658 results about "Airbox" patented technology

The invention relates to a simplified gas delivery system for atomic layer etching. According to the system, the overall cost is reduced by omitting the requirements of a gas tank and a pressure gauge. A preset mass flow controller (MFC) and a three-way valve can accurately control the gas flow in the surface modification step and the sputtering step of the ALE process. By means of the self-limiting property of the ALE process, the system does not need to maintain the steady-state pressure of the chamber, and the efficiency can be improved only by controlling the volume of the conveyed gas.

The utility model provides a ring main unit. The ring main unit comprises a gas tank, a fixed frame fixed on the inner side wall of the gas tank, a circuit breaker switch and a three-position switch, wherein the circuit breaker switch and the three-position switch are positioned in the gas tank. The solid-sealed polar pole of the circuit breaker switch comprises a polar pole body, a movable end shielding seat and a static end shielding seat, the movable end shielding seat and the static end shielding seat are located at the two ends of the polar pole body, the movable end shielding seat and the static end shielding seat can wrap the two ends of the polar pole body respectively, and therefore the electrical connection position of the polar pole body is electrically isolated from the external environment; the pole body, the moving end shielding seat and the static end shielding seat are cast into a whole through insulating resin, so that the consistency of the pole is improved; the grounding shielding seat adopts an integrally formed metal piece, and can uniformly wrap a plurality of grounding contacts in a shielding space, so that the electric field distribution of the grounding contacts is optimized. According to the ring main unit, dry air can be used as insulating gas, miniaturization of the ring main unit is achieved, and the corresponding insulating performance is met.

The invention relates to the technical field of ring main units, and provides a self-adaptive protection device for a ring main unit, which comprises a cabinet body, a gas tank mounted on the back of the cabinet body and filled with environment-friendly insulating gas, and a pressure relief pipe with one end communicated with the top of the gas tank and used for pressure relief of the gas tank, the top of the gas tank is provided with a pressure relief regulation and control assembly, and the top of the pressure relief regulation and control assembly is provided with a dustproof assembly. The pressure relief regulation and control assembly comprises a funnel-shaped main speed discharging barrel arranged at the top of the air box and a butt joint sleeve for connecting the main speed discharging barrel with the pressure relief pipe in a sealed mode. During use, the main pressure relief channel and the branch slow-heating pressure relief channels are utilized and respond to instantaneous high-pressure impact and continuous hot pressing respectively, so that deformation and damage of the gas tank caused by instantaneous arcing overpressure are effectively prevented, and the potential safety hazard that pressure accumulation caused by abnormal slow temperature rise cannot be released in time is eliminated; and self-adaptive protection of the ring main unit gas tank is realized.

The invention relates to the technical field of aero-engines, and particularly provides a variable cycle engine duct experiment system and experiment method. A variable cycle engine duct experiment system comprises: a first combined experiment member comprising a main flow valve and a shunt ring; the second combined experiment piece comprises a first outer culvert, a second outer culvert and an ejector; the inlet of the variable capacitor second external culvert experiment piece is connected with the external culvert outlet of the shunt ring, and the outlet is connected with the second external culvert; an inlet of the first gas collection tank is communicated with an inner culvert outlet of the shunting ring; the bypass ratio adjusting valve is used for adjusting the bypass ratio at the shunting ring; an inlet of the second gas collection tank is connected with an outlet of the first gas collection tank through an inner culvert pressurization simulator, and an outlet is communicated with the first outer culvert; an inlet of the variable capacitor confluence duct experiment piece is communicated with the second outer duct; and the outer culvert throttle valve is connected with an outlet of the variable capacitor confluence culvert experiment piece. According to the technical scheme, engine duct experiments in multiple modes can be achieved, and the experiment efficiency is improved.

