CN217641103U - Totally-insulated closed isolating switch - Google Patents

Abstract

The application discloses closed isolator of all insulation belongs to switchgear technical field for provide the closed isolator of all insulation that the operational safety nature is higher, including a pair of two contact seats that set up on the insulator, two be provided with contact mechanism between the contact seat, contact mechanism covers outward and has the protection casing, the protection casing is provided with switch handle outward, switch handle is used for driving contact mechanism and moves for the contact seat. According to the isolating switch, the switch blade of the isolating switch is designed into the slider-crank mechanism, so that the action amplitude of switching on and switching off the isolating switch is greatly reduced, the contact seat and the switch blade can be arranged in an insulating cover with a small volume, the metal part of the isolating switch is not exposed any more, and the contact risk of the isolating switch is reduced; by designing the switch handle made of an insulating material outside the shield, the on-off operation can be performed very safely even in the case of power-on.

Description

Totally-insulated closed isolating switch

Technical Field

The application relates to the technical field of switchgear, in particular to a full-insulation closed isolating switch.

Background

Disconnectors are commonly found in power transmission systems, and are generally operated only in the event of a power failure because they do not have an arc extinguishing function, and are generally designed to be exposed, and it is safe to directly contact the metal parts of the disconnector in the event of a power failure, but they are very dangerous in the event of a power failure.

The existing disconnecting switch generally has at least one insulating part reserved, and can be realized by acting on the insulating part when the disconnecting switch needs to be pulled off in an emergency, but most electrified alloy parts of the disconnecting switch still have high danger and are not suitable for directly pulling off the disconnecting switch under the power-on condition.

Disclosure of Invention

The purpose of the application is to provide a fully insulated closed disconnector with higher operational safety.

In order to achieve the above object, the present application provides a fully insulated closed type disconnecting switch: the insulator comprises a pair of two contact seats arranged on an insulator, wherein a contact mechanism is arranged between the two contact seats, a protective cover covers the contact mechanism, a switch handle is arranged outside the protective cover and used for driving the contact mechanism to move relative to the contact seats, the on-off operation of the isolating switch can be operated from the outside of the protective cover, and the safety of operating the isolating switch under the power-on condition is greatly improved.

Preferably, the end parts of the two insulators are fixedly connected with a first contact seat and a second contact seat respectively, the first contact seat is rotatably connected with the contact mechanism, the second contact seat is suitable for being electrically connected with the first contact seat through the contact mechanism, and the contact mechanism is used for connecting the two contact seats in an overlapping mode to achieve electrification.

Preferably, the contact mechanism comprises a driving rotating arm, a following rotating arm and a push-pull contact handle, one end of the driving rotating arm is rotatably connected with the first contact seat through a rotating shaft, the other end of the driving rotating arm is rotatably connected with the following rotating arm through an articulated shaft, one end of the following rotating arm, which is far away from the driving rotating arm, is rotatably connected with the push-pull contact handle through another articulated shaft, the driving rotating arm, the following rotating arm, the push-pull contact handle and the articulated shaft are made of metal materials, lubricating oil is not arranged on the articulated shaft, the conductivity of the joint is ensured, and the push-pull contact handle is movably matched with the protective cover and used for limiting the freedom degree of movement of the contact mechanism so that the contact has the function of a slider-crank mechanism.

Preferably, a guide sliding strip is arranged on the side face of the push-pull contact handle, a guide sliding groove is formed in the inner side wall of the protective cover, and the guide sliding strip is arranged in the guide sliding groove to form a sliding pair and used for ensuring the stability of the push-pull contact handle relative to the protective cover during movement.

Preferably, the side surface of the driving rotating arm is provided with a fitting groove, when the following rotating arm rotates to approach the driving rotating arm, the following rotating arm is embedded into the fitting groove, so that the motion interference is reduced, and the smoothness of components in the contact mechanism during motion is improved.

Preferably, the rotating shaft penetrates through a shaft hole formed in the protective cover and then is fixedly connected with the switch handle, and the rotating shaft is rotatably connected with the protective cover to form a rotating pair, so that a gap between the inside of the protective cover and the outside can be effectively reduced.

Preferably, the outer side surface of the protective cover is provided with a limiting groove, and the limiting groove is used for limiting the maximum rotation range of the switch handle and avoiding the contact mechanism from impacting the inner wall of the protective cover.

