Rubber ring sealing performance testing device

Abstract

The utility model relates to the technical field of rubber ring sealing test, in particular to a rubber ring sealing performance testing device. Oil supplied by the oil supply mechanism enters the containing cavity through the liquid inlet, the cavity formed by the rubber ring is filled with the oil, therefore, the rubber ring is clamped through the clamping assembly, the thickness of the cushion block can be adjusted, the acting force applied to the rubber ring can be adjusted according to the arrangement of different cushion blocks, and the service life of the rubber ring is prolonged. Due to the fact that the compression ratio of the rubber ring is changed under different acting forces, the device for testing the sealing performance of the rubber ring can detect sealing leakage conditions under different compression ratios.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber ring sealing test, in particular to a rubber ring sealing performance testing device. Background Art

[0002] Rubber rings have good sealing performance, simple structure and low cost, and are widely used in various mechanical equipment. However, rubber materials are affected by high temperature and vibration during operation, and the rubber molecular chains may break or become overly sticky, causing changes in rubber properties and leading to sealing failure. Therefore, it is necessary to evaluate and predict rubber sealing performance through testing.

[0003] In the prior art, the testing of rubber sealing performance is usually achieved by compressing the rubber ring, but the compression rate of the rubber ring cannot be adjusted as needed, resulting in limitations in the testing.

[0004] Therefore, a rubber ring sealing performance testing device is urgently needed to solve the above technical problems. Utility Model Content

[0005] The utility model aims to provide a rubber ring sealing performance testing device, which can realize the sealing performance testing of the rubber ring under different compression rates and meet different needs.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A rubber ring sealing performance testing device, comprising:

[0008] A sealing component testing mechanism, comprising a clamping assembly, a supporting base and an oil collecting structure, wherein the supporting base is fixedly connected to the clamping assembly to support the clamping assembly, the oil collecting structure is arranged at the bottom of the clamping assembly to receive the leaked oil dripping from the clamping assembly, the clamping assembly comprises a first clamping structure, a second clamping structure and a cushion block with adjustable thickness, the cushion block is arranged between the first clamping structure and the second clamping structure to adjust the distance between the first clamping structure and the second clamping structure, the first clamping structure has a first receiving groove, the second clamping structure has a second receiving groove, after the first clamping structure and the second clamping structure are fixedly connected by fasteners, the first receiving groove and the second receiving groove jointly enclose a receiving chamber capable of receiving a rubber ring, the groove bottom of the first receiving groove and the groove bottom of the second receiving groove are respectively in contact with two opposite side surfaces of the rubber ring, the first clamping structure is fixedly connected to the supporting base, the second clamping structure is provided with a liquid inlet and a liquid outlet, and the second receiving groove is respectively communicated with the liquid inlet and the liquid outlet;

[0009] An oil supply mechanism is respectively connected to the liquid inlet and the liquid outlet to provide oil to the accommodating chamber.

[0010] As a preferred technical solution of the above-mentioned rubber ring sealing performance testing device, the gasket includes a plurality of gaskets with different thicknesses.

[0011] As a preferred technical solution of the above-mentioned rubber ring sealing performance testing device, adjacent gaskets are bonded, or multiple gaskets are fixedly connected by fasteners, and the thickness of the gaskets is the same, or the thickness of each gasket is different.

[0012] As a preferred technical solution of the above-mentioned rubber ring sealing performance testing device, the number of the gasket is one, and the gasket is an arc-shaped structure with a notch, and the notch is arranged toward the oil collecting structure.

[0013] As an optimal technical solution for the above-mentioned rubber ring sealing performance testing device, there are multiple gaskets, and the multiple gaskets are arranged at intervals along the circumference of the rubber ring, and the multiple gaskets are clamped between the first clamping structure and the second clamping structure. An oil leakage gap is formed between the two gaskets with the smallest distance from the oil collecting structure, and the oil leakage gap is arranged directly opposite to the oil collecting structure.

