CN116798739A - Combined transformer - Google Patents
Combined transformer Download PDFInfo
- Publication number
- CN116798739A CN116798739A CN202310824445.0A CN202310824445A CN116798739A CN 116798739 A CN116798739 A CN 116798739A CN 202310824445 A CN202310824445 A CN 202310824445A CN 116798739 A CN116798739 A CN 116798739A
- Authority
- CN
- China
- Prior art keywords
- voltage
- current
- storage cabinet
- oil storage
- shell
- 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.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims abstract description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 25
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 230000007704 transition Effects 0.000 claims abstract description 6
- 239000011258 core-shell material Substances 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000012212 insulator Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- 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
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/34—Combined voltage and current transformers
- H01F38/36—Constructions
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention relates to a combined transformer, which is characterized in that: the device comprises an expander, an upper oil storage cabinet shell, a lower oil storage cabinet shell, a porcelain bushing, a current secondary winding, a primary conductive rod, a current guide tube, an oil tank structure, a voltage iron core, a voltage primary winding, a voltage secondary winding, voltage outer insulation, a voltage shielding cover, a voltage guide tube and a guide round rod; the current and the voltage device body are respectively independent in a transformer product, the structure of the device body is clear, the device body is respectively independent in the product, the current and the voltage device body are respectively operated, do not influence each other and do not interfere each other, the current device body is fixed on a voltage oil tank through a transition piece, the voltage device body is fixed on a current oil storage tank through a fixed round rod, and meanwhile, equipotential is realized; the current and the voltage are integrated into a whole, the combined type current and voltage transformer is suitable for a small space area, all functions of the current and voltage transformer are contained, and the production cost is superior to that of the independent current and voltage transformer.
Description
Technical Field
The invention relates to the technical field of current and voltage transformers, in particular to a combined transformer.
Background
The combined transformer is actually a combination of a voltage transformer and a current transformer, and can be a combination of a voltage transformer and a current transformer, and is used for measuring single-phase power; the three-phase three-wire system can be a combination of two voltage transformers and two current transformers, and is used for measuring three-phase power according to a two-watt meter method in the three-phase three-wire system; or a combination of three voltage transformers and three current transformers for three-phase electrical measurement.
The combined transformer is used for separating the protection and measurement device from the high voltage and converting the current and voltage to be measured on the high voltage line into current and voltage signals with a certain accuracy suitable for the protection and measurement device. Is a combination of independent current and voltage transformer products.
Disclosure of Invention
The invention aims to solve the technical problem of providing a combined type transformer, which can solve the problem that the common voltage transformer and the current transformer adopt a split structure and occupy large space.
In order to solve the technical problems, the technical scheme of the invention is as follows: a combined transformer is characterized in that: the device comprises an expander, an upper oil storage cabinet shell, a lower oil storage cabinet shell, a porcelain bushing, a current secondary winding, a primary conductive rod, a current guide tube, an oil tank structure, a voltage iron core, a voltage primary winding, a voltage secondary winding, voltage outer insulation, a voltage shielding cover, a voltage guide tube and a guide round rod;
the upper oil conservator shell is connected with the lower oil conservator shell through a flange to form an oil conservator structure, and the bottom end opening of the lower oil conservator shell is arranged; the expander is arranged at the top end of the oil storage cabinet structure; the porcelain bushing is connected to the bottom end of the lower oil conservator shell along the vertical direction and is communicated with the lower oil conservator shell;
a current iron core is arranged in the upper oil storage cabinet shell and the lower oil storage cabinet shell in the oil storage cabinet structure respectively, a current iron core shell is wrapped on the current iron core, a current wrapping insulator is wrapped on the outer contour of the current iron core shell, and a gap for accommodating a primary conductive rod to pass through is reserved between the pair of current iron cores; the primary conductive rod is horizontally arranged in the oil storage cabinet structure, and two ends of the primary conductive rod penetrate through the oil storage cabinet structure; the current secondary winding is wound on the primary wire rod; the top end of the current guide tube extends to the oil storage cabinet structure and is connected to the current secondary winding, the bottom end of the current guide tube extends to the bottom end of the porcelain sleeve and is fixed on the inner side wall of the porcelain sleeve through a hoop, the bottom end of the current guide tube is connected to the oil tank structure through a transition piece, and the outer contour of the current guide tube is wrapped with a current capacitance screen;
the oil tank structure is connected to the bottom end of the porcelain bushing and is communicated with the inner cavity of the porcelain bushing; the voltage iron core is arranged in the oil tank structure horizontally, and the voltage secondary winding is wound on the outer side of the voltage iron core; the voltage primary winding is wound on the outer side of the voltage secondary winding; the voltage shielding cover is arranged on the outer side of the voltage primary winding; the voltage outer coating insulation is wrapped on the outer side of the voltage shielding cover; the bottom end of the voltage lead tube is connected to the voltage secondary winding, the top end of the voltage lead tube extends to the edge of the top end of the porcelain sleeve, and the outer contour of the voltage lead tube is wrapped with a voltage capacitor screen; the guide round bar is arranged in the voltage guide tube along the axis direction of the voltage guide tube, the top end of the guide round bar is connected with the bottom end of a fixed round bar, and the top end of the fixed round bar is connected to the oil storage cabinet structure.
