492 results about "Intrinsic safety" patented technology

The invention discloses a hanging basket motion control method and system based on operation state recognition, particularly relates to the technical field of bridge construction automation, and is used for solving the problem of poor synchronous control of hanging basket movement. According to the method, working conditions are accurately recognized through multi-source sensing data fusion and a finite-state machine, servo system parameter self-adaptive setting is achieved based on working condition parameter mapping, and an anti-interference movement track is generated by adopting a model prediction control algorithm fusing pose feedback and wind load feedforward; walking synchronization and platform stability are achieved through cross coupling control and posture closed-loop fine adjustment, emergency response is provided through the independent safety guarding thread, control and protection double closed loops are formed, and therefore the motion precision, the anti-interference capacity and the intrinsic safety level of the hanging basket under the variable-load and strong-disturbance working conditions are effectively improved, and the safety of the hanging basket is improved. And the energy consumption and the mechanical vibration frequency in the moving process of the hanging basket are reduced.

The invention discloses a thermal power plant limited space operation safety and environment multi-parameter monitoring system, and relates to the technical field of operation safety monitoring. A structure parameter model is constructed based on a space volume structure, a gas exchange path, a risk type and an operation position, and multi-parameter sensing nodes are configured; extracting abnormal fluctuation characteristics of the environmental parameters through edge computing nodes; a gas flow model and a heat distribution model are combined to carry out space-time inversion, a risk source is positioned, a space risk heat map is dynamically generated, the position and action state of an operator can be obtained in real time, the exposure probability is calculated, and automatic identification and graded early warning of a high-risk area are realized; the system has high-precision, low-delay and full-coverage monitoring capability, and the intrinsic safety of limited space operation of the thermal power plant is improved.

The utility model discloses an intrinsic safety power supply circuit and a fuel electrochemical oxygen analyzer. The intrinsic safety power supply circuit comprises a first MOS tube, a first capacitor, a second capacitor, a first resistor, a first Schottky diode, a first Zener diode and a second Zener diode, the power supply module of the fuel electrochemical oxygen analyzer comprises the intrinsic safety power supply circuit and further comprises a sensor module, an AD conversion module, a key module, a single chip microcomputer module, an analog output module and a display driving module which are connected with the power supply module, and the single chip microcomputer module is connected with the AD conversion module, the key module, the analog output module and the display driving module. The sensor module is connected with the AD conversion module, and the analog output module is connected with external equipment; the fuel electrochemical oxygen analyzer adopts the intrinsically safe power supply circuit to limit the working current and voltage in the circuit so as to control the power consumption of the whole machine, so that explosion prevention is realized, and the fuel electrochemical oxygen analyzer can measure the oxygen concentration in a flammable and explosive environment.

The invention discloses an amino mixed fuel explosion characteristic visualization and explosion suppression coordinated regulation and control system and method, and the system comprises an explosion suppression device which is disposed in a combustion chamber and is in communication connection with a holographic monitoring device and an explosion overpressure real-time prediction model. A graded explosion suppression scheme is set according to the safety early warning grade, so that active intervention of explosion suppression intensity and mode matched with combustion or explosion development stages with different intensities in the combustion cavity is implemented. Therefore, visualization of the mixed gas combustion and explosion dynamic process under the multi-parameter coupling condition can be achieved, and the comprehensiveness and reliability of combustion and explosion research are remarkably improved; through real-time monitoring and intelligent prediction of the explosion process, the explosion process in the device can be rapidly started, the explosion suppression response can be optimized, the explosion development can be suppressed, the integrity and operation safety of an experiment system can be guaranteed, and the intrinsic safety and the system protection capability of the experiment process can be effectively enhanced.

