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Liquid resistance speed control cabinet

Liquid resistance speed control cabinet

液体电阻调速柜是一种用于大型电机系统的调速设备,通过液体电阻调节电机电流,实现平稳启动、调速及制动控制。该设备结构可靠、性能稳定,可有效降低启动冲击电流,延长电机及机械设备寿命,广泛应用于矿山、冶金、电力及大型机械传动系统。

柜体采用高品质耐腐蚀材料和优化散热设计,内置液体电阻调节系统与保护装置,操作简便、安全可靠。可实现多级调速、平滑启动和减速制动,提高生产设备运行效率,降低能耗和设备磨损。

  • 液体电阻调速,实现平稳启动与精确控制

  • 减少启动电流冲击,延长电机寿命

  • 多级调速,运行平稳可靠

  • 安全保护完善,操作简便

  • 适用于矿山、冶金、电力及大型机械系统

广泛应用于:矿山磨煤机、冶金轧机、电力传动系统及各类大型工业设备调速场景。

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液体电阻调速柜:高效平稳的电机调速解决方案

在工业电机控制领域,液体电阻调速柜以其独特的技术优势和可靠的性能,成为大中型绕线式异步电动机调速与软起动的理想选择。

液体电阻调速柜(又称液体电阻starter cabinet或水阻柜)是一种采用电解质水溶液作为导电介质的调速设备。它通过改变串入电动机转子回路中的液体电阻阻值,实现对大、中型绕线式异步电动机的软起动与调速控制Widely used in建材、冶金、矿山、石油、化工等工业部门

液体电阻调速柜
Liquid resistance speed control cabinet

一、工作原理与技术特点

1. 智能工作原理

液体电阻调速柜基于电解质水溶液导电原理工作。通过改变两电极在电解质水溶液里的距离,或者调整电解质溶液浓度,来改变两电极间的电阻值

对于风机、泵类负载,装置根据P∝n³的关系(P为输出轴功率,n为转速),通过改变串在电动机转子上的液体电阻阻值来改变电动机的转速,从而达到调速、节能的目的。对于冶金行业轧机用电动机,通过改变液体电阻的阻值,能有效抑制电动机在扎制开始瞬间的浪涌电流,起到保护电动机的目的

2. 卓越技术特点

  • 平滑无级调速:通过改变溶液浓度或在范围内无级调整阻值,使主电机可平滑起动
  • 大热容量设计:液体电阻有很大的热容量,可连续起动5~10次
  • 低起动电流:起动电流与额定电流之比能达到≤1.3的满意效果,起动电流小:Iq≤1.3Ie(A)
  • 低压起动能力:电网电压低于电机额定电压的10%时,可顺利起动
  • 坚固耐用结构:电阻箱采用耐高温材料,可以承受160℃高温不变形,使用寿命可达20年以上

二、核心结构与组件设计

液体电阻调速柜主要由液体变阻器、板式高效热交换器及电控系统组成

1. 柜体结构

柜体框架由型材焊接而成,内外表面均采用喷塑处理,具有较强的耐湿热性、耐腐蚀性。防护等级可达IP20或IP30,也可根据需求定制更高防护等级。柜体设计合理、牢固、美观,并具有良好的密封防尘性能

2. 导电极板

导电极板(包括动极板和静极板)采用紫铜板表面镀稀有金属技术,具有不氧化、不腐蚀、免维护的特点,达到了长期可靠使用的目的。极板间通过绝缘装置绝缘,确保设备安全运行

3. 液体电阻系统

液体电阻箱采用高分子聚四氟乙烯等耐高温塑料板焊接制作。箱内装有由碳酸钠水溶液组成的电解液,具有良好的导电性和热容量。每一个水箱底部都固定有静极板,静极板引出接线柱采用高压热缩绝缘套管,保证了极间的可靠绝缘

