34results about How to "Work normally" patented technology

The invention relates to a method for detecting and positioning section faults of a power distribution network containing distributed generators, which comprises a fault judging and positioning part and a fault type recognition part. A fault judging and positioning method comprises the steps of detecting a fault and recognizing a fault phase through comparing the relation between an absolute value of the phase angle difference of each phase current of each power system section and a threshold value, finding out a section where a fault point is located, and timely removing the fault section so as to complete a protection action. A fault type recognizing method comprises the steps of comparing zero-sequence current amplitude values at two end nodes of the fault section at the fault determination moment with a set threshold value on the basis of recognizing the fault phase, and judging whether the zero-sequence current amplitudes at the two end nodes of the fault section at the fault determination moment are less than or equal to the threshold value or not, thereby determining whether the fault is a phase-to-phase fault or a grounding fault. The method provided by the invention can be applied to detecting and positioning the section faults of the power distribution network containing the distributed generators under high permeability.

A floating LNG production platform, comprising an upper module 1, a floating body 2 with a hollow structure, a fixed gravity cabin 4 fixedly connected to the lower part of the floating body 2, and a suction pile 5 fixedly connected to the fixed gravity cabin 4, and the hollow part of the floating body 2 An LNG liquid cargo tank 3 is provided, and a plurality of adjustable buoyancy chambers 21, fixed buoyancy chambers 22 and limit devices 23 are arranged on the bulkhead of the buoyant body 2, and the adjustable buoyancy chambers 21, fixed buoyancy chambers 21 and limit devices 23 They are all annular chambers and arranged concentrically; the suction pile 5 is a cylindrical structure with a closed upper end and an open lower end; the fixed gravity chamber 4 is connected with a mortar pumping pipe 25, and the fixed gravity chamber 4 is provided with an exhaust port 28 The upper module 1 includes an LNG production unit 10, an LNG unloading unit 11, and a ballast water control unit 12. The LNG production unit 10 receives the raw natural gas delivered by the subsea natural gas wellhead unit 8 through a subsea hose 7; its floating body Wet towing to the site can realize the self-righting of the floating body, which is convenient and safe for transportation and installation; the installation of the upper module does not require large-scale floating cranes; no mooring system and other equipment are required, and the structure is simplified, which reduces the cost of installation and construction. LNG production platform.

The invention belongs to the technical field of inflator pumps, and particularly relates to an efficient inflator pump. The efficient inflator pump comprises a shell, wherein a control box is installed on the front side of the shell, a compression bin and an electric appliance bin are divided inside the shell by a chamber dividing plate, a switching power supply and a brushless direct current motor are installed at the bottom of the electric appliance bin, the switching power supply is fixedly connected with a power line, a connecting rod is eccentrically installed on the side face of a rotating wheel connected to the brushless direct current motor, a piston is connected to the top end of the connecting rod, in-pipe valves are installed at the joints of an air outlet pipe and an air inletpipe connected to the side face of the compression bin as well as the compression bin correspondingly, an air outlet formed in the air outlet pipe is provided with an inflation hose, an air inlet formed in the air inlet pipe is in threaded connection with a filter cover, the control box can control the rotating speed of the brushless direct current motor to adjust the air inflation speed of the efficient inflator pump, a movable sealing ring and a piston sealing ring can improve the air tightness of the compression bin, the in-pipe valves can be opened and closed in cooperation with movement of the piston, and the piston can conduct air inflation work all the time in the reciprocating movement process, so that the air inflation efficiency of the efficient inflator pump is greatly improved.

The invention discloses assorted health-care porridge, which comprises the following components by weight: 3 to 5 grams of bee pollen, 75 to 120 grams of honey, 1 to 2 grams of propolis, 2 to 4 grams of royal jelly, 5 to 10 grams of walnut kernel, 5 to 10 grams of medlar, 5 to 10 grams of black sesame, 30 to 50 grams of black soya bean, 100 to 120 grams of mung bean, 5 to 10 grams of semen nelumbinis, 100 to 120 grams of fresh lotus root, 100 to 120 grams of dioscorea root, 2 to 5 grams of hairy antler and 2,000 to 2,600 grams of purified water. A preparation process comprises the following steps of: cleaning walnut kernel, medlar, black sesame, black soya bean, mung bean, semen nelumbinis, fresh lotus root, dioscorea root and hairy antler, drying, and slicing fresh lotus root, dioscorea root and hairy antler; and putting walnut kernel, medlar, black sesame, black soya bean, mung bean, semen nelumbinis, fresh lotus root, dioscorea root and hairy antler into a pressure cooker, cooking over slow fire until the mixture is boiled, maintaining for 5 to 10 minutes, cooling, adding honey, propolis, royal jelly and bee pollen, and stirring uniformly.

