RU153250U1 - MODULAR DEVICE FOR CONNECTING MULTILAYER PIPES, FITTING WELDING TOOL, ADAPTER WELDING TOOL AND WELDING ADAPTER FITTING - Google Patents

Abstract

1. A modular device for connecting at least two end sections of a multilayer pipe or at least one end section of a multilayer pipe with at least one end section of a single layer pipe or one functional device of a piping system, the components of which are made of polymers by injection molding or molding represents at least one fitting, including at least two unified connecting elements located at the end sections of the fitting, and at least two adapters, each of which is made in the form of a monolithic, or composite, or assembly element, and with one part, corresponding to the connecting element, is attached to the fitting, and the other part through the mounting unit to the end section of the multilayer pipe, or the end a section of a single-layer pipe, or a functional device of a pipeline system, or another fitting, or another adapter. 2. The modular device according to claim 1, wherein the polymers are selected from the same polymeric material as the pipe. The modular device according to claim 1, wherein the polyolefin polymer is selected as the polymer. A modular device according to claim 1, in which polyethylene of increased heat resistance is selected as polymers. The modular device according to claim 1, wherein the polymers selected are a polymer from the group consisting of: polyethylene, polyethylene compounds, polyethylene copolymers, ethylene-octene copolymers, ethylene-octene-1 copolymer, polypropylene, polypropylene compounds, polypropylene copolymers, compounds and compositions based on polypropylene and polyethylene. 6. The modular device according to claim

Description

FIELD OF TECHNOLOGY

The utility model relates to the field of joining multilayer composite pipes consisting of three or more layers containing the outer and inner layers of a thermoplastic polymer belonging to the class of polyolefins, and including a barrier layer of a metal or oxygen-tight polymer by diffusion and

Electrofusion welding using manual welding machines and welding machines with a mechanical, electric or hydraulic drive, or joining multilayer composite pipes with single-layer polymer and metal pipes, or multilayer composite pipes of various designs or made of various materials.

Preferably for joining multilayer composite pipes of the type PERT-Al-PERT, PE-Al-PE, PERT-EVON-PERT, PERT-EVAL-PERT, PE-EVON-PE, PE-EVAL-PE, PPR-AL-PPR, PPR -AL-PERT, PPR-FG-PPR, PPR-EVON-PPR, PPR-EVAL-PPR.

The preferred field of application is the connection of pipelines of cold and hot water supply systems, radiator and underfloor heating, panel heating and air conditioning, ceiling cooling, gas supply, snow melting and anti-icing systems, geothermal and low potential heat utilization systems, fire water supply systems, sprinkler fire extinguishing systems, technological pipelines in industry and transport. Other applications include connecting pipelines for transporting gases, liquids, and suspensions.

BACKGROUND

Manual welding machines and welding machines with mechanical, electric or hydraulic drives for connecting polymer pipes by diffusion and electrofusion welding methods using polymer fittings are well known, are described in large numbers in the literature, and are currently standard devices, for example, welding machines and machines from OMISA Srl (http://www.omisa.it)

Known devices for joining multilayer composite pipes by diffusion welding (RU 2380603 C2 from 23.09.2008, F16L 13/00; RU 85604 U1 from 08/10/2009, F16L 13/00; RU 119839 U1 from 10.06.2011, F16L 13/00, B82B 1/00), which use standard manual welding machines or mechanical and hydraulic welding machines to melt the surfaces of the fitting and pipe, for example,

http://www.omisa.it/prodotti/polifasori-manuali/ or http://www.z-svarka.ru/index/catalogue/showitem.php?id=87.

A device for connecting multilayer composite pipes by the method of electrofusion (electrofusion) welding (RU 93127 U1 from 01/14/2010, F16L 13/00; RU 119839 U1 from 10.06.2011, F16L 13/00, B82B 1/00), in which for melting pipe and fitting surfaces, embedded heating elements are used that are built into the fitting body; standard welding machines for electrofusion welding, for example, a welding machine from Eurostandard Spa (Italy) (http://www.adrt.ru/catalog, are used as a current source for embedded heating elements) / svarka-trub-elekrromuftami-apparaty /).

Closest to the proposed device are devices for connecting multilayer composite pipes: RU 2380603 C2 from 09/23/2008, F16L 13/00; RU 119839 U1 dated 06/10/2011, F16L 13/00, B82B 1/00, which are characterized by the fact that multilayer composite pipes are connected through fittings (couplings) by welding, while welding is performed simultaneously on the outer, inner surfaces of the pipe, for this simultaneously preliminarily melt the outer, inner surfaces in the final section of the pipe and the inner surfaces of the coupling connected to the pipe.

These devices are characterized by the simplicity of connecting multilayer composite pipes, provide reliable connection of multilayer composite pipes during their long-term operation under the influence of dynamic and thermal loads of liquids and gases.

However, in these devices it is impossible to control the quality of welding of the inner layer, and with adverse combinations of tolerances on the dimensions of the pipe and fitting, it is possible to form a poor connection on the side of the inner layer of the pipe, or an excess amount of polymer melt can be squeezed out during welding, which can lead to a decrease in the flow area of the fitting, and as a result to increase its hydraulic resistance.

Another disadvantage of these devices is that with their help it is practically impossible to connect pipelines of various designs or pipelines made of various materials.

Another drawback of these devices is that to solve various practical problems requires a large assortment of fittings, reaching up to several hundred elements. This complicates the design and installation of piping systems.

The objective of this utility model is: increasing the reliability of the connection of multilayer composite pipes, reducing the risk of reducing the bore of the connection when they are connected, expanding the range of applications of the device for connecting multilayer pipes, reducing the required working range of devices for connecting multilayer pipes DISCLOSURE OF THE USEFUL MODEL

The problem is solved using a group of devices:

- A modular device for connecting multilayer pipes;

- Welding fitting tool;

- Welding tool adapter;

- Welding adapter.

Modular device for connecting multilayer pipes

The problem is solved in that the modular device for connecting at least two end sections of multilayer pipes, or at least one end section of a multilayer pipe with at least one end section of a single layer pipe, or one functional device of a piping system made of polymers by injection molding under pressure, or molding, is at least one fitting comprising at least two unified connecting elements located on the final the fitting of the fitting, and at least two adapters, each of which is made in the form of a monolithic or composite or assembly element, and one part, corresponding to the connecting element, is attached to the fitting, and the other part through the mounting unit to the end section of the multilayer pipe, or the end section of a single-layer pipe, or the functional device of the piping system, or another fitting, or another adapter.

In fact, a modular device for connecting multilayer pipes is a constructor consisting of many fittings and many adapters, which, with one part (side) corresponding to the connecting element of the fitting, are connected to fittings through a unified connection, and the other part (side) to various such as pipes (composite, multi-layer, single-layer), or other fittings or adapters, or various functional devices of the piping system: radiators, convectors, plumbing fixtures vaniyu, manifolds, valves, pumps, valves, mixers, stop valves, control valves, protective valves pipeline safety valve, a measuring pipeline valves, distributive mixing pipeline valves or other devices pipeline systems.

The modular device can be made of various polymers:

These may be polymers selected from the same polymeric material as the pipe.

These may be polymers selected from polyolefin polymers.

These can be polymers selected from the group including: polyethylene, polyethylene compounds, polyethylene copolymers, ethylene-octene copolymers, ethylene-octene-1 copolymer, polypropylene, polypropylene compounds, polypropylene copolymers, compounds and compositions based on polypropylene and polyethylene.

One of the most preferred polymers from which the modular device can be made is high temperature resistant polyethylene.

Polyethylene of high temperature resistance is designated as PE-RT (Polyethylene of Raised Temperature resistance), it is represented on the market by polyethylene of high temperature resistance of various types: type I, type II, type III, and the most common brands Dowlex 2344, Dowlex 2388 - manufacturer Dow Chemical; DX800 - manufacturer of SK Corporation; XP9000 - manufacturer Daelim; SP980, SP988 - manufacturer of LG Chem; ELTEX TUB220-RT - manufacturer of INEOS, XRT 70 - manufacturer of TOTAL.

The modular device can also be made of polymers selected from the group consisting of: polysulfone, polyethersulfone, polyphenylsulfone, polyphenylene sulfide, polyarylene sulfone, polyarylethersulfone, floor and imid, polyalkylene sulfone. polypyromellitimide, polyetheretherketone, polyamidimide, polyetherimide.

This group of heat-resistant polymers is also widely represented on the market, for example, by Solvay Advanced Polymers products: ACUDEL 22000, UDEL P-1700, RADEL R; BASF's Ultrason product line, and a number of other products from various companies in the polymer industry:

One of the promising materials for the manufacture of the Modular device may be the polymers obtained by IBM by combining paraformaldehyde and 4,4-oxydianiline.

Moreover, the polymers used for the manufacture of the Modular device may not contain stabilizing additives.

