CN214099387U - V-shaped wiring combined transformer for outdoor 35kV metering - Google Patents
V-shaped wiring combined transformer for outdoor 35kV metering Download PDFInfo
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- CN214099387U CN214099387U CN202022607899.7U CN202022607899U CN214099387U CN 214099387 U CN214099387 U CN 214099387U CN 202022607899 U CN202022607899 U CN 202022607899U CN 214099387 U CN214099387 U CN 214099387U
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Abstract
The utility model discloses an outdoor 35kV measures with V type wiring combination mutual-inductor, including terminal, a guide arm, epoxy layer, polyurethane layer, coil, iron core, voltage outgoing line terminal, secondary wiring platform, current transformer primary terminal, current transformer primary coil, current transformer secondary coil, current outgoing line terminal, wire, first run, second run, third run and installation base once of voltage unit. The utility model has the advantages that: epoxy layer pours into the mutual-inductor unit, and outer spraying polyurethane layer improves insulating nature and wearability, and voltage transformer all has two with current transformer, the accurate measurement charging of being convenient for, and the mutual-inductor is split type structural connection, and the installation of being convenient for is maintained, and the iron core has two, and the iron core is the annular, reduces no-load loss, and the current transformer coil adopts iron-based micrite alloy to do the magnetic core, improves and to change current test sensitivity, also can guarantee to carry out effective monitoring to load current simultaneously.
Description
Technical Field
The utility model relates to a mutual-inductor specifically is an outdoor 35kV measures with V type wiring combination mutual-inductor belongs to transformer technical field for the appearance.
Background
The transformer is also called as instrument transformer, which is the general name of current transformer and voltage transformer, can change high voltage into low voltage, large current into small current, and is used for measuring or protecting system, its function is mainly to change high voltage or large current into standard low voltage (100V) or standard small current (5A or 1A, all refer to rated value) according to proportion, in order to realize the standardization, miniaturization of measuring instrument, protecting equipment and automatic control equipment, meanwhile the transformer can also be used to separate high voltage system, in order to guarantee the safety of human body and equipment, usually the electric load change of electric system is big, the current change is especially big, can't guarantee the power supply department can carry on the accurate charging, and the 35kV circuit belongs to the high voltage measurement, in order to the outdoor three-phase three-wire measurement mode of 35kV electric system, therefore design this product.
The structure of the existing mutual inductor is simple: firstly, the mutual inductor is made of common insulating materials, so that the mutual inductor has the advantages of high strength, wear resistance, corrosion resistance, ageing resistance, environmental protection and the like, and meanwhile, polyurethane is not sprayed on the surface of the mutual inductor, the surface of the mutual inductor is easy to age, and the mutual inductor needs to be periodically maintained for many times; secondly, the magnetic core of the existing voltage transformer does not adopt an annular iron core, so that the no-load loss of the voltage transformer is easily increased, and meanwhile, the metering accuracy cannot be ensured; thirdly, the current transformer coil uses common alloy as a magnetic core, the sensitivity of the current transformer coil to the test of the variable current is low, and the effective monitoring of the load current cannot be guaranteed; fourthly, the whole volume of traditional mutual inductor is great, and the installation is comparatively complicated, and the later maintenance of being not convenient for.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an outdoor 35kV measures with V type wiring combination mutual-inductor just in order to solve above-mentioned problem.
The utility model discloses a following technical scheme realizes above-mentioned purpose: a V-shaped wiring combined transformer for outdoor 35kV metering comprises a voltage unit primary terminal, a primary guide rod, an epoxy resin layer, a polyurethane layer, a coil, an iron core, a voltage outlet terminal, a secondary wiring table, a current transformer primary terminal, a current transformer primary coil, a current transformer secondary coil, a current outlet terminal, a wire, a first connecting row, a second connecting row, a third connecting row and an installation base; the coil, the iron core, the voltage outgoing terminal, the primary coil of the current transformer, the secondary coil of the current transformer, the first connecting bar, the second connecting bar, the third connecting bar and the mounting base form a main structure of the device, the primary terminal of the voltage unit is arranged at the bottom of the side surface of the voltage transformer, the primary guide rod is connected to the inner end of the primary terminal of the voltage unit, the epoxy resin layer is arranged at the inner layer of the sensor, the polyurethane layer is sprayed on the outer layer of the sensor, the coil is arranged in the voltage transformer, the iron core is arranged at the inner layer of the coil, the voltage outgoing terminal is connected to the upper end of the coil, the voltage outgoing terminal is arranged above the voltage transformer, the secondary wiring platform is arranged between the current transformers, the primary terminal of the current transformer is arranged at the outer side of the bottom of the current transformer, the primary coil of the current transformer is arranged in the current transformer, the utility model discloses a current transformer, including current transformer primary winding, current transformer secondary winding, current terminal outgoing lines, current transformer secondary winding, current transformer, first connecting row, voltage transformer and current transformer, current transformer secondary winding connects in current transformer primary winding upper end, current terminal outgoing lines passes through the wire and is connected with current transformer secondary winding, just current terminal outgoing lines sets up in current transformer upper surface outer end, adjacent current transformer is connected to first connecting row, the voltage transformer and the current transformer of one side are connected to the second connecting row, the voltage transformer and the current transformer of opposite side are connected to the third connecting row, the bottom at voltage transformer and current transformer is settled to the installation base.