4. 电器控制系统

电器控制部分集中置于柜体内的电控单元箱内,实现控制、多项保护、运行状况显示及操作和执行功能。可选择配置人机界面系统,实现远距离监控与操作,具备人机对话功能,操作简单,可靠性高

三、性能特点与优势

1. 高效节能性能

液体电阻调速柜在风机、泵类负载应用中,运行节电率可达10~30%。通过平滑起动和调速控制,能显著降低能源消耗,提高设备运行效率。

2. 优异的起动性能

  • 起动平稳:对设备无机械应力冲击,可延长机械设备及电机的寿命
  • 起动电流小:起动电流小于电机额定电流的1.3倍
  • 高起动成功率:不受电网电压波动和负载变动的影响,确保一次起动成功

3. 可靠保护功能

装置具有起动超时、超压、超行程、超温等多重保护功能,确保设备在各种工况下的安全运行。对电网无谐波污染,功率因素高,轧机类负载COS¢可提高0.18~0.22(与串电抗器相比)

IV. Application areas and scenarios

液体电阻调速柜广泛应用于以下领域:

1. Heavy industry

  • 建材行业:水泥厂球磨机、破碎机、风机等设备
  • Metallurgical industry:轧机、压缩机、风机等设备
  • Mining industry:提升机、破碎机、输送机等重型设备

2. 能源与基础设施工业

  • petrochemicals:各类泵、压缩机等设备
  • Power industry:锅炉给水泵、送风机、引风机等辅助设备

3. 适用电机范围

液体电阻调速柜适用于额定电压380V-10kV、功率从75kW至10000kW的各行业绕线式异步电动机的重载平滑软起动,特别适用于大惯性负载重载起动场合

五、技术参数与规格

主要技术参数

parameter category技术规格
适用电压380V-10kV
功率范围75-10000kW
起动电流≤1.3倍额定电流
调速比风机、泵类负载约为2:1
节电率风机、泵类负载约为10~30%
电液工作温度5~60℃
protection classIP20,IP30
environmental temperature-40℃~+50℃

六、选型与安装指南

1. 选型注意事项

在选择液体电阻调速柜时,用户需提供以下技术资料

  • 主电机的主要参数:额定功率、定子电压/电流、转子电压/电流
  • 负载特性:负载类型(风机、泵类、轧机等)、惯量大小
  • 使用环境条件:环境温度、湿度、海拔等
  • 特殊功能需求:是否需要远程监控、自动控制等功能

2. 安装环境要求

为保证液体电阻调速柜的正常运行,安装环境应满足

  • environmental temperature:-40℃~+50℃
  • 空气相对湿度不超过90%
  • 海拔高度不超过2000m(海拔2000m以上的可根据具体工况特殊设计)
  • 地面倾斜度不大于5°
  • 安装地点无火灾、爆炸危险、化学腐蚀及剧烈运动

七、维护与故障处理

液体电阻调速柜的维护工作相对简单,主要关注以下几个方面:

1. 定期检查与维护

  • 电解液检查:定期检查液位和电解液浓度,确保在正常范围内
  • 极板检查:检查极板是否有腐蚀或积垢,必要时进行清洁
  • 绝缘检测:定期检测绝缘电阻,确保设备安全运行

2. 常见故障处理

  • 电阻值异常:可能是电解液浓度不当或极板位置不正确
  • 温度过高:检查冷却系统是否正常工作,环境温度是否过高
  • 起动性能下降:检查电解液是否需要更换或调整

液体电阻调速柜凭借其平滑的起动特性Reliable operational performance显著的节能效果,已成为大中型绕线式异步电动机控制的理想选择。其结构简单、维护方便的特点,使其在建材、冶金、矿山、石油、化工等工业部门得到了广泛应用

随着工业技术的不断发展,液体电阻调速柜将继续在工业节能与自动化控制领域发挥重要作用,为用户创造更大的经济效益。

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Simo motorsAfter-sales service policy: quality-oriented, the user first!

