A system and method for real-time monitoring of hydrogen conductivity of condensate water

Abstract

The application discloses a hydrogen conductivity real-time monitoring system and method for condensate water, which comprises a high-temperature heat exchanger, an ultrasonic degassing device, a constant-temperature device, a hydrogen type ion exchange column and an on-line measuring device.

Description

Technical Field

[0001] This invention belongs to the field of water quality monitoring technology, and specifically relates to a real-time monitoring system and method for hydrogen conductivity of condensate. Background Technology

[0002] Hydrogen conductivity is a key indicator reflecting the quality of steam and water in generator sets. For air-cooled units or wet-cooled units without a fine treatment system, CO2 and non-condensable gases are inevitably present in the steam and water system due to condenser vacuum leakage or condensate feedwater carryover. When measuring the hydrogen conductivity of the steam and water system, the reaction products of CO2 and the alkalizing agent, after passing through the cation exchange resin column to form H2CO3, contribute to the hydrogen conductivity. This means that the hydrogen conductivity cannot accurately reflect the content of corrosive anions (such as chloride and sulfate ions) in the steam and water, affecting the monitoring of steam and water quality and the operation of the oxygenation system, leading to the shutdown of the oxygenation equipment. Therefore, it is necessary to measure the degassed hydrogen conductivity of water to more accurately reflect the content of corrosive anions in the water.

[0003] Currently, most methods for measuring the conductivity of degassed hydrogen employ the boiling method. The boiling method uses a high-temperature water sample temperature compensation method to perform nonlinear temperature compensation on the measured water sample. This method suffers from large dispersion, which leads to uncertainty in the data and cannot meet the quality index requirement of a degassed hydrogen conductivity of less than 0.15 μS / cm. Summary of the Invention

[0004] To address the technical problems existing in the prior art, this invention provides a real-time monitoring system and method for hydrogen conductivity of condensate. Existing methods for measuring degassed hydrogen conductivity suffer from large dispersion, leading to data uncertainty and failing to meet the quality index requirement of a degassed hydrogen conductivity of less than 0.15 μS / cm.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] This invention provides a real-time monitoring system for the hydrogen conductivity of condensate, comprising a high-temperature heat exchanger, an ultrasonic degassing device, a constant temperature device, a hydrogen-type ion exchange column, an online measuring device, and a host computer arranged in sequence.

[0007] The high-temperature heat exchanger is used to heat the condensate sample water to be monitored to obtain a high-temperature sample water at a preset temperature.

[0008] The ultrasonic degassing device is used to perform ultrasonic degassing treatment on the high-temperature sample water at the preset temperature to obtain high-temperature degassed sample water.

[0009] The constant temperature device is used to cool the high-temperature degassed water sample to obtain a constant temperature water sample.

[0010] The hydrogen-type ion exchange column is used to remove impurity cations from the constant-temperature sample water to obtain impurity-free ion-free sample water.

[0011] The online measurement device is used to collect the hydrogen conductivity data of the deionized water sample in real time, obtain real-time hydrogen conductivity data, and send the real-time hydrogen conductivity data to the host computer.

[0012] The host computer is used to compare the real-time hydrogen conductivity data with a preset hydrogen conductivity threshold to obtain a water quality judgment result; and generate a warning message based on the water quality judgment result.

[0013] Furthermore, the heating source for the high-temperature heat exchanger is superheated steam from the high-temperature sampling rack.

[0014] Furthermore, the ultrasonic degassing device has a built-in ultrasonic generator; wherein the ultrasonic generator is used to output ultrasonic waves with a frequency of 20000 Hz or higher.

[0015] Furthermore, the constant temperature device is a cooling device, and the cold source of the cooling device is the recycled water drained from the manual sampling port of the low temperature sampling rack; the temperature of the constant temperature sample water is 25±2℃.

[0016] Furthermore, the online measurement device employs a hydrogen conductivity meter.

[0017] Furthermore, it also includes a database server, a data application server, and a client; the database server is connected to both the host computer and the data application server, and the client is connected to the data application server.

