RU2762791C2 - Connection for radiator sections - Google Patents

Abstract

FIELD: heating equipment.

SUBSTANCE: invention relates to means of heating rooms. The connection of the radiator sections contains adjacent sections joined together, pressed by their ends to each other by two threaded nipples, which are located inside the threaded collectors of the sections. In the middle part of the nipple, a rectangular annular recess is made, in which a sealing elastic ring made of silicone, which has the shape of a brand in a cross section, is located. The shape of the brand is formed when the ring is compressed in its working position, and it has horizontal and vertical parts. The horizontal part of the ring is located in the recess of the nipple, and the vertical part of the ring is located between the ends of the collectors of adjacent sections.

EFFECT: increase in the strength and tightness of the connection of the radiator sections.

4 cl, 8 dwg

Description

This technical solution refers to sectional radiators for heating, a feature of which is that adjacent sections are connected to each other by threaded nipples screwed into the threaded ends of the collectors of the sections to be connected.

Known connecting nipples for connecting radiator sections, each of which has oppositely cut threads at the ends of the nipple, as well as an annular groove for the O-ring in the middle part of the nipple between its threaded sections, while inside the nipple has hooks for the tool for screwing the nipple into the manifolds of the sections radiator (US 290072 B, 1969-05-29. AT 290072 B, 1971-05-25. FR 2720820 A1, 1995-12-08).

Known is the nipple of a water heating battery intended for use in water heating devices, namely in the assembly of multisection water heating batteries. The invention includes a sleeve with internal beads and symmetrically cut left and right threads on the outside, and a groove is made on the line of symmetry, a width of one and a half to two turns of each of the threads and a depth equal to the depth of the cut threads. The invention makes it possible to achieve a tight connection of the sections with a possible non-simultaneous entry of the nipple threads into the threads of the connected sections (RU 2221199 C2, 20.06.2003).

Known is a nipple for assembling sections of aluminum radiators, made in the form of a connecting tube with an external thread, on the inner surface of which there are engaging elements that provide the ability to interact with an assembly tool, characterized in that it is made of a polymer material, and the engaging elements are four longitudinal ribs, evenly spaced along the inner circumference of the tube, and the thickness of the ribs is equal to the thickness of the tube wall. The polymeric material is polysulfone, which is reinforced with glass fiber (RU 155977 U1, 10/27/2015).

Known radiator nipple, which contains a cylindrical tubular body, limited by end surfaces, from the ends on the outer surface of the body there are left and right threads. The nipple is made of a heat-resistant composite material. To accommodate the part of the mass of the sealing elastic gasket squeezed out during the screwing process of the radiators, an annular separating groove is made between the threads. Silicone is used as a seal. The threaded ends are equipped with lead-in chamfers, and the hole is made with multifaceted or diametrically located bulging protrusions. To indicate the presence of a left-hand thread, radially located hemispherical protrusions are applied to its end surface (RU 119444 U1, 08/20/2012).

Known is a radiator nipple containing a cylindrical tubular body, at the ends of which there are left and right threads, characterized in that the body cylinder is made of a steel strip blank by bending, and along the joint line - with a lock in the form of a protrusion and a depression, and is equipped with an annular groove on the outer surface of the body separating the right and left threads, and on the inner surface of the nipple hole diametrically located bulging protrusions are made. On one of the ends of the body there is a mark in the form of slots, notches or an annular groove. The inner hole has a polyhedral or oval profile. The nipple can be made of non-ferrous metal or composite polymer material. The joint line can be straight without a lock (RU 100815 U1, 27.12.2010).

Known sectional radiators, in each of which the radiator sections are connected to each other by threaded nipples screwed into the threaded ends of the collectors of the connected sections (RU 192310 U1, 12.09.2019. RU 112362 U1, 10.01.2012. RU 80539 U1, 10.02.2009. RU 114756 U1, 10.04.2012).

