Automatic detection device for secondary protection of power transmission and transformation facilities

Abstract

The utility model discloses an automatic detection device for secondary protection of a power transmission and transformation facility, which is applied to the technical field of power transmission and transformation facility detection, and is characterized in that the automatic detection device comprises a detection shell fixedly connected with the inner wall of a facility cabinet body, and the inner wall of the front surface of the detection shell is provided with a convex groove; the secondary protection device has the technical effects that when the secondary protection device breaks down, the detection value of the current detector of the induction coil is zero, at the moment, potential energy accumulated by the spring pushes the strip-shaped magnet leftwards, the strip-shaped magnet is driven to rotate, and the secondary protection device is driven to rotate. When the current detector detects faults, the conduction piece is staggered with the first circular conductor and the second circular conductor, the detection value of the current detector is zero, the monitoring center displays that power transmission and transformation facilities and secondary protection equipment related to the current detector break down, and therefore workers are arranged to go to corresponding positions for maintenance conveniently and quickly.

Description

Technical Field

[0001] The utility model relates to the technical field of power transmission and transformation equipment detection, in particular to an automatic detection device for secondary protection of power transmission and transformation facilities. Background Art

[0002] Transmission and transformation is the process of transmitting electricity from power plants to the power grid. This involves stepping up low voltage (e.g., 500,000 volts) and transmitting it over long distances. For the same power, higher voltages result in lower currents, which in turn reduces losses along the lines. Transmission often results in losses due to heat generation in the lines, so during transmission, the voltage is increased through transformers, reducing the current and minimizing heat losses. High voltage is highly dangerous, and the target electrical equipment does not require such high voltages, so transformers are used to reduce the voltage. Because current transmission requires multiple transformations, the process of transmitting current is called transmission and transformation. Transmission and transformation is like a vast network spanning the entire country. Substations are nodes in this network, and the transmission lines connecting these nodes are called transmission lines. These lines can be formed using steel towers, steel pipe poles, concrete poles, and power cables. Steel towers are common and can be seen along highways. With the advancement of technology and the growth of the nation, expensive power cables are gradually being used. This shift from overhead to underground power lines reflects social progress and civilization.

[0003] During the detection process of most automatic detection devices currently available on the market, on the one hand, due to the relatively simple internal structure of the automatic detection devices of the existing technology, it is impossible to realize automatic detection of the secondary protection of the power transmission and transformation facilities, and manual auxiliary detection is required, which is relatively troublesome. On the other hand, the automatic detection devices of the existing technology are not equipped with corresponding remote alarm mechanisms, so the facility monitoring center cannot obtain the detection information in the first time, and needs to cooperate with the staff to conduct regular inspections of the detection results, which is relatively troublesome and affects the timeliness of the detection results of the automatic detection device. Utility Model Content

[0004] The purpose of the present invention is to provide an automatic detection device for secondary protection of power transmission and transformation facilities, so as to solve the problem raised in the above background technology that the facility monitoring center cannot obtain detection information in the first time and needs to cooperate with staff to conduct regular inspections of the detection results.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an automatic detection device for secondary protection of power transmission and transformation facilities, comprising a facility cabinet, to the inner wall of which power transmission and transformation facilities and secondary protection equipment are fixedly connected, an automatic detection mechanism is provided inside the facility cabinet, and an information transmission terminal is fixedly provided on the right side of the facility cabinet;

[0006] The automatic detection mechanism includes a detection shell fixedly connected to the inner wall of the facility cabinet, a convex groove is provided on the front inner wall of the detection shell, and a support block, a support plate, a support member, a power supply group, and a current detector are fixedly connected to the front inner wall of the detection shell, a circular shaft is fixedly connected between the two support blocks, an induction coil is wound around the outer wall of the circular shaft, an input connector and an output connector are fixedly connected to the top of the support block, one end of the induction coil is connected to the input connector, and the other end of the induction coil is connected to the output connector.

[0007] The utility model is further configured as follows: the automatic detection mechanism also includes a convex block, the convex block is slidably connected to the detection shell through a convex groove, a bar magnet is fixedly connected to the front, the right end of the bar magnet is fixedly connected to a spring, the other end of the spring is fixedly connected to the right inner wall of the detection shell, the bottom of the convex block is fixedly connected to a conductive part, the top of the support part is respectively fixedly connected to a circular conductor 1 and a circular conductor 2, and the tops of the circular conductor 1 and the circular conductor 2 are in contact with the bottom of the conductive part.

