A dynamic hydrochloric acid concentration online detection device

Abstract

The present invention discloses a dynamic hydrochloric acid concentration online detection device, which belongs to the technical field of hydrochloric acid concentration detection. It includes a bracket assembly, a liquid injection and discharge assembly, a gravitational mass measurement assembly, an inertial mass measurement assembly and a container lifting acceleration assembly installed on the bracket assembly, and a temperature detection element; the bracket assembly includes a bottom plate, a column, an upper support plate and a lower support plate, the liquid injection and discharge assembly includes an upper pipeline, a constant volume container, a liquid injection pipe, a liquid discharge pipe and an overflow pipe, the gravitational mass measurement assembly and the inertial mass measurement assembly are used to measure the gravitational mass and inertial mass of the hydrochloric acid solution respectively, and the container lifting acceleration assembly is used to drive the constant volume container filled with the hydrochloric acid solution to move up and down with a constant acceleration. The present invention is an online detection device that improves the mass and density measurement accuracy of the hydrochloric acid solution by dynamic and static mutual compensation, thereby significantly improving the concentration measurement accuracy of the hydrochloric acid solution.

Description

Technical Field

[0001] The invention mainly relates to the technical field of hydrochloric acid concentration detection, in particular to a dynamic hydrochloric acid concentration online detection device. Background Art

[0002] The concentration determination of hydrochloric acid is very important because in many experiments and industrial processes, the concentration of hydrochloric acid needs to be accurately controlled and adjusted. In the prior art, the concentration of hydrochloric acid is usually detected by a Baume meter, that is, the Baume meter is placed in a container filled with hydrochloric acid, the Baume degree on the Baume meter is read, and then the Baume degree is adjusted according to a specific thermometer, and the concentration value is converted according to the corrected Baume degree. Although the prior art has achieved the concentration measurement of hydrochloric acid solution, there are still certain shortcomings: manual reading of the Baume meter is labor-intensive, and the error caused by human factors is large. Therefore, there is an urgent need for a high-precision online detection device for hydrochloric acid concentration. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in view of the technical problems existing in the prior art, the present invention provides an online detection device which improves the quality and density measurement accuracy of hydrochloric acid solution by dynamic and static mutual compensation, thereby significantly improving the concentration measurement accuracy of hydrochloric acid solution.

[0004] In order to solve the above problems, the solution proposed in the present invention is: a dynamic hydrochloric acid concentration online detection device, including a bracket assembly, and also including: a liquid injection and discharge assembly installed on the bracket assembly, a gravitational mass measurement assembly, an inertial mass measurement assembly and a container lifting and accelerating assembly, and a temperature detection element.

[0005] The support assembly comprises a bottom plate, a column fixedly mounted on the bottom plate along a vertical direction, and an upper support plate and a lower support plate fixedly mounted on the column.

[0006] The injection and discharge assembly includes: an upper pipeline connected to a hydrochloric acid pipeline of a concentration to be measured, a constant volume container with a known fixed volume, an injection pipe with a lower end opening facing the constant volume container and an upper end connected to the upper pipeline, a control valve installed at the inlet of the injection pipe, a discharge pipe connected to the bottom of the side of the constant volume container and provided with a discharge valve, and an overflow pipe connected to the upper part of the side of the constant volume container.

[0007] The gravitational mass measurement component is installed between the lower support plate and the constant volume container, and is used to statically measure the gravitational mass of the hydrochloric acid solution inside the constant volume container when the constant volume container is at rest.

[0008] The inertial mass measurement component is installed between the column and the constant volume container, and is used to dynamically measure the inertial mass of the hydrochloric acid solution inside the constant volume container when the constant volume container is in a uniformly accelerated lifting state.

[0009] The container lifting acceleration assembly is installed on the bracket assembly, and is used to drive the constant volume container filled with hydrochloric acid solution to move up and down with a stable acceleration; the temperature detection element is installed inside the constant volume container, and is used to detect the temperature of the hydrochloric acid solution in real time, and then perform temperature compensation on the measured value of the hydrochloric acid concentration.

