Portable TRT condensate water quality on-line real-time detection device

Abstract

The utility model relates to water quality detection technical field relates to a kind of portable TRT condensate water quality on-line real-time detection device;Detection device contains water storage tank, and the water inlet pipe is connected to any side surface of water storage tank by water inlet, and water inlet pipe is installed filter, water inlet solenoid valve in turn along the direction of away from water storage tank, and the bottom surface of water storage tank is connected with drain pipe by water outlet, and drain pipe is installed drain solenoid valve along the direction of away from water storage tank, and detection device still contains pH value detection sensor, Cl ‑ Value detection sensor, pH value detection sensor, Cl ‑ Value detection sensor is respectively connected with pH value detection transmitter, Cl ‑ Value detection transmitter by special cable, and the signal cable of pH value detection transmitter, Cl ‑ Value detection transmitter, water inlet solenoid valve, drain solenoid valve is electrically connected with control system;The accumulation and on-line real-time detection function of water quality to be measured can be realized, the problems of time-consuming, labor-consuming and other problems existing in water quality offline detection technology are solved.

Description

Technical Field

[0001] This utility model relates to the field of water quality testing technology, and in particular to a portable TRT condensate water quality online real-time testing device. Background Technology

[0002] The steel industry is a pillar industry of my country's national economy, playing a vital role in economic construction, social development, fiscal revenue, national defense, and stable employment. As a major steel producer in the world, my country accounts for more than 50% of the world's total steel production. As one of the manufacturing industries with the highest carbon emissions, the steel industry needs to achieve the highest conversion efficiency and labor productivity with the lowest resource and energy consumption to provide a sufficient quantity of high-quality, high-performance steel products in order to achieve the goal of carbon peaking by 2030 and carbon neutrality by 2060.

[0003] TRT (Top Gas Pressure Recovery Turbine) is a turbine device for recovering residual pressure and heat from blast furnace exhaust gas to generate electricity. Currently, the exhaust gas temperature of most blast furnaces in China is between 150℃ and 220℃. To reduce carbon emissions and smelting energy consumption, more and more steel companies are gradually adopting low-temperature smelting methods, that is, lowering the smelting temperature inside the blast furnace. This leads to a decrease in the temperature of the blast furnace exhaust gas (i.e., blast furnace gas), typically below 120℃. After the blast furnace gas passes through the blast furnace gas exhaust gas turbine power generation device for energy conversion, its temperature drops to below 50℃, causing a large amount of water in the gas to condense. The condensed water is mixed with a large number of corrosive chemical molecules in the gas, especially Cl. - The highest concentration of acidic substances forms strong acid condensate, which corrodes the moving and stationary blades of the TRT, leading to a significant reduction in the lifespan of the TRT. This is a major problem currently facing TRT generator sets in steel enterprises.

