WO2014180179A1 - Connecting pipe fitting for pipeline - Google Patents

Connecting pipe fitting for pipeline Download PDF

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Publication number
WO2014180179A1
WO2014180179A1 PCT/CN2014/072064 CN2014072064W WO2014180179A1 WO 2014180179 A1 WO2014180179 A1 WO 2014180179A1 CN 2014072064 W CN2014072064 W CN 2014072064W WO 2014180179 A1 WO2014180179 A1 WO 2014180179A1
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WO
WIPO (PCT)
Prior art keywords
taper
sleeve
hole
pipe
nut
Prior art date
Application number
PCT/CN2014/072064
Other languages
French (fr)
Chinese (zh)
Inventor
孙海潮
Original Assignee
Sun Haichao
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CN201310160451.7A priority Critical patent/CN103604013B/en
Priority to CN201310160451.7 priority
Application filed by Sun Haichao filed Critical Sun Haichao
Publication of WO2014180179A1 publication Critical patent/WO2014180179A1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/04Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection
    • F16L19/043Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection with additional sealing means

Abstract

Disclosed is a connecting pipe fitting for a pipeline, comprising a nut (3), a connector outer frustum (5) and a connecting pipe bell mouth (7), wherein the nut has an inner tapered bore (6), a tapered sleeve (9) is provided in the nut inner tapered bore (6), the tapered sleeve (9) is a hollow tapered sleeve sheathing hole, a bottom part of the tapered sleeve sheathing hole is provided with a tapered sleeve inner tapered bore (18), a flared groove (24) is provided on the tapered sleeve inner tapered bore (18), a tapered sleeve sheathing hole wall (20) together with a tapered sleeve outer tapering oblique face forms a tapered sleeve tapering oblique angle (21), the connector outer frustum (5) squeezes the bell mouth (7) and squeezes the tapered sleeve inner tapered bore (18), and the tapered sleeve tapering oblique angle (21) was squeezed between the nut inner tapered bore (6) and a connecting pipe (10), sealing the connecting pipe (10) and forming a metallic hard seal between the connector outer frustum (5) and the tapered sleeve inner tapered bore (18), and the connecting pipe bell mouth (7) is squeezed between the connector outer frustum (5) and the flared groove (24), sealing the flared groove. The connecting pipe fitting for a pipeline has the advantages of fast and convenient sealed connection, low requirements in terms of sealing techniques, high sealing performance, being applicable to the connection of pipelines of various materials, and being completely interchangeable with existing connecting nuts.

Description

一种管路连接管件  Pipe connection pipe fitting
技术领域 Technical field
[0001 ]本发明属于机械制造领域, 仅涉及一种将管子连接成管路的连接管件, 特别是仅涉及一种流体传输管路的连接 管件。  [0001] The present invention is in the field of mechanical manufacturing, and relates only to a connecting pipe member for connecting pipes into pipes, and more particularly to a connecting pipe member of a fluid transfer pipe.
背景技术 Background technique
管与管、 管与其它管路连接件之间的连接, 有焊接连接, 螺紋连接, 法兰连接, 扩喇叭口连接, 卡套式管接头连接等方 法。 其中扩喇叭口连接,也称扩口连接, 翻边连接, 具有连接工艺要求、 连接成本较低, 连接方法便捷的优点, 伹密封 压力较低, 密封可靠性较差, 通常仅能使用在密封压力低于 8MPa的管路连接上。 扩喇叭口连接管件通常包括一个螺母 , 一个带外锥台的接头, 有时还带有衬套。 扩喇叭口连接的密封原理是将连接管端口套进螺母,然后将端口扩成喇叭口 ,通过螺母上的内螺纹与接头上的外螺紋螺旋连接,由螺母内锥孔将连接管喇叭口挤压在接头外锥台上形成密封连接。 连 接时挤压密封的是连接管喇叭口, 连接管喇叭口被夹持在螺母内锥孔与连接件外锥台之间, 螺母内锥孔与接头外锥台无 直接接触, 这是扩喇叭口连接的技术特征。 扩喇叭口连接的缺点是喇叭口端很容易被扩裂, 喇叭口面较粗糙且承压能力 较弱, 主要密封承压部位喇叭口与连接管结合部的喇叭口折弯口会产生集中应力, 当受到腐蚀和疲劳振动时, 该部位最 易出现松动、 破裂而泄漏, 现有技术也有采用衬套对喇叭口加以保护的设计, 伹衬套仅是在挤压密封中起对喇叭口的保 护作用, 衬套与连接管之间为松动套接, 存在间隙, 相互无挤压作用, 无密封性能。 在扩喇叭口连接时, 连接管要先穿 套在螺母和衬套中, 连接管与螺母、 衬套之间为松动配合, 存在间隙, 与外界是相通的, 外界大气, 水气, 7j对喇叭口 拆弯口的侵蚀, 始终存在, 天长日久, 侵蚀到了一定程度时, 喇叭口拆弯口会因腐蚀产生松动、 破裂而泄漏, 特别对于 接头材料与连接管材料为异种金属的连接时, 又多了一种电化学腐蚀破坏, 腐蚀破坏性尤为明显, 如在锏接头与铝连接 管的扩喇叭口连接中, 铜接头与铝连接管喇叭口直接压接接触, 铜铝间的电化学腐蚀连接后就始终存在着, 喇叭口拆弯 口则最容易因电化学腐蚀而很快产生破裂泄漏, 因此, 扩喇叭口连接方式是不可直接应用于铜接头与铝连接管的连接上 的。 此外管子连接工作时往往处于一定的振动状态, 管子本身也会因外界环境的干扰产生摇晃松动的可能, 由于连接后 管子本身与螺母套孔之间有间隙, 通常螺母中套接连接管的套孔孔长仅为 4mm左右, 而螺母底部的内锥孔与套孔是相 连着的, 因此间隙短且与连接管喇叭口拆弯口相通, 任何引起连接管的振动, 摇晃都会几乎无衰减地传递到喇叭口拆弯 口上, 这些都会加剧喇叭口拆弯口的疲劳应力, 各种振动, 震动带来的振动疲劳累积到一定程度时会松动连接, 降低密 封性能, 直到产生破裂而彻底失去密封作用, 扩喇叭口连接仅在喇叭口处产生密封, 为单密封连接, 一旦喇叭口密封产 生泄漏, 就意味着连接管件失去密封性能。 因此,寻找一种连接密封压力更高, 密封性能更可靠, 防腐蚀防振防松动性 能优越, 可直接用于异种金属间管路连接而无电化学腐蚀的连接管件,就成了人们一直渴望解决的技术难题了。 Connections between pipes and pipes, pipes and other pipe connections, such as welded joints, threaded joints, flanged joints, flared joints, and ferrule joints. The flared port connection, also known as the flared connection, the flanged connection, has the advantages of connection process requirements, low connection cost, convenient connection method, low sealing pressure, poor sealing reliability, and can usually only be used in sealing. Pipe connections with a pressure below 8 MPa. Flared flare fittings typically include a nut, a fitting with an outer frustum, and sometimes a bushing. The sealing principle of the flared port connection is to fit the connecting pipe port into the nut, and then expand the port into a bell mouth. The internal thread on the nut is screwed to the external thread on the joint, and the connecting pipe bell mouth is squeezed by the inner cone hole of the nut. Pressing on the outer frustum of the joint forms a sealed connection. When the connection is sealed, the connecting tube bell mouth is connected, and the connecting tube bell mouth is clamped between the inner cone hole of the nut and the outer frustum of the connecting piece, and the inner cone hole of the nut has no direct contact with the outer frustum of the joint, which is a flared speaker. Technical characteristics of the mouth connection. The disadvantage of the flared port connection is that the flared end is easily cracked, the flared surface is rough and the pressure bearing capacity is weak, and the main sealing sealing portion of the bell mouth and the connecting portion of the connecting portion of the bell joint will produce concentrated stress. When subjected to corrosion and fatigue vibration, the part is most prone to looseness, cracking and leakage. The prior art also has a design that uses a bushing to protect the bell mouth. The bushing is only used in the squeeze seal to the bell mouth. The protection function is that the bushing and the connecting pipe are loosely sleeved, there is a gap, no mutual pressing effect, no sealing performance. When the flared port is connected, the connecting pipe should be put in the nut and the bushing first. The connecting pipe and the nut and the bushing are loosely matched, there is a gap, and the outside is in communication with the outside atmosphere, water and gas, 7j pairs The erosion of the flared opening of the bell mouth always exists. For a long time, when the erosion reaches a certain level, the flared opening of the bell mouth will leak due to corrosion, and the joint will be leaked, especially when the joint material and the connecting pipe material are dissimilar metals. There is an electrochemical corrosion damage, especially the corrosion destructiveness. For example, in the flare connection of the tantalum joint and the aluminum connecting tube, the copper joint is directly in contact with the bell mouth of the aluminum connecting tube, and the electrochemical corrosion between the copper and aluminum After the connection, it always exists. The flared opening of the bell is most likely to cause cracking and leakage due to electrochemical corrosion. Therefore, the flare connection is not directly applicable to the connection of the copper joint and the aluminum connecting tube. In addition, the pipe is often in a certain vibration state when the pipe is connected, and the pipe itself may be shaken loose due to the interference of the external environment. Since there is a gap between the pipe itself and the nut sleeve hole after the connection, the sleeve hole of the connecting pipe is usually sleeved in the nut. The hole length is only about 4mm, and the inner cone hole at the bottom of the nut is connected with the sleeve hole. Therefore, the gap is short and communicates with the bellows of the connecting tube. Any vibration or wobble caused by the connecting tube will be transmitted almost without attenuation. To the flared opening of the bell mouth, these will aggravate the fatigue stress of the flared opening of the bell mouth. When the vibration fatigue caused by various vibrations and vibrations accumulates to a certain extent, it will loosen the connection and reduce the sealing performance until the crack is broken and the sealing is completely lost. The flared port connection only creates a seal at the bell mouth. It is a single-sealed connection. Once the bell mouth seal leaks, it means that the connecting pipe has lost its sealing performance. Therefore, it is a long-awaited search for a connecting seal with higher pressure, more reliable sealing performance, superior corrosion resistance, anti-vibration and anti-loose performance, and can be directly used for connecting pipes between dissimilar metals without electrochemical corrosion. The technical problem solved.
