46results about How to "Reduce external pressure" patented technology

A process for producing a film forming composition, the process including hydrolyzing and condensing: (A) at least one silane compound selected from a compound (A-1) shown by the following general formula (1), a compound (A-2) shown by the following general formula (2), and a compound (A-3) shown by the following general formula (3),

R_aSi(OR¹)_4-a  (1)

Si(OR²)₄  (2)

R³_b(R⁴O)_3-bSi—(R⁷)_d—Si(OR⁵)_3-cR⁶_c  (3); and

(B) a cyclic silane compound shown by the following general formula (4):

A semiconductor package includes a semiconductor die having a plurality of bond pads, a first protective layer formed at the periphery of the bond pads of the semiconductor die, UBM (Under Bump Metals) formed at the bond pads of the semiconductor die, a plurality of solder balls wetted to the UBM, and a second protective layer formed at the periphery of the solder balls. The second protective layer includes a thick collar, which is formed from the surface of the solder ball toward its periphery, so that the joint force of the solder ball can be more improved. Further, the second protective layer protects the surface of the wafer from the external environment, and absorbs and alleviates the external stress.

The invention provides a graphene oxide coating modified aromatic polyamide reverse osmosis membrane and a preparation method thereof and belongs to the technical field of water treatment membrane preparation .The reverse osmosis membrane comprises a substrate supporting layer, a middle porous bearing layer, an ultra-thin compact separation layer and a graphene oxide coating .The thickness of the graphene oxide coating is 50-150 nm .The surface of the compact separation layer is coated with the graphene oxide, so that the salt removing rate, antifouling property and chlorine resistance of the composite reverse osmosis membrane can be effectively improved, and meanwhile needed working pressure is lowered.

The invention relates to a carbon fiber reinforced self-temperature-measurement composite cable with aluminum alloy conductors. An elastomer is arranged among a plurality of conductors coated with insulating layers, and the section of the elastomer is a quadrangle, four sides of which are concave to be cambered; a carbon fiber reinforced core is arranged at the inner side of the elastomer; a belting layer and a jacket layer coat the outer sides of the four conductors coated with the insulating layers in sequence, a plurality of through holes are annularly distributed on the inner edge of the jacket layer, and the sections of the through holes are elliptic; an optical unit is arranged in a gap between the conductors and the belting layer, and at least one optical fiber is a grating fiber marked with temperature-measuring grating. The carbon fiber reinforced self-temperature-measurement composite cable has the following beneficial effects that the carbon fiber reinforced self-temperature-measurement composite cable has larger intensity and can better replace a copper conductor cable; and communication and real-time cable temperature monitoring can be both realized.

The invention discloses a skid-mounted oil and gas mixing and conveying device which comprises a skid frame. The skid frame is provided with a mixing and conveying pipe. A main mechanism, a ball collecting device, a mixing and conveying pump set and an outer conveying valve set are sequentially arranged on the mixing and conveying pipe. A first electromagnetic heat exchanger is arranged between the ball collecting device and the mixing and conveying pump set. A second electromagnetic heat exchanger is arranged between the mixing and conveying pump set and the outer conveying valve set. The mixing and conveying device further comprises an emergency tank. The main mechanism is connected with the emergency tank through an emergency perging pipe. The outer conveying valve set is connected to the emergency perging pipe. The emergency tank is connected to the mixing and conveying pump set through a metering pipe. The skid-mounted oil and gas mixing and conveying device is applicable to stations with low oil and gas ratio and low treating liquid amount, the technologies of oil and gas mixing and conveying, electromagnetic heating and the like are utilized, the foundation is laid for unattended operation and remote control over the low-efficiency stations, and finally the purposes of controlling work force, improving labor efficiency and reducing safety operation risks of the stationsare achieved.

The invention discloses a high-yield stable-yield planting method of polyporus umbellatus in northwest Yunnan. Before the polyporus umbellatus is cultivated, an armillaria mellea fungus material is first bred by adopting an overground fence cultivation method. When a yellow liquid flows out from two ends and wounds of the armillaria mellea fungus material, and white hyphae grow on the surface of the fungus material, a best planting period of polyporus umbellatus is achieved. According to the planting method, water accumulation in rainy seasons can be avoided with the adoption of the overgroundfence cultivation method, the fungus material is prevented from mildew, and the phenomena that the upper-layer fungus material is withered due to water lack or the development of the lower-layer fungus material is slow due to poor air permeability or water accumulation are prevented. Light-weight mountain base soil and leaves are adopted as cultivation materials, so that the water retention and air permeability are good, time and labor are saved in a collection and digging process, and the polyporus umbellatus can be collected at any time when the polyporus umbellatus is needed to be used. The filling materials used in the planting method of the polyporus umbellatus are light-weight good-air-permeable mountain base soil, miscellaneous wood chips, dried pine needles and the like, so that gas permeability, water retention and moisture retention are achieved, and time and labor are saved during the collection and digging of the polyporus umbellatus. In addition, mulch film is laid by adopting a double-film 1/4 overlap method, and the effects of grass prevention and water retention can be exerted.

