30results about How to "Reduce runaway" patented technology

The invention discloses a frequency hopping communication method for a model airplane. Communication points are divided into the static communication points and dynamic communication points, and the two kinds of communication points are combined to form a frequency hopping meter with the high interrupting reconnection function and the high anti-jamming performance. Effective and rapid synchronization is achieved through the static communication points, the environmental electromagnetic interference is shunned through the dynamic communication points, and therefore control failures of the model airplane in the complex electromagnetic environment can be reduced.

The invention discloses a lateral suction range hood. The lateral suction range hood comprises a hood (1) and a movable smoke guide plate (2); the hood (1) is provided with a smoke inlet (10); the movable smoke guide plate (2) is switched between opening and closing states, and comprises multiple plates bodies (20, 21, 22); when the movable smoke guide plate (2) is located in the closing state, all the plate bodies (20, 21, 22) are arranged in a first direction (X) in sequence, and two adjacent plate bodies (20, 21, 22) in the first direction (X) are rotationally connected; and a rotating center line (O) of each plate body (20, 21, 22) is parallel to a second direction (Y). When the movable smoke guide plate (2) is located in the opening state, the movable smoke guide plate (2) is folded with the rotating center line of at least one plate body as a folding line, so that the extension length of the movable smoke guide plate is reduced.

The invention discloses an engine pressure balance system, which relates to the field of direct injection engines in gasoline cylinders. It includes air filter, air pump, air storage tank, solenoid valve, engine and sealed control cylinder, the air filter, air pump and air storage tank are connected in sequence; the air storage tank is connected with the third port of the solenoid valve; the solenoid valve The first port and the second port are respectively connected with the crankcase cavity and the intake pipe; the control cylinder is equipped with a control piston and a piston rod connected to it; the control piston seals the cylinder cavity on both sides; the left cavity of the control cylinder passes through The first conduit communicates with the inner cavity of the crankcase; the right cavity of the control cylinder communicates with the inner cavity of the cylinder on the upper side of the piston through the second conduit and the air passage; the two side walls of the control piston are elastically connected with the respective adjacent end cylinder walls through springs; the piston The distance between the left end of the rod and the two elastic contacts is 1mm. The invention can reduce the pressure difference between the upper side and the lower side of the piston in the cylinder, thereby reducing the phenomenon of gasoline running down and improving the lubricating stability of the engine oil.

The invention discloses a double-path connection M2M (machine-to-machine) system, which comprises an M2M terminal, an M2M platform and an application system, wherein the M2M terminal is respectively connected with the M2M platform and the application system, and the two paths of connection are based on different protocols; one path of connection realizes the data interaction between the M2M terminal and the M2M platform, and then the M2M platform and the application system establish a data transmission channel through the internet; and the other path of connection realizes the direct data interaction between the M2M terminal and the application system. The invention also discloses a double-path connection M2M terminal and a connection method thereof. The M2M system and the terminal disclosed by the invention have the characteristics of double paths of connection, the reliability of wireless communication is enhanced, and redundance backup and timely updating of acquired information are realized; and offline reconnection measures ensure connection online to the maximum extent, and the occurrence of a terminal incontrollable state is reduced.

The invention discloses a steering-by-wire control method of a joystick, comprising the following steps: collecting the joystick rotation angle δ d , and by the corner factor f δ and speed factor f u Correction, calculate the ideal steady-state front wheel angle Calculate the reference yaw rate ω according to the linear two-degree-of-freedom reference model r and the reference center of mass slip angle β r ; Detect whether the deviation between the actual yaw rate and the side slip angle of the center of mass and the reference value reaches the stability threshold; And calculate the braking torque of each wheel; the steering executive motor and the braking system perform actions according to the instructions. The invention can simplify the steering operation, improve the steering stability, save the space in the car, reduce the collision damage and easily realize the switching between the automatic driving mode and the manual driving mode.

The invention provides a control method for optimizing the reaction of mercury-free catalyzed synthesis of vinyl chloride by using a ventilating member. By setting a long rod-shaped ventilating member at the center of the converter tube, the raw material gas enters the tube-and-tube converter from the upper part, According to a certain ratio, part of it enters the annular catalyst bed, and part of it enters the ventilation component. The raw material gas entering the ventilation component flows from top to bottom along the axial direction of the ventilation component, and at the same time diffuses outward through the ventilation pores of the ventilation component in the radial direction. , into the annulus catalyst bed, thereby improving the contact path between the raw material gas and the catalyst, making the catalyst bed react evenly, and improving the temperature distribution of the converter from top to bottom and the catalyst bed in the tube from the inside to the radial direction; It can help to improve the effective utilization area of ​​the heat exchange tube of the converter, reduce the phenomenon of runaway temperature, prolong the service life of the catalyst, reduce the resistance of the bed layer of the converter, and improve the production efficiency of the catalyst and the device.

