36results about How to "Reduced operational reliability" patented technology

The invention discloses an electromagnetic hybrid device and a method for synergetic compensation of the high-speed railway multi-station electric energy quality. Active power three-phase transfer of a multi-station traction power supply system is achieved by the aid of an RPC (railway power conditioner), reactive power of designated capacity is outputted for compensation, bus negative sequence components are further reduced with power factor guaranteed, and an MSVC (magnetic-control static var compensator) outputs reactive power to compensate residual bus negative sequence current. By the aid of multi-station synergetic optimum compensation and RPC power transfer characteristics, installed capacity of the MSVC is effectively saved, local dynamic response speed is increased, manufacture cost of the whole device are reduced, and running reliability of the whole device is improved. The device and the method can be used for compensating the electric energy quality of the electrified railway traction power supply system and particularly used for negative sequence compensation, reactive compensation and harmonic wave filtering, and have good application prospect on the occasions that high-speed railways are extremely unbalanced in load.

The embodiment of the invention relates to a relay protection system and a special multi-core Soc chip architecture thereof. The special multi-core Soc chip architecture comprises a first dual-channelDDR, a second dual-channel DDR, a management processing core, a communication data processing core, a protection locking processing core, a protection logic processing core, a first secondary cache and a second secondary cache which are integrated on a chip. According to the special multi-core Soc chip architecture for the relay protection system, the four processing cores, the first dual-channelDDR, the second dual-channel DDR, the first secondary cache and the second secondary cache are integrally arranged on the chip, so that the original complex multi-chip hardware architecture is simplified; and low operation reliability and stability of the relay protection system caused by unstable connection of a multi-chip hardware structure are also avoided, and the operation reliability and stability of the relay protection system are improved. The technical problem that the operation stability and reliability of a relay protection product are influenced due to the fact that an existing relay protection multi-chip framework adopts a framework that a plurality of chips adopt a plurality of clamping plates and the multi-chip framework is complex is solved.

The invention discloses a method and device for determining abnormal circulation of air conditioner refrigerants and an air conditioner. The method includes the steps that in a refrigeration mode of the air conditioner, the indoor environment humidity of the indoor side of the air conditioner is acquired, and the evaporator pipe temperature and the indoor environment temperature of the indoor side are acquired; a first temperature difference between the indoor environment temperature and the evaporator pipe temperature and a second temperature difference between the pre-stored initial evaporator pipe temperature and the evaporator pipe temperature are determined, and whether the first temperature difference and the second temperature difference are smaller than or equal to corresponding preset values under the indoor environment humidity or not is judged; and when the first temperature difference and the second temperature difference are both smaller than or equal to the corresponding preset values, the abnormal circulation of the refrigerants of the air conditioner is determined. By means of the scheme, the defects that in the prior art, the mistaken judgment rate is high, the running reliability is low, and the maintaining difficulty is large can be overcome, and the beneficial effects that the mistaken judgment rate is low, the running reliability is high, and the maintaining difficulty is small can be achieved.

An embodiment of the invention discloses an air conditioner, an air conditioner control method and an air conditioner control device. The air conditioner control method includes: detecting the environment temperature of the air conditioner; determining a target temperature range of the environment temperature, and acquiring a first target preset time and a first target preset temperature corresponding to the target temperature range; continuously acquiring target temperatures on the air conditioner within the first target preset time, wherein the target temperatures at least include a plurality of temperatures detected from fins of an outdoor unit of the air conditioner; judging whether a minimum value in the target temperatures is smaller than or equal to the first target preset time or not; under the condition that the minimum value in the target temperatures is smaller than or equal to the first target preset time, controlling the air conditioner to defrost. By the aid of the air conditioner, the air conditioner control method and the air conditioner control device, the problem of inaccuracy of a frosting control manner of the air conditioner in the prior art is solved, the problem of reduction of operational reliability and capability of a unit due to uncleanness in defrosting or frostless frosting can be further avoided, and frosting accuracy of the air conditioner is improved.

