CN220793993U - Connection structure of heat exchange tube - Google Patents

Abstract

The utility model discloses a connecting structure of a heat exchange tube, which comprises the heat exchange tube positioned in a cylinder body, wherein a lower seal head is arranged at the bottom of the cylinder body, a sleeve tube penetrating through the lower seal head is arranged on the lower seal head, a hemispherical seal head is arranged at one end of the sleeve tube positioned outside the lower seal head, the heat exchange tube penetrates through the sleeve tube and the hemispherical seal head and extends out of the hemispherical seal head, and the outer wall of the heat exchange tube is connected with the hemispherical seal head. When the heat exchange tube is in operation, the phenomenon of heat expansion and cold contraction can be generated in the heat exchange tube in an alternating manner, the stress value of the joint of the heat exchange tube and the hemispherical head can be effectively reduced through the deformation of the hemispherical head, and the fatigue life of the joint is prolonged, so that the service life of the recovered hydrogen adsorption column is prolonged, leakage caused by cracking is avoided, the structure of the heat exchange tube is simple and compact, the heat exchange tube can be used for other heat exchanger equipment, and the heat exchange tube has high practicability.

Description

Connection structure of heat exchange tube

Technical Field

The utility model relates to the technical field of heat exchange equipment, in particular to a connecting structure of a heat exchange tube.

Background

In the existing polycrystalline silicon tail gas recovery procedure, the hydrogen in the polycrystalline silicon tail gas is subjected to further purification treatment by using a recovered hydrogen adsorption column, a heat exchange tube inside the recovered hydrogen adsorption column penetrates through a lower end enclosure of the adsorption column and is directly welded with a lower end enclosure of the adsorption column, when the polycrystalline silicon tail gas recovery procedure works, the phenomenon of thermal expansion and cold contraction can be generated in the heat exchange tube in a cold-hot mode, the lower end enclosure of the adsorption column does not have the state of the thermal expansion and cold contraction, and a welding part between the heat exchange tube and the lower end enclosure of the adsorption column is easy to crack, so that leakage is caused, and the service life of the recovered hydrogen adsorption column is reduced.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a connecting structure of a heat exchange tube.

The utility model adopts the following technical scheme to realize the aim:

the utility model provides a connection structure of heat exchange tube, includes the heat exchange tube that is located the barrel, the low head is installed to the barrel bottom, install the telescopic pipe that runs through the low head on the low head, the hemisphere head is installed to the one end that telescopic pipe is located the low head outside, the heat exchange tube runs through telescopic pipe and hemisphere head and extends hemisphere head, the outer wall and the hemisphere head of heat exchange tube are connected.

Further, the hemispherical head has a flexible structure.

Further, the wall thickness of the heat exchange tube is similar to that of the hemispherical head.

Further, a gap is arranged between the sleeve pipe and the heat exchange pipe.

Further, the inner diameters of the two ends of the sleeve pipe are larger than the inner diameter of the middle part, and the wall thickness of the joint of the sleeve pipe and the hemispherical head is similar to that of the hemispherical head.

Further, the heat exchange tubes and the sleeve tubes are provided with a plurality of heat exchange tubes, and the heat exchange tubes and the sleeve tubes are in one-to-one correspondence.

Compared with the prior art, the utility model provides a connecting structure of a heat exchange tube, which has the following beneficial effects:

the utility model has the advantages that the hemispherical head has a flexible structure, so that the hemispherical head can deform along with the magnitude of external stress, and the stress value is reduced through deformation, so that the cracking of materials caused by overlarge stress can be avoided.

Drawings

FIG. 1 is a schematic cross-sectional view of the present utility model;

fig. 2 is an enlarged schematic view of the structure at a in fig. 1.

The mark in the figure is 1, a cylinder; 2. a lower end enclosure; 3. a heat exchange tube; 4. a quill tube; 5. hemispherical closure head; 6. a gap.

Detailed Description

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

standard parts used in the utility model can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of all parts adopt conventional means such as mature bolts, rivets and welding in the prior art, the machinery, the parts and the equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that the details are not described.

It should be noted that the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The embodiment of the utility model provides a connecting structure of a heat exchange tube, which is shown in figures 1 and 2 and comprises a heat exchange tube 3 positioned in a cylinder body 1, wherein a lower end socket 2 is arranged at the bottom of the cylinder body 1, a sleeve tube 4 penetrating through the lower end socket 2 is arranged on the lower end socket 2, a hemispherical end socket 5 is arranged at one end of the sleeve tube 4 positioned outside the lower end socket 2, the heat exchange tube 3 penetrates through the sleeve tube 4 and the hemispherical end socket 5 and extends out of the hemispherical end socket 5, and the outer wall of the heat exchange tube 3 is connected with the hemispherical end socket 5.

Specifically, the cylinder 1 is a cylinder 1 of a recovered hydrogen adsorption column, the lower seal head 2 is a lower seal head 2 of the recovered hydrogen adsorption column, and the cylinder 1 is connected with the lower seal head 2 through welding; the sleeve pipe 4 is connected with the lower seal head 2 through welding; the bottom of the sleeve pipe 4 is provided with a hemispherical head 5, and the sleeve pipe 4 is connected with the hemispherical head 5 through welding; the outer wall of the heat exchange tube 3 is connected with the hemispherical head 5 through welding, so that the tightness is improved, and leakage is prevented;

wherein, the material of barrel 1, low head 2 adopts Q345R (steel sheet), the material of hemisphere head 5 adopts Q345R (steel sheet), the material of heat exchange tube 3 adopts Q345D (low alloy steel).