[0018] The host computer is also used to send real-time monitoring result information to the database server; wherein, the real-time monitoring result information includes the real-time hydrogen conductivity data, the water quality judgment result, and the warning message; the database server is used to store the real-time monitoring result information and send the real-time monitoring result information to the data application server; the client is used to obtain the real-time monitoring result information by accessing the data application server.

[0019] Furthermore, a communication switch and an application security network management system are sequentially installed between the host computer and the database server; the host computer and the communication switch are connected via a signal transmission line, the communication switch and the application security network management system are connected via Ethernet, and the application security network management system and the database server are connected via wireless secure data transmission encryption.

[0020] Furthermore, the database server and the data application server are connected via a TCP / IP network; a database firewall is deployed between the database server and the data application server; and the client communicates with the data application server using the HTTP protocol.

[0021] The present invention also provides a method for real-time monitoring of hydrogen conductivity of condensate, utilizing the aforementioned real-time monitoring system for hydrogen conductivity of condensate;

[0022] The real-time monitoring method specifically includes the following steps:

[0023] The condensate sample to be monitored is heated to obtain a high-temperature sample at a preset temperature;

[0024] The high-temperature water sample at the preset temperature is subjected to ultrasonic degassing treatment to obtain high-temperature degassed water sample;

[0025] The high-temperature degassed water sample was cooled to obtain a constant-temperature water sample;

[0026] Remove impurity cations from the constant-temperature sample water to obtain impurity-free sample water;

[0027] The hydrogen conductivity data of the deionized water sample is collected in real time to obtain real-time hydrogen conductivity data;

[0028] The real-time hydrogen conductivity data is compared with a preset hydrogen conductivity threshold to obtain a water quality assessment result; and a warning message is generated based on the water quality assessment result.

[0029] Furthermore, the real-time hydrogen conductivity data is compared with a preset hydrogen conductivity threshold to obtain a water quality assessment result; and a warning message is generated based on the water quality assessment result, as detailed below:

[0030] The real-time hydrogen conductivity data is compared with a preset hydrogen conductivity threshold; if the real-time hydrogen conductivity data is greater than or equal to the preset hydrogen conductivity threshold, the water quality of the condensate to be monitored is determined to be abnormal, and a warning message is generated.

[0031] If the real-time hydrogen conductivity data is less than the preset hydrogen conductivity threshold, then the water quality of the condensate to be monitored is determined to be normal.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0033] This invention provides a real-time monitoring system and method for the hydrogen conductivity of condensate. It utilizes a high-temperature heat exchanger to heat the condensate sample, reducing the solubility of CO2 gas and achieving initial gas removal. Secondly, an ultrasonic degassing device is used to perform ultrasonic degassing on the heated sample, achieving secondary CO2 removal and minimizing the impact of CO2 on hydrogen conductivity, thus effectively improving the accuracy of the monitoring results. Simultaneously, it meets the quality requirement of a degassed hydrogen conductivity of less than 0.15 μS / cm, enabling water quality monitoring of the condensate sample. The system has a simple structure, is easy to operate, has good safety, and is convenient to maintain.

[0034] Furthermore, the superheated steam from the high-temperature sampling rack is used as a heating source to heat the condensate sample water to be monitored; the recycled water from the manual sampling port of the low-temperature sampling rack is used as a cooling source to cool the high-temperature degassed sample water, thus achieving efficient recycling of the heat source and the cooling source, which has the advantages of energy saving and environmental protection.

[0035] Furthermore, by setting up a database server, a data application server, and a client, information interaction between users and the monitoring system can be effectively realized, facilitating data processing and verification, and enabling remote enhanced supervision and management of the unit's water quality.

[0036] Furthermore, by sequentially setting up a communication switch and application security network management system between the host computer and the database server, and deploying a database firewall between the database server and the data application server, the security and reliability of the system operation are ensured. Attached Figure Description

[0037] Figure 1 This is a structural block diagram of the real-time hydrogen conductivity monitoring system for condensate according to the present invention.

