An ultrahigh-temperature pipeline burst test device

Abstract

The utility model provides a kind of ultrahigh temperature pipeline burst test device, it solves the problems such as ultrahigh temperature burst test pressure and temperature control, it includes test bin, test bin is built in and is connected with the servo supercharging system of test pipeline, induction heating assembly and infrared temperature measurement component are installed in test bin opposite test pipeline, servo supercharging system, induction heating assembly and infrared temperature measurement component are connected with electric control system.The utility model has the advantages such as good pressure temperature control effect, stable operation etc.

Description

Technical Field

[0001] This utility model belongs to the field of high-pressure pipeline testing technology, specifically relating to an ultra-high temperature pipeline burst test device. Background Technology

[0002] The pressure resistance of high-pressure pipelines in diesel engines can generally reach over 500 MPa. However, in actual severe vehicle accidents, high-pressure pipelines may rupture. The reason for this is likely that after a localized fire, if the high-pressure pipeline is directly exposed to the extremely high temperatures of the fire, the mechanical properties of the metal material will significantly decrease at high temperatures, thus affecting the pressure resistance and burst resistance of the high-pressure pipeline. Analyzing such safety accidents requires verifying the relationship between the pressure resistance of high-pressure pipelines under extremely high temperatures (e.g., above 600°C) and temperature. However, current conventional burst testing equipment primarily focuses on room temperature bursts, with some devices using high and low temperature chambers to achieve burst tests at even higher temperatures (e.g., below 200°C). There is no safe, reliable, and precisely controlled solution for ultra-high temperature and high-pressure burst tests above 600°C. This gap in research severely hinders the study of the pressure resistance of high-pressure pipelines under extremely high temperature conditions. Furthermore, gasoline engines and other similar applications of high-pressure pipelines face the same problem.

[0003] To address the shortcomings of existing technologies, people have conducted long-term explorations and proposed various solutions. For example, Chinese patent literature discloses a high-temperature burst pressure control system and method for pipes [201910911236.3], which includes: a high-temperature device for heating the pipe to be tested; a cooling device for cooling the liquid flowing out of the pipe to be tested; a hydraulic pressure device for adjusting the hydraulic pressure in the pipe to be tested; a pressure sensor for detecting the pressure value of the liquid in the pipe to be tested; a temperature sensor for measuring the temperature of the high-temperature device; and a control device; the control device obtains the pressure value from the pressure sensor and the temperature value from the temperature sensor; the control device is also connected to the hydraulic pressure device, and when the control device determines that the obtained temperature value has not reached the preset temperature value and the obtained pressure value does not meet the preset conditions, it controls the hydraulic pressure device to adjust the hydraulic pressure in the pipe to be tested until the pressure value obtained by the control device meets the preset conditions.

[0004] The above solution has solved the problem of pressure test accuracy to a certain extent, but it still has many shortcomings, such as the control of pressure and temperature in ultra-high temperature burst tests. Utility Model Content

[0005] The purpose of this invention is to address the above-mentioned problems by providing a reasonably designed ultra-high temperature pipeline burst test device with good pressure and temperature control.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an ultra-high temperature pipeline burst test device, comprising a test chamber, a servo booster system connected to the test pipeline is built into the test chamber, an induction heating component and an infrared temperature measuring component are installed in the test chamber opposite to the test pipeline, and the servo booster system, the induction heating component and the infrared temperature measuring component are connected to the electrical control system.

[0007] In the above-mentioned ultra-high temperature pipeline burst test device, the test chamber includes a base plate, a fixed support base on the base plate and a connector connected thereto. One end of the connector is connected to the servo booster system, and the other end of the connector is connected to the test pipeline, and the other end of the test pipeline is sealed by a plug.

[0008] In the aforementioned ultra-high temperature pipeline burst test device, the servo booster system includes a hydraulic pump connected to an oil tank, a hydraulic pump connected to a booster cylinder via a hydraulic valve, a booster cylinder connected to a test pipeline via a servo valve, a pressure sensor connected between the servo valve and the test pipeline, and a pressure relief solenoid valve connected to the oil tank.

[0009] In the aforementioned ultra-high temperature pipeline burst test device, the induction heating component includes an induction coil connected to a heating power supply, and the heating power supply and the induction coil are equipped with a water chiller.

