RU205460U1 - Sectional radiator section connection - Google Patents

Abstract

The utility model relates to fluid heaters, in particular to details of the connection of various sections, for example, in bimetallic radiators. its end is tapered, its other end is tapered in the form of a tapered part of the connecting sleeve, the tapered end with an interference fit is located in the tapered bell of the adjacent tubular section of the section, while between the contact surfaces of the bells and bushings there is a blocking sealing layer of adhesive sealant. each conical socket has a taper equal to the taper of the tapered end of each connecting and end, 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 tapered socket has a taper that differs from the taper of the tapered end of each connecting sleeve and the tapered end of the end sleeve by an amount in the range of 0.1-20 °. The annular stiffness of the tubular parts is equal to or greater than the annular stiffness of the connecting and end sleeves, respectively. The ends of the adjacent tubular portions and the ends of the adjacent tubular portions are pressed against each other. They can be connected end-to-end or with a gap between them, in accordance with the design position. The disadvantage of this connection method is that the bearing capacity of the interference connection drops sharply with a decrease in the wall thickness of the male and female parts, therefore there is a dependence on the mechanical properties of the tubular parts and connecting and end sleeves. Choosing a higher ring stiffness on the tubular parts than on the connecting and end sleeves means that the sections and connecting and end sleeves will have different material properties, and also require increased accuracy in the manufacture of the tapered parts for a reliable connection. connection of the sections, the mechanical interference will be in a narrow place, therefore the main adhesion element of the sections will be the sealant, which is not reliable. The technical result of the utility model is the reliability of the connection with the same mechanical properties of the material on the manifold, connecting and end sleeves. The technical result is achieved by connecting the sections of the bimetallic sectional radiator , in each tubular part at its ends there are two inner cones (Fig. 2, pos. 8 and pos. 9), at two different angles opposite to each other, and two outer cones are made on the connecting sleeve (Fig. 2, pos. .11 and item 13) p. From the corresponding angles on the section, two different angles opposite to each other, while the cone with a large angle (Fig. 2, item 11) has a shorter length than a similar cone on the section (Fig. 2, item 8). The cone on the section (Fig. 2, pos. 8) and the cone on the sleeve (Fig. 2, pos. 11) are made for an interference connection. The cone (Fig. 2, pos. 8), the bushing (Fig. 2, pos. 11) are made with a taper of 1: 50 ± 1 °. The cone (Fig. 2, pos. 9), the sleeve (Fig. 2, pos. 13) are made at an angle of 20 ° ± 4 °. At the end of the cone of the section there is a protrusion (Fig. 2, pos. 10), and at the end of the cone of the bushing there is a groove (Fig. 2, item 14). When pressing in, the outer cone (Fig. 2, pos. 9) with the protrusion (Fig. 2, pos. 10) expands and after reaching the groove (Fig. 2, pos. 14) it snaps into it. This allows, in contrast to the prototype, where only a press connection was used, to increase the strength of the connection. To depressurize the joint, in addition to the pressing force, it is also necessary to overcome the shear force of the material. To seal the joint, it is provided to fill the groove 12 for the sealant or hermetic gasket with a sealant or a sealing gasket. Figure 1 shows a sectional bimetallic radiator in a longitudinal section (conventionally shown three sections of the radiator ).one. Section 2. Aluminum fins. 3. Coupling sleeve 4. End bushing. 5. Sealant or sealing gasket. Figure 2 shows a portion of a radiator section with connecting and end sleeves. Taper with a smaller angle on the section. 9. Taper with a large angle on the section. 10. Section ledge 11. Taper with a smaller angle on the bushings. 12. Groove for sealant or gasket. 13. Taper with a large angle on the bushings. 14. The groove on the bushings is for the projection on the section.

Description

The utility model relates to heaters of a fluid medium, in particular to details of the connection of various sections, for example, in bimetallic radiators.

Known sectional bimetallic radiator, consisting of sections fastened together with a vertical heat exchange finned column. The column has expansion joints and horizontal heads. The sections are tied together and equipped with an embedded frame made of a material with higher mechanical and / or corrosive properties, made of a hermetically sealed vertical pipe and a horizontal component that form channels for the coolant. The sections contain expansion joints of the section in the zones of transition of the heads to the vertical part of the column of the section. The expansion joints include joints of the vertical pipe and the horizontal component of the frame with a gap, hermetically cast with an aluminum alloy, and the facing heat dissipating 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 seized. The lateral ribs of the column do not reach the expansion joints, forming openings for convective heat fluxes (RU 2351858 C2, 10.04.2009).

Known sectional radiator (RU 23666 U1, 06/27/2002 C1), containing sequentially located sections, which are connected to each other by couplings and in the area of their connections are sealed with a seal, while at the junction of the sections, their mating surfaces are stepped, and the seal is made in the form circular in cross-section ring, which is located between the ends of the steps.

Known sectional radiator (RU 2382293 C1, 02/20/2010), containing sequentially located sections, which are connected to each other by couplings and in the area of their connections are sealed with a corresponding seal from the outside, and the specified coupling, installed between the sections, has multidirectional screw threads on both sides screwed into the tubular parts of the connected sections, which have screw mating threads from the inside. When the couplings rotate in the screwed tubular parts of the adjacent connected sections, the 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 located in it for a mounting key used in the process of connecting radiator sections.

The patent RU 2382293 C1 contains a connection of sections of a bimetallic sectional radiator, containing tubular parts of adjacent sections, connected by connecting bushings.

