Anti-misoperation device for low-voltage air switch

Abstract

The application discloses a kind of anti-misoperation devices for low-voltage air switch, including box body, cover and connecting piece, box body has accommodating cavity, first open mouth and second open mouth, first open mouth and second open mouth are communicated with accommodating cavity, box body is set in low-voltage air switch by first open mouth cover;Cover is hinged to box body;Connecting piece is connected with box body, connecting piece includes the connecting part for connecting matrix;Wherein, at least one of cover and box body has display area for showing device information.The anti-misoperation device for low-voltage air switch of the embodiment of the application, operating personnel can confirm the device needing to be operated through the device-related information displayed by display area, then switch the cover to the open state, and then operate the low-voltage air switch through the second open mouth, so as to further reduce the risk of misoperation due to identification error of operating personnel, and improve the power system power supply reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of low-voltage air switch protection devices, and particularly relates to a misoperation prevention device for a low-voltage air switch. BACKGROUND

[0002] In a power plant direct current system distribution panel, an AC / DC distribution panel, a UPS system distribution panel and other distribution systems, a same distribution panel is usually equipped with dozens of low-voltage air switches, and all are important loads; in daily equipment maintenance, the low-voltage distribution switches need to be frequently switched on and off, and the large use of the low-voltage air switches leads to a high risk of equipment misoperation, if the equipment is operated incorrectly, it may cause a non-planned shutdown of a generator unit, affect the power system power supply reliability, and even cause a major accident or economic loss. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art to some extent.

[0004] To this end, an embodiment of the present application provides a misoperation prevention device for a low-voltage air switch, an operator can confirm the equipment to be operated through the equipment related information displayed in the display area, and then switch the cover to an open state, so as to operate the low-voltage air switch through the second opening, thereby further reducing the risk of misoperation due to identification error of the operator, and improving the power system power supply reliability.

[0005] The misoperation prevention device for a low-voltage air switch provided by the embodiment of the present application comprises a box body, a cover and a connecting piece, the box body has a containing cavity, a first opening and a second opening, the first opening and the second opening both communicate with the containing cavity, and the box body is covered on the low-voltage air switch through the first opening; the cover is hinged to the box body, so as to switch the cover between a closed state of plugging the second opening and an open state of opening the second opening; the connecting piece is connected with the box body, and the connecting piece comprises a connecting part for connecting a base; wherein at least one of the cover and the box body has a display area for displaying equipment information.

[0006] In some embodiments, the connecting piece is a magnet.

[0007] In some embodiments, at least a part of the box body is made of a transparent material.

[0008] In some embodiments, the cover has a first side wall and a second side wall which are parallel to each other, in the closed state, the first side wall is arranged towards the second opening, and the first side wall and the second side wall both have the display area.

[0009] In some embodiments, the cover is connected with a hinge shaft, which is rotatably connected with the box body; the anti-misoperation device for the low-voltage air switch further comprises a limiting assembly, which comprises a mounting seat and limiting blocks, the mounting seat is connected with the box body, the mounting seat is provided with limiting grooves, and the limiting blocks are slidably connected with the hinge shaft, so that the limiting blocks can be matched with the limiting grooves when the cover is in the open state.

[0010] In some embodiments, the limiting assembly further comprises elastic members, which apply elastic force to the limiting blocks towards the limiting grooves when the cover is in the open state.

[0011] In some embodiments, the anti-misoperation device for the low-voltage air switch further comprises a releasing assembly, which comprises a traction rope, a first end of the traction rope is connected with the limiting blocks, and a second end of the traction rope extends to the outside of the mounting seat, so as to drive the limiting blocks to slide away from the limiting grooves by pulling the second end of the traction rope.

