70results about How to "Extended overhaul cycle" patented technology

The invention discloses a PVD chromium base ceramic composite coating piston ring and a preparation method thereof, and the piston ring is manufactured by plating a chromium base ceramic composite coating on a basal body of the piston ring which is treated by nitriding by adopting high power electric arc discharge method; the chromium base ceramic composite coating is composed of a bonding layer, a main wearing layer and an anti-attrition layer, wherein, the bonding layer is binded with the basal body of the piston ring in a metallurgical way, the main wearing layer is arranged on the bonding layer, and the anti-attrition layer is positioned on the surface of the main wearing layer; the bonding layer is Cr, the main wearing layer is a Cr/CrN multilayer coating formed by the Cr and the CrN which are alternately arranged, and the anti-attrition layer is a Cr/Cr2O3 multilayer coating formed by the Cr and the Cr2O3 that are alternately arranged. The coating structure has reasonable design, and the manufactured coating has good cementing property, high hardness and good lubricating property. Furthermore, the method used for manufacturing the piston ring has no pollution in the preparation process, and overcomes the serious problem of environmental pollution of the conventional electrodeposited chromium; as the manufactured coating has better abrasion resistant and corrosion resistant performance compared with the electrodeposited chromium, the service life of the piston ring is greatly prolonged.

The invention relates to a high-temperature preventive coating process which is characterized by comprising the process flows of: preparing a caking agent, preparing slurry, spraying, solidifying and heating in a vacuum furnace, wherein the caking agent comprises the following ingredients in mass ratio: 700 to 900g of water, 60 to 90g of chromium trioxide, 70 to 90g of magnesium oxide and 270 to 400g of phosphoric acid; a preparation process of the caking agent comprises the following steps of: adding the phosphoric acid in water, adding the magnesium oxide and fully dissolving, and adding the chromium trioxide, wherein the step of adding the magnesium oxide and fully dissolving adopts a principle of adding in small amount and a plurality of times, that is to say, adding in small amount and then adding again after the solution become clear. The invention changes the traditional process flow, improves the coating performance, can be applied to components and parts that work for a long time in severe environment, and is particularly suitable for a gas turbine.

The invention belongs to the field of metal materials, and relates to the selecting of the materials of a mushroom head and a mushroom headgear of a bottom hinge of a ship lock gate and the improvement for processing technology. The material of the mushroom head for the bottom hinge of the ship lock gate is 40 chromium or 4 chromium 13, and the material of the mushroom headgear which is engaged with the mushroom head is 38 CrMoAlA or QT 600-3. The mushroom head uses 40 Cr and 4Cr13 materials, whose hardness value is 45, the mushroom headgear uses 38CrMoAlA materials, whose hardness value is 900, and the hardness value of the QT 600-3 materials is 600. The invention provides the machining process of the above materials, the materials of the mushroom head and the mushroom headgear and the surfaces use a reasonable treatment process, and the hardness value of the materials of the mushroom head and the mushroom headgear which are engaged are reasonably collocated, thereby greatly improving the wear resistance of friction pair and playing a key role to guarantee the safe operation of a ship lock and prolong the repair cycle of the ship lock, and the economic benefits is remarkable.

The invention relates to a dynamic and static pressure ball socket bearing structure for a high speed gear shaper. The structure comprises a ball rod (1), a ball socket (2) and a shell (3), wherein the lower end of the shell (3) is connected with a cutter spindle; a ball main body (6) at the lower end of the ball rod (1) is positioned in the ball socket (2); the ball socket (2) is arranged in an installation seat of the shell (3) and is positioned and subjected to gap adjustment along the axial direction of the ball rod (1) through a pressing ring (4); and the upper end of the ball rod (1) stretches out of the pressing ring (4) and is connected with a crank. The structure is characterized in that: an oil injection hole (7) is formed in the center of the ball rod (1) and reaches the ball center of the ball main body (6); the ball main body (6) is provided with a throttler (5) along the radial direction; and the oil inlet end of the throttler (5) is communicated with the oil injection hole (7) which reaches the ball center, and the oil outlet end of the throttler (5) is communicated with an annular shallow cavity on the surface of the ball main body (6), so that the shallow cavity generates dynamic pressure bearing force and static pressure bearing force due to a step effect to bear upper and lower axial forces from a gear shaping spindle when the ball main body (6) moves. The structure is simple and has a good lubricating effect and long service life.

