39results about How to "Avoid damage to equipment" patented technology

The invention discloses a photovoltaic grid-connected inverter, which comprises a direct current (DC) signal detection module, an inversion module, a transformer, an alternating current (AC) contactor, an AC signal detection module and a control circuit, wherein the control circuit comprises a current loop PI regulator consisting of a d-axis current regulator and a q-axis current regulator, a space vector pulse width modulation (SVPWM) space vector module, a Clark/Park conversion module, a Clark/Park inverse transform module and an excitation command operating module; and the excitation command operating module can output an output quantity serving as a reference signal of the q-axis current regulator and control the inversion module to output a reactive component to pre-excite the transformer. The invention also discloses a grid-connected control method for the photovoltaic grid-connected inverter. Compared with the prior art, the invention has the advantages that: an inverter can be connected to a grid seamlessly, overcurrent impact is prevented, the system loss is reduced, and the reliability and stability of the system are improved.

The invention relates to a novel hydraulic rotation mechanism of a segment erector. The novel hydraulic rotation mechanism comprises a filter, a plunger pump, a check valve, an electric-hydraulic proportional direction valve, an overflow valve, a first pressure reduction valve, a second pressure reduction valve, a pressure gauge, a pressure sensor, a shuttle valve, a balance valve, a three-position ball valve, a two-way overflow valve, an energy accumulator, two hydraulic motors, a brake and a rotary encoder. A balance control module of the hydraulic motors is composed of the balance valve and the two-way overflow valve, and two-way safety protection can be provided; the pressure compensation type electric-hydraulic proportional direction valve with loads is selected for use, and precision and stability of the splicing position are ensured; the hydraulic motors with mechanical braking are adopted, and reliability of rotation movement is ensured; and the hydraulic impact generated in the start, stop and reversing processes of the segment erector is eliminated, the device damage situation such as the situation that the novel hydraulic rotation mechanism gets stuck is effectively prevented in the movement process, and the operation efficiency is improved.

The invention discloses an integrated ultra-silence water supply device which comprises an integrated housing, a constant-current compensator arranged in the integrated housing, a water inlet pipe which penetrates through the integrated housing and is connected with the constant-current compensator, silent inner pipe pumps arranged in the constant-current compensator, water supply branch pipes which are connected with the silent inner pipe pumps and extend outside the constant-current compensator, a water outlet pipe which is communicated with the water supply branch pipes and extends outside the integrated housing, a vacuum suppressor arranged on the constant-current compensator, digital display pressure gauges arranged on the water inlet pipe and the water outlet pipe, and a control system connected with the silent inner pipe pumps and the digital display pressure gauges. The ultra-silence water supply device is in an integrated structure; the silent inner pipe pumps are arranged in the constant-current compensator, so that the noise of the water pumps and an overall occupied space of equipment are reduced on the basis of ensuring the water supply capacity effectively; and a difference between the water inlet pressure and the water outlet setting pressure of the equipment is compensated, so that the normal secondary water supply pressure is ensured, and an effective guarantee is provided for high-rise water utilization.

The invention relates to a recyclable SF6 gas discharging device which comprises a gas recycling bottle, a high-pressure gas pump communicated with the gas recycling bottle through a first high-density plastic pipe, and a gas flow control valve communicated with the high-pressure gas pump through a second high-density plastic pipe. The recyclable SF6 gas discharging device is convenient to carry and easy to operate; the working efficiency is greatly improved; the human safety is guaranteed; the environment pollution is avoided; the signal transmission precision is guaranteed, and the working efficiency is effectively improved; discharged SF6 gas can be recycled; the SF6 gas is prevented from being directly discharged and harming the human safety; the atmospheric environment is protected; and the green and environmentally-friendly overhaul is realized.