The invention discloses a deep mine rockburst risk dynamic assessment and active prevention and control system, and relates to the technical field of rockburst risk assessment and prevention and control. Comprising a data acquisition module, a preprocessing module, a dynamic evaluation module, an active prevention and control decision module, a prevention and control execution module, a system monitoring and feedback module and a data storage and authority management module, is interacted through a mining intrinsic safety type communication network, adapts to underground working conditions and supports 24-hour operation; the data acquisition module deploys multiple types of monitoring equipment, and dynamically adjusts frequency encryption transmission; the preprocessing module filters noise and interpolates to ensure data integrity; the dynamic evaluation module updates the risk level in combination with indexes and algorithms; the decision-making module matches the prevention and control scheme and needs to be audited; the execution module is in butt joint with equipment control parameters; the monitoring module measures the state calculation effect; and the storage and authority module performs dual-backup, and performs hierarchical authorization trace leaving. According to the method, the problems of lag and low efficiency of traditional rockburst prevention and control are solved, evaluation accuracy and prevention and control efficiency are improved, risk closed-loop management is realized, safety and cost are balanced, and mining safety is guaranteed.

The invention discloses a mining air volume monitoring and control system, which relates to the technical field of coal mine safety ventilation and comprises a plurality of intrinsically safe sensors, at least one group of intrinsically safe control boxes, a controller and a power supply, the GQQ5 smoke sensor is connected with the sensor through a flame-retardant communication cable for a coal mine or in an infrared correlation mode to realize data convergence and instruction issuing, and the at least one intrinsic safety type base station is connected with a ground control center through a communication optical cable to support TCP / IP protocol transmission monitoring data. Dust concentration response is dynamically analyzed in combination with the wind speed change trend, linkage control over wind speed and dust concentration is achieved, the opening degree of an air door can be automatically adjusted or a spraying device can be controlled according to the dust raising trend, the underground dust treatment effect is effectively improved, and the method has the advantages of being high in practicability and improving the automation level of ventilation dispatching.

The invention relates to the technical field of electric digital data processing and energy storage system safety control, in particular to an optical storage and charging integrated station energy storage system. Comprising a data acquisition module which is used for acquiring a state feature vector of an energy storage system, planned scheduling power of an upper-layer energy management system, an external power grid interference index, and a real-time safety state and an economic value index of a battery management system in real time; the risk assessment module is used for generating a predictive risk score; the decision threshold module is used for calculating a dynamic intervention threshold; the arbitration decision module is used for generating a negative sign; the instruction correction module is used for determining a derating factor in response to the override mark and generating a correction scheduling instruction; or when the negative sign is not generated, outputting the planned scheduling power as a corrected scheduling instruction. According to the invention, early warning and active prevention of the potential thermal runaway risk are realized, and the intrinsic safety level and the operation reliability of the system are obviously improved.

The invention relates to a low-concentration gas intrinsically safe combustion device, which relates to the technical field of coal resource utilization and comprises a safe ignition unit, a multi-stage backfire prevention unit, a multi-blow-off prevention unit, a combustion chamber, a control unit and an explosion venting unit. The safety ignition unit adopts a staged ignition mode, and the 100% ignition success rate is achieved through a high-energy igniter and a combustion starter; the anti-backfire unit forms three-stage protection through a micro-channel, a quick shut-off valve and an anti-detonation flame arrester, and flame returning is blocked; the anti-blow-off unit is combined with a high-heat-insulation labyrinth type combustion chamber by means of the entrainment effect of a swirler and a flame retention module, so that flame is stable and does not break away; the control unit achieves automatic interlocking control through various sensors, and the explosion venting unit conducts directional explosion venting during overpressure. According to the device, the low-concentration gas with the concentration lower than 30% is subjected to intrinsic safety combustion, and the risks of backfire, blow-off and explosion can be avoided.

