CN219105941U

CN219105941U - Arc grounding conversion metal grounding conversion device

Info

Publication number: CN219105941U
Application number: CN202223270601.3U
Authority: CN
Inventors: 刘俊; 陈保香; 吴伟丽; 刘勇; 杜京义; 李磊; 刘青; 王亮; 奚涛; 钱程; 李昌龙; 刘俊杰
Original assignee: Anhui Zgd Electric Power Technology Co ltd
Current assignee: Anhui Zgd Electric Power Technology Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-05-30
Anticipated expiration: 2032-12-07

Abstract

The utility model belongs to the technical field of power equipment, and discloses a conversion device for converting arc light grounding into metal grounding, which comprises a shell, wherein a fixed contact is arranged in the shell, a moving contact is arranged at the bottom of the fixed contact, a corrugated pipe is sleeved at the bottom end of the moving contact, a moving conducting rod is arranged at the bottom end of the moving conducting rod, an insulating pull rod is arranged at the bottom end of the insulating pull rod, a belleville spring is arranged at the bottom end of the insulating pull rod, a response mechanism is arranged at the bottom of the belleville spring, a buffer device is arranged at the bottom of the response mechanism at intervals, a lifting mechanism is arranged at the bottom of the response mechanism, an installation shell is transversely spliced on the surface of the shell, and the response mechanism and the belleville spring are both arranged in the installation shell; the utility model can adjust the distance between the movable contact and the fixed contact, ensure the efficiency of the subsequent grounding conversion, and can replace the belleville spring through the mounting shell, thereby being more convenient to replace.

Description

Arc grounding conversion metal grounding conversion device

Technical Field

The utility model belongs to the technical field of power equipment, and particularly relates to a conversion device for converting arc light grounding into metal grounding.

Background

In the event of a single-phase earth fault, the switch is required to convert the arc earth fault to a stable metallic earth in as short a time as possible. The traditional mechanical switch has strong load capacity and stable conduction, but has slow response speed, generally about 50ms, and can not meet the requirement of quick action of the switch; the power electronic switch has high response speed, but has overlarge on-state loss and low pressure resistance. Therefore, the rapid switching arc suppression device generally adopts an improved rapid switch based on an electromagnetic repulsion mechanism, can realize 7ms internal switching, 3ms internal switching and 40kA of switching-off current, and can meet the requirements of rapid switching-off and rapid switching-off of short-circuit current in the event of two-phase grounding faults.

The quick switching type arc extinction device in the prior art mainly comprises a vacuum arc extinction chamber, a movable conducting rod, an opening and closing coil, a metal disc and the like. The operating mechanism of the moving contact in the arc extinguishing chamber is driven by an electromagnetic repulsion mechanism. The working principle of the electromagnetic repulsion mechanism is as follows: when the switch receives a closing (or opening) command, pulse current which lasts for a few milliseconds is generated in the opening (or closing) coil, the exciting coil generates an alternating magnetic field under the action of the pulse current, and meanwhile, the metal disc generates electromagnetic force due to eddy current induction. The metal disc is rapidly moved under the action of Lorentz repulsion force and drives the moving contact of the vacuum arc-extinguishing chamber to act through the connecting rod, so that rapid opening and closing of a rapid vacuum switch branch is realized, but after the rapid vacuum switch branch is used for a period of time, the belleville spring is gradually flattened due to long-time force application, so that the distance between the top end and the bottom end of the belleville spring is reduced, the top of the moving contact is caused to move downwards, the distance between the moving contact and the fixed contact is increased, the corresponding speed is increased, and the conversion efficiency is influenced.

Therefore, it is necessary to invent a switching device for switching the arc ground to the metal ground to solve the above-mentioned problems.

