Essential Equipments for Industries
Boilers are used in a broad range of industries such as electric power, pharmaceuticals, chemicals, ceramics, pulp and paper, and food and beverage. Amid the rising energy costs, tightening environmental regulations, and increasing awareness of safety as of late, the needs for high efficiency operation, low emission operation, and safe and stable operation of boilers are growing.
Increasing Efficiency of Boilers
In order to ensure the air and fuel are combusted at an optimal ratio, the waste of fuel is eliminated, and the exhaust gas is cleaned, real-time monitoring of the oxygen concentration of combustion gases is required. Equipped with an oxygen sensor unit with a longer life span, the Zirconia Oxygen Analyzer ZR series are capable of measuring an oxygen concentration with high reliability.
Safe and Stable Operation
A single-loop controller can be used to properly distribute control functionality. Offering the advantages of flexibility of building distributed control systems, simple maintenance, compatibility with conventional systems, and the like, the YS1000 Series of Single-loop Controllers are ideal for safe and stable operation at low costs.
Monitoring the drum level and steam flow rate in accurate at any conditions
In order to ensure highly efficient and safely operated boilers, it is also indispensable to accurately monitor the drum level and steam flow rate. The EJA and EJX Series of Differential Pressure Transmitters are capable of measuring the drum level with high stability even in actual applications at high temperatures and high pressures.
Voretex Flowmeter VY Series Built-in Temperature Sensor Type is a simple and highly reliable features and allows simultaneous measurement of flow rate and temperature and caluculation of steam mass flow rate and energy flow rate with bulit-in steam table.
Why Buy Yokogawa?
Yokogawa offers a wide variety of sensors and controllers that are used to monitor and operate boilers, and contributes to increasing the efficiency and environmental performance of boilers, as well as ensuring their safe and stable operation. We want you to explore Yokogawa's sensors and controllers in order to increase the efficiency and environmental performance of your boilers, and ensure their safe and stable operation.
Drum Level Measurement
Overview and Problems
- Drum level measurement
- High stability measurement required under large static pressure change
Solution
- Field proven silicon resonant sensor guarantees long term stability
- EJA: ±0.1% of URL per 10 years
- EJX: ±0.1% of URL per 15 years
- Under all conditions (temperature, static and over pressures)
Benefits
- Long term high stability measurement is realized under actual plant conditions
Combustion Control
Overview and Problems
- Perform safe and stable control at low cost
- Lower levels of emission output
Solution
- Simple programming by Function Block wiring method
- Cascade primary direct control
- Stable level control when boiler is started - Cross limit control calculation
- Air and flow are calculated so that air flow always exceed fuel flow to prevent incomplete combustion and explosion - Feed forward control
- The main stream pressure and feed water level are controlled quickly in response to changes in the main stream flow
Benefits
- Reduced debugging time
- Improvement of the reliability of programs
- Safe and stable control at low cost
Steam Flow Measurement
Overview and Problems
- Flow measurement for utility steam
- Conventional orifice flowmeter requires complicated, high cost installation and is not accurate
* For more details, please refer to Why are Vortex Flowmeter VY Series Ideal Steam Flowmeters?
Solution
Steam Flow Management by Mass Flow Rate (Accuracy: ±2% of Reading)
- Volumetric flow rate measurement by flowmeter
- Temperature measurement by temperature sensor or temperature transmitter
- Mass flow rate calculation based on volumetric flow rate and temperature
The Vortex Flowmeter VY Series (Built-in Temperature Sensor Type) provides all of these functions in a single device.
Benefits
- Low installation and operational costs
- Safety operation to reduce leakage points
- Save energy by accurate measurement
Combustion Control
Overview and Problems
- O2 control for optimum combustion
- Short sensor life by clogging
Solution
- Long life sensor with molecular bonding and special coating
- Cell life prediction
Benefits
- Fuel cost reduction
- Preventive maintenance
- Protect the environment, CO2 reduction
Combustion Control
Overview and Problems
- O2 control for optimum combustion of large-sized combustion equipment
- High installation cost for multipoint measurement
Solution
- Maximum 8 detectors can be connected to one AV550G converter
- O2 measurement of multiple points, individual concentration and average values
Benefits
- Accurate control by multipoint measurement
- Installation cost reduction
Our Key Technologies
EJA/EJX Silicone Resonant Sensor
By micro-machining the resonators directly within the single crystal silicon material we are able to derive the maximum benefits from the elasticity of the single crystal silicon material while enhancing sensitivity and repeatability. The properties of the resonators remain constant over time. This makes DPharp the ideal pressure sensor for harsh industrial automation environments. DPharp delivers stability, repeatability and reliability that you can rely on.
The VY Series Key Technology
The VY Series inherits the proven original sensing structure and high reliability of the YEWFLO series. Its unique shedder bar design with dual flow sensors provides robust, long-term stable performance. Moreover, with Yokogawa’s proprietary SSP signal processing technology, it automatically removes vibration noise and extracts true vortex signals, ensuring accurate and stable flow measurement.
YS1000 Dual CPU
With dual-CPU construction, manual control capability and display continues even if an abnormality occurs on one of the CPUs. If controller self-diagnostics detects a control circuit failure, the controller can suspend analog/digital output, switch to manual mode and allow manual control by operator.