发明内容 Summary of the invention
[0003] 本发明的目的正是针对上述扩喇叭口连接存在的问题, 在扩喇叭口连接的基础上, 在不改变现有连接接头结构 的前提下, 而专门提供的管路连接管件, 彻底解决了上述扩喇叭口连接方法存在的问题: 连接密封压力较低, 密封性能 可靠差, 不能防腐蚀, 防振防松动性低, 不可直接用于异种金属间管路连接的问题。  [0003] The object of the present invention is to solve the problem of the above-mentioned flared port connection. On the basis of the flared port connection, the pipe connecting pipe fittings are specially provided without changing the structure of the existing connecting joint. The invention solves the problems of the above-mentioned flared port connection method: the connection sealing pressure is low, the sealing performance is poor, the corrosion resistance is not corrosion-proof, the anti-vibration and the anti-loose property are low, and the problem of the pipeline connection between dissimilar metals cannot be directly used.
[0004]本发明的目的是通过以下方式来实现的: The object of the invention is achieved in the following ways:
一种管路连接管件, 包括螺母, 接头, 接头上的外锥台和连接管喇叭口, 其特征是: 螺母为一具有内锥孔的螺母, 螺母 内锥孔内设置有配套使用的锥套, 锥套为中空的锥套套孔, 锥套套孔底部设有锥套内锥孔, 锥套套孔壁与锥套外锥斜面 组成锥套锥斜角, 接头外锥台挤压连接管喇叭口, 由连接管喇叭口挤压锥套内锥孔并将锥套锥斜角挤压在螺母内锥孔与 连接管之间实现锥套套孔与连接管的连接管密封, 连接管喇叭口被挤压于接头外锥台与锥套内锥孔之间实现喇叭口密封 , 锥套锥斜角挤压移动方向与螺母旋进方向呈反方向。 The utility model relates to a pipe connecting pipe fitting, which comprises a nut, a joint, an outer frustum and a connecting pipe bell mouth on the joint, wherein: the nut is a nut having an inner taper hole, and the tapered taper sleeve is arranged in the inner taper hole of the nut The taper sleeve is a hollow taper sleeve hole, and the taper sleeve hole bottom is provided with a taper sleeve inner taper hole, the taper sleeve sleeve hole wall and the taper sleeve outer cone slope surface form a cone sleeve cone angle, and the joint outer cone table is squeezed to connect the tube bell mouth, The inner cone hole of the taper sleeve is pressed by the bell mouth of the connecting pipe, and the taper angle of the taper sleeve is squeezed between the taper hole of the nut and the connecting pipe to realize the sealing pipe joint between the taper sleeve hole and the connecting pipe, and the bell mouth of the connecting pipe is squeezed The bell mouth seal is realized between the outer frustum of the joint and the inner taper hole of the taper sleeve, and the direction of the taper angle of the cone sleeve is opposite to the direction of the nut screwing.
[0005]本发明还可以通过这样的方式来实现: The invention can also be implemented in such a way that:
1 ,一种管路连接管件, 包括螺母, 接头,接头上的外锥台和连接管喇叭口, 其特征是: 螺母为一具有内锥孔的螺母, 螺 母内锥孔内设置有配套使用的锥套, 锥套为中空的锥套套孔, 锥套套孔底部设有锥套内锥孔, 锥套内锥孔上设有喇叭槽 , 锥套套孔壁与锥套外锥斜面组成锥套锥斜角, 接头外锥台挤压连接管喇叭口和挤压锥套内锥孔并将锥套锥斜角挤压在 螺母内锥孔与连接管之间实现锥套套孔与连接管的连接管密封和接头外锥台与锥套内锥孔之间的金属硬密封, 连接管喇 叭口被挤压于接头外锥台与锥套内锥孔上的喇叭槽之间实现喇叭槽密封, 锥套锥斜角挤压移动方向与螺母旋进方向呈反 方向。  1 . A pipeline connecting pipe member, comprising a nut, a joint, an outer frustum on the joint and a connecting pipe bell mouth, wherein: the nut is a nut having an inner taper hole, and the inner taper hole of the nut is provided with an auxiliary device. The taper sleeve is a hollow taper sleeve hole, and the taper sleeve hole bottom is provided with a taper sleeve inner taper hole, the taper sleeve inner cone hole is provided with a speaker slot, the taper sleeve hole wall and the taper sleeve outer cone slope face form a cone sleeve cone oblique Angle, the outer frustum of the joint squeezes the bell mouth of the connecting pipe and the inner taper hole of the pressing taper sleeve, and squeezes the taper angle of the taper sleeve between the taper hole of the nut and the connecting pipe to realize the sealing pipe seal of the taper sleeve hole and the connecting pipe And the metal hard seal between the outer frustum of the joint and the inner taper hole of the taper sleeve, the bell mouth of the connecting pipe is squeezed between the outer frustum of the joint and the speaker groove on the inner taper hole of the taper sleeve to realize the bell groove seal, the cone sleeve cone The direction of the oblique extrusion is opposite to the direction in which the nut is screwed.
[0006] 2,锥套内锥孔锥斜角等于接头外锥台锥斜角或锥套内锥孔锥斜角小于接头外锥台锥斜角 0到 15度。  [0006] 2, the cone angle inside the taper sleeve cone is equal to the taper angle of the outer cone cone of the joint or the taper angle of the cone cone inside the taper sleeve is smaller than the taper angle of the outer cone cone of the joint by 0 to 15 degrees.
[0007] 3,接头外锥台底径小于等于锥套底径, 锥套底径小于等于螺母内锥孔底径, 锥套高小于等于螺母内锥孔高 , 锥套锥斜角小于等于螺母内锥孔锥斜角。 [0007] 3, the outer diameter of the outer frustum of the joint is less than or equal to the bottom diameter of the taper sleeve, the bottom diameter of the taper sleeve is less than or equal to the bottom diameter of the inner taper hole of the nut, the height of the taper sleeve is less than or equal to the height of the inner cone of the nut, and the taper angle of the taper sleeve is less than or equal to the nut. Inner cone hole cone angle.
[0008] 4,螺母内锥孔锥斜角小于 12度。 [0008] 4, the inner cone angle of the nut is less than 12 degrees.
[0009] 5,锥套孔高度和螺母内锥孔高度均大于 3mm,锥套套孔高大于 2mm。  [0009] 5, the height of the taper sleeve hole and the height of the taper hole in the nut are both greater than 3 mm, and the height of the taper sleeve is greater than 2 mm.
