A post rolling cooling x-type purging method and purging device

Abstract

The application discloses a post-rolling cooling X-shaped blowing method and a blowing device, and belongs to the technical field of hot rolling and cooling. The X-shaped blowing method is suitable for a blowing device matched with a cooling roller way. The blowing device fully considers the difference of the transverse residual water distribution of the post-cooling steel, adopts a unique X-shaped structure, and reasonably arranges a spray pipe and a spraying component, so that the blowing effect is effectively improved, and the uniformity of the transverse cooling of the steel and the surface quality are ensured. Meanwhile, the design of the combination of the X-shaped structure with a protection ring, a self-adapting angle control assembly and a detachable nozzle further improves the universality of the application scene and the convenience of the subsequent device maintenance, is favorable for improving the actual production efficiency and economic benefits, and has a good market application prospect.

Description

Technical Field

[0001] This application relates to the field of hot rolling cooling technology, and more specifically, to a post-rolling cooling X-type purging method and purging device. Background Technology

[0002] Since the 21st century, TMCP technology has been widely applied in the hot rolling industry. Controlled cooling, as a key component of TMCP, plays a crucial role in regulating the microstructure and properties of hot-rolled steel. With the development of cooling technology, the use of high-pressure and high-flow-rate cooling water has become a key strategy for improving cooling intensity. However, this strategy also brings new challenges. After advanced cooling processes such as ACC, DQ, and UFC, a large amount of cooling water often remains on the surface of hot-rolled steel. If this residual water is not removed in time, it will not only seriously affect the cooling uniformity of the steel but also negatively impact its surface quality. Furthermore, the cooled steel surface may also have residual oxide scale, which adversely affects subsequent processes (such as cold rolling and coating). Therefore, specific purging devices are usually required after cooling to remove residual water and oxide scale, accelerating the cooling of the steel plate to room temperature to ensure stable cooling effect, production quality, and production efficiency.

[0003] Currently, the industry mainly uses two types of purging devices: one is a transverse purging device arranged above the cooling roller conveyor, and the other is a side spray device arranged above the side of the cooling roller conveyor. The side spray device is mainly used to prevent localized overcooling, and its purging effect is relatively small. Therefore, how to improve the purging effect of the transverse purging device has always been a problem that the industry urgently needs to solve. Patent application CN116772554A describes a purging device with transversely arranged spray components, which uniformly purifies the strip through the air outlets of two purging sections; patent application CN214235613U proposes a water-air dual-use purging device, whose double-row spray components are also uniformly arranged transversely; patent application CN109207688A also discloses a purging device, although its protective components have changed, the spray components are still uniformly arranged transversely with fixed ends. The aforementioned prior art has a common problem: it does not consider the differences in the transverse residual water distribution of the steel after cooling, and the spray components are all uniformly arranged transversely. While patent application CN215745533U discloses a triangularly arranged purging device, it primarily addresses the issue of indentations and non-metallic inclusions after hot rolling, and is unrelated to purging residual water after cooling. Application CN203972497U discloses a herringbone-shaped transverse purging manifold in its drawings, but its purging effect is still not ideal, requiring the addition of a longitudinal purging manifold to ensure steel plate quality. Therefore, considering the above, developing a transverse purging device with good post-cooling purging effect, strong adaptability, and easy maintenance is of great significance for improving production efficiency and economic benefits. Summary of the Invention

[0004] In view of this, this application provides a post-rolling cooling X-type purging method and purging device, which mainly aims to solve the problems of poor purging effect, poor adaptability and high maintenance cost of the current purging method and purging device.

[0005] To achieve the above objectives, the technical solution provided in this application is as follows:

[0006] A post-rolling cooling X-type purging method is applicable to a purging device that works in conjunction with a cooling roller conveyor. The purging device includes: an air supply assembly and N purging assemblies, where N ≥ 1.

[0007] The purging assembly includes an X-shaped nozzle and its spraying components disposed above and parallel to the cooling roller conveyor;

[0008] The length of the forearm of the X-type nozzle is shorter than the length of the rear arm, and the included angle between the forearms is 115°-155°.

