A spiral pipe heat exchanger

Abstract

The application discloses a spiral pipe heat exchanger and belongs to the technical field of heat exchange equipment. The heat exchanger comprises a tank body, two groups of flow guide mechanisms and two flanges, the upper and lower sides of the tank body are respectively provided with a lead-in assembly and a lead-out assembly, the two groups of flow guide mechanisms are horizontally and symmetrically arranged in the tank body, the flow guide mechanism comprises an outer partition plate, an inner partition plate and a plurality of flow guide pipes, the outer partition plate and the inner partition plate are vertically arranged at the middle and end positions of the tank body respectively, the plurality of flow guide pipes are all spiral, and the two ends of the plurality of flow guide pipes are respectively sleeved in the inner parts of the outer partition plate and the inner partition plate, the plurality of flow guide pipes are divided into groups, each group has three flow guide pipes, the three flow guide pipes in the same group are distributed in an equilateral triangle shape, the materials and specifications of all the flow guide pipes are the same, the area between the two inner partition plates is a fusion cavity, the area between the inner partition plate and the outer partition plate is a heat exchange cavity, and the two groups of flow guide mechanisms are rotationally arranged in the tank body. The application effectively solves the problem that the installation of the pipe body is a fixed structure, the pipe body cannot be fully contacted with the medium, and the fullness and uniformity of heat exchange are affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchange equipment, in particular to a spiral pipe heat exchanger. BACKGROUND

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid, also known as a heat exchanger. The heat exchanger is an energy-saving device that transfers heat between two or more fluids at different temperatures, allowing heat to be transferred from a fluid with a higher temperature to a fluid with a lower temperature to meet the process requirements and improve energy utilization.

[0003] The heat exchangers on the market now mostly use a row of pipe structure for heat exchange, i.e. a plurality of pipes are installed inside the shell along the flow direction of the medium fluid for heat exchange. For example, the invention patent application with publication number CN117948813A discloses a spiral pipe heat exchanger, the invention patent with publication number CN119436907B discloses a spiral sleeve heat exchanger, and the invention patent application with publication number CN115342661A discloses a spiral pipe heat exchanger. In the above heat exchangers, a plurality of pipes are immersed in the heat exchange medium to achieve heat exchange. However, the installation of the pipe body is mostly a fixed structure, the flow guide path is fixed, and the heat exchange medium flow path is limited, so that the pipe cannot be fully contacted with the medium, affecting the fullness and uniformity of heat exchange. SUMMARY

[0004] The present application aims to provide a spiral pipe heat exchanger to solve the problem of insufficient heat exchange caused by the short path of the straight pipe flow guide pipe immersed in the medium.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] A spiral pipe heat exchanger, comprising a tank body, two groups of flow guide mechanisms and two flanges, the tank body is horizontally arranged, and the left and right ends are respectively an inlet and an outlet, the two flanges are respectively fixedly installed at the outer ends of the inlet and the outlet, and the tank body is provided with an inlet assembly and an outlet assembly on the upper and lower sides;

[0007] The two groups of flow guide mechanisms are horizontally and symmetrically arranged in the tank body, the flow guide mechanism comprises an outer partition plate, an inner partition plate and a plurality of flow guide pipes, the outer partition plate and the inner partition plate are respectively arranged vertically at the middle and end positions of the tank body, the plurality of flow guide pipes are spiral-shaped and horizontally arranged between the outer partition plate and the inner partition plate, and the two ends are respectively sleeved inside the outer partition plate and the inner partition plate;

[0008] The plurality of guide pipes are divided into groups, each group having three guide pipes, and the three guide pipes in the same group are distributed in an equilateral triangle, all the guide pipes have the same material and specification and have good heat conduction performance.

[0009] The area between the two inner baffles is a fusion cavity for mixing heat exchange liquid, and the area between the inner baffle and the outer baffle is a heat exchange cavity for heat transfer.

[0010] The two groups of guide mechanisms are rotationally arranged in the tank body.

[0011] Preferably, the import assembly includes a plurality of input pipes, a connecting pipe and a plurality of pressure valve devices, the plurality of input pipes are divided into two groups and are vertically fixedly sleeved on the upper side of the tank body, the plurality of pressure valve devices are fixedly installed on the plurality of input pipes respectively, the connecting pipe is horizontally arranged and fixedly installed at the top end of the plurality of input pipes and is in communication with the plurality of input pipes for guiding the import of heat exchange medium.

