CN220083757U - High-strength filler strip welding type winding pipe heat exchanger - Google Patents

Abstract

The utility model discloses a high-strength filler strip welded type winding pipe heat exchanger, and particularly relates to the technical field of heat exchangers, which comprises a core barrel and an outer cover sleeved on the outer side of the core barrel, wherein a first heat exchange channel is formed between the core barrel and the outer cover, a first spiral winding pipe is arranged in the first heat exchange channel, a medium with high flow can be introduced into the first heat exchange channel, and heat exchange is performed by utilizing a cold source or a heat source conveyed by the first spiral winding pipe; the core barrel is internally provided with a second heat exchange channel along the axial direction, at least one layer of second spiral winding pipe is arranged in the second heat exchange channel, medium with small flow can be introduced into the second heat exchange channel, heat exchange is carried out by utilizing a cold source or a heat source conveyed by the second spiral winding pipe, the heat exchange channel selection of medium with large flow or small flow is realized, and the application range is wide; the first filler strip is welded on the outer side of the second spiral winding pipe, so that the structural strength of the whole second spiral winding pipe is enhanced, and the heat exchanger is prevented from vibrating during working.

Description

High-strength filler strip welding type winding pipe heat exchanger

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to a high-strength filler strip welding type winding tube heat exchanger.

Background

The winding pipe type heat exchanger is not only important unit equipment in the large petrochemical production process, but also energy-saving equipment. The traditional shell-and-tube heat exchanger has the defects of limited heat exchange tube length and smaller heat exchange area in unit volume. The winding tube type heat exchanger has the characteristics of compact structure, large heat exchange area, high heat transfer efficiency, low energy consumption, small occupied area and the like, and the winding tube type heat exchanger can realize simultaneous heat exchange of multiple media due to the structural characteristics, and is used in the fields of oil refining, coal chemical industry, methanol production, fine chemical industry and the like in an increasingly wide range, so that the market demand for the winding tube type heat exchanger is also increasingly large.

Wound tube heat exchangers typically have multiple layers of helically wound tubes, with the intention of spacing the layers of helically wound tubes, a spacer strip, such as the one described in chinese patent application No.: in the directly-inserted filler strip type winding tube type heat exchanger disclosed by the specification of CN202011206861. X, the directly-inserted filler strip is radially arranged on a core tube of the winding tube type heat exchanger, a medium transversely flows through the directly-inserted filler strip to form turbulent flow between heat exchange tubes, a tail flow field formed by a tube bundle is strengthened, and a flow boundary layer and a thermal boundary layer of the outer wall surface of the heat exchange tubes are effectively reduced. Two rows of positioning grooves are arranged on the direct-insert type backing strip; the first row of positioning grooves comprise a plurality of first positioning grooves arranged along the length direction of the filler strip body, and the second row of positioning grooves comprise a plurality of second positioning grooves arranged along the length direction of the filler strip body; the first positioning grooves and the second positioning grooves are arranged in a staggered mode, the first positioning grooves are used for positioning the odd-numbered/even-numbered layer heat exchange tubes respectively, and the second positioning grooves are used for positioning the even-numbered/odd-numbered layer heat exchange tubes respectively.

The above disclosed wound tube heat exchanger has the following problems: 1. the multi-layer heat exchange tubes are only distributed in the space between the outer cylinder and the core cylinder of the heat exchanger, and the space of the outer cylinder of the heat exchanger is large, so that the heat exchange tubes are only suitable for heat exchange of large-flow media, and the application range is small; 2. the filler strip is directly placed in the gap between two adjacent heat exchange tubes, and is easy to shake, the structural strength of the whole heat exchange tube layer is low, and the heat exchanger is easy to vibrate during working. Therefore, there is a need to design a high strength filler strip welded wound tube heat exchanger that can solve the above-mentioned problems.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present utility model aims to provide a high-strength gasket welded type wound tube heat exchanger, so as to solve the problem of small application range of the wound tube heat exchanger in the prior art and the problem of low structural strength of the whole heat exchange tube layer caused by shaking of the gasket.

The utility model provides a high strength filler strip welded type winding pipe heat exchanger, is in including a core section of thick bamboo, cover the dustcoat in the core section of thick bamboo outside, the core section of thick bamboo with form first heat transfer passageway between the dustcoat, be equipped with two-layer at least first spiral winding pipe in the first heat transfer passageway, have in the core section of thick bamboo along axial second heat transfer passageway, be equipped with at least one deck second spiral winding pipe in the second heat transfer passageway, the outside welding of second spiral winding pipe has first filler strip, first filler strip still with core section of thick bamboo medial surface welding.