[0004] In order to obtain the specific pH value and Cl- value of TRT condensate -The content of the condensate water content allows for targeted selection and improvement of TRT blade materials or coatings. TRT suppliers require steel customers to periodically measure the condensate water quality of their TRT systems and provide the measurement reports. Current TRT condensate water quality testing is offline, involving on-site sampling and laboratory testing. This offline method is time-consuming, labor-intensive, expensive, and unsafe. The time consumption stems from the need for manual on-site sampling each time, followed by delivery to a testing institute near the steel mill, with results typically taking three to five days. The labor consumption arises from the need for manual sampling, delivery, and inspection throughout the entire process. The costs of sampling and recording are significant, as each test requires separate payment to the testing institute, and testing is typically required weekly. Furthermore, TRTs are located in hazardous areas where blast furnace gas is highly toxic; condensate sampling may result in gas leaks, posing a risk of danger and environmental pollution. For these reasons, most steel customers do not cooperate with periodic condensate quality testing, leading to severe blade corrosion problems in TRTs. Additionally, when replacing blades, suppliers lack effective condensate testing data, making it impossible to determine the appropriate blade material, causing substantial losses and inconvenience for both steel mills and TRT suppliers. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the purpose of this invention is to provide a portable TRT condensate water quality online real-time monitoring device, which monitors the water storage tank, pH value / Cl... - The system integrates a level sensor, level transmitter, inlet solenoid valve, outlet solenoid valve, explosion-proof enclosure, and control system to achieve online real-time detection and recording of TRT condensate quality, solving the problems of time-consuming, labor-intensive, costly, and unsafe offline TRT condensate quality detection.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A portable TRT condensate water quality online real-time monitoring device includes a water storage tank 1. An inlet pipe 22 is connected to any side of the water storage tank 1 via an inlet 16. A filter 9 and an inlet solenoid valve 7 are sequentially installed on the inlet pipe 22 in the direction away from the water storage tank 1. A drain pipe 23 is connected to the bottom of the water storage tank 1 via an outlet 17. A drain solenoid valve 8 is installed on the drain pipe 23. The monitoring device also includes a pH sensor 2 and a Cl... - pH value detection sensor 3, the sensing component of the pH value detection sensor 2 is installed inside the water storage tank 1 through the first hole 18 on the top surface of the water storage tank 1, the Cl -The sensing component of pH sensor 3 is installed inside the water storage tank 1 through the second hole 19 on the top surface of the water storage tank 1. The pH sensor 2 is electrically connected to the pH transmitter 4 via a dedicated cable. - Value detection sensor 3 is connected to Cl via a dedicated cable - pH value transmitter 5 is electrically connected, and the pH value transmitter 4 and Cl are connected. - The signal cables of the value detection transmitter 5, the inlet solenoid valve 7, and the drain solenoid valve 8 are electrically connected to the control system 24.

[0008] Furthermore, the detection device also includes a level transmitter 6, the sensing component of which is installed inside the water storage tank 1 through the third hole 20 on the top surface of the water storage tank 1, and the signal cable of the level transmitter 6 is electrically connected to the control system 24.

[0009] Furthermore, the detection device also includes an explosion-proof enclosure 10, a water storage tank 1, a pH value detection sensor 2, and a Cl... - 3. pH value detection sensor; 4. pH value detection transmitter; 5. Cl - The pH transmitter 5, level transmitter 6, inlet solenoid valve 7, drain solenoid valve 8, and filter 9 are all located inside the explosion-proof enclosure 10. The explosion-proof enclosure 10 has a first hole 11, a second hole 12, and a third hole 13. The inlet pipe 22 passes through the first hole 11 and is connected to the external TRT condensate water supply pipe via the inlet hand valve 14. The drain pipe 23 passes through the second hole 12 and is connected to the external TRT condensate water outlet pipe via the drain hand valve 15. The pH transmitter 4, Cl... - The signal cables of the value detection transmitter 5, the inlet solenoid valve 7, and the drain solenoid valve 8 pass through the third hole 13 and are electrically connected to the control system 24.

[0010] Furthermore, explosion-proof glass 21 is installed on any side of the explosion-proof enclosure 10.

[0011] Furthermore, the filter 9 is a Y-type or T-type filter.

[0012] Furthermore, the pH value detection sensor 2, Cl - 3. pH value detection sensor; 4. pH value detection transmitter; 5. Cl - The level transmitter 5, the liquid level transmitter 6, the inlet solenoid valve 7, and the drain solenoid valve 8 are all explosion-proof.

[0013] Furthermore, the control system 24 is any one of a programmable logic controller (PLC), a distributed control system (DCS), or a supervisory control and data acquisition and monitoring control system (SCADA).

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model integrates a water storage tank 1, a pH value detection sensor 2, and a Cl... - pH sensor 3, inlet solenoid valve 7, drain solenoid valve 8, and control system 24 are integrated together. The pH sensor 2 and Cl... - The pH sensor 3 can output standard 4-20mA pH and Cl values. - The content signal value is compatible with any PLC, DCS or SCADA system for display and recording, facilitating online real-time detection of condensate water quality without the need for on-site sampling, making it safe, convenient and maintenance-free.

