CN112629847B - O-shaped ring sealing resistance experiment platform and sealing resistance test method - Google Patents
O-shaped ring sealing resistance experiment platform and sealing resistance test method Download PDFInfo
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- CN112629847B CN112629847B CN202110010737.1A CN202110010737A CN112629847B CN 112629847 B CN112629847 B CN 112629847B CN 202110010737 A CN202110010737 A CN 202110010737A CN 112629847 B CN112629847 B CN 112629847B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/005—Sealing rings
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Abstract
The invention discloses an O-shaped ring sealing resistance experiment platform and a sealing resistance test method, which relate to the technical field of experiment platforms and solve the technical problem of sealing resistance measurement when an existing O-shaped sealing ring is designed; the invention has the advantages that the pneumatic pushing fit shaft of the high-pressure air device is extruded with the sealing ring, so that the value of the sealing resistance is calculated.
Description
Technical Field
The invention relates to the technical field of experimental platforms, in particular to the technical field of an O-shaped ring sealing resistance experimental platform, which is used for measuring the sealing resistance of a sealing ring on the platform and calculating the sealing resistance under the condition of the surface precision compression amount of the sealing ring, thereby providing a practically referenced sealing resistance for design and research and development.
Background
The O-shaped ring has the advantages of simple structure, convenient assembly and disassembly, multiple material varieties, low cost, small dynamic friction resistance, standardized size and grooves, strong interchangeability, and is often used for static sealing or dynamic sealing of various mechanical equipment to prevent leakage and invasion of liquid or gas media with certain temperature and pressure inside and outside the equipment. At present, various types of O-ring sealing elements are widely applied to machine tools, ships, automobiles, aerospace equipment, chemical machinery, engineering machinery, mining machinery, petroleum machinery and various instruments and meters, in particular to hydraulic and pneumatic transmission systems and mechanical seals. With the development of production equipment technology, new requirements are put on the application parameters and quality of the O-shaped ring. On one hand, the high-parameter equipment is put into use, and an O-shaped ring with high performance and long period running is required to be used as sealing guarantee; on the other hand, failure or damage of the O-shaped ring often causes leakage of the device, which can not normally work, causes material loss, energy waste and environmental pollution, even fires and explosions, endangers personal safety, and most typically causes leakage of the U.S. challenger number space shuttle due to sealing failure of one O-shaped ring at the joint of the left rocket booster, so that the space shuttle explodes soon after being lifted off, 7 astronauts are all in distress, and the biggest tragedy in space history is caused.
The O-shaped ring seal is always the most commonly used seal mode in the industrial field, and the seal mode is simple in principle, convenient to use and low in cost, and is widely applicable to various fields in industrial production. However, in the design and research, for the problem of sealing resistance when the dynamic seal of the O-shaped ring is designed, one practical and effective reference or solution is not available, even in a standard mechanical design manual, the compression amount of the O-shaped ring is only suggested according to specific sealing conditions and characteristics, the different compression amounts of the O-shaped ring make the sealing resistance in the dynamic seal quite different, the sealing resistance is very important for the research and development design, but no practical and feasible method is available, the important sealing characteristic is that the sealing resistance quite differs along with the tiny changes of the compression amount, the surface roughness and the like, and therefore, no practical method for measuring the specific sealing resistance is available in the design and research and development.
Disclosure of Invention
The invention aims at: the invention provides an O-shaped ring sealing resistance experiment platform and a sealing resistance test method, which aim to solve the problem of measuring sealing resistance of the existing O-shaped ring sealing design.
The invention adopts the following technical scheme for realizing the purposes:
the utility model provides an O type circle sealing resistance experiment platform, includes platform base, fixed triangle chuck, movable triangle chuck, fixed triangle chuck and movable triangle chuck connect in the top of platform base, the cooperation pipe is held to the clamp between fixed triangle chuck and the movable triangle chuck, the cooperation is intraductal to be equipped with the cooperation axle, the centre gripping has the sealing washer between cooperation axle and the cooperation axle, and the one end of cooperation axle is closely there is highly-compressed air device, highly-compressed air device has the air inlet, the terminal surface sealed lid that is used for sealed cooperation pipe is equipped with in the movable triangle chuck, cooperation axle, sealing washer and highly-compressed air device are close to movable triangle chuck, the air inlet sets up in the geometric centre bore of terminal surface sealed lid.
