DC-LWQ gas turbine flowmeter installation and maintenance tips

DC-LWQ gas turbine flowmeter installation and maintenance tips

DC-LWQ gas turbine flowmeter installation and maintenance tips

DC-LWQ gas turbine flowmeter is a conventional flow measuring instrument, having a flexible, stable performance, high reliability, simple installation, etc., are widely used in steel plants, coking plants, petroleum, chemical, thermodynamic, medical In the thermal power plants, environmental protection and other industries, the main measures are gas, air, nitrogen, acetylene, hydrogen, natural gas, nitrogen and so on. Let's introduce the installation focus and requirements of the gas flow meter, hoping to help users better apply the product.

Gas flowmeter installation focus

1. The liquefied gas flowmeter is a speed type flowmeter. The stability of the vortex separation is affected by the flow rate, so it has certain requirements for the straight pipe section, generally the first 10D and the last 5D;

2, when the measurement of liquid, the upper limit of the flow rate of pressure loss and cavitation limits, typically 0.5 ~ 8m / s;

3, the measurement gas, the upper limit of the flow rate of the medium is limited compressibility changes, the lower limit of the flow rate and the Reynolds number is limited by the sensitivity of the sensor, the steam is 8 ~ 25m / s;

Gas flowmeter installation requirements

1. Length of straight pipe before and after. Straight inlet conduit to ensure ≥ 20 × DN; straight outlet conduit ≥ 5 × DN.

2. The inner diameters of the upstream and downstream pipes should be the same. If there is a difference, the inner diameter Dp of the piping and the inner diameter Db of the vortex gauge body should satisfy the following relationship:

0.98Db ≤ Dp ≤ 1.05Db

The upstream and downstream piping should be concentric with the inner diameter of the flow meter body, and the different axial degrees between them should be less than 0.05Db.

3. The gasket between the meter and the flange cannot protrude into the tube during installation. The inner diameter should be 1-2mm larger than the inner diameter of the body.

4. Installation design of pressure measuring hole and temperature measuring hole. When the temperature and pressure transmitter need to be installed in the pipeline to be tested, the pressure measuring hole should be set at 3-5D downstream , and the temperature measuring hole should be set at 6-8D downstream . D is the gauge diameter of the instrument, unit: mm

5. The meter can be installed horizontally, vertically or obliquely on the pipe.

When measuring gas, the instrument is installed in a vertical pipe, and the gas flow direction is not limited. However, if the pipe contains a small amount of liquid, in order to prevent liquid from entering the metering tube, the air flow should flow from bottom to top.

6. When measuring high temperature and low temperature media, pay attention to insulation measures.

Gas flow meter maintenance tips

Looking at it is cumbersome, but this is a key step in cleaning and maintenance. The finer the details, the better. After maintenance, there will be no problems due to installation or maintenance. If there is a problem, it will be more troublesome.

Gas flowmeter will produce certain dirt and wear during use. Users need to regularly maintain the gas flowmeter. The following describes the gas flowmeter maintenance skills. I hope to help everyone.

First, the smart flow meter external wipe step:

1. Wipe the flowmeter with a dry cotton cloth or a wiping paper to wipe off dust, oil, dirt, oil, etc.

2. You can also use a blower to blow off the dust.

3. If necessary, use a clean, dry cotton cloth with industrial or high-grade lubricant to wipe the surface.

Second, the flow meter mirror wipe step:

1. Gently wipe the surface of the mirror with a mirror paper. Do not use force to avoid hurting the mirror surface.

2. Dip the industrial alcohol with a cotton swab, gently wipe the surface of the mirror, and wait for the alcohol to evaporate before putting it back.

3. Mirror wiping can be divided into the correction glass piece and the lens group inside the lens. Since the dust particles will cause the black spots of the image, the mirror surface wipe is important. After the device, the image is observed again by the image.

Third, the flowmeter transmission part: the dry friction part and the lubrication part, the dry friction part has the distinction of the air bearing and the toothless screw transmission mechanism.

Dry friction part maintenance steps:

1. Wipe the surface with a dry cotton cloth or a wiping paper to wipe off dust or oil.

2. You can also use a blower to blow off the dust.

3. If necessary, use a clean, dry cotton cloth with industrial or high-grade lubricant to wipe the surface.

PE Sheath And Insulation Compounds

High Density Polyethylene Insulation Compound,Black Linear Low Density PE Compounds,Aerial Cable Polyethylene Insulation Compound,High Density Polyethylene Sheath Compounds

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