RU24868U1 - LPG STORAGE AND TRANSPORTATION CYLINDER - Google Patents

Description

CYLINDER STORAGE AND TRANSPORT CYLINDER

The utility model relates to the field of mechanical engineering, in particular, to vessels operating under pressure and used in the automotive industry, and can be used mainly in cars, the spare wheel for which is located in the niche of the trunk of the car in a horizontal flat gi.

Known teh11ICH9skoe solution "Pressure vessel according to ed. testimonial. USSR No. 850972, MKI F17C SHO, declared 12.10.79, publ. 07/30/81, Bull. No. 28. The pressure vessel contains a shell, the wall of which is formed by the external and internal toroidal surfaces. These toroidal surfaces are eccentric relative to each other, thus forming a wall of variable thickness. The smallest wall thickness is located on the outer radius of the torus, most) Shaya - on the inner radius. The ratio of the largest and smallest thicknesses of the torus shell is obtained from the condition of equal stresses on the outer and inner radius of the torus shell, loaded with internal pressure.

However, this technical solution does not take into account possible external mechanical effects during operation. Therefore, the wall of the torus of smaller thickness is more susceptible to deformation under external mechanical stresses arising during the transportation of pressure vessels. In addition, the technological implementation of this vessel is very difficult due to the need to make walls of variable thickness, as this requires special equipment, devices that allow you to control the wall thickness in accordance with the stresses on the outer and inner radii of the torus shell.

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GAS.

The closest claimed technical solution is “A gas storage device according to the patent of the Russian Federation No. 2149306, claimed September 25, 1996, published May 20, 2000, the applicant DZE SECRETARY OF STATE FOR DEFENSE (GB).

This device is designed to store and supply gas. It consists of a gas cylinder capable of containing gas under high pressure, equipped with a gas supply opening, supply means connected to a gas supply opening at the first end to provide gas supply through the second end, and means for controlling the feed rate g% for. The gas reservoir is a toroidal pressure vessel containing a metal toroidal housing. A layer of high tensile polymer fiber is wound on the surface of the casing, the fiber being oriented essentially in the meridion. 11th direction and free from any matrix material, at least over a significant part of the winding depth. The gas supply hole is located on the inside of the torus and includes means for making a detachable connection of the supply means and a valve to prevent gas leakage during disconnection; this means of supply. The housing has a torus shape of a substantially circular cross section in the meridional direction and with a substantially uniform wall thickness, and is made of a material selected from their group consisting of aluminum and its alloys, titanium and its alloys. The polymer voloia contains aramid and is a mixture of fibers containing an aramid fiber in combination with at least one of carbon, glass or ceramic fibers. Winding preload fiber with a force providing preliminary compression stress of the metal casing. The housing has a thickened area free from winding near the gas supply opening. The feed control means includes a pressure regulator. Gas storage device

It is contained in the bag and has a means for fixing it on the back of a person to simplify transportability.

The disadvantages of this technical solution is also the complexity of the manufacturing process of the container, the need for casting equipment, which entails a deterioration in the environmental parameters of the environment. In addition, in the manufacture of this balloon, reinforcing fiber was wound on the outer surface of the toroidal reservoir, which also complicates the manufacturing technology: an increase in the number of operations, the need for additional equipment for winding.

The use of technical solutions described in the analogue and prototype as a reservoir for the fuel of cars is impractical due to complex technological processes, complexity of construction and, as a result, increased cost of products.

The tasks solved by the claimed technical solution are: simplification of the design and, as a consequence, the manufacturing technology of a cylinder for storing and transporting liquefied gas, making it possible to use it as a tank for fuel of cars with a niche in the trunk for a spare wheel mounted horizontally, and also improvement of environmental parameters of production.

The tasks are solved by the fact that in a lime gas storage and transportation cylinder containing a reservoir capable of containing gas under pressure, provided with a gas supply opening, a supply means and a shut-off valve connected to the opening, the reservoir being a toroidal pressure vessel including metal toroidal casing, and a gas supply hole located on the inside of the torus, the toroidal casing, made welded, consists of three main parts - the shell, the bottom and identical the bottom of the upper part, while the shell is installed between the bottom and the top

part of the casing and forms the inner side of the toroidal casing, the cross section of which in the transverse section in the meridional plane is made close to the square with rounded corners, and the shell zones adjacent to the bottom and upper part of the casing are made rounded with the extension to the zones of their contact with the parts of the casing.

The tasks set are also solved by the fact that it is made of metal selected from the group of iron and its alloys; the feed hole is made in the shell and is equipped with a nozzle located on its inner surface and equipped with fastening means for supplying it in the internal volume of the housing; a device for level control, filling the cylinder with liquefied gas, made in the form of a float, and the gas supply means are made in the form multivalve.

