CN112117160A - Integrated vacuum circuit breaker for gas insulated switchgear - Google Patents

Abstract

The invention discloses an integrated vacuum circuit breaker for a gas insulated switchgear, which comprises a gas tank, a heat dissipation device, a circuit breaker assembly and a three-station assembly, wherein the heat dissipation device, the circuit breaker assembly and the three-station assembly are arranged on the gas tank, the circuit breaker assembly comprises a circuit breaker mechanism, an embedded pole and a shielding ring, the shielding ring is arranged on the embedded pole and used for isolating current, the three-station assembly comprises a switch switching assembly and a three-station mechanism for controlling the switch switching assembly, the switch switching assembly comprises a grounding contact seat, a middle contact seat, a transmission screw rod, a moving contact and a closing contact seat, the three-station mechanism controls the communication of the moving contact and the closing contact seat or the grounding contact seat through the driving transmission screw rod, the invention ensures the coaxial positioning of the closing contact seat, the middle contact seat and the grounding contact seat of the three-station switch, thereby forming a stable switch module by the circuit breaker and the three-station switch, the debugging difficulty of the three-position switch assembly is reduced, and the operation reliability is improved.

Description

Integrated vacuum circuit breaker for gas insulated switchgear

Technical Field

The invention belongs to the field of high and medium voltage switch equipment, and relates to an integrated vacuum circuit breaker for a gas insulated switchgear.

Background

With the continuous progress of science and technology, the requirements of human beings on power distribution products are higher and higher, and the development direction of switch equipment is formed by environmental protection, energy conservation, intelligence, maintenance-free, high reliability, low cost and the like. In this context, gas-insulated switchgear cabinets are one of the important developments.

The three-position switch is one of the most important elements of the gas insulation switch cabinet, the existing three-position switch of the gas insulation switch cabinet is divided into two types, one type is that contact seats which are connected and isolated are respectively supported on an insulating part which is grounded so as to ensure the reliability of an isolation fracture, but the assembly positioning requirement is high, because the insulating parts are respectively fixed at different positions of a gas box, the deformation of the gas box can cause positioning errors, the operation of the three-position switch is difficult, and the operation reliability is greatly reduced; the other contact seat for connection and isolation is supported on the integral insulating part, so that the positioning reliability is improved, the possibility of leakage current cannot be avoided, and huge potential safety hazards exist. The insulating medium of the gas insulated switchgear adopts SF6 gas, and further adopts environment-friendly gases such as dry air or nitrogen, so that the environment adaptability of the switchgear is effectively improved, and meanwhile, various insulating gases also form a huge heat transfer bottleneck between a sealed gas box and a heating main conductive loop, and the device effectively solves the problem.

Disclosure of Invention

The invention provides an integrated vacuum circuit breaker for a gas insulated switchgear in order to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an integral type vacuum circuit breaker for gas insulated switchgear which characterized in that: including gas tank, heat abstractor, circuit breaker subassembly and triplex position subassembly, heat abstractor, circuit breaker subassembly and triplex position unit mount are on the gas tank, the circuit breaker subassembly includes circuit breaker mechanism, seals utmost point post and shielding ring admittedly, the shielding ring is installed on seals utmost point post admittedly for isolated current, triplex position subassembly includes switch switching module and control switch switching module's triplex position mechanism, switch switching module includes ground connection contact base, middle contact base, transmission lead screw, moving contact and combined floodgate contact base, triplex position mechanism is through the intercommunication of drive transmission lead screw control moving contact and combined floodgate contact base or ground connection contact base.

Further, the method comprises the following steps of; the improved gas tank structure is characterized in that aluminum substrates are symmetrically and fixedly arranged on two sides of the gas tank, an installation cavity of installation equipment is fixedly arranged in the gas tank, the solid-sealed polar columns and the switch switching assembly are installed in the installation cavity, two sides of the solid-sealed polar columns are fixedly and transversely fixed with the two groups of aluminum substrates respectively, upper connecting copper bars and lower connecting copper bars for longitudinal fixation are connected between the solid-sealed polar columns and the gas tank, the upper connecting copper bars and the lower connecting copper bars are located on the upper side and the lower side of the solid-sealed polar columns respectively, the upper connecting copper bars and the lower connecting copper bars are arranged to be L-shaped structures, the circuit breaker mechanism is installed on the side face of the aluminum substrate and connected with the solid-sealed polar columns, the three-station mechanism is installed.

