Corrosion monitoring device for sewer pipes
By pre-embedding corrosion sensors and a floating pontoon in the sewage pipe, a monitoring device is constructed that utilizes a powered propeller and a guiding laser assembly to achieve efficient and convenient monitoring of sewage pipe corrosion, thus solving the problems of complex operation and low efficiency in existing technologies.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI ROAD & BRIDGE (GRP) CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-21
AI Technical Summary
Existing methods for monitoring corrosion in sewage pipelines are complex to operate and inefficient, making it difficult to obtain information on corrosion status effectively.
The monitoring device consists of a corrosion sensor pre-embedded in the sewage pipe and a floating vessel on the surface of the pipe. It uses a power propeller and a guide laser assembly to guide the contact data acquisition unit to contact the output port of the float and collect corrosion data in real time.
It enables efficient and convenient acquisition of information on sewage pipe corrosion, ensuring data representativeness and ease of monitoring.
Smart Images

Figure CN224535752U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of underground pipeline engineering technology, and specifically to a sewage pipeline corrosion monitoring device. Background Technology
[0002] For megacities, sewage trunk lines are often large in diameter and buried at great depths. After the sewage pipes are put into operation, as the years of use increase, the pipe structure is often corroded to varying degrees due to the high acidity or alkalinity of the sewage.
[0003] Traditional methods for monitoring sewage pipes before repair involve connecting a temporary sewage pipe, draining all the sewage from the original pipe, and then manually inspecting the pipe. This process is undoubtedly complex and inefficient. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a sewage pipeline corrosion monitoring device to solve the problems of complex and inefficient manual inspection of sewage pipeline corrosion in the prior art.
[0005] To achieve the above objectives, this utility model provides a sewage pipeline corrosion monitoring device for monitoring the internal corrosion of sewage pipelines. The corrosion monitoring device includes:
[0006] The pipeline sensing mechanism includes a corrosion sensor embedded in the top wall of the sewage pipeline, a float floating on the liquid surface inside the sewage pipeline, an output port electrically connected to the corrosion sensor and disposed on the float, and an integrated line connecting the corrosion sensor and the float.
[0007] A floating data acquisition mechanism includes a pontoon floating on the surface of the liquid inside the sewage pipe, a power propeller mounted on the pontoon, a contact data acquisition device, and a guiding laser assembly.
[0008] The floating vessel moves on the surface of the sewage pipe using a powered propeller and is guided by a guide laser assembly to contact the output port on the float. The contact data acquisition device collects monitoring data from the corrosion sensor to determine the corrosion status at that location.
[0009] By adopting this technical solution, the corrosion monitoring device is set up as two parts: a pipeline sensor mechanism pre-embedded inside the sewage pipe and a floating acquisition mechanism independent of the sewage pipe. Under normal conditions, the corrosion sensor in the pipeline sensor mechanism collects corrosion data of the pipeline in real time. When corrosion data collection is required, the main body of the floating acquisition mechanism is placed on the liquid surface inside the sewage pipe. The propeller moves on the liquid surface inside the sewage pipe and is guided by a guide laser component to contact the output port on the float. The monitoring data of the corrosion sensor is collected by the contact data acquisition device to determine the corrosion status at that location, achieving the purpose of efficiently and conveniently obtaining the corrosion status of the sewage pipe.
[0010] Furthermore, the number of pipe sensing mechanisms is the same as that of the sewage pipe unit segments, and the pipe sensing mechanism is located in the middle of the unit segment.
[0011] By adopting this technical solution, the corrosion status of each unit pipe section can be monitored synchronously, and the representativeness of the corrosion monitoring data can be guaranteed.
[0012] Furthermore, the surface of the integrated line has an anti-corrosion layer;
[0013] The integrated line contains an optical fiber that electrically connects the corrosion sensor and the output port.
[0014] By adopting this technical solution, an anti-corrosion layer is added to adapt to the corrosive environment inside the sewage pipe; placing the optical fiber inside the integrated line can both protect the optical fiber and enable electrical connection between the corrosion sensor and the output port.
[0015] Furthermore, the top of the floating vessel is provided with a guide channel that extends the entire length of the vessel;
[0016] The contact-type data acquisition device is installed on the inner wall of the guide channel.
[0017] By adopting this technical solution, the addition of a guide channel can better cooperate with the float, thereby enabling better cooperation between the contact data acquisition unit and the output port.
[0018] Furthermore, the two propeller blades are configured as a group, and the floating vessel is provided with at least three groups of propeller blades, which are arranged sequentially on three adjacent side walls of the floating vessel.
[0019] The floating vessel is equipped with batteries that supply power to the propeller blades and a controller for remote control.
