62results about How to "Affect safe operation" patented technology

The invention provides a thermal control loop heat pipe of an integrated structure. The thermal control loop heat pipe comprises a structure thermal control hollow metal pipe body filled with phase change media. The structure thermal control hollow metal pipe body is a loop heat pipe (LHP) formed by connecting a condensation pipe and an evaporator in series, the two sides of the evaporator are connected with liquid accumulators where a steam pipe and a reflux pipe pass, and the liquid accumulators on the two sides are both filled with liquid working media. After heat emitted by a heat source is absorbed by an evaporation pipe, the phase of the liquid working media is changed, the liquid working media enter the condensation pipe through the steam pipe to release heat to be condensed and flows back to the evaporation pipe through the reflux pipe, and then a complete loop heat pipe cycle is completed. According to the thermal control loop heat pipe, integration is adopted, a semiconductor refrigeration manner is used, heat emitted out of the interior of the complex structure can be effectively led out accordingly, and the application range of a heat pipe thermal control system is greatly expanded.

The invention relates to a centralized air supply device of a railway car equipment compartment and an equipment compartment ventilation system. The equipment compartment is composed of a apron board, a bottom plate, an end plate and a framework, one or two centralized air supply devices are installed in the equipment compartment, first air inlets and first air outlets are formed in the apron board, an air inlet of the centralized air supply device is communicated with the first air inlets in the apron board, and an air outlet of the centralized air supply device is communicated with the equipment compartment and used for providing cooling air for air-using equipment in the equipment compartment. Inlet air for the air-using equipment in the equipment compartment is extracted in the equipment compartment, the heat radiation and air filtering effects are good, micro-positive pressure in the equipment compartment is guaranteed, the ways that dust and ice snow enter the equipment compartment are reduced, the number of the first air inlets in the apron board is reduced, and manufacturing and maintenance cost is lowered so that cars can run safely in extremely cold, strong sandy wind, high-temperature environments and other severe environments.

The application discloses a transformer winding deformation and capacitance-type bushing fault detection device and method capable of controlling opening and closing of the DC control switch and the detection control switch, measuring the resonance wave, the resonance wave time and the frequency characteristic of the transformer winding. The measured resonance wave is compared with the historical resonance wave to determine whether the transformer winding is deformed or not. The partial discharge magnitude of the capacitance-type bushing is measured, and the capacitance and the dielectric dissipation factor of the capacitance-type bushing are estimated according to the resonance wave time and the frequency characteristic. The partial discharge magnitude, the capacitance and the dielectric dissipation factor are analyzed to determine whether the capacitance-type bushing has defects or not. The device and method provided by the present invention can detect the transformer winding deformation and the capacitance-type bushing fault in time to protect the transformer from being influenced by emergency.

The invention relates to a start control method and system for a variable-frequency air conditioner and the air conditioner. The start control method for the variable-frequency air conditioner comprises the following steps that a target frequency Fd, a first frequency Fa and a second frequency Fb are set; a variable-frequency compressor is controlled to operate at the frequency Fa till a pressure difference is established, and a four-way valve of the variable-frequency air conditioner reverses; the frequency of the variable-frequency compressor is controlled to drop to the frequency Fb from the frequency Fa, the variable-frequency compressor operates at the frequency Fb for the time T1, and pressure buffering and preheating are conducted on the variable-frequency air conditioner; the target frequency Fd is compared with the frequency Fb, and the frequency of the variable-frequency compressor is controlled to directly drop to the target frequency Fd if the target frequency Fd is smaller than the frequency Fb; the second frequency Fb of the variable-frequency compressor is controlled to be stabilized at the target frequency Fb after frequency rising and frequency dropping are conducted multiple times if the target frequency Fd is larger than the frequency Fb. According to the start control method and system for the variable-frequency air conditioner and the air conditioner, frequency rising of an air-conditioning system can be achieved, and the situations that safe operation of the compressor is affected due to the fact that oil is excessively discharged during frequency rising of the compressor and other components of the system are damaged due to the fact that the pressure difference changes too rapidly are avoided.

The invention belongs to the technical field of machining, and particularly relates to a three-jaw chuck. The three-jaw chuck comprises a chuck body and clamping jaws, wherein each of the three clamping jaws is formed through the mode that three transverse pressing blocks are adopted to mutually be overlapped and spliced, guiding sliding grooves are formed inside the pressing blocks at the bottommost ends of the clamping jaws, and clamping grooves are formed in the bottom ends of the guiding sliding grooves; sliding blocks are slidably arranged in the guiding sliding grooves, and pressing plates are connected to the bottom ends of the sliding blocks; the pressing plates and the clamping grooves are mutually clamped and matched; threaded locking holes are formed in the sliding blocks; countersunk threaded holes are formed in the vertical directions of the clamping jaws; the countersunk threaded holes are in threaded connection with the threaded locking holes through inside hexagonal bolts; the bottom ends of the threaded locking holes are provided with bearings, and rotating columns are connected in the bearings; and inner hexagonal bolts are arranged in the rotating columns in an inserting mode. The phenomenon that the clamping force of the chuck body to a cylinder is small due to the fact that the diameter of the machined cylinder is different, the cylinder breaks or is damaged under the state that the cutting force is large, and therefore the safe operation of the chuck body is influenced is prevented.