[0010]本发明中的流体包括液体和气体, 管件是指将管子连接成管路的零件。 本发明接头外锥台挤压连接管喇叭口 , 由连接管喇叭口挤压锥套内锥孔并将锥套锥斜角挤压在螺母内锥孔与连接管之间实现锥套套孔与连接管的连接管密封 简称为连接管密封, 连接管喇叭口被挤压于接头外锥台与锥套内锥孔之间实现喇叭口密封简称为喇叭口密封, 接头外锥 台挤压连接管喇叭口和挤压锥套内锥孔并将锥套锥斜角挤压在螺母内锥孔与连接管之间实现锥套套孔与连接管的连接管 密封和接头外锥台与锥套内锥孔之间的金属硬密封简称为连接管双密封, 连接管喇叭口被挤压于接头外锥台与锥套内锥 孔上的喇叭槽之间实现喇叭槽密封简称为喇叭槽密封。 本发明的连接管密封, 连接管双密封, 喇叭口密封, 喇叭槽密封 的结构设计, 是一个互为联系, 互为作用, 互为因果的多重密封结构。 锥套套孔壁与锥套外锥斜面组成锥套锥斜角是指 锥套套孔壁的投影线与锥套外锥斜面投影线的夹角, 因此, 锥套锥斜角也就是锥套外锥斜面的锥斜角, 在实施时锥套锥 斜角是指用来锥进螺母内锥孔与连接管之间密封的锥套锥斜角所形成的锥套尖角。 本发明的锥斜角均为相应的锥孔,锥 台,锥套, 喇叭口,喇叭槽的中心线与其锥斜面投影线的夹角, 因此, 锥套套孔壁与锥套外锥斜面组成的锥套锥斜角也就 是锥套套孔中心线与锥套外锥斜面的夹角, 如果没有锥套套孔, 就没有锥套上的锥套锥斜角, 也就没有锥套锥斜角被挤 压在螺母内锥孔与连接管之间的连接管密封, 所以, 锥套套孔和锥套锥斜角是实现本发明的必要技术特征。 在连接管密 封时, 锥套锥斜角被挤压位移的方向与螺母螺紋连接移动的方向相反, 当锥套锥斜角被挤压在螺母内锥孔和连接管之间 达到一定的密封压力, 锥套锥斜角会受到巨大的阻力而无法位移时, 与锥套锥斜角相连的锥套内锥孔对喇叭口的反作用 力会骤然增大, 锥套反过来通过锥套内锥孔挤压挤实喇叭口, 实现喇叭口密封。 因此, 锥套套孔底部设有锥套内锥孔的 结构设计, 实质上是通过将锥套套孔与锥套内锥孔连为一体而将连接管密封, 连接管双密封, 喇叭口密封, 喇叭槽密封 联成互为联系, 互为作用, 互为因果的多重密封的结构设计。 原有的扩喇叭口连接, 力矩用力不当, 过大, 过猛, 喇叭 口制作工艺, 喇叭口材料质量, 壁厚等因素, 都有可能造成挤压喇叭口破裂而不能密封, 但本发明的多重密封结构设计 , 当力矩用力不当, 过大, 过猛造成喇叭口破裂时, 对喇叭口密封来讲, 密封当然是失败了, 但造成喇叭口密封失败的 力矩, 却会起到进一步提高连接管密封, 连接管双密封的作用, 确保在喇叭口密封失效时密封性能仍可达到一个更高的 密封能力上。 本发明设计的锥套孔高可以不受结构限制而沿中心线方向任意加长, 从而可以加大锥套套孔与连接管, 锥 套外锥斜面与螺母内锥孔的挤压密封面, 由于本发明的所有密封均为面挤压, 挤压密封面加大了, 造成喇叭口密封失败 的过大力矩, 对连接管密封, 连接管双密封都是有利的, 这就会进一步提高连接管密封的密封性能, 直至达到目标密封 压力, 实现本发明的发明目的。 扩喇叭口连接对施加力矩的大小较难把握控制, 常常会出现拧力不足和过拧紧现象, 拧 力不足则达不到密封, 过拧紧则会压坏喇叭口而泄漏, 伹本发明以面挤压为主, 且挤压面大都承压能力较强, 因此可以 无所顾忌地施加力矩直到达到理想的密封为止。 锥套锥斜角挤压密封移动方向与螺母旋进方向呈反方向,是指螺母与接 头螺纹连接旋进往接头方向移动的同时, 锥套锥斜角作与螺母移动方向相反方向的移动, 这体现了本发明锥套锥斜角是 在螺母内锥孔中与螺母内锥孔作相对位移的挤压运动而产生密封压力进而压縮变形箍紧连接管产生连接管密封的技术特 征。 锥套套孔的形状应与连接管的形状一致, 通常连接管为圆管, 因此锥套套孔为直圆柱内孔, 锥套套孔孔径, 仅需略 大于连接管的外径, 以满足良好密封的需要。 螺母内锥孔内设置有配套使用的锥套, 配套使用, 是指螺母内锥孔的孔底 径, 锥斜角, 孔高, 端径与锥套相应位置作匹配设计, 以使连接管密封时获得理想的密封性能, 配套使用也表明, 螺母 内锥孔与锥套二者在实现本发明目的上互为作用, 缺一不可。 [0010] The fluid in the present invention includes a liquid and a gas, and the tubular member refers to a member that connects the tubes into a pipeline. The joint outer frustum extrusion connecting pipe bell mouth of the invention The taper hole of the taper sleeve is pressed by the bell mouth of the connecting pipe, and the taper angle of the taper sleeve is squeezed between the taper hole of the nut and the connecting pipe to realize the sealing of the taper sleeve hole and the connecting pipe. The tube bell mouth is squeezed between the outer frustum of the joint and the inner taper hole of the taper sleeve to realize the bell mouth seal for short as the bell mouth seal, the outer frustum of the joint squeezes the bell mouth of the connecting pipe and the inner taper hole of the extrusion taper sleeve and the cone The taper oblique angle is squeezed between the taper hole of the nut and the connecting pipe to realize the connecting pipe seal of the taper sleeve hole and the connecting pipe, and the metal hard seal between the outer frustum of the joint and the inner taper hole of the taper sleeve is simply referred to as double sealing of the connecting pipe The connecting tube bell mouth is squeezed between the outer frustum of the joint and the speaker groove on the inner taper hole of the taper sleeve to realize the speaker groove sealing is simply referred to as a bell groove seal. The connecting pipe seal of the invention, the double sealing of the connecting pipe, the sealing of the bell mouth, and the structural design of the bell groove sealing are a multiple sealing structure which are mutually connected, mutually acting, and mutually causal. Cone sleeve hole wall and cone sleeve outer cone slope surface Cone sleeve cone angle refers to the angle between the projection line of the cone sleeve hole wall and the cone sleeve outer cone slope projection line. Therefore, the cone sleeve cone angle is also the cone sleeve outer cone The taper angle of the bevel, in the implementation, the taper angle of the taper is the taper angle formed by the taper angle of the taper sleeve used to seal the inner taper hole of the nut and the connecting pipe. The taper angle of the present invention is the corresponding angle of the tapered hole, the frustum, the taper sleeve, the bell mouth, the center line of the horn groove and the projection line of the cone inclined surface, and therefore, the hole of the cone sleeve and the outer cone of the cone sleeve The taper angle of the taper sleeve is also the angle between the center line of the taper sleeve hole and the outer cone slope of the taper sleeve. If there is no taper sleeve hole, there is no taper angle of the taper sleeve on the taper sleeve, and no taper cone angle is squeezed. The connecting tube between the taper hole and the connecting tube is sealed, so that the taper sleeve hole and the taper taper angle are necessary technical features for realizing the present invention. When the connecting pipe is sealed, the taper angle of the taper sleeve is displaced in the opposite direction to the threaded connection of the nut, and the taper angle of the taper sleeve is squeezed between the taper hole of the nut and the connecting pipe to achieve a certain sealing pressure. When the taper angle of the taper sleeve is subjected to great resistance and cannot be displaced, the reaction force of the taper hole of the taper sleeve connected to the taper angle of the taper sleeve will suddenly increase, and the taper sleeve is reversely passed through the taper hole inside the taper sleeve. Squeeze and squeeze the bell mouth to achieve the bell mouth seal. Therefore, the bottom of the taper sleeve hole is provided with a structural design of the inner taper hole of the taper sleeve, and the connecting tube is sealed by integrally connecting the taper sleeve hole with the inner taper hole of the taper sleeve, the connecting tube is double sealed, the bell mouth is sealed, and the horn is sealed. The groove seals are connected to each other, interacting with each other, and causing multiple causal multiple seals. The original flared port connection, improper torque, excessively large, too strong, the bell mouth making process, the material quality of the bell mouth, the wall thickness and other factors may cause the squeezing bell mouth to rupture and not seal, but the invention Multi-seal structure design, when the torque is improperly applied, too large, too strong, causing the bell mouth to rupture, the seal is of course a failure for the bell mouth seal, but the torque that causes the bell mouth seal failure will further improve the connection. The tube is sealed and the double seal of the connecting tube ensures that the sealing performance can still achieve a higher sealing capacity when the bell seal fails. The height of the taper sleeve designed by the invention can be arbitrarily lengthened along the center line direction without being restricted by the structure, so that the taper sleeve hole and the connecting tube, the outer tapered cone of the taper sleeve and the squeeze sealing surface of the inner cone hole of the nut can be enlarged, All the seals of the invention are surface extrusion, the extrusion sealing surface is enlarged, and the excessive torque which causes the bell mouth to fail to seal, the sealing of the connecting pipe and the double sealing of the connecting pipe are advantageous, which further improves the sealing of the connecting pipe. The sealing performance is achieved until the target sealing pressure is reached, achieving the object of the invention. The expansion flare connection is difficult to control the magnitude of the applied torque. Insufficient tightening and over-tightening often occur. If the tightening force is insufficient, the seal will not be achieved. If the tightening is too tight, the bell mouth will be crushed and leaked. The extrusion is dominant, and the pressing surface is mostly pressure-bearing, so the torque can be applied without any fear until the desired seal is achieved. The moving direction of the taper angle taper seal is opposite to the direction in which the nut is screwed. It means that the nut and the joint thread are screwed into the joint direction, and the taper angle of the taper sleeve moves in the opposite direction to the nut moving direction. This embodies the technical feature that the taper angle of the taper sleeve of the present invention is a pressing movement in the inner taper hole of the nut relative to the inner taper hole of the nut to generate a sealing pressure, thereby compressing and deforming the connecting tube to produce a joint tube seal. The shape of the taper sleeve hole should be the same as the shape of the connecting tube. Usually, the connecting tube is a round tube. Therefore, the taper sleeve hole is a straight cylindrical inner hole, and the taper sleeve hole diameter is only slightly larger than the outer diameter of the connecting tube to meet a good seal. need. The taper sleeve used in the inner cone hole of the nut is used together. It refers to the hole bottom diameter of the taper hole in the nut, the taper angle, the hole height, and the end diameter and the corresponding position of the taper sleeve are matched to design, so that the connecting pipe is sealed. When the ideal sealing performance is obtained, the matching use also shows that both the inner cone hole and the tapered sleeve of the nut play each other in the purpose of achieving the object of the present invention, and are indispensable.
