BR-LLQ Roots (waist wheel) flow meter maintenance instructions

Abstract: BR-LLQ Roots (waist wheel) flow meter maintenance instruction information is provided by excellent flow meter and flow meter production and quotation manufacturers. In February, a Sichuan customer ordered a BR-LLQ Roots flowmeter from our company to measure the flow of natural gas in pipelines. The installation and use have been good from March to May. At the beginning of June, they called our technology and said they wanted to change the installation location. We said Yes, as long as the safety of the flowmeter is met. More flowmeter manufacturers select models and price quotations. You are welcome to inquire. The following is the details of the BR-LLQ Roots (waist wheel) flowmeter maintenance instructions article. In February, a Sichuan customer ordered a BR-LLQ Roots flowmeter from our company to measure the flow of natural gas in pipelines. The installation and use have been good from March to May. In early June, they called our technology and said they wanted to change the installation location. We said Yes, as long as it conforms to the installation specifications of the flowmeter, please read the manual carefully before changing the location, pay attention to related problems, and consult in time if there is anything you do not understand. A few days later, the customer came and said that the flowmeter has changed its position, but after opening the valve, the reading on the meter has always displayed the original data, and it has not changed, and it is confirmed that the natural gas in the pipeline is flowing, and the valve is opened very wide, and it can be heard. to the sound of gas flowing in the pipe. After communication and communication, the customer determines that they have no way to solve the fault, we recommend returning the instrument to our factory for maintenance. The maintenance status is as follows: 1. Inspection status 1. BR-LLQ-85/50 (factory date 160219) when the Roots flowmeter is received, the inlet and outlet are open; 2. The rotor does not rotate during the bump test; 3. Open the rotor compartment, A lot of dust and welding slag-like substances were found, some of which were very hard and severely scratched; 4. Rotor wear, pits, corners, gear wear, deformation, and shaft bending. (Dust in Roots flowmeter housing) (Roots flowmeter rotor compartment wear) (Roots flowmeter shaft pad damage) (Roots flowmeter rotor is uneven when stuck by hard objects) (Roots flowmeter rotor test data) (Note: For more high-definition inspection photos, please online customer service.) 2. Reason analysis 1. The measurement medium contains a lot of impurities, and there is no filter device installed at the inlet end of the waist wheel flowmeter; 2. There is no purging and cleaning in the pipeline before installation, especially Welding slag left by the welding flange; 3. The instantaneous flow of gas is too large, causing the rotor to be violently impacted, causing the gear and shaft to deform. 3. It is recommended to replace the rotor, gear and shaft for maintenance. Quantity: rotor x2, gear x2, shaft x2. 4. Recommendations for use 1. Install a filter device at the front of the waist wheel flowmeter, such as filters, filters, etc.; 2. Clean up the pipeline before installing the flowmeter; 3. After the flowmeter is installed, open the front valve slowly. Make the gas slowly pass through the flowmeter, and slowly increase the flow rate after stabilization. The maximum flow rate should not exceed the upper limit of the maximum range of the flowmeter. 4. If you have other questions, please refer to the instruction manual or call the after-sales engineer. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'BR-LLQ Roots (waist wheel) flow meter maintenance instructions'

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