Hermetic为客户-炼油厂的新柴油脱硫装置提供了一台流量为1000 m³/h的屏蔽泵；柴油在脱硫过程中存在着很高的系统压力和温度；要求所用的泵设备具有最高的安全性和可靠性。Hermetic无泄漏屏蔽泵，通过精确的测量和精密的控制，以及严格的测试和检查，提供了高可用性泵的解决方案；海密梯克Hermetic拥有在大型工业油气厂面对复杂挑战的专业知识和经验，同时，大连海密梯克泵业有限公司的泵技术专家还会时刻为制造厂和服务办事处提供现场支持。
HERMETIC-Pumpen GmbH supplied a canned motor pump with a flow rate of 1,000 m³/h and a delivery head of 65 m for a new diesel fuel desulphurisation plant of a Chinese refinery. The high system pressures and temperatures prevailing during the desulphurisation process require the highest safety and reliability of the equipment used. The hermetically sealed HERMETIC pump, extensive measuring and control equipment as well as rigorous tests and inspections not only guarantee the plant operator a safe pump solution with high availability. The decisive factor to the refinery was HERMETIC’s expertise and experience with the complex challenges of large industrial oil and gas plants. In addition, the pump specialist with a joint venture provides on-site support to manufacturing plants and service offices in China.
随着日益严格的全球污染物减排法律法规的颁布，在中国，柴油的含硫量被限制在10ppm。为了满足这些要求，炼油厂必须依靠现代的技术。柴油脱硫工艺包括一个加氢的工艺，该工艺要求系统压力超过100bar，温度超过400°C。由于即使是最小的泄漏也可能导致致命火灾，因此工厂和部件需要具有最高水平的可靠性和安全性，多家有柴油脱硫需求的企业依赖并信任Hermetic的技术和质量。
Under the increasingly stringent global regulations on the reduction of pollutant emissions, China also has a limit of 10 ppm for the sulphur content in diesel fuels. To comply with the requirements, refineries are required to invest in technological modernisation. The diesel desulphurisation process includes a hydrogenation process that requires system pressures of more than 100 bar and temperatures of more than 400°C. Since even the smallest leaks can cause fatal fires, plants and components require the highest level of reliability and safety. In the case of the reactor circulation pump requiring a delivery rate of 1,000 m³/h and a delivery head of 65 m, a well-known refiner in China relies on the expertise and quality of HERMETIC.
石油天然气工业无泄漏泵解决方案
整个10吨重系统的核心是一台Hermetic-CNKFH+D300-500屏蔽泵。完全符合API 685标准，泵电机的轴功率为185kw。所有承压部件均由锻造金属材料制成。外壳由高强度不锈钢316-Ti不锈钢制成，并在310 bar的压力下进行了测试。系统压力为112 bar，工作温度为405℃，一体式紧凑型装置的额定压力为130 bar。除转子外，电机外壳还用作二次承压设计，为提供无泄漏、安全的泵解决方案打下了基础。
Leakage-free pump solution for the oil and gas industry
The core of the 10-ton pump system is a CNKfH+D 300-500 canned motor pump. The water-cooled motor of the pump according to API 685 has a shaft power of 185 kW. All pressure containing parts were made of forged solid materials. The housing is made of highly resistant SS 316 Ti stainless steel and has been tested at 310 bar. With a system pressure of 112 bar and an operating temperature of 405 degrees Celsius, the integrated, compact unit is designed for a nominal pressure of 130 bar. In addition to the rotor lining, the motor housing serves as a secondary containment, which provides a leak-free, safe pump solution.
低磨损、低维护的设计原则
Hermetic屏蔽泵无轴密封，无联轴器和滚动轴承的设计，大大减少了用户维护和维修的成本，并能确保更长的使用寿命。Hermetic的“ZART”(零轴向和径向推力)技术原理，确保转子单元的无接触和无磨损运行。旋转和静态套筒轴承组件之间的精细流体膜允许转子完全“浮动”。为了监测轴向推力平衡，该泵采用了密封的“MAP”技术。转子位置监测检测转子运中最轻微的运动，作为一种早期预警系统，能防止不期望的操作环境和花费造成的巨大损坏。由于这种液压动力平衡，屏蔽泵没有径向和轴向磨损，从而保证了屏蔽泵明显更长的使用寿命。
Low-wear and low-maintenance design principle
The design-related omission of wear-prone components such as shaft seals, couplings and bearings reduces the maintenance and repair costs and ensures a longer service life. The “ZART” (Zero Axial and Radial Thrust) technological part from HERMETIC ensures a contact- and wear-free running of the rotor unit. It is based on comprehensive axial thrust balancing in conjunction with hydrodynamic sleeve bearings. While relief mechanisms in the control unit continuously monitor the axial position of the pump shaft, a fine fluid film between the rotating and static sleeve bearing component allows a full “floating” of the rotor. For the monitoring of the the axial thrust balancing, the pump is equipped with the HERMETIC “MAP” technology. The rotor position monitoring detects the slightest plays in the rotor movement and serves as a kind of early warning system to prevent undesired operating conditions and expensive damage. Due to this hydraulic power balance, the HERMETIC pump operates without radial and axial wear, thus offering plant operators significantly longer service life.
整个系统集成了测量和控制设备
为确保高可用性和耐用性，Hermetic屏蔽泵配备了额外的测量和控制设备。为了防止潜在的电机和轴承损坏，该特定液体循环过程避免了电动机侧的气体积聚，气体可以从泵输送的送介质中逸出。这其中应用了精确定制的计量泵在转子空间中产生精细，均匀的逆流，从而防止这种情况发生。系统监控中集成的液位指示器，指示电路中是否没有气体。为防止电机过热，安装了电机绕组的温度监控。另一个传感器监控电机冷却回路的温度，确保冷却性能和功能安全。其他组件还包括，如安全阀；还有严格的测试和检查程序，包括X射线测试，振动测试和超声波测试以及全面的检测检验，这些测试和监控设备保证了高可靠性屏蔽泵系统的全球供货范围。HERMETIC泵在全球目前的15家大型炼油厂中都展示了其安全性和性能；
Entire system with integrated measuring and control equipment
To ensure high availability and durability, the canned motor pump was provided with additional measuring and control equipment. To prevent potential motor and bearing damage, this particular process avoids gas accumulations on the motor side, which can escape from the pumped medium. A dosing pump precisely tailored to the application generates a fine, uniform counterflow in the rotor space, which prevents this. A level indicator integrated in the system monitoring indicates whether there is no gas in the circuit. While a heat barrier prevents the heat transfer from the pump to the motor part, an external heat exchanger ensures the dissipation of motor heat loss. To prevent overheating, a temperature monitoring of the motor winding is integrated. Another sensor monitors the temperature of the motor cooling circuit, which ensures the cooling performance and the functional safety. Other components such as safety valves and an extensive, rigorous testing and inspection procedures including X-ray tests, vibration tests and ultrasonic tests as well as comprehensive documentation complete the scope of supply to a highly reliable system. HERMETIC pumps demonstrate their safety and performance in currently 15 large refineries worldwide.