[0012] In some embodiments, the number of the limiting blocks and the limiting grooves is both two, the two limiting blocks are respectively a first limiting block and a second limiting block, and the two limiting grooves are respectively a first limiting groove and a second limiting groove; when the cover is in the open state, the first limiting block is matched with the first limiting groove, and the second limiting block is matched with the second limiting groove; when the cover is in the closed state, the first limiting block is matched with the second limiting groove, and the second limiting block is matched with the first limiting groove.

[0013] In some embodiments, the display area of the second side wall is a second display area, and the cover is provided with an illuminating lamp arranged towards the second display area.

[0014] In some embodiments, the first limiting block is provided with a first contact point, and the groove wall of the first limiting groove is provided with a second contact point; in the open state of the cover, the first contact point abuts against the second contact point, so as to electrify the illuminating lamp.

[0015] The anti-misoperation device for the low-voltage air switch of the embodiment of the application is characterized in that the box cover is arranged on the low-voltage air switch and is fixed through the connecting piece, so that the low-voltage air switch is located in the containing cavity, and meanwhile, the device-related information is displayed through the display area; when the device is running, the cover is in the closed state, and the operator cannot directly operate the low-voltage air switch, so that the risk of misoperation caused by the misoperation of the operator can be reduced; when the low-voltage air switch needs to be operated, the operator can reconfirm the device that needs to be operated according to the device-related information displayed through the display area, and then switches the cover to the open state, so that the low-voltage air switch can be operated through the second opening, thereby further reducing the risk of misoperation caused by the misidentification of the operator and improving the power system power supply reliability. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structure schematic diagram of the cover of the anti-misoperation device for the low-voltage air switch in the closed state according to an embodiment of the application.

[0017] Figure 2 FIG. 2 is a structure schematic diagram of the cover of the anti-misoperation device for the low-voltage air switch in the open state according to an embodiment of the application.

[0018] Figure 3 FIG. 3 is a structure schematic diagram of the cover of the anti-misoperation device for the low-voltage air switch in the open state according to another embodiment of the application.

[0019] Figure 4 FIG. 4 is a structure schematic diagram of the limiting assembly of the anti-misoperation device for the low-voltage air switch according to another embodiment of the application (the cover is in the open state).

[0020] Figure 5 FIG. 5 is a structure schematic diagram of the first limiting block and the second limiting block of the anti-misoperation device for the low-voltage air switch according to another embodiment of the application when the first limiting block and the second limiting block are attached.

[0021] Figure 6 FIG. 6 is a structure schematic diagram of the releasing assembly of the anti-misoperation device for the low-voltage air switch according to another embodiment of the application.

[0022] Reference signs:

[0023] 100, anti-misoperation device;

[0024] 1, box cover; 11, containing cavity; 12, first opening; 13, second opening; 14, outer side plate;

[0025] 2, cover; 21, first display area; 22, second display area;

[0026] 3, magnet;

[0027] 4, hinge shaft; 41, mounting block;

[0028] 5, limiting assembly; 51, mounting seat; 511, first limiting groove; 512, second limiting groove; 52, first limiting block; 521, sliding groove; 53, second limiting block; 54, spring;

[0029] 6, release assembly; 61, first traction rope; 62, second traction rope; 63, traction column;

[0030] 7, illuminating lamp; 71, first contact; 72, second contact. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0032] As shown in Figure 1 and Figure 2 The anti-misoperation device 100 for low-voltage air switch of the embodiment of the present application includes a box body 1, a cover body 2 and a connecting piece, the box body 1 has a containing cavity 11, a first opening 12 and a second opening 13, the first opening 12 and the second opening 13 both communicate with the containing cavity 11, and the box body 1 is covered on the low-voltage air switch through the first opening 12; the cover body 2 is hinged to the box body 1 to switch between a closed state of blocking the second opening 13 and an open state of opening the second opening 13; the connecting piece is connected with the box body 1, and the connecting piece includes a connecting part for connecting a base body; wherein at least one of the cover body 2 and the box body 1 has a display area for displaying device information.