Preferably, in order to enable the transformer to have high insulation and wear resistance, the epoxy resin layer is poured into the voltage transformer and current transformer unit, and the polyurethane layer is uniformly sprayed on the outer surface of the epoxy resin layer.
Preferably, in order to meet the three-phase three-wire metering requirement of a power supply department, the number of the epoxy resin layer poured voltage transformers and the number of the epoxy resin layer poured current transformers are two, and the epoxy resin layer poured current transformers are arranged between the voltage transformers.
Preferably, in order to flexibly and simply install the transformer, voltage transformers are installed at two ends of the outer side of the installation base, and the voltage transformers on the installation base are connected in a split structure.
Preferably, in order to reduce the no-load loss of the voltage transformer to ensure the accuracy of the measurement, the number of the iron cores is two, and the iron cores are annular.
Preferably, in order to improve the test sensitivity to the variable current, two secondary coils of the current transformer are provided, and the primary coil of the current transformer and the secondary coil of the current transformer adopt iron-based microcrystalline alloy as magnetic cores.
The utility model has the advantages that: the V-shaped wiring combined transformer for outdoor 35kV metering is reasonable in design, the epoxy resin layer is poured into a voltage transformer and a current transformer unit, the polyurethane layer is uniformly sprayed on the outer surface of the epoxy resin layer, so that the transformer has higher insulativity and wear resistance, meanwhile, the composite insulating material also has the advantages of high strength, corrosion resistance, ageing resistance, environmental protection and the like, and is convenient to use for a long time, two voltage transformers and two current transformers are both poured on the epoxy resin layer, the current transformers poured on the epoxy resin layer are arranged between the voltage transformers, so that the three-phase three-wire metering requirements of a power supply department can be met, meanwhile, the current transformers are connected in series on a line to be measured, the voltage transformers are connected in parallel on the line to be measured, so that the power supply department can accurately measure and charge when in use, and the voltage transformers are installed at the two ends of the outer side of the installation base, and the voltage transformer on the installation base is split type structural connection, the installation mutual-inductor that can be nimble simple and convenient, this combination mutual-inductor volume is less simultaneously, the later stage of being convenient for is dismantled and is maintained, the iron core has two, and the iron core is the annular, can reduce voltage transformer self no-load loss in order to guarantee the accuracy of measurement, coil and iron core pass through the electromagnetic induction principle simultaneously, convert the high voltage to the bottom voltage signal, also can separate high voltage system, in order to guarantee the safety of the person and equipment, current transformer secondary coil has two, and current transformer primary coil and current transformer secondary coil adopt iron-based micrite alloy to do the magnetic core, can improve the sensitivity of testing to the change electric current, also can guarantee to carry out effective monitoring to load current simultaneously.
Drawings
Fig. 1 is a front view of the combined transformer of the present invention;
fig. 2 is a top view of the combined transformer of the present invention;
fig. 3 is a cross-sectional view of the voltage transformer of the present invention;
fig. 4 is a cross-sectional view of the current transformer of the present invention.
In the figure: 1. the transformer comprises a voltage unit primary terminal, 2, a primary guide rod, 3, an epoxy resin layer, 4, a polyurethane layer, 5, a coil, 6, an iron core, 7, a voltage outlet terminal, 8, a secondary wiring platform, 9, a current transformer primary terminal, 10, a current transformer primary coil, 11, a current transformer secondary coil, 12, a current outlet terminal, 13, a wire, 14, a first connecting row, 15, a second connecting row, 16, a third connecting row, 17 and an installation base.
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 work belong to the protection scope of the present invention.
