Liquid level height detection device, heat dissipation equipment and computing equipment

The utility model discloses a liquid level height detection device, heat dissipation equipment and computing equipment, and the liquid level height detection device comprises a buoy part which is arranged in a target container and moves along with the change of the liquid level height in the target container; the detection mechanism is provided with a plurality of detection contacts at intervals; the transmission mechanism comprises a transmission assembly and a conductive element connected to the transmission assembly, and the transmission assembly is used for driving the conductive element to move according to the movement of the buoy piece, so that the conductive element is connected with the at least one detection contact; the detection mechanism is used for outputting liquid level height information according to the connection state of the detection contact and the conductive element so as to determine the liquid level height in the target container according to the liquid level height information. There