Steel pipe spray cooling device

Abstract

The invention provides a steel pipe spray cooling device, and belongs to the technical field of machinery. A steel pipe spray cooling device comprises a cooler inner sleeve, the cooler inner sleeve is provided with a water cooling channel, an inlet and an outlet, the inlet and the outlet are communicated with the water cooling channel, mounting holes arrayed in the circumferential direction are formed in the circumferential wall of the cooler inner sleeve, each mounting hole is fixedly provided with a nozzle, and the nozzles are communicated with the water cooling channel; nozzles of all the nozzles intersect at the central axis position of the water cooling channel, and the spraying directions of the nozzles incline towards the outlet direction. The cooler outer sleeve is arranged on the outer ring of the cooler inner sleeve, the cooler outer sleeve and the cooler inner sleeve form a water inlet cavity, the water inlet cavity is communicated with all the nozzles, and two water inlet pipes communicated with the water inlet cavity are arranged on the cooler outer sleeve.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology, in particular to a steel pipe spray cooling device. Background Art

[0002] When processing steel pipes, in order to achieve the required physical and chemical properties of the steel pipes, a quenching process is usually used to meet the requirements. The steel pipes are heated to about 900°C using a heating coil, and then cooled from 900°C to 100°C in 1 second. In order to reduce the steel pipe to the required temperature in a very short time, water spray cooling is usually used. Multiple nozzles are evenly arranged in a ring on the cooler, and low-temperature cooling water is sprayed to the high-temperature steel pipe at a suitable pressure and flow rate to achieve quenching. At present, most coolers use threaded or stepped hole fixed nozzles, and the quenching effect is related to the spacing between the nozzles. The smaller the spacing between each two nozzles, the better the cooling effect. This type of method will inevitably have the problem of too large spacing between each two adjacent nozzles, thereby affecting the product qualification rate and quenching efficiency. At the same time, this type of method has problems such as inaccurate positioning or complex disassembly and assembly. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems in the prior art and to provide a steel pipe spray cooling device which has the characteristics of good cooling effect.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A steel pipe spray cooling device, comprising:

[0006] A cooler inner sleeve, wherein the cooler inner sleeve has a water cooling channel and an inlet and an outlet connected to the water cooling channel, a circumferential array of mounting holes is opened on the circumferential wall of the cooler inner sleeve, a nozzle is fixed on each mounting hole, the nozzle is connected to the water cooling channel, and the nozzles of all the nozzles intersect at the central axis of the water cooling channel, and the spray direction of the nozzle is inclined toward the outlet direction;

[0007] A cooler jacket, wherein the cooler jacket is arranged on the outer ring of the cooler inner jacket and forms a water inlet chamber with the cooler inner jacket, wherein the water inlet chamber is connected to all the nozzles, and the cooler jacket is provided with two water inlet pipes connected to the water inlet chamber;

[0008] A water retaining ring, the water retaining ring is fixedly installed at the inlet position of the inner sleeve of the cooler and partially closes the inlet. A guide port is arranged at the lower part of the water retaining ring, and the guide port is communicated with the inlet for discharging water in the water cooling channel; a guide pipe portion extending toward the inside of the water cooling channel is also arranged in the middle part of the water retaining ring, and a water retaining ring is arranged at the free end of the guide pipe portion, the water retaining ring is formed with a first protruding ring portion and a second protruding ring portion protruding toward the axial position of the guide pipe portion in the direction close to the inner sleeve of the cooler, and the second protruding ring portion is used to reduce the caliber of the guide pipe portion to reduce the gap between the steel pipe and the guide pipe portion; at least one guide hole is opened on the guide pipe portion, one of which is located at the lowest position of the guide pipe portion, the first protruding portion has a guide hole facing the guide hole, and the guide hole is located between the water retaining ring and the first protruding portion and the second protruding portion;

[0009] A guide sleeve is fixed on the water retaining ring and butt-jointed with the guide pipe portion.

[0010] The above-mentioned steel pipe spray cooling device also includes a bracket, a lifting frame and an adjusting device. The lifting frame is slidably arranged on the bracket and can be lifted and lowered along the bracket; the adjusting device is connected to the lifting frame and is used to drive the lifting frame to move. The adjusting device is a worm gear lift.

[0011] In the above steel pipe spray cooling device, an inner lining made of copper material is fixed to the inner ring of the guide sleeve, and a 45° chamfer is provided on the guide sleeve.

