CN110504084A - A kind of heat radiation type dry-type transformer and its on-line early warning system - Google Patents
A kind of heat radiation type dry-type transformer and its on-line early warning system Download PDFInfo
- Publication number
- CN110504084A CN110504084A CN201810477484.7A CN201810477484A CN110504084A CN 110504084 A CN110504084 A CN 110504084A CN 201810477484 A CN201810477484 A CN 201810477484A CN 110504084 A CN110504084 A CN 110504084A
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- Prior art keywords
- fixedly connected
- cabinet
- positive
- dry
- shaft
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- 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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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- 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
-
- 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
- H01F27/02—Casings
-
- 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
- H01F27/02—Casings
- H01F27/025—Constructional details relating to cooling
-
- 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
- H01F27/085—Cooling by ambient air
-
- 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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- 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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- 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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a kind of heat radiation type dry-type transformer and its on-line early warning systems, including bottom plate, the top of the bottom plate is arranged symmetrically, and there are two support bases, the top of two support bases is fixedly connected by cabinet, the midpoint of the top of the box is fixedly connected with positive and negative motor, is fixedly connected with positive and negative shaft on the output shaft of the positive and negative motor.The present invention is cooperated by positive and negative motor, positive and negative shaft, radiator shutter, rolling bearing, threaded rod, first bevel gear, second bevel gear, thread bush, thermovent, shaft, fixed link, impact hammer, rope and ventilation opening, play the role of good heat dissipation effect, the cleaning of discontinuity can be carried out to the dust on Air Filter, it avoids because dust bulk deposition causes heat caused by box house dry-type transformer ontology that can not be discharged due on Air Filter the case where, radiating efficiency is improved, the service life of dry-type transformer ontology is extended.
Description
Technical field
The present invention relates to Dry-Transformer Technology field, specially a kind of heat radiation type dry-type transformer and its on-line early warning system
System.
Background technique
Dry-type transformer refers to that the transformer that iron core and winding are not immersed in insulating oil, dry-type transformer are widely used in office
Places, the types of cooling of dry-type transformer such as portion's illumination, skyscraper, airport, harbour CNC mechanical equipment are divided into natural air
Cooling and forced air is cooling, when natural air cooling, transformer can under rated capacity long-term continuous operation, when forced air cooling, become
Depressor output capacity can be improved 50%, be suitable for interrupted running overload or emergent accident running overload；When due to overload
Load loss and impedance voltage amplification are larger, are in non-economy operating status, therefore should not be at continuous overload for a long time
Operation.
Common dry-type transformer heat dissipation effect is undesirable, dust-proof on thermovent inner wall due to running for a long time
A large amount of dust is had accumulated on the net, so that cabinet can not be timely discharged in the heat for being easy to cause dry-type transformer ontology to generate
Outside, its internal radiating efficiency is influenced, the serious curtailment service life of dry-type transformer.
Summary of the invention
The purpose of the present invention is to provide a kind of heat radiation type dry-type transformer and its on-line early warning systems, have heat dissipation effect
Good advantage, solves the problems, such as that common dry-type transformer heat dissipation effect is undesirable；The early warning system passes through analysis transformer
The concentration of composition of gases within judges the heat condition of cabinet in-vivo device, has effectively monitored the equipment operation condition of transformer.
To achieve the above object, the invention provides the following technical scheme: a kind of dry-type transformer of good heat dissipation effect, including
Bottom plate, the top of the bottom plate is arranged symmetrically, and there are two support bases, and the top of two support bases is fixedly connected by cabinet, described
The midpoint of top of the box is fixedly connected with positive and negative motor, is fixedly connected with positive and negative shaft on the output shaft of the positive and negative motor,
The bottom of the positive and negative shaft, which is run through cabinet and extended to, is fixedly connected with radiator shutter inside it, described cabinet wall or so two
The inside grooves of lateral roof are fixedly connected to rolling bearing, and the internal activity of the rolling bearing is connected with threaded rod, described
The one end of threaded rod far from rolling bearing is through rolling bearing and extends to and is fixedly connected with first bevel gear outside it, it is described just
The reversing shaft surface and position of corresponding first bevel gear is fixedly connected with and the intermeshing second bevel gear of first bevel gear, institute
The surface for stating threaded rod is threaded with thread bush, and the bottom of the thread bush is fixedly connected with the first fixed ring, the cabinet
The midpoint of the left and right sides offers thermovent, is fixedly connected with Air Filter on the inner wall of the thermovent, in the cabinet
Position at left and right sides of wall and above corresponding thermovent is fixedly connected with fixed plate, is fixedly connected with and turns on front side of the fixed plate
Axis, the surface activity of the shaft are connected with fixed link, and the bottom of the fixed link is fixedly connected with impact hammer, the fixed link
Top be fixedly connected with the second fixed ring, be fixedly connected between first fixed ring and the second fixed ring by rope, institute
The midpoint for stating the bottom of box offers ventilation opening, the fixed company in the left and right sides of the cabinet wall bottom and corresponding ventilation opening
It is connected to support column, placement plate is fixedly connected at the top of two support columns, dry type change is fixedly connected at the top of the placement plate
Depressor ontology.
