CN215988610U

CN215988610U - Dampproofing outdoor circuit breaker insulating cylinder and circuit breaker

Info

Publication number: CN215988610U
Application number: CN202121872907.9U
Authority: CN
Inventors: 束明亮; 朱钱标
Original assignee: Jiangsu Hongda Electric Co ltd
Current assignee: Jiangsu Hongda Electric Co ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-03-08
Anticipated expiration: 2031-08-11

Abstract

The utility model discloses a moisture-proof outdoor circuit breaker insulating cylinder and a circuit breaker, wherein the insulating cylinder comprises a first insulating cylinder and a second insulating cylinder which is hermetically connected with one end of the first insulating cylinder, one end of the second insulating cylinder is provided with a corrugated rubber pad, the corrugated rubber pad comprises a sealing ring and a corrugated ring, a spring washer and a contact pressure spring which enables the circuit breaker to be kept in a switching-on state are sleeved on an insulating pull rod, one end of the insulating cylinder is connected with an upper conductive rod, an arc extinguish chamber is arranged in the first insulating cylinder, the bottom end of the arc extinguish chamber is connected with a moving contact which is connected with the insulating pull rod, the corrugated ring extends towards the inner cavity, the bottom end of the second insulating cylinder is provided with a sealing groove, and the sealing ring is connected with the sealing groove. The contact spring is outwards elastically provided to improve the compression degree of the spring washer to the corrugated ring, improve the stability of the corrugated ring, prevent small animals, moisture and dust from entering the inner cavity of the insulating cylinder II, and avoid the invasion of external impurities due to the existence of gaps.

Description

Dampproofing outdoor circuit breaker insulating cylinder and circuit breaker

Technical Field

The utility model relates to the technical field of high-voltage vacuum circuit breakers, in particular to a moisture-proof outdoor circuit breaker insulating cylinder and a circuit breaker.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. The circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to the application range, the high-voltage and low-voltage boundary lines are relatively vague, and the circuit breakers above 3kV are generally called high-voltage electric appliances. The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, and automatically cutting off a circuit when faults such as serious overload, short circuit, undervoltage and the like occur, and the function of the circuit breaker is equivalent to the combination of a fuse type switch, an over-under-heat relay and the like. Furthermore, no parts need to be changed after breaking the fault current. At present, it has been widely used. The vacuum arc-extinguishing chamber, the primary conductive component, the fastener, the insulating pull rod and the like are installed in the insulating cylinder, so that the high-voltage vacuum circuit breaker is common in the market at present.

The insulating cylinder circuit breaker is characterized in that an operating mechanism drives a vacuum arc extinguish chamber to be opened and closed through an insulating pull rod, the insulating pull rod is arranged at the bottom of the insulating cylinder, the bottom of the insulating cylinder is in a hollow state, and the insulating cylinder is easy to be invaded into the insulating cylinder by external dust, moisture and small animals, so that the insulating properties of the insulating cylinder and the insulating pull rod are reduced, even the circuit breaker is short-circuited, and the performance of the circuit breaker is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a dustproof and moisture-proof outdoor breaker insulating cylinder, wherein a corrugated rubber ring with better flexibility is arranged at the bottom of the insulating cylinder, the corrugated rubber ring and an insulating pull rod are well adhered or integrally pressed and poured, and the corrugated rubber ring and the bottom of the insulating cylinder are fixedly pressed and connected through a fastening piece, so that an arc extinguish chamber and a conductive part are sealed in the insulating cylinder, external dust and moisture are prevented from invading into the insulating cylinder II, the advantage of good isolation and full-closed effect is achieved, the influence of external environment change on the arc extinguish chamber and the conductive part in the insulating cylinder is avoided, the insulating strength of the insulating cylinder is improved, and the electrical performance of the breaker is improved.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a dampproofing outdoor circuit breaker insulating cylinder on the one hand, include insulating cylinder one and sealing connection are in the insulating cylinder two of insulating cylinder one end, the one end of insulating cylinder two is equipped with the ripple cushion, the ripple cushion includes sealing washer, ripple circle, be equipped with the inner chamber of axial setting in the insulating cylinder two, the inner chamber runs through insulating pull rod, insulating pull rod cover has the contact pressure spring that spring washer and make the circuit breaker combined floodgate keep, an insulating cylinder end connection has last conducting rod, and is equipped with the explosion chamber in the insulating cylinder one, the explosion chamber bottom is connected with the moving contact of connecting in insulating pull rod, the ripple circle extends to inner chamber inside, two bottoms of insulating cylinder are equipped with the seal groove, the sealing washer is connected with the seal groove.

