CN220672378U - High-integration combined electrical appliance - Google Patents

Abstract

The utility model relates to the technical field of high-voltage electrical equipment, in particular to a high-integration combined electrical appliance, wherein a high-voltage transformer of an isolating switch comprises a high-voltage bin body, an insulating core body and conductors, wherein the insulating core body is wrapped outside the conductors and is positioned in the high-voltage bin body, coils can be sleeved outside the insulating core body according to requirements and can be connected with outgoing lines to realize the function of the current transformer, the insulating core body can be provided with a voltage-sharing capacitor C1 and a voltage-sharing capacitor C2 according to requirements, the voltage-sharing capacitor C1 and the voltage-sharing capacitor C2 are connected in series to form a first capacitor voltage divider, the outgoing lines can be connected with the outgoing lines to realize the function of the voltage transformer, each outgoing line is connected with a lead shielding pipe which is wrapped by a composite sleeve and extends into the high-voltage bin body, the conductors are connected with a contact circuit of the isolating switch in series, and glue insulating materials are filled in the high-voltage bin body; the high-integration combined electrical apparatus occupies a small space.

Description

High-integration combined electrical appliance

Technical Field

The utility model relates to the technical field of high-voltage electrical equipment, in particular to a high-integration combined electrical appliance.

Background

The prior isolating switch is characterized in that a voltage transformer, a current transformer and a lightning arrester are generally arranged respectively, and independent air bins are arranged, so that the isolating switch has the advantages of huge volume, high air consumption, low cost performance and inconvenient maintenance; for example, the coil of the independent current transformer is sleeved outside the conductor, and the coil and the conductor are required to keep a larger interval due to high voltage, so that the volume is huge, the power consumption is high, the diameter of the independent air bin is greatly increased, the cost is high, and the occupied area is large. For example, chinese patent CN102931589a discloses a 35KV intelligent open type combined electrical apparatus, which includes a disconnecting switch.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a high-integration combined electrical appliance which occupies a small space.

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

the high-integration combined electrical appliance comprises an isolating switch, wherein the isolating switch comprises a contact circuit, the contact circuit comprises a moving contact structure and at least one group of first fixed contacts, the moving contact structure comprises at least one group of first moving contacts, and the moving contact structure rotates to enable the first moving contacts and the first fixed contacts to be closed and disconnected;

the isolating switch further comprises at least one group of high-voltage transformers, each high-voltage transformer comprises a high-voltage bin body, an insulating core body and a conductor, the insulating core body is positioned in the high-voltage bin body, the insulating core body is coated outside the conductor, and a plurality of first capacitance screens which are alternately arranged with the insulating layers along the radial direction of the conductor are arranged in the insulating core body; in the insulating core, the first capacitance screen at the outermost side is a first grounding electricity Rong Bing used for grounding; the conductor is connected with the contact circuit in series; the rest space of the high-voltage bin body is filled with colloidal insulating materials;

the plurality of first capacitive screens includes a first voltage-equalizing capacitive screen for forming a voltage-equalizing capacitance C1; the isolating switch further comprises a coil sleeved outside the insulating core body, and the coil is connected with the outgoing line through a lead shielding pipe which is coated with the composite sleeve and stretches into the high-voltage bin body and is used for realizing the function of the current transformer.

The high-integration combined electrical appliance comprises an isolating switch, wherein the isolating switch comprises a contact circuit, the contact circuit comprises a moving contact structure and at least one group of first fixed contacts, the moving contact structure comprises at least one group of first moving contacts, and the moving contact structure rotates to enable the first moving contacts and the first fixed contacts to be closed and disconnected;

the isolating switch further comprises at least one group of high-voltage transformers, each high-voltage transformer comprises a high-voltage bin body, an insulating core body and a conductor, the insulating core body is positioned in the high-voltage bin body, the insulating core body is coated outside the conductor, and a plurality of first capacitance screens which are alternately arranged with the insulating layers along the radial direction of the conductor are arranged in the insulating core body; in the insulating core, the first capacitance screen at the outermost side is a first grounding electricity Rong Bing used for grounding; the conductor is connected with the contact circuit in series; the rest space of the high-voltage bin body is filled with colloidal insulating materials;

the voltage-sharing capacitor C1 and the voltage-dividing capacitor C2 are connected in series to form a first capacitor voltage divider, and the first capacitor voltage divider is connected with an outgoing line through a lead shielding pipe which is wrapped with a composite sleeve and stretches into the high-voltage bin body and used for realizing the function of a voltage transformer.

The high-integration combined electrical appliance comprises an isolating switch, wherein the isolating switch comprises a contact circuit, the contact circuit comprises a moving contact structure and at least one group of first fixed contacts, the moving contact structure comprises at least one group of first moving contacts, and the moving contact structure rotates to enable the first moving contacts and the first fixed contacts to be closed and disconnected;

the isolating switch further comprises at least one group of high-voltage transformers, each high-voltage transformer comprises a high-voltage bin body, an insulating core body and a conductor, the insulating core body is positioned in the high-voltage bin body, the insulating core body is coated outside the conductor, and a plurality of first capacitance screens which are alternately arranged with the insulating layers along the radial direction of the conductor are arranged in the insulating core body; in the insulating core, the first capacitance screen at the outermost side is a first grounding electricity Rong Bing used for grounding; the conductor is connected with the contact circuit in series; the rest space of the high-voltage bin body is filled with colloidal insulating materials;

the plurality of first capacitance screens comprise a first voltage-sharing capacitance screen for forming a voltage-sharing capacitance C1 and a first voltage-dividing capacitance screen for forming a voltage-dividing capacitance C2, the voltage-sharing capacitance C1 and the voltage-dividing capacitance C2 are connected in series to form a first capacitance voltage divider, and the capacitance voltage divider is used for realizing the function of a voltage transformer by wrapping a composite sleeve and extending into a lead shielding pipe outgoing line in a high-voltage bin body; the isolating switch further comprises a coil sleeved outside the insulating core body, and the coil is connected with an outgoing line through a lead shielding pipe and used for realizing the function of the current transformer.

