A real-time monitoring device for early pH of cement components

Abstract

The present invention relates to the field of pH meter measurement, and more specifically, to an early pH real-time monitoring device for cement components, comprising a monitoring host, a probe bracket, an optical fiber probe and a container for holding cement samples, wherein the inner wall of the container is affixed with a photosensitive film, and the photosensitive film is in direct contact with the cement sample; the optical fiber probe is arranged on the probe bracket, one end of the optical fiber probe is connected to the monitoring host, and the other end is tightly attached to the outer wall of the container outside the photosensitive film. The early pH real-time monitoring device for cement components disclosed by the present invention can prevent the optical fiber probe from being damaged by cement during the pH monitoring of the cement sample by making the optical fiber probe contact the outer wall of the container, and the optical fiber probe and the photosensitive film in contact with the cement sample are measured in a non-direct contact manner, and the optical fiber probe can be prevented from being damaged by cement during the pH monitoring of the cement sample, and a rotatable probe bracket can be used to allow the optical fiber probe to be used for measurement at different positions and accurately align with the photosensitive film, so that the overall stability of the detection device is better.

Description

Technical Field

[0001] The invention relates to the field of pH meter measurement, and more specifically to a real-time monitoring device for early pH of cement components. Background Art

[0002] Since the degradation degree of reinforcement in concrete components is closely related to the pH value inside the concrete, accurate pH determination is crucial for assessing the corrosion degree and formulating corresponding prevention strategies.

[0003] However, most of the current probes are not suitable for use in cement pH monitoring, because traditional fiber optic pH meters have only a small pH monitoring range, usually 9 to 10, and fluorescent chemical sensors have a specific pH detection range. Only pH sensors with a suitable detection range can be used for pH detection in cement media. In addition, when monitoring pH values, the sensor probe needs to be embedded in cement for pH testing. Due to the pressure generated by cement hydration, the cement will gradually penetrate into the probe as the test progresses and cause damage to the probe.

[0004] Therefore, it is necessary to propose a real-time monitoring device for early pH of cement components to solve the above problems. Summary of the invention

[0005] In order to overcome at least one defect (shortcoming) of the above-mentioned prior art, the present invention provides a real-time monitoring device for early pH of cement components.

[0006] To solve the above technical problems, the technical solution of the present invention is as follows: a real-time monitoring device for early pH of cement components, comprising a monitoring host, a probe bracket, an optical fiber probe and a container for holding cement samples;

[0007] The inner wall of the container is affixed with a photosensitive film, and the photosensitive film is in direct contact with the cement sample;

[0008] The fiber optic probe is arranged on a probe holder, one end of the fiber optic probe is connected to the monitoring host, and the other end is tightly attached to the outer wall of the container outside the photosensitive film. In the present invention, the container is a glass container. By pressing the fiber optic probe against the outer wall of the container, the fiber optic probe and the photosensitive film in contact with the cement sample are measured in a non-direct contact manner, which can avoid the fiber optic probe being damaged by cement during cement sample pH monitoring. In addition, the use of a rotatable probe holder allows the fiber optic probe to be used for measurements at different positions and accurately aligned with the photosensitive film. Through such a setting, the overall stability of the detection device is good, the service life is long, and the real-time pH changes of cement can be effectively monitored.

[0009] Furthermore, the photosensitive film includes a hollow transparent adhesive and a photosensitive layer, and the photosensitive layer is adhered to the inner wall of the container by the hollow transparent adhesive. By setting the photosensitive layer on the inner wall of the container and using a non-contact optical fiber probe design, cement can be prevented from seeping into the optical fiber probe during the test, thereby avoiding damage to the optical fiber probe.

[0010] Furthermore, the thickness of the photosensitive layer is 0-200 microns. Such a setting allows sufficient fluorescence intensity to pass through. In practical applications, the thickness of the photosensitive layer can be adjusted as needed, which is within the protection scope of the present invention.

[0011] Further, the probe bracket includes a probe fixing clamp, a tightening screw, a rotating arm, a vertical cantilever, a vertical tightening screw and a base;

[0012] The vertical cantilever is arranged on the base, and the rotating arm is fixed on the vertical cantilever by vertically tightening screws;

[0013] The probe fixing clamp is arranged on the rotating arm by tightening the screws;

[0014] The optical fiber probe is arranged on the probe fixing clamp. Through the arrangement of the probe fixing clamp and the rotating arm, the monitoring host can be conveniently fixed. The position and angle of the optical fiber probe can also be adjusted as needed to facilitate rapid detection of light-sensitive films at different positions.

