CN107845496B - Lightning protection transformer - Google Patents
Lightning protection transformer Download PDFInfo
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- CN107845496B CN107845496B CN201711113189.5A CN201711113189A CN107845496B CN 107845496 B CN107845496 B CN 107845496B CN 201711113189 A CN201711113189 A CN 201711113189A CN 107845496 B CN107845496 B CN 107845496B
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- lightning
- shielding layer
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- primary coil
- secondary coil
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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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or vehicle train, e.g. pedals
- B61L1/20—Safety arrangements for preventing or indicating malfunction of the device, e.g. by leakage current, by lightning
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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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
-
- 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
- H01F27/288—Shielding
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Regulation Of General Use Transformers (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention relates to a lightning protection transformer, which is arranged on a signal transmission channel of railway track indoor equipment and outdoor equipment, and comprises: the LED coil comprises a primary coil, a secondary coil and an ED type iron core, wherein the primary coil and the secondary coil are wound in the center of the ED type iron core; the primary coil is wound with a circle of inner anti-lightning induction shielding layer before winding, and is wound with a circle of outer anti-lightning induction shielding layer after winding; and the inner lightning-resistant induction shielding layer and the outer lightning-resistant induction shielding layer are electrically connected with the ED type iron core and are grounded. Through the technical scheme of the invention, the problem that the lightning protection effect is influenced by the low transfer coefficient of the lightning protection transformer caused by the self structure of the lightning protection transformer in the prior art can be solved.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a lightning protection transformer.
Background
The track transformer for railway signals is used for transmitting or receiving control signals to or from the steel rail. At present, a railway transformer for railway signals consists of a common coil and an iron core, when the coil is manufactured, a primary coil and a secondary coil are wound on the same coil framework, and a lightning-resistant device is not added in the coil. The railway power supply system and the steel rail in the area with frequent lightning are easily interfered by lightning, so that the track transformer and other equipment are damaged, and the railway driving safety is seriously influenced.
A digital signal cable communication channel between outdoor equipment and indoor equipment of a high-speed rail ZPW-2000A track circuit is one of main lightning discharging ways, and if the channel is subjected to strong lightning impact, large-area damage of a transmitter and a receiver of the ZPW-2000A track circuit is often caused, and the transportation efficiency of a railway is seriously influenced. Therefore, lightning protection for the channel is essential.
The R50 type lightning protection transformer and the R50 type lightning protection transformer adopted by the ZPW-2000A track circuit system at present have the following defects: because the R50 type transformer adopts the R type iron core, the transfer coefficient of the lightning protection transformer is low. The common-mode lightning invades the track circuit system, forms the high potential to the ground on the circuit, what the lightning protection transformer mainly protects is this kind of vertical high potential to the ground, and the transfer coefficient refers to the ratio between the high voltage of thunder and lightning input side and the low voltage of output side, and the low transfer coefficient can lead to the output side the electric potential still to be higher than the equipment to the magnitude of ground insulation level, has increased the danger of equipment to ground insulation breakdown.
Disclosure of Invention
In view of the above, the present invention is directed to overcome the defects in the prior art, and provides a lightning protection transformer, which is suitable for a high-speed rail ZPW-2000A track circuit transmission channel, so as to solve the problem in the prior art that the low transfer coefficient of the lightning protection transformer caused by the structure of the lightning protection transformer affects the lightning protection effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
a lightning protection transformer installed on a signal transmission channel of a railway track indoor device and an outdoor device, comprising: a primary coil, a secondary coil, and an ED-type core, wherein,
the primary coil and the secondary coil are wound in the center of the ED type iron core, so that the transmission performance of the ED type iron core is ensured; the primary coil is wound with a circle of inner anti-lightning induction shielding layer before winding, and is wound with a circle of outer anti-lightning induction shielding layer after winding; and the inner lightning-resistant induction shielding layer and the outer lightning-resistant induction shielding layer are electrically connected with the ED type iron core and are grounded.
Preferably, a framework is arranged in the center of the ED type iron core, and the secondary coil and the primary coil are sequentially wound on the framework; the primary coil is wound with a circle of inner lightning-resistant induction shielding layer on the framework before winding, and is wound with a circle of outer lightning-resistant induction shielding layer after winding.
Preferably, before winding, the secondary coil is wound with an insulating tape on the framework, and after winding, the insulating tape is wound outside the secondary coil
Preferably, the primary coil is provided with an outgoing line electrically connected with the indoor equipment, and the secondary coil is provided with an outgoing line electrically connected with the outdoor equipment.
Preferably, the head end and the tail end of the primary coil are led out from the same side and are electrically connected with the indoor equipment after being led out; and the head end and the tail end of the secondary coil are led out from the same side and are electrically connected with the outdoor equipment after being led out.