Further, the isolating switch further comprises a transmission pillar and at least one insulation pillar, the insulation pillar and the transmission pillar are arranged at intervals side by side, the first moving contact is arranged at the top end of the transmission pillar and synchronously rotates along with the transmission pillar, and the top end of the insulation pillar is provided with a first fixed contact;

the high-voltage bin body is arranged at the top end of the transmission support column, the conductor is connected with the first moving contact, and the transmission support column comprises a composite sleeve and a lead shielding pipe;

or the high-voltage bin body is arranged at the top end of an insulating upright post and is connected with the corresponding first fixed contact, and the insulating upright post comprises a composite sleeve and a lead shielding pipe.

Further, the isolating switch comprises two insulating stand columns, the contact circuit comprises two groups of first fixed contacts, the moving contact structure comprises two groups of first moving contacts, the high-voltage bin body is arranged at the top end of the transmission stand column, the conductors are connected between the two groups of first moving contacts in series, the two insulating stand columns are arranged side by side at intervals and are provided with the transmission stand column therebetween, the two groups of first fixed contacts are respectively arranged at the top ends of the two insulating stand columns, and the high-voltage bin body is arranged at the top ends of the transmission stand column and synchronously rotates along with the transmission stand column to drive the two groups of first moving contacts and the first fixed contacts to be closed and disconnected through the conductors.

Further, the transmission pillar still includes pillar silica gel umbrella skirt, pillar base, rotary operating mechanism and secondary terminal box, and outside the composite sleeve is established to pillar silica gel umbrella skirt cover, and transmission pillar lower extreme rotates and sets up on the pillar base, and the secondary terminal box sets up on the pillar base and links to each other with the lead-out wire in the lead wire shielding pipe, and rotary operating mechanism links to each other with the transmission pillar transmission and drives its rotation.

Further, the isolating switch further comprises a base, the lower end of the insulating upright post is fixedly arranged on the base, and the lower end of the transmission upright post is rotatably arranged on the base.

Further, the composite sleeve is a capacitive sleeve, and comprises a capacitive insulating core body sleeved outside the lead shielding pipe, wherein the capacitive insulating core body comprises a main capacitor group arranged in the capacitive insulating core body, and the main capacitor group comprises a plurality of second capacitor screens alternately arranged along the radial direction of the lead shielding pipe and an insulating layer.

Further, at least one insulating column is a capacitive insulating column, the capacitive insulating column comprises a second insulating core body, and a plurality of fourth capacitive screens which are alternately arranged around the insulating layer along the radial direction of the second insulating core body are arranged in the second insulating core body;

the second insulating core body is internally provided with a lightning arrester component, the lightning arrester component comprises zinc oxide valve plates, a plurality of zinc oxide valve plates are arranged in the cavity of the second insulating core body in a laminated mode, and the lightning arrester component is electrically connected with a static contact at the top end of the capacitive insulating support through a conductor.

Further, the high-integration combined electrical apparatus further comprises a circuit breaker, wherein the circuit breaker comprises a circuit breaker insulating sleeve, a second fixed contact and a second moving contact which are arranged in the circuit breaker insulating sleeve, a flow guide soft connection and a circuit breaker operating mechanism; the circuit breaker insulating sleeve bottom links to each other with the top fixed of an insulating stand, and this insulating stand is the support stand, and the first stationary contact on second moving contact and the support stand top is connected to the flexible coupling that flows backwards, and circuit breaker operating device includes insulating pull rod and divide-shut brake drive, and the divide-shut brake drive sets up in the bottom of support stand, and insulating pull rod one end links to each other with second moving contact transmission, and the other end passes the back from the support stand middle part and links to each other with divide-shut brake drive transmission.

The high-integration combined electrical appliance has the advantages that the voltage transformer function of the high-voltage transformer is realized by the capacitor formed by the first capacitor screen in the insulating core body, the power consumption is low, the occupied volume is small, and the insulating layer of the insulating core body and the colloidal insulating material jointly form insulating protection for the voltage transformer, so that the distance between the high-voltage transformer and a contact circuit can be reduced, and the required installation space of the isolating switch is reduced; the current transformer function of the high-voltage transformer is that the hollow coil is tightly attached to the outer side of the ground potential of the insulating core body and used as the coil, the fourth outgoing line is connected to the hollow coil and used as a signal source of the current transformer, and the hollow coil can be tightly sleeved on the outer side of the ground potential of the insulating core body, so that the overall diameter is greatly reduced. In addition, the ground potential is realized in the high-voltage bin body through the insulating core body, so that an electronic low-power hollow coil can be arranged, the volume is greatly reduced, the volume and the weight are only a few tenths of those of a traditional ferromagnetic coil, and the whole insulating bin is smaller in appearance; and the high-voltage bin body is filled with the colloidal insulating material for insulation, so that the high-voltage bin is free of air and oil, convenient to maintain and low in cost.

In addition, the high-voltage bin body is arranged at the top end of the transmission support column and comprises a composite sleeve and a lead shielding pipe, or the high-voltage bin body is arranged at the top end of an insulating upright column and comprises the composite sleeve and the lead shielding pipe, the number of parts of the isolating switch is reduced in any mode, the distance between the insulating upright column and the transmission support column is reduced, and therefore the installation space required by the isolating switch is reduced. For example, the high-voltage bin body of the high-voltage transformer is high voltage instead of ground potential, and the first fixed contacts on the two insulating upright posts are also high voltage, so that a large insulating distance is not needed between the high-voltage transformer and the first fixed contacts, the whole volume of the isolating switch is reduced, and the occupied area is smaller.