Preferably, the protective cover and the switch handle are made of insulating fireproof materials, the metal contact mechanism is completely covered in the protective cover, the isolating switch is directly contacted from the outside, the electric shock hazard is avoided, the two insulators are connected to the same connecting plate and used for fixing the whole isolating switch to the mounting frame, the protective cover is fixedly connected to the insulators, and the metal part originally exposed at the end part of each insulator is completely wrapped in the corresponding insulator.

Compared with the prior art, the beneficial effect of this application lies in:

(1) The knife switch of the isolating switch is designed into a crank slider mechanism, so that the action amplitude of switching on and switching off of the isolating switch is greatly reduced, the contact seat and the knife switch can be arranged in an insulating cover with a small volume, the metal part of the isolating switch is not exposed any more, and the contact risk of the isolating switch is reduced;

(2) The switch handle made of the insulating material is designed outside the protective cover, the switch structure inside the protective cover can be operated from the outside of the protective cover through the switch handle, the operation safety of the isolating switch is further improved, and the on-off operation can be carried out very safely even under the power-on condition.

Drawings

Fig. 1 is a perspective view of the general assembly structure of the totally insulated enclosed type disconnecting switch;

fig. 2 is a functional structure perspective view of the totally-insulated enclosed isolating switch;

FIG. 3 is a structural diagram of a contact seat of the totally-insulated enclosed isolating switch;

fig. 4 is a perspective view of a contact mechanism of the totally-insulated enclosed type disconnecting switch;

fig. 5 is a perspective sectional view of a shield of the all-insulated closed type disconnecting switch.

In the figure: 1. a protective cover; 101. a guide chute; 102. a limiting groove; 2. a switch handle; 3. an insulator; 4. a connecting plate; 5. a first contact base; 6. a second contact base; 7. an active rotating arm; 701. fitting the groove; 8. a following rotating arm; 9. a push-pull contact handle; 901. a guide slider; 10. hinging a shaft; 11. a rotating shaft.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments described below or between the technical features may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The fully insulated closed isolating switch shown in fig. 1-5 comprises a pair of two contact seats arranged on an insulator 3, a contact mechanism is arranged between the two contact seats, the contact mechanism can bridge the two contact seats to electrify the two contact seats, the end parts of the two insulators 3 are respectively and fixedly connected with a first contact seat 5 and a second contact seat 6, the two contact seats are independent and separated, bridging can be realized only through the contact mechanism, the first contact seat 5 is rotatably connected with the contact mechanism and is used for limiting the freedom degree of the contact mechanism, the second contact seat 6 is suitable for being electrically connected with the first contact seat 5 through the contact mechanism to realize the opening function of the isolating switch, the contact mechanism comprises an active rotating arm 7, a following rotating arm 8 and a push-pull contact handle 9, one end of the active rotating arm 7 is rotatably connected with the first contact seat 5 through a rotating shaft 11, the other end of the active rotating arm 7 is rotatably connected with the following rotating arm 8 through a hinge shaft 10, one end of the following rotating arm 8 far away from the active rotating arm 7 is rotatably connected with the push-pull contact handle 9 through another hinge shaft 10, the push-pull contact handle 9 is movably matched with a protective cover 1 to form a crank block mechanism, when the active rotating arm 7 rotates, the active rotating arm 7 can drive the second contact seat to slide to the second contact seat to realize the sliding contact mechanism, and the second contact seat to slide to open the second contact handle 6 to realize the sliding contact mechanism, and the sliding contact mechanism.

The contact mechanism is covered with a protective cover 1, the protective cover 1 is used for sealing a contact mechanism and a contact seat which have electricity, the protective cover 1 is made of insulating fireproof materials, the protective cover 1 is generally made of bakelite, the protective cover 1 has good insulating property and can effectively prevent the electricity leakage of the contact mechanism and the contact seat which have electricity, the side surface of the push-pull contact handle 9 is provided with a guide sliding strip 901, the inner side wall of the protective cover 1 is provided with a guide sliding groove 101, the guide sliding strip 901 is arranged in the guide sliding groove 101 to form a sliding pair and used for limiting the movement freedom degree of the push-pull contact handle 9 and ensuring the stability of the push-pull contact handle when sliding, the side surface of the active rotating arm 7 is provided with an engagement groove 701, when the following rotating arm 8 rotates to be close to the active rotating arm 7, the following rotating arm 8 can be embedded into the engagement groove 701, the movement interference when the active rotating arm 7 and the following rotating arm 8 rotate relatively is avoided, and the smoothness of the movement process is ensured.

