Plate-type heat exchanger, comprising strengthening plates arranged outside extreme plates of heat exchanger

FIELD: power engineering.

SUBSTANCE: plates are arranged in parallel with the main plane of length and include several plates of heat exchanger and a strengthening plate. Plates of the heat exchanger are arranged next to each other and form a packet of plates with the first plate-to-plate gaps and the second plate-to-plate gaps. Each plate of the heat exchanger has four through holes, which form channels though a packet of plates. The plates of the heat exchanger comprise the extreme plate of the heat exchanger at one side of the packet of plates and the extreme plate of the heat exchanger at the opposite side of the packet of plates. Two of the specified plate-to-plate gaps in the packet of plates form an appropriate extreme plate-to-plate gap at the appropriate side of the packet of plates, which are limited in outside direction of one appropriate extreme plates of the heat exchanger. Strengthening plates are arranged outside one of the first plates of the heat exchanger. Strengthening plates have the main area, which passes in parallel to the plane of length and which comprises a strengthening pattern, which is arranged near two channels and comprises at least one groove passing in direction outside from the heat exchanger plates.

EFFECT: increased strength, simplified manufacturing.

17 cl, 11 dwg

 

The technical field and prior art

The invention relates to a plate heat exchanger, containing a set of plates with the plates according to the introductory part of paragraph 1 of the claims (see US-A-4,987,955).

In many applications for plate heat exchangers with non-detachable connection, for example by soldering, require high strength. This is important when working pressure of one or both of the environments that are transmitted through the plate heat exchanger is high or when the working pressure of one or both environments change over time. Plate heat exchangers are subjected to a pressure test before delivery. It is desirable to obtain such strength and rigidity of a plate heat exchanger that plastic deformation is applied to the pressure test will be as small as possible.

To ensure the requirements of high strength known to use thicker end or reinforcing plates, i.e. two plates located in the extreme positions in the plate pack. These reinforcing plates may also be referred to as mounting brackets or bearing and pressure plates. Also known use as a reinforcing plates, sheets, strips or thick flat plates. Such sheets, strips or thick flat plate can also camping, Hiking, hunting the outside of the bearing and/or pressure plates. The lack of such additional plates, strips or similar is that the manufacture of the heat exchanger becomes more complicated, because at the time of manufacture plate heat exchanger it is necessary to secure a larger number of components, for example, when it is subjected to soldering.

Another disadvantage thicker reinforcing plates with a large amount of material is that such reinforcing plates increases thermal "slowness". Because of this higher thermal slowness reinforcing plates receive lower quality plate heat exchanger in thermal fatigue, in particular, the heat exchanger plates, which are located most closely to the inside of the reinforcing plates. As the plate heat exchanger are made of thinner material, they will more quickly adapt to the ambient temperature, which leads to unwanted temperature difference between the heat exchanger plates and reinforcing plates and, thus, to thermally caused stresses.

In addition, when the thicker reinforcing plates increases material consumption and, thus, increases the cost of the heat exchanger.

US-A-4,987,955 discloses a plate heat exchanger, containing a number of wafers, go is their parallel to the main plane of extent. Plates contain a number of heat exchanger plates and at least one reinforcing plate. Plate heat exchanger are arranged next to each other to form a plate pack with the first plate interspaces for a first medium and second plate interspaces for a second medium. Each of the plates of the heat exchanger has four through holes that form channels running through the plate pack. Plate heat exchanger contain at plate heat exchanger on one side of the plate pack and the outer plate of the heat exchanger on the opposite side of the plate pack. Two of the lamellar spacing in the stack of plates forms a corresponding plate at a gap in the

the corresponding side of the plate pack, which is limited towards the outside of the corresponding one of the end plates of the heat exchanger. Reinforcing plate is located near and outside one of the end plates of the heat exchanger.

The invention

The present invention is to eliminate the above disadvantages and create a plate heat exchanger with high strength. In addition, the purpose of the invention is to provide a plate heat exchanger, which can be manufactured at low cost. In particular, the aim of the invention is a plate of Teploobmen the nick with a one-piece connection high strength.

