WO2015143947A1 - 一种轴向偏心排布的管内壁混合射流除鳞装置 - Google Patents

一种轴向偏心排布的管内壁混合射流除鳞装置 Download PDF

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Publication number
WO2015143947A1
WO2015143947A1 PCT/CN2015/071909 CN2015071909W WO2015143947A1 WO 2015143947 A1 WO2015143947 A1 WO 2015143947A1 CN 2015071909 W CN2015071909 W CN 2015071909W WO 2015143947 A1 WO2015143947 A1 WO 2015143947A1
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Prior art keywords
metal tube
wall
support rod
descaling device
nozzle
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PCT/CN2015/071909
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English (en)
French (fr)
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段明南
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宝山钢铁股份有限公司
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Priority to JP2017501448A priority Critical patent/JP6445674B2/ja
Priority to DE112015001515.9T priority patent/DE112015001515B4/de
Priority to US15/129,845 priority patent/US10888907B2/en
Priority to KR1020167027812A priority patent/KR102240067B1/ko
Publication of WO2015143947A1 publication Critical patent/WO2015143947A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B05B15/555—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids discharged by cleaning nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/68—Arrangements for adjusting the position of spray heads

Definitions

  • the invention belongs to the technical field of descaling the inner wall surface of a cold metal circular or profiled section, and is mainly used for continuously removing the scale of the inner wall surface of the cold metal pipe, and adopting a special design of a plurality of eccentric arrangements
  • the jet jet unit adopts a cold metal pipe and a descaling device to realize a simple flat relative motion to achieve uniform removal of the scale of the inner wall surface of the metal pipe. This case is the invention of the jet descaling technology on the inner wall surface of cold metal pipes.
  • the metal material forms a dense covering composed of metal oxide on the surface, commonly known as “scale skin”.
  • scale skin The existence of the scale skin will affect the further processing: on the one hand, the material Surface cracks are not easily found in advance, which causes quality problems in the finished product; on the other hand, it is easy to press the scales into the metal surface, causing surface quality problems; in addition, the presence of hard oxides accelerates the roll or drawing The wear of the machine brings difficulties to the anti-corrosion treatment of the bar before actual use.
  • the surface scale defects such as cracks and streaks of the exposed steel bar need to be removed. And expose the body, so that the production workers can find the defects and develop corresponding remedial measures.
  • the metal pipe needs to be completely removed from the surface scale after completion of the hot rolling forming and before entering the post process.
  • Descaling In the descaling method of metal pipe surface, in view of the cost and the maturity of the production process, domestic and foreign manufacturers use chemical wet cleaning to remove the surface scale.
  • Descaling there are usually two ways to carry out the process. Descaling, one is physical descaling method such as shot blasting and shot peening, and the other is chemical wet method, that is, using strong acid solution such as sulfuric acid, hydrochloric acid and hydrofluoric acid to achieve the removal of surface scales. .
  • the chemical wet pickling process in these methods has a bad production environment, and a large amount of residual acid generated by the production must be recycled.
  • the regeneration process must also generate corresponding exhaust gas emissions, and the exhaust gas contained therein contains a large amount of exhaust gas. Acidic, corrosive components such as HCL, SO 2, etc., directly pollute the atmosphere.
  • blasting or shot blasting method is used for descaling, usually because the inner surface space of the pipe has Limitation, shot peening or shot blasting usually requires a large operating space, so the result of this descaling process is not only caused by the surface of the pipe not being completely cleaned, but also a large amount of dust pollution, resulting in the work of the process workshop.
  • the environment is also very harsh and the effect is not good enough to meet the inner wall surface quality required by the subsequent process.
  • the series of cleaning techniques for the surface of the steel plate are not particularly suitable for the treatment of rods and wires, such as US20080108281 (A1), US20080182486 (A1), and US20090227184 (A1), and other Western European patents 5388602, Japanese Patent No. JP05092231A, JP09085329A, and JP2002102915.