[0038] The components include: 1. High-temperature heat exchanger; 2. Ultrasonic degassing device; 3. Constant temperature device; 4. Hydrogen-type ion exchange column; 5. Online measurement device; 6. Host computer; 7. Communication switch; 8. Application security network management system; 9. Database server; 10. Data application server; 11. Database firewall; 12. Client; and 13. Ultrasonic generator. Detailed Implementation

[0039] To make the technical problems solved by the present invention, the technical solutions, and the beneficial effects clearer, the following specific embodiments provide a further detailed description of the present invention. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of the invention.

[0040] As attached Figure 1As shown, this invention provides a real-time monitoring system for the hydrogen conductivity of condensate, comprising, in sequence, a high-temperature heat exchanger 1, an ultrasonic degassing device 2, a constant temperature device 3, a hydrogen-form ion exchange column 4, an online measuring device 5, a host computer 6, a communication switch 7, an application security network management system 8, a database server 9, a data application server 10, and a client 12; wherein, the inlet end of the high-temperature heat exchanger 1 is connected to the condensate source to be measured, the outlet end of the high-temperature heat exchanger 1 is connected to the inlet end of the ultrasonic degassing device 2, the outlet end of the ultrasonic degassing device 2 is connected to the inlet end of the constant temperature device 3, the outlet end of the constant temperature device 3 is connected to the inlet end of the hydrogen-form ion exchange column 4, and the outlet end of the hydrogen-form ion exchange column 4 is connected to the inlet end of the online measuring device 5.

[0041] The online measurement device 5 is connected to the host computer 6 via a signal transmission line. The host computer 6 is connected to the communication switch 7 via a signal transmission line. The communication switch 7 is connected to the application security network management system 8 via Ethernet. The application security network management system 8 is connected to the database server 9 via wireless secure data transmission encryption. The database server 9 is connected to the data application server 10 via a TCP / IP protocol network. A database firewall 11 is deployed between the database server 9 and the data application server 10. The client 12 communicates with the data application server 10 using the HTTP protocol.

[0042] In this invention, the high-temperature heat exchanger 1 is used to heat the condensate sample water to be monitored to obtain a high-temperature sample water at a preset temperature; wherein, the heating source of the high-temperature heat exchanger 1 is superheated steam from the high-temperature sampling rack, and the preset temperature is greater than or equal to 80°C; specifically, when the condensate sample water to be monitored flows through the high-temperature heat exchanger 1, it exchanges heat with the superheated steam from the high-temperature sampling rack to obtain a high-temperature sample water at the preset temperature.

[0043] The ultrasonic degassing device 2 is used to perform ultrasonic degassing treatment on the high-temperature sample water at the preset temperature to obtain high-temperature degassed sample water; wherein, the ultrasonic degassing device 2 has a built-in ultrasonic generator 13; wherein, the ultrasonic generator 13 is used to output ultrasonic waves with a frequency of 20000 Hz or higher; the ultrasonic generator 13 converts the acoustic energy of the ultrasonic frequency source above 20000 Hz into mechanical vibration through a built-in transducer, and then outputs ultrasonic waves; the removal of CO2 from the sample water is achieved by using ultrasonic waves.

[0044] The constant temperature device 3 is used to cool the high-temperature degassed water sample to obtain a constant temperature water sample; wherein, the temperature of the constant temperature water sample is 25±2℃; the constant temperature device 3 is a cooling device, and the cold source of the cooling device is the recycled water drained from the manual sampling port of the low-temperature sampling rack; specifically, when the high-temperature degassed gas flows through the constant temperature device 3, it exchanges heat with the recycled water drained from the manual sampling port of the low-temperature sampling rack to obtain the constant temperature water sample.

[0045] The hydrogen-form ion exchange column 4 is used to remove impurity cations from the constant-temperature sample water to obtain impurity-free ion sample water; the hydrogen-form ion exchange column 4 is used to remove impurity cations from the constant-temperature sample water while retaining anions; wherein, the hydrogen-form ion exchange column 4 is a columnar organic glass tube filled with a strong acid cation exchange resin; the strong acid cation exchange resin contains strongly acidic reactive groups, such as sulfonic acid groups.

