Concrete carbonization tester

Abstract

The invention relates to the technical field of concrete detection, and discloses a concrete carbonization tester which comprises a tester body and a cover plate located at the rear end of the tester body, a nozzle is installed at the upper end of one side of the tester body, and a camera, a light supplementing lamp and a distance measuring probe are installed on the side, away from the nozzle, of the upper end of the tester body. A solvent in the solvent conveying mechanism and a solute in the solute conveying mechanism are mixed in the mixed liquid spraying mechanism to form a detection solution; spraying a phenolphthalein solution into the hole from the nozzle; the color of the carbonized part and the uncarbonized part is changed; the distance between the color-changing junction and the surface of the concrete is detected through the distance measuring probe, so that the specific carbonization depth can be measured; when the distance measuring probe measures the distance, the camera can shoot an image in the hole, and the image is displayed on the display screen, so that a color-changing junction can be accurately positioned; the tester can realize automatic batching and automatic detection.

Description

Technical Field

[0001] This invention relates to the field of concrete testing technology, specifically a concrete carbonation analyzer. Background Technology

[0002] Concrete carbonation refers to the process by which the curing products of cement in concrete react chemically with atmospheric carbon dioxide (CO2) to form carbonates, leading to the corrosion of reinforcing steel. This is a common form of damage in concrete structures; concrete carbonation seriously affects the durability and safety of concrete structures. Concrete carbonation testing can determine the degree of carbonation in a concrete structure, assess its durability, and provide a basis for safety assessments and the development of reinforcement measures. Concrete carbonation testing typically employs various methods, including pH titration and carbonation depth measurement. Among these, the carbonation depth measurement method can accurately measure the depth of carbonation in concrete.

[0003] Chinese patent discloses an instrument for measuring the carbonation depth of long-aged concrete in hydropower projects (publication number CN218238679U), comprising a measuring tube, a control device at the first end of the measuring tube, and a housing, a display screen mounted on the surface of the housing, and a controller disposed inside the housing. The surface of the measuring tube is marked with graduations. A miniature high-definition camera and a light-emitting aperture for a marker light are disposed on the measuring tube near the second end. The center of the light-emitting aperture for the marker light is on the same circumference as the zero mark of the graduations. A marker light is disposed inside the measuring tube, and the light from the marker light passes through the light-emitting aperture and shines onto the wall surface of the concrete structure. The controller is connected to the display screen and the miniature high-definition camera via wiring. This instrument can accurately observe the interface between the carbonated and non-carbonated zones, ensuring the timeliness and accuracy of the detection results.

[0004] However, it requires separate configuration for detection and cannot be used immediately, making it inconvenient to use. Summary of the Invention

[0005] The purpose of this invention is to provide a concrete carbonation tester to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A concrete carbonation analyzer includes an analyzer body, a cover plate at the rear of the analyzer body, and a protective cover covering the upper part of the analyzer body and the cover plate. A display screen is provided on the front side of the analyzer body to display the image of the measured position and the measurement value. A nozzle is installed on the upper end of one side of the analyzer body, and a suction fan is embedded in the upper end of the analyzer body near the nozzle. A camera, a supplementary light, and a distance measuring probe are respectively installed on the upper end of the analyzer body away from the nozzle. A processor is installed on one side inside the analyzer body. Two clamps are fixedly connected to the inner end of the analyzer body near the processor. A solvent delivery mechanism is provided inside one clamp, and a solute delivery mechanism is installed inside the other clamp. A mixing spray mechanism is installed between the solvent delivery mechanism and the solute delivery mechanism.

[0008] As a further embodiment of the present invention: the solute conveying mechanism includes a solute tank, a conveying pipe connected to one side of the solute tank, a quantitative feeding component provided at one end of the conveying pipe, a negative pressure air pipe connected to the upper end of the quantitative feeding component, and a Roots blower connected to one end of the negative pressure air pipe.

