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        • 電動執行機構
        • 閘閥、蝶閥
        首頁 > 技術文章 > 羅托克電動執行器的內部結構與功能

        羅托克電動執行器的內部結構與功能

        2018-12-10

        The function of electric actuator internal structure

        電動執行器紅外線設定
        Infrared setting of electric actuator

        通過密封的指示窗,可對執行器進行全部設定和診斷。無需在現場打開電氣箱蓋而暴露內部的控制電路。設定器與窗口的有效對話距離為0.75米。
         The actuator can be set and diagnosed completely through the sealed indicator window. It is not necessary to open the electrical box cover in the field to expose the internal control circuit. The effective dialogue distance between the setter and the window is 0.75 meters.

        電動執行器手動操作
        Manual operation of electric actuato

        在電源故障時可通過低速鎖扣式手動/自動離合器直接驅動手輪(或較大型號上使用獨立齒輪傳動手輪),對執行器進行開關操作。
        When a power failure occurs, the hand wheel can be driven directly via a slow-locking manual/automatic clutch (or a separate gear-driven hand wheel on larger models) to switch actuators.

        如果切換桿在自動位置,電動驅動為有效驅動,而在手動位置時,則手動驅動為有效,如有緊急情況可將切換桿壓下“手動”位置,避免故障發生。
        If the switching lever is in the automatic position, the electric drive is effective, while in the manual position, the manual drive is effective, and if there is an emergency, the switch lever can be put down by "manual" position to avoid the failure.

        手動操作具有空程“錘擊”效果,有利于輕松地操作閥門。
        The manual operation has an empty "hammer" effect, which is easy to operate the valve.

        電動執行器電機及驅動
        Electric actuator motor and drive

        電機軸與蝸桿是相互獨立的,以便于快速更換。蝸輪、蝸桿單獨浸泡在潤滑油中運行,適合了大的環境溫差。低慣性、高力矩電機使得電機啟動后可迅速達到峰值力矩,而非勵磁時幾乎沒有超限運動。線圈內有的溫度傳感器,它不受周圍環境溫度的影響,可以使電機處于合適熱容量中。
        The motor shaft and worm are independent of each other for quick replacement. The worm gear and worm are immersed in the lubricating oil and is suitable for the maximum ambient temperature difference. Low-inertia, high-torque motor allows the peak torque to be reached quickly after the motor is startup, and there is almost no overrun motion when it is not excited. The coil has an accurate temperature sensor, which is not affected by the ambient temperature and can keep the motor in optimum heat capacity.

        接線端子箱
        Terminal box

        雙密封保護設計的端子箱在打開接線端子箱蓋進行現場接線時,單獨密封的端子箱也可保證電動裝置內電器部分的密封完整性。
        When the cover of terminal box with double seal protection is opened for field wiring, the individually sealed terminal box also can ensure the integrity of the electrical part in the electric device.

        推力座
        Thrust seat

        IQ35以下型號裝有‘A’型軸套、可潤滑及可拆卸式推力型底座,可在不改變閥位的情況卸下執行器。IQ40以上執行器的推力型底座與外殼為一體化組裝。
        The models below IQ35 are equipped with 'A' bushing, lubricable and detachable thrust type base, and the actuator can be removed without changing the valve position. The thrust type base and shell of the model above IQ40 actuators are integrally assembled.

        簡單的、可拆卸的驅動軸套可按照閥桿進行加工,以便與閥門連接。
        Simple, removable drive bushings can be machined to the valve stem for easier connection to the valve.

        閥位控制
        Valve position control

        霍爾效應脈沖計數編碼系統可地測量和控制執行器的行程,而不采用開關和齒輪計數定位,提高了位置精度(可選配光電位置編碼器)。
         Hall effect pulse count coding system can accurately measure and control the stroke of the actuator instead of use switch and gear count positioning, which improves the position accuracy ( optional optoelectronic absolute position encoder).

        電動執行器就地控制
        Local control of electric actuator

        現場控制開關和鎖扣式現場/停止/遠程選擇器為無貫通軸的磁性開關,通過作用執行器的內部磁簧進行控制,保證了執行器的密封防潮要求。
        The on-site control switch and lock-type field/stop/remote selector are magnetic switches without through-shafts. They are controlled by acting on the internal magnetic reeds of the actuator to ensure that the actuator is sealed against moisture.

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