[0014] As a preferred technical solution of the above-mentioned rubber ring sealing performance testing device, the first clamping structure includes a flange, which is fixedly connected to the support base, and the second clamping structure includes a cover plate, which is fixedly connected to the flange by bolts.

[0015] As an optimal technical solution for the above-mentioned rubber ring sealing performance testing device, the support base includes a support seat and a support frame, the support frame is fixedly arranged on the top of the support seat, and the oil collecting structure is fixedly arranged on the top of the support seat, and the oil collecting structure is arranged on one side of the support frame.

[0016] As a preferred technical solution of the above-mentioned rubber ring sealing performance testing device, the oil collecting structure includes an oil collecting cup and a scraper, the oil collecting cup is used to collect leaked oil, and the scraper is used to pick up the oil attached to the outside of the clamping component.

[0017] As a preferred technical solution of the above-mentioned rubber ring sealing performance testing device, the oil supply mechanism includes an oil tank, a hydraulic pump, a heater, a cooler, a pressure sensor and a temperature sensor. The cooler, the oil tank, the heater and the hydraulic pump are connected in sequence. The outlet of the hydraulic pump is connected to the liquid inlet, the inlet of the cooler is connected to the liquid outlet, the temperature sensor is used to detect the temperature of the oil at the outlet of the hydraulic pump, and the pressure sensor is used to detect the pressure at the outlet of the hydraulic pump.

[0018] As a preferred technical solution of the above-mentioned rubber ring sealing performance testing device, the cooler includes an air-cooled cooler, and the heater includes a tubular heater.

[0019] The utility model has at least the following beneficial effects:

[0020] The oil provided by the oil supply mechanism enters the accommodating chamber through the liquid inlet, and the chamber formed by the rubber ring is filled with oil. Therefore, the rubber ring is clamped by the clamping assembly, and the thickness of the gasket is adjustable, so the force applied to the rubber ring can be adjusted according to the setting of different gaskets. Since the rubber ring changes its compression rate under different forces, the rubber ring sealing performance testing device provided by the utility model can detect sealing leakage under different compression rates. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the structure of a rubber ring sealing performance testing device provided in an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of the structure of a seal testing mechanism provided by an embodiment of the utility model;

[0024] Figure 3 A schematic structural diagram of a cushion block provided in an embodiment of the utility model.

[0025] In the figure:

[0026] 1. Sealing component testing mechanism; 11. Support base; 111. Support seat; 112. Support frame; 12. First clamping structure; 121. First containing groove; 13. Second clamping structure; 131. Second containing groove; 14. Cushion block; 15. Oil collecting cup; 2. Oil supply mechanism; 21. Oil tank; 22. Hydraulic pump; 23. Heater; 24. Cooler; 25. Pressure sensor; 26. Temperature sensor; 27. Liquid inlet pipeline; 28. Liquid outlet pipeline; 29. ​​Controller. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] An embodiment of the utility model provides a rubber ring sealing performance testing device, which can change the force acting on the rubber ring to test the sealing leakage rate of the rubber ring under different compression rates.

