A rubber sealing gasket corrosion resistance detection device and detection method

Abstract

The application belongs to the technical field of detection devices, and specifically discloses a rubber sealing gasket corrosion resistance detection device and a detection method, which comprises a salt spray test box, the upper side of the salt spray test box is provided with a box door, a tripod is fixedly arranged in the upper side detection cavity of the salt spray test box, a detection tank is fixedly arranged on the inner side of the tripod, three groups of tank doors are arranged on the front side of the detection tank, one group of lock buckles is fixedly arranged on the outer side of the salt spray test box and is connected with the three groups of tank doors, switching assemblies are arranged on the upper and lower sides of the detection tank, a pre-tightening assembly is arranged on the inner side of the detection tank, the switching assemblies comprise two groups of connecting pipes which are fixedly arranged on the upper and lower sides of the detection tank, and the upper end of one group of the connecting pipes on the upper side is fixedly provided with a first motor. The whole is used in cooperation, the corrosion resistance of the rubber ring in the actual working state is simulated, and the test results are different in static and dynamic states, so that the test results are more real and reliable.

Description

Technical Field

[0001] This invention belongs to the field of testing device technology, and specifically discloses a testing device and method for testing the corrosion resistance of rubber sealing gaskets. Background Technology

[0002] Rubber gaskets, as key dynamic / static sealing components, are widely used in chemical, energy, and other fields. Their corrosion resistance directly determines the safety and reliability of equipment operation. Currently, existing corrosion resistance testing devices mainly employ static immersion methods or salt spray test chambers, completely immersing the gaskets in corrosive media or exposing them to a corrosive gas atmosphere. Their corrosion resistance is evaluated by periodically removing samples and observing changes in their mass, volume, and surface condition. However, these existing technologies have significant limitations: firstly, they cannot simulate the actual stress state of gaskets during actual use, i.e., they cannot perform corrosive gas exposure testing under axial compression conditions generated by bolt preload, ignoring the crucial impact of the stress-corrosion synergy on sealing performance degradation; secondly, most existing devices use a "full surface exposure" testing method, meaning the inner ring, outer ring, and end face of the gasket are all in contact with the corrosive media. This testing method is too simplistic and fails to distinguish the reality that the media only contacts specific surfaces (such as the inner diameter surface of a flange gasket) in actual operating conditions, leading to significant deviations between the test results and actual engineering conditions. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a device and method for testing the corrosion resistance of rubber gaskets.

[0004] To achieve the above objectives, the present invention provides a device for testing the corrosion resistance of rubber gaskets, comprising a salt spray test chamber. A door is installed on the upper side of the salt spray test chamber. A tripod is fixedly installed in the upper testing chamber of the salt spray test chamber. A testing tank is fixedly installed inside the tripod. Three sets of tank doors are installed on the front side of the testing tank. Each of the three sets of tank doors is fixedly connected to a set of latches on the outside of the salt spray test chamber. Switching components are provided on the upper and lower sides of the testing tank. A pre-tightening component is provided inside the testing tank. The switching components include two sets of latches fixedly installed on the upper and lower sides of the testing tank. The connecting pipes consist of two sets of pipes. The upper end of the upper set of the two sets of connecting pipes is fixedly equipped with a first motor. A threaded rod is fixedly equipped at the lower end of the first motor's rotating shaft. Three sets of washer hooks are fixedly equipped on the threaded rod. Plugs are threadedly connected to both the upper and lower sides of the threaded rod. Retaining rings are fixedly equipped on both sets of plugs. Vent sleeves are fixedly equipped at one corresponding end of each of the two sets of connecting pipes. Several switching ports are fixedly equipped on each of the two sets of vent sleeves. An air inlet pipe is fixedly equipped on one side of the upper set of the two sets of connecting pipes, and an air outlet pipe is fixedly equipped on one side of the lower set of the two sets of connecting pipes.

