53results about How to "Easy to install and modify" patented technology

The present invention relates to a multi-feature fusion-based non-intrusive type household load real-time identification method and device. The method includes the following steps that: voltage and current data at the entrance of a monitored environment are acquired in real time, basic electrical parameters are calculated; an effective load switching event is monitored according to the basic electrical parameters obtained in the first step, voltage and current sampling data acquired before and after the switching event are cached; sequence steady state and transient state features before and after the switching event are extracted according to the cached information in the previous step, the feature vector of a current event is generated; samples in a load feature library are filtered according to obtained event feature vector information, so that a candidate load sample subset is obtained; the matching degree of each of candidate load samples and the feature vector of the current event is calculated sequentially; and an optimal result is selected and is compared with a preset matching degree threshold value, and a load identification result is outputted. With the multi-feature fusion-based non-intrusive type household load real-time identification method and device of the invention adopted, real-time performance and low cost are fully considered with the accuracy of load identification ensured; and a solid foundation can be laid for follow-up practical promotion.

The invention discloses an apparatus for large-scale oil-immersed transformer no-load and on-load comprehensive tests and a method. The apparatus is composed of a test power source part and a measurement system. The test power source part includes an induction regulator, an intermediate transformer, an oil-immersed intensive compensation capacitor bank and a test control system which are successively connected via a circuit. The measurement system includes a precision measurement current transformer, a voltage transformer and a power analyzer. The apparatus can conduct on-site no-load and on-load loss measurement tests on 110-kV and 220-kV voltage class transformers, and can complete measurements of no-load current, no-load loss, no-load harmonic waves, short circuit impedance and load loss of transformers, and can automatically calculate the measurement test results of no-load and load loss.

The invention relates to a noninvasive household load characteristic automatic extraction method and device. The method comprises the following steps that voltage and current are sampled at the electrical entrance of the monitored user household according to the set frequency and precision; a user household load switching operation event is monitored; the voltage and current sampling data before and after the effective switching event are intercepted; the load steady state and transient state characteristics are analyzed; and the load characteristic data are transmitted to the user side to perform information marking according to the specified format. Invasion of the user household is not required so that installation and reconstruction are facilitated. The load characteristic information is automatically extracted so that the effect efficiency can be enhanced and the error caused by manual operation can be avoided.

The invention relates to a vibration targeting control device for a multi-span rotor shaft of a rotary machine, and belongs to the technical field of vibration control. By the adoption of the device, the vibration parameter change of the shaft is monitored in real time, the reason of the fault vibration is analyzed, a proper position is determined, proper damping force is applied at the proper time, and thus the vibration targeting control of the shaft is realized. The device comprises a real-time on-line signal monitoring and analyzing system and an execution system, wherein the real-time on-line signal monitoring and analyzing system comprises an eddy current displacement sensor, a photoelectric sensor, a signal conditioning module, a data collecting card, an analog output module and a computer; the execution system comprises a magnetorheological damper and an adjustable power supply. The device mainly solves the problems that the vibration is greater when the shaft is started and stopped to pass through each critical rotation speed, and the severe vibration is generated by the rubbing during the operation, by the sudden imbalance and the like.

A measuring-distance self-adaptive (within a certain scope) detecting sensor for line breaking of a spinning machine comprises a steel wire ring, a steel collar, a detection probe on the outer side of the steel ring, and a signal processing circuit which is self-adapted to distance changes of the sensor, wherein the steel wire ring is rotated on the steel collar at a high speed in work; the detecting sensor for the line breaking is fixed around the steel ring; the device comprises an ultra-thin sensor coil (with a thickness of less than 0.3 mm), a detection circuit which can sense minor changes of a magnetic field and the signal processing circuit which is self-adapted to the distance changes of the sensor; and cyclic motions of the steel wire ring can be detected. The device has the advantages of a large distance detection scope, high sensitivity, strong disturbance resistance, a small volume, convenient installation, and avoidance of influences on layout of an original working position.