This problem is solved by using a plate heat exchanger, which is defined in the beginning and which is characterized in that the reinforcing plate has a primary zone, which runs parallel to the plane of length and contains a hardening pattern, which is made near the two channels, and contains at least one recess, passing in the direction outward from the plate pack, and specified the recess extends across the plane of the length and apparently in the direction normal to the plane of extent. One such reinforcing plate reinforcing pattern may be made thinner than a fully flat plate, and at the same time withstand the forces acting on the plate pack. In particular, this reinforcing pattern may counteract the force due to high pressure of any of the media tends to deform the heat exchanger plates in an outward direction. Preferably, the recess is held in a plane that is perpendicular to this force tending to deform the heat exchanger plates in an outward direction. The recess or recesses can be obtained together with the compressor compressing the reinforcing plate. Pit length greater than its width, and it may be of considerable length in the specified plane perpendicular Dunn the th power, tending to deform the plate heat exchanger in an outward direction.

According to one variant of the invention, the plate heat exchanger narashima connected to one another. Preferably, plate narashima connected to one another by fusion of metal material, for example by soldering and/or welding. It should be noted that the plate can also be glued to each other. It should also be noted that the invention is also applicable to plate heat exchangers with gaskets, where the plates of the heat exchanger are pressed to each other using suitable coupling elements, such as coupling bolts.

According to another variant of the invention, the reinforcing pattern is arranged to communicate with the pressure pattern at the plate heat exchanger, which is located next to the reinforcing plate, so that the reinforcing plate is located in a fixed position relative to the at plate heat exchanger. Thereby facilitates the manufacture of the heat exchanger, since the reinforcing plate does not need to attach to extreme plate heat exchanger, for example, by welding before soldering plate heat exchanger. Due to the fixed position of the reinforcing plate can be closed is Lena in the desired position relative to the at plate heat exchanger and plate pack.

According to another variant of the invention, the recess has a linear stretch. It is linear over the can, as indicated above, paralleling the plane perpendicular to the force tending to deform the plate heat exchanger. This plane is perpendicular or essentially perpendicular to the plane of extension.

According to another variant embodiment of the invention the recess is held between these two channels. Forces which act in the direction outward from the plate pack is normal relative to the plane of extent, present mainly between channels. Deepening in this area can effectively counteract such forces.

According to another variant of the invention, the reinforcing pattern includes multiple recesses, which are held in an outward direction from the heat exchanger plates. Preferably, at least one of the recesses has a substantially linear stretch. All or some of the recesses can preferably be essentially straight and held essentially parallel to each other. In addition, at least one of the recesses can be carried out between these two channels.

According to another variant of the invention, the primary zone is essentially planar p is otazhenie, moreover, reinforcing the image is in the direction outward from the plane of the length.

According to another variant of the invention, the primary zone is the area that forms at least a large part of the area of the reinforcing plate. The area of the reinforcing plate can be slightly smaller than the area of the heat exchanger plates.

According to another variant of the invention, the reinforcing plate includes at least two through holes, which are arranged concentrically relative to the corresponding channel of the two channels. Therefore, the through holes of the reinforcing plate may form part of the channels of the plate heat exchanger. It should also be noted that the reinforcing plate may be solid, i.e. not contain holes, as the inlet and/or outlet for the considered channels can be located on the side of the plate pack, looking from the reinforcing plate.

According to another variant of the invention, the reinforcing plate includes two reinforcing pattern, which are located near a respective pair of channels, each of which contains at least one recess, passing out from the heat exchanger plates. Reinforcing plate may then contain at least h the four through holes, which are concentric relative to the corresponding channel of the channels of the plate pack.

According to another variant embodiment of the invention, each of the plates of the heat exchanger includes a heat exchanger and the outer marginal zone, which is around the area of the heat exchanger, and the reinforcing plate has such a size that it is inside the outer marginal zone. The outer marginal zone may contain a surrounding flange which passes outward from the plane of extent. According to this variant of implementation, the area of reinforcing plate, so that less than the area of the heat exchanger plates, and reinforcing plate may then preferably be essentially flat in the sense that it does not contain any flange, which contain a plate heat exchanger. However, it should be noted that the reinforcing plate can, in principle, have the same area as the plate heat exchanger, and to have the same surrounding flange, and the plate heat exchanger.

