CN105355501B - A kind of potting breaker connecting seat and potting breaker - Google Patents

Abstract

The invention relates to a connection seat for a tank circuit breaker and a tank circuit breaker. The connection seat includes a mechanism connection plate for connecting with a hydraulic operating mechanism and a switch connection plate for connecting with a tank body of the circuit breaker. The mechanism connection The plate and the switch connection plate are coaxially arranged and the two are fixedly connected together through a coaxially arranged connecting sleeve. At least three support columns are connected around the connection sleeve between the mechanism connection plate and the switch connection plate. It is hinged with the connection plate of the mechanism, and the other end is fixedly connected with the connection plate of the switch, and the supporting column is arranged inclined outward along the radial direction of the connecting sleeve from the hinged end to the fixed end. The purpose of the present invention is to provide a connection seat with compact structure and reliable strength to solve the technical problem in the prior art that the connection of the hydraulic operating mechanism of the tank circuit breaker is prone to rupture during transportation.

Description

Connecting seat for tank type circuit breaker and tank type circuit breaker

technical field

The invention relates to a connection seat for a tank-type circuit breaker and the tank-type circuit breaker, belonging to the technical field of ultra-high voltage switches.

Background technique

Ultra-high voltage sulfur hexafluoride tank circuit breakers have been gradually popularized and applied in the field of power grids due to their good on-off capability, superior shock resistance and the ability to integrate current transformers. Due to the large operating power of the ultra-high pressure tank circuit breaker, a hydraulic operating mechanism or a hydraulic disc spring operating mechanism is usually used to realize the breaking of the circuit breaker. The hydraulic disc spring mechanism is widely used in ultra- High voltage sulfur hexafluoride tank circuit breaker. The transmission between the hydraulic disc spring operating mechanism and the sulfur hexafluoride tank circuit breaker is a direct drive, so the circuit breaker body and the hydraulic disc spring operating mechanism need to be connected horizontally. For example, the application date is 2007.8.22 , The Chinese utility model patent with the authorized announcement number CN 201146148Y discloses such a tank-type sulfur hexafluoride circuit breaker. The circuit breaker includes a straight tank body whose axis extends along the front and rear directions. The flange structure is connected with the tank cover, and the tank is equipped with an arc extinguishing chamber moving contact and an insulating pull rod. The rear end of the insulating pull rod is connected with the arc extinguishing chamber moving contact, and the front end of the insulating pull rod extends out of the tank body and moves with the tank cover. Coordinated, the front end of the tank body is connected with a hydraulic operating mechanism, and the piston rod of the hydraulic operating mechanism is connected to the insulating pull rod to drive the insulating pull rod to move axially.

Due to the structural limitations of the tank-type circuit breaker and the hydraulic disc spring operating mechanism, a reliable connection between the tank body and the hydraulic operating mechanism requires the use of a connecting seat. The connecting seat used in the above-mentioned tank-type sulfur hexafluoride circuit breaker It consists of a tower-shaped shell, the front end of the connecting seat is connected to the rear end of the hydraulic operating mechanism, and the rear end is connected to the front end of the tank through a flange structure. Since the hydraulic operating mechanism and the tank are connected through the connecting seat, the insulating rod between the hydraulic operating mechanism and the moving contact of the arc extinguishing chamber is lengthened, which reduces the stability of the insulating rod, thereby reducing the operating time of the circuit breaker. Mechanical reliability; in addition, the connecting seat is a tapered structure whose outer diameter gradually increases from front to back, so that the front and rear ends of the connecting seat can respectively adapt to the hydraulic disc spring operating mechanism and the circuit breaker body. The operating mechanism is in a cantilevered state, and the integral shell structure cannot meet the strength requirements. When in use, auxiliary supports can be set on the foundation to ensure the stability of the hydraulic operating mechanism. However, during product transportation, due to auxiliary The support cannot be connected with the foundation and cannot achieve the role of auxiliary support, so the hydraulic operating mechanism is prone to vibration, causing the joint between the connecting seat and the hydraulic operating mechanism to be prone to fracture and damage.

Contents of the invention

The purpose of the present invention is to provide a tank circuit breaker connection seat with compact structure and reliable strength to solve the technical problem in the prior art that the connection of the hydraulic operating mechanism of the tank circuit breaker is prone to rupture during transportation. Another object of the present invention is to provide a tank circuit breaker.

