Transfer pipeline

Abstract

The utility model discloses a transfer pipeline, which relates to the technical field of casting tools, and comprises a pipeline body and an outer sleeve, the pipeline body comprises a fixed part and a pipeline part, and the fixed part is connected with the pipeline part; the outer sleeve is arranged outside the pipeline part of the pipeline body in a sleeving mode, a first heat insulation layer is arranged outside the end, close to the fixing part, of the outer sleeve, a second heat insulation layer is arranged between the inner wall of the outer sleeve and the outer wall of the pipeline part, and third heat insulation layers are arranged in the outer sleeve and the pipeline part. According to the transfer pipeline, the first heat insulation layer conducts heat insulation protection on the joint of the top end of the outer sleeve and the pipeline body, the second heat insulation layer conducts heat insulation protection on the gap between the inner wall of the outer sleeve and the outer wall of the pipeline part, and the third heat insulation layer conducts heat insulation protection on the interior of the outer sleeve and the interior of the pipeline part; the heat preservation capacity of the transfer pipeline is improved, excessive heat loss caused by heat exchange of the melt can be effectively avoided, the temperature drop of the melt in the casting process is small, and melt temperature control in the casting process is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of casting tooling, in particular to a transfer pipeline. Background Art

[0002] Some aluminum alloys contain a high concentration of highly chemically active alloying elements and must therefore be refined in a vacuum still furnace. In semi-continuous casting of special alloys, a transfer pipe is required to transfer the melt from the vacuum still furnace to the crystallizer.

[0003] However, currently used transfer pipes are not insulated, resulting in poor thermal insulation. This results in a significant drop in melt temperature during casting, hindering melt temperature control. Therefore, the existing technology still has shortcomings and deficiencies, and finding a transfer pipe with improved thermal insulation is a pressing technical problem for those skilled in the art. Utility Model Content

[0004] The purpose of the utility model is to provide a transfer pipe, which solves the technical problem that the current transfer pipe has no heat insulation treatment and has poor heat preservation ability, resulting in a large drop in melt temperature during the casting process, which is not conducive to melt temperature control during the casting process.

[0005] To achieve the above-mentioned purpose, the present invention provides a transfer pipeline, comprising:

[0006] a pipe body, the pipe body comprising a fixing portion and a pipe portion, the fixing portion and the pipe portion being connected;

[0007] An outer sleeve is sleeved and fixed on the outside of the pipe part of the pipe body, a first insulation layer is provided on the outside of one end of the outer sleeve close to the fixed part, a second insulation layer is provided between the inner wall of the outer sleeve and the outer wall of the pipe part, and a third insulation layer is provided inside the outer sleeve and inside the pipe part.

[0008] Preferably, the pipe portion is located at the center of the fixing portion, and the pipe portion passes through the fixing portion.

[0009] Preferably, a first step portion is provided on the outside of the top end of the outer sleeve, a limiting assembly is provided on the outside of the pipe portion, and the outer sleeve is fixed to the pipe body through the first step portion and the limiting assembly.

[0010] Preferably, the limiting component includes:

[0011] a first connecting member, fixed to the outside of the pipe portion;

[0012] a second connecting member, arranged parallel to the first connecting member;

[0013] a third connecting member, located between the first connecting member and the second connecting member, with two ends connected to the first connecting member and the third connecting member respectively;

[0014] The first connecting member, the second connecting member and the third connecting member form an accommodating space, the first step portion is accommodated in the accommodating space, and the first step portion abuts against the second connecting member.

[0015] Preferably, a filling piece is further included, the top end of the outer sleeve and the limiting assembly are located inside the filling piece, and the first thermal insulation layer is filled in the filling piece.

[0016] Preferably, a second step portion is provided at the lower end of the outer sleeve, and the end surface of the third thermal insulation layer is flush with the end surface of the second step portion.

[0017] Preferably, the first heat insulation layer is silicone cotton.

[0018] Preferably, the second thermal insulation layer is an aluminum silicate fiberboard.

[0019] Preferably, the third thermal insulation layer is wet-built zirconium silicon viscose cotton.