According to another variant of the invention, the plates contain additional reinforcing plate, which is located outside the second from extreme heat exchanger plates, and an additional reinforcing plate has a primary zone, which runs parallel to the plane of the length esoteric hardening figure, located near two of the channels and containing at least one recess, passing out from the heat exchanger plates. Therefore, the package inserts on both sides to contain a reinforcing plate for reinforcing the area around the channels. Additional reinforcing plate can in principle be of the same construction as above described reinforcing plate.

Brief description of drawings

The present invention will be explained hereinafter in more detail with the description of various embodiments with reference to the drawings, where:

Figure 1 is a side view of a plate heat exchanger according to the first variant embodiment of the invention.

Figure 2 is a front view of a plate heat exchanger according to figure 1.

Figure 3 - rear view of a plate heat exchanger according to figure 1.

4 is a cross-section on the line IV-IV in figure 2.

5 is a front view of the plate heat exchanger according to figure 1.

6 is a side view of a plate heat exchanger according to the second variant embodiment of the invention.

Fig.7 is a front view of a plate heat exchanger according to Fig.6.

Fig rear view of a plate heat exchanger according to Fig.6.

Fig.9 is a side view of a plate heat exchanger according to the third variant embodiment of the invention.

Figure 10 is a front view of a plate heat exchanger according to the SNO Fig.9.

11 is a rear view of a plate heat exchanger according to Fig.9.

Detailed description of embodiments of the invention

Figure 1-4 shows a first variant of a plate heat exchanger according to the invention. Plate heat exchanger contains a number of plates, each of which is essentially parallel to the main plane p of length. Plates contain in the first embodiment, the number of plates 1 of the heat exchanger and at least one reinforcing plate 2. In the first embodiment, the plate heat exchanger includes four reinforcing plate 2. Additionally, the plates contain the carrier plate 3 and the pressure plate 4, which are located on the corresponding side plates 1 of the heat exchanger. Plate 1 of the heat exchanger form a plate pack with the first miletinae intervals 5 for the first environment and the second miletinae intervals 6 for the second environment. Miletinae intervals 5, 6 are arranged in alternating order so that every second miletinae period is the first megaplatinum gap 5 and the rest miletinae intervals are second miletinae intervals of 6, see figure 4.

Each heat exchanger plate 1, see figure 5, contains four openings 7, which form channels 8 through the pack dps is Steen and forming the inputs and outputs for the two environments in the first milestoning between 5 and second milestoning intervals 6, respectively. Inputs and outputs are connected with a schematically shown the inlet and outlet pipes 9. Each heat exchanger plate 1 contains the internal zone of the heat exchanger 10 and the outer edge area 11, the passing zone 10 of the heat exchanger. The outer marginal area 11 contains or forms a surrounding flange, passing outwards from the plane p of length. The carrier plate 3 and plate 4 also have this outer edge area 11, which contains or forms a flange, passing outwards from the plane p of length. In the first embodiment, each of the reinforcing plates 2 has such a size that they are within the zone 11 of the outer edge.

In addition, each heat exchanger plate 1 is made in a known manner in the area of the heat exchanger 10 of the retainer shown in figure 13, see figure 5, in the form of at least one corrugation of ridges and troughs. Presser shown in figure 13, which is shown in figure 5, is only schematic and one example of such a picture. It should be noted that the plate 1 of the heat exchanger can have the presser illustration of various configurations.

Plate 1 heat exchanger contain extreme plate 1' of the heat exchanger on one side of the plate pack and the outer plate 1" on the opposite side of the plate pack. Next, the plates 1, 1', 1" of the heat exchanger form the two extreme milestoning PR is miucca (15 in figure 4) on the corresponding side of the plate pack. Two extreme milestoning limited period of extreme outside plate 1' and extreme heat exchanger plate 1" of the heat exchanger respectively. Reinforcing plates 2 are located outside one of the end plates 1' and 1" of the heat exchanger, respectively.

