CN201059400Y - a sealing flange - Google Patents

a sealing flange Download PDF

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Publication number
CN201059400Y
CN201059400Y CNU2007200320486U CN200720032048U CN201059400Y CN 201059400 Y CN201059400 Y CN 201059400Y CN U2007200320486 U CNU2007200320486 U CN U2007200320486U CN 200720032048 U CN200720032048 U CN 200720032048U CN 201059400 Y CN201059400 Y CN 201059400Y
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China
Prior art keywords
flange
flanges
joint
sealing ring
sealing
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Expired - Fee Related
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CNU2007200320486U
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Chinese (zh)
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任工昌
刘建平
吕桂志
齐鹏
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Shaanxi University of Science and Technology
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Shaanxi University of Science and Technology
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Abstract

一种密封法兰,包括相互配合的左、右法兰盘,以及设置在左、右法兰盘间的密封圈,所说的左、右法兰盘相结合处的下端开设有一安装密封圈的空腔,且右法兰盘由弹性材料制成,且该法兰盘与左法兰盘的结合面之间有一角度为β的倾斜角。本实用新型的右法兰盘在力的作用下产生弹性变形并被压平,由于两法兰盘接触处的材料产生了变形,使得法兰盘更好的达到了密封效果;法兰盘产生变形的同时,两法兰盘内部接头处的缝隙减至最小,流体介质流经接头处时不会形成涡流;且流体介质不直接作用于密封圈上,降低了法兰接头处及密封圈的磨损,延长其使用寿命。

Figure 200720032048

A sealing flange, including left and right flanges that cooperate with each other, and a sealing ring arranged between the left and right flanges, the lower end of the joint of the left and right flanges is provided with an installation sealing ring The cavity, and the right flange is made of elastic material, and there is an inclination angle of β between the joint surface of the flange and the left flange. The right flange of the utility model is elastically deformed and flattened under the action of force, and the material at the contact of the two flanges is deformed, so that the flange achieves a better sealing effect; the flange produces At the same time of deformation, the gap at the internal joint of the two flanges is minimized, and no eddy current is formed when the fluid medium flows through the joint; and the fluid medium does not directly act on the sealing ring, which reduces the pressure on the flange joint and the sealing ring. wear and prolong its service life.

Figure 200720032048

Description

一种密封法兰 a sealing flange

技术领域technical field

本实用新型涉及一种机械连接部件法兰,具体涉及一种密封法兰。The utility model relates to a flange of a mechanical connection part, in particular to a sealing flange.

背景技术Background technique

法兰是通用机械中广泛应用的连接用零部件之一,在机械、冶金、轻工、石油、化工、电力、交通、纺织、制药、核能、船舶、建工、锅炉管道、排水和采暖通风等工程装置中使用极为普遍。其主要用于管子与管件、阀门、设备等之间的连接。目前常使用的法兰是在两个相对的法兰盘的对接平面之间加密封垫,然后拧紧螺栓将两个法兰盘紧压密封在一起。由于密封垫受压后的变形较大,安装时很难保证密封垫圆周的受力均匀且厚度相同,密封垫的厚度不均就会造成两个法兰盘的连接处产生间隙,管道内的流体介质流经该间隙处会形成涡流,进而加速法兰盘连接处及密封垫的磨损,造成法兰连接处的泄露。并且对于大型螺栓法兰联接系统(例如气体涡轮发动机上汽缸用的螺栓法兰联接),在高压工作条件下,出于对各个气缸间用法兰连接的接合处高度密封性能的需要,目前采用常规的联接方法,螺栓数量达100多个,不仅影响了密封效果,还给维修带来极大的不便。另外在使用中由于管道内输送的流体特性,法兰对接处因为温度、压力、撞击、振动等因素,常常出现滴漏现象,造成输送流体的泄漏,而影响正常生产。特别是化工厂管道内常输送酸、碱、有毒、有害、易然、易爆气体一但泄漏,后果严重,维修麻烦,威胁操作人员生命安全,甚至造成事故发生。Flanges are one of the widely used connecting parts in general machinery. It is widely used in engineering installations. It is mainly used for the connection between pipes and pipe fittings, valves, equipment, etc. The commonly used flange is to add a gasket between the butt joint planes of two opposite flanges, and then tighten the bolts to tightly press and seal the two flanges together. Due to the large deformation of the gasket under pressure, it is difficult to ensure that the gasket is evenly stressed and has the same thickness during installation. The uneven thickness of the gasket will cause a gap at the joint of the two flanges, and the pipe inside When the fluid medium flows through the gap, eddy currents will be formed, which will accelerate the wear of the flange joints and gaskets, resulting in leakage at the flange joints. And for the large-scale bolted flange connection system (such as the bolted flange connection used for the upper cylinder of the gas turbine engine), under high-pressure working conditions, due to the need for high sealing performance of the flanged joints between the cylinders, conventional The original connection method, the number of bolts is more than 100, which not only affects the sealing effect, but also brings great inconvenience to maintenance. In addition, due to the characteristics of the fluid transported in the pipeline, dripping often occurs at the flange joint due to factors such as temperature, pressure, impact, vibration, etc., resulting in the leakage of the transported fluid and affecting normal production. Especially in the pipelines of chemical plants, acid, alkali, poisonous, harmful, flammable, and explosive gases are often transported. Once they leak, the consequences will be serious, maintenance will be troublesome, the life safety of operators will be threatened, and even accidents will occur.

