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Home /Product /Flow meter series /Lumbar Wheel (Roots) Flowmeter

Lumbar Wheel (Roots) FlowmeterLumbarWheelRootsFlowmeter

Cast steel turbine flowmeter

ZW-LL series Cast steel turbine flowmeter Mainly used for large diameter gas flow measurement, all k…

Description：

、產(chǎn)品概述：">

、產(chǎn)品概述：">Productoverview:

ZW-LL series Cast steel turbine flowmeter 、液體

、蒸汽介質(zhì)流體的流量測(cè)量

。">Mainly used for large diameter gas flow measurement, all kinds of industrial liquid in the pipe and steam medium fluid. 、壓力

、溫度、粘度等參數(shù)的影響

，無(wú)可動(dòng)機(jī)械零件

，因此可靠性高,維護(hù)量小。">It is characteristic of small pressure loss, large measuring range, high accuracy, influence of the measuring condition of volume flow rate is almost not affected by fluid density, pressure, temperature, viscosity and other parameters, so no moving mechanical parts, high reliability, small amount of maintenance. 。">The instrument parameters can work stably for a long time.

，計(jì)量室內(nèi)有一對(duì)或兩對(duì)可以相切旋轉(zhuǎn)的腰輪。">The utility model is characterized in that a metering chamber in the meter casing, the metering chamber has a pair or two pairs of tangent waist wheel rotation. ，它們相互嚙合使兩個(gè)腰輪可以相互聯(lián)動(dòng)

。">In the outside of the casing and two meter coaxial search round a set of transmission gears meshing with each other, they make the two round the waist can be linked with each other.

。">ZW-LL series steel flowmeter in the structure, the outer legs and waist wheel flowmeter the inner wall of the shell surface can be composed of a certain volume of the "bucket" space. We called the measuring room". ，在流量計(jì)進(jìn)出口流體差壓的作用下.兩腰輪將按正方向旋轉(zhuǎn)。">When the fluid flow through the flow meter in timing, the import and export of differential fluid pressure under the action of two. According to the positive direction of rotation of the waist wheel. 。">The formation of a metering chamber enclosed by the waist wheel and the shell. 。">The fluid metering chamber filled with a single volume of imports from the waist wheel is divided into continuous fluid.

Two, work principle:

，在流量計(jì)的進(jìn)出口形成壓差

，腰輪在此壓差的推動(dòng)下旋轉(zhuǎn)。">ZW-LL series steel flowmeter is measured when the fluid flows through the metering chamber, in the import and export of the formation of differential pressure flowmeter, this pressure waist wheel driven by rotation. ，使兩個(gè)腰輪保持連續(xù)旋轉(zhuǎn)

。">At the same time through fixed at the waist on the axle of the driving gear, the two round of continuous rotation of the waist. 。">With the rotation of the waist wheel, the metering chamber is discharged continuously through the liquid flowmeter. ，通過(guò)密封聯(lián)軸器、減速機(jī)構(gòu)

，將旋轉(zhuǎn)次數(shù)減速后傳遞到計(jì)數(shù)器，計(jì)數(shù)器即指示液體瞬時(shí)流量和累積流量

。">The amount of each liquid flow through the metering chamber volume is four times, the sealing mechanism through the coupling, reducer, reducer rotating number is transferred to the counter, the counter is indicating liquid instantaneous flow and cumulative flow. 。">Install the transmitter in the counter mechanism that the sender of the waist belt. 、累積

、瞬時(shí)等功能）自動(dòng)化測(cè)量和控制。">With the display meter or computer system can realize remote (quantitative, cumulative and instantaneous automatic measurement and control function). 。">Use display instrument Classification Manual see.

、應(yīng)用計(jì)量：">Three, application of measurement:

，重油等高粘度液體的流量計(jì)量

；">ZW-LL, can be used for pure crude oil, heavy oil flow measurement of high viscosity liquid;

、重油等高粘度流體的流量計(jì)量；">ZW-LL-D can be used to prevent sand sand flow measurement of crude oil, heavy oil and other high viscosity fluid;

，具有較強(qiáng)的防腐性能

，可用于腐蝕性液體的流量計(jì)量，特別適用于化工行業(yè)

；">Contact type flowmeter and ZW-LL-F stainless steel medium stainless steel material manufacturing, has strong corrosion resistance, can be used for flow measurement of corrosive liquid, especially for the chemical industry;

，柴油等低粘度流體的流量計(jì)量。">ZW-LY-C light oil type is especially suitable for light oil, diesel oil flow measurement of low viscosity fluid.

、主要特點(diǎn)：">Four, main features:

、測(cè)量準(zhǔn)確度高，基本誤差一般可達(dá)正負(fù)0.2%到正負(fù)0.5%

，特殊要求時(shí)可達(dá)正負(fù)0.1%,流量計(jì)的特性一般不受流動(dòng)狀態(tài)的影響

，也不受雷諾數(shù)大小的限制。">1, high measurement accuracy, the basic error is generally up to plus or minus 0.2% to plus or minus 0.5%, special requirements up to plus or minus 0.1%, flow characteristics generally not affected by the flow state, nor by the Reynolds number size limit.

、可用于高粘度液體的流量測(cè)量">2, can be used for high viscosity liquid flow measurement

、測(cè)量范圍度較寬，典型的流量范圍度為5：1到10：1">3, a wide range of measurement, the typical flow range of 5:1 to 10:1

、字輪式計(jì)數(shù)器累積流體總量

，無(wú)需外部能源，使用方便面計(jì)數(shù)器累積流量雙顯示

，其中之一可以復(fù)零

，方便用戶在不連續(xù)計(jì)量的情況下使用。">4, the cumulative amount of fluid type wheel counter, without external energy, the use of instant noodles counter cumulative flow double display, one of which can be reset to zero, the convenience of users in the case of continuous measurement.

、計(jì)量部件之間無(wú)接觸

，不磨損，使用壽命長(zhǎng)

。">5, the measurement between components without contact, no wear, long service life.

、大口徑流量計(jì)采用又轉(zhuǎn)子形式，降低流量計(jì)運(yùn)轉(zhuǎn)噪聲和振動(dòng)

。">6, large caliber flowmeter and the rotor, reduce running noise and vibration meter.

、技術(shù)參數(shù)：">Five, technical parameters:

、±0.2%

、±0.5%；">1, allow the basic error: + 0.1%, + 0.2%, + 0.5%;

、公稱通徑DN（mm）：15～300

；">2, the nominal diameter of DN (mm): 15~300;

、不銹鋼（P） 1 .0

、1.6

、2.5、4.0

、6.3

；鑄鋼（E）2.5、4.0

、 6.3

、9.6；">3, nominal pressure PN (M.Pa): cast iron, stainless steel (A) (P) 1, 1.6, 2.5, 4, 6.3; 2.5, 4 cast steel (E), 6.3, 9.6;

、被測(cè)液體溫度：">4, the measured liquid temperature:

；">A. low temperature: -40 ~ +60 c;

B. at room temperature -10 to +80 DEG c;

；">The temperature of C. -10 to +200 DEG c;

；">D. high temperature -10 to +300 DEG c;

；">5, the measured liquid viscosity (mPa.s): 0.3 ~ 50000;

、管道連接：GB/T9118-2000（zg****標(biāo)準(zhǔn)法蘭）；NIST（美國(guó)標(biāo)準(zhǔn)法蘭）

；BSPT（英國(guó)標(biāo)準(zhǔn)管螺紋）：NPT（美國(guó)推拔管螺紋）

；">6, pipe connection: GB/T9118-2000 (Chinese; NIST (American Standard) standard); BSPT (BSP): NPT (American pipe thread);

；9999,999.9 L（瞬時(shí)流量）

；">7, on-site display: 99999999 L (cumulative flow) of 9999999.9 L (single flow); 9999999.9 L (transient flow);

、4～20mA

、1-5V、4～20mA +HART協(xié)議

、MODBUS支持RS232

、RS485通訊（任選）；">8, output signals: pulse signal, 4 ~ 20mA, 4 ~ 1-5V, 20mA +HART, MODBUS RS232, RS485 protocol support communication (Ren Xuan);

、防爆等級(jí)：EXiaIIBT5EXiaIICT5防護(hù)等級(jí)：IP65

。">9, explosion-proof grade: EXiaIIBT5EXiaIICT5 protection grade: IP65.

Six, installation and use:

、流量計(jì)前應(yīng)安裝過(guò)濾器，兩者表體上箭頭指向與流動(dòng)方向一致

。">1, flow meter should be installed before the filter, the meter with the direction of arrow.

、當(dāng)被測(cè)液體含有氣體時(shí)，流量計(jì)前應(yīng)安裝氣體分離器

。">2, when the measured liquid containing gas, flow meter should be installed before the gas separator.

、不論管路是垂直還是水平安裝

，但流量計(jì)的腰輪軸安裝成水平位置（即表度盤應(yīng)與地面垂直）。">3, whether the pipeline is vertical or horizontal installation, but the waist wheel flowmeter installation into a horizontal position (i.e. dial should be perpendicular to the ground).

、流量計(jì)在正確安裝情況下

，如果不易看清讀數(shù)，可把計(jì)數(shù)器旋轉(zhuǎn)180度或90度均可

。">4, the correct installation of flowmeter in the case, if it is not easy to see the readings, the counter rotating 180 degrees or 90 degrees can be.

、節(jié)流閥應(yīng)安裝在流量計(jì)進(jìn)口處，開(kāi)閉閥裝在出口處

，使用開(kāi)閉閥時(shí)要緩慢啟動(dòng)

，不要突然開(kāi)閥。">5, the throttle valve should be installed in the meter inlet opening and closing valve is installed at the outlet, the use of open or close the valve to start slowly, do not suddenly open valve.

、嚴(yán)禁使用掃線蒸汽通過(guò)流量計(jì)

。">6, prohibited the use of steam flowmeter by line sweep.

，流量計(jì)需加旁通管道

。">7, in the continuous use of departments, need to add a bypass pipeline flowmeter.

，管道需沖洗

，沖洗時(shí)采用直管段（替代流量計(jì)位置）防止焊渣、雜物等進(jìn)入流量計(jì)

。">Before the installation of 8, flow meter, pipeline flushing, flushing the pipe (alternative meter position) prevent the welding slag and other debris into the meter.

、嚴(yán)禁用水校驗(yàn)鑄鐵、鑄鋼材質(zhì)組成的流量計(jì)

。">9, check the water meter is composed of cast iron, cast steel.

、流量計(jì)在使用時(shí)流量大小不得超過(guò)技術(shù)要求。">10, when using the size of the flow meter shall not exceed the technical requirements. 。">The flowmeter work on Zui flow 70~80% was better.

、被測(cè)液體如果具有化學(xué)腐蝕性，需選用不銹鋼材質(zhì)的流量計(jì)

，如果腐蝕性強(qiáng)

，需選用0Crl8Ni12MO2Ti材質(zhì)的流量計(jì)。">11, if the measured liquid is corrosive, need to use stainless steel flowmeter, if corrosive, need to use 0Crl8Ni12MO2Ti material flow meter.

、安裝注意事項(xiàng)：">Seven, installation notes:

、在安裝前不得隨意打開(kāi)流量計(jì)的進(jìn)氣，出氣兩封口

；">1, before installation shall not open the inlet flow, the outlet seal two;

、當(dāng)管道上安裝的設(shè)備較多時(shí)，流量計(jì)應(yīng)放在后安裝

；">2, when the pipe is installed on the device more, should be put on after the installation of flow meter;

、在條件允許的情況下

，安裝前須***對(duì)管道進(jìn)行高壓吹掃；">3, where conditions permit, the pipeline must be high pressure purge before installation;

、安裝時(shí)應(yīng)對(duì)接口處的鐵銷

，毛刺進(jìn)行細(xì)心清除；">4, the installation should at the interface of iron pins, careful removal of burr;

、流量計(jì)的前面須***安裝過(guò)濾網(wǎng)

，對(duì)測(cè)量介質(zhì)進(jìn)行過(guò)濾;測(cè)量液體時(shí)，若其中含有氣體

，流量計(jì)前選裝消氣裝置

，確保流量計(jì)的測(cè)量精度；">In front of the 5 meter must be installed, filter, filter media measurement; measurement of liquid, if containing gas, optional getter device flowmeter, ensure the measuring precision of flowmeter;

、安裝方式多樣

，水平豎直安裝均可，豎直安裝上進(jìn)下出

，下進(jìn)上出不受影響

，但流量計(jì)不得反裝，反裝時(shí)

，流向相反

，腰輪反轉(zhuǎn)，因間正反轉(zhuǎn)隙設(shè)計(jì)不同會(huì)損壞腰輪

；">6, installation modes, horizontal vertical installation can be installed vertically progress under the lower upper is not affected, but the meter shall not be reversed, anti loaded, opposite directions, waist wheel reversal, because the rotation between different gap design will damage the waist wheel;

、對(duì)直管段要求較低，但須預(yù)留足夠的安裝過(guò)濾裝置的距離

；">7, on the lower straight pipe section, but must set aside to install filtering device enough distance;

、腰輪轉(zhuǎn)動(dòng)是靠流體的壓差為動(dòng)力的，當(dāng)測(cè)量介質(zhì)的粘稠度過(guò)大時(shí)

，影響流量計(jì)測(cè)量精度

；">8, the waist wheel rotation by fluid pressure is the force of viscous medium, when the measurement is too high, affect the measuring precision of flowmeter;

。">To avoid the above points, the measurement precision can achieve better flowmeter.

、技術(shù)性能：">Eight, technical performance:

project Model	Nominal diameter (mm)	Nominal pressure (Mpa)	The measured liquid temperature (c)	Flow range (M? /h)		% accuracy		The installation form
project Model	Nominal diameter (mm)	Nominal pressure (Mpa)	The measured liquid temperature (c)	Z small flow	Z flow	% accuracy		The installation form
ZW-LL-8	Eight	0~1.6 0~2.5 0~4.0 0~6.4		Zero point two five	Two point five	Zero point two	Zero point five	Horizontal and vertical
ZW-LL-15	Fifteen			Zero point two five	Two point five	Zero point two	Zero point five	、立式">Horizontal and vertical
ZW-LY-20	Twenty		-20~+60	Zero point two five	Two point five	Zero point two	Zero point five	、立式">Horizontal and vertical
ZW-LL-25	Twenty-five			Zero point six	Six	Zero point two	Zero point five	Horizontal and vertical
ZW-LL-40	Forty			One point six	Sixteen	Zero point two	Zero point five	、立式">Horizontal and vertical
ZW-LL-50	Fifty		-20~+120	Two point five	Twenty-five	Zero point two	Zero point five	、立式">Horizontal and vertical
ZW-LL-80	Eighty			Six	Sixty	Zero point two	Zero point five	Horizontal and vertical
ZW-LL-100	One hundred			Ten	One hundred	Zero point two	Zero point five	Horizontal and vertical
ZW-LL-150	One hundred and fifty		-20~+350	Twenty-five	Two hundred and fifty	Zero point two	Zero point five	、立式">Horizontal and vertical
ZW-LL-200	Two hundred			Forty	Four hundred	Zero point two	Zero point five	Horizontal and vertical
ZW-LL-250	Two hundred and fifty		A heat sink	Sixty	Six hundred	Zero point two	Zero point five	、立式">Horizontal and vertical
ZW-LL-300	Three hundred			One hundred	One thousand	Zero point two	Zero point five	、立式">Horizontal and vertical
Pressure loss: the measured liquid viscosity is less than 30mpa.s, the pressure loss is less than 0.05Mpa.

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