Further, the base is connected between the platform base and the fixed triangular chuck and the movable triangular chuck, the upper end face of the platform base is provided with a sliding rail, the sliding rail is fixed at the upper end of the platform base through a screw, and the sliding rail is in surface contact with the base connected with the movable triangular chuck.
Further stated, the lower end of the base connected with the movable triangular chuck is connected with a locking handle through a pin shaft.
Further stated, one end of the locking grip is in frictional contact with a surface of the slide rail.
Further stated, the surface of the contact surface between the base and the sliding rail and the movable triangular chuck is smooth.
Further, the end face sealing cover is close to the end face of the high-pressure air device, a sealing groove is formed in the end face of the end face sealing cover, any one of an O-shaped sealing ring and a V-shaped sealing ring is arranged in the sealing groove, and one end, close to the end face sealing cover, of the matching pipe abuts against the O-shaped sealing ring or the V-shaped sealing ring.
The beneficial effects of the invention are as follows:
1. according to the invention, a matching pipe is clamped between the fixed triangular chuck and the movable triangular chuck, a matching shaft is arranged in the matching pipe, a sealing ring is clamped between the matching shaft and the matching shaft, one end of the matching shaft is abutted against a high-pressure air device, the high-pressure air device is provided with an air inlet, an end face sealing cover for sealing the matching pipe is arranged in the movable triangular chuck, the matching shaft, the sealing ring and the high-pressure air device are close to the movable triangular chuck, the air inlet is arranged in a geometric center hole of the end face sealing cover, the sealing resistance of the matching shaft and the sealing ring is just balanced by utilizing the pneumatic thrust of the high-pressure air device, the value of the sealing resistance is calculated by measuring the pressure value required by the pushing shaft to overcome the sealing resistance of the sealing ring, and the pneumatic thrust value is calculated by measuring the pressure value required by the pushing shaft.
2. According to the invention, the base is connected between the platform base and the fixed triangular chuck and the movable triangular chuck, the upper end surface of the platform base is provided with the sliding rail, the sliding rail is fixed at the upper end of the platform base through the screw, the sliding rail is in surface contact with the base connected with the movable triangular chuck, and the movable triangular chuck slides on the sliding rail to form a sealing cavity between the matching shaft and the high-pressure air device, so that the locking and sealing of the matching shaft and the sealing ring are realized.
3. The lower end of the base connected with the movable triangular chuck is connected with the locking handle through the pin shaft, one end of the locking handle is in friction contact with the surface of the sliding rail, and the locking of the matching shaft and the sealing ring is realized through the friction effect between the locking handle and the sliding rail.
4. The surface, which is connected with the base and is contacted with the base, between the sliding rail and the movable triangular chuck is smooth, so that the matched shaft, the sealing ring, the high-pressure air device and the end face sealing cover can be ensured to be positioned on the same axis, the sealing resistance value of the sealing ring can be accurately measured, and the measurement error is avoided.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
reference numerals: the device comprises a 1-fixed triangular chuck, a 2-matched pipe, a 3-matched shaft, a 4-sealing ring, a 5-movable triangular chuck, a 6-end face sealing cover, a 7-base, an 8-locking handle, a 9-air inlet, a 10-sealing groove, an 11-high-pressure air device, a 12-sliding rail and a 13-platform base.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention.
Example 1
As shown in fig. 1, this embodiment provides an O-ring seal resistance experiment platform, including fixed triangle chuck 1, cooperation pipe 2, cooperation axle 3, sealing washer 4, movable triangle chuck 5, end face seal lid 6, base 7, locking handle 8, air inlet 9, seal groove 10, high-pressure air device 11, slide rail 12 and platform base 13, fixed triangle chuck 1 and movable triangle chuck 5 connect in the top of platform base 13, the centre gripping has cooperation pipe 2 between fixed triangle chuck 1 and the movable triangle chuck 5, cooperation axle 3 is equipped with to cooperation pipe 2 inside, cooperation axle 3 and centre gripping have sealing washer 4 therebetween, the one end of cooperation axle 3 is closely equipped with high-pressure air device 11, high-pressure air device 11 has air inlet 9, the interior end face seal lid 6 that is used for sealing cooperation pipe 2 of movable triangle chuck 5 of interior, cooperation axle 3, sealing washer 4 and high-pressure air device 11 are close to movable triangle chuck 5, air inlet 9 sets up in the geometric center hole of end face seal lid 6.
