The precession vortex flowmeter is used for the measurement of natural gas in the enterprise

There are many companies that use precession vortex flowmeters, but for enterprises, what kind of errors will occur when they use precession vortex flowmeters to measure natural gas? Let's find out with me. The main purpose of the precession vortex flowmeter error processing method is to prevent the generation of errors, so it is necessary to use these methods to deal with the relevant error factors, and the specific methods will be discussed below. 1. Correct type selection In order to avoid improper selection of precession vortex flowmeter, natural gas companies must comply with the basic requirements and correctly select the type of precession vortex flowmeter according to the actual situation. The basic requirements are: first determine the diameter of the vortex flowmeter according to the user's gas flow, and then select a flowmeter whose diameter meets the user's gas consumption requirements. rather than the volume flow under standard conditions. Combined with the actual situation, natural gas companies need to pay attention to two key conditions, namely the relationship between the flow rate and the flow rate, and the flow rate of the flow section. According to the above case (1.1), the double-probe precession vortex flow rate cannot be selected in the relationship between the flow rate and the flow rate. If the meter is used, the single-probe flowmeter can be considered, and the single-probe flowmeter cannot be used in the low-flow section. According to the basic requirements of flowmeter selection and combined with the actual situation on site, the correct selection of flowmeter can be ensured, and measurement errors can be avoided to a certain extent. 2. Increase the turbulence protection strength During the use of the precession vortex flowmeter, the turbulence factor is unavoidable, so the turbulence protection must be done well. If it is found that the turbulence protection is insufficient, it must be strengthened. At this point, in order to strengthen the turbulence protection, natural gas companies must first carefully select the turbulence protection equipment. Common equipment includes flow and pressure regulating valves and vibration reduction devices. At the same time, it is necessary to ensure that such equipment is compatible with precession The anti-interference requirements of the vortex flowmeter are matched; secondly, these turbulence protection devices must be installed correctly. The basic principle is that all turbulence protection devices must be installed upstream of the flowmeter. If there are restrictions in the actual situation, it is necessary to extend the length of the upstream straight pipe to complete Installation, but the method of extending the length of the straight pipe is not recommended for frequent use, otherwise it will increase the cost of spoiler protection. 3. Correct installation of the flowmeter Install the precession vortex flowmeter correctly in strict accordance with the installation requirements. Do not neglect: (1) Regarding the installation direction, the installer must carefully observe the airflow direction arrow on the flowmeter housing before installation. Vortex flowmeter manufacturers will mark the airflow direction arrow on the flow housing for the convenience of installation. The installer should refer to the arrow, and make sure that the direction of the arrow is consistent with the flow direction of the natural gas flow to ensure that the precession vortex flowmeter is installed in the correct direction; (2) the length of the straight pipe section, first of all countries that have strict rules for the length of the precession vortex flowmeter straight pipe In most cases, the length of the straight pipe can be controlled according to the specification standard. Secondly, if there are special circumstances, the length of the straight pipe can be lengthened appropriately, but the phenomenon that the length of the straight pipe is too short must not occur. In addition, in order to give full play to the role of the straight pipe section, when the length of the straight pipe section reaches the standard, the installer should clean the interior of the straight pipe to prevent foreign objects and protrusions from affecting the airflow; (3) Pipe type selection, the installer is installing Before, it is necessary to confirm whether the pipeline can be used for flowmeter installation according to the pipeline load-bearing parameters. If the load-bearing parameters are lower than the self-weight of the precession vortex flowmeter, the installation pipeline should be replaced. If the pipeline cannot be replaced, the support should be installed on the surrounding wall. Avoid pipe deformation; (4) For the installation location, the installer should inspect the surrounding environment of the installation location in advance. If vibration factors are found, they should eliminate or avoid them to minimize vibration interference. If the vibration effect cannot be completely avoided, additional installation Anti-vibration base, and then install the precession vortex flowmeter. 4. Environmental factors treatment method For the influence of environmental factors, the best treatment method is to separate natural gas in advance, but if conditions do not allow, two methods can be used to avoid: (1) Install a filter on the upstream end of the flowmeter (2) Regular cleaning, that is, whether or not a filter is used, the flowmeter will still be affected by environmental factors under long-term application, but as long as regular cleaning is done to remove environmental pollution factors, the maximum to prolong the life of the equipment and avoid measurement errors. Now the finishing of the above content hopes to help more users. The above is officially for the treatment of errors when enterprises use the precession vortex flowmeter when measuring natural gas, and it is also for users to use the precession vortex flowmeter in the future. It can effectively prevent the occurrence of errors.
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