CN108962554A - A method of improving transformer service life - Google Patents
A method of improving transformer service life Download PDFInfo
- Publication number
- CN108962554A CN108962554A CN201810785581.2A CN201810785581A CN108962554A CN 108962554 A CN108962554 A CN 108962554A CN 201810785581 A CN201810785581 A CN 201810785581A CN 108962554 A CN108962554 A CN 108962554A
- Authority
- CN
- China
- Prior art keywords
- transformer
- sleeve
- support column
- sliding axle
- cooling fin
- 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
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 66
- 239000000428 dust Substances 0.000 claims description 6
- 241000251468 Actinopterygii Species 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention belongs to transformer technology fields, specifically a kind of method for improving transformer service life, the transformer that this method makes includes transformer-cabinet, cooling fin, support plate, bottom plate, connecting rod and supporting module, connecting rod one end is mounted on support plate edge, the connecting rod other end is connected to supporting module, and supporting module is located between two cooling fins；Supporting module includes sleeve, hinged seat, sliding axle and support column；Sleeve is mounted on transformer tank body sidewall by hinged seat, and sliding axle is axially arranged in sleeve；Sleeve is arranged radially two support columns, and support column is slidably connected with sleeve, and cricoid arc groove is equipped in the middle part of sliding axle, and sliding shaft end head is connected with connecting rod.When connecting rod generates larger pulling force, sliding axle slides and support column is bounced back into sleeve the present invention, and support column is detached from the support to cooling fin, can be avoided the deformation of cooling fin, improves the structural strength of transformer.
Description
Technical field
The invention belongs to transformer technology field, specifically a kind of method for improving transformer service life.
Background technique
Transformer generally comprises cabinet, and cabinet includes several tank walls, during the work time due to transformer, can generate a large amount of
Heat, seriously affect the performance of transformer, generally in order to reduce the heat in transformer, heat dissipation be provided on the outside of tank wall
Piece.Cooling fin can disperse the heat in transformer, but in the case where temperature is excessively high, will lead to cooling fin and be difficult to restore shape
Become, or even will appear crackle, transformer is damaged therefrom, needs to repair, and transformer will affect work in external shock
Make, while influencing service life.
Also occurs the technical solution of some transformers in the prior art, such as application No. is one of 2016111762489
Chinese patent discloses a kind of damping transformer, including cabinet, and surrounding is fixed with several cooling fins, cooling fin two sides on the outside of cabinet
It is respectively equipped with bar shaped fluting, it further includes damper, damper that fluting, which extends to cooling fin geometric center position at the top of cooling fin,
It is placed in support plate including the bottom plate for being parallel to each other and being connected by damping spring and support plate, the bottom of box, is set in support plate
Have several connecting holes, further include the cushion block of several band connection bars, cushion block tool there are two supporting surface, cushion block be placed in abutting fins it
Between, and to slide into cooling fin geometric center position corresponding for the slotted top cooperation mutually stood erect from abutting fins respectively of cushion block both ends
Fluting bottom end, and supporting surface offsets with fluting slot bottom respectively, and connecting rod passes through connecting hole and support plate far from one end of cushion block
It is fixed.
The technical solution can be improved the integral strength of transformer, and can be supported to cooling fin, reduce heat dissipation
The deformation of piece；But the program will cause fin version in filter vibration, so that the technical solution is lacked there are biggish
It falls into, the service life of transformer is caused not grow.
Summary of the invention
In order to make up for the deficiencies of the prior art, a kind of method improving transformer service life proposed by the present invention, the party
The transformer that method makes by design sliding axle, when connecting rod generate larger pulling force when, sliding axle slide and make support column to
Retraction in sleeve, support column are detached from the support to cooling fin, can be avoided the deformation of cooling fin, the structure for improving transformer is strong
Degree.
