Industrial induction type acid-base concentration online detection system

Abstract

The utility model discloses an industrial induction type acid-base concentration online detection system which comprises a detection pipeline, a controller, a solution buffer, a detection and cleaning device and a liquid storage tank, the detection pipeline comprises a main pipeline, a flange, a stop valve A and a liquid inlet pipe; the main pipeline is used for conveying a tested solution and is connected with the stop valve A through a flange, the stop valve A is connected with the liquid inlet pipe, and the liquid inlet pipe vertically extends into the solution buffer; the detection and cleaning device is connected between the solution buffer and the liquid storage tank, and liquid in the solution buffer is input into the detection and cleaning device for detection and then is discharged into the liquid storage tank; the detecting and cleaning device comprises a shell, a liquid discharge pipe A is connected between the bottom of the shell and the solution buffer, and a liquid discharge pipe B is connected between the top of the shell and the liquid storage tank; a digital induction type sensor is connected in the shell, and the pH value of a solution in the shell is detected through the digital induction type sensor; a cleaning assembly is further connected to the shell and used for cleaning the digital induction type sensor.

Description

Technical Field

[0001] This utility model belongs to the field of chemical production technology, specifically relating to an industrial inductive online acid and alkali concentration detection system. Background Technology

[0002] Industrial inductive acid and alkali concentration online detection devices and systems are a new generation of solution acid and alkali measurement instruments. They feature pretreatment mechanisms, corrosion resistance, full intelligence, multi-functionality, high measurement performance, and strong environmental adaptability. They can be widely used in industries such as hydrometallurgy, chemical industry, and industrial wastewater treatment. They are suitable for solutions with strong acidity and alkalinity and small fluctuation ranges in acidity and alkalinity, enabling continuous monitoring of acid and alkali concentrations in solutions.

[0003] Existing inductive acid-base concentration meters are laboratory instruments that typically require pre-extraction of solution samples before placing them on the instrument's testing platform. However, this sampling and testing method has the following problems:

[0004] (1) When the sample is bumped or shaken during the test, it is easy to tip over or leak, which affects the test results and causes injury to personnel.

[0005] (2) Poor data real-time performance cannot meet the requirements of timely adjustment of production process.

[0006] In addition, pH meters are also a way to measure the acidity or alkalinity of solutions. However, in hydrometallurgical production, they also have the following problems:

[0007] (1) The high content of heavy metals in the solution during pH detection caused poisoning of the glass electrode, making it impossible to measure normally;

[0008] (2) The high hydrogen fluoride content in copper and nickel acid water corrodes the glass electrode, resulting in a large consumption of the electrode.

[0009] (3) Currently, there are many on-site testing points for pH glass electrodes, and the media content in wastewater is complex, making the testing difficult.

[0010] (4) Scale buildup on the glass electrode in the slurry over a long period of time affects the accuracy of the detection. Utility Model Content

[0011] This invention provides an industrial inductive online acid-base concentration detection system, which addresses the shortcomings of current laboratory-grade inductive acid-base concentration meters and online pH meters. It aims to solve technical problems in the process of measuring solution acid-base concentration, including online detection, solution buffering and defoaming, controller, data transmission, data monitoring platform, fault alarm, and automatic probe cleaning.

[0012] Therefore, the present invention adopts the following technical solution:

[0013] An industrial inductive acid-base concentration online detection system mainly consists of a solution pretreatment device, a digital inductive sensor, a controller, a wireless transmission network, and an online monitoring platform. The digital inductive sensor is the key component of the system, acquiring the acid-base concentration values ​​of the solution while suppressing various interferences. The controller processes the data, displays it, facilitates data communication, and sets parameters, providing data support for system construction. The wireless transmission network completes data interaction through the controller's 4G-DTU module. Finally, data integration, monitoring, and display are achieved through a cloud platform.

[0014] An industrial inductive online acid-base concentration detection system, characterized in that it includes a detection pipeline, a controller, a solution buffer, a detection and cleaning device, and a storage tank;

[0015] The testing pipeline includes a main pipeline, a flange, a shut-off valve A, and an inlet pipe. The main pipeline is used to transport the solution to be tested. The main pipeline is connected to the shut-off valve A through the flange. The shut-off valve A is connected to the inlet pipe. The inlet pipe extends vertically into the solution buffer. The solution in the main pipeline enters the solution buffer after passing through the flange, shut-off valve A, and inlet pipe.