[0009] As a further embodiment of the present invention: the quantitative feeding assembly includes a cylindrical shell, a motor is installed at one end of the cylindrical shell, an encoder is installed at one end of the motor, and a metering screw is installed at the other end of the motor inside the cylindrical shell. A funnel is connected to the upper end of the cylindrical shell away from the motor, and a feeding port is connected to the lower end of the cylindrical shell near the motor. A solenoid valve is installed on the feeding port. A filter element is installed at the upper end of the inner side of the funnel, and a funnel cover is embedded at the upper end of the funnel. A set of clamps is installed on the outer side of the cylindrical shell between the funnel and the feeding port.

[0010] As a further embodiment of the present invention: the upper end of the funnel cover is provided with an air outlet, which is connected to a negative pressure air pipe, and the lower end of the funnel near the filter element is provided with a feed inlet, which is connected to a conveying pipe.

[0011] As a further embodiment of the present invention: the solvent delivery mechanism includes a solvent bottle, with a first infusion tube embedded in the upper end of the solvent bottle, one end of the first infusion tube being connected to the input end of a metering pump, and the output end of the metering pump being connected to a second infusion tube.

[0012] As a further embodiment of the present invention: the mixing spraying mechanism includes an ejector, the ejector includes a converging tube and a diffuser, and a mixing tube located between the converging tube and the diffuser. One end of the converging tube is provided with a solvent inlet, and the upper end of the outer side of the converging tube is provided with a solute inlet. The upper end of the outer side of the mixing tube is connected to an air suction tube, and one end of the diffuser is connected to a spraying tube.

[0013] As a further embodiment of the present invention: one end of the spray pipe is connected to the nozzle, the upper end of the suction pipe is connected to the suction fan, the solute inlet is connected to the feed port, and the solvent inlet is connected to the delivery pipe.

[0014] As a further embodiment of the present invention: two sets of buckles are fixedly connected to the two ends of the outer side of the cover plate, and the two ends of the inner sidewall of the measuring instrument body are provided with slots that match the buckles. A set of slots is provided at the upper end of the outer side of both the measuring instrument body and the cover plate, and a buckle that matches the slot is provided on the inner side of the protective cover.

[0015] As a further aspect of the present invention: the protective cover has a groove, and a plurality of calibration blocks of different heights are arranged on the inner side of the groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] This invention involves mixing the solvent in the solvent delivery mechanism and the solute in the solute delivery mechanism in the mixing spray mechanism to form a detection solution; then, phenolphthalein solution is sprayed from a nozzle into the hole, causing the carbonized part to change color; the distance between the color-changing boundary and the concrete surface is detected by a ranging probe, thereby measuring the specific carbonation depth; during ranging, a camera can capture an image of the hole and display it on a screen, thus achieving precise location of the color-changing boundary; this measuring instrument can achieve automatic batching and automatic detection, which is convenient and fast. Attached Figure Description

[0018] Figure 1 A schematic diagram of a concrete carbonation tester;

[0019] Figure 2 This is a schematic diagram of the exploded main view structure of a concrete carbonation tester.

[0020] Figure 3 This is a partial structural diagram of a concrete carbonation tester.

[0021] Figure 4 This is a schematic diagram of the exploded rear view of a concrete carbonation tester.

[0022] Figure 5 This is a schematic diagram of the solvent delivery mechanism, solute delivery mechanism, and mixing spraying mechanism in a concrete carbonation tester.

[0023] Figure 6 This is a schematic diagram of the solute delivery mechanism in a concrete carbonation analyzer.

[0024] Figure 7This is a schematic diagram of the quantitative feeding component in a concrete carbonation analyzer.

[0025] Figure 8 This is a schematic diagram of the solvent delivery mechanism in a concrete carbonation tester.

[0026] Figure 9 This is a schematic diagram of the mixing spraying mechanism in a concrete carbonation tester.