Referring to fig. 1 and 2, in the present embodiment, the hemispherical head 5 has a flexible structure.

Specifically, the flexible structure is the property that an object is deformed under force, and cannot be restored after the acting force is lost, and is commonly used in mineralogy and metalology (concurrent rigidity, tensile strength and the like in the metalology); the hemispherical head 5 has a flexible structure, so that the hemispherical head 5 can deform along with the magnitude of external stress, and the stress value is reduced through deformation, thereby avoiding cracking of the material caused by overlarge stress.

Referring to fig. 1 and 2, in this embodiment, the wall thickness of the heat exchange tube 3 is similar to that of the hemispherical head 5.

By arranging the heat exchange tube 3 with the wall thickness similar to that of the hemispherical head 5, the strength is similar when the wall thickness is similar, and the load which can be born is similar, so that the deformation of the heat exchange tube 3 and the hemispherical head 5 can be similar, and the connection stress value between the heat exchange tube 3 and the hemispherical head 5 is reduced; preferably, the wall thickness of the heat exchange tube 3 is the same as the wall thickness of the hemispherical head 5.

Referring to fig. 1 and 2, in the present embodiment, a gap 6 is provided between the sleeve tube 4 and the heat exchange tube 3.

Through the arrangement of the gaps 6, excessive extrusion of the sleeve pipe 4 is avoided when the heat exchange pipe 3 expands with heat and contracts with cold, and the service lives of the heat exchange pipe 3 and the sleeve pipe 4 are shortened.

Referring to fig. 1 and 2, in this embodiment, the inner diameter of the two ends of the sleeve tube 4 is larger than the inner diameter of the middle part, and the wall thickness of the joint of the sleeve tube 4 and the hemispherical head 5 is similar to that of the hemispherical head 5.

Specifically, by setting the inner diameter of the two ends of the sleeve tube 4 to be larger than the inner diameter of the middle part, the heat exchange tube 3 is convenient to pass through the sleeve tube 4, and the inner diameter of the sleeve tube 4 is larger than the diameter of the heat exchange tube 3; the inner diameters of the two ends of the sleeve pipe 4 are arranged in a conical shape; by setting the wall thickness of the joint of the sleeve pipe 4 and the hemispherical head 5 to be similar to the wall thickness of the hemispherical head 5, the hemispherical head 5 is conveniently installed at the bottom of the sleeve pipe 4, the diameter of the sleeve pipe 4 is the same as that of the hemispherical head 5, and preferably, the wall thickness of the joint of the sleeve pipe 4 and the hemispherical head 5 is the same as that of the hemispherical head 5.

Referring to fig. 1 and 2, in the present embodiment, a plurality of heat exchange tubes 3 and sleeve tubes 4 are provided, and the heat exchange tubes 3 are in one-to-one correspondence with the sleeve tubes 4.

Specifically, the number of the heat exchange tubes 3 is identical to that of the sleeve tubes 4, and the arrangement is carried out according to practical conditions.

In summary, the hemispherical head 5 has a flexible structure, so that the hemispherical head 5 can deform along with the magnitude of external stress, and the stress value is reduced by deformation, so that the cracking of materials due to overlarge stress can be avoided.

What is not described in detail in this specification is prior art known to those skilled in the art.

The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model. It will be apparent that the described embodiments are merely some, but not all, embodiments of the utility model. Based on these embodiments, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the utility model. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art may still combine, add or delete features of the embodiments of the present utility model or make other adjustments according to circumstances without any conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present utility model, which also falls within the scope of the present utility model.

Claims (6)

1. The utility model provides a connection structure of heat exchange tube, includes heat exchange tube (3) that are located barrel (1), low head (2) are installed to barrel (1) bottom, a serial communication port, install sleeve pipe (4) that run through low head (2) on low head (2), hemispherical head (5) are installed to one end that sleeve pipe (4) are located low head (2) outside, heat exchange tube (3) run through sleeve pipe (4) and hemispherical head (5) and extend hemispherical head (5), the outer wall and the hemispherical head (5) of heat exchange tube (3) are connected.

2. A connection structure of a heat exchange tube according to claim 1, characterized in that the hemispherical head (5) has a flexible structure.

3. A connection structure of heat exchange tubes according to claim 1, characterized in that the wall thickness of the heat exchange tube (3) is similar to the wall thickness of the hemispherical head (5).

4. A connection structure of heat exchange tubes according to claim 1, characterized in that a gap (6) is provided between the sleeve tube (4) and the heat exchange tube (3).

5. A connection structure of heat exchange tubes according to claim 1, wherein the inner diameter of both ends of the sleeve tube (4) is larger than the inner diameter of the middle part, and the wall thickness of the joint of the sleeve tube (4) and the hemispherical head (5) is similar to the wall thickness of the hemispherical head (5).

6. The connection structure of heat exchange tubes according to claim 1, wherein the heat exchange tubes (3) and the sleeve tubes (4) are provided in a plurality, and the heat exchange tubes (3) and the sleeve tubes (4) are in one-to-one correspondence.