192results about How to "Meet protection needs" patented technology

The invention discloses a protective coating for molten sediment on the surface of a thermal barrier coating and a preparation method thereof. The thermal barrier coating comprises at least one bonding layer and at least one ceramic layer, the surface of a high-temperature alloy matrix is coated with the bonding layers, and the surfaces of the bonding layers are coated with the ceramic layers. The ceramic layers making contact with the bonding layers are yttrium-oxide-based partially stabilized zirconium oxide layers. The surfaces of the ceramic layers are further coated with the protective coating. The protective coating is prepared from aluminum-oxide-based spraying powder through a supersonic-speed plasma spraying technique. The preparation method of the protective coating includes the steps of drying of the aluminum-oxide-based spraying powder, workpiece clamping, parameter adjustment, even preheating of the surface of the thermal barrier coating through plasma flames generated by a spray gun of ultrasonic-speed plasma spraying equipment, starting of powder feeding, and forming of the protective coating by spraying the aluminum-oxide-based spraying powder to the surface of the thermal barrier coating one to three times.

The invention discloses a constrained ceramic-metal composite bulletproof armored plate and a making method thereof. The constrained ceramic-metal composite bulletproof armor plate consists of a plurality of constrained ceramic-metal composite bulletproof units; each constrained ceramic-metal composite bulletproof unit comprises a metal back plate, a metal constrained plate and a ceramic block, wherein the metal constrained plate and the ceramic block are arranged on the metal back plate, the ceramic block is arranged in the metal constrained plate, and the ceramic block and the metal constrained plate are assembled and connected through interference fit. The constrained ceramic-metal composite bulletproof armored plate disclosed by the invention has a broad application prospect in variousbulletproof occasions of armed helicopters, armored cars, ships and warships, tanks and the like.

The invention provides a hidden type reinforcing node of a side span node of a wood structure traditional architecture and a preparation method of the hidden type reinforcing node, and belongs to the technical field of protection works for the wood structure traditional architecture. Beam column components are connected into a whole through connection long pull rods, reinforcing plates and fixing nuts which are installed inside a beam column node in a hidden mode, so that the pull-out resistance capacity and rigidity of the node are improved, and the appearances of the components are recovered by filling epoxy resin adhesives into notches. By means of the hidden type reinforcing node of the side span node of the wood structure traditional architecture and the preparation method of the hidden type reinforcing node, the bearing capacity of the node can be improved, the wood structure traditional architecture is protected, and the damage to the structural appearance caused by a former external reinforcing method is avoided.

The invention discloses a novel solar power generation balcony rail, which relates to the field of balcony rails, and comprises longitudinal rails, a horizontal rail, a foundation bed, a load-bearing handrail, a movable flowerpot and a solar power generation device. The longitudinal rails are arrayed above the foundation bed at equal distances; the horizontal rail is welded in the middle of the longitudinal rails; the load-bearing handrail is welded to the upper ends of the longitudinal rails; the solar power generation device comprises solar cell panels and storage batteries; the solar cell panels are arranged on the surface of the horizontal rail and are connected with the storage batteries through guide wires; a sliding chute is arranged on the load-bearing handrail; the movable flowerpot comprises fixed walls, a fixed slot, fixed bolts and a movable foundation bed; the movable foundation bed is embedded into the sliding chute; the lower ends of the fixed walls are fixed into the fixed slot through the fixed bolts. The novel solar power generation balcony rail can provide indoor power through clean solar energy, and the movable flowerpot is arranged, so that a user can conveniently perform pot plant, and the novel solar power generation balcony rail is practical in function and worth to be popularized.