Specifically, be equipped with the first spacing groove that a plurality of intervals set up on the first filler strip, the outer wall card of second spiral winding pipe is gone into in the first spacing groove.

Specifically, each layer of first spiral winding pipe is formed by winding a single pipe or a plurality of pipes, and the spiral directions of two adjacent layers of first spiral winding pipes are opposite.

Specifically, two adjacent layers the welding has the second filler strip between the first spiral winding pipe, the upper and lower both ends face of second filler strip all is equipped with the second spacing groove that a plurality of intervals set up, the outer wall card of first spiral winding pipe is gone into in the second spacing groove.

Specifically, the core barrel comprises a first shell and a second shell, wherein the first shell and the second shell are of semicircular cylindrical structures, one end of the first shell is rotationally connected with one end of the second shell, and the other end of the first shell is buckled and connected with the other end of the second shell.

Specifically, the outside of the end part of the core barrel is also provided with a sealing ring.

Specifically, be equipped with first feed inlet, first discharge gate on the dustcoat, first feed inlet, first discharge gate all with first heat transfer passageway intercommunication.

Specifically, a first end cover and a second end cover are respectively fixed at the front end and the rear end of the outer cover, a first extension pipe is connected to the first end cover, a first pipe inlet hole along the axial direction is formed in the first extension pipe, one end of the core barrel is connected with the first pipe inlet hole, the feeding end of the second spiral winding pipe enters the second heat exchange channel from the first pipe inlet hole, and a second feeding hole communicated with the second heat exchange channel is formed in the first extension pipe; the second end cover is connected with a second extension pipe, a first pipe outlet hole along the axial direction is formed in the second extension pipe, the other end of the core barrel is connected with the first pipe outlet hole, the discharge end of the second spiral winding pipe extends out from the first pipe outlet hole, and a second discharge hole communicated with the second heat exchange channel is formed in the second extension pipe.

Specifically, a second pipe inlet hole is further formed in the first end cover, and the feeding end of the first spiral winding pipe enters the first heat exchange channel from the second pipe inlet hole; and a second pipe outlet hole is further formed in the second end cover, and the discharge end of the first spiral winding pipe extends out of the second pipe outlet hole.

Specifically, the inside both ends of dustcoat all are equipped with the mounting panel, be equipped with a plurality of mounting holes on the mounting panel, the tip of first spiral winding pipe passes the mounting hole.

The utility model has the beneficial effects that:

according to the high-strength filler strip welded type winding pipe heat exchanger, a first heat exchange channel is formed between the core barrel and the outer cover, a first spiral winding pipe is arranged in the first heat exchange channel, medium with high flow can be introduced into the first heat exchange channel, and heat exchange is carried out by utilizing a cold source or a heat source conveyed by the first spiral winding pipe; the core barrel is internally provided with a second heat exchange channel along the axial direction, at least one layer of second spiral winding pipe is arranged in the second heat exchange channel, medium with small flow can be introduced into the second heat exchange channel, heat exchange is carried out by utilizing a cold source or a heat source conveyed by the second spiral winding pipe, the heat exchange channel selection of medium with large flow or small flow is realized, and the application range is wide; the first filler strip is welded on the outer side of the second spiral winding pipe, so that the structural strength of the whole second spiral winding pipe is enhanced, and the heat exchanger is prevented from vibrating during working.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a perspective view of a high strength filler strip welded wrapped tube heat exchanger of the present utility model;

FIG. 2 is a left side view of a high strength filler strip welded wrapped tube heat exchanger of the present utility model;

FIG. 3 is a cross-sectional view taken along the A-A plane in FIG. 2;

FIG. 4 is an exploded view of a high strength filler strip welded wrapped tube heat exchanger of the present utility model;

FIG. 5 is an enlarged view of portion B of FIG. 4;

FIG. 6 is a schematic view of the open structure of the cartridge of the present utility model;

FIG. 7 is an enlarged view of portion C of FIG. 6;

fig. 8 is a schematic structural view of the mounting plate of the present utility model.

