Dry gas sealing device of synthesis gas compressor

Abstract

The utility model relates to the technical field of sealing, in particular to a dry gas sealing device of a synthesis gas compressor. The dry gas sealing device of the synthesis gas compressor comprises a second machine shell and a first machine shell, a first annular groove is formed in the left side of the second machine shell, springs are evenly arranged on the right side of the inner side wall of the first annular groove, a sliding ring is arranged on the left sides of the springs, and a first sealing ring is arranged on the left side of the sliding ring; when the synthesis gas compressor vibrates during working, and a gap is formed in the connecting position between the first machine shell and the second machine shell, the spring drives the first sealing ring on the sliding ring to be tightly attached to the first right side face of the first machine shell through the elastic force of the spring, and then the connecting gap between the first machine shell and the second machine shell is sealed; and meanwhile, two groups of second sealing rings are used for sealing a gap between the sliding ring and the first annular groove, so that the internal dry gas sealing effect of the synthesis gas compressor can be effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing, in particular to a dry gas sealing device for a synthetic gas compressor. Background Art

[0002] The dry gas sealing device of the synthesis gas compressor is a device for sealing the dry gas during the operation of the synthesis gas compressor to prevent the synthesis gas from leaking out of the compressor. Currently, nitrogen is often used as the sealing gas of the compressor. However, during the sealing process, the leakage of nitrogen into the compression chamber can easily cause the ratio of carbon monoxide and hydrogen in the synthesis gas to change, thereby affecting the yield of methanol prepared from the synthesis gas. The synthesis gas compressor adopts a centrifugal compressor, which is a multi-stage centrifugal compressor with a vertically split casing.

[0003] A Chinese patent with announcement number CN220319892U discloses a dry gas sealing device for a synthetic gas compressor, comprising a first casing and a first rubber ring, wherein a first rubber ring is fixedly connected to one side of the left end of the first casing, a first rotating rod is rotatably connected to the inner side of the left end of the first casing, a gear is fixedly connected to the outer side of one end of the first rotating rod, a first bevel gear is fixedly connected to the outer side of the first rotating rod, the outer side of the first bevel gear is meshed with the outer side of the second bevel gear, a second rotating rod is fixedly connected to the inner side of the second bevel gear, a first rotating wheel is fixedly connected to the outer side of the second rotating rod, and the first rotating wheel is rotatably connected to the second rotating wheel via a belt. In the utility model, when the synthetic gas compressor is running at a high speed and several casings are moved, the moving casing driving device further fixes the two casings, reduces the stability of the connection between the devices due to vibration reduction, and protects the sealing effect inside the synthetic gas compressor;

[0004] The above-mentioned existing technical solution has the following defects: the sealing effect of protecting the interior of the synthesis gas compressor can only be achieved by adding multiple sets of mechanical parts such as the first rotating rod, gears, first bevel gears and second bevel gears in the first casing, which undoubtedly increases the processing difficulty of the device. At the same time, the vibration generated when the synthesis gas compressor is working will affect the mechanical parts that cooperate with each other in the first casing, thereby reducing the reliability of the device. In view of the above situation, technical innovation is carried out on the basis of the existing synthesis gas compressor dry gas sealing device. Utility Model Content

[0005] The utility model aims to provide a dry gas sealing device for a synthesis gas compressor to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a dry gas sealing device for a synthetic gas compressor, comprising:

[0007] The second housing and the first housing, the second housing is provided with a first annular groove on the left side, a spring is evenly arranged on the right side of the inner side wall of the first annular groove, a sliding ring is arranged on the left side of the spring, a first sealing ring is arranged on the left side of the sliding ring, and a group of second sealing rings are arranged on the outer side wall and the inner side wall of the sliding ring, wherein:

[0008] The outer side wall of the second sealing ring located in the outer circle of the two groups of the second sealing rings fits with the outer circle inner wall of the first annular groove, and the inner side wall of the second sealing ring located in the inner circle of the two groups of the second sealing rings fits with the inner circle inner wall of the first annular groove, and the elastic force of the spring is greater than the friction force between the second sealing ring and the first annular groove.

