本文關(guān)鍵詞： 煤礦動力災(zāi)害多參數(shù)耦合測定裝置 控制系統(tǒng) 同步控制 雙閥并聯(lián)　出處：《吉林大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：煤礦動力災(zāi)害參數(shù)測試裝置是用于測量煤礦動力災(zāi)害發(fā)生時煤巖和瓦斯的項指標(biāo)參數(shù)，通過對各項數(shù)據(jù)的動態(tài)監(jiān)測、分析、對比和處理，可以對煤礦動力災(zāi)害事故的發(fā)生進行預(yù)警，從而能夠制定相應(yīng)的措施來避免事故的發(fā)生造成人員傷亡和減少財產(chǎn)損失�，F(xiàn)有的煤礦動力災(zāi)害參數(shù)測試裝置主要包括圍巖動力災(zāi)害測試裝置和煤與瓦斯突出測試裝置，兩種測試裝置相互獨立，所測得的指標(biāo)參數(shù)互不相關(guān)，不能同時測定圍巖應(yīng)力、瓦斯壓力和溫度等參數(shù)共同作用下對動力災(zāi)害的影響，不能揭示動力災(zāi)害發(fā)生的多因素耦合機理。 本課題的主要來源是與黑龍江科技大學(xué)合作項目“煤礦動力災(zāi)害多參數(shù)耦合測定裝置”，項目以實現(xiàn)對影響煤礦動力災(zāi)害產(chǎn)生的多種因素所對應(yīng)的參數(shù)進行測定為目的，研發(fā)設(shè)計了此種裝置。根據(jù)煤礦動力災(zāi)害預(yù)警技術(shù)的要求，裝置可以實現(xiàn)對煤礦井下動力災(zāi)害發(fā)生時環(huán)境的模擬，測定煤礦動力災(zāi)害發(fā)生時煤礦的圍巖應(yīng)力、瓦斯壓力和溫度指標(biāo)等參數(shù)。本課題主要論述了煤礦動力災(zāi)害多參數(shù)耦合測定裝置的工作原理、控制系統(tǒng)的設(shè)計、結(jié)構(gòu)實現(xiàn)和液壓控制系統(tǒng)中的關(guān)鍵技術(shù)的研究。 煤礦動力災(zāi)害多參數(shù)耦合測定裝置整機的功能是通過將巖石力學(xué)測試技術(shù)和煤和瓦斯突出測試技術(shù)相結(jié)合來實現(xiàn)的，，即采用兩組液壓缸對密閉箱體中煤礦試件在兩個方向上的壓縮來實現(xiàn)對試件的單軸和雙軸強度測試，采用加熱系統(tǒng)和氣動控制對裝置密閉箱體內(nèi)加熱和充氣來實現(xiàn)對煤礦井下溫度和瓦斯壓力的模擬。 煤礦動力災(zāi)害多參數(shù)耦合測定裝置包括控制系統(tǒng)和主機兩大部分。裝置的主機部分包括各種工作液壓缸和其它部件，控制系統(tǒng)又包括液壓氣動控制系統(tǒng)、電氣控制系統(tǒng)和加熱系統(tǒng)三部分。液壓氣動控制系統(tǒng)主要實現(xiàn)對煤礦試件參數(shù)的測定，為了提高工作液壓缸的同步運動精度和降低液壓控制系統(tǒng)的壓力，特別采用同步增壓缸來驅(qū)動工作液壓缸的工作。裝置的電氣控制系統(tǒng)由硬件部分和軟件部分組成，主要用于控制裝置主機和液壓氣動系統(tǒng)的運行動作，控制系統(tǒng)的軟件部分是特別根據(jù)裝置工作要求設(shè)計的測控軟件，主要用于對試驗參數(shù)的顯示、控制、分析和處理。加熱系統(tǒng)主要用于對主機密閉箱體內(nèi)進行加熱，實現(xiàn)煤礦試件在礦井內(nèi)溫度環(huán)境的真實模擬。 工作液壓缸同步運動的控制系統(tǒng)特采用比例電磁換向閥和溢流節(jié)流閥雙閥并聯(lián)控制。通過對兩種液壓閥的靜態(tài)、動態(tài)特性的分析，得出本控制系統(tǒng)在一定的條件下，比例電磁換向閥和溢流節(jié)流閥雙閥并聯(lián)的使用有利于提高液壓控制系統(tǒng)的平穩(wěn)性，從而提高工作液壓缸運動的穩(wěn)定性的結(jié)論。對雙閥并聯(lián)控制和比例電磁換向閥單獨控制的兩種工作情況進行了實驗驗證，得出雙閥并聯(lián)控制與比例電磁換向閥單獨控制相比系統(tǒng)的穩(wěn)定性更高的結(jié)論。
[Abstract]:The coal mine dynamic disaster parameter testing device is used to measure the coal rock and gas when the coal power disaster occurs, through the dynamic monitoring, analysis, contrast and treatment of the data. Can carry on the early warning to the coal mine power disaster accident. Therefore, relevant measures can be made to avoid casualties and reduce property losses caused by accidents. The existing testing equipment for dynamic disaster parameters of coal mine mainly includes the dynamic disaster testing device of surrounding rock and coal and gas outburst measurement. Test device. The two test devices are independent of each other and the parameters measured are not related to each other, and the influence of the parameters such as surrounding rock stress, gas pressure and temperature on the dynamic disaster can not be measured simultaneously. It is not possible to reveal the coupling mechanism of multiple factors in the occurrence of dynamic disasters. The main source of this subject is the project "Multi-parameter Coupling measuring device of Coal Mine dynamic disaster", which is a cooperative project with Heilongjiang University of Science and Technology. In order to realize the determination of the parameters corresponding to many factors that affect the dynamic disaster of coal mine, the project has developed and designed this device. According