SU1037010A1 - Flanged pipe joint for passing-through hot medium - Google Patents

Description

The invention relates to mechanical engineering, to joints of electric hot water boilers with heat conductors j mainly to sealing the connection of plastic pipelines with an outwardly clad sheath of strength with a metal flange. A connecting link for cryogenic pipelines with screen-vacuum insulation, made in the form of a glass with double walls forming a vacuum chamber, where between the walls and elements of the connected ends of the pipe sections are formed, grooves for sealing rings preventing leakage are known. outwardly seeping in the junction area of pipes 1 3. The disadvantages of the known device are the difficulty of manufacture and unsuitability for use in inserts for sealing the connection of the pipe to the flange for passing the hot medium, since when the temperature changes, it is impossible to obtain a constant amount of vacuum, which leads to the deterioration of the compaction of the compound and the appearance of a fluid leakage medium. The closest to the invention with the technical essence and the achieved result is the connection of a pipe with a flange for the passage of hot medium containing a plastic pipe (5 with a sheath of strength, a metal flange, a locking element, a pressure sleeve and a sealing sleeve. A disadvantage of the known connection is the fit of the plastic close to the internal surface of the flange, which at temperature lengthening of the pipe creates compressive forces leading to the formation of longitudinal cracks in the plastic pipe and shell severe medium leaks. In addition, when temperature conditions are applied, due to a large plastic pipe elongation, stresses arise which lead to the destruction of the pipe's horses and strength cladding. The medium leaks and the electrical tube is removed from the work. This goal is achieved by the fact that in connecting a pipe to a flange for passing a hot medium containing a plastic pipe with a sheath of strength, a metal flange, a locking element , the pressure sleeve and the sealing gasket, the inner i surface of the pipe end and the outer v surface of the end of the sheath are tapered, the flange is fitted with an elastic conical sleeve that interacts with the inner conical surface of the pipe, and between the conical surface of the end of the sheath strength, a lock and a sealing gasket are installed elastic cuff. The drawing shows the proposed connection, the cut. It contains a plastic pipe 1, for example, from fluoroplastic, anatrenn the surface 2 of the end of which is made conical. The tube 1 is fitted with a sheath of strength 3, made, for example, of glass cloth on epoxide. Resins, the outer surface k of the end of which is also made conical. A tube 1 with a sheath 3 of strength is inserted into a housing 5 of a flange structure, whereby an elastic conical sleeve 7, made for example of rubber, is put on the inside of the flange structure 6, and the cavity between the end part of the pipe 1 and the upper structure 5 of the flange joint Elastic packing 8, made, for example, of graphite cord, and between the conical surface 4 of the shell 3 and the strength of the pipe 1 is worn a profiled elastic cuff 9, made, for example, of rubber. A 1P lock is attached to the strength shell 3 and to the profiled cuff 9. The support sleeve 11 with the upper flange structure 5 is connected with bolts 12 and is adjacent to the strength shell 3, to the lock 10, the flange 13 is connected to a high voltage electric boiler (not shown). When tightening the bolts 12, the support sleeve 11 acts on the lock 10, which presses against the profiled cuff 9, compressing the elastic gasket 8 and clamping the durability shell 3. At the same time, the conical surface of the durability shell 3 is firmly pressed against the profiled cuff 9. Pr and the passage of hot water from the electric boiler through pipe 1 there is a significant lengthening of formation3 10370104

mass pipe due to the large coefficient At a decrease in water temperature

linear pipe, plastic expansion: plastic tube 1 and shell

the mass of the pipe 1. When lengthening the squeeze-3 strength is shortened, however

A conical elastic cuff 7, and the presence of elastic cuffs 7 and 9, ensure that the end breaks down; 5 tight, reliable sealing is prevented

mass pipe 1 and sheath 3 of bore-joint pipe, not allowing

from direct contact of the leakage of the medium, by a metal flange 13

no longitudinal cracks are eliminated

the plastic pipe and on the shell 3 dineni is to increase

durability. reliability of his work.

Claims (1)

CONNECTION OF A PIPE WITH A FLANGE FOR PASSING A HOT MEDIA, containing a plastic pipe with a sheath of strength, a metal flange, a locking element, a pressure sleeve and a sealing gasket, characterized in that, in order to increase the reliability of the connection, the inner surface of the pipe and the outer surface of the end of the sheath are made of conical , on the flange there is an elastic conical a profiled elastic cuff is installed in the packing.