103results about How to "Good decompression effect" patented technology

When compressing an arrangement of fixed-length records in a columnar direction, a data compression device carries out data compression aligned with the performance of a data decompression device by computing a number of rows processed with one columnar compression from the performance on the decompression device side, such as the memory cache capacity of the decompression device or the capacity of a primary storage device which may be used by an application, and the size of one record. Thus, while improving compression ratios of large volumes of data, including an alignment of a plurality of fixed-length records, decompression performance is improved.

The invention is suitable for the technical field of the FPGA(Field Programmable Gate Array), and provides a FPGA binary file compression and decompression method, and a FPGA binary file compression and decompression device. The compression method comprises the following steps: obtaining a FPGA binary file; traversing the contents of the FPGA binary file, classifying the contents, and judging classification data and a data area where the classification data is positioned; adopting a coding storage way corresponding to the data area to code and store the classification data; and according to a general compression algorithm, carrying out integral compression on the classification data of which the information entropy is smaller than a set value. The compression method has the following beneficial effects: 1) the structural characteristics of the FPGA binary file are analyzed, the FPGA binary file is divided into multiple data areas of specific types, and different coding ways are adopted for different data areas to carry out compression storage so as to greatly reduce a file storage space; and 2) the ways of length, type and data value are adopted for storing files, and are especially effective for an application scene of multi-time decompression and one-time compression. Decompression speed is far higher than compression speed, and a decompression effect is improved.

The invention discloses a piece of combined type prosthesis for breastbone reconstruction and relates to the technical field of artificial prosthesis. The combined type prosthesis comprises at least two breastbone pieces, the breastbone piece is provided with a left rib clip and a right rib clip, an insert slot is formed in the middle of the lower side of the breastbone piece, a connecting lug capable of being embedded into the insertion slot and matched with the insertion slot is arranged in the middle of the upper side of the breastbone piece, the connecting lug of the lower-side breastbone of the two adjacent breastbone pieces is embedded into the insert slot of the upper-side breastbone, connecting and fixing devices mutually matched are respectively arranged on the connecting lugs and the insert slots of the adjacent two breastbone pieces, a sternoclavicular joint or a breastbone upper fixing block is arranged on the uppermost-side breastbone piece, and a breastbone lower end block or a breast lower fixing block is arranged on the lowermost-side breastbone piece. The combined type prosthesis provides a horizontal support force and a vertical support and limit function and has a good effect of protecting thoracic cavity organs like thoracic cavity, heart and lung; the sizes, the shapes and the installation positions of the component units are adjusted at any time according to the individual differences and operation conditions of patients, the surgical operation saves time and labor, and the operation effect is good.

The invention relates to a construction method of a cross section-expanded loop type depressurizing portal for a high-speed railway tunnel, which comprises the following steps of: A, constructing an expanding section at the portal of a tunnel, wherein the cross-sectional area of the expanding section is 1.3-1.6 times larger than that of the tunnel; B, constructing lateral pilot tunnels at both sides of the portal of the tunnel, wherein the lateral pilot tunnels are parallel to the tunnel and are communicated with the outside, the lateral distance between each lateral pilot tunnel and the tunnel is 20-30m, and the cross-sectional area of each lateral pilot tunnel is 25-35% of the cross-sectional area of the tunnel; and C, constructing first, second and third transverse channels which transversely penetrate through the lateral pilot tunnels and the tunnel between the two lateral pilot tunnels. The portal of the railway tunnel constructed by using the method can effectively reduce micro pressure waves produced by a high-speed train moving into the tunnel, is easy to construct, is not influenced by the surrounding topography of the tunnel and has low construction cost.

The invention discloses a micro electricity generating device capable of generating electricity by utilizing industrial wastewater. The micro electricity generating device capable of generating the electricity by utilizing the industrial wastewater comprises a water inlet device (1), a pressure reducing device (2), a filtering device (3), a first electricity generating device (4), a settling device (5), a bracket device (6), a second electricity generating device (8) and a recycling device (7); the water inlet device (1) comprises a water inlet hopper (11), a water inlet pipe (12), a first bent rod (13) and a second bent rod (14); the pressure reducing device (2) comprises a pressure reducing frame (21), a first filtering net (23), a plugging block (24) and a first spring (25); the filtering device (3) comprises a first frame body (31), a first bracket (32) and a second filtering net (33); the first electricity generating device comprises a first connecting rod, a first bent plate, a roller, a bump, a second bent plate, a second connecting rod and a first supporting rod. According to the micro electricity generating device capable of generating the electricity by utilizing the industrial wastewater, and sewage can be fully utilized, and the utilization efficiency of water resources is improved.

