262results about How to "Explosion-proof" patented technology

The invention relates to a flexible tubular solid liquid processor, with filter, heat exchange and thermal extraction functions, wherein the filter element at least comprises one flexible tubular membrane unit, upper flange room and lower flange room; the hydraulic extracting system comprises pressure container, extract pump and tubes; the material liquid of container can be filtered by the tubular filter membrane of membrane unit, and said material liquid can be used as work medium to extract the concentrated material liquid in the filter room of membrane unit and discharge filter slag; the pressure container or the filter room of membrane unit can be filled with medium to exchange heat, to realize thermal filter or extraction; the filter element is arranged on the bearing base inside the pressure container; the filter rotator can rotate the filter element to realize cross-flow filter; and the invention can be arranged with gas or water reverse tube and vacuum filter tube; the slag discharge system comprises slag discharger or tubular inner/outer membrane scraper, or vibration slag discharger, or compression slag discharger.

The invention discloses a construction method for pouring an airtight partition wall between a recovered roadway and a reserved roadway. The airtight partition wall is formed by an inner concrete single wall, an outer concrete single wall and a middle loess concrete wall; and the airtight structure is provided with three layers of walls: the inner side and the outer side are respectively provided with the airtight single wall which is formed in a way that a concrete pump pours concrete into a fiber flexible template, and the loess concrete wall filled by loess-based materials is arranged between the two single walls. The flexible templates are made in advance according to design requirements; a slot is drilled on a preset airtight surrounding rock connecting the roadways; anchor rods are constructed in the slot; after the flexible templates are hung onto the slot through a single hydraulic prop or the anchor rods, the concrete is successively poured into the inner side flexible template and the outer side flexible template by a concrete conveying pipe and a pouring opening through the concrete pump to form the inner single wall and the outer single wall; and after the inner single wall and the outer single wall are poured completely, the loess is poured between the inner single wall and the outer single wall to form the concrete airtight wall. The structure is safe and reliable, the construction cost is low, the construction speed is fast, the labor intensity is low, and the requirements of mine production with high production and high efficiency are met.

The invention discloses a composite fracturing and uniform permeability-improving method for tree-like boreholes in coal seams of an underground coal mine. The composite fracturing and uniform permeability-improving method is suitable for permeability improvement of soft low-permeability coal seams, and is characterized in that a gas exhausting and mining hole serve as a mother hole, uniformly distributed self-advancing boreholes serve as tree-like son boreholes, and a tree-like borehole net is subjected to hole-sealing fracturing. Compared with a conventional hydraulic fracturing method, the composite fracturing and uniform permeability-improving method can realize uniform fracturing of the low-permeability coal seams to enlarge the fracturing range of single crossing boreholes, so that uniform permeability improvement is achieved, and the shortcomings that the crossing boreholes subjected to conventional hydraulic fracturing are low in utilization ratio, and a single major fracture can damage top and bottom beds are overcome. The composite fracturing and uniform permeability-improving method is simple to operate, large in permeability improvement range and good in permeability improvement effect and provides a guarantee for safety production of the underground coal mine.

The invention discloses a detection robot for underground rescue of a pressurized type coal mine, belonging to the technical field of robots. The detection robot comprises an explosion-proof box body, symmetrical travelling mechanisms, two driving mechanisms, an industrial control computer, a lifting mechanism and an optical fiber winding mechanism, wherein the symmetrical travelling mechanisms are arranged on two sides of the explosion-roof box body; the two driving mechanisms and the industrial control computer are arranged in the explosion-roof box body and are respectively independent; the lifting mechanism is provided with various probes; the mechanisms form a modular structure; the two driving mechanisms are symmetrically arranged and respectively comprise a first driving motor, a second driving motor, batteries connected with the motors, a first spur gear, a second spur gear, a driven spur gear, a first planetary reducer and a connecting shaft; the first spur gear and the second spur gear are respectively sleeved on output shafts of the first drive motor and the second drive motor; the driven spur gear which is in simultaneous meshed drive with the first spur gear and the second spur gear is sleeved on an input shaft of the first planetary reducer; an output shaft of the first planetary reducer is connected with a connecting shaft extending out of the box body; and the connecting shaft end is connected with a driving wheel. According to the invention, one output shaft is driven by adopting two motors simultaneously, thus the power of the robot can be improved.

