Centrifugal compressor detection device

Abstract

The centrifugal compressor detection device provided by the application belongs to the technical field of compressors and comprises a centrifugal compressor and a driving assembly. The centrifugal compressor comprises a base, and a motor and a gear box are arranged on the base. The driving assembly comprises a support seat, a bearing seat is arranged on the support seat, a driving shaft is provided with a driving gear and is rotatably arranged on the bearing seat, the driving gear is engaged with a driven gear, and the rotating speed of the driving gear is greater than the rotating speed of the driven gear. The driven gear is connected with a shaft coupling to drive the shaft coupling to rotate, and the two ends of the shaft coupling are connected with a motor rotating shaft and a gear box rotating shaft of the centrifugal compressor. The scheme of the application is convenient for detecting the radial deviation and axial deviation of the shaft coupling of the centrifugal compressor and improves the detection efficiency and detection accuracy.

Description

Technical Field

[0001] This application belongs to the field of compressor technology, and more specifically, relates to a centrifugal compressor detection device. Background Technology

[0002] During the operation of a centrifugal compressor, the input shaft of the motor and the shaft of the transmission gearbox are connected by a coupling. When assembling the coupling, it is essential to ensure the coaxiality of the two shafts. Coaxiality errors will cause additional loads on the coupling, drive shaft, and their bearings, which in severe cases can lead to machine vibration, bearing wear, and even coupling failure. Regular inspections of the motor and coupling are necessary to eliminate coaxiality errors caused during operation or prolonged shutdowns, thereby ensuring the normal operation of the centrifugal compressor and extending its service life.

[0003] In existing technology, the procedure for checking the coaxiality of the motor input shaft and gearbox shaft is as follows: The coupling is slowly rotated, and the radial and axial deviations of the coupling are measured using a dial indicator during rotation to determine the coaxiality error between the two shafts. The motor's foundation bolts are then adjusted. After adjustment, the axial and radial deviations are measured again to ensure the coaxiality error is within the allowable range. As motor power increases, it becomes increasingly difficult for operators to manually rotate the coupling directly, increasing the operational complexity. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides a centrifugal compressor testing device, including a centrifugal compressor and a drive assembly. The centrifugal compressor includes a base, on which a motor and a gearbox are mounted.

[0005] The drive assembly includes a support base, which is fixedly mounted on the base of the centrifugal compressor. A bearing seat is provided on the support base. A drive shaft is provided with a drive gear and is rotatably mounted on the bearing seat. The drive gear meshes with a driven gear, and the rotational speed of the drive gear is greater than that of the driven gear.

[0006] The driven gear is connected to the coupling to drive the coupling to rotate. The two ends of the coupling are respectively connected to the rotating shaft of the centrifugal compressor motor and the rotating shaft of the gearbox.

[0007] Furthermore, the support base is fixedly mounted on the base of the centrifugal compressor and located between the motor and the gearbox.

[0008] Furthermore, the driven gear has an inner bore, and the coupling extends at least partially into the inner bore.

[0009] Furthermore, the coupling is interference-fitted into the inner bore.

[0010] Furthermore, the driven gear includes a first gear ring and a second gear ring fixedly connected together, and the first gear ring and the second gear ring mesh to form an inner hole.

[0011] Furthermore, the first toothed ring and the second toothed ring are connected at both ends by fastening screws.

[0012] Furthermore, both the first toothed ring and the second toothed ring include teeth and connecting portions on both sides. One end of the connecting portion of one toothed ring is provided with a through hole, and a fastening screw passes through the through hole and is threadedly connected to the connecting portion of the other toothed ring.

[0013] Furthermore, there are two bearing housings, and the two ends of the drive shaft are rotatably mounted on the two bearing housings via bearings.

[0014] The technical solution provided in this application has the following advantages compared with the prior art:

[0015] The centrifugal compressor testing device includes a centrifugal compressor and a drive assembly. The drive assembly is fixedly mounted on the base of the centrifugal compressor and located between the motor and the gearbox. The driving gear meshes with the driven gear, and the driven gear is adapted to connect to a coupling to drive the coupling to rotate. The two ends of the coupling are adapted to connect to the motor shaft and the gearbox shaft of the centrifugal compressor, respectively. The speed of the driving gear is greater than that of the driven gear, realizing speed reduction and torque increase, which facilitates the detection of radial and axial deviations of the centrifugal compressor coupling, improving detection efficiency and accuracy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the centrifugal compressor testing device of this application;

[0018] Figure 2 This is a first-view structural schematic diagram of the drive assembly of the centrifugal compressor detection device of this application;

[0019] Figure 3 This is a second-view structural schematic diagram of the drive assembly of the centrifugal compressor detection device of this application.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1-Support base, 2-Bearing housing, 3-Drive shaft, 4-Drive gear, 5-Driven gear, 5.1-Gear, 5.2-Connecting part, 6-Coupling, 7-Motor, 8-Gearbox, 9-Fasting screw. Detailed Implementation

