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電動執(zhí)行器在終端用戶現(xiàn)場排污系統(tǒng)中是怎樣應(yīng)用的呢？天蝶閥門技術(shù)人員帶您來認(rèn)識一下。

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電動執(zhí)行器在污染源總量控制系統(tǒng)中的應(yīng)用介紹
Application of electric actuators in total emission control system of pollution sources

電動執(zhí)行器在污染源總量控制系統(tǒng)中的相關(guān)應(yīng)用
Application of electric actuators in total pollution control system
近年來，環(huán)評工作對規(guī)劃和建設(shè)項(xiàng)目實(shí)施后可能造成的環(huán)境影響進(jìn)行分析、預(yù)測和評估以后，環(huán)保部門引入了污染源總量控制的管理制度，從源頭上對污染源排放量進(jìn)行了嚴(yán)格把關(guān)。一旦確認(rèn)超總量的現(xiàn)象發(fā)生，負(fù)責(zé)人員馬上通過污染源總量控制系統(tǒng)的遠(yuǎn)程端將閥門關(guān)死，不讓污染源進(jìn)一步的擴(kuò)散，這種方式為環(huán)境執(zhí)行提供了一種自動化的解決方案。
In recent years, after the environmental impact analysis, prediction and evaluation of the environmental impact on the implementation of the planning and construction projects, the environmental protection department has introduced the management system of the total amount control of pollution sources, and strictly controls the emission of the source of pollution from the source. Once the excess amount is recognized, the law enforcement officers immediately pass the valve through the remote end of the total pollution source control system to prevent further diffusion of the source of the pollution, which provides an automated solution for environmental enforcement.

（伯納德電動執(zhí)行器）

電動執(zhí)行器的工作原理
The working principle of electric actuator
電動執(zhí)行器是自動控制系統(tǒng)中的執(zhí)行機(jī)構(gòu)和控制閥組合體。它在自動控制系統(tǒng)中的作用是接受來自調(diào)節(jié)器發(fā)出的信號，以其在工藝管路的位置和特性，調(diào)節(jié)工藝介質(zhì)的流量，從而控制在生產(chǎn)過程所要求的范圍內(nèi)。
The electric actuator is the actuator and control valve assembly in the automatic control system. Its role in the automatic control system is to accept the signal from the regulator, to regulate the flow of the process medium in the position and characteristics of the process pipeline, and to control the range required in the production process.

（DKJ電動執(zhí)行器）

電動執(zhí)行器的組成結(jié)構(gòu)
The structure of the electric actuator
電動執(zhí)行器包括執(zhí)行和調(diào)節(jié)兩大機(jī)構(gòu)組成。控制器發(fā)送電流信號給電控裝置，電控裝置控制通過執(zhí)行機(jī)構(gòu)（一般為電機(jī)）的轉(zhuǎn)動移位，執(zhí)行器將閥門開度轉(zhuǎn)到一定的位置時(shí)，通過簡易的齒輪單元帶動滑動變阻器阻值的發(fā)生變化，經(jīng)過檢測單元對相應(yīng)位置的滑動變阻器的阻值進(jìn)行轉(zhuǎn)換成電流或者電壓信號，反饋后比較控制信號，直到與控制器發(fā)送的電流相吻合的時(shí)候停止轉(zhuǎn)動，這一系列被稱為調(diào)節(jié)單元。
The electric actuator consists of two main parts: execution and adjustment. The controller sends an electric current signal to the electronic control device. The electronic control device controls the rotation of the actuator (usually motor). When the actuator transfers the opening of the valve to a certain position, it changes the resistance of the sliding rheostat through a simple gear unit, and passes through the sliding rheostat of the detection unit to the corresponding position. The resistance is converted into a current or voltage signal, and the feedback is compared to the control signal until it is consistent with the current transmitted by the controller, and this series is called the adjustment unit.