[0015] Furthermore, it also includes an optical fiber tube. The monitoring host is provided with an ST interface. One end of the optical fiber tube is connected to the monitoring host through the ST interface, and the other end is connected to the optical fiber probe. Through the optical fiber tube, the monitored signal can be quickly transmitted to the ST interface of the monitoring host.

[0016] Furthermore, the monitoring host is provided with a USB interface connected to a computer. Through the setting of the USB interface, the monitored data can be transmitted to other display devices or a computer host through the USB interface.

[0017] Furthermore, the monitoring host is provided with a PH monitor, and the ST interface is connected to the PH monitor. Through the setting of the PH monitor, the monitoring host can accurately monitor the PH value of the cement sample in real time, which is simple and practical.

[0018] Furthermore, the pH measurement range of the pH monitor is 0-13, and the monitoring time range of the pH monitor is 0-120 hours. In practical applications, the measurement range and monitoring time of the pH monitor can be adjusted as needed, which are all within the protection scope of the present invention.

[0019] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0020] The early-stage real-time pH monitoring device for cement components disclosed in the present invention, by placing the optical fiber probe against the outer wall of the container, the optical fiber probe and the photosensitive membrane in contact with the cement sample are measured in a non-direct contact manner, which can avoid the optical fiber probe being damaged by cement during the pH monitoring of the cement sample. In addition, the use of a rotatable probe bracket can enable the optical fiber probe to be used for measurement at different positions and accurately aligned with the photosensitive membrane. Through such an arrangement, the overall stability of the detection device is good, the service life is long, and the real-time pH changes of cement can be effectively monitored. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the early pH real-time monitoring device for cement components in the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the photosensitive film in the present invention.

[0023] In the figure, 1 is the monitoring host, 2 is the probe bracket, 3 is the optical fiber probe, 4 is the cement sample, 5 is the container, 6 is the photosensitive film, 7 is the hollow transparent glue, 8 is the photosensitive layer, 9 is the probe fixing clamp, 10 is the tightening screw, 11 is the rotating arm, 12 is the vertical cantilever, 13 is the vertical tightening screw, 14 is the base, 15 is the optical fiber tube, 16 is the ST interface, and 17 is the USB interface. DETAILED DESCRIPTION

[0024] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be said that the internal connection of two components is connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The technical solution of the present invention is further explained below in conjunction with the accompanying drawings and embodiments.

[0026] like Figure 1As shown, a real-time monitoring device for the early pH value of cement components comprises a monitoring host 1, a probe holder 2, an optical fiber probe 3 and a container 5 for containing a cement sample 4; a photosensitive film 6 is attached to the inner wall of the container 5, and the photosensitive film 6 is in direct contact with the cement sample 4; the optical fiber probe 3 is arranged on the probe holder 2, one end of the optical fiber probe 3 is connected to the monitoring host 1, and the other end is tightly attached to the outer wall of the container 5 outside the photosensitive film 6. In the present invention, the container 5 is a glass container, and by abutting the optical fiber probe 3 against the outer wall of the container 5, the optical fiber probe 3 and the photosensitive film 6 in contact with the cement sample 4 are measured in a non-direct contact manner, which can avoid the optical fiber probe 3 being damaged by cement during the pH monitoring of the cement sample. In addition, the use of a rotatable probe holder 2 allows the optical fiber probe to be used for measurement at different positions and accurately aligned with the photosensitive film. Through such an arrangement, the overall stability of the detection device is good, the service life is long, and the real-time pH change of cement can be effectively monitored.

[0027] like Figure 2 As shown, the photosensitive film 6 includes a hollow transparent adhesive 7 and a photosensitive layer 8. The photosensitive layer 8 is adhered to the inner wall of the container 5 by the hollow transparent adhesive 7. By arranging the photosensitive layer 8 on the inner wall of the container 5 and utilizing the non-contact optical fiber probe 3 design, cement can be prevented from penetrating into the optical fiber probe 3 during the test, thereby preventing damage to the optical fiber probe. In the present invention, the thickness of the photosensitive layer 8 is 0-200 microns. Such a setting allows sufficient fluorescence intensity to pass through. In practical applications, the thickness of the photosensitive layer 8 can be adjusted as needed, which is within the scope of protection of the present invention. When the fluorescent substance in the photosensitive layer is in direct contact with the test object, The generated fluorescence signal will be transmitted to the monitoring host. The thickness of the photosensitive layer is controlled at about 200 microns so that sufficient fluorescence intensity can pass through. The photosensitive layer is prepared by the following steps: 0.1 mg of aza-BODIPY fluorescent dye and 100 mg of chromium (III) excited gadolinium borate are added to a mixture of 500 mg of commercially available polyurethane hydrogel and 70% ethanol, and the ratio of hydrogel: ethanol solution is 1:9. The above mixture is then applied to a PET film with a thickness of 125 microns by a doctor blade coating method, and is cut into a circle of the same size as the sensing optical fiber probe by a mold, and is pasted on the inner wall of a glass container in combination with a circular hollow transparent adhesive.