Preferably, two ends of the contact pressure spring are fixedly connected with a spring washer, and the spring washer is connected with the insulating pull rod through threads.

Preferably, the corrugated rubber mat further comprises a flat rubber mat, a through hole and at least three fixing holes, the insulating pull rod penetrates through the through hole, the insulating pull rod comprises an annular skirt edge, a table top is arranged on the end face of the annular skirt edge, the flat rubber mat is located between the table top and the spring washer, and the fixing holes are connected in screw thread pieces at the two bottom ends of the insulating cylinder through fastening pieces in a threaded mode.

Preferably, the sealing groove is in interference fit with the sealing ring.

Preferably, insulating pull rod still includes spread groove, outer thread, guide bar and connecting rod groove, the spread groove sets up at annular shirt rim tip, annular shirt rim bottom is connected at the guide bar tip through outer thread, the connecting rod groove sets up in the guide bar side.

Preferably, the two ends of the insulating pull rod are respectively connected with a connecting rod and a driving connecting block, the end part of the connecting rod is connected with the moving contact, the driving connecting block and the insulating pull rod are locked through a connecting rod pin, and the length of the connecting rod is adjustable.

Preferably, a pressing plate is arranged between the corrugated rubber mat and the fastening piece, the pressing plate is provided with a first through hole corresponding to the fastening piece, and a second through hole through which the insulating pull rod passes is arranged.

Preferably, the spring washer comprises a flat position and a boss, and the flat position is arranged on the side surface of the boss.

Preferably, an adhesive used for tightly connecting the table top and the flat rubber pad is arranged between the table top and the flat rubber pad, or the table top and the flat rubber pad are integrally injected by pressing.

Another aspect provides a circuit breaker: comprising any one of the aforementioned moisture-proof outdoor breaker insulating cartridges.

Compared with the prior art, the utility model has the following beneficial effects: according to the utility model, the corrugated ring is compressed by matching the contact pressure spring with the spring washer, the outward elasticity of the contact pressure spring improves the compression degree of the spring washer on the corrugated ring, the stability of the corrugated ring is improved, small animals, moisture and dust are prevented from entering the inner cavity of the insulating cylinder II, the invasion of external impurities due to the existence of gaps is avoided, and meanwhile, the high-voltage electrified body in the inner cavity is in a closed state, so that the insulating property and the electric property of the high-voltage electrified body to the ground are improved, the reliability of the circuit breaker is improved, the corrugated ring has certain elasticity, the insulating pull rod can conveniently move up and down, and the operation of the insulating cylinder is facilitated.

Be equipped with the seal groove through two bottoms of insulating cylinder, and the seamless phase-match of seal groove and sealing washer can realize good location to the ripple cushion, makes things convenient for follow-up installation, can strengthen sealed effect again, avoids having the clearance to lead to external impurity to invade.

Drawings

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is a schematic view of a connection structure between the bottom of the second insulating cylinder and a contact pressure spring according to the utility model;

FIG. 3 is a schematic view of the structure of the corrugated rubber mat according to the present invention;

FIG. 4 is a schematic view of a spring washer of the present invention;

FIG. 5 is a schematic view of the internal structure of the second insulating cylinder of the present invention;

FIG. 6 is a schematic view of the structure of the insulating pull rod of the present invention;

fig. 7 is an external structural view of the present invention.

