139彩票APP

活塞式压力计的原理和结构

文章来源:http://handanxww.com 发布时间:2018-05-09 浏览次数:207

1YUANLIHEJIEGOU

活塞式压力计是根据流体静力学平衡原理和帕斯卡定律,利用压力作用在活塞上的力与砍码的重力相平衡的原理设计而成的。由于在平衡被测压力的负荷时,采用标准珐码产生的重力,因此又被称为静重活塞式压力计。其结构如图3-8所示,主要由压力发生部分和测量部分组成。
1525945569878498
 

139彩票APP(1)YALIFASHENGBUFEN。YALIFASHENGBUFENZHUYAOZHISHOUYAOBENG.TONGGUOJIAYASHOULUNXUANZHUANSIGAN,TUIDONGGONGZUOHUOSAI(SHOUYAOBENGHUOSAI)JIYAGONGZUOYE,JIANGDAICEYALIJINGGONGZUOYECHUANJICELIANGHUOSAI。GONGZUOYEYIBANCAIYONGJIEJINGDEYOUHUOBIMAYOUDENG。

139彩票APP(2)CELIANGBUFEN。CEZHIHUOSAISHANGDUANDEGUMATUOPANSHANGFANGYOUHEZHONGGUMA,HUOSAICHARENHUOSAITONGNEI,XIADUANCHENGSHOUSHOUYAOBENGJIYAGONGZUOYESUOCHANSHENGDEYALIPODANGZUOYONGZAIHUOSAIXIADUANDEYOUYAYUHUOSAI、TUOPANJIFAMADEZHILIANGSUOCHANSHENGDEYALIXIANGPINGHENGSHI,HUOSAIJIUBEITUOQIBINGWENDINGZAIYIDINGWEIZHISHANG,ZHEISHIDESHIZHIWEI


 

SHIZHONGP—BEICEYALI,Pa ;

139彩票APPm1、m2HEm3HUOSAI、TUOPANHEGUIMADEZHILIANG,kg;

A—HUOSAICHENGSHOUYALIDEYOUXIAOMIANJI,m2 ;

139彩票APPg—HUOSAISHIYALIJISHIYONGDIDIANDEZHONGLIJIASUDU,m/S2

2WUCHAFENXI

AZHONGLIJIASUDUDEYINGXIANG

ZHONGLIJIASUDUYUSUOZAIDIDEHAIBA、WEIDUYOUGUAN,KEYONGXIASHIJISUAN


 

139彩票APPSHIZHONGr—DIQIUBANJING,ANr=6371 x 103mJISUAN;

H—YALIJISHIYONGDIDIANDEHAIBAGAODU,m;

—压力计使用地点的纬度。

BKONGQIFULIDEYINGXIANG

若考虑空气对砝码产生浮力的影响,则应在式(3-20)中引进空气浮力修正因子如下

 

SHIZHONGP1、P2—DANGDIKONGQIHEQUMADEMIDU,kg/m3

KEJIAN,RUOHULVEKONGQIFULIDEYINGXIANG,JIANGSHISUOCEYALIZHIPIANDA。

WENDUBIANHUADEYINGXIANG

139彩票APPDANGHUANJINGWENDUBUSHI20℃SHI,YINGZAISHI(3-20)ZHONGYINJINRUXIAWENDUXIUZHENGYINZI


 

139彩票APPSHIZHONGa1、a2--HUOSAIYUHUOSAIGANGCAILIAODEXIANPENGZHANGXISHU,℃-1

t--GONGZUOSHIDEHUANJINGWENDU,℃;

AO--20℃SHIHUOSAIDEYOUXIAOMIANJI,m2

B—YALIMEIBIANHUA9.80665 PaSHIHUOSAIYOUXIAOMIANJIDEBIANHUALV,Pa-1

139彩票APPDANGHUOSAIYUHUOSAIGANGCAILIAOXIANGTONGSHI


 

SHIZHONGE—HUOSAIYUHUOSAIGANGCAILIAODEDANXINGMOLIANG,Pa;

u—HUOSAIYUHUOSAIGANGCAILIAODEBOSONGBI;

139彩票APPr、R—HUOSAI、HUOSAIGANGBANJING,m

使用注意事项

(1)SHIYONGQIANYINGJIANCHAGEYOULUSHIFOUCHANGTONG,‘MIFENGCHUYINGJINGU,BUDECUNZAIDUSAIHUOLOUYOUXIANXIANG。

(2)HUOSAIJINRENHUOSAITONGZHONGDEBUFENYINGDENGYUHUOSAIQUANZHANGDE2/3-3/4

139彩票APP(3)HUOSAIYALIJIDEBIANHAOYAOHEZHUANYONGKANMABIANHAOYIZHI,YANJINDUOTAIYALIJIDEZHUANYONGZHUANMAHUHUAN。ZAIJIA

139彩票APPJIANZHUANMASHIYINGBIMIANHUOSAITUSHENGTUJIANG。ZHENGQUEDEZUOFASHIZAIJIAJIANFAMAZHIQIANYINGXIANGUANBITONGWANGHUOSAIDEFAMEN,DANGQUERENSUOJIAJIANFAMAWUWUHOU,ZAIDAKAIFAMEN。

139彩票APP(4)HUOSAIHEHUOSAITONGZHIJIANPEIHEJIANXIFEICHANGXIAO,YINERLIANGZHEZHIJIANYANZHOUXIANGMAOZHIDEYOUYESUOCHANSHENGDEJIANLIJIANGDUIJINGQUECELIANGYOUYINGXIANG。WEILEJIANXIAOZHEILEIPOMOCA,CEXINGSHIKEQINGQINGDIZHUANDONGHUOSAI。

139彩票APP(5)HUOSAIYINGCHUYUQIANZHIWEIZHI,JIHUOSAIYALIJIDIPANYINGLIYONGQISHANGDESHUIPAO,JIANGQIDIAOCHENGSHUIPING。

(6)DANGYONGZUOJIANDINGYALIYIBIAODEBIAOZHUNYIQISHI,YALIJIDEZONGHEWUCHAYINGBUDAYUBEIJIANYIBIAOJIBENWUCHAJUEDUIZHIDE1/3YALIJILIANGCHENGSHIYONGDEZUIJIAFANWEIYINGWEICEXINGSHANGXIANDE10%YI100%,DANGDIYU10%SHI,YINGGENGHUANYALIJI。

(7)校验或检定其他压力表139彩票APP时的操作步骤,应详见相关指导手册;当校验真空表时,操作步骤略有不同,应加以注意。


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