39results about How to "Increase the installation distance" patented technology

The invention relates to the technical field of fire-fighting equipment, in particular to a power transformer fire extinguishing system and a control method. The power transformer fire extinguishing system comprises an equipment protecting room, a fire extinguishing pipe network, multiple fire detectors, point spraying branch control pipe valves and weatherproof porous bundling nozzles; a gas cartridge set, a starting bottle set, a 3D boiling powder storage tank and a fire extinguishing controller are arranged in the equipment protecting room, and the fire extinguishing controller is provided with a multi-feature signal detector, an air speed detector and a reburning detection and alarm controller. The control method comprises the following steps of initialization, fire detection, alarm and fire extinguishment; the fire extinguishment comprises the steps of point fire extinguishing scheme generating, multi-point fire extinguishing scheme generating and full fire extinguishing scheme generating. According to the power transformer fire extinguishing system and the control method, the main pipe network is buried under a terrace, the safety is high, and the stable reliability of the fire extinguishing system is guaranteed; a point fire extinguishing scheme, a multi-point fire extinguishing scheme and a full fire extinguishing scheme are designed according to different fire types, and the fire extinguishing efficiency and the fire extinguishing effect are greatly improved.

The invention discloses an LED control method and equipment. The LED control equipment comprises a PC (Personal Computer), a master controller and a plurality of branch controllers; the plurality of branch controllers are connected in series with the master controller; the PC is connected with the master controller; and the branch controllers are used for controlling LEDs. By applying the technical scheme, the plurality of branch controllers are connected in series with the master controller, when a branch controller is additionally provided, the branch controller is needed to match with an impedor of a device arranged at the front end of the branch controller, but not needed to match with impedors of all devices, therefore, the connection number of the branch controllers is increased, and the mounting distance of the LEDs is further increased.

The invention discloses a power distribution cabinet, which comprises a cabinet body, an installation cavity and a rain top, wherein the rain top is arranged at the top of the cabinet body; the installation cavity is arranged in the cabinet body; an installation plate is arranged in the installation cavity; communication holes are arranged in the surface of the installation plate; wiring holes are arranged in the left side and the right side of the installation plate; an installation groove matched with the installation plate is arranged in the inner wall of the installation cavity; a bottom plate is arranged at the bottom of the installation cavity; air outlets are arranged in the left outer wall and the right outer wall of the cabinet body at the lower part of the bottom plate; air inlets are arranged in the outer wall of the cabinet body at the upper sides of the air outlets; each air inlet is provided with a dust hood; an exhaust fan is arranged at an internal port of each air outlet and is connected with a motor controller; and the motor controller is connected with a temperature sensor. The power distribution cabinet is simple and reasonable in structure, good in heat dissipation performance and convenient to repair; and meanwhile, the dust is also prevented from entering the power distribution cabinet.

The invention discloses a double-part support rotary micro-sprinkler. The double-part support rotary micro-sprinkler comprises a support, a rotary body and a nozzle, wherein the support is a double-part support, a positioning hole is formed in the upper end of the support, and a sleeve is arranged at the lower end of the support; the rotary body comprises a water inlet hole, a water diversion baffle, runners and a rotary shaft which are designed in sequence from bottom to top; and the runners include the first runner and the second runner, the elevation of the first runner is larger than that of the second runner, the first runner and the second runner each have an deflection angle, and the deflection angle of the first runner is smaller than that of the second runner. The double-part support rotary micro-sprinkler has the advantages that the sprinkling radius is large, sprinkling is uniform, and the effect that in a certain pressure range, support deformation caused by high pressure does not occur, and rotation of the rotary body is not affected is achieved; the micro-sprinkler is convenient and fast to mount and dismount; due to large sprinkling width, the number of sprinklers adopted per mu on average is small, and first-time investment cost of micro-irrigation projects is reduced; and sprinkling is uniform in the sprinkling width direction, so that moisture and nutrients obtained by crops are uniform, the growing vigor is uniform, and high-yield and high-quality agricultural products can be easily achieved.

The invention relates to a parallel bundle-assembled overhead insulation cable and a production process thereof. The parallel bundle-assembled overhead insulation cable comprises compression conductors, the compression conductors are formed by twisting of circular carbon fiber yarns and irregular hard aluminum wires arranged at outer walls of the circular carbon fiber yarns, outer walls of the compression conductors are provided with insulating layers, the insulating layers are connected with connecting ribs, and the upper surfaces of the connecting ribs are provided with marking lines. The production process of the parallel bundle-assembled overhead insulation cable comprises wire drawing, wire twisting, extrusion molding, and crosslinking. The cable and the production process thereof are advantageous in that the production efficiency is high, the service lifetime is long, the overall cost is low, and the promotion is facilitated.

