197results about How to "Avoid leakage accidents" patented technology

The invention discloses an anti-seepage and leak-blocking construction method for excavation of a subway foundation pit in a soft soil area, which comprises the following steps: 1) joint pre-reinforcement construction of an underground continuous wall: constructing a pre-reinforcement structure of a high-pressure rotary jet grouting pile, guiding holes, grouting by a sleeve valve pipe, sealing the holes, guiding the holes again and pre-burying the sleeve valve pipe for standby; and 2) the excavation of the foundation pit and the anti-seepage and leak-blocking construction: using surface floating earth for clearing and using the encased steel plate reinforcement method for anti-leak treatment for the situations that joints of the underground continuous wall have defects definitely and risk points are positioned below the excavation surface of the foundation pit, adopting the hole-guiding cyanogen injection condensing method for blocking of leak points with slight water leakage situation, adopting the horizontal hole grouting method for blocking for the water leak points with serious water leakage situation, and carrying out filling, grouting and reinforcement through the pre-buried sleeve valve pipe after completing the blocking. The method has reasonable design, convenient construction, comprehensive consideration, good anti-leak and leak-blocking effect, fast leak-blocking speed and can solve the problems of pipe blocking, poor anti-leak and leak-blocking effect, slow construction progress and the like in the existing anti-leak and leak-blocking construction.

The invention discloses a multi-loop comprehensive control device for a coal mine fully-mechanized excavation working surface. The multi-loop comprehensive control device comprises an anti-explosion shell, and is characterized in that: the anti-explosion shell comprises an isolation switch cavity and a main control cavity; a group of isolation switches are arranged in the isolation switch cavity;each isolation switch is connected with a group of driver units; all the driver units are arranged in the main control cavity; each driver unit is connected with a protection card unit; the protection card unit is connected with a protection card power supply unit; the protection card power supply unit is connected with a programmable logic controller (PLC); and the PLC is connected with a keyboard and a liquid crystal display screen. The multi-loop comprehensive control device can simultaneously and comprehensively control different sets of power supply voltage equipment of a fully-mechanized excavator, an adhesive tape conveyor and a winch, so that the shortcomings of complicated wire connection, difficulty in moving and the like of the conventional underground fully-mechanized excavation working surface control method are overcome.

The invention discloses a non-contact connecting device for transmitting underwater electric energy and signal, comprising a socket and a plug. Unidirectional electric energy transmission from the socket to the plug can be realized by the law of electromagnetic induction; bidirectional signal transmission between the socket and the plug can be realized by the optical communication principle. Compared with the traditional electric energy and signal transmission connection device, the invention does not need direct contact between the socket and the plug, so that the socket and the plug can realize respectively independent full packaging, and inner devices are separated from ambient environment, thus greatly simplifying sealing, effectively preventing water seepage and electricity leakage accidents, and creating favourable conditions for long-term stable operation of underwater electromechanical equipment; in addition, the invention can avoid high expense caused by the fact that an underwater robot is used for plugging during underwater moist plugging of connectors.

The invention relates to a cast iron horizontal continuous casting double-water jacket type crystallizer, which comprises a double-water jacket type crystallizer steel sleeve and a high-purity graphite sleeve, wherein the high-purity graphite sleeve is embedded in the double-water jacket type crystallizer steel sleeve, the double-water jacket type crystallizer steel sleeve comprises a crystallizer steel sleeve inner sleeve and a crystallizer steel sleeve outer sleeve, the crystallizer steel sleeve outer sleeve is arranged at the exterior of the crystallizer steel sleeve outer sleeve, the crystallizer steel sleeve inner sleeve is provided with a spiral water passage with a trapezoidal cross section, a separating plate is arranged in the spiral water passage with the trapezoidal cross section, and is used for separating the spiral water passage with the trapezoidal cross section into a spiral water passage with a trapezoidal cross section I and a spiral water passage with a trapezoidal cross section II, the crystallizer steel sleeve outer sleeve is respectively welded with a water inlet pipe of a main sleeve A, a water outlet pipe of the main sleeve A, a water inlet pipe of an auxiliary sleeve A and a water outlet pipe of the auxiliary sleeve B, the water inlet pipe of the main sleeve A and the water outlet pipe of the main sleeve A are respectively communicated with the spiral water passage with the trapezoidal cross section I to form the main sleeve A, and the water inlet pipe of the auxiliary sleeve B and the water outlet pipe of the auxiliary sleeve B are respectively communicated with the spiral water passage with the trapezoidal cross section II to form the auxiliary sleeve B. The cast iron horizontal continuous casting double-water jacket type crystallizer has the advantages that the process advantages of horizontal continuous casting using separate control of the two water jackets are fully realized, the leakage of furnaces is avoided, the drawing speed is improved, and the cost is reduced.