[0033] The anti-misoperation device 100 for low-voltage air switch of the embodiment of the present application, the box body 1 is covered on the low-voltage air switch and fixed through the connecting piece, so that the low-voltage air switch is located in the containing cavity 11, and at the same time, the device related information is displayed through the display area; when the device is running, the cover body 2 is in the closed state, and the operator cannot directly operate the low-voltage air switch, which can reduce the risk of misoperation of the operator due to mis-touch; when the low-voltage air switch needs to be operated, the operator can reconfirm the device that needs to be operated through the device related information displayed on the display area, and then switch the cover body 2 to the open state, so as to operate the low-voltage air switch through the second opening 13, thereby further reducing the risk of misoperation of the operator due to misidentification and improving the power system power supply reliability.

[0034] It can be understood that the device information displayed on the display area is: the double name and number of the device.

[0035] Understandably, low-voltage air circuit breakers come in various voltage levels, and the dimensions of the circuit breakers differ depending on the voltage level. The dimensions of the housing 1 can be adjusted according to the actual dimensions of the low-voltage air circuit breaker. For example, if the length of a 220V low-voltage air circuit breaker is 45mm, the width is 35mm, and the height is 20mm, then the length of the housing 1 is 55mm, the width is 45mm, the height is 25mm, and the wall thickness is 2mm.

[0036] It is understood that the substrate is a structure for mounting the housing 1, such as a mounting carrier for a low-voltage air switch, or a low-voltage air switch itself.

[0037] In some embodiments, the connector is a magnet 3.

[0038] It is known that the bottom sides of the low-voltage air switches in the DC system distribution panel, AC / DC distribution panel, and UPS system distribution panel of the power plant are all metal structures.

[0039] Therefore, by setting the connector as a magnet 3, the box 1 can be attracted to the low-pressure air switch by the magnet 3, thereby realizing the connection between the box 1 and the low-pressure air switch. At the same time, the structure of the connector is relatively simple, making the installation of the anti-misoperation device 100 more convenient.

[0040] Of course, in other embodiments, if the bottom sides of the low-voltage air switch are non-metallic structures, the connecting parts can also be bolts, snap-fit ​​structures, etc., as long as the box 1 can be placed on the low-voltage air switch and the position of the box 1 can be fixed.

[0041] As an example, there are two magnets 3, which are respectively arranged on two opposite side walls of the housing 1. The housing 1 is covered onto the low-pressure air switch through the first opening 12. The housing 1 can simultaneously attract the metal structures on both sides of the low-pressure air switch through the two magnets 3, thereby improving the stability of the housing 1 installation. The connecting part is used by the magnets 3 to attract and adhere to the side of the low-pressure air switch.

[0042] In some embodiments, such as Figure 1 and Figure 2 As shown, at least a portion of the box 1 is made of a transparent material.

[0043] With the above settings, operators can directly observe the actual status of the low-pressure air switch inside box 1 through the transparent material; for example, if the switch trips during equipment operation, the actual position of the switch can be seen in the transparent area, which makes it easier for operators to judge the cause of equipment failure.

[0044] Optionally, the entire box 1 may be made of a transparent material, such as acrylic.

[0045] like Figure 1 andFigure 2 As shown, the box body 1 has an outer side wall arranged opposite to the first opening 12. A portion of the outer side wall is open to form the second opening 13 mentioned above. The second opening 13 occupies half of the outer side wall, and the other portion of the outer side wall is closed to form an outer side plate 14. When the cover 2 is in the closed state, the cover 2 and the outer side plate 14 form a complete outer side wall.

[0046] In some embodiments, such as Figure 1 and Figure 2 As shown, the cover 2 has a first sidewall and a second sidewall that are parallel to each other. In the closed state, the first sidewall is arranged toward the second opening 13, and both the first sidewall and the second sidewall have the aforementioned display area.