Moreover, the polymers used for the manufacture of the Modular device may contain an effective amount of at least one stabilizing additive selected from the group including: thermostabilizer, antioxidant, radical scavenger, aging inhibitor, light stabilizer, UV stabilizer, flame retardant. By effective amount is meant the amount at which the optimal functional effect of the stabilizing additive is achieved. Usually, data on the effective concentration of stabilizing additives is contained in the data sheet of these additives.

Moreover, the polymers used for the manufacture of the Modular device may not contain dispersed mineral fillers, nanoscale mineral fillers, nanoparticles.

Moreover, the polymers used for the manufacture of the Modular device may contain at least one mineral particulate filler in an amount of from 0.1 to 45 wt.%, Which is selected from the group including talc, mica, calcium carbonate, kaolin, clay, magnesium hydroxide, calcium silicate, carbon black, graphite, boron nitride, molybdenum disulfide, aluminum nitride, aluminum oxide, aluminum hydroxide, aluminum powder, aluminum fibers, aluminum flakes, iron powder, iron fibers, iron flakes, copper powder, ednye fiber, copper flakes, graphite fibers, metallized glass fibers, metallized fibers basalt, silica, diatomite, titanium oxide, iron oxide, pumice, antimony oxide, dolomite, dawsonite, zeolitic filler, vermiculite, montmorillonite and hydrated alumina.

Moreover, the polymers used for the manufacture of the Modular device may not contain mineral nanoscale fillers, which are obtained from intercalated clays, expanded clays, layered clays, layered silicates, kaolin, calcium carbonate, calcium phosphate, silicon carbide, silica, boron nitride, molybdenum disulfide aluminum nitride, aluminum oxide, aluminum hydroxide, and carbon.

Moreover, the polymers used for the manufacture of the Modular device may contain nanoparticles selected from the group including: fullerene, graphene, carbon nanotubes, nanotubes obtained from synthetic polymers.

Moreover, the fitting and adapters of the Modular device can be made of the same polymer.

Moreover, the fitting, adapters, components, assembly and embedded elements of the adapter of the Modular device can be made of different polymers or different compositions of the same polymer, or contain various combinations of stabilizing additives, mineral dispersed fillers, mineral nanoscale fillers, nanoparticles.

According to the functional purpose, the fitting of the Modular device can be made in the form of: couplings, elbows, tees, crosspieces, water sockets, pneumatic sockets, mixers, manifolds, valves, pumps, valves, shutoff valves, control valves, protective valves, safety valves, measuring pipe fittings, distribution and mixing pipe fittings.

One of the most important aspects of this utility model is the unification of the fitting of the fitting and, accordingly, the adapter mate.

Moreover, the connecting element of the fitting and the corresponding part of the adapter of the Modular device can be unified for one pipe size.

The most preferred option is when the connecting element of the fitting and the corresponding counterpart of the adapter of the Modular device are unified for at least two adjacent pipe sizes.

Due to the unification of the connecting element of the fitting, the total number of elements of the connecting system can be reduced by two to three times. This greatly facilitates the work of designers, as to solve problems you have to operate with a much smaller number of elements. This reduces the cost of installers, as for work there is no need to have a huge assortment of connecting elements of the pipeline system. And of course, this facilitates the creation of new fitting manufactures, as this requires the manufacture of a significantly smaller number of molds, respectively, investment costs are reduced, and as a result, cost is reduced by reducing the depreciation component.

For example, only on the basis of one fitting-coupling with connecting elements unified for two adjacent pipe sizes of 16 and 20 mm. you can build many connecting devices for the pipeline system, these are: equal-passage couplings 16 × 16, 20 × 20, adapter couplings 16 × 20, 16 × 1/2 ″, 16 × 3/4 ″, 20 × 1/2 ″, 20 × 3/4 ″, etc.

Structurally, the connecting element of the fitting of the Modular device can be located on the inner surface of the fitting, respectively, the part of the adapter that responds to the connecting element of the fitting is located on the outer surface of the adapter; or the fitting connecting element may be located on the outer surface of the fitting, respectively, the adapter portion corresponding to the fitting connecting element is located on the inner surface of the adapter.

Moreover, the connecting element of the fitting of the Modular device and the corresponding part of the adapter can be made in the form of a threaded connection.

Moreover, the connecting element of the fitting of the Modular device and the corresponding part of the adapter can be made in the form of a flange connection.

Moreover, the connecting element of the fitting of the Modular device and the corresponding part of the adapter can be made in the form of a snap or lock connection.

Moreover, the connecting element of the fitting of the Modular device and the corresponding part of the adapter can be made in the form of a welded joint.

The execution of the connecting element of the Modular device in the form of a welded joint is one of the preferred embodiments of the present utility model.

Moreover, the welded connection of the connecting element of the fitting and the adapter part mating to it can be formed by corresponding cylindrical surfaces, or surfaces in the form of a truncated cone, or surfaces in the form of a truncated sphere, or surfaces including alternating sections of surfaces selected from the group of: cylindrical surfaces, truncated conical surfaces truncated spherical surfaces.

Moreover, the fitting connecting element and / or the adapter part mating to the connecting element may not contain embedded heating elements.

The fitting can be connected to the adapter by electrofusion welding. In this case, at least one fitting connecting element and / or the corresponding adapter part corresponding to the fitting connecting element contains at least one embedded heating element made in the form of a spiral or tape, from a material with low electrical conductivity, or from a material selected from a group including: nickel alloys, chromium alloys, iron alloys; nichrome, fechral, carbon, graphite, silicon carbide.

To melt surfaces during welding of the fitting of the fitting and the adapter portion responding to the fitting of the fitting, at least one fitting of the fitting and / or the corresponding portion of the adapter responding to the fitting of the fitting may comprise an embedded heating element in the form of an inductor.

Another part of the adapter contains a mounting unit that is designed to connect the adapter to the end section of the multilayer pipe, or the end section of the single layer pipe, or the functional device of the piping system, or another fitting, or another adapter. Moreover, the mounting unit of the adapter can be made in the form of a welded joint, or a threaded joint, or a flange joint, or a snap joint, or a locking or collet joint, or a press joint, or a crimp joint.

For connecting to functional devices containing a threaded or flange connection, the adapter mounting assembly may include a threaded insert or a flange embedded in metal or polymer.

To connect with metal pipelines, the adapter mounting unit may include a mortgage element made in the form of a pipe made of metals and their alloys selected from the group: steel, copper, aluminum, the final section of which may or may not contain a thread.

For connection with single-layer polymer pipes, the adapter mounting unit can be made in the form of a sleeve welding connection including an internal welding socket to accommodate the final section of a single-layer polymer pipe and a depth of at least 10% of the outer diameter of the pipe, made in the form of a coaxial cylinder pipe, or a truncated cone, the basis of which is the outer end part of the mounting unit, or alternating sections of the cylinders and / or truncated cones. Moreover, the mounting unit of the adapter may not contain embedded heating elements. Moreover, the mounting unit of the adapter may contain at least one embedded heating element made in the form of a spiral or tape, from a material with low electrical conductivity, or from a material selected from the group including: nickel alloys, chromium alloys, iron alloys; nichrome, fechral, carbon, graphite, silicon carbide. The mounting unit may also contain a embedded heating element in the form of an inductor.

For connection with composite and multilayer pipes, the adapter mounting unit can be made in the form of a sleeve, which includes an inner ring socket for accommodating a multilayer pipe located in the adapter body coaxially to the pipe, the outer wall of which covers the outer surface of the pipe, and the inner wall of the annular socket the inner surface of the pipe.

Moreover, the depth of the inner wall of the annular socket of the adapter mounting unit is at least 2.5% of the pipe wall thickness.

Moreover, the depth of the inner wall of the annular socket of the adapter mounting unit is less than, or equal to, or greater than the depth of the outer wall of the annular socket of the adapter mounting unit.

Moreover, the inner surface of the inner wall of the annular socket of the adapter mounting assembly may be a cylindrical surface coaxial to the pipe, or a surface in the form of a truncated cone, the base of which is the outer end surface of the inner wall of the annular socket, or alternating sections of cylindrical surfaces and / or surfaces in the form of truncated cones .

Moreover, the inner surface of the outer wall of the annular socket of the adapter mounting unit may be a cylindrical surface coaxial to the pipe, or a surface in the form of a truncated cone, the basis of which is the outer end surface of the outer wall of the annular socket, or alternating sections of cylindrical surfaces and / or surfaces in the form of truncated cones .

The annular socket of the adapter mounting unit may not contain buffer cavities and / or anti-compression holes.

One of the preferred options is when the annular socket of the adapter mounting unit includes at least one buffer cavity, which is formed by coaxially extending the annular socket into the interior of the adapter mounting unit and separated from the ring socket by a solid or intermittent radial collar located on the inner surface of the outer and / or the inner wall of the annular socket, or separated from the annular socket by at least one protrusion located on the inner surface of the outer and / or the inner wall of the annular nest, or separated from the annular nest by reducing its bore from the side of the inner surface of the inner and / or outer wall of the annular nest.

