The utility model relates to the technical field of gas meters, in particular to a gas meter core anti-countercurrent double-cover structure, which comprises a gas outlet pipe and a double-cover anti-countercurrent device. The bottom of the gas outlet pipe is installed on the gas meter core, and the inner side of the bottom of the gas outlet pipe is equipped with a double-cover anti-countercurrent device. The double-cover anti-countercurrent device includes an anti-countercurrent sheet and a counter-current seat, and the counter-current seat is provided with a longitudinal through-flow device. The two anti-countercurrent sheets are installed on the left and right sides of the top of the anti-countercurrent seat respectively. The two anti-countercurrent sheets are axially connected with the anti-countercurrent seat. Compared with the existing technology, the utility model installs a double-cover anti-countercurrent device in the outlet pipe of the machine core, when the gas meter is properly installed, the gas pushes the anti-countercurrent sheet away and the air intake can be smoothly; if the reverse installation is caused by the installation error, the anti-countercurrent sheet is closed under the action of gravity when the reverse air intake occurs, and the gas can not enter the gas meter through the anti-countercurrent sheet, thus eliminating the installation. Gas loss caused by mistake.
【技术实现步骤摘要】
一种燃气表机芯防逆流双盖片结构
本技术涉及燃气表
,具体地说是一种燃气表机芯防逆流双盖片结构。
技术介绍
膜式燃气表在反向安装后,用户在用气过程中,计数器会出现反转现象,导致计数器计量的数值越来越小,内漏增大,给燃气公司造成巨大损失。行业常采用膜式燃气表采用单个盖片方式,因盖片平面度不良,无法保证密封性,无法解决在反向通气时内漏增大的问题。因此,需要设计一种燃气表机芯防逆流双盖片结构,以避免逆向进气,杜绝安装失误导致的损失。
技术实现思路
本技术的目的是克服现有技术的不足,提供了一种燃气表机芯防逆流双盖片结构,以避免逆向进气,杜绝安装失误导致的损失。为了达到上述目的,本技术是一种燃气表机芯防逆流双盖片结构,包括出气管、双盖防逆流装置,其特征在于:出气管的底部安装在燃气表机芯上,出气管的底部内侧安装有双盖防逆流装置,双盖防逆流装置包括防逆流片和防逆流座,防逆流座设有纵向贯穿的通孔,两个防逆流片分别安装在防逆流座顶部的左、右两侧,两个防逆流片与防逆流座之间采用轴连接。所述的防逆流片向上打开或覆盖在防逆流座的通孔上。所述的防逆流座嵌设在出气管的底部内侧。本技术同现有技 ...
【技术保护点】
1.一种燃气表机芯防逆流双盖片结构,包括出气管、双盖防逆流装置,其特征在于:出气管(1)的底部安装在燃气表机芯上,出气管(1)的底部内侧安装有双盖防逆流装置,双盖防逆流装置包括防逆流片(2)和防逆流座(3),防逆流座(3)设有纵向贯穿的通孔,两个防逆流片(2)分别安装在防逆流座(3)顶部的左、右两侧,两个防逆流片(2)与防逆流座(3)之间采用轴连接。
【技术特征摘要】
1.一种燃气表机芯防逆流双盖片结构,包括出气管、双盖防逆流装置,其特征在于:出气管(1)的底部安装在燃气表机芯上,出气管(1)的底部内侧安装有双盖防逆流装置,双盖防逆流装置包括防逆流片(2)和防逆流座(3),防逆流座(3)设有纵向贯穿的通孔,两个防逆流片(2)分别安装在防逆流座(3)顶部的左、右两...
【专利技术属性】
技术研发人员:张吉庆,乐小蓉,李诗华,任海军,徐荣华,谢杰,
申请(专利权)人:上海真兰仪表科技股份有限公司,
类型:新型
国别省市:上海,31
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