CN218673272U

CN218673272U - Novel sealed silicon carbide tubular heat exchanger

Info

Publication number: CN218673272U
Application number: CN202222949041.8U
Authority: CN
Inventors: 李中刚; 赵亚娟; 夏汉林
Original assignee: Ikost Graphite Technology Jiangsu Co ltd
Current assignee: Ikost Graphite Technology Jiangsu Co ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-03-21
Anticipated expiration: 2032-11-07

Abstract

The utility model discloses a novel sealed silicon carbide tubular heat exchanger, in particular to the technical field of sealing of silicon carbide heat exchangers, which comprises a heat exchanger shell, wherein a sealing head is arranged at the top end of the heat exchanger shell, and a feeding pipe is integrally formed at the top of the sealing head; a cooling water outlet pipe is integrally formed on the outer side of the heat exchanger shell; the top end of the heat exchanger shell and the bottom end of the end socket are provided with first tube plates which are made of PFA materials; the bottom end of the first tube plate is provided with a second tube plate which is made of carbon steel; the second tube sheet is located the top of heat exchanger shell, the utility model discloses, through set up the second seal cover between first mounting groove inner wall and the carborundum pipe outside, seal the junction between first tube sheet and the carborundum pipe of PFA material, the first tube sheet of PFA material softens when preventing the material high temperature, influences the sealed effect between first tube sheet and the carborundum pipe, prevents that the weeping phenomenon from appearing.

Description

Novel sealed silicon carbide tubular heat exchanger

Technical Field

The utility model relates to a carborundum heat exchanger seals technical field, specifically is novel sealed carborundum tubular heat exchanger.

Background

The silicon carbide heat exchanger is a novel heat exchanger which uses silicon carbide ceramic material as heat transfer medium. Because the silicon carbide ceramic has the excellent characteristics of corrosion resistance, high temperature resistance, high thermal conductivity, high hardness, wear resistance and the like, the silicon carbide ceramic heat exchanger meets the use requirements of high-temperature and corrosion-resistant environments;

because the material that the carborundum heat exchanger corresponds has very strong corrosion properties, so the tube sheet must adopt the PFA material, but to the higher material of import temperature, it is the PFA tube sheet to contact earlier after getting into equipment, but because the PFA material is not high temperature resistant, consequently the tetrafluoro screw thread that is used for carborundum tube sealing can be because high temperature softening makes its sealed temperature appear, thereby causes the weeping, for this reason, we propose novel sealed carborundum tubular heat exchanger and are used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the PTFE material cannot resist high temperature, the PTFE thread used for sealing the silicon carbide pipe can generate temperature due to high-temperature softening, so that liquid leakage is caused; an object of the utility model is to provide a novel sealed carborundum tubular heat exchanger.

In order to achieve the above object, the utility model provides a following technical scheme: the novel sealed silicon carbide tubular heat exchanger comprises a heat exchanger shell, wherein a seal head is arranged at the top end of the heat exchanger shell, and a feeding pipe is integrally formed at the top of the seal head; a cooling water outlet pipe is integrally formed on the outer side of the heat exchanger shell; the top end of the heat exchanger shell and the bottom end of the end socket are provided with first tube plates which are made of PFA materials; the bottom end of the first tube plate is provided with a second tube plate which is made of carbon steel; the second tube plate is positioned at the top end of the heat exchanger shell, a plurality of silicon carbide tubes are uniformly distributed between the first tube plate and the second tube plate, a first mounting groove matched with the silicon carbide tubes for use is formed in the first tube plate, the silicon carbide tubes are installed in the first mounting groove in a threaded manner, a second mounting groove matched with the silicon carbide tubes for use is formed in the second tube plate, and the silicon carbide tubes are installed in the second mounting groove in a threaded manner;

preferably, a second sealing sleeve is arranged between the inner wall of the first mounting groove and the outer side of the silicon carbide pipe, and a first sealing sleeve is arranged between the inner wall of the second mounting groove and the outer side of the silicon carbide pipe.

Preferably, the heat exchanger shell, the end socket, the first tube plate and the second tube plate are fixedly connected through fixing bolts.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. through set up the second seal cover between first mounting groove inner wall and carborundum pipe outside, seal the junction between PFA material's first tube sheet and the carborundum pipe, the first tube sheet of PFA material becomes soft when preventing the material high temperature, influences the sealed effect between first tube sheet and the carborundum pipe, prevents that the weeping phenomenon from appearing.

2. Through the second tube sheet that sets up the carbon steel material, and with the carborundum union coupling, second tube sheet and coolant liquid contact, support first tube sheet, promote the stability of the carborundum pipe of first tube sheet connection and the whole installation stability of carborundum pipe, and set up first seal cover between second mounting groove inner wall and carborundum pipe outside, the junction seals between second tube sheet and the carborundum pipe of carbon steel material, prevent that the coolant liquid from shifting up through second tube sheet and carborundum union coupling and getting into in the head, influence the cooling quality and the quality of material.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1 according to the present invention.

Fig. 3 is an enlarged view of the point B in fig. 1 according to the present invention.

