TH4196B - Process and equipment used to measure the velocity of injection from the stabilizer tank. - Google Patents

Abstract

The velocity of the fluid flow is like the flow being injected from the stabilizer tank of a paper machine. It was measured using a correlation of an a.c current signal generated by a pair of light beams. And is obtained by a pair of photodiode Light is born from the same source. Is from an incandescent light bulb And is transmitted by a two-pronged optical fiber Which is installed above the injection stream And away from each other in the direction of the flow, the a.c signal is filtered off the low frequency segment before expanding. And further analyzed by a spectrum analyzer

Claims (1)

1. A device for measuring the velocity of the liquid stream injected from the stabilizer tank. It consists of: a variable intensity light source that is mounted close to the fluid stream for producing light in such a way that the velocity of that current can be measured. The first forked optical fiber connection between the light source and the conductive liquid stream between the light source and the liquid stream. The first optical sensing element, located close to the light source, detects the light that is illuminated by the light source and is directed through the first link and reflected by the fluid back through the connection. First such The first signal generator, which is electrically connected to the first light sensing element. To generate the first electrical signal proportional to that reflected light To the first detection part The optical connection is the second forked optical fiber between the light source and the liquid stream. The second such connection is on the destination side. Compared with the first connection to guide light through the second interface. Between the said light source and the liquid stream. The second light sensor, located close to the light source, detects the light generated by the light source and is directed through that second interface. And is reflected from the fluid at the end of the current back through the second connection. The second signal generator, which is electrically connected to the second light sensing element. To generate a second electrical signal proportional to the said light reflected back to the second sensing part. A filter that is connected to the aforementioned first and second signal generators to filter the elements of the aforementioned first and second signals below the specified frequency. An extension that is attached to such a filter for amplifying the first and second pre-filtered signals. An extensible and operable analysis segment for the mutual relation of the AC component of the first and second amplified signal to obtain an output that represents the velocity of the liquid current. Adjustable panels that connect to the aforementioned first and second connections for Allows adjustment of the distance between the first and second connection. And allow the horizontal deflection of such first and second interfaces in such a way that optimum device sensitivity and any inconsistencies Of the connecting part relative to the direction of the current flow may be compensated, and the first and second connected end, whose ends are aligned with the current surface to form the first and second luminous points respectively on the surface. Of stream The point extends in the diagonal to the direction of current flow in such a way that the misalignment of the point. Compared with the aforementioned flow direction, it creates an equal surface area. This means that the first and second signals are equal in such a way that the first and second signals are equal. 2. The device is stated in claim 1, where the part of the light source is a type of light bulb. There is a filament 3. The device is stated in claim 1, where the first and second photodiode sections include the first and second photodiode. Which the first photodiode was connected by light (light-coupled) is with the first connection. The second photodiode is optical-coupled to the second interconnection 4. The device is stated in claim 1 where such an adjustable fixture allows misalignment of misalignment. Set up The first and second such interfaces 5. Equipment specified in claim 1 where such adjustable mounts allow the clearance of the first and second interfaces as follows. 6. The equipment specified in claim 1 includes: a preliminary amplifier connected between the first and second optical detectors and the said filter. In claim 1, the section for the analysis consists of a FFT ubiquitous two-channel spectrum analyzer (FFT ubiquitous two-channel spectrum analyzer). 8. The equipment is described in claim 1. This includes the extension-attached storage to collect information obtained from the first and second such amplified signals. 9. The device is identified in claim 1, where the interface is. The first includes the first tip. The second end and the third end The first end is placed next to the fluid stream, the second near the first optical sensing element. And the third end will be close to the light source part The second connection includes the first. The second end and the third end The first end of the connection is aligned with the liquid stream at its end location. And the current end relative to the first end of the first connection The second end of the second connection is located next to the second optical sensor. And the third end of the second connection is located near the light source part 1 0. The device is stated in Clause 9, where the part for analysis is attached to the said extension to determine. The duration of the delay between the ac elements of the first and second electrical signal by comparing the relative function 1. 1.The equipment is stated in claim 10, where the section for the aforementioned analysis also contains: a spectroscopic analyzer which can be operated according to the equation (chemical formula) in which fA (t) and fB (t). ) Refers to the AC component produced through the first and second coupling, respectively, P is a predetermined integral grade (chemical formula) as the delay period between fA (t) and fB (t) and RAB (t). ) Is the result of the relationship between each other And has the highest value at (chemical formula)