The reference numerals are: the heat exchange tube comprises a core tube 10, a housing 20, a first heat exchange channel 23, a first spiral winding tube 30, a second heat exchange channel 101, a second spiral winding tube 40, a first backing strip 50, a first limit groove 51, a second backing strip 60, a second limit groove 61, a first shell 11, a second shell 12, a sealing ring 13, a first feed inlet 21, a first discharge outlet 22, a first end cover 70, a second end cover 80, a first extension tube 71, a first feed inlet hole 72, a second feed inlet 73, a second extension tube 81, a first discharge outlet hole 82, a second discharge outlet 83, a second feed inlet hole 74, a second discharge outlet hole 84, a mounting plate 90 and a mounting hole 91.

Detailed Description

The utility model provides a high-strength filler strip welded type winding pipe heat exchanger, which is further described in detail below with reference to the accompanying drawings and examples in order to make the purposes, the technical scheme and the effects of the utility model clearer and more definite. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

As shown in fig. 1 to 8:

the embodiment discloses a high strength filler strip welded type winding pipe heat exchanger, including a core barrel 10, the cover 20 of cover in the core barrel 10 outside, form first heat transfer passageway 23 between core barrel 10 and the cover 20, be equipped with two-layer at least first spiral winding pipe 30 in the first heat transfer passageway 23, have in the core barrel 10 along axial second heat transfer passageway 101, be equipped with at least one layer second spiral winding pipe 40 in the second heat transfer passageway 101, the outside welding of second spiral winding pipe 40 has first filler strip 50, first filler strip 50 still welds with the inner side of core barrel 10.

In the filler strip welded type winding pipe heat exchanger of the embodiment, a first heat exchange channel 23 is formed between the core barrel 10 and the outer cover 20, at least two layers of first spiral winding pipes 30 are arranged in the first heat exchange channel 23, medium with high flow can be introduced into the first heat exchange channel 23, and heat exchange is carried out by utilizing a cold source or a heat source conveyed by the first spiral winding pipes 30; the second heat exchange channel 101 along the axial direction is arranged in the core barrel 10, at least one layer of second spiral winding pipe 40 is arranged in the second heat exchange channel 101, medium with small flow can be introduced into the second heat exchange channel 101, heat exchange is carried out by utilizing a cold source or a heat source conveyed by the second spiral winding pipe 40, heat exchange channel selection of medium with large flow or small flow is realized, and the application range is wide.

In the filler strip welded type wound tube heat exchanger of the embodiment, the first filler strip 50 is welded on the outer side of the second spiral wound tube 40, the first filler strip 50 is welded with the inner side surface of the core barrel 10, the first filler strip 50 is fixed on the inner side surface of the core barrel 10 through welding, and the second spiral wound tube 40 is fixed with the first filler strip 50 through welding, so that the structural strength of the whole second spiral wound tube 40 is enhanced, and vibration of the heat exchanger during working is prevented.

As shown in fig. 6 and 7, the first spacer 50 is provided with a plurality of first limiting grooves 51 arranged at intervals, the first limiting grooves 51 are arranged at intervals along the length direction of the first spacer 50, the outer wall of the second spiral winding pipe 40 is clamped into the first limiting grooves 51, the first limiting grooves 51 are of arc-shaped structures, the shape of the first limiting grooves is matched with that of the outer wall of the second spiral winding pipe 40, the second spiral winding pipe 40 can be prevented from deviating, the second spiral winding pipe 40 is enabled to keep an equidistant spiral structure, and the structure is stable.

As shown in fig. 4 and 5, each layer of the first spirally wound tube 30 is formed by winding a plurality of tubes, the spiral directions of the adjacent two layers of the first spirally wound tubes 30 are opposite, the flowing state of the fluid in the adjacent two layers of the first spirally wound tubes 30 is changed, the fluid in the first heat exchange channel 23 forms strong turbulence, the spiral flow in the first heat exchange channel 23 is enhanced, and the heat exchange efficiency of the medium in the first heat exchange channel 23 is improved.

As shown in fig. 5, two adjacent layers of first spiral winding pipes 30 are arranged at intervals through second filler strips 60, the second filler strips 60 are welded and fixed with the first spiral winding pipes 30, a plurality of second limit grooves 61 are formed in the upper end face and the lower end face of each second filler strip 60 at intervals, the outer walls of the first spiral winding pipes 30 are clamped into the second limit grooves 61, the second filler strips 60 are arranged to prevent contact between the two adjacent layers of first spiral winding pipes 30, so that noise and vibration are reduced, the second filler strips 60 and the first spiral winding pipes 30 are welded and fixed to prevent the first spiral winding pipes 30 from moving, the second limit grooves 61 are arc-shaped structures, the shapes of the second limit grooves are matched with the shapes of the outer walls of the first spiral winding pipes 30, the first spiral winding pipes 30 can be prevented from deviating, the first spiral winding pipes 30 are enabled to keep an equidistant spiral structure, and the structural stability of the heat exchanger is improved.

