An internally threaded reinforced pipe

Abstract

The utility model relates to a kind of inner thread reinforced tube, belong to heat exchange tube technical field, solve the single problem of existing ordinary inner thread pipe inner tooth structure, turbulent intensity is insufficient, heat exchange rate is poor, it includes pipe body and inner thread rib, the pipe body includes inner surface and outer surface;The inner thread rib is formed in the inner surface of the pipe body in spiral form, the radial height between the inner thread rib and / or the outer edge surface on the inner thread rib to the inner surface of the pipe body is uniformly set in zigzag along spiral trend, adjacent the inner thread rib and the inner surface of the pipe body are cooperated to form spiral channel, adjacent two the spiral channel intercommunication;It has the effect of being beneficial to enhancing the turbulent degree of fluid in pipe, thereby reaching the effect of improving heat exchange efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchange tube technology, specifically relating to an internally threaded reinforced tube. Background Technology

[0002] The existing patent publication number "CN112815763A" discloses an internally reinforced heat exchange tube, which includes: a tube body having an inner surface and an outer surface; a spiral rib formed in a spiral shape on the inner surface, wherein interconnected channels are formed between the spiral ribs, and the top of the spiral rib is bent to one side to form a bent structure; and grooves formed at intervals on the top of the spiral ribs, wherein the grooves are connected to the channels.

[0003] The above description has the following problems: the threaded ribs in the internally reinforced heat exchange tube of this structure are only formed in a spiral form on the inner surface of the tube body. The structure is simple, the turbulence intensity is insufficient during operation, and the heat exchange rate is poor. Utility Model Content

[0004] The purpose of this invention is to provide an internally threaded reinforced tube that solves the problems of the existing ordinary internally threaded tubes having a simple internal tooth structure, insufficient turbulence strength, and poor heat exchange rate.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This utility model provides an internally threaded reinforced tube, which includes:

[0007] The tube body includes an inner surface and an outer surface;

[0008] The internal thread rib is formed in a spiral shape on the inner surface of the tube body. The internal thread rib has a wavy shape along the spiral direction and / or the radial height between the radially upper outer edge of the internal thread rib and the inner surface of the tube body has a wavy shape along the spiral direction. Adjacent internal thread ribs cooperate with the inner surface of the tube body to form a spiral channel, and two adjacent spiral channels are interconnected.

[0009] Furthermore, the spacing between the two adjacent internal thread ribs, which are arranged in a zigzag pattern along the spiral direction and whose radial height from the upper outer edge surface to the inner surface of the tube is also zigzag, and the spiral groove formed by the inner surface of the tube is the same.

[0010] Furthermore, the spacing between two adjacent spiral channels formed by the two internally threaded ribs arranged in a zigzag pattern along the spiral direction and the inner surface of the tube body is the same.

[0011] Furthermore, the distance between the two internal thread ribs, whose radial height from the upper outer edge surface to the inner surface of the tube body is zigzag along the helical direction, and the helical groove formed on the inner surface of the tube body is the same.

[0012] Furthermore, the axial width of the internal thread rib gradually decreases from the inside to the outside along the radial direction.

[0013] Furthermore, the radially upper outer edge of the internal thread rib is planar.

[0014] Furthermore, the internal thread rib is integrally formed with the tube body.

[0015] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0016] This utility model discloses an internally threaded reinforced tube, which is beneficial to increasing the heat exchange surface area inside the tube. The spiral channel formed by the cooperation of two adjacent internally threaded ribs with the inner surface of the tube is also arranged in a tortuous manner along the spiral direction. At the same time, the depth of the spiral channel along the spiral direction varies. This spiral channel is different from the conventional single spiral structure. The complex spiral channel structure is beneficial to enhance the turbulence of the fluid inside the tube, thereby achieving the purpose of improving the heat exchange efficiency. Attached Figure Description

[0017] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0018] Figure 1 This is a partially enlarged view of the structure of the preferred embodiment 1 of this utility model;

[0019] Figure 2 This is a top view of the structure of Embodiment 2 of this utility model;

[0020] Figure 3 This is a partial enlarged view of the structure of Embodiment 3 of this utility model.

