Anti-misoperation device for low-voltage air switch

Abstract

The anti-misoperation device for the low-voltage air switch comprises a box body, a cover body and a connecting piece, the box body is provided with a containing cavity, a first opening and a second opening, the first opening and the second opening are both communicated with the containing cavity, and the box body covers the low-voltage air switch through the first opening; the cover body is hinged to the box body; the connecting piece is connected with the box body and comprises a connecting part used for being connected with the base body; at least one of the cover body and the box body is provided with a display area used for displaying equipment information. According to the anti-misoperation device for the low-voltage air switch provided by the embodiment of the invention, an operator can confirm the equipment needing to be operated through the equipment related information displayed in the display area, and then the low-voltage air switch can be operated through the second opening by switching the cover body to the open state; therefore, the risk of misoperation caused by wrong identification of operators is further reduced, and the power supply reliability of a power system is improved.

Description

Technical Field

[0001] The invention relates to the technical field of low-pressure air switch protection devices, and in particular to an anti-misoperation device for a low-pressure air switch. Background Art

[0002] In power plant DC system distribution panels, AC / DC distribution panels, UPS system distribution panels and other distribution systems, the same distribution panel is usually equipped with dozens of low-voltage air switches, all of which are important loads. In daily equipment inspection and maintenance, it is necessary to frequently open and close the low-voltage distribution switches. The large-scale use of low-voltage air switches leads to a high risk of equipment misoperation. If the equipment is operated incorrectly, it may cause unplanned shutdown of the generator set, affect the power supply reliability of the power system, and even cause major accidents or economic losses. Summary of the invention

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

[0004] To this end, an embodiment of the present invention proposes an anti-misoperation device for a low-pressure air switch. The operator can confirm the equipment that needs to be operated through the equipment-related information displayed in the display area, and then switch the cover to an open state before operating the low-pressure air switch through the second opening, thereby further reducing the risk of misoperation due to identification errors by the operator and improving the power supply reliability of the power system.

[0005] The anti-misoperation device for a low-pressure air switch according to an embodiment of the present invention comprises a box body, a cover body and a connecting piece, the box body having a accommodating cavity, a first opening and a second opening, the first opening and the second opening are both connected to the accommodating cavity, and the box body is covered on the low-pressure air switch through the first opening; the cover body is hinged to the box body so that the cover body can switch between a closed state blocking the second opening and an open state opening the second opening; the connecting piece is connected to the box body, and the connecting piece comprises a connecting portion for connecting to a base; wherein at least one of the cover body and the box body has a display area for displaying device information.

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

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

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

[0009] In some embodiments, a hinge shaft is connected to the cover body, and the hinge shaft is rotatably connected to the box body; the anti-misoperation device for the low-pressure air switch also includes a limit assembly, and the limit assembly includes a mounting seat and a limit block, the mounting seat is connected to the box body, the mounting seat has a limit groove, and the limit block is slidably connected to the hinge shaft so that the limit block can cooperate with the limit groove when the cover body is in the open state.

[0010] In some embodiments, the limiting assembly further includes an elastic member, and when the cover body is in the open state, the elastic member applies an elastic force to the limiting block toward the limiting groove.

[0011] In some embodiments, the anti-misoperation device for the low-pressure air switch also includes a release component, which includes a traction rope, a first end of which is connected to the limit block, and a second end of which extends to the outside of the mounting seat, so as to drive the limit block to slide in a direction away from the limit groove by pulling the second end of the traction rope.

[0012] In some embodiments, the number of the limit blocks and the limit slots are both two, the two limit blocks are respectively the first limit block and the second limit block, and the two limit slots are respectively the first limit slot and the second limit slot; when the cover body is in an open state, the first limit block cooperates with the first limit slot, and the second limit block cooperates with the second limit slot; when the cover body is in a closed state, the first limit block cooperates with the second limit slot, and the second limit block cooperates with the first limit slot.