The invention aims at providing an auxiliary frame fatigue test bending moment and torque elimination device comprising a spindle, a height adjusting device, a universal joint, a transmission shaft and a torque elimination device. The spindle is installed on the height adjusting device and can perform elevating motion along a vertical direction under the effect of the height adjusting device. The two ends of the spindle are arranged at the two sides of the height adjusting device. The front end of the spindle is provided with the universal joint, and the rear end of the spindle is provided with a workpiece connecting part. The torque elimination device is connected with the universal joint through the spindle. The other end of the torque elimination device is connected with the transmission shaft. The defects in the prior art can be overcome by the device, and the device has the characteristics of eliminating the bending moment and the torque and enhancing the service life and the test accuracy.

The invention relates to a dish washing machine. The left side and the right side of the housing (10) of the dish washing machine are fixedly provided with supports (6). The dish washing machine comprises a door (20) which is connected with the upper end of the support (6) through a hinge (8) and can overturn upward. The machine also comprises a spring (5) which is in an extended state. One end of the spring (5) is connected with the support (6), and the other end is connected with the door (20) through a stay cord (3). When the door (20) is opened, under the action of the stay cord (3), elongation of the spring (5) is reduced. Through the above arrangement, tensile force of the spring can at least partially offset gravity of the door of the dish washing machine, to save effort of a user to open the door, and in a closing process of the door, gradually increased tensile force is converted to a buffer acting force, to reduce colliding acting force when the door is closed. In particular, when the door is opened to an angle, moments of the tensile force of the spring and the gravity of the door on a pivot are equal and are opposite in directions, so the door can suspend on the opening angle.

The invention provides a time difference method ultrasonic flowmeter, and relates to an ultrasonic flowmeter. According to the time difference method ultrasonic flowmeter, the data acquisition rate of the ultrasonic flowmeter is improved; the data acquisition synchronization is improved; the measurement accuracy is improved; the time difference method ultrasonic flowmeter is provided with an ultrasonic transducer, ultrasonic receivers and a pipe; the ultrasonic transducer is used as an ultrasonic emitter; the ultrasonic receivers are arranged on both sides of the ultrasonic transducers; the ultrasonic transducer is provided with a tapered matching layer, an insulating adhesive, a piezoelectric sheet, a tail mass block, a prestressed screw and a wire; and the piezoelectric sheet, the tapered matching layer and the tail mass block are connected through the prestressed screw. By changing the installation mode of the ultrasonic flowmeter, the ultrasonic transducer with the tapered matching layer is used as the ultrasonic emitter. Downstream sampling and countercurrent sampling are synchronized. The measurement accuracy is improved. The sampling rate of the ultrasonic flowmeter can be improved.

A snake for installing a cable in a conduit, comprising a body (2, 2', 2'') and a joint (3, 3', 3'') corresponding to the shape of the inner surface of the conduit (8), said body comprising a tubular part (9) which is radially elastic and on which the joint is mounted, and a support part (13, 13', 13'') which is fixed to or integral with the tubular part, the tubular part having a guide surface (14) which is used to guide the snake inside the conduit, the diameter of the guide surface being slightly smaller than the maximum diameter of the joint such that the support part radially deforms the tubular part when the snake passes into deformed parts of the conduit.

The invention discloses a coating mechanism for computer circuit board processing. The coating mechanism comprises a computer circuit board coating body, wherein the computer circuit board coating main body comprises a circuit board coating machine, a display and a keyboard; the display and the keyboard are electrically connected with the circuit board coating machine; the computer circuit board coating main body further comprises a display folding main body, a dustproof main body, a keyboard folding main body and supporting legs; the side end of the display folding main body is fixedly mounted through the outer end of a circuit board coating machine; wherein the dustproof main body is installed in a sliding mode through the displayer folding main body, the upper end of the keyboard folding main body is fixedly installed at the outer end of the displayer folding main body, and the two pairs of supporting legs are symmetrically and fixedly installed at the lower end of the circuit boardcoating machine. According to the invention, the display can be folded conveniently, the keyboard can be folded conveniently, the space is saved, the display is dustproof when not in use, the heightof the support legs can be adjusted conveniently, and the use requirements are met better.

