CN110645814A

CN110645814A - Fluoroplastic shell-and-tube heat exchanger based on novel structure

Info

Publication number: CN110645814A
Application number: CN201911009038.4A
Authority: CN
Inventors: 徐祖建; 邓文军; 苏平
Original assignee: Hubei Junxiang Information Technology Co Ltd
Current assignee: Hubei Junxiang Information Technology Co Ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-01-03

Abstract

The invention provides a fluoroplastic shell-and-tube heat exchanger based on a novel structure, which comprises a shell, a second tube plate and a buffer plate, wherein the shell is provided with a first tube plate and a second tube plate; the upper part of the outer peripheral surface of the left side of the shell is provided with a cold liquid inlet, and the upper part of the outer peripheral surface of the right side of the shell is provided with a cold liquid outlet; the left end and the right end of the lower side of the peripheral surface of the shell are respectively welded with one support frame, and the lower end surfaces of the two support frames are respectively welded with one support frame base; the lower side of the outer peripheral surface of the shell is provided with three rectangular openings, and the three rectangular openings arranged on the lower side of the outer peripheral surface of the shell are connected with one dirt settling box through bolts; the bottom end face of each dirt settling box is fixedly connected with one of the drain pipes, and the three drain pipes are provided with one of the valves. The arrangement of the baffle plate in the pipe is beneficial to changing the flow direction of liquid in the pipe through the baffle plate in the pipe, increasing the pipe pass of the liquid in the pipe, improving the heat transfer effect of the pipe and enabling the pipe to have better strength.

Description

Fluoroplastic shell-and-tube heat exchanger based on novel structure

Technical Field

The invention belongs to the technical field of shell-and-tube heat exchangers, and particularly relates to a fluoroplastic shell-and-tube heat exchanger based on a novel structure.

Background

The shell-and-tube polytetrafluoroethylene heat exchanger is heat exchange equipment which is made of polytetrafluoroethylene tubes serving as heat exchange materials and polytetrafluoroethylene plastics or steel shells. The polytetrafluoroethylene shell-and-tube heat exchanger is called fluoroplastic shell-and-tube heat exchanger for short. The shell-and-tube heat exchanger is also called a shell-and-tube heat exchanger. The dividing wall type heat exchanger takes the wall surface of the tube bundle sealed in the shell as a heat transfer surface. The shell-and-tube heat exchanger is composed of a shell, a heat transfer tube bundle, a tube plate, a baffle plate (baffle plate), a tube box and the like. The shell is mostly cylindrical, a tube bundle is arranged in the shell, and two ends of the tube bundle are fixed on the tube plate. One of the cold fluid and the hot fluid which carry out heat exchange flows in the tube and is called tube pass fluid; the other flows outside the tubes and is called shell-side fluid.

As in application No.: the invention discloses a bioengineering spiral coil heat exchanger based on the Internet of things, which structurally comprises a spiral coil heat exchanger, a water inlet pipe, an air inlet pipe, a seal head, a flow tube, an equipment flange, a water outlet pipe, a pipe body drain pipe, an exhaust pipe, a support, nuts, bolts and an intelligent temperature controller, wherein the spiral coil heat exchanger is arranged on the support; in order to realize that bioengineering spiral coil heat exchanger based on thing networking can conveniently wash, reduce heat loss, high-efficient heating, be equipped with spiral heat transfer device in the spiral coil heat exchanger, spiral heat transfer device can conveniently wash through the spiral shape, and spiral heat transfer device utilizes spiral heat exchange tube and spiral scavenge pipe to connect side by side and reduces the heat loss, and spiral coil heat exchanger improves work efficiency through the operation of intelligent temperature controller control heater.

