RU161305U1 - CONNECTION OF SECTIONS OF A BIMETALLIC SECTIONAL RADIATOR - Google Patents

Abstract

The connection of the sections of the bimetallic sectional radiator containing the tubular parts of adjacent sections connected by connecting sleeves, and in each tubular part at its ends are made conical bells, oppositely directed relative to each other, each connecting sleeve is made conical on both sides and each of its conical end with an interference fit is located in the conical socket of the adjacent tubular part of the section, while blocking sealing th layer of adhesive sealant.

Description

Presented in this description, the technical solution relates to a means of heating the premises, in particular, to sectional radiators, sections of radiators and their connections.

Known sectional radiator made of tubular sections, each of which is made of upper and lower pipe sections connected by vertically arranged tubes. The upper and lower pipe sections form the upper and lower channels with threaded nipples at the ends. In the lower pipe segment of the extreme section and in the lower pipe segment of the adjacent section, vertically arranged threaded holes are made. In the cavity of the lowermost lower pipe segment of the extreme section, a partition is installed in front of the threaded sleeve on the outside of the radiator, which separates the cavity of the lowermost pipe segment of the extreme section from the cavity of the adjacent lower pipe segment of the other section. Each threaded hole of the pipe segment is located on the opposite side of the tube, the axis of which is aligned with the axis of the threaded hole of the pipe segment. The inner diameter of the tube dt is less than the diameter do of the threaded hole of the pipe segment. The diameters Dk of the channels are equal, Dk> do, the partition is docked to the end face of the sleeve and is located between the connector line of the lower pipe segments of the two extreme adjacent sections and the axis of the tube of the outermost section of the radiator. Adjacent extreme pipe segments have thickenings in which threaded holes are made, combined with threaded holes made in the walls of pipe sections. The invention improves the versatility of the radiator (RU 2313044 C1, 12/20/2007).

Known sectional bimetallic radiator, consisting of sections fastened together with a vertical heat-exchange finned column. The column has compensating nodes and horizontal heads. The sections are pulled together and equipped with a mortgage frame made of a material with higher mechanical and / or corrosion properties, made of a vertical pipe and a horizontal component that are tightly fastened together, forming channels for the coolant. Sections contain compensatory nodes of the section in the areas of transition of heads to the vertical part of the column of the section. Compensator assemblies include joints of the vertical pipe and the horizontal component of the frame with a gap, sealed with an aluminum alloy, and a heat-dissipating facing part made by injection molding and thickened at the point where the butt parts of the vertical pipe and the horizontal component of the frame are set. The lateral ribs of the column do not reach the compensating nodes, forming openings for convective heat flows (RU 2351858 C2, 04/10/2009).

A sectional radiator is known (RU 23666 U1, 06.27.2002 C1), comprising sequentially arranged sections that are connected to each other by couplings and sealed in the area of their joints, while at the junction of the sections their mating surfaces are made stepwise, and the seal is made in the form round in cross-section of the ring, which is located between the ends of the steps.

A sectional radiator is known (RU 2382293 C1, 02/20/2010), comprising sequentially arranged sections that are connected to each other by clutches and in the area of their connections are sealed with an appropriate seal from the outside, said clutch installed between the sections having multidirectional screw threads on its two sides, screwed into the tubular parts of the connected sections, which have screw mating threads from the inside. When the couplings rotate in the screw tubular parts of adjacent connected sections, multidirectional screw threads press the sections against each other and ensure the tightness of the connection. It should be noted that each coupling is made in the form of a threaded connecting sleeve with hooks for the mounting key located in it, used in the process of connecting sections of the radiator.

The patent RU 2382293 C1 contains a connection of sections of a bimetallic sectional radiator containing tubular parts of adjacent sections connected by connecting sleeves (prototype).

The design of the known radiator according to the patent RU 2382293 C1 provides a method of manufacturing a radiator, in which steel cores are first made, for which two tubular parts of each steel core are connected by welding to a column pipe, then the core is molded in the form of liquid metal, the radiator section is molded, processed after molding and threading in the tubular parts of each section. After that, the sections are connected by connecting sleeves (the threaded couplings indicated above) introduced into the tubular parts of the collectors. Next, screw threaded bushings are screwed into the end sections. After connecting the sections of the radiator, it is painted.

