Mechanical seal constant pressure testing device

Abstract

The utility model belongs to the technical field of sealing test, particularly relates to a mechanical sealing constant-pressure testing device, and aims to solve the problems that in the conventional mechanical sealing piece test, a mechanical sealing piece is usually soaked in liquid, the interior of the mechanical sealing piece is pressurized, and the sealing effect of the mechanical sealing piece is judged by observing whether bubbles exist in the liquid or not. In order to solve the problem that the surface of a mechanical sealing element carries a little amount of liquid after the mechanical sealing element is tested, and water spots may be generated on the surface if the mechanical sealing element is not cleaned in time, the utility model provides the following scheme that the mechanical sealing element testing device comprises a bottom plate, and the bottom of the bottom plate is fixedly connected with a plurality of supporting legs. When the mechanical sealing element testing device is used, the testing mechanism can accurately evaluate the sealing performance of a mechanical sealing element and improve the testing efficiency, the drying mechanism can quickly remove moisture and residues and enhance the stability of the mechanical sealing element, and the testing mechanism and the drying mechanism are combined for use, so that the accuracy and the reliability of the testing process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing testing, in particular to a mechanical sealing constant pressure testing device. Background Art

[0002] Mechanical seals are widely used in industrial equipment to prevent media leakage and ensure the stability and safety of the system. Sealing performance is one of the important indicators of mechanical seals and is of great significance for ensuring the normal operation of equipment. Therefore, constant pressure testing of mechanical seals to evaluate their sealing performance is an important part of ensuring the safe and stable operation of industrial equipment.

[0003] In traditional mechanical seal testing, the seal is usually immersed in liquid and pressurized inside. The sealing effect of the seal is judged by observing whether there are bubbles in the liquid. However, after the test, a small amount of liquid will be carried on the surface of the seal. If it is not cleaned in time, water stains may form on the surface.

[0004] In response to the above problems, this utility model document proposes a mechanical seal constant pressure testing device. Utility Model Content

[0005] The utility model provides a mechanical seal constant pressure testing device, which solves the problem existing in the prior art that in the traditional test of mechanical seals, the mechanical seals are usually immersed in liquid and pressurized inside, and the sealing effect of the mechanical seals is judged by observing whether there are bubbles in the liquid. However, after the mechanical seal is tested, a small amount of liquid will be carried on its surface. If it is not cleaned in time, water stains may be generated on its surface.

[0006] The utility model provides the following technical solutions:

[0007] A mechanical seal constant pressure test device comprises a base plate, a plurality of legs being fixedly connected to the bottom of the base plate, a test box being fixedly connected to the top of the base plate, a drain pipe being fixedly connected to the bottom of the test box, and the other end of the drain pipe passing through the top of the base plate and extending to the bottom of the base plate;

[0008] A drying mechanism is provided on the top of the bottom plate and is used to dry the mechanical seal;

[0009] The testing mechanism is arranged on the top of the test box and is used to test the sealing performance of the mechanical seal.

[0010] In a possible design, the drying mechanism includes a drying box, a drying cylinder, an air outlet nozzle, a connecting pipe, a connecting box, a hot air blower, a drying rod and a placement ring. A mounting hole is opened inside the bottom plate. The outer wall of the drying box is fixedly connected to the inner wall of the mounting hole. The inner wall of the drying box is fixedly connected to a plurality of connecting blocks. One side of the plurality of connecting blocks is fixedly connected to the outer wall of the drying cylinder. The plurality of air outlet nozzles are fixedly connected to the inner wall of the drying cylinder. One end of the plurality of connecting pipes is fixedly connected to the bottom of the drying cylinder. The other end of the plurality of connecting pipes is fixed It is connected to the outer wall of the connecting box, and the outer wall of the connecting box is fixedly connected with an air supply pipe. The other end of the hot air pipe passes through the inner wall of the drying box and is fixedly connected to the output end of the hot air blower. The bottom of the hot air blower is fixedly connected to the top of the bottom plate. The bottom of the connecting box is fixedly connected to a support rod, and both ends of the support rod are fixedly connected to the inner wall of the drying box. The drying rod is arranged inside the drying cylinder, and the bottom of the drying rod is fixedly connected to the top of the connecting box. The outer wall of the drying rod is provided with a plurality of air outlet holes, and the inner wall of the placement ring is fixedly connected to the outer wall of the drying rod.

