This series butterfly valve is suitable to use in the industry pipe of metallurgical, ore building material. Paper textile and so on, Accord to the different signal in the pipes of the gas half fluid medium. Change the flow volume, and adjust the fan volume automatically. It can realize automatic control. The valve is used good welding structure. It is characterized by light, nimble good sealing, short open time, fast speed broken and dependable. 二、煙氣管道防爆電動蝶閥結構及工作原理 Ⅱ.The structure and Working principle 1、電動蝶閥由電動執(zhí)行機構和蝶閥組成，有關電動執(zhí)行機構作用原理，使用維護等參閱電動執(zhí)行機構說明書。 1、The electric butterfly valve is composed of electric execute structure and butter fly valve. The relative electric execute. Working principle and main is refer to the operation manual of electric executor. 2、電動蝶閥按作業(yè)方式可分為電開式和電關式兩種。電開式：無信號電流時，閥處于關閉位置，隨著信號電流從0～10A或從4～20mA的增加，閥從關閉位置逐漸轉向全開位置。電關式：無信號電流時，閥處于開位置，隨著信號電流從0～10A或從4～20mA的增加，閥從全開位置逐漸轉向關閉位置。在一般情況下，用戶不提出要求，按電關式調整出廠。 2、The electric butterfly valve have open and close type according to the way. Electric and open type: When there is signal current, the valve is in close position. With the addition of signal current from 0～10A or 4～20A, the valve is from close position to open position. Electric and close type: When there is no signal current, the valve is in open position. With the addition of signal current from 0～10A or 4～20A, the valve is from open position to close position. Generally the valve leave the factory in electric and close type. 作用原理：從操作器來的信號電流，進入電動執(zhí)行機構，使其輸出一個相應的角位移，帶動連桿，使閥板有一個相應的角位移。由于閥板在閥體內轉動，改變流通截面，達到對介質流量的調節(jié)。電動蝶閥在設計上采用閥板在關閉狀態(tài)時有一始角10°，因此，在關閉時，其泄漏面積較小，故其具有較低的泄漏量。當信號電流因故中斷時，可將電動執(zhí)行機構的電動機“旋鈕”撥在手動位置，然后將手輪連軸向外拉出，用手轉動手輪。由手動轉入自動運行時，必須將“旋鈕”撥到“自動”位置，并將手輪推入。 Working principle: The signal current from the operator enter in to electric execute structure. Make it output a suitable rotated angle movement. With the pole, the valve plate have a suitable rotated angle movement. Because the valve plate is rotated in valve body, change the flow section. Adjust the medium flow volume. When the electric butterfly valve is used valve plate, there is a start angle (10 degree)in design. So the leakage area is smaller, the leakage volume is lower. When signal current is broken, put the button of electric execute structure in hand position. Then the hand wheel is drawn out. Drive the hand wheel in hand. When the hand position change into automatic position, put the button on automatic position. 三、煙氣管道防爆電動蝶閥安裝使用與維護 Ⅲ、Installation and maintenance 1、電動蝶閥最好安裝在水平管道上，如需安裝要垂直管道上，用戶在訂貨時應注明。 The electric butterfly valve had better install the horizontal pipe. If the client request to install the vertical pipe. 2、煙氣管道防爆電動蝶閥使用在振動的情況下，安將時應加支承和加固。 When the big mouth butterfly valve is used in vibrated condition, it should be support and strength. 3、電動執(zhí)行機構的調整、使用與維護見電動執(zhí)行器說明書。 The adjustment of electric executor structure, operation and maintenance see the operation manual of elector. 四、主要外型及連接尺寸 Ⅳ.The main outline and connection size
 
煙氣管道防爆電動蝶閥由溫度傳感器、溫度控制板、電動執(zhí)行機構、防爆蝶閥構成。
適用傳熱系統(tǒng)軟件出水溫度操縱；根據自動調節(jié)熱力設備一次側蒸氣或水介質的總流量來確保二次側的出水溫度維持在設置溫度。當溫度傳感器的精確測量溫度超過預設值時，溫度控制板輸出操縱數據信號使電動蝶閥調小或關掉一次側的介質總流量；當溫度傳感器的精確測量溫度低于預設值時，溫度控制板輸出操縱數據信號使電動蝶閥放大，擴大一次側的介質總流量，進而使二次側出水溫度做到設定目標溫度。
 
煙氣管道電動防爆蝶閥構成
1、控制板：控制板具備PI、PID調整作用，操縱多控制回路操縱，作用多種多樣，可完成液體總流量、工作壓力、壓力差、溫度、環(huán)境濕度、露點溫度和空氣指數的操縱。
2、電動執(zhí)行機構：電動式腳踏式和電動式油壓式，含有手動式和自動調節(jié)作用，調整靈巧，關閉力大，總流量特點可調式（線形等百分數）。電動式油壓式電動執(zhí)行機構帶關閉電源全自動校準維護作用，可接受0-10V或4-20MA的數據信號并含有閥位意見反饋作用。
3、防爆電動蝶閥為單座反方向閥，螺栓連接或活套法蘭，油路板材料為黃銅、紫銅、灰鐵、灰鑄鐵、鑄鋼件等，規(guī)格DN10.。.DN150，介質溫度-25.。.350℃。適用循環(huán)系統(tǒng)管道冷藏水，底壓開水、日常生活開水、髙壓開水、海面、滾油、和蒸汽的調整、線形好、可調式比大、密封性嚴實、耐熱、防氣蝕?？偠灾?，可依據客戶的不一樣應用工作狀況，挑選高性價比的、適合的、平穩(wěn)靠譜的閘閥系列產品。
4、溫度傳感器：精確測量介質溫度，類型齊備。按安裝部位可分成：浸入式溫度傳感器、整合式溫度傳感器、風列管式溫度傳感器、房間內溫度傳感器、戶外溫度傳感器等各種類型。