[0010] In the aforementioned ultra-high temperature pipeline burst test device, the infrared temperature measurement component includes an infrared temperature sensor that is opposite to the surface of the test pipeline.

[0011] In the aforementioned ultra-high temperature pipeline burst test device, the electrical control system includes a main control unit connected to a signal acquisition module. The signal acquisition module acquires the pressure signal from the servo boosting system and the temperature signal from the infrared temperature measuring component in real time and fits the two signals into a real-time corresponding curve. The main control unit is also connected to a pressure signal output module, which outputs a voltage signal to the servo boosting system to control the test pressure. During the boosting phase, linear boosting is performed, and during the pressure holding phase, the pressure is adjusted in real time according to the pressure signal. Finally, the main control unit is connected to a temperature signal output module, which outputs a current signal to the induction heating component to control the test temperature.

[0012] A method for testing the bursting of ultra-high temperature pipelines, employing the aforementioned ultra-high temperature pipeline bursting test apparatus, includes the following steps:

[0013] S1: Test preparation, installation of test piping and system check;

[0014] S2: Test control, including heating and pressure control, and data acquisition and synchronization;

[0015] S3: Burst monitoring, including temperature and pressure monitoring, and termination of the test;

[0016] S4: Post-test processing.

[0017] In the above-mentioned method for testing the bursting of ultra-high temperature pipelines, the heating control in step S2 includes the following steps:

[0018] S21: Set the target temperature and heating mode via the electronic control system;

[0019] S22: Start the induction heating component. The heating power supply outputs a high-frequency current to the induction coil to locally heat the test pipeline.

[0020] S23: The infrared temperature measurement component monitors the surface temperature of the test pipeline in real time and feeds the data back to the electrical control system;

[0021] S24: The electronic control system dynamically adjusts the output power of the heating power supply through the PID algorithm to achieve closed-loop temperature control.

[0022] In the above-mentioned method for testing the burst of an ultra-high temperature pipeline, the pressure control in step S2 includes the following steps:

[0023] S25: Set the target pressure and boosting mode via the electronic control system;

[0024] S26: Start the servo booster system. The hydraulic pump draws oil from the oil tank and controls the flow to the booster cylinder through the hydraulic valve. The booster cylinder pressurizes the hydraulic oil and then inputs it into the test pipeline through the servo valve.

[0025] S27: The pressure sensor monitors the internal pressure of the test pipeline in real time and feeds the data back to the electrical control system;

[0026] S28: The electronic control system dynamically adjusts the pressure through a servo valve to compensate for pressure fluctuations caused by liquid vaporization in real time during the pressure holding stage.

[0027] In the above-mentioned method for testing the bursting of ultra-high temperature pipelines, in step S2, the data acquisition and synchronization are performed by synchronously acquiring pressure and temperature signals through an electronic control system and fitting them into a real-time corresponding curve to monitor whether the pressure and temperature have reached the predicted bursting conditions.

[0028] Compared with existing technologies, the advantages of this utility model are as follows: the pressure and temperature of the test pipeline are controlled independently by a closed loop, and the dual closed loop control structure ensures the accuracy of the test control; the test chamber has a self-locking structure, which can seal the test pipeline port and maintain airtightness under high pressure; the servo valve realizes dynamic pressure compensation to avoid pressure fluctuations caused by liquid vaporization; high-frequency induction heating can realize local ultra-high temperature rapid heating, and the water cooling system ensures stable operation of the equipment. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is another structural schematic diagram of the present invention;

[0031] Figure 3 This is the control principle diagram of this utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the test chamber of this utility model;

