Cooling water ring for quenching steel pipe

Abstract

The utility model discloses a cooling water ring for quenching a steel pipe, which is used for quenching and cooling the steel pipe and comprises an inlet cooling water ring and a middle cooling water ring, and the inlet cooling water ring is of an annular structure with a first annular cavity inside; the inner surface of the annular structure of the inlet cooling water ring is provided with a first water outlet surface inclined relative to the moving axis of the steel pipe, and the first water outlet surface surrounds to form a conical surface shape; the circumferential diameter of a conical surface formed by the first water outlet surface is gradually increased in the feeding direction of the steel pipe; a plurality of first water outlet holes are uniformly distributed in the first water outlet surface, and the first water outlet holes are communicated with the first annular cavity; one end face of the inlet cooling water ring is provided with at least one first water inlet hole, and the first water inlet hole is communicated with the first annular cavity. According to the utility model, the steel pipe can be uniformly cooled after being quenched, and inconsistent water yield caused by long-term use can be avoided.

Description

Technical Field

[0001] The utility model relates to a cooling water ring for a quenched steel pipe, belonging to the technical field of heat treatment of steel pipes. Background Art

[0002] At present, in modern manufacturing, the quenching process of steel pipes is one of the key steps to improve their performance. The quenching process involves heating the steel pipe to a certain temperature and then rapidly cooling it to change its microstructure, thereby improving its hardness and durability.

[0003] After searching the prior art, it was found that a Chinese patent with announcement number CN207904306U disclosed a through-type steel pipe tempering production line. The water spray ring of the annular quenching device used in the patent adopts a nozzle, and the water output is fan-shaped. In an ideal state, the water output of the nozzle is consistent, and the fan surface covers the entire circumference of the steel pipe. Uniform cooling is achieved. However, during long-term use, the nozzles are blocked to varying degrees and the water output angle is improperly adjusted. After manual cleaning, the water output is often still not consistent, resulting in differences in the water output of each sprayer, resulting in uneven cooling of the steel pipe surface, causing the outer diameter of the steel pipe to be elliptical and the surface to be uneven. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a quenching steel pipe cooling water ring, which can realize uniform cooling of the steel pipe after quenching and can avoid inconsistent water output during long-term use.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a quenching steel pipe cooling water ring, used for quenching and cooling of steel pipes, comprising:

[0006] An inlet cooling water ring, wherein the inlet cooling water ring is a circular ring structure having a first annular cavity inside;

[0007] The inner surface of the annular structure of the inlet cooling water ring is provided with a first water outlet surface inclined relative to the moving axis of the steel pipe, and the first water outlet surface is surrounded to form a conical shape;

[0008] The circumferential diameter of the conical surface formed by the first water outlet surface gradually increases along the feeding direction of the steel pipe;

[0009] A plurality of first water outlet holes are evenly distributed on the first water outlet surface, and the first water outlet holes are connected to the first annular cavity;

[0010] At least one first water inlet hole is provided on one end surface of the inlet cooling water ring, the first water inlet hole is communicated with the first annular cavity, and the first water inlet hole is suitable for connecting to an external cooling water source;

[0011] An intermediate cooling water ring, wherein the intermediate cooling water ring is a circular ring structure having a second annular cavity inside;

[0012] The inner surface of the intermediate cooling water ring is a toroidal surface, the toroidal surface is a second water outlet surface, a plurality of second water outlet holes are evenly distributed on the second water outlet surface, and the second water outlet holes are connected to the second annular cavity;

[0013] At least one second water inlet hole is provided on one end surface of the intermediate cooling water ring, the second water inlet hole is communicated with the second annular cavity, and the second water inlet hole is suitable for connecting to an external cooling water source;

[0014] The steel pipe is suitable for passing through the inlet cooling water ring and the intermediate cooling water ring in sequence.

