157 results about "Open adjustment" patented technology

The invention discloses a car air conditioning system electronic expansion valve control method. Pre-adjustment value s0 of the valve opening of the electronic expansion valve is determined by the rotating speed of a compressor. Actual degree of superheat Tsh is calculated according to temperature and pressure of refrigerant of an outlet of an evaporator or an inlet of the compressor. The actual degree of superheat is compared with a presupposed interval of threshold values of the degree of superheat to obtain delta s. Control signals s of the adjustment valve opening are output to a controlling end of the electronic expansion valve after the pre-adjustment value of the valve opening is accumulated with valve opening adjustment increment. The car air conditioning system electronic expansion valve control method ensures that the valve opening of the electronic expansion valve arrives a condition according to default of the range of the threshold values of the degree of superheat to reduce adjustment ranges in a stage of adjustment of the degree of superheat, avoids frequent motions of the electronic expansion valve, prolongs service life of the electronic expansion valve, and further reduces system low-pressure pressure fluctuation, reduces energy consumption of the system and ensures normal and high-efficient operation of the system.

A wind engine has at least a central rotor (1) which has several groups of frameworks evenly distributed around it (2), each of the frameworks is provided with at least one set of power generation parts (3); the profile frame for the power generation parts is provided with a reversing and return booster (3g) for controlling the reversing speed, and each group of the frameworks is provided with a driver (8) and an opening adjustment positioner (7), and the brake releases or limits the reversing of the power generation parts by making or breaking the control circuit of the power distributor (21). The wind engine enables the power generation system to operate continuously and stably to generate power within the set varying range of different wind speed parameters and can improve power generation efficiency.

A multi-level fine choke manifold and an automatic control system belong to the field of fine automatic control of oil gas oil exploration technology. Aiming at the requirement of fine control on wellhead pressure, a plurality of plate valves and throttle valves are connected in parallel to form a chock manifold system. The automatic control system opens and closes different plate valves and continuously adjusts the opening of the throttle valves to achieve the aim of micro-adjustment of the wellhead back pressure under different pressure levels. The automatic control system can realize opening and closing of valves and non-disturbance switching in the process of opening adjustment so as to lead the adjustment process of the wellhead back pressure to be fast and stable, and guarantee the safe and smooth construction of fine pressure-controlled well drilling.

The invention discloses a visual variable opening crack grouting test device and method under hydrostatic and dynamic water conditions. The device comprises a grouting test platform, a data collectingdevice, a water supply device, and a connecting pipe. The grouting test platform comprises crack upper and lower discs, a crack opening adjustment block, a sealing rubber ring, and a water storage tank. The components of the grouting test platform are connected by bolts, and the water supply device and the grouting test platform are connected in series through the connecting pipe. The crack upperand lower discs of the grouting test platform are made of tempered glass and has the exact same size, and the grouting holes and the sensor setting holes are disposed in the discs. The crack openingadjustment block is used to adjust the crack opening degree and is respectively placed on the four corners of the crack upper and lower discs. The sealing rubber ring and the water storage tank are fixed to the side of the crack upper and lower discs by the bolts. The connecting pipe is composed of a wire pipe, a water amount regulating valve, an adapter valve, and a flow meter. The wire pipe is connected to the water storage tank and the flow meter respectively, and is connected to a water tank through the adapter valve.

A fuel cell system that generates electricity using an electrochemical reaction of fuel gas and oxidizing gas, having: a pressure adjustment valve which is provided on a fuel gas supply path for conducting the fuel gas from a fuel gas supply source to a fuel cell and which adjusts the supply gas pressure of the fuel gas; a degree of opening adjustment valve provided downstream of the pressure adjustment valve on the fuel gas supply path, the degree of opening thereof being set in stages or continuously in accordance with a degree of opening signal; and control means that adjusts the degree of opening adjustment signal in accordance with the operating condition of the fuel cell system and controls the state quantity of fuel gas supplied to the fuel cell to a target quantity. In this way, the pressure of fuel gas (for example, hydrogen gas) whose pressure has been reduced by the pressure adjustment valve can be further adjusted to the target pressure by the degree of opening adjustment valve provided downstream of the pressure adjustment valve in accordance with the operating condition of the fuel cell system.