[0033] In the diagram, the components are: test chamber 1, base plate 11, support base 12, connector 13, plug 14, servo booster system 2, oil tank 21, hydraulic pump 22, hydraulic valve 23, booster cylinder 24, servo valve 25, pressure sensor 26, pressure relief solenoid valve 27, induction heating assembly 3, heating power supply 31, induction coil 32, water chiller 33, infrared temperature measurement assembly 4, infrared temperature sensor 41, electrical control system 5, main control unit 51, signal acquisition module 52, pressure signal output module 53, and temperature signal output module 54. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 1-4 As shown, an ultra-high temperature pipeline burst test device includes a test chamber 1, which is typically equipped with an explosion-proof enclosure to ensure test safety. The test chamber 1 houses a servo pressurization system 2 connected to the test pipeline. Inside the test chamber 1 are an induction heating component 3 and an infrared temperature measuring component 4, positioned opposite the test pipeline. The servo pressurization system 2 fills the test pipeline with oil and monitors internal pressure changes in real time. The induction heating component 3 and the infrared temperature measuring component 4 use feedback regulation for temperature control. The servo pressurization system 2, the induction heating component 3, and the infrared temperature measuring component 4 are connected to an electronic control system 5, achieving precise closed-loop control of the test pressure and heating temperature. This allows for accurate testing of various stringent high-temperature and high-pressure burst tests, such as burst failure temperature under specific high pressure or burst failure pressure under specific high temperature.

[0036] Specifically, the test chamber 1 includes a base plate 11, on which a fixed support base 12 is attached and connected to a connector 13. One end of the connector 13 is connected to the servo booster system 2, and the other end of the connector 13 is connected to the test pipeline. The other end of the test pipeline is sealed by a plug 14, thereby sealing the high-pressure oil in the test pipeline.

[0037] In detail, the servo booster system 2 includes a hydraulic pump 22 connected to the oil tank 21. The hydraulic pump 22 is connected to the booster cylinder 24 via a hydraulic valve 23. The hydraulic valve 23 can precisely control the oil circuit opening and closing and the flow rate to achieve stable pressurization. The booster cylinder 24 is connected to the test pipeline via a servo valve 25. A pressure sensor 26 and a pressure relief solenoid valve 27 connected to the oil tank 21 are connected between the servo valve 25 and the test pipeline. The servo valve 25 can achieve high-precision pressure regulation, while the pressure relief solenoid valve 27 is used for emergency pressure relief to ensure test safety. The servo valve 25 and the booster cylinder 24, as the main actuators for pressure control, dynamically respond to and adjust the test pressure during operation through the electronic control system 5, thereby achieving closed-loop control. In the high-temperature explosion test, liquid vaporization is involved. Without the servo valve 25 and the pressure relief solenoid valve 27, the closed cavity will cause significant pressure fluctuations inside the test pipeline, making it impossible to achieve controllable pressure testing.

[0038] Furthermore, the induction heating component 3 includes an induction coil 32 connected to a heating power supply 31. The heating power supply 31 can output high-frequency alternating current, causing the induction coil 32 to generate an alternating magnetic field, which induces eddy currents in the test pipeline to achieve rapid and uniform heating. The heating power supply 31 and the induction coil 32 are equipped with a water chiller 33. The output power of the heating power supply 31 is dynamically controlled based on the data collected by the infrared temperature measuring component 4, and the water chiller 33 actively cools the sample, thereby achieving closed-loop control of the sample temperature.

[0039] Furthermore, the infrared temperature measurement component 4 includes an infrared temperature sensor 41 that is opposite to the surface of the test pipeline. It uses infrared light sensing to perform non-contact detection of the surface temperature of the test pipeline, which is suitable for ultra-high temperature environments and covers the entire length of the test pipeline.

[0040] In addition, the electronic control system 5 includes a main control unit 51, which is connected to a signal acquisition module 52. The signal acquisition module 52 acquires the pressure signal of the servo boosting system 2 and the temperature signal of the infrared temperature measuring component 4 in real time and fits the two signals into a real-time corresponding curve. This curve can intuitively reflect the temperature-pressure coupling relationship and provide data support for blast prediction. The main control unit 51 is connected to a pressure signal output module 53, which outputs a voltage signal to the servo boosting system 2 to control the test pressure. In the boosting stage, linear boosting is performed, and in the holding stage, the pressure is adjusted in real time according to the pressure signal to avoid the influence of liquid temperature rise and local liquid vaporization on the holding pressure. The main control unit 51 is connected to a temperature signal output module 54, which outputs a current signal to the induction heating component 3 to control the test temperature. Various modes such as uniform heating, stable holding, or stepped heating can be realized.

