Pressure relief and recovery detection system

Abstract

The invention provides a pressure relief and recovery detection system, and belongs to the technical field of pressure equalizing and pressure resistance experiment application. The pressure relief and recompression detection system comprises an air pipe, a pressure chamber, an air compression pump, a sealing cover, a safety pressure relief valve, a precise pressure gauge, a control system and software. The air compression pump is used for compressing air, so that the control system is used for controlling the start and stop of the pressure relief and recompression detection system; the software is used for setting experiment parameters of a compression resistance experiment and detecting operation of the system; the software comprises an alarm system, when the air pressure value in the pressure chamber exceeds a set value, the alarm system is triggered, and the alarm system comprises an overpressure protection system and a limit overpressure protection system. According to the pressure relief and re-pressure detection system, the proceeding condition of the pressure equalizing and pressure resisting experiment can be detected in real time, the pressure relief condition of the pressure equalizing and pressure resisting experiment device is accurately detected, and the accuracy of the pressure equalizing and pressure resisting experiment result is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure equalization and pressure resistance test applications, and in particular to a pressure relief and re-pressure detection system. Background Art

[0002] The main purpose of the compression test is to test the bearing capacity of an object or material under different pressures to evaluate its compressive performance. This helps to understand the deformation, failure characteristics and ultimate strength of the material when subjected to stress, and provides a basis for engineering design and material selection. The compression test requires the application of pressure values ​​of different magnitudes to test the bearing capacity of the object under different pressures. The pressure value is one of the key parameters in the compression test, and the pressure application speed is another important parameter in the compression test. The test results of fast and slow pressure application speeds may be significantly different; when conducting a compression test, it is necessary to ensure that the quality and shape of the specimen meet the experimental requirements. The accuracy and stability of the experimental equipment have an important influence on the experimental results, so the equipment needs to be calibrated and maintained regularly. During the experiment, it is necessary to pay close attention to the deformation and failure of the specimen and record the relevant data in a timely manner. After the experiment, the experimental data needs to be processed and analyzed to obtain accurate experimental results and conclusions.

[0003] The main purpose of the pressure equalization test is to test the stability, reliability and performance of a system or device under uniform pressure. By simulating the uniform pressure conditions that may be encountered in the actual working environment, the pressure bearing capacity, sealing performance and possible defects or weaknesses of the system or device can be evaluated. The pressure equalization test is based on the principle of pressure balance, that is, during the experiment, by applying uniform pressure, the pressure inside the system or device reaches a state of equilibrium with the external pressure. In this state, abnormal conditions such as deformation, leakage, rupture, etc. of the system or equipment can be observed, and its performance can be evaluated accordingly.

[0004] However, in existing pressure equalization and pressure resistance experiments, there is often a situation where the pressure equalization and pressure resistance experiment devices release pressure, which affects the accuracy of the experimental results. Based on this, it is of great practical significance to provide a detection system that can detect pressure release and re-pressure in real time. Summary of the invention

[0005] The object of the present invention is to provide a pressure relief and re-pressure detection system, aiming to solve the technical problem in the prior art that the pressure equalization and pressure resistance test devices release pressure, thus affecting the accuracy of the test results.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0007] The present invention provides a pressure relief and re-pressure detection system, comprising: a pressurization experimental device, a control system and software;

[0008] The pressurized experimental device comprises an air pipe, an air pump, a pressure chamber, an air compression pump, a sealing cover, a safety pressure relief valve and a precision pressure gauge;

[0009] The control system is used to control the start and stop of the pressure relief and re-pressure detection system;

[0010] The software is used to set the experimental parameters of the pressure test and the operation of the detection system; the software includes an alarm system, which is triggered when the air pressure value in the pressure chamber exceeds the set value.

[0011] Furthermore, the alarm system includes an overpressure protection system and an extreme overpressure protection system.

[0012] Furthermore, when the air pressure in the pressure chamber reaches a first specified value, the overpressure protection system is triggered, and the user checks the pressurization experiment device based on the alarm signal; when the air pressure value in the pressure chamber reaches a second specified value, the extreme overpressure protection system is triggered, and the alarm signal triggers the control system to automatically shut down the experiment.

[0013] Furthermore, the first specified value and the second specified value are values ​​set by the user according to actual experimental conditions.