Preferably, the number of layers of the primary coil and the secondary coil is the same, and the winding directions are the same.
Preferably, the diameter of the primary coil is phi 0.53mm, and the number of turns is 150; the wire diameter of the secondary coil is phi 0.53mm, and the number of turns is 156.
Preferably, the inner lightning induction resistant shielding layer and the outer lightning induction resistant shielding layer are formed by metal foils completely wrapped by insulating materials, and the metal foils are connected with ground wire outgoing lines.
Preferably, the thickness of the inner lightning induction resistant shielding layer and the thickness of the outer lightning induction resistant shielding layer are both 0.1 mm.
Preferably, the ground wire outgoing lines of the inner lightning-resistant induction shielding layer and the outer lightning-resistant induction shielding layer are conducted with the grounding end of the complete lightning protection transformer.
By adopting the technical scheme, the invention at least has the following beneficial effects:
according to the technical scheme, the lightning protection transformer provided by the invention adopts the ED type iron core, the primary coil and the secondary coil are wound in the center of the ED type iron core, the primary coil is wound with the inner lightning resistance induction shielding layer in a circle before winding, and the outer lightning resistance induction shielding layer is wound in a circle after winding.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 the drawings without creative efforts.
Fig. 1 is a schematic view illustrating an installation of a lightning protection transformer according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a lightning protection transformer according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
The first embodiment,
Referring to fig. 1, the lightning protection transformer provided in this embodiment is installed on a signal transmission channel of indoor equipment and outdoor equipment of a railway track, and includes: a primary coil 1, a secondary coil 2, and an ED-type core 3, wherein,
the primary coil 1 and the secondary coil 2 are wound in the center of the ED type iron core 3; the primary coil 1 is wound with a circle of inner anti-lightning induction shielding layer before winding, and is wound with a circle of outer anti-lightning induction shielding layer after winding; the inner lightning induction resistant shielding layer and the outer lightning induction resistant shielding layer are electrically connected with the ED type iron core 3 and are grounded.
According to the technical scheme, the lightning protection transformer provided by the invention adopts the ED type iron core, the primary coil and the secondary coil are wound in the center of the ED type iron core, the primary coil is wound with the inner lightning resistance induction shielding layer in a circle before winding, and the outer lightning resistance induction shielding layer is wound in a circle after winding.
Example II,
The lightning protection transformer that this embodiment provided installs on the signal transmission channel of railway rails indoor installation and outdoor installation, includes: a primary coil 1, a secondary coil 2, and an ED-type core 3, wherein,
the primary coil 1 and the secondary coil 2 are wound in the center of the ED type iron core 3; the primary coil 1 is wound with a circle of inner anti-lightning induction shielding layer before winding, and is wound with a circle of outer anti-lightning induction shielding layer after winding; the inner lightning induction resistant shielding layer and the outer lightning induction resistant shielding layer are electrically connected with the ED type iron core 3 and are grounded.
Preferably, a framework is arranged in the center of the ED type iron core, and the secondary coil and the primary coil are sequentially wound on the framework; the primary coil is wound with a circle of inner lightning-resistant induction shielding layer on the framework before winding, and is wound with a circle of outer lightning-resistant induction shielding layer after winding.
Preferably, before winding, the secondary coil is wound with an insulating tape on the framework, and after winding is finished, the insulating tape is wound outside the secondary coil.
As can be seen from the above technical solutions, compared with the first embodiment, the lightning protection transformer provided in this embodiment has the following advantages: a framework is arranged in the center of the ED type iron core, and the primary coil and the secondary coil are wound on the central framework; the primary coil is wound with a circle of inner lightning-resistant induction shielding layer on the framework before winding, and is wound with a circle of outer lightning-resistant induction shielding layer after winding, so that an ED type iron core is adopted.
The advantage of embodiment one is compared in this embodiment, sets up the skeleton in the central authorities of ED type iron core, and the coiling of the primary coil of being convenient for and secondary coil can be according to the engineering needs, different numbers of turns and the number of layers of coiling, can satisfy different operational environment requirements.
Example III,
The lightning protection transformer that this embodiment provided installs on the signal transmission channel of railway rails indoor installation and outdoor installation, includes: a primary coil 1, a secondary coil 2, and an ED-type core 3, wherein,
the primary coil 1 and the secondary coil 2 are wound in the center of the ED type iron core 3; the primary coil 1 is wound with a circle of inner anti-lightning induction shielding layer before winding, and is wound with a circle of outer anti-lightning induction shielding layer after winding; the inner lightning induction resistant shielding layer and the outer lightning induction resistant shielding layer are electrically connected with the ED type iron core 3 and are grounded.