The invention provides an LED (light-emitting diode) organosilicon pouring sealant. The LED organosilicon pouring sealant is composed of a component A and a component B, wherein the component A and the component B respectively comprise the following components that the component A is organopolysiloxane with a structural unit containing a -SiCH=CH2 group and a hydrogen silicide platinum family polysiloxane catalyst; the component B is organopolysiloxane with a structural unit containing a -SiCH=CH2 group, organopolysiloxane with a structural unit containing -SiH and at least one alkoxy, and alkynol or polyvinyl siloxane. When the pouring sealant provided by the invention is used for LED elements, the mixture is clear and transparent, and the compatibility is good; the pouring sealant has a good adhesive force on materials such as PPA (phenyl-propanolamine), PC (polycarbonate), zinc-plated aluminum and fluorescent powder in the LED elements after being cured at 50-60 DEG.C or room temperature, and the interlayer phenomenon is avoided; the organosilicon pouring sealant is high in transparency, cold and hot impact resistant, high temperature aging resistant and light aging resistant and has an excellent dielectric property.

An indoor air filtration and sterilization device comprises a first filter (1), a first air extractor (2), a first sterilization device (3), a second filter (4), a second air extractor (5), a second sterilization device (6) and a cooling device (7), wherein the first filter (1) comprises a first frame body (11), a first sponge block (12), a rolling ball (13), first bristles (14) and a first filter screen (15); the first air extractor (2) comprises a first pipeline (22), a first fan (23), a first bracket (24) and first support rods (21); the first sterilization device (3) comprises a second frame body (31), a second sponge block (32), a first bent plate (33), glass shades (34), ultraviolet lamps (35), a third sponge block (36), first springs (37) and a fourth sponge block (38). The indoor air filtration and sterilization device can filter air multiple times and has a remarkable filtering effect.

A two-stage gas pressure reducing valve is composed of two pressure reducing valves. A primary pressure reducing valve on the left side is positively installed, a secondary pressure reducing valve on the right side is inversely installed, an inlet of the secondary pressure reducing valve is connected with an outlet of the primary pressure reducing valve, and a throttle orifice is arranged between the secondary pressure reducing valve and the primary pressure reducing valve. After high-pressure gas undergoes pressure reduction and pressure stabilization through the primary pressure reducing valve, medium-pressure gas having a certain value is obtained; the medium-pressure gas enters the secondary pressure reducing valve through the throttle orifice, and the secondary pressure reducing valve continues to perform pressure reduction and pressure stabilization on the medium-pressure gas, so that the medium-pressure gas enters the secondary pressure reducing valve through the throttle orifice, so as to meet the requirements of a gas pipe system. Compared with the prior art, the two-stage gas pressure reducing valve has the remarkably advantages that 1) outlet pressure control accuracy is high, the pressure is stable, dynamic characteristics are good, pressure regulating amplitude is high, and the pressure reduction effect is obvious; 2) during the pressure regulation, a sensitive element and a throttle valve core react simultaneously, and the reaction aftereffect is reduced, so that the pressure regulating response is quicker and more accurate.

The invention provides an external vascular stent capable of achieving 3D printing and used for nutcracker syndromes. The external vascular stent is provided with a tubular external vascular stent body. The external vascular stent body is at least oppositely encircled by a first stent part and a second stent part to form a tube shape. A first clamping piece and a second clamping piece are fixedly arranged at the two ends of the first stent part respectively. A third clamping piece and a fourth clamping piece are fixedly arranged at the two ends of the second stent part respectively. The first clamping piece and the third clamping piece can be connected to form a ring shape, and the second clamping piece and the fourth clamping piece can be connected to form a ring shape. The external vascular stent has the advantages of being simple in structure, convenient to use, obvious in effect and wide in patient application range. When the external vascular stent is applied to an operation, wounds are small and the postoperation decompression effect is good. The invention further provides a manufacturing method of the nutcracker syndrome external vascular stent based on 3D printing.