[0009] The purging method includes:

[0010] When the purging assembly is positioned at the beginning of the cooling section, the included angle between the forearms of the X-shaped nozzle faces inward toward the cooling section.

[0011] When the purging assembly is positioned at the end of the cooling section, the included angle between the forearms of the X-shaped nozzle faces inward toward the cooling section.

[0012] In some embodiments, the X-type nozzle includes an external sealing tube communicating with the injection component and an internal flow equalization tube having flow equalization holes on its wall.

[0013] In some embodiments, the spraying component is a nozzle obliquely disposed on an X-shaped nozzle; the purging method includes:

[0014] When the purging assembly is arranged at the beginning of the cooling section, the inclination angle of the nozzles is set in the direction of the cooling roller conveyor, and the angle between the nozzle and the vertical plane is 10°-50°.

[0015] When the purging assembly is located at the end of the cooling section, the inclination angle of the nozzles is set against the running direction of the cooling roller conveyor, and the angle between the nozzle and the vertical plane is 10°-50°.

[0016] In some embodiments, the purging assembly further includes M annular members with inner and outer rings spaced apart between the jetting members, M≥4, wherein a portion of the inner ring arc is connected to the outer wall of the X-shaped nozzle, and the arc diameter is adapted to the outer wall diameter of the X-shaped nozzle.

[0017] The length of the annular component is greater than the longitudinal length corresponding to the combination of the X-type nozzle and the injection component, and the width of the annular component is greater than the transverse width corresponding to the combination of the X-type nozzle and the injection component; the purging method includes:

[0018] The annular components are spaced apart between 2-6 spraying components.

[0019] In some embodiments, the annular member has an opening, the width of which is equal to the arc diameter of the inner ring, and the annular member can be directly fixed to the X-shaped nozzle through the opening.

[0020] In some embodiments, the purging device further includes a fixing component and a pair of adaptive angle adjustment components arranged at both ends of the purging component.

[0021] The adaptive angle adjustment component includes a rotatable shaft, a bushing, an associated component, and a connecting seat;

[0022] Under certain stress conditions, the rotatable shaft can rotate 360° within the bushing;

[0023] The connector is mounted on the fixed assembly; the purging method includes:

[0024] The connecting component is connected to both the rotatable shaft and the purging assembly to link their movements.

[0025] In some embodiments, the adaptive angle adjustment component further includes a positioning pin, and the rotatable shaft is connected to an associated component via the positioning pin; the purging method includes:

[0026] The positioning pin sets the angle of the associated component and the purging assembly relative to the rotatable axis after they are combined; and the positioning pin has an anti-unintended rotation locking mechanism to ensure that the combination of the associated component and the purging assembly is stable at the set angle.

[0027] In some embodiments, the connector is detachably mounted on the fixing component, which has multiple connector mounting positions at different heights.

[0028] In some embodiments, the gas supply assembly includes a gas storage tank, connecting pipes, and a control component; the control component includes a central control and individual controls; the method includes:

[0029] The master control unit is used to control the opening and closing of N purging assemblies, while the individual control unit is used to control the opening and closing of each purging assembly.

[0030] In some embodiments, the gas supply assembly can supply gas, water, and heated gas.

[0031] In some embodiments, when the number of purging components N > 1, the air supply component can supply both air and water simultaneously.

[0032] In some embodiments, the end of the X-shaped nozzle forearm has a protective arc-shaped end cap.

[0033] In some embodiments, the width between the forearms of the X-shaped nozzle is W. FThe width of the cooling roller conveyor is W C Where: 200mm≤W F ≤1 / 2W C .

[0034] In some embodiments, the width of the X-shaped nozzle is W, and the width of the cooling roller conveyor is W. C The width of the steel after cooling is W. S , where: W S ≤W<W C The number and spacing of the spray components are set according to the width of the cooling roller conveyor, production requirements, and production costs.

[0035] In some embodiments, the spraying component is a detachable cylindrical nozzle, which includes a fixed portion and a detachable portion, wherein the fixed portion is fixedly mounted on the X-shaped nozzle.

[0036] In some embodiments, the number of cylindrical nozzles arranged laterally on the X-shaped nozzle is 1-3.