Another preferred embodiment is when the annular socket of the adapter mounting unit includes at least one buffer cavity formed on the inner surface of the inner and / or outer wall of the annular socket in the form of a coaxial annular slot in a groove or groove with a constant cross-section, or a section decreasing in the direction from the end of the corresponding wall of the annular socket into the depth of the annular socket of the adapter mounting unit, and from 5 to 100% of the depth of the corresponding wall of the annular socket.

Another option is the option when the annular socket of the adapter mounting unit includes at least one buffer cavity formed on the inner surface of the inner and / or outer wall of the annular socket in the form of a radial groove.

In order to remove excess air and / or melt from the space between the pipe and the annular socket during the connection of the fastening unit to the pipe, the ring socket of the adapter mounting unit may contain at least one anti-compression hole connecting the inner and outer surfaces of the outer wall of the annular socket.

To remove excess air and / or melt from the space between the pipe and the buffer cavity of the annular receptacle during connection of the fastener assembly with the pipe, the buffer cavity of the annular receptacle of the adapter attachment may contain at least one anti-compression hole connecting the buffer cavity and the outer surface of the outer wall of the annular receptacle.

To connect the same or different fittings of the Modular device to each other, the adapter mounting assembly may include a mating part of the fitting connecting element.

To connect the adapters of the Modular device to each other, the adapter mounting assembly may include a counterpart of another adapter.

The adapter mount may not contain embedded heating elements.

To connect the adapter of the Modular device to the pipe by the method of electrofusion welding, the mounting unit of the adapter may contain at least one embedded heating element made in the form of a spiral or tape, from a material with low electrical conductivity, or from a material selected from the group including: nickel alloys, alloys chromium, iron alloys; nichrome, fechral, carbon, graphite, silicon carbide. The adapter mounting assembly may comprise at least one embedded heating element in the form of an inductor.

The adapter mounting assembly may include at least one heating element made in a single unit for simultaneously melting the inner and outer surfaces of the annular socket.

The adapter mounting assembly may include at least one heating element made in separate blocks for differential melting of the inner and outer surfaces of the annular socket.

One of the promising options for realizing this utility model is the one in which the adapter mount assembly includes a mortgage element made in the form of a welded joint, and made of a polymer other than the polymer from which the adapter mount assembly is made.

An example of such a solution can be a system in which the fitting and the adapter body are made of a durable heat-resistant, but not welded polymer such as polyphenylsulfone, the connecting element of the fitting and the corresponding adapter part to it are made in the form of a snap-in, or lock or threaded connection, and the embedded element is made of weldable polymer such as high temperature resistant polyethylene (PE-RT polyethylene) or polypropylene or its copolymer. This solution combines a reliable welded connection with a pipe and ease of connecting the adapter to the fitting. Another example of the implementation of this option is an option designed to connect composite or multilayer pipelines made of various polymers, in this embodiment, for example, the fitting and adapter body are made of high-temperature resistant polyethylene (PE-RT), and the embedded welding element is made of a random copolymer of polypropylene (PP-R). This solution allows you to connect metal-plastic pipes (PERT-AL-PERT) or pipes with an EVON barrier layer (PERT-EVON-PERT) with polypropylene pipes reinforced with aluminum (PPR-AL-PPR) or fiberglass (PPR-FG-PPR).

The embedded element in the form of a welding element can be installed during molding of the adapter on standard injection molding machines (thermoplastics) or can be made simultaneously with the adapter on injection molding machines with two-component injection molding.

Moreover, the embedded element of the adapter mounting unit can be made in the form of a coupling, which includes an inner annular socket for accommodating a multilayer pipe located in the housing of the embedded element coaxially to the pipe, the outer wall of the annular socket covers the outer surface of the pipe, and the inner wall of the annular socket the inner surface of the pipe.

The depth of the inner wall of the annular socket of the embedded element of the adapter mounting unit may be at least 2.5% of the wall thickness.

The depth of the inner wall of the annular socket of the embedded element of the adapter mounting unit is less than, equal to, or greater than the depth of the outer wall of the annular socket of the embedded element of the adapter fixing unit.

Moreover, the inner surface of the inner wall of the annular socket of the embedded element of the adapter mounting unit may be a cylindrical surface coaxial to the pipe, or a surface in the form of a truncated cone, the base of which is the outer end surface of the annular socket, or alternating sections of cylindrical surfaces and / or surfaces in the form of truncated cones .

Moreover, the inner surface of the outer wall of the annular socket of the embedded element of the adapter mounting unit may be a cylindrical surface coaxial to the pipe, or a surface in the form of a truncated cone, the base of which is the outer end surface of the annular socket, or alternating sections of cylindrical surfaces and / or surfaces in the form of truncated cones.

The ring socket of the embedded element of the adapter mounting unit may not contain buffer cavities and anti-compression holes.

One of the preferred variants of the present utility model is the one in which the annular socket of the embedded element of the adapter mounting unit includes at least one buffer cavity which is formed by coaxially extending the annular socket into the depth of the embedded element of the adapter mounting unit and separated from the annular socket by a solid or intermittent radial collar, located on the inner surface of the outer and / or inner wall of the annular socket, or at least one separate from the annular socket a protrusion located on the inner surface of the outer and / or inner wall of the annular socket, or separated from the annular socket by reducing its bore from the side of the inner surface of the inner and / or outer wall of the annular socket.

Another preferred embodiment of the present utility model is the one in which the annular socket of the embedded element of the adapter mounting unit includes at least one buffer cavity formed on the inner surface of the inner and / or outer wall of the annular socket in the form of a groove or groove with a constant cross section, coaxial to the annular socket, or a section decreasing in the direction from the end face of the corresponding wall of the annular socket into the depth of the annular socket of the embedded element of the adapter mounting unit, and length from 5 to 100% of the depth of the corresponding wall of the annular socket.

Another embodiment of the present utility model is a variant in which the annular socket of the embedded element of the adapter mounting unit includes at least one buffer cavity formed on the inner surface and / or external wall of the annular socket of the embedded element in the form of a radial groove.

To remove excess air and / or melt from the space between the pipe and the annular socket of the embedded element of the adapter mounting unit during the connection of the fixing unit to the pipe, the embedded element of the adapter mounting unit may contain at least one anti-compression hole connecting the inner surface of the annular socket of the embedded element and the outer surface the ring socket of the embedded element or the outer surface of the mounting unit of the adapter.

To remove excess air and / or melt from the space between the pipe and the buffer cavity of the annular socket of the embedded element of the adapter mounting unit during the connection of the fixing unit to the pipe, the buffer cavity of the annular socket of the embedded element of the adapter fixing unit may contain at least one anti-compression hole connecting the buffer cavity and the outer surface of the annular socket of the embedded element or the outer surface of the mounting unit of the adapter.

The embedded element of the adapter mounting unit may not contain embedded heating elements.

One of the promising options for this model is the one in which the embedded element of the adapter mounting unit contains at least one embedded heating element, made in the form of a spiral or tape, from a material with low electrical conductivity, or from a material selected from the group including: nickel alloys , chromium alloys, iron alloys; nichrome, fechral, carbon, graphite, silicon carbide.

Also, the embedded element of the adapter mounting unit may contain the embedded element in the form of an inductor.

Moreover, the embedded element of the mounting unit of the adapter may contain at least one embedded heating element made as a single unit for simultaneous melting of the inner and outer surfaces of the annular socket.

Moreover, the embedded element of the mounting unit of the adapter may contain at least one embedded heating element made of separate blocks for differential melting of the inner and outer surfaces of the annular socket.

Welding tool fitting

The problem is solved in that the welding tool of the fitting for melting the surfaces of the connecting element of the fitting of the modular device and the surface of the adapter responding to the connecting element of the fitting, made of metal or ceramic, includes: a heating head of the internal surfaces that is a monolithic or hollow rod with a height not less than the depth of the connecting element of the fitting or mating adapter and the outer surface of the corresponding inner surface of the connecting e ementa fitting or the inner surface of the mating part of the adapter, which is fixed on a flat base, or formed integrally with a flat base, comprising fixing elements to a heating plate of the welding apparatus; and a heating head of the outer surfaces, which is a sleeve with a depth not less than the depth of the connecting element of the fitting or the adapter mating part, the inner surface of which corresponds to the outer surface of the fitting connecting element, or the external surface of the adapter mating part, which is fixed on a flat base, or is made integral with a flat base, including fastening elements to the heating plate of the welding machine.

The heating heads of the external and internal surfaces, depending on which surface the fitting's connecting element is located on, and the corresponding adapter mating part can be used in various ways. For example, if the fitting connecting element is located on the inner surface of the fitting, then in this case, the heating head of the outer surfaces is used to melt the surface of the adapter counterpart, and the heating head of the inner surface is used to melt the inner surface of the fitting of the fitting. Conversely, in the case where the fitting connecting element is located on the outside of the fitting, the heating head of the outer surfaces is used to melt the surfaces of the fitting of the fitting, and the heating head of the inner surfaces is used to melt the surfaces of the adapter mating part.