[0010] Furthermore, the gravitational mass measurement assembly includes: a sensor bracket fixedly mounted on the lower support plate, and a first weighing sensor fixedly mounted on the upper end of the sensor bracket; the first weighing sensor can be in contact with or separated from the bottom of the constant volume container.

[0011] Furthermore, the inertial mass measurement assembly includes: a lifting acceleration plate that can slide up and down along the column, a second weighing sensor fixedly mounted on the lifting acceleration plate, and an acceleration sensor fixedly mounted on the constant volume container for detecting the lifting acceleration of the detector; a lifting through hole is opened on the lifting acceleration plate to allow the first weighing sensor and the sensor bracket to pass through.

[0012] Furthermore, the container lifting acceleration assembly includes: a lower bracket, a linear guide and an upper bracket fixedly mounted on the column, a slider slidably mounted on the linear guide, a ball screw rotatably mounted on the lower bracket and the upper bracket at both ends, a rolling nut sleeved on the ball screw and fixedly connected to the lifting acceleration plate, and a driving motor fixedly mounted on the lower bracket for driving the ball screw to rotate; the lifting acceleration plate is fixedly connected to the slider.

[0013] Furthermore, the second weighing sensor is a ring-shaped pressure sensor.

[0014] Furthermore, the acceleration sensor has a function of wireless data transmission.

[0015] Furthermore, it also includes a bypass component, which includes: a bypass pipe connected to the upper pipeline, a bypass valve arranged on the bypass pipe for controlling the flow of hydrochloric acid solution inside the controller, a manifold connected to the lower end of the bypass pipe, and a lower pipeline fixedly mounted on the bottom plate and with the upper end connected to the lower end of the manifold; the lower ends of the overflow pipe and the injection pipe open toward the manifold.

[0016] Furthermore, the temperature detection element is a temperature sensor with a function of wireless data transmission.

[0017] Furthermore, a liquid sensor is provided inside the overflow pipe, and the liquid sensor has a wireless data transmission function and is used to detect the overflow flow of the hydrochloric acid solution from the constant volume container to the overflow pipe.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects: a dynamic hydrochloric acid concentration online detection device of the present invention is provided with a constant volume container with a rated volume and a gravitational mass measurement component, and the gravitational mass of the hydrochloric acid solution with the rated volume is statically measured by the static pressure method; the present invention is also provided with an inertial mass measurement component and a container lifting acceleration component, the container lifting acceleration component enables the constant volume container filled with hydrochloric acid solution to have a constant acceleration during the lifting process, and the excess hydrochloric acid solution remaining in the overflow pipe and the drain pipe during the lifting acceleration process can quickly drip into the confluence, and the inertial mass measurement component dynamically measures the inertial mass of the hydrochloric acid solution with the rated volume; and the average value of the gravitational mass and the inertial mass is used as the mass of the hydrochloric acid solution with the rated volume, and this method of dynamic and static compensation significantly improves the measurement accuracy of the mass and density of the hydrochloric acid solution. With the temperature of the hydrochloric acid solution measured by the temperature sensor, the density value of the hydrochloric acid solution is converted into the concentration value of the hydrochloric acid solution. It can be seen from this that the present invention is an online detection device that improves the measurement accuracy of the mass and density of the hydrochloric acid solution by dynamic and static mutual compensation, thereby significantly improving the measurement accuracy of the concentration of the hydrochloric acid solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a schematic diagram of the working principle of a dynamic hydrochloric acid concentration online detection device when measuring inertial mass.

[0020] Figure 2 The present invention is a schematic diagram of the working principle of a dynamic hydrochloric acid concentration online detection device when measuring gravitational mass.

[0021] Figure 3 It is a relationship diagram between the pressure value of the second weighing sensor and the acceleration of the constant volume container when the acceleration magnitudes are equal during the lifting and lowering process of the constant volume container.

[0022] Figure 4 It is a schematic diagram of the process of implementing online detection of hydrochloric acid concentration in the present invention.