Preferably, the threaded rod surface and position between first bevel gear and thread bush is connected with support
Block is fixedly connected at the top of the top of the supporting block and cabinet wall.
Preferably, position of the supporting block above thread bush side and corresponding threaded rod is fixedly connected with flexible
Bar, the telescopic rod are fixedly connected far from one end of supporting block with thread bush.
Preferably, the position of the bottom of box and corresponding ventilation opening is fixedly connected with dust cover.
A kind of on-line early warning system for the acting type dry-type transformer that radiates, including system control host and monitoring terminal, it is described
Monitoring terminal is correspondingly arranged with high-tension switch cabinet and connect with system control host；The monitoring terminal include monitoring unit with
And suction fan connected to it, gas collecting module, temperature sensor and alarm device；Wherein the suction fan is general
To be sampled to gas in transformer；The gas collecting module and temperature sensor acquire the gas in gas pipeline respectively
Body ingredient and temperature data information, and the data information of acquisition is sent to monitoring unit；The monitoring unit is to receiving
Gas componant and temperature data are handled, and data information is sent to system control host by treated, meanwhile, by early warning
Information is sent to alarm device and carries out early warning；The monitoring unit controls host with system by RS485 communication modes and connect,
The system control host is connect by communication network with remote centralized management system.
Compared with prior art, beneficial effects of the present invention are as follows:
1, the present invention passes through positive and negative motor, positive and negative shaft, radiator shutter, rolling bearing, threaded rod, first bevel gear, the second cone
Gear, thread bush, thermovent, fixed plate, shaft, fixed link, impact hammer, rope and ventilation opening cooperate, and play heat dissipation
The good effect of effect can carry out the cleaning of discontinuity to the dust on Air Filter, avoid because dust bulk deposition is dust-proof
The case where causing heat caused by box house dry-type transformer ontology that can not be discharged on the net, improves heat dissipation effect
Rate extends the service life of dry-type transformer ontology.
2, the present invention by setting supporting block, play the role of the Auxiliary support of threaded rod, prevent threaded rod when rotating because
Gravity or external force and shift, by be arranged telescopic rod, the position-limiting action to thread bush is played, when preventing threaded rod from rotating
It follows thread bush to rotate together, by the way that dust cover is arranged, prevents the dust in air from entering box house by ventilation opening.
3, the equipment operation condition of transformer has effectively been monitored by early warning system and has covered the whole in transformer has set
It is standby, so that transformer is realized that comprehensive early warning becomes possibility, but also to guaranteeing that electric power netting safe running plays key effect.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the structure of front view of the present invention；
Fig. 2 is the partial enlarged view of A-A in Fig. 1 of the present invention；
Fig. 3 is early warning system schematic diagram of the invention.
