Mounting and connecting structure type of large multi-shaft centrifugal compressor and foundation

Abstract

The utility model discloses a mounting and connecting structure type of a large-scale multi-shaft centrifugal compressor and a foundation, which solves the problem of simple and convenient mounting and connecting of the large-scale multi-shaft centrifugal compressor and the foundation, and plays a positive role in compact unit arrangement, foundation civil engineering and the like of the large-scale multi-shaft compressor.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-shaft compressors, in particular to an installation and connection structure type of a large multi-shaft centrifugal compressor and a foundation. Background Art

[0002] At present, there are mainly the following methods for the installation and connection of multi-axis centrifugal compressors and foundations in China: the multi-axis centrifugal compressor is connected to the base through bolts, and the base and foundation are then connected through anchor bolts. The multi-axis centrifugal compressor is directly connected to the foundation through anchor bolts.

[0003] For small and medium-sized multi-shaft centrifugal compressors, there is no problem with the installation and connection between the existing multi-shaft centrifugal compressors and the foundation. However, for large multi-shaft centrifugal compressors, there are certain problems: since the multi-shaft centrifugal compressor is relatively large overall and has an intermediate gas cooler, the pipeline is also relatively complex. If installation methods such as anchor bolts are used, it will greatly affect the layout of the entire multi-shaft centrifugal compressor unit, increase the width of the foundation platform, increase the height of the foundation platform, and sacrifice the compactness of the multi-shaft compressor unit layout. Utility Model Content

[0004] The purpose of the utility model is to address the technical defects existing in the prior art, and at the same time to achieve simple and convenient installation and connection between a large multi-shaft centrifugal compressor and a foundation, reduce the civil construction cost of the multi-shaft centrifugal compressor, and make the layout of the large multi-shaft centrifugal compressor more compact.

[0005] In order to achieve the purpose of this utility model, the technical solution adopted by this utility model is:

[0006] A large multi-shaft centrifugal compressor and foundation installation connection structure type includes a foundation concrete platform, a steel structure base is embedded in the foundation concrete platform, a mounting plate is connected to the steel structure base via a plurality of shim groups, a centrifugal compressor is mounted on the mounting plate, a plurality of jacks are symmetrically distributed on both sides of the transverse central axis of the mounting plate, a plurality of connecting screws are provided on both sides of the mounting plate, a positioning pin is provided on the mounting plate, and two limit blocks are provided on the mounting plate.

[0007] Compared with the prior art, the advantages of the present invention are:

[0008] This solution solves the problem of simple and convenient installation and connection between large multi-shaft centrifugal compressors and foundations, and has a positive effect on the compact unit layout and foundation civil engineering of large multi-shaft compressors. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the electric turning device;

[0010] Figure 2 This is a schematic diagram of the installation structure;

[0011] Figure 3 It is a side view of the installation structure;

[0012] Figure 4 Schematic diagram of the mounting plate structure;

[0013] Figure 5 for Figure 4 Enlarged view of the structure at location I. DETAILED DESCRIPTION

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0015] Example 1

[0016] A multi-shaft centrifugal compressor with an electric cranking device includes a first gear shaft 1, which is connected to a half coupling 2, and is respectively connected to a second gear shaft 3 and a third gear shaft 4 on both sides of the first gear shaft 1. The third gear shaft 4 is arranged in a gear box 8, and one end of the third gear shaft 4 is connected to a third impeller 7, and the other end of the third gear shaft 4 is connected to a driven ratchet 9, which is engaged with a driving ratchet 10, and the driving ratchet 10 is connected to an electric cranking device 11. A mounting plate 12 is provided at the bottom of the electric cranking device 11, and the mounting plate 12 is mounted on the gear box 8 by bolts.

[0017] The first impeller 5 and the second impeller 6 are axially connected to both ends of the second gear shaft 3 . A first volute 13 is provided outside the first impeller 5 , and a second volute 14 is provided outside the second impeller 6 .

[0018] A third volute 15 is provided outside the third impeller 7 .

