Tubular heat exchanger

FIELD: heating.

SUBSTANCE: invention refers to heat power engineering and can be used at manufacture of tubular heat exchangers. A tubular heat exchanger for heat exchange between two fluid media includes housing (2), inside which one or more tubes (8) for the first fluid medium pass between inlet and outlet chambers (5, 6). The above tubes pass through openings (13) in baffle walls (11) fixed at some distance from each other by means of one or more fasteners. The fastener represents channel (14) fixed by being latched in one or more grooves (19) formed on the corresponding baffle walls (11). According to the invention, the above channel has a V-shape, and groove (19) has a V-shape with projections (23) on two of its opposite edges (22) so that V-channel (14) can be latched by being entering behind those projections.

EFFECT: simpler and lower cost of manufacture and installation of heat exchangers.

8 cl, 5 dwg

 

The invention relates to tubular heat exchangers.

Known tubular heat exchangers for performing heat exchange between two fluid media, the first and second, respectively. This heat exchanger includes a housing within which is located one or several tubes attached at the ends to the dividing partitions dividing the housing into three chambers, in particular, the input and output of the camera for the first fluid and located between a Central chamber with its inlet and outlet for the second fluid.

In known heat exchangers across a direction of arrangement of the tubes has one or more guide walls, and pipes pass through openings in the rails partitions that serve to make the flow of the second fluid a certain trajectory.

Traditionally, the guide baffles are mounted so that the second fluid is formed through holes located alternately on one and the other, opposite sides of the housing to direct the second fluid medium along a certain trajectory.

In the known tubular heat exchangers guides partitions are held at some distance from each other using fastening means made in the form of separator tubes or spacers, the us is set out between the guide walls.

When using pre-separation pads each row are on the same line separator tubes provide at least one threaded rod and threaded rods also pass through corresponding holes in the guide plates.

The disadvantage of this solution is that these threaded rods and dividing the tube must be made of a material of a sufficiently large thickness, since the movement of the guide walls under the action of flow of the second fluid passing through the Central chamber, should be limited.

A large amount of material required for the described construction, clearly implies high costs of material.

Another disadvantage is that the installation of the guide walls is time consuming, i.e. the mounting of the tubular heat exchanger requires more labor and is expensive.

In addition, the threaded rods should be fixed.

Another disadvantage is that for threaded rods and separating tubes using materials different from the material from which made the guide walls, which leads to higher costs associated with logistics structure.

From the document GB 207058 known alternative solution whereby the edges of the guide walls on the perimeter made the slits, while the guide baffles are designed for use with connecting rods, which also made the slits, so that the corresponding grooves engages, thereby establishing the specific distance between the guide walls.

The objective of the invention is the elimination of one or more of the above and/or other disadvantages.

This problem is solved in a tubular heat exchanger for heat exchange between two fluid media, the first and second, respectively, comprising a housing, inside of which between the input and output chambers passes one or more pipes for the first fluid, the tubes pass through holes in the guide walls, which are held at some distance from each other using one or more fastening means, each of which is made in the form of the profile recorded by snapping into the notches formed in the respective guide walls, and said profile is V-shaped, and the notches are V-shaped with protrusions on two opposite edges, so that a V-shaped profile snaps, going over the edges.

This embodiment of the tubular those who of labmedica provides ease of installation guides partitions inside by using a given profile.

Ultimately, it is enough to install the guide walls at the required distances from each other, for example, suitable for this purpose, the mounting fixture, after which the means of attachment can be easily fixed by a lock for fixing the guide walls at some distance from one another.

Another advantage is the ability to provide flexibility through the use of the profile, for example, due to the thin design of this profile, which saves material, and hence the funds.

Another advantage of this design is that the means of fastening and guiding partitions can be made of the same material, which reduces logistical costs required for the Assembly of the tubular heat exchanger according to the invention.

Preferably, the notches are located on the perimeter of the guide walls, allowing you to easily snap the profile in place, moving it in the radial direction.

While the above-mentioned protrusions act as locking elements, appropriately, from which a V-shaped profile may be fixed by it locks into place.

An additional advantage of using V-shaped profile is stiffening means crepe is placed in the transverse direction in comparison with the known threaded rods. Such V-shaped profile can withstand heavy loads without bending.

Preferably the profile is made of the slot, which can hold above the tabs during Assembly of the heat exchanger, so that the guide walls can be secured in these slots at some distance from each other.

