Thermal shock stable type water gap structure

Abstract

The utility model discloses a thermal shock stable type nozzle structure, and particularly relates to the field of lower nozzles, the thermal shock stable type nozzle structure comprises a first connecting pipe, a first external thread is arranged on the outer side of the first connecting pipe, and a fixing assembly is arranged on the outer side of the first connecting pipe; the fixing assembly comprises a fixing ring, the fixing ring is installed on the outer side of the first connecting pipe, a first internal thread is formed in the fixing ring, and a second connecting pipe is arranged on the inner side of the fixing ring when a second internal thread is formed in the fixing ring. Compared with the prior art, the fixing assembly is arranged, the first connecting pipe and the second connecting pipe are in threaded connection through the fixing ring, the fixing support plate is wrapped on the outer sides of the first connecting pipe and the second connecting pipe through the two internal thread fixing rings, and therefore when the temperature changes sharply, the first connecting pipe and the second connecting pipe can be fixed conveniently. The stability of the first connecting pipe and the second connecting pipe can be kept, deformation or damage caused by thermal stress is reduced, and the thermal shock stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water outlets, and more specifically, to a water outlet structure with thermal shock stability. Background Art

[0002] The water outlet is mainly used to control the flow rate and velocity of molten steel. It is required to have good erosion resistance at high temperatures, good volume stability at high temperatures, and a certain degree of self-dissolution. During the use of the water outlet, the static pressure of the molten steel in the ladle decreases as the amount of molten steel decreases, but the pouring rate is required to remain similar to that at the initial stage of pouring. This requires the material to have a corresponding dissolution rate to ensure a stable flow of molten steel.

[0003] During the use of the stopper water outlet in the market, since the stopper water outlet needs to be immersed in the molten steel for adjustment work, the requirements for thermal shock stability and connection firmness of the stopper water outlet are relatively high. However, the existing stopper water outlets are prone to connection loosening during continuous use, resulting in inaccurate control of the molten steel flow rate and affecting production and processing. Therefore, we propose a stopper water outlet with good thermal shock stability.

[0004] After retrieval, the Chinese patent with the application number CN202321574384.9 discloses a stopper water outlet with good thermal shock stability. By setting a main body mechanism, sleeve bricks, a plug head, a protective sleeve and a fixing mechanism, this main body mechanism can be assembled and installed. Compared with the traditional integral structure, the combined split type is more convenient for use, maintenance and replacement.

[0005] When the above-mentioned stopper water outlet with good thermal shock stability is actually used, the water outlet is prone to position deviation during the thermal shock process, resulting in poor flow of molten steel. At the same time, it is difficult for the water outlet to maintain a stable shape, resulting in concentrated thermal stress and increasing the risk of explosion. Summary of the Utility Model

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a water outlet structure with thermal shock stability to solve the problems raised in the above background art.

[0007] To achieve the above object, the utility model provides the following technical solutions:

[0008] A water outlet structure with thermal shock stability, including a first connecting pipe, an external first external thread is provided on the outer side of the first connecting pipe, and a fixing component is arranged on the outer side of the first connecting pipe;

[0009] The fixing component includes a fixing ring, the fixing ring is installed on the outer side of the first connecting pipe, a first internal thread is provided inside the fixing ring, when a second internal thread is provided inside the fixing ring, a second connecting pipe is arranged inside the fixing ring, and a second external thread is provided on the outer side of the second connecting pipe;

[0010] Both the outer sides of the first connecting pipe and the second connecting pipe are fixedly connected with fixed support plates. The outer sides of the fixed support plates are provided with third external threads, and the outer sides of the third external threads are screwed with internal thread fixing rings. The outer sides of the fixing rings are provided with a plurality of heat dissipation holes. The first external thread is in threaded connection with the first internal thread, the second internal thread is in threaded connection with the second external thread, and both the first connecting pipe and the second connecting pipe are fixedly welded to one end of the fixed support plate.

