Efficient sealing structure of gas pressurizing machine

Abstract

The utility model discloses an efficient sealing structure of a coal gas pressurizing machine, which relates to the field of efficient sealing structures and comprises two sealing bearings, connecting pipes are welded on the outer surfaces of the two sealing bearings, sealing pipes are welded on the opposite sides of inner shafts of the two sealing bearings, and working media are arranged between the connecting pipes and the sealing pipes. A sealing ring is welded to the end of the connecting pipe, a honeycomb ring is installed between the sealing ring and the sealing bearing at the nearest position, and the honeycomb ring is fixed to the inner side of the connecting pipe. According to the efficient sealing structure of the gas pressurizing machine, the sealing bearing, the sealing pipe and the connecting pipe are arranged, when the impeller shaft rotates, the inner shaft of the sealing bearing and the sealing pipe can be driven to rotate, at the moment, air can enter the sealing bearing, but a working medium can prevent the air from entering the sealing bearing, and therefore the sealing effect is improved. And the sealing bearing can prevent the working medium from flowing out, so that better sealing performance can be ensured.

Description

Technical Field

[0001] The utility model relates to the field of high-efficiency sealing structures, in particular to a high-efficiency sealing structure for a gas compressor. Background Art

[0002] The centrifugal gas compressor generates centrifugal force through the impeller of the centrifuge, causing the gas to flow in the tangential direction, increasing the flow speed of the gas and thus increasing its kinetic energy. After a part of the gas flows through the blades, it is continuously replenished, and the accelerated gas continuously flows through the blades. After the gas enters the main pipe, it is subjected to net pressure, which increases the pressure of the gas discharged from the main pipe. The centrifugal gas compressor is divided into two types: single-stage impeller and multi-stage impeller. Regardless of whether it is a single-stage or multi-stage impeller compressor, the sealing device is one of its indispensable structures.

[0003] The sealing structure of the traditional gas compressor includes two types: labyrinth seal and honeycomb seal. Although the traditional sealing method has a certain sealing performance, a large amount of heat is generated during the friction process, which in turn leads to a large friction force, which will have a great impact on the impeller shaft. At the same time, the single sealing performance is relatively poor. Utility Model Content

[0004] The main purpose of the utility model is to provide a high-efficiency sealing structure for a gas compressor, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a high-efficiency sealing structure of a gas compressor, comprising two sealing bearings, the outer surfaces of the two sealing bearings are welded with connecting pipes, the opposite sides of the inner shafts of the two sealing bearings are welded with sealing pipes, and a working fluid is arranged between the connecting pipes and the sealing pipes.

[0006] A sealing ring is welded to the end of the connecting pipe, a honeycomb ring is installed between the sealing ring and the sealing bearing at the nearest position, and the honeycomb ring is fixed on the inner side of the connecting pipe.

[0007] The working medium is water or lubricating oil.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] 1. In the utility model, by providing a sealed bearing, a sealed tube and a connecting tube, when the impeller shaft rotates, the inner shaft of the sealed bearing and the sealed tube will be driven to rotate. At this time, air may enter the interior of the sealed bearing, but the working fluid can prevent the entry of air, and the sealed bearing can prevent the outflow of the working fluid, so that better sealing can be guaranteed.

[0010] 2. In the present invention, by providing a honeycomb ring, when the impeller shaft rotates, a vortex is generated at the position of the honeycomb ring to achieve sealing, thereby further improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency sealing structure for a gas compressor according to the utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the honeycomb ring position of a high-efficiency sealing structure for a gas compressor of the utility model;

[0013] Figure 3 This is a schematic diagram of the split structure of a sealing bearing and a connecting pipe of a high-efficiency sealing structure of a gas compressor of the utility model;

[0014] Figure 4 The utility model is a cross-sectional structural schematic diagram of the overall structure of a high-efficiency sealing structure for a gas compressor.