[0016] 2. This utility model uses a level transmitter 6 installed in the water storage tank 1 to detect changes in the water level of the water to be tested and sends a signal to the control system 24. When the water level reaches a certain height during the water storage process, the inlet solenoid valve 7 is automatically closed. When the water level is lower than the minimum height during the drainage process, the drain solenoid valve 8 is automatically closed. This realizes the automatic control of the opening and closing of the inlet solenoid valve 7 and the drain solenoid valve 8 by the control system. It also realizes the automatic control of the remote control system 24 for water storage and drainage of the water storage tank 1. At the same time, the entire control system 24 can be operated remotely by a person in the control room, which solves the problems of time-consuming, labor-intensive, dangerous and environmentally polluting problems of existing detection methods.

[0017] 3. This utility model uses an explosion-proof enclosure 10 to house the water storage tank 1, pH value detection sensor 2, and Cl... - The detection device is protected by devices such as the level detection sensor 3, the water inlet solenoid valve 7, the drain solenoid valve 8, and the level transmitter 6 to ensure the safety of the detection device. The explosion-proof enclosure 10 is also equipped with explosion-proof resin glass 21 on the front, which is convenient for manual on-site reading at any time. The detection device is small in size and light in weight, can be carried and placed anywhere, and is easy to disassemble and install.

[0018] In summary, this utility model integrates a water storage tank 1, a pH value detection sensor 2, and a Cl... -The system integrates devices such as the level detection sensor 3 and the level transmitter 6, and through the control system 24, it completes the 24-hour online real-time automatic detection function of the detection device. This solves the problems of time-consuming, labor-intensive, costly, unsafe, and inconsistent detection data that exist in the existing offline detection technology for TRT condensate water quality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Among them: 1. Water storage tank; 2. pH value detection sensor; 3. Cl - 4. pH value detection sensor; 5. pH value detection transmitter; - 6. Level transmitter; 7. Inlet solenoid valve; 8. Drain solenoid valve; 9. Filter; 10. Explosion-proof enclosure; 11. First hole; 12. Second hole; 13. Third hole; 14. Inlet manual valve; 15. Drain manual valve; 16. Inlet; 17. Outlet; 18. First hole; 19. Second hole; 20. Third hole; 21. Explosion-proof glass; 22. Inlet pipe; 23. Drain pipe; 24. Control system. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1 The present invention will be described in further detail below.

[0022] A portable TRT condensate water quality online real-time monitoring device includes a water storage tank 1. The height of the water storage tank 1 is adjusted by an external bracket and fixed near a water supply pipe. An inlet pipe 22 is connected to any side of the water storage tank 1 through an inlet 16. A filter 9 and an inlet solenoid valve 7 are installed sequentially on the inlet pipe 22 in the direction away from the water storage tank 1. An external TRT condensate water supply pipe is connected to the inlet pipe 22 through an inlet hand valve 14. TRT condensate water enters the water storage tank 1 through the inlet pipe 22. A drain pipe 23 is connected to the bottom of the water storage tank 1 through an outlet 17. A drain solenoid valve 8 is installed on the drain pipe 23. The TRT condensate water inside the water storage tank 1 is discharged from the water storage tank 1 through the drain pipe 23. The drain pipe 23 is connected to the external TRT condensate water outlet pipe through a drain hand valve 15.

