Distributor for a heat exchanger with a corrosion-resistant lining

 

(57) Abstract:

The dispenser is designed for heat exchangers with high performance anti-corrosion cladding. The tube plate is provided with a ledge formed by deposition of a welded material and intended for the education of the connection cylinder of the distributor. The latter is equipped with a ring of corrosion-resistant material having essentially rounded radius L-shaped cross-section, tightly coupled with the aforementioned connection plate, its projection and its casing and connecting the radius of the corrosion-resistant cladding tube plate and cylinder. The resistant material is represented by titanium. The invention provides continuity anticorrosive cladding with a minimum of stress concentration and minimal use of corrosion-resistant material. 1 S. and 3 C.p. f-crystals, 3 ill.

The present invention relates to a new design of the distributor for a heat exchanger with high-performance corrosion-resistant cladding (e.g., titanium), in which, starting from a flat tube plates, the continuity of the corrosion-resistant coating is achieved within the connection between the tube plate and the cylinder will distribute the material, this maximizes the reliability of connection between the tube plate and the cylinder valve and significantly reduces the cost of the work performed.

Currently known and widely used different types of dispenser for heat exchangers with high performance anti-corrosion coating, for example of titanium.

One of the known types of valve, a cylindrical tubular plate U-shaped section in which a flat bottom and cylindrical wall connected by a radius to eliminate the possibility of stress concentration, and hence the probable points of discontinuity. However, it should be borne in mind that such tubular plate has the disadvantage that in the process of formation of the coating method of the explosion, and this operation is very important when applying a titanium coating, the side wall of the said grating will reflect the blast wave with the ultimate formation of numerous defects, the end result of which will be suitable for practical use rather large peripheral part of the tube plate. The consequence will be the need to use the tube plate of large diameter, and slok resolved in another type of dispenser for heat exchangers with a corrosion-resistant lining, in which use completely flat tube plate with the annular groove, in which is mounted element for welding to the cylinder of the distributor and to take additional element of corrosion resistant material.

Nevertheless, this latter valve also has a drawback in that it contributes to the intensification and concentration of stresses at the point of connection between the tube plate and the cylinder only due to the mentioned annular groove, and the related reduction of the cross section of the tube plate, which has as its end result a decrease in the reliability and the need to use more high-performance corrosion-resistant material with the same dimensions of the dispenser to fill the mentioned annular groove, which naturally leads to an increase in the cost of manufacture of the distributor.

The present invention is to eliminate the above-noted disadvantages by creating a distributor for a heat exchanger with high performance anti-corrosion coating, for example of titanium, in which the continuity of the corrosion-resistant cladding between the flat tubes is ispolzovaniem corrosion-resistant material.

The objective of the invention is achieved mainly by eliminating pipe plate annular groove, and is required for the formation of a welded joint between the tube plate and the cylinder valve protrusion formed on the peripheral part of the tube plate in the sediments it welded material; in addition, the continuity of the corrosion-resistant lining in the point of connection is achieved using a ring of corrosion-resistant material with a cross section that resembles essentially the form of a rounded radius L, which is tightly bonded to the connection point and the internal surfaces in the immediate vicinity of this point of connection.

Therefore, the distributor with a corrosion-resistant lining for heat exchanger containing the tube plate and the cylinder of the distributor, both of these elements have a corrosion-resistant lining of suitable material formed by the method of the explosion, and the corrosion-resistant material removed from the peripheral parts where the connection pipe plate with cylinder valve, differs according to the present invention that is free from corrosion-resistant material (lining) of the peripheral part of the tube is imago material with subsequent formation of a welded joint between the tube plate and the cylinder of the distributor, and that ring of corrosion-resistant material having essentially rounded radius L - shaped cross-section, is strongly linked with this connection and the inner surfaces of the distributor, which are in the immediate vicinity of the mentioned compounds, as well as the fact that guaranteed the connection to the radius of the corrosion-resistant cladding tube plate with corrosion-resistant cladding cylinder distributor.

To facilitate installation of the ring of corrosion-resistant material, the cross section of which resembles the creature rounded on a radius of the letter L on the cylinder valve, then one further characteristic of the present invention mentioned ring has a smaller diameter than the diameter of the cylinder, and bartekova ring of corrosion-resistant material is installed between the ring having essentially a cross section in the form of a rounded radius L and corrosion-resistant cladding cylinder distributor.