[0020] Compared with the above-mentioned background technology, the transfer pipe provided by the present invention has a first insulation layer for thermally insulating the connection between the top of the outer sleeve and the pipe body, a second insulation layer for thermally insulating the gap between the inner wall of the outer sleeve and the outer wall of the pipe part, and a third insulation layer for thermally insulating the inside of the outer sleeve and the inside of the pipe part to avoid direct contact between the melt and the outer sleeve and the pipe part. Through such an arrangement, the thermal insulation capacity of the transfer pipe is improved, and the melt can be effectively prevented from losing too much heat due to heat exchange, so that the temperature drop of the melt during the casting process is small, which is beneficial to the control of the melt temperature during the casting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 A schematic cross-sectional view of a transfer pipe according to an embodiment of the present invention;

[0023] Figure 2 A schematic cross-sectional view of a pipe body in a transfer pipe provided by an embodiment of the present utility model;

[0024] Figure 3This is a schematic cross-sectional structural diagram of an outer sleeve in a transfer pipeline provided by an embodiment of the present utility model.

[0025] Figures 1 to 3 Reference numerals in the accompanying drawings: 10, pipe body; 11, fixing part; 12, pipe part; 20, outer sleeve; 21, first step part; 22, second step part; 30, first thermal insulation layer; 31, second thermal insulation layer; 32, third thermal insulation layer; 40, first connecting piece; 41, second connecting piece; 42, third connecting piece; 50, filling piece. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] The utility model provides a transfer pipe, which improves the heat preservation capacity of the transfer pipe by arranging a first heat insulation layer 30, a second heat insulation layer 31 and a third heat insulation layer 32, so that the melt temperature drop during the casting process is small, which is beneficial to the melt temperature control during the casting process.

[0029] Please refer to Figures 1 to 3 The transfer pipe provided by the present invention includes a pipe body 10 and an outer sleeve 20.

[0030] The pipe body 10 includes a fixing portion 11 and a pipe portion 12. The fixing portion 11 and the pipe portion 12 are connected, and the pipe portion 12 can be welded to the fixing portion 11. The fixing portion 11 is used to fix the pipe body 10. The fixing portion 11 can be fixed by welding. For example, in semi-continuous casting of special alloys, the fixing portion 11 can be installed in a vacuum static furnace. The melt is transferred from the vacuum static furnace to the crystallizer via a transfer pipe. In this embodiment, the pipe body 10 is made of steel.

[0031] The outer sleeve 20 is mounted and fixed to the outside of the pipe portion 12 of the pipe body 10. A first thermal insulation layer 30 is provided on the outer surface of the end of the outer sleeve 20 near the fixing portion 11. A second thermal insulation layer 31 is provided between the inner wall of the outer sleeve 20 and the outer wall of the pipe portion 12. A third thermal insulation layer 32 is provided inside the outer sleeve 20 and the pipe portion 12. In this embodiment, the outer sleeve 20 is made of a sialon tube. Specifically, the sialon tube can be made of silicon carbide material sintered at high temperature in a nitrogen atmosphere.

[0032] When the transfer pipe provided in this embodiment is used for melt transfer, the melt passes through the pipe portion 12 and the outer sleeve 20 of the pipe body 10 in sequence. The first insulation layer 30 provides insulation protection for the connection between the top of the outer sleeve 20 and the pipe body 10. The second insulation layer 31 provides insulation protection for the gap between the inner wall of the outer sleeve 20 and the outer wall of the pipe portion 12. The third insulation layer 32 provides insulation protection for the inside of the outer sleeve 20 and the inside of the pipe portion 12 to avoid direct contact between the melt and the outer sleeve 20 and the pipe portion 12. Through such an arrangement, the thermal insulation capacity of the transfer pipe is improved, and the melt can be effectively prevented from losing too much heat due to heat exchange, so that the temperature drop of the melt during the casting process is small, which is beneficial to the control of the melt temperature during the casting process.

[0033] Please refer to Figures 1 to 3 The pipe portion 12 is located at the center of the fixing portion 11 , and the pipe portion 12 passes through the fixing portion 11 .

[0034] Please refer to Figures 1 to 3 A first step portion 21 is provided on the outside of the top end of the outer sleeve 20, and a limiting component is provided on the outside of the pipe portion 12. The outer sleeve 20 is fixed to the pipe body 10 through the first step portion 21 and the limiting component. After the outer sleeve 20 is sleeved on the outside of the pipe portion 12 of the pipe body 10, the outer sleeve 20 is fixed by using the limiting component to limit the first step portion 21, and the structure is simple.

[0035] Please refer to Figures 1 to 3 The limiting assembly includes a first connecting member 40, a second connecting member 41 and a third connecting member 42.