The invention discloses a coal mine intrinsic safety variable structure open space robot catastrophe detection system, which belongs to the technical field of catastrophe robots and comprises a coal mine intrinsic safety variable structure open space robot consisting of a rack unit, a rotor wing mechanism, a battery unit, a control unit, an airborne sensor unit and the like. The invention further discloses a coal mine intrinsic safety variable structure open space robot catastrophe detection method. The method comprises the steps of collecting underground coal mine disaster photos, making a data set, building a YOLO10m network model and building an underground coal mine catastrophe detection system. And finally, a YOLO10m algorithm is improved, a TSample module is constructed, an up-sampling module in the neck network is replaced, the number of model parameters is reduced, the operation load is reduced, and a low-illumination loss function is provided to optimize the detection precision of the network on the underground coal mine catastrophe, so that the underground coal mine fire, flood and roof catastrophe are detected in the underground coal mine low-illumination environment.

The invention relates to the technical field of aluminum processing production safety, and provides an aluminum processing deep well casting molten aluminum leakage identification and early warning system and method.The system comprises a leakage identification subsystem, a linkage circuit is formed by arranging special aluminum wires at an outlet of a crystallizer, and instant leakage alarm and leakage point positioning are achieved; the leakage rate judgment subsystem is used for judging the leakage rate of the molten aluminum; and the control terminal is used for simultaneously receiving and processing the information of the leakage identification subsystem and the leakage rate judgment subsystem and giving an emergency processing instruction. Through double-judgment cross validation of aluminum conductor leakage triggering and temperature sensing data, the molten aluminum leakage judgment accuracy is remarkably improved, the method can stably adapt to the high-temperature, humid and high-noise environment of deep well casting, early warning lag and positioning fuzziness are effectively eradicated, the risk of explosion accidents caused when molten aluminum encounters water is practically reduced, and the service life of the molten aluminum is prolonged. And reliable support is provided for deep well casting intrinsic safety.

The utility model discloses an oil online monitoring system, and belongs to the technical field of oil monitoring. The oil online monitoring system comprises an intrinsic safety cavity, an explosion-proof type through-wall terminal and an explosion-proof cavity, the intrinsic safety cavity is provided with a pipeline and an intrinsic safety oil monitoring sensor, and the intrinsic safety oil monitoring sensor is used for monitoring oil in the pipeline; one end of the explosion-proof wall-through terminal is in communication connection with the intrinsic safety oil monitoring sensor through the explosion-proof wall-through terminal; the explosion-proof cavity is provided with a data acquisition board, an intrinsic safety power supply and a non-intrinsic safety power supply, the non-intrinsic safety power supply is used for supplying power to the data acquisition board, and the intrinsic safety power supply is used for supplying power to the intrinsic safety oil monitoring sensor; and the data acquisition board is in communication connection with the external terminal equipment and the other end of the explosion-proof wall-through terminal, so that explosion-proof protection is realized, the structure is prevented from being damaged, and the safety and reliability are improved.

The invention relates to the technical field of safety control of mining equipment, in particular to a mining intrinsic safety type multi-mode cooperative control system. The system comprises a main controller, a sensor module, a voice alarm module and an equipment execution unit. According to the invention, by setting a hierarchical protection shielding function, an effect of accurately preventing and controlling major safety risks is achieved, based on a dual judgment mechanism of a comprehensive risk coefficient and an operation risk index, an early warning-alarm-emergency response three-level protection system is systematically constructed, and when risks of equipment temperature abnormity, speed overrun and the like are detected, the system can give an alarm. The method comprises the following steps: firstly, triggering voice alarm and reserving emergency disposal time, and automatically shielding a non-key protection function when the risk is upgraded to a system-level emergency state, thereby avoiding economic loss caused by whole-line production halt, breaking through the limitation of once-by-once stopping of a traditional safety system, and remarkably improving the intrinsic safety level of mine production.

The application provides an intrinsic safety power transient energy testing device and method, and relates to the technical field of intrinsic safety power. The device comprises a load module, a control unit, a control terminal and a detection unit. The load module has at least one load, and each load has a plurality of load units. The control unit is connected with the load module through an adaptive interface module, and is used for selecting the connected load unit. The control terminal is connected with the control unit through a communication interface, selects a load unit mapping figure through a graphical user interface, and further selects the corresponding load unit through the control unit, so as to load the selected load unit to the measured intrinsic safety power. The detection unit is used for connecting and detecting the measured intrinsic safety power loaded with the selected load unit, and is connected with the control terminal to upload the detection result to the control terminal. The device changes the test environment by selecting different loads, so that the test of the intrinsic safety power transient energy is more comprehensive.

