CN110690663B

CN110690663B - Handcart-type looped netowrk cabinet

Info

Publication number: CN110690663B
Application number: CN201911130219.2A
Authority: CN
Inventors: 李锋; 李晏平; 黄崇波
Original assignee: Chongqing Shineng Electric Power Equipment Co ltd
Current assignee: Chongqing Shineng Electric Power Equipment Co ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-08-28
Anticipated expiration: 2039-11-18
Also published as: CN110690663A

Abstract

The invention discloses a handcart type ring main unit, which comprises a main unit body, a bus chamber, a breaking chamber, an instrument chamber, a breaking mechanism, a locking mechanism and a pressure relief plate, wherein the bus chamber is arranged at the top of an inner cavity of the main unit body, the breaking chamber is arranged in the middle of the inner cavity of the main unit body, the instrument chamber is arranged on the right side of the top of the inner cavity of the main unit body, the breaking mechanism is arranged at the bottom of the inner cavity of the breaking chamber, the locking mechanism is arranged at the top of the inner wall of the breaking chamber, the pressure relief plate is arranged at the top of the main unit body, the inner cavity of the breaking chamber is provided with two scissor fork mechanisms, the handcart type ring main unit adopts a handcart type vacuum breaker to replace the element matching mode of a traditional high-voltage isolating switch and a fixed type vacuum breaker, the handcart type vacuum breaker is directly pulled out of the ring main unit body to form an obvious primary circuit, the potential safety hazard is eliminated, and more importantly, unnecessary economic loss brought to the client can be avoided.

Description

Handcart-type looped netowrk cabinet

Technical Field

The invention relates to the technical field of high-voltage power distribution, in particular to a handcart type ring main unit.

Background

The Ring Main Unit (Ring Main Unit) is a group of electric equipment (high-voltage switch equipment) which is arranged in a metal or nonmetal insulating cabinet body or is made into an assembled interval Ring Main power supply Unit, and the core part of the Ring Main Unit adopts a load switch and a fuse, so that the Ring Main Unit has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like. The transformer substation is widely applied to distribution stations and box-type substations of load centers of urban residential districts, high-rise buildings, large public buildings, factory enterprises and the like.

The conventional fixed type vacuum circuit breaker (VS1) ring main unit adopts the high-voltage isolating switch and the element configuration mode of fixed type vacuum circuit breaker (VS1), just can realize that the ring main unit has obvious primary circuit fracture when overhauing or cutting off the power supply, thereby guarantee maintainer's personal safety, fixed type high-voltage isolating switch and fixed type vacuum circuit breaker (VS1), be difficult for the change or the maintenance of component, when changing or overhauing the component, need the outage of entire system, bring unnecessary economic loss and potential safety hazard for the customer.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a handcart type ring main unit, which solves the problem that a fixed type vacuum circuit breaker ring main unit in the prior art is low in safety.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a handcart-type looped netowrk cabinet, includes the main cabinet body, bus-bar room, opens circuit room, instrument room, opens circuit mechanism, lock and die the mechanism and release plate, the bus-bar room sets up the top at main cabinet internal chamber, the room that opens circuit sets up the middle part at main cabinet internal chamber, the instrument room sets up the right side at main cabinet internal chamber top, the mechanism that opens circuit sets up in the bottom of the indoor chamber that opens circuit, the top at the indoor wall that opens circuit is installed to the mechanism that closes circuit, release plate installs the top at the main cabinet body, the inner chamber that opens circuit the room is provided with two scissors fork mechanisms.

The break mechanism includes vacuum circuit breaker, is used for communicating the mechanism once touch the claw, is used for putting through the aviation plug of secondary circuit, is used for quick assembly disassembly vacuum circuit breaker's chassis car and two support rails that are used for dismouting vacuum circuit breaker, support rails passes through the bottom that the bolt was installed at the break chamber inner wall, chassis car activity joint is on support rails's track, vacuum circuit breaker's bottom and chassis car's top fixed connection, touch the right side and the left top fixed connection of vacuum circuit breaker of claw, aviation plug's right side and the left bottom fixed connection of vacuum circuit breaker.

Preferably, scissors fork mechanism includes atress box, bearing horizontal bolt, spacing, scissors fork, pull rod and guard gate, the inner wall fixed connection of bolt and outage room is passed through to the one side that the atress box was carried on the back mutually, one side of bearing horizontal bolt and the inner wall fixed connection of atress box, the bottom of spacing and the bottom fixed connection of outage indoor wall, the overlapping formula's in right side suit of scissors fork is on the outer lane of bearing horizontal bolt, the bottom of pull rod is connected with the scissors fork of top layer position, the right side of guard gate and the top fixed connection of pull rod.