[0008] With the above technical solution, the convex groove mainly serves to limit the convex block, thereby preventing the bar magnet from swinging due to the polarization of the spring.

[0009] The utility model is further configured as follows: the power transmission and transformation facilities are connected to the secondary protection equipment through lines, and the secondary protection equipment is connected to the input connector and the output connector respectively through lines.

[0010] By adopting the above technical solution, when the secondary protection device is working normally, the secondary protection device, the input connector, the induction coil, and the output connector form a closed circuit, so that the induction coil is energized, thereby generating a magnetic field, which repels the bar magnet on the right side of the induction coil, so that the circular conductor 1, the power supply group, the current detector, and the circular conductor 2, with the cooperation of the conductive part, form a complete closed-loop circuit, so that the value detected by the current detector is normal. When the secondary protection device fails, the detection value of the induction coil current detector is zero. At this time, the potential energy accumulated by the spring will push the bar magnet to the left, and the conductive part and the circular conductor 1 and the circular conductor 2 will be misaligned, so that the detection value of the current detector is zero.

[0011] The utility model is further configured as follows: the circular conductor 1, the power supply group, the current detector, and the circular conductor 2 are connected in sequence through a line.

[0012] By adopting the above technical solution, a complete closed-loop circuit is formed with the cooperation of the conductive parts, so that the value detected by the current detector is normal. The result is transmitted. If the value detected by the current detector is zero, the monitoring center will display that the power transmission and transformation facilities and secondary protection equipment associated with the current detector have failed, and workers will be arranged to go to the corresponding location for maintenance.

[0013] The present invention is further configured such that: the output end of the current detector is connected to the input end of the information transmission end via a line.

[0014] The above technical solution facilitates the transmission of the detection result of the current detector to the information transmission end.

[0015] The present invention is further configured as follows: the output end of the information transmitting end is connected to the input end of the information receiving end via a signal, and the output end of the information receiving end is connected to the input end of the monitoring center via a line.

[0016] The above technical solution allows the monitoring center to quickly receive information on the operating conditions of various power transmission and transformation facilities and secondary protection equipment.

[0017] The present invention is further configured as follows: the detection housing is rotatably connected to a housing door via a hinge.

[0018] The above technical solution can prevent external dust from entering the interior of the detection housing when workers are inspecting or repairing power transmission and transformation facilities.

[0019] The utility model is further configured as follows: the facility cabinet body is rotatably connected to a cabinet door via a second hinge, and a handle is installed on the cabinet door.

[0020] The above technical solution can prevent external factors from affecting the normal operation of the equipment inside the facility cabinet, and the handle can facilitate opening or closing the cabinet door.

[0021] The utility model provides an automatic detection device for secondary protection of power transmission and transformation facilities.

[0022] Beneficial effects:

[0023] (1) When the secondary protection device of the present invention is working normally, the secondary protection device, the input connector, the induction coil and the output connector form a closed circuit, so that the induction coil is energized, thereby generating a magnetic field, which repels the bar magnet on the right side of the induction coil, so that the circular conductor 1, the power supply group, the current detector and the circular conductor 2 form a complete closed loop circuit with the cooperation of the conductive part, so that the value detected by the current detector is normal. When the secondary protection device fails, the detection value of the induction coil current detector is zero. At this time, the potential energy accumulated by the spring will push the bar magnet to the left, and the conductive part and the circular conductor 1 and the circular conductor 2 will be misaligned, so that the detection value of the current detector is zero. The monitoring center will display that the power transmission and transformation facilities and the secondary protection device related to the current detector have failed, so that workers can be arranged to the corresponding location for maintenance, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of the utility model;

[0025] Figure 2 This is a front view of the utility model facility cabinet;

[0026] Figure 3 This is a three-dimensional diagram of the secondary protection device of the utility model;

[0027] Figure 4 This is a three-dimensional diagram of the automatic detection mechanism of the utility model;

[0028] Figure 5 This is a three-dimensional diagram of the detection housing of the utility model;

[0029] Figure 6 This is a three-dimensional diagram of the convex block of the utility model;

[0030] Figure 7 This is a framework diagram of the information transmission terminal system of the utility model.

