Eaton brake protection device for oilfield drilling
The invention provides an Eaton brake protection device for oilfield drilling, which is characterized in that the air inlet end of an electromagnetic pneumatic valve is connected with a control air path air source, an air relay comprises two air inlets and an air outlet, the air outlet end of the el...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention provides an Eaton brake protection device for oilfield drilling, which is characterized in that the air inlet end of an electromagnetic pneumatic valve is connected with a control air path air source, an air relay comprises two air inlets and an air outlet, the air outlet end of the electromagnetic pneumatic valve is connected with one of the air inlets of the air relay, and the other air inlet of the air relay is connected with a main air source; an air outlet of the relay is connected with the brake cylinder, the electric contact pressure gauge is connected with the cooling water pipeline, an outlet of the cooling water pipeline is connected with the brake cooling system, the electric contact pressure gauge, the intermediate relay KA1, the electromagnetic pneumatic valve and the 24V direct-current power supply form a series circuit, and a first normally open contact of the intermediate relay KA1 is connected with the electromagnetic pneumatic valve. The Eaton brake protection device for oil fi |
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