42results about How to "Guaranteed flow capacity" patented technology

The invention discloses a detachable busbar for a GIS. The busbar comprises a drum portion, conducting rods, a fixed conductor assembly, wherein the drum portion comprises a plurality of cases which are serially arranged at intervals, a flexible connecting drum is detachably connected between two adjacent cases, each case is provided with a hand hole detachably connected with a hand hole cover, the conducing rods are connected in the drum portion, the ends of the conducting rods are connected with the fixed conductor assembly, and the position of the fixed conductor assembly corresponds to the position of the hand hole. The fixed conductor assembly comprises two conductor contact seats and a fixed conductor, wherein the two conductor contact seats are detachably connected with adjacent ends of two adjacent conducting rods respectively, the fixed conductor is provided with a U-shaped opening seat which is provided with a U-shaped opening and arranged between the two conductor contact seats, a fastener is arranged at the U-shaped opening, and the conductor contact seats and the U-shaped seat can be detachably connected through the fastener. The busbar has the advantages of being capable of maintaining the through-current capacity of conductors and convenient to assemble and disassemble.

The invention relates to a busbar assembly and a busbar connecting structure. When the busbar assembly disclosed by the invention is used for being connected with GIS devices, a front-section busbar and a rear-section busbar are connected with two GIS devices respectively, the front-section busbar and the rear-section busbar are connected with a corrugated pipe between the front-section busbar and the rear-section busbar through a busbar connecting structure, when the two GIS devices generate mismatching in the vertical direction, the corrugated pipe between the front-section busbar and the rear-section busbar is deformed by stress, the busbars are prevented from being damaged by stress to guarantee the flow capacity of shells of the busbars, a flow guide row set is arranged between the front-section busbar and the rear-section busbar through electric conduction connection, and the front section and the rear section of a first flow guide row in the flow guide row set are articulated and connected through an articulated shaft of which an axis is vertical to the extension direction of the corrugated pipe, so that the front section and the rear section of the first flow guide row can rotate relatively so as to adapt the mismatching in the vertical direction, or the front section and the rear section of the first flow guide row are articulated and connected through a universal hinge, so that the first flow guide row can adapt deformation in various directions.

The invention discloses a high-voltage cable pluggable-type intermediate connector for test and a cable test device. At present, a large number of defect simulation tests are carried out on high-voltage cable intermediate connectors in China; and however, the intermediate connectors are single in structure, and the intermediate connectors need to be destroyed when observing defects, such process is irreversible and may cause damage to the defect part, and judgment of the test result is interfered directly. The high-voltage cable pluggable-type intermediate connector comprises two sections of cable conductors. The tail end of each of the two sections of cable conductors is sleeved by a contact. The two contacts are in pluggable connection with the two ends of a tubular metal shield cover respectively. The high-voltage cable intermediate connector adopts a non-fixed pluggable structure; the band-type contacts can realize tight connection between the conductors and the metal shield cover, thereby ensuring large-current flow capacity; and the pluggable intermediate connector is wholly placed on a mobile base, so that the defect part can be exposed by moving metal platforms so as to observe and adjust defect conditions and facilitate test implementation.

The invention discloses a miniature ultra-low capacitance solid discharge tube and a manufacturing method thereof. A boron-based region P is arranged on the solid discharge tube, a phosphorus diffusion buried layer N- which is partially overlapped is arranged on one side of the boron-based region P, a first phosphorus diffusion region N+ is arranged in the boron-based region P, and a plurality ofshort-circuit holes are arranged in the first phosphorus diffusion region N + to form a cellular cathode. A boron region P and a second phosphorus diffusion region N+ are arranged below the solid discharge tube, and the boron region P and the second phosphorus diffusion region N+ are arranged at intervals to form a one-way chip anode structure. In the invention, on the basis of an original low-capacitance structure design, a N- buried layer is added to the cathode so that heat sink of each cellular cathode is increased, and a flow capacity is improved on the basis of a same chip area. A boronregion and a second phosphorus diffusion region N+ are arranged in an symmetrical mode, reverse voltage drop of a single discharge tube is eliminated, and based on the design, an area of an original chip can be reduced so that the area of a PN junction is reduced, and a junction capacitance is greatly decreased.

