537results about How to "Expand the adjustment range" patented technology

An aiming sight includes a controller, a power supply, an LED array, and a collimator. The power supply powers the LEDs to turn-on and turn-off, and powers the collimator to rotate. The collimator rotates to different rotational positions while the controller, the power supply, and the LED array remain fixed in place. The LEDs are positioned such that one LED and the collimator are at a constant angle and separated by a constant focal distance for each collimator position. The controller controls the collimator to rotate to a collimator position to generate an aiming dot at an angular position corresponding to the collimator position. The controller turns-on the LED which is at the constant angle and separated from the collimator by the constant focal distance and turns-off the remaining LEDs such that the collimator collimates light from the turned-on LED into the aiming dot at the angular position corresponding to the collimator position.

A gas turbine system includes a compressor protection subsystem; a hibernation mode subsystem; and a control subsystem that controls the compressor subsystem and the hibernation subsystem. At partial loads on the turbine system, the compressor protection subsystem maintains an air flow through a compressor at an airflow coefficient for the partial load above a minimum flow rate coefficient where aeromechanical stresses occur in the compressor. The air fuel ratio in a combustor is maintained where exhaust gas emission components from the turbine are maintained below a predetermined component emission level while operating at partial loads.

A twin vane-type phaser is described which is provided with a locking mechanism for locking the drive member to the driven members when the pressure in the working chambers is a below is predetermined value. The locking mechanism comprises two coaxial locking pins 114, 118 mounted in a common bore 110 in the centrally located member 32. The locking pins are resiliently urged apart by a spring 120 into bores in the two outer members 38, 40 and are retracted by pistons 112, 116 when the hydraulic pressure in the working chambers attains the predetermined value.

To provide a high-performance, inexpensive low C-high Si-high Cr—B—Nb type iron-based corrosion-resistant and wear-resistant alloy that is extremely superior in corrosion resistance and wear resistance to 304 stainless steel, high-chromium cast iron and high carbon-high chromium cast-iron-type materials, has a high corrosion-resistant property that would never be obtained from a high carbon-high chromium carbide precipitation-type iron-based wear-resistant alloy and at the same time, a wear-resistant property that is superior to these metals, and further hardly causes brittle peeling that is inherent to high Si—containing steel. This alloy contains, all percentages by weight, C: 0.5 to 2.5% by weight, Si: 2.5 to 4.5%, Mn: 0 to 10% or less, Cr: 15% to 31%, Ni: 0 to 16%, Cu: 7% or less, Mo: 10% or less, B: 0.5% to 3.5%, and 0≦Nb+V≦8%, and in this structure, within a range of 15% Cr≦Cr<27%, (Si×B)≦2014 / Cr2+0.083Cr+1.05 is satisfied, within a range of 27%≦Cr≦31%, 1.25%≦(Si×B) 6.0% is satisfied, within a range of 15%≦Cr<20%, (Si×B) 570 / Cr2−0.066Cr+1.145 is satisfied, and within a range of 20%≦Cr≦31%, (Si×B)≧1.25 is satisfied.

The invention belongs to the technical field of light source illuminating and electronics, in particular relates to an intelligent general light-emitting diode (LED) street lamp illuminating power supply system. The system comprises an input surge protection and electromagnetic interference suppressing circuit, a BOOST-BUCK isolation backlash power factor correction switch power circuit, an LED chip temperature detection circuit, an ambient brightness detection circuit, a permanent calendar chip, a peripheral circuit, an LED failure detection circuit, a singlechip circuit and a constant-current output control circuit. In the switch power circuit of the invention, a circuit structure is simplified and circuit efficiency is improved based on an active power factor correction (PFC) control chip L6562,; and the singlechip circuit monitors the ambient brightness, the temperature of the LED chip, time and LED fault in real time by taking a chip STC12C5606AD as a control core and intelligently adjusts the output brightness of the LED according to different situations, so that energy is saved and the service life of an LED street lamp is prolonged effectively at the same time.