Sincere, intimate, and devoted, Sigma will always be attentive.

preamble

Thank you for choosing Sigma Motor products. As an enterprise with many years of experience in motor manufacturing, Sigma Motor always insists on “Quality oriented, customer first”For the purpose, through the perfect service system, to ensure that every customer can enjoy efficient and professional after-sales service.

Our products have been awarded the honorary titles of “High Quality Products”, “China Famous Brand Products”, “National Inspection-free Products” and “China Well-known Trademark” for many times by provinces, cities and ministries. Famous Trademark" honorary title. In order to further enhance customer experience, we have formulated this after-sales service policy, aiming to provide customers with comprehensive, fast and satisfactory service guarantee.

I. Quality Assurance Commitments

Sigma Motor implements comprehensive quality control in strict accordance with international standards, national standards, machinery industry standards and enterprise standards:

  1. All products are listed in the “GB/T 19001-2008/ISO 9001:2008 quality management system”Production is carried out under effective operation to ensure that raw materials are strictly and perfectly inspected from the time they enter the factory to the time the products leave the factory.

  2. Commitment that all products offered areNew and unusedand meets the quality requirements specified in the user's contract.

  3. Adhere to the quality management system in accordance with “GB/T 19001-2000 idt ISO 9001:2000 standard”, and keep the quality management system running effectively.

Second, pre-sale service content

To help customers make the best choice, Sigma Motors offers comprehensive pre-sales support:

  • Specialized technical consulting: Receive inquiries from customers about the business and technical aspects of motors, and answer all kinds of questions from customers.

  • Personalized Solutions: Objectively introduce the performance and characteristics of Sigma's motor products and provide customized power solutions according to customer needs.

  • Comprehensive product information: Provide detailed quotations, drawings and motor samples and other information to help customers fully understand the characteristics of the product.

III. Ordering instructions

To ensure that the motor meets your needs, please specify the following parameters when ordering:

  • Basic parameters: Motor model, rated power, rated voltage, number of poles, rated frequency

  • installation environment: Protection class, cooling method, mounting method, rotation direction, environmental conditions, outlet location

  • Conditions of use: Altitude and working temperature of the installation site, type of load of the motor

if anyspecial requirementIf you have any questions about our products, please feel free to contact us, we need to sign another technical agreement before signing the order contract. You can also directly call our customer service hotline:15902923228 Access to professional guidance.

IV. Warranty Policy Details

1. Warranty period

Sigma Motors offersNot more than two years from date of shipmentThe warranty service. Within this specified time period, if the motor is damaged or fails to function properly due to poor manufacturing quality, Sigma Motors willRepairing or replacing parts or motors at no cost to the user

2. Warranty coverage

  • Warranty covers product quality problems caused by our company, the company will replace the relevant parts or provide free repair.

  • Warranty services need to be based onProper use and normal maintenanceThe machine should be used correctly in accordance with the original operating manual and maintained, lubricated and cleaned in accordance with the original manufacturer's recommendations.

3. Non-warranty coverage

The following are not covered by the warranty:

  • Non-designated maintenance staffDamage caused

  • Unauthorized modifications or self-disassembly

  • utilizationUnofficial spare parts or software

  • Failure to comply with operating manualsPrescribed guidelines for use, handling and maintenance

  • natural disaster(Damage to products caused by wind, fire, flood, earthquake, etc.

  • Natural wear and tear under normal use

V. Post-warranty services

After the expiration of the warranty period, Sigma motors provide continuous service support:

  1. Reimbursable services for life: After the expiration of the warranty period, if the product malfunctions, our company implements lifelong paid service, the required wearing parts and spare parts toCost price supply

  2. (pay a) regular return visit: After-sales service staffFrom time to time, we will make return visits to the usersUnderstand the status of product usage and resolve potential issues in a timely manner.

  3. Professional Repair ServiceThe company undertakes the repair of all kinds of motors, regardless of whether they are under warranty or not, and can provide professional overhaul and maintenance services.

