Detection device of pressure vacuum alternating testing machine

Abstract

The utility model provides a detection device of a pressure vacuum alternating testing machine, which comprises a main body, and a vacuum pressure testing assembly and a control detection assembly are fixedly connected in the main body. The micro vacuum pump is used for extracting control in the test sealing box and is matched with the pressure sensor and the digital pressure gauge to detect the pressure of equipment in the test sealing box, so that the equipment can be prevented from being damaged; and the accuracy, reliability, programmability and flexibility of the test can be improved, data processing and connection are convenient, and the comprehensiveness of the test can be improved and the stability of signal transmission during the test can be ensured due to multiple forms and applications and high customization.

Description

Technical Field

[0001] This utility model belongs to the technical field of pressure vacuum alternating test machine, specifically a pressure vacuum alternating test machine testing device. Background Technology

[0002] With the continuous development of industrial technology, increasingly higher requirements are being placed on the design, manufacturing, and testing of pressure equipment. Pressure vacuum alternating testing machines (hereinafter referred to as alternating machines), as an important testing device, are widely used for durability and reliability testing of pressure equipment. These machines can simulate pressure fluctuations in actual working environments, accelerating the aging process of pressure equipment by repeatedly applying pressure signals of specific amplitude and frequency, thereby evaluating its performance in long-term use.

[0003] Current pressure vacuum alternating testing machines typically employ piston-type or valve-controlled regulation methods, outputting pressure waveforms in various forms, including sine waves, square waves, and trapezoidal waves. These devices require consideration of multiple technical indicators during design and manufacturing, such as sealing performance, frequency deviation, amplitude deviation, amplitude stability, and alternating reliability. However, existing technologies rarely include testing devices and methods for alternating machine performance. Therefore, this invention provides a testing device for testing pressure vacuum alternating testing machines. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a pressure vacuum alternating test machine testing device.

[0005] This utility model is implemented as follows:

[0006] A testing device for a pressure vacuum alternating test chamber includes: a main body, wherein a vacuum pressure testing component, a partition, and a control and testing component are arranged inside the main body from top to bottom;

[0007] The vacuum pressure testing assembly includes a test sealed box, inside which a support plate is fixedly connected. A miniature vacuum pump, a pressure sensor, and a digital pressure gauge are installed at the bottom of the support plate. An air pipe is fixedly connected to the top of the miniature vacuum pump, and the air pipe extends to the top of the support plate.

[0008] The control and detection assembly includes a support plate, and a power supply, a voltage detection module, a current detection module, a processor, a digital oscilloscope, a signal transmission module, a filtering unit, an anti-interference module, and a capacitor are fixedly connected to the side of the support plate.

[0009] The power supply, the voltage detection module, and the current detection module are all electrically connected;

[0010] The current detection module, the processor, and the digital oscilloscope are all electrically connected;

[0011] The digital oscilloscope, the signal transmission module, and the filtering unit are all electrically connected.

[0012] The filtering unit, the anti-interference module, and the capacitor are all electrically connected.

[0013] Furthermore, the main body includes a loading box, a radiator is fixedly connected to the right side of the loading box, and a box door is provided on the front side of the loading box.

[0014] Furthermore, a control panel is fixedly connected to the top of the loading box, a touch screen is fixedly connected to the top of the control panel, and operation buttons are provided below the touch screen.

[0015] Furthermore, a start button is provided next to the control panel.

[0016] The advantages of this utility model are:

[0017] 1. The present invention provides a testing device for a pressure vacuum alternating test chamber. By using a micro vacuum pump to extract the pressure inside the test chamber and in conjunction with a pressure sensor and a digital pressure gauge, the device can detect the pressure of the equipment inside the test chamber. This not only prevents damage to the equipment but also increases the accuracy of the test. The pressure sensor has high accuracy, a large measurement range, and good frequency response characteristics. The digital pressure gauge is characterized by high accuracy and reliability, programmability and flexibility, convenient data processing and connection, multiple forms and applications, and high customizability.

[0018] 2. By utilizing voltage and current detection modules, current and voltage tests can be performed on the equipment to be tested, increasing the comprehensiveness of the test. At the same time, the filtering unit and anti-interference module can ensure the stability of signal transmission during the test. Attached Figure Description

[0019] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of the system of this utility model.

[0021] Figure 2 This is a schematic diagram of the vacuum pressure testing component in this utility model.

[0022] Figure 3 This is a schematic diagram of the control component structure in this utility model.

[0023] Figure 4 This is a schematic diagram of the control and detection component structure in this utility model.

