36results about How to "No omission" patented technology

The invention discloses a local discharge ultrahigh-frequency detection fractal antenna which comprises a dielectric layer and a conductor layer, wherein the conductor layer is laid on the upper surface of the dielectric layer and comprises a plurality of squiggly conductor segments which are connected end to end; the conductor segments are arranged according to the Hilbert fourth-order fractal principle to form a fourth-order radiating antenna element; the covering surface of the conductor layer on the dielectric layer is rectangular; the side length of the covering surface is the side length of the conductor layer; and a feed point is arranged on the conductor segment. The fractal antenna which has the advantages of good directivity, wide frequency bandwidth, low standing wave ratio and convenient impedance matching, can meet the requirement on the on-line monitoring and ultrahigh-frequency detection of the local discharge of a transformer; and in addition, the invention also discloses a preparation method of the local discharge ultrahigh-frequency detection fractal antenna.

The invention relates to a low-density water base drilling fluid capable of resisting ultra-high temperature of 248 DEG C as well as a preparation method and application thereof. The drilling fluid isprepared from the following raw materials: 100 parts of pulp blending water, 0.2-0.3 part of sodium carbonate, 1.5-4 parts of sodium bentonite, 0-0.5 part of caustic soda flake, 0.3-0.5 part of deoxidant, 0.3-0.7 part of zwitter-ion hydrophobic associated polymer filtrate reducer, 0.5-1.2 parts of anionic type polymer filtrate reducer, 3-5 parts of sulfomethylation formoldehyde resin type II, 3-5parts of sulfomethylation lignite resin, 2-4 parts of high softening point sulfonated bitumen, 1-3 parts of modified graphitic lubricant, 1-3 parts of polymeric alcohol, 0-6 parts of No.5 white oil,0-1 part of emulsifier, 0-2 parts of polycarboxylate flow type conditioning agent, 3-5 parts of ultra-high temperature blocking agent and 0-20 parts of API (American Petroleum Institute) standard barite. The drilling fluid is suitable for a stratum of which the temperature is 248 DEG C. The ultra-high temperature low-density water base drilling fluid disclosed by the invention has the advantages of high thermal stability under an ultra-high temperature condition, simpleness in performance maintenance and low cost, and the rheological property of the drilling fluid is easy in regulation and control.

Disclosed is a horizontal well external staged fracturing sand control string and method. A filling service string is tripped in an external staged fracturing and filling sand-control drain string. The external fracturing and filling sand-control drain string comprises a cementing external packer and a filling tool assembly connected in succession. The filling service string comprises a liquid-packing seal, a filling pipe, a filling converter, a flexible pressure tester, a rotary positioning tool, sliding sleeve opening and closing tools, and a packing sealing assembly; the filling pipe, the filling converter, the flexible pressure tester, the rotary positioning tool, the sliding sleeve opening and closing tools and the packing sealing assembly are mounted and connected onto the lower portion of the liquid-packing seal in succession; the lower end of the filling pipe and the lower end of a packing pipe are parallelly connected with the filling converter, and a liquid annulus is arranged between the filling pipe and the packing pipe. The filling tool assembly comprises an upper seal cylinder, a filling pipe external packer, and a filling sliding sleeve; the filling pipe external packer and the filling sliding sleeve are mounted and connected onto the upper seal cylinder in succession. According to the method, an open hole segment is packaged into two to ten parts; the method includes: A, tripping the filling service string in the external staged fracturing sand-control drain string; B, during filling of an upper layer, fitting a bottom packing sealing assembly and the seal cylinder to prevent filling liquid from entering a lower layer; C, repeating the step B to sequentially complete fractured gravel filling sand control for all layers.

The invention discloses a partial discharge ultrahigh-frequency detection Peano fractal antenna, wherein the partial discharge detection Peano fractal antenna comprises a dielectric layer and a conductor layer, wherein the conductor layer is laid on the upper surface of the dielectric layer; the conductor layer comprises a plurality of end-to-end bend conductor sections; the conductor sections are arranged according to the Peano three-stage fractal principle so as to form a three-stage radiation antenna element; the covering surface of the conductor layer on the dielectric layer is a rectangular surface; the side length of the covering surface is the side length of the conductor layer; and the conductor sections are provided with feeding points. The Peano fractal antenna provided by the invention has good direction property, is wide in frequency band, has small standing-wave ratio, is convenient for impedance match, and can meet the requirement of transformer partial discharge on-line monitoring ultrahigh-frequency detection.

The invention relates to a maize picker principle and a device arranged on a cropper, and is an agricultural machine. Compared with the current stripping by means of squeezing and rubbing forcibly with a principle of roll rotating and rubbing, the invention is characterized in that when the tip part of a maize plant turns towards a stripper intercept rod and operates reversely from the rod, the corn ear can be toggled from the tip downwardly and steered by the stripper intercept rod, leading the ear to be separated from the plant in the natural direction. The invention has the advantages that the ear can not be impacted and any position of the ear can not be rubbed to cause an injury in the picking process; the picking efficiency can be greatly improved; the energy consumption is lowered in a large scale.

The invention relates to a kind of hydraulic feedback oil-well pump with a long round plug and passageways for oil-entering and sand-depositing, strong guard against dense and, includes sealing total five and double passageways structure of oil-entering and sand-deposition. The trait of the pump is fixing a long plug sealing system between shaft-plug and tube, and fixing a passageway structure of oil-entering and sand-depositing between pump tube and tube outside. This equipment is used to enhance the usefulness of the pump, enhance the function avoiding dense and sand, prolong the using life. The invention has reasonable design, simple structure, easy-making, and convenient-using, efficient and good sealing function; entering passage is separated from depositing passageway, not gather in the tube as the routine pump do, the oil tube pole avoids buried by sand, Even if under the condition that oil is buried in sand, the pump can also produce with sand. The life span of this pump is three to five times more than the routine one.

The invention discloses a small-loop antenna for ultra-high-frequency detection of partial-discharge. The small-loop antenna comprises a dielectric layer, a conductor layer, a matching resistor and a feed terminal, wherein conductors are uniformly wound on the surface of a magnetic core; and the feed terminal is in parallel connection with the matching resistor and is used for feeding in a coaxial feeding manner. The small-loop antenna disclosed by the invention has the advantages of good directivity, wide frequency band, small standing-wave ratio and convenience in impedance matching, thus being capable of meeting the requirements on the online-monitoring ultra-high-frequency detection of the partial discharge in a power transformer.

The invention discloses a ducted shaftless power generation device and relates to the field of power generation. A technical problem is solved by providing the ducted shaftless power generation devicecapable of using pressure difference during natural gas production and transportation to generate power. An adopted technical scheme is that the ducted shaftless power generation device comprises a gas inlet pipeline, a throttle valve, a pressure difference power generation system and a gas exhaust pipeline; the throttle valve and the pressure difference power generation system are connected between the gas inlet pipeline and the gas exhaust pipeline in series; the pressure difference power generation system comprises a stator and a rotor; the two ends of the stator are correspondingly sealedby using cover plates; the two cover plates are correspondingly a gas inlet end and a gas exhaust end of the power generation system; a stator coil is arranged in the stator; the internal side of thestator is connected with the rotor through a rotating piece; a rotor magnet is arranged in the rotor; an impeller is arranged on the internal side of the rotor; and the impeller is fixedly mounted onthe internal side of the rotor. As the middle part of the stator and the middle part of the rotor are shaftless, a gas flow passage is smooth, the resistance of the gas flow passage is small, and maximized energy conversion is realized. As the heat generated by the pressure difference power generation system is brought away with gas, a high temperature phenomenon is avoided.

The invention discloses an automatic water removal device for an elongated porous workpiece. The automatic water removal device comprises a rack and a workpiece support seat, wherein a motor is arranged on a length-direction side surface of the rack; two linear guide rails which are horizontally arranged in parallel are arranged on a width-direction side surface; a screw rod parallel to the two linear guide rails is arranged between the two linear guide rails; a sliding block is arranged on the screw rod; an air-blow pipe is fixed on the sliding block; a plurality of water cutting air nozzles are arranged in a pipe opening of the air-blow pipe; the workpiece support seat is arranged on a cleaning equipment bracket and is parallel to the linear guide rails; and the and workpiece support seat is provided with a plurality of workpiece locating blocks. According to the automatic water removal device, the problems that the workpiece is porous in surface and water is automatically removed can be effectively solved; the effect after water removal is good; the omission phenomenon is avoided; by using the water removal device, the problem that water removal is incomplete in a conventional method can be effectively solved; automation is achieved; the efficiency is improved; the labor intensity is reduced; the operation is simple; and the cost is low.

The invention relates to a rotary demagnetization device, and provides a rotary demagnetization method for a medium and large bearing ring under an erection state, wherein the size range of the medium and large bearing ring (4) is 300-1000mm, and the maximum width of the medium and large bearing ring is set as D. The rotary demagnetization device comprises a demagnetization box (1), an operation face plate (2) and driving guide rollers (3). The bearing ring to be demagnetized is erected and tightly attached beside the operation face plate and located on the two driving guide rollers, the demagnetization box is started to produce a magnetic field, frictional force generated by the two driving guide rollers on the bearing ring (4) is higher than magnetic attraction force generated by the magnetic field, the demagnetized bearing ring is tightly attached to the operation face plate under rotation of the two driving guide rollers in the same direction to rotate at a constant speed in the reverse direction, and the bearing ring achieves uniform demagnetization in the rotary demagnetization device because of the constant-speed rotation in the reverse direction. The rotary demagnetization device is high in universality, does not occupy large workplaces, widens the demagnetization range and greatly improves demagnetization efficiency.