Disclosure of Invention

The utility model provides a conversion device for converting arc light grounding into metal grounding, which is convenient for adjusting the distance between a moving contact and a fixed contact so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a conversion equipment of arc light ground connection conversion metal ground connection, includes the casing, the inside static contact that is provided with of casing, the static contact bottom is provided with the moving contact, the bellows has been cup jointed to the moving contact bottom, and the moving contact bottom is provided with the movable conducting rod, the movable conducting rod bottom is provided with insulating pull rod, and insulating pull rod bottom is provided with the belleville spring, and the belleville spring bottom is provided with response mechanism, and response mechanism bottom interval is provided with buffer, response mechanism bottom is provided with elevating system, the horizontal grafting of casing surface has the installation shell, and response mechanism and belleville spring all set up inside the installation shell.

Preferably, the response mechanism comprises a metal disc, a closing coil is arranged at the top of the metal disc, and a separating coil is arranged at the bottom of the metal disc.

Preferably, the lifting mechanism comprises a square column, the square column is inserted and connected at the bottom of the installation shell, the top of the square column is inserted and connected with a supporting table, the bottom of the supporting table is provided with a lifting table, one surface of the lifting table, which is in contact with the supporting table, is an inclined surface, the height of the bottom surface of the supporting table is between the highest point and the lowest point of the inclined surface, one side of the lifting table is fixedly connected with an operating rod, the operating rod penetrates through the square column, the outer side of the operating rod is sleeved with a thrust spring which is used for fixing the lifting table and the side wall of the square column, the thrust spring is in a recovery compression state, the upper surface of one end of the operating rod, which is positioned at the outer side of the square column, is downwards sunken to form a groove, a baffle is arranged in the groove, and the side surface of the baffle is attached to the side surface of the square column.

Preferably, the joint of baffle and square post is provided with T type piece, and T type piece horizontal sliding fit's T type groove has been seted up to the side of square post.

Preferably, the outer edge of the bottom end of the corrugated pipe is bonded on the inner wall of the shell, and the inner edge of the top end of the corrugated pipe is bonded with the movable contact.

Preferably, sealing plugs are inserted into two ends of the mounting shell, and the sealing plugs are made of silicon rubber.

Preferably, the top end of the supporting table is provided with a limiting column, and the limiting column is inserted into the bottom end of the brake separating coil.

The utility model has the technical effects and advantages that:

1. the utility model can adjust the distance between the movable contact and the fixed contact, and ensure the efficiency of the subsequent grounding conversion;

2. the butterfly spring can be replaced through the mounting shell, and the replacement is more convenient.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the location of all structures within the housing of the present utility model;

fig. 3 is a schematic view of the overall structure of the lifting mechanism in the utility model.

In the figure: the device comprises a shell 1, a fixed contact 2, a movable contact 3, a corrugated pipe 4, a movable conducting rod 5, an insulating pull rod 6, a butterfly spring 7, a response mechanism 8, a metal disc 81, a closing coil 82, a separating coil 83, a lifting mechanism 9, a square column 91, a supporting table 92, a lifting table 93, an operating rod 94, a thrust spring 95, a baffle 96, a buffer device 10, a mounting shell 11, a T-shaped block 12, a sealing plug 13 and a limiting column 14.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments of the utility model, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the utility model;

in the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, in the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The utility model provides a conversion device for converting arc light to ground into metal to ground, which is shown in fig. 1-3, and comprises a shell 1, wherein a static contact 2 is arranged in the shell 1, a moving contact 3 is arranged at the bottom of the static contact 2, a corrugated pipe 4 is sleeved at the bottom end of the moving contact 3, the outer edge of the bottom end of the corrugated pipe 4 is adhered to the inner wall of the shell 1, the inner edge of the top end of the corrugated pipe 4 is adhered to the moving contact 3, when a belleville spring 7 is replaced, the moving contact 3 can be suspended and fixed through the corrugated pipe 4, a movable conducting rod 5 is arranged at the bottom end of the moving contact 3, an insulating pull rod 6 is arranged at the bottom end of the movable conducting rod 5, a belleville spring 7 is arranged at the bottom of the insulating pull rod 6, a response mechanism 8 is arranged at the bottom of the belleville spring 7, the response mechanism 8 comprises a metal disc 81, a closing coil 82 is arranged at the top of the metal disc 81, a switching coil 83 is arranged at the bottom, when a switching-on (or switching-off) command is received, pulse current which lasts for a few milliseconds is generated in the switching-off coil (or switching-on coil 83), an eddy current is generated under the pulse current, a rapid induction mechanism is generated under the pulse current, a magnetic field, a vibration force is generated by the electromagnetic force, a coil 8 is rapidly generates a coil 8, a vibration mechanism is arranged at the bottom of the metal disc is provided with a coil 8, a horizontal shell is arranged at the bottom, a buffer mechanism is arranged at the bottom, a buffer shell, and a side, a buffer mechanism is arranged at the metal shell is, and is provided with a side, and is provided with a buffer device, and has a side, and is provided with a device, and has a device, and is provided.