Preferably, a framework is arranged in the center of the ED type iron core, and the secondary coil and the primary coil are sequentially wound on the framework; the primary coil is wound with a circle of inner lightning-resistant induction shielding layer on the framework before winding, and is wound with a circle of outer lightning-resistant induction shielding layer after winding.
Referring to fig. 2, preferably, the primary coil 1 is provided with lead wires 11 and 12 electrically connected to indoor equipment, and the secondary coil 2 is provided with lead wires 21 and 22 electrically connected to outdoor equipment.
Preferably, the head end and the tail end of the primary coil are led out from the same side and are electrically connected with the indoor equipment after being led out; and the head end and the tail end of the secondary coil are led out from the same side and are electrically connected with the outdoor equipment after being led out.
As can be seen from the above technical solutions, compared with the second embodiment, the lightning protection transformer provided in this embodiment has the following advantages: the primary coil is provided with a leading-out wire electrically connected with the indoor equipment, and the secondary coil is provided with a leading-out wire electrically connected with the outdoor equipment.
The advantage of this embodiment compared with the second embodiment is that, because the lead wire for connecting the indoor equipment and the outdoor equipment is provided, the indoor equipment and the outdoor equipment can be electrically connected conveniently, and the installation in the railway track circuit is facilitated.
Example four,
The lightning protection transformer that this embodiment provided installs on the signal transmission channel of railway rails indoor installation and outdoor installation, includes: a primary coil 1, a secondary coil 2, and an ED-type core 3, wherein,
the primary coil 1 and the secondary coil 2 are wound in the center of the ED type iron core 3; the primary coil 1 is wound with a circle of inner anti-lightning induction shielding layer before winding, and is wound with a circle of outer anti-lightning induction shielding layer after winding; the inner lightning induction resistant shielding layer and the outer lightning induction resistant shielding layer are electrically connected with the ED type iron core 3 and are grounded.
Preferably, the secondary coil and the primary coil are sequentially wound on the central framework of the ED type iron core; the primary coil is wound with a circle of inner lightning-resistant induction shielding layer on the framework before winding, and is wound with a circle of outer lightning-resistant induction shielding layer after winding.
Preferably, the primary coil is provided with an outgoing line electrically connected with the indoor equipment, and the secondary coil is provided with an outgoing line electrically connected with the outdoor equipment.
Preferably, the head end and the tail end of the primary coil are led out from the same side and are electrically connected with the indoor equipment after being led out; and the head end and the tail end of the secondary coil are led out from the same side and are electrically connected with the outdoor equipment after being led out.
Preferably, the number of layers of the primary coil and the secondary coil is the same, and the winding directions are the same.
Preferably, the diameter of the primary coil is phi 0.53mm, and the number of turns is 150; the wire diameter of the secondary coil is phi 0.53mm, and the number of turns is 156.
As can be seen from the above technical solutions, compared with the third embodiment, the lightning protection transformer provided in this embodiment has the following advantages: the diameter of the primary coil is phi 0.53mm, and the number of turns is 150; the diameter of the secondary coil is phi 0.53mm, and the number of turns is 156. The lightning protection transformer has the advantage that the lightning protection effect of the lightning protection transformer can be further improved.
Example V,
The lightning protection transformer that this embodiment provided installs on the signal transmission channel of railway rails indoor installation and outdoor installation, includes: a primary coil 1, a secondary coil 2, and an ED-type core 3, wherein,
the primary coil 1 and the secondary coil 2 are wound in the center of the ED type iron core 3; the primary coil 1 is wound with a circle of inner anti-lightning induction shielding layer before winding, and is wound with a circle of outer anti-lightning induction shielding layer after winding; the inner lightning induction resistant shielding layer and the outer lightning induction resistant shielding layer are electrically connected with the ED type iron core 3 and are grounded.
Preferably, a framework is arranged in the center of the ED-type iron core 3, and the secondary coil and the primary coil are sequentially wound on the framework; the primary coil is wound with a circle of inner lightning-resistant induction shielding layer on the framework before winding, and is wound with a circle of outer lightning-resistant induction shielding layer after winding.
Preferably, the primary coil is provided with an outgoing line electrically connected with the indoor equipment, and the secondary coil is provided with an outgoing line electrically connected with the outdoor equipment.
Preferably, the head end and the tail end of the primary coil are led out from the same side and are electrically connected with the indoor equipment after being led out; and the head end and the tail end of the secondary coil are led out from the same side and are electrically connected with the outdoor equipment after being led out.
Preferably, the number of layers of the primary coil and the secondary coil is the same, and the winding directions are the same.
Preferably, the diameter of the primary coil is phi 0.53mm, and the number of turns is 150; the wire diameter of the secondary coil is phi 0.53mm, and the number of turns is 156.
