69results about How to "Smooth oil return" patented technology

The invention discloses an aluminum honeycomb type evaporation plate and a processing molding method thereof. The evaporation plate adopts a high strength aluminum alloy plate and consists of an upper plate, a lower plate, an inlet pipe and an outlet pipe, wherein the two high strength aluminum alloy plates are overlapped and welded together by a solid-phase stir friction connecting method; the inlet pipe and the outlet pipe are inserted in the upper end and the lower end between the two high strength aluminum alloy plates and are connected with the high strength aluminum alloy evaporation plate body by using an electric arc welding method; and then the evaporation plate is finally molded through a mould and high-pressure bulging technology.

The invention relates to an oil-return control method of a large-head long-piping heat pump air conditioning system, which is characterized in that a bypass pipe is respectively installed between a condenser and the bottom part of an evaporator and between the condenser and the lower part of a compressor air suction pipe of the large-head long-piping heat pump air conditioning system, wherein the bypass pipe is tangentially connected with the condenser and the compressor air suction pipe; the flow rate of refrigerant inside the pipeline and the running time of the system are instantly monitored, when the flow rate of the refrigerant reaches a given quantity and the running time reaches a given time, the bypass pipe is opened, the high-pressure refrigerant liquid is spayed into a lubricant converging area on the bottom part of the evaporator or on the lower part of the air suction pipe in a tangential direction after being throttled by the bypass pipe, so the accumulated lubricant inside the refrigerant pipe with stoppage is brought back to the compressor so as to realize the successful oil return of the system. Under the condition that the normal work of the heat pump air conditioning system is free from being influenced, the oil return efficiency of the system can be effectively improved, the running stability of the system can be improved, the compressor can be prevented from having malfunction because of the oil shortage, and the high-efficient running of the large-head long-piping heat pump air conditioning system can be ensured.

The invention discloses an embedded oil charging structure for a high-pressure fuel oil system. A lateral oil charging pipe is transversely embedded into a gas distribution camshaft frame and an air valve guide barrel; an oil sprayer is vertically arranged in a cylinder cover and the air valve guide barrel, and is used for charging oil laterally; a lateral oil charging pipe is pressed tightly onto the side wall of the oil sprayer by adopting a lateral compression nut, and is screwed on the gas distribution camshaft frame; an oil sprayer assembly is pressed tightly into a cylinder cover inner hole by adopting a top end compression nut, and is screwed on the air valve guide barrel; two O-shaped sealing rings are distributed on the lateral oil charging pipe and the air valve guide barrel in a matching way; an O-shaped sealing ring is distributed on the lateral oil charging pipe and the gas distribution camshaft frame in a matching way; an O-shaped sealing ring is distributed on the oil sprayer, the air valve guide barrel and the cylinder cover respectively in a matching way; an oil return cavity is communicated with a phi5 oil return channel on the cylinder cover; and an oil leaking groove is formed between the oil charging conical surface of the oil sprayer and the oil return cavity. Due to the adoption of the embedded oil charging structure, a shorter high-pressure oil pipe is realized, the sealing requirements of fuel oil and lubricating oil can be met simultaneously, oil return of the oil sprayer is smooth, and the entire structure is easy to install.

The invention discloses a balance valve which comprises a valve body, a main valve element and a one-way valve element. The valve body is provided with a first oil port, a second oil port and a control oil port. A spring seat is arranged at the front end of the valve body. A one-way valve spring is arranged between the spring seat and the one-way valve element in an abutting manner. A valve port corresponding to the second oil port is formed in the front end of the main valve element. An annular conical face in sealing fit with the one-way valve element is arranged on the outer wall of the valve port. An oil passing hole corresponding to the first oil port is formed in the middle portion of the main valve element. The first oil port communicates with the valve port through the oil passing hole. A screw plug is arranged at the rear end of the valve body. A spring set is arranged between the rear end of the main valve element and the screw plug in an abutting manner. The position between the main valve element and the valve body is further sleeved with a guide sleeve corresponding to the control oil port. The guide sleeve and the main valve element are in axial linkage fit. A control oil cavity is formed between the guide sleeve and the valve body. The control oil port communicates with the control oil cavity. The balance valve is simple and reasonable in structure, good in overflowing effect and smooth in oil return, energy losses can be reduced easily, and the work efficiency is improved.

The present invention provides a ventilation device for an overhead valve type internal combustion engine. The internal combustion engine has a cam chain wound between the crankshaft and the camshaft and is provided with a cam chain tensioner. In the above internal combustion engine, the cam chain is not used to drive the pulley The breather is provided without offsetting the size of the cylinder block. A cam chain tensioner push rod installation support surface is formed on the outer wall of the cylinder block, and on the side of the cam chain tensioner push rod installation support surface, on the cylinder outer wall located in parallel with the above support surface, a The recessed portion which becomes a part of the breather chamber which separates the gas-liquid separation of the blow-by gas discharged from the inside of the internal combustion engine and the joint surface which attaches the cover part of the breather chamber.

