A method of manufacturing and/or recovery of acetylene cylinders filling fibrous porous mass "pretty"

 

The invention relates to the production of acetylene cylinders filled with a porous mass. Produce and/or restore the cylindrical part and the bottom of the case cylinder. The cylindrical part is subjected to a test to test for strength. This is followed by the formation of a porous fibrous mass “PRETTY” by convolutions in the roll in a spiral of basalt fiber Mat with layers. Layer composed of a fabric with high wettability and reinforcing mesh or perforated tape of heat-conductive metal material. Set the roll on the inside of the cylindrical part from the open bottom end. Assemble plate for welding and welding the annular seam thickened edges or with the weld reinforcement rings. Perform air test in density. The method provides high performance and efficiency of the technological process, ease of performance, reliability, control, high quality and reliability of acetylene cylinders. 1 Il.

The present invention relates to the production of acetylene cylinders are filled with fibrous porous mass "PRATE", and can and cast.

Acetylene cylinder is a generic container used for storage and transportation, and as a source of battery gaseous acetylene in gas welding works.

In domestic and foreign practice as a body, an acetylene cylinder is the most widely used gas cylinders high pressure representing a monolithic thick-walled seamless cylindrical metal shell with a hollow bottom bottom top bottom, containing a narrow neck with a threaded fitting for screwing shut-charger-metering valve (see, for example, GOST standard 949-73 "steel Cylinders for small and medium volume for gases at Pslaveof 19.6 MPa (200 kgf/cm2). Specifications; ISO 3807-77 "Cylinders of dissolved acetylene. General technical requirements." This design determines the only way to fill buildings acetylene cylinders porous masses only through the narrow threaded neck. This fact severely limits the choice of materials, porous masses, and greatly complicates the process and increases the complexity of filling a porous mass makes it difficult to maintain EF, the left metallurgical industry, and the limited use of the materials for the formulation of a porous mass, allowing the filling cylinder means filling (bulk porous mass based infusorial earth or activated charcoal) or fill flowable slurry (based on the calcium hydrosilicate and asbestos) /see, for example. Guidance document RD 26-05-3-89 "Methodical instructions on maintenance, inspection and operation of acetylene cylinders with carbon BAU-AS-cast porous mass, VNII AUTOGENES, M., 1989; specifications TL6-21-38-85 "Cylinders for dissolved acetylene-cast porous mass." The Ministry of chemical industry, registered in VIFS 26.03.1985 # 2535804.; Grunina M. M. development of a system safety process of filling of acetylene cylinders, the dissertation on competition of a scientific degree K. T. H. - M., 1993.

It should be noted that currently used in the Russian Federation porous masses have a number of deficiencies that would impair prospects for their industrial use. For example, a bulk porous mass of JSC "INTERGAS" based on activated carbon BAU and BAU-AC has a smaller getownerelement, sa is constantly increasing scarcity and cost of activated carbon, and cast porous mass CVL used at JSC "Uraltechgas", is composed of carcinogenic asbestos, prone to shrinkage gap between the block of the hardened porous and the inner wall of the cylinder, which increases the risk of detonation decomposition of acetylene in parietal gap in the penetration of the container of the heat pulse, and extremely large (>100 h) duration of the technological cycle of filling a flowable slurry and subsequent drying and thermal curing, the lack of objective methods and tools for quality control of the filling of the container.

In addition, it is known (see, for example, Miller C. Acetylene, its properties, production and application. - Leningrad, 1969) that, as a material for the porous mass of acetylene cylinders greatest practical interest fibrous silicates, for example, based on basalt fiber, produced from rocks of basalt, which was widespread in the Russian Federation, and has low cost of production and environmental cleanliness.

Currently developed (see RF patent №2109794, MKI 6 10 N 1/08, F 17 C 11/00, publ. 27.04.1998) porous mass "PRETTY" for acetylene cylinders, representing a Mat made of basalt polot what Iwamoto, ensure uniform impregnation of the porous mass of acetone, and between layers of the rolled fibrous material from the center to the outer surface of the padded heat-conductive metal layer in the form of a thin mesh or perforated tape.

Fill the housing acetylene cylinder fibrous porous mass PRETTL" by known methods through the narrow mouth is not possible.

As the closest prototype of the selected method (see RF patent №2145920, MKI 7 23 R 6/04, 21 D 51/24 "Method for recovery of high-pressure cylinders, including the segment bottom, emptying and cleaning of the internal cavity, the improvement of the cylindrical part of the cylinder Assembly with the bottom part of the weld, the welding ring seal and install on the weld reinforcing rings and hydraulic testing for strength.