[001 1]喇叭口拆弯口是扩喇叭口连接最易发生破裂而泄漏的部位, 原有的扩喇叭口连接, 螺母与接头外锥台压紧喇叭 口时, 由于连接管是套接在螺母, 衬套中的, 连接管与螺母, 衬套之间必然存在套孔间隙, 喇叭口拆弯口正是处在此间 隙上, 当接头外锥台挤压喇叭口时, 喇叭口拆弯口所承受的挤压力最大, 而喇叭口拆弯口另一侧则是无支撑力的间隙 , 因此, 螺母连接时力矩较难控制, 拧力不足达不到密封目的, 过拧紧就有可能压裂喇叭口拆弯口的危险。 即使是暂时 没有破裂, 喇叭口拆弯口的承压性能因扩口变形, 挤压变形而下降很大, 随着各种污水污浊湿空气通过间隙对喇叭口拆 弯口的长期侵蚀, 加上连接管工作时的振动等, 喇叭口拆弯口就成了最易松动, 破裂而产生泄漏的隐患处了。 但由于采 用了连接管喇叭口被挤压于接头外锥台与锥套内锥孔之间的设计结构,当连接管密封时, 喇叭口拆弯口锥套一侧的锥套 内锥孔是完全严密地挤压贴合着喇叭口的, 此时锥套起到一个衬托保护作用, 提高了喇叭口拆弯口的承压能力, 也正因 为连接管密封的结构, 使得螺母与连接管之间的套孔间隙被挤压变形的锥套锥斜角封闭, 隔绝了喇叭口拆弯口与外界的 相通, 彻底消除了外界湿气, 污水, 及振动对喇叭口拆弯口的影响, 电化学腐蚀发生的必要条件是要处于湿空气, 水之 中, 隔绝了喇叭口拆弯口与外界的相通, 电化学腐蚀的发生失去必要条件, 也就彻底消除了接头与异种金属连接管连接 时会产生电化学腐蚀的问题。 现有技术表明, 螺母螺旋推动锥套挤压密封时, 锥套会受到一个侧向扭矩作用, 而侧向扭 矩对密封是起松动密封的破坏作用的, 侧向扭矩过大会造成密封不严, 所以应尽量减小侧向扭矩, 如果没有喇叭口密封 和喇叭槽密封, 就成了没有喇叭口的连接管直接受到接头外锥台的挤压, 当连接管套进锥套中时, 若是连接管管端露出 锥套一部分, 接头外锥台挤推的是连接管, 此时连接管与锥套是松动的, 连接管很容易被挤推而滑离锥套, 当连接管管 端被挤推到与锥套内锥孔底齐平时, 锥套才会受到挤压, 此时螺母螺紋连接旋进时给锥套带来的侧向扭矩, 就会在锥套 与螺母内锥孔发生相对位移获得密封的同时因侧向扭矩相对旋转而松动密封, 即边密封, 边松动, 无法达到理想的密封 。 但利用喇叭口与连接管连为一体的特点, 设计成喇叭口密封和喇叭槽密封, 喇叭口连同连接管, 锥套三者是同步同方 向挤压移动的, 连接管就不可能脱离喇叭口与锥套产生相对滑动滑离锥套了。 由于本发明以面挤压密封为主, 喇叭口 , 连接管, 锥套获得的侧向扭矩带来的相对旋转, 可以起到磨平光滑密封面的作用, 反而有利于面挤压密封。 当锥套锥 斜角, 连接管与螺母内锥孔因相互间产生巨大挤压摩擦力而停止反方向相对移动时, 此时仅需略对螺母施加一点扭矩 , 接头外锥台进一步对喇叭口、 锥套内锥孔挤压, 金属硬密封, 喇叭口密封, 喇叭槽密封性能会骤然提高, 密封可靠性 更强。 [001 1]The bell mouth opening and closing port is the part where the flared port is most prone to rupture and leaks. The original flared port is connected. When the nut and the outer frustum of the joint are pressed against the bell mouth, the connecting pipe is sleeved at In the nut, in the bushing, between the connecting pipe and the nut, there must be a clearance between the bushings. The bellows opening and closing is located in the gap. When the outer frustum of the joint squeezes the bell mouth, the bell mouth is opened. The mouth is subjected to the largest pressing force, and the other side of the bell mouth is a non-supporting gap. Therefore, the torque is difficult to control when the nut is connected, and the tightening force is insufficient to achieve the sealing purpose. The danger of fracturing the bell mouth to open the bend. Even if it is not broken for a while, the pressure-receiving performance of the flared opening of the bell mouth is greatly reduced due to the deformation of the flared joint, and the long-term erosion of the flared opening of the bell mouth with the dirty air passing through the gap. When the connecting pipe is vibrating during operation, the flared opening of the bell mouth becomes the most vulnerable to loosening and rupture. However, since the connecting pipe bell mouth is pressed between the outer frustum of the joint and the inner taper hole of the taper sleeve, when the connecting pipe is sealed, the inner taper hole of the taper sleeve on the side of the bell mouth of the bell mouth is It is completely tightly pressed and attached to the bell mouth. At this time, the taper sleeve serves as a backing protection function, which improves the pressure bearing capacity of the flared opening of the bell mouth, and also because of the structure of the joint pipe seal, so that the nut and the connecting pipe are The gap between the sleeve holes is closed by the angle of the taper cone of the extrusion deformation, which isolates the connection between the bell mouth and the outside, completely eliminates the influence of external moisture, sewage, and vibration on the bellows. The necessary condition for the occurrence of chemical corrosion is to be in the humid air and water, and to isolate the connection between the flared opening of the bell mouth and the outside. The occurrence of electrochemical corrosion loses the necessary conditions, and the connection between the joint and the dissimilar metal connecting pipe is completely eliminated. It will cause problems of electrochemical corrosion. The prior art shows that when the nut spirally pushes the taper sleeve to press and seal, the taper sleeve is subjected to a lateral torque, and the lateral torque acts as a loose seal for the seal, and the lateral torque excessively causes the seal to be lax. Therefore, the lateral torque should be minimized. If there is no bell seal and bell groove seal, the connecting pipe without the bell mouth is directly squeezed by the outer frustum of the joint. When the connecting pipe is inserted into the taper sleeve, if it is connected The pipe end exposes a part of the taper sleeve, and the outer frustum of the joint pushes the connecting pipe. At this time, the connecting pipe and the taper sleeve are loose, and the connecting pipe is easily pushed and pulled away from the taper sleeve, and the pipe end of the connecting pipe is squeezed. When the pusher is flush with the bottom of the taper hole, the taper sleeve will be squeezed. At this time, the lateral torque of the taper sleeve when the nut thread is screwed in will be opposite to the taper hole of the taper sleeve. When the displacement is sealed, the seal is loosened due to the relative rotation of the lateral torque, that is, the edge is sealed and the side is loose, and the ideal seal cannot be achieved. However, the bell mouth and the connecting pipe are integrated into one, and the bell mouth seal and the bell groove seal are designed. The bell mouth is connected with the connecting pipe and the taper sleeve, and the three are synchronously moved in the same direction, and the connecting pipe cannot be separated from the bell mouth. The sliding sleeve is slid away from the taper sleeve. Since the invention is mainly based on a face extrusion seal, the bell mouth The relative rotation caused by the lateral torque obtained by the connecting tube and the taper sleeve can play the role of smoothing the smooth sealing surface, and is conducive to the surface extrusion sealing. When the cone of the taper sleeve is inclined, the connecting cone and the inner cone of the nut stop moving in opposite directions due to the large pressing friction force between them. At this time, only a little torque is applied to the nut, and the outer frustum of the joint is further connected to the bell mouth. The inner taper hole extrusion of the taper sleeve, the metal hard seal, the bell mouth seal, the speaker groove sealing performance will be suddenly improved, and the sealing reliability is stronger.
[0012] 螺母为一具有内锥孔的螺母, 即螺母内锥孔与连接管所形成的密封空间, 是专门设计在螺母内孔上的, 然后再 利用本发明设计的锥套锥斜角挤压在该密封空间中的结构设计, 确保了密封与现有接头外锥台不发生任何结构上的矛盾 冲突, 从而达到不改变现有接头结构的前提下, 实施本发明的目的, 使得本发明的连接螺母与现有技术的连接螺母具有 了完全的互换性。 在锥套锥斜角挤压在螺母内锥孔与连接管所形成的密封空间的同时, 也达到了将喇叭口拆弯口与外界 完全隔离的目的。  [0012] The nut is a nut with an inner cone hole, that is, a sealing space formed by the inner cone hole and the connecting tube of the nut, which is specially designed on the inner hole of the nut, and then is tapped by the taper cone of the design of the present invention. The structural design pressed in the sealed space ensures that the seal does not have any structural conflicts with the existing joint outer frustum, so that the object of the present invention can be achieved without changing the existing joint structure, so that the present invention The connecting nut is completely interchangeable with the prior art connecting nut. At the same time as the cone angle of the taper sleeve is squeezed in the sealing space formed by the cone hole and the connecting pipe in the nut, the purpose of completely separating the bell mouth opening and the outside from the outside is also achieved.
