CZ30002U1 - Tube connection of lining tube sections, especially flexible tubes for flue ways - Google Patents

Abstract

The connection of tubular sections (1, 2) of the lining tubes, in particular the flexible tubes for the flue ways, the sections (1, 2) of the lining tubes being alternately provided with terminal telescopic insertable inner nipples (3) with locking pins (4) and outer nipples (5) that are provided with inner circular groove (6, 7) wherein the first inner circular grooves (6) are provided with at least one guiding groove (8) for the locking pin (4), on the sides of which at least one embossed notch (9) is located in the first inner circular groove (6), said notch being arranged to be movable solely unidirectionally by the movement of the locking pin (4) in this groove (6).

Description

Pipe connection of liner pipe sections, in particular flexible flue gas pipes

Field of technology

The technical solution relates to the arrangement of a mutual pipe connection of sections of liner pipes for flue gas paths, in particular flexible pipes, aka "goosenecks".

Prior art

Flexible pipes are usually used when inserting the flue gas path. In order to extend them, in most cases they are cut in the required place, then the cap nut is pushed in, the sealing ring is fitted and the required connection section of the liner is firmly screwed in with a cap nut to ensure a suitable joint tightness. In most cases, with respect to the course of the flue gas path, the interconnection of the sections of the liner tube is repeated.

The disadvantage of this arrangement of the mutual pipe joint is in particular that it requires the correct insertion of the sealing ring into the grooves of the respective flexible pipe section and the tight tightening of the cap nut, both for tightness and for the strength of the joint to prevent disconnection. The connection by means of the mentioned means is usually carried out in a limited space on the roofs of buildings at the mouth of the flue - chimney shafts, where there are problems with assembly and handling, as well as with storage of elements necessary to connect sections of liners.

Said disadvantages contribute to the increase in the price of the installation of liner pipes in the flue gas paths.

The essence of the technical solution

The aim of the technical solution is to create a new, reliable and simpler type of connection of liner pipe sections for flue gas paths, especially flexible pipes, the essence of which is that the liner pipe sections are alternately provided with end telescopically insertable inner necks with locking pins and outer necks. provided with inner round grooves, the first inner round grooves being provided with at least one guide groove for a locking pin, on the sides of which at least one imprinted tooth is arranged in the first inner round groove, unidirectionally overcome by movement of the locking pin in this groove.

The technical solution advantageously simplifies the connection of the insert pipe sections using the so-called bayonet connection, especially simplifies the handling of the connection of flexible pipe sections at the end mouth of the inserted flue gas path, where the safety of installers is concerned, various insertion of cap nuts, demanding installation of sealing rings, screwing required part, etc.

Advantageously, in order to strengthen and mechanically secure the connection of the liner tube sections, according to the technical solution, the provision of this connection is encircled by a securing sleeve.

Explanation of drawings

Further advantages and effects of the presented technical solution are evident from the attached drawing, where it indicates.

Fig. 1 is a view of the end mutually telescopically insertable necks of the connected insert tube sections, an inner neck with a locking pin and an outer neck with formed inner round grooves and provided in the first end with at least one guide groove for the locking pin and provided with embossed teeth, Fig. 2 is a view of the final assembly of the pipe connection of the liner tubes after mutual telescopic insertion, Fig. 3 is a section BB of Fig. 2 with the fixing pin after passing through the guide groove to the level of the first inner round groove in the outer neck for bayonet closure;

Fig. 4 is a view of the complete pipe connection of the liner sections after it has been encircled by the safety sleeve, Fig. 5 is a section CC of Fig. 4 showing the places and forms of locking of the edge edges of the sleeve over the mutual pipe connection of the liner sections for Fig. 6 is a detail of a partial section of the engagement of the upper edge of the safety sleeve over the outer raised edge of the second circular groove of the outer neck, Fig. 7 is a detail of a partial section of the lower edge of the safety sleeve at least behind the first wave fold of the flexible tube; Fig. 8 is a section AA of Fig. 1 showing the course of the first inner round groove with guide grooves and with imprinted teeth for the locking pin, Fig. 9 is an oblique view of the embodiment of the locking sleeve in the disconnected state.

Example of implementing a technical solution

The tubular joints of the insert pipe sections 1, 2, in particular flexible flue gas pipes, are alternately provided with end telescopically insertable inner necks 3 with locking pins 4 and outer necks 5 provided with inner round grooves 6, 7, the first inner round grooves 6 are provided with at least one guide groove 8 for the locking pin 4.

On the sides of this guide groove 8, at least one imprinted tooth 9 is arranged in the first inner round groove 6, which can be overcome in one direction by the movement of the locking pin 4 in this groove 6.

The locking pin 4 is formed, for example, in the mass of the inner neck 3 by a sealed ball, a raised rivet, etc.

The second inner round groove 7 in the outer neck 5 is generally provided with a round seal 10 of a suitable design (Fig. 6).

Optionally, the pipe connection includes a plastic locking sleeve 11 provided with edge flanges 12 in the form of a series of teeth 13. It is further provided with tensioning elements, for example of the hook-hole type, as shown in Fig. 9.

The tubular connection of the insert tube sections 1, 2 is achieved by successively telescopically inserting the inner neck 3 into the outer neck 5, first ensuring that the locking pin 4 first passes through the guide groove 8 up to the level of the first inner round groove 6 and then by turning the compartments 1 relative to each other. 2, resp. of the neck 3, 5, the locking pin 4 overcomes at least one pressed tooth 9 in this first inner groove 6 of the outer neck 5. The construction of the tooth 9 prevents the backward movement of the locking pin 4. A so-called bayonet connection is formed.

Further securing and strengthening of the pipe connection assembly of the liner pipe sections 1, 2 is provided by a closed locking sleeve JT, with its edge flanges 12 with teeth 13, as shown in detail in Figures 6 and 7.

Claims (2)

CLAIMS FOR PROTECTION Pipe connection of liner pipe sections (1, 2), in particular flexible flue gas pipes, characterized in that the liner pipe sections (1, 2) are alternately provided with end telescopically insertable inner necks (3) with locking pins. (4) and outer necks (5) provided with inner circular grooves (6, 7), the first inner circular grooves (6) being provided with at least one guide groove (8) for the locking pin (4), on the sides of which there is a first inner at least one imprinted tooth (9) is arranged in the circular groove (6), which can be overcome in one direction by the movement of the locking pin (9) in this groove (6). -2CZ 30002 UI Pipe connection according to Claim 1, characterized in that the connection of the liner pipe sections (1, 2) is surrounded by a safety sleeve (11).