WO2018171291A1

WO2018171291A1 - Tubular spiral plate heat exchanger

Info

Publication number: WO2018171291A1
Application number: PCT/CN2018/000082
Authority: WO
Inventors: 瞿斌; 崔佳宁; 韩瑞; 杜金城; 郭丰林; 章晨; 李洪捷
Original assignee: 瞿云亮
Priority date: 2017-03-22
Filing date: 2018-03-02
Publication date: 2018-09-27
Also published as: CN106959030A

Abstract

A tubular spiral plate heat exchanger, comprising an upper linkage tube (9), a lower linkage tube (3), a center tube (5), and diverting tubes (7). One end of the lower linkage tube (3) and one end of the upper linkage tube (9) are sealed, the other end of the lower linkage tube (3) and the other end of the upper linkage tube (9) are open, and the sealed ends of the upper linkage tube (9) and the lower linkage tube (3) are arranged in opposite directions. The lower end of the center tube (5) is communicated with the lower linkage tube (3), and through holes are densely formed on the part of the lower linkage tube (3) approximate to the sealed side. The upper end of the center tube (5) is communicated with the upper linkage tube (9), and through holes are densely formed on the part of the upper linkage tube (9) approximate to the sealed side. A start end of a first diverting tube (7) is inserted into a through hole of the lower linkage tube (3) approximate to the center pipe (5), then the diverting tube (7) is spirally wound along the periphery of the center tube (5) and ascends to the upper linkage tube (9), and the tail end of the diverting tube (7) is inserted into a through hole of the upper linkage tube (9) approximate to the center tube; a second diverting tube (7) is spirally wound along the periphery of the first diverting tube (7) and ascends, and is connected with corresponding through holes of the upper linkage tube (9) and the lower linkage tube (3) in the same way; and the remaining diverting tubes (7) are wound in sequence. The diverting tubes (7) are connected by means of grooves (23) and protrusions (22) on the corresponding sides in an embedded manner.

Description

Tubular spiral plate heat exchanger

Technical field

The invention relates to a tubular spiral plate heat exchanger, belonging to the technical field of heat exchange equipment.

Background technique

At present, there are many kinds of heat exchangers involved in the market, such as heat exchangers for solar water heaters; steel mills need to use waste heat, heat generated during cement plant roasting, large boilers, tea stove flue The heat generated, etc., must be removed by heat exchangers for heating, showers, etc. At present, there are mainly the following types of heat exchangers sold in the market: tube type: floating head type, fixed tube type, outer tube type, heat pipe type, sliding tube type, and the like. The plate type is: plate-fin type, plate-shell type, laminated plate type and the like. The above heat exchanger is difficult to manufacture and high in cost. The key is that the heat transfer efficiency is very low. Patent application No. 201110322698.5, although the cooling system of the large-tonnage crane can further improve the cooling effect, the heat exchange efficiency is still low due to the complicated structure, and it cannot be adapted to other occasions, and the use is limited.

Summary of the invention

It is an object of the present invention to provide a tubular spiral plate heat exchanger which is simple in construction, easy to manufacture, and particularly heat exchange efficiency.

To this end, a tubular spiral plate heat exchanger according to the present invention mainly comprises an upper pipe, a lower pipe, a center pipe and a draft pipe; wherein, one end of the lower pipe and the upper pipe are sealed, and the other end is open. And the upper joint pipe and the lower joint pipe sealing end are opposite in direction. The lower end of the central pipe is in communication with the lower pipe, and a plurality of through holes or a rectangular groove are formed in a dense manner on the side of the lower pipe close to the seal. The upper end of the central pipe is in communication with the upper pipe, and a plurality of through holes or a rectangular groove are formed in a dense manner on the side of the upper pipe close to the seal. The starting end of the first draft tube is inserted into a through hole of the lower tube near the center tube and sealed with the outside, and then the spiral tube is spirally wound up to the upper tube along the outer circumference of the center tube at a certain pitch. Inserting the end of the draft tube into the through hole of the upper tube near the center tube and sealing it to the outside; the second tube is wound up along the outer circumference of the first tube, third The root guiding tube is wound up along the outer circumference of the second guiding tube, and is wound in the same manner in sequence, and connected to the corresponding through holes of the upper connecting tube and the lower connecting tube, and then the other guiding tubes are sequentially wound to the required Spiral plate diameter. Each of the draft tubes is provided with a groove and a boss at corresponding positions, and each of the draft tubes is inlaid with each other through a groove and a boss of the corresponding side to form a tubular spiral plate. Based on this core component, additional components are added to create heat exchangers for a variety of different applications.