[0023] The detection device also includes a pH sensor 2 and a Cl... - pH value detection sensor 3, the sensing component of the pH value detection sensor 2 is installed inside the water storage tank 1 through the first hole 18 on the top surface of the water storage tank 1, the Cl - The sensing component of pH sensor 3 is installed inside water tank 1 through the second hole 19 on the top surface of water tank 1. When the detection device is working online, pH sensor 2 and Cl... -The sensing components of the level detection sensor 3 and the level transmitter 6 are located below the liquid surface;

[0024] The pH sensor 2 is electrically connected to the pH transmitter 4 via a dedicated cable. - Value detection sensor 3 is connected to Cl via a dedicated cable - pH value transmitter 5 is electrically connected, and the pH value transmitter 4 and Cl are connected. - The signal cables of the value detection transmitter 5, the inlet solenoid valve 7, and the drain solenoid valve 8 are electrically connected to the control system 24. The control system 24 can be a PLC (Programmable Logic Controller), a DCS (Distributed Control System, SCADA (Supervisory Control And Data Acquisition)) or other control systems.

[0025] Specifically, the detection device also includes a level transmitter 6. The sensing component of the level transmitter 6 is installed inside the water storage tank 1 through the third hole 20 on the top surface of the water storage tank 1. The signal cable of the level transmitter 6 is electrically connected to the control system 24 (such as PLC, DCS or SCADA).

[0026] Specifically, the detection device also includes an explosion-proof enclosure 10, a water storage tank 1, a pH value detection sensor 2, and a Cl... - 3. pH value detection sensor; 4. pH value detection transmitter; 5. Cl - The level transmitter 5, liquid level transmitter 6, inlet solenoid valve 7, drain solenoid valve 8, and filter 9 are all located inside the explosion-proof enclosure 10. The water storage tank 1, pH sensor 2, and Cl... - 3. pH value detection sensor; 4. pH value detection transmitter; 5. Cl - The value detection transmitter 5, level transmitter 6, inlet solenoid valve 7, drain solenoid valve 8, and filter 9 are all integrated and installed in an explosion-proof enclosure. The water storage tank 1, pH value detection transmitter 4, and Cl... - The value detection transmitter 5 is installed on the explosion-proof enclosure 10, and the entire detection device is self-contained, making it easy to carry and install on site.

[0027] The explosion-proof enclosure 10 is provided with a first hole 11, a second hole 12, and a third hole 13. The inlet pipe 22 passes through the first hole 11 from inside the explosion-proof enclosure 10 and connects to the external TRT condensate water supply pipe, specifically connected to the inlet manual valve 14 on the external TRT condensate water supply pipe. The drain pipe 23 passes through the second hole 12 from inside the explosion-proof enclosure 10 and connects to the external TRT condensate water outlet pipe, specifically connected to the drain manual valve 15 on the external TRT condensate water outlet pipe. The pH value transmitter 4 and Cl... - The signal cables of the value detection transmitter 5, level transmitter 6, water inlet solenoid valve 7, and drain solenoid valve 8 pass through the third hole 13 and are electrically connected to the control system 24 located on the explosion-proof enclosure 10.

[0028] Specifically, a resin-type explosion-proof glass 21 is installed on any side of the explosion-proof enclosure 10 to facilitate external observation of the test results and the working status of the internal equipment.

[0029] Specifically, the filter 9 is a Y-type or T-type filter used to filter impurities in the condensate and prevent impurities from settling and clogging the outlet 17 of the water storage tank for a long time.

[0030] Specifically, the pH value detection sensor 2, Cl - 3. pH value detection sensor; 4. pH value detection transmitter; 5. Cl - The level transmitter 5, liquid level transmitter 6, water inlet solenoid valve 7, water outlet solenoid valve 8, and explosion-proof enclosure 10 are all explosion-proof. The entire detection device operates in a gas area. Gas is a toxic, flammable, and explosive gas, so the electrical equipment must meet the explosion-proof requirements.

[0031] Specifically, during the installation of the detection device, the inlet valve 14 and the outlet valve 15 are closed. After the detection device is installed, the inlet valve 14 and the outlet valve 15 are opened. During the operation of the device, the inlet valve 14 and the outlet valve 15 are always in the open state.

