Efficient heat exchange tube with discharge groove

Abstract

The utility model provides an efficient heat exchange tube with discharge grooves, which comprises a heat exchange tube body, a spiral fin is arranged on the surface of the heat exchange tube body, a group of longitudinal grooves are formed in the fin, a group of inclined grooves are further formed in the fin, and the inclined grooves are positioned between two adjacent longitudinal grooves and are communicated with the two adjacent longitudinal grooves. According to the utility model, the formation of liquid drops is accelerated, the condensation efficiency is improved, the heat exchange area of the heat exchange tube is increased, and the heat exchange performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchange tube technical field especially a kind of high-efficiency heat exchange tube with relief groove. BACKGROUND

[0002] Heat exchange tube is one of the elements of heat exchanger, placed in cylinder, for the exchange of heat between two media, with very high thermal conductivity and good isothermality;In addition to light tube, heat exchanger can also use various kinds of enhanced heat transfer tube, such as finned tube, threaded tube, spiral groove tube etc., finned tube is to improve heat exchange efficiency, usually on the surface of heat exchange tube by setting fin, increase the outer surface area (or inner surface area) of heat exchange tube, so as to improve the purpose of heat exchange efficiency;

[0003] But only the way of setting fin on the surface of heat exchange tube, cannot maximize the formation of droplet, and make droplet quickly drop from the outer surface of heat exchange tube, lead to the heat exchange efficiency of heat exchange tube is improved smaller. INNOVATION CONTENT

[0004] The utility model discloses a kind of high-efficiency heat exchange tube with relief groove, solve only the way of setting fin on the surface of heat exchange tube, cannot maximize the formation of droplet, and make droplet quickly drop, lead to the heat exchange efficiency of heat exchange tube is improved smaller Problem.

[0005] To solve the above technical problem, the utility model in particular uses the following technical scheme:

[0006] A kind of high-efficiency heat exchange tube with relief groove, including heat exchange tube body, the surface of heat exchange tube body is equipped with the fin of spiral shape, a group of longitudinal grooves are set on fin, a group of inclined grooves are also set on fin, inclined groove is located between two adjacent longitudinal grooves and is communicated with two adjacent longitudinal grooves.

[0007] Compared with the prior art, the utility model has the following beneficial effects:

[0008] The setting of helical fin on heat exchange tube body, increase heat exchange area at the same time, make the surface of heat exchange tube body form spiral groove, can make condensate film under the action of surface tension, quickly contract into spiral groove, and quickly flow downward along spiral groove, and drop downward, so that heat exchange tube body surface can be in time with the gas to be condensed sustained contact heat exchange and condenses, improve the effect of condensation heat transfer;And the setting of longitudinal groove and inclined groove, can improve the heat transfer area of heat exchange tube body, while inclined groove, can gather the droplet formed into longitudinal groove, accelerate the formation of droplet, make droplet quickly gather condensation and drop in the groove on the surface of heat exchange tube body, improve condensation efficiency;The utility model accelerates the formation of droplet, improves condensation efficiency, also increases the heat exchange area of heat exchange tube, improves heat exchange performance. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model from a frontal sectional view;

[0010] Figure 2 for Figure 1 A magnified structural diagram at point A.

[0011] In the diagram: 1. Heat exchange tube body; 2. Fins; 3. Longitudinal groove; 4. Inclined groove; 5. Cover; 6. Protrusion. Detailed Implementation

[0012] The specific content of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0013] like Figure 1 and Figure 2 As shown, this utility model provides a high-efficiency heat exchange tube with a venting groove, including a heat exchange tube body 1. The surface of the heat exchange tube body 1 is provided with spiral fins 2. A set of longitudinal grooves 3 are opened on the fins 2. A set of inclined grooves 4 are also opened on the fins 2. The inclined grooves 4 are located between two adjacent longitudinal grooves 3 and are connected to the two adjacent longitudinal grooves 3.

