Multifunctional detachable floating ring sealing device

Abstract

The utility model relates to the technical field of centrifugal compressor floating ring seal disassembly and replacement, and discloses a multifunctional floating ring seal disassembly device which comprises a first fixed bottom plate, a hydraulic device is fixedly arranged on the left side of the first fixed bottom plate, and four equal threaded holes are fixedly formed in the inner side of the first fixed bottom plate. A second fixing bottom plate is fixedly arranged on the inner side of the first fixing bottom plate. The multifunctional detachable floating ring sealing device is composed of guide screws, a fixed bottom plate and a positioning bottom plate which can also be combined with a hydraulic device, eight equal parts of holes and four equal parts of threaded holes are designed in the fixed bottom plate, four equal parts of holes are designed in the positioning bottom plate, the fixed bottom plate is fixed to an inner floating ring, and the four guide screws are screwed into the threaded holes of the fixed bottom plate. The positioning bottom plate is installed on the guide screw, meanwhile, the hydraulic device is installed between the shaft and the positioning bottom plate, the length of the guide screw is adjusted according to the axial size, the device is fastened through the nut, and the floating ring seal can be disassembled by applying force to the hydraulic device.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembly and replacement of floating ring seals for centrifugal compressors, and specifically to a multifunctional device for disassembling floating ring seals. Background Technique

[0002] The floating ring seal is composed of an inner floating ring, an outer floating ring, a floating ring seat, a gland, a spring, an anti-rotation pin, an auxiliary O-ring, etc. After the sealing oil is injected into the floating ring seal cavity, it leaks along the floating ring gap to the inside of the inner floating ring and the outside of the outer floating ring. Since the rotor is rotating at a high speed, the sealing oil flowing into the floating ring gap forms an oil film with a certain load-bearing capacity under the action of the rotating shaft. On the one hand, this oil film lifts the floating ring, enabling liquid lubrication between the floating ring and the journal, thereby reducing friction and wear. On the other hand, since the oil film fills the entire floating ring gap, it can prevent the leakage of gas medium and play a sealing role. Therefore, this seal is also called a sealing oil film. In addition, the sealing oil also has the functions of lubrication and cooling.

[0003] The inner and outer floating rings of the floating ring seal can move radially, so that the eccentricity and radial swing of the rotor relative to the casing can be compensated. The sealing performance of the floating ring section contact depends on the end faces fitting together, and the eccentricity and radial swing of the two compensating rotors relative to the casing. The sealing performance of the floating ring section contact is ensured by the arc fitting of the end faces, the flatness and roughness of the two surfaces. The floating ring is pressed against the section by the spring and the pressure drop of the working medium. Since the pressure difference on both sides of the inner floating ring is small, the inner floating ring is generally single-channel. While the pressure difference on both sides of the outer floating ring is large, in order to prevent excessive oil leakage, multiple channels of outer floating rings can be selected as appropriate. The function of the anti-rotation pin is to prevent the floating ring from rotating with the shaft, but at the same time, the anti-rotation pin does not affect the normal floating of the floating ring. The function of the O-ring is to prevent the sealing oil from leaking from the contact surface between the floating ring and the casing, and it is an auxiliary seal.

[0004] The sealing effect of the floating ring seal device is directly related to the floating ring gap. From the perspective of reducing the leakage of sealing oil and improving the efficiency of the floating ring, the floating ring gap should be minimized as much as possible. However, if the gap is too small, it will lead to the deterioration of the working conditions of the floating ring and even the occurrence of the floating ring hugging the shaft fault. Content of the Utility Model

[0005] The purpose of the utility model is to provide a multifunctional device for disassembling floating ring seals to solve the problem that if the gap is too small, it will lead to the deterioration of the working conditions of the floating ring and even the occurrence of the floating ring hugging the shaft fault mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a multifunctional device for disassembling floating ring seals, including a first fixed bottom plate, a hydraulic device is fixedly arranged on the left side of the first fixed bottom plate, and equally divided threaded holes are fixedly arranged inside the first fixed bottom plate.

[0007] Preferably, a second fixed base plate is fixedly arranged inside the first fixed base plate. An eight-equal-part hole is fixedly arranged inside the second fixed base plate. The guiding screw, the fixed base plate, and the positioning base plate can also be combined with a hydraulic device.

[0008] Preferably, a positioning base plate is arranged to the right of the second fixed base plate. The positioning base plate is in threaded connection with the first guiding screw. The fixed base plate is designed with an eight-equal-part hole and a four-equal-part threaded hole, and the positioning base plate is designed with four equal-part holes to fix the fixed base plate on the inner floating ring.

[0009] Preferably, the positioning base plate is in threaded connection with the second guiding screw and the third guiding screw. Adjust the length of the guiding screw according to the axial dimension, and use the nut fastening device to apply force to the hydraulic device to complete the disassembly of the floating ring seal.

[0010] Preferably, the positioning base plate is in threaded connection with the fourth guiding screw. A limiting rod is fixedly arranged inside the positioning base plate. The four guiding screws are screwed onto the threaded holes of the fixed base plate, the positioning base plate is installed on the guiding screws, and at the same time, the hydraulic device is installed in the middle of the shaft and the positioning base plate.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. The multifunctional floating ring seal disassembly device is composed of a guiding screw, a fixed base plate, a positioning base plate, and can also be combined with a hydraulic device. The fixed base plate is designed with an eight-equal-part hole and a four-equal-part threaded hole, and the positioning base plate is designed with four equal-part holes to fix the fixed base plate on the inner floating ring. The four guiding screws are screwed onto the threaded holes of the fixed base plate, the positioning base plate is installed on the guiding screws, and at the same time, the hydraulic device is installed in the middle of the shaft and the positioning base plate. Adjust the length of the guiding screw according to the axial dimension, and use the nut fastening device to apply force to the hydraulic device to complete the disassembly of the floating ring seal, effectively improving the convenience of the device.

