Explosion-proof controller SXC-FB

author: xiechang editor: xiechang source: xiechang time: 2019-04-15 10:28:47
Abstract:
First, the design concept of SXC-FB explosion-proof computer pulse controller With the development of China& 39;
First, the design concept of SXC-FB explosion-proof computer pulse controller
 
       With the development of China's environmental protection industry, the cleaning system is also often used in many explosive gas dust environments. There are some easy to exist in many industrial production in China.
Explosive dust and gas. For example, there are about 2/3 of the underground coal mines with explosive substances; about 80% of the chemical industry has explosives in the production workshop area.
quality. SXC-FB explosion-proof computer pulse controller (hereinafter referred to as explosion-proof controller) is a new product designed for dangerous explosion fields. Explosion-proof controller is also through
A parameter that sets the pulse width (pulse width), pulse interval (interval), cycle period (cycle), etc. to implement timing/constant pressure cleaning.
       From the development of pulse controllers at home and abroad: For pulse gas controllers for explosive gas dust environments, some companies in Europe and Japan have already opened.
Related products have been issued; in China, although there are relatively many enterprises producing pulse control instruments, they are not involved in the field of explosion protection. Our company is the first in China.
 
 
Second, the explosion-proof control instrument model and the meaning of the explosion-proof mark

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Third, the principle of explosion protection
        Explosion-proof control instrument mainly uses the outer casing to achieve the purpose of explosion-proof.
        Flameproof enclosure: An explosion-proof version of electrical equipment whose enclosure can penetrate the flammable mixture inside the enclosure through any joint or structural gap of the enclosure.
The explosion is not damaged and does not cause ignition of an explosive environment externally formed by one or more gases or vapors.
       Note: This standard complies with the relevant provisions of National GB3836.2-2000 "Electrical Equipment for Explosive Gas Environments Part 2: Flameproof Type "d"".
 
 
Fourth, the structure description
        The explosion-proof control instrument is mainly composed of an explosion-proof casing and three explosion-proof cable introduction devices. The casing is made of Q235, and the control circuit board, switching power supply and rotation are inside the casing.
Change the switch, etc.
 

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A, tempered glass:
        In order to achieve the purpose of explosion-proof, the display part is made of tempered glass, and the thickness of the tempered glass is 10 mm or more. In order to facilitate loading and unloading, during processing, we divide the display panel into two parts, and the welded panel adopts all-welding to ensure the firmness of the tempered glass. The tempered glass is surrounded by epoxy resin to ensure the sealing performance of the outer casing.
 
 
B, explosion-proof shell:
        The outer casing is made of Q235 material. The thickness of the explosion-proof casing is not less than 5mm. The edge of the casing is flanged. The width of the flange is 35mm and the thickness is 10mm. The ambient temperature of the explosive gas is -20 °C ~ +60 °C, and the ambient temperature of the electrical equipment is -20 °C ~ +40 °C.
 
 
C, explosion-proof cable introduction device:

        The device can compress the cable to prevent the cable from being pulled or twisted from the introduction device. The device is marked with an "Ex" mark
indicating that the device has been individually tested and certified, but no additional certificates should be issued when installing the device housing.

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Fifth, the main technical parameters

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Parameter explanation
Pulse width: The pulse controller outputs one bit of driving voltage each time, and the driving voltage duration is called pulse width, which is called pulse width;
Pulse interval: the interval between adjacent two output drive voltages is called pulse interval, referred to as interval;
Cycle period: The time required for the controller to complete the drive output of all the solenoid valves is one cycle, and the pause time between the two cycles is called the cycle cycle.
Referred to as a cycle.
 
Sixth, parameter setting operation steps
 
 
       1. After the explosion-proof control device is connected to the power supply, the switch of the lower casing of the explosion-proof enclosure is turned to the "on" position, and the digital tube display starts from "1". Factory setting
 
At the timing.
 
 
       2. Set the pulse width (pulse width), pulse interval (interval), cycle period (cycle), and turn the switch of the lower casing of the explosion-proof housing to the "on" position.
The transfer switch of the housing is in the "adjustment" position;
      (1) At this time, the “Pulse Width” parameter (pulse width) is displayed, and the pulse width indicator is on. Press the ‘+’ or ‘_’ button on the mask to set the desired number (factory setting is 0.08 seconds);
      (2) Press the “Time Adjustment” button. At this time, the “Interval” parameter (pulse interval) is displayed. The interval indicator lights up. Press the '+' or '_' button on the mask to set the desired number (factory setting is 10 seconds);
      (3) Press the “Time Adjustment” button. At this time, the “Cycle” parameter (cycle period) is displayed. The period indicator lights up. Press the '+' or '_' button on the mask to set the desired number (factory setting is 0 marks);
      (4) Press the “time adjustment” button, the “loop” selection is displayed at this time, no indicator light is on, press the '+' or '_' button on the mask to set the required number (if the customer has no special requirements, the factory The setting is generally set to 40).
 
 
3. After setting the time parameters, turn the combination switch of the upper casing to the “running” position. At this time, the explosion-proof controller runs according to the time parameters that have been set.

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