Scale and corrosion inhibitor concentration detection device

Abstract

The utility model relates to the technical field of concentration detection, and discloses a scale and corrosion inhibitor concentration detection device, which comprises a workbench and a plurality of detection tubes, the top wall of the workbench is fixedly connected with a vertical shell, the middle part of the rear side of the inner wall of the vertical shell is fixedly connected with a fixed shell, the outer walls of the plurality of detection tubes are fixedly connected with clamping rings, and the clamping rings are fixedly connected with the fixed shell. The bottom of the clamping ring is clamped with the top of the fixed shell, the top of the detection pipe is communicated with a liquid injection valve, the middle of the rear side of the vertical shell is fixedly connected with a frequency conversion fan, the bottom of the right side of the frequency conversion fan is communicated with a conveying pipe, and the bottom end of the conveying pipe is communicated with a hollow shell. According to the scale and corrosion inhibitor detection device, the bottoms of the detection pipes are communicated through the connecting valves, so that conveyed airflow is conveyed into the detection pipes through the connecting valves, and a color developing agent and a scale and corrosion inhibitor are uniformly mixed, so that the concentration of the scale and corrosion inhibitor can be calculated, and the condition that the detection result of lower concentration is not obvious is avoided.

Description

Technical Field

[0001] This utility model relates to the field of concentration detection technology, and in particular to a scale and corrosion inhibitor concentration detection device. Background Technology

[0002] Scale and corrosion inhibitors are chemical agents used in water treatment, playing a crucial role in preventing scale formation and slowing down metal corrosion. Industrial circulating cooling water systems are a major application area for scale and corrosion inhibitors. Water is continuously circulated to cool industrial equipment such as heat exchangers and cooling towers. Due to the evaporation and concentration of water, the concentration of calcium and magnesium ions in the water gradually increases. At the same time, dissolved oxygen and carbon dioxide in the water also accelerate the corrosion of metal equipment. In the blast furnace cooling system of steel plants, the temperature of the circulating cooling water rises during the cooling process of the blast furnace, and water evaporates, leading to an increase in the concentration of calcium and magnesium salts in the water. Scale can easily form on the surface of the heat exchanger, and carbon steel equipment will also be corroded.

[0003] A search revealed Chinese patent publication number CN212807816U, which discloses a concentration detection device for the preparation of corrosion inhibitors. The device includes a first drive motor, a support, a base, a sampling bottle placement platform, and a second drive motor. The first drive motor is fixedly connected to the support, and a stirring rod is mounted on its output shaft. The second drive motor is fixedly connected to the base, and a bidirectional reciprocating lead screw is mounted on its output shaft. The bidirectional reciprocating lead screw and the lead screw nut form a reciprocating helical transmission. The lead screw nut is fixedly connected to the sampling bottle placement platform. The sampling bottle placement platform has slots on its left and right sides, which are nested in the guide rails on both sides of the support. In use, the first drive motor drives the stirring rod to rotate at high speed to stir the corrosion inhibitor in the sampling bottle, and the second drive motor drives the sampling bottle fixed on the sampling bottle placement platform to perform reciprocating linear motion, achieving the effect of automatic vibration of the corrosion inhibitor. This solves the problems of time-consuming, labor-intensive, and slow detection speed of existing manual detection methods. However, in actual use, the device uses multiple motors to drive the vibration detection, which requires comparison of the foam height of different reagent concentrations. This necessitates multiple vibration experiments, and the foam comparison makes the detection results for lower concentrations less obvious, thus reducing the efficiency of the equipment during detection. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a scale and corrosion inhibitor concentration detection device, which aims to improve the problem in the prior art where the detection results for lower concentrations are not obvious due to foam comparison, thus reducing the detection efficiency of the equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a scale and corrosion inhibitor concentration detection device, comprising a workbench and multiple detection tubes, wherein a vertical shell is fixedly connected to the top wall of the workbench, a fixed shell is fixedly connected to the middle of the rear side of the inner wall of the vertical shell, a locking ring is fixedly connected to the outer wall of each of the multiple detection tubes, the bottom of the locking ring engaging with the top of the fixed shell, an injection valve is connected to the top of each detection tube, a variable frequency fan is fixedly connected to the middle of the rear side of the vertical shell, a conveying pipe is connected to the bottom right side of the variable frequency fan, a hollow shell is connected to the bottom end of the conveying pipe, multiple connecting valves are equidistantly connected to the top wall of the hollow shell, the top ends of the multiple connecting valves are respectively connected to the bottom ends of the corresponding detection tubes, a spectrophotometer is fixedly installed on the right side of the vertical shell, and a sealing mechanism is provided on the top right side of the variable frequency fan.