[0027] In the diagram: 1. Instrument body; 2. Display screen; 3. Protective cover; 4. Groove; 5. Calibration block; 6. Clamp; 7. Solvent delivery mechanism; 71. Solvent bottle; 72. Infusion tube one; 73. Infusion tube two; 74. Metering pump; 8. Solute delivery mechanism; 81. Solute tank; 82. Feed pipe; 83. Roots blower; 84. Quantitative feeding assembly; 841. Shell; 842. Metering screw; 843. Clamp; 844. Feed port; 845. Solenoid valve; 846. Encoder; 847. Filter element; 848. Air outlet; 849. Funnel cover; 850. Funnel; 851. Feed inlet; 852. Motor; 85. Negative pressure air pipe; 9. Mixing and spraying mechanism; 91. Converging tube; 92. Mixing tube; 93. Diffuser tube; 94. Spraying pipe; 95. Suction pipe; 96. Solvent inlet; 97. Solute inlet; 10. Processor; 11. Cover plate; 12. Clip two; 21. Nozzle; 22. Fan; 23. Camera; 24. Fill light; 25. Range measuring probe; 26. Slot one; 27. Slot two. Detailed Implementation

[0028] Please see Figures 1-9In this embodiment of the invention, the concrete carbonation tester includes a tester body 1, a cover plate 11 located at the rear end of the tester body 1, and a protective cover 3 covering the upper end of the tester body 1 and the cover plate 11. A display screen 2 for displaying the image of the measured position and the measurement value is provided on the front side of the tester body 1. A nozzle 21 is installed on the upper end of one side of the tester body 1, and a suction fan 22 is embedded in the upper end of the tester body 1 near the nozzle 21. A camera 23, a supplementary light 24, and a distance measuring probe 25 are respectively installed on the upper end of the tester body 1 away from the nozzle 21. A processor 10 is installed on one side inside the tester body 1. A processor 10 is installed inside the tester body 1 near the processor. Two clamps 6 are fixedly connected to one end of the device 10. A solvent delivery mechanism 7 is provided inside one clamp 6, and a solute delivery mechanism 8 is installed inside the other clamp 6. A mixing spray mechanism 9 is installed between the solvent delivery mechanism 7 and the solute delivery mechanism 8. A hole with a diameter of about 15 mm is drilled on the concrete surface to be tested. When the solvent in the solvent delivery mechanism 7 and the solute in the solute delivery mechanism 8 are mixed after being mixed by the mixing spray mechanism 9, a test solution is formed. For example, 95% alcohol is mixed with phenolphthalein powder to form a phenolphthalein solution, which is sprayed into the hole from the nozzle 21. The uncarbonized part in the hole will appear red, while the carbonized part will remain its original color.

[0029] The ranging probe 25 can be one of the ultrasonic ranging sensor, laser ranging sensor, or infrared ranging sensor. Taking the infrared ranging sensor as an example, the infrared sensor emits infrared light (the wavelength range is usually 700nm to 1mm) and receives the reflected signal. The distance is measured based on the time difference between the transmitted signal and the received signal.

[0030] The distance between the discoloration boundary and the concrete surface is detected by the ranging probe 25, thereby measuring the specific carbonation depth. When measuring distance, the ranging probe 25 can capture images inside the hole through the camera 23 and display them on the display screen 2, thereby achieving accurate positioning of the discoloration boundary. The light emitted by the supplementary light 24 can improve the clarity of the images captured by the camera 23.

[0031] like Figure 1 , Figure 2 and Figure 4 As shown, the protective cover 3 has a groove 4, and several calibration blocks 5 of different heights, such as 0.5mm, 1mm, and 2mm, are arranged inside the groove 4. The corresponding calibration block 5 is measured by the ranging probe 25, and the value displayed on the display screen 2 is checked to see if it is the same as the value of the corresponding calibration block 5, so as to determine whether the measuring instrument is calibrated accurately.