An antenna apparatus is featured by that a base member 4 has an antenna unit 3 and a loop pattern 2 wound in such a manner that a magnetic field of the loop pattern 2 is generated along the same direction as that of the antenna unit 2, and the loop pattern 2 has been formed by a plurality of loops connected parallel to each other.

A system for heating the inlet-air of a gas turbine is provided. The system may incorporate an external energy source to increase the temperature of the inlet-air. The system may extend the turndown of a gas turbine operating at partload.

A guided control valve comprising a vapor recovery area that encourages collapse of vapor bubbles. In a cage-guided valve, a seal comprising inner and outer members reduces flow through a radial clearance between a plug and a cage. The vapor recovery area is positioned below the seal and above a seat interacting with the plug. The vapor recovery area encourages collapse of vapor bubbles to reduce damage to the valve trim.

A guided control valve comprising a vapor recovery area that encourages collapse of vapor bubbles. In a cage-guided valve, a seal comprising inner and outer members reduces flow through a radial clearance between a plug and a cage. The vapor recovery area is positioned below the seal and above a seat interacting with the plug. The vapor recovery area encourages collapse of vapor bubbles to reduce damage to the valve trim.

The invention relates to a method for generation by a biomass. The method utilizes the gasification technology, which converts the forestry and agricultural residues comprising wasted straws, sawdust, haulms, rice husks, bagasse, etc. into the flammable gas approaching the coal gas; after the dust and the tar of the flammable gas is removed by a purifier, the flammable gas is conveyed in a gas internal combustion engine or a gas turbine for generation. The invention has strong raw material adaptability, can dispose the biomass raw material of different types, and has the advantages of large production intensity, high gas heat value, little tar content, high gasification efficiency, strong load adaptability, easy start and stop, large adjustable range, stable operation, extremely high flexibility in scale. Furthermore, the generation scale depends on the quantity of the raw material and the requirement of the power, and can be designed and matched according to the requirement of the user.

A vehicle seat adjustment system for adjusting the position of a portion of a vehicle seat. The system comprises a hydraulic actuator, a primary activation system for operating the hydraulic actuator and adjusting the seat position, and a secondary activation system for the hydraulic actuator. The secondary activation system is arranged to be activated in the event of a detected crash, to provide for movement of the hydraulic actuator to automatically adjust the position of a portion of the seat towards a predetermined position. The secondary activation system comprises a chamber to allow fluid to be displaced from the hydraulic actuator into the chamber. The secondary activation system may additionally comprise a fluid injection unit which supplies a quantity of fluid, preferably gas, to the actuator.

The invention relates to a compound reinforcing method capable of rapidly falling-silt, promoting-seepage, prepressing, reinforcing and blow filling soft clay. The method comprises the following steps: mixing water and soil separating agent and sucking silt mud, introducing the mud mixed with the water and soil separating agent into a cofferdam for silt falling, appearing obvious and rapid solid-liquid separation of the mud in the cofferdam, and overflowing and discharging or recycling the separated tail water containing extremely few of solid matters from the far end of the cofferdam; after filling, silt falling and discharging, respectively inserting a plastic drainage plate, laying a plastic drainage pipe, geotextile and a plastic film on the surface layer of the silt, utilizing a vacuum pump to suck to form negative pressure at the lower part of the plastic film, discharging water in silt body on the surface layer by means of atmosphere pressure to lead the bearing capacity of siltbody on the surface layer to be improved rapidly, establishing an operation platform for follow-up soft base treatment, such as vacuum preloading, pile deep stirring, electroosmosis and plate body stabilizing and other technologies, thus realizing the filling-silt overall soft foundation consolidation treatment purpose in the cofferdam. The technology of the invention reduces the construction time of filling soft soil foundation to half and the cost to a half, is popularized and applied, and has extremely economic and social benefits.

