A crystallizer copper tube with cooling grooves

Abstract

This utility model discloses a crystallizer copper tube with cooling grooves, belonging to the technical field of crystallizer copper tubes. It includes a copper tube body, a sealing mechanism attached to the outer surface of the copper tube body, and a cooling mechanism formed on the outer surface of the copper tube body. The cooling mechanism includes a main cooling groove and a secondary cooling groove formed on the outer surface of the copper tube body. The sealing mechanism includes an upper connecting cover attached to the upper surface of the copper tube body, and a lower connecting cover attached to the lower surface of the copper tube body. Sealing rings are attached to the inner walls of both the lower and upper connecting covers. This crystallizer copper tube with cooling grooves extends the medium contact time through a spiral path, enhances turbulence through a trapezoidal cross-section, and improves heat exchange efficiency. The axial secondary grooves reduce flow resistance and connect with the main grooves to form staggered flow paths. Combined with a six-group evenly distributed design, it balances the cooling intensity of each area and avoids localized overheating.

Description

Technical Field

[0001] This utility model relates to the field of crystallizer copper tube technology, specifically a crystallizer copper tube with cooling grooves. Background Technology

[0002] Crystallizer copper tubes are components of casting machines. Traditional crystallizer copper tubes generally consist of a copper tube and a cooling jacket. The cooling jacket is fitted onto the outside of the copper tube, and a cooling channel is provided between the cooling jacket and the copper tube. Coolant flows through the cooling channel to cool the copper tube. The cooling effect and cooling rate have a significant impact on the forming quality of the continuously cast billet and the service life of the copper tube.

[0003] Chinese utility model patent CN221133986U discloses a crystallizer copper tube, including a copper tube body, a cooling water jacket fitted on the outer side of the copper tube body, end caps connected to both ends of the copper tube body and the cooling water jacket, a powder storage tank formed on the lower inner wall of the copper tube body, and a guide plate provided in the gap formed between the inner wall of the cooling water jacket and the outer wall of the copper tube body. The guide plate, the cooling water jacket, and the copper tube body form a cooling channel spirally surrounding the outer wall of the copper tube body from top to bottom. One end of the cooling channel is connected to an inlet pipe, and the other end is connected to an outlet pipe. The main purpose of this utility model is to provide a crystallizer copper tube that can improve the cooling effect, extend the service life of the copper tube body, has a reliable and stable structure, and is remarkably efficient.

[0004] The outer walls of existing crystallizer copper tubes are mostly smooth surfaces, forming a closed cooling space with the cooling jacket. Heat exchange is achieved by introducing refrigerant into this space. The contact between the smooth outer surface of the copper tube and the refrigerant is singular, and heat exchange can only be completed through planar convection. It cannot effectively disturb the refrigerant, which increases the boundary layer thermal resistance. A large amount of heat accumulates on the outer wall of the copper tube but is difficult to transfer to the refrigerant, resulting in a low cooling rate.

[0005] To address this problem, the present invention provides a crystallizer copper tube with cooling grooves. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a crystallizer copper tube with cooling grooves, which solves the aforementioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a crystallizer copper tube with cooling grooves, comprising a copper tube body, a sealing mechanism attached to the outer surface of the copper tube body, and a cooling mechanism provided on the outer surface of the copper tube body. The cooling mechanism includes a main cooling groove and a secondary cooling groove provided on the outer surface of the copper tube body. The sealing mechanism includes an upper connecting cover attached to the upper surface of the copper tube body, and a lower connecting cover attached to the lower surface of the copper tube body. Sealing rings are attached to the inner walls of both the lower connecting cover and the upper connecting cover.

[0008] Furthermore, the main cooling groove has a trapezoidal cross-section, with the upper base being wider than the lower base, and the main cooling groove is spirally wrapped around the outer surface of the copper tube body.

[0009] By adopting the above technical solution, the trapezoidal cross section can guide the cooling medium to form a gradual flow velocity during flow, enhance the turbulence effect, improve the heat exchange efficiency, and the spiral circling can make the cooling medium form a continuous coverage along the surface of the copper tube body, avoiding local cooling blind spots.