[0013] In some embodiments, the display area of ​​the second side wall is a second display area, and the cover body is provided with a lighting lamp arranged toward the second display area.

[0014] In some embodiments, a first contact is disposed on the first limiting block, and a second contact is disposed on the groove wall of the first limiting groove. When the cover is in the open state, the first contact abuts against the second contact to power on the lighting lamp.

[0015] In the anti-misoperation device for a low-pressure air switch of an embodiment of the present invention, the box cover is arranged on the low-pressure air switch and fixed by a connecting piece, so that the low-pressure air switch is located in the accommodating cavity, and at the same time, the device-related information is displayed through the display area; when the equipment is running, the cover body is in a closed state, and the operator cannot directly operate the low-pressure air switch, which can reduce the risk of the operator making a wrong operation due to accidental touch; when the low-pressure air switch needs to be operated, the operator can reconfirm the equipment to be operated through the device-related information displayed in the display area, and then switch the cover body to an open state before operating the low-pressure air switch through the second opening, thereby further reducing the risk of the operator making a wrong operation due to identification errors and improving the power supply reliability of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The invention is a schematic structural diagram of a cover of an anti-misoperation device for a low-pressure air switch in a closed state according to an embodiment of the present invention.

[0017] Figure 2 The invention is a schematic structural diagram of an anti-misoperation device for a low-pressure air switch according to an embodiment of the present invention, in which the cover is in an open state.

[0018] Figure 3 It is a structural schematic diagram of another embodiment of the present invention, in which the cover of the anti-misoperation device for a low-pressure air switch is in an open state.

[0019] Figure 4 It is a structural schematic diagram of a limit assembly of an anti-misoperation device for a low-pressure air switch according to another embodiment of the present invention (the cover is in an open state).

[0020] Figure 5 It is a structural schematic diagram of a first limit block and a second limit block of an anti-misoperation device for a low-pressure air switch according to another embodiment of the present invention when they are attached.

[0021] Figure 6 It is a structural schematic diagram of a release assembly of an anti-misoperation device for a low-pressure air switch according to another embodiment of the present invention.

[0022] Reference numerals:

[0023] 100. Anti-misoperation device;

[0024] 1. Box body; 11. Accommodating cavity; 12. First opening; 13. Second opening; 14. External plate;

[0025] 2. Cover body; 21. First display area; 22. Second display area;

[0026] 3. Magnet;

[0027] 4. Articulated 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. Pulling column;

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

[0031] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0032] like Figure 1 and Figure 2 As shown, the anti-misoperation device 100 for a low-pressure air switch of an embodiment of the present invention includes a box body 1, a cover body 2 and a connecting piece, the box body 1 has a accommodating cavity 11, a first opening 12 and a second opening 13, the first opening 12 and the second opening 13 are both connected to the accommodating cavity 11, and the box body 1 is covered on the low-pressure air switch through the first opening 12; the cover body 2 is hinged to the box body 1 so that the cover body 2 can switch between a closed state blocking the second opening 13 and an open state opening the second opening 13; the connecting piece is connected to the box body 1, and the connecting piece includes a connecting portion for connecting to a base; wherein, at least one of the cover body 2 and the box body 1 has a display area for displaying device information.

[0033] In the anti-misoperation device 100 for a low-pressure air switch of an embodiment of the present invention, the box body 1 is covered on the low-pressure air switch and fixed by a connecting piece, so that the low-pressure air switch is located in the accommodating chamber 11, and at the same time, the device-related information is displayed through the display area; when the equipment is running, the cover body 2 is in a closed state, and the operator cannot directly operate the low-pressure air switch, which can reduce the risk of misoperation caused by accidental touch by the operator; when the low-pressure air switch needs to be operated, the operator can reconfirm the equipment to be operated through the equipment-related information displayed in the display area, and then switch the cover body 2 to an open state before operating the low-pressure air switch through the second opening 13, thereby further reducing the risk of misoperation caused by identification errors by the operator and improving the power supply reliability of the power system.