In the figure: 1. a heat exchanger housing; 2. sealing the end; 21. a feed pipe; 3. a cooling water outlet pipe; 4. a first tube sheet; 401. a first mounting groove; 5. a second tube sheet; 501. a second mounting groove; 6. a silicon carbide tube; 7. a second seal cartridge; 8. a first seal cartridge; 10. and (5) fixing the bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The first embodiment is as follows: as shown in fig. 1-3, the utility model provides a novel sealed silicon carbide tubular heat exchanger, which comprises a heat exchanger shell 1, wherein a seal head 2 is arranged at the top end of the heat exchanger shell 1, a feed pipe 21 is integrally formed at the top of the seal head 2, and materials enter the seal head 2 through the feed pipe 21; a cooling water outlet pipe 3 is integrally formed on the outer side of the heat exchanger shell 1, and cooling water is discharged through the cooling water outlet pipe 3; the top end of the heat exchanger shell 1 and the bottom end of the end enclosure 2 are provided with first tube plates 4, and the first tube plates 4 are made of PFA materials; the bottom end of the first tube plate 4 is provided with a second tube plate 5, the second tube plate 5 is positioned at the top end of the heat exchanger shell 1, and the heat exchanger shell 1, the seal head 2, the first tube plate 4 and the second tube plate 5 are fixedly connected through a fixing bolt 10;

a plurality of silicon carbide tubes 6 are uniformly distributed between the first tube plate 4 and the second tube plate 5, a first installation groove 401 matched with the silicon carbide tubes 6 for use is formed in the first tube plate 4, and the silicon carbide tubes 6 are installed in the first installation groove 401 in a threaded manner; be equipped with second seal cover 7 between first mounting groove 401 inner wall and the carborundum pipe 6 outside, through set up second seal cover 7 between first mounting groove 401 inner wall and carborundum pipe 6 outside, seal the junction between PFA material's first tube sheet 4 and carborundum pipe 6, PFA material's first tube sheet 4 softens when preventing the material high temperature, influences the sealed effect between first tube sheet 4 and the carborundum pipe 6, prevents that the weeping phenomenon from appearing.

Example two: as shown in fig. 1 and 3, the second tube plate 5 is made of carbon steel, the second tube plate 5 made of carbon steel is arranged at the bottom end of the first tube plate 4, and the second tube plate 5 is in contact with the cooling liquid to support the first tube plate 4, so that the stability of the first tube plate 4 connected with the silicon carbide tube 6 is improved; offer on the second tube sheet 5 with the second mounting groove 501 that carborundum pipe 6 cooperation was used, carborundum pipe 6 threaded mounting is in second mounting groove 501, carry out second tube sheet 5, connection between carborundum pipe 6, the stability after carborundum pipe 6 connects has further been promoted, be equipped with first seal cover 8 between second mounting groove 501 inner wall and the carborundum pipe 6 outside, through set up first seal cover 8 between second mounting groove 501 inner wall and carborundum pipe 6 outside, the junction seals between second tube sheet 5 and the carborundum pipe 6 of carbon steel material, prevent that the coolant liquid from shifting up through second tube sheet 5 and carborundum pipe 6 junction and get into head 2, influence the cooling quality and the quality of material.

The working principle is as follows: a second tube plate 5 made of carbon steel is arranged at the bottom end of a first tube plate 4 made of PFA material in the original silicon carbide heat exchanger, a silicon carbide tube 6 is installed in a second installation groove 501 in a threaded mode, connection between the second tube plate 5 and the silicon carbide tube 6 is conducted, the second tube plate 5 is in contact with cooling liquid, the first tube plate 4 is supported, and the stability of the first tube plate 4 in connection with the silicon carbide tube 6 and the overall installation stability of the silicon carbide tube 6 are improved;

a second sealing sleeve 7 is arranged between the inner wall of the first mounting groove 401 and the outer side of the silicon carbide tube 6 to seal the joint between the PFA first tube plate 4 and the silicon carbide tube 6, so that the PFA first tube plate 4 is prevented from being softened at high temperature to influence the sealing effect between the first tube plate 4 and the silicon carbide tube 6, and liquid leakage is prevented;

and set up first seal cover 8 between second mounting groove 501 inner wall and carborundum pipe 6 outside, seal the junction between second tube sheet 5 and the carborundum pipe 6 of carbon steel material, prevent that the coolant liquid from moving up through second tube sheet 5 and carborundum pipe 6 junction and getting into in head 2, influence the cooling quality and the quality of material.

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 alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Novel sealed carborundum tubular heat exchanger, including heat exchanger casing (1), its characterized in that: the heat exchanger comprises a heat exchanger shell (1) and is characterized in that a seal head (2) is arranged at the top end of the heat exchanger shell (1), a first tube plate (4) is arranged at the top end of the heat exchanger shell (1) and the bottom end of the seal head (2), a second tube plate (5) is arranged at the bottom end of the first tube plate (4), a plurality of silicon carbide tubes (6) are uniformly distributed between the first tube plate (4) and the second tube plate (5), a first mounting groove (401) matched with the silicon carbide tubes (6) in use is formed in the first tube plate (4), the silicon carbide tubes (6) are installed in the first mounting groove (401) in a threaded manner, a second mounting groove (501) matched with the silicon carbide tubes (6) in use is formed in the second tube plate (5), and the silicon carbide tubes (6) are installed in the second mounting groove (501) in a threaded manner;

be equipped with second seal cover (7) between first mounting groove (401) inner wall and carborundum pipe (6) outside, be equipped with first seal cover (8) between second mounting groove (501) inner wall and carborundum pipe (6) outside.

2. The novel sealed silicon carbide tubular heat exchanger of claim 1, wherein: the first tube plate (4) is made of PFA materials.

3. The novel sealed silicon carbide tubular heat exchanger of claim 1, wherein: the second tube plate (5) is made of carbon steel.

4. The novel sealed silicon carbide tubular heat exchanger of claim 1, wherein: the heat exchanger shell (1), the end socket (2), the first tube plate (4) and the second tube plate (5) are fixedly connected through a fixing bolt (10).

5. The novel sealed silicon carbide tubular heat exchanger of claim 1, wherein: the top of the seal head (2) is integrally formed with a feeding pipe (21).

6. The novel sealed silicon carbide tubular heat exchanger of claim 1, wherein: and a cooling water outlet pipe (3) is integrally formed on the outer side of the heat exchanger shell (1).