[0032] Specifically, Figure 1 to Figure 2As shown, the rubber ring sealing performance testing device includes a sealing component testing mechanism 1 and an oil supply mechanism 2. The sealing component testing mechanism 1 includes a clamping assembly, a supporting base 11 and an oil collecting structure. The supporting base 11 is fixedly connected to the clamping assembly to support the clamping assembly. The oil collecting structure is arranged at the bottom of the clamping assembly to receive the leaked oil dripping from the clamping assembly. Specifically, the clamping assembly includes a first clamping structure 12, a second clamping structure 13 and a cushion block 14 with adjustable thickness. The cushion block 14 is arranged between the first clamping structure 12 and the second clamping structure 13 to adjust the distance between the first clamping structure 12 and the second clamping structure 13, that is, the cushion block 14 is used to adjust the gap between the first clamping structure 12 and the second clamping structure 13, and then the force applied to the rubber ring by the first clamping structure 12 and the second clamping structure 13 can be adjusted to change the compression rate of the rubber ring. The first clamping structure 12 has a first receiving groove 121, and the second clamping structure 13 has a second receiving groove 131. After the first clamping structure 12 and the second clamping structure 13 are fixedly connected by fasteners, the first receiving groove 121 and the second receiving groove 131 together form a receiving chamber capable of accommodating a rubber ring. The bottom of the first receiving groove 121 and the bottom of the second receiving groove 131 are in contact with two opposite sides of the rubber ring respectively. Since the oil leakage of the rubber ring is different under different compression rates, the purpose of detection can be achieved through the leakage amount of the rubber ring and the first clamping structure 12 and the second clamping structure 13. The first clamping structure 12 is fixedly connected to the support base 11, and the second clamping structure 13 is provided with a liquid inlet and a liquid outlet. The second receiving groove 131 is respectively connected to the liquid inlet and the liquid outlet, and the oil supply mechanism 2 is respectively connected to the liquid inlet and the liquid outlet.

[0033] The oil provided by the oil supply mechanism 2 enters the accommodating chamber through the liquid inlet, and the chamber formed by the rubber ring is filled with oil, so the rubber ring is clamped by the clamping assembly, and the thickness of the pad 14 is adjustable, so the force applied to the rubber ring can be adjusted according to the setting of different pads 14. Since the rubber ring changes the compression rate under different forces, the rubber ring sealing performance testing device provided in this embodiment can detect sealing leakage under different compression rates.

[0034] It should be noted that the width and depth of the first receiving groove 121 and the second receiving groove 131 are both set according to the size of the rubber ring to be tested.

[0035] In some embodiments, the number of the pad 14 can be one or more. When the number of the pad 14 is more than one, the size and shape of the pad 14 are the same, and the pad 14 includes a plurality of pads of different thicknesses. It is understandable that the pad 14 includes a plurality of pad groups of different thicknesses, each of which has a plurality of pads of the same thickness. In each test, pads of the same thickness are used to adjust the gap between the first clamping structure 12 and the second clamping structure 13. This ensures that the compression force received by the rubber ring is the same at all locations, prevents the rubber ring from having different gaps due to different compression forces at all locations, and thus ensures the accuracy of the test.

[0036] In some embodiments, the number of the pads 14 is one or more, and the pads 14 clamped between the first clamping structure 12 and the second clamping structure 13 have the same thickness. Optionally, a single pad 14 includes a plurality of adjacent gaskets bonded together, and the thickness of the gaskets may be the same or different. Of course, it is also possible that a plurality of gaskets of different thicknesses are fixedly connected by fasteners, or that gaskets of the same thickness are fixedly connected by fasteners.

[0037] It should be noted that when the number of the cushion block 14 is one, Figure 3 As shown, the pad 14 is an arc-shaped structure with a notch, and the notch is arranged toward the oil collecting structure. In this way, the oil leaked from the side of the rubber ring can flow to the oil collecting structure through the notch, so that the oil can flow out, which is convenient for subsequent collection of the leaked oil and can prevent the oil from adhering to the pad 14 and affecting the test results.

[0038] When there are multiple pads 14, the multiple pads 14 are arranged at intervals along the circumference of the rubber ring, and the multiple pads 14 can be evenly arranged circumferentially, so that the rubber ring can be subjected to the same pressing force at all locations, and the multiple pads 14 are clamped between the first clamping structure 12 and the second clamping structure 13, and an oil leakage gap is formed between the two pads 14 with the smallest distance from the oil collecting structure. The oil leakage gap is arranged opposite to the oil collecting structure, which can prevent the oil from adhering to the pad 14 and affecting the test results. The center of the oil leakage gap should be located directly below the rubber ring, so that the leaked oil can be prevented from adhering to the pad 14.

