Forging type oxygen lance nozzle

Abstract

The invention relates to the technical field of forging type oxygen lance nozzles, and discloses a forging type oxygen lance nozzle which comprises a nozzle outer shell, a nozzle inner shell, a nozzle inner shell, a nozzle inner shell and a nozzle outer shell. The inner isolation assembly is coaxially arranged in the spray head outer shell and divides the containing cavity into a heat conduction oil circulation cavity on the outer layer and a coolant circulation cavity on the inner layer; the oxygen conveying channel is arranged at the axis position of the inner isolation assembly in a penetrating mode, the outlet end of the oxygen conveying channel extends to the oxygen spraying opening of the spray head outer shell, and a coolant flowing gap is formed between the oxygen conveying channel and the inner isolation assembly. The forging type oxygen lance nozzle aims to solve the problems that due to the fact that heat at an oxygen nozzle of an existing forging type oxygen lance nozzle is not evenly distributed, cooling water contains impurities and is prone to generating scale, heat conduction efficiency is reduced, local temperature is too high and even meltdown is caused, the service life is short, and maintenance frequency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of forging type oxygen lance nozzle, in particular to a forging type oxygen lance nozzle. BACKGROUND

[0002] The forging type oxygen lance nozzle is a key component in converter steelmaking, the main body of which is usually made of copper plate or cast blank by forging and pressing, and the end bottom is forged and pressed by a special die to extrude the length of the spray hole part. The material is mostly pure copper with a copper content of more than 99.9%. The defects such as slag inclusion and impurities of cast copper are solved. After forging and pressing, the nozzle has high density, large hardness and strong heat conduction capacity, which can effectively delay deformation. The inner wall of the water-cooled cavity is smooth, the mechanical strength is high, the wall thickness is thin, and the cooling effect is good. In addition, the forging type oxygen lance nozzle is also provided with a guide water distribution cone to make the end cooling more uniform, greatly improving the heat cracking resistance, deformation resistance and corrosion resistance of the nozzle and prolonging the service life.

[0003] The oxygen nozzle of the oxygen lance nozzle is close to the molten metal, and during the oxygen blowing process, the liquid metal is easy to splash on the surface of the nozzle, resulting in uneven heat distribution in the oxygen lance nozzle, and thus part of the cooling water will boil on the inner surface of the oxygen lance nozzle. The water in the cooling system is not completely pure, which will cause uneven distribution of scale on the inner wall of the oxygen lance nozzle, affect the heat conduction efficiency, and thus cause the temperature of part of the surface of the oxygen lance nozzle to be extremely high, even melting. Therefore, the service life of the forging type oxygen lance nozzle in the prior art is low, and the maintenance frequency is high. SUMMARY

[0004] The purpose of the present application is to solve the problems of low service life and high maintenance frequency caused by uneven heat distribution at the oxygen nozzle, impurity-containing cooling water easy to generate scale, resulting in low heat conduction efficiency, local high temperature and even melting of the forging type oxygen lance nozzle in the prior art, and to provide a forging type oxygen lance nozzle.

[0005] The technical solution of the present application to solve the above technical problems is as follows: A forging type oxygen lance nozzle, comprising: A nozzle outer shell having a closed containing chamber, one end of which is provided with an oxygen nozzle; An inner isolation component coaxially arranged inside the nozzle outer shell, which separates the containing chamber into an outer heat conducting oil circulation cavity and an inner coolant flow cavity; An oxygen delivery channel is arranged at the axial position of the inner isolation component, and the outlet end of the oxygen delivery channel extends to the oxygen nozzle of the nozzle outer shell, and the oxygen delivery channel and the inner isolation component form a coolant flow gap therebetween; The low-temperature conducting system comprises at least one heat pipe element, the heat absorbing end of the heat pipe element is coupled with the coolant flow passage, and the heat releasing end extends to the oxygen jetting area of the nozzle shell for reducing the local temperature of the nozzle shell by phase change heat transfer. The fluid driving circulation system is arranged in the oxygen delivery channel and drives the heat conducting medium in the heat conducting oil circulation cavity by the oxygen flow kinetic energy, the fluid driving circulation system comprises a transmission mechanism and a circulation pipeline, and the circulation pipeline communicates different temperature areas of the heat conducting oil circulation cavity to ensure the uniform temperature of the heat conducting oil by the transmission mechanism.

[0006] Based on the above technical solutions, the application can be further improved as follows.

[0007] Further, the inner wall of the oxygen jetting area of the nozzle shell is provided with a phase change material coating, the phase change material coating is coupled with the heat releasing end of the low-temperature conducting system, the number of the oxygen jets is not less than four and the oxygen jets are symmetrically arranged according to the axis of the nozzle shell.