The present invention provides a fixed contact and a fixed contact module, and a GIS isolation switch. The fixed contact module comprises a fixed contact and an arcing contact, the fixed contact comprises a hollow contact seat, one end, in an axial direction, of the hollow contact seat is provided with an opening configured to allow a moving contact to plug, the other end of the hollow contact seat is provided with a fixed connection structure connected with an insulator, the inner cavity of the hollow contact seat is provided with an installation support, and the arcing contact is installed on the installation support and is extended into the opening. According to the design of the structure, the fixed contact module only needs connection of the fixed contact and the insulator with no need for preservation of a connection position of the arcing contact on the insulator so as to reduce the size of an insertion piece on the insulator; and moreover, the arcing contact is installed on thefixed contact to shorten a distance between the arcing contact and the plugging position, the breaking of the arcing contact is not easy to happen, and the reliability is high.

The invention discloses an outgoing line insulation sleeve, which comprises an outgoing line sleeve main body, a heightening joint, a silicone rubber insulation piece, a fastening connection device and a silicone rubber umbrella skirt. The heightening joint can be spliced with the outgoing line sleeve main body to increase the outer insulation height of the outgoing line sleeve. The silicone rubber insulation member is in interference fit with the outgoing line sleeve main body and the heightening joint to form a stable insulating layer to prevent the electrified body at the joint portion frombeing discharged to the outside. The silicone rubber umbrella skirt is wrapped in the surface of an epoxy insulation layer of the outgoing line insulation sleeve. The invention provides an outgoing line insulation sleeve, which is a combined splicing type outgoing line insulation sleeve, and can be configured with a suitable outer insulation height of the sleeve according to different needs. Thecost of raw materials and the weight of the product are reduced, the installation strength is increased, the product umbrella skirt is not easy to damage, and at the same time the installation and positioning of the outgoing line insulation sleeve is facilitated.

The invention relates to a three phase earthing switch structure driven by duplex pull rods and distributed in an I shape. The structure is characterized in that the structure comprises an A phase moving contact component, a B phase moving contact component and a C phase moving contact component which are distributed in the I shape, one ends of the A phase moving contact component, the B phase moving contact component and the C phase moving contact component are connected with an A phase static contact component, a B phase static contact component and a C phase static contact component respectively, and the other ends of the A phase moving contact component, the B phase moving contact component and the C phase moving contact component are tightly embraced with an A phase rotating shaft, a B phase rotating shaft and a C phase rotating shaft respectively. The three phase earthing switch structure driven by the duplex pull rods and distributed in the I shape has the advantages that a main conducting element has self-compression capability, the structure is simple, the performances are reliable, the entire earthing switch is in a detachable structure, convenient to install, flexible and wide in application, the adjustment is facilitated, and the through-current capability of the switch can be adjusted by increasing or reducing the number of contact fingers of the moving contacts.

An ultrahigh-pressure long-service-life throttling valve for testing a high-pressure pump in petroleum drilling comprises a valve body assembly and a valve element assembly, and the valve element assembly is arranged in the valve body assembly in a sliding mode. A plurality of valve seats are fixedly arranged in the valve body assembly in an up-and-down overlapping mode, a plurality of valve elements are fixedly arranged in the valve element assembly in an up-and-down overlapping mode, and the valve seats are matched with the valve elements to form gap throttling conical rings and backflow cavities which are arranged in a multi-stage series connection mode. When ultrahigh-pressure fluid flows through the ultrahigh-pressure throttling valve, the pressure borne by each stage of gap throttling cone ring and the backflow cavity is greatly reduced through throttling of the gap throttling cone rings and the backflow cavity which are connected in series in multiple stages, and the erosion problem of the throttling valve is greatly solved; due to the design of supporting and guiding of the two ends of the valve element assembly, the anti-vibration performance of the throttling valve is greatly improved; the design of the minimum safe throttling gap is adopted between the valve element and the valve seat, even if the valve element is broken, the minimum throttling gap is still kept between the valve element and the valve seat, a throttling channel cannot be blocked, and therefore impact damage to a high-pressure pump and testing equipment cannot be generated.