Known sectional radiator for water heating, containing a set of series-connected sections, each of which includes two transverse sections located in parallel on opposite sides and each having a straight channel passing between coupling pipes located on opposite sides of each transverse section and having each section with an internal thread , and a longitudinal section connecting the transverse sections and mating with them in their middle zones, which has a longitudinal channel communicating from opposite sides with straight channels of the transverse sections, through nipples with external threads connecting the sections and installed one for each pair of adjacent sleeve pipes two connected sections, two plugs installed in the coupling nozzles of one of the extreme sections, two fittings installed in the coupling nozzles of the second extreme section, one of which is designed to be connected to a pipe for supplying or removing a water coolant, and the second It is also designed to be connected to a pipe for supplying or removing a water coolant, and from the inside, an extension in the form of a pipe segment is connected to it, passing freely in a cavity formed by straight channels of the transverse sections of the sections and corresponding through nipples, corresponding to the axis of the second case, and the extension is shorter than this cavity 50-250 mm (RU 2478884 C1, 04/10/2013. UA 91952 U, 2014-07-25). In this case, in patent UA 91952 U, the sealing ring is located in the middle part of the nipple in its recess between the threaded sections.

It is known to connect the radiator sections with threaded nipples screwed into the lower and upper section headers (RU 194542 U1, 13.12.2019).

It is known to connect the radiator sections with threaded bushings, each of which has in the middle part an annular groove with a sealing ring located in it, interacting with the ends of the collectors of the connected sections in their working position (Yandex. Connection of radiator sections with threaded bushings. 05.02.2020).

The disadvantage of sectional radiators is that in the manufacture of individual sections, errors in manufacturing accuracy are allowed, as a result, when connecting the sections, the section collectors are not always coaxial and the collector axes are not always located in the same plane. When screwing threaded nipples into the threaded ends of these sections, the thread of the nipples is introduced into the threads of the collectors with a skew, as a result the threads of the collectors are damaged by the ridges of the threads of the nipples, as a result, the strength and tightness of the connection of the sections is reduced. In this regard, during the operation of the radiator, insufficient tightness of the connection of the sections and the flow of the coolant occur.

The technical result of this utility model is to increase the strength and tightness of the connection of the radiator sections.

The technical result is achieved by connecting the radiator sections, containing adjacent sections docked to each other, pressed by their ends to each other by two threaded nipples, which are located inside the threaded section headers, and in the middle part of the nipple there is a rectangular annular recess in which a T-shaped cross-section is located an elastic sealing ring made of silicone, the T-shape being formed when the ring is compressed in its working position and it has horizontal and vertical parts, the horizontal part of the ring being located in the recess of the nipple, and the vertical part of the ring being located between the ends of the collectors of adjacent sections.

A silicone ring in a compressed working position has working left side surfaces located on the left side of the ring, right side surfaces located on the right side of the ring, an upper end surface, a lower end surface, as well as stepped left and right surfaces, all indicated ring surfaces are pressed to adjacent working surfaces of two radiator sections in the working position of the sections.

The end of each section is made stepped, with a step having a working surface with a width of k and in the working position of the radiator, when the ring is compressed, the sum 2k + q1 = s1, where s1 is the width of the horizontal part of the ring in the working position, and the working areas compressed from all sides the rings are firmly pressed against the corresponding working areas of the radiator sections.

The threads of the nipples have flat areas, while the area of each thread of each nipple is located at a height of 2.0-4.0 mm from the bottom of the annular recess.

FIG. 1 shows a multi-section radiator.

FIG. 2 - view A in Fig. one.

FIG. 3 - connection of a pair of radiator sections, place B in Fig. one.

FIG. 4 - connection of radiator sections, the nipple in the upper part of the connection is not shown.

FIG. 5 is a cross-section of the O-ring in a non-working, free position (left) and a cross-section of the O-ring in a compressed working position (right).

FIG. 6 - nipple in perspective view (enlarged).

FIG. 7 - connection of sections in working position (enlarged).

FIG. 8 - the relative position of the sections in the working position without the nipple and the O-ring (enlarged).

