65results about How to "Improve field applicability" patented technology

The invention discloses a high-voltage single-core cable protective covering grounding online monitoring device and a control method. The high-voltage single-core cable protective covering grounding online monitoring device comprises an A phase current transformer, a B phase current transformer, a C phase current transformer, an A phase temperature sensor, a B phase temperature sensor, a C phase temperature sensor, a data collecting controller, a GPRS data transmission module and a monitoring device body. The high-voltage single-core cable protective covering grounding online monitoring device and the control method have the following advantages of being safe and reliable, strong in site adaptability and convenient and fast to use, and more specifically, diagnosis of grounding system faults is realized through the comparison of a grounding current monitoring value and a computed value, theoretical foundation and reference data for high-voltage cable operation monitoring are provided, so that cable accident risk is reduced, the safety and the reliability of city power grid operation are improved, and the probability that the cable grounding device is damaged is lowered to the minimum; the device is applicable to different types of grounding boxes with different grounding modes and mounting positions, has universal applicability, and is convenient to operate and simple and convenient to install; the cost of a cable terminal tower grounding system is greatly lowered, a detecting period is shortened, and manpower and material resources are saved.

Provided are a high-voltage single-core cable sheath grounding current on-line monitoring device and a control method. The high-voltage single-core cable sheath grounding current on-line monitoring device comprises an A-phase current transformer, a B-phase current transformer, a C-phase current transformer, a current data acquirer, a general packet radio service (GPRS) data transmission module and a monitoring device, wherein the A-phase current transformer, the B-phase current transformer and the C-phase current transformer are installed a sheath grounding layer ground wires of an A-phase single-core cable, a B-phase single-core cable and a C-phase single-core cable. Three input ends of the current data acquirer are connected with the A-phase current transformer, the B-phase current transformer and the C-phase current transformer respectively, and the output end of the current data acquirer is connected with the GPRS data transmission module. The GPRS data transmission module is connected with the monitoring device in a wireless mode. The high-voltage single-core cable sheath grounding current on-line monitoring device and the control method have the advantages of being safe, reliable, strong in site applicability, convenient and quick.

The invention discloses a real-time measurement method and device for geometric parameters of an overhead line system based on a single monitoring camera, and relates to the technical field of overhead line system measurement. The method comprises an image input step, a pantograph positioning step, a pantograph slider contour extraction step, a contact line extraction step, an intersection point calculation step and a lead height and pull-out value calculation step. The method for measuring the geometric parameters of the overhead line system can be suitable for application scenes under different illumination conditions and different background conditions, the wire, the carrier cable and the dropper can be well distinguished, the requirements for the frame rate and pixels of a camera are reduced, and the geometric parameters of the overhead line system are accurately measured.

The invention relates to a combined PDC-thrust ball bearing long-life transmission shaft assembly. The combined PDC-thrust ball bearing long-life transmission shaft assembly comprises a transmission shaft, a lower TC movable sleeve, a lower TC static sleeve, a thrust ball bearing group, a PDC bearing group, an upper TC movable sleeve, an upper TC static sleeve and a transmission shaft shell, wherein the lower TC movable sleeve sleeves part of the shaft head of the transmission shaft; the lower part of the lower TC movable sleeve is connected with the transmission shaft; the lower TC static sleeve is mounted on the outer circumference of the lower TC movable cover in a matched manner; the lower TC static sleeve is connected with the lower end of the transmission shaft shell arranged at the outer circumference of the lower TC static sleeve; an anti-falling half ring, which is coaxial with the lower TC movable sleeve, is arranged at the upper end of the lower TC movable sleeve; the thrust ball bearing group and the PDC bearing group are sequentially mounted on the transmission shaft from top to bottom in a matched manner; the upper TC movable sleeve sleeves the upper part of the transmission shaft; the upper part of the upper TC movable sleeve is connected with that of the transmission shaft; the upper TC static sleeve is mounted on the outer circumference of the upper TC movable sleeve in a matched manner; a universal water-saving cap is also fixed at the upper end of the transmission shaft. The combined PDC-thrust ball bearing long-life transmission shaft assembly has the advantage that the overall service life of a screw drill can be effectively prolonged.