[0022] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0026] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0027] Please refer to Figures 1-3The centrifugal compressor testing device includes a centrifugal compressor and a drive assembly. The centrifugal compressor includes a base, on which a motor 7 and a gearbox 8 are mounted. The drive assembly is fixedly mounted on the base of the centrifugal compressor and located between the motor 7 and the gearbox 8. The drive assembly includes a support base 1, on which a bearing seat 2 is mounted. A drive gear 4 is mounted on a drive shaft 3 and rotatably mounted on the bearing seat 2. The drive gear 4 meshes with a driven gear 5, and the speed of the drive gear 4 is greater than that of the driven gear 5, achieving speed reduction and torque increase, making operation easier. For example, the transmission ratio of the drive gear 4 to the driven gear 5 is 1:4. The driven gear 5 is connected to a coupling 6 to drive the coupling to rotate. The two ends of the coupling 6 are respectively connected to the rotating shaft of the motor 7 of the centrifugal compressor and the rotating shaft of the gearbox 8.

[0028] Furthermore, the support base 1 is fixedly mounted on the base of the centrifugal compressor and located between the motor 7 and the gearbox 8. The driven gear 5 has an inner bore, and the coupling 6 at least partially extends into the inner bore, with the coupling 6 being interference-fitted into the inner bore. Preferably, the driven gear 5 includes a first gear ring and a second gear ring fixedly connected together, the first gear ring and the second gear ring mating to form the inner bore. The two ends of the first gear ring and the second gear ring can be connected by fastening screws 9. The driven gear 5 is mounted on the outer circumferential surface of the coupling 6, and after being fastened by the fastening screws 9 on both sides of the driven gear 5, friction is generated, thereby transmitting torque. The driven gear 5 is configured as a split structure, allowing the driven gear 5 to be connected to the coupling 6 after the motor shaft and gearbox shaft are connected, without affecting the assembly of the centrifugal compressor.

[0029] Furthermore, both the first toothed ring and the second toothed ring include a toothed portion 5.1 and a connecting portion 5.2 disposed on both sides. One end of the connecting portion 5.2 of one toothed ring is provided with a through hole, and a fastening screw 9 passes through the through hole and is threadedly connected to the connecting portion 5.2 of the other toothed ring.

[0030] Furthermore, there are two bearing seats 2, and the two ends of the drive shaft 3 are rotatably mounted on the two bearing seats 2 via bearings.

[0031] The drive shaft 3 can be driven by a device such as an electric wrench. The drive gear 4 and the driven gear 5 mesh with each other and transmit torque. The speed of the drive gear 4 is greater than that of the driven gear 5. The driven gear 5 drives the coupling 6 to rotate.

[0032] Centrifugal compressor testing device operation method:

[0033] The drive assembly is fixed on the centrifugal compressor base and located between the motor 7 and the gearbox 8;

[0034] The coupling 6 extends into the inner hole of the driven gear 5 and fastens the first gear ring and the second gear ring, so that it is fixedly connected to the coupling 6.

[0035] The driving gear 4 drives the driven gear 5 to rotate, which in turn drives the coupling 6 to rotate. The radial and axial deviations of the coupling 6 are measured using dial indicators, micrometers, and other devices.

[0036] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A centrifugal compressor testing device, characterized in that, It includes a centrifugal compressor and a drive assembly, the centrifugal compressor including a base on which a motor (7) and a gearbox (8) are mounted; The drive assembly includes a support base (1), which is fixedly mounted on the base of the centrifugal compressor. A bearing seat (2) is provided on the support base (1). The drive shaft (3) is provided with a drive gear (4) and is rotatably mounted on the bearing seat (2). The drive gear (4) meshes with a driven gear (5), and the rotational speed of the drive gear (4) is greater than that of the driven gear (5). The driven gear (5) is connected to the coupling (6) to drive the coupling to rotate. The two ends of the coupling (6) are respectively connected to the shaft of the centrifugal compressor motor (7) and the shaft of the gearbox (8).

2. The centrifugal compressor testing device according to claim 1, characterized in that, The support base (1) is fixedly mounted on the base of the centrifugal compressor and located between the motor (7) and the gearbox (8).

3. The centrifugal compressor testing device according to claim 1, characterized in that, The driven gear (5) has an inner hole, and the coupling extends at least partially into the inner hole.

4. The centrifugal compressor testing device according to claim 3, characterized in that, The coupling (6) is interference-fitted into the inner hole.

5. The centrifugal compressor testing device according to claim 3, characterized in that, The driven gear (5) includes a first gear ring and a second gear ring fixedly connected together, and the first gear ring and the second gear ring mesh to form an inner hole.

6. The centrifugal compressor testing device according to claim 5, characterized in that, The first toothed ring and the second toothed ring are connected at both ends by fastening screws (9).

7. The centrifugal compressor testing device according to claim 5, characterized in that, Both the first toothed ring and the second toothed ring include a toothed portion (5.1) and a connecting portion (5.2) provided on both sides. One end of the connecting portion (5.2) of one toothed ring is provided with a through hole, and a fastening screw (9) passes through the through hole and is threadedly connected to the connecting portion (5.2) of the other toothed ring.

8. The centrifugal compressor testing device according to claim 1, characterized in that, There are two bearing seats (2), and the two ends of the drive shaft (3) are rotatably mounted on the two bearing seats (2) through bearings.

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