Article(id=1149739131896512926, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149739129056969102, articleNumber=1003-3033(2024)03-0200-06, orderNo=null, doi=10.16265/j.cnki.issn1003-3033.2024.03.1161, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1695139200000, receivedDateStr=2023-09-20, revisedDate=1703260800000, revisedDateStr=2023-12-23, acceptedDate=null, acceptedDateStr=null, onlineDate=1752048770164, onlineDateStr=2025-07-09, pubDate=1711555200000, pubDateStr=2024-03-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752048770164, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752048770164, creator=13701087609, updateTime=1752048770164, updator=13701087609, issue=Issue{id=1149739129056969102, tenantId=1146029695717560320, journalId=1146031787341344770, year='2024', volume='34', issue='3', pageStart='1', pageEnd='252', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1752048769486, creator=13701087609, updateTime=1756468931593, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1168278632783950282, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149739129056969102, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1168278632783950283, tenantId=1146029695717560320, journalId=1146031787341344770, issueId=1149739129056969102, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=200, endPage=205, ext={EN=ArticleExt(id=1149739132102033823, articleId=1149739131896512926, tenantId=1146029695717560320, journalId=1146031787341344770, language=EN, title=Jet trajectory model of fire water cannon based on Euler method, columnId=1149733270084042840, journalTitle=China Safety Science Journal, columnName=Public safety, runingTitle=null, highlight=null, articleAbstract=
In order to improve the accuracy of fire water cannon jet trajectory prediction and overcome the difficulty of traditional parabolic theory to describe the phenomenon that "when the initial velocity is constant,the range increases with the increase of jet flow",first of all,the Euler method was used to establish a one-dimensional mass conservation equation along the trajectory of the water jet in the air,axial momentum conservation equations and the radial momentum conservation equations. Then,assuming that the axial velocity distribution of the water column and air column was in the shape of "bowler hat",the established conservation equations were derived and analyzed,and the fire water cannon water jet trajectory calculation model was established. Finally,based on three conservation equations,the numerical computation process of the jet trajectory model was given and verified with the collected experimental data. The results show that the error of this model is less than 10%.
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为提高消防水炮射流轨迹预测精度,克服基于传统抛体理论描述“初速度不变,射流流量增加致使射程增加现象”所存在的困难,首先采用欧拉法,沿空气中水射流轨迹建立一维的质量守恒方程、轴向动量守恒方程和径向动量守恒方程;然后假设水柱和空气柱的轴向速度分布形状为“礼帽”形,并据此推导分析建立的守恒方程,进而建立消防水炮水射流轨迹计算模型;最后基于3个守恒方程,给出射流轨迹模型的数值计算流程,并与收集的试验数据进行比较验证,结果表明:所建模型的误差不超过10%。