[0012] In the above steel pipe spray cooling device, a water pressure monitoring port is provided on the cooler jacket.

[0013] In the above-mentioned steel pipe spray cooling device, the cooler inner sleeve is circumferentially provided with a step portion, the step portion has a first surface and a second surface that are staggered, the first surface is perpendicular to the second surface, the normal direction of the second surface forms an angle of 60° with the central axis of the cooler inner sleeve, the mounting hole is arranged on the second surface, and the axis of the mounting hole is perpendicular to the second surface, along the central axis direction of the cooler inner sleeve, each second surface has 30 mounting holes (24) and is arranged in a circumferential array, and the mounting holes on two adjacent second surfaces are staggered, and the staggered angle is 6°±0.1°.

[0014] The above-mentioned steel pipe spray cooling device also includes a hollow fixing nail corresponding to the mounting holes one by one, the mounting hole includes a first hole and a second hole, the first hole and the second hole are coaxial and connected, the first hole passes through the second surface, the second hole passes through the inner wall of the inner sleeve of the cooler, and a limiting step is formed at the junction of the first hole and the second hole. The nozzle has a limiting portion, the nozzle is inserted into the second hole and the limiting portion rests on the limiting step, the hollow fixing nail is tightly fixed in the first hole and rests on the limiting portion of the nozzle, and the hollow fixing nail has a water hole connected to the first hole.

[0015] In the above-mentioned steel pipe spray cooling device, a first sealing groove and a second sealing groove are opened on the inner sleeve of the cooler, a first sealing ring is installed on the first sealing groove, and a second sealing ring is installed on the second sealing groove. The outer sleeve of the cooler abuts against the first sealing ring and the second sealing ring to form a seal.

[0016] Compared with the prior art, this application has the following advantages:

[0017] In the present application, water enters the water inlet chamber from the water inlet pipe on the outer jacket of the cooler, and then is sprayed toward the water cooling channel of the inner jacket of the cooler through various nozzles connected to the water inlet chamber. Since the nozzles of all nozzles converge at the central axis of the water cooling channel, and the spraying direction is inclined toward the outlet direction, the steel pipe located in the water cooling channel can be sprayed and cooled efficiently and evenly. When the water has finished cooling the steel pipe, it is discharged through the guide port at the bottom of the water retaining ring. The guide pipe portion in the middle of the water retaining ring and the structures such as the water retaining ring and the guide holes thereon can guide the steel pipe and provide preliminary water flow control to ensure that the steel pipe enters the water cooling channel smoothly. The first protruding ring portion and the second protruding ring portion on the water retaining ring can increase the blocking area, thereby reducing water splashing into the portion of the steel pipe that has not fully entered the cooling channel. Even if water splashes into the guide pipe portion, it can quickly flow out through the guide holes to avoid lowering the temperature of the steel pipe itself in advance, thereby improving the cooling effect of cooling the steel pipe from a high temperature of 900°C to a low temperature of 100°C within the subsequent 1 second. The guide sleeve is docked with the guide pipe portion to further enhance the guiding effect on the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereogram structure diagram in this application;

[0019] Figure 2 It is a cross-sectional structural diagram in this application;

[0020] Figure 3 It is a structural diagram of the inner sleeve of a cooler in this application;

[0021] Figure 4 It is a cross-sectional view of a cooler inner sleeve in the present application;

[0022] Figure 5 It is a cross-sectional structural diagram of a water retaining ring in the present application;

[0023] Figure 6 It is an exploded view of the position of the inner sleeve of a cooler in this application;

[0024] Figure 7 It is a cross-sectional structural diagram in this application.

[0025] In the figure,

[0026] AA, central axis; AR, injection direction; α, angle;

[0027] 100. Steel pipe;

[0028] 2. Cooler inner sleeve; 21. Water cooling channel; 22. Inlet; 23. Outlet; 24. Mounting hole; 241. First hole; 242. Second hole; 243. Position limiting step; 25. Step portion; 251. First surface; 252. Second surface;

[0029] 3. Cooler jacket; 31. Water inlet chamber; 32. Water inlet pipe; 34. Water pressure monitoring port;

[0030] 4. water retaining ring; 41. flow guide port; 42. guide tube portion; 421. water retaining ring; 4211. first protruding ring portion; 4212. second protruding ring portion; 422. flow guide hole;

[0031] 5. Guide sleeve; 51. Lining; 52. Chamfer;

[0032] 6. nozzle; 61. limiting part;

[0033] 8. Bracket;

