Valve connecting rod operation mistaken touch prevention locking device for high-voltage switch cabinet

Abstract

The utility model discloses a valve connecting rod operation mistaken touch prevention locking device for a high-voltage switch cabinet, which relates to the technical field of power equipment safety protection, and comprises a limiting body and a magnetic attraction assembly, and the two ends of the limiting body are respectively provided with an upper extension connecting arm and a lower extension connecting arm which are not completely closed. The upper extending connecting arm and the lower extending connecting arm are arranged on the periphery of the pin shaft in a sleeving mode and used for limiting relative rotation of the pin shaft, and then movement of the valve connecting rod is limited. The magnetic attraction assembly is fixedly arranged on the inner side of the limiting body and used for being attracted and fixed to a valve connecting rod. According to the utility model, the magnetic attraction effect and the mechanical locking are combined, double fixing forces are provided, the action of the valve connecting rod is effectively limited, and safety accidents caused by the movement of the baffle plate of the high-voltage switch cabinet due to false touch or false action can be prevented; meanwhile, the stability of the valve connecting rod in the locking state is remarkably improved, misoperation caused by vibration or accidental impact is reduced, and the safety and reliability of the high-voltage switch cabinet in the operation process are effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power equipment safety protection, specifically relates to a valve link operation anti-misoperation locking device for high voltage switch cabinet. BACKGROUND

[0002] In the actual operation and operation scene of the high voltage switch cabinet, the misoperation problem of the valve link has been one of the key safety hazards that have plagued the power industry. In the running process of the traditional high voltage switch cabinet, due to the lack of effective locking mechanism, the valve link is easily affected by various factors and misoperation occurs. For example, the mechanical vibration generated during equipment operation may cause the connecting rod to loosen, and then cause its position to deviate; when the operator is performing routine maintenance or emergency operation, accidental movement of the connecting rod may also be caused by accidental touch or non-standard operation process. These misoperation conditions not only cause damage to the electrical components inside the high voltage switch cabinet, but also may cause power accidents, endanger the safety of the operator, and bring great risks to the stable operation of the power system.

[0003] The valve link of the existing high voltage switch cabinet usually adopts a mechanical locking mode to prevent misoperation, but these locking modes have certain limitations: in the long-term operation process of the high voltage switch cabinet, due to factors such as mechanical vibration and temperature change, the traditional mechanical locking mode may be unstable; some existing locking devices are complex to operate and require multiple steps to complete locking or unlocking, which not only increases the operation time, but also increases the possibility of operation errors; the structure of some locking devices is complex, making maintenance and repair difficult, which affects the maintenance efficiency and operation reliability of the switch cabinet. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a valve link operation anti-misoperation locking device for high voltage switch cabinet, which can solve the problem of misoperation of the valve link in the operation process of the prior art, and improve the safety and reliability of the high voltage switch cabinet.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A valve link operation anti-misoperation locking device for high voltage switch cabinet is used for installation on the valve link, comprising a limiting body and a magnetic attraction assembly, the limiting body is provided with an incomplete closed upper extension connecting arm and a lower extension connecting arm at both ends respectively, the upper extension connecting arm and the lower extension connecting arm are respectively sleeved on the outer periphery of the pin shaft for limiting the relative rotation of the pin shaft, and then limiting the action of the valve link;

[0007] The magnetic attraction assembly is fixedly arranged on the inner side of the limiting body and is used for adsorbing and fixing the valve link.

[0008] As a further implementation manner, the limiting body is internally fixed with a mounting seat, and the mounting seat is fixedly connected with the magnetic assembly.

[0009] As a further implementation manner, the mounting seat is welded with the limiting body.

[0010] As a further implementation manner, a through hole is formed in the mounting seat, and the magnetic assembly comprises a magnet and a screw, and the magnet is fixedly connected with the mounting seat through the screw and the through hole.

