33results about How to "Improve the level of intrinsic safety" patented technology

The invention provides a ground remote control system for downhole electric locomotives, and belongs to the technical field of downhole mining. The ground remote control system for the downhole electric locomotives comprises a dispatching and ore blending unit, a locomotive unit, an operation unit, an ore loading unit and an ore unloading unit. The dispatching and ore blending unit comprises a digital ore blending system and a digital locomotive dispatching system; the locomotive unit comprises a downhole electric locomotive transport system and an electric locomotive automatic protection system; the operation unit comprises a downhole narrow gauge signal concentrating locking control system, a control console system, a wireless communication system a 100 M network communication system and an uninterrupted power system; the ore loading system comprises a draw shaft remote ore loading system and a draw shaft remote ore loading video monitoring system; the ore unloading system comprises an automatic ore unloading system and an unloaded-ore automatic sweeping system. The ground remote control system for the downhole electric locomotives has the advantages that work of a downhole electric locomotive driver and work of an ore drawing worker are integrated, the working position is moved to the ground from the downhole, the intrinsic safety level is improved, occupational diseases are avoided, safe and efficient operation of the electric locomotives is ensured, operation is simplified, the operation ratio of the electric locomotives is improved, machine-hour efficiency of the electric locomotives is improved, production and organization efficiency is improved, and stability of the output grade is improved.

The invention relates to the technical field of petroleum drilling safety, in particular to a safe monitoring and protection device for drilling and an intelligent protection system of the safe monitoring and protection device. The safe monitoring and protection device for drilling comprises a data acquisition unit, a control processing unit and a safe protection execution unit; the control processing unit comprises an PLC (programmable logic controller) and an industrial personal computer, the PLC is connected with the industrial personal computer through a serial port; various kinds of sensors of the data acquisition unit acquire on-site operation data and transmit the data to the PLC and the industrial personal computer in real time; the safe protection execution unit comprises a pumping pressure protection mechanism and a runner wagon protection mechanism; a pressure sensor mounted on a vertical pipe or a slurry pump, a winch sensor mounted on a winch barrel and a weight transducer mounted on a deadline anchor output signals to be connected with the PLC; the PLC is in control connection with the pumping pressure protection mechanism and the runner wagon protection mechanism. According to the safe monitoring and intelligent protection device for drilling, the safe protection execution unit comprises a pumping pressure protection sub-system which mainly adopts an active response type safe protection method, and when pumping pressure reaches a set protection value, the pump stops firstly and then pressure relief is performed.

The invention discloses a source network load storage coordination level evaluation method based on a risk thought. The source network load storage coordination level evaluation method is characterized in that a source-grid-load-storage coordination level evaluation model is provided under the background that the source-grid-load-storage coordination optimization mode becomes the development trendof the power system; the source-grid-load-storage coordination level evaluation model firstly analyzes internal and external uncertain factors affecting the coordination ability of the system based on the idea of risk identification, and then establishes an evaluation index system considering multi-agent interaction and layering; and secondly, the source-grid-load-storage coordination level evaluation model proposes a quantitative calculation method of quantitative indexes and a processing mode of qualitative indexes, establishes a source-network-load-storage coordination level evaluation model, and determines the weight of each level of indexes by using an analytic hierarchy process and a Delphi method in combination with an empowerment method. According to the constructed evaluation model, the source-grid-load-storage coordination level of the power system is scientifically and systematically evaluated for planning schemes of three areas of a certain province, and a decision reference is provided for planning and operation scheme optimization of the power department, and the intrinsic safety level of the system can be improved.

The invention discloses a whole lifecycle safety management and control and emergency system and a whole lifecycle safety management and control and emergency method of industrial explosives. The whole lifecycle safety management and control and emergency system of the industrial explosives comprises an industrial explosive RFID (radio frequency identification) tracing intelligent management and control system and a civil explosive emergency information platform, wherein the industrial explosive RFID tracing intelligent management and control system comprises an industrial control system, a video monitoring system and a civil explosive road transportation vehicle monitoring system, and the industrial control system, the video monitoring system and the civil explosive road transportation vehicle monitoring system carry out real-time communication with the civil explosive emergency information platform through an Internetwork. The whole lifecycle safety management and control and emergency system and the whole lifecycle safety management and control and emergency method of the industrial explosives have the advantages of safety, real time, reliability, high informatization and the like.