The invention relates to the field of silicon dioxide aerogel, and particularly discloses a silicon dioxide aerogel compound fabric, a preparation method and a military tent cloth. The preparation of the silicon dioxide aerogel compound fabric comprises the following steps of: soaking a cloth made from high-strength synthetic fibers into a silicon dioxide sol; after the surface of the cloth is completely soaked, sealing the cloth soaked with the silicon dioxide sol and made of the high-strength synthetic fibers, and aging by a gel; finally supercritically drying. The military tent cloth comprises an outer layer, an interlayer and an inner layer, wherein the outer layer is a camouflage cloth coated with vinyl polyester fibers; the interlayer is a silicon dioxide aerogel compound fabric part; the inner layer is a military dacron cloth. The silicon dioxide aerogel compound fabric provided by the invention has the advantages of light weight, good heat-insulating property and extremely high absorption property on high-strength impact force and has the characteristics of good heat-insulating property, light weight and anti-explosion property.

The invention relates to an all-solid electrochromic device and a preparation method thereof. The all-solid electrochromic device comprises a substrate A and a substrate B; the inner side of the substrate A is sequentially provided with a transparent conductive layer A and an anode electrochromic layer; the inner side of the substrate B is sequentially provided with a transparent conductive layerB and a cathode electrochromic layer; and a solid electrolyte layer is arranged between the anode electrochromic layer and the cathode electrochromic layer. The preparation method includes the following steps of: (1) the treatment of a substrate A and a substrate B; (2) the preparation of a cathode electrochromic layer; (3) the preparation of a cathode electrochromic layer; (4) the preparation ofa solid electrolyte layer; and (5) the preparation of an all-solid electrochromic device. The method has the advantages of simplicity and convenience; and the all-solid electrochromic device has the advantages of high ionic conductivity and high anti-aging performance. According to the all-solid electrochromic device and the preparation method thereof, a complementary electrochromic film is adopted, and therefore, with a color change requirement satisfied, the rapid complementary color change of the electrochromic device under a low voltage is realized, the use safety of glass is improved; andthe driving voltage of the device is low, so that the device has a bright application prospect.

The invention discloses a special offshore deoiling oil absorbent felt. The special offshore deoiling oil absorbent felt comprises an oil absorbent felt body which is prepared from an oil absorbent fiber, is provided with an oil absorbent clearance part, and comprises two oil absorbent fiber layers; the oil absorbent clearance part formed between the two oil absorbent fiber layers is filled with a water-repellency oleophylic material, and the two oil absorbent fiber layers and the water-repellency oleophylic material are solidified integrally. The preparation method comprises the following steps: (1) pretreatment, namely preparing the water-repellency oleophylic material for filling for later use, and selecting an oil absorbent fiber for later use; (2) producing an oil absorbent fiber layer; (3) laying a water-repellency oleophylic material; (4) solidifying; and (5) coiling. An oil containment boom prepared from enteromorpha has good oil blocking and oil absorption performances, the use effect of the oil containment boom can be enhanced, the oil containment boom can float on the water surface for a long time after oil absorption, can not sink or deform, and has good oil absorbing and blocking effects.

The invention relates to a leakage monitoring and warning system of a large fiber-grating liquid gas storage tank, which comprises a wideband light source, a Y-shaped optical splitter, a temperature probe string, a wavelength demodulator, a computing unit, and an acousto-optic warning device, wherein the temperature probe string comprises a plurality of bragg fiber gratings; the wideband light source is connected with one splitting port of the Y-shaped optical splitter through an optical fiber; the combining port of the Y-shaped optical splitter is connected with the probe string comprising the bragg fiber gratings through an optical fiber; the other splitting port of the Y-shaped optical splitter is connected with the wavelength demodulator in series though an optical fiber; data is transmitted to the computing unit by the wavelength demodulator through a data wire; and the computing unit is connected with the acousto-optic warning device through a lead. The changing situation of the temperature within the range of -100-100 DEG C on the tank wall of the large liquid gas storage tank is monitored in real time and on line through a fiber-grating sensing network, and when liquid gas leaks and the monitored temperature change of the fiber grating is caused to exceed a temperature-reduction threshold value, acousto-optic warning can be triggered by the system.

