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

The invention relates to a spray dispenser having an elastic filling substance reservoir serving as energy storage chamber; an expansion body that is enclosed tightly by the filling substance reservoir in the unfilled condition and at the same time expands the filling substance reservoir against the elastic force thereof; an inlet for the introduction of filling substance during further expansion of the filling substance reservoir into the interstitial area resulting thereby; and an outlet for delivering the filling substance when spraying.

The breaker comprises the insulation part, the vacuum arc extinguish chamber, external insulation, internal insulation, the support part, the insulation pull rod, the spring device and the driving system. The upside external insulation is silicone rubber solid insulation. The upside internal insulation is the insulation with fluid silicone rubber being filled between the extinguish chamber and the glass fiber winding barrel. The underpart is air insulated. There are multiple sulfurated inner umbrella skirts and outer umbrella skirts inside and outside glass fiber winding barrel. The insulation pull rod with the lead and lift bar of the glass fiber being as framework is installed inside glass fiber winding barrel. There are sulfurated silicone rubber and umbrella skirts in outside also. The lower part of the pull rod is connected to the driving system. Without using sulfur hexafluoride, the invention has no pollution, suitable for use outdoor as high voltage vacuum breaker.

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.

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.

The invention relates to an X-ray grating imaging system and an imaging method. The system comprises a distributed X-ray source, a fixed grating module, and an X-ray detector; the distributed X-ray source is perpendicular to the propagation direction of X-rays and is distributed along a direction parallel to grating stripes; the fixed grating module is arranged along the propagation direction of the X-rays and comprises a first grating and a second grating; the first grating and the second grating are parallel to each other; and the positions of the first grating and the second grating are fixed relative to each other. Light intensity at each pixel point at the presence or absence of a scanned object can be obtained on the basis of a set of stepping exposure process of the distributed X-ray source, so that one or more kinds of information selected from the attenuation, phase contrast and dark field information of each pixel point can be obtained on the basis of light intensity change,so that an image can be reconstructed. The X-ray grating imaging system and the imaging method have the advantages of high system stability, short scanning time, low ray dose and clear imaging.

The invention provides a method for preparing a ceramic material with high strength and toughness by thermal cracking of a silica gel and inorganic filling material compound, and belongs to the fieldof inorganic composite materials. The method comprises the following steps: (1) blending and surface treatment of an inorganic filling material; (2) uniform dispersion and mixing of liquid silicone rubber and a surface-treated inorganic filling material; (3) low-temperature hot-pressing vulcanization of a mixed silicone rubber / inorganic filling material compound; (4) preliminary hot-pressing cracking of a vulcanized silicone rubber / inorganic filling material compound; and (5) further ceramic sintering of a silicone rubber / inorganic filling material compound having undergone hot-pressing cracking under a condition of a high temperature to finally obtain a ceramic material product with high strength and toughness.

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.

The invention discloses a hydroboration reaction method for an aldehyde ketone catalyzed by a Grignard reagent and belongs to the technical field of hydroboration reactions. According to the method, the Grignard reagent is added into a mixture of an aldehyde or a ketone and pinacolborane under anhydrous anaerobic conditions, and the mixture above is stirred for a reaction at the room temperature.According to the hydroboration reaction method for the aldehyde ketone catalyzed by the Grignard reagent, the operation is simple, the use amount of the catalyst is low, the reaction activity is high,the expansion range of reactants is wide, and the yield is high.

The invention discloses indolo-pyrroloquinoline compounds and a synthesis method thereof and belongs to the technical field of organic synthesis. Quinoline quaternary ammonium salt and 2-(2-oxoindol-3-ylidene)malononitrile compounds are mixed and stirred at the normal temperature to react, column chromatography on silica gel is performed with a mixed solvent of ethyl acetate and petroleum ether after the reaction, spiro[dihydroindole-3,2'-pyrrolo[1,2-a]quinoline] compounds are obtained. The method for synthesizing spiro[dihydroindole-3,2'-pyrrolo[1,2-a]quinoline] compounds has the characteristics that the reaction condition is mild, raw materials are easy to use, the substrate expansion range is wide, the operation is simple, the yield is high and the diastereoselectivity is high. The target molecular structure has not been reported in literature yet at present and has important application value in various fields such as medicine, pesticide, bioscience and the like.

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.

Belonging to the technical field of organic synthesis, the invention relates to a synthesis method for a tetrahydrospiro compound. The method includes: under the protection of nitrogen, in the presence of a solvent and an acidic catalyst, carrying out condensation reaction on indole and ketone, then adding 3-alkylene indole-2-one for cyclization reaction, thus obtaining a tetrahydrospiro[carbazole-1, 3'-indoline] compound. The method provided by the invention has the advantages of simple and easily available raw materials, no need for preparation of a substrate in advance, large substrate expansion scope and high yield.

