641results about "Switchgear arrangements" patented technology

The invention discloses an intelligent response method for an arc fault of a high-altitude switch cabinet, relates to the technical field of safety protection of power equipment in a high-altitude area, and aims to solve the problems that the arc time of the arc fault is prolonged, the pressure in the cabinet is sharply increased, a traditional disposable pressure relief device cannot be reset and is lack of insulation state evaluation, and the reliability is poor. The invention aims to provide a response method which combines optical signal and pressure double-criterion detection, resettable pressure relief, gas component analysis and intelligent decision so as to improve the safety and reliability of the switch cabinet.

The uninterruptible power supply cabinet includes a cabinet body, a switch component, and a power cabinet. The cabinet body is provided with an external port and a first power connection end, and the external port is configured to connect to an external device. The switch component is disposed in the cabinet body, one end of the switch component is electrically connected to the external port, and another end of the switch component is electrically connected to the first power connection end. The power cabinet is disposed in the cabinet body, and the power cabinet includes a first frame and at least one power module. The first frame includes a second power connection end, and the second power connection end is configured to detachably and electrically connect to the first power connection end.

The invention belongs to the field of power station discharge monitoring, and particularly relates to a multi-compartment GIS equipment discharge source positioning straddle collaborative layout structure, which comprises a core sensor group arranged in each main compartment of GIS equipment and used for collecting UHF pulse signals of a main compartment discharge source and taking the UHF pulse signals as main positioning data; the edge sensor group is arranged at the flange interface between the compartments and is used for collecting UHF pulse signals transmitted across the compartments and taking the UHF pulse signals as auxiliary positioning data; and the signal fusion module is used for establishing a compartment-sensor incidence matrix, and fusing the time delay data of the core sensor group and the edge sensor group through a weighted fusion algorithm. According to the multi-compartment GIS equipment discharge source positioning straddle collaborative layout structure provided by the invention, four functional modules of signal fusion, attenuation calibration, time delay compensation and dynamic calibration are combined, and the core problems of straddle coverage, insufficient precision and too high cost of multi-compartment GIS equipment discharge source positioning are effectively solved.

The invention relates to the technical field of online monitoring, and provides a vacuum environment-friendly GIS air chamber remote control ventilation device and ventilation method.The method comprises the steps that firstly, air chamber environment information in a GIS air chamber is collected; then, according to the micro-water content information in the gas chamber environment information, the GIS gas chamber environment state is judged, when the micro-water content in the GIS gas chamber is higher than the micro-water upper limit value, inflation operation or deflation operation is selected to be executed according to the current density of the insulating gas in the GIS gas chamber, and when the density of the insulating gas is larger than the deflation threshold value, inflation operation or deflation operation is selected to be executed; the method comprises the following steps: firstly, performing deflation operation until the density of insulating gas reaches a deflation threshold value, and alternately performing inflation and deflation operation until the micro-water content is reduced to a micro-water lower limit value; and when the density of the insulating gas is smaller than the deflation threshold value, firstly filling the GIS gas chamber with the insulating gas to enable the density of the insulating gas in the GIS gas chamber to be larger than the deflation threshold value, and then alternately executing the inflation and deflation operations until the micro-water content is reduced to the micro-water lower limit value.

This invention discloses a pole-type environmentally friendly gas-insulated switchgear, belonging to the field of switchgear. It includes a gas cabinet with a sealed environmentally friendly gas chamber inside. An isolating bracket and a pole-type bracket are both fixedly installed within the environmentally friendly gas chamber. A disconnecting switch is fixedly mounted on the isolating bracket, with its upper end electrically connected to an upper conductive terminal. A pole-type circuit breaker is fixedly mounted on the pole-type bracket, with its upper end electrically connected to the lower end of the disconnecting switch. The lower end of the pole-type circuit breaker is electrically connected to a lower conductive terminal. The upper conductive terminal is sealed on the upper part of the environmentally friendly gas chamber, and the lower conductive terminal is sealed on the lower part of the environmentally friendly gas chamber. Through the rational installation and structural improvements of the upper and lower conductive terminals, the disconnecting switch, the pole-type circuit breaker, the isolating bracket, and the pole-type bracket within the gas cabinet, the connections between these components are more compact, the environmentally friendly gas chamber is smaller, and leakage is less likely, effectively ensuring the safety of the entire device.