Further, the end part of the primary conductive rod is provided with a current primary switching component.
Furthermore, the current lead tube and the voltage lead tube are all obliquely arranged in the porcelain sleeve.
The invention has the advantages that:
1) According to the invention, the current and the voltage device body are respectively independent in a transformer product, the structure of the device body is clear, the device body is respectively independent in the transformer product, the current and the voltage device body are respectively operated without mutual influence and mutual interference, the current device body is fixed on a voltage oil tank through a transition piece, the voltage device body is fixed on a current oil storage tank through a fixed round bar, and meanwhile, equipotential is realized; the current and the voltage are integrated into a whole, the combined type current and voltage transformer is suitable for a small space area, all functions of the current and voltage transformer are contained, and the production cost is superior to that of the independent current and voltage transformer.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a schematic front view of a combined transformer according to the present invention.
Fig. 2 is a schematic side view of a combined transformer of the present invention.
Fig. 3 to 4 are partial enlarged views of a combined transformer according to the present invention.
Description of the embodiments
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The combined transformer as shown in fig. 1 to 4 comprises an expander 1, an upper oil tank shell 2, a lower oil tank shell 3, a porcelain bushing 4, a current secondary winding 5, a primary conductive rod 6, a current guide tube 7, an oil tank structure 8, a voltage iron core 9, a voltage primary winding 10, a voltage secondary winding 11, a voltage outer insulation 12, a voltage shielding cover 13, a voltage guide tube 14 and a guide round rod 15.
The upper oil conservator shell 2 and the lower oil conservator shell 3 are connected through a flange to form an oil conservator structure, and the bottom end opening of the lower oil conservator shell 3 is arranged; the expander 1 is arranged at the top end of the oil storage cabinet structure; the porcelain bushing 4 is connected to the bottom end of the lower oil conservator shell 3 along the vertical direction and is communicated with the lower oil conservator shell 3.
A current iron core 16 is respectively arranged in the upper oil conservator shell 2 and the lower oil conservator shell 3 in the oil conservator structure, a current iron core housing 17 is wrapped on the current iron core 16, a current outer wrapping insulator 18 is wrapped on the outer contour of the current iron core housing 17, and a gap for accommodating the primary conductive rod 6 to pass through is reserved between the pair of current iron cores 16; the primary conductive rod 6 is horizontally arranged in the oil storage cabinet structure, and two ends of the primary conductive rod 6 penetrate through the oil storage cabinet structure; the current secondary winding 5 is wound on the primary wire rod 6; the top of the current lead tube 7 extends to the oil storage cabinet structure and is connected to the current secondary winding 5, the bottom end of the current lead tube 7 extends to the bottom end of the porcelain sleeve 4 and is fixed on the inner side wall of the porcelain sleeve 4 through a hoop, the bottom end of the current lead tube 7 is connected to the oil tank structure 8 through a transition piece, and a current capacitance screen 19 is wrapped on the outer contour of the current lead tube 7.
The oil tank structure 8 is connected to the bottom end of the porcelain bushing 4 and is communicated with the inner cavity of the porcelain bushing 4; the voltage iron core 9 is horizontally arranged in the oil tank structure 8, and the voltage secondary winding 11 is wound on the outer side of the voltage iron core 9; the voltage primary winding 10 is wound outside the voltage secondary winding 11; the voltage shield 13 is provided outside the voltage primary winding 10; the voltage outer-wrapping insulation 12 wraps the outer side of the voltage shielding cover 13; the bottom end of the voltage lead tube 14 is connected to the voltage secondary winding 11, the top end of the voltage lead tube 14 extends to the edge of the top end of the porcelain sleeve 4, and the voltage capacitor screen 20 is wrapped on the outer contour of the voltage lead tube 14; the guiding round bar 15 is arranged in the voltage guiding tube 14 along the axis direction of the voltage guiding tube 14, the top end of the guiding round bar 15 is connected with the bottom end of a fixed round bar 21, and the top end of the fixed round bar 21 is connected to the oil storage cabinet structure.
