CN213023304U - Transformer winding temperature detection structure capable of improving safety coefficient - Google Patents
Transformer winding temperature detection structure capable of improving safety coefficient Download PDFInfo
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- CN213023304U CN213023304U CN202021067094.1U CN202021067094U CN213023304U CN 213023304 U CN213023304 U CN 213023304U CN 202021067094 U CN202021067094 U CN 202021067094U CN 213023304 U CN213023304 U CN 213023304U
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Abstract
The utility model discloses a transformer winding temperature detection structure for improving safety factor, relating to the technical field of transformer detection and aiming at solving the problem that a thermometer needs to collect current in a transformer loop through a current transformer; in the long-time use process, the damage of the winding thermometer can cause the open circuit of the secondary side of the current transformer; the technical scheme is characterized by comprising a thermometer body, wherein the thermometer body is electrically connected with a wiring terminal row, and the wiring terminal row is provided with wiring holes; short sealing lines are inserted into wiring holes of the wiring terminal row, which are positioned on the secondary side of the current transformer, connecting plugs are arranged at two ends of the short sealing lines, and electric conductors electrically connected with the short sealing lines are arranged at the end parts of the connecting plugs. The effect of reducing the probability of generating high voltage due to the fact that the current transformer generates a secondary side open circuit and improving the safety coefficient of the circuit is achieved.
Description
Technical Field
The utility model belongs to the technical field of the technique that the transformer detected and specifically relates to an improve factor of safety's transformer winding temperature detection structure is related to.
Background
The temperature of the internal windings of the transformer needs to be monitored in order to start the cooling system when the temperature of the transformer reaches a set value, and a transformer winding thermometer is currently used for monitoring the temperature of the transformer windings. The temperature detected by the transformer winding thermometer consists of two parts, wherein one part is the oil temperature of the top layer in the transformer measured by the measuring thermometer bulb, and the other part is the current in the transformer measured by the current transformer and obtained by current transformation.
The prior chinese patent with publication number CN2473655Y discloses a transformer winding thermometer, which comprises a casing, a temperature control instrument, a wiring terminal and a fan control device, wherein the temperature control instrument, the wiring terminal and the fan control device are arranged in the casing, the temperature control instrument is connected with a sensor, and a current transformation circuit is arranged in the casing. The special design greatly reduces the volume of the converter, the voltage-stabilized power supply and the temperature transmitter, can be arranged in a standard temperature measuring instrument shell, has simple structure and very convenient field installation, has complete functions, can directly input signals to a computer, has visual and accurate display, and meets the requirement of transformer operation monitoring.
The above prior art solutions have the following drawbacks: the thermometer is used for collecting current in a transformer loop through a current transformer; in the long-time use process, the winding thermometer is damaged to cause the secondary side of the current transformer to be open-circuited; the open circuit of the secondary side of the current transformer can generate larger induced electromotive force in the winding, thereby generating high voltage which harms operators and equipment, and the improvement is needed.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide an improve factor of safety's transformer winding temperature detection structure, it has the probability that reduces current transformer and produces the secondary side open circuit and produce the high voltage, improves circuit factor of safety's advantage.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a transformer winding temperature detection structure capable of improving safety coefficient comprises a thermometer body, wherein the thermometer body is electrically connected with a wiring terminal block, and the wiring terminal block is provided with wiring holes; short seal lines are inserted into wiring holes of the wiring terminal row, located on the secondary side of the current transformer, connecting plugs are arranged at two ends of the short seal lines, and electric conductors electrically connected with the short seal lines are arranged at the ends of the connecting plugs.
Through adopting above-mentioned technical scheme, carry out the short circuit through the electric conductor with the both ends of short seal line with the current transformer secondary side to just by the short circuit with the current transformer of thermometer in binding post row department, make the electric current can not follow binding post row and flow into the thermometer, thereby reduced effectively and open a way because of the current transformer secondary side that the thermometer damaged leads to, thereby reduced and produced the danger that great induced electromotive force brought, improved the factor of safety of transformer.
The utility model discloses further set up to: and one side of the electric conductor is provided with a butt reed which is a conducting strip.