In figure: 1 bottom plate, 2 support bases, 3 cabinets, 4 positive and negative motors, 5 positive and negative shafts, 6 radiator shutters, 7 rolling bearings, 8 spiral shells
Rasp bar, 9 first bevel gears, 10 second bevel gears, 11 thread bush, 12 first fixed rings, 13 thermovents, 14 Air Filters, 15 are fixed
Plate, 16 shafts, 17 fixed links, 18 impact hammers, 19 second fixed rings, 20 ropes, 21 ventilation openings, 22 support columns, 23 placement plates, 24
Dry-type transformer ontology, 25 supporting blocks, 26 telescopic rods, 27 dust covers.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The top of a kind of dry-type transformer of good heat dissipation effect referring to FIG. 1-2, including bottom plate 1, bottom plate 1 is symmetrical arranged
There are two support base 2, the top of two support bases 2 is fixedly connected by cabinet 3, and the midpoint at 3 top of cabinet is fixedly connected with
Positive and negative motor 4, positive and negative shaft 5 is fixedly connected on the output shaft of positive and negative motor 4, and the bottom of positive and negative shaft 5 through cabinet 3 and is prolonged
It extends to and is fixedly connected with radiator shutter 6 inside it, the inside grooves at top are fixedly connected to rolling at left and right sides of 3 inner wall of cabinet
Bearing 7, the internal activity of rolling bearing 7 are connected with threaded rod 8, and threaded rod 8 runs through rolling bearing far from one end of rolling bearing 7
It 7 and extends to outside it and is fixedly connected with first bevel gear 9, the position of positive and negative 5 surface of shaft and corresponding first bevel gear 9 is fixed
Be connected with the intermeshing second bevel gear 10 of first bevel gear 9, the surface of threaded rod 8 is threaded with thread bush 11, spiral shell
8 surface of rasp bar and the position between first bevel gear 9 and thread bush 11 are connected with supporting block 25, the top of supporting block 25
It is fixedly connected at the top of portion and 3 inner wall of cabinet, by the way that supporting block 25 is arranged, plays the role of the Auxiliary support of threaded rod 8, prevent
Threaded rod 8 shifts when rotating because of gravity or external force, and supporting block 25 is above 11 side of thread bush and corresponding threaded rod 8
Position be fixedly connected with telescopic rod 26, the one end of telescopic rod 26 far from supporting block 25 is fixedly connected with thread bush 11, by setting
Telescopic rod 26 is set, the position-limiting action to thread bush 11 is played, prevents threaded rod 8 from following thread bush 11 to rotate together when rotating,
The bottom of thread bush 11 is fixedly connected with the first fixed ring 12, and the midpoint of 3 left and right sides of cabinet offers thermovent 13, dissipates
Air Filter 14 is fixedly connected on the inner wall of hot mouth 13, the position above 3 inner wall of the cabinet left and right sides and corresponding thermovent 13 is solid
Surely it is connected with fixed plate 15, the front side of fixed plate 15 is fixedly connected with shaft 16, and the surface activity of shaft 16 is connected with fixed link
17, the bottom of fixed link 17 is fixedly connected with impact hammer 18, and the top of fixed link 17 is fixedly connected with the second fixed ring 19, and first
It being fixedly connected between fixed ring 12 and the second fixed ring 19 by rope 20, the midpoint of 3 bottom of cabinet offers ventilation opening 21,
3 bottom of the cabinet and position of corresponding ventilation opening 21 is fixedly connected with dust cover 27, by the way that dust cover 27 is arranged, prevents in air
Dust is entered inside cabinet 3 by ventilation opening 21, and the left and right sides of 3 inner wall bottom of cabinet and corresponding ventilation opening 21 is fixedly connected with
There is support column 22, the top of two support columns 22 is fixedly connected with placement plate 23, and the top of placement plate 23 is fixedly connected with dry type
Transformer body 24, by positive and negative motor 4, positive and negative shaft 5, radiator shutter 6, rolling bearing 7, threaded rod 8, first bevel gear 9,
Second bevel gear 10, thread bush 11, thermovent 13, fixed plate 15, shaft 16, fixed link 17, impact hammer 18, rope 20 and ventilation
Mouth 21 cooperates, and plays the role of good heat dissipation effect, and the cleaning of discontinuity can be carried out to the dust on Air Filter 14, be kept away
Exempt to cause heat caused by 3 inside dry-type transformer ontology 24 of cabinet can not due on Air Filter 14 because of dust bulk deposition
The case where discharge, occurs, and improves radiating efficiency, extends the service life of dry-type transformer ontology 24.