In accordance with one modification of the present invention a ring of corrosion-resistant material with a cross-section in the form of a rounded radius L consists of many sectors, sarandiarse elements of corrosion-resistant material, welded to the underlying parts. And, finally, in a preferred variant of the invention, the corrosion-resistant material is titanium.

Below the invention will be described in detail with reference to the accompanying description of the drawings, which are only illustrative of the preferred variants of the invention, but in no case do not limit its scope, it should be borne in mind that the invention admits of numerous technical, structural or technological changes and modifications without departing from the essence and scope of the present invention.

Brief description of drawings

Fig. 1 is a longitudinal section through the dispenser of the heat exchanger according to the present invention.

Fig. 2 is a longitudinal section through one shown in Fig.1 parts on an enlarged scale.

Fig. 3 is a perspective view in an enlarged scale, illustrating a modified version of the ring with a rounded radius L - shaped cross section according to the invention.

Now refer to the drawings, which shows that the distributor heat exchanger consists of a cylinder 1, a closed domed end 2 and is covered with two corrosion-resistant titanium about loscoe tube plate 5, the inner surface is also coated with anti-rust titanium clad 6 formed on the same technology metallization using explosion; on this plate there are plenty of tubes 7. The tube plate 5 and the cylinder 1 are welded butt joint with welded connection 8 at their respective peripheral parts 9 and 10, which had previously removed the titanium cladding 6 and 3, respectively. On the peripheral portion 9 of the tube plate 5 is formed a protrusion 11, which is connected with the tube plate (see Fig. 2), and the formation of the protrusion is implemented by deposition here welded material, and the protrusion in this case acts as an edge for these connections 8. A corresponding protrusion 12 is formed also in the peripheral part 10 of the cylinder 1 by deposition here welded material. Then use titanium ring 13 with a rounded radius L-shaped cross section, which is welded with their ends to the underlying element, perform the connection between the titanium cladding 3 of the cylinder 1 and titanium clad pipe 6 of the plate 5.

To facilitate installation of the ring 13 in the cylinder 1, the diameter of the said ring is made slightly smaller than the diameter of the sa is blizovski 3 of the cylinder 1, to L-ring 13 is appropriately welded to the titanium cladding pipe 6 of the plate 5 and to the titanium ring 14. Working with titanium specialists are well aware that between the deposition of the welded material and the titanium cladding must be installed inert material 15 and 16, respectively, for example silver, aluminum, etc.

In accordance with the shown in Fig. 3 a modification of the invention titanium ring 13 is essentially rounded radius L-shaped section is made in the form of three sectors 17, 18 and 19, respectively, which after installation inside the cylinder 1 are welded together, with appropriate weld 20 is protected by kolachalama elements 21.

1. Dispenser with corrosion-resistant lining for heat exchanger containing the tube plate and the cylinder of the distributor, which is also lined with corrosion-resistant material by a method of formation of the coating by the explosion, with anti-corrosion material removed from the peripheral parts, which made the connection pipe plate cylinder, characterized in that it is equipped with a ring of corrosion-resistant material, and free from corrosion allizon by deposition of a welded material and is intended for the formation of a welded joint between the tube plate and the cylinder, moreover, the above-mentioned ring of corrosion-resistant material has an essentially rounded radius L-shaped cross-section, tightly coupled with the aforementioned connection plate, its projection and its casing and connects the radius corrosion cladding tube plate with corrosion-resistant lining of the cylinder.

2. The distributor under item 1, characterized in that it is equipped butikowym ring of corrosion-resistant material, installed between the corrosion-resistant cladding of the cylinder and the ring, essentially, a rounded radius L-shaped cross-section, and the diameter of the ring with the said cross-section less than the diameter of the cylinder.

3. The distributor under item 1, characterized in that the ring of corrosion-resistant material with essentially rounded radius L-shaped cross-section consists of many sectors, welded together after they are installed in the cylinder of the distributor, while the weld is protected by kolachalama elements of corrosion-resistant material is welded to the underlying elements.

4. The distributor under item 1, wherein the resistant material is represented by titanium.

 

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