[0023] 11—base plate; 12—column; 13—lower support plate; 14—upper support plate; 21—lower bracket; 22—upper bracket; 23—ball screw; 24—drive motor; 25—linear guide; 26—slider; 27—rolling nut; 31—sensing bracket; 32—first weighing sensor; 41—second weighing sensor; 42—acceleration sensor; 43—lifting acceleration plate; 431—lifting through hole; 50—upper pipeline; 51—control valve; 52—liquid injection pipe; 53—constant volume container; 531—overflow pipe; 532—liquid discharge pipe; 533—liquid discharge valve; 61—bypass pipe; 62—bypass valve; 63—concentrator; 64—lower pipeline; 7—temperature detection element. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. For the convenience of description, the hydrochloric acid solution of the concentration to be detected is recorded as the hydrochloric acid solution below; the state in which all the hydrochloric acid solution in the constant volume container 53 flows out through the drain pipe 532 is recorded as the empty state of the constant volume container 53; the critical state when the hydrochloric acid solution in the constant volume container 53 begins to overflow from the overflow pipe 531 is recorded as the full state of the constant volume container 53; the mass of the constant volume container 53 in the empty state and the mass of the temperature detection element 7, the mass of the overflow pipe 531, the mass of the drain pipe 532, and the mass of the drain valve 533 are recorded as the empty mass of the constant volume container 53. The mass of the constant volume container 53 in a fully loaded state, the mass of the temperature detection element 7, the mass of the overflow pipe 531, the mass of the drain pipe 532, the mass of the drain valve 533 and the mass of the hydrochloric acid solution in the constant volume container 53 are recorded as the full load mass of the constant volume container 53. The volume of the hydrochloric acid solution in the fully loaded constant volume container 53 is recorded as the rated volume of the hydrochloric acid solution. ; The state in which the first weighing sensor 32 is in contact with the bottom of the constant volume container 53, the second weighing sensor 41 is separated from the bottom of the constant volume container 53, and the constant volume container 53 is in a stationary state is recorded as the gravitational mass measurement state; the state in which the first weighing sensor 32 is separated from the bottom of the constant volume container 53, the second weighing sensor 41 is in contact with the bottom of the constant volume container 53, and the constant volume container 53 is in a uniformly accelerated descending motion and a uniformly accelerated ascending motion is recorded as the inertial mass measurement state.

[0025] like Figure 1 and Figure 2As shown in the figure, a dynamic hydrochloric acid concentration online detection device of the present invention comprises a support assembly, a liquid injection and discharge assembly, a gravitational mass measurement assembly, an inertial mass measurement assembly and a container lifting and accelerating assembly mounted on the support assembly, a temperature detection element 7 and a control system (not shown in the figure); the support assembly is used to support and fix the liquid injection and discharge assembly, the inertial mass measurement assembly and the container lifting and accelerating assembly, and the support assembly specifically comprises a bottom plate 11, a column 12 fixedly mounted on the bottom plate 11 along a vertical direction, and a temperature detection element 7 fixedly mounted on the column 12. The upper support plate 14 and the lower support plate 13; the liquid injection and discharge assembly is used to produce a rated volume of hydrochloric acid solution, specifically including: an upper pipeline 50 connected to a hydrochloric acid pipeline of a concentration to be measured, a constant volume container 53 with a known fixed volume, an injection pipe 52 with a lower end opening facing the constant volume container 53 and an upper end connected to the upper pipeline 50, a control valve 51 installed at the inlet of the injection pipe 52, a discharge pipe 532 connected to the bottom of the side of the constant volume container 53 and provided with a discharge valve 533, and an overflow pipe 531 connected to the upper part of the side of the constant volume container 53. In specific implementation, both the control valve 51 and the drain valve 533 are electromagnetic valves, and the control system (not shown in the figure) controls the volume of the hydrochloric acid solution flowing into the constant volume container 53 by closing or opening the control valve 51 and the drain valve 533; the lower end of the injection pipe 52 can be extended into the constant volume container 53 and can be freely raised and lowered relative to the constant volume container 53; a liquid sensor (not shown in the figure) with a wireless data transmission function is provided inside the overflow pipe 531 to detect the overflow flow of the hydrochloric acid solution from the constant volume container 53 to the overflow pipe 531. As an embodiment 1, the liquid sensor can be HDP215 produced by Hedi or FST100-7201 produced by Rolls in the United States. In specific application, the drain valve 533 is closed first, and then the control valve 51 is opened, and the external hydrochloric acid solution flows into the constant volume container 53 through the upper pipeline 50 until the liquid sensor (not shown in the figure) detects that the hydrochloric acid solution in the overflow pipe 531 overflows, and at this time, the control valve 51 is closed by the control system (not shown in the figure). After closing the control valve 51, the excess hydrochloric acid solution in the constant volume container 53 flows to the manifold 63 through the overflow pipe 531; when no liquid flows in the overflow pipe 531, the volume of the hydrochloric acid solution in the constant volume container 53 is the rated volume. After the measurement of the gravitational mass and inertial mass of the hydrochloric acid solution is completed, the control system (not shown in the figure) opens the drain valve 533 , and the hydrochloric acid solution in the constant volume container 53 flows to the manifold 63 through the drain pipe 532 .