[0032] Specifically, the water storage tank 1 is used to store the TRT condensate to be measured. It is necessary to open an inlet 16 at a higher position on any side of the water storage tank 1 and install an inlet pipe 22. Open an outlet 17 at the bottom of the water storage tank 1 and install a drain pipe 23. The inlet pipe 22 is connected in sequence to the inlet manual valve 14, the inlet solenoid valve 7, and the filter 9 along the direction close to the water storage tank 1, and finally connected to the inlet 16 of the water storage tank 1. The drain pipe 23 at the bottom of the water storage tank is connected in sequence from the outlet 17 to the drain solenoid valve 8 and the drain manual valve 15 along the direction away from the water storage tank 1.

[0033] Specifically, the inlet solenoid valve 7 and the drain solenoid valve 8 are used for water storage and drainage control of the water storage tank 1: when the water storage tank 1 needs to store water, the control system 24 controls the inlet solenoid valve 7 to be energized and conducts, and the condensate enters the water storage tank 1 through the inlet pipe 22; when the water storage tank 1 needs to drain, the control system 24 controls the solenoid valve 8 to be energized and conducts, and the condensate is discharged from the water storage tank 1 through the drain pipe 23. The inlet solenoid valve 7 and the drain solenoid valve 8 are set because the detection device is located in a gas hazard area, and water storage and drainage need to be remotely controlled.

[0034] Specifically, the level transmitter 6 is used for level detection in the water storage tank 1. The level transmitter 6 converts the detected water level signal into a standard 4-20mA current signal that can be received by the control system 24 and sends it to the control system 24. After receiving the signal sent by the level transmitter 6, the control system 24 controls the opening or closing state of the inlet solenoid valve 7 or the drain solenoid valve 8 through its internal program. When the water level reaches the limit height, the inlet solenoid valve 7 needs to be closed. When the water level is lower than the minimum height, the drain solenoid valve 8 needs to be closed. The level transmitter 6 is inserted into the top of the water storage tank 1 through the third hole 20.

[0035] Specifically, the pH value sensor 2 measures a voltage signal. The pH value transmitter 3 converts the received voltage signal into a standard 4-20mA current signal that can be received by the control system 24 (such as PLC, DCS or SCADA) and sends it to the control system 24 for monitoring and recording. At the same time, the pH value transmitter 3 has an LCD display interface that can display the real-time pH value on site.

[0036] Specifically, the Cl - The signal measured by the value detection sensor 4 is a voltage signal, Cl - The voltage transmitter 5 converts the received voltage signal into a standard 4-20mA current signal that can be received by the control system 24 (such as PLC, DCS, or SCADA) and sends it to the control system 24 for monitoring and recording. Simultaneously, Cl... - The value detection transmitter 5 has an LCD display interface that can display the real-time Cl value on-site. - value.

[0037] Specifically, a detection device needs to be installed near the TRT condensate supply pipe at a position lower than the supply pipe. During installation, the inlet hand valve 14 and the drain hand valve 15 should be fully closed. The TRT condensate supply pipe is connected to the inlet hand valve 14, which is connected to the inlet pipe 22. The drain pipe 23 is connected to the TRT condensate outlet pipe through the drain hand valve 15, which is connected to the sewage ditch. All transmitter signal cables are connected to the PLC, DCS, or SCADA.

[0038] The working principle of this invention is as follows:

[0039] After the detection device is installed, open the inlet hand valve 14 and the drain hand valve 15 to start water storage. During water storage, remotely close the drain solenoid valve 8 and remotely open the inlet solenoid valve 7. Observe the water level display. When the level transmitter 6 detects that the water level exceeds the set limit height, it transmits a signal to the control system 24. The control system 24 then controls the inlet solenoid valve 7 to close automatically and start water quality detection.