Drawings

FIG. 1 is a schematic perspective view of a high-integration electrical apparatus according to the present utility model;

FIG. 2 is a schematic cross-sectional view of a high-integration electrical apparatus according to the present utility model;

fig. 3 is a schematic diagram of an assembled structure of the transmission support, the high-voltage transformer and the first moving contact according to the present utility model.

Attached drawings and description

2a first moving contact; 5 a circuit breaker; 6, a lead shielding tube; 7, a composite sleeve; 8 pillar silica gel umbrella skirt; 10 insulating columns; 11 wiring terminals; 12 a first stationary contact; 31 a transmission strut; 32 rotating an operating mechanism; a 33 post base; 34 secondary junction boxes; 40 capacitor type insulating support posts; 41 a second insulating core; 46 zinc oxide valve plate; 49 monitoring terminals; 50 a second fixed contact; 51 a second moving contact; 52 breaker insulating sleeve; 53 breaker operating mechanism; 53-0 insulating pull rod; 53-1 opening and closing drive; 54, flow guiding soft connection; 55 supporting columns; 71 a capacitive insulating core; 71-0 main capacitor bank; 71-00 second partial voltage Rong Bing; 71-01 main capacitive screen; 71-1 a second shielding capacitor group; 72 composite sleeve insulating umbrella skirt;

a high voltage transformer; 1a, a high-pressure bin body; 2a an insulating core; a 3a conductor; a 4a coil; 82a first ground power Rong Bing; 83a first voltage-equalizing capacitive screen; 84a first voltage dividing capacitive screen.

Detailed Description

The following examples are given in connection with the drawings of the specification to further illustrate specific embodiments of the high-integration combined electrical apparatus of the present utility model. The high integration combined electrical apparatus of the present utility model is not limited to the description of the following embodiments.

As shown in fig. 1-2, a first embodiment of the high-integration combined electrical apparatus of the present utility model is shown.

The high-integration combined electrical appliance comprises an isolating switch, wherein the isolating switch comprises a contact circuit, the contact circuit comprises a moving contact structure and at least one group of first fixed contacts 12, the moving contact structure comprises at least one group of first moving contacts 2, and the moving contact structure rotates to enable the first moving contacts 2 and the first fixed contacts 12 to be closed and disconnected, namely, the isolating switch is switched on and off; the isolating switch further comprises at least one group of high-voltage transformers a, each high-voltage transformer a comprises a high-voltage bin body 1a, an insulating core body 2a and a conductor 3a, the insulating core body 2a is positioned in the high-voltage bin body 1a, the insulating core body 2a is coated outside the conductor 3a and is internally provided with a plurality of first capacitance screens which are alternately wound with the insulating layer along the radial direction of the conductor 3 a; in the insulating core 2a, the first capacitive screen of the outermost layer (referred to as the first capacitive screen farthest from the conductor 3a in the radial direction of the conductor 3 a) is the first grounded capacitive screen 82a for grounding; the conductor 3a is connected in series with the contact circuit; the rest space of the high-voltage bin body 1a is filled with colloidal insulating materials; the first capacitance screens are used for forming a first voltage-sharing capacitance screen 83a of the voltage-sharing capacitance C1 and a first voltage-dividing capacitance screen 84a used for forming the voltage-dividing capacitance C2, the voltage-sharing capacitance C1 and the voltage-dividing capacitance C2 are connected in series to form a first capacitance voltage divider, and the first capacitance voltage divider is connected with a lead through a lead shielding pipe 6 which is coated with a composite sleeve 7 and stretches into the high-voltage bin body 1a to be connected with a lead, so that the function of a voltage transformer is realized.

The voltage transformer of the isolating switch of the high-integration combined electrical appliance is realized by a capacitor formed by the first capacitor screen in the insulating core body, the power consumption is small, the occupied volume is small, and the insulating layer of the insulating core body and the colloidal insulating material jointly form insulating protection for the voltage transformer, so that the distance between the high-voltage transformer and a contact circuit can be reduced, and the required installation space of the isolating switch is reduced; and the high-voltage bin body is filled with the colloidal insulating material for insulation, so that the high-voltage bin is free of air and oil, convenient to maintain and low in cost.

Referring to fig. 1-2, in the high-integration combined electrical apparatus of this embodiment, the isolating switch further includes a transmission pillar 31 and at least one insulation pillar 10, the insulation pillar 10 and the transmission pillar 31 are arranged at intervals side by side, the first moving contact 2 is arranged at the top end of the transmission pillar 31 and synchronously rotates along with the transmission pillar, and the top end of the insulation pillar 10 is provided with the first fixed contact 12.

As shown in fig. 1-2, the high-voltage bin body 1a is arranged at the top end of the transmission pillar 31, the conductor 3a is connected with the first movable contact 2, the transmission pillar 31 comprises a composite sleeve 7 and a lead shielding tube 6, and the transmission pillar 31 is preferably composed of the composite sleeve 7 and the lead shielding tube 6; alternatively, the high-voltage bin body 1a is arranged at the top end of an insulating upright post 10 and is connected with the corresponding first fixed contact 12, the insulating upright post 10 comprises a composite sleeve 7 and a lead shielding tube 6, and the insulating upright post 10 is preferably composed of the composite sleeve 7 and the lead shielding tube 6. The high-voltage transformer a is arranged in any mode, so that the number of parts of the isolating switch is reduced, the distance between the insulating upright post 10 and the transmission support post 31 is reduced, and the installation space required by the isolating switch is reduced. In the high-integration combined electrical apparatus of this embodiment, the high-voltage transformer a of the isolating switch is preferably arranged in a first mode, that is, in a mode that the high-voltage bin body 1a is arranged at the top end of the transmission support column 31.

