A tooling for verifying the sealing performance of O-rings on the end caps of a horizontally split split compressor.

Abstract

This invention provides a tooling for verifying the sealing performance of O-rings on the end caps of a horizontally split centrifugal compressor, belonging to the field of centrifugal compressor technology. It includes an assembly of mounting components and a sealing component assembly. By setting sealing components on both sides of each inflation port, the inflation ports can be separated and their bottoms sealed, ensuring each inflation port is located in a separate first chamber. This makes the chambers of each inflation port independent of each other, i.e., forming independent chambers between the O-ring to be tested and the sealing component. When the flange is inflated and the inflation pressure cannot be maintained constant, it proves that the performance of two adjacent O-rings to be tested does not meet the requirements and cannot seal the chamber where the inflation port is located. The O-rings need to be replaced until the sealing performance at each location meets the requirements. That is, by observing the changes in the pressure test value, it can be verified whether each O-ring meets the usage requirements, thus ensuring the sealing performance of the centrifugal compressor and the safety of the dry gas seal.

Description

Technical Field

[0001] This invention belongs to the field of centrifugal compressor technology, specifically relating to a tooling for verifying the sealing performance of O-rings on the end caps of a horizontally split centrifugal compressor. Background Technology

[0002] Centrifugal compressors are widely used in various processes to transport air, process gases, or mixed gases and increase their pressure. One of the technological development trends is towards larger sizes. The original horizontally split centrifugal compressor structure can no longer fully meet the application requirements. In particular, the misalignment problem in the dry gas sealing area of ​​large centrifugal compressor casings caused by welding deformation and other stress deformation factors affects the disassembly and assembly of the dry gas seal and stable operation. To address these issues, an end-cap type horizontally split centrifugal compressor with a design that falls between horizontal and vertical splitting has been developed. In this structure, the end cap structure of the sealing area is machined as a single piece, effectively avoiding problems such as misalignment in the dry gas sealing area.

[0003] However, this end-cap type horizontal split-type split compressor structure relies on an O-ring on the outer circle of the end cap to achieve a seal between the casing and the end cap, such as... Figure 8 As shown. During actual assembly, the O-ring on the outer circumference of the end cover is often damaged by pressure at the split surface of the upper housing during installation. After the upper housing is installed, it is impossible to visually determine whether the O-ring is damaged, which affects the sealing performance of the centrifugal compressor and the safety of the dry gas seal. Summary of the Invention

[0004] To address the problem in existing technologies where damage to O-rings cannot be visually assessed after the upper casing is installed, affecting the centrifugal compressor's sealing performance and the safety of the dry gas seal, this invention provides a tooling for verifying the sealing performance of O-rings on the end cover of a horizontally split centrifugal compressor. By installing seals on both sides of the inflation port, each inflation port is located in a separate first chamber, meaning each chamber is independent. By sequentially inflating the inflation ports and observing the pressure changes on the testing device, it is possible to verify whether each O-ring meets the usage requirements, ensuring the centrifugal compressor's sealing performance and the safety of the dry gas seal. The specific technical solution is as follows:

[0005] A tooling for verifying the sealing performance of O-rings on the end cover of a horizontally split self-contained compressor includes: an assembly of mounting parts and an assembly of seals; the assembly of mounting parts is circumferentially disposed on the rotor shaft; the assembly of seals includes several seals, which are disposed circumferentially on the side wall of the assembly of mounting parts near the end cover, and the seals simultaneously fit against the end cover and the assembly of mounting parts to form a first chamber between two adjacent seals; the end cover is provided with several air inlets, each air inlet having a seal on both sides, the air inlets communicating with the first chamber, and each air inlet corresponding to a first chamber.

[0006] In addition, the horizontally splitting centrifugal compressor end cover O-ring sealing verification tooling provided by the present invention may also have the following additional technical features:

[0007] Optionally, the mounting assembly can be snapped into both the rotor shaft and the end cover.

[0008] Optionally, the mounting assembly includes: a guide portion and a positioning portion; the guide portion is fitted onto the outside of the rotor shaft and is connected to the rotor shaft; the positioning portion is fitted onto the outside of the guide portion and is connected to the end cover; wherein, the sealing assembly is simultaneously fitted to the positioning portion and the end cover.

[0009] Optionally, the mounting assembly may also include a limiting part; the limiting part is disposed on the positioning part and is embedded in the end cap.

[0010] Optionally, the horizontally split split compressor end cover O-ring sealing verification fixture includes: a locking element; after the locking element passes through the limiting part, the locking element is connected to the positioning part.

[0011] Optionally, the guide portion fits into the root of the rotor shaft end.