[0006] The above technical solution accelerates the mixing rate of the colorimetric agent and the scale and corrosion inhibitor under the airflow, thereby improving the colorimetric efficiency. At the same time, the spectrophotometer detects the absorbance of the solvent at a specific wavelength, thereby calculating the concentration of the scale and corrosion inhibitor. This allows for different concentrations to be used for various tests, avoiding the situation where the test results of lower concentrations are not obvious, and improving the test efficiency.

[0007] As a further description of the above technical solution:

[0008] The sealing mechanism includes a connecting pipe, the left end of which is connected to the top right side of the variable frequency fan, the top end of which is connected to an electromagnetic switching valve, a filter disc is fixedly connected to the rear side of the electromagnetic switching valve, the top end of which is connected to a negative pressure shell, the outer wall of which is fixedly connected to the top of the inner wall of the vertical shell, a plurality of negative pressure pipes are connected to the front side of the negative pressure shell, and a sealing sleeve is connected to the bottom end of the negative pressure pipes.

[0009] The above technical solution enables the electromagnetic switching valve to switch the extraction path of the variable frequency fan, allowing air to enter the variable frequency fan after filtration and be output, or to extract air from the space inside the sealing sleeve through the negative pressure shell, thereby achieving a negative pressure seal at the connection between the injection valve and the detection tube, ensuring the sealing effect during the injection of the color developer.

[0010] As a further description of the above technical solution:

[0011] A control switch is fixedly connected to the left side of the vertical shell. The control switch is electrically connected to the variable frequency fan, the electromagnetic switching valve and the spectrophotometer respectively.

[0012] The above technical solution enables the variable frequency fan, electromagnetic switching valve, and spectrophotometer to be turned on and off.

[0013] As a further description of the above technical solution:

[0014] Each of the sealing sleeves has a limiting slider fixedly connected to its rear side. The top of the rear side of the inner wall of the vertical shell has multiple sliding grooves at equal intervals. The rear sides of the multiple limiting sliders are slidably connected to the corresponding sliding grooves.

[0015] The above technical solution enables the sliding limit of the sealing sleeve, reducing the pulling damage of the sealing sleeve to the negative pressure pipe.

[0016] As a further description of the above technical solution:

[0017] A rubber ring is fixedly installed at the bottom of the outer wall of the conveying pipe, and the outer wall of the rubber ring is fixedly connected to the rear side of the top wall of the hollow shell.

[0018] The above technical solution enables the rubber ring to protect the bottom connection of the conveying pipe, reducing wear on the bottom of the conveying pipe.

[0019] As a further description of the above technical solution:

[0020] The workbench has support frames fixedly connected to the left and right sides of its bottom wall, and corner protectors are fixedly connected to the front and rear sides of the bottom of the support frames.

[0021] The above technical solution reduces the slippage of the support frame and corner protectors during operation, thereby increasing the stability of the device.

[0022] As a further description of the above technical solution:

[0023] The inner wall of the fixed shell is fixedly connected with multiple rubber pads at equal intervals, and one side of each of the multiple rubber pads is provided with an arc surface.

[0024] The above technical solution improves the fixing effect of the fixing shell on the detection tube.

[0025] As a further description of the above technical solution:

[0026] The external dimensions of the multiple engagement rings are matched with the internal slot dimensions of the fixed housing, and the multiple connecting valves are arranged at equal intervals.

[0027] The above technical solution ensures that the locking ring limits the detection tube, preventing it from detaching.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the bottom and top of the detection tube are connected by a connecting valve and a liquid injection valve, respectively. The airflow delivered by the variable frequency fan is then transported into the detection tube through the connecting valve, so that the color developer and the scale and corrosion inhibitor are evenly mixed, improving the color development efficiency. Then, the absorbance of the solvent at a specific wavelength is detected by a spectrophotometer, thereby calculating the concentration of the scale and corrosion inhibitor. This avoids the situation where the detection results are not obvious at low concentrations, thus improving the detection efficiency.