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2018(7): 31-34., articleTitle=Calculating method for trajectory and extension of liquid jet in air based on jet-flow theory, refAbstract=null)], funds=[Fund(id=1168130198886166849, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739131896512926, awardId=2021XFZD01, language=CN, fundingSource=2021年度应急管理部消防救援局科技计划重点研发(2021XFZD01), fundOrder=null, country=null), Fund(id=1168130198961664323, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739131896512926, awardId=2022JM-281, language=CN, fundingSource=陕西省2022年自然科学基础研究计划(2022JM-281), fundOrder=null, country=null), Fund(id=1168130199116853574, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739131896512926, awardId=CXY-2020-032, language=CN, fundingSource=榆林市2020年科技计划(CXY-2020-032), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1168130194641531083, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739131896512926, xref=1, ext=[AuthorCompanyExt(id=1168130194649919692, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739131896512926, companyId=1168130194641531083, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Schematic diagram of bowler hat distribution, figureFileSmall=hXDQnRZh3qGjUoLMqrpZPA==, figureFileBig=0y1eOMl8lyxQQmuwBnEL0w==, tableContent=null), ArticleFig(id=1168130197774676252, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739131896512926, language=CN, label=图1, caption=
“礼帽”形分布, figureFileSmall=hXDQnRZh3qGjUoLMqrpZPA==, figureFileBig=0y1eOMl8lyxQQmuwBnEL0w==, tableContent=null), ArticleFig(id=1168130197904699682, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739131896512926, language=EN, label=Fig.2, caption=
Flow of jet trajectory calculation program, figureFileSmall=zHmGBk/SxefYJWueKOCe2A==, figureFileBig=EeoP98/d/P133Rtjf7c5qw==, tableContent=null), ArticleFig(id=1168130197967614246, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739131896512926, language=CN, label=图2, caption=
射流轨迹计算流程, figureFileSmall=zHmGBk/SxefYJWueKOCe2A==, figureFileBig=EeoP98/d/P133Rtjf7c5qw==, tableContent=null), ArticleFig(id=1168130198076666152, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739131896512926, language=EN, label=Fig.3, caption=
Comparison of large flow and high pressure jet trajectories, figureFileSmall=CKW+HmP8SrMqKBwekkq51Q==, figureFileBig=ZHTv3q4nef2Ly/MhkN2/2Q==, tableContent=null), ArticleFig(id=1168130198194106665, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739131896512926, language=CN, label=图3, caption=
大流量、高压射流轨迹对比, figureFileSmall=CKW+HmP8SrMqKBwekkq51Q==, figureFileBig=ZHTv3q4nef2Ly/MhkN2/2Q==, tableContent=null), ArticleFig(id=1168130198336713004, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739131896512926, language=EN, label=Tab.1, caption=
Specific parameters of various types of water guns and water cannons
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水枪(炮) 类型 | 出口流量/ (kg·s-1) | 离地高 度/m | 出口等效 直径/mm | 文献 来源 |
加装YST-4NN 型炮头 | 94.63 | 0.61 | 57.15 | [11] |
加装MST-4NJ 型炮头 | 75.08 | 0 | 50.8 |
Elkhart Brass(埃 尔克哈特黄铜)型 | 18.95 | 0.75 | 14.36 | [12] |
Akron Brass (阿密龙黄铜)型 | 18.95 | 0.75 | 14.71 |
| MLQD型水枪 | 1.895 | 0.75 | 5.68 |
| 新海龙艏喷 | 6 263.12 | 15.7 | 450 | [13] |
| PS(水炮)20型 | 27.50 | 0.75 | 25.33 | [8] |
| PS30型 | 41.20 | 0.75 | 31.25 |
| PS100型 | 116.20 | 0.75 | 52.48 |
| PS180型 | 191.50 | 0.75 | 67.36 |
| PS200型 | 212 | 0.75 | 70.89 |
), ArticleFig(id=1168130198437376302, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739131896512926, language=CN, label=表1, caption=
各类型水枪、水炮具体参数
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水枪(炮) 类型 | 出口流量/ (kg·s-1) | 离地高 度/m | 出口等效 直径/mm | 文献 来源 |
加装YST-4NN 型炮头 | 94.63 | 0.61 | 57.15 | [11] |
加装MST-4NJ 型炮头 | 75.08 | 0 | 50.8 |
Elkhart Brass(埃 尔克哈特黄铜)型 | 18.95 | 0.75 | 14.36 | [12] |
Akron Brass (阿密龙黄铜)型 | 18.95 | 0.75 | 14.71 |
| MLQD型水枪 | 1.895 | 0.75 | 5.68 |
| 新海龙艏喷 | 6 263.12 | 15.7 | 450 | [13] |
