A large-scale baffle rod heat exchanger for petrochemical industry and its use method

Abstract

The present invention relates to the field of heat exchange technology, and discloses a large-scale baffle rod heat exchanger for petrochemical industry and a method of using the same, comprising a tubular shell, a first flange fixedly installed at one end of the tubular shell, a sealing ring attached to the left side of the first flange, a slide groove opened inside the tubular shell, a second flange provided on the left side of the first flange, an annular groove provided on the right side of the second flange, the sealing ring clamped in the annular groove, and the second flange is fitted with the first flange by bolts, a sliding rod fixedly installed on the right side of the second flange, and the sliding rod is slidably connected to the slide groove. The heat exchange tube of the present invention is fixedly connected to the second flange, and the heat exchange tube can be taken out, which is convenient for cleaning the scale on the heat exchange tube and inside the tubular shell; through the flow limiting tube, when the flow rate of the liquid to be heat exchanged increases, the ball will compress the spring to block the opening to avoid excessive flow rate, which will cause the flow rate of the heat exchange tube to be too high and the heat exchange effect to be poor.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchange, in particular to a large-scale baffle rod heat exchanger for petrochemical industry and a use method thereof. Background Art

[0002] Heat exchangers are an important unit equipment in industries such as oil refining, chemical industry, environmental protection, energy, and electric power, especially shell and tube heat exchangers are widely used. The working principle of shell and tube heat exchangers is: two fluids, one flows in the tube, and the other flows on the shell side, and the heat exchange process is completed between the two through the heat exchange tube bundle. In order to meet the purpose of supporting the heat exchange tube bundle and improving heat exchange, baffles are usually set in the shell to change the flow direction of the shell side fluid and increase the fluid turbulence.

[0003] However, the current baffle rod heat exchanger is not easy to disassemble and clean the internal heat exchange tubes, resulting in scale accumulation and affecting the heat exchange efficiency. Summary of the invention

[0004] The object of the present invention is to provide a large-scale baffle rod heat exchanger for petrochemical industry and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A large-scale baffle rod heat exchanger for petrochemical industry comprises a tubular shell, a first flange is fixedly installed at one end of the tubular shell, a sealing ring is attached to the left side of the first flange, a slide groove is opened inside the tubular shell, a second flange is provided on the left side of the first flange, an annular groove is provided on the right side of the second flange, the sealing ring is clamped in the annular groove, and the second flange is fitted with the first flange by bolts, a sliding rod is fixedly installed on the right side of the second flange, the sliding rod is slidably connected to the slide groove, a plurality of heat exchange tubes are fixedly connected to the right side of the second flange, and a fixed A fixed plate is fixedly installed with a partition plate on the left side of the second flange, an upper cover is fixedly installed with the left side of the second flange, the interior of the upper cover is fixedly connected to the partition plate, the upper and lower ends of the upper cover are respectively fixedly connected with the second water outlet pipe and the second water inlet pipe, the lower end of the second water inlet pipe is fixedly connected with the limiting flow pipe, the lower end of the limiting flow pipe is provided with a through opening, the through opening is connected with the second water inlet pipe, a ball is slidably provided in the through opening, the upper end of the ball is fixedly connected with a spring, a cross bar is horizontally fixedly installed on the upper end of the through opening, the lower end of the cross bar is fixedly connected to the spring, and grooves are provided on both sides of the through opening.

[0007] As a preferred solution of the previous step, a first water outlet pipe and a first water inlet pipe are fixedly installed at the upper and lower ends of the tubular shell, respectively, and the first water outlet pipe and the first water inlet pipe are connected to the interior of the tubular shell.

[0008] As a preferred solution of the previous step, a heat-insulating layer is attached to the inner interlayer of the tubular shell, the thickness of the heat-insulating layer is three centimeters, and the material of the heat-insulating layer is aluminum silicate.

[0009] As a preferred solution of the previous step, there are four sliding rods, which are located in the up, down, front and back directions of the heat exchange tubes. A baffle ring is fixedly installed between the four heat exchange tubes, and a baffle rod is fixedly installed in the baffle ring. The heat exchange tube is maintained in a horizontal and stable state by the clamping of the baffle rod.