The invention belongs to the technical field of electrical equipment, particularly relates to a rear cable outlet inflatable ring main unit for a primary and secondary fusion ring main unit, and aims to overcome the defects that certain inconvenience exists when an inflatable ring main unit is inflated and gas entering the inflatable ring main unit cannot be cyclically dehumidified in the daily use process in the prior art. The power distribution station is provided with an opening, two door plates are symmetrically hinged to the opening of the power distribution station, a plurality of primary devices are installed in the power distribution station side by side at equal intervals, and air boxes are fixedly installed on the primary devices. At the moment, after the dry air is input through the butt joint pipe on one side, the dry air can be supplied into the multiple air boxes at the same time, in the daily use process, the air in the air boxes can be dehumidified in a circulating mode, and therefore secondary equipment located in the air boxes can stably operate and work.

The utility model provides a chemical plant waste gas detection collecting device which comprises a gas storage tank, a hand-held rod fixedly connected to the top of the gas storage tank, foot pads fixedly connected to four corners of the bottom of the gas storage tank, a gas outlet pipe fixedly connected to the left side of the gas storage tank, a first electric control valve fixedly sleeved on the outer side of the gas outlet pipe, and a pressure monitoring mechanism arranged on the right side of the gas storage tank. The right side of the pressure monitoring mechanism is provided with an exhaust pipe, the right end of the exhaust pipe is fixedly connected with a threaded connector, the right side of the exhaust pipe is fixedly connected with a sealing ring in a sleeving mode, the threaded connector is sleeved with an internal thread connecting sleeve, the right end of the internal thread connecting sleeve is fixedly connected with a connecting hose, and the right end of the connecting hose is provided with an exhaust filtering mechanism. The pressure monitoring mechanism is arranged, so that the use requirements under different conditions can be met, the practicability is high, meanwhile, the sealing condition can be detected, a user can know the leakage at the first time when the leakage occurs, and the safety is improved.

A motorcycle with a single transmission breather that is mounted over the transmission case. Crank case gas passes through the breather. Oil separated from the breather drains back to a cavity under the breather. Gases separated in the breather travel through a breather hose to an airbox. The breather utilizes a sloped incline in order to prevent oil that separates out from pooling.

The invention discloses a compact common box type environment-friendly gas ring main unit and a working method, and belongs to the technical field of high-voltage environment-friendly gas switch cabinets. The ring main unit comprises a gas tank, a cabinet body and an instrument chamber. The gas box is placed on the cabinet body, the instrument chamber is placed on the top of the cabinet body and is arranged in an upper-middle-lower mode in the whole space, a front plate in the gas box is provided with a five-station switch body integrating an isolating switch and a circuit breaker, a top plate in the gas box is fixedly provided with a supporting insulator, one end of the supporting insulator is fixedly connected with a main busbar, and the main busbar is provided with a static knife. One side plate of the gas box is fixedly provided with a side expansion sleeve with an umbrella skirt, one end of one end of the main busbar is connected with one end of the side expansion sleeve with the umbrella skirt, and the bottom of the gas box is provided with a pressure release valve. And reasonable layout is realized in a limited space, modular assembly is realized, and the insulation safety of main elements in the gas tank is ensured.

1. The name of the design product: Air. 2. The use of the design product: used for Carplay, Android Auto, HiCar, Android system, and original car upgrade intelligent multimedia function, and smart phone mirror projection, wireless interconnection control. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention relates to the technical field of ABS material production, in particular to ABS material production equipment and a preparation method thereof.The production equipment comprises a rack and a sealing tank, a plurality of feeding pipes are arranged at the top of the sealing tank, a spiral extruder is arranged at the bottom of the sealing tank, a gas tank is arranged in the sealing tank, and the feeding pipes extend to the lower portion of the gas tank; a plurality of air inlets are formed in the bottom of the air tank; an air outlet pipe arranged at the top of the air tank extends out of the sealing tank; an annular mounting frame is coaxially arranged in the sealing tank, a stirring unit is further arranged in the sealing tank, the stirring unit ensures that a rotating ring is rotationally mounted on the annular mounting frame, and a plurality of vibrating rods are mounted on the rotating ring; according to the technical scheme, when the rotating ring of the stirring unit rotates, the vibrating rod stirs materials, the vibrating rod vibrates in the vertical direction to vibrate and exhaust the materials, gas can be exhausted through the gas outlet pipe and treated in a centralized mode, and harmful gas generated in ABS production is prevented from affecting workers.