[0041] Example 1

[0042] In this embodiment, the test chamber 1 constitutes the core protective space, within which a support base 12 and a connector 13 for connecting the test pipeline are installed. The servo booster system 2 fills the test pipeline with high-pressure oil through the connector 13 and monitors the pressure; the induction heating component 3 and the infrared temperature measuring component 4 are respectively positioned facing the test pipeline for heating and temperature monitoring. The electrical control system 5 is electrically connected to the servo booster system 2, the induction heating component 3, and the infrared temperature measuring component 4, integrating pressure and temperature signals to achieve precise closed-loop control of the test pressure and heating temperature, thereby enabling accurate testing of the burst failure temperature under specific high pressure or the burst failure pressure under specific high temperature.

[0043] A method for testing the bursting of ultra-high temperature pipelines, employing the aforementioned ultra-high temperature pipeline bursting test apparatus, includes the following steps:

[0044] S1: Test preparation, installation of test piping and system check;

[0045] S2: Test control, including heating and pressure control, and data acquisition and synchronization;

[0046] S3: Burst monitoring, including temperature and pressure monitoring, and termination of the test;

[0047] S4: Post-test processing.

[0048] In addition, the heating control in step S2 includes the following steps:

[0049] S21: Set the target temperature and heating mode via the electronic control system 5;

[0050] S22: Start the induction heating component 3. The heating power supply 31 outputs a high-frequency current to the induction coil 32 to locally heat the test pipeline. The frequency of the high-frequency current is optimized according to the pipeline material and size to improve thermal efficiency.

[0051] S23: Infrared temperature measurement component 4 monitors the surface temperature of the test pipeline in real time and feeds the data back to the electrical control system 5;

[0052] S24: The electronic control system 5 dynamically adjusts the output power of the heating power supply 31 through the PID algorithm to perform closed-loop temperature control; the PID parameters can be adaptively tuned according to the temperature rise curve to avoid overshoot or oscillation.

[0053] Meanwhile, pressure control in step S2 includes the following steps:

[0054] S25: Set the target pressure and boosting mode via the electronic control system 5;

[0055] S26: Start the servo booster system 2. The hydraulic pump 22 draws oil from the oil tank 21 and the hydraulic valve 23 controls the flow to the booster cylinder 24. The booster cylinder 24 pressurizes the hydraulic oil and inputs it into the test pipeline through the servo valve 25. The booster cylinder 24 adopts a multi-stage booster structure, which can achieve high pressure output.

[0056] S27: Pressure sensor 26 monitors the internal pressure of the test pipeline in real time and feeds the data back to the electronic control system 5;

[0057] S28: The electronic control system 5 dynamically adjusts the pressure through the servo valve 25 to compensate for pressure fluctuations caused by liquid vaporization in real time during the pressure holding stage; it adopts a feedforward-feedback composite control strategy to improve pressure control accuracy and response speed.

[0058] As can be seen, in step S2, the data acquisition and synchronization are carried out by the electronic control system 5, which synchronously acquires pressure and temperature signals and fits them into real-time corresponding curves to monitor whether the pressure and temperature have reached the predicted burst conditions. The system has an automatic stop function, which can immediately terminate the test when a sudden drop in pressure or abnormal temperature is detected to ensure safety.

[0059] Example 2

[0060] This implementation employs high-precision pressure control. Hydraulic pump 22 draws oil from oil tank 21, which then flows to booster cylinder 24 via hydraulic valve 23. The high-pressure oil output from booster cylinder 24 enters the test pipeline after precise control via servo valve 25. Pressure sensor 26 monitors the pipeline pressure in real time and feeds it back to the electronic control system 5. Servo valve 25, as the core regulating element, dynamically adjusts the pressure according to the instructions of the electronic control system 5, achieving closed-loop control. A pressure relief solenoid valve 27 is connected to the oil line for rapid pressure relief in emergencies, ensuring system safety.

[0061] Example 3

[0062] This embodiment employs dynamic temperature control. The heating power supply 31 provides high-frequency alternating current to generate an alternating magnetic field in the induction coil 32, which heats the test pipeline using eddy current heating. A water chiller 33 is also provided for cooling. The infrared temperature measurement component 4 includes an infrared temperature sensor 41, which non-contactly monitors the temperature distribution across the entire surface of the test pipeline. The temperature data collected by the infrared temperature sensor 41 is fed back to the electronic control system 5 in real time. The electronic control system 5 dynamically adjusts the output power of the heating power supply 31 using a PID algorithm, thereby achieving precise closed-loop control of the test pipeline temperature.

