Coal safety mine explosion-proof switch type multi turn electric actuator

NegotiableUpdate on 12/22

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Nature of the Manufacturer: Producers

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Overview

The explosion-proof switch type multi turn electric actuator for coal safety mining is used for opening, closing, and regulating valves (equipped with a dedicated valve explosion-proof control box), and is a driving device for remote control, centralized control, and self-control of valves.

Product Details

1Coal safety mine explosion-proof switch type multi turn electric actuatorIntroduction

The ZB series explosion-proof multi turn valve electric device is mainly suitable for use with valves that perform linear motion of opening and closing components, such as gate valves, globe valves, diaphragm valves, gates, water gate valves, etc. It is used to open, close, and adjust valves (equipped with a dedicated valve explosion-proof control box), and is a driving device for valves to achieve remote control, centralized control, and self-control. It has the characteristics of comprehensive functionality, reliable performance, advanced control system, small size, light weight, and easy use and maintenance.

The performance of this product complies with the provisions of GB3836.1-2010 "Electrical Equipment for Explosive Gas Environments Part 1: General Requirements", GB3836.2-2010 (Electrical Equipment for Explosive Gas Environments Part 2: Explosion proof Type "d '"), GB3836.3-2010 "Electrical Equipment for Explosive Gas Environments Part 3: Increased Safety Type" e' (idt I EC 60079-7:1990) "and GB/T24922-2010" Technical Conditions for Explosion proof Valve Electric Devices ". This product has been verified by the National Explosion proof Electrical Product Quality Supervision and Inspection Testing Center and has obtained a full series of explosion-proof certificates, which can be widely used in most explosive gas environments.

Working principle and type

The ZB series electric device adopts an explosion-proof shell to separate the circuit parts that may generate sparks and arcs from the explosive gas mixture outside the shell, thereby achieving the purpose of explosion-proof. The parameters of the explosion-proof joint surface comply with the provisions of GB3836.2-2010, and the cable entry device complies with the provisions of GB3836.1-2010.

Explosion proof types are divided into mining explosion-proof type and ordinary explosion-proof type, with explosion-proof marks of "ExdlMb" and "Exd II BT4 Gb" respectively.

The cable entry device is of the compression nut and pressure plate type.

IICoal safety mine explosion-proof switch type multi turn electric actuatorExecution mechanism parameters

Specification Model	Rated three-phase voltage (V)	Output rated torque (N • m )	Z valve stem diameter (mm )	manual speed ratio	output speed (r/min )	Motor power (kW)	Output axis Z is large Number of rotations	Reference weight (kg )
ZB10	AC 380/660	100	28	32:1	24	0.25	150	50
ZB15	AC 380/660	150	28	32:1	24	0.37	150	50
ZB20	AC 380/660	200	40	32:1	18	0.37	150	53
ZB30	AC 380/660	300	40	32:1	18	0.55	150	53
ZB45	AC 380/660	450	48	25:1	24	1.1	150	85
ZB60	AC 380/660	600	48	25:1	24	1.5	150	95
ZB90	AC 380/660	900	60	25:1	24	2.2	150	112
ZB120	AC 380/660	1200	60	25:1	24	3	150	112

3、 Precautions for use

1. The installation form of this electric actuator has no principle requirements, but the recommended installation form is when the motor is in a horizontal state and the electrical box cover is in a horizontal or vertical upward state, which is beneficial for lubrication, debugging, maintenance, and manual operation;

2. During installation, the space required for maintenance and inspection personnel to disassemble each component should be ensured;

3. The axial clearance between the installation and valve connection teeth should not be less than 1-2mm;

4. When used for open stem valves, the extension of the valve stem should be checked to ensure that it matches the length of the valve stem sheath;

5. During installation, disassembly, and debugging, the sealing surface, sealing components, and explosion-proof surface of the explosion-proof electric actuator should not be damaged, and anti rust oil should be applied to the explosion-proof surface;

6. When disassembly is required, the manual handwheel should be rotated several times before proceeding with the valve slightly open;

7. Before installation, check whether the explosion-proof mark on the nameplate is consistent with the installation environment;

8. The grounding screw on the junction box must be reliably grounded with a grounding wire;

9. The strength of the connecting screws between the electric device and the valve should be grade 8.8;

10. When lifting electric devices, a reasonable lifting position should be selected to avoid falling, bumping, and other phenomena;

11. Open the junction box, use a wrench to unscrew the compression nut of the cable entry device, firmly connect the cable to the terminal block in the junction box, confirm that there are no errors, cover the junction box with the top cover, and tighten the fastening screw. The terminal connection should be secure, and the wire should be clamped with an elbow according to the method shown in Figure 10. The junction box has four entry devices, one for motor power cables and three for control cables. The power cables used must have grounding wires and be connected to the grounding terminals on the junction panel. The diameter specifications of the introduced cable are shown in Table 5. After connecting the wire, a tight sealing ring should be installed, and the Shore hardness of the sealing ring should be 45-55 degrees. Damaged or aged sealing rings should be replaced in a timely manner.