As shown in fig. 6 and 7, the core barrel 10 includes a first casing 11 and a second casing 12, where the first casing 11 and the second casing 12 are in a semicircular cylindrical structure, and one end of the first casing 11 is rotationally connected with one end of the second casing 12, and the other end is buckled and connected with the other end; before the second spiral winding tube 40 is installed, the first shell 11 and the second shell 12 need to be opened, a mandrel is prepared, the second spiral winding tube 40 is wound on the mandrel, the second spiral winding tube 40 is formed in a spiral mode, the first filler strip 50 is welded on the outer side of the second spiral winding tube 40, the appearance of the second spiral winding tube 40 is fixed, the mandrel is pulled out, the second spiral winding tube 40 is placed on the first shell 11, then the first filler strip 50 is welded with the inner side face of the first shell 11, the second shell 12 is covered, the core barrel 10 is of a cylindrical structure, and the installation difficulty is low.

As shown in fig. 4, a sealing ring 13 is further provided on the outer side of the end of the core barrel 10, and by providing the sealing ring 13, the leakage of the medium from the edge of the core barrel 10 can be avoided after the core barrel 10 is mounted, and good sealing performance is achieved.

As shown in fig. 1, a first feed inlet 21 and a first discharge outlet 22 are arranged on the outer cover 20, the first feed inlet 21 and the first discharge outlet 22 are both communicated with a first heat exchange channel 23, medium with large flow is fed from the position of the first feed inlet 21, and exchanges heat with a cold source or a heat source conveyed by the first spiral winding pipe 30 in the process of passing through the first heat exchange channel 23, and after the heat exchange is completed, the medium is discharged through the first discharge outlet 22, so that the structure is simple, and the heat exchange efficiency is high.

As shown in fig. 1 and 3, a first end cover 70 is fixed at the front end of the outer cover 20, a first extension pipe 71 is connected to the first end cover 70, a first inlet pipe hole 72 along the axial direction is provided in the first extension pipe 71, one end of the core barrel 10 is connected to the first inlet pipe hole 72, the inlet end of the second spiral winding pipe 40 enters the second heat exchange channel 101 from the first inlet pipe hole 72, a second inlet 73 communicated with the second heat exchange channel 101 is provided on the first extension pipe 71, and medium with small flow rate is fed from the position of the second inlet 73 and exchanges heat with a cold source or a heat source conveyed by the second spiral winding pipe 40 in the process of passing through the second heat exchange channel 101.

As shown in fig. 1 and 3, the rear end of the outer cover 20 is fixed with a second end cover 80, the second end cover 80 is connected with a second extension pipe 81, a first pipe outlet 82 along the axial direction is arranged in the second extension pipe 81, the other end of the core barrel 10 is connected with the first pipe outlet 82, the discharge end of the second spiral winding pipe 40 extends out from the first pipe outlet 82, the second extension pipe 81 is provided with a second discharge port 83 communicated with a second heat exchange channel 101, and after the heat exchange of the medium with small flow rate in the second heat exchange channel 101 is completed, the medium is discharged through the second discharge port 83, and the structure is simple and the heat exchange efficiency is high.

As shown in fig. 1, the first end cover 70 is further provided with a second pipe inlet hole 74, and the feeding end of the first spiral winding pipe 30 enters the first heat exchange channel 23 from the second pipe inlet hole 74; the second end cover 80 is also provided with a second pipe outlet hole 84, the discharge end of the first spiral winding pipe 30 extends out from the second pipe outlet hole 84, the structure is simple, and the installation difficulty of the first spiral winding pipe 30 is low.

As shown in fig. 8, mounting plates 90 are respectively disposed at two ends of the inner side of the outer cover 20, a plurality of mounting holes 91 are disposed on the mounting plates 90, and the ends of the first spiral wound pipes 30 pass through the mounting holes 91, so that the first spiral wound pipes 30 are fixed by the mounting holes 91, and the first spiral wound pipes 30 are prevented from being scattered.