The utility model relates to the technical field of ring main units, in particular to a ring main unit with a box door locking device. Comprising a box body which comprises a box door; the base is mounted on the lower side of the inner wall of the box door and comprises two symmetrical mounting wall plates, and mounting holes are formed in the mounting wall plates; the locking rod is vertically arranged in the mounting hole in a sliding manner; the elastic component provides downward force for the locking rod; the first limiting part is arranged on the base; the second limiting part is arranged on the locking rod, and the second limiting part can abut against the upper portion of the first limiting part by rotating the locking rod, so that the lower end of the locking rod is higher than the threshold; according to the utility model, the pre-tightening force is matched with the limiting part, so that the position of the locking rod can be stabilized, and the locking function failure caused by upward movement of the position of the locking rod due to vibration in the transportation process is prevented.

The present invention relates to a busbar connection between cabinets, comprising a first cabinet (40) and a second cabinet (41), each containing at least one busbar (30), and including an insulator (10) provided at the junction of the busbars (30) to ensure a reliable electrical connection between the cabinets.

The invention relates to the technical field of switch equipment, and discloses a three-phase sub-box grounding switch based on environment-friendly gas insulation and GIS equipment, the three-phase sub-box grounding switch based on environment-friendly gas insulation comprises a grounding switch shell, two opposite sides in the grounding switch shell are respectively provided with a static contact assembly and a moving contact assembly, and the static contact assembly and the moving contact assembly are arranged in the grounding switch shell. A grounding switch air chamber is arranged between the static contact assembly and the moving contact assembly. The static contact assembly comprises a static contact base and a static arc contact located in the static contact base. A moving contact assembly cavity is arranged on the grounding switch shell on the opposite side of the static contact assembly, and the moving contact assembly cavity is communicated with the crank arm box cavity; the moving contact assembly comprises a moving contact, a piston, an air cylinder and a contact finger seat. According to the invention, the moving contact has a blowing / sucking function in the opening / closing process of the grounding switch, the arc extinguishing effect of the grounding switch when the induction current is cut off is improved, and the requirement of the induction current opening and closing capability of the grounding switch for the GIS under the environment-friendly gas condition is met.

The utility model belongs to the technical field of gas-filled cabinets, and discloses an automatic leak repairing gas-filled cabinet which comprises a shell which is of a double-layer structure and comprises an inner wall and an outer wall. A closed interlayer inner cavity is formed between the inner wall and the outer wall; the inner cavity of the interlayer is filled with leakage repairing liquid, and the leakage repairing liquid is liquid which can be solidified when encountering air; the inner wall is provided with a one-way valve, the one-way valve is communicated with the cabinet cavity of the gas-insulated switchgear and the interlayer inner cavity, and gas is allowed to flow into the interlayer inner cavity from the cabinet cavity in a one-way mode. The leakage repairing process of the inflatable cabinet does not need manual intervention, the response is rapid, the maintenance timeliness is greatly improved, the manpower maintenance cost is remarkably reduced, and meanwhile, the reliability and the safety of the operation of the inflatable cabinet are guaranteed to the maximum extent.

The application provides a control circuit for an isolating switch or grounding switch and GIS equipment, and belongs to the field of GIS equipment, comprising a disconnecting control branch and a closing control branch, wherein the disconnecting control branch is connected with a disconnecting contactor coil in series, is connected with a disconnecting signal input end, and is further connected with a disconnecting holding branch, and the disconnecting holding branch is connected with a positive pole of a control power supply through a normally open contact of a protection relay; the closing control branch is connected with a closing signal input end, is further connected with a closing holding branch, and the closing holding branch is connected with the positive pole of the control power supply through the normally open contact of the protection relay. A protection relay coil and a switch module are connected in series between positive and negative poles of a motor power supply, and the switch module comprises a disconnecting contactor first normally open contact and a closing contactor first normally open contact which are connected in parallel with each other. The starting time of the protection relay is greater than the reset time of the disconnecting contactor and the closing contactor.