The end face sealing cover 6 is close to the end face of the high-pressure air device 11 and is provided with a sealing groove 10, any one of an O-shaped sealing ring or a V-shaped sealing ring is arranged in the sealing groove 10, and one end of the matching pipe 2 close to the end face sealing cover 6 is abutted against the O-shaped sealing ring or the V-shaped sealing ring.
The base 7 is connected between the platform base 13 and the fixed triangular chuck 1 and the movable triangular chuck 5, a slide rail 12 is arranged on the upper end face of the platform base 13, the slide rail 12 is fixed at the upper end of the platform base 13 through screws, and the slide rail 12 is in surface contact with the base 7 connected with the movable triangular chuck 5.
The lower end of the base 7 connected with the movable triangular chuck 5 is connected with a locking handle 8 through a pin shaft, one end of the locking handle 8 is in friction contact with the surface of the sliding rail 12, and the surface, in contact with the base 7, of the sliding rail 12 is smooth, and the surface, in contact with the base 7, of the sliding rail is connected with the movable triangular chuck 5.
Example 2
Working principle: the fixed triangular chuck 1 cannot translate, the fixed triangular chuck 1 clamps the matching pipe 2, and the matching pipe 2 clamps one end of the matching shaft 3; the matching pipe 2, the matching shaft 3 and the sealing ring 4 (O-shaped sealing ring) are of a matching structure of sealing resistance to be measured, wherein the matching shaft 3 is a solid shaft; the movable triangular chuck 5 can translate along the sliding rail 8 and is locked by the locking handle 8, and the two triangular chucks are fixed above the platform base 13 through the base 7; the end face sealing cover 6 is provided with an end face sealing groove 10, the installation sealing ring can realize end face sealing with the matching pipe 2, and a sealing cavity is formed by the matching pipe 2, the matching shaft 3, the sealing ring 4 and the end face sealing cover 6; the high-pressure air device 11 is internally dedicated with high-pressure air, the high-pressure air is blown into the high-pressure air device through the air inlet 9 to enable the high-pressure air device 11 to extrude the matching shaft 3, the matching shaft 3 extrudes the sealing ring 4, the pressure value required by the sealing resistance of the O-shaped sealing ring is overcome by pushing the matching shaft 3, and accordingly the pneumatic thrust value is calculated, and the thrust value is the reference value of the sealing resistance of the sealing ring.
Example 3
The specific implementation steps are as follows:
1) The matching pipe 2, the matching shaft 3, the sealing ring 4 and the end face sealing cover 6 are arranged between the fixed triangular chuck 1 and the movable triangular chuck 5 through end face sealing, and are fixed and clamped;
2) Pushing the movable triangular chuck 5 to enable the end face sealing cover 6 to press the matched pipe 2, and then locking the locking handle 8, wherein the end face sealing is good;
3) Slowly filling high-pressure air into the high-pressure air device 11 until the matching shaft 3 starts to slowly move, and determining the pressure value when the matching shaft 3 is pushed to just move only if the pressure of the high-pressure air is slowly lifted;
4) According to the pressure value and parameters such as the diameter of the matching shaft 3, calculating the pneumatic thrust exerted on the matching shaft 3 under the pressure value;
5) The pneumatic thrust can be used as a sealing resistance value under the experimental matching condition.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (4)
1. The utility model provides an O type circle sealing resistance experiment platform, includes platform base (13), fixed triangle chuck (1), movable triangle chuck (5), fixed triangle chuck (1) and movable triangle chuck (5) connect in the top of platform base (13), it holds cooperation pipe (2), its characterized in that between fixed triangle chuck (1) and the movable triangle chuck (5): the novel high-pressure triangular chuck is characterized in that a matching shaft (3) is arranged in the matching pipe (2), a sealing ring (4) is clamped between the matching shaft (3) and the matching shaft, one end of the matching shaft (3) is abutted against a high-pressure air device (11), the high-pressure air device (11) is provided with an air inlet (9), an end face sealing cover (6) for sealing the matching pipe (2) is arranged in the movable triangular chuck (5), the matching shaft (3), the sealing ring (4) and the high-pressure air device (11) are close to the movable triangular chuck (5), and the air inlet (9) is arranged in a geometric center hole of the end face sealing cover (6); the lower end of a base (7) connected with the movable triangular chuck (5) is connected with a locking handle (8) through a pin shaft; a sealing groove (10) is formed in the end face, close to the high-pressure air device (11), of the end face sealing cover (6), any one of an O-shaped sealing ring or a V-shaped sealing ring is arranged in the sealing groove (10), and one end, close to the end face sealing cover (6), of the matching pipe (2) is abutted against the O-shaped sealing ring or the V-shaped sealing ring;