The invention discloses a 40.5 kV gas tank with a tank type structure and power switch equipment. The gas box comprises a circuit breaker switch gas chamber and a three-position switch gas chamber which adopt tank structures and are connected through a sealing connecting plate, and the gas box contains corresponding parts and is reasonable in layout. The circuit breaker switch air chamber is provided with a circuit breaker shell, a circuit breaker switch inside the circuit breaker shell and the like, and the three-position switch air chamber is provided with a three-position shell, a grounding mechanism, a movable contact seat mechanism and the like and is further provided with a magnetofluid driving movable contact. The unique tank body structure enables the electric field to be uniformly distributed, enhances the insulating property, effectively prevents the gas tank from deforming, and ensures the matching precision of components. Meanwhile, independent operation of the air chamber is achieved, overhaul and maintenance are convenient, and power failure time and range are reduced. According to the invention, environment-friendly insulating gas is adopted, and innovative structural design is combined, so that the defects of traditional equipment in multiple aspects of environmental protection, structural strength, electric field distribution, maintenance convenience and the like are overcome, the overall performance and reliability of the equipment are improved, and the device is suitable for a 40.5 kV power system.

The invention discloses a cast rolling production degassing box which comprises a supporting base fixedly installed on the ground, a degassing box body is fixedly installed on the upper surface of the supporting base, a supporting frame is fixedly installed on the outer portion of the rear side of the degassing box body, and a gas storage box storing inert gas is fixedly installed on the upper surface of the supporting base. A first air pump communicated with the air storage box is fixedly installed on the upper surface of the air storage box, the first air pump is communicated with a containing groove formed in the bottom end of the interior of the degassing box body through a conveying pipe, the air storage box is connected with a preheating mechanism in the degassing box body, and an air brick is fixedly installed at the lower end of the interior of the degassing box body; and a stirrer is rotationally mounted above the air brick. According to the degassing box for cast-rolling production, the heat exchange pipeline is heated through the temperature of molten aluminum, inert gas in the gas storage box circularly flows in the heat exchange pipeline through cooperation of the second gas pump and the connecting pipe, the purpose of preheating gas is achieved, and the situation that the molten aluminum is solidified due to the low temperature when the gas is introduced into the molten aluminum is reduced.

The invention relates to the technical field of heat treatment equipment, in particular to metal part heat treatment equipment and method.The metal part heat treatment equipment comprises a foundation and a closed box, a track extending into the closed box is laid on the foundation, a workpiece conveying trolley is arranged on the track and provided with at least one set of hanging discs, and workpieces are hung on the lower sides of the hanging discs; a heat treatment furnace and an immersion tank are arranged on the lower side of the closed box; the side edge of the closed box is provided with an inlet / outlet corresponding to the track, the inlet / outlet is provided with a sealing door, the closed box is provided with an exhaust pipe, the exhaust pipe is connected with a vacuum pump and comprehensive waste gas treatment equipment, the closed box is communicated with a gas supply pipe, the gas supply pipe is connected with a gas distribution box, and the gas distribution box is connected with a gas storage tank; the closed box is arranged on the heat treatment furnace, the internal environment is isolated, the heat treatment reliability and efficiency are improved, meanwhile, during annealing heat treatment, the time of a workpiece in the heat treatment furnace can be shortened, and the use efficiency of the heat treatment furnace is effectively improved.

