CN218826466U - Built-in partial discharge sensor of transformer - Google Patents
Built-in partial discharge sensor of transformer Download PDFInfo
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- CN218826466U CN218826466U CN202222776996.8U CN202222776996U CN218826466U CN 218826466 U CN218826466 U CN 218826466U CN 202222776996 U CN202222776996 U CN 202222776996U CN 218826466 U CN218826466 U CN 218826466U
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- sensor
- discharge sensor
- transformer
- cover
- mounting flange
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The utility model provides a built-in partial discharge sensor of transformer, including mounting flange, connector lid, sensor lid and discharge sensor, discharge sensor's outer lane is provided with the collar, discharge sensor arranges the sensor lid in, the collar is connected with mounting flange, the connector lid is installed on the collar, compares with prior art, the utility model discloses following beneficial effect has: through installing discharge sensor, sensor lid in the transformer outside for discharge sensor's installation, demolish and change become simply, can accomplish above operation under the transformer normal operating condition that does not have a power failure, does not pump, sensor lid, discharge sensor are connected with mounting flange alone respectively, and sensor lid also can play the sealed effect to the inside fluid of transformer, is difficult for taking place to leak, can play the guard action to discharge sensor, avoids directly exposing externally, has prolonged discharge sensor's life.
Description
Technical Field
The utility model belongs to the technical field of the detection is put in the transformer office, in particular to built-in partial discharge sensor of transformer.
Background
The ultrahigh frequency is used as a relatively advanced monitoring method in the field of partial discharge at present, is widely applied to equipment such as GIS, switch cabinets, AIS and the like, and is used for detecting the ultrahigh frequency partial discharge of a transformer externally based on a special all-metal structure of the power transformer, so that the detection effect is quite unsatisfactory; under the technical background, a built-in ultrahigh frequency partial discharge sensor opens a new idea for partial discharge detection of a transformer; two types of sensors are mainly involved in the current application: 1. built-in sensor: when the sensor is installed, the sensor needs to enter the high-voltage equipment, such as the opening of a hole on the surface of a transformer or the reconstruction of a manhole/hand hole and the like, so that the sensor has high safety requirement, but has the advantages that the sensor is basically not interfered by external signals after the installation is finished, and the detection effect is good; 2. an oil drain valve type sensor: the transformer is generally installed at an accident oil discharge valve, and the valve is a ball valve, a gate valve or a butterfly valve with the type of more than DN150, so that the transformer can be installed without power failure; however, in the practical application process, as the safety problem is considered, once the sensor fails, the transformer can be replaced only by cutting off the power supply, the loss is extremely high, and the sensor is not easy to install, so that the application of partial discharge detection of the transformer is restricted, and therefore, the built-in partial discharge sensor of the transformer is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a built-in partial discharge sensor of transformer, the problem of proposing among the above-mentioned background art is solved to the not enough that exists to prior art.
The utility model discloses a following technical scheme realizes: a transformer built-in type partial discharge sensor comprises a mounting flange, a connector cover, a sensor cover and a discharge sensor, wherein the mounting flange is fixed on the outer side of a transformer, and the sensor cover is mounted in the mounting flange;
the outer ring of the discharge sensor is provided with a mounting ring, the left side surface of the mounting ring is recessed towards the right to form a first inner groove, the discharge sensor is arranged in a sensor cover, the mounting ring is connected with a mounting flange, and the right end of the sensor cover is arranged in the first inner groove;
the connector cover is installed on the installation ring, the discharge sensor is arranged in the connector cover, and a wiring sleeve is arranged below the connector cover.
As a preferred embodiment, a plurality of threaded holes one which are distributed annularly are arranged on the outer ring of the right side surface of the mounting flange, and a plurality of threaded holes two which are distributed annularly are arranged on the inner ring of the right side surface of the mounting flange and are used for being connected with a sensor cover and a discharge sensor, wherein the sensor cover and the discharge sensor are respectively and independently connected with the mounting flange.
As a preferred embodiment, a plurality of countersunk head screw holes distributed in an annular shape are formed in the right side surface of the sensor cover, and the mounting flange is connected with the sensor cover through a second threaded hole, a countersunk head screw and a countersunk head screw hole.
As a preferred embodiment, a plurality of annularly distributed connection screw holes are formed in the right side surface of the mounting ring, and the mounting flange is connected with the discharge sensor through the connection screws, the first threaded holes and the connection screw holes.
As a preferred embodiment, the left surface of the sensor cover is recessed towards the right to form a second inner groove, and the right surface of the sensor cover is recessed towards the left to form an outer groove;
the oil seal is sleeved in the inner groove II and tightly pressed between the sensor cover and the connecting flange;
the sealing ring is sleeved in the outer groove, and the sealing ring is tightly pressed between the sensor cover and the first inner groove.