A method for improving high-low voltage ESD protection performance by employing a well segmentation technology concretely comprises a well segmentation technology and a special metal wiring method toimprove the reliability of on-chip IC low-voltage ESD protection. A device 1 in one embodiment of the invention is mainly formed by a P substrate, a first N well, a first P well, a second P well, a second N well, a third P well, a third N well, a fourth P well, a fourth N well, a fourth P+ injection region and a fifth N+ injection region. Under an ESD stress effect, the well segmentation technology is employed so as to obtain a low-voltage ESD protection device of an SCR triggered by a diode, avoid generation of an avalanche breakdown effect at the internal portion of the device and reduce a triggering voltage of the device and so as to greatly reduce stray capacitance of the device and meet ESD protection demands of a radio frequency IC. Besides, the positions of the N+ injection region and the P+ injection region at the internal portion of the device are regulated to change the ESD current discharge path of the SCR structure, and the method provided by the invention combines the metal wiring design to regulate a maintenance voltage of the device.

The invention belongs to the technical field of petroleum development, and particularly relates to a sand prevention agent for achieving auto-aggregation of sand grains. The sand prevention agent comprises three parts including an auto-aggregation liquid, an auto-aggregation auxiliary agent and a sand consolidation agent. Main ingredients of the auto-aggregation liquid are natural polysaccharide compounds, and main ingredients of the auto-aggregation auxiliary agent are inorganic salt. The sand prevention agent achieves auto-aggregation of the sand grains through the synergistic effect among chemical agents of the sand prevention agent, the stratum sand grains can be packaged and clustered to be fixed to corresponding positions of the stratum, the consolidation effect is obviously improved, the actuating range is expanded, and a good sand consolidation effect can be achieved on fine-powder sand.

The invention discloses a method for preventing welding jam of an air film cooling hole. The method comprises the steps that 1), a graphite core is inserted into the air film cooling hole in a part needing repair welding; 2), repair welding is conducted on cracks or ablation portions of the part; and 3), after repair welding is completed, the graphite core in the air film cooling hole is mashed and taken out. According to the method for preventing welding jam of the air film cooling hole, the graphite core is selected as a protection material, and graphite has the beneficial effects of being high in melting point, high in temperature resistance, small in thermal expansion coefficient and soft but large in brittleness; in addition, the graphite has good lubricity; when the graphite core is used for protecting the air film cooling hole, molten metal on the welding portion cannot damage the shape and the size of the air film cooling hole because of the high temperature resistance and stability of the graphite; the situation that the graphite core expands and cannot be taken out due to high temperature generated by arc burn during welding is avoided; meanwhile, the graphite has soft and lubricating characteristics, and it can be guaranteed that the post-weld graphite is not likely to be stuck in the air film cooling hole; and even if the stuck phenomenon exists, the graphite core can be mashed into powder and taken out with a tool because of the large brittleness of the graphite core.

The invention discloses a clamping device for machining a thin-walled disc part. Preliminary clamping and positioning of the part is performed by a clamp body, a support is pushed to move backwards along a linear rail by a hydraulic cylinder, and the part is pressed by a floating gland, so that primary clamping of the part is realized; after the part is clamped, a pneumatic angular positioning mechanism retracts, a spindle of a machine tool rotates, the part rotates together with a rotating gland, and then a surface A, a hole B, a groove G, an external diameter F and a surface H of the part can be machined by the machine tool; and so long as a turning tool of the machine tool extends into the rotating gland via an axial through hole, a surface C, a groove F and a hole E of the part can be machined. Compared with the traditional technology, the clamping device provided by the invention can reduce the clamping frequency of the part, can realize turning of all machined surfaces of the thin-walled disc part by clamping the part once, effectively avoids part collisions caused by turnover between procedures, can remarkably improve the machining efficiency of the thin-walled disc part, ensures the machining accuracy of the part, improves the machining quality of the product, reduces the cost and improves the benefit.