The invention discloses a transmission mechanism for a permanent magnetic gear. The transmission mechanism comprises a stator assembly, an adjustable magnetic ring assembly, a rotor assembly and an enclosure assembly. The transmission mechanism is only provided with a layer of permanent magnet, so that the processing and assembling difficulty is smaller while a permanent magnet is saved. The permanent magnet is fixed by a built-in hole in a rotor core, and the condition that the permanent magnet is thrown away due to a centrifugal force generated by the rotor core during high-speed rotation is avoided, so that the permanent magnet is safe and reliable. The transmission ratio of the transmission mechanism can be changed according to the requirement; the output rotating speed of the transmission mechanism can be set to be constant according to the requirement. A damping bar made of a conductor material is arranged on the rotor core and can be used for cutting a magnetic field generated by a stator winding and forming induced current; a lorentz force generated by the induced current can form damping, so that the rotating speed and the torque of the rotor after starting are rapidly converged and the rotor stably operates; heat generated by the stator assembly, the adjustable magnetic ring assembly and the rotor assembly can be taken away by air current of the transmission mechanism.

The invention relates to a permanent-magnetic motor, in particular to a ship propelling-type permanent-magnetic motor, which aims at solving the problems of the existing permanent-magnetic motor that the reliability in running is low, the capacity expansion is limited, the air-pore magnetic density is low, the power density is low, the structural strength is low, the temperature increasing is difficult for meeting the running requirement, and the oblique running working condition of a ship propelling system is difficult to satisfy. The ship propelling-type permanent-magnetic motor comprises a stand, a front end cover, a rear end cover, a stator structure, a rotor structure, a three-bearing structure and an air cooling structure; the rotor structure comprises a rotating shaft, an inner seal ring, a fan, a circular nut, a first rotor pressure ring, a rotor iron core, a second rotor pressure ring and a balance disc; the outer side surface of the first rotor pressure ring and the outer side surface of the second rotor pressure ring are respectively and uniformly provided with N outer teeth which are equally spaced along the circumferential direction; the outer ring of the end surface of the rotor iron core is circumferentially provided with N groups of magnetic steel grooves at intervals; each group of magnetic steel grooves consists of four magnetic steel grooves which are symmetrically distributed in a U shape. The ship propelling-type permanent-magnetic motor is applicable to a ship propelling system.

A process for producing pipeline-ready or refinery-ready feedstock from heavy hydrocarbons using a high-performance solvent extraction process with high local solvent-to-process fluid ratios yet maintaining low overall solvent- to-process fluid ratios, by first performing mild thermal cracking on the heavy hydrocarbons and then separating asphaltene-rich fractions from a resulting thermally affected fluid so that the high solvent-to-oil ratio portion of the process acts only on those asphaltene-rich fractions, and producing a dry, solid asphaltene as an end-product.

The present invention relates to a method of improving a heavy hydrocarbon, such as bitumen, to a lighter more fluid product and, more specifically, to a final hydrocarbon product that is refinery-ready and meets pipeline transport criteria without the addition of diluent. A solid asphaltene by-product is created for easy handling and further processing. The invention is targeted to enhance Canadian bitumen, but has general application in improving any heavy hydrocarbon. The process comprises: (a) pre-heating a process fluid in a heater to a designed temperature; (b) moving the pre-heated process fluid to a reactor, and optimally converting asphaltenes in the process fluid within the reactor to produce a stream of thermally affected asphaltene-nch fraction( s), and a stream of non-condensible vapour and lighter liquid hydrocarbon(s); (c) deasphalting the thermally affected asphaltene-nch stream with a solvent extraction process into a stream of heavy deasphalted oil (DAO) and a second stream containing concentrated asphaltene; (d) separating dry thermally affected asphaltene solids from the second stream in a separation unit, recovering the process solvent; (e) a produced refinery feedstock comprising at least one of the produced streams.