[0021] The reference numerals in the attached figures are explained as follows:

[0022] 1. Pipe body; 2. Internal thread rib, 3. Spiral channel. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] Example 1

[0027] refer to Figure 1 This example provides an internally threaded reinforced tube, comprising a tube body 1 and internally threaded ribs 2. The tube body 1 includes an inner surface and an outer surface. The internally threaded ribs 2 are formed in a helical form on the inner surface of the tube body 1, and are integrally formed with the inner surface of the tube body 1. The internally threaded ribs 2 exhibit a wavy shape along the helical direction, and the radial height between the radially upper outer edge of the internally threaded ribs 2 and the inner surface of the tube body 1 also exhibits a wavy shape along the helical direction. Adjacent internally threaded ribs 2 of this structure mate with the inner surface of the tube body 1 to form helical channels 3. Two adjacent helical channels 3 are interconnected, and the spacing between two adjacent helical channels 3 is the same.

[0028] Among them, the axial width of the internal thread rib 2 gradually decreases from the inside to the outside along the radial direction, and the radial upper outer edge surface of the internal thread rib 2 is set as a plane.

[0029] refer to Figure 1 The beneficial effects of the internally threaded reinforced tube in this example are:

[0030] (1) By integrating the internal thread rib 2 with the tube body 1 into a single structure, there is no contact thermal resistance;

[0031] (2) The internal threaded ribs 2 of this structure are set in a spiral manner on the inner surface of the tube body 1. On the one hand, this is conducive to increasing the heat exchange surface area inside the tube. On the other hand, the spiral channel 3 formed by the cooperation of two adjacent internal threaded ribs 2 and the inner surface of the tube body 1 also changes in a wave shape along the spiral direction. At the same time, the depth of the spiral channel 3 along the spiral direction is different. This spiral channel 3 is different from the conventional single spiral structure. The spiral channel 3 has a complex structure, which is beneficial to enhance the turbulence of the fluid inside the tube, thereby achieving the purpose of improving the heat exchange efficiency.

[0032] Example 2

[0033] This embodiment is basically the same as Embodiment 1, except that:

[0034] refer to Figure 2 The wavy shape of the internal thread rib 2 along the spiral direction can also help increase the heat exchange surface area inside the tube; the spiral channel 3 formed by the cooperation of two adjacent internal thread ribs 2 with the inner surface of the tube also changes in a wavy shape along the spiral direction, which can also improve the heat exchange efficiency.

[0035] Example 3

[0036] This embodiment is basically the same as that in Embodiment 1, except that:

[0037] refer to Figure 3 Only the radial height between the radially upper outer edge of the internal thread rib 2 and the inner surface of the tube body 1 varies in a wavy shape along the helical direction. The depth of the helical channel 3 formed by the mating of two adjacent internal thread ribs 2 with the inner surface of the tube body 1 varies in a wavy shape along the helical direction, which also helps to increase the heat exchange surface area inside the tube and achieve the purpose of improving heat exchange efficiency.

[0038] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A threaded reinforced tube, comprising: The tube body (1) includes an inner surface and an outer surface; Internal thread rib (2), the internal thread rib (2) is formed in a spiral form on the inner surface of the tube body (1), the internal thread rib (2) is wavy along the spiral direction and / or the radial height between the radial outer edge of the internal thread rib (2) and the inner surface of the tube body (1) is wavy along the spiral direction, adjacent internal thread ribs (2) cooperate with the inner surface of the tube body (1) to form a spiral channel (3), and two adjacent spiral channels (3) are interconnected.

2. The internally threaded reinforced tube according to claim 1, characterized in that, The spacing between the two adjacent internal thread ribs (2) arranged in a zigzag pattern along the spiral direction and whose radial height between the upper outer edge surface and the inner surface of the tube body (1) is also zigzag, and the spiral groove (3) formed by the inner surface of the tube body (1) is the same.

3. The internally threaded reinforced tube according to claim 1, characterized in that, The spacing between two adjacent spiral channels (3) formed by the two internally threaded ribs (2) arranged in a zigzag pattern along the spiral direction and the inner surface of the tube body (1) is the same.

4. The internally threaded reinforced tube according to claim 1, characterized in that, The distance between the two internal threaded ribs (2) arranged in a zigzag pattern along the spiral direction and the spiral channel (3) formed by the inner surface of the tube body (1) is the same.

5. The internally threaded reinforced tube according to any one of claims 2-4, characterized in that, The axial width of the internal thread rib (2) gradually decreases from the inside to the outside along the radial direction.

6. The internally threaded reinforced tube according to claim 5, characterized in that, The radial upper outer edge of the internal thread rib (2) is set in a plane.

7. The internally threaded reinforced tube according to claim 1 or 6, characterized in that, The internal thread rib (2) is integrally formed with the tube body (1).

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