[0011] By adopting the above technical solution: The first connecting pipe and the second connecting pipe can be stably connected together by threads through the fixing ring, and then the fixed support plate is attached to the outer sides of the first connecting pipe and the second connecting pipe by using the internal thread fixing ring, which is convenient for the first connecting pipe and the second connecting pipe to remain relatively stable during thermal shock. At the same time, the plurality of heat dissipation holes can dissipate the heat of the first connecting pipe and the second connecting pipe to the outside, thereby reducing the thermal stress of the first connecting pipe and the second connecting pipe.

[0012] As a further description of the above technical solution: Linings are installed on the inner sides of both the first connecting pipe and the second connecting pipe. The top end of the first connecting pipe is fixedly connected with a connecting ring, and the upper surface of the connecting ring is fixedly connected with a nozzle body. A bowl-shaped opening is provided inside the nozzle body. The inner sides of both the first connecting pipe and the second connecting pipe are sleeved and fixed with the linings, and the connecting ring is fixedly welded to the upper surface of the first connecting pipe.

[0013] By adopting the above technical solution: The linings help to relieve the thermal stress generated by the first connecting pipe and the second connecting pipe during temperature changes, thereby improving their thermal shock resistance. The bowl-shaped opening can guide the molten steel to smoothly enter the inside of the nozzle.

[0014] As a further description of the above technical solution: One side of the nozzle body is communicated with an argon delivery pipe, one end of the argon delivery pipe is communicated with a split ring groove, and a plurality of argon blowing holes are communicated with the inside of the split ring groove. All the plurality of argon blowing holes penetrate through the nozzle body and are communicated with the inside of the nozzle body.

[0015] By adopting the above technical solution: The argon can be delivered to the inside of the split ring groove through the argon delivery pipe, which is convenient for the split ring groove to deliver the argon to the plurality of argon blowing holes, so that argon can be blown to the molten steel.

[0016] The technical effects and advantages of the present utility model:

[0017] 1. By setting the fixing component, compared with the prior art, the first connecting pipe and the second connecting pipe are connected by threads using the fixing ring, and then the fixed support plate is wrapped around the outer sides of the first connecting pipe and the second connecting pipe by using two internal thread fixing rings, which is convenient for maintaining the stability of the first connecting pipe and the second connecting pipe when experiencing rapid temperature changes, reducing deformation or damage caused by thermal stress, and improving the thermal shock stability;

[0018] 2. By setting the argon input pipe, the shunt ring groove and the argon blowing holes, compared with the prior art, the argon gas can be transported to the inside of the shunt ring groove through the argon input pipe, which facilitates the shunt ring groove to transport the argon gas to a plurality of argon blowing holes, and facilitates blowing argon gas into the first connecting pipe and the second connecting pipe, so that the argon gas bubbles can adsorb and carry away non-metallic inclusions, thereby reducing the inclusion content in the molten steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0020] Figure 2 It is a schematic cross-sectional structure diagram of the first connecting pipe and the second connecting pipe of the present utility model.

[0021] Figure 3 It is a partial structural diagram of the connection part of the first connecting pipe of the present utility model.

[0022] Figure 4 It is a schematic diagram of the internal structure of the nozzle body of the present utility model.

[0023] Figure 5 It is a schematic diagram of the second connecting pipe of the present utility model.

[0024] Figure 6 It is a schematic diagram of the fixing ring structure of the present utility model.

[0025] The reference numerals are: 1. First connecting pipe; 2. First external thread; 3. Fixing ring; 4. First internal thread; 5. Second internal thread; 6. Second connecting pipe; 7. Second external thread; 8. Fixed support plate; 9. Third external thread; 10. Internal thread fixing ring; 11. Heat dissipation holes; 12. Lining; 13. Connecting ring; 14. Nozzle body; 15. Bowl mouth; 16. Argon input pipe; 17. Shunt ring groove; 18. Argon blowing holes. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] The embodiment of the present application discloses a nozzle structure with thermal shock stability, including a first connecting pipe 1, a first external thread 2 is provided on the outer side of the first connecting pipe 1, and a fixing component is arranged on the outer side of the first connecting pipe 1;

