Wound tube type heat exchanger

Abstract

The utility model discloses a coiled tube type heat exchanger which comprises a shell, two supporting blocks are fixedly connected to the bottom of the shell, a feeding pipe and a discharging pipe are fixedly connected to the upper portion of the shell, and sealing covers are arranged on the two sides of the shell. Through the arrangement of the first bolt, the sealing cover, the second bolt, the mounting groove and the second bolt, the first bolt is screwed off, the sealing cover is rotated until the threaded sleeve is screwed off from the threaded rod, then the second bolt is screwed off, and the spiral heat exchange tube is pulled out through the mounting groove, so that the spiral heat exchange tube can be overhauled or replaced, and the use convenience of the device is improved; and through the arrangement of a feeding pipe, a filter screen, a deslagging pipe and a material blocking cover, impurities can be filtered and prevented from entering the spiral heat exchange pipe, so that the spiral heat exchange pipe is prevented from being blocked, the use stability of the device is improved, and the service life of the spiral heat exchange pipe is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a coiled tube heat exchanger. Background Art

[0002] A coiled-tube heat exchanger is a common heat exchange device used in industrial production. It transfers energy between the fluid inside and outside the pipe by transferring heat between the two fluids. It is a type of tubular heat exchanger. Its working principle is to directly exchange heat between the internal and external fluids through a spiral tube with a smaller inner diameter and a fixed tube with a larger outer diameter. However, the heat exchange tubes in existing coiled-tube heat exchangers are fixed to the inner wall of the heat exchanger, making it difficult to remove and replace damaged heat exchange tubes and difficult to repair them, which affects the heat exchanger's operating stability. Therefore, to correct these shortcomings, we have proposed a coiled-tube heat exchanger. Utility Model Content

[0003] The technical problem solved by the utility model is to overcome the provision of the prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a coiled tube heat exchanger, comprising a shell: two support blocks are fixedly connected to the bottom of the shell, a feed pipe and a discharge pipe are fixedly connected above the shell, and sealing covers are provided on both sides of the shell, a plurality of first bolts pass through the sealing covers, and threaded grooves matching the first bolts are provided on both side walls of the shell, a feed pipe and a discharge pipe are fixedly connected to the two sealing covers, and two mounting grooves are provided in the shell.

[0005] Preferably, a plurality of second bolts pass through the two mounting grooves, a plurality of threaded grooves matching the second bolts are provided on the inner wall of the shell, a plurality of spiral heat exchange tubes are fixedly connected between the two mounting grooves, the diameters of the two mounting grooves are equal to the inner diameter of the shell, and the two mounting grooves are symmetrically arranged with the center of the spiral heat exchange tube as the center line.

[0006] Preferably, a threaded rod is fixedly connected to the side walls of the two mounting grooves, a threaded sleeve is threadedly connected to the threaded rod, and the threaded sleeve is fixedly connected to the inner wall of the sealing cover.

[0007] Preferably, anti-slip grooves are provided on the bottoms of the two support blocks, and the two support blocks are symmetrically arranged with the center of the shell as the center line.

[0008] Preferably, a filter screen is fixedly connected to the inner wall of the feed pipe, and a slag discharge pipe is fixedly connected to the feed pipe, and a material blocking cover is threadedly connected to the slag discharge pipe.

[0009] Preferably, a plurality of the first bolts are distributed in a ring shape with the center of the sealing cover as the center line, and a plurality of the second bolts are distributed in a ring shape with the center of the installation groove as the center line.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: through the arrangement of the first bolt, the sealing cover, the second bolt, the mounting groove and the second bolt, the first bolt is unscrewed, the sealing cover is rotated until the threaded sleeve is unscrewed from the threaded rod, and then the second bolt is unscrewed, and the spiral heat exchange tube is pulled out through the mounting groove, so that the spiral heat exchange tube can be inspected or replaced, thereby improving the convenience of using the device; through the arrangement of the feed pipe, the filter screen, the slag discharge pipe and the material blocking cover, impurities can be filtered to prevent impurities from entering the spiral heat exchange tube, thereby avoiding blockage of the spiral heat exchange tube, improving the stability of the device, and increasing the service life of the spiral heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a partial three-dimensional diagram of the utility model.

[0012] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 3 It is a side view of the housing and the mounting slot of the utility model.

[0014] Figure 4 For the utility model Figure 1 side view.

[0015] Numbers in the figure: 1. Shell; 2. Support block; 3. Feed pipe; 4. Discharge pipe; 5. Sealing cover; 6. First bolt; 7. Feed pipe; 8. Discharge pipe; 9. Mounting groove; 10. Second bolt; 11. Spiral heat exchange tube; 12. Threaded rod; 13. Threaded sleeve; 14. Filter screen; 15. Slag discharge pipe; 16. Material blocking cover. DETAILED DESCRIPTION

[0016] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0017] See also Figure 1-4The utility model provides a technical solution: a coiled tube heat exchanger, comprising a shell 1: two supporting blocks 2 are fixedly connected to the bottom of the shell 1, a feed pipe 3 and a discharge pipe 4 are fixedly connected above the supporting blocks 2, and sealing covers 5 are provided on both sides of the shell 1, a plurality of first bolts 6 pass through the sealing covers 5, and threaded grooves matching the first bolts 6 are provided on both side walls of the shell 1, a feed pipe 7 and a discharge pipe 8 are fixedly connected to the two sealing covers 5, two mounting grooves 9 are provided in the shell 1, a plurality of second bolts 10 pass through the two mounting grooves 9, a plurality of threaded grooves matching the second bolts 10 are provided on the inner wall of the shell 1, and a plurality of spiral heat exchange tubes 11 are fixedly connected between the two mounting grooves 9.