The invention discloses a five-prevention program mechanical locking device of an electric appliance cabinet and a gas insulated switchgear thereof. The device comprises an interlocking support; the switching-on locking plate is movably arranged on the interlocking support, and the switching-on locking plate locks a switching-on switch of the circuit breaker at the first position; the closing locking plate unlocks the closing switch at the second position; a closing switch of the circuit breaker in the opening state is located on a path of the closing locking plate moving from the second position to the first position; the opening locking plate is linked with the closing locking plate; the switching-on locking plate locks the switching-off electromagnet when the switching-on locking plate is at the first position, and unlocks the switching-off electromagnet when the switching-on locking plate is at the second position; the two-lock one-key program lock comprises a first program lock for locking the rear door and a second program lock for driving the closing locking plate to move; when the second program lock is locked, the closing locking plate is located at a first position; and when the program lock is unlocked, the closing locking plate is located at the second position. The problem that long-distance mechanical transmission accuracy is poor is solved.

The application discloses a kind of mid-position holding mechanism and gas insulated switchgear in the technical field of electric power switch equipment, mid-position holding mechanism includes compression spring, straight line rod, mid-position holding cylinder, spring fixing device and spring sealing device, the straight line rod is fixed by spring fixing device into the compressed state of less than compression state when preloading, the mid-position holding cylinder is opened along the axis straight line cavity and both ends are opened, respectively, and spring sealing device is used to seal the compression spring in the straight line cavity, the compression height of the compression spring is less than the length of the straight line cavity of the mid-position holding cylinder, the scheme solves the problem of two compression springs in the prior art, and the cost performance is poor, and the beneficial effects of simplifying the structure, saving cost and reducing the volume are achieved.

To easily remove a busbar from an instrument transformer.SOLUTION: An instrument transformer (1) includes a first shuttle bus (11) having a first inner conductor (12) and a first outer conductor (13), and contacts (16) located at both ends of the first shuttle bus (11). When the first inner conductor (12) and a second outer conductor (32) are inserted into and fixed in the contacts (16), a distance (Y) between a first inner conductor end (121) and a second inner conductor end (311) is greater than a length (X) of the portion of the first inner conductor (12) inserted into the contacts (16).SELECTED DRAWING: Figure 3

A high-altitude double-grounding gas-filled cabinet gas tank structure comprises a gas tank formed by connecting a plurality of plates, the gas tank is filled with insulating gas, and the gas tank is divided into an upper gas tank, a middle gas tank and a lower gas tank along the height direction; the upper gas tank is internally provided with a first grounding system, the first grounding system is a two-station grounding switch and comprises a first guide sleeve and a first conducting rod, and one end of the first guide sleeve is provided with an insulation plugging structure, so that the first conducting rod can only move in a single direction; a second grounding system is arranged in the middle gas tank, the second grounding system is a three-station isolating switch, the three-station isolating switch comprises a second guide sleeve and a second conducting rod, and the two ends of the second guide sleeve are open, so that the second conducting rod can move in two opposite directions. Two sets of grounding systems are arranged, when one set of grounding system fails due to reasons, the other set of grounding system can still operate normally, and personal safety is guaranteed.

The utility model relates to the technical field of gas-insulated switchgears, and discloses a high-sealing arc extinguishing insulation gas-insulated switchgear, which comprises a cabinet body, a slideway is arranged at the bottom of the inner wall of the cabinet body, the inner wall of the slideway is connected with a protective cover in a sliding manner, the inner wall of the protective cover is fixedly connected with a motor, the driving end of the motor is fixedly connected with a follower plate, and the follower plate is fixedly connected with an arc extinguishing chamber. Two sliding rails are arranged at the bottom of the inner wall of the cabinet body, two driven plates are slidably connected to the inner walls of the sliding rails, sliding grooves are formed in the sides, close to each other, of the two driven plates, the outer walls of the driven plates are rotatably connected to the interiors of the sliding grooves, and a locking and sealing assembly is arranged outside the cabinet body. According to the utility model, the cabinet body is placed at a specified position, and the handrail is pulled to enable the sliding column to rotate to drive the force of the fixing rod on the fixing block to be released to open the cabinet door, so that the equipment shell, the protective cover and other parts are firmly fixed, the overall protection level of the equipment is improved, and internal sensitive parts are protected from external physical damage, chemical corrosion and the like.