[0030] 2. In this utility model, the solenoid valve can switch the extraction path of the fan through the connection of the connecting pipe. When it is necessary to extract outside air, the solenoid switching valve extracts air through the front end, and the air is filtered and then enters the interior of the variable frequency fan for output. Through the switching of the solenoid switching valve, the airflow is extracted through the negative pressure shell to the space inside the sealing sleeve, so that the connection between the injection valve and the detection tube is sealed by negative pressure, ensuring the sealing effect when the color developer is injected. Attached Figure Description

[0031] Figure 1 This is a perspective view of a scale and corrosion inhibitor concentration detection device proposed in this utility model;

[0032] Figure 2 This is a side view of a scale and corrosion inhibitor concentration detection device proposed in this utility model;

[0033] Figure 3 This is a schematic diagram of the structure of the fixing shell of the scale and corrosion inhibitor concentration detection device proposed in this utility model;

[0034] Figure 4 This is a schematic diagram of the detection tube of a scale and corrosion inhibitor concentration detection device proposed in this utility model;

[0035] Figure 5 This is a schematic diagram of the sealing mechanism of a scale and corrosion inhibitor concentration detection device proposed in this utility model.

[0036] Legend:

[0037] 1. Workbench; 2. Sealing mechanism; 201. Connecting pipe; 202. Electromagnetic conversion valve; 203. Filter plate; 204. Negative pressure shell; 205. Negative pressure pipe; 206. Sealing sleeve; 3. Vertical shell; 4. Fixed shell; 5. Detection pipe; 6. Clamping ring; 7. Liquid injection valve; 8. Variable frequency fan; 9. Delivery pipe; 10. Hollow shell; 11. Connecting valve; 12. Spectrophotometer; 13. Control switch; 14. Rubber pad; 15. Rubber ring; 16. Support frame; 17. Corner protector; 18. Limiting slider; 19. Slide groove. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a scale and corrosion inhibitor concentration detection device, comprising a workbench 1 and multiple detection tubes 5. A vertical shell 3 is fixedly connected to the top wall of the workbench 1, providing support for a fixed shell 4. The fixed shell 4 is fixedly connected to the middle rear side of the inner wall of the vertical shell 3. Each detection tube 5 has a locking ring 6 fixedly connected to its outer wall, with the bottom of the locking ring 6 engaging with the top of the fixed shell 4. An injection valve 7 is installed at the top of each detection tube 5. The concentration of the scale and corrosion inhibitor can be detected through the detection tubes 5. The locking ring 6 allows the detection tubes 5 to be locked inside the fixed shell 4. Simultaneously, the injection valve 7 allows for the injection of a colorimetric agent into the detection tubes 5. The middle rear side of the vertical shell 3 is fixedly connected to the fixed shell 4. A variable frequency fan 8 is fixedly connected to the bottom right side of the variable frequency fan 8, and a conveying pipe 9 is connected to the bottom end of the conveying pipe 9. A hollow shell 10 is connected to the bottom end of the conveying pipe 9, and multiple connecting valves 11 are equidistantly connected to the top wall of the hollow shell 10. Under the operation of the variable frequency fan 8, airflow is conveyed through the conveying pipe 9, and the airflow is conveyed through the connection between the hollow shell 10 and the multiple connecting valves 11, so that the reagent inside the detection tube 5 can be uniformly mixed. The top ends of the multiple connecting valves 11 are respectively connected to the bottom ends of the corresponding detection tubes 5. A spectrophotometer 12 is fixedly installed on the right side of the vertical shell 3. When the spectrophotometer 12 is started, it can perform colorimetric detection on the reagent inside the detection tube 5. A sealing mechanism 2 is provided on the top right side of the variable frequency fan 8.

[0040] Specifically, by engaging the middle of the detection tube 5 containing the scale and corrosion inhibitor with the fixed shell 4, ensuring that its bottom end is installed and connected to the connecting valve 11, and simultaneously connecting its top end to the injection valve 7, the colorimetric agent is injected into the detection tube 5 through the injection valve 7, completing the detection preparation. Then, the variable frequency fan 8 is started, so that the airflow is delivered through the hollow shell 10 and the connecting valve 11 into the detection tube 5, further ensuring the uniform mixing of the colorimetric agent and the scale and corrosion inhibitor. The spectrophotometer 12 is started to detect the absorbance of the solvent at a specific wavelength, thereby calculating the concentration of the scale and corrosion inhibitor. By replacing the detection tube 5 with different concentrations, diverse detection effects can be achieved, avoiding the situation where the detection results of lower concentrations are not obvious, thereby improving detection efficiency, ensuring the accuracy and efficiency of the detection process, making the concentration determination of the scale and corrosion inhibitor more accurate, and also improving the overall efficiency of the detection work.

