密封

This paper analyzed and summed up the flexible seal structure, seal working mechanism and application field, analyzed the key part with finite element analysis in snubbing service , as follows:Introduced on the composition and working principle of the on-off flexible seal system in snubbing service.

本文主要对井口防喷密封装置的柔性密封结构、密封工作机理及其控制方法进行分析和研究，对带压作业防喷装置重要零部件进行了静力学有限元分析，主要包括以下几个方面：阐述带压作业系统组成与工作原理。

Knife-type valve: Features 1, ultra-structure length, saving materials, piping systems can greatly reduce the overall weight of 2, the effective space occupied by small, can effectively support the strength of pipelines can reduce the possibility of pipeline vibration 3, flashboard selected austenitic stainless steel, Corrosion performance greatly improved, which can effectively prevent the corrosion caused by gate leakage sealing diarrhea 4, on the use of flexible packing seal PTFE, sealing reliable, flexible and lightweight 5, the gate with Knife function, can effectively break the gates of all types of media objects

刀型闸阀：产品特点 1、超短结构长度，节省材料，可使管路系统整体重量大大减轻 2、占用有效空间小，能有效支持管道的强度，可减少管道振动的可能性 3、闸板选用奥氏体不锈钢，耐腐性能大大提高，可有效的防止由于闸板腐蚀引起的密封泻漏 4、上密封填料采用柔性 PTFE ，密封可靠、操作轻便灵活 5、闸板具有闸刀的功能，能有效的闸断介质中各类杂物

Design accord with API 6A Norm; Body of valve with valve lids, Flashboard with valve set according to needs adopt metal with metal seal up or nonmetal seal up, Valve rod and valve lid between with fall seal up convenient for valve bring press replacing valve stem packing, Dense cover built-up welding hard alloy,Endures cauterization, Endures impact.

设计符合 API 6A 规范；阀体与阀盖、闸板与阀座根据需要采用金属与金属密封或非金属密封，阀杆和阀盖间设有倒密封便于阀的带压更换阀杆填料，密封面堆焊硬质合金，耐腐蚀、耐冲击。

Effect because of axial force, hermetic sealing compacting soft and floury sucking oblique tones in increases by strenuously , hermetic sealing wears the effect aggravating , sealing up completely until hermetic sealing damages , loses face to face away face to face.

效应，因为轴向力，软密封压缩和粉状吸吮仄声在增加发奋，密封磨损加剧的影响，封存，直至完全密封的损失，失去了面对面面对面face。

Toilet of the gasket should be made of rubber or plastic foam, so that the flexibility of the gasket, and seal performance.

而坐便器的密封垫应该是橡胶或是发泡塑料制成的，这样的密封垫弹性强，密封性能好。5。

Heavy machinerylarge water hydraulic press forge piece、upright grind、cement bric building materials equipment line,bus(heavy truck、light truck、large bus、medium-sizedbus and chassis、farm-oriented tractor special vehicle ,automobile components,the environmental protection equipments (air purification, smoke dust purification, desulfurization equipments) and other industries( prison, hydroelectric equipments, electric machine, lamps and lanterns, welding automatic system manufacture, casting technique, forging and pressing equipment, military enterprise,etc).

涉及到工程机械（挖掘机、压路机、起重机、路面机械、铲运机、推土机、叉车等企业）、基础件（橡塑密封、机械密封、石墨密封、液压附件、气动元件等企业）、重型机械（大型水压机锻件、立磨、墙地砖建材装备线）、汽车（重型、轻型货车、大客车、中型客车及底盘、农用车、专用车、汽车配件企业）、环保设备（空气净化、烟尘净化、脱硫设备企业）及其他（监狱、水电设备、电机、灯具、焊接自动化系统制造、铸造、锻压、军工等）行业。

For protecting the signal transmitting fiber in downhole high temperature and pressure environment, an epoxy-free package method based on hermetical bonding of quartz ferrule and fiber is used and Polyimide coated fiber and stainless steel protecting tubing are adopted.

我们采用金属—石英管的机械压力密封和石英管—光纤的激光热熔无胶密封结构，保证了传感器导压腔和耐高温光纤不锈钢保护套管的可靠密封，提高了整个系统的可靠性和使用寿命；采用不锈钢套管保护聚酰亚胺材料涂敷的耐高温光纤传输传感信号，解决了耐高温和保护光纤的问题。

Themain characteristic is: due to use three eccentric configuration, hermetic capability reliably , which ensure disc never touch sealingseat when it start, solve the problem of hermetical seat burden unequally, prolong service life, and ensure reliable hermetic capability with advantage of high temperature resistant , wearable, antisepsis etc.

其特点为：由于采用的是三偏心结构，密闭性能可靠，确保开启时蝶板不接触密封座，消除了密封座不均匀负载，延长了使用寿命，确保可靠的密封性能，具有耐高温，耐磨损，耐腐蚀等优点。

Our company is a joint venture enterprise established by Qingdao Huanli Sealing Co., Ltd the subordinated company of Qingdao University of Science and Technology Postgraduate academy , and CANADA NEED Inc. specializing in the use of macromolecule new material, hydrokinetics theory test, the basic achievement in scientific research. It is an enterprise stressing on the technology, mainly dealing with the research and manufacturing of rubber sealing products, automobile rubber shock absorber and valve products and other rubber pressing products.

公司简介：青岛海力威密封有限公司系由青岛科技大学研究生院所属青岛环力密封有限公司与加拿大NEED公司合资成立，专业从事高分子新材料的应用、流体动力学理论验证和科研成果孵化，主要以研发生产汽车橡胶密封件、汽车橡胶减振制品及其它橡胶模压制品为重点的技术密集型企业。

The initial labyrinth seal located at shaft and interstage was redesigned into brush seals.The comparison for the performance of both kinds of seal was made.

结果表明：在设计参数范围内，刷式密封具有比迷宫密封更优越的密封性能。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。