Distinctive essential features of a utility model are:

-performance of a toroidal casing consisting of three parts of the shell, bottom and identical to the bottom of the upper part;

-the shell is installed between the bottom and the upper part of the body and forms the inner side of the toroidal body;

- the cross-section of the body in a transverse section in the meridional plane is made close to a square with rounded corners;

- shell zones adjacent to the bottom and upper part of the body are rounded with expansion to the zones of their contact with parts of the body.

Distinctive essential features that characterize the utility model in specific forms of execution are:

- the body of the container is made of a material selected from the bulk of iron and its alloys;

-the gas supply hole is made in a shell and is equipped with a nozzle located on its inner surface and equipped with fastening means of a gas hedge to it;

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-in the internal volume of the canister there is a device for monitoring the level of filling the cylinder with liquefied gas;

-KOHipojm device filling level of the container is made in the form of a float;

-Gas supply is made in the form of a multivalve. The implementation of the toroidal casing of three parts - the shell, the bottom and the upper part identical to the bottom - allows to replace the casting process with a rotary hood, which ensures the improvement of environmental environmental parameters and reduces the material costs for making the cylinder by reducing the number. necessary equipment, reduction of energy costs (metal melting is not required).

The installation of the shell between the bottom and the upper part of the housing also provides the possibility of manufacturing the bottom and upper part of the housing with a rotary hood. Due to the fact that the “gutter-shaped bottom and the upper part of the body are made of blanks in the form of a circle with a central hole, the rotational hood (bending) of the inner part of the circle in the zone of the central hole can be made to a lower Bbicoiy than its outer part. The installation of the shell compensates for the flaw, the height of the bend and allows it to be performed qualitatively without warping and tearing of the metal.

The implementation of the housing cross-section in cross section in the meridional plane in the form of a square with rounded corners is optimal with the above manufacturing technology, because predetermines the minimum labor costs in comparison with other types of sections. In addition, in the case when the outer and inner diameters of the torus are regulated by the place of installation of the cylinder, specifically the dimensions of the niche in the trunk of a car, the implementation of the cylinder

with a cross section in the form of a square with rounded corners can significantly increase its capacity.

The execution of the shell zones adjacent to the bottom and upper part of the body, rounded with an extension to the zones of their contact with the parts of the body, is caused by the design features of the cylinder and provides the necessary cross section at the minimum production costs.

The manufacture of the toroidal body of the container from a material selected from the group of iron and its alloys is determined by the conditions of use of the container and economic considerations. To use the tank c. As a fuel tank for passenger cars, it is intended to be installed in the trunk of a car instead of a spare wheel in a recess in the bottom, and therefore the mechanical strength of the balloon is needed to resist possible mechanical stresses. Of all the known alloys, an alloy of iron (steel) has the entire set of properties necessary to solve the problems posed.

The opening of the gas supply hole in the shell and equipping it with a nozzle located on its inner surface and having fastening elements of the gas supply means provides convenient operation of the cylinder and protects it from possible mechanical damage.

Equipping the internal volume with a device for monitoring the level of liquefied gas in the form of a float associated with a multivalve allows you to control the level of cylinder filling, shut off the gas supply when filling the cylinder by 85% of the volume, because according to operating conditions, it is necessary to have 15% of the gaseous fraction in the tank with liquefied gas.

The claimed technical solution is illustrated by drawings, in which:

FIG. 1 - depicts a view of the cylinder assembly with a cross section on the diametrical plane;

FIG. 2 - bottom view of the container;

FIG. 3 is a sectional view of a shell with a nozzle installed in a gas supply hole;

FIG. 4 is a sectional view of the bottom (and identical to the bottom of the upper part of the body).

The cylinder for storage and transportation of liquefied gas includes a tank having a capacity of 50 liters and a design pressure of 1.6 MPa, and is a toroidal casing consisting of an upper part 1, identical to the bottom 2, welded together along the outer diameter. The internal combustion of the body is formed by a shell 3, welded with its bases to the upper part 1 of the body and the bottom 2. The base of the shell 3 is made rounded with an extension to the bottom 2 and the upper part 1 of the body. The fillets are made at a distance LI, LI from the ends of the shell 3. Moreover, Li 15 mm; L2 21 mm. The body in cross section in the meridional plane is made close to a square with rounded corners with an outer diameter of the torus DI 600 mm and an inner diameter of the hole D2 150 mm. The body wall has a constant thickness of 4 mm. On the housing, from the side of the external torus hole in the body of the shell 3, a hole with a diameter of 73 mm is made for gas supply, to which the pipe 4 is welded. Six threaded holes 5 are placed at the pipe end 4 for connecting gas supply means to the car engine. Inside the shell 3 between the pipe 4 and the base of the bottom 2, a mounting disk 6 is welded, which is used to mount the balloon on the bottom of the car. And the upper part of the cylinder’s inner hole is closed by a cap 7,

installed on the roof rack (not shown in the drawing) after fixing the cylinder in the trunk of the car and filling it with liquefied gas.

