招商

正西安亚星泵阀制造有限责任公司是一家民营高新技术企业,专业从事化肥、尿素、氯碱工业用高中压阀门及管件,拥有自主知识产权多项:1.尿素管线用高压截止阀ZL 98 2 32658.02.夹套无内漏保温截止阀ZL 2014 20169366.73.不停车更换玻璃板液位计ZL 2007 20032709.54.高压差放氨阀ZL 2006 20135881.95.高压截止节流阀ZL 2006 20135881.96.无堵卡高效止回阀ZL 2007 20032711.27.组合式高压止回阀ZL 002 26849.38.直线式升降高、中、低压截止阀ZL 01 240509.4以上专利产品,均处于国内领先水平,深受尿素生产企业的青睐。目前客户遍布山东、山西、河南、四川、重庆、云南、福建、黑龙江、内蒙古、辽宁和吉林等二十多个省市,由于业务范围不断扩大,企     

无外漏对夹双瓣止回阀

介绍了对夹双瓣止回阀的结构特点、工作原理和产品使用工况(该阀已获国家实用新型专利,专利号:ZL201320061509.8)。     

高压斜盘式止回阀

介绍了高压斜盘式止回阀的结构特点、工作原理及其材料选用。该产品已获国家实用新型专利(专利号:ZL201520337738.7)。     

超(超)临界电站用带旁路立式升降止回阀

介绍了带旁路立式升降止回阀的球形密封结构和主要技术参数,论述了阀门在不发生水击的情况下较快关闭的工作原理和结构特性,该阀门已获国家专利(专利号:ZL 2016 2 0456610.7)。     

轴流式止回阀在长输管线上的应用及国产化情况

分析了轴流式止回阀的工作原理,揭示了两种类型轴流式止回阀结构优劣点,提出了两种类型轴流式止回阀的应用范围。结合在输送过程中国外止回阀实际运行故障情况,通过分析提出环盘型轴流式止回阀结构存在的固有缺陷。通过分析国产轴流式止回阀在实际长输管线上的成功应用和提出国产化轴流式止回阀的阶段性成果,展示国产化轴流式止回阀取得的成绩。     

高排与抽汽止回阀设计

介绍了超(超)临界火电机组用高排止回阀与抽汽止回阀的工作原理及主要结构特点,分析了高排止回阀与抽汽止回阀结构设计的不同及解决方案,简述了阀门的型式试验验证及特性等。     

艇用止回阀抗冲击分析求解路线探讨

基于Ansys对艇用止回阀抗冲击要求进行分析,求解了止回阀冲击应力结果,并对其进行评定。获得了止回阀抗冲击分析的常用方法,缩短了研发周期。     

压缩机用双气阀式止回阀

介绍了一种专利止回阀——压缩机用双气阀式止回阀,与其他止回阀相比较,优点是更换方便,噪声低,使用寿命长。     

防水锤两阶段关闭止回阀的研究

本文分析了常用止回阀防水锤措施及存在问题,介绍了两阶段关闭止回阀结构及有关方程组。理论计算与实验证明,正常运行时两阶段止回阀比普通止回阀节能20～30%。     

梭式止回阀工作性能的研究与分析

以安装在输水管路上的梭式止回阀为主要研究对象,运用Fluent软件对梭式止回阀和旋启式止回阀的开启过程进行数值模拟,通过压降得出两种阀的流阻系数,与旋启式止回阀相比,梭式止回阀的流阻系数偏大,能量损失较多,并简要从流场和阀结构方面进行了分析;通过对梭式止回阀的速度矢量图,湍动能云图等的分析,找出其产生喷流噪声、涡流噪声和湍流噪声的原因和位置;并对梭式止回阀进行泄漏量试验,表明梭式止回阀的安全性和密封性均符合工作要求。     

水压柱塞泵噪声特性的试验研究

基于阀配流式轴向水压柱塞泵的结构原理,分析了其噪声产生的主要原因,并对不同的配流阀结构型式、主轴动平衡前后、不同转速以及不同排量水压泵的噪声特性进行了对比试验研究。试验结果表明:采用平板型配流阀的水压泵噪声低于蕈阀结构的噪声;主轴动平衡后水压泵的噪声有明显降低;增大排量、降低转速可以降低泵的噪声;配流阀通径对泵的噪声影响较大。研究结果为水压泵的降噪提供了试验依据。     