[0008] Further, the inner isolation assembly comprises: The inner shell is coaxially fixedly installed in the inner part of the nozzle shell, and the inner shell and the nozzle shell form a coolant flow cavity. The annular connecting plate is fixedly installed on the outer side of the inner shell, and the outer ring end of the annular connecting plate is fixedly connected with the inner wall of the nozzle shell, wherein the annular connecting plate, the inner shell and the nozzle shell form a heat conducting oil circulation cavity, and the heat conducting oil is filled in the heat conducting oil circulation cavity. The partition plate is fixedly installed on the inner wall of the inner shell, and the outer pipe is arranged at the center of the partition plate, the outer pipe is arranged in a closed manner in the nozzle shell, and the other end of the outer pipe is arranged in an open manner, and the partition plate divides the area formed between the inner shell and the outer pipe into a lower coolant inflow passage and an upper coolant outflow passage.

[0009] Further, the oxygen delivery channel comprises: The oxygen delivery pipe is coaxially arranged on the inner side of the outer pipe, the coolant flow passage is formed between the oxygen delivery pipe and the outer pipe, and the coolant is filled in the coolant flow passage. The spout pipe is communicated with the oxygen delivery pipe at one end and extends into the oxygen jetting port through the outer pipe and the inner shell at the other end, and the number and distribution position of the spout pipe are matched with the oxygen jetting port.

[0010] Further, the through hole is arranged on the outer wall of the outer pipe, the number and distribution position of the through hole are matched with the spout pipe, the spout pipe gap is connected to the inner side of the through hole, and the coolant in the coolant flow passage flows into the coolant inflow passage through the through hole.

[0011] Further, the heat pipe element comprises: Heat exchange pipes, which are arranged through the outer pipe and the inner shell, with one end in the coolant flow gap and the other end outside the inner shell, the number of the heat exchange pipes is not less than six and arranged in a ring shape at equal intervals around the axis of the inner shell; Heat insulation sleeves, which are fixedly installed between the outer pipe and the inner shell, the number and distribution of the heat insulation sleeves correspond to the heat exchange pipes, and the heat exchange pipes and the heat insulation sleeves are connected by interference.

[0012] Further, the low-temperature conduction system further comprises a transmission pipe, which is arranged through the inner shell, one end of the transmission pipe is in the coolant inflow channel, the other end of the transmission pipe is in the coolant outflow channel, the coolant in the coolant inflow channel flows into the coolant outflow channel through the transmission pipe, and the outside of the transmission pipe is in contact with the heat conduction oil in the heat conduction oil circulation cavity.

[0013] Further, the fluid-driven circulation system comprises: Fixed rods, which are fixedly installed on the inner side of the oxygen delivery pipe, the number of the fixed rods is not less than two; A mounting shell, which is fixedly installed on the end of the fixed rod, and has a mounting accommodation area on the inner side; An impeller rotor member, which is arranged on the mounting shell and directly contacts the oxygen; A transmission member, which is arranged in the mounting accommodation area of the mounting shell and connected with the impeller rotor member; Delivery pipes, one end of which is in communication with the mounting shell, and the other end of which is arranged through the heat conduction oil circulation cavity, the number of the delivery pipes is two, and the axes of the two delivery pipes are located on the same straight line.

[0014] Further, the impeller rotor member comprises: A rotating rod, one end of which is rotatably connected to the surface of the mounting shell; Blades, which are fixedly installed on the outer side of the rotating rod, the number of the blades is several and arranged in a ring shape at equal intervals in a clockwise direction; A first gear, which is fixedly installed on the outer side of the rotating rod and can rotate synchronously with the rotating rod; A rotating shaft, which is arranged through the mounting shell and rotatably connected with the mounting shell; A second gear, which is fixedly installed on the outer side of the rotating shaft and meshed with the first gear.

[0015] Further, the transmission member comprises: The driving gear is fixedly installed on the outer side of the rotating shaft and can rotate synchronously with the rotating shaft; The driven gear is rotatably installed on the inner side of the mounting shell, and the driving gear and the driven gear are in meshing engagement.