[0063] Example 4

[0064] In this embodiment, intelligent electronic control and testing are implemented. The signal acquisition module 52 simultaneously acquires the pressure signal from the pressure sensor 26 and the temperature signal from the infrared temperature sensor 41, and fits the two signals into a real-time corresponding temperature-pressure curve. The pressure signal output module 53 and the temperature signal output module 54 output control signals to the servo booster system 2 and the induction heating component 3, respectively.

[0065] In summary, the principle of this embodiment is as follows: the servo booster system 2 and the induction heating component 3 are controlled in a closed loop by the electronic control system 5, and high-precision feedback is achieved with the help of the infrared temperature measurement component 4 and the pressure sensor 26, so as to dynamically reproduce the service environment of extreme coupling of ultra-high temperature and high pressure on the test pipeline; the system synchronously collects temperature and pressure signals and fits them into real-time curves to accurately determine the burst limit of pipeline materials at high temperature or study their failure mechanism.

[0066] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0067] Although this paper frequently uses terms such as test chamber 1, base plate 11, support base 12, connector 13, plug 14, servo booster system 2, oil tank 21, hydraulic pump 22, hydraulic valve 23, booster cylinder 24, servo valve 25, pressure sensor 26, pressure relief solenoid valve 27, induction heating component 3, heating power supply 31, induction coil 32, water chiller 33, infrared temperature measurement component 4, infrared temperature sensor 41, electrical control system 5, main control unit 51, signal acquisition module 52, pressure signal output module 53, and temperature signal output module 54, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A high-temperature pipeline burst test device, comprising a test chamber (1), characterized in that, The test chamber (1) is equipped with a servo booster system (2) connected to the test pipeline. The test chamber (1) is equipped with an induction heating component (3) and an infrared temperature measuring component (4) opposite to the test pipeline. The servo booster system (2), the induction heating component (3) and the infrared temperature measuring component (4) are connected to the electronic control system (5).

2. The ultra-high temperature pipeline burst test device according to claim 1, characterized in that, The test chamber (1) includes a base plate (11), a fixed support base (12) is fixed on the base plate (11) and a connector (13) is connected thereto. One end of the connector (13) is connected to the servo booster system (2), and the other end of the connector (13) is connected to the test pipeline and the other end of the test pipeline is closed by a plug (14).

3. The ultra-high temperature pipeline burst test device according to claim 1, characterized in that, The servo booster system (2) includes a hydraulic pump (22) connected to an oil tank (21), and the hydraulic pump (22) is connected to a booster cylinder (24) via a hydraulic valve (23).

4. The ultra-high temperature pipeline burst test device according to claim 3, characterized in that, The booster cylinder (24) is connected to the test pipeline via a servo valve (25). A pressure sensor (26) and a pressure relief solenoid valve (27) connected to the oil tank (21) are connected between the servo valve (25) and the test pipeline.

5. The ultra-high temperature pipeline burst test device according to claim 1, characterized in that, The induction heating assembly (3) includes an induction coil (32) connected to a heating power supply (31).

6. The ultra-high temperature pipeline burst test device according to claim 5, characterized in that, The heating power supply (31) and the induction coil (32) are equipped with a water chiller (33).

7. The ultra-high temperature pipeline burst test device according to claim 1, characterized in that, The infrared temperature measurement component (4) includes an infrared temperature sensor (41) opposite to the surface of the test pipeline.

8. The ultra-high temperature pipeline burst test device according to claim 1, characterized in that, The electronic control system (5) includes a main control unit (51), which is connected to a signal acquisition module (52). The signal acquisition module (52) acquires the pressure signal of the servo booster system (2) and the temperature signal of the infrared temperature measurement component (4) in real time and fits the two signals into a real-time corresponding curve.

9. The ultra-high temperature pipeline burst test device according to claim 8, characterized in that, The main control unit (51) is connected to a pressure signal output module (53). The pressure signal output module (53) outputs a voltage signal to the servo boosting system (2) to control the test pressure. It performs linear boosting during the boosting stage and adjusts the pressure in real time according to the pressure signal during the pressure holding stage.

10. The ultra-high temperature pipeline burst test device according to claim 9, characterized in that, The main control unit (51) is connected to a temperature signal output module (54), which outputs a current signal to the induction heating component (3) to control the test temperature.

Images