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Self-checking flowmeter and self-checking method thereof

A technology of flowmeter and flow data, applied in indirect mass flowmeter, mass flow measuring device, testing/calibrating volume flow, etc., can solve the problems of lack of self-checking means and potential safety hazards of pulverized coal flowmeter

Active Publication Date: 2021-08-20
孚洛泰(重庆)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects in the prior art, the self-inspection flowmeter and the self-inspection method provided by the present invention solve the technical problem that the existing pulverized coal flowmeter lacks self-inspection means and easily causes potential safety hazards

Method used

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  • Self-checking flowmeter and self-checking method thereof
  • Self-checking flowmeter and self-checking method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] see Figure 1-2 , A self-checking flowmeter provided by the present invention includes a pipe body 1, one end of the pipe body 1 is fixedly connected with a first flange 11, and the other end of the pipe body 1 is threadedly connected with a second flange 12. The pipe body 1 is connected to the conveying pipeline through flanges at both ends, and the detachable connection between the second flange 12 and the pipe body 1 is provided to facilitate the installation of bearings, and a retaining ring is provided for positioning the bearings. The outer circumference of the pipe body 1 is provided with a magnetic ring 2 through a bearing sleeve, and the magnetic ring 2 includes a first ring body 21 and a second ring body 22, and the first ring body 21 is provided with a The electromagnetic wave transmitting end 211 , the second ring body 22 is provided with an electromagnetic wave receiving end 221 facing the first ring body 21 . The outer wall of the tube body 1 is also prov...

Embodiment 2

[0041] This embodiment is a further improvement on Embodiment 1, please refer to figure 1 , the outer circumference of the pipe body 1 is provided with an annular limiting groove 13, and the bearing is composed of two semicircular bearings spliced ​​together, and the bearing is embedded in the limiting groove 13. Since the limit groove 13 is provided on the outer periphery of the pipe body 1 and the splicing method of semicircular bearings is adopted, the second flange 12 can also be provided integrally with the pipe body 1 to make the structure of the pipe body 1 stronger.

[0042] As a further improvement on the above scheme, see image 3 , The inner wall of the first ring body 21 is provided with a partition 212, and the partition 212 is fixedly connected with the outer ring of the bearing through screws. That is to say, it is necessary to thicken the outer ring of the bearing to facilitate the opening of threaded holes in the outer ring.

Embodiment 3

[0044] As a further improvement to the first and second embodiments above, there are two magnetic rings 2 . Each magnetic ring 2 is correspondingly provided with a set of rotation driving mechanism, so that the two magnetic rings 2 can rotate independently. On the one hand, mutual inspection is carried out through two magnetic rings 2, that is, by comparing the flow data measured by the two magnetic rings 2 at the same time, it is intuitively judged whether there is a detection failure of the magnetic ring 2, so as to judge the rotation switching of the driving magnetic ring 2 to the timing of the self-check position, without taking the operation of self-check at a preset time interval. If the difference between the two sets of flow data is greater than 2%, it indicates that at least one magnetic ring 2 has a detection failure, that is, it switches to the self-inspection position through its corresponding rotating drive mechanism, and performs self-inspection through the self-...

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Abstract

The invention discloses a self-checking flowmeter. The self-checking flowmeter comprises a pipe body, wherein one end of the pipe body is fixedly connected with a first flange, and the other end of the pipe body is in threaded connection with a second flange; the periphery of the tube body is sleeved with a magnetic ring through a bearing, the magnetic ring comprises a first ring body and a second ring body, the first ring body is provided with an electromagnetic wave transmitting end, and the second ring body is provided with an electromagnetic wave receiving end; a filling chamber and a rotary driving mechanism are further arranged on the outer wall of the pipe body, and the rotary driving mechanism is in transmission connection with the magnetic ring, so the arrangement position of the magnetic ring at least comprises a detection position and a self-detection position; when the magnetic ring is located at the detection position, the filling chamber is located on the outer side of a connecting line of the first ring body and the second ring body; when the magnetic ring is located at the self-checking position, the connecting line of the first ring body and the second ring body penetrates through the filling chamber. The filling chamber is filled with a preset amount of pulverized coal, after the magnetic ring works at the detection position for a preset time, the magnetic ring is switched to the self-detection position through the rotary driving mechanism, and whether the flow meter has a detection fault or not is judged in an auxiliary mode by comparing the difference between the two detection results.

Description

technical field [0001] The invention relates to the field of pulverized coal flowmeters, in particular to a self-checking flowmeter and a self-checking method thereof. Background technique [0002] The online detection technology of industrial powder / particle flow usually adopts non-contact measurement, mainly including: nuclear ray method, electrostatic charge method, capacitance method, electromagnetic wave transmission method, etc. [0003] Our existing pulverized coal flowmeter adopts the electromagnetic wave transmission method. It measures the density and velocity of pulverized coal by means of electromagnetic wave transmission, and calculates the mass flow rate of pulverized coal by multiplying velocity by density by cross-sectional area. For density measurement, an electromagnetic wave transmitter is arranged on one side of the pipeline, and a receiver is arranged on the other side. After the electromagnetic wave emitted by the transmitter passes through the pulveri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/86G01F25/00
CPCG01F1/86G01F25/10
Inventor 白茂森白华蓉
Owner 孚洛泰(重庆)科技有限公司