Adjustable pole-mounted vacuum circuit breaker arc extinguish chamber structure

Abstract

The utility model discloses an adjustable pole-mounted vacuum circuit breaker arc extinguish chamber structure, which comprises an insulating shell, an upper insulating end cover is fixed at the upper end of the insulating shell, a fixed conducting rod extending into the insulating shell is arranged on the upper insulating end cover, and an up-down adjusting mechanism used for driving the fixed conducting rod to move up and down is mounted on the upper insulating end cover. A first contact is fixed to the bottom of the fixed conducting rod, a lower insulating end cover is fixed to the lower end of the insulating shell, a stainless steel corrugated pipe is fixed to the upper side of the lower insulating end cover, a movable conducting rod penetrating through the stainless steel corrugated pipe is installed on the lower insulating end cover, and the movable conducting rod is in sliding contact with the lower insulating end cover and the stainless steel corrugated pipe. An opening and closing mechanism used for driving the movable conducting rod to move up and down is installed on the lower insulating end cover, and a second contact is fixed to the upper end of the movable conducting rod. The contact is convenient to adjust, and the position of the contact is convenient to adjust according to use requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum circuit breakers, in particular to an adjustable arc extinguishing chamber structure of a column mounted vacuum circuit breaker. Background Art

[0002] The pole-mounted vacuum circuit breaker is named because its arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; it has the advantages of small size, light weight, and suitable for frequent operation, and is widely used in distribution networks.

[0003] The arc extinguishing chamber is a key component of the "arc extinguishing" of the pole-mounted vacuum circuit breaker. The arc extinguishing chamber is mainly composed of an insulating shell, a fixed contact, a moving contact, etc. The position of the fixed contact is fixed and the moving contact can be moved. When the fixed contact and the moving contact are in contact, power can be turned on, and when the fixed contact and the moving contact are separated, power is turned off. During use, the arc extinguishing effect will deteriorate due to the wear of the contacts and the aging of the insulating components. At this time, it is necessary to adjust the fixed contact, so as to adjust the maximum distance between the fixed contact and the moving contact to adjust the arc extinguishing effect. However, the fixed contact of the existing arc extinguishing chamber is fixedly installed and difficult to adjust. Therefore, in view of the above situation, it is urgent to develop an adjustable arc extinguishing chamber structure for a pole-mounted vacuum circuit breaker that is easy to adjust and convenient to adjust the position of the contact according to the use requirements, so as to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0004] The utility model aims to provide an adjustable arc extinguishing chamber structure of a pole-mounted vacuum circuit breaker to solve the problems raised in the above-mentioned background technology.

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

[0006] An adjustable arc extinguishing chamber structure of a column-mounted vacuum circuit breaker, comprising an insulating shell, an upper insulating end cover, a fixed conductive rod, an upper and lower adjustment mechanism, a lower insulating end cover, a movable conductive rod, an opening and closing mechanism and a stainless steel bellows, wherein the upper end of the insulating shell is fixed with an upper insulating end cover, the upper insulating end cover is provided with a fixed conductive rod extending into the insulating shell, the upper insulating end cover is provided with an upper and lower adjustment mechanism for driving the fixed conductive rod to move up and down, a first contact is fixed to the bottom of the fixed conductive rod, a lower insulating end cover is fixed to the lower end of the insulating shell, a stainless steel bellows is fixed to the upper side of the lower insulating end cover, and a stainless steel bellows penetrating the stainless steel bellows is provided on the lower insulating end cover. The movable conductive rod of the corrugated tube is in sliding contact with the lower insulating end cover and the stainless steel corrugated tube respectively. The lower insulating end cover is equipped with an opening and closing mechanism for driving the movable conductive rod to move up and down. A second contact is fixed to the upper end of the movable conductive rod. The upper and lower adjustment mechanism comprises: a threaded sleeve, a rotating handle, a ring and a limiting guide rod. The threaded sleeve is rotatably connected to the upper insulating end cover. A rotating handle is fixed on the outer side of the threaded sleeve. The fixed conductive rod is provided with an external thread matching the threaded sleeve. The ring is fixed on the fixed conductive rod. A limiting guide rod penetrating the upper insulating end cover is fixed on the ring. The limiting guide rod is in sliding contact with the upper insulating end cover.

[0007] Preferably: the opening and closing mechanism includes: a disc, a permanent magnet, an electromagnet and a spring, the disc is fixed to the moving conductive rod, two permanent magnets are fixed on the upper side of the disc, an electromagnet is arranged on the upper side of each permanent magnet, the electromagnet is fixed to the lower insulating end cover, and a plurality of springs connected to the lower insulating end cover are installed on the disc.