The invention discloses an unmanned-aerial-vehicle airborne tree-barrier clipping device, and belongs to the field of tree clipping. The unmanned-aerial-vehicle airborne tree-barrier clipping device comprises a multi-rotary-wing unmanned aerial vehicle, a power system, a control system, an insulation supporting rod, a transmission shaft, a reversing transmission device, an unmanned-aerial-vehicleconnecting frame and a cutter bit; the power system is fixedly arranged at one end of the insulation supporting rod, the reversing transmission device is fixedly arranged at the other end of the insulation supporting rod, the multi-rotary-wing unmanned aerial vehicle is fixed to the end, close to the power system, of the insulation supporting rod through the unmanned-aerial-vehicle connecting frame, a multi-rotary-wing unmanned aerial vehicle support is arranged on the multi-rotary-wing unmanned aerial vehicle, the transmission shaft penetrates through the insulation supporting rod, one end ofthe transmission shaft is connected with the power system, the other end of the transmission shaft is connected with the reversing transmission device, the cutter bit is connected below the reversingtransmission device, the control system is electrically connected with the power system, and the power system is also sued for driving the multi-rotary-wing unmanned aerial vehicle. The multi-rotary-wing unmanned aerial vehicle carries a custom electric saw to reach a high-altitude tree-barrier position, the power system drives the cutter bit to rapidly remove tree barriers or clip ultrahigh trees.

The invention relates to the technical field of cable fault monitoring, in particular to a cable joint monitoring system based on a multi-parameter sensing explosion-proof box. An acquisition module is arranged in the explosion-proof box and is connected with a processing module through a transmission module, and the acquisition module comprises a temperature sensor and a pressure sensor, which are respectively used for acquiring the surface temperature of the cable joint and the pressure in the explosion-proof box; the communication data line is connected with the acquisition modules and the converter, and the wireless transmitter and the wireless receiver are respectively connected with the converter and the upper computer. The explosion-proof box is arranged at a cable joint section to ensure the safety of a cable joint, and the electronic tag and the sensor arranged on the explosion-proof box are matched to monitor the temperature, the pressure and the physical position characteristic quantity of the cable intermediate joint, so the middle box body and the end box body of the fault monitoring explosion-proof box for sensing the multi-parameter state of the joint are connected through the flexible part; therefore, the cable bending device can meet the requirement for the bending environment of on-site cables, and is easy to mount and dismount, convenient to operate and high in on-site applicability.

The invention discloses an ash conveying system of a coal-fired power plant. The system comprises a plurality of ash buckets, a bin pump feeding valve, a first ash discharging connecting pipe which isconnected to the bin pump feeding valve, and a bin pump ash storing tank, wherein a compressed air connector is arranged on the bin pump ash storing tank; a discharging valve is arranged on the bin pump ash storing tank; a pressure ash conveying pipe is connected to a plurality of discharging valves and a pneumatic conveying ash storage; a first discharging valve is arranged at the bottom part ofthe pneumatic conveying ash storage; an additional ash conveying bypass system is mounted on an original bin pump type pneumatic ash conveying system, namely, the additional ash conveying bypass system is connected to a tooth cable type ash conveyor; the plurality of ash buckets for collecting coal ash of an electric dust collecting device are connected to the tooth cable type ash conveyor; an output port is formed in one end, far away from the plurality of ash buckets, of the tooth cable type ash conveyor; an automatic constant-force tensioning device is arranged at one end, far away from the output port, of the tooth cable type powder conveyor; and an extending section out of a section where a sealing box body is connected to each ash bucket is upwards inclined. With the adoption of theash conveying system of the coal-fired power plant, the electricity consumption cost is greatly decreased, and moreover, the production can be normally carried out without being influenced in the repairing period.