[0012] Preferably, the export assembly includes an elbow pipe and an output pipe, the elbow pipe is in a U shape, both ends of the elbow pipe are vertically fixedly sleeved on the bottom side of the tank body and are in communication with the two heat exchange cavities respectively, and the output pipe is vertically fixedly installed on the bottom side of the elbow pipe and is in communication with the elbow pipe.

[0013] Preferably, a plurality of first sealing plates are rotationally installed in the inner part of the outer baffle, a plurality of second sealing plates are rotationally installed in the inner part of the inner baffle, both ends of the three guide pipes in the same group are fixedly sleeved in two opposite first sealing plates and second sealing plates respectively, a power mechanism is arranged in the middle part of the inner baffle and the outer baffle, and a slewing mechanism is arranged in the inner part of the inner baffle.

[0014] Preferably, the power mechanism includes a main shaft and a turbine, the main shaft is horizontally penetrated and fixedly sleeved in the middle part of the inner baffle and the outer baffle, the turbine is fixedly sleeved at the end of the main shaft close to the tank body, the two turbines are opposite in guide direction, the outer circle of the outer baffle is rotationally connected with the inner wall of the tank body through a sealing bearing, the outer circle of the sealing bearing is fixedly connected with the inner wall of the tank body, and the outer circle of the outer baffle is fixedly connected with the inner circle of the sealing bearing.

[0015] Preferably, the slewing mechanism includes a first gear ring and a plurality of second gear rings, the first gear ring is fixedly sleeved on the inner wall of the tank body, the inner baffle is rotationally sleeved in the first gear ring, and the plurality of second gear rings are fixedly sleeved on the outer circles of the plurality of second sealing plates and are meshingly connected with the first gear ring.

[0016] Preferably, the end of each of the plurality of guide pipes in the fusion cavity is fixedly sleeved with a gear, a plurality of third gear rings are fixedly installed on the inner side end of the inner baffle through a connecting piece, the plurality of third gear rings are respectively arranged concentrically with the plurality of second sealing plates and are meshingly connected with the corresponding three gears.

[0017] The beneficial effects of the present application are as follows:

[0018] 1. In the cooperation of two groups of flow guide mechanisms, the target liquid realizes the sequence of heat exchange-fusion-heat exchange-fusion from right to left, and further realizes the sufficiency of heat exchange;

[0019] 2. In the cooperation of power mechanism and rotation mechanism, the flow guide pipe realizes the revolution with the inner and outer baffle plates, and also realizes the self-rotation operation condition, the medium liquid is disturbed in rotation and transverse spiral pushing, so that the medium liquid fully flows and contacts the flow guide pipe more fully in a short time, and the sufficient heat exchange is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic diagram of a spiral pipe heat exchanger proposed by the present application;

[0021] Figure 2 It is a three-dimensional local cross-section structure schematic diagram of a spiral pipe heat exchanger proposed by the present application;

[0022] Figure 3 It is a front view local cross-section structure schematic diagram of a spiral pipe heat exchanger proposed by the present application;

[0023] Figure 4 It is a front view local cross-section structure schematic diagram of a flow guide mechanism in a spiral pipe heat exchanger proposed by the present application;

[0024] Figure 5 It is an enlarged view of structure A in Figure 2 ;

[0025] Figure 6 It is an enlarged view of structure B in Figure 4 ;