[0008] Preferably, the opposite magnetic poles of the permanent magnet and the electromagnet are arranged opposite to each other.

[0009] Preferably, the threaded sleeve, the rotating handle, the circular ring, the limiting guide rod and the circular disc are all made of insulating materials.

[0010] The beneficial effects of the utility model are as follows: the adjustable column-mounted vacuum circuit breaker arc extinguishing chamber structure, when the power is off, drives the movable conductive rod downward through the opening and closing mechanism, so that the second contact is separated from the first contact; when the power is on, drives the movable conductive rod upward through the opening and closing mechanism, so that the second contact and the first contact are attached together; when the fire extinguishing effect is not good, the rotating handle drives the threaded sleeve to rotate, and the threaded sleeve drives the fixed conductive rod to move up and down through the rotation of the threaded sleeve, and drives the first contact to move up and down through the fixed conductive rod, so as to adjust the maximum spacing between the first contact and the second contact. In summary, the utility model is easy to adjust and is convenient for adjusting the position of the contact according to the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0012] Figure 2 It is an internal sectional view of the present utility model.

[0013] Figure 3 It is a partial structure diagram of the utility model Figure 1 .

[0014] Figure 4 It is a partial structure diagram of the utility model Figure 2 .

[0015] Legend:

[0016] 1. Insulating shell; 2. Upper insulating end cover; 3. Fixed conductive rod; 301. External thread; 302. First contact; 4. Up and down adjustment mechanism; 401. Threaded sleeve; 402. Rotating handle; 403. Ring; 404. Limiting guide rod; 5. Lower insulating end cover; 6. Moving conductive rod; 601. Second contact; 7. Opening and closing mechanism; 701. Disc; 702. Permanent magnet; 703. Electromagnet; 704. Spring; 8. Stainless steel bellows. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Specific examples are given below.

[0019] See also Figure 1~Figure 4In the embodiment of the utility model, an adjustable column-mounted vacuum circuit breaker arc extinguishing chamber structure includes an insulating shell 1, an upper insulating end cover 2, a fixed conductive rod 3, an up-and-down adjustment mechanism 4, a lower insulating end cover 5, a movable conductive rod 6, an opening and closing mechanism 7 and a stainless steel bellows 8, wherein the upper end of the insulating shell 1 is fixed with an upper insulating end cover 2, the upper insulating end cover 2 is provided with a fixed conductive rod 3 extending into the insulating shell 1, the upper insulating end cover 2 is provided with an up-and-down adjustment mechanism 4 for driving the fixed conductive rod 3 to move up and down, the bottom of the fixed conductive rod 3 is fixed with a first contact 302, the lower end of the insulating shell 1 is fixed with a lower insulating end cover 5, the lower insulating A stainless steel bellows 8 is fixed to the upper side of the edge end cover 5, and a moving conductive rod 6 penetrating the stainless steel bellows 8 is installed on the lower insulating end cover 5. The moving conductive rod 6 is in sliding contact with the lower insulating end cover 5 and the stainless steel bellows 8 respectively. An opening and closing mechanism 7 for driving the moving conductive rod 6 to move up and down is installed on the lower insulating end cover 5. A second contact 601 is fixed to the upper end of the moving conductive rod 6. When the power is off, the moving conductive rod 6 is driven downward by the opening and closing mechanism 7, so that the second contact 601 is separated from the first contact 302. When the power is on, the moving conductive rod 6 is driven upward by the opening and closing mechanism 7, so that the second contact 601 is attached to the first contact 302.

[0020] The up and down adjustment mechanism 4 includes: a threaded sleeve 401, a rotating handle 402, a ring 403 and a limiting guide rod 404. The threaded sleeve 401 is rotatably connected to the upper insulating end cover 2. The rotating handle 402 is fixed on the outer side of the threaded sleeve 401. The fixed conductive rod 3 is provided with an external thread 301 that matches the threaded sleeve 401. The ring 403 is fixed on the fixed conductive rod 3. The limiting guide rod 404 that penetrates the upper insulating end cover 2 is fixed on the ring 403. The limiting guide rod 404 is in sliding contact with the upper insulating end cover 2. When in use, the rotating handle 402 is rotated to drive the threaded sleeve 401 to rotate, and the fixed conductive rod 3 is driven to move up and down through the rotation of the threaded sleeve 401. The first contact 302 is driven to move up and down through the fixed conductive rod 3, thereby adjusting the position of the first contact 302.

