Monitoring and controlling hydrocyclones using vibration data
First Claim
1. A hydrocyclone vibration measurement system comprising:
- a set of upper vibration sensors comprising at least one vibration sensor attached to an overflow portion of each hydrocyclone in a hydrocyclone pack, the upper vibration sensors generating a plurality of analog overflow vibration signals;
a set of lower vibration sensors comprising at least one vibration sensor attached to an underflow portion of each of the hydrocyclones in the hydrocyclone pack, the lower vibration sensors generating a plurality of analog underflow vibration signals; and
a vibration analysis system including;
an analog-to-digital converter for sampling the analog overflow vibration signals and underflow vibration signals at a fixed sampling rate and converting the analog overflow and underflow vibration signals into digital overflow and underflow vibration signals; and
one or more overall vibration processing channels for processing the digital overflow and underflow vibration signals to generate overflow and underflow scalar vibration values representing overall vibration measured at the overflow and underflow portions of the hydrocyclones in the hydrocyclone pack,wherein the vibration analysis system interfaces with a distributed control system to provide control information to the distributed control system based at least in part on one or both of the overflow scalar vibration values and the underflow scalar vibration values,wherein the control information is used by the distributed control system to implement one or more control functions comprising;
control of one or more valves to distribute flow to one or more available hydrocyclones in the hydrocyclone pack;
adjustment of a speed of one or more pumps associated with the hydrocyclone pack; and
adjustment of density of a slurry going to the hydrocyclone pack.
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Accused Products
Abstract
A hydrocyclone vibration measurement system includes an upper vibration sensor attached to the overflow of a hydrocyclone and a lower vibration sensor attached to the underflow of the hydrocyclone. A vibration analysis system includes an ADC, an overall vibration value processing channel, and one or more band pass filters. The overall vibration value processing channel generates overflow and underflow scalar vibration values representing overall vibration measured at the overflow and underflow portions of the hydrocyclone. The vibration analysis system may interface with a DCS to provide control information for controlling the hydrocyclone based on the overflow and underflow scalar vibration values.
13 Citations
29 Claims
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1. A hydrocyclone vibration measurement system comprising:
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a set of upper vibration sensors comprising at least one vibration sensor attached to an overflow portion of each hydrocyclone in a hydrocyclone pack, the upper vibration sensors generating a plurality of analog overflow vibration signals; a set of lower vibration sensors comprising at least one vibration sensor attached to an underflow portion of each of the hydrocyclones in the hydrocyclone pack, the lower vibration sensors generating a plurality of analog underflow vibration signals; and a vibration analysis system including; an analog-to-digital converter for sampling the analog overflow vibration signals and underflow vibration signals at a fixed sampling rate and converting the analog overflow and underflow vibration signals into digital overflow and underflow vibration signals; and one or more overall vibration processing channels for processing the digital overflow and underflow vibration signals to generate overflow and underflow scalar vibration values representing overall vibration measured at the overflow and underflow portions of the hydrocyclones in the hydrocyclone pack, wherein the vibration analysis system interfaces with a distributed control system to provide control information to the distributed control system based at least in part on one or both of the overflow scalar vibration values and the underflow scalar vibration values, wherein the control information is used by the distributed control system to implement one or more control functions comprising; control of one or more valves to distribute flow to one or more available hydrocyclones in the hydrocyclone pack; adjustment of a speed of one or more pumps associated with the hydrocyclone pack; and adjustment of density of a slurry going to the hydrocyclone pack. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for measuring and analyzing vibration associated with a hydrocyclone, the method comprising:
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(a) sensing vibration associated with an overflow portion of the hydrocyclone using an upper vibration sensor attached to the overflow portion; (b) the upper vibration sensor generating an analog overflow vibration signal indicative of the vibration sensed in step (a); (c) sensing vibration associated with an underflow portion of the hydrocyclone using a lower vibration sensor attached to the underflow portion; (d) the lower vibration sensor generating an analog underflow vibration signal indicative of the vibration sensed in step (c); (e) sampling the analog overflow vibration signal and underflow vibration signal at a fixed sampling rate and converting the analog overflow and underflow vibration signals into digital overflow and underflow vibration signals; (f) band pass filtering the digital overflow and underflow vibration signals to generate band pass limited digital overflow and underflow vibration signals; (g) processing the digital overflow and underflow vibration signals to generate overflow and underflow scalar vibration values representing overall vibration measured at the overflow and underflow portions of the hydrocyclone, and (h) providing control information to a distributed control system based at least in part on the overflow and underflow scalar vibration values, wherein the control information may be used by the distributed control system to control one or more functions comprising; control of one or more valves to distribute flow to the hydrocyclone; adjustment of a speed of one or more pumps associated with the hydrocyclone; and adjustment of a density of a slurry going to the hydrocyclone. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A hydrocyclone vibration measurement system comprising:
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a set of upper vibration sensors comprising at least one vibration sensor attached to an overflow portion of each hydrocyclone in a hydrocyclone pack, the upper vibration sensors generating a plurality of analog overflow vibration signals; a set of lower vibration sensors comprising at least one vibration sensor attached to an underflow portion of each of the hydrocyclones in the hydrocyclone pack, the lower vibration sensors generating a plurality of analog underflow vibration signals; a vibration analysis system including; an analog-to-digital converter for sampling the analog overflow vibration signals and underflow vibration signals at a fixed sampling rate and converting the analog overflow and underflow vibration signals into digital overflow and underflow vibration signals; one or more overall vibration processing channels for processing the digital overflow and underflow vibration signals to generate overflow and underflow scalar vibration values representing overall vibration measured at the overflow and underflow portions of the hydrocyclones in the hydrocyclone pack, the one or more overall vibration processing channels including one or more band pass filters for band pass filtering the digital overflow and underflow vibration signals to generate band pass limited digital overflow and underflow vibration signals, and a comparison module that compares one or more of the overflow scalar vibration values measured during a first time period to the underflow scalar vibration values measured during the first time period, the overflow scalar vibration values measured during the first time period to the overflow scalar vibration values measured during a second time period that is different from the first time period, the underflow scalar vibration values measured during the first time period to the underflow scalar vibration values measured during the second time period, the overflow scalar vibration values measured during the first time period to baseline overflow scalar vibration values measured during a time period when one or more of the hydrocyclones were operating in a normal condition, and the underflow scalar vibration values measured during the first time period to baseline underflow scalar vibration values measured during the time period when one or more of the hydrocyclones were operating in a normal condition, based on which the comparison module generates control information that may be is used in implementing the one or more control functions, wherein the vibration analysis system interfaces with a distributed control system to provide the control information to the distributed control system; wherein the control functions comprising;
control of one or more valves to distribute flow to one or more available hydrocyclones in the hydrocyclone pack;adjustment of a speed of one or more pumps associated with the hydrocyclone pack; and adjustment of density of a slurry going to the hydrocyclone pack.
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Specification