[0037] In some embodiments, the air outlet component of the detachable portion of the cylindrical nozzle is circular, fan-shaped, or tongue-shaped.

[0038] In some embodiments, the purging method includes: the purging device may be arranged in the same cooling section as a conventional transverse purging device.

[0039] Based on the above technical solution, the X-type post-rolling cooling and purging device provided in this application fully considers the differences in the distribution of residual water in the transverse direction of the cooled steel. Utilizing the unique "X" structure, spray components are rationally arranged on the cooling roller conveyor, and the number of spray components is increased within a certain range in the middle, effectively promoting the removal of residual water and oxide scale, balancing the uniformity of transverse cooling of the steel, and ensuring its surface quality. Simultaneously, the purging method provided in this application also considers improving the cooling accuracy within the cooling section. Through the specific arrangement of the purging device at the beginning and end of the cooling section, it not only solves the problem of cleaning residual water at the end of the cooling section but also provides a good water-blocking effect at the beginning of the cooling section, preventing cooling water from flowing back into adjacent cooling sections or other process sections, thus improving cooling accuracy and broadening its applicability. Furthermore, the design of the protective ring, adaptive angle adjustment component, and detachable nozzles in the X-type purging device further enhances the versatility of the device's application scenarios and the convenience of subsequent maintenance, which is beneficial for improving production efficiency and economic benefits.

[0040] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0041] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0042] Figure 1 These are installation diagrams of some embodiments of this application;

[0043] Figure 2 These are schematic diagrams illustrating the specific structures of some embodiments of this application;

[0044] Figure 3 These are cross-sectional structural schematic diagrams of some embodiments of this application;

[0045] Figure 4 yes Figure 1 Schematic diagram of the structure at positions A and B in the middle;

[0046] Figure 5 These are schematic diagrams of the structure of some embodiments of this application;

[0047] Figure 6 This is a partial structural diagram of some embodiments of this application.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1—Purge assembly; 11—X-type nozzle; 12—Spraying component; 13—Annular component; 111—Sealing pipe; 112—Flow equalization pipe; 113—Arc-faced end cap; 1121—Flow equalization orifice; 12-1—Nozzle; 12-11—Removable cylindrical nozzle; 12-111—Fixed part; 12-11—Removable part; 13-1—Open annular component; 2—Air supply assembly; 21—Air tank; 22—Connecting pipe; 23—Control component; 231—Main control; 232—Individual control; 3—Cooling roller conveyor; 4—Cooled steel; 5—Fixed assembly; 6—Adaptive angle adjustment assembly; 61—Rotable shaft; 62—Shaft sleeve; 63—Connecting part; 64—Connecting seat; 65—Positioning pin. Detailed Implementation

[0050] The following specific examples illustrate the embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of this application. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual objects, and should not be construed as limiting the application. To better illustrate the embodiments of this application, it is understandable that some well-known structures or steps and their descriptions may be omitted in the drawings.

[0051] In the description of this application, it should be noted that the terms "longitudinal," "lateral," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this disclosure 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 disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0052] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "installation," "arrangement," "connection," etc., 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0053] This application discloses a post-rolling cooling X-type purging method, applicable to a purging device that works in conjunction with a cooling roller conveyor. The purging device is installed in a certain cooling section and specifically includes: an air supply component and N purging components, where N≥1, that is: the purging components can be arranged individually or in multiples.

[0054] In some embodiments, such as Figure 1 As shown, a purging assembly 1 is arranged at the beginning and end of the cooling section. An air supply assembly 2 is connected to the purging assembly 1 and is typically used to provide pressurized gas to the purging assembly. Each purging assembly 1 includes an X-shaped nozzle 11 positioned above and parallel to the cooling roller conveyor 3, along with its spraying component 12. In other words, the purging assembly 1 is arranged laterally above the cooled steel 4, and as the cooling roller conveyor 3 operates, it is purged by the spraying component 12. Furthermore, considering the differences in the lateral residual water distribution of the cooled steel, the length of the front arm of the X-shaped nozzle 11 is designed to be shorter than the length of the rear arm, and the angle between the front arms is... For example, 115°-155° Figure 2As shown in the embodiment, the included angle between the forearms is 140°. This design increases the blowing area and blowing intensity of the middle part of the steel, and also reasonably sets the blowing situation on both sides through the included angle, which helps to blow away residual water to both sides and optimizes the overall blowing effect.

