IPDB › China Industry › Industrial Equipment & Components › Valve Parts
Heavy-Duty 90 Degree Explosion Proof Electric Actuators for Industrial Use1
Valve Parts, Explosion Proof Actuator, 90 Degree Actuator
Jiangsu Leicester Measurement and Control Technology Co., Ltd.
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Product Description Product Description 1. Product overviewQT Series Electric Actuator is used to control valves with 0° -270° rotation and other similar products, such as butterfly valves, ball valves, air throttles, baffle valves, plug valves and shutter valves. It can be widely applied in petroleum, chemical engineering, water treatment, shipbuilding, paper, power stations, heat supply, building automation, light industry and other industries. Driven by 380V/220V/110V AC power and controlled with 4-20mA current signals or 0-10V DC voltage signals, it can make the valve move to the required position for automatic control. The maximum output torque is up to 2,000Nm (The product has been certified by explosion-proof certification, with guaranteed quality).2. Performance characteristics2.1 HousingThe housing is made of hard aluminum alloy, with anodic oxidation treatment and polyester powder coating, contributing to its strong corrosion resistance. It has a protection class being IP67 and is also optional for IP68 and the explosion-proof type.2.2 MotorThe fully enclosed squirrel-cage motor has a small size, a large torque and a small inertia force, with an insulation class F and a built-in thermal protection switch to prevent damages to the motor caused by overheating.2.3 Manual structureThe handwheel design ensures its safety, reliability, labor saving and small size. When it's not energized, pull the clutch handle for manual operation. When it's energized, the clutch will be reset automatically. (Note: when the motor is not energized, the electric actuator will maintain a permanent manual state)2.4 IndicatorThe indicator is mounted on the central shaft and used to observe the valve position. The mirror adopts a convex lens design with no water accumulation, thus easier for observation.2.5 DryerIt's used for temperature control to prevent water condensation inside the actuator caused by temperature and weather changes, thus keeping internal electrical elements dry.2.6 Limit switchMechanical + electronic limit. The mechanical limit screw is adjustable, being safe and reliable; while the electronic limit switch is controlled by the a cam mechanism, and the position can be set accurately and easily just by means of adjusting the mechanism simply, without battery support (All micro-switch contacts are silver contacts).2.7 Torque switchIt can provide overload protection (except QT-005/008/010), which can automatically disconnect the motor's power in case of valve clogging or any foreign matter, thus more effectively protecting the valve and the electric actuator from being damaged (It's provided with factory settings, so please don1 change such settings without authorization).2.8 Self-lockingThe precision double worm gear mechanism can transmit the large torque efficient, featuring high efficiency, low noise (maximum 50 dB), a long life, a self-locking function to prevent reversion, and a transmission part being stable and reliable. It has been filled with high-performance grease before delivery, so the users needn't to do it again.2.9 Anti-off boltWhen the housing is removed, the bolts are attached to the housing without falling off. All external bolts are made of stainless steel.2.10 InstallationThe bottom installation size is in line with the international standard 1505211, and the driven shaft sleeve is removable to be processed as required, thus being very adaptable. It can be installed either vertically or horizontally.2.11 CircuitThe control circuit is in line with the single-phase or three-phase power supply standards; the circuit layout is compact and reasonable; and the connecting terminals can effectively meet requirements for various additional functions. The valve is opened and closed in place, and all are provided with passive contact outputs (also available for customization as required by customers).2.12 Intelligent moduleIt adopts a control panel mixing single-chip and analog circuit with a high degree of integration and very low power consumption, and also all-metal external hanging installation so as to effectively isolate the actuator motor heat source and the control panel, thus greatly improving the anti-interference performance and temperature resistance of the software and hardware.2.13 Digital display of valve positionIn the opening or closing process of the actuator, the LCD screen provides real-time display of valve position changes in large numbers.2.14 Automatic adjuS1ment of phase sequenceThe intelligent actuator can automatically detect the phase sequence of the connected three-phase power supply, so the users needn't to consider it.Main technical parameters, specifications3.1 Technical parameters of QT