The high-pressure bladder, the method of manufacturing and filling device

 

(57) Abstract:

The invention relates to the construction of high pressure vessels. The high-pressure bladder includes a housing made in the form of a tubular shell, the diameter of the shell decreases as it approaches the ends of the two sleeves located on the same axis with the housing, at least one of which is equipped with a closed groove bounded by the surfaces of the second order. The edge of the tubular sheath is located between the aforementioned surfaces. Closed groove is limited by the two surfaces in contact by a closed curve. The permanent connection of the sleeve and the body is in the form of a weld. After orientation the first of the bushings inside the tubular billet is placed second sleeve, fixing the first sleeve and the formation of the neck under the second sleeve are performed simultaneously, and then move the second sleeve to lock the inner surface of the neck with a force determined by the formula: F=PsamplesSrwhere Rsamples- test pressure; Sr- square neck holes. The spacer device is provided with means for measuring the force of the thrust nut provided with an outer tapered thread with the means of its rotation. In achiev the designs of pressure vessels, in particular cylinders carbon dioxide fire extinguishers.

The known high-pressure bladder (the description of U.S. patent 2405201, N. CL. 29-422, published. 06.08.46), comprising a housing made in the form of a tubular shell with compressed ends of the two sleeves located on the same axis with the body, with the sleeve provided with grooves, limited by two conical surfaces, parallel to each other, and a cylindrical surface adjacent to the conical surfaces. Edge of the tubular shell in the molding process come into the grooves of the sleeves.

A disadvantage of the known construction of the container is reduced, the reliability of the solder joint, which is produced by sealing the joined parts. The disadvantages include the possible loading of the soldered seam of the axial forces resulting from the action of gas pressure.

Above the cylinder is produced according to the method in which the ends of the tubular shell compresses, as a result, the edge of the shell comes in an annular groove of the sleeve, the sealing of the container is effected by means of soldering.

The disadvantage of this method of manufacturing a high-pressure bladder is dvuhprohodnoe operation of the punching ball: engineering, 1976, S. 133, Fig. 2.240, S. 134), including the two screws with different direction of carving and the body attached to it corresponding nuts.

The disadvantage of this spacer Jack is the inability to apply in conditions of restricted space.

The problem solved by the invention is to improve the reliability and security of high-pressure cylinders, reducing the monitoring requirements of finished products, reducing the cost of finished products.

The technical result achieved in the use of the inventions is to improve the quality of the weld, namely solder weld fillet weld with full penetration of the edges, unloading weld from axial forces resulting from the action of gas pressure and, consequently, improving the reliability and quality of the high-pressure cylinders, the application of spacer devices in conditions of restricted space.

This technical result is achieved in that the pressure vessel, comprising a housing made in the form of a tubular shell, formed so that the diameter of the shell decreases as it approaches the ends of the two sleeves, located arnosti, contiguous closed curve, the edge of the tubular sheath is located between the aforementioned surfaces, and sealing the junction of the sleeve and the body is one-piece connection. The permanent connection of the sleeve and the body is in the form of a weld with full penetration of the edges.

In addition, the weld is made in the form

corner seam;

- butt seam on the lining;

- contiguous closed curve surfaces have the form of surfaces of the second order;

- contiguous closed curve surface of the second order have the form of conical surfaces;

one surface is made in the form of a surface of the second order, and the other surface of the second order is made in a plane perpendicular to the axis of rotation of the body;

one surface of the second order is made in the form of a conical surface and the other surface of the second order is made in a plane perpendicular to the axis of rotation of the body.

A method of manufacturing a high-pressure bladder segment includes billets, the orientation of the bushings relative to the edges of the billet and fixing them in the neck and the bottom with subsequent Hermetica is of the first sleeve and the shaping of the neck under the second sleeve are performed simultaneously, then move the second sleeve to lock the inner surface of the neck with a force determined by the formula:

Fp=Psamples*Sr,

where Rsamples- test pressure;

Sr- the orifice of the neck.

Axial force to create the spacer device comprising a body of cylindrical shape with a fixed coaxially with the nut, the device is equipped with means of measuring the force of the thrust nut provided with an outer tapered thread with the means of its rotation.

The invention is illustrated by drawings, where Fig.1 shows a high-pressure bladder of Fig.2 is an embodiment of an annular groove of the sleeve of Fig.3 shows the initial position of the billet container in the stamp of Fig.4 shows the blank of the container after molding tubular sheath of Fig.5 shows the process of creating the expansive force of Fig.6 - coil spacer.