The invention also relates to a guide wall for the tubular heat exchanger, which has at least one recess for fixing V-shaped profile means it locks into place, forming part of the fastening, ensures retention guide walls in a tubular heat exchanger at a distance from each other, while this groove is V-shaped with flanges at the opposite edges, so that a V-shaped profile snaps, going over the edges.

The invention also relates to a set of one or more guide walls for tubular heat exchanger and fastening means designed to hold the guide walls at a distance from each other in a tubular heat exchanger. The guide walls in this set have at least one recess forming part of the fastening means for fixing by snapping the V-shaped profile, and this recess has a V-shape with the tabs on dvojprocesorove edges, so a V-shaped profile snapped, stepping over the ledges, and the means of attachment include the profile of the V-shaped form, which can be clicks into place with the tabs on the grooves of the guides of the partitions.

To illustrate features of the invention hereinafter referred to as a non-limiting example described tubular heat exchanger according to a preferred variant embodiment of the invention with reference to the drawings.

1 schematically shows a tubular heat exchanger according to the present invention, a view in section;

figure 2 shows the means of attachment according to a preferred variant of the invention, which is indicated in figure 1 the position F2, type in the future;

figure 3 shows a plot of the heat exchanger, indicated in figure 1 the position F3 view in an enlarged scale;

figure 4 and 5 on an enlarged scale showing the sections along the lines IV-IV and V-V of figure 3, respectively.

As shown in figure 1, the tubular heat exchanger 1 according to the present invention comprises a sealed housing 2, which is divided into three chambers 4, 5 and 6, namely, a Central chamber 4 and located on each side of the two chambers 5 and 6. This separation is carried out by means of two end pieces in the form of parallel dividing walls 3.

Central chamber 4 is located between the specified divide is ranked on the 3 partitions with holes 7, pass through parallel pipes 8.

The other two chambers 5 and 6, located on each side of the Central camera 4 camera 5, forming the input section to the first fluid, and the chamber 6 forming the outlet pipe for the first fluid, connected by pipes 8.

Central chamber 4 has an inlet 9 and an outlet 10 for the second fluid and contains the guide walls 11, which are almost perpendicular to the longitudinal direction of the pipe 8.

The shape and relative location of the guide baffles are chosen so that the second fluid flowed in the chamber along a certain trajectory, for example, zigzag, while a second fluid flows through the Central chamber, sequentially performing the movement forward and backward, carrying with it a certain number of moves, which increases permeable fluid medium path to increase the amount of transferred heat.

To implement such a trajectory guide walls 11 pass from one side of the Central chamber 4 to the other side, not reaching this other side at a certain distance, forming a passage 12 for changing the direction of movement of the second fluid. Sequentially formed passages 12 are arranged alternately with one or the other the second side of the chamber.

Preferably the guide walls 11 made of stainless steel, but the invention is not limited to this material.

In the guide walls 11 have apertures 13, through which the pipe 8 of the heat exchanger 1.

The diameter of these holes 13 is almost equal to the diameter of the pipe 8, so that between the guide wall 11 and the pipe 8 there is limited clearance.

According to the invention the guide walls 11 are held at some distance from each other using one or more fastening means, each of which is formed by the profile 14, preferably made of elastic material.

As shown in figure 2, each of the fastening means is made in the form of a V-shaped profile 14 with the two walls 15 and 16, converging with decreasing distance between them.

Preferably the free edge 17 of the said walls 15 and 16 is made of one or more, one against the other, the slots 18. As presented in figure 2 embodiment of the invention the slots have some width and are held in the transverse direction through the free edge 17.

Preferably the guide walls 11 are held by fixing V-shaped profile 14 by snapping it in the process of assembling a tubular heat exchanger in the V-shaped grooves 19, which are located to papermate guide walls 11.

The recess 19 in the guide wall 11 has an almost V-shaped, with the apex of V-shaped notches 19 and the closed side of the fastening profile is directed in the opposite direction from the outer edge 20 of the guide walls 11.

Preferably the bottom of the recess 19 moves in an extra hole 21, with the result that notch does not have a pronounced arrow-shaped V-shaped.

Converging angled edge 22 of the recess 19 are protrusions 23, the dimensions of which are preferably the same or slightly smaller than the slots in the profile 14.

It is clear that to perform a tubular heat exchanger according to the invention it is sufficient to place the guide walls 11 and at proper distances in relation to each other, for example, designed for this purpose, the mounting fixture and positioning the notches 19 in the guide walls 11 along the same line.

After that, a V-shaped profile can be fixed in the grooves 19 of the guide walls 11.

