(57) Abstract:The invention relates to welding equipment, namely, to safety devices for protection against infiltration blast kick back flame. The invention allows to reduce the moisture in the exhaust tract. The hydraulic contains the first chamber, the top of which is a gas-feeding nozzle, a second chamber in the upper part of which is the exhaust pipe, and a third chamber located between the first and second and associated gas from the second chamber. All three chambers are communicated with each other on the water. 2 Il. The invention relates to welding equipment, namely to the safety devices to protect the generators from infiltration blast kick back the flames.Known water lock , consisting of a chamber partially filled with water, and a gas-feeding tube, through which the gas enters the water, and the water enters the upper part of the chamber and through the exhaust pipe is diverted to the burner or torch. The disadvantage of this shutter is the need for continuous monitoring of the water level in the shutter, because after cessation rabotaetsa in the gas generator.Known as a water gate , comprising a housing partially filled with water, a gas-feeding and exhaust pipes. To prevent overflow of water from the water seal in the gas generator breech provided with a check valve. The disadvantage of this device is the design complexity.The closest in technical essence is a hydraulic lock, containing two chambers, connected by water, with a gas-feeding nozzle is located in the upper part of the first chamber and the suction in the upper part of the second . The disadvantage of this device is that in the process gas passing through the second chamber of the trap, entrain particles of moisture which can lead to poor weld and flame out.The task of the invention is to reduce the moisture in the exhaust gas tract.The task is solved in that the hydraulic containing two cameras, connected to water, gas-feeding nozzle, located in the upper part of the first chamber, and exhaust nozzle located in the upper part of the second chamber, added a third chamber located between the first and second soamsawali with them on the water and the amount of moisture in the gas, because almost all of the gas barbthroat through the water a third chamber, then through the hole connecting the third and second chambers for gas, is supplied into the second chamber, where the water on the walls of the chamber flows down, and the gas flows in the exhaust tract.In Fig. 1 presents the proposed scheme of the hydraulic valve when operating the gas generator of Fig. 2 - scheme of the shutter during the reverse stroke of the flame or when the pressure drop in the gas generator relative to the external environment.The hydraulic contains three chambers 1, 2 and 3, in the upper part of the chamber 1 is a gas-feeding pipe 4 and in the upper part of the second chamber - exhaust pipe 5. Camera reported on the water through the holes 6 and 7, located at the bottom of the camera. Cameras 2 and 3 are interconnected at the upper part of the through hole 8.In the General case, the device may have a different design, for example, the camera may be located coaxially.The device operates as follows.After activation of the gas generator pressure in its volume due to the generated gas increases with increasing pressure gas through the pipe 4 into the chamber 1, forcing the water through the Windows of the battle not only in the lower part of the chambers on the water through the hole 7, but in the upper part of the through hole 8. The water level in the chamber 3 is substantially higher than in the chamber 2 due to the large gas saturating. Gas through the opening 6 into the chamber 3 and passing through the water accumulates in the upper part thereof and thence through the opening 8 into the chamber 2 and further through the gas exhaust pipe 5 through the hose to the burner. Passes through the chamber 3, the gas entrain water droplets, which on the inner surface of the walls of the chamber 2 flows down, not into the exhaust system, so the humidity of the gas is reduced and its quality is greatly improved. Part of the gas in the upper part of the chamber 2 passes through the hole 7, barbotine through the water in the same camera, but the quantity of this gas is small, bubbling water is not observed, and she is not fond of gas in the exhaust path followed by the gas (Fig. 1).After termination of the gas temperature in the gas generator is reduced and, therefore, falls and pressure. When the pressure inside the gas generator becomes lower than the pressure of the external environment (below atmospheric), water from cameras 3 and 2 through holes 6 and 7 into the chamber 1. Excess water formed in the trap due to entrainment of water vapor and droplets of water gas from getgenerator the gas generator and the external environment occurs due to the inflow of air through the pipe 4, holes 6, 7, 8 and the pipe 5, while the air barbthroat through the water in the chamber 1 (Fig. 2).During the reverse stroke the flames of the gas in the chambers 2 and 3 is ignited, the pressure on the water, pushing it into the chamber 1, with hydraulic lock between the camera 1 and camera 3 is not destroyed and prevents the penetration of flame into the chamber 1 and the gas generator.When turning on the generator the amount of water in the trap is always constant, and a slightly larger volume of chamber 1. The present invention allows not only to monitor the presence of water in the trap, but not to control its maximum level, because every time the power of the gas generator, the amount of water in the gas generator is automatically set to an optimum, predetermined volume 1 and level holes 6 and 7, which reduces the probability of entrainment gas water in the exhaust path of the rising water level in the trap. The presence of a third camera allows one device to combine the functions of the trap and of the air, to catch the water, flowing a gas, resulting in exhaust tract goes almost dry gas.The sources of information.1. Reference welder. Edited by centuries Stepanova. - M: The Machine. - M.: Mashinostroenie, 1986, page 303.3. Evidence of the Russian Federation N 3443 utility model, C 10 H 21/12, 1995 (prototype). The hydraulic containing two cameras, connected to water, gas-feeding nozzle, located in the upper part of the first chamber, and exhaust nozzle located in the upper part of the second chamber, characterized in that it introduced a third chamber located between the first and second soamsawali with them on the water and associated gas from the second chamber.
FIELD: oil and gas industry.
SUBSTANCE: group of inventions relates to mining industry and can be used at drilling and completing of wells. An insulating device for a formation fracturing plug includes a ball seat equipped with a mounting surface and a ball having a possibility of contacting to the mounting surface. The mounting surface profile is dome-shaped; the first portion of the profile has a curvature radius that corresponds to the curvature radius of the ball profile, and the second portion has a curvature radius that is larger than that of the first portion. Besides, the invention describes a fracturing plug and an insulation method of zones of a productive formation using an insulating device.
EFFECT: improvement of tightness of an insulating device.
11 cl, 49 dwg