To achieve the above object, the present invention adopts the following technical solutions:

A connection seat for a tank circuit breaker, comprising a mechanism connection plate for connecting with a hydraulic operating mechanism and a switch connection plate for connecting with the tank body of the circuit breaker, the mechanism connection plate and the switch connection plate are arranged coaxially and both Fixedly connected together through the coaxial connection sleeve, at least three support columns are connected around the connection sleeve between the mechanism connection plate and the switch connection plate, one end of the support column is hinged with the mechanism connection plate, and the other end is connected with the switch The discs are fixedly connected, and the support column is arranged to be inclined outward along the radial direction of the connecting sleeve from the hinged end to the fixed end.

The support column has a stop limit surface for blocking and matching with the mechanism connection plate, and one end of the support column corresponding to the mechanism connection plate is in contact with the mechanism connection plate when the stop limit surface and the mechanism connection plate stop and limit cooperate. hinged.

The connecting sleeve and the mechanism connecting plate are integrally formed, and the connecting sleeve and the switch connecting plate are detachably connected through a connecting flange.

The mechanism connection plate has a cover structure for covering the outside of the movement of the hydraulic operating mechanism.

The connecting plate of the mechanism is provided with a lifting lug structure corresponding to the supporting column. The supporting column includes a supporting column body with a U-shaped cross section. The side wall of the supporting column body is provided with a pin hole corresponding to the perforation of the lifting lug structure. , the support column is hinged with the mechanism connecting plate through the pin shaft installed in the perforation hole and the pin shaft hole.

The tank circuit breaker includes a tank body and a hydraulic operating mechanism. The hydraulic operating mechanism is connected to the tank body through a connecting seat. The connecting seat includes a mechanism connection plate connected to the hydraulic operating mechanism and a The switch connection plate, the mechanism connection plate and the switch connection plate are coaxially arranged and the two are fixedly connected together through the coaxially arranged connecting sleeve. The mechanism connection plate and the switch connection plate are connected with at least Three support columns, one end of the support column is hinged with the mechanism connection plate, and the other end is fixedly connected with the switch connection plate, and the support columns are arranged radially outward along the connecting sleeve from the hinged end to the fixed connection end.

The support column has a stop-limiting surface that cooperates with the mechanism connection plate, and one end of the support column that corresponds to the mechanism connection plate is hinged with the mechanism connection plate when the stop limit surface and the mechanism connection plate stop and limit cooperate.

The connecting sleeve and the mechanism connecting plate are integrally formed, and the connecting sleeve and the switch connecting plate are detachably connected through a connecting flange.

The mechanism connection plate has a cover structure for covering the outside of the movement of the hydraulic operating mechanism.

The connecting plate of the mechanism is provided with a lifting lug structure corresponding to the supporting column. The supporting column includes a supporting column body with a U-shaped cross section. The side wall of the supporting column body is provided with a pin hole corresponding to the perforation of the lifting lug structure. , the support column is hinged with the mechanism connecting plate through the pin shaft installed in the perforation hole and the pin shaft hole.

The beneficial technical effects of the invention are: the connection seat includes a mechanism connection plate and a switch connection plate, the mechanism connection plate and the switch connection plate are coaxial and connected together through the connecting sleeve between the two, when the connection seat is used, the mechanism connection The plate is fixedly connected with the hydraulic operating mechanism, the switch connection plate is fixedly connected with the tank body of the circuit breaker, and a support column is arranged around the circumference of the connection sleeve between the mechanism connection plate and the switch connection plate, and one end of the support column is hinged with the mechanism connection plate. The other end is fixedly connected to the switch connecting plate, and the supporting column is arranged radially outward along the connecting sleeve from the hinged end to the fixed connecting end. On the one hand, the supporting column plays the role of supporting and connecting the mechanism connecting plate and the switch connecting plate. On the one hand, since the supporting column is hinged to the connecting plate of the mechanism, the connecting seat is subjected to its own internal force, which can reduce the relative vibration between the connecting seat and the hydraulic operating mechanism caused by the vibration of the hydraulic operating mechanism, thereby avoiding the connection between the hydraulic operating mechanism and the connecting seat The situation where it is easy to break at the position.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the tank circuit breaker of the present invention;

Fig. 2 is a schematic structural view of the connecting seat in Embodiment 1 of the tank circuit breaker of the present invention;

Fig. 3 is A-A sectional view among Fig. 2;

Fig. 4 is a schematic structural view of the connection base in Embodiment 1 of the tank circuit breaker of the present invention;

Fig. 5 is a schematic cross-sectional view of Fig. 4;

Fig. 6 is a schematic perspective view of the supporting column in Embodiment 1 of the tank circuit breaker of the present invention.

detailed description

Embodiment 1 of the tank-type circuit breaker of the present invention, as shown in Figure 1-6, the tank-type circuit breaker is a tank-type sulfur hexafluoride circuit breaker, mainly including a hydraulic operating mechanism 1 and a tank body 3, the hydraulic operating mechanism 1 is connected with the tank body 3 through the connecting seat 2, and the tank body is pierced with insulating pull rods.

