18results about How to "Accurate opening control" patented technology

The invention discloses a cooling system and a server cabinet, and relates to the technical field of server cabinets, and the cooling system comprises a cooling module and at least two cooling branches. The cooling branch is provided with a control valve, a detection assembly and a cold plate module used for cooling working devices in the server. The cooling module is connected with each cooling branch, the cooling module is used for providing a cooling medium for each cooling branch, the cooling module comprises a control module, and the control module is used for being in communication connection with a server, a control valve and a detection assembly in each cooling branch; the control module is further used for receiving the working performance parameters of the working devices in the servers in the cooling branches and the cooling medium performance parameters detected by the detection assembly so as to control the opening degree of the control valves in the corresponding cooling branches. The cooling system solves the problem that the server node flow in the server cabinet cannot be adjusted in real time.

The invention discloses a natural gas supply device for an industrial furnace, which relates to the technical field of gas supply systems for industrial furnaces, and comprises an annular guide rail which is arranged at the side end of a gas inlet flow regulation and control valve pipe in a sleeving manner and is used for driving an adjusting shaft and an ultrasonic generator to be positioned at the side end of a gas inlet pipeline to carry out ultrasonic frequency emission regulation and control, under the cooperation of the oxygen-containing regulation and control assembly, the oxygen content proportion in the natural gas in the oxygen-containing conveying pipe is rapidly corrected, the precise oxygen content needed by combustion of the industrial furnace is guaranteed, super-uniform mixing of natural gas and oxygen is integrally achieved, the incomplete combustion phenomenon caused by fluctuation of the oxygen content is reduced, and the heating effect and the product quality are improved; and under the cooperation of the ultrasonic adjusting assembly, more complex pipeline impurity conditions can be treated, so that emission parameters and reflection angles of self-adaptive automatic adjustment ultrasonic waves are formed, natural gas conveying is smoother, and therefore the combustion stability and heat efficiency of the industrial furnace are improved.

The invention discloses an intelligent adjustment power plant combustor and an adjustment method thereof, and relates to the technical field of power plant combustors, and the combustor comprises a combustion assembly, a flue gas circulation assembly, a gas inlet adjustment assembly, a fuel gas supply assembly, a control system and a monitoring module. The controller controls the opening degree of related parts according to fuel, air volume and nitrogen oxide monitoring data, combustion optimization is achieved, and nitrogen oxide emission is reduced. The adjustment method comprises the steps of data setting, starting, ignition, operation adjustment, shutdown and fault processing. The combustor can accurately control all parameters, improve combustion efficiency, enhance safety and reliability, flexibly cope with working condition changes, effectively solve the problems that a traditional combustor is high in nitrogen oxide emission, unstable in combustion and the like, is suitable for the fields such as power plants needing efficient and clean combustion, and has remarkable environmental protection and economic benefits.

The invention discloses a blast furnace airflow closed-loop control method which comprises the following steps: acquiring charge level data and material distribution parameters through online laser scanning equipment and furnace top material distribution equipment, calculating the size of a blast furnace center funnel and the material distribution speed, calculating a center coke material distribution error, establishing a center coke control algorithm, and controlling the material distribution speed by controlling the opening degree of a material flow valve. Therefore, the center coke distribution error is adjusted, and closed-loop control of blast furnace airflow is achieved. According to the embodiment of the invention, the size of the central funnel and the material distribution speed of the blast furnace are calculated in real time, and the data are transmitted to the controller to control the opening of the material flow valve, so that the problem of inaccurate material distribution control caused by incapability of detecting the central material speed can be solved, and furnace core accumulation caused by excessive central coke quantity is avoided.

The embodiment of the invention discloses an operation method of a multifunctional test system of a vacuum angle valve. The multifunctional test system of the vacuum angle valve comprises a control module, a position sensing module, a pressure adjusting module and a negative pressure generating module. The operation method comprises the steps that position information of the position sensing module is obtained through the control module, the pressure of the gas control end or the pipeline inlet of the angle valve to be measured is adjusted through the pressure adjusting module, and the negative pressure of the pipeline outlet of the angle valve to be measured is adjusted through the negative pressure generating module. At least two of the stroke, the response time, the control pressure, the fatigue test and the withstand pressure of the to-be-tested angle valve are tested. According to the operation method provided by the embodiment of the invention, multiple tests can be performed on the to-be-tested angle valve so as to meet the scene requirements of frequent tests and debugging in the research and development process of the pneumatic angle valve.