[0032] like Figure 2 , Figure 3 and Figure 4 As shown, two sets of clips 12 are fixedly connected to the two ends of the outer side of the cover plate 11. The two ends of the inner sidewall of the measuring instrument body 1 are provided with slots 27 that match the clips 12. By snapping the clips 12 into the corresponding slots 27, the cover plate 11 can be installed on the measuring instrument body 1. After opening the cover plate 11, the solvent bottle 71 or solute container 81 can be taken out, making it convenient to add solvent or solute. The upper ends of the outer side of the measuring instrument body 1 and the cover plate 11 are provided with a set of slots 26. The inner side of the protective cover 3 is provided with clips that match the slots 26. When the clips are snapped into the corresponding slots 26, the protective cover 3 can be snapped onto the measuring instrument body 1 to protect the nozzle 21, the suction fan 22, the camera 23, the supplementary light 24, and the ranging probe 25.

[0033] like Figure 5 , Figure 6 and Figure 7As shown, the solute conveying mechanism 8 includes a solute tank 81, a conveying pipe 82 connected to one side of the solute tank 81, a metering feed assembly 84 installed at one end of the conveying pipe 82, a negative pressure air pipe 85 connected to the upper end of the metering feed assembly 84, and a Roots blower 83 connected to one end of the negative pressure air pipe 85. The metering feed assembly 84 includes a cylindrical shell 841, a motor 852 installed at one end of the cylindrical shell 841, an encoder 846 installed at one end of the motor 852, and a metering screw 842 installed inside the cylindrical shell 841 at the other end of the motor 852. A funnel 850 is connected to the upper end of the shell 841 away from the motor 852, and a discharge port 844 is connected to the lower end of the shell 841 near the motor 852. A solenoid valve 845 is installed on the discharge port 844. A filter element 847 is installed on the upper inner side of the funnel 850, and a funnel cover 849 is embedded in the upper end of the funnel 850. A set of clamps 843 is installed on the outer side of the shell 841 between the funnel 850 and the discharge port 844. The entire quantitative feeding assembly 84 can be fixedly installed in the measuring instrument body 1 by the clamps 843. The solute tank 81 is installed in the corresponding clamp. A holder 6 is provided for easy fixation; an air outlet 848 is provided at the upper end of the funnel cover 849, which is connected to the negative pressure air pipe 85; an inlet 851 is provided at the lower end of the funnel 850 near the filter element 847, which is connected to the conveying pipe 82; the solute tank 81 stores a solute, such as phenolphthalein powder; a negative pressure is generated sequentially in the negative pressure air pipe 85, air outlet 848, funnel 850, inlet 851, conveying pipe 82 and solute tank 81 by the Roots blower 83, so that the solute in the solute tank 81 flows out sequentially from the conveying pipe 82 and inlet 851. The solute enters the funnel 850 and is filtered by the filter element 847 to prevent it from entering the negative pressure pipe 85 through the outlet 848. This allows the solute in the solute tank 81 to be transported to the funnel 850. The solute then enters the cylinder 841 from the funnel 850. The motor 852 drives the metering screw 842 to rotate, thus transporting the solute in the cylinder 841 to the feed port 844. After the solenoid valve 845 is opened, the solute is discharged from the feed port 844. The encoder 846 calculates the rotation speed of the motor 852 and the metering screw 842 to achieve precise quantitative delivery.

[0034] like Figure 5 and Figure 8As shown, the solvent delivery mechanism 7 includes a solvent bottle 71, with a first infusion tube 72 embedded in the upper end of the solvent bottle 71. One end of the first infusion tube 72 is connected to the input end of the metering pump 74, and the output end of the metering pump 74 is connected to a second infusion tube 73. The solvent bottle 71 stores solvent, such as 95% alcohol. The metering pump 74 can pump the solvent in the solvent bottle 71 into the first infusion tube 72 in a metered manner, and then it flows out from the second infusion tube 73. The solvent bottle 71 is installed in a corresponding clamp 6 for easy fixation.