The invention provides a software upgrading method and device for terminal equipment and an electronic system, and the method comprises the steps: firstly judging whether data recovery needs to be carried out or not after upgrading if an upgrading command is received; if data recovery needs to be carried out, backing up preset data needing to be recovered through a preset storage module; and finally, executing a corresponding upgrading operation according to the upgrading instruction. In this manner, if upgrading is needed, whether data recovery is needed or not after upgrading is judged; upgrading mode can be flexibly selected, the upgrade complexity is reduced, if data recovery is needed, data is backed up in a preset storage module, the upgrading operation is carried out without carrying out the operation of parameter issuing of the secondary master station after each upgrading is completed, so that the upgrading operation is simplified, the upgrading cost is reduced, the probability of mistakes and omissions during secondary parameter issuing is also reduced, the upgrading stability is improved, and the normal operation work is ensured.

The invention discloses a rotating speed sensor, comprising a housing (1); a segment of external threads (11) are arranged on the outside of a left end of the housing (1); a left stepped hole (2), a middle stepped hole (3) and a right stepped hole (4) are axially arranged in the housing (1); an epoxy resin sleeve (21) is embedded in the left stepped hole (2); the epoxy resin sleeve (21) is internally provided with a Hall element (22) and a neodymium boron iron magnetic steel (23); the middle stepped hole (3) is internally provided with a printed circuit board combination (31), a sleeve (32) and a mounting sleeve (33); the right stepped hole (4) is also internally provided with an aviation plug (41). The rotating speed sensor is provided with the external threads, and the housing is internally provided with the epoxy resin sleeve, allowing a relevant circuit board to be arranged in a relatively sealed space; the housing is prepared by stainless steel materials, and possesses the functions of dust prevention and corrosion protection; the rotating speed sensor has a reasonable and compact structure, is convenient to assemble and disassemble, and can prolong the service life of a product.

The invention discloses a drying system with a heat recovery function. The drying system comprises a drying room body, an outdoor machine and an indoor machine. The interior of the drying room body isat least provided with one indoor fan for accelerating air flow in the drying room body, the top of the drying room body is at least provided with one heat recoverer, an exhaust channel and an air inflow channel which are independent are formed in each heat recoverer, and the exhaust channels and the air inflow channels communicate with the interior of the drying room body. High-temperature wet air and low-humidity dry air can do heat exchange at the positions of the heat recoverers, at the moment, heat of the high-temperature wet air is mostly transmitted to the low-temperature dry air, thedry air is heated, heat losses caused by emission of the wet air can be reduced, social energy is saved, the situation that when fresh dry air is supplemented into the drying room body, the temperature change in the drying room body is too large can be avoided, and therefore the drying system can normally run to work.

The invention relates to the technical field of circuit board testing, in particular to a flexible circuit board touch screen substrate testing device. The device comprises an operation table, and a fixing structure is arranged on the top side of the operation table; a reset structure is connected between the fixing structure and the operation table; an observation structure is arranged on the inner side of the operation table; an amplification structure is mounted on the top side of the operation table; and a contact structure is mounted on one side of the operation table. A flat cable is pressed and flattened on the table top through the fixing structure, so that testing personnel can conveniently conduct testing. The pressed and fixed state of the flat cable can be kept through the reset structure, and meanwhile, an anti-skid pressing wheel can be rapidly lifted up to take out the flat cable. The bottom side of the to-be-tested flat cable is observed in real time through the observation structure, and a tester can conveniently obtain more comprehensive circuit information. The surface of the flat cable with fine and dense circuit distribution is observed through the amplification structure, and a specific point at one end of the flat cable is continuously connected through the contact structure, so that the test work is further facilitated.

The invention discloses a new capacitor which comprises a body and pins, wherein the body comprises a housing and an inner core, the housing is a cylindrical body which has an opening in the lower endand is made of metal, an identification cover paste is pasted to the surface of the housing, the inner core is arranged in the cylinder of the housing, an insulation erosion resistant coating is arranged between the housing and the inner core, a rubber end cover is arranged at the lower end of the inner core, a protection cover is arranged at the lower end of the rubber end cover, the pins include a first pin and a second pin, and the length of the first pin is larger than that of the second pin. According to the new capacitor, a positive pole pin and a negative pole pin of the capacitor canbe identified by watching the length of the pins through naked eyes, and the type and the performance parameters of the capacitor can be known by checking the identification cover paste pasted to thesurface of the housing of the capacitor.