[0016] Compared with the prior art, the technical scheme of the present application has the following beneficial technical effects: The inner isolation assembly separates the containing cavity into the outer-layer heat-conducting oil circulation cavity and the inner-layer coolant flow-through cavity, forming double cooling protection, the heat-conducting oil has good thermal stability and heat conduction performance, can more uniformly transfer heat, avoids local overheating, the coolant flows through the inner layer and directly cools the oxygen delivery channel, improves the cooling efficiency, the heat-absorbing end of the heat pipe element is thermally coupled with the coolant flow-through gap, can quickly absorb heat and transfer the heat to the heat-releasing end, i.e., the oxygen jet port area of the outer shell of the nozzle, this phase change heat transfer mode has the characteristics of high efficiency and rapidness, can effectively reduce the local temperature at the oxygen jet port, reduces the problems of boiling of cooling water and generation of scale caused by uneven heat distribution, uses the kinetic energy of oxygen flow to drive the circulation of heat-conducting oil, does not need an additional power source, realizes effective utilization of energy, the circulation pipeline connects different temperature areas of the heat-conducting oil circulation cavity, ensures uniform heat-conducting oil temperature through the transmission mechanism, further improves the heat conduction efficiency, reduces the occurrence of local high-temperature areas, through optimization of the cooling structure, enhancement of the heat conduction efficiency and realization of energy self-sufficient circulation, effectively solves the problems of uneven heat distribution, scale affecting heat conduction efficiency and the like of the existing forging type oxygen lance nozzle, thereby prolongs the service life of the nozzle and reduces the maintenance frequency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall cross-sectional connection structure of the present application; Figure 2 It is a schematic diagram of the overall connection structure of the present application; Figure 3 It is a schematic diagram of the connection structure of the transmission pipe and the inner shell of the present application; Figure 4 It is a schematic diagram of the connection structure of the oxygen delivery pipe and the fluid-driven circulation system of the present application; Figure 5 It is a schematic diagram of the connection structure of the impeller rotor member and the transmission member of the present application.

[0018] In the figure: 1, the outer shell of the spray head; 2, the inner isolation assembly; 21, the inner shell; 22, the annular connecting plate; 23, the partition plate; 24, the outer tube; 3, the oxygen delivery channel; 31, the oxygen delivery tube; 32, the spray pipe; 4, the low-temperature conduction system; 41, the heat exchange tube; 42, the heat preservation sleeve; 43, the transmission tube; 5, the fluid-driven circulation system; 51, the fixed rod; 52, the mounting shell; 53, the impeller rotor component; 531, the rotating rod; 532, the blade; 533, the first gear; 534, the rotating shaft; 535, the second gear; 54, the transmission component; 541, the driving gear; 542, the driven gear; 55, the delivery tube; 6, the through hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0020] In combination Figures 1-5 As shown in the figure, the forged oxygen lance spray head of the present application comprises: The outer shell of the spray head 1 has a closed containing chamber, and an oxygen nozzle is arranged at one end thereof; The inner isolation assembly 2 is coaxially arranged inside the outer shell of the spray head 1, and separates the containing chamber into an outer heat-conducting oil circulation cavity and an inner coolant flow-through cavity; The oxygen delivery channel 3 is arranged through the axial position of the inner isolation assembly 2, and the outlet end thereof extends to the oxygen nozzle of the outer shell of the spray head 1, and the coolant flow-through gap is formed between the oxygen delivery channel 3 and the inner isolation assembly 2; The low-temperature conduction system 4 comprises at least one heat pipe element, the heat absorbing end of the heat pipe element is thermally coupled with the coolant flow-through gap, and the heat releasing end extends to the oxygen nozzle area of the outer shell of the spray head 1, for reducing the local temperature of the outer shell of the spray head 1 through phase change heat transfer; The fluid-driven circulation system 5 is arranged in the oxygen delivery channel 3, which utilizes the kinetic energy of oxygen flow to drive the circulation of the heat-conducting medium in the heat-conducting oil circulation cavity, and the fluid-driven circulation system 5 comprises a transmission mechanism and a circulation pipeline, and the circulation pipeline communicates different temperature areas of the heat-conducting oil circulation cavity, so as to ensure uniform temperature of the heat-conducting oil through the transmission mechanism.

[0021] In the working process of the forging type oxygen lance nozzle, the nozzle outer shell 1 serves as the overall structural basis, and the closed containing chamber provides installation space and working environment for the internal components; oxygen is sprayed out through the oxygen injection port at one end of the nozzle outer shell 1 for steelmaking; the inner isolation assembly 2 is coaxially arranged inside the nozzle outer shell 1, and divides the containing chamber into an outer heat conducting oil circulation cavity and an inner coolant flow-through cavity, so as to realize the construction of a double cooling path; the oxygen is sprayed out from the oxygen injection port of the nozzle outer shell 1 through the oxygen delivery channel 3, which penetrates through the axis of the inner isolation assembly 2; the coolant flow-through gap between the inner isolation assembly 2 and the inner isolation assembly 2 is used for the circulation of the coolant, so as to cool and lower the temperature of the oxygen delivery channel 3; the heat pipe element of the low-temperature conduction system 4 is thermally coupled with the coolant flow-through gap; when the coolant flow-through gap is heated, the heat pipe element absorbs heat, the internal medium undergoes a phase change, and the heat is quickly transferred to the heat release end; the heat release end extends to the oxygen injection port area of the nozzle outer shell 1, so as to reduce the local high temperature at the oxygen injection port and reduce the problem of boiling and scale of the cooling water caused by uneven heat; at the same time, the oxygen flowing in the oxygen delivery channel 3 generates kinetic energy, which drives the transmission mechanism of the fluid-driven circulation system 5 to operate; the different temperature regions of the heat conducting oil circulation cavity are connected through the circulation pipeline, so that the heat conducting oil circulates in the heat conducting oil circulation cavity, ensures the uniform temperature of the heat conducting oil, further improves the heat conduction efficiency, realizes the uniform distribution and efficient conduction of the heat of the nozzle, and solves the problems of uneven heat distribution and low heat conduction efficiency of the existing nozzle.

