Multifunctional airtight door detection system and method thereof

Abstract

The invention belongs to the technical field of air-tight doors, and particularly relates to a multifunctional air-tight door detection system and a method thereof, and the system comprises an air-tight door test body, an air-tight door switch test system, an air-tight door air tightness test system, an air-tight rubber strip inflation test system and a main control test bench. According to the system and the method, full-process and all-directional testing can be realized, various data curves are formed through intelligent control, real-time visual display and real-time recording of test data, the system is more visual and accurate, remote monitoring and data tracing are supported, and the detection precision and the detection efficiency are greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of airtight doors, and particularly relates to a multifunctional airtight door detection system and method thereof. Background Art

[0002] The airtight door is a key device in the laboratory and an important part of the laboratory enclosure structure. It is used for personnel to enter and exit, while ensuring the isolation between the clean area and the polluted area, and ensuring the airtightness of the laboratory to prevent the leakage of pollutants. The airtightness of the airtight door greatly affects the safety of the entire core area of the laboratory;

[0003] At present, the construction of high-level laboratories is still in its infancy, and safety protection equipment such as airtight doors is also in the stage of research and development and iteration. Many airtight doors are generally put into actual use environments after meeting the standard airtightness;

[0004] At present, the testing of airtight doors only conducts some independent functional tests, without comprehensive testing, and the test items are relatively simple. It is difficult to achieve full-process test management and intelligent and visual management. Therefore, the quality of airtight doors is difficult to guarantee. At the same time, these testing works rely too much on manual operation, with low efficiency and subjective errors. In addition, these tests lack an integrated testing system. Different testing items require switching different testing instruments and equipment, and the data recording and analysis methods are backward, and real-time visual monitoring cannot be achieved. Summary of the Invention

[0005] The present invention provides a multifunctional airtight door detection system and method thereof, which can solve the problems pointed out in the background art.

[0006] A multifunctional airtight door detection system and method thereof includes an airtight door test body, an airtight door switch test system, an airtight door airtightness test system, an airtight rubber strip inflation test system, and a main control test bench;

[0007] The airtight door test body includes a test door frame tooling, an airtight door body, and an inflation rubber strip;

[0008] The airtight door switch test system includes a driving device for driving the airtight door body to reciprocate and open and close. A tensile and compressive force sensor is provided on the driving device to feedback the tensile and compressive force during the test, and an angle sensor is provided on the hinge of the airtight door body to feedback the opening and closing angle of the airtight door body during the test. The tensile and compressive force sensor and the angle sensor are both electrically connected to the main control test bench;

[0009] The airtight door airtightness test system includes an airtightness test pipeline and a first pressure sensor, a first solenoid valve, and a first pressure reducing valve provided on the airtightness test pipeline. The end of the airtightness test pipeline is connected to the airtight door test body;

[0010] The airtight rubber strip inflation test system includes an inflation rubber strip inflation pipeline, and a second pressure sensor, a second solenoid valve, and a second pressure reducing valve provided on the inflation rubber strip inflation pipeline. The end of the inflation rubber strip inflation pipeline is connected to the inflation rubber strip;

[0011] The airtightness test pipeline and the inflation rubber strip inflation pipeline are both connected to the main air path, and the main air path is connected to a compressed air gas source;

[0012] The main control test bench is used to control each test system, receive signals, process them, and display them.

[0013] Preferably, the driving device includes a stable bracket, a cylinder, and a door body connecting member. A door body connecting member is provided on the movable end of the cylinder to be detachably connected to the airtight door body, and the other end is hinged to the stable bracket. A pulling and pressing force sensor is provided on the piston rod of the cylinder, and the cylinder is connected to the main air path.

[0014] Preferably, the door body connecting member is a door handle connecting member, and the door handle connecting member is a detachable pipe clamp.

[0015] Preferably, the stable bracket includes a base and a vertical frame. A linear slide table is provided on the vertical frame, and the other end of the cylinder is hinged to the slide seat of the linear slide table.