（羅托克電動執(zhí)行器）

電動執(zhí)行器的現(xiàn)場安裝方式
On-the-spot installation of electric actuator
總量控制系統(tǒng)中，執(zhí)行器一般安裝在介質(zhì)的流動方向，一般和管道流量計(jì)在同一段管路上，并且需要安裝在流量計(jì)的后端，原因是執(zhí)行器的開合時(shí)候會出現(xiàn)渦流現(xiàn)象，容易在管路中產(chǎn)生一定的氣泡量，實(shí)踐安裝中，一般安裝在離流量計(jì)同一直管段的3倍管道直徑處（經(jīng)驗(yàn)值，可參考）。
In the total amount control system, the actuator is usually installed in the flow direction of the medium, generally and the pipe flowmeter in the same line, and need to be installed at the back end of the flowmeter. The reason is that the eddy current phenomenon occurs when the actuator is open and closing. It is easy to produce a certain amount of gas in the pipeline. In practice installation, it is generally installed in the installation. The flow meter is 3 times the pipe diameter of the tube section.

電動執(zhí)行器的校對方式
Proofreading mode of electric actuator
污染源總量控制系統(tǒng)中，執(zhí)行器在執(zhí)行過程中經(jīng)常出現(xiàn)角度的飄移，導(dǎo)致環(huán)境負(fù)責(zé)人員無法的打開和關(guān)閉電動執(zhí)行器，調(diào)節(jié)執(zhí)行器開度只要對其進(jìn)行兩點(diǎn)校正，同PH計(jì)校正原理，在關(guān)位和開位的位置處進(jìn)行校正。
In the total amount control system of pollution source, the actuator often appears angle drift during the execution process, which leads to the environment law enforcement personnel unable to open and close the electric actuator accurately, and adjust the actuator's opening as long as it is corrected at two points, and the correction principle of the pH meter and the position and the open position.

（DZW電動執(zhí)行器）

電動執(zhí)行器的運(yùn)維工作
Operation and maintenance of electric actuators
執(zhí)行器在使用中需對齒輪、軸類接縫，油封等地方進(jìn)行潤滑，對于長期不動作的閥門要進(jìn)行緩慢的步進(jìn)式開合操作，這樣既避免了電機(jī)卡死的堵轉(zhuǎn)現(xiàn)象，也保護(hù)了閥體不會因過大的力而受磨損的事故發(fā)生。
The actuator needs to be lubricated in the use of gear, shaft joint, oil seal and other places. For a valve that does not move for a long time, a slow step opening and closing operation is required. This avoids the blocking phenomenon of motor card death, and also protects the valve body from accidents caused by excessive force.
  