[0024] Reference numerals: 1. Main body; 101. Loading box; 102. Radiator; 103. Box door; 104. Control panel; 105. Touch screen; 106. Operation buttons; 107. Start button; 2. Vacuum pressure testing assembly; 201. Test sealing box; 202. Support plate; 203. Miniature vacuum pump; 204. Air pipe; 205. Pressure sensor; 206. Digital pressure gauge; 3. Partition; 4. Control and detection assembly; 401. Support plate; 402. Power supply; 403. Voltage detection module; 404. Current detection module; 405. Processor; 406. Digital oscilloscope; 407. Signal transmission module; 408. Filtering unit; 409. Anti-interference module; 410. Capacitor. Detailed Implementation

[0025] The details of this utility model can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of this utility model described herein are for illustrative purposes only and should not be construed as limiting the utility model in any way. Under the teachings of this utility model, those skilled in the art can conceive of any possible modifications based on this utility model, and these should all be considered to fall within the scope of this utility model.

[0026] refer to Figures 1 to 4 As shown, this embodiment provides a testing device for a pressure vacuum alternating test machine, including: a main body 1, and a vacuum pressure testing component 2, a partition 3 and a control and testing component 4 arranged from top to bottom inside the main body 1;

[0027] The vacuum pressure testing assembly 2 includes a test sealed chamber 201. A support plate 202 is fixedly connected inside the test sealed chamber 201. A miniature vacuum pump 203, a pressure sensor 205, and a digital pressure gauge 206 are mounted on the bottom of the support plate 202. A gas pipe 204 is fixedly connected to the top of the miniature vacuum pump 203, extending to the top of the support plate 202. The miniature vacuum pump 203 extracts pressure from inside the test sealed chamber 201, and the pressure sensor 205 and digital pressure gauge 206 are used to detect the pressure of the equipment inside the test sealed chamber 201. This not only prevents damage to the equipment but also increases the accuracy of the test. The pressure sensor 205 has high accuracy, a large measurement range, and good frequency response characteristics. The digital pressure gauge 206 features high accuracy and reliability, programmability and flexibility, convenient data processing and connection, multiple forms and applications, and high customizability.

[0028] The control and detection component 4 includes a support plate 401. A power supply 402, a voltage detection module 403, a current detection module 404, a processor 405, a digital oscilloscope 406, a signal transmission module 407, a filtering unit 408, an anti-interference module 409, and a capacitor 410 are fixedly connected to the side of the support plate 401. The power supply 402, voltage detection module 403, and current detection module 404 are electrically connected; the current detection module 404, processor 405, and digital oscilloscope 406 are electrically connected; the digital oscilloscope 406, signal transmission module 407, and filtering unit 408 are electrically connected; and the filtering unit 408, anti-interference module 409, and capacitor 410 are electrically connected. The voltage detection module 403 and current detection module 404 can be used to test the current and voltage of the equipment to be tested, increasing the comprehensiveness of the test. Meanwhile, the filtering unit 408 and anti-interference module 409 ensure the stability of signal transmission during testing.

[0029] In addition, the main body 1 includes a loading box 101, a heat sink 102 fixedly connected to the right side of the loading box 101, and a door 103 provided on the front side of the loading box 101. A control panel 104 is fixedly connected to the top of the loading box 101, a touch screen 105 is fixedly connected to the top of the control panel 104, and operation buttons 106 are provided on the lower side of the touch screen 105. A start button 107 is provided on the right side of the control panel 104. The function of the heat sink 102 is to absorb this heat and then dissipate it into or outside the chassis to ensure the normal temperature of the computer components. The advantages of the heat sink 102 include strong pressure resistance, convenient installation and maintenance, beautiful appearance, moderate cost, comfortable heat dissipation method, and high thermal efficiency.

[0030] During testing, the following steps must be performed first: S1: Preparation before testing; S2: Appearance and functionality inspection; S3: Deviation test of the pressure gauge readings of the alternating converter; S4: Sealing test; S5: Alternating frequency deviation test; S6: Alternating amplitude deviation test; S7: Stability test of alternating amplitude; S8: Alternating reliability test.

[0031] Specifically, S1: Preparations before testing include: confirming the medium: according to the usage requirements of the alternating current transformer to be tested, ensure that the liquid or gas medium used meets the standards. For liquid media: check whether the water quality is clean and free of impurities such as oil, and inject the medium into the alternating current transformer. For gaseous media: ensure that the pipeline is clean and the connection is secure. Checking the equipment: check whether all interfaces of the alternating current transformer are intact and whether the sealing structure is normal.

[0032] S2: Appearance and functional inspection includes: Visual inspection: Inspect the appearance of the alternator, including whether the nameplate is clear (equipment name, model, instrument number, etc.); Interface inspection: Ensure that all interfaces are intact and free of burrs; Safety function: Confirm whether it has a rapid pressure relief function; Working status inspection: Observe the pressure control of the alternator during operation and check for any phenomena such as jumps, jams, or leaks.