[0016] The detector and cleaner are connected between the solution buffer and the storage tank. The liquid in the solution buffer is fed into the detector and cleaner for testing and then discharged into the storage tank.

[0017] The detection and cleaning device includes a detection chamber, with a drain pipe A connecting the bottom of the detection chamber to a solution buffer and a drain pipe B connecting the top of the detection chamber to a storage tank. The solution enters the detection chamber through drain pipe A and then exits into the storage tank through drain pipe B. A digital inductive sensor is connected to the detection chamber to detect the acidity or alkalinity of the solution inside. A cleaning assembly is also connected to the detection chamber for cleaning the digital inductive sensor.

[0018] The controller is connected to the digital inductive sensor signal;

[0019] Multiple ultrasonic transducers are connected to the sides and bottom of the detection chamber. The ultrasonic transducers emit ultrasonic waves that cause the liquid to vibrate, thereby cleaning the digital inductive sensor. The ultrasonic transducers are connected to the controller.

[0020] Solenoid valve A is connected to drain pipe A, and solenoid valve B is connected to drain pipe B. The controller is signal-connected to solenoid valve A and solenoid valve B. When the controller opens solenoid valve A and solenoid valve B at the same time, the structure is in normal detection state. When the controller first closes solenoid valve A and then closes solenoid valve B, the detection chamber forms a sealed space and is filled with solution, and the structure is in cleaning state.

[0021] It also includes a server. The controller connects to the server via a wireless network and is used to upload the monitored pH values ​​to the server.

[0022] The technical solution of this utility model is implemented as follows:

[0023] The technical problem this invention aims to solve is to achieve online detection of solution acid and alkali concentration while suppressing environmental and process interference factors, ensuring the stability and accuracy of acid and alkali concentration measurement data. The invention involves designing an online solution detection pipeline, using a buffer to pre-treat the solution, reducing the flow rate, eliminating air bubbles, and improving measurement results. It also includes data interaction between the controller and sensor, data transmission, data monitoring, and fault alarms between the controller, 4G-DTU module, and IoT platform, and a detection chamber integrating measurement and automatic probe cleaning.

[0024] This utility model includes a detection pipeline, a controller, a solution buffer, a detection and cleaning device, and a storage tank.

[0025] The testing pipeline mainly includes a main pipe, flange, shut-off valve A, inlet pipe, solution buffer, solenoid valve A, drain pipe A, detector and cleaner, drain pipe B, and solenoid valve B. The main pipe is used to transport the solution to be tested. The main pipe is connected to shut-off valve A via a flange. Shut-off valve A is connected to the inlet pipe. The outlet of the solution buffer is connected to solenoid valve A. Solenoid valve A is connected to one end of drain pipe A. The other end of drain pipe A is connected to the inlet of the detector and cleaner. The outlet of the detector and cleaner is connected to one end of drain pipe B. The other end of drain pipe A is connected to solenoid valve B. Solenoid valve B is connected to one end of drain pipe C. The other end of drain pipe C is connected to the inlet storage tank.

[0026] The detection and cleaning device uses a digital inductive sensor to detect the acid and alkali concentration of the solution flowing through the detection chamber, while the ultrasonic transducer can automatically clean the digital inductive sensor online, realizing online automated detection and cleaning functions. The solution input end of the detection chamber is connected to the output end of drain pipe A, and the solution output end of the detection chamber is connected to the input end of drain pipe B. The right, left, and lower surfaces of the detection chamber are connected to ultrasonic transducers A, B, and C, respectively. The upper surface of the detection chamber is connected to the digital inductive sensor, and the outer shell is fixed to the upper surface of the detection chamber with screws.

[0027] Furthermore, the solution buffer is connected to the inlet pipe, overflow pipe, and drain pipe A. The inlet pipe extends into the solution buffer to less than two-thirds of its volume. This serves three purposes: firstly, it reduces the impact force of the outflowing liquid on the solution inside the container; secondly, it facilitates the removal of air bubbles from the liquid; and thirdly, it ensures the timely discharge of solution from the solution buffer, preventing some fresh liquid from being directly discharged through the overflow pipe, which could affect measurement accuracy. The overflow pipe is located at the highest point of the solution buffer and is used to discharge gas from the solution buffer. This serves two purposes: firstly, it regulates the internal gas pressure of the solution buffer; and secondly, it can promptly discharge liquid overflowing from the solution buffer due to increased inlet flow, ensuring the safety of the solution buffer. In summary, the solution buffer is used to reduce the liquid flow rate, eliminate air bubbles, improve the stability of the output solution, and reduce the impact of air bubbles in the solution on measurement accuracy.

