conducting rod (3) is fixedly connected with the pump housing (1).
7. the outgoing line sealing structure of a kind of transformer oil pump according to claims 1 or 2 or 3, which is characterized in that described to lead
Gasket (15) is set between electric pole (3) and interior locating piece (5), and the lead-out wire (9) is partly located at conducting rod (3) and gasket (15)
Between.
A kind of 8. outgoing line sealing structure of transformer oil pump according to claim 5, which is characterized in that the interior locating piece
(5), outer locating piece (4) and compact heap (14) are made of plastics or rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610294104.7A CN105743270B (en) | 2016-05-04 | 2016-05-04 | A kind of outgoing line sealing structure of transformer oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610294104.7A CN105743270B (en) | 2016-05-04 | 2016-05-04 | A kind of outgoing line sealing structure of transformer oil pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105743270A CN105743270A (en) | 2016-07-06 |
| CN105743270B true CN105743270B (en) | 2018-07-03 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610294104.7A Active CN105743270B (en) | 2016-05-04 | 2016-05-04 | A kind of outgoing line sealing structure of transformer oil pump |
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| CN (1) | CN105743270B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100213A (en) * | 2016-08-29 | 2016-11-09 | 上海特波电机有限公司 | High leakproofness connection box for motor |
| CN106329788A (en) * | 2016-08-31 | 2017-01-11 | 无锡太昌精密机械有限公司 | Connection structure of motor cover and motor base |
| CN107104542A (en) * | 2017-06-20 | 2017-08-29 | 东阳市联宜机电有限公司 | Carbon brush leading-out wire fixing structure |
| CN107181352A (en) * | 2017-06-20 | 2017-09-19 | 东阳市联宜机电有限公司 | Direct current generator terminals insulation system |
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| US6280208B1 (en) * | 1999-04-07 | 2001-08-28 | Yazaki Corporation | Shield connector structure |
| CN2757409Y (en) * | 2004-07-13 | 2006-02-08 | 衡阳市朝阳泵业有限公司 | Water-proof seal device of submerged motor line joint |
| CN201663510U (en) * | 2009-11-12 | 2010-12-01 | 重庆德马变频电机研发制造有限公司 | Lead wire sealing device |
| CN204068531U (en) * | 2014-09-05 | 2014-12-31 | 中州华起电机有限公司 | A kind of fire-proof motor outlet structure |
| CN204538871U (en) * | 2015-02-10 | 2015-08-05 | 江苏亚力防爆电机有限公司 | A kind of stove connection box for motor |
| CN205610402U (en) * | 2016-05-04 | 2016-09-28 | 浙江尔格科技股份有限公司 | Seal structure that is qualified for next round of competitions of transformer oil pump |
-
2016
- 2016-05-04 CN CN201610294104.7A patent/CN105743270B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6280208B1 (en) * | 1999-04-07 | 2001-08-28 | Yazaki Corporation | Shield connector structure |
| CN2757409Y (en) * | 2004-07-13 | 2006-02-08 | 衡阳市朝阳泵业有限公司 | Water-proof seal device of submerged motor line joint |
| CN201663510U (en) * | 2009-11-12 | 2010-12-01 | 重庆德马变频电机研发制造有限公司 | Lead wire sealing device |
| CN204068531U (en) * | 2014-09-05 | 2014-12-31 | 中州华起电机有限公司 | A kind of fire-proof motor outlet structure |
| CN204538871U (en) * | 2015-02-10 | 2015-08-05 | 江苏亚力防爆电机有限公司 | A kind of stove connection box for motor |
| CN205610402U (en) * | 2016-05-04 | 2016-09-28 | 浙江尔格科技股份有限公司 | Seal structure that is qualified for next round of competitions of transformer oil pump |
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| Publication number | Publication date |
|---|---|
| CN105743270A (en) | 2016-07-06 |
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| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Outgoing line sealing structure of transformer oil pump Effective date of registration: 20210808 Granted publication date: 20180703 Pledgee: China Construction Bank Corporation Sanmen sub branch Pledgor: ZHEJIANG ERG TECHNOLOGY JOINT STOCK Co.,Ltd. Registration number: Y2021330001100 |
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| PC01 | Cancellation 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: 20230822 Granted publication date: 20180703 Pledgee: China Construction Bank Corporation Sanmen sub branch Pledgor: ZHEJIANG ERG TECHNOLOGY JOINT STOCK CO.,LTD. Registration number: Y2021330001100 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Sealing Structure for Outgoing Line of Transformer Oil Pump Effective date of registration: 20230824 Granted publication date: 20180703 Pledgee: China Construction Bank Corporation Sanmen sub branch Pledgor: ZHEJIANG ERG TECHNOLOGY JOINT STOCK CO.,LTD. Registration number: Y2023330001840 |