30results about How to "Normal supply" patented technology

The invention discloses a centrifugal chiller and a method for quick start-up after power failure, which is characterized in that the quick unloading device of the compressor includes a four-way valve and a quick unloading valve, specifically: a quick unloading valve is arranged outside the four-way valve to communicate with the four-way valve The high-pressure oil outlet of the valve and the high-pressure oil chamber of the piston cavity, the flow channel where the quick unloading valve is located and the internal flow channel of the four-way valve simultaneously form a high-pressure oil inlet channel; another quick unloading valve is set outside the four-way valve to communicate with the piston cavity The low-pressure oil chamber and the oil tank, the low-pressure chamber in the piston chamber are connected to the oil tank through the other quick unloading valve and the internal return channel of the four-way valve; an adjustable guide vane is arranged at the inlet of the compressor, and the adjustable guide vane is controlled by the four-way valve. The valve controls opening and closing. Quick startup can be achieved in the event of an abnormal disconnection of the main power supply and a short recovery.

The invention relates to a comprehensive recovery and utilization system of water-cooling and heat sources for desktop computers used in computer rooms and a working method thereof. equipment, auxiliary heating cabinets, cooling towers and electrical control cabinets. The hot water pipe and the steam pipe are connected through the mixer, the mixer is respectively connected with the auxiliary heat cabinet and the cooling tower through the pipeline, and the auxiliary heat cabinet and the cooling tower are connected with the cold water pipe through the pipeline. The invention has reasonable design and convenient use, can concentrate and reuse the heat generated by computer CPU and graphics card, improve energy utilization rate and save energy consumption.

The invention provides a low-temperature attitude control engine propellant supply pipeline system, including a low-temperature fuel annular pipeline, a low-temperature oxidant annular pipeline, a low-temperature heat insulation bracket, a low-temperature attitude control engine, a control valve group, and a throttle orifice group; the low-temperature fuel annular pipeline and the low-temperature oxidant annular pipeline are fixed to the general assembly structure of the propulsion system through a low-temperature heat-insulating bracket, and the top of the low-temperature attitude control engine is connected to the low-temperature fuel annular pipeline through a low-temperature fuel control valve. The oxidant control valve is connected with the low-temperature oxidant annular pipeline, and the ends of the low-temperature fuel annular pipeline and the low-temperature oxidant annular pipeline are equipped with bifurcated branches. Control valves are set on the bifurcated branches, and different apertures are connected in series behind the control valves. throttle orifice. The supply pipeline system of the present invention can solve the problems of large heat leakage of low-temperature propellant during pipeline transportation, control of low-temperature attitude control engine inlet conditions, and adjustment of propellant pre-cooling consumption under multiple working conditions.

The invention provides a signal injection topology identification device and method based on an N line. The device comprises a power supply module, an MCU main control module, and a zero-crossing detection module, an HPLC module, a signal receiving module, a signal injection module and a 485 module which are connected with the MCU main control module, according to the scheme, a branch box can be conveniently and rapidly accessed, topology identification of the branch box and an electric energy meter under a transformer area is realized, troubleshooting and locking of fault points are facilitated, electric energy supply of the fault points is cut off at the first time, faults are timely maintained, normal and efficient supply of electric power is ensured, and rapid development of ubiquitouselectric power Internet of Things can be effectively promoted.

The invention relates to a method and a device for improving the oil-supplying reliability of a lubricating-oil system of a power generating set. The method is characterized in that in a control logic of a DCS (Distributed Control System) of the lubricating-oil system of the power generating set, when the low voltage of a safety section is related to tripping, additionally setting time delay of 2-5 seconds for an alternating-current lubricating-oil pump, so as to avoid the voltage-loss time of the alternating-current lubricating-oil pump for 1-2 seconds when a power switch of the safety section is switched, and ensuring no tripping of the alternating-current lubricating-oil pump when the power switch of the safety section is switched; setting a low-voltage instantaneous linked starting condition of the safety section in the hard-wiring condition of related starting of a direct-current lubricating-oil pump, setting a low-voltage instantaneous starting condition into failure of the alternating-current lubricating-oil pump in the linking logic of the direct-current lubricating-oil pump, and ensuring that oil pressure is provided by the direct-current lubricating-oil pump when in short-time voltage loss of a power switching bus of the safety section. The method and the device have the advantages that the oil-supplying reliability of the lubricating-oil system of the power generating set is improved from two aspects, the reliability is high and normal oil supplying of the lubricating-oil system at the low voltage of the safety section and under the condition that the alternating-current lubricating-oil pump fails is ensured.

The invention discloses a full-automatic mobile phase bubble separation device, which comprises a tubular capturing trap, wherein a mobile phase liquid dripping passage is formed in an upper cover at the upper end of the tubular capturing trap; a guide device is arranged at the lower end of the upper cover, and a clearance is formed between the guide device and the periphery of the tubular capturing trap; the lower end opening of the mobile phase liquid dripping passage is positioned on the outer wall of the guide device; the mobile phase liquid dripping passage is connected with an upper perfusion pipe, and the lower end of the tubular capturing trap is provided with a mobile phase liquid drop outlet and connected with a lower perfusion pipe; and upper and lower liquid level sensors are arranged on the side walls of the tubular capturing trap respectively, the side wall of the tubular capturing trap is provided with an air outlet and connected with an air extraction pressure-keeping pump through a pipeline, and the upper and lower liquid level sensors are electrically connected with the air extraction pressure-keeping pump through a control loop. The device realizes separation ofvisible bubbles and liquid in the falling process of the mobile phase liquid drops, enables the mobile phase liquid drops to slowly flow down along the inner wall of the tubular capturing trap, and can effectively prevent the mobile phase liquid drops from directly dripping into the liquid level at the lower end of the tubular capturing trap.