[0022] In a preferred embodiment of the present application, the nozzle outer shell 1 is provided with a phase change material coating on the inner wall of the oxygen injection port area, and the phase change material coating is thermally coupled with the heat release end of the low-temperature conduction system 4. Figure 1 、 Figure 4 The number of oxygen injection ports is not less than four and is symmetrically arranged according to the axis of the nozzle outer shell 1; in the working process, the oxygen injection port area of the nozzle outer shell 1 is close to the high-temperature molten metal, which is the key part of heat accumulation; the heat pipe element of the low-temperature conduction system 4 absorbs heat from the coolant flow-through gap and transfers the heat to the heat release end through phase change heat transfer; the heat release end is thermally coupled with the phase change material coating on the inner wall of the oxygen injection port area of the nozzle outer shell 1; when the temperature of the oxygen injection port area rises, the phase change material coating absorbs heat and undergoes a phase change, thereby absorbing a large amount of heat and reducing the temperature of the area, inhibiting the boiling of the cooling water and the generation of scale; at the same time, the not less than four oxygen injection ports symmetrically arranged according to the axis of the nozzle outer shell 1 can produce more uniform blowing force when the oxygen is sprayed out, avoid the liquid metal from being concentrated and splashed onto the surface of the nozzle, reduce the uneven distribution of heat, and the symmetric distribution helps the heat to be more evenly distributed, which, together with the phase change material coating and the low-temperature conduction system 4, ensures the uniform distribution of the heat of the nozzle, reduces the risk of local overheating, improves the heat resistance and deformation resistance of the nozzle, and prolongs the service life.

[0023] The application can be further configured in a preferred embodiment as shown in Figure 1 , Figure 3 The inner isolation assembly 2 comprises: An inner shell 21 is coaxially fixedly installed inside the outer shell 1 of the nozzle, and the inner shell 21 and the outer shell 1 of the nozzle form a coolant flow cavity; An annular connecting plate 22 is fixedly installed on the outer side of the inner shell 21, and the outer ring end of the annular connecting plate 22 is fixedly connected with the inner wall of the outer shell 1 of the nozzle, wherein the annular connecting plate 22, the inner shell 21 and the outer shell 1 of the nozzle form a heat conducting oil circulation cavity, and the heat conducting oil is filled in the heat conducting oil circulation cavity; A partition plate 23 is fixedly installed on the inner wall of the inner shell 21, and an outer pipe 24 is arranged at the center of the partition plate 23, the outer pipe 24 is arranged in a closed manner in the outer shell 1 of the nozzle, and the other end of the outer pipe 24 is arranged in an open manner, the partition plate 23 divides the area between the inner shell 21 and the outer pipe 24 into a lower coolant inflow channel and an upper coolant outflow channel, the inner shell 21 and the outer shell 1 of the nozzle form a coolant flow cavity, providing an outer flow space for the coolant, the annular connecting plate 22, the inner shell 21 and the outer shell 1 of the nozzle form a heat conducting oil circulation cavity, ensuring that the heat conducting oil circulates in the cavity to uniformly conduct heat, and the partition plate 23 divides the area between the inner shell 21 and the outer pipe 24 into a lower coolant inflow channel and an upper coolant outflow channel, so that the coolant enters from the lower inflow channel, flows through the coolant flow gap to cool the oxygen delivery channel 3, and then flows out from the upper outflow channel, forming an orderly coolant circulation path.