Preferably, the locking mechanism includes basic installation piece, nylon gyro wheel, activity locking lever, stirs baffle and fixed locking lever, the top at the indoor wall of circuit breaker is installed through the bolt to basic installation piece, the side and the basic installation piece fixed connection of fixed locking lever, the nylon gyro wheel passes through the cross bolt and installs on fixed locking lever, the back of activity locking lever and the positive fixed connection of nylon gyro wheel, stir the bottom of baffle and vacuum circuit breaker's top fixed connection.

Preferably, a gap of 3-5 cm is reserved between the support guide rail and the vertical inner wall of the breaking chamber, the scissors fork mechanism is installed between the reserved gaps, and the scissors fork mechanism is located on the motion path of the breaking mechanism.

Preferably, the earthing switch is equipped with to the vacuum circuit breaker lower extreme, and the bolt fastening is passed through to the both sides at pressure relief board top, the side of the main cabinet body is provided with the cabinet door, is equipped with a plurality of fixed strips of making by soft magnetic material and the adsorbed layer of making by soft magnetic material on the cabinet door, is equipped with a plurality of archs in the adsorbed layer, and protruding and fixed strip laminating are overlapped to the adsorbed layer overcoat and are covered with the C/N cotton brocade flame retardant fabric that closes the aluminium foil in the area.

The invention provides a handcart type ring main unit. The method has the following beneficial effects:

(1) this handcart-type looped netowrk cabinet to handcart-type vacuum circuit breaker replaces traditional high-voltage isolator and fixed vacuum circuit breaker's component collocation mode, directly takes handcart-type vacuum circuit breaker out the looped netowrk cabinet body and can form obvious primary circuit fracture, guarantees maintainer's personal safety.

(2) This handcart-type looped netowrk cabinet, in the change of core element or when overhauing, directly take handcart-type vacuum circuit breaker out the looped netowrk cabinet body, this process does not need whole electric power system to carry out the outage operation, when having eliminated the potential safety hazard, more importantly can avoid bringing unnecessary economic loss for the customer.

(3) This handcart-type looped netowrk cabinet, when unexpected phenomenon of catching fire takes place, can lead to the automatic droing of C/N cotton-polyamide flame retardant cloth, thereby prevent the further expansion of intensity of a fire, nevertheless because C/N cotton-polyamide flame retardant cloth is soft material, can adhere on the adsorbed layer after being ignited, and the fixed strip passes through magnetic adsorption with the arch, ambient temperature around the transformer rises rapidly after catching fire, soft-magnetic can disappear under high temperature environment gradually, lead to the adsorptivity between fixed strip and the arch to disappear, the adsorbed layer then drops automatically, form the median between looped netowrk cabinet and the external world, further prevent the intensity of a fire from extending, greatly improve the security of this looped netowrk cabinet, greatly improved the fire behavior of this looped netowrk cabinet.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic diagram of the circuit interrupting mechanism of the present invention;

FIG. 4 is a schematic view of the locking mechanism of the present invention;

FIG. 5 is a schematic structural diagram of a scissors mechanism of the present invention.