[0011] As a further implementation manner, the upper extending connecting arm and the lower extending connecting arm are symmetrically arranged, and the side surface of the upper extending connecting arm and the lower extending connecting arm is an opening penetrating through, so as to be sleeved on the two pin shafts of the valve link, thereby limiting the rotation of the two valve links, preventing the safety accident caused by the movement of the baffle of the high-voltage switch cabinet due to the mis-touch or mis-operation, and improving the safety of the power system.

[0012] As a further implementation manner, the upper extending connecting arm and the lower extending connecting arm are respectively welded with the limiting body; preferably, a spot welding process is adopted.

[0013] As a further implementation manner, the screw is a cross slot countersunk screw, which is convenient for mounting and dismounting and does not hinder the adsorption and fixation of the magnet and the pin shaft on the valve link.

[0014] As a further implementation manner, the limiting body is made of an aluminum-zinc coated plate.

[0015] By adopting the above technical scheme, the utility model has the following beneficial effects:

[0016] 1. The extending connecting arms at the two ends of the limiting body are sleeved outside the pin shafts of the valve link, and the valve link is adsorbed and fixed through the magnetic assembly, so that the magnetic adsorption effect is combined with the mechanical locking, double fixing forces are provided, the movement of the valve link is effectively limited, the safety accident caused by the movement of the baffle of the high-voltage switch cabinet due to the mis-touch or mis-operation is prevented, and the safety of the power system is improved; at the same time, the stability of the valve link in the locking state is significantly improved, the mis-operation caused by vibration or accidental impact is reduced, and the safety and reliability in the operation process of the high-voltage switch cabinet are effectively improved.

[0017] 2. When the valve link pin shafts pass through the extending connecting arms and are magnetically adsorbed and fixed, the movement of the valve link caused by mis-operation or accidental situation can be avoided, the mis-operation of the valve link is effectively prevented, the risk of the electric power accident caused by the accidental movement of the valve link is greatly reduced, the personal safety of the operator and the integrity of the electrical elements in the high-voltage switch cabinet are effectively ensured, and strong support is provided for the safe and stable operation of the power system.

[0018] 3、The utility model simplifies installation and dismounting process, make operation more convenient, reduce operation time, also reduce possible error or risk in operation process.

[0019] 4、The utility model structure is compact, can keep high stability in long -term operation process, reduce equipment failure caused by reasons such as part loosening, abrasion, improve the overall reliability and service life of high voltage switchgear, greatly reduce equipment maintenance cost and downtime. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which form a part of this detailed description, are used to provide further understanding of the present application, and the illustrative embodiments of the present application and its description serve the purpose of explaining the present application. They must not be used to limit the present application unduly.

[0021] Figure 1 It is a three-dimensional structure schematic view when the utility model embodiment does not install magnetic attraction component;

[0022] Figure 2 It is a structure front view when the utility model embodiment does not install magnetic attraction component;

[0023] Figure 3 It is a structure left view when the utility model embodiment does not install magnetic attraction component;

[0024] Figure 4 It is a structure front view of the utility model embodiment;

[0025] Figure 5 It is a structure left view of the utility model embodiment.

[0026] In the drawing: 1, limit body;2, upper extension connecting arm;3, lower extension connecting arm;4, mounting seat;5, through hole;6, cross slot countersunk screw;7, magnet. DETAILED DESCRIPTION

[0027] The utility model will be further described below in combination with the drawings and embodiments.

[0028] It should be noted that the following detailed description is exemplary, and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] Example 1

[0032] In one typical embodiment of this application, a locking device to prevent accidental contact during operation of a valve linkage in a high-voltage switchgear is provided, which is installed at the pin of the valve linkage, such as... Figures 1-5 As shown, it includes a limiting body 1 and a magnetic suction assembly. The limiting body 1 has an upper extension connecting arm 2 and a lower extension connecting arm 3 that are not completely closed at both ends. The upper extension connecting arm 2 and the lower extension connecting arm 3 are respectively sleeved around a pin to limit the relative rotation of the pin, thereby preventing the valve linkage from moving.

[0033] The magnetic suction component is fixedly installed inside the limiting body 1 and is used to be attracted and fixed to the valve connecting rod.

