Systems and methods for monitoring cathodic protection degradation

Patent metadata

Field	Value
Publication number	US-11359293-B2
Application number	US-202016805994-A
Country	US
Kind code	B2
Filing date	Mar 2, 2020
Priority date	Mar 2, 2020
Publication date	Jun 14, 2022
Grant date	Jun 14, 2022

Abstract

Systems and methods for monitoring anodic protection are disclosed. The system can include a sacrificial anode having an anode body, at least one cavity within the anode body, a conductor disposed within the at least one cavity, and electronic circuitry in communication with the conductor. The sacrificial anode can be electrically connected to a component or structure that is subject to galvanic corrosion. The cavity can be positioned such that as the anode degrades to a certain point, the conductor will contact water. In response, an alert can be provided to inform a user that the sacrificial anode needs replacement. The alert can be provided by activating a light, siren, or other device. The alert can also be sent to a mobile device or website.

First claim

What is claimed is:

1. A sacrificial anode system comprising:
an anode body;
a first cavity within the anode body;
a second cavity within the anode body, the second cavity being concentric with the first cavity;
a first conductor disposed within the first cavity;
a second conductor disposed within the second cavity; and
electronic circuitry in communication with the first conductor and the second conductor.

2. The sacrificial anode of claim 1 , wherein the electronic circuitry comprises an alert indicator in communication with a power source and with at least one of the first conductor and the second conductor.

3. The sacrificial anode of claim 2 , wherein the alert indicator comprises a light emitting diode (LED) assembly in communication with at least one of the first conductor and the second conductor.

4. The sacrificial anode of claim 1 , wherein the sacrificial anode is a passive anode.

5. The sacrificial anode of claim 1 , wherein the sacrificial anode further comprises an anode housing, wherein the anode body is disposed in the anode housing.

6. The sacrificial anode of claim 5 , wherein the anode housing comprises an attachment mechanism configured to connect to a plumbing system.

7. The sacrificial anode of claim 1 , wherein the electronic circuitry comprises a timer circuit configured to detect time of operation.

8. The sacrificial anode of claim 1 , wherein:
the second cavity has a volume that is smaller than a volume of the first cavity.

9. The sacrificial anode of claim 1 , wherein the electronic circuitry comprises a controller configured to:
detect an electrical signal flowing through the first conductor or the second conductor;
generate an alert message; and
transmit the alert message to a user device.

10. A water heater system comprising:
a combustion chamber;
an exhaust vent; and
a heat exchanger comprising:
a header, and
a series of tubes through which water passes, the heat exchanger (i) configured to transfer heat from combustion gases originating in the combustion chamber to the water passing through the series of tubes and (ii) comprising:
an inlet;
an outlet; and
a sacrificial anode assembly directly attached to the header, the sacrificial anode assembly comprising:
an anode body,
a first cavity within the anode body;
a second cavity within the anode body, the second cavity being concentric with the first cavity;
a first conductor disposed within the first cavity;
a second conductor disposed within the second cavity; and
electronic circuitry in communication with the first conductor and the second conductor.

11. The water heater system of claim 10 , wherein the sacrificial anode further comprises an anode housing, wherein the anode body is disposed in the anode housing.

12. The water heater system of claim 11 , wherein the anode housing comprises an attachment mechanism configured to connect to a portion of the header.

13. The water heater system of claim 10 , wherein the anode is a passive anode.

14. The water heater system of claim 10 , wherein the electronic circuitry comprises an alert indicator in communication with a power source and with at least one of the first conductor and the second conductor.

15. The water heater system of claim 14 , wherein the alert indicator comprises a light emitting diode (LED) assembly in communication with at least one of the first conductor and the second conductor.

16. The water heater system of claim 10 , wherein the electronic circuitry includes a timer circuit configured to detect time of operation.

17. A sacrificial anode assembly comprising:
an anode housing configured to attach to a portion of a water heating system and comprising a housing body and a housing cover;
an anode body disposed within the housing body;
a first cavity within the anode body;
a second cavity within the anode body, the second cavity being concentric with the first cavity;
a first water detection mechanism disposed within the first cavity;
a second water detection mechanism disposed within the second cavity; and
electronic circuitry in communication with the first water detection mechanism and the second water detection mechanism.

18. The sacrificial anode assembly of claim 17 , wherein at least a portion of the electronic circuitry is disposed within the housing cover.

19. The sacrificial anode assembly of claim 17 , wherein the electronic circuitry comprises a controller configured to:
detect a signal from the first water detection mechanism or the second water detection mechanism;
determine a degradation status of the anode body;
generate an alert message indicating the degradation status; and
transmit the alert message to a user device.

20. The sacrificial anode assembly of claim 17 , wherein the electronic circuitry comprises a controller configured to:
detect a signal from the first water detection mechanism or the second water detection mechanism;
determine a degradation status of the anode body;
determine a corrective action based on the degradation status; and
output a command signal to a device associated with the water heating system, the command signal including instructions for instituting the corrective action.

Assignees

• Rheem Mfg Co

Inventors

• Gullapalli Satya Kiran
• Revilla Jorge Miguel Gamboa
• Salazar Sergio Montalgo

Classifications

• G08B5/36

  using visible light sources · CPC title

• G08B21/20

  responsive to moisture · CPC title

• C23F13/10

  Electrodes characterised by the structure (C23F13/16 takes precedence) · CPC title

• G08B25/016

  Personal emergency signalling and security systems (emergency non-personal manually actuated alarm activators G08B25/12) · CPC title

• C23F13/22 Primary

  Monitoring arrangements therefor · CPC title