The design of the known radiator is predetermined by the designs of the sections of the radiators, which are relatively complex due to the presence of a plurality of threaded couplings (threaded sleeves) in them and the radiator as a whole, requiring very precise alignment of the connected sections and the use of intersection gaskets in the joints. Due to the possible combination of tolerances on the deviation of the forms, the threaded couplings are screwed into the threaded tubular parts of the sections with a skew leading to chewing of the threads, uneven compression of the gaskets and their partial destruction. Partial destruction of the thread of the threaded connection and uneven compression of the gasket are most dangerous from the point of view of reliability of the radiator, since it is, in fact, hidden. It is also possible not simultaneous thread entry into the connected sections, which leads to a decrease in the strength and tightness of the connection. As a result, the complex designs of the sections and the radiator as a whole predetermine the complexity of the method of its production with great economic costs.

Each threaded connecting sleeve for connecting sections has a complex structure associated with the need to carry out hooks under the mounting key for rotation of the sleeve. These hooks are located inside the sleeve, which increases the resistance to movement of the coolant in the radiator. Due to the fact that the connecting and end sleeves have threads at the ends for connecting with the thread of the tubular parts, the end area of each sleeve is selected taking into account this thread and this area provides additional resistance to the movement of the coolant through the connecting sleeve.

When assembling radiators during the connection of the sections, they perform a complex operation - place the mounting key in the cavities of the tubular parts of the sections to be connected, engage the mounting key with hooks, rotate the key in the specified direction, screw the threaded connecting sleeve into the thread of the tubular sections and screw the sections together to the end of the ends of the tubular parts through a sealing gasket, which in turn allows only a certain degree of compression. In the case of the indicated minor displacement of the axes of the connected parts of the tubular parts of the sections, the flanges of the threads of the threads of the connecting sleeve and the threads of the tubular parts of the collectors are destroyed, and the sealing sealing gasket is crimped within unacceptable limits. All this weakens the threaded connection and makes it unsuitable in terms of strength and tightness. It is significant that this partial or complete destruction of the thread is, as indicated above, such a hidden destruction that is not amenable to visual observation, since it is located inside the tubular parts of the collectors. As a result, a latent decrease in the strength and tightness of a threaded joint, as a rule, is detected either during the test of the radiator, or during its operation. These shortcomings as a result adversely affect the strength and tightness of the connection of the sections of the radiators. In addition, the known method of manufacturing radiators has a relatively large number of operations, it is complex and less reliable.

Thus, the significant disadvantages of the known connection of the sections of the radiator according to the patent RU 2382293 C1 is the comparative structural complexity of the connection.

The technical result of the utility model is to simplify the connection and manufacturing technology of the radiator.

The technical result is obtained by connecting sections containing tubular parts of adjacent sections connected by connecting sleeves, and in each tubular part there are conical bells at its ends, oppositely directed towards each other, each connecting sleeve is conical on both sides and each conical end thereof an interference fit is located in the conical socket of the adjacent tubular part of the section, while between the contact surfaces of the sockets and bushings there is a blocking sealing layer her sealant.

In FIG. 1 shows a sectional bimetallic radiator in longitudinal section (three sections of the radiator are conventionally shown).

In FIG. 2 shows a radiator section.

In FIG. 3 - connection of the radiator sections in accordance with this utility model).

In FIG. 4 - connecting sleeve (increased).

In FIG. 5 - end sleeve.

In FIG. 6 shows a variant of the section, each tubular part of which has a conical socket at one end, and its other end is made conical, protruding outside the section.

The bimetallic sectional radiator (Fig. 1) in this embodiment contains three interconnected sections: the first end section 1, the second middle section 2 and the third end section 3. In another embodiment, the radiator of the middle sections can be many.

Each section includes a steel core 4, consisting of lower and upper tubular parts 5 and 6, respectively, which are rigidly connected to the pipe-columns 7. Radiator sections are connected by connecting sleeves 8 located in the tubular parts 5 and 6. In the end sections 1 and 3 Radiator end sleeves 9 are located with thread 10 inside. The end sleeves 9 are connected to the tubular parts 5 and 6 of the end sections 1 and 3, each thread 10 of the end sleeve is designed to be connected to a pipe of a heating system (not shown). The outer surface of the radiator is covered with a layer 11 of aluminum alloy, forming a fin 12.

