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 provides an automatic metering and accounting method and system based on BIM and GIS technologies, and the method comprises the steps: S1, carrying out the decomposition of a working structure, and setting an organization, a working node and a business process in a project management system according to the decomposition of the working structure; S2, carrying out the engineering system decomposition, establishing a unified coding rule of subentry engineering, and establishing a data sharing channel in the BIM model; S3, establishing a data table standard library for quality assurance, automatic output value statistics, automatic metering and cost accounting, and setting information pushing conditions; S4, building a BIM model according to an engineering system decomposition result and a construction drawing, associating a data table and an engineering quantity list, loading a GIS, and mapping the data table and the engineering quantity list to a project management system; S5, enabling the project management system to collect the statistical information and then complete electronic completion file archiving, and carrying out the distinguished visual display through different colors in the BIM model. The system realizes engineering metering automation through the method, and metering is accurate and efficient.

The invention relates to a gas life reverse-circulation negative pressure sand-cleaning method and apparatus; the gas life reverse-circulation negative pressure sand-cleaning method comprises the steps of injecting compressed gas into the sand-cleaning apparatus, allowing the compressed gas to expand in the sand-cleaning apparatus, with inner pressure of the sand-cleaning apparatus generates negative pressure relative to inner pressure of a shaft, charging deposited sand in the shaft and borehole fluid into the sand-cleaning apparatus under the action of negative pressure, and discharging from inside of the sand-cleaning apparatus via gas life so that sand cleaning is achieved. The gas life reverse-circulation negative pressure sand-cleaning apparatus comprises an outer spray pipe and an inner spray pipe that are concentric, the inner spray pipe and a gas-water mixer are arranged in the outer spray pipe in sequence, an annular space is formed between the outer wall of the inner spray pipe and the inner wall of the outer spray pipe, the sidewall of the outer spray pipe is provided with through holes, the length of the inner spay pipe is less than that of the outer spray pipe, the gas-water mixer is disposed at the bottom of the inner spray pipe, and the bottom of the outer spray pipe is provided with a drill-grinding structure.

The invention discloses a wellhead sealing device. The wellhead sealing device comprises a shell which can be arranged outside a sucker rod in a sleeving mode, a plurality of sealing rings located ina first sealing space and a second sealing space and elastic pieces arranged on the sealing rings; the shell is provided with the first sealing space and the second sealing space; the first sealing space is located above the second sealing space; the cross-sectional area of one of the first sealing space and the second sealing space is gradually increased from top to bottom, and the cross-sectional area of the other one of the first sealing space and the second sealing space is gradually reduced from top to bottom; the multiple sealing rings are up-down sequentially laminated and arrayed so asto be arranged outside the sucker rod in a sleeving mode, the sealing rings are provided with at least two parts separated from each other in the circumferential direction, a separation gap is formedbetween the at least two parts in the circumferential direction, and the separation gaps of the at least two sealing rings are staggered in the circumferential direction; and the elastic pieces exerts acting force for shrinking the separation gaps in the circumferential direction to the sealing rings. The wellhead sealing device can play a very good sealing role on an oil well wellhead.

The invention relates to an intelligent ultrahigh frequency sensor for electrical equipment partial discharge detection. The sensor comprises an enclosed Hilbert fractal antenna, a signal conditioning module, a wireless communication module and a power supply module, wherein the enclosed Hilbert fractal antenna comprises a lead paster, a medium substrate, a grounding layer and a feeding probe, the lead paster is designed on the basis of an improved three-order Hilbert fractal curve and comprises an enclosed radiation arm of which two ends are mutually connected, the signal conditioning module comprises an amplification filtering unit, a peak value holding module and a data acquisition module, and the wireless communication module employs a WIFI wireless emission module. The sensor is suitable for internal partial discharge detection of electrical equipment such as a high voltage switch cabinet, a transformer, an electrical cable and GIS equipment.

Provided is a wellhead pressure testing and seal examining device. The wellhead pressure testing and seal examining device comprises a leather cup shaft, a leather cup, a leather cup pressing cap, a connecting connector, a piston, a sealing shaft, a spring, a pressure regulating base, a rubber sleeve, a sealing sleeve, an inner pipe, a cone, a slip, a lower connector, a slip holder, a seal blocking, a return spring and a spring seat, low pressure seal examining and high pressure seal examining can be conducted on an installed blowout preventer on the scene, reliable working of the blowout preventer is guaranteed, piercing-caused leakages of the blowout preventer and the connecting position between the blowout preventer and a wellhead are avoided, non-leakage of the wellhead during blowout of an oil-water well is ensured, the oil-water well is under a controlling status, personal injury and death and property loss are avoided, and remarkable economic benefit is achieved. According to the wellhead pressure testing and seal examining device, anchoring in a casing pipe can be conducted during the high pressure seal examining, so that axial force generated by the high pressure during the seal examining is supported on the casing pipe, and all parts are not damaged due to the excessive axial force.