The invention relates to a gearbox used for a rail transit vehicle. Center lines of an input shaft and an output shaft of the gearbox are perpendicular to each other; a middle gear shaft which is parallel to the output shaft is arranged between the input shaft and the output shaft; the input shaft is engaged with a middle bevel gear of the middle gear shaft by virtue of a spiral bevel gear; supporting points at the two ends of the output shaft are hollow shafts; an output big gear is arranged on the output shaft; the middle gear shaft is engaged with the output large gear on the output shaft; an output flange plate is positioned at the output side of the output shaft; a jointed surface of the output flange plate and the output shaft is end surface teeth which are matched with each other; and the output flange plate passes through a central connecting bolt, so that end surface teeth of the jointed surface are engaged with each other. A mounting hole which is in butt joint with the output flange plate is mounted in the central axis of the output shaft, and the central connecting bolt is assembled in the mounting hole; the input shaft is supported on an upper box body by virtue of one four-point ball bearing and two cylindrical roller bearings in a input bearing base; and the two ends of each of the middle gear shaft and the output shaft are respectively supported on a box body by virtue of a bearing in the bearing base.

The invention relates to a connection system for an air-cooled split air conditioner. Aiming at the problems that the pipeline has large resistances and the return oil blockage happens to the pipeline when the existing air conditioner has long distance and high fall, the invention provides a connection system for the air conditioner. An exhaust rising pipeline (4) of the invention is a pipeline which is uniformly upward and an oil separator (5) is arranged at the lower end of the exhaust rising pipeline (4). The exhaust inlet (5-1) of the oil separator (5) is connected with an exhaust horizontal pipeline (3) which is extended out from an indoor-machine (1) and the exhaust outlet (5-2) of the oil separator (5) is connected with the exhaust rising pipeline (4) connected to an outdoor-machine (2); the oil return pipe port (5-3) of the oil separator (5) is connected with one end of an oil return pipeline (6) while the other end of the oil return pipeline (6) is connected to the air return pipeline (1-2) of a compressor (1-1) in the indoor-machine (1). The invention has the advantages of small resistance, smooth oil return, simple system structure, easy implementation, easy installation, low cost, small investment, low running and management fees, few occupied building spaces and is beneficial for popularization and utilization.

The invention relates to a light bearing base structure capable of being applied to such fields as ground gas turbines and aircraft engines; and the structure can realize lubricating oil supply of bearing cavities, lubricating oil returning, cooling gas supply and ventilation between the bearing cavities. The light bearing base structure is provided with a discrete convex rib structure for realizing such functions as lubricating oil supply, lubricating oil returning and cooling gas supply, is provided with a kidney-shaped or shape-optimized cavity structure for realizing such functions as ventilation between the bearing cavities, and is provided with a flange mounting edge and an O-shaped ring mounting groove for realizing a function of sealing lubricating oil in the bearing cavities. The light bearing base structure can relieve the weight of an engine to the greatest extent, optimizes internal space utilization of the engine, and shortens an air way of a secondary air system of the engine; and lubricating oil supply and cold air supply in the bearing base both can realize effective control of the temperature of the lubricating oil in the bearing cavities.

The invention discloses an oil returning gas removal device and a lubricating oil system, and relates to the technical field of power devices. The oil returning gas removal device is arranged in an oil tank of the lubricating oil system and comprises a connecting part, an oil returning pipe assembly, a sleeve and a filter assembly; the connecting part is used for mounting the oil returning gas removal device in an oil returning hole in the inner wall of the oil tank, the inlet end of the oil returning pipe assembly is connected with the connecting part, the sleeve is arranged at the outlet endof the oil returning pipe assembly, the sleeve and the oil returning pipe assembly form a continuous pipeline, multiple oil passing holes are formed in the periphery of the wall of the sleeve, the filter assembly is detachably arranged on the circumferential outer side and the bottom of the sleeve, and the filter assembly is provided with a filter net with the hole diameter smaller than 0.3 mm. Oil returning turning over and bubbles generated by traditional gravity oil returning can be avoided, the filter net of the filter assembly can effectively separate bubbles with the diameter above 0.3mm in the oil returning process, the gas containing amount in lubricating oil can be effectively reduced, the lubricating effect of the lubricating oil is ensured, and cavitation noise caused by gas containing of the lubricating oil can be reduced.

The invention relates to the field of metallurgical equipment, in particular to a floating oil return mechanism in a floating decoiler. The mechanism is characterized by at least comprising a sealing box body, a box cover, an oil inlet flange, a rubber sealing gasket, an oil inlet pipe, an oil return flange and an oil return pipe, wherein the oil return pipe is connected with an oil box of a thin oil lubrication station through an intermediate piping; the sealing box body is a welding structural member and fixed on a foundation; the oil inlet flange is fixed on the upper side part of the sealing box body; the oil inlet pipe is in rigid connection with the decoiler body; the oil return flange is fixed right below the sealing box body and connected with the oil return pipe; and the oil inlet pipe floats and stretches in the sealing box body through the guide of the oil inlet flange and the sealing of the rubber sealing gasket in the presence of the drive of the floating decoiler body to ensure that lubricating oil flows in the sealing box body and then flows back to the thin oil lubrication station through the oil return pipe at the bottom of the sealing box body. The floating oil return mechanism has simple structure, guarantees smooth oil return and is completely suitable for the floating oil return working conditions of the floating decoiler.