[0016] Preferably, a plurality of casters are provided under the base.

[0017] Preferably, the airtightness test pipeline is connected to the negative pressure pipeline in a tee form, and the negative pressure pipeline is connected to a vacuum pump.

[0018] A detection method includes the following processes:

[0019] 1. The airtight door body switch test system includes the following processes:

[0020] 1. Connect the driving device to the airtight door body;

[0021] 2. Set the number of opening and closing times of the airtight door body through the main control test bench, and perform test control of this switch test system through the main control test bench;

[0022] 3. The main control test bench collects in real time the data of the opening and closing angles fed back by the angle sensor and the pulling and pressing forces fed back by the pulling and pressing force sensor, and displays the operation in real time through the display screen;

[0023] 4. The main control test bench respectively draws curves of time vs. opening and closing angles and time vs. pulling and pressing forces;

[0024] 5. The main control test bench monitors and displays the test times and test curves in real time; automatically stops the test when exceeding the set range;

[0025] II. The airtight door body strength test includes the following processes:

[0026] 1. Connect the airtightness test pipeline to the airtight door body;

[0027] 2. Continuously inflate the closed space formed by the airtight door body and the test door frame tooling through the first solenoid valve. The second pressure sensor is used to monitor the pressure and give feedback. After reaching the set pressure, maintain this set pressure within the set time. The main control test bench records the time-pressure relationship and plots the time-pressure relationship curve;

[0028] 3. After the test, manually judge the deformation amount of the airtight door body during the test;

[0029] III. The inflation and deflation test of the inflatable rubber strip includes the following processes:

[0030] 1. Connect the inflatable rubber strip pipeline to the inflatable rubber strip;

[0031] 2. Set the inflation and deflation times and inflation pressure through the main control test bench to test the reliability of the inflatable rubber strip through high-intensity fatigue tests and to check whether the inflatable rubber strip causes permanent structural deformation to the door body after frequent inflation and deflation;

[0032] IV. The airtightness test of the airtight door body includes the following processes:

[0033] 1. Connect the airtightness test pipeline to the airtight door body;

[0034] 2. Continuously inflate the closed space formed by the airtight door body and the test door frame tooling through the first solenoid valve. The second pressure sensor is used to monitor the pressure and give feedback. After reaching the set pressure, stop inflating, record the pressure drop within the set time, and plot the time-pressure relationship curve;

[0035] 3. Calculate the pressure difference before and after and judge whether it is qualified;

[0036] V. The full-process airtightness test of the airtight door includes the following processes:

[0037] Test process:

[0038] 1. Close the airtight door body;

[0039] 2. Inflate the inflatable rubber strip, and then deflate the inflatable rubber strip. The airtight door body is driven by the driving device to open the airtight door body to the maximum angle, and then driven by the driving device to close it, which is one cycle.

[0040] 3. Set the number of times of the above cycle through the main control test bench. After reaching the set number of times, test the airtightness of the airtight door and check whether the test data is qualified. After passing the test, set the number of times of the above cycle again through the main control test bench. After reaching the set number of times, test the airtightness of the airtight door and check whether the test data is qualified. Repeat this cycle to test the durability of the airtight door throughout the process.

[0041] Beneficial effects: The present invention provides a multifunctional airtight door detection system and method, which can perform full-process and all-round testing, and through intelligent control, carry out intelligent and visual display, can record test data in real time, and form various data curves, which is more intuitive and accurate. Description of the Drawings

[0042] Figure 1 It is a test logic schematic diagram of the present invention.

[0043] Figure 2 It is a structural schematic diagram of the main control test bench and the airtight door switch test system of the present invention.

[0044] Figure 3 It is a structural schematic diagram of the airtight door switch test system of the present invention.