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.

The invention relates to a synthesis method of benzo[d]pyrrolo[2,1-b]thiazole and belongs to the technical field of organic synthesis. The synthesis method comprises the following step: in acetonitrile, mixing benzothiazole and bromide and performing reaction to obtain N-benzoyl methylbenzothiazole bromide; under the existence of ethanol and an alkaline catalyst, mixing the N-benzoyl methylbenzothiazole bromide and nitroolefin and performing addition reaction to obtain a tetrahydro-benzo[d]pyrrolo[2,1-b]thiazole compound; and mixing the tetrahydro-benzo[d]pyrrolo[2,1-b]thiazole compound and excessive antioxidants, heating, performing refluxing reaction, and performing silica-gel column chromatography to obtain the benzo[d]pyrrolo[2,1-b]thiazole. The synthesis method of the benzo[d]pyrrolo[2,1-b]thiazole is easily available in raw material, green in reaction condition, rapid in reaction and large in substrate expanding range, and does not need metal catalysts to participate.

The invention relates to a method for expanding the constant-torque variable-frequency speed control range of an AC motor by Y / YY conversion. The method is characterized by when the motor voltage rises to a rated value with the frequency, performing Y / YY conversion on the stator winding of the AC motor to reduce the number of series turns of each phase winding to a half, and reducing the supply voltage of winding to a half so that the winding obtains a lifting space equivalent to a doubled voltage, and the system constant-torque speed control range is doubled in the new winding connection mode. The method realizes a purpose of expanding the constant-torque speed control range of the motor without increasing the power supply voltage or increasing the number of semiconductor switching devices of an inverter circuit, and makes the winding voltage phase unchanged before and after the Y / YY conversion, and provides convenience for control.

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.

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.

The invention relates to the technical field of gas phase detection, in particular to a gas phase chromatography carrier gas switching use method. An air path transformation is performed; a carrier gas switching technology is used for realizing single-gas-path analysis of different gas; through the switching on a valve, the switching on the carrier gas can be realized; when the N2 gas is used as the carrier gas, the H2 detection can be realized; when the H2 gas is used as the carrier gas, the detection on O2(AR), N2, CH4 and CO can be realized. Compared with gas source switching, the switchingefficiency on a chromatography gas inlet is high; the transformation is easy; the flexibility is high; the TCD detector is a detector with the widest use; the switching technology has the wider expansion range; the carrier gas is switched into N2 and H2 switching; no damage is caused on heat wires, so that an analysis method of directly using a valve 1 and a valve 2 for switching without switching off current of the detector and calling out different carrier gas setting parameters after the switching is used. The method has the advantages that simplicity and high speed are realized; the use is convenient; the cost is reduced.

The invention discloses a wireless channel model matching and correction method based on map information, comprising the following steps: carrying out drive test sampling on typical points within a planned area to obtain sampling data; acquiring map information within the planned area to obtain map data; Collect the working parameters of all base stations that can cover the planned area to obtain the collected data; collect the sampling data, map data and collected data to obtain the first data set; preprocess the first data set to obtain the second data set; The parameters of the regression matching model and the parameters of the classification matching model are determined according to the second data set; the final prediction values ​​corresponding to the wireless channel models of the non-sampling points within the planning area are obtained through the regression matching model and the classification matching model. The invention has the advantages of simple operation, full use of a typical statistical channel model, low computational complexity, wide application range, improved accuracy of the wireless propagation channel model, and the like.

The invention discloses a method for synthesizing a (E)-benzylidene spiropyrazole pyrrolizinone compound. The method comprises the following step of: carrying out one-step reaction on tetrahydropyrrole, various substituted aromatic aldehydes and pyrazolone acetal in the presence of an organic solvent and a catalyst to obtain the (E)-benzylidene spiropyrazole pyrrolizinone compound. According to the method, an effective strategy of subjecting azomethine ylide which is generated by tetrahydropyrrole and benzaldehyde in situ and 4-benzal-5-methyl-2-phenyl-2, 4-dihydro-3H-pyrazole-3-one to 1, 3-dipolar cycloaddition to synthesize a complex spiro compound is adopted. Specifically, the azomethine ylide has a special [1, 3]hydrogen migration phenomenon, and can form the azomethine ylide with benzylidene substitution with excessive benzaldehyde. The raw materials used in the method are easy to obtain, anaerobic reaction conditions are not needed, a transition metal catalyst is not needed either, operation is easy and convenient, and an efficient, economical and applicable method is provided for synthesizing the (E)-benzylidene spiropyrazole pyrrolizinone compound.