The invention discloses a new energy automobile or charging gun large current connector waterproof structure. The structure comprises a socket and a plug; the socket comprises a terminal I, a socket insulating base body and a socket shell; the terminal I is a male terminal or a female terminal; the plug comprises a terminal II, a plug insulating base body, and a plug shell; the terminal II is the female terminal or the male terminal; the combining part of the outer wall of the terminal I in the socket and the inner hole of the socket insulating base body is provided with a sealing structure I; the combining part of the socket insulating base body and the socket shell is provided with a sealing structure II; the combining part of the outer wall of the terminal II in the plug and the inner hole of the plug insulating base body is provided with a sealing structure III; and the combining part of the plug insulating base body and the plug shell is provided with the sealing structure IV. Under the condition that the plug is not plugged in the socket, if liquid from the external is sputtered to the plugging surface of the plug or the socket, the liquid cannot permeate in the wiring (cable in soldering, compression joint or locking with copper medal) part of the plug or the socket.

A wear-resistant insulating material covering a bare overhead conductor and a preparation method and application thereof are disclosed. The insulating material includes, by weight, 20-40 parts of hydroxy poly(phenyl methyl siloxane), 30-50 parts of hydroxyl-terminated polydimethylsiloxane, 5-20 parts of hydrophobic nanometer fumed silica, 20-40 parts of hydrophobic silica fume, 1-5 parts of hydrophobic silicon carbide, 5-10 parts of hollow glass microbeads, 1-2 parts of pigment, 5-10 parts of a ketoxime removing type crosslinking agent and 1-5 parts of a catalyst. The insulating material has advantages of low density, a high solid content, high hardness, good wear resistance, and the like, does not influence carrying load of the bare conductor when the bare conductor is coated with the material, and has a wide application temperature range. The preparation method is high in efficiency and highly controllable.

The invention belongs to the technical field of new energy devices, and specifically relates to a new energy vehicle charging pile, which comprises a pile body.A first chamber is formed in the pile body, a wire winding mechanism is rotatably arranged in the first chamber, a charging cable is arranged in thewirewinding mechanism, the charging end of the charging cablepenetratesthrough the inner wall of the front end of the first chamber and is connected with a charging gun, a second chamber is arranged in the pile body, the second chamber is located below the first chamber, the bottom of the second chamber is rotatably connected with a driving mechanism, the driving end of the driving mechanism penetrates through the top surface of the second chamber and extends into the first chamber, thedriving mechanism is connected with the wire winding mechanism, a second groove is formed in the side wall of the front end of the pile body, a through hole communicating with the second chamber is formed in the inner wall of the second groove, and a magnetic sensing device is arranged in the through hole in a penetrating mode.Accordingto the new energy vehicle charging pile,when a vehicle parksina parking spot in front of the charging pile, the charging wire can be discharged and electrified, and the charging pile also has an anti-collision function.

The invention provides a charging connecting device of an electric vehicle. The device comprises a vehicle plug, a charging pile plug, a first adapter and a second adapter; the vehicle plug comprises a first AC power contact, a first medium line contact, a first protecting grounding contact, a first charging confirmation contact and a first control confirmation contact; the charging pile plug comprises a second AC power contact, a second medium line contact, a second protection grounding contact, a second charging confirmation contact and a second control configuration contact; the first adapter is connected with the vehicle plug through a first cable; the second adapter is connected with the charging pile plug through a second cable; the first adapter and the second adapter are equipped with a third contact and a fourth contact which are arranged in the same position and adapted to each other by the structure; in addition, the contacts with the same function in the vehicle plug and the charging pile plug can be correspondingly connected. With the adoption of the device, the problem that the electric vehicle produced according to the European standard and US standard cannot be charged through charging pile produced according to national standard in the prior art can be solved.