Specifically, as shown in fig. 1-3, the isolating switch of the high-integration combined electrical appliance of the embodiment comprises two insulating columns 10, the contact circuit comprises two groups of first fixed contacts 12, the moving contact structure comprises two groups of first moving contacts 2, the high-voltage bin body 1a is arranged at the top end of the transmission column 31, the conductor 3a is connected between the two groups of first moving contacts 2 in series, the two insulating columns 10 are arranged side by side at intervals, and the transmission column 31 is arranged between the two insulating columns 10, that is, the two insulating columns 10 and the transmission column 31 are arranged side by side at intervals, the two groups of first fixed contacts 12 are respectively arranged at the top ends of the two insulating columns 10, and the high-voltage bin body 1a is arranged at the top end of the transmission column 31 and synchronously rotates along with the two groups of first moving contacts 2 and the first fixed contacts 12 are driven to be closed and disconnected through the conductor 3 a. Further, the conductor 3a and the first moving contact 2 may be in an integral structure; alternatively, the conductor 3a is detachably connected to the first movable contact 2. Further, both ends of the conductor 3a are protruded outside the high-voltage chamber body 1a for connection with an external circuit. The isolating switch is used as a double-breakpoint isolating switch and is suitable for high voltage of 110KV and above, and is certainly applicable to high voltage of 10KV or 35 KV. The high-voltage bin body 1a of the high-voltage transformer a is high voltage instead of ground potential, and the first fixed contacts 12 on the two insulating upright posts 10 are also high voltage, so that a large insulating distance is not needed between the high-voltage transformer a and the first fixed contacts 12, the whole size of the isolating switch is reduced, and the occupied area is smaller.

As shown in fig. 1-2, in the high-integration combined electrical apparatus of this embodiment, the two insulating columns 10 and the transmission column 31 of the isolating switch are equidistantly arranged side by side at intervals.

As other embodiments, when the high voltage bin 1a is disposed on an insulating column 10, the two first moving contacts 2 may be directly replaced by an integral structure, or the two first moving contacts 2 may be directly or indirectly detachably connected together.

As shown in fig. 3, in the insulating core 2a, a first voltage-equalizing capacitive screen 83a, a first voltage-dividing capacitive screen 84a, and a first grounding capacitive screen 82a are sequentially arranged from inside to outside along the radial direction of the conductor 3; among the plurality of first voltage-equalizing capacitive screens 83a, the innermost first voltage-equalizing capacitive screen 83a, that is, the innermost first capacitive screen, is a first high-voltage power Rong Bing, the first high-voltage power Rong Bing is electrically connected with the conductor 3a to form an equipotential, the plurality of first voltage-equalizing capacitive screens 83a are sequentially and alternately arranged with an insulating layer along the radial direction of the conductor 3a to form a voltage-equalizing capacitor C1, and the plurality of first voltage-equalizing capacitive screens 83a divide and insulate the high voltage step by step along the radial direction of the conductor 3a to perform an insulating function; the plurality of first voltage-dividing capacitive screens 84a are located between the first voltage-dividing capacitive screen 83a and the first ground power Rong Bing a, the first voltage-dividing capacitive screen 84a may be one or more, one first voltage-dividing capacitive screen 84a and the first ground capacitive screen 82a form a voltage-dividing capacitor C2 or the plurality of first voltage-dividing capacitive screens 84a form a voltage-dividing capacitor C2, the voltage-dividing capacitor C1 and the voltage-dividing capacitor C2 are connected in series to form a first capacitive voltage divider, and an outgoing line from the voltage-dividing capacitor C1 and the voltage-dividing capacitor C2 is a first outgoing line, and is used as a signal source of a voltage transformer, thereby realizing a voltage transformer function. Further, the plurality of first voltage-sharing capacitive screens 83a are coaxially and sequentially arranged along the radial direction of the conductor 3a in a communication manner, the first voltage-sharing capacitive screen 83a of the innermost layer is used for gradually shortening the two ends of each first voltage-sharing capacitive screen 83a towards the axial middle part of the insulating core 2a, the first voltage-sharing capacitive screen 83a of the insulating core 2a is used for improving the axial and radial electric field distribution, shortening the axial length and reducing the radial size of the insulating core, and then the function of the voltage transformer is realized under the condition that the volume of the high-voltage bin 1a is ensured to be minimum.

As shown in fig. 2-3, the lead shielding tube 6 is sleeved with a composite sleeve 7, one end of the composite sleeve 7 and one end of the lead shielding tube 6 extend into the high-voltage bin body 1a from the bottom side and are abutted against the insulating core body 2a (no supporting insulator is arranged), and the other end of the composite sleeve 7 and the lead shielding tube 6 are rotatably arranged on the support base 33. Of course, the joint between the composite sleeve 7 and the high-voltage chamber 1 needs to be sealed. The composite bushing 7 provides an insulation distance between the high voltage body 1, the conductor 3 and the base of the ground potential. The composite bushing 7 provides an insulation distance between the high voltage body 1, the conductor 3 and the base of the ground potential. As a degraded example, a support insulator for supporting the insulating core 2a may be provided.

The first outgoing line is connected to a secondary junction box 34 through a lead shielding pipe 6, and the secondary junction box 34 is used for connection with low-voltage secondary equipment. The ground wire of the first grounded capacitance screen 82a is also grounded through the lead shielding pipe 6.