[0045] Description of the reference numerals in the drawings:

[0046] Reference numerals in the figure: airtight door test body 1; test door frame tooling 11; airtight door body 12; inflatable rubber strip 13; hinge 14; tension and compression sensor 21; angle sensor 22; stable support 23; base 231; vertical frame 232; cylinder 24; door body connecting piece 25; linear slide 26; slide seat 261; Fuma wheel 27; airtightness test pipeline 31; first pressure sensor 32; first solenoid valve 33; first pressure reducing valve 34; negative pressure pipeline 35; vacuum pump 36; inflatable rubber strip inflation pipeline 41; second pressure sensor 42; second solenoid valve 43; second pressure reducing valve 44; main control test bench 5; main air circuit 61; main pressure reducing valve 62; three-way valve 63. Detailed Description of the Invention

[0047] The following combines the drawings to describe a specific embodiment of the present invention in detail, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0048] Embodiment 1:

[0049] As Figures 1-3 shown, a multifunctional airtight door detection system and method include an airtight door test body 1, an airtight door switch test system, an airtight door airtightness test system, an airtight rubber strip inflation test system, and a main control test bench 5;

[0050] The airtight door test body 1 includes a test door frame tooling 11, an airtight door body 12, and an inflatable rubber strip 13. The periphery of the airtight door body 12 is sealed with the test door frame tooling 11 through the inflatable rubber strip 13. The airtight door body 12 is hingedly connected to the test door frame tooling 11 through a hinge 14, enabling it to simulate opening and closing.

[0051] The airtight door opening and closing test system includes a driving device for driving the airtight door body 12 to reciprocate between opening and closing. A tension and compression sensor 21 is provided on the driving device to feedback the tension and compression during the test process. An angle sensor 22 is provided on the hinge 14 of the airtight door body 12 to feedback the opening and closing angle of the airtight door body 12 during the test process. The hinge 14 is a hinge. Both the tension and compression sensor 21 and the angle sensor 22 are electrically connected to the main control test bench 5.

[0052] The airtight door airtightness test system includes an airtightness test pipeline 31, and a first pressure sensor 32, a first solenoid valve 33, and a first pressure reducing valve 34 provided on the airtightness test pipeline 31. The end of the airtightness test pipeline 31 is connected to the airtight door test body 1.

[0053] The inflatable rubber strip inflation test system includes an inflatable rubber strip inflation pipeline 41, and a second pressure sensor 42, a second solenoid valve 43, and a second pressure reducing valve 44 provided on the inflatable rubber strip inflation pipeline 41. The end of the inflatable rubber strip inflation pipeline 41 is connected to the inflatable rubber strip 13.

[0054] Both the airtightness test pipeline 31 and the inflatable rubber strip inflation pipeline 41 are connected to the main air pipeline 61. The main air pipeline 61 is connected to a compressed air source. A main pressure reducing valve 62 and a three-way valve 63 are provided on the main air pipeline 61. The three-way valve 63 is used for opening and closing the main air pipeline 61 and for venting.

[0055] The main control test bench 5 centrally controls and manages each test system, receives signals, collects and analyzes data from each test system, processes the data and draws a curve graph, and generates a detailed test report.

[0056] The main control test bench 5 can have a remote operation function, enabling operators to control the equipment or system from a remote location. The main control test bench 5 has a data visualization function, enabling operators to more intuitively understand the operation of the system. The main control test bench 5 has an automated operation and control function; through a preset automated operation mode, it automatically executes a series of control commands, such as starting and stopping the test, adjusting parameters, etc. The main control test bench 5 can ensure that only authorized personnel can access and operate the equipment or system through security measures for permission management. The main control test bench 5 can have a fault sound and light alarm function.

[0057] Specifically, the driving device includes a stable bracket 23, a cylinder 24, and a door body connecting member 25. A door body connecting member 25 is provided on the movable end of the cylinder 24 for detachably connecting with the airtight door body 12, and the other end thereof is hinged to the stable bracket 23. A tensile and compressive force sensor 21 is provided on the piston rod of the cylinder 24. The cylinder 24 is connected to the main air path 61. The door body connecting member 25 is a door handle connecting member, which can be a detachable pipe clamp or a hoop structure to match inflatable doors of different specifications and models.