[0028] In the present invention, the probe bracket 2 includes a probe fixing clamp 9, a tightening screw 10, a rotating arm 11, a vertical cantilever 12, a vertical tightening screw 13 and a base 14; the vertical cantilever 12 is arranged on the base 14, and the rotating arm 11 is fixed to the vertical cantilever 12 by the vertical tightening screw 13; the probe fixing clamp 9 is arranged on the rotating arm 11 by the tightening screw 10; the optical fiber probe 3 is arranged on the probe fixing clamp 9, and the arrangement of the probe fixing clamp 9 and the rotating arm 11 can facilitate the fixing of the monitoring host 1, and the position and angle of the optical fiber probe 3 can be adjusted as needed, so as to facilitate the rapid detection of the photosensitive film 6 at different positions. In the present invention, it also includes an optical fiber tube 15, and an ST interface 16 is provided on the monitoring host 1. One end of the optical fiber tube 15 is connected to the monitoring host 1 through the ST interface 16, and the other end is connected to the optical fiber probe 3. Through the optical fiber tube 15, the monitored signal can be quickly transmitted to the ST interface 16 of the monitoring host 1.

[0029] In the present invention, a USB interface 17 connected to a computer is provided on the monitoring host 1. Through the setting of the USB interface, the monitored data can be transmitted to other display devices or a computer host through the USB interface 17. In the present invention, a PH monitor is provided on the monitoring host, and the ST interface is connected to the PH monitor. Through the setting of the PH monitor, the monitoring host can accurately monitor the PH value of the cement sample in real time, which is simple and practical. The pH measurement range of the PH monitor is 0-13, and the monitoring time range of the pH monitor is 0-120 hours. In actual applications, the measurement range and monitoring time of the PH monitor can be adjusted as needed, which are all within the protection scope of the present invention.

[0030] Example

[0031] In this embodiment, a photosensitive film is attached to the inner wall of a glass container, and the photosensitive film is in direct contact with the cement sample. When the pH value of the cement sample needs to be detected, the probe holder can be rotated so that the optical fiber probe and the cement sample can be measured in a non-direct contact manner, thereby preventing the optical fiber probe from being damaged by cement during pH monitoring of the cement sample. In addition, a rotatable probe holder can be used to allow the optical fiber probe to be used for measurements at different positions and accurately aligned with the photosensitive film. Through such an arrangement, the detection device has good overall stability and a long service life, and can effectively monitor the real-time pH changes of cement.

[0032] In the figure, the description of the positional relationship is only for illustrative purposes and should not be understood as a limitation on this patent; obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A real-time monitoring device for early pH of cement components, comprising a monitoring host, a probe bracket, an optical fiber probe and a container for holding cement samples, characterized in that: The inner wall of the container is affixed with a photosensitive film, and the photosensitive film is in direct contact with the cement sample; The optical fiber probe is arranged on the probe bracket, one end of the optical fiber probe is connected to the monitoring host, and the other end is closely attached to the outer wall of the container outside the photosensitive film; The photosensitive film comprises a hollow transparent adhesive and a photosensitive layer, and the photosensitive layer is bonded to the inner wall of the container by the hollow transparent adhesive; The thickness of the photosensitive layer is 0-200 microns; The probe bracket includes a probe fixing clamp, a tightening screw, a rotating arm, a vertical cantilever, a vertical tightening screw and a base; The vertical cantilever is arranged on the base, and the rotating arm is fixed on the vertical cantilever by vertically tightening screws; The probe fixing clamp is arranged on the rotating arm by tightening the screws; The optical fiber probe is arranged on a probe fixing clamp.

2. The early pH real-time monitoring device for cement components according to claim 1 is characterized in that: It also includes an optical fiber tube. The monitoring host is provided with an ST interface. One end of the optical fiber tube is connected to the monitoring host through the ST interface, and the other end is connected to the optical fiber probe.

3. The early pH real-time monitoring device for cement components according to claim 1 is characterized in that: The monitoring host is provided with a USB interface connected to a computer.

4. The early pH real-time monitoring device for cement components according to claim 2 is characterized in that: The monitoring host is provided with a PH monitor, and the ST interface is connected to the PH monitor.

5. The early pH real-time monitoring device for cement components according to claim 4 is characterized in that: The pH measurement range of the pH monitor is 0-13, and the monitoring time range of the pH monitor is 0-120 hours.

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