[0039] Specifically, the first clamping structure 12 includes a flange, which is fixedly connected to the support base 11, and the second clamping structure 13 includes a cover plate, which is fixedly connected to the flange by bolts. The structures of the flange and the cover plate are both existing technologies and are easy to obtain, which can reduce the test cost.

[0040] In some embodiments, the support base 11 includes a support seat 111 and a support frame 112 , the support frame 112 is fixedly disposed on the top of the support seat 111 , and the oil collecting structure is fixedly disposed on the top of the support seat 111 , and the oil collecting structure is disposed on one side of the support frame 112 .

[0041] In some embodiments, the oil collecting structure includes an oil collecting cup 15 and a scraper. The oil collecting cup 15 is used to collect leaked oil, and the scraper is used to pick up the oil attached to the outside of the clamping assembly. The oil collecting cup 15 is directly opposite to the connection between the first clamping structure 12 and the second clamping structure 13 to prevent the oil from dripping to other locations and affecting the test results.

[0042] In some embodiments, Figure 1 As shown, the oil supply mechanism 2 includes an oil tank 21, a hydraulic pump 22, a heater 23, a cooler 24, a pressure sensor 25 and a temperature sensor 26. The cooler 24, the oil tank 21, the heater 23 and the hydraulic pump 22 are connected in sequence. The outlet of the hydraulic pump 22 is connected to the liquid inlet through a liquid inlet pipeline 27, and the inlet of the cooler 24 is connected to the liquid outlet through a liquid outlet pipeline 28. The temperature sensor 26 is used to detect the temperature of the oil at the outlet of the hydraulic pump 22, and the pressure sensor 25 is used to detect the pressure at the outlet of the hydraulic pump 22. In this embodiment, the oil supply mechanism 2 also includes a controller 29. The controller 29 can control the operation of the hydraulic pump 22, the cooler 24 or the heater 23 according to actual needs through the pressure detected by the pressure sensor 25 and the temperature detected by the temperature sensor 26, so as to detect the leakage rate of the rubber ring at different temperatures, different pressures and different compression rates. In this embodiment, the controller 29 can be a centralized or distributed controller 29. For example, the controller 29 can be a single single-chip microcomputer or a distributed plurality of single-chip microcomputers. The control program can be run in the single-chip microcomputer to control each component to realize its function.

[0043] In some embodiments, the cooler 24 includes an air-cooled cooler, which is used to cool the oil and cool it to a set temperature before the oil returns to the oil tank 21. The heater 23 includes a tubular heater, which is used to heat the oil and heat it to a set temperature before the oil enters the containing chamber.

[0044] After the oil supply mechanism 2 is started, the sealing medium (i.e., oil) is heated by the heater 23 and pressurized by the hydraulic pump 22 along the inlet pipeline 27, flows through the pressure sensor 25 and the temperature sensor 26, and then enters the accommodating chamber of the sealing test mechanism 1. The sealing medium flowing out of the accommodating chamber is cooled by the cooler 24 along the return oil pipeline and then returns to the oil tank 21. The controller 29 controls the hydraulic pump 22, the heater 23, and the air-cooled cooler 24 to work according to the signals of the pressure sensor 25 and the temperature sensor 26. Before the test starts, the rubber ring to be tested is installed into the sealing test mechanism 1, and a suitable cushion block 14 is selected. After the installation is completed, the oil supply mechanism 2 is started. The timing starts after the temperature and pressure of the sealing medium stabilize to the set value. After the system runs for a certain period of time, the sealing medium volume (i.e., oil volume) on the surface of the sealing test mechanism 1 and in the oil collecting cup 15 is collected to calculate the volume leakage rate. After completing a single test, repeat it 3 times. After completing the repeated test, adjust different temperatures, different pressures, or replace cushion blocks 14 of different thicknesses to repeat.