[0028] The fixing component includes a fixing ring 3 which is installed outside the first connecting pipe 1. A first internal thread 4 is provided inside the fixing ring 3. When a second internal thread 5 is provided inside the fixing ring 3, a second connecting pipe 6 is arranged inside the fixing ring 3, and a second external thread 7 is provided on the outside of the second connecting pipe 6;

[0029] Fixing support plates 8 are fixedly connected to the outside of both the first connecting pipe 1 and the second connecting pipe 6. A third external thread 9 is provided on the outside of the fixing support plate 8, and an internally threaded fixing ring 10 is screwed to the outside of the third external thread 9. A plurality of heat dissipation holes 11 are provided on the outside of the fixing ring 3. The first external thread 2 is in threaded connection with the first internal thread 4, and the second internal thread 5 is in threaded connection with the second external thread 7. Both the first connecting pipe 1 and the second connecting pipe 6 are fixedly welded to one end of the fixing support plate 8. By driving the second connecting pipe 6 to rotate at the bottom of the fixing ring 3, it is convenient for the second internal thread 5 to be in threaded connection with the second external thread 7, so that the second connecting pipe 6 can be fixed to the fixing ring 3. Then, by using the fixing ring 3 to rotate at the bottom end of the first connecting pipe 1, the first internal thread 4 is in threaded connection with the first external thread 2, which is convenient for fixing the first connecting pipe 1 and the fixing ring 3. Through the fixing ring 3, the first connecting pipe 1 and the second connecting pipe 6 can be connected and fixedly supported. Then, by using the threaded connection between the internally threaded fixing ring 10 and the third external thread 9, it is convenient for the internally threaded fixing ring 10 to contract one end of the fixing support plate 8, so that one ends of the two fixing support plates 8 are attached to the outside of the first connecting pipe 1 and the second connecting pipe 6, which is convenient for maintaining the stability of the first connecting pipe 1 and the second connecting pipe 6 when experiencing a rapid temperature change and reducing deformation or damage caused by thermal stress.

[0030] Refer to Figure 2 and 3 As shown, linings 12 are installed inside both the first connecting pipe 1 and the second connecting pipe 6. A connecting ring 13 is fixedly connected to the top end of the first connecting pipe 1. A nozzle body 14 is fixedly connected to the upper surface of the connecting ring 13. A bowl-shaped opening 15 is provided inside the nozzle body 14. The linings 12 are sleeved and fixed to the inside of both the first connecting pipe 1 and the second connecting pipe 6. The connecting ring 13 is fixedly welded to the upper surface of the first connecting pipe 1. The lining 12 helps to relieve the thermal stress generated by the first connecting pipe 1 and the second connecting pipe 6 during temperature changes. The connecting ring 13 can provide a supporting force for the connection between the nozzle body 14 and the first connecting pipe 1 at the bottom of the nozzle body 14. Through the bowl-shaped opening 15, the molten steel can be smoothly guided into the nozzle, ensuring smooth flow of the molten steel, thereby improving the casting quality.

[0031] Refer to Figure 4As shown, one side of the nozzle body 14 is connected to an argon supply pipe 16. One end of the argon supply pipe 16 is connected to a distribution ring groove 17. The inner side of the distribution ring groove 17 is connected to a plurality of argon blowing holes 18. The plurality of argon blowing holes 18 all penetrate through the nozzle body 14 and are connected to the inner side of the nozzle body 14. Through the argon supply pipe 16, argon can be diverted into the distribution ring groove 17, facilitating the plurality of argon blowing holes 18 to annularly convey argon to the molten steel inside the nozzle body 14, contributing to the homogenization of the molten steel composition and temperature, improving the overall quality of the molten steel. At the same time, it can reduce the inclusion content in the molten steel and improve the purity of the molten steel.

