30results about How to "High explosion-proof grade" patented technology

The invention relates to a process and complete-set apparatus for oil gas recovery and treatment. The complete-set apparatus for oil gas recovery and treatment comprises an oil gas collection device, a buffer gas-mixing tank, a vacuum pump, membrane assembly, a compression and condensation unit, a gas-liquid separation tank, a tube array heat exchanger, and a catalytic oxidation reactor. The process comprises that oil gases successively enter the buffer gas-mixing tank, a compressor and the compression and condensation unit; the compressed and condensed oil gases enter the gas-liquid separation tank for gas-liquid separation, and a gas phase is subjected to membrane separation in the membrane assembly; gases located at the permeate side of the membrane assembly pass through the vacuum pump, and then is compressed and condensed again; the concentration of the oil gases in gases located at the retentate side of the membrane assembly is reduced, and discharging is directly performed after the oil gas concentration reaches a standard; and if the concentration of the oil gases in the gases located at the retentate side still exceeds the standard, the gases enter the tube array heat exchanger to exchange heat with oil gases which are subjected to catalytic oxidation in the catalytic oxidation reactor, and the gases subjected to heat exchange enter the catalytic oxidation reactor, catalytic oxidation is performed under the action of a catalyst for removing organic materials in the gases, and at last discharging is performed after the oil gas concentration reaches the standard. The process and complete-set apparatus for oil gas recovery and treatment realize the high-efficiency recovery and treatment of the oil gases, and have certain industrial application prospect.

The invention discloses an explosion-proof and safety-increased type composite explosion-proof motor with a current transformer. An annular junction box support is welded on the base of an explosion-proof motor body. The annular junction box support is provided with an explosion-proof cover plate. The explosion-proof cover plate is connected with a safety-increased type current transformer junction box via a terminal box base. The explosion-proof cover plate is provided with an explosion-proof cable joint. The terminal box base, the explosion-proof cover plate, the explosion-proof cable joint and the base together form an explosion-proof housing of the motor. In this way, through arranging the current transformer as a measurement element on the explosion-proof motor body for realizing the differential protection, the interphase short-circuit protection function is effectively realized. Therefore, the security level of the explosion-proof motor is effectively realized. The motor is simple in structure, convenient to install and maintain, good in security and reliability and high in explosion-proof level. The technical scheme of the invention can be effectively applied to the explosion-proof motor with the power thereof larger than 2000 kW. The cost of the motor is greatly reduced.

The invention relates to the technical field of excess material recycling powder spraying equipment, and provides an explosion-proof type excess material recycling powder spraying room. The explosion-proof type excess material recycling powder spraying room comprises a powder spraying room body, a cyclone separator is connected to a side wall of the powder spraying room body, and the other end ofthe cyclone separator is connected with a filter cartridge dust remover; and the powder spraying room body comprises a room body, an overhead underframe is arranged on the inner bottom wall of the room body, the other end of the overhead underframe is connected with a powder pumping pipe in a penetrating mode, an air pump is arranged in the powder pumping pipe, and the other end of the powder pumping pipe is connected with the cyclone separator. According to the explosion-proof type excess material recycling powder spraying room, the defects in the prior art are overcome, the design is reasonable, the structure is compact, and the problem that powder mixed gas of an existing powder spraying room is large in concentration and inconvenient to recycle is solved; and through simple structuralcombination, powder in the powder spraying room is recycled through multi-step operation, meanwhile, the purification effect of exhausted gas is good, the powder spraying room is more friendly to theenvironment, the explosion-proof grade is high, the safety performance is good, and the powder spraying room has quite high practicability.

