本文選題：燃氣調(diào)壓器 + 性能檢測　； 參考：《中國計量學(xué)院》2014年碩士論文

【摘要】：燃氣調(diào)壓器是城鎮(zhèn)燃氣輸配系統(tǒng)中的核心部件，其作用是將高壓燃氣調(diào)至所需壓力，供給用戶使用。燃氣調(diào)壓器供氣不穩(wěn)會引起燃燒不充分、中毒、火災(zāi)等事故，因此需要對其性能進行檢測，以保證其安全性和穩(wěn)定性。目前國內(nèi)燃氣調(diào)壓器性能檢測以氣密性為主，檢測裝置自動化程度低且檢測結(jié)果受人為影響大。因此設(shè)計并開發(fā)一套用于燃氣調(diào)壓器性能綜合檢測的裝置顯得尤為重要。本文的主要研究內(nèi)容為： （1）論文首先闡述了燃氣調(diào)壓器的工作原理及分類，并以國標(biāo)《城鎮(zhèn)燃氣調(diào)壓器》(CJ274-2008)和《城鎮(zhèn)燃氣切斷閥和放散閥》(CJ/T335-2010)為依據(jù)，分析了調(diào)壓器性能檢測方案和原理，其檢測內(nèi)容包括靜特性測試、關(guān)閉壓力測試、放散測試和切斷調(diào)整測試。 （2）根據(jù)國家標(biāo)準(zhǔn)、行業(yè)標(biāo)準(zhǔn)并結(jié)合企業(yè)技術(shù)要求，制定了燃氣調(diào)壓器檢測裝置的設(shè)計要求和性能指標(biāo)，并提出了整機設(shè)計方案，包括氣路系統(tǒng)、硬件系統(tǒng)和測試軟件三部分。硬件系統(tǒng)包括控制與顯示模塊、壓力控制與采集模塊、流量控制與采集模塊、以及條碼閱讀器、PC機和打印機等外接模塊。測試軟件包括PLC軟件設(shè)計、人機交互界面設(shè)計和PC機軟件設(shè)計三部分。 （3）本文采用“電機+球閥”的流量控制系統(tǒng)來實現(xiàn)流量的自動調(diào)節(jié)控制。針對流量調(diào)節(jié)的非線性和時變性，將傳統(tǒng)PID控制算法和模糊控制算法結(jié)合，提出模糊PID控制算法，使流量控制在滿足動態(tài)性能的同時，又具有較高的控制精度。通過大量實驗和分析得出，通過模糊PID控制算法，流量控制偏差在±0.6Nm3/h范圍內(nèi)，控制精度滿足設(shè)計要求。 （4）參照檢測行業(yè)標(biāo)準(zhǔn)，引入機器能力指數(shù)對燃氣調(diào)壓器性能檢測裝置進行了評定，，該裝置的機器能力指數(shù)Cm、Cmk均≥1.67，符合設(shè)計要求。
[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.

【學(xué)位授予單位】：中國計量學(xué)院
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU996

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