The high-pressure bladder and method of its manufacture

 

(57) Abstract:

The invention relates to the processing of metals by pressure and can be used in the manufacture of high-pressure cylinders for storage and transportation of compressed and liquefied gases mainly for the production of fire extinguishers. The high-pressure bladder includes a Cup 1 neck 2, the sleeve 6. The inner surface 3 of the cap 2 is in contact with the surface 4 of the thickening 5 bushing 6, which may be intermittent or annular. The neck 2 is bonded with the sleeve 6 circular welded seam 7, the internal surface 3 of the neck 2 in contact with the surface 4 of the thickening 5 bushing 6 and the surface 4 of the thickening is made conical. A method of manufacturing a high-pressure bladder includes the orientation sleeve 6 relative to the Cup 1 by placing the inside of the glass, the formation of the neck 2, the movement of the sleeve in the direction of the neck until it stops in the inner surface 3 of the tube fixing sleeve to the neck, application of a circumferential sealing seam 7. This increases the reliability of the high-pressure bladder by reducing the complexity of the manufacturing process and the requirements for precision manufacturing. 2 S. p. on in the manufacture of high-pressure cylinders for storage and transportation of compressed and liquefied gases mainly for the production of fire extinguishers.

Known cylinder pressure, consisting of a glass filler, a hole which allows free passage of the sleeve to the inside of the Cup and back. This sleeve is fixed on the neck using circular weld, while performing the role of fixing and sealing of the structural element. (R. Nichols. The design and technology of manufacturing of pressure vessels. M: Engineering. 1975. S. 271).

The disadvantage of this design is that the weld is sound, which requires the application of nondestructive testing methods and in the case of small dimensions of the vessel does not allow free distribution and use of the elements of NDT equipment. In addition, testing the tightness of the joint. All this increases the complexity of manufacturing and the cost of the high-pressure bladder.

Known cylinder pressure, including a glass of neck and sleeve with multiple annular projections, and the sleeve is seamed in the neck and rolling fixation of the sleeve relative to the collar and a seal sleeve neck. (The description of the patent of the USSR N 1838712 A3, IPC F 17 boesposobny at low pressures, short-term operation with a periodic check of the tightness of connections and cannot be used as the design of the high-pressure bladder for long-term storage of gases or liquefied gases.

A known method of manufacturing a cylinder pressure, including heating of the billet from one end and attaching the cold end of the spindle rolling machine. The sleeve on the mandrel enter into balloon preform at a distance that defines a longitudinal size of the neckline. The mandrel is mounted on the axis of the workpiece. The workpiece is driven into rotation. The driver begins to move, shaping the neck. At the moment of contact of the sleeve with the workpiece, the sleeve comes into rotation and further sealing is installed along the axis of the workpiece. Procurement of finished neck stops, the mandrel is freely removed from the mouth without damaging the threads. (The description of the patent of the USSR N 1838712 A3, IPC F 17 C 1/00, B 21 D 22/16. Publ. 30.08.93).

The drawback of this method is that the formation of the cap to the sleeve combines the fastening sleeve to the neck and seal the junction of the sleeve and the neckline with the introduction of radial deformation of the sleeve, resulting in residual deformations of the power going to the wall of the neck leaves the corrosion of the contacting walls of the cap and sleeve due to the presence of water in the gas, injected into the cylinder pressure. Made in this way, the high-pressure cylinders are suitable for short time operation with periodic check for leaks.

The famous design of the container, including the glass neck, the edge of which is placed in the annular groove of the sleeve and the seal bushing neck is carried out by soldering. (The description of U.S. patent N 2405201, NC. 29-422, publ. 06.08.46 prototype high-pressure bladder).

The disadvantage of this design are high demands on the manufacturing process of the pressure vessel by cutting grooves in the sleeve, ensuring high precision of process of formation of the neck, the edge of which is placed in the annular groove of the sleeve. It is known that the pressure vessels are thick and require significant efforts by forging, and the higher the power of the press, the lower the precision.

