61results about How to "Achieving Intrinsic Safety" patented technology

The invention discloses an improved RCM analysis method, and a mechanical equipment integrity evaluation system based on the same. The improved RCM analysis method includes the steps: S1, dividing the boundary for an ocean platform mechanical equipment system, and the hierarchical structure tree for all the equipment; S2, determining the performance index of each equipment in the hierarchical structure tree layer by layer; S3, determining the importance evaluation index, and according to the importance evaluation index, performing importance evaluation on all the equipment, and dividing the equipment into important equipment and unimportant equipment; S4, determining the fault mode of the important equipment, performing FMECA analysis on the important equipment, and determining the fault reason of each important equipment and the influence; S5, establishing a maintenance logic decision graph, performing logic decision on the important equipment and the unimportant equipment, determining the maintenance method of the important equipment and the unimportant equipment, and generating a maintenance outline; and S6, according to the maintenance outline, making a maintenance scheme which can be directly implemented. The improved RCM analysis method introduces the mathematic model and algorithm into the overall analysis process to convert qualitative analysis into quantitative analysis so as to obtain a relatively more visual and accurate analysis result.

The invention discloses a method for early warning of enterprise safety production risks. The method establishes a comprehensive early warning closed-loop (PDCA) process management model and open and hierarchical early warning index pool construction, and uses early warning index algorithms to evaluate safety production indexes The present invention aims to effectively improve the prevention and immunity of enterprise safety production management, help enterprises reduce the risk of accidents from the source of accidents, realize the intrinsic safety of enterprises, and lay a solid foundation for building a safe and preventive production environment and a harmonious and safe society.

The invention discloses an underground coal mine coal seam drilling high-pressure gas fracturing and permeability increasing system, and belongs to the field of coal seam gas extraction. The system comprises an underground coal mine compressed air system, and is characterized in that the underground coal mine compressed air system is connected with a gas injecting system which is connected with a liquid injecting system and a slurry injecting system, a fourth valve is connected between a compressed air pipeline and a pneumatic main pipeline of the underground coal mine compressed air system, the pneumatic main pipeline is connected with a first branch pipeline, a second branch pipeline and a third branch pipeline through a four-way pipe, a sixth valve is arranged on the first branch pipeline which is connected with a pneumatic booster pump, an eighth valve is arranged on the second branch pipeline which is connected with a pneumatic first slurry injecting pump, a seventh valve is arranged on the third branch pipeline and is connected with a pneumatic second slurry injecting pump, and a fourth valve is connected to the pneumatic main pipeline. The underground coal mine compressed air system provides an air source for high-pressure gas fracturing and permeability increasing, the air source is easy to obtain, and all components in the system are no-power components and are safe and reliable.

The invention discloses a boundary coal shortwall continuously-mining tunnel arrangement and coal pillar preserving methods, according to three typical overlying rock structures, three coal pillar arrangement methods are proposed, and the three coal pillar arrangement methods are respectively a block section wide coal pillar arrangement method, a block section narrow coal pillar arrangement method and a block section non coal pillar arrangement method. Compared with the traditional shortwall continuously-mining tunnel technique tunnel arrangement and coal pillar preserving methods, by the boundary coal shortwall continuously-mining tunnel arrangement and coal pillar preserving methods, the coal pillar size is reduced, the recovery rate of resources can be improved, the roof essential security can be realized, roof safety can be effectively controlled, tunnel excavation and maintenance amount can be reduced, and the risk of coal spontaneous combustion can be reduced.

The invention relates to the technical field of the oil-gas recovery technology of the storage tank and in particular to an oil-gas recovering system of a storage tank and a control method thereof. The provided oil-gas recovering system of the storage tank comprises the storage tank, a fluid distributing tank, a first compressor, a second compressor, a first separating tank, a second separating tank, a balance tank, an oil-gas recovering device and a buffering tank. The storage tank is successively connected with the fluid distributing tank, the first compressor, the first separating tank and the balance tank. The balance tank is respectively connected with the fluid distributing tank and the storage tank to form an oil-gas balance system. The storage tank is successively connected with the fluid distributing tank, the second compressor, the second separating tank, the oil-gas recovering device, the buffering tank and the storage tank to form the oil-gas recovering system. The oil-gas recovering system of the storage tank is capable of, through the setting of the balance tank, reducing the design load of the oil-gas recovering device, maintaining the stable running of the oil-gas recovering device, avoiding the frequent and great alternating running of the device, reducing the alternating fatigue of the device, and reducing the safety risk. The compared with the current oil-gas recovering device, the design load is reduced by 50%-80%.

The invention discloses a voice alarm system for underground coal mine inclined drift travelling crane and pedestrian. A personnel positioning substation is used for receiving personnel positioning card information read by a personnel positioning card reader, meanwhile receiving winch start-stop state transmitted by a winch start-stop sensor, and uploading the state to an upper computer through an industrial Ethernet switch in real time; a data conversion module is used for receiving commands transmitted by the upper computer through the industrial Ethernet switch; a sound power amplification module is used for outputting voice in a sound mode through a loudspeaker; the upper computer is used for sending commands of the personnel positioning card information read by the personnel positioning card reader through the industrial Ethernet switch, storing detailed information of intrude personnel, and transmitting alarm information broadcasted after processing to a data conversion module of a voice broadcasting system through the industrial Ethernet switch. The system prevents personnel from intruding an inclined drift travelling crane zone by mistake, and the upper computer on the ground displays pedestrian information during travelling, and warns staffs not to intrude the zone during travelling, so that the intrinsic safety of inclined drift transportation is realized.

The invention discloses an intelligent informatization management expert system for security monitoring of tailings ponds. The technical scheme of the intelligent informatization management expert system includes the steps of 1), special design of an online monitoring device for the tailings ponds; 2), mounting of the online monitoring device for the tailings ponds; 3), online management software development of the tailings ponds; 4), online supervision of tailings pond management departments; 5), classification of software system permissions; displacement and seepage line monitoring devices (1) and video monitoring devices (2) are mounted from the tailings pond A to the tailings pond N, acquired data are stored and converted via enterprise terminals (3) and are transmitted to provincial information center servers (4) through internets, a provincial supervision terminal (5), a municipal supervision terminal (6) and a county-level supervision terminal (7) monitor running states of the tailings ponds through the internets at full time, and an ultimate service expert terminal (8) performs real-time diagnosis and prescription through the system. By the arrangement, standardization, scientization, informatization and real-time transformation of security monitoring work of the tailings ponds are realized, efficiency in management work of the tailings ponds is greatly improved, management cost is lowered, and accident rate is reduced.

The invention discloses a magnetic-control explosion-proof press button. The magnetic-control explosion-proof press button comprises a magnetic driving isolation chamber and a static contact connecting chamber, the magnetic driving isolation chamber is made of non-magnetic material which cannot prevent the penetration of a magnetic field, an insulation plate of the static contact connecting chamber is provided with a conducting terminal and a contact, a closed end and an opened end are arranged in the magnetic driving isolation chamber in a contraposition manner, corresponding holes of the two ends are respectively provided with a permanent magnet and a positioning spring assembly, a passive permanent magnet on the closed end is fixedly provided with an insulator and a movable contact, an initiative permanent magnet on the opened end is provided with a button head, the magnetic driving isolation chamber and the static contact connecting chamber are connected with a compression contact chamber seal element through a bolt to form a closed contact chamber, and a magnetic-control explosion-proof press button assembly is formed. The magnetic-control explosion-proof press button has the advantages that the pair of permanent magnets with the limiting springs is isolated and oppositely arranged to form the balance of the magnetic field force and the resilient force, the mechanical balance is broken through by pressing the initiative permanent magnet so as to indirectly drive the movable contact to control the connection and disconnection of the circuit, electric spark of the contact is closed and isolated, and the explosion prevention can be realized.

The invention relates to the technical field of servo systems, and discloses a method and a device for implementing an intrinsically safe servo system. The method comprises: calculating a given command acceleration according to an issued position command; acquiring and recording an encoder feedback value of each sampling period in real time; calculating feedback acceleration of the current periodand acceleration of the previous period according to the encoder feedback value; calculating an acceleration sudden change value, comparing the acceleration sudden change value with a preset acceleration sudden change threshold, and combined with the given command acceleration and the feedback acceleration and the feedback current, determining whether the servo system collides during operation, and stopping operation of the servo system when collision occurrence is determined. The method realizes sensorless safety elastic collision by adopting a self-adaptive composite control technology, andrealizes safe operation of a motor based on current coupling relationship of encoder and the motor, thereby realizing intrinsic safety of the servo system.

The invention discloses an enterprise risk early warning method and device, electronic equipment and a readable storage medium. The method comprises the steps of obtaining a plurality of indexes of enterprise safety production and values of the indexes, and determining an enterprise safety early warning index according to the obtained indexes and the values of the indexes; and performing early warning on enterprise risks according to the enterprise safety early warning index and a preset early warning rule. The enterprise management level can be monitored in real time, the selected data indexes cover the requirements of the enterprise safety production standardization basic specification GB/T 33000-2016, the conditions and change trends of the enterprise safety production condition in all aspects can be represented, qualitative and quantitative indexes are combined, and the enterprise safety production quality is improved. Meanwhile, selection of index items can be continuously adjusted according to safety production conditions of different enterprises and acceptable degrees of enterprise risks so as to adapt to development requirements of the enterprises; according to the invention, manual data management and manual early warning message issuing are not needed, and data distortion caused by manual misoperation is avoided.

The invention relates to an intelligent blasting fastener of a coal mine. The intelligent blasting fastener is characterized by comprising a personnel function identifying card module, a safe blastingcontroller, a safe monitoring module, a positioning sensor module, a blasting machine module and an alarming apparatus module; the personnel function identifying card module comprises a blasting staff function identifying card, a guarding staff function identifying card and a gas detecting staff function identifying card; after the blasting staff function identifying card, the guarding staff function identifying card and the gas detecting staff function identifying card are inserted into the safe blasting controller, the blasting fastener can be contacted; the safe blasting controller is connected with the safe monitoring module, the positioning sensor module, the blasting machine module and the alarming apparatus module; and the safe blasting controller is further connected with a time relay.

The invention provides a press-open type spraying execution mechanism. A spray head is arranged at the tail end of a pipeline in a spraying system of the press-open type spraying execution mechanism,a stainless steel opening sealing piece is arranged in front of the spray head, a connecting piece is arranged between the opening sealing piece and a nozzle, a gas exhaust hole is formed in the connecting piece, the nozzle is fixed below the connecting piece, a spraying mechanism is arranged at the tail end of a pipeline of an fire extinguishing system, the spraying mechanism is connected with afire-fighting water pipeline, a one-way valve is arranged at the position, in front of a workshop, of the fire-fighting pipeline, an inflation valve, a safety valve, an electric contact pressure gaugeand a manual valve are matched above a tank body of an energy storage tank to be used for monitoring pressure in the tank body and for low-pressure early warning, the rear portion of the manual valveis connected with a high-speed electromagnetic valve, the rear portion of the electromagnetic valve is connected to a tee joint, in front of the workshop, of the fire-fighting water pipe through a pipeline to be combined with the fire-fighting water pipe, and the high-speed electromagnetic valve communicates with the fire-fighting pipeline. According to the press-open type spraying execution mechanism, after improvement, the technical requirements that flammable and explosive places such as a fire-fighting pipe net and a spraying system require rapid fire extinguishing response are further met, through electromechanical separation design, the intrinsic safety in the workshop is realized, the working stability and the safety of the system are further improved, and more manufacturing cost is reduced.

The invention relates to the field of preparation of epoxypropane, and discloses a method for preparing epoxypropane through direct epoxidation of propylene. The method comprises the following steps: under the condition of propylene epoxidation reaction, carrying out contact reaction on mixed gas of reaction raw material gas and diluent gas and a catalyst to obtain epoxypropane, wherein the reaction raw material gas comprises propylene, oxygen and hydrogen, and the diluent gas is propane. The propylene epoxidation reaction is carried out by taking the propane as the diluent gas, so that the service lifetime of the catalyst is remarkably prolonged, and the reaction selectivity and the propylene conversion rate are also improved.

The invention relates to a novel full-static airflow emulsification process which comprises the following steps: firstly, introducing hot water into a heating coil to preheat and preheat a pneumatic pre-emulsion tank, and then pumping an oil phase solution into the pneumatic pre-emulsion tank from an oil phase feeding pipe; then feeding compressed air into the pneumatic pre-emulsion tank, and pumping the water-phase solution into the pneumatic pre-emulsion tank from the water-phase feeding pipe; when the water-phase solution is added, adjusting the opening degree of an electric adjusting valve of compressed air, increasing the air flow for emulsification, continuously dispersing bubbles sprayed out of small holes of the air flow pipe through the four layers of screens and fully distributing in the whole tank body, wherein under the action of the dispersed small bubbles, water-phase tiny liquid drops continuously enter the oil-phase solution to form a water-in-oil coarse emulsion matrix. According to the invention, potential safety hazards caused by a mechanical rotating part are thoroughly eliminated from the source, and the safety of the production process is greatly improved.

The invention discloses an integrated wellhead device for oil and gas well emergency rescue. The integrated wellhead device mainly comprises a casing sealing device, a casing clamping device and a flow guiding device, the flow guiding device is a trumpet-shaped flow guiding cover with the small upper part and the large lower part, the upper partwith the smaller inner diameter of the flow guiding cover communicates with the casing clamping device, the casing clamping device is a slip, and the upper part of the casing clamping device is connected with the casing sealing device. According to theintegrated wellhead device for oil and gas well emergency rescue, the number of operation times of personnel going to a wellhead during a wellhead resetting operation link is decreased, intrinsic security is realized, wellhead resetting is changed from 'an eight-step method' to 'a one-step method', and the emergency disposal efficiency offirecatching caused by out-of-control blowout of an oil andgas wellis improved.

Disclosed is a safe economical square billet caster tundish casting control device. The safe economical square billet caster tundish casting control device comprises a fixed base plate; a bracket is arranged below the middle left portion of the fixed base plate; a water nozzle bearing frame is arranged between the fixed base plate and the bracket; a reversing bracket is arranged below the middle right portion of the fixed base plate; the water nozzle bearing frame is provided with a cast-on lower water nozzle, a hole burning plug plate, a casting lower water nozzle, an inner side ejector block and an outer side ejector block which are closely arranged in turn; a sand blocking plate is arranged below the cast-on lower water nozzle; the water nozzle bearing frame is provided with an opening plate, an opening plate locking groove, a locking clasp and an opening plate driving gear; an air brick is arranged inside the hole burning plug plate; a stepper cylinder is arranged on the water nozzle bearing frame; the reversing bracket is provided with a reversing plate which is provided with a reversing groove and a straight gear; the straight gear is meshed with a locking main gear; the locking main gear is meshed with a locking gear; a reversing cylinder is arranged on the reversing bracket. According to the safe economical square billet caster tundish casting control device, the remote control operation of the transposition process of the cast-on lower water nozzle, the hole burning plug plate and the casting lower water nozzle and the replacement process of the casting lower water nozzle can be implemented.

The invention discloses a petrochemical equipment major risk remote diagnosis system and method based on mixed reality, wherein the system comprises: a petrochemical equipment recognition module whichis used for receiving the collected image information of a risk site, and recognizing petrochemical equipment in the image information; a mixed reality scene generation module which is used for acquiring static information and dynamic information corresponding to the petrochemical equipment and generating a risk site mixed reality scene according to the image information and the static information and the dynamic information corresponding to the petrochemical equipment; and a remote terminal that is used for receiving the risk site mixed reality scene and displaying the risk site mixed reality scene to remote diagnosis personnel. The problem that multi-dimensional risk information cannot be accurately shared in time, experts must be on site, and the experts are limited by time and space in traditional diagnosis is solved.