[0010] As a preferred solution of the previous step, the fixed disk at the right end of the heat exchange tube is hollow, and the heat exchange tube is connected to the interior of the fixed disk, and the heat exchange tube is connected to the interior of the left end upper cover.

[0011] As a preferred solution of the previous step, the sphere is arranged to fit the inner wall of the through opening, and the upper end of the through opening is arranged in a conical shape.

[0012] A method for using a large-scale baffled rod heat exchanger for petrochemical industry comprises the following steps: 1) hot water enters from a first water inlet pipe and flows out from a first water outlet pipe; 2) liquid to be heat exchanged is added from a second water inlet pipe, passes through a lower part of an upper cover, enters a heat exchange tube of a lower part, enters a heat exchange tube of an upper part, and flows out from a second water outlet pipe.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) In the present invention, the second flange and the first flange can be opened by bolts, and the heat exchange tube is fixedly connected to the second flange, so that the heat exchange tube can be taken out, which is convenient for cleaning scale on the heat exchange tube and inside the tubular shell.

[0015] (2) The present invention uses a flow limiting tube so that when the liquid to be heat exchanged passes through the flow limiting tube, it will exert pressure on the ball. At the same time, the liquid to be heat exchanged flows into the second water inlet pipe through the groove. When the flow rate of the liquid to be heat exchanged increases, the ball will compress the spring to block the opening, thereby preventing the flow rate from being too high, causing the flow rate of the heat exchange tube to be too high and resulting in poor heat exchange effect.

[0016] (3) The present invention increases the heat exchange time by dividing the heat exchange tube into two parts, the upper part and the lower part, thereby improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the present invention;

[0018] Figure 2 It is a schematic diagram of the partial explosion structure of the present invention;

[0019] Figure 3 This is a schematic diagram of a partial explosion structure in another direction of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the tubular housing of the present invention;

[0021] Figure 5 For the present invention Figure 1 A partial enlarged view of middle A.

