A cooling spray device for seamless steel pipe blanks

Abstract

A cooling spraying device for seamless steel pipe blanks belongs to the technical field of seamless steel pipe processing. It comprises a pair of opposite parallel supporting beams, a pair of guide devices arranged between the two supporting beams and installed above the supporting beams, characterized in that: a pair of spraying supports are further fixed above the two supporting beams, the upper parts of the two spraying supports are fixedly connected through a pair of upper sliding rods, a first spraying ring, a second spraying ring and a third spraying ring are sequentially and intermittently arranged on the upper sliding rods from right to left, a group of first spraying ring nozzles, a group of second spraying ring nozzles and a group of third spraying ring nozzles are respectively and intermittently arranged in the circumferential direction of the inner sides of the first spraying ring, the second spraying ring and the third spraying ring, and the first spraying ring, the second spraying ring and the third spraying ring are arranged in concentric circles. Advantage: The spraying position is adjustable and the spraying range is more uniform, which is beneficial to the uniform cooling of the pipe blank and improves the product quality of the seamless steel pipe.

Description

Technical Field

[0001] This utility model belongs to the field of seamless steel pipe processing technology, specifically relating to a cooling spray device for seamless steel pipe billets. Background Technology

[0002] Seamless steel pipes, as an important basic industrial material, are widely used in petroleum, chemical, power, machinery, and construction industries. In the production process of seamless steel pipes, the billet typically undergoes hot working processes such as piercing, rolling, and sizing. These processes are often carried out at high temperatures, generally exceeding 1000℃. After hot working, the billet temperature remains high, and its internal structure is in a non-equilibrium state. If natural cooling is used, problems such as long cooling time, coarse grains, uneven microstructure, and residual stress concentration arise, which in turn affect the mechanical properties, dimensional accuracy, and subsequent processing performance of the steel pipe.

[0003] To improve the overall performance of steel pipes, controlled cooling of the billet after hot working is usually required. Spray cooling is a common method for achieving rapid and uniform cooling. By spraying a cooling medium (such as water or water mist) onto the surface of the high-temperature billet, the cooling rate can be effectively controlled, grains refined, and unfavorable phase transformations suppressed, thereby improving the strength, toughness, and fatigue resistance of the steel pipe. However, existing spray cooling devices generally have the following shortcomings: First, the spray system has a simple structure and uneven cooling water distribution, leading to inconsistent cooling of the billet surface and making it prone to bending deformation or fluctuations in microstructure and properties; second, the spray position is fixed and cannot be changed according to requirements.

[0004] In view of the above, it is necessary to design a cooling spray device for seamless steel tube blanks that can flexibly change the spray position and achieve uniform spray distribution. To this end, the applicant has made a beneficial design, and the technical solution described below arose from this background. Utility Model Content

[0005] The objective of this invention is to provide a cooling spray device for seamless steel pipe blanks, which helps to improve the spray structure, making the spray position adjustable and the spray range more uniform, thereby facilitating uniform cooling of the pipe blank and improving the product quality of seamless steel pipes.

[0006] The present invention accomplishes its objective as follows: a cooling spray device for seamless steel pipe blanks includes a pair of parallel support beams facing each other and a pair of guide devices positioned between the two support beams and spaced above them. The device is characterized by a pair of spray brackets fixed above the two support beams, with the upper parts of the two spray brackets fixedly connected by a pair of upper sliding rods. A first spray ring, a second spray ring, and a third spray ring are sequentially arranged on the upper sliding rods from right to left. A set of first spray ring nozzles, a set of second spray ring nozzles, and a set of third spray ring nozzles are spaced apart on the inner circumference of each of the first, second, and third spray rings, and the first, second, and third spray rings are arranged concentrically.

[0007] In a specific embodiment of this utility model, a third spray ring inlet pipe is provided above the third spray ring, with both ends of the third spray ring inlet pipe being through and the middle part being fixedly connected to the third spray ring; a second spray ring inlet pipe is provided above the second spray ring, with both ends of the second spray ring inlet pipe being through and the middle part being fixedly connected to the second spray ring; a first spray ring inlet pipe is provided above the first spray ring, with one end of the first spray ring inlet pipe being fixedly connected to the first spray ring and the other end extending toward the side of the second spray ring inlet pipe, and the other end of the first spray ring inlet pipe being connected to the opposite end of the second spray ring inlet pipe via a flexible hose, and the opposite end of the third spray ring inlet pipe being connected to the opposite end of the second spray ring inlet pipe via a flexible hose.