[0010] Furthermore, the secondary cooling tank has a semi-circular cross-section, is arranged along the axial direction of the copper tube body, and is connected to the main cooling tank.

[0011] By adopting the above technical solution, the flow resistance of the cooling medium is reduced by the semi-circular cross-section, the flow velocity is increased, and the axially arranged secondary cooling tank is connected to the spiral main cooling tank to form an interlaced flow path, which can balance the cooling intensity of different areas and avoid local overheating.

[0012] Furthermore, the secondary cooling tanks are arranged in six groups, and the secondary cooling tanks are evenly distributed on the outer surface of the copper tube body.

[0013] By adopting the above technical solution, the cooling medium can form a symmetrical cooling layout around the copper tube body through six evenly distributed auxiliary cooling tanks, which facilitates the replenishment of liquid to the main cooling tank.

[0014] Furthermore, water guide grooves are provided on the inner sides of both the lower connecting cover and the upper connecting cover, and connecting pipes are fixedly connected to the outer surfaces of both the lower connecting cover and the upper connecting cover.

[0015] By adopting the above technical solution, the cooling medium can be guided to enter or flow out of the cooling tank evenly through the water guide channel, avoiding local flow concentration; the connecting pipes facilitate docking with the external cooling system and ensure a stable supply of cooling medium.

[0016] Furthermore, the outer surfaces of the lower connecting cover and the upper connecting cover are threaded with sealing cylinders, the copper tube body is disposed inside the sealing cylinder, the outer surface of the copper tube body is fixedly connected with a limiting ring, and the inner surfaces of the lower connecting cover and the upper connecting cover are provided with limiting grooves to cooperate with the outer surface of the limiting ring. The limiting ring is slidably connected to the limiting groove, and the outer surface of the limiting ring is fixedly connected with a sealing gasket.

[0017] By adopting the above technical solution, the overall sealing performance is further enhanced by the sealing cylinder and the threaded connection, forming double protection. The limiting ring and the limiting groove can accurately position the relative position of the copper tube body and the connecting cover, avoiding assembly deviation from affecting the seal. The sealing gasket further fills the gap to prevent the cooling medium from leaking.

[0018] Beneficial effects

[0019] This invention provides a crystallizer copper tube with cooling grooves. Compared with the prior art, it has the following advantages:

[0020] 1. The crystallizer copper tube with cooling grooves extends the medium contact time through a spiral path, and the trapezoidal cross section enhances the turbulence effect and improves the heat exchange efficiency. The axial secondary groove reduces flow resistance and connects with the main groove to form an interlaced flow path. Combined with the six sets of evenly distributed designs, it balances the cooling intensity of each area and avoids local overheating.

[0021] 2. The crystallizer copper tube with cooling grooves forms the first line of defense for sealing through the upper and lower connecting caps and sealing rings to prevent media leakage. The limiting ring and limiting groove are precisely positioned so that the sealing gasket can further fill the gap. The sealing cylinder forms a second layer of protection through threaded connection. The double sealing ensures the airtightness of the cooling space and maintains the stability of the system pressure. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a perspective view of the external structure of this utility model;

[0024] Figure 2 This is a front sectional view of the structure of this utility model;

[0025] Figure 3 This is a side sectional view of the structure of this utility model;

[0026] Figure 4This is a top sectional view of the structure of this utility model.

[0027] In the diagram: 1. Copper pipe body; 2. Sealing mechanism; 201. Connecting pipe; 202. Sealing cylinder; 203. Lower connecting cover; 204. Upper connecting cover; 205. Sealing ring; 206. Limiting ring; 207. Water guide groove; 3. Cooling mechanism; 301. Main cooling groove; 302. Secondary cooling groove. Detailed Implementation

[0028] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," 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 application 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 application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0029] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] Reference Figures 1 to 4 This application provides a crystallizer copper tube with cooling grooves, including a copper tube body 1, a sealing mechanism 2 attached to the outer surface of the copper tube body 1, and a cooling mechanism 3 provided on the outer surface of the copper tube body 1. The cooling mechanism 3 includes a main cooling groove 301 and a secondary cooling groove 302 provided on the outer surface of the copper tube body 1. The sealing mechanism 2 includes an upper connecting cover 204 attached to the upper surface of the copper tube body 1, and a lower connecting cover 203 attached to the lower surface of the copper tube body 1. Sealing rings 205 are attached to the inner walls of both the lower connecting cover 203 and the upper connecting cover 204.