[0015] Furthermore, an arrangement range of the first water outlet holes and the second water outlet holes is provided, wherein 4 to 6 rows of first water outlet holes are evenly distributed along the axial direction on the first water outlet surface of the inlet cooling water ring, and 30 to 50 rows of first water outlet holes are evenly distributed along the circumferential direction;

[0016] The second water outlet surface of the intermediate cooling water ring is evenly distributed with 10 to 12 rows of second water outlet holes in the axial direction, and evenly distributed with 30 to 50 rows of second water outlet holes in the circumferential direction.

[0017] Furthermore, specific materials of the inlet cooling water ring and the intermediate cooling water ring are provided, and both the inlet cooling water ring and the intermediate cooling water ring are made of stainless steel.

[0018] Furthermore, the inlet cooling water ring and the intermediate cooling water ring are both made of plates with a thickness of 2 to 4 mm.

[0019] Furthermore, a range of values ​​of the diameters of the first water outlet hole and the second water outlet hole is provided, and the diameters of the first water outlet hole and the second water outlet hole are both 4 to 7 mm.

[0020] Furthermore, the angle between the first water outlet surface of the inlet cooling water ring and the axis of movement of the steel pipe is 40-50°.

[0021] Furthermore, the end surface of the inlet cooling water ring having the first water inlet hole is located on one side of the steel pipe feeding direction.

[0022] Furthermore, the first water inlet hole and the second water inlet hole are provided with quick-release connectors suitable for connecting to an external cooling water source.

[0023] Furthermore, the quenched steel pipe cooling water ring also includes a fixing device, and the fixing device includes:

[0024] A support frame, wherein the support frame is provided with a mounting groove matching the inlet cooling water ring or the intermediate cooling water ring;

[0025] The inlet cooling water ring or the intermediate cooling water ring is suitable for being embedded in the installation groove.

[0026] Furthermore, at least one limiting block is provided in the mounting groove of the support frame, and the limiting block protrudes toward the center of the mounting groove;

[0027] The limit block is suitable for abutting against the axial end face of the inlet cooling water ring or the axial end face of the intermediate cooling water ring when the inlet cooling water ring or the intermediate cooling water ring is installed in the installation groove, so as to limit the axial position of the inlet cooling water ring or the intermediate cooling water ring in the installation groove.

[0028] By adopting the above technical solution, the utility model has the following beneficial effects:

[0029] In the utility model, the inlet cooling water ring adopts a direct water outlet method, and its first water outlet surface is designed to be an inclined cone shape. This design enables the cooling water to achieve all-round and uniform cooling of the steel pipe surface as soon as the steel pipe enters the inlet cooling water ring, and the water outlet direction follows the forward direction of the steel pipe, effectively ensuring the uniformity and efficiency of cooling. At the same time, the intermediate cooling water ring adopts a flushing method for cooling, which further ensures the temperature uniformity of the steel pipe during the entire cooling process.

[0030] In addition, the utility model uses stainless steel as the material, which not only ensures the durability of the entire inlet cooling water ring and the intermediate cooling water ring, but also ensures stability under long-term use. At the same time, the dense arrangement of the first water inlet hole and the second water inlet hole further enables the cooling water to cover the steel pipe surface more evenly, thereby improving the cooling efficiency.

[0031] In summary, the utility model not only ensures the uniformity and efficiency of the steel pipe quenching cooling process, but also effectively solves the problem of uneven cooling caused by uneven water discharge due to long-term use of the steel pipe cooling water spray, as well as the serious ovalization and uneven surface of the steel pipe. These improvements make the utility model have a significant effect in improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a three-dimensional structural schematic diagram of the inlet cooling water ring of the quenching steel tube cooling water ring of the utility model;

[0033] Figure 2 It is a three-dimensional structural schematic diagram of the intermediate cooling water ring of the quenching steel tube cooling water ring of the utility model;

[0034] Figure 3 It is a front view of the inlet cooling water ring of the quenched steel tube cooling water ring of the utility model;

[0035] Figure 4 for Figure 3 Middle AA section view;

[0036] Figure 5 It is a front view of the intermediate cooling water ring of the quenching steel tube cooling water ring of the utility model;

[0037] Figure 6 for Figure 5 Middle BB section view;