[0031] In the figure: 1. Facility cabinet; 2. Power transmission and transformation facilities; 3. Secondary protection equipment; 4. Information transmission terminal; 5. Automatic detection mechanism; 51. Detection shell; 52. Shell door; 53. Support block; 54. Circular shaft; 55. Induction coil; 56. Input connector; 57. Output connector; 58. Support plate; 59. Convex groove; 510. Convex block; 511. Conductor; 512. Support member; 513. Circular conductor 1; 514. Circular conductor 2; 515. Power supply group; 516. Current detector; 517. Spring; 518. Bar magnet; 6. Information receiving terminal; 7. Monitoring center. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] like Figure 1-7 As shown, the utility model provides a technical solution: an automatic detection device for secondary protection of power transmission and transformation facilities, comprising a facility cabinet 1, on the inner wall of which are fixedly connected power transmission and transformation facilities 2 and secondary protection equipment 3, an automatic detection mechanism 5 is provided inside the facility cabinet 1, and an information transmission terminal 4 is fixedly provided on the right side of the facility cabinet 1, the facility cabinet 1 is rotatably connected to a cabinet door via hinge 2, and a handle is installed on the cabinet door to prevent external factors from affecting the normal operation of the equipment inside the facility cabinet 1, and the handle can facilitate opening or closing the cabinet door;

[0034] The automatic detection mechanism 5 includes a detection shell 51 fixedly connected to the inner wall of the facility cabinet 1. The detection shell 51 is connected to a shell door 52 by a hinge, which can prevent external dust from entering the detection shell 51 during the inspection or maintenance of the power transmission and transformation facilities 2 by workers. A convex groove 59 is opened on the front inner wall of the detection shell 51, and a support block 53, a support plate 58, a support member 512, a power supply group 515, and a current detector 516 are fixedly connected to the front inner wall of the detection shell 51 respectively. A circular shaft 54 is fixedly connected between the two support blocks 53, and an induction coil 55 is wound around the outer wall of the circular shaft 54. An input connector 56 and an output connector 57 are fixedly connected to the top of the support block 53 respectively. One end of the induction coil 55 is connected to the input connector 56, and the other end of the induction coil 55 is connected to the output connector 57;

[0035] The automatic detection mechanism 5 also includes a convex block 510, which is slidably connected to the detection shell 51 through a convex groove 59, and a bar magnet 518 is fixedly connected to the front side, and the right end of the bar magnet 518 is fixedly connected to a spring 517, and the other end of the spring 517 is fixedly connected to the right inner wall of the detection shell 51, and the convex groove 59 mainly limits the convex block 510 to prevent the bar magnet 518 from swinging due to the polarization of the spring 517. A conductive member 511 is fixedly connected to the bottom of the convex block 510, and a circular conductor 1 513 and a circular conductor 2 514 are fixedly connected to the top of the support member 512 respectively. The tops of the circular conductor 1 513 and the circular conductor 2 514 are in contact with the bottom of the conductive member 511. The power transmission and transformation facility 2 is connected to the secondary protection device 3 through a line, and the secondary protection device 3 is connected to the input connector 56 and the output connector 57 respectively through a line. The source group 515, the current detector 516, and the circular conductor 2 514 are connected in sequence through lines, so that with the cooperation of the conductive member 511, a complete closed-loop circuit is formed, so that the value detected by the current detector 516 is normal and the result is transmitted. When the value detected by the current detector 516 is zero, the monitoring center will display that the power transmission and transformation facilities 2 and the secondary protection equipment 3 associated with the current detector 516 have failed, so as to arrange workers to the corresponding location for maintenance. The output end of the current detector 516 is connected to the input end of the information transmission terminal 4 through a line, so that the detection result of the current detector 516 is conveniently transmitted to the information transmission terminal 4, the output end of the information transmission terminal 4 is connected to the input end of the information receiving terminal 6 through a signal, and the output end of the information receiving terminal 6 is connected to the input end of the monitoring center 7 through a line, so that the monitoring center 7 can quickly receive the operating conditions of each power transmission and transformation facility 2 and the secondary protection equipment 3.