The invention relates to a magnetic levitation bearing framework and a magnetic levitation bearing. The magnetic levitation bearing framework comprises an annular framework body of a hollow structure. The framework body is used for allowing a working coil to be wound thereon. A coil outlet through which the working coil can come out is formed in the framework body. According to the magnetic levitation bearing framework, the annular framework body of the hollow structure is arranged and can be used for allowing the working coil to be wound thereon, and the coil hole is formed in the magnetic levitation bearing framework so that the working coil can come out through the coil outlet, and the situations that abrasion is caused due to friction between the working coil and a bearing core or between the working coil and other components when the working coil comes out, an insulating layer is damaged, and the service life of the working coil is shortened, or safe operation of a whole assembly is affected are prevented easily.

The invention discloses a telecommunication equipment upgrading and maintenance method for a telecommunication network transmission system. The method comprises the following steps of: A10, designing functional instruction sets of each piece of telecommunication equipment to form protocols by using an extensible markup language (XML) according to the functions of the telecommunication network transmission system respectively, and designing corresponding software for realizing corresponding functional instructions in the protocols on each piece of equipment according to the protocols; A20, saving corresponding protocols and software supported by the telecommunication equipment on the telecommunication equipment; A30, setting a synchronizer at a server in the telecommunication network transmission system, acquiring the functional instruction sets and the software on each piece of controlled telecommunication equipment according to the instructions of the synchronizer, and updating the server; and A40, selecting a proper opportunity, and upgrading the software of the corresponding telecommunication equipment by utilizing the instruction sets and the software obtained by the step A30. In the method, a network management system can automatically discover incompatible or temporarily unsupported telecommunication equipment, acquire related resources from the telecommunication equipment and upgrade own instruction set, thereby supporting the management of newly added telecommunication equipment.

The invention discloses a special tool for quickly removing ice coatings of a power transmission line. The tool comprises a deicing box, a gap-adjusting mechanism, an ice crushing mechanism and a wiretake-up mechanism; the inner wall of the deicing box is slidably connected with the gap-adjusting mechanism; the top of the gap-adjusting mechanism is fixedly connected with the ice crushing mechanism; and one end of the outer side of the deicing box is fixedly connected with the wire take-up mechanism. The tool of the invention is compact in structure. Since the gap-adjusting mechanism is adopted, a gap between a first ice crushing gear and a second ice crushing gear can be adjusted according to the diameter of the power transmission line through a gap-adjusting screw rod under the action ofa left-hand thread and a right-hand thread, so that the tool can be used for power transmission lines of different diameters, and therefore, the application range of the ice crushing tool is expanded; a wire take-up box is adopted, the length of a drawstring can be adjusted flexibly according to needs, and therefore, the structure of the ice crushing tool is flexible and adjustable, the practicability of the ice crushing tool is greatly improved, the ice coatings of wires inside a span can be quickly treated, and the ice coatings can be prevented from affecting the safe operation of the transmission line.

The invention belongs to the field of pneumatic control systems of railway wagons. In order to realize the function of opening and closing of bottom doors during an unloading process of entire freight cars, the invention provides a control system for controlling the opening and closing of the bottom doors of entire coal hopper cars with a model 120 valve. The control system comprises a train main pipe connected with a locomotive air compressor, wherein the train main pipe is equipped with angle cocks for controlling on-off connection with each car; a plurality of bottom door opening and closing control units are connected with the external part of the train main pipe; each bottom door opening and closing control unit correspondingly controls the opening and closing of the bottom door of each car; the bottom door opening and closing control units have the function of controlling the opening and closing of the bottom doors and the function of self-locking with pressure holding when the bottom doors are closed; and input signals of the bottom door opening and closing control units are air pressure variations provided by the train main pipe. The control system utilizes an inflating and relieving position, a common retarder position and a pressure holding position of the model 120 control valve to control the operation of a bidirectional air cylinder, thereby completing the opening and closing control of the bottom doors of the entire coal hopper cars.

The invention discloses an energy-saving and environment-friendly heat-conducting oil boiler which includes a boiler main machine, a waste heat boiler and an air preheater. The waste heat boiler includes a vertical body; the vertical body is internally provided with a vertical snakelike heat exchange tube, and the straight pipe section of the vertical snakelike heat exchange pipe is inclined upwards; an upper outlet of the vertical snakelike heat exchange pipe communicates with a steam inlet of a steam drum; a common downcomer is arranged at the bottom of the steam drum, and a steam outlet pipe seat is arranged at the top of the steam drum; the air preheater includes an outer frame, and a plurality of vertical heat exchange pipes are arranged inside the outer frame; a flue gas outlet of the boiler main machine is connected with a flue gas inlet in the top of the waste heat boiler; and the flue gas outlet in the bottom of the waste heat boiler communicates with the vertical heat exchange pipes in the air preheater. The final exhaust gas temperature of the boiler can be effectively reduced by installing a two-stage energy-saving device including the waste heat boiler and the air preheater at the tail end of the boiler main machine, so that the final exhaust gas temperature of the boiler is not higher than 100 DEG C, and the thermal efficiency of the boiler is greatly improved.

The invention provides a dehumidifying method and system. A humidity sensor detects the humidity value of gas in a control box, and a first controller controls a dehumidifying device with the humidity value detected by the humidity sensor to adjust the humidity of gas in the control box, thus controlling the dryness in the control box of transformer equipment, and solving the problem of frequent grid accidents caused by the reason that components in the control box are easily damped to influence the safety operation of the transformer equipment.

The invention discloses an exciter cooler inner and outer leakage liquid monitoring system and method. The monitoring system comprises an inner leakage liquid monitoring system and an outer leakage liquid monitoring system which are independent. The inner leakage liquid monitoring system comprises an inner leakage liquid collection pond, a leakage liquid collection pipe and an inner leakage liquidmonitoring device, the inner leakage liquid collection pond collects inner leakage liquid of an exciter cooler, the inner leakage liquid is introduced into the inner leakage liquid monitoring devicethrough the leakage liquid collection pipe so as to achieve monitoring of the inner leakage liquid in the cooler, the outer leakage liquid monitoring system comprises a water receiving disc, a leakageliquid collection pipe and an outer leakage liquid monitoring device; the water receiving disc collects outer leakage liquid of the exciter cooler, the outer leakage liquid is introduced into the outer leakage liquid monitoring device through the outer leakage liquid collection pipe so as to achieve monitoring of outer leakage liquid of the cooler. The method is the specific monitoring work stepof the monitoring system. According to the system and method, in the exciter running process, the inner pipeline leakage condition and the outer pipeline leakage condition of the cooler can be effectively monitored at the same time.

The invention discloses a hanging and rotating preventing thrust sliding bearing device. The thrust sliding bearing device mainly comprises a thrust pad, a pivot, a hanging preventing block, a support plate, a frame and a thrust disc, wherein the pivot is fixedly connected with the thrust pad, and is assembled with the support plate; the hanging preventing block is fixedly mounted on the support plate; the support plate is fixedly mounted on the frame; the thrust pad is arranged at the lower part of the thrust disc. The hanging and rotating preventing thrust sliding bearing device solves the problem that when a hanging and rotating preventing device is arranged independently, the structure is complex and the mounting is inconvenient, and particularly mounting difficulty is caused under certain conditions of restricted mounting space, and is widely suitable for being used in coordination with various thrust sliding bearings, particularly suitable for being used in coordination with inclinable pad thrust sliding bearings.

The application provides a dehumidifying method and system. The dehumidifying method and system is characterized in that a humidity sensor detects the humidity value of a gas in a control box, a first controller utilizes the humidity value detected by the humidity sensor to control a dehumidifying device to control the humidity of the gas in the control box, so that the drying degree control in the control box of the power transformation equipment is realized, and the problem that the elements in the control box are affected with damp easily to influence the safe operation of the power transformation equipment and cause the frequent power grid accidents is avoided.

The invention discloses a coke oven ascension pipe crude gas waste heat recycling system. The waste heat recycling system comprises an ascension pipe heat exchanger. The ascension pipe heat exchanger comprises an outer sleeve, and the inner wall of the outer sleeve is connected with an inner sleeve to form a double-sleeve structure. A center pipe is disposed in the center of the inner sleeve. A diffluence and confluence channel is disposed at the bottom of the outer sleeve, the inner sleeve and the center pipe. The inner wall of the inner sleeve and the outer wall of the center pipe are respectively provided with a heating surface. The connecting portion at the top of the outer sleeve and the inner sleeve is provided with a bellows baffling area. The top of the center pipe is provided with a center pipe baffling area. The outer sleeve, the inner sleeve and the center pipe are respectively provided with a spiral backflow channel. On the premise that a coke oven is safely operated and other technology requirements for the crude gas can be met, more than 60% of the crude gas can be recycled by the ascension pipe heat exchanger effectively, the amount of ammonia for cooling the crude gas is reduced, and the amount of poisonous and harmful waste water in the crude gas purifying process is reduced.