The high-pressure bladder includes a housing 1, made in the form of a tubular shell, formed so that the diameter of the shell decreases as it approaches the ends of the sleeves 2 and 3 are located on the same axis with the housing 1. The sleeve 2 has an annular groove bounded by two surfaces 4, coprinaceae the groove sleeve 2 may be limited to a conical surface and a plane 7, perpendicular to the axis of rotation of the housing 1. The seam 5 is made in the form of corner weld with full penetration of the edges of the tubular shell, and the seam 6 is made in the form of a butt seam on the lining with complete penetration of the edges. The role of the lining performs the sleeve 2, and the role of joined edges - the edge 8 of the housing 1 and the plane 7.

The high-pressure bladder works as follows. The gas stored in the tank under pressure, acts on the part of the sleeves 2, 3 located inside the container, pressing the sleeve to the respective inner surfaces of the cap body 1. When this power element receiving the axial force resulting from the action of gas pressure, is the mechanical connection of the housing 1 and bushing 2, 3, and welds 5 and 6 only performs a sealing role.

A method of manufacturing a container can be implemented as follows. In the stationary part 9 of the stamp is placed the sleeve 2, there is placed the sleeve 3. In the middle movable part 10 of the stamp is placed tubular workpiece 11 of the housing 1. Lower upper movable part 12 of the stamp, while simultaneously forming the ends of the tubular shell. Simultaneously with the molding of the bottom end of the tubular shell to produce the fixing sleeve 2. Then PE
F=Psamples*Sr,

where Rsamples- test pressure;

Sr- the orifice of the neck.

The axial force created by the spacer device. The latter includes a housing 13 has a cylindrical shape with a fixed coaxially with the nut 14 with the outer conical and cylindrical internal threads and the screw 15 moving along the cylindrical threaded nut 14.

Spacer device operates as follows. The nut 14 with the outer tapered threads screw into a corresponding threaded sleeve 3. Then produce a tightening screw 15 in a certain time, while the torque is converted into an axial force. When creating axial force selected the gaps between the conical surface of the bushing 2 and 3 and the corresponding surfaces of the tubular shell 1. After welding and removal of the spacer device welds loaded by the axial force acting in the direction of the internal volume of the container. The above-mentioned axial forces arise as a result of elastic deformation of asperities of the surfaces on which the contact sleeve 2, 3 and the housing 1, and the elastic deformation objetych ends of the housing 1. After injection of the compressed gas cylinder predvareno welds 5, 6 from any effort resulting from the action of gas pressure.

Thus, the use of the invention allows to increase the reliability and safety of high-pressure cylinders, to reduce the cost of their production. The use of the invention allows to refuse from the use of methods of non-destructive testing of welded joints in the manufacture of high-pressure cylinders, and to control only the tightness of the welded connection.

1. Cylinder high pressure, comprising a housing made in the form of a tubular shell, formed so that the diameter of the shell decreases as it approaches the ends of the two sleeves located on the same axis with the housing, at least one of which is equipped with a closed groove bounded by the surfaces of the second order, and the edge of the tubular sheath is located between the aforementioned surfaces, and sealing the junction of the sleeve and the body is one-piece connection, characterized in that the closed groove is limited by the two surfaces in contact along a closed curve, and the permanent connection of the sleeve and the body is in the form of a weld with full penetration of the edges.

3. The high-pressure bladder under item 1, characterized in that the weld is made in the form of a butt seam on the lining.

4. Cylinder high pressure PP.1-3, characterized in that the contiguous closed curve surfaces have the form of surfaces of the second order.

5. The high-pressure bladder under item 4, wherein the contiguous closed curve surface of the second order have the form of conical surfaces.

6. The high-pressure bladder under item 1, characterized in that one surface of the second order has the form of a plane perpendicular to the axis of rotation of the body.

7. A method of manufacturing a high-pressure bladder, including the segment of tubular workpiece, the orientation of the bushings relative to the edges of the billet and fixing them in the neck and the bottom with the subsequent sealing of the joint, characterized in that after the first orientation of the bushings inside the tubular billet is placed second sleeve, fixing the first sleeve and the formation of the neck under the second sleeve are performed simultaneously, and then move the second sleeve to lock the inner surface of the neck with a force determined by the formula

F=PsamplesSr,

where Rthe housing has a cylindrical shape with a fixed coaxially nut, characterized in that the device is provided with means for measuring the force of the thrust nut provided with an outer tapered thread with the means of its rotation.

 

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