In the first embodiment, the carrier plate 3 is located directly outside the extreme plate 1' of the heat exchanger, and pressure plate 4 is located directly outside the extreme plate 1" of the heat exchanger.

The carrier plate 3 and the pressure plate 4 is not performed in the first embodiment, thermal function, i.e. no environment is passed between the end plate 1' of the heat exchanger and the carrier plate 3, or between the end plate 1" of the heat exchanger and the pressure plate 4. The carrier plate 3 and the pressure plate 4 can, therefore, be essentially flat, i.e. not to have the pressure figure 13, which is present on the plates 1 of the heat exchanger.

All of the plates, i.e. the reinforcing plate 2, the carrier plate 3, plate 1, 1', 1" of the heat exchanger and the pressure plate 4, narashima connected to one another, preferably by fusion of metal material, for example by soldering, welding or a combination of soldering and welding. The inlet and outlet pipes 9 can also be soldered to the plates, but rather to the reinforcing plate is m 2. The plates can also be narashima connected to one another by gluing. It should be noted that the plate can also be connected to each other by means of a detachable connection, in which the plate can snuggle up to each other using coupling bolts.

In the first embodiment, reinforcing plates 2 are located directly outside of the bearing plates 3 and directly outside pressure plates 4, respectively. Each reinforcing plate 2 has a primary zone 20, which is parallel to the plane p of length. The main area 20 contains a hardening figure 21, which is located near two of the channels 8 and contains at least one elongated recess, in the first embodiment, four elongated recesses 22, which pass out from the pack of plates, see figure 4, which schematically shows the cross-sectional shape of the recesses 22. In fact, the cross-sectional shape can be more smooth and, for example, be similar to a semicircular form. Hardening figure 21 preferably can be obtained together with compression compressing the reinforcing plate 2. Reinforcing plates 2, which are located next to the bearing plate 3, contains four openings, which are arranged concentrically relative to the channel 8. Prochnau the e plate 2, located next to the presser plate 4, see figure 4, are continuous, i.e. they do not contain holes.

It should be noted that the recesses need not be elongated, but may have an essentially round or square shape when viewed in the direction normal to the plane p of length. It is important to deepen 22 had a certain distribution in the plane perpendicular to the force that tends to deform the plates 1, 1', 1" of the heat exchanger in an outward direction. The recesses 22 are in the first embodiment, elongated, essentially linear over with the length being greater than the width, when viewed in the above direction of the normal. In addition, elongated recesses 22 are essentially parallel to each other. At least three elongated recesses 22 are held between two of the channels 8 in the first embodiment. It should be noted that one or more of the recesses 22 can have a length which differs from the described linear form. For example, one or more of the elongated recesses 22 can be smoothly bent or warped at an angle into two or more sections.

During operation, the pressure inside of the heat exchanger increases, and this pressure tends to open the package of plates, particularly plates 1, 1', 1" t is ploumanach, in the outward direction. With the help of an elongated recess 22 such bending in an outward direction is prevented or reduced, as the elongated recess 22 along a plane that is perpendicular essentially perpendicular to or held under a relatively large angle to the bending in an outward direction, which tends to make inner strength.

Hardening figure 21 can also be preferably performed with the opportunity to interact with the protrusion and/or recess of the clamping of the pattern plate, which is located closest to the reinforcing plate 2, i.e. in the first embodiment of the carrier plate 3 and the pressure plate 4. Due to this interaction reinforcing plate 2 can be mounted in a fixed position relative to the specified most closely spaced plates in relation to the manufacture of plate heat exchanger. Thus, there is no need to attach the reinforcing plate, for example, by spot welding to the specified most closely located to the plate in advance, for example before soldering plate heat exchanger.

Figure 6-8 shows a second variant implementation, which differs from the first variant of realization of the fact that it contains two reinforcing plate 2 instead of four reinforcing plates 2. Need is etiti, in all variants of implementation of the elements having essentially the same function are denoted by the same reference position. Reinforcing plate 2 in the second embodiment are larger than in the first embodiment, and pass over the area, including all four of the channel 8. In addition, in the second embodiment, two of the inlet and outlet pipes 9 pass from one side of the heat exchanger, and two of the inlet and outlet pipes 9 pass from opposite sides of the plate heat exchanger. Reinforcing plate 2, which is located next to the bearing plate 3, which has four through holes, which are arranged concentrically relative to the corresponding channel 8. Reinforcing plate 2, which is located next to the presser plate 4, see Fig, is continuous, i.e. it does not contain holes.