[0036] The first connecting member 40 is fixed to the outside of the pipe portion 12; the second connecting member 41 is arranged parallel to the first connecting member 40; the third connecting member 42 is located between the first connecting member 40 and the second connecting member 41, and the two ends of the third connecting member 42 are respectively connected to the first connecting member 40 and the third connecting member 42.

[0037] Among them, the first connecting member 40, the second connecting member 41 and the third connecting member 42 form an accommodating space, the first step portion 21 is accommodated in the accommodating space, and the first step portion 21 is abutted against the second connecting member 41. Through such an arrangement, the outer sleeve 20 is fixed to the outside of the pipe portion 12 of the pipe body 10. The structure is simple and easy to implement.

[0038] In one specific embodiment, the first connecting member 40 and the second connecting member 41 are annular structures. The first connecting member 40 is sleeved on the outside of the pipe portion 12 of the pipe body 10 and fixed to the outside of the pipe portion 12. The second connecting member 41 is sleeved outside the pipe portion 12 of the pipe body 10. The first connecting member 40 and the second connecting member 41 are connected by a third connecting member 42. The lower end surface of the first step portion 21 is abutted against the upper surface of the second connecting member 41. The first step portion 21 is limited by the second connecting member 41, thereby fixing the outer sleeve 20 to the pipe body 10.

[0039] In another specific embodiment, the first connecting member 40 and the second connecting member 41 are plate-like structures, the first connecting member 40 is fixed to the outside of the pipe portion 12, the second connecting member 41 is located below the first connecting member 40, the first connecting member 40 and the second connecting member 41 are connected by a third connecting member 42, the lower end surface of the first step portion 21 is abutted against the upper surface of the second connecting member 41, and the first step portion 21 is limited by the second connecting member 41, so that the outer sleeve 20 is fixed to the pipe body 10.

[0040] Please refer to Figures 1 to 3 The transfer pipe provided by the present invention further includes a filling member 50. The top end of the outer sleeve 20 and the stop assembly are located inside the filling member 50, and the first thermal insulation layer 30 is filled within the filling member 50. In this embodiment, the filling member 50 is fixed to the fixing portion 11 of the pipe body 10. The first step portion 21 at the top end of the outer sleeve 20 and the above-mentioned stop assembly are completely accommodated within the filling member 50. The first thermal insulation layer 30 is filled within the filling member 50. The first thermal insulation layer 30 provides thermal insulation protection for the connection between the top end of the outer sleeve 20 and the pipe body 10, thereby improving the thermal insulation capacity of the transfer pipe and effectively preventing excessive heat loss of the melt.

[0041] Please refer to Figures 1 to 3 A second step portion 22 is provided at the lower end of the outer sleeve 20, and the end surface of the third thermal insulation layer 32 is flush with the end surface of the second step portion 22. Through such a setting, the melt can be effectively prevented from directly contacting the inner wall of the outer sleeve 20, thereby improving the thermal insulation capacity of the transfer pipeline and ensuring that the melt will not be hindered when passing through the outer sleeve 20, thereby ensuring smooth flow and facilitating melt transfer.

[0042] Preferably, in this embodiment, the first heat insulation layer 30 is silicone cotton, which is tightly filled in the filling member 50 and has a better heat preservation effect.

[0043] Preferably, in this embodiment, the second heat insulation layer 31 is an aluminum silicate fiberboard, and the aluminum silicate fiberboard is 5 mm thick.

[0044] Preferably, in this embodiment, the third thermal insulation layer 32 is wet-laid zirconium silicon viscose cotton.

[0045] The installation process of the transfer pipe provided by the present invention is as follows: the outer sleeve 20 is sleeved and fixed on the outside of the pipe part 12 of the pipe body 10, an aluminum silicate fiberboard is set in the gap between the inner wall of the outer sleeve 20 and the outer wall of the pipe part 12, silicone cotton is filled into the filling piece 50, and wet-built zirconium silicone cotton is set on the inner wall of the outer sleeve 20 and the inner wall of the pipe part 12. After the assembly is completed, the transfer pipe is pre-baked.