发明内容Contents of the invention

本实用新型的目的在于克服上述现有技术的缺点,提供了一种使用寿命长、密封效果好且便于维修的密封法兰。The purpose of the utility model is to overcome the above-mentioned shortcomings of the prior art and provide a sealing flange with long service life, good sealing effect and easy maintenance.

为达到上述目的,本实用新型采用的技术方案是:包括相互配合的左、右法兰盘,以及设置在左、右法兰盘间的密封圈,所说的左、右法兰盘相结合处的下端开设有一安装密封圈的空腔,右法兰盘由弹性材料制成,且该法兰盘与另一法兰盘的结合面之间有一角度为β的倾斜角。In order to achieve the above purpose, the technical solution adopted by the utility model is: including left and right flanges that cooperate with each other, and a sealing ring arranged between the left and right flanges, the said left and right flanges are combined There is a cavity for installing a sealing ring at the lower end of the center. The right flange is made of elastic material, and there is an inclination angle of β between the joint surface of the flange and the other flange.

本实用新型的密封圈为O型结构的弹性材料制成,其内部有金属骨架。The sealing ring of the utility model is made of elastic material with an O-shaped structure, and has a metal skeleton inside.

本实用新型的右法兰盘在力的作用下产生弹性变形并被压平,由于两法兰盘接触处的材料产生了变形,使得法兰盘更好的达到了密封效果;法兰盘产生变形的同时,两法兰盘内部接头处的缝隙减至最小,流体介质流经接头处时不会形成涡流;且流体介质不直接作用于密封圈上,降低了法兰接头处及密封圈的磨损,延长其使用寿命。The right flange of the utility model is elastically deformed and flattened under the action of force, and the material at the contact point of the two flanges is deformed, so that the flange achieves a better sealing effect; the flange produces At the same time of deformation, the gap at the joint inside the two flanges is minimized, and no eddy current is formed when the fluid medium flows through the joint; and the fluid medium does not directly act on the sealing ring, which reduces the pressure on the flange joint and the sealing ring. wear and prolong its service life.

附图说明Description of drawings

图1是本实用新型的整体结构示意图。Fig. 1 is a schematic diagram of the overall structure of the utility model.

具体实施方式Detailed ways

下面结合附图对本实用新型的结构原理和工作原理作进一步详细说明。Below in conjunction with accompanying drawing, structural principle and working principle of the present utility model are described in further detail.

参见图1,本实用新型包括相互配合的左、右法兰盘1、2,左、右法兰盘1、2相结合处的下端开设有一安装密封圈3的空腔,该密封圈3为O型结构的弹性材料制成,其内部有金属骨架,且右法兰盘2由弹性材料制成,右法兰盘2与左法兰盘1的结合面之间有一角度为β的倾斜角。Referring to Fig. 1, the utility model includes the left and right flanges 1, 2 that cooperate with each other, and the lower end of the joint of the left and right flanges 1, 2 is provided with a cavity for installing a sealing ring 3, and the sealing ring 3 is The O-shaped structure is made of elastic material with a metal skeleton inside, and the right flange 2 is made of elastic material, and there is an inclination angle of β between the joint surface of the right flange 2 and the left flange 1 .