[0046] The online measuring device 5 is used to collect the hydrogen conductivity data of the deionized water sample in real time, obtain real-time hydrogen conductivity data, and send the real-time hydrogen conductivity data to the host computer 6; wherein, the online measuring device 5 is a hydrogen conductivity meter; its working principle is as follows: the water sample is first passed through a cation exchange column, the cations in the water sample are exchanged by hydrogen in the ion exchange resin, and the water sample passing through the cation exchange column retains anions and exchanged hydrogen ions, and the real-time conductivity is measured.

[0047] The host computer 6 is used to compare the real-time hydrogen conductivity data with a preset hydrogen conductivity threshold to obtain a water quality judgment result; and to generate a warning message based on the water quality judgment result; the host computer 6 is also used to send real-time monitoring result information, which is sequentially transmitted through the communication switch 7 and the application security network management system 8 to the database server 9; wherein, the real-time monitoring result information includes the real-time hydrogen conductivity data, the water quality judgment result, and the warning message; the database server 9 is used to store the real-time monitoring result information and send the real-time monitoring result information to the data application server 10; the client 12 is used to obtain the real-time monitoring result information by accessing the data application server 10.

[0048] In this invention, the host computer 6 is used to compare the real-time hydrogen conductivity data with a preset hydrogen conductivity threshold to obtain a water quality judgment result; and to generate a warning message based on the water quality judgment result, as follows:

[0049] The real-time hydrogen conductivity data CC is compared with a preset hydrogen conductivity threshold S. If the real-time hydrogen conductivity data CC is greater than or equal to the preset hydrogen conductivity threshold S, the water quality of the condensate to be monitored is determined to be abnormal, and a warning message is generated. If the real-time hydrogen conductivity data CC is less than the preset hydrogen conductivity threshold S, the water quality of the condensate to be monitored is determined to be normal. The preset hydrogen conductivity threshold S is 0.15 μS / cm.

[0050] The data application server 10 is equipped with a web server; the database firewall 11 adopts proactive defense technology, which can proactively monitor, identify, alert, and block external data attacks that bypass the enterprise network boundary protection, as well as data theft and damage from high-privilege users inside the enterprise, providing a proactive security defense measure; wherein, the enterprise network boundary includes FireWall, IDS / IPS; the high-privilege users inside the enterprise include DBAs, developers, and third-party outsourcing service providers; the client 12 is equipped with a web browser and accesses the data application server through secure access control rules, authorized accounts, and passwords.

[0051] Monitoring principle:

[0052] The real-time hydrogen conductivity monitoring system for condensate described in this invention first uses superheated steam from a high-temperature sampling rack to heat the condensate sample to achieve initial CO2 removal. Then, ultrasonic degassing removes CO2 from the heated condensate sample for secondary removal. Next, water recovered from the manual sampling port of a low-temperature sampling rack is used as a cold source to cool the degassed sample. The cooled, constant-temperature sample flows through a hydrogen-type ion exchange column and enters an online measurement device for real-time acquisition of hydrogen conductivity data. The real-time hydrogen conductivity data is transmitted to the host computer via data communication. The host computer compares the real-time hydrogen conductivity data with the preset hydrogen conductivity threshold to obtain the water quality judgment result. Based on the water quality judgment result, a warning message is generated. Simultaneously, the real-time monitoring result information is uploaded to the database server. The database server, through the network firewall settings, distributes the real-time monitoring result information to the application data server. The client accesses the data application server through secure access control rules, ensuring the security of accessing the database server while realizing remote enhanced supervision and management of the unit's water quality.

[0053] In this invention, ultrasonic degassing is used to remove CO2 from the sample water to obtain high-temperature degassed sample water. The specific degassing principle is as follows:

[0054] When high-power ultrasound is coupled into a liquid, the liquid is compressed and expanded in both high-pressure and low-pressure cycles. In the low-pressure cycle, tiny vacuum bubbles, or cavitation bubbles, are generated. These tiny vacuum bubbles grow in multiple pressure cycles. During the bubble growth cycle, dissolved gases in the liquid enter the vacuum bubbles, which then become continuously growing bubbles. Furthermore, microturbulence and liquid jets cause intense stirring and mass transfer, leading to bubble coalescence under the conditions of ultrasound generation. This unifies small dissolved bubbles with larger bubbles, which then rapidly rise to the surface of the liquid and leave the liquid, thus achieving degassing.