The invention relates to a safe steel ladle lining. The safe steel ladle is characterized in that the safe steel ladle lining comprises a steel ladle body, a heat-insulating layer, a permanent lining, a safe lining and a working lining; the heat-insulating layer, the permanent lining, the safe lining and the working lining are sequentially arranged on the steel ladle body from outside to inside; the safe lining is formed by staggered arrangement of building gaps of magnesium-carbon brick layers or aluminum-magnesium-carbon brisk layers in a vertical direction, and the thickness of the safe lining is 20-100mm; the working lining is built by magnesium-carbon bricks or aluminum-magnesium-carbon bricks, and the thickness of the working lining is 100-200mm. Compared with the prior art, the safe steel ladle lining has the advantages that construction period for steel-ladle building is shortened; experienced professional ladle judgers are not needed for judging steel ladles, and any person can judge the steel ladles, so that safety of the steel ladles is improved and leakage of the steel ladles is avoided; consumption on fireproof materials of the steel ladles is reduced, so that cost is saved; the safe lining can be used for a long time, use quantity of the magnesium-carbon bricks or the aluminum-magnesium-carbon bricks of the working lining is reduced, and service life of the steel ladles is prolonged.

The invention belongs to the field of preparation of smelting crucibles and particularly relates to a furnace-ramming ingredient of an atmospheric-pressure medium-frequency furnace and a preparation method of a crucible. The ingredient is prepared by mixing 96-98% (in percentage by weight) of fused magnesia and less than 1% (in percentage by weight) of boric acid, adding 2-3% (in percentage by weight) of water and fully mixing, wherein the particle size and ratio (in percentage by weight) of fused magnesia are as follows: fused magnesia of which the particle size is greater than 200 meshes and less than or equal to 1mm accounts for 20%, fused magnesia of which the particle size is equal to or greater than 3mm and less than 5mm accounts for 10%, fused magnesia of which the particle size is equal to or greater than 5mm and less than or equal to 8mm accounts for 40% and fused magnesia of which the particle size is less than or equal to 200 meshes accounts for 30%. By adding the ingredient and optimizing the process, the service life of the furnace is increased not less than 30% compared to the furnace life, the power consumption is decreased by 70-90%. The furnace leakage accident is basically eliminated.

The invention relates to the technical field of lighting, in particular to a lamp string. The lamp string comprises a plurality of light emitting assemblies and two wires parallel to each other. Each wire is composed of a conductor and an insulating layer wrapping the conductor. The insulating layer of each wire is provided with a plurality of openings. Conductor contact faces are arranged at the positions of the openings and located between each conductor and the corresponding insulating layer. The conductor contact faces at the corresponding positions of the two wires form a pair of conductor contact faces. Each light emitting assembly is connected with the corresponding conductor contact faces of the two wires in a crossing mode. The lamp string can be used as a decoration. When the lamp string is used, it is only required that the two wires are connected with the positive electrode and the negative electrode of a power source respectively, and the lamp string is convenient to use. The light emitting assemblies are welded to the conductor contact faces of the two wires, the welding difficulty is low, efficiency is high, and mass production is facilitated.

The invention belongs to the technical field of water heaters, and relates to a photovoltaic heating PTC electric water heater. The photovoltaic heating PTC electric water heater comprises a water heater shell, an inner container, PTC heating bars and a power source. The PTC heating bars are inserted in an inner container cavity. The photovoltaic heating PTC electric water heater is characterized in that a heater is arranged and comprises a shell, an air blower and a PTC heater, the shell is provided with an air inlet and an air outlet, and the air blower is arranged at the air inlet; the power source is a photovoltaic power source and comprises a photovoltaic generating plate, a photovoltaic controller and a photovoltaic storage battery; and the photovoltaic storage battery is connected with the PTC heating bars inserted in the inner container, the air blower arranged in the shell of the heater and the PTC heater. The photovoltaic heating PTC electric water heater is simple and reasonable in structure, power generating and heating are carried out through solar energy, and energy saving and environment protection are achieved; and meanwhile the heater is arranged, and when people take a bath in winter, the heater can be started, and cold catching due to bath taking is avoided. The photovoltaic heating PTC electric water heater has the beneficial effects of saving energy, protecting the environment, providing warm air, purifying air, performing sterilizing and the like, and wide market space is achieved.