Moreover, the outer surface of the heating head of the inner surfaces is made coaxial to the connecting element of the fitting or the adapter counterpart in the form of a cylindrical surface, or a surface in the form of a truncated cone, the base of which is the transverse plane of a flat base, or a surface in the form of a truncated sphere, or alternating sections of cylindrical surfaces and / or surfaces in the form of truncated cones and / or surfaces in the form of a truncated sphere.

Moreover, the inner surface of the heating head of the outer surfaces is made coaxially to the connecting element of the fitting or the adapter counterpart in the form of a cylindrical surface, or a surface in the form of a truncated cone, the basis of which is the outer end plane of the heating head of the outer surfaces, or a surface in the form of a truncated sphere, or alternating sections of cylindrical surfaces and / or surfaces in the form of truncated cones, and / or surfaces in the form of a truncated sphere.

Moreover, the heating head of the outer surfaces and / or the heating head of the inner surfaces may not contain anti-compression holes connecting the inner and outer surfaces of the heating heads and / or coaxial to the heads of the longitudinal grooves and grooves.

Moreover, the heating head of the outer surfaces and / or the heating head of the inner surfaces may contain at least one anti-compression hole connecting the inner and outer surfaces of the heating heads, and / or at least one longitudinal groove or groove coaxial to the heads.

The heating head of the outer surfaces and / or the heating head of the inner surfaces can be made of ceramic or metal selected from the group: copper, copper alloys, aluminum, aluminum alloys, steel, steel alloys.

Moreover, a release coating may be applied to the surface of the heating head of the outer surfaces and / or the heating head of the inner surfaces.

Moreover, the release coating can be made of ceramic, or a heat-resistant polymer selected from the group: polytetrafluoroethylene, polyimide. Polytetrafluoroethylene in the market is known under the trade names fluoroplast-4, or teflon.

Moreover, the release coating may contain mineral fillers selected from the group: carbon, molybdenum dioxide.

Adapter welding tool

The problem is solved in that the welding tool of the adapter for melting the surfaces of the annular socket of the mounting unit of the adapter and the surfaces of the final section of the multilayer pipe made of metal or ceramic includes: a heating head of the pipe including: a short pipe with a length and inner diameter corresponding to the length and outer diameter of the heated end portion of the outer the surface of the pipe, which is mounted on a flat base or is made integral with a flat base including fasteners elements for heating plate welding machine, and a hollow or solid rod disposed coaxially on the same plane inside the tube base, or executed monolithically with them, with a length and diameter corresponding to the inner diameter and the length of the heated end section of the inner surface of the tube; and a heating head of the surface of the annular socket of the adapter mounting unit including a sleeve that is mounted on a flat base, or made integral with a flat base including fasteners for the heating plate of the welding machine, the outer surface of which is designed to melt the inner surface of the outer wall of the annular socket, and the inner surface of which is designed for melting the inner surface of the inner wall of the annular socket.

Moreover, the inner surface of the tube and / or the outer surface of the monolithic or hollow rod of the heating head of the pipe can be made coaxially to the pipe in the form of cylindrical surfaces, or surfaces in the form of a truncated cone, the base of which is a cross section of the flat base of the heating head of the pipe, or alternating sections of cylindrical surfaces and / or surfaces in the form of truncated cones.

Moreover, the inner and outer surfaces of the sleeve of the heating head of the annular socket of the adapter mounting unit are made in the form of coaxial annular nests of cylindrical surfaces, or surfaces in the form of a truncated cone, the basis of which is a cross section of the flat base of the heating head, or alternating sections of cylindrical surfaces and / or surfaces in in the form of truncated cones.

Moreover, the heating head of the pipe and / or the heating head of the annular groove of the adapter mounting assembly may not contain anti-compression holes, and / or coaxial heads of the longitudinal grooves and grooves, and / or buffer cavities.

A preferred embodiment of the present utility model is one in which the heating head of the pipe and / or the heating head of the annular groove of the adapter mounting assembly comprise at least one anti-compression hole connecting the inner and outer surfaces of the heating head and / or at least one longitudinal groove coaxial to the heads and the groove.

Another preferred embodiment of the present utility model, which prevents the occurrence of compression phenomena when the pipe is inserted into the heating head, is an embodiment in which the heating head of the pipe comprises a buffer cavity formed in the base of the pipe head in the form of an annular groove with a distance between the walls coaxial to the pipe head and smaller than the distance between the inner surface of the tube and the outer surface of the rod, which includes at least one anti-compression hole connecting the buffer hydrochloric cavity with the outer tube surface.

The heating head of the pipe and / or the heating head of the annular groove of the adapter mounting unit can be made of ceramic or metal selected from the group: copper, copper alloys, aluminum, aluminum alloys, steel, steel alloys.

Moreover, a release coating can be applied to the surface of the pipe heating head and / or the heating head of the annular groove of the adapter mounting assembly.

Moreover, the release coating of the heating heads of the pipe and the annular groove can be made of ceramic, or a heat-resistant polymer selected from the group: polytetrafluoroethylene, polyimide.

Moreover, the release coating of the heating heads of the pipe and the annular groove may contain mineral fillers selected from the group: carbon, molybdenum dioxide.

Adapter welding fixture

The problem is solved in that the adapter’s welding fixture which is designed to install the adapter with a mounting unit in the form of an annular groove or with an embedded element in the form of an annular groove on the heating head and remove it after heating, and to prevent deformation of the inner wall of the annular socket during heating and welding of the adapter with a multilayer pipe made of metal or heat-resistant polymer, and which is a rod mounted on the handle located inside the adapter, and fixed a handle or rod clamp adapter.

The need for adapter welding is primarily due to the ease of installation and removal of the adapter from the heating head. And it can be used both for adapters with a mounting unit in the form of an annular groove or a mortgage element in the form of an annular groove, and for other adapters described in the Modular device for connecting multilayer pipes.

Another important aspect of the use of a welding fixture is that, thanks to the modular design of the Modular device for connecting multilayer pipes, it is possible to control the welding process of the inner layer of the pipe with the adapter. The adapter is mounted on the rod of the welding fixture in such a way that the rod is located at least along the entire length of the adapter's bore, so that the rod of the welding fixture supports the inner wall of the annular socket of the adapter or adapter insert. During the installation of the adapter on a heated heating head and during the combination of the molten surfaces of the annular groove of the adapter or embedded element with the molten surfaces of the final section of the composite or multilayer pipe, the rod prevents deformation of the inner wall of the annular socket. In this case, in the event of excess melt from the welded joint, the melt spreads between the surface of the rod of the welding fixture and the inner surface of the pipe, thereby preventing uncontrolled leakage of excess melt into the adapter bore or the inner cavity of the pipe. This eliminates the appearance of melt streaks that reduce the adapter cross section.

Moreover, the rod can be made monolithic.

Moreover, the rod and / or handle can be made hollow.

One of the promising options for this utility model is the one in which inside the hollow handle and hollow rod, the end portion of which is divided into at least two longitudinal segments, there is a screw with the head of the welding tool coming out from the outside of the handle and with a nut screwed onto it made in the form a truncated cone and a diameter in its largest part not exceeding the internal passage diameter of the adapter. Thanks to this implementation of the present utility model, the welding fixture, in addition to the described functions, allows the inner wall of the annular socket of the adapter or embedded element to be pressed against the inner wall of the composite or multilayer pipe. This happens as follows, after combining the adapter with the pipe, twisting the screw head the conical nut expands the segments located on the terminal end of the shaft, which in turn press the inner wall of the annular socket to the inner wall of the pipe.

Moreover, the rod can be made with an outer diameter corresponding to from 80 to 100% of the passage diameter of one adapter size, and at least not shorter than the distance from the extreme end part of the adapter mating part and the extreme end part of the inner wall of the annular socket of the adapter mounting unit or the extreme end of the inner wall of the embedded element of the adapter mounting unit in the form of an annular socket.

To reduce the range of welding fixtures, the rod can be made in the form of at least two coaxial monolithic or hollow cylinders following one after the other with outer diameters corresponding to 80 to 100% bore diameters of at least two adjacent adapter sizes.

Moreover, the rod can be made of metal selected from the group: iron and its alloys, aluminum and its alloys, copper and its alloys.

Moreover, the rod can be made of heat-resistant polymer with a temperature of thermal deformation above 230C °.

Moreover, the rod can be made of a polymer selected from the group consisting of polysulfone, polyethersulfone, polyphenylsulfone, polyphenylene sulfide, polyarylene sulfone, polyarylethersulfone, polyalkylene sulfone, polytetrafluoroethylene, polyamide, polyimide, polyalkylene sulfide, polypyromedyl ether, polypyromedyl ether.

According to the present utility model, the core of the welding fixture can be made of ceramic.

On the surface of the rod according to this utility model, a release coating can be applied.

Moreover, the release coating can be made of ceramic, or a heat-resistant polymer selected from the group: polytetrafluoroethylene, polyimide.

Moreover, the release coating may contain mineral fillers selected from the group: carbon, molybdenum dioxide.

According to this useful adapter latch can be made in the form of a latch on the adapter housing, or a lock, or a spring-loaded clamp, or an eccentric clamp, or a collet clamp.

