WO2018035965A1 - 一种双路并联空气穿孔用复合割嘴 - Google Patents

一种双路并联空气穿孔用复合割嘴 Download PDF

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Publication number
WO2018035965A1
WO2018035965A1 PCT/CN2016/104261 CN2016104261W WO2018035965A1 WO 2018035965 A1 WO2018035965 A1 WO 2018035965A1 CN 2016104261 W CN2016104261 W CN 2016104261W WO 2018035965 A1 WO2018035965 A1 WO 2018035965A1
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cutting nozzle
air
cutting
composite
inner cavity
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PCT/CN2016/104261
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English (en)
French (fr)
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蔡诚
董香龙
倪振兴
洪静
费永云
凌步军
薛华军
朱鹏程
冷志斌
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江苏亚威机床股份有限公司
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Publication of WO2018035965A1 publication Critical patent/WO2018035965A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K7/00—Cutting, scarfing, or desurfacing by applying flames

Definitions

  • the invention relates to the technical field of perforating nozzles, in particular to a composite cutting nozzle for double parallel air perforation.
  • the cutting nozzle is a flame cutting gun cutting nozzle used in metallurgical factories. It consists of three channels of preheating oxygen, gas and cutting oxygen. The cutting nozzle is divided into two parts: normal cutting and perforating process.
  • the existing cutting nozzle Cutting carbon plates and stainless steel sheets (below 5mm) is not a problem; cutting thick plates, the cutting section will be degraded due to unstable airflow, and the air pressure during piercing is normally lower than the cutting air pressure.
  • the cutting auxiliary gas switches between oxygen, nitrogen and air. For example, when cutting carbon plates, oxygen or air perforation and oxygen cutting are used; when cutting stainless steel plates, nitrogen or air perforation and nitrogen cutting are used. The switching of the cutting assist gas for different perforations will affect the working efficiency. To this end, we have optimized the existing cutting nozzle to provide a two-way parallel air piercing compound cutting nozzle to solve the above technical defects.
  • a composite cutting nozzle for double parallel air perforation comprising a cutting nozzle body, wherein the cutting nozzle has a cutting nozzle composite layer at a center position, the cutting nozzle compounding
  • a peripheral auxiliary channel is symmetrically disposed on the left and right sides of the layer, and the body cavity of the cutting nozzle is provided with a mixing chamber, and the gas outlet end of the cutting nozzle composite layer and the peripheral auxiliary channel are connected to the mixing chamber, and the cutting nozzle body edge
  • the inner cavity is provided with a passage for air perforation, the top end of the passage for air perforation is provided with a perforated air inlet, the bottom of the inner portion of the cutting nozzle is provided with a main spout, and the passage for the air perforation and the mixing chamber are respectively connected with the main spout Connected.
  • the air perforation passage is not less than three sets, and the air perforation passage is an upper width and a lower narrow structure.
  • the multiple of the inner diameter of the channel for the air perforation and the inner diameter of the lower channel is 1.2 times, and the channel for air perforation is arranged in a ring shape around the main nozzle.
  • the cutting nozzle composite layer is an inner layer tapered structure, and the peripheral auxiliary channels are arranged symmetrically around the cutting nozzle composite layer.
  • the cutting nozzle body is composed of a parallel inner cavity and a tapered inner cavity.
  • the beneficial effects of the present invention are: the composite cutting nozzle for the parallel parallel air perforation, after the cutting auxiliary gas enters the cutting nozzle, a part is blown out through the inner cavity of the composite layer, and the other part is blown out through the outer layer passage of the composite layer.
  • the uniform nozzle is blown out by the main nozzle of the cutting nozzle body, and the composite cutting nozzle greatly improves the quality of the cutting section of the medium and thick plate, and the annular groove and the channel for at least 3 air perforations are added to the cutting nozzle body, so that there is no dead angle.
  • the air is blown, and the air perforation passage is designed to have an upper width and a narrow structure, which can increase the air flow rate and facilitate the blowing of the welding slag.
  • Figure 1 is a schematic view of the structure of the present invention.
  • 1 cutting nozzle body 1 cutting nozzle body, 2 cutting nozzle composite layer, 3 peripheral auxiliary channel, 4 air perforation channel, 5 perforated air inlet, 6 main nozzle, 7 mixing chamber.
  • a composite cutting nozzle for double parallel air perforation comprising a cutting nozzle body 1 , wherein a cutting nozzle composite layer 2 is disposed at a center position of the cutting nozzle body 1 .
  • the peripheral auxiliary channel 3 is symmetrically disposed on the left and right sides of the cutting nozzle composite layer 2, and the inner cavity of the cutting nozzle body 1 is provided with a mixing chamber 7, and the outlet end of the cutting nozzle composite layer 2 and the peripheral auxiliary channel 3 are connected to each other.
  • the inner cavity of the cutting nozzle body 1 is provided with an air perforation passage 4, and the air perforating passage 4 has a perforated air inlet 5 at the top end thereof, and the cutting nozzle body 1 has a main body at the bottom of the chamber
  • the spout 6, the air perforation passage 4 and the mixing chamber 7 are both in communication with the main spout 6.
  • the air perforation passage 4 is not less than three groups, and the air perforation passage 4 is an upper width and a lower narrow structure, and the inner diameter of the upper and lower passages of the air perforation passage 4 is 1.2 times, and the air is
  • the perforation passages 4 are arranged in a ring-like radial shape around the main spouts 6, and the cutting nozzle composite layer 2 is an inner layer conical structure, and the peripheral auxiliary passages 3 are arranged symmetrically around the cutting nozzle composite layer 2, the cutting nozzle body 1 It consists of a parallel inner cavity and a tapered inner cavity.
  • the composite cutting nozzle in use, after the cutting auxiliary gas enters the cutting nozzle, a part is blown out through the inner cavity of the cutting nozzle composite layer 2, and another part is blown out through the peripheral auxiliary channel 3, and finally uniformly blown out by the main nozzle 6 of the cutting nozzle body 1, the composite cutting nozzle
  • the quality of the cutting section of the medium and heavy plate is greatly improved, and an annular groove and at least 3 channels for air perforation are added to the cutting nozzle body 1, so that the air can be blown without a dead angle, and the channel 4 for air perforation is used.
  • the narrow channel is used for guiding the gas, and at the same time, the gas flow rate from the narrow passage to the plate surface is increased, the air pressure is increased, and the welding slag is facilitated.
  • the auxiliary gas is perforated with air
  • the auxiliary pipe cutting auxiliary gas is closed, and the air is connected in parallel.
  • the air passage enters the annular groove of the cutting nozzle body 1, and directly reaches the main nozzle 6 of the cutting body 1 through the air perforation passage 4, and provides air for perforation.
  • the air perforation is used instead of the high-pressure nitrogen perforation in the air.
  • the oxygen acts as a combustion aid, making the perforation faster.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)