[0005] In the above technical solution, preferably, the pre-tightening assembly includes four sets of ring seats fixedly disposed inside the detection tank. The lower ends of the upper three sets of the four sets of ring seats are all fixedly disposed with bellows, and the upper ends of the lower three sets of the four sets of ring seats are disposed with undulating seats. Rubber rings are placed on the upper ends of the three sets of undulating seats. Pressure rings are disposed on the upper sides of the three sets of rubber rings. Two sets of connecting sleeves are fixedly disposed on the outer sides of the three sets of pressure rings. Movable rods are disposed on the inner sides of the two sets of connecting sleeves. One set of movable rods has three spiral sections on its outer side. A second motor is fixedly disposed at the position of the set of movable rods with spiral sections at the lower end of the detection tank.

[0006] In the above technical solution, preferably, a third motor is fixedly installed at the lower end of the detection tank near the rear side, a transmission rod is fixedly installed at the upper end of the rotating shaft of the third motor, and push rollers are fixedly installed on the outer side of the transmission rod corresponding to the positions of the three sets of wave seats. The lower three sets of the four sets of ring seats have ring grooves on their inner sides, and a ring is fixedly installed at the lower end of the three sets of wave seats corresponding to the positions of the ring grooves. Several sets of ball bearings are movably installed on the inner side of the ring, and corrugated spring sheets are fitted between the ring and the inner walls on both sides of the ring groove.

[0007] In the above technical solution, preferably, the threaded rod and the two sets of plugs are spirally connected in opposite positions, the three sets of washer hooks correspond to the positions of the three tank doors respectively, the plugs are blocked at the position of the vent sleeve, the retaining ring fits against the inner wall of the vent sleeve, and the retaining ring is slidably disposed with the vent sleeve.

[0008] In the above technical solution, preferably, the two sets of ventilation sleeves are fixedly connected to the uppermost and lowermost ring seats respectively, the air inlet pipe and the air outlet pipe are respectively connected to the interior of the two sets of connecting pipes, and the air inlet pipe and the air outlet pipe are respectively fixedly connected to the gas inlet and outlet ends of the salt spray test chamber.

[0009] In the above technical solution, preferably, the three sets of corrugated pipes correspond to the positions of the three sets of tank doors, the lower ends of the three sets of corrugated pipes are fixedly connected to the three sets of pressure rings, and the rubber ring is clamped between the corrugated seat and the pressure ring.

[0010] In the above technical solution, preferably, one set of the two sets of movable rods with a spiral part is movably connected to the detection tank, and the other set of movable rods is fixedly connected to the detection tank; one set of the two sets of connecting sleeves is threadedly connected to the spiral part; the other set of the two sets of connecting sleeves is movably connected to the movable rod; and the rotating shaft of the second motor is fixedly connected to the corresponding set of spiral parts.

[0011] In the above technical solution, preferably, the transmission rod and the detection tank are movably connected, the three sets of push rollers are eccentrically arranged on the transmission rod, the push rollers are attached to the outside of the wave seat, the ball bearings are partially protruding and rolling in the annular groove, and the two sets of corrugated spring sheets are respectively clamped on the inner and outer sides of the ring.

[0012] A testing method for a rubber gasket corrosion resistance testing device is also provided, comprising the following steps: S1: According to the detection requirements, start the first motor to drive the two sets of plugs to move away from or close to each other, so that the two sets of retaining rings block or open the switching port, open the passage between the vent sleeve and the bellows or switch the cavity between the detection tank and the bellows, so as to realize the gas flow of two different paths. S2: Start the second motor to drive the three sets of connecting sleeves and the connected pressure rings of the spiral connection to move downward along the movable rod, so that the pressure rings pre-tighten and press the rubber ring on the wave seat, thereby simulating the corrosion resistance test of the rubber ring under actual working conditions; S3: Start the third motor to drive the transmission rod and three sets of push wheels to rotate. The eccentrically set push wheels push the wave seat to move back and forth slightly along the annular groove, realizing the simulation detection of the rubber ring under the rubbing shear stress and gas infiltration accelerated failure behavior under the micro-motion state.

