Fin type heat exchanger with multi-spiral structure
By employing a multi-spiral finned heat exchanger in the heat exchanger, and combining swirling and turbulent flow to enhance heat transfer, the problems of low heat transfer efficiency and difficulty in oil-water separation are solved, achieving efficient pre-separation of produced fluid and enhanced heat transfer effect.
Patent Information
- Application Number
- CN202520019629.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-06
AI Technical Summary
The low heat transfer efficiency of produced fluids in existing technologies leads to low production and processing efficiency in oil fields. In existing oil and gas gathering and transportation processes, the heat transfer efficiency of heat exchangers is reduced and the hydraulic residence time is prolonged, resulting in low production efficiency and increased difficulty in oil-water separation.
The finned heat exchanger with a multi-spiral structure combines swirling and turbulent flow to enhance heat transfer. It utilizes spiral fins and turbulent elements to form a swirling flow field, thereby enhancing the heat transfer effect, and achieves pre-separation through the inclined plate settling principle.
It improves the heat transfer efficiency of the heat exchanger, reduces fin blockage, extends the single heat exchange time of the fluid, and achieves efficient pre-separation of produced fluid and enhanced heat transfer effect.
Smart Images
Figure CN223678286U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to higher water content produced liquid heat exchange and dehydration technical field, specifically designs a kind of multi-spiral structure finned heat exchanger. BACKGROUND
[0002] With the year-by-year increase of water content of oilfield produced liquid, the heat transfer efficiency of heat exchanger in oil and gas gathering and transportation process is reduced, the hydraulic residence time in heat exchange equipment is prolonged, the heat exchange efficiency of heat exchanger is reduced, and the processing efficiency of oil and gas gathering and transportation process is greatly influenced;Meanwhile, with the increasing complexity of produced liquid emulsification, the difficulty of oil-water separation is increasing, and the separation efficiency of separation equipment is decreasing. Therefore, from the perspective of technical integration, reducing production energy consumption and improving production efficiency, it is inevitable to upgrade the original crude oil treatment equipment. SUMMARY
[0003] The utility model aims at providing a kind of finned heat exchanger of multi-spiral structure, based on the heat transfer effect of cyclone and turbulence strengthening, improve the heat transfer efficiency of heat exchanger, and reach the effect of pre-separation of high water content produced liquid by combining with the principle of inclined plate sedimentation, improve the technical problems such as easy blockage and complex maintenance of conventional finned heat exchanger.
[0004] To achieve the above object, the utility model provides the following technical scheme:
[0005] A kind of finned heat exchanger of multi-spiral structure, including shell, several groups of heat exchanger heat exchange unit structure are equipped in the shell, and each group of heat exchanger heat exchange unit structure is composed of spiral fin heat exchange pipe, turbulence element and connecting rod;Several the spiral fin heat exchange pipes are connected through the turbulence element and connecting rod arranged at intervals and form a complete heat exchange pipe, and the both ends of the heat exchange pipe are mounted on fixed tube plate respectively, and the connecting rod and the baffle fixed on the inner wall of shell are detachably connected;The spiral fin heat exchange pipe is composed of heat exchange base pipe and the multiple spiral fin of several groups of spiral fin arranged on the outer periphery of heat exchange base pipe, and the heat exchange pipe of multiple spiral structure is formed.
[0006] The spiral fin is flat plate type spiral heat exchange fin, and flat plate is arranged along the spiral line of heat exchange base pipe outer periphery and is bent, and the included angle between flat plate and heat exchange base pipe axial horizontal plane is 30 °-60 °, and acute angle is faced to backwater surface.
[0007] The spiral fin is flange type spiral heat exchange fin, and the flange type spiral heat exchange fin is fixed on the outer periphery of heat exchange base pipe after being pressed into shape;The included angle between the flange type spiral heat exchange fin and heat exchange base pipe axial horizontal plane is 30 °-60 °, and acute angle is faced to backwater surface.
[0008] The spiral fin is a flat plate with concave-convex grooves, which is arranged on the outer periphery of the heat exchange base pipe in a spiral line and is fixed to the heat exchange base pipe; the flat plate and the heat exchange base pipe form an angle of 30°-60° with the axial horizontal plane, and the acute angle faces the leeside.
[0009] The number of the spiral fins is 2-8.
[0010] The spiral fin heat exchange pipes are connected through the spacing arrangement of the turbulent flow elements and the threaded detachable through connection of the connecting rods to form a complete heat exchange pipe.
[0011] The connecting rod is provided with a fixed clamping block, which is threadedly detachably connected with the bolt hole matched on the baffle plate.