The invention relates to a fluidized bed reactor and a method for methanation of gas mixture containing H2 and CO. The fluidized bed reactor of the invention comprises a material gas inlet 1, a catalyst outlet 2, a gas-solid separator 5, a product gas outlet 6, a catalyst inlet 7 and a material gas lateral line inlet, wherein one or more gas distribution plate 3 is arranged in the fluidized bed reactor in order to divide the reactor into several fluidized bed layers to form several catalyst dense-phase zones; a cooling water spraying device 4 is arranged above each layer of the catalyst dense-phase zone in order to control temperature of the reactor. Because the circulating cooling water directly contacts high-temperature product gas, the reactor of the invention strengthens heat transfer, is easy to control reaction temperature, reduces heat loss during the heat transfer and improves heat utilization rate during the reaction. The reactor has the advantages of large production flux, big operation elasticity, high CO conversion rate, high selectivity of produced methane, less catalyst dosage, high utilization rate of heat quantity and so on, so that the reactor has good industrial application prospect.

The invention relates to the technical field of waste gas treatment equipment, in particular to a chemical waste gas recovery device for beneficiation agents; it can accurately and thoroughly recover the volatile waste gas at the ton barrel and reduce the escape of waste gas; it includes a gas collecting hood, a suction fan and a position Adjustment mechanism, the output end of the air collecting hood is communicated with the input end of the suction fan, and the position adjustment mechanism includes a mounting plate, a first driving cylinder, a lifting seat, a first half-circle tooth plate, a second half-circle tooth plate, a connecting support, a mounting seat and For the slider, the first driving cylinder is fixedly installed on the mounting plate, the lifting seat can be slid up and down and installed on the mounting plate, the output end of the first driving cylinder is fixedly connected with the lifting seat, and the first rotating shaft is rotatably installed on the lifting seat. The first semi-circular toothed plate is fixedly installed on the end of the second rotating shaft, the upper part of the connecting support is fixedly connected with the lifting seat, the mounting seat can be rotatably installed on the connecting support, the second semi-circular toothed plate is fixedly installed on the mounting seat, on the lifting seat A braking and driving mechanism for providing power for the rotation of the first rotating shaft is provided.

The invention provides a method and device for controlling the carbon content of high-nickel alloy cast iron. The method comprises the steps that the smelting temperature and heat preservation power of the high-nickel alloy cast iron are determined; the decarbonization curve of the corresponding carbon content of the high-nickel alloy cast iron is determined according to the smelting temperature and the heat preservation power; the initial carbon content value of the high-nickel alloy cast iron at a full-furnace state is determined through detection; the corresponding relation table of a corresponding carbon content supplementing value and time is determined according to a preset target carbon content value, the initial carbon content value and the decarbonization curve; and in the smelting heat preservation process of the high-nickel alloy cast iron, a carburant is added to a smelting furnace according to the corresponding relation table of the carbon content supplementing value and the time. According to the technical scheme, the continuous stability of the carbon content in the smelting heat preservation process of the high-nickel alloy cast iron is effectively guaranteed, the phenomenon that the carbon content of the high-nickel alloy cast iron is out of control is effectively reduced, and the product quality is guaranteed.

The invention discloses a methanol-to-propylene device, which comprises a first reactor, a first feed pipe, a second feed pipe, a third feed pipe, a cooling unit, a dimethyl ether separation tower, a heating furnace, The second reactor, separation unit, C4 rectifying tower, circulating hydrocarbon pipeline and steam pipeline; the present invention also discloses the corresponding methanol-to-propylene method; the present invention separates isobutane from circulating hydrocarbon and carries out the first reactor The first product stream obtained from the reaction of methanol to dimethyl ether is divided into three streams. The dispersed feed with different temperatures helps to reduce the phenomenon of reactor overheating. At the same time, by adjusting the gas-liquid ratio of the feed from the side line, it helps Efficient temperature control of the reactor.