8results about How to "Meet explosion-proof requirements" patented technology

This application discloses an intrinsically safe explosion-proof miniature camera system, belonging to the field of explosion-proof cameras. This system includes a core tube, an intrinsically safe camera, an intrinsically safe light source, mounting components, an intrinsically safe power supply, and an intrinsically safe monitoring platform. The advantages and effects of this invention are: This invention can be used in flammable and explosive environments, with a reliable installation method and an intrinsically safe light source. It can operate normally in dark environments and will not cause an explosion due to the camera's application, greatly reducing economic losses, lowering risks, and ensuring personnel safety during production.

This invention discloses a composite navigation explosion-proof logistics robot and its operating method, belonging to the field of logistics equipment technology. It can be used for the transfer of hazardous chemicals in flammable and explosive production environments, achieving high-precision and high-reliability autonomous operation through laser SLAM and barcode scanner sensors. It features a dedicated quick-change explosion-proof battery box with a sliding push-in and lateral locking mechanical interface. Battery replacement is simple: just pull out the quick-release pin, remove the pressure block, and pull out the battery box—the entire process takes only a few minutes. This eliminates the need for prolonged charging stops, allowing the robot to perform transfer tasks almost continuously and uninterruptedly, significantly improving the overall utilization rate of equipment in high-intensity, continuous production logistics scenarios.

The application provides an explosion-proof elevator car door lock device and a control method. The device comprises a door blade bottom plate, a mechanical and electrical interlocking assembly, a positioning assembly, and a door machine bottom plate. The mechanical and electrical interlocking assembly comprises a door blade arm, a lock hook, and a hook seat. The lock hook has a first anti-static structure and / or the hook seat has a second anti-static structure. One of the lock hook and the hook seat is provided with an electrical switch, and the other is provided with an electrical contact. The current of the electrical contact is less than or equal to 0.2 A, and the voltage of the electrical contact is less than or equal to 48 V. The hook seat is arranged on the door machine bottom plate, and the lock hook is rotatably arranged on the door blade bottom plate and connected with the door blade arm. One of the door blade bottom plate and the door machine bottom plate is provided with a positioning seat, and the other is provided with a first rotating piece and an elastic piece. The first end of the first rotating piece has a third anti-static structure. The second end of the first rotating piece is connected with the elastic piece. The elastic piece is used to abut the first end of the first rotating piece against the positioning seat when the mechanical and electrical interlocking assembly is locked. The application has high installation performance.

The invention discloses a winding drum with a built-in motor and an external small-tooth-difference speed reducer. The winding drum comprises the motor, a motor connecting frame, a left supporting seat, a right supporting seat, a winding drum shell and the small-tooth-difference speed reducer. Wherein the motor connecting frame, the motor, the connecting flange and the planet carrier form a penetrating type main shaft which is arranged in the winding drum shell and supported between the left supporting seat and the right supporting seat; the small-tooth-difference speed reducer comprises a center shaft, an eccentric sleeve, a planet wheel, an inner gear ring, a planet carrier, a plurality of bearings and a plurality of sealing pieces. Left and right supporting discs are arranged at the two ends of the winding drum shell and installed on the penetrating type main shaft. The motor is internally arranged, the axial size of the winding drum is shortened, and the roadway and chamber excavation cost is reduced; the small-tooth-difference speed reducer reduces the size of the motor and increases the gap between the motor and the winding drum shell, so that heat dissipation is facilitated; and the speed reducer is externally arranged and is designed in a detachable manner, so that the small-tooth-difference speed reducer can be quickly detached and is convenient to maintain. The winding drum with the built-in motor and the external small-tooth-difference speed reducer has the advantages of being good in heat dissipation performance, large in reduction ratio, simple in structure, short in axial distance, convenient to install, large in reduction ratio and the like.

The utility model belongs to the technical field of industrial automation measurement and control, and discloses an isolation type thermal resistance temperature signal conditioning system, which comprises a constant current source circuit; an amplification circuit; a VF conversion circuit; an FV conversion circuit; a low-pass filter circuit; and a linearization circuit. According to the utility model, the instrument amplifier with a high common-mode rejection ratio is adopted to suppress common-mode noise, the hardware filtering design is optimized, multi-stage low-pass filtering is adopted to eliminate power frequency harmonic waves, and a mirror image constant current source is adopted to enhance the stability; a reverse protection circuit is added in a double-TVS diode clamping mode, and a wide input voltage range power supply chip is properly selected. VF / FV conversion time sequence control is adopted, a scheme of dynamically adjusting cut-off frequency is adopted, filtering parameters are automatically switched according to a signal variable rate, and noise suppression and response speed are balanced.

The application discloses a non-methane total hydrocarbon detection device, which comprises a first mounting chamber, a gas chromatograph arranged in the first mounting chamber, the gas chromatograph being used for qualitative and quantitative analysis of a multi-component mixture; a second mounting chamber, a hydrogen-air integrated machine arranged in the second mounting chamber, the hydrogen-air integrated machine being connected with the gas chromatograph through a pipeline and providing hydrogen and air for a detector in the gas chromatograph; and a third mounting chamber, a pretreatment system arranged in the third mounting chamber, the pretreatment system being connected with the gas chromatograph through a pipeline and providing driving gas and a positive pressure gas source for the gas chromatograph. The scheme of the application effectively improves the integration degree by integrating the gas chromatograph, the hydrogen-air integrated machine and the pretreatment system in independent mounting chambers in the detection device. In addition, the gas chromatograph is arranged in an independent box body, and thus it is not necessary to externally arrange an explosion-proof house, and the explosion-proof requirement of an explosive place such as a petrochemical plant can be directly met.

The explosion-proof frequency converter device easy to maintain comprises an explosion-proof shell reactor, a rectification assembly, a capacitor assembly, an inversion assembly and a machine core, and is characterized in that a water cooling door is arranged on the front wall of an explosion-proof shell, a cooling water channel is arranged in the water cooling door, and the rectification assembly, the capacitor assembly and the inversion assembly are fixed on the inner surface of a water cooling plate from bottom to top. The machine core is fixed above the rectification assembly, and the electric reactor is fixed in the explosion-proof shell; and an intrinsic safety man-machine interaction screen is arranged on the front wall of the explosion-proof shell. The explosion-proof frequency converter device easy to maintain is suitable for being used in a dark coal mine with a narrow space, and the explosion-proof frequency converter is convenient to overhaul, maintain and maintain. Through the arrangement of the maintenance side door, after the maintenance side door is opened and a machine core cable is unloaded, the water cooling door is opened to maintain quick-wear parts such as an IGBT, a rectifier bridge, a fusible core and the like. By arranging the intrinsic safety man-machine interaction screen, an anti-explosion keyboard is omitted, and man-machine interaction is more convenient.