Annular protection device for cooling and purging

Abstract

The utility model discloses an annular protection device for cooling and purging, and belongs to the technical field of hot rolling cooling. The annular protection device is suitable for being installed on a spraying pipe to protect spraying components and comprises a plurality of annular components which are arranged between the spraying components at intervals and have a certain thickness, the size of the annular components is larger than the transverse and longitudinal size of the space formed after the spraying pipe and the spraying components are combined, and the spraying components within a certain range can be precisely protected. Compared with traditional methods of reinforcing protection plates on the periphery of a spraying component, forming holes in a bottom protection plate or embedding purging nozzles and the like, the annular protection device is high in flexibility and applicability, the production cost can be saved and the follow-up maintenance efficiency can be improved through the unitized design, meanwhile, the annular protection device can be compatible with different cooling purging devices, and the practicability is high. Good market application prospects are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of hot rolling cooling, and particularly relates to an annular protection device for cooling and purging. Background Art

[0002] After hot-rolled steel is cooled by methods such as laminar flow cooling and ultra-rapid cooling, a large amount of cooling water and scale residues will remain on the surface, which has a negative impact on the surface quality and performance of the steel. Usually, it is necessary to remove them through a specific purging device to ensure the stable cooling effect and production quality of the product. However, during the production of steel, to ensure the purging effect, the purging device often needs to be kept at a relatively close distance from the surface of the steel. This leads to the possibility of hitting the purging device when the thickness or local thickness of the rolled steel plate is too large, causing equipment damage. Therefore, whether it is a horizontal purging device arranged above the cooling roller table or a side spray purging device arranged beside the cooling roller table, corresponding protection devices need to be considered in the design and application to reduce the cost of equipment maintenance and replacement and ensure the continuity of the production process.

[0003] Currently, in the industry, methods such as strengthening the protection plate around the purging nozzle or air outlet, opening holes in the bottom guard plate or embedding the purging nozzle are mostly adopted. Patent application CN116772554A introduces a scheme of arranging an arc-shaped plate and a rectangular plate around the air outlet and additionally setting a protective outer rib plate on the arc-shaped plate; patent application CN109207688A proposes a method of setting an "L"-shaped anti-collision guard plate with long round holes on the bottom side plate outside the air supply pipe; patent application CN108070693B discloses a design of embedding small nozzles in the arc-shaped panel. However, these existing methods have a common problem: when a certain part of the purging device is damaged or deformed, the entire protection device needs to be replaced, which not only increases the maintenance cost but also prolongs the production interruption time. Therefore, it is urgent to develop a protection device with strong adaptability and easy maintenance to improve production efficiency and economic benefits. Summary of the Invention

[0004] In view of this, the present application provides an annular protection device for cooling and purging, mainly aiming to solve the problems of high maintenance cost and weak adaptability of the current purging protection device.

[0005] To achieve the above object, the technical solution provided by the present application is as follows:

[0006] An annular protection device for cooling and purging, suitable for being installed on a spray pipe to protect a spraying member, includes N annular members with a certain thickness arranged at intervals between the spraying members, where N≥2;

[0007] The length of the annular member is greater than the longitudinal length of the combination of the spray pipe and the spraying member, and the width of the annular member is greater than the transverse width of the combination of the spray pipe and the spraying member;

[0008] The annular member includes: an inner ring and an outer ring;

[0009] A partial arc of the inner ring is connected to the outer wall of the nozzle, and the diameter of the arc is adapted to the diameter of the outer wall of the nozzle.

[0010] In some embodiments, the injection member includes 1-3 nozzles or blow holes arranged horizontally on the nozzle, and the annular members are arranged at intervals between 2-6 injection members.

[0011] In some embodiments, the material and thickness of the annular member should ensure the strength requirements for anti-collision, and the thickness is less than 3 / 5 of the spacing between the injection members.

[0012] In some embodiments, the upper and lower parts of the outer ring of the annular member are arc lines, and the middle part is a transition line connecting the upper and lower parts;

[0013] In some embodiments, the width of the lower part of the outer ring of the annular member is less than the width of the upper part, and is greater than the lateral width of the corresponding position after the combination of the nozzle and the injection member.

[0014] In some embodiments, the annular member has an opening, and the width of the opening is equal to the diameter of the arc of the inner ring. The annular member can be directly fixed on the nozzle through the opening.

