CN217585479U

CN217585479U - Sealing device for non-metal heat exchange tube and tube plate

Info

Publication number: CN217585479U
Application number: CN202221192420.0U
Authority: CN
Inventors: 李振建; 郭栋; 赵昕萌
Original assignee: Shandong Wintech Technology Co ltd
Current assignee: Shandong Wintech Technology Co ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-10-14
Anticipated expiration: 2032-05-17

Abstract

The utility model relates to a sealing device of nonmetal heat exchange tube and tube sheet, including nonmetal heat exchange tube and tube sheet, the mounting hole of having arranged on the tube sheet, in nonmetal heat exchange tube inserted the mounting hole, be equipped with the sealing washer between nonmetal heat exchange tube and the tube sheet, the sealing washer is hollow H type sealing washer, and the outer end of H type sealing washer is equipped with spacing sealed round platform one, and the inner of H type sealing washer is equipped with spacing sealed round platform two, and the top side of spacing sealed round platform two is smooth transition conical surface one, is equipped with sealed tooth in the hole of H type sealing washer. The utility model discloses the sealing washer is hollow H type structure or Y type structure. The structural style of sealing washer makes sealing washer and tube sheet hole and heat exchange tube closely laminate, the utility model discloses a sealing washer has simple structure, and is sealed effectual, advantages such as long service life have improved equipment leakproofness, have prolonged the life of equipment. The smooth transition conical surface is favorable for preventing medium condensate on the outer side of the pipe from corroding the pipe plate, and the sealing teeth with the tooth-shaped structures are favorable for sealing.

Description

Sealing device for non-metal heat exchange tube and tube plate

Technical Field

The utility model belongs to the technical field of the heat transfer is sealed, concretely relates to sealing device of non-metallic heat exchange tube and tube sheet.

Background

The traditional heat exchange tube and the tube plate are generally made of metal materials, and the traditional heat exchange tube and the tube plate are connected in a metal-metal welding mode. In order to overcome the problem of dew point corrosion of the low-temperature section of the heat exchanger, more and more non-metallic heat exchange elements are developed and utilized. At present, nonmetal-metal is difficult to realize by adopting a welding connection mode, welding and gluing cannot be realized, and only a sealing device can be used for sealing, so the requirement on the sealing performance of a sealing element is higher and higher, but the sealing effect of the existing sealing element is not good, and the sealing requirement of a nonmetal heat exchange tube cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sealing device of nonmetal heat exchange tube and tube sheet, the sealed effect of solving present sealing member is not good, can not satisfy the problem of the sealed demand of nonmetal heat exchange tube.

The utility model relates to a sealing device of nonmetal heat exchange tube and tube sheet, including nonmetal heat exchange tube and tube sheet, the mounting hole of having arranged on the tube sheet, in nonmetal heat exchange tube inserted the mounting hole, be equipped with the sealing washer between nonmetal heat exchange tube and the tube sheet, the sealing washer is hollow H type sealing washer, and the outer end of H type sealing washer is equipped with spacing sealed round platform one, and the inner of H type sealing washer is equipped with spacing sealed round platform two, and the top side of spacing sealed round platform two is smooth transition conical surface one, is equipped with sealed tooth in the hole of H type sealing washer. The sealing ring is positioned between the mounting hole and the heat exchange tube. The medium on one side of the tube plate is arranged in the tube, the medium on the other side of the tube plate is arranged outside the tube, and the media on the two sides are not communicated with each other. The non-metal heat exchange tube is a graphene anti-corrosion alloy tube, and can also be a glass tube, a silicon carbide tube or a graphite tube. The graphene anti-corrosion alloy pipe is a new material, has higher strength than a non-metal heat exchange pipe in the front, is not easy to damage, has lower cost, has a heat exchange coefficient as high as 110W/square meter K, can resist 200 ℃ and has working pressure of 0.6MPa, and is a preferred choice for low-temperature corrosion resistant heat exchange elements. The sealing ring can be made of polytetrafluoroethylene, fluororubber, other rubbers with acid, alkali, corrosion and high temperature resistance, etc.

The Y-shaped sealing ring is characterized in that a sealing ring or a hollow Y-shaped sealing ring is adopted, the outer end of the Y-shaped sealing ring is provided with a third limiting sealing round platform, the inner end of the Y-shaped sealing ring is provided with a fourth limiting sealing round platform, the side surface of the top of the fourth limiting sealing round platform is a second smooth transition conical surface, the outer ring of the Y-shaped sealing ring is in a step shape, two ends of the outer ring of the Y-shaped sealing ring are provided with first two flat straight sections, a first conical connecting slope surface is arranged between the first two flat straight sections, the diameter of the outer end of the outer ring of the Y-shaped sealing ring is larger than that of the inner end of the outer ring, the inner hole of the Y-shaped sealing ring is also in a step shape, two ends of the inner hole of the Y-shaped sealing ring are provided with second two flat straight sections, a second conical connecting slope surface is arranged between the second two flat straight sections, the diameter of the outer end of the inner hole of the Y-shaped sealing ring is smaller than that of the inner end, and the mounting hole is in a step shape matched with the outer wall of the Y-shaped sealing ring.