series electric actuatorModelMax output torque90°Action time 60/50 HzMax shaft diameterMotor class FRated current (A) 60/50HZNumber of handwheel revolutionsWeightSingle-phaseThree-phaseNmSmmW110V220V380V440VNKgOT-01010018/22Φ 20251.10/0.950.55/0.540.30/0.30N/A107.5OT-01515021/25Φ22401.65/1.670.88/0.840.31/0.310.30/0.31108OT-02020021/25Φ22401.67/1.670.89/0.850.31/0.310.30/0.311117.3OT-05050026/31Φ351203.60/3.621.55/1.580.59/0.590.58/0.5813.523OT-100100031/37Φ452004.10/4.102.15/2.200.85/0.850.79/0.7916.529OT-200200093/112Φ652004.10/4.102.15/2.200.85/0.850.79/0.7949.5753.2 Standard specificationsHousingWaterproof level IP67, NEMA 4 and 6Motor power supplyStandard: 220V AC single-phaseOptional: 110V AC single-phase, 380/440V AC three-phase, 50/60Hz,±10%24V DC /110V DC /220V DC"MotorSquirrel-cage asynchronous motorLimit switchOn/off, each of the 1 SPOT, 250V AC 10AAuxiliary limit switchOn/ off, each of the 1 SPOT, 250V AC 10ATorque switchOn I off, each of the 1 SPOT, 250V AC 1 OAQT-010 ExcludedTravel90°±10°0°~ 270°OptionalStall protection/ operating temperatureBuilt-in overheating protection, open 115oC ±5oC/off 97oC ±5oCIndicatorContinuous position indicator scaleManual operationMechanical clutch mechanism, with handwheel operationSelf-locking unitWorm gear, self-locking provided for the worm mechanismMechanical limitTwo external adjusting boltsDryer7-10W (110/220V AC)Wiring holeM20*1.5 M36*2Ambient temperature-20oC~+70oCLubricationAluminium-base grease (EP type)MaterialSteel/aluminum alloy/aluminum bronze/polycarbonateAmbient humidityMaximum 90% RH non-condensingSeismic performanceX Y Z 10g, 0.2~34 Hz, 30 MinutesOuter coatingDry powder/epoxy polyester, with a superior anti-corrosion function3.3 Optional specificationNo.Optional configurationRemarks1Explosion-proof actuator (Exd II CT4)QT series2Waterproof actuator (IP67,10M,250HR)QT series3Potentiometer (1K-10K)QT series4Proportional control unit (input/output signal4-20mA DC /1-5V/1-10V)QT series5On-site control unit (local control ON/STOP/OFF selection switch, local/remote switching)QT series6Travel 90°, 120° , 180°, 270°QT series7DC motor (24V DC)QT series8Additional torque switch (SPOT X2 250V AC 10A)QT-010 Excluded9Current position sensor ( output 4-20mA DC )QT series10The electric valve opens or closes the control cabinet automatically after the signal is cut offQT series11High-temperature-resistant actuator (-10oC ~+100oC)QT series12Low-temperature-resistant actuator (-40oC~+70oC )QT series13Low-speed actuatorQT seriesStructureThe electric actuator mainly consists of the following parts:Housing part: including housing and base;Driving part: powered by a high-performance fully-enclosed squirrel-cage motor;Transmission mechanism: double worm gear and clutch;Proportional control part: isolated from the mechanical part to improve reliability;Torque switch and limit switch part;Opening detection and feedback part.Installation of actuator6.1 Installation site6.1.1 Notes for indoor installationTo install it where there is any explosive gas, you need to order an explosion-proof actuator;To install it where it may be flooded or outdoors, please notify us in advance;Please reserve maintenance spaces for wiring, manual operation and others;6.1.2 Notes for outdoor installationIn order to avoid rain, direct sunlight and other problems, you need to mount a protective cover or select a protection class above IP67;Please reserve maintenance spaces for wiring, manual operation and others;6.1.3 Ambient temperatureThe ambient temperature range is from -20oC to + 70oC;When the ambient temperature is below 0oC, please mount a dehumidifying heater in the machine;6.1.4 Fluid temperature conditions: when it works with a valve, the fluid heat may be transmitted to its body whose temperature may rise; when the fluid is in a high-temperature sate, special treatment should be provided for the bracket connected to the valve.Standard bracket: bracket for a fluid temperature below +65oC or without bracket; Medium temperature bracket: bracket for a fluid temperature above + 100oC and below +180oC;High temperature bracket: bracket for a fluid temperature above + 180oC.6.2 Connection to the valveThe flange mounting hole size at the actuator bottom is in line with the standard ISOS211. If the valve's installing size is not in line with it, please design a bracket or adapter plate separately.6.2.2 The actuator is connected to the valve by a removable drive shaft sleeve on it. The drive shaft sleeve is provided as a solid piece, and you should first screw out two fastening screws counterclockwise with a wrench and then eject the driving shaft sleeve with two ejection screws.Note: The drive shaft sleeve can be designed and manufactured separately by users based on its function requirements, and it can be designed into round, square or other shapes for output (The concentricity of hole and outer circle must be ensured in processing).Detailed Photos Certifications Company Profile
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