The connection of the radiator sections contains adjoining radiator sections 1 and 2 (Fig. 1), which are pressed by their ends to each other by two intersectional threaded nipples 3 with oppositely threaded threads.

Each nipple 3 has a cylindrical hollow shape (Fig. 6) and on its opposite sides protruding hooks 4 for the tool for screwing the sections are made.

At the ends of the outer surface of each nipple 3 there are threaded sections 5 and 6 (Fig. 3, 6). In the middle part 7 of the nipple, a rectangular annular recess 8 is made, the depth h (Fig. 7) of which is greater than the thickness t of the nipple wall in the area of the recess 8. The rectangular recess 8 is obtained by recessing with a tool, which does not exclude the manufacture of the recess 8 of the nipple in another way.

In the recess 8 there is a sealing elastic ring 9 (Fig. 3, 7), compressed in the working position from all sides and having a T-shape in the compressed position. Ring 9 can be made of heat-resistant silicone or modified ethylene-propylene rubber (EPDM PEROX). The ring 9 in the non-working free position (when it is not compressed) has a cross-sectional shape shown on the left in FIG. 5. The ring 9 can have a circular, oval, elliptical, rectangular or other known shape in cross-section, while the material of the elastic ring has a corresponding modulus of elasticity. The limits of the selected modulus of elasticity allow, with the corresponding cross-sectional area and the shape of the ring 9 in section, to obtain the shape of a tee, when the ring is compressed from all its sides and is in a compressed position between the sections of the nipples 3, while in the compressed position the ring 9 has the shape shown in fig. 7.

In the compressed operating position, the ring 9 is pressed against the bottom surface 10 of the annular recess 8 (Fig. 6) and against the vertical surface 11 (Fig. 8) of each section, which is in connection with the adjacent radiator section. From the sides, the ring is compressed by the ends 12 and 13 of the collectors of the sections 1 and 2 of the radiator (Fig. 3). In the compressed position, the ring 9 has a thickness q1 and a height z1 (Fig. 3). The indicated values s1, w1, q1, m1 and z1 (Fig. 5) refer to the elastic compressed ring 9 when it is compressed from all sides in the working position, and the radiator sections 1 and 2 are pressed against each other and are in the working position.

The change in the shape of the ring 9 on the left in FIG. 5 into the shape of a ring 9 to the right of Fig. 5 from the compression of the ring is within the elastic modulus of the material from which the ring 9 is made, based on the condition of filling the ring with the elastic material of the irregularities and roughness of the working surfaces that work for the tightness of the connection, as well as from the condition not destruction of the structure of the elastic material of which the ring 9 is made.

The ring 9 (Fig. 5) in the working compressed position has working side left surfaces 14 and 15 located on the left side of the ring, side right surfaces 16 and 17 located on the right side of the ring, an upper end surface 18, a lower end surface 19, and also stepped left and right surfaces 20 and 21, each step having a width m1. All the mentioned working surfaces of the ring 9 are working, they work exclusively for the tightness of the connection of sections 1 and 2 of the radiator. These surfaces adjoin the adjacent working surfaces of the two radiator sections in the working position of the sections.

The end of each section is made stepped, with a step 22 (Fig. 8), having a working surface with a width of k (Fig. 4). In the working position of the radiator, when the ring 9 is compressed, then the sum 2k + q1 = s1, while the ring 9 is compressed from all its sides and its surfaces 14-20 (Fig. 5) are tightly pressed against the corresponding working areas of the radiator sections working for tightness ...

Each section of the radiator has upper and lower tubular headers 23 and 24, respectively (Fig. 1). Each manifold has an internal thread 25 (Fig. 4), in which the threads of the corresponding threaded section 5 and 6 of the nipple 3 are located when the sections 1 and 2 are connected to each other. In order to avoid damage to the tops of threads 25 of the collector of each section, the tops of threads 5 and 6 of each nipple 3 (Fig. 6) are cut off and they have flat areas 26, while the area 26 of each thread of each nipple is located at a height of 2.0- 4.0 mm from the bottom 10 of the annular recess 8 (Fig. 6).