| PS(水炮)20型 | 27.50 | 0.75 | 25.33 | [8] |
| PS30型 | 41.20 | 0.75 | 31.25 |
| PS100型 | 116.20 | 0.75 | 52.48 |
| PS180型 | 191.50 | 0.75 | 67.36 |
| PS200型 | 212 | 0.75 | 70.89 |
), ArticleFig(id=1168130198529650993, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739131896512926, language=EN, label=Tab.2, caption=
Comparison between calculated range and shot height and actual situation
, figureFileSmall=null, figureFileBig=null, tableContent=
| 消防枪(炮)类型 | 仰角/(°) | 计算射程/m | 实际射程/m | 误差/% | 计算射高/m | 实际射高/m | 误差/% |
加装YST-4NN 型炮头 | 30 | 72.29 | 79.85 | 9.47 | 14.47 | 15.73 | 8.10 |
| 45 | 74.85 | 72.54 | 3.18 | 26.47 | 26.60 | 0.49 |
| 60 | 64.88 | 62.50 | 3.81 | 38.80 | 39.44 | 1.62 |
| 75 | 42.24 | 40.40 | 4.55 | 49.66 | 51.52 | 3.61 |
加装MST-4NJ 型炮头 | 30 | 68.10 | 72.80 | 6.46 | 13.48 | 15.51 | 13.09 |
| 45 | 70.34 | 68.20 | 3.14 | 24.98 | 27.01 | 7.52 |
| 60 | 60.98 | 56.20 | 8.51 | 36.81 | 37.42 | 1.63 |
| 75 | 40.00 | 38.30 | 4.44 | 47.37 | 45.88 | 3.25 |
| Elkhart Brass型 | 20 | 68.19 | 62.48 | 9.14 | — | — | — |
| Akron Brass型 | 20 | 67.13 | 61.26 | 9.58 | — | — | — |
| MLQD型水枪 | 20 | 27.46 | 27.28 | 0.66 | — | — | — |
| 新海龙艏喷 | 45 | 164.04 | 155.2 | 5.70 | 54.78 | 50.5 | 8.48 |
| PS20型 | 30 | 62.93 | 63.00 | 0.11 | — | — | — |
| PS30型 | 30 | 71.40 | 72.00 | 0.83 | — | — | — |
| PS100型 | 30 | 97.62 | 97.20 | 0.43 | — | — | — |
| PS180型 | 30 | 112.59 | 107.0 | 5.22 | — | — | — |
| PS200型 | 30 | 115.77 | 113.0 | 2.45 | — | — | — |
), ArticleFig(id=1168130198592565557, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739131896512926, language=CN, label=表2, caption=
计算射程、射高与实际对比
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| 消防枪(炮)类型 | 仰角/(°) | 计算射程/m | 实际射程/m | 误差/% | 计算射高/m | 实际射高/m | 误差/% |
加装YST-4NN 型炮头 | 30 | 72.29 | 79.85 | 9.47 | 14.47 | 15.73 | 8.10 |
| 45 | 74.85 | 72.54 | 3.18 | 26.47 | 26.60 | 0.49 |
| 60 | 64.88 | 62.50 | 3.81 | 38.80 | 39.44 | 1.62 |
| 75 | 42.24 | 40.40 | 4.55 | 49.66 | 51.52 | 3.61 |
加装MST-4NJ 型炮头 | 30 | 68.10 | 72.80 | 6.46 | 13.48 | 15.51 | 13.09 |
| 45 | 70.34 | 68.20 | 3.14 | 24.98 | 27.01 | 7.52 |
| 60 | 60.98 | 56.20 | 8.51 | 36.81 | 37.42 | 1.63 |
| 75 | 40.00 | 38.30 | 4.44 | 47.37 | 45.88 | 3.25 |
| Elkhart Brass型 | 20 | 68.19 | 62.48 | 9.14 | — | — | — |
| Akron Brass型 | 20 | 67.13 | 61.26 | 9.58 | — | — | — |
| MLQD型水枪 | 20 | 27.46 | 27.28 | 0.66 | — | — | — |
| 新海龙艏喷 | 45 | 164.04 | 155.2 | 5.70 | 54.78 | 50.5 | 8.48 |
| PS20型 | 30 | 62.93 | 63.00 | 0.11 | — | — | — |
| PS30型 | 30 | 71.40 | 72.00 | 0.83 | — | — | — |
| PS100型 | 30 | 97.62 | 97.20 | 0.43 | — | — | — |
| PS180型 | 30 | 112.59 | 107.0 | 5.22 | — | — | — |
| PS200型 | 30 | 115.77 | 113.0 | 2.45 | — | — | — |
), ArticleFig(id=1168130198663868728, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739131896512926, language=EN, label=Tab.3, caption=
Calculation parameters of ordinary fire cannon and high-pressure fire cannon
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| 消防炮名称 | 出口压力/ MPa | 质量流量/ (L·s-1) | 流速 系数 |
| 普通 | 0.7 | 30 | 0.95 |
| 高压喷雾 | 4.0 | 6 | 0.9 |
), ArticleFig(id=1168130198743560506, tenantId=1146029695717560320, journalId=1146031787341344770, articleId=1149739131896512926, language=CN, label=表3, caption=
普通消防炮和高压消防炮计算参数
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| 消防炮名称 | 出口压力/ MPa | 质量流量/ (L·s-1) | 流速 系数 |
| 普通 | 0.7 | 30 | 0.95 |
| 高压喷雾 | 4.0 | 6 | 0.9 |
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