Provided is a heating temperature adjustment circuit in a thermal flow meter capable of adjusting fluctuations of a heating temperature of a heat-generating resistor due to fluctuations of resistances with high accuracy and low cost. The thermal flow meter comprises: a heat-generating resistor that generates heat when a current flows therethrough; a first temperature measuring resistor, a second resistor, a third resistor, and a fourth resistor whose resistance values vary due to temperature; and a fixed resistance having a resistance temperature coefficient lower than that of the first temperature measuring resistor, and measuring a flow rate of a fluid by controlling the heating temperature of the heat-generating resistor. The thermal flow meter includes: a first series circuit in which the fixed resistance, the first temperature measuring resistor, and the second resistor are connected to one another in series; and a second series circuit in which the third resistor and the fourth resistor are connected to each other in series, and generates a voltage to be added to the second series circuit based on voltages at both ends of the fixed resistance.

A fuel injection control apparatus, for a variable-fuel engine, includes a plurality of stored maps for determining a basic fuel injection time corresponding to a state of an engine and alcohol concentration in the fuel. The apparatus includes a memory storage region which stores the fuel injection control maps. The apparatus also includes an oxygen sensor disposed in an exhaust pipe for detecting oxygen concentration in an exhaust gas; a basic fuel injection time calculator which determines the basic fuel injection time using the currently selected fuel injection control map; a correction coefficient calculator which determines an air-fuel ratio correction coefficient for correcting the basic fuel injection time; a fuel injection quantity calculator; and a map changeover part which selects the fuel injection control map of the concentration of alcohol close to the concentration of alcohol of the fuel based on the air-fuel ratio correction coefficient.

The invention discloses a center-of-mass adjusting device of a deep sea glider. The center-of-mass adjusting device of the deep sea glider comprises a pitching adjusting portion, a transversely-rolling adjusting portion, a front baffle, a rear baffle, a front baffle supporting ring and a battery pack. The pitching adjusting portion comprises a first motor, a worm wheel, a worm, a ball screw and two linear guiding rails. The transversely-rolling adjusting portion comprises a second motor, a gear set and a gear ring. The battery pack comprises a battery pack body, a battery pack body installation support and an installation board. The front baffle and the rear baffle are respectively circular and are arranged at the two ends of the center-of-mass adjusting device in a concentric mode in parallel. The worm wheel is fixedly installed on the upper portion of the front baffle. The worm is fixedly connected with an output shaft of the first motor in a concentric mode and is meshed with the worm wheel, the first motor is parallel to the front baffle in the axial direction, the first motor is fixedly installed in the middle of the front baffle and located below the worm wheel, the second motor is provided with a worm and gear reduction gearbox, and the second motor is perpendicular to the front baffle in the axial direction. The center-of-mass adjusting device of the deep sea glider can solve the technical problems that an existing center-of-mass adjusting device of the deep sea glider is complex in structure and large in occupied space and only axial adjustment or circumferential adjustment can be achieved.

The invention relates to a clamping tool for trimming a wing leading edge covering. The clamping tool comprises a base, two slide rail pairs, a plurality of U-shaped arms, a plurality of flexible clamping components and a plurality of covering locators, wherein the two slide rail pairs are parallel to each other and are arranged on the base; each U-shaped arm is provided with two arm parts and a connecting part connecting the two arm parts; the connecting parts of the U-shaped arms are mounted on the base by the slide rail pairs in a sliding manner; the flexible clamping components comprise vacuum chuck shape adjustment components and quick locators; the vacuum chuck shape adjustment components are arranged on the arm parts of the U-shaped arms and used for clamping the wing leading edge covering; the quick locators are arranged on the arm parts of the U-shaped arms and used for locating the vacuum chuck shape adjustment component; and the covering locators are arranged on the connecting parts of the U-shaped arms and used for locating the wing leading edge covering. The tool can clamp the wing leading edge covering flexibly, meet trimming requirements of different leading edge coverings, and greatly lower the manufacturing cost.