The present invention is an ultra-low nitrogen gas burner, comprising a burner housing, a flame tube, a central gas distributor assembly, a bypass ignition gun assembly, a central gun mechanism, a damper adjustment mechanism assembly and a burner control box, wherein the flame tube is installed at the front end of the burner housing through a rotating flange assembly, the central gas distributor assembly is arranged at the center of the inner cavity of the rotating flange assembly, the bypass ignition gun assembly is fixedly installed on the central gas distributor assembly, the central gun mechanism is arranged at the center of the inner cavity of the central gas distributor assembly, the damper adjustment mechanism assembly is arranged on one side of the burner housing, the gas burner control box is arranged on the other side of the burner housing, the first gas supply channel is connected to the central gas distributor assembly, the second gas supply channel is connected to the central gun mechanism through a central metal hose, and the third gas supply channel is connected to the bypass ignition gun assembly through a bypass ignition metal hose. Beneficial effect: The furnace temperature can be reduced, thereby reducing the generation of NOX.

The utility model discloses a kind of heat management system and air conditioner, it is related to air conditioner technical field, wherein, heat management system includes integrated valve island, heat exchanger assembly and temperature sensing module;Integrated valve island includes valve island ontology and first throttling device, multiple flow passages are equipped in the valve island ontology, and the first throttling device is integrated on the flow passage;Heat exchanger assembly includes plate heat exchanger, and the plate heat exchanger is equipped with the first refrigerant inlet and outlet and first refrigerant inlet communicating the flow passage;Temperature sensing module is at least partially placed in the flow passage, to carry out temperature detection to the refrigerant flowing through the temperature sensing module;The technical scheme provided by the utility model can realize accurate temperature measurement.

The invention relates to the technical field of water conservancy projects, in particular to a fishway pool chamber water depth control system and method. The method comprises the following steps: calculating the flow of the Danille abrupt slope fishway through the amplitude of the upstream water level of the river reach of the dam hub. The ultrasonic fish finder is used for recognizing the types, body types and the number of fishes coming from the fishway inlet. And calculating the running flow, the flow velocity and the water depth of the main fishway in combination with meteorological and hydrological information and fish data. And according to the flow of the Danille steep slope fishway and the running flow of the main fishway, auxiliary regulation and control flow is calculated. And the opening degree of the gate is calculated according to the auxiliary regulation and control flow and the water level information of the movable gate, and an instruction is sent to the opening degree controller. In the opening process, the water flow characteristics of the main fishway and the Danille steep slope fishway are monitored, and the fish dynamic state is monitored through the ultrasonic fish finder. And comparing the actual water flow characteristic with an expected value, sending an opening degree optimization instruction, and repeatedly adjusting until the expected water flow characteristic and the fish passing rate are achieved, so that the fish upstream tracing effect is improved.

The invention provides a heavy oil horizontal well segmented oil extraction pipe column and a control method, and belongs to the technical field of oil extraction. Specifically, a part which extends to the position below the second limiting piston and is in sliding sealing fit with the first limiting piston is additionally arranged on the first cylinder sleeve part of the inner cylinder sleeve, and a second opening is creatively formed in the part, so that the part and the second opening are combined together to form the separate recovery pipe column for the heavy oil horizontal well. The on-off state between the first opening and the third opening is controlled; meanwhile, according to the thick oil horizontal well separate recovery pipe column, the electric push rod directly pushes the inner cylinder sleeve, the second opening is switched between the on-off position, and the situation that metal materials of the center pipe, the inner cylinder sleeve and the outer cylinder sleeve interfere with actions of electromagnetic materials is avoided. Therefore, the thick oil horizontal well separate recovery pipe column has the advantages of being reliable and accurate in control action.