[0026] The gravitational mass measurement component is installed between the lower support plate 13 and the constant volume container 53. When the constant volume container 53 is at rest, it is used to statically measure the gravitational mass of the hydrochloric acid solution inside the constant volume container 53. Preferably, the gravitational mass measurement component includes: a sensor bracket 31 fixedly installed on the lower support plate 13, and a first weighing sensor 32 fixedly installed on the upper end of the sensor bracket 31; the first weighing sensor 32 can collide with or separate from the bottom of the constant volume container 53. When the gravitational mass measurement component is working, the first weighing sensor 32 is in conflict with the bottom of the constant volume container 53, and the second weighing sensor 41 is separated from the bottom of the constant volume container 53, that is, the full load mass of the constant volume container 53 The generated gravity is completely applied to the first load cell 32 .

[0027] The inertial mass measurement assembly is installed between the column 12 and the constant volume container 53. When the constant volume container 53 is in a uniformly accelerated lifting state, it is used to dynamically measure the inertial mass of the hydrochloric acid solution inside the constant volume container 53. Preferably, the inertial mass measurement assembly includes: a lifting acceleration plate 43 that can slide up and down along the column 12, a second weighing sensor 41 fixedly installed on the lifting acceleration plate 43, and an acceleration sensor 42 fixedly installed on the constant volume container 53 for detecting the lifting acceleration; the lifting acceleration plate 43 is provided with a lifting through hole 431 that allows the first weighing sensor 32 and the sensor bracket 31 to pass through. In specific implementation, the acceleration sensor 42 has a wireless data transmission function, and the use of the wireless transmission function can eliminate the mass measurement interference caused by electrical wiring. As a first embodiment, the acceleration sensor 42 can be selected from the G-Link-200 series produced by Lord MicroStrain of the United States. The second weighing sensor 41 is a circular pressure sensor. The inner diameter of the circular pressure sensor is larger than the outer diameter of the first weighing sensor 32 and the outer diameter of the sensor bracket 31. Therefore, when the lifting acceleration plate 43 is descending, the first weighing sensor 32 can sequentially pass through the lifting through hole 431 provided on the lifting acceleration plate 43 and the inner diameter of the second weighing sensor 41, and collide with the bottom of the constant volume container 53.

