The container for compressed gas
(57) Abstract:The container is designed to store, transport and use of compressed gases. The tank is made of welded titanium alloy. The maximum radii of curvature of the outer surfaces of the bottom (Rdand neck (Rg), as well as the thickness of the bottom (dand neck (g) correlated with the radius of the outer surface of the cylinder (RC) and thickness (C) as follows: Rd/RC=1-1,5, Rg/RC=1-1,5,d/C= of 0.45 to 0.75,g/C= of 0.45 to 0.75. This increases the durability and reliability of the design cylinder. 1 Il. The invention relates to the construction of vessels under high pressure, in particular for high-pressure cylinders designed for storage, transportation and use of compressed gases (air, argon, nitrogen and others ). Cylinders for compressed gases under high pressure are devices used in various fields of national economy and technology and, in particular, may find use in breathing apparatus and scuba gear.The main requirements for such gas tanks are:
operational reliability when mini is compared to the environment and stored in gas cylinders;
- low power consumption.Design of domestic cylinders is determined by the standard (for example, GOST standard 949-73 and others) and represents the pipe with rolled bottom and neck, and the bottom is sealed by welding. The thickness of the wall to the top of the bottom cap increases smoothly up to 3-4 wall thickness of the pipe.Tanks of this design adopted for analogue produced, for example, Pervouralsk metallurgical plant.However, existing designs of gas cylinders do not provide sufficient operational reliability (durability and long service life due to certain design features.The least reliable element of the design of such cylinders (according to GOST standard 949-73) is the area of the sealing of the bottom by welding. The sealing area of the bottom of the weld is characterized by the presence of welding defects, subject to significant corrosion and reduces the service life of the cylinders.Manufacturing technology standard cylinders does not allow to obtain the optimal shape and the ratio of the radii and thicknesses of the cylindrical part, the bottom and the neckline.Optimum strength characteristics of the cylinders at their minimum ve the hemisphere, bottom and neck and the wall thickness of the bottom and the neckline, approximately one-half the wall thickness of the cylindrical part, which is not considered in the design of the cylinders and leads to reduction of operational reliability and increase weight characteristics.Considering aluminum cylinders, also has been similar, patented in France (N2221685, 1974, b. N 46) and the UK (N 1419317, 1975) reported the same drawback, namely nonoptimality of the form cylinders and the ratio of the radii and thicknesses of the cylindrical body, the bottom and the neckline.Common features offered by the authors of the cylinder is the presence of a cylindrical body with a bottom and a mouth.The best design is the design of compressed gas cylinders firm "Faber", (Italy), adopted for the prototype (Grigoriev, U. and other Gas powered vehicles. -M.: Mashinostroenie, 1989, S. 100-102).The container is a steel stamped from a sheet of a cylindrical body with a solid bottom and sakatani neck. The thickness of the cylinder walls and a solid bottom the same. In this design there is no effect sealing of the bottom by welding, but nevertheless not the optimal shape and the ratio of the thickness of the cylinder walls, bottom and neckline.T is a cylinder with a high degree of operational reliability with minimum weight and increased the number of stored gas.The invention consists in that the cylinder of compressed gas, having the form of a cylinder with a convex bottom and neck unlike the prototype is made of welded titanium alloy, and the maximum radii of curvature of the outer surfaces of the bottom Rdand the neckline Rgand the thickness of the bottomdand neckgcorrelated with the radius of the outer surface of the cylinder RCand thicknessCas follows:
d/C= 0,45 0,75...,