  • the technique of surface scale removal is not particularly suitable for the treatment of rods and wires, such as US20080108281 (A1), US20080182486 (A1), and US20090227184 (A1), and other Western European patents 5388602, Japanese Patent No. JP05092231A, JP09085329A, and JP2002102915.
  • the object of the present invention is to design an axially eccentrically arranged tube inner wall mixing jet descaling device, which can realize a continuous, efficient and stable green descaling technology for the inner wall surface of the cold metal pipe.
  • the invention is directed to a process for continuously descaling the inner wall surface of a metal pipe, through an axial eccentric cloth
  • the simple horizontal relative movement of the mixed jet nozzle and the metal pipe can achieve the goal of effectively removing the scale of the inner wall surface of the metal pipe of a certain diameter.
  • an axially eccentrically arranged metal tube inner wall mixing jet descaling device of the present invention includes a support rod disposed in the metal tube, parallel to the central axis of the metal tube, and eccentrically disposed, and the center of the metal tube
  • the axes are not concentric; at least two nozzle units for jetting the mixed jets are arranged one behind the other along the length of the support rod, and each nozzle unit is provided with at least two mixed jet nozzles to support the rod axis as a center of the circle
  • the circumference of the support rod is evenly arranged, and the mixed jet nozzles of the nozzle units arranged one behind the other are staggered in the circumferential direction of the inner wall of the metal tube to be descaled to form a matrix of mixed jet nozzles, which can effectively cover the circumferential surface of the inner wall of the metal tube. Area.
  • the support rod includes a first support portion and a second support portion extending from the end of the first support portion by two times in a space to form a second support portion parallel to the first support portion, and the first and second support portions are both An eccentric arrangement, and the eccentricity values are the same, and are arranged at an angular offset on a circumference centered on the central axis of the metal tube; at least two nozzle units are respectively disposed on the first and second support portions, and the first and second support portions are respectively disposed
  • the mixed jet nozzles in the nozzle unit are staggered in the circumferential direction of the inner wall of the metal tube to be descaled to form a matrix of mixed jet nozzles, which is a circular effective descaling zone covering the circumferential surface of the inner wall of the metal tube.
  • the axes of the first to second support portions are all disposed on a circumference of a concentric circle centered on the central axis of the metal tube, and are uniformly arranged at an angular angle on the circumference.
  • the support rod includes a first support portion, and a second support portion parallel to the first support portion and a second support portion from the second support portion are extended from one end of the first support portion by two bendings in space.
  • the upper two bends extend to form a third support portion parallel to the second support portion, and the first, second and third support portions are all eccentrically arranged, and the eccentricity values are the same, and are centered on the central axis of the metal tube
  • An arrangement of angular misalignment on the circumference; the mixed jet nozzles in the nozzle units on the first, second and third support portions are staggered in the circumferential direction of the inner wall of the metal tube to be descaled to form a matrix of mixed jet nozzles.
  • a circular effective descaling zone covering the circumferential surface of the inner wall of the metal pipe.
  • the axes of the first, second and third support portions are each arranged on a circumference of a concentric circle centered on the central axis of the metal tube, and are uniformly angularly arranged on the circumference.
  • the mixed jet nozzle is axially at an angle to the central axis of the support rod.
  • the invention adopts an axial eccentric multi-unit mixing nozzle arrangement, relying on a spray unit and a tube
  • the simple flat relative movement of the inner wall of the material can achieve a uniform and stable descaling effect on the inner wall of the smaller inner diameter metal tube, and achieve the goal of efficient descaling.
  • the inner wall descaling of the cold pipe is realized by mixing the jets, and the descaling process is more environmentally friendly and green than the conventional descaling process, and the production cost has a stronger competitive advantage;
  • FIG. 1 is a schematic structural view of Embodiment 1 of the present invention.
  • Figure 2 is a side view of Figure 1.