[0013]锥套内锥孔锥斜角等于接头外锥台锥斜角, 就可以将喇叭口严密地挤压固定在接头外锥台和锥套内锥孔之间 , 实现密封连接的同时还起到紧固连接作用。 连接管扩口后的喇叭口由喇叭口折弯口到喇叭口端口, 管壁是渐渐变薄的 , 将锥套内锥孔锥斜角设计成小于接头外锥台锥斜角 0到 15度, 连接时锥套内锥孔与接头外锥台形成的就是一个渐渐变 窄的空间, 对应着渐渐变薄的喇叭口, 连接时密封和坚固连接效果更好。 实际应用时, 根据接头外锥台, 锥套, 连接管 等相关配合部分的结构尺寸, 选定锥套内锥孔锥斜角, 本发明推荐锥套内锥孔锥斜角设计成小于接头外锥台锥斜角 1到 8度之间, 以接头与螺母螺旋连接到需要通过工具施加力矩时, 接头外锥台的一部分接触到或将要接触到锥套内锥孔为 佳,将要接触到是指两者最短距离在 0.2mm内。 这样, 在连接时, 接头外锥台的一部分就会严密地压紧在锥套内锥孔上 , 形成金属硬密封, 密封连接性能得到进一步提高和保证。  [0013] The taper angle of the cone taper in the taper sleeve is equal to the taper angle of the outer taper cone of the joint, so that the bell mouth can be tightly pressed and fixed between the outer frustum of the joint and the taper hole of the taper sleeve, thereby achieving the sealed connection. Plays a tight connection. The flared mouth of the connecting pipe is bent from the bell mouth to the bell mouth port, and the pipe wall is gradually thinner, and the taper angle of the taper hole taper is designed to be smaller than the taper angle of the outer frustum cone of the taper to 0 to 15 degrees. When connecting, the inner tapered hole of the taper sleeve and the outer frustum of the joint form a gradually narrowing space, corresponding to the gradually thinning bell mouth, and the sealing and the firm connection effect are better when connected. In practical application, according to the structural dimensions of the joint fitting part such as the outer frustum, the taper sleeve and the connecting pipe, the taper angle of the cone taper inside the taper sleeve is selected, and the taper angle of the cone taper inside the taper sleeve is designed to be smaller than the joint. The angle of the frustum cone is between 1 and 8 degrees. When the joint is screwed to the nut and the torque needs to be applied by the tool, a part of the outer frustum of the joint is in contact with or will be in contact with the inner cone of the taper sleeve. It will be contacted. It means that the shortest distance between the two is within 0.2mm. In this way, when connecting, a part of the outer frustum of the joint is tightly pressed on the inner taper hole of the taper sleeve to form a metal hard seal, and the sealing connection performance is further improved and guaranteed.
[0014]锥套内锥孔上设有喇叭槽, 将连接管喇叭口置于锥套内锥孔上的喇叭槽内, 金属硬密封的密封性更高, 更可靠 。 连接时喇叭槽的深度应与连接管壁厚相接近, 喇叭槽长度应与连接管喇叭口长度相接近, 以便喇叭口被完全置于喇叭 槽中,实施本发明时, 建议喇叭槽长度取 1到 3mm, 喇叭口扩口长度以此为准而定, 即可满足喇叭槽密封要求。 喇叭口 因扩口而密度变小, 挤压时易于变形, 本发明实施时建议将喇叭槽深度设计为喇叭口置于喇叭槽后凸出喇叭槽 0. 1到 0.4mm高为佳, 这样, 在密封连接时, 首先是喇叭槽密封, 然后是连接管双密封与喇叭槽密封的同步密封, 可以确保 每种密封都能达到最佳效果。 连接时, 还可在接头外锥台与喇叭口和锥套内锥孔之间垫密封垫圈的办法调整相互间的挤 压变形硬度来达到更理想的密封。  [0014] The inner taper hole of the taper sleeve is provided with a horn groove, and the bell mouth of the connecting pipe is placed in the horn groove on the inner taper hole of the taper sleeve, and the metal hard seal has higher sealing property and is more reliable. When connecting, the depth of the speaker slot should be close to the wall thickness of the connecting pipe. The length of the speaker slot should be close to the length of the bell mouth of the connecting pipe, so that the bell mouth is completely placed in the speaker slot. When implementing the present invention, it is recommended to take the length of the speaker slot 1 3mm, the length of the flared flare is determined by this, which can meet the requirements of the speaker groove seal. The height of the horn is reduced by the flaring, and the squeezing is easy to be deformed. In the practice of the present invention, it is recommended that the horn of the horn be designed to be placed in the horn of the horn. In the case of a sealed connection, the first is the horn groove seal, and then the simultaneous sealing of the connecting tube double seal and the horn seal ensures optimum performance for each seal. When connecting, the sealing flange between the outer frustum of the joint and the bell mouth and the inner taper of the taper sleeve can be adjusted to achieve a more ideal seal.
[0015]当接头外锥台底径小于等于锥套底径, 锥套底径小于等于螺母内锥孔底径, 锥套高小于等于螺母内锥孔高, 锥 套锥斜角小于等于螺母内锥孔锥斜角时, 接头外锥台就会部分或完全挤入螺母内锥孔内, 锥套就会完全被挤入螺母内锥 孔中, 接头外锥台的挤压力将全部用于连接密封, 确保了本发明的高密封连接。 上述的等于小于中的小于, 以加工工艺 条件允许的范围内尽可能的取接近等于值, 锥套的锥斜角取小于螺母内锥孔的锥斜角 0到 2度为佳。 锥套底径小于等于螺 母内锥孔底径, 锥套才可全部被挤压入螺母内锥孔之中, 否则, 当锥套底径大于螺母内锥孔底径时, 就有可能出现锥套 被螺母内锥孔顶住而无法挤动, 从而无法彻底完成挤压密封, 达不到本发明密封目的和效果的情况。 本发明的螺母可 制作成外六角形, 便于扳手施加力矩连接安装。  [0015] When the bottom diameter of the outer frustum of the joint is less than or equal to the bottom diameter of the taper sleeve, the bottom diameter of the taper sleeve is less than or equal to the bottom diameter of the inner taper hole of the nut, and the height of the taper sleeve is less than or equal to the height of the taper hole in the nut, and the taper angle of the taper sleeve is less than or equal to the inner diameter of the nut. When the cone cone is inclined, the outer frustum of the joint will be partially or completely squeezed into the inner cone of the nut, and the taper sleeve will be completely squeezed into the inner cone of the nut. The pressing force of the outer frustum of the joint will be used for all. The connection seal ensures a highly sealed connection of the present invention. The above is equal to less than the medium less than the value allowed within the range allowed by the processing conditions. The taper angle of the taper sleeve is preferably less than 0 to 2 degrees of the taper angle of the inner taper hole of the nut. The bottom diameter of the taper sleeve is less than or equal to the bottom diameter of the inner taper hole of the nut, and the taper sleeve can all be squeezed into the inner cone hole of the nut. Otherwise, when the diameter of the taper sleeve bottom is larger than the bottom diameter of the inner taper hole of the nut, a cone may appear. The sleeve is held by the inner cone hole of the nut and cannot be squeezed, so that the squeeze seal cannot be completely completed, and the sealing purpose and effect of the present invention are not obtained. The nut of the present invention can be made into an outer hexagon shape, which is convenient for the wrench to be applied with a torque connection.
[0016]螺母内锥孔的锥斜角小于 12度的设计, 决定了螺母在满足强度的前提下取较薄的壁厚就可确保螺母获得较高的 内锥孔高, 内锥孔越高, 在相应锥套套孔高的锥套锥斜角的挤压连接时, 意味着锥套锥斜角与螺母内锥孔和连接管的圆 周密封面越大, 获得的密封性能越强。 现有技术中的螺母内锥孔, 受螺母结构和喇叭口锥斜角的限制, 不可能做得很大 , 连接管喇叭口要穿过螺母才能制作, 制作好后需返回抵压在螺母内锥孔上, 所以喇叭口端直径必须小于螺母螺紋内孔 的小径, 挤压密封连接的喇叭口挤压面过小, 一旦螺母内锥孔, 喇叭口, 接头外锥台的挤压面上出现工艺、 材质问题 , 扩喇叭口连接方法不当、 施加力矩过大的问题, 就很容易导致喇叭口挤压密封失败。 但螺母内锥孔的锥斜角小于 12度 的设计, 使得锥套锥斜角与连接管和螺母内锥孔的圆周密封面获得较大面积, 且可通过调小锥斜角, 加长螺母内锥孔孔 高的设计, 再通过加大挤压力, 达到需要的密封要求。 螺母内锥孔的锥斜角小于 12度的设计,还可使得锥套整体壁厚较 薄, 易于被挤压变形, 以充分变形密封在螺母内锥孔与连接管所形成的空间中。  [0016] The taper angle of the taper hole in the nut is less than 12 degrees, which determines that the nut can obtain a higher inner cone height when the nut is made to meet the strength, and the inner cone is higher. When the corresponding taper sleeve has a high taper taper angle, it means that the taper angle of the taper sleeve and the inner circumferential sealing surface of the nut and the connecting tube are larger, and the sealing performance obtained is stronger. In the prior art, the inner cone hole of the nut is limited by the nut structure and the bevel angle of the bell mouth, and it is impossible to make it large. The bell mouth of the connecting pipe can be made through the nut, and it needs to be returned to the nut after being manufactured. On the taper hole, the diameter of the flare end must be smaller than the diameter of the inner hole of the nut thread. The pressing surface of the bell seal of the squeeze seal connection is too small. Once the nut is inside the taper hole, the bell mouth, the extrusion surface of the outer frustum of the joint appears. Process, material problems, improper flare connection methods, excessive torque application, it is easy to cause the bell mouth squeeze seal failure. However, the taper angle of the taper hole of the nut is less than 12 degrees, so that the taper angle of the taper sleeve and the circumferential sealing surface of the taper hole of the connecting pipe and the nut obtain a larger area, and the taper angle can be adjusted by the small taper angle The high design of the taper hole is achieved by increasing the pressing force to achieve the required sealing requirements. The design of the taper angle of the inner taper hole of the nut is less than 12 degrees, and the inner wall thickness of the taper sleeve is thinner, and is easily deformed by extrusion, so as to be fully deformed and sealed in the space formed by the taper hole and the connecting pipe in the nut.
