CN203800460U - Transformer arrester combined handcart - Google Patents
Transformer arrester combined handcart Download PDFInfo
- Publication number
- CN203800460U CN203800460U CN201420213620.9U CN201420213620U CN203800460U CN 203800460 U CN203800460 U CN 203800460U CN 201420213620 U CN201420213620 U CN 201420213620U CN 203800460 U CN203800460 U CN 203800460U
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- China
- Prior art keywords
- arrester
- lightning
- handcart
- voltage transformer
- transformer
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- Expired - Fee Related
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- 238000004804 winding Methods 0.000 claims abstract description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- 230000001012 protector Effects 0.000 claims abstract description 6
- 239000004020 conductor Substances 0.000 claims description 9
- 239000012212 insulator Substances 0.000 claims description 4
- 241000722921 Tulipa gesneriana Species 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000009466 transformation Effects 0.000 abstract 1
- 230000005684 electric field Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 208000012260 Accidental injury Diseases 0.000 description 1
- 208000025274 Lightning injury Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
The utility model discloses a transformer arrester combined handcart, which comprises a voltage transformer, an arrester, a grounding part, a primary electrical part and an operation control and instrument panel fixed on the handcart. The voltage transformer comprises a primary winding and a secondary winding; the arrester comprises a flash-grounding device, a down lead and a grounding body; the primary electrical part comprises an insulated base, a connection copper busbar, an insulated contact arm, a fuse and a tulip contact, the fuse is arranged inside the insulated contact arm and is connected with the primary winding of the voltage transformer via the connection copper busbar, and the tulip contact at the front end of the insulated contact arm is connected with the flash-grounding device of the arrester. The secondary winding of the voltage transformer is grounded, or is connected with a measurement instrument or connected with a relay protector. The grounding body of the arrester is grounded. The arrester and the voltage transformer are combined to be arranged inside a switch cabinet, lightning strike can be avoided, overvoltage protection can be provided, and power transformation is safe. The fuse which is a device for protecting the voltage transformer set is arranged inside the insulated contact arm, and splashing of broken pieces when the fuse is burst can be prevented.
Description
Technical Field
The utility model relates to an electric power system's interchange metal-enclosed switchgear specifically says that a mutual-inductor arrester combination handcart that uses in 40.5kV exchanges switchgear.
Background
The handcart in the switch equipment has the function of providing a low-voltage signal for a secondary line of a power system to complete the protection or measurement function. The structure of the combined handcart with complete functions is reasonably improved, and the structural space of the switch cabinet can be greatly reduced.
Disclosure of Invention
To the problem, the utility model aims at providing a mutual-inductor arrester combination handcart, compact structure installs in exchanging metal-enclosed switchgear, can save the inner space of cubical switchboard greatly on realizing its basic function's basis, makes the volume reduction of cubical switchboard.
In order to achieve the purpose, the utility model adopts the following technical proposal: a mutual inductor and arrester combined handcart comprises a voltage mutual inductor, an arrester, a grounding part, a primary electric part, a control and instrument panel, a frame and a handle, wherein the voltage mutual inductor, the arrester, the grounding part, the primary electric part and the control and instrument panel are integrally fixed on the frame; wherein, voltage transformer includes primary winding and secondary winding, and the arrester includes the arrester, connects downlead, grounding body, and first electric part includes insulator foot, connects the copper bar, the insulating arm that touches, fuse, plum blossom contact, and the fuse is installed inside the insulating arm that touches, is connected through connecting copper bar and voltage transformer's primary winding, and the plum blossom contact of insulating arm front end touches and the arrester of arrester is connected.
The secondary winding of the voltage transformer is grounded, or is connected with a measuring instrument, or is connected with a relay protector, and takes one form; the grounding body of the lightning arrester is connected with the grounding part.
The bottom of the frame is provided with handcart wheels and front guide wheels, the front of the frame is provided with a vehicle door and a valve pressure rod, and the control and instrument panel is fixed on the same side position with the vehicle door.
The insulating arm of touching is installed on insulator foot, and insulator foot fixes on controlling and instrument panel.
An operating shaft handle, an instrument panel, a nameplate, a counter and a secondary plug are arranged on the control and instrument panel.
The voltage transformer is electromagnetic, or electronic, or photoelectric.
The lightning arrester is one of lightning rod, lightning conductor, lightning strip and lightning net.
The utility model discloses owing to take above technical scheme, it has following advantage: 1. the utility model discloses the security is strong, adorns the arrester in an electrical system, can avoid the thunderbolt, protection metal exchanges looped netowrk switchgear's transformer safety. And the voltage transformer is combined in a primary electric system, so that the transformer can be transformed conveniently, and the overvoltage burning of the instrument and accidental injury of an operator can be avoided. 2. The fuse protector of the voltage transformer group is arranged in the insulating contact arm, and once the fuse protector is burst, fragments can be prevented from splashing. 3. The arrester and the voltage transformer are mounted on the same handcart, so that the maintenance is convenient and the safety is higher. 4. The looped network switch equipment has the advantages of strong set, small volume, no combustion and explosion hazard and reliable five-prevention function.
