30results about How to "Wide range of technical applications" patented technology

A magnetically controlled welding method with consumable electrode features that a pair of exciting coils for upper and lower electrodes are arranged respectively above and under the workpiece to be welded, and an exciting power supply is used to provide the exciting current to said coils and generate an external vertical magnetic field for controlling and perform the welding to the workpiece protected by active gas or CO2. Its welding apparatus has exciting power supply, exciting unit and water cooling system.

The present invention discloses a Bluetooth 5-based indoor positioning and navigation method. According to the invention, the positioning of an indoor positioning device is subjected to error analysis, and a Bluetooth 5-based indoor accurate positioning and navigation method is provided. The method comprises the following steps of 1, establishing an indoor position fingerprint database, wherein the indoor position fingerprint database is mainly composed of the geographic position coordinates of a reference point, the signal strength RSSI of a signal broadcasted by a Bluetooth signal transmitting module, and the corresponding ID of the Bluetooth signal transmitting module; 2, conducting the indoor positioning and navigation by using the Bluetooth technology, broadcasting a signal by the Bluetooth signal transmitting module, receiving the signal by the positioning device, matching the received signal with the indoor position fingerprint database and obtaining the coordinates of a positioning point; 3, correcting the positioning error of the positioning device itself, obtaining a preliminary positioning track through the self-positioning of the positioning device, and correcting the track by using the coordinates of an accurate positioning point. The method is low in cost, high in precision, and low in power consumption. The method can be widely applied to the indoor accurate positioning and navigation field.

The invention relates to a device and method for magnetic control of underwater welding, in particular to a device and method for the magnetic control of the wet process underwater welding and is applicable to the technical field of welding. The problem in the existing underwater welding that globular transfer can not be transited to a base material easily is solved. The magnetic control device is formed by an excitation power supply, a magnetic conducting core, an excitation coil, a copper sleeve, an upper end cover and a lower end cover. The magnetic control method includes that 1, the magnetic control device is installed, and the excitation power supply is connected; 2, a welding wire penetrates through a through hole of the magnetic conducting core, protecting gas is exerted, and an electric arc between the welding wire and a welding workpiece is ignited, namely wet process underwater welding is finished. The device and method for the magnetic control of the wet process underwater welding is applied to the technical field of welding.

The invention discloses a GPON system for realizing rapid protection switching and a protection switching method and relates to the light access network field. The method comprises the following stepsthat an ONU negotiates with an OLT so as to add a customized PLOAM expansion message; the OLT records an EQD which normally registers the ONU; when switching is generated, an OLT PON port in a working mode detects an LOS and is switched to a standby mode, and a CPLD triggers the OLT PON port to be switched to the working mode, and broadcasts the customized PLOAM expansion message to all the ONUsunder the PON port; and the ONU detects a LOF, enters into a POPUP state from an operation state, and eliminates an LOF interruption, at this time, the ONU receives the customized PLOAM expansion message and generates an interruption, and the ONU sets the EQD of the ONU according to the EQD in the customized PLOAM expansion message sent by the OLT, sets a GPON system state machine to the operationstate, and reports the state. In the invention, PON protection switching time can be reduced to 1ms.

The invention discloses a method for producing peach fruit wine on a large scale, aiming at solving the problem that existing methods for producing peach fruit wine are high in costs and complex in processes and can not achieve large-scale production. The method comprises the following steps: selecting the peach fruit, crushing and pulping the peach fruit, adding 0.02-0.06% of pectase and 0.003-0.006% of potassium metabisulfite to the pulp and mixing the materials uniformly, carrying out normal temperature standing and enzymolysis for 24 hours, adding yeast with dose of 4-6/10000 to fermentation liquor, mixing the materials uniformly, controlling the fermentation temperature at 20-25 DEG C, separating wine lees by utilizing a plate-and-frame filter press after fermentation is completed, adding 0.04-0.08% of PVPP, filtering the fruit wine by utilizing a diatomite filter 15 days later, storing the wine base obtained after filtration in full tanks, ageing the wine base below 25 DEG C for 6-12 months, insulating the wine for 7 days at a temperature above the freezing point of the wine before filling and filtering the wine while the wine is cold. The wine base prepared by the method is in clear and transparent faint yellow, retains the strong aromas and colors of peaches, has harmonious and full body and mellow taste and is supple and tasty.

The invention discloses energy-saving light-load engine oil. The energy-saving light-load engine oil is prepared from the following ingredients in percentage by weight: 99.4-99.7% of lubricating oil and 0.3-0.6% of phosphorus-free molybdenum salt anti-friction agent. According to the energy-saving light-load engine oil, the phosphorus-free molybdenum salt anti-friction agent and the A5/B5 lubricating oil are blended, and the technical problem that products cannot meet energy-saving technical requirements of an OEM is technically solved through adding a small amount of reinforcing agent into the existing lubricating oil. The added energy-saving reinforcing agent does not violate the technical principle of small formula change and does not affect the technical features of the original formula; the added reinforcing agent is moderate in viscosity and good in solubility and can be directly blended, thereby having high operability; the amount of the added reinforcing agent is small, so that the influence on the overall cost of the product is not high; proven by simulated tests and bench tests, the effect of used technologies is obvious; and the scope of technical application is wide, and the energy-saving light-load engine oil can be popularized and applied to other light-load engine oil products with requirements on energy-saving performance.