[0031] Furthermore, the main cooling groove 301 has a trapezoidal cross-section, with the upper base being wider than the lower base. The main cooling groove 301 is spirally wrapped around the outer surface of the copper tube body 1. The secondary cooling groove 302 has a semi-circular cross-section. The secondary cooling groove is arranged along the axial direction of the copper tube body 1 and is connected to the main groove. The secondary cooling groove 302 is arranged in six groups and is evenly distributed on the outer surface of the copper tube body 1.

[0032] In this embodiment, the medium contact time is extended by a spiral path, the trapezoidal cross section enhances the turbulence effect and improves the heat exchange efficiency; the axial secondary channel reduces the flow resistance and connects with the main channel to form an interlaced flow path. Combined with the six sets of uniformly distributed designs, the cooling intensity of each area is balanced to avoid local overheating.

[0033] Reference Figures 1 to 4 In one aspect of this embodiment, water guide grooves 207 are provided on the inner sides of both the lower connecting cover 203 and the upper connecting cover 204, and connecting pipes 201 are fixedly connected to the outer surfaces of both the lower connecting cover 203 and the upper connecting cover 204.

[0034] Furthermore, the outer surfaces of the lower connecting cover 203 and the upper connecting cover 204 are threaded with a sealing cylinder 202, the copper tube body 1 is disposed inside the sealing cylinder 202, the outer surface of the copper tube body 1 is fixedly connected with a limiting ring 206, and the inner surfaces of the lower connecting cover 203 and the upper connecting cover 204 are provided with a limiting groove to cooperate with the outer surface of the limiting ring 206. The limiting ring 206 is slidably connected to the limiting groove, and a sealing gasket is fixedly connected to the outer surface of the limiting ring 206.

[0035] In this embodiment, the upper connecting cover 204 and the lower connecting cover 203, together with the sealing ring 205, form the first sealing line to prevent media leakage. The limiting ring 206 is precisely positioned with the limiting groove, allowing the sealing gasket to further fill the gap. The sealing cylinder 202 forms the second layer of protection through threaded connection. The double sealing ensures the airtightness of the cooling space and maintains the stability of the system pressure.

[0036] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0037] Working principle: When the copper tube of the crystallizer is put into use, the external cooling system delivers the cooling medium to the sealing mechanism 2 through the connecting pipe 201 on the outer surface of the lower connecting cover 203 or the upper connecting cover 204. The cooling medium first enters the water guide groove 207 on the inner side of the connecting cover. The water guide groove 207 distributes the medium evenly through its own structure, avoiding the medium from directly impacting the cooling tank and causing local flow concentration, thus ensuring a balanced distribution of the medium entering the cooling mechanism 3. The distributed cooling medium simultaneously enters the main cooling tank 301 and the auxiliary cooling tank 302 on the outer surface of the copper tube body 1. In the main cooling tank 301, because the tank body is spiral and has a trapezoidal cross-section, the cooling medium flows along the spiral path. When in motion, the trapezoidal structure guides the formation of a gradual flow velocity, generating strong turbulence within the tank. This significantly increases the contact frequency and heat exchange area with the outer surface of the copper tube body 1, efficiently absorbing the heat generated by the copper tube body 1 in contact with high-temperature molten steel. In the secondary cooling tank 302, because the tank body is axially arranged and has a semi-circular cross-section, the flow resistance of the cooling medium is small, allowing it to flow rapidly along the axial direction. Simultaneously, because the secondary cooling tank 302 is connected to the main cooling tank 301, some of the medium will converge and mix with the medium in the main cooling tank 301 during the flow. This not only replenishes the cooling medium in the main cooling tank 301 but also balances the cooling intensity of different areas of the copper tube body 1 through staggered flow paths, preventing excessively high temperatures caused by local heat accumulation.

