High-wear-resistant natural gas compressor rotor shaft displacement measuring disc

Abstract

The utility model discloses a kind of high wear resistance natural gas compressor rotor shaft displacement measuring disc, including sequentially coaxial connection's connecting rod, connecting flange and hexagonal part;The outer thread is formed in the end of connecting rod far from hexagonal part outside;Connecting rod and the connecting flange connection are root, and root is arc transition;The connecting flange forms multiple thread holes along the circumference uniform distribution;Position close to hexagonal part forms positioning pin hole.The utility model measuring disc adopts and separates from main shaft design, significantly reduce processing difficulty;Measuring disc has the effect of locking thrust disc, and can implement repeated dismounting operation, realize the problem of reducing maintenance cost and maintenance difficulty;Measuring disc can satisfy the requirement of separate tempering hardness.

Description

Technical Field

[0001] This utility model belongs to the field of compressor testing technology, specifically relating to a high wear-resistant natural gas compressor rotor shaft displacement measuring disc. Background Technology

[0002] As a core component of the rotor assembly in natural gas compressor products, the rotor shaft displacement measuring disc is crucial for real-time monitoring of the rotor's axial displacement and key phase during overall unit operation. Its manufacturing precision directly impacts the accuracy of real-time monitoring. Furthermore, the shaft displacement measuring disc must also function to lock the thrust disc. Currently, the rotor shaft displacement measuring discs in large compressor products only provide real-time monitoring of the rotor's axial displacement during overall unit operation, offering a limited functionality.

[0003] The existing rotor shaft displacement measuring disc is machined as an integral part of the rotor shaft. Because the measuring disc is integrated with the main rotor shaft, it has a large mass and length, and the machining process is complex. It requires large machining equipment to complete the machining of the measuring disc. Once the measuring disc has a machining error, it will cause the entire rotor shaft to be scrapped. Conventional integrated measuring discs do not secure the thrust disc and do not allow for separate disassembly. If the thrust disc needs repair due to wear caused by a malfunction, it cannot be disassembled and repaired, resulting in high maintenance difficulty and cost.

[0004] Conventional integrated measuring discs cannot undergo separate tempering and hardening, resulting in low hardness and lack of wear resistance. Utility Model Content

[0005] This utility model is proposed to solve the problems existing in the prior art, and its purpose is to provide a high wear-resistant natural gas compressor rotor shaft displacement measuring plate.

[0006] This utility model is achieved through the following technical solution: A high wear-resistant natural gas compressor rotor shaft displacement measuring disc includes a connecting rod, a connecting flange, and a hexagonal part connected coaxially in sequence; an external thread is formed on the outer side of the connecting rod away from the hexagonal part; the connection between the connecting rod and the connecting flange is the root, and the root has a rounded transition; the connecting flange forms a plurality of threaded holes evenly distributed along the circumference; a locating pin hole is formed near the hexagonal part.

[0007] In the above technical solution, the external thread is threadedly connected to the spindle center hole; In the above technical solution, an annular groove is formed in the middle of the connecting rod.

[0008] In the above technical solution, a gap is formed between the bottom of the annular groove and the wall of the central hole of the thrust disk, and the length of the annular groove is less than the length of the central hole of the thrust disk.

[0009] In the above technical solution, a circular groove is formed on one end face of the connecting flange near the hexagonal part, and the threaded hole and the locating pin hole are both formed at the bottom of the circular groove.

[0010] In the above technical solution, a countersunk hole is formed at the center of the end face of the hexagonal part away from the connecting rod.

[0011] The beneficial effects of this utility model are: This utility model provides a rotor shaft displacement measuring disc for a natural gas compressor. The measuring disc adopts a separate design from the main shaft, significantly reducing the difficulty of processing. The measuring disc has advantages such as light weight, small size, simple processing operation, no need for large machining equipment, and the ability to repeat the processing steps if processing errors occur. Even if processing is scrapped, it will not affect the scrap loss of the entire shaft. The measuring disc has the function of locking the thrust disc and can be repeatedly disassembled and assembled. For example, if the thrust disc of the shaft wears due to failure, the thrust disc can be disassembled, repaired, or replaced by removing the measuring disc, thereby reducing maintenance costs and difficulty. The measuring disc can meet the requirements of individual tempering hardness and can meet the corrosion resistance requirements of the unit. The hardness of the material after tempering is between 280 and 320 HB, which is higher than that of conventional measuring discs, and the wear resistance is more than twice as good. Attached Figure Description

[0012] Figure 1 This is a top view of the rotor shaft displacement measuring disk processed by the method of this utility model; Figure 2 This is a half-sectional view of the rotor shaft displacement measuring disk processed by the method of this utility model; Figure 3 This is an assembly drawing of the rotor shaft displacement measuring disk processed by the method of this utility model on the rotor assembly.