[0035] like Figure 5 and Figure 9 As shown, the mixing and spraying mechanism 9 includes an ejector, which comprises a converging tube 91 and a diffuser 93, and a mixing tube 92 located between the converging tube 91 and the diffuser 93. One end of the converging tube 91 has a solvent inlet 96, and the upper outer end of the converging tube 91 has a solute inlet 97. The upper outer end of the mixing tube 92 is connected to an air suction pipe 95. One end of the diffuser 93 is connected to a spray pipe 94, and one end of the spray pipe 94 is connected to a nozzle 21. The upper end of the air suction pipe 95 is connected to a suction fan 22. The solute inlet 97 is connected to a discharge port 844, and the solvent inlet 96 is connected to a delivery pipe 73. The solvent in the solvent bottle 71 is sequentially and quantitatively introduced into the converging tube 91 through the inlet tube 73 and the solvent inlet 96. The solvent in the cylinder shell 841 is sequentially and quantitatively introduced into the converging tube 91 through the discharge port 844 and the solute inlet 97. The solute and solute are injected into the mixing tube 92 at high speed in the converging tube 91. At the same time, air is sent into the mixing tube 92 from the suction pipe 95 by the suction fan 22. The solute and solute and air are vigorously mixed in the mixing tube 92 and fully dissolved to form a detection solution. After passing through the diffuser 93, the kinetic energy is converted into strong pressure energy, and the powerful detection solution is ejected from the nozzle 21.

[0036] Working principle: When it is necessary to test the carbonation of concrete test blocks, firstly, a hole with a diameter of about 15mm is chiseled out on the surface of the concrete to be tested and the dust is removed; then, the protective cover 3 is pulled out from the main body 1 of the instrument and the nozzle 21 is aligned with the hole.

[0037] Next, the metering pump 74 in the solvent delivery mechanism 7 is started, and the solvent in the solvent bottle 71 is meteredly pumped into the first delivery pipe 72 through the metering pump 74, and then meteredly enters the converging tube 91 through the second delivery pipe 73 and the solvent inlet 96 in sequence; at the same time, the Roots blower 83 is started, and the Roots blower 83 generates negative pressure in the solute tank 81, so that the solute in the solute tank 81 enters the funnel 850 through the delivery pipe 82 and the inlet 851 in sequence; the solute then enters the shell 841 from the funnel 850. Next, the motor 852 is started; the motor 852 drives the metering screw 842 to rotate, thereby conveying the solute in the shell 841 to the discharge port 844. After the solenoid valve 845 is opened, the solute flows out from the discharge port 844... The solute and solute are quantitatively introduced into the tapered tube 91 through the feed port 844 and the solute inlet 97. After the solute and solute are injected into the mixing tube 92 at high speed through the tapered tube 91, air is simultaneously sent into the mixing tube 92 through the suction pipe 95 by the suction fan 22. The solute and solute are vigorously mixed with the air in the mixing tube 92 and fully dissolved to form a detection solution. After passing through the diffuser 93, the kinetic energy is converted into high pressure energy, and the powerful detection solution is sprayed into the hole from the nozzle 21.

[0038] At this point, the uncarbonized part inside the hole will turn red, while the carbonized part will remain the original color. Then, the distance between the boundary of the color change and the concrete surface is detected by the ranging probe 25 to measure the specific carbonization depth, which is then displayed on the display screen 2.

[0039] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A concrete carbonation tester, comprising a tester body (1), a cover plate (11) located at the rear end of the tester body (1), and a protective cover (3) covering the upper end of the tester body (1) and the cover plate (11), and a display screen (2) is arranged on the front side of the tester body (1) for displaying the image of the measured position and the measurement value; characterized in that, The upper end of one side of the tester body (1) is provided with a nozzle (21), and a suction fan (22) is embeddedly installed at the upper end of the tester body (1) close to the nozzle (21), the upper end of the tester body (1) away from the nozzle (21) is respectively provided with a camera (23), a light supplementing lamp (24) and a distance measuring probe (25), and a processor (10) is installed on one side of the inside of the tester body (1), two clamps (6) are respectively fixedly connected to one end of the inside of the tester body (1) close to the processor (10), a solvent conveying mechanism (7) is arranged on the inside of one of the clamps (6), and a solute conveying mechanism (8) is installed on the inside of the other clamp (6), and a mixed liquid spraying mechanism (9) is installed between the solvent conveying mechanism (7) and the solute conveying mechanism (8).

