《输气管道设计与管理》2020年春季学期在线作业（一）

adminhan

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">根据输气管道设计规范中规定水平管是指沿线最高与最低点高程差小于</span><st1:chmetcnv w:st="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="200" unitname="米"><span style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10.5pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">200</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">米</span></st1:chmetcnv><span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的输气管道。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如果管路中途集气，则集气点之前的流量上升，集气点之后的流量下降。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">从输气首站至管线的终点配气站，中间设有若干压气站，同时一般输气管上每<span lang="EN-US">100</span>～<span lang="EN-US">2000km</span>设有截断阀室。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">在输气管道上管内壁涂敷有机树脂涂层只起到减阻增输作用作用。</span>
A:错误
B:正确

与输油管相比，输气管的温降速度小于输油管的温降。
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Tahoma; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-weight: bold">在相同条件下，分子量小的</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Tahoma; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-weight: bold">气体</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Tahoma; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-weight: bold">分子的粘度越小。</span>
A:错误
B:正确

某站停运，全线流量下降，且停运站距首站越近，对流量的影响越大。
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">多压气站长距离输气管道中途泄漏时，泄漏点前的输量小于正常输量，进出站压力均高于正常进出站压力。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">管路部分堵塞，堵塞点之前的各进、出站压力均下降，堵塞点之后的各进、出站压力均上升，越靠近堵塞点，进出站压力的变化幅度越大。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold">早期天然气利用率极低，特别是油田气更低，绝大部分气体都放空烧掉，主要原因是由于当时没有先进的天然气存储措施。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">地下储气或液化储气适用于调节季节用气的不均衡，而用储气罐储气则适用于调节昼夜或几天内的用气不平衡问题。</span>
A:错误
B:正确

压气站进站压力在高压范围内波动时，对输气管输量影响较大，在低压范围内波动时，对输气管输量影响较小。
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在进行水平输气管的水力计算时，对于短距离大压降的输气管路可以忽略速度头部分。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">对于干线输气管道，如果管道直径增大一倍，则输气量增大到原来的六倍，</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">管长减少一倍，则输气量提高<span lang="EN-US">50%</span>。</span>
A:错误
B:正确

天然气水合物可以实现天然气的储存和运输。
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如果管路中有分气，则分气点之前的流量上升，分气点之后的流量下下降，越靠近分气点变化幅度越大。</span>
A:错误
B:正确

首站进站压力上升，其它各站进站压力下降，且下降幅度基本相同。
A:错误
B:正确

固体干燥剂吸附脱水常用的吸附剂有：硅胶、活性氧化铝、铝矾土、分子筛等。
A:错误
B:正确

输气管末段比中间站间管段长，可调节供气和利用气量的不平衡，相当于一个储气设备。
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">天然气的露点是指天然气被水蒸汽饱和，开始产生水滴时的最高温度。</span>
A:错误
B:正确