[0024] The application can be further configured in a preferred embodiment as shown in Figure 1 , Figure 4 The oxygen delivery channel 3 comprises: An oxygen delivery pipe 31 is coaxially arranged inside the outer pipe 24, and a coolant flow gap is formed between the oxygen delivery pipe 31 and the outer pipe 24, and the coolant flow gap is filled with coolant; The nozzle 32 has one end connected to the oxygen delivery pipe 31, and the other end passes through the outer pipe 24 and the inner shell 21 and extends into the oxygen nozzle. The number and distribution of the nozzles 32 are matched with the oxygen nozzles. The oxygen delivery pipe 31 is coaxially arranged inside the outer pipe 24. The coolant flow gap formed between the two is filled with coolant. When high-temperature oxygen flows in the oxygen delivery pipe 31, the coolant absorbs heat through heat exchange, reducing the temperature of the oxygen delivery pipe 31 and preventing it from deforming due to high temperature. One end of the nozzle 32 is connected to the oxygen delivery pipe 31, and the other end passes through the outer pipe 24 and the inner shell 21 and extends into the oxygen nozzle. The number and distribution of the nozzles 32 are matched with the oxygen nozzles, ensuring that oxygen is evenly sprayed from the oxygen delivery pipe 31 through the nozzles 32 from each oxygen nozzle, achieving effective purging of molten metal. At the same time, the coolant flows in the coolant flow gap, continuously carrying away heat and ensuring that the temperature of the nozzle 32 and the oxygen nozzle area is within a safe range.

[0025] In a preferred embodiment, the present invention may be further configured as follows: Figure 1 As shown, the outer wall of the outer tube 24 has through holes 6. The number and distribution of the through holes 6 correspond to the nozzle 32. The nozzle 32 is intermittently connected to the inner side of the through holes 6. The coolant in the coolant flow gap flows into the coolant flow channel through the through holes 6. The through holes 6 on the outer wall of the outer tube 24 and the corresponding structure of the nozzle 32 form a circulation path for the coolant. When the nozzle is working, the coolant in the coolant flow gap between the oxygen delivery pipe 31 and the outer tube 24 absorbs the heat generated during the oxygen delivery process and flows into the lower coolant flow channel through the through holes 6 corresponding to the position of the nozzle 32. This design realizes the orderly flow of the coolant: the coolant enters the coolant flow gap from the coolant flow channel, absorbs heat, flows back to the coolant flow channel through the through holes 6, and is discharged through the upper coolant outflow channel.

[0026] In a preferred embodiment, the present invention may be further configured as follows: Figure 1 As shown; the heat pipe element includes: Heat exchange tubes 41 are installed through the outer tube 24 and the inner shell 21, with one end located in the coolant flow gap and the other end located outside the inner shell 21. There are no fewer than six heat exchange tubes 41, which are distributed in a ring at equal intervals along the axis of the inner shell 21. The heat preservation sleeve 42 is fixedly installed between the outer pipe 24 and the inner shell 21, wherein the number and distribution position of the heat preservation sleeve 42 correspond to the heat exchange pipes 41, the heat exchange pipes 41 are connected with the heat preservation sleeve 42 in an interference fit, one end of the heat exchange pipes 41 is arranged in the coolant flow gap, can sufficiently absorb the heat carried by the coolant, and utilizes the phase change characteristics of the internal medium to rapidly transmit the heat to the other end located in the region outside the inner shell 21, the heat preservation sleeve 42 is fixedly installed between the outer pipe 24 and the inner shell 21 and corresponds to the heat exchange pipes 41 one by one, tightly wraps the heat exchange pipes 41 through the interference fit, reduces the heat loss to the surrounding region while ensuring the efficient conduction of the heat along the heat exchange pipes 41, and ensures that the heat is accurately transmitted to the oxygen spout region of the shower head outer shell 1, thereby reducing the local high temperature of the region.

[0027] The application can be further configured as shown in Figure 1 、 Figure 3 The low-temperature conduction system 4 further comprises a transmission pipe 43, the transmission pipe 43 is arranged through the inner shell 21, one end of the transmission pipe 43 is located in the coolant inflow channel, the other end of the transmission pipe 43 is located in the coolant outflow channel, the coolant in the coolant inflow channel flows into the coolant outflow channel through the transmission pipe 43, the outside of the transmission pipe 43 is in contact with the heat-conducting oil in the heat-conducting oil circulation cavity, when the coolant enters the transmission pipe 43 from the coolant inflow channel, the low-temperature coolant exchanges heat with the high-temperature heat-conducting oil outside the transmission pipe 43, absorbs the heat of the heat-conducting oil, reduces the temperature of the heat-conducting oil, and enables the heat-conducting oil to more effectively absorb heat from the shower head outer shell 1. At the same time, the coolant absorbs heat in the transmission pipe 43, the temperature of the coolant is increased, the coolant flows into the coolant outflow channel, and finally is output, and the coolant in the coolant inflow channel is continuously supplied, so that the cooling work can be continuously performed in the process of use.