[0011] In a possible design, a water collecting frame is fixedly connected to the bottom of the base plate, and a water collecting box is inserted into the water collecting frame for collecting liquid dripping from the mechanical seal.

[0012] In one possible design, the testing mechanism includes a fixed frame, a hydraulic cylinder, a sealing cover, a connecting pipe, an air pump, a first sealing ring, a placing table, a stabilizing cone and a second sealing ring. The bottom of the fixed frame is fixedly connected to the top of the base plate, the output end of the hydraulic cylinder is fixedly connected to the top of the sealing cover, the other end of the hydraulic cylinder is fixedly connected to the top inner wall of the fixed frame, the first sealing ring is fixedly connected to the inner wall of the sealing cover, one end of the connecting pipe is fixedly connected to the output end of the air pump, the other end of the connecting pipe is fixedly connected to the top of the sealing cover, the bottom of the air pump is fixedly connected to the top of the rectangular block, the bottom of the rectangular block is fixedly connected to the top of the base plate, the bottom of the placing table is fixedly connected to the bottom inner wall of the test box, the bottom of the stabilizing cone is fixedly connected to the top of the placing table, the second sealing ring is fixedly connected to the top of the placing table, and the outer wall of the drain pipe is provided with a switch valve.

[0013] In a possible design, a solenoid valve is provided on the outer wall of the connecting pipe, a degassing valve is provided on the top of the sealing cover, and a pressure gauge is fixedly connected to the outer wall of the sealing cover.

[0014] In one possible design, a stabilizing frame is fixedly connected to the bottom inner wall of the test box, the top of the stabilizing frame is fixedly connected to the top inner wall of the fixing frame, a sliding groove is provided on one side of the stabilizing frame, a slider is slidably connected inside the sliding groove, and one side of the slider is fixedly connected to the outer wall of the sealing cover.

[0015] In the present application, when in use, the mechanical seal to be tested is installed on the placement table inside the test box to ensure that the mechanical seal is in close contact with the second sealing ring. At the same time, the inner wall of the mechanical seal allows the stabilizing cone to be used to stabilize the mechanical seal to prevent it from moving during the test. Then the hydraulic cylinder is started, and the output end of the hydraulic cylinder pushes the sealing cover to move downward until the first sealing ring is in close contact with the top of the mechanical seal. At the same time, the slider slides in the slide groove of the stabilizing frame to ensure smooth movement of the sealing cover. At this time, the air pump is started, and gas is filled into the sealing cover through the connecting pipe, and the test liquid is injected into the interior of the test box. The solenoid valve can lock the gas when the air pump is turned off after a certain air pressure is filled, thereby ensuring that the pressure in the mechanical seal is stable and reaches a predetermined value. At this time, the reading of the pressure gauge can be observed to confirm whether the pressure meets the requirements and maintain the predetermined pressure in the mechanical seal for a period of time. During the test, observe whether there is any gas leakage. This can be done by observing whether the reading of the pressure gauge is stable, or by observing whether there are bubbles in the test liquid. When the test time reaches the predetermined value, open the air release valve to release the gas in the sealing cover, and then start the hydraulic cylinder to make the sealing cover rise back to its original position and discharge the liquid inside the test box through the drain pipe. After the test is completed, take the mechanical seal out of the test box and place it on the placement ring of the drying mechanism. Start the hot air blower, and the hot air blower will send hot air into the connecting box through the air pipe, and then enter the drying cylinder through the connecting pipe. The hot air is evenly sprayed out through multiple air outlet nozzles inside the drying cylinder to dry the mechanical seal. At the same time, the air outlet holes on the drying rod also release hot air to dry the inside of the mechanical seal, thereby enhancing the drying effect. At the same time, the water collection frame and water collection box can collect the liquid dripping from the mechanical seal for easy cleaning and recycling.