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 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 portable program control wireless body sound monitoring system. The portable program control wireless body sound monitoring system comprises a body sound monitoring instrument and a master control instrument, wherein the body sound monitoring instrument is used for collecting a body sound signal and performing wireless transmission on the collected body sound signal to the master control instrument; the master control instrument is used for receiving and analyzing data information collected from the body sound monitoring instrument, and transmitting a control commandof the master control instrument to the body sound monitoring instrument; the body sound monitoring instrument comprises a body sound collecting module, a power frequency restraining module, a commonmode noise reducing module, a preposition program control differential amplifying module, a program control frequency selecting module, a program control range module, an A / D conversion module, a control module and an RF module; and the master control instrument comprises a processor, an interface unit, a memory unit, a video displaying unit, a data analyzing unit, a stimulation control unit, a video monitoring unit, a system setting unit, a spectrum analyzing and displaying unit, a journal unit and a data recording unit. According to the portable program control wireless body sound monitoringsystem disclosed by the invention, a non-invasive continuous body sound monitoring system is established, a body sound signal of a healthy adult examinee under a normal respiration state is collected.

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.

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 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 lengthof 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 andconvenient 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 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 relates to a combined digging harvester for underground crops. The combined digging harvester for underground crops comprises a harvester body, a plowing and vine-pulling unit, and a conveying and soil-breaking unit; the harvester body comprises a bottom plate, a support arranged on the bottom plate and an upper vine-pressing plate arranged on the top of the support, and is used forfixing and supporting; the plowing and vine-pulling unit comprises a plow arranged on the lower end of the front end of the bottom plate, a vine lifter fixed at the front end of the upper vine-pressing plate and arranged above the plow, and a fruit-picking cutter fixed at the front end of the support and the rear of the plow; the inlet of the conveying and soil-breaking unit is arranged corresponding to the rear of the plow, and the conveying and soil-breaking unit comprises a soil-breaking passage and a plurality of soil-breaking wheels arranged on the bottom of the soil-breaking passage. Compared with the prior art, the combined digging harvester for underground crops has the advantages of good practicability, thorough fruit and vine separation, good adaptability, good soil breaking effect, cleanliness and the like.

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 present invention provides an automatic measurement and accounting method and system based on BIM and GIS technology, wherein the method includes S1. Decomposing the work structure, and setting the organization, work nodes and business processes in the project management system according to the work structure decomposition; S2 .Decompose the engineering system, establish a unified coding rule for sub-projects, and build a data sharing channel in the BIM model; S3. Establish a standard library of data tables for quality assurance, automatic statistics of output value, automatic measurement and cost accounting, and set information push conditions; S4. Build a BIM model according to the engineering system decomposition results and construction drawings, associate data tables and bills of quantities and load GIS, and map to the project management system at the same time; S5. After collecting statistical information, the project management system completes the electronic as-built document filing and uploads it to BIM The visual display of the model is distinguished by different colors; the system realizes the automation of engineering measurement through this method, and the measurement is accurate and efficient.

The invention relates to a gas life reverse-circulation negative pressure sand-cleaning method and apparatus; the gas life reverse-circulation negative pressure sand-cleaning method comprises the steps of injecting compressed gas into the sand-cleaning apparatus, allowing the compressed gas to expand in the sand-cleaning apparatus, with inner pressure of the sand-cleaning apparatus generates negative pressure relative to inner pressure of a shaft, charging deposited sand in the shaft and borehole fluid into the sand-cleaning apparatus under the action of negative pressure, and discharging from inside of the sand-cleaning apparatus via gas life so that sand cleaning is achieved. The gas life reverse-circulation negative pressure sand-cleaning apparatus comprises an outer spray pipe and an inner spray pipe that are concentric, the inner spray pipe and a gas-water mixer are arranged in the outer spray pipe in sequence, an annular space is formed between the outer wall of the inner spray pipe and the inner wall of the outer spray pipe, the sidewall of the outer spray pipe is provided with through holes, the length of the inner spay pipe is less than that of the outer spray pipe, the gas-water mixer is disposed at the bottom of the inner spray pipe, and the bottom of the outer spray pipe is provided with a drill-grinding structure.

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.