FAST液压促动器关键元件并行节能型加速寿命试验台的研制

根据加速寿命试验和并行节能技术原理,针对FAST液压促动器中故障致命度较大的元件提出并设计出一种能同时测试多个齿轮泵、溢流阀及单向阀样本的加速寿命试验台。与普通可靠性试验台相比,该试验台具有单次试验样本种类多、数量多、试验周期短及能耗低等优点。试验在多种应力等级下进行,以冲击载荷作为加速因子进行齿轮泵的冲击寿命试验及单向阀和溢流阀的加速启闭试验。文章详细介绍了试验台的总体设计方案及所采用的关键技术,该试验台的设计方法可为其他核心液压元件加速寿命试验台的设计提供参考。     

Fluid Pump Using a Bar-shaped Piezoelectric Transducer

There are two kinds of piezoelectric pumps:check valve pumps and valve-less pumps.Whether to use a check valve or not depends upon the application occasion.To achieve large backpressure for higher flow rates,the pump with check valve is desirable.However,adding check valves implies more complex structure and higher probability of valve blocking,etc.In order to solve the problem,effective driving and transport mechanics with compact construction and reliable service are being sought.In this paper,using the second-order longitudinal vibration mode of a bar-shaped piezoelectric vibrator for driving fluid,a piezoelectric pump is successfully made.The proposed piezoelectric pump consists of coaxial cylindrical shells and a bar-shaped piezoelectric vibrator,which has a disk part and a cone part.The lead zirconium titanate ceramic rings fixed in the vibrator are polarized along the thickness direction.When the second-order longitudinal vibration of the vibrator along its axis is excited,the disk part of the vibrator changes periodically the volume of the chamber and the cone part acts as a pin valve,driving the fluid from the inlet port to the outlet port.Finite elements analysis on the proposed pump model is carried out to verify its operation principle and design by the commercial FEM software ANSYS.Components of the piezoelectric pump were manufactured,assembled,and tested for flow rate and backpressure to validate the concepts of the proposed pump and confirm the simulation results of modal and harmonic analyses.The test results show that the performance of the proposed piezoelectric pump is about 910 mL/min in flow rate with a highest pressure level of 1.5 kPa under 400 V peak-to-peak voltage and 51.7 kHz operating frequency.It is confirmed that this bar-shaped piezoelectric transducer can be effectively applied in fluid transferring mechanism of pump through this research.     

轴流式止回阀的密封试验

分析了轴流式止回阀的结构与性能特点,介绍了轴流式止回阀的密封试验方法、试验系统的设计与建设,并结合输送流体工况对试验系统的效果进行了验证。     

除灰渣系统阀门的选型及应用

介绍了灰渣及除灰输送管线系统中各类铸石闸阀、铸石球阀、铸石止回阀及铸石节流阀的特点、参数、型号、使用和选用。     

Thermal performance of horizontal closed-loop oscillating heat-pipe with check valves

This research investigated the thermal performance of various horizontal closed-loop oscillating heat-pipe systems with check valves (HCLOHPs/CVs). Numerous test systems were constructed using copper capillary tubes with assorted inner diameters, evaporator lengths, and check valves. The test systems were evaluated under normal operating conditions using ethanol, R123, and distilled water as working fluids. The system’s evaporator sections were heated by hot water from a hot bath, and the heat was removed from the condenser sections by cold water from a cool bath. The adiabatic sections were well insulated with foam insulators. The heat-transfer performance of the various systems was evaluated in terms of the rate of heat transferred to the cold water at the condenser. The results showed that the heat-transfer performance of an HCLOHP/CV system could be improved by decreasing the evaporator length. The highest performance of all tested systems was obtained when the maximum number of system check valves was 2. The maximum heat flux occurred with a 2 mm inner diameter tube, and R123 was determined to be the most suitable working fluid.     

高压给水空排止回阀特性分析

在讨论宝钢N2 炼钢煤气冷却高压给水系统控制过程的基础上 ,通过空排止回阀系统动态特性试验研究 ,并根据企业节能技术改造实践和现场长期运行使用情况 ,分析了空排止回阀系统的开发应用前景及其社会经济效益     

空排止回阀旁路控制部分设计

介绍了空排止回阀的用途、结构特点及原理。并以公称压力20MPa，公称通径175mm的空排止回阀为例，简述了旁通节流部分的设计与计算。     

抽气止回阀的设计

阐述了抽气止回阀的工作原理及气缸的设计计算方法。     

艇用止回阀阻力系数求解探讨

叙述了艇用止回阀的阻力系数设计过程中待确定的要点,并基于COSMOSFlow Works对艇用止回阀的阻力系数进行模拟仿真求解,求解了止回阀内部压力特性的结果,给出了预计的确定阀门阻力系数的一般方法。