The invention relates to a storing, taking and transferring device and method for an automobile sliding column brake assembly, and is characterized in that the storing, taking and transferring devicecomprises a transferring trolley and a rotating platform, the rotating platform is rotatably arranged on the transferring trolley through a rotating shaft, and the rotating platform is fixedly connected with the rotating shaft; a plurality of brake disc fixing bases are evenly distributed on the rotating platform in the circumferential direction, a plurality of sliding column fixing frames are evenly distributed on the rotating shaft in the circumferential direction, and the brake disc fixing bases and the sliding column fixing frames are matched to work in a one-to-one correspondence mode. According to the device, the function of transferring the sliding column brake assembly is achieved, meanwhile, the problems that parts are inconvenient to store and take by operators and the efficiencyis low are solved, and the high efficiency of assembly is effectively guaranteed.

The invention discloses a Micro-LED array device based on group III nitride semiconductors, which is etched to form an array fan-shaped mesa structure that penetrates the p-type GaN layer, the quantum well active layer, and reaches the n-type GaN layer, and the p-type array The electrodes are vapor-deposited on the p-type GaN layer of the fan-shaped array, and the n-type array electrodes are vapor-deposited on the n-type GaN layer, and the n-type array electrodes form barriers to isolate the fan-shaped mesas from each other. And discloses its preparation method. In the present invention, a retaining wall made of n-type electrodes is added between the light-emitting units of the Micro-LED fan-shaped table array. The problem of crosstalk between units is beneficial to realize individual control; the use of n-type electrode metal as a retaining wall and the use of p-type electrodes with a mesh structure increases the current expansion range and effectively improves luminous efficiency.

The invention discloses a hydroboration reaction method of aldehydes and ketones catalyzed by Grignard reagents, and belongs to the technical field of hydroboration reactions. The method is that the Grignard reagent is added to the mixture of aldehyde or ketone and pinacol borane under anhydrous and oxygen-free conditions, and the reaction is stirred at room temperature. The hydroboration reaction method of aldehydes and ketones catalyzed by the Grignard reagent of the present invention has the advantages of simple operation, small amount of catalyst, high reaction activity, wide expansion range of substrates and high yield.

The invention relates to a multi-stage transmission provided with an input shaft (3), which is connected to a shiftable front-mounted planet gear set (10), with an output shaft (4), which is connected to a shiftable main planet gear set (20), and with a number of shifting elements (A to F) whose selective closing enables the shifting of at least six forward speeds without range shift. An output element of the front-mounted planet gear set (10) can be connected to a first input element of the main planet gear set (20) via a first shifting element (A) and can be connected to a second input element of the main planet gear set (20) via a second shifting element (B). The input shaft (3) can be connected to a third input element of the main planet gear set (20) via a fifth shifting element (E). Preferably, a sun gear (11) of the front-mounted planet gear set (10) can be fixed via a sixth shifting element (F) mounted on the side of the front-mounted planet gear set (10) facing away from the main planet gear set (20). The front-mounted planet gear set (10) is provided in the form of a Plus gearing having inner and outer planet gears (12, 13) whose webs (15, 16) are interconnected.

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.

The present invention is applicable to the technical field of wireless communication, and provides a quality measurement method, user equipment and quality measurement system. The method includes: the user equipment UE receives the resource-restricted subframe RRS information sent by the network side equipment; the UE according to The RRS information performs downlink channel quality measurement and / or downlink physical layer channel quality measurement. In the present invention, the UE performs downlink channel quality measurement or downlink physical layer channel quality measurement according to the RRS information sent by the network side equipment. This measurement method is different from the existing measurement method, and is a channel measurement method limited to RRS subframes. This measurement method can enable the second cell to enjoy a larger extension range, and enable the UE in the second cell in the RE area to enjoy more accurate downlink channel quality measurement results or downlink physical layer channel quality measurement results.

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.

The invention discloses a granulator for rubber master batches. The granulator comprises a rubber storage base, a granulation work box and a mixing treatment tank, wherein the granulation work box is arranged at the top of the rubber storage base, the mixing treatment tank is located above the granulation work box, a hot melting adding work box is arranged at the top of the mixing treatment tank, a guide pipe is arranged between the granulation work box and the mixing treatment tank, a side connecting pipe is arranged between the side of the rubber storage base and the mixing treatment tank, and inner mixing devices are arranged in the mixing treatment tank. The granulator relates to the technical field of rubber processing. According to the granulator for the rubber master batches, the problems that the working efficiency of internal mixing is low during working and internal mixing is not uniform enough when a single mixing mechanism is adopted are solved; mixing rings in the inner mixing devices in the mixing treatment tank are driven to rotate by inner rollers; and since the plurality of mixing rings are adopted in the device, the device can quickly perform mixing, a mixing speed is high, and mixing is uniform.

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.