The utility model provides a chambered bag-type dust collector, belonging to the technical field of bag-type dust collectors, including an air box chambered cylinder, a plurality of steel cages and filter bags are arranged on both sides of the interior of the air box chambered cylinder, a vibration cleaning assembly is arranged on the top of the steel cage, and an equal distribution cleaning assembly is arranged below the steel cage. In the utility model, the cylinder drives the sliding plate and the rack to move back and forth linearly, and the gear drives the lead screw to rotate, and then the linkage effect between the lead screw and the threaded sleeve is used to transmit power to the threaded sleeve, and under the restriction of the circular through hole and the round rod, the threaded sleeve can only drive the fixed rod and the protrusion to move downward, and the protrusion will squeeze the roller during the downward movement, so that the roller drives the fixed plate, the guide rod and the arc block to move in the direction of the filter bag, so that it generates a certain vibration phenomenon during the filtering process, so as to reduce the adhesion of dust gas on its surface, thereby improving the applicability of the equipment.

The invention discloses a switch cabinet using clean air as an insulating medium, and particularly relates to the technical field of electrical equipment, the switch cabinet using clean air as the insulating medium comprises a cabinet body, an air box, a fixed disc, a sealing spacer bush, a cylindrical sleeve, a clamping sleeve and a sealing ring; a contraction unit; the air supplementing unit is arranged in the air box and used for supplementing air into the air box when the clamping sleeve shrinks. According to the invention, the contraction unit triggers and drives the clamping sleeve to generate elastic contraction deformation, so that the hole wall of the cable penetrating hole clamps the sealing ring, the sealing ring and the surface of the cable are in closer contact, the leakage phenomenon of the cable and the cable hole is reduced, in addition, when the air pressure in the air box is reduced, the air supply unit acts, and then air can be supplied to the air box. The gas pressure in the gas tank is increased, so that the positive pressure state in the gas tank is maintained in a short time, the concentration of an insulating gas medium in the gas tank is improved, and the arc extinguishing of the gas tank is prevented from being greatly influenced.

The invention relates to the technical field of gas insulation ring main units, discloses an intelligent environment-friendly gas insulation ring main unit, and solves the problem that when a gas leakage part of an environment-friendly gas tank is positioned, environment-friendly gas cannot be smoothly and sensitively captured by a gas monitor, so that the positioning difficulty of the gas leakage part of the gas tank is relatively high. Air flow generated during air leakage in the sealing cover drives the fan blades to deflect, the position of a connecting piece where air leakage occurs in the air box is determined according to the position of the driven measuring assembly, the specific direction of the air leakage position on one side of the connecting piece is determined, later maintenance is facilitated, detection is not affected by physical or chemical properties of environment-friendly gas stored in the air box, and the detection accuracy is improved. The detection effect is reliable, tracer gas is further introduced into the rubber cover, when gas leakage at the assembly position of the connecting piece is slow, the tracer gas flows into the gas detection pipe and is detected by the gas detector, the gas leakage condition can be detected, and the safety and reliability of gas leakage detection of the gas tank are further improved.

The utility model relates to a pipeline derusting device for shipbuilding, which comprises a pipe body, a positioning mechanism is arranged in the pipe body, an adjusting mechanism is arranged on the positioning mechanism, a polishing component is arranged on the adjusting mechanism, the adjusting mechanism comprises an air storage tank, a protection tank and an air pump, the air storage tank is arranged in the pipe body, and a piston cylinder is communicated with the air storage tank. A piston plate is arranged in the piston cylinder in a sliding and tight fit mode, a piston rod is fixed to one end of the piston plate, a protection box is arranged on the positioning mechanism, a rotatable rotating shaft is transversely arranged in the protection box, one end of the rotating shaft is fixed to the air storage box, and the rotating shaft is hollow. According to the pipeline rust removal device for shipbuilding, by arranging the adjusting mechanism, when the inner peripheral wall of a pipe body needs to be ground, the grinding assembly can be driven by the adjusting mechanism to be rapidly attached to the inner peripheral wall of the pipe body, then rotary grinding is conducted, the effect of removing rust on the inner wall of the pipeline for the ship is achieved, and the labor amount of workers is reduced; and meanwhile, the polishing and derusting efficiency and quality are guaranteed.