電動執(zhí)行器的安全作業(yè)
Safety operation of electric actuators
根據(jù)國家標(biāo)準(zhǔn)，交流電動機(jī)過載保護(hù)，應(yīng)符合如下規(guī)定：短時(shí)工作或斷續(xù)周期工作的電動機(jī)可不裝過載保護(hù)，但當(dāng)電動機(jī)運(yùn)行中可能發(fā)生堵轉(zhuǎn)時(shí)，應(yīng)裝設(shè)保護(hù)電動機(jī)堵轉(zhuǎn)的過載保護(hù)。在污染源總量控制系統(tǒng)中，由于污水水質(zhì)變化平凡，電機(jī)轉(zhuǎn)子堵轉(zhuǎn)概率較大，所以有必要安裝保護(hù)器。選擇保護(hù)器的類型需跳過啟動電流，小于堵轉(zhuǎn)電流。以下針對單相以及三相異步電機(jī)做如下選型推薦：
According to national standards, AC motor overload protection should be in accordance with the following provisions: short time working or intermittent cycle of the motor can not install overload protection, but when the motor may be blocked, the overload protection of the protective motor should be installed. In the total pollution control system, due to the ordinary change of sewage quality, the probability of motor rotor blocking is larger, so it is necessary to install protectors. The type of protector should be skipped starting current, less than blocking current. The following selection is recommended for single-phase and three-phase asynchronous motors.
（1）單相異步電機(jī)相關(guān)保護(hù)器選型。污染源總量控制系統(tǒng)項(xiàng)目中，使用的電動執(zhí)行器多以單相異步電機(jī)為主，保護(hù)器可以選用陶瓷保險(xiǎn)絲接入已安裝空開下的火線相。陶瓷型保險(xiǎn)絲具有無電弧及其他安全措施。（2）三相異步電機(jī)相關(guān)保護(hù)器選型。污染源總量控制系統(tǒng)項(xiàng)目中，有少量三相電動執(zhí)行器，空開下保護(hù)器可以選用：空開和交流電動機(jī)啟動器的整合。也可以使用空開和交流接觸器，外加熱繼電器的整合?？臻_建議使用動力型規(guī)格。
(1) Different selection of single-phase asynchronous motor related protector. In the project of total pollution source control system, the main electric actuators used are the single-phase asynchronous motor, and the protector can choose the ceramic fuse to connect with the open fire line. Ceramic fuse has no arc and other safety measures. (2) different selection of three phase asynchronous motor related protectors. There are a small number of three-phase electric actuators in the total pollution control system project. The open protector can be selected: the integration of open and AC motor starters. Can also use the circuit breaker and AC contactor, integrated heating relay. Recommend the use of air power specifications.
電動執(zhí)行器關(guān)注安全方面，特別推出兩種不同安全規(guī)格的產(chǎn)品供給我們選擇：（1）防爆、防水型。工作在石油、煤礦等環(huán)境特別惡劣的場所，具有防爆，防水的效果。防水的別可以做到長期在水下進(jìn)行作業(yè)。（2）普通型。一般化工等制造型企業(yè)，適應(yīng)一般的場所使用。
Electric actuators are concerned about safety. Two kinds of products with different safety specifications are specially selected for our selection: (1) explosion-proof and waterproof type. Working in oil, coal and other environments, especially in harsh environment, it has the effect of explosion-proof and waterproof. The highest level of waterproofing can be done underwater for a long time. (2) common type. General chemical and other modeling enterprises adapt to the general use of places.