[0013] Compared with the prior art, the present invention has the following beneficial effects: According to the testing requirements, the first motor is started to drive the threaded rod to rotate. The rotating threaded rod drives the two sets of plugs connected to it to move away from each other, causing the two sets of retaining rings to move up and block the switching port, opening the passage between the vent sleeve and the bellows. At this time, the gas entering through the air inlet pipe will flow along the inside of the bellows. When driven in the reverse direction, the two sets of plugs move closer to each other and block the two sets of vent sleeves, while opening the switching port. The gas entering through the switching port flows into the cavity between the test tank and the bellows, realizing the flow of gas through two different paths, thereby simulating the contact state between the inner and outer end faces of the test wave seat and the corrosive medium. In addition, conventional suspension testing can also be achieved through the washer hook.

[0014] Place the rubber ring on the upper end of the wave seat and start the second motor to drive the connected movable rod to rotate. Since the three sets of connecting sleeves are screwed into the three spiral sections on the movable rod, the three sets of connecting sleeves and the connected pressure ring can be driven to move downward along the movable rod, so that the pressure ring pre-tightens and presses the rubber ring onto the wave seat, thereby simulating the corrosion resistance test of the rubber ring under actual working conditions and obtaining test results under different stress conditions.

[0015] By starting the third motor to drive the transmission rod and the three sets of push wheels to rotate, the three sets of eccentrically set push wheels push the three sets of wave seats, causing the wave seats to drive the balls to move back and forth slightly along the ring groove. Combined with the elastic support and reset effect of the corrugated spring sheet, the simulation test of the rubber ring under the rubbing shear stress and gas infiltration accelerated failure behavior under the micro-motion state is realized. The test results are more realistic and reliable than the static test. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a rubber sealing gasket corrosion resistance testing device proposed in this invention; Figure 2 This is a schematic diagram of the inner structure of a salt spray test chamber for a rubber sealing gasket corrosion resistance testing device proposed in this invention; Figure 3 This is a schematic diagram of the switching component and pre-tightening component of the rubber sealing gasket corrosion resistance testing device proposed in this invention; Figure 4 This is a schematic diagram of the inner structure of the testing tank of a rubber sealing gasket corrosion resistance testing device proposed in this invention; Figure 5 This is a partially enlarged structural diagram of the switching component and pre-tightening component of the rubber sealing gasket corrosion resistance testing device proposed in this invention; Figure 6 This is a partial structural diagram of the switching component of a rubber sealing gasket corrosion resistance testing device proposed in this invention; Figure 7 This is a schematic diagram of the pre-tightening component structure of a rubber sealing gasket corrosion resistance testing device proposed in this invention; Figure 8 This is a partial structural diagram of the pre-tightening component of a rubber sealing gasket corrosion resistance testing device proposed in this invention; Figure 9 This is a schematic diagram of the inner structure of the ring seat of a rubber sealing gasket corrosion resistance testing device proposed in this invention.

[0017] In the diagram: 1. Salt spray test chamber; 2. Chamber door; 3. Tripod; 4. Test tank; 5. Tank door; 6. Lock; 7. Switching assembly; 71. Connecting pipe; 72. First motor; 73. Threaded rod; 74. Washer hook; 75. Plug; 76. Retaining ring; 77. Vent sleeve; 78. Switching port; 79. Inlet pipe; 710. Outlet pipe; 8. Pre-tightening assembly; 81. Ring seat; 82. Bellows; 83. Wave seat; 84. Rubber ring; 85. Pressure ring; 86. Connecting sleeve; 87. Movable rod; 88. Spiral part; 89. Second motor; 810. Third motor; 811. Transmission rod; 812. Push wheel; 813. Ring groove; 814. Circular ring; 815. Ball bearing; 816. Bellows spring. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0020] like Figures 1 to 9 The device shown is a corrosion resistance testing device for rubber sealing gaskets, comprising a salt spray test chamber 1, a door 2 installed on the upper side of the salt spray test chamber 1, a tripod 3 fixedly installed in the upper testing chamber of the salt spray test chamber 1, a testing tank 4 fixedly installed inside the tripod 3, three sets of tank doors 5 installed on the front side of the testing tank 4, and a set of latches 6 fixedly installed on the outer side of the three sets of tank doors 5 and the outer side of the salt spray test chamber 1, respectively, a switching assembly 7 installed on the upper and lower sides of the testing tank 4, and a pre-tightening assembly 8 installed inside the testing tank 4. The switching assembly 7 includes two sets of connecting pipes 71 fixedly installed on the upper and lower sides of the testing tank 4, and the two sets of connecting pipes 71 contain... A first motor 72 is fixedly installed at the upper end of the upper group. A threaded rod 73 is fixedly installed at the lower end of the rotating shaft of the first motor 72. Three sets of washer hooks 74 are fixedly installed on the threaded rod 73. Plugs 75 are threadedly connected to both the upper and lower sides of the threaded rod 73. Retaining rings 76 are fixedly installed on both sets of plugs 75. Vent sleeves 77 are fixedly installed at one end of each of the two sets of connecting pipes 71. Several switching ports 78 are fixedly installed on each of the two sets of vent sleeves 77. An air inlet pipe 79 is fixedly installed on one side of the upper group of the two sets of connecting pipes 71. An air outlet pipe 710 is fixedly installed on one side of the lower group of the two sets of connecting pipes 71.