Further, the method comprises the following steps of; the circuit breaker subassembly is provided with three groups, gu seal utmost point post and include insulating casing and the vacuum interrupter of pouring in insulating casing, go out the line seat and go out the line seat down, the vacuum interrupter both sides are provided with quiet conducting rod respectively and move the conducting rod, be provided with contact system in the vacuum interrupter, the vacuum interrupter move the conducting rod through contact system and quiet conducting rod with be qualified for the next round of competitions down and be connected, the vacuum interrupter move the conducting rod and pass through the connecting piece flexible coupling with last line seat of being qualified for the next round of competitions, the connecting piece sets up to L type structure, the vertical profile of connecting piece with move the conducting rod and be connected, the horizontal profile of connecting piece is connected with last line seat of being qualified for the next round of competitions, be connected through insulating pull rod between vacuum interrupter and circuit breaker mechanism.

Further, the method comprises the following steps of; still include the ground cushion and connect the buffer block, the ground cushion is used for connecting and seals utmost point post and gas tank admittedly, it is used for connecting the shielding ring to the different groups to connect the buffer block, ground cushion, connection buffer block switch on shielding ring and grounded gas tank, eliminate the leakage current who keeps apart between the fracture.

Further, the method comprises the following steps of; the three-station assembly is provided with three groups, the closing contact seat is fixedly arranged on an upper connecting copper bar, the middle contact seat is fixedly connected with an upper wire outlet seat, the moving contact is positioned in the middle contact seat and is in sliding penetrating connection with the middle contact seat, the grounding contact seat is arranged on an aluminum substrate, one end of the transmission screw rod is connected with the three-station mechanism, the other end of the transmission screw rod penetrates through the grounding contact seat and is in spiral connection with the moving contact, the grounding contact seat, the middle contact seat, the transmission screw rod, the moving contact and the closing contact seat are arranged in a coaxial structure, so that the circuit breaker assembly and the three-station assembly form a stable switch module, the three-station mechanism drives the moving contact to axially move through the transmission screw rod so as to switch the on-off state of the equipment, the moving contact axially moves to be connected with the closing contact seat, the closing contact seat is in conductive contact with the, the grounding contact seat is in conductive contact with the middle contact seat to enable the equipment to be in a grounding state, and the three-station mechanism further controls the on-off state of the equipment through the transmission screw rod.

Further, the method comprises the following steps of; the three-station mechanism provides power for the on-off state of the control equipment through a transmission device, a moving rod is arranged on the three-station mechanism, a connecting rod is fixedly arranged on a transmission lead screw, the transmission device comprises a driven wheel fixedly arranged on the connecting rod and a driving wheel fixedly arranged on the moving rod, the driving wheel is connected with the driven wheel and the driven wheel through a belt or a synchronous belt or a chain, and the rotation of the driving wheel is controlled by the three-station mechanism, so that the on-off state of the equipment is switched.

Further, the method comprises the following steps of; the heat dissipation device comprises two heat dissipation modes, one mode is through a heat radiator, the heat radiator is hermetically installed on the air box and is connected with the switch module as a whole, a heat conduction cushion pad is connected between the heat radiator and a solid-sealed polar pole positioned in the installation cavity, the other mode is that the air box side plates are symmetrically provided with inwards concave air drawing cavities, when the switch cabinets are combined, a certain gap is arranged between the two air boxes, the air drawing cavities on the side plates form an air drawing channel of the whole side plate, so that the temperature distribution of the air box tends to be uniform, the heat dissipation is uniform, meanwhile, the rear end and the side surface of the solid-sealed polar pole respectively transmit heat to the heat radiator and the surface of the air box with a heat conduction path formed by the heat radiator and the side plates, and the heat.