the fixed triangular chuck (1) cannot translate, the fixed triangular chuck (1) clamps the matching pipe (2), and the matching pipe (2) clamps one end of the matching shaft (3); the matching pipe (2), the matching shaft (3) and the sealing ring (4) are of a matching structure of sealing resistance to be measured, wherein the matching shaft (3) is a solid shaft; the movable triangular chuck (5) can translate along the sliding rail (12) and is locked by the locking handle (8), and the two triangular chucks are fixed above the platform base (13) through the base (7); the end face sealing cover (6) is provided with an end face sealing groove (10), the installation sealing ring can realize end face sealing with the matching pipe (2), and a sealing cavity is formed by the matching pipe (2), the matching shaft (3), the sealing ring (4) and the end face sealing cover (6); high-pressure air is filled in the high-pressure air device (11), high-pressure air is blown in through the air inlet (9) to enable the high-pressure air device (11) to extrude the matching shaft (3), the matching shaft (3) extrudes the sealing ring (4) again, and the magnitude of the pressure value required by overcoming the sealing resistance of the sealing ring (4) by pushing the matching shaft (3) is calculated, so that the magnitude of the pneumatic thrust value is calculated, and the thrust value is the reference value of the sealing resistance of the sealing ring;
the test method comprises the following steps:
step 1: a matching pipe (2), a matching shaft (3), a sealing ring (4) and an end face sealing cover (6) are arranged;
pushing the movable triangular chuck (5) to enable the end face sealing cover (6) to press the matched pipe (2), and then manually shaking the locking handle (8) to enable one end of the locking handle (8) to be in friction locking with the sliding rail (12), wherein the end face sealing is good;
step 3, filling high-pressure air into the high-pressure air device (11) slowly until the matching shaft (3) starts to move slowly until the matching shaft (3) extrudes the sealing ring (4) to deform;
step 4, extruding the matching shaft (3) according to a pressure value generated by deformation of the sealing ring (4) to change the diameter of the matching shaft (3), balancing the reaction force of the sealing ring (4) on the matching shaft (3) with the pneumatic thrust of the high-pressure air device (11) extruding the matching shaft (3), and calculating the size of the pneumatic thrust;
and 5, taking the value of the pneumatic thrust as a sealing resistance value of the sealing ring (4) tested by the experiment.
2. An O-ring seal resistance test platform as defined in claim 1, wherein: the novel movable triangular chuck is characterized in that a base (7) is connected between the platform base (13) and the fixed triangular chuck (1) and the movable triangular chuck (5), a slide rail (12) is arranged on the upper end face of the platform base (13), the slide rail (12) is fixed at the upper end of the platform base (13) through screws, and the slide rail (12) is in surface contact with the base (7) connected with the movable triangular chuck (5).
3. An O-ring seal resistance test platform as defined in claim 1, wherein: one end of the locking handle (8) is in friction contact with the surface of the sliding rail (12).
4. An O-ring seal resistance test platform as defined in claim 2, wherein: a base (7) is connected between the sliding rail (12) and the movable triangular chuck (5), and the contact surface between the sliding rail (12) and the base (7) is a smooth surface.
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| CN202110010737.1A CN112629847B (en) | 2021-01-06 | 2021-01-06 | O-shaped ring sealing resistance experiment platform and sealing resistance test method |
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| CN202110010737.1A CN112629847B (en) | 2021-01-06 | 2021-01-06 | O-shaped ring sealing resistance experiment platform and sealing resistance test method |
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| CN112629847A CN112629847A (en) | 2021-04-09 |
| CN112629847B true CN112629847B (en) | 2023-09-29 |
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| CN114184330A (en) * | 2021-12-21 | 2022-03-15 | 芜湖荣基密封系统有限公司 | Sealing detection equipment for sealing gasket rubber ring |
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| CN112629847A (en) | 2021-04-09 |
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