The radiator is installed as follows. Put with an interference fit on a pair of nipples 3 two O-rings 9 so that the surface of the bottom 10 of the annular recess is in contact with the surface 27 of the ring 9 (Fig. 5, 6). The first section 1 of the radiator is placed on the assembly table and fixed in a fixed position. The second section 2 of the radiator is positioned coaxially with respect to the section 1 so that one gap remains between their adjacent upper collectors 23, and another gap remains between the adjacent lower collectors 24 for inserting the nipples 3 into these gaps.

Next, the nipples 3 are inserted into the gaps between the sections, the nipples are aligned with the holes of the upper and lower collectors 23 and 24 of the sections 1 and 2, the threaded sections 5 and 6 of the two nipples 3 are screwed simultaneously into the threads 25 of the upper and lower collectors of 23 and 24 sections. Then, through the holes of the upper and lower collectors of the sections, tools are introduced into the cavities of two nipples 3 pre-screwed into the collectors, two tools are hooked onto the hooks of 4 nipples (Fig. 2), the nipples are rotated with 3 tools clockwise until the ends 12 and 13 of each collector of sections come into contact 1 and 2 with running surfaces 14 and 16 of each O-ring ring 9.

When the tools and nipples rotate in a given direction, section 2 moves to the fixed section 1, the sections approach each other, each ring 9 enters simultaneously into the cavities of adjacent collectors 23 and 24 and is compressed by the ends of the collectors in the axial direction.

When the ring 9 is compressed in the axial direction, the elastic material of the ring is deformed and part of the material is squeezed out in the radial direction. In this case, the surface 19 of the ring 9 (Fig. 5) is tightly pressed against the surface of the rectangular groove of the nipple, and the surface of the ring 18 is tightly pressed against the two stepped surfaces 22 (Fig. 4) of adjacent collectors. In this position of the ring 9, the two surfaces 22 of the two collectors overlap with the surface 18 of the ring along the line of the joint of the surfaces 22 and the joint of the joint of the adjacent collectors is reliably sealed. The following radiator sections are connected in the same way to sections 2 and 3.

When screwing in the nipples of the platform 26 at the tops of the threads of the nipples, damage to the threads of the 25 collectors of the radiator sections is excluded, which significantly increases the strength of the connection, and the described connection using a silicone ring having an original shape, converted into a T-shape in the cross section of the ring, significantly increases the tightness of the connection.

Claims (7)

1. The connection of the radiator sections, containing butted adjacent sections, pressed by their ends to each other by two threaded nipples, which are located inside the threaded section headers, characterized in that in the middle part of the nipple there is a rectangular annular recess in which is located having a cross-section T-shape elastic silicone ring, the T-shape being formed when the ring is compressed in its working position, and it has horizontal and vertical parts, and the horizontal part of the ring is located in the recess of the nipple, and the vertical part of the ring is located between the ends of the collectors of adjacent sections. 2. The connection of the radiator sections according to claim 1, characterized in that the silicone ring in a compressed operating position has working left side surfaces located on the left side of the ring, right side surfaces located on the right side of the ring, an upper end surface, a lower end surface , as well as stepped left and right surfaces, all these ring surfaces are pressed against the adjacent working surfaces of the two radiator sections in the working position of the sections. 3. The connection of the radiator sections according to claim 1, characterized in that the end face of each section is stepped, with a step having a working surface with a width of k and in the working position of the radiator, when the ring is compressed, the sum 2k + q1 = s1, where s1 is the width of the horizontal part of the ring in the working position; q1 - the thickness of the ring in a compressed position, and the working areas of the ring compressed from all sides are tightly pressed against the corresponding working areas of the radiator sections. 4. The connection of the radiator sections according to claim 1, characterized in that the threads of the nipples have flat areas, while the area of each thread of each nipple is located at a height of 2.0-4.0 mm from the bottom of the annular recess.

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