Further, the method comprises the following steps of; the center of two end faces of the grounding buffer block and the connecting buffer block is respectively provided with a first inner cavity and a second inner cavity, the grounding buffer block and the connecting buffer block are connected with the gas tank and the shielding ring through the first inner cavity and the second inner cavity, the heat conduction buffer cushion, the grounding buffer block and the connecting buffer block are made of silicon rubber, ethylene propylene diene monomer or functional rubber materials with proper elasticity and heat conductivity, the grounding buffer block and the connecting buffer block are provided with semi-conducting layers which are reliably contacted, the surface resistance of a connecting loop is high in stability, the central position of the heat conduction buffer cushion is provided with a bulge, a matched hole device structure is fixedly arranged on the solid-sealed polar pole, the heat conduction buffer cushion and the solid-sealed polar pole are fixedly connected through the installation of the bulge and the hole device structure, and the heat conduction buffer cushion, the grounding buffer block and the connecting buffer block are provided with proper compression amount, the contact reliability of the faying surfaces of the connected structures and the continuity of heat conduction paths are guaranteed, the heat conduction buffering cushions and the grounding buffering blocks compensate relative movement between the gas box and the vacuum circuit breaker due to temperature condition change, welding deformation and assembly deformation, and the connection buffering blocks compensate relative movement between the solid-sealed polar poles due to assembly errors.

Further, the method comprises the following steps of; the circuit breaker assembly further comprises an identification assembly, the identification assembly comprises an operation interface fixedly arranged on the circuit breaker mechanism, the operation interface is fixedly provided with a disconnecting switch position indication and a grounding switch position indication which are positioned at the upper side, the disconnecting switch position indication and the grounding switch position indication display the state of equipment, when the disconnecting switch position indication displays 'I', the grounding switch position indication displays 'O', the equipment is in a closing state, when the disconnecting switch position indication displays 'O', the grounding switch position indication displays 'O', the equipment is in a separating state, when the disconnecting switch position indication displays 'O', the grounding switch position indication displays 'I', the equipment is in a grounding state, and an energy storage indicator, a counter display interface and a state indication interface are fixedly arranged on the operation interface, the energy storage indication board represents an energy storage state and an energy non-storage state according to a stretching state indicated by the spring, the counter displays the used times of the vacuum circuit breaker on an interface, and the state indication interface displays closing and opening states.

Further, the method comprises the following steps of; three station mechanisms are still including instructing the subassembly, instruct the subassembly include with move the rotary rod that the pole is connected, the external twist grip of rotary rod, the handle sets up to many circles rotation type structure, the rotary rod outside is provided with clockwise and anticlockwise arrow, and the arrow direction indicates corresponding on-off state, according to the direction of rotation of arrow direction adjustment handle.

In conclusion, the invention has the advantages that:

1) according to the invention, the closing contact seat and the middle contact seat are arranged on the solid-sealed polar pole, so that the coaxial positioning of the closing contact seat, the middle contact seat and the grounding contact seat of the three-position switch is ensured, the circuit breaker and the three-position switch form a stable switch module, the clamping stagnation and even the clamping of a main loop caused by overlarge coaxiality deviation of the three-position switch due to factors such as deformation of an air box are avoided, the mechanical operation characteristics of the three-position switch and the circuit breaker cannot be changed due to the influence of subsequent assembly, the debugging difficulty of the assembly of the three-position switch is reduced, and the operation reliability is improved.

2) The shielding ring is communicated with the grounded gas tank through the grounding buffer block and the connecting buffer block 141, so that a reliable grounding structure is formed between isolated fractures, leakage current cannot flow from a closing contact tube to a middle contact tube, the leakage current between the isolated fractures is thoroughly eliminated, the isolation function of the three-position switch is truly exerted, and safe and reliable isolation is realized.

3) The external radiator is adopted for heat dissipation, meanwhile, the air boxes are provided with the inwards concave air pulling cavities, a certain gap is formed between the two air boxes and the air pulling cavities 155 on the side plates for heat dissipation when the switch cabinets are combined, so that the air pulling channels of the whole side plates are formed, and the heat dissipation effect of the radiator and the surfaces of the air boxes is effectively utilized through the double heat dissipation structure, so that the heat dissipation effect of the equipment is improved.

Drawings

FIG. 1 is a schematic view of the apparatus of the present invention.

FIG. 2 is a top view of the apparatus of the present invention.

Fig. 3 is a right side view of the apparatus of the present invention.

Fig. 4 is an enlarged schematic view of a in fig. 3.

FIG. 5 is a schematic diagram of the ground buffer block of the present invention.

FIG. 6 is a schematic diagram of a connection buffer block according to the present invention.

Fig. 7 is a schematic view of a thermally conductive cushion of the present invention.

