CN212062271U - Novel insulating torsion bar for high-voltage isolating switch - Google Patents

Abstract

The utility model discloses a novel high voltage isolator is with insulating torsion bar, the utility model relates to a high voltage isolator technical field. This novel high voltage isolator is with insulating torsion bar, including insulator spindle, axle, guiding axle, inserts and spring, the inserts has been pegged graft at the both ends of insulator spindle, the both ends interference fit of inserts and insulator spindle, the inner chamber of inserts, axle and the one end of guiding axle all are provided with the spline, the inner chamber of inserts passes through with axle, guiding axle spline fixed connection, all set up between axle and guiding axle one end and the inner chamber of inserts there is the spring, the axle all is provided with spring fit's screw hole with the one end of guiding axle, has solved the problem that high voltage isolator insulating torsion bar intensity is not high, the short running reliability of life remains the improvement.

Description

Novel insulating torsion bar for high-voltage isolating switch

Technical Field

The utility model relates to a high voltage isolator technical field specifically is a novel high voltage isolator is with insulating torsion bar.

Background

With the high-speed development of economy in China, the transmission capacity is continuously increased, the voltage grade of a transmission line is continuously improved, the space occupied by the open type combined electrical appliance is continuously increased in the past, and the available space in a city is continuously reduced, so that the closed type combined electrical appliance which is small in occupied area, reliable in operation and less in maintenance gradually replaces the open type combined electrical appliance. In a closed combined electrical appliance, an isolating switch is an important component, the isolating switch has two modes of crank arm transmission and gear transmission, wherein the space and the operation power required by the crank arm transmission are larger, the high-voltage switch with the current voltage grade of 550kV mostly adopts the gear transmission mode, and a transmission shaft in the gear transmission simultaneously needs to meet two functions of insulation and transmission, so an insulation torsion bar needs to be adopted and is generally made of an epoxy glass cloth plate which is cast by epoxy resin in vacuum. In order to reduce the manufacturing cost and increase the profit of enterprises, the insulating torsion bar is processed by adopting a mode of directly slotting on two sides, but when the insulating torsion bar works in the actual use process, the slotting part can not meet the requirements of strength and service life due to stress concentration, so that the insulating torsion bar is damaged, and therefore, the structure improvement of the insulating torsion bar and the improvement of the reliability are very necessary work.

Disclosure of Invention

Technical problem to be solved

The not enough to prior art, the utility model provides a novel high-pressure isolator is with insulating torsion bar has solved the problem that high-pressure isolator insulating torsion bar intensity is not high, the short-term operational reliability of life remains to improve.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a novel high voltage isolator is with insulating torsion bar, includes insulator spindle, axle, guiding axle, inserts and spring, it has the inserts to peg graft at the both ends of insulator spindle, the both ends interference fit of inserts and insulator spindle, the inner chamber of inserts, axle and the one end of guiding axle all are provided with the spline, the inner chamber and the axle of inserts, the guiding axle passes through spline fixed connection, all set up between axle and guiding axle one end and the inner chamber of inserts there is the spring, the axle all is provided with spring fit's screw hole with the one end of guiding axle.

Preferably, the shaft and the guide shaft are made of round steel, the insulating rod is a solid rod piece, and the insert is made of aluminum materials.

Preferably, the cavity wall of the insert is provided with an internal spline, and the outer surfaces of the guide shaft and one end of the shaft are provided with an external spline.

Preferably, the spring is in a compressed state within the cavity of the insert.

Preferably, the inner surfaces of the two ends of the insulating rod are provided with grooves matched with the inserts, and the groove walls of the grooves are subjected to surface smooth transition treatment.

(III) advantageous effects

The utility model provides a novel high voltage isolator is with insulating torsion bar. The method has the following beneficial effects:

(1) the novel insulating torsion bar for the high-voltage isolating switch is manufactured by round steel through the shaft and the guide shaft, so that the strength of the shaft and the guide shaft can be completely ensured; the insulating rod with a solid structure is adopted to replace the existing insulating rod with a hollow structure, so that the service life of the insulating rod can be prolonged; through adopting the aluminum product to make with the inserts, can realize lightening the purpose of whole insulator spindle weight under the prerequisite that satisfies intensity. The inserts are connected with the shafts and the guide shafts through the splines, so that the contact area between the keys can be effectively increased, the force transmitted between the inserts is more uniform when the shafts and the guide shafts are stressed, the joints of the shafts, the guide shafts and the inserts can bear larger load, and the stability of the whole insulating rod during use is improved.

(2) This novel high voltage is insulating torsion bar for isolator through the recess with the insulator spindle both ends through smooth processing, can be convenient for follow-up interference plug fit to inserts and insulator spindle. All be provided with the spring through axle, guiding axle and the middle of the inserts junction, the spring is in compression state after the assembly is accomplished, and the spring can be fully all the time and inserts and axle contact under the effect of resilience force, guarantees that inserts and axle have good electric contact all the time when the contact of spline contact surface is not abundant, guarantees both sides equipotential all the time. The stability of insulator spindle when using is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1 axle, 2 inserts, 3 springs, 4 insulating rods and 5 guide axles.

