65results about How to "Safe working condition" patented technology

The invention relates to a vessel having an elongated shape, and being moored to the sea bed in a substantially fixed orientation. The vessel comprises at least along its longitudinal sides, near keel level, two transverse skirts having such a width that the natural roll period of the vessel is above a predetermined period, the natural roll period of the vessel without the skirts being below said predetermined period.

The invention discloses a heat pump drying device and an application method thereof. The heat pump drying device comprises a heat pump circulation subsystem and a drying circulation subsystem. A compressor, a heat adjustment device, a condenser, a throttling component, an evaporator and a precooling heat exchanger are connected through a pipeline, so that the heat pump circulation subsystem is formed. The drying circulation subsystem comprises a drying chamber, an air channel and a drying fan. The drying fan, the precooling heat exchanger, the evaporator and the condenser are mounted in the air channel, or air inlets of the drying fan, the precooling heat exchanger, the evaporator and the condenser and air outlets of the drying fan, the precooling heat exchanger, the evaporator and the condenser are connected with a front air channel body and a rear air channel body correspondingly. The drying chamber or the air channel body adjacent to the drying chamber is internally provided with atemperature sensor and a humidity sensor. By means of the heat pump drying device and the application method thereof, the problems that existing drying devices are small in function number, small in drying application scope, high in energy consumption, loss and emission and the like are solved; functional diversity and high efficiency of a drying system are achieved; the application scope is widened; damage of dried objects and emission of exhaust gas are reduced; and flexibility and reliability of the heat pump system are improved.

The invention discloses a building cutting machine capable of conducting conversion cutting on the wall surface and the ground. The building cutting machine comprises a main handle and a protection shell. A cutting blade is mounted on the inner side of the protection shell, and the outer side of the protection shell is provided with a scale line, a positioning plate and sliding grooves; the positioning plate is arranged on the sliding grooves, and the scale line is arranged in the middle of the positioning plate; a water-spraying electromagnetic valve is fixed to the upper side of the protection shell, and the outer side of the water-spraying electromagnetic valve is connected with a water-guiding hose; and a main moving rod and an auxiliary moving rod are connected through a connecting bottom plate, and fastening bolts are mounted on the connecting bottom plate. According to the building cutting machine capable of conducting conversion cutting on the wall surface and the ground, corresponding adjusting work can be conducted on different working faces of a building, and accordingly, cutting work on the different working faces of the building is completed; and the size of cutting work can further be controlled effectively in the cutting process, and thus the cutting work error of the device is reduced effectively.

The invention relates to a strong and weak current comprehensive distribution box. The strong power distribution room and the weak power distribution room which are isolated from each other are arranged in the cavity of the box body. The box door is composed of an isolated inner door and a visible outer door. Mirror frame type, the left and right vertical frame plates and the upper and lower vertical frame plates of the box shell assembly are provided with knock-out holes for incoming and outgoing lines, the rear floor of the strong power distribution room is equipped with installation guide rails for strong power distribution facilities, and the rear floor of the weak power distribution room is set There are installation brackets for multimedia signal modules, and there are extension holes for operating functional parts of power distribution facilities on the door of the strong power distribution room. The incoming and outgoing lines of all power distribution facilities enter and exit through the knock-out holes, and can be monitored through the door The indoor setting content and working conditions are reasonable and scientific in structure, integrating strong and weak power distribution functions, which is convenient for the setting of multimedia weak current supporting facilities and the reasonable layout of signal lines, which is conducive to standardizing outdoor incoming lines and indoor wiring, and improving indoor The overall decoration effect effectively overcomes the messy wiring of weak current facilities or the arrangement of multiple boxes in the prior art, which is not coordinated with the interior decoration, and has strong practicability and market application prospects.

The present invention proposes an equivalent adjustment circuit for gate drive resistance of an IGBT module, comprising an IGBT module, an MCU, a first optocoupler and a drive module, a first resistor is connected between the MCU and the first optocoupler, and the drive module and the IGBT module A gate drive resistor is connected between them, and there is an integral circuit between the first optocoupler and the drive module. The integral circuit includes the equivalent resistance of the integral circuit and the first capacitor. By changing the resistance value of the equivalent resistance of the integral circuit, the integral circuit can be adjusted The time constant of the gate drive resistor can be adjusted equivalently. The equivalent adjustment circuit of the gate drive resistance of the IGBT module of the present invention can adjust the equivalent resistance of the gate drive resistance, and can drive IGBT modules with different powers without manually changing the gate drive resistance, thereby optimizing the working state of the IGBT modules.