This invention has publicized a more coke oven gathering of gas pipe pressure control device. It comprises the pressure gathering unit which is used to gather various collecting pipes' value of pressure, the reed valve opening detecting element which is used to examine various collecting pipes' reed valve's opening, the reed valve regulating unit which is used to adjust collecting pipe's reed valve's opening, the first control unit which is used to gathering unit gather value of pressure with the controlled variable which establishes in advance determining that the first opening adjustment quantity according to the pressure. This first opening adjustment quantity with the decoupling coefficient product determination which establishes in advance for the second opening adjustment quantity, the union current reed valve's opening, controls states the reed valve regulating unit with to state the second opening adjustment quantity according to this first opening adjustment quantity the superimposition result to make the adjustment to the reed valve. At the same time, this invention has also publicized a coke oven gathering of gas pipe pressure control method. Using this invention may reduce the pressure perturbation between various collecting pipes' effectively.

The invention discloses an air conditioner and a control method thereof. The control method of the air conditioner comprises the following steps of determining a frequency change value of a compressoraccording to a first compressor frequency before the compressor runs for a first preset time and a second compressor frequency after the compressor runs for the first preset time; determining an exhaust temperature difference value according to an actual exhaust temperature of the compressor; according to the frequency change value and the exhaust temperature difference value, determining an opening degree adjusting value of an electronic expansion valve, and the opening degree adjusting value = proportionality coefficient * the exhaust temperature difference value + integral coefficient * exhaust temperature difference value change integral value + the frequency change value * frequency change coefficient * outdoor environment temperature coefficient; and obtaining a target opening valueof the electronic expansion valve according to the opening adjustment value. According to the air conditioner control method, the response speed of the opening degree of the electronic expansion valve is high, the problems of refrigerant flowing noise, exhaust temperature fluctuation and the like of the air conditioner can be avoided, and the use comfort of a user is guaranteed.

The invention discloses a controlled cooling technology of high-alloy tool steel, which comprises the steps that controlled cooling is conducted by a water cooling line at the front of an RSM (rolling steel material) unit and a stelmor air cooling line, so that the high-alloy tool steel meeting a requirement is obtained; a 2-1# water tank and a 2-2# water tank which are at the front of the RSM unit are used for cooling, so that an appropriate rolling temperature of the RSM unit is obtained; the stelmor air cooling line obtains an optimal phase change transformation temperature through rollway speed adjustment, fan opening adjustment, and opening adjustment of an air cooling cover cap; and the high-alloy tool steel is obtained. The controlled cooling technology achieves grain refinement and a martensite ratio of above 85%, and the quality of a high-alloy tool steel coil rod is improved.

The invention relates to an artificial forced mature method to girth rockfishes, characterized in that adding yeast cell wall, mixture with abio salinous, phytic acid enzyme and methyl testis ketone, etc, into bait to force male parent fish to mature in web box on sea and enhanced feed in doors' pool, then by injecting DOM and ecology stimulus forces parent fish gonad to mature and oviposit naturally. This invention can achieve artificial control on parent fish sex of girth rockfishes with at least 70% triumph rate on sex adjustment. Meanwhile young functional male fish gained can be also used to production, which makes more than 50% parent fish come to sex mature and oviposit naturally and obtains mass high class gamete, thereby improve utilization rate of parent fish and productive capacity.

The invention discloses an opening adjustment method and device for a throttle valve. The method comprises the steps that an adjustment curve between opening deviations of the throttle valve and output currents of an electro-hydraulic proportional valve is established based on opening adjustment characteristics of the throttle valve; opening variation data of the throttle valve is acquired in real time, and the opening deviations of the throttle valve are calculated by use of the opening variation data and an opening set value; and current signals controlling the electro-hydraulic proportional valve are acquired to adjust the opening of the throttle value according to the opening deviations and the adjustment curve. Through the method, the nonlinearity requirement and the continuity requirement of the throttle valve during adjustment can be met at the same time, and adjustment precision can be remarkably improved.