[0038] Figure 7 It is a structural schematic diagram of the support frame of the quenched steel pipe cooling water ring of the utility model. DETAILED DESCRIPTION

[0039] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0040] like Figure 1-7 As shown, a quenching steel pipe cooling water ring is used for quenching and cooling the steel pipe, comprising:

[0041] The inlet cooling water ring 1 is a circular ring structure having a first annular cavity inside;

[0042] The inner surface of the annular structure of the inlet cooling water ring 1 is provided with a first water outlet surface 11 inclined relative to the moving axis of the steel pipe, and the first water outlet surface 11 is surrounded to form a conical shape;

[0043] The circumferential diameter of the cone formed by the first water outlet surface 11 gradually increases along the feeding direction of the steel pipe;

[0044] A plurality of first water outlet holes 12 are evenly distributed on the first water outlet surface 11, and the first water outlet holes 12 are connected to the first annular cavity;

[0045] At least one first water inlet hole 13 is provided on one end surface of the inlet cooling water ring 1. The first water inlet hole 13 is connected to the first annular cavity and is suitable for connecting to an external cooling water source.

[0046] The intermediate cooling water ring 2 is a circular ring structure having a second annular cavity inside;

[0047] The inner surface of the intermediate cooling water ring 2 is a toroidal surface, which is the second water outlet surface 21. A plurality of second water outlet holes 22 are evenly distributed on the second water outlet surface 21. The second water outlet holes 22 are connected to the second annular cavity.

[0048] At least one second water inlet hole 23 is provided on one end surface of the intermediate cooling water ring 2. The second water inlet hole 23 is connected to the second annular cavity. The second water inlet hole 23 is suitable for connecting to an external cooling water source.

[0049] The steel pipe is suitable for passing through the inlet cooling water ring 1 and the intermediate cooling water ring 2 in sequence.

[0050] In this embodiment, if Figure 1-6 As shown, the inlet cooling water ring 1 adopts a direct water outlet method, and its first water outlet surface 11 is designed to be an inclined conical surface. This design enables the cooling water to achieve all-round and uniform cooling of the steel pipe surface as soon as the steel pipe enters the inlet cooling water ring 1, and the water outlet direction follows the forward direction of the steel pipe, effectively ensuring the uniformity and efficiency of cooling. At the same time, the intermediate cooling water ring 2 adopts a flushing method for cooling, which further ensures the temperature uniformity of the steel pipe during the entire cooling process.

[0051] In some embodiments, the number of the first water inlet holes 13 and the second water inlet holes 23 is not limited to four and can be set according to specific needs.

[0052] Specifically, Figure 1-4 and Figure 6 As shown, the first water outlet surface 11 of the inlet cooling water ring 1 has 5 rows evenly distributed along the axial direction and 40 columns evenly distributed along the circumferential direction, with a total of 200 first water outlet holes 12;

[0053] A total of 440 second water outlet holes 22 are evenly distributed in 11 rows along the axial direction and 40 columns along the circumferential direction on the second water outlet surface 21 of the intermediate cooling water ring 2 .

[0054] In this embodiment, if Figure 1-4 and Figure 6 As shown, the arrangement range of the first water outlet holes 12 on the first water outlet surface 11 of the inlet cooling water ring 1 can be 4 to 6 rows and 30 to 50 columns.

[0055] The arrangement range of the second water outlet holes 22 on the second water outlet surface 21 of the intermediate cooling water ring 2 may be 10 to 12 rows and 30 to 50 columns.

[0056] Specifically, Figure 1-2 As shown, the inlet cooling water ring 1 and the intermediate cooling water ring 2 are both made of stainless steel.

[0057] In this embodiment, the stainless steel material may specifically be 304 stainless steel.

[0058] Specifically, Figure 1-2 As shown, the inlet cooling water ring 1 and the intermediate cooling water ring 2 are both made of 3 mm thick plates.

[0059] In this embodiment, if Figure 1-2 As shown, the plate thickness of the inlet cooling water ring 1 and the intermediate cooling water ring 2 can range from 2 to 4 mm and are made by welding.

