PCCP stress corrosion hydrogen embrittlement testing machine
Through the PCCP stress corrosion hydrogen embrittlement test machine with integrated servo control electrical cabinet and temperature-controlled heating unit, the complexity and error problems of traditional test methods are solved, efficient and accurate test control and data feedback are achieved, and the reliability of test results is improved.
Patent Information
- Application Number
- CN202422143652.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-02
AI Technical Summary
The traditional PCCP stress hydrogen embrittlement corrosion test method has the problems of complex testing process, cumbersome operation, inaccurate temperature control, large leakage of corrosion solution and large temperature control errors, resulting in large errors in the test results and unintuitive data recording.
A PCCP stress corrosion hydrogen embrittlement test machine with integrated servo control electrical cabinet, calibration rack calibration unit, servo motor tensile unit, corrosion box unit and test fixture unit is designed to realize the full automation of sample clamping, stress loading, corrosion environment control and data acquisition and analysis, and combine the temperature-controlled heating unit to achieve accurate temperature regulation and corrosion solution management.
It improves the efficiency and accuracy of the test, reduces temperature control errors, ensures the stability of the corrosion environment and the reliability of the test results, provides accurate feedback on test parameters, and provides rich basis for data analysis.
Smart Images
Figure CN223091783U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of material testing, and more particularly, to a PCCP stress corrosion hydrogen embrittlement testing machine. Background Technique
[0002] Prestressed concrete cylinder pipe (PCCP), as a key high-performance water conveyance pipe in modern water conservancy, urban water supply, and industrial transportation systems, the quality stability and durability thereof are directly related to the safe operation of the entire system. In the mass production process of PCCP pipes, the prior testing of materials is an essential part to ensure the long-term reliability of the pipes under complex environments.
[0003] Traditional PCCP stress hydrogen embrittlement corrosion test methods adopt a split solution filling and circulating heating design, but there are problems such as complex test processes, cumbersome operations, and inaccurate temperature control. The temperature cannot be accurately controlled in real time, and there are large leakage of the corrosion solution and temperature control errors, resulting in large errors in test results. In addition, the test data recording and display methods are not intuitive, bringing a lot of inconvenience to users. Utility Model Content
[0004] To make up for the above deficiencies, this application provides a PCCP stress corrosion hydrogen embrittlement testing machine to solve the problems raised in the above background technique.
[0005] To achieve the above object, the technical solution adopted by the utility model to solve its technical problems is as follows:
[0006] A PCCP stress corrosion hydrogen embrittlement testing machine includes a servo control electrical cabinet, on the surface of which a calibration frame calibration unit and a servo motor stretching unit are installed. On the surface of the calibration frame calibration unit, a corrosion box unit is installed and is fixedly connected to the inner end of the servo motor stretching unit at one end. On the inner wall at the other end of the calibration frame calibration unit, a test fixture unit is installed. The servo motor stretching unit, the corrosion box unit, and the test fixture unit are horizontally aligned with each other. On the surface of the servo motor stretching unit, a temperature control heating unit is integrally made.
[0007] Further, the calibration frame calibration unit includes a support seat, three pull rods, and several sensors. The bottom end of the support seat is fixedly connected to one end of the surface of the servo control electrical cabinet. The two ends of the three pull rods are respectively fixedly connected to the support seat and the opposite end of the servo motor stretching unit at equal intervals. Several sensors are installed on the surface of the servo control electrical cabinet.
[0008] Further, the servo motor stretching unit includes a servo motor, a reduction motor, and a pull head. The output end of the servo motor is equipped with the reduction motor and is fixed to the other end of the surface of the servo control electrical cabinet. The pull head is installed at the outer end of the reduction motor.
[0009] Further, the corrosion box unit includes a corrosion box, a filling port, and a discharge port. The bottom end of the corrosion box is bolted to the surface of the servo control electrical cabinet, and the filling port is provided at one end, and the discharge port is provided at the other end.
[0010] Further, the test fixture unit includes a fixture body and a fixture head. The fixture body is installed on the inner wall of the support seat, and the fixture head is installed at the inner end of the fixture body.
[0011] Further, the servo control electrical cabinet includes a cabinet body and an opening / closing door. The surface of the cabinet body is respectively installed with a support seat, a sensor, a servo motor, a reduction motor, and a corrosion box, and electrical components are provided inside. The opening / closing door is installed at the opening of the side wall of the cabinet body.