The invention provides an atomizer mask for a child. The atomizer mask for the child comprises a semi-ovoid main mask body, wherein the main mask body is provided with two one-way vent valves, and each one-way vent valve is formed by assembling a valve cover, an air blocking plate and a valve body and has a one-way guiding function on gas. When a patient inhales, the one-way vent valve at the air inlet position is turned on, the one-way vent valve at the air outlet position is turned off, and medicine particles are inhaled into the mask with inspiration of the patient and then inhaled into a respiratory system of the patient. When the patient exhales, the one-way vent valve at the air inlet position is turned off, the one-way vent valve at the air outlet position is turned on, and waste air is exhausted outside the body through the mask. The defects of poor suction tube type atomizing effect, easy atomizer pollution and caused cross infection are overcome, and the defects of medicine waste and treatment effect influence caused by an open air outlet atomizer mask are also overcome.

The invention provides a container loading, unloading and stockpiling system. A stereoscopic warehouse type container warehouse is provided in the system, a traditional open storage yard is replaced, and the number of storage yards of containers and the unit area utilization rate of a site are increased. A four-layer stepped transfer platform is further arranged on the two sides of the outer portion of the stereoscopic container warehouse, a trailer wagon capable of moving rapidly, roadway shuttle cars and satellite cars are arranged on the transfer platform, traditional unmanned container trucks or AGVs are replaced, the distance between quay cranes and storage yards is greatly shortened, and the loading and unloading efficiency is greatly improved. The multiple roadway shuttle cars and satellite cars are arranged in the stereoscopic container warehouse. Meanwhile, the invention further provides a control method. Under control of a central control room computer system, all mechanisms only conduct single-function operation and can be seamlessly connected and cooperatively work, any container can independently enter a stereoscopic goods shelf quickly without moving any other container, and operation of container overturning and dumping of a traditional storage yard is avoided.

A clamp is provided. The clamp comprises a frame and a movable structure. The movable structure is detachably connected with the frame to define a receiving space for receiving at least one substrate. After sliding along a surface of the frame to a suitable position, the movable structure is adapted to be fastened together with the frame to fix the at least one substrate in the receiving space.

A novel sealing member and a novel wedging element that may be part of a novel seal assembly. The seal assembly may remain effective for more connection/disconnection cycles as compared to the previously known seals. In exemplary embodiments, the wedging element may engage the sealing member or a pair of the sealing members that sandwich the wedging element. When engaged, an inclined surface of the wedging element may radially compress a radially inwardly extending sealing leg of one or both of the sealing members. A fluid pressure opposite the wedging element relative to the corresponding sealing member may radially expand a radially outwardly extending sealing leg of one or both of the sealing members.

A threaded connection for steel pipe is provided with improved sealing performance against the internal pressure, where the sealing performance against the external pressure is not decreased. A threaded connection for steel pipe (1) includes a pin (10) and a box (20). The pin (10) includes a pin lip (11) having a pin inner sealing surface (11a) and a nose (11b), and a male thread (13). Each of the male thread (13) and a female thread (23) on the box (20) is constituted by a dove-tailed tapered thread. When the connection has been made up, the stabbing flank of the male thread (13) and the stabbing flank of the female thread (23) face each other with a clearance provided therebetween. The distance D between the male thread (13) and pin inner sealing surface (11a) is 1.5 times the thread pitch of the male thread (13) or larger. The length L of the nose (11b) is larger than the thread pitch of the male thread (13). The difference between the distance D and length L is equal to or smaller than the thread pitch of the male thread (13).

The invention discloses a soft package battery cell module of a spot welding process. The soft package battery cell module comprises a bottom frame and connecting rods, and a plurality of heat dissipation frames are fixedly connected into the bottom frame at equal intervals in the horizontal direction. A protection frame is fixedly connected to the top of the bottom frame, a heat conduction plateis fixedly connected to the top of the bottom frame and located in the protection frame, elastic limiting strips are fixedly connected to the positions, close to the two side edges, of the top of theheat conduction plate, and first buffer frames are fixedly connected to the four corners in the protection frame. In the present invention, by the connecting rods, the spacing distance between heat-conducting partition plates can be effectively adjusted in a sliding manner; the structure of the soft package battery cell module can be effectively adjusted according to the actual structural size ofbattery cells; therefore, the soft package battery cell module can effectively store different types of battery cells, and by adding and moving a first connecting block and a second connecting block,the first connecting block and the second connecting block can drive a barrier plate to effectively perform equal-distance separation between smaller battery cells under the limitation of the moving positions of a rotating shaft and a sliding block.

