PCCP (prestressed concrete cylinder pipe) corrosion testing device
By designing a PCCP pipe corrosion testing device, the problem of the inability to comprehensively evaluate PCCP pipe corrosion in existing technologies has been solved. This device enables multi-factor coupled corrosion testing, simulates the real service environment, provides a comprehensive corrosion evaluation, and ensures engineering safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-03-20
AI Technical Summary
Existing technologies lack comprehensive evaluation methods for accelerated corrosion testing of PCCP pipes, and cannot effectively simulate multi-factor coupled corrosion environments, resulting in an inability to accurately assess their service life and safety.
A corrosion testing device for PCCP pipes was designed, which includes a damp heat device, a salt spray device, an aging test device, a three-electrode module, an electrochemical workstation, and a data integration module. It can simulate a multi-factor coupled corrosion environment and conduct comprehensive corrosion tests by adjusting various parameters.
This technology enables multi-factor coupled corrosion testing of PCCP pipes, simulating real service environments, providing comprehensive corrosion evaluation, and ensuring engineering safety.
Smart Images
Figure CN224019602U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to building material corrosion test technical field, specifically related to a PCCP pipe corrosion testing device. BACKGROUND
[0002] PCCP pipe (prestressed concrete cylinder pipe) is a kind of rigid pressure pipe material with higher strength and rigidity, good sealing and strong anti-permeability.The pipe combines steel cylinder, prestressed steel wire and concrete organically, gives full play to the advantages of each component material, and is widely applied in city water diversion engineering, water conservancy engineering, sewage and wastewater engineering and industrial water supply engineering, and is especially suitable for long-distance and large-diameter water conveyance engineering.
[0003] PCCP pipe is buried in soil for a long time and is eroded by corrosion factors, and with the increase of service life and the expansion of engineering scale, failure and pipe explosion accidents are inevitable.Therefore, it is necessary to carry out full-scale corrosion acceleration test before application to fully evaluate the service life of the material.Currently, the corrosion acceleration test of PCCP pipe is only aimed at a single factor, and there is lack of technical method for comprehensive evaluation of PCCP pipe corrosion. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a PCCP pipe corrosion testing device, which can comprehensively evaluate the corrosion acceleration test of PCCP pipe.
[0005] To solve the above problems, the utility model provides a PCCP pipe corrosion testing device, which comprises a test box, a humidification and heat device capable of changing the humidity and temperature in the test box, a salt fog device capable of changing the pH value and inorganic salt concentration in the test box, an aging test device capable of changing the wavelength of light source of the test box, a three-electrode module arranged in the test box, an electrochemical workstation connected with the three-electrode module, and a data integration module connected with the electrochemical workstation; the three-electrode module comprises a counter electrode, a reference electrode and a test sample, and the test sample is connected with the data integration module; the data integration module is also connected with the humidification and heat device, the salt fog device and the aging test device.
[0006] The PCCP pipe corrosion testing device can provide the humidification and heat device, the salt fog device and the aging test device, and can be used separately or simultaneously to carry out cyclic corrosion test, realize multi-factor coupling corrosion test by adjusting the parameters of each module during test, simulate the real service environment more closely, provide comprehensive corrosion evaluation for PCCP pipe corrosion, and thus provide protection for engineering safety.
[0007] In some embodiments, the wet heat device comprises a first temperature regulator and a humidity regulator. Thus, the temperature parameter is regulated by the first temperature regulator, and the humidity parameter is regulated by the humidity regulator, so as to realize the corrosion acceleration test under different humidity and temperature, and test the electrochemical behavior under different parameters, and the data is collected and processed by the data integration module.
[0008] In some embodiments, the first temperature regulator comprises a heating device and a cooling pump, and the humidity regulator comprises a water tank and a first water pump; the heating device is connected with a heating power supply. Thus, the temperature parameter is regulated by the heating device and the cooling pump, and the humidity parameter is regulated by the water tank and the first water pump.