[0012] The utility model has the following beneficial effects:
[0013] 1. The testing machine of the utility model highly integrates the servo control electrical cabinet, the calibration frame calibration unit, the servo motor stretching unit, the corrosion box unit, the test fixture unit, and the temperature control heating unit into a system, realizing the full automation from sample clamping, stress loading, corrosion environment control to data acquisition and analysis, greatly improving the test efficiency and accuracy.
[0014] 2. The servo motor stretching unit of the utility model combines with the temperature control heating unit, which can apply precisely controllable tensile stress to the sample, and at the same time maintain the stability and precise adjustment of the temperature in the corrosion box, effectively solving the problem of inaccurate temperature control in the traditional method and reducing the error of the test results.
[0015] 3. The design of the corrosion box unit of the utility model, including a closable corrosion box, convenient filling port and discharge port, and the test seal uses a customized silicone sheath, makes the management of the corrosion solution more convenient during the test, reduces the risk of solution leakage, ensures the stability and consistency of the corrosion environment, and thus improves the reliability of the test results.
[0016] 4. The calibration frame calibration unit of the utility model, through the setting of three tie rods and several sensors, provides an accurate calibration and measurement basis for the test, can real-time feedback various parameter changes during the test, such as stress, temperature, etc., and provides rich and accurate basis for subsequent data analysis. Description of the Drawings
[0017] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.
[0018] Figure 1 It is a schematic structural diagram of a PCCP stress corrosion hydrogen embrittlement testing machine provided by an embodiment of the present application;
[0019] Figure 2 It is a schematic labeled structural diagram of a PCCP stress corrosion hydrogen embrittlement testing machine provided by an embodiment of the present application.
[0020] In the figure: 1 - servo control electrical cabinet; 2 - calibration frame calibration unit; 3 - servo motor stretching unit; 4 - corrosion chamber unit; 5 - test fixture unit; 6 - temperature control heating unit; 21 - support base; 22 - pull rod; 23 - sensor; 31 - servo motor; 32 - reduction motor; 33 - pulling head; 41 - corrosion chamber; 42 - filling port; 43 - drain port; 51 - fixture body; 52 - fixture head; 11 - cabinet body; 12 - opening and closing door. Specific embodiments
[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments.
[0022] Embodiment:
[0023] Please refer to Figure 1 , Figure 2 , a PCCP stress corrosion hydrogen embrittlement testing machine, including a servo control electrical cabinet 1. The servo control electrical cabinet 1 selects a product in the prior art and includes a cabinet body 11 and an opening and closing door 12.
[0024] Among them, the servo control electrical cabinet 1 serves as the core control unit of the system, responsible for controlling the operation of the servo motor stretching unit 3, the temperature control heating unit 6, the corrosion chamber unit 4, and the test fixture unit 5, and collecting, processing, displaying, and recording test data. The cabinet body 11 serves as the main support structure of the entire testing machine, is made of a sturdy and durable metal material, has good load-bearing capacity and protection performance. And the surface is flat, facilitating the installation of various equipment and components. At the same time, a reasonable wiring groove and heat dissipation system are designed inside to ensure the stable operation of electrical components. The opening and closing door 12 is installed at the side wall opening of the cabinet body 11, and the opening and closing function is realized by structures such as hinges or slide rails. An observation window can be provided on the opening and closing door 12 to facilitate observing the operation of internal equipment without opening the door. A sealing strip is equipped at the door edge to ensure the sealing performance of the cabinet body 11 in the closed state and prevent dust and moisture from entering.
[0025] Please refer to Figure 1 、 Figure 2 , a PCCP stress corrosion hydrogen embrittlement testing machine, on the surface of the servo control electrical cabinet 1, a calibration frame calibration unit 2 and a servo motor stretching unit 3 are installed. On the surface of the calibration frame calibration unit 2, a corrosion chamber unit 4 is installed, and one end is fixedly connected to the inner end of the servo motor stretching unit 3. On the inner wall at the other end of the calibration frame calibration unit 2, a test fixture unit 5 is installed. The servo motor stretching unit 3, the corrosion chamber unit 4, and the test fixture unit 5 are horizontally aligned with each other. On the surface of the servo motor stretching unit 3, a temperature control heating unit 6 is integrally made. The calibration frame calibration unit 2 includes a support seat 21, three pull rods 22, and several sensors 23; the servo motor stretching unit 3 includes a servo motor 31, a reduction motor 32, and a pull head 33; the corrosion chamber unit 4 includes a corrosion chamber 41, a filling port 42, and a drain port 43; the test fixture unit 5 includes a fixture body 51 and a fixture head 52.