  • Fig. 3 is a cross-sectional view taken along line A-A of Fig. 1;
  • Fig. 4 is a cross-sectional view taken along line B-B of Fig. 1;
  • Fig. 5 is a cross-sectional view taken along line C-C of Fig. 1;
  • FIG. 6 is a schematic structural diagram of Embodiment 2 of the present invention.
  • Figure 7 is a side view of Figure 6.
  • FIG. 8 is a schematic structural view of a support rod according to Embodiment 2 of the present invention.
  • Figure 9 is a cross-sectional view taken along line D-D of Figure 6;
  • Fig. 10 is a sectional view taken along line E-E of Fig. 6;
  • Figure 11 is a cross-sectional view taken along line FF of Figure 6;
  • an axially eccentrically arranged metal tube inner wall mixed jet descaling device comprises a support rod 1 disposed in a metal pipe 100 to be descaled, and a center of the metal pipe 100.
  • the axes are parallel and eccentrically arranged, different from the central axis of the metal tube; three nozzle units 2, 2', 2" for jetting the mixed jet are arranged one behind the other along the length of the support rod 1, each nozzle unit 2, 2' And 2" are provided with at least two mixed jet nozzles 21, 21', 21", which are evenly arranged along the circumference of the support rod 1 in such a manner that the axis of the support rod 1 is diverging around the center of the rod, and the nozzle units 2, 2 are arranged before and after.
  • the mixed jet nozzles of ', 2' are staggered in the circumferential direction of the inner wall of the metal pipe to be descaled to form a matrix of mixed jet nozzles, which is an effective descaling zone covering the circumferential surface of the inner wall of the metal pipe.
  • the support rod 1 and the inner wall of the metal tube 100 have a larger spacing and a smaller spacing, and the larger spacing is greater than the smaller spacing, that is, the spacing between the upper inner wall and the support rod is larger in the figure, and the lower side
  • the spacing between the inner wall and the support rod is a small pitch, and the upper inner wall and the lower inner wall are divided by the horizontal line of the support rod, and the mixed jet nozzles 21, 21', 21" are disposed inside the support rod 1 and the metal tube 100.
  • the support rod 1 includes a first support portion 11 and is formed by two bending extensions from the first support portion 11 .
  • the second support portion 12 parallel to the support portion 11 and the second support portion 12 extend from the end of the second support portion 12 to form a third support portion 13 parallel to the second support portion 12, and the first to third support portions 11 ⁇ 13 are all eccentrically arranged, and the eccentricity values are the same, and are arranged angularly offset on the circumference centered on the central axis of the metal pipe 100; the nozzle units 2, 2' on the first to third support portions 11 to 13,
  • the mixed jet nozzles in 2" are staggered in the circumferential direction of the inner wall of the metal pipe to be descaled to form a matrix of mixed jet nozzles, which is a circular effective descaling zone covering the inner circumferential surface of the metal pipe 100.
  • the axes of the first to third supporting portions 11 to 13 are all arranged on the circumference of a concentric circle centered on the central axis of the metal pipe 100, and are uniformly angularly arranged on the circumference.
  • the mixed jet nozzle is axially at an angle to the central axis of the support rod.
  • the nozzle unit of the invention is fixed on a support rod having an eccentric meander shape, and the mixed jet nozzles in each nozzle unit are arranged in a manner of diverging the respective centers, that is, the mixed jets are arranged in a divergent manner; each nozzle unit
  • the middle mixing nozzle is uniformly arranged in a typical eccentric divergence along the circumferential direction of the circular section of the pipe, and the value of the misalignment angle in the circumferential direction of the section between the two nozzles in the same nozzle unit is the same, that is, when the three nozzle units overlap According to the overlapping direction view, the value of the misalignment angle between the two adjacent nozzles after the overlap of the three single nozzle elements is the same in the circumferential direction of the cross section.