[0015] In some embodiments, a partial arc of the inner ring of the annular member is connected to the outer wall of the nozzle by welding, and the arc length of the connection part is ≥ 1 / 4 of the outer wall circumference of the nozzle. There is also an operation opening with a width less than the diameter of the outer wall of the nozzle on the inner ring arc of the annular member.

[0016] According to the above technical solution, a ring-shaped protection device for cooling and purging provided by the present application is composed of a plurality of independent annular members. Each annular member can be independently replaced, and can provide comprehensive protection for the injection members within a certain range. Through this modular design, not only the flexibility of the protection device is enhanced, it is convenient for the rapid replacement of individual damaged components, reduces the subsequent maintenance cost, improves the production efficiency and economic benefits; at the same time, the applicability of the protection device is also improved, it can be compatible with different cooling and purging devices, so that it can be more widely applied to various advanced cooling and purging technologies, and has good market application prospects.

[0017] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. Brief Description of the Drawings

[0018] The accompanying drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0019] Figure 1 is an installation schematic diagram of some embodiments of the present application;

[0020] Figure 2 is a structural schematic diagram of some embodiments of the present application;

[0021] Figure 3 is a structural schematic diagram of some other embodiments of the present application.

[0022] Explanation of reference numerals in the drawings:

[0023] 1 - Ring member; 2 - Nozzle; 3 - Nozzle orifice; 1-1 - Outer ring; 1-2 - Inner ring; 1-3 - Operation port; 1-4 - Opening. Detailed implementation manners

[0024] The following describes the embodiments of the present invention through specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. Among them, the drawings are only used for illustrative purposes, showing only schematic diagrams rather than actual diagrams, and should not be construed as a limitation to the present application; for those skilled in the art, it is understandable that some well-known structures or steps and their descriptions in the drawings may be omitted in order to better illustrate the embodiments of the present application.

[0025] In the description of the present application, it should be noted that the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "inner", "outer", "upper", "middle", "lower", etc. are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present disclosure. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0026] In the description of the present application, it should also be noted that unless otherwise clearly specified and defined, the terms "installation", "arrangement", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0027] The present application discloses a ring-shaped protection device for cooling and purging, which is suitable for being installed on a nozzle to protect a spraying member. The ring-shaped protection device includes N ring-shaped members with a certain thickness arranged at intervals between the spraying members, where N≥2, that is, at least two ring-shaped members are installed at both ends of the nozzle to protect the spraying member.

[0028] In some embodiments, referring to the Figure 1 , taking common components in the industry as an example, the nozzle is a circular tube 2, and the spraying member is a cylindrical nozzle 3. The ring-shaped protection device of this embodiment includes a plurality of ring-shaped members 1 with a certain thickness arranged at intervals between the nozzles 3. As Figure 2 shown in the structure diagram, the ring-shaped member includes an outer ring 1-1 and an inner ring 1-2. Combining Figure 1 , the inner ring 1-2 is used to be fixed on the circular tube 2, and a part of its arc is connected to the outer wall of the circular tube 2. The diameter of the arc is adapted to the outer wall diameter of the circular tube 2 to ensure a good fit during installation.

[0029] At the same time, in order to provide comprehensive protection for the spraying member, the length and width of the ring-shaped member should be greater than the transverse and longitudinal dimensions after the combination of the nozzle and the spraying member, so as to ensure that the ring-shaped member can withstand most of the impacts during actual production. It should be noted that with the continuous progress of technology in the field of cooling and purging, in order to improve the purging effect, in some embodiments, usually 1-3 rows of nozzles or blow holes can be arranged horizontally on the nozzle, that is: each spraying member includes 1-3 horizontally arranged nozzles or blow holes. Therefore, when designing the ring-shaped member with a protective function, the spatial dimensions after the overall combination of the nozzle and the spraying member should be considered. In this embodiment, the length of the ring-shaped member 1 is greater than the longitudinal length after the combination of the circular tube 2 and the nozzle 3, and the width is greater than the transverse width after the combination of the circular tube 2 and the nozzle 3.

[0030] The specific number of spraying members is generally determined according to the purging width and purging effect. Considering the anti-collision protection effect and production cost of the ring-shaped member, in some embodiments, it can usually be arranged between 2-6 spraying members. Figure 2 In the embodiment, the nozzles 3 are arranged in a single row, forming a 15° angle with the circular tube. The distance between the nozzles is 70mm. Each spraying member includes 1 nozzle. The ring-shaped members are arranged at intervals between 2 nozzles, effectively protecting them. And compared with the commonly used protection plates in the industry, the flexible selection of the number of ring-shaped members can also effectively reduce the material cost of the entire purging device.