[0021] The threaded rod 73 and the two sets of plugs 75 are connected in opposite positions. The three sets of washer hooks 74 correspond to the positions of the three sets of tank doors 5. The plugs 75 are blocked at the position of the vent sleeve 77. The retaining ring 76 fits against the inner wall of the vent sleeve 77. The retaining ring 76 and the vent sleeve 77 are slidably arranged. The two sets of vent sleeves 77 are fixedly connected to the uppermost and lowermost ring seats 81, respectively. The air inlet pipe 79 and the air outlet pipe 710 are respectively connected to the interior of the two sets of connecting pipes 71. The air inlet pipe 79 and the air outlet pipe 710 are respectively fixedly connected to the gas inlet and outlet ends of the salt spray test chamber 1.

[0022] According to the testing requirements, the first motor 72 is started to drive the threaded rod 73 to rotate. The rotating threaded rod 73 drives the two sets of plugs 75 connected to it to move away from each other, causing the two sets of retaining rings 76 to move up and block the switching port 78, opening the passage between the vent sleeve 77 and the bellows 82. At this time, the gas entering through the air inlet pipe 79 will flow along the inside of the bellows 82. When driven in the reverse direction, the two sets of plugs 75 move closer to each other and block the two sets of vent sleeves 77. At the same time, the switching port 78 is opened, and the gas entering flows into the cavity between the test tank 4 and the bellows 82 through the switching port 78, realizing the flow of gas through two different paths, thereby simulating the contact state between the inner and outer end faces of the test wave seat 83 and the corrosive medium. In addition, conventional suspension testing can also be realized through the washer hook 74.

[0023] The pre-tightening assembly 8 includes four sets of ring seats 81 fixedly installed inside the detection tank 4. The lower ends of the upper three sets of ring seats 81 are all fixedly provided with bellows 82. The upper ends of the lower three sets of ring seats 81 are provided with undulating seats 83. Rubber rings 84 are placed on the upper ends of the three sets of undulating seats 83. Pressure rings 85 are provided on the upper sides of the three sets of rubber rings 84. Two sets of connecting sleeves 86 are fixedly installed on the outer sides of the three sets of pressure rings 85. Movable rods 87 are provided inside the two sets of connecting sleeves 86. One set of movable rods 87 has three spiral sections 88 on the outer side. A second motor 89 is fixedly installed at the position of the movable rod 87 with spiral sections 88 at the lower end of the detection tank 4.

[0024] The three sets of bellows 82 correspond to the positions of the three sets of tank doors 5 respectively. The lower ends of the three sets of bellows 82 are fixedly connected to the three sets of pressure rings 85 respectively. The rubber ring 84 is clamped between the wave seat 83 and the pressure ring 85. One set of the two sets of movable rods 87 with a spiral part 88 is movably connected to the detection tank 4, and the other set of movable rods 87 is fixedly connected to the detection tank 4. One set of the two sets of connecting sleeves 86 is threadedly connected to the position of the spiral part 88, and the other set of the two sets of connecting sleeves 86 is movably connected to the movable rod 87. The rotating shaft of the second motor 89 is fixedly connected to the corresponding set of spiral parts 88.