Wherein, the position where the lower end of the central pipe communicates with the lower connecting pipe may be one end of the middle pipe of the lower pipe or the lower pipe.

Wherein, the position where the upper end of the central pipe communicates with the upper connecting pipe may be the middle of the upper connecting pipe or one end of the upper connecting pipe.

The shape of the through hole of the lower tube and the upper tube includes, but is not limited to, a circular shape and a square shape.

Wherein, the draft tubes can be connected by welding or glue.

Wherein, the tubular spiral plate heat exchanger is placed in a heat preservation water tank, and the open end of the lower joint pipe extends out of the bottom of the heat preservation water tank; the open end of the upper joint pipe extends out of the upper portion of the heat preservation water tank; The water pipe is filled with water until the water outlet pipe is stopped; the open end of the lower pipe is connected with the hot water source water outlet, and the open end of the upper pipe is connected with the hot water source water inlet to form a closed circuit cycle.

The tubular spiral plate heat exchanger further includes a draft tube disposed on the outer circumference of the tubular spiral plate, and the open end of the lower tube extends from the lower portion of the draft tube; the opening of the upper tube The end extends beyond the upper portion of the draft tube.

Wherein, the tubular spiral plate heat exchanger with a draft tube is placed in the center of a heat preservation water tank, the lower part of the draft tube passes through the bottom plate of the heat preservation water tank, and the upper part passes through the water tank cover; The inlet pipe is filled with water to the outlet pipe; the air inlet at the lower end of the draft tube communicates with the hot gas outlet of a hot air source through a flange, and the air outlet at the upper end of the draft tube communicates with the intake end of the hot air source. To form a closed loop of hot air.

Wherein, the tubular spiral plate heat exchanger with a guide tube has an insulation layer around the outer circumference of the guide tube, and the guide tube is connected in series with a chimney such as a boiler or a tea stove.

Wherein the tubular spiral plate heat exchanger with a draft tube is placed in a cavity of a boiler or a tea furnace, the open end of the lower pipe extends out of the bottom of the draft tube, and the water at the bottom of the boiler or the tea stove water tank The open end of the upper pipe extends out of the upper part of the draft tube and communicates with the water in the upper part of the boiler or the tea stove water tank; a heat source is arranged in the lower part of the air inlet of the draft tube, and the air outlet of the upper part of the draft tube is connected with the boiler or the stove The chimneys are connected.

Wherein, the upper end of the central tube of the tubular spiral plate heat exchanger is not connected to the upper connecting pipe, but is connected to an inclined air inlet, and the upper connecting pipe further has an air outlet.

Wherein, the air inlet and the air outlet can be further inserted into a plastic tube and tightened by a collar.

Wherein, the draft tube includes, but is not limited to, a square tube, a porous flat tube, and a round tube.

Wherein, the draft tube includes, but is not limited to, a square tube, a porous flat tube, a round tube, and a straight wing is disposed perpendicularly to the middle of the two sides thereof, and the length of the one-sided straight fin is a pitch of the tubular spiral plate. /4 to 1/2.

Wherein, the tubular spiral plate may be wound by a draft tube without straight fins, or all of them may be wound with a straight-winged draft tube, or with a straight-winged and straight-winged draft tube.