The invention provides a tray-type winding machine and a winding production method. The tray-type winding machine comprises a winding machine single spindle and a bobbin yarn processing device, wherein the winding machine single spindle comprises a tube changing device, a negative pressure box, a compressed air blowing nozzle and an air supply system; and the compressed air blowing nozzle is arranged below a single spindle unwinding station of the tube changing device, and is connected to the air supply system through an air supply pipeline. The tray-type winding machine is characterized in that a negative pressure suction head is arranged below the single spindle unwinding station; an air inlet of the negative pressure suction head is close to an air outlet of the compressed air blowing nozzle; the air suction direction of the air inlet of the negative pressure suction head is opposite to the air blowing direction of the air outlet of the compressed air blowing nozzle; and an air outlet of the negative pressure suction head is connected to the negative pressure box. When a small suction nozzle fails to grasp the head of the bobbin yarn to cause the falling of the head of the bobbin yarn, the head of the bobbin yarn can automatically enter a center hole of the bobbin yarn for secondary threading, or returns to the bobbin yarn processing device for secondary threading, thus, thewasting caused by hard waste winding is avoided, and the maintenance workload is reduced. The tray-type winding machine has a simple structure and low cost and is convenient to install and transform.The single spindle bobbin yarn threading method is simple, is reliable for threading, and has high efficiency.

The invention discloses a screw type single-machine three-stage compression heat pump heating system and a control method. The system is characterized by comprising a single-machine three-stage screwtype compressor, and a refrigerating fluid inlet, a refrigerant outlet, a first air supplementing port, a second air supplement port and an oil return port are formed in the single-machine three-stagescrew rod type compressor. The refrigerant inlet is connected with a gas-liquid separator, and the refrigerant outlet is connected with an oil separator; the first air supplementing port is connectedwith a second economizer, and the second air supplementing port is connected with a first economizer in a cast-in mode; and an oil outlet of the oil separator is connected with an oil cooler, then the oil outlet of the oil separator is sequentially connected with an oil filter, the electromagnetic valve and an oil flow switch, finally the oil outlet of the oil separator is connected with an oil return port of a single-machine three-stage screw type compressor. The problems that an existing air source heat pump exceeds a limit value due to the compression ratio, the water outlet temperature islow, the application environment range is narrow are solved, the technical scheme can be applied to all heating areas in China, a traditional coal-fired boiler can be directly replaced, the installation and modification are convenient, the economic and rapid effects are achieved, the energy is saved, the environment is protected, and the technical scheme is a good heating technical scheme.

The invention discloses a field load testing device for a power transformer. The field load testing device for the power transformer is used for testing the tested transformer and comprises a power supply, a high-voltage switch cabinet, an induction voltage regulator, an intermediate transformer, a compensating capacitor bank, a mutual inductor precision measurement unit and complete testing control system equipment, wherein one side of the high-voltage switch cabinet is connected with the power supply, and the other side of the high-voltage switch cabinet is connected with the induction voltage regulator; the induction voltage regulator, the intermediate transformer, the compensating capacitor bank and the mutual inductor precision measurement unit are sequentially connected through a line. The field load testing device for the power transformer has the functions of computing and controlling an input voltage assembly and a capacity assembly of the compensating capacitor bank, and the requirement on the capacity of a field test power supply is remarkably reduced.

An electric built-in lock for rifle trigger consists of a lock seat installed in rear of its receiver, batteries, a controlling circuit, and an electric actuator with a pushing screw rod and a locking hook. The electric lock makes rifle controlled effectively and safely, can be installed invisibly, unlocked quickly, and used for various conditions with good impact-resistance.

The invention discloses a refrigeration system for cooling the outdoor intelligent box of an intelligent transformer station. The refrigeration system comprises an air compressor device, an air storage device, a purification separation device, an air cooling device and a refrigeration control device. The refrigeration system completely changes the history that the outdoor intelligent box of the intelligent transformer station has no reliable cooling facilities, effective cools the outdoor intelligent box, eliminates potential safety hazard, and ensures the normal operation of the system. The introduction of compressed air enables the intelligent box to have positive pressure, prevents external humid air or dust from entering, and ensures dry and clean air in the intelligent box. The refrigeration system uses a vortex tube for cooling, does not use electricity or any chemical substances, has no additional cooling device, and is highly efficient in energy use, economical and practical, and more suitable for a case where a number of the intelligent transformer station outdoor intelligent boxes are provided. A high-power air compressor is used for concentrated air supply and high-pressure air pipelines are laid along a cable trench to the intelligent box via various air supply branches. The refrigeration system is innovative in idea, simple and practical in structure, easy to operate and maintain, achieves automatic control, and is stable and reliable in performance and suitable for promotion.