The invention provides a temperature and humidity adjusting device for a chemical fire explosion safety test chamber system. The device provided by the invention comprises a temperature adjusting device and a humidity adjusting device. According to the chemical fire explosion safety test chamber system with the temperature and humidity adjusting device, harms of a runaway reaction, combustion explosion, decomposable explosion and the like which are generated during the process of large-scale chemical risk assessment test are eliminated, and simultaneously, effluents, exhaust gas and waste residues that are generated during collection test process undergo centralized processing. Inherent safety of the fire explosion risk test process is raised, and the effect of reducing environmental pollution is also achieved.

The invention relates to the technical field of a weak grating on-line monitoring system, in particular to an optical fiber grating array intelligent vibration positioning and temperature monitoring system. The system includes a swept source, an optical circulator, an optical fiber, identical weak grating arrays, an elimination optical fiber end face reflection device, an optical fiber transmission optical cable, a signal demodulation unit, a computer and a display screen, wherein the swept source is connected to the first port of the optical circulator, the second port of the optical circulator is connected to the head ends of the weak gratings of the identical weak grating arrays through the optical fiber, the tail end of the weak grating is connected with the elimination optical fiber end face reflection device, and the third port of the optical circulator is connected with the optical fiber transmission optical cable, the optical fiber transmission optical cable is connected to thesignal demodulation unit, the signal demodulation unit is connected to the computer, the computer is connected to the display screen, the optical fiber is fixed on a measured medium through a specially-made optical fiber clamp, and the identical weak grating arrays are uniformly distributed on the measured medium, and the temperature and vibration sensing points are customized by a temperature sensing unit and a vibration sensing unit according to monitoring requirements.

The invention discloses composite fracturing and uniform permeability increasing equipment for treelike drilling in a coal seam of an underground coal mine. The whole equipment can be divided into a hole forming system and a fracturing system. The hole forming system comprises a drilling machine, a drill stem, a drill bit, a support, a water tank, a high-pressure pump, a winch, a propelling mechanism, a chuck, a high-pressure hose, a self-propelled drill bit and the like. The fracturing system comprises the water tank, the high-pressure pump, a pressure meter, a high-pressure rubber pipe, a hole sealing device and the like. The composite fracturing and uniform permeability increasing equipment is suitable for carrying out volume fracturing on the coal seam of the underground coal mine, can reach the effects of carrying out uniform permeability increasing on the coal seam and increasing the gas extraction rate, and is easy to operate and good in economic performance.

The invention discloses a full-automatic measuring instrument and a measuring method for the spraying water quantity of an underground engineering roadway top plate. The measuring instrument comprises a spraying water collecting container, wherein the upper end of the spraying water collecting container is connected with a receiving device; a water discharge port is arranged at the lower end of the spraying water collecting container; a pressure sensor is arranged at the bottom inside the spraying water collecting container; at least one liquid level switch is arranged at the side inside the spraying water collecting container; the measuring instrument also comprises a timing and automatic flow display device; the timing and automatic flow display device comprises a single chip microcomputer, a control panel and a display screen; and the single chip microcomputer is connected with the display screen, the control panel, the pressure sensor and the liquid level switch respectively. The measuring method comprises the steps of: collecting the spraying water of the top plate, and calculating the flow according to the volume and the time of the spraying water. With the adoption of the measuring instrument and method, the precise measurement of the spraying water of the roadway top plate is realized; the situation of large errors caused by the fact that the spraying water quantity is generally measured through estimation depending on the experience because of the lack of advanced effective instruments in the spraying water quantity measurement in mines or tunnels is changed; and the measuring instrument and method are applicable for underground engineering such as mines, tunnels and the like and are wide in applicable range.