[0017]锥套孔高度和螺母内锥孔高度均大于 3mm, 锥套套孔高大于 2mm, 是为了确保锥套锥斜角与连接管密封时获 得一个足以满足密封要求的圆周密封面, 特别是锥套套孔高, 如果太矮, 很有可能造成连接管密封达不到密封要求。 实 际应用时, 锥套套孔高建议大于 6mm。  [0017] The height of the taper sleeve hole and the height of the taper hole in the nut are both greater than 3 mm, and the height of the taper sleeve is greater than 2 mm, in order to ensure that the taper angle of the taper sleeve and the joint tube are sealed to obtain a circumferential sealing surface sufficient to meet the sealing requirements, especially The taper sleeve has a high hole. If it is too short, it is very likely that the joint pipe seal will not meet the sealing requirements. In practical applications, the height of the taper sleeve is recommended to be greater than 6 mm.
[0018]本发明的锥斜角为相应的锥孔,锥台, 锥套, 喇叭口和喇叭槽的中心线与其锥斜面线的夹角。 本发明应用时, 喇 叭口的锥斜角, 锥套内锥孔的锥斜角应与接头外锥台的锥斜角相应, 从而确保本发明与现有技术中螺母的完全互换性。 本发明是为专门应用在具有外锥台的接头上设计的, 通常接头外锥台锥斜角为 0到 90度之间, 大于 90度, 接头外锥台就 成了具有内锥孔的接头了, 此时, 仅需在具有内锥孔的接头上套接一个两头为外锥台的过渡接头, 将具有内锥孔的接头 过渡到具有外锥台的接头, 就可完全一样地实施本发明了。  [0018] The cone angle of the present invention is the angle between the center line of the corresponding tapered hole, the frustum, the taper sleeve, the bell mouth and the horn groove and the cone slope line thereof. When the invention is applied, the taper angle of the bell mouth and the taper angle of the taper hole in the taper sleeve should correspond to the taper angle of the outer frustum of the joint, thereby ensuring complete interchangeability of the present invention with the nut of the prior art. The invention is specially designed for the joint with the outer frustum. Generally, the taper angle of the outer frustum of the joint is between 0 and 90 degrees, and is greater than 90 degrees, and the outer frustum of the joint becomes the joint with the inner taper hole. At this time, it is only necessary to sleeve a transition joint having two outer flanges on the joint having the inner tapered hole, and to convert the joint having the inner tapered bore to the joint having the outer frustum, and the same can be implemented. invented.
[0019]本发明可在螺母内锥孔尾部设有一内圆凸台, 与连接管, 锥套锥斜角围合成一个环槽, 可确保螺母内锥孔和锥 套锥斜角在一定的工艺误差内, 给锥套锥斜角增加一定的挤压移动的距离, 以达到被严密挤压于螺母内锥孔和连接管之 间的目的, 进一步确保获得理想的密封效果。 本发明还可在环槽中和接头外螺紋与接头外锥台之间设置密封圈, 通过此 处对密封圈压跨式挤压, 对连接管路的密封起到进一步提高密封性能的作用。 本发明也可在接头与螺母螺紋连接处, 接 头外锥台, 连接管喇叭口, 锥套, 螺母内锥孔之间的结合部, 施涂金属厌氧胶。 施涂金属厌氧胶, 不但可以起到修补密 封面的缺陷, 提供密封性能, 还可提供极高的抗拆卸力矩, 具有了更可靠的防连接松动能力, 施涂金属厌氧胶, 增加的 抗拆卸力矩是螺母与接头的螺紋连接的数倍以上, 正常情况下几乎不可能拆卸, 从而为应用在要求不可拆卸的连接管连 接场合成为可能。 本发明又可在接头与螺母, 螺母与连接管的连接结合部位套上热縮套管, 可以更好地将连接结合部位 与外界隔绝, 有利于保护本发明密封性能的长期稳定性, 本发明中的螺母, 接头, 锥套可采用不锈钢, 合金钢, 铜材 , 铝材等金属材料制作。 [0019] The present invention can be provided with an inner circular boss at the tail of the tapered inner hole of the nut, and a ring groove can be formed by the oblique angle of the connecting tube and the taper sleeve cone, which can ensure the bevel angle of the inner cone and the taper cone of the nut in a certain process. Within the error, the cone angle of the cone sleeve is increased by a certain distance of the extrusion movement, so as to be tightly pressed into the inner cone hole and the connecting tube of the nut. The purpose of each is to further ensure the desired sealing effect. The invention can also provide a sealing ring between the outer ring of the joint and the outer frustum of the joint in the ring groove, and the sealing of the connecting line can further improve the sealing performance by pressing the sealing ring over the sealing ring. The invention can also apply metal anaerobic adhesive at the joint between the joint and the nut, the outer frustum of the joint, the bell mouth of the joint pipe, the taper sleeve and the inner taper hole of the nut. Applying metal anaerobic adhesive not only can repair the sealing surface defects, provide sealing performance, but also provide extremely high anti-disassembly torque, with more reliable anti-connection loosening ability, metal anaerobic adhesive, increased The anti-disassembly torque is several times more than the threaded connection of the nut to the joint. It is almost impossible to disassemble under normal conditions, which makes it possible to apply the connection of the connecting pipe that requires non-removability. The invention can also be provided with a heat shrinkable sleeve at the joint portion of the joint and the nut, the nut and the connecting tube, which can better isolate the joint bonding portion from the outside, and is beneficial for protecting the long-term stability of the sealing performance of the present invention. The nuts, joints and taper sleeves can be made of stainless steel, alloy steel, copper or aluminum.
[0020]本发明为喇叭口密封, 连接管密封, 金属硬密封和连接管双密封的多重密封, 加上密封圈, 金属厌氧胶的辅助 密封, 这套组合密封提供远超过原有扩喇叭口连接单纯的喇叭口密封能力的同时, 均会加大螺母与接头连接的抗拆卸力 矩。 螺母光壁孔的长短, 实际运用时视连接密封需要, 可长可短。 螺母光壁孔与连接管的间隙通过金属厌氧胶密封, 封 堵与外界相通的同时, 金属厌氧胶会对螺母光壁孔提供一个强大的抗拆卸力矩, 所提供的抗拆卸力矩可通过调长螺母光 壁孔的长度而调大, 大到足以满足一些特殊密封连接的防拆卸要求为止,与此同时, 也能有效地起到减振减震的作用 , 建议实施时螺母光壁孔长度大于 10mm.  [0020] The present invention is a bell seal, a joint pipe seal, a metal hard seal and a double seal of a double seal of the joint pipe, plus a seal ring, an auxiliary seal of the metal anaerobic glue, the set seal provides far more than the original expanded horn At the same time, the port is connected to the simple bell mouth sealing ability, and the anti-disassembly torque of the nut and the joint is increased. The length of the light wall hole of the nut is required to be connected and sealed in actual use, and can be long or short. The gap between the light wall hole of the nut and the connecting pipe is sealed by the metal anaerobic glue, and the metal anaerobic adhesive provides a strong anti-disassembly torque to the light wall hole of the nut, and the anti-disassembly torque provided can be passed. The length of the light-walled hole of the lengthening nut is increased to be large enough to meet the anti-disassembly requirements of some special sealing connections. At the same time, it can effectively reduce the vibration and shock absorption. It is recommended to implement the nut wall hole. The length is greater than 10mm.
由于采用了上述技术方案, 本发明具有如下主要特点: Due to the adoption of the above technical solution, the present invention has the following main features:
1 ,本发明可在保持与扩喇叭口连接的连接工艺要求相同,连接成本较低, 连接方法便捷的情况下, 实现承压超过 25MPa以上的密封连接。  1. The invention can achieve the same connection process requirement for maintaining the connection with the flared port, the connection cost is low, and the connection method is convenient, and the sealing connection with the pressure exceeding 25 MPa or more is realized.
[0021] 2,本发明在连接管件螺紋螺旋承力范围内可以最大力矩的螺旋连接, 使得连接不必顾忌过拧紧的问题, 拧不紧 的问题也自然不存在, 连接安装变得简捷, 可靠,一次性连接成功率大为提高。  [0021] 2, the present invention can be connected to the screw thread of the connecting pipe thread with the maximum torque of the screw connection, so that the connection does not have to worry about the problem of tightening, the problem of not tightening naturally does not exist, the connection installation becomes simple and reliable, The success rate of one-time connection is greatly improved.
[0022] 3,本发明连接密封部分与外界彻底隔离, 可应用在连接管与接头为异种金属的连接上而无电化学腐蚀的问题 , 从而为低成本的连接管取代高成本的连接管成为可能。  [0022] 3. The connecting sealing portion of the present invention is completely isolated from the outside, and can be applied to the connection of the connecting pipe and the joint to the dissimilar metal without electrochemical corrosion, thereby replacing the high-cost connecting pipe with the low-cost connecting pipe. may.
[0023] 4,本发明为多重密封连接, 因而对连接管, 锥套, 扩喇叭口精度要求较低, 连接时更为简便, 连接成本下降。 多重密封和连接密封部分与外界隔离使得连接防振防松动性能大增, 连接可靠性大为提高。  [0023] 4. The invention has multiple sealing connections, so the precision of the connecting pipe, the taper sleeve and the flared mouth is lower, the connection is simpler, and the connection cost is reduced. The multiple sealing and connecting sealing parts are isolated from the outside, so that the connection anti-vibration and anti-loose performance is greatly increased, and the connection reliability is greatly improved.