The invention discloses a forced measurement system for an underwater hydraulic lifting stage and a digital control method. The forced measurement system comprises one or more forced measurement units; the forced measurement unit operates in a torque control mode, actively applies a constant preset pulling force to the measurement rope, and detects and measures the rotation angle or the number of turns of the winding drum in real time so as to calculate the lifting displacement of the stage; the hydraulic driving unit is used for driving the stage to lift; and the central control unit is in signal connection with the forced measurement unit and the hydraulic driving unit, and is used for receiving the lifting displacement data and outputting a control signal to the hydraulic driving unit according to a preset target position and a movement track so as to realize closed-loop control on the stage position. Through an external forced measurement unit and a torque control mode, non-contact high-precision direct measurement is realized, the water immersion of a measurement element is fundamentally avoided, the waterproof problem is solved, and the intrinsic safety and long service life of the system are ensured.

1. Name of the designed product: combined frequency starter (mine explosion-proof and intrinsically safe type). 2. Use of the designed product: used for controlling explosion-proof motor in coal mine. 3. Design points of the designed product: combination of shape and pattern. 4. Picture or photo best indicating the design points: front view.

The invention discloses a fault detection method for an explosion-proof and intrinsic safety type hybrid electric appliance switch based on artificial intelligence, and relates to the technical field of intelligent operation and maintenance of power equipment, and the method comprises the following steps: S1, synchronously collecting multi-modal sensing data during the operation of the hybrid electric appliance switch through a plurality of intrinsic safety type sensors synchronously driven by a unified clock source; the multi-mode sensing data at least comprises electrical sensing data and mechanical vibration sensing data. According to the fault detection method for the flame-proof and intrinsic safety type hybrid electric appliance switch based on artificial intelligence, through a multi-mode synchronous acquisition and deep fusion architecture, the technical problem that fault feature acquisition is incomplete and asynchronous under strict explosion-proof constraints is effectively solved. Through a processing mechanism of edge calculation and cloud collaboration, accurate capture and intelligent screening of electromechanical coupling features are realized, the accuracy and reliability of fault diagnosis are improved by combining dual verification and a confidence fusion decision model, and effective technical support is provided for early fault early warning.

The utility model discloses a gallium nitride output essential safety type power supply, including power supply body and bottom mounting plate, the casing bottom of power supply body is fixed with bottom mounting plate, still include guide and scatter mechanism, the guide and scatter mechanism includes top and exposes the groove, heat conduction silicon pad, double -faced wrong groove board, edge and exposes the groove, gantry clamping plate, lead touch piece, edge fin, bottom link and horn, through setting up guide and scatter mechanism and carry out heat dissipation improvement to the essential safety type power supply of gallium nitride semiconductor technology's application, and the top and exposes the groove of guide and scatter mechanism cooperation deep groove reduces the casing thickness of power supply body, and then combines heat conduction silicon pad and double -faced wrong groove board, forms the efficient heat conduction path and conducts heat dissipation outward, and simultaneously, the gantry clamping plate collocates lead touch piece and edge fin, constructs the multi -point three -dimensional heat dissipation surface of top surface and side surface formula, solves the casing heat dissipation blind area problem of power supply body, realizes the heat of power supply body and multi -point dispersion export.