[0026] In the figure: 1, tank body; 2, flange; 3, liquid inlet; 4, liquid outlet; 5, outer baffle plate; 6, inner baffle plate; 7, flow guide pipe; 8, fusion cavity; 9, leg; 10, input pipe; 11, connecting pipe; 12, pressure valve device; 13, heat exchange cavity; 14, elbow; 15, output pipe; 16, first sealing plate; 17, second sealing plate; 18, main shaft; 19, turbine; 20, sealing bearing; 21, first gear ring; 22, second gear ring; 23, gear; 24, connecting piece; 25, third gear ring. DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, only some of the embodiments of the present application are described, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0028] Refer to Figures 1-6 A spiral tube heat exchanger, comprising a tank body 1, two groups of flow guide mechanisms and two flanges 2, the tank body 1 is horizontally arranged, and the left and right ends are respectively a liquid outlet 4 and a liquid inlet 3, the two flanges 2 are respectively fixedly installed at the outer ends of the liquid inlet 3 and the liquid outlet 4, the tank body 1 is provided with a guide-in assembly and a guide-out assembly on the upper and lower sides respectively for guiding the flow of the medium, two supporting legs 9 are vertically and fixedly installed on the bottom side of the tank body 1 symmetrically for fixing the tank body 1, the two groups of flow guide mechanisms are horizontally and symmetrically arranged in the tank body 1, the flow guide mechanism comprises an outer baffle 5, an inner baffle 6 and a plurality of flow guide pipes 7, the outer baffle 5 and the inner baffle 6 are vertically arranged at the middle and end positions of the tank body 1 respectively, the plurality of flow guide pipes 7 are all spiral, and are horizontally arranged between the outer baffle 5 and the inner baffle 6, and are sleeved at the inner portions of the outer baffle 5 and the inner baffle 6 at both ends, the plurality of flow guide pipes 7 are divided into groups, each group has three, the three flow guide pipes 7 in the same group are distributed in an equilateral triangle, the materials and specifications of all the flow guide pipes 7 are the same, and have good heat conduction performance, the area between the two inner baffles 6 is a fusion cavity 8 for mixing heat exchange liquid, the area between the inner baffle 6 and the outer baffle 5 is a heat exchange cavity 13 for heat transfer, and the two groups of flow guide mechanisms are rotationally arranged in the tank body 1.

[0029] The guide-in assembly comprises a plurality of input pipes 10, a connecting pipe 11 and a plurality of pressure valve devices 12, the plurality of input pipes 10 are divided into two groups, and are all vertically and fixedly sleeved on the upper side of the tank body 1, the plurality of pressure valve devices 12 are respectively fixedly installed on the plurality of input pipes 10, the connecting pipe 11 is horizontally arranged, and is fixedly installed at the top end of the plurality of input pipes 10 and in communication with the plurality of input pipes 10 for guiding the heat exchange medium to flow in, and the pressure valve device 12 sets a back pressure valve value, and the valve can be opened only when the flow-through value is greater than the back pressure valve value, and the purpose of this setting is to make the medium in the connecting pipe 11 flow into the plurality of input pipes 10 uniformly.

[0030] The guide-out assembly comprises an elbow pipe 14 and an output pipe 15, the elbow pipe 14 is in a U shape, both ends are vertically and fixedly sleeved on the bottom side of the tank body 1, and are respectively in communication with the two heat exchange cavities 13, and the output pipe 15 is vertically and fixedly installed on the bottom side of the elbow pipe 14 and in communication with the elbow pipe 14, and the output end of the output pipe 15 and the input end of the connecting pipe 11 are respectively connected in communication with the port of the external pumping equipment.

[0031] Under the pumping action of the external medium liquid, the medium liquid is guided into through the input end of the connecting pipe 11, is uniformly distributed under the action of the plurality of pressure valve devices 12, and flows into the plurality of input pipes 10 at the same time, is subjected to heat exchange in the heat exchange cavity 13 area in the tank body 1, flows out from the elbow pipe 14, and finally flows back to the pumping equipment through the output pipe 15, is heated or cooled, and forms the medium liquid of the preset temperature, so as to realize the circulation operation and heat exchange.

[0032] A plurality of first sealing plates 16 are sealingly and rotatably arranged inside the outer partition plate 5, and a plurality of second sealing plates 17 are sealingly and rotatably arranged inside the inner partition plate 6. The two ends of each of the three flow guide pipes 7 are fixedly sleeved in the two opposite first sealing plates 16 and second sealing plates 17 respectively. A power mechanism is arranged in the middle of the inner partition plate 6 and the outer partition plate 5. A rotating mechanism is arranged inside the inner partition plate 6.

[0033] The power mechanism comprises a main shaft 18 and a turbine 19. The main shaft 18 horizontally penetrates through the middle of the inner partition plate 6 and the outer partition plate 5. The turbine 19 is fixedly sleeved at the end of the main shaft 18 close to the port of the tank body 1. The two turbines 19 are opposite in flow direction. The outer ring of the outer partition plate 5 is sealingly and rotatably connected with the inner wall of the tank body 1 through a sealing bearing 20. The outer ring of the sealing bearing 20 is fixedly connected with the inner wall of the tank body 1. The outer ring of the outer partition plate 5 is fixedly connected with the inner ring of the sealing bearing 20.

[0034] The rotating mechanism comprises a first gear ring 21 and a plurality of second gear rings 22. The first gear ring 21 is fixedly sleeved on the inner wall of the tank body 1. The inner partition plate 6 is sealingly and rotatably sleeved in the first gear ring 21. The plurality of second gear rings 22 are fixedly sleeved on the outer rings of the plurality of second sealing plates 17 and are meshingly connected with the first gear ring 21.

[0035] The ends of the plurality of flow guide pipes 7 located in the fusion cavity 8 are fixedly sleeved with gears 23. The inner partition plate 6 is fixedly installed with a plurality of third gear rings 25 through a connecting piece 24 at the inner end thereof located in the fusion cavity 8. The plurality of third gear rings 25 are concentrically arranged with the plurality of second sealing plates 17 and are meshingly connected with the corresponding three gears 23.

[0036] When the device is used for heat exchange, the output end and the input end of an external heat source or refrigeration pumping device are fixedly connected with the input end of the connecting pipe 11 and the output end of the output pipe 15 respectively to guide the flow. The flanges 2 at the two ends of the tank body 1 are connected into liquid pumping pipelines.

[0037] When heat exchange is performed, the target liquid to be heated or cooled flows into the tank body 1 from the liquid inlet 3 connected with the right flange 2, is then blocked by the right outer partition plate 5, enters the right ends of the plurality of flow guide pipes 7, and flows to the heat exchange cavity 13 region to exchange heat with the heating or refrigeration medium.

[0038] Since the flow guide pipes 7 are helical, the flow path of the target liquid in the heat exchange cavity 13 region is long, the heat exchange time is prolonged, and the target liquid in the flow guide pipes 7 and the medium liquid in the heat exchange cavity 13 fully exchange heat.

[0039] After the target liquid flows out of the guide pipe 7 on the right side, it flows into the fusion cavity 8 region between the two inner partitions 6, where it is fused and mixed, so that the target liquid is fully heat-exchanged, further making the heat exchange more sufficient, and then flows into the left side of the guide pipe 7, and is heat-exchanged again, and then flows out of the left side of the guide pipe 7, and is fused again, realizing that the target liquid sequentially experiences heat exchange-fusion-heat exchange-fusion from right to left, so as to realize sufficient heat exchange, wherein heat exchange refers to heat exchange between the target liquid and the medium liquid across the guide pipe 7, and fusion refers to mixing and heat exchange of the target liquid flowing out of different guide pipes 7.

[0040] When the target liquid flows, it impacts the turbine 19, which drives the main shaft 18 to rotate, and the main shaft 18 drives the outer partition 5 and the inner partition 6 to rotate, and the inner partition 6 and the outer partition 5 drive the multiple sets of guide pipes 7 located inside them to rotate, thereby disturbing the medium liquid in the heat exchange cavity 13 and making the medium liquid more fully contact and exchange heat with the multiple guide pipes 7.

[0041] When the inner partition 6 rotates, the second ring gear 22 rotates under the interference of the first ring gear 21, realizing the rotation of the multiple second partitions 17, so as to make the three guide pipes 7 located inside them revolve synchronously, and when revolving, the gear 23 rotates under the interference of the third ring gear 25, thereby realizing the rotation of the guide pipes 7.

[0042] Under the cooperation of the power mechanism and the rotating mechanism, the guide pipes 7 revolve with the inner partition 6 and the outer partition 5, and at the same time, they also rotate, which disturbs the medium liquid in the circumferential direction when revolving, and pushes the medium liquid in the horizontal direction when rotating in a spiral, so as to make the medium liquid flow fully and contact the guide pipes 7 more fully in a short time, thereby ensuring sufficient heat exchange.

[0043] Since the two turbines 19 have opposite guide directions, under the impact of the same kind of liquid, the two turbines 19 rotate reversely synchronously, so that the left and right groups of guide pipes 7 rotate reversely, which disturbs the target liquid in the fusion cavity 8 and further fully exchanges heat.

[0044] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A spiral tube heat exchanger, comprising a tank (1), two sets of flow guiding mechanisms and two flanges (2), wherein the tank (1) is horizontally arranged and the left and right ends are respectively a liquid inlet (3) and a liquid outlet (4), the two flanges (2) are respectively fixedly installed on the outer ends of the liquid inlet (3) and the liquid outlet (4), and an inlet component and an outlet component are respectively provided on the upper and lower sides of the tank (1); Its features are: The two sets of flow guiding mechanisms are horizontally symmetrically arranged inside the tank (1). The flow guiding mechanism includes an outer partition (5), an inner partition (6), and multiple flow guiding pipes (7). The outer partition (5) and the inner partition (6) are respectively vertically arranged in the middle and end positions of the tank (1). The multiple flow guiding pipes (7) are all spiral-shaped and are horizontally arranged between the outer partition (5) and the inner partition (6), with both ends respectively fitted inside the outer partition (5) and the inner partition (6). The multiple guide tubes (7) are divided into multiple groups of three tubes each. The three guide tubes (7) in the same group are arranged in an equilateral triangle. All guide tubes (7) are made of the same material and have the same specifications and have good thermal conductivity. The area between the two inner partitions (6) is a fusion chamber (8) for mixing heat exchange liquids, and the area between the inner partition (6) and the outer partition (5) is a heat exchange chamber (13) for heat transfer; Both sets of flow guiding mechanisms are rotatably installed inside the tank (1).

2. The spiral tube heat exchanger according to claim 1, characterized in that: The inlet assembly includes multiple inlet pipes (10), connecting pipes (11), and multiple pressure valve devices (12). The multiple inlet pipes (10) are divided into two groups and are vertically fixedly sleeved on the upper side of the tank body (1). The multiple pressure valve devices (12) are respectively fixedly installed on the multiple inlet pipes (10). The connecting pipes (11) are horizontally arranged and fixedly installed at the top of the multiple inlet pipes (10), and are connected to the multiple inlet pipes (10) for introducing heat exchange medium.

3. A spiral tube heat exchanger according to claim 2, characterized in that: The output component includes a bend (14) and an output pipe (15). The bend (14) is U-shaped, with both ends vertically fixedly sleeved on the bottom side of the tank (1) and connected to the two heat exchange chambers (13) respectively. The output pipe (15) is vertically fixedly installed on the bottom side of the bend (14) and connected to the bend (14).

4. A spiral tube heat exchanger according to claim 1, characterized in that: The outer partition (5) is sealed and rotatably installed with multiple first sealing plates (16), and the inner partition (6) is sealed and rotatably installed with multiple second sealing plates (17). The three guide pipes (7) in the same group are fixedly sleeved at both ends in two opposite first sealing plates (16) and second sealing plates (17). The inner partition (6) and the outer partition (5) are provided with a power mechanism in the middle, and the inner partition (6) is provided with a rotation mechanism.

5. A spiral tube heat exchanger according to claim 4, characterized in that: The power mechanism includes a main shaft (18) and a turbine (19). The main shaft (18) is horizontally and fixedly sleeved in the middle of the inner partition (6) and the outer partition (5). The turbine (19) is fixedly sleeved at the end of the main shaft (18) near the port of the tank (1). The two turbines (19) have opposite flow directions. The outer ring of the outer partition (5) is sealed and rotatably connected to the inner wall of the tank (1) through a sealed bearing (20). The outer ring of the sealed bearing (20) is fixedly connected to the inner wall of the tank (1), and the outer ring of the outer partition (5) is fixedly connected to the inner ring of the sealed bearing (20).

6. A spiral tube heat exchanger according to claim 4, characterized in that: The rotary mechanism includes a first gear ring (21) and multiple second gear rings (22). The first gear ring (21) is fixedly sleeved on the inner wall of the tank body (1). The inner partition (6) is sealed and rotated inside the first gear ring (21). The multiple second gear rings (22) are respectively fixedly sleeved on the outer ring of multiple second sealing plates (17) and mesh with the first gear ring (21).

7. A spiral tube heat exchanger according to claim 4, characterized in that: The ends of the multiple guide tubes (7) located in the fusion cavity (8) are all fixedly sleeved with gears (23). The inner partition (6) located inside the fusion cavity (8) has multiple third gear rings (25) fixedly installed through connectors (24). The multiple third gear rings (25) are respectively concentrically arranged with multiple second sealing plates (17) and mesh with the corresponding three gears (23).

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