The invention discloses a ratchet wheel type oxygen lance slag scraper which can improve a slag scraping effect and prolong service life. The ratchet wheel type oxygen lance slag scarper comprises two symmetrically arranged cylinders, two symmetrically arranged bearing block groups, two symmetrically arranged slag scraping ratchet wheel groups, wherein the cylinders are hinged to a cylinder support, a connecting shaft is arranged in each of the two bearing block groups, each slag scraper ratchet wheel group at least comprises two slag scraper ratchet wheels, and a pin shaft is in clearance fit with the slag scraping ratchet wheels. The ratchet wheel type oxygen lance slag scraper has the advantages that multiple slag scraper ratchet wheels are arranged, so that multiple force bearing points are formed on steel slag on the outer wall of an oxygen lance, and therefore the steel slag can be crushed very well, the slag scraping effect is improved; in addition, since the slag scraper ratchet wheels can rotate, the slag scraper ratchet wheels rotate when too much steel slag is adhered, fracture of a steel wire rope or damage of equipment can be avoided, and service lives of related equipment such as the ratchet wheel type oxygen lance slag scraper and the oxygen lance are prolonged.

The invention discloses a multifunctional test bench for a chip. The multifunctional test bench comprises a test bench and an extrusion plate, wherein a groove is formed in the middle of the upper surface of the top of the test bench; a detection plate is arranged in the groove; an insertion rod is arranged in the middle of the bottom surface of the test bench; a connection ring is arranged at thebottom end of the insertion rod; a connection block is mounted in the middle of the bottom surface of the extrusion plate; and limiting plates are arranged at positions, close to two sides, in the extrusion plate; and a detector is mounted on the rear surface of the extrusion plate. According to the multifunctional test bench for the chip, the chip can be limited through the limiting plates, so that the chip is prevented from being cracked by the extrusion plate due to a mechanical error; through springs and the insertion rod, the chip can be separated and taken out from the test bench; and the whole test bench is simple in structure, relatively practical and suitable for popularization.

An energy isolation system of an oil field united station comprises an energy isolation device and a to-be-isolated electromechanical device, wherein a first locking device is arranged on the energy isolation device and can move between a locking position and an unlocking position, and the energy isolation device blocks or isolates energy released by the to-be-isolated electromechanical device when the first locking device is located in the locking position; at least one second locking device is also arranged on the energy isolation device and can keep the first locking device in the locking position. The at least one independent second locking device is additionally arranged outside the energy isolation device and limits the unlocking moving method of the first locking device to prevent the first locking device from moving into the unlocking position, the risk of accidental release of energy caused by misoperation can be effectively prevented, and the accidental release of hazardous energy can be effectively controlled.

The invention discloses a miniature multifunctional component. The miniature multifunctional component mainly includes a connecting head, a functional device and a wiring joint. The connecting head, the functional device and the wiring joint are connected in series through the inner shaft, or the functional device is embedded between the connecting head and the wiring joint to form an integral body. The functional device includes a functional module and a casing; the casing is provided with a ground wire outlet hole. By embedding a surge protection device, a digital encryption system, etc. on the miniature multifunctional components, the invention can prevent the electronic equipment from being damaged due to the impact of electric surges, and at the same time, the miniature multifunctional components have the advantages of low manufacturing cost and volume. Small, easy to use, widely practical and safe and reliable.

The invention relates to a glass processing device combining a water knife and a processing center, and belongs to the technical field of glass processing auxiliary equipment. The glass processing device comprises a machine frame arranged in the horizontal direction, a material conveying frame arranged above the machine frame and used for conveying glass, an X-axis bending cross beam assembly arranged above the material conveying frame and perpendicular to the machine frame in the horizontal direction, a blanking sand blocking device arranged below the machine frame, a supplying and collectingdevice used for supplying water and collecting waste materials and waste water, a rotary material conveying frame, a Z-axis processing assembly slidably connected with the X-axis bending cross beam assembly and used for processing, a pressing device used for pressing the glass, and a washing device used for washing the processed glass. The glass processing device combining the water knife and theprocessing center inherits the advantages of machining with the machining center and machining with the water knife, has various functions, the water knife is used for rough machining, the machiningcenter used for finish machining, the machining efficiency is obviously improved compared with traditional machining equipment, the yield is high, and meanwhile, the pollution and the damage to the device caused by splashed water knife sand caused by machining with the water knife are avoided.

