Television leakage detection type electrical control cabinet

Abstract

The invention relates to a missed television detection type electrical control cabinet applied to the field of electrical control cabinets, when surface charges of a control cabinet main body are static electricity generated by work, the electric quantity of the control cabinet main body is small, and after straight-rod-shaped conductive fibers and an insulating sheath conduct the charges, the prototype can be quickly recovered, and the electric quantity of the control cabinet main body is small. When surface charges of the control cabinet main body are charges generated by poor contact of electric appliances in the control cabinet main body, the charges can be continuously output into the control cabinet main body, the conductive fibers and the insulating sheath can be in a straight rod state for a long time, and maintenance personnel can judge the power distribution and leakage state accordingly. And meanwhile, fluorescent traces formed on the transparent protective cover by the fluorescent material overflowing from the bulb at one end, far away from the control cabinet main body, of the conductive fiber can also form a warning effect, and when a large number of traces appear on the transparent protective cover, the surface of the control cabinet main body is easy to accumulate charges at high frequency, and the control cabinet main body needs to be checked and maintained.

Description

Technical Field

[0001] The invention relates to the field of electric control cabinets, and more particularly to a leakage current detection type electric control cabinet. Background Art

[0002] A control cabinet is a device that assembles switchgear, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal cabinet or on a screen according to electrical wiring requirements. Its layout should meet the requirements for normal operation of the power system, be easy to maintain, and not endanger the safety of people and surrounding equipment. During normal operation, the circuit can be connected or disconnected with the help of manual or automatic switches. In the event of a fault or abnormal operation, the circuit can be cut off or an alarm can be issued with the help of protective electrical appliances.

[0003] In the actual use of the electrical control cabinet, if grounding is not carried out, the electrical wires are broken or the electrical appliances are in poor contact, and the exposed parts of the conductors in the circuit do not meet the creepage distance or the electrical clearance does not meet the safety requirements, local creepage or discharge phenomena may occur, which may easily lead to leakage of the electrical control cabinet, making the electrical control cabinet a charged body. The maintenance personnel of the electrical control cabinet may easily induce electric shock accidents during the maintenance of the electrical control cabinet.

[0004] In real life, for the sake of electrical safety, electrical control cabinets need to be equipped with a complete grounding system. However, during the use of the electrical control cabinet, the above-mentioned grounding system is prone to aging over time, and defects such as rust and poor contact will occur, which will affect the grounding effect of the electrical control cabinet and cause the electrical control cabinet body to be energized. On the one hand, it is easy to pose a potential threat to the electrical appliances in the electrical control cabinet, and on the other hand, it is easy to induce electric shock accidents when maintenance personnel are performing maintenance. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing grounding system of the electrical control cabinet is prone to aging, corrosion, poor contact and other defects, causing the electrical control cabinet body to be energized, affecting the safe operation of the electrical components inside the electrical control cabinet and easily inducing electric shock accidents for maintenance personnel.

[0006] To solve the above problems, the present application provides a leakage inspection type electrical control cabinet, including a control cabinet body, an insulating bracket is provided on the lower side of the control cabinet body, and the insulating bracket is fixedly connected to a grounding plate matching itself at one end close to the control cabinet body, a transparent protective cover is connected between the control cabinet body and the insulating bracket, and the transparent protective cover is respectively clamped with the control cabinet body and the insulating bracket, and a light-emitting panel is fixedly connected to the lower end of the control cabinet body, and a fiber cluster is fixedly connected to the lower end of the control cabinet body, the fiber cluster includes multiple conductive fibers, and the multiple conductive fibers are all in a three-dimensional spiral shape. Adjacent conductive fibers are intertwined to form multiple three-dimensional spatial structures, and the outer side of the conductive fibers is covered with an insulating sheath matching itself. The length of the conductive fibers and the insulating sheath after stretching is greater than the gap between the grounding plate, which can reduce the possibility of the electrical control cabinet being energized during use, and it is easy to provide warnings to maintenance personnel after the electrical control cabinet is energized, thereby reducing the possibility of electric shock accidents.