[0019] Here’s how to use it:

[0020] by Figure 1 For example, to illustrate:

[0021] Figure 1It is a three-stage multi-shaft centrifugal compressor with a total of three gear shafts, namely the first gear shaft 1 (input shaft), the second gear shaft 3, and the third gear shaft 4. Among them, one end of the first gear shaft 1 is shrink-fitted with a half coupling 2, the two ends of the second gear shaft 3 are respectively connected to the first impeller 5 and the second impeller 6, the third gear shaft 4 is connected to the third impeller 7 at one end, and the other end is shrink-fitted with a driven ratchet 9. The active ratchet 10 on the electric winching device 11 can be manually engaged with the driven ratchet 9 through the handle of the electric winching device 11, and the winching motor of the electric winching device 11 is rotated to realize the winching of the multi-shaft centrifugal compressor by the electric winching device. When the multi-shaft compressor is started, when the speed of the third gear shaft 4 reaches the preset speed, the active ratchet 10 on the electric winching device 11 is automatically disengaged from the driven ratchet 9 on the third gear shaft 4 of the multi-shaft centrifugal compressor.

[0022] The mounting plate 12 of the electric winch device 11 is connected to the gear box body 8 of the multi-shaft centrifugal compressor by bolts.

[0023] Of course, the electric winch device 11 can also be set at other positions of the multi-shaft centrifugal compressor, such as a gear shaft of the multi-shaft centrifugal compressor (this gear shaft has one end without an impeller or a half coupling, depending on the actual situation).

[0024] Example 2

[0025] A type of installation connection structure for a large multi-axis centrifugal compressor and a foundation, including a foundation concrete platform 16, a steel structure base 17 pre-embedded in the foundation concrete platform 16, a mounting plate 19 connected to the steel structure base 17 through a plurality of shim groups 18, a centrifugal compressor 20 is mounted on the mounting plate 19, a plurality of jacks 21 are symmetrically distributed on both sides of the transverse center axis of the mounting plate 19, a plurality of connecting screws 22 are provided on both sides of the mounting plate 19, a positioning pin 23 is provided on the mounting plate 19, and two limit blocks 24 are provided on the mounting plate 19.

[0026] Here's how to use it:

[0027] The installation connection between the large multi-shaft compressor and the foundation is divided into two parts.

[0028] When making the compressor foundation, a steel structure base 17 is embedded in the concrete platform 16. The steel plate on the top of the embedded steel structure base 17 is a 100-120mm thick steel plate. When embedding, ensure that the top surface of the thick steel plate is 30-50mm higher than the foundation cement surface and meet certain level requirements.

[0029] During installation, the large multi-shaft centrifugal compressor is bolted to several mounting plates 19, which are welded to the top of the thick steel plate of the steel structure base 17 embedded in the concrete platform 16. Leveling nuts (jacks 21) and a set of inclined washers 18 are used between the mounting plates 19 and the embedded steel structure base 17 to adjust the level of the multi-shaft centrifugal compressor.

[0030] After the multi-axis centrifugal compressor is installed and adjusted (after the mounting plate 19 is welded to the steel structure base 17), the two limit blocks 24 are welded to the pre-buried steel structure base 17 at the corresponding positions of the multi-axis centrifugal compressor chassis. In combination with the positioning pins 19 located on the multi-axis centrifugal compressor and the mounting plate 19, the multi-axis centrifugal compressor is positioned.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A large multi-shaft centrifugal compressor and foundation mounting connection structure, comprising a foundation concrete platform (16), characterized in that: A steel structure base (17) is embedded in the foundation concrete platform (16), a mounting plate (19) is connected to the steel structure base (17) via a plurality of shim groups (18), a centrifugal compressor (20) is mounted on the mounting plate (19), a plurality of jacks (21) are symmetrically distributed on both sides of the transverse central axis of the mounting plate (19), a plurality of connecting screws (22) are provided on both sides of the mounting plate (19), a positioning pin (23) is provided on the mounting plate (19), and two limit blocks (24) are provided on the mounting plate (19).

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