The labels in the figure are: the three-station mechanism 100, an aluminum substrate 101, a breaker mechanism 102, an air box 103, an upper wire outlet base 104, an insulating pull rod 105, a connecting piece 106, a lower connecting copper bar 107, a shielding ring 108, a vacuum arc extinguish chamber 109, a lower wire outlet base 110, a solid-sealed pole 111, a heat-conducting buffer pad 112, an insulating shell 113, a heat sink 114, an upper connecting copper bar 116, a closing contact base 117, a moving contact 118, a middle contact base 119, a transmission screw rod 120, a grounding contact base 121, an operation interface 131, a counter display interface 132, a state indication interface 133, an isolation switch position indication 134, a grounding switch position indication 135, an energy storage indication board 136, a connecting buffer block 141, a grounding buffer block 142, an installation cavity 150, a first inner cavity 151, a second inner cavity 152, a draft cavity 155, a connecting rod 160, a driven wheel 161, a driving wheel 162, a moving.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

All directional indicators (such as up, down, left, right, front, rear, lateral, longitudinal … …) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the movement, etc. in a particular posture, and if the particular posture is changed, the directional indicator is changed accordingly.

The first embodiment is as follows:

as shown in fig. 1 to 7, an integrated vacuum circuit breaker for a gas insulated switchgear includes an air tank 103, a heat dissipation device, a circuit breaker assembly and a three-position assembly, where the heat dissipation device, the circuit breaker assembly and the three-position assembly are installed on the air tank 103, the circuit breaker assembly includes a circuit breaker mechanism 102, a solid-sealed terminal 111 and a shielding ring 108, the shielding ring 108 is installed on the solid-sealed terminal 111 and used for isolating current, the three-position assembly includes a switch switching assembly and a three-position mechanism 100 controlling the switch switching assembly, the switch switching assembly includes a ground contact seat 121, a middle contact seat 119, a transmission lead screw 120, a moving contact 118 and a closing contact seat 117, and the three-position mechanism 100 controls the communication between the moving contact 118 and the closing contact seat 117 or the ground contact seat 121 by driving the transmission lead screw 120.

As shown in fig. 1, aluminum substrates 101 are symmetrically and fixedly arranged on the left and right sides of the air box 103, an installation cavity 150 for installing equipment is fixedly arranged in the air box 103, the embedded poles 111 are installed in the installation cavity 150, two sides of the embedded poles 111 are respectively and fixedly arranged with two groups of aluminum substrates 101, so as to fix the embedded poles 111 in the transverse direction, the embedded poles 111 are in a strip structure, in order to avoid the deformation problem, an upper connecting copper bar 116 and a lower connecting copper bar 107 for longitudinal fixation are connected between the embedded poles 111 and the air box 103, the upper connecting copper bar 116 and the lower connecting copper bar 107 are respectively positioned on the upper side and the lower side of the embedded poles 111 to ensure the stability of the embedded poles 111, the upper connecting copper bar 116 and the lower connecting copper bar 107 are arranged in an L-shaped structure, and the horizontal forming surfaces of the upper connecting copper bar 116 and the lower connecting copper bar 107 are respectively and fixedly connected with the insulating shell 113, the vertical forming surfaces of the upper connecting copper bar 116 and the lower connecting copper bar 107 are fixedly connected with the side surface of the air box 103 respectively, the circuit breaker mechanism 102 is installed on the outer side surface of the aluminum substrate 101 and connected with the solid-sealed polar column 111, the switch switching component of the three-station component is installed in the installation cavity 150, the three-station mechanism 100 is installed on the outer side surface of the aluminum substrate 101 and connected with the switch switching component, and the three-station component is located on the upper side of the circuit breaker component.

As shown in fig. 1-2, the circuit breaker assembly is provided with three groups, the solid-sealed pole 111 includes an insulating housing 113, and a vacuum arc-extinguishing chamber 109, an upper outgoing line seat 104 and a lower outgoing line seat 110 which are cast in the insulating housing 113, the left and right sides of the vacuum arc-extinguishing chamber 109 are respectively provided with a static conducting rod (not shown) and a dynamic conducting rod (not shown), a contact system (not shown) is arranged in the vacuum arc-extinguishing chamber 109, the dynamic conducting rod of the vacuum arc-extinguishing chamber 109 is connected with the lower outgoing line seat 110 through the contact system and the static conducting rod, the dynamic conducting rod of the vacuum arc-extinguishing chamber 109 is connected with the upper outgoing line seat 104 through a connecting piece 106, specifically, in this embodiment, the connecting piece 106 is provided with an L-shaped structure, the vertical molding surface of the connecting piece 106 is connected with the dynamic conducting rod, the horizontal molding surface of the connecting piece 106 is connected with the upper outgoing line seat 104, and the connecting piece 106 is, guarantee that the return circuit is unobstructed when guaranteeing to move the stationary motion of conducting rod, through above-mentioned structure, go out line seat 104 and go out line seat 110 down and switch on through moving conducting rod, contact system and quiet conducting rod, be connected through insulating pull rod 105 between vacuum interrupter 109 and circuit breaker mechanism 102, shield ring 108 sets up in the outside of sealing solid vacuum interrupter 109 position on utmost point post 111, shield ring 108 wraps up solid utmost point post 111 completely, has realized forming reliable ground structure between keeping apart the fracture to make leakage current can not flow to middle contact seat 119 from closing a floodgate contact seat 117, realized safe and reliable's isolation.