[0055] This invention also provides a method for real-time monitoring of the hydrogen conductivity of condensate, as detailed below:

[0056] The high-temperature heat exchanger 1 is used to heat the condensate sample to obtain a high-temperature sample at a preset temperature; the ultrasonic degassing device 2 is used to perform ultrasonic degassing on the high-temperature sample to obtain a high-temperature degassed sample; the high-temperature degassed sample is cooled using a constant temperature device 3 to obtain a constant temperature sample; impurity cations in the constant temperature sample are removed using a hydrogen-type ion exchange column 4 to obtain a de-ionized sample; and the hydrogen conductivity data of the de-ionized sample is collected in real time using an online measurement device 5 to obtain real-time hydrogen conductivity data.

[0057] The host computer 6 compares the real-time hydrogen conductivity data with a preset hydrogen conductivity threshold to obtain a water quality assessment result; and generates a warning message based on the water quality assessment result; simultaneously, the host computer 6 sends real-time monitoring result information, which is sequentially transmitted through the communication switch 7 and the application security network management system 8 to the database server 9; wherein, the real-time monitoring result information includes the real-time hydrogen conductivity data, the water quality assessment result, and the warning message; the database server 9 stores the real-time monitoring result information and sends it to the data application server 10; the user obtains the real-time monitoring result information by accessing the data application server 10 through the client 12.

[0058] The present invention describes a real-time hydrogen conductivity monitoring system and method for condensate. First, the condensate sample is heated with reheat steam from a high-temperature sampling rack. Then, CO2 is removed from the condensate sample via ultrasonic degassing. The degassed sample is cooled by water recovered from the manual sampling port of a low-temperature sampling rack, and then passed through a hydrogen-type ion exchange column before entering an online measurement device. The measured value is transmitted to a host computer via data communication. The host computer uses a water quality anomaly judgment model to determine if the water quality is abnormal, issues an alarm when an anomaly occurs, generates corresponding processing strategies, and simultaneously uploads the information to a database server. The database server, through network firewall settings, distributes the information to an application data server. Clients access the data application server using secure access control rules, account permissions, and passwords. This ensures secure access to the database server while providing accurate, complete, timely, and traceable data for the operation of the oxygenation equipment, guaranteeing normal operation under these conditions, improving operational safety and economy. Furthermore, the in-situ online monitoring method collects condensate water quality data, facilitating data processing and verification, and enabling enhanced remote monitoring and management of the unit's water quality.

[0059] The above embodiments are merely one of the implementation methods for achieving the technical solution of the present invention. The scope of protection claimed by the present invention is not limited to this embodiment, but also includes any variations, substitutions and other implementation methods that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention.