[0028] The container lifting acceleration assembly is mounted on the support assembly, and is used to drive the constant volume container 53 filled with hydrochloric acid solution to move up and down with a stable acceleration; the temperature detection element 7 is mounted inside the constant volume container 53, and is used to measure the temperature of the hydrochloric acid solution inside the constant volume container 53 in real time, so as to convert the concentration of the hydrochloric acid solution according to the temperature and density of the hydrochloric acid solution. Preferably, the container lifting acceleration assembly includes: a lower support 21, a linear guide 25 and an upper support 22 fixedly mounted on the column 12, a slider 26 slidably mounted on the linear guide 25, a ball screw 23 rotatably mounted on the lower support 21 and the upper support 22 at both ends, a rolling nut 27 sleeved on the ball screw 23 and fixedly connected to the lifting acceleration plate 43, and a driving motor 24 fixedly mounted on the lower support 21 for driving the ball screw 23 to rotate; the lifting acceleration plate 43 is fixedly connected to the slider 26. In specific implementation, the linear guide 25 is installed in the vertical direction; a rolling bearing is installed on each of the lower bracket 21 and the upper bracket 22, and the two ends of the ball screw 23 pass through the two rolling bearings and are rotatably connected to the lower bracket 21 and the upper bracket 22; the temperature detection element 7 selects a temperature sensor with a wireless data transmission function. As an embodiment 1, the temperature detection element 7 can select the SIN-TBP800 produced by Sinomeasure. The control system (not shown in the figure) is electrically connected to the drive motor 24. As a preferred embodiment, the drive motor 24 selects a stepper motor or a servo motor. In specific application, the drive motor 24 rotates forward, the ball screw 23 rotates forward, and the lifting acceleration plate 43 and the constant volume container 53 move downward; the drive motor 24 rotates reversely, the ball screw 23 rotates reversely, and the lifting acceleration plate 43 and the constant volume container 53 move upward. The control system (not shown in the figure) adjusts the rotation speed of the drive motor 24 to achieve uniform acceleration rotation operation of the ball screw 23, thereby making the lifting acceleration plate 43, the constant volume container 53 and the hydrochloric acid solution placed in the constant volume container 53 have a constant acceleration during the lifting process, so that the constant volume container 53 and the hydrochloric acid solution inside the constant volume container 53 generate a stable inertial force.

[0029] Preferably, the present invention further includes a bypass assembly, which includes: a bypass pipe 61 connected to the upper pipe 50, a bypass valve 62 arranged on the bypass pipe 61 for controlling the flow of hydrochloric acid solution inside the controller, a flow collector 63 connected to the lower end of the bypass pipe 61, and a lower pipe 64 fixedly mounted on the bottom plate 11 and having its upper end connected to the lower end of the flow collector 63; the lower ends of the overflow pipe 531 and the injection pipe 52 open toward the flow collector 63. The bypass assembly is used to realize online detection of the concentration of the rated volume of hydrochloric acid solution and to realize real-time delivery.

[0030] Working principle of gravitational mass measurement assembly: The constant volume container 53 is placed in a gravitational mass measurement state through a control system (not shown in the figure), that is, the first weighing sensor 32 is in contact with the bottom of the constant volume container 53, and the second weighing sensor 41 is separated from the bottom of the constant volume container 53. At this time, the gravitational mass of the hydrochloric acid solution with a rated volume is measured by the first weighing sensor 32. Static measurement is performed. Due to the empty mass of the constant volume container 53 When the constant volume container 53 is fully loaded, the total pressure measured by the first weighing sensor 32 is , so the gravitational mass of the hydrochloric acid solution is .

[0031] Working principle of inertial mass measurement assembly: The control system (not shown in the figure) is used to put the constant volume container 53 in an inertial mass measurement state, that is, the first weighing sensor 32 is separated from the bottom of the constant volume container 53, the second weighing sensor 41 is in contact with the bottom of the constant volume container 53, and the constant volume container 53 in a fully loaded state is in a uniformly accelerated descending motion and uniformly accelerated ascending motion. The acceleration sensor 42 and the second weighing sensor 41 are used to measure the lifting acceleration and dynamic pressure value of the constant volume container 53 in a fully loaded state, thereby realizing the inertial mass of the hydrochloric acid solution with a rated volume. As an example 1, the acceleration of the constant volume container 53 during the descent process is equal to the acceleration during the ascent process. Figure 3 During the uniform acceleration descent, the acceleration value measured by the acceleration sensor 42 is The corresponding pressure value measured by the second weighing sensor 41 is During the uniform acceleration process, the acceleration value measured by the acceleration sensor 42 is The corresponding pressure value measured by the second weighing sensor 41 is .in, Figure 3 middle The oblique straight line where the point is located represents: during the uniform acceleration rising process, the pressure value measured by the second weighing sensor 41 The acceleration value measured by the acceleration sensor 42 relationship; The oblique straight line where the point is located represents: the pressure value measured by the second weighing sensor 41 during the uniform acceleration descent process The acceleration value measured by the acceleration sensor 42 relationship; is the pressure value The angle between the inclined straight line and the horizontal line is equal to the pressure value The angle between the inclined straight line and the horizontal line. The average inertial mass of the hydrochloric acid solution measured during the entire lifting process As a second embodiment, the acceleration of the constant volume container 53 during the descent process is not equal to the acceleration during the ascent process. During the descent process, the acceleration sensor 42 measures the downward acceleration value as , the corresponding pressure value measured by the second weighing sensor 41 During the ascent, the acceleration sensor 42 measures the upward acceleration value , the corresponding pressure value measured by the second weighing sensor 41 Therefore, the inertial mass of the hydrochloric acid solution with a specific volume is dynamically measured during the descent. , the inertial mass of a hydrochloric acid solution with a specific volume is dynamically measured during the ascent , the average inertial mass of the hydrochloric acid solution was measured during the whole process .