[0008] In another specific embodiment of this utility model, the first spray ring nozzle, the second spray ring nozzle and the third spray ring nozzle are atomizing nozzles and are respectively inclined to one side.

[0009] In another specific embodiment of this utility model, the outer circumferential direction of the first spray ring, the second spray ring, and the third spray ring is respectively provided with a set of first spray ring fixing feet, a set of second spray ring fixing feet, and a set of third spray ring fixing feet. Two first spray ring fixing feet are slidably mounted on corresponding upper sliding rods, two second spray ring fixing feet are slidably mounted on corresponding upper sliding rods, and two third spray ring fixing feet are slidably mounted on corresponding upper sliding rods. A lower sliding rod is also provided between the lower parts of the two spray supports. One end of the lower sliding rod is fixedly connected to the lower end of the spray support near the third spray ring, while the other end of the lower sliding rod is a free end and extends towards the other side of the spray support. A second spray ring fixing foot and a third spray ring fixing foot of the second and third spray rings are slidably mounted on the lower sliding rod.

[0010] In another specific embodiment of the present invention, one of the spray brackets, the second spray ring and the third spray ring are respectively disposed between the two guide devices, while the other spray bracket and the first spray ring are disposed on the outside of the guide device.

[0011] In another specific embodiment of this utility model, each of the guiding devices includes a guide roller and a pair of guide roller seats respectively disposed on the corresponding support beams. Each end of the guide roller is formed by a guide roller shaft, and the guide roller shafts are rotatably disposed on the corresponding guide roller seats. A guide roller bearing is disposed between the guide roller shaft and the corresponding guide roller seat, and a guide groove is formed in the middle of the guide roller.

[0012] In a further specific embodiment of this utility model, a cover is provided above the support beam, which houses the guide device, spray bracket, first spray ring, second spray ring, and third spray ring. The cover is configured with an opening at the bottom, and a blank clearance hole is provided on each of the left and right side walls of the cover. A guide device clearance opening is provided at the position of the cover corresponding to the guide device. A pair of limiting plates are also formed downward at the lower opening of the cover, and the limiting plates are respectively engaged with the inner walls of the two support beams on opposite sides for positioning and installation of the cover. A pair of handles are provided at the top of the cover.

[0013] In a further specific embodiment of this utility model, the support beams are respectively fixed to the horizontal reference plane by a support beam column.

[0014] In another specific embodiment of this utility model, a flow guide is fixed between the two supporting beams and at the lower position. The flow guide has a structure that is open from top to bottom and is larger at the top and smaller at the bottom. A flow outlet is opened at the bottom of the flow guide.

[0015] In another specific embodiment of this utility model, a water collection trolley is provided below the support beam and at a position corresponding to the flow guide shroud. A perforated filter plate is provided above the water collection trolley. A water baffle plate is semi-surrounding the perforated filter plate. A set of universal wheels is provided below the water collection trolley. Water is drawn out through an opening on the rear side of the water collection trolley for cooling circulation.

[0016] The present invention has the following advantages due to the above-mentioned structure: Since the first spray ring, the second spray ring and the third spray ring are arranged in a concentric circle and can be slidably set, the positions of the first spray ring, the second spray ring and the third spray ring and the distance between them can be adjusted arbitrarily according to actual needs, so that the spray position can be adjusted according to actual needs and the spray range is more uniform, which is conducive to uniform cooling of the tube blank and improves the product quality of seamless steel pipe. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] In the diagram: 1. Support beam, 11. Support beam column; 2. Guide device, 21. Guide roller, 211. Guide groove, 212. Guide roller shaft, 22. Guide roller seat, 23. Guide roller bearing; 3. Cover, 31. Blank clearance hole, 32. Guide device clearance opening, 33. Limiting plate, 34. Handle; 4. Sprayer bracket, 41. Upper sliding rod, 42. Lower sliding rod; 5. First spray ring, 51. First spray ring water inlet pipe, 52. ... 53. First spray ring fixing foot; 6. Second spray ring; 61. Second spray ring inlet pipe; 62. Second spray ring nozzle; 63. Second spray ring fixing foot; 7. Third spray ring; 71. Third spray ring inlet pipe; 72. Third spray ring nozzle; 73. Third spray ring fixing foot; 8. Flow guide hood; 81. Flow guide outlet; 9. Water collection trolley; 91. Hollowed-out filter plate; 92. Water baffle plate; 93. Universal wheel. Detailed Implementation

[0019] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. However, the description of the embodiments is not a limitation on the technical solution. Any formal but not substantive changes made based on the concept of this utility model should be considered within the protection scope of this utility model.