The invention relates to a static contact for a switch cabinet, and the switch cabinet. The static contact for the switch cabinet comprises: a contact body used for being fixed in a contact box of the switch cabinet, wherein the contact body comprises an insertion section, the insertion section is of a cylindrical structure and is used for allowing a contact arm on a circuit breaker to be inserted, and an annular contact finger installation groove is formed in the inner wall face of the insertion section; an annular contact finger mounted in the contact finger mounting groove and used for being in conductive contact with a contact arm on the circuit breaker; and an insertion section cooling fin arranged at the position, corresponding to the annular contact finger, of the outer peripheral surface of the insertion section. The static contact and the contact arm are in direct plug-in fit, so that the centering of the contact arm and the static contact can be better realized, the contact arm and the static contact are better in contact, and the through-current capability is ensured; and the insertion section radiating fins are arranged at the positions, corresponding to the annular contact fingers, of the outer peripheral surface of the insertion section, so that natural dissipation of heat is realized, the cost is reduced, the partial discharge sound in the switch cabinet cannot be masked, and timely discovery of insulation faults is facilitated.

The invention discloses a targeted filtration device for composite filtration. A coarse filter screen is arranged on the surface of a cylinder body, a first cover plate and a second cover plate are respectively arranged at the upper end and the lower end of the cylinder body, an outlet pipe seat is arranged at the lower end of the second cover plate, and a built-in filter element is arranged in the cylinder body above the outlet pipe seat; and a plurality of magnetic bar units are arranged in the barrel body at intervals in the axial direction of the barrel body, the magnetic bar units are fixed through a chuck arranged in the barrel body, the flow field range controlled by each magnetic bar unit is 0-30 mm, and the total through-flow area of the barrel body is larger than 3-4 times of the through-flow area of a pipeline. The filtration device for composite filtration has obvious use effect and strong application adaptability, can achieve the purpose of targeted filtration, and does not cause harm to oil liquid due to type selection of filter materials.

The invention relates to the technical field of electric power system insulation and over-voltage protection technology and equipment, in particular to a reinforced lightning-protection insulation supporting column of an annular valve plate structure. The reinforced lightning-protection insulation supporting column comprises an epoxy resin core rod and an insulation cylinder, wherein the insulation cylinder is installed outside the epoxy resin core rod in a sleeving manner, the upper end of the insulation cylinder is provided with an upper fixed flange, the lower end of the insulation cylinderis provided with a lower fixed flange, an annular metal oxide valve plate group is arranged between the epoxy resin core rod and the insulation cylinder, and the epoxy resin core rod, the annular metal oxide valve plate group and the insulation cylinder are successively arranged in a sleeving manner, poured, sealed and arranged seamlessly. Compared with the ceramic high-voltage insulation supporting column, the reinforced lightning-protection insulation supporting column is light in weight; by an unique integrated structure, the comprehensive operation cost is low; the metal oxide valve plategroup of the annular cylindrical structure is uniform in field intensity, good in heat dissipation capacity, high in repetition resistance and high in through-current capability, so that the residuallightning over-voltage borne by power transformation equipment is lower, and the safety performance is higher.