This utility model discloses a fully enclosed insulated gas-filled cabinet, including a cabinet body, a gas box installed on the cabinet body, and a three-position isolating circuit breaker installed inside the gas box. The top of the outer side of the gas box is provided with multiple external heat sinks, and a crossflow fan is installed on the top of the gas box. The top of the inside of the gas box is provided with multiple first internal heat sinks, and multiple second internal heat sinks are provided on both sides of the inner wall of the gas box. Cooling fans corresponding to the second internal heat sinks are symmetrically installed at the bottom of the inner wall of the gas box. This utility model improves the passive heat dissipation capacity of the gas box through the arrangement of the second internal heat sinks, first internal heat sinks, and external heat sinks. Furthermore, when encountering high load conditions leading to high temperatures, the cooling fans and crossflow fans are automatically activated by a temperature sensor and controller to actively dissipate heat, thereby improving the heat dissipation capacity of the gas box and preventing excessively high temperatures.

The utility model provides a kind of current transformer and GIS, belong to high voltage switch field.The current transformer includes mutual inductor cylinder and flange, the outside of flange is equipped with gasket by fastener, the height of mutual inductor cylinder protruding from the outside of flange is greater than the height of fastener and gasket protruding from the outside of flange, one end of mutual inductor cylinder is provided with tangent outside fillet and inside fillet passing through spacer ring, the radius of inside fillet is ten times to fifteen times of the radius of outside fillet, the junction of inside fillet and mutual inductor cylinder inside surface is located between the outside surface and inside surface of flange.The GIS includes the current transformer described above.The utility model dispenses with shielding ring, but by the design and optimization of mutual inductor cylinder structure, the end of mutual inductor cylinder can replace shielding ring and play the role of shielding isolation between conducting rod and gasket, screw.

The invention belongs to the field of transformer substations, and provides a gas leakage plugging device for a flange plate of GIS equipment and a non-power-cut welding plugging method. The flange leakage plugging device of the GIS equipment comprises a plugging clamp, an exhaust pipe, a heat-resistant hose, a gas guide pipe and a vacuum pump, the plugging clamp is hermetically welded on the outer side of a leakage area at a flange plate of the uninterruptible GIS equipment; the air guide pipe and the exhaust pipe are arranged on the side face of the plugging clamp, one end of the heat-resisting hose is connected with the leakage area, and the other end of the heat-resisting hose penetrates through the air guide pipe to be connected with the vacuum pump. The air leakage plugging effect of the flange plate can be guaranteed.

An example health condition assessment method for a medium / low voltage switchgear having temperature sensors at connection points between components of the switchgear, and a main conduction circuit includes: determining key connection points in the conduction circuit to serve as virtual temperature measurement points according to a main conduction circuit structure of the switchgear; establishing a temperature analysis model of the main conduction circuit according to the distribution of the measurement points; obtaining a current value, an environment temperature value, and temperature values of the main conduction circuit sensed by the temperature sensors, and putting them into the temperature analysis model to obtain temperature values or temperature-rise values of the measurement points in the circuit; and obtaining limit values of the virtual temperature measurement points in the main conduction circuit using the values to normalize the values, and assessing the health condition of the switchgear according to the values.

This invention belongs to the field of distribution box technology and relates to an explosion-proof and corrosion-resistant distribution box. The invention includes a box body, a mounting plate, and heat dissipation components. A door is provided on the front side of the box body, and the mounting plate is mounted on the box body. A circulation channel is opened inside the mounting plate, and the circulation channel communicates with a liquid container. A clearance groove is opened on the outer side of the box body, and multiple heat dissipation components are arranged in the clearance groove. Each heat dissipation component includes a first heat dissipation fin and a second heat dissipation fin. The first and second heat dissipation fins are rotatably connected by a rotating shaft. A second sliding groove and a limiting groove are opened on the top and bottom walls of the clearance groove, and a second sliding rod is slidably arranged in the second sliding groove. When the temperature inside the box rises to a certain level, the operating power of the water pump increases, the heat dissipation components expand further away, and the first heat dissipation fin, the second heat dissipation fin, and the inner wall of the clearance groove form a cooling chamber. The coolant circulates between the circulation channel, the clearance groove, and the liquid container, improving the cooling efficiency of the box body and causing the temperature of the box body to drop rapidly.