The invention relates to the technical field of soil heavy metal pollution remediation, in particular to a method for removing soil heavy metal by utilizing agricultural and forestry waste leaching liquor. The agricultural and forestry waste leaching solution is used as a leaching solution for removing heavy metals in the polluted soil, wherein the agricultural and forestry waste leach liquor is obtained by leaching agriculture and forestry waste with water or citric acid. The agricultural and forestry wastes are selected as leaching remediation raw materials, so that the method has the advantages of low cost, environmental protection, high efficiency, short remediation period, no damage to the soil environment and the like, and remediation of the heavy metal contaminated soil and resource recycling of the agricultural and forestry wastes are realized; meanwhile, the risk of secondary pollution of the leaching waste liquid to the soil or underground water is solved by utilizing the leaching residues, and conditions are created for environment-friendly integrated rapid repair and application of the heavy metals in the farmland soil-waste liquid.

The invention relates to an injurious insect automatic induction detection system and belongs to the injurious insect monitoring field. The system is mainly composed of a current induction device, a motor driving operation device, a circuit adjusting device, a cyclic cleaning device, an error elimination device, a signal recognition device, a data statistics output device and a human body safety current-limiting device. The injurious insect automatic induction detection system is characterized in that the system carries out target object recognition and counting through comparing the current induction values of different substances with the induction set values of target objects. The system has the advantages of high sensitivity in automatic induction, accurate data statistics, firm structure, stable performance and high applicability to field, and can satisfy actual needs of injurious insect monitoring and facilitate the launch of injurious insect prevention and control.

The invention relates to a strip steel sewing machine tool which comprises a rack, an upper stamping mechanism, a lower stamping mechanism and a flattening mechanism. According to the strip steel sewing machine tool, automatic and rapid sewing of strip steel on a cold rolling continuous production line is achieved, the operation efficiency and safety are improved, the labor intensity of manual welding and sewing is relieved, the production preparation time is shortened, and the productivity is improved. Strip steel sewing is conducted in a cold machining stamping mode completely, punching flanging and flattening are achieved through a servo motor and an electric cylinder, light, heat, noise and smoke dust pollution are not generated in the machining process, fluid under pressure is not needed, and the field applicability is higher. In the sewing process, an upper punching head, a lower punching head and a flattening head of different specifications and sizes can be selected and switched according to the minimum bending radius of the sewn strip steel on roller equipment of a production line, and it is guaranteed that the strip steel does not leave a scratch on the roller surface while riveting is conducted.

According to the assembly method of the interference fit steel ring structural member, proper sharp-nose pliers and wrenches are selected according to the size of the clamping ring, and generally, the sharp-nose pliers and the wrenches with the same size are selected. The elastic opening steel ring is placed on the clamping ring, the sharp-nose pliers are used for breaking off the steel ring, the clamping ring is tightly sleeved with the steel ring, the wrench is used for assisting in pressing the steel ring, and after the steel ring is assembled to the boss of the clamping ring, the sharp-nose pliers and/or the wrench are/is used for knocking the steel ring into the groove of the clamping ring. According to the assembling method, complex feature assembling is completed only through the sharp-nose pliers, the wrench and the electric hand drill chuck. By means of the assembling method, for assembling of the interference fit steel ring structural parts, special clamps do not need to be manufactured, the technical effect of a complete set of tools can be achieved only through simple tools, the field applicability is high, the tools can be used at any time, and the problem that the machining efficiency is low due to the fact that the tools cannot move or are difficult to move is solved.

The invention relates to a high-voltage cable joint protection device. According to the technical scheme, the device comprises a protection shell and a protection cover, the edge of the protection shell is provided with a plurality of shell sealing rings, the protection shell is detachably connected with the protection cover, one side of the protection shell is provided with a first connector base, the other side of the protection shell is provided with a replacement groove, and a connector base assembly is inserted into the inner side of the replacement groove in a replaceable mode. The joint protection device has the beneficial effects that the protection shell and the protection cover achieve two-way or three-way cable fixing protection by replacing different connector base assemblies, the connector base assemblies are selected according to the number of field cable connectors and the mode of connector bases, and cable sheaths can be fixed through clamps or cable connectors; different types of cables are fixed through different connector connecting seats, the shell sealing ring and the replacement plate sealing ring ensure that the cable connector protection box body is sealed, waterproof and dustproof, the field applicability is high, different types of protection boxes do not need to be carried, and the field working efficiency is improved.