As a means of supplying gas, a traditional multivalve (not shown) is used for gas cylinders, which also acts as a shut-off valve when filling the cylinder at 85% of the volume, for example, an EMER multivalve, type 95, OST 37.001.657. A float 8 connected to a multivalve is located in the internal cavity of the toroidal casing.

The manufacturing process of the cylinder for storage and transportation of liquefied gas includes the manufacture of body parts, their welding and Assembly of the cylinder as a whole.

RT shell manufacturing.

For shells use sheet steel StZps in accordance with GOST 16523 4 mm thick.

Cut a sheet stock with dimensions 4 jXl55 x470 mm,

using the NA-3225 guillotine nogttaz, bend the workpiece into the rim

on the pro-11 bending machine PG-4 and weld the junction with

using traditional fixtures and welding

equipment (welding installation УСП-11, automatic welding machine

ADS1000-4),

Welding solutions: welding current, A28-32;

voltage, V300-320;

welding speed, div.23-25;

wire feed speed, div. 35-30;

wire diameter, mm30.

After welding, heat treatment of the shell is carried out to relieve internal stresses using a known technology:

- cooling indoors to ambient temperature. Then on the hydraulic press HVC-2-250, HVC-2-160 the side of the shell

calibrated by stretching to mm; 2 mm; , 2mm, and after dimensional control they drill and

milling holes for gas supply mm.

Case manufacture.

The case is made of identical parts - the bottom and the upper part, interconnected by welding. For the manufacture of the body using sheet steel StZps in accordance with GOST 16523, a thickness of 4 mm. Square blanks of 750.i, 5x750.i, 5 mm in size are cut down using the NA-3225 guillotine knives. Then on the turning and rotary machine mod. 1516 cut the inner circumference with a diameter of mm and the contour of the outer circumference with a diameter of 730.2, about mm. After processing the workpiece on a lathe, a rotational extraction is carried out on the rolling mill horizontal PSA, 2-1800 to form the "gutter-shaped surface of the bottom of the cylinder. In this case, a rotational hood is produced, both curved sections of the bottom and cylindrical. When drawing, the inner diameter of the torus is adjusted from 130 mm to mm, and the outer diameter from 730 mm to mm. Then trimming of the terraces of circles is carried out, maintaining the specified height dimensions of the bent parts of the bottom: internal - 35 ± 0.3 (f1b2) mm and external - 110.0.87 (fbOO) mm.

In a similar way, the upper part of the cylinder body is made.

All control operations are carried out by traditional methods using well-known tools and devices.

By traditional methods, a mounting disk 6 is made, fixed by welding in the shell 3 and the cover 7 on a known

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equipment specified above. The material for the manufacture of these parts is StZps2sv GOST 14637-89 steel.

Welding of cylinder elements is carried out in the traditional way. When welding, use a welding wire in accordance with GOST 2246, electrodes in accordance with GOST 9466, welded flux in accordance with GOST 9087-81.

Prototypes of the claimed cylinder for storage and transportation of liquefied gas were manufactured at LLC Himremont, Vladimir, st. B. Nizhny Novgorod, house 81.

Operational tests were carried out in the testing laboratory Nefttest, Sergiev Posad, Moscow Region; NIIKHIMMASH, Moscow, Pyatnitskoe shosse, 27, building 1.

The test results showed the possibility of using the cylinder as a reservoir for fuel cars.

Using the claimed cylinder for transporting and storing liquefied gas in the automotive industry will ensure the transfer of cars with a horizontal spare tire in the trunk to gas fuel with low material costs, and the design decision will be saved on the type of car ../

, Authors „ll Ivanov AB

TO)

Darwin A.I.

Claims (6)

1. A cylinder for storing and transporting liquefied gas, comprising a reservoir capable of containing gas under pressure, provided with a gas supply opening, supply means and a shut-off valve connected to the opening, wherein the tank is a toroidal pressure vessel including a metal toroidal casing, and a gas supply hole is located on the inside of the torus, characterized in that the toroidal body, made welded, consists of three main parts - the shell, the bottom and the top b, the shell is installed between the bottom and the upper part of the body and forms the inner side of the toroidal body, the cross section of which in the transverse section in the meridional plane is made close to a square with rounded corners, and the zone of the shell adjacent to the bottom and upper part of the body is rounded with extension to the zones of their contact with parts of the body.  2. The cylinder according to claim 1, characterized in that the housing is made of a material selected from the group of iron and its alloys.  3. Cylinder according to claims 1 and 2, characterized in that the gas supply opening is made in the shell and is equipped with a nozzle located on its inner surface and equipped with elements for attaching a gas supply means to it.  4. Cylinder according to claims 1 to 3, characterized in that a device for monitoring the level of filling the cylinder with liquefied gas is placed in the internal volume of the housing.  5. The cylinder according to claim 4, characterized in that the device for monitoring the level of filling of the cylinder is made in the form of a float associated with a multivalve. 6. Cylinder according to claims 1-5, characterized in that the gas supply means is made in the form of a multivalve.