[0055] At the same time, such as Figure 1 As shown, when the purging assembly 1 is arranged at the beginning of the cooling section, the included angle between the forearms of the X-shaped nozzle 11 faces inward into the cooling section. This arrangement fully utilizes the excellent water-blocking function of the purging assembly 1, blowing the cooling water into the cooling section and preventing the cooling water from flowing back into adjacent cooling sections or other process sections. This improves the cooling accuracy of a single cooling section and the precision control of the entire production line. When the purging assembly 1 is arranged at the end of the cooling section, the included angle between the forearms of the X-shaped nozzle 11 faces inward into the cooling section. This arrangement also utilizes the unique "X"-shaped nozzle structure, increasing the number of spraying components 12 within a certain range in the middle, increasing the purging area and purging intensity. When combined with the cooling roller conveyor 3, it can effectively clean residual water and oxide scale from the steel surface, balance the uniformity of transverse cooling of the steel, and ensure its surface quality.

[0056] In some embodiments, refer to Figure 3 The cross-sectional view shows that the X-type nozzle 11 includes an external sealing pipe 111 connected to the injection component 12 and an internal flow equalization pipe 112 with flow equalization holes 1121 on its wall. The size, shape, and number of flow equalization holes can be set according to production needs, air supply conditions, and flow equalization effect. When the X-type purging device is running, the internal flow equalization pipe 112 is connected to the air supply component 2, forming a flow equalization chamber with the external sealing pipe through the flow equalization holes 1121. Compressed air enters the internal flow equalization pipe 112 through the air supply component 2, then enters the flow equalization chamber through the flow equalization holes 1121, and finally is ejected through the injection component 12. This flow equalization structure design can reduce airflow non-uniformity, improve gas flow stability, and play a role in stabilizing and equalizing flow. On the other hand, the flow equalization holes can reduce gas resistance in the pipeline, reduce pressure loss, and ensure purging effect. In addition, when the air supply component provides high-pressure water, water hammer may occur in the nozzle, which is a pressure shock wave caused by a sudden change in water flow velocity. The design of the flow equalization orifice can reduce this sudden velocity change, reduce the risk of water hammer, and ensure that the pressure distribution of the entire system is uniform, avoiding excessive local pressure that could damage the equipment.

[0057] The spraying component can typically be a nozzle, air hole, or air blowing section, etc. In some embodiments, such as... Figure 1 and Figure 4As shown, the spraying component 12 is a nozzle 12-1 that is inclined on the X-shaped nozzle 11. When the purging assembly 1 is arranged at the beginning of the cooling section, the inclination angle of the nozzle 12-1 is set in the running direction of the cooling roller conveyor 3. That is, all the nozzles 12-1 are set to be inclined in the forearm direction of the X-shaped nozzle 11 and combined with the X-shaped nozzle 11 to ensure the coverage of the transverse purging. Moreover, the specific inclination direction is conducive to blowing the cooling water into the cooling section, avoiding affecting the production of adjacent process sections, and achieving the purpose of water blocking. At the same time, the angle between the nozzle 12-1 and the vertical plane is set to 10°-50°. This is to meet the requirements of different production needs for the spray angle and achieve a better water blocking effect. When the purging assembly 1 is arranged at the end of the cooling section, the tilt angle of the nozzle 12-1 is set against the running direction of the cooling roller 3, and the angle between the nozzle 12-1 and the vertical plane is 10°-50°. This design also refers to the arrangement of the X-type nozzle. The reverse purging of the nozzle 12-1 can more effectively remove residual water or oxide scale adhering to the roller. Similarly, the flexible setting of the angle between the nozzle 12-1 and the vertical plane also improves the adaptability of the purging device.