The invention provides a COT thermocouple anti-scour and anti-coking sleeve used in a cracking furnace. The sleeve comprises a thermocouple, a terminal block, a lower protecting tube, a process connecting flange, an upper protecting tube and a measuring terminal, an internal leakage resistant device is arranged between the upper protecting tube and the process connecting flange, the measuring terminal is provided with a temperature measuring head and an anti-scour body having a prismatic inclined scour plane, the anti-scour body is arranged into a whole part with the temperature measuring head through connection, the temperature measuring head is connected with the back of the anti-scour body, a projection plane of the temperature measuring head which is perpendicular to the back of the anti-scour body is smaller than the back of the anti-scour body, the prismatic inclined scour plan of the anti-scour body is coated with multi-layer composite materials, a temperature measuring terminal is in seal welding with the lower protecting tube, and a protective layer is arranged at the welding position. The provided technical proposal has good temperature measurement sensitivity, and can achieve good effects of high temperature resistance, scour resistance, coking resistance, seismic resistance, internal leakage resistance and the like.

The present invention provides a pressure reducing apparatus for preparing polyamide.The pressure reducing apparatus comprises a sealed kettle body. The kettle body is provided with a material inlet and a material outlet, wherein the material inlet is formed above the material outlet; inside the reactor body is provided with a material coil connected with the material inlet and the material outlet; the material coil is divided into a plurality of sections; the diameters of the same sections of the material coil are the same; the diameters of different sections of the material coil are gradually increased from the material inlet to the material outlet. The present invention further provides a pressure reducing method as well as production equipment and a production method for polyamide 5X. The pressure reducing apparatus provided by the present invention is capable of effectively separating water from a material, and is good in separation effect. The production equipment and the production method for polyamide 5X provided by the present invention are specific to polyamide 5X, are capable of producing many types of polyamide 5X products, and can broaden the production and application ranges of the polyamide 5X products.

The invention provides a method for treating defects in the cleaning section in the pickling process of stainless steel cold rolling. The method for treating defects in the cleaning section in the pickling process of stainless steel cold rolling includes: in the final cleaning process, using at least three The rollers clean the steel strip, and the three groups of rollers are respectively an entrance-side squeezing roller, a middle-side squeezing roller and an exit-side squeezing roller, wherein the material of the exit-side squeezing roller is polyurethane rubber. The invention eliminates the defect that the rubber is pressed into the binary ethylene-propylene rubber roller during use, which leads to a decrease in product quality and a short service life of the roller.

The invention discloses a construction method for loop type hypobaric holes of a railway tunnel. The method comprises the steps of A. constructing side leading holes (11) which are parallel to the tunnel and have lengths 3.5-4.5 times of the hydraulic diameter of the tunnel at the two sides of the hole of the tunnel (10), wherein the transverse distance of the side leading holes and the tunnel is 0.8-1.3 times of the hydraulic diameter of the tunnel, and the basal area of the side leading hole is 20 percent-30 percent of the basal area of the tunnel; B. constructing a first and a second cross passages (20, 21) transversely perforating the side leading holes and the tunnel between the two side leading holes, wherein the first cross passage (20) is constructed at the distance 1.5-2 times of the hydraulic diameter of the tunnel from the tunnel, and the basal area of the first cross passage is 10 percent-15 percent the basal area of the tunnel; and the second cross passage (21) is perforated with the inner ends of the side leading holes, and the basal area of the second cross passage is 5 percent-10 percent of the basal area of the tunnel. The micro-pressure wave phenomenon of the railway tunnel holes constructed by using the method is greatly reduced, the construction is easy and the construction cost is low.

The invention relates to a buffer and decompression device for a water tower, comprising a water tower, the bottom of the water tower is connected with an outlet pipe, and the outlet pipe is provided with a primary buffer device and a secondary buffer device in sequence, wherein the primary buffer device is provided with a first Buffer board group, the second buffer board group is provided in the secondary buffer device; the first buffer board group includes a plurality of buffer boards arranged in a staggered manner, the buffer boards are arranged obliquely, and the setting direction is adapted to the direction of water flow; the second buffer board group includes A plurality of buffer plates arranged on the top of the secondary buffer device, the buffer plates are arranged obliquely, and the setting direction is adapted to the direction of water flow. The buffer and decompression device used in the water tower can play a good buffer and decompression effect on the impacting water flow by setting the first-level buffer device and the inclined buffer plate in the second-level buffer device. After the second-level buffer, The water flow tends to be stable and can be used directly, the structure is simple, and the manufacturing cost is low.