[0022] In the figure: 1, tubular shell, 2, first water outlet pipe, 3, first water inlet pipe, 4, first flange, 5, second flange, 6, second water outlet pipe, 7, upper cover, 8, second water inlet pipe, 9, dividing plate, 10, sliding rod, 11, heat exchange tube, 12, fixed plate, 13, deflector rod, 14, annular groove, 15, insulation layer, 16, sealing ring, 17, slide groove, 18, cross bar, 19, spring, 20, groove, 21, ball, 22, through port, 23, flow limiting tube, 24, deflector. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-5The present invention provides a technical solution: a large-scale baffle rod heat exchanger for petrochemical industry and a method for using the same, comprising a tubular shell 1, wherein a first water outlet pipe 2 and a first water inlet pipe 3 are fixedly installed at the upper and lower ends of the tubular shell 1, respectively, and the first water outlet pipe 2 and the first water inlet pipe 3 are connected to the inside of the tubular shell 1, and an insulation layer 15 is attached to the inner interlayer of the tubular shell 1, and the thickness of the insulation layer 15 is three centimeters. The material of the insulation layer 15 is aluminum silicate, and the insulation layer 15 can effectively prevent the dissipation of heat, prevent the waste of heat energy, and reduce the heat exchange efficiency. A first flange 4 is fixedly installed at one end of the tubular shell 1, and a sealing ring 16 is attached to the left side of the first flange 4. A slide groove 17 is provided inside the tubular shell 1, and a second flange 5 is provided on the left side of the first flange 4. The second flange 5 is provided with an annular groove 14 on the right side, and the sealing ring 16 is clamped in the annular groove 14, and the second flange 5 is fitted with the first flange 4 by bolts, and a slide rod 10 is fixedly installed on the right side of the second flange 5, and the slide rod 10 is slidably connected with the slide groove 17. There are four slide rods 10, and the four slide rods 10 are located in the four directions of up, down, front and back of the heat exchange tube 11. A baffle ring 24 is fixedly installed between the four heat exchange tubes 11, and a baffle rod 13 is fixedly installed in the baffle ring 24. The heat exchange tube 11 is held in a horizontal and stable state by the baffle rod 13. The baffle rod 13 prevents the heat exchange tube 11 from bending due to gravity and the flow of water in the tubular shell 1 when the liquid in the heat exchange tube 11 flows, and the baffle rod 13 keeps it stable, and at the same time, the water in the tubular shell 1 is disturbed. To achieve a better heat exchange effect, a plurality of heat exchange tubes 11 are fixedly connected to the right side of the second flange 5, and a fixed disk 12 is fixedly connected to the right end of the heat exchange tube 11. The fixed disk 12 at the right end of the heat exchange tube 11 is hollow, and the heat exchange tube 11 is connected to the inside of the fixed disk 12, and the heat exchange tube 11 is connected to the inside of the left end upper cover 7. The heat exchange tube 11 is divided into an upper and lower part by a dividing disk 9, so that the lower heat exchange tube 11 is close to the upper heat exchange tube 11 and the liquid in the lower heat exchange tube 11 flows into the fixed disk 12, and then flows into the upper heat exchange tube 11. The heat exchange effect is better through the lower heat exchange tube 11 and the upper heat exchange tube 11. The second flange 5 and the first flange 4 can be opened by bolts, and the heat exchange tube 11 is fixedly connected to the second flange 5, so that the heat exchange The tube 11 is taken out to facilitate cleaning of scale on the heat exchange tube 11 and inside the tubular shell 1. A partition plate 9 is fixedly installed on the left side of the second flange 5. An upper cover 7 is fixedly installed on the left side of the second flange 5. The upper cover 7 is fixedly connected to the partition plate 9. The upper and lower ends of the upper cover 7 are respectively fixedly connected to the second water outlet pipe 6 and the second water inlet pipe 8. The lower end of the second water inlet pipe 8 is fixedly connected to the limiting flow pipe 23. The lower end of the limiting flow pipe 23 is provided with a through hole 22, and the through hole 22 is connected to the second water inlet pipe 8. A ball 21 is slidably provided in the through hole 22. The ball 21 is fitted with the inner wall of the through hole 22, and the upper end of the through hole 22 is conical. When the flow rate of the heat exchange liquid increases, the ball 21 will compress the spring 19 to block the through hole 22 to avoid excessive flow rate, which will cause the flow rate of the heat exchange tube 11 to be too high.The heat exchange effect is poor. The upper end of the ball 21 is fixedly connected with a spring 19, and the upper end of the through-hole 22 is horizontally fixedly installed with a crossbar 18. The lower end of the crossbar 18 is fixedly connected to the spring 19. Grooves 20 are opened on both sides of the through-hole 22. Through the flow-limiting tube 23, when the liquid to be heat exchanged passes through the flow-limiting tube 23, a pressure will be applied to the ball 21. At the same time, the liquid to be heat exchanged flows into the second water inlet pipe 8 through the groove 20. When the flow rate of the liquid to be heat exchanged increases, the ball 21 will compress the spring 19 and block the through-hole 22 to avoid excessive flow rate, which will make the flow rate of the heat exchange tube 11 too high and cause poor heat exchange effect.