[0033] S3: The deviation test of the pressure gauges of the alternating transformer includes: instrument selection: select the appropriate standard instrument according to the configuration of the alternating transformer; deviation test: perform deviation test on the pressure gauges, digital pressure gauges 206, etc. in accordance with the corresponding verification procedures.

[0034] S4: The sealing test includes: Equipment connection: Install a standard pressure gauge at any output port of the alternator, and seal other interfaces; Pressurize to test point: Pressurize to the specified pressure point and maintain the pressure for 1 minute; Measure pressure drop: Disconnect the pressure source, record the pressure value at the 6th minute, calculate the pressure drop value, and verify whether the requirements are met.

[0035] S5: Alternating frequency deviation test includes: Equipment connection: Connect the pressure sensor 205 or digital pressure gauge 206 to the output port of the alternator, and connect an oscilloscope or data acquisition software; Frequency setting: Set the alternator to run at frequencies of 0.5Hz and 1Hz; Data acquisition: Continuously acquire 100 cycles of alternating signal, obtain the actual alternating frequency through Fourier transform, and check whether its deviation meets the requirements.

[0036] S6: Alternating amplitude deviation test includes: setting up the detection system: similar to the frequency deviation test, connecting the equipment and setting the switch frequency to 60 times / min, adjusting the amplitude: setting the amplitude of the alternator according to the specification requirements, running for 5 minutes, amplitude calculation: selecting waveform data from the 6th to the 10th minute, calculating the average of the upper and lower limits of the amplitude, and comparing it with the set amplitude to verify whether it meets the requirements.

[0037] S7: The stability test of alternating amplitude includes: recording the initial amplitude: after the alternating amplitude deviation test is completed, record the average amplitude of the alternator; isolating the standard: close the valve between the standard and the alternator and continue to run the alternator; monitoring changes: every 10,000 runs, open the isolation valve to monitor the amplitude change and verify whether the amplitude error meets the requirements. Repeat the test until 30,000 alternating cycles are completed.

[0038] S8: Alternating reliability testing includes: recording the number of alternating cycles: after completing 30,000 alternating cycles, record the number of alternating cycles of the alternator within 5 minutes and compare it with the data of the standard; calculating the deviation: calculate the deviation of the number of alternating cycles and verify whether it is within the specified range; checking the sealing performance: after the test, check the sealing performance of each interface of the alternator to confirm whether the whole machine can work normally.

[0039] After completing the above steps, simply open the loading box 101 using the box door 103, place the device under test on top of the support plate 202, then close the box door 103 to keep the loading box 101 sealed. Then press the start button 107 to start the testing device. Use the touch screen 105 and operation buttons 106 to control the micro vacuum pump 203 and use the air tube 204 to draw air from the inside of the test sealing box 201 to apply vacuum pressure. At this time, the pressure sensor 205 and digital pressure gauge 206 can detect the pressure inside the test sealing box 201 and transmit the data to the processor 405. After processing and analysis by the processor 405, the obtained test data can be displayed on the touch screen 105, thus completing the pressure test of the device under test.

[0040] The pressure vacuum alternating test machine testing device provided by this utility model can not only achieve high-precision testing, but also increase the comprehensiveness of the test and ensure the stability of signal transmission.

[0041] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A testing device for a pressure vacuum alternating testing machine, characterized in that: include: The main body, from top to bottom, includes a vacuum pressure testing assembly, a partition, and a control and detection assembly; The vacuum pressure testing assembly includes a test sealed box, inside which a support plate is fixedly connected. A miniature vacuum pump, a pressure sensor, and a digital pressure gauge are installed at the bottom of the support plate. An air pipe is fixedly connected to the top of the miniature vacuum pump, and the air pipe extends to the top of the support plate. The control and detection assembly includes a support plate, and a power supply, a voltage detection module, a current detection module, a processor, a digital oscilloscope, a signal transmission module, a filtering unit, an anti-interference module, and a capacitor are fixedly connected to the side of the support plate. The power supply, the voltage detection module, and the current detection module are all electrically connected; The current detection module, the processor, and the digital oscilloscope are all electrically connected; The digital oscilloscope, the signal transmission module, and the filtering unit are all electrically connected. The filtering unit, the anti-interference module, and the capacitor are all electrically connected.

2. The testing device for a pressure vacuum alternating testing machine according to claim 1, characterized in that: The main body includes a loading box, a radiator is fixedly connected to the right side of the loading box, and a box door is provided on the front side of the loading box.

3. The testing device for a pressure vacuum alternating testing machine according to claim 2, characterized in that: A control panel is fixedly connected to the top of the loading box, a touch screen is fixedly connected to the top of the control panel, and operation buttons are provided below the touch screen.

4. The testing device for a pressure vacuum alternating testing machine according to claim 3, characterized in that: A start button is located next to the control panel.

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