Through adopting above-mentioned technical scheme, the setting of butt reed be convenient for the electric conductor when inserting in the wiring hole with wiring hole inside wall counterbalance to conduct the electric current to electric conductor department, thereby make connecting plug can adapt to the wiring hole of not equidimension within range, be more convenient for fix connecting plug in the wiring hole.
The utility model discloses further set up to: the abutting reed is in a diamond shape, and one side of the abutting reed is embedded in the electric conductor.
Through adopting above-mentioned technical scheme, the setting of rhombus makes the butt reed change and takes place deformation to the inside wall in butt wiring hole when being inserted in the wiring hole of being more convenient for the butt reed.
The utility model discloses further set up to: and a magnetic part is arranged on one side of the electric conductor, which is far away from the abutting reed.
By adopting the technical scheme, steel is often required to be added to improve the strength of the conductive tube in which the wiring hole is positioned in the manufacturing process, and the surface of the steel is often required to be plated with a layer of nickel for corrosion prevention; the setting of magnetic part can adsorb the electric conductor in the wiring hole to be more convenient for fix the electric conductor in the wiring hole.
The utility model discloses further set up to: the one end that connecting plug kept away from the electric conductor is provided with the insulating piece that grips, the insulating lateral wall that grips the piece is provided with anti-skidding burr.
Through adopting above-mentioned technical scheme, the setting of insulating piece and the anti-skidding burr of gripping is convenient for improve the coefficient of friction of connecting plug lateral wall, and the operating personnel of being more convenient for grips, reduces the probability of slippage.
The utility model discloses further set up to: and one end of the insulating holding block, which is far away from the conductor, is provided with a connecting hole for inserting another conductor, and the bottom wall of the connecting hole is electrically connected with the conductor.
Through adopting above-mentioned technical scheme, the setting of connecting hole is convenient for carry out the wiring again on connecting plug to make the wiring hole still be convenient for carry out the wiring after being connected with connecting plug.
The utility model discloses further set up to: the outer side wall of the insulating holding block is provided with an elastic plate extending towards the electric conductor, and the surface of one side of the elastic plate, facing the electric conductor, is provided with a clamping block.
Through adopting above-mentioned technical scheme, the tight piece of clamp on elastic plate and the elastic plate is convenient for carry out the centre gripping to the contact tube at wiring hole place to cooperate with the butt reed, further fix connecting plug in the wiring hole.
The utility model discloses further set up to: the clamping block is a rubber block, and the outer side wall of the clamping block is provided with a abdicating surface.
By adopting the technical scheme, the rubber block has higher friction coefficient, so that the probability of slipping of the clamping block when the clamping block abuts against the outer side wall of the conductive tube where the wiring hole is located can be reduced; and the conductive tube at the wiring hole is conveniently inserted between the elastic plate and the connecting plug due to the arrangement of the abdicating surface.
The utility model discloses further set up to: and an indicator lamp for indicating the conductive state of the short seal line is connected in series between the short seal lines.
Through adopting above-mentioned technical scheme, the pilot lamp in the short seal line can be to whether there is the electric current to instruct in the short seal line to be convenient for operating personnel clearly master the electric current condition of short seal line.
To sum up, the beneficial effects of the utility model are that:
1. the technology of short sealing the secondary side of the current transformer by using a short sealing line is adopted, so that the effect of preventing the induced electromotive force from being too large due to the open circuit of the secondary side of the current transformer is generated, and the safety coefficient of the transformer is improved;
2. the technology that the rhombic abutting reed, the magnetic part, the elastic plate, the clamping block and the abdicating surface are matched is adopted, so that the effect of conveniently fixing the connecting plug in the wiring hole is achieved;
3. the technology that the indicating lamp is connected in series in the short seal line is adopted, so that the effect that whether current exists in the short seal line or not can be conveniently and visually seen by an operator is achieved.
Drawings
FIG. 1 is a schematic diagram of an overall structure of a transformer winding temperature detection structure for improving a safety factor in an embodiment;
FIG. 2 is a schematic diagram showing a structure at a wire hole in the embodiment;
fig. 3 is an enlarged schematic view of the structure at a in fig. 2.
