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Built in gas flow meter and temperature pressure compensation transmission method

A gas flowmeter, built-in technology, applied in the direction of liquid/fluid solid measurement, volume/mass flow generated by detecting the dynamic effect of fluid flow, mechanical effect, etc., can solve the problem of affecting the overall technical performance and appearance quality of the product, reliability Problems such as inability to guarantee safety and accuracy, inconvenient packaging and transportation, etc., achieve the effect of maintenance-free overall technical quality, enhanced anti-interference ability, and convenient transportation

Active Publication Date: 2004-03-03
上海埃科燃气测控设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are as follows: firstly, the pressure-taking port, temperature-measuring port, pressure sensor, temperature sensor, explosion-proof head, explosion-proof casing, cables, etc. are installed outside the flowmeter casing, not only the components are easily aging and damaged, but also easily damaged Others are damaged, bringing many unsafe factors to users, which is a headache for users and gas management departments; the second is because of pressure-taking ports, temperature-measuring ports, pressure sensors, temperature sensors, explosion-proof heads, explosion-proof casings, cables, etc. Installed outside the flowmeter housing, it cannot effectively shield the interference of other signals such as external magnetic fields, and its anti-interference ability is poor. After the transmitted signal is interfered by external strong wireless signals and magnetic fields, its reliability and accuracy cannot be guaranteed. So far, no solution has been found; third, the volume is large, not only inconvenient for users to install and use, but also extremely inconvenient for manufacturers to pack and transport; fourth, there are many parts, which not only cost a lot of manufacturing, but also directly affect the overall technical performance and appearance of the product quality

Method used

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  • Built in gas flow meter and temperature pressure compensation transmission method
  • Built in gas flow meter and temperature pressure compensation transmission method
  • Built in gas flow meter and temperature pressure compensation transmission method

Examples

Experimental program
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Effect test

Embodiment 1

[0011] Embodiment 1: with reference to attached figure 1 and figure 2 . figure 1 and figure 2 Involved in the gas waist wheel flowmeter. The flowmeter includes a fixedly connected flowmeter body 2, a flowmeter partition 3, a flowmeter end cover 4 and a flowmeter cover 9, and the magnetic induction flow signal recorded in the existing patent technology (01253920.1) is removed from the side of the flowmeter end cover. In addition to the output mechanism 6, two passages 11 with O-rings 12 sealing ports are provided at appropriate positions, and the other end of the passage 11 is provided with a threaded sealing port, and pressure sensors (or pressure transmitters) 5 are installed respectively. And temperature sensor (or temperature transmitter) 8, flow signal, pressure signal and temperature signal are sent directly to the microcomputer digital display 10 (also can design For signal remote transmission, processing, reading). A temperature sensor, a pressure signal sampling...

Embodiment 2

[0013] Embodiment 2: with reference to attached image 3 . Built-in gas flowmeter, the background technology is a gas waist wheel flowmeter or a gas turbine flowmeter, the body is provided with a temperature sensor 8, a pressure signal transmission gas film port 13, a pressure signal sampling port 14 and a pressure signal sampling port matching The pressure sensor 5, the signal transmission line 7 of the pressure sensor and the temperature sensor are located in the body and directly sent to the digital display 10 communicated with the body. The pressure of the gas medium acts on the pressure transmission gas film port 13, and the force deformation of the gas film located on the gas film port directly acts on the incompressible oil, and the oil acts on the sensor located at the sampling port of the pressure sensor to achieve the purpose of pressure sampling .

Embodiment 3

[0014] Embodiment 3: with reference to attached Figure 4 . Mainly used in gas turbines and other gas flow meters. The pressure, temperature sensor (transmitter) and the flow sensor in the embodiment 1 are installed in the cover 9 outside the wall of the flow meter body 2 channels, and the flow sensor receives the flow signal sent by the impeller or other flow signaling mechanism , At the same time, the pressure and temperature sensors measure the pressure and temperature values ​​of the fluid to achieve the same purpose as in Example 1.

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Abstract

A built-in gas flowmeter has the sensors for acquiring the temp compensation signal and pressure compensation signal, and the both signals are transmitted to digital display. Its advantages are good protection to its parts and effective electromagnetic fielding.

Description

Technical field: [0001] The invention relates to a gas flowmeter, in particular to a gas waist wheel flowmeter and a gas turbine flowmeter, and belongs to the field of gas flowmeter manufacturing. Background technique: [0002] It is well known that the density of all gases, including natural gas and city gas, will change with the change of its pressure and temperature. According to this physical characteristic, in order to accurately measure the flow through the pipeline, especially for the measurement of trade settlement, and to protect the interests of both consumers and producers, it is necessary to measure the temperature of the medium while measuring the flow value And the pressure value, through calculation to get the real flow value of the medium flowing through the pipeline - "standard condition flow", referred to as standard condition flow. Although the gas waist wheel flowmeters and gas turbine flowmeters currently on the market have realized the "standard state ...

Claims

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Application Information

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IPC IPC(8): G01F1/32G01F1/50G01F15/04
Inventor 胡永成林侠民朱思惠
Owner 上海埃科燃气测控设备有限公司
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