The aim of the present invention is to find ways to fill the body of the container fibrous porous mass "PRETTY, providing high performance and efficiency of the technological process, the simplicity and reliability of control, high quality and reliability of acetylene cylinders.

This goal is achieved by the fact that in the known method, the welding ring seam, by thickened edges or installation on the weld reinforcing rings and hydraulic testing of the strength of the recovery or production of the metal housing of the acetylene cylinder and filling him with fibrous porous mass "PRETTY" is carried out in a single technological cycle, and prior to Assembly for welding cylindrical part is subjected to hydraulic testing for strength, and then produce a molded porous "PRETTY" by convolutions in the roll in a spiral of basalt Mat paintings with layers of canvas with high wettability and mesh or perforated tapes from teploprovodnogo material, set the roll in a cylindrical part, assemble with a bottom weld, welding the annular bead and the pneumatic test on the density of filled porous mass of the balloon.

Not known to the authors of the technical solution, indicating the claims of signs aimed at achieving the same goal and claimed as the invention the object, so the proposed solution meets the criterion of "novelty".

The features distinguishing the claimed technical solution, not identified in other technical solutions and, therefore, provide the claimed according kunye technological operations, performed in the following sequence.

From chiseled sheet 1 (diameter d1thickness1in cold punched deep Cup 2 (diameter d1the wall thickness1), the pole of which bottom warawut turned the thread 3 and the workpiece 4 on the mill produced by cross-helical rolling roll with thinning of the wall thickness1prior to the settlement thicknesspformed cylindrical part of the housing cylinder is subjected to a test by hydraulic testing hydraulic stand high pressure 6, and then produce the molded fibrous porous "PRETTY by a convolution of the spiral roll 7 Mat basalt fiber 8 with the layers consisting of the blade 9 with high wettability and reinforcing mesh or perforated tape 10 from a thermally conductive metal material, and set the roll 7 into the cylindrical part of the housing 5 from the open bottom end, and then from sheet stock 11 (diameter D2thickness2) stamp the bottom 12, carry out consistently the Assembly for welding and welding to the charger-metering valve 14 into the socket 3 of the neck of the body of the container, pneumatic test on the density of the finished filled fibrous porous mass "PRETTY" acetylene cylinder 15 on the stand 16 and the delivery of the container to the warehouse of finished products 17.

The proposed method for the manufacture and recovery of acetylene cylinders filling fibrous porous mass "PRETTY" tested in the manufacture of cylinders prototypes159 mm and a volume of 8.5 liters for portable gas cutting equipment and reconstruction of tanks219 mm, with a volume of 40 l according to GOST standard 949-73.

Example 1 (production).

Cutting the workpiece with a diameter of d1=430 mm, sheet metal thickness 6 mm (steel 20 GOST 1050-74); stamping-hood cold Cup with an inner diameter of d1=147 mm, height 270-10mm; facing glass for welding and boring holes60 mm below the fitting; turning fitting with tapered threads W=30,3 mm according to GOST 9905-81; rotary extractor cylindrical part of the body of the container with the thinning of the workpiece with the original thickness1=(6±0,1) mm on the calculated thickness1=(1,9±0,1) mm; hydraulic testing trial cylindrical part of the body at a pressure of 9.0 MPa (90 kgf/cm2) aged for 2 min without damage); cutting the workpiece with a diameter of D2=250 mm, sheet metal thickness2=3 mm steel st3sp GOST 16523-89; stamping-hood bottom with an inner diameter of 149 mm; facing the bottom for welding; machining of pipe1596 mm according to GOST 8732-78 reinforcing rings-Shoe15970 mm; assembling and folding roll145650 mm fibrous porous "PRETTY" (Matt basalt fiber technologies-SP TU 95.2348-92; mesh steel woven No. 5 wire0.4 mm; cotton fabric); set roll porous on the inside of the cylindrical part of the housing from the open bottom end; an Assembly for welding filled with a porous mass of the cylindrical part of the body with the bottom plate and welding the annular seam; installation of reinforcing rings-Shoe and welding ring interrupted suture; screwing acetylene charging-metering valve of BWA-1 on THE other 26-05-527-82; the pneumatic test on the density of nitrogen with a purity not less than 97% according to GOST 9293-74 pressure of 3.5 MPa (35 kgf/cm2) for 2 min; color (PF 159210 mm cylindrical part of the body (trumpet1596 according to GOST 8732-78); cutting the pipe ends for welding with bottoms; cutting blanks with a diameter of D2=250 mm, sheet metal thickness2=3 mm steel st3sp GOST 16523-89; stamping-hood bottom with an inner diameter of 149 mm; facing weld (and boring holes60 mm at the top the bottom under fitting); turning fitting with tapered threads W 30,3 mm according to GOST 9905-81; welding the top plate with the nozzle and the workpiece pipe cylindrical part of the housing; a rotary extractor cylindrical part of the body of the container with the thinning of the workpiece with the original thickness1=(6±0,1) mm on the calculated thicknessp=(1,9±0,1) mm; hydraulic testing trial of the cylindrical part at a pressure of 9.0 MPa (90 kgf/cm2) for 2 min (pilot batch of cylindrical parts in quantities of 6 pieces was subjected to a further stage of loading to the pressure of 15.6 MPa (156 kg/cm2) aged for 2 min without damage); assembling and folding roll145650 mm fibrous porous IADI src="https://img.russianpatents.com/chr/8856.gif">0.4 mm; cotton fabric); set roll porous on the inside of the cylindrical part of the housing from the open bottom end; an Assembly for welding filled with a porous mass of the cylindrical part of the body with the bottom plate and welding the annular seam; installation of reinforcing rings-Shoe and welding ring interrupted suture; screwing acetylene charging-metering valve of BWA-1 on THE other 26-5-527-82; the pneumatic test on the density of nitrogen with a purity not less than 97% according to GOST 9293-74 pressure of 3.5 MPa (35 kgf/cm2) for 2 min; color (PF-115 white); delivery to the warehouse of finished products.