[0032] Principle of static and dynamic complementation: According to the theory of physics, in theory, the gravitational mass of the same object should be equal to its inertial mass. In actual measurement, since the gravitational mass and inertial mass are measured based on the static method and the dynamic method respectively, both deviate from the theoretical value, and the former is larger and the latter is smaller. Therefore, the mass of the hydrochloric acid solution with a rated volume is taken as the average value of the gravitational mass and the inertial mass in the present invention, that is, the static and dynamic complementation each other.

[0033] The working process and workflow of the present invention are as follows: Figure 1-Figure 4 In the first step, the control system (not shown in the figure) closes the drain valve 533 and opens the control valve 51, and the external hydrochloric acid solution flows into the constant volume container 53 through the upper pipe 50; in the second step, when the liquid sensor (not shown in the figure) in the overflow pipe 531 detects that there is liquid flowing inside it, the control system (not shown in the figure) closes the control valve 51; in the third step, the drive motor 24 is accelerated to rotate in the forward direction, the lifting acceleration plate 43 and the constant volume container 53 are uniformly accelerated to descend, and the constant volume container 53 enters the inertial mass measurement state. During the uniform accelerated descent, the measured value of the acceleration sensor 42 and the measured value of the second weighing sensor 41 are read; in the fourth step, when the first weighing sensor 32 is in contact with the bottom of the constant volume container 53, and the second weighing sensor 41 is separated from the bottom of the constant volume container 53, the drive motor 24 is turned off, and the constant volume container 53 is in the gravitational mass measurement state; in the fifth step, the gravitational mass of the hydrochloric acid solution with a rated volume is completed through the gravitational mass measurement component. Measurement; Step 6: The driving motor 24 accelerates in the reverse direction, and the lifting acceleration plate 43 and the constant volume container 53 rise uniformly and accelerate until they return to the initial height position, and the constant volume container 53 enters the inertial mass measurement state again. During the uniform acceleration rise, the measurement value of the acceleration sensor 42 and the measurement value of the second weighing sensor 41 are read; Step 7: The inertial mass of the hydrochloric acid solution is calculated based on the measurement values ​​of the third and sixth steps. , according to step 5, calculate the gravitational mass of the hydrochloric acid solution , and the average mass of hydrochloric acid solution was calculated by using the dynamic and static complementary method , and then calculate the density of hydrochloric acid ; Step 8, read the measured value of the temperature detection element 7 , complete the temperature measurement of the hydrochloric acid solution. In the ninth step, the control system (not shown in the figure) queries the "hydrochloric acid concentration and density comparison table" online to obtain the hydrochloric acid concentration value. As an example, let's assume that the density of the hydrochloric acid solution calculated in the seventh step is , the eighth step is measured , then from the "Hydrochloric acid concentration and density comparison table" we can know that the hydrochloric acid concentration is 14%.

[0034] The above are only specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should fall within the protection scope of the present invention.

