燃气调压器性能检测装置的研制

发布时间：2018-04-21 16:16

本文选题：燃气调压器 + 性能检测　；参考：《中国计量学院》2014年硕士论文

【摘要】：燃气调压器是城镇燃气输配系统中的核心部件，其作用是将高压燃气调至所需压力，供给用户使用。燃气调压器供气不稳会引起燃烧不充分、中毒、火灾等事故，因此需要对其性能进行检测，以保证其安全性和稳定性。目前国内燃气调压器性能检测以气密性为主，检测装置自动化程度低且检测结果受人为影响大。因此设计并开发一套用于燃气调压器性能综合检测的装置显得尤为重要。本文的主要研究内容为：（1）论文首先阐述了燃气调压器的工作原理及分类，并以国标《城镇燃气调压器》(CJ274-2008)和《城镇燃气切断阀和放散阀》(CJ/T335-2010)为依据，分析了调压器性能检测方案和原理，其检测内容包括静特性测试、关闭压力测试、放散测试和切断调整测试。（2）根据国家标准、行业标准并结合企业技术要求，制定了燃气调压器检测装置的设计要求和性能指标，并提出了整机设计方案，包括气路系统、硬件系统和测试软件三部分。硬件系统包括控制与显示模块、压力控制与采集模块、流量控制与采集模块、以及条码阅读器、PC机和打印机等外接模块。测试软件包括PLC软件设计、人机交互界面设计和PC机软件设计三部分。（3）本文采用“电机+球阀”的流量控制系统来实现流量的自动调节控制。针对流量调节的非线性和时变性，将传统PID控制算法和模糊控制算法结合，提出模糊PID控制算法，使流量控制在满足动态性能的同时，又具有较高的控制精度。通过大量实验和分析得出，通过模糊PID控制算法，流量控制偏差在±0.6Nm3/h范围内，控制精度满足设计要求。（4）参照检测行业标准，引入机器能力指数对燃气调压器性能检测装置进行了评定，，该装置的机器能力指数Cm、Cmk均≥1.67，符合设计要求。
[Abstract]:Gas regulator is the core component of gas transmission and distribution system in town. Its function is to adjust the pressure of high pressure gas to the required pressure and supply the user. The gas supply unsteadiness of the gas regulator will cause accidents such as insufficient combustion, poisoning, fire and so on. Therefore, it needs to test its performance to ensure its safety and stability. At present, the domestic gas regulator is used to ensure its safety and stability. It is particularly important to design and develop a set of device for comprehensive testing of gas regulator performance. The main contents of this paper are as follows:
(1) the paper first expounds the working principle and classification of gas regulator, and analyzes the performance testing scheme and principle of the voltage regulator based on the national standard < town gas voltage regulator > (CJ274-2008) and the town gas shutoff valve and the discharge valve (CJ/T335-2010). The testing contents include static characteristic test, closing pressure test, release test and cut off tone. The whole test.
(2) according to the national standard, the industry standard and the technical requirements of the enterprise, the design requirements and performance indexes of the gas regulator detection device are formulated, and the design scheme of the whole machine is put forward, including the air system, the hardware system and the test software. The hardware system includes the control and display module, the pressure control and the acquisition module, the flow control and the flow control. The acquisition module, as well as the bar code reader, the PC machine and the printer and other external modules. The test software includes the PLC software design, the human-computer interface design and the PC software design three parts.
(3) this paper adopts the flow control system of "motor + ball valve" to realize the automatic regulation and control of flow. According to the nonlinear and time-varying of flow regulation, the fuzzy PID control algorithm is put forward by combining the traditional PID control algorithm with the fuzzy control algorithm, so that the flow control is satisfied with the dynamic performance, and the control precision is higher. A large number of experiments and analysis show that the fuzzy PID control algorithm can control the flow control deviation within the range of + 0.6Nm3/h, and the control accuracy meets the design requirements.
(4) according to the testing industry standard, the machine capability index is introduced to evaluate the performance testing device of gas regulator. The machine capability index Cm and Cmk are equal to 1.67, which conforms to the design requirements.

【学位授予单位】：中国计量学院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU996

【参考文献】