[0058] In some embodiments, in addition to conventional anti-collision measures such as protective plates, the purging assembly can also use a protective ring, such as... Figure 5 and Figure 6 As shown, the purging assembly 1 includes several annular members 13 with inner and outer rings arranged at intervals between 2-6 spray members 12. To ensure protection of the X-type nozzle, at least one annular member 13 should be provided at each end of the forearm and the rear arm to protect the purging assembly 1. Wherein:

[0059] The inner arc of the annular component 13 connects to the outer wall of the X-shaped nozzle 11, and the diameter of the arc matches the diameter of the outer wall of the X-shaped nozzle 11. Simultaneously, to provide all-around protection for the purging assembly, the length and width of the annular component are greater than the corresponding transverse and longitudinal dimensions of the combined X-shaped nozzle and spraying component, ensuring that the annular component can withstand most impacts during actual production. It should be noted that with the continuous advancement of cooling and purging technology, to improve the purging effect, in some embodiments, 1-3 rows of nozzles or air holes are typically arranged transversely on the nozzle; that is, each spraying component contains 1-3 transversely arranged nozzles or air holes. Therefore, when designing a protective annular component, the spatial dimensions of the overall combination of the nozzle and spraying component should be considered. Figure 6 In the embodiment shown, the length of the annular member 13 is greater than the longitudinal length of the X-type nozzle 11 and the nozzle 12-1 combined, and the width is greater than the lateral width of the X-type nozzle 11 and the nozzle 12-1.

[0060] In some embodiments, refer to Figure 5The annular component 13-1 has an opening, the width of which is equal to the diameter of the inner arc. The annular component 13-1 can be directly fixed to the X-shaped nozzle 11 through the opening. With this opening, the annular component does not need to be inserted through one end of the X-shaped nozzle and then fixed in a suitable position during installation. Instead, it can be directly fixed to the appropriate position of the nozzle through the opening, making installation and disassembly more convenient. Furthermore, due to the arrangement of the hot rolling device and the purging device, collisions mostly occur on the sides and bottom. When the opening is located on the upper part of the annular component, it increases the convenience of operation without reducing the protection of the sprayed component. In addition, when the opening is located on the side of the annular component, it can be used to install on purging devices with more complex shapes to achieve unitized and precise protection of the sprayed component.

[0061] In some embodiments, such as Figure 1 , Figure 5 and Figure 6 As shown, the purging device also includes: a fixing component 5, used to arrange the purging component 1 above the cooling roller conveyor 3; and an adaptive angle adjustment component 6, arranged in pairs at both ends of the purging component 1, which further protects the purging component 1 and adjusts the purging angle by coordinating the movement of the purging component 1. Wherein:

[0062] like Figure 6 As shown, the adaptive angle adjustment component 6 includes a rotatable shaft 61, a bushing 62, a connecting member 63, and a connecting seat 64. Under certain force conditions, the rotatable shaft 61 can rotate 360° within the bushing 62. The connecting member 63 is connected to both the rotatable shaft 61 and the purge assembly 1 to correlate their movements, ensuring that the rotatable shaft 61 can adjust its angle accordingly with the purge assembly 1 during rotation. The bushing 62 is fixed to the connecting seat 64, providing a stable center of rotation for the rotatable shaft 61 and ensuring freedom of movement. The connecting seat 64 is mounted on the fixed component 5, providing a stable support point for the entire adaptive angle adjustment component 6 and ensuring structural stability during impacts.

[0063] When an impact occurs, the rotatable shaft 61, which is connected to the purging assembly 1 via the connecting member 63, is simultaneously subjected to the impact force. Since the impact force is much greater than the combined weight of the purging assembly 1 and the connecting member 63 during steel production (ignoring the effects of air resistance, etc.), the rotatable shaft 61 can convert the impact force into rotational power through its spin mechanism, effectively dispersing and absorbing the impact energy, thereby reducing the direct impact on the purging assembly 1 and significantly improving the equipment's protective capability. Furthermore, due to the use of the adaptive angle adjustment device in this application, the impact resistance of the protective plates, protective rings, and other protective devices on the purging component itself can be appropriately reduced, saving production costs.