[0028] Furthermore, the detection and cleaning device is connected to solenoid valves A and B, forming a structure with dual functions of detection and cleaning. When solenoid valves A and B are opened simultaneously by the controller, the structure is in normal detection mode. When solenoid valve A is closed first and then solenoid valve B is closed by the controller, the structure forms a sealed space filled with solution, and is in cleaning mode. The ultrasonic transducers A, B, and C connected to the detection and cleaning device are activated by the controller, and the surface of the digital sensor is cleaned using the mechanical wave characteristics of ultrasound. After the cleaning is completed in a timed manner, the above steps are reversed to complete the cleaning and restore the normal detection state.

[0029] Furthermore, the detection pipeline, controller, solution buffer, detection and cleaning device, and storage tank constitute an industrial inductive online acid and alkali concentration detection device, which realizes the switching between automatic detection and automatic cleaning functions through automatic control technology.

[0030] Furthermore, the solenoid valve A, solenoid valve B, ultrasonic transducer A, ultrasonic transducer B, and ultrasonic transducer C are managed by the controller, which controls their start and stop according to preset logic, and cooperates to complete the automatic detection and cleaning functions.

[0031] Furthermore, the server and the controller are connected via a wireless 4G network to complete data interaction, status monitoring, and remote control.

[0032] Compared with the prior art, this utility model has the following advantages: it realizes the measurement of industrial acid and alkali concentration using conductivity technology, effectively reduces the fragility of traditional glass electrodes, and can prevent personnel from accidentally entering, reducing personnel casualties. It is worthy of being promoted and applied. Attached Figure Description

[0033] Figure 1 This is a system schematic diagram of this utility model;

[0034] Figure 2This is a test diagram of this utility model;

[0035] In the diagram: 1-Main pipe, 2-Flange, 3-Stop valve A, 4-Inlet pipe, 5-Solution buffer, 6-Stop valve B, 7-Solenoid valve A, 8-Server, 9-Controller, 10-Drain pipe A, 11-Digital inductive sensor, 12-Ultrasonic transducer A, 13-Ultrasonic transducer B, 14-Detector and cleaner, 15-Solenoid valve B, 16-Drain pipe B, 17-Wire, 18-Overflow pipe, 19-Drain pipe C, 20-Storage tank, 21-Detection chamber, 22-Ultrasonic transducer C, 23-Outer casing, 24-Screw. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0037] like Figure 1 As shown in this example, an industrial inductive acid-base concentration online detection system specifically includes: a solution buffer 5, a server 8, a controller 9, and a detector and cleaner 14. The main pipeline 1 is connected to a shut-off valve A3 via a flange 2 to form a sampling branch. The shut-off valve A3 can also adjust the sampling flow rate and facilitate maintenance of the detection circuit components. The inlet pipe 4 extends into the solution buffer 5 to less than two-thirds of its volume. The overflow pipe 18 is located at the highest point of the solution buffer 5. The drain pipe A10 is connected to the conical outlet of the solution buffer 5 to reduce the liquid flow rate, eliminate air bubbles, improve the stability of the output solution, and reduce the impact of air bubbles in the solution on measurement accuracy.

[0038] like Figure 2 As shown, the cleaner specifically includes: a digital inductive sensor 11, an ultrasonic transducer A12, an ultrasonic transducer B13, a detection and cleaning unit 14, a detection chamber 21, an ultrasonic transducer C22, a protective shell 23, and screws 24. The digital inductive sensor 11 is connected to the detection chamber 21 via threads. Using the principle of electromagnetic induction, it detects the conductivity of the solution being tested. Based on a function algorithm relating conductivity to acid / alkali concentration, it converts the conductivity to the acid / alkali concentration value of the solution. The right, left, and lower surfaces of the detection chamber 21 are connected to the ultrasonic transducers A12, B13, and C13, respectively, forming an ultrasonic cleaning device used to clean dirt from the digital inductive sensor and the surface of the detection chamber. The outer shell 23 is fixed to the upper surface of the detection chamber 21 via screws 24 to protect the ultrasonic transducers.