[0025] The rubber ring 84 is placed on the upper end of the wave seat 83, and the second motor 89 is started to drive the connected movable rod 87 to rotate. Since the three sets of connecting sleeves 86 are screwed into the three sections of spiral parts 88 on the movable rod 87, the three sets of connecting sleeves 86 and the connected pressure ring 85 can be driven to move downward along the movable rod 87, so that the pressure ring 85 pre-tightens the rubber ring 84 on the wave seat 83, thereby simulating the corrosion resistance test of the rubber ring 84 under actual working conditions and obtaining test results under different stress conditions.

[0026] A third motor 810 is fixedly installed at the lower end of the testing tank 4 near the rear side. A transmission rod 811 is fixedly installed at the upper end of the rotating shaft of the third motor 810. Push rollers 812 are fixedly installed on the outer side of the transmission rod 811 corresponding to the positions of the three sets of wave seats 83. The inner side of the lower three sets of ring seats 81 has ring grooves 813. A ring 814 is fixedly installed at the lower end of the three sets of wave seats 83 corresponding to the positions of the ring grooves 813. Several sets of ball bearings 815 are movably arranged on the inner side of the ring 814. Corrugated spring pieces 816 are fitted between the inner walls of the ring 814 and the inner walls of the ring grooves 813.

[0027] The transmission rod 811 is movably connected to the detection tank 4. Three sets of push rollers 812 are eccentrically set on the transmission rod 811. The push rollers 812 are attached to the outside of the wave seat 83. The ball 815 protrudes partially and rolls in the annular groove 813. Two sets of corrugated springs 816 are respectively clamped on the inner and outer sides of the ring 814.

[0028] By starting the third motor 810 to drive the transmission rod 811 and the three sets of push rollers 812 to rotate, the three sets of eccentrically set push rollers 812 push the three sets of wave seats 83, causing the wave seats 83 to drive the balls 815 to move back and forth slightly along the annular groove 813. Combined with the elastic support and reset effect of the corrugated spring sheet 816, the simulation test of the rubber ring 84 under the working condition of rubbing shear stress and gas infiltration accelerated failure under micro-motion state is realized. The test results are more realistic and reliable than the static test.

[0029] A testing method for a rubber gasket corrosion resistance testing device is also provided, comprising the following steps: S1: According to the detection requirements, start the first motor 72 to drive the two sets of plugs 75 to move away from or close to each other, so that the two sets of retaining rings 76 block or open the switching port 78, open the passage between the ventilation sleeve 77 and the bellows 82 or switch the cavity between the detection tank 4 and the bellows 82, so as to realize the gas flow of two different paths. S2: Start the second motor 89 to drive the three sets of connecting sleeves 86 and the connected pressure ring 85 of the spiral connection to move downward along the movable rod 87, so that the pressure ring 85 pre-tightens the rubber ring 84 on the wave seat 83, thereby simulating the corrosion resistance test of the rubber ring 84 under actual working conditions. S3: Start the third motor 810 to drive the transmission rod 811 and the three sets of push wheels 812 to rotate. The eccentrically set push wheel 812 pushes the wave seat 83 to move back and forth slightly along the annular groove 813, so as to realize the simulation detection of the rubber ring 84 under the working condition of rubbing shear stress and gas infiltration accelerated failure under micro-motion state.

[0030] Working principle: In use, the first motor 72 is started according to the detection requirements to drive the threaded rod 73 to rotate. The rotating threaded rod 73 drives the two sets of plugs 75 connected to it to move away from each other, causing the two sets of retaining rings 76 to move up and block the switching port 78, opening the passage between the vent sleeve 77 and the bellows 82. At this time, the gas entering through the air inlet pipe 79 will flow along the inside of the bellows 82. When driven in the reverse direction, the two sets of plugs 75 move closer to each other and block the two sets of vent sleeves 77. At the same time, the switching port 78 is opened, and the gas entering flows into the cavity between the detection tank 4 and the bellows 82 through the switching port 78, realizing the flow of gas through two different paths, thereby simulating the contact state between the inner and outer end faces of the detection wave seat 83 and the corrosive medium. In addition, conventional suspension detection can also be realized through the washer hook 74. Secondly, the rubber ring 84 is placed on the upper end of the wave seat 83, and the second motor 89 is started to drive the connected movable rod 87 to rotate. Since the three sets of connecting sleeves 86 are screwed into the three sections of spiral parts 88 on the movable rod 87, the three sets of connecting sleeves 86 and the connected pressure ring 85 can be driven to move downward along the movable rod 87, so that the pressure ring 85 pre-tightens and presses the rubber ring 84 onto the wave seat 83, thereby simulating the corrosion resistance test of the rubber ring 84 under actual working conditions and obtaining test results under different stress conditions. In addition, by starting the third motor 810 to drive the transmission rod 811 and the three sets of push wheels 812 to rotate, the three sets of eccentrically set push wheels 812 push the three sets of wave seats 83, so that the wave seat 83 drives the ball 815 to move back and forth slightly along the annular groove 813. With the elastic support and reset effect of the corrugated spring sheet 816, the simulation test of the rubber ring 84 under the working conditions of rubbing shear stress and gas infiltration accelerated failure under micro-motion state is realized. The test results are more realistic and reliable than the static test.