In the figure: 1. an upper conductive rod; 2. a first insulating cylinder; 21. an arc extinguishing chamber; 211. static contact; 22. a moving contact; 23. copper flexible connection; 3. a lower conductive rod; 4. a second insulating cylinder; 41. an inner cavity; 42. a connecting rod; 44. a screw member; 45. a sealing groove; 5. a corrugated rubber mat; 51. a seal ring; 52. a corrugated ring; 521. flattening the rubber pad; 53. a through hole; 54. a fixing hole; 6. a fastener; 6.1, a pressure plate 7 and a spring washer; 71. flattening; 72. a boss; 73. internal threads; 8. a contact pressure spring; 9. an insulating pull rod; 91. connecting grooves; 92. an annular skirt; 921. a table top; 93. external thread; 94. a guide bar; 95. a connecting rod slot; 10. a driving connecting block; 11. a link pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 7, the present invention provides a moisture-proof outdoor circuit breaker insulation cylinder and a circuit breaker,

including insulating cylinder 2 and sealing connection in insulating cylinder two 4 of insulating cylinder 2 one end, the one end of insulating cylinder two 4 is equipped with ripple cushion 5, and ripple cushion 5 plays sealed, insulating effect. The corrugated rubber gasket 5 comprises a sealing ring 51 and a corrugated ring 52, and the corrugated ring 52 has certain elasticity, so that the insulating pull rod 9 can move up and down conveniently, and the operation of the insulating cylinder is facilitated. An inner cavity 41 which is axially arranged is formed in the second insulating cylinder 4, an insulating pull rod 9 penetrates through the inner cavity 41, a contact pressure spring 8 and a spring washer 7 are sleeved on the insulating pull rod 9, the end portion of the first insulating cylinder 2 is connected with an upper conducting rod 1, an arc extinguishing chamber 21 is formed in the first insulating cylinder 2, and the arc extinguishing chamber 21 can rapidly extinguish arc and restrain current after a medium-high voltage circuit is cut off a power supply through excellent insulating property of vacuum in the tube, so that accidents and accidents are avoided. The bottom end of the arc extinguish chamber 21 is connected with a moving contact 22 connected with the insulating pull rod 9, the moving contact 22 is connected with the lower conducting rod 3 through a copper flexible connection 23, and the circuit breaker is connected with a power grid through the upper conducting rod 1 and the lower conducting rod 3.

The moving contact 22 is further connected with the insulating pull rod 9 through a connecting rod 42, and an operating mechanism (belonging to the prior art) drives the insulating pull rod 9 through a driving connecting block 10, so that the arc extinguish chamber 21 is driven to be opened and closed, and the circuit breaker is used for closing and opening a power grid line.

The lower portion of the insulating pull rod 9 is sleeved with a contact pressure spring 8, an operating mechanism is switched on, the operating mechanism drives the insulating pull rod 9 to upwards push a moving contact 22 through a driving connecting block 10, the moving contact 22 is in contact with a fixed contact 211 to achieve switching on of the circuit breaker, the driving connecting block 10 drives the insulating pull rod 9 to upwards move and simultaneously extrude the contact pressure spring 8, the reaction force of the contact pressure spring 8 is applied to the insulating pull rod 9, the moving contact 22 is in good contact with the fixed contact 211 under the condition that sufficient force is kept through the insulating pull rod 9, and switching on keeping of the circuit breaker is achieved.

The two ends of the contact pressure spring 8 are provided with spring washers 7, the two spring washers 7 can abut against the contact pressure spring 8 to position and guide the contact pressure spring, each spring washer 7 comprises a flat position 71 and a boss 72, the flat position 71 is arranged on the side surface of the boss 72, the spring washers 7 are connected with the insulating pull rod 9 through threads, the spring washers 7 are matched with outer threads 93 of the insulating pull rod 9 through inner threads 73, tools are clamped into the flat positions 71 to adjust the positions of the spring washers 7, and the bosses 72 extend into the inner cavities 41 of the contact pressure springs 8 to position and guide the contact pressure springs.