[0036] Working principle: When the secondary protection device 3 is working normally, the secondary protection device 3, the input connector 56, the induction coil 55, and the output connector 57 form a closed circuit, so that the induction coil 55 is energized, thereby generating a magnetic field, which repels the bar magnet 518 on the right side of the induction coil 55, so that the circular conductor 1 513, the power supply group 515, the current detector 516, and the circular conductor 2 514, with the cooperation of the conductive part 511, form a complete closed-loop circuit, so that the value detected by the current detector 516 is normal. When the secondary protection device 3 fails, the current detector of the induction coil 55 detects a value of zero. At this time, the potential energy accumulated by the spring 517 will push the bar magnet 518 to the left, and the conductive part 511 and the circular conductor 1 513 and the circular conductor 2 514 will be misaligned, so that the current detector 516 detects a value of zero. The monitoring center will display that the power transmission and transformation facilities 2 and the secondary protection device 3 associated with the current detector 516 have failed, so that workers can be arranged to the corresponding location for maintenance, which is convenient and quick.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic detection device for secondary protection of power transmission and transformation facilities, comprising a facility cabinet (1), on the inner wall of which power transmission and transformation facilities (2) and secondary protection equipment (3) are fixedly connected, characterized in that: An automatic detection mechanism (5) is provided inside the facility cabinet (1), and an information transmission terminal (4) is fixedly provided on the right side of the facility cabinet (1); The automatic detection mechanism (5) comprises a detection shell (51) fixedly connected to the inner wall of the facility cabinet (1); a convex groove (59) is provided on the front inner wall of the detection shell (51); and a support block (53), a support plate (58), a support member (512), a power supply group (515), and a current detector (516) are fixedly connected to the front inner wall of the detection shell (51); a circular shaft (54) is fixedly connected between the two support blocks (53); an induction coil (55) is wound around the outer wall of the circular shaft (54); an input connector (56) and an output connector (57) are fixedly connected to the top of the support block (53); one end of the induction coil (55) is connected to the input connector (56), and the other end of the induction coil (55) is connected to the output connector (57).

2. The automatic detection device for secondary protection of power transmission and transformation facilities according to claim 1, characterized in that: The automatic detection mechanism (5) further comprises a convex block (510), wherein the convex block (510) is slidably connected to the detection housing (51) via a convex groove (59), a bar magnet (518) is fixedly connected to the front side, a spring (517) is fixedly connected to the right end of the bar magnet (518), and the other end of the spring (517) is fixedly connected to the right inner wall of the detection housing (51), a conductive member (511) is fixedly connected to the bottom of the convex block (510), and a circular conductor 1 (513) and a circular conductor 2 (514) are fixedly connected to the top of the support member (512), respectively, and the tops of the circular conductor 1 (513) and the circular conductor 2 (514) are in contact with the bottom of the conductive member (511).

3. The automatic detection device for secondary protection of power transmission and transformation facilities according to claim 1, characterized in that: The power transmission and transformation facility (2) is connected to the secondary protection device (3) via a line, and the secondary protection device (3) is connected to the input connector (56) and the output connector (57) via lines respectively.

4. The automatic detection device for secondary protection of power transmission and transformation facilities according to claim 2, characterized in that: The circular conductor 1 (513), the power supply group (515), the current detector (516), and the circular conductor 2 (514) are connected in sequence through lines.

5. The automatic detection device for secondary protection of power transmission and transformation facilities according to claim 1, characterized in that: The output end of the current detector (516) is connected to the input end of the information transmission end (4) via a line.

6. The automatic detection device for secondary protection of power transmission and transformation facilities according to claim 1, characterized in that: The output end of the information transmitting end (4) is connected to the input end of the information receiving end (6) via a signal, and the output end of the information receiving end (6) is connected to the input end of the monitoring center (7) via a line.

7. The automatic detection device for secondary protection of power transmission and transformation facilities according to claim 1, characterized in that: The detection housing (51) is rotatably connected to a housing door (52) via a hinge.

8. The automatic detection device for secondary protection of power transmission and transformation facilities according to claim 1, characterized in that: The facility cabinet body (1) is rotatably connected to a cabinet door via hinge 2, and a handle is installed on the cabinet door.

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