It should be noted that all real surfaces of the fitting and adapter may differ from those described taking into account molding tolerances, angles, chamfers, fillets, and taking into account molding tolerances, angles, chamfers, fillets should also be included in this utility model.

BRIEF DESCRIPTION OF THE DRAWINGS

In FIG. 1 shows a particular embodiment of a modular device including two adapters for connecting two adjacent diameters to multilayer pipes and a fitting in which the welded connecting elements are made in the form of a cylindrical surface on its inner surfaces and are unified for two adjacent pipe sizes.

In FIG. 2 shows a particular embodiment of a modular device, including an adapter for connecting multilayer pipes, an adapter for connecting to a single layer pipe, and a fitting in which welded connecting elements are made on its inner surfaces in the form of a surface of a truncated cone.

In FIG. Figure 3 shows a special case of a modular device, including an adapter with a threaded mounting unit, an adapter with a mounting unit including a mortgage element in the form of an annular socket and a fitting, the connecting elements of which are made on its inner surface in the form of a conical threaded connection.

In FIG. 4 shows particular cases of fitting a modular device with different surfaces of the connecting element.

In FIG. 5-6 show particular cases of the adapter of the modular device with different depths of the inner wall of the annular socket of the adapter mounting unit, and with different surfaces of the annular socket.

In FIG. 7 shows particular cases of the adapter of the modular device with various buffer cavities of the annular socket of the adapter mounting unit.

In FIG. 8 shows a particular case of an adapter of a modular device with a mounting unit for connection with another adapter.

In FIG. 9 shows a special case of the heating heads of the inner and outer surfaces of the welding tool of the fitting of the surface of which is made in the form of a surface of a truncated cone.

In FIG. 10-11 show special cases of using the welding tool of a fitting for heating the surfaces of the connecting elements of the fitting and the adapter mate located on different surfaces of the fitting and the adapter mate.

In FIG. 12 shows special cases of the heating head of the surface of the annular socket of the mounting unit of the welding tool of the adapter.

In FIG. 13 shows particular cases of the heating head of the pipe of the welding tool of the adapter.

In FIG. 14-15 show special cases of the welding fixture of the adapter.

In FIG. 16 shows a special case of the use of the adapter welding device during heating of the surfaces of the annular socket of the adapter mounting unit.

In FIG. 17 shows a special case of the use of the adapter welding fixture during the connection of the adapter to the pipe.

EXAMPLE OF IMPLEMENTATION OF A USEFUL MODEL

As shown in FIG. 1, A modular device consisting of fitting 1 with a connecting element 2 located on the inner surface of the fitting, a first adapter 3 with a part 4 corresponding to the connecting element of the fitting, with a mounting unit 5 including an annular socket 6 for connection with a multilayer pipe, and a second adapter 7 connected by welding on the one hand with a fitting, and on the other, with a multilayer pipe 8 through an annular socket covering the inner and outer surfaces of the end section of the pipe.

Another example is shown in FIG. 2, A modular device consisting of a fitting 1 with a connecting element 2 located on the outer surface of the fitting, a first adapter 3 with a part 4 corresponding to the connecting element of the fitting, with a mounting unit 5 including a welding socket 9 for connection to a single-layer pipe, and a second adapter 7 connected by welding on the one hand with a fitting, and on the other, with a multilayer pipe 8 through an annular socket covering the inner and outer surfaces of the end section of the pipe.

Another example is shown in FIG. 3, A modular device consisting of a fitting 1 with a connecting element 2 in the form of a tapered thread located on the inner surface of the fitting, the first adapter 3 with a part 4 corresponding to the connecting element of the fitting, with a fixing unit 5 including a mortgage element in the form of an annular socket 10 covering the inner and the outer surface of the end section of the pipe, and threaded to the fitting of the second adapter 7 with the mounting unit 12 in the form of a threaded connection for connection with the functional devices of the pipeline system we.

Other examples are shown in FIG. 7, in order to absorb excess melt and eliminate compression phenomena, the annular nests of the adapter of the modular device contain buffer cavities 13 and anti-compression holes 14, during welding of the adapter with the pipe, the generated excess melt and air from the welded joint are forced into the buffer cavities and anti-compression holes.

As shown in FIG. 9, A fitting welding tool for melting the surfaces of the fitting of the fitting and the adapter adapter mate, including a heating head of the outer surfaces 15 and a heating head of the inner surfaces 16, the heating surface of which is made in the form of a surface of a truncated cone.

Another example is shown in FIG. 10, A fitting welding tool comprising a heating head of the outer surfaces 15 fixed to a plate of the welding apparatus 17 melting a surface of the connecting element 2 located on the outer surface of the fitting; and a heating head of the inner surfaces 16 mounted on the plate of the welding machine, melting the inner surface of the mating adapter 4.

Another example is shown in FIG. 11, A fitting welding tool including a heating head of the outer surfaces 15 mounted on a plate of the welding machine 17 melting the surface of the adapter mating portion 4 located on the outer surface of the adapter; and a heating head of the inner surfaces 16 mounted on the plate of the welding machine, melting the surface of the fitting 2 of the fitting 2 located on the inner surface of the fitting.

As shown in FIG. 12-13, An adapter welding tool for melting the surfaces of the annular socket of the adapter mounting assembly and the surfaces of the end portion of the multilayer pipe includes a heating head of the annular socket 18 and a heating head of the pipe 19; in one embodiment, the heating head comprises a buffer cavity 20 formed in the base of the pipe head in the form of an annular groove that includes at least one anti-compression hole 21 connecting the buffer cavity to the outer surface of the heating head.

As shown in FIG. 14, The adapter adapter 22, which is designed to install the adapter with a mounting unit in the form of an annular groove or with an embedded element in the form of an annular groove on the heating head and remove it after heating, and to prevent deformation of the inner wall of the annular socket when heating and welding the adapter with a multilayer a pipe including a rod 24 mounted on the handle 23, and a latch 25.

Another example is shown in FIG. 15, A welding fixture of adapter 22, including a latch 25 mounted on a hollow handle 23, and a hollow rod 24 whose end portion is divided into at least two longitudinal segments; a screw 26 is located inside the handle and the rod with a head 27 of the welding fixture coming out from the outside of the handle and with a nut 28 screwed onto it and made in the form of a truncated cone and with a diameter in its largest part not exceeding the adapter's inner diameter.

Another example is shown in FIG. 16, The welding fixture of the adapter 22 with the adapter 3 mounted on it and held by the latch 25, prevents the deformation of the inner wall of the annular socket of the adapter heated by the heating head of the ring socket of the welding tool of the adapter 18 mounted on the plate of the welding machine 17; the end sections of the pipe 8 are melted by the heating head of the pipe of the welding tool of the adapter.

Another example is shown in FIG. 16, The welding fixture of the adapter 22 with the adapter 3 mounted on it and held against sliding by the latch 25 prevents deformation of the inner wall of the annular socket of the adapter of the heating ring head of the welding socket mounted on the plate of the welding machine 17.

Another example is shown in FIG. 17, The welding fixture of the adapter 22 with the adapter 3 mounted on it, which is held against sliding by the latch 25, prevents deformation of the inner wall of the ring socket of the adapter while aligning the ring socket of the adapter with the end portion of the pipe 8.

The device operates as follows:

The modular device is assembled and connected to the end sections of the pipe or the end section of the pipe and the functional device of the piping system in two stages: at the first stage, the end sections of the pipe are connected to adapters, at the second stage, adapters with attached end sections of the pipe and / or adapters, the mounting units of which are designed for connection with the functional devices of the pipeline system, are connected via connecting elements to the fitting of the modular device.

First step

The adapter 3 is mounted on the welding fixture of adapter 22 in such a way that the counterpart of adapter 4 is directed to the handle of the fixture 23 and is held by the latch 24. After that, the adapter fixed on the welding fixture with an annular socket 6 is combined with the heated heating head of the annular socket 18 fixed on the welding plate apparatus 17, while the rod 24 prevents deformation of the inner wall of the annular socket when combining the annular socket with a heating head. Then, the adapter mounted on the welding fixture and held by the fixture with the molten surfaces of the annular socket is combined with the surfaces of the final section of the multilayer pipe 8 melted by the heating head of the pipe 19 mounted on the plate of the welding machine, while the rod of the welding fixture prevents deformation of the inner wall of the annular socket. Excess air and melt is displaced into the buffer cavities 13 and anti-compression holes 14, and a part of the melt displaced from the side of the inner wall of the annular socket fills the space between the rod and the inner surface of the pipe, thereby reducing the adapter cross section. After cooling in natural conditions, a reliable one-piece connection of the adapter with a multilayer pipe is formed, and the welding fixture is removed from the adapter.

In the version of the adapter welding tool with an internal screw and a conical nut, there is an additional possibility of pressing the inner wall of the annular socket to the pipe. After combining the adapter’s annular socket with the molten end sections of the pipe, turning the head of the screw 27 of the screw 26, the nut 27 with the outer surface in the form of a truncated cone enters the final section of the rod 24 divided into at least two longitudinal segments and expands the walls of the terminal end section, which, in turn, , press the inner wall of the annular socket to the inner wall of the pipe. After cooling in natural conditions, a reliable one-piece connection is formed, the clamp of the conical nut loosens and the welding fixture is removed from the adapter.

