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150results about How to "Eliminate failure" patented technology

Dynamic fault detection system for dual controller disk array

Disclosed is a dynamic fault detection system for a double-controller disk array, belonging to computer storage technical field and solving the problems that a current fault detection system requires large amount of sample information or demands the sample to meet a specific probability distribution and is large in load of the storage system and complicated in calculation process and is unstable. The dynamic fault detection system consists of a primary controller and a secondary controller which are parallel; palpitation fault detection is carried out between the primary controller and the secondary controller through a second kilomega Ethernet interface and data synchronization is carried out between the primary controller and the secondary controller through an optical-fibre channel; and a palpitation module, an information monitoring module, a fault switching module and a service monitoring module are respectively loaded on the primary controller and the secondary controller. The dynamic fault detection system adopts double palpitation detection mechanisms to avoid single-point fault caused by failure of single palpitation detection. A dynamic palpitation setting mechanism is adopted, thus reducing the spending of the system; the fault switching process and the fault recovery process are totally transparent to the user; all the functional modules act on the application layer, so the system is easy to realize and use and has good flexibility and expansibility.
Owner:HUAZHONG UNIV OF SCI & TECH

Silicon carbon negative electrode slurry and preparation method thereof

ActiveCN109546127AIncrease the degree of network crosslinkingHigh bonding strengthCell electrodesSecondary cellsCyclic processCarbon nanotube
The invention relates to a silicon carbon negative electrode slurry and a preparation method thereof. The silicon carbon negative electrode slurry comprises a silicon-based/graphite mixture, a binder,a single-walled carbon nanotube, carbon black and a coupling agent. The binder is polyacrylic-acid-based polymer containing a carboxyl functional group. According to the invention, the silicon carbonnegative electrode is modified by using the polyacrylic-acid-based polymer containing a carboxyl functional group and the coupling agent under coordination, so that the expansion and contraction rateof the silicon carbon negative electrode is reduced, the conductivity of the silicon carbon negative electrode and the negative current collector copper foil as well as the utilization rate of the negative active materials are improved, and the cycle life of the battery is prolonged. Meanwhile, the single-walled carbon nanotube serves as an electric bridge, thereby eliminating the phenomenon of active material failure during the cycle process of the battery. According to the invention, a silicon carbon negative electrode slurry is prepared by combining a stepped binder adding method with a dry-wet method, so that the electrical property of the material is further improved. Moreover, the preparation process is simple and the silicon carbon negative electrode slurry and the preparation method thereof have the broad application prospects.
Owner:HENGDIAN GRP DMEGC MAGNETICS CO LTD

Electronic expansion valve

The invention provides an electronic expansion valve. The electronic expansion valve comprises a shell, a valve seat, a valve needle and a rotor assembly. The valve seat, the valve needle and the rotor assembly are located in the shell. The rotor assembly drives the valve needle to be matched with the valve seat. The inner space of the shell comprises a main valve cavity and an auxiliary valve cavity. The valve seat is located in the main valve cavity. The rotor assembly is located in the auxiliary valve cavity. The electronic expansion valve further comprises a filtration device. The filtration device is located between the main valve cavity and the auxiliary valve cavity to filter fluid entering the auxiliary valve cavity from the main valve cavity. Due to the fact that the electronic expansion valve comprises the filtration device which is located between the main valve cavity and the auxiliary valve cavity to filter the fluid entering the auxiliary valve cavity from the main valve cavity, impurities in a system where the electronic expansion valve is located cannot enter the auxiliary valve cavity; therefore, the problem that the electronic expansion valve loses efficacy due to the fact that the impurities enter the auxiliary valve cavity can be solved on the basis of ensuring that the main valve cavity and the auxiliary valve cavity communicate with each other.
Owner:ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD

Soundproof-cotton gluing machine application method

The invention discloses a soundproof-cotton gluing machine application method and belongs to the technical field of gluing machines. The soundproof-cotton gluing machine application method includes the steps of 1), equipment starting, namely respectively starting a gluing mechanism, a glue discharging mechanism, a recycling mechanism and a belt conveying mechanism on a soundproof-cotton gluing machine; 2), gluing, namely allowing glue flowing out from a glue discharging device to flow down along a gap between a gluing roller and a glue mixing roller and a to-be-glued rubber skin to be driven by the gluing roller to move sequentially in gaps of between a glue applying roller and the glue roller as well as between the glue applying roller and the glue mixing roller for gluing; 3), gluing completion, namely allowing the rubber skin coated with the glue to be conveyed to the tail portion of a conveying platform through a conveying belt, wherein the lower surface of the rubber skin is in friction contact with the upper surface of a cushion block, movement speed of the rubber skin is reduced, the rubber skin is taken away by workers, and gluing is completed. With the method, problems that gluing is uneven, waste glue cannot be effectively recycled and the like are solved.
Owner:河北蓝格隔音材料有限公司