The end of the primary conductive rod 6 is provided with a current primary switching element.
The current lead tube 7 and the voltage lead tube 14 are both inclined in the porcelain bushing 4.
The working principle of the invention is as follows: the current and the voltage device body are respectively independent in a transformer product, the structure of the device body is clear, the device body is respectively independent in the product, the current and the voltage device body are respectively operated, do not influence each other and do not interfere each other, the current device body is fixed on a voltage oil tank through a transition piece, the voltage device body is fixed on a current oil storage tank through a fixed round rod, and meanwhile, equipotential is realized; the current and the voltage are integrated into a whole, the combined type current and voltage transformer is suitable for a small space area, all functions of the current and voltage transformer are contained, and the production cost is superior to that of the independent current and voltage transformer.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. A combination type mutual inductor, which is characterized in that: the device comprises an expander, an upper oil storage cabinet shell, a lower oil storage cabinet shell, a porcelain bushing, a current secondary winding, a primary conductive rod, a current guide tube, an oil tank structure, a voltage iron core, a voltage primary winding, a voltage secondary winding, voltage outer insulation, a voltage shielding cover, a voltage guide tube and a guide round rod;
the upper oil conservator shell is connected with the lower oil conservator shell through a flange to form an oil conservator structure, and the bottom end opening of the lower oil conservator shell is arranged; the expander is arranged at the top end of the oil storage cabinet structure; the porcelain bushing is connected to the bottom end of the lower oil conservator shell along the vertical direction and is communicated with the lower oil conservator shell;
a current iron core is arranged in the upper oil storage cabinet shell and the lower oil storage cabinet shell in the oil storage cabinet structure respectively, a current iron core shell is wrapped on the current iron core, a current wrapping insulator is wrapped on the outer contour of the current iron core shell, and a gap for accommodating a primary conductive rod to pass through is reserved between the pair of current iron cores; the primary conductive rod is horizontally arranged in the oil storage cabinet structure, and two ends of the primary conductive rod penetrate through the oil storage cabinet structure; the current secondary winding is wound on the primary wire rod; the top end of the current guide tube extends to the oil storage cabinet structure and is connected to the current secondary winding, the bottom end of the current guide tube extends to the bottom end of the porcelain sleeve and is fixed on the inner side wall of the porcelain sleeve through a hoop, the bottom end of the current guide tube is connected to the oil tank structure through a transition piece, and the outer contour of the current guide tube is wrapped with a current capacitance screen;
the oil tank structure is connected to the bottom end of the porcelain bushing and is communicated with the inner cavity of the porcelain bushing; the voltage iron core is arranged in the oil tank structure horizontally, and the voltage secondary winding is wound on the outer side of the voltage iron core; the voltage primary winding is wound on the outer side of the voltage secondary winding; the voltage shielding cover is arranged on the outer side of the voltage primary winding; the voltage outer coating insulation is wrapped on the outer side of the voltage shielding cover; the bottom end of the voltage lead tube is connected to the voltage secondary winding, the top end of the voltage lead tube extends to the edge of the top end of the porcelain sleeve, and the outer contour of the voltage lead tube is wrapped with a voltage capacitor screen; the guide round bar is arranged in the voltage guide tube along the axis direction of the voltage guide tube, the top end of the guide round bar is connected with the bottom end of a fixed round bar, and the top end of the fixed round bar is connected to the oil storage cabinet structure.
2. A modular transformer as claimed in claim 1, wherein: the end part of the primary conductive rod is provided with a current primary switching component.
3. A modular transformer as claimed in claim 1, wherein: the current lead tube and the voltage lead tube are all obliquely arranged in the porcelain sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310824445.0A CN116798739A (en) | 2023-07-06 | 2023-07-06 | Combined transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310824445.0A CN116798739A (en) | 2023-07-06 | 2023-07-06 | Combined transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116798739A true CN116798739A (en) | 2023-09-22 |
Family
ID=88034726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310824445.0A Pending CN116798739A (en) | 2023-07-06 | 2023-07-06 | Combined transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116798739A (en) |
-
2023
- 2023-07-06 CN CN202310824445.0A patent/CN116798739A/en active Pending
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