[0058] In some embodiments, the stable bracket 23 includes a base 231 and a vertical bracket 232. A linear slide table 26 is provided on the vertical bracket 232. The other end of the cylinder 24 is hinged to the slide block 261 of the linear slide table 26. The height of the cylinder 24 can be adjusted through the linear slide table 26 to match door handles of different heights.

[0059] In some embodiments, a plurality of casters 27 are provided below the base 231 for easy movement. The casters 27 have high stability when locked and will not move easily.

[0060] In some embodiments, the airtightness test pipeline 31 is connected to the negative pressure pipeline 35 in a tee form. The negative pressure pipeline 35 is connected to a vacuum pump 36. Sometimes, negative pressure tests are also required. Therefore, on the basis of the existing pipeline, the negative pressure pipeline 35 and the vacuum pump 36 are added, and the tee connection point is before the first pressure sensor 32.

[0061] A detection method includes the following processes:

[0062] I. The airtight door body 12 switch test system mainly conducts more than ten thousand switch tests on the airtight door body 12 to detect the durability of components such as the hinges and bushings of the airtight door, inspect the wear and deformation of the hinges during their life cycle, analyze based on the test data, and optimize the structural design of the airtight door.

[0063] It includes the following processes:

[0064] 1. Connect the driving device to the airtight door body 12;

[0065] 2. Set the number of switch times of the airtight door body 12 through the main control test bench 5 and conduct test control of this switch test system through the main control test bench 5;

[0066] 3. The main control test bench 5 collects in real time the data of the switch angle feedback by the angle sensor 22 and the tensile and compressive force feedback by the tensile and compressive force sensor 21, and displays the operation in real time through the display screen;

[0067] 4. The main control test bench 5 respectively draws curves of time vs. switch angle and time vs. tensile and compressive force;

[0068] 5. The main control test bench 5 monitors and displays the test times and test curves in real time; automatically stops the test when exceeding the set range;

[0069] II. The strength test of the airtight door body 12 mainly applies a certain air pressure to the airtight door body 12, including positive pressure and negative pressure, and maintains it for a certain period of time, and then detects the deformation amount of the airtight door body 12 to determine the pressure-bearing capacity of the airtight door body 12. The process includes the following:

[0070] The strength test of the airtight door body 12 includes the following process:

[0071] 1. Connect the airtightness test pipeline 31 to the airtight door body 12;

[0072] 2. Continuously inflate the closed space formed by the airtight door body 12 and the test door frame tooling 11 through the first solenoid valve 33. The second pressure sensor 42 is used to monitor the pressure and give feedback. After reaching the set pressure, maintain this set pressure within the set time. The main control test bench 5 records the relationship between time and pressure and draws the time-pressure relationship curve;

[0073] 3. After the test is completed, manually judge the deformation amount of the airtight door body 12 during the test;

[0074] III. The inflation and deflation test of the airtight rubber strip 13 mainly conducts frequent inflation and deflation tests on the airtight rubber strip 13. After reaching the set number of inflation and deflation times, conduct airtightness detection on the airtight rubber strip 13 under working conditions and visually inspect the resilience of the airtight rubber strip 13. If it is qualified, set the number of inflation and deflation times again to conduct the next cycle of tests, so as to judge the performance change of the airtight rubber strip 13 under frequent inflation and deflation. According to the test data, analyze and judge the service life and replacement frequency of the airtight rubber strip 13. The process includes the following:

[0075] 1. Connect the inflation rubber strip inflation pipeline 41 to the inflation rubber strip 13;