[0020] In the following description, all directional (or orientational) concepts involving up, down, left, right, front, and back refer to the concepts being described. Figure 1 The description of the location and state is intended to facilitate public understanding and should not be construed as a special limitation on the technical solution provided by this utility model.

[0021] Please see Figure 1 This utility model relates to a cooling spray device for seamless steel pipe blanks, including a pair of parallel support beams 1 facing each other and a pair of guide devices 2 disposed between the two support beams 1 and spaced above the support beams 1.

[0022] The technical innovation of this utility model is as follows: a pair of spray brackets 4 are fixed above the two aforementioned support beams 1. The upper parts of the two aforementioned spray brackets 4 are fixedly connected by a pair of upper sliding rods 41. A first spray ring 5, a second spray ring 6 and a third spray ring 7 are arranged sequentially from right to left on the aforementioned upper sliding rods 41. A set of first spray ring nozzles 52, a set of second spray ring nozzles 62 and a set of third spray ring nozzles 72 are respectively arranged at intervals on the inner circumference of the aforementioned first spray ring 5, second spray ring 6 and third spray ring 7. The aforementioned first spray ring 5, second spray ring 6 and third spray ring 7 are arranged in concentric circles.

[0023] A third spray ring inlet pipe 71 is provided above the aforementioned third spray ring 7, with both ends of the third spray ring inlet pipe 71 passing through and the middle part being fixedly connected to the third spray ring 7; a second spray ring inlet pipe 61 is provided above the aforementioned second spray ring 6, with both ends of the aforementioned second spray ring inlet pipe 61 passing through and the middle part being fixedly connected to the second spray ring 6; a first spray ring inlet pipe 51 is provided above the aforementioned first spray ring 5, with one end of the aforementioned first spray ring inlet pipe 51 being fixedly connected to the first spray ring 5, and the other end extending towards the second spray ring inlet pipe 61, the other end of the aforementioned first spray ring inlet pipe 51 being connected to the opposite end of the aforementioned second spray ring inlet pipe 61 via a flexible hose, and the opposite end of the aforementioned third spray ring inlet pipe 71 being connected to the opposite end of the second spray ring inlet pipe 61 via a flexible hose. The aforementioned first spray ring nozzle 52, second spray ring nozzle 62 and third spray ring nozzle 72 are preferably atomizing nozzles and are respectively inclined to one side. In this embodiment, the first spray ring nozzle 52, the second spray ring nozzle 62 and the third spray ring nozzle 72 are shown to be tilted to the left.

[0024] Furthermore, the outer circumference of the aforementioned first spray ring 5, second spray ring 6, and third spray ring 7 are respectively provided with a set of first spray ring fixing feet 53, a set of second spray ring fixing feet 63, and a set of third spray ring fixing feet 73. The two aforementioned first spray ring fixing feet 53 are slidably mounted on the corresponding upper sliding rods 41, the two aforementioned second spray ring fixing feet 63 are slidably mounted on the corresponding upper sliding rods 41, and the two aforementioned third spray ring fixing feet 73 are slidably mounted on the corresponding upper sliding rods 41. A lower sliding rod 42 is also provided between the lower parts of the two aforementioned spray brackets 4. One end of the lower sliding rod 42 is fixedly connected to the lower end of the spray bracket 4 near the side of the aforementioned third spray ring 7, while the other end of the lower sliding rod 42 is a free end and extends towards the other side of the spray bracket 4. The second spray ring fixing feet 63 and the third spray ring fixing feet 73 of the aforementioned second spray ring 6 and third spray ring 7 are slidably mounted on the lower sliding rod 42.

[0025] Each of the aforementioned guiding devices 2 includes a guide roller 21 and a pair of guide roller seats 22 respectively disposed on the corresponding support beam 1. Each end of the aforementioned guide roller 21 is respectively configured with a guide roller shaft 212. The aforementioned guide roller shafts 212 are respectively rotatably disposed on the corresponding guide roller seats 22. A guide roller bearing 23 is respectively disposed between the aforementioned guide roller shafts 212 and the corresponding guide roller seats 22. A guide groove 211 is formed in the middle of the aforementioned guide roller 21.