[0015] In the figure: 1. sealed bearing; 2. connecting pipe; 3. sealing pipe; 4. working fluid; 5. sealing ring; 6. honeycomb ring. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0017] like Figure 1-4 As shown, a high-efficiency sealing structure of a gas compressor comprises two sealing bearings 1. The sealing bearings 1 themselves have the function of preventing liquid from passing through. A connecting pipe 2 is welded to the outer surface of the two sealing bearings 1, that is, the inner diameter of the connecting pipe 2 is matched with the outer diameter of the sealing bearing 1. Sealing tubes 3 are welded to the opposite sides of the inner shafts of the two sealing bearings 1. The inner diameter of the sealing tube 3 is the same as the inner diameter of the inner shaft of the sealing bearing 1. The outer diameter of the sealing tube 3 is the same as the outer diameter of the inner shaft of the sealing bearing 1. Welding can ensure the sealing function. A working fluid 4 is arranged between the connecting tube 2 and the sealing tube 3. The working fluid 4 has the functions of lubrication and heat dissipation. The working fluid 4 fills the space between the connecting tube 2 and the sealing tube 3.

[0018] During installation, the impeller shaft needs to pass through the two sealed bearings 1 and the sealing tube 3, and can be fixed by welding to prevent the entry of air. When the impeller shaft rotates, it will drive the inner shaft of the sealed bearing 1 and the sealing tube 3 to rotate. At this time, air may enter the interior of the sealed bearing 1, but the working fluid 4 can prevent the entry of air, and the sealed bearing 1 can prevent the outflow of the working fluid 4, so that better sealing can be guaranteed.

[0019] A sealing ring 5 is welded to the end of the connecting pipe 2. The sealing ring 5 and the connecting pipe 2 are an integrally formed structure. The inner diameter of the sealing ring 5 is the same as the inner diameter of the sealing tube 3, which is convenient for the impeller shaft to pass through. The sealing ring 5 is movably connected to the impeller shaft. A honeycomb ring 6 is installed between the sealing ring 5 and the nearest sealing bearing 1. The honeycomb ring 6 is fixed on the inner side of the connecting pipe 2. When the impeller shaft rotates, eddy currents are generated at the position of the honeycomb ring 6 to achieve sealing, thereby further improving the sealing performance.

[0020] The working medium 4 is water or lubricating oil. In the present embodiment, the lubricating oil has a better effect. On the one hand, it can provide better heat dissipation, and on the other hand, it can reduce friction and indirectly reduce the impeller shaft load.

[0021] It should be noted that the utility model is a high-efficiency sealing structure for a gas compressor. When in use, the impeller shaft needs to pass through the inside of two sealing bearings 1 and the sealing tube 3, and can be fixed by welding to prevent the entry of air. When the impeller shaft rotates, it will drive the inner shaft of the sealing bearing 1 and the sealing tube 3 to rotate, and the working fluid 4 can dissipate heat better, reduce friction, and indirectly reduce the load on the impeller shaft. At the same time, the inner shaft of the sealing bearing 1 and the sealing tube 3 rotate. At this time, air may enter the inside of the sealing bearing 1, but the working fluid 4 can prevent the entry of air, and the sealing bearing 1 can prevent the outflow of the working fluid 4. At this time, better sealing can be guaranteed. When used in conjunction with the honeycomb ring 6, the position of the honeycomb ring 6 will generate vortices to achieve sealing, thereby further improving the sealing performance.

[0022] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-efficiency sealing structure for a gas compressor, comprising two sealing bearings (1), characterized in that: A connecting tube (2) is welded to the outer surfaces of the two sealed bearings (1), a sealing tube (3) is welded to the opposite sides of the inner shafts of the two sealed bearings (1), and a working medium (4) is provided between the connecting tube (2) and the sealing tube (3).

2. The high-efficiency sealing structure of a gas compressor according to claim 1 is characterized in that: A sealing ring (5) is welded to the end of the connecting pipe (2), a honeycomb ring (6) is installed between the sealing ring (5) and the nearest sealing bearing (1), and the honeycomb ring (6) is fixed on the inner side of the connecting pipe (2).

3. The high-efficiency sealing structure of a gas compressor according to claim 1 is characterized in that: The working medium (4) is water or lubricating oil.

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