使用说明书 JLQ系列罗茨气体流量计 M A N U A L JLQ SERIES ROOTS GAS METER
天 津 市 第 五 机 床 厂
TIANJIN CHINA NO.5 MACHINE TOOL WORKS
津制00000161号
前 言
感谢您使用天津第五机床厂提供的罗茨气体流量计系列产品。
为保证您正确使用、安装和维护我厂的精密计量设备，使用前请务必仔细阅读此用户手册。 在未声明之前，本公司有权根据技术发展的需要，对本手册进行修改。
PREFACE
Thanking you for using series products of Roots Gas Meter offered by Tianjin China NO.5 Machine Tool Works.
To ensure your correct use, installation and maintenance of the sophisticated metering equipment, you must carefully read the user manual.
Before the statement, our company keep the right to modify this manual according to the development of technology.
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概 述
JLQ系列罗茨气体流量计，是计量流经管道中气体流量的容积式仪表。具有工作压力范围大、流量量程宽、精度高、体积小、重量轻、安装维修方便、使用可靠等特点，同时对流通介质的适应性强，可广泛应用于天然气、煤制气、惰性气体、空气等气体的流量计量，是国内外城市燃气、油田化工、科学研究等部门理想的流量计量装置。在企业的现代化管理、经济核算及节约能源等方面起着重要作用。流量计标准型主要由测量和积算两大部分组成，能就地指示累计流量，可根据需要配置温压补偿积算仪和各种接口关系，以满足用户不同的使用要求。
ABSTRACT
The JLQ series Roots Gas Meter of model A is a capacity type instrument to calculate the flow through the piping. It has many characteristics such as big range of
the pressure, broad span of rate, high accuracy, small volume，light weight, convenience of maintaining and use credibility. Meanwhile, it has a strong adaptability to current media and can be used in calculating natural gas, inert gases, air and so on. It is an ideal equipment for sections of city combustion gas, oil-field chemical engineering and scientific research in domestic and abroad. It plays an important role in modern management, the economy check, and energy economization. The standard pattern of flow meter includes measurement and accumulation, which can measure the accumulated flow rate. Moreover, it can equip warm press compensation integrating instrument and various kinds of interfaces according to demands in order to fulfill different needs.
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工作原理
JLQ系列罗茨气体流量计，主要由壳体、共轭转子和计数装置等部件构成。装于计量室内的一对共轭转子在流通气体的出入口压差
(P入>P出)作用下，两转子交替承受转动力矩。转子每转动一周，则输出四倍计量室有效容积的气体，转子的转数通过磁性密封联轴装置及减速机构，传递到积算指示计数器，从而显示输出气体的累计体积量。其计量过程和工作原理如图l所示(图中仅表示了四分之一周期)，流量计示值误差的调整工作，出厂前已完成，并达到了规定的要求，用户不必再自行调整，流量计转子滚珠轴承处，设置有特殊润滑装置。图2为流量计内部结构的示意图。
OPERATING PRINCIPLE
The JLQ series Roots Gas Meter of model A is composed with shell, conjugate rotors, and counter. When the conjugate rotors is under the pressure difference (Pressure of go into>pressure of go out) the rotors turn to circle and received the moment alternately. When the rotors circles one circuit, gas four times to the capacity of the metrology room is put out. The number of circle is delivered to the accumulated displayer through the magnetic hermetic rotary device and decelerating device, and then the accumulated output gas is shown. The process and the work principle is shown as Diagram 1.(the diagram is only 1/4 period). The error rectification of figure displaying has been finished before the roots gas meter is put into market, and it meets the standard, so no more adustment is needed. Lubricant device is intalled at the ball bearing of the rotors. The inner structure of the roots gas meter is shown as Diagram 2.
图1 工作原理图
Fig.1 operating principle
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2 内部结构示意图 Fig.2 structural sketch
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图