The inner end of the inner hole of the Y-shaped sealing ring is also provided with sealing teeth. The sealing effect is better.

Arc grooves are formed in inner end inner holes of the Y-shaped sealing ring and the H-shaped sealing ring, and arc bulges matched with the arc grooves are formed in the outer diameter of the outer end of the non-metal heat exchange tube. The sealing effect is increased.

Compared with the prior art, the utility model has the advantages of:

the sealing ring is of a hollow H-shaped structure or a hollow Y-shaped structure. The structural style of sealing washer makes the sealing washer closely laminate with tube sheet hole and heat exchange tube, the utility model discloses a sealing washer has simple structure, and is sealed effectual, and advantages such as long service life have improved equipment leakproofness, have prolonged the life of equipment. The smooth transition conical surface is beneficial to preventing medium condensate on the outer side of the pipe from corroding the pipe plate, and the sealing teeth with the tooth-shaped structures are beneficial to sealing.

Drawings

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

FIG. 2 is a schematic structural view of an H-shaped seal ring;

fig. 3 is a schematic structural diagram of embodiment 2 of the present invention;

FIG. 4 is a schematic structural view of a Y-shaped seal ring;

in the figure: 1. the tube plate comprises a tube plate, 2, a first smooth transition conical surface, 3, a second limiting sealing round platform, 4, an H-shaped sealing ring, 5, a non-metal heat exchange tube, 6, a first limiting sealing round platform, 7, an arc protrusion, 8, an arc groove, 9, a sealing tooth, 10, a second smooth transition conical surface, 11, a fourth limiting sealing round platform, 12, a Y-shaped sealing ring, 13, a first straight section, 14, a first conical connecting slope surface, 15, a third limiting sealing round platform, 16, an elastic pressure groove, 17, a second straight section, 18 and a second conical connecting slope surface.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Embodiment 1, as shown in fig. 1 and 2, the utility model discloses sealing device of nonmetal heat exchange tube and tube sheet, including nonmetal heat exchange tube 5 and tube sheet 1, the mounting hole has arranged on the tube sheet 1, and in nonmetal heat exchange tube 5 inserted the mounting hole, its characterized in that: a sealing ring is arranged between the non-metal heat exchange tube 5 and the tube plate 1, the sealing ring is a hollow H-shaped sealing ring 4, a first limiting sealing round table 6 is arranged at the outer end of the H-shaped sealing ring 4, a second limiting sealing round table 3 is arranged at the inner end of the H-shaped sealing ring 4, the top side surface of the second limiting sealing round table 3 is a first smooth transition conical surface 2, and sealing teeth 9 are arranged in an inner hole of the H-shaped sealing ring 4.

During installation, the H-shaped sealing ring 4 is firstly plugged into the mounting hole, the first limiting sealing round platform 6 is supported at the outer end of the tube plate 1, the second limiting sealing round platform 3 is supported at the inner end of the tube plate 1, then the non-metal heat exchange tube 5 is plugged into the inner hole of the H-shaped sealing ring 4, in the using process, one medium is led into the non-metal heat exchange tube 5, the other medium is led into the inner end of the tube plate 1 and is not communicated with the inner end of the tube plate 1, the sealing teeth 9 are favorable for tight sealing, and the first smooth transition conical surface 2 is favorable for preventing the medium at the outer side of the tube from being condensed and corroding the tube plate. The non-metal heat exchange tubes 5 are graphene anti-corrosion alloy tubes, so that the non-metal heat exchange tubes have higher strength, are not easy to damage, have lower cost, have a heat exchange coefficient as high as 110W/square meter K, can resist temperature of 200 ℃ and have working pressure of 0.6MPa, and are the first choice of low-temperature corrosion resistant heat exchange elements. The sealing ring can be made of polytetrafluoroethylene, fluororubber, other rubbers with acid, alkali, corrosion and high temperature resistance, etc.

In embodiment 2, different from embodiment 1, a seal ring or a hollow Y-shaped seal ring 12 is provided, a third limit sealing circular truncated cone 15 is provided at an outer end of the Y-shaped seal ring 12, a fourth limit sealing circular truncated cone 11 is provided at an inner end of the Y-shaped seal ring 12, a second smooth transition conical surface 10 is provided at a top side of the fourth limit sealing circular truncated cone 11, an outer ring of the Y-shaped seal ring 12 is stepped, two flat and straight sections 13 are provided at two ends of the outer ring of the Y-shaped seal ring 12, a first tapered connection slope 14 is provided between the two flat and straight sections 13, a diameter of the outer end of the outer ring of the Y-shaped seal ring 12 is larger than that of the inner end, an elastic pressure groove 16 is provided at an outer end surface of the Y-shaped seal ring 12, an inner hole of the Y-shaped seal ring 12 is also stepped, two flat and straight sections 17 are provided at two ends of the inner hole of the Y-shaped seal ring 12, a second tapered connection slope 18 is provided between the two flat and the outer end of the inner hole of the Y-shaped seal ring 12 is smaller than that of the inner end.

The inner end of the inner hole of the Y-shaped sealing ring 12 is also provided with sealing teeth 9.