As shown in fig. 2-3, the composite sleeve 7 is a capacitive sleeve, and includes a capacitive insulating core 71 sleeved outside the lead shielding tube 6, where the capacitive insulating core 71 includes a main capacitor group 71-0 disposed therein, and the main capacitor group 71-0 includes a plurality of second capacitive screens alternately disposed with the insulating layer along the radial direction of the lead shielding tube 6. Further, the composite sleeve 7 further includes a composite sleeve insulation sheath 72 sleeved outside the capacitor insulation core 71, and the composite sleeve insulation sheath 72 is an insulation umbrella skirt, preferably a silicone rubber insulation umbrella skirt. The composite sleeve 7 of the embodiment adopts a capacitive sleeve, improves the insulating performance, and does not need to be filled with SF ₆ Gas, and significantly reduced in size. Of course, as a degraded example, the composite sleeve 7 may be an existing high-voltage composite sleeve.

As shown in fig. 3, the capacitive insulating core 71 includes a main capacitor bank 71-0 disposed therein, and the main capacitor bank 71-0 includes a plurality of second capacitor screens alternately disposed with insulating layers in the radial direction of the lead shielding pipe 6. Further, in the insulating core 2a, the first capacitive screen of the innermost layer is a first high voltage power Rong Bing for electrically connecting with the conductor 3 a; in the capacitive insulating core 71, the innermost second capacitive screen (i.e., the second capacitive screen closest to the lead shielding tube 6 in the radial direction of the lead shielding tube 6) is a second grounded capacitive screen for grounding, the outermost second capacitive screen (i.e., the second capacitive screen farthest from the lead shielding tube 6 in the radial direction of the lead shielding tube 6) is a second high-voltage capacitive screen for connecting high voltage, and the rest of the high-voltage bins 1a are equipotential. The capacitive insulating core 71 serves as an insulator between the outside high voltage and the inside lead shielding pipe 6 in its radial direction and serves as an insulator between the top high voltage and the bottom base in its axial direction.

As shown in fig. 3, the plurality of second capacitive screens includes a main capacitive screen 71-01 for forming a main capacitor C10 and a second voltage dividing voltage Rong Bing-00 for forming a voltage dividing capacitor C11, where the main capacitor C10 and the voltage dividing capacitor C11 are connected in series to form a second capacitive voltage divider, and the second capacitive voltage divider has an outgoing line, which is a second outgoing line, for implementing a voltage transformer function. Further, in the radial direction of the lead shielding tube 6, the second partial voltage Rong Bing 71-00 is provided away from the lead shielding tube 6 with respect to the second partial voltage Rong Bing 71-00. Further, the upper ends of the second capacitive screens are inserted into the high-voltage bin body 1a, and the upper ends of the second capacitive screens are gradually shortened to the side where the lower ends of the capacitive insulating cores 71 are located from the second capacitive screen at the innermost layer to the second capacitive screen at the outermost layer; the lower ends of the second capacitive screens are gradually shortened from the second capacitive screen at the innermost layer to the second capacitive screen at the outermost layer to the side where the high-voltage bin body 1a is located.

As shown in fig. 3, the capacitive insulating core 71 further includes a second shielding capacitive screen group 71-1 disposed therein, where the second shielding capacitive screen group 71-1 is wrapped outside the main capacitive screen group 71-0 and includes a plurality of third capacitive screens alternately disposed with the insulating layer along the radial direction of the lead shielding tube 6, and in the second capacitive screen group 71-1, the innermost third capacitive screen is offset to the outermost third capacitive screen in a direction from the bottom end to the top end of the transmission pillar 31 and is stacked in turn to the side where the top end of the transmission pillar 31 is located. Further, in the two adjacent third capacitive screens, the lower end of the third capacitive screen located above is sleeved outside the upper end of the third capacitive screen located below.

The high-voltage bin body 1a is filled with a gelatinous insulating material, the gelatinous insulating material fills the whole space of the high-voltage bin body 1a, and the insulating core body 2a is coated, so that gaps are avoided. The gel-like insulating material refers to a viscous fluid like latex, toothpaste, and honey, so that the gel-like insulating material can fill the whole space of the high-voltage bin body 1a to avoid gaps, and the gel-like insulating material keeps gel-like at normal temperature or is solidified into an elastic insulating material with elasticity at normal temperature (the elastic insulating material becomes gel-like when heated and the like). If the gel-like insulating material is cured, it is preferable to use a gel-like elastic insulating material having elasticity after curing to effectively avoid occurrence of gaps, but of course, a hard insulating material after curing may be used, with only a relatively poor effect, and easy occurrence of gaps. The colloidal insulating material can be a double-component silicone grease gel, thick silicone oil, you Ni Gill insulating filling compound or silicone rubber and the like. Of course, other insulating materials with good insulating effect suitable for high voltage may be used as well, which is known in the art.

As shown in fig. 1-2, the transmission pillar 31 further includes a pillar silica gel umbrella skirt 8, a pillar base 33, a rotation operation mechanism 32 and a secondary junction box 34, the pillar silica gel umbrella skirt 8 is sleeved outside the composite sleeve 7, the lower end of the transmission pillar 31 is rotatably arranged on the pillar base 33, the secondary junction box 34 is arranged on the pillar base 33 and is connected with the outgoing line in the lead shielding tube 6, and the rotation operation mechanism 32 is in transmission connection with the transmission pillar 32 to drive the rotation of the transmission pillar. Specifically, the rotation operation mechanism 32 drives the transmission support column 31 to self-transfer around the axis thereof, and the transmission support column 31 drives the two groups of first movable contacts 2 to rotate through the high-voltage transformer a so as to be closed and opened with the two groups of first fixed contacts 12.