The invention discloses an intelligent temperature regulation and control device for a GIS control cubicle, and relates to the technical field of control cubicles, the intelligent temperature regulation and control device comprises a regulation and control box body and a temperature control assembly, and the temperature control assembly is used for switching a refrigeration mode and a heating mode of the device. According to the GIS control cabinet, the temperature control assembly is installed, stable regulation and control of the temperature in the cabinet are achieved, the temperature in the GIS control cabinet is prevented from being too high or too low through switching of the heating mode and the refrigeration mode, the stability of equipment performance is improved, and the service life of equipment in the cabinet is prolonged.

The present invention relates to a sliding compensator (1) for a gas-insulated electrical power transmission device, comprising a first pipe section (2) and a second pipe section (3) which are coaxially aligned and movable relative to each other along a principal axis (100), wherein the first and second pipe sections (2, 3) each define a portion of an encapsulation volume (90). Furthermore, a piston element (4) is provided, which is rigidly connected to the first pipe section (2), and a cylinder wall (38) is rigidly connected to the second pipe section (3), wherein the piston element (4) is fitted in a sealing and slidable manner between an inner surface of the cylinder wall (38) and an outer surface of the second pipe section (3), thereby defining a compensation volume (92). The rigid connection between the first pipe section (2) and the piston element (4) is established by means of a clamping ring (6).

The application discloses a kind of gas insulation high-voltage combined electric appliance, including pressure increasing mechanism, cooling mechanism, collection mechanism, control cabinet, circuit breaker, mutual inductor, outgoing line switch, voltage transformer, the pressure increasing mechanism includes protective housing, pressure increasing motor, half gear, rack, pressure increasing piston, slide bar, separation cylinder, second pressure increasing pipe, second pressure increasing pipe, air inlet pipe, line pipe, the protective housing is fixedly arranged in the outside of pressure increasing mechanism, the pressure increasing motor is fixedly connected with the inside of protective housing, the output shaft of the half gear is fixedly connected with pressure increasing motor. By setting pressure increasing mechanism, the pressure of sulfur hexafluoride gas can be additionally increased when the device is arc extinguishing, so as to improve the gas molecular density, and then improve the arc extinguishing performance of the device.

This invention provides an intelligent pressure relief device for power distribution cabinets based on arc suppression, belonging to the field of power distribution cabinet pressure relief devices. It includes a cabinet body and a cabinet door. The cabinet door is rotatably connected to the side wall of the cabinet body via multiple hinges. An outer shell is fixedly connected to the outer wall of the cabinet body, and a baffle is provided on the outer wall of the outer shell. A pressure relief port is provided on the side wall of the cabinet body, and a sealing plate is provided on the outer wall of the cabinet body. It also includes: an auxiliary component located inside the outer shell, used to prevent high pressure from forming inside the cabinet and to cool the cabinet; a trigger component located below the auxiliary component, used to prevent open flames from forming inside the cabinet; and a reinforcement component located inside the cabinet body, used to improve the stability of the cabinet door. This invention, through the pushing of the sealing plate, drives the fixed rod to move, causing the end of the lever to press against the push plate, allowing carbon dioxide to be injected into the interior of the cabinet, reducing the possibility of open flames.

A cable fixation system includes a cable strip and a cable rack. The cable rack is configured to be mounted to a cable compartment of a low voltage, medium voltage, or high voltage switchgear. The cable rack comprises at least one hole. A first end of the cable strip is configured to connect to a second end of the cable strip. The cable strip is configured to fix or clamp a cable of the low voltage, medium voltage, or high voltage switchgear, and wherein to fix or clamp the cable: the cable strip passes through one or more holes of the at least one hole of the cable rack, the cable strip loops round at least a part of the cable, and the first end of the cable strip is connected to the second end of the cable strip.

