王中王四肖精选一肖

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          電動調理閥

          德國漢克(HANK)專業供給出口電動調理閥産品,歐洲著名認證廠家,最新最全優良出口電動調理閥推舉,歡迎來電洽商與協作,征詢熱線:-0270。

          • 價錢:5800
          • 材質:球墨鑄鐵、碳鋼、不鏽鋼
          • 壓力:PN16-40
          • 通徑:DN20-DN200
          • 型號:EC4000
          電動調理閥是工業主動化進程掌握中的主要履行單位儀表。隨著工業範疇的主動化水平愈來愈高,正被愈來愈多的運用在各類工業臨盆範疇中。德國漢克(HANK)電動調理閥與傳統的氣動調理閥比擬具有顯著的長處:節能(只在任務時才消費電能),環保(無碳排放),裝置快捷便利(無需龐雜的氣動管路和藹泵任務站)。閥門按其所配履行機構應用的動力,按其功效和特征分爲線性特征,等百分比特征及抛物線特征三種。
          選用準繩
          1、電動調理閥選用重要掌握參數爲:公稱直徑、設計公稱壓力、介質許可溫度規模、流量系數等。
          2、關於請求流量和開啓高度成反比例關系的嚴厲場所,應選用公用調理閥。球閥和蝶閥普通粗調時可以選用。
          3、閥門的密封機能是考察閥門質量好壞的重要目標之一。
          閥門的密封機能重要包含兩個方面,即內漏和外漏。內漏是指閥座與封閉件之間對介質到達的密封水平。外漏是指閥杆填料部位的泄漏,中口墊片部位的泄漏和閥體因鍛造缺點釀成的泄漏。外漏是不許可產生的。
          4、調理閥幻想流量特征有快開、抛物線、線性、等百分比四種,需依據現實任務流量特征選擇具有適合流量特征的調理閥。
          5、調理閥公稱直徑的拔取應依據所需閥門流暢才能肯定。
          調理閥公稱直徑不該過大或太小。過大,增長工程本錢,而且閥門處于低百分比規模內,調理精度下降,使掌握機能變差。太小,增長體系阻力,乃至會湧現閥門100%開啓時,體系仍沒法到達設定的容量請求。
          6、調理閥的調理壓差和關斷壓差
          關於調理閥,其許可的調理壓差和關斷壓差是其選型的主要目標。現實壓差如高于調理閥許可的調理壓差,閥門會湧現不克不及精確調理的成績,嚴重的會毀傷閥門履行器。
          裝置留意事項
          1、調理閥屬于現場儀表,請求情況溫度應在-25~60℃規模,絕對濕度≤95%。假如是裝置在露天或低溫場所,應采用防水、降溫辦法。在有震源的處所要闊別振源或增長防振辦法。
          2、調理閥普通應垂直裝置,特別情形下可以傾斜,如傾斜角度很大或許閥自己自重太大時對閥應增長支承件掩護。
          3、裝置調理閥的管道普通不要離空中或地板太高,在管道高度大于2m時應盡可能設置平台,以利于操作手輪和便于停止維修。
          4、調理閥裝置前應對管路停止清洗,消除汙物和焊渣。裝置後,爲包管不使雜質殘留在閥體內,還應再次對閥門停止清洗,即通入介質時應使壹切閥門開啓,以避免雜質卡住。在應用手輪機構後,應恢複到本來的空檔地位。
          5、爲了使調理閥在產生毛病或維修的情形下使臨盆進程能持續停止,調理閥應加旁通管路。
          同時還應特殊留意,調理閥的裝置地位能否相符工藝進程的請求。
          6、電動調理閥的電氣部門裝置應依據有關電氣設備施工請求停止。在應用維修中,在易爆場合嚴禁通電開蓋維修和對隔爆面停止撬打。同時在拆裝中不要磕傷或劃傷隔爆面,檢驗後要復原成本來的隔爆請求狀況。
          7、履行機構的加速器拆修後應留意加油光滑,低速機電普通不要拆洗加油。拆卸後還應檢討閥位與閥位開度指導能否符合。
          The electric control valve is an important execution unit instrument in the process of industrial automation process control. With the increasing degree of automation in the industrial sector, is being used more and more in a variety of industrial production areas. Germany Hank (HANK) electric control valve compared with the traditional pneumatic control valve has obvious advantages: energy (only when the work of electricity consumption), environmental protection (no carbon emissions), quick and easy installation (no need for complex pneumatic pipe And air pump workstations). The valve is divided into linearity, equal percentage characteristic and parabolic characteristic according to its function and characteristic according to the power used by its implementing agency.
          Selection principle
          1, electric control valve selection The main control parameters are: nominal diameter, design nominal pressure, medium allowable temperature range, flow coefficient and so on.
          2, for the required flow and open height proportional relationship between the strict occasions, should use a special control valve. Ball valve and butterfly valve can be used when the general coarse adjustment.
          3, the sealing performance of the valve is one of the key indicators of the quality of the valve.
          Valve sealing performance mainly includes two aspects, namely, internal leakage and leakage. The internal leakage is the degree of sealing between the valve seat and the closing member to the medium. Exposure is the leakage of the valve stem, the leakage of the gasket in the mouth and the leakage of the valve body due to casting defects. Exposure is not allowed to happen.
