71results about How to "Realize interlock control" patented technology

The invention discloses an automatic switch pneumatic linkage anti-collision air door, solving the safe hidden trouble to the production of coal mine because the reliable closedown can not be realized in the prior air door, provided with simple structure, convenient usage reliable closedown. The structure is that it comprises a pair of air doors and a railway passes through them; at two sides of said air doors a starting device is set and on each air door there are a controller of air door and a closedown switch of air door; at the same time on railways there are car stoppers respectively; the starting device, the air controller, the closedown switch of air door and car stoppers are connected with the central controller; the central controller controls the air door in interlocking.

The invention relates to an integrated device for treating mine water with diatomaceous earth, and belongs to the technical field of mine water treatment. The integrated device comprises a water inletpipe, a dosing pipe, a pipeline mixer, a water inlet branch pipe, a reaction chamber, a guide cylinder, a separation chamber, a filtering region, a backwasher and a water outlet pipe, wherein the pipeline mixer is respectively connected with the water inlet pipe, the dosing pipe and the water inlet branch pipe; the water outlet pipe is arranged at an upper part of the separation chamber; the guide cylinder is arranged in the separation chamber; the reaction chamber is arranged in the guide cylinder; the filtering region is arranged at a periphery of the guide cylinder in the separation chamber; and the backwasher is arranged above the filtering region in the separation chamber. The integrated device provided by the invention integrates various functions of coagulation, sedimentation, filtration and adsorption, has advantages of simple process, small occupied area and convenient operation and management, and effectively reduces operating costs while ensuring stable water quality.

The invention discloses a baby carriage. The baby carriage comprises first support legs and second support legs connected with wheels, wherein the first support legs are provided with a transverse shaft, the transverse shaft is connected with first rotating sleeves capable of rotating relative to the transverse shaft, the transverse shaft is also connected with second rotating sleeves capable of rotating relative to the transverse shaft only after the first rotating sleeves rotate, the lower ends of the second rotating sleeves are connected with the second support legs, a locking device capable of preventing each first rotating sleeve from rotating is arranged between each first rotating sleeve and the transverse shaft, the upper ends of the first rotating sleeves are connected with support rods capable of rotating along with the first rotating sleeves, hand push rods capable of sliding up and down in the support rods and capable of driving the locking devices to be unlocked after sliding down are arranged in the support rods, and a latching device for latching each hand push rod and each support rod is arranged between each hand push rod and each support rod. The baby carriage disclosed by the invention is simple in structure and convenient to operate and has a small volume after being folded.

The invention discloses a precisely-metering disc feeder, as well as a liquid adding device and application thereof, and aims to solve the problems that when a metering screw conveyor and a star-like valve are used for conveying a sticky material with the particle size smaller than or equal to 100 microns and poor fluidity, powder is non-uniformly distributed at a discharge port under the actions of blade pushing and own stickiness or electrostatic adsorption between molecules of fine powder, while the conventional disc feeder also has the defects of non-uniform distribution and very frequent signal feedback and driving speed adjustment of a metering belt conveyor. The precisely-metering disc feeder comprises a bottom plate, a side plate, a top plate, a fixed-height fixing device, a scraping disc, a scraping plate, a rotary driving device, a connecting shaft and a control system. The precisely-metering disc feeder effectively solves the problem that the sticky material with the particle size smaller than or equal to 100 microns and poor fluidity is non-uniformly discharged, does not need to use the metering belt conveyor in the conventional disc feeder, and effectively simplifies the overall operating difficulty and the maintenance cost.

The invention provides a gas filling control system and method of an LNG double-gun gas filling machine. The gas filling control system comprises two gas filling systems, wherein each gas filling system comprises a gas filling gun, a liquid phase pipeline, a gas return gun, a large circulation pipeline, a small circulation pipeline and an electronic meter controller; each liquid phase pipeline isprovided with a liquid phase valve and a liquid phase flow meter; each gas filling gun is connected with the downstream end of the corresponding liquid phase valve; the upstream end of each liquid phase flow meter is connected to a liquid inlet in parallel; the upstream end of each large circulation pipeline is an idle gas filling gun inserting opening; the upstream end of each small circulation pipeline is provided with a gas phase flow meter connected with the corresponding gas return gun, and the downstream end of each small circulation pipeline is connected with the corresponding large circulation pipeline; the downstream end of each large circulation pipeline is connected to the corresponding gas return opening in parallel; each liquid phase pipeline is positioned on the upstream portion of the corresponding liquid phase flow meter and connected with the corresponding large circulation pipeline through a gas return valve; each electronic meter controller is electrically connectedwith the corresponding liquid phase flow meter, the corresponding gas phase flow meter, the corresponding gas return valve and the corresponding liquid phase valve; and the two electronic meter controllers conduct signal transmission through a communication line. By means of the control method, the running states of the two gas filling systems are subjected to interaction control.

Disclosed is a multi-section voltage comparator. A plurality of different threshold voltages is respectively connected to non-inverting input ends of a plurality of comparators. An input voltage is simultaneously connected to an inverting input end of each comparator. A comparator with the lowest threshold voltage is directly powered by a positive single power supply, and the other comparators arepowered by a controllable power supply. When the comparator is powered by a controllable power supply, the controllable power supply supplies power to the positive power supply end of the comparatoronly when all comparators whose threshold voltage is lower than the comparator output low electrical level; otherwise, the controllable power supply stops supplying power to the positive power supplyend of the comparator. When the multi-section voltage comparator is used in a compensation type alternating current voltage regulator, a sampling value of the alternating current power supply voltageis compared with a plurality of threshold voltages, and an output triggering gate control value controls the on-off combination state of a bidirectional thyristor in a thyristor switch group, so thatthe work process is stable and reliable.