[0039] Solenoid valves A3 and B15 are connected to the normally open contacts of the relays in controller 9. The relays are activated via the STM32 output I / O, thereby controlling the solenoid valves to open when energized and close when de-energized. When the preset cleaning time is reached, controller 9 sequentially closes solenoid valves B15 and A3, putting the detector and cleaner 14 into cleaning mode. This ensures that the detection chamber 21 is filled with solution while keeping the solution in a static state, providing the necessary conditions for ultrasonic cleaning of the digital inductive sensor and the detection chamber. After cleaning is completed, controller 9 sequentially opens solenoid valves A3 and B15 to drain the cleaning solution from the detector and cleaner 14 and restore the automatic detection mode.

[0040] Ultrasonic transducers A12, B13, and C22 are connected to the drive circuit of controller 9. When the detector and cleaner 14 is in cleaning mode, controller 9 simultaneously turns on ultrasonic transducers A12, B13, and C22. During the propagation of the mechanical waves generated by the ultrasonic transducers in the solution, microbubbles grow and close under the action of sound waves, generating strong shock waves that break down dirt and disperse it in the cleaning solution, thus completing the cleaning effect on the surface dirt of the digital sensor and the detection chamber. After cleaning is completed, controller 9 simultaneously stops ultrasonic transducers A12, B13, and C22 from working.

[0041] Server 8 and controller 9 achieve data interaction, online monitoring, and remote control via public cloud through controller 9's 4G-DTU module.

Claims

1. An industrial inductive online acid-base concentration detection system, characterized in that, Includes detection pipeline, controller (9), solution buffer (5), detection and cleaning device, and storage tank (20); The testing pipeline includes a main pipeline (1), a flange (2), a stop valve A (3), and an inlet pipe (4). The main pipeline (1) is used to transport the solution to be tested. The main pipeline (1) is connected to the stop valve A (3) through the flange (2). The stop valve A (3) is connected to the inlet pipe (4). The inlet pipe (4) extends vertically into the solution buffer (5). The solution in the main pipeline (1) enters the solution buffer (5) after passing through the flange (2), the stop valve A (3), and the inlet pipe (4). The detector and cleaner is connected between the solution buffer (5) and the storage tank (20). The liquid in the solution buffer (5) is input into the detector and cleaner for detection and then discharged into the storage tank (20). The detection and cleaning device includes a detection chamber, with a drain pipe A (10) connecting the bottom of the detection chamber to the solution buffer (5) and a drain pipe B (16) connecting the top of the detection chamber to the storage tank (20). The solution enters the detection chamber through the drain pipe A (10) and is then discharged into the storage tank (20) through the drain pipe B (16). A digital inductive sensor (11) is connected to the detection chamber to detect the acidity or alkalinity of the solution in the detection chamber. A cleaning assembly is also connected to the detection chamber to clean the digital inductive sensor (11). The controller (9) is connected to the digital inductive sensor (11) via signal connection.

2. The industrial inductive acid-base concentration online detection system according to claim 1, characterized in that, Multiple ultrasonic transducers are connected to the sides and bottom of the detection chamber. The ultrasonic transducers emit ultrasonic waves to drive the liquid to vibrate, thereby cleaning the digital inductive sensor (11). The ultrasonic transducers are connected to the controller (9) via signal.

3. The industrial inductive acid-base concentration online detection system according to claim 1, characterized in that, The drain pipe A (10) is connected to a solenoid valve A (7), and the drain pipe B (16) is connected to a solenoid valve B (15). The controller (9) is signal-connected to the solenoid valves A (7) and B (15). When the controller (9) opens the solenoid valves A (7) and B (15) at the same time, the structure is in normal detection state. When the controller (9) first closes the solenoid valve A (7) and then closes the solenoid valve B (15), the detection chamber forms a sealed space and is filled with solution. The structure is in cleaning state.

4. The industrial inductive acid-base concentration online detection system according to claim 1, characterized in that, The solution buffer (5) is connected to an overflow pipe at the top, and the outlet of the overflow pipe is connected to the storage tank (20). A shut-off valve B (6) is connected to the overflow pipe.

5. The industrial inductive acid-base concentration online detection system according to claim 1, characterized in that, The inlet pipe (4) extends into the solution buffer (5) to a depth of less than two-thirds.

6. The industrial inductive acid-base concentration online detection system according to claim 1, characterized in that, It also includes a server (8), and a controller (9) is connected to the server (8) via a wireless network. The controller (9) is used to upload the monitored acid and alkalinity values ​​to the server (8).

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