Referring to fig. 1-4, a V-shaped wiring combined transformer for outdoor 35kV metering comprises a voltage unit primary terminal 1, a primary guide rod 2, an epoxy resin layer 3, a polyurethane layer 4, a coil 5, an iron core 6, a voltage outlet terminal 7, a secondary wiring platform 8, a current transformer primary terminal 9, a current transformer primary coil 10, a current transformer secondary coil 11, a current outlet terminal 12, a wire 13, a first connecting row 14, a second connecting row 15, a third connecting row 16 and a mounting base 17; the coil 5, the iron core 6, the voltage outgoing terminal 7, the primary coil 10 of the current transformer, the secondary coil 11 of the current transformer, the first connecting bar 14, the second connecting bar 15, the third connecting bar 16 and the mounting base 17 form the main structure of the device, the primary terminal 1 of the voltage unit is arranged at the bottom of the side surface of the voltage transformer, the primary guide rod 2 is connected with the inner end of the primary terminal 1 of the voltage unit, the epoxy resin layer 3 is arranged at the inner layer of the sensor, the polyurethane layer 4 is sprayed on the outer layer of the sensor, the coil 5 is arranged in the voltage transformer, the iron core 6 is arranged at the inner layer of the coil 5, the voltage outgoing terminal 7 is connected with the upper end of the coil 5, the voltage outgoing terminal 7 is arranged on the voltage transformer, the secondary junction box 8 is arranged between the current transformers, the primary terminal 9 of the current transformer is arranged at the outer side of the bottom of the current transformer, current transformer primary coil 10 settles in current transformer, current transformer secondary coil 11 is connected in current transformer primary coil 10 upper end, current outlet terminal 12 is connected with current transformer secondary coil 11 through wire 13, just current outlet terminal 12 sets up in current transformer upper surface outer end, adjacent current transformer is connected to first connecting row 14, the voltage transformer and the current transformer of one side are connected to second connecting row 15, the voltage transformer and the current transformer of opposite side are connected to third connecting row 16, install the bottom at voltage transformer and current transformer in base 17.
The epoxy resin layer 3 is poured into a voltage transformer and current transformer unit, the polyurethane layer 4 is uniformly sprayed on the outer surface of the epoxy resin layer 3, the transformer has higher insulativity and wear resistance, meanwhile, the composite insulating material also has the advantages of high strength, corrosion resistance, ageing resistance, environmental protection and the like, and is convenient to use for a long time, two voltage transformers and two current transformers are both poured into the epoxy resin layer 3, the current transformers are arranged between the voltage transformers and can meet the three-phase three-wire metering requirement of a power supply department, the current transformers are connected in series on a measured circuit, the voltage transformers are connected in parallel on the measured circuit, the accurate measurement and charging of the power supply department can also be ensured when the current transformers are used, the voltage transformers are arranged at two ends of the outer side of the mounting base 17, and the voltage transformers on the mounting base 17 are connected in a split structure, the installation mutual-inductor that can be nimble simple and convenient, this combination mutual-inductor volume is less simultaneously, and the later stage of being convenient for is dismantled and is maintained, iron core 6 has two, and iron core 6 is the annular, can reduce voltage transformer self no-load loss in order to guarantee the accuracy of measurement, and coil 5 and iron core 6 pass through the electromagnetic induction principle simultaneously, convert the high pressure to bottom voltage signal, also can separate high voltage system to the safety of assurance person and equipment, current transformer secondary coil 11 has two, and current transformer primary coil 10 and current transformer secondary coil 11 adopt iron-based micrite alloy to do the magnetic core, can improve the sensitivity of testing to the change electric current, also can guarantee simultaneously to carry out effective monitoring to load current.