During installation, the Y-shaped sealing ring 12 is firstly plugged into the installation hole, the third limiting sealing round platform 15 is supported at the outer end of the tube plate 1, the fourth limiting sealing round platform 11 is supported at the inner end of the tube plate 1, then the non-metal heat exchange tube 5 is plugged into the inner hole of the Y-shaped sealing ring 12, the outer end of the inner hole is extruded to compress the elastic pressing groove 16 to deform and only stick to the outer wall of the non-metal heat exchange tube 5, one medium is led into the non-metal heat exchange tube 5 in the using process, the other medium is led into the inner end of the tube plate 1 and is not communicated with the inner end of the tube plate 1, and the smooth transition conical surface two 10 is beneficial to preventing the medium at the outer side of the tube from being condensed and corroding the tube plate. The non-metal heat exchange tube 5 is made of graphene anti-corrosion alloy tubes, so that the non-metal heat exchange tube has higher strength, is not easy to damage, has lower cost, has a heat exchange coefficient as high as 110W/square meter K, can resist 200 ℃ and has working pressure of 0.6MPa, and is the first choice of low-temperature corrosion resistant heat exchange elements. The sealing ring can be made of polytetrafluoroethylene, fluororubber, other rubbers with acid, alkali, corrosion and high temperature resistance, etc.

Embodiment 3, on the basis of embodiment 1 or embodiment 2, the inner end inner holes of the Y-shaped sealing ring 12 and the H-shaped sealing ring 4 are provided with arc-shaped grooves 8, and the outer end outer diameter of the non-metal heat exchange tube 5 is provided with arc-shaped protrusions 7 matched with the arc-shaped grooves 8.

To sum up, the utility model discloses the sealing washer is hollow H type structure or Y type structure. The structural style of sealing washer makes sealing washer and tube sheet hole and heat exchange tube closely laminate, the utility model discloses a sealing washer has simple structure, and is sealed effectual, advantages such as long service life have improved equipment leakproofness, have prolonged the life of equipment. The smooth transition conical surface is beneficial to preventing medium condensate on the outer side of the pipe from corroding the pipe plate, and the sealing teeth with the tooth-shaped structures are beneficial to sealing.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

In the description of the present invention, the terms "inside", "outside", "longitudinal", "transverse", "up", "down", "top", "bottom" and other indicated directions or positional relationships are the directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention, but do not require that the present invention must be constructed and operated in a specific direction, and therefore, should not be construed as limiting the present invention.

Claims

1. The utility model provides a sealing device of nonmetal heat exchange tube and tube sheet, includes nonmetal heat exchange tube (5) and tube sheet (1), the mounting hole of having arranged on tube sheet (1), in nonmetal heat exchange tube (5) inserted the mounting hole, its characterized in that: a sealing ring is arranged between the non-metal heat exchange tube (5) and the tube plate (1), the sealing ring is a hollow H-shaped sealing ring (4), a first limiting sealing round table (6) is arranged at the outer end of the H-shaped sealing ring (4), a second limiting sealing round table (3) is arranged at the inner end of the H-shaped sealing ring (4), the top side face of the second limiting sealing round table (3) is a first smooth transition conical surface (2), and sealing teeth (9) are arranged in an inner hole of the H-shaped sealing ring (4).

2. The non-metallic heat exchange tube and tube sheet sealing arrangement as recited in claim 1, wherein: the sealing ring or the hollow Y-shaped sealing ring (12) is provided, the outer end of the Y-shaped sealing ring (12) is provided with a third limiting sealing round table (15), the inner end of the Y-shaped sealing ring (12) is provided with a fourth limiting sealing round table (11), the side surface of the top of the fourth limiting sealing round table (11) is provided with a second smooth transition conical surface (10), the outer ring of the Y-shaped sealing ring (12) is in a step shape, the two ends of the outer ring of the Y-shaped sealing ring (12) are provided with first two straight sections (13), a first conical connecting slope surface (14) is arranged between the first two straight sections (13), the diameter of the outer end of the outer ring of the Y-shaped sealing ring (12) is larger than that of the inner end, the outer end surface of the Y-shaped sealing ring (12) is provided with an elastic pressure groove (16), the inner hole of the Y-shaped sealing ring (12) is also in a step shape, the two outer ends of the inner hole of the Y-shaped sealing ring (12) are provided with second two straight sections (17), a second conical connecting slope surface (18) is arranged between the second two straight sections (17), and the diameter of the inner hole of the Y-shaped sealing ring (12) is smaller than that of the inner end.

3. The non-metallic heat exchange tube and tube sheet sealing arrangement as recited in claim 2, wherein: the inner end of the inner hole of the Y-shaped sealing ring (12) is also provided with sealing teeth (9).

4. A non-metallic heat exchange tube to tube sheet seal according to claim 3, wherein: arc-shaped grooves (8) are formed in inner end inner holes of the Y-shaped sealing ring (12) and the H-shaped sealing ring (4), and arc-shaped protrusions (7) matched with the arc-shaped grooves (8) are arranged on the outer diameter of the outer end of the non-metal heat exchange tube (5).