The invention relates to an electrolytic hydrogen safe operation boundary construction and application method and system based on dynamic characteristic identification, and electronic equipment. The method comprises the following steps: acquiring actually measured dynamic response data of an electrochemical device under a dynamic excitation working condition; identifying real dynamic characteristic parameters through a system identification algorithm based on actually measured dynamic response data to replace idealized dynamic setting to construct a high-fidelity security model with a coupling sub-model; a high-fidelity security boundary is obtained based on high-fidelity security model simulation; operating parameters are collected in real time and compared with the high-fidelity safety boundary, and an instantaneous risk component is calculated; when the instantaneous risk component exceeds a safety control threshold, a power limit instruction is generated to perform closed-loop limitation on the input power. According to the method, the limitation of a traditional steady-state model is broken through, the transient out-of-limit risk can be accurately predicted and intervened, and the intrinsic safety of the electrolytic hydrogen system under the fluctuation working condition is greatly improved.

The invention relates to the technical field of mine lighting, in particular to an intelligent mining intrinsically safe LED lighting lamp strip and a lighting system.The lamp strip comprises an insulation assembly, a plug-in assembly and a lighting assembly, and the system comprises a production judgment module, a light attenuation judgment module, a lighting regulation and control module, a regulation and control detection module, a shadow judgment module and a shadow compensation module; the system predicts a high-dust working condition through vibration analysis and evaluates light attenuation by fusing dust concentration and coal rock absorbance; regulating and controlling the brightness and spectrum of the lamp strip according to the evaluation result; the regulation and control effect is verified through closed-loop detection; identifying a dynamic shadow area based on the equipment pose and the light field distribution; and finally, in combination with the gas concentration safety constraint, performing safety-first local compensation or brightness-first overall brightening on the shadow area. The problems that instantaneous light attenuation caused by cooperation of dust outbreak at the moment of cutting and strong light absorption of a coal wall cannot be effectively handled, and dynamic shielding shadow caused by movement of a huge machine body of mining equipment cannot be effectively handled are solved.

The invention discloses a mining intrinsic safety type monitoring substation installation structure which comprises a hanging seat and a hanging piece, the hanging seat is fixed to a roadway side wall through an installation foundation, an installation groove and a guide groove are formed in the hanging seat, the hanging piece is embedded into the hanging seat through the installation groove, the guide groove is communicated with the installation groove, and the hanging piece is arranged in the installation groove. The size of the first end of the hanging piece is matched with the width of the installation groove, and the second end of the hanging piece is connected with a monitoring substation. The mining intrinsic safety type monitoring substation installation structure has the advantages of being rapid and efficient in installation and small in manpower burden.

The utility model provides a mining intrinsic safety type controller, comprising a housing which is provided with an accommodating cavity used for accommodating electrical elements; the air inlet pipe is provided with a through hole for air circulation, the air inlet pipe extends in the length direction of the shell and penetrates through the shell, so that the first end and the second end, oppositely arranged in the length direction of the air inlet pipe, of the air inlet pipe are both located outside the containing cavity, the part, located in the containing cavity, of the air inlet pipe is provided with air inlet holes communicating with the through hole, and the air inlet holes communicate with the containing cavity; the first end is provided with an air inlet mechanism, the second end is provided with a blocking mechanism, a filtering mechanism is arranged in the through hole and used for filtering air passing through the through hole, the exhaust pipe is arranged on the shell and provided with an exhaust hole communicated with the containing cavity, the exhaust pipe and the air inlet pipe are oppositely arranged in the height direction of the shell, and the exhaust pipe is located above the air inlet pipe. In this way, the external air is filtered through the filtering mechanism installed in the air inlet pipe, and then heat dissipation is conducted through the filtered air.

The invention discloses a fine tuning method, system and equipment for an electric power intrinsic safety analysis model based on knowledge distillation, and a medium, and belongs to the technical field of electric power safety analysis. The method comprises the following steps: collecting professional knowledge data in the field of electric power intrinsic safety analysis, and performing professional knowledge supervision fine tuning to obtain a distillation model; and guiding an output thinking process and a root cause based on problem description through the distillation model, and introducing a super model and a causal knowledge graph for evaluation to obtain an evaluation result. Through combination of knowledge distillation and the causal knowledge graph, the accuracy and interpretability of an electric power intrinsic safety analysis inference model are remarkably improved, the thinking process and the root cause of problem description are generated through the distillation model, output is evaluated by using the super model and the causal knowledge graph, the causal inference ability is enhanced, and the accuracy and the interpretability of the electric power intrinsic safety analysis inference model are improved. The problem that the causal relationship of a traditional model is fuzzy in complex power accident analysis is effectively solved.