[0007] As a further improvement of the present application, a ball head is fixedly connected to one end of the conductive fiber away from the control cabinet body. The ball head is made of transparent insulating material and is filled with fluorescent material. When the conductive fiber and the ball head are in a three-dimensional spiral shape, the ball head is buried in the three-dimensional space structure formed by itself, and the light emitted by the fluorescent material cannot pass through the above three-dimensional space structure. When the conductive fiber and the ball head are in a straight rod shape, the ball head is in contact with the grounding plate. At this time, the ball head is exposed and emits fluorescence. Maintenance personnel can use the above fluorescence to determine whether the surface of the control cabinet body is charged.

[0008] As a further improvement of the present application, a plurality of prefabricated grooves are chiseled on the inner wall of the ball head. When the ball head returns to a three-dimensional spiral shape from a straight rod shape, the ball head close to the transparent protective cover is prone to collide with the transparent protective cover, making it easy for the ball head to be torn from the prefabricated groove. The fluorescent material overflows from the above-mentioned tearing opening and leaves marks on the transparent protective cover. The maintenance personnel can judge the static electricity accumulation during the operation of the control cabinet main body according to the above-mentioned marks. When a large number of marks appear on the transparent protective cover, it means that the surface of the control cabinet main body is prone to high-frequency accumulation of electric charges, and the grounding device of the control cabinet main body needs to be inspected and maintained.

[0009] As a further improvement of the present application, the ball head is filled with a filling sponge, which has a high affinity with the fluorescent material. The porous structure of the filling sponge provides sufficient storage space for the fluorescent material, so that the fluorescent material will be squeezed out of the ball head only after the ball head collides with the transparent protective cover and is deformed. It is not easy to cause excessive leakage of fluorescent material and affect the working environment of the fiber cluster.

[0010] As a further improvement of the present application, the insulating outer skin is made of a non-transparent material so that the insulating outer skin is not easy to conduct the light beam generated by the light-emitting board and is not easy to affect the light source recognition of the fluorescent material.

[0011] As a further improvement of the present application, there is an obvious gap between the insulating outer skin and the ball head, so that the conductive fiber can easily guide the charge on the control cabinet body into the grounding plate.

[0012] As a further improvement of the present application, the conductive fibers and the insulating sheath maintain a three-dimensional spiral shape in the absence of external force, and are not likely to cause the three-dimensional structure of the fiber cluster to collapse under the counterweight of the ball head and its internal structure, and are not likely to affect the normal operation of the leakage alarm.

[0013] As a further improvement of the present application, an invisible handle is cut on the side wall of the transparent protective cover to facilitate the installation and removal of the transparent protective cover.

[0014] As a further improvement of the present application, the transparent protective cover includes an acrylic plate, and a plurality of capillary cracks are bored on the inner wall of the acrylic plate to provide attachment positions for the fluorescent material. Maintenance personnel can judge the frequency of changes in the fiber cluster morphology by the number of fluorescent lines on the acrylic plate, and further judge the frequency of leakage of the control cabinet body.

[0015] As a further improvement of the present application, the surface of the acrylic plate nickel coin is a polished surface, and the cracks of the capillary cracks are frosted surfaces, so that the fluorescent material can easily flow into the capillary cracks to form fluorescent lines.

[0016] In summary, in this application, when the charge on the surface of the control cabinet body is static electricity generated by work, the control cabinet body has a small charge, and the conductive fibers and insulating sheath that have become straight rods will quickly return to their original form after conducting the charge. When the charge on the surface of the control cabinet body is the charge generated by poor contact of electrical appliances in the control cabinet body, the charge will continue to be output into the control cabinet body, and the conductive fibers and insulating sheath will remain in a straight rod state for a long time. The maintenance personnel can judge the leakage state of the control cabinet body according to the specific state of the fiber cluster. When the fiber cluster only remains in a straight rod shape for a short time, maintenance work can be carried out by wearing insulating gloves, and maintenance of the grounding device of the control cabinet body can be arranged at the same time. When the fiber cluster remains in a straight rod shape for a long time, the control cabinet body shows a large amount of accumulated charge, and the maintenance personnel need to take safety protection measures before continuing the maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an exploded view of the main structure of the electrical control cabinet with leakage warning function of the present invention; Figure 2 It is a structural schematic diagram of an electrical control cabinet with a leakage warning function of the present invention; Figure 3 It is a side sectional view of the electrical control cabinet with leakage warning function of the present invention; Figure 4 It is a schematic diagram of the working state change of the electrical control cabinet with leakage warning function of the present invention; Figure 5 It is a structural schematic diagram of the electrical control cabinet of the present invention when it is in a normal working state; Figure 6 It is a structural schematic diagram of the electrical control cabinet of the present invention when it is in a leakage working state; Figure 7 is a schematic structural diagram of the conductive fiber of the present invention; Figure 8 It is a schematic diagram of the partial cross-sectional structure of the conductive fiber ball head of the present invention; Fig. 9 for Figure 8 The structural diagram at A in the middle; Fig.10 It is a partial schematic diagram of the transparent protective cover of the present invention.