[0026] Furthermore, a cover 3 is provided above the aforementioned support beam 1. The cover 3 houses the guide device 2, the spray bracket 4, the first spray ring 5, the second spray ring 6, and the third spray ring 7. The cover 3 is configured with an opening at the bottom. A blank clearance hole 31 is provided on the left and right side walls of the cover 3. A guide device clearance opening 32 is provided at the position of the cover 3 corresponding to the guide device 2. A pair of limiting plates 33 are also formed downward at the lower opening of the cover 3. The limiting plates 33 are respectively engaged on the inner wall of the two support beams 1 on the opposite side for positioning and installation of the cover 3. A pair of handles 34 are provided on the top of the cover 3.

[0027] The aforementioned support beams 1 are each fixed to a horizontal reference plane by a support beam column 11. A flow guide shroud 8 is fixed between the two aforementioned support beams 1 and at a lower position. The flow guide shroud 8 has a vertically continuous structure, wider at the top and narrower at the bottom, and a flow outlet 81 is opened at the bottom of the flow guide shroud 8. One of the aforementioned spray brackets 4, the second spray ring 6, and the third spray ring 7 are respectively arranged between the two guide devices 2, while the other of the aforementioned spray brackets 4 and the first spray ring 5 are arranged on the outside of the guide device 2. In this embodiment, the other of the aforementioned spray brackets 4 and the first spray ring 5 are arranged on the right outer side of the right guide device 2.

[0028] Furthermore, a water collection trolley 9 is provided below the aforementioned support beam 1 and at a position corresponding to the flow guide shroud 8. A perforated filter plate 91 is provided above the aforementioned water collection trolley 9. A water baffle plate 92 is partially surrounded around the aforementioned perforated filter plate 91. A set of universal wheels 93 is provided below the aforementioned water collection trolley 9. Water is drawn out through an opening on the rear side of the aforementioned water collection trolley 9 for cooling circulation.

[0029] Please continue reading. Figure 1First, according to different requirements, the aforementioned first spray ring 5, second spray ring 6, and third spray ring 7 are slid on the upper sliding rod 41 to the ideal position. Then, the tube blank enters the cover 3 through the aforementioned tube blank clearance hole 31 on the left side and is supported on the guide groove 211 of the two guide devices 2. During the sliding process of the tube blank from left to right, the aforementioned first spray ring 5, second spray ring 6, and third spray ring 7 are respectively sleeved on the tube blank, and the aforementioned first spray ring nozzle 52, second spray ring nozzle 62, and third spray ring nozzle 72 spray water evenly around the circumference of the tube blank for cooling. This technical solution can adjust the different positions of the tube blank or the cooling interval distance, so that the tube blank is cooled more evenly, thereby effectively improving the product quality of seamless steel pipes.

[0030] In summary, the technical solution provided by this utility model makes up for the shortcomings of the prior art, successfully completes the utility model task, and faithfully realizes the technical effects described by the applicant in the above technical effect column.

Claims

1. A cooling spray device for seamless steel pipe blanks, comprising a pair of parallel support beams (1) facing each other, and a pair of guide devices (2) disposed between the two support beams (1) and spaced above the support beams (1), characterized in that: A pair of spray brackets (4) are fixed above the two support beams (1). The upper parts of the two spray brackets (4) are fixedly connected by a pair of upper sliding rods (41). A first spray ring (5), a second spray ring (6) and a third spray ring (7) are arranged on the upper sliding rods (41) from right to left. A set of first spray ring nozzles (52), a set of second spray ring nozzles (62) and a set of third spray ring nozzles (72) are arranged on the inner circumference of the first spray ring (5), the second spray ring (6) and the third spray ring (7), respectively. The first spray ring (5), the second spray ring (6) and the third spray ring (7) are arranged in concentric circles.

