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密封腔體壓力超過 3MPa 時(shí)所采用的機(jī)械密封屬高壓機(jī)械密封，其結(jié)構(gòu)、零件選材以及可靠性要求等都有別于普通型機(jī)械密封。高壓機(jī)械密封結(jié)構(gòu)形式包括兩部分：密封結(jié)構(gòu)形式和零件結(jié)構(gòu)形式。重點(diǎn)應(yīng)考慮壓力的平衡問題，以避免力不平衡造成密封移位或變形，從而導(dǎo)致密封失效。

其中一種典型的單端面高壓泵用機(jī)械密封，屬于多彈簧平衡型、螺釘加鍵傳動(dòng)。工作溫度-20~120℃，工作壓力3~10MPa。靜環(huán)端面上開數(shù)個(gè)均布的流體動(dòng)壓槽以適應(yīng)更高的工作負(fù)荷，流體動(dòng)壓槽深度為1mm 左右，槽形多種多樣，根據(jù)工況，主要是使用pv值來設(shè)計(jì)，通過試驗(yàn)來確立。

這種密封的特點(diǎn)是結(jié)構(gòu)簡單，零件采用增加了厚壁的結(jié)構(gòu)，動(dòng)環(huán)、靜環(huán)常采用硬對硬材料組合方式，設(shè)置介質(zhì)沖洗和靜環(huán)背部急冷裝置。該種密封形式應(yīng)用范圍很廣。

對于雙密封和多端面密封，應(yīng)設(shè)置緩沖阻塞液循環(huán)系統(tǒng)。對于有毒、易燃、易爆的介質(zhì)，不宜采用單端面密封，應(yīng)采用平衡型雙端面機(jī)械密封。當(dāng)密封壓力很高時(shí)，如超過6MPa，可采用串聯(lián)式密封、三端面密封，即雙端面加串聯(lián)式結(jié)構(gòu)。

密封百科知識內(nèi)容選自《實(shí)用機(jī)械密封技術(shù)問答》

上海克蘭定制集裝式機(jī)械密封 

上?？颂m根據(jù)砂磨機(jī)復(fù)雜工況定制集裝式雙端面機(jī)械密封，4大技術(shù)亮點(diǎn)

成就“穩(wěn)定 耐磨 耐久”品質(zhì)：

1、撓性設(shè)計(jì)，降低設(shè)備自身安裝精度要求；

2、動(dòng)環(huán)為浮動(dòng)環(huán)結(jié)構(gòu)，更匹配國內(nèi)設(shè)備；

3、抗反壓設(shè)計(jì)，物料不易進(jìn)入封液罐，密封穩(wěn)定，耐久；

4、擋珠子設(shè)計(jì)（用在0.1mm微珠）。

目前在用軸徑：19mm-225mm，轉(zhuǎn)速：6000rpm

上?？颂m為上海市專精特新中小企業(yè)、高新技術(shù)企業(yè)，24年機(jī)械密封老品牌！始終致力于提供機(jī)械密封整體解決方案和全生命周期服務(wù)，并擁有大量成功案例和豐富經(jīng)驗(yàn)。為客戶提供聯(lián)合研發(fā)、測繪、選型、生產(chǎn)、試驗(yàn)、技術(shù)支持等一站式服務(wù)。

集裝式機(jī)械密封：泵用機(jī)械密封、攪拌釜用機(jī)械密封、砂磨機(jī)機(jī)械密封、干氣密封。

上?？颂m優(yōu)勢服務(wù)：進(jìn)口替代、上門測繪、特殊定制機(jī)封設(shè)計(jì)。

干氣密封

l 干氣密封

非接觸式氣體潤滑密封，端面無磨損；“氣封液”密封更安全；全壽命成本低；密封控制系統(tǒng)結(jié)構(gòu)簡單，可靠性高；環(huán)保無污染。

泵用機(jī)械密封

攪拌釜用集裝式雙端面機(jī)械密封

l釜用攪拌器機(jī)械密封

上?？颂m生產(chǎn)的種類包括：1、單端面干運(yùn)轉(zhuǎn)外裝式釜用機(jī)械密封；2、搪瓷攪拌器專用機(jī)械密封；3、鋼制反應(yīng)釜機(jī)械密封；4、高壓反應(yīng)釜機(jī)械密封。

