CN214898227U

CN214898227U - Vacuum tube for vacuum circuit breaker

Info

Publication number: CN214898227U
Application number: CN202120830010.3U
Authority: CN
Inventors: 李振东; 季晨光; 孔中伟; 闫红华
Original assignee: Henan Pingzhi Electric Co ltd
Current assignee: Henan Pingzhi Electric Co ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-11-26
Anticipated expiration: 2031-04-22

Abstract

The utility model discloses a vacuum tube for a vacuum circuit breaker, which comprises a ceramic vacuum tube body and a clamping structure; the ceramic vacuum tube comprises a ceramic vacuum tube body, wherein a through hole is formed in the middle of the bottom side of the ceramic vacuum tube body, a sleeve is fixed in the through hole, a movable conducting rod is connected in the sleeve in a sliding mode, a movable contact is fixed at the upper end of the movable conducting rod and located in the ceramic vacuum tube body, an annular block is fixed on the inner side of the upper end of the ceramic vacuum tube body and is of a hollow structure, a fixed conducting rod is clamped in the annular block in a matched mode through a clamping structure, a fixed contact is fixed at the bottom end of the fixed conducting rod, and the fixed contact is in matched contact with the movable contact; the clamping structure comprises a sliding groove, a clamping groove and a clamping block, the sliding groove is formed in the left end and the right end of the inner side of the annular block respectively, the sliding groove is of an L-shaped structure, and the vacuum tube for the vacuum circuit breaker is simple in structure, convenient to install and high in stability.

Description

Vacuum tube for vacuum circuit breaker

Technical Field

The utility model relates to a vacuum circuit breaker technical field specifically is a vacuum tube for vacuum circuit breaker.

Background

The vacuum tube of the existing vacuum circuit breaker at present has the principle that a fixed conducting rod and a movable conducting rod are respectively arranged at two ends of a ceramic shell, the fixed conducting rod and the movable conducting rod are respectively connected with a movable contact and a fixed contact, the two movable contacts and the fixed contact can cut off a power supply and inhibit current through the back-and-forth movement of the movable conducting rod, and the fixed conducting rod is generally connected and fixed with the ceramic shell through glue because the vacuum tube is a high-temperature resistant ceramic shell and is relatively brittle, so the fixed conducting rod is easily damaged in use, and the quality of a product is difficult to guarantee only by the fixation of the glue.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a vacuum tube for vacuum circuit breaker, simple structure, be convenient for installation, stability are high, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a vacuum tube for a vacuum circuit breaker comprises a ceramic vacuum tube body and a clamping structure;

the ceramic vacuum tube comprises a ceramic vacuum tube body, wherein a through hole is formed in the middle of the bottom side of the ceramic vacuum tube body, a sleeve is fixed in the through hole, a movable conducting rod is connected in the sleeve in a sliding mode, a movable contact is fixed at the upper end of the movable conducting rod and located in the ceramic vacuum tube body, an annular block is fixed on the inner side of the upper end of the ceramic vacuum tube body and is of a hollow structure, a fixed conducting rod is clamped in the annular block in a matched mode through a clamping structure, a fixed contact is fixed at the bottom end of the fixed conducting rod, and the fixed contact is in matched contact with the movable contact;

the joint structure includes spout, draw-in groove and fixture block, the spout has been seted up respectively at both ends about the annular piece inboard, the spout is "L" shape structure, the draw-in groove has been seted up respectively to the horizontal end of spout, decide the left and right sides of conducting rod be equipped with respectively with the fixture block of draw-in groove cooperation joint, will decide the middle part that the bottom of conducting rod inserted the annular piece, when pressing down and deciding the conducting rod, guarantee the fixture block along spout downstream, when the fixture block reachd the spout bottom, the conducting rod is decided to anticlockwise rotation to make the fixture block joint in the draw-in groove, it is simpler than the fixed mode structure that has used screw thread or glue now, the operation is more convenient, stability is higher.

Furthermore, the outer side of the fixed conducting rod is provided with a buffer assembly, the buffer assembly comprises a rotating ring, a moving rod, a fixed disk, a compression spring and a contact disk, the upper end side of the fixed conducting rod is rotatably connected with the rotating ring, at least three through grooves are formed in the side surface of the rotating ring and are arranged around the central shaft of the rotating ring in an equidistant array mode, the moving rod is respectively and slidably connected in the through grooves, the fixed disk is respectively fixed at the upper end of the moving rod, the contact disk is respectively arranged at the bottom end of the moving rod and is in matched contact with the upper side of the annular block, the compression spring is respectively sleeved on the side surface of the moving rod, the two ends of the compression spring are fixed at the upper side of the rotating ring and the bottom side of the fixed disk, when the fixed conducting rod and the annular block are installed, the conducting rod moves downwards, and the moving rod is driven to move downwards through the rotating ring, make compression spring shrink at the in-process that the carriage release lever moved down, after the fixture block joint of deciding the conducting rod side in the draw-in groove, because compression spring effect makes the fixture block hug closely in the draw-in groove upside, through setting up buffering subassembly, can prevent effectively that it is not hard up to take place after deciding the conducting rod installation, improved stability.

Furthermore, the lateral surface of the left end of the ceramic vacuum tube body is provided with an exhaust tube, an air inlet of the exhaust tube is communicated with an inner cavity of the ceramic vacuum tube body, a valve is arranged in the middle of the exhaust tube, the exhaust tube is connected with an external exhaust pump, and the control valve is used for conveniently discharging air in the ceramic vacuum tube body after the installation is completed.

Further, decide the middle part outside equidistance of conducting rod and be equipped with and be no less than three sealing washer, the sealing washer cooperates sealing connection with the inboard of annular piece, the upper end of deciding the conducting rod is equipped with insulating handle, through setting up the sealing washer, has guaranteed to install and has accomplished the back and decide the leakproofness between conducting rod and the annular piece, through setting up insulating handle, has improved the security when installing.

Compared with the prior art, the beneficial effects of the utility model are that: the vacuum tube for the vacuum circuit breaker has the following advantages:

1. insert the middle part of annular piece in the bottom that will decide the conducting rod, when pressing down and deciding the conducting rod, guarantee the fixture block along spout downstream, when the fixture block reachd the spout bottom, the conducting rod is decided in anticlockwise rotation to make the fixture block joint in the draw-in groove, more simple, the operation is more convenient, stability is higher than the fixed mode structure that uses screw thread or glue now.

2. When installing deciding conducting rod and annular piece, the conducting rod downstream drives the carriage release lever downstream through the rotating ring, makes compression spring shrink at the in-process of carriage release lever downstream, and after the fixture block joint of deciding the conducting rod side in the draw-in groove, because compression spring effect makes the fixture block hug closely in the draw-in groove upside, through setting up the buffering subassembly, can effectively prevent to take place not hard up after deciding the conducting rod installation completion, improved stability.

3. Be connected through outside aspiration pump and exhaust tube to through control flap, be convenient for accomplish this internal air escape of back ceramic vacuum tube with the installation, through setting up the sealing washer, guaranteed the installation and accomplished the back and decide the leakproofness between conducting rod and the annular piece, through setting up insulating handle, improved the security when installing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic front side sectional view of the present invention;

FIG. 3 is a schematic view of the ring-shaped block structure of the present invention;

fig. 4 is a schematic view of the fixed conducting rod structure of the present invention.

In the figure: the vacuum tube comprises a ceramic vacuum tube body 1, an annular block 2, a clamping structure 3, a sliding chute 31, a clamping groove 32, a clamping block 33, a fixed conducting rod 4, a fixed contact 5, a sleeve 6, a movable conducting rod 7, a movable contact 8, a buffer component 9, a rotating ring 91, a movable rod 92, a fixed disk 93, a compression spring 94, a contact disk 95, an exhaust tube 10, a valve 11, a sealing ring 12 and an insulating handle 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example one

Referring to fig. 1-4, the present invention provides a technical solution: a vacuum tube for a vacuum circuit breaker comprises a ceramic vacuum tube body 1 and a clamping structure 3;

the bottom side middle part of the ceramic vacuum tube body 1 is provided with a through hole, a sleeve 6 is fixed in the through hole, a movable conducting rod 7 is connected in the sleeve 6 in a sliding way, a moving contact 8 is fixed at the upper end of the movable conducting rod 7, the moving contact 8 is positioned in the ceramic vacuum tube body 1, an annular block 2 is fixed at the upper end inner side of the ceramic vacuum tube body 1, the annular block 2 is of a hollow structure, a fixed conducting rod 4 is clamped in the annular block 2 in a matching way through a clamping structure 3, a fixed contact 5 is fixed at the bottom end of the fixed conducting rod 4, the fixed contact 5 is in matching contact with the moving contact 8, the left end side of the ceramic vacuum tube body 1 is provided with an exhaust tube 10, an air inlet of the exhaust tube 10 is communicated with the inner cavity of the ceramic vacuum tube body 1, a valve 11 is arranged at the middle part of the exhaust tube 10, the exhaust tube 10 is connected with the exhaust tube 10 through an external exhaust pump, and the control valve is convenient for exhausting air in the ceramic vacuum tube body 1 after the installation is completed, the outer side of the middle part of the fixed conducting rod 4 is equidistantly provided with at least three sealing rings 12, the sealing rings 12 are matched and hermetically connected with the inner side of the annular block 2, the upper end of the fixed conducting rod 4 is provided with an insulating handle 13, the sealing performance between the fixed conducting rod 4 and the annular block 2 after installation is ensured by arranging the sealing rings 12, and the safety during installation is improved by arranging the insulating handle 13;

clamping structure 3 includes spout 31, draw-in groove 32 and fixture block 33, spout 31 has been seted up respectively to the both ends about 2 inboard sides of annular piece, spout 31 is "L" shape structure, draw-in groove 32 has been seted up respectively to the horizontal end of spout 31, the left and right sides of deciding conducting rod 4 is equipped with the fixture block 33 with draw-in groove 32 cooperation joint respectively, will decide the bottom of conducting rod 4 and insert the middle part of annular piece 2, when deciding conducting rod 4 downwards according to the pressure, guarantee fixture block 33 and move down along spout 31, when fixture block 33 reachs spout 31 bottom, conducting rod 4 is decided to anticlockwise rotation, thereby make fixture block 33 joint in draw-in groove 32, it is simpler than the fixed mode structure of current use screw thread or glue, the operation is more convenient, stability is higher.