[0026] Among them, the calibration frame calibration unit 2 is used to calibrate the testing machine to ensure the accuracy of test force measurement. This unit is usually located on the surface of the servo control electrical cabinet for convenient operation and observation. The support base 21 serves as the basic part of the calibration frame calibration unit 2. Its bottom end is tightly connected to one end of the surface of the cabinet body 11 by bolts or welding to ensure the stability and accuracy of the entire calibration unit. It can withstand various forces and torques generated during the test. The tie rod 22 is the main force-bearing component of the calibration frame calibration unit 2 and is used to connect the support base 21 and the servo motor stretching unit 3. The three tie rods 22 are evenly distributed above the support base 21, and their two ends are respectively fixedly connected to the opposite ends of the support base 21 and the servo motor stretching unit 3 by nuts to form a stable triangular structure. This triangular structure design not only improves the stability of the calibration unit but also helps to reduce errors caused by uneven force. The sensor 23 is connected to electrical components through signal lines, and transmits the monitored data to the control system for processing and analysis. These data are crucial for evaluating the stress corrosion hydrogen embrittlement performance of the specimen.
[0027] Among them, the servo motor stretching unit 3 is used to provide a stable stretching force to achieve precise stretching and control of the specimen. This unit is usually located on one side of the calibration frame calibration unit 2. The servo motor 31 serves as the power source and uses a high-precision and high-performance motor that can precisely control the speed and torque. Its output end is connected to the reduction motor 32 through a coupling to ensure smooth and efficient power transmission. The servo motor 31 is fixed to the other end of the surface of the servo control electrical cabinet 1 through a mounting seat for convenient centralized control and maintenance. The reduction motor 32 is installed at the output end of the servo motor 31, and its main function is to reduce the speed of the servo motor 31 and increase the torque output to meet the requirements of the tensile test. The reduction motor 32 is internally provided with a reduction mechanism such as a gear set or a worm and worm gear. Through precise reduction ratio design, the conversion of speed and torque is achieved. The outer end, i.e., the output end, of the reduction motor 32 is connected to the pull head 33 through a flange or other connecting parts to ensure that the power can be smoothly transmitted to the pull head. The pull head 33 is a key component in the tensile test and is used to clamp the specimen and apply a tensile force. The design of the pull head 33 needs to consider factors such as the shape, size, and material of the specimen, and adopt an appropriate clamping mechanism and clamping force to ensure that the specimen will not slip or be damaged during the stretching process. The pull head 33 is connected to the outer end of the reduction motor 32 by bolts or other fasteners to form a stable tensile transmission chain.
[0028] Among them, the corrosion chamber unit 4 is used to store the corrosion solution and cooperate with the temperature control heating unit 6 to heat the corrosion solution to achieve temperature control. The corrosion chamber 41 is the main part of the entire corrosion chamber unit and is made of corrosion-resistant materials such as stainless steel or special plastics to ensure the structural integrity and stability when in contact with corrosive media for a long time. The bottom of the corrosion chamber 41 is designed with bolt connection holes for bolt connection with the surface of the servo control electrical cabinet 1 to achieve the stable assembly of the entire testing machine. A heating device can be configured inside the corrosion chamber 41 according to the test requirements to simulate different corrosion environmental conditions and make the test results closer to the actual situation. The filling port 42 is opened at one end of the corrosion chamber 41 for injecting corrosive media such as acidic solution, alkaline solution or solution containing specific ions into the corrosion chamber. The filling port 42 is designed with a sealing cover or valve to prevent the leakage of corrosive media during the test and facilitate cleaning and maintenance after the test. The drain port 43 is opened at the other end of the corrosion chamber 41, opposite to the filling port 42, for discharging the waste liquid or cleaning liquid after the corrosion test. The drain port 43 is also designed with a sealing cover or valve to ensure that the medium in the corrosion chamber does not leak during the test. At the same time, when discharging the waste liquid, it should be ensured that the waste liquid is properly treated before discharge to avoid environmental pollution.
[0029] Among them, the test fixture unit 5 is a key component to ensure the stable clamping of the specimen during the tensile process and to withstand the tensile force. The fixture body 51 is the main load-bearing component of the test fixture unit 5 and is usually made of high-strength and corrosion-resistant materials such as stainless steel or alloy steel. The fixture body 51 is designed to have a shape and size matching the inner wall of the support seat 21 and is installed on the support seat 21 by bolt connection or other fastening methods to ensure the stability and reliability of the fixture during the test. The inside of the fixture body 51 is designed with interfaces or slots for installing the fixture head 52 to facilitate the installation and disassembly of the fixture head. The fixture head 52 is the component directly in contact with the specimen, and its design needs to be customized according to factors such as the shape, size and material of the specimen. The surface of the fixture head 52 is usually designed with an anti-slip or biting structure to increase the friction force with the specimen and prevent the specimen from slipping or rotating during the tensile process.