[0012] Optionally, the guide part and the positioning part are fitted with a small clearance.

[0013] Optionally, the surface hardness of the guide section is less than the surface hardness of the rotor shaft.

[0014] Optionally, the tooling for verifying the O-ring sealing performance of the horizontally split split compressor end cover includes: an inflation device; the inflation device is connected to the inflation port.

[0015] Optionally, the tooling for verifying the sealing performance of the O-ring on the end cover of the horizontally split split compressor includes: a pressure detection device; the pressure detection device is installed on the inflation device and is connected to the inflation port.

[0016] The present invention provides a tooling for verifying the sealing performance of O-rings on the end caps of a horizontally split split compressor. Compared with the prior art, the advantages of this tooling are as follows:

[0017] This fixture is specifically designed for inspecting O-rings on the end covers of horizontally split split compressors. The thickness of the mounting assembly matches the distance between the rotor shaft and the end cover, ensuring the end cover's installation position remains unchanged. After verifying the O-ring's sealing performance, disassembling the verification tool eliminates the need for repeated end cover disassembly and reassembly, making it convenient and efficient. By installing seals on both sides of each inflation port, the ports are separated and their bottoms are sealed, placing each port in a separate first chamber. This ensures that each inflation port's chamber is independent, meaning the O-ring under test and the seal form independent chambers. When the flange is inflated and the inflation pressure cannot be maintained constant, it indicates that the performance of two adjacent O-rings under test is unsatisfactory, failing to seal the chamber containing the inflation port. The O-rings must be replaced until all positions meet the sealing requirements. By observing the pressure test device's value changes, it is possible to verify whether each O-ring meets the usage requirements, ensuring the sealing performance and dry gas seal safety of the horizontally split split compressor. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a horizontally split split compressor end cover O-ring sealing performance verification tool according to an embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional view of the guide portion of a horizontally sectionalized O-ring sealing verification fixture for a split compressor end cover according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the guide portion of a horizontally split split compressor end cover O-ring sealing verification tool according to an embodiment of the present invention;

[0021] Figure 4 This is a cross-sectional view of the positioning part of a horizontally sectionalized O-ring sealing verification fixture for a split compressor end cover according to an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the positioning part of a horizontally split split compressor end cover O-ring sealing verification tool according to an embodiment of the present invention;

[0023] Figure 6 This is a cross-sectional view of the limiting part of a horizontally sectionalized O-ring sealing verification fixture for a split compressor end cover according to an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the limiting part of a horizontally split-type compressor end cover O-ring sealing verification tooling according to an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the structure of a centrifugal compressor;

[0026] in, Figures 1 to 8 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0027] 10. Mounting assembly; 101. Guide section; 102. Positioning section; 103. Limiting section; 11. Seal; 12. Locking section; 13. Inflation device; 14. Pressure detection device; 15. End cover; 16. Machine cover; 17. O-ring to be verified; 18. Inflation port; 19. Rotor shaft; 20. First chamber. Detailed Implementation

[0028] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0032] See also Figures 1-7As shown in the embodiment of this application, a tooling for verifying the sealing performance of O-rings on the end cover of a horizontally split self-contained compressor includes: a mounting assembly 10 and a sealing assembly; the mounting assembly 10 is circumferentially disposed on the rotor shaft 19; the sealing assembly includes a plurality of sealing elements 11, which are disposed circumferentially on the side wall of the mounting assembly 10 near the end cover 15, and the sealing elements 11 simultaneously fit against both the end cover 15 and the mounting assembly 10, so that a first chamber 20 is formed between two adjacent sealing elements 11; the end cover 15 is provided with a plurality of air inlets 18, each air inlet 18 having a sealing element 11 on both sides, the air inlets 18 communicating with the first chamber 20, and the air inlets 18 corresponding one-to-one with the first chamber 20. This tooling is specifically used for testing the O-rings on the end cover 15 of a horizontally split self-contained compressor. The thickness of the mounting assembly 10 is consistent with the distance between the rotor shaft 19 and the end cover 15, ensuring that the installation position of the end cover 15 does not change. After verifying the sealing performance of the O-ring, the verification tool can be disassembled without repeatedly disassembling and reassembling the end cover 15, making it convenient and efficient. By setting sealing elements 11 on both sides of the air inlet 18 of the end cover 15, the air inlets 18 of the end cover 15 can be separated and sealed, so that each air inlet 18 is located in a separate first chamber 20, making the chambers where each air inlet 18 is located independent of each other. That is, the O-ring to be tested and the sealing element 11 form independent chambers. When the flange is filled with air and the filling pressure cannot be kept constant, it proves that the performance of the two adjacent O-rings to be tested 17 does not meet the requirements and cannot seal the chamber where the air inlet 18 is located. The product O-rings need to be replaced until the sealing performance of each position meets the requirements, so as to ensure the sealing performance of the centrifugal compressor and the safety of the dry gas seal. Furthermore, the inner wall of the mounting assembly 10 fits against the side wall of the rotor shaft 19, increasing the contact area between the rotor assembly and the rotor shaft 19 and ensuring the stability of the mounting assembly 10 after installation. The outer wall of the mounting assembly 10 fits against the inner wall of the end cover 15, and the sealing performance is improved by setting a sealing assembly, ensuring that each inflation port 18 is in an independent sealed space.