The earthing switch (50) comprises a fixed contact (53) installed in a tank (51) filled with insulating gas, a movable contact (54) installed in the tank (51) so as to be movable between a closing position where it contacts the fixed contact (53) and a breaking position where there is a gap between the fixed contact (53) and the movable contact (54), and an operating device (55) installed outside the tank (51) for causing the movable contact (54) to perform closing and breaking operations, the fixed contact (53) comprises a fixed contactor (531) connected to the electrical circuit conductor (52), the movable contact (54) comprises a movable contactor (541) inserted into the fixed contactor (531) at the closing position and in contact with the fixed contactor (531), and the movable contactor (541) comprises a double cylindrical section (562) in which a first puffer chamber (571) and a second puffer chamber (572) are provided separately, for spraying gas toward the fixed contactor (531) during breaking operation.

The invention relates to the technical field of ring main units, in particular to a ring main unit for a low-voltage chamber, which comprises a ring main unit body, an air inlet shell is arranged in the ring main unit body, an air inlet fan is slidably arranged in the air inlet shell, the top end of the air inlet fan is fixedly connected with the inner wall of the ring main unit body, and the bottom end of the air inlet shell extends to the lower part of the ring main unit body. A first filter screen is fixedly connected in the air inlet shell, an air outlet hole is formed in the top end of the ring main unit body, and a second filter screen is fixedly connected in the air outlet hole; a worker does not need to manually clean the first filter screen, dust and impurities can be collected in the collecting unit, the cleaned dust and impurities are prevented from being attached to the first filter screen again, the dust is guided to the collecting unit and locked through the sealing function of the collecting unit and the sealing plate in the non-cleaning state, and the cleaning efficiency is improved. And a dust diffusion path is cut off.

The invention relates to the technical field of switch cabinets, in particular to an environment-friendly gas insulation inflatable switch cabinet which comprises a control cabinet and an inflation box, the lower end of the inflation box is fixedly connected with multiple sets of mounting frames, the lower ends of the mounting frames are fixedly connected with the upper wall of the rear half part of the control cabinet, and the left side and the right side of each mounting frame are fixedly connected with protective covers. An electrical part is installed on the inner side of the inflation box, multiple sets of bus expansion connectors are fixedly connected to the left side and the right side of the upper end of the inflation box, a three-stage heat dissipation assembly is installed in the inflation box, and the three-stage heat dissipation assembly comprises a heat conduction piece, a heat dissipation piece, an environment temperature sensor, a distributed optical fiber temperature measurement sensor, a semiconductor refrigeration piece, a refrigeration outer machine and a refrigeration inner machine. Splicing pieces are installed on the left side and the right side of the control cabinet. The three-stage heat dissipation assembly is matched with the empty space to dissipate heat in the inflation box, the heat dissipation effect in the inflation box is effectively improved, meanwhile, the cooling mode is intelligently selected according to the temperature, the energy consumption of equipment is reduced, and the use safety of the equipment is improved.

The invention relates to an under-pressure leaking stoppage method for gas leakage of a high-voltage switch flange gap. The under-pressure leaking stoppage method comprises the steps that the surface of a high-voltage switch leakage flange is polished and cleaned; the two sides of the leakage flange are each provided with at least one sealing piece, and the sealing pieces surround the outer circumferential face of the air chamber cylinder by one circle and are attached to the outer circumferential face in a gapless mode. An elastic sealing layer is wound on the peripheries of the leakage flange and the sealing piece; fastening pieces are installed, the elastic sealing layer and the sealing pieces are tightly fixed to the peripheral face of the air chamber cylinder of the switchgear, and the fastening pieces provide radial pressing force for the air chamber cylinder; and winding and curing the high-strength pressure-resistant layer. Through the composite design of sealing, elastic buffering, high-strength pressure resisting and pressing, reliable sealing under the high-pressure working condition is achieved.

The invention relates to a safety valve for a pressure barrier plate (7) of a gas insulated switchgear, comprising a longitudinal sleeve (2) extending along an axis (AA') and having a 1st end (23) and a 2rd end (25), a pin (1) extending in said sleeve between a 1st end (11) and a 2nd end (13), said 1st end (11) of said pin bearing a 1st end cap (10), said 2nd end (13) of said pin bearing a 2nd end cap (3), a 1st compression spring (4) in a 1st compartment (28) inside said sleeve, a 2nd compression spring (5) in a 2nd compartment (29) inside said sleeve, said 1st spring (4) and said 2nd spring (5) respectively pushing said 2nd end cap (3) and said 1st end cap (10) towards opposite directions along said axis (AA').