The working principle is as follows: when the outdoor 35kV metering V-shaped wiring combined transformer is used, firstly, a coil 5 and an iron core 6 are arranged in a voltage transformer, a voltage outlet terminal 7 connected with the upper end of the coil 5 is arranged outside the voltage transformer, then a primary coil 10 and a secondary coil 11 of the current transformer are arranged in the current transformer, a lead 13 at the upper end of the secondary coil 11 of the current transformer is connected with a current outlet terminal 12 at the top end of the current transformer, finally, the current transformer and the voltage transformer are arranged on an installation base 17, meanwhile, a second connecting row 15 is connected with the voltage transformer and the current transformer at one side, adjacent current transformers are connected through a first connecting row 14, a third connecting row 16 is connected with the current transformer and the voltage transformer at the other side, and the transformers cast and sprayed on an epoxy resin layer 3 and a polyurethane layer 4 have better insulation and strength during use, the service life of the mutual inductor is prolonged, and then the safety of a person and equipment is ensured by separating a high-voltage system, the mutual inductor adopts a split structure, the installation is flexible, simple and convenient, the maintenance is convenient, and meanwhile, the voltage and the current of a detected line can be accurately measured.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides an outdoor 35kV measures with V type wiring combination mutual-inductor which characterized in that: the transformer primary coil mounting structure comprises a voltage unit primary terminal (1), a primary guide rod (2), an epoxy resin layer (3), a polyurethane layer (4), a coil (5), an iron core (6), a voltage outlet terminal (7), a secondary wiring table (8), a current transformer primary terminal (9), a current transformer primary coil (10), a current transformer secondary coil (11), a current outlet terminal (12), a wire (13), a first connecting row (14), a second connecting row (15), a third connecting row (16) and a mounting base (17);
the coil (5), the iron core (6), the voltage outlet terminal (7), the primary coil (10) of the current transformer, the secondary coil (11) of the current transformer, the first connecting row (14), the second connecting row (15), the third connecting row (16) and the mounting base (17) form a main body structure of the device;
the voltage unit primary terminal (1) is arranged at the bottom end of the side face of the voltage transformer, the primary guide rod (2) is connected to the inner end of the voltage unit primary terminal (1), the epoxy resin layer (3) is arranged on the inner layer of the sensor, the polyurethane layer (4) is sprayed on the outer layer of the sensor, the coil (5) is arranged in the voltage transformer, the iron core (6) is arranged on the inner layer of the coil (5), the voltage outlet terminal (7) is connected to the upper end of the coil (5), and the voltage outlet terminal (7) is arranged on the voltage transformer;
the secondary wiring table (8) is arranged between the current transformers, the primary terminals (9) of the current transformers are arranged at the outer sides of the bottom ends of the current transformers, the primary coil (10) of the current transformer is arranged in the current transformer, the secondary coil (11) of the current transformer is connected with the upper end of the primary coil (10) of the current transformer, the current outlet terminal (12) is connected with the secondary coil (11) of the current transformer through a lead (13), the current outlet terminal (12) is arranged at the outer end of the upper surface of the current transformer, the first connecting row (14) is connected with the adjacent current transformers, the second connecting row (15) is connected with a voltage transformer and a current transformer on one side, the third connecting row (16) is connected with a voltage transformer and a current transformer on the other side, the mounting base (17) is arranged at the bottom ends of the voltage transformer and the current transformer.
2. The outdoor 35kV measures with V type wiring combination transformer of claim 1, characterized in that: the epoxy resin layer (3) is poured into a voltage transformer unit and a current transformer unit, and a polyurethane layer (4) is uniformly sprayed on the outer surface of the epoxy resin layer (3).
3. The outdoor 35kV metering V-shaped wiring combined transformer as claimed in claim 1 or 2, characterized in that: the voltage transformers and the current transformers cast on the epoxy resin layer (3) are two, and the current transformers cast on the epoxy resin layer (3) are arranged between the voltage transformers.
4. The outdoor 35kV measures with V type wiring combination transformer of claim 3, characterized in that: and voltage transformers are arranged at two ends of the outer side of the mounting base (17), and the voltage transformers on the mounting base (17) are connected in a split structure.
5. The outdoor 35kV measures with V type wiring combination transformer of claim 1, characterized in that: the number of the iron cores (6) is two, and the iron cores (6) are annular.
6. The outdoor 35kV measures with V type wiring combination transformer of claim 1, characterized in that: the number of the current transformer secondary coils (11) is two, and the current transformer primary coil (10) and the current transformer secondary coil (11) adopt iron-based microcrystalline alloy as magnetic cores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022607899.7U CN214099387U (en) | 2020-11-12 | 2020-11-12 | V-shaped wiring combined transformer for outdoor 35kV metering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022607899.7U CN214099387U (en) | 2020-11-12 | 2020-11-12 | V-shaped wiring combined transformer for outdoor 35kV metering |
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| Publication Number | Publication Date |
|---|---|
| CN214099387U true CN214099387U (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022607899.7U Active CN214099387U (en) | 2020-11-12 | 2020-11-12 | V-shaped wiring combined transformer for outdoor 35kV metering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214099387U (en) |
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2020
- 2020-11-12 CN CN202022607899.7U patent/CN214099387U/en active Active
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