As a preferred embodiment, the right side surface of the connecting ring is provided with a plurality of fixing screw holes distributed annularly;
the connector is covered to the integrated into one piece and is had the go-between, be provided with on the go-between with fixed screw assorted installation screw, through fixed screw, installation screw and screwed connection between connector lid and the go-between, the pressfitting has sealed the pad between go-between and the installation ring.
After the technical scheme is adopted, the beneficial effects of the utility model are that: the discharge sensor and the sensor cover are arranged on the outer side of the transformer, so that the installation, the removal and the replacement of the discharge sensor become simple, the operation can be completed under the normal running state of the transformer without power failure and oil pumping, the sensor cover and the discharge sensor are respectively and independently connected with the installation flange, and when the discharge sensor is replaced, the sensor cover can also play a role in sealing oil in the transformer and is not easy to leak;
through at a connector lid of discharge sensor's outside screw installation, can play the guard action to discharge sensor, avoid directly exposing externally, prolonged discharge sensor's life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is the overall structure schematic diagram of the built-in partial discharge sensor of the transformer of the present invention.
Fig. 2 is a schematic cross-sectional view of the transformer built-in partial discharge sensor of the present invention.
Fig. 3 is a schematic diagram of the built-in partial discharge sensor of the transformer according to the present invention.
Fig. 4 is an enlarged schematic view of a position a of the transformer built-in partial discharge sensor of the present invention.
In the figure, 1-connector cover, 11-connecting ring, 12-wiring sleeve, 13-sealing gasket, 2-discharge sensor, 21-mounting ring, 22-connecting screw hole, 23-sealing ring, 24-inner groove I, 3-sensor cover, 31-outer groove, 32-inner groove II, 33-countersunk screw hole, 34-oil seal, 4-mounting flange and 5-transformer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 4, the present invention provides a technical solution: a built-in partial discharge sensor of a transformer comprises a mounting flange 4, a connector cover 1, a sensor cover 3 and a discharge sensor 2, wherein the mounting flange 4 is fixed on the outer side of the transformer 5, and the sensor cover 3 is mounted in the mounting flange 4;
the outer ring of the discharge sensor 2 is provided with a mounting ring 21, the left side surface of the mounting ring 21 is recessed towards the right to form a first inner groove 24, the discharge sensor 2 is arranged in the sensor cover 3, the mounting ring 21 is connected with the mounting flange 4, and the right end of the sensor cover 3 is arranged in the first inner groove 24;
the connector cover 1 is mounted on the mounting ring 21, and the discharge sensor 2 is placed inside the connector cover 1, and the wiring sleeve 12 is provided below the connector cover 1.
As an embodiment of the present invention, please refer to fig. 1, fig. 3 and fig. 4, a plurality of first threaded holes distributed in an annular shape are provided on the outer ring of the right side surface of the mounting flange 4, and a plurality of second threaded holes distributed in an annular shape are provided on the inner ring of the right side surface of the mounting flange 4, and are used for being connected to the sensor cover 3 and the discharge sensor 2, the sensor cover 3 and the discharge sensor 2 are respectively and separately connected to the mounting flange 4, when the discharge sensor 2 is replaced, the sensor cover 3 can also seal the oil inside the transformer 5, and the leakage is not easy to occur;
a plurality of countersunk head screw holes 33 which are distributed annularly are formed in the right side surface of the sensor cover 3, the mounting flange 4 is connected with the sensor cover 3 through a second threaded hole, a countersunk head screw and the countersunk head screw holes 33, a plurality of connecting screw holes 22 which are distributed annularly are formed in the right side surface of the mounting ring 21, and the connecting screws, the first threaded holes and the connecting screw holes 22 among the mounting flanges 4 are connected with the discharge sensor 2;
in practical use, before the transformer 5 is filled with oil in vacuum for the first time, the sensor cover 3 is mounted on the mounting flange 4 on the outer wall of the transformer through a countersunk screw, and the oil seal 34 is sleeved in the inner groove II 32, so that the oil seal 34 is tightly pressed between the mounting flange 4 and the sensor cover 3, leakage in later oil filling is prevented, the sealing ring 23 is sleeved in the outer groove 31, the discharge sensor 2 is sleeved in the sensor cover 3, the mounting flange 4 and the mounting ring 21 are fixed, a cable penetrates through the connecting sleeve on the connector cover 1 and is connected with the discharge sensor 2, and finally the connector cover 1 is mounted on the mounting ring 21;
through installing discharge sensor 2, sensor lid 3 in the transformer 5 outside for the installation of discharge sensor 2, demolish and change become simply, can accomplish above operation under the transformer 5 normal operating condition that does not have a power failure, does not pump oil, and sensor lid 3, discharge sensor 2 are connected with mounting flange 4 alone respectively, and when changing discharge sensor 2, sensor lid 3 also can play the sealed effect to the inside fluid of transformer 5, is difficult for taking place to leak.
