3-D sensorless conversion method and apparatus for pump differential pressure and flow
US-10119545-B2 · Nov 6, 2018 · US
Direct numeric affinity multistage pumps sensorless converter
US10662954B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10662954-B2 |
| Application number | US-201715604990-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 25, 2017 |
| Priority date | May 26, 2016 |
| Publication date | May 26, 2020 |
| Grant date | May 26, 2020 |
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Abstract
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Apparatus, including a pump system controller, features a signal processor or processing module configured at least to: receive signaling containing information about pump differential pressure, flow rate and corresponding power data at motor maximum speed published by pump manufacturers, as well as instant motor power and speed, for a system of pumps arranged in a multiple pump configuration; and determine corresponding signaling containing information about instant pump differential pressure and flow rate for the system of pumps arranged in the multiple pump configuration using a combined affinity equation and numerical interpolation algorithm, based upon the signaling received.
First claim
Opening claim text (preview).
What we claim is: 1. A system, comprising: pumps arranged in a multiple pump configuration, each pump being configured to operate at a respective instant motor power and speed; and a controller having a signal processor or processing module configured at least to: receive signaling containing information about pump differential pressure, flow rate and corresponding power data at motor maximum speed published by manufacturers of the pumps, as well as the respective instant motor power and speed for the pumps; and determine control signaling containing information about instant pump differential pressure and flow rate using a combined affinity equation and numerical interpolation algorithm to control the pumps, based upon the signaling received. 2. A system according to claim 1 , wherein the signal processor or processing module is configured to determine the corresponding signaling by implementing the combined affinity equation and numerical interpolation algorithm as follows: obtaining a corresponding maximum power at the pump's maximum speed with respect to the instant motor power and speed parameters using a power affinity equation; obtaining corresponding pump differential pressure and flow rate with respect to the corresponding maximum power at the pump's maximum speed using direct numerical interpolation; and determining the instant pump differential pressure and flow rate with respect to the instant motor speed and power by using pressure and flow affinity equations. 3. A system according to claim 2 , wherein the signal processor or processing module is configured to determine the instant pump differential pressure and flow rate by implementing the combined affinity equation and numerical interpolation algorithm and using numerical computation procedures as follows: Q ( n , w ) = ( n n ma x ) · q _ ( n ma x , W i , Q i , w ^ ( n , w ) ) , ( 1 ) P ( n , w ) = ( n n ma x ) 2 · p _ ( n ma x , W i , P i , w ^ ( n
Assignees
Inventors
Classifications
Regulating by delivery pressure · CPC title
Installation or systems with two or more pumps, wherein the flow path through the stages can be changed, e.g. series-parallel · CPC title
Rotational speed · CPC title
- F04D15/029Primary
for pumps operating in parallel · CPC title
Flow through the pump · CPC title
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- What does patent US10662954B2 cover?
- Apparatus, including a pump system controller, features a signal processor or processing module configured at least to: receive signaling containing information about pump differential pressure, flow rate and corresponding power data at motor maximum speed published by pump manufacturers, as well as instant motor power and speed, for a system of pumps arranged in a multiple pump configuration; …
- Who is the assignee on this patent?
- Fluid Handling Llc
- What technology area does this patent fall under?
- Primary CPC classification F04D15/029. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue May 26 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).