[0014] Furthermore, the parameters that can be set by the software include the experimental target pressure value, air pressure increase rate, pressure holding time and air pressure release rate.

[0015] Furthermore, a flow meter is provided in the air pipe for calculating the gas input into the pressure chamber by the air compression pump.

[0016] Furthermore, the safety pressure relief valve is used to relieve the pressure of the pressure chamber after the experiment is completed.

[0017] Furthermore, the sealing cover is used to seal the pressure chamber to ensure that there is no pressure release during the experiment.

[0018] Furthermore, the precision pressure gauge can detect the pressure value in the pressure chamber in real time to observe the progress of the experiment.

[0019] The present invention also provides the application of the pressure relief and re-pressure detection system described in the above technical solution in pressure equalization and pressure resistance experiments.

[0020] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0021] The pressure relief and re-pressure detection system of the present invention can detect the progress of the pressure equalization and pressure resistance test in real time, accurately detect the pressure relief of the pressure equalization and pressure resistance test device, further improve the accuracy of the pressure equalization and pressure resistance test results, and does not need to add any new detection equipment. It has low investment and operation costs, is easy to operate, and has high safety. It can be better used to determine the adaptability of components, equipment or other products to high pressure environments during storage, transportation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a circuit schematic diagram of the pressure relief and re-pressure detection system of the present invention;

[0023] Figure 2 It is a simplified schematic diagram of the pressure relief and re-pressure detection system of the present invention. DETAILED DESCRIPTION

[0024] The present invention provides a pressure relief and re-pressure detection system, comprising: a pressurization experimental device, a control system and software;

[0025] The pressurized experimental device comprises an air pipe, an air pump, a pressure chamber, an air compression pump, a sealing cover, a safety pressure relief valve and a precision pressure gauge;

[0026] The control system is used to control the start and stop of the pressure relief and re-pressure detection system;

[0027] The software is used to set the experimental parameters of the pressure test and the operation of the detection system; the software includes an alarm system, which is triggered when the air pressure value in the pressure chamber exceeds the set value.

[0028] When conducting a pressure equalization or pressure resistance test, connect the power supply, insert the plug into the socket, open the sealing cover of the pressurized test device; place the test sample and lock the sealing cover; connect the air pump and check the sealing; turn on the computer control system, control the software, open the air pump input air pipe valve, press the specified rate requirement until the pressure reaches the specified value in the specification, maintain the test time specified in the specification, open the air pump output air pipe valve, press the specified rate requirement until the pressure reaches the specified value in the specification, and repeat the operation. After completing the specified number of test cycles, open the sealing cover of the pressure autoclave and take out the sample. During the above-mentioned experimental process, the pressure relief and re-pressure detection system of the present invention can detect the progress of the experiment in real time.

[0029] In the present invention, the alarm system preferably includes an overpressure protection system and an extreme overpressure protection system.

[0030] like Figure 1 As shown, the control core of the system of the present invention is a Siemens PLC, which works in coordination with a pressure sensor, a boost regulating valve (Y1, Y2) and a pressure relief valve (Y3, Y4).

[0031] The pressure sensor accurately collects the system pressure value in real time and quickly feeds this data back to the PLC. The PLC stores a pre-set pressure value, and judges the system status by comparing the set value and the sensor acquisition value. When the pressure is lower than the set value, the PLC starts the closed-loop PID adjustment mechanism. According to the deviation between the two, the control signal is output after the PID algorithm calculation, so that the boost control valves Y1 and Y2 are opened according to the calculated appropriate opening to increase the system pressure. When the pressure is higher than the set value, the PLC controls the pressure relief valves Y3 and Y4 to open to reduce the pressure. This PID-based closed-loop adjustment can accurately and quickly adjust the valve opening, effectively respond to pressure fluctuations, ensure that the pressure of the positive pressure system is always stable within the set range, ensure the safe, efficient and stable operation of the system, and meet the relevant process requirements of the positive pressure environment.

[0032] In the present invention, when the air pressure in the pressure chamber reaches a first specified value, the overpressure protection system is triggered. (prohibit Booster valves Y1 and Y2 open) , the user checks the pressurized test device based on the alarm signal; when the air pressure value in the pressure chamber reaches the second specified value, the extreme overpressure protection system is triggered (Pressure boost valves Y1 and Y2 are prohibited from opening, and pressure relief valves Y3, Y4 opens to release pressure) , the alarm signal triggers the control system to automatically shut down the experiment.