Figure 9-11 shows the third variant implementation, which differs from the first and second embodiments by the fact that it contains a reinforcing plate 32, which also forms a support plate on one side of the plate pack, and a reinforcing plate 42, which also forms a pressure plate on the opposite side of the plate pack. Reinforcing plates 32, 42 in the third embodiment, a bit more than in in the PR embodiment, and also contain the corresponding edge areas 11, forming a flange, passing outward from the plane of extent. Reinforcing plate 32 includes four through holes, which are arranged concentrically relative to the corresponding channel, while reinforcing plate 42, see 11, is continuous, i.e. it does not contain holes. In addition, one of the elongated recesses 22 each of hardening figure 21 is received in the third embodiment, an alternative design with a slightly angled end sections.

The invention is not limited to the above variants of implementation and may be changed or modified without going beyond the limits of the following claims.

1. Plate heat exchanger, containing a series of plates, each of which runs parallel to the main plane (p) of length, and which include a number of wafers (1) of the heat exchanger and at least one reinforcing plate (2, 32, 42), in which the plate (1) of the heat exchanger are arranged next to each other to form a plate pack with the first miletinae intervals (5) for the first environment and the second miletinae intervals (6) for the second medium, each of the heat exchanger plates has four through holes (7)forming the channels (8), prog is handled through the plate pack, and plate (1) heat exchanger contain at plate (1') of the heat exchanger on one side of the plate pack and the outer plate (1") of the heat exchanger on the opposite side of the plate pack, and two of these milestoning intervals (5, 6) in the stack of plates forms a corresponding extreme miletinae period on the corresponding side of the plate pack, limited towards the outside of the corresponding one of the end plates (1', 1") of the heat exchanger, and the reinforcing plate (2, 32, 42) is located outside one of the end plates (1', 1") heat exchanger, characterized in that the reinforcing plate (2, 32, 42) has a primary zone (20)parallel to the plane (p) of length and containing a hardening figure (21), which is located near two of the channels (8) and contains at least one recess (22), passing in the direction outward from the plate pack, and specified the recess extends across the plane (p) of length and apparently in the direction normal to the plane (p) of length.

2. The plate heat exchanger according to claim 1, characterized in that the plate narashima connected to one another.

3. Plate heat exchanger according to claim 2, characterized in that the plate narashima connected to one another by fusion of the metal material.

4. The plate heat exchanger according to mu the mu one of claims 1 to 3, characterized in that the reinforcing pattern (21) is arranged to communicate with the pressure figure (13) the edge of the plate (1', 1") of the heat exchanger, which is located next to the reinforcing plate (2), so that the reinforcing plate (2) is located in a predetermined position relative to the at plate (1', 1") of the heat exchanger.

5. The plate heat exchanger according to claim 1, characterized in that the recess (22) is essentially linear over.

6. The plate heat exchanger according to claim 1, characterized in that the recess (22) is held between these two channels.

7. The plate heat exchanger according to claim 1, characterized in that the reinforcing pattern (21) has multiple recesses (22), which take place in a direction outward from the plates (1) of the heat exchanger.

8. Plate heat exchanger according to claim 7, characterized in that at least one of the recesses (22) is essentially linear over.

9. Plate heat exchanger according to claim 7, characterized in that at least one of the recesses (22) is held between these two channels (8).

10. The plate heat exchanger according to claim 1, characterized in that the primary zone (20) has an essentially planar extent, and a hardening figure (21) passes in the direction outward from the plane of the length.

11. The plate heat exchanger according to claim 1, featuring the the action scene, the main zone (20) has a region that forms at least a large part of the area of the reinforcing plate (2).