[0034] Specifically, such as Figure 1 As shown, the anti-misoperation interlocking device for the valve linkage in this embodiment includes a central limiting body 1 and upper extension connecting arms 2 and lower extension connecting arms 3 located on the upper and lower sides of the limiting body. The upper and lower pins of the high-voltage switchgear valve linkage pass through the two extension connecting arms to form a limit. At the same time, a magnetic suction assembly is fixedly installed on the inner side of the middle part of the limiting body 1. The magnetic suction assembly can be attracted and connected to the outer side of the valve linkage for fixation, so that the upper and lower extension connecting arms are stably sleeved on the outside of the pins. At this time, the rotation path of the pins is blocked by the top of the limiting body and the upper extension connecting arm, and the valve linkage cannot move. This avoids the risk of the contact baffle opening due to misoperation or accidental situation, causing high-voltage arc electric shock, and effectively improves the safety of power system operation.

[0035] Specifically, such as Figures 2-3 As shown, the upper extension connecting arm 2 and the lower extension connecting arm 3 are symmetrically arranged on the upper and lower sides of the limiting body 1. The sides of both the upper extension connecting arm 2 and the lower extension connecting arm 3 are through openings, facilitating the passage of the valve linkage pins to fit the locking device onto the two pins of the valve linkage. In this embodiment, combined with... Figure 1 , 2As shown, the top of the limiting body 1 forms an upper accommodating cavity with the upper extending connecting arm 2, the bottom of the limiting body 1 forms a lower accommodating cavity with the lower extending connecting arm 3, the fixed pin shaft of the valve connecting rod passes through the lower accommodating cavity, the movable pin shaft passes through the upper accommodating cavity, and is fixed at a certain position under the magnetic attraction of the magnetic assembly and the side of the valve connecting rod, so as to limit the rotating action of the valve connecting rod by limiting the rotation of the movable pin shaft, and further prevent the end of the valve connecting rod from moving up and down on the baffle of the high-voltage switch cabinet, so as to avoid damage to the electrical elements inside the high-voltage switch cabinet or power accidents, greatly improve the safety of the high-voltage switch cabinet during operation, and reduce power safety accidents.

[0036] In the embodiment, the upper extending connecting arm 2 and the lower extending connecting arm 3 are respectively welded and fixed with the limiting body 1 by electric welding process.

[0037] Specifically, as shown in the drawings, Figure 1 A mounting seat 4 is fixedly arranged in the middle of the limiting body 1, and the magnetic assembly is fixedly arranged in the inner side of the mounting seat 4, so as to be adsorbed and fixed with the valve connecting rod. In the embodiment, the mounting seat 4 is a square hollow block with an open side, one side of the mounting seat 4 is welded and connected with the limiting body 1 by electric welding process, and a through hole is formed in the end face of the mounting seat 4 to be connected with the magnetic assembly. In the embodiment, in combination with Figures 4-5 As shown, the magnetic assembly includes a magnet 7 and a cross slot countersunk screw 6, the magnet 7 is a cylindrical magnet with a counterbore, and the cross slot countersunk screw 6 passes through the magnet 7 and the through hole 5 on the mounting seat to realize fixed connection, so as to fix the magnet 7 on the outer side of the mounting seat 4 in the limiting body, so that when the mounting body is close to the valve connecting rod, the magnet can be adsorbed and fixed on the outer side of the valve connecting rod, so as to install the locking device on the valve connecting rod to limit the rotation of the valve connecting rod, ensure the stable operation of the power system, and reduce the risk of accidents.

[0038] In the embodiment, the screw is a cross slot countersunk screw, which is convenient for installation and disassembly, and is convenient for adsorbed and fixed with the outer end face of the magnet and the outer side of the valve connecting rod, and improves the stability of the magnetic connection.

[0039] In the embodiment, the limiting body is made of aluminum-zinc coated plate, which has good corrosion resistance and can form a good protective layer on the section.

[0040] In addition, the overall structure of the locking device of the embodiment is subjected to pickling, phosphating and plastic spraying treatment to improve the corrosion resistance and adapt to the harsh working environment of the high-voltage switch cabinet.