Drawings
Fig. 1 is a side sectional view of the combined handcart of the utility model.
Fig. 2 is a front view of the combined handcart of the utility model.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
The handcart has the function of providing a low-voltage signal for a secondary line of an electric power system to complete a protection or measurement function, and particularly has the functions of voltage protection and lightning stroke protection for a combined handcart comprising primary electricity, a lightning arrester and a voltage transformer.
The lightning arrester has the lightning protection function that the lightning arrester can guide the lightning from the upper part of a protection object to the lightning arrester and safely discharge the lightning into the ground through the lightning arrester, so that the lightning guiding performance and the current discharging performance of the lightning arrester are very important. The lightning arrester for preventing direct lightning is generally composed of three parts, namely a lightning receptor, a down conductor and a grounding body; the lightning receptor is divided into a lightning rod, a lightning conductor, a lightning strip and a lightning net. The lightning protection principle of taking a lightning rod as a lightning receptor is as follows: the lightning rod is connected underground through a lead, forms an equal potential difference with the ground, and makes the lightning cloud electric field with the electric field intensity increased to a limit value distorted by utilizing the height of the lightning rod, starts ionization and performs descending pilot discharge; the lightning rod generates point discharge under the action of a strong electric field to form upward pilot discharge; the two meet to form a lightning path, and then the lightning path is discharged to the ground, so that the lightning protection effect is achieved.
The lightning arrester converts high voltage into standard secondary voltage of 100V or lower level in proportion for use in protecting, metering and instrument devices. Meanwhile, the high voltage can be isolated from the electrical workers by using the voltage transformer. The voltage transformer is an indispensable electrical appliance for power transmission and supply systems such as power plants and substations.
Voltage transformers and transformers are very similar and are used to transform the voltage on a line. The voltage transformer is a transformer with iron core. The two windings are arranged on or wound on the iron core, and the two windings and the iron core are insulated, so that the two windings and the iron core are electrically isolated. When a voltage is applied to the primary winding, a magnetic flux is generated in the core, and according to the law of electromagnetic induction, a secondary voltage is generated in the secondary winding. The turns of the primary winding or the secondary winding are changed to generate different ratios of the primary voltage to the secondary voltage, so that voltage transformers with different ratios can be formed. The voltage transformer scales the high voltage to a low voltage, i.e. 100V. The primary winding of the voltage transformer is connected in parallel with a primary system (a line voltage circuit of a power system) and the secondary winding is connected with a measuring instrument, a relay and the like. Therefore, when measuring the voltage on the high-voltage line, although the primary voltage is high, the secondary voltage is low, and the safety of operators and instruments can be ensured. Voltage transformers are mainly electromagnetic (capacitive voltage transformers are widely used) and are also non-electromagnetic, such as electronic or photoelectric.
The impedance of the voltage transformer itself is small, and once the secondary side (secondary winding) is short-circuited, the current will increase rapidly to burn the coil. Therefore, the primary side (primary winding) of the voltage transformer needs to be connected with a fuse, and the secondary side is reliably grounded, so that personal and equipment accidents caused by high potential to the ground of the secondary side when the original secondary side is damaged in an insulation way are avoided.
Therefore, the utility model provides a handcart, as shown in fig. 1, 2, included voltage transformer 1, arrester 2, ground connection part 3, once electric part 4, control and reach instrument panel 5 and frame 6. Wherein the voltage transformer 1, the lightning arrester 2, the grounding part 3, the primary electric part 4 and the control and instrument panel 5 form a whole body and are integrally fixed on a vehicle frame 6 with handcart wheels 61 and front guide wheels 62 at the bottom. A door 63 and a shutter lever 64 are provided on the front surface of the frame 6, the console and instrument panel 5 is fixed to the same side position as the door, and the console and instrument panel 5 is provided with an operating shaft handle 51, an instrument panel 52, a name plate 53, a counter 54, and a secondary plug 55.
The primary electric part 4 comprises an insulating base 41, a connecting copper bar 42, an insulating contact arm 43, a fuse 44 and a tulip contact 45. The insulated contact arm 43 is mounted on the insulated base 41, which is fixed on the control and instrument panel 5; the fuse 44 is mounted inside the insulating contact arm 43; the other end of the connecting copper bar 42 is connected to the voltage transformer 1; the front end of the insulated contact arm 43 is connected with a plum blossom contact 45; the lightning receptor comprised by the lightning arrester 2 is connected to the tulip contact 45. The lightning arrester 2 further comprises a down conductor 22 and a grounding body 23, wherein the lightning arrester 21 is connected with the down conductor, the down conductor is connected with the grounding body, and the grounding body is fixed on the vehicle frame 6 and is connected with the grounding part 3. The voltage transformer 1 is fixed on the vehicle frame 6 through the transformer bracket 11, the primary winding 12 of the voltage transformer 1 is connected with the connecting copper bar 42 and is electrically communicated with the fuse 44 through the connecting copper bar 42, and the secondary winding 13 is reliably grounded or connected with a measuring instrument or a relay protector. The voltage transformer is mainly electromagnetic, electronic or photoelectric.