[0013] in: 1. Connecting rod; 11. External thread; 12. Annular groove; 13. Root; 2. Connecting flange; 21. Key phase measurement hole; 22. Threaded hole; 23. Locating pin hole; 24. Circular groove; 3. Hexagonal section; 31. Countersunk hole; 4. Thrust plate; 5. Spindle.

[0014] For those skilled in the art, other related figures can be obtained from the above figures without any creative effort. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0016] Example 1 like Figure 1 , 2 As shown, a high wear-resistant natural gas compressor rotor shaft displacement measuring disk includes a connecting rod 1, a connecting flange 2, and a hexagonal part 3 connected coaxially in sequence; The connecting rod 1 has an external thread 11 formed on the outer side of the end away from the hexagonal part 3, and the external thread 11 is threaded to the center hole of the main shaft 5. The connecting rod 1 forms an annular groove 12 in the middle. A gap is formed between the bottom of the annular groove 12 and the wall of the center hole of the thrust plate 4. The length of the annular groove 12 is less than the length of the center hole of the thrust plate 4. The gap between the bottom of the annular groove 12 and the wall of the center hole of the thrust plate 4 is used to reduce the installation contact area and reduce the difficulty of disassembly. The connection between the connecting rod 1 and the connecting flange 2 is at the root 13, and the root 13 has a rounded transition. A circular groove 24 is formed on one end face of the connecting flange 2 near the hexagonal part 3. A plurality of threaded holes 22 are formed at the bottom of the circular groove 24 along the edge of the circular groove. The threaded holes 22 are used to adjust the dynamic balance of the rotor and install the dynamic balance counterweight. A positioning pin hole 23 is formed at the bottom of the circular groove 24 near the hexagonal part 3. The positioning pin hole 23 is used to connect the rotor shaft displacement measuring disk and the thrust disk 4. A key phase measurement hole 21 is formed at the bottom of the circular groove 24 near the circle where the threaded hole 22 is located. The key phase measurement hole 21 is used to measure the rotor speed with a measuring instrument. A countersunk hole 31 is formed at the center of the end face of the hexagonal part 3 away from the connecting rod 1. The countersunk hole 31 is used for center positioning and clamping of the rotor shaft during rotor machining or dynamic balancing.

[0017] Assembly and usage method of this utility model: After cleaning the mounting areas of the thrust plate and the shaft, align the positioning holes of the thrust plate with the positioning holes of the shaft and push it in for positioning and installation. After aligning the positioning holes at the other end of the measuring disc and the thrust disc shaft, use the connecting rod to pass through the center hole of the thrust disc and tighten it with the thread of the center hole of the rotating shaft.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0020] The applicant declares that the above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model fall within the protection and disclosure scope of the present utility model.

Claims

1. A high-wear-resistant natural gas compressor rotor shaft displacement measuring disc, characterized in that: It includes a connecting rod (1), a connecting flange (2) and a hexagonal part (3) connected coaxially in sequence; the connecting rod (1) has an external thread (11) on the outside of the end away from the hexagonal part (3); the connection between the connecting rod (1) and the connecting flange (2) is the root (13), and the root (13) is a rounded transition; the connecting flange (2) has a plurality of threaded holes (22) evenly distributed along the circumference; a locating pin hole (23) is formed near the hexagonal part (3).

2. The high-wear-resistant natural gas compressor rotor shaft displacement measuring disc of claim 1, wherein: The external thread (11) is threadedly connected to the center hole of the spindle (5).

3. The high-wear-resistant natural gas compressor rotor shaft displacement measuring disc of claim 1, wherein: An annular groove (12) is formed in the middle of the connecting rod (1).

4. The high-wear-resistant natural gas compressor rotor shaft displacement measuring disc of claim 3, wherein: The bottom of the annular groove (12) forms a gap with the wall of the central hole of the thrust plate (4), and the length of the annular groove (12) is less than the length of the central hole of the thrust plate (4).

5. The high-wear-resistant natural gas compressor rotor shaft displacement measuring disc of claim 1, wherein: The connecting flange (2) has a circular groove (24) formed on one end face near the hexagonal part (3), and the threaded hole (22) and the locating pin hole (23) are both formed at the bottom of the circular groove (24).

6. The high-wear-resistant natural gas compressor rotor shaft displacement measuring disc of claim 1, wherein: A countersunk hole (31) is formed at the center of the end face of the hexagonal part (3) away from the connecting rod (1).

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