It is clear that, including through the use of elastic material for the manufacture of fastening means can provide the opportunity for easy fixation of these fastening means in the guide walls 11 through the place.

When fixing the guide walls 11 with profiles 14 of the side surface 22 of the V-formation is Noah the notches 19 and the profile 14 are brought into contact with each other.

Profile 14 is fixed in place, since the protrusions 23 on the edges 22 of the notches 19 are held in the slots 18 of the profile.

Preferably, in the assembled condition of the structure free edge 17 of the V-shaped profile 14 are held to the outer edges 20 of the guide walls 11, as shown in figure 4 and 5, or almost to the outer edge 20 of the guide walls 11.

Upon completion of the installation, if necessary, the connecting profile 14 together with registered with it, the guide walls can be easily attached to the partition wall 3, for example, using a suitable process such as welding or the like.

The functioning of the tubular heat exchanger 1 according to the invention similar to the operation of the known tubular heat exchangers.

The first fluid flows from the inlet chamber 5 to the output chamber 6 through the pipes 8.

The second fluid medium is fed through the inlet 9 to the Central chamber 4 and is directed through the guide walls 11 a zig-zag path with the external flow pipe 8.

Due to the contact between the second fluid medium and the pipe 8, through which flows through the first fluid is transferred to the heat, causing the temperature of the second fluid at the outlet 10 and the input 9 will be different.

In other options, the ante embodiment of the invention the inlet 9 and outlet 10 for the second fluid may be located diagonally opposite each other, but not with the same hand, as shown in figure 1.

It is also possible location of the cameras 5 and 6 with the same side of the Central chamber 4. In this case, as you know, on the opposite side of the Central chamber 4 is formed by the area of the change of direction of flow is reversed.

Specialist in the art it is clear that the pipe 8 may be provided with fins to increase the heat exchange efficiency between the first and second fluid media.

According to the invention it is possible that the heat exchanger 1 can be performed by the division into a larger number of sections.

Although in this embodiment of the invention uses a thin-walled open V-shaped profile 14, it is obvious that other embodiments of the invention, for example, using a closed crimping profile, for example, a thin profile with a round, triangular or square cross-section.

In addition, you can perform grooves 19 in the guide walls 11 are not around their perimeter, and at a certain distance from the outer edge 20.

The present invention is not limited to the described and shown in the drawings option for its implementation, and the heat exchanger and directing baffle according to the present invention can be implemented in various forms and various razmara is without going beyond the scope of the invention.

1. Tubular heat exchanger for heat exchange between two fluid media, the first and second, respectively, comprising a housing (2), inside of which between the input and output chambers (5, 6) is one or more pipes (8) for the first fluid, the tubes pass through holes (13) in the guide baffles (11), fixed at a distance from each other using one or more fastening means, each of which represents a profile (14)recorded by snapping one or more notches (19)made in the respective guide walls (11), characterized in that said profile is V-shaped and the recess (19) has a V-shaped with protrusions (23) on two opposite edges (22), so that V-shaped profile (14) is latched by going over the edges.

2. The tubular heat exchanger according to claim 1, characterized in that the recesses (19) in the guide walls (11) are located on the perimeter of these guide walls (11).

3. The tubular heat exchanger according to claim 1, characterized in that the profile (14) in the bracket with the guide baffles (11) has a slot (18)that hold these tabs (23) V (19), when the guide walls (11) are in the assembled state.

4. The tubular heat exchanger according to any one of claims 1 to 3, from which causesa fact, that the closed side of the V-shaped profile and the top of the V-shaped recess (19) is directed away from the outer edges (20) of the respective guide walls (11).

5. The tubular heat exchanger according to any one of claims 1 to 3, characterized in that in the assembled condition of the free edge (17) of the V-shaped profile (14) reach or almost reach the outer edge (20) of the guide walls (11).

6. The tubular heat exchanger according to claim 4, characterized in that in the assembled condition of the free edge (17) of the V-shaped profile (14) reach or almost reach the outer edge (20) of the guide walls (11).

7. A set of one or more guide walls (11) for tubular heat exchanger and fastening means intended for holding the guide baffles (11) at a distance from each other in a tubular heat exchanger, while the guide baffles (11) have at least one recess (19), forming part of the fastening means for fixing by snapping the V-shaped profile (14), and this recess (19) has a V-shaped with protrusions on two opposite edges (23), so that V-shaped profile (14) is latched, going over the ledges, and the means of attachment include the profile (14) V-shaped form, which can be clicks into place with the tabs (19) on the grooves of the guide walls (11).



 

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