The utility model belongs to the technical field of static elimination, and particularly relates to a portable static grounding device which comprises a grounding base. The top of the grounding base is fixedly connected with a fixed side plate; the fixed side plates are arranged on the two sides of the top of the grounding base; the top of the fixed side plate is fixedly connected with an output motor; the side wall of the fixed side plate is rotationally connected with a first gear; the output motor is connected with a first gear; in the working process, through mutual cooperation of a second rotating plate, a limiting sliding rail and a connecting rod, a limiting lantern ring is driven to move in a reciprocating mode, in the moving process of the limiting lantern ring, an electrostatic connecting wire can be regularly wound around the outer side of a winding roller, and therefore the neatness of the electrostatic connecting wire on the outer side of the winding roller is improved; by using the grounding base, the dead zone of the oil depot static electricity elimination device is covered, the oil depot static electricity elimination device is eliminated at any time, the operation is convenient, an ignition source is cut off from the source, the intrinsic safety of an oil depot is improved, and the portability of the whole device is improved.

The invention relates to the technical field of mine safety monitoring, and discloses a device and method for measuring mining-induced stress, temperature and water pressure of a mine, the device comprises a high-strength metal shell, a hollow connecting rod, a water pressure measuring unit, a strain measuring unit, a temperature measuring unit and a single through optical fiber, and the surface of the shell is provided with a spiral resin grouting channel; a mechanical occlusion structure is constructed through a solid resin entity, and rock mass displacement is equivalently transmitted to a shell. The temperature compensation fiber bragg grating is coated with a heat insulation coating, in-situ rigid coupling is achieved by injecting liquid resin into a grouting channel, the central wavelength peak value of each grating is obtained through the wavelength division multiplexing technology, the environment temperature variable quantity is extracted based on the temperature compensation fiber bragg grating, and therefore the thermally induced drift distance of the strain grating is deducted, and the compensated strain value is obtained. And inverting and outputting the in-situ three-dimensional mining-induced stress state by mapping the constitutive equation set. According to the invention, synchronous high-fidelity acquisition of multi-physics field parameters is realized, and the intrinsic safety characteristic and the electromagnetic immunocompetence are realized.

The invention discloses a safety monitoring management system for a mining explosion-proof lithium ion battery trackless rubber-tyred vehicle, which belongs to the technical field of mining explosion-proof mechanical equipment and comprises a comprehensive data acquisition module, a risk mode definition module, a working condition identification and inquiry activation module, a cross-subsystem interaction test module, a dynamic toughness map construction module and a decision execution module. According to the invention, an explosion-proof power supply formed by connecting single high-capacity battery cells in series and an integrated explosion-proof electric control architecture are adopted, a dynamic toughness map of a quantitative safety boundary is constructed by executing cross-subsystem special risk inquiry and mild interaction test, and a toughness adaptation and gradient guide strategy is implemented. According to the invention, the problems of insufficient monitoring depth of a traditional system and slope slipping risk in a gas environment can be solved, the intrinsic safety level, cruising ability and inspection efficiency of the vehicle are improved, and reliable support is provided for intelligent mine auxiliary transportation.

The invention is suitable for the technical field of automatic control of mining auxiliary transportation equipment, and provides an underground monorail crane predictive control method and system based on a digital road spectrum, and the method comprises the following steps: obtaining a position and a road spectrum; a parameter online identification step; a target speed dynamic correction step; a composite torque instruction generation step; a driving execution and braking cooperation step; the method has the beneficial effects that speed self-adaptive correction is realized through road spectrum pre-reading and parameter online identification, and the smooth torque is output in combination with composite predictive control, so that pure-electric-drive stable speed regulation of the monorail crane is realized. According to the scheme, instability slipping under complex working conditions is effectively overcome, the safety risk that mechanical braking intervention is triggered due to the fact that the speed is out of control is avoided, and the response speed, the operation stability and the intrinsic safety level of a whole machine system are remarkably improved.

