由于系統(tǒng)涉及多個用能區(qū)域，一方面，各區(qū)域設(shè)備具有相對獨(dú)立的自動化要求;另一方面，由于生產(chǎn)用能又相互聯(lián)系，同時余熱設(shè)備具有熱水加熱an全保護(hù)特性，因此各區(qū)域電控柜之間的連鎖關(guān)系比較復(fù)雜，但完善的自動控制，是an全生產(chǎn)的寶障。

Due to the involvement of multiple energy consuming areas in the system, on the one hand, the equipment in each area has relatively independent automation requirements; On the other hand, due to the interconnected energy consumption in production and the full protection feature of hot water heating in waste heat equipment, the interlocking relationship between the electrical control cabinets in each area is relatively complex. However, a complete automatic control is a treasure trove for the entire production process.

系統(tǒng)控制要注意如下要點(diǎn)：

The system control should pay attention to the following points:

1、基本狀態(tài)。RTO原始狀態(tài)，煙氣管氣動閥位置：煙氣不經(jīng)余熱換熱器;水路原始狀態(tài)，三通調(diào)節(jié)閥位置：水經(jīng)過余熱換熱器。水路系統(tǒng)，調(diào)試時水路閥門初始設(shè)定水流量原則：排除煙溫過低報(bào)警(水量過大)和水溫過高報(bào)警(水量過小)的狀況，選取相對合適的水量。

1. Basic state. RTO original state, position of pneumatic valve in flue gas pipe: flue gas does not pass through waste heat exchanger; The original state of the waterway, the position of the three-way regulating valve: the water passes through the waste heat exchanger. When debugging the waterway system, the initial set water flow principle of the waterway valve is to eliminate the situations of low smoke temperature alarm (excessive water volume) and high water temperature alarm (insufficient water volume), and select a relatively appropriate water volume.

2、開機(jī)、關(guān)機(jī)信號。RTO接到鍋爐房水泵開動信號，流量開關(guān)(進(jìn)水管路)有水流信號，煙氣管路氣動閥切換，煙氣經(jīng)過余熱換熱器。RTO接到鍋爐房水泵停止信號(水泵待機(jī))，煙氣管路氣動閥切換，煙氣不經(jīng)過余熱換熱器;鍋爐房接到煙氣氣動閥切換到位信號后，30min后，水泵停機(jī)。

2. Power on/off signal. RTO receives the signal to start the water pump in the boiler room, the flow switch (inlet pipeline) has a water flow signal, the pneumatic valve in the flue gas pipeline switches, and the flue gas passes through the waste heat exchanger. RTO receives a stop signal from the boiler room water pump (water pump standby), the pneumatic valve of the flue gas pipeline switches, and the flue gas does not pass through the waste heat exchanger; After receiving the signal to switch the flue gas pneumatic valve in place in the boiler room, the water pump stopped 30 minutes later.

3、煙溫過低(<120℃)報(bào)警信號。出余熱換熱器后，排煙管路上設(shè)一個溫度探頭。當(dāng)煙溫低于120℃時，給鍋爐房提供低溫報(bào)警信號，調(diào)節(jié)水路三通調(diào)節(jié)閥，減小經(jīng)過余熱換熱器的水量。

3. Alarm signal for low smoke temperature (<120 ℃). After the waste heat exchanger is removed, a temperature probe is installed on the exhaust pipe. When the smoke temperature is below 120 ℃, provide a low temperature alarm signal to the boiler room, adjust the three-way regulating valve of the water circuit, and reduce the amount of water passing through the waste heat exchanger.

4、設(shè)備故障信號。故障信號主要包括：水泵故障、煙氣管路氣動閥故障、水路三通調(diào)節(jié)閥故障等，還有一些其他故障。車間壓縮空氣停止，余熱回收系統(tǒng)的換熱閥及旁通閥均會關(guān)閉，此時會影響RTO系統(tǒng)的運(yùn)行，需要確認(rèn)RTO系統(tǒng)的狀態(tài)。

4. Equipment malfunction signal. The fault signals mainly include: water pump fault, pneumatic valve fault in the flue gas pipeline, water three-way regulating valve fault, and some other faults. The compressed air in the workshop will stop, and the heat exchange valve and bypass valve of the waste heat recovery system will be closed, which will affect the operation of the RTO system. It is necessary to confirm the status of the RTO system.

柜內(nèi)總線掉站、PLC當(dāng)機(jī)及柜母線跳閘時，可能會導(dǎo)致RTO余熱回收閥門狀態(tài)信號瞬時丟失，影響RTO系統(tǒng)運(yùn)行，此時需要人員到RTO系統(tǒng)進(jìn)行狀態(tài)確認(rèn)。

When the bus in the cabinet drops, the PLC crashes, or the cabinet bus trips, it may cause the instantaneous loss of the status signal of the RTO waste heat recovery valve, affecting the operation of the RTO system. At this time, personnel need to go to the RTO system to confirm the status.

5、水溫過高(>95℃)報(bào)警信號。出余熱換熱器后，水管上設(shè)一個溫度探頭。當(dāng)水溫高于95℃時，給RTO提供水溫高溫報(bào)警信號，RTO煙氣管路氣動閥切換，煙氣不再經(jīng)過余熱換熱器。

5. Alarm signal for high water temperature (>95 ℃). After the waste heat exchanger is removed, a temperature probe is installed on the water pipe. When the water temperature exceeds 95 ℃, provide a high temperature alarm signal to the RTO, switch the pneumatic valve of the RTO flue gas pipeline, and the flue gas no longer passes through the waste heat exchanger.

6、煙氣管路自動閥切換要求。自動風(fēng)閥切換，要求按序執(zhí)行。為避免自動風(fēng)閥的故障，引起烘房熄火，在切換自動風(fēng)閥時，需要求打開的風(fēng)閥打開后，才可關(guān)閉需關(guān)閉的風(fēng)閥。

6. Requirements for automatic valve switching in flue gas pipelines. Automatic air valve switching requires sequential execution. To avoid the malfunction of the automatic air valve, which may cause the drying room to stall, when switching the automatic air valve, it is necessary to open the air valve that needs to be opened before closing the air valve that needs to be closed.