The invention relates to the field of hardness testers, and particularly discloses a Vickers microhardness tester infinite imaging system which sequentially comprises an amplification imaging device, an independent hardness pressure head, a converter device, a reflection device, an infinite auxiliary optical system imaging device, an observation tube device and an imaging eyepiece from bottom to top along a light path, wherein the amplification imaging device is used for amplifying an image of a to-be-tested sample, the converter device is used for conversion between the amplification imaging device and the independent hardness pressure head, the reflection device is used for changing the direction of a light path amplified by the amplification imaging device, and the infinite auxiliary optical system imaging device is used for reversing a parallel transmission light path into an imaging light path. The observation tube device is used for dividing a light path into two parts which are respectively imaged in the imaging eyepiece, so that the problems that the installation sizes of the objective lens and the eyepiece are difficult to correct during assembly and the imaging quality and effect of the system are influenced due to the fact that the mechanical tube length size of a limited imaging system of a traditional table type microhardness tester is fixed and cannot be changed are solved.

The invention discloses an output shaft used for installing a hydraulic machine independently. The output shaft comprises a first bearing installation boss, an external spline and a second bearing installation boss. A fourth sealing groove is formed in the outer surface of the first bearing installation boss. An internal spline is arranged inside the first bearing installation boss. A bearing space ring is arranged at the lower side of the first bearing installation boss. The bearing space ring is provided with a third sealing groove. An extension shaft is arranged below the bearing space ring. The external spline is arranged at the lower side of the extension shaft. The second bearing installation boss is arranged at the lower side of the external spline. A second sealing groove and a first sealing groove are formed in the outer surface of the second bearing installation boss. The output shaft used for installing the hydraulic machine independently has the beneficial effects that the output shaft can be installed on an automobile transmission shaft through the internal spline, the installation distance between the hydraulic machine and a drive axle is prolonged, interference is avoided, applicability of the hydraulic machine is improved, and therefore the braking effect of an automobile is improved, and the life and property safety of a driver and passengers can be guaranteed.

The invention discloses an all-dielectric optical cable. The all-dielectric optical cable comprises a sheath, a water lubricating layer made of resin is arranged on the outer surface of the sheath, and the resin adopted by the water lubricating layer is different from that adopted by the sheath; the water lubricating layer has water solubility so as to form an aqueous solution around the all-dielectric optical cable after being dissolved in water when the all-dielectric optical cable is laid in water, and the aqueous solution has preset kinematic viscosity and preset density, so that the all-dielectric optical cable is suspended in the aqueous solution and the propulsive force borne by the all-dielectric optical cable is improved. The water-soluble resin is adopted in the water lubricating layer arranged on the outer side of the sheath of the all-dielectric optical cable, in the water laying process, the water lubricating layer is directionally released between the sheath and the inner wall of the pipeline, after the water lubricating layer is completely dissolved, and the water lubricating layer is dissolved and reacts with high-speed water flow in the pipeline to form a water solution. The friction force between the all-dielectric optical cable and the inner wall of the pipeline is reduced, and the propulsion power brought by the laying medium is improved.

The invention relates to a flameproof LED roadway lamp for mines, which comprises a lamp shell (2), a copper cushion plate (3) and a transparent part (5) installed on the front face of the lamp shell and a pressing device pressing plate (4). The flameproof LED roadway lamp for mines comprises an electrical appliance assembly LED driving plate (15) and an insulating screw (10) installed in a wiring cavity. The flameproof LED roadway lamp for mines comprises a rear cover (11) and a rear cover (13) installed at the back face of the lamp shell, and the rear cover (13) and the rear cover (11) are connected in parallel to form an independent cavity. The flameproof LED roadway lamp for mines comprises a light-emitting assembly LED light source (6), an LD aluminum base plate (8) and an LED lens (7). The light emitting angle of the lens is 95*130 DEG, 4 rows of 16 flameproof LED roadway lamps for mines are arranged in parallel, light distribution is rectangular aperture, the installation distance of adjacent lamps is extended, the use quantity of the lamps is reduced, the lens concentrates all discrete light in the space on a working face, and the illuminance of the working face is increased. The LED lamp bead is arranged in the center of the bottom face of each lens, the effective light distribution of 120-180 DEG discrete light emitted by LED is ensured, the utilization rate of light is increased, and the flameproof LED roadway lamp for mines also has the effect of preventing glare.