The invention discloses a recoverable anchor rod. The recoverable anchor rod comprises a cement soil pile body and an anchor cable. The anchor cable comprises branch anchor cables. Each branch anchorcable comprises a glass fiber anchor bar, screw-thread steel and a steel strand, wherein the glass fiber anchor bar, the screw-thread steel and the steel strand are sequentially connected, one end ofthe glass fiber anchor bar is connected to one end of the screw-thread steel through a sleeve, and the other end of the screw-thread steel is connected to one end of the steel strand through a wire rod connector. The sleeves are filled with a hot melting material, so that the glass fiber anchor bars and the screw-thread steel are pasted into the sleeves correspondingly. First electric heating pieces are buried into the hot melting materials and used for melting the hot melting material between the glass fiber anchor bars and the sleeves. Anchoring plates are connected to the anchor cable, theanchoring plates are provided with center holes and anchor cable holes around the center holes, and the anchoring plates sleeve the glass fiber anchor bars through the anchor cable holes. The anchoring plates are made of a non-metallic material. The invention further provides a construction method of the recoverable anchor rod. The number of metal parts left underground can be reduced, so that theinfluence on following construction is lowered.

The invention discloses a force field fitting method of an aluminum electrolysis molten salt system based on force matching. First-principle molecular dynamics simulation is conducted on the molten salt system; a stress matrix and a position matrix of ions in each frame of motion track are obtained; the position coordinates of the ions in the whole system are extracted after expansion; a distancematrix between the ions is calculated; Coulomb force borne by any ion is calculated and decomposed to obtain non-Coulomb force; a Buckingham potential function is used for distance derivation to obtain an approximate function of the non-Coulomb force; fitting is conducted to obtain potential parameters suitable for molecular dynamics simulation of the aluminum electrolysis molten salt system; according to the constructed potential parameters, molecular dynamics simulation is carried out on the molten salt system, and the ion structure and transport properties of the molten salt system are calculated. Based on the method, the potential parameters suitable for molecular dynamics simulation of the molten salt system are constructed, the defect of lack of the potential parameters is overcome,and a technical support is provided for researching the ion structure and transport properties of the molten salt system.

The invention discloses a buffer structure for lifting strength training equipment, an anti-falling pulling mechanism comprises positioning rollers, pull ropes and spring long plates, the inner side walls of the left and right ends of a portal frame are rotatably connected with positioning roller mechanisms, the outer surfaces of one ends of the positioning rollers are slidably connected with the pull ropes, and one ends of the pull ropes are fixedly connected with the spring long plates. The left end and the right end of the spring long plate are slidably connected with power positioning rods, the lower end of each power positioning rod is fixedly connected with a groove shell, and when equipment is used after debugging is completed, the spring long plate is driven by pulling the pull rope to slide upwards on the outer surfaces of the power positioning rods, and one end of a bent rod is driven by the spring long plate to rotate; the slope positioning rod is driven by the bent rod to slide in the groove shell, at the moment, one end of the slope positioning rod is separated from and abuts against the plane sawtooth plate, the groove shell can be driven to slide up and down in the hole positioning sliding groove, and when the groove shell is driven by the pull rope to move downwards, the pull rope must be pulled to slowly put down the groove shell.