In the figure: the device comprises a main cabinet body 1, a bus chamber 2, a circuit breaking chamber 3, an instrument chamber 4, a circuit breaking mechanism 5, a vacuum circuit breaker 501, a contact claw 502, an aviation plug 503, a chassis 504, a support guide rail 505, a locking mechanism 6, a basic mounting block 601, a nylon roller 602, a movable locking rod 603, a toggle baffle 604, a fixed locking rod 605, a pressure relief plate 7, a scissor fork 8 mechanism, a stressed box 801, a bearing cross bolt 802, a limit strip 803, a scissor fork 804, a pull rod 805 and a protective door 806.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-5, the present invention provides a technical solution: a handcart type ring main unit comprises a main cabinet body 1, a bus chamber 2, a breaking chamber 3, an instrument chamber 4, a breaking mechanism 5, a locking mechanism 6 and a pressure relief plate 7, wherein the bus chamber 2 is arranged at the top of the inner cavity of the main cabinet body 1, the breaking chamber 3 is arranged in the middle of the inner cavity of the main cabinet body 1, the instrument chamber 4 is arranged on the right side of the top of the inner cavity of the main cabinet body 1, the breaking mechanism 5 is arranged at the bottom of the inner cavity of the breaking chamber 3, the locking mechanism 6 is arranged at the top of the inner wall of the breaking chamber 3, the pressure relief plate 7 is arranged at the top of the main cabinet body 1, the inner cavity of the breaking chamber 3 is provided with two scissor fork mechanisms 8, the breaking mechanism 5 comprises a vacuum circuit breaker 501, a contact claw 502 for communicating a primary mechanism, an aviation plug 503 for connecting a secondary circuit, a chassis 504 for quickly disassembling and assembling a vacuum circuit breaker 501 and assembling, the chassis 504 is movably clamped on a track of a support guide rail 505, the bottom of the vacuum circuit breaker 501 is fixedly connected with the top of the chassis 504, the right side of the contact claw 502 is fixedly connected with the top of the left side of the vacuum circuit breaker 501, the right side of the aviation plug 503 is fixedly connected with the bottom of the left side of the vacuum circuit breaker 501, the scissor fork mechanism 8 comprises a stress box 801, a bearing cross bolt 802, a limit strip 803, a scissor fork 804, a pull rod 805 and a protective door 806, the opposite side of the stress box 801 is fixedly connected with the inner wall of the breaking chamber 3 through a bolt, one side of the bearing cross bolt 802 is fixedly connected with the inner wall of the stress box 801, the bottom of the limit strip 803 is fixedly connected with the bottom of the inner wall of the breaking chamber 3, the right side of the scissor fork 804 is overlapped and sleeved on the outer ring of the bearing cross bolt, the bottom of the pull rod 805 is connected with the scissor fork 804 at the top, the locking mechanism 6 comprises a base mounting block 601, a nylon roller 602, a movable lock rod 603, a toggle baffle 604 and a fixed lock rod 605, wherein the base mounting block 601 is mounted at the top of the inner wall of the breaking chamber 3 through bolts, the side surface of the fixed lock rod 605 is fixedly connected with the base mounting block 601, the nylon roller 602 is mounted on the fixed lock rod 605 through a cross bolt, the back surface of the movable lock rod 603 is fixedly connected with the front surface of the nylon roller 602, the bottom of the toggle baffle 604 is fixedly connected with the top of the vacuum circuit breaker 501, a gap of 3-5 cm is reserved between a support guide rail 505 and the vertical inner wall of the breaking chamber 3, a scissor fork mechanism 8 is mounted between the reserved gaps, the scissor fork mechanism 8 is positioned on the motion path of the breaking mechanism 5, a grounding knife switch is mounted at the lower end of the vacuum circuit breaker 501, two sides of the top of a pressure relief plate 7 are fixed through bolts, the side surface of the main cabinet, the adsorption layer is internally provided with a plurality of bulges which are attached to the fixing strips, and the adsorption layer is externally sleeved with C/N cotton-nylon flame-retardant cloth with a covered aluminum foil.

When the handcart type ring main unit is used, namely the operation and movement process of each part of the breaking chamber 3, taking the installation of the vacuum circuit breaker 501 as an example again, firstly, the switch door of the breaking chamber 3 is opened, the chassis 504 provided with the vacuum circuit breaker 501 is directly placed on the sliding track of the supporting guide rail 505, wherein the bottom of the vacuum circuit breaker 501 is fixedly installed on the top of the chassis 504 through a locking inserted bar, the vacuum circuit breaker 501 is pushed to the inner cavity of the breaking chamber 3, namely, the vacuum circuit breaker 501 is pushed to the left side according to the drawing, in the process, when the vacuum circuit breaker 501 moves to the position of the scissor fork mechanism 8, one side of the vacuum circuit breaker 501 close to the stress box 801 directly impacts the surface of a rolling cylinder arranged on the scissor fork 804, the impact force enables the two scissor forks 804 to carry out angle transformation around the bearing cross bolt 802, the bottom scissor fork 804 only simply rotates downwards along the limiting strip 803, the scissor fork 804 at the top layer lifts the pull rod 805 to push the protective door 806 to expose the position of the static contact box hole, then the contact claw 502 of the vacuum circuit breaker is in butt joint with the static contact, so that the upper end and the lower end of the primary loop are independently communicated, the aviation plug 503 is inserted into an aviation socket fixed on the cabinet body to connect the secondary loop, in the process of the loop, the toggle baffle 604 at the top of the vacuum circuit breaker 501 drives the nylon roller 602 to rotate through friction force until the movable lock rod 603 is changed into the horizontal position, and finally the cabinet door is closed, so that the vacuum circuit breaker and connectors of the two loops are reinforced by the interaction force between the cabinet door and the movable lock rod 603 to prevent looseness.