[0028] The application can be further configured as shown in Figure 1 、 Figure 5 The fluid driving circulation system 5 comprises: The fixed rod 51 is fixedly installed on the inner side of the oxygen delivery pipe 31, and the number of the fixed rod 51 is not less than two; The installation shell 52 is fixedly installed on the end of the fixed rod 51, and the inner side of the installation shell 52 is provided with an installation containing area; The impeller rotor member 53 is arranged on the installation shell 52 and directly contacts the oxygen; The transmission member 54 is arranged in the installation containing area of the installation shell 52 and is connected with the impeller rotor member 53; The conveying pipe 55, one end of which is in communication with the mounting shell 52, and the other end of which penetrates into the heat conducting oil circulation cavity, the number of the conveying pipe 55 is two, the axis of the two conveying pipes 55 is located on the same straight line, when the oxygen flows at high speed in the oxygen conveying pipe 31, the oxygen directly contacts the impeller rotor member 53, the flow impact force of the oxygen drives the impeller rotor member 53 to rotate, the impeller rotor member 53 is installed on the mounting shell 52 fixed at the end of the fixed rod 51 inside the oxygen conveying pipe 31, the fixed rod 51 is not less than two, which provides stable support for the mounting shell 52, after the impeller rotor member 53 rotates, the mounting shell 52 drives the transmission member 54 in the mounting and containing area to work, the transmission member 54 transmits power, so that the heat conducting oil can flow in the heat conducting oil circulation cavity through the conveying pipe 55 in communication with the mounting shell 52, under the driving of the transmission member 54, the circulation of the heat conducting oil is realized, so that the temperature of the heat conducting oil is uniform, and the heat conduction efficiency of the whole nozzle is improved.

[0029] In a preferred embodiment of the present application, the nozzle can be further configured as shown in Figure 1 、 Figure 5 The impeller rotor member 53 comprises: The rotating rod 531, one end of which is rotatably connected to the surface of the mounting shell 52; The blade 532, which is fixedly installed on the outside of the rotating rod 531, wherein the number of the blade 532 is several and is arranged in a ring shape inclined equidistantly in a clockwise direction; The first gear 533, which is fixedly installed on the outside of the rotating rod 531 and can rotate synchronously with the rotating rod 531; The rotating shaft 534, which penetrates the mounting shell 52 and is rotatably connected between the mounting shell 52 and the rotating shaft 534; The second gear 535, which is fixedly installed on the outside of the rotating shaft 534 and is in meshing relationship with the first gear 533, when the oxygen flows at high speed in the oxygen conveying pipe 31, the oxygen contacts the several blades 532 arranged in a ring shape inclined equidistantly in a clockwise direction, the blade 532 is impacted by the flow of the oxygen due to the inclined design, drives the fixedly installed rotating rod 531 to rotate around the rotatable connection end of the rotating rod 531 and the mounting shell 52, when the rotating rod 531 rotates, the first gear 533 fixedly installed on the outside of the rotating rod 531 rotates synchronously, the first gear 533 and the second gear 535 fixedly installed on the outside of the rotating shaft 534 which penetrates the mounting shell 52 and is rotatable are in meshing relationship, the rotation of the first gear 533 is transmitted to the second gear 535 through the meshing of the gears, and then drives the rotating shaft 534 to rotate, the rotation of the rotating shaft 534 transmits power to the transmission member 54 in the fluid driven circulation system 5, drives the conveying pipe 55 to realize the circulation flow of the heat conducting oil in the heat conducting oil circulation cavity, so that the temperature of the heat conducting oil is uniform, and the heat conduction efficiency of the nozzle is improved.

[0030] The application can be further configured in a preferred embodiment as shown in Figure 1 、 Figure 5 The transmission member 54 comprises: A driving gear 541 fixedly installed on the outer side of the rotating shaft 534 and synchronously rotatable with the rotating shaft 534; A driven gear 542 rotatably arranged on the inner side of the installation housing 52, and the driving gear 541 and the driven gear 542 are in meshing engagement, and when the forging type oxygen lance nozzle is in operation, the transmission member 54 realizes the circulating driving of the heat conducting oil based on the gear pump principle, when the oxygen flows in the oxygen delivery pipe 31 to drive the rotating shaft 534 of the impeller rotor member 53 to rotate, the driving gear 541 fixedly installed on the outer side of the rotating shaft 534 synchronously rotates to form the external meshing transmission with the driven gear 542, and with the rotation of the gears, the chambers gradually increase on the suction side to generate a vacuum to suck the low-temperature heat conducting oil, and the chambers gradually decrease on the discharge side to press the heat conducting oil out and deliver it to another area, and this working mode is the same as the structure and principle of the gear pump, and the continuous delivery of the heat conducting oil is realized through the meshing movement of the gears to balance the temperature distribution in the heat conducting oil circulating cavity.