[0064] In some embodiments, the adaptive angle adjustment component 6 further includes a positioning pin 65. The rotatable shaft 61 is connected to the associated member 63 via the positioning pin 65 to ensure the relative position between the components. When a collision occurs, the rotatable shaft 61 can move together with the blowing component 1. Furthermore, the positioning pin can be used to set the angle between the associated member and the blowing component relative to the rotatable shaft after combination, so as to flexibly adjust the spray angle of the blowing component according to actual production needs, giving the device stronger adaptability. (Refer to...) Figure 6 In this embodiment, the positioning pin 65 also has an anti-unintended rotation locking mechanism. That is, after the angle is set by the positioning pin 65, the combination of the connecting part 63 and the purging assembly 1 can be stabilized at the set angle, which can avoid unintended rotational deviation caused by gravity or external vibration, and ensure the accuracy and consistency of the spray angle. In addition, when subjected to impact, due to the large impact force when producing steel, the force on the rotatable shaft 61 can break through the locking limit, adaptively rotate, absorb and disperse the impact force, and reduce the damage to the equipment caused by the impact.

[0065] In some embodiments, the connector 64 is detachably mounted on the fixing component 5, and the fixing component 5 has multiple connector mounting positions at different heights. This arrangement facilitates the adjustment of the height of the purging component according to production conditions. On the other hand, the detachable mounting also facilitates the subsequent maintenance of the purging component and the adaptive angle adjustment component.

[0066] In some embodiments, refer to Figure 1 The gas supply component 2 includes a gas storage tank 21, a connecting pipe 22, and a control component 23. The control component 23 includes a central control 231 and individual controls 232. The connecting pipe 22 is used to connect the gas storage tank 21 to the purging component 1 and to supply compressed gas to the injection component 12. The control component 23 is involved in the adjustment of parameters such as compressed gas flow rate, velocity, and pressure. Specifically, the central control 231 is used to control the opening and closing of all purging components 1 in a single cooling section, and the individual controls 232 are used to control the opening and closing of each purging component 1. Through this refined and unitized control, the purging accuracy is improved.

[0067] In some embodiments, the gas supply assembly can supply air, water, or heated gas. This takes into account different practical production needs. For example, when heated compressed air is provided, it helps to accelerate the removal of residual water from the steel surface and can dry the surface, thereby improving the surface quality of the steel and production efficiency to some extent.

[0068] In some embodiments, when the number of purging components N > 1, the air supply component can supply both air and water simultaneously. This is mainly because, in actual production, the cooled steel plate still has a high temperature, and the purging components are easily exposed to high temperatures for a long time, which can easily lead to oxidation, deformation, and other problems. In order to extend the service life of the purging device, the temperature of the purging components can be reduced by circulating cooling water to prevent them from being burned.

[0069] In some embodiments, refer to Figure 5 The forearm end of the X-type nozzle 11 also has a protective arc-shaped end cap 113. Due to the unique structure and arrangement of the X-type nozzle, when the thickness or local thickness of the rolled steel is too large, the two ends of its forearm are more likely to collide. The arc-shaped end cap design can absorb the impact force to a certain extent, reducing the probability of deformation or damage to the X-type nozzle. On the other hand, it can also make the cleaning and maintenance of the X-type nozzle more convenient.

[0070] In some embodiments, the width between the forearms of the X-shaped nozzle is W. F The width of the cooling roller conveyor is W C Where: 200mm≤W F ≤1 / 2W C .like Figure 2 As shown in the embodiment, the width W between the forearms of the X-type nozzle 11 F The width is 694mm, and the applicable cooling roller conveyor width is 3W. C The length and angle of the X-type nozzle forearm are designed to balance the unevenness of the residual water in the steel. In fact, compared with the two sides of the cooling roller, the middle part is more likely to accumulate more residual water. Therefore, in order to improve the purging effect in the middle part, the width between the forearms of the X-type nozzle should be within a reasonable range so that the device can improve the purging intensity and ensure the uniformity of residual water purging.