Zirconia Oxygen Analyzers
- Get a long service life and stable operation with a Zirconia sensor
- Sensor replacement is easy
- A molecular bonding method completes installation of platinum electrodes, and its inherent connection prevents separation of Input signal Frequency analysis (SSP function) platinum from the Zirconia element.
- A lead-less electrode design eliminates electrical disconnection.
- Special coating protects the platinum and prevents the sensors from deteriorating.
- No special tool is required for cell replacement.
相關業種
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電力
1970 年代中期，Yokogawa 隨著 EBS 電力控制系統的推出，正式投入電力產業。此後，Yokogawa 持續深化相關技術與能力的研發，致力於為全球客戶提供最佳的服務與解決方案。
為在瞬息萬變的全球電力市場中發揮更積極的角色，Yokogawa 建立並營運全球電力解決方案網絡，強化集團內部的協同合作，整合全球資源與產業專業。Yokogawa 的電力產業專家攜手合作，為每一位客戶量身打造最符合其高度專業需求的解決方案。
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化學工廠
化學工廠依賴連續生產與批次生產流程，兩者對控制系統的需求各不相同。連續流程需要具備高穩定性與可靠性的控制系統，以避免故障導致生產線停機；而批次流程則強調控制系統的彈性，能靈活調整配方、作業程序等。這兩種類型的系統都需能管理產品的可用品質歷史，並執行非常規操作。憑藉完整的產品組合、經驗豐富的系統工程師，以及全球銷售與服務網絡，Yokogawa 能為每一個工廠製程提供解決方案。
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食品 & 飲料
在食品製造業中，除了需要應對「食品安全」、「糧食安全」、「降低成本」這些傳統挑戰，還需要面對病菌和減少勞動力的挑戰。
橫河Yokogawa與客戶密切合作、共同應對挑戰、提出理想工廠的解決方案，幫助生產廠商創造更舒適的工作環境。 -
製藥
製藥公司必須透過更有效地運用與監控製造數據來提升靈活性與應變能力，以即時改善品質管理。製藥專家與 Yokogawa 合作，打造可提供安全可靠藥品的製造解決方案。我們運用數位轉型與先進製造技術，共同滿足法規要求、確保產品品質、縮短上市時間，並為病患提供穩定可靠的藥品供應。
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終端
今天，許多終端用戶不僅在石油，天然氣和石化行業，而且在LNG / LPG和散裝行業都面臨著共同的物流挑戰。這些挑戰包括縮短產品交付時間，提高裝載效率，適應製造過程的變化，提高安全性，提高管理效率，降低人工成本，整合數據系統，可視化操作，管理流量等。
幾十年來，橫河一直在提供解決方案以滿足客戶對終端自動化和管理的需求。
相關產品&解決方案
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VY系列渦流流量計
渦流流量計VY系列是橫河渦流流量計的最新型號，是digitalYEWFLO系列的後續產品。
VY系列結合了最新的數位技術，並承襲自YEWFLO系列的橫河獨特結構所構成。 -
YS1310
帶報警的YS1310指示器是一款輸入指示器，可以使用兩個輸入進行報警。可同時顯示2個回路。兩個輸入均可以生成上限報警、下限報警、上上限報警和下下限報警，並且可以從總共6個接點輸出任意報警的AND連接或OR連接。
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YS1350/YS1360
YS1350是一款手動設定裝定，可以手動輸出設定信號至控制器等設備。YS1360是一款手動設定裝定，可以手動輸出操作信號至操作終端。
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YS1500
YS1500指示控制器具有PID控制所需的基本控制功能。可以根據用戶用途選擇所需功能。
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YS1700
YS1700可編程指示調節器可以通製運行用戶程序為各種應用進行定制，並通製橫河電機的專有技術、用戶友好性和可擴展性提高可靠性。
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壓力傳送器
橫河電機壓力傳送器，可以對製程壓力進行準確且穩定的測量，支援安全、可靠和獲利的工廠營運。
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氧化鋯式氧氣濃度計 ZR22G、ZR802G
此高溫用氧氣濃度／濕度分析系統由 氧化鋯式氧氣濃度計 ZR22G、ZR802G 組成，其中 ZR22G 偵測器搭載長壽命且高可靠度的氧化鋯感測器，ZR802G 轉換器則具備數位通訊與資料記錄功能。
ZR22G 與 ZR802G 可在無需取樣裝定的情況下，直接且連續量測氧氣濃度與濕度。透過感測器劣化的自我診斷功能（無需使用校正氣體），以及可於現場更換加熱器組件，使維護作業更為簡便，並有效降低營運成本。 -
渦流流量計
自1968 年率先推出工業渦流流量計以來，橫河電機一直是渦流流量計的代名詞。從那時起，橫河電機一直處於渦流技術的技術尖端，到現在持續提供種類繁多的渦流流量計，包括定制設計。
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溫度傳送器
橫河電機提供圓頭型(head mount), 軌道型(panel mount)和現場安裝型(filed mount)設備，涵蓋各種不同的溫度應用。