[0030] Working principle of the PCCP stress corrosion hydrogen embrittlement testing machine: Before the test starts, one end of the specimen is installed in the pull head 33 and clamped, and the other end is installed in the fixture head 52 and clamped; the control system sends instructions to the servo motor 31 to control its output according to the predetermined rotational speed and torque. After the servo motor 31 operates, the power reduces the rotational speed and increases the torque through the reduction motor 32, and finally transmits to the pull head 33. After receiving the power, the pull head 33 applies a tensile force to the specimen, causing the specimen to deform in the tensile direction. At the same time, the sensor 23 monitors and records various physical quantities during the tensile process, and feeds the data back to the control system for analysis and processing. When conducting the PCCP stress corrosion hydrogen embrittlement test, an appropriate amount of corrosive medium is injected into the corrosion chamber 41 through the filling port 42, and the temperature, concentration and other parameters of the medium are adjusted by the temperature control heating unit 6 according to the test requirements. During the corrosion process, the specimen is subjected to the dual action of the tensile force and the corrosive medium, thus simulating the stress corrosion hydrogen embrittlement phenomenon in its actual use environment. After the test, the waste liquid is discharged through the drain port 43, and the corrosion chamber and the specimen are cleaned and maintained.
[0031] It should be noted that the specific model specifications of the sensor 23, the servo motor 31, the reduction motor 32, and the corrosion chamber 41 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in the field, so it will not be elaborated in detail.
[0032] The power supply and its principle of the sensor 23, the servo motor 31, and the reduction motor 32 are clear to those skilled in the art, and will not be elaborated in detail here.
[0033] For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present application is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claimed rights.
Claims
1. A PCCP stress corrosion hydrogen embrittlement testing machine, comprising a servo control electrical cabinet (1), characterized in that: A calibration frame calibration unit (2) and a servo motor stretching unit (3) are mounted on the surface of the servo control electrical cabinet (1). A corrosion box unit (4) is mounted on the surface of the calibration frame calibration unit (2), and one end is fixedly connected to the inner end of the servo motor stretching unit (3). A test fixture unit (5) is mounted on the inner wall of the other end of the calibration frame calibration unit (2). The servo motor stretching unit (3), the corrosion box unit (4), and the test fixture unit (5) are horizontally aligned with each other. A temperature control heating unit (6) is integrally formed on the surface of the servo motor stretching unit (3).
2. The PCCP stress corrosion hydrogen embrittlement testing machine according to claim 1, wherein The calibration frame calibration unit (2) includes a support base (21), three tie rods (22), and several sensors (23). The bottom end of the support base (21) is fixedly connected to one end of the surface of the servo control electrical cabinet (1). The two ends of the three tie rods (22) are respectively and equally spaced and fixedly connected to the opposite ends of the support base (21) and the servo motor stretching unit (3). Several sensors (23) are mounted on the surface of the servo control electrical cabinet (1).
3. The PCCP stress corrosion hydrogen embrittlement testing machine according to claim 2, characterized in that, The servo motor stretching unit (3) includes a servo motor (31), a reduction motor (32), and a pull head (33). The output end of the servo motor (31) is equipped with the reduction motor (32) and is fixed to the other end of the surface of the servo control electrical cabinet (1). The pull head (33) is mounted on the outer end of the reduction motor (32).
4. A PCCP stress corrosion hydrogen embrittlement testing machine according to claim 3, characterized in that The corrosion box unit (4) includes a corrosion box (41), a filling port (42), and a drain port (43). The bottom end of the corrosion box (41) is bolted to the surface of the servo control electrical cabinet (1), and a filling port (42) is provided at one end, and a drain port (43) is provided at the other end.
5. A PCCP stress corrosion hydrogen embrittlement testing machine according to claim 4, characterized in that, The test fixture unit (5) includes a fixture body (51) and a fixture head (52). The fixture body (51) is mounted on the inner wall of the support base (21), and the fixture head (52) is mounted on the inner end of the fixture body (51).
6. A PCCP stress corrosion hydrogen embrittlement testing machine according to claim 5, characterized in that, The servo control electrical cabinet (1) includes a cabinet body (11) and an opening / closing door (12). The support base (21), the sensors (23), the servo motor (31), the reduction motor (32), and the corrosion box (41) are respectively mounted on the surface of the cabinet body (11), and electrical components are provided inside. The opening / closing door (12) is mounted at the opening of the side wall of the cabinet body (11).