12results about How to "Increased explosion safety" patented technology

The invention relates to the technical field of cables, in particular to an airtight cold-resistant low-smoke flame-retardant instrument cable used in an explosive environment, which comprises a protective sleeve, a cable body mechanism is arranged in the protective sleeve, the cable body mechanism comprises inner sheaths, and a plurality of inner sheaths are uniformly mounted in the protective sleeve at equal intervals. According to the invention, heat dissipated in the use process of the cable can be utilized to preheat the main body structure of the cable, so that the cold resistance of the cable is improved while internal heat dissipation is promoted; according to the invention, the structure of the cable is improved, the connection stability among the structures of the cable can be improved, the air tightness of the cable is effectively improved, the throttling effect of the heat insulation shell and the guide ring can be fully utilized, the flame retardance of the cable is improved, the cable can be better matched with the external environment, and the application range of the cable can be effectively expanded while the working stability of the cable is improved.

The invention discloses an explosion-proof infrared high-speed ball, comprising a first cavity, a second cavity and a third cavity; wherein a pitch rotation mechanism for driving the second cavity to realize pitch rotation is also arranged in the second cavity and the third cavity, the pitch rotation mechanism comprises a second motor arranged in the second cavity, a reduction transmission mechanism arranged in the third cavity, an inner transmission shaft transmission-connected between the second motor and the reduction transmission mechanism, and an outer transmission shaft transmission-connected between the reduction transmission mechanism and the second cavity, and the outer transmission shaft is rotationally connected to the outside of the inner transmission shaft, one end of the outer transmission shaft and the inner transmission shaft extends into the second cavity, and the other end extends into the third cavity; the device seals the motor in the second cavity to ensure the explosion-proof safety of the device, and arranges the transmission mechanism connected with the motor outside the second cavity, so that the second cavity for driving the camera to rotate and shoot is lighter in weight, smaller in size, and more sensitive when rotating and shooting.

The utility model discloses a kind of explosion-proof fan, including the casing of three-layer composite explosion-proof resin material and wind wheel, wherein outer layer carbon nanotube PEEK composite material effectively leads out static electricity, middle aluminium hydroxide flame-retardant layer prevents flame spread, inner layer ultra-high molecular weight polyethylene reduces friction spark risk.Electrostatic belt can effectively eliminate static electricity accumulation in transmission process, avoid static spark, improve explosion-proof safety.Fan is equipped with rotary electrostatic brush and ground copper wire to eliminate static electricity, and fire barrier is configured at air inlet to prevent flame propagation.Wind wheel blade is provided with tungsten-containing wear-resistant coating and zircon ceramic wear-resistant strip to avoid friction spark.Explosion-proof motor is built-in temperature sensor and vibration sensor, and stator winding adopts arc-resistant enameled wire.The utility model solves the problem of heavy weight and single protection of traditional fan through multiple explosion-proof design, with the characteristics of lightweight, superior explosion-proof performance, stable and reliable operation, especially suitable for flammable and explosive places such as petroleum and chemical industry.

The invention belongs to the technical field of explosion-proof POS machines, and discloses a method for solving the problem of the creep distance of a connector bonding pad of an explosion-proof POS machine, and the method comprises the specific steps: 1, firstly obtaining the pin spacing of a connector socket, taking the socket with the pin center point distance of 0.8 mm as an example, and taking the pin center point distance of 0.8 mm as an example; and at the moment, the worker judges that the equipment cannot meet the creepage distance requirement required by explosion prevention. According to the invention, the socket pins and the PCB pads are fully covered with the pouring sealant, the environment between the pins is completely sealed and isolated, contact of air, dust and impurities is effectively prevented, the conductive risk caused by external factors is eliminated, under the design, electrical connection similar to an internal structure is formed between the pins and the pads, the explosion-proof safety of a system is remarkably improved, and the service life of the system is prolonged. According to a specific explosion-proof standard, the minimum distance between the two bonding pads under the sealing structure only needs to meet 0.2 mm, so that the harsh requirement on a physical interval is greatly reduced, and a solution is provided for compact and efficient electrical design.

The utility model discloses a refrigerant filling device which comprises an assembly box, an exhaust system, a vacuumizing pipe, a filling pipe, a combustible gas detector and an anti-explosion vacuum pump, wherein the vacuumizing pipe, the filling pipe, the combustible gas detector and the anti-explosion vacuum pump are located in the assembly box. The filling pipe and the vacuumizing pipe are respectively connected to a refrigerant source and a vacuumizing device through upstream pipelines, and are respectively connected to the filling gun through downstream pipelines; a mass flow meter and a pressure sensor are arranged on the filling pipe; the exhaust system comprises an exhaust fan and an exhaust pipe, the exhaust pipe is connected to the anti-explosion vacuum pump, and the anti-explosion vacuum pump is used for extracting gas in the assembly box and exhausting the gas outwards through the exhaust pipe. By the adoption of the technical scheme, whether combustible gas leaks in the assembly box or not can be detected through the combustible gas detector, gas in the assembly box can be rapidly exhausted outwards through the explosion-proof vacuum pump and the exhaust system, the situation that the combustible gas is gathered in the assembly box to reach the explosion concentration is avoided, and therefore the explosion-proof safety of equipment is improved.