The invention relates to a process and complete-set apparatus for treatment of tail gases generated during steam blowing. The apparatus comprises a condensation heat exchanger, a three-phase separator, a mixing tank, a vacuum pump, a compression and condensation unit, a gas-liquid separator, membrane assembly, a heat exchanger and a low-temperature catalytic oxidation reactor. The tail gases generated during steam blowing are firstly cooled in the condensation heat exchanger, then the cooled tail gases enter the three-phase separator, and primary separation is performed in the three-phase separator to obtain dirt oil, waste water and waste gases, the separated dirt oil is stored in an oil storage tank, the separated waste water is treated in a sewage pipe network, and the separated waste gases are recycled and treated in a process device integrating a compression and condensation process, a membrane separation process and a low-temperature catalytic oxidation process. According to the invention, when the apparatus is used, higher-value organic materials in the tail gases can be recycled, and the emission indexes of the tail gases can be satisfied, and meanwhile, no electric heating systems are used, so that the explosion-proof grade of the apparatus is improved, and skid-mounted mobile design is adopted, so that requirements of starting the apparatus near petrochemical enterprise equipment can be satisfied, and on-site processing of the tail gases is realized.

The invention relates to an oil unloading device vehicle for a railway oil tank and an oil transportation method thereof. A vehicle chassis system is fixedly connected with a platform assembly; the platform assembly is provided with a control box, an electrical control box, an oil return extending-retracting oil tank, an oil pump, a loading arm assembly, a loading arm box and an oil passage control valve; the loading arm assembly comprises a set of railway oil transportation loading arm assembly, a set of vehicle oil transportation loading arm assembly, and one to two sets of bottom filling oil pipe assemblies, wherein the railway oil transportation loading arm assembly is arranged in the an oil absorption loading arm box of the railway oil tank, and the vehicle oil transportation loadingarm assembly is arranged in a vehicle oil transportation loading arm box; one side of the vehicle chassis system is provided with the control box; a flow meter, a dry self-sealing joint and the oil passage control valve are arranged in the control box; and the other side of the chassis is provided with the oil passage control valve. The vehicle can complete functions of vacuum pump priming, unloading oil transportation, bottom oil suction, emptying and the like, has the advantages of simple structure, convenient operation, convenient observation of the meter, reasonable layout, high measuringprecision, higher explosive-proof grade and the like and is mainly used to suck the flue oil in the railway oil tank and transport the flue oil to the oil delivery vehicle.

The invention relates to a hydrogen storage cylinder for an explosion-proof hydrogen fuel cell automobile and a manufacturing method thereof. The method comprises the following steps: 1 ultrahigh molecular weight polyethylene fibers impregnated with a surface active coupling agent is wound and pre-cured on the polyethylene liner of the hydrogen storage cylinder, and a first interface layer is formed on the plastic liner of the hydrogen storage cylinder; 2 a pressure sensor is attached to the surface of the first interface layer, then ultra-high molecular weight polyethylene fibers impregnated with low-temperature curing epoxy resin are wound on the first interface layer containing the pressure sensor and are pre-cured at the same time, and a second interface layer is formed on the plastic inner container of the hydrogen storage cylinder; and 3 the hydrogen storage cylinder obtained in the step 2 is cured for the first time, then carbon fibers impregnated with medium-temperature cured epoxy resin are wound on the surface of the obtained hydrogen storage cylinder, and finally secondary curing is conducted to obtain the hydrogen storage cylinder for the hydrogen fuel cell automobile, which is high in anti-explosion grade, light in weight, high in strength and good in safety.

The invention provides a vacuum generator which is characterized in that air around a vacuum generation sleeve is taken away to generate vacuum by adopting compressed air as power and utilizing a Bernoulli principle. The vacuum generator comprises the vacuum generation sleeve, a sleeve shell and a vacuum generator base. The compressed air enters from a compressed air inlet of the base and drives the air in the vacuum generation sleeve to flow in the axial direction, so that the air pressure outside the sleeve is larger than that inside the sleeve; and the air outside flows into the sleeve through a through hole on the side wall of the sleeve and then flows out from a compressed air outlet of the sleeve (or the sleeve shell). The process is simply described as follows: the air outside is taken away by the compressed air in the vacuum generation sleeve to generate the vacuum.