The invention relates to a coil framework and binding post connecting structure and a mounting method thereof. The connecting structure comprises a coil framework and a binding post, wherein the coilframework comprises a cylindrical winding part for winding wires; a first platform part is arranged at the upper end of the winding part; a second platform part is arranged at the lower end of the winding part; the binding post is connected onto the first platform part; a mounting part at which a vertical section of the binding post can be inserted is raised on the first platform part; a flange israised on the first platform part; the distance from the outer side of the flange to the edge of the first platform part is greater than zero; and a containing groove capable of supporting a horizontal section of the binding post is formed between the outer side of the flange and the first platform part. According to the connecting structure disclosed by the invention, the mounting part and the containing groove are arranged on the coil framework, so that the vertical section of the binding post is inserted into the mounting part, the horizontal section of the binding post is supported in thecontaining groove, the binding post is prevented from sliding upwards or downwards, and the condition that the binding post and the coil are contacted to damage a protective layer of the wire so as to cause short circuit is avoided.

The invention discloses a mounting frame for installing IGBTs in series and a method for installing IGBTs in series, wherein the mounting frame for installing IGBTs in series is a hollow regular polygon, and each side is provided with two oblong circles along the vertical direction The hole is used as the IGBT installation groove; the IGBT is fixed on the heat sink, and the heat sink is connected to the fixed splint through the oblong hole, and thus installed on the mounting frame; the IGBTs are connected in series by connecting wires; the installation height of the IGBT on each side extends clockwise Or gradually decrease counterclockwise, showing a spiral distribution. The mounting frame provided by the present invention can flexibly adjust the installation height of the IGBT to the ground. Through the flexible configuration of the installation height of the IGBT to the ground, the flexible configuration of the stray capacitance of the series IGBT to the ground is realized, and the voltage equalization characteristics of the series IGBT are optimized. And realize the compact installation of the equipment.

The invention provides a chemical dredging system for a municipal drainage pipe network, and relates to the technical field of chemical dredging systems for drainage pipe networks. The chemical dredging system for the municipal drainage pipe network comprises a pipeline, a detection device and a sludge cleaning device, the detection device is connected with the pipeline, the detection device comprises a sludge height measuring assembly and a signal processor, the sludge height measuring assembly is electrically connected with the signal processor, and the signal processor is electrically connected with the sludge cleaning device. The chemical dredging system for the municipal drainage pipe network is simple in structure, the deposition position of a pipeline can be determined in real time, and it is guaranteed that the pipeline is dredged in time; dangers during manual dredging are prevented, and physical harm caused by oxygen deficit suffocation or harmful gas when workers enter the pipeline is avoided; meanwhile, the viscosity of the sludge is reduced by using a chemical agent, and the sludge is washed away to a sewage treatment plant by using water pressure in the pipeline, so that the cost is reduced, and the sewage cleaning efficiency of the chemical dredging system for the municipal drainage pipe network is improved.

The invention discloses a suspension bridge main cable anti-corrosion device and method. The device includes a gas incoming clamp, gas discharging clamps, a dehumidification and nitrogen generation device and an automatic control system, wherein the gas incoming clamp and the gas discharging clamps sleeve a sealed main cable; temperature and humidity sensors are installed in the gas incoming clamp and the gas discharging clamps; the temperature and humidity sensors are connected with the automatic control system; the gas inlet of the gas incoming clamp is provided with a normally open type solenoid valve; the gas outlets of the gas discharging clamps are provided with normally closed solenoid valves; the normally open type solenoid valve and the normally closed solenoid valves are connected with the automatic control system; the dehumidification and nitrogen generation device includes a dehumidification unit and a nitrogen generation unit; the gas outlets of the dehumidification unit and the nitrogen generation unit are connected in parallel with a three-way control valve and then are connected with the gas inlet of the gas incoming clamp; and the dehumidification unit and the nitrogen generation unit are connected with the automatic control system. The suspension bridge main cable anti-corrosion device can monitor humidity and oxygen content of the internal space of the main cable and automatically select the operation mode of the dehumidification and nitrogen generation device so as to make the purity of nitrogen filling the main cable higher than 99%, and therefore, the service life of a bridge can be greatly prolonged.

A snake for installing a cable in a conduit, comprising a body (2, 2', 2'') and a joint (3, 3', 3'') corresponding to the shape of the inner surface of the conduit (8), said body comprising a tubular part (9) which is radially elastic and on which the joint is mounted, and a support part (13, 13', 13'') which is fixed to or integral with the tubular part, the tubular part having a guide surface (14) which is used to guide the snake inside the conduit, the diameter of the guide surface being slightly smaller than the maximum diameter of the joint such that the support part radially deforms the tubular part when the snake passes into deformed parts of the conduit.