The invention relates to a double-column horizontal rotation type isolation switch and a wiring assembly, and can solve the problems that a wiring assembly in the prior art adopts a conductive band structure, so that the size of a wiring seat is large, the structure is heavy, and the requirements on an insulating support column and an operating mechanism are high. The wiring assembly for the isolation switch comprises: a wiring seat which is provided with an installation cavity, wherein the cavity wall of the installation cavity is provided with a through hole; a wiring terminal which comprises a conductive main shaft, wherein a conductive main shaft of the wiring terminal is inserted into the mounting cavity through the through hole, so that the wiring terminal is rotationally assembled on the wiring seat; and a conducting strip which is fixedly connected in the mounting cavity of the wire holder and elastically abuts against the outer side surface of the conductive main shaft. The conductive sheet is always elastically abutted against the conductive main shaft and does not need to swing in the wire holder, so that an operator does not need to reserve a space for avoiding the conductive sheet in the wire holder, the whole wire holder can be more compact in structure, the light weight of the wiring assembly is realized, and the requirements on the insulating support column andthe operating mechanism can also be reduced.

The invention relates to a copper terminal for outdoor cable bypass operation, which belongs to the technical field of structures of live overhaul devices. The copper terminal of the invention comprises a copper terminal body and a bypass cable connection device communicated with the copper terminal body, wherein the bypass cable connection device is arranged on the copper terminal body and can be assembled and disassembled according to use requirements. The copper terminal for outdoor cable bypass operation has the advantages that the structure is delicately designed; convenience is provided for non-outage operation of the cable; elements can be replaced conveniently for the bypass; the operation time of the live operation is reduced; electric energy supply is added; and power supply reliability is improved.

The present invention discloses a connection device and a method for parameter matching by employing the same. The connection device comprises a first port which has one end connected with a microstrip line and has the other end taken as a data interface; a second port which has one end connected with the microstrip line and has the other end taken as the connection interface of an tunable antenna feed circuit; and a third port which has one end connected with the microstrip line and has the other end taken as the connection interface of an antenna correction radio-frequency channel. According to the technical scheme, the tunable antenna feed circuit and the antenna correction radio-frequency channel are connected with the first port through the microstrip so as to ensure the matching requirement of the antenna correction radio-frequency channel while ensuring the flow capacity and the lightning-stroke protection requirement of the common wiring part.

The invention discloses a targeted filtering device for high-viscosity gear lubricating oil, which is characterized in that the surface of a cylinder is provided with a coarse filter screen, the upper end and the lower end of the cylinder are respectively provided with a first cover plate and a second cover plate, and the lower end of the second cover plate is provided with an outlet pipe seat; and a second chuck, a first chuck and a third chuck are sequentially arranged in the cylinder from top to bottom, a plurality of magnetic rod units are arranged in the cylinder at intervals in the axial direction of the cylinder and sequentially penetrate through the second chuck, the first chuck and the third chuck, and the flow field range controlled by each magnetic rod unit ranges from 0 mm to 30 mm. And the total through-flow area of the cylinder body is larger than 3-4 times of the through-flow area of the oil pump outlet pipeline. The device has obvious use effect and strong application adaptability, can achieve the purpose of targeted filtration, and does not cause harm to oil liquid due to type selection of filter materials.

An optical module provided by the invention comprises a circuit board, the circuit board comprises an upper surface, a middle layer and a lower surface, the upper surface is provided with an upper power supply structure, the upper power supply structure comprises a first power supply pin and a first power supply pin connecting end, the middle layer is provided with a power supply metal layer on a projection area of the upper power supply structure, and the lower surface is provided with a lower power supply structure. The lower power supply structure comprises a second power supply pin and a second power supply pin connecting end, on one hand, the area of the first power supply pin or the second power supply pin is designed to be larger than that of other pins, so that the through-current capability of a power supply signal can be improved; in the other direction, the area of the middle power supply metal layer is larger than the area of the upper power supply structure and the area of the lower power supply structure at the same time, namely the area of the middle power supply metal layer is designed to be large, so that the through-current capability of a power supply signal can be ensured, parasitic parameters and crosstalk are smaller, and the power consumption requirement of a higher-rate optical module is met.