In the figure: 1. a thermometer body; 11. a terminal block; 111. a wiring hole; 112. a conductive tube; 2. short sealing lines; 20. an indicator light; 21. a connecting plug; 211. an insulating holding block; 2111. anti-skid wales; 2112. connecting holes; 2113. an elastic plate; 2114. a clamping block; 2115. a abdication surface; 22. an electrical conductor; 221. abutting against the reed; 2210. an embedding groove; 222. a magnetic member.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
the utility model provides an improve factor of safety's transformer winding temperature detection structure, refers to figure 1, and it includes thermometer body 1, and thermometer body 1 electricity is connected with binding post row 11, and binding post row 11 is used for being connected current in order to detect the transformer through voltage transformer with the thermometer.
Referring to fig. 2, the terminal block 11 is integrally formed with a terminal hole 111, the terminal hole 111 is formed by forming a blind hole in a conductive tube 112, and the conductive tube 112 is made of a conductive material. The wiring hole 111 of the wiring terminal block 11 located on the secondary side of the current transformer is inserted with a short sealing wire 2, and the short sealing wire 2 is a copper core wire. An indicator light 20 used for indicating the conducting state of the short seal line 2 is connected in series in the middle of the short seal line 2, and the indicator light 20 is a small bulb connected with a 1M omega resistor in series and used for indicating whether current flows through the short seal line 2.
Referring to fig. 2, connection plugs 21 are integrally formed at both ends of the stub 2, a conductor 22 electrically connected to the stub 2 is provided at an end of the connection plug 21, and the conductor 22 is made of a conductive material such as copper or iron.
Referring to fig. 3, the contact spring 221 is fixed to one side of the conductor 22, the contact spring 221 is formed in a diamond shape, a fitting groove 2210 is formed in the conductor 22 at the contact spring 221, and the contact spring 221 is welded and fixed to the fitting groove 2210. The contact spring piece 221 is a conductive piece, the contact spring piece 221 is made of the same material as the conductor 22, and the contact spring piece 221 contacts the inner wall of the wire connecting hole 111 when the conductor 22 is inserted into the wire connecting hole 111, so that the conductor 22 contacts the inner wall of the wire connecting hole 111 while conducting electricity.
Referring to fig. 3, a magnetic member 222 is embedded and adhered to one side of the conductor 22 away from the contact spring 221, the magnetic member 222 is preferably an ndfeb magnet, steel is added in the process of manufacturing the conductor tube 112 in which the wire connection hole 111 is located to improve the strength of the conductor tube 112, and a layer of nickel is required to be plated on the surface of the conductor tube 112 for rust prevention, and the magnetic member 222 is used for being adsorbed to the inner side wall of the wire connection hole 111 to fix the conductor 22 in the wire connection hole 111.
Referring to fig. 3, an end of the connection plug 21 away from the conductor 22 is wrapped with an insulating holding block 211, and the insulating holding block 211 is formed by integrally molding PVC material on an end of the conductor 22. The outer side wall of the insulating holding block 211 is integrally formed with anti-slip ribs 2111, and the anti-slip ribs 2111 are arranged along the length direction of the conductor 22 and surround the insulating holding block 211 for a circle, so that the friction coefficient of the outer side wall of the connecting plug 21 is increased.
Referring to fig. 3, one end of the insulating holding block 211, which is away from the conductor 22, is provided with a connection hole 2112 through which another conductor 22 can be inserted, the connection hole 2112 is a round blind hole, and the bottom wall of the connection hole 2112 is electrically connected to the conductor 22 to connect two adjacent short seal wires 2.
Referring to fig. 3, an elastic plate 2113 extending toward the conductor 22 is integrally formed on the outer side wall of the insulated holding block 211, and the elastic plate 2113 is an elastic thin plate. A clamp block 2114 is bonded to a surface of the elastic plate 2113 on a side facing the conductor 22, and the clamp block 2114 abuts against the conductive tube 112 on an outer side wall of the wire connection hole 111, thereby fixing the conductor 22 in the connection hole 2112 or the wire connection hole 111.
Referring to fig. 3, the clamping block 2114 is a rubber block, the outer side wall of the clamping block 2114 is provided with an abdicating surface 2115, and the abdicating surface 2115 is arc-shaped, so as to clamp the clamping block 2114 on the outer side wall of the conductive tube 112.