Based on the search of the above patent, and in conjunction with the discovery of prior art equipment, a shell and tube heat exchanger is comprised of components such as a shell, tubes, tube sheets, and baffles (baffles). The heat transfer effect of the tube is important to the heat exchange effect of the whole shell-and-tube heat exchanger, the tube in the existing shell-and-tube heat exchanger has poor heat exchange effect, and dirt in the shell is difficult to clean. The liquid inlet on the shell can directly impact and damage the pipe due to inertia after entering the shell because the liquid has impact force, so that the damage to the pipe can influence the service life of the pipe for a long time.

Disclosure of Invention

In order to solve the technical problems, the invention provides a fluoroplastic shell-and-tube heat exchanger based on a novel structure, which aims to solve the problems that the heat exchange effect of tubes in the existing shell-and-tube heat exchanger is poor, and dirt in the shell is difficult to clean. The liquid inlet on the shell can directly impact and damage the pipe due to inertia after the liquid enters the shell, so that the damage to the pipe can affect the service life of the pipe for a long time.

The invention is achieved by the following specific technical means:

a fluoroplastic shell-and-tube heat exchanger based on a novel structure is used for improving the heat transfer effect and more conveniently cleaning dirt and comprises a shell, a cold liquid inlet, a cold liquid outlet, a first seal head, a second seal head, a support frame base, a hot liquid inlet, a hot liquid outlet, a tube, a rubber pad, a rectangular opening, a dirt settling box, a drain pipe, a valve, an in-tube baffle plate, an out-tube baffle plate, a first tube plate, a second tube plate and a buffer plate; the upper part of the outer peripheral surface of the left side of the shell is provided with a cold liquid inlet, and the upper part of the outer peripheral surface of the right side of the shell is provided with a cold liquid outlet; the left end face of the shell is connected with a first seal head and a first tube plate through bolts, and the first tube plate is positioned between the left end face of the shell and the right end face of the first seal head; the right end face of the shell is connected with a second seal head through a bolt, and the right end face of the second seal head is provided with a hot liquid inlet; the left end face of the first seal head is provided with a hot liquid outlet; the left end surface of the tube is fixedly connected with the middle part of the first tube plate, and the right end surface of the tube is fixedly connected with the middle part of the second tube plate; the inner cavity surface on the right side of the shell is adhered with a rubber pad through an adhesive, and the left end surface of the rubber pad is tightly adhered with the lower end surface of the second tube plate; the inner cavity surface on the right side of the shell is provided with a round hole, and the diameter of the round hole on the inner cavity surface on the right side of the shell is equal to that of the round hole on the rubber pad; the inner circumferential surface of the pipe is provided with a plurality of internal baffle plates, and the outer circumferential surface of the pipe is fixedly connected with five external baffle plates; the upper part of the right end face of the first tube plate is fixedly connected with a buffer plate, and the right end face of the buffer plate is fixedly connected with the upper part of the left end face of one outer tube baffle plate; the left end and the right end of the lower side of the peripheral surface of the shell are respectively welded with one support frame, and the lower end surfaces of the two support frames are respectively welded with one support frame base; the lower side of the outer peripheral surface of the shell is provided with three rectangular openings, and the three rectangular openings arranged on the lower side of the outer peripheral surface of the shell are connected with one dirt settling box through bolts; the bottom end face of each dirt settling box is fixedly connected with one of the drain pipes, and the three drain pipes are provided with one of the valves.

Furthermore, the number of the tubes is several, and the several tubes are distributed between the first tube plate and the second tube plate in an annular array.

Furthermore, the shape of each of the plurality of baffle plates in the pipe is an arch baffle plate, and the plurality of baffle plates in the pipe are distributed in the pipe at equal intervals.

Furthermore, the thickness of the buffer plate is one centimeter to two centimeters, and the shape of the buffer plate is arc-shaped.

Furthermore, the depth of each of the three dirt settling boxes is ten centimeters to fifteen centimeters, and the thickness of each of the three dirt settling boxes is one centimeter.

Compared with the prior art, the invention has the following beneficial effects:

the arrangement of the baffle plate in the pipe is beneficial to changing the flow direction of liquid in the pipe through the baffle plate in the pipe, increasing the pipe pass of the liquid in the pipe, improving the heat transfer effect of the pipe and enabling the pipe to have better strength.