[0031] In this invention, all components that come into contact with the detection gas are made of corrosion-resistant materials or corrosion-resistant coatings. The electrical equipment of the salt spray test chamber 1, the first motor 72, the second motor 89, and the third motor 810 are used in conjunction with relevant sensors and components. The connection and usage methods are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use, so it will not be explained in detail.

[0032] In this invention, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances.

[0033] In the description of this specification, the use of terms such as "one embodiment," "some embodiments," or "specific embodiment" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A device for testing the corrosion resistance of rubber sealing gaskets, comprising a salt spray test chamber (1), characterized in that: The salt spray test chamber (1) is equipped with a door (2) on its upper side. A tripod (3) is fixedly installed in the upper detection chamber of the salt spray test chamber (1). A test tank (4) is fixedly installed inside the tripod (3). Three sets of tank doors (5) are installed on the front side of the test tank (4). A set of latches (6) is fixedly installed on the outer side of the three sets of tank doors (5) and the outside of the salt spray test chamber (1). Switching components (7) are installed on the upper and lower sides of the test tank (4). A pre-tightening component (8) is installed on the inner side of the test tank (4). The switching component (7) includes two sets of connecting pipes (71) fixedly installed on the upper and lower sides of the test tank (4). The upper end of the upper set of the two sets of connecting pipes (71) is fixedly equipped with a first... A motor (72) is provided with a threaded rod (73) fixedly installed at the lower end of the rotating shaft of the first motor (72). Three sets of washer hooks (74) are fixedly installed on the threaded rod (73). Plugs (75) are threadedly connected to the upper and lower sides of the threaded rod (73). Retaining rings (76) are fixedly installed on both sets of plugs (75). Vent sleeves (77) are fixedly installed at one end of the upper and lower corresponding ends of the two sets of connecting pipes (71). Several switching ports (78) are fixedly installed on both sets of vent sleeves (77). An air inlet pipe (79) is fixedly installed on one side of the upper set of the two sets of connecting pipes (71). An air outlet pipe (710) is fixedly installed on one side of the lower set of the two sets of connecting pipes (71).

2. The device for testing the corrosion resistance of rubber sealing gaskets according to claim 1, characterized in that: The pre-tightening assembly (8) includes four sets of ring seats (81) fixedly installed inside the test tank (4). The lower ends of the upper three sets of the four sets of ring seats (81) are all fixedly provided with bellows (82). The upper ends of the lower three sets of the four sets of ring seats (81) are provided with undulating seats (83). The upper ends of the three sets of undulating seats (83) are provided with rubber rings (84). The upper sides of the three sets of rubber rings (84) are all provided with pressure rings (85). The outer sides of the three sets of pressure rings (85) are all fixedly provided with two sets of connecting sleeves (86). The inner sides of the two sets of connecting sleeves (86) are all provided with movable rods (87). The outer sides of one set of movable rods (87) are provided with three spiral sections (88). The lower end of the test tank (4) is fixedly provided with a second motor (89) at the position of the set of movable rods (87) corresponding to the spiral section (88).