The invention discloses flame-retardant rubber which is prepared from the following raw materials in percentage by weight: 0.1-0.3% of sodium stearate, 3-5% of titanium dioxide, 3-5% of zinc oxide, 3-5% of magnesium oxide, 0.1-1% of an antistatic agent, 3-15% of calcium carbonate powder, 5-15% of insulating ceramic particles, 2-5% of an accelerant, 5-10% of asbestos fiber, 1-3% of carbon black, 0.01-0.3% of a smoke suppressant and the balance of chloroprene rubber. According to the flame-retardant rubber disclosed by the invention, the impact resistance, the antistatic property, the ageing resistance and the toughness of a rubber product are improved to a great extent and the thermal decomposition temperature of the rubber product is increased while the insulating performance of rubber is enhanced. Fire hazards can be further effectively reduced while the electric insulating property is improved and electric leakage accidents are prevented, and moreover, fire spread can be effectively prevented, so that an effect of reducing damages by fire is achieved.

The invention discloses a desktop computer power supply of high-temperature automatic-powering-off. The power supply includes a power supply housing body. A power supply plug is fixedly mounted on oneend of the power supply housing body. A wiring terminal is fixedly connected with one end of the power plug. A protection tube is fixedly communicated with one end of the power supply plug. An innerwall of the protection tube is in fixed sleeve connection with an outer surface of the wiring terminal. One end of the power supply housing body is provided with air inlets. A heat dissipation fan isfixedly mounted on an inner wall of the other end of the power supply housing body. The inner wall of the other end of the power supply housing body is provided with air outlets. According to the desktop computer power supply of high-temperature automatic-powering-off, an effect of using a principle of expansion with heat and contraction with cold to disconnect the power supply is achieved; when aheat dissipating device in the power supply is damaged, alcohol absorbs heat, then expands, and pushes sliding rods, and the sliding rods drive spring pieces on a surface of a fixing plate to slide to be disconnected from electrical connection of the wiring terminal; and thus the problem that after a long period of use of the heat dissipating device in the desktop computer power supply, the fan stops rotating, and then the power supply is liable to be damaged is effectively solved.

The invention discloses vehicle-mounted main drive battery box airtightness detecting equipment. The equipment comprises a vehicle network interconnection terminal TBOX, a vehicle controller VCU, a blast pump, a drying bottle, a pressure sensor, a two-way electromagnetic valve, a main drive battery box and a relay, the vehicle network interconnection terminal TBOX is bi-directionally communicatedwith the vehicle controller VCU through a CAN communication line, and the vehicle controller VCU is unidirectionally communicated with the two-way electromagnetic valve at an I/O signal through a communication line; the pressure sensor is unidirectionally communicated with the vehicle controller VCU at an analog quantity signal through a communication line, the vehicle controller VCU controls therelay at the I/O signal through a communication line, and the relay is communicated with the blast pump through a cable; the blast pump is unidirectionally communicated with the drying bottle througha through pipeline, the pressure sensor is unidirectionally communicated with the two-way electromagnetic valve, and the two-way electromagnetic valve is bi-directionally communicated with the main drive battery box. The equipment has the advantages of being simple, reliable and low in automatic control cost, achieving vehicle-mounted automatic detection and alarm, and sending data in real time.