2. The concrete carbonation meter of claim 1, wherein, The solute conveying mechanism (8) comprises a solute tank (81), one side of the solute tank (81) is connected with a conveying pipe (82), one end of the conveying pipe (82) is provided with a quantitative discharging assembly (84), the upper end of the quantitative discharging assembly (84) is connected with a negative pressure air pipe (85), one end of the negative pressure air pipe (85) is connected with a Roots blower (83).

3. The concrete carbonation meter of claim 2, wherein, The quantitative discharging assembly (84) comprises a barrel shell (841), one end of the barrel shell (841) is installed with a motor (852), one end of the motor (852) is installed with an encoder (846), and a metering screw (842) is installed in the inside of the barrel shell (841) at the other end of the motor (852), the upper end of the barrel shell (841) away from the motor (852) is communicated with a hopper (850), and a discharging port (844) is communicated with the lower end of the barrel shell (841) close to the motor (852), an electromagnetic valve (845) is installed on the discharging port (844), a filter element (847) is installed on the inside of the upper end of the hopper (850), and a hopper cover (849) is embeddedly installed on the upper end of the hopper (850), a plurality of clamps (843) are installed on the outside of the barrel shell (841) between the hopper (850) and the discharging port (844).

4. The concrete carbonation meter of claim 3, wherein, An air outlet (848) is formed in the upper end of the hopper cover (849), the air outlet (848) is connected with the negative pressure air pipe (85), a feeding port (851) is formed in the lower end of the outside of the hopper (850) close to the filter element (847), and the feeding port (851) is connected with the conveying pipe (82).

5. The concrete carbonation meter of claim 1, wherein, The solvent conveying mechanism (7) comprises a solvent bottle (71), a liquid conveying pipe one (72) is embeddedly arranged on the upper end of the solvent bottle (71), one end of the liquid conveying pipe one (72) is connected with the input end of a metering pump (74), and the output end of the metering pump (74) is connected with a liquid conveying pipe two (73).

6. The concrete carbonation meter of claim 1, wherein, The mixed liquid spraying mechanism (9) comprises a fluidic device, the fluidic device comprises a converging tube (91), a diverging tube (93) and a mixing tube (92) between the converging tube (91) and the diverging tube (93), one end of the converging tube (91) is provided with a solvent inlet (96), the upper end of the converging tube (91) is provided with a solute inlet (97), the upper end of the outer side of the mixing tube (92) is communicated with an air suction pipe (95), one end of the diverging tube (93) is connected with a liquid spraying pipe (94).

7. The concrete carbonation meter of claim 6, wherein, One end of the liquid spraying pipe (94) is connected with a nozzle (21), the upper end of the air suction pipe (95) is connected with a suction fan (22), the solute inlet (97) is connected with a discharging port (844), and the solvent inlet (96) is connected with a liquid conveying pipe two (73).

8. The concrete carbonation meter of claim 1, wherein, The outer side of the cover plate (11) is fixedly connected with two groups of buckles two (12), the inner side wall of the measuring instrument body (1) is provided with buckle grooves two (27) matched with the buckles two (12), the outer side of the measuring instrument body (1) and the upper end of the cover plate (11) are both provided with a group of buckle grooves one (26), and the inner side of the protective cover (3) is provided with buckles matched with the buckle grooves one (26).

9. The concrete carbonation meter of claim 1, wherein, The protective cover (3) is provided with a groove (4), and the inner side of the groove (4) is provided with a plurality of calibration blocks (5) with different heights.

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