The connection seat 2 mainly includes a connection base 4 and a switch connection plate 5 for connecting with the tank body 3. The switch connection plate 5 is a flange structure, and the flange structure is provided with two rings of connection holes inside and outside, and the connection holes of the outer ring are connected to the tank body. 3, the connection hole of the inner ring corresponds to the connection base 4. The connection base 4 is a T-shaped structure with guide holes running through the front and back. When in use, the insulating pull rod of the circuit breaker is guided through the guide hole to avoid insulation Deviation occurs when the lever is moved. The connecting base 4 includes a mechanism connecting plate 41 for connecting with the hydraulic operating mechanism and a connecting sleeve 42 for connecting the switch connecting plate 5 and the mechanism connecting plate 41. The connecting sleeve 42 and the mechanism connecting plate 41 are arranged coaxially and integrally. Casting molding, the connecting sleeve 42 includes a cylindrical barrel 421 coaxially arranged with the mechanism connecting plate 41 and a connecting flange 422 arranged at the rear end of the cylindrical barrel 421. The connecting flange 422 can be connected to the switch connecting plate 5 through connecting bolts. Disconnect. The diameter of connecting sleeve 42 is less than the diameter of mechanism connection plate 41, is connected with support column 6 between switch connection plate 5 and mechanism connection plate 41, and support column 6 has four and is evenly distributed around the circumference of connection sleeve 42, supports One end of the column 6 is hinged with the mechanism connecting plate 41, and the other end is fixedly connected with the switch connecting plate 5. The supporting column 6 is arranged to be inclined outward along the radial direction of the connecting sleeve 42 from the hinged end to the fixed end. In this embodiment, the supporting There are four columns 6 uniformly distributed around the circumference, and in other embodiments, there may be three, five, six and so on.

The support column 6 is integrally cast and formed, which mainly includes a support column body with a U-shaped cross section. A pin hole is provided at one end of the support column body corresponding to the mechanism connection plate, and a pin hole is opened at the end of the support column body corresponding to the switch connection plate. There is a support base 62 for connecting with the switch connection plate 5, and the support base 62 is provided with bolt holes. The outer edge of the mechanism connection plate 41 is provided with a lifting lug structure 411 corresponding to the support column. When transporting the connection base, it can be carried by means of lifting equipment and the lifting lug structure 411, which saves labor and is convenient and quick. One end of the support column 6 corresponding to the mechanism connection plate is provided with a stop limit surface 61, the stop limit surface 61 is a slope, and the mechanism connection plate 41 is provided with stop limit surfaces on opposite sides of the lifting lug structure 411. noodle. When the support column is connected to the mechanism connection base 4, the opening of the support column body is made to face inwardly, and the support column body envelops the lifting lug structure 411, and the pin shaft hole of the support column body corresponds to the perforation of the lifting lug structure, and is fixed on the pin shaft. The pin shaft 7 is worn in the perforation of the hole and the lifting lug structure, so that the support column 6 is hinged with the mechanism connection plate 41, and the bolt perforation on the support seat is corresponding to the connection hole on the mechanism connection plate, and the wear bolt connects the support column to the mechanism connection plate. The mechanism connection plate is fixedly connected. The support column 6 is inclined outward along the radial direction of the connecting sleeve 42 from the hinged end to the fixed end. When the mechanism connection plate 41 is subjected to the radial force of the hydraulic operating mechanism 1, the pin shaft 7 is subjected to shear force, and the mechanism is connected. The two stop limit surfaces on the disc 41 and the support column 6 are extruded and matched, so that the connecting seat in the present invention is subjected to its own internal force, and the hinged mode of the supporting column and the mechanism connecting seat can weaken the hydraulic operating mechanism when vibrating up and down. The resulting vibration between the hydraulic operating mechanism and the connecting seat prevents fracture between the hydraulic operating mechanism and the connecting seat, and improves the connection reliability of the connecting seat.

In this embodiment, ribs 423 are provided on the outer wall of the cylindrical cylinder 421, which can improve the structural strength of the connecting sleeve. There are four ribs 423 evenly distributed around the circumference, and the four ribs and the four support columns surround each other. The circumferential direction is staggered by a certain angle. In this embodiment, the rib plate and the support column are staggered by 45 degrees in the circumferential direction.