[0031] The specific working principle of the forging type oxygen lance nozzle is as follows: When the forging type oxygen lance nozzle is used, first, the coolant and the heat conducting oil are respectively injected into the coolant flow-through cavity and the heat conducting oil circulating cavity through the external pipeline, and the oxygen delivery channel 3 is communicated with the external oxygen source; When in operation, the oxygen is high-speed sprayed from the oxygen lance nozzle through the oxygen delivery pipe 31 and the spray pipe 32 to the oxygen nozzle of the outer nozzle housing 1 to blow the molten metal; At the same time, the coolant enters the coolant flow-through gap from the coolant inflow channel, absorbs the heat of the oxygen delivery pipe 31 and the spray pipe 32, and then flows to the coolant inflow channel through the through hole 6, and the coolant in the coolant inflow channel directly flows from the coolant inflow channel to the coolant outflow channel through the transmission pipe 43, in this process, the heat conducting oil outside the transmission pipe 43 exchanges heat with the coolant inside, to further balance the temperature of the two, the coolant absorbs heat in the transmission pipe 43 and the temperature rises, then flows into the coolant outflow channel and finally outputs, and with the continuous supply of the coolant in the coolant inflow channel, the continuous cooling work can be carried out in the process of use; The heat exchange pipe 41 of the low-temperature conduction system 4 absorbs heat through the coolant flow-through gap, and the internal medium transmits the heat to the oxygen nozzle area of the nozzle housing 1 after phase change, and cooperates with the phase change material coating on the inner wall to absorb high-temperature heat and reduce the local temperature; In the process used here, the oxygen flow kinetic energy drives the impeller rotor member 53 of the fluid drive circulating system 5 to rotate, the oxygen impacts the blade 532 to make the rotating rod 531 rotate the first gear 533, through the meshing second gear 535 to drive the rotating shaft 534 to rotate, and then make the driving gear 541 drive the driven gear 542 to rotate, as the gear pump principle, the heat conducting oil in the heat conducting oil circulating cavity region is pressed to another region through the conveying pipe 55, realizing the circulation of the heat conducting oil to achieve uniform temperature; Through double cooling circulation and high efficiency heat conduction, the problems of overheating, scale generation and melting of the nozzle are avoided, and stable and efficient steelmaking operation is realized.

[0032] It should be noted that in this paper, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the existence of other identical elements in the process, method, article or equipment including the element.

[0033] Although the embodiments of the present application have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A forged lance nozzle characterized in that, The application relates to a low-temperature oxygen nozzle, which comprises the following parts: an outer nozzle shell (1) with a closed containing cavity, one end of which is provided with an oxygen nozzle; an inner isolation assembly (2) coaxially arranged in the outer nozzle shell (1), which divides the containing cavity into an outer heat-conducting oil circulating cavity and an inner coolant circulating cavity; an oxygen delivery channel (3) arranged through the center of the inner isolation assembly (2), the outlet end of which extends to the oxygen nozzle of the outer nozzle shell (1), and the oxygen delivery channel (3) and the inner isolation assembly (2) form a coolant circulating gap; a low-temperature conduction system (4) comprising at least one heat pipe element, the heat absorbing end of the heat pipe element is coupled with the coolant circulating gap, and the heat releasing end extends to the oxygen nozzle area of the outer nozzle shell (1), which is used for reducing the local temperature of the outer nozzle shell (1) through phase change heat conduction; a fluid-driven circulating system (5) arranged in the oxygen delivery channel (3), which drives the heat-conducting medium in the heat-conducting oil circulating cavity by using the oxygen flow kinetic energy, the fluid-driven circulating system (5) comprises a transmission mechanism and a circulating pipeline, and the circulating pipeline is connected with different temperature areas of the heat-conducting oil circulating cavity to ensure the uniform temperature of the heat-conducting oil through the transmission mechanism.

2. A forging type oxygen lance nozzle according to claim 1, characterized in that The inner wall of the oxygen nozzle area of the outer nozzle shell (1) is provided with a phase change material coating, the phase change material coating is coupled with the heat releasing end of the low-temperature conduction system (4), and the number of the oxygen nozzles is not less than four and is symmetrically arranged according to the center of the outer nozzle shell (1).

3. A forging type oxygen lance nozzle according to claim 2, characterized in that The inner isolation assembly (2) comprises: an inner shell (21) coaxially fixedly arranged in the outer nozzle shell (1), the inner shell (21) and the outer nozzle shell (1) form a coolant circulating cavity; an annular connecting plate (22) fixedly arranged on the outer side of the inner shell (21), and the outer ring end of the annular connecting plate (22) is fixedly connected with the inner wall of the outer nozzle shell (1), wherein the annular connecting plate (22), the inner shell (21) and the outer nozzle shell (1) form a heat-conducting oil circulating cavity, and the heat-conducting oil is filled in the heat-conducting oil circulating cavity; a partition plate (23) fixedly arranged on the inner wall of the inner shell (21), the center of the partition plate (23) is provided with an outer pipe (24), the outer pipe (24) is arranged in the outer nozzle shell (1) in a closed mode, and the other end of the outer pipe (24) is arranged in an open mode, and the partition plate (23) divides the area formed between the inner shell (21) and the outer pipe (24) into a lower coolant inflow channel and an upper coolant outflow channel.