Claims

1. A dynamic hydrochloric acid concentration online detection device, comprising a bracket assembly, characterized in that: Also includes: A liquid injection and discharge assembly, a gravitational mass measurement assembly, an inertial mass measurement assembly, a container lifting and accelerating assembly, and a temperature detection element (7) installed on the support assembly; The support assembly comprises a base plate (11), a column (12) fixedly mounted on the base plate (11) in a vertical direction, and an upper support plate (14) and a lower support plate (13) fixedly mounted on the column (12); The injection and discharge assembly comprises: an upper pipe (50) connected to a hydrochloric acid pipe of a concentration to be measured, a constant volume container (53) having a known fixed volume, an injection pipe (52) with a lower end opening facing the constant volume container (53) and an upper end connected to the upper pipe (50), a control valve (51) installed at the inlet of the injection pipe (52), a discharge pipe (532) connected to the bottom of a side of the constant volume container (53) and provided with a discharge valve (533), and an overflow pipe (531) connected to the upper part of the side of the constant volume container (53); The gravitational mass measurement component is installed between the lower support plate (13) and the constant volume container (53), and is used to statically measure the gravitational mass of the hydrochloric acid solution inside the constant volume container (53) when the constant volume container (53) is at rest; the gravitational mass measurement component comprises: a sensor bracket (31) fixedly installed on the lower support plate (13), and a first weighing sensor (32) fixedly installed on the upper end of the sensor bracket (31); the first weighing sensor (32) can contact or separate from the bottom of the constant volume container (53); The inertial mass measurement assembly is installed between the column (12) and the constant volume container (53), and is used to dynamically measure the inertial mass of the hydrochloric acid solution in the constant volume container (53) when the constant volume container (53) is in a uniformly accelerated lifting state; the inertial mass measurement assembly comprises: a lifting acceleration plate (43) that can slide up and down along the column (12), a second weighing sensor (41) fixedly installed on the lifting acceleration plate (43), and an acceleration sensor (42) fixedly installed on the constant volume container (53) for detecting lifting acceleration; the lifting acceleration plate (43) is provided with a lifting through hole (431) that allows the first weighing sensor (32) and the sensor bracket (31) to pass through; The container lifting acceleration assembly is mounted on the support assembly and is used to drive the constant volume container (53) filled with hydrochloric acid solution to move up and down at a stable acceleration; the temperature detection element (7) is mounted inside the constant volume container (53) and is used to detect the temperature of the hydrochloric acid solution in real time, thereby performing temperature compensation on the measured value of the hydrochloric acid concentration; the container lifting acceleration assembly comprises: a lower support (21) fixedly mounted on the column (12), a linear guide rail (25) and an upper support (22), a sliding A slider (26) mounted on the linear guide rail (25), a ball screw (23) rotatably mounted on the lower bracket (21) and the upper bracket (22) at both ends, a rolling nut (27) sleeved on the ball screw (23) and fixedly connected to the lifting acceleration plate (43), and a driving motor (24) fixedly mounted on the lower bracket (21) for driving the ball screw (23) to rotate; the lifting acceleration plate (43) is fixedly connected to the slider (26).

2. A dynamic hydrochloric acid concentration online detection device according to claim 1, characterized in that: The second weighing sensor (41) is a circular pressure sensor.

3. A dynamic hydrochloric acid concentration online detection device according to claim 1, characterized in that: The acceleration sensor (42) has a function of wireless data transmission.

4. A dynamic hydrochloric acid concentration online detection device according to claim 1, characterized in that: The invention also comprises a bypass assembly, wherein the bypass assembly comprises: a bypass pipe (61) connected to the upper pipe (50), a bypass valve (62) arranged on the bypass pipe (61) for controlling the flow of hydrochloric acid solution inside the controller, a flow collector (63) connected to the lower end of the bypass pipe (61), and a lower pipe (64) fixedly mounted on the bottom plate (11) and having its upper end connected to the lower end of the flow collector (63); the lower ends of the overflow pipe (531) and the injection pipe (52) are opened toward the flow collector (63).

5. A dynamic hydrochloric acid concentration online detection device according to claim 1, characterized in that: The temperature detection element (7) is a temperature sensor with a wireless data transmission function.

6. A dynamic hydrochloric acid concentration online detection device according to claim 1, characterized in that: A liquid sensor is provided inside the overflow pipe (531), and the liquid sensor has a wireless data transmission function and is used to detect the overflow flow of the hydrochloric acid solution from the constant volume container (53) to the overflow pipe (531).

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