The invention discloses a convenient-for-cooling sheepfold for goat breeding. Assembly structure among sheepfold units and assembly structure between the sheepfold units and a mounting door plate areutilized to realize assembly of a whole sheepfold body, and proper amount is selected to adjust size of the sheepfold body according to needs; if equipment of the sheepfold needs to be removed, only fixing piles need to be pulled out, so that convenience and quickness are realized; three uniform vertical strip-shaped clamping grooves are formed in the lateral side of an arc-shaped clamping groove,so that convenience is brought to assembling the sheepfold units from different directions, in this way, frame-shaped structure of the sheepfold body can be divided, goat flock environment is enabledto be cleaner and more sanitary, and assembly can be made according to needs; a cooling fan is mounted separately with the sheepfold units, so that cooling and air dissipation of the inner side of the sheepfold body are unaffected, and damage of the equipment caused by hitting of the sheepfold body by the goat flock is avoided; a fan mounting seat can be mounted and demounted according to the number of the goat flock and specific needs, so that convenience and flexibility are realized.

The invention discloses a plate solid-liquid separator which comprises a filter media rack, a filter media laid on the filter media rack and a filter media chamber located above the filter media. Theplate solid-liquid separator also includes a clutch mechanism. The clutch mechanism comprises a driving member and a gas bag connecting a filtrate cavity. The driving member is used to push the gas bag to press the filtrate cavity and the filter media rack, or to lift the gas bag to separate the filtrate cavity from the filter media rack. The plate solid-liquid separator has the advantages of easyoperation, high filtrate separation efficiency, good filtrate separation effect and low tendency to damage.

The invention discloses a pedal anti-falling protection device used for a moving walk. The device comprises a sliding rail support matched with the arc part of a tensioning trolley, a sliding rail arranged on the side, close to the tensioning trolley, of the sliding rail support, and a connecting part used for connecting the sliding rail support with the tensioning trolley; the sliding rail, the tensioning trolley and the connecting part form space at least allowing a part of pedal assembly to pass through; according to the pedal anti-falling protection device used for the moving walk, the sliding rail support matched with the arc part of the tensioning trolley is arranged, a pedal is supported and guided, when a pedal connecting block between the pedal and a pedal chain falls off, the relative position between the pedal and the pedal chain is ensured, the pedal can smoothly pass through the rotation end, the condition that the pedal falls off, and a person is hurt or equipment is damaged is avoided, a sliding rail is arranged to avoid rigid contact between the pedal and the sliding rail support, and the damage and the noise generated by the device can be avoided.

The embodiment of the invention discloses a supporting and moving division bar arrangement process special for heat treatment of aluminum alloy round ingots. The aluminum alloy round ingots are supported and stacked by adopting moving division bars and fixed division bars. The method comprises the following steps that S001, the fixed division bars are placed in the center of a material bearing table, and then movable division bars with the same number are placed at the two sides of the fixed division bar; then the aluminum alloy round ingot is placed on the division bars; S002, the fixed division bars are placed on the whole upper surface of the placed aluminum alloy round ingot, or the division bars are placed according to the mode in the step S001; then the aluminum alloy round ingot is placed on the division bars; S003, the step S002 is repeated until the preset stacking layer number is reached; and S004, the stacked aluminum alloy round ingots are subjected to heat treatment. By the adoption of the method, the contact area and friction force between the bearing movable division bars and a bearing point can be reduced, and damage such as extrusion marks on the surface of the aluminum alloy round ingot caused by relative displacement between the bearing platform and the division bars due to heating expansion caused by temperature change in the heat treatment process is avoided.

The invention discloses a non-contact adjustable limiting device suitable for punch processing. The device is arranged above a blanking upper beam of a punch; the non-contact adjustable limiting device suitable for punch processing comprises a limiting nut fixed above the blanking upper beam and a limiting stud arranged inside the limiting nut, and the limiting end body is arranged at the lower end of the limiting stud and above a working table of the punch; a detection gap is formed in the area between the limiting stud and the limiting end body, and the side end of the inspection gap is provided with a proximity switch. According to the non-contact adjustable limiting device suitable for punch processing, related parts of the punch are limited in time in a non-contact control mode, and the phenomenon that due to excessive blanking of the punch, equipment is damaged is avoided.

The invention discloses a local area network OTA firmware upgrading device, method and system, relates to the technical field of Internet of Things, and avoids damage to equipment caused by repeated plate disassembly and sealing processes, so that the firmware upgrading operation is simple, and the efficiency is higher. The main technical scheme is that the method comprises the steps: monitoring a protocol message in a local area network, and receiving a broadcast message sent by a client side, wherein the broadcast message at least comprises a to-be-upgraded firmware identifier, a source version number and a target version number corresponding to the to-be-upgraded firmware identifier and a firmware upgrading file downloading address; according to the to-be-upgraded firmware identifier in the broadcast message and the source version number corresponding to the to-be-upgraded firmware identifier, judging whether the current firmware of the equipment needs to execute firmware upgrading operation or not; if it is determined that the current firmware needs to be subjected to firmware upgrading operation, downloading a firmware upgrading package corresponding to the target version number according to the firmware upgrading file downloading address; and performing firmware upgrading operation on the current firmware according to the firmware upgrading package.

The invention discloses an electric drill convenient to overhaul. The electric drill convenient to overhaul comprises a housing, wherein a motor and a rotary shaft are arranged in the housing; the rotary shaft is driven to rotate by the motor; one end of the rotary shaft stretches out of the housing and a high-accuracy drill chuck is arranged on one end part of the rotary shaft; a drill bit is installed on the drill chuck; a ring of LED lamps is arranged on the housing and around the drill bit; a sighting device enabling the drill bit to be aligned with the position of a drill hole is further arranged on the housing; a support frame is further arranged below the housing; and the motor, the sighting device and the LED lamps are controlled by a controller. According to the electric drill disclosed by the invention, the LED lamps are arranged in front of the electric drill for illumination; the sighting device is arranged for sighting; the support frame is further arranged below the housing of the electric drill and used for supporting the whole electric drill; and when in use, the position of the electric drill is fixed at first, and then a push force is applied from the rear side of the housing of the electric drill to push the electric drill to move forwards to drill a hole, so that the problem that the electric drill cannot be operated due to a too small handheld space is avoided.

The invention discloses an intelligent gallium arsenide high-concentration combined heat and power generation system. The system comprises a remote general control table and at least one set of combined heat and power generation array, the combined heat and power generation array comprises a local monitoring device and at least one combined heat and power generation unit, and the combined heat andpower generation unit comprises a support, a transmission mechanism, a self-powering device, a first circuit and at least one set of combined heat and power generation module; the support comprises abase, a stand column and a framework, the base is fixed to an installation position, one end of the stand column is fixedly connected with the base, the other end of the stand column is connected with the framework through a transmission mechanism, and the combined heat and power generation module is arranged on the framework; and the first circuit comprises a control circuit and a first positioning module, and the control circuit pre-stores an unique ID corresponding to the control circuit and solar time corresponding to the installation position. The invention further provides a sun-tracking method realized by utilizing the intelligent gallium arsenide high-concentration combined heat and power generation system. According to the system, solar energy conversion rates are high, maintenance is convenient, maintenance cost can be greatly reduced, and the system is suitable for the technical field of photovoltaic power generation.

The invention relates to the technical field of control equipment, and in particular relates to multifunctional electric sliding table control equipment which comprises a mounting plate, a driving assembly is arranged at the bottom end of the surface of the mounting plate, extrusion assemblies are symmetrically arranged on the two sides of the driving assembly, lifting assemblies are symmetrically arranged at the positions, above the driving assembly, of the surface of the mounting plate, a touch assembly is arranged at the position, located above the lifting assemblies, of the surface of the mounting plate. According to the invention, when a top head below a micro-touch switch A is in contact with and squeezes the micro-touch switch A, the micro-touch switch A controls a lighting lamp B to be turned on and turned off so as to meet the lighting requirement at dusk, and when a top head below a micro-touch switch B is in contact with and squeezes the micro-touch switch B, the micro-touch switch B controls a lighting lamp A to be turned on and the lighting lamp B to be turned off so as to meet the lighting requirement at dusk, the lighting lamp A and the lighting lamp B which are different in brightness are turned on at dusk and at night to achieve the purpose of saving energy, and power consumption is reduced to a certain extent.