[0018] Description of the numbers in the figure: 1 control cabinet body, 2 insulation bracket, 3 grounding plate, 4 transparent protective cover, 401 acrylic plate, 402 capillary crack, 5 luminous plate, 6 fiber cluster, 601 conductive fiber, 602 insulation outer skin, 603 ball head, 604 filling sponge, 605 prefabricated groove. DETAILED DESCRIPTION

[0019] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0020] The first implementation method: See also Figure 1-3 A leakage detection type electrical control cabinet includes a control cabinet body 1, an insulating bracket 2 is provided on the lower side of the control cabinet body 1, and a grounding plate 3 matching the insulating bracket 2 is fixedly connected to one end of the insulating bracket 2 close to the control cabinet body 1, and a transparent protective cover 4 is connected between the control cabinet body 1 and the insulating bracket 2, and the transparent protective cover 4 is respectively clamped with the control cabinet body 1 and the insulating bracket 2.

[0021] Combination Figure 5 As shown, the lower end of the control cabinet body 1 is fixedly connected to a light-emitting panel 5, and the lower end of the control cabinet body 1 is fixedly connected to a fiber cluster 6, the fiber cluster 6 includes a plurality of conductive fibers 601, and the plurality of conductive fibers 601 are all in a three-dimensional spiral shape, and adjacent conductive fibers 601 are intertwined to form a plurality of three-dimensional spatial structures, and the outer side of the conductive fiber 601 is coated with an insulating sheath 602 that matches itself, and the length of the conductive fiber 601 and the insulating sheath 602 after stretching is greater than the gap between the grounding plate 3.

[0022] See also Figure 4-6It is worth noting that during the installation of the control cabinet body 1, the grounding device of the control cabinet body 1 needs to be pre-configured. When the control cabinet body 1 is working normally, the static electricity generated by its own work and the charge generated by leakage can be introduced into the earth through the above-mentioned grounding device to avoid the accumulation of static electricity. After the above-mentioned grounding device fails due to aging, the charge generated by the control cabinet body 1 will not be able to be introduced into the earth through the grounding device, and the charge accumulates on the control cabinet body 1. Since the charge has the appearance of tip aggregation, the charge accumulated on the surface of the control cabinet body 1 can easily migrate to the end of the fiber cluster 6 away from the control cabinet body 1. Due to the mutual repulsion between static electricity, the conductive fiber 601 and the insulating sheath 602, which were originally in the shape of a three-dimensional spiral, are changed into a straight rod shape, connecting the control cabinet body 1 and the grounding plate 3, so that the static electricity accumulated on the control cabinet body 1 can be introduced into the earth through the grounding plate 3 to realize the migration of charge, which can reduce the possibility of the electrical control cabinet being charged during use, and it is easy to provide warnings to maintenance personnel after the electrical control cabinet is charged, thereby reducing the possibility of electric shock accidents.

[0023] When the charge on the surface of the control cabinet body 1 is static electricity generated by work, the control cabinet body 1 has a small charge, and the conductive fibers 601 and the insulating outer skin 602 that have become straight rods will quickly return to their original shapes after conducting the charge. When the charge on the surface of the control cabinet body 1 is the charge generated by poor contact of electrical appliances in the control cabinet body 1, the charge will continue to be output to the control cabinet body 1, and the conductive fibers 601 and the insulating outer skin 602 will remain in a straight rod state for a long time. The maintenance personnel can judge the leakage state of the control cabinet body 1 according to the specific state of the fiber cluster 6. When the fiber cluster 6 only remains in a straight rod shape for a short time, maintenance work can be carried out by wearing insulating gloves, and maintenance of the grounding device of the control cabinet body 1 can be arranged at the same time. When the fiber cluster 6 remains in a straight rod shape for a long time, the control cabinet body 1 shows a large amount of accumulated charge, and the maintenance personnel need to take safety protection measures before continuing the maintenance work.