[0041] Reference Figure 1 , Figure 2 and Figure 5 The sealing mechanism 2 includes a connecting pipe 201. The left end of the connecting pipe 201 is connected to the top right side of the variable frequency fan 8. The top end of the connecting pipe 201 is connected to an electromagnetic switching valve 202. Through the connection of the electromagnetic switching valve 202, the variable frequency fan 8 can change the path of air extraction. A filter disc 203 is fixedly connected to the rear side of the electromagnetic switching valve 202. When air is extracted from the front side of the electromagnetic switching valve 202, the extracted airflow is filtered through the filter disc 203. The top end of the electromagnetic switching valve 202 is connected to a negative pressure shell 204. The outer wall of the negative pressure shell 204 is fixedly connected to the top of the inner wall of the vertical shell 3. Multiple negative pressure pipes 205 are connected to the front side of the negative pressure shell 204. At the same time, the negative pressure shell 204 is selected to extract air, so that the air inside the sealing sleeve 206 is completely extracted. The bottom end of the negative pressure pipe 205 is connected to the sealing sleeve 206, thereby improving the negative pressure seal at the connection between the injection valve 7 and the detection pipe 5.

[0042] Specifically, with the connection of the connecting pipe 201, the variable frequency fan 8 can switch the airflow extraction path through the electromagnetic switching valve 202. When air needs to be extracted from the outside, the electromagnetic switching valve 202 will be activated, and the air will be drawn in through the front airflow extraction and preliminarily filtered through the filter disc 203 to remove larger particulate impurities. The filtered air is then sent into the fan for further output. In addition, through the switching of the electromagnetic switching valve 202, the variable frequency fan 8 can also extract airflow through the negative pressure shell 204, so that multiple negative pressure pipes 205 can effectively extract airflow from the space inside the sealing sleeve 206, thereby ensuring that the connection between the injection valve 7 and the detection pipe 5 can be fully sealed by negative pressure, ensuring the sealing effect when the color developer is injected, effectively avoiding leakage of the color developer during the injection process, and ensuring the stability and reliability of the entire device.

[0043] Reference Figure 1 , Figure 4 and Figure 5 A control switch 13 is fixedly connected to the left side of the vertical shell 3. The control switch 13 is electrically connected to the variable frequency fan 8, the electromagnetic conversion valve 202 and the spectrophotometer 12 respectively. Limiting sliders 18 are fixedly connected to the rear side of multiple sealing sleeves 206. Multiple sliding grooves 19 are equidistantly opened on the top rear side of the inner wall of the vertical shell 3. The rear side of the multiple limiting sliders 18 is slidably connected to the corresponding sliding grooves 19 respectively. A rubber ring 15 is fixedly installed at the bottom of the outer wall of the conveying pipe 9. The outer wall of the rubber ring 15 is fixedly connected to the rear side of the top wall of the hollow shell 10.

[0044] Specifically, the control switch 13, which is electrically connected to the variable frequency fan 8, the electromagnetic conversion valve 202 and the spectrophotometer 12 respectively, enables the control switch 13 to open and close the device. The rear sides of the multiple limit sliders 18 are slidably connected to the corresponding slide grooves 19, thereby reducing the pulling damage of the sealing sleeve 206 to the negative pressure pipe 205. The rubber ring 15 provides protection for the bottom connection of the delivery pipe 9.

[0045] Reference Figure 1 , Figure 2 and Figure 3 The bottom wall of the workbench 1 is fixedly connected to the left and right sides of the bottom wall, and the bottom front and rear sides of the support frame 16 are fixedly connected to the corner protectors 17; the inner wall of the fixed shell 4 is fixedly connected to multiple rubber pads 14 at equal intervals, and one side of each rubber pad 14 is provided with an arc surface; the external dimensions of multiple locking rings 6 are larger than the internal slot dimensions of the fixed shell 4, and the multiple connecting valves 11 are arranged at equal intervals.

[0046] Specifically, the connection between the support frame 16 and the corner protector 17 improves the stability of the device during operation. The multiple rubber pads 14 enhance the fixation effect on the outer wall of the detection tube 5. The external dimensions of the multiple locking rings 6 are all larger than the internal slot dimensions of the fixing shell 4, ensuring the stability of the detection tube 5 when locked.