  • the invention fully utilizes the descaling effect of the mixed jet and the cross-sectional characteristics of the pipe, and realizes the continuous high-speed descaling of the pipe by means of the high-pressure jet.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Cleaning In General (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

一种轴向偏心排布的金属管内壁混合射流除鳞装置，其包括，一支撑杆（1），设置在金属管（100）内，与金属管中心轴线平行，且偏心布置，与金属管中心轴线不同心；至少两个用于喷射混合射流的喷嘴单元（2、2'、2"），沿支撑杆长度方向前后设置，每个喷嘴单元中设有至少两个混合射流喷嘴（21、21'、21"），以支撑杆轴线为圆心向四周发散的方式沿支撑杆圆周均匀布置，且，前后设置的喷嘴单元的混合射流喷嘴在待除鳞金属管内壁的圆周方向呈前后错开设置，形成一个混合射流喷嘴矩阵，成为可完全覆盖金属管内壁圆周面的有效除鳞区。该除鳞装置能实现对冷态金属管材的内壁表面进行连续、高效、稳定的绿色除鳞。

Description

一种轴向偏心排布的管内壁混合射流除鳞装置 技术领域
本发明属于冷态金属圆形或异形截面的管内壁表面除鳞的技术领域，主要用于实现对冷态金属管的内壁表面鳞皮进行连续性清除，通过一种特殊设计的多个偏心布置的射流喷射单元，采用冷态金属管材与除鳞装置实现简单的平直相对运动方式来实现金属管内壁表面的鳞皮均匀清除。本案是有关冷态金属管材内壁表面射流除鳞技术的发明创造。
背景技术
金属材料在热态轧制或热处理过程中会在表面形成一层由金属氧化物组成的致密覆盖物，俗称“鳞皮”，该鳞皮的存在对进一步加工处理会造成影响：一方面使材料的表面裂缝不易被提前发现，从而使加工出的成品存在质量问题；另一方面易将鳞皮压入金属表面，造成表面质量问题；此外，坚硬的氧化物的存在，会加速轧辊或拉拔机的磨损，同时为该棒材在实际使用之前的防腐处理带来了困难；另外，针对特种钢棒，为暴露钢棒的表面质量缺陷，如裂纹、条纹等，均需要将表面鳞皮清除并暴露肌体，如此才能便于生产工人发现其缺陷所在，并制定相应的补救措施。
基于此，金属管材在完成热轧成型之后且在进入后工艺处理之前，均需要对其表面鳞皮进行彻底清除。
金属管材的表面除鳞方式，鉴于成本与生产工艺的成熟性，目前国内外生产企业均采用化学湿法进行清洗的加工方式来清除表面鳞皮，对于管材来说，其通常有两种方式进行除鳞，一种为抛丸、喷丸等物理除鳞方式，另一种为化学湿法，即采用硫酸、盐酸及氢氟酸等强酸性溶液等方式，来实现对其表面鳞皮的清除。
这些方法中的化学湿法酸洗工艺，其生产环境恶劣，且因为生产而产生的大量残酸必须进行循环再生处理，目前算再生工艺也必然产生对应的废气排放，其排放的废气中含有大量的酸性、腐蚀性成分，如HCL、SO2等，直接污染大气。
而如果采用喷丸或抛丸方式进行除鳞，通常由于管材的内表面空间有 限，喷丸或抛丸方式通常需要较大的操作空间，因此这种除鳞工艺结果是不仅造成管材表面无法完全清理干净的同时，还带来了大量的粉尘污染，造成工艺生产车间的工作环境同样十分恶劣，且效果不佳，无法达到后续工艺所要求的内壁表面质量。
