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宏达煤矿空压机选型计算与设计
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<p style="text-align:center;text-indent:52pt;" class="MsoNormal" align="center"> <b><span style="font-family:楷体_GB2312;font-size:26pt;font-weight:bold;"><span>宏达煤矿空压机选型计算与设计</span></span></b><b><span style="font-family:楷体_GB2312;font-size:26pt;font-weight:bold;"></span></b> </p> <p style="text-align:center;text-indent:36pt;" class="MsoNormal" align="center"> <b><span style="font-family:楷体_GB2312;font-size:18pt;font-weight:bold;"><span>第一节</span> <span>空压机的选型计算</span></span></b><b><span style="font-family:楷体_GB2312;font-size:18pt;font-weight:bold;"></span></b> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;"><span>一、压缩机供气量</span></span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">A、按最大班下井人数计算风量,最大班下井人数60人,供气量依据《六大系统规范》中急救袋供气量每人不得少于0.3m</span><sup><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:super;">3</span></sup><span style="font-family:楷体_GB2312;font-size:16pt;">/min计算,总供气量:</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">Q=0.3×60=18m</span><sup><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:super;">3</span></sup><span style="font-family:楷体_GB2312;font-size:16pt;">/min</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">B、按风动工具计算:</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;"><span>该矿现在正在进行</span>600kt/a的改扩建工程设计,预计明年即可完成立项批复前期准备工作,为避免重复投资,井下每班同时使用的风动工具选为MFC-1094/2465单体锚杆钻机4台或PZ-5B型混凝土喷射机一台;</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <table style="width:495.75pt;border-collapse:collapse;" class="MsoTableGrid"> <tbody> <tr> <td valign="center" width="153"> <p style="text-align:center;" class="MsoNormal" align="center"> <span style="font-family:楷体_GB2312;font-size:16pt;">风动工具型号</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> </td> <td valign="center" width="86"> <p style="text-align:center;" class="MsoNormal" align="center"> <span style="font-family:楷体_GB2312;font-size:16pt;">工作台数</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> </td> <td valign="center" width="132"> <p style="text-align:center;" class="MsoNormal" align="center"> <span style="font-family:楷体_GB2312;font-size:16pt;">同时工作系数</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> </td> <td valign="center" width="142"> <p style="text-align:center;" class="MsoNormal" align="center"> <span style="font-family:楷体_GB2312;font-size:16pt;">每台耗气量</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-align:center;" class="MsoNormal" align="center"> <span style="font-family:楷体_GB2312;font-size:16pt;">(m</span><sup><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:super;">3</span></sup><span style="font-family:楷体_GB2312;font-size:16pt;">/min)</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> </td> <td valign="center" width="146"> <p style="text-align:center;" class="MsoNormal" align="center"> <span style="font-family:楷体_GB2312;font-size:16pt;">使用压力,MPa</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> </td> </tr> <tr> <td valign="center" width="153"> <p style="text-align:center;" class="MsoNormal" align="center"> <span style="font-family:楷体_GB2312;font-size:16pt;">MFC-1094/2465钻 机</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> </td> <td valign="center" width="86"> <p style="text-align:center;" class="MsoNormal" align="center"> <span style="font-family:楷体_GB2312;font-size:16pt;">3</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> </td> <td valign="center" width="132"> <p style="text-align:center;" class="MsoNormal" align="center"> <span style="font-family:楷体_GB2312;font-size:16pt;">0.9</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> </td> <td valign="center" width="142"> <p style="text-align:center;" class="MsoNormal" align="center"> <span style="font-family:楷体_GB2312;font-size:16pt;">3.1</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> </td> <td valign="center" width="146"> <p style="text-align:center;" class="MsoNormal" align="center"> <span style="font-family:楷体_GB2312;font-size:16pt;">0.5</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> </td> </tr> <tr> <td valign="center" width="153"> <p style="text-align:center;" class="MsoNormal" align="center"> <span style="font-family:楷体_GB2312;font-size:16pt;">PZ-5B喷射机</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> </td> <td valign="center" width="86"> <p style="text-align:center;" class="MsoNormal" align="center"> <span style="font-family:楷体_GB2312;font-size:16pt;">1</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> </td> <td valign="center" width="132"> <p style="text-align:center;" class="MsoNormal" align="center"> <span style="font-family:楷体_GB2312;font-size:16pt;">0.3</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> </td> <td valign="center" width="142"> <p style="text-align:center;" class="MsoNormal" align="center"> <span style="font-family:楷体_GB2312;font-size:16pt;">7~8 m</span><sup><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:super;">3</span></sup><span style="font-family:楷体_GB2312;font-size:16pt;">/min</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> </td> <td valign="center" width="146"> <p style="text-align:center;" class="MsoNormal" align="center"> <span style="font-family:楷体_GB2312;font-size:16pt;">0.2~0.4 MPa</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> </td> </tr> </tbody> </table> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">Q=a</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">1</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;">a</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">2</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;">Y∑n</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">i</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;">q</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">i</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;">K</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">i</span></sub><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;"></span></sub> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">=1.2×1.2×1.09×4×3.1×1</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">=19.5(m</span><sup><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:super;">3</span></sup><span style="font-family:楷体_GB2312;font-size:16pt;">/min)</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;"><span>式中</span>:a</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">1</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;">—沿管路全长的漏风系数;</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">a</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">2</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;">—风动工具磨损后耗气量增加的系数;</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">Y—海拔高度修正系数;</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">n</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">i</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;">—风动工具同时使用台数;</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">q</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">i</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;">—每台风动工具的耗气量,(单台MFC风动单体锚杆钻机:空气消耗量为3.1 m</span><sup><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:super;">3</span></sup><span style="font-family:楷体_GB2312;font-size:16pt;">/min,工作压力为0.4~0.7MPa;单台PZ-5B型混凝土喷射机:空气消耗量为7~8 m</span><sup><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:super;">3</span></sup><span style="font-family:楷体_GB2312;font-size:16pt;">/min,工作压力为0.2~0.4 MPa;锚杆钻机和混凝土喷射机两者不同时工作,取两者中较大值);</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">K</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">i</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;">—同型号风动工具的同时工作系数;</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;"><span>二、压缩机必须的出口压力</span></span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">A.根据压风自救装置系统,压机源压力为0.3~0.7MPa,设计取0.4MPa计算:</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">P=P</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">P</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;">+ΔP</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">i</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;">+0.1=0.4+0.04×3.2+0.1=0.63MP</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">a</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;"><span>式中</span>:P—压缩机必须的出口压力,MPa;</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;"><span> </span>P</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">P</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;">—压气源压力, MPa;</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">ΔP</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">i</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;">—最远一路管道各段损失之和,可按每km管长压力损失0.03~0.06 MPa计算,本设计取0.04MPa,最远一路管长取3200m.</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">0.1—考虑橡胶管、管子连接不良及旧管内粗糙度增加的压力损失,一般软管长度不超过15m。</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">B、按井下用风设备计算出口压力:</span><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <span style="font-family:楷体_GB2312;font-size:16pt;">P=P</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">P</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;">+ΔP</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">i</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;">+0.1=0.5+0.04×3.2+0.1=0.728MP</span><sub><span style="font-family:楷体_GB2312;font-size:16pt;vertical-align:sub;">a</span></sub><span style="font-family:楷体_GB2312;font-size:16pt;"></span> </p> <p style="text-indent:32pt;" class="MsoNormal"> <br /> </p>
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