DBDS10G1A/100力士樂(lè )安全閥，武漢百士自動(dòng)化設備有限公司供應產(chǎn)品，現貨庫存，原廠(chǎng)原裝，質(zhì)量保障，假一罰十，價(jià)格優(yōu)惠；移動(dòng)電話(huà)：15307180902，商務(wù)QQ：980227448，傳真：027-87680708-608，聯(lián)系人：雷青；歡迎新老客戶(hù)咨詢(xún)購買(mǎi)！
安全閥是啟閉件受外力作用下處于常閉狀態(tài)，當設備或管道內的介質(zhì)壓力升高超過(guò)規定值時(shí)，通過(guò)向系統外排放介質(zhì)來(lái)防止管道或設備內介質(zhì)壓力超過(guò)規定數值的特殊閥門(mén)。安全閥屬于自動(dòng)閥類(lèi)，主要用于鍋爐、壓力容器和管道上，控制壓力不超過(guò)規定值，對人身安全和設備運行起重要保護作用。注安全閥必須經(jīng)過(guò)壓力試驗才能使用。
安全閥是閥門(mén)家族比較特殊的一個(gè)分支，它的特殊性是因為不同于其它閥門(mén)僅僅起到開(kāi)關(guān)的作用，更重要的是起到保護設備的安全。隨著(zhù)我國經(jīng)濟建設的快速發(fā)展，在帶有壓力操控的設備項目工程越來(lái)越多。鑒于設備泄壓的需要，安全閥在保護設備過(guò)程中起到至關(guān)重要的作用。截止2013年各類(lèi)安全閥制造商和貿易商已超過(guò)700多家，每日交易詢(xún)盤(pán)達到200多條，安全閥供求市場(chǎng)明顯升溫。通過(guò)季度數據初步分析，安全閥需求量要高出二十個(gè)百分點(diǎn)。安全閥是鍋爐、壓力容器和其他受壓力設備上重要的安全附件。安全閥(又稱(chēng)泄壓閥)是根據壓力系統的工作壓力(工作溫度)自動(dòng)啟閉，一般安裝于封閉系統的設備或管路上保護系統安全。當設備或管道內壓力或溫度超過(guò)安全閥設定壓力時(shí)，自動(dòng)開(kāi)啟泄壓或降溫，保證設備和管道內介質(zhì)壓力(溫度)在設定壓力(溫度)之下，保護設備和管道正常工作，防止發(fā)生意外，減少損失。安全閥主要被廣泛應用于：蒸汽鍋爐、液化石油氣汽車(chē)槽車(chē)或液化石油氣鐵路罐車(chē)、采油井、蒸汽發(fā)電設備的高壓旁路、壓力管道、壓力容器等。安全閥一般按結構形式分為彈簧式安全閥和杠桿式安全閥、脈沖式安全閥，其中彈簧式安全閥應用為普遍;按連接方式分為螺紋安全閥和法蘭安全閥。安全閥口徑一般都不大，常用的都在DN15mm-DN80mm之間，超過(guò)150mm一般都稱(chēng)為大口徑安全閥。2013年安全閥行業(yè)市場(chǎng)規模擴大，這已是一個(gè)不爭的事實(shí)。我國能夠有資質(zhì)生產(chǎn)安全閥會(huì )。
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液壓傳動(dòng)是一種可達到傳遞動(dòng)力、增加動(dòng)力、改變速比等目的的傳動(dòng)方式。液壓傳動(dòng)是以液體為工作介質(zhì)，靠處于密閉容器內的液體靜壓力來(lái)傳遞力的傳動(dòng)方式，靜壓力的大小取決于負載，而負載速度的傳遞是按液體容積變化相等的原則進(jìn)行的，其速度大小取決于流量；如果忽略損失，液壓傳動(dòng)所傳遞的力與速度無(wú)關(guān)。
液壓傳動(dòng)相比其他傳統傳動(dòng)方式優(yōu)勢較為明顯：1）功率重量比大，能以較輕的設備重量取得更大的力和轉矩；2）慣性小，啟動(dòng)、制動(dòng)迅速；3）無(wú)級調速，調速范圍大，低速性能好；4）高響應速度；5）高負載剛度；6）可控性好，易于實(shí)現自動(dòng)化，液壓元件位臵可以根據設備需要進(jìn)行調整。
液壓傳動(dòng)已成為現代機械裝備與機電產(chǎn)品的重要基礎技術(shù)，在工業(yè)機械領(lǐng)域有著(zhù)極為廣泛的應用。液壓系統的應用領(lǐng)域包括：工業(yè)生產(chǎn)（鍛壓機械、注塑機、機床、加工中心、機器人、礦山機械、包裝機械等）、行走機械（工程機械、建筑機械、農業(yè)機械、汽車(chē)等）、航空航天（飛機、宇宙飛船、衛星發(fā)射裝臵等）、艦船（船舶及艦艇甲板機械、操作及控制系統）、海洋工程（海洋開(kāi)發(fā)平臺、海底鉆探、水下作業(yè)等）。以國外為例，約95%的工程機械、90%的數控加工中心、95%的自動(dòng)化生產(chǎn)線(xiàn)均采用液壓傳動(dòng)。此外，根據工業(yè)機械設備使用的液壓系統壓力條件不同，可按其額定壓力分為低壓系統（<6.3MPa）、中壓系統（6.3-10MPa）、中高壓系統（10-20MPa）和高壓系統（>20MPa）。
液壓系統主要由5個(gè)部分組成，泵、閥、油缸、馬達為核心元件。典型的液壓系統由動(dòng)力元件（主要是液壓泵）、控制元件（主要是液壓閥）、執行元件（包括液壓油缸、液壓馬達）、輔助元件（包括油箱、過(guò)濾器、蓄能器、熱交換器）、工作介質(zhì)（包括礦物油、乳化液、液壓油等）5個(gè)部分組成，其中泵、閥、油缸、馬達的技術(shù)難度大、產(chǎn)品附加值高、價(jià)值占比較高，是液壓系統的核心元件。
液壓泵：主要有柱塞泵、齒輪泵、葉片泵和螺桿泵。其中，柱塞泵、葉片泵屬于高壓泵，齒輪泵屬于低壓泵。以柱塞泵為例，其密封工作腔構件為圓柱形的柱塞和缸體，容易得到較高的配合精度，特點(diǎn)是泄漏量小，容積效率高，可以在高壓下工作；由于柱塞泵壓力高、結構緊湊、效率高、流量調節方便，故在需要高壓、大流量、大功率的系統中和流量需要調節的場(chǎng)合，如工程機械、礦山冶金機械、船舶、重型刨床及液壓機等設備上廣泛應用。
液壓閥：主要分為方向閥、流量閥、壓力閥。方向閥用于控制系統中的油流方向，包括換向閥、單向閥等；流量控制閥，用于控制液壓系統中油的流量，包括節流閥、調速閥等；壓力控制閥，用于控制系統中的油壓，包括溢流閥、減壓閥、順序閥等；上述三類(lèi)閥可組成各種復合閥。
液壓油缸：液壓缸由缸體、可移動(dòng)的活塞和連接活塞的活塞桿組成，缸體兩端用端蓋進(jìn)行封閉，端蓋可采用螺紋、卡圈、拉桿或焊接等方式與缸體連接；分為雙作用式、單作用式、伸縮式。
液壓馬達：分為單向、雙向液壓馬達，也分為定量馬達與變量馬達。