VIP member
Temperature pressure compensation gas turbine flowmeter, aluminum alloy turbine flowmeter
1、 Temperature and pressure compensation type gas turbine flowmeter, made of aluminum alloy material. Application: Gas turbine flowmeter is a velocity
Product details
1Temperature pressure compensation gas turbine flowmeter, aluminum alloy turbine flowmeterPurpose:
Gas turbine flowmeter is a velocity type instrument. It has the advantages of high accuracy, good repeatability, simple structure, wide measurement range, small volume, light weight, low pressure loss, and easy maintenance. It can be widely applied in industries such as petroleum, chemical, metallurgical, and urban gas pipeline networks. Especially in urban gas metering, transmission and distribution network metering, and gas pressure regulating station metering, it has been widely used.
2、 Gas turbine flowmeter, LWQ gas trade metering special flowmeter working principle:
Gas turbine flowmeter is a device that places a turbine in the measured fluid. When gas flows through the flowmeter, it is rectified and accelerated by a special structure rectifier. The impeller rotates due to the force exerted by gas on it, and the blades on the impeller cause periodic changes in the magnetic resistance of the magnetic circuit. The angular velocity of the impeller is proportional to the flow rate within a certain flow range. By utilizing the principle of electromagnetic induction, a pulse signal proportional to the volume flow rate of the fluid is induced. This signal is amplified and shaped by a preamplifier, and then integrated by a microcontroller. And displayed on the LCD screen. The signals detected by the temperature and pressure sensors are input into the integrator for processing, and the flow rate under standard conditions will be obtained and displayed on the LCD screen.
IIITemperature pressure compensation gas turbine flowmeter, aluminum alloy turbine flowmeterStructure and characteristics:
1. Structure:
LWQ-A type
Figure 1
1. Shell 2. Bearing 3. Front guide piece 4. Impeller 5. Amplifier 6. Shaft 7. Rear guide piece
8. Concealed oil pot
LWQ-C type
Figure 2
1. Shell 2. Bearing 3. Leading guide 4. Impeller 5. Intelligent accumulator
2. Characteristics:
(1) Wide measurement range, lower limit flow rate below 0.5m/s, low pressure loss, and strong impact resistance of the impeller;
(2) Has high resistance to electromagnetic interference and vibration, and adopts fully sealed isolation protection for self-lubricating shaft
Carrying and storing oil pots, with reliable performance and long working life;
(3) The intelligent flow display adopts ultra-low power single-chip microcomputer technology, with strong overall functionality, low power consumption, superior performance, and non-linear accuracy compensation function. The accuracy of the correction formula is better than ± 0.02%;
(4) The instrument coefficient can be set online through buttons and displayed on the LCD screen. LCD screen is intuitive, clear, and highly reliable;
(5) Pressure compensation can be performed in a stable state of the measured gas pressure.
4Temperature pressure compensation gas turbine flowmeter, aluminum alloy turbine flowmeterMain technical parameters:
1. Basic parameters of flowmeter: see (Table 1)
(Table 1)
|
Model specifications
|
Nominal Diameter
DNmm
|
Start flow rate
m³/h
|
Flow range
m³/h
|
Working pressure
MPa
|
Installation method
|
long
mm
|
tall
mm
|
|
LWQ—40L LWQ—40H
|
40
|
1.8
2.5
|
2.5-50
5-100
|
1.6
2.5
4.0
6.3
10
16
26
42
|
thread
flange
|
140
200
|
250
|
|
LWQ—50L LWQ—50H
|
50
|
2.5
5
|
5-100
10-200
|
flange
|
200
|
300
|
|
|
LWQ—80L LWQ—80H
|
80
|
6
10
|
10-240
20-480
|
flange
|
200
|
350
|
|
|
LWQ—100L LWQ—100H
|
100
|
8
12
|
12-360
27-720
|
flange
|
220
|
400
|
|
|
LWQ—150L LWQ—150H
|
150
|
10
15
|
35-1000
50-2000
|
flange
|
300
|
450
|
|
|
LWQ—200L LWQ—200H
|
200
|
35
60
|
60-1500
100-4000
|
flange
|
300
|
450
|
|
|
LWQ—250L LWQ—250H
|
250
|
40
|
75-3500
negotiate
|
flange
|
400
|
500
|
The length of the clamping table is 120mm
2. Accuracy: Level 1.0, Level 1.5;
3. Usage conditions:
(1) Environmental temperature:- 20℃～50℃；
(2) Relative humidity: 5% to 95%;
(3) Temperature of the tested medium:- 20℃～80℃；
(4) Atmospheric pressure: 86Kpa to 106Kpa;
(5) Explosion proof grade: ib Ⅱ BT4.
4. Flow meter characteristic curve diagram:
5、 Model and specification description:
LWQ——XXX X X
| | | |
|| | | | -- A represents the sensor;
|| | | - | -- B represents on-site display type;
|| | | -- C represents with temperature and pressure compensation;
|| | ---------- represents pressure
|| ---------- represents the diameter of the flow meter;
|------------------- represents a gas turbine;
For example: LWQ-100C-1.6： A gas turbine flowmeter with a diameter of 100mm and a pressure of 1.6Mpa, equipped with temperature and pressure compensation.
6、 Installation method:
1. The instrument installation adopts flange connection, threaded connection and clamping type;
2. During installation, the direction of gas flow should be consistent with the direction indicated by the arrow on the sensor housing, and the upstream straight pipe section should be ≥ 10DN, and the downstream straight pipe section should be ≥ 5DN (DN is the inner diameter of the pipeline);
3. Before installation, check the flexibility of the instrument impeller and blow a small amount of gas towards the turbine. The impeller should rotate and count flexibly
The device is working normally without any noise, sudden stops, or jamming;
4. It is strictly prohibited to weld flanges with a gauge, and the upstream straight pipe section between the filter and the flowmeter must be cleaned strictly. There must be no residual welding slag or other debris in the straight pipe section;
5. Install and check the sealing of the entire system according to the installation diagram requirements to ensure no gas leakage;
6. In order to avoid affecting the normal transmission of gas during maintenance, a bypass pipeline should be installed at the installation location of the sensor (see Figure 7).
Online inquiry
-
Contacts
-
Company
-
Telephone
-
Email
-
WeChat
-
Verification Code
-
Message Content
-