Compared with the prior art, the tubular spiral plate heat exchanger has the advantages and advantages of simple structure, compactness, novelity, easy manufacture, low cost, high heat conversion efficiency, wide application and combination. Heat exchangers for a variety of different applications.

DRAWINGS

Figure 1 is a schematic structural view of a heat exchanger for a solar tile, which is closed by air;

Figure 2 is a plan view of the direction A of Figure 1;

Figure 3 is a schematic structural view of a heat exchanger for a solar tile, closed loop with water;

Figure 4 is a schematic diagram of a heat exchanger for use in flue waste heat recovery such as boilers;

Figure 5 is a schematic structural diagram of a heat exchanger for a boiler and a tea stove;

Figure 6 is a schematic structural diagram of a heat exchanger for taking heat or cold sources by circulating air or water;

Figure 7 is a square tubular cross-sectional view of the draft tube;

Figure 8 is a cross-sectional view of the guide tube in a porous flat tube;

Figure 9 is a cross-sectional view of the draft tube;

Figure 10, the draft tube is a square tubular cross-sectional view, and the two sides are perpendicularly outwardly provided with straight wings, the other principle structure is the same as Figure 7;

Figure 11 is a porous flat tube cross-sectional view of the guide tube, and the two sides are perpendicularly outwardly provided with straight wings, the other principle structure is the same as Figure 8;

Figure 12 is a cross-sectional view of the draft tube, with straight wings on both sides perpendicular to each other. The other principle structure is the same as Figure 9.

The label names in the figure are as follows:

1-Air inlet 2-duct tube 3-down tube 4-insulation tank

5-center tube 6-spiral channel 7-flow tube 8-water

9-Upper pipe 10-Outlet pipe 11-Water tank cover 12-Air outlet

13-inlet pipe 14-insulation layer 15-chimney 16-heat source

17- collar 18-plastic tube 19-air inlet 20-outlet

21-half slot 22-protrusion 23-groove 24-straight wing

detailed description

The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

The tubular spiral plate heat exchanger of the invention mainly comprises an upper connecting pipe 9, a lower connecting pipe 3, a central pipe 5 and a guiding pipe 7; wherein one end of the lower connecting pipe 3 and the upper connecting pipe 9 is sealed, and the other end is open And the upper joint pipe 9 and the lower joint pipe 3 have opposite sealing ends. The lower end of the center tube 5 communicates with the lower connecting tube 3, and a plurality of through holes are densely formed on the side of the lower connecting tube 3 close to the seal. The upper end of the center tube 5 communicates with the upper connecting tube 9, and a plurality of through holes are densely formed on the side of the upper connecting tube 9 near the seal. The first end of the first draft tube 7 is inserted into a through hole of the lower tube 3 near the center tube, and then sealed with the outside, and then the guide tube 7 is spiraled to a certain pitch along the outer circumference of the center tube 5. Winding up to the upper connecting pipe 9, and inserting the end of the guiding pipe 7 into the through hole of the upper connecting pipe 9 near the center pipe to be sealed with the outside; the second guiding pipe is along the first guiding pipe The outer circumference is spirally wound up, and the third draft tube 7 is spirally wound up along the outer circumference of the second draft tube 7, and is sequentially wound in the same manner and connected to the through holes corresponding to the upper and lower tubes. Then, the other draft tubes 7 are sequentially wound to the required spiral plate diameter. Each of the draft tubes 7 is provided with a groove 23 and a boss 22 at corresponding positions, and the respective draft tubes are inlaid with each other through the grooves and the bosses on the corresponding sides thereof to form a tubular spiral plate.