Example 3 (recovery).

Dividing cutting acetylene cylinder by segments of the bottom part and dimensional cylindrical upper threaded portion length 550 mm; emptying and cleaning the inside of the cylindrical cavities and bottom parts of the container; rotating the cylindrical hood upper threaded part of the body with thinning of the wall thickness1=(8±0,2) mm on the calculated thickness (2,8±0,1) mm; hydraulic testing trial of the cylindrical part at a pressure of 9.0 MPa (90 kgf/cm2) for 2 min (pilot batch of cylindrical parts in quantities of 6 pieces was subjected to a further stage Negroid src="https://img.russianpatents.com/chr/8856.gif">2001320 mm fibrous porous "PRETTY" (Matt basalt fiber WSTV-SP TU 95.2348-92; mesh steel woven No. 5 wire0.4 mm; cotton fabric); set roll porous inside cylindrical upper threaded part of the housing from the open bottom end; an Assembly for welding filled with a porous mass of a cylindrical part with a bottom part and a welding ring seam thickened edges1=(8±0,2) mm); screwing acetylene charging-metering valve of BWA-1 on THE other 26-05-527-82; the pneumatic test on the density of nitrogen with a purity not less than 97% according to GOST 9293-74 pressure of 3.5 MPa (35 kgf/cm2) for 2 min; color (PF-115 white); delivery to the warehouse of finished products.

The proposed method for the manufacture and recovery of acetylene cylinders filling fibrous porous mass "PRETTY" in comparison with the known analogues and the prototype provides:

a radical change in the structure of production and operation of acetylene cylinders due to the inclusion of the technological process of filling the casing of the cylinder of fibrous porous mass "PRETTY" in the production cycle is about an acetylene cylinder, transmitted to acetylene gas filling station and on to the consumer in operation;

practical possibility with maximum simplicity and low complexity to use fibrous porous mass "PRETTY" in acetylene cylinders;

quality control of technological process of manufacture of welded metal housing, the formation and the quality of the installation of a roll of fibrous porous mass in the inside of the container and, accordingly, to assure the reliability of operation of an acetylene cylinder.

Thus, the proposed solution provides a positive effect and has the criterion of "positive effect".

The use of the present invention does not require additional re-equipment of enterprises. The first industrial testing will be conducted at JSC "INTERGAS" and JSC "Uraltechgas" in the second quarter of 2002

Claims

A method of manufacturing and/or recovery of acetylene cylinder filling fibrous porous mass “PRETTY”, which includes the manufacture and/or repair of the cylindrical part and the bottom housing of the cylinder Assembly for welding and welding the annular seam otlichayushiesya fact, that manufacture and/or repair the metal housing of the acetylene cylinder and filling him with fibrous porous mass “PRETTY” is carried out in a single technological cycle, while before Assembly for welding cylindrical part is subjected to a test to test for strength, and then produce the formation of a porous fibrous mass “PRETTY” by convolutions in the roll in a spiral of basalt fiber Mat with layers consisting of canvas with high wettability and reinforcing mesh or perforated tape of heat-conductive metal material, set the roll on the inside of the cylindrical part from the open bottom end, assemble with a bottom weld, welding the annular bead and the pneumatic test on density.

 

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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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