The invention relates to a mine flameproof and intrinsic safety type variable frequency speed control device, which comprises a frequency converter consisting of a three-phase rectifier, a filtering capacitor and an IGBT inverter, a control device, and a flameproof case body, wherein the control device comprises an isolating switch, a power frequency and secondary control loop, and a variable frequency and control loop. The variable frequency speed control device has a variable frequency operating mode and a power frequency operating mode, and gives priority to the variable frequency operating mode complemented with the power frequency operating mode, thus the variable frequency speed control device not only can regulate the speed and save energy better, but also has the advantages of dust control, moisture protection, flame protection, and the like; and the variable frequency speed control device adopts digital display, which not only has a function of remote and approach controls, but also has functions of displaying electric energy, namely displaying load electric energy clearly, and temperature control, and has protection functions of surge protection, open phase protection, over voltage protection, under-voltage protection, and the like. The variable frequency speed control device can be applied to underground places with coal dust or gas coal dust explosion in coal mines to perform controls of starting, stopping and variable frequency speed control on a three-phase flameproof motor, and performs various protections on the motor. The variable frequency speed control device adopts a variable frequency speed control method which is advanced and can be widely popularized.

The invention relates to a drilling track measurement system and method, in particular to an acoustic-wave measurement while drilling system and method for the underground coal mine anti-explosion drilling track. The system comprises in-hole equipment used for collecting and sending drilling track parameters in real time and orifice equipment used for receiving the drilling track parameters sent by the in-hole equipment in real time and forming and displaying a drilling track curve. The drilling track parameters are transmitted between the in-hole equipment and the orifice equipment through an anti-explosion acoustic wave generator and an anti-explosion acoustic wave receiver, and the anti-explosion acoustic wave generator and the anti-explosion acoustic wave receiver are used in pair. Accordingly, the system has the following advantages that 1, the structure is simple and compact, the size is small, and the system is suitable for underground coal mine drilling jigs of various specifications; 2, the underground coal mine drilling process is not changed, and the price is low; and 3, the anti-explosion design is adopted, and the system can work in an underground coal mine explosive gas atmosphere.

The invention discloses a high-performance composite refractory material for a kiln opening. The high-performance composite refractory material is prepared from ingredients in percentage by weight: 30 to 44 percent of tabular corundum, 12 to 17 percent of rubing grain, 7 to 12 percent of composite alundum powder, 10 to 15 percent of andalusite, 5 to 10 percent of aluminum oxide micro powder, 3 to 8 percent of zircon sand, 2 to 4 percent of cyanite, 1 to 3 percent of silicon micro powder, 3 to 7 percent of nanometer silicon carbide powder, 3 to 6 percent of pure calcium aluminate cement, 4 to 6 percent of zirconium carbonate powder, 1 to 2 percent of zinc silicate powder, 1 to 2 percent of additives, 0.3 to 0.5 percent of additive heat-resistant steel fiber and 0.1 to 0.2 percent of dispersants. The high-performance composite refractory material for the kiln opening has the beneficial effects that the refractory material ingredients in the prior art are improved; the tabular corundum, the rubing grain and the composite alundum powder are used as aggregate ingredients; powder materials such as the nanometer silicon carbide powder, the zircon sand, the cyanite, the composite additives, the zirconium carbonate powder and the zinc silicate additive heat-resistant steel fiber are added; the obtained high-performance composite refractory material for the kiln opening has the advantages that bursting does not occur after fast baking; the wear-resistant performance at high temperature is good; the performance of resisting the erosion of cement clinker atmosphere generated by different raw materials is realized.