The invention provides a power distribution cabinet. The power distribution cabinet comprises a box body, an action bottom plate, an inductor, an intelligent circuit breaker and an intelligent currentstabilizer, and a baffle is fixed to the left side face of the box through a second series of bolt sets. An upper guide groove and a lower guide groove are respectively formed in the upper and lowersides of the rear side surface of the box body; an upper limiting column and a lower limiting column are respectively arranged in the upper guide groove and the lower guide groove; and a connecting strip is fixed to the right side face of the driving plate through a first series of bolt sets. The right portion of the flexible plate penetrates through the passing column to be connected with the rear end of the middle column, the bottom of the passing column is fixedly connected with the bottom of the box body through the fixing connecting arm, the front end of the middle column is fixedly connected with the rear end of the pull belt, a fixing column is arranged on the right side face of the box body, and the top of the pull belt is fixedly connected with the right end of the rack. Accordingto the technical scheme, the technical problems that in the prior art, the box door automatic opening function is not achieved, the capacity of rising when meeting water, intelligent power failure, intelligent current stabilization and the like are effectively solved, and application and popularization are facilitated.

The invention provides a waterproof safe socket and a waterproof safe plug capable of protecting children against electric shock. The safe socket is provided with an insulation outer shell, an insulation rotating core, a movable clamping pin, a spring and a power supply clamping lug, and the safe plug comprises an insulator and a bipolar electrode or a tripolar electrode. The insulation outer shell is movably connected with the insulation rotating core in a sleeved mode, a power supply in the socket is hidden through the rotation of the insulation rotating core when the socket and the plug are separated, electric shock accidents due to the fact that the children insert the fingers or conductors into the power supply are avoided, and the power supply is also sealed completely when the socket and the plug are connected in an inserted mode and work to avoid electric arc phenomena. The upper end protruding edge of the insulation outer shell and the upper end cover edge of the insulation rotating core are connected in an up-and-down sleeved mode, and thus liquid is prevented from being sprayed in to cause short-circuit or electric leakage accidents. The plug and all the plugs of traditional national standard bipolar plugs or tripolar plugs which are used by people in the world at present, and all the plugs of German standards, American standards, Italian standards, Britain standards, South African standards Switzerland standards and the like can be converted and used, an electric wire of the safe plug can be adjusted by 180 degrees, and the ideal effects of safety, practicality and compatibility are achieved scientifically.

The present invention discloses a concurrent heating method for low-temperature continuous casting; a molten steel heating area is equipped between a pouring box (2) and a crystallizer (4) of the continuous casting device; an automatic heating device is equipped in the heating area and the automatic heating device adopts a non-contact temperature sensor (33) to measure the molten steel temperature after concurrent heating and the heating method of coreless intermediate frequency induction to implement concurrent heating on the molten steel flowing into a heater (3) of the heating device from the pouring box (2); the molten steel heated to the preset temperature flows into the internal cavity of the crystallizer (4) through an inert gases protective cover (17). The present invention also discloses an automatic low-temperature continuous casting heating device comprising the heater (3) and an intelligent temperature control system; the heater (3) is equipped between a pouring box (2) and a crystallizer (4) of the continuous casting device and the intelligent temperature control system comprises an intelligent temperature controller (34), a non-contact temperature sensor (33) and an intermediate frequency power (35).

The invention discloses a waterproof and dampproof structure for an LED underwater lamp. The waterproof and dampproof structure comprises a waterproof lamp cover, a waterproof lampshade, a waterproofshell and a base. The waterproof lampshade is mounted on the waterproof lamp cover, and a waterproof ring is arranged between the waterproof lamp cover and the waterproof lampshade. The waterproof lamp cover and the waterproof shell are locked through a locking mechanism formed by a fastening bolt and a fastening collar, and a sealing ring is arranged between the waterproof lamp cover and the waterproof shell. A sealed containing cavity with the LED lamp mounted inside is formed between the waterproof lamp cover and the waterproof shell, super absorbent resin is arranged around the LED lamp, and the waterproof shell is connected with a wire containing pipe. The wire containing pipe is connected with the base through a support, a water-steam exchange channel with an end cap is arranged on the base, and a water amount detecting device is mounted in the base. The waterproof and dampproof structure is simple in structure, safe, reliable, easy to assemble and convenient to repair, and has high waterproof and dampproof capacity.