In each tubular part 5 and 6, conical sockets 13 (Fig. 2) are made at its ends, oppositely directed with respect to each other. Each connecting sleeve 8 (FIG. 4) is tapered on both sides and each tapered end 14 is tightly located in the tapered bell 13 of the adjacent tubular part 5 of the section as shown in FIG. one.

Each end sleeve 9 (Fig. 5) has one conical end 15, with an interference fit located in the conical socket 13 of the tubular part 5 of the end section (Fig. 1). Between the contact surfaces of the sockets and bushings there is a cured thin layer of adhesive-sealant 16 (Fig. 3), which is an epoxy compound or anaerobic sealant.

Between the conical ends 14 of the connecting sleeve 8 is made a cylindrical section 17 (Fig. 4). One specified end of the end sleeve 9 (Fig. 5) is made conical, its other end is made cylindrical with a cylindrical outer surface 18.

On the outer surface of each connecting sleeve 8 and on the outer surface of each end sleeve 9, recesses 20 are made (Figs. 4, 5), which can be annular grooves, or the recesses can be solid screw or intermittent grooves, or in the form of point recesses.

In one case, each conical bell 13 (Fig. 2) has a taper equal to the taper of the conical end of each connecting and end bushings 8 and 9, respectively, while the specified taper is selected in the range of 1-4 °. In another case, the specified taper is also selected in the range of 1-4 °, however, each conical socket 13 has a taper different from the taper of the conical end of each connecting sleeve 8 and the conical end of the end sleeve 9 by 0.1 to 2 °. The ring stiffness of the tubular parts 5 is equal to or greater than the ring stiffness of the connecting and end sleeves 8 and 9, respectively. The ends of the adjacent tubular parts 5 and the ends of the adjacent tubular parts 6 are pressed against each other. They can be joined end-to-end or with a gap between them, in accordance with the design position.

The radiator works as follows. The assembled radiator (Fig. 1) is connected to the threaded elements of the pipes of the heating system (not shown). To do this, screw the threaded elements of the pipes of the heating system into the thread 10 of each end sleeve 9. A heat carrier is supplied to the radiator from the heating system under pressure, which passes through the tubular parts 5 and 6 through the column pipes 7 of the steel cores 4 and heats them. Heat from the steel cores 4 is transferred to the layer of aluminum alloy 11, to the fins 12 and, further, to the surrounding space. When this coolant passes through the connecting sleeve 8, located in the tubular parts 5 and 6 and through the end sleeve 9, located in the end sections 1 and 3 of the radiator.

During operation, the tubular parts 5 and 6, the connecting sleeves 8 and the end sleeves 9 experience the pressure of the coolant, and the end surfaces of the sleeves 8 and 9 resist the movement of the coolant in the radiator. Since the total area of the end surfaces of the bushings is extremely minimized, accordingly, the hydraulic pressure loss in the radiator is reduced. Also, the inner surfaces of the threaded bushings of the prototype have on the two sides of each threaded bush two internal hooks for the mounting key for rotation of the bushings during the assembly of the radiator. The area of each hook on one side in the direction of the coolant is within 5-7% of the bore of the sleeve, which increases hydraulic losses in the specified range. Meanwhile, as the inner surfaces of the bushings 8 and 9, presented in this description of the radiator, are made smooth. This embodiment of the bushings 8 and 9 eliminates hydraulic losses associated with the need to perform any elements in the bushings that resist the movement of the coolant through the bushings. As a result, making the inner surface of each bushings 8 and 9 smooth significantly reduces resistance to movement of the coolant and hydraulic losses of the coolant. The total bore of the radiator bushings increases by 20-40%. Moreover, the execution of the inner surfaces of the bushings 8 and 9 smooth, significantly simplifies their design and the radiator as a whole.

The advantage of connecting the sections of the radiator is the high tightness and reliability of the connection due to the exclusion of gaskets and ensuring self-centering of the connected elements of the sections, which significantly compensates for the errors in the manufacture of sections.

The indicated simplicity of connecting the sections made it possible to significantly simplify the design of radiators of this type and the technology for their production.

Claims (1)

The connection of the sections of the bimetallic sectional radiator containing the tubular parts of adjacent sections connected by connecting sleeves, and in each tubular part at its ends are made conical bells, oppositely directed relative to each other, each connecting sleeve is made conical on both sides and each of its conical end with tight fit is located in the conical socket of the adjacent tubular part of the section, while between the contact surfaces of the sockets and bushings there is a blocking sealing th layer of adhesive sealant.

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