Referring to fig. 1-3 of the specification, the lifting mechanism 9 includes a square column 91, the square column 91 is inserted into the bottom of the installation shell 11, a supporting table 92 is inserted into the top of the square column 91, a lifting table 93 is disposed at the bottom of the supporting table 92, one surface of the lifting table 93, which contacts with the supporting table 92, is an inclined surface, the bottom surface of the supporting table 92 is higher than the highest point and the lowest point of the inclined surface, an operating rod 94 is fixedly connected to one side of the lifting table 93, the operating rod 94 penetrates through the square column 91, a thrust spring 95 for fixing the lifting table 93 and the side wall of the square column 91 is sleeved outside the operating rod 94, the thrust spring 95 is in a restoring compression state, the upper surface of one end of the operating rod 94, which is located outside the square column 91, is recessed downwards to form a groove, a baffle 96 is disposed inside the groove, and the side of the baffle 96 is attached to the side of the square column 91.

Referring to fig. 3 of the specification, a T-shaped block 12 is disposed at the joint of the baffle 96 and the square column 91, a T-shaped groove is formed in the side surface of the square column 91 and is in sliding fit with the T-shaped block 12 transversely, when the distance between the moving contact 3 and the fixed contact 2 needs to be adjusted, the baffle 96 is pushed only, the baffle 96 drives the T-shaped block 12 to move in the T-shaped groove, the baffle 96 is separated from the operating rod 94, the T-shaped block 12 is always in the T-shaped groove, and the baffle 96 is not easy to lose.

Referring to fig. 1 of the specification, two ends of the installation shell 11 are respectively inserted with a sealing plug 13, the sealing plugs 13 are made of silicon rubber, and the sealing plugs 13 can seal the installation shell 11 to prevent sundries from entering the installation shell 11.

Referring to fig. 2-3 of the specification, the top end of the supporting table 92 is provided with a limiting post 14, the limiting post 14 is inserted into the bottom end of the opening coil 83, and the limiting post 14 can prevent the opening coil 83 from moving at the top of the supporting table 92, so that stability is ensured.

The working principle of the utility model is as follows: when the switch receives a closing (or opening) command, pulse current which lasts for a few milliseconds is generated in an opening (or closing) coil, an alternating magnetic field is generated by a closing coil 82 (or opening coil 83) under the action of the pulse current, meanwhile, an electromagnetic force is generated by a metal disc 81 due to the induction of eddy current, the metal disc 81 rapidly moves under the action of Lorentz repulsion force, and a movable contact 3 acts through a belleville spring 7, an insulating pull rod 6 and a movable conducting rod 5, so that the rapid opening and closing of a rapid vacuum switch branch circuit is realized, and arc grounding is converted into metal grounding;