[0012] The lower end of the shell is provided with a shell side inlet connecting pipe, and the upper end is provided with a shell side outlet connecting pipe; the two ends of the shell are respectively sealed and connected through a fixed tube plate and a left head and a right head; the left head is provided with a tube side inlet connecting pipe, and the inner cavity of the left head is divided into two parts by a flow separation plate; and the right head is provided with a tube side outlet connecting pipe.
[0013] Compared with the prior art, the utility model has the following advantages:
[0014] (1) The utility model discloses a spiral fin heat exchange pipe 4, and the spiral structure of the flat plate type spiral heat exchange fin 401 continuously connects the sectional heat exchange fin structure of the traditional fin type heat exchanger, and the heat exchange fin with multiple spiral structures prolongs the single heat exchange time of fluid, thereby enhancing the heat exchange efficiency of the heat exchanger.
[0015] (2) The utility model discloses a spiral fin heat exchange pipe, and the spiral heat exchange fin structure reduces the shearing action of cold fluid in the shell, the root recess structure of the heat exchange base pipe and the spiral heat exchange fin weakens the shearing action of cold fluid on the wall surface, enhances the effect of the wall surface on the convective heat transfer of cold fluid, and reduces the shearing emulsification effect on the produced liquid.
[0016] (3) The utility model discloses a spiral fin heat exchange pipe, and the rotational flow formed by the spiral heat exchange fin is helpful for the rotational flow separation of the produced liquid and reduces the occurrence of fin blockage; meanwhile, the inclined plate structure formed between the spiral heat exchange fins forms a shallow pool theory for the separation of the produced liquid, which is helpful for the coalescence and sedimentation of the produced liquid after pre-separation.
[0017] (4) The turbulent flow element adopted by the utility model can make the produced liquid produce turbulent flow when flowing through the connecting structure, thereby enhancing the heat exchange effect of the produced liquid; meanwhile, the collision efficiency of dispersed phase droplets is improved, so that the heat exchanger can realize high-efficiency heat exchange and achieve the effect of strengthening the pre-separation of the produced liquid. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a structural schematic view of the whole heat exchanger.
[0019] Figure 2 It is the external structure schematic view of the whole heat exchanger of the utility model;
[0020] Figure 3 It is the fixed tube sheet, spiral fin heat exchange pipe and baffle assembly schematic view of the utility model;
[0021] Figure 4 It is the left head, tube side inlet connecting pipe and sub-path partition plate structure schematic view of the utility model;
[0022] Figure 5 It is the spiral fin heat exchange pipe structure schematic view of the utility model;
[0023] Figure 6 It is the flange plate type spiral fin heat exchange pipe structure schematic view of the utility model;
[0024] Figure 7 It is the spiral fin heat exchange pipe and turbulent element assembly schematic view of the utility model;
[0025] Figure 8 It is the turbulent element structure schematic view of the utility model;
[0026] Figure 9 It is the spiral fin heat exchange pipe, connecting rod and baffle assembly schematic view of the utility model;
[0027] Figure 10 It is the fixed tube sheet structure schematic view of the utility model;
[0028] Figure 11 It is the connecting rod structure schematic view of the utility model;
[0029] Reference numeral in the drawing: 1-tube side inlet connecting pipe; 2-fixed tube sheet; 3-turbulent element; 4-spiral fin heat exchange pipe; 5-shell; 6-shell side outlet connecting pipe; 7-right head; 8-sub-path partition plate; 9-left head; 10-shell side inlet connecting pipe; 11-fixed saddle; 12-baffle; 13-connecting rod; 14-tube side outlet connecting pipe; 301-turbulent element connecting thread; 401-flat plate type spiral heat exchange fin; 402-heat exchange pipe connecting thread; 403-heat exchange base pipe; 404-flange type spiral heat exchange fin; 1301-fixed clamping block; 1302-connecting rod connecting thread. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.
[0031] In the description of the utility model, it is necessary to explain that, unless otherwise stated, the meaning of "multiple" is two or more than two;The orientation or position relation indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relation shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as limiting or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0032] Referring to Figure 1 , Figure 2 , Figure 3 A multi-spiral structure finned heat exchanger, comprising a shell 5, a plurality of groups of heat exchanger heat exchange unit structures are arranged in the shell 5, each group of heat exchanger heat exchange unit structures is composed of a spiral fin heat exchange pipe 4, a turbulent element 3 and a connecting rod 13;A plurality of the spiral fin heat exchange pipes 4 are connected through the detachable turbulent elements 3 and the connecting rods 13 arranged at intervals to form a complete heat exchange pipe, the two ends of the heat exchange pipe are respectively mounted on the fixed tube plate 2, the connecting rod 13 is detachably connected with the baffle 12 fixed on the inner wall of the shell 5;The spiral fin heat exchange pipe 4 is composed of a heat exchange base pipe 403 and a plurality of groups of spiral fins arranged on the outer periphery of the heat exchange base pipe 403 to form a multi-spiral structure heat exchange pipe.
