Fluid delivery system health monitoring systems and methods

Patent metadata

Field	Value
Publication number	US-11181111-B2
Application number	US-201916286007-A
Country	US
Kind code	B2
Filing date	Feb 26, 2019
Priority date	Feb 27, 2018
Publication date	Nov 23, 2021
Grant date	Nov 23, 2021

Abstract

A fluid supply system includes a fluid delivery system, a sensor positioned to acquire data regarding an operating characteristic and/or a component characteristic of the fluid delivery system, and a monitoring system coupled to the sensor. The fluid delivery system includes a pump having an inlet configured to receive a fluid, an outlet configured to provide a pressurized fluid to a fluid output, a housing defining a chamber that couples the inlet to the outlet, an impeller disposed within the chamber, and an input coupled to the impeller. The input is configured to facilitate driving the impeller to pressurize the fluid received at the inlet to generate the pressurized fluid within the chamber. The monitoring system is configured to determine a health level of a component of the fluid delivery system based on the data and provide a notification in response to the health level not satisfying a threshold.

First claim

The invention claimed is:

1. A fluid supply system for a fire apparatus, the fluid supply system comprising:
a fluid delivery system comprising:
a pump including:
an inlet configured to receive a fluid from a fluid source;
an outlet configured to a provide pressurized fluid to a fluid output system;
a housing defining an interior chamber that couples the inlet to the outlet;
an impeller disposed within the interior chamber;
an input coupled to the impeller, wherein the input is configured to facilitate driving the impeller to pressurize the fluid received at the inlet to generate the pressurized fluid within the interior chamber; and
at least one of (i) a first resilient element coupled to the housing and (ii) a second resilient element coupled to the impeller, the at least one of the first resilient element and the second resilient element positioned to prevent fluid leakage across the impeller from the interior chamber back to the inlet;

an ultrasonic sensor positioned to transmit sound waves toward the at least one of the first resilient element and the second resilient element and thereby acquire ultrasound data to facilitate detecting the formation of a leakage path between at least one of (i) the impeller and the first resilient element, (ii) the housing and the second resilient element, and (iii) the first resilient element and the second resilient element; and
a monitoring system coupled to the ultrasonic sensor, the monitoring system configured to:
detect the leakage path based on the ultrasound data; and
provide a notification in response to a size of the leakage path exceeding a threshold size.

2. A fluid supply system for a fire apparatus, the fluid supply system comprising:
a fluid delivery system comprising:
a pump including:
an inlet configured to receive a fluid from a fluid source;
an outlet configured to a provide pressurized fluid to a fluid output system;
a housing defining an interior chamber that couples the inlet to the outlet;
an impeller disposed within the interior chamber;
an input coupled to the impeller, wherein the input is configured to facilitate driving the impeller to pressurize the fluid received at the inlet to generate the pressurized fluid within the interior chamber; and
at least one of (i) a first resilient element coupled to the housing and (ii) a second resilient element coupled to the impeller, the at least one of the first resilient element and the second resilient element positioned to prevent fluid leakage across the impeller from the interior chamber back to the inlet;

a first pressure sensor positioned to acquire pressure data regarding a first pressure of the fluid on an inlet side of the impeller, within the housing;
a second pressure sensor positioned to acquire pressure data regarding a second pressure of the pressurized fluid on an outlet side of the impeller, within the housing;
a third pressure sensor positioned to acquire pressure data regarding a third pressure of the fluid at the inlet of the housing; and
a fourth pressure sensor positioned to acquire pressure data regarding a fourth pressure of the pressurized fluid at the outlet of the housing; and
a monitoring system coupled to the first pressure sensor, the second pressure sensor, the third pressure sensor, and the fourth pressure sensor, the monitoring system configured to:
determine a first pressure differential across the impeller based on the first pressure and the second pressure;
determine a second pressure differential across the pump based on the third pressure and the fourth pressure; and
provide a notification in response to the first pressure differential and the second pressure differential deviating by less than a threshold amount.

3. A fluid supply system for a fire apparatus, the fluid supply system comprising:
a fluid delivery system comprising:
a pump including:
an inlet configured to receive a fluid from a fluid source;
an outlet configured to a provide pressurized fluid to a fluid output system;
a housing defining an interior chamber that couples the inlet to the outlet;
an impeller disposed within the interior chamber; and
an input coupled to the impeller, wherein the input is configured to facilitate driving the impeller to pressurize the fluid received at the inlet to generate the pressurized fluid within the interior chamber;

a sensor positioned to acquire data regarding at least one of an operating characteristic and a component characteristic of the fluid delivery system; and
a monitoring system coupled to the sensor, the monitoring system configured to:
determine a health level of one or more components of the fluid delivery system based on the data; and
provide a notification in response to the health level not satisfying a threshold:
wherein the monitoring system is configured to perform a dead-head health test to determine the health level of the pump; and
wherein, to perform the dead-head health test, the monitoring system is configured to:
operate the pump at a predetermined output flow rate and a predetermined speed;
dead-head the pump such that the predetermined output flow rate decreases to at least a threshold level while maintaining the predetermined speed;
determine a dead-head pressure in response to dead-heading the pump;
determine a pressure difference between the dead-head pressure and a predetermined dead-head pressure;
compare the pressure difference to a predetermined pressure difference; and
provide the notification in response to the pressure difference being greater than the predetermined pressure difference.

4. The fluid supply system of claim 3 , wherein the monitoring system is configured to perform a dead-head baseline test on the pump to determine and store the predetermined speed, the predetermined dead-head pressure, and the predetermined pressure difference.

5. The fluid supply system of claim 4 , wherein, to perform the dead-head baseline test, the monitoring system is configured to:
operate the pump at a predetermined output pressure and the predetermined output flow rate;
determine a first speed required to achieve the predetermined output pressure and the predetermined output flow rate, wherein the first speed is the predetermined speed;
dead-head the pump a first time such that the predetermined output flow rate decreases to at least the threshold level while maintaining the first speed;
determine a first dead-head pressure in response to dead-heading the pump the first time, wherein the first dead-head pressure is the predetermined dead-head pressure;
operate the pump at the predetermined output pressure and a maximum output flow rate;
determine a second speed required to achieve the predetermined output pressure and the maximum output flow rate;
dead-head the pump a second time such that the maximum output flow rate decreases to at least the threshold level while maintaining the second speed;
determine a second dead-head pressure in response to dead-heading the pump the second time; and
determine a baseline pressure difference between the second dead-head pressure and the first dead-head pressure, wherein the baseline pressure difference is the predetermined pressure difference.

6. A method for determining health of a pump, the method comprising:
operating the pump at a predetermined output pressure and a predetermined output flow rate;
determining a first speed required to achieve the predetermined output pressure and the predetermined output flow rate;
dead-heading the pump a first time such that the predetermined output flow rate decreases to at least a threshold level while maintaining the first speed;
determining a first dead-head pressure in response to dead-heading the pump the first time;
operating the pump at the predeter

Assignees

• Oshkosh Corp

Inventors

• Linsmeier Eric R
• Woelfel John D
• Archer David W

Classifications

• A62C37/50

  Testing or indicating devices for determining the state of readiness of the equipment · CPC title

• F04D15/00 Primary

  Control, e.g. regulation, of pumps, pumping installations or systems · CPC title

• F04D1/00

  Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (adapted for pumping specific fluids F04D7/00; priming or boosting F04D9/00) · CPC title

• A62C27/00 Primary

  Fire-fighting land vehicles · CPC title

• F04D29/167

  of a centrifugal flow wheel · CPC title