A known method of manufacturing a cylinder pressure, comprising a fastening sleeve in formulatea, the formation of the neckline with the placement of the edges of the neck in the groove of the sleeve and the sealing joint with the sleeve by soldering. (The description of U.S. patent N 2405201, NC. 29-422, publ. 06.08.46 - the prototype of the method of manufacturing the score is in the groove of the sleeve it is necessary to ensure high accuracy of manufacture of the sleeve, driver and attaching the sleeve to the driver or in the absence of such requirements - there will be a gap between the inner wall of the cap and the corresponding surface in the groove of the sleeve, thus soldering becomes simultaneously sealing and bearing element. In the latter case, decreasing the reliability of the high-pressure bladder for prolonged storage of liquefied or compressed gas. It is known that the pressure vessels are thick and require significant efforts by forging, and the higher the power of the press, the lower the precision.

The present invention is to provide a new robust design high-pressure bladder and method of its manufacture in conditions of large-scale and mass production.

The technical result will be a reduction in the requirements of the geometrical dimensions of the parts of the container and reducing the complexity of its manufacture.

This technical result is achieved by the fact that in the known high-pressure bladder containing a glass filler, the internal surface of which is made in the form of a surface of the second order, sealed with the mouth of the sleeve, the side surface of the thickening, made conical. In addition, thickening of the completed ring.

In a known method of manufacturing a high-pressure bladder, including the orientation of the sleeve, forming a cap on the glass, fixing the sleeve on the neck with the subsequent sealing of the junction of the sleeve with round neck with a description of the U.S. patent N 2405201, N. CL. 29-422, publ. 06.08.46 - the prototype of the method of manufacturing a high-pressure bladder), first introduced the orientation of the sleeve relative to the Cup by placing it inside the jar, and after forming the cap sleeve is moved in the direction of the neck until it stops in the inner surface of the neck.

In Fig. 1 depicts a high-pressure bladder. In Fig. 2 shows the sequence of the method for manufacturing a high-pressure bladder.

The high-pressure bladder includes a Cup 1 neck 2, the inner surface 3 of the cap 2 is in contact with the surface 4 of the thickening 5 bushing 6, and the neck 2 is bonded with the sleeve 6 circular welded 7; fitting, closing the hole 8 in the sleeve 6 during operation of the high-pressure bladder of Fig. 1 is not shown.

The high-pressure bladder works as follows.

The gas stored in the BA the surface 3 of the cap. Thus the power element in the connection neck 2 and the sleeve 6 when the operation is thickening 5, and the annular welding 7 is a sealing element, since the gas at the unevenness of the inner surface 3 of the neck 2 and the surface 4 of the thickening 5 bushing 6 penetrates the weld 7.

A method of manufacturing a high-pressure bladder includes the orientation sleeve 6 relative to the Cup 1 by placing the inside of the glass, the formation of the neck 2, the movement of the sleeve 6 in the direction of the cap 2 to the stop in the inner surface 3 of the neck 2, the mounting sleeve 6 to the neck 2, the application of a circumferential sealing seam 7.

Implementation of the proposed design of a high-pressure bladder and method of its manufacture can increase the reliability of the high-pressure bladder by reducing the complexity of the manufacturing process and the requirements for precision manufacturing.

1. Cylinder high pressure, comprising a glass neck, the inner surface of which is made in the form of a surface of the second order, attached to it by welding the sleeve, the side surface of which is made in the form of a surface of the second order, and the bushing located inside the container, the Oia on the sleeve, contact with the mouth, is made conical.

2. A method of manufacturing a high-pressure bladder, including the orientation of the sleeve, forming a cap on the glass, the fixing sleeve in the neck with the subsequent sealing of the joint, wherein the first carry out the orientation of the sleeve relative to the Cup by placing it inside the jar, and after formation of the cap moves the sleeve in the direction of the neck until it stops in the inner surface of the neck.

 

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FIELD: plastic working of metals, namely manufacture of high-pressure bottles.

SUBSTANCE: method comprises steps of forming shell; swaging at least one open end of shell; forming bottom and mouth while making at least two mutually joined cone surfaces and increasing central angle from shell to mouth; at least after one swaging operation performing heat treatment of swaged end of shell. High-pressure bottle includes shell and two bottoms. One bottom has mouth for placing locking means. Bottom and mouth are made as one piece. Bottom from shell until mouth is in the form at least of two joined lateral surfaces of circular regular truncated cones. Each such joint is performed due to joining lateral surfaces of truncated cones along lines of bases of their small and large diameters respectively. Said joints may be smooth, with radius transitions.

EFFECT: simplified design of bottle, enhanced technological effectiveness of making it.

6 cl, 4 dwg

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