[0060] Specifically, Figure 4 and Figure 6 As shown, the diameters of the first water outlet hole 12 and the second water outlet hole 22 are both 5 mm.

[0061] In this embodiment, if Figure 1-2 and Figure 4 and Figure 6 As shown, the diameter of the first water outlet hole 12 and the second water outlet hole 22 can range from 4 to 7 mm. Of course, in some embodiments, the preferred diameter of the first water outlet hole 12 and the second water outlet hole 22 is not limited to 5 mm, and can be 6 mm.

[0062] Specifically, Figure 1 and Figure 3-4 As shown, the angle between the first water outlet surface 11 of the inlet cooling water ring 1 and the axis of movement of the steel pipe is 45°.

[0063] In this embodiment, if Figure 1 and Figure 3-4 As shown, the angle between the first water outlet surface 11 of the inlet cooling water ring 1 and the axis of movement of the steel pipe can range from 40 to 50 degrees.

[0064] Specifically, Figure 1 and Figure 4 As shown, the end surface of the inlet cooling water ring 1 provided with the first water inlet hole 13 is located on one side of the steel pipe feeding direction.

[0065] In this embodiment, if Figure 4 As shown, it should be noted that the first water inlet 13 is preferably located on one side of the end face close to the feeding direction of the steel pipe to facilitate the connection of an external cooling water source. However, in some embodiments, the position of the first water inlet 13 can also be appropriately adjusted, such as on the outer cylindrical surface or the other end.

[0066] Specifically, Figure 4 and Figure 5-6 As shown, the first water inlet hole 13 and the second water inlet hole 23 are also provided with quick-release connectors (not shown in the figure) suitable for connecting to an external cooling water source.

[0067] In this embodiment, if Figure 1-2 As shown, the use of quick-release connectors can reduce the operation of pipe connection, greatly saving installation and maintenance time. The quick-release connector has a built-in seal, which can form a reliable seal when connected to prevent coolant leakage. The specific model of the quick-release connector can use standard parts.

[0068] In addition, a valve is provided on the pipeline corresponding to the quick-release joint, which can be easily inspected when necessary. A filter device is also provided on the pipeline, which is arranged on the pipeline connecting the external cooling water source and the inlet cooling water ring 1 and the intermediate cooling water ring 2, and is used to filter impurities in the cooling water.

[0069] Specifically, Figure 1-2 and Figure 7 As shown, the quenched steel pipe cooling water ring also includes a fixing device, which can be the following structure, including:

[0070] A support frame 30, on which a mounting groove matching the imported cooling water ring 1 or the intermediate cooling water ring 2 is provided;

[0071] The inlet cooling water ring 1 or the intermediate cooling water ring 2 is suitable for being embedded in the installation groove.

[0072] Specifically, Figure 1-2 As shown, a pair of limit blocks are also provided in the mounting groove of the support frame 30, and the limit blocks protrude toward the center of the mounting groove;

[0073] The limit block is suitable for abutting against the axial end face of the inlet cooling water ring 1 or the axial end face of the intermediate cooling water ring 2 when the inlet cooling water ring 1 or the intermediate cooling water ring 2 is installed in the installation groove, so as to limit the axial position of the inlet cooling water ring 1 or the intermediate cooling water ring 2 in the installation groove.

[0074] In this embodiment, if Figure 1-2 As shown, the fixing device also includes fasteners, and fixed matching blocks are also provided on the inlet cooling water ring 1 and the intermediate cooling water ring 2. After the inlet cooling water ring 1 and the intermediate cooling water ring 2 are installed into the corresponding installation grooves, the fasteners pass through the support frame 30 and the fixed matching blocks to firmly lock them to ensure reliable fixation.

[0075] In some embodiments, the number of limit blocks is not limited to one pair and can be set according to specific needs.

