The invention discloses a differential pressure type flowmeter, which comprises a connecting pipe, straight pipe, sensor, two sealing ring and two pressure pipe, two connecting pipes are connected by bolts into one, the other end of the connecting pipe is connected with the straight section, in the two connecting pipe is arranged on the end surface sealing ring and the orifice plate body is arranged in a sealing ring between the two hole plate, which is provided with a plurality of nozzles, one side of the packer ring is provided with connecting pipe communicated with the inner airway, airway pressure tube end and connected with the other end of the pipe, pressure sensor connected in sealing ring on the other side of the inner wall is provided with a connecting pipe connected inside the buffer tank, the nozzle comprises the fluid flow along the diameter decreasing narrow section, straight section along the direction of flow and diameter increasing expansion segments. The flange connection between the connecting pipe and the connecting pipe, between the connecting pipe and the straight pipe section is adopted, which greatly improves the practicability of the connecting pipe in the measurement process of different types of sensors, and is convenient for the staff to install and disassemble quickly.
【技术实现步骤摘要】
一种差压式流量计
本专利技术涉及流量测量领域,具体是指一种差压式流量计。
技术介绍
差压式流量计以其技术成熟、结构简单、稳定可靠、使用面宽的特点占据流量计使用前列。差压式流量计是根据安装于管道中流量检测件产生的差压、已知的流体条件和检测件与管道的几何尺寸来测量流量的仪表;但是,这种差压式流量计的测量量程范围较窄,因为,流量仪表信号(差压)呈平方函数关系,这样就限制了流量测量的量程范围。目前,喷嘴流量计最常用的喷嘴形式有标准喷嘴,长颈喷嘴,文丘里喷嘴等,这些节流形式普遍存在如下缺点:测量的重复性、精确度在流量计中一般水平,由于许多的因素影响错综复杂,精度难以提高;现场安装条件要求较高,需要较长的直管段,一般难以满足,压力损失比较大。
技术实现思路
本专利技术的目的在于提供一种差压式流量计,提高流体测量的范围,延长流量计的使用寿命。本专利技术的目的通过下述技术方案实现:一种差压式流量计,包括带法兰的连接管、直管段、传感器、两个封隔圈以及两个取压管,两个带法兰的所述连接管相邻的一端端部由螺栓连接成一体,连接管另一端通过法兰盘与直管段连接,在两个所述连接管相对设置的端面上分别 ...
【技术保护点】
一种差压式流量计,包括带法兰的连接管(1)、直管段(11)、传感器(10)、两个封隔圈(8)以及两个取压管(6),其特征在于:两个带法兰的所述连接管(1)相邻的一端端部由螺栓(2)连接成一体,连接管(1)另一端通过法兰盘(10)与直管段(11)连接,在两个所述连接管(1)相对设置的端面上分别设置有封隔圈(8),孔板板体(3)设置在两个封隔圈(8)之间,孔板板体(3)上开有多个喷嘴,且在封隔圈(8)一侧开有与连接管(1)内部连通的气道(4),取压管(6)一端与气道(4)连通,取压管(6)另一端与传感器(10)连通,在封隔圈(8)另一侧内壁上开有与连接管(1)内部连通的缓冲槽( ...
【技术特征摘要】
1.一种差压式流量计,包括带法兰的连接管(1)、直管段(11)、传感器(10)、两个封隔圈(8)以及两个取压管(6),其特征在于:两个带法兰的所述连接管(1)相邻的一端端部由螺栓(2)连接成一体,连接管(1)另一端通过法兰盘(10)与直管段(11)连接,在两个所述连接管(1)相对设置的端面上分别设置有封隔圈(8),孔板板体(3)设置在两个封隔圈(8)之间,孔板板体(3)上开有多个喷嘴,且在封隔圈(8)一侧开有与连接管(1)内部连通的气道(4),取压管(6)一端与气道(4)连通,取压管(6)另一端与传感器(10)连通,在封隔圈(8)另一侧内壁上开有与连接管(1)内部连通的缓冲槽(9),且两个缓冲槽(9)与两个气道(4)相对应且对称...
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