[0033] In the present invention, the first specified value and the second specified value are preferably values ​​set by the user according to actual experimental conditions.

[0034] In the present invention, the parameters that can be set by the software preferably include the experimental target pressure value, the air pressure increase rate, the pressure holding time and the air pressure release rate.

[0035] In the present invention, a flow meter is preferably provided in the air pipe for calculating the gas input into the pressure chamber by the air compression pump.

[0036] In the present invention, the safety pressure relief valve is used to relieve the pressure of the pressure chamber after the experiment is completed.

[0037] In the present invention, the sealing cover is used to seal the pressure chamber to ensure that there is no pressure release during the experiment.

[0038] In the present invention, the precision pressure gauge can detect the pressure value in the pressure chamber in real time and observe the progress of the experiment.

[0039] The present invention also provides the application of the pressure relief and re-pressure detection system described in the above technical solution in pressure equalization and pressure resistance experiments.

[0040] The technical solutions provided by the present invention are described in detail below in conjunction with the embodiments, but they should not be construed as limiting the protection scope of the present invention.

[0041] Example 1

[0042] (1) Connect the power supply, insert the plug into the socket, and open the sealing cover of the pressurized experimental device;

[0043] (2) Place the test sample and lock the sealing cover;

[0044] (3) Connect the air pump and check the tightness of the pressure chamber;

[0045] (4) Open the computer control system and control software;

[0046] (5) Open the air valve of the air pump input air pipe and press at the specified rate until the pressure reaches the specified value in the specification; the test values ​​currently included in the test items include 0.6MPa (absolute pressure), 0.5MPa (absolute pressure), 0.35MPa, etc.

[0047] (6) Maintain the test time specified in the specification;

[0048] (7) Open the air valve of the air pump output air pipe and reduce the pressure to the specified value according to the specified rate;

[0049] (8) Repeat steps 6 to 8 to complete the specified number of test cycles. During the test cycle, if the pressure chamber is depressurized, the alarm system will issue a warning signal;

[0050] (9) Open the sealing cover of the pressure cooker and take out the sample.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pressure relief and re-pressure detection system, characterized in that: include: Pressurized experimental equipment, control systems and software; The pressurized experimental device comprises an air pipe, an air pump, a pressure chamber, an air compression pump, a sealing cover, a safety pressure relief valve and a precision pressure gauge; The control system is used to control the start and stop of the pressure relief and re-pressure detection system; The software is used to set the experimental parameters of the pressure test and the operation of the detection system; the software includes an alarm system, which is triggered when the air pressure value in the pressure chamber exceeds the set value.

2. The pressure relief and re-pressure detection system according to claim 1, characterized in that: The alarm system includes an overpressure protection system and an extreme overpressure protection system.

3. The pressure relief and re-pressure detection system according to claim 1, characterized in that: When the air pressure in the pressure chamber reaches a first specified value, the overpressure protection system is triggered, and the user checks the pressurized experimental device based on the alarm signal; when the air pressure value in the pressure chamber reaches a second specified value, the extreme overpressure protection system is triggered, and the alarm signal triggers the control system to automatically shut down the experiment.

4. The pressure relief and re-pressure detection system according to claim 1, characterized in that: The first specified value and the second specified value are values ​​set by the user according to actual experimental conditions.

5. The pressure relief and re-pressure detection system according to claim 1, characterized in that: The parameters that can be set by the software include experimental target pressure value, air pressure increase rate, pressure holding time and air pressure release rate.

6. The pressure relief and re-pressure detection system according to claim 1, characterized in that: The air pipe is provided with a flow meter for calculating the gas input into the pressure cabin by the air compression pump.

7. The pressure relief and re-pressure detection system according to claim 1, characterized in that: The safety pressure relief valve is used to relieve the pressure of the pressure chamber after the experiment is completed.

8. The pressure relief and re-pressure detection system according to claim 1, characterized in that: The sealing cover is used to seal the pressure chamber to ensure that there is no pressure release during the experiment.

9. The pressure relief and re-pressure detection system according to claim 1, characterized in that: The precision pressure gauge can detect the pressure value in the pressure chamber in real time and observe the progress of the experiment.

10. Application of the pressure relief and re-pressure detection system according to any one of claims 1 to 9 in pressure equalization and pressure resistance experiments.

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