[0031] For the convenience of installation, the thickness of the ring-shaped member should be less than 3 / 5 of the distance between the spraying members. After combining with the material, it should ensure the strength requirements for the anti-collision of the spraying member, and determine the actual application thickness of the ring-shaped member considering the comprehensive protection effect and material cost. As Figure 1As shown, in some embodiments, the thickness of the annular member 1 is less than the spacing of the nozzles 3, which is 5 - 35 mm. In addition, the upper and lower parts of the outer ring 1-1 of the annular member are arc lines, and the middle part is a transition line connecting the upper and lower parts. This is mainly because the arc lines can distribute the pressure acting on the protection device more evenly, reduce local stress concentration, and thus improve the durability and reliability of the protection device. At the same time, on the other hand, considering that the influence of the existence of the annular member on the purging effect of the spraying member should be minimized, therefore, as Figure 1 shown, in some embodiments, on the premise of ensuring the protection effect on the spraying member, the width of the lower part of the outer ring 1-1 of the annular member can be less than the width of the upper part and greater than the transverse width of the corresponding position after the combination of the circular tube 2 and the nozzle 3. This can not only save the material cost but also reduce the influence on the purging of the spraying member.

[0032] In some other embodiments, as Figure 3 shown, the annular member has an opening 1-4, and the width of the opening is equal to the diameter of the inner circle arc. Through the setting of the opening, when the annular member is installed, it does not need to be sleeved into one end of the spray pipe and then fixed at a suitable position, but can be directly fixed at a suitable position on the spray pipe through the opening, making the installation and disassembly more convenient and greatly improving the production efficiency. And, due to the layout of the hot rolling device and the purging device, the collision mostly occurs on the side and bottom. When the opening is located in the upper part of the annular member, it not only increases the operation convenience but also does not reduce the protection of the spraying member. In addition, when the opening is located on the side of the annular member, it can be applied to the purging device with a more complex shape to achieve unitized and precise protection of the spraying member.

[0033] In some embodiments, a part of the arc of the inner circle of the annular member is connected to the outer wall of the spray pipe by welding, and the arc length of the connection part is ≥ 1 / 4 of the outer wall circumference of the spray pipe to ensure the firmness and anti-collision of the connection. At the same time, there is an operation opening on the inner circle arc of the annular member with a width less than the outer diameter of the spray pipe outer wall to facilitate the welding operation.

[0034] The terms "comprising" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the present technical solution, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A cooling and purging annular protective device, suitable for being installed on a nozzle to protect the injection component, characterized in that: The protection device comprises N annular members with a certain thickness arranged between the injection members at intervals, N ≥ 2; The length of the annular member is greater than the longitudinal length of the nozzle and the injection member after they are combined, and the width of the annular member is greater than the transverse width of the nozzle and the injection member after they are combined; The annular member comprises: an inner ring and an outer ring; The partial arc of the inner circle is connected to the outer wall of the nozzle, and the diameter of the arc is matched with the diameter of the outer wall of the nozzle.

2. The annular protection device according to claim 1, characterized in that: The injection component includes 1-3 nozzles or blowing holes arranged transversely on the nozzle pipe, and the annular component is arranged at intervals between 2-6 injection components.

3. The annular protection device according to claim 1, characterized in that: The material and thickness of the annular component should ensure the anti-collision strength requirement, and the thickness should be less than 3 / 5 of the spacing between the injection components.

4. The annular protection device according to claim 1, characterized in that: The upper and lower parts of the outer ring of the annular component are arc lines, and the middle part is a transition line connecting the upper part and the lower part.

5. The annular protection device according to claim 4, characterized in that: The width of the lower part of the outer ring of the annular component is smaller than the width of the upper part, and is larger than the transverse width of the corresponding position after the nozzle and the injection component are combined.

6. The annular protection device according to claim 1, characterized in that: The annular component has an opening, the width of the opening is equal to the arc diameter of the inner ring, and the annular component can be directly fixed on the nozzle through the opening.

7. The annular protection device according to any one of claims 1 to 6, characterized in that: The partial arc of the inner circle of the annular component is connected to the outer wall of the nozzle by welding, the arc length of the connected part is ≥ 1 / 4 of the circumference of the outer wall of the nozzle, and the inner circle arc of the annular component also has an operating port with a width smaller than the diameter of the outer wall of the nozzle.

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