[0024] When the conductive fiber 601 and the insulating sheath 602 are in a three-dimensional spiral shape, the fiber cluster 6 completely covers the light-emitting board 5, so that the light beam emitted by the light-emitting board 5 cannot pass through the fiber cluster 6. In the space between the control cabinet body 1 and the grounding plate 3, the light beam of the light-emitting board 5 is small. As the number of the conductive fibers 601 and the insulating sheath 602 that become straight rods increases, the covering effect of the fiber cluster 6 on the light-emitting board 5 will become lower, and the light beam emitted by the light-emitting board 5 will gradually leak out. The maintenance personnel can systematically determine the surface charge of the control cabinet body 1 by observing the space between the control cabinet body 1 and the grounding plate 3, which is convenient for subsequent maintenance work.

[0025] Second implementation method: Based on Implementation Example 1, this implementation example adds the following content: a ball head 603 is fixedly connected to one end of the conductive fiber 601 away from the control cabinet body 1. The ball head 603 is made of a transparent insulating material and is filled with a fluorescent material. When the conductive fiber 601 and the ball head 603 are in a three-dimensional spiral shape, the ball head 603 is buried in the three-dimensional space structure formed by itself, and the light emitted by the fluorescent material cannot pass through the above three-dimensional space structure. When the conductive fiber 601 and the ball head 603 are in a straight rod shape, the ball head 603 contacts the grounding plate 3. At this time, the ball head 603 is exposed and emits fluorescence. Maintenance personnel can use the above fluorescence to determine whether the surface of the control cabinet body 1 is charged.

[0026] There are multiple prefabricated grooves 605 on the inner wall of the ball head 603. When the ball head 603 returns to the three-dimensional spiral shape from a straight rod shape, the ball head 603 close to the transparent protective cover 4 is easy to collide with the transparent protective cover 4, making the ball head 603 easy to tear from the prefabricated groove 605, and the fluorescent material overflows from the above-mentioned tearing mouth, and leaves marks on the transparent protective cover 4. The maintenance personnel can judge the static electricity accumulation during the operation of the control cabinet body 1 according to the above-mentioned marks. When a large number of marks appear on the transparent protective cover 4, it means that the surface of the control cabinet body 1 is prone to high-frequency accumulation of electric charges, and the grounding device of the control cabinet body 1 needs to be inspected and maintained.

[0027] The ball head 603 is filled with a filling sponge 604, which has a high affinity with the fluorescent material. The porous structure of the filling sponge 604 provides sufficient storage space for the fluorescent material, so that the fluorescent material will be squeezed out of the ball head 603 only after the ball head 603 collides with the transparent protective cover 4 and is deformed. It is not easy to cause excessive leakage of fluorescent material and affect the working environment of the fiber cluster 6. The insulating outer skin 602 is made of non-transparent material, which makes it difficult for the insulating outer skin 602 to conduct the light beam generated by the light-emitting panel 5 and is not easy to affect the light source recognition of the fluorescent material.

[0028] There is an obvious gap between the insulating outer skin 602 and the ball head 603, which makes it easy for the conductive fiber 601 to conduct the charge on the control cabinet body 1 into the grounding plate 3. The conductive fiber 601 and the insulating outer skin 602 maintain a three-dimensional spiral shape in the absence of external force. The three-dimensional structure of the fiber cluster 6 is not likely to collapse under the counterweight of the ball head 603 and its internal structure, and the normal operation of the leakage alarm is not likely to be affected.

[0029] See also Figure 2 and Fig.10, an invisible handle is cut on the side wall of the transparent protective cover 4 to facilitate the installation and removal of the transparent protective cover 4. It is worth noting that in this solution, the control cabinet body 1 and the insulating bracket 2 are fixedly connected with the transparent protective cover 4 by snaps. This is a well-known technology for those skilled in the art, so it is not disclosed in detail in this application. The transparent protective cover 4 includes an acrylic plate 401, and a plurality of capillary cracks 402 are cut on the inner wall of the acrylic plate 401 to provide an attachment position for the fluorescent material. The maintenance personnel can judge the frequency of the morphological changes of the fiber cluster 6 by the number of fluorescent lines on the acrylic plate 401, and then judge the frequency of leakage of the control cabinet body 1. The nickel coin surface of the acrylic plate 401 is a polished surface, and the cracks of the capillary cracks 402 are frosted surfaces, so that the fluorescent material can easily flow into the capillary cracks 402 to form fluorescent lines.