[0009] Preferably, the first housing is located on the left side of the second housing, the right end of the first housing is inserted into the second housing, and the left side of the first sealing ring is in contact with the first right side surface of the first housing.

[0010] Preferably, a second annular groove is formed on the second right side surface of the second housing, and a fifth sealing ring is placed in the second annular groove.

[0011] Preferably, a third sealing ring is provided on the inner side wall of the second housing, and the inner side wall of the third sealing ring is in contact with the right side of the outer side wall of the first housing.

[0012] Preferably, a fourth sealing ring is provided on the right side of the inner side wall of the second housing, the right side of the third sealing ring is fitted with the left side of the fourth sealing ring, and the fourth sealing ring and the third sealing ring are integrally formed.

[0013] Preferably, a third annular groove is formed on the left side of the fourth sealing ring, and the right side of the fifth sealing ring is inserted into the third annular groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] According to the utility model, when the synthetic gas compressor generates vibration during operation, which causes a gap to be generated at the connection between the first casing and the second casing, the spring drives the first sealing ring on the sliding ring to closely fit with the first right side surface of the first casing through its own elastic force, thereby sealing the connection gap between the first casing and the second casing, and at the same time, the two sets of second sealing rings seal the gap between the sliding ring and the first annular groove, thereby effectively ensuring the dry gas sealing effect inside the synthetic gas compressor;

[0016] Through the cooperation between the fourth sealing ring and the fifth sealing ring and the fitting of the third sealing ring to the right side of the outer side wall of the first casing, the connection gap between the first casing and the second casing can be sealed, thereby further ensuring the dry gas sealing effect inside the synthesis gas compressor;

[0017] The entire device has a simple structure, low production cost and difficulty, and can effectively ensure the dry gas sealing effect inside the synthesis gas compressor, so it is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a dry gas sealing device for a synthetic gas compressor according to the utility model;

[0019] Figure 2 This is a front cross-sectional view of a dry gas sealing device for a synthetic gas compressor according to the utility model;

[0020] Figure 3 For this utility model Figure 2 Enlarged view of part A.

[0021] In the figure: 1, first housing; 11, second housing; 12, first sealing ring; 13, sliding ring; 14, second sealing ring; 15, spring; 16, third sealing ring; 17, fourth sealing ring; 18, fifth sealing ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 3A dry gas sealing device for a synthetic gas compressor comprises a second casing 11 and a first casing 1, a first annular groove is provided on the left side of the second casing 11, a spring 15 is evenly fixedly provided on the right side of the inner side wall of the first annular groove, a sliding ring 13 is fixedly provided on the left side of the spring 15, a first sealing ring 12 is fixedly provided on the left side of the sliding ring 13, a group of second sealing rings 14 are fixedly provided on the outer side wall and the inner side wall of the sliding ring 13, the outer side wall of the second sealing ring 14 located in the outer ring of the two groups of second sealing rings 14 is in contact with the outer ring inner wall of the first annular groove, the inner side wall of the second sealing ring 14 located in the inner ring of the two groups of second sealing rings 14 is in contact with the inner ring inner wall of the first annular groove, and the elastic force of the spring 15 is greater than the elastic force between the second sealing ring 14 and the first annular groove. Friction force, the first housing 1 is located on the left side of the second housing 11, and the right end of the first housing 1 is inserted into the second housing 11. The left side of the first sealing ring 12 fits with the first right side surface of the first housing 1. When the synthesis gas compressor vibrates during operation, which causes a gap in the connection between the first housing 1 and the second housing 11, the spring 15 drives the sliding ring 13 to move through its own elastic force, thereby driving the first sealing ring 12 on the sliding ring 13 to fit tightly with the first right side surface of the first housing 1, thereby sealing the connection gap between the first housing 1 and the second housing 11, and at the same time, two groups of second sealing rings 14 seal the gap between the sliding ring 13 and the first annular groove, thereby effectively ensuring the dry gas sealing effect inside the synthesis gas compressor.