Abstract

一种双路并联空气穿孔用复合割嘴，包括割嘴本体（1），所述割嘴本体（1）内腔居中位置开有割嘴复合层（2），所述割嘴复合层（2）左右两侧对称设有外围辅助通道（3），所述割嘴本体（1）内腔设有混合腔室（7），所述割嘴复合层（2）和外围辅助通道（3）的出气端均连通于混合腔室（7），所述割嘴本体（1）边缘处内腔开有空气穿孔用通道（4），所述空气穿孔用通道（4）和混合腔室（7）均与主喷口（6）连通，切割辅助气体进入割嘴后，一部分通过复合层内腔吹出，另一部分通过复合层外层通道吹出，最终统一由割嘴本体（1）的主喷口（6）吹出，复合割嘴对中厚板切割断面的质量有很大的提升，在割嘴本体上增加环形槽和至少3路空气穿孔用通道（4），这样可以无死角地对其吹气，便于吹走焊渣。

Description

一种双路并联空气穿孔用复合割嘴 技术领域
本发明涉及穿孔喷嘴技术领域，具体为一种双路并联空气穿孔用复合割嘴。
背景技术
割嘴是一种用于冶金工厂的火焰切割枪割嘴，它由预热氧、燃气和切割氧三个通道组成，割嘴在切割过程分正常切割和穿孔过程两部分，现有的割嘴切割碳板、不锈钢类的薄板(5mm以下)问题不大；切割厚板，切割断面会由于气流不稳导致质量下降，穿孔过程气压正常低于切割气压，实际操作中，针对不同类型的板料，切割辅助气体会进行氧气、氮气、空气的切换。如切割碳板时会采用氧气或空气穿孔、氧气切割；切割不锈钢板时会采用氮气或空气穿孔、氮气切割。不同穿孔用切割辅助气体的切换，会影响工作效率。为此，我们对现有的割嘴进行优化，提供了一种双路并联空气穿孔用复合割嘴来解决上述技术缺陷。
发明内容
本发明的目的在于提供一种双路并联空气穿孔用复合割嘴，以解决上述背景技术中提出的问题。
为实现上述目的，本发明提供如下技术方案：一种双路并联空气穿孔用复合割嘴，包括割嘴本体，所述割嘴本体内腔居中位置开有割嘴复合层，所述割嘴复合层左右两侧对称设有外围辅助通道，所述割嘴本体内腔设有混合腔室，所述割嘴复合层和外围辅助通道的出气端均连通于混合腔室，所述割嘴本体边缘处内腔开有空气穿孔用通道，所述空气穿孔用通道顶端开有穿孔空气入口，所述割嘴本体内腔底部设有主喷口，所述空气穿孔用通道和混合腔室均与主喷口连通。
优选的，所述空气穿孔用通道不少于3组，且空气穿孔用通道为上宽下窄结构。
优选的，所述空气穿孔用通道上通道和下通道内径的倍数差为1.2倍，且空气穿孔用通道围绕主喷口呈环形放射状排列。
优选的，所述割嘴复合层为内层锥形结构，所述外围辅助通道围绕割嘴复合层呈中心对称排列。
优选的，所述割嘴本体由平行内腔和锥形内腔组成。
与现有技术相比，本发明的有益效果是：本双路并联空气穿孔用复合割嘴，切割辅助气体进入割嘴后，一部分通过复合层内腔吹出，另一部分通过复合层外层通道吹出，最终统一由割嘴本体的主喷口吹出，复合割嘴对中厚板切割断面的质量有很大的提升，在割嘴本体上增加环形槽和至少3路空气穿孔用通道,这样可以无死角地对其吹气，空气穿孔用通道设计为上宽下窄式结构，能够增加空气流速，便于吹走焊渣。
附图说明
图1为本发明结构示意图。
图中：1割嘴本体、2割嘴复合层、3外围辅助通道、4空气穿孔用通道、5穿孔空气入口、6主喷口、7混合腔室。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1，本发明提供一种技术方案：一种双路并联空气穿孔用复合割嘴，包括割嘴本体1，所述割嘴本体1内腔居中位置开有割嘴复合层2，所述割嘴复合层2左右两侧对称设有外围辅助通道3，所述割嘴本体1内腔设有混合腔室7，所述割嘴复合层2和外围辅助通道3的出气端均连通于混合腔室7，所述割嘴本体1边缘处内腔开有空气穿孔用通道4，所述空气穿孔用通道4顶端开有穿孔空气入口5，所述割嘴本体1内腔底部设有主喷口6，所述空气穿孔用通道4和混合腔室7均与主喷口6连通。