基于此，为解决管材的表面除鳞问题，科研工作者进行了大量的研究，研制了多种技术和设备，以替代这种化学方法去除金属表面的鳞皮，如电解除鳞、电解研削除鳞、放电除鳞、电子束除鳞、激光除鳞、研磨除鳞、反复弯曲除鳞以及上述不同方法组合的除鳞方法。这些方法在这些年的发展过程中，其中高压水射流除鳞技术发展最快，其工业化进程也越发明显。
通过查阅相关专利，也发现国外尤其是日本、德国等冶金技术发达国家，其虽然提出了众多的连续射流、磨刷除鳞技术如日本专利JP06108277A公开了在连续冷轧线上采用喷酸与刷辊组合使用的除鳞工艺、日本专利JP55034688A公开了一种联合PV轧制破鳞—混合磨料高压射流除鳞方式、日本专利JP57142710A、JP57068217A、JP59097711A、以及加拿大的TMW公司自2001年以后公开了一系列的针对钢板表面鳞皮的清除技术美国专利US20080108281(A1)、US20080182486(A1)以及US20090227184(A1)等，另外西欧US5388602、日本专利JP05092231A、JP09085329A以及JP2002102915等均没有提出一种有效处理棒、线材的表面鳞皮清除的技术。
发明内容
对于大直径金属管内壁除鳞，因为其管内壁尺寸较大，可充分满足射流除鳞工艺中喷嘴与射流所需的几何尺寸空间，故其可以采用简单的圆周方向均匀排布方案来满足内壁的均匀除鳞，而对于口径较小、空间受限的金属管内壁，同时又必须充分考虑射流喷嘴与介质供需管路的布置空间，如此则需要采用一种针对性的特殊偏心布置方案来实现内壁除鳞。通过公开文献与专利检索，截止目前还没有发现类似公开资料。
因此，本发明的目的是设计一种轴向偏心排布的管内壁混合射流除鳞装置，能实现对冷态金属管材的内壁表面进行连续、高效、稳定的绿色除鳞技术。
为达到上述目的，本发明的技术方案是：
本发明针对金属管材内壁表面进行连续除鳞的工艺，通过轴向偏心布 置方案，采用混合射流喷嘴与金属管材的简单平直相对运动方式，即可实现对一定直径的金属管材的内壁表面鳞皮进行有效清除的目标。
具体地，本发明的一种轴向偏心排布的金属管内壁混合射流除鳞装置，其包括，一支撑杆，设置在金属管内，与金属管中心轴线平行，且偏心布置，与金属管中心轴线不同心；至少两个用于喷射混合射流的喷嘴单元，沿支撑杆长度方向前后设置，每个喷嘴单元中设有至少两个混合射流喷嘴，以支撑杆轴线为圆心向四周发散的方式沿支撑杆圆周均匀布置，且，前后设置的喷嘴单元的混合射流喷嘴在待除鳞金属管内壁的圆周方向前后错开设置，形成一个混合射流喷嘴矩阵，成可覆盖金属管内壁圆周面的有效除鳞区。
进一步，所述的支撑杆包括第一支撑部及自第一支撑部一端通过空间上的两次弯折延伸形成与第一支撑部平行的第二支撑部，第一、第二支撑部均为偏心布置，且偏心值相同，并在以金属管中心轴线为圆心的圆周上呈角度错位的布置；第一、第二支撑部上分别设置至少两个喷嘴单元，第一、第二支撑部上的喷嘴单元中的混合射流喷嘴在待除鳞金属管内壁的圆周方向前后错开设置，形成一个混合射流喷嘴矩阵，成可覆盖金属管内壁圆周面的圆形有效除鳞区。
又，所述的第一～第二支撑部的轴线均布置在以金属管中心轴线为圆心的同心圆的圆周上，且在该圆周上均匀错位角度布置。