[0030] The fluorescent material in the ball head 603 at one end of the conductive fiber 601 away from the control cabinet body 1 can form a warning effect. When the conductive fiber 601 and the ball head 603 are in a straight rod shape, the ball head 603 contacts the grounding plate 3. At this time, the ball head 603 is exposed and emits fluorescence. The maintenance personnel can use the above fluorescence to determine whether the surface of the control cabinet body 1 is charged. When the ball head 603 returns to a three-dimensional spiral shape from a straight rod shape, the ball head 603 close to the transparent protective cover 4 is easy to collide with the transparent protective cover 4, making the ball head 603 easy to tear from the filling sponge 604, and the fluorescent material overflows from the above tearing, leaving traces. The maintenance personnel can judge the static electricity accumulation during the operation of the control cabinet body 1 according to the above traces. When a large number of traces appear on the transparent protective cover 4, it means that the surface of the control cabinet body 1 is prone to high-frequency accumulation of electric charge, and the grounding device of the control cabinet body 1 needs to be inspected and maintained. At the same time, the capillary cracks 402 opened on the acrylic plate 401 can make the above traces clearer.

[0031] It is worth noting that the power supply circuit of the electrical appliance in this solution is a well-known technology to those skilled in the art, so it is not disclosed in detail in this application. Those skilled in the art can make a reasonable design based on the existing technology.

[0032] The above are only preferred specific implementations of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A leakage current detection type electrical control cabinet, comprising a control cabinet body (1), characterized in that: An insulating bracket (2) is provided at the lower side of the control cabinet body (1); a grounding plate (3) matching the insulating bracket (2) is fixedly connected to one end of the insulating bracket (2) close to the control cabinet body (1); a transparent protective cover (4) is connected between the control cabinet body (1) and the insulating bracket (2); the transparent protective cover (4) is respectively connected to the control cabinet body (1) and the insulating bracket (2); a light-emitting board (5) is fixedly connected to the lower end of the control cabinet body (1); a fiber cluster (6) is fixedly connected to the lower end of the control cabinet body (1); the fiber cluster (6) includes a plurality of conductive fibers (601); the plurality of conductive fibers (601) are triangular shaped. The conductive fibers (601) are in a three-dimensional spiral shape, and adjacent conductive fibers (601) are intertwined to form a plurality of three-dimensional spatial structures. The outer side of the conductive fibers (601) is coated with an insulating outer skin (602) that matches the conductive fibers (601). The length of the conductive fibers (601) and the insulating outer skin (602) after being stretched is greater than the gap between the conductive fibers (601) and the grounding plate (3). The end of the conductive fibers (601) away from the control cabinet body (1) is fixedly connected to a ball head (603). The ball head (603) is made of a transparent insulating material, and is filled with a fluorescent material. A plurality of prefabricated grooves (605) are cut on the inner wall of the ball head (603).

2. According to claim 1, a leakage current detection type electrical control cabinet, characterized in that: The ball head (603) is filled with a filling sponge (604), and the filling sponge (604) has a high affinity with the fluorescent material.

3. According to claim 1, a leakage current detection type electrical control cabinet, characterized in that: The insulating outer skin (602) is made of a non-transparent material.

4. According to claim 1, a leakage current detection type electrical control cabinet, characterized in that: There is an obvious gap between the insulating sheath (602) and the ball head (603).

5. According to claim 1, a leakage current detection type electrical control cabinet, characterized in that: The conductive fiber (601) and the insulating outer sheath (602) maintain a three-dimensional spiral shape in the absence of external force.

6. According to the leakage current detection type electrical control cabinet of claim 1, it is characterized by: An invisible handle is cut on the side wall of the transparent protective cover (4).

7. According to claim 1, a leakage current detection type electrical control cabinet, characterized in that: The transparent protective cover (4) comprises an acrylic plate (401), and a plurality of capillary cracks (402) are drilled on the inner wall of the acrylic plate (401).

8. According to claim 7, a leakage current detection type electrical control cabinet, characterized in that: The surface of the nickel coin on the acrylic plate (401) is polished, while the cracks of the hairline cracks (402) are frosted.

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