As an embodiment of the present invention, referring to fig. 2, 3 and 4, an inner groove second 32 is formed on the left surface of the sensor cover 3 and an outer groove 31 is formed on the right surface of the sensor cover 3;
the oil seal 34 is sleeved in the inner groove II 32, the oil seal 34 is tightly pressed between the sensor cover 3 and the connecting flange, the sealing effect between the sensor cover 3 and the connecting flange is improved, and oil is not easy to leak;
the sealing ring 23 is sleeved in the outer groove 31, the sealing ring 23 is tightly pressed between the sensor cover 3 and the inner groove 24, the sealing effect between the sensor cover 3 and the discharge sensor 2 is improved, external rainwater is not easy to permeate into the sensor cover 3, and the service life of the discharge sensor 2 is prolonged.
As an embodiment of the present invention, please refer to fig. 1, fig. 3 and fig. 4, the right side surface of the connection ring 11 is provided with a plurality of fixing screw holes distributed in an annular shape, the connection ring 11 is integrally formed on the connector cover 1, the connection ring 11 is provided with mounting screw holes matched with the fixing screw holes, the connector cover 1 and the connection ring 11 are connected through the fixing screw holes, the mounting screw holes and screws, and a sealing gasket 13 is pressed between the connection ring 11 and the mounting ring 21;
when in actual use, be connected the cable with discharge sensor 2 the back, earlier with several screw cover in the installation screw to seal up 13 covers on the screw with sealed, align screw and fixed screw again, use the instrument with the screw twist in the fixed screw can, through connector lid 1 of external screw installation at discharge sensor 2, can play the guard action to discharge sensor 2, avoid directly exposing externally, prolonged discharge sensor 2's life.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A transformer built-in type partial discharge sensor comprises a mounting flange (4), a connector cover (1), a sensor cover (3) and a discharge sensor (2), wherein the mounting flange (4) is fixed on the outer side of a transformer (5), and the transformer built-in type partial discharge sensor is characterized in that the sensor cover (3) is mounted in the mounting flange (4);
a mounting ring (21) is arranged on the outer ring of the discharge sensor (2), the left side surface of the mounting ring (21) is recessed towards the right to form a first inner groove (24), the discharge sensor (2) is arranged in the sensor cover (3), the mounting ring (21) is connected with the mounting flange (4), and the right end of the sensor cover (3) is arranged in the first inner groove (24);
the connector cover (1) is installed on the installation ring (21), the discharge sensor (2) is arranged inside the connector cover (1), and a wiring sleeve (12) is arranged below the connector cover (1).
2. The transformer built-in partial discharge sensor according to claim 1, wherein: a plurality of threaded holes I which are distributed annularly are formed in the outer ring of the right side surface of the mounting flange (4), and a plurality of threaded holes II which are distributed annularly are formed in the inner ring of the right side surface of the mounting flange (4).
3. The transformer built-in partial discharge sensor according to claim 2, wherein: a plurality of countersunk head screw holes (33) which are distributed annularly are formed in the right side surface of the sensor cover (3), and the sensor cover (3) is connected with the mounting flange (4) through a second threaded hole, a countersunk head screw and the countersunk head screw holes (33).
4. The transformer built-in partial discharge sensor according to claim 2, wherein: a plurality of connection screw holes (22) which are distributed annularly are formed in the right side surface of the mounting ring (21), and the discharge sensor (2) is connected with the mounting flange (4) through a connection screw, a first threaded hole and the connection screw holes (22).
5. The transformer built-in partial discharge sensor according to claim 1, wherein: the left side surface of the sensor cover (3) is recessed towards the right to form a second inner groove (32), and the right side surface of the sensor cover (3) is recessed towards the left to form an outer groove (31);
an oil seal (34) is sleeved in the inner groove II (32), and the oil seal (34) is tightly pressed between the sensor cover (3) and the connecting flange;
and a sealing ring (23) is sleeved in the outer groove (31), and the sealing ring (23) is tightly pressed between the sensor cover (3) and the inner groove I (24).
6. The transformer built-in partial discharge sensor according to claim 1, wherein: connector lid (1) is gone up the integrated into one piece and is had go-between (11), a plurality of fixed screws that are the annular and distribute are seted up to the right side surface of go-between (11), be provided with on go-between (11) with fixed screw assorted installation screw, through fixed screw, installation screw and screw connection between connector lid (1) and go-between (11), the pressfitting has sealed pad (13) between go-between (11) and the collar (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222776996.8U CN218826466U (en) | 2022-10-19 | 2022-10-19 | Built-in partial discharge sensor of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222776996.8U CN218826466U (en) | 2022-10-19 | 2022-10-19 | Built-in partial discharge sensor of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218826466U true CN218826466U (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222776996.8U Active CN218826466U (en) | 2022-10-19 | 2022-10-19 | Built-in partial discharge sensor of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218826466U (en) |
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2022
- 2022-10-19 CN CN202222776996.8U patent/CN218826466U/en active Active
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