[0033] Furthermore, the bottom of the seal 11 is embedded in the mounting assembly 10, meaning that all three sides of the mounting component are in contact with the mounting assembly 10, making it less prone to leakage and providing a good sealing effect.

[0034] As one embodiment, the mounting assembly 10 is simultaneously engaged with both the rotor shaft 19 and the end cover 15. By engaging the mounting assembly with the rotor shaft 19 and the end cover 15, the relative positions of the mounting assembly with the rotor shaft 19 and the end cover 15 are fixed, ensuring the stability of the mounting assembly 10 and preventing displacement of the mounting assembly 10, which would cause changes in the relative position of the sealed space and the inflation port 18, thus ensuring the accuracy of the verification results.

[0035] In another embodiment, the guide portion 101 is fitted onto the outside of the rotor shaft 19 and is connected to the rotor shaft 19; the positioning portion 102 is fitted onto the outside of the guide portion 101 and is connected to the end cover 15; wherein, the sealing assembly is simultaneously fitted to both the positioning portion 102 and the end cover 15. By installing the guide portion 101 on the outside of the rotor shaft 19, the installation of the positioning portion 102 is guided; by connecting the positioning portion 102 to the end cover 15, it is ensured that even if the position of the guide portion 101 changes, the relative positions of the positioning portion 102 and the sealing member 11 with the air inlet 18 will not change, ensuring the stability of the sealing member 11 and further improving the accuracy of the verification results.

[0036] Furthermore, a receiving groove is provided on the outer wall of the positioning part 102, and at least part of the sealing element 11 is embedded in the receiving groove to position and fix the sealing element 11, prevent the sealing element 11 from shifting, ensure the tightness of the sealing element 11 and the end cover 15, and ensure that the verification result is only affected by the O-ring sealing performance, so as to ensure the accuracy of the verification result.

[0037] A limiting part 103 is provided on the positioning part 102 and is embedded in the end cover 15. By providing the limiting part 103 on the positioning part 102 and embedding the limiting part 103 into the existing slot of the end cover 15, the positioning part 102 is engaged and limited, resulting in a reliable structure.

[0038] Furthermore, the limiting part 103 is an arc-shaped sheet structure, and the limiting part 103 is adapted to the shape of the slot of the end cover 15, so as to ensure that the limiting part 103 has a larger contact area with the slot after being embedded in the slot, and the gap is minimized, thus ensuring the stability of the limiting part 103 after installation and preventing it from shaking, thereby ensuring the stability of the positioning part 102 after it is fixed and improving the accuracy of the verification results.

[0039] After the locking member 12 passes through the limiting part 103, the locking member 12 connects with the positioning part 102. By connecting the positioning part 102 and the limiting part 103 with the locking member 12, the limiting part 103 is pressed tightly onto the positioning part 102, preventing gaps between the positioning part 102 and the limiting part 103, ensuring the connection strength between the positioning part 102 and the limiting part 103, and ensuring the stability of the positioning part 102.

[0040] Furthermore, the locking member 12 is threadedly connected to the positioning part 102 to prevent the connection between the locking member 12 and the positioning part 102 from becoming loose, ensuring the connection strength between the positioning part 102 and the locking member 12, and making the structure reliable.

[0041] Specifically, the locking element 12 is a bolt, and the positioning part 102 is provided with a threaded hole. After the bolt passes through the limiting part 103, the bolt is connected to the threaded hole.

[0042] The guide portion 101 is fitted against the root of the rotor shaft 19. By fitting the guide portion 101 against the root of the rotor shaft 19, displacement of the guide portion 101 is prevented by the shaft end against the guide portion 101, while ensuring the accuracy of the installation position of the guide portion 101, improving the accuracy of the installation position of the positioning portion 102, ensuring that every two adjacent seals 11 are located on both sides of the inflation port 18, and ensuring the sealing between the verification tool and the end cap 15.