A liquid crystal display is provided with: a tap adjustment register for adjusting a gray scale level to a gray scale voltage in intermediate portions close to the end portions of the gamma characteristic; and a partial-voltage-ratio adjustment register for adjusting a ratio of a gray scale voltage among a plurality of gray scale levels in the intermediate portions close to the end portions of the gamma characteristic, in addition to an amplitude adjustment register for adjusting an amplitude of a gamma characteristic which determines a relation between gray scale levels and gray scale voltages or brightness levels on a display panel; a gradient adjustment register for adjusting a gradient of intermediate portions of the gamma characteristic while fixing end portions of the gamma characteristic; and a fine adjustment register for finely adjusting the intermediate portions of the gamma characteristic for each gray scale level.

A scroll compressor is provided, comprising: a compression mechanism comprising a non-orbiting scroll member and an orbiting scroll member, wherein the orbiting scroll member is axially displaceable between an engagement position and a disengagement position; a main bearing housing adapted to support the compression mechanism; a back pressure chamber formed between the orbiting scroll member and the main bearing housing, wherein the back pressure chamber is in communication with at least one of the compression chambers via a communication passage provided in the orbiting scroll member or the non-orbiting scroll member and is adapted to apply a back pressure to the orbiting scroll member to bias the orbiting scroll member toward the engagement position; and a first sealing means provided between the back pressure chamber and a suction zone of the compression mechanism and capable of maintaining sealing when the orbiting scroll member is axially displaced.

The invention relates to a quasi-phase-matching higher harmonic device based on ultrasonic modulation in the laser technical field, which comprises a femto-second laser, a focusing lens, an ultrasonic transducer, a bar type nozzle, a metallic film, an X ray spectrometer, a computer, a vacuum chamber, a decompression gas valve and a control panel. The output light path of the femto-second laser issequentially provided with the focusing lens, the ultrasonic transducer, inert gases, the metallic film and the X ray spectrometer. Lasers emitted by the femto-second laser is focused below the bar type nozzle by the lens and interact with the inert gases with density periodic variation which is spouted by the nozzle and modulated by an ultrasonic field to radiate higher harmonics which are reflected into the X ray spectrometer after being filtered by the metallic film and then are sent into the computer. The device meets the quasi-phase-matching condition of the higher harmonics by using ultrasonic modulation gas density, is convenient to be operated and simple and easy, can propel the coherent light source of the higher harmonics soft X ray to shorter waver.

The invention relates to an air-conditioner air supply temperature control method and system. The control method comprises the following steps of entering the air-conditioner cool air function mode and detecting whether the current running mode of an air conditioner is a refrigeration mode or not; presetting an initial value of an air supply temperature setting value TS to be TS0; detecting the current indoor air return temperature T1 and adjusting and correcting the air supply temperature set value TS according to the T1; detecting a current indoor unit operation air gear, and adjusting and correcting the air supply temperature set value according to the current indoor unit operation air gear; detecting whether the operation air gear is switched or not; detecting the current air supply temperature TC, comparing the current air supply temperature TC with the adjusted air supply temperature set value TS, and adjusting the operation frequency f of a compressor according to the comparison result. The air-conditioner air supply temperature control method and system have the advantages that the air supply temperature set value is corrected and controlled according to the indoor temperature and the indoor unit operation air gear, the comfortable air supply temperature is provided, local area air supply can be obtained, and energy conservation and environment protection are achieved.

The invention relates to a metallic fiber and multi-hole ceramic dielectricsurface burner, belonging to heat energy engineering technology area. The burner comprises burner shell, gas pipeline and air pipeline. In the empty cavity constituted by the burner shell, metallic fiber medium in combustion zone and ceramic medium in preheat zone are set from upper to lower in turn and two medium are tightened together. The material of metallic fiber medium in combustion zone is made of Fe-Cr-Al alloy and the material of ceramic medium in preheat zone is made of zirconia or silicon carbide. Compared with ordinary surface burner, the invention can prevent tempering effectively, improve the adjustable range of fuel and air and improve burning temperature in certain range so as to improve thermal efficiency. The burner in invention can burn natural gas, liquefied petroleum gas and mixed gas so on, also burn air fuel with low thermal value which is approached to 1000kcal / m3.

