Gas Turbine Flow Meter from China Manufacturer

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Gas Flow Meter

Introduction

Application

Technical data

Installation

Introduction

QTWG series gas turbine flow meter is a new generation of high-precision and high-reliability gas precision measuring instrument, which is based on the advanced technology of flow meters domestic and abroad. It has excellent low-pressure and high-pressure metering performance, various signal output modes and low sensitivity to fluid disturbance. It is widely used for natural gas, coal-based gas, liquefied gas and other gases application.

Advantages

Gas Turbine Flow Meter Advantages and Disadvantages
Gas turbine flow meter is with advanced rectification technology and dust-proof structure. It is with built-in temperature and pressure sensors which can achieve automatically compensation to make sure high accuracy. Gas turbine flow meter provides good solution for custody transfer between parties.
Compared with precession vortex flow meter, gas turbine flow meter is with low pressure loss, low initiating flow and wider measurement range. The display of gas turbine flow meter support to rotate 350°, easy to read data in different directions.

Application

Gas turbine flow meter is mainly used for natural gas, LPG, coal gas etc. Widely used in various industries of gas metering and gas pressure regulating stations such as petroleum, chemical, electric power, industrial boilers, gas transmission and distribution pipeline networks, and urban natural gas metering.

Natural Gas

Petroleum

Chemical

Electric Power.

Industrial Boilers

Gas Metering

Technical data

Table 1: Gas Turbine Flow Meter Parameters

Nominal Diameter	DN25-DN400
Nominal Pressure	1.0Mpa/1.6Mpa/2.5Mpa/4.0Mpa
Range Ratio	Max 40:1 (under P=101.325Kpa,T=293.15K)
Accuracy	1.5% (Standard), 1.0 (Optional)
Repeatability	Better than 0.2%
Explosion Proof	ExiallCT6Ga
Protection	IP65
Shell Material	Aluminum Alloy/Carbon Steel/Stainless Steel
Power Supply	3.6V Lithum Battery Powered External power DC18-30V
output Signal	4-20mA,Pulse,Alarm
Communication	RS485 Modbus RTU

Table 2: Gas Turbine Flow Meter Dimension

Size	L	D	K	N-φh	H	W	Remarks
DN25(1")	200	115	85	4-φ14	335	200	1.Flange information according to PN16 GB9113.1-2000 2.Other flanges are available
DN40(1½")	200	150	110	4-φ18	365	230
DN50(2")	150	165	125	4-φ18	375	275
DN80(3")	240	200	160	8-φ18	409	280
DN100(4")	300	220	180	8-φ18	430	285
DN150(6")	450	285	240	8-φ22	495	370
DN200(8")	600	340	295	12-φ22	559	390
DN250(10")	750	405	355	12-φ26	629	480
DN300(12")	900	460	410	12-φ26	680	535
DN400(16")	1200	580	525	16-φ30	793	665

Table 3: Gas Turbine Flow Meter Flow Range

DN (mm/inch)	Model	Flow specification	Flow range (m3/h)	Qmin (m3/h)	Max.pressur e loss (Kpa)	Shell material	Weight(kg)
DN25(1″)	QTWG-25(A)	G50	5-50	≤1	1	≤1.6MPa Aluminum Alloy ≥2.0MPa Carbon steel or SS304	7
DN40(1½″)	QTWG-40(A)	G60	6-60	≤1	1		8
50(2")	QTWG-50(A)	G40	6.5-65	≤1.3	0.9		8.5
	QTWG-50(B)	G65	8-100	≤1.6	0.8
	QTWG-50(C)	G100	10-160	≤2.4	2.0
80(3")	QTWG-80(A)	G100	8-160	≤2.4	1.0		9.5
	QTWG-80(B)	G160	13-250	≤3.0	1.6
	QTWG-80(C)	G250	20-400	≤5.0	2.0
100(4")	QTWG-100(A)	G160	13-250	≤3.3	1.0		15
	QTWG-100(B)	G250	20-400	≤4.2	1.6
	QTWG-100(C)	G400	32-650	≤6.7	1.8
150(6")	QTWG-150(A)	G400	32-650	≤7.8	1.6		27
	QTWG-150(B)	G650	50-1000	≤10	2.0
	QTWG-150(C)	G1000	80-1600	≤12	2.3
200(8")	QTWG-200(A)	G650	50-1000	≤13	1.6	Carbon Steel or SS304	45
	QTWG-200(B)	G1000	80-1600	≤16	2.0
	QTWG-200(C)	G1600	130-2500	≤20	2.2
250(10")	QTWG-250(A)	G1000	80-1600	≤20	1.2		128
	QTWG-250(B)	G1600	130-2500	≤22	2.0
	QTWG-250(C)	G2500	200-4000	≤25	2.3
300(12")	QTWG-300(A)	G1600	130-2500	≤22	1.6		265
	QTWG-300(B)	G2500	200-4000	≤25	2.0
	QTWG-300(C)	G4000	320-6500	≤35	2.3
400(16")	QTWG-400(A)	G1600	300-2500	≤25	1.8		380
	QTWG-400(B)	G2500	500-4000	≤35	2.0
	QTWG-400(C)	G4000	600-8000	≤40	2.3

Table 4: Gas Turbine Flow Meter Model Selection

QTWG	Parameters	XXX	X	X	X	X	X	X	X
Size (mm)	DN25-DN400mm
Accuracy	1.5% (standard)		1
Accuracy	1.0%		2
Nominal	1.0MPa			1
Pressure	1.6MPa			2
	2.5MPa			3
	4.0MPa			4
	Others			5
Body Material	Aluminum Alloy (For size below DN150mm)					1
	Carbon Steel					2
	Stainless Steel					3
Output/Communication	Pulse+4-20mA						1
	Pulse+4~20mA+485						3
	Pulse+4~20mA+HART						4
Power Supply	Battery Powered + External Power DC24V (two-wire)							1
Power Supply	Battery Powered +External Power DC24V (three-wire)							2
Ex-proof	With								1
Ex-proof	Without								2

Installation

Installation Requirement for Gas Turbine Flow Meter
In order to obtain a stable and accurate flow measurement, it is very important that the flow meter is installed correctly in the pipe system
Flow meter need to be installed on horizontal pipeline. The inner diameter of the flow meter need to be as same as inner diameter of pipeline, and the axis of the flow meter should be concentric with the axis of the pipeline during installation
Recommend to install indoors. If need to install outdoors, please make good protection from direct sunlight and rain
In order to ensure the normal use of the medium is not affected when the flow meter is overhauled, a shut-off valve should be installed on the upstream and downstream of the flow meter. A bypass pipeline should be provided. The flow control valve must be installed downstream of the flow meter, and the upstream valve must be fully open when the flow meter is used.

Gas Turbine Flow Meter Maintenance
Gas turbine flow meter need to do oil filling operation regularly to ensure bearings work smoothly.
There’s oil filling operation indication on each Q&T gas turbine flow meter’s body. Follow the indication to do oil filling regularly is fine.