[0020] By adopting this technical solution, the arrangement of three sets of power propellers on three adjacent side walls can meet the requirements for movement of the floating vessel in any direction, thereby better cooperating with the guide laser assembly for directional movement; the built-in battery and controller meet its own power needs and remote control needs.
[0021] Furthermore, the guiding laser assembly includes a laser emitter for emitting positioning laser and a laser receiver for receiving laser signals reflected from the float.
[0022] By adopting this technical solution, the laser transmitter and laser receiver work together to determine the distance between the pontoon and the pontoon, as well as the accuracy of the pontoon's direction of movement, based on the reflection of the pontoon and whether or not it reflects. This guides the movement of the pontoon and ensures that the contact data acquisition device on the pontoon can work with the output port on the pontoon to collect data for the purpose of judging the corrosion situation.
[0023] Compared with the prior art, this utility model has the following advantages:
[0024] When acquiring information on pipeline corrosion, the floating acquisition mechanism can move along the surface of the sewage pipeline and cooperate with the pipeline sensing mechanism inside the sewage pipeline to acquire the sewage pipeline corrosion data collected by the pipeline sensing mechanism. Subsequently, the corrosion data can be used to determine the corrosion status of the sewage pipeline at the relevant location, achieving the goal of efficiently and conveniently acquiring information on sewage pipeline corrosion. Attached Figure Description
[0025] Figure 1 This is a cross-sectional schematic diagram of the sewage pipeline corrosion monitoring device of this utility model during use;
[0026] Figure 2 This is a schematic diagram of the pipeline sensing mechanism in the sewage pipeline corrosion monitoring device of this utility model;
[0027] Figure 3 This is a schematic diagram of the floating collection mechanism in the sewage pipeline corrosion monitoring device of this utility model;
[0028] Figure 4 This is a schematic diagram showing the installation position of the guide laser component in the sewage pipeline corrosion monitoring device of this utility model;
[0029] Figure 5 This is a schematic diagram showing the usage status of the sewage pipeline corrosion monitoring device of this utility model.
[0030] Explanation of reference numerals in the attached diagram: 1. Corrosion sensor; 2. Integrated line; 3. Float; 4. Output port; 5. Float; 6. Power propeller; 7. Guide channel; 8. Contact data acquisition unit; 9. Guided laser assembly; 10. Sewage pipe. Detailed Implementation
[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0032] Please refer to the appendix. Figure 1 This utility model provides a sewage pipeline corrosion monitoring device for monitoring the internal corrosion of sewage pipeline 10. The corrosion monitoring device includes: a pipeline sensing mechanism. Please refer to the attached document. Figure 2 As shown, it has a corrosion sensor 1 embedded in the top wall of the sewage pipe 10, a float 3 floating on the liquid surface inside the sewage pipe 10, an output port 4 electrically connected to the corrosion sensor 1 and located on the float 3, and an integrated line 2 connecting the corrosion sensor 1 and the float 3; for the floating acquisition mechanism, please refer to the appendix. Figure 3 and attached Figure 4 The device includes a floating vessel 5 that floats on the surface of the liquid inside the sewage pipe 10, a power propeller 6 installed on the floating vessel 5, a contact data acquisition device 8, and a guiding laser assembly 9. The floating vessel 5 moves on the surface of the liquid inside the sewage pipe 10 by means of the power propeller 6, and guides the contact data acquisition device 8 to contact the output port 4 on the float 3 by means of the guiding laser assembly 9. The contact data acquisition device 8 collects the monitoring data of the corrosion sensor 1 to determine the corrosion status at that location.
[0033] The corrosion monitoring device consists of two parts: a pipeline sensor mechanism embedded inside the sewage pipe 10 and a floating acquisition mechanism independent of the sewage pipe 10. Under normal conditions, the corrosion sensor 1 in the pipeline sensor mechanism collects corrosion data of the pipe in real time. When corrosion data collection is required, the floating acquisition mechanism's main body, the pontoon 5, is placed on the liquid surface inside the sewage pipe 10 and moved on the liquid surface by the propeller 6. (See attached diagram.) Figure 5 As shown, the contact data acquisition unit 8 is guided to contact the output port 4 on the float 3 by means of the guide laser assembly 9, so that the monitoring data of the corrosion sensor 1 is collected by the contact data acquisition unit 8 to determine the corrosion status at that location, thereby achieving the purpose of efficiently and easily obtaining corrosion data of the sewage pipe 10.
[0034] The number of pipe sensing mechanisms is the same as that of the sewage pipe 10, and the pipe sensing mechanism is located in the middle of the pipe section; this enables synchronous monitoring of corrosion in each pipe section and ensures the representativeness of the corrosion monitoring data.