The invention discloses a novel air medium type sludge drying system which comprises a sludge drying machine, the bottom end of the sludge drying machine is connected with an air outlet duct, the air outlet duct is connected with an inlet of a cyclone dust collector, the top end of the cyclone dust collector is connected with a circulating air return duct, and the bottom end of the cyclone dust collector is connected with an ash discharge port. The circulating air return duct is connected with the inlet of a circulating fan. The sludge drying system is scientific and reasonable in structure and safe and convenient to use, a closed hot air circulation sludge drying system is adopted, a hot air heating system with electricity or steam as a heat source is high in operation energy consumption, a system with a heat pump as a hot air heating device is complex in structure, a waste gas condensation system generates a large amount of condensed waste water, and the treatment cost is high; in addition, components and flow of the hot air can be changed after the hot air is recycled for a long time, and finally safety of system equipment and stability of a system are affected.

The embodiment of the invention provides a magnetron cooling control method for a microwave oven, and the microwave oven, and belongs to the field of microwave ovens. The interior of the microwave oven is provided with a magnetron for generating microwave, and a cooling fan for cooling the magnetron. The method comprises the steps: detecting set work time T of the microwave oven; controlling the magnetron and the cooling fan to start at the same time when the set work time T is greater than a threshold value Ts, wherein the operation time of the magnetron is T-t, and the operation time of the cooling fan is T, so as to enable the magnetron to stop earlier than the cooling fan by the time t (t is within the range shown in the description). According to the technical scheme of the invention, the method can reduce the manufacturing and installation cost of the microwave oven while improving the working reliability of the microwave oven and prolonging the service life of the microwave oven.

In a quick-change system for exchangeable machine elements, particularly in a container processing machine in which the machine element (E) can be brought into a target position and can be localized in a target position by a securing unit comprising at least one securing element, at least a second securing unit (P2) is provided with which a machine element that either has not been brought into the target position or that has moved out of the target position (X) can be localized in a securing position. The securing position is detected and evaluated as grounds for a corrective action before commencing an operation or during the operating sequence before a corrective action is initiated and executed.

The invention discloses a machine examination method for an electric power post capability model skill assessment. The system comprises an answering time calculation system, a mouse sliding distance calculation system, a mouse acceleration calculation system, an error option modification statistics system and a hesitance scoring system, and the hesitance scoring system carries out score evaluationaccording to data of other systems, so that the proficiency of a position where an examinee is located is evaluated. The method has the advantages that the method is simple in algorithm, easy to implement and low in cost, extra hardware is not needed, psychological means such as guessing and eliminating during answering can be detected to a certain extent, the hesitance degree serves as an examination reference basis, the truth degree in the choice question examination process is effectively improved, and the choice question examination quality is expected to be improved to a certain extent.

The invention provides an anti-reverse structure for a compressor and the compressor. The anti-reverse structure comprises an anti-reverse valve plate and an elastic element, wherein the anti-reverse valve plate is provided with a first surface and a second surface which are arranged oppositely in the thickness direction of the anti-reverse valve plate; the anti-reverse valve plate is further provided with a communication structure penetrating in the thickness direction of the anti-reverse valve plate; the elastic element is propped against the first surface of the anti-reverse valve plate; in the compression process of the elastic element, the first surface and the second surface of the anti-reverse valve plate can be communicated through the communication structure; when the elastic element returns and springs back, the first surface and the second surface of the anti-reverse valve plate are not communicated. Due to the fact that the anti-reverse valve plate is provided with the penetrating communication structure, gas on two sides of the anti-reverse valve plate can be communicated through the communication structure, so that the pressure values of the gas on the two sides of the anti-reverse valve plate are balanced, the vibration and the noise of the anti-reverse valve plate can be effectively reduced, and the operation noise of the compressor is further reduced.