[0009] In some embodiments, the salt spray device comprises a second temperature regulator, a pH regulator, an atomizer, a salt water tank and a second water pump. Thus, the temperature is regulated by the second temperature regulator, the pH value is regulated by the pH regulator, and the temperature, pH, inorganic salt concentration and type are regulated by the salt water tank and the second water pump, so as to realize the corrosion acceleration test under different temperature, pH value, salt concentration and salt type, and test the electrochemical behavior under different parameters, and the data is collected and processed by the data integration module.
[0010] In some embodiments, the aging test device comprises a light source and a wavelength regulator. Thus, the aging test under different wavelength light is realized by regulating the wavelength of the input light, and the electrochemical behavior under different parameters is tested, and the data is collected and processed by the data integration module.
[0011] In some embodiments, the counter electrode is a platinum electrode, and the reference electrode is a mercury-mercury electrode. Thus, the platinum electrode has good conductivity, high stability and corrosion resistance, and the mercury-mercury electrode can maintain a stable potential in a wide range. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a schematic view of the PCCP pipe corrosion test device of an embodiment of the utility model.
[0013] In the figure:
[0014] 10, test box; 20, wet heat device; 21, first temperature regulator; 22, humidity regulator; 23, cooling pump; 24, heating power supply; 25, first water pump; 30, salt spray device; 31, second temperature regulator; 32, pH regulator; 33, atomizer; 34, second water pump; 40, aging test device; 41, light source; 42, wavelength regulator; 50, three-electrode module; 51, counter electrode; 52, reference electrode; 53, test sample; 60, electrochemical workstation; 70, data integration module. DETAILED DESCRIPTION
[0015] The utility model will be described in further detail below with reference to the drawings.
[0016] In the description of the utility model, it needs to understand that, the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. The terms "include", "contain", "have" and their variants all mean "include but are not limited to", unless otherwise specifically emphasized.
[0017] Figure 1 The PCCP pipe corrosion testing device according to an embodiment of the utility model is schematically shown. The corrosion testing device comprises a test box 10, a damp-heat device 20 capable of changing the humidity and temperature in the test box 10, a salt fog device 30 capable of changing the pH value and inorganic salt concentration in the test box 10, an aging test device 40 capable of changing the wavelength of the light source 41 irradiating the test box 10, a three-electrode module 50 arranged in the test box 10, an electrochemical workstation 60 connected with the three-electrode module 50, and a data integration module 70 connected with the electrochemical workstation 60; the three-electrode module 50 comprises a counter electrode 51, a reference electrode 52 and a test sample 53, the test sample 53 is connected with the data integration module 70; the data integration module 70 is also connected with the damp-heat device 20, the salt fog device 30 and the aging test device 40.
[0018] Preferably, the counter electrode 51 is a platinum electrode, and the reference electrode 52 is a calomel electrode. In this way, the platinum electrode has good conductivity, high stability and corrosion resistance, and the calomel electrode can maintain a stable potential in a wide range. During the test, by adjusting the parameters of each module, multi-factor coupling corrosion testing can be realized, the service environment is simulated more closely, and comprehensive corrosion evaluation is provided for the corrosion of the PCCP pipe.
[0019] Example 1
[0020] The damp heat device 20 is activated to conduct an accelerated damp heat corrosion test. The damp heat device 20 includes a first temperature regulator 21 and a humidity regulator 22. The first temperature regulator 21 includes a heating device and a cooling pump 23, and the humidity regulator 22 includes a water tank and a first water pump 25. The heating device is connected to a heating power supply 24. The temperature parameter is adjusted by adjusting the first temperature regulator 21, and the humidity parameter is adjusted by adjusting the humidity regulator 22. By adjusting the humidity and temperature parameters, accelerated corrosion tests can be conducted at different humidity levels and temperatures, and the electrochemical behavior under different parameters can be tested. The data is collected and processed by the data integration module 70.