The corrugated rubber mat 5 further comprises a flat rubber mat 521, a through hole 53 and at least three fixing holes 54, the insulating pull rod 9 penetrates through the through hole 53, the flat rubber mat 521 is located between the table-board 921 of the insulating pull rod 9 and the spring washer 7, and adhesive can be coated on the contact surface of the table-board 921 and the flat rubber mat 521, so that the table-board 921 and the flat rubber mat 521 are firmly adhered or the two are integrally poured. The fixing hole 54 is in threaded connection with the thread piece 44 at the bottom end of the second insulating cylinder 4 through a fastener 6, the fastener 6 is a common bolt, and meanwhile, the corrugated rubber gasket 5 and the second insulating cylinder 4 are firmly connected and are not easy to loosen; the two 4 bottom ends of insulating cylinder are equipped with seal groove 45, seal groove 45 and sealing washer 51 interference fit, can realize fixing a position 5 good to ripple cushion, make things convenient for follow-up installation, the sealed effect of reinforcing prevents the toy, moisture, the dust gets into the inner chamber 41 of insulating cylinder two 4, avoid having the clearance to lead to external impurity to invade, make the electrified body of high voltage in the inner chamber 41 be in the encapsulated situation simultaneously, improved the insulating properties and the electrical property of the electrified body of high voltage to ground greatly, improve the reliability of circuit breaker.

The insulating pull rod 9 comprises a connecting groove 91, an annular skirt 92, an outer thread 93, a guide rod 94 and a connecting rod groove 95, wherein the connecting groove 91 is arranged at the end part of the annular skirt 92, the bottom end of the annular skirt 92 is connected at the end part of the guide rod 94 through the outer thread 93, and the other end of the guide rod 94 is provided with the connecting rod groove 95.

The both ends of insulating pull rod 9 are connected with connecting rod 42, drive connecting block 10 respectively, and connecting rod 42 tip links to each other with moving contact 22, and the length of connecting rod 42 is adjustable, and drive connecting block 10 passes through connecting rod round pin 11 with insulating pull rod 9 and locks, improves drive connecting block 10 and insulating pull rod 9 and is connected the steadiness.

In order to realize better sealing of the corrugated rubber mat 5 to the bottom of the second insulating cylinder 4, a pressing plate 6.1 is arranged between the corrugated rubber mat 5 and the fastening piece 6, the pressing plate 6.1 is provided with a first through hole corresponding to the fastening piece 6, and a second through hole for allowing the insulating pull rod 9 to pass through is arranged.

This embodiment still discloses a circuit breaker, adopts the aforesaid dampproofing outdoor circuit breaker insulating cylinder of this embodiment.

The working principle is as follows: when the insulating cylinder of the circuit breaker is used, the bottom end of the second insulating cylinder 4 is provided with the corrugated rubber pad 5, the corrugated rubber pad 5 comprises a sealing ring 51, a corrugated ring 52, a flat rubber pad 521, at least three fixing holes 54 and through holes 53, the insulating pull rod 9 penetrates through the through holes 53, the flat rubber pad 521 is positioned between the table surface 921 of the insulating pull rod 9 and the spring washer 7, adhesive can be coated on the contact surface of the table surface 921 and the flat rubber pad 521, so that the table surface 921 and the flat rubber pad 521 are firmly bonded or the two are integrally pressed and poured, the fixing holes 54 are connected into the screw thread piece 44 at the bottom end of the second insulating cylinder 4 through the fastening piece 6 in a threaded manner, the fastening piece 6 adopts common bolts, and meanwhile, the corrugated rubber pad 5 and the second insulating cylinder 4 are firmly connected and are not easy to loosen; the two 4 bottom ends of insulating cylinder are equipped with seal groove 45, seal groove 45 and sealing washer 51 interference fit, can realize fixing a position 5 good to ripple cushion, convenient follow-up installation, can strengthen sealed effect again, prevent the toy, moisture, the dust gets into the inner chamber 41 of insulating cylinder two 4, avoid having the clearance to lead to external impurity to invade, make the electrified body of high voltage in the inner chamber 41 be in the encapsulated situation simultaneously, improved insulating properties and the electrical property of the electrified body of high voltage to ground greatly, improve the reliability of circuit breaker.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a dampproofing outdoor circuit breaker insulating cylinder, its characterized in that, includes insulating cylinder one (2) and sealing connection in insulating cylinder two (4) of insulating cylinder one (2) one end, the one end of insulating cylinder two (4) is equipped with ripple cushion (5), ripple cushion (5) include sealing washer (51), ripple circle (52), be equipped with inner chamber (41) that the axial set up in insulating cylinder two (4), it has insulating pull rod (9) to run through in inner chamber (41), insulating pull rod (9) cover has spring washer (7) and makes contact pressure spring (8) that the circuit breaker combined floodgate kept, insulating cylinder one (2) end connection has last conducting rod (1), and is equipped with explosion chamber (21) in insulating cylinder one (2), explosion chamber (21) bottom is connected with moving contact (22) of connecting in insulating pull rod (9), ripple circle (52) extend to inner chamber (41) inside, and a sealing groove (45) is formed in the bottom end of the second insulating cylinder (4), and the sealing ring (51) is connected with the sealing groove (45).