This invention discloses a hydrogen-based electrical discharge machining (EDM) system, relating to the field of EDM. The system includes: a contact detection system for detecting the contact state between the electrode and the workpiece and outputting the contact detection signal to the machining control system; a detection switching system for switching between machining and detection modes, receiving switching commands from the machining control system, and connecting the electrode and workpiece to either the contact detection system or the EDM system; and a pulse voltage system for providing low-voltage pulse discharge energy. Compared with existing technologies, the advantages of this invention are: by comprehensively utilizing a special mechanical structure of a dual-slide stage, a rapid switching circuit, hydrogen as a reducing working medium, and low-voltage pulse capacitor discharge technology, this invention systematically solves the four inherent bottlenecks of traditional gas EDM: high voltage dependence, surface oxidation and degradation, servo return error, and process monitoring lag. Ultimately, it achieves high-precision, high-quality, high-efficiency, and inherently safe precision EDM.

The application discloses a solid rocket engine lining curing detection method based on a fiber Bragg grating, and comprises the following steps: S1, preparing a lining slurry according to process requirements, spraying or coating the lining slurry on an adiabatic surface according to engine technical index requirements, and feeding into a constant-temperature rotary curing furnace for constant-temperature rotary curing; S2, feeding a detection device into the engine, and placing the detection device on the lining surface; S3, acquiring grating sensor signal changes in a detection process by using a fiber detection system, and judging the lining curing state according to detection data and a data processing algorithm. The application has the advantages of small size, high precision, low cost and intrinsic safety, can effectively detect the physical characteristics such as strain, temperature and pressure of the structure, overcomes the defects such as large occupation area and high price of ultrasonic and infrared ray methods and equipment, and realizes in-situ and nondestructive detection of the lining curing state.

The utility model provides an intrinsic safety type mine smoke sensor. The intrinsic safety type mine smoke sensor comprises a mounting seat, a bearing seat, a protection assembly and a sensor body, a mounting notch is formed in the mounting seat, a splicing connector is arranged on the top surface of the bearing seat, and the top end position of the splicing connector is adjustably inserted into the mounting notch. The protection assembly comprises a connecting ring and a supporting ring, and the supporting ring is connected with the connecting ring through a cleaning roller brush. A rotatable protection pipe is further arranged in the protection assembly, a plurality of air inlets are formed in the protection pipe, and the outer side wall of the protection pipe makes contact with the cleaning roller brush. The sensor body is arranged in the protection tube, and the top end of the sensor body is connected with the bottom surface of the bearing seat. According to the intrinsic safety type mine smoke sensor, the position of the bearing seat can be flexibly adjusted, follow-up overhaul and maintenance can be conveniently carried out, the protection pipe can be regularly cleaned, and the air inlet is prevented from being blocked.

The utility model discloses a mining flame-proof and intrinsic safety type power line carrier communication monitoring substation, and relates to the field of mining equipment. The mining flame-proof and intrinsic safety type power line carrier communication monitoring substation comprises a communication monitoring substation body and further comprises an installation plate, and the communication monitoring substation body is fixedly installed on the side wall of a designated roadway under a mine through the installation plate; the protection plate is rotationally connected to the upper end of the mounting plate through a rotating shaft and is located above the communication monitoring substation body; according to the utility model, when a rock falls and hits the communication monitoring substation body, the rock can be buffered and guided to other positions, thereby preventing the rock from directly falling on the communication monitoring substation body, causing damage to the communication monitoring substation body, causing problems of short circuit and fire hazard in the communication monitoring substation body; the operation reliability and safety of the mining flameproof and intrinsic safety type power line carrier communication monitoring substation in a complex and dangerous underground environment are greatly improved.