A seesaw includes a manually rotatable actuator for adjusting the balance of the seesaw to accommodate a weight differential between two riders. After adjusting the seesaw, the actuator automatically locks the adjustment mechanism in place. A rack-and-pinion assembly provides fine adjustment, and a protective cover avoids creating a pinching hazard.

The invention discloses a precise fertilizer feeder. The fertilizer feeder includes a shell and a spiral sheave. The shell is provided with a conveying flow channel. The spiral sheave is arranged in the conveying flow channel. The spiral sheave is used for conveying fertilizer from a conveying flow channel inlet to a conveying flow channel outlet. The fertilizer feeder is also provided with an opening adjustment mechanism for adjusting the opening degree of the conveying flow channel inlet and / or conveying flow channel outlet. The fertilizer feeder solves the problem of a conventional fertilizer feeder that the accuracy of fertilizer feeding amount is affected by blockage, overhead, adhesion and the like caused due to the fertilizer is prone to moisture, and improves the accuracy of the fertilizer feeding of the fertilizer feeder. The fertilizer feeder is suitable for precise and variable fertilizer feeding control field in precision agriculture, and can realize the precise feeding ofthe fertilizer application amount determined by a control system.

The invention provides a control method of a heat pump air conditioner and the air conditioner. The control method of the heat pump air conditioner comprises the following steps of starting the heat pump air conditioner to release heat by utilizing an indoor unit of the heat pump air conditioner; detecting working condition parameters of the heat pump air conditioner; judging whether a working condition parameter of the heat pump air conditioner meets a preset extreme working condition; and if so, limiting the opening adjustment range of an electronic expansion valve of the heat pump air conditioner to be smaller than or equal to a preset adjustment limit value. According to the scheme, under the extreme working condition that the opening degree of the electronic expansion valve has greatinfluence on the exhaust temperature, large fluctuation of the exhaust temperature caused by excessive adjustment of the electronic expansion valve is avoided, and stable operation of a heat pump system is guaranteed.

The invention provides a ball valve suitable for gas-liquid two-phase flow. The ball valve has the flow adjusting function and comprises a valve body, connecting flanges, a valve element, a flow channel, a valve rod, a switch handle, a fluidization inner core, a fluidization hole, an adjusting rod and a fluidization adjusting handle. The two ends of the valve body are provided with the connecting flanges. The valve element is arranged in the valve body. The flow channel is formed in the valve element. The fluidization inner core is arranged inside the flow channel and provided with the fluidization hole. The upper end of the valve element is provided with the valve rod. The upper end of the valve rod is connected with the switch handle. According to the ball valve, the fluidization inner core is additionally arranged, the fluidization adjusting handle can be used for opening adjustment, the fluidization effect is achieved, gas and liquid are evenly mixed, flow can also be adjusted, and the number of auxiliary elements installed in a gas-liquid two-phase flow pipeline is greatly reduced, so that the assembly and disassembly difficulty is lowered, and the installation and maintenance cost is reduced.

Conventional coming-out of a trunnion pin is prevented to assure stable and smooth movement of a piston. Further, a rotary actuator, a rotary valve, and a connection structure that correspond to a cylinder output and a valve bore diameter are appropriately selectable, the number of parts is reduced, and a cylinder body is shaped so as to have the same cross-sectional shape in its axial direction. Coming-out of a trunnion pin is effectively prevented by a simple structure, a rotary actuator and a rotary valve are connected via an intermediate part, torque is received by the intermediate part, an opening adjustment means is incorporated to simplify the structure of the rotary actuator, and the intermediate part is made replaceable. Further, an indicator section for displaying the degree of opening of the rotary actuator is made to take thrust force occurring when an output is produced. In addition, open side and closed side air passages communicating an air passage are arranged in a side cover.