Second phase

The connecting surfaces of the connecting element 2 of the fitting 1 and the mating part 4 of the adapter 3 of the modular device with the welded pipe section are melted using the heating heads of the outer 15 and the inner surfaces 16 fixed on the plate of the welding machine 16. Then, the connecting element of the fitting is combined with the mating part of the adapter, after cooling in vivo forming a reliable weld. Similarly, other adapters with welded pipe sections or the mounting unit of which is intended for connection with the functional devices of the pipeline system are connected to other connecting elements of the fitting.

The melting of the surfaces of the end sections of multilayer and single-layer pipes, ring and welding sockets of adapters, connecting elements of fittings can be carried out by heating plates in a manual welding machine or welding machine with a mechanical, electric or hydraulic drive.

The combination of a multilayer pipe and adapter, adapter and fitting can be done manually, using centralizers, or using standard devices of welding machines.

TECHNICAL RESULT

Improving the quality of reliability of the connection of multilayer composite pipes, reducing the risk of a decrease in the bore when connecting them, expanding the range of applications of the device for connecting multilayer pipes, reducing the required working range of devices for connecting multilayer pipes.

The proposed device is industrially applicable using existing technical means. (Currently, prototypes are manufactured and tested. Serial production is scheduled to begin in the 1st quarter of 2015)

It will be apparent to one skilled in the art that various modifications and changes are possible in the present utility models. Accordingly, it is assumed that these utility models cover possible modifications and changes, as well as their equivalents, without departing from the essence and scope of the utility models disclosed in the accompanying utility model formula.

Claims (103)