[0034] 9. Lifting frame;

[0035] 10. Adjustment device;

[0036] 11. Hollow fixing nail; 111. Water hole;

[0037] 12. The first sealing ring;

[0038] 13. Second sealing ring;

[0039] 14. Cooler support rod. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figures 1 to 7 As shown, a steel pipe 100 spray cooling device includes: a cooler inner sleeve 2, a cooler outer sleeve 3, a water retaining ring 4 and a guide sleeve 5. The cooler inner sleeve 2 has a water cooling channel 21 and an inlet 22 and an outlet 23 connected to the water cooling channel 21. A circumferential array of mounting holes 24 are opened on the circumferential wall of the cooler inner sleeve 2. A nozzle 6 is fixed on each mounting hole 24. The nozzle 6 is connected to the water cooling channel 21, and the nozzles of all nozzles 6 intersect at the position of the central axis AA of the water cooling channel 21. The spray direction AR of the nozzle 6 is inclined toward the outlet 23; the cooler outer sleeve 3 is arranged on the outer ring of the cooler inner sleeve 2, and forms a water inlet chamber 31 with the cooler inner sleeve 2. The water inlet chamber 31 is connected to all nozzles 6. Two water inlet pipes 32 connected to the water inlet chamber 31 are arranged on the cooler outer sleeve 3; the water retaining ring 4 is fixedly installed at the inlet 22 position of the cooler inner sleeve 2, and partially closes the inlet 22. The lower part of the water retaining ring 4 A guide port 41 is provided at the water retaining ring 4, which is connected to the inlet 22 and is used to discharge water in the water-cooling channel 21; a guide pipe portion 42 extending toward the inside of the water-cooling channel 21 is also provided at the middle of the water retaining ring 4, and a water retaining ring 421 is provided at the free end of the guide pipe portion 42. The water retaining ring 421 is formed with a first protruding ring portion 4211 and a second protruding ring portion 4212 protruding toward the axial position of the guide pipe portion 42 in the direction close to the inner sleeve 2 of the cooler, and the second protruding ring portion 4212 is used to reduce the caliber of the guide pipe portion 42 to reduce the gap with the steel pipe 100; at least one guide hole 422 is opened on the guide pipe portion 42, one of the guide holes 422 is located at the lowest position of the guide pipe portion 42, the first protruding portion has a guide hole 422 facing the guide hole 422, and the guide hole 422 is located between the water retaining ring 4 and the first protruding portion and the second protruding portion; the guide sleeve 5 is fixed on the water retaining ring 4 and docked with the guide pipe portion 42.

[0042] In the present application, water enters the water inlet chamber 31 from the water inlet pipe 32 on the cooler jacket 3. Furthermore, two water inlet pipes 32 are distributed on opposite sides of the cooler jacket 3. Water entering both sides at the same time can better ensure water pressure, and then the water is sprayed to the water cooling channel 21 of the cooler inner jacket 2 through each nozzle 6 connected to the water inlet chamber 31. Since the nozzles of all nozzles 6 intersect at the position of the central axis AA of the water cooling channel 21, and the spray direction AR is inclined toward the outlet 23, the steel pipe 100 located in the water cooling channel 21 can be sprayed and cooled efficiently and evenly. When the water finishes cooling the steel pipe 100, it is discharged through the guide port 41 at the bottom of the water retaining ring 4. The guide tube portion 42 in the middle of the water retaining ring 4 and the structures such as the water retaining ring 421 and the guide hole 422 thereon can guide the steel pipe 100 and provide preliminary water flow control, ensuring that the steel pipe 100 smoothly enters the water cooling channel 21. The first protruding ring portion 4211 and the second protruding ring portion 4212 on the water retaining ring 421 can increase the blocking area, thereby reducing water splashing into the portion of the steel pipe 100 that has not fully entered the cooling channel. Even if water splashes into the guide tube portion 42, it can quickly flow out through the guide hole 422, avoiding premature lowering of the temperature of the steel pipe 100 itself, thereby improving the cooling effect of cooling the steel pipe 100 from a high temperature of 900°C to a low temperature of 100°C within the subsequent 1 second. The guide sleeve 5 is docked with the guide tube portion 42 to further enhance the guiding effect on the steel pipe 100.