Claims

1. A real-time monitoring system for the hydrogen conductivity of condensate, characterized in that, It includes a high-temperature heat exchanger (1), an ultrasonic degassing device (2), a constant temperature device (3), a hydrogen-type ion exchange column (4), an online measurement device (5), and a host computer (6) arranged in sequence. The high-temperature heat exchanger (1) is used to heat the condensate sample water to be monitored to obtain a high-temperature sample water at a preset temperature. The ultrasonic degassing device (2) is used to perform ultrasonic degassing treatment on the high-temperature sample water at the preset temperature to obtain high-temperature degassed sample water. The constant temperature device (3) is used to cool the high-temperature degassed water sample to obtain constant temperature water sample; The hydrogen-type ion exchange column (4) is used to remove impurity cations from the constant-temperature sample water to obtain impurity-free ion sample water; The online measurement device (5) is used to collect the hydrogen conductivity data of the deionized water sample in real time, obtain real-time hydrogen conductivity data, and send the real-time hydrogen conductivity data to the host computer (6). The host computer (6) is used to compare the real-time hydrogen conductivity data with the preset hydrogen conductivity threshold to obtain the water quality judgment result; and generate a warning message based on the water quality judgment result. It also includes a database server (9), a data application server (10), and a client (12); the database server (9) is connected to the host computer (6) and the data application server (10), and the client (12) is connected to the data application server (10); Between the host computer (6) and the database server (9), a communication switch (7) and an application security network management system (8) are also arranged in sequence; the host computer (6) and the communication switch (7) are connected by a signal transmission line, the communication switch (7) and the application security network management system (8) are connected by an Ethernet, and the application security network management system (8) and the database server (9) are connected by wireless secure data transmission encryption. The database server (9) and the data application server (10) are connected via a TCP / IP protocol network; the database server (9) and the data application server (10) are equipped with a database firewall (11); the client (12) and the data application server (10) communicate via the HTTP protocol. The host computer (6) is also used to send real-time monitoring result information to the database server (9); wherein, the real-time monitoring result information includes the real-time data of hydrogen conductivity, the water quality judgment result and the warning message; the database server (9) is used to store the real-time monitoring result information and send the real-time monitoring result information to the data application server (10); the client (12) is used to obtain the real-time monitoring result information by accessing the data application server (10); The data application server (10) is equipped with a web server; the database firewall (11) adopts active defense technology, which can actively monitor, identify, alarm, and block external data attacks that bypass the enterprise network boundary protection and data theft and destruction from internal high-privilege users in real time, providing an active security defense measure; wherein, the enterprise network boundary includes FireWall, IDS\IPS; the internal high-privilege users include DBA, developers and third-party outsourcing service providers; the client (12) is equipped with a web browser and accesses the data application server through security access control rules, permission accounts and passwords.

2. The real-time monitoring system for hydrogen conductivity of condensate according to claim 1, characterized in that, The heating source of the high-temperature heat exchanger (1) is superheated steam from the high-temperature sampling rack.

3. The real-time monitoring system for hydrogen conductivity of condensate according to claim 1, characterized in that, The ultrasonic degassing device (2) has a built-in ultrasonic generator (13); wherein the ultrasonic generator (13) is used to output ultrasonic waves with a frequency of 20000HZ or higher.

4. The real-time monitoring system for hydrogen conductivity of condensate according to claim 1, characterized in that, The constant temperature device (3) is a cooling device, and the cold source of the cooling device is the recycled water drained from the manual sampling port of the low temperature sampling rack; the temperature of the constant temperature sample water is 25±2℃.

5. A real-time monitoring system for hydrogen conductivity of condensate according to claim 1, characterized in that, The online measuring device (5) is a hydrogen conductivity meter.

6. A method for real-time monitoring of hydrogen conductivity in condensate, characterized in that, The real-time hydrogen conductivity monitoring system for condensate is described in any one of claims 1-5. The real-time monitoring method specifically includes the following steps: The condensate sample to be monitored is heated to obtain a high-temperature sample at a preset temperature; The high-temperature water sample at the preset temperature is subjected to ultrasonic degassing treatment to obtain high-temperature degassed water sample; The high-temperature degassed water sample was cooled to obtain a constant-temperature water sample; Remove impurity cations from the constant-temperature sample water to obtain impurity-free sample water; The hydrogen conductivity data of the deionized water sample is collected in real time to obtain real-time hydrogen conductivity data; The real-time hydrogen conductivity data is compared with a preset hydrogen conductivity threshold to obtain a water quality assessment result; and a warning message is generated based on the water quality assessment result.

7. A method for real-time monitoring of hydrogen conductivity in condensate according to claim 6, characterized in that, The process of comparing the real-time hydrogen conductivity data with a preset hydrogen conductivity threshold to obtain a water quality assessment result, and generating a warning message based on the water quality assessment result, is as follows: The real-time hydrogen conductivity data is compared with a preset hydrogen conductivity threshold; if the real-time hydrogen conductivity data is greater than or equal to the preset hydrogen conductivity threshold, the water quality of the condensate to be monitored is determined to be abnormal, and a warning message is generated. If the real-time hydrogen conductivity data is less than the preset hydrogen conductivity threshold, then the water quality of the condensate to be monitored is determined to be normal.

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