The invention relates to a biodegradable lubricating oil. The biodegradable lubricating oil is composed of base oil, an antioxidant, a corrosion inhibitor, an antifoaming agent, a metal deactivator, a demulsifier, an anti-wear agent and copper oxide powder, wherein the base oil is composed of synthetic base oil poly(alpha-olefin), synthetic base oil synthetic fat and synthetic base oil polyether; the antioxidant is anyone or a mixture of diarylamine and sterically hindered phenol, wherein the weight ratio of diarylamine to sterically hindered phenol in the mixture is 1:1; the corrosion inhibitor is a salt formed through using fatty acid and amine; the antifoaming agent is polydimethylsiloxane; the metal deactivator is a toluyltriazole derivative; the demulsifier is polyalkoxyphenol; the anti-wear agent is sulfurated triphenyl phosphate; and the copper oxide powder is nanometer powder, and the particle granularity of the powder is 25-35nm. The biodegradable lubricating oil has the advantages of simple preparation method, scientific and environmentally-friendly preparation scheme, degradability, high work temperature range, good lubricating characteristic, long service life, good protection to parts, high comprehensive performances, reasonable cost, realization of above 90% biodegradation of waste oil, extremely low gas discharge, and obvious energy saving effect.

A fluid high-intensity magnetic integrated filter relates to the field of fluid filters, comprises all fluid filters that filter ferromagnetic substances, and is characterized in that: a screwed covering plate is sealedly disposed on a housing of the filter; a fluid inlet and a fluid outlet are disposed on the screwed covering plate; a filter core is disposed inside the housing; the filter core comprises a filter central tube, a filter core upper end cover and a filter core lower end cover; a V-shaped magnet fixing device is fixedly disposed between a filter core end surface and the filter core upper end cover; a magnet fixing pit is disposed in the middle of the V-shaped magnet fixing device; a magnet is disposed in the magnet fixing pit; a support spring is disposed between the filter core bottom and the filter housing; with the spring, the filter core is sealedly connected with the screwed covering plate; and the main body of the filter core separates the fluid inlet from the fluid outlet. The fluid filter designed with the above scheme effectively filters ferromagnetic substances in fluid, prevents equipment wearing, prolongs service life of the equipment, enables fluid magnetization, and improves fluid use value.

The invention aims to provide a stirring shaft of an energy-saving banburymixer, which can make the uniformity of mixing molecules higher, shorten mixing period and improve production efficiency. The stirring shaft is provided with two rotors which have a meshing type prism structure in synchronous opposite rotation; and the aim of mixing is achieved by linear speed difference. The stirring shaft comprises two parallel rotors which are driven by a power unit to rotate relatively; the cylindrical surfaces of the two rotors are all provided with spiral ribs, and the cylindrical surfaces of the two rotors at two ends are all provided with lug bosses; and when the two rotors rotate relatively, the lug bosses and the spiral ribs on one rotor extend into clearances between the spiral ribs and the lug bosses on the other rotor in turn.

The invention relates to a wear-resistant additive for lubricating oil. The additive comprises the following components in parts by mass: 1-5 parts of nano calcium carbonate, 2-4 parts of nano boron nitride, 3-6 parts of nano molybdenum disulfide, 2-8 parts of expanded graphite, 3-6 parts of nano cerium borate, 1-5 parts of nano zirconium oxide, 2-8 parts of nano aluminum oxide, 1-6 parts of nanotitanium dioxide, 1-8 parts of nano silicon dioxide, 3-5 parts of N,N'-di-sec-butyl-p-phenylenediamine, 4-6 parts of di-tert-butyl-p-cresol, 2-5 parts of polyvinyl alcohol, 2-8 parts of methyl acrylate, 1-5 parts of pentaerythritol, and 2-8 parts of nano zinc oxide. The ceramic-like layer formed by the additive for the lubricating oil provided by the invention has ultra-high hardness and super wear resistance, and the overhaul period of an engine is prolonged; and the additive has the advantages of having good lubricating performance, saving oil, reducing jitter, reducing engine noise, promoting power, alleviating or thoroughly treating the phenomenon of burning engine oil, and reducing harmful gases in tail gases.