g/C= 0,45 0,75....Welds can be treated from the inside flush with the surface of the cylinder.The choice of thickness of the bottom of the neck relative to the cylindrical part within the specified limits, as well as the selection of the appropriate radii of the cylinder, the bottom and the neckline leads to practical ravnopravnosti cylinder, bottom and neckline, to reduce weight and material of the proposed tank.Perform a cylinder made of titanium alloy makes it corrosion resistant in relation to the environment, even in sea water, and clean the part of the stored gas, which favors the use of cylinders as breathing apparatus the and Japan N1-26065, 1987, F 16 J 12/00.Despite the popularity of using titanium as a corrosion-resistant material, use it in combination with the proposed selected ratios of the thicknesses and radii of the bottom cap and the cylindrical part of the cylinder is manufactured by welding, allowed to obtain a new technical result: balanceddesigns that affects the duration of use of the container under pressure, the increase in the number stored in the gas cylinder, the weight reduction in comparison with other designs of appropriate dimensions and reduced material design, as well as the ability to use for the storage of environmentally friendly gases.If the violation is selected ratios suggested above, the technical result is not achieved.The presence of the distinctive features of the prototype signs according to the criterion of novelty of the design of the proposed tank.In support of the criterion of industrial applicability can be seen the design of the cylinder in the drawing, 1 is a cylindrical part, 2 - bottom, 3 - neck, Rd, RC, Rgthe radii of curvature of the outer surfaces of the bottom of the cylinder and cap, d,C,g- thickness CTE the intake connection) or 2 (stamped cylindrical part with a bottom and a cylindrical part of the neck).According to the invention was developed the design documentation, which were prototypes of the cylinders with the proposed ratios.Tests confirmed high strength, weight and performance characteristics of the cylinders.As the test showed, in high-strength titanium cylinders increased 1.3 times the amount of stored gas in comparison with the prototype of similar size. 1. A cylinder of compressed gas, having the form of a cylinder with a convex bottom and a neck made of titanium alloy, characterized in that the container is made of welded, and the maximum radii of curvature of the outer surfaces of the bottom (Rdand neck (Rg), as well as the thickness of the bottom (dand neck (g) correlated with the radius of the outer surface of the cylinder (RC) and thickness (C) as follows: Rd/RC= 1 - 1,5, Rg/RC= 1 - 1,5,d/C= of 0.45 to 0.75,g/C= of 0.45 to 0.75.2. The cylinder p. 1, characterized in that the welds are machined flush with the inside surface of the cylinder.
FIELD: pressure vessels for storing highly inflammable fluids.
SUBSTANCE: member has double-walled shell. The internal wall of the shell is made of a thin-sheet material. The outer wall is made of a thick-sheet material. The space between the walls is filled with a gas, e.g. inert gas. The space receives pressure gauge, temperature sensor, pickup for determining chemical composition, which transmit signals to the central block for monitoring the storing process.
EFFECT: expanded functional capabilities.
FIELD: mechanical engineering.
SUBSTANCE: vessel has plastic shell, flanges mounted in the pole openings in the shell, and lid set in one of the pole flanges. The lid is concave inward and bears on the inner side of the pole flange. The butt between the pole flange and lid is made to provide the radius of the circumference formed by intersection of the middle surface of the lid and surface of the bearing part of the flange to be larger than that of the pole opening in the plastic shell. The thickness of the pole flange should be at least 1.5-2 mm, which is sufficient for the formation of the plastic shell. The loading acts on the developed bearing surface of the lid which is mating to the inner surface of the pole flange.
EFFECT: decreased weight of vessel.
2 cl, 5 dwg
FIELD: testing of bodies, gates, valves, check-up of the reliability of the test of serviceability of high-pressure vessels, reveal of hidden operating defects of the body.
SUBSTANCE: the method of testing of high-pressure vessels with transportation of the vessel from one station on the other car includes the following operations. Adapters and valves are dismantled, inner surface is examined, hydraulic tests are carried out, the vessel is dried up, adapters and valves are assembled, hydraulic tests are carried out, the vessel is dried up, adapters and valves are assembled, pneumatic tests are carried out. The above operations are realized on equipped stations. Transportation and realization of the above operations is effected at a permanent fixation of the vessel on the same car. The car has a frame with wheels, bracket, bed, handles, fastener. The frame is provided with two pairs of wheels, supporting rod is introduced in it, it is rigidly coupled with the bed and located perpendicularly to the longitudinal axis.
EFFECT: improved convenience of servicing and expanded functional potentialities.
6 cl, 8 dwg
FIELD: gas-and-oil producing industry; natural gas industry; mechanical engineering; production and usage of the high-pressure cylinders.