          4, the ideal flow characteristics of the control valve are open, parabolic, linear, and other percentage of four, according to the actual working flow characteristics with the appropriate choice of flow characteristics of the control valve.
          5, the selection of the nominal diameter of the valve should be determined according to the required valve circulation capacity.
          The nominal diameter of the regulating valve should not be too large or too small. Too large to increase the cost of the project, and the valve is in the low percentage range, the adjustment precision is reduced, the control performance is deteriorated. Too small, increase the system resistance, and even the valve will open 100%, the system still can not meet the set capacity requirements.
          6, the adjustment valve regulator pressure and turn off the pressure difference
          For the control valve, the allowable adjustment of differential pressure and shutdown pressure difference is an important indicator of its selection. The actual pressure difference is higher than the adjustment valve to adjust the pressure difference, the valve will not be able to accurately adjust the problem, serious damage to the valve actuator.
          Installation Precautions
          1, the control valve is a field instrument, requiring ambient temperature should be in the range of -25 ~ 60 ℃, relative humidity ≤ 95%. If it is installed in open air or high temperature occasions, should take waterproof, cooling measures. In a place where there is a source away from vibration sources or increase anti-vibration measures.
          2, the control valve should be installed vertically, under special circumstances can be tilted, such as the tilt angle or the valve itself is too large when the weight of the valve should be increased support.
          3, the installation of the valve control valve generally not from the ground or the floor is too high, the pipe height greater than 2m should try to set the platform to facilitate the operation of hand wheel and easy maintenance.
          4, the control valve should be installed before the pipeline cleaning, remove dirt and welding slag. After installation, in order to ensure that no impurities remain in the valve body, the valve should also be cleaned again, that is, access to the media should make all the valve open, so as not to impurity stuck. After using the handwheel mechanism, it should be restored to the original neutral position.
          5, in order to make the control valve in the event of failure or maintenance of the production process can continue, the control valve should be bypassed.
          At the same time should also pay special attention to the installation of the valve position is consistent with the requirements of the process.
          6, electric control valve electrical part of the installation should be based on the relevant electrical equipment construction requirements. In the use of maintenance, in the explosive place is strictly prohibited power cover maintenance and pry the surface of the explosion. At the same time in the disassembly do not knock or scratch the exposed surface, after repair to restore the original explosion-proof requirements of the state.

          7, the implementing agencies of the reducer should be noted that after the repair lubrication lubrication, low-speed motor generally do not wash and refuel. After assembly should also check the valve position and valve opening indicator is consistent.


          王中王四肖精选一肖
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