The outer side of the fixed conducting rod 4 is provided with a buffer assembly 9, the buffer assembly 9 comprises a rotating ring 91, a moving rod 92, a fixed disk 93, a compression spring 94 and a contact disk 95, the upper end side of the fixed conducting rod 4 is rotatably connected with the rotating ring 91, at least three through grooves are formed in the side surface of the rotating ring 91, the through grooves are arranged around the central shaft of the rotating ring 91 in an equidistant array mode, the moving rod 92 is respectively and slidably connected in the through grooves, the fixed disk 93 is respectively fixed at the upper end of the moving rod 92, the contact disk 95 is respectively arranged at the bottom end of the moving rod 92, the contact disk 95 is in matched contact with the upper side of the annular block 2, the compression spring 94 is respectively sleeved on the side surface of the moving rod 92, the two ends of the compression spring 94 are fixed at the upper side of the rotating ring 91 and the bottom side of the fixed disk 93, when the fixed conducting rod 4 and the annular block 2 are installed, the conducting rod 4 moves downwards, the moving rod 92 is driven to move downwards by the rotating ring 91, make compression spring 94 shrink at the in-process that removes 92 downstream, after the fixture block 33 joint of deciding conducting rod 4 side in draw-in groove 32, because compression spring 94 effect makes fixture block 33 hug closely in draw-in groove 32 upside, through setting up buffering subassembly 9, can effectively prevent to take place not hard up after the installation of deciding conducting rod 4 is accomplished, improved stability.

When in use: the bottom end of a fixed conducting rod 4 is inserted into the middle of an annular block 2, the fixture block 33 is ensured to move downwards along a sliding groove 31 while the fixed conducting rod 4 is pressed downwards, when the fixture block 33 reaches the bottom of the sliding groove 31, the fixed conducting rod 4 is rotated anticlockwise, so that the fixture block 33 is clamped in a clamping groove 32, compared with the existing fixing mode using threads or glue, the structure is simpler, the operation is more convenient, and the stability is higher, when the fixed conducting rod 4 and the annular block 2 are installed, the conducting rod 4 moves downwards, a moving rod 92 is driven to move downwards through a rotating ring 91, a compression spring 94 is contracted in the downward moving process of the moving rod 92, after the fixture block 33 on the side surface of the fixed conducting rod 4 is clamped in the clamping groove 32, the fixture block 33 is tightly attached to the upper side of the clamping groove 32 under the action of the compression spring 94, and through the arrangement of a buffer component 9, the looseness after the installation of the fixed conducting rod 4 can be effectively prevented, stability is improved, be connected with exhaust tube 10 through outside aspiration pump to through control flap, be convenient for with the air escape in the ceramic vacuum tube body 1 after the installation is accomplished, through setting up sealing washer 12, guaranteed the installation after accomplish decide the leakproofness between conducting rod 4 and the annular piece 2.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a vacuum tube for vacuum circuit breaker, includes ceramic vacuum tube body and joint structure, its characterized in that:

the clamping structure comprises a sliding groove, a clamping groove and clamping blocks, the sliding groove is formed in each of the left end and the right end of the inner side of the annular block, the sliding groove is of an L-shaped structure, the clamping groove is formed in each of the horizontal ends of the sliding grooves, and the clamping blocks matched with the clamping grooves in clamping are arranged on the left side and the right side of the fixed conducting rod respectively.

2. The vacuum tube of claim 1, wherein: decide the outside of conducting rod and be equipped with buffering subassembly, buffering subassembly includes swivel becket, carriage release lever, fixed disk, compression spring and contact disc, the upper end side of deciding the conducting rod is rotated and is connected with the swivel becket, three logical groove is no less than offered to the side inside of swivel becket, and leads to the center pin equidistance array setting round the swivel becket, it has the carriage release lever to lead to inslot sliding connection respectively, the upper end of carriage release lever is fixed with the fixed disk respectively, the bottom of carriage release lever is equipped with the contact disc respectively, the upside cooperation contact of contact disc and annular piece, compression spring has been cup jointed respectively to the side of carriage release lever, the upside of swivel becket and the bottom side of fixed disk are fixed at compression spring's both ends.

3. The vacuum tube of claim 1, wherein: the side face of the left end of the ceramic vacuum tube body is provided with an exhaust tube, an air inlet of the exhaust tube is communicated with an inner cavity of the ceramic vacuum tube body, and a valve is arranged in the middle of the exhaust tube.

4. The vacuum tube of claim 1, wherein: decide the middle part outside equidistance of conducting rod and be equipped with and be no less than three sealing washer, the inboard cooperation sealing connection of sealing washer and annular piece, the upper end of deciding the conducting rod is equipped with insulating handle.