9 results about "Gas insulation" patented technology

The invention provides a gas analyzer and a gas analysis method and belongs to the field of gas analysis. The gas analyzer has the advantages that a microflow half gas insulation chamber technology is adopted and measurement on to-be-detected gas is realized. The gas analyzer has main characteristics that one reference gas chamber and one measurement gas chamber are arranged in one cavity, and a microflow infrared gas detection device flowing front and back is adopted, so that the problems of large drift and poor measurement stability which are caused by adoption of a single gas chamber and the problem of complex structure due to adoption of an independent double-gas-chamber technology in the prior art are solved; besides, the microflow infrared gas detection device is provided with a water regulating device, and by finding the phenomenon that an absorption spectrum of vaporous water is overlaid with the absorption spectrum of the to-be-detected gas and utilizing difference in widths of absorption spectrums of the vaporous water and the to-be-detected gas on infrared lights, the water regulating valve is regulated, and variations of gases in front and rear gas chambers of the microflow infrared gas detection device and a water regulating buffer gas chamber after expansion are changed, so that a detected infrared spectrum is located in the absorption spectrum of the to-be-detected gas and is far away from the absorption spectrum of the vaporous water, and the problem of moisture disturbance is solved.

The invention provides an injection-product conveying mechanism with an exhaust gas shield. The injection-product conveying mechanism comprises an injection machine base, a fixed machine frame and a movable machine frame, wherein the fixed machine frame and the movable machine frame are arranged on the base; the fixed machine frame is provided with a left mold; a right mold is arranged on the movable machine frame, wherein the left mold and the right mold form a mold cavity; a demolding device is arranged on the left mold, and a mounting hole for fixing a finished plastic product is formed in the left mold; a rail is arranged at a lower position between the movable machine frame and the fixed machine frame, and extends out of the base; the rail comprises mounting bases which are respectively arranged on two sides of the rail, and conveying rollers arranged between the mounting bases; a transmission device is arranged in each mounting base; a collecting cover which extends to the upper position of the mold cavity is arranged at the top of the fixed machine frame; a fan is arranged at the top of the collecting cover, and communicates with an exhaust pipe; gas insulation curtains are respectively arranged on the front side of the collecting cover and the rear side of the collecting cover. The injection-product conveying mechanism disclosed by the invention can automatically receive and convey injection products, so that the situation that operators need to approach to the injection molds to fetch the injection products is avoided, and the hurt of smoke with particles to human bodies is avoided; besides, the labor strength of workers is reduced, and the working efficiency is improved.

The invention relates to a rapid verification method and device for a non-dismountable sulfur hexafluoride density relay. The device comprises first sulfur hexafluoride gas insulation equipment (1), second sulfur hexafluoride gas insulation equipment (5), a first gas sampling connector and valve (2), a second gas sampling connector and valve (6), a first density relay (3), a second density relay (7), a first density relay verification valve (4), a second density relay verification valve (8), a verification connector (9) and a rapid density relay verification platform (10). The device is advantaged in that the adjacent high-altitude sulfur hexafluoride density relays can be integrated on the platform arranged on the ground, climbing risk can be greatly reduced, all the density relays concentrated on the platform can be verified completely through a valve control method without dismounting the verification connectors, the time is substantially saved, and emission of sulfur hexafluoride gas having the greenhouse effect can be prevented.

The invention relates to an electric earthing switch (1) to connect a line conductor of a gas insulated substation to the earth, comprising: -a metallic housing having two separate compartments: one,filled with insulating gas, for the main switch and the other, separated from insulating gas, for its drive mechanism, and a flange; -an insulating plate (2) to be tightened between the flange of thehousing and a flange of a compartment enclosing the line; -a line contact (3a, 3b, 3c) carried by the insulating plate (2) and having an insert portion with a thread bolt passing through the insulating plate (2); -a fixed earth contact (8a) passing through the wall of the housing and having an outer and an inner portion relatively to the housing; -a sliding earth contact (9a) carried by the fixedearth contact (8a) to slide relatively to this fixed earth contact (8a); -a mechanism to actuate the sliding earth contact (9a) between an open position and a closed position; -the fixed earth contact(8a) extending perpendicular to the sliding direction (AX).

The invention discloses a sulfur hexafluoride decomposition product gas pressure monitoring device based on gas in-situ detection. The device comprises a gas circuit part, a detection part and a power supply part; the gas circuit part comprises a gas supplementing pipeline, a gas using pipeline, a testing pipeline, a reference pressure inflation valve, a reference pressure locking valve and a reference pressure cavity; the detection part comprises a differential pressure sensor, a differential pressure display meter, a pressure sensor and a reference pressure display meter; and the power supply part supplies power to the detection part. In a transformer substation field environment with violent temperature and humidity changes, the pressure of SF6 gas components can be continuously monitored for a long time under the condition that the operation state of SF6 gas insulation equipment is not interfered, so that a corresponding test basis is provided for perfecting an SF6 decomposition theory and a chemical diagnosis technology of electrical equipment.

The invention belongs to the technical field of insulation spacers, and discloses an insulation spacer for gas insulation electrical equipment. The insulation spacer comprises a first wire, one end of the first wire is fixedly connected with a connecting wire, and one end of the connecting wire is fixedly connected with a second wire. Through a movable mechanism, a spacer body can be completely clamped on the inner wall of a first flange, so that the spacer body can be completely squeezed towards the outer wall of the first flange by a clamping block through a rebound spring after working, and the space formed between the spacer body and the first flange and the space formed between the spacer body and the second flange are completely squeezed; meanwhile, due to the arrangement of a mounting groove and a sealing ring, the edge of the spacer body is sealed, a completely-closed space is formed, and a safer working environment can be provided for the first wire and the second wire in subsequent use; and when the spacer body is squeezed, the spacer body can be easily fixed on the inner wall of the first flange through the clamping block, so that the insulation spacer is convenient and labor-saving to use.

A medium or high voltage electrical device and method of maintaining the composition of an insulating gas mixture in a medium or high voltage electrical device, where the device comprises a sealed chamber, said sealed chamber comprising electrical components; a gas mixture ensuring electrical insulation and/or extinguishing of electrical arcs produced in this chamber, wherein the gas mixture comprises at least one insulating gas and at least one dilution gas; and a receptacle, said receptacle comprising an opening, at least one wall, wherein at least one wall is a heatable wall, and wherein said receptacle is positioned to receive liquefied gas; the device further comprising a heating element for heating the heatable receptacle wall; and a dielectrically and thermally insulating layer located between the heatable receptacle wall and the chamber.