The technical solution adopted by the present invention to solve the technical problems is: a kind of raising transformer use of the present invention
The method in service life, method includes the following steps:
Step 1: transformer is mounted in power distribution room；
Step 2: dust cover is installed in the power distribution room of step 1, prevents dust from entering in transformer；
Step 3: auto temperature controlled system is installed in the power distribution room of step 2, is cooled down to transformer；
Step 4: being arranged data acquisition module in the power distribution room of step 3, monitors the data of transformer on-line, calculates
Transformer expected service life formulates maintenance plan for service personnel and provides foundation；
Wherein, the transformer includes transformer-cabinet, cooling fin, support plate, bottom plate, connecting rod and supporting module,
Surrounding is fixed with several cooling fins on the outside of the transformer-cabinet, and the cooling fin two sides are respectively equipped with bar shaped fluting, and
Fluting extends to cooling fin geometric center position at the top of cooling fin, and the transformer-cabinet bottom is placed in support plate, institute
It states support plate and bottom plate is mounted on by damper, described connecting rod one end is mounted on support plate edge, the connecting rod other end
It is connected to supporting module, the supporting module is located between two cooling fins；The supporting module includes sleeve, hinged seat, cunning
Moving axis and support column；The sleeve is mounted on transformer tank body sidewall by hinged seat, axially setting sliding in the sleeve
Axis；The sleeve is arranged radially two support columns, and the support column is slidably connected with sleeve, and ring-type is equipped in the middle part of the sliding axle
Arc groove, the sliding shaft end head is connected with connecting rod.When transformer encounters impact and shakes, in order to avoid connecting rod pulling
Cooling fin makes fin version, and this case is by design sliding axle, and when connecting rod generates larger pulling force, sliding axle slides and makes
It obtains support column to bounce back into sleeve, support column is detached from the support to cooling fin, can be avoided the deformation of cooling fin, improves transformation
The structural strength of device.
Preferably, one end of the support column contact slide axis is set as hemispherical, and the radius of the arc groove is greater than support
The radius of styletable head shoot.Enable support column is gentle to slide into the middle part of arc groove.
Preferably, support column setting sliding block is corresponded on the sliding axle, the sliding block is slidably mounted in sliding axle axial direction
Skewed slot in, support column pressure touching is on sliding block.When support column bounces back into sleeve, radial direction pressure of the support column to sliding axle
The resultant force of power and the axial tension of sliding axle drives sliding block to slide along skewed slot, can reduce the resistance that sliding axle is subject to, and improves machine
The sensitivity of structure.
Preferably, the support column end is equipped with and the V-arrangement non-slip groove that is mutually engaged on sliding block, the non-slip groove and quill
To perpendicular.Increase the frictional force between support column and sliding block, enable support column and sliding block synchronizing moving, improves mechanism
Sensitivity.
Preferably, the support column is slidably mounted in the mounting cylinder of sleeve side setting, and the mounting cylinder and sleeve turn
Dynamic connection.In connecting rod under tension, while retraction with support column, mounting cylinder also generates rotation, further avoids
Cooling fin is guaranteed the stability of cooling fin by being influenced.
Preferably, the sliding axle of the arc trench bottom is equipped with the rubber mat of a circle fish scale-shaped, and the rubber mat and sleeve are not
Contact, the rubber mat and sliding axle tilt.Firstly, pulling lower slider of the sliding axle in connecting rod, rubber mat touch support column
And resistance is generated to support column, it drives mounting cylinder to rotate, further avoids the influence that cooling fin is subject to, guarantee the steady of cooling fin
It is qualitative；Then when sliding axle is replied, since rubber mat is tilted to the other side, the resistance of support column is reduced, column easy to support
Quick-return, improve the sensitivity of mechanism, heat sink supported again in time, guarantee the stability of cooling fin.
Preferably, the rubber mat and sliding axle angle are set as 1-2 °.
Beneficial effects of the present invention are as follows:
1. a kind of method of raising transformer service life of the invention, the transformer that this method makes passes through design sliding
Axis, when connecting rod generates larger pulling force, sliding axle slides and support column is bounced back into sleeve, and support column is detached to heat dissipation
The support of piece can be avoided the deformation of cooling fin, improve the structural strength of transformer.
2. a kind of method of raising transformer service life of the invention, the transformer that this method makes is slided by setting
Block, support column drive sliding block to slide along skewed slot the resultant force of the radial pressure of sliding axle and the axial tension of sliding axle, can subtract
The resistance that small sliding axle is subject to improves the sensitivity of mechanism.
3. a kind of method of raising transformer service life of the invention, the transformer that this method makes can by setting
The mounting cylinder of rotation, in connecting rod under tension, while retraction with support column, mounting cylinder also generates rotation, further
The influence that cooling fin is subject to is avoided, guarantees the stability of cooling fin.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings.
Fig. 1 is flow chart of the method for the present invention；
Fig. 2 is the structure chart of transformer of the present invention；
Fig. 3 is the first structure chart of supporting module of the present invention；
Fig. 4 is second of structure chart of supporting module of the present invention；
Fig. 5 is the partial enlarged view in Fig. 4 at A；
In figure: transformer-cabinet 1, cooling fin 2, support plate 3, bottom plate 4, connecting rod 5, supporting module 6, sleeve 61, hinged
Seat 62, sliding axle 63, support column 64, arc groove 65, sliding block 7, skewed slot 71, mounting cylinder 8, rubber mat 9.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment is closed, the present invention is further explained.