The invention relates to a structure of cabinet, specially a kind of block-type network cabinet. Said block-type network cabinet comprises two covering boards (1) and two or four equipment mounting bars (2) which are between the two covering boards (1), said equipment mounting bars (2) are fixed to the covering board (1) by bolt (3) directly; the equipment mounting bars (2) also possess function of cabinet; said equipment mounting bars (2) can be mounted on different positions of holes (1m) on mounting surface (1e, 1f) based on demand. The block-type network cabinet possesses advantages that structure is easy, mounting is convenient and volume is little.

The invention relates to a flameproof LED roadway lamp for mines, which comprises a lamp shell (2), a copper cushion plate (3) and a transparent part (5) installed on the front face of the lamp shell and a pressing device pressing plate (4). The flameproof LED roadway lamp for mines comprises an electrical appliance assembly LED driving plate (15) and an insulating screw (10) installed in a wiring cavity. The flameproof LED roadway lamp for mines comprises a rear cover (11) and a rear cover (13) installed at the back face of the lamp shell, and the rear cover (13) and the rear cover (11) are connected in parallel to form an independent cavity. The flameproof LED roadway lamp for mines comprises a light-emitting assembly LED light source (6), an LD aluminum base plate (8) and an LED lens (7). The light emitting angle of the lens is 95*130 DEG, 4 rows of 16 flameproof LED roadway lamps for mines are arranged in parallel, light distribution is rectangular aperture, the installation distance of adjacent lamps is extended, the use quantity of the lamps is reduced, the lens concentrates all discrete light in the space on a working face, and the illuminance of the working face is increased. The LED lamp bead is arranged in the center of the bottom face of each lens, the effective light distribution of 120-180 DEG discrete light emitted by LED is ensured, the utilization rate of light is increased, and the flameproof LED roadway lamp for mines also has the effect of preventing glare.

A direct-current water fetching motor for an air conditioner comprises an upper end cover and a lower end cover which are vertically arranged in a spaced mode; a stator assembly is arranged in the upper end cover; a rotor assembly is arranged in the lower end cover; the rotor assembly is arranged outside the stator assembly in a sleeving mode; a rotating shaft is arranged at the axis of the lower end cover; the rotating shaft upwards penetrates through the upper end cover and extends upwards; a circuit board is further arranged in the upper end cover above the stator assembly; the circuit board is electrically connected with the stator assembly; a first extending part protruding upwards is arranged on the upper end face of the upper end cover; a second extending part extending downwards is arranged on the lower end face of the upper end cover; the second extending part and the first extending part are coaxially arranged with the rotating shaft; shaft holes penetrating up and down are formed in the second extending part and the first extending part; bearings are arranged in the shaft holes; the rotating shaft is inserted in inner rings of the bearings in a penetrating mode; and the stator assembly is fixedly arranged on the outer wall of the second extending part in a sleeving mode.

An air-conditioning host with oil separation function, an air-conditioning system, and an oil separation method, comprising a compressor, an ejector connected to the compressor, an oil separator connected to the ejector, and the oil separator The connected condenser is characterized in that a precooler is provided between the ejector and the air outlet of the compressor, and a subcooler is provided between the oil separator and the air inlet of the compressor. The device also includes the main engine of the fluorine pump and the inner unit of the air conditioner. The pre-cooler is set between the compressor and the centrifugal oil separator to supplement the first stage of ordinary oil for rough treatment, and the centrifugal oil separator is then subjected to fine treatment to improve oil separation. Efficiency solves the problem of difficult oil throwing, and lengthens the installation distance of indoor and outdoor units.

The invention aims at providing an auxiliary frame fatigue test bending moment and torque elimination device comprising a spindle, a height adjusting device, a universal joint, a transmission shaft and a torque elimination device. The spindle is installed on the height adjusting device and can perform elevating motion along a vertical direction under the effect of the height adjusting device. The two ends of the spindle are arranged at the two sides of the height adjusting device. The front end of the spindle is provided with the universal joint, and the rear end of the spindle is provided with a workpiece connecting part. The torque elimination device is connected with the universal joint through the spindle. The other end of the torque elimination device is connected with the transmission shaft. The defects in the prior art can be overcome by the device, and the device has the characteristics of eliminating the bending moment and the torque and enhancing the service life and the test accuracy.