The invention discloses a systematic method for equipment integrity management of an oil-refining chemical engineering enterprise. The systematic method comprises the following steps of acquiring basic data in equipment management, and evaluating an existing equipment management method of the enterprise; establishing an enterprise equipment integrity management method which relates to a policy, an object, organization resource and file control, training, equipment selection and grading management, risk management, quality assurance, testing and preventive maintenance, equipment professional management, defect management, variation management, performance monitoring and corrosion preventing measures, management review and continuous management; and carding and making a corresponding equipment management process and an operation file. Through effectively applying equipment integrity management, the systematic method has advantages of improving equipment intrinsic safety level, improving equipment management level, improving safety, reliability and economic performance of the equipment, eliminating potential hazard of the equipment, preventing equipment accidents, and ensuring safe and long-period operation of the oil-refining chemical engineering enterprise.

The invention provides an intelligent routing inspection method and system for a gas pipe network, and solves the technical problem that the existing intelligent routing inspection is lack of effectively sensing the complete information dimension of the environment space of the pipe network. The method comprises the following steps: segmenting a pipe network space to form design feature description of entity resources in a local space; continuously sampling physical attributes of the entity resources in the local space to form morphological feature description; continuously sampling environment attributes of the entity resources in the local space to form environment feature description; performing offset quantization through continuous morphological feature description and environment feature description to form objective situation description of a pipe network space; and obtaining subjective situation description of the entity resource according to the design feature description, and evaluating the operation state and the state trend of the entity resource according to the objective situation description and the subjective situation description. And obtaining rich objective description dimensions corresponding to the subjective description dimensions in the objective environment. Objective situation description based on objective environment performance data is formed, and the intrinsic safety level of gas enterprises is improved.

The invention discloses an intelligent interception key interlocking system, which consists of an intelligent key management and control system, an interception key interlocking system and an auxiliary hasp padlock system. The system comprises the following use steps: S1, obtaining authorization of the intelligent key management and control system; S2, taking out a corresponding authorization keyfrom the intelligent key cabinet; S3, inserting a key to cut off a power source, and releasing a safety key A; S4, inserting the safety key A, and replacing an access control key from an interlockingconverter; S5, inserting the access control key to open an access door; S6, entering a maintenance area and unlocking an internal control bolt lock; and S7, restarting the equipment, and correctly resetting the authorization key after quit of personnel. According to the invention, hierarchical and classified management and control of personnel entering a protection area can be standardized, mechanical protection and maintenance energy isolation are combined, the essential safety of an enterprise is improved, and the authorization management level of the enterprise is improved through the intelligent management and control specification.

The invention relates to a subsection intelligent controller for an underground electric locomotive string, which belongs to the technical field of controller structures and comprises a control switch. The input end of the control switch is connected with a power supply, a Hall current transformer is arranged between the power supply and the control switch, the control switch comprises a digital logic circuit and a transistor IGBT, the output end of the IGBT is connected with the string, a gate pole of the IGBT is connected with the output end of an oscillator and a rail connected with the ground, the output end of the oscillator is connected with an inductor which is connected with the string, a capacitor is installed in a locomotive on the rail, and the capacitor is connected with the string through an electric arc. The subsection intelligent controller is reasonable in circuit design and capable of shrinking string electrification range as much as possible, shortens string electrification time and greatly reduces accident incidence.

The invention provides a safety control method used for a chemical heating furnace. When a material temperature indicating instrument detects that the temperature of outflow materials falls, the material temperature indicating instrument transmits signals to a controller; the controller judges whether a draught fan stop signal or an air flow rate decreasing signal exists, and if relevant signals do not exist, the operation of increasing the fuel flow rate is conducted according to an original procedure; if the controller judges that any of the draught fan stop signal or the air flow rate decreasing signal exists, the fuel flow rate is not increased, and if only the air flow rate decreasing signal exists, the fuel flow rate is decreased correspondingly according to an air flow rate decreasing index. A draught fan stop control system and an air flow rate decreasing control system are combined for use, and it can be guaranteed that after one control system is disabled, the other safety control measure can be used for ensuring the safety of the heating furnace, and flash-explosion accidents are avoided; the intrinsic securitization level of the heating furnace can be greatly raised; non-planed stop is reduced; and safe and stable operation of the heating furnace is guaranteed.

The invention discloses a mine intelligent permanent magnet vacuum circuit breaker, which comprises an intelligent permanent magnet vacuum circuit breaker, an upper computer, a driving board, an ARM interface and a photoelectric signal, and is characterized in that the intelligent permanent magnet vacuum circuit breaker comprises a digital signal processor (DSP) chip, an ARM processor chip, a PLC and an ARM interface, the input end of the intelligent permanent magnet vacuum circuit breaker is electrically connected with the output end of the digital signal processor (DSP) chip, and the input end of the intelligent permanent magnet vacuum circuit breaker is electrically connected with the output end of the ARM processor chip. According to the permanent magnet vacuum circuit breaker, intelligent components and reliable elements are adopted, and the permanent magnet vacuum circuit breaker has an online monitoring technology and an intelligent operation technology through a network communication technology, so that the breaking capacity and the service life of the intelligent circuit breaker are improved, and the overvoltage in the underground coal mine power gridand the interference of power grid harmonic waves are well inhibited so as to greatly improve the reliability and the service life of the circuit breaker and improve the breaking capacity of the circuit breaker.

The invention discloses a key operating vehicle safe operation early warning and emergency risk avoiding system, which comprises a basic information input unit, an identity verification unit, a vehicle inspection unit, a driver monitoring unit and a vehicle driving environment monitoring unit, and has the beneficial effects that the real-time video monitoring of the vehicle operation condition can be realized; the intrinsic safety level of vehicle operation can be improved, and the positive effect on reducing accident potential is achieved; monitoring personnel can send voice reminding information to a vehicle in real time, illegal behaviors such as smoking, calling and fatigue driving of a driver are corrected in time, and therefore accident potential is reduced, enterprise cost is indirectly reduced, internal management of an enterprise is refined, and quality of employees is improved; in addition, illegal behaviors of the driver can be captured in real time for evidence obtaining and uploaded to a city platform for storage, real, transparent and effective information data of transportation enterprises are provided for supervision departments, and the industry safety level can be improved.

The invention discloses a metal bayonet for preparing a metal detonating cord. The metal bayonet for preparing the metal detonating cord is characterized in that the metal bayonet is of a tubular structure; the height of the metal bayonet is 50-200mm, the tube external diameter is 100-300mm, and the tube internal diameter is 1-20mm; and upper and lower end openings of the tubular metal bayonet are both provided with branched round tube openings. A cooling method of the metal detonating cord includes the steps that a low-temperature medium refrigerating machine is started at first, and the metal bayonet is pre-cooled; and when the temperature of the metal bayonet reaches -10 to 15 DEG C, a cord making machine is started until cord making is completed. By means of the metal bayonet for preparing the metal detonating cord and the cooling method, potential risks caused by a drying process at the later period of detonating cord making by a water-based single-compound explosive are overcome, and the intrinsic safety level of the detonating cord production process is increased. Compared with the mode of using a high-temperature drying system, the intrinsic safety level of production equipment is increased obviously by using a low-temperature medium; and designability of the metal bayonet of coiled metal foil is fully utilized, and the manufacturing links of the detonating cord are simplified.

The invention relates to the field of output rotating shaft angular velocity measurement of a to-be-measured object. The invention discloses a method for realizing multifunctional speed measurement of a rotating mechanism based on a logic controller. A coded disc is prepared according to the diameter of an output rotating shaft of a to-be-measured object; a proximity switch is installed on the to-be-measured object, a transmitting head and a receiving head of the proximity switch are aligned with the through hole circle of the coded disc, and the proximity switch is connected with a PLC; and the PLC receives signals of the proximity switch to form pulses, the total pulse number A is obtained in a time period T, the angular velocity [omega] of the output rotating shaft of the object to be measured is equal to 2[pi]*A / (T*N), N is the number of the through holes, and [pi] is the circumference ratio. Various defects existing in a complex industrial field environment when a traditional integrated pulse speed measuring device is used are overcome.

The invention discloses a method for robot safety level assessment. The method comprises the following steps that 1, according to an input module in a robot integrated system and a logical control module and an output module in a control cabinet, a minimum safety performance control unit PLs is determined; 2, the number of input units Nlow is determined; and 3, the overall safety performance level PLr is determined. According to the method, through assessment of the robot safety level, the robot safety level can be assessed in the design early stage, thus risks are reduced or eliminated in the design source, the intrinsic safety level of a machine is improved, and safe production of the manufacturing industry is facilitated. The integral safety level of a set of system can be assessed vividly and digitally, and a feasible assessment tool is provided for a designer.

The invention discloses a method for robot safety level assessment. The method comprises the following steps that 1, according to an input module in a robot integrated system and a logical control module and an output module in a control cabinet, a minimum safety performance control unit PLs is determined; 2, the number of input units Nlow is determined; and 3, the overall safety performance level PLr is determined. According to the method, through assessment of the robot safety level, the robot safety level can be assessed in the design early stage, thus risks are reduced or eliminated in the design source, the intrinsic safety level of a machine is improved, and safe production of the manufacturing industry is facilitated. The integral safety level of a set of system can be assessed vividly and digitally, and a feasible assessment tool is provided for a designer.

The invention discloses an electric intelligent bracelet based field safety management and control system, which comprises multiple bracelet modules and a background server, wherein the bracelet modules are worn on hands of constructors; the background server is wirelessly connected with the bracelet modules; each bracelet module comprises a CPU module, a physiological sensor, a fingerprint sensor, a communication module and a GPS module; and the CPU modules are all electrically connected with the physiological sensors, the fingerprint sensors, the communication modules and the GPS modules. Byusing the system, an intelligent bracelet device and a background data analysis system are integrated; and an electric construction field is visualized through the identity identification, physiological characteristic monitoring and positioning function of a bracelet. The safety management in a conventional safety management module can be carried out separately; the deficiencies that a detail islacked and the beforehand early warning intervention is lacked in an operation process are improved; further, the conventional safety management is upgraded to a management mode which is transparent in operation process, controllable in critical operational node and predictable in safety effect; and the nipping-in-the-bud ability of an electric department is increased.

The invention discloses a preparation method and application of a molybdenum catalyst. The method firstly reacts pentaerythritol and ethylene oxide to prepare macromolecular alcohol; and then reacts the macromolecular alcohol and ammonium dimolybdate in the presence of a solvent to prepare Molybdenum catalyst solution. The molybdenum catalyst can be used in the epoxidation reaction of styrene. Under the reaction conditions, the catalyst is in a homogeneous state. After the reaction is completed, the catalyst can be precipitated from the epoxidation reaction liquid by cooling down, and the catalyst can be obtained by simple separation. The method can effectively improve the conversion rate of styrene and peroxide, effectively reduce the content of by-products, improve the selectivity of the product ethylene oxide, the catalyst is easy to recover, and the molybdenum catalyst can be recycled and applied, which is a green synthesis method. craft.

The invention discloses a metal bayonet for preparing a metal detonating cord. The metal bayonet for preparing the metal detonating cord is characterized in that the metal bayonet is of a tubular structure; the height of the metal bayonet is 50-200mm, the tube external diameter is 100-300mm, and the tube internal diameter is 1-20mm; and upper and lower end openings of the tubular metal bayonet are both provided with branched round tube openings. A cooling method of the metal detonating cord includes the steps that a low-temperature medium refrigerating machine is started at first, and the metal bayonet is pre-cooled; and when the temperature of the metal bayonet reaches -10 to 15 DEG C, a cord making machine is started until cord making is completed. By means of the metal bayonet for preparing the metal detonating cord and the cooling method, potential risks caused by a drying process at the later period of detonating cord making by a water-based single-compound explosive are overcome, and the intrinsic safety level of the detonating cord production process is increased. Compared with the mode of using a high-temperature drying system, the intrinsic safety level of production equipment is increased obviously by using a low-temperature medium; and designability of the metal bayonet of coiled metal foil is fully utilized, and the manufacturing links of the detonating cord are simplified.

The invention relates to a dynamic action risk identification method for field operation personnel of an electric power system. According to the method, skeleton information of the field operation personnel of the electric power system through employing a human body posture estimation method, thereby converting video information into an undirected graph containing the skeleton information; and then, the action recognition of the field operation personnel is realized by utilizing a space-time diagram convolutional network. According to the invention, the risk identification of the dynamic behaviors of the field operation personnel can be realized, and the dynamic violation behaviors and risks of the field operation personnel can be identified in real time, thereby providing a technical means for the early warning and management and control of the safety risk of the power production field, reducing the accident occurrence probability of a power system, and improving the intrinsic safetylevel of power production.

The invention discloses a firework and cracker safety supervision system and method. The system can comprise a safety supervision terminal and an enterprise terminal, wherein a firework and cracker production enterprise uploads firework and cracker basic information through the enterprise terminal; and the safety supervision terminal carries out firework and firecracker safety supervision according to the firework and firecracker basic information uploaded by the enterprise terminal. Through cooperative safety supervision, safety guarantee is provided for management of fireworks and crackers, and economic benefits and social benefits are generated.

The invention discloses a demoulding device and method in automatic electric detonator assembling. The demounting device comprises a clamping body and a demounting device body. A wire assembling groove is formed in the middle of the clamping body. A mounting hole and a positioning hole which are of a through hole structure are formed in the clamping body. A wire mounting groove communicated with the wire assembling groove and the mounting hole are formed in the clamping body. The demoulding device body comprises a fixing plate. A guide hole is formed at the bottom of the fixing plate. An air cylinder corresponding to the position of the guide hole is disposed above the guide hole. The air cylinder is mounted on the fixing plate. An electric detonator wire group demoulding air cylinder is disposed at the top of the fixing plate. An electric detonator wire group demoulding working plate is disposed at the bottom of the n electric detonator wire group demoulding air cylinder. Guide columns are disposed between the top and the bottom of the fixing plate.

The invention discloses a subsurface defect detection device and method based on an alternative current electromagnetic field. The subsurface defect detection device comprises an excitation coil, a magnetic core, a detection coil, a signal adjuster, an A / D (Analog-to-Digital) acquisition card, a computer, a power supply, a pulse signal exciter and a power amplifier. Compared with the prior art, the subsurface defect detection device generates a periodic pulse signal through a pulse signal generator, the periodic pulse signal is applied to an excitation probe, then an alternating pulse magnetic field is sensed on the subsurface and the deep layer of a workpiece, filtering and denoising are continued by a signal modulation circuit, the data acquisition card based on a USB (Universal Serial Bus) is adopted for acquisition, an instantaneous signal analysis method is adopted to draw sensation voltage signal peak value waveforms in the BX direction and the BZ direction, and thus intelligent recognition and quantification on subsurface defects and deep layer defects are achieved. By virtue of the subsurface defect detection device and method, the defects of a deep layer defect alternative current electromagnetic field detection technique are effectively made up, and a completely novel method is provided for high-sensitivity comprehensive rapid quantitative recognition on subsurface detects and deep layer detects of a structural body, and the essential safety level of a facility structure is improved.

The invention relates to the field of heat exchangers, and discloses a heat exchange unit and a heat exchange reactor. The heat exchange unit comprises a base body (4), and a heat exchange medium channel (1) and reaction fluid channels (2) which are arranged in the base body (4), and is characterized in that the heat exchange medium channel (1) is positioned in a center of the heat exchange unit,the plurality of reaction fluid channels (2) are dispersedly wrapped outside the heat exchange medium channel (1), wherein the heat exchange medium channel (1) is parallel to the axial direction of the reaction fluid channels (2). For a strong exothermic reaction process with high risk, stable process parameter control and passive intrinsic safety level improvement can be realized.

The invention relates to the technical field of petroleum drilling safety, in particular to a safe monitoring and protection device for drilling and an intelligent protection system of the safe monitoring and protection device. The safe monitoring and protection device for drilling comprises a data acquisition unit, a control processing unit and a safe protection execution unit; the control processing unit comprises an PLC (programmable logic controller) and an industrial personal computer, the PLC is connected with the industrial personal computer through a serial port; various kinds of sensors of the data acquisition unit acquire on-site operation data and transmit the data to the PLC and the industrial personal computer in real time; the safe protection execution unit comprises a pumping pressure protection mechanism and a runner wagon protection mechanism; a pressure sensor mounted on a vertical pipe or a slurry pump, a winch sensor mounted on a winch barrel and a weight transducer mounted on a deadline anchor output signals to be connected with the PLC; the PLC is in control connection with the pumping pressure protection mechanism and the runner wagon protection mechanism. According to the safe monitoring and intelligent protection device for drilling, the safe protection execution unit comprises a pumping pressure protection sub-system which mainly adopts an active response type safe protection method, and when pumping pressure reaches a set protection value, the pump stops firstly and then pressure relief is performed.

The present invention discloses an on-machine measuring device and measuring method applicable to energetic rotating parts, and belongs to the technical field of composite material machining. The measuring device comprises a suction cup for adsorbing a workpiece, a table holder, a measuring instrument, an adapter, and a stylus; the table holder is arranged on a numerically controlled machine tool;the execution end of the table holder can flexibly clamp the measuring instrument in vertical and horizontal directions; the stylus comprises a vertical stylus and a horizontal stylus; the measuringinstrument can be provided with the vertical stylus and the horizontal stylus through the adapter; and the vertical stylus and the horizontal stylus are both in centering contact with the workpiece and are in the same plane. The method of reference transformation and error separation can be used to measure the three characteristic dimensions of the outer diameter, the inner hole and the height; and multi-point synchronous measurement can be used in the measuring device to realize the in-situ measurement function independent of the feed accuracy of the machine tool. According to the measuring device and measuring method provided by the present invention, based on the mature mechanical cutting technology of energetic materials, the shortcomings of the prior art are overcome, and an automaticand accurate in-situ measuring method with functional integration and convenient operations is provided.

The invention discloses an automatic alignment tool suitable for machining energetic materials. The automatic alignment tool comprises a cutter bar and a roller, and is characterized in that the sideportion of the tail end of the cutter bar is provided with the roller in a threaded fastening manner; an outer ring of the roller is an execution part for precise alignment operation; a dial indicatoris arranged at the bottom of the execution tail end of the cutter bar in a threaded fastening manner; and a measuring center of the dial indicator is in centering contact with a bearing outer ring ofthe roller. The automatic alignment tool is suitable for the automatic application of turning-type workpiece turning, clamping and positioning processes, and provides a reliable key technical supportfor near-field unmanned requirements of PBX material processing. The automatic alignment tool suitable for machining the energetic materials has the advantages of being simple in structure, convenient to control, low in cost, capable of being used as a machine tool accessory, etc. Moreover, no additional power is needed, and dangerous sources like heat, electricity and power are prevented from being introduced, so that the intrinsic safety level of the machining of the energetic materials and the integration reliability of an automatic unit system can be effectively improved.

According to the technical scheme, the automatic fire extinguishing system is characterized by comprising a central control module, an environment temperature monitoring module, a communication module, a flame monitoring module, an automatic fire extinguishing device and an outer end server, the environment temperature monitoring module is used for collecting the nearby environment temperature in real time, and the communication module is used for communicating with the central control module; the flame monitoring module is used for capturing a flame signal, setting a flame time monitoring threshold value, and feeding back the flame signal to the outer end server when the duration time of the flame signal exceeds the flame time monitoring threshold value; the central control module is used for receiving the environment temperature signal and the flame signal, and when the environment temperature signal and the flame signal coexist, the central control module sends a fire extinguishing signal to the automatic fire extinguishing device; the automatic fire extinguishing device performs fire extinguishing operation according to the fire extinguishing signal, and the automatic fire extinguishing system can integrate various monitoring and realize integrated monitoring operation, so that the effect is greatly improved, and the automatic fire extinguishing system can be repeatedly used.

The invention relates to a subsection intelligent controller for an underground electric locomotive string, which belongs to the technical field of controller structures and comprises a control switch. The input end of the control switch is connected with a power supply, a Hall current transformer is arranged between the power supply and the control switch, the control switch comprises a digital logic circuit and a transistor IGBT, the output end of the IGBT is connected with the string, a gate pole of the IGBT is connected with the output end of an oscillator and a rail connected with the ground, the output end of the oscillator is connected with an inductor which is connected with the string, a capacitor is installed in a locomotive on the rail, and the capacitor is connected with the string through an electric arc. The subsection intelligent controller is reasonable in circuit design and capable of shrinking string electrification range as much as possible, shortens string electrification time and greatly reduces accident incidence.