A centrifugal compressor floating ring barrier assembly

Abstract

The utility model relates to centrifugal compressor sealing technical field especially discloses a centrifugal compressor floating ring leakproof subassembly, including seal ring, spring and connecting ring, every connecting mechanism all includes screw rod and fixed component, and connecting ring is connected in the outside of screw rod through through -hole sliding, and the inside of every through -hole all is provided with the accommodating hole of placing fixed component, realizes the detachable connection of seal ring and connecting ring through the connecting mechanism that seal ring both ends set up, and connecting ring is through the sliding sleeve joint in the outside of screw rod through the through -hole, and the accommodation of cooperation accommodating hole to fixed component, avoid fixed component to project influence seal ring and the use of connecting ring, when needing to disassemble, use the tool to insert the recess to go to the rotation screw cylinder to make the connection of screw cylinder and screw rod to remove, at this moment, pull up seal ring or connecting ring to make both separate to complete the disassembly of floating ring leakproof subassembly, therefore need not integral disassembly component, the maintenance replacement of floating ring in centrifugal compressor operation is convenient, improves the replacement efficiency.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal compressor sealing technology, and in particular to a centrifugal compressor floating ring leak-proof assembly. Background Technology

[0002] The floating ring leak-proof assembly of a centrifugal compressor is a key sealing device used to control fluid leakage in a centrifugal compressor. It is mainly used for gap sealing between the rotor and stator, and is especially suitable for high-pressure and high-speed operating conditions. Its core function is to reduce the leakage of high-pressure media (such as gas, steam, etc.) inside the compressor to low-pressure areas or the outside through a special structural design, while reducing the consumption of sealing media such as lubricating oil, ensuring efficient and safe operation of the unit. It has the following structure: 1. Floating ring body: The floating ring body is the core component for achieving the sealing function. It is fitted onto the relevant connecting parts and forms the first sealing barrier by relying on the tiny gap between itself and the rotor and the special material properties. 2. Spring: The spring is connected to hooks at both ends, and the spring surrounds the middle of the floating ring body and is connected by two hooks.

[0003] The floating ring body is fitted onto the relevant connecting parts. When the floating ring wears or the seal fails, the entire leak-proof assembly needs to be disassembled. Due to the complex operating environment of the centrifugal compressor, the narrow gap between the rotor and stator, and the fact that the components are often nested inside the sealing housing, the entire disassembly requires stopping the machine and disassembling a large number of related structures. The operation steps are numerous, so a lot of time is spent on disassembly and assembly, which reduces the efficiency of replacement. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a floating ring leak-proof assembly for centrifugal compressors. This solves the problem that when the floating ring body is fitted onto related connecting parts, and the floating ring wears out or the seal fails, the entire leak-proof assembly needs to be disassembled. Due to the complex operating environment of centrifugal compressors, the narrow gap between the rotor and stator, and the fact that the assembly is often nested inside the sealing housing, the entire disassembly requires stopping the machine and disassembling a large number of related structures, resulting in many operation steps and a significant amount of time spent on disassembly and assembly, thus reducing the efficiency of replacement.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A centrifugal compressor floating ring leak-proof assembly includes a sealing ring, a spring, and a connecting ring. Both ends of the sealing ring are provided with connecting mechanisms for installing the connecting ring. Each connecting mechanism includes a screw and a fixing component. The screw is located outside the sealing ring, and the fixing component is threadedly connected to the outside of the screw. Both ends of the connecting ring are slidably connected to the outside of the two screws. Both ends of the connecting ring have through holes, and the connecting ring is slidably connected to the outside of the screws through the through holes. Each through hole has a receiving hole for placing the fixing component.

[0006] Preferably, both ends of the sealing ring are provided with mounting holes, the screw is slidably connected inside the mounting holes, and both ends of the sealing ring are provided with limiting holes for restricting the rotation of the screw. The limiting holes are connected to the interior of the mounting holes, and the end of the screw away from the fixing component is engaged inside the limiting hole.

[0007] Preferably, each screw has a washer movably fitted onto its exterior, and the washer is located inside the receiving hole.

[0008] Preferably, the sealing ring has positioning holes at both ends, and positioning blocks are fixedly installed at both ends of the connecting ring. The positioning blocks are engaged with the inside of the positioning holes. Each positioning block has a limiting spring piece on its outside to restrict the movement of the positioning block. Each positioning block has a deformation groove on its outside. One end of the limiting spring piece is fixedly connected to the inside of the deformation groove, and the other end extends outward.

[0009] Preferably, each fixing component includes a threaded cylinder and a groove, the threaded cylinder being threadedly connected to the outside of the screw, and the groove being formed on the outside of the threaded cylinder and used to rotate the threaded cylinder.

