Mobile unit and method for continuously monitoring flowing cooling water

Patent metadata

Field	Value
Publication number	US-12117433-B2
Application number	US-201917292833-A
Country	US
Kind code	B2
Filing date	Nov 11, 2019
Priority date	Nov 12, 2018
Publication date	Oct 15, 2024
Grant date	Oct 15, 2024

Abstract

A continuous mobile monitoring unit of a flow of cooling water includes a means to extract a flow of cooling water, means to analyze a plurality of parameters of the cooling water by means of diverse analytical techniques, generating results relating to each one of the parameters analyzed, and means to return the flow of cooling water to the cooling system. In addition, a method of continuous monitoring of the flow of cooling water includes the stages of: extracting a flow of cooling water, analyzing a plurality of parameters of the cooling water by means of diverse analytical techniques, generating results relating to each one of the parameters analyzed, and returning the cooling water to the cooling system.

First claim

The invention claimed is:

1. A mobile monitoring unit of flowing cooling water, comprising:
a first pump configured to extract a flow of cooling water from a closed-loop cooling system to be analyzed;
at least one tank configured to analyze a plurality of parameters of the flow of cooling water by analytical techniques, generating results in relation to each one of the parameters analyzed;
a second pump configured to return the flow of cooling water to the closed-loop cooling system after the flow has been analyzed;
a system of operation and supervision constituted by at least one:
a supply panel;
an emergency electric supply;
a programmable logic controller;
a supervisory system;
a computer; and
a modem.

2. The mobile monitoring unit of claim 1 , wherein the parameters analyzed are selected from among: loss of mass from test bodies, rates of corrosion by corrosimetric probes, free residual chlorine, total residual chlorine, dissolved oxygen, pH, oxidation-reduction potential, conductivity, turbidity, biofilm formation, and index of deposition.

3. The mobile monitoring unit of claim 1 , wherein the system of operation and supervision verifies whether the result of an analysis of each parameter of the cooling water is in conformity with a specification, and recommends a corrective action for each parameter of the cooling water falling outside the specification.

4. The mobile monitoring unit of claim 1 , comprising a system of control interconnected with, and controlling, a plurality of valves, pumps and sensors adapted to manage the mobile monitoring unit.

5. The mobile monitoring unit of claim 1 , wherein the means to tank comprises a plurality of sensors configured to detect the plurality of parameters.

6. The mobile monitoring unit of claim 1 , wherein the mobile monitoring unit is constructed in an occupiable container structure.

7. The mobile monitoring unit of claim 1 , further comprising tanks of chemical products adapted to carry out tests of performance of chemical products.

8. The mobile monitoring unit of claim 1 , wherein the cooling water is collected downstream of the closed-loop cooling system and returns to the system at a point upstream or downstream of the closed-loop cooling system.

9. The mobile monitoring unit of claim 1 , comprising at least one of: centrifugal pumps, hoses, dosing pumps of chemical products, air conditioning and bench with sink.

10. The mobile monitoring unit of claim 1 , wherein the tank comprises a multiparameter probe, wherein the multiparameter probe is adapted to measure pH, turbidity, conductivity and oxidation-reduction potential.

11. The mobile monitoring unit of claim 1 , wherein the system of operation and supervision is installed in an automation panel, wherein there is installed: a PLC, analogue and digital input and output modules, source of supply, and communication modules, wherein the PLC is adapted to receive data from amperometric or colorimetric chlorine analyzers, from ammonia analyzers, from biofilm formation analyzers, from a multiparameter probe, and from transmitters, together with an actuating signals of valves and pumps.

12. The mobile monitoring unit of claim 11 , wherein the supervisory system is adapted to receive all data made available by the PLC and data from a deposition index analyzer and from a corrosimetric probes.

13. A method of continuous monitoring of flowing cooling water, the method comprising:
extracting a flow of cooling water from a closed-loop cooling system;
analyzing a plurality of parameters of the cooling water by diverse analytical techniques generating results related to each one of the parameters analyzed; and
returning the flow of cooling water to the closed-loop cooling system.

14. The method of claim 13 , wherein the parameters analyzed are selected from among: mass loss from test bodies, corrosion rates by corrosimetric probes, free residual chlorine, total residual chlorine, dissolved oxygen, pH, oxidation-reduction potential, conductivity, turbidity, biofilm formation and index of deposition.

15. The method of claim 13 , comprising:
verifying whether the result of analyzing each parameter of the cooling water is in conformity with a specification and executing a corrective action for each parameter of the cooling water falling outside the specification, wherein each corrective action comprises an injection of a physicochemical agent into the flow of cooling water.

16. The method of claim 13 , comprising discarding a portion of collected cooling water following an execution of at least one analysis of a parameter of the cooling water.

17. The method of claim 13 , comprising measuring pH, turbidity, conductivity, and oxidation-reduction potential.

18. The method of claim 13 comprising control of an internal temperature of a mobile monitoring unit.

19. The mobile monitoring unit of claim 1 , wherein the closed-loop cooling system comprises a cooling tower.

Assignees

• Petroleo Brasileiro S A —Petrobras
• Petroleo Brasileiro Sa Petrobras

Inventors

• Pagnin Sergio
• Azevedo Veiga Andrea

Classifications

• G05D21/02

  characterised by the use of electric means · CPC title

• G01N1/14

  Suction devices, e.g. pumps; Ejector devices · CPC title

• C02F2209/36

  Biological material, e.g. enzymes or ATP · CPC title

• C02F2209/29

  Chlorine compounds · CPC title

• C02F2209/22

  O2 · CPC title