[0034] It is understandable that the device information displayed on the display area is: the dual name and number of the device.

[0035] It is understandable that the low-pressure air switch has a variety of voltage levels, and the sizes of switches of different voltage levels are different. The size of the box body 1 can be adjusted according to the actual size of the low-pressure air switch; for example: the length of a 220V low-pressure air switch is 45mm, the width is 35mm, and the height is 20mm, then the length of the box body 1 is 55mm, the width is 45mm, the height is 25mm, and the wall thickness is 2mm.

[0036] It can be understood that the base is a structure for mounting the box body 1, such as a mounting carrier of a low-pressure air switch, or a low-pressure air switch.

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

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

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

[0040] Of course, in other embodiments, if the bottom two sides of the low-pressure air switch are non-metallic structures, the connecting parts can also be bolts, clamping structures, etc., as long as the box body 1 can be covered on the low-pressure air switch and the position of the box body 1 can be fixed.

[0041] As an example, there are two magnets 3, which are arranged on two opposite side walls of the box body 1, and the box body 1 is covered on the low-pressure air switch through the first opening 12. The box body 1 can simultaneously adsorb the metal structures on both sides of the low-pressure air switch through the two magnets 3, thereby improving the installation stability of the box body 1. Among them, the connecting part is the magnet 3 used to adsorb and fit the side of the low-pressure air switch.

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

[0043] Through the above arrangement, the operator can directly observe the actual state of the low-pressure air switch in the box body 1 through the transparent material; for example, when the equipment is in operation, if the switch trips, the actual position of the switch can be seen in the transparent area, which is more conducive to the operator to determine the cause of the equipment failure.

[0044] Optionally, the box body 1 is entirely made of a transparent material, such as acrylic.

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

[0046] In some embodiments, Figure 1 and Figure 2 As shown, the cover body 2 has a first side wall and a second side wall that are parallel to each other. In the closed state, the first side wall is arranged toward the second opening 13, and both the first side wall and the second side wall have the above-mentioned display area.

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

[0048] It is known that when operating the equipment, the equipment needs to be powered off to ensure the safety of the operators. Usually, a warning sign needs to be hung on the low-pressure air switch, with the words "Do not close the switch, someone is working" on the warning sign.

[0049] As a result, operators do not need to hang warning signs on the low-pressure air switches when operating the equipment, thereby improving operational efficiency and reducing enterprise production costs.

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

[0051] This is more conducive to displaying device information.

[0052] In some embodiments, Figure 3 and Figure 4 As shown, a hinge shaft 4 is connected to the cover body 2, and the hinge shaft 4 is rotatably connected to the box body 1; the anti-misoperation device 100 for the low-pressure air switch also includes a limit assembly 5, the limit assembly 5 includes a mounting seat 51 and a limit block, the mounting seat 51 is connected to the box body 1, the mounting seat 51 has a limit groove, and the limit block is slidably connected to the hinge shaft 4 so that the limit block can cooperate with the limit groove when the cover body 2 is in the open state.

[0053] Through the above arrangement, when the cover body 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, and then prevent the cover body 2 from rotating, so that the cover body 2 remains in the open state, preventing the cover body 2 from rotating and switching to the closed state due to accidental touch by unrelated personnel, external vibration and other factors when the operator is performing equipment maintenance and other operations, thereby improving the operating safety of the operator.

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

[0055] Alternatively, if Figure 3 As shown, there are two limit assemblies 5 , and the two limit assemblies 5 are respectively arranged on both sides of the hinge shaft 4 .

[0056] As a result, the two ends of the hinge shaft 4 are evenly stressed, and the cover body 2 is more stable when in the open state.

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

[0058] By providing an elastic member, when the cover body 2 is switched to the open state, the elastic member can drive the limit block to slide toward the limit groove, thereby achieving automatic matching between the limit block and the limit groove, and the operation is simpler.