Disclosed is a sectioned combination-type wind-deflection-preventing composite insulating inhaul cable including high-voltage-side hardware fittings, an upper rod body, a lower rod body and a middle pole. The upper end of the upper rod body and the lower end of the lower rod body are each connected with a high-voltage-side hardware fitting. The middle pole is connected between the upper rod body and the lower rod body. Each of the upper rod body and the lower rod body includes a rod core and an umbrella skirt at the outer side of the rod core. The rod cores are epoxy-resin glass-fiber-reinforced-plastic pulling rods. The umbrella skirts are silicone-rubber composite umbrella skirts. The cable is capable of preventing effectively deflection of wires, relative to a pole tower under the action of strong wind and preventing wind-deflection trip of lines so that safe operation level of power transmission lines is improved.

A windage yaw preventing rigid insulating inhaul cable of a high-voltage power transmission line comprises a bar body. The two ends of the bar body are connected with hardware fittings respectively. The bar body comprises a bar core arranged inside and an umbrella skirt located outside the bar core, wherein the umbrella skirt is made of silicone rubber composite materials, and the bar core is a pull bar made of epoxy resin glass fibers. The windage yaw preventing rigid insulating inhaul cable of the high-voltage power transmission line can effectively prevent a wire from deflecting from a pole and tower under the action of heavy wind, avoid trip caused by windage yaw of the line and improve the safe operation level of the power transmission line.

The invention relates to a counterweight post-positioned elevator without a machine room, which comprises a well channel, a cage, a diversion sheave, a tractor and a counterweight diversion sheave, wherein the cage is arranged in the well channel; two spandrel girders are arranged in the well channel; a counterweight rope head plate is arranged on one side of one of the spandrel girders; two guiding wheels are arranged on the other spandrel girder; an axle bottom wheel is arranged at the bottom of the cage; one end of a steel wire rope is fixedly connected with the counterweight rope head plate; the steel wire rope downward passes by the axle bottom wheel, then upward passes by the two guiding wheels, downward extends, and then is matched with the diversion sheave, the tractor and the counterweight diversion sheave, so as to fix the tail end of the steel wire rope on the spandrel girders; and a counterweight block is arranged on the steel wire rope. The counterweight post-positioned elevator without the machine room is suitable for transforming the elevator with the machine room into the elevator without the machine room.

The invention belongs to the technical field of building construction and particularly relates to a branch pipe type under-construction deep pit building anti-ponding system. The system comprises pipeburying pits which are disposed around the edge of a building deep pit; water collecting pipes are buried in the pipe burying pits; a water guiding pipe is connected to the water collecting pipe on at least one side, and the other ends of the water guiding pipes extend into a deep well pipe; a deep well pump is disposed in the deep well pipe; a water outlet of the deep well pump is connected witha draining pipe; the other end of the draining pipe extends into a water storing pool; water seepage pipes are connected to the pipe bodies of the water collecting pipes; water seepage holes which are distributed at intervals in the pipe length direction of the water seepage pipes are formed in the water seepage pipes; and water are collected in the water collecting pipes through the water seepage pipes, flow into the deep well pipe through the water guiding pipes and are pumped into the water storing pool under the action of the deep well pump. By means of the anti-ponding system, the effectthat no water is seeped into the portion above the bottom plane of a building foundation so that the dry state can be kept is guaranteed, the defect that in the prior art, ponding occurs into an under-construction building without an anti-ponding system is overcome, and the purpose that ponding water is rapidly and effectively pumped out in time is achieved.

The invention provides a method for improving insulation recovery performance of a spark gap for series compensation. The method comprises the following steps: step 1, mounting an instantaneous ventilating device on a series compensation device; and step 2, acquiring alternating current of the spark gap of the series compensation device by using the instantaneous ventilating device, supplying air to the spark gap if the alternating current is acquired, and entering a standby state if the alternating current is not acquired. Compared with the prior art, the method for improving the insulation recovery performance of the spark gap for series compensation does not change a body structure of an existing spark gap for a series compensation device, is convenient to mount and modify and good in feasibility; and safe and stable running of the existing spark gap for the series compensation device is not affected, and the device is simple and convenient in design and high in reliability.

The invention relates to a rapid cleaning and maintaining mechanism for a blanket cylinder of an offset press, the rapid cleaning and maintaining mechanism is used for being installed on an offset press to clean and maintain the blanket cylinder. The rapid cleaning and maintaining mechanism comprises a rotating bracket with a herringbone cross section, the bracket has a rotating shaft, a washing device mounting plate is arranged around the rotating shaft on the bracket, a cleaning agent washing device mounting plate and a reducing agent smearing device mounting plate, the washing device mounting plate, the cleaning agent washing device mounting plate and the reducing agent smearing device mounting plate are arranged on the support around the rotating shaft, the washing device comprises a first spray head set and a first suction head roller, and the cleaning agent washing device comprises a second spray head set and a second suction head roller, each of the first spray head set and each of the second spray head set all comprises a plurality of nozzles which are uniformly arranged along the axial direction of the bracket; the rapid cleaning and maintaining mechanism for the offset press blanket cylinder is good in cleaning effect, small in damage to a blanket, high in cleaning efficiency, compact in structure, small in size, convenient to transform the offset press, capable of conducting water washing and organic solvent washing respectively, capable of automatically smearing a blanket reducing agent and good in application prospect.