The protection casing 1 is provided with switch handle 2 outward, just can operate confined isolator from the outside like this, switch handle 2 adopts insulating refractory material to make, equally avoid the electric shock, equally be that pivot 11 passes behind the shaft hole of seting up on the protection casing 1 with switch handle 2 fixed connection, switch handle 2 can directly drive pivot 11 and realize rotating, pivot 11 rotates with protection casing 1 and is connected, the two complex turning gap is very little, and it has lubricating grease to lead to the groove meeting skylight, so can guarantee isolator's closure well, switch handle 2 is used for driving contact mechanism and moves for the contact seat, switch handle 2's rotation can be converted into push-and-pull contact handle 9 gliding movement through the slider-crank mechanism of contact, spacing groove 102 has been seted up to the lateral surface of protection casing 1, spacing groove 102 is used for limiting switch handle 2's maximum rotation range, prevent switch handle 2's turned angle is too big, and let contact mechanism striking protection casing 1's inner wall.

Two insulators 3 are connected on same connecting plate 4, and connecting plate 4 generally adopts the channel-section steel, conveniently is connected with the switchgear frame, and 1 fixed connection of protection casing wraps up the metal part whole of insulator 3 upper end on insulator 3.

The structure function principle of the all-insulation closed isolating switch is as follows: compare in the action that traditional isolator plug-in strip directly rotated to open and shut, this scheme designs into slider-crank mechanism with the structure of plug-in strip, just can realize opening and closing of isolator in littleer activity space, because the action range of switch is littleer, so with the contact mechanism design of whole activity just become simpler at insulating confined protection casing 1, not only improve isolator's safety in utilization, still can not excessively increase whole isolator's volume.

The foregoing has described the principles, principal features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and such changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims (8)

1. The utility model provides a totally enclosed isolator which characterized in that: the insulator contact structure comprises a pair of two contact seats arranged on an insulator, wherein a contact mechanism is arranged between the two contact seats, a protective cover covers the contact mechanism, a switch handle is arranged outside the protective cover, and the switch handle is used for driving the contact mechanism to move relative to the contact seats.

2. The totally enclosed isolator switch according to claim 1, wherein: the end parts of the two insulators are fixedly connected with a first contact seat and a second contact seat respectively, the first contact seat is rotatably connected with the contact mechanism, and the second contact seat is suitable for being electrically connected with the first contact seat through the contact mechanism.

3. The totally enclosed isolating switch according to claim 2, characterized in that: the contact mechanism comprises a driving rotating arm, a following rotating arm and a push-pull contact handle, one end of the driving rotating arm is rotatably connected with the first contact seat through a rotating shaft, the other end of the driving rotating arm is rotatably connected with the following rotating arm through a hinge shaft, one end, far away from the driving rotating arm, of the following rotating arm is rotatably connected with the push-pull contact handle through another hinge shaft, and the push-pull contact handle is movably matched with the protective cover.

4. The totally enclosed isolating switch according to claim 3, characterized in that: the side of the push-pull contact handle is provided with a guide sliding strip, the inner side wall of the protective cover is provided with a guide sliding groove, and the guide sliding strip is arranged in the guide sliding groove to form a sliding pair.

5. The totally enclosed isolating switch according to claim 3, characterized in that: and when the following rotating arm rotates to be close to the driving rotating arm, the following rotating arm can be embedded into the fitting groove.

6. The totally enclosed isolating switch according to claim 3, characterized in that: the rotating shaft penetrates through a shaft hole formed in the protective cover and then is fixedly connected with the switch handle, and the rotating shaft is rotatably connected with the protective cover.

7. The totally enclosed isolating switch according to claim 6, characterized in that: the lateral surface of protection casing has seted up the spacing groove, the spacing groove is used for the restriction the maximum rotation range of switch handle.

8. The totally-insulated enclosed isolating switch according to claim 1, characterized in that: the protection cover and the switch handle are made of insulating refractory materials, the two insulators are connected to the same connecting plate, and the protection cover is fixedly connected to the insulators.

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