Explosion-proof engines are used where there is a risk of explosion of gases or dust: oil and gas, chemistry, grain elevators, mines. Let's look at their types and features.
Why explosion protection is needed
In a conventional engine, sparking or heating can ignite an explosive atmosphere. Explosion-proof design eliminates this - either it does not release a spark outward, or it does not allow the surface to heat up to a dangerous temperature.
Main types of explosion protection
| Type | Principle |
|---|---|
| Explosion-proof shell (d) | The shell withstands an explosion inside without releasing flame |
| Increased protection (e) | Elimination of sparking and heating |
| Intrinsically safe circuit (i) | Energy limitation |
Ex marking indicates the type of protection, group and temperature class.
Where used
- Oil and gas industry.
- Chemical production.
- Grain elevators and flour mills (dust explosion protection).
- Mines and mining.
Repair features
Repair of explosion-proof engines is a responsible task: it is necessary to accurately maintain all protection parameters (shell clearances, seals). Violation of technology deprives the engine of the right to operate in an explosive zone. Rewinding and assembly are carried out strictly according to requirements. The protection status is checked by diagnostics.
Do you need to repair an explosion-proof engine in Tashkent while maintaining protection? Elektromotors engineers comply with all requirements - leave a request.