2. The moisture-proof outdoor breaker insulating cylinder according to claim 1, characterized in that both ends of the contact pressure spring (8) are fixedly connected with a spring washer (7), and the spring washer (7) is connected with an insulating pull rod (9) through threads.

3. The moisture-proof outdoor breaker insulation barrel of claim 1, characterized in that the corrugated rubber gasket (5) further comprises a flat rubber gasket (521), a through hole (53) and at least three fixing holes (54), the insulation pull rod (9) passes through the through hole (53), the insulation pull rod (9) comprises an annular skirt (92), the end face of the annular skirt (92) is provided with a table top (921), the flat rubber gasket (521) is positioned between the table top (921) and the spring washer (7), and the fixing holes (54) are in threaded connection in the bottom thread piece (44) of the second insulation barrel (4) through fasteners (6).

4. Moisture-proof outdoor breaker insulation barrel according to claim 1, characterized in that the sealing groove (45) is interference-fitted with a sealing ring (51).

5. The moisture-proof outdoor breaker insulating cylinder according to claim 3, wherein the insulating pull rod (9) further comprises a connecting groove (91), an outer thread (93), a guide rod (94) and a connecting rod groove (95), the connecting groove (91) is arranged at the end of the annular skirt (92), the bottom end of the annular skirt (92) is connected to the end of the guide rod (94) through the outer thread (93), and the other end of the guide rod (94) is provided with the connecting rod groove (95).

6. The moisture-proof outdoor breaker insulating cylinder according to claim 1, wherein a connecting rod (42) and a driving connecting block (10) are respectively connected to two ends of the insulating pull rod (9), the end of the connecting rod (42) is connected with the movable contact (22), the driving connecting block (10) and the insulating pull rod (9) are locked through a connecting rod pin (11), and the length of the connecting rod (42) is adjustable.

7. The moisture-proof outdoor breaker insulating cylinder according to claim 1, characterized in that a pressing plate (6.1) is arranged between the corrugated rubber gasket (5) and the fastening piece (6), the pressing plate (6.1) is provided with a first through hole corresponding to the fastening piece (6), and a second through hole through which the insulating pull rod (9) passes is arranged.

8. Moisture-proof outdoor breaker insulation barrel according to claim 2, characterized in that the spring washer (7) comprises a flat (71), a boss (72), the flat (71) being arranged at the side of the boss (72).

9. The moisture-proof outdoor breaker insulating cylinder according to claim 3, characterized in that an adhesive for tightly connecting the table top (921) and the flat rubber gasket (521) is arranged between the table top (921) and the flat rubber gasket (521) or the table top (921) and the flat rubber gasket (521) are integrally injected.

10. A circuit breaker comprising the moisture resistant outdoor breaker insulation can of any one of claims 1 to 9.