Combined PDC-thrust ball bearing long-life transmission shaft assembly

The invention relates to a combined PDC-thrust ball bearing long-life transmission shaft assembly. The combined PDC-thrust ball bearing long-life transmission shaft assembly comprises a transmission shaft, a lower TC movable sleeve, a lower TC static sleeve, a thrust ball bearing group, a PDC bearing group, an upper TC movable sleeve, an upper TC static sleeve and a transmission shaft shell, wherein the lower TC movable sleeve sleeves part of the shaft head of the transmission shaft; the lower part of the lower TC movable sleeve is connected with the transmission shaft; the lower TC static sleeve is mounted on the outer circumference of the lower TC movable cover in a matched manner; the lower TC static sleeve is connected with the lower end of the transmission shaft shell arranged at the outer circumference of the lower TC static sleeve; an anti-falling half ring, which is coaxial with the lower TC movable sleeve, is arranged at the upper end of the lower TC movable sleeve; the thrust ball bearing group and the PDC bearing group are sequentially mounted on the transmission shaft from top to bottom in a matched manner; the upper TC movable sleeve sleeves the upper part of the transmission shaft; the upper part of the upper TC movable sleeve is connected with that of the transmission shaft; the upper TC static sleeve is mounted on the outer circumference of the upper TC movable sleeve in a matched manner; a universal water-saving cap is also fixed at the upper end of the transmission shaft. The combined PDC-thrust ball bearing long-life transmission shaft assembly has the advantage that the overall service life of a screw drill can be effectively prolonged.
Owner:德州景美石油机械有限公司

Wet desulphurization and smoke whiteness eliminating system

The invention relates to a wet desulphurization and smoke whiteness eliminating system, and relates to the fields of wet desulphurization technologies and smoke whiteness eliminating technologies. Thewet desulphurization and smoke whiteness eliminating system comprises an air-smoke heat exchanger, a desulphurization tower, a fan, a chimney, an air bypass, a smoke channel and an air channel, by means of hot air recirculation, air is preheated, then the air is used for exchanging heat with smoke, the smoke enters the desulphurization tower for desulphurization after being cooled, the heated airand the smoke subjected to desulphurization are mixed, temperature is elevated, the humidity is reduced, and the mixed air and smoke are discharged through the chimney, so that smoke whiteness eliminating is achieved. Compared with existing whiteness eliminating technology routes, the wet desulphurization and smoke whiteness eliminating system has the advantages that not only can the problems oflow-temperature corrosion, ash deposition and the like of smoke be effectively solved, but also system equipment is simple, the investment is little, whiteness eliminating modification is simple and easy to implement, and a whiteness eliminating effect is good, so that the wet desulphurization and smoke whiteness eliminating system has excellent economic benefits and social benefits.
Owner:TIANJIN HUASAIER HEAT TRANSFER EQUIP

Flow adjusting device capable of changing plunger volume

The invention relates to a flow adjusting device capable of changing a plunger volume. The flow adjusting device is installed on a pump body (2) at the hydraulic end of a plunger reciprocating pump, located at one side, opposite to a plunger (1), of the plunger reciprocating pump, and is located inside a coaxial hole in the same central line of the plunger (1) of the plunger reciprocating pump. The flow adjusting device comprises an adjusting sleeve (12), an adjusting rod (13), and an auxiliary plunger (4) which is arranged on the end portion of the plunger of the plunger reciprocating pump coaxially. The flow adjusting device is characterized in that a plunger hole is formed inside the end portion of the plunger (1) of the plunger reciprocating pump, one end of the auxiliary plunger is arranged inside the plunger hole, the other end of the auxiliary plunger is installed inside a valve core (7) in a sliding, sealing and matching mode, the valve face of the valve core (7) can be matched with the valve face of the adjusting rod to realize the purpose of opening or closing of the valve face of the adjusting rod, and the auxiliary plunger (4) can move reciprocally under the driving of the plunger (1) and can move into and out of a through hole (131) inside the adjusting rod (13). The flow adjusting device is applicable to plunger reciprocating pumps with high pressure and large flow.
Owner:NINGBO HELI MECHANICAL PUMP CO LTD

Production method of GaN-based white LED epitaxial structure

A production method of a GaN-based white LED epitaxial structure includes the steps of preparing a monocrystalline or polycrystalline aluminum nitride buffer layer on a rare earth element doped YAG (yttrium aluminum garnet) ceramic or monocrystalline substrate by means of hydride vapor phase epitaxy; growing a GaN-based LED epitaxial structure on the monocrystalline or polycrystalline aluminum nitride buffer layer by means of metal-organic chemical vapor deposition. The GaN-based LED epitaxial structure comprises a low-temperature GaN buffer layer, a high-temperature GaN layer, an N-type GaN layer, an InGaN / GaN multiple quantum well active area, an AlGaN electronic barrier layer, a P-type GaN layer and a high-doped P-type or N-type electrode contact layer sequentially from bottom to top. The GaN-based LED epitaxial structure has the advantages that optical and physical features of fluorescent material, such as doping, thickness and quality, can be accurately controlled, integration of the fluorescent material high in repeatability and uniformity is achieved, and the problem that in traditional phosphor coating, unavailable non-uniform phosphor content occurs to the different parts of a same wafer and the different wafers due to the production process is solved.
Owner:XI AN JIAOTONG UNIV
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