As shown in Figures 1 to 5, it is of the present invention it is a kind of improve transformer service life method, this method include with
Lower step:
Step 1: transformer is mounted in power distribution room；
Step 2: dust cover is installed in the power distribution room of step 1, prevents dust from entering in transformer；
Step 3: auto temperature controlled system is installed in the power distribution room of step 2, is cooled down to transformer；
Step 4: being arranged data acquisition module in the power distribution room of step 3, monitors the data of transformer on-line, calculates
Transformer expected service life formulates maintenance plan for service personnel and provides foundation；
Wherein, the transformer includes transformer-cabinet 1, cooling fin 2, support plate 3, bottom plate 4, connecting rod 5 and support
Module 6, the 1 outside surrounding of transformer-cabinet are fixed with several cooling fins 2, and 2 two sides of cooling fin are respectively equipped with item
Shape fluting, and slot and extend to 2 geometric center position of cooling fin at the top of cooling fin, 1 bottom of transformer-cabinet is placed in
In support plate 3, the support plate 3 is mounted on bottom plate 4 by damper, and described 5 one end of connecting rod is mounted on 3 edge of support plate,
5 other end of connecting rod is connected to supporting module 6, and the supporting module 6 is located between two cooling fins 2；The branch hold mode
Block 6 includes sleeve 61, hinged seat 62, sliding axle 63 and support column 64；The sleeve 61 is mounted on transformer by hinged seat 62
On 1 side wall of cabinet, sliding axle 63 is axially set in the sleeve 61；The sleeve 61 is arranged radially two support columns 64, described
Support column 64 is slidably connected with sleeve 61, and cricoid arc groove 65,63 end of sliding axle are equipped in the middle part of the sliding axle 63
It is connected with connecting rod 5.When transformer encounters impact and shakes, in order to avoid connecting rod 5 pulls cooling fin 2 cooling fin 2 is become
Shape, by design sliding axle 63, when connecting rod 5 generates larger pulling force, support column 64 bounces back into sleeve 61, avoids dissipating for this case
The deformation of backing 2.
In the prior art by the way that lip block is arranged between two cooling fins, the deformation of cooling fin can be avoided, and lead to
Pull rod connection lip block is crossed, pull rod is connected with damper, so that damper and transformer tank physical efficiency are linked together, can be enhanced whole
The intensity of body.But when transformer-cabinet generates lateral deviation, pull rod and lip block will cause the deformation of cooling fin, cause the change
The structural strength of depressor is insufficient.
In order to avoid connecting rod 5 pulls cooling fin 2 cooling fin 2 is deformed, this case works as connection by design sliding axle 63
When bar 5 generates larger pulling force, sliding axle 63 slides and support column 64 is bounced back into sleeve 61, and support column 64 is detached to heat dissipation
The support of piece 2 can be avoided the deformation of cooling fin 2, improve the structural strength of transformer.
As one embodiment of the present invention, one end of the 64 contact slide axis 63 of support column is set as hemispherical, institute
The radius for stating arc groove 65 is greater than the radius of 64 end ball of support column.Enable support column 64 is gentle to slide into arc groove 65
Portion.
As one embodiment of the present invention, support column 64 is corresponded on the sliding axle 63, sliding block 7, the sliding block are set
7 are slidably mounted in the skewed slot 71 in 63 axial direction of sliding axle, and the pressure of support column 64 touching is on sliding block 7.In support column 64 to set
In cylinder 61 when retraction, support column 64 drives sliding block 7 to the resultant force of the radial pressure of sliding axle 63 and the axial tension of sliding axle 63
It is slided along skewed slot 71, the resistance that sliding axle 63 is subject to can be reduced, improve the sensitivity of mechanism.
As one embodiment of the present invention, 64 end of support column is equipped with anti-skidding with the V-arrangement being mutually engaged on sliding block 7
Slot, the non-slip groove and sleeve 61 are axial perpendicular.Increase the frictional force between support column 64 and sliding block 7, so that support column 64
With sliding block 7 can synchronizing moving, improve the sensitivity of mechanism.
As one embodiment of the present invention, the support column 64 is slidably mounted on the mounting cylinder of 61 side of sleeve setting
In 8, the mounting cylinder 8 and sleeve 61 are rotatablely connected.In 5 under tension of connecting rod, while retraction with support column 64, peace
Fitted tube 8 also generates rotation, further avoids the influence that cooling fin 2 is subject to, and guarantees the stability of cooling fin 2.