[0043] By arranging a plurality of nozzles 6 in a circumferential array and intersecting the nozzles at the center axis AA, the steel pipe 100 can be cooled in an all-round, rapid and uniform manner, thereby improving the quenching efficiency and quality. In addition, the design inclined toward the outlet 23 can reduce the flow of water into the guide pipe portion 42, thereby avoiding premature reduction of the temperature of the steel pipe 100.

[0044] Specifically, it also includes a bracket 8, a lifting frame 9 and an adjusting device 10. The lifting frame 9 is slidably set on the bracket 8 and can be lifted and lowered along the bracket 8. The adjusting device 10 is connected to the lifting frame 9 and is used to drive the lifting frame 9 to move. The adjusting device 10 is a worm gear lift.

[0045] The worm gear elevator is connected to the lifting frame 9 as an adjustment device 10. When the height of the lifting frame 9 needs to be adjusted, the worm gear elevator is started, and the lifting frame 9 is driven to move up and down on the bracket 8 through the transmission action of the worm gear. The worm gear transmission has a self-locking characteristic. After stopping the drive, the lifting frame 9 can stably maintain the adjusted position without accidental sliding.

[0046] In this way, the height position of the cooling device can be flexibly changed according to actual needs. For example, when steel pipes 100 of different diameters or lengths need to be cooled, the cooling device can be adjusted to a suitable height to ensure that the steel pipe 100 can accurately enter the water cooling channel 21 of the cooler inner jacket 2 and obtain the best cooling effect.

[0047] Specifically, an inner lining 51 made of copper material is fixed to the inner ring of the guide sleeve 5 , and a 45° chamfer 52 is provided on the guide sleeve 5 .

[0048] The inner lining 51 made of copper material has good wear resistance, can reduce the friction damage between the steel pipe 100 and the guide sleeve 5, and extend the service life of the guide sleeve 5. The 45° chamfer 52 on the guide sleeve 5 can make the steel pipe 100 enter the guide sleeve 5 more smoothly, reducing jams and collisions. The steel pipe 100 is heated to about 900 degrees and contacts when entering the cooler. General materials are not heat-resistant enough and will soften or even melt over time. The inlay of copper is to resist high temperatures and prevent softening or melting.

[0049] Specifically, a water pressure monitoring port 34 is provided on the cooler jacket 3 .

[0050] It is possible to understand the water pressure inside the cooler in real time to ensure that the water pressure is within an appropriate range. For example, when the water pressure is too high, the water inlet flow rate can be adjusted in time to avoid excessive pressure on the cooler and pipeline. When the water pressure is too low, it can be checked in time to see if there are problems such as blockage or leakage. Stable and appropriate water pressure helps the water flow sprayed from the nozzle 6 to maintain a stable flow rate and pressure, thereby ensuring uniform cooling of the steel pipe 100. If the water pressure is unstable, it may cause insufficient or excessive cooling of certain parts, affecting the quality of the steel pipe 100.

[0051] Specifically, the cooler inner sleeve 2 is circumferentially provided with a step portion 25, the step portion 25 has a first surface 251 and a second surface 252 that are staggered, the first surface 251 is perpendicular to the second surface 252, the normal direction of the second surface 252 forms an angle α of 60° with the central axis AA of the cooler inner sleeve 2, the mounting hole 24 is arranged on the second surface 252, and the axis of the mounting hole 24 is perpendicular to the second surface 252, along the direction of the central axis AA of the cooler inner sleeve 2, the mounting holes 24 on each second surface 252 are arranged in a circumferential array, and the mounting holes 24 on two adjacent second surfaces 252 are staggered, and the staggered angle is 6°±0.1°.

[0052] Since the mounting holes 24 are staggered on two adjacent second surfaces 252, the water flow sprayed from the nozzle 6 can cover the surface of the steel pipe 100 more comprehensively and evenly, avoiding the cooling blind area, thereby improving the uniformity of the overall cooling effect. When cooling a longer steel pipe 100, this staggered distribution can ensure that the steel pipe 100 can be fully and evenly cooled from beginning to end. The staggered first surface 251 and the second surface 252, as well as the second surface 252 at a specific angle, can allow the water flow to be sprayed onto the steel pipe 100 through the nozzle 6 at a more reasonable angle and position, enhancing the cooling effect, and the nozzle 6 can be arranged as densely as possible, so that the steel pipe 100 can complete the cooling effect from 900°C to 100°C within 1 second.