The invention discloses a temperature control device for lubricating oil return. The temperature control device comprises a first temperature sensor, a second temperature sensor, a heater and a control system. The first temperature sensor is installed on an oil inlet pipe, and the second temperature sensor and the heater are sequentially installed on an oil return pipe. The first temperature sensor and the second temperature sensor are respectively connected with the control system. The heater is controlled by the control system. The temperature control device has the following advantages that the control system automatically adjusts the heater according to temperature data, it can be guaranteed that thin lubricating oil smoothly returns, and the lubricating characteristic of a lubricating system is improved.

The invention discloses a device for testing the input speed of an aeroengine centrifugal sensor. The device is provided with a change-over seat between an engine accessory casing and the centrifugalsensor, the change-over seat is provided with a through hole, then two ends of a counting gear shaft installed in the change-over seat are respectively connected with an input shaft of the centrifugalsensor and a driven gear shaft in the engine accessory casing, the middle of the counting gear shaft is provided with counting teeth, the side wall of the change-over seat is provided with an eddy current sensor mounting hole, a probing head of the eddy current sensor directly faces towards the counting teeth on the counting gear shaft so as to perform signal acquisition on the speed of the counting gear shaft, and the counting gear shaft is connected with the driven gear shaft and capable of coaxially rotating, so that data acquisition for the speed of the counting gear shaft is the speed ofthe driven gear shaft and the actual input speed of the centrifugal sensor. The device is simple in structure, authentic and reliable in data, does not need to modify the structure of the engine accessory casing and the centrifugal sensor, and greatly improves the detection and data accuracy of the input speed of the aeroengine centrifugal sensor.

The invention provides a siphonic water-cooling threaded rod saline water unit system and relates to the technical field of refrigerating. In the siphonic water-cooling threaded rod saline water unit system, a threaded rod compressor, an oil separator, a condenser and an economizer are sequentially connected, a first outlet b4 of the economizer is connected with a liquid inlet a5 of a gas-liquid separator through a liquid supply pipe, and an exhaust port b5 of the gas-liquid separator is connected with an air inlet b1 of the threaded rod compressor through an air suction pipe. A liquid outlet c5 of the gas-liquid separator is connected with a liquid inlet a6 of a sphonic evaporator through a descending circulating pipe, and an exhaust port b6 of the siphonic evaporator is connected with an air inlet d5 of the gas-liquid separator through an ascending circulating pipe. The system adopts the siphonic evaporator and the gas-liquid separator to form a circular refrigerating loop, the return oil temperature of the siphonic evaporator is raised through the economizer, the return oil viscosity is reduced, the siphonic evaporator returns oil more smoothly, and the unit running efficiency is improved.

The invention belongs to the field of compressor accessories, and discloses a liquid storage tank applied to a compressor. The liquid storage tank comprises a shell provided with an air inlet pipe andan air outlet pipe, and the air outlet pipe comprises an extending-in section which extends into the shell. The liquid storage tank further comprises a separator for separating out a liquid refrigerant, and a sleeve, wherein the separator is arranged between the air inlet pipe and the extending-in section, the sleeve sleeves the extending-in section, the end, away from the separator, of the sleeve is sealed, and the end, close to the separator, of the sleeve is used for receiving the liquid refrigerant which is obtained after separation by the separator. A first liquid storage space is formedbetween the sleeve and the extending-in section, and an oil return hole is formed in the pipe wall of the extending-in section and communicates with the first liquid storage space. According to the liquid storage tank applied to the compressor, flowing power of a liquid refrigerant and lubricating oil mixture can be guaranteed under the high-temperature condition with few refrigerants and the low-temperature condition with many refrigerants, the oil return amount is stable, and the requirement of a wide-environment-temperature operation heat pump system is met.

The invention discloses a cantilever type composite spindle with high hydrostatic pressure. The cantilever type composite spindle with high hydrostatic pressure comprises an outer sleeve and a spindle, wherein a front end cover and a back end cover are mounted at front and back ends of the outer sleeve respectively, bearing bushes are mounted at two ends of an inner cavity of the outer sleeve, the spindle penetrates through inner cavities of the two bearing bushes, the front and back ends of the spindle penetrate out of the front end cover and the back end cover respectively, a flange for mounting a grinding wheel is mounted at the front end of the spindle, and a belt pulley is mounted at the back end; a plurality of concave oil grooves are formed in the inner walls of the bearing bushes, small holes which are communicated with the inner cavities and have the diameter of 0.5-0.7 mm are formed in the bush walls of the bearing bushes, gaps exist between the spindle and the inner walls of the bearing bushes, and an oil inlet structure for introducing hydraulic oil into the inner cavities of the bearing bushes via the small holes is formed in the wall of the outer sleeve; the cantilever type composite spindle with high hydrostatic pressure further comprises an oil return structure for leading the hydraulic oil out of the inner cavities of the bearing bushes. The cantilever type composite spindle with high hydrostatic pressure has the advantages of high rotation precision, high rigidity, long service life and the like.