The invention discloses an agricultural photovoltaic system Including a mount seat, A support column is arranged at the top of the mounting seat, the supporting column is hollow, A support column is internally provided with a fixing block, a lifting column is arranged at the top of the support column, the lifting column is inserted with the supporting column, a hydraulic lifting rod is arranged between the lifting column and the fixing block, and a telescopic device is arranged at the top of the lifting column, and the telescopic device comprises a telescopic shell, a fixing plate, a sliding baffle, an electric pushing rod and a water blocking slot. The lifting column and the telescoping device are arranged, Hydraulic lifting lever operate to push the lifting column up and down, so that the height of the solar photovoltaic panel can be changed, At the same time, the electric push rod push the sliding baffle to move by the top to block the solar photovoltaic panel to protect the solar photovoltaic panel, so as to avoid damage to the solar photovoltaic panel due to the weather, and ensure the service life of the equipment.

The invention relates to the technical field of rock mining, and discloses a rock splitting machine capable of improving the mining efficiency. The machine comprises a main body, the upper end of the main body is fixedly connected with a hydraulic connector, the upper end of the hydraulic connector is fixedly connected with a hydraulic oil pipe, and the main body is internally provided with a hydraulic oil cavity. A plurality of upper limiting cavities formed in the main body are formed in the upper portion of the hydraulic oil cavity, and a plurality of lower limiting cavities formed in the main body are formed in the bottom of the hydraulic oil cavity. Through a telescopic rod, a return spring and each telescopic tube, when the splitting machine works, the hydraulic oil extrudes a convex block to extrude and crack rocks, the convex block is expanded, the hydraulic oil enters the telescopic rod through a communicating pipe, so that the telescopic rod overcomes the tension of the return spring under the supporting action of the hydraulic oil to drive the telescopic tubes to extend towards the two sides and abut against the two sides of a crack so as to play a fixing support role for the main body, when the rock crack is large, the splitting machine can be prevented from falling into the crack, and the splitting machine can be protected.

The invention discloses an oil-gas mixture transport pump, which comprises a pump body and a liquid collection device. The pump body includes a pump shell, and a pump cavity for accommodating a threaded rod in the pump shell. The middle section of the pump cavity is provided with an oil outlet running through the pump body. The pump shell is also internally provided with an oil inlet cavity, the two ends of which are communicated with the two ends of the pump cavity. The oil inlet cavity is provided with an oil inlet running through the pump body. The liquid collection device comprises a cylindrical liquid collection tank, an input pipe, and a liquid output device. The bottom of the liquid collection tank is connected to the liquid output device, and the pipe wall of the liquid collection tank is provided with an input port. The input pipe stretches into the input port and goes into the inside of the liquid collection tank. The pipe orifice of the input pipe is closely attached to the inner wall of the liquid collection tank. The pipe orifice center axis tilts downward and is tangent to the pipe orifice at the inner wall of the liquid collection tank. The oil-gas mixture transport pump provided in the invention performs gas-liquid separation of natural gas, sends liquid natural gas back to the peripheral space of the pump cavity, and realizes the gas-in-liquid state.

The invention relates to an electrical cabinet and a control circuit for a cabinet door intelligent lock and a protective door intelligent lock of the electrical cabinet. The control circuit comprisesa power supply, a cabinet door branch circuit, a first protective door branch circuit and a second protective door branch circuit; a cabinet door switch, a primary side of an induction coil and a cabinet door lock body for locking a cabinet door are arranged on the cabinet door branch circuit in series; a cabinet door microswitch, a protective door microswitch and a protective door lock body forlocking a protective door are arranged on the first protective door branch circuit in series; and the second protective door branch circuit is connected with the protective door lock body in parallel,a secondary side of the induction coil and a linkage switch are arranged on the second protective door branch circuit in series, and the linkage switch is in linkage with the protective door microswitch and is opposite to the protective door microswitch in linkage state. On one hand, the protective door can be opened only after the cabinet door is opened, so that the electrical cabinet can normally operate and work; and on the other hand, the cabinet door can be closed only after the protective door is closed, misoperation is prevented from occurring when the protective door is closed, and the safety coefficient is high.

The invention discloses a water level and water quality measurement system based on a 2G network, which comprises a floating box, a measurement control system and electronic communication equipment, wherein the measurement control system includes a water PH-value sensor, a dissolved oxygen sensor, a water pressure sensor, a wind pressure sensor, a humidity sensor, an atmospheric pressure sensor, aremote short message control terminal and a data storage module, the inner bottom of the floating box is provided with a buoyancy compartment, the top of the buoyancy compartment is provided with anelectrical room through a bearing plate, the top of the electrical room is provided with an equipment box through a connecting frame, the remote short message control terminal is installed at one sideinside the equipment box through bolts, and the atmospheric pressure sensor is installed at the other side inside the equipment box. The water level and water quality measurement system is applicableto aquaculture, flood control or agricultural work, and can perform signal transmission of the 2G network by using the remote short message control terminal when being used in remote areas with weaksignals by using the remote short message control terminal, so that the whole water level and water quality measurement system is enabled to operate and work normally.