The invention relates to a catalyst regeneration system suitable for hydrogenation reaction for preparing ethylene glycol from synthesis gas. The catalyst regeneration system comprises a carbonylation unit and a hydrogenation unit, wherein the hydrogenation unit comprises a hydrogenation recycle compressor, a hydrogenation heater, a hydrogenation reactor, a hydrogenation cooler and a hydrogenation separator which are sequentially connected through pipelines to form a closed-loop process system; the catalyst regeneration system also comprises a regeneration tank; inlets of the regeneration tank are respectively connected with the dimethyl oxalate discharging end of the carbonylation unit through a first valve and connected with the methanol discharging end of the carbonylation unit through a second valve; an outlet of the regeneration tank is connected with an inlet of the hydrogenation heater through a pressurizing pump. The catalyst regeneration system has the advantages that the great change on the existing process production line is not needed; the installation and the modification are convenient; the activity of hydrogenation reaction catalysts can be effectively improved; the service life of the catalysts is prolonged; the cost for frequently replacing the catalysts after the catalyst deactivation is reduced; the production efficiency is improved.

The invention discloses a device for measuring the axle distance of a motor vehicle based on a laser range finder and infrared photoelectricity. The device comprises a mounting frame rod, a protectiveshell and a base plate. The mounting frame rod is L-shaped; the protective shell is fixedly welded at the top of the mounting frame rod; the base plate is fixedly welded at the bottom of the mountingframe rod; and a bottom fixing mechanism is arranged under the base plate. The beneficial effects are that: a laser distance measuring sensor and the like are arranged in the detector shell, and elements of the detector shell can be matched with an external red light photoelectric switch for detection, so that all-automatic measurement can be carried out, the detection data is not influenced by artificial subjective factors, and the detection result is objective; a dynamic measurement mode is adopted in the detection process, parking is not needed, and the detection speed is high; and the laser distance measuring sensor is placed in front of a detection lane, the requirement is consistent with that of a popular motor vehicle overall dimension automatic measuring instrument on the currentmarket, one sensor can be shared, installation and transformation are convenient, and cost is low.

The invention provides equipment for guiding parking. The equipment comprises an upper layer car-carrying board, and a ground layer car-carrying board or a ground parking space without the ground layer car-carrying board. The upper layer car-carrying board is installed on an upper layer parking space of three-dimensional parking equipment, and the ground layer car-carrying board is installed on aground parking space of the three-dimensional parking equipment. The equipment further comprises a plurality of guiding columns, and the multiple guiding columns are installed on the on the positions,without affecting car traffic and opening and closing of car doors, of the edges of the upper layer car-carrying board, and the ground layer car-carrying board or the ground parking space edge without the ground layer car-carrying board. The equipment has the beneficial effects that the parking experience feeling of drivers is improved, the parking and car-picking speed is improved, the structureis simple and reasonable, the cost is low, the applicability is wide, the safe reliability is high, installation and transformation are convenient, mass popularization is achieved, the equipment is widely used for newly built garages and transforming and improving stock garages, so that unused built-up stock garages are avoided, and the problem of difficult social parking is greatly solved.

The invention provides a multi-stage rotational flow particle suspended matter discharging device and a process thereof, and relates to the technical field of water supply and drainage and environmental protection application, according to the technical scheme, the multi-stage rotational flow particle suspended matter discharging device comprises a plurality of S-shaped rotational flow sedimentation channels which are continuously arranged, each S-shaped rotational flow sedimentation channel is provided with two baffling points which are respectively an upstream baffling point and a downstream baffling point, and the upstream baffling point and the downstream baffling point are communicated with each other. A rotational flow slag collecting tank is arranged at the baffling point, a dense porous isolation plate is arranged at the communicating part of the baffling point and the rotational flow slag collecting tank, and an automatic slag discharging device is arranged in the rotational flow slag collecting tank. The content of suspended particles in the wastewater drainage process can be reduced, and the effects of automatically collecting the suspended particles in water and effectively improving the water quality are achieved.