The mechanism connection plate 41 is a cover-type structure, and the inner bottom wall of the mechanism connection plate is provided with a threaded hole 9. When the connection base 4 is connected with the hydraulic operating mechanism 1, the mechanism connection plate 41 is covered outside the core of the hydraulic operating mechanism. Bolts are screwed in the threaded holes 9 to fixedly connect the core of the hydraulic operating mechanism to the connection base 4, and the mechanism connection plate 41 is covered outside the core to play the role of waterproof and dustproof.

The embodiment of the connecting seat for the tank circuit breaker of the present invention is shown in Figs. 2-6, the structure of the connecting seat is as above, in order to avoid repetition, no detailed description is given here.

Claims (10)

1. A connection seat for a tank circuit breaker, characterized in that it includes a mechanism connection plate for connecting with a hydraulic operating mechanism, a switch connection plate for connecting with a tank body of a circuit breaker, a mechanism connection plate and a switch connection plate Coaxially arranged and the two are fixedly connected together by a coaxially arranged connecting sleeve, at least three supporting columns are connected around the connecting sleeve between the mechanism connecting plate and the switch connecting plate in the circumferential direction, and one end of the supporting column is hinged to the mechanism connecting plate , the other end is fixedly connected with the switch connection plate, and the support column is arranged to be inclined outward along the radial direction of the connecting sleeve from the hinged end to the fixed end. 2. The connection seat for tank circuit breaker according to claim 1, characterized in that: the support column has a stop limit surface for blocking and cooperating with the mechanism connection plate, and one end of the support column corresponding to the mechanism connection plate When the stop limit surface cooperates with the stop limit of the mechanism connection plate, it is hinged with the mechanism connection plate. 3. The connection seat for tank circuit breaker according to claim 1, characterized in that: the connection sleeve and the mechanism connection plate are integrally formed, and the connection sleeve and the switch connection plate are detachably connected through a connecting flange. 4. The connection seat for tank circuit breaker according to claim 1, characterized in that: the mechanism connection plate has a cover structure for covering the outside of the core of the hydraulic operating mechanism. 5. The connecting seat for a tank circuit breaker according to any one of claims 1-4, characterized in that: the mechanism connection plate is provided with a lifting lug structure corresponding to the supporting column, and the supporting column includes a U-shaped cross section. The support column body, the side wall of the support column body is provided with a pin hole corresponding to the perforation of the lifting lug structure, and the support column is hinged to the mechanism connection plate through the pin shaft installed in the perforation and pin hole. 6. Tank type circuit breaker, including a tank body and a hydraulic operating mechanism, the hydraulic operating mechanism is connected to the tank body through a connecting seat, characterized in that: the connecting seat includes a mechanism connection plate connected to the hydraulic operating mechanism and a circuit breaker The switch connection plate connected to the tank body of the device, the mechanism connection plate and the switch connection plate are coaxially arranged and the two are fixedly connected together through the coaxially arranged connecting sleeve, and a winding connection sleeve is connected between the mechanism connection plate and the switch connection plate There are at least three support columns distributed in the circumferential direction of the cylinder. One end of the support column is hinged to the mechanism connection plate, and the other end is fixedly connected to the switch connection plate. The support columns are arranged radially outward along the connecting sleeve from the hinged end to the fixed connection end. 7. The pot circuit breaker according to claim 6, characterized in that: the support column has a stop and limit surface that cooperates with the connection plate of the mechanism, and the end of the support column corresponding to the connection plate of the mechanism is at the stop limit When the surface is matched with the stop limit of the mechanism connection disk, it is hinged with the mechanism connection disk. 8 . The tank circuit breaker according to claim 6 , wherein the connection sleeve and the connection plate of the mechanism are integrally formed, and the connection sleeve and the switch connection plate are detachably connected through a connecting flange. 9. The tank circuit breaker according to claim 6, wherein the mechanism connection plate has a cover structure for covering the outside of the core of the hydraulic operating mechanism. 10. The tank circuit breaker according to any one of claims 6-9, characterized in that: the mechanism connection plate is provided with a lifting lug structure corresponding to the supporting column, and the supporting column includes a supporting column with a U-shaped cross section The main body and the side wall of the support column body are provided with pin holes corresponding to the perforations of the lifting lug structure, and the support column is hinged to the mechanism connection plate through the pin shafts installed in the perforation and pin holes.