4. A forging type oxygen lance nozzle according to claim 3, characterized in that The oxygen delivery channel (3) comprises: an oxygen delivery pipe (31) coaxially arranged on the inner side of the outer pipe (24), the oxygen delivery pipe (31) and the outer pipe (24) form a coolant circulating gap, and the coolant circulating gap is filled with coolant; a nozzle pipe (32) with one end communicated with the oxygen delivery pipe (31) and the other end penetrating the outer pipe (24) and the inner shell (21) and extending into the oxygen nozzle, and the number and distribution position of the nozzle pipe (32) are matched with the oxygen nozzle.

5. A forging type oxygen lance nozzle according to claim 4, characterized in that The outer wall of the outer tube (24) is provided with through holes (6), the number and distribution of the through holes (6) correspond to the nozzles (32), the nozzles (32) are connected to the inner side of the through holes (6), and the coolant in the coolant flow gap flows into the coolant inflow channel through the through holes (6).

6. A forging type oxygen lance nozzle according to claim 4, wherein The heat pipe element comprises: The heat exchange pipes (41) are arranged through the outer tube (24) and the inner shell (21), one end of each of the heat exchange pipes (41) is located in the coolant flow gap, and the other end is located outside the inner shell (21), the number of the heat exchange pipes (41) is not less than six, and the heat exchange pipes (41) are arranged in a ring shape at equal intervals around the axis of the inner shell (21); The heat preservation sleeves (42) are fixedly installed between the outer tube (24) and the inner shell (21), the number and distribution of the heat preservation sleeves (42) correspond to the heat exchange pipes (41), and the heat exchange pipes (41) and the heat preservation sleeves (42) are connected in an interference fit.

7. A forging type oxygen lance nozzle according to claim 5, wherein The low-temperature conduction system (4) further comprises a transmission pipe (43), the transmission pipe (43) is arranged through the inner shell (21), one end of the transmission pipe (43) is located in the coolant inflow channel, the other end of the transmission pipe (43) is located in the coolant outflow channel, the coolant in the coolant inflow channel flows into the coolant outflow channel through the transmission pipe (43), and the outer part of the transmission pipe (43) is in contact with the heat-conducting oil in the heat-conducting oil circulation cavity.

8. A forging type oxygen lance nozzle according to claim 4, wherein The fluid-driven circulation system (5) comprises: The fixed rods (51) are fixedly installed on the inner side of the oxygen delivery pipe (31), and the number of the fixed rods (51) is not less than two; The mounting shell (52) is fixedly installed on the end of the fixed rod (51), and the inner side of the mounting shell (52) is provided with a mounting accommodation area; The impeller rotor member (53) is arranged on the mounting shell (52) and directly contacts oxygen; The transmission member (54) is arranged in the mounting accommodation area of the mounting shell (52) and is connected with the impeller rotor member (53); The delivery pipes (55) are arranged in the heat-conducting oil circulation cavity, one end of each of the delivery pipes (55) is in communication with the mounting shell (52), and the other end of each of the delivery pipes (55) is arranged through the heat-conducting oil circulation cavity, the number of the delivery pipes (55) is two, and the axes of the two delivery pipes (55) are located on the same straight line.

9. A forging type oxygen lance nozzle according to claim 8, characterized in that The impeller rotor member (53) comprises: The rotating rod (531) is rotatably connected to the surface of the mounting shell (52); The blades (532) are fixedly installed on the outer side of the rotating rod (531), the number of the blades (532) is a plurality, and the blades (532) are arranged in a ring shape at equal intervals in a clockwise direction; The first gear (533) is fixedly installed on the outer side of the rotating rod (531) and can rotate synchronously with the rotating rod (531); The rotating shaft (534) is arranged through the mounting shell (52) and is rotatably connected to the mounting shell (52); The second gear (535) is fixedly installed on the outer side of the rotating shaft (534) and is in engagement with the first gear (533).

10. A forging type oxygen lance nozzle according to claim 9, characterized in that The transmission member (54) comprises: A driving gear (541) is fixedly installed on the outer side of the rotating shaft (534) and can rotate synchronously with the rotating shaft (534); A driven gear (542) is rotatably installed on the inner side of the mounting shell (52), and the driving gear (541) and the driven gear (542) are in mesh with each other.

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