As shown in fig. 1-2, the isolating switch of the high-integration combined electrical appliance of the present embodiment further comprises a base 30, the lower end of the insulating column 10 is fixedly arranged on the base 30, the column base 33 is fixedly arranged on the base 30,

as shown in fig. 1-2, the high-integration combined electrical apparatus of the present embodiment further includes a circuit breaker 5, the circuit breaker includes a circuit breaker insulating sleeve 52, a second fixed contact 50 and a second movable contact 51 disposed in the circuit breaker insulating sleeve 52, a flow guiding flexible connection 54, and a circuit breaker operating mechanism 53; the bottom end of the circuit breaker insulating sleeve 52 is fixedly connected with the top end of one insulating upright post 10, the insulating upright post 10 is a supporting upright post 55, the flow guiding flexible connection 54 is electrically connected with the second moving contact 51 and the first fixed contact 12 on the top end of the supporting upright post 55, the circuit breaker operating mechanism 53 comprises an insulating pull rod 53-0 and an opening and closing driving rod 53-1, the opening and closing driving rod 53-1 is arranged at the bottom end of the supporting upright post 55, one end of the insulating pull rod 53-0 is in transmission connection with the second moving contact 51, and the other end of the insulating pull rod passes through the middle of the supporting upright post 55 and is in transmission connection with the opening and closing driving rod 53-1. Further, the bottom end of the insulating sleeve 52 of the circuit breaker is abutted against and fixedly connected with the top end of the supporting upright post 55, the two are coaxially arranged, the first fixed contact 12 is fixed between the insulating sleeve 52 of the circuit breaker and the supporting upright post 55, the two ends of the flow guiding soft connection 54 are respectively connected with the second movable contact 51 and the first fixed contact 12 to conduct the two, and the opening and closing drive 53-1 is fixedly arranged on the base 30.

As shown in fig. 1-2, the isolating switch of the high-integration combined electrical apparatus of the present embodiment further includes two groups of connection terminals 11, which are respectively connected to the two groups of first fixed contacts 12 and are respectively used as an incoming connection terminal and an outgoing connection terminal. Further, one group of wiring terminals 11 is directly connected with one group of first fixed contacts 12, the other group of wiring terminals 11 is connected with the other group of first fixed contacts 12 through the circuit breaker 5, and the wiring terminals 11 are arranged at the top end of the circuit breaker 5.

As shown in fig. 2, preferably, at least one insulating column 10 is a capacitive insulating column 40, the capacitive insulating column 40 includes a second insulating core 41, a plurality of fourth capacitive screens are disposed in the second insulating core 41 along a radial direction thereof and are alternately arranged around the insulating layer, the plurality of fourth capacitive screens include a second voltage-equalizing capacitive screen forming a voltage-equalizing capacitor C20, a second voltage-dividing capacitive screen forming a voltage-dividing capacitor C21, and a fourth grounding capacitive screen, the voltage-equalizing capacitor C20 and the voltage-dividing capacitor C21 are connected in series to form a third capacitive voltage divider, and a third capacitive voltage divider is connected to an outgoing line, which is a third outgoing line for realizing a voltage transformer function; the second insulating core 41 is further internally provided with a lightning arrester assembly, the lightning arrester assembly comprises zinc oxide valve plates 46, the zinc oxide valve plates 46 are stacked in the cavity of the second insulating core 41, and are electrically connected with the fixed contact 12 at the top end of the capacitive insulating support 40 through conductors. Further, the capacitor box insulation support 40 further includes a capacitor insulation support insulation umbrella skirt, and the capacitor insulation support insulation umbrella skirt is sleeved outside the second insulation core 41; an elastic piece is arranged at the top of each zinc oxide valve plate 46 to press each zinc oxide valve plate 46; the lower end of the capacitive insulating support 40 is also provided with a monitoring terminal 49, the monitoring terminal 49 is connected with a third outgoing line, and the monitoring terminal 49 is connected with external monitoring equipment.

Specifically, as shown in fig. 1-2, in the high-integration combined electrical apparatus of the present embodiment, two insulating columns 10 of the isolating switch are supporting columns 55, and the other is a capacitive insulating column 40.

In this embodiment, the insulating layers are made of glass filaments impregnated with epoxy resin, and the capacitive screen is made of semiconductive tapes or metal tapes, and the alternate arrangement of the capacitive screen and the insulating layers means that the capacitive screen and the insulating layers are wound alternately.

As shown in fig. 2-3, a second embodiment of the high-integration combiner of the present utility model is shown.

The second embodiment is different from the first embodiment in the high-integration combined electrical apparatus: in the high-integration combined electrical apparatus of this embodiment, the isolating switch further includes a coil 4a, the coil 4a is disposed in the high-voltage bin 1a and sleeved outside the insulating core 2a, and the coil 4a is connected to the outgoing line through the lead shielding tube 6, which is a fourth outgoing line. Further, the first grounded capacitance screen 82 forms a ground potential on the surface of the insulating core 2a, and an air coil is closely disposed as the coil 4a outside the ground potential of the insulating core 2 a. The isolating switch of the embodiment has the functions of a current transformer and a voltage transformer at the same time. And an air coil is tightly attached to the outer side of the ground potential of the insulating core body 2a and used as the coil 4a, a fourth outgoing line is connected to the air coil and used as a signal source of the current transformer, and the air coil can be tightly sleeved on the outer side of the ground potential of the insulating core body 2a, so that the overall diameter is greatly reduced. Moreover, because the ground potential is realized in the high-voltage bin body 1a through the insulating core body 2a, an electronic low-power air coil can be arranged, so that the volume is greatly reduced, the volume and the weight are only a few tenths of those of a traditional ferromagnetic coil, and the whole insulating bin is smaller in appearance. As an alternative embodiment, of course, a ferromagnetic coil may be used as the coil 4a.