The invention discloses an explosion-proof shell body of a photoelectric switch. The explosion-proof shell body comprises a supporting seat and an explosion-proof assembly, wherein a light-transmitting hole and a mounting hole, which are communicated with each other, are coaxially formed in the supporting seat; the mounting hole is internally provided with a transparent part for light transmissionof the photoelectric switch; the explosion-proof assembly comprises a transparent part pressing sleeve, a main shell body and a cable introduction device, which are arranged in sequence from front toback; the transparent part pressing sleeve is in thread connection into the mounting hole; a front end of the transparent part pressing sleeve is used for abutting a transparent part on a rear end face of the light-transmitting hole; the photoelectric switch is mounted in the transparent part pressing sleeve; the front end of the main shell body is detachably connected into the mounting hole; a rear end of the main shell bod is detachably connected with the front end of the cable introduction device; the cable introduction device is used for introducing and fixing a cable connected with the photoelectric switch. The explosion-proof shell body of the photoelectric switch is simple and compact in structure and can meet protection of the photoelectric switch under a limited space; the explosion-proof shell body is convenient to dismount and mount, and has a high explosion-proof grade and extremely strong practicability.

The invention discloses a positive pressure inflatable explosion-proof interlocking device for an industrial chromatograph, comprising a shell. The shell is internally provided with a locking three-way valve, the upstream of the locking three-way valve is provided with a pressure stabilizing valve and a flow meter, the downstream of the locking three-way valve is provided with a reset valve, the downstream of the reset valve is provided with a door interlock, the downstream of the door interlock is provided with a time delay valve, the downstream of the time delay valve is provided with a state switching valve, and the downstream of the state switching valve is provided with a gas / electricity relay, an electrical control plate and a pressure transmitter. The positive pressure inflatable explosion-proof interlocking device for the industrial chromatograph is installed in the positive pressure inflatable explosion-proof cavity, to monitor and detect the positive pressure state of the electrical control part of the industrial chromatograph, and to continuously blow non-combustible gas to prevent the explosive gas into this area. Only when the electrical control part is fully purged, the power supply is provided to the chromatograph. The automatic completion is achieved, the explosion-proof grade is high, and the positive pressure inflatable explosion-proof interlocking device is especially suitable for the miniaturization of equipment.

The invention relates to a high-effective organic waste gas recovery processing method and complete equipment. The complete equipment includes: an organic waste gas collection apparatus, a gas storage tank, a buffer tank, a primary membrane unit, an active carbon adsorption unit, a vacuum pump, a gas-liquid separation tank, a compression condensing unit, a secondary membrane unit, a low temperature catalytic oxidizing reactor, and a tubular heat exchanger. Through the two-stage membrane as a core technology, advantages that a membrane process is high in efficient, is continuous, has high recover rate and high safety and is suitable for high-concentration organic waste gas are achieved, thus recovering the recoverable components in the waste gas; in addition, with the low temperature catalytic oxidization technology, an advantage of deep processing thereof is achieved, so that a problem of accumulation of light-hydrocarbon substances is overcome. The processing method and complete equipment not only high-effectively recover valuable organic substances, but also can perform deep processing to the organic waste gas with satisfaction of strict requirements on safety production in petrochemical enterprises. Through the deep processing to the organic waste gas, discharged organic waste gas can reach national emission standards.

The invention, which belongs to the technical field of encoders, discloses a high-protection-level flameproof transmission encoder assembly, thereby solving the problems of complex structure, high cost and difficulty in guaranteeing coaxiality because a coupling for transmission and a transition flange for positioning need to be added between a motor small shaft and an encoder small shaft when theexisting encoder is used. The encoder assembly comprises a transition shaft, an encoder, a transition shaft sleeve, a shell and an explosion-proof sealing and locking joint. The encoder and the transition shaft sleeve are arranged in the shell; a threaded hole is formed in the shell; the explosion-proof sealing and locking joint is arranged in the threaded hole in the shell; the explosion-proof sealing and locking joint is in sealing fit with the shell; a wire on the encoder penetrates out of the shell from the explosion-proof sealing and locking joint; the transition shaft sleeve is fixedlyconnected with the shell; a first matching face is arranged between the interior of the shell and the transition shaft sleeve, and the gap between the first matching face of the shell and the first matching face of the transition shaft sleeve is 0 to 0.104 mm. The high-protection-level flameproof transmission encoder assembly is suitable for being used in explosion-proof occasions.

