Switch tool for cylinder valve of high pressure gas cylinder

Abstract

The invention discloses a switch tool for a cylinder valve of a high pressure gas cylinder, and relates to the technical field of special mechanical tools for the power industry. The switch tool for the cylinder valve of the high pressure gas cylinder comprises a V-shaped frame, a hand wheel, an adjusting rotary knob provided with a thread and a movable jaw provided with a rack. A triangular clamping buckle structure is formed through a first fixing jaw, a second fixing jaw on the V-shaped frame and the movable jaw. The clamping buckle structure is matched with the cylinder valve of the high pressure gas cylinder, and opening or closing of the cylinder valve of the high pressure gas cylinder is achieved by rotating the hand wheel. The adjusting rotary knob provided with the thread is engaged with the movable jaw provided with the rack through the thread and the rack, the distances between the movable jaw provided with the rack and the first fixing jaw as well as between the movable jawprovided with the rack and the second fixing jaw can be adjusted by rotating the adjusting rotary knob provided with the thread so as to adapt to the cylinder valves of the high pressure gas cylinders with different sizes, and the application range is wider. The switch tool for the cylinder valve of the high pressure gas cylinder is simple in structure, convenient to carry and low in cost, and has high practical value.

Description

technical field [0001] The invention belongs to the technical field of special mechanical tools for the electric power industry, and in particular relates to a switch tool for a valve of a high-pressure gas cylinder. Background technique [0002] At present, more and more SF6 electrical equipment is used in the power industry, mainly reflected in: SF6 transformers, SF6 voltage transformers, SF6 current transformers, etc. For this type of SF6 electrical equipment, the "Electrical Equipment Maintenance and Test Regulations" stipulates that such equipment should be tested before it is put into operation, and it should be tested one year after it is put into operation. If there is no abnormality, it should be tested every three years. When testing this type of equipment, it is necessary to use SF6 pure gas to calibrate the test equipment, while SF6 pure gas is contained in a high-pressure gas cylinder, and this type of high-pressure gas cylinder acts as a switch through a valve ...

AI Technical Summary

Problems solved by technology

Usually, the N2 used to calibrate the instrument and the N2 used in the chromatographic test require the absolute purity of the gas, otherwise the test data will be abnormal and the health status of the equipment cannot be judged; and the purity of the standard gas used for the transformer oil chromatographic test requires higher

Therefore, when the test or maintenance personnel use this type of high-pressure gas cylinder, they will try their best to tighten it, which will cause more effort to be unscrewed when they are used next time.

Images