The setting of box and blow off pipe are precipitated to the dirt, through the rectangle mouth of seting up casing outer peripheral face downside, makes the direct sediment of dirt in the dirt deposits the box, through opening the valve on the blow off pipe, makes the interior sewage discharge of shell, through the instrument, deposits the box with the dirt and dismantles, makes the dirt deposit the clearance of being more convenient for of the sediment dirt in the box, has improved shell and tube heat exchanger's clean efficiency, reduces because of depositing the harmful effects that the dirt caused for shell and tube heat exchanger.

The setting of buffer board, through the high impulsive force liquid that the buffer board help buffering casing inlet got into, make the pipe avoid with the direct contact of high impulsive force liquid, reduced the impact force that the pipe received, improved the life of pipe.

Drawings

Fig. 1 is a schematic axial view of the present invention.

Fig. 2 is a left side view of the present invention.

Fig. 3 is a schematic cross-sectional view a of fig. 2 according to the present invention.

Fig. 4 is a schematic view of the present invention at a part B in fig. 1.

Fig. 5 is a partial enlarged structural view of the present invention at C in fig. 3.

Fig. 6 is a schematic view of the present invention with the housing and the holder removed.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a housing; 2. a cold liquid inlet; 3. a cold liquid outlet; 4. a first end enclosure; 5. a second end enclosure; 6. a support frame; 7. a support frame base; 8. a hot liquid inlet; 9. a hot liquid outlet; 10. a tube; 11. a rubber pad; 12. a rectangular opening; 13. a dirt deposition cartridge; 14. a blow-off pipe; 15. a valve; 16. a baffle plate in the pipe; 17. an external baffle plate; 18. a first tube sheet; 19. a second tube sheet; 20. a buffer plate.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 6:

the invention provides a fluoroplastic shell-and-tube heat exchanger based on a novel structure, which is used for improving the heat transfer effect and more conveniently cleaning dirt and comprises a shell 1, a cold liquid inlet 2, a cold liquid outlet 3, a first seal head 4, a second seal head 5, a support frame 6, a support frame base 7, a hot liquid inlet 8, a hot liquid outlet 9, a tube 10, a rubber pad 11, a rectangular opening 12, a dirt settling box 13, a drain pipe 14, a valve 15, an in-tube baffle plate 16, an out-tube baffle plate 17, a first tube plate 18, a second tube plate 19 and a buffer plate 20; the upper part of the outer peripheral surface of the left side of the shell 1 is provided with a cold liquid inlet 2, and the upper part of the outer peripheral surface of the right side of the shell 1 is provided with a cold liquid outlet 3; the left end face of the shell 1 is connected with a first seal head 4 and a first tube plate 18 through bolts, and the first tube plate 18 is positioned between the left end face of the shell 1 and the right end face of the first seal head 4; the right end face of the shell 1 is connected with a second seal head 5 through a bolt, and the right end face of the second seal head 5 is provided with a hot liquid inlet 8; the left end face of the first seal head 4 is provided with a hot liquid outlet 9; the left end surface of the tube 10 is fixedly connected with the middle part of the first tube plate 18, and the right end surface of the tube 10 is fixedly connected with the middle part of the second tube plate 19; the right inner cavity surface of the shell 1 is adhered with a rubber pad 11 through an adhesive, and the left end surface of the rubber pad 11 is tightly adhered with the lower end surface of the second tube plate 19; a circular hole is formed in the inner cavity surface on the right side of the shell 1, and the diameter of the circular hole formed in the inner cavity surface on the right side of the shell 1 is equal to that of the circular hole in the rubber pad 11; the inner circumferential surface of the tube 10 is provided with a plurality of the internal baffle plates 16, and the outer circumferential surface of the tube 10 is fixedly connected with five external baffle plates 17; the upper part of the right end face of the first tube plate 18 is fixedly connected with a buffer plate 20, and the right end face of the buffer plate 20 is fixedly connected with the upper part of the left end face of one of the external tube baffle plates 17; the left end and the right end of the lower side of the peripheral surface of the shell 1 are respectively welded with one support frame 6, and the lower end surfaces of the two support frames 6 are respectively welded with one support frame base 7; the lower side of the outer peripheral surface of the shell 1 is provided with three rectangular openings 12, and the three rectangular openings 12 arranged on the lower side of the outer peripheral surface of the shell 1 are all connected with one dirt settling box 13 through bolts; the bottom end face of each of the three dirt settling boxes 13 is fixedly connected with one of the sewage discharge pipes 14, and the three sewage discharge pipes 14 are provided with one of the valves 15.