VI. Service commitments and standards

Sigma Motors is committed to “Sincerity, thoughtfulness, devotion, Sigma will always be attentive.”The “Three Hearts” service concept ensures customer experience through standardized service processes:

  1. Professional Services Team: The company has set up a specialized service team to provide installation guidance, troubleshooting and maintenance services to ensure the efficient operation of the products in the process of use.

  2. Rapid Response Mechanism: The after-sales service team will respond promptly to customer feedback and quickly develop solutions.

  3. Full track record: Detailed records are kept for all service sessions to ensure traceability of the service process and continuous improvement of service quality.

VII. User complaint channels

If you are not satisfied with the services provided by Sigma Motors, you are welcome to provide feedback through the following channels:

  • direct marketingComplaints from Service Department and Headquarters

  • Call the customer service line:15902923228

We will take every piece of feedback seriously and continue to improve the quality of our services.

concluding remarks

Sigma Motors will continue to provide customers withHigh quality products and professional after-sales serviceWe will solve your worries through a perfect service system. We firmly believe that only the success of the customer, the development of Sigma. Choosing Sigma motor is choosingQuality and Trust

Sigma motors--Service with heart, create the future together!

Simo motorsBrand advantage: excellent quality, leading the motor industry innovation and development

More than sixty years of professional precipitation, to create a benchmark brand in the motor industry

Brand heritage and strength

Sigma Motors (former)Xi'an Electric Machinery Factory) was founded in 1955, as China's motor industryleading enterprisesThe company is one of the leading manufacturers of electric motors in the world, with more than sixty years of experience and expertise in the manufacturing of electric motors. The company has now developed intoIntegration of R&D, manufacturing and sales of motor productsOur products are widely used in many important fields such as electric power, coal, petroleum, mining, metallurgy, railroad, transportation, chemical industry, agriculture, water conservancy, aviation and so on.

Sigma motors are recognized for theirDeep technical heritageContinuous spirit of innovationThe company has established an excellent brand image in the motor industry, and its products are exported to more than 40 countries and regions such as North America, Europe, the Middle East, Southeast Asia, Africa, Australia, etc., which are trusted and highly praised by users all over the world.

Core Technology Advantage

1. Leading research and development innovation capabilities

Sigma Electric always takes technological innovation as the core driving force of enterprise development:

  • Professional R&D Team: Has a team ofSenior engineers and technologistsThe R&D team, which is composed of a team of researchers, focuses on the cutting-edge research and application development of motor technology.

  • Continuous technical investment: invest an annual percentage of sales5%-7% As R&D funding to ensure continuous technological innovation and product upgrades

  • Patented Technology Achievements: Cumulative access toMore than a hundred national patentsA number of products have won national and provincial awards for scientific and technological progress.

  • Industry-University-Research Cooperation: Establishing strategic cooperative relationships with many well-known universities and scientific research institutions to jointly promote the development of motor technology.

2. Excellent product quality system

Sigma Motors has established a comprehensive quality assurance system to ensure that every motor meets the highest quality standards:

  • International Standard Certification: Fully adoptedISO9001 Quality Management System CertificationISO14001 Environmental Management System CertificationOHSAS18001 Occupational Health and Safety Management System Certification

  • Strict quality control: Implementation from raw material procurement to finished product shipment68 strict quality control proceduresEnsure zero defects in products

  • Advanced testing equipment: Equipped with international advancedMotor Performance Test SystemVibration AnalyzerNoise test equipmentetc., comprehensive testing of various performance indicators of the motor

  • Continuous Quality Improvement: Establish a perfect quality feedback mechanism, continuously optimize the production process, and improve product quality and stability.