The invention relates to a distribution type optical fiber temperature monitoring system, which comprises a monitoring center master station, and at least one remote controlled substation connected with the monitoring center master station through optical fiber, wherein the remote controlled substation at least comprises a temperature sensor module. The invention is characterized in that: the remote controlled substation at least comprises two optical fiber transceivers; the electric ports of the two optical fiber transceivers are both connected with the temperature sensor module; the optical port of a first optical fiber transceiver of a first remote controlled substation is connected with the first communication port of the monitoring center master station, the optical port of a second optical fiber transceiver of a last remote controlled substation is connected with the second communication port of the monitoring center master station, and each two adjacent remote controlled substations are connected through optical fiber. The invention does not need extra networking cost; signal transmission is sent to the monitoring center master station through a two-way loop, and when the optical fiber at one side of one remote controlled substation encounters abnormality, the signal is transmitted to the monitoring center master station through the optical fiber at the other side.

The invention relates to a silicon dioxide aerogel composite material. The silicon dioxide aerogel composite material comprises an ingredient A and an ingredient B at a volume ratio of (1-3);1, wherein the ingredient A is an expanded perlite powder which is at the density of 100kg/m3 and obtained by passing through a 80-mesh sieve. The expanded perlite is added into the ingredients of the existing silicon dioxide aerogel, and the aerogel composite material in a needed shape and with certain rigidness can be obtained by means of molding method-prepressing molding gel method. The silicon dioxide aerogel composite material enables the aerogel to be more widely used, and can be widely applied to the fields of thermal insulation, damping energy absorption and the like; not only can the original performance of the modified aerogel be more outstanding, but also the compounded composite material has more new functions; the composite material is high in compressive strength, and good in fire resistance, and also plays roles in anti-explosion and damping energy absorption.

The invention discloses an explosion proof type perpendicular highway transport cart and relates to a highway transport cart for transporting large special type devices. The explosion proof type perpendicular highway transport cart can meet the requirement for transporting special type devices. The explosion proof type perpendicular highway transport cart comprises a motor tractor and a semitrailer (2). The motor tractor is an explosion proof type electric tractor (1). The semitrailer comprises a gooseneck (3), an explosion proof power pump station (4), a front frame (5), a middle connecting frame (6), a rear frame (7), a wheel set, a steering system (14) and a suspension system (15). The front end of the gooseneck is hinged to a traction saddle on the explosion proof type electric tractor, the rear end of the gooseneck is hinged to the front end of the front frame, and the front frame, the middle connecting frame and the rear frame are hinged in sequence; the middle connecting frame is of a concave-type structure, the wheel set, the steering system and the suspension system are installed below the semitrailer, and the explosion proof power pump station controls the steering system and the suspension system through a hydraulic system.

The invention relates to contacting type optical fiber raster shape memory alloy pipe displacement transducer. Its features are that it is made up of bearing, protecting steel tube, spring, and optical fiber raster strain gage with double layer steel tube composite structure; it uses epoxy resin to seal the optical fiber taster in to the 0.5mm steel tube which assembles with two 1.2mm steel tubes to form optical fiber raster strain gage of which one end is connected with 1.2mm hollow steel tube; another end is connected with the spring and set in the bearing. The advantages of the invention are that little volume and high measuring precision, setting many sensors at one optical fiber to do multipoint distributivity measuring, connecting with various sensors based on optical fiber raster technique in series.

The invention provides a wireless charging foreign matter detecting system based on an optical fiber sensing network and a detecting method. The wireless charging foreign matter detecting system comprises an upper cover plate, a optical fiber sensing network panel, a transmitting coil, a magnetic conductive unit, a first temperature sensor, a second temperature sensor, a lower cover plate and an optical fiber sensing network panel control circuit. The upper cover plate is arranged above the optical fiber sensing network panel which is positioned above the transmitting coil, the transmitting coil is placed above the magnetic conductive unit, and the magnetic conductive unit is installed above the lower cover plate; the first temperature sensor makes contact with an optical fiber starting point of the optical fiber sensing network panel; the second temperature sensor makes contact with the upper surface of the lower cover plate. According to the wireless charging foreign matter detectingsystem based on the optical fiber sensing network and the detecting method, through temperature and stain detection of the transmitting coil to find out a system of the foreign matter, and detectionmethod, the problem that metal foreign matter causes high temperature on the wireless charging transmitting coil, and a potential safety hazard can be caused, and potential health effects can be caused due to the fact that living body foreign matter enters a wireless charging working area.