The utility model belongs to the field of electrical control boxes, and specifically relates to a novel explosion-proof electrical control box, including a box body, a control door hinged on the front of the box body, a gas box fixedly connected to the lower right end of the box body, a fixed pipe fixedly connected to the lower end of the gas box, an exhaust box fixedly connected to one end of the fixed pipe located inside the box body, a temperature-sensing starting mechanism provided on the exhaust box, a convenient ventilation mechanism provided inside the gas box, and a box door hinged on the right end of the gas box. The utility model adds structures such as gas cylinders, baffles, and limit frames inside the gas box, and can limit the gas cylinder through the connector at one end of the internal hose of the gas box, and the gas cylinder can be placed more stably by limiting the gas cylinder through the baffle and the limit frame. When the gas inside the gas cylinder needs to be replaced after the gas discharge is completed, the gas cylinder can be replaced conveniently and quickly by simply removing the connector from the gas cylinder and separating the limit frame from the gas cylinder.

The invention discloses a gas tank assembly based on a direct current GIS, and relates to the technical field of gas tanks, the gas tank assembly comprises a gas tank, a main heat dissipation structure and an auxiliary heat dissipation structure, the main heat dissipation structure comprises a flow guide heat dissipation body, the flow guide heat dissipation body is located outside the gas tank, the flow guide heat dissipation body is used for being connected with the interior of the gas tank, and the flow guide heat dissipation body is located outside the gas tank. The auxiliary heat dissipation structure is used for auxiliary heat dissipation of the flow guide heat dissipation body. Heat dissipation is conducted on the interior of the gas tank through the main heat dissipation structure, heat dissipation is further enhanced through the auxiliary heat dissipation structure, and the problem that heat dissipation treatment cannot be effectively conducted due to the fact that the temperature in the gas tank rises is solved; the problem that the insulation fault risk of equipment is increased due to performance reduction of internal insulation materials caused by the fact that heat cannot be fully dissipated in the gas tank can be solved, the service life of the equipment is prolonged, and the risk that operators are exposed to harmful gas is reduced.

The present disclosure discloses a ring main unit (RMU) comprising a gas box, a fixing frame fixed to the inner side wall of the gas box, and a circuit breaker switch located within the gas box. The circuit breaker switch includes a circuit breaker body. The circuit breaker body includes an insulating housing and a first end and a second end located at opposite ends of the insulating housing. The first end is provided with a first fixing seat, and the second end is provided with a second fixing seat. The first and second fixing seats are both metal members and each encloses a shielding space to cover the conductive members provided on the first and second ends. The first fixing seat is fixed to the fixing frame via an insulator, and the second fixing seat is fixed to the fixing frame via another insulator.

An apparatus may comprise a base member defined by a rectangular aperture configured to receive and engage an automobile intake airbox. The base member may be further defined by a perimeter surrounding the rectangular aperture and having at least one fastener or aperture configured to receive a fastener dimensioned to avoid disturbing the automobile intake airbox. A gooseneck member may be fixedly attached to the base member. The gooseneck member may have a first end opening and a second end opening, with an interior cavity configured to direct air into the automobile intake airbox from the second end opening to the first end opening. An interchangeable bell housing may be removably secured to the second end opening of the gooseneck member. The interchangeable bell housing may have a frustoconical shaped cross section on at least one plane.

The invention relates to the technical field of air tightness detection devices, in particular to a casting part air tightness detection device which comprises a rack, a press-fitting module and a transfer mechanism which are mounted on the rack, a plurality of airtight joints mounted on the press-fitting module, and plugging heads and flow guide parts which are fixedly mounted on the airtight joints, the flow guide part comprises a flow guide cover wrapping the plugging head, the flow guide cover is fixedly connected with an air box through a pipeline, an air flow detection module and an air suction pipe are installed on the air box, and the air suction pipe is communicated with an air suction pump, so that the real leakage of a workpiece and the sealing failure of the tool are effectively distinguished, and qualified workpieces are prevented from being scrapped due to misjudgment; the accuracy and reliability of a detection result are greatly improved, the maintenance cost is reduced, and the production efficiency is improved.