In Fig. 1 and Fig. 2, a guide tube 2 is added to the outer circumference of the tubular spiral plate, and the left end of the lower connecting tube 3 extends from the lower left side of the draft tube 2. The right end of the upper tube 9 projects from the upper right side of the draft tube 2. After the tubular spiral plate is combined with the guide tube 2, the center position of the heat insulating water tank 4 is placed. The lower portion of the draft tube 2 passes through the bottom plate of the insulated water tank 4 and is welded and sealed, and the upper portion passes through the water tank cover 11. The insulated water tank 4 is filled with water 8 through the inlet pipe 13 to the outlet pipe 10. The air inlet 1 at the lower end of the draft tube 2 communicates with the hot gas outlet of the solar panel through a flange, and the air outlet 12 at the upper end of the draft tube 2 communicates with the inlet end of the solar panel to form a closed loop of hot air. When hot air continuously enters the draft tube 2 and passes through the spiral passage 6, each of the draft tubes 7 is heated and transfers heat to the water 8 in the bore of the draft tube 7. After the water 8 in the draft tube is heated, the lower temperature water 8 continuously flows in from the left end of the lower header 3, passes through the inner tubes of the respective flow tubes 7 and the center tube 5, and then flows out from the right end of the upper tube 9. Continue to circulate heating until the water 8 in the incubator is heated to the desired temperature.

In Fig. 3, the tubular spiral plate is placed in the insulated water tank 4, and the left end of the lower connecting pipe 3 is extended to the left side of the bottom of the heat insulating water tank 4 and sealed. The upper pipe 9 extends beyond the upper right side of the insulated water tank 4 and is sealed. The insulated water tank 4 is filled with water 8 through the inlet pipe 13 until the outlet pipe 10 is stopped. The left end of the lower header 3 communicates with the water outlet of the solar tile, and the upper tube 9 communicates with the water inlet of the solar tile. After the solar tile is heated, the water in the inner cavity is heated. The heated water flows in from the lower header 3, passes through the inner holes of the respective flow tubes 7 and the center tube 5, and then flows out from the upper tube 9 to form a closed circuit. Thereby, the water 8 of the insulated water tank 4 is continuously heated to a desired temperature.

In Fig. 4, the tubular spiral plate is placed in the draft tube 2, the left end of the lower connecting pipe 3 is extended from the lower left side of the draft tube 2, and is connected to the outlet pipe 10 of the separately provided insulated water tank 4. . The upper header 9 extends beyond the upper right side of the draft tube 2 and communicates with the inlet pipe 13 of the insulated water tank 4. The outer circumference of the draft tube 2 is provided with an insulation layer 14, and the guide tube 2 is connected in series with a chimney such as a boiler or a tea stove. When the hot flue gas flows from the lower air inlet 1 of the draft tube 2 into the spiral passage 6, and then flows out from the air outlet 12 at the upper end thereof, the tubular spiral plate is heated, and the heat is transferred to the respective draft tubes 7, The water 8 in the inner cavity of the lower pipe 3, the center pipe 5, and the upper pipe 9 continuously heats the water 8 of the heat insulating water tank 4 to a desired temperature to achieve the purpose of waste heat recovery.

In Fig. 5, the tubular spiral plate is placed in the middle of the draft tube 2 of the inner chamber of the boiler or the tea furnace, and the lower connecting tube 3 extends from the left side of the bottom of the draft tube and is connected to the water 8 at the bottom of the boiler water tank. . The upper pipe 9 extends to the right side of the draft tube 2 at the upper portion of the boiler and is sealed, and communicates with the water 8 at the upper portion of the boiler water tank. A heat source 16 is disposed at a lower portion of the air inlet 1 of the draft tube 2 of the boiler or the tea stove water tank. The bottom and the outer circumference and the upper portion of the boiler or the tea stove are provided with a heat insulating layer 14, and the upper air outlet 12 and the chimney 15 of the draft tube 2 are provided. Connected. The boiler or tea stove water tank passes through the water inlet pipe 13 at the bottom thereof, and the water 8 is discharged to the upper water outlet 10 . When the heat source is turned on, hot air flows from the air inlet 1 through the spiral passage 6 of the tubular spiral plate to the air outlet 12 and then from the chimney 15. The tubular spiral plate transfers heat to the water 8 in each of the draft tube 7 and the inner tube 5 after being heated. The water 8 in the incubator of the boiler or the tea stove continuously flows in from the lower connecting pipe 3, and then flows out from the upper connecting pipe 9 through the inner holes of the respective guiding pipes 7 and the central pipe 5, and is continuously circulated and heated until the required water temperature is reached. stop.