Product Advantage Characteristics

1. Energy efficient technologies

Sigma Motors actively responds to the national energy-saving and emission reduction policy and launches a series of energy-efficient products:

  • High Efficiency Motor Series: To meet the nationalGB18613-2020 standardEnergy efficiency rating, some products reachIE4, IE5 ultra-high efficiency level

  • Application of energy-saving technologies: AdoptionHigh Quality Silicon Steel SheetLow loss bearingsHigh efficiency cooling systemetc., significantly reducing operational energy consumption

  • Intelligent control technology: Supporting the advancedFrequency control systemThe optimal control of the motor operating state is realized, and the energy-saving effect is improved 15%-30%

2. Excellent performance

Sigma Motor products are characterized byHigh reliability, long service life, low maintenance costsAnd famous:

  • Powerful power output: Optimized electromagnetic design solutions to ensure that the motorHigh starting torque and high overload capacity

  • Low vibration and low noise: AdoptionDynamic balancing processnoise reduction technologyThe vibration and noise values are better than the national standards.

  • Highly adaptable to the environmentProduct design takes into account all kinds of severe working conditions, withResistant to high temperature, humidity and corrosionand other properties

  • Long life design: The key components are made of special treatment and high quality materials, and are designed to last up to100,000 hoursthat amount or more

3. Complete product range

Sigma Motors offers a comprehensive range of products to meet the needs of different customers:

  • High voltage motorsrange: Voltage level coverage6kV, 10kVMultiple ratings, power range200-10000kW

  • Low Voltage Motor Series:: IncludesYX3, YE3, YE4and other series, power range0.55-1000kW

  • Explosion-proof motorsrange: ByNational explosion-proof certificationFor use in flammable and explosive hazardous areas

  • Specialized motor series: Developed for specific industry needsSpecialized for coal mine, metallurgy, and shipsSpecialty motors

  • Non-standard customization capability: Strong customization and development capability, according to the customer's needsPersonalized Solutions

Service System Advantage

Sigma Motor has established a comprehensive customer service system:

  • pre-sales technical support: Provide professional selection guidance, program design and product demonstration

  • Intimate service during the sale: Strict contractual performance, ensuring on-time delivery and providing installation guidance

  • Comprehensive after-sales protection24 months warranty7×24 hours technical support48-hour on-site servicepromise

  • Lifetime maintenance support: Establish customer equipment files and provide full life-cycle service support

Industry Application Advantages

Sigma motors have accumulated a wealth of application experience in a number of key industries:

  • Power industry: Provide supporting motors for thermal power, hydropower and nuclear power, with stable and reliable operation.

  • coal industry: Explosion-proof motor products passed the coal mine safety certification, safety recognized by the industry

  • petrochemicalsCorrosion-resistant, explosion-proof special motors to adapt to the harsh working conditions and ensure safe production.

  • Metallurgical industry: High overload capacity, high temperature resistant motors to meet the special needs of metallurgical equipment

  • Transportation: Specialized motor solutions for railroads, rail transit, ports, etc.

Brand Honors and Certifications

Sigma motors have won many honors for their excellent product quality and good market performance:

  • China Famous Brand ProductsNational Inspection-free ProductsChina Famous Trademarks

  • High-tech enterprisesProvincial Enterprise Technology Center

  • A number of products won the provincial and ministerial-level scientific and technological progress awards

  • Contract and Trustworthy EnterpriseQuality and reputation AAA grade enterprise

concluding remarks

Choosing Sigma motors is choosingReliable quality assuranceLeading Technical StrengthComplete service supportSigma Motors is a leading manufacturer of electric motors in China. With more than sixty years of professional accumulation, Sigma motors have a profound technical background and rich industry experience, and are able to provide customers in various industries with the best quality motor products and perfect power solutions.

In the future, Sigma Motor will continue to uphold the "Quality-oriented, innovation-driven, customer first"business philosophy, and constantly improve the level of product technology and quality level, to create greater value for customers, and make greater contributions to the development of China's motor industry.

Sigma motors - strong power, excellent energy efficiency and perfect service!

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