Referring to fig. 2, the inner and outer lightning resistant inductive shields are preferably formed of a metal foil completely wrapped with an insulating material, and a ground lead 13 is connected to the metal foil.
Preferably, the thickness of the inner lightning induction resistant shielding layer and the thickness of the outer lightning induction resistant shielding layer are both 0.1 mm.
Preferably, the ground wire outgoing lines of the inner lightning-resistant induction shielding layer and the outer lightning-resistant induction shielding layer are conducted with the grounding end of the complete lightning protection transformer.
As can be seen from the above technical solutions, compared with the fourth embodiment, the lightning protection transformer provided in this embodiment has the following advantages: the lightning protection transformer has the advantages that the lightning protection effect of the lightning protection transformer can be further improved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims. The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
Claims (5)
1. The utility model provides a lightning protection transformer, installs on the signal transmission passageway of railway rails indoor unit and outdoor unit, its characterized in that includes: a primary coil, a secondary coil, and an ED-type core, wherein,
the primary coil and the secondary coil are wound in the center of the ED type iron core; the primary coil is wound with a circle of inner anti-lightning induction shielding layer before winding, and is wound with a circle of outer anti-lightning induction shielding layer after winding; the inner lightning-resistant induction shielding layer and the outer lightning-resistant induction shielding layer are electrically connected with the ED type iron core and are grounded; the inner lightning-resistant induction shielding layer and the outer lightning-resistant induction shielding layer are formed by metal foils completely wrapped by insulating materials, the metal foils are connected with ground wire outgoing lines, and the ground wire outgoing lines of the inner lightning-resistant induction shielding layer and the outer lightning-resistant induction shielding layer are communicated with the grounding end of the whole lightning protection transformer;
a framework is arranged in the center of the ED type iron core, and the secondary coil and the primary coil are sequentially wound on the framework; the primary coil is wound with a circle of inner lightning-resistant induction shielding layer on the framework before winding, and is wound with a circle of outer lightning-resistant induction shielding layer after winding;
the thickness of the inner lightning-resistant induction shielding layer and the thickness of the outer lightning-resistant induction shielding layer are both 0.1 mm;
the head end and the tail end of the primary coil are led out from the same side and are electrically connected with the indoor equipment after being led out; and the head end and the tail end of the secondary coil are led out from the same side and are electrically connected with the outdoor equipment after being led out.
2. The lightning protection transformer according to claim 1, wherein the secondary coil is wound with an insulating tape on the bobbin before winding, and the insulating tape is wound outside the secondary coil after winding.
3. The lightning protection transformer according to claim 1, wherein the primary coil is provided with a lead-out wire electrically connected to an indoor device, and the secondary coil is provided with a lead-out wire electrically connected to an outdoor device.
4. The lightning protection transformer of claim 1, wherein the primary coil and the secondary coil have the same number of layers and the same winding direction.
5. The lightning protection transformer according to claim 1, wherein the primary coil has a wire diameter of 0.53mm and a number of turns of 150; the wire diameter of the secondary coil is phi 0.53mm, and the number of turns is 156.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711113189.5A CN107845496B (en) | 2017-11-13 | 2017-11-13 | Lightning protection transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711113189.5A CN107845496B (en) | 2017-11-13 | 2017-11-13 | Lightning protection transformer |
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| Publication Number | Publication Date |
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| CN107845496A CN107845496A (en) | 2018-03-27 |
| CN107845496B true CN107845496B (en) | 2020-06-26 |
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| CN201711113189.5A Active CN107845496B (en) | 2017-11-13 | 2017-11-13 | Lightning protection transformer |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2243117Y (en) * | 1995-04-07 | 1996-12-18 | 中国铁路通信信号总公司西安器材研究所 | Anti-thunder transformer |
| CN1909313A (en) * | 2006-08-11 | 2007-02-07 | 上海铁大电信设备有限公司 | Integrated thunder protecting device for railway signal micro-electron equipment |
| CN204794062U (en) * | 2015-07-31 | 2015-11-18 | 沈阳铁路信号有限责任公司 | Lightning protection analog network dish that uses is moved to naked among frequency track circuit |
-
2017
- 2017-11-13 CN CN201711113189.5A patent/CN107845496B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2243117Y (en) * | 1995-04-07 | 1996-12-18 | 中国铁路通信信号总公司西安器材研究所 | Anti-thunder transformer |
| CN1909313A (en) * | 2006-08-11 | 2007-02-07 | 上海铁大电信设备有限公司 | Integrated thunder protecting device for railway signal micro-electron equipment |
| CN204794062U (en) * | 2015-07-31 | 2015-11-18 | 沈阳铁路信号有限责任公司 | Lightning protection analog network dish that uses is moved to naked among frequency track circuit |
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| CN107845496A (en) | 2018-03-27 |
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