As described above, the fuse 44 for protecting the voltage transformer is installed inside the insulating contact arm 43, and when the voltage transformer has an excessively high voltage, the fuse 44 may explode inside the insulating contact arm 43 to prevent fragments from being scattered and prevent an accident from being enlarged.
A combined lightning arrester and voltage transformer handcart, wherein the lightning arrester can lead the lightning from the upper side of the protection object to the lightning arrester and safely discharge the lightning into the ground through the lightning arrester. The lightning arrester is divided into lightning rod, lightning conductor, lightning strip and lightning net. Lightning rods are most common. The lightning rod is connected underground through a lead, forms an equal potential difference with the ground, and makes the lightning cloud electric field with the electric field intensity increased to a limit value distorted by utilizing the height of the lightning rod, starts ionization and performs descending pilot discharge; the lightning rod generates point discharge under the action of a strong electric field to form upward pilot discharge; the two meet to form a lightning path, and then the lightning path is discharged to the ground, so that the lightning protection effect is achieved. Once the secondary winding of the voltage transformer is short-circuited, a fuse connected with the primary winding is immediately fused to protect a primary electric part, so that personal and equipment accidents caused by high potential to the ground on the secondary side are avoided when the primary and secondary sides are insulated and damaged. The arrester and the voltage transformer are mounted on the same handcart, so that the maintenance is convenient and the safety is higher. Under normal use conditions, the maintenance is not needed within 10-20 years, but due to the fact that the use environment conditions of most users are greatly different, necessary inspection and maintenance work is still needed usually. The handcart is used in 40.5kV alternating current switch equipment, provides a low-voltage signal for a secondary circuit of a power system, and realizes a protection or measurement function.
Claims (7)
1. The utility model provides a mutual-inductor arrester combination handcart which characterized in that: comprises a voltage transformer (1), a lightning arrester (2), a grounding part (3), a primary electric part (4) and a control and instrument panel (5) which are integrally fixed on a frame (6); wherein,
the voltage transformer (1) comprises a primary winding (12) and a secondary winding (13),
the lightning arrester (2) comprises a lightning arrester (21), a down conductor (22) and a grounding body (23),
primary electric part (4) include insulator foot (41), connect copper bar (42), insulating contact arm (43), fuse (44), plum blossom contact (45), and fuse (44) are installed inside insulating contact arm (43), are connected through primary winding (12) of connecting copper bar (42) and voltage transformer (1), and plum blossom contact (45) and lightning arrester (21) of lightning arrester (2) front end of insulating contact arm (43) are connected.
2. The transformer arrester combination handcart of claim 1, characterized in that: the secondary winding (13) of the voltage transformer (1) is grounded, or is connected with a measuring instrument, or is connected with a relay protector, and takes one form; the grounding body (23) of the lightning arrester (2) is connected with the grounding part (3).
3. The transformer arrester combination handcart of claim 1, characterized in that: the bottom of the frame (6) is provided with handcart wheels (61) and front guide wheels (62), the front of the frame is provided with a vehicle door (63) and a valve pressure rod (64), and the control and instrument panel (5) is fixed on the same side position with the vehicle door.
4. The transformer arrester combination handcart of claim 1, characterized in that: the insulated contact arm (43) is mounted on an insulated base (41), and the insulated base (41) is fixed on the control and instrument panel (5).
5. The transformer arrester combined handcart according to claim 1, 3 or 4, characterized in that: an operating shaft handle (51), an instrument panel (52), a nameplate (53), a counter (54) and a secondary plug (55) are arranged on the control and instrument panel (5).
6. The transformer arrester combined handcart according to claim 1, 3 or 4, characterized in that: the voltage transformer (1) is electromagnetic, electronic or photoelectric.
7. The transformer arrester combination handcart of claim 1, characterized in that: the lightning arrester (2) is provided with a lightning arrester (21) in one of the forms of a lightning rod, a lightning conductor, a lightning strip and a lightning net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213620.9U CN203800460U (en) | 2014-04-28 | 2014-04-28 | Transformer arrester combined handcart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213620.9U CN203800460U (en) | 2014-04-28 | 2014-04-28 | Transformer arrester combined handcart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203800460U true CN203800460U (en) | 2014-08-27 |
Family
ID=51382649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420213620.9U Expired - Fee Related CN203800460U (en) | 2014-04-28 | 2014-04-28 | Transformer arrester combined handcart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203800460U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108388157A (en) * | 2018-04-09 | 2018-08-10 | 河北珠峰仪器仪表设备有限公司 | A kind of active initiative lightning protection system and method |
-
2014
- 2014-04-28 CN CN201420213620.9U patent/CN203800460U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108388157A (en) * | 2018-04-09 | 2018-08-10 | 河北珠峰仪器仪表设备有限公司 | A kind of active initiative lightning protection system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 |