The invention discloses a control valve. The control valve comprises a valve seat, wherein a channel allowing a medium to flow is arranged in the valve seat, a main valve body and an auxiliary valve body are sequentially arranged in the valve seat in the medium flow direction, the main valve body is used for completely opening or completely closing the channel, the auxiliary valve body is used foradjusting the opening degree of the channel, the auxiliary valve body is a sliding plate capable of reciprocating in the radial direction of the channel, the surface of the sliding plate is divided into an open hole region and a non-open hole region, and the reciprocating sliding plate can adjust the opening degree of the channel through the change of the position relationship between the open hole region and the non-open hole region and the channel. The control valve can ensure stable pipeline pressure to a great extent to achieve normal production.

The invention discloses a splitter plate of a rubber extruding filter. The splitter plate comprises a head, a splitter plate, a filter screen, a screw, a cylinder and splitter plate holes, wherein the head is connected with the cylinder; the screw is arranged in the cylinder and a gap is formed between the screw and the cylinder; the splitter plate is embedded in the head; the filter screen is fixedly supported by and fixed by the splitter plate; the splitter plate holes are formed in the splitter plate; and the splitter plate is characterized in that more than two splitter plate holes are combined into a rubber discharge hole at the tail end of the length. The splitter plate holes are conical through holes with increasing apertures along discharge direction. The splitter plate has the advantages of simple structures of the splitter plate holes, low manufacturing cost, obvious decompression effect and capabilities of preventing the splitter plate from being crushed and making the research and development of a large-specification rubber extruding filter possible.

A fuel injector includes a nozzle body having a spray tip with at least one spray orifice and a needle slideably arranged in the nozzle body in order to control the spray orifice. A control chamber is associated with the needle, which is filled with high-pressure fuel in order to exert a pressure force on the needle in its closing direction; the control chamber being in communication with a high pressure fuel channel through an inlet restrictor and with a low pressure drain through an outlet restrictor via a control valve to selectively allow or hinder the flow of fuel out of the control chamber through the outlet restrictor. The inlet restrictor and outlet restrictor are designed so that the ratio of outlet fuel flow rate over inlet fuel flow rate increases at low fuel temperatures, in order to cause a greater pressure reduction in the control chamber.

The invention discloses an optical device for virtual reality, which comprises a glass shell, a support plate, a face support frame and a head hoop, wherein the shell is provided with a lifting forcesupply device. Thus, the pressure on the head of a user by the weight of the device can be greatly reduced, possible damages to body parts such as the head and the neck after long time wearing can beavoided, and the comfort of the device wearing by the user is improved. Besides, as a head band is fixedly connected between the glass shell and the head hoop, the face pressure of the user can be shouldered in the case of use, and in match with a flexible foam pad arranged at the edge of the inner side of the face support frame and a buffer pad arranged at the inner side of the head hoop, the usecomfort is effectively enhanced.

The invention discloses a novel mattress support layer and belongs to the field of furniture production. The novel mattress support layer comprises a bearing frame, a support frame and a bed surface weaved from synthetic fiber yarns, wherein the bearing frame has an upper-and-down two-layer structure and is of a rectangular shape; semicircular columns are arranged at four corners, and the bearing frame is formed by connecting the semicircular columns; the long edge of the bearing frame is 1-2.2 meters, and the short edge is 0.5-1.8 meters; the height of the semicircular columns is 0.1-0.3 meter; the support frame is arranged in the bearing frame; the support frame has upper and lower two layers; circular columns are arranged at the crossing points formed by the support frame and are welded with the upper and lower two layers of the support frame; each end part on the support frame is connected with the bearing frame; vertical columns identical to the semicircular columns at four corners of the bearing frame are arranged on all the end parts and are integrally connected with the bearing frame; and the bed surface weaved from synthetic fiber yarns is formed in the manner of stranding single synthetic fiber yarns, weaving according to a warp weft weaving method and then moveably connecting with the bearing frame.