to the requirements of the early warning technology of coal mine power disaster. The device can simulate the environment of underground power disaster and measure the surrounding rock stress of coal mine. This paper mainly discusses the working principle and the design of control system of multi-parameter coupling measuring device for coal mine power disaster. Structure realization and the research of key technology in hydraulic control system. The function of multi-parameter coupling measuring device for coal mine dynamic disaster is realized by combining rock mechanics test technology with coal and gas outburst test technology. That is to say, two groups of hydraulic cylinders are used to compress the coal mine specimens in two directions to test the uniaxial and biaxial strength of the specimens. The heating system and pneumatic control are used to heat and inflate the airtight box of the device to simulate the temperature and gas pressure in coal mine. The multi-parameter coupling measuring device of coal mine power disaster includes two parts: the control system and the main engine. The main part of the device includes various working cylinders and other parts, and the control system includes the hydraulic pneumatic control system. The hydraulic pneumatic control system mainly realizes the measurement of the parameters of the coal mine specimen in order to improve the synchronous motion accuracy of the working hydraulic cylinder and reduce the pressure of the hydraulic control system. The electric control system of the device is composed of hardware part and software part, which is mainly used to control the operation of the main engine and hydraulic pneumatic system of the device. The software part of the control system is specially designed according to the working requirements of the device, which is mainly used to display and control the test parameters. Analysis and treatment. The heating system is mainly used to heat the airtight box of the main engine to realize the real simulation of the temperature environment of the coal mine specimen. The control system of the synchronous movement of the working hydraulic cylinder is controlled in parallel by the proportional electromagnetic directional valve and the relief throttle valve in parallel. The static and dynamic characteristics of the two hydraulic valves are analyzed. It is concluded that the parallel use of the proportional electromagnetic directional valve and the relief throttle valve in parallel is beneficial to the improvement of the stability of the hydraulic control system under certain conditions. In order to improve the stability of the working hydraulic cylinder motion, two kinds of working conditions are verified by experiments, namely, the parallel control of two valves and the separate control of proportional electromagnetic directional valve. It is concluded that the stability of the system is higher than that of the parallel control of the double valve and the control of the proportional electromagnetic directional valve alone.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD76

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