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.
相关行业
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电力
20世纪70年代中期，横河电机推出了EBS电气控制系统，并以此进入电力业务领域。自此以后，横河电机坚定不移地持续提升技术水平和业务能力，旨在为全球客户提供更优的服务和解决方案。
横河电机凭借着全球电力解决方案网络，在充满活力的全球电力市场中发挥着积极的作用。这使得横河电机内部能够进行更紧密的团队协作，将全球资源与行业知识库有机结合。横河电力的行业专家团队通力合作，为每位客户量身打造适合其复杂需求的解决方案。
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化工
化工厂存在连续生产与批次生产两种流程，两者对控制系统需求各异。连续工艺要求控制系统具备高稳定性与可靠性，避免因故障导致生产线停机；而批次工艺则强调灵活调整配方、工序等参数的能力。两类系统均需实现产品质量追溯管理，并支持非常规操作执行。横河电机凭借丰富的产品组合、资深系统工程师团队及全球销售服务网络，可为不同工艺流程提供定制化解决方案。
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食品和饮料
在横河电机，我们了解当今的食品和饮料公司在气候变化、消费者需求和竞争力增强方面面临着挑战。克服这些挑战需要创新的解决方案，需要关注生产、资产管理以及食品安全和质量等关键领域。
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制药
制药企业需要通过对生产数据的更有效利用与监控，提升灵活性与敏捷性，从而实现质量管理的实时优化。制药行业专家与横河电机携手，共同打造能够提供安全、可靠药品的智能制造解决方案。我们通过数字化转型与先进制造技术，满足监管要求、确保产品质量、加快上市速度，从而为患者提供稳定可靠的药品供应。
相关产品&解决方案
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YS1310
带报警的YS1310指示器是一款输入指示器，可以使用两个输入进行报警。可同时显示2个回路。两个输入均可以生成上限报警、下限报警、上上限报警和下下限报警，并且可以从总共6个接点输出任意报警的AND连接或OR连接。
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YS1350/YS1360
YS1350是一款手动设定装置，可以手动输出设置信号至控制器等设备。YS1360是一款手动设定装置，可以手动输出操作信号至操作终端。
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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。可以根据用户用途选择所需功能。
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YS1700
YS1700可编程指示调节器可以通过运行用户程序为各种应用进行定制，并通过横河电机的专有技术、用户友好性和可扩展性提高可靠性。
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压力变送器
使用横河电机的压力变送器，可以对过程压力进行准确且稳定的测量，支持安全、可靠和可盈利的工厂运营。
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氧化锆氧/湿度分析仪ZR22G、ZR802G
该氧浓度和湿度分析仪可在高温下使用，由ZR22G检测器和ZR802G转换器组成。ZR22G检测器配备寿命长且高度可靠的氧化锆传感器，ZR802G转换器配备数字通信和数据记录功能。
ZR22G 和 ZR802G无需采样设备即可直接连续测量。通过传感器劣化的自诊断（不使用校准气体）、现场更换加热器组件，易于维护并降低运营成本。 -
涡街流量计
横河电机自五十多年前发布工业涡街流量计以来，一直表现良好。几十年来，横河电机一直致力于涡流技术的研发；如今横河电机提供了各种各样的涡街流量计，包括定制设计。
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涡街流量计VY系列
涡街流量计 VY 系列是横河电机涡街流量计的最新机型，是数字式 YEWFLO 系列的后续产品。
VY 系列融合了新数字技术，并继承了横河电机独有的、源自 YEWFLO 系列的独特结构。 -
温度变送器
横河电机提供多种温度变送器系列产品，其中包括接线盒内嵌式、盘装式或现场安装式。