As one embodiment of the present invention, the sliding axle 63 of 65 bottom of arc groove is equipped with a circle fish scale-shaped
Rubber mat 9, the rubber mat 9 are not contacted with sleeve 61, and the rubber mat 9 and sliding axle 63 tilt.Firstly, sliding axle 63 is in connecting rod
5 pulling lower slider, rubber mat 9 touch support column 64 and generate resistance to support column 64, drive mounting cylinder 8 to rotate, further
The influence that cooling fin 2 is subject to is avoided, guarantees the stability of cooling fin 2；Then sliding axle 63 reply when, due to rubber mat 9 to
Other side inclination reduces the resistance of support column 64, and the Quick-return of column 64 easy to support improves the sensitivity of mechanism, and
When heat sink 2 is supported again, guarantee cooling fin 2 stability.
As one embodiment of the present invention, the rubber mat 9 and 63 angle of sliding axle are set as 1-2 °.
When transformer encounters impact and shakes, in order to avoid connecting rod 5 pulls cooling fin 2 cooling fin 2 is deformed, this case
By designing sliding axle 63, when connecting rod 5 generates larger pulling force, sliding axle 63 slides and makes support column 64 into sleeve 61
Retraction, support column 64 are detached from the support to cooling fin 2, can be avoided the deformation of cooling fin 2, the structure for improving transformer is strong
Degree；Further, by support column 64 be arranged to rotation, in 5 under tension of connecting rod, with support column 64 bounce back it is same
When, mounting cylinder 8 also generates rotation, further avoids the influence that cooling fin 2 is subject to, and guarantees the stability of cooling fin 2；Meanwhile
Sliding axle 63 connecting rod 5 pulling lower slider, rubber mat 9 touch support column 64 and to support column 64 generate resistance, drive peace
Fitted tube 8 rotates, and further avoids the influence that cooling fin 2 is subject to, and guarantees the stability of cooling fin 2；Then returned in sliding axle 63
When multiple, since rubber mat 9 is tilted to the other side, the resistance of support column 64 is reduced, the Quick-return of column 64 easy to support improves
The sensitivity of mechanism in time supports heat sink 2 again, guarantees the stability of cooling fin 2.
Although the present invention be illustrated by specific embodiment, it will be appreciated by those skilled in the art that, do not departing from
In the case where the scope of the invention, various transformation and equivalent substitute can also be carried out to the present invention.In addition, being directed to particular condition or material
Material, can do various modifications to the present invention, without departing from the scope of the present invention.Therefore, the present invention is not limited to disclosed tool
Body embodiment, and should include the whole embodiments fallen within the scope of the appended claims.
Claims (7)
1. a kind of method for improving transformer service life, which is characterized in that method includes the following steps:
Step 1: transformer is mounted in power distribution room；
Step 2: dust cover is installed in the power distribution room of step 1, prevents dust from entering in transformer；
Step 3: auto temperature controlled system is installed in the power distribution room of step 2, is cooled down to transformer；
Step 4: being arranged data acquisition module in the power distribution room of step 3, monitors the data of transformer on-line；
Wherein, the transformer includes transformer-cabinet (1), cooling fin (2), support plate (3), bottom plate (4), connecting rod (5)
With supporting module (6), the transformer-cabinet (1) outside surrounding is fixed with several cooling fins (2), the cooling fin (2)
Two sides are respectively equipped with bar shaped fluting, and slot and extend to cooling fin (2) geometric center position, the transformation at the top of cooling fin
Device cabinet (1) bottom is placed on support plate (3), and the support plate (3) is mounted on bottom plate (4), the connecting rod by damper
(5) one end is mounted on support plate (3) edge, and connecting rod (5) other end is connected to supporting module (6), the supporting module
(6) it is located between two cooling fins (2)；The supporting module (6) include sleeve (61), hinged seat (62), sliding axle (63) and
Support column (64)；The sleeve (61) is mounted on transformer-cabinet (1) side wall by hinged seat (62), in the sleeve (61)
Axial setting sliding axle (63)；The sleeve (61) is arranged radially two support columns (64), the support column (64) and sleeve
(61) it is slidably connected, cricoid arc groove (65), sliding axle (63) end and connection is equipped in the middle part of the sliding axle (63)
Bar (5) is connected.
2. a kind of method for improving transformer service life according to claim 1, it is characterised in that: the support column
(64) one end of contact slide axis (63) is set as hemispherical, and the radius of the arc groove (65) is greater than support column (64) end ball
Radius.
3. a kind of method for improving transformer service life according to claim 1, it is characterised in that: the sliding axle
(63) support column (64) setting sliding block (7) is corresponded on, the sliding block (7) is slidably mounted on the skewed slot in sliding axle (63) axial direction
(71) in, support column (64) the pressure touching is on sliding block (7).
4. a kind of method for improving transformer service life according to claim 3, it is characterised in that: the support column
(64) end is equipped with and the V-arrangement non-slip groove that is mutually engaged on sliding block (7), the non-slip groove and sleeve (61) axial direction are perpendicular.
5. a kind of method for improving transformer service life according to claim 1, it is characterised in that: the support column
(64) it is slidably mounted in the mounting cylinder (8) of sleeve (61) side setting, the mounting cylinder (8) and sleeve (61) rotation connection.
6. a kind of method for improving transformer service life according to claim 5, it is characterised in that: the arc groove
(65) sliding axle (63) of bottom is equipped with the rubber mat (9) of a circle fish scale-shaped, and the rubber mat (9) does not contact with sleeve (61), institute
It states rubber mat (9) and sliding axle (63) tilts.
7. a kind of method for improving transformer service life according to claim 6, it is characterised in that: the rubber mat (9)
1-2 ° is set as with sliding axle (63) angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810785581.2A CN108962554B (en) | 2018-07-17 | 2018-07-17 | A method of improving transformer service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810785581.2A CN108962554B (en) | 2018-07-17 | 2018-07-17 | A method of improving transformer service life |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108962554A true CN108962554A (en) | 2018-12-07 |
| CN108962554B CN108962554B (en) | 2019-10-08 |
Family
ID=64481538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810785581.2A Active CN108962554B (en) | 2018-07-17 | 2018-07-17 | A method of improving transformer service life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108962554B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2550459Y (en) * | 2002-07-19 | 2003-05-14 | 赵明桥 | Anti-prick lock for multiple door and window |
| JP2007106318A (en) * | 2005-10-14 | 2007-04-26 | Honda Motor Co Ltd | Vehicular pedal device |
| CN204947365U (en) * | 2015-09-29 | 2016-01-06 | 山东森源电力实业有限公司 | Transformer substation |
| CN105345830A (en) * | 2015-12-15 | 2016-02-24 | 清华大学 | Sucker type manipulator |
| CN106449030A (en) * | 2016-12-19 | 2017-02-22 | 乔兴友 | Shock-absorption transformer |
| CN107716565A (en) * | 2017-09-11 | 2018-02-23 | 马鞍山市方圆材料工程有限公司 | A kind of roller interval adjustable rolling guide |
-
2018
- 2018-07-17 CN CN201810785581.2A patent/CN108962554B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2550459Y (en) * | 2002-07-19 | 2003-05-14 | 赵明桥 | Anti-prick lock for multiple door and window |
| JP2007106318A (en) * | 2005-10-14 | 2007-04-26 | Honda Motor Co Ltd | Vehicular pedal device |
| CN204947365U (en) * | 2015-09-29 | 2016-01-06 | 山东森源电力实业有限公司 | Transformer substation |
| CN105345830A (en) * | 2015-12-15 | 2016-02-24 | 清华大学 | Sucker type manipulator |
| CN106449030A (en) * | 2016-12-19 | 2017-02-22 | 乔兴友 | Shock-absorption transformer |
| CN107716565A (en) * | 2017-09-11 | 2018-02-23 | 马鞍山市方圆材料工程有限公司 | A kind of roller interval adjustable rolling guide |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108962554B (en) | 2019-10-08 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190904 Address after: 311800 No. 9 Jiang Shangcun, Datang Town, Zhuji City, Shaoxing City, Zhejiang Province Applicant after: Chen Xing Address before: 523696 Dongguan Zhenhua New Energy Technology Co., Ltd. No. 7 Xingyuan Road, Yuquan Industrial Zone, Fenggang Town, Dongguan City, Guangdong Province Applicant before: Ma Kewen |
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| TR01 | Transfer of patent right |
Effective date of registration: 20201203 Address after: 261500 Shandong city of Weifang province Gaomi City high tech Industrial Development Zone (Liquan Street East) Patentee after: SHANDONG RUIGUANG ELECTRONIC ENGINEERING TECHNOLOGY Co.,Ltd. Address before: 311800 No. 9 Jiang Shangcun, Datang Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: Chen Xing |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Method for improving service life of transformer Effective date of registration: 20220217 Granted publication date: 20191008 Pledgee: Shandong Gaomi rural commercial bank Limited by Share Ltd. Pledgor: SHANDONG RUIGUANG ELECTRONIC ENGINEERING TECHNOLOGY CO.,LTD. Registration number: Y2022980001632 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |