82results about How to "Improve production safety level" patented technology

The invention relates to an extraction method for early failure sensitive characteristics based on ensemble empirical mode decomposition (EEMD) and wavelet packet transform. The extraction method for the early failure sensitive characteristics based on the EEMD and the wavelet packet transform includes the following steps: (1), collected original vibration signals of mechanical and electrical equipment are decomposed according to the EEMD, white noise is added, and intrinsic mode function (IMF) components are obtained through decomposition; (2), the sensitive IMF components closely related to failure are chosen, and other irrelative IMF components are ignored; (3), the sensitive IMF components chosen through step (2) are decomposed in an orthogonal wavelet packet mode, and a wavelet coefficient of each node is obtained; and (4), envelopes are extracted from the obtained wavelet packet coefficients by adoption of the Hilbert transform and the Fourier transform, power spectrums are calculated, the power spectrum corresponding to each wavelet packet coefficient is obtained and serves as the early failure sensitive characteristic , and the sensitive characteristics are automatically obtained. Self-adapting signals can be decomposed, the sensitive characteristics can be convenient to obtain automatically, diagnosis precision and speed are improved, and a mechanical and electrical system can be diagnosed quickly, accurately and stably. The extraction method for the early failure sensitive characteristics based on the EEMD and the wavelet packet transform can be applied to the field of mechanical and electrical equipment failure diagnosis.

The invention relates to a safety production cloud service platform for industrial and mining enterprises, which is characterized by comprising a safety cloud service platform portal subsystem, a system management and related tool set developing subsystem, an application service layer subsystem, virtual resource layer subsystem, a platform service support layer subsystem, an access and adaptation layer subsystem, a safety service resource subsystem and infrastructure service support layer subsystem.

Disclosed is a data computing system of a safety production cloud service platform for a mining enterprise. Data management equipment corresponds to a cloud data computation module. The cloud data computation module is used for calling data collected in real time and stored in a cloud data storage pool, respectively computing characteristics of a mining system according to public relations of the mining system, establishing a universal data computing and analyzing model, and computing device performance, loading capability, working efficiency, safety degree and environmental parameters. The data computation module can be flexibly added and set, and corresponding computed value can be obtained by updating the data computation module.

The invention discloses a synchronous concurrent multi-channel constant deceleration safety braking system for a mine hoist. The synchronous concurrent multi-channel constant deceleration safety braking system comprises braking loops consisting of hydraulic systems, constant deceleration closed-loop electrical control devices and detection feedback devices; the braking system comprises at least two parallel independent braking loops; the same constant deceleration set point command signal is input to the constant deceleration closed-loop electrical control device of each independent braking loop, the constant deceleration closed-loop electrical control device of each independent braking loop receives the same speed feedback signal, and a difference value obtained after the speed feedback signal is compared with the constant deceleration set point command signal serves as an input command of each independent braking loop to control the braking loop; each independent braking loop outputs a hydraulic medium to the same executive component; when any one or a plurality of independent braking loops work, the braking system works. The invention also discloses a safety braking control method for the mine hoist based on the system, so that any one or a plurality of braking loops in the effective working conditions output the hydraulic medium to the executive component to execute hoist drum braking work, and the safety braking reliability is improved.

The invention discloses a data-driven complex electromechanical system service quality state evaluation method. Taking DCS state monitoring data and system service management data reflecting the system service quality state as the basis and depending on an information fusion theory, the data-driven complex electromechanical system service quality state evaluation method can perform real-time evaluation and early warning on the complex electromechanical system service quality state of an enterprise, and can perform early warning prevention on possible accidents in advance, and can assist scientific maintenance and repairing so as to improve the safety production level of the enterprise.

The invention discloses a dual-setting value constant torque secondary braking control system of a mine hoister, which is designed to solve the situation that the existing constant torque secondary braking mode cannot cope with the variation of loading directions of the hoister. The system comprises a hydraulic pressure source, a directional control valve and a dual setting valve constant torque secondary braking hydraulic circuit, wherein the hydraulic pressure source comprises a pump and is used for supplying pressure oil to a hydraulic cylinder of a disc brake (3) during the period of the normal working mode; the directional control valve is arranged between the hydraulic pressure source and the hydraulic cylinder of the disc brake so as to realize the switching between the normal working mode and the safe braking mode of the hydraulic circuit; the dual setting valve constant torque secondary braking hydraulic circuit switches to a corresponding safe braking hydraulic circuit according to operational state signals of hoisting or lowering for a hoisting system, provided by an electronic control system, and selects an appropriate braking oil pressure value corresponding to the operational state of the hoisting system so as to brake the roller. The dual-setting value constant torque secondary braking control system of the mine hoister can preferably meet the safe braking requirements of the mine hoisting system under various conditions, thereby improving the braking performance and safety performance of the mine hoisting system.

The invention discloses a precaution analysis system for a distribution line and an analysis method. The analysis system and analysis method are characterized by comprising gloves, a vibrator, a somatosensory device, a host machine and a display screen; the host machine is respectively connected with the gloves, the vibrator, the somatosensory device, and the display screen; the gloves are data gloves and internally provided with a temperature sensor and a humidity sensor which are used for sensing hand temperature and humidity data; the vibrator generates an impulse vibrating signal when wrong operation is happened, stimulates trainees and enhances the training effect; the somatosensory device catches movement action of human body, and displays corresponding operation action of a virtual person on the display screen. The precaution analysis system can realize interactively, lively and vividly staff safety training, and improve the electrical safety production knowledge and skill training quality.

The invention discloses a flow line magnesium electrolysis production method. In the method, a head cell (1), a melt pipeline (2), an electrolysis cell (3) and a tail cell (6) are utilized; and the head cell (1), the electrolysis cell (3) and the tail cell (6) are connected in series through the melt pipeline (2) to form a closed cycle magnesium electrolysis production method. By adopting the method, the defect that the conventional magnesium electrolysis cell can only be operated independently is overcome, and centralized charging and centralized magnesium production of a magnesium electrolysis process are realized. The labor intensity of workers is reduced, and the frequency of conveying high-temperature melt through a crown block in a workshop is greatly reduced, so that the safety production level is improved.

The invention discloses a stress concentration-based outburst risk identification method for a coal roadway tunneling working surface and belongs to the technical field of coal mine safety. The methodaims at solving the problem in the prior art that the outburst risk of the coal roadway tunneling working surface cannot be judged reasonably in the construction process. According to the method disclosed by the invention, main factors which influence the geological environment and the mining disturbance of the coal roadway tunneling working surface are quantified by adopting the stress concentration or superposition analysis method. A method for judging the stress concentration risk of the coal and the outburst risk of the gas is provided. Meanwhile, an important technical support is provided for the judgment of outburst risk-related stress concentration or superposition areas, and the outburst risk prevention of coal roadway tunneling.

The invention discloses a sealed wet spraying machine. The sealed wet spraying machine comprises a cylinder body, a material bin hopper, spraying material bins and a driving mechanism, wherein each spraying material bin is provided with a gas inlet and a spraying material outlet; a piston rod extending into the cylinder body is connected to the driving mechanism; material pushing assemblies and anintermediate sleeve are installed on the piston rod; aggregates entering the cylinder body through the material bin hopper can enter one side of the cylinder body at intervals through the intermediate sleeve; and the piston rod can move linearly in the cylinder body under the drive of the driving mechanism, so that the aggregates enter one of the spraying material bins through the material pushing assemblies. The sealed wet spraying machine has the advantages that compressed air in the spraying material bins is kept sealed with a concrete hopper, simultaneous feeding and spraying operations are realized, the working efficiency and the uniformity of concrete mixing are greatly improved, the structure design is skillful the occupied space is small, the maintenance and operation are convenient, the construction level and quality of support are greatly improved, the safety production level is greatly improved, and the construction site environment is greatly improved.

The invention provides a mining explosion suppression moving camera-shooting system. The system includes: a rail, a suspending piece, a drive assembly, a moving trolley, a tank chain, a suspending arm, a camera-shooting instrument, explosion suppression travel switches, and a controller, wherein, the drive assembly includes a motor, a speed reducer, a drive shaft, a driving chain wheel, a driven chain wheel, a drive chain, a tightening screw, a chain supporting shaft, and a chain support; the suspending piece is connected fixedly to the rail and is used for installation of the rail 1; the tank chain and the suspending arm are connected fixedly to the moving trolley respectively; the controller controls the drive assembly, to drive the moving trolley to realize leftward and rightward linear motion, and correspondingly to drive the camera-shooting instrument to realize a leftward and rightward motion, thus moving camera-shooting function is realized; and the explosion suppression travel switches are configured to limit locations where the moving trolley moves in the leftward and rightward directions. The invention can be applied effectively to a particular explosion suppression usage environment of a coal mine, and can realize video monitoring in an environment where there is unattended operation of the coal mine, which improves effectively a safety production level of the coal mine, and the system of the invention has the advantages of simple structure, low cost and easy implementation and installation.

The invention discloses an infrared radiation quantification representing method for bearing coal rock damage evolution. By using the method, a maximum value in a coal rock infrared radiation variabletemperature matrix is taken as a threshold value used for bearing the infrared radiation change of coal rock caused by micro-element damage, the cumulative number of infrared radiation in a bearing coal rock damage evolution process is screened, and the infrared radiation quantification representing method for bearing coal rock damage evolution is constructed based on a continuous damage mechanics theory. Through monitoring infrared radiation data in real time, the real-time process of coal and rock mass damage evolution can be dynamically and accurately evaluated, a mine safety production level is improved and the stability and the precision of coal and rock mass monitoring in modern rock mechanics and an engineering field are increased.

The invention relates to a continuous production line and a continuous production method for an emulsified ammonium nitrate fuel oil explosive. The production line comprises a latex matrix continuouspreparation system, an ammonium nitrate fuel oil explosive continuous preparation system, continuous mixing equipment and an automatic filling system, material outlets of the latex matrix continuous preparation system and the ammonium nitrate fuel oil explosive continuous preparation system are connected with a material inlet of the continuous mixing equipment, wherein a continuous material outletof the continuous mixing equipment is connected with a material inlet of the automatic filling system, and the production method comprises the following steps of: simultaneously and continuously conveying the ammonium nitrate fuel oil explosive and the cooled latex matrix into the continuous mixing equipment for mixing, adding wood flour into the mixture, and continuously performing mixing to prepare the emulsified ammonium nitrate fuel oil explosive. Continuous production of the emulsified ammonium nitrate fuel oil explosive can be achieved, the production efficiency is high, the productivity is large, the automation level is high, no fixed operation post exists on the whole line, the number of operators is small, the production safety level is high, and due to the adoption of the continuous production mode, the product consistency is high, and the quality is stable and reliable.

The invention relates to a semi-automatic sorting cigarette carton shifting device capable of preventing cigarette cartons from sliding. The semi-automatic sorting cigarette carton shifting device capable of preventing cigarette cartons from sliding comprises a conveyer belt mechanism which is longitudinally arranged, wherein one supporting frame is arranged on each of the two sides of the conveyer belt mechanism, each supporting frame is provided with a transmission chain which is driven by a driving mechanism to rotate coaxially, and shifting rod mechanisms are arranged between the two transmission chains at intervals in the circular direction of the transmission chains, are used for shifting the cigarette cartons to make the cigarette cartons to move forward so as to be conveyed and go up or down in an arc manner. The semi-automatic sorting cigarette carton shifting device capable of preventing cigarette cartons from sliding can be conveniently used for shifting cigarette cartons for conveying.

The invention discloses a mining monitoring early warning anchor rod arranged in a rock wall. The anchor rod comprises a body and resistance strain gauges arranged on the body, the body comprises a rod body, a supporting plate and a screw cap, one end of the rod body extends into the rock wall, and the resistance strain gauges are uniformly arranged at the parts, extending into the rock wall, of the rod body; the resistance strain gauges are used for detecting the stress borne by different positions of the rod body, the supporting plate and the screw cap sequentially sleeve the portion, outside the rock wall, of the rod body, and the supporting plate is tightly attached to the rock wall; the screw cap is arranged on the outer side of the supporting plate; due to the screw cap, the rod bodyis fixed to the rock wall, a controller is arranged on the supporting plate, and the controller is connected with the resistance strain gauges. The stress state of the anchor rod can be monitored inreal time; when the anchor rod loses efficacy, people can quickly perceive and take corresponding measures to maintain the stability of a roadway support, casualties caused by improper supporting of aroadway are reduced, the safety production level of a mine is improved, and the safety of coal mine personnel and property is guaranteed.

The invention discloses a substation secondary loop break-make measuring instrument. The substation secondary loop break-make measuring instrument is used for measuring a live secondary loop of a substation; the substation secondary loop break-make measuring instrument comprises a central processing module, a voltage measuring module, a break-make measuring module and a program module, wherein thevoltage measuring module is used for performing voltage measurement on the secondary loop and electrically connected with the central processing module; and the break-make measuring module is used for performing break-make measurement on the secondary loop during no-voltage of the secondary loop, and the break-make measuring module is electrically connected with the central processing module. Thesubstation secondary loop break-make measuring instrument has the beneficial effects that 1, the security production level is improved, and when break-make test of the secondary loop is carried out in a running substation, serious consequences that electric components incorrectly operate, a power source is grounded and the like due to the fact that the live loop is accidentally touched are solved; and 2, the working efficiency is improved, through an integrated design scheme of voltage measurement and break-make test, the operation is easy, and the labor operation level of workers is improved.

The invention discloses an MVR mobile control system, which comprises an industrial panel computer, Internet, a cable wire, an Ethernet module, a PLC (programmable logic controller), a camera, a coaxial cable, a DVR (digital video recorder), a wireless router, a gain antenna and a wireless signal. The industrial panel computer receives a wireless signal sent from the gain antenna; the wireless router is accessed into the Internet; the PLC is additionally provided with the Ethernet module; the Ethernet module is accessed into the wireless router through the cable wire; the camera is accessed into the DVR through the coaxial cable; the DVR recorder is accessed into the wireless router through the cable wire; the wireless router is connected with the gain antenna through the coaxial cable; the gain antenna transmits signals to the industrial panel computer. The MVR mobile control system disclosed by the invention has the gain effects that the relying of MVR evaporation equipment on the number of operators is reduced; the system operation and running problem is directly monitored and treated by a process inspector; the enterprise automation level is improved.

The invention discloses aldoxime dehydratase and application thereof in catalytic synthesis of aromatic nitrile compounds, and belongs to the field of biological catalysis researches. The preparation method comprises the following steps: inserting an aldoxime dehydratase gene from Pseudomonas putida F1 into an expression vector, and constructing a recombinant expression plasmid; and introducing the aldoxime dehydratase into a host cell to construct a genetically engineered bacterium so as to realize efficient co-expression of the aldoxime dehydratase. Through the catalytic action of the engineering bacteria, the aim of efficiently producing the aromatic nitrile from the aldoxime compound can be achieved. The aldoxime dehydratase has the advantages of good catalytic stability, high catalytic activity and the like, is expected to become an excellent industrial catalyst for preparing aromatic nitrile by a biological method, and promotes upgrading of a nitrile compound synthesis process.

The invention provides a coal mine driving working face gas outburst obstruction system, and belongs to the technical field of mining safety. The coal mine driving working face gas outburst obstruction system comprises a multi-modal signal sensor, a signal integrated processor, a sound-light alarm device, a starting switch, a gas generator, a semi-flexible air bag and a power supply. The multi-modal signal sensor detects parameters including temperature, humidity and gas concentration in the driving working space, signals are transmitted to the signal integrated processor for processing in real time, when signals are abnormal, the signal integrated processor outputs an early warning signal to the sound-light alarm device and the gas generator, the gas generator generates a lot of inert gas quickly to make the air bag inflate, the tunnel cross-section is obstructed, and the air bag plays a role in obstructing and buffering eruption of gas and coal rock solids towards the digging space. The coal mine driving working face gas outburst obstruction system protects life safety of workers in first time in case of emergency, and plays a buffering role in the coal and gas outburst accident, and can buy people time to escape safely.