[0010] Compared with the prior art, the present invention has the following beneficial effects: The sealing ring and connecting ring are detachably connected by a connecting mechanism at both ends of the sealing ring. The connecting ring slides onto the outside of the screw through a through hole, and the receiving hole accommodates the fixed component, preventing the fixed component from protruding and affecting the use of the sealing ring and connecting ring. When disassembly is required, a tool is inserted into the groove to rotate the threaded cylinder to disengage the threaded cylinder from the screw. At this time, the sealing ring or connecting ring is pulled upward to separate the two, thus completing the disassembly of the floating ring leakage isolation component. Therefore, it is not necessary to disassemble the entire component, which facilitates the maintenance and replacement of the floating ring during the operation of the centrifugal compressor and improves the replacement efficiency. Attached Figure Description

[0011] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This utility model Figure 1 Structural diagram of the spring; Figure 3 This utility model Figure 1 Exploded view of the sealing ring; Figure 4 This utility model Figure 1 Structural diagram of the middle screw; Figure 5 This utility model Figure 1 Structural diagram of the connecting ring; Figure 6 This utility model Figure 3 Structure diagram of the positioning block.

[0013] Legend: 1. Sealing ring; 2. Connecting ring; 3. Screw; 4. Through hole; 5. Receiving hole; 6. Mounting hole; 7. Limiting hole; 8. Washer; 9. Positioning hole; 10. Positioning block; 11. Limiting spring; 12. Deformation groove; 13. Threaded cylinder; 14. Groove; 15. Spring. Detailed Implementation

[0014] This application provides a centrifugal compressor floating ring leak-proof assembly, which effectively solves the technical problem that when the floating ring body is sleeved on the relevant connecting parts, the entire leak-proof assembly needs to be disassembled when the floating ring wears or the seal fails. Due to the complex operating environment of centrifugal compressors, the narrow gap between the rotor and stator, and the fact that the assembly is often nested inside the sealing shell, the entire disassembly requires stopping the machine and disassembling a large number of related structures. The operation steps are numerous, so a lot of time is spent on disassembly and assembly, resulting in reduced replacement efficiency.

[0015] Example like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the technical solution in this application embodiment effectively solves the problem that when the floating ring body is sleeved on the relevant connecting parts, and the floating ring wears or the seal fails, the entire leakage isolation assembly needs to be disassembled as a whole. Due to the complex operating environment of centrifugal compressors, the narrow gap between the rotor and stator, and the fact that the components are often nested inside the sealing shell, the overall disassembly requires stopping the machine and disassembling a large number of related structures, which involves many operation steps and therefore takes a lot of time, resulting in reduced replacement efficiency. The overall approach is as follows: To address the problems existing in the prior art, this utility model provides a centrifugal compressor floating ring leak-proof assembly, including a sealing ring 1, a spring 15, and a connecting ring 2. Both ends of the sealing ring 1 are provided with connecting mechanisms for installing the connecting ring 2. Each connecting mechanism includes a screw 3 and a fixing component. The screw 3 is located outside the sealing ring 1, and the fixing component is threadedly connected to the outside of the screw 3. Both ends of the connecting ring 2 are slidably connected to the outside of the two screws 3.

[0016] Both ends of the connecting ring 2 are provided with through holes 4. The connecting ring 2 is slidably connected to the outside of the screw 3 through the through holes 4. Each through hole 4 is provided with a receiving hole 5 for placing the fixing component.

[0017] Both ends of the sealing ring 1 are provided with mounting holes 6. The screw 3 is slidably connected inside the mounting holes 6. Both ends of the sealing ring 1 are provided with limiting holes 7 for limiting the rotation of the screw 3. The limiting holes 7 are connected to the interior of the mounting holes 6. The end of the screw 3 away from the fixing component is engaged inside the limiting holes 7. The mounting holes 6 facilitate the installation and removal of the screw 3. The limiting holes 7 restrict the circumferential rotation of the screw 3 in the mounting holes 6, preventing the screw 3 from rotating when connected to the fixing component, thus improving the convenience of operation.

[0018] Each screw 3 is fitted with a washer 8 on its outside. The washer 8 is located inside the receiving hole 5. The washer 8 can fill the gap between the fixing component and the inner wall of the receiving hole 5, reduce the collision and wear between the fixing component and the connecting ring 2 when the compressor vibrates, and extend the component life.

[0019] Both ends of the sealing ring 1 are provided with positioning holes 9, and both ends of the connecting ring 2 are fixedly installed with positioning blocks 10. The positioning blocks 10 are engaged with the interior of the positioning holes 9. Each positioning block 10 is provided with a limiting spring 11 to restrict the movement of the positioning block 10. Each positioning block 10 is provided with a deformation groove 12. One end of the limiting spring 11 is fixedly connected to the interior of the deformation groove 12, and the other end extends outward. The engagement between the positioning blocks 10 and the positioning holes 9 can help share the force on the connecting mechanism and strengthen the assembly. The overall structural stability of the component is ensured by the limiting spring 11, which restricts the movement of the positioning block 10 within the positioning hole 9, preventing the positioning block 10 from dislodging from the positioning hole 9 due to vibration or impact during compressor operation, and ensuring the reliability of the connection between the positioning block 10 and the positioning hole 9. The deformation groove 12 on the outside of the positioning block 10 provides deformation space for the limiting spring 11, allowing the spring to retract inward when the positioning block 10 is inserted into the positioning hole 9, and after being inserted, it can extend outward and press against the inner wall of the positioning hole 9 by relying on the restoring force, thus ensuring the limiting effect.