12. The plate heat exchanger according to claim 1, characterized in that the reinforcing plate (2, 32, 42) includes at least two through holes, which are arranged concentrically relative to the corresponding channel (8) of these two channels (8).

13. The plate heat exchanger according to claim 1, characterized in that the reinforcing plate (2) comprises two reinforcing pattern (21), which are located near the respective pairs of channels (8) and which each includes at least one recess (22), passing in the direction outward from the plates (1) of the heat exchanger.

14. The plate heat exchanger according to item 13, wherein the reinforcing plate (2) contains at least four openings, which are arranged concentrically relative to the corresponding channel (8) of the channels (8) of the plate pack.

15. The plate heat exchanger according to claim 1, characterized in that each plate (1) of the heat exchanger has a zone (10) of the heat exchanger and the outer edge area (11), which passes around a zone (10) of the heat exchanger, and the reinforcing plate (2) has such a size that it is located inside the outer marginal zone (11).

16. The plate heat exchanger according to item 15, wherein the external edge of C is in (11) contains a surrounding flange, held in an outward direction from the plane (p) of length.

17. The plate heat exchanger according to claim 1, characterized in that the plates contain additional reinforcing plate (2, 42), which is located outside the second of the end plates (1") of the heat exchanger, and an additional reinforcing plate (2, 42) has a primary zone (20), which runs parallel to the plane (p) of length and contains a hardening figure (21), which is located near two of the channels (8) and contains at least one recess (22), passing in the direction outward from the plates (1) of the heat exchanger.



 

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25 cl, 13 dwg

FIELD: power industry.

SUBSTANCE: in manufacturing method of radiator with radiator cover the strong flexible material is applied to upper side of radiator and/or at least to one side of the radiator cover, which faces the radiator, at least in some places by means of bonding or mechanical connection, and strong flexible material forms strong and resistant combination with the surface of the radiator and/or at least with one side of the radiator cover, which faces the radiator; at that, strong flexible material is applied to prior to application of powder coating of radiator and/or cover of the radiator; after powder coating has been applied, radiator together with the radiator cover is heated to hot drying temperature of powder coating; at that, owing to thermal effect the viscosity of strong flexible material changes so that the distance appears between the radiator cover and radiator, which excludes the contact of metals between radiator and at least one cover of the radiator; at that, viscosity of strong flexible material changes within temperature range of 120 to 180C.

EFFECT: simple and economic manufacture, and eliminating the noise during operation.

4 cl, 3 dwg

FIELD: power industry.

SUBSTANCE: steam generator pipe has inner profile in the inner pipe space in order to form swirling; profile is made in the form of at least one insert containing one or several frames from plate metal with many cavities of large surface area and twisted in longitudinal direction and at least partially adjacent with its longitudinal edges to inner pipe wall.

EFFECT: designing the pipe of steam generator and once-through steam generator which has simple construction at high operating reliability and at high efficiency, low costs during the manufacture and high heat transfer characteristics during the operation.

11 cl, 6 dwg

Heat exchanger // 2411390

FIELD: engines and pumps.

SUBSTANCE: heat exchanger, namely for cooling of exhaust gases at least with one housing, at least with one first flow channel for the first medium, at least with one second flow channel for the second medium, at least with one bottom which is connected to the housing; at that, bottom has at least one compensation element.

EFFECT: improving heat exchanger design.

40 cl, 14 dwg

Heat exchanger // 2410607

FIELD: heating.

SUBSTANCE: invention relates to the field of energy industry and can be used for repeated heating of various environments. The invention lies in the fact that in the heat exchanger, comprising a body with the feeding nipple and an outlet pipe and a tube placed in its cavity, made in the form of a coil with a straight start and the end portions connected to the feeding nipple and the outlet pipe, the casing is designed in the form of a siphon filled with hot water from the drain pipe, and the coil is made of a copper pipe with high heat dissipation, spring-wound and connected with one side through the valve with the inlet pipe of cold water, and the other - through the three-way cock with the circulation capacity that is welded to the electromotor, pipe is welded to the circulation tank, connected through a rubber compound with a storage capacity, which upper part is welded to a copper pipe embedded in the upper part of the circulation capacity and welded with a tin solder to the existing heat exchanger of the refrigerator, and the coil through the three-way valve can be connected to the heat exchanger of the gas column.