SUBSTANCE: the invention is pertaining to the field of gas-and-oil producing industry, natural gas industry, mechanical engineering, in particular, to production and usage of the high-pressure cylinders. The high-pressure cylinders are intended for storage of liquids and gases. The high-pressure cylinder consists of a pressure sealing shell and an external load-bearing element. At that the pressure sealing shell is made out of the components connected to each other by a non-detachable connection and the field of the non-detachable connection of components of the pressure sealing shell is reinforced with an additional component. At that the additional component height H and length L are bound by the following ratio: L = H/tgα; where α is the angle of friction of the load-bearing component material on the additional component material. The technical result is an increased reliability of the high-pressure cylinder.
EFFECT: the invention ensures an increased reliability of the high-pressure cylinder.
6 cl, 2 dwg
FIELD: mechanical engineering.
SUBSTANCE: pressure vessel comprises metallic flanges mounted in its pole ports. The bearing surface of the shank of the metallic flange is made of two sections. The first section is conical and located at the base of the metallic flange, and the second section is convex and is located at the top of the flange. The length of the generatrix of the cone is no less than the width of the reinforcing belt made of cords and threads plus the shift of the plastic due to its deformation.
EFFECT: reduced sizes and enhanced reliability.
FIELD: gas-charging trucks for transportation and storage of gas.
SUBSTANCE: proposed high-pressure vessel has cylindrical shell with cylindrical bores at the ends where gates are mounted up to the stop; these gates are made in form of covers with seals; vessel is also provided with locking members engageable with cover and shell; it is additionally provided with hold-down member; generatrix surface of covers is stepped in shape; seal is made in form of stack of elastic rings and protective washers; it is located on stage of lesser diameter between stage of larger diameter and hold-down ring member engageable with locking member.
EFFECT: reduced labor requirements in manufacture and assembly; reduced usage of metal.
6 cl, 5 dwg
FIELD: devices functioning under high pressure.
SUBSTANCE: proposed high-pressure vessel has body, bottoms, internal sealing shell, transversal and longitudinal force-bearing members, and jointing members. Transversal force-bearing members of body and bottoms are made of plates provided with coordinate holes and assembled through layer-by-layer shifted joint into stacks in the form of closed loops. Longitudinal force-bearing members are made in the form of rods mounted in through channels formed by coordinate holes to brace abutting stacks of body and bottoms together. Stepped transition points between stacks are filled with shaped split inserts furnished with fastening seats and joined together with stacks by means of rods.
EFFECT: enhanced reliability and facilitated assembly of vessel.
2 cl, 3 dwg
FIELD: high-pressure tanks.
SUBSTANCE: tank comprises hemispherical bottom and is provided with load-bearing shell having seal. The load-bearing shell is made of flexible layer, protective corrosion-protective and sealing layer, and is provided with pole opening. The corrosion-protective and sealing layer of the bottom is made of steel and bronze spirals with a ratio of 2:1 pressed one to the other and to fluoroplastic material whose outer side is additionally pressed to the reinforcing braid made of bronze spirals.
EFFECT: enhanced safety.
FIELD: machine building.
SUBSTANCE: pressure vessel contains solid-metal envelope implemented from tubular billet from thermally non hardenable aluminium-magnesium alloy, selected from the group: AMg2, AMg2.5, AMg3, AMg3.5, AMg4, AMg4.5, AMg5, AMg6 or its analog, hardening of which is implemented at loading of vessel by test pressure. In other version of implementation of pressure vessel contains external load-bearing envelope from composite material and solid-metal envelope. Manufacturing method of pressure vessel includes manufacturing of solid-metal envelope by method of flanging of at least one end section of tubular billet from thermally non hardenable aluminium-magnesium alloy.
EFFECT: usage of invention will provide simplification and price reduction of vessels' fabrication method.
36 cl, 2 dwg, 1 tbl
FIELD: mechanical engineering.
SUBSTANCE: invention refers to packed structure of high pressure reservoir. The structure consists of a tubular case with a bottom and an open end, and of a cover covering the open end. Inserted one into another circular shape slots and lugs of the packed structure are formed on internal and external sides of adjacent surfaces of the open end of the reservoir case and cover. A vent opening is formed between the internal and external lug. In the cover there is made an opening for air supply, particularly for inert gas supply into the vent opening. Adjacent surfaces on internal side of the internal slot and internal lug contact with their metal. Packing gaskets are maintained between the slots and lugs.
EFFECT: invention facilitates reliability of packing.
4 cl, 4 dwg