The number of the tubes 10 is several, and the several tubes 10 are distributed between the first tube plate 18 and the second tube plate 19 in an annular array, so that the heat exchange of the tubes 10 is more uniform, the heat exchange effect of the tubes is improved, and the tubes have better elasticity. The cold liquid passes through the buffer plate 20 and contacts the outer circumferential surface of the pipe 10, and when the cold liquid contacts the fluoroplastic pipe 10 having a good elasticity, the outer circumferential surface of the pipe 10 is less likely to be contaminated.

The shape of each of the plurality of baffles 16 in the tube is an arched baffle, and the plurality of baffles 16 in the tube are distributed in the tube 10 at equal intervals, so that the flow direction of liquid in the tube is changed through the baffles 16 in the tube 10, the tube pass of the liquid in the tube is increased, the heat transfer effect of the tube 10 is improved, and the tube 10 has better strength.

The thickness of the buffer plate 20 is one centimeter to two centimeters, the shape of the buffer plate 20 is arc-shaped, the impact force applied to the cold liquid is buffered through the buffer plate 20, and the cold liquid is contacted with the peripheral surface of the pipe 10 after passing through the buffer plate 20; the tube 10 is prevented from directly contacting the high-impact liquid, the impact force of the tube 10 is reduced, and the service life of the tube 10 is prolonged.

Wherein, it is three its degree of depth of box 13 is ten centimetres to fifteen centimetres, and three its thickness of box 13 is a centimetre to the dirt is precipitated to the dirt, makes the direct sediment of dirt deposit in box 13 is precipitated to the dirt, through opening 14 valve 15 on the blow off pipe, makes the interior sewage of shell 1 discharge, through the instrument, deposits box 13 with the dirt and dismantles, makes the dirt deposit the dirt in the box 13 and more be convenient for clear up, has improved shell and tube heat exchanger's cleaning efficiency, reduces because of depositing the bad influence that the dirt caused for shell and tube heat exchanger.

The specific use mode and function of the embodiment are as follows:

when the device is used, cold liquid enters the shell 1 through the cold liquid inlet 2, the impact force on the cold liquid is buffered through the buffer plate 20, and the cold liquid contacts the outer peripheral surface of the pipe 10 after passing through the buffer plate 20; the shell pass of the cold liquid is increased through the external baffle plate 17, and the cold liquid passes through the cold liquid outlet 3 and is discharged from the shell 1; hot liquid enters the second seal head 5 through the hot liquid inlet 8, passes through the inner cavity surface on the right side of the shell 1 and the round hole on the rubber pad 11, passes through the second tube plate 19, then enters the tube 10, changes the flow direction of the liquid in the tube through the baffle plate 16 in the tube 10, increases the tube pass of the liquid in the tube, and improves the heat transfer effect of the tube 10; passing the hot liquid through the tubes 10 through the first tube sheet 18 and then into the first head 4, through the hot liquid outlet 9, to exit the hot liquid into the shell 1;