[0033] The cold and hot fluids complete heat exchange in the shell 5. The multi-spiral structure spiral fin heat exchange pipe 4 makes the rotational flow separation of the cold fluid generated when flowing through the spiral fin heat transfer, strengthens the heat transfer effect;At the same time, the root recess structure of the spiral heat exchange fin connected with the heat exchange pipe and the turbulent flow formed by the turbulent element weaken the shearing action of the produced liquid on the wall, reduce the shearing emulsification of the produced liquid, strengthen the heat transfer effect of the cold fluid;In addition, the rotational flow formed by the spiral fin and the inclined plate structure between the fins are helpful for the pre-separation of the produced liquid, which reduces the occurrence of fin fouling. The technical problems such as easy clogging, complex maintenance of the conventional finned heat exchanger in the prior art are solved, the heat transfer effect is strengthened based on the rotational flow and turbulent flow, the high-efficiency heat transfer and pre-separation effect of the produced liquid are achieved.
[0034] As shown in Figure 5 , the spiral fin is a flat plate type spiral heat exchange fin 401, which is arranged in a spiral line along the outer periphery of the heat exchange base pipe 403. The angle between the flat plate and the axial horizontal plane of the heat exchange base pipe 403 is 30°-60°, and the acute angle plane faces the backwater surface. The structure of the flat plate type spiral heat exchange fin 401 with multiple spiral structures prolongs the single fluid heat exchange time, and the formed spiral flow enhances the heat exchange effect of the spiral fin heat exchange pipe 4. In addition, the inclined plate structure formed between the flat plate type spiral heat exchange fins 401 reduces the occurrence of fin blockage, which is helpful for the inclined plate settlement of produced liquid and dehydration separation.
[0035] As shown in Figure 6 , the spiral fin is a flange type spiral heat exchange fin 404, which is welded on the outer periphery of the heat exchange base pipe 403 after being pressed into shape. The angle between the flange type spiral heat exchange fin 404 and the axial horizontal plane of the heat exchange base pipe 403 is 30°-60°, and the acute angle plane faces the backwater surface. The difference between the flange and the ordinary fin is that the cross section of the ordinary fin is rectangular, and the cross section of the flange fin is a wing type which gradually thins from the fin root to the fin edge.
[0036] The spiral fin is a flat plate with concave-convex grooves, which is arranged in a spiral line on the outer periphery of the heat exchange base pipe 403 and welded and connected with the heat exchange base pipe 403. The angle between the flat plate and the axial horizontal plane of the heat exchange base pipe 403 is 30°-60°, and the acute angle plane faces the backwater surface.
[0037] The number of spiral fins is 2-8. If the number of fins is too large, it is difficult to meet the processing precision, and it is difficult to install, or the installation difficulty is too large. If the number of fins is too large, the cold fluid such as crude oil or impurities is easy to block between the fins.
[0038] As shown in Figure 7 , Figure 8 , Figure 9 , Figure 11 The spiral fin heat exchange pipe 4 is connected through the spacing arrangement of the turbulent flow element 3 and the connecting rod 13 to form a complete heat exchange pipe. The two ends of the turbulent flow element 3, the two ends of the spiral fin heat exchange pipe 4 and the two ends of the connecting rod 13 are provided with turbulent flow element connecting threads 301, heat exchange pipe connecting threads 402 and connecting rod connecting threads 1302. One end of the heat exchange pipe connecting thread 402 is connected with the turbulent flow element connecting thread 301 of the turbulent flow element 3, and the other end is connected with the connecting rod connecting thread 1302 of the connecting rod 13. The spiral fin heat exchange pipe can be disassembled and replaced easily.
[0039] As shown in Figure 8As shown, the turbulent flow element 3 is a spherical structure, and the spherical appearance can make the flowing fluid form a turbulent flow, improve the heat transfer efficiency, and promote the collision and settling separation of the dispersed phase droplets.
[0040] The turbulent flow elements 3 are uniformly spaced on both sides of the spiral fin heat exchange pipe 4, and the shell side heat exchange pipe adopts the same layout mode, which is convenient for later maintenance and replacement.
[0041] As shown in the figure, Figure 11 As shown, the connecting rod 13 is provided with a fixed clamping block 1301 which is threadedly detachably connected with the bolt hole on the baffle plate 12.