When assembling radiators in the process of connecting the sections, a complex operation is performed - the assembly key is placed in the cavities of the tubular parts of the connected sections, the assembly key with hooks is engaged, the key is rotated in a given direction, the threaded connecting bushings are screwed into the thread of the tubular parts of the section and the sections are screwed (brought together) up to the stop 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 slight displacement of the axes of the connected parts of the tubular parts of the sections, the crests 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 compressed within unacceptable limits. All this weakens the threaded connection and makes it unsuitable in terms of strength and tightness. It is essential that this partial or complete failure of the threads is, as indicated above, such a latent failure that cannot be visually observed, since it is located inside the tubular portions of the manifolds. As a result, a latent decrease in the strength and tightness of a threaded connection, as a rule, is revealed either during the testing of the radiator or during its operation. As a result, these disadvantages negatively affect the strength and tightness of the connection of the radiator sections. In addition, the known method of manufacturing radiators has a relatively large number of operations, it is complex and less reliable.

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

The design of the well-known radiator according to the patent RU 162419 U1 (prototype) provides for a method of connecting the collectors using conical connecting bushings, and in each tubular part at one end of it a conical socket is made, its other end is made conical in the form of a conical part of a connecting sleeve, a conical end with an interference fit is located in the conical bell of the adjacent tubular part of the section, while between the contact surfaces of the bells and bushings there is a blocking sealing layer of adhesive sealant.

In one case, each conical socket has a taper equal to the taper of the tapered end of each connecting and end, 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 tapered socket has a taper that differs from the taper of the tapered end of each connecting sleeve and the tapered end of the end sleeve by an amount in the range of 0.1-2 °. The annular stiffness of the tubular parts is equal to or greater than the annular stiffness of the connecting and end sleeves, respectively. The ends of the adjacent tubular portions and the ends of the adjacent tubular portions 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 disadvantage of this connection method is that the bearing capacity of the interference connection drops sharply with a decrease in the wall thickness of the male and female parts, therefore there is a dependence on the mechanical properties of the tubular parts and the connecting and end sleeves. Choosing a higher ring stiffness on tubular parts than on connecting and terminating sleeves means that the sections and connecting and terminating sleeves will have different material properties, as well as require increased precision in the manufacture of tapered parts for a reliable connection.

In the method with different angles of the mating conical parts of the connection of the sections, the mechanical interference will be in a narrow place, therefore the sealant will be the main adhesion element of the sections, which is not reliable.

The technical result of the utility model is the reliability of the connection with the same mechanical properties of the material on the manifold, connecting and end sleeves.

The technical result is achieved by connecting the sections of the bimetallic sectional radiator, in each tubular part at its ends there are two internal cones (Fig. 2, pos. 8 and pos. 9), at two different angles opposite to each other, and on the connecting sleeve two outer cones are made (Fig. 2, pos. 11 and pos. 13) at the corresponding angles on the section with two different angles opposite to each other, while the cone with a large angle (Fig. 2 pos. 11) has a smaller length than a similar cone on the section (figure 2, item 8). The cone on the section (Fig. 2, pos. 8) and the cone on the sleeve (Fig. 2, pos. 11) are made for an interference connection. The cone (Fig. 2, pos. 8), the sleeve (Fig. 2, pos. 11) are made with a taper of 1: 50 ± 1 °. The cone (Fig. 2, pos. 9), the sleeve (Fig. 2, pos. 13) are made at an angle of 20 ° ± 4 °.

At the end of the cone of the section there is a protrusion (Fig. 2, pos. 10), and at the end of the cone of the sleeve there is a groove (Fig. 2, pos. 14). When pressed, the outer cone (Fig. 2, pos. 9) with a protrusion (Fig. 2, pos. 10) expands and after reaching the groove (Fig. 2, pos. 14) snaps into it. This allows, in contrast to the prototype, where only a press connection was used, to increase the strength of the connection. To depressurize the connection, in addition to the pressing force, it is also necessary to overcome the shear force of the material.

To seal the connection, it is envisaged to fill with a sealant or a sealing gasket groove 12 for a sealant or a hermetic gasket.

Figure 1 shows a sectional bimetallic radiator in longitudinal section (conventionally shows three sections of the radiator).

1. Section.

2. Aluminum fins.

3. Connecting sleeve.

4. End bushing.

5. Sealant or sealing gasket.

Figure 2 shows a part of a radiator section with connecting and end sleeves.

8. Taper with a smaller angle on the section.

9. A cone with a large angle on the section.

10. Protrusion on the section.

11. Taper with a smaller angle on the bushings.

12. Groove for sealant or gasket.

13. Large angle cone on bushings.

14 Groove on bushings for section ledge.

FIG. 3 shows a sectional bimetallic radiator without connecting bushings in longitudinal section (conventionally shown three sections of the radiator).

1. Section.

2. Aluminum fins.

4. End bushing.

5. Sealant.

6. End sleeve.

Claims (1)

Connection of a section of a sectional radiator, consisting of the lower and upper tubular parts forming the collectors, connected by at least one column-pipe, characterized in that in each tubular part, at its ends, two internal conical cones are made at two different angles, oppositely directed with respect to each to each other, and two outer conical cones are made on the connecting sleeve at two different angles opposite to each other, while the cone with a large angle on the sleeve has a shorter length than a similar cone on the pipe part and, when connected, forms a groove for filling with sealant or a sealing gasket and at the end of the inner cone of the tubular part there is a projection, and at the end of the outer cone with a large angle there is a groove on the sleeve with the possibility of snapping the projection into it.

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