when the dirt is cleaned, the sewage is discharged from the sewage discharge pipe 14 through the valve 15 on the sewage discharge pipe 14, the dirt settling box 13 is detached from the rectangular opening 12 through a tool, and the dirt settling box 13 is cleaned through the tool.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a fluoroplastics shell and tube heat exchanger based on novel structure for improve heat transfer effect, and more conveniently clear up the dirt, its characterized in that: the fluoroplastic shell-and-tube heat exchanger based on the novel structure comprises a shell (1), a cold liquid inlet (2), a cold liquid outlet (3), a first seal head (4), a second seal head (5), a support frame (6), a support frame base (7), a hot liquid inlet (8), a hot liquid outlet (9), a tube (10), a rubber pad (11), a rectangular opening (12), a dirt settling box (13), a blow-off pipe (14), a valve (15), an in-tube baffle plate (16), an out-of-tube baffle plate (17), a first tube plate (18), a second tube plate (19) and a buffer plate (20); the upper part of the outer peripheral surface of the left side of the shell (1) is provided with a cold liquid inlet (2), and the upper part of the outer peripheral surface of the right side of the shell (1) is provided with a cold liquid outlet (3); the left end face of the shell (1) is connected with a first seal head (4) and a first tube plate (18) through bolts, and the first tube plate (18) is located between the left end face of the shell (1) and the right end face of the first seal head (4); the right end face of the shell (1) is connected with a second seal head (5) through a bolt, and a hot liquid inlet (8) is formed in the right end face of the second seal head (5); a hot liquid outlet (9) is formed in the left end face of the first seal head (4); the left end face of the tube (10) is fixedly connected with the middle part of the first tube plate (18), and the right end face of the tube (10) is fixedly connected with the middle part of the second tube plate (19); a rubber pad (11) is adhered to the inner cavity surface of the right side of the shell (1) through an adhesive, and the left end surface of the rubber pad (11) is tightly adhered to the lower end surface of the second tube plate (19); a round hole is formed in the inner cavity surface of the right side of the shell (1), and the diameter of the round hole formed in the inner cavity surface of the right side of the shell (1) is equal to that of the round hole in the rubber pad (11); the inner circumferential surface of the pipe (10) is provided with a plurality of internal baffle plates (16), and the outer circumferential surface of the pipe (10) is fixedly connected with five external baffle plates (17); the upper part of the right end face of the first tube plate (18) is fixedly connected with a buffer plate (20), and the right end face of the buffer plate (20) is fixedly connected with the upper part of the left end face of one of the external tube baffle plates (17); the left end and the right end of the lower side of the outer peripheral surface of the shell (1) are respectively welded with one support frame (6), and the lower end surfaces of the two support frames (6) are respectively welded with one support frame base (7); the lower side of the outer peripheral surface of the shell (1) is provided with three rectangular openings (12), and the three rectangular openings (12) arranged on the lower side of the outer peripheral surface of the shell (1) are connected with one dirt settling box (13) through bolts; the bottom end face of each of the three dirt settling boxes (13) is fixedly connected with one of the sewage discharge pipes (14), and the three sewage discharge pipes (14) are provided with one of the valves (15).

2. A fluoroplastic shell and tube heat exchanger based on novel structure as claimed in claim 1 wherein: the number of the tubes (10) is several, and the several tubes (10) are distributed in an annular array between the first tube plate (18) and the second tube plate (19).

3. A fluoroplastic shell and tube heat exchanger based on novel structure as claimed in claim 1 wherein: the shape of the plurality of baffle plates (16) in the pipe is an arch baffle plate, and the plurality of baffle plates (16) in the pipe are distributed in the pipe (10) at equal intervals.

4. A fluoroplastic shell and tube heat exchanger based on novel structure as claimed in claim 1 wherein: the thickness of the buffer plate (20) is one centimeter to two centimeters, and the shape of the buffer plate (20) is arc-shaped.

5. A fluoroplastic shell and tube heat exchanger based on novel structure as claimed in claim 1 wherein: the depth of each of the three dirt settling boxes (13) is ten centimeters to fifteen centimeters, and the thickness of each of the three dirt settling boxes (13) is one centimeter.