A supply and exhaust ventilation device (1) is provided with a supply air blow path (6) for blowing outside air (30) by a supply fan (8), and an exhaust air blow path (7) for blowing indoor air (33) by an exhaust fan (9). The supply fan (8) and the exhaust fan (9) are attached to a rotating shaft (10a) of one electric motor (10). Opening adjustment units (14) for adjusting the quantities of the outside air (30) and the indoor air (33) that pass through the supply air blow path (6) and the exhaust air blow path (7), respectively, are provided in the supply air blow path (6) and the exhaust air blow path (7).

The embodiment of the invention provides a water nozzle for a water injection well in an oil field. The water nozzle for the water injection well in the oil field comprises an opening determination device, an opening adjustment device, a piston rod and a valve, wherein the opening determination device is used for automatically collecting the current formation pressure data according to a preset period, and determining the current opening, corresponding to the formation pressure data, of the valve; the opening adjustment device is connected with the opening determination device and the piston rod, and is used for pushing the piston rod to move forwards or backwards according to the determined current opening; the valve is fixed on the piston rod, and is used for moving forwards or backwards along with the piston rod, so as to reach the determined current opening. With the adoption of the scheme, the formation pressure can be automatically collected according to the period, and the opening of the valve can be adjusted according to the formation pressure, so that the water injection effect is improved, the injected water volume of the stratum where a blanking plug is positioned is guaranteed, and the amount of labor of manual measurement and adjustment is reduced.

A cleaning element for a combine harvester having a plurality of cleaning element frames pivotable about parallel longitudinal axes. Each of the cleaning elements has a plurality of pivotal louvers connected to a longitudinal actuating element extending coaxially through the longitudinal pivoting axis of the cleaning frame. A ball joint connects the actuating element with an actuator so that pivoting of the louvers is accomplished independent of the pivoting of the cleaning element frame.

The invention discloses a large-caliber pipe fitting translation device which utilizes two groups of supporting frames to support and fix two ends of a pipe fitting, combines the pipe fitting to forma whole, changes a gravity center position of the pipe fitting through an angle opening adjustment between the supporting plates and is suitable for different terrains. The large-caliber pipe fittingtranslation device is characterized in that hinge frames are correspondingly arranged on two opposite outer side walls of a buffer cylinder sleeve, an included angle between a plane where the hinge frames are positioned and an outer side surface of the buffer cylinder sleeve is 45 degrees, one end of a main supporting frame is arranged on one hinge frame in a hinge mode, an adjusting plate is fixedly arranged on the middle of the main supporting frame, a movable wheel is arranged on the other side of the main supporting frame through a fixing plate, the one end of an auxiliary supporting frameis arranged on the other hinge frame in the hinge mode, the adjusting plate is fixedly disposed in the middle of the auxiliary supporting frame, and the movable wheel is mounted on the other end of the auxiliary supporting frame through the fixing plate, one side of the fixing plate is vertically disposed with a lifting ring plate, the other side is vertically disposed with an adjusting limit plate, and the adjusting limit plate is a V-shaped structure.

The invention discloses a vehicle-mounted air conditioner air outlet, and relates to the technical field of vehicle-mounted air conditioners. The vehicle-mounted air conditioner air outlet comprises an air conditioner air outlet device with two layers of blades. The air conditioner air outlet device comprises a frame, blade connecting rods with through holes, the blade on the inner layer and the blade on the outer layer. The frame is provided with a guide groove and guide groove through holes. One end of the blade on the outer layer is provided with a first circular shaft. The other end of the blade on the outer layer is provided with a second circular shaft and a third circular shaft. The blade on the inner layer is arranged on the frame through the guide groove and the guide groove through holes. The first circular shaft and the second circular shaft of the blade on the outer layer pass through the guide groove and penetrate through the guide groove through holes to be connected with the frame. The third circular shaft penetrates through the connecting rod through holes to be connected with the blade connecting rods. An air opening adjustment block used for thumbing the blade on the inner layer and the blade on the outer layer is arranged at the center of the frame. The vehicle-mounted air conditioner air outlet can solve the problems that a double-blade type air outlet is difficult to assemble due to the complex structure, the style of the blades affects the comfort of a whole vehicle, and the blades are soft due to the fact that the blades are too long.