The invention provides a method for separating methylnaphthalene enrichment liquid form mixed C10 heavy aromatic composition. The method comprises the following steps that vacuum distillation is conducted on heavy C10 aromatic which durene, naphthalene and a low C10 aromatic solvent are removed, methylnaphthalene enrichment liquid is obtained, ethanol amine containing graphene is added and mixed to be uniform, and methylnaphthalene enrichment liquid modified by graphene is obtained; the methylnaphthalene enrichment liquid modified by graphene is transferred into a reboiler, reboiling is conducted by adopting an intermittent vacuum rectification system at the vacuum degree of -0.009MPa, and primary purification is conducted through vacuum rectification under the condition that the tower toptemperature is 80-85 DEG C and the tower bottom temperature is 150-155 DEG C; reboiling is conducted at the vacuum degree of -0.009MPa, vacuum distillation is conducted under the condition that the tower top temperature is 115-120 DEG C and the tower bottom temperature is 140-145 DEG C, and secondary purification is conducted; and finally, the product is placed in a FLC liquid film crystallizer filled with a filling material containing a micronano fiber composite material, cooling and crystallization are conducted for 2-4 hours at the temperature of -15 to -25 DEG C, squeezing and sweating are conducted, and the finished product of methylnaphthalene is obtained.

The invention discloses a flame-retardant and fire-resistant locomotive cable. The flame-retardant and fire-resistant locomotive cable comprises an outer-layer elastic insulating sheath. The flame-retardant and fire-resistant locomotive cable is characterized in that interlayer pads are arranged on the inner side of the outer-layer elastic insulating sheath; a plurality of interlayer pads are arranged; the plurality of interlayer pads are annularly distributed on the inner side of the outer-layer elastic insulating sheath; one side, close to the center of the cable, of each interlayer pad, isfixedly connected with an interlayer insulating layer; an outer-layer insulating cavity is formed between the interlayer insulating layer and the outer-layer elastic insulating sheath; an inner wrapping layer is arranged on the inner side of the interlayer insulating layer; metal shielding wires are arranged in a cavity formed between the interlayer insulating layer and the inner wrapping layer; and cable conductor cores are arranged on the inner side of the inner wrapping layer. According to the flame-retardant and fire-resistant locomotive cable of the invention, fastening connecting parts,the outer-layer insulating cavity and insulating rubber particles are adopted, and therefore, the problem that the insulating effect and flexibility of the locomotive cable are difficult to enhance through an air layer during the use of the locomotive cable can be solved, and the problem of influence on the use effect of the locomotive cable caused by difficulty in fixing internal cables can be solved.

The invention relates to a pressure sensor capable of being customized quickly based on integrated optics and a customization method, the sensor comprises a metal shell, a pressure block and an optical chip of a Mach-Zehnder structure, and the Mach-Zehnder structure comprises an input splitter, two interference arms with different lengths and an output beam combiner. When the measurement range is required to be customized, the sensitivity required by the device can be calculated according to different pressure ranges, and the shape of the pressure block is further determined. Customization of the pressure block can be completed through 3D metal printing or traditional machining, and rapid customization can be completed within the period of 1-2 days. And the customization cost is far lower than that of a traditional mode of redesigning and manufacturing a mask plate. According to the scheme provided by the invention, the measurement range of 0-500MPa, such as explosion pressure measurement, can be realized; and pressure measurement with a small range and extremely high sensitivity, such as vacuum degree measurement, can also be realized.

The invention discloses a vacuum tumbling machine for food processing. The vacuumtumbling machine comprises a tumbling cylinder and a sealing plate, wherein the outer side wall of the tumbling cylinder is fixedly connected with a supporting base, the outer side wall of the supporting base is fixedly connected with a vacuum pump, the tail end of an air inlet pipe of the vacuum pump is fixedly connected with the outer side wall of the tumbling cylinder, a motor is fixedly connected to the outer side wall of the tumbling cylinder, a connecting groove is formed in the outer side wall of the tumbling cylinder, a stirring rod is rotationally connected to the inner side wall of the connecting groove, a second rotating wheel is fixedly connected to the outer side wall of the stirring rod, a plurality of stirring blades are fixedly connected to the outer side wall of the stirring rod, the stirring rod drives a cleaning rod to rotate through the transmission rod, as the tail end of abrush abuts against the inner side wall of the tumbling cylinder, cleaning of the inner side wall of the tumbling cylinder is achieved, in the rotating process of the cleaning rod, a cleaning liquid in a containing box is thrown out of a discharging groove, and then grease in the tumbling cylinder can be effectively cleaned.

The invention provides an existing roadbed steel floral tube grouting method. The existing roadbed steel floral tube grouting method comprises the following steps that a first drill bit is adopted to drill a hole in a position to be grouted, and the first drill bit is taken out after the hole is drilled to the hole sealing depth; a steel floral tube is adopted to continue drilling to the designed depth on the basis of hole sealing, a second drill bit is arranged at the end of the steel floral tube located on the inner side, the outer diameter of the first drill bit is larger than that of the second drill bit, and the outer diameter of the second drill bit is larger than that of the steel floral tube; a space enclosed by the inner wall of the sealing hole and the outer wall of the steel floral tube is filled; grouting is conducted in the steel floral tube, and grout permeates into a roadbed through the grouting holes in the steel floral tube. According to the method, a gap is formed between the steel floral tube and a hole wall, soil on the hole wall cannot block the grouting hole in the steel floral tube, the grouting amount per minute is greatly increased, the resistance generated when the steel floral tube is tamped in is reduced, in addition, the grout leakage phenomenon can be avoided by the sealing hole.