The circuit breaker subassembly still includes ground connection buffer block 142 and connects buffer block 141, ground connection buffer block 142 and connection buffer block 141 about both ends face center set up first inner chamber 151 and second inner chamber 152 respectively, ground connection buffer block 142 and connection buffer block 141 are connected with gas tank 103 and shield ring 108 through first inner chamber 151 and second inner chamber 152, specifically, ground connection buffer block 142 is used for connecting and seals utmost point post 111 and gas tank 103 admittedly, it is used for connecting the shield ring 108 of different groups to connect buffer block 141, switches on shield ring 108 and grounded gas tank through ground connection buffer block 142, connection buffer block 141, has thoroughly eliminated the leakage current between the isolation fracture, really exerts the isolation function of three-station switch.

In this embodiment, the ground buffer block 142 and the connection buffer block 141 are made of silicon rubber, ethylene propylene diene monomer or functional rubber with appropriate elasticity and thermal conductivity, the ground buffer block 142 and the connection buffer block 141 are provided with semi-conducting layers, the semi-conducting layers are reliably contacted, the stability of the surface resistance of a connection loop is improved, the ground buffer block 142 and the connection buffer block 141 are provided with appropriate compression amounts, reliable contact of the joint surfaces of the connected structures and continuous heat conduction paths are ensured, the ground buffer block 142 compensates relative movement between the gas tank and the vacuum circuit breaker due to temperature condition change, welding deformation and assembly deformation, and the connection buffer block 141 compensates relative movement between the solid-sealed poles due to assembly errors.

As shown in fig. 3, the circuit breaker assembly further includes a sign assembly, the sign assembly includes an operation interface 131 fixedly disposed on the circuit breaker mechanism 102, the operation interface 131 is fixedly disposed with a disconnecting switch position indicator 134 and a grounding switch position indicator 135 disposed at an upper side, the disconnecting switch position indicator 134 and the grounding switch position indicator 135 display the status of the device, specifically, when the disconnecting switch position indicator 134 displays "I", the grounding switch position indicator 135 displays "O", indicating that the device is in a closing status, when the disconnecting switch position indicator 134 displays "O", the grounding switch position indicator 135 displays "O", indicating that the device is in a opening status, when the disconnecting switch position indicator 134 displays "O", the grounding switch position indicator 135 displays "I", indicating that the device is in a grounding status, and the operation interface 131 is fixedly disposed with an energy storage indicator 136, The energy storage indicator 136 represents an energy storage state and an energy non-storage state according to a tensile state indicated by a spring, the counter display interface 132 displays the number of times the vacuum circuit breaker has been used, and the state indication interface 133 displays a closing state and an opening state.