The invention belongs to the technical field of ring main unit equipment, and discloses a compact modular ring main unit with a cable testing function and an interlocking function. The ring main unit comprises a cable chamber and a gas box core unit fixed on the cable chamber, the front part of the gas box core unit is provided with a mechanism chamber, and the top of the mechanism chamber is provided with a control box chamber with a special-shaped design; a left load switch mechanism cover plate, a left detection facility cover plate, a circuit breaker switch mechanism cover plate, a right load switch mechanism cover plate and a right detection facility cover plate are installed right in front of the mechanism chamber. Mechanical interlocks are respectively arranged between the left detection facility cover plate and the grounding mechanism and between the right detection facility cover plate and the grounding mechanism; and manually operated interlocking devices are arranged between the left load switch mechanism cover plate and the left detection facility cover plate and between the right load switch mechanism cover plate and the right detection facility cover plate. According to the invention, the ring main unit product has modular and standardized design.

The invention discloses a material conveying device and air box head machining equipment, the material conveying device comprises a controller, an inner rotating disc (10), an outer rotating disc (20), a screening mechanism (50) and a baffle ring (30), the baffle ring (30) comprises a first baffle (41) and a discharging part (31), and in the vertical direction of the conveying device, at least part of the first baffle (41) is located above the outer rotating disc (20); in the rotating direction of the conveying device, the first baffle (41) is located on the upstream of the discharging part (31), a screening mechanism (50) is arranged between the first baffle (41) and the discharging part (31) and comprises an air blowing device (51) and a detection device (52), the air path extending direction of the air blowing device (51) faces the inner rotating disc, and the detection device (52) is arranged on the outer rotating disc. And the detection device (52) and the blowing device (51) are electrically connected with the controller. The device can realize automatic discharging of materials, and has the advantages of low noise, high speed and the like.

The invention discloses an automobile part welding platform which comprises a conveyor used for continuous welding conveying and supporting of parts. The air exhaust mechanism is arranged above the conveyor, the air exhaust mechanism comprises an air pipe, one end of the air pipe is communicated with an air box in a penetrating mode, the interior of the air box is communicated with a suction cover in a penetrating mode, the interior of the air pipe is rotatably connected with a rotating rod in a penetrating mode, and fan blades are arranged outside the rotating rod; the invention relates to the technical field of automobile part machining, and solves the problems that when an existing welding platform flue gas treatment mechanism is used, the collected flue gas is directly discharged without being purified, harm still exists, air kinetic energy is wasted, and the service life of the existing welding platform flue gas treatment mechanism is prolonged. And meanwhile, impurities filtered in the flue gas are accumulated outside a filtering structure and still need to be cleaned manually, so that time and labor are wasted in actual welding operation, and the efficiency is reduced.

The utility model provides a metal plate spliced environment-friendly gas ring main unit, which comprises a gas tank assembly body, a control chamber assembly body, a mechanism chamber assembly body and a cable chamber assembly body, one side of the gas tank assembly body is connected with the mechanism chamber assembly body through a connecting bolt, the control chamber assembly body is arranged at the upper part of the mechanism chamber assembly body, and the cable chamber assembly body is arranged at the lower part of the control chamber assembly body. A cable chamber assembly body is installed on the lower portion of the air box assembly body and the lower portion of the mechanism chamber assembly body, positioning installation holes are formed in the side faces of the air box assembly body and the mechanism chamber assembly body, and a mechanism chamber insulation fixing top plate is installed on the upper portion of the mechanism chamber assembly body. According to the utility model, the mechanism chamber insulation fixing left side plate and the mechanism chamber insulation fixing bottom plate are bent in a Z shape, and the connecting bolts are welded on the upper side of the gas box assembly body and are fixed by the nuts, so that the interference of a gas box welding seam is avoided, the assembly tolerance is not influenced by the size of the welding seam, and the consistency of the appearance size of the assembled ring main unit can be ensured; and on-site cabinet combination installation is facilitated.

