一种适用于高压天然气场站的高精度流量计量系统
By employing dual ultrasonic flow meters and rectifiers in high-pressure natural gas stations, airflow swirl and eddies are eliminated. Combined with data fusion algorithms, the problems of insufficient accuracy and high failure rate of flow metering systems are solved, achieving high-precision and reliable flow metering.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN NATURAL GAS HIGH VOLTAGE TUBE MESHWORK CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional high-pressure natural gas station flow metering systems suffer from insufficient accuracy, high failure rate, and high maintenance costs. In particular, the reading error is large when the flow rate changes abruptly, and the existing system does not have a rectifier, so the error cannot be identified by comparison.
By employing dual ultrasonic flow meters and eliminating airflow swirl and eddies through a series rectifier and straight pipe section, combined with data fusion algorithm and dynamic error compensation model, real-time comparison and optimization of dual flow meter data is achieved.
It improves the accuracy and reliability of flow metering at high-pressure natural gas stations, reduces errors and failure rates, and lowers maintenance costs.
Smart Images
Figure CN224516538U_ABST
Abstract
Claims
1. A high accuracy flow metering system suitable for use in a high pressure natural gas field station, characterized by: The system includes a base, a first high-pressure gas tank, two first inlet pipes at the front of the first high-pressure gas tank, two first outlet pipes at the rear of the first high-pressure gas tank, a manual ball valve connected to the rear end of each first outlet pipe, a filter tank connected to the rear end of each manual ball valve, a first electric ball valve connected to the outlet end of each filter tank, a second high-pressure gas tank connected to the outlet end of each first electric ball valve, two second outlet pipes at the rear of each second outlet pipe, a shut-off valve connected to the rear end of each shut-off valve, a first rectifier connected to the rear end of each first rectifier, a first straight pipe section connected to the rear end of each first straight pipe section, a first ultrasonic flow meter connected to the rear end of each first straight pipe section, a second rectifier connected to the rear end of each first ultrasonic flow meter, a second straight pipe section connected to the rear end of each second straight pipe section, a second ultrasonic flow meter connected to the rear end of each second ultrasonic flow meter, a pressure reducing valve connected to the rear end of each pressure reducing valve, a second electric ball valve connected to the rear end of each second electric ball valve, and a low-pressure gas tank connected to the rear end of each second electric ball valve.
2. The high accuracy flow metering system suitable for high pressure natural gas field stations according to claim 1, characterized in that: The first high-pressure gas tank has two first air inlet pipes and two first air outlet pipes that are symmetrically arranged.
3. The high accuracy flow metering system suitable for use in high pressure natural gas field stations of claim 1, characterized in that: The second high-pressure gas tank is equipped with two second air inlet pipes, and the two second air inlet pipes and two second air outlet pipes of the second high-pressure gas tank are symmetrically arranged.
4. The high accuracy flow metering system suitable for use in high pressure natural gas field stations of claim 1, characterized in that: The low-pressure gas tank is equipped with two third air inlet pipes and two third air outlet pipes, which are symmetrically arranged.
5. The high accuracy flow metering system suitable for use in high pressure natural gas field stations of claim 1, characterized in that: The filter canister is cylindrical, and the top of the filter canister is covered.
6. The high accuracy flow metering system suitable for use in high pressure natural gas field stations of claim 1, characterized in that: The shut-off valve is an electromagnetic shut-off valve.
7. The high accuracy flow metering system suitable for use in high pressure natural gas field stations of claim 1, characterized in that: Both the first and second rectifiers are tube-type rectifiers.
8. The high accuracy flow metering system suitable for use in high pressure natural gas field stations of claim 1, characterized in that: The length of the first straight pipe section is more than ten times the inner diameter of the first straight pipe section, and the length of the second straight pipe section is more than five times the inner diameter of the second straight pipe section.
9. The high accuracy flow metering system suitable for use in high pressure natural gas field stations of claim 1, characterized in that: The tops of the first high-pressure gas tank, the second high-pressure gas tank, and the low-pressure gas tank are all equipped with pressure gauges and temperature gauges.
10. The high accuracy flow metering system suitable for use in high pressure natural gas field stations of claim 1, characterized in that: Both the first and second straight pipe sections are equipped with pressure gauges and temperature gauges at the top of the pipe.