1. A modular device for connecting at least two end sections of a multilayer pipe or at least one end section of a multilayer pipe with at least one end section of a single layer pipe or one functional device of a piping system, the components of which are made of polymers by injection molding or molding represents at least one fitting, including at least two unified connecting elements located at the end sections of the fitting, and at least two adapters, each of which is made in the form of a monolithic, or composite, or assembly element, and with one part corresponding to the connecting element attached to the fitting, and the other part through the mounting unit to the end section of the multilayer pipe, or the end a section of a single-layer pipe, or a functional device of the piping system, or another fitting, or another adapter. 2. The modular device according to claim 1, wherein the polymers are selected from the same polymeric material as the pipe. 3. The modular device according to claim 1, in which the polyolefin polymer is selected as the polymer. 4. The modular device according to claim 1, in which polyethylene of increased heat resistance is selected as polymers. 5. The modular device according to claim 1, wherein the polymers are selected from the group consisting of: polyethylene, polyethylene compounds, polyethylene copolymers, ethylene-octene copolymers, ethylene-octene-1 copolymer, polypropylene, polypropylene compounds, polypropylene copolymers, compounds and compositions based on polypropylene and polyethylene. 6. The modular device according to claim 1, wherein the polymer selected is a polymer from the group consisting of polysulfone, polyethersulfone, polyphenyl sulfone, polyphenylene sulfide, polyarylene sulfone, polyarylene sulfone, polyalkylene sulfone. 7. The modular device according to claim 1, in which the polymers selected are polymers obtained by combining paraformaldehyde and 4,4-hydroxydianiline. 8. The modular device according to one of paragraphs. 1-7, in which the polymers do not contain stabilizing additives. 9. The modular device according to one of paragraphs. 1-7, in which the polymers contain an effective amount of at least one stabilizing additive selected from the group including: thermostabilizer, antioxidant, radical scavenger, aging inhibitor, light stabilizer, UV stabilizer, flame retardant. 10. The modular device according to one of paragraphs. 1-7, in which the polymers do not contain dispersed mineral fillers, nanoscale mineral fillers, nanoparticles. 11. The modular device according to one of paragraphs. 1-7, in which the polymers contain at least one mineral particulate filler in an amount of from 0.1 to 45 wt.%, Which is selected from the group consisting of talc, mica, calcium carbonate, kaolin, clay, magnesium hydroxide, calcium silicate, technical carbon, graphite, boron nitride, molybdenum disulfide, aluminum nitride, aluminum oxide, aluminum hydroxide, aluminum powder, aluminum fibers, aluminum flakes, iron powder, iron fibers, iron flakes, copper powder, copper fibers, copper flakes, graphite fibers, metallized e glass fibers, metallized fibers basalt, silica, diatomite, titanium oxide, iron oxide, pumice, antimony oxide, dolomite, dawsonite, zeolitic filler, vermiculite, montmorillonite and hydrated alumina. 12. The modular device according to one of paragraphs. 1-7, in which the polymers contain mineral nano-sized fillers, which are obtained from intercalated clays, expanded clays, layered clays, layered silicates, kaolin, calcium carbonate, calcium phosphate, silicon carbide, silica, boron nitride, molybdenum disulfide, aluminum nitride, oxide aluminum, aluminum hydroxide and carbon. 13. The modular device according to one of paragraphs. 1-7, in which the polymers contain nanoparticles selected from the group including: fullerene, graphene, carbon nanotubes, nanotubes obtained from synthetic polymers. 14. The modular device according to one of paragraphs. 1-7, in which the fitting and adapters are made of the same polymer. 15. The modular device according to one of claims 1 to 7, in which the fitting, adapters and components, assembly and embedded parts of the adapter are made of different polymers or different compositions of the same polymer or contain various combinations of stabilizing additives, mineral dispersed fillers, mineral nanoscale fillers, nanoparticles. 16. The modular device according to claim 1, in which the fitting is made in the form of: couplings, elbows, tees, crosspieces, water sockets, pneumatic sockets, mixer, manifold, valve, pump, valve, shutoff valves, control valves, protective valves, safety pipe fittings, measuring pipe fittings, distribution and mixing pipe fittings. 17. The modular device according to claim 1, in which the connecting element of the fitting and the adapter response portion are unified for one pipe size. 18. The modular device according to claim 1, in which the connecting element of the fitting and the adapter response portion are unified for at least two adjacent pipe sizes. 19. The modular device according to claim 1, in which the connecting element of the fitting is located on the inner surface of the fitting, respectively, the portion of the adapter that is responsive to the connecting element of the fitting is located on the outer surface of the adapter. 20. The modular device according to claim 1, in which the connecting element of the fitting is located on the outer surface of the fitting, respectively, the part of the adapter that responds to the connecting element is located on the inner surface of the adapter. 21. The modular device according to one of paragraphs. 1 or 16-20, in which the connecting element of the fitting and the corresponding part of the adapter are made in the form of a threaded connection. 22. The modular device according to one of paragraphs. 1 or 16-20, in which the connecting element of the fitting and the corresponding part of the adapter are made in the form of a flange connection. 23. The modular device according to one of paragraphs. 1 or 16-20, in which the connecting element of the fitting and the corresponding part of the adapter are made in the form of a snap or lock connection. 24. The modular device according to one of paragraphs. 1 or 16-20, in which the connecting element of the fitting and the corresponding part of the adapter are made in the form of a welded joint. 25. The modular device according to p. 24, in which the welded connection of the connecting element of the fitting and the adapter part mating to it is formed by corresponding cylindrical surfaces, or surfaces in the form of a truncated cone, or surfaces in the form of a truncated sphere, or surfaces including alternating sections selected from surface groups: cylindrical surfaces, truncated conical surfaces, truncated spherical surfaces. 26. The modular device according to p. 24, in which the connecting element of the fitting and / or the response part of the adapter to it do not contain embedded heating elements. 27. The modular device according to p. 24, in which at least one connecting element of the fitting and / or the corresponding response part of the adapter contain at least one embedded heating element, made in the form of a spiral or tape, from a material with low electrical conductivity, or from a material selected from the group consisting of: nickel alloys, chromium alloys, iron alloys; nichrome, fechral, carbon, graphite, silicon carbide. 28. The modular device according to p. 24, in which at least one connecting element of the fitting and / or the corresponding portion of the adapter that responds to the connecting element of the fitting contains an embedded heating element in the form of an inductor. 29. The modular device according to claim 1, in which the mounting unit of the adapter is made in the form of a welded connection, or a threaded connection, or a flange connection, or a snap connection, or a lock connection, or a collet connection, or a press connection, or a crimp connection. 30. The modular device according to claim 1, in which the mounting unit of the adapter includes a embedded threaded or embedded flange element made of metal or polymer. 31. The modular device according to claim 1, in which the mounting unit of the adapter includes an embedded element made in the form of a pipe of metals and their alloys selected from the group: steel, copper, aluminum, the final section of which may or may not contain a thread. 32. The modular device according to claim 1, in which the adapter mounting unit is made in the form of a sleeve welding connection including an internal welding socket for placing the final section of a single-layer polymer pipe with a depth of at least 10% of the outer diameter of the pipe, made in the form of a coaxial pipe or a truncated cylinder cone, the base of which is the outer end part of the mounting unit, or alternating sections of the cylinders and / or truncated cones. 33. The modular device according to p. 32, in which the mounting unit of the adapter does not contain embedded heating elements. 34. The modular device according to p. 32, in which the mounting unit of the adapter contains at least one embedded heating element, made in the form of a spiral or tape, from a material with low electrical conductivity, or from a material selected from the group including: nickel alloys, chromium alloys, iron alloys; nichrome, fechral, carbon, graphite, silicon carbide. 35. The modular device according to p. 32, in which the mounting unit of the adapter contains a embedded heating element in the form of an inductor. 36. The modular device according to claim 1, in which the adapter mounting unit is made in the form of a sleeve, which includes an inner ring socket for accommodating a multilayer pipe, located in the adapter body coaxially with the pipe, the outer wall of which covers the outer surface of the pipe, and the inner wall of the annular socket the inner surface of the pipe. 37. The modular device according to p. 36, in which the depth of the inner wall of the annular socket of the adapter mounting unit is at least 2.5% of the pipe wall thickness. 38. The modular device according to claim 36, wherein the depth of the inner wall of the annular receptacle of the adapter mount assembly is less than, or equal to, or greater than the depth of the outer wall of the annular receptacle of the adapter attachment site. 39. The modular device according to p. 36, in which the inner surface of the inner wall of the annular socket of the mounting unit of the adapter is a coaxial pipe cylindrical surface or a surface in the form of a truncated cone, the basis of which is the outer end surface of the inner wall of the annular socket, or alternating sections of cylindrical surfaces and / or surfaces in the form of truncated cones. 40. The modular device according to p. 36, in which the inner surface of the outer wall of the annular socket of the adapter mounting node is a cylindrical surface coaxial to the pipe or a surface in the form of a truncated cone, the basis of which is the outer end surface of the outer wall of the annular socket, or alternating sections of cylindrical surfaces and / or surfaces in the form of truncated cones. 41. The modular device according to p. 36, in which the annular socket of the mounting unit of the adapter does not contain buffer cavities and / or anti-compression holes. 42. The modular device according to p. 36, in which the annular socket of the adapter mounting unit includes at least one buffer cavity, which is formed by coaxially extending the ring socket into the adapter mounting unit and separated from the ring socket by a solid or intermittent radial collar located on the inner surface of the outer and / or the inner wall of the annular socket, or is separated from the annular socket by at least one protrusion located on the inner surface of the outer and / or inner wall of the ring th nest, or separated from the circumferential seat decrease in its flow cross section by the inner surface of the inner and / or outer wall of the annular slot. 43. The modular device according to p. 36, in which the annular socket of the mounting unit of the adapter includes at least one buffer cavity made on the inner surface of the inner and / or outer wall of the annular socket in the form of a coaxial annular slot in the groove or groove with a constant cross-section or section decreasing in the direction from the end of the corresponding wall of the annular socket into the depth of the annular socket of the adapter mounting unit, and from 5 to 100% of the depth of the corresponding wall of the annular socket. 44. The modular device according to claim 36, wherein the annular socket of the adapter mounting assembly includes at least one buffer cavity formed on the inner surface of the inner and / or outer wall of the annular socket in the form of a radial groove. 45. The modular device according to p. 36, in which the annular socket of the mounting unit of the adapter contains at least one anti-compression hole connecting the inner and outer surfaces of the outer wall of the annular socket. 46. The modular device according to one of paragraphs. 36 or 42-44, in which the buffer cavity of the annular socket of the mounting unit of the adapter contains at least one anti-compression hole connecting the buffer cavity and the outer surface of the outer wall of the annular socket. 47. The modular device according to claim 1, in which the mounting unit of the adapter includes a mating portion of the connecting element of the fitting. 48. The modular device according to claim 1, in which the mounting unit of the adapter includes a counterpart of another adapter. 49. The modular device according to one of paragraphs. 36 or 47-48, in which the mounting unit of the adapter does not contain embedded heating elements. 50. The modular device according to one of paragraphs. 36 or 47-48, in which the adapter mounting unit contains at least one embedded heating element made in the form of a spiral or tape, from a material with low electrical conductivity or from a material selected from the group including: nickel alloys, chromium alloys, alloys gland; nichrome, fechral, carbon, graphite, silicon carbide. 51. The modular device according to one of paragraphs. 36 or 47-48, in which the mounting unit of the adapter contains at least one embedded heating element in the form of an inductor. 52. The modular device according to p. 36, in which the mounting unit of the adapter includes at least one embedded heating element made by a single unit for simultaneous melting of the inner and outer surfaces of the annular socket. 53. The modular device according to p. 36, in which the mounting unit of the adapter includes at least one embedded heating element made by separate blocks for differential melting of the inner and outer surfaces of the annular socket. 54. The modular device according to claim 1, wherein the adapter mount assembly includes a mortgage element made in the form of a weld joint and made of a polymer other than the polymer of which the adapter mount assembly is made. 55. The modular device according to claim 54, wherein the embedded element of the adapter mounting assembly is made in the form of a sleeve that includes an inner ring socket for accommodating a multilayer pipe located in the housing of the embedded element coaxially to the pipe, the outer wall of the annular socket covers the outer surface of the pipe, and the inner the wall of the annular socket - the inner surface of the pipe. 56. The modular device according to claim 55, in which the depth of the inner wall of the annular socket of the embedded element of the adapter mounting unit is at least 2.5% of the wall thickness. 57. The modular device according to p. 55, in which the depth of the inner wall of the annular socket of the embedded element of the adapter mounting element. 