The invention discloses an automatic feeding device for powdery explosives. Comprising a feeding supporting plate, a feeding hopper fixed to the lower portion of the feeding supporting plate, a guide sleeve with an opening connected to the middle of the feeding supporting plate, a discharging rod inserted into an inner hole of the guide sleeve, a valve body fixed to the lower end of the discharging rod and a discharging rod control assembly used for driving the discharging rod to move up and down. The discharging rod control assembly comprises a driving nut connected to the side wall of the upper end of the discharging rod in a threaded mode, a driving motor arranged above the feeding supporting plate and a worm and gear mechanism connected between the driving motor and the driving nut. The driving motor drives the driving nut to rotate through a worm and gear mechanism, the discharging rod is controlled to move up and down, and then the valve body is controlled to open or close a discharging hole of the feeding hopper. According to the automatic feeding device, unmanned operation in dangerous places is achieved.

A material constant temperature device comprises an outer sleeve, an inner pipe is arranged in the outer sleeve, the inner pipe is provided with a material inlet and a material outlet, and the outer sleeve is provided with a hot water inlet and a hot water outlet. The hot water inlet is connected with an outlet of a tubular heat exchanger through a pipeline and further connected with a water source through a pipeline and a water supplementing valve, the hot water outlet is connected with an outlet of the tubular heat exchanger through a pipeline, and a temperature sensor and a water pump are arranged on the pipeline between the hot water outlet and the outlet of the tubular heat exchanger. A steam inlet of the tubular heat exchanger is connected with a steam source through a pipeline, a steam adjusting valve, a steam automatic stop valve and a manual stop valve. According to the material constant temperature device, the tubular heat exchanger is used as a heat exchange part, efficient heat exchange of materials is achieved through circulating flowing of hot water and steam, and energy consumption is reduced. And through linkage of the steam regulating valve and the temperature sensor, the steam opening degree is accurately controlled, and therefore accurate regulation and control over the hot water temperature are achieved.

The application relates to the technical field of vacuum control, and provides a control system and method of a vacuum butterfly valve and a medium. The application aims to solve the problems of poor expansibility, high module coupling degree and easy fault interlocking of the control system of the existing vacuum butterfly valve. The method is applied to a main control module of the control system of the vacuum butterfly valve, and the control system of the vacuum butterfly valve further comprises a driving module and an air pressure acquisition module. The method comprises the following steps: acquiring current pressure information of a preset cavity collected by the air pressure acquisition module; acquiring opening degree adjustment information corresponding to a target valve plate in the preset cavity according to target pressure information and the current pressure information; and controlling the driving module to adjust the opening degree of the target valve plate according to the target opening degree information. The method is independently operated through the functions of main control, driving and acquisition, coupling is reduced, and the system stability and maintainability are improved. Meanwhile, through step-by-step collaborative processing of pressure acquisition, opening degree calculation and driving execution, the signal processing efficiency and system response speed are improved.

The application relates to the technical field of full premix gas water heaters, and discloses a full premix gas water heater, a control method thereof and a computer readable storage medium. The full premix gas water heater comprises a premixing cavity, a fan, an air door, a driving device and a position detection device, the driving device is used for directly driving the air door, the position detection device is used for detecting the opening degree of the air door, the control method comprises the following steps: in response to a heating instruction, a first air door control signal is generated, or a first air door control signal and a first fan control signal are generated; the first air door control signal is sent to the driving device, so that the driving device adjusts the opening degree of the air door, and the actual opening degree of the air door is received by the position detection device; and / or the first fan control signal is sent to the fan, so that the fan adjusts the rotating speed of the fan according to the first fan control signal. In the above manner, the control efficiency of the air door can be improved, the time for air to enter the premixing cavity is shortened, and the heating efficiency is improved.

The utility model discloses a kind of mechanical throttle pedal signal acquisition devices, it is related to the technical field of pedal, including suspension type pedal mechanism, signal conversion module;Pedal mechanism includes pedal seat, throttle pedal and pull rod;Pedal seat is installed on fixed frame;The front end of throttle pedal is rotationally installed on pedal seat, its rear end extends rearward and is installed with foot pedal in cantilevered mode;Throttle pedal is provided with torsion spring between pedal seat;Pull rod is fixed at the front end of throttle pedal, and extend in the direction away from throttle pedal;The other end of pull rod is hinged with pull line ring, and pull line ring is fixed with throttle pull line;Signal conversion module includes sensor support and linear displacement sensor;Linear displacement sensor includes detection body and telescopic rod;Telescopic rod is always abutted on pull rod. Through the cooperation of suspension type pedal mechanism and signal conversion module, the accurate detection to throttle pedal position change is realized.

