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71results about How to "Block complete" patented technology

Data processing apparatus security

A data processing apparatus operable to access data values, each data value being associated with a respective address value is disclosed. The data processing apparatus comprises: a processor operable to process an instruction which causes a data access request; a main memory operable to store data values, said main memory having a region of secure data values; a cache operable to store previously accessed data values; and cache interface logic comprising: data transaction logic operable to receive a data access request from said processor requesting a data value be accessed in said cache, said data access request having an address value and a security attribute associated therewith; and security determination logic operable, in the event that said security attribute indicates a non-secure data access request, to determine whether said non-secure data access request is associated with said region of secure data values by interrogating a data region allocation table and, in the event that said data region allocation table provides an indication that said address value is not associated with said secure data region, to enable said data access request to complete. By determining whether the non-secure data access request is not associated with the region of secure data, it is possible to ensure that no non-secure data accesses occur for address values within a secure region.
Owner:ARM LTD

Construction structure and method for plugging water and sand gushing from foundation pit base

The invention provides a construction structure for plugging water and sand gushing from a foundation pit base. The construction structure comprises a steel sleeve, a concrete cover plate, a groutingreinforcing layer placed below the concrete cover, a concrete bottom plate and a concrete backfill layer of the bottom plate; the concrete construction method specifically comprises the following steps that the steel sleeve is installed with a water and sand gushing point as the circle center, and the bottom of the steel sleeve extends to the position 1m below the foundation pit base; waterstop ring plates are installed on the middle part and the upper part of the steel sleeve; high-grade early-strength concrete is poured into the steel sleeve to form the concrete cover plate, and after the final setting of the concrete, and grouting reinforcement of a disturbed soil layer is carried out within the range of the depth range of 1.0 m below the bottom of the cover plate within the scope of the cover plate of the concrete cover plate in the periphery of the steel sleeve; then a drain valve in the side wall of the steel sleeve is opened, and a sleeve opening of the steel sleeve is plugged through a sealing flange steel cover plate; and finally, the drain valve in the side wall of the steel sleeve is closed, and grouting into the steel sleeve is carried out for plugging the water gushingthrough a grouting pipe reserved in the steel cover plate. According to the construction structure and method for plugging the water and sand gushing from the foundation pit base, the plugging speedis high, the effect is good, the cost is low, and the control effect of a water gushing range is remarkable.
Owner:URBAN MASS TRANSIT ENG CO LTD OF CHINA RAILWAY 11TH BUREAU GRP

Method for sealing foundation pit pressure reduction well

The invention discloses a method for sealing a foundation pit pressure reduction well, which relates to blockage for a deep foundation pit pressure reduction well. The well sealing method comprises the following steps: (1) putting a grouting pipe into a well pipe to a bearing water layer I, and reserving a clearance between the bottom end of the grouting pipe and the bottom end of the well pipe; (2) filling a melon seed shaped sheet to an interface between a stable waterproof layer I and a bearing water layer I; (3) mounting a closed ring on the layer filled with the melon seed shaped sheet; (4) casting plain concrete into the well pipe above the closed ring; (5) grouting the well pipe under the closed ring by using the grouting pipe through pressure to fully block the clearance between the well pipe and a well hole at the interface between the stable waterproof layer I and the bearing water layer I; and (6) casting floor concrete to the whole foundation pit bottom plate. The method has the advantages that the method is simple to implement, the process is simplified and the expense is not increased; moreover, the pressure reduction well is thoroughly blocked at the interference between the stable waterproof layer I and the bearing water layer I, and the risk of bearing water leakage does not exist.
Owner:SHANGHAI JIANKE ENG CONSULTING

Temporary plugging composition of oil layer and application method

The invention discloses a temporary plugging composition of an oil layer and an application method of the temporary plugging composition. The temporary plugging composition comprises 2-20 parts by weight of cleaning diverter XT-25A and 10-20 parts by weight of sodium salicylate and also further comprises 2-10 parts by weight of acetic acid, 1-10 parts by weight of ammonium chloride and 80-97 parts by weight of water. According to the temporary plugging composition of the oil layer, disclosed by the invention, after being injected into a stratum, a temporary plugging solution made of the cleaning diverter XT-25A and the sodium salicylate preferentially enters high-permeability pores; after the temporary plugging solution is converged with stratum water, the viscosity of the temporary plugging solution is instantly increased, so that the purpose of limiting and preventing subsequent liquid from permeating and flowing along a water flow channel with a large hole channel is achieved; in the event of encountering an ultra-large hole channel or a cracked stratum, based on injection of the temporary plugging solution, acetic acid, ammonium chloride and water are made into cross-linked fluid and injected into the stratum; the cross-link fluid and the temporary plugging solution are converged to carry out cross-linking reaction, so that high-intensity gel is formed; large-hole, high-permeability or cracked stratums can be thoroughly plugged; filtration of transformed liquid is avoided; and the formed high-intensity gel can be automatically broken within a short time in the event of being encountered with hydrocarbon or ethylene glycol monobutyl ether.
Owner:CHINA PETROLEUM & CHEM CORP +1

Bridge plug with low pumping friction resistance for horizontal well, and using method thereof