[0076] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quenching steel pipe cooling water ring, used for quenching and cooling of steel pipes, characterized in that: include: An inlet cooling water ring (1), wherein the inlet cooling water ring (1) is a circular ring-shaped structure having a first annular cavity inside; The inner surface of the annular structure of the inlet cooling water ring (1) is provided with a first water outlet surface (11) inclined relative to the moving axis of the steel pipe, and the first water outlet surface (11) is surrounded to form a conical shape; The circumferential diameter of the conical surface formed by the first water outlet surface (11) gradually increases along the feeding direction of the steel pipe; A plurality of first water outlet holes (12) are evenly distributed on the first water outlet surface (11), and the first water outlet holes (12) are connected to the first annular cavity; At least one first water inlet hole (13) is provided on one end surface of the inlet cooling water ring (1), the first water inlet hole (13) is communicated with the first annular cavity, and the first water inlet hole (13) is suitable for connecting to an external cooling water source; An intermediate cooling water ring (2), wherein the intermediate cooling water ring (2) is a circular ring-shaped structure having a second annular cavity inside; The inner surface of the intermediate cooling water ring (2) is a circular ring surface, the circular ring surface is a second water outlet surface (21), a plurality of second water outlet holes (22) are evenly distributed on the second water outlet surface (21), and the second water outlet holes (22) are connected to the second annular cavity; At least one second water inlet hole (23) is provided on one end surface of the intermediate cooling water ring (2), the second water inlet hole (23) is communicated with the second annular cavity, and the second water inlet hole (23) is suitable for connecting to an external cooling water source; The steel pipe is suitable for passing through the inlet cooling water ring (1) and the intermediate cooling water ring (2) in sequence.

2. The quenched steel tube cooling water ring according to claim 1, characterized in that: The first water outlet surface (11) of the inlet cooling water ring (1) has 4 to 6 rows of first water outlet holes (12) evenly distributed along the axial direction, and 30 to 50 rows of first water outlet holes (12) evenly distributed along the circumferential direction; On the second water outlet surface (21) of the intermediate cooling water ring (2), 10 to 12 rows of second water outlet holes (22) are evenly distributed along the axial direction, and 30 to 50 rows of second water outlet holes (22) are evenly distributed along the circumferential direction.

3. The quenched steel tube cooling water ring according to claim 1, characterized in that: The inlet cooling water ring (1) and the intermediate cooling water ring (2) are both made of stainless steel.

4. The quenched steel tube cooling water ring according to claim 1, characterized in that: The inlet cooling water ring (1) and the intermediate cooling water ring (2) are both made of plates with a thickness of 2 to 4 mm.

5. The quenched steel tube cooling water ring according to claim 1, characterized in that: The diameters of the first water outlet hole (12) and the second water outlet hole (22) are both 4 to 7 mm.

6. The quenched steel tube cooling water ring according to claim 1, characterized in that: The angle between the first water outlet surface (11) of the inlet cooling water ring (1) and the axis of movement of the steel pipe is 40 to 50 degrees.

7. The quenched steel tube cooling water ring according to claim 1, characterized in that: The end surface of the inlet cooling water ring (1) provided with the first water inlet hole (13) is located on one side of the steel pipe feeding direction.

8. The quenched steel tube cooling water ring according to claim 1, characterized in that: The first water inlet hole (13) and the second water inlet hole (23) are provided with quick-release joints suitable for connecting to an external cooling water source.

9. The quenched steel tube cooling water ring according to claim 1, characterized in that: Also included is a fixing device, the fixing device comprising: A support frame (30), wherein the support frame (30) is provided with a mounting groove matching the inlet cooling water ring (1) or the intermediate cooling water ring (2); The inlet cooling water ring (1) or the intermediate cooling water ring (2) is suitable for being embedded in the installation groove.

10. The quenched steel tube cooling water ring according to claim 9, characterized in that: At least one limiting block is also provided in the installation groove of the support frame (30), and the limiting block protrudes toward the center of the installation groove; The limit block is suitable for abutting against the axial end face of the inlet cooling water ring (1) or the axial end face of the intermediate cooling water ring (2) when the inlet cooling water ring (1) or the intermediate cooling water ring (2) is installed in the installation groove, so as to limit the axial position of the inlet cooling water ring (1) or the intermediate cooling water ring (2) in the installation groove.

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