[0045] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. Rubber ring sealing performance testing device, characterized in that: include: A sealing component testing mechanism (1) comprises a clamping assembly, a supporting base (11) and an oil collecting structure, wherein the supporting base (11) is fixedly connected to the clamping assembly to support the clamping assembly, the oil collecting structure is arranged at the bottom of the clamping assembly to receive the oil dripping from the clamping assembly, the clamping assembly comprises a first clamping structure (12), a second clamping structure (13) and a cushion block (14) with adjustable thickness, the cushion block (14) is arranged between the first clamping structure (12) and the second clamping structure (13) to adjust the distance between the first clamping structure (12) and the second clamping structure (13), and the first clamping structure (12) has a first receiving groove (121) , the second clamping structure (13) has a second accommodating groove (131); after the first clamping structure (12) and the second clamping structure (13) are fixedly connected by fasteners, the first accommodating groove (121) and the second accommodating groove (131) together form an accommodating chamber capable of accommodating a rubber ring; the bottom of the first accommodating groove (121) and the bottom of the second accommodating groove (131) are respectively in contact with two opposite side surfaces of the rubber ring; the first clamping structure (12) is fixedly connected to the supporting base (11); the second clamping structure (13) is provided with a liquid inlet and a liquid outlet; the second accommodating groove (131) is respectively in communication with the liquid inlet and the liquid outlet; An oil supply mechanism (2) is connected to the liquid inlet and the liquid outlet respectively to provide oil to the accommodating chamber.

2. The rubber ring sealing performance testing device according to claim 1, characterized in that: The spacer block (14) comprises a plurality of spacers with different thicknesses.

3. The rubber ring sealing performance testing device according to claim 2, characterized in that: Adjacent gaskets are bonded, or a plurality of gaskets are fixedly connected by fasteners, and the gaskets have the same thickness, or the thickness of each gasket is different.

4. The rubber ring sealing performance testing device according to claim 1, characterized in that: The number of the cushion block (14) is one, and the cushion block (14) is an arc-shaped structure having a notch, and the notch is arranged toward the oil collecting structure.

5. The rubber ring sealing performance testing device according to claim 1, characterized in that: There are a plurality of cushion blocks (14), which are arranged at intervals along the circumference of the rubber ring, and are clamped between the first clamping structure (12) and the second clamping structure (13). An oil leakage gap is formed between the two cushion blocks (14) that are at the shortest distance from the oil collecting structure, and the oil leakage gap is arranged opposite to the oil collecting structure.

6. The rubber ring sealing performance testing device according to claim 1, characterized in that: The first clamping structure (12) comprises a flange, which is fixedly connected to the support base (11), and the second clamping structure (13) comprises a cover plate, which is fixedly connected to the flange by bolts.

7. The rubber ring sealing performance testing device according to claim 1, characterized in that: The support base (11) comprises a support seat (111) and a support frame (112), wherein the support frame (112) is fixedly arranged on the top of the support seat (111), and the oil collecting structure is fixedly arranged on the top of the support seat (111), and the oil collecting structure is arranged on one side of the support frame (112).

8. The rubber ring sealing performance testing device according to claim 1, characterized in that: The oil collecting structure comprises an oil collecting cup (15) and a scraper blade, wherein the oil collecting cup (15) is used to collect leaked oil, and the scraper blade is used to pick up the oil adhering to the outside of the clamping component.

9. The rubber ring sealing performance testing device according to claim 1, characterized in that: The oil supply mechanism (2) comprises an oil tank (21), a hydraulic pump (22), a heater (23), a cooler (24), a pressure sensor (25) and a temperature sensor (26); the cooler (24), the oil tank (21), the heater (23) and the hydraulic pump (22) are connected in sequence; the outlet of the hydraulic pump (22) is connected to the liquid inlet; the inlet of the cooler (24) is connected to the liquid outlet; the temperature sensor (26) is used to detect the temperature of the oil at the outlet of the hydraulic pump (22); and the pressure sensor (25) is used to detect the pressure at the outlet of the hydraulic pump (22).

10. The rubber ring sealing performance testing device according to claim 9, characterized in that: The cooler (24) comprises an air-cooled cooler, and the heater (23) comprises a tubular heater.

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