As shown in fig. 1-2, the three-station components are provided with three groups, the closing contact seat 117 and the grounding contact seat 121 are provided with inner cavities, the closing contact seat 117 is fixedly arranged on a vertical horizontal plane of the upper connecting copper bar 116, the middle contact seat 119 is fixedly connected with the upper wire outlet seat 104, the movable contact 118 is positioned in the middle contact seat 119 and is slidably and penetratingly connected with the middle contact seat 119, the grounding contact seat 121 is mounted on the aluminum substrate 101, one end of the transmission screw rod 120 is connected with the three-station mechanism 100, the other end of the transmission screw rod 120 penetrates through the grounding contact seat 121 and is spirally connected with the movable contact 118, the grounding contact seat 121, the middle contact seat 119, the transmission screw rod 120, the movable contact 118 and the closing contact seat 117 are arranged in a coaxial structure, the circuit breaker component and the three-station components form a stable switch module, and the main circuit blockage and even blockage caused by overlarge coaxiality deviation of the three-station switch due, the mechanical operation characteristics of the breaker component and the three-position component are not changed under the influence of subsequent final assembly, thereby improving the operation reliability, reducing the debugging difficulty of the three-position switch assembly, in practice, when the movable contact 118 is in the intermediate rest position, the device is in the open state, when the three-position mechanism 100 drives the transmission screw rod 120 to drive the movable contact 118 to move axially, the device is in a switch switching state, specifically, when the moving contact 118 moves axially to the inner cavity of the closing contact seat 117, the closing contact seat 117 is in conductive contact with the middle contact seat 119 to make the device in a closing state, when the movable contact 118 moves axially to the inner cavity of the grounding contact seat 121, the grounding contact seat 121 is in conductive contact with the middle contact seat 119 to make the device in a grounding state, the three-position mechanism 100 controls the on-off state of the equipment through the transmission screw rod 120.

In this embodiment, the three-position mechanism 100 provides power for controlling the on-off state of the device through a transmission device, specifically, a moving rod 163 is disposed on the three-position mechanism 100, a connecting rod 160 is fixedly disposed on the driving screw rod 120, the transmission device includes a driven wheel 161 fixedly disposed on the connecting rod 160 and a driving wheel 162 fixedly disposed on the moving rod 163, the driving wheel 162 is connected with the driven wheel 161 through a belt, a synchronous belt, or a chain, the driven wheels 161 of different groups are connected through a belt, a synchronous belt, or a chain, the three-position mechanism 100 drives the driving wheel 162 to rotate, and then the driven wheel 161 drives the driving screw rod 120 to rotate under the action of the belt, the on-off state of the device is switched, the three-position mechanism 100 further includes an indicating component, the indicating component includes a rotating rod 170 connected with the moving rod 163, and the rotating rod 170 is externally, the handle sets up to many circles rotation type structure, the rotary rod 170 outside is provided with clockwise and anticlockwise arrow, and the arrow direction indicates corresponding on-off state, according to the direction of rotation of arrow direction adjustment handle, indicate the subassembly still including the state indication interface that is located rotary rod 170 one side, in this embodiment, the state indication interface includes two sets ofly, corresponds isolator and earthing switch's state indication respectively, shows closing a floodgate and separating brake state.

As shown in fig. 1-2 and 5-7, the heat dissipation apparatus includes two parts, one of which is to add an external device for heat dissipation, in this embodiment, a heat sink 114 is used for heat dissipation, the heat sink 114 is hermetically mounted on the air box 103 and is connected to the switch module as a whole, a heat conducting cushion 112 is connected between the heat sink 114 and the embedded pole 111 located inside the mounting cavity 150, the heat conducting cushion 112 is made of silicon rubber, ethylene propylene diene monomer rubber or functional rubber material with suitable elasticity and heat conductivity, the heat conducting cushion 112 has a suitable compression amount to ensure that the contact between the overlapping surfaces of the connected structures is reliable and the heat conducting path is continuous, a protrusion is disposed at the center of the heat conducting cushion 112, a matching hole device structure is fixedly disposed on the embedded pole 111, and the heat conducting cushion 112 and the embedded pole 111 are fixedly connected by the installation of the protrusion and the hole device structure, the thermally conductive cushion 112 compensates for relative movement between the gas tank and the vacuum circuit breaker, for example, due to temperature condition changes, welding deformation, and assembly deformation; and secondly, a heat dissipation channel is added by improving the equipment, in the embodiment, the air boxes 103 are symmetrically provided with inwards concave air draft cavities 155 on the left side plate and the right side plate, a certain gap is formed between the two air boxes when the switch cabinets are combined, the air draft cavities 155 on the side plates and the air draft cavities 155 on the two air boxes form the air draft channel of the whole side plate, when a current-carrying loop of the switch cabinet passes through working current for a long time, the heat is generated, according to the principle that hot air flow rises, the temperature distribution of the air boxes tends to be uniform, the whole air boxes are fully utilized to dissipate heat outwards, meanwhile, heat conduction paths formed by the rear ends and the side surfaces of the solid-sealed polar columns and the heat dissipater and the side plates can transfer heat to the surfaces of the heat dissipater and the air boxes, the heat dissipation effect.