2. The cooling spray device for a seamless steel pipe billet according to claim 1, characterized in that: A third spray ring inlet pipe (71) is provided above the third spray ring (7), with both ends of the third spray ring inlet pipe (71) connected and the middle part fixedly connected to the third spray ring (7); a second spray ring inlet pipe (61) is provided above the second spray ring (6), with both ends of the second spray ring inlet pipe (61) connected and the middle part fixedly connected to the second spray ring (6); a first spray ring inlet pipe (51) is provided above the first spray ring (5), with one end of the first spray ring inlet pipe (51) fixedly connected to the first spray ring (5) and the other end extending toward the side of the second spray ring inlet pipe (61), the other end of the first spray ring inlet pipe (51) and the opposite end of the second spray ring inlet pipe (61) connected by a hose, and the opposite end of the third spray ring inlet pipe (71) and the opposite end of the second spray ring inlet pipe (61) connected by a hose.

3. The cooling spray device for a seamless steel pipe blank according to claim 1, characterized in that: The first spray ring nozzle (52), the second spray ring nozzle (62) and the third spray ring nozzle (72) are atomizing nozzles and are respectively inclined to one side.

4. The cooling spray device for a seamless steel pipe billet according to claim 1, characterized in that: The outer circumference of the first spray ring (5), the second spray ring (6), and the third spray ring (7) are respectively provided with a set of first spray ring fixing feet (53), a set of second spray ring fixing feet (63), and a set of third spray ring fixing feet (73). Two first spray ring fixing feet (53) are slidably mounted on corresponding upper sliding rods (41), two second spray ring fixing feet (63) are slidably mounted on corresponding upper sliding rods (41), and two third spray ring fixing feet (73) are slidably mounted on corresponding upper sliding rods (41). On the slide rod (41); a sliding rod (42) is also provided between the lower parts of the two spray brackets (4). One end of the sliding rod (42) is fixedly connected to the lower end of the spray bracket (4) near the third spray ring (7), while the other end of the sliding rod (42) is a free end and extends toward the other side of the spray bracket (4). A second spray ring fixing foot (63) and a third spray ring fixing foot (73) of the second spray ring (6) and the third spray ring (7) are slidably provided on the sliding rod (42).

5. The cooling spray device for a seamless steel pipe blank according to claim 1, characterized in that: One of the spray brackets (4), the second spray ring (6) and the third spray ring (7) are respectively positioned between the two guide devices (2), while the other spray bracket (4) and the first spray ring (5) are positioned on the outside of the guide device (2).

6. The cooling spray device for a seamless steel pipe blank according to claim 1, characterized in that: Each of the guiding devices (2) includes a guide roller (21) and a pair of guide roller seats (22) respectively disposed on the corresponding support beams (1). Each end of the guide roller (21) is formed by a guide roller shaft (212), and the guide roller shafts (212) are rotatably disposed on the corresponding guide roller seats (22). A guide roller bearing (23) is disposed between the guide roller shaft (212) and the corresponding guide roller seat (22). A guide groove (211) is formed in the middle of the guide roller (21).

7. The cooling spray device for a seamless steel pipe billet according to claim 1, characterized in that: A cover (3) is provided above the support beam (1). The cover (3) covers the guide device (2), the spray bracket (4), the first spray ring (5), the second spray ring (6) and the third spray ring (7) inside it. The cover (3) is configured with an opening at the bottom. A blank clearance hole (31) is opened on the left and right side walls of the cover (3). A guide device clearance opening (32) is opened at the position of the cover (3) corresponding to the guide device (2). A pair of limiting plates (33) are also formed downward at the lower opening of the cover (3). The limiting plates (33) are respectively locked on the inner wall of the two support beams (1) facing each other for positioning and installation of the cover (3). A pair of handles (34) are provided on the top of the cover (3).

8. The cooling spray device for a seamless steel pipe billet according to claim 1, characterized in that: The support beams (1) are fixed to the horizontal reference plane by a support beam column (11).

9. A cooling spray device for a seamless steel pipe billet according to claim 1, characterized in that: A flow guide (8) is fixed between the two support beams (1) and at the lower position. The flow guide (8) has a structure that is open from top to bottom and is larger at the top and smaller at the bottom. A flow guide outlet (81) is opened at the bottom of the flow guide (8).

10. A cooling spray device for a seamless steel pipe billet according to claim 9, characterized in that: A water collection trolley (9) is provided below the support beam (1) and at the position corresponding to the flow guide shroud (8). A perforated filter plate (91) is provided above the water collection trolley (9). A water baffle plate (92) is partially surrounded by the perforated filter plate (91). A set of casters (93) is provided below the water collection trolley (9). Water is drawn out through an opening on the rear side of the water collection trolley (9) for cooling circulation.

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