In this embodiment, one end of the composite sleeve 7 and the lead shielding tube 6 extend into the high-voltage chamber 1a from the bottom side thereof and abut against the coil 4a (no supporting insulator is provided).

The following is a third embodiment of the high-integration combined electrical apparatus of the present utility model.

The third embodiment is different from the second embodiment in the high-integration combined electrical apparatus in that: the plurality of first capacitive screens of the insulating core 2a includes only the first voltage-equalizing capacitive screen 83a for forming the voltage-equalizing capacitor C1 and the first ground power Rong Bing a for grounding, that is, the high-voltage transformer has only the function of a current transformer, and no longer has the function of a voltage transformer.

It should be noted that, in the description of the present utility model, the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate an orientation or a positional relationship based on that shown in the drawings or an orientation or a positional relationship conventionally put in use, and are merely for convenience of description, and do not indicate that the apparatus or element to be referred to must have a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating relative importance.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims (10)

1. The high-integration combined electrical appliance comprises an isolating switch, wherein the isolating switch comprises a contact circuit, the contact circuit comprises a moving contact structure and at least one group of first fixed contacts (12), the moving contact structure comprises at least one group of first moving contacts (2), and the moving contact structure rotates to enable the first moving contacts (2) and the first fixed contacts (12) to be closed and disconnected;

the method is characterized in that: the isolating switch further comprises at least one group of high-voltage transformers (a), each high-voltage transformer (a) comprises a high-voltage bin body (1 a), an insulating core body (2 a) and a conductor (3 a), the insulating core body (2 a) is positioned in the high-voltage bin body (1 a), the insulating core body (2 a) is coated outside the conductor (3 a), and a plurality of first capacitive screens which are alternately arranged with the insulating layer along the radial direction of the conductor (3 a) are arranged in the insulating core body; in the insulating core body (2 a), the first capacitance screen at the outermost side is a first grounded capacitance screen (82 a) used for grounding; the conductor (3 a) is connected in series with a contact circuit; the rest space of the high-voltage bin body (1 a) is filled with colloidal insulating materials;

the plurality of first capacitive screens includes a first voltage-equalizing capacitive screen (83 a) for forming a voltage-equalizing capacitance C1; the isolating switch further comprises a coil (4 a) sleeved outside the insulating core body (2 a), and the coil (4 a) is connected with an outgoing line through a lead shielding pipe (6) which is coated with a composite sleeve (7) and stretches into the high-voltage bin body (1 a) for realizing the function of a current transformer.

2. The high-integration combined electrical appliance comprises an isolating switch, wherein the isolating switch comprises a contact circuit, the contact circuit comprises a moving contact structure and at least one group of first fixed contacts (12), the moving contact structure comprises at least one group of first moving contacts (2), and the moving contact structure rotates to enable the first moving contacts (2) and the first fixed contacts (12) to be closed and disconnected;

the method is characterized in that: the isolating switch further comprises at least one group of high-voltage transformers (a), each high-voltage transformer (a) comprises a high-voltage bin body (1 a), an insulating core body (2 a) and a conductor (3 a), the insulating core body (2 a) is positioned in the high-voltage bin body (1 a), the insulating core body (2 a) is coated outside the conductor (3 a), and a plurality of first capacitive screens which are alternately arranged with the insulating layer along the radial direction of the conductor (3 a) are arranged in the insulating core body; in the insulating core body (2 a), the first capacitance screen at the outermost side is a first grounded capacitance screen (82 a) used for grounding; the conductor (3 a) is connected in series with a contact circuit; the rest space of the high-voltage bin body (1 a) is filled with colloidal insulating materials;

the voltage-sharing capacitor is characterized in that the plurality of first capacitor screens comprise a first voltage-sharing capacitor screen (83 a) used for forming a voltage-sharing capacitor C1 and a first voltage-sharing capacitor screen (84 a) used for forming a voltage-sharing capacitor C2, the voltage-sharing capacitor C1 and the voltage-sharing capacitor C2 are connected in series to form a first capacitor voltage divider, and the first capacitor voltage divider is connected with an outgoing line through a lead shielding pipe (6) which is wrapped with a composite sleeve (7) and stretches into the high-voltage bin body (1 a) and used for realizing the function of a voltage transformer.

3. The high-integration combined electrical appliance comprises an isolating switch, wherein the isolating switch comprises a contact circuit, the contact circuit comprises a moving contact structure and at least one group of first fixed contacts (12), the moving contact structure comprises at least one group of first moving contacts (2), and the moving contact structure rotates to enable the first moving contacts (2) and the first fixed contacts (12) to be closed and disconnected;

the method is characterized in that: the isolating switch further comprises at least one group of high-voltage transformers (a), each high-voltage transformer (a) comprises a high-voltage bin body (1 a), an insulating core body (2 a) and a conductor (3 a), the insulating core body (2 a) is positioned in the high-voltage bin body (1 a), the insulating core body (2 a) is coated outside the conductor (3 a), and a plurality of first capacitive screens which are alternately arranged with the insulating layer along the radial direction of the conductor (3 a) are arranged in the insulating core body; in the insulating core body (2 a), the first capacitance screen at the outermost side is a first grounded capacitance screen (82 a) used for grounding; the conductor (3 a) is connected in series with a contact circuit; the rest space of the high-voltage bin body (1 a) is filled with colloidal insulating materials;

the plurality of first capacitance screens comprise a first voltage-sharing capacitance screen (83 a) for forming a voltage-sharing capacitance C1 and a first voltage-dividing capacitance screen (84 a) for forming a voltage-dividing capacitance C2, the voltage-sharing capacitance C1 and the voltage-dividing capacitance C2 are connected in series to form a first capacitance voltage divider, and the capacitance voltage divider is used for realizing the function of a voltage transformer by wrapping a lead wire shielding tube (6) outgoing wire in the composite sleeve (7) and extending into the high-voltage bin body (1 a); the isolating switch further comprises a coil (4 a) sleeved outside the insulating core body (2 a), and the coil (4 a) is connected with an outgoing line through a lead shielding tube (6) and used for realizing the function of a current transformer.

