46results about How to "Extended failure time" patented technology

The invention discloses a spherical pump with static-pressure supports. The spherical pump comprises a cylinder cover (1), a cylinder block (5), a piston (2), a rotating disc (4), a main shaft (6) anda main shaft bracket (7); the cylinder cover (1) is connected with the cylinder block (5) to form a spherical inner cavity; a chute (601) is formed in the upper end surface of the main shaft (6); a slide shoe (403) at the shaft end part of the rotating disc is inserted in a chute (601) at the upper end of the main shaft (6); the piston (2) is movably connected with the upper end of the main shaft(6) after hinging with the rotating disc (4) to form a rotor; the static-pressure supports are arranged between two parallel side surfaces of the slide shoe (403) and the chute (601); and the static-pressure supports comprise first liquid flowing channels (404) and second liquid flowing channels (405) arranged on the rotating disc (4), and liquid pressure bearing grooves arranged on two parallelside surfaces of the slide shoe (403). The spherical pump has the advantages of eliminating the unbalance force in the operation process of the spherical pump and reducing the power consumption of thespherical pump.

The invention relates to a sealing ring, in particular to a sealing with a special shape groove, belonging to the field of shaft sealing of fluid machinery. The high-pressure side of the sealing ring is provided with a Pi-shaped groove which is two radial linear grooves, one peripheral linear groove or arc groove. The sealing ring adapts to the machinery operated by single rotation and needing bilateral switching, is used for liquid sealing or gas sealing, can effectively lower the sealing friction power consumption, prolongs the service life of a sealing device, and lowers the cost.

The invention relates to a gradient aluminum-based composite material for resisting a 30 mm armor-piercing bullet and a preparation method of the gradient aluminum-based composite material, and aims to solve the problems that a traditional ceramic composite armor structure is large in surface density and thickness and poor in frequent elasticity resistance are solved. The gradient aluminum-based composite material is of a three-layer gradient structure; the outer layer is made of an aluminum-based composite material which is reinforced by ceramic columns, ceramic balls and B4C ceramic powder which are densely arranged together; the middle layer is a high-volume-fraction B4C / Al composite material; and the inner layer is a medium-volume-fraction B4C / Al composite material. The method comprises the following steps: 1, densely arranging the ceramic columns; 2, filling gaps of the columns with the ceramic balls; 3, filling gaps with the B4C powder; 4, paving preform powder layer by layer; 5, carrying out compacting and cold-pressing to prepare a preform; and 6, melting molten aluminum, pressing the molten aluminum into the remaining gaps of the preform through pressure infiltration, and conducting pressure maintaining and demolding. Thea gradient aluminum-based composite material is used for the armor structure for resisting the 30 mm armor-piercing bullet.

An apparatus and method for monitoring and storing a status of a rechargeable battery pack in which the battery pack status is monitored by a device while the battery pack is functionally connected to that device, and then periodically updated to a non-volatile memory in the battery pack. The non-volatile memory may be connected in power isolation from the rechargeable cells, thereby ensuring that the battery is not drained during long periods of storage. The battery pack may also have a latch, which has to be released in order to remove the battery pack from any device to which it can be functionally connected. Releasing the latch may cause the battery status to be written to the non-volatile memory, ensuring that the battery's memory has up-to-date battery status information, whenever the battery is removed from the device regardless of any scheduled data writes.

The invention discloses a high-efficiency pulse load power supply and a voltage hysteresis control method thereof. The voltage hysteresis control method comprises the steps of acquiring a load end voltage of an interleaved parallel bidirectional buck / boost converter connected between the power supply and a load by using a sampling circuit; comparing the load end voltage of the interleaved parallel bidirectional buck / boost converter with a boost low-voltage given value, a boost high-voltage given value, a buck low-voltage given value and a buck high-voltage given value which are preset, and generating a corresponding square-wave pulse control voltage according to a comparison result; and amplifying the square-wave pulse control voltage and transmitting the amplified square-wave pulse control voltage to a switching tube in the interleaved parallel bidirectional buck / boost converter so as to control the on-off of the switching tube by using a voltage hysteresis control algorithm. According to the invention, a voltage hysteresis loop double-position control mode is adopted, and in the control mode, the action times of the switching tube in the system are obviously reduced, so that the switching loss of the system is reduced, and the working efficiency of the system is improved.