The invention is a no-arc switching circuit of switching device and its method, including a primary contactor and a current commutating circuit, and its characteristic: in the current commutating circuit, a switch is connected in serial with a pair of reverse-parallel thyristors, sampling resistance, a PTC thermal sensitive resistance group and then connected in parallel with the primary contactor, and a voltage clamper is also connected in parallel with the primary contactor; the other voltage clamper is connected in parallel with the serial reverse-parallel thyristor pair and sampling resistance ; because of the protection of the voltage clampers, especially as switching overload or short-circuit current, assuring the thyristors normally working, thus effectively eliminating or inhibiting electric arc, protecting the contactor against melting or burning and assuring the switching reliability of the switching device.

The present invention relates to a generalized boiler combustion overall optimization and energy-saving composite control system, including a combustion optimization control system, a boiler and a fuel improvement and addition system, the combustion optimization control system and the boiler are connected through a boiler interface module, and the fuel improvement and addition system It is connected with a combustion optimization control system through a signal line, and the fuel improvement adding system is connected with a boiler through a transmission line, and a control system, a data acquisition system and an air preheating device are arranged in the boiler. The invention solves the problem of how to maximize the combustion efficiency of the boiler under the existing conditions - the fully automatic combustion optimization technology can increase the thermal efficiency of the boiler by 2-5%, and significantly reduce the amount of fly ash and the carbon content of the fly ash, and the thermal efficiency of the limited site Can be higher than 5%.

The invention relates to a graphene lubricating oil additive. The graphene lubricating oil additive comprises, by mass, 5-20 parts of a graphene oxide suspension, 1-5 parts of nanometer calcium carbonate, 2-4 parts of nanometer boron nitride, 3-6 parts of nanometer molybdenum disulfide, 2-8 parts of expanded graphite, 1-5 parts of nano-zirconia, 2-8 parts of nano-aluminua, 1-6 parts of nanometer titanium dioxide, 1-8 parts of nano-silica, 3-5 parts of N,N'-di-sec-butyl-p-phenylenediamine, 4-6 parts of di-tert-butyl-p-cresol, 2-5 parts of polyvinyl alcohol, 2-8 parts of methyl acrylate, 1-5 parts of pentaerythritol and 2-8 parts of nanometer zinc oxide. A ceramic-like layer formed by the lubricant additive has the advantage of ultrahigh hardness, super wear resistance, prolongation of the overhaul life of an engine, good lubricating performance, fuel saving, vibration reduction, engine noise reduction, power increase, reduction or eradication of the burning oil phenomenon and reductionof harmful gases in tail gas.

The invention relates to a water tap device for an oil rig. The water tap device comprises a motor device, a gooseneck tube device, a packing device, a center tube and a casing, wherein the lower end of the gooseneck tube device is connected with the upper end of the packing device; the lower end of the packing device is connected with the center tube; the upper part of the center tube is connected with the motor device; the middle of the center tube is arranged in the casing; and a sliding bearing connected with the center tube is also arranged in the casing. A main load is born by the sliding bearing comprising a thrust disc and a thrust pad; the bearing capacity of the sliding bearing is strong; the service life of the sliding bearing is prolonged by multiple times compared with that of a thrust tapered roller bearing; the overhaul cycle of the water tap device is prolonged; the safe reliability of the water tap device is enhanced; and the operation performance of the oil rig is improved.

The invention discloses degradable lubricating oil. The degradable lubricating oil comprises base oil, an anti-oxidant, a rusting inhibitor, an anti-foaming agent, a metal deactivator, a demulsification agent, an antiwear agent, a cleaning agent, a viscosity index improver, copper oxide powder and magnesium metal powder. The anti-oxidant is a mixture of diarylamine and zinc dialkyl dithiophosphate. The rusting inhibitor is ethoxyphenol. The anti-foaming agent is an alkyl methacrylate copolymer. The metal deactivator is benzotriazole. The demulsification agent is polyalkoxypolyol. The antiwear agent is dialkyl dithiophosphate. The cleaning agent is sulfurized calcium alkyl phenolate. The viscosity index improver is poly(alkyl methacrylate). The degradable lubricating oil is prepared by a simple method, has high quality, a long use period and improved extreme pressure resistance, can be degraded biologically and completely exceeds environmental protection requirements on the same type of products.

