一、用 route:LLYType series screw wing metering fuel nozzle (briefly known as the fuel nozzle) is an instrument used to measure the volume flow rate of liquid flowing through a pipeline. It is suitable for measuring gasoline, kerosene, fuel, and other liquids. The instrument has the advantages of high accuracy and convenience and flexibility in use.As long as the liquid surface of the medium being measured is between the instrument and the liquid surface.2Miz10mThe drop height can be used normally without the need for additional power sources.。

Section Two: Major Technical Specifications:This product is subject toQ/YOY01-90Organize production according to the standard, which has been registered by the provincial standard measurement bureau, with the registration numberQ33N12504-90. Its main technical parameters:

1Nominal diameter and flow rate:

2Measurement accuracy: ±1%

3The measured medium is gasoline. If the medium is kerosene or diesel, it is necessary to make a correction to the flowmeter reading, please refer to the fourth paragraph for details.5Article.

4Maximum Working Pressure: 0.1MPa

Section Three: Main Structure and Working Principle

The structure of the helical wing metering fuel nozzle consists of three parts: the counter, the metering chamber, and the main body. The counter is composed of magnetic coupling devices, cumulative indicators, and zero-return devices. The metering chamber is composed of core frames, impellers, worm gears, and worm gears. The main body is composed of the shell, the inlet and outlet cylinders, and the valve mechanism.

Grip the curved handle tightly, and when the valve is opened, the liquid flows into the metering chamber through the oil intake cylinder. The liquid exerts torque on the impeller, causing it to rotate. The impeller's rotation speed is decelerated through the worm gear, worm wheel, and gear, and then it is driven by the magnetic coupling to operate the counter for accumulation calculation. This allows the volume of liquid flowing through the pipeline to be read.

1、 oil feed pipe

2、 rubber mat

3、 core frame

4、 impeller

5、 Zero-setting mechanism

6、 Cumulative Indicator Part

7、 Magnetic Coupling

8、 worm gear

9、 Valve Mechanism

10、Oil discharge pipe

11、Bended handle

12、Gun body

ThirteenAdjuster

Section 4: Installation Instructions

Before installation, the infusion pipeline and rubber hoses should be cleaned. Then, connect the rubber hose to the tube fitting of the rotor-style metering fueling nozzle and secure it tightly. It can then be used.LLY-25TypeLLY-32Type indicates the available inner diameter25and32Hose connection in use.

1The flow value of the medium to be measured in the pipeline should comply with and remain within the prescribed flow range of the measuring fuel nozzle, please refer to the second paragraph for details.1Article.

2The level of the liquid being measured should be higher than the flowmeter.2-10m的位置。

3andThe front end of the measuring fuel nozzle should be equipped with a "filter device" to ensure the cleanliness of the liquid. The "filter device" can be used with a standard of not less than20Purpose Wire

Cloth, and the total area should be75mmThe above is to filter the liquid.

4The measuring fuel gun is a relatively precise instrument, and it is strictly prohibited to hit or knock it. If the instrument fails, it should be disassembled and inspected carefully in order. After disassembly and assembly, it should be recalibrated and checked.

(1)The precision of a standard container shall not be lower than ±0.2%。

(2)Calibrate at three points within the instrument flow range, low, medium, and high, and test each point three times to obtain an average value. The instrument's measurement precision is calculated according to the following formula:

   If the instrument precision needs to be adjusted during calibration, remove the lead seal, remove the lead seal screws, then loosen the tightening screws, twist the adjustment screws in for a positive adjustment, twist them out for a negative adjustment, and then reinstall them in order. After calibration, the instrument should meet the precision requirements.

5This fuel nozzle belongs to a speed-type instrument, and the changes in the viscosity and density of the medium affect the instrument's reading. It is calibrated for gasoline when it leaves the factory.(Simulated Gasoline")Calibrated for the medium, so when measuring kerosene or diesel, the indicator value of the instrument should be corrected. If conditions allow, the user should re-calibrate under the operating conditions. Kerosene's viscosity is greatly affected by temperature, so the coefficients for different temperature corrections have differences. The correction coefficients have been experimentally derived and are recommended to the user.

   The calculation formula is as follows: Actual fuel quantity = Correction coefficient × Flowmeter indication value.(liters"(")

Correction Factor:

(1)Medium is kerosene, kerosene correction factor =0.994

(2)When the medium is diesel:

                 Oil temperature >10"℃" is the symbol for Celsius temperature scale.The diesel correction factor is equal to =0.978

                 Oil temperature ≤10"℃" is the symbol for Celsius temperature scale.The diesel correction factor is equal to =0.957

ThreeApplication instance:

       Measuring diesel oil, oil temperature is13"℃" is the symbol for Celsius temperature scale.When the fuel nozzle gauge indicates the value.150litersPlease provide the text you want to translate from Chinese to English.

       Actual fuel quantity = 0.978×150liters=146.7liters

       Answer: The actual amount of fuel added is146.7liters。

6Installation Diagram

Formal Declaration: Due to the different sizes of the north and south, please ensure to measure the inner diameter of the oil tube carefully to prevent unnecessary losses!