3. The device for testing the corrosion resistance of rubber sealing gaskets according to claim 2, characterized in that: A third motor (810) is fixedly installed at the lower end of the detection tank (4) near the rear side. A transmission rod (811) is fixedly installed at the upper end of the rotating shaft of the third motor (810). Push wheels (812) are fixedly installed on the outer side of the transmission rod (811) corresponding to the positions of the three sets of wave seats (83). The inner side of the lower three sets of the four sets of ring seats (81) is provided with ring grooves (813). A ring (814) is fixedly installed at the lower end of the three sets of wave seats (83) corresponding to the positions of the ring grooves (813). Several sets of ball bearings (815) are movably arranged on the inner side of the ring (814). Corrugated spring pieces (816) are fitted between the inner walls of the ring (814) and the two sides of the ring groove (813).

4. The device for testing the corrosion resistance of rubber sealing gaskets according to claim 2, characterized in that: The threaded rod (73) and the two sets of plugs (75) are connected in opposite positions. The three sets of washer hooks (74) correspond to the positions of the three sets of tank doors (5). The plugs (75) are blocked at the position of the vent sleeve (77). The retaining ring (76) fits against the inner wall of the vent sleeve (77). The retaining ring (76) and the vent sleeve (77) are slidably arranged.

5. The device for testing the corrosion resistance of rubber sealing gaskets according to claim 2, characterized in that: The two sets of ventilation sleeves (77) are fixedly connected to the uppermost and lowermost ring seats (81) respectively. The air inlet pipe (79) and air outlet pipe (710) are respectively connected to the interior of the two sets of connecting pipes (71). The air inlet pipe (79) and air outlet pipe (710) are respectively fixedly connected to the gas inlet and outlet ends of the salt spray test chamber (1).

6. The device for testing the corrosion resistance of rubber sealing gaskets according to claim 2, characterized in that: The three sets of corrugated pipes (82) correspond to the positions of the three sets of tank doors (5), and the lower ends of the three sets of corrugated pipes (82) are fixedly connected to the three sets of pressure rings (85). The rubber ring (84) is clamped between the corrugated seat (83) and the pressure ring (85).

7. The rubber sealing gasket corrosion resistance testing device according to claim 3, characterized in that: One set of the two sets of movable rods (87) with a spiral part (88) is movably connected to the detection tank (4), and the other set of movable rods (87) is fixedly connected to the detection tank (4). One set of the two sets of connecting sleeves (86) is threadedly connected to the spiral part (88), and the other set of the two sets of connecting sleeves (86) is movably connected to the movable rod (87). The rotating shaft of the second motor (89) is fixedly connected to the corresponding set of spiral parts (88).

8. The rubber sealing gasket corrosion resistance testing device according to claim 3, characterized in that: The transmission rod (811) is movably connected to the detection tank (4). The three sets of push rollers (812) are eccentrically set on the transmission rod (811). The push rollers (812) are attached to the outside of the wave seat (83). The ball (815) protrudes partially and rolls in the ring groove (813). The two sets of corrugated springs (816) are respectively clamped on the inner and outer sides of the ring (814).

9. A testing method for a gasket corrosion resistance testing device, used to operate the rubber gasket corrosion resistance testing device according to any one of claims 1-8, characterized in that, Includes the following steps: S1: Start the first motor (72) according to the detection requirements to drive the two sets of plugs (75) to move away from or close to each other, so that the two sets of retaining rings (76) block or open the switching port (78), open the passage between the ventilation sleeve (77) and the bellows (82) or switch the cavity between the detection tank (4) and the bellows (82) to realize the gas flow of two different paths; S2: Start the second motor (89) to drive the three sets of connecting sleeves (86) and the connected pressure ring (85) of the spiral connection to move downward along the movable rod (87), so that the pressure ring (85) pre-tightens the rubber ring (84) on the wave seat (83), thereby simulating the corrosion resistance test of the rubber ring (84) under actual working conditions; S3: Start the third motor (810) to drive the transmission rod (811) and the three sets of push wheels (812) to rotate. The eccentrically set push wheel (812) pushes the wave seat (83) to move back and forth slightly along the ring groove (813) to realize the simulation detection of the rubber ring (84) under the working condition of rubbing shear stress and gas infiltration accelerated failure under micro-motion state.

Images