In urban water supply systems, flow measurement is a key link to ensure efficient management of water resources and stable operation of facilities. Ultrasonic flowmeter, as a non-contact measurement tool, has gradually been widely used in the field of water supply due to its unique advantages. This article will introduce the application scenarios and practical effects of ultrasonic flow meters in water supply systems through several typical cases, and analyze their working principles and practical value in the form of science popularization.1. Basic principles and working methodsUltrasonic flow meters calculate flow velocity by emitting ultrasonic signals and measuring the time difference of their propagation in the fluid. Specifically, when ultrasound propagates in a fluid in both forward and backward directions, its propagation time varies depending on the fluid velocity. By calculating this time difference and combining it with the cross-sectional area of the pipeline, the device ca...

Using high-frequency mechanical vibration to remove or prevent scaling inside pipelines, suitable for long-term operation of high-temperature hot water systems.Industrial high-temperature pipeline descaling·Applied to steam, hot water, thermal oil and other pipelines to remove deposits such as alkali scale, oil scale, and water scale.·No need to dismantle pipelines, no need for chemical agents, environmentally friendly and can be maintained online.Heat exchanger anti scaling protection·Prevent scaling ions from depositing on the pipe wall through mechanisms such as cavitation, shear, and inhibition.·Energy saving of about 30%, extending equipment life, suitable for boilers, evaporators, cooling towers, etc.High cleanliness requirements in the food and pharmaceutical industriesUltrasonic cleaning can avoid chemical residues and is suitable for precision heat exchangers and microchannel pipelines.

This type of device is based on the time difference method or Doppler effect principle, used to measure the flow rate, velocity, temperature, and heat of hot water, and is widely used in scenarios that require precise measurement and energy efficiency management.·Urban central heating systemReal time monitoring of instantaneous flow rate, cumulative flow rate, and heating capacity of heating hot water, supporting charging based on heat.In the renovation of old residential areas in Shijiazhuang, Inner Mongolia and other places, the deployment has increased the compliance rate of user room temperature to 98% and reduced the dispute rate of heating fees by 70%.Compliant with the national "Technical Regulations for Heating Metering" and EU MID, OIMLR75 and other metering standards.Industrial circulating water and process hot water system·Used for flow monitoring of cooling water and process hot water in industries such as chemical, power, and steel.·Non contact installatio...

In recent years, ultrasonic cleaning technology has been widely used in industrial fields such as automotive manufacturing, aerospace, electronic semiconductors, and optical precision manufacturing, relying on the micro cleaning ability of cavitation effect. It gradually replaces traditional manual or spray cleaning methods, effectively solves the cleaning problems of complex structural components, and helps the manufacturing industry improve quality and efficiency, and reduce costs.In the field of automotive parts manufacturing, ultrasonic cleaning technology has become the core support for mass production. A certain German automotive parts supplier uses a five slot ultrasonic cleaning system to treat engine cylinder heads, achieving full process automation of "heavy oil cleaning → precision rinsing → spraying → rust prevention → drying", reducing residual oil from ≥ 15g/m ² to ≤ 0.5g/m ², significantly reducing the number of metal particles, achieving VDA19 standa...

1. The packing should be locked againIf there is slight leakage at the packing, the stem nut must be locked again. But don't lock it too tightly, usually lock it for 1/4 turn to 1 turn, and the leakage will stop.2. Replace the valve seat and seal1. DisassemblyPut the valve in the half-open position, flush and remove the possible dangerous substances inside and outside the valve body, close the ball valve, remove the connecting bolts and nuts on the flanges on both sides, and then completely remove the valve from the pipeline. Disassemble the drive device in sequence - actuator, connecting bracket, lock washer, stem nut, butterfly shrapnel, glam, wear-resistant sheet, stem packing.Remove the body cover connecting bolts and nuts, separate the bonnet from the body, and remove the bonnet gasket. Make sure the ball valve is in the "closed" position, which makes it easier to remove it from the body and then the seat. Gently push the valve stem downward from the hole in the valv...

Ball valves are divided into: floating ball valve, fixed ball valve, orbital ball valve, V-shaped ball valve, three-way ball valve, stainless steel ball valve, cast steel ball valve, forged steel ball valve, ash discharge ball valve, anti-sulfur ball valve, pneumatic ball valve, electric ball valve, ferrule Ball valve, welded ball valve.According to the shell/body material classification, ball valves can be divided into:1. Metal material valve: such as carbon steel valve, alloy steel valve, stainless steel valve, cast iron valve, titanium alloy valve, Monel valve, copper alloy valveDoors, aluminum alloy valves, lead alloy valves, etc.2. Metal valve body lining valves: such as rubber-lined valves, fluorine-lined valves, lead-lined valves, plastic-lined valves, and enamel-lined valves.3. Non-metallic material valve: such as ceramic valve, glass valve, plastic valve.There are many domestic manufacturers of ball valves, and most of the connection sizes are not uniform. Mainly divided into ...