In use, positive start positive and negative motor 4, positive and negative shaft 5 is driven constantly to rotate in the forward direction by positive and negative motor 4, positive and negative rotation
Axis 5 drives second bevel gear 10 to rotate in the forward direction, and second bevel gear 10 drives first bevel gear 9 to rotate, so that threaded rod 8 be driven to revolve
Turn, threaded rod 8 drives thread bush 11 to move to 25 direction of supporting block, so that thread bush 11 pulls rope by the first fixed ring 12
20 the second fixed rings 19 of drive are moved to 24 direction of dry-type transformer ontology, so that it is anti-to make fixed link 17 that impact hammer 18 be driven to hit
Dirt net 14, while positive and negative shaft 5 drives the rotation of radiator shutter 6 to radiate dry-type transformer ontology 24, then reverse starting
Positive and negative motor 4 drives positive and negative shaft 5 to reversely rotate by positive and negative motor 4, and positive and negative shaft 5 drives second bevel gear 10 to reversely rotate,
So that the rotation of threaded rod 8 drives thread bush 11 to move to the direction of rolling bearing, to drive fixed link 17 and impact hammer
18 are resetted, until above step is then constantly repeated, so that impact hammer after thread bush 11 moves to original position
18 constantly hit Air Filter 14, so that the dust on Air Filter 14 is shaken off, to improve dry type transformation
The radiating efficiency of device ontology 24.
In summary: the dry-type transformer of the good heat dissipation effect, by positive and negative motor 4, positive and negative shaft 5, radiator shutter 6,
Rolling bearing 7, threaded rod 8, first bevel gear 9, second bevel gear 10, thread bush 11, thermovent 13, fixed plate 15, shaft 16,
Fixed link 17, impact hammer 18, rope 20 and ventilation opening 21 cooperate, and solve common dry-type transformer heat dissipation effect and pay no attention to
The problem of thinking.
As shown in figure 3, a kind of on-line early warning system for the acting type dry-type transformer that radiates, including system control host and monitoring
Terminal, the monitoring terminal are correspondingly arranged with high-tension switch cabinet and connect with system control host；The monitoring terminal includes prison
Survey extension set and suction fan connected to it, gas collecting module, temperature sensor and alarm device；The wherein air-breathing
Blower is general to sample to gas in transformer；The gas collecting module and temperature sensor acquire flue respectively
Gas componant and temperature data information in road, and the data information of acquisition is sent to monitoring unit；The monitoring unit pair
The gas componant and temperature data received is handled, and data information is sent to system control host by treated, together
When, warning information is sent to alarm device and carries out early warning；The monitoring unit is controlled by RS485 communication modes and system
Host connection, the system control host are connect by communication network with remote centralized management system.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of heat radiation type dry-type transformer, including bottom plate (1), it is characterised in that: be symmetrically arranged at the top of the bottom plate (1)
The top of two support bases (2), two support bases (2) is fixedly connected by cabinet (3), the midpoint at the top of the cabinet (3)
It is fixedly connected with positive and negative motor (4), is fixedly connected with positive and negative shaft (5) on the output shaft of the positive and negative motor (4), it is described positive and negative
The bottom of shaft (5), which is run through cabinet (3) and extended to inside it, to be fixedly connected with radiator shutter (6), and cabinet (3) inner wall is left
The inside grooves of right two lateral roofs are fixedly connected to rolling bearing (7), and the internal activity of the rolling bearing (7) is connected with spiral shell
Rasp bar (8), the one end of the threaded rod (8) far from rolling bearing (7) is through rolling bearing (7) and extends to its external fixed company
It is connected to first bevel gear (9), the position of positive and negative shaft (5) surface and corresponding first bevel gear (9) is fixedly connected with and the
The surface of one bevel gear (9) intermeshing second bevel gear (10), the threaded rod (8) is threaded with thread bush (11),
The bottom of the thread bush (11) is fixedly connected with the first fixed ring (12), and the midpoint at left and right sides of the cabinet (3) is opened
It equipped with thermovent (13), is fixedly connected with Air Filter (14) on the inner wall of the thermovent (13), described cabinet (3) inner wall or so
Position above two sides and corresponding thermovent (13) is fixedly connected with fixed plate (15), and the front side of the fixed plate (15) is fixed to be connected
It is connected to shaft (16), the surface activity of the shaft (16) is connected with fixed link (17), and the bottom of the fixed link (17) is fixed
It is connected with impact hammer (18), is fixedly connected with the second fixed ring (19) at the top of the fixed link (17), first fixed ring
(12) it is fixedly connected between the second fixed ring (19) by rope (20), the midpoint of cabinet (3) bottom offers logical
Support column (22) are fixedly connected at left and right sides of air port (21), cabinet (3) the inner wall bottom and correspondence ventilation opening (21),
It is fixedly connected with placement plate (23) at the top of two support columns (22), dry type change is fixedly connected at the top of the placement plate (23)
Depressor ontology (24).