泵用集裝式機(jī)械密封

上海克蘭密封件有限公司（簡稱“上?？颂m”）創(chuàng)立于2001年，自建廠區(qū)辦公樓，建筑面積12000㎡。地處上海虹橋商務(wù)區(qū)，緊鄰虹橋綜合交通樞紐，距離虹橋樞紐僅10分鐘車程，更是1小時(shí)覆蓋長三角、2-5小時(shí)覆蓋全國和日韓等東南亞主要城市，具有得天獨(dú)厚的區(qū)位優(yōu)勢。 

上?？颂m為上海市專精特新中小企業(yè)、高新技術(shù)企業(yè)，專注于機(jī)械密封領(lǐng)域研發(fā)和生產(chǎn)。產(chǎn)品有泵用機(jī)械密封、釜用攪拌器機(jī)械密封、砂磨機(jī)機(jī)械密封、干氣密封、密封輔助系統(tǒng)、軸承保護(hù)器、非標(biāo)定制機(jī)械密封。提供從研發(fā)、設(shè)計(jì)、測繪、選型、生產(chǎn)、試驗(yàn)、技術(shù)支持等全生命周期機(jī)械密封整體解決方案和增值服務(wù)。廣泛應(yīng)用于石油、化工、新能源、半導(dǎo)體、礦業(yè)、醫(yī)藥、水利、市政、電力、環(huán)保等國家支柱領(lǐng)域。技術(shù)服務(wù)團(tuán)隊(duì)和產(chǎn)業(yè)匠人在上?？颂m平均工作服務(wù)達(dá)15年以上，將流體密封核心技術(shù)和經(jīng)驗(yàn)的積累傳承注入每一個(gè)克蘭產(chǎn)品，鑄就每一個(gè)克蘭產(chǎn)品非凡的可靠性和安全性，配套和服務(wù)大型集團(tuán)企業(yè)，踐行上?？颂m品質(zhì)口碑！同時(shí)遠(yuǎn)銷美國、俄羅斯、英國、法國、阿根廷、南非、日本、印度、馬來西亞、泰國等國際市場。

上?？颂m始終秉承和弘揚(yáng)中國匠造精神，以“誠信為本，質(zhì)量第一，增值服務(wù)，開拓創(chuàng)新”的宗旨，“國際標(biāo)準(zhǔn)，上海精造”的密封品質(zhì)，打造 “共建、共贏、共享”的制造平臺，共筑美好未來！

   Shanghai Kelan Seal Component Co., Ltd. (referred to as "Shanghai Kelan") was founded in 2001, with a self built factory office building and a construction area of 12000 square meters. Located in Shanghai Hongqiao International Central Business District, adjacent to the Hongqiao Comprehensive Transportation Hub, it is only a 10 minute drive away from the Hongqiao Hub. It also covers the Yangtze River Delta in 1 hour and major cities in Southeast Asia such as Japan and South Korea in 2-5 hours, giving it a unique geographical advantage.

    Shanghai Kelan is one of Shanghai specialized, sophisticated, unique and novel small and medium-sized enterprises, a high-tech enterprise specializing in the research and production of mechanical seals, with products including pump mechanical seals, reactor mechanical seals, agitator mechanical seals, sand mill mechanical seals, dry gas seals, sealing auxiliary systems, bearing protectors, and non-standard customized mechanical seals. Provide comprehensive solutions and value-added services for mechanical seals throughout their entire lifecycle, including research and development, design, surveying, selection, production, testing, and technical support. Widely used in national pillar fields such as petroleum, chemical industry, new energy, semiconductor, mining, medicine, water conservancy, municipal engineering, electricity, environmental protection, etc. The technical service team and industrial workers have worked and served in Shanghai Kelan for an average of over 15 years, injecting the accumulation and inheritance of fluid sealing core technology and experience into every Kelan product, creating extraordinary reliability and safety for every Kelan product, supporting and serving large group enterprises, and practicing the quality reputation of Shanghai Kelan! At the same time, the products are exported to international markets such as the United States, Russia, the United Kingdom, France, Argentina, South Africa, Japan, India, Malaysia, Thailand, etc.

    Shanghai Kelan always adheres to and promotes the spirit of Chinese craftsmanship, with the purpose of "honesty, quality first, value-added services, and innovation", and the sealing quality of "international standards, Shanghai precision manufacturing", to create a manufacturing platform of "co-construction, win-win, and sharing", and build a better future together!