In Fig. 6, the upper end of the central tube of the tubular spiral plate heat exchanger is not in communication with the upper connecting pipe, but is connected to an inclined air inlet 19, which further has an air outlet 20. The specific structure is at the upper end of the central tube 5 of the tubular spiral plate. After the air inlet 19 is inclined at an angle to the right side, it is fitted into the plastic tube 18 and tightened by the collar 17 . The air outlet 20 of the upper header 9 is also fitted into the plastic tube 18 and is looped by the collar 17. Then, the tubular spiral plate is buried in the groundwater source layer or the river water, and the air inlet 19 is communicated with the air outlet pipe of the compressor through the plastic pipe 18. The air outlet 20 is also connected to the interior of the house through the plastic pipe 18, or is connected to the planting greenhouse and the breeding room. If the compressor is turned on, the indoor air can be warmed up by taking in the underground heat in the winter tubular spiral plate. In the summer, the tubular spiral plate absorbs the cold amount in the ground or in the water, which can cool the indoor air and play the effect of cooling in winter and cool in summer to replace the cold and hot air conditioner. This principle can be used as a transfer medium in addition to air as a transfer medium.

In Fig. 7, the draft tube 7 is a square tube. A boss 22 is provided on both sides of the upper side thereof along the two walls, and is recessed inwardly along the two walls thereof to form a half groove 21.

In Fig. 8, the draft tube 7 is a porous flat tube. A boss 22 is provided on the upper portion of the intermediate wall, and a recess 23 is provided in the lower portion.

In Fig. 9, the draft tube 7 is a round tube. A boss 22 is provided on the outer circumference along the center line, and a groove 23 is provided on the lower outer circle.

In Fig. 10, the draft tube 7 is a square tube, and straight fins 24 are vertically disposed at intermediate positions on both sides thereof, and other structural principles are the same as those in Fig. 7.

In Fig. 11, the draft tube 7 is a porous flat tube, and straight fins 24 are vertically disposed at intermediate positions on both sides thereof, and other structural principles are the same as those in Fig. 8.

In Fig. 12, the draft tube 7 is a circular tube, and straight fins 24 are vertically disposed at the intermediate positions on both sides thereof, and other structural principles are the same as those in Fig. 9.

In Figs. 10, 11, and 12, the length of the one-side straight fin 24 of the draft tube 7 is 1/4 to 1/2 of the pitch of the tubular spiral plate.

The tubular spiral plates may all be wound with a draft tube without straight fins, or all of them may be wound with a straight-winged draft tube, or with a straight-winged and straight-winged draft tube.