In other embodiments, the upper connecting copper bar 116 and the closing contact seat 117 may have the same structure and size.

It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides an integral type vacuum circuit breaker for gas insulated switchgear which characterized in that: including gas tank, heat abstractor, circuit breaker subassembly and triplex position subassembly, heat abstractor, circuit breaker subassembly and triplex position unit mount are on the gas tank, the circuit breaker subassembly includes circuit breaker mechanism, seals utmost point post and shielding ring admittedly, the shielding ring is installed on seals utmost point post admittedly for isolated current, triplex position subassembly includes switch switching module and control switch switching module's triplex position mechanism, switch switching module includes ground connection contact base, middle contact base, transmission lead screw, moving contact and combined floodgate contact base, triplex position mechanism is through the intercommunication of drive transmission lead screw control moving contact and combined floodgate contact base or ground connection contact base.

2. An integrated vacuum circuit breaker for a gas insulated switchgear according to claim 1, characterized in that: the improved gas tank structure is characterized in that aluminum substrates are symmetrically and fixedly arranged on two sides of the gas tank, an installation cavity of installation equipment is fixedly arranged in the gas tank, the solid-sealed polar columns and the switch switching assembly are installed in the installation cavity, two sides of the solid-sealed polar columns are fixedly and transversely fixed with the two groups of aluminum substrates respectively, upper connecting copper bars and lower connecting copper bars for longitudinal fixation are connected between the solid-sealed polar columns and the gas tank, the upper connecting copper bars and the lower connecting copper bars are located on the upper side and the lower side of the solid-sealed polar columns respectively, the upper connecting copper bars and the lower connecting copper bars are arranged to be L-shaped structures, the circuit breaker mechanism is installed on the side face of the aluminum substrate and connected with the solid-sealed polar columns, the three-station mechanism is installed.

3. An integrated vacuum circuit breaker for a gas insulated switchgear according to claim 1, characterized in that: the circuit breaker subassembly is provided with three groups, gu seal utmost point post and include insulating casing and the vacuum interrupter of pouring in insulating casing, go out the line seat and go out the line seat down, the vacuum interrupter both sides are provided with quiet conducting rod respectively and move the conducting rod, be provided with contact system in the vacuum interrupter, the vacuum interrupter move the conducting rod through contact system and quiet conducting rod with be qualified for the next round of competitions down and be connected, the vacuum interrupter move the conducting rod and pass through the connecting piece flexible coupling with last line seat of being qualified for the next round of competitions, the connecting piece sets up to L type structure, the vertical profile of connecting piece with move the conducting rod and be connected, the horizontal profile of connecting piece is connected with last line seat of being qualified for the next round of competitions, be connected through insulating pull rod between vacuum interrupter and circuit breaker mechanism.

4. An integrated vacuum circuit breaker for a gas insulated switchgear according to claim 1, characterized in that: still include the ground cushion and connect the buffer block, the ground cushion is used for connecting and seals utmost point post and gas tank admittedly, it is used for connecting the shielding ring to the different groups to connect the buffer block, ground cushion, connection buffer block switch on shielding ring and grounded gas tank, eliminate the leakage current who keeps apart between the fracture.

5. An integrated vacuum circuit breaker for a gas insulated switchgear according to claim 1, characterized in that: the three-station assembly is provided with three groups, the closing contact seat is fixedly arranged on an upper connecting copper bar, the middle contact seat is fixedly connected with an upper wire outlet seat, the moving contact is positioned in the middle contact seat and is in sliding penetrating connection with the middle contact seat, the grounding contact seat is arranged on an aluminum substrate, one end of the transmission screw rod is connected with the three-station mechanism, the other end of the transmission screw rod penetrates through the grounding contact seat and is in spiral connection with the moving contact, the grounding contact seat, the middle contact seat, the transmission screw rod, the moving contact and the closing contact seat are arranged in a coaxial structure, so that the circuit breaker assembly and the three-station assembly form a stable switch module, the three-station mechanism drives the moving contact to axially move through the transmission screw rod so as to switch the on-off state of the equipment, the moving contact axially moves to be connected with the closing contact seat, the closing contact seat is in conductive contact with the, the grounding contact seat is in conductive contact with the middle contact seat to enable the equipment to be in a grounding state, and the three-station mechanism further controls the on-off state of the equipment through the transmission screw rod.