EFFECT: extension of the scope due to repeated use of hot water.

1 dwg

Heat exchanger // 2402734

FIELD: heating.

SUBSTANCE: in heat exchanger comprising at least one inner heat exchanging pipe with turbulence promoter, turbulence promoter is arranged near inlet hole of heat exchange pipe and represents a cylindrical vessel with holes for inlet and outlet of fluids, inside of which along with the fluid motion there are serially arranged jet-forming nozzle and resonator plate fixed as overhanging in cylindrical vessel with two ledges, which are bowingly bent in opposite directions so that they tightly adjoin inner surface of cylindrical vessel, forming fixation of plate. Heat exchanger may comprises chamber of fluids introduction, which may be equipped with mixing and/or distributing devices. Cylindrical vessel of turbulence promoter may be represented by the section of heat exchange pipe, and additional holes may be arranged in wall of cylindrical vessel of turbulence promoter between inlet hole and jet-forming nozzle.

EFFECT: increased efficiency of heat exchanger.

5 cl, 9 dwg

FIELD: heating.

SUBSTANCE: in helical-coil heat exchanger, which has multiple tubes wound along spiral into one or several concentric layers around central pipe and forming a bundle of pipes in the form of hollow cylinder, and jacket that limits external space around pipes, in which in process of heat exchanger operation heat is transferred between flows of at least two fluid mediums, one of which moves, at least along of pipes, and the other one passes through this external space around the pipes, there is at least one non-heat-transmitting elastic structural element, which is located inside jacket of heat exchanger radially outside bundle of pipes and contains metal material, besides heat exchanger may be used at the working temperature below ambient temperature, first of all below -40C, for indirect heat exchange between hydrocarbon-containing flow and at least one heating or cooling agent, at the same time hydrocarbon-containing flow represents natural gas, and in process of indirect heat exchange it is liquefied, cooled, heated and/or evaporated.

EFFECT: helical-coil heat exchanger reliability improvement.

23 cl, 2 dwg

FIELD: heating.

SUBSTANCE: in heat exchanger comprising tubular vessel open on both end sides, where pipeline is installed intended for passage of the first coolant in it and when unrolled having length larger than length of vessel, external lining of vessel, at least in the area of the first end side there are holes, besides holes may be evenly distributed along side surface of vessel lining, share of holes area may reduce as distance increases from the first end side of vessel, besides as distance increases from the first end side, cross section of holes may reduce, and pipeline for the first coolant may be arranged in the form of spiral or meander. Specified heat exchanger may be used as condenser in refrigerating device.

EFFECT: increased efficiency of specified heat exchanger.

13 cl, 4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to corrosionproof fluid flow conducting parts and equipment comprising one or more such parts. Equipment component comprises first fluid corrosionproof flow conducting section that comprises first corrosionproof material and second fluid flow conducting section that comprises second material. First and second sections are, directly or indirectly, have their ends welded together in solid state to make integral fluid flow conducting part. Invention covers also the method of replacing at least one fluid flow conducting equipment part that proposes replacement component comprising first fluid flow conducting section that includes first material and second fluid flow conducting section that includes second material. Second material is, in fact, identical to that of equipment section whereat spare part is to be mounted. First and second sections are, directly or indirectly, have their ends welded together in solid state to make integral fluid flow conducting part. Space part is secured to equipment by flush butt welding of second material of second space part with material being, in fact identical, to that of equipment attachment section.

EFFECT: higher efficiency due to replacement with parts that feature improved corrosion resistance properties.

101 cl, 2 ex, 4 tbl, 14 dwg

FIELD: heat-exchange apparatus; liquid-to-liquid heat exchangers.

SUBSTANCE: collector chamber of shell-and-tube heat exchanger adjoining the tube sheet of tube bank includes partitions dividing it into supply and discharge compartments; they have U-shaped profile with strip located between its runs; it is made from elastic material; one end of strip is secured on tube sheet and second end is bent at 180 deg. on side of supply compartment.

EFFECT: enhanced operational reliability.

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