[0020] Each fixed component includes a threaded cylinder 13 and a groove 14. The threaded cylinder 13 is threaded to the outside of the screw 3, and the groove 14 is formed on the outside of the threaded cylinder 13 and is used to rotate the threaded cylinder 13. The groove 14 facilitates the use of tools to rotate the threaded cylinder 13, improving the ease of operation.

[0021] Example 1 The sealing ring 1 and the connecting ring 2 are detachably connected by the connecting mechanism set at both ends of the sealing ring 1. The connecting ring 2 is slidably sleeved on the outside of the screw 3 through the through hole 4. The receiving hole 5 is used to store the fixed component, so as to avoid the fixed component protruding and affecting the use of the sealing ring 1 and the connecting ring 2. When disassembly is required, a tool is inserted into the groove 14 to rotate the threaded cylinder 13 to disengage the threaded cylinder 13 from the screw 3. At this time, the sealing ring 1 or the connecting ring 2 is pulled upward to separate the two, thereby completing the disassembly of the floating ring leakage isolation component. There is no need to disassemble the entire component, which is convenient for maintenance and replacement during the operation of the centrifugal compressor.

[0022] Example 2 When the connecting ring 2 is slidably sleeved onto the outside of the screw 3 through the through hole 4, the positioning block 10 is inserted into the positioning hole 9. During this process, the deformation groove 12 on the outside of the positioning block 10 provides deformation space for the limiting spring 11, so that the limiting spring 11 can retract inward when the positioning block 10 is engaged in the positioning hole 9, and after being engaged, it can extend outward and press against the inner wall of the positioning hole 9 by relying on the restoring force. The engagement between the positioning block 10 and the positioning hole 9 can help share the force of the connecting mechanism and enhance the overall structural stability of the component.

[0023] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A centrifugal compressor floating ring leak-proof assembly, comprising a sealing ring (1), a spring (15), and a connecting ring (2), characterized in that, Both ends of the sealing ring (1) are provided with a connecting mechanism for installing the connecting ring (2). Each connecting mechanism includes a screw (3) and a fixing component. The screw (3) is located outside the sealing ring (1), and the fixing component is threadedly connected to the outside of the screw (3). Both ends of the connecting ring (2) are slidably connected to the outside of the two screws (3). The connecting ring (2) has through holes (4) at both ends. The connecting ring (2) is slidably connected to the outside of the screw (3) through the through holes (4). Each through hole (4) has a receiving hole (5) for placing the fixing component.

2. The centrifugal compressor floating ring leak-proof assembly as described in claim 1, characterized in that, The sealing ring (1) has mounting holes (6) at both ends; The screw (3) is slidably connected inside the mounting hole (6).

3. A centrifugal compressor floating ring leak-proof assembly as described in claim 1, characterized in that, Both ends of the sealing ring (1) are provided with limiting holes (7) for limiting the rotation of the screw (3); The end of the screw (3) away from the fixing component is engaged inside the limiting hole (7).

4. A centrifugal compressor floating ring leak-proof assembly as described in claim 1, characterized in that, Each of the screws (3) is movably fitted with a washer (8); Among them, the washer (8) is located inside the receiving hole (5).

5. A centrifugal compressor floating ring leak-proof assembly as described in claim 1, characterized in that, The sealing ring (1) has positioning holes (9) at both ends, and the connecting ring (2) has positioning blocks (10) fixedly installed at both ends. The positioning block (10) engages with the interior of the positioning hole (9).

6. A centrifugal compressor floating ring leak-proof assembly as described in claim 5, characterized in that, Each of the positioning blocks (10) is provided with a limiting spring (11) on its exterior to restrict the movement of the positioning block (10).

7. A centrifugal compressor floating ring leak-proof assembly as described in claim 5, characterized in that, Each of the positioning blocks (10) has a deformation groove (12) on its exterior. One end of the limiting spring (11) is fixedly connected to the inside of the deformation groove (12).

8. A centrifugal compressor floating ring leak-proof assembly as described in claim 1, characterized in that, Each of the aforementioned fixing components includes a threaded cylinder (13) and a groove (14); The threaded cylinder (13) is threaded to the outside of the screw (3), and the groove (14) is opened on the outside of the threaded cylinder (13) and is used to rotate the threaded cylinder (13).

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