CN209765364U - Overload protection transformer - Google Patents
Overload protection transformer Download PDFInfo
- Publication number
- CN209765364U CN209765364U CN201822132115.2U CN201822132115U CN209765364U CN 209765364 U CN209765364 U CN 209765364U CN 201822132115 U CN201822132115 U CN 201822132115U CN 209765364 U CN209765364 U CN 209765364U
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- CN
- China
- Prior art keywords
- secondary coil
- overload protection
- alarm
- sleeve
- rheostat
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- Expired - Fee Related
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Abstract
The utility model discloses an overload protection transformer, which comprises a rheostat and a primary coil which are connected with a transmission power supply in series; the two ends of the primary coil are electrically connected with an N1 secondary coil, the N1 secondary coil corresponds to an N2 secondary coil of the inductance transformation, and the N2 secondary coil is electrically connected with the user power supply equipment; the overload protection transformer is simple in structure, a double-control electromagnetic relay is added, the transformed relay can feed back and adjust the voltage transmitted by the transformer when the current is suddenly too large, and the rheostat can automatically adjust the electric energy transmitted by the main line.
Description
Technical Field
The utility model relates to a transformer technical field specifically is an overload protection transformer.
Background
The amount of current in the voltage transmission line that is allowed to pass continuously without overheating the wire is called safe ampacity or safe current. When the load is too large, the current flowing through the wire exceeds the safe current-carrying capacity, and the wire is overloaded. Overloading the wire can cause the wire to increase in temperature. When the wire is overloaded, the temperature of the wire exceeds the maximum allowable working temperature, the insulation layer of the wire can be rapidly aged, and even the wire burns to cause a big fire. Therefore, in an actual power supply line, an overload protection device function is usually provided to prevent the overload of the load from causing potential safety hazards. Application No.: although CN 201020582590.0 discloses a detection device for a current overload protector, the design only has a monitoring function, but does not have a mechanism of feedback regulation, and it is necessary to design a device that can both monitor and regulate its transmission voltage, so as to protect the whole transformer, and it is more worth developing and manufacturing.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an overload protection transformer to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
An overload protection transformer comprises a rheostat connected with a transmission power supply in series, a primary coil; the two ends of the primary coil are electrically connected with an N1 secondary coil, the N1 secondary coil corresponds to an N2 secondary coil of the inductance transformation, and the N2 secondary coil is electrically connected with the user power supply equipment; and a circuit between the secondary coil of the N2 and the user power supply equipment is sleeved with a current meter with a mutual inductor, and the current meter with the mutual inductor performs feedback control on the adjustment of a rheostat of the current meter through a double-control electromagnetic relay connected in series so as to realize overload protection.
Preferably, the double-control electromagnetic relay comprises a supporting rod fixedly connected to a base provided with an electromagnet, a sleeve is sleeved on the supporting rod in a sliding mode, the lower end of the sleeve is fixed to the base through a spring, a metal conductive contact piece capable of shifting feedback adjustment transmission voltage along with the movement of the sleeve is connected to one side wall of the sleeve through a rubber insulator, and the metal conductive contact piece is connected to the rheostat in a sliding mode.
Preferably, the double-control electromagnetic relay further comprises a conducting strip fixed on the other side wall of the sleeve, an alarm is connected in series below the positive pole and the negative pole of the conducting strip, and the alarm comprises an alarm contact and an alarm bell to control the alarm in an overload mode.
Preferably, a voltmeter capable of detecting voltage is electrically connected to two ends of the primary coil.
Compared with the prior art, the beneficial effects of the utility model are that: this overload protection transformer simple structure through adding two accuse electromagnetic relay, and the relay after reforming transform can feed back when the electric current appears suddenly too big danger and adjust its transmission voltage size of coming, adjusts the electric energy that the total line transmission of varistor automatically regulated came, and when the load is too big to certain extent, will trigger the siren sound production, reminds electrician to go in time maintenance once more, and its overload danger of taking place of dual guarantee has universal practical value.
Drawings
Fig. 1 is the schematic diagram of the overload protection transformer provided by the utility model.
In the figure: the device comprises a transmission power supply 1, a rheostat 2, a voltmeter 3, a primary coil 4, a current meter 6 with a mutual inductor, a double-control electromagnetic relay 7, a metal conductive contact 71, a rubber insulator 72, a support rod 73, a sleeve 74, an alarm 8, an alarm contact 801, an alarm bell 802, an N1 secondary coil 9 and an N2 secondary coil 10.