The invention relates to a synthesis method for dynamic three-dimensional pictures, which has the beneficial effects that the synthesis method is based on the principle of vision persistence, so a user can observe a dynamic effect without wearing glasses, when the displacement between a grating and a picture changes, human eyes can see the originally static picture moving, so that a horizontal-longitudinal-stretching dynamic effect can be achieved, the user can represent the to-be-expressed contents through a dynamic form according to different design concepts to completely catch the eye of an observer, the cost is very low, the technical application range is wide, and the method can be used for advertising, so that the advertisement representing form is more novel and more irresistible, thereby being capable of attracting the attention of customers; and a grating sheet for observing the dynamic effect is designed by picture processing software, the number of grating lines and the proportion of black and white stripes can be set according to the condition of an original manuscript, a platemaking method adopts the traditional film process, the manufacturing process is simple, the cost is very low, and the technology has a very good market prospect, and can create out various novel products according to the innovative thinking of the user, so that the application range is widened, and an enterprise has a promising future.

The invention discloses a novel constant delivery pump variable differential pressure load sensitive system which comprises a load sensitive valve, a safety protection valve, a pressure compensator, afirst reversing valve and a differential pressure control valve, the oil inlet ends of the load sensitive valve, the safety protection valve and the pressure compensator are connected to an oil inlet, and the load sensitive valve is connected with a differential pressure control mechanism and the safety protection valve. The pressure compensator is connected with the first reversing valve, the differential pressure control valve comprises a damping hole, the differential pressure control mechanism and a second reversing valve, the differential pressure control mechanism is connected with thesecond reversing valve, and the damping hole is formed between the differential pressure control mechanism and the second reversing valve. The pressure difference of the load sensitive valve in the constant delivery pump load system is changed through the pressure difference control valve, flow output is related to actual requirements of the system, overflow loss of the system in a standby state is reduced through variable pressure difference, and therefore energy saving performance of the system is improved.

The invention relates to a gas engine lubricating oil composition which is formed by mixing oil soluble polyalkylene glycol base oil, a clearing agent, a dispersing agent, zinc dialkyl dithiophosphate, an antioxidant, a pour point reducer and neutral base oil in a certain proportion. The invention further relates to a preparation method of the gas engine lubricating oil composition and application of the gas engine lubricating oil composition. According to the gas engine lubricating oil composition, the phenomenon that a large amount of sediment exists in existing gas engine lubricating oil is avoided, the defects that abrasion is intensified, working temperature of lubricating oil is increased and oxidative deterioration of lubricating oil is accelerated due to the fact that a large amount of sediment exists in existing gas engine lubricating oil are overcome, and the service life of lubricating oil is prolonged.

The invention discloses a pipeline internal cooling type evaporative cooling structure suitable for a vertical motor rotor. The pipeline internal cooling type evaporative cooling structure comprises a condenser, a pole coil, a cooling pipeline, a gas collecting pipe, a liquid return pipe and a liquid distribution pipe. The cooling pipeline is embedded into a pre-processed groove of the pole coil, the cooling pipeline is filled with a liquid evaporative cooling medium, and in a static state, the liquid level of the cooling medium in the cooling pipeline is higher than the highest position of the pole, namely, the length of the cooling pipeline embedded into the pole coil is full of the cooling medium. The cooling pipelines are connected at the upper ends of the magnetic poles through gas collecting pipes, and gaseous cooling media generated in the cooling pipelines flow to the condenser through the gas collecting pipes. A liquid cooling medium generated by condensation of the condenser flows into a cooling pipeline in the pole coil from the lower end through a liquid return pipe from an outlet of the condenser, and circulation is completed.

The present invention discloses a stationary gas engine oil composition, which comprises, by mass, 3-10% of polyisobutylene, 6-16% of a compounding agent, 0.1-0.3% of a pour point depressant, and the balance of deep refining base oil, wherein the compounding agent at least comprises one or a plurality of cleaning agents, one or a plurality of dispersants, one or a plurality of antioxidants, an organic molybdenum salt wear-resistant agent, and an anti-foaming agent. According to the present invention, the polyisobutylene, the compounding agent, the pour point depressant and the base oil are used to blend into the stationary gas engine lubricating oil according to the specific ratio, the addition amount is reasonable, and the ratio selection is proper, such that the technical difficult problems that the gas engine high-temperature lubricating oil easily produce high temperature oxidation and nitration, the gas fuel provides the poor lubricating effect for the valve seat so as to easily produce wear, and the like are solved.