The utility model is used for controlling box technical field, disclose a kind of heat dissipation explosion -proof temperature control box, including box, the outside surface of box is equipped with the box cover of rotation, and the upper end of box is fixedly installed with warning light, the rear surface of box is fixedly provided with mounting box, one end of mounting box is through the inside surface of box.This heat dissipation explosion -proof temperature control box, by setting up mounting box and the closed circulation system of flow guide pipe, realize the physical isolation of air in box and outside, avoid dust, humidity and explosive gas into the inside of box, from the root, eliminate the short circuit, corrosion and other problems caused by electrical components due to external environmental factors, at the same time, this design eliminates the safety hazard that spark ignites explosive gas in open heat dissipation structure, significantly improves the explosion -proof safety of temperature control box in flammable and explosive dangerous environment, ensure that equipment can operate stably under complex harsh environment.

The utility model provides a kind of explosion-proof inclined plate piston open-type compressor unit of underground coal mine integrated air conditioner, the compressor unit includes compressor, explosion-proof motor and coaxial connecting piece, compressor has V-type air inlet, exhaust port, and the outer end of connecting shaft is provided with convex connecting block;Explosion-proof motor is coaxial with compressor, and the front end of output shaft has matching concave groove, and convex connecting block is inserted to realize circumferential locking, and coaxial connecting piece is composed of sleeve, front and rear end plate, and is sleeved with connecting shaft and output shaft outside, and length prevents axial disengagement, and front end plate is connected with compressor, and rear end plate is connected with explosion-proof motor, and sleeve is provided with observation port for easy monitoring.The compressor unit is explosion-proof safe, power transmission is stable, installation and maintenance are convenient, and is suitable for underground coal mine integrated air conditioner.

The invention relates to the technical field of batteries, and discloses high-voltage power distribution equipment, a mining vehicle and a power distribution control method. The high-voltage power distribution equipment comprises a box body, a BMS control device, a wiring assembly and a power distribution device, the box body is divided into the first cavity and the second cavity, the BMS control device is arranged in the first cavity, the power distribution device is arranged in the second cavity, and the power distribution device and the BMS control device are integrated in the same box body, so that the overall layout occupation of equipment is reduced, the internal wiring structure is optimized, and the complexity caused by cable crossing in dispersed layout is avoided. Circuit connection is achieved through the wiring terminals, wiring is simplified, risks of electromagnetic interference and signal interference are reduced, and therefore the stability of the system is improved. High-pressure and low-pressure elements are isolated through the re-combustion design of the cavity-divided structure, the explosion-proof safety of the system is enhanced, the system is suitable for complex environments such as mines, and the safety and reliability of equipment are improved.

The utility model discloses an explosion -proof weighing sensor, include: casing, weighing sensor unit is fixedly arranged in the casing, bearing assembly contains the weighing plate of detachable connection in the top of weighing sensor unit, plug -in guide mechanism includes the plug -in structure of setting in the top of weighing sensor unit and the adaptive plug -in spare of weighing plate connection, the adaptive plug -in spare is connected with plug -in structure through elastic rolling component, support adjusting mechanism contains at least a pair of articulated in casing's support unit, the support unit is connected with the bottom of weighing plate through detachable connection mechanism, the detachable connection mechanism contains spacing locking assembly and elastic reset component, realizes the quick assembly of support unit. The utility model adopts three -level buffer structure: the common effect of the joint action under the rolling buffer + elastic support + articulated adjustment reduces the impact influence, modular design realizes quick assembly maintenance, and double locking mechanism promotes explosion -proof security.

The invention relates to the technical field of anti-explosion equipment, in particular to a slip ring anti-explosion structure which comprises a slip ring and an anti-explosion shell arranged outside the slip ring. A connecting mechanism is arranged at the joint of the explosion-proof shell and the junction box; the connecting mechanism is provided with an alarm mechanism, the alarm mechanism is used for monitoring a gap value between joint surfaces of the connecting mechanism, and when the gap value does not meet a preset condition, the alarm mechanism gives a safety alarm. The safety and reliability of the slip ring explosion-proof structure are remarkably improved, the structure is simple, and the cost is low; the connection mechanism ensures the tight connection between the explosion-proof housing and the junction box, and the alarm mechanism realizes the intelligent monitoring of the gap between the joint surfaces, can quickly give an alarm when the gap is abnormal, and provides timely safety early warning for operators.

The application relates to the technical field of electric connectors, in particular to an explosion-proof plug adapter which comprises a shell, an electric connection assembly, a partition, a locking mechanism and a pressure relief device. The shell is divided into a front chamber and a rear chamber, the two chambers are isolated by a partition, and the explosion-proof function is realized by combining a ceramic insulating sleeve and epoxy resin glue; a sealing ring is made of graphite-based composite material to improve the sealing performance; the locking mechanism realizes quick connection and unlocking through a rotating sleeve and a locking claw; a tail plug can be quickly and tightly connected with a common plug, and the safety and usability are enhanced. The application can significantly improve the sealing performance, explosion-proof performance and operation convenience, is suitable for various complex working conditions, and ensures the reliability and safety of equipment operation.

This invention discloses an explosion-proof electrical control box, comprising: a box body, the box body including an explosion-proof outer shell and a front cover, the explosion-proof outer shell being a hollow shell structure with one open end, the front cover being closable at the opening, and when the front cover is closed at the opening, an explosion-proof joint structure is provided between the explosion-proof outer shell and the front cover, the explosion-proof joint structure being used to form a bent and extended explosion-proof channel to cool explosive gases and block the outward propagation of flames; a modular mounting plate for mounting electrical modules, slidably disposed within the explosion-proof outer shell, capable of being pulled out after the front cover is opened and realizing power-off interlocking in maintenance mode; and a pressure relief structure disposed on the explosion-proof outer shell, used to directionally release pressure and prevent flame propagation when there is overpressure inside the box. This application achieves comprehensive technical effects of safe maintenance, controllable pressure relief, reliable explosion-proof, and stable temperature.