[0032] The working principle of the present utility model: The present utility model designs a nozzle structure with thermal shock stability. The specific structure is as shown in the attached Figures 1-6 In the present technical solution, through the mutual cooperation between various structures, when continuous casting billet molten steel is required, first insert one end of the second connecting pipe 6 into the fixing ring 3 and rotate the second connecting pipe 6 so that the second external thread 7 is fixed to the first internal thread 4 by threading. Then insert the bottom end of the first connecting pipe 1 into the fixing ring 3 and rotate the fixing ring 3 so that the first internal thread 4 is fixed to the second connecting pipe 6 by threading. Use the connection between the fixing ring 3, the first connecting pipe 1, and the second connecting pipe 6 for fixation and protection. Then rotate the internal thread fixing ring 10 towards one end of the fixing support plate 8. Through the threaded connection between the inside of the internal thread fixing ring 10 and the third external thread 9, it is convenient for the internal thread fixing ring 10 to fix one end of the fixing support plate 8. The fixing support plate 8 can be used to protect the outside of the first connecting pipe 1 and the second connecting pipe 6, which is beneficial to maintaining stability during the thermal shock process. When the molten steel flows inside the first connecting pipe 1 and the second connecting pipe 6, connect one end of the argon supply pipe 16 to the argon blowing device. Through the argon supply pipe 16, argon can be conveyed into the distribution ring groove 17, facilitating the distribution ring groove 17 to divert argon into the plurality of argon blowing holes 18. The plurality of argon blowing holes 18 can blow the molten steel on the inner wall of the first connecting pipe 1 inside the first connecting pipe 1, which can remove the slag inside the first connecting pipe 1 and the second connecting pipe 6, thus keeping the nozzle unobstructed.

[0033] Among them, in the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments of the present disclosure are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0034] The content not described in detail in the specification belongs to the well-known prior art to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited. Conventional equipment can be used. In the present technical solution, the electrical control components not mentioned are not shown in the drawings because they belong to the prior art and will not be described herein again;

[0035] Finally: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A thermal shock-stable nozzle structure, comprising a first connecting pipe (1), characterized in that: A first external thread (2) is formed on the outside of the first connecting pipe (1), and a fixing component is arranged on the outside of the first connecting pipe (1); The fixing assembly comprises a fixing ring (3), the fixing ring (3) being mounted on the outside of the first connecting tube (1), the fixing ring (3) being provided with a first internal thread (4), the fixing ring (3) being provided with a second internal thread (5), the fixing ring (3) being provided with a second connecting tube (6) on the inside, and the second connecting tube (6) being provided with a second external thread (7); The first connecting tube (1) and the second connecting tube (6) are both fixedly connected to a fixed bracket plate (8) on their outer sides, a third external thread (9) is provided on the outer side of the fixed bracket plate (8), an internal thread fixing ring (10) is screwed to the outer side of the third external thread (9), and a plurality of heat dissipation holes (11) are provided on the outer side of the fixing ring (3).

2. The thermal shock stable nozzle structure according to claim 1, characterized in that: Liners (12) are installed on the inner sides of the first connecting pipe (1) and the second connecting pipe (6), and a connecting ring (13) is fixedly connected to the top end of the first connecting pipe (1).

3. The thermal shock stable nozzle structure according to claim 2, characterized in that: The upper surface of the connecting ring (13) is fixedly connected to a nozzle body (14), and a bowl mouth (15) is provided inside the nozzle body (14).

4. The thermal shock stable nozzle structure according to claim 3, characterized in that: One side of the nozzle body (14) is connected to an argon delivery pipe (16), and one end of the argon delivery pipe (16) is connected to a diversion annular groove (17).

5. The thermal shock stable nozzle structure according to claim 4, characterized in that: The inner side of the flow dividing annular groove (17) is connected to a plurality of argon blowing holes (18), and the plurality of argon blowing holes (18) all penetrate the nozzle body (14) and are connected to the inner side of the nozzle body (14).

6. The thermal shock stable nozzle structure according to claim 1, characterized in that: The first external thread (2) is threadedly connected to the first internal thread (4), the second internal thread (5) is threadedly connected to the second external thread (7), and the first connecting pipe (1) and the second connecting pipe (6) are both welded and fixed to one end of the fixed bracket plate (8).

7. The thermal shock stable nozzle structure according to claim 2, characterized in that: The inner sides of the first connecting pipe (1) and the second connecting pipe (6) are both sleeved and fixed to the inner liner (12), and the connecting ring (13) is welded and fixed to the upper surface of the first connecting pipe (1).

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