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

[0060] In some embodiments, Figure 4 and Figure 5 As shown, the number of limit blocks and limit grooves are both two, the two limit blocks are respectively the first limit block 52 and the second limit block 53, and the two limit grooves are respectively the first limit groove 511 and the second limit groove 512; when the cover body 2 is in the open state, the first limit block 52 cooperates with the first limit groove 511, and the second limit block 53 cooperates with the second limit groove 512; when the cover body 2 is in the closed state, the first limit block 52 cooperates with the second limit groove 512, and the second limit block 53 cooperates with the first limit groove 511.

[0061] Through the above settings, when the operator is operating the equipment, the cover body 2 can be kept in an open state to serve as a reminder to prevent unrelated personnel from closing the low-pressure air switch, thereby ensuring the safety of the operator; at the same time, the cover body 2 can also be kept in a closed state to reduce the risk of misoperation of the low-pressure air switch.

[0062] As an example, Figure 4As shown, the mounting seat 51 is connected to the box body 1 by bolts, and a mounting groove is formed inside the mounting seat 51. Semicircular first limiting grooves 511 and second limiting grooves 512 are formed on both sides of the mounting groove, and the first limiting grooves 511 and the second limiting grooves 512 are arranged at intervals.

[0063] The end of the hinge shaft 4 is fixedly connected with a mounting block 41, and the mounting block 41 is in the shape of a rectangle; the first limit block 52 and the second limit block 53 are both semicircular, and the first limit block 52 and the second limit block 53 are arranged opposite to each other. The first limit block 52 and the second limit block 53 both have a slide groove 521, and are both slidably connected to the mounting block 41 through the slide groove 521. The sides of the first limit block 52 and the second limit block 53 that are close to each other are both flat and parallel to each other. The sides of the first limit block 52 and the second limit block 53 that are relatively close to each other have circular grooves. There are two springs 54, and the two springs 54 are respectively arranged on both sides of the mounting block 41. The spring 54 is arranged between the first limit block 52 and the second limit block 53, and the two ends of the spring 54 are respectively arranged in the two circular grooves, and the spring 54 is in a compressed state.

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

[0065] When the cover body 2 is switched from the closed state to the open state, the first limit block 52 and the second limit block 53 rotate accordingly, and under the action of the spring 54, the first limit block 52 cooperates with the first limit groove 511, and the second limit block 53 cooperates with the second limit groove 512, so that the cover body 2 remains in the open state. When the cover body 2 is switched from the open state to the closed state, the first limit block 52 and the second limit block 53 rotate accordingly, and under the action of the spring 54, the first limit block 52 cooperates with the second limit groove 512, and the second limit block 53 cooperates with the first limit block 52, so that the cover body 2 remains in the closed state.

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

[0067] When the cover body 2 needs to be rotated, the second end of the traction rope can be pulled. Under the action of the traction rope, the limit block is driven to slide in the direction away from the limit groove. After the limit block is free from the restriction of the limit groove, the cover body 2 can be freely rotated.

[0068] As an example, Figure 6 As shown, the side of the mounting seat 51 away from the hinge axis 4 has a circular through hole, and the through hole is coaxial with the hinge axis 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 limit block 52 away from the second limit block 53, the first end of the second traction rope 62 is connected to the position of the second limit block 53 away from the first limit block 52, the first traction rope 61 and the second traction rope 62 gradually approach each other in the direction away from the hinge axis 4, and both pass through the through hole, the second end of the first traction rope 61 and the second end of the second traction rope 62 are connected to each other through a cylindrical pulling column 63; pulling the pulling column 63 outward can simultaneously drive the first limit block 52 and the second limit block 53 to slide relative to each other until they fit together, so that the cover body 2 can rotate freely.

[0069] In some embodiments, Figure 2 As shown, the display area of ​​the second side wall is the second display area 22 , and the cover body 2 is provided with an illumination lamp 7 arranged toward the second display area 22 .