[0024] 5,本发明与现有连接螺母有着完全的互换性, 可在不改变现有接头结构的前提下, 取代现有连接螺母。  [0024] 5. The present invention is completely interchangeable with the existing connecting nut, and can replace the existing connecting nut without changing the existing joint structure.
附图说明 DRAWINGS
[0025] 说明书附图 1是本发明的连接示意图。  BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a connection diagram of the present invention.
[0026]说明书附图 2是本发明的连接螺母结构示意图。  BRIEF DESCRIPTION OF THE DRAWINGS FIG. 2 is a schematic view showing the structure of a coupling nut of the present invention.
[0027]说明书附图 3是本发明的锥套结构示意图。  BRIEF DESCRIPTION OF THE DRAWINGS FIG. 3 is a schematic view of a tapered sleeve structure of the present invention.
[0028]说明书附图 4是本发明内锥孔上设有喇叭槽锥套结构示意图  [0028] FIG. 4 is a schematic view showing the structure of a horn grooved sleeve on the inner tapered hole of the present invention.
说明书附图 5是现有技术扩喇叭口连接示意图。 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 5 is a schematic diagram of a prior art flared port connection.
[0029]说明书附图 6是本发明内锥孔上设有喇叭槽锥套密封连接示意图。  [0029] FIG. 6 is a schematic view showing a sealing connection of a bevel groove on the inner tapered hole of the present invention.
具体实施方式 detailed description
[0030]下面结合附图和实施例对本发明作进一步说明:  [0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:
附中 1为接头, 2为螺纹连接, 3为连接螺母, 4为接头外锥台底径, 5为接头外锥台, 6为螺母内锥孔, 7为连接管喇叭 口, 8为喇叭口折弯口, 9为螺母锥套, 10为连接管, 1 1为螺母螺紋孔, 12为螺母内锥孔底径, 13为螺母内锥孔锥斜角 , 14为螺母内锥孔高, 15为螺母内锥孔端径, 16为螺母光壁孔, 17为锥套底径, 18为锥套内锥孔, 19为锥套高 , 20为锥套套孔壁, 21为锥套锥斜角, 22为锥套套孔高, 23为锥套套孔直径, 24为锥套内锥孔上的喇叭槽, 25为螺 母内锥孔, 26为螺母套孔间隙, 27为金属硬密封, 28为接头外锥台与喇叭口密封, 29为喇叭口与锥套内锥孔上的喇叭 槽密封, 30为螺母内锥孔与锥套锥斜角密封, 31为锥套锥斜角与连接管壁密封。 Attachment 1 is the joint, 2 is the threaded connection, 3 is the connection nut, 4 is the outer diameter of the outer frustum of the joint, 5 is the outer frustum of the joint, 6 is the inner cone of the nut, 7 is the bell mouth of the joint, 8 is the flare of the bell Bend, 9 is the nut taper sleeve, 10 is the connecting pipe, 1 1 is the nut threaded hole, 12 is the nut inner taper hole bottom diameter, 13 is the nut inner taper cone taper angle, 14 is the nut inner taper hole height, 15 is The inner diameter of the taper hole in the nut, 16 is the hole of the nut wall, 17 is the diameter of the taper sleeve, 18 is the taper hole inside the taper sleeve, 19 is the taper sleeve height, 20 is the taper sleeve hole wall, and 21 is the cone sleeve cone angle. 22 is the height of the taper sleeve, 23 is the diameter of the taper sleeve, 24 is the bell groove on the inner taper hole of the taper sleeve, 25 is the inner cone hole of the nut, 26 is the nut sleeve hole gap, 27 is the metal hard seal, 28 is the joint The frustum and the bell mouth are sealed, 29 is the bell mouth and the bell groove on the inner taper hole of the taper sleeve, 30 is the nut inner cone hole and the taper sleeve cone oblique angle seal, 31 is the taper sleeve cone angle and the connecting pipe wall seal.
[0031]实施例: 图 1为本发明的连接结构示意图。 图 1中 1为接头, 图 1中 3为本发明连接螺母, 本发明连接管件包括连 接螺母 3和螺母锥套 9,先将连接螺母 3,锥套 9依次套装在连接管 10上, 锥套锥斜角 21朝向螺母内锥孔 6,连接管管端扩喇 叭口 7, 轻拉连接管 10,将锥套 9通过喇叭口 7拉入螺母内锥孔 6内, 左右旋转连接螺母 3数次, 直到手感拉不动为止, 使 得连接管喇叭口 7与锥套内锥孔 18, 锥套套孔壁 20与连接管 10的管壁, 锥套 9的外锥斜面与螺母内锥孔 6相互间尽可能 地平滑贴合在一起, 然后将连接螺母 3上的螺母螺紋孔 1 1通过螺紋连接 2与接头 1上外螺紋螺旋连接, 直到手感拧不动为 止, 然后通过板手对螺母 3施加力矩, 直到螺母 3拧不动为止, 此时, 锥套锥斜角 21锥入螺母内锥孔 6与连接管 10之间 实现连接管密封, 被挤压固定在接头外锥台 5和锥套内锥孔 18之间的喇叭口 7实现喇叭口密封, 连接完成。 当采用内锥 孔上设有喇叭槽的锥套实施本发明时, 喇叭口 7的扩口长度应以锥套内锥孔 18上的喇叭槽 24的长度为准, 以便喇叭口 7被完全置于喇叭槽 24内, 其余连接方法与上述实施方法相同, 附图 4为锥套内锥孔设有喇叭槽的锥套, 24即为锥套内 锥孔上的喇叭槽, 附图 6为本发明内锥孔上设有喇叭槽锥套密封连接示意图, 其中 27为金属硬密封, 28为接头外锥台与 喇叭口密封, 29为喇叭口与喇叭槽密封, 28与 29构成了喇叭槽密封, 30为螺母内锥孔与锥套锥斜角密封, 31为锥套锥 斜角与连接管壁密封, 30与 31构成了连接管密封, 27,30,31构成连接管双密封。 将本发明应用在接头 1材料与连接管 10材料为异质材料的连接时, 螺母 3则应以不锈钢材料为佳, 不锈钢为非活性材料, 与异种金属连接间的电化学反应极 弱, 几乎可以忽略不计。 连接完成后将接头 1 , 螺母 3, 连接管 10连接结合部套上热缩套管加以对外界的进一步的隔绝 保护, 对连接长期稳定的密封有效性效果显著。 附图 5中 25为现有扩喇叭口连接技术中的螺母内锥孔, 用以与现有技术 中的接头外锥台 5挤压连接管 10的喇叭口 7实施密封连接, 附图 5中 26为现有技术扩喇叭口连接后管子本身与螺母套孔 之间的螺母套孔间隙, 与外界是相通的。 锥套套孔直径 23仅需略大于连接管 10外径, 只要能够满足套进连接管即可 , 建设两者相差值在 0. 1mm内为佳。 [0031] Embodiments FIG. 1 is a schematic view of a connection structure of the present invention. 1 is a joint, and FIG. 1 is a connecting nut of the present invention. The connecting pipe member of the present invention comprises a connecting nut 3 and a nut taper sleeve 9, and the connecting nut 3 and the taper sleeve 9 are firstly set on the connecting pipe 10, and the taper sleeve is The taper angle 21 faces the inner cone hole 6 of the nut, connects the tube end to expand the bell mouth 7, pulls the connecting tube 10 lightly, pulls the taper sleeve 9 through the bell mouth 7 into the inner cone hole 6 of the nut, and rotates the connecting nut 3 left and right several times Until the handle is pulled, the connecting tube bell mouth 7 and the taper inner taper hole 18, the taper sleeve hole wall 20 and the tube wall of the connecting tube 10, the outer cone inclined surface of the taper sleeve 9 and the nut inner taper hole 6 are mutually Smoothly fit together as much as possible, and then screw the nut threaded hole 1 1 of the coupling nut 3 to the external thread of the joint 1 through the threaded connection 2 until the hand feels tight, and then apply a torque to the nut 3 through the wrench. Until the nut 3 is not actuated, at this time, the taper taper angle 21 is tapered into the inner taper hole 6 of the nut and the connecting pipe 10 to realize the connection pipe sealing, and is pressed and fixed in the outer frustum 5 and the taper sleeve of the joint. The bell mouth 7 between the tapered holes 18 achieves a bell seal and the connection is completed. When the present invention is implemented by using a taper sleeve having a horn groove on the inner taper hole, the flare length of the bell mouth 7 should be based on the length of the horn groove 24 on the taper hole 18 in the taper sleeve, so that the bell mouth 7 is completely set. In the speaker slot 24, the remaining connection method is the same as the above-mentioned implementation method. FIG. 4 is a taper sleeve with a bell groove in the taper sleeve, and 24 is a speaker slot on the inner taper hole of the taper sleeve. FIG. In the invention, the inside of the cone hole is provided with a sealing structure of the speaker groove sleeve, wherein 27 is a metal hard seal, 28 is a joint outer frustum and a bell mouth seal, 29 is a bell mouth and a bell groove seal, and 28 and 29 constitute a bell groove seal. 30 is the nut inner cone hole and the cone sleeve cone angle sealing, 31 is the cone sleeve cone The bevel is sealed to the connecting pipe wall, 30 and 31 constitute a connecting pipe seal, and 27, 30, 31 constitute a double seal of the connecting pipe. When the invention is applied to the connection of the material of the joint 1 and the material of the connecting pipe 10 to a heterogeneous material, the nut 3 should preferably be made of stainless steel, the stainless steel is an inactive material, and the electrochemical reaction between the connection with the dissimilar metal is extremely weak, almost Can be ignored. After the connection is completed, the joint 1, the nut 3, the connecting pipe 10 are connected to the joint portion and the heat shrinkable sleeve is placed on the heat-shrinkable sleeve to further protect the outside from the outside, and the sealing effect for the long-term stability of the connection is remarkable. In FIG. 5, 25 is a nut inner taper hole in the prior art flare connection technology, and is used for sealing connection with the bell mouth 7 of the joint outer frustum 5 extrusion connecting pipe 10 in the prior art, FIG. 26 is the gap between the nut sleeve hole between the pipe itself and the nut sleeve hole after the flare connection of the prior art is connected, and is in communication with the outside. 1毫米内内。 Preferably, the difference between the two is preferably within 0.1 mm.