The invention discloses an aircraft fuel oil guaranteeing device which comprises a power module, a pumping filtration module and an accessory module which are connected in sequence. The power module is used for supplying power to the aircraft fuel oil guaranteeing device, collecting and displaying working data information of the aircraft fuel oil guaranteeing device and uploading the working datainformation to a cloud or a server. The pumping filtration module is used for pumping fuel oil from an external oil storage tank or an oil bag under the driving of the power module and carrying out water separation and impurity filtration on the fuel oil. The accessory module is used for supplying the fuel oil subjected to water separation and impurity filtration by the pumping filtration module to the aircraft, so that the fuel oil of the aircraft is guaranteed. A modular design is adopted, all the modules are small in size and light in weight, each module can be loaded through a portable transport box, land transport, sea transport and air transport are directly adopted, various transport requirements can be met, and the purpose of rapid fuel oil guarantee of the aircraft in the all-terrain environment or under the condition of lack of supply facilities is effectively achieved.

The invention discloses an explosion-proof and safety-increased type composite explosion-proof motor with a current transformer. An annular junction box support is welded on the base of an explosion-proof motor body. The annular junction box support is provided with an explosion-proof cover plate. The explosion-proof cover plate is connected with a safety-increased type current transformer junction box via a terminal box base. The explosion-proof cover plate is provided with an explosion-proof cable joint. The terminal box base, the explosion-proof cover plate, the explosion-proof cable joint and the base together form an explosion-proof housing of the motor. In this way, through arranging the current transformer as a measurement element on the explosion-proof motor body for realizing the differential protection, the interphase short-circuit protection function is effectively realized. Therefore, the security level of the explosion-proof motor is effectively realized. The motor is simple in structure, convenient to install and maintain, good in security and reliability and high in explosion-proof level. The technical scheme of the invention can be effectively applied to the explosion-proof motor with the power thereof larger than 2000 kW. The cost of the motor is greatly reduced.

The invention relates to a novel explosion-proof lamp which comprises a heat dissipation baseboard, a driving power supply and a lamp panel provided with a plurality of LEDs (light-emitting diodes). The novel explosion-proof lamp provided by the invention is characterized in that a frame defined by four section bars is located on the front side of the heat dissipation baseboard; the lamp panel isarranged in the frame, and the lamp panel and the heat dissipation baseboard are fixed into a whole; and organic glass is covered on the frame. By utilizing the technical scheme, the novel explosion-proof lamp has the advantages of high explosion-proof level, strong commonality, low cost, compact structure, convenience in installation and the like.

An oil-water interface measuring instrument based on photoelectric sensing, comprising a photoelectric sensor measuring head, a tape measure and a tape measure data reading and display mechanism; Take the display mechanism to record the rotation speed of the tape measure through the encoder, and then calculate and display the value of the tape measure rotation by the single chip computer; a measuring circuit is arranged between the cylindrical shell and the hollow glass tube in the photoelectric sensor measuring head; in the measuring circuit, the light emission There is one light-emitting tube in the light-receiving area, and two receiving tubes in the light-receiving area, forming a photoelectric sensor group; when the sensor group is placed at the oil-water interface, the light will be refracted and scattered, resulting in the light of the two light-receiving tubes will change, thus Determine if there is an interface change. The invention realizes the high-precision detection of the oil-water interface and the automatic reading of the interface distance, and has the characteristics of high measurement accuracy, automatic reading and simple operation compared with the traditional equipment.