[0016] In the present invention, the mechanical seal constant pressure test device can achieve the effect of quickly removing moisture from the surface of the mechanical seal through the drying mechanism, thereby avoiding water stains that interfere with its subsequent use and helping to keep the mechanical seal in a dry state;

[0017] In the present invention, the mechanical seal constant pressure test device can achieve the effect of accurately evaluating the sealing performance of the mechanical seal through the testing mechanism, thereby making the testing process more intuitive and convenient;

[0018] In the present invention, the testing mechanism can accurately evaluate the sealing performance of the mechanical seal and improve the testing efficiency, while the drying mechanism can quickly remove moisture and residues and enhance the stability of the mechanical seal. The combined use of the two improves the accuracy and reliability of the testing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1A schematic diagram of the main structure of a mechanical seal constant pressure test device provided by an embodiment of the present utility model;

[0020] Figure 2 A schematic side view of a mechanical seal constant pressure test device provided by an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of an enlarged cross-sectional structure of a test mechanism of a mechanical seal constant pressure test device provided by an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of an enlarged cross-sectional structure of a drying part of a mechanical seal constant pressure testing device provided by an embodiment of the present utility model.

[0023] Reference numerals:

[0024] 1. Base plate; 2. Test box; 3. Drain pipe; 4. Fixing frame; 5. Hydraulic cylinder; 6. Sealing cover; 7. Pressure gauge; 8. Connecting pipe; 9. Air pump; 10. Stabilizing frame; 11. Slider; 12. First sealing ring; 13. Placement table; 14. Stabilizing cone; 15. Second sealing ring; 16. Drying box; 17. Water collection frame; 18. Drying cylinder; 19. Air outlet nozzle; 20. Connecting pipe; 21. Connecting box; 22. Hot air blower; 23. Drying rod; 24. Placement ring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Example 1

[0027] Please refer to Figure 1-Figure 4 A testing device includes: a base plate 1, a plurality of legs are fixedly connected to the bottom of the base plate 1, so that the operation of the device is more stable, a test box 2 is fixedly connected to the top of the base plate 1, and a drain pipe 3 is fixedly connected to the bottom of the test box 2. The other end of the drain pipe 3 passes through the top of the base plate 1 and extends to the bottom of the base plate 1, so that the liquid inside the test box 2 can be discharged through the drain pipe 3, and a stabilizing frame 10 is fixedly connected to the inner wall of the bottom side of the test box 2. The top of the stabilizing frame 10 is fixedly connected to the inner wall of the top side of the fixing frame 4. A slide groove is opened on one side of the stabilizing frame 10, and a slider 11 is slidably connected to the inside of the slide groove. One side of the slider 11 is fixedly connected to the outer wall of the sealing cover 6, so that the slider 11 slides in the slide groove of the stabilizing frame 10, thereby ensuring the smooth movement of the sealing cover 6.

[0028] The drying mechanism is arranged on the top of the bottom plate 1 and is used to dry the mechanical seal. The drying mechanism includes a drying box 16, a drying cylinder 18, an air outlet nozzle 19, a connecting pipe 20, a connecting box 21, a hot air blower 22, a drying rod 23 and a placement ring 24. A mounting hole is opened inside the bottom plate 1. The outer wall of the drying box 16 is fixedly connected to the inner wall of the mounting hole. The inner wall of the drying box 16 is fixedly connected with a plurality of connecting blocks. One side of the plurality of connecting blocks is fixedly connected to the outer wall of the drying cylinder 18. The plurality of air outlet nozzles 19 are fixedly connected to the inner wall of the drying cylinder 18. One end of the plurality of connecting pipes 20 is fixedly connected to the bottom of the drying cylinder 18. The other end of the plurality of connecting pipes 20 is fixedly connected to the outer wall of the connecting box 21. The outer wall of the connecting box 21 is fixedly connected with an air supply pipe. The other end of the hot air pipe passes through the inner wall of the drying box 16 and is fixedly connected to the output end of the hot air blower 22. The hot air blower 2 The bottom of 2 is fixedly connected to the top of the bottom plate 1, and the bottom of the connecting box 21 is fixedly connected to a support rod, and both ends of the support rod are fixedly connected to the inner wall of the drying box 16. The drying rod 23 is arranged inside the drying cylinder 18, and the bottom of the drying rod 23 is fixedly connected to the top of the connecting box 21. The outer wall of the drying rod 23 is provided with a plurality of air outlet holes, and the inner wall of the placing ring 24 is fixedly connected to the outer wall of the drying rod 23. Therefore, after the mechanical seal is taken out from the test box 2, it can be placed on the placing ring 24 of the drying mechanism, and the hot air blower 22 is started. The hot air blower 22 sends hot air into the connecting box 21 through the air supply pipe, and then enters the interior of the drying cylinder 18 through the connecting pipe 20. The hot air is evenly ejected through a plurality of air outlet nozzles 19 inside the drying cylinder 18 to dry the mechanical seal. At the same time, the air outlet holes on the drying rod 23 also release hot air to dry the inside of the mechanical seal, thereby enhancing the drying effect.