Claims

A tubular spiral plate heat exchanger characterized in that: the heat exchanger mainly comprises an upper pipe, a lower pipe, a center pipe and a draft pipe; wherein one end of the lower pipe and the upper pipe are sealed, and the other end is open, The upper end of the upper tube is opposite to the sealing end of the lower tube; the lower end of the central tube is in communication with the lower connecting tube, and a plurality of through holes or a rectangular groove are densely arranged on the side of the lower connecting tube near the sealing; the upper end of the central tube is connected to the upper connecting tube a plurality of through holes or a rectangular groove are densely arranged on a side of the upper connecting pipe close to the sealing; the starting end of the first guiding pipe is inserted into a through hole of the lower connecting pipe near the central pipe, and is sealed from the outside, Then, the flow guiding tube is spirally wound up to the upper connecting pipe along the outer circumference of the central pipe by a certain pitch, and the end of the guiding pipe is inserted into the through hole of the upper connecting pipe near the central pipe to be sealed with the outside; The second guiding tube is wound up along the outer circumference of the first guiding tube, and is sequentially wound in the same manner, and communicates with the through holes corresponding to the upper connecting tube and the lower connecting tube, and then the other guiding tubes are sequentially wound. To the required spiral plate diameter; each Respective positions on the flow tube provided with recesses and projections, between the draft tube through the groove of the corresponding side and the boss are connected to form a tube insert plates are spiral.
The tubular spiral plate heat exchanger according to claim 1, wherein the lower end of the central pipe communicates with the lower pipe at a position of a middle portion of the lower pipe or a lower pipe.
The tubular spiral plate heat exchanger according to claim 1, wherein the upper end of the central pipe communicates with the upper pipe at a position of a middle portion of the upper pipe or an upper pipe.
The tubular spiral plate heat exchanger according to claim 1, wherein the shape of the through hole of the lower connecting pipe and the upper connecting pipe includes but is not limited to a circular shape and a square shape, and the guiding pipe comprises However, it is not limited to square tubes, porous flat tubes, and round tubes.
A tubular spiral plate heat exchanger according to claim 1, wherein said draft tubes are connected by welding or gluing.
The tubular spiral plate heat exchanger according to claim 1, wherein the guide tube has a straight wing perpendicularly disposed at an intermediate position between the two sides thereof, and the length of the one-sided straight wing is a tubular spiral. The pitch of the plate is 1/4 to 1/2.
A tubular spiral plate heat exchanger according to claim 1, wherein the tubular spiral plate can be completely wound by a draft tube without straight fins, or all of the draft tubes with straight wings can be used. Winding, or straight-winged draft tubes with no straight wings, are wound around each other.
A tubular spiral plate heat exchanger according to claim 1, wherein said tubular spiral plate heat exchanger is placed in a heat insulating water tank, and an open end of the lower connecting pipe extends beyond the bottom of the heat insulating water tank. The open end of the upper pipe protrudes from the upper part of the heat preservation water tank; the heat preservation water tank is filled with water through its inlet pipe until the water outlet pipe is stopped; the open end of the lower pipe is connected with the hot water source water outlet, and the open end of the upper pipe is connected with heat The water inlets are connected to form a closed loop.
A tubular spiral plate heat exchanger according to claim 1, wherein said tubular spiral plate heat exchanger further comprises a draft tube disposed on an outer circumference of the tubular spiral plate. The open end of the lower tube extends beyond the lower portion of the draft tube; the open end of the upper tube extends beyond the upper portion of the draft tube.
A tubular spiral plate heat exchanger according to claim 9, wherein said tubular spiral plate heat exchanger with a draft tube is placed in a center position of a heat insulating water tank, and the flow guiding tube The lower part passes through the bottom plate of the insulated water tank, and the upper part passes through the water tank cover; the heat preservation water tank is filled with water through its inlet pipe to its outlet pipe; the air inlet at the lower end of the draft tube is connected to the hot gas outlet of a hot air source through the flange. The air outlet at the upper end of the draft tube communicates with the intake end of the hot air source to form a closed loop of hot air.
A tubular spiral plate heat exchanger according to claim 9, wherein the tubular spiral plate heat exchanger with a draft tube has an outer layer of a heat insulating layer around the outer circumference of the draft tube. The draft tube is connected in series with a chimney such as a boiler or a tea stove.
A tubular spiral plate heat exchanger according to claim 9, wherein said tubular spiral plate heat exchanger with a draft tube is placed in a cavity of a boiler or a tea furnace, and the lower portion is connected The open end of the tube protrudes from the bottom of the draft tube and communicates with the water at the bottom of the boiler or the tea stove water tank; the open end of the upper pipe extends out of the upper part of the draft tube and communicates with the water in the upper part of the boiler or the tea stove water tank; The lower part of the air inlet is provided with a heat source, and the upper air outlet of the draft tube is connected to the chimney of the boiler or the tea stove.
A tubular spiral plate heat exchanger according to claim 1, wherein the upper end of the central tube of the tubular spiral plate heat exchanger is not connected to the upper connecting pipe, but is connected to an inclined air inlet. Connected, the upper tube further has an air outlet.