While the preferred embodiment of the present utility model has been described in detail, the utility model is not limited to the embodiments, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the utility model, and these equivalent modifications and substitutions are intended to be included in the scope of the utility model as defined in the appended claims.

Claims (10)

1. The utility model provides a high strength filler strip welded type winding pipe heat exchanger, is in including core section of thick bamboo (10), cover dustcoat (20) in the core section of thick bamboo (10) outside, its characterized in that, core section of thick bamboo (10) with form first heat transfer passageway (23) between dustcoat (20), be equipped with two-layer at least first spiral winding pipe (30) in first heat transfer passageway (23), have in core section of thick bamboo (10) along axial second heat transfer passageway (101), be equipped with at least one deck second spiral winding pipe (40) in second heat transfer passageway (101), the outside welding of second spiral winding pipe (40) has first filler strip (50), first filler strip (50) still with core section of thick bamboo (10) medial surface welding.

2. The high-strength filler strip welded type wound tube heat exchanger as claimed in claim 1, wherein the first filler strip (50) is provided with a plurality of first limit grooves (51) arranged at intervals, and the outer wall of the second spiral wound tube (40) is clamped into the first limit grooves (51).

3. The high-strength filler strip welded type wound tube heat exchanger as claimed in claim 1, wherein each layer of the first spirally wound tube (30) is formed by winding a single tube or a plurality of tubes, and the spiral directions of the adjacent two layers of the first spirally wound tubes (30) are opposite.

4. The high-strength filler strip welded type wound tube heat exchanger as claimed in claim 1, wherein a second filler strip (60) is welded between two adjacent layers of the first spiral wound tubes (30), a plurality of second limit grooves (61) are arranged at intervals on the upper end surface and the lower end surface of the second filler strip (60), and the outer wall of the first spiral wound tube (30) is clamped into the second limit grooves (61).

5. The high-strength filler strip welded wound tube heat exchanger as claimed in claim 1, wherein the core tube (10) comprises a first shell (11) and a second shell (12), the first shell (11) and the second shell (12) are of semicircular tubular structures, and the first shell (11) is rotatably connected with one end of the second shell (12) and the other end is buckled and connected with the other end.

6. The high-strength filler strip welded wound tube heat exchanger as claimed in claim 1, wherein a sealing ring (13) is further provided on the outside of the end of the core barrel (10).

7. The high-strength filler strip welded wound tube heat exchanger as claimed in claim 1, wherein the outer cover (20) is provided with a first feed port (21) and a first discharge port (22), and the first feed port (21) and the first discharge port (22) are both communicated with the first heat exchange channel (23).

8. The high-strength filler strip welded wound tube heat exchanger according to claim 1, wherein a first end cover (70) and a second end cover (80) are respectively fixed at the front end and the rear end of the outer cover (20), a first extension tube (71) is connected to the first end cover (70), a first inlet tube hole (72) along the axial direction is formed in the first extension tube (71), one end of the core tube (10) is connected with the first inlet tube hole (72), a feeding end of the second spiral wound tube (40) enters the second heat exchange channel (101) from the first inlet tube hole (72), and a second feeding hole (73) communicated with the second heat exchange channel (101) is formed in the first extension tube (71); the second end cover (80) is connected with a second extension pipe (81), a first pipe outlet hole (82) along the axial direction is formed in the second extension pipe (81), the other end of the core barrel (10) is connected with the first pipe outlet hole (82), the discharge end of the second spiral winding pipe (40) extends out of the first pipe outlet hole (82), and a second discharge hole (83) communicated with the second heat exchange channel (101) is formed in the second extension pipe (81).

9. The high-strength filler strip welded type wound tube heat exchanger as claimed in claim 8, wherein a second tube inlet hole (74) is further provided in the first end cap (70), and the feed end of the first spiral wound tube (30) enters the first heat exchange passage (23) from the second tube inlet hole (74); the second end cover (80) is also provided with a second pipe outlet hole (84), and the discharge end of the first spiral winding pipe (30) extends out from the second pipe outlet hole (84).

10. The high-strength filler strip welded type wound tube heat exchanger as claimed in claim 1, wherein mounting plates (90) are respectively arranged at two ends of the inner side of the outer cover (20), a plurality of mounting holes (91) are formed in the mounting plates (90), and the end portions of the first spiral wound tubes (30) penetrate through the mounting holes (91).