[0018] During use, the hot fluid is introduced into the shell 1 through the feed pipe 3 and discharged through the discharge pipe 4, and then the cold fluid is introduced into the spiral heat exchange tube 11 through the feed pipe 7 and discharged through the discharge pipe 8. In the process of the cold fluid passing through the feed pipe 7, impurities in the cold fluid are filtered through the filter mesh 14. In the process of the cold fluid passing through the spiral heat exchange tube 11, the setting of the spiral heat exchange tube 11 allows the cold fluid to fully contact the hot fluid, thereby realizing heat exchange.

[0019] Preferably, the fixing stability of the mounting groove 9 is improved to prevent shaking. The diameter of the two mounting grooves 9 is equal to the inner diameter of the shell 1, which improves the fixing stability of the spiral heat exchange tube 11, and the two mounting grooves 9 are symmetrically arranged with the center of the spiral heat exchange tube 11 as the center line. The mounting groove 9 can be fixed on the sealing cover 5 by setting the threaded sleeve 13 and the threaded rod 12, thereby improving the positioning stability of the mounting groove 9. The side walls of the two mounting grooves 9 are fixedly connected with a threaded rod 12, and the threaded sleeve 13 is threadedly connected to the threaded rod 12. The threaded sleeve 13 is fixedly connected to the inner wall of the sealing cover 5.

[0020] When it is necessary to discharge impurities in the feed pipe 7, unscrew the material blocking cover 16 to guide out the impurities. When it is necessary to repair or replace the spiral heat exchange tube 11, unscrew the first bolt 6 and rotate the sealing cover 5 until the threaded sleeve 13 is unscrewed from the threaded rod 12.

[0021] Preferably, the friction force at the bottom of the support block 2 is increased by anti-slip grooves. The bottoms of the two support blocks 2 are provided with anti-slip grooves, and the force is evenly distributed, thereby improving the stability of the shell 1. The two support blocks 2 are symmetrically arranged with the center of the shell 1 as the center line. Impurities in the cold fluid are filtered through a filter 14 to avoid blocking the spiral heat exchange tube 11. A filter 14 is fixedly connected to the inner wall of the feed pipe 7, and a slag discharge pipe 15 is fixedly connected to the feed pipe 7. A material blocking cover 16 is threadedly connected to the slag discharge pipe 15.

[0022] Then, the second bolt 10 is unscrewed, and the spiral heat exchange tube 11 is pulled out through the installation groove 9 , and the spiral heat exchange tube 11 can be inspected or replaced.

[0023] Preferably, by setting the first bolt 6 and the second bolt 10, the installation stability of the sealing cover 5 and the mounting groove 9 can be improved. Several first bolts 6 are distributed in a ring shape with the center of the sealing cover 5 as the center line, and several second bolts 10 are distributed in a ring shape with the center of the mounting groove 9 as the center line.

[0024] After the inspection or replacement is completed, the installation groove 9 and the spiral heat exchange tube 11 are inserted into the shell 1, and the second bolt 10 is re-tightened. Then, the threaded sleeve 13 on the sealing cover 5 is installed on the threaded rod 12. At this time, the first bolt 6 is re-tightened to complete the installation of the spiral heat exchange tube 11. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coiled tube heat exchanger, characterized in that: The invention comprises a shell (1): two support blocks (2) are fixedly connected to the bottom of the shell (1), the bottoms of the two support blocks (2) are provided with anti-slip grooves, and the two support blocks (2) are symmetrically arranged about the central axis of the shell (1), and a feed pipe (3) and a discharge pipe (4) are fixedly connected above the support blocks (2), and sealing covers (5) are provided on both sides of the shell (1), a plurality of first bolts (6) pass through the sealing covers (5), and thread grooves matching the first bolts (6) are provided on the two side walls of the shell (1), a feed pipe (7) and a discharge pipe (8) are fixedly connected to the two sealing covers (5), two mounting grooves (9) are provided in the shell (1), a plurality of second bolts (10) pass through the two mounting grooves (9), and the shell (1) The inner wall of the housing (1) is provided with a plurality of threaded grooves matching the second bolts (10), a plurality of spiral heat exchange tubes (11) are fixedly connected between the two mounting grooves (9), a filter screen (14) is fixedly connected to the inner wall of the feed pipe (7), and a slag discharge pipe (15) is fixedly connected to the feed pipe (7), and a material blocking cover (16) is threadedly connected to the slag discharge pipe (15), the diameter of the two mounting grooves (9) is equal to the inner diameter of the housing (1), and the two mounting grooves (9) are symmetrically arranged about the central axis of the spiral heat exchange tube (11), the side walls of the two mounting grooves (9) are fixedly connected with threaded rods (12), the threaded rods (12) are threadedly connected with threaded sleeves (13), and the threaded sleeves (13) are fixedly connected to the inner wall of the sealing cover (5).

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