2. a kind of heat dissipation acting type dry-type transformer according to claim 1, it is characterised in that: threaded rod (8) surface
And the position between first bevel gear (9) and thread bush (11) is connected with supporting block (25), the supporting block (25)
Top and cabinet (3) inner wall at the top of be fixedly connected.
3. a kind of heat dissipation acting type dry-type transformer according to claim 2, it is characterised in that: the supporting block (25) is close
Position above thread bush (11) side and corresponding threaded rod (8) is fixedly connected with telescopic rod (26), and the telescopic rod (26) is remote
One end from supporting block (25) is fixedly connected with thread bush (11).
4. a kind of heat dissipation acting type dry-type transformer according to claim 1, it is characterised in that: cabinet (3) bottom and
The position of corresponding ventilation opening (21) is fixedly connected with dust cover (27).
5. a kind of on-line early warning system for the acting type dry-type transformer that radiates, it is characterised in that: control host and monitoring including system
Terminal, the monitoring terminal are correspondingly arranged with high-tension switch cabinet and connect with system control host；The monitoring terminal includes prison
Survey extension set and suction fan connected to it, gas collecting module, temperature sensor and alarm device；The wherein air-breathing
Blower is general to sample to gas in transformer；The gas collecting module and temperature sensor acquire flue respectively
Gas componant and temperature data information in road, and the data information of acquisition is sent to monitoring unit；The monitoring unit pair
The gas componant and temperature data received is handled, and data information is sent to system control host by treated, together
When, warning information is sent to alarm device and carries out early warning；The monitoring unit is controlled by RS485 communication modes and system
Host connection, the system control host are connect by communication network with remote centralized management system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810477484.7A CN110504084A (en) | 2018-05-18 | 2018-05-18 | A kind of heat radiation type dry-type transformer and its on-line early warning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810477484.7A CN110504084A (en) | 2018-05-18 | 2018-05-18 | A kind of heat radiation type dry-type transformer and its on-line early warning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110504084A true CN110504084A (en) | 2019-11-26 |
Family
ID=68583936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810477484.7A Withdrawn CN110504084A (en) | 2018-05-18 | 2018-05-18 | A kind of heat radiation type dry-type transformer and its on-line early warning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110504084A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111960349A (en) * | 2020-09-16 | 2020-11-20 | 江苏璟荣建设有限公司 | Power transmission and transformation equipment state monitoring data and hidden danger checking method and device |
| CN113126193A (en) * | 2021-03-17 | 2021-07-16 | 梦幻世界科技(珠海)有限公司 | Reality surface concave-convex grating fused based on laser direct writing and manufacturing device of grating |
| CN114999792A (en) * | 2022-07-22 | 2022-09-02 | 广东鹏鑫电气科技有限公司 | SCB14 type dry-type power transformer with high safety |
-
2018
- 2018-05-18 CN CN201810477484.7A patent/CN110504084A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111960349A (en) * | 2020-09-16 | 2020-11-20 | 江苏璟荣建设有限公司 | Power transmission and transformation equipment state monitoring data and hidden danger checking method and device |
| CN111960349B (en) * | 2020-09-16 | 2023-12-15 | 江苏璟荣建设有限公司 | Power transmission and transformation equipment state monitoring data and hidden danger investigation method and device |
| CN113126193A (en) * | 2021-03-17 | 2021-07-16 | 梦幻世界科技(珠海)有限公司 | Reality surface concave-convex grating fused based on laser direct writing and manufacturing device of grating |
| CN114999792A (en) * | 2022-07-22 | 2022-09-02 | 广东鹏鑫电气科技有限公司 | SCB14 type dry-type power transformer with high safety |
| CN114999792B (en) * | 2022-07-22 | 2023-04-07 | 广东鹏鑫电气科技有限公司 | SCB14 model dry-type power transformer |
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| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191126 |
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| WW01 | Invention patent application withdrawn after publication |