[0043] Specifically, depending on the structure of the rotor shaft 19, the guide part 101 can also be made to fit against the shoulder of the rotor shaft 19, which can also achieve the effect of limiting the guide part 101.

[0044] The guide part 101 and the positioning part 102 are fitted with a small clearance. By making the guide part 101 and the positioning part 102 fit with a small clearance, when selecting the clearance fit level, a higher precision level is recommended, so that after the guide part 101 and the positioning part 102 are installed, they are approximately a single structure, reducing the relative displacement between the guide part 101 and the mounting part.

[0045] The surface hardness of the guide portion 101 is less than the surface hardness of the rotor shaft 19. By making the surface hardness of the guide portion 101 lower than the surface hardness of the rotor shaft 19, the outer cylindrical surface of the rotor shaft 19 can be effectively protected, and the wear of the rotor shaft 19 can be reduced.

[0046] In another embodiment, the inflation device 13 is connected to the inflation port 18. By connecting the inflation device 13 to the outside of the inflation port 18, each inflation port 18 is inflated to test the sealing performance of the O-rings.

[0047] The pressure detection device 14 is installed on the inflation device 13 and is connected to the inflation port 18. By installing the pressure detection device 14 on the inflation device 13, the pressure in the chamber is detected through the inflation port 18 and the pressure value is displayed, which is more intuitive and accurate.

[0048] Specifically, the pressure detection device 14 is a pressure gauge. When the pressure gauge pointer rotates, the pressure gauge reading can be seen visually from a distance to see if it has changed, which is convenient for remote control.

[0049] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0050] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A tooling for verifying the sealing performance of O-rings on the end caps of a horizontally split self-contained compressor, characterized in that, The horizontally split-type centrifugal compressor end cover O-ring sealing verification fixture includes: Mounting assembly (10), which is arranged circumferentially on rotor shaft (19); A sealing assembly comprising a plurality of sealing elements (11) arranged circumferentially on the side wall of the mounting assembly (10) near the end cap (15) along the end cap (15), wherein the sealing elements (11) are simultaneously fitted to the end cap (15) and the mounting assembly (10) to form a first chamber (20) between two adjacent sealing elements (11); The end cap (15) is provided with a plurality of air inlets (18), and each air inlet (18) is provided with a sealing element (11) on both sides. The air inlet (18) is connected to the first chamber (20), and the air inlet (18) corresponds one-to-one with the first chamber (20). The mounting assembly (10) engages simultaneously with the rotor shaft (19) and the end cap (15).

2. The tooling for verifying the sealing performance of the O-ring on the end cover of a horizontally split-type compressor according to claim 1, characterized in that, The mounting assembly (10) includes: A guide portion (101) is fitted onto the outside of the rotor shaft (19) and is connected to the rotor shaft (19); Positioning part (102), which is fitted on the outside of the guide part (101) and is connected to the end cap (15); The sealing assembly is simultaneously fitted with the positioning part (102) and the end cap (15).

3. The tooling for verifying the sealing performance of the O-ring on the end cover of a horizontally split-type compressor according to claim 2, characterized in that, The mounting assembly (10) also includes: A limiting part (103) is disposed on the positioning part (102) and the limiting part (103) is embedded in the end cap (15).

4. The tooling for verifying the sealing performance of the O-ring on the end cover of a horizontally split-type compressor according to claim 3, characterized in that, The horizontally split-type centrifugal compressor end cover O-ring sealing verification fixture includes: The locking member (12) passes through the limiting part (103) and is connected to the positioning part (102).

5. The tooling for verifying the sealing performance of the O-ring on the end cover of a horizontally split-type compressor according to claim 2, characterized in that: The guide portion (101) is in contact with the root of the rotor shaft (19).

6. The tooling for verifying the sealing performance of the O-ring on the end cover of a horizontally split-type compressor according to claim 2, characterized in that: The guide part (101) and the positioning part (102) are fitted with a small clearance.

7. The tooling for verifying the sealing performance of the O-ring on the end cover of a horizontally split-type compressor according to claim 2, characterized in that: The surface hardness of the guide portion (101) is less than the surface hardness of the rotor shaft (19).

8. The tooling for verifying the sealing performance of the O-ring on the end cover of a horizontally split-type compressor according to claim 1, characterized in that, The horizontally split-type centrifugal compressor end cover O-ring sealing verification fixture includes: An inflation device (13) is connected to the inflation port (18).

9. The tooling for verifying the sealing performance of the O-ring on the end cover of a horizontally split-type compressor according to claim 8, characterized in that, The horizontally split-type centrifugal compressor end cover O-ring sealing verification fixture includes: A pressure detection device (14) is installed on the inflation device (13) and is connected to the inflation port (18).

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