This utility model relates to the field of catalytic combustion device technology, and discloses a catalytic combustion device for industrial waste gas treatment, comprising: a catalytic combustion chamber, wherein a waste gas supply pipe is installed at the inlet end of the catalytic combustion chamber; an outlet pipe is disposed at the top outlet of the catalytic combustion chamber, a hot gas supply pipe is installed at the outlet end of the outlet pipe, a gas storage tank is installed at the outlet end of the hot gas supply pipe, and a dilution gas pipe is installed at the outlet of the gas storage tank. By mixing preheated air in the gas storage tank with high-concentration waste gas through the dilution gas pipe, the concentration of high-concentration waste gas can be reduced. Simultaneously, the air is heated, which reduces interference with the waste gas temperature and prevents high-concentration waste gas from directly entering the catalytic combustion chamber. This effectively prevents a sudden temperature rise inside the catalytic combustion chamber, avoids localized high temperatures inside the catalytic combustion chamber due to waste gas concentration approaching or exceeding the lower explosive limit, and improves the safety performance of the device.

An environmentally friendly gas insulated ring network switchgear capable of automatically replenishing gas comprises a cabinet body and a gas box arranged in the cabinet body, the gas box having a main chamber for storing environmentally friendly gas for conventional use and a spare chamber for storing spare environmentally friendly gas, a one-way valve being arranged between the main chamber and the spare chamber, and also comprising a path switcher, an air pump, an accelerator, and a control system for real-time monitoring of the environmentally friendly gas concentration and the volume of the environmentally friendly gas inside the cabinet body, and controlling the path switcher to switch the gas path according to the monitored data, and controlling the accelerator to start. The beneficial effect of the present invention is that it has two modes of conventional gas circulation flow and accelerated gas flow, and the accelerated gas flow occurs when SF6 environmentally friendly gas needs to be replenished, which is determined according to the concentration and volume of SF6 environmentally friendly gas, and can ensure the safe operation of the equipment under high voltage by timely replenishing gas, reduce the occurrence of faults and power outages, and can also extend the gas replenishment maintenance cycle.

The invention provides a centrifugal coal slime water solid-liquid separator, which belongs to the technical field of coal mine solid-liquid separation, and comprises a bottom frame assembly, an outer rotary drum assembly, an inner spiral pushing assembly, a drying assembly, a conveying assembly, a primary screening assembly, a cleaning assembly and a multi-purpose blowing assembly, basic solid-liquid separation work of slime water can be completed; when rotating, the rotary drum not only can drive the conveying belt to automatically roll and convey materials, but also can drive the sieve plate in the sieve bucket to swing and rotate back and forth within a first range, so that slime water entering the inner spiral cylinder is screened and filtered in advance, large-particle substances are screened to the upper surface of the conveying belt, and meanwhile, the conveying belt is driven to rotate synchronously. A cleaning brush roller is driven to rotate, and a compressor of a telescopic air box is loosened to work, so that the conveying belt is efficiently cleaned; and the drying assembly is used in cooperation, and coal slime particles falling into the solid material box through the solid material discharging pipe and the conveying belt are automatically dried.

The invention discloses an underground structure retaining wall transportation device convenient to use, and belongs to the technical field of underground structure retaining wall transportation. The air pressure assembly comprises two telescopic columns, the outer end of any telescopic column is provided with a telescopic cylinder, and the end, away from the telescopic column, of the telescopic cylinder is provided with an air box; the reset assembly comprises a first sliding cylinder installed at the end, close to the air box, of the inner side wall of the transport box. The detection assembly comprises a controller mounted at one end of the outer side wall of the transportation box; and the mounting assembly comprises a mounting box mounted at the outer end of the transport box. Through the first protection plate and the second protection plate in the transportation box, when the underground structure retaining wall enters the placement plate, the upward moving height of the protection plates can be automatically adjusted according to the air pressure of the air pipe entering the transportation box; damage caused by falling when the underground structure retaining wall needing to be transported is higher than the transport box can be effectively prevented, and the cost of an enterprise is reduced.