[0021] The opening and closing mechanism 7 includes: a disc 701, a permanent magnet 702, an electromagnet 703 and a spring 704. The disc 701 is fixed to the moving conductive rod 6. Two permanent magnets 702 are fixed on the upper side of the disc 701. An electromagnet 703 is arranged on the upper side of each of the permanent magnets 702. The electromagnet 703 is fixed to the lower insulating end cover 5. A plurality of springs 704 connected to the lower insulating end cover 5 are installed on the disc 701. The opposite magnetic poles of the permanent magnet 702 and the electromagnet 703 are arranged oppositely. When the electromagnet 703 is started, the electromagnet 703 sucks the permanent magnet 702 upward, drives the disc 701 to move upward through the permanent magnet 702, and drives the moving conductive rod 6 to move upward through the disc 701. When the electromagnet 703 is closed, the disc 701 and the moving conductive rod 6 move back downward.

[0022] The threaded sleeve 401 , the rotating handle 402 , the circular ring 403 , the limiting guide rod 404 and the circular disc 701 are all made of insulating materials.

[0023] Working principle: The adjustable pole-mounted vacuum circuit breaker arc extinguishing chamber structure, when the power is off, the opening and closing mechanism 7 drives the movable conductive rod 6 to move downward, so that the second contact 601 is separated from the first contact 302; when the power is on, the opening and closing mechanism 7 drives the movable conductive rod 6 to move upward, so that the second contact 601 and the first contact 302 are attached together; when encountering a situation where the arc extinguishing effect is not good, the rotating handle 402 is rotated to drive the threaded sleeve 401 to rotate, and the rotation of the threaded sleeve 401 drives the fixed conductive rod 3 to move up and down, and the fixed conductive rod 3 drives the first contact 302 to move up and down, thereby adjusting the maximum distance between the first contact 302 and the second contact 601.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adjustable arc extinguishing chamber structure of a column mounted vacuum circuit breaker, characterized in that: The invention comprises an insulating shell (1), an upper insulating end cover (2), a fixed conductive rod (3), an up-down adjustment mechanism (4), a lower insulating end cover (5), a movable conductive rod (6), an opening and closing mechanism (7) and a stainless steel bellows (8), wherein the upper end of the insulating shell (1) is fixed with the upper insulating end cover (2), the upper insulating end cover (2) is provided with a fixed conductive rod (3) extending into the insulating shell (1), the upper insulating end cover (2) is provided with an up-down adjustment mechanism (4) for driving the fixed conductive rod (3) to move up and down, a first contact (302) is fixed at the bottom of the fixed conductive rod (3), the lower end of the insulating shell (1) is fixed with the lower insulating end cover (5), the upper side of the lower insulating end cover (5) is fixed with the stainless steel bellows (8), the lower insulating end cover (5) is provided with a movable conductive rod (6) penetrating the stainless steel bellows (8), and the movable conductive rod (6) is respectively connected to the lower insulating end cover ( 5) and a stainless steel bellows (8), an opening and closing mechanism (7) for driving a moving conductive rod (6) to move up and down is installed on the lower insulating end cover (5), a second contact (601) is fixed to the upper end of the moving conductive rod (6), and the up and down adjustment mechanism (4) comprises: a threaded sleeve (401), a rotating handle (402), a ring (403) and a limiting guide rod (404), the threaded sleeve (401) is rotatably connected to the upper insulating end cover (2), a rotating handle (402) is fixed to the outer side of the threaded sleeve (401), an external thread (301) matching the threaded sleeve (401) is provided on the fixed conductive rod (3), the ring (403) is fixed to the fixed conductive rod (3), a limiting guide rod (404) penetrating the upper insulating end cover (2) is fixed on the ring (403), and the limiting guide rod (404) is in sliding contact with the upper insulating end cover (2).

2. The adjustable arc extinguishing chamber structure of a column mounted vacuum circuit breaker according to claim 1, characterized in that: The opening and closing mechanism (7) comprises: a disk (701), a permanent magnet (702), an electromagnet (703) and a spring (704); the disk (701) is fixed to the moving conductive rod (6); two permanent magnets (702) are fixed to the upper side of the disk (701); an electromagnet (703) is arranged on the upper side of each permanent magnet (702); the electromagnet (703) is fixed to the lower insulating end cover (5); and a plurality of springs (704) connected to the lower insulating end cover (5) are mounted on the disk (701).

3. The adjustable arc extinguishing chamber structure of a column mounted vacuum circuit breaker according to claim 2, characterized in that: The opposite magnetic poles of the permanent magnet (702) and the electromagnet (703) are arranged opposite to each other.

4. The adjustable arc extinguishing chamber structure of a column mounted vacuum circuit breaker according to claim 2, characterized in that: The threaded sleeve (401), the rotating handle (402), the circular ring (403), the limiting guide rod (404) and the circular disc (701) are all made of insulating materials.

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