[0029] 13. The test mechanism is arranged at the top of the test box 2 and is used to test the sealing performance of the mechanical seal. The test mechanism includes a fixed frame 4, a hydraulic cylinder 5, a sealing cover 6, a connecting pipe 8, an air pump 9, a first sealing ring 12, a placement table 13, a stabilizing cone 14 and a second sealing ring 15. The bottom of the fixed frame 4 is fixedly connected to the top of the base plate 1, the output end of the hydraulic cylinder 5 is fixedly connected to the top of the sealing cover 6, the other end of the hydraulic cylinder 5 is fixedly connected to the top inner wall of the fixed frame 4, the first sealing ring 12 is fixedly connected to the inner wall of the sealing cover 6, one end of the connecting pipe 8 is fixedly connected to the output end of the air pump 9, the other end of the connecting pipe 8 is fixedly connected to the top of the sealing cover 6, the bottom of the air pump 9 is fixedly connected to the top of the rectangular block, the bottom of the rectangular block is fixedly connected to the top of the base plate 1, the bottom of the placement table 13 is fixedly connected to the bottom inner wall of the test box 2, the bottom of the stabilizing cone 14 is fixedly connected to the top of the placement table 13, the second sealing ring 15 is fixedly connected to the top of the placement table 13, and the outer wall of the drain pipe 3 is set There is a switch valve, so that the mechanical seal to be tested can be installed on the placement table 13 inside the test box 2, ensuring that the mechanical seal is in close contact with the second sealing ring 15. At the same time, the inner wall of the mechanical seal, so that the stabilizing cone 14 can be used to stabilize the mechanical seal to prevent it from moving during the test process, and then the hydraulic cylinder 5 is started. The output end of the hydraulic cylinder 5 pushes the sealing cover 6 to move downward until the first sealing ring 12 is in close contact with the top of the mechanical seal. At this time, the air pump 9 is started, and gas is filled into the sealing cover 6 through the connecting pipe 8, and the test liquid is injected into the interior of the test box 2. The solenoid valve can lock the gas when the air pump 9 is turned off after a certain air pressure is filled, thereby ensuring that the pressure in the mechanical seal is stable and reaches a predetermined value. At this time, the reading of the pressure gauge 7 can be observed to confirm whether the pressure meets the requirement. The predetermined pressure is maintained in the mechanical seal for a period of time to observe whether there is any gas leakage. This can be achieved by observing whether the reading of the pressure gauge 7 is stable, or by observing whether bubbles are generated in the test liquid.

[0030] The present application can be used in the field of mechanical seal constant pressure testing technology, and can also be used in other fields applicable to the present application.

[0031] The specific model of the hot air blower 22 is HBO-DR-3380-BF-809 / 50KW, and its structure and mechanism will not be described in detail here;

[0032] Example 2

[0033] On the basis of Example 1, the following improvements are made:

[0034] A mechanical seal constant pressure test device, which is applied to the field of seal test technology, includes:

[0035] A water collecting frame 17 is fixedly connected to the bottom of the base plate 1 , and a water collecting box is inserted into the water collecting frame 17 for collecting liquid dripping from the mechanical seal, thereby enhancing the applicability of the device.

[0036] The outer wall of the connecting pipe 8 is provided with a solenoid valve, the top of the sealing cover 6 is provided with an air release valve, and the outer wall of the sealing cover 6 is fixedly connected to a pressure gauge 7, so that the pressure can be judged by observing the reading of the pressure gauge 7 to determine whether the pressure reaches the specified value.

[0037] However, as is well known to those skilled in the art, the working principles and wiring methods of the hydraulic cylinder 5, pressure gauge 7, air pump 9 and hot air blower 22 are commonplace, and are all conventional means or common knowledge, so they will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0038] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. The embodiments of the present utility model and the features of the embodiments can be combined with each other unless there is a conflict. Therefore, the scope of protection of the present utility model shall be based on the scope of protection of the claims.