再有，所述的支撑杆包括第一支撑部、自第一支撑部一端通过空间上的两次弯折延伸形成与第一支撑部平行的第二支撑部及自第二支撑部一端通过空间上的两次弯折延伸形成与第二支撑部平行的第三支撑部，第一、第二以及第三支撑部均为偏心布置，且偏心值相同，并在以金属管中心轴线为圆心的圆周上呈角度错位的布置；第一、第二以及第三支撑部上的喷嘴单元中的混合射流喷嘴在待除鳞金属管内壁的圆周方向前后错开设置，形成一个混合射流喷嘴矩阵，成可覆盖金属管内壁圆周面的圆形有效除鳞区。
又，所述的第一、第二以及第三支撑部的轴线均布置在以金属管中心轴线为圆心的同心圆的圆周上，且在该圆周上均匀错位角度布置。
另外，所述的混合射流喷嘴轴向与支撑杆中心轴线成一角度。
本发明的优点如下：
本发明采用轴向偏心的多单元混合喷嘴布置方式，依托喷射单元与管 材内壁的简单平直相对运动方式，能实现对更小内径的金属管内壁的均匀、稳定的除鳞效果，达到高效除鳞目标。
通过混合射流的方式实现冷态管材的内壁除鳞，相对传统的除鳞工艺，具备更加环保、绿色的除鳞工艺，且生产成本具备更强的竞争优势；
附图概述
图1为本发明实施例一的结构示意图。
图2为图1的侧视图。
图3为图1的A-A剖视图。
图4为图1的B-B剖视图。
图5为图1的C-C剖视图。
图6为本发明实施例二的结构示意图。
图7为图6的侧视图。
图8为本发明实施例二中支撑杆的结构示意图。
图9为图6的D-D剖视图。
图10为图6的E-E剖视图。
图11为图6的F-F剖视图。
本发明的最佳实施方式
参见图1～图5，本发明的一种轴向偏心排布的金属管内壁混合射流除鳞装置，其包括，一支撑杆1，设置在待除鳞金属管100内，与金属管100中心轴线平行，且偏心布置，与金属管中心轴线不同心；三个用于喷射混合射流的喷嘴单元2、2’、2”，沿支撑杆1长度方向前后设置，每个喷嘴单元2、2’、2”中设有至少两个混合射流喷嘴21、21’、21”，以支撑杆1轴线为圆心向四周发散的方式沿支撑杆1圆周均匀布置，且，前后设置的喷嘴单元2、2’、2”的混合射流喷嘴在待除鳞金属管内壁的圆周方向前后错开设置，形成一个混合射流喷嘴矩阵，成可覆盖金属管内壁圆周面的有效除鳞区。支撑杆1与金属管100的内壁之间具有较大间距与较小间距，该较大间距大于该较小间距，即图中上侧内壁和支撑杆之间的间距为较大间距，下侧内壁和支撑杆之间的间距为较小间距，上侧内壁和下侧内壁以通过支撑杆的水平线来划分，混合射流喷嘴21、21’、21”设置在支撑杆1与金属管100的内 壁之间的较大间距的所述支撑杆侧。
参见图6～图11，其所示为本发明实施例二，所述的支撑杆1包括第一支撑部11、自第一支撑部11一端通过空间上的两次弯折延伸形成与第一支撑部11平行的第二支撑部12及自第二支撑部12一端通过空间上的两次弯折延伸形成与第二支撑部12平行的第三支撑部13，第一～第三支撑部11～13均为偏心布置，且偏心值相同，并在以金属管100中心轴线为圆心的圆周上呈角度错位的布置；第一～第三支撑部11～13上的喷嘴单元2、2’、2”中的混合射流喷嘴在待除鳞金属管内壁的圆周方向前后错开设置，形成一个混合射流喷嘴矩阵，成可覆盖金属管100内壁圆周面的圆形有效除鳞区。
又，所述的第一～第三支撑部11～13的轴线均布置在以金属管100中心轴线为圆心的同心圆的圆周上，且在该圆周上均匀错位角度布置。
另外，所述的混合射流喷嘴轴向与支撑杆中心轴线成一角度。
本发明喷嘴单元均固定在一根呈现偏心曲折形状的支撑杆上，每个喷嘴单元中的混合射流喷嘴均按照各自的圆心发散的方式布置，即将混合射流形成发散的方式排布；各喷嘴单元中混合喷嘴沿管材圆形断面的圆周方向上呈典型偏心发散状的均匀布置，同一喷嘴单元中的每两个喷嘴之间沿断面圆周方向上的错位角度值相同，即三个喷嘴单元重叠时，通过重叠方向视图可知三个单喷嘴元重叠后的每两个相邻喷嘴之间沿断面圆周方向的错位角度值相同。
如此，当管材沿轴线方向平直运动时，且所有喷嘴单元进行喷射且保持静止不动，当管材内壁完全通过所有喷嘴单元之后，则管材内壁即实现了鳞皮完全清除。
本发明充分利用混合射流除鳞效果与管材的截面特性，通过这种高压射流的方式来实现对管材的连续式高速除鳞。

Claims (12)

  1. 一种金属管内壁混合射流除鳞装置，其特征在于，包括，
    一支撑杆，设置在金属管内；
    至少两个用于喷射混合射流的喷嘴单元，沿支撑杆长度方向且于金属管内壁的轴向偏心位置设置在所述支撑杆上，每个喷嘴单元中设有混合射流喷嘴，所述混合射流喷嘴设置在所述支撑杆与所述内壁之间的较大间距的所述支撑杆侧，所述至少两个喷嘴单元的混合射流喷嘴以支撑杆轴线为圆心呈发散的方式布置。
  2. 如权利要求1所述的金属管内壁混合射流除鳞装置，其特征在于，所述至少两个喷嘴单元的混合射流喷嘴形成一个混合射流喷嘴矩阵，提供可覆盖金属管内壁圆周面的有效除磷区。
  3. 如权利要求1所述的金属管内壁混合射流除鳞装置，其特征在于，从所述支撑杆轴向来看，所述至少两个喷嘴单元的混合射流喷嘴以所述圆心向四周发散的方式均匀布置。
  4. 如权利要求1所述的金属管内壁混合射流除鳞装置，其特征在于，所述的支撑杆包括用于分别设置所述喷嘴单元的第一支撑部及自第一支撑部一端经过空间上的弯折延伸形成的第二支撑部，第一、第二支撑部的轴心线相对于待除鳞金属管中心轴线偏心。
  5. 如权利要求4所述的金属管内壁混合射流除鳞装置，其特征在于，第二支撑部自第一支撑部一端经过空间上的两侧弯折延伸形成，第一支撑部平行于第二支撑部。
  6. 如权利要求4所述的金属管内壁混合射流除鳞装置，其特征在于，第一支撑部、第二支撑部平行于金属管中心轴线。
  7. 如权利要求4所述的金属管内壁混合射流除鳞装置，其特征在于，所述的第一支撑部、第二支撑部的轴线均布置在以金属管中心轴线为圆心的同心圆的圆周上，且在该圆周上均匀错位角度布置。
  8. 如权利要求4所述的金属管内壁混合射流除鳞装置，其特征在于，所述的支撑杆还包括用于设置所述喷嘴单元的、自第二支撑部一端经过空间上的弯折延伸形成的第三支撑部，第三支撑部的轴心线相对于待除鳞金属管中心轴线偏心。
  9. 如权利要求8所述的金属管内壁混合射流除鳞装置，其特征在于，第三支撑部自第二支撑部一端经过空间上的两次弯折延伸形成，所述第三支撑部平行于所述第二支撑部。
  10. 如权利要求8所述的金属管内壁混合射流除鳞装置，其特征在于，所述的第一、第二以及第三支撑部的轴线均布置在以金属管中心轴线为圆心的同心圆的圆周上，且在该圆周上均匀错位角度布置。
  11. 如权利要求1所述的金属管内壁混合射流除鳞装置，其特征在于，所述的混合射流喷嘴轴向与支撑杆中心轴线成一角度。
  12. 如权利要求1所述的金属管内壁混合射流除鳞装置，其特征在于，每个所述喷嘴单元中设置有至少两个混合射流喷嘴。
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