[0047] Working principle: Upon initial use, the middle of the detection tube 5 containing the scale and corrosion inhibitor is engaged with the fixed shell 4, and its bottom end is connected to the connecting valve 11. Simultaneously, its top end is connected to the injection valve 7. Colorimetric reagent is injected into the detection tube 5 through the injection valve 7, completing the preparation for detection. Then, the variable frequency fan 8 is activated, causing the airflow to pass through the hollow shell 10 and the connecting valve 11 into the detection tube 5, achieving uniform mixing of the colorimetric reagent and the scale and corrosion inhibitor, thus improving the colorimetric efficiency. Subsequently, the spectrophotometer 12 is activated to detect the absorbance of the solvent at a specific wavelength, thereby calculating the concentration of the scale and corrosion inhibitor. Different concentrations of solvent can be used to achieve diverse detection results, avoiding detection at lower concentrations. In cases where the results are not obvious, the detection efficiency is improved. Furthermore, through the connection of the connecting pipe 201, the electromagnetic switching valve 202 can switch the path of the airflow drawn by the variable frequency fan 8. When it is necessary to draw in outside air, the electromagnetic switching valve 202 completes the airflow extraction through the front end, allowing the air to pass through the filter disc 203 and enter the interior of the fan, so that larger particulate impurities can be filtered before being output. Alternatively, through the switching of the electromagnetic switching valve 202, the variable frequency fan 8 can draw in airflow through the negative pressure shell 204, thereby drawing in airflow through multiple negative pressure pipes 205 into the space inside the sealing sleeve 206, so that the connection between the injection valve 7 and the detection pipe 5 is sealed by negative pressure, ensuring the sealing effect during the injection of colorimetric reagent and preventing leakage of colorimetric reagent.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A scale and corrosion inhibitor concentration detection device, comprising a workbench (1) and multiple detection tubes (5), characterized in that: The top wall of the workbench (1) is fixedly connected to a vertical shell (3), and the middle of the rear side of the inner wall of the vertical shell (3) is fixedly connected to a fixed shell (4). The outer walls of the multiple detection tubes (5) are all fixedly connected to a locking ring (6). The bottom of the locking ring (6) is locked to the top of the fixed shell (4). The top of the detection tube (5) is connected to an injection valve (7). The middle of the rear side of the vertical shell (3) is fixedly connected to a variable frequency fan (8). The bottom right side of the variable frequency fan (8) is connected to a conveying pipe (9). The bottom end of the conveying pipe (9) is connected to a hollow shell (10). The top wall of the hollow shell (10) is equidistantly connected to multiple connecting valves (11). The top ends of the multiple connecting valves (11) are respectively connected to the bottom ends of the corresponding detection tubes (5). A spectrophotometer (12) is fixedly installed on the right side of the vertical shell (3). A sealing mechanism (2) is provided on the top right side of the variable frequency fan (8).

2. The scale and corrosion inhibitor concentration detection device according to claim 1, characterized in that: The sealing mechanism (2) includes a connecting pipe (201), the left end of which is connected to the top right side of the variable frequency fan (8), the top end of which is connected to an electromagnetic switching valve (202), the rear side of which is fixedly connected to a filter disc (203), the top end of which is connected to a negative pressure shell (204), the outer wall of which is fixedly connected to the top of the inner wall of the vertical shell (3), the front side of which is connected to a plurality of negative pressure pipes (205), and the bottom end of which is connected to a sealing sleeve (206).

3. The scale and corrosion inhibitor concentration detection device according to claim 2, characterized in that: A control switch (13) is fixedly connected to the left side of the shell (3). The control switch (13) is electrically connected to the variable frequency fan (8), the electromagnetic conversion valve (202) and the spectrophotometer (12).

4. The scale and corrosion inhibitor concentration detection device according to claim 2, characterized in that: Each of the sealing sleeves (206) has a fixedly connected limit slider (18) on its rear side. The inner wall of the shell (3) has multiple grooves (19) at equal intervals on its rear top side. The rear sides of the multiple limit sliders (18) are slidably connected to the corresponding grooves (19).

5. The scale and corrosion inhibitor concentration detection device according to claim 1, characterized in that: A rubber ring (15) is fixedly installed at the bottom of the outer wall of the conveying pipe (9), and the outer wall of the rubber ring (15) is fixedly connected to the rear side of the top wall of the hollow shell (10).

6. The scale and corrosion inhibitor concentration detection device according to claim 1, characterized in that: The bottom wall of the workbench (1) is fixedly connected to the left and right sides of the bottom wall of the workbench (1), and the bottom front and rear sides of the support frame (16) are fixedly connected to the corner pads (17).

7. The scale and corrosion inhibitor concentration detection device according to claim 1, characterized in that: The inner wall of the fixed shell (4) is fixedly connected with multiple rubber pads (14) at equal intervals, and one side of each of the multiple rubber pads (14) is provided with an arc surface.

8. The scale and corrosion inhibitor concentration detection device according to claim 1, characterized in that: The external dimensions of the multiple engagement rings (6) are matched with the internal slot dimensions of the fixed housing (4), and the multiple connecting valves (11) are arranged at equal intervals.

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