after the device is used for a period of time, the baffle plate 96 can be taken out of the groove at the top of the operating rod 94, then the lifting table 93 is pushed to transversely move under the restoring action of the thrust spring 95, in the moving process, the inclined surface at the end part of the lifting table 93 can move at the bottom of the supporting table 92, the supporting table 92 is pushed to rise, so that the response mechanism 8 is driven to rise, finally when the bottom of the supporting table 92 reaches the upper surface of the lifting table 93, the response mechanism 8 can be pushed to a proper position, the butterfly spring 7 is driven to rise by the response mechanism 8, finally, the moving contact 3 is enabled to be close to the fixed contact 2 again, the moving contact 3 and the fixed contact 2 are kept within a proper distance, and the efficiency of subsequent conversion is ensured;

and because of the setting of the installation shell 11, when needs change belleville spring 7, only need will respond to mechanism 8 and belleville spring 7 and take out from the one end of installation shell 11, after changing new belleville spring 7, pack into the relevant position of installation shell 11 again can, it is more convenient to change.

Through the setting of hoist mechanism 9, when needs use, only need take out baffle 96 from the recess, under thrust spring 95's restoring effect, promote the horizontal movement of elevating platform 93, through the effect of inclined plane, make brace table 92 rise, finally make moving contact 3 be close to stationary contact 2 again, make moving contact 3 and stationary contact 2 keep in suitable distance, guarantee the efficiency of follow-up ground connection conversion.

Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The utility model provides a conversion equipment of arc light ground connection conversion metal ground connection, includes casing (1), casing (1) inside is provided with static contact (2), static contact (2) bottom is provided with moving contact (3), bellows (4) have been cup jointed to moving contact (3) bottom, and moving contact (3) bottom is provided with movable conducting rod (5), movable conducting rod (5) bottom is provided with insulating pull rod (6), and insulating pull rod (6) bottom is provided with belleville spring (7), and belleville spring (7) bottom is provided with response mechanism (8), and response mechanism (8) bottom interval is provided with buffer (10), its characterized in that: the bottom of the response mechanism (8) is provided with a lifting mechanism (9), the surface of the shell (1) is transversely inserted with a mounting shell (11), and the response mechanism (8) and the belleville spring (7) are arranged inside the mounting shell (11).

2. The arc grounding transition metal grounding transition device of claim 1, wherein: the response mechanism (8) comprises a metal disc (81), a closing coil (82) is arranged at the top of the metal disc (81), and a separating coil (83) is arranged at the bottom of the metal disc.

3. The arc grounding transition metal grounding transition device of claim 1, wherein: lifting mechanism (9) are including square post (91), square post (91) run through and peg graft in installation shell (11) bottom, square post (91) top peg graft have brace table (92), brace table (92) bottom is provided with and promotes platform (93), the one side that promotes platform (93) and brace table (92) contact is the inclined plane, the height of brace table (92) bottom surface is between the highest point and the minimum on inclined plane, promote platform (93) one side fixedly connected with action bars (94), action bars (94) run through square post (91), thrust spring (95) of fixed promotion platform (93) and square post (91) lateral wall have been cup jointed in the action bars (94) outside, thrust spring (95) are in and recover compression state, the upper surface of action bars (94) are located the one end of square post (91) outside undercut and form a recess, the side of baffle (96) is provided with baffle (96) inside the side laminating of baffle (91).

4. A conversion device for arc grounding conversion metal grounding according to claim 3, wherein: t-shaped blocks (12) are arranged at the joint positions of the baffle plates (96) and the square columns (91), and T-shaped grooves transversely matched with the T-shaped blocks (12) in a sliding mode are formed in the side faces of the square columns (91).

5. The arc grounding transition metal grounding transition device of claim 1, wherein: the outer edge of the bottom end of the corrugated pipe (4) is bonded on the inner wall of the shell (1), and the inner edge of the top end of the corrugated pipe (4) is bonded with the moving contact (3).

6. The arc grounding transition metal grounding transition device of claim 1, wherein: sealing plugs (13) are inserted into two ends of the mounting shell (11), and the sealing plugs (13) are made of silicon rubber.

7. A conversion device for arc grounding conversion metal grounding according to claim 3, wherein: the top end of the supporting table (92) is provided with a limiting column (14), and the limiting column (14) is inserted into the bottom end of the brake separating coil (83).