A clamping mechanism automatically adaptable to change of thickness of printed circuit board includes: a frame body having two parallel rail seats; two clamping rail members respectively mounted on the rail seats for clamping a printed circuit board, each clamping rail member including a first clamping rail and a second clamping rail spaced from each other by a clamping gap; and two adjustment units for adjusting the clamping gap of the clamping rail members. Each the adjustment unit includes: a support section mounted on the frame body to provide a support face; a connection section, one end of the connection section being affixed to the first clamping rail, the other end of the connection section being positioned above the support face; and a floating section positioned between the connection section and the support section and supported on the support face to apply a resilient support force to the connection section.

The invention discloses a sling for a spatial cable structure, which comprises a sling body, an upper-end anchorage connected with the upper end of the sling body, and a lower-end anchor device connected with the lower end of the sling body, wherein the lower-end anchor device comprises a lower-end anchorage, a connecting rod, a base and a revolute pair positioned between the connecting rod and the base, the connection rod is a long rod with a cylinder head on the lower end, the revolute pair is a ring-shaped ball support with an inner spherical surface as the end surface of one end, the base is a tower-shaped body with a step hole, a small upper end and a large bottom end, the end surface of the bottom end of the base is an inclined surface or a plane, the upper end of the connecting rod passes through the step hole of the base and is connected with the lower-end anchorage, the cylinder head on the lower end of the connecting rod is locked on the end surface of the inner spherical surface of the revolute pair in the step hole of the base, and the lower end of the sling body is in anchoring connection with the lower-end anchorage of the lower-end anchor device. The sling can rotate larger angles, move, extend, and be adjusted with the length, and can fully adapt the demand of a suspension bridge adopting spatial cables to the structural form of the sling.

The invention provides a continuously variable crown mill support roll to be matched with a roll curve of a continuously variable crown work roll. The roll shape is skew asymmetrical curve which essentially consists of a roll gap whole line contact curve section in the range of the strip width at the middle of the roll body and a contact line variable curve section at two ends of the roll; and the roll shape curves of an upper support roll and a lower support roll are the same but are arranged reversedly in an angle of 180 degrees The continuously variable crown mill support roll with the roll shape curve and the mill roll system with the continuously variable crown work roll can not only reduce uneven distribution and peak of the contact pressure between the roll, reduce or eliminate side spalling of the continuously variable crown mill support roll with normal crown, improve service cycle and service life of the support roll and reduce roll consumption of the support roll, but also overcomes harmful contact zone outside the rolled strip width and improves roll gap lateral rigidity of the mill and plate shape control efficiency of bending force, thereby improving plate shape quality of the rolling strip.

The invention relates to an SVPWM (Space Vector Pulse Width Modulation) control method for a Z-source inverter, belongs to the technical field of inverter control and solves the problem of generation of a larger inductive current ripple caused by the existing SVPWM control method for the Z-source inverter. The states of three switching tubes of an upper bridge arm are represented by eight vectors, and the eight vectors divide a control interval into six sectors. For taking the third (III) sector as an example, the vectors taking actions in Ts in each SVPWM period are allocated sequentially from left to right as 111, 110, 100, 000, 000, 100, 110 and 111, wherein the total acting time of a traditional zero vector is set as T0; the total acting time of a direct-through zero vector is set as t0 which is greater than 0 and less than or equal to T0; and the total acting time t0 of the direct-through zero vector is divided into four sections inserted between the acting times of the traditional zero vector and an adjacent effective vector, thereby realizing SVPWM control of the Z-source inverter. The SVPWM control method is suitable for the SVPWM control of the Z-source inverter.