[0053] The first surface 251 is perpendicular to the second surface 252, and the normal direction of the second surface 252 forms an angle α of 60° with the central axis AA of the cooler inner sleeve 2. This design facilitates the processing of the mounting holes 24 on the second surface 252. Moreover, during processing, the drill bit can be vertically aligned with the second surface 252, and the misalignment angle of each mounting hole 24 can be controlled more accurately, and the error progress can be controlled within 6°±0.1°. Through this design, the distance between the spray groups can be greatly reduced, and the cooling effect can be improved, thereby ensuring that under the condition of meeting the quenching effect, higher production efficiency and increased production capacity are achieved.

[0054] In the present application, 30 nozzles 6 are installed on each second surface 252, and the 30 nozzles 6 are arranged in a circumferential array around the second surface 252, and 8 rows are arranged at equal intervals along the axial direction of the cooler inner sleeve 2 (the spacing between two rows is 16mm±0.1mm, there is a misalignment between every two rows, and the misalignment angle is 6°±0.1°), with a total of 240 nozzles 6.

[0055] Specifically, it also includes a hollow fixing nail 11 corresponding to the mounting hole 24 one by one, the mounting hole 24 includes a first hole 241 and a second hole 242, the first hole 241 and the second hole 242 are coaxial and connected, the first hole 241 passes through the second surface 252, the second hole 242 passes through the inner wall of the cooler inner sleeve 2, and a limiting step 243 is formed at the junction of the first hole 241 and the second hole 242. The nozzle 6 has a limiting portion 61, the nozzle 6 is inserted into the second hole 242 and the limiting portion 61 abuts on the limiting step 243. Further, a sealing member is sleeved on the limiting portion 61, and the sealing member abuts on the inner wall of the first hole 241 to achieve sealing. The hollow fixing nail 11 is tightly fixed in the first hole 241 and abuts on the limiting portion 61 of the nozzle 6. The hollow fixing nail 11 has a water hole 111 connected with the first hole 241.

[0056] The optical axis of the nozzle 6 is precisely machined to achieve positioning and matching with the mounting hole 24 on the cooler inner sleeve 2, and the end is tightly sealed with a hollow fixing pin 11 to ensure that the water outlet route of each circle of the nozzle 6 accurately intersects on the central axis AA of the cooler inner sleeve 2. Because the smaller the spacing between the nozzles 6, the better the cooling effect, the device can shorten the spacing between every two nozzles 6 to a very small size, thereby ensuring higher production efficiency and increased production capacity under the condition of meeting the quenching effect. At the same time, since the nozzle 6 is a consumable, the hollow fixing pin 11 is used to tighten and seal it, which is easy and convenient to disassemble, greatly reducing the manual workload.

[0057] Furthermore, two cooler support rods 14 arranged in parallel are installed on the bracket 8 , and the cooler jacket 3 abuts against the cooler support rods 14 .

[0058] Two cooler support rods 14 are installed below to support the entire cooler, so as to facilitate the cooler to be pushed in (pushed out) when loaded (disassembled).

[0059] Specifically, the cooler inner sleeve 2 is provided with a first sealing groove and a second sealing groove, the first sealing groove is provided with a first sealing ring 12, the second sealing groove is provided with a second sealing ring 13, and the cooler outer sleeve 3 abuts against the first sealing ring 12 and the second sealing ring 13 to form a seal.

[0060] The first sealing ring 12 and the second sealing ring 13 can form a reliable seal between the cooler inner sleeve 2 and the outer sleeve, preventing cooling water from leaking from the connection between the two, thereby improving the sealing performance of the cooling system and the utilization rate of water resources. A good seal can ensure that the cooling water flows in a predetermined channel and maintains a stable water pressure, which helps the water flow sprayed from the nozzle 6 to maintain a stable flow rate and pressure, thereby ensuring the stability and consistency of the cooling effect.

