DBDS10G1A/100力士乐安全阀，武汉百士自动化设备有限公司供应产品，现货库存，原厂原装，质量保障，假一罚十，价格优惠；移动电话：15307180902，商务QQ：980227448，传真：027-87680708-608，联系人：雷青；欢迎新老客户咨询购买！
安全阀是启闭件受外力作用下处于常闭状态，当设备或管道内的介质压力升高超过规定值时，通过向系统外排放介质来防止管道或设备内介质压力超过规定数值的特殊阀门。安全阀属于自动阀类，主要用于锅炉、压力容器和管道上，控制压力不超过规定值，对人身安全和设备运行起重要保护作用。注安全阀必须经过压力试验才能使用。
安全阀是阀门家族比较特殊的一个分支，它的特殊性是因为不同于其它阀门仅仅起到开关的作用，更重要的是起到保护设备的安全。随着我国经济建设的快速发展，在带有压力操控的设备项目工程越来越多。鉴于设备泄压的需要，安全阀在保护设备过程中起到至关重要的作用。截止2013年各类安全阀制造商和贸易商已超过700多家，每日交易询盘达到200多条，安全阀供求市场明显升温。通过季度数据初步分析，安全阀需求量要高出二十个百分点。安全阀是锅炉、压力容器和其他受压力设备上重要的安全附件。安全阀(又称泄压阀)是根据压力系统的工作压力(工作温度)自动启闭，一般安装于封闭系统的设备或管路上保护系统安全。当设备或管道内压力或温度超过安全阀设定压力时，自动开启泄压或降温，保证设备和管道内介质压力(温度)在设定压力(温度)之下，保护设备和管道正常工作，防止发生意外，减少损失。安全阀主要被广泛应用于：蒸汽锅炉、液化石油气汽车槽车或液化石油气铁路罐车、采油井、蒸汽发电设备的高压旁路、压力管道、压力容器等。安全阀一般按结构形式分为弹簧式安全阀和杠杆式安全阀、脉冲式安全阀，其中弹簧式安全阀应用为普遍;按连接方式分为螺纹安全阀和法兰安全阀。安全阀口径一般都不大，常用的都在DN15mm-DN80mm之间，超过150mm一般都称为大口径安全阀。2013年安全阀行业市场规模扩大，这已是一个不争的事实。我国能够有资质生产安全阀会。
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液压传动是一种可达到传递动力、增加动力、改变速比等目的的传动方式。液压传动是以液体为工作介质，靠处于密闭容器内的液体静压力来传递力的传动方式，静压力的大小取决于负载，而负载速度的传递是按液体容积变化相等的原则进行的，其速度大小取决于流量；如果忽略损失，液压传动所传递的力与速度无关。
液压传动相比其他传统传动方式优势较为明显：1）功率重量比大，能以较轻的设备重量取得更大的力和转矩；2）惯性小，启动、制动迅速；3）无级调速，调速范围大，低速性能好；4）高响应速度；5）高负载刚度；6）可控性好，易于实现自动化，液压元件位臵可以根据设备需要进行调整。
液压传动已成为现代机械装备与机电产品的重要基础技术，在工业机械领域有着极为广泛的应用。液压系统的应用领域包括：工业生产（锻压机械、注塑机、机床、加工中心、机器人、矿山机械、包装机械等）、行走机械（工程机械、建筑机械、农业机械、汽车等）、航空航天（飞机、宇宙飞船、卫星发射装臵等）、舰船（船舶及舰艇甲板机械、操作及控制系统）、海洋工程（海洋开发平台、海底钻探、水下作业等）。以国外为例，约95%的工程机械、90%的数控加工中心、95%的自动化生产线均采用液压传动。此外，根据工业机械设备使用的液压系统压力条件不同，可按其额定压力分为低压系统（<6.3MPa）、中压系统（6.3-10MPa）、中高压系统（10-20MPa）和高压系统（>20MPa）。
液压系统主要由5个部分组成，泵、阀、油缸、马达为核心元件。典型的液压系统由动力元件（主要是液压泵）、控制元件（主要是液压阀）、执行元件（包括液压油缸、液压马达）、辅助元件（包括油箱、过滤器、蓄能器、热交换器）、工作介质（包括矿物油、乳化液、液压油等）5个部分组成，其中泵、阀、油缸、马达的技术难度大、产品附加值高、价值占比较高，是液压系统的核心元件。
液压泵：主要有柱塞泵、齿轮泵、叶片泵和螺杆泵。其中，柱塞泵、叶片泵属于高压泵，齿轮泵属于低压泵。以柱塞泵为例，其密封工作腔构件为圆柱形的柱塞和缸体，容易得到较高的配合精度，特点是泄漏量小，容积效率高，可以在高压下工作；由于柱塞泵压力高、结构紧凑、效率高、流量调节方便，故在需要高压、大流量、大功率的系统中和流量需要调节的场合，如工程机械、矿山冶金机械、船舶、重型刨床及液压机等设备上广泛应用。
液压阀：主要分为方向阀、流量阀、压力阀。方向阀用于控制系统中的油流方向，包括换向阀、单向阀等；流量控制阀，用于控制液压系统中油的流量，包括节流阀、调速阀等；压力控制阀，用于控制系统中的油压，包括溢流阀、减压阀、顺序阀等；上述三类阀可组成各种复合阀。
液压油缸：液压缸由缸体、可移动的活塞和连接活塞的活塞杆组成，缸体两端用端盖进行封闭，端盖可采用螺纹、卡圈、拉杆或焊接等方式与缸体连接；分为双作用式、单作用式、伸缩式。
液压马达：分为单向、双向液压马达，也分为定量马达与变量马达。