The working principle is as follows:
before the transformer works, the wiring hole 111 on the secondary side of the current transformer is short-sealed, specifically, the connecting plug 21 of the short-sealed wire 2 is inserted into the wiring hole 111 of the wiring terminal block 11. At this time, the contact spring piece 221 contacts the inner wall of the wire connection hole 111, and the magnetic piece 222 is attracted to the inner wall of the wire connection hole 111; in addition, the elastic plate 2113 is slightly deformed so that the clamp block 2114 abuts against the conductive tube 112 on the outer side wall of the wire hole 111, thereby fixing the connection plug 21. Because the secondary side of the current transformer of the thermometer is short-sealed, the induced electromotive force cannot be generated, and the induced electromotive force cannot be overlarge due to the fact that the secondary side is open. Due to the fact that other current transformers exist in the transformer, the current value in the transformer can be detected through the other current transformers, and therefore the safety factor of the transformer is improved.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (9)
1. A transformer winding temperature detection structure capable of improving safety coefficient comprises a thermometer body (1), wherein the thermometer body (1) is electrically connected with a wiring terminal block (11), and the wiring terminal block (11) is provided with a wiring hole (111); the method is characterized in that: the wiring terminal strip (11) is inserted into a wiring hole (111) on the secondary side of the current transformer and is provided with a short seal line (2), two ends of the short seal line (2) are provided with connecting plugs (21), and the end parts of the connecting plugs (21) are provided with electric conductors (22) electrically connected with the short seal line (2).
2. The transformer winding temperature detection structure capable of improving the safety factor according to claim 1, characterized in that: and one side of the conductor (22) is provided with an abutting reed (221), and the abutting reed (221) is a conducting strip.
3. The transformer winding temperature detection structure capable of improving the safety factor according to claim 2, characterized in that: the abutting reed (221) is rhombic, and one side of the abutting reed (221) is embedded in the conductor (22).
4. The transformer winding temperature detection structure capable of improving the safety factor according to claim 2, characterized in that: a magnetic member (222) is provided on the side of the conductor (22) away from the contact spring (221).
5. The transformer winding temperature detection structure capable of improving the safety factor according to claim 1, characterized in that: one end, far away from the electric conductor (22), of the connecting plug (21) is provided with an insulating holding block (211), and the outer side wall of the insulating holding block (211) is provided with an anti-skid convex line (2111).
6. The transformer winding temperature detection structure capable of improving the safety factor according to claim 5, characterized in that: one end of the insulating holding block (211), which is far away from the conductor (22), is provided with a connecting hole (2112) through which another conductor (22) can be inserted, and the bottom wall of the connecting hole (2112) is electrically connected with the conductor (22).
7. The transformer winding temperature detection structure capable of improving the safety factor according to claim 5, characterized in that: an elastic plate (2113) extending towards the conductor (22) is arranged on the outer side wall of the insulating holding block (211), and a clamping block (2114) is arranged on the surface of one side, facing the conductor (22), of the elastic plate (2113).
8. The transformer winding temperature detection structure capable of improving the safety factor according to claim 7, characterized in that: the clamping block (2114) is a rubber block, and the outer side wall of the clamping block (2114) is provided with an abdicating surface (2115).
9. The transformer winding temperature detection structure capable of improving the safety factor according to claim 1, characterized in that: and an indicator light (20) for indicating the conducting state of the short seal line (2) is connected in series in the middle of the short seal line (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021067094.1U CN213023304U (en) | 2020-06-11 | 2020-06-11 | Transformer winding temperature detection structure capable of improving safety coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021067094.1U CN213023304U (en) | 2020-06-11 | 2020-06-11 | Transformer winding temperature detection structure capable of improving safety coefficient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213023304U true CN213023304U (en) | 2021-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021067094.1U Active CN213023304U (en) | 2020-06-11 | 2020-06-11 | Transformer winding temperature detection structure capable of improving safety coefficient |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213023304U (en) |
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- 2020-06-11 CN CN202021067094.1U patent/CN213023304U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 300000 No. 398, west side of Tanghan Road, Beitang street, Binhai New Area, Tianjin Patentee after: Tianjin Guoneng Binhai Thermal Power Co.,Ltd. Address before: No.1-18, Taishan Road, Xinyu home community, Beitang, Tanggu, Binhai New Area, Tianjin, 300450 Patentee before: Tianjin Guodian Tianjin Binhai Thermal Power Co.,Ltd. |
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| CP03 | Change of name, title or address |