[0035] The surface of the integrated line 2 has an anti-corrosion layer, which is added to adapt to the corrosive environment inside the sewage pipe 10. The integrated line 2 has an optical fiber that electrically connects the corrosion sensor 1 and the output port 4. Placing the optical fiber inside the integrated line 2 can both protect the optical fiber and enable the electrical connection between the corrosion sensor 1 and the output port 4.
[0036] Please refer to the appendix. Figure 3The top of the floating vessel 5 has a guide channel 7 that runs the entire length; the contact data acquisition device 8 is installed on the inner wall of the guide channel 7; the addition of the guide channel 7 can better cooperate with the buoy 3, and thus the contact data acquisition device 8 can better cooperate with the output port 4.
[0037] Furthermore, in order to reduce the difficulty of the float 3 falling into the guide channel 7, the guide channel 7 can be set as an flared type facing the float 3;
[0038] Furthermore, in order to ensure the cooperation between the contact data acquisition unit 8 in the guide channel 7 and the output port 4 on the float 3, magnets can be set at the positions of the contact data acquisition unit 8 and the output port 4 respectively.
[0039] Two power propellers 6 are set as a group, and the floating vessel 5 is equipped with at least three groups of power propellers 6. The three groups of power propellers 6 are arranged sequentially on three adjacent side walls of the floating vessel 5. The arrangement of the three groups of power propellers 6 on the three adjacent side walls can meet the requirements of the floating vessel 5 to move in any direction, thereby better cooperating with the guide laser assembly 9 for directional movement. The floating vessel 5 is equipped with a battery that supplies power to the power propellers 6 and a controller for remote control. It has its own battery and controller to meet its own power needs and remote control needs.
[0040] It should be noted that the power propeller 6 consists of two parts: the propeller body and the motor that drives the propeller body to rotate. In this application, the motor is embedded inside the floating vessel 5, so the relevant drawings are not shown.
[0041] The guiding laser assembly 9 includes a laser transmitter for emitting positioning laser and a laser receiver for receiving laser signals reflected from the buoy 3. The laser transmitter and laser receiver work together to determine the distance between the buoy 5 and the buoy 3 and whether the buoy 5 is moving accurately based on the reflection of the buoy 3 and whether the buoy 5 is reflected. This guides the movement of the buoy 5 and ensures that the contact data acquisition device 8 on the buoy 5 can cooperate with the output port 4 on the buoy 3 to achieve data acquisition for the purpose of judging the corrosion situation.
[0042] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.
Claims
1. A sewage pipeline corrosion monitoring device, used to monitor the internal corrosion of sewage pipelines, characterized in that, The corrosion monitoring device includes: The pipeline sensing mechanism includes a corrosion sensor embedded in the top wall of the sewage pipeline, a float floating on the liquid surface inside the sewage pipeline, an output port electrically connected to the corrosion sensor and disposed on the float, and an integrated line connecting the corrosion sensor and the float. A floating data acquisition mechanism includes a pontoon floating on the surface of the liquid inside the sewage pipe, a power propeller mounted on the pontoon, a contact data acquisition device, and a guiding laser assembly. The floating vessel moves on the surface of the sewage pipe by means of a powered propeller, and guides a contact data acquisition device to contact the output port on the float with the help of the guide laser assembly. The contact data acquisition device then collects monitoring data from the corrosion sensor to determine the corrosion status at that location.
2. The sewage pipeline corrosion monitoring device according to claim 1, characterized in that: The number of pipe sensing mechanisms is the same as the number of unit pipe sections in the sewage pipe, and the pipe sensing mechanism is located in the middle of the unit pipe section.
3. The sewage pipeline corrosion monitoring device according to claim 1, characterized in that: The surface of the integrated line has an anti-corrosion layer; The integrated line contains an optical fiber that electrically connects the corrosion sensor and the output port.
4. The sewage pipeline corrosion monitoring device according to claim 1, characterized in that: The top of the floating vessel is provided with a guide channel that extends the entire length; The contact-type data acquisition device is installed on the inner wall of the guide channel.
5. The sewage pipeline corrosion monitoring device according to claim 1, characterized in that: Two of the aforementioned propeller blades are configured as a group, and the floating vessel is provided with at least three groups of propeller blades, which are arranged sequentially on three adjacent side walls of the floating vessel. The floating vessel is equipped with batteries that supply power to the propeller blades and a controller for remote control.
6. The sewage pipeline corrosion monitoring device according to claim 5, characterized in that: The guiding laser assembly includes a laser transmitter for emitting positioning laser and a laser receiver for receiving laser signals reflected from the float.