The invention discloses a novel memorization material on the basis of nanocrystalline high-dielectric coefficient (ZrO2)x(SiO2)[1-x] films, wherein, 0.2<=x<=0.9, and the materials can be used to prepare non-volatile memorization device and integrated circuits for information storage or other functions.The high-dielectric coefficient (ZrO2)x(SiO2)[1-x] films has the following characteristics that: when x is smaller, the films can remain amorphous after a high-temperature quick thermal annealing process; when x is bigger, ZrO2 nanocrystalline is partly crystallized and precipitated after the high-temperature quick thermal annealing process, simultaneously the film is a insulator with a high-dielectric coefficient and a large-forbidden band width, after substituting SiO2 by ZrO2, the size of devices is reduced and excellent insulativity is remained, therefore, a non-volatile memorization device with small size, high-density and stable performance can be prepared by using the films. The present invention provides method for preparing high-dielectric coefficient (ZrO2)x(SiO2)1-x films and the method comprises sintering ZrO2 and SiO2 with an appropriate proportion to produce ceramic target materials and preparing high-dielectric coefficient zirconium silica films by using a laser burst deposition method.

A lightweight cementitious composition containing from 22 to 90 volume percent of a cement composition and from 10 to 78 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g / cc to 0.64 g / cc, an aspect ratio of from 1 to 3, where after the lightweight cementitious composition is set it has a compressive strength of at least 1700 psi as tested according to ASTM C39. The cementitious composition can be used to make concrete masonry units, construction panels, road beds and other articles and can be included as a layer on wall panels and floor panels and can be used in insulated concrete forms. Aspects of the lightweight cementitious composition can be used to make lightweight structural units.

The invention discloses a polyether-ether-ketone modified composite material and belongs to the field of a high polymer material. The polyether-ether-ketone modified composite material comprises the following components in parts by weight: 100-120 parts of polyether-ether-ketone powder, 5-35 parts of silicon carbide powder, 5-25 parts of zirconium oxide powder and 0.1-3 parts of lubricating agent, wherein the fusing viscosity of the polyether-ether-ketone powder is at 100-650Pa.s. The invention discloses the polyether-ether-ketone modified composite material and a preparation method thereof. The polyether-ether-ketone modified composite material disclosed by the invention is modified by adding silicon carbide and zirconium oxide; the prepared polyether-ether-ketone modified composite material has the characteristics that the friction coefficient at least can be reduced by 0.06 and the tensile strength at least can be increased by 21MPa; and compared with a pure polyether-ether-ketone material, the polyether-ether-ketone modified composite material has the advantages that the service life and the use temperature are both promoted, the invalid time at least can be prolonged for 148h, the use temperature can be increased by 50 DEG C, the maximum use temperature can reach up to 310 DEG C, and the cost is reduced while the application field is widened.

The invention discloses a forging process for bearing rings made of M50 steel. The forging process comprises the steps of preheating, heating, temperature rising, forging, ash cooling, annealing and detection, wherein in the preheating step, tools and molds are preheated to 150-300 DEG C before blank making; in the heating step, manufactured blanks are heated to 810-850 DEG C from the normal temperature; and in the temperature rising process, the manufactured blanks and rolling rings are heated to 1120+ / -10 DEG C. Through inspection of forged pieces and machined products, the grain size of the products manufactured through the process after quenching reaches the third level (the standard being the second to fourth level), the mixed grain phenomenon is avoided, all the products are qualified after being subjected to water leaching and ultrasonic flaw detection of 0.4+16.5db-0.4+18db, and the hardness of the forged pieces is 210-225 HB. The technical requirements and application requirements for the products are met completely, the service life of bearings is substantially prolonged, and the endurance capability of engines is substantially improved and can reach more than 500 hours to the highest degree.

