A gas supply device for a dry gas seal system

Abstract

The utility model discloses a kind of gas supply device for dry gas seal system, it is related to dry gas seal gas supply technical field, including two support plates, the upper inner side of one support plate is equipped with driving shaft, the upper inner side of another support plate is equipped with telescopic shaft, the inner side of driving shaft and telescopic shaft is equipped with one rotating disc, the surface of rotating disc is equidistantly provided with multiple gas supply channels, filter membrane is installed in the gas supply channel, common installation is carried out between two gas supply channels on the same horizontal line from driving telescopic pipeline, the outside of any gas supply channel in two rotating discs is connected with gas supply pipeline. The utility model is provided with a series of structures, full course does not need to cut off gas source, gas supply is continuous without interruption, prolongs the time period of replacing filter membrane, to reduce the frequency of shutdown, improve system continuous operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of dry gas sealing gas supply technology, specifically a gas supply device for a dry gas sealing system. Background Technology

[0002] Dry gas seals are a type of non-contact mechanical seal technology widely used in rotating equipment in the petrochemical, natural gas, and power industries. Unlike traditional oil-lubricated seals, they achieve a non-contact seal by forming a micron-level gas film through two precision-ground end faces under high-speed rotation. This avoids lubricating oil contamination of the medium, reduces wear, and extends seal life.

[0003] Traditional gas supply devices rely on built-in filter membranes to remove particles, oil mist, and moisture from the gas to avoid clogging the sealing end face or damaging the gas film. However, the filter membrane is a component that is easily contaminated and needs to be replaced regularly. Since it is usually installed in series, the gas supply must be cut off and the filter assembly must be disassembled when replacing it, which will cause the gas supply to the seal to be interrupted. At this time, the filter membrane must be replaced while the machine is stopped, which will lead to production interruption and reduce the continuous operation efficiency of the system. Utility Model Content

[0004] The purpose of this invention is to provide an air supply device for a dry gas sealing system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an air supply device for a dry gas sealing system, comprising two support plates, a drive shaft mounted on the upper inner side of one support plate, and a telescopic shaft mounted on the upper inner side of the other support plate. A rotating disk is mounted on the inner side of both the drive shaft and the telescopic shaft. Multiple air supply channels are equidistantly arranged on the circumference of the rotating disk. A filter membrane is installed inside each air supply channel. A driven telescopic pipe is installed between two air supply channels on the same horizontal line. An air supply pipe is connected to the outside of any air supply channel inside the two rotating disks.

[0006] Preferably, a connecting plate is installed between the lower parts of the two support plates.

[0007] Preferably, a central telescopic rod is installed at the center position between the two rotating disks.

[0008] Preferably, a side shaft is installed on the outside of the support plate, and a reinforcing plate is installed on the outside of the side shaft. The reinforcing plate is slidably connected to the gas supply pipe through a through hole.

[0009] Preferably, an annular groove is provided on the outer side of the rotating disk, and the air supply pipe is slidably connected to the annular groove.

[0010] Preferably, the outer end of the gas supply channel is provided with an installation groove, and multiple edge telescopic rods are installed at equal intervals around the inner circumference of the installation groove. Two limiting arc plates are symmetrically installed at the outer ends of the multiple edge telescopic rods, and the dimensions of the two limiting arc plates are adapted to the outer wall dimensions of the gas supply pipeline.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This air supply device, designed for dry gas sealing systems, uses two rotating discs to evenly distribute air supply channels containing filter membranes. During operation, it connects to the air source and the sealing system via two air supply pipes. When the filter membrane needs to be replaced, the rotating discs are driven to switch channels, and the edge telescopic rods automatically release the original channel limit and lock the new channel. The entire process does not require cutting off the air source, ensuring continuous and uninterrupted air supply. This extends the time cycle for replacing the filter membrane, thereby reducing the frequency of downtime and improving the continuous operation efficiency of the system. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the rotating disk of this utility model; Figure 3 For the present utility model Figure 2 A magnified view of A in the middle.

[0013] In the diagram: 1. Support plate; 2. Connecting plate; 3. Telescopic shaft; 4. Drive shaft; 5. Air supply pipe; 6. Rotating disc; 7. Central telescopic rod; 8. Driven telescopic pipe; 9. Side shaft; 10. Reinforcing plate; 11. Annular groove; 12. Air supply channel; 13. Limiting arc plate; 14. Mounting groove; 15. Edge telescopic rod. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," 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 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] like Figures 1 to 3 As shown, the air supply device for the dry gas sealing system in this embodiment includes two support plates 1. A drive shaft 4 is installed on the upper inner side of one support plate 1, and a telescopic shaft 3 is installed on the upper inner side of the other support plate 1. The telescopic shaft 3 is passively telescopic and will move synchronously under the action of external force, but cannot actively telescopic. A drive motor is installed inside the support plate 1 connected to the drive shaft 4. The drive motor is connected to an external power source, and its output end is connected to the drive shaft 4. The drive motor can drive the drive shaft 4 to rotate. A rotating disk 6 is installed on the inner side of both the drive shaft 4 and the telescopic shaft 3. When the drive shaft 4 rotates, the two rotating disks 6 will rotate synchronously. The telescopic shaft 3 is rotatably connected to one of the rotating disks 6 and will not rotate synchronously. Multiple air supply channels 12 are equidistantly opened on the circumference of the rotating disk 6. The internal filter membrane is installed in the 12. A driven telescopic pipe 8 is installed between the two air supply channels 12 on the same horizontal line. The two rotating disks 6 are connected together by multiple driven telescopic pipes 8, so that the two rotating disks 6 can rotate synchronously. The external of any air supply channel 12 inside the two rotating disks 6 is connected to an air supply pipe 5. The two air supply pipes 5 are respectively connected to the air source and the dry gas sealing system, thus forming a complete air supply pipeline. The two air supply pipes 5 need to be set horizontally. The internal airflow will enter one air supply pipe 5, the air supply channel 12 inside one rotating disk 6 from the air source, and enter the air supply channel 12 of the other rotating disk 6 from the driven telescopic pipe 8. Finally, it will be sent into the dry gas sealing system from the other air supply pipe 5. During the transportation process, the filter membrane inside the two air supply channels 12 will filter the airflow.