[0040] When drainage begins, the inlet solenoid valve 7 is remotely closed and the drain solenoid valve 8 is remotely opened. The water level display is observed. When the level transmitter 6 detects that the water level is lower than the minimum height, it sends a signal to the control system 24, which then controls the drain solenoid valve 8 to close automatically. When detection begins, the detection is online and real-time, but the most valuable detection value is the static detection after water storage is completed. The detection data can be displayed in real time on PLC, DCD or SCADA, or it can be stored in the history for retrieval and statistics.

Claims

1. A portable TRT condensate water quality online real-time monitoring device, comprising a water storage tank (1), characterized in that, A water inlet pipe (22) is connected to any side of the water storage tank (1) via an inlet (16). A filter (9) and an inlet solenoid valve (7) are sequentially installed on the inlet pipe (22) in the direction away from the water storage tank (1). A drain pipe (23) is connected to the bottom of the water storage tank (1) via an outlet (17). A drain solenoid valve (8) is installed on the drain pipe (23). The detection device also includes a pH value detection sensor (2) and a Cl... - pH value detection sensor (3), the sensing component of the pH value detection sensor (2) is installed inside the water storage tank (1) through the first hole (18) on the top surface of the water storage tank (1), the Cl - The sensing component of the pH value detection sensor (3) is installed inside the water storage tank (1) through the second hole (19) on the top surface of the water storage tank (1). The pH value detection sensor (2) is electrically connected to the pH value transmitter (4) via a dedicated cable. - The value detection sensor (3) is connected to Cl via a dedicated cable. - The pH value transmitter (5) is electrically connected to the pH value transmitter (4) and Cl. - The signal cables of the value detection transmitter (5), the inlet solenoid valve (7), and the drain solenoid valve (8) are electrically connected to the control system (24).

2. The portable TRT condensate water quality online real-time monitoring device as described in claim 1, characterized in that, The detection device also includes a level transmitter (6), the sensing component of which is installed inside the water tank (1) through the third hole (20) on the top surface of the water tank (1), and the signal cable of the level transmitter (6) is electrically connected to the control system (24).

3. The portable TRT condensate water quality online real-time monitoring device as described in claim 1, characterized in that, The detection device also includes an explosion-proof enclosure (10), a water storage tank (1), a pH value detection sensor (2), and a Cl... - pH value detection sensor (3), pH value detection transmitter (4), Cl - The pH value transmitter (5), inlet solenoid valve (7), drain solenoid valve (8), and filter (9) are all located inside the explosion-proof enclosure (10). The explosion-proof enclosure (10) is provided with a first hole (11), a second hole (12), and a third hole (13). The inlet pipe (22) passes through the first hole (11) and is connected to the external TRT condensate water supply pipe through the inlet hand valve (14). The drain pipe (23) passes through the second hole (12) and is connected to the external TRT condensate water outlet pipe through the drain hand valve (15). The pH value transmitter (4), Cl - The signal cables of the value detection transmitter (5), the inlet solenoid valve (7), and the drain solenoid valve (8) pass through the third hole (13) and are electrically connected to the control system (24).

4. The portable TRT condensate water quality online real-time monitoring device as described in claim 3, characterized in that, Explosion-proof glass (21) is installed on any side of the explosion-proof enclosure (10).

5. The portable TRT condensate water quality online real-time monitoring device as described in claim 1, characterized in that, The filter (9) is a Y-type or T-type filter.

6. The portable TRT condensate water quality online real-time detection device as described in claim 2, characterized in that, The pH value detection sensor (2), Cl - pH value detection sensor (3), pH value detection transmitter (4), Cl - The level transmitter (5), level transmitter (6), inlet solenoid valve (7), and drain solenoid valve (8) are all explosion-proof.

7. The portable TRT condensate water quality online real-time detection device as described in claim 1, characterized in that, The control system (24) is any one of a programmable logic controller, a distributed control system, or a data acquisition and monitoring control system.

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