4. A high integration combined electrical apparatus according to any one of claims 1-3, wherein: the isolating switch further comprises a transmission pillar (31) and at least one insulation pillar (10), wherein the insulation pillar (10) and the transmission pillar (31) are arranged at intervals side by side, the first moving contact (2) is arranged at the top end of the transmission pillar (31) and synchronously rotates along with the transmission pillar, and the top end of the insulation pillar (10) is provided with a first fixed contact (12);

the high-voltage bin body (1 a) is arranged at the top end of the transmission support column (31), the conductor (3 a) is connected with the first movable contact (2), and the transmission support column (31) comprises a composite sleeve (7) and a lead shielding tube (6);

or, the high-voltage bin body (1 a) is arranged at the top end of one insulating upright post (10) and is connected with the corresponding first fixed contact (12), and the insulating upright post (10) comprises a composite sleeve (7) and a lead shielding tube (6).

5. The high-integration combined electrical apparatus according to claim 4, wherein: the isolating switch comprises two insulating stand columns (10), a contact circuit comprises two groups of first fixed contacts (12), a moving contact structure comprises two groups of first moving contacts (2), a high-voltage bin body (1 a) is arranged at the top end of a transmission stand column (31) and connected between the two groups of first moving contacts (2) in series, the two insulating stand columns (10) are arranged at intervals side by side and are provided with the transmission stand column (31) therebetween, the two groups of first fixed contacts (12) are respectively arranged at the top ends of the two insulating stand columns (10), and the high-voltage bin body (1 a) is arranged at the top ends of the transmission stand columns (31) and synchronously rotates along with the transmission stand columns to drive the two groups of first moving contacts (2) and the first fixed contacts (12) to be closed and disconnected through the conductors (3 a).

6. The high-integration combined electrical apparatus according to claim 4, wherein: the transmission pillar (31) further comprises a pillar silica gel umbrella skirt (8), a pillar base (33), a rotary operating mechanism (32) and a secondary junction box (34), wherein the pillar silica gel umbrella skirt (8) is sleeved outside the composite sleeve (7), the lower end of the transmission pillar (31) is rotationally arranged on the pillar base (33), the secondary junction box (34) is arranged on the pillar base (33) and is connected with an outgoing line in the lead shielding pipe (6), and the rotary operating mechanism (32) is connected with the transmission pillar (31) in a transmission way to drive the transmission pillar to rotate.

7. The high-integration combined electrical apparatus according to claim 4, wherein: the isolating switch further comprises a base (30), the lower end of the insulating upright post (10) is fixedly arranged on the base (30), and the lower end of the transmission upright post (31) is rotatably arranged on the base (30).

8. The high-integration combined electrical apparatus according to claim 4, wherein: the composite sleeve (7) is a capacitive sleeve and comprises a capacitive insulating core (71) sleeved outside the lead shielding pipe (6), the capacitive insulating core (71) comprises a main capacitor group (71-0) arranged in the capacitive insulating core, and the main capacitor group (71-0) comprises a plurality of second capacitor screens alternately arranged along the radial direction of the lead shielding pipe (6) and an insulating layer.

9. The high-integration combined electrical apparatus according to claim 5, wherein: at least one insulating column (10) is a capacitive insulating column (40), the capacitive insulating column (40) comprises a second insulating core body (41), and a plurality of fourth capacitive screens which are alternately arranged along the radial direction of the second insulating core body (41) and the insulating layers in a surrounding mode are arranged in the second insulating core body (41);

the second insulating core body (41) is internally provided with a lightning arrester component, the lightning arrester component comprises zinc oxide valve plates (46), the zinc oxide valve plates (46) are arranged in a cavity of the second insulating core body (41) in a stacked mode, and the lightning arrester component is electrically connected with a static contact (12) at the top end of the capacitive insulating support (40) through a conductor.

10. The high-integration combined electrical apparatus according to claim 5, wherein: the high-integration combined electrical appliance further comprises a circuit breaker (5), wherein the circuit breaker (5) comprises a circuit breaker insulating sleeve (52), a second fixed contact (50) and a second movable contact (51) which are arranged in the circuit breaker insulating sleeve (52), a flow guiding flexible connection (54) and a circuit breaker operating mechanism (53); the circuit breaker insulating sleeve (52) bottom and the top of an insulating stand column (10) are fixedly connected, the insulating stand column (10) is a supporting stand column (55), the backflow flexible connection (54) is electrically connected with the second moving contact (51) and the first fixed contact (12) on the top of the supporting stand column (55), the circuit breaker operating mechanism (53) comprises an insulating pull rod (53-0) and an opening and closing drive (53-1), the opening and closing drive (53-1) is arranged at the bottom of the supporting stand column (55), one end of the insulating pull rod (53-0) is in transmission connection with the second moving contact (51), and the other end of the insulating pull rod is in transmission connection with the opening and closing drive (53-1) after passing through the middle of the supporting stand column (55).