[0070] When the low-pressure air switch is in a dark environment and the operator needs to perform equipment maintenance and other operations, the lighting lamp 7 can illuminate the second display area 22 to remind other personnel that the low-pressure air switch is prohibited from being closed, thereby preventing misoperation in a dark environment and causing danger to the operator who is performing equipment maintenance and other operations.

[0071] Optionally, the cover 2 has a built-in battery, which is used to power the illuminating lamp 7. Figure 6 As shown, the first limiting block 52 is provided with a first contact 71 , and the groove wall of the first limiting groove 511 is provided with a second contact 72 . When the cover 2 is in the open state, the first contact 71 abuts against the second contact 72 to energize the lighting lamp 7 .

[0072] Through the above arrangement, the first limit block 52 is engaged with the first limit 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 energized; in other words, when the cover body 2 is switched to the open state, the lighting lamp 7 illuminates the second display area 22, making the device information in the second display area 22 more obvious, thereby preventing misoperation in a dark environment and causing danger to operators who are performing equipment maintenance and other work.

[0073] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A device (100) for preventing misoperation of a low-pressure air switch, characterized in that: include: A box body (1), the box body (1) having a containing cavity (11), a first opening (12) and a second opening (13), the first opening (12) and the second opening (13) both being in communication with the containing cavity (11), and the box body (1) being covered on the low-pressure air switch via the first opening (12); a cover body (2), the cover body (2) being hinged to the box body (1) so that the cover body (2) can be switched between a closed state for blocking the second opening (13) and an open state for opening the second opening (13); A connecting piece, the connecting piece is connected to the box body (1), and the connecting piece comprises a connecting portion for connecting to 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; The cover body (2) 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 toward the second opening (13), and both the first side wall and the second side wall have the display area.

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

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

4. The anti-misoperation device (100) for a low-pressure air switch according to claim 1, characterized in that: The cover body (2) is connected to a hinge shaft (4), and the hinge shaft (4) is rotatably connected to the box body (1); The anti-misoperation device (100) for a low-pressure air switch further comprises a limit assembly (5), wherein the limit assembly (5) comprises a mounting seat (51) and a limit block, wherein the mounting seat (51) is connected to the box body (1), the mounting seat (51) has a limit groove, and the limit block is slidably connected to the hinge shaft (4) so ​​that the limit block can be engaged with the limit groove when the cover body (2) is in the open state.

5. The anti-misoperation device (100) for a low-pressure air switch according to claim 4, characterized in that: The limiting assembly (5) further comprises an elastic member, and when the cover body (2) is in the open state, the elastic member applies an elastic force to the limiting block towards the limiting groove.

6. The anti-misoperation device (100) for a low-pressure air switch according to claim 5, characterized in that: It also includes a release component (6), which includes a traction rope, a first end of which is connected to the limit block, and a second end of which extends to the outside of the mounting seat (51), so as to drive the limit block to slide in a direction away from the limit groove by pulling the second end of the traction rope.

7. The anti-misoperation device (100) for a low-pressure air switch according to claim 4, characterized in that: The number of the limiting blocks and the limiting grooves are both two, the two limiting blocks are respectively a first limiting block (52) and a second limiting block (53), and the two limiting grooves are respectively a first limiting groove (511) and a second limiting groove (512); When the cover body (2) is in an 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 body (2) is in a 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).

8. The anti-misoperation device (100) for a low-pressure air switch according to claim 7, characterized in that: The display area of ​​the second side wall is a second display area (22), and the cover body (2) is provided with an illumination lamp (7) arranged toward the second display area (22).

9. The anti-misoperation device (100) for a low-pressure air switch according to claim 8, characterized in that: A first contact (71) is provided on the first limiting block (52), and a second contact (72) is provided on the groove wall of the first limiting groove (511); when the cover body (2) is in an open state, the first contact (71) abuts against the second contact (72) so that the lighting lamp (7) is powered on.

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