Leak detection system

• US 10,365,178 B2
• Filed: 06/28/2016
• Issued: 07/30/2019
• Est. Priority Date: 06/30/2015
• Status: Active Grant

• Current Assignee: Saint-Gobain Performance Plastics Corporation (Compagnie De Saint-Gobain)
• Original Assignee: Saint-Gobain Performance Plastics Corporation (Compagnie De Saint-Gobain)
• Inventors: Ling, Gerald H., Ding, Jian L., Clark, Sarah L., Braun, Paul
• Primary Examiner(s): Huls, Natalie
• Assistant Examiner(s): Young, Monica S
• Application Number:
  US15/194,850
• Publication Number:
  US 20170003192A1
• Time in Patent Office: 1,127 Days
• Field of Search: 73 405, 73 40
• CPC Class Codes: G01M 3/045 with electrical detection means
• CPC Class Codes: G01M 3/165 by means of cables or similar elongated devices, e.g. tapes

Abstract

A leak detection system including a sensor having a first condition when dry and a second condition when wet; a communication device operatively coupled to the sensor; and an attachment element adapted to attach the leak detection system to an area for monitoring fluid leakage, wherein the attachment element is removable, reusable, or both.

Claims

1. A leak detection system comprising:

a sensor having a first condition when dry and a second condition when wet;

a communication device operatively coupled to the sensor;

an attachment element adapted to attach the leak detection system to an area for monitoring fluid leakage, wherein the attachment element is removable, reusable, or both, wherein the sensor comprises a detection element comprising an electrical circuit, and wherein the electrical circuit comprises a wire having a plurality of fingers; and

a substrate, wherein the detection element is in communication with the substrate, wherein the substrate is adapted to change between a first size when dry and a second size when wet in response to fluid contact, the first and second sizes being different from one another, and wherein the plurality of fingers are adapted so that a conductive fluid will bridge a gap between the plurality of fingers to create a closed circuit.

2. The leak detection system of claim 1, wherein at least a portion of the substrate comprises a temperature reactive material adapted to change in temperature upon contact with fluid.

3. The leak detection system of claim 1, wherein the detection element further comprises a first element disposed at a first location of the substrate and a second element disposed at a second location of the substrate, wherein the first and second elements are separated by a distance, D_D, as measured in the dry state and a distance, D_W, as measured in the wet state, and wherein D_D is different than D_W.

4. The leak detection system of claim 1, wherein at least a portion of the detection element is embedded in the attachment element such that at least a portion of the detection element is not visible from an outer surface of the substrate.

5. The leak detection system of claim 1, wherein the attachment element is removably engageable with the area for monitoring fluid leakage.

6. The leak detection system of claim 1, wherein the conductive fluid closing the circuit indicates the second condition.

7. The fluid system of claim 1, wherein the first size is smaller than the second size.

8. The fluid system of claim 1, wherein at least a portion of the substrate comprises an expandable material adapted to expand upon contact with fluid.

9. A fluid system comprising:

an equipment having a fluid; and

a leak detection system attached to the equipment, the leak detection system comprising;

a sensor having a first condition when dry and a second condition when wet;

a communication device operatively coupled to the sensor and adapted to send a signal to a receiving device when the sensor senses a fluid leakage;

an attachment element adapted to attach the leak detection system to an area for monitoring fluid leakage, wherein the sensor comprises a detection element comprising an electrical circuit, and wherein the electrical circuit comprises a wire having a plurality of fingers; and

a substrate, wherein the detection element is in communication with the substrate, and wherein the substrate is adapted to change between a first size when dry and a second size when wet in response to fluid contact, the first and second sizes being different from one another, and wherein the plurality of fingers are adapted so that a conductive fluid will bridge a gap between the plurality of fingers to create a closed circuit.

10. The fluid system of claim 9, wherein at least a portion of the substrate comprises a temperature reactive material adapted to change in temperature upon contact with fluid.

11. The fluid system of claim 9, wherein the detection element further comprises a first element disposed at a first location of the substrate and a second element disposed at a second location of the substrate, wherein the first and second elements are separated by a distance, D_D, as measured in the dry state and a distance, D_W, as measured in the wet state, and wherein D_D is different than D_W.

12. The fluid system of claim 9, wherein at least a portion of the detection element is embedded in the attachment element such that at least a portion of the detection element is not visible from an outer surface of the substrate.

13. The fluid system of claim 9, wherein the substrate is flexible.

14. The fluid system of claim 9, wherein the leak detection system further comprises:

an attachment element adapted to attach the leak detection system to an area for monitoring fluid leakage.

15. The fluid system of claim 9, wherein the leak detection system is part of a leak detection array.

16. The fluid system of claim 15, wherein the leak detection array comprises a plurality of leak detection systems.

17. The fluid system of claim 9, wherein the conductive fluid closing the circuit indicates the second condition.

18. The fluid system of claim 9, wherein the first size is smaller than the second size.

19. The leak detection system of claim 9, wherein at least a portion of the substrate comprises an expandable material adapted to expand upon contact with fluid.

20. The fluid system of claim 9, wherein at least a portion of the substrate comprises a temperature reactive material adapted to change in temperature upon contact with fluid.