[0046] The transfer pipe provided by the present invention has a pipe portion 12 of the pipe body 10 of a reasonable length. When in use, the pipe portion 12 will not be immersed in the melt, thereby preventing the pipe portion 12 from melting and causing the melt to increase iron and contaminate the melt. Moreover, by providing a first insulation layer 30, the connection between the top of the outer sleeve 20 and the pipe body 10 is insulated and protected. By providing a second insulation layer 31, the gap between the inner wall of the outer sleeve 20 and the outer wall of the pipe portion 12 is insulated and protected. By providing a third insulation layer 32, the interior of the outer sleeve 20 and the interior of the pipe portion 12 are insulated and protected. The melt will not directly contact the outer sleeve 20 and the pipe portion 12, thereby improving the heat preservation capacity of the transfer pipe and effectively avoiding excessive heat loss of the melt due to heat exchange. As a result, the temperature drop of the melt during the casting process is small, which is beneficial to the temperature control of the melt during the casting process.

[0047] The pipe portion 12 of the pipe body 10 is a steel pipe. After the pipe portion 12 is processed, it is connected to the fixing portion 11 by welding. Optionally, the processing of the pipe portion 12 includes the following steps:

[0048] Raw material preparation: The raw materials for stainless steel pipes mainly include iron, chromium, nickel, molybdenum and other metals. Before entering the smelting process, these raw materials need to go through screening, sorting, cleaning, separation and other processes to ensure that the quality meets the standards;

[0049] Melting: The raw materials are melted in a furnace to ensure a thorough and uniform mixing of the alloying elements. The melting process requires controlling factors such as temperature, stirring speed, and oxygen blowing. This can be done in various ways, such as electric arc furnaces and medium-frequency furnaces.

[0050] Rolling: After melting, stainless steel is processed through rolling machines. Rolling can be divided into two methods: cold rolling and hot rolling. Cold rolling is performed at room temperature, which increases the strength and hardness of the steel; hot rolling is performed at high temperatures, which can reduce the thickness of the steel.

[0051] Annealing: Rolled stainless steel needs to be annealed to change its structure and properties and improve the thermoplasticity and toughness of the product.

[0052] Finished product processing: After annealing, stainless steel can be further processed, such as cutting, welding, cold drawing, drilling, etc., to meet the needs of use.

[0053] Surface treatment: The surface of stainless steel needs to be processed through processes such as polishing, sandblasting, and pickling to improve its appearance and corrosion resistance.

[0054] Finished product testing: After processing, stainless steel pipes need to undergo strict product testing, including salt spray testing, air tightness testing, etc.

[0055] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0056] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A transfer pipeline, characterized in that: include: a pipe body, the pipe body comprising a fixing portion and a pipe portion, the fixing portion and the pipe portion being connected; An outer sleeve is sleeved and fixed on the outside of the pipe part of the pipe body, a first insulation layer is provided on the outside of one end of the outer sleeve close to the fixed part, a second insulation layer is provided between the inner wall of the outer sleeve and the outer wall of the pipe part, and a third insulation layer is provided inside the outer sleeve and inside the pipe part.

2. The transfer pipeline according to claim 1, characterized in that: The pipe portion is located at the center of the fixing portion and passes through the fixing portion.

3. The transfer pipeline according to claim 2, characterized in that: A first step portion is provided on the outside of the top end of the outer sleeve, a limiting assembly is provided on the outside of the pipe portion, and the outer sleeve is fixed to the pipe body through the first step portion and the limiting assembly.

4. The transfer pipeline according to claim 3, characterized in that: The limiting component includes: a first connecting member, fixed to the outside of the pipe portion; a second connecting member, arranged parallel to the first connecting member; a third connecting member, located between the first connecting member and the second connecting member, with two ends connected to the first connecting member and the third connecting member respectively; The first connecting member, the second connecting member and the third connecting member form an accommodating space, the first step portion is accommodated in the accommodating space, and the first step portion abuts against the second connecting member.

5. The transfer pipeline according to claim 4, characterized in that: It also includes a filling piece, the top end of the outer sleeve and the limiting assembly are located inside the filling piece, and the first heat insulation layer is filled in the filling piece.

6. The transfer pipeline according to claim 5, characterized in that: A second step portion is provided at the lower end of the outer sleeve, and an end surface of the third heat insulation layer is flush with an end surface of the second step portion.

7. The transfer pipeline according to claim 1, characterized in that: The first heat insulation layer is silicone cotton.

8. The transfer pipeline according to claim 1, characterized in that: The second heat insulation layer is an aluminum silicate fiberboard.

9. The transfer pipeline according to claim 1, characterized in that: The third heat insulation layer is wet-built zirconium silicon viscose cotton.

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