[0014] like Figure 1 and Figure 2 As shown, spiral grooves are formed on the heat exchange tube body 1 to create spiral fins 2. This method of forming fins 2 by creating spiral grooves on the heat exchange tube body 1 facilitates the processing of the heat exchange tube body 1 and improves the efficiency of fin production.

[0015] like Figure 1 As shown, both ends of the heat exchange tube body 1 are fitted with covers 5. After the heat exchange tube body 1 is fixed on the tube sheet inside the heat exchanger, the covers 5 can be fitted onto the heat exchange tube body 1 to block the weld between the heat exchange tube body 1 and the tube sheet. Then the covers 5 are welded to the tube sheet, which protects the weld between the heat exchange tube body 1 and the tube sheet and prevents the weld from being corroded or damaged by prolonged contact with corrosive media.

[0016] like Figure 1 As shown, a protrusion 6 is fixed on the inner wall of the casing 5, and a recessed groove adapted to the protrusion 6 is formed on the inner wall of the heat exchange tube body 1. The recessed groove on the heat exchange tube body 1 is formed at the end of the heat exchange tube body 1, so that the operator can accurately fit the casing 5 onto the heat exchange tube body 1, increasing the stability of the casing 5 after it is fitted onto the heat exchange tube body 1, so that the operator can then weld and fix the casing 5 and the heat exchange tube body 1; the casing 5 has at least two protrusions 6, so as to further increase the stability of the casing 5 fitted onto the heat exchange tube body 1.

[0017] In use, the spiral fins 2 provided on the heat exchange pipe body 1 form spiral grooves on the surface of the heat exchange pipe body 1, so that the condensate film is quickly contracted into the spiral grooves under the action of surface tension, quickly flows downward along the spiral grooves, and drips downward, so that the surface of the heat exchange pipe body 1 can be in contact with the gas to be condensed in time for heat exchange and condensation, and the condensation heat transfer effect is improved; and the longitudinal grooves 3 and the inclined grooves 4 are provided, so that the heat transfer area of the heat exchange pipe body 1 is increased, the formation of liquid drops is accelerated, the liquid drops are quickly collected and condensed in the spiral grooves on the surface of the heat exchange pipe body, and the condensation efficiency is improved; and the depth of the longitudinal grooves 3 and the inclined grooves 4 is 1 / 5 or 1 / 10 of the height of the fins 2, the two adjacent longitudinal grooves 3 and the inclined grooves 4 located between the two adjacent longitudinal grooves 3 are communicated, and are arranged in a Z shape; a group of longitudinal grooves 3 and a group of inclined grooves 4 are sequentially distributed along the spiral direction of the fins 2; at the same time, the depth of the inclined grooves 4 is less than the depth of the longitudinal grooves 3, so that the liquid drops in the inclined grooves 4 are quickly collected in the longitudinal grooves 3, and then collected in the spiral grooves on the heat exchange pipe body 1 through the longitudinal grooves 3, and then dripped downward.

[0018] Finally, it should be pointed out that the above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A high-efficiency heat exchange tube with a leakage groove, comprising a heat exchange tube body (1), characterized in that: The surface of the heat exchange pipe body (1) is provided with spiral fins (2), a group of longitudinal grooves (3) are formed on the fins (2), and a group of inclined grooves (4) are also formed on the fins (2), the inclined grooves (4) are located between two adjacent longitudinal grooves (3) and communicate with the two adjacent longitudinal grooves (3).

2. A high efficiency heat transfer tube with a bleed slot according to claim 1, characterized in that: The heat exchange pipe body (1) is provided with spiral grooves to form spiral fins (2).

3. A high efficiency heat transfer tube with a bleed slot according to claim 1, characterized in that: The heat exchange pipe body (1) is provided with spiral grooves to form spiral fins (2).

4. A high efficiency heat transfer tube with a drain groove according to claim 3, characterized in that: The inner wall of the cover shell (5) is fixed with a protruding block (6), and the inner wall of the heat exchange pipe body (1) is provided with a recessed groove matched with the protruding block (6).

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