[0025] When in use, water with heat enters through the first water inlet pipe 3 and flows out from the first water outlet pipe 2. Then, the liquid that needs to exchange heat enters from the second water inlet pipe 8, passes through the interior of the upper cover 7, and flows into the heat exchange tube 11. Finally, the liquid after heat exchange flows back to the interior of the upper cover 7 and flows out from the second water outlet pipe 6. At the same time, the upper cover 7 separates the liquid after heat exchange and the liquid not exchanged with heat into two parts through a partition plate to facilitate heat exchange. The second flange 5 and the first flange 4 can be opened by bolts. At the same time, the heat exchange tube 11 and The second flange 5 is fixedly connected, and the heat exchange tube 11 can be taken out, which is convenient for cleaning the scale on the heat exchange tube 11 and the inside of the tubular shell 1. Finally, through the flow limiting tube 23, when the liquid to be heat exchanged passes through the flow limiting tube 23, it will exert pressure on the ball 21. At the same time, the liquid to be heat exchanged flows into the second water inlet pipe 8 through the groove 20. When the flow rate of the liquid to be heat exchanged increases, the ball 21 will compress the spring 19 to block the opening 22 to avoid excessive flow rate, which will make the flow rate of the heat exchange tube 11 too high and the heat exchange effect poor.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-scale baffle rod heat exchanger for petrochemical industry, comprising a tubular shell (1), characterized in that: A first flange (4) is fixedly mounted on one end of the tubular housing (1), a sealing ring (16) is attached to the left side of the first flange (4), a sliding groove (17) is provided inside the tubular housing (1), a second flange (5) is provided on the left side of the first flange (4), an annular groove (14) is provided on the right side of the second flange (5), the sealing ring (16) is clamped in the annular groove (14), and the second flange (5) is attached to the first flange (4) by bolts, a sliding rod (10) is fixedly mounted on the right side of the second flange (5), and the The slide bar (10) is slidably connected to the slide groove (17); a plurality of heat exchange tubes (11) are fixedly connected to the right side of the second flange (5); a fixed plate (12) is fixedly connected to the right end of the heat exchange tube (11); a partition plate (9) is fixedly installed on the left side of the second flange (5); an upper cover (7) is fixedly installed on the left side of the second flange (5); the interior of the upper cover (7) is fixedly connected to the partition plate (9); the upper and lower ends of the upper cover (7) are respectively fixedly connected to a second water outlet pipe (6) and a second water inlet pipe (8); the lower end of the second water inlet pipe (8) is fixedly connected to the The end of the tubular housing (1) is fixedly connected to a flow limiting tube (23), a through-hole (22) is provided at the lower end of the flow limiting tube (23), the through-hole (22) is communicated with the second water inlet pipe (8), a ball (21) is slidably arranged in the through-hole (22), a spring (19) is fixedly connected to the upper end of the ball (21), a cross bar (18) is horizontally fixedly installed at the upper end of the through-hole (22), the lower end of the cross bar (18) is fixedly connected to the spring (19), and grooves (20) are provided on both sides of the through-hole (22); the upper and lower ends of the tubular housing (1) are respectively A first water outlet pipe (2) and a first water inlet pipe (3) are fixedly installed respectively, and the first water outlet pipe (2) and the first water inlet pipe (3) are connected to the inside of the tubular shell (1); there are four sliding rods (10), and the four sliding rods (10) are located in the four directions of the upper, lower, front and back of the heat exchange tube (11); a baffle ring (24) is fixedly installed between the four heat exchange tubes (11), and a baffle rod (13) is fixedly installed inside the baffle ring (24); the heat exchange tube (11) is kept in a horizontal and stable state by being clamped by the baffle rod (13).

2. A large-scale baffle rod heat exchanger for petrochemical industry according to claim 1, characterized in that: A heat-insulating layer (15) is attached to the inner interlayer of the tubular shell (1); the thickness of the heat-insulating layer (15) is three centimeters, and the material of the heat-insulating layer (15) is aluminum silicate.

3. A large-scale baffle rod heat exchanger for petrochemical industry according to claim 1, characterized in that: The fixed disk (12) at the right end of the heat exchange tube (11) is in a hollow state, and the heat exchange tube (11) is connected to the interior of the fixed disk (12), and the heat exchange tube (11) is connected to the interior of the left end upper cover (7).

4. A large-scale baffle rod heat exchanger for petrochemical industry according to claim 1, characterized in that: The sphere (21) is arranged in close contact with the inner wall of the through opening (22), and the upper end of the through opening (22) is arranged in a conical shape.

5. The method for using a large-scale baffled rod heat exchanger for petrochemical industry according to any one of claims 1 to 4, characterized in that: The method comprises the following steps: 1) allowing hot water to enter from a first water inlet pipe (3) and to flow out from a first water outlet pipe (2); 2) allowing liquid to be added from a second water inlet pipe (8), to pass through the lower part of an upper cover (7), enter the heat exchange pipe (11) of the lower part, and then enter the heat exchange pipe (11) of the upper part, and then flow out from the second water outlet pipe (6).

Images