Claims

1. A mechanical seal constant pressure test device, characterized in that: include: A base plate (1), wherein a plurality of legs are fixedly connected to the bottom of the base plate (1), a test box (2) is fixedly connected to the top of the base plate (1), a drain pipe (3) is fixedly connected to the bottom of the test box (2), and the other end of the drain pipe (3) passes through the top of the base plate (1) and extends to the bottom of the base plate (1); A drying mechanism, which is arranged on the top of the bottom plate (1) and is used to dry the mechanical seal; A testing mechanism is provided on the top of the test box (2) and is used to test the sealing performance of the mechanical seal.

2. A mechanical seal constant pressure test device according to claim 1, characterized in that: The drying mechanism comprises a drying box (16), a drying cylinder (18), an air outlet nozzle (19), a connecting pipe (20), a connecting box (21), a hot air blower (22), a drying rod (23) and a placement ring (24); a mounting hole is provided inside the bottom plate (1); the outer wall of the drying box (16) is fixedly connected to the inner wall of the mounting hole; the inner wall of the drying box (16) is fixedly connected to a plurality of connecting blocks; one side of the plurality of connecting blocks is fixedly connected to the outer wall of the drying cylinder (18); the plurality of air outlet nozzles (19) are fixedly connected to the inner wall of the drying cylinder (18); one end of the plurality of connecting pipes (20) is fixedly connected to the bottom of the drying cylinder (18); the other end of the plurality of connecting pipes (20) is fixedly connected to the inner wall of the drying cylinder (18); The outer wall of the connecting box (21) is fixedly connected to an air supply pipe, the other end of the hot air pipe passes through the inner wall of the drying box (16) and is fixedly connected to the output end of the hot air blower (22), the bottom of the hot air blower (22) is fixedly connected to the top of the bottom plate (1), the bottom of the connecting box (21) is fixedly connected to a support rod, both ends of the support rod are fixedly connected to the inner wall of the drying box (16), the drying rod (23) is arranged inside the drying cylinder (18), the bottom of the drying rod (23) is fixedly connected to the top of the connecting box (21), the outer wall of the drying rod (23) is provided with a plurality of air outlet holes, and the inner wall of the placement ring (24) is fixedly connected to the outer wall of the drying rod (23).

3. A mechanical seal constant pressure testing device according to claim 2, characterized in that: The bottom of the base plate (1) is fixedly connected to a water collecting frame (17), and a water collecting box is inserted into the water collecting frame (17) for collecting liquid dripping from the mechanical seal.

4. A mechanical seal constant pressure testing device according to claim 1, characterized in that: The testing mechanism comprises a fixed frame (4), a hydraulic cylinder (5), a sealing cover (6), a connecting pipe (8), an air pump (9), a first sealing ring (12), a placing table (13), a stabilizing cone (14) and a second sealing ring (15), wherein the bottom of the fixed frame (4) is fixedly connected to the top of the bottom plate (1), the output end of the hydraulic cylinder (5) is fixedly connected to the top of the sealing cover (6), the other end of the hydraulic cylinder (5) is fixedly connected to the top inner wall of the fixed frame (4), the first sealing ring (12) is fixedly connected to the inner wall of the sealing cover (6), the connecting pipe (8 ) is fixedly connected to the output end of the air pump (9), the other end of the connecting pipe (8) is fixedly connected to the top of the sealing cover (6), the bottom of the air pump (9) is fixedly connected to the top of the rectangular block, the bottom of the rectangular block is fixedly connected to the top of the bottom plate (1), the bottom of the placement table (13) is fixedly connected to the bottom inner wall of the test box (2), the bottom of the stabilizing cone (14) is fixedly connected to the top of the placement table (13), the second sealing ring (15) is fixedly connected to the top of the placement table (13), and the outer wall of the drain pipe (3) is provided with a switch valve.

5. A mechanical seal constant pressure testing device according to claim 4, characterized in that: The outer wall of the connecting pipe (8) is provided with a solenoid valve, the top of the sealing cover (6) is provided with an air release valve, and the outer wall of the sealing cover (6) is fixedly connected to a pressure gauge (7).

6. A mechanical seal constant pressure testing device according to claim 1, characterized in that: The bottom inner wall of the test box (2) is fixedly connected to a stabilizing frame (10), the top of the stabilizing frame (10) is fixedly connected to the top inner wall of the fixing frame (4), a sliding groove is provided on one side of the stabilizing frame (10), a slider (11) is slidably connected inside the sliding groove, and one side of the slider (11) is fixedly connected to the outer wall of the sealing cover (6).

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