電動執(zhí)行器優(yōu)缺點(diǎn)
Advantages and disadvantages of electric actuators
相對應(yīng)于手動執(zhí)行閥門方式，電動執(zhí)行器關(guān)閥具有以下優(yōu)缺點(diǎn)：
優(yōu)點(diǎn)：（1）執(zhí)行，控制角度。人可以不到現(xiàn)場，通過網(wǎng)絡(luò)將上位機(jī)的控制信號傳遞給下位機(jī)，再通過下位機(jī)控制閥門進(jìn)行關(guān)閥操作，電動執(zhí)行器可以執(zhí)行角度關(guān)閥（調(diào)節(jié)型），也可以直接進(jìn)行開關(guān)關(guān)閥（開關(guān)型）兩種方式?？刂菩盘柾ㄟ^物聯(lián)網(wǎng)的方式進(jìn)行傳送成為當(dāng)今自動化、網(wǎng)絡(luò)化領(lǐng)域的一種主流方式。通過網(wǎng)絡(luò)底層傳輸路徑，將信號傳至現(xiàn)場，完達(dá)到實(shí)時(shí)性和性的效果。（2）安全執(zhí)行扭力，開關(guān)方便快捷。可以根據(jù)閥門大小，通過不同規(guī)格的齒輪箱進(jìn)行開關(guān)調(diào)速，用較小的力可以推動較大的閥門閥芯，通過設(shè)置了電子行程開關(guān)作為電子限位，同時(shí)設(shè)置了機(jī)械方式的限位，安全保護(hù)超行程現(xiàn)象的發(fā)生。（3）安全電器保護(hù)。感溫探頭預(yù)埋入執(zhí)行器內(nèi)部機(jī)構(gòu)，作為測量執(zhí)行器電機(jī)堵轉(zhuǎn)的過熱保護(hù)；開過載和關(guān)過載報(bào)警，通過內(nèi)部有一定扭矩的機(jī)械結(jié)構(gòu)開關(guān)，通過電信號傳至電控板，將開過載和關(guān)過載做限位保護(hù)功能。
Relative to manual operation of valve, electric actuator valve has the following advantages and disadvantages.
Advantages: (1) efficient execution and precise control angle. The control signal of the upper computer can be passed to the lower machine through the network, and the valve is controlled through the lower machine to carry out the valve operation. The electric actuator can perform the accurate angle valve (adjustable type), and can also direct the switch off valve (switch type) two kinds of formula. The transmission of control signals through the Internet of things has become a mainstream way in the field of automation and networking. Through the bottom transmission path of the network, the signal can be transmitted to the scene, so that it can achieve real-time and accuracy effect. (2) the safety execution torque, the switch is convenient and quick. According to the size of the valve, the switch speed regulation can be carried out through the gear box of different specifications, the larger valve spool can be promoted with small force, the electronic travel switch is set as the electronic limit, and the limit of the mechanical way is set up, and the safety protection of the super stroke phenomenon is born. (3) protection of safety electrical appliances. The sensor is pre embedded into the internal mechanism of the actuator as the overheating protection for the motor plugging of the actuator; overloading and closing the overload alarm, through a mechanical switch with a certain torque inside, passes through the electrical signal to the electronic control board, and will open the overload and the off overload as the limit protection function.
缺點(diǎn)：（1）安裝環(huán)境必須良好。普通型電動執(zhí)行器安裝現(xiàn)場需做防潮防濕處理。特殊場合還需做防爆處理?，F(xiàn)場環(huán)境建議干燥，無易燃物，有一定的通風(fēng)防潮能力。（2）電子配件屬于易耗品。電子元件老化后，精度易受影響，特別是調(diào)節(jié)型產(chǎn)品；電子配件含程序軟件價(jià)格相對昂貴，故障率在運(yùn)維不到位時(shí)發(fā)生頻次較高。維護(hù)成本較高。（3）機(jī)械結(jié)構(gòu)比較復(fù)雜，安裝調(diào)試?yán)щy，非專業(yè)人士組裝維修困難。一個(gè)電動執(zhí)行器內(nèi)部包含復(fù)雜的機(jī)械結(jié)構(gòu)，關(guān)鍵處組合電子配件的使用，涉及兩個(gè)行業(yè)的標(biāo)準(zhǔn)，所以非專業(yè)人員維護(hù)是一件比較困難的事情。
Shortcomings: (1) the installation environment must be good. The common electric actuator should be moisture-proof and moistureproof. Special occasions also need to do explosion-proof treatment. The site environment is dry and flammable. It has certain ventilation and moisture resistance. (2) electronic accessories belong to consumable goods. After the aging of electronic components, the precision is easy to be affected, especially the regulated products; the price of the program software of electronic parts is relatively expensive, and the frequency of failure is higher when the operation and maintenance is not in place. The maintenance cost is high. (3) the mechanical structure is complex, and the installation and commissioning is difficult. An electric actuator contains complex mechanical structures, the key part of the electronic components is used, and it involves the standards of two industries, so it is a difficult thing to maintain non professional personnel.

總結(jié)
Summary
作為一個(gè)執(zhí)行的終端，可能有很多故障率的發(fā)生，但是可以因?yàn)檫\(yùn)維到位以及安裝環(huán)境的合理規(guī)范，這種電控產(chǎn)品的穩(wěn)定性還是可以被保證的，可以成為環(huán)保的智能化、自動化基礎(chǔ)的重要的組成部分。
As an execution terminal, there may be a lot of failure rates, but the stability of this electronic control product can be guaranteed because of the operation and maintenance and the reasonable installation environment. It can be the most important part of the intelligent and automatic environmental protection.