The invention discloses a treatment method for high concentration organic waste liquid in sucralose production. The method includes: firstly conducting distillation concentration under reduced pressure on high concentration organic waste liquid twice, separating a solvent, water and a light component, and removing an inorganic salt from the solution, then adding strong base for backflow, then conducting reduced pressure distillation to separate the organic small molecule structure light component obtained by alkali degradation, finally adding a polymeric flocculant for flocculation precipitation of the remaining small quantity of macromolecular organic matter, performing concentration and conducting treatment with a strong oxidant, degrading the macromolecular organic matter into small molecule organic matters, and then conducting deep treatment in a biochemical pool. The method provided by the invention completely realizes degradation of high concentration organic waste liquid, enhances the economic benefits, can practically and effectively meet the environmental protection demands, also lowers the wastewater treatment cost, and provides a new way for the high concentration organic waste liquid produced in the industrial production process of sucralose.

The invention discloses a manufacturing method for an aluminum-based electromagnetic absorption plate. The method comprises the following steps of: coating a protective membrane on the surface of an aluminum or aluminum alloy workpiece, and performing sand blasting and anodic oxidation on the workpiece to form a plurality of conical structures with micropores on the surface of the plate; and spraying or dip-coating an electromagnetic wave-absorbing material on the surfaces of the structures. The manufacturing method is favorable for decomposition and consumption of electromagnetic wave energy, realizes the high-efficiency electromagnetic absorption performance of the aluminum-based electromagnetic absorption plate, is low in manufacturing cost, and can be applied to the fields of buildings, electron and military industry on a large scale.

The invention discloses a bidirectional high-voltage ESD protection device of a full-symmetric LDMOS triggered SCR structure, and belongs to the field of electrostatic discharge protection and surge resistance of integrated circuits. The protection device is mainly composed of a P substrate, a deep N well, a first P well, an N well, a second P well, a first P + injection region, a first N + injection region, a first polysilicon gate, a first thin gate oxide layer, a first field oxide isolation region, a second P + injection region, a second field oxide isolation region, a second polysilicon gate, a second thin gate oxide layer, a second N + injection region and a third P + injection region. The two NLDMOSs are embedded to form an auxiliary trigger SCR current path in which the on-state NLDMOS and the off-state NLDMOS are connected in series. The voltage withstanding capability of the device is improved, so that the device meets the ESD protection requirement of a high-voltage power supply domain, the ESD robustness of the device is enhanced, the discharge efficiency of the device in unit area is improved, the carrier concentration of a base region in a parasitic SCR structure is reduced, and the maintaining voltage of the device is improved.

The invention discloses a blood collection and transfusion integrated device which comprises a blood collection device. The blood collection device comprises a blood collection bag (6) and a blood collection needle (1) connected with the blood collection bag (6) through a blood collection tube (4), the blood collection bag (6) is communicated with a leukocyte removal soft shell filter (8) through a blood delivery tube (7), the leukocyte removal soft shell filter (8) is communicated with a blood storage bag (13) through the blood delivery tube (7) at back of the leukocyte removal soft shell filter (8), the blood storage bag (13) is communicated with a scalp needle (21) at the tail end of a blood transfusion tube (14) through the blood transfusion tube (14), and a blood filter (18) and a flow adjusting device (19) are sequentially arranged on the blood transfusion tube (14). The blood collection and transfusion integrated device has the advantages of being small in size, light in weight, complete in function, suitable for use and easy to use and being combined to the high degree. The blood collection and transfusion integrated device reflects a series of advanced ideas on blood collection devices, leukocyte filtering devices, blood transfusion operation, biological safety protection and the like, and is clear in identification and convenient to operate.

A solving method of 4 fibre Multiplex Section Shared Protection Rings fault in optical transmission network. It concerns with following field; 1. appoints certain transmission channel and transmit echo signaling. 2. The net element which is received order that commands PS-R ring inverting the instruction of administration of networks sends the corresponding net elemtn request signaling; after the corresponding net element receives the requests, returns the responses signaling; The net element that neither receives order from administration of networks nor receives request signaling send close-in net element a default signaling. 3. judge transmit net element whether receives PS_R ring inverting the instruction of administration of networks at direction 1 or 2; if it is received then send close-in net element request signaling that corresponds to FS-R; if not enter 4.