6. An integrated vacuum circuit breaker for a gas insulated switchgear according to claim 1, characterized in that: the three-station mechanism provides power for the on-off state of the control equipment through a transmission device, a moving rod is arranged on the three-station mechanism, a connecting rod is fixedly arranged on a transmission lead screw, the transmission device comprises a driven wheel fixedly arranged on the connecting rod and a driving wheel fixedly arranged on the moving rod, the driving wheel is connected with the driven wheel and the driven wheel through a belt or a synchronous belt or a chain, and the rotation of the driving wheel is controlled by the three-station mechanism, so that the on-off state of the equipment is switched.

7. An integrated vacuum circuit breaker for a gas insulated switchgear according to claim 1, characterized in that: the heat dissipation device comprises two heat dissipation modes, one mode is through a heat radiator, the heat radiator is hermetically installed on the air box and is connected with the switch module as a whole, a heat conduction cushion pad is connected between the heat radiator and a solid-sealed polar pole positioned in the installation cavity, the other mode is that the air box side plates are symmetrically provided with inwards concave air drawing cavities, when the switch cabinets are combined, a certain gap is arranged between the two air boxes, the air drawing cavities on the side plates form an air drawing channel of the whole side plate, so that the temperature distribution of the air box tends to be uniform, the heat dissipation is uniform, meanwhile, the rear end and the side surface of the solid-sealed polar pole respectively transmit heat to the heat radiator and the surface of the air box with a heat conduction path formed by the heat radiator and the side plates, and the heat.

8. An integral type vacuum circuit breaker for a gas insulated switchgear according to claim 4 or 7, characterized in that: the center of two end faces of the grounding buffer block and the connecting buffer block is respectively provided with a first inner cavity and a second inner cavity, the grounding buffer block and the connecting buffer block are connected with the gas tank and the shielding ring through the first inner cavity and the second inner cavity, the heat conduction buffer cushion, the grounding buffer block and the connecting buffer block are made of silicon rubber, ethylene propylene diene monomer or functional rubber materials with proper elasticity and heat conductivity, the grounding buffer block and the connecting buffer block are provided with semi-conducting layers which are reliably contacted, the surface resistance of a connecting loop is high in stability, the central position of the heat conduction buffer cushion is provided with a bulge, a matched hole device structure is fixedly arranged on the solid-sealed polar pole, the heat conduction buffer cushion and the solid-sealed polar pole are fixedly connected through the installation of the bulge and the hole device structure, and the heat conduction buffer cushion, the grounding buffer block and the connecting buffer block are provided with proper compression amount, the contact reliability of the faying surfaces of the connected structures and the continuity of heat conduction paths are guaranteed, the heat conduction buffering cushions and the grounding buffering blocks compensate relative movement between the gas box and the vacuum circuit breaker due to temperature condition change, welding deformation and assembly deformation, and the connection buffering blocks compensate relative movement between the solid-sealed polar poles due to assembly errors.

9. An integrated vacuum circuit breaker for a gas insulated switchgear according to claim 1, characterized in that: the circuit breaker assembly further comprises an identification assembly, the identification assembly comprises an operation interface fixedly arranged on the circuit breaker mechanism, the operation interface is fixedly provided with a disconnecting switch position indication and a grounding switch position indication which are positioned at the upper side, the disconnecting switch position indication and the grounding switch position indication display the state of equipment, when the disconnecting switch position indication displays 'I', the grounding switch position indication displays 'O', the equipment is in a closing state, when the disconnecting switch position indication displays 'O', the grounding switch position indication displays 'O', the equipment is in a separating state, when the disconnecting switch position indication displays 'O', the grounding switch position indication displays 'I', the equipment is in a grounding state, and an energy storage indicator, a counter display interface and a state indication interface are fixedly arranged on the operation interface, the energy storage indication board represents an energy storage state and an energy non-storage state according to a stretching state indicated by the spring, the counter displays the used times of the vacuum circuit breaker on an interface, and the state indication interface displays closing and opening states.

10. An integrated vacuum circuit breaker for a gas insulated switchgear according to claim 1, characterized in that: three station mechanisms are still including instructing the subassembly, instruct the subassembly include with move the rotary rod that the pole is connected, the external twist grip of rotary rod, the handle sets up to many circles rotation type structure, the rotary rod outside is provided with clockwise and anticlockwise arrow, and the arrow direction indicates corresponding on-off state, according to the direction of rotation of arrow direction adjustment handle.

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