[0017] Specifically, a connecting plate 2 is installed between the lower parts of the two support plates 1. The connecting plate 2 can enhance the connection strength between the two support plates 1 and enhance the stability of the equipment.

[0018] Furthermore, a central telescopic rod 7 is installed at the center position between the two rotating disks 6. The central telescopic rod 7 is connected to an external power source and can actively extend and retract. When the central telescopic rod 7 extends and retracts, multiple driven telescopic pipes 8 and telescopic shafts 3 will extend and retract synchronously to facilitate the disassembly and installation of the equipment.

[0019] Furthermore, a side shaft 9 is installed on the outside of the support plate 1, and a reinforcing plate 10 is installed on the outside of the side shaft 9. The reinforcing plate 10 is slidably connected to the gas supply pipe 5 through a through hole. The position of the gas supply pipe 5 can be reinforced by the reinforcing plate 10 to prevent the position of the gas supply pipe 5 from moving.

[0020] Furthermore, an annular groove 11 is provided on the outer side of the rotating disk 6, and the air supply pipe 5 is slidably connected to the annular groove 11. A sealing gasket is provided on the contact surface between the annular groove 11 and the air supply pipe 5 to enhance the sealing performance and prevent air leakage.

[0021] Furthermore, an installation groove 14 is provided at the outer end of the gas supply channel 12. Multiple edge telescopic rods 15 are installed at equal intervals around the inner circumference of the installation groove 14. Two limiting arc plates 13 are symmetrically installed at the outer ends of the multiple edge telescopic rods 15. The size of the two limiting arc plates 13 is adapted to the outer wall size of the gas supply pipe 5. When the gas supply channel 12 needs to be replaced, the multiple edge telescopic rods 15 will drive the limiting arc plates 13 to move inward. At this time, the limiting arc plates 13 will lose their limiting effect on the gas supply pipe 5. Through the rotation of the drive shaft 4, the rotating disk 6 will be driven to rotate, so that another gas supply channel 12 is connected to the gas supply pipe 5. And through the multiple edge telescopic rods 15, the limiting arc plates 13 will move outward, thereby limiting the gas supply pipe 5.

[0022] The usage method of this embodiment is as follows: Start the drive motor, and the drive shaft 4 drives the two rotating disks 6 to rotate synchronously and uniformly. At this time, the air supply pipe 5 connected to the air source is connected to the air supply channel 12 of one of the rotating disks 6. After the airflow is purified by the filter membrane in the channel, it flows into the air supply channel 12 of the other rotating disk 6 through the driven telescopic pipe 8, is filtered again by the filter membrane, and is finally output from the air supply pipe 5 connected to the dry gas sealing system, forming a stable clean air source. The air supply pipe 5 is limited by two limiting arc plates 13. When it is necessary to replace the air supply channel 12, multiple edge telescopic rods 15 will drive the limiting arc plates 13 to move inward. At this time, the limiting arc plates 13 will lose the limiting effect on the air supply pipe 5. Through the rotation of the drive shaft 4, the rotating disk 6 will be driven to rotate, so that the other air supply channel 12 is connected to the air supply pipe 5. Through the multiple edge telescopic rods 15, the limiting arc plates 13 will be driven to move outward, thereby limiting the air supply pipe 5.

[0023] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An air supply device for a dry gas sealing system, comprising two support plates (1), characterized in that: A drive shaft (4) is installed on the upper inner side of one of the support plates (1), and a telescopic shaft (3) is installed on the upper inner side of the other support plate (1). A rotating disk (6) is installed on the inner side of both the drive shaft (4) and the telescopic shaft (3). Multiple air supply channels (12) are equidistantly opened on the circumference of the surface of the rotating disk (6). A filter membrane is installed inside the air supply channel (12). A driven telescopic pipe (8) is installed between two air supply channels (12) on the same horizontal line. An air supply pipe (5) is connected to the outside of any air supply channel (12) inside the two rotating disks (6).

2. The gas supply device for a dry gas sealing system according to claim 1, characterized in that: A connecting plate (2) is installed between the lower parts of the two support plates (1).

3. The gas supply device for a dry gas sealing system according to claim 1, characterized in that: A central telescopic rod (7) is installed at the center position between the two rotating disks (6).

4. The gas supply device for a dry gas sealing system according to claim 1, characterized in that: A side shaft (9) is installed on the outside of the support plate (1), and a reinforcing plate (10) is installed on the outside of the side shaft (9). The reinforcing plate (10) and the gas supply pipe (5) are slidably connected through a through hole.

5. The gas supply device for a dry gas sealing system according to claim 1, characterized in that: The outer side of the rotating disk (6) is provided with an annular groove (11), and the gas supply pipe (5) is slidably connected to the annular groove (11).

6. The gas supply device for a dry gas sealing system according to claim 5, characterized in that: The outer end of the gas supply channel (12) is provided with an installation groove (14). Multiple edge telescopic rods (15) are installed at equal intervals around the inner circumference of the installation groove (14). Two limiting arc plates (13) are symmetrically installed at the outer ends of the multiple edge telescopic rods (15). The size of the two limiting arc plates (13) is adapted to the outer wall size of the gas supply pipe (5).

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