內螺紋零壓差電磁閥
簡要描述：RETZ進口內螺紋黃銅、不銹鋼零壓差電磁閥是一種分步直動式電磁閥，彈簧耦合結構，PTFE組合膜片，更堅固耐用·適用多種流體介質
品牌：RETZ- 工況條件：零壓差啟動
- 溫度/壓力：P-T: 0-10bar@120℃
- 更新時間：2023/04/07
技術參數 Technical parameter
零壓差電磁閥實際上就是一種分步直動式電磁閥，結構合理，動作可靠，在零壓力差時工作也可靠，適用于真空系統
The zero pressure difference solenoid valve is actually a step-by-step direct acting solenoid valve, with a reasonable structure, reliable action, and reliable operation even at zero pressure difference. It is suitable for vacuum systems
二位二通常閉電磁閥，斷電關閉，通電打開 Two position two normally closed solenoid valve, power off to close, power on to open
二位二通常開型電磁閥，斷電打開，通電關閉 Two position two normally open solenoid valve, power off to open, power on to close
動作類型 | 分步直動式（零壓差） |
控制方式 | 常閉式(標準)、常開式(可選) |
連接口 | G(標準)、NPT(可選) |
適用介質 | 中性介質，氣態或液態流體 |
流體黏度 | ≤21mm2/s |
閥體材質 | 黃銅、不銹鋼SS304、SS316 |
膜片、密封 | NBR、VITON、EPDM(可選) |
介質溫度 | NBR:-10～+80℃ FKM:-10～+110℃ EPDM:-20～+120℃ |
環境溫度 | -0～65℃(防爆型-20℃~40℃) |
標準電壓 | AC220V/230V/240V/10V/24V50/60HZDC24V/12V |
電壓變化 | ±10% |
防護等級 | IP65 |
安裝方式 | 可任意安裝，為增強使用壽命，最好使線圈朝上，水平安裝 |
規格尺寸 | 1/4-2” |
適用壓力 | 0-10Bar |
工作原理 working principle
有常閉和常開型二種 There are two types: normally closed and normally open
常閉型：采用一次開閥和二次開閥集于一體的形式，主閥和導閥分步有電磁力和壓力差作用來直接開啟主閥口。當線圈通電時，產生電磁力使動鐵芯和靜鐵芯吸合，導閥口開啟，而導閥口設在主閥口上，動鐵芯與主閥芯連在一起，此時主閥上腔的壓力通過
導閥口卸荷，在壓力差和電磁力的同時作用下，使用主閥芯向上運動，開啟主閥口，介質流通。當線圈斷電時電磁力消失，此時動鐵芯在自重和彈簧力的作用下關閉導閥孔，介質在平衡孔中進入主閥上腔，使上腔壓力升高，此時在彈簧復位和壓力作用下關閉主閥口，介質斷流。
Normally closed type: Adopting a combination of primary and secondary opening valves, the main valve and pilot valve have electromagnetic force and pressure difference in steps to directly open the main valve port. When the coil is energized, electromagnetic force is generated to cause the moving iron core and the static iron core to engage, and the pilot valve port is opened. The pilot valve port is located on the main valve port, and the moving iron core is connected to the main valve core. At this time, the pressure in the upper chamber of the main valve is unloaded through the pilot valve port. Under the simultaneous action of pressure difference and electromagnetic force, the main valve core is moved upwards, opening the main valve port, and the medium flows. When the coil loses power, the electromagnetic force disappears. At this time, the moving iron core closes the pilot valve hole under the action of its own weight and spring force, and the medium enters the upper chamber of the main valve in the balance hole, causing the pressure in the upper chamber to increase. At this time, the main valve port is closed under the action of spring reset and pressure, and the medium is cut off
常開型：與常閉型正好相反 Normally open type: exactly opposite to normally closed type
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