The invention relates to the technical field of transportation instruments, and discloses a plunger pump transportation device. The plunger pump transportation device comprises a transportation box shell, a protection bottom pad is fixedly installed inside the transportation box shell, a fixing supporting plate is fixedly installed on one side of the protection bottom pad, a plunger pump is fixedly installed on one side of the fixing supporting plate, the top end of the plunger pump is provided with a lifting handle which is fixedly installed on the top of the transportation box shell, and the bottom end of the lifting handle is provided with a first anti-skid handle which is fixedly installed on one side of the outer wall of the transportation box shell. The protective property of the transportation device is greatly improved through the protection bottom pad, the fixing supporting plate and a spring, the situation that equipment is damaged in the transportation process is avoided, on one hand, the use cost is reduced, on the other hand, the durability of the transportation device is improved, through a box door sheet and a door sheet groove, the installing and uninstalling convenience of the transportation device is greatly improved, the uninstalling and installing time is saved, the working efficiency is improved, and the practicability of the plunger pump transportation device is greatly improved.

The invention relates to an exciter fault analysis system and method, a storage medium and electronic equipment, and the system comprises an excitation current collection unit which is used for collecting the excitation current of an excitation loop; the exciting current analysis unit is used for analyzing the exciting current to obtain a harmonic component of the exciting current; the simulation unit is used for performing simulation analysis on the excitation system to obtain preset harmonic waves; and the fault analysis unit is used for comparing the harmonic component with a preset harmonic and analyzing the fault of the exciter according to a comparison result. According to the invention, the excitation current is analyzed, and comparison is carried out according to the preset harmonic wave to determine whether the exciter generates resonance, so that whether the exciter has a fault and the fault reason can be analyzed according to the comparison result, and the excitation system is prevented from damaging equipment due to resonance overvoltage.

The invention relates to an anti-collision device and method, and belongs to the technical field of crown block electrical equipment and methods. According to the technical scheme, a left oblique laser detection switch (6) and a left vertical laser detection switch (11) are installed above the left end of an end beam of a low-span crown block (7), a right oblique laser detection switch (12) and a right vertical laser detection switch (11) are installed above the right end of the end beam of the low-span crown block (7), and a wireless transmitting circuit (10) is installed in a cab of the low-span crown block. And the wireless receiving circuit (3) is arranged in a cab of the high-span crown block. The anti-collision device has the beneficial effects that the laser detection switch is applied above the end beam of the low-span crown block, so that anti-collision detection within the 3L range of the central point of the low-span crown block is realized, the safety of cross operation of the high-span crown block and the low-span crown block is ensured, and the situation that equipment is damaged due to collision of the high-span crown block and the low-span crown block is avoided.

The invention belongs to the technical field of power supplies, and particularly relates to a direct current power supply with an equipment protecting function. The direct current power supply comprises a shell, and also comprises a display screen and a control button which are arranged on the shell, and a current sensor, a voltage sensor, a power switch and an integrated circuit plate which are arranged in the shell, wherein an analog-digital switching circuit I, an analog-digital switching circuit II and a singlechip are arranged on the integrated circuit plate; and the power switch is connected with an output circuit of the power supply in series. The direct current power supply with the equipment protecting function can adjust output according to a rated working poser of the equipment and protect the equipment, and has a function of monitoring the output power of the power supply; and if the power output exceeds the rated working power of the equipment, the output circuit is automatically turned off to protect the equipment, and the equipment cannot be damaged.