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30results about How to "Eliminate penetration" patented technology

Horizontal bore cryogenic drilling method

A horizontal bore cryogenic drilling method includes in a first embodiment forming a pilot hole of a first select diameter along a desired path of the horizontal bore. A grindable casing is inserted into the guide bore. A cryogenic fluid is flowed through the grindable casing to form a freeze zone of frozen moisture adjacent the grindable casing having a second select diameter. A primary bore is formed having a third select diameter greater than the first diameter and less than the second select diameter within the freeze zone along the desired path of the horizontal bore with the grindable casing in place. The second diameter is selected to be sufficiently greater than the third select diameter to prevent collapse of the freeze zone. Another embodiment of the invention is a method of forming a horizontal bore in an earth formation including providing a drill string having a conduit communicating with a cutting tool for engaging the earth formation. A cryogenic fluid is flowed through the conduit and the cutting tool to drive the cutting tool and remove cuttings from a bore formed by the cutting tool. The cutting tool is directed into an earth formation and a freeze zone is formed in the earth formation in advance of the cutting tool by the cryogenic fluid flowing through the cutting tool. The cutting tool is then advanced into the earth formation to form the horizontal bore at a rate enabling continuous formation of a freeze zone in advance of the cutting tool of sufficient diameter to prevent collapse of the bore as the cutting tool is advanced.
Owner:CH2M HILL +1

Horizontal bore cryogenic drilling method

A horizontal bore cryogenic drilling method includes in a first embodiment forming a pilot hole of a first select diameter along a desired path of the horizontal bore. A grindable casing is inserted into the guide bore. A cryogenic fluid is flowed through the grindable casing to form a freeze zone of frozen moisture adjacent the grindable casing having a second select diameter. A primary bore is formed having a third select diameter greater than the first diameter and less than the second select diameter within the freeze zone along the desired path of the horizontal bore with the grindable casing in place. The second diameter is selected to be sufficiently greater than the third select diameter to prevent collapse of the freeze zone. Another embodiment of the invention is a method of forming a horizontal bore in an earth formation including providing a drill string having a conduit communicating with a cutting tool for engaging the earth formation. A cryogenic fluid is flowed through the conduit and the cutting tool to drive the cutting tool and remove cuttings from a bore formed by the cutting tool. The cutting tool is directed into an earth formation and a freeze zone is formed in the earth formation in advance of the cutting tool by the cryogenic fluid flowing through the cutting tool. The cutting tool is then advanced into the earth formation to form the horizontal bore at a rate enabling continuous formation of a freeze zone in advance of the cutting tool of sufficient diameter to prevent collapse of the bore as the cutting tool is advanced.
Owner:CH2M HILL +1

A high-definition video connector with good shielding effect and its use method

The invention discloses a high-definition video connector with good shielding effect and a use method thereof, relates to the technical field of high-definition video connectors, and aims to solve the problem that the magnetic shielding effect of the existing high-definition video connector is poor. The outer shell is composed of a permalloy inner shell, an eddy current shielding layer and an insulating rubber, and the eddy current shielding layer is fixed between the permalloy inner shell and the insulating rubber, the lower end of the outer shell is fixedly provided with a fixing block, and the outer shell An inner cavity is arranged inside, and a converging mechanism is fixedly installed at the middle position inside the inner cavity. A joint is installed at the lower end of the inner cavity, and a terminal is installed at the rear end of the joint. Both sides of the bottom of the joint Both sides are fixedly provided with slide rails, both sides of the rear end of the housing are provided with slide grooves, a shielding bottom plate is installed inside the fixed block, fixed columns are fixedly installed on both sides of the upper end of the fixed block, and the fixed column There are fixed bolts installed inside.
Owner:安徽兄弟电子有限公司

Sludge treatment system and process

The invention discloses a sludge treatment system and a process. Sludge paste with the moisture content of 50% to 60% can be obtained by adopting a slurry hopper and a press filter and can be dried into clods with the moisture content of 40% or less through a drying unit. A drying room and a hot air supply circulating mechanism can exert a relatively good drying effect, an extruding mechanism anda circulating conveying mechanism are combined, and thus, materials are uniformly tiled and heated and are uniformly dried. According to the sludge treatment system and the process, sludge can be thickened and dehydrated, the volume weight of the sludge is greatly reduced, the decrement of the sludge is achieved, and the pollution caused by liquid permeation and odor emission is eliminated. By designing the hot air supply circulating mechanism, the operation of an evaporator can be effective, a circulating hot air supply is relatively dry, the materials in the drying room can be deeply dehumidified, the effect is remarkable, the loss of heat energy caused by hot-cold offset is lowered, and the utilization ratio of energy is increased. The circulating conveying mechanism is ingeniously designed, the circulation of the circulating hot air supply is facilitated, the materials are heated and dried uniformly, the space usage is relatively low, and thus, the requirements of materials on a thorough drying course in a limited space are met.
Owner:江苏同益能源科技有限公司

High-definition video connector with good shielding effect and using method

The invention discloses a high-definition video connector with a good shielding effect and a using method, relates to the technical field of high-definition video connectors, and aims to solve the problem that an existing high-definition video connector is worse in magnetic shielding effect. An outer shell is composed of a permalloy inner shell, an eddy current shielding layer and insulating rubber, the eddy current shielding layer is fixed between the permalloy inner shell and the insulating rubber, and a fixing block is fixedly arranged at the lower end of the outer shell; an inner cavity isformed in the outer shell, and a bundling mechanism is fixedly installed in the middle of the interior of the inner cavity; a connector is installed at the lower end of the interior of the inner cavity, a terminal is installed at the rear end of the connector, and sliding rails are fixedly arranged at the two sides of the bottom of the connector; sliding grooves are formed at the two sides of therear end of the outer shell, a shielding bottom plate is installed in the fixing block, fixing columns are fixedly arranged at the two sides of the upper end of the fixing block, and a fixing bolt ismounted in the fixing column.
Owner:安徽兄弟电子有限公司

Surface sizing process for corrugated cardboard processing

The invention discloses a surface sizing process for corrugated cardboard processing. The process comprises the following steps: 1) preparation of a glue solution; 2) preparation of a bubble agent; 3)bubble glue solution preparation: the glue solution A and the bubble agent B are mixed, and poured on a colloid mill, and a double-mill kneading method is used to obtain the bubble glue solution C, and 4) a sizing process of the bubble glue solution: the surface of corrugated base paper is coated with the bubble glue solution C in a rolling brush manner, and drying with hot air is performed; a sizing machine is used to coat the bubble glue solution C; and surface bubbles are eliminated with a polyurethane scraper, leveling is performed, and then drying is performed to obtain finished corrugated paper. According to the process, the glue solution is foamed and then mounted on the corrugated paper surface for the first time, a new sizing process in which a relatively thin glue solution is smoothly mounted on the corrugated paper surface can be realized, and the smooth penetration of the glue solution into fiber pores is promoted by cooperating with the bubble elimination process. At thesame time, the adverse phenomenon that the corrugated paper is soaked by the relatively thin glue solution is avoided, the yield is high, the obtained corrugated paper has relatively high strength, and the application in the field of high-strength cartons is met.
Owner:CHUZHOU CIGARETTE MATERIALS FACTORY
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