[0041] The embodiment has simple structure, and when used, the upper and lower extension connecting arms are respectively sleeved on the pin shafts and the magnets are fixedly connected with the valve link by magnetic adsorption, so that the installation of the locking device is completed; and the locking device is convenient to disassemble, and when needed, the locking device can be quickly disassembled and replaced, so that the convenience of maintenance and overhaul is greatly improved. After the locking device is installed on the valve link of the high-voltage switch cabinet, by adjusting the position of the magnet and the size of the magnet, it can be ensured that the cooperation of the locking device and the valve link reaches the best state. The performance of the installed locking device is tested, including stability test, durability test and safety test, so that it can be ensured that the locking device meets the operation requirements of the high-voltage switch cabinet.

[0042] The working principle of the embodiment is that when the operator is performing daily maintenance or emergency operation, the two pin shafts on the valve link pass through the upper extension connecting arm 2 and the lower extension connecting arm 3 respectively, the magnetic attraction assembly and the valve link realize magnetic attraction, and the limiting body and the valve link are combined together. One locking device of the embodiment is installed on the valve link on the left and right sides of the contact baffle, at this time, the rotation path of the upper movable pin shaft is blocked by the top of the limiting body 1 and the upper extension connecting arm 2, the valve link cannot be actuated, and the contact baffle cannot be moved, which can avoid the risk that the contact baffle is opened due to the action of the valve link caused by misoperation or unexpected situation when the personnel are working in the middle door, so as to ensure the operation specification of the staff and reduce the occurrence of accidents.

[0043] In the embodiment, the locking device is fixed by magnetic attraction, and when used, the limiting body can be easily combined with the valve link, and after use, the locking device can be easily removed, so that the locking device is convenient to install and disassemble, and the device is simple and reliable, small in size, low in cost and high in efficiency.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them, and those skilled in the art should understand that the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A false touch prevention locking device for operating a high-voltage switch cabinet, for installation on a door link, characterized in that, Including the limit body and the magnetic attraction component, the limit body two ends are equipped with the upper extension connecting arm and the lower extension connecting arm respectively, the upper extension connecting arm and the lower extension connecting arm are respectively set in the pin shaft outer periphery for limiting the relative rotation of pin shaft, in turn limit the valve link action; The magnetic attraction component is fixedly arranged in the limit body inside, is used for with valve link adsorption fixed.

2. The anti-misoperation locking device for the operating rod of the valve of the high-voltage switch cabinet according to claim 1, characterized in that, The limit body inside is fixedly provided with the mounting seat, and the mounting seat is fixedly connected with the magnetic attraction component.

3. The anti-misoperation locking device for the operating rod of the valve of the high-voltage switch cabinet according to claim 2, characterized in that, The mounting seat is welded with the limit body.

4. The anti-misoperation locking device for the operating rod of the valve of the high-voltage switch cabinet according to claim 2, characterized in that, The mounting seat is provided with a through hole, the magnetic attraction component includes a magnet and a screw, the magnet is fixedly connected with the mounting seat through the screw and the through hole.

5. The anti-misoperation locking device for the operating rod of the valve of the high-voltage switch cabinet according to claim 1, characterized in that, The upper extension connecting arm and the lower extension connecting arm are symmetrically arranged, the side of the upper extension connecting arm and the lower extension connecting arm is the through opening, is used for setting on the two pin shafts of valve link.

6. The anti-misoperation locking device for the operating rod of the valve of the high-voltage switch cabinet according to claim 1, characterized in that, The upper extension connecting arm and the lower extension connecting arm are respectively welded with the limit body.

7. The anti-misoperation locking device for the operating rod of the valve of the high voltage switch cabinet according to claim 4, characterized in that, The screw adopts the cross slot countersunk screw.

8. The anti-misoperation locking device for the operating rod of the valve of the high-voltage switch cabinet according to claim 1, characterized in that, The limit body is made of aluminum zinc plate.

Images