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.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a novel high pressure is insulating torsion bar for isolator, including insulator spindle 4, axle 1, guiding axle 5, inserts 2 and spring 3, it has inserts 2 to peg graft at the both ends of insulator spindle 4, inserts 2 and insulator spindle 4's both ends interference fit, inserts 2's inner chamber, axle 1 all is provided with the spline with the one end of guiding axle 5, inserts 2's inner chamber and axle 1, guiding axle 5 passes through spline fixed connection, all be provided with spring 3 between axle 1 and 5 one end of guiding axle and the inner chamber of inserts 2, axle 1 all is provided with 3 complex screw holes of spring with the one end of guiding axle 5.

In this embodiment, axle 1 all adopts the round steel to make with guiding axle 5, and insulator spindle 4 is solid member, and inserts 2 adopts the aluminum product to make. The shaft 1 and the guide shaft 5 are made of round steel, so that the strength of the shaft 1 and the guide shaft 5 can be completely ensured; the insulating rod 4 with a solid structure is adopted to replace the existing insulating rod 4 with a hollow structure, so that the service life of the insulating rod 4 can be prolonged; through making inserts 2 adopt the aluminum product, can realize lightening the purpose of whole insulator spindle 4 weight under the prerequisite that satisfies intensity.

In this embodiment, the cavity wall of the insert 2 is provided with an internal spline, and the outer surfaces of the guide shaft 5 and one end of the shaft 1 are provided with an external spline. Insert 2 is connected through spline and axle 1 and guiding axle 5, can effectively increase area of contact between the key for when axle 1 and guiding axle 5 atress, the power of transmission between to insert 2 is more even, makes axle 1, guiding axle 5 and insert 2's junction can bear bigger load, improves the stability when whole insulator spindle 4 uses.

In this embodiment, the spring 3 is in a compressed state in the cavity of the insert 2. All be provided with spring 3 through axle 1, guiding axle 5 and 2 junctions of inserts in the middle of, spring 3 is in compression state after the assembly is accomplished, and spring 3 can be fully all the time and inserts 2 and axle 1 contact under the effect of resilience force, guarantees that inserts 2 and axle 1 have good electric contact all the time when the contact of spline contact surface is insufficient, guarantees both sides equipotential all the time.

In this embodiment, the inner surfaces of the two ends of the insulating rod 4 are provided with grooves matched with the inserts 2, and the groove walls of the grooves are subjected to surface smooth transition treatment. Through the recess with insulator spindle 4 both ends through smooth processing, can be convenient for follow-up interference grafting cooperation to inserts 2 and insulator spindle 4. When the insulating rod works, the inner surfaces of the left side and the right side of the insulating rod 4 are processed to be in smooth transition, then the inserts 2 are pressed in the left side and the right side of the insulating rod 4 through certain pressure, so that the interference fit between the insulating rod 4 and the inserts 2 is realized, wherein the inserts 2 are made of aluminum, and the purpose of reducing weight can be realized while the strength is met through testing; placing a spring 3 at one side of a smaller threaded hole of the shaft 1, smearing a small amount of silicone grease for fixing, and then matching and assembling an external spline of the shaft 1 and an internal spline of the insert 2; placing the spring 3 at one side of the smaller threaded hole of the guide shaft 5, coating a small amount of silicone grease for fixing, and then matching and assembling the external spline of the guide shaft 5 and the internal spline of the insert 2; after the whole assembly is finished, the springs 3 on the two sides are kept in a certain compression amount to be in full contact with the insert 2, the shaft 1 and the guide shaft 5, and the insulating rod 4 is assembled through the steps. Whole insulator spindle 4 intensity is higher, and life extension effectively improves the stability ability when insulator spindle 4 moves simultaneously.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

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 (5)

1. The utility model provides a novel high voltage isolator is with insulating torsion bar, includes insulator spindle (4), axle (1), guiding axle (5), inserts (2) and spring (3), its characterized in that: inserts (2) are inserted at the two ends of insulator spindle (4), the both ends interference fit of inserts (2) and insulator spindle (4), the inner chamber of inserts (2), axle (1) and the one end of guiding axle (5) all are provided with the spline, the inner chamber of inserts (2) passes through with axle (1), guiding axle (5) spline fixed connection, all be provided with between the inner chamber of axle (1) and guiding axle (5) one end and inserts (2) spring (3), the one end of axle (1) and guiding axle (5) all is provided with spring (3) complex screw hole.

2. The novel insulating torsion bar for the high-voltage isolating switch according to claim 1, characterized in that: the shaft (1) and the guide shaft (5) are made of round steel, the insulating rod (4) is a solid rod piece, and the insert (2) is made of aluminum materials.

3. The novel insulating torsion bar for the high-voltage isolating switch according to claim 1, characterized in that: the cavity wall of inserts (2) is provided with the internal spline, the surface of guiding axle (5) and axle (1) one end is provided with the external spline.

4. The novel insulating torsion bar for the high-voltage isolating switch according to claim 1, characterized in that: the spring (3) is in a compressed state in the inner cavity of the insert (2).

5. The novel insulating torsion bar for the high-voltage isolating switch according to claim 1, characterized in that: the inner surfaces of the two ends of the insulating rod (4) are provided with grooves matched with the inserts (2), and the groove walls of the grooves are subjected to surface smooth transition treatment.

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