[0013] 2. The multifunctional floating ring seal disassembly device has strong versatility and is simple to manufacture. At the same time, it does no damage to the disassembled floating ring seal, shaft, and seal cavity, can be reused, extends the service life of the floating ring seal, shaft, and seal cavity, saves costs, and effectively improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 is a sectional structural schematic diagram of the present utility model;

[0016] Figure 3 is a partial sectional structural schematic diagram of the present utility model;

[0017] Figure 4This is a partial three-dimensional structural schematic diagram of the utility model.

[0018] In the figure: 1. First fixed bottom plate; 2. Hydraulic device; 3. Four-equal-part threaded holes; 4. Second fixed bottom plate; 5. Eight-equal-part holes; 6. Positioning bottom plate; 7. First guiding screw rod; 8. Second guiding screw rod; 9. Third guiding screw rod; 10. Fourth guiding screw rod; 11. Limit rod. Specific implementation manner

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1 - 4 , the present utility model provides a technical solution: a multi-functional detachable floating ring seal device, including a first fixed bottom plate 1, a hydraulic device 2 is fixedly arranged on the left side of the first fixed bottom plate 1, and four-equal-part threaded holes 3 are fixedly arranged on the inner side of the first fixed bottom plate 1.

[0021] A second fixed bottom plate 4 is fixedly arranged on the inner side of the first fixed bottom plate 1, eight-equal-part holes 5 are fixedly arranged on the inner side of the second fixed bottom plate 4, a positioning bottom plate 6 is arranged on the right side of the second fixed bottom plate 4, the positioning bottom plate 6 is threadedly connected with the first guiding screw rod 7, the positioning bottom plate 6 is threadedly connected with the second guiding screw rod 8, the positioning bottom plate 6 is threadedly connected with the third guiding screw rod 9, the positioning bottom plate 6 is threadedly connected with the fourth guiding screw rod 10, and a limit rod 11 is fixedly arranged on the inner side of the positioning bottom plate 6. When using the multi-functional detachable floating ring seal device, it can also be jointly composed of guiding screw rods, fixed bottom plates, and the positioning bottom plate 6 and the hydraulic device 2. The fixed bottom plate is designed with eight-equal-part holes 5 and four-equal-part threaded holes 3, and four equal-part holes are designed on the positioning bottom plate 6. The fixed bottom plate is fixed on the inner floating ring, the four guiding screw rods are screwed onto the threaded holes of the fixed bottom plate, the positioning bottom plate 6 is installed on the guiding screw rods, and at the same time, the hydraulic device 2 is installed in the middle of the shaft and the positioning bottom plate 6. Adjust the length of the guiding screw rods according to the axial dimension, fasten the device with nuts, and apply force to the hydraulic device 2 to complete the disassembly work of the floating ring seal.

[0022] Working principle: When using the multi-functional detachable floating ring seal device, it is composed of a guiding screw, a fixed bottom plate, and a positioning bottom plate 6 which can also be combined with a hydraulic device 2. The fixed bottom plate is designed with eight equally divided holes 5 and four equally divided threaded holes 3, and the positioning bottom plate 6 is designed with four equally divided holes. The fixed bottom plate is fixed on the inner floating ring, four guiding screws are screwed onto the threaded holes of the fixed bottom plate, the positioning bottom plate 6 is installed on the guiding screws, and at the same time, the hydraulic device 2 is installed in the middle of the shaft and the positioning bottom plate 6. Adjust the length of the guiding screws according to the axial dimension, use the nut fastening device, and apply force to the hydraulic device 2 to complete the disassembly work of the floating ring seal.

[0023] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than limiting the protection scope of the present invention. Any simple modification or equivalent replacement of the technical solution of the present invention by those of ordinary skill in the art shall not depart from the essence and scope of the technical solution of the present invention.

Claims

1. Multi-functional detachable floating ring seal device, including fixed bottom plate one (1), characterized in that: A hydraulic device (2) is fixedly arranged on the left side of the first fixed base plate (1), and a four-equal-part threaded hole (3) is fixedly arranged inside the first fixed base plate (1).

2. The multifunctional detachable floating ring seal device according to claim 1, wherein: A second fixed base plate (4) is fixedly arranged inside the first fixed base plate (1), and an eight-equal-part hole (5) is fixedly arranged inside the second fixed base plate (4).

3. The multifunctional detachable floating ring seal device according to claim 2, wherein: A positioning base plate (6) is arranged to the right of the second fixed base plate (4), and the positioning base plate (6) is in threaded connection with a first guiding screw rod (7).

4. The multifunctional detachable floating ring seal device according to claim 3, characterized in that: The positioning base plate (6) is in threaded connection with a second guiding screw rod (8), and the positioning base plate (6) is in threaded connection with a third guiding screw rod (9).

5. The multifunctional detachable floating ring seal device according to claim 4, characterized in that: The positioning base plate (6) is in threaded connection with a fourth guiding screw rod (10), and a limiting rod (11) is fixedly arranged inside the positioning base plate (6).

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