Analysis of some minor faults in boiler steam flowmeter

Analysis of some minor faults of boiler steam flowmeter

1. The field instrument frequency changes a lot, exclusion method:

A/ First check whether the pipe section meets the requirements. The gas can be relaxed to ensure that the 5D straight pipe section after the first 10D is OK. The liquid straight pipe section does not affect the size of the straight pipe section enough. The straight pipe section is not recommended to change the installation position.

B/ electromagnetic interference may be the scene, methods to strengthen the filter function, the sensitivity down, through the dial switch to achieve.

C/site flow rate is too small, lower than the lower limit of the instrument, for example, 300-gauge plug-in test gas, the lower limit is 1500m/h, but the site indicates 500 cubic meters of instantaneous flow, because the meter is at the lower limit, the value does not change linearly. Can explain or increase traffic to customers.

A similar situation can occur with D/Measurement of pulsatile flow in liquids.

2. There is 50HZ interference on site, which is generally not covered by the outer edge of the shielded wire. Exclusion method The instrument is connected to the outer edge of the shield and the system is not connected to the outer edge of the shielded wire.

3. No signal on site

A steam flowmeter cut off no excessive flow, to modify the parameter adjustment.

The B/ meter is powered off and the test power is removed.

The C/flow rate is low and the trigger signal point D4-20mA is not set.

4. The actual flow increases, but the meter display decreases. It is definitely the cause of the working condition. It can help the customer to find the problem and the meter can be set without problems.

5. The actual flow rate decreases, the instrument display increases, most of which is vibration or the gasket is not at the center point of the pipe during installation, allowing the customer to reinstall the meter.

6. The meter display in the same condition is inconsistent with a large difference.

A/The customer's experience is wrong, or there are differences in working conditions, such as problems with the direction of the pipeline, problems with straight sections, and vibration problems.

B/Parameters Customer Modified

C/flow is too small, the lower limit is not linear

D/ stability compensation table, pressure temperature failure

7.4-20mA output meter, display and system display are inconsistent

The unit of A/parameter setting is inconsistent or the range is not consistent

The B/4-20mA output cable is too long (over 1000 meters) to lose much

8. The flow rate displayed by the meter is very different from the actual one. Most of the reasons are due to the parameter setting unit.

Metal Cutting Machine


CE3015 Efficient and Economical Fiber Laser Cutting Machine

Series number

Name of components and parts

Brand

Quantity

Unit

Remark

1

Body

Welding

1

set

2

Beam

cast aluminium(ZL104)

1

set

3

Moving objects

cast aluminium(ZL104)

1

set

4

Laser

Chuangxin

1

set

5

Cutting head

Raytools

1

set

6

Gear

Taiwan YYC

10

piece

7

Rack

Taiwan YYC

3

unit

8

Guide rail

Taiwan HIWIN

6

piece

9

Motor

Japan panasonic servo

3

unit

10

Reducer

France MOTOVARIO

3

unit

11

Bearing

Japan NSK

As requried

12

System

Shanghai Weihong

1

set

13

Cooling machine

Tongfei Refrigeration

1

set

14

Industrial Personal Computer

Taiwan Advantech

1

set

15

Electric elements

France Schneider

As requried

16

Proximity switch

Japan Omron

4

set

17

Switching power

Taiwan Mean Well

1

block

18

Travel switch

Delixi

1

piece

19

Cylinder parts

Japan SMC

As requried


15

Technical parameters

1

Type

CE3015

2

Effective Cutting Width(mm)

1500

3

Effective Cutting Length(mm)

3000

4

Lift(mm)

0-80

5

Input power

AC380V/50Hz;AC220V/50Hz

6

Cutting thickness(mm)

Stainless 6mm, carbon steel 14mm

7

Cutting speed( mm/min )

28000 (15000W/δ1mm Stainless )

8

Idle speed( mm/min )

100000

9

Max acceleration (G)

1.2

10

Position repeat accuracy

±0.05

11

Drive mode

Precision rack bilateral drive

12

Laser wavelength(nm)

1080

13

cooling mode

water-cooling

14

Environment temperature

5-35℃

15

Cutting material

Carbon steel, stainless steel, alloy steel, copper, aluminum, galvanized sheet



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