[0021] Example 2
[0022] The salt spray device 30 is activated to conduct accelerated salt spray corrosion tests. The salt spray device 30 includes a second temperature regulator 31, a pH regulator 32, an atomizer 33, a brine tank, and a second water pump 34. Thus, the temperature is adjusted by the second temperature regulator 31, the pH value is adjusted by the pH regulator 32, and in conjunction with the brine tank and the second water pump 34, parameters such as temperature, pH value, and inorganic salt concentration and type are adjusted to achieve accelerated corrosion tests at different temperatures, pH values, salt concentrations, and salt types. The electrochemical behavior under different parameters is also tested, and the data is collected and processed by the data integration module 70.
[0023] Example 3
[0024] Unlike Examples 1 and 2, Example 3 is a cyclic test. First, the salt spray device 30 is activated to conduct an accelerated salt spray corrosion test. The salt spray device 30 includes a second temperature regulator 31, a pH regulator 32, an atomizer 33, a brine tank, and a second water pump 34. Thus, by adjusting the temperature with the second temperature regulator 31 and the pH value with the pH regulator 32, and in conjunction with the brine tank and the second water pump 34, parameters such as temperature, pH, and inorganic salt concentration and type are adjusted to achieve accelerated corrosion tests at different temperatures, pH values, salt concentrations, and salt types, and to test the electrochemical behavior under different parameters. Next, the aging test device 40 is activated to conduct an aging test. The aging test device 40 includes a light source 41 and a wavelength regulator 42. Thus, by adjusting the wavelength of the input light, aging tests at different wavelengths are achieved, and the electrochemical behavior under different parameters is tested. The data is collected and processed by the data integration module 70. In this way, the salt spray device 30 and the aging test device 40 are activated alternately to achieve a cyclic test.
[0025] The table below shows the laboratory test data for Examples 1-3:
[0026]
[0027] The PCCP pipe corrosion testing device can provide a wet heat device, a salt fog device and an aging testing device, and through adjustment of characteristic parameters, specific condition testing can be realized in various types of testing, and the device can be used respectively or simultaneously, and the beneficial effect of carrying out cyclic corrosion testing can be achieved, through the electrochemical workstation, electrochemical testing is carried out on the sample in the corrosion testing system, meanwhile, through the data integration module, test data is collected and processed in real time, when testing, the parameters of each module are adjusted, multi-factor coupling corrosion testing can be realized, the simulation is closer to the real service environment, comprehensive corrosion evaluation is provided for the corrosion of the PCCP pipe, and thus the safety of engineering is ensured.
[0028] The above only describes some embodiments of the utility model. For ordinary skilled persons in the art, without departing from the creative concept of the utility model, a plurality of modifications and improvements can be made, therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope of protection of the utility model.
Claims
1. A PCCP pipe corrosion testing device, characterized in that, The system includes a test chamber, a humidity and temperature control device for changing the humidity and temperature inside the test chamber, a salt spray device for changing the pH value and inorganic salt concentration inside the test chamber, an aging test device for changing the wavelength of the light source irradiating the test chamber, a three-electrode module located in the test chamber, an electrochemical workstation connected to the three-electrode module, and a data integration module connected to the electrochemical workstation. The three-electrode module includes a counter electrode, a reference electrode, and a test sample, and the test sample is connected to the data integration module. The data integration module is also connected to the damp heat device, salt spray device, and aging test device.
2. The PCCP pipe corrosion testing device according to claim 1, characterized in that, The heat and humidity control device includes a first temperature regulator and a humidity regulator.
3. The PCCP pipe corrosion testing device according to claim 2, characterized in that, The first temperature regulator includes a heating device and a cooling pump, and the humidity regulator includes a water tank and a first water pump; the heating device is connected to a heating power supply.
4. The PCCP pipe corrosion testing device according to claim 1, characterized in that, The salt spray device includes a second temperature regulator, a pH regulator, an atomizer, a salt water tank, and a second water pump.
5. The PCCP pipe corrosion testing device according to claim 1, characterized in that, The aging test apparatus includes a light source and a wavelength adjuster.
6. The PCCP pipe corrosion testing apparatus according to any one of claims 1 to 5, characterized in that, The counter electrode is a platinum electrode, and the reference electrode is a calomel electrode.