58. The modular device according to claim 55, in which the inner surface of the inner wall of the annular socket of the embedded element of the adapter mounting unit is a cylindrical surface coaxial to the pipe or a surface in the form of a truncated cone, the base of which is the outer end surface of the inner wall of the annular socket, or alternating sections of cylindrical surfaces and / or surfaces in the form of truncated cones. 59. The modular device according to claim 55, in which the inner surface of the outer wall of the annular socket of the embedded element of the adapter mounting unit is a cylindrical surface coaxial to the pipe or a surface in the form of a truncated cone, the base of which is the outer end surface of the annular socket, or alternating sections of cylindrical surfaces and / or surfaces in the form of truncated cones. 60. The modular device according to p. 55, in which the annular socket of the embedded element of the mounting unit of the adapter does not contain buffer cavities and / or anti-compression holes. 61. The modular device according to claim 55, in which the annular socket of the embedded element of the adapter mounting unit includes at least one buffer cavity, which is formed by coaxially extending the annular socket into the depth of the embedded element of the adapter mounting unit and is separated from the annular socket by a solid or intermittent radial collar located on the inner surface of the outer and / or inner wall of the annular socket, or separated from the annular socket by at least one protrusion located on the inner surface the outer and / or inner walls of the circumferential seat, or separated from the circumferential seat decrease in its flow cross section by the inner surface of the inner and / or outer wall of the annular slot. 62. The modular device according to p. 55, in which the annular socket of the embedded element of the mounting bracket of the adapter includes at least one buffer cavity made on the inner surface of the inner and / or outer wall of the annular socket in the form of a coaxial annular slot in the groove or groove with a constant cross section or a section decreasing in the direction from the end of the corresponding wall of the annular socket into the depth of the annular socket of the embedded element of the adapter mounting unit, and from 5 to 100% of the depth of the corresponding wall ring nests. 63. The modular device according to p. 55, in which the annular socket of the embedded element of the mounting unit of the adapter includes at least one buffer cavity made on the inner surface of the inner and / or external wall of the annular socket of the embedded element in the form of a radial groove. 64. The modular device according to claim 55, wherein the embedded element of the adapter mounting assembly comprises at least one anti-compression hole connecting the inner surface of the annular socket of the embedded element and the external surface of the ring socket of the embedded element or the outer surface of the adapter mounting assembly. 65. The modular device according to one of paragraphs. 55 or 61-63, in which the buffer cavity of the annular socket of the embedded element of the mounting element of the adapter contains at least one anti-compression hole connecting the buffer cavity and the outer surface of the ring socket of the embedded element or the outer surface of the mounting unit of the adapter. 66. The modular device according to p. 55, in which the embedded element of the mounting unit of the adapter does not contain embedded heating elements. 67. The modular device according to p. 55, in which the embedded element of the adapter mounting assembly comprises at least one embedded heating element made in the form of a spiral or tape, from a material with low electrical conductivity or from a material selected from the group including: nickel alloys , chromium alloys, iron alloys; nichrome, fechral, carbon, graphite, silicon carbide. 68. The modular device according to claim 55, wherein the embedded element of the adapter mounting portion comprises at least one embedded element in the form of an inductor. 69. The modular device according to claim 55, wherein the embedded element of the adapter mounting assembly comprises at least one embedded heating element made as a single unit for simultaneously melting the inner and outer surfaces of the annular socket. 70. The modular device according to claim 55, wherein the embedded element of the adapter mounting assembly comprises at least one embedded heating element made by separate units for differential melting of the inner and outer surfaces of the annular socket. 71. A fitting welding tool for melting the surfaces of the fitting element of the fitting of the modular device and the surface of the adapter that responds to the fitting element of the fitting, made of metal or ceramic, includes: a heating head of the internal surfaces, which is a monolithic or hollow rod with a height not less than the depth of the fitting or mating adapter and the outer surface corresponding to the inner surface of the fitting of the fitting or the inner the surface of the adapter mating part, which is mounted on a flat base or is made integral with a flat base, including fasteners to the heating plate of the welding machine; and a heating head of the outer surfaces, which is a sleeve with a depth not less than the depth of the connecting element of the fitting or the adapter counterpart, the inner surface of which corresponds to the outer surface of the connecting element of the fitting or the outer surface of the adapter counterpart, which is mounted on a flat base or is integral with a flat base, including fastening elements to the heating plate of the welding machine. 72. The fitting welding tool according to claim 71, wherein the outer surface of the heating head of the inner surfaces is aligned with the connecting element of the fitting or the adapter counterpart in the form of a cylindrical surface or a surface in the form of a truncated cone, the base of which is the transverse plane of a flat base, or surface in in the form of a truncated sphere, or alternating sections of cylindrical surfaces and / or surfaces in the form of truncated cones and / or surfaces in the form of a truncated sphere. 73. The welding tool of a fitting according to claim 71, in which the inner surface of the heating head of the outer surfaces is aligned with the connecting element of the fitting or the adapter counterpart in the form of a cylindrical surface or a surface in the form of a truncated cone, the base of which is the outer end plane of the heating head of the outer surfaces, or surfaces in the form of a truncated sphere, or alternating sections of cylindrical surfaces, and / or surfaces in the form of truncated cones, and / or surfaces in the form of a truncated sphere. 74. The welding tool of a fitting according to claim 71, wherein the heating head of the outer surfaces and / or the heating head of the inner surfaces do not contain anti-compression holes connecting the inner and outer surfaces of the heating heads and / or coaxial heads of the longitudinal grooves and grooves. 75. The welding tool of a fitting according to claim 71, wherein the heating head of the outer surfaces and / or the heating head of the inner surfaces comprises at least one anti-compression hole connecting the inner and outer surfaces of the heating heads and / or at least one longitudinal groove coaxial to the heads or groove. 76. The welding tool of a fitting according to claim 71, wherein the heating head of the outer surfaces and / or the heating head of the inner surfaces are made of ceramic or a metal selected from the group: copper, copper alloys, aluminum, aluminum alloys, steel, steel alloys. 77. The fitting welding tool according to claim 71, wherein a release coating is applied to the surface of the heating head of the outer surfaces and / or the heating head of the inner surfaces. 78. A fitting welding tool according to claim 77, wherein the release coating is made of ceramic or a heat-resistant polymer selected from the group: polytetrafluoroethylene, polyimide. 79. A fitting welding tool according to claim 77, wherein the release coating contains mineral fillers selected from the group: carbon, molybdenum dioxide. 80. The welding tool of the adapter for melting the surfaces of the annular socket of the adapter mounting unit and the surfaces of the end section of the multilayer pipe made of metal or ceramic includes: a heating head of the pipe, including: a short tube with a length and an inner diameter corresponding to the length and outer diameter of the heated end portion of the outer the surface of the pipe, which is fixed on a flat base or is made in one piece with a flat base, including fasteners for the heating plate welding machine astins and a monolithic or hollow rod coaxially placed on the same flat base inside the tube, or made integral with it with a length and diameter corresponding to the length and inner diameter of the heated end portion of the inner surface of the pipe; and a heating head of the surface of the annular socket of the adapter mounting unit, including a sleeve that is mounted on a flat base or is made integral with a flat base, including fasteners for the heating plate of the welding machine, the outer surface of which is designed to melt the inner surface of the outer wall of the annular socket, and the inner surface which is designed to melt the inner surface of the inner wall of the annular socket. 81. The fitting welding tool according to claim 80, wherein the inner surface of the tube and / or the outer surface of the monolithic or hollow rod of the heating head of the pipe is made coaxially to the pipe in the form of cylindrical surfaces or surfaces in the form of a truncated cone, the base of which is a cross section of the flat base of the heating head pipes, or alternating sections of cylindrical surfaces and / or surfaces in the form of truncated cones. 82. The adapter welding tool according to claim 80, in which the inner and outer surfaces of the sleeve of the heating head of the annular socket of the adapter mounting unit are made in the form of a truncated cone, coaxial to the annular socket of the cylindrical surfaces, the base of which is a cross section of the flat base of the heating head, or alternating sections of cylindrical surfaces and / or surfaces in the form of truncated cones. 83. The adapter welding tool according to claim 80, in which the heating head of the pipe and / or the heating head of the annular groove of the adapter mounting unit do not contain anti-compression holes, and / or coaxial heads of longitudinal grooves and grooves, and / or buffer cavities. 84. The adapter welding tool of claim 80, wherein the heating head of the pipe and / or the heating head of the annular groove of the adapter mount assembly comprises at least one anti-compression hole connecting the inner and outer surfaces of the heating head and / or at least one coaxial head longitudinal groove and groove. 85. The welding tool of the adapter according to claim 80, wherein the pipe heating head comprises a buffer cavity formed in the base of the pipe head in the form of an annular groove with a distance between the walls coaxial to the pipe head less than the distance between the inner surface of the tube and the outer surface of the rod, which includes at least one anti-compression hole connecting the buffer cavity to the outer surface of the tube. 86. The welding tool of the adapter according to claim 80, in which the heating head of the pipe and / or the heating head of the annular groove of the adapter mounting unit are made of ceramic or metal selected from the group: copper, copper alloys, aluminum, aluminum alloys, steel, steel alloys. 87. The adapter welding tool according to claim 80, wherein a release coating is applied to the surface of the pipe heating head and / or the heating head of the annular groove of the adapter mount assembly. 88. The welding tool of the adapter according to claim 87, wherein the release coating is made of ceramic or a heat-resistant polymer selected from the group: polytetrafluoroethylene, polyimide. 89. The welding tool of the adapter according to claim 87, in which the release coating contains mineral fillers selected from the group: carbon, molybdenum dioxide. 90. The adapter welding fixture is designed to install the adapter with a mounting unit in the form of an annular groove or with a mortgage element in the form of an annular groove on the heating head and remove it after heating, and to prevent deformation of the inner wall of the annular socket when heating and welding the adapter with a multilayer pipe, made made of metal or heat-resistant polymer, and which includes a handle mounted on the handle, located inside the adapter and mounted on the handle or the handle of the adapter. 91. The welding device of the adapter according to claim 90, in which the rod is made monolithic. 92. The adapter welding fixture of claim 90, wherein the rod and / or handle are hollow. 93. The adapter welding fixture of claim 90, wherein a screw with a head extending outside the handle of the welding fixture and a nut screwed onto it is located inside a hollow handle and a hollow rod, the end portion of which is divided into at least two longitudinal segments in the form of a truncated cone and a diameter in its largest part, not exceeding the internal passage diameter of the adapter. 94. The adapter welding tool according to claim 90, wherein the rod is made with an outer diameter corresponding to from 80 to 100% of the passage diameter of one adapter size, and a length of at least not shorter than the distance from the extreme end part of the adapter mating part and the extreme end part of the inner the wall of the annular socket of the adapter mounting unit or the extreme end part of the inner wall of the embedded element of the adapter mounting unit in the form of an annular socket. 95. The adapter welding device of claim 90, wherein the rod is made in the form of at least two coaxial monolithic or hollow cylinders following one after the other with outer diameters corresponding to 80 to 100% bore diameters of at least two adjacent adapter sizes. 96. The welding fixture of the adapter according to one of paragraphs. 90-95, in which the rod is made of metal selected from the group: iron and its alloys, aluminum and its alloys, copper and its alloys. 97. The welding fixture of the adapter according to one of paragraphs. 90-95, in which the rod is made of a heat-resistant polymer with a temperature of thermal deformation above 230 ⁰ C. 98. The welding fixture of the adapter according to one of paragraphs. 90-95, in which the core is made of a polymer selected from the group consisting of: polysulfone, polyethersulfone, polyphenylsulfone, polyphenylene sulfide, polyarylene sulfone, polyarylethersulfone, polyalkylene sulfone, polytetrafluoroethylene, polyamide, polyimide. 99. The welding fixture of the adapter according to one of paragraphs. 90-95, in which the rod is made of ceramic. 100. The welding device of the adapter according to one of paragraphs. 90-95, in which a release coating is applied to the surface of the rod. 101. The welding device of the adapter according to claim 100, wherein the release coating is made of ceramic or a heat-resistant polymer selected from the group: polytetrafluoroethylene, polyimide. 102. The welding tool of the adapter according to claim 100, wherein the release coating contains mineral fillers selected from the group: carbon, molybdenum dioxide. 103. The adapter welding tool of claim 90, wherein the adapter retainer is a latch on the adapter body, or a lock, or a spring-loaded clip, or an eccentric clip, or a collet clip.

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