[0076] 2. Set the number of inflation and deflation times and inflation pressure through the main control test bench 5 to test the reliability of the inflation rubber strip 13 through high-intensity fatigue tests and to check whether the inflation rubber strip 13 causes permanent structural deformation to the door body after frequent inflation and deflation;

[0077] IV. The airtightness test of the airtight door 12 mainly conducts positive and negative pressure airtightness tests on the airtight door 12 according to the standard to judge whether its airtightness meets the standard design requirements. The process includes the following:

[0078] 1. Connect the airtightness test pipeline 31 to the airtight door body 12;

[0079] 2. Continuously inflate the closed space formed by the airtight door body 12 and the test door frame tooling 11 through the first solenoid valve 33. The second pressure sensor 42 is used to monitor the pressure and give feedback. Stop inflating after reaching the set pressure, record the pressure drop within the set time, and draw the curve of the relationship between time and pressure;

[0080] 3. Calculate the pressure difference before and after, and determine whether it is qualified;

[0081] V. The whole-process airtightness test of the airtight door is mainly to simulate the opening and closing of the door by a certain number of times through the driving device, and then conduct the airtightness test on the airtight door to judge the airtightness and durability of the door. It includes the following processes:

[0082] 1. Close the airtight door body 12;

[0083] 2. Inflate the inflatable rubber strip 13, and then deflate the inflatable rubber strip 13. The airtight door body 12 drives the airtight door body 12 to open to the maximum angle through the driving device, and then drives it to close through the driving device, which is one cycle.

[0084] 3. Set the number of the above cycles through the main control test bench 5. After reaching the set number of times, test the airtightness of the airtight door and whether the test data is qualified. After passing, set the number of the above cycles again through the main control test bench 5. After reaching the set number of times, test the airtightness of the airtight door and whether the test data is qualified. Repeat this cycle to test the durability of the airtight door in the whole process.

[0085] The above discloses only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A multifunctional airtight door detection system, characterized in that: It comprises an airtight door test body (1), an airtight door switch test system, an airtight door airtightness test system, an airtight rubber strip inflation test system and a main control test bench (5); The airtight door test body (1) comprises a test door frame tool (11), an airtight door body (12) and an inflatable rubber strip (13); The airtight door switch test system comprises a driving device for driving the airtight door body (12) to reciprocate, the driving device is provided with a tension pressure sensor (21) for feeding back the tension pressure during the test, the hinge (14) of the airtight door body (12) is provided with an angle sensor (22) for feeding back the switch angle of the airtight door body (12) during the test, the tension pressure sensor (21) and the angle sensor (22) are both electrically connected to the main control test bench (5); The airtight door airtightness test system comprises an airtightness test pipeline (31), and a first pressure sensor (32), a first solenoid valve (33) and a first pressure reducing valve (34) arranged on the airtightness test pipeline (31); the end of the airtightness test pipeline (31) is connected to the airtight door test body (1); The airtight rubber strip inflation test system comprises an inflatable rubber strip inflation pipeline (41), and a second pressure sensor (42), a second solenoid valve (43) and a second pressure reducing valve (44) arranged on the inflatable rubber strip inflation pipeline (41), and the end of the inflatable rubber strip inflation pipeline (41) is connected to the inflatable rubber strip (13); The air tightness test pipeline (31) and the inflatable rubber strip inflating pipeline (41) are both connected to a main air circuit (61), and the main air circuit (61) is connected to a compressed air source; The main control test bench (5) is used to control various test systems and to receive signals, perform processing and display.

2. A multifunctional airtight door detection system according to claim 1, characterized in that: The driving device comprises a stabilizing bracket (23), a cylinder (24) and a door body connecting piece (25); a door body connecting piece (25) is provided on a movable end of the cylinder (24) so ​​as to be detachably connected to the airtight door body (12); the other end of the cylinder (24) is hingedly connected to the stabilizing bracket (23); a tension pressure sensor (21) is provided on a piston rod of the cylinder (24); and the cylinder (24) is connected to the main air path (61).