[0047] The display areas on both the first and second sidewalls can be used to display device-related information. When the cover 2 is closed, the device information corresponding to the low-voltage air switch can be directly obtained through the display area on the first sidewall; when the cover 2 is open, the device information corresponding to the low-voltage air switch can be directly obtained through the display area on the second sidewall, thereby further reducing the risk of misoperation of the low-voltage air switch. Figure 1 and Figure 2 As shown, the display area on the first side wall is the first display area 21, and the display area on the second side wall is the second display area 22. In addition to the equipment information corresponding to the low-voltage air switch, the second display area 22 also has prompts such as "Do not close, people are working".

[0048] It is known that when operating equipment, it is necessary to disconnect the power to ensure the safety of the operators. Usually, a warning sign is hung on the low-voltage air switch, which reads "Do not close the switch, people are working".

[0049] Therefore, operators no longer need to hang warning signs on the low-voltage air switch when operating the equipment, thereby improving operational efficiency and reducing enterprise production costs.

[0050] Optionally, the cover 2 is made of an opaque material.

[0051] This makes it more advantageous to display information on the device.

[0052] In some embodiments, such as Figure 3 and Figure 4 As shown, a hinge shaft 4 is connected to the cover 2, and the hinge shaft 4 is rotatably connected to the box 1; the anti-misoperation device 100 for low-voltage air switch also includes a limiting component 5, which includes a mounting base 51 and a limiting block. The mounting base 51 is connected to the box 1 and has a limiting groove. The limiting block is slidably connected to the hinge shaft 4 so that the limiting block can engage with the limiting groove when the cover 2 is in the open state.

[0053] With the above settings, when the cover 2 is switched to the open state, the limit block slides and cooperates with the limit groove, which can prevent the hinge shaft 4 from continuing to rotate, thereby preventing the cover 2 from rotating and keeping the cover 2 in the open state. This prevents the cover 2 from rotating and switching to the closed state due to accidental touch by unauthorized personnel or external vibrations when the operator is performing equipment maintenance or other operations, thus improving the operator's operational safety.

[0054] like Figure 3 As shown, the hinge shaft 4 is fixedly connected to the cover 2, and the cover 2 is hinged to the box 1 through the hinge shaft 4. When the cover 2 switches between the open state and the closed state, the hinge shaft 4 rotates accordingly.

[0055] Optionally, such as Figure 3 As shown, there are two limiting components 5, which are respectively located on both sides of the hinge shaft 4.

[0056] As a result, the forces on both ends of the hinge shaft 4 are even, and the stability of the cover 2 is higher when it is in the open state.

[0057] In some embodiments, the limiting component 5 further includes an elastic member, which applies an elastic force toward the limiting groove to the limiting block when the cover 2 is in the open state.

[0058] By setting up a spring element, when the cover 2 is switched to the open state, the spring element can drive the limiting block to slide into the limiting groove, realizing the automatic cooperation between the limiting block and the limiting groove, making the operation simpler.

[0059] Optionally, the elastic element is a spring 54.

[0060] In some embodiments, such as Figure 4 and Figure 5 As shown, there are two limiting blocks and two limiting grooves. The two limiting blocks are the first limiting block 52 and the second limiting block 53, and the two limiting grooves are the first limiting groove 511 and the second limiting groove 512. When the cover 2 is in the open state, the first limiting block 52 engages with the first limiting groove 511, and the second limiting block 53 engages with the second limiting groove 512. When the cover 2 is in the closed state, the first limiting block 52 engages with the second limiting groove 512, and the second limiting block 53 engages with the first limiting groove 511.

[0061] With the above settings, when the operator is operating the equipment, the cover 2 can be kept in the open position to serve as a reminder and prevent unauthorized personnel from closing the low-voltage air switch, thus ensuring the safety of the operator; at the same time, the cover 2 can also be kept in the closed position to reduce the risk of misoperation of the low-voltage air switch.

[0062] As an example, such as Figure 4As shown, the mounting base 51 is connected to the box body 1 by bolts. The mounting base 51 has a mounting groove inside. The two sides of the mounting groove are respectively formed by a semi-circular first limiting groove 511 and a second limiting groove 512. The first limiting groove 511 and the second limiting groove 512 are arranged at intervals.