The invention provides a reversing buffer control method and system for the piston stroke of a hydraulic drive compressor, and relates to the technical field of buffer control. Dynamic pressure signals of a hydraulic cavity and stroke signals of a piston during piston reversing are collected, and feature information representing pressure impact and oscillation and stroke deviation information are extracted; determining wear level data through trend analysis and calculating a coupling coefficient of the two, performing pressure fluctuation suppression by combining the feature information, the coupling coefficient and wavelet analysis to obtain an initial adjustment instruction, and generating a buffer compensation value based on the wear level data so as to optimize the initial adjustment instruction; according to the method, the target adjusting instruction for controlling the opening speed and the opening degree of the valve element of the bidirectional hydraulic lock is obtained, piston reversing pressure fluctuation suppression and buffer compensation accurate adaptation can be achieved, stable action of the valve element is guaranteed, and the stability and the adaptability of reversing buffer control of the hydraulic drive compressor are improved.

The utility model discloses a visual test device for simulating seepage behaviors of jointed loess. The visual test device comprises a water inlet unit, a water permeable unit and a water seepage unit which are sequentially connected from bottom to top, the water inlet unit comprises a water inlet pressure chamber, the water seepage unit comprises a semi-cylindrical side plate, a rectangular side plate and a top plate, the semi-cylindrical side plate and the rectangular side plate are fixedly connected to form a semi-cylinder, the top plate is fixedly connected to the top end of the semi-cylinder, and the water seepage unit is arranged between the water inlet pressure chamber and the semi-cylinder. The rectangular side plate is made of organic glass, and a high-definition digital camera is installed on one side of the rectangular side plate. The device is simple and easy to manufacture, the erosion of the joint-containing loess under the condition of water flow seepage can be simulated through simple operation, the workload and the test cost are reduced, the evolution process of the joint form along with seepage can be visually observed, and a new thought is provided for indoor joint-containing loess seepage test simulation.

The invention provides a water flow adjusting device and a gas water heater. The water flow adjusting device comprises a shell, and the shell is provided with a water inlet and a water outlet; the flow stabilizing assembly is arranged in the shell and divides the shell into a first cavity and a second cavity, the first cavity is communicated with the water inlet, the second cavity is communicated with the water outlet, and water flow enters the shell from the water inlet, passes through the flow stabilizing assembly and then flows out of the shell from the water outlet; the flow stabilizing assembly comprises a first flow stabilizing part and a second flow stabilizing part, a water passing channel is formed between the first flow stabilizing part and the second flow stabilizing part, and the first flow stabilizing part and the second flow stabilizing part are movably matched so that the opening degree of the water passing channel can be matched with the water inlet pressure. According to the device, the opening degree of the water passing channel can be accurately controlled under the condition that the water inlet pressure is certain, then the water flow of the water passing channel is accurately controlled, and it is guaranteed that the water flow is stable.

The invention relates to the technical field of garden construction equipment, in particular to a cobblestone footpath paving device and method for landscaping. The device comprises a vehicle body, a concrete paving module, a cobblestone paving module and a control module, the concrete paving module, the cobblestone paving module and the control module are installed on the vehicle body, the concrete paving module is fixed to an upper frame at the front end of the vehicle body through welding, and the cobblestone paving module is installed on the upper surface of the rear end of the vehicle body and located behind the concrete paving module; the control module is respectively connected with the concrete paving module and the cobblestone paving module; the concrete paving module comprises a concrete hopper, a discharging door and a concrete pressing plate, the discharging door is installed at the bottom of the concrete hopper, and the concrete pressing plate is installed at the rear end of the discharging door. The cobblestones can accurately fall into a designated position, so that high-precision cobblestone footpath laying is realized.