3. A multifunctional airtight door detection system according to claim 2, characterized in that: The door body connecting piece (25) is a door handle connecting piece, and the door handle connecting piece is a detachable pipe clamp.

4. A multifunctional airtight door detection system according to claim 2, characterized in that: The stabilizing bracket (23) comprises a base (231) and a stand (232), a linear slide (26) is provided on the stand (232), and the other end of the cylinder (24) is hingedly connected to a slide seat (261) of the linear slide (26).

5. A multifunctional airtight door detection system according to claim 4, characterized in that: A plurality of Forma wheels (27) are provided below the base (231).

6. A multifunctional airtight door detection system according to any one of claims 1 to 5, characterized in that: The air tightness test pipeline (31) is connected to the negative pressure pipeline (35) in a three-way manner, and the negative pressure pipeline (35) is connected to a vacuum pump (36).

7. A detection method, characterized in that: Using a detection system as described in any one of claims 1 to 6: The following processes are included:

1. The airtight door body (12) opening and closing test system includes the following processes: 1). Connect the driving device to the airtight door body (12); 2) Setting the number of times the airtight door (12) is opened and closed by the main control test bench (5), and performing test control of the switch test system by the main control test bench (5); 3). The main control test bench (5) collects the switch angle data fed back by the angle sensor (22) and the pulling pressure data fed back by the pulling pressure sensor (21) in real time, and displays the data in real time on the display screen; 4). The main control test bench (5) draws the relationship curves between time and switch angle and time and tension pressure respectively; 5). Main control test bench (5) monitors and displays the test times and test curves in real time; the test is automatically stopped if it exceeds the set range; 2. The strength test of the airtight door body (12) includes the following process: 1). Connect the airtightness test pipeline (31) to the airtight door body (12); 2) The closed space formed by the airtight door body (12) and the test door frame tooling (11) is continuously inflated through the first solenoid valve (33), and the second pressure sensor (42) is used to monitor the pressure and provide feedback. After reaching the set pressure, the set pressure is maintained within the set time. The main control test bench (5) records the relationship between time and pressure and draws a time and pressure relationship curve; 3). After the test is completed, manually determine the deformation of the airtight door body (12) during the test; 3. The inflation and deflation test of the inflatable rubber strip (13) includes the following process: 1) Connect the inflatable rubber strip inflation pipeline (41) to the inflatable rubber strip (13); 2) Setting the number of inflation and deflation times and the inflation pressure through the main control test bench (5) to test the reliability of the inflation strip (13) through a high-intensity fatigue test and to test whether the inflation strip (13) causes permanent structural deformation to the door body after frequent inflation and deflation; 4. The airtightness test of the airtight door body (12) includes the following process: 1). Connect the airtightness test pipeline (31) to the airtight door body (12); 2) The closed space formed by the airtight door body (12) and the test door frame tooling (11) is continuously inflated through the first solenoid valve (33), and the second pressure sensor (42) is used to monitor the pressure and provide feedback. When the set pressure is reached, the inflation is stopped, the pressure drop within the set time is recorded, and a time-pressure relationship curve is drawn; 3). Calculate the pressure difference before and after, and determine whether it is qualified; 5. The full process of airtightness test of airtight door includes the following processes: Test process: 1). Close the airtight door (12); 2). Inflate the inflatable rubber strip (13), then deflate the inflatable rubber strip (13), and the airtight door body (12) is driven by the driving device to open the door to the maximum angle, and then driven by the driving device to close the door, which is a cycle. 3). The number of cycles is set by the main control test bench (5). After the set number of cycles is reached, the air tightness of the airtight door is tested to see if the test data is qualified. After the test data is qualified, the number of cycles is set again by the main control test bench (5). After the set number of cycles is reached, the air tightness of the airtight door is tested to see if the test data is qualified. This cycle is repeated to test the durability of the airtight door throughout the entire process.

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