[0063] The end of the hinge shaft 4 is fixedly fitted with a mounting block 41, which is rectangular in shape. The first limiting block 52 and the second limiting block 53 are both semi-circular and are arranged opposite to each other. Both the first limiting block 52 and the second limiting block 53 have a sliding groove 521 and are slidably connected to the mounting block 41 through the sliding groove 521. The sides of the first limiting block 52 and the second limiting block 53 that are close to each other are flat and parallel to each other. The sides of the first limiting block 52 and the second limiting block 53 that are close to each other have circular grooves. There are two springs 54, which are respectively located on both sides of the mounting block 41 and between the first limiting block 52 and the second limiting block 53. The two ends of the springs 54 are respectively located in the two circular grooves and are in a compressed state.

[0064] like Figure 5 As shown, bringing the first limiting block 52 and the second limiting block 53 close together allows them to fit together to form a complete circle coaxial with the hinge shaft 4. At this time, the first limiting block 52 and the second limiting block 53 disengage from the first limiting groove 511 and the second limiting groove 512 respectively, and the first limiting block 52 and the second limiting block 53 can rotate with the hinge shaft 4; in other words, the cover 2 can rotate freely to adjust the state of the cover 2.

[0065] When the cover 2 switches from the closed state to the open state, the first limiting block 52 and the second limiting block 53 rotate accordingly. Under the action of the spring 54, the first limiting block 52 engages with the first limiting groove 511, and the second limiting block 53 engages with the second limiting groove 512, thereby keeping the cover 2 in the open state. When the cover 2 switches from the open state to the closed state, the first limiting block 52 and the second limiting block 53 rotate accordingly. Under the action of the spring 54, the first limiting block 52 engages with the second limiting groove 512, and the second limiting block 53 engages with the first limiting block 52, thereby keeping the cover 2 in the closed state.

[0066] In some embodiments, such as Figure 6 As shown, the anti-misoperation device 100 for low-voltage air switches also includes a release component 6, which includes a traction rope. The first end of the traction rope is connected to the limit block, and the second end of the traction rope extends to the outside of the mounting base 51 so as to drive the limit block to slide away from the limit groove by pulling the second end of the traction rope.

[0067] When it is necessary to rotate the cover 2, the second end of the traction rope can be pulled. Under the action of the traction rope, the limiting block is driven to slide away from the limiting groove. After the limiting block is freed from the limitation of the limiting groove, the cover 2 can be rotated freely.

[0068] As an example, such as Figure 6 As shown, the mounting base 51 has a circular through hole on the side away from the hinge shaft 4, and the through hole is coaxial with the hinge shaft 4; there are two traction ropes, namely a first traction rope 61 and a second traction rope 62. The first end of the first traction rope 61 is connected to the position of the first limiting block 52 away from the second limiting block 53, and the first end of the second traction rope 62 is connected to the position of the second limiting block 53 away from the first limiting block 52. The first traction rope 61 and the second traction rope 62 gradually approach each other in the direction away from the hinge shaft 4, and both pass through the through hole. The second ends of the first traction rope 61 and the second traction rope 62 are connected to each other by a cylindrical pull post 63; pulling the pull post 63 outward can simultaneously drive the first limiting block 52 and the second limiting block 53 to slide relative to each other until they fit together, so that the cover 2 can rotate freely.

[0069] In some embodiments, such as Figure 2 As shown, the display area of ​​the second side wall is the second display area 22, and the cover 2 is provided with a lighting lamp 7 arranged towards the second display area 22.

[0070] When the low-voltage air switch is in a dark environment and the operator needs to perform equipment maintenance or other operations, the lighting 7 can illuminate the second display area 22 to remind other personnel that the low-voltage air switch must not be closed, thereby preventing accidental operation in the dark from endangering the operator who is performing equipment maintenance or other work.