[0071] In some embodiments, the width of the X-shaped nozzle is W, and the width of the cooling roller conveyor is W. C The width of the steel after cooling is W. S Among them, the width of the X-type nozzle should meet W S ≤W<W C This ensures full coverage of the transverse blowing range; the number and spacing of the spray components need to be set according to the width of the cooling roller conveyor, production requirements, and production costs; for example... Figure 2 As shown in the embodiment, the width W of the X-type nozzle 11 is 3526 mm, and the applicable cooling roller conveyor 3 has a width W. C The width of the steel after cooling is 3500mm, which can be 5000mm. The spacing of the spraying components 12 is 70mm. This arrangement combines actual production line cost control with consideration of the product's requirements for the purging effect. The arrangement of this embodiment can achieve lateral purging coverage of the cooling roller channel 3.

[0072] like Figure 3 As shown, the spraying component is a detachable cylindrical nozzle 12-11. The cylindrical nozzle 12-11 includes a fixed part 12-111 and a detachable part 12-112. The fixed part 12-111 is fixedly installed on the X-type nozzle 11. This detachable structure provides convenience for maintenance and replacement, reducing subsequent maintenance costs. Simultaneously, this design facilitates regular nozzle inspection and optimization, ensuring efficient operation and adaptability of the production line. Furthermore, the detachable structure of a single nozzle allows for flexible control of nozzle opening and closing; that is, the number of nozzles open on the X-type nozzle forearm can be flexibly controlled to meet the purging needs of steel plates of different widths. In some embodiments, the aforementioned fixed installation can be achieved by welding, and the tilt angle of the cylindrical nozzle 12-11 is pre-set during welding, unlike conventional nozzles where the angle needs to be corrected individually. Figure 6 As shown in the embodiment, the combination of cylindrical nozzles 12-11 and adaptive angle control components 6 can flexibly and holistically adjust the blowing angle, ensuring the stability of the blowing results.

[0073] With the continuous advancement of cooling and purging technology, in some embodiments, the number of cylindrical nozzles arranged laterally on the X-shaped nozzle is 1-3. By adjusting parameters such as the height, tilt angle, and number of the lateral nozzles on the X-shaped nozzle, the purging effect within a certain range can be improved.

[0074] The detachable air outlet component of the cylindrical nozzle can be selected from different types according to actual production requirements, including circular, fan-shaped, or tongue-shaped. In some embodiments, such as Figure 3 As shown, the air outlet of the cylindrical nozzle 12-11 is circular. Through the cooperation of its fixed part 12-111 and detachable part 12-112, the accuracy of the spray direction during purging can be guaranteed, and the degree of control over the purging process can be increased.

[0075] In some embodiments, the purging device can be arranged simultaneously with a conventional transverse purging device within the same cooling section, providing dual optimization of production efficiency and cleaning effect. For example, considering the layout of the entire production line and the rational use of space, a conventional transverse purging device can be arranged at the beginning of the cooling section to block water and prevent backflow into adjacent process sections; while the X-type purging device, due to its better purging effect, is more suitable for arrangement at the end of the cooling section to perform in-depth processing on products with higher purging requirements, thereby achieving optimal production configuration.

[0076] The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A post-rolling cooling X-type purging method, characterized in that, A purging device suitable for use with a cooling roller conveyor, the purging device comprising: an air supply assembly and N purging assemblies, where N≥1; The purging assembly includes an X-shaped nozzle and a spraying component disposed above and parallel to the cooling roller conveyor. The length of the forearm of the X-shaped nozzle is shorter than the length of the rear arm, and the included angle between the forearms is 115°-155°. The purging method includes: When the purging assembly is arranged at the beginning of the cooling section, the included angle between the forearms of the X-shaped nozzle faces into the cooling section; When the purging assembly is positioned at the end of the cooling section, the included angle between the forearms of the X-shaped nozzle faces inward toward the cooling section.

2. The X-type purging method according to claim 1, characterized in that, The X-type nozzle includes an external sealing pipe that communicates with the injection component and an internal flow equalization pipe with flow equalization holes on the pipe wall.