InactiveCN109138910AImprove pumping efficiencyReduce the risk of entrySealing/packingIdler-wheelLow friction
The invention discloses a bridge plug with low pumping friction resistance for a horizontal well, and a using method thereof. The bridge plug comprises a ball seat, a sealing rubber cylinder, a setting cylinder, idler wheels, a slip and a salvage base; the lower end face of the ball seat is connected with the sealing rubber cylinder; the upper end face of the setting cylinder is sleeved with the sealing rubber cylinder, and the lower end face of the setting cylinder is sleeved with the slip; the idler wheels are arranged on the outer wall of the setting cylinder; the lower end face of the slipis connected with the salvage base; and a through hole penetrates through the centers of the ball seat, the sealing rubber cylinder, the setting cylinder, the slip and the salvage base. The bridge plug is simple in structure, and an operating method is simple and convenient; through the idler wheels on the setting cylinder, moving of the bridge plug on the horizontal section is changed from large-friction-resistance transverse sliding into low-friction-resistance idler wheel rolling, thus the good effect of lowering the pumping friction resistance is achieved, and the pumping efficiency of the bridge plug can be improved; and certain passing capacity to resist casing deformation is achieved, and the risk of tripping in of the bridge plug due to casing deformation is reduced.
Owner:PETROCHINA CO LTD

Preparation method of konjak tofu

The invention relates to a preparation method of konjak tofu. The method is completed through nine major steps of cleaning, steaming, dicing, water milling, alkaline milling, pouring into a mold, steaming and boiling, drawing and rinsing. The method has the beneficial effects that firstly, peels of konjak tubers are steamed to be soft, so that peeling is convenient; the irritation of alkaloid on work personnel is reduced; meanwhile, pulp milling is also easier; konjak blocks are subjected to pulp milling through two major steps of first water milling and then alkaline milling; alkaline water can be directly in contact with konjak pulp particles; then, the konjak pulp particles are put into a special steaming and boiling forming box for the konjak tofu; then, the special steaming and boiling forming box is put into a steamer to be directly steamed and boiled; the konjak pulp can be simultaneously cooked, so that the elasticity is uniform; the texture is exquisite and uniform; small squares with spaces can be formed on the konjak tofu blocks; the rinsing for alkaline taste removal can be convenient; the clean water consumption and the labor can be greatly reduced. Therefore the manufactured konjak tofu has bright and gray color and luster; the block shape is complete; the elasticity is uniform; the tofu is fine, fresh and tender; the alkaline taste is fresh and pure; the konjak tofu is deeply popular in people.
Owner:重庆乐滋滋食品有限责任公司

Normal pressure drying method for preparing melamine aerogel and fiber type clay reinforced melamine composite aerogel

The invention belongs to the technical field of material manufacturing, and discloses a method for preparing melamine composite aerogel and fiber type clay reinforced melamine composite aerogel by a normal pressure drying method. Melamine resin is used as a main material, melamine gel and fiber type clay composite reinforced melamine gel are prepared through solvent heat treatment under the acidic condition, a catalyst is washed away through an alcohol reagent, and the melamine composite aerogel which is complete in block and good in mechanical property can be obtained through normal-pressure drying. The fiber type clay is adopted to reinforce the melamine composite aerogel, and the clay can construct a double-network structure in a melamine gel network, so that the aerogel with better mechanical properties is obtained. The material can be carbonized to obtain self-supporting carbon aerogel which can be used in the fields of catalyst loading, adsorption, energy storage, heat insulation and flame retardant materials and the like. The gel time is short, a normal-pressure drying method is adopted as a drying process, a large amount of organic solvent is not used for solvent replacement, the preparation process is simple, the preparation period is short, and the large-scale production requirement can be met.
Owner:HUAIYIN INSTITUTE OF TECHNOLOGY

Mechanical environment-friendly dedusting device

The invention discloses a mechanical environment-friendly dedusting device. The mechanical environment-friendly dedusting device comprises a box, wherein one side of the box is provided with an air inlet and an air outlet positioned above the air inlet. The top of the box is connected with a guard bar matched with the box. One side of the guard bar is provided with a ladder connected with the box.A center position of the top of the box is connected with a connecting arm positioned between the guard bar and the ladder. The top of the connecting arm is fixedly provided with a protecting cover.The bottom of the connecting arm passes through the box and is extended to the interior of the box. The bottom of the connecting arm is connected with a pipe through a rotating shaft. The bottom of the pipe is connected with an air blower installed outside the box. The bottom, adjacent to a support frame, of the air blower is fixedly provided with an annular groove. Two sides of the rotating shaftare connected with a filtering cloth bag positioned in the box. The bottom of the filtering cloth bag is provided with cleaning hairbrushes arranged in equal distance. A gap matched with the cleaninghairbrushes is installed between the cleaning hairbrushes. The beneficial effect is that the mechanical environment-friendly dedusting device is rational in design, convenient to use, and capable ofeffectively solving a problem of easy blocking in a dedusting process.
Owner:方鑫悦

Novel double-layer occluder

InactiveCN111820963AImprove stabilityAnatomically adaptableHeart valvesOcculdersHemolysisProsthetic valve
The invention discloses a novel double-layer occluder which includes an occluder body. A fixer is arranged at the upper end of the occluder body, and a connector is arranged at the lower end of the occluder body. The occluder body is connected to an external conveying steel cable through the connector, the occluder body includes an outer layer and an inner layer which are composed of metal wires,one of the ends of the metal wires of the inner layer and the outer layer are respectively fixed to the fixer, and the other of the ends of the metal wires of the inner layer and the outer layer are respectively fixed to the connector. The novel double-layer occluder has the advantages of good stability, high anatomical adaptability, not prone to hemolysis, and low valve influence, and the closureof paravalvular leak, patent ductus arteriosus and ventricular septal defect by a transcatheter intervention method is completed; the radial support force is high; the instrument structure is compact, red blood cells are not prone to passing, and occluder-related hemolysis is not prone to causing; after the instrument is deformed and fixed, residual parts on and below the paravalvular leak are few, the device is not close to an artificial valve, and the opening and closing of the artificial valve are not prone to influencing; and the damage to an approach blood vessel is small, and blood vessel complications are fewer.
Owner:ZHONGSHAN HOSPITAL FUDAN UNIV
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