The invention discloses an active safety production risk assessment device and method. The active safety production risk assessment device comprises a data acquisition unit, a data storage unit, a data analysis unit, and a data output unit; the data acquisition unit is used to collect personnel real-time location information, real-time image information, equipment health real-time information andpersonnel health real-time information, and send to the data analysis unit; the data storage unit stores safety management data information and assessment rule information, and sends the safety management data information and assessment rule information to the data analysis unit; the data analysis unit analyses and obtains the safety production information and sends to the data output unit; and the data output unit is used to output the safety production information. The active safety production risk assessment device improves the management level of the safety production risk assessment to anew height. By means of the active safety production risk assessment device, the casualty accident is reduced by more than 95%, the cost of equipment operation and maintenance is reduced by 30%, the overhaul cycle of the mainframe is lengthened, the physical and mental health assessment level is improved, and the energy consumption index and environmental emission index of the equipment can be greatly reduced.

The invention discloses biodegradable wear-resistant lubricating oil. The biodegradable wear-resistant lubricating oil comprises base oil, an anti-oxidant, a rusting inhibitor, an anti-foaming agent, a metal deactivator, a demulsification agent, an antiwear agent, a cleaning agent, a viscosity index improver, copper oxide powder and magnesium metal powder. The anti-oxidant is a mixture of sterically hindered phenol and acrylate. The rusting inhibitor is an imidazoline derivative. The anti-foaming agent is a dimethyl siloxane polymer. The metal deactivator is benzotriazole. The demulsification agent is polyalkoxypolyamine. The antiwear agent is a metal dialkyldithiocarbamate. The cleaning agent is a phenolate. The viscosity index improver is polyalkylmethacrylate. The biodegradable wear-resistant lubricating oil is prepared by a simple method, has high quality, a long use period, improved extreme pressure resistance, and completely improved oxidation resistance, corrosion resistance and foaming resistance, can be degraded biologically and completely exceeds environmental protection requirements on the same type of products.

The invention discloses a bearing pedestal oil cavity cleaning system which comprises a bearing pedestal, an oil supplying system, an oil return pipeline, an oil storing device, an electronic monitoring device and an oil pipe. The bearing pedestal comprises an oil inlet hole way, a threaded hole connected with the oil inlet hole way and provided with a lubricating connector, an oil outlet hole way, and an oil outlet threaded hole connected with the oil outlet hole way. A pipe connector is installed at the oil outlet threaded hole. The oil supply system provides a lubricating agent in the oil storing device for the bearing pedestal. The oil return pipeline recovers lubricating oil output by the pipe connector at the oil outlet threaded hole and conveys the lubricating oil to the oil storing device. The electronic monitoring device is used for monitoring the working state of the oil supply pipeline. The invention further provides a cleaning and lubricating method of a bearing pedestal oil cavity. Automation operation of cleaning and lubricating of the bearing pedestal oil cavity is achieved. In addition, the invention provides a mineral engineering machine and an engineering machine adopting the bearing pedestal oil cavity cleaning and lubricating system or method.

The invention aims to provide a fluid motor of a single-screw fluid power generator. The fluid motor is characterized by converting the energy of motion of the fluid to mechanical energy by a single-screw expansion structure and converting the mechanical energy to electric energy through motions of stators and rotors, wherein the fluid is one or a mixture of liquid, gas, supercritical fluid and plasma. The invention also aims to provide a method for converting the energy of motion of the fluid to electric energy. The method is characterized by converting the energy of motion of the fluid to mechanical energy by a single-screw expansion structure and converting the mechanical energy to electric energy through motions of stators and rotors. The generator and method are especially suitable for small-sized power generating equipment, can generate power of 1w-3000kw, preferably 50-3000kw, is suitable for generating power by utilizing the low-grade heat energy of solar energy, waste heat, excess pressure and terrestrial heat and is suitable for generating power by sampling low-temperature organic working media, especially by organic Rankine cycle.