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, the present invention provides a technical solution:
an overload protection transformer comprises a rheostat 2 connected with a transmission power supply 1 in series, a primary coil 4; the two ends of the primary coil 4 are electrically connected with the N1 secondary coil 9, the two ends of the primary coil 4 are electrically connected with the voltmeter 3 capable of detecting voltage, the voltage of the circuit can be monitored in real time, the N1 secondary coil 9 corresponds to the N2 secondary coil with variable inductance, and the N2 secondary coil 10 is electrically connected with the user power supply equipment; the circuit between the secondary coil 10 of the N2 and the user power supply equipment is sleeved with a current meter 6 with a mutual inductor, the current meter 6 with the mutual inductor controls the adjustment of the rheostat 2 through the double-control electromagnetic relay 7 connected in series so as to realize overload protection, and the relay after modification can adjust the voltage transmitted by the transformer 2 in a feedback manner when the current is suddenly too large.
The double-control electromagnetic relay 7 comprises a supporting rod 73 fixedly connected to a base provided with an electromagnet, a sleeve 74 is sleeved on the supporting rod 73 in a sliding mode, the lower end of the sleeve 74 is fixed to the base through a spring, one side wall of the sleeve 74 is connected with a metal conductive contact piece 71 capable of shifting feedback adjustment transmission voltage along with the movement of the sleeve through a rubber insulator 72, the metal conductive contact piece 71 is connected to the rheostat 2 in a sliding mode, when overload occurs, the magnetism inside the double-control electromagnetic relay 7 is correspondingly increased, the metal conductive contact piece 71 is driven to move downwards, the current at the front end of the circuit is subjected to feedback adjustment, and the safety of the circuit is protected.
The double-control electromagnetic relay 7 further comprises a conducting strip fixed on the other side wall of the sleeve 74, an alarm 8 is connected in series below the positive pole and the negative pole of the conducting strip, the alarm 8 comprises an alarm contact plate 801 and an alarm bell 802 to control the alarm in an overload mode, when the load is too large to a certain degree, the descending amplitude of the sleeve 74 on the double-control electromagnetic relay 7 is increased, the conducting strip is driven to trigger the alarm contact plate 801 on the alarm 8 to trigger the alarm bell 802 to sound, and therefore the overload protection effect is achieved again.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. An overload protection transformer comprises a rheostat (2) connected with a transmission power supply (1) in series, and a primary coil (4); the two ends of the primary coil (4) are electrically connected with an N1 secondary coil (9), the N1 secondary coil (9) corresponds to an N2 secondary coil of the inductance transformation, and the N2 secondary coil (10) is electrically connected with the user power supply equipment;
The method is characterized in that: the line between the N2 secondary coil (10) and the user power supply equipment is sleeved with a current meter (6) with a mutual inductor, and the current meter (6) with the mutual inductor controls the adjustment of the rheostat (2) through a double-control electromagnetic relay (7) connected in series in a feedback mode so as to realize overload protection.
2. An overload protection transformer according to claim 1, characterised in that: the double-control electromagnetic relay (7) comprises a supporting rod (73) fixedly connected to a base provided with an electromagnet, a sleeve (74) is sleeved on the supporting rod (73) in a sliding mode, the lower end of the sleeve (74) is fixed to the base through a spring, a metal conductive contact piece (71) capable of shifting feedback adjustment transmission voltage along with the movement of the sleeve is connected to one side wall of the sleeve (74) through a rubber insulator (72), and the metal conductive contact piece (71) is connected to the rheostat (2) in a sliding mode.
3. An overload protection transformer according to claim 1, characterised in that: the double-control electromagnetic relay (7) also comprises a conducting strip fixed on the other side wall of the sleeve (74), an alarm (8) is connected in series below the positive pole and the negative pole of the conducting strip, and the alarm (8) comprises an alarm contact piece (801) and an alarm bell (802) to control the alarm in an overload mode.
4. An overload protection transformer according to claim 1, characterised in that: and two ends of the primary coil (4) are electrically connected with a voltmeter (3) capable of detecting voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822132115.2U CN209765364U (en) | 2018-12-18 | 2018-12-18 | Overload protection transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822132115.2U CN209765364U (en) | 2018-12-18 | 2018-12-18 | Overload protection transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209765364U true CN209765364U (en) | 2019-12-10 |
Family
ID=68746818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822132115.2U Expired - Fee Related CN209765364U (en) | 2018-12-18 | 2018-12-18 | Overload protection transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209765364U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114975010A (en) * | 2022-05-19 | 2022-08-30 | 扬州润沃科技有限公司 | Multi-path relay for high-power overcurrent protection |
-
2018
- 2018-12-18 CN CN201822132115.2U patent/CN209765364U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114975010A (en) * | 2022-05-19 | 2022-08-30 | 扬州润沃科技有限公司 | Multi-path relay for high-power overcurrent protection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20191210 Termination date: 20201218 |