[0032] [0032]

Claims

权利要求书 Claim
1. 一种管路连接管件, 包括螺母, 接头, 接头上的外锥台和连接管喇叭口, 其特征是: 螺母 为一具有内锥孔的螺母, 螺母内锥孔内设置有配套使用的锥套, 锥套为中空的锥套套孔, 锥 套套孔底部设有锥套内锥孔, 锥套套孔壁与锥套外锥斜面组成锥套锥斜角, 接头外锥台挤压 连接管喇叭口, 由连接管喇叭口挤压锥套内锥孔并将锥套锥斜角挤压在螺母内锥孔与连接管 之间实现锥套套孔与连接管的连接管密封, 连接管喇叭口被挤压于接头外锥台与锥套内锥孔 之间实现喇叭口密封, 锥套锥斜角挤压移动方向与螺母旋进方向呈反方向。  1. A pipe connecting pipe fitting, comprising a nut, a joint, an outer frustum and a connecting pipe bell mouth, wherein the nut is a nut having an inner taper hole, and the inner taper hole of the nut is provided with an auxiliary The taper sleeve is a hollow taper sleeve hole, and the taper sleeve hole bottom is provided with a taper sleeve inner taper hole, the taper sleeve sleeve wall and the taper sleeve outer cone slope surface form a cone sleeve cone angle, and the joint outer frustum extrusion connection tube speaker In the mouth, the inner cone hole of the taper sleeve is pressed by the bell mouth of the connecting pipe, and the taper angle of the taper sleeve is squeezed between the taper hole of the nut and the connecting pipe to realize the sealing pipe joint of the taper sleeve hole and the connecting pipe, and the bell mouth of the connecting pipe is sealed The bell mouth is sealed between the outer frustum of the joint and the inner taper hole of the taper sleeve, and the direction of the taper angle of the taper sleeve is opposite to the direction in which the nut is screwed.
2. 一种管路连接管件, 包括螺母, 接头,接头上的外锥台和连接管喇叭口, 其特征是: 螺母 为一具有内锥孔的螺母, 螺母内锥孔内设置有配套使用的锥套, 锥套为中空的锥套套孔, 锥 套套孔底部设有锥套内锥孔, 锥套内锥孔上设有喇叭槽, 锥套套孔壁与锥套外锥斜面组成锥 套锥斜角, 接头外锥台挤压连接管喇叭口和挤压锥套内锥孔并将锥套锥斜角挤压在螺母内锥 孔与连接管之间实现锥套套孔与连接管的连接管密封和接头外锥台与锥套内锥孔之间的金属 硬密封, 连接管喇叭口被挤压于接头外锥台与锥套内锥孔上的喇叭槽之间实现喇叭槽密封, 锥套锥斜角挤压移动方向与螺母旋进方向呈反方向。  2. A pipe connecting pipe fitting, comprising a nut, a joint, an outer frustum and a connecting pipe bell mouth, wherein the nut is a nut having an inner taper hole, and the inner taper hole of the nut is provided with an auxiliary The taper sleeve is a hollow taper sleeve hole, and the taper sleeve hole bottom is provided with a taper sleeve inner taper hole, the taper sleeve inner cone hole is provided with a speaker slot, the taper sleeve hole wall and the taper sleeve outer cone slope face form a cone sleeve cone oblique Angle, the outer frustum of the joint squeezes the bell mouth of the connecting pipe and the inner taper hole of the pressing taper sleeve, and squeezes the taper angle of the taper sleeve between the taper hole of the nut and the connecting pipe to realize the sealing pipe seal of the taper sleeve hole and the connecting pipe And the metal hard seal between the outer frustum of the joint and the inner taper hole of the taper sleeve, the bell mouth of the connecting pipe is squeezed between the outer frustum of the joint and the speaker groove on the inner taper hole of the taper sleeve to realize the bell groove seal, the cone sleeve cone The direction of the oblique extrusion is opposite to the direction in which the nut is screwed.
3. 根据权利要求 1或权利要求 2所述的一种管路连接管件,其特征是:锥套内锥孔锥斜角等 于接头外锥台锥斜角或锥套内锥孔锥斜角小于接头外锥台锥斜角 0到 15度。  3. The pipe connection pipe fitting according to claim 1 or claim 2, wherein the taper angle of the taper hole taper is equal to the taper angle of the outer frustum cone of the joint or the taper angle of the taper cone of the taper sleeve is smaller than The taper taper angle of the joint is 0 to 15 degrees.
4. 根据权利要求 1或权利要求 2所述的一种管路连接管件, 其特征是: 接头外锥台底径小 于等于锥套底径, 锥套底径小于等于螺母内锥孔底径, 锥套高小于等于螺母内锥孔高, 锥套 锥斜角小于等于螺母内锥孔锥斜角。  4. The pipe connecting pipe fitting according to claim 1 or claim 2, wherein: the bottom diameter of the outer frustum of the joint is less than or equal to the bottom diameter of the taper sleeve, and the bottom diameter of the taper sleeve is less than or equal to the bottom diameter of the inner taper hole of the nut. The height of the cone sleeve is less than or equal to the height of the cone inside the nut, and the angle of the cone sleeve is less than or equal to the angle of the cone cone inside the nut.
5. 根据权利要求 1或权利要求 2所述的一种管路连接管件,其特征是:嫘母内锥孔锥斜角小 于 12度。  5. A pipe connection pipe according to claim 1 or claim 2, wherein the taper angle of the inner taper cone is less than 12 degrees.
6. 根据权利要求 1或权利要求 2所述的一种管路连接管件, 其特征是:锥套孔高度和螺母内 锥孔高度均大于 3議,锥套套孔高大于 2画。 替换页 (细则第 26条)  6. A pipe connecting pipe according to claim 1 or claim 2, wherein the height of the taper hole and the height of the taper hole in the nut are both greater than 3, and the height of the taper sleeve is greater than 2 draws. Replacement page (Article 26)
PCT/CN2014/072064 2013-05-05 2014-02-13 Connecting pipe fitting for pipeline WO2014180179A1 (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016065651A1 (en) * 2014-11-01 2016-05-06 孙海潮 Pipe fitting for pipeline connection
WO2016065648A1 (en) * 2014-11-01 2016-05-06 孙海潮 Pipe fitting for pipeline connection
WO2016065649A1 (en) * 2014-11-01 2016-05-06 孙海潮 Pipe fitting for pipeline connection
KR101879248B1 (en) * 2018-04-23 2018-07-17 오형동 Connecting structure of refrigerant pipe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19520099A1 (en) * 1995-06-01 1997-01-02 Parker Hannifin Gmbh Pressure-tight positive locking pipeline joint
CN2469296Y (en) * 2001-03-30 2002-01-02 张俊生 Aluminium plastic pipe connecting joint
CN1421636A (en) * 2001-11-29 2003-06-04 张天林 Great-flow rate composite pipe coupling union
CN103604012A (en) * 2013-04-13 2014-02-26 孙海潮 Connecting nut dedicated to split-type air conditioner refrigerant connecting pipeline

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1920512A (en) * 1931-12-19 1933-08-01 John Waugh Pipe coupling
US5076616A (en) * 1990-05-08 1991-12-31 Nwd International, Inc. Hydraulic fitting with O-ring seal end stop
JP4289706B2 (en) * 1998-11-06 2009-07-01 東邦化成株式会社 Resin pipe fittings
CN2760361Y (en) * 2004-12-29 2006-02-22 中大冷冻材料股份有限公司 Dual-purpose pipe joint
CN2881273Y (en) * 2006-02-27 2007-03-21 周安虎 Connecting pipe fitting of thin wall metal pipe
CN200972021Y (en) * 2006-06-22 2007-11-07 讯凯国际股份有限公司 Liquid colling device and its guide pipe and assembly of the pipe joint

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19520099A1 (en) * 1995-06-01 1997-01-02 Parker Hannifin Gmbh Pressure-tight positive locking pipeline joint
CN2469296Y (en) * 2001-03-30 2002-01-02 张俊生 Aluminium plastic pipe connecting joint
CN1421636A (en) * 2001-11-29 2003-06-04 张天林 Great-flow rate composite pipe coupling union
CN103604012A (en) * 2013-04-13 2014-02-26 孙海潮 Connecting nut dedicated to split-type air conditioner refrigerant connecting pipeline

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