Cementing equipment and control method

A method for controlling a cementing equipment, the cementing equipment comprising a centrifugal pump, a plunger pump, and a lubrication system, wherein:

• the lubrication system comprises:
• a lubricating oil pump, comprising a first channel, a first lubricating oil outlet communicated with the first channel, a second channel, and a second lubricating oil outlet communicated with the second channel, wherein a first pump head is arranged in the first channel, and a second pump head is arranged in the second channel;
• a first distribution valve, comprising a first inlet, at least one first outlet, and a third outlet, wherein the first inlet is respectively communicated with the at least one first outlet, the first outlet is communicated with a packing lubricating end of the centrifugal pump, and the first lubricating oil outlet is communicated with the first inlet;
• and
• a second distribution valve, comprising a second inlet and at least one second outlet, wherein the second inlet is respectively communicated with the at least one second outlet, the second outlet is communicated with a packing lubricating end of the plunger pump, and the second lubricating oil outlet is communicated with the second inlet, or
• the second lubricating oil outlet is communicated with the first inlet, and the second inlet is communicated with the third outlet;
• and
• the method comprises:
• detecting whether the centrifugal pump operates;
• controlling the first lubricating oil outlet of the lubricating oil pump to be open to provide the packing lubricating end of the centrifugal pump with lubricating oil when the centrifugal pump is in an operating state;
• detecting whether the plunger pump operates;
• and
• controlling the second lubricating oil outlet of the lubricating oil pump to be open to provide the packing lubricating end of the plunger pump with lubricating oil when the plunger pump is in an operating state.