The invention discloses an oil circulation device and a method of a pressure change device. The pressure change device is installed on a gearbox, a hydraulic steering device and a brake device respectively and borrows lubricating oil from each device for lubrication, the oil supply manner can be simplified, normal oil supply can be guaranteed, and maintenance-free of the pressure change device isrealized. The invention provides four installation methods of installing the pressure changing device, and the installation methods can be applied to various applications.

The invention provides an auxiliary ignition method which is used for automobile cold start and in which air is preheated by standing vortex micro combustor and a device thereof, relating to the internal combustion engine technology. The method is that: a little carbinol / ethanol fuel is combusted in the micro combustor, generating high temperature fumes, and then the fumes mix with the combustionengine intake air, thereby improving the temperature of the air entering the combustion engine and resolving the problem of the cold start existing in the carbinol / ethanol automobile. The device is arranged behind an air cleaner and in front of an air intake manifold and comprises a standing vortex micro combustor and a carbinol / ethanol preheating evaporator. The carbinol / ethanol liquid make a mixed firing with the air in the micro combustor after the preheating evaporation of a preheater, and generates the high temperature fumes which mix with the main air flow of the automobile intake air. The invention resolves the problem of the cold start by increasing the temperature of the intake air; moreover, the device is simple and convenient in operation.

The present invention relates to an automatic welding device for vehicle frame side beam comprising two adjusting bases equipped face to face for placing frame side beam, at least two support saddles equipped between the two adjusting bases, a hydraulic clamp equipped on the support saddle and a welding car supported by two sides of the frame side beam; the upper ends faces of the two adjusting bases are relatively tilted; the upper end faces of the support saddles are lower than the lowest point of the upper end face of the adjusting base. The upper ends faces of the two adjusting bases are relatively tilted and the upper end faces of the support saddles are lower than the lowest point of the upper end face of the adjusting base, i.e. the two adjusting bases and every support saddle form a curved surface; welding is implemented on the curved surface, i.e. a camber is preset before welding; when the frame side beam is taken down after welding, the frame side beam begins to deflect and deform inversely, i.e. the preset camber is balanced out by the deflection and deformation to control the frame side beam camber in the permitted range which ensures the production quality; in addition, the welding car is adopted for the implementation of the automatic welding; in this way, the welding labor intensity is small.

Provided is a nitrogen generating system for ships. The nitrogen generating system consists of the following apparatuses sequentially connected by means of pipelines: a compressor (10), comprising at least one compressing unit (101) used for providing compressed air; a filtering means (70), comprising at least one filtering unit used for filtering the compressed air; a nitrogen generator (20), comprising at least two nitrogen generating units (201) used for generating nitrogen; an optional nitrogen buffer (40); and a flow and pressure regulating means (30) used for regulating flow and pressure. The system does not have a refrigeration dryer and an air buffer tank, and therefore, the system is simple in structure and the investment and energy consumption of apparatuses are reduced; meanwhile, the system can output nitrogen having low flow and high pressure.

The invention provides a self-operated control type low-pressure normally-open structure for pressure reduction, and belongs to the technical field of adjusting and controlling devices. The self-operated control type low-pressure normally-open structure for pressure reduction comprises a filter, a pressure reducing valve and a low-pressure normal open valve. According to the self-operated controltype low-pressure normally-open structure for pressure reduction, the filter is arranged, so that blockage of the pressure reducing valve and the low-pressure normal open valve is prevented, meanwhile, impurities can be filtered, and the fluid with higher cleanliness is provided; the pressure reducing valve and the low-pressure normally-open valve can be arranged in parallel, so that when upstreampressure is large, the pressure reducing valve can be opened, the low-pressure normal open valve can be closed, and the pressure reduction and supply of the fluid are realized; when the pressure reducing valve cannot be opened under the condition that the upstream pressure is small, the low-pressure normal open valve is opened, the supply of the fluid can also be realized; and the adaptability ishigher, so that normal proceeding of people in production and life is guaranteed, the influence on the production and life of people is avoided, and supportability of the self-operated structure is higher.

The present invention is preheating intake method and device for cold start of automobile. Alcohols or ethers are burnt to preheat air before the air is mixed with air intake to the engine. The auxiliary igniter set between the air inlet and the intake manifold of the engine includes one sealed cavity, one fuel inlet pipe connected between the fuel tank and the nozzle inside the sealed cavity, onepreheating evaporator in the fuel inlet pipe to heat the fed alcohol or ether fuel and to evaporate to form vapor flow in the nozzle and one igniting unit. By means of the auxiliary igniter, the alcohol or ether vapor and the air are mixed and ignited to produce high temperature fume, which is mixed with the main gas flow to raise the intake temperature of the automobile engine.