The invention provides an automatic compensation type gapless well mouth sealing device which comprises a plurality of first sectioned type sealing rings, a primary sealing box, a plurality of second sectioned type sealing rings, a secondary sealing box and a connecting body. The primary sealing box is provided with a conical inner side wall and arranged outside the first sectioned type sealing rings in a sleeving manner. The second sectioned type sealing rings are located below the first sectioned type sealing rings. The secondary sealing box is provided with an inverted-cone-shaped inner side which is matched with an inverted frustum formed by the second sectioned type sealing rings in shape. The second sectioned sealing rings are sleeved with the secondary sealing box. The primary sealing box and the secondary sealing box are sleeved with an outer ring of the connecting body. The automatic compensation type gapless well mouth sealing device is good in sealing performance, leakage, pollution and potential safety hazards are avoided, no components need to be replaced within the period, and continuous, normal and safe production of an oil well can be ensured.

The invention relates to a water-saving cover structure of a toilet flushed by high-pressure water in a closed manner, and belongs to the technical field of water-saving sanitary ware. The technical scheme includes that an annular flushing pipe is arranged on the inner side of an annular ring, a water inlet pipe (16), a switch (6), a water outlet pipe (17) and the annular flushing pipe (15) are sequentially connected with one another, and the annular flushing pipe is provided with downward water spray nozzles (18); and the flushing water flows through the water inlet pipe, the switch, the water outlet pipe, the annular flushing pipe and the water spray nozzles sequentially and then is ejected, a closed cavity is formed in a toilet bowl, and the high-pressure water flushes the toilet bowl. The water-saving cover structure has the advantages that the toilet bowl can be flushed via an external pipe network directly, the closed cavity is formed in the toilet bowl, and the water-saving cover structure is good in flushing effect, low in water consumption and manufacturing cost, free of leakage, simple in structure and reliable in using effect, not only can be used for manufacturing a novel product, but also can be used for modifying a used toilet.

The invention provides a method, a work node and a system for actively receiving a task and a non-volatile storage medium. The system comprises a data center and a plurality of work nodes, wherein each of the plurality of work nodes periodically receives a task which belongs to the work node from the data center and hands over a task which does not belong to the work node at the same time. Each work node periodically transmits a local task list to the data center so as to be used for updating configuration information of the data center. According to the invention, each work node in a cluster formed by a plurality of work nodes is ensured to receive a task which belongs to the work node. Meanwhile, the heterogeneous degree of the whole cluster architecture is reduced, and the work nodes are facilitated to be dynamically added or deleted in the cluster.

The invention discloses an air lift biologic generator for sewage treatment. The air lift biologic generator structurally comprises an air lift reaction box, a defoamer, a water outlet pipe, an air pump, a lifting upper cover and a water inlet pipe, wherein the water outlet pipe is arranged at the left end of the air lift reaction box and is buckled and connected with the air lift reaction box; the front side of the air lift reaction box is provided with the defoamer and is locked and connected with the defoamer; when the equipment is used, through the arrangement of a filler cabin mechanism,the condition that when an air inlet pump is closed, a part of sewage frequently and easily flows back into the air inlet pipe through a gap is avoided; because the water quality is poor, bacteria canbe easily generated in the air inlet pipe; the subsequent sewage conversion is not facilitated; fillers are directly thrown into a reaction tank by a traditional generator for adsorption reaction; when filler needs to be replaced, the operation cannot be performed in dead corners; the trouble of fishing-up is caused; the equipment can conveniently collect the filler while enabling the filler to fully exert an adsorption effect; water is effectively prevented from entering the air inlet pipe.

The invention discloses a wear-resistant and erosion-resistant screw drill for in-situ mining of oil shale and a machining technology. The wear-resistant and erosion-resistant screw drill comprises the following technology steps of (1) manufacturing a non-rubber synthetic neck bush, specifically, adding 10%-15% of polytetrafluoroethylene, 8%-12% of 3-12 millimeters aramid fiber 1313, 10%-18% of silicon carbide fiber with the diameter of 0.5-1.2 micro meters and the length of 30-160 micro meters and 15%-25% of polymethyl methacrylate into a mixer, mixing and stirring at a high speed for 0.5 hour, performing high-speed shearing, adding 30%-35% of styrene into the uniformly stirred mixture, adding 3%-4% of a diethylenetriamine solubilizer, 2%-5% of a molybdenum disulfide additive, 3%-5% of a vulcanization accelerator and 2%-4% of a dioctyl sebacate softener into an internal mixer, mixing for 2-2.5 hours at the temperature of 210-280 DEG C, and vulcanizing for 12 hours at the vulcanization temperature of 160-190 DEG C to prepare a non-rubber synthetic lining material; and (2) manufacturing a motor stator metal shell, a motor rotor and a rubber locking sleeve.

The method includes steps: base station BTS records and stores notification list number (NLN) sent at latest one on notification channel NCH and page channel PCH; within one dispatching cycle of NCH/PCH channel, if receiving direction of new notification message of initiating new voice broadcast service (VBS) and/or voice group call service (VGCS) sent from base station controller (BSC), then BTS carries NLN different from the stored NLN when carrying out dispatch next time on NCH/PCH channel; after receiving NLN different from the previous NLN, mobile station monitors NCH channel. The invention also discloses equipment and system corresponding to the method. The effective simplified mechanism in the invention for monitoring NCH reduces load received by mobile station effectively, and ensures mobile station can obtains message in time when new VBS or VGCS is initiated at network side.