[0042] The heat exchange unit structure of the heat exchanger is arranged in a regular triangle, an inverted triangle or a square in the shell 5.
[0043] The lower end of the shell 5 is provided with a shell side inlet connecting pipe 10, and the upper end is provided with a shell side outlet connecting pipe 6. Figure 4 The left end of the shell 5 is connected with the fixed tube plate 2 through the flange of the shell, and the right end is connected with the left head 9 and the right head 7 through the flanges of the shell.
[0044] The working principle of the heat exchanger is as follows: the oilfield produced liquid as a cold fluid passes through the shell side inlet connecting pipe 10 of the heat exchanger, and the hot fluid passes through the tube side inlet connecting pipe 1 and enters the heat exchanger. When the produced liquid flows through the heat transfer of the multi-spiral structure of the spiral fin, the spiral fin structure forms a spiral flow field, and the inclined plate structure formed between the spiral fins helps the dehydration and pre-separation of the produced liquid, and reduces the occurrence of fin pollution. In addition, the recess structure at the connection between the spiral fin and the heat exchange base pipe weakens the shearing effect of the produced liquid on the wall surface of the spiral fin heat exchange pipe, reduces the shearing emulsification of the produced liquid, and strengthens the heat transfer effect of the cold fluid. After flowing through the spiral fin, the turbulent flow element 3 forms a turbulent flow field, which not only strengthens the heat transfer effect, but also improves the effective collision of the dispersed phase droplets, and promotes the effective separation of the produced liquid.
[0045] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A multi-spiral finned heat exchanger comprising a housing, characterized in that: The shell (5) is internally provided with a plurality of groups of heat exchanger heat exchange unit structures, each group of heat exchanger heat exchange unit structures being composed of a spiral fin heat exchange pipe (4), a turbulent element (3) and a connecting rod (13); a plurality of the spiral fin heat exchange pipes (4) are connected through the spaced turbulent elements (3) and the connecting rods (13) to form a complete heat exchange pipe, both ends of the heat exchange pipe being respectively mounted on the fixed tube plate (2), the connecting rod (13) being detachably connected with the baffle (12) fixed on the inner wall of the shell (5); the spiral fin heat exchange pipe (4) is composed of a heat exchange base pipe (403) and a plurality of groups of spiral fins arranged on the outer periphery of the heat exchange base pipe (403) to form a multi-spiral structure heat exchange pipe.
2. A multi-spiral finned heat exchanger according to claim 1, wherein The spiral fin is a flat plate type spiral heat exchange fin (401), which is arranged in a spiral line along the outer periphery of the heat exchange base pipe (403), the included angle between the flat plate and the axial horizontal plane of the heat exchange base pipe (403) being 30-60°, the acute angle being directed to the backwater surface.
3. A multi-spiral finned heat exchanger as claimed in claim 1, wherein, The spiral fin is a flange type spiral heat exchange fin (404), which is formed by pressing and then fixed on the outer periphery of the heat exchange base pipe (403); the included angle between the flange type spiral heat exchange fin (404) and the axial horizontal plane of the heat exchange base pipe (403) is 30-60°, the acute angle being directed to the backwater surface.
4. A multi-spiral finned heat exchanger as claimed in claim 1, wherein, The spiral fin is a flat plate with concave-convex grooves, which is arranged in a spiral line along the outer periphery of the heat exchange base pipe (403) and then fixed with the heat exchange base pipe (403); the included angle between the flat plate and the axial horizontal plane of the heat exchange base pipe (403) is 30-60°, the acute angle being directed to the backwater surface.
5. A multi-spiral finned heat exchanger as claimed in any one of claims 1 to 4, wherein, The number of the spiral fins is 2-8.
6. A multi-spiral finned heat exchanger as claimed in claim 1, wherein, The spiral fin heat exchange pipes (4) are threadedly and detachably connected through the spaced turbulent elements (3) and the connecting rods (13) to form a complete heat exchange pipe.
7. A multi-spiral finned heat exchanger as claimed in claim 1, wherein The connecting rod (13) is provided with a fixed clamping block (1301), which is threadedly and detachably connected with the bolt hole on the baffle (12).
8. A multi-spiral finned heat exchanger as claimed in claim 1, wherein, The lower end of the shell (5) is provided with a shell side inlet connecting pipe (10) on one side, and the upper end is provided with a shell side outlet connecting pipe (6) on the other side, the two ends of the shell (5) being respectively sealed and connected through the fixed tube plate (2) and the left head (9) and the right head (7); the left head (9) is provided with a tube side inlet connecting pipe (1), and the inner cavity of the left head (9) is divided into two parts by a partition plate (8); the right head (7) is provided with a tube side outlet connecting pipe (14).