44results about How to "Avoid equipment accidents" patented technology

The invention relates to a dendrite corrosion low-power checkout integration method. The method comprises the following steps of: firstly, milling, grinding, polishing a sample so that the checkout surface reaches the mirror smoothness; then, corroding the sample and eroding a corrosion reagent on the checkout surface for 1-2 min; washing, wiping and drying; and scanning and shooting by adopting a low-power detection suspension scanner camera device after the checkout surface is corroded, and then, processing and printing the image. The method provided by the invention can realize dressing detection and solve the defect existing in the suspension sample by adopting the low-power detection suspension scanner camera device. The invention can detect the cast-state structure of low-carbon steel, medium-carbon steel, high-carbon steel, low-alloy steel or alloy steel, steel blanks and large-size steel samples, observe the solidification structure and the defects thereof as well as the evolution conditions of the solidification structure and the defects of a thermally processed sheet and also check the relation between the solidification structure and the defects and has the advantages of accuracy, easy operability, environmental protection, and the like.

The invention relates to a multifunctional combined test valve for an SF6 gas moisture and decomposer tests to equipment of a transformer substation. The test valve comprises a three-way pin valve and an angle valve which are assembled together, wherein two valve joints of the angle valve are of right angles, the valve rod of the angle valve is of a column shape, and ventilating slots corresponding to the valve joints which are vertical to the valve rod are formed on the valve rod; and valve joints vertical to the valve rod on the angle valve are connected to the valve joints which are over against the valve rod of the pin valve and arranged on the pin valve. According to the multifunctional combined test valve, the operation of a humidity and decomposer test can be completed by once assembly and disassembly in the SF6 gas moisture and decomposer test to the equipment of the transformer substation; and power grid safety is better guaranteed in a live test, the emission amount of SF6 gas is reduced, and the air quality is improved.

The invention provides an automatic detection and regulation method and an automatic detection and regulation circuit for an air conditioner. The circuit comprises a singlechip control circuit, a phase-sequence detection circuit, a relay driving circuit, a display circuit, a power supply circuit, a compressor overcurrent protection circuit, a relay contact adhesion detection circuit and a startupdetection circuit. When the technical scheme is adopted, the power supply circuit provides a working voltage for the phase-sequence detection circuit, the display circuit, the singlechip control circuit and the relay contact adhesion detection circuit; the signals of the phase-sequence detection circuit, the relay driving circuit, the compressor overcurrent protection circuit, the relay contact adhesion detection circuit and the startup detection circuit are sampled and input into the singlechip control circuit; after the signals are processed by the singlechip control circuit, control instructions are output to a corresponding circuit to be executed; and the display circuit displays a phase-sequence output state and codes of various faults such as open phase, relay contact adhesion, relay operation failure, overcurrent and the like and gives a buzzing alarm, so that equipment faults caused by reversed phase, open phase or voltage unbalance are avoided.

The invention relates to a theodolite intelligent network monitoring method and system, which belong to the technical field of the Internet of Things. The invention aims at the operation status of theodolite equipment and establishes an independent intelligent network monitoring system. The system utilizes an embedded processing platform through rich data interfaces , receive, collect and process the information collection and communication of theodolite equipment, and can carry out human-computer interaction, so that real-time online monitoring and alarming of theodolite equipment can be carried out in a more intuitive and convenient way, helping users to find early hidden dangers of theodolite equipment in time, so as to avoid major The occurrence of equipment accidents ensures the safe operation of the theodolite machine, and also reduces equipment losses and maintenance costs caused by unplanned shutdowns and crashes of theodolite equipment. Store and establish the long-term operation data of theodolite equipment, which provides reliable data for future accident inquiry and optimization design.

The invention relates to a safety interlocking device and a control method for an electrode-connected platform of an LF refining furnace, and belongs to the technical field of refining equipment outside the LF furnace. Technical solution: Under the condition that the operator does not cut off the power of the three-phase electrodes, the computer disconnects the power switch through the electrode PLC control cabinet, the three-phase electrodes are powered off, and the green indicator light is on at the same time; when the operator leaves after operating the electrodes, At an interval of 15 seconds, after the operator reaches a safe position, the three-phase electrodes are energized, and the red light of the indicator light is on at the same time. The device structure of the present invention is reasonable, and the control method is simple and practical. When the operator forgets to disconnect the high-voltage switch and enters the electrode platform, after opening the safety isolation door, the power-off interlock device will be triggered, and the high-voltage switch will be automatically disconnected, effectively avoiding the electrode from being disconnected. Arc causes personal and equipment accidents.

The invention provides a positioning device and positioning method for a cloth roller on a tobacco shred storage cabinet. By the adoption of the positioning device and the positioning method, the problem that the cloth roller is not well covered by cover cloth, and accordingly moisture and fragrance in tobacco shreds are dissipated can be solved, and the quality of the tobacco shreds is guaranteed. Meanwhile, the situation that the cover cloth gets out of an outlet of the tobacco shred storage cabinet along with finished tobacco shreds, and accordingly quality or equipment accidents are caused is avoided. The positioning device comprises a positioning support, a positioning rod and a fastening handle. When the finished tobacco shreds are covered, an operator just needs to make the cover cloth pass through the cloth roller and move to the position of the outlet of the tobacco shred storage cabinet, a square head of a rotary shaft of the cloth roller is inserted into a square hole in the positioning rod, then a square shaft in the positioning rod is inserted into an open groove of the positioning support, the fastening handle penetrates through a threaded through hole in the positioning rod and stretches into the square hole, the positioning rod and the square head of the rotary shaft are pressed tightly, the cloth roller is positioned and limited in rotation, and therefore the dimension of the pulled-out cover cloth is limited. The positioning device has the characteristics of being simple in structure, firm, durable, safe, reliable, accurate in limiting and the like and has high application value in guaranteeing the tobacco shred quality and preventing the quality or equipment accidents.

The invention relates to a dendrite corrosion low-power checkout integration method. The method comprises the following steps of: firstly, milling, grinding, polishing a sample so that the checkout surface reaches the mirror smoothness; then, corroding the sample and eroding a corrosion reagent on the checkout surface for 1-2 min; washing, wiping and drying; and scanning and shooting by adopting a low-power detection suspension scanner camera device after the checkout surface is corroded, and then, processing and printing the image. The method provided by the invention can realize dressing detection and solve the defect existing in the suspension sample by adopting the low-power detection suspension scanner camera device. The invention can detect the cast-state structure of low-carbon steel, medium-carbon steel, high-carbon steel, low-alloy steel or alloy steel, steel blanks and large-size steel samples, observe the solidification structure and the defects thereof as well as the evolution conditions of the solidification structure and the defects of a thermally processed sheet and also check the relation between the solidification structure and the defects and has the advantages of accuracy, easy operability, environmental protection, and the like.

The invention relates to a multifunctional combined test valve for an SF6 gas moisture and decomposer tests to equipment of a transformer substation. The test valve comprises a three-way pin valve and an angle valve which are assembled together, wherein two valve joints of the angle valve are of right angles, the valve rod of the angle valve is of a column shape, and ventilating slots corresponding to the valve joints which are vertical to the valve rod are formed on the valve rod; and valve joints vertical to the valve rod on the angle valve are connected to the valve joints which are over against the valve rod of the pin valve and arranged on the pin valve. According to the multifunctional combined test valve, the operation of a humidity and decomposer test can be completed by once assembly and disassembly in the SF6 gas moisture and decomposer test to the equipment of the transformer substation; and power grid safety is better guaranteed in a live test, the emission amount of SF6 gas is reduced, and the air quality is improved.

The invention provides a shear spring, which belongs to the field of general mechanical components and is designed for overcoming the deficiency that the prior rubber shear spring is low in strength and poor in bearing capacity. A main body of the shear spring is a cylinder which is made from nonmetal elastic materials and is provided with a hole in the middle; two metal installation claw discs are pre-embedded inside a spring body near two end faces of the spring body; the installation claw discs are provided with threaded holes for installation and use; the two installation claw discs are connected together through a safety steel wire ring; and two ends of the installation claw discs are fixed by positioning pins. The shear spring has the characteristics of convenient installation, safereliable use and long lifespan, and can be widely applied to vibrating-screening or feeding machines or other equipment with high acting force and vibration intensity in industrial and mining enterprises.

The invention relates to a handcart type switch cabinet, including a handcart, an isolation device and a linear motion mechanism, the cabinet through providing the linear motion mechanism drives the handcart to do horizontal motions, namely the isolation device and the running trail of a main shaft both follow a horizontal direction, therefore in this process no torque is acted on the main shaft, the main shaft cannot undergo rigid deformations, the performance cannot be affected, thus guarantees the accuracy of the switch closing of the isolation device, and the main shaft follows the handcart body to do horizontal motions, converting a rotational motion to a horizontal straight line motion, the running mode is very stable, thus avoiding the occurrences of safety accidents and equipment accidents.

A banner detection device, comprising a T-shaped guide rod, a controller, a bracket installed on the side of the chain of the storage cabinet, a proximity switch arranged at the top of the bracket and a fixing seat directly below the proximity switch, the T After the spring is inserted into the T-shaped guide rod, it passes through the fixed seat from bottom to top, and the lower part of the T-shaped guide rod is provided with a top that can periodically push the bottom of the T-shaped guide rod as the banner moves. A pushing device, the pushing device can make the top of the T-shaped guide rod touch the proximity switch, and the controller receives and processes the signal of the proximity switch. The invention detects the state of the banner by installing the detection device, can find the abnormality of the banner in time, and can effectively avoid quality accidents or equipment accidents; the detection device can replace manual detection, and solve the problems of high intensity and low efficiency of manual detection.