[0061] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative position relationship and movement status of the components in a certain specific posture, as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0062] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. At the same time, the meaning of "and / or" appearing in the full text is that it includes three schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0063] The above components are all common standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0064] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A steel pipe spray cooling device, characterized in that: include: A cooler inner sleeve (2), the cooler inner sleeve (2) having a water cooling channel (21) and an inlet (22) and an outlet (23) connected to the water cooling channel (21), a circumferential array of mounting holes (24) being provided on a circumferential wall of the cooler inner sleeve (2), a nozzle (6) being fixed on each mounting hole (24), the nozzle (6) being connected to the water cooling channel (21), and the nozzles of all the nozzles (6) converging at a position AA of the central axis of the water cooling channel (21), and the spraying direction (AR) of the nozzle (6) being inclined toward the outlet (23); A cooler jacket (3), the cooler jacket (3) being arranged on the outer ring of the cooler inner jacket (2) and forming a water inlet chamber (31) with the cooler inner jacket (2), the water inlet chamber (31) being connected to all the nozzles (6), and the cooler jacket (3) being provided with two water inlet pipes (32) connected to the water inlet chamber (31); A water retaining ring (4), the water retaining ring (4) is fixedly mounted at the inlet (22) position of the cooler inner sleeve (2) and partially closes the inlet (22); a guide port (41) is provided at the lower part of the water retaining ring (4), the guide port (41) is communicated with the inlet (22) and is used for discharging water in the water cooling channel (21); a guide pipe portion (42) extending toward the inside of the water cooling channel (21) is also provided at the middle part of the water retaining ring (4), a water retaining ring (421) is provided at the free end of the guide pipe portion (42), and the water retaining ring (421) is formed in a direction close to the cooler inner sleeve (2). A first protruding ring portion (4211) and a second protruding ring portion (4212) protruding toward the axial position of the guide tube portion (42), wherein the second protruding ring portion (4212) is used to reduce the diameter of the guide tube portion (42) so as to reduce the gap between the guide tube portion (42) and the steel pipe (100); at least one flow guide hole (422) is opened on the guide tube portion (42), wherein one flow guide hole (422) is located at the lowest position of the guide tube portion (42); the first protruding portion has a flow guide hole (422) facing the guide hole (422), and the flow guide hole (422) is located between the water retaining ring (4) and the first protruding portion and the second protruding portion; and A guide sleeve (5), wherein the guide sleeve (5) is fixed on the water retaining ring (4) and butt-jointed with the guide pipe portion (42).

2. The steel pipe spray cooling device according to claim 1, characterized in that: It also comprises a support (8), a lifting frame (9) and an adjusting device (10); the lifting frame (9) is slidably arranged on the support (8) and can be lifted and lowered along the support (8); the adjusting device (10) is connected to the lifting frame (9) and is used to drive the lifting frame (9) to move; the adjusting device (10) is a worm gear lift.

3. The steel pipe spray cooling device according to claim 1, characterized in that: An inner lining (51) made of copper material is fixed to the inner ring of the guide sleeve (5), and a chamfer (52) of 45° is provided on the guide sleeve (5).

4. The steel pipe spray cooling device according to claim 1, characterized in that: The cooler jacket (3) is provided with a water pressure monitoring port (34).

5. The steel pipe spray cooling device according to claim 1, characterized in that: The cooler inner sleeve (2) is provided with a step portion (25) in the circumferential direction, and the step portion (25) has a first surface (251) and a second surface (252) that are staggered, the first surface (251) is perpendicular to the second surface (252), the normal direction of the second surface (252) forms an angle (α) of 60° with the central axis AA of the cooler inner sleeve (2), the mounting hole (24) is arranged on the second surface (252), and the axis of the mounting hole (24) is perpendicular to the second surface (252), along the central axis AA of the cooler inner sleeve (2), each second surface (252) has 30 mounting holes (24) and are arranged in a circumferential array, and the mounting holes (24) on two adjacent second surfaces (252) are staggered, and the staggered angle is 6°±0.1°.

6. The steel pipe spray cooling device according to claim 5, characterized in that: The invention also comprises a hollow fixing nail (11) corresponding to the mounting hole (24) one by one. The mounting hole (24) comprises a first hole (241) and a second hole. The first hole (241) and the second hole (242) are coaxial and connected. The first hole (241) passes through the second surface (252). The second hole (242) passes through the inner wall of the cooler inner sleeve (2). A limiting step (243) is formed at the junction of the first hole (241) and the second hole (242). The nozzle (6) has a limiting portion (61). The nozzle (6) is inserted into the second hole (242) and the limiting portion (61) abuts against the limiting step (243). The hollow fixing nail (11) is tightly fixed in the first hole (241) and abuts against the front end of the limiting portion (61) of the nozzle (6). The hollow fixing nail (11) has a water passage hole (111) connected to the first hole (241).

7. The steel pipe spray cooling device according to claim 1, characterized in that: The cooler inner sleeve (2) is provided with a first sealing groove and a second sealing groove, the first sealing groove is provided with a first sealing ring (12), the second sealing groove is provided with a second sealing ring (13), and the cooler outer sleeve (3) abuts against the first sealing ring (12) and the second sealing ring (13) to form a seal.

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