The invention discloses a seawater desalination water intake system of a thermal power plant, and a control method thereof. The system comprises a water intake pump, a water intake main pipe and water intake branch pipes, wherein the water intake main pipe comprises a plurality of input ports and a plurality of output ports, the input ports of the water intake main pipe are connected with the output ports of the plurality of water intake branch pipes, the input port of each water intake branch pipe is respectively connected with a water outlet pipe of a circulating water pump, and a water inlet valve for controlling on-off of water intake is arranged on each water intake branch pipe; the output ports of the water intake main pipe are connected with a plurality of water intake pumps, and the water intake pumps deliver seawater to a rear-end seawater desalination pretreatment system; and the water inlet valve and water intake pumps are all controlled by a controller. The seawater desalination water intake system can realize interconnected control of a seawater desalination water intake system, a circulating water dosing system and a circulating water pump, dispenses with construction of a single water intake pump room and arrangement of filter equipment, and is flexible and convenient in operation.

The invention discloses an automatic-coupling compensating three-phase alternate-current voltage stabilizer. The automatic-coupling compensating three-phase alternate-current voltage stabilizer comprises automatic-coupling compensating type three-phase main circuits, a compensating control unit, a triggering unit and an error detection control unit. Each phase main circuit comprises a compensatingtransformer, an automatic-coupling transformer, a thyristor switch set and a relay protection switch, and the same compensating mode is adopted for realizing compensation. The compensating control unit outputs a three-phase triggering control signal to the triggering unit and the error detection control unit; the triggering unit emits a triggering signal according to the input triggering controlsignal to control on-off of thyristors in the thyristor switch sets in the three phase main circuits; the error detection control unit starts/stops protection for the thyristor switch sets in the three phase main circuits according to the judgment about whether or not the input triggering control signal is wrong. The voltage stabilizer realizes interlocking control, meanwhile conducts open circuitprotection on the thyristor switch sets according to the judgment about whether or not logical errors occur on a control circuit, effectively enhances the protection effort for abnormal conditions during work, and works more stably and reliably.

The invention discloses a pneumatic gear shifting control system assembly for an auxiliary box of a multi-gear transmission, and belongs to the technical field of automobile transmissions. The problem that at present, when main and auxiliary box interlocking and post-gear-shifting neutral prevention are achieved through a high and low gear pneumatic gear shifting system of an auxiliary box of a domestic double-intermediate-shaft multi-gear transmission by means of a mechanical structure, because a certain period of time is needed in the pneumatic gear shifting gas pressure establishing and pneumatic driving process, the mechanical structure and a pneumatic element frequently impact on each other during use and wear is caused is solved. According to the pneumatic gear shifting control system assembly, a gas inlet of a reversing valve is connected with a gas source filter pressure reducing valve all the time, it is ensured that gas exits in a high-gear gas outlet or a low-gear gas outlet of the reversing valve all the time, and therefore gas exists on the high-gear and/or low-gear side of a gear shifting cylinder all the time and the aim of post-gear-shifting neutral prevention is achieved. In addition, a check valve in the pneumatic gear shifting control system assembly is arranged between a gas source and a gear shifting switch, the check valve is controlled to be opened and closed through a check valve electric shock thumbing head which is connected with a main box gear shifting mechanism, the check valve cannot be opened until a main box is at the neutral gear, and interlocking of the main box and the auxiliary box is achieved.

Disclosed is a touch switch interlocking configuration method. A computer is connected to a distributed wireless communication network to configure wirelessly-networked touch switches. Each wirelessly-networked touch switch comprises a switch microcontroller module, a communication module, a plurality of pairs of switch input modules and switch drive modules, and the like. The multiple wirelessly-networked touch switches and other function distribution units configured on demand constitute a control system through the distributed wireless communication network, which is flexible and convenient. The electric switches in the multiple wirelessly-networked touch switches can be arbitrarily configured to realize local-remote control or multi-site control. The interlocking configuration state of the electric switches can be canceled at any time or reconfigured. The touch switch interlocking configuration method can be implemented on site by connecting a computer to a distributed wireless communication network, and is quick, convenient and flexible.

The invention discloses a railway signal power voltage stabilizing device, and the device comprises an analog-to-digital conversion coding unit, a decoding gating unit, a delay protection unit, a trigger gating configuration unit, a trigger unit, an error detection and discrimination unit, a protection drive unit, and an auto-coupling compensation main circuit, wherein the auto-coupling compensation main circuit comprises a compensation transformer, an autotransformer, a thyristor switch group, and a relay protection switch. The analog-to-digital conversion coding unit samples an AC power supply voltage, and the output is decoded and delayed, and then is sent to a trigger gate configuration unit to output a trigger control signal to control the on and off of a thyristor in the thyristor switch group. The voltage stabilizing device can adjust the number of partitions of an input voltage range AC voltage, and changes the compensation mode and the compensation precision. While implementing the interlocking control, the error detection and discrimination unit and the protection drive unit start/stop the protection of the thyristor switch group to control the power supply of the triggerunit according to a condition of whether a trigger gate control value is valid or not, thereby effectively strengthening the protection of the voltage stabilizing device in the working process duringan abnormality.