[0071] Optionally, the cover 2 has a built-in battery for powering the lighting lamp 7. In some embodiments, such as Figure 6 As shown, the first limiting block 52 is provided with a first contact 71, and the first limiting groove 511 is provided with a second contact 72. When the cover 2 is open, the first contact 71 abuts against the second contact 72 to power on the lighting lamp 7.

[0072] With the above settings, the first limiting block 52 cooperates with the first limiting groove 511 under the action of the spring 54, and the first contact 71 abuts against the second contact 72, and the lighting lamp 7 is powered on; in other words, when the cover 2 is switched to the open state, the lighting lamp 7 illuminates the second display area 22, making the equipment information in the second display area 22 more obvious, thereby preventing accidental operation in the dark environment from causing danger to the operators who are performing equipment maintenance and other work.

[0073] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A device (100) for preventing misoperation of a low-voltage air switch, characterized in that, include: The box body (1) has a receiving cavity (11), a first opening (12) and a second opening (13), both the first opening (12) and the second opening (13) are connected to the receiving cavity (11), and the box body (1) covers the low-pressure air switch through the first opening (12); A cover (2) is hinged to the box body (1) so that the cover (2) can switch between a closed state that blocks the second opening (13) and an open state that opens the second opening (13); A connector, which is connected to the housing (1), the connector including a connecting portion for connecting to the base; At least one of the cover (2) and the box (1) has a display area for displaying device information; The cover (2) has a first sidewall and a second sidewall that are parallel to each other. In the closed state, the first sidewall is arranged toward the second opening (13), and both the first sidewall and the second sidewall have the display area. A hinge shaft (4) is connected to the cover (2), and the hinge shaft (4) is rotatably connected to the box (1); The anti-misoperation device (100) for low-voltage air switch further includes a limiting component (5), which includes a mounting base (51) and a limiting block. The mounting base (51) is connected to the housing (1) and has a limiting groove. The limiting block is slidably connected to the hinge shaft (4) so ​​that the limiting block can engage with the limiting groove when the cover (2) is in the open state. The limiting component (5) also includes an elastic member. When the cover (2) is in the open state, the elastic member applies an elastic force toward the limiting groove to the limiting block. It also includes a release component (6), which includes a traction rope, a first end of which is connected to the limiting block, and a second end of which extends to the outside of the mounting base (51) to drive the limiting block to slide away from the limiting groove by pulling the second end of the traction rope.

2. The anti-misoperation device (100) for a low-voltage air switch according to claim 1, characterized in that, The connector is a magnet (3).

3. The anti-misoperation device (100) for a low-voltage air switch according to claim 1, characterized in that, At least a portion of the box (1) is made of a transparent material.

4. The anti-misoperation device (100) for a low-voltage air switch according to claim 1, characterized in that, The number of the limiting blocks and the limiting grooves are both two. The two limiting blocks are the first limiting block (52) and the second limiting block (53), and the two limiting grooves are the first limiting groove (511) and the second limiting groove (512). When the cover (2) is in the open state, the first limiting block (52) cooperates with the first limiting groove (511), and the second limiting block (53) cooperates with the second limiting groove (512); When the cover (2) is in the closed state, the first limiting block (52) cooperates with the second limiting groove (512), and the second limiting block (53) cooperates with the first limiting groove (511).

5. The anti-misoperation device (100) for a low-voltage air switch according to claim 4, characterized in that, The display area of ​​the second sidewall is the second display area (22), and the cover (2) is provided with a lighting lamp (7) arranged toward the second display area (22).

6. The anti-misoperation device (100) for a low-voltage air switch according to claim 5, characterized in that, The first limiting block (52) is provided with a first contact (71), and the first limiting groove (511) is provided with a second contact (72). When the cover (2) is open, the first contact (71) abuts against the second contact (72) so that the lighting lamp (7) is powered on.

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