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40results about How to "Wide range of expansion" patented technology

Fracture-assisted combustion of oil in-situ stimulation thickened oil exploiting method

InactiveCN104265258AIncreased air injection capacityExtended heating rangeFluid removalCombustionFlue gas
The invention relates to a fracture-assisted combustion of oil in-situ stimulation thickened oil exploiting method. The method comprises the steps of conducting hydrofracture transformation on the oil reservoir on the perforating section of an oil well casing, forming vertical artificial fractures on both wings of a shaft, adding fracturing propping agents with which the fractures are filled, and conducting sieve tube gravel pack completion inside the casing; making the bottom hole temperature reach the ignition temperature of crude oil by means of the firing technique to ignite the oil layer of an oil well; injecting air into the oil well continuously by means of an air compressor; conducting soaking after air injection; opening the well for stoping. The method is mainly applied to low-permeation heavy oil reservoirs, thin-bedded heavy oil reservoirs and thin-interbed heavy oil reservoirs. Compared with the prior art, the method has the advantages that combustion of oil in-situ stimulation air injection speed and monocyclic cumulative injection rate can be increased by over three times, thermal front and flue gas front swept volume is increased by over three times, well yield is increased by over two times, and cyclic cumulative production is increased by over three times.
Owner:BEIJING PUXIN PETROLEUM TECH DEV

Methods for solid phase processing of tubes and medical devices made from the processed tubes

A polymer tube is processed using a solid phase process for improving mechanical characteristics of the tube, including radial strength and stiffness. The tube is made into a scaffold possessing improved mechanical and use characteristics, such as a reduced crimped profile and improved deliverability.
Owner:ABBOTT CARDIOVASCULAR

Optimization design method for shape of curve groove decoupling structure of array antenna

The invention belongs to the field of wireless communication antennas, and relates to a curve groove decoupling structure shape optimization design method of an array antenna. By adopting the method provided by the invention, the array antenna containing the curve slot decoupling structure has good decoupling performance while meeting the design requirement of a specific frequency band. The curve groove decoupling structure is simple in overall structure and small in size, and the structural form of the curve groove decoupling structure is achieved by establishing a design method for optimizing the shape of the curve groove decoupling structure. A curve shape parameter for determining the structural form is obtained by dispersing an implicit distance function between the curve and a straight line of the corresponding linear groove decoupling structure through a multi-order trigonometric function. The design method is wide in design range and high in applicability, the mutual coupling effect of the array antenna is reduced by designing curve shape parameters of the curve grooves, the isolation degree between array elements of the array antenna is greatly improved, and therefore the decoupling performance of the array antenna is achieved.
Owner:DALIAN UNIV OF TECH

Electric scissor type extension cabin

The invention discloses an electric scissor type extension cabin. The electric scissor type extension cabin comprises an inner frame, an extension cabin and a fixed cabin. The inner frame is fixedly connected in the fixed cabin. When the extension cabin is completely opened, one side of the inner frame is fixed connected with the extension cabin. The inner frame is provided with a push-up device.The extension cabin is composed of a top plate, a bottom plate, a side plate and an end plate. Pulleys and hinges are arranged on the two ends of the top plate and the bottom plate, and electric extension devices are arranged on two sides of the inner frame, wherein the electric extension devices and an electric push rod of the push-up device are all controlled by a programmable logic controller,and the extension cabin can be pushed out of the fixed cabin horizontally when extending by the electric extension devices, so that the rapid extension of the cabin is realized. An electric push-up mechanism is mounted in a sectional material at the bottom of the inner frame of the fixed cabin, and the problem of dead spots of the extension cabin structure can be solved when the fixed cabin is closed. The electric scissor type extension cabin has the characteristics of simple structure, convenient operation and easy maintenance, and has a great prospect of popularization and application.
Owner:KF MOBILE SYST +1

Self-elimination type spiral root-expanding soil-fixing method for preventing water and soil loss of side slope

The invention discloses a self-elimination type spiral root-expanding soil-fixing method for preventing the water and soil loss of a side slope, and belongs to the field of water and soil loss of sideslopes. A spiral root-expanding soil-fixing basket serves as a medium, and seeds with developed root systems are planted on the hard side slope with barren soil; on one hand, in the degradation process of the spiral root-expanding soil-fixing basket in the soil, the spiral root-expanding soil-fixing basket can be used as a nutrient for the seeds to make the root systems of plants grow faster andmore stable, and the current situation of the relatively barren soil is improved; and on the other hand, the seeds can be effectively assisted to be planted at the deeper position of the side slope, water resources can be obtained more conveniently in the growth process of the seeds, the survival rate is increased, meanwhile, under the action and guidance of a root-expanding spiral guiding structure, the root systems of the plants grow faster and go deeper into the soil more stably, the growth range and depth of the root systems of the plant seeds are effectively enlarged, the range of a soilfixing barrier formed in the soil is wider and deeper, the slope soil is firmer and not prone to loss under firm grabbing of the plants with the developed root systems, and the slope water and soil loss prevention and treatment effect can be more ideal.
Owner:铁汉山艺环境建设有限公司