[0024] A second annular groove is provided on the second right side surface of the second casing 11, and a fifth sealing ring 18 is placed in the second annular groove. A third sealing ring 16 is fixedly provided on the inner side wall of the second casing 11, and the inner side wall of the third sealing ring 16 fits with the right side of the outer side wall of the first casing 1. A fourth sealing ring 17 is fixedly provided on the right side of the inner side wall of the second casing 11, and the right side of the third sealing ring 16 fits with the left side of the fourth sealing ring 17. The fourth sealing ring 17 and the third sealing ring 16 are integrally formed. A third annular groove is provided on the left side of the fourth sealing ring 17, and the right side of the fifth sealing ring 18 is inserted into the third annular groove. Through the mutual cooperation of the fourth sealing ring 17 and the fifth sealing ring 18 and the fitting of the third sealing ring 16 with the right side of the outer side wall of the first casing 1, the connecting gap between the first casing 1 and the second casing 11 can be sealed, thereby further ensuring the internal dry gas sealing effect of the synthetic gas compressor.

[0025] Working principle: The outer side of the right end of the first casing 1 is fixedly installed on the inner side of the left end of the second casing 11 by bolts. When the synthesis gas compressor vibrates during operation, which causes a gap in the connection between the first casing 1 and the second casing 11, the spring 15 drives the sliding ring 13 to move by its own elastic force, thereby driving the first sealing ring 12 on the sliding ring 13 to fit tightly with the first right side surface of the first casing 1, thereby sealing the connection gap between the first casing 1 and the second casing 11. At the same time, the two groups of second sealing rings 14 seal the gap between the sliding ring 13 and the first annular groove, thereby effectively ensuring the dry gas sealing effect inside the synthesis gas compressor. Through the mutual cooperation of the fourth sealing ring 17 and the fifth sealing ring 18 and the fitting of the third sealing ring 16 to the right side of the outer wall of the first casing 1, the connection gap between the first casing 1 and the second casing 11 can be sealed, thereby further ensuring the dry gas sealing effect inside the synthesis gas compressor.

Claims

1. A dry gas sealing device for a synthesis gas compressor, characterized in that: include: A second housing (11) and a first housing (1), wherein a first annular groove is provided on the left side of the second housing (11), a spring (15) is evenly arranged on the right side of the inner side wall of the first annular groove, a sliding ring (13) is arranged on the left side of the spring (15), a first sealing ring (12) is arranged on the left side of the sliding ring (13), and a group of second sealing rings (14) are arranged on the outer side wall and the inner side wall of the sliding ring (13), wherein: The outer side wall of the second sealing ring (14) located in the outer ring of the two sets of the second sealing rings (14) fits with the outer ring inner wall of the first annular groove, and the inner side wall of the second sealing ring (14) located in the inner ring of the two sets of the second sealing rings (14) fits with the inner ring inner wall of the first annular groove, and the elastic force of the spring (15) is greater than the friction force between the second sealing ring (14) and the first annular groove.

2. A dry gas sealing device for a synthesis gas compressor according to claim 1, characterized in that: The first housing (1) is located on the left side of the second housing (11), the right end of the first housing (1) is inserted into the second housing (11), and the left side of the first sealing ring (12) is in contact with the first right side surface of the first housing (1).

3. A dry gas sealing device for a synthesis gas compressor according to claim 2, characterized in that: A second annular groove is provided on the second right side surface of the second housing (11), and a fifth sealing ring (18) is placed in the second annular groove.

4. A dry gas sealing device for a synthesis gas compressor according to claim 3, characterized in that: The inner side wall of the second housing (11) is provided with a third sealing ring (16), and the inner side wall of the third sealing ring (16) is in contact with the right side of the outer side wall of the first housing (1).

5. A dry gas sealing device for a synthesis gas compressor according to claim 4, characterized in that: A fourth sealing ring (17) is provided on the right side of the inner side wall of the second housing (11), the right side of the third sealing ring (16) is in contact with the left side of the fourth sealing ring (17), and the fourth sealing ring (17) and the third sealing ring (16) are integrally formed.

6. A dry gas sealing device for a synthesis gas compressor according to claim 5, characterized in that: A third annular groove is provided on the left side of the fourth sealing ring (17), and the right side of the fifth sealing ring (18) is inserted into the third annular groove.

Images