3. The X-type purging method according to claim 1, characterized in that, The jetting component is a nozzle obliquely disposed on the X-shaped nozzle; the purging method includes: When the purging assembly is arranged at the beginning of the cooling section, the inclination angle of the nozzles is set along the running direction of the cooling roller conveyor, and the angle between the nozzles and the vertical plane is 10°-50°. When the purging assembly is arranged at the end of the cooling section, the inclination angle of the nozzles is set against the running direction of the cooling roller conveyor, and the angle between the nozzles and the vertical plane is 10°-50°.

4. The X-type purging method according to claim 1, characterized in that, The purging assembly also includes M annular members with inner and outer rings spaced apart between the spraying members, M≥4, the inner ring of which is partially connected to the outer wall of the X-shaped nozzle, and the diameter of the arc is adapted to the diameter of the outer wall of the X-shaped nozzle. The length of the annular component is greater than the longitudinal length corresponding to the combination of the X-shaped nozzle and the spraying component, and the width of the annular component is greater than the transverse width corresponding to the combination of the X-shaped nozzle and the spraying component; the purging method includes: The annular components are arranged at intervals between 2-6 spraying components.

5. The X-type purging method according to claim 4, characterized in that, The annular component has an opening, the width of which is equal to the arc diameter of the inner ring. The annular component can be directly fixed to the X-shaped nozzle through the opening.

6. The X-type purging method according to claim 1, characterized in that, The purging device also includes a fixing component and a pair of adaptive angle adjustment components arranged at both ends of the purging component. The adaptive angle adjustment component includes a rotatable shaft, a bushing, an associate, and a connecting seat. Under certain stress conditions, the rotatable shaft can rotate 360° within the bushing; The connector is mounted on the fixing assembly; the purging method includes: The connecting element is connected to both the rotatable shaft and the purging assembly to coordinate the movement of both.

7. The X-type purging method according to claim 6, characterized in that, The adaptive angle adjustment component further includes a positioning pin, and the rotatable shaft is connected to the associated component via the positioning pin; the purging method includes: The positioning pin sets the angle of the associated component and the purging assembly relative to the rotatable axis after they are combined; and the positioning pin has an anti-unintended rotation locking mechanism to ensure that the combination of the associated component and the purging assembly is stable at the set angle.

8. The X-type purging method according to claim 6, characterized in that, The connector is detachably mounted on the fixing component, and the fixing component has multiple connector mounting positions at different heights.

9. The X-type purging method according to any one of claims 1-8, characterized in that, The gas supply assembly includes a gas storage tank, connecting pipes, and control components; the control components include a central control and individual controls; the method includes: The master controller is used to control the opening and closing of the N purging assemblies, and the individual controller is used to control the opening and closing of each of the purging assemblies.

10. The X-type purging method according to any one of claims 1-8, characterized in that, The gas supply component can supply gas, water, and heated gas.

11. The X-type purging method according to claim 10, characterized in that, When the number of purging components N > 1, the air supply component can supply both air and water simultaneously.

12. The X-type purging method according to any one of claims 1-8, characterized in that, The end of the X-shaped nozzle forearm has a protective arc-shaped end cap.

13. The X-type purging method according to any one of claims 1-8, characterized in that, The forearm width of the X-shaped nozzle is W. F The width of the cooling roller channel is W. C Where: 200 mm ≤ W F ≤1 / 2W C .

14. The X-type purging method according to any one of claims 1-8, characterized in that, The width of the X-shaped nozzle is W, and the width of the cooling roller conveyor is W. C The width of the steel after cooling is W. S , where: W S ≤W<W C The number and spacing of the spray components are set according to the width of the cooling roller conveyor, production requirements, and production costs.

15. The X-type purging method according to any one of claims 1-8, characterized in that, The spraying component is a detachable cylindrical nozzle, which includes a fixed part and a detachable part. The fixed part is fixedly installed on the X-shaped nozzle.

16. The X-type purging method according to claim 15, characterized in that, The number of cylindrical nozzles arranged laterally on the X-shaped nozzle is 1-3.

17. The X-type purging method according to claim 16, characterized in that, The detachable air outlet component of the cylindrical nozzle is circular, fan-shaped, or tongue-shaped.

18. The X-type purging method according to any one of claims 1-8, characterized in that, The purging method includes: The purging device can be arranged in the same cooling section as a conventional transverse purging device.

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