Preparation method and purification method of azacyclo-sulfide

The invention relates to the technical field of organic synthesis, in particular to a preparation method of azacyclo-sulfide and a purification method of same. The preparation method comprises the steps of raw material extraction, substrate expansion, nucleophilic preparation, oxidation modification, vibration, standing and purification. A reaction tank comprises a tank body, a reaction vessel anda burette; a plurality of layers of reaction vessels are arranged in the tank body; the burette pipeline comprises a titration disc and a shunt pipe; because the dispersion degrees of the substratesin the mixed solution are different and the speed of adding the substrates into the reaction tank is changed, the purity effect of the required azacyclo-sulfide extraction can be influenced; therefore, according to the invention, the reaction vessel and the titration disc are correspondingly arranged in the reaction tank; the reaction vessel is provided with the inclined reaction tank, the speed of a substrate solution entering the titration disc is balanced by matching with the shunt pipe inclined to the titration disc, and the servo motor drives the inclined reaction tank to rotate, so thatthe substrate added into the reaction vessel uniformly covers the surface of the reaction vessel, and the preparation purity of the azacyclo-sulfide is improved.
Owner:蒋欣雨

An electrical cabinet capable of conveniently adjusting the size of the internal space

ActiveCN111315168BEasy to adjust the size of the internal spaceAvoid offsetCasings/cabinets/drawers detailsSupport structure mountingInterior spaceGear wheel
The invention relates to the field of electrical cabinets with adjustable space, and discloses an electrical cabinet capable of conveniently adjusting the size of the internal space. The top of the inner box is provided with a moving slot, and the top of the inner box is located below the moving slot. There is a blocking device, the front of the inner box is connected with a mounting shaft, and the outside of the mounting shaft is respectively equipped with an adjusting ring, a rod sleeve, a gear seat and a retaining ring, the inside of the adjusting ring is connected with a rotating ring, and the front of the rotating ring is fixedly connected with a Back-moving spring, the back-moving spring is fixedly connected with connecting plate by pressing bar, the outside of rod cover is fixedly connected with connecting rod, and the outside of gear seat is fixedly connected with incomplete gear. The electrical cabinet that can easily adjust the size of the internal space, through the cooperation of the inner box and the installation port, has the ability to connect the inner box and the components in the expanded space through the installation port after the device is expanded, avoiding the disconnection of the space The problem of inconvenience caused by the installation improves the convenience of installation.
Owner:湖南融盛龙源电气科技有限公司

A titanium alloy drug-releasing vascular stent

The invention discloses a titanium alloy drug release vascular stent, and relates to the field of vascular stents. The titanium alloy drug release vascular stent comprises a stent body, wherein the stent body is composed of a stent outer membrane and a stent inner membrane, the stent outer membrane and the stent inner membrane are made of a titanium alloy material and are of hollowed-out structures, the portion between the stent outer membrane and the stent inner membrane is filled with a soft body, and the outer surfaces of the left and right sides of the stent outer membrane are fixedly connected with outer protrusions. The titanium alloy drug release vascular stent has the advantages that an inner container is inflated to achieve the flexible expansion of the outer protrusions to bloodvessels, the expansion range is very wide, the adjustment is very convenient, the adjustment can be carried out according to the own situation of a patient, after the expansion is completed, inner protrusions are squeezed through the inner container, thereby squeezing medicine balls, so that drugs in the medicine balls are squeezed into the blood vessels, thereby achieving the drug therapy of theblood vessels, and the vascular stent not only can keep the blood flow of the lumens of the blood vessels smooth, but also can prevent restenosis of the blood vessels, and the practicability is high.
Owner:吉林大学中日联谊医院

Titanium alloy drug release vascular stent

The invention discloses a titanium alloy drug release vascular stent, and relates to the field of vascular stents. The titanium alloy drug release vascular stent comprises a stent body, wherein the stent body is composed of a stent outer membrane and a stent inner membrane, the stent outer membrane and the stent inner membrane are made of a titanium alloy material and are of hollowed-out structures, the portion between the stent outer membrane and the stent inner membrane is filled with a soft body, and the outer surfaces of the left and right sides of the stent outer membrane are fixedly connected with outer protrusions. The titanium alloy drug release vascular stent has the advantages that an inner container is inflated to achieve the flexible expansion of the outer protrusions to bloodvessels, the expansion range is very wide, the adjustment is very convenient, the adjustment can be carried out according to the own situation of a patient, after the expansion is completed, inner protrusions are squeezed through the inner container, thereby squeezing medicine balls, so that drugs in the medicine balls are squeezed into the blood vessels, thereby achieving the drug therapy of theblood vessels, and the vascular stent not only can keep the blood flow of the lumens of the blood vessels smooth, but also can prevent restenosis of the blood vessels, and the practicability is high.
Owner:吉林大学中日联谊医院
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