北部精机电磁换向阀SWH-G02-B21-A220-10
北部精机电磁换向阀SWH-G02-B21-A220-10
北部精机电磁换向阀SWH-G02-B21-A220-10
优点编辑
动作准确、自动化程度高、工作稳定可靠，但需附设驱动和冷却系统，结构较为复杂；阀瓣式结构则较简单，多用于流量较小的生产工艺上。
在石油、化工、矿山和冶金等行业中，六通换向阀是一种重要的流体换向设备。该阀安装在稀油润滑系统输送润滑油的管道中。通过变换密封组件在阀体中的相对位置，使阀体各通道连通或断开，从而控制流体的换向和启停。
换向阀的主要性能编辑
以电磁阀的项目为最多，它主要包括下面几项：
1.工作可靠性
指电磁铁通电后能否可靠地换向，而断电后能否可靠地复位。电磁阀也只有在一定的流量和压力范围内才能正常工作。这个工作范围的极限称为换向界限。
2.压力损失
由于电磁阀的开口很小，故液流流过阀口时产生较大的压力损失。
3.内泄漏量
在各个不同的工作位置，在规定的工作压力下，从高压腔漏到低压腔的泄漏量为内泄漏量。过大的内泄漏量不仅会降低系统的效率，引起过热，而且还会影响执行机构的正常工作。
4.换向和复位时间
交流电磁阀的换向时间一般为0.03～0.05s，换向冲击较大;而直流电磁阀的换向时间为0.1～0.3s，换向冲击较小。通常复位时间比换向时间稍长。
5.换向频率
换向频率是在单位时间内阀所允许的换向次数。目前单电磁铁的电磁阀的换向频率一般为60次/min。
6.使用寿命
电磁阀的使用寿命主要取决于电磁铁。湿式电磁铁的寿命比干式的长，直流电磁铁的寿命比交流的长。
7.滑阀的液压卡紧现象
滑阀的液压卡紧现象不仅在换向阀中有，其他的液压阀也普遍存在，在高压系统中更为突出，特别是滑阀的停留时间越长，液压卡紧力越大，以致造成移动滑阀的推力（如电磁铁推力）不能克服卡紧阻力，使滑阀不能复位。
引起液压卡紧的原因，有的是由于脏物进入缝隙而使阀芯移动困难，有的是由于缝隙过小在油温升高时阀芯膨胀而卡死，但是主要原因是来自滑阀副几何形状误差和同心度变化所引起的径向不平衡液压力。为了减小径向不平衡力，应严格控制阀芯和阀孔的制造精度，在装配时，尽可能使其成为顺锥形式，另一方面在阀芯上开环形均压槽，也可以大大减小径向不平衡力
台湾北部精机电磁换向阀SWH-G02-C8-A220-10
台湾北部精机电磁换向阀SWH-G02-C8M-A220-10
台湾北部精机电磁换向阀SWH-G02-C88M-A220-10
台湾北部精机电磁换向阀SWH-G02-C9-A220-10
台湾北部精机电磁换向阀SWH-G02-C92-A220-10
台湾北部精机电磁换向阀SWH-G02-C2B-A220-10
台湾北部精机电磁换向阀SWH-G02-C3B-A220-10
台湾北部精机电磁换向阀SWH-G02-C4B-A220-10
台湾北部精机电磁换向阀SWH-G02-C40B-A220-10
台湾北部精机电磁换向阀SWH-G02-C5B-A220-10
台湾北部精机电磁换向阀SWH-G02-C6B-A220-10
台湾北部精机电磁换向阀SWH-G02-C60B-A220-10
台湾北部精机电磁换向阀SWH-G02-C7B-A220-10
台湾北部精机电磁换向阀SWH-G02-C8B-A220-10
台湾北部精机电磁换向阀SWH-G02-C9B-A220-10
北部精机电磁换向阀SWH-G02-N2-A220-10
北部精机电磁换向阀SWH-G02-N3-A220-10
北部精机电磁换向阀SWH-G02-D2-A220-10
北部精机电磁换向阀SWH-G02-D3-A220-10
北部精机电磁换向阀SWH-G02-B2-A220-10
北部精机电磁换向阀SWH-G02-B20-A220-10
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北部精机电磁换向阀SWH-G02-B2S-A220-10
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北部精机电磁换向阀SWH-G02-C3BS-A220-10
北部精机电磁换向阀SWH-G02-C4BS-A220-10
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