其中，所述空气穿孔用通道4不少于3组，且空气穿孔用通道4为上宽下窄结构，所述空气穿孔用通道4上通道和下通道内径的倍数差为1.2倍，且空气穿孔用通道4围绕主喷口6呈环形放射状排列，所述割嘴复合层2为内层锥形结构，所述外围辅助通道3围绕割嘴复合层2呈中心对称排列，所述割嘴本体1由平行内腔和锥形内腔组成。
具体的，使用时，切割辅助气体进入割嘴后，一部分通过割嘴复合层2内腔吹出，另一部分通过外围辅助通道3吹出，最终统一由割嘴本体1的主喷口6吹出，复合割嘴对中厚板切割断面的质量有很大的提升，在割嘴本体1上增加环形槽和至少3路空气穿孔用通道4,这样可以无死角地对其吹气，空气穿孔用通道4为由宽变窄的结构，宽通道用于储存气体， 窄通道用于气体的导向，同时使气体经过窄通道到板面的气流量变大，气压变大，便于吹走焊渣，若辅助气体使用空气进行穿孔，主管道切割辅助气体关闭，空气从并联的气路进入割嘴本体1的环形槽，通过空气穿孔用通道4直接抵达切割本体1的主喷口6，提供穿孔用空气，在对不锈钢板穿孔时，用空气穿孔代替高压氮气穿孔，空气中的氧气起到助燃作用，使得穿孔更快捷。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。

Claims (5)

  1. 一种双路并联空气穿孔用复合割嘴，包括割嘴本体(1)，其特征在于：所述割嘴本体(1)内腔居中位置开有割嘴复合层(2)，所述割嘴复合层(2)左右两侧对称设有外围辅助通道(3)，所述割嘴本体(1)内腔设有混合腔室(7)，所述割嘴复合层(2)和外围辅助通道(3)的出气端均连通于混合腔室(7)，所述割嘴本体(1)边缘处内腔开有空气穿孔用通道(4)，所述空气穿孔用通道(4)顶端开有穿孔空气入口(5)，所述割嘴本体(1)内腔底部设有主喷口(6)，所述空气穿孔用通道(4)和混合腔室(7)均与主喷口(6)连通。
  2. 根据权利要求1所述的一种双路并联空气穿孔用复合割嘴，其特征在于：所述空气穿孔用通道(4)不少于3组，且空气穿孔用通道(4)为上宽下窄结构。
  3. 根据权利要求1或2所述的一种双路并联空气穿孔用复合割嘴，其特征在于：所述空气穿孔用通道(4)上通道和下通道内径的倍数差为1.2倍，且空气穿孔用通道(4)围绕主喷口(6)呈环形放射状排列。
  4. 根据权利要求1所述的一种双路并联空气穿孔用复合割嘴，其特征在于：所述割嘴复合层(2)为内层锥形结构，所述外围辅助通道(3)围绕割嘴复合层(2)呈中心对称排列。
  5. 根据权利要求1所述的一种双路并联空气穿孔用复合割嘴，其特征在于：所述割嘴本体(1)由平行内腔和锥形内腔组成。
PCT/CN2016/104261 2016-08-26 2016-11-01 一种双路并联空气穿孔用复合割嘴 WO2018035965A1 (zh)

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JPH11141822A (ja) * 1997-11-07 1999-05-28 Koike Sanso Kogyo Co Ltd ピアシング用のノズル
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