本实用新型在力作用下,右法兰盘2产生弹性变形并被压平,而左法兰盘1为刚体,由于两法兰盘接触处的材料产生了变形,使得法兰盘更好的达到了密封效果;右法兰盘2产生变形的同时,两法兰盘内部接头处的缝隙减至最小,流体介质流经接头处时不会形成涡流;流体介质不直接作用于密封圈3上,降低了法兰接头处及密封圈的磨损,延长其使用寿命;流体介质通过细缝进入空腔后压强已减弱,O形密封圈3会在其固有应力的作用下起到密封作用。即使微量流体介质会通过密封圈3,但由于法兰面的材料变形使得两法兰结合紧密,可以进一步起到密封作用。形成了多级密封结构,大幅度增强了法兰盘的密封效果;对于大型的螺栓法兰联接系统,还可以减少螺栓使用数目,减轻了法兰盘重量,方便了维修。Under the force action of the utility model, the right flange 2 produces elastic deformation and is flattened, while the left flange 1 is a rigid body, and the material at the contact point of the two flanges is deformed, so that the flange is better The sealing effect is achieved; while the right flange 2 is deformed, the gap at the joint inside the two flanges is minimized, and no eddy current is formed when the fluid medium flows through the joint; the fluid medium does not directly act on the sealing ring 3 , reduce the wear of flange joints and sealing rings, and prolong their service life; the pressure of the fluid medium has weakened after entering the cavity through the slits, and the O-shaped sealing ring 3 will play a sealing role under the action of its inherent stress. Even if a small amount of fluid medium can pass through the sealing ring 3, the deformation of the material on the flange surface makes the two flanges tightly combined, which can further play a sealing role. A multi-stage sealing structure is formed, which greatly enhances the sealing effect of the flange; for large-scale bolted flange connection systems, it can also reduce the number of bolts used, reduce the weight of the flange, and facilitate maintenance.

Claims (2)

1. sealing flange, comprise the left and right flanges dish (1,2) that cooperatively interacts, and be arranged on seal ring (3) between left and right flanges dish (1,2), it is characterized in that: the lower end at said left and right flanges dish (1, the 2) place of combining offers the cavity of an installation seal ring (3), right flange plate (2) is made by elastic material, and an angle is arranged between the junction plane of this flange plate and another flange plate is the tilt angle of β.
2. sealing flange according to claim 1 is characterized in that: the elastic material of the O type structure that said seal ring (3) is is made, and there is metal frame its inside.
CNU2007200320486U 2007-06-15 2007-06-15 a sealing flange Expired - Fee Related CN201059400Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200320486U CN201059400Y (en) 2007-06-15 2007-06-15 a sealing flange

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Application Number Priority Date Filing Date Title
CNU2007200320486U CN201059400Y (en) 2007-06-15 2007-06-15 a sealing flange

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CN201059400Y true CN201059400Y (en) 2008-05-14

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CNU2007200320486U Expired - Fee Related CN201059400Y (en) 2007-06-15 2007-06-15 a sealing flange

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103453252A (en) * 2013-09-17 2013-12-18 江阴中南重工股份有限公司 Flange for pipeline connection
CN105065120A (en) * 2015-07-09 2015-11-18 中国航空工业集团公司沈阳发动机设计研究所 Improved heavy duty gas turbine air cylinder
CN105465517A (en) * 2015-12-30 2016-04-06 中国核电工程有限公司 Inflation sealing device
CN115289111A (en) * 2022-07-07 2022-11-04 深圳市科彩精密技术有限公司 Flange for photovoltaic cell production equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103453252A (en) * 2013-09-17 2013-12-18 江阴中南重工股份有限公司 Flange for pipeline connection
CN105065120A (en) * 2015-07-09 2015-11-18 中国航空工业集团公司沈阳发动机设计研究所 Improved heavy duty gas turbine air cylinder
CN105465517A (en) * 2015-12-30 2016-04-06 中国核电工程有限公司 Inflation sealing device
CN115289111A (en) * 2022-07-07 2022-11-04 深圳市科彩精密技术有限公司 Flange for photovoltaic cell production equipment
CN115289111B (en) * 2022-07-07 2023-08-11 深圳市科彩精密技术有限公司 Flange for photovoltaic cell production equipment

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee