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腰轮流量计产品概述Overview of lumbar flowmeter products腰轮流量计主要由计量腔、密封联轴器和计数器三部分组成。可现场指示累积流量和瞬时流量,配以发信器及流量智能控制仪,可实现远距离测量和控制。广泛用于石油机械、化工部门、电力部门、冶金、交通、食品加工、医药、国防、商业贸易等部门对石油及石油制品、化学溶液等流体的*测量。The waist wheel flowmeter is mainly composed of metering chamber, sealin···

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腰轮流量计产品概述

Overview of lumbar flowmeter products

腰轮流量计主要由计量腔、密封联轴器和计数器三部分组成。可现场指示累积流量和瞬时流量,配以发信器及流量智能控制仪,可实现远距离测量和控制。广泛用于石油机械、化工部门、电力部门、冶金、交通、食品加工、医药、国防、商业贸易等部门对石油及石油制品、化学溶液等流体的*测量。

The waist wheel flowmeter is mainly composed of metering chamber, sealing coupling and counter. It can indicate the cumulative flow and instantaneous flow on the spot. With the transmitter and flow intelligent controller, the remote measurement and control can be realized. It is widely used in petroleum machinery, chemical industry, electric power, metallurgy, transportation, food processing, medicine, national defense, commercial trade and other departments to measure oil, petroleum products, chemical solutions and other fluids.

2.工作原理

2. Working principle

当被测液体流经计量室时,在流量计的进出口形成 压差,腰轮在此压差的推动下旋转。同时通过固定在腰轮轴上的一对驱动齿轮,使两个腰轮保持连续旋转。随着腰轮的转动,液体经由计量室被不断排出流量计。每对流过的液体量是计量室容积的四倍,通过密封联轴器、减速机构,将旋转次数减速后传递到计数器,计数器即指示液体瞬时流量和累积流量。在计数器机构中安装发信器即成了带发信器的腰轮流量计。与显示仪表或微机系统配套,可实现远传(定量、累积、瞬时等功能)自动化测量和控制。使用说明另见显示仪表分类说明书。

When the measured liquid flows through the metering chamber, a differential pressure is formed at the inlet and outlet of the flowmeter, and the waist wheel rotates under the pressure difference. At the same time, through a pair of driving gears fixed on the lumbar axle shaft, the two waist wheels can keep continuous rotation. With the rotation of the waist wheel, the liquid is continuously discharged from the flowmeter through the metering chamber. The amount of liquid flowing through each pair is four times of the volume of the metering chamber. Through the sealing coupling and deceleration mechanism, the rotation times are decelerated and transmitted to the counter. The counter indicates the instantaneous flow rate and cumulative flow rate of the liquid. When the transmitter is installed in the counter mechanism, it becomes a lumbar flowmeter with a transmitter. With display instrument or microcomputer system, it can realize remote transmission (quantitative, cumulative, instantaneous and other functions) automatic measurement and control. Please refer to the Classification Manual of display instrument for instructions.


3. Material combination of main parts

Material parts

RZLL-AL

RZLL-EL

RZLL

cast iron

Cast aluminum

stainless steel

cast steel

Cast aluminum

stainless steel

cast iron

cast iron

Cast aluminum

stainless steel

housing








rotor








Cover plate








Rotor shaft








Bearing








4. Performance and pressure loss curve


 5.腰轮流量计技术参数  

① 公称压力(MPa):0.6、1.0、1.6、2.5、4.0  ② 工作温度:(℃):-10~60  ③ 精度等级:0.5、0.2  ④ 流量范围:(m3/h)

Nominal diameter DN

Liquid viscosity 3.0~150mpa.s

Liquid viscosity 3.0~150mpa.s

Liquid viscosity 3.0~150mpa.s

Liquid viscosity 3.0~150mpa.s

15

0.25~2.5

0.5~2.5

0.5~2.5

0.83~2.5

20

0.25~2.5

~2.5

0.5~2.5

0.83~2.5

25

0.6~6

1.2~6

1.2~6

2~6

40

1.6~16

3.2~16

3.2~16

5.3~16

50

2.5~25

5~25

5~25

8.3~25

80

6~60

12~60

12~60

20~60

80Ⅱ

12~100

22~100

20~100

33.3~100

100

10~100

20~100

20~100

33.3~100

150

40~200

40~200

100~200

66.7~200

Accuracy class

                0.5

             0.2

6. 外形及安装尺寸


(1)铸铁型腰轮流量计外形尺寸

(1) Outline dimension of cast iron waist wheel flowmeter

L

H

I

B

D

D1

n-d

160

238

52

100*100

G11/4



160

238

52

100*100

90

65


180

260

68

120*120

G1/



240

290

88

170

150

110

4-17.52

265

305

97

190

165

125

4-C17.52

265

340

122

246

200

160

8-17.52

265

470

164

246

200

160

8-18

515

425

164

305

220

180

8-18

560

550

225

455

285

240

8-22

(2)铸钢型腰轮流量计外形尺寸

(2) Outline dimension of cast steel waist wheel flowmeter

L

H

I

B

D

D1

n-d

180

260

68

120*120

G11/4



300

290

88

170

150

110

4-18

360

315

103

276

165

125

4-18

360

348

128

254

200

160

4-18

540

435

174

330

235

190

4-22

560

552

227

455

300

250

4-26

(3)铸铝型腰轮流量计外形尺寸与铸铁型腰轮流量计外形尺寸相同

(3) The outline dimension of cast aluminum type waist wheel flowmeter is the same as that of cast iron type waist wheel flowmeter

7.腰轮流量计的安装使用

7. Installation and use of lumbar flowmeter

(1)流量计前应安装过滤器,两者表体上箭头指向与流动方向一致

(1) A filter should be installed in front of the flowmeter, and the arrow on the body of both meters points to the same direction as the flow

(2)当被测液体含有气体时,流量计前应安装气体分离器

(2) When the measured liquid contains gas, a gas separator should be installed in front of the flowmeter

(3)不论管路是垂直还是水平安装,但流量计的腰轮轴安装成水平位置(即表度盘应与地面垂直)。

(3) Whether the pipeline is installed vertically or horizontally, the lumbar axle shaft of the flowmeter shall be installed in a horizontal position (i.e., the dial shall be vertical to the ground).

(4)流量计在正确安装情况下,如果不易看清读数,可把计数器旋转180度或90度均可。

(4) When the flowmeter is installed correctly, if it is difficult to see the reading clearly, the counter can be rotated 180 or 90 degrees.

(5)节流阀应安装在流量计进口处,开闭阀装在出口处,使用开闭阀时要缓慢启动,不要突然开阀。

(5) The throttle valve should be installed at the inlet of the flowmeter, and the on / off valve should be installed at the outlet. When using the on / off valve, it should be started slowly, and the valve should not be opened suddenly.

(6) 严禁使用扫线蒸汽通过流量

(6) It is forbidden to use sweeping steam to pass through the flow

(7)在连续使用部门,流量计需加旁通管道

(7) In the continuous use department, the flowmeter needs to be equipped with bypass pipe

(8)流量计安装前,管道需冲洗,冲洗时采用直管段(替代流量计位置)防止焊渣、杂物等进入流量计

(8) Before the flowmeter is installed, the pipeline needs to be flushed, and the straight pipe section (instead of the flowmeter position) is used to prevent welding slag and foreign matters from entering the flowmeter

(9)严禁用水校验铸铁、铸钢材质组成的流量计

(9) It is forbidden to use water to calibrate the flowmeter made of cast iron and cast steel

(10)流量计在使用时流量大小不得超过技术要求。流量计正常工作在大流量70~80%为优。

(10) When the flowmeter is in use, the flow size shall not exceed the technical requirements. When the flow meter works normally, the flow rate is 70 ~ 80%.

(11)被测液体如果具有化学腐蚀性,需选用不锈钢材质的流量计,如果腐蚀性强,需选用0Crl8Ni12MO2Ti材质的流量计。

(11) If the measured liquid has chemical corrosivity, stainless steel flowmeter should be selected; if corrosive, 0crl8ni12mo2ti flowmeter should be selected.



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