[0038] The sealing rings 205 on the inner walls of the upper connecting cover 204 and the lower connecting cover 203 are tightly fitted to the surface of the copper tube body 1, forming the first line of defense against leakage of the medium from the gap between the connecting cover and the copper tube body 1. The limiting ring 206 on the outer surface of the copper tube body 1 is embedded in the limiting groove on the inner side of the connecting cover. The sliding connection ensures the precise relative position of the copper tube body 1 and the connecting cover, avoiding sealing failure caused by assembly deviation, and can also accommodate the slight deformation of the copper tube body 1 caused by temperature changes. At the same time, the sealing gasket on the outer surface of the limiting ring 206 further fills the gap and enhances the sealing effect. Finally, the sealing cylinder 202, which is threaded to the outer surface of the lower connecting cover 203 and the upper connecting cover 204, forms a second layer of protection, enclosing the entire cooling mechanism 3 and the connecting parts. The double seal ensures that the cooling medium always flows in the closed space, maintains the pressure stability in the system, and avoids the cooling efficiency from decreasing due to leakage. The cooling medium that has completed heat exchange flows along the main cooling tank 301 and the secondary cooling tank 302 to the water guide tank 207 at the other end. After being collected by the water guide tank 207, it is discharged to the external cooling system through the corresponding connecting pipe 201, completing one cooling cycle.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crystalliser copper tube with cooling grooves, comprising a copper tube body (1), characterised in that: The outer surface of the copper tube body (1) is fitted with a sealing mechanism (2), and a cooling mechanism (3) is provided on the outer surface of the copper tube body (1). The cooling mechanism (3) includes a main cooling tank (301) and a secondary cooling tank (302) formed on the outer surface of the copper tube body (1); The sealing mechanism (2) includes an upper connecting cover (204) attached to the upper surface of the copper tube body (1), and a lower connecting cover (203) attached to the lower surface of the copper tube body (1). The inner walls of the lower connecting cover (203) and the upper connecting cover (204) are both attached with sealing rings (205).

2. A crystalliser copper tube with cooling grooves according to claim 1, characterised in that: The main cooling tank (301) has a trapezoidal cross-section, with the upper base being wider than the lower base, and the main cooling tank (301) is spirally wrapped around the outer surface of the copper tube body (1).

3. A crystallizer copper tube with cooling grooves according to claim 1, characterized in that: The secondary cooling tank (302) has a semi-circular cross-section. The secondary cooling tank (302) is arranged along the axial direction of the copper tube body (1) and is connected to the main cooling tank (301).

4. A crystalliser copper tube with cooling grooves according to claim 3, characterised in that: The auxiliary cooling tanks (302) are arranged in six groups and are evenly distributed on the outer surface of the copper tube body (1).

5. A crystallizer copper tube with cooling grooves according to claim 1, characterized in that: Water guide grooves (207) are provided on the inner sides of both the lower connecting cover (203) and the upper connecting cover (204), and connecting pipes (201) are fixedly connected to the outer surfaces of both the lower connecting cover (203) and the upper connecting cover (204).

6. A crystalliser copper tube with cooling grooves according to claim 5, characterised in that: The outer surfaces of the lower connecting cover (203) and the upper connecting cover (204) are threaded with a sealing cylinder (202). The copper tube body (1) is disposed inside the sealing cylinder (202). A limiting ring (206) is fixedly connected to the outer surface of the copper tube body (1). The inner surfaces of the lower connecting cover (203) and the upper connecting cover (204) are fitted with a limiting groove on the outer surface of the limiting ring (206). The limiting ring (206) is slidably connected to the limiting groove. A sealing gasket is fixedly connected to the outer surface of the limiting ring (206).

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