In summary, according to the handcart type ring main unit, the handcart type vacuum circuit breaker is used for replacing the element matching mode of the traditional high-voltage isolating switch and the fixed type vacuum circuit breaker, the handcart type vacuum circuit breaker is directly drawn out of the ring main unit body, an obvious primary circuit fracture can be formed, and the personal safety of maintainers is guaranteed.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a handcart-type looped netowrk cabinet which characterized in that: the intelligent cabinet breaker comprises a main cabinet body (1), a bus chamber (2), a breaking chamber (3), an instrument chamber (4), a breaking mechanism (5), a locking mechanism (6) and a pressure relief plate (7), wherein the bus chamber (2) is arranged at the top of the inner cavity of the main cabinet body (1), the breaking chamber (3) is arranged in the middle of the inner cavity of the main cabinet body (1), the instrument chamber (4) is arranged on the right side of the top of the inner cavity of the main cabinet body (1), the breaking mechanism (5) is arranged at the bottom of the inner cavity of the breaking chamber (3), the locking mechanism (6) is arranged at the top of the inner wall of the breaking chamber (3), the pressure relief plate (7) is arranged at the top of the main cabinet body (1), and the inner cavity of the breaking chamber (3) is provided with two scissor fork mechanisms;

the circuit breaking mechanism (5) comprises a vacuum circuit breaker (501), a contact claw (502) used for being communicated with a primary mechanism, an aviation plug (503) used for being communicated with a secondary circuit, a chassis (504) used for quickly disassembling and assembling the vacuum circuit breaker (501) and two supporting guide rails (505) used for disassembling and assembling the vacuum circuit breaker (501), wherein the supporting guide rails (505) are installed at the bottom of the inner wall of a circuit breaking chamber (3) through bolts, the chassis (504) is movably clamped on a track of the supporting guide rails (505), the bottom of the vacuum circuit breaker (501) is fixedly connected with the top of the chassis (504), the right side of the contact claw (502) is fixedly connected with the top of the left side of the vacuum circuit breaker (501), and the right side of the aviation plug (503) is fixedly connected with the bottom of the left side of the vacuum circuit breaker (501;

the locking mechanism (6) comprises a base mounting block (601), a nylon roller (602), a movable lock rod (603), a toggle baffle (604) and a fixed lock rod (605), wherein the base mounting block (601) is mounted at the top of the inner wall of the breaker chamber (3) through a bolt, the side surface of the fixed lock rod (605) is fixedly connected with the base mounting block (601), the nylon roller (602) is mounted on the fixed lock rod (605) through a cross bolt, the back surface of the movable lock rod (603) is fixedly connected with the front surface of the nylon roller (602), and the bottom of the toggle baffle (604) is fixedly connected with the top of the vacuum breaker (501);

the scissors fork mechanism (8) comprises a stress box (801), a bearing transverse bolt (802), a limiting strip (803), scissors forks (804), a pull rod (805) and a protective door (806), wherein one face, back to the stress box (801), is fixedly connected with the inner wall of a breaking chamber (3) through a bolt, one side of the bearing transverse bolt (802) is fixedly connected with the inner wall of the stress box (801), the bottom of the limiting strip (803) is fixedly connected with the bottom of the inner wall of the breaking chamber (3), the right side of the scissors forks (804) is sleeved on the outer ring of the bearing transverse bolt in an overlapped mode, the bottom of the pull rod (805) is connected with the scissors forks (804) at the top layer position, and the right side of the protective door (806) is fixedly connected with the top of the pull rod (805).

2. The handcart type ring main unit according to claim 1, wherein: a gap of 3-5 cm is reserved between the supporting guide rail (505) and the vertical inner wall of the breaking chamber (3), the scissor fork mechanism (8) is installed between the reserved gaps, and the scissor fork mechanism (8) is located on the movement path of the breaking mechanism (5).

3. The handcart type ring main unit according to claim 1, wherein: vacuum circuit breaker (501) lower extreme is equipped with earthing switch, and the bolt fastening is passed through to the both sides at pressure relief board (7) top, the side of the main cabinet body (1) is provided with the cabinet door, is equipped with a plurality of fixed strips of making by soft magnetic material and the adsorbed layer of making by soft magnetic material on the cabinet door, is equipped with a plurality of archs in the adsorbed layer, and protruding and fixed strip laminating are overlapped to the adsorbed layer overcoat and are covered the cotton fire-retardant cloth of the C/N that closes the aluminium foil in the area.