The invention discloses a power steering gear tie rod, which can prolong the failure time of the power steering gear tie rod when a splicing position between an inner tie rod and an outer tie rod has a fatigue crack, and can prompt the fatigue crack to a driver through reducing the sensitivity of the steering gear. The power steering gear tie rod is formed by splicing the inner tie rod and the outer tie rod, wherein one of the inner tie rod and the outer tie rod is provided with a circular blocking lug, and the other of the inner tie rod and the outer tie rod is provided with a pair of supporting arms which are distributed at the two opposite sides of the tie rod and extend towards the direction of the other tie rod; the supporting arms are distributed at the two opposite sides of the circular blocking lug, the positions at the two ends of the circular blocking lug between the two supporting arms and are respectively provided with a blocking frame, the positions positioned at the inner side of the end surface of the circular blocking lug on the two blocking frames are respectively provided with a blocking rod, the two blocking rods at the same blocking frame are distributed at two the opposite sides of the tie rod of the circular blocking lug, and a gap is formed between each blocking rod and the end surface of the circular blocking lug.

The application relates to an environmental-friendly glass floor made of waste glass. The environmental-friendly glass floor made of the waste glass comprises an anti-corrosion wear-resistant layer, an antibacterial antifreezing layer, glass, a fireproof sound insulation layer, a waterproof layer, a steel mesh, a mesh cloth, a resin layer, a base layer, and a finger pressure layer. The environmental-friendly glass floor made of the waste glass adopts the waste glass as the raw material of the floor, and the glass is a colorless, transparent, and tasteless raw material without heavy metal and radiation, so that the glass is safe and reliable, the structure of the environmental-friendly glass floor is simple, and production and installation are convenient.

A composite building panel that includes a central body, substantially parallelepipedic in shape, containing an expanded polymer matrix, having opposite faces, a top surface, and a bottom surface; at least one embedded framing stud longitudinally extending across the central body between the opposite faces, having a first end embedded in the expanded polymer matrix, a second end extending away from the bottom surface of the central body, and one or more expansion holes in the embedded studs between the first end of the embedded stud and bottom surface through which the polymer matrix expands. A concrete layer can optionally cover a portion of the top surface and / or bottom surface. The building panel can be positioned perpendicular to a structural wall and / or foundation to provide a floor panel. The second end of the framing studs can be embedded in a second central body to provide an insulated concrete form.

Provided is an accurate, fast and long-term stable fused CRAP. The electrode includes a positioning anchor, a silicone catheter, a sensor compartment and a connecting wire. The method monitors physiological information such as blood PPG, blood oxygen saturation, temperature and impedance of blood in the right ventricular cavity, and monitors blood temperature information, which is also a slowly changing metabolic rate, to provide cross-comparison with blood oxygen saturation information, improving monitoring accuracy of blood oxygen saturation. The rapidly changing right ventricular apical impedance information is monitored to improve rapid response ability of CRAP. The LEDs driving current is dynamically adjusted by monitoring the internal temperature of the PPG sensor and the impedance change of the attached biological tissue, which indirectly reflects thickness change of the attached biological tissue, thereby delaying the failure time of the PPG sensor.

The invention provides a manufacturing method for a brick machine mold and a spraying method used in the manufacturing process. The manufacturing method includes the following specific steps that water jet cutting is conducted on a chromium carbide composite wearproof steel plate through a water jet cutting method; the chromium carbide composite wearproof steel plate is treated through a grinding machine; common plates, transverse plates and longitudinal plates in an upper mold are machined, and a mold cavity is formed after machining; the chromium carbide composite wearproof steel plate is punched; and overall welding forming is conducted, correcting and straightening are conducted, and assembly of the formed object and a lower mold is conducted. According to the manufacturing method and the spraying method, the specific water jet cutting is selected to be used for machining the chromium carbide composite wearproof steel plate, damage of a great amount of heat radiated in cutting to the steel plate can be reduced, the cutting forming effect of the steel plate is improved, cutting quality is guaranteed, and cutting is perfect; and the water jet cutting method is simple in step, low in cost and suitable for being popularized on a large scale, one end of water-soluble glue is spread with a layer of wet dry-ice particles, and the wet dry-ice particles absorb heat generated in cutting so that moisture on the surface of dry ice can be frozen, so that the environment temperature is lowered, and the cutting effect is guaranteed.