A hoop type prestressed sealing device

Abstract

The present invention discloses a hoop-type prestressed sealing device, comprising a main body 1 and a sealing ring 2. A pressure cavity 6 for accommodating the sealing ring 2 is arranged in the main body 1. A force-applying conduit 3 connected to the pressure-applying cavity 6 is arranged on the main body 1. The two side surfaces of the sealing sheet of the sealing ring 2 are respectively a force-applying working surface and a sealing working surface. The force-applying working surface faces the cavity, and the sealing working surface is in sealing cooperation with the sealing body. The present invention is based on a prestressed structure and an adjustable principle, and utilizes a guide rope or air pressure to pass through a force-applying conduit and / or a force-applying cavity to apply prestress to the sealing ring, so that the sealing ring is tightly clamped on the sealed component to form a sealing cooperation. The present invention has a simple structure, is easy to operate, has a good sealing effect, and has an adjustable sealing pressure. The multiple sealing structure is more suitable for sealing components with large sealing pressure, especially dynamic components.

Description

Technical Field

[0001] The invention belongs to the technical field of sealing components, and in particular relates to a hoop-type prestressed high-efficiency sealing device with simple structure, easy operation and good sealing effect. Background Art

[0002] Traditional mineral energy is constantly being consumed and depleted, but the energy consumed by human activities is increasing. Seeking sustainable green energy is a goal that humans are constantly pursuing. Water, as a clean energy, contains huge energy. The use of water energy is the oldest, and the application of buoyancy energy is more fully reflected in transportation. In today's increasingly scarce energy, it is of broad sociological and economic significance to develop a device that can fully utilize the buoyancy energy of liquids to convert it into mechanical energy for utilization or further use in power conversion devices, such as power generation devices. The operating effect of such devices is largely subject to the sealing effect of the dynamic matching parts. Traditional small component sealing mostly uses ordinary sealing rings (rings) and sheets (gaskets), but for large-diameter sealing components, this structure often causes seal damage, which brings great inconvenience to maintenance and replacement. Therefore, developing an efficient and simple sealing structure and device suitable for large-diameter components or devices is the only choice to solve such problems. At the same time, it helps to improve the working efficiency of the buoyancy energy conversion device, extend the maintenance-free service life, and thus improve the conversion efficiency and power output effect of buoyancy energy. Summary of the invention

[0003] The object of the present invention is to provide a hoop-type prestressed high-efficiency sealing device with simple structure, easy operation and good sealing effect.

[0004] The objective of the present invention is achieved in this way: the hoop-type prestressed high-efficiency sealing device comprises a main body and a sealing ring. A pressure cavity for accommodating the sealing ring is arranged in the main body. A force-applying conduit connected to the pressure-applying cavity is arranged on the main body. The two side surfaces of the sealing sheet of the sealing ring are respectively a force-applying working surface and a sealing working surface. The force-applying working surface faces the cavity, and the sealing working surface is sealed in cooperation with the component to be sealed.

[0005] The present invention is based on a prestressed structure, and uses a force cable or air pressure through a force-applying conduit and / or a force-applying cavity to apply prestress to the sealing ring, so that the sealing ring is tightly clamped on the sealed component to form a sealed fit. The present invention has a simple structure, is easy to operate, has a good sealing effect, and has an adjustable sealing pressure. The multiple sealing structure is more suitable for sealing components with high sealing pressure, especially dynamic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention;

[0007] Figure 2 for Figure 1 Schematic diagram from top view;

[0008] Figure 3 for Figure 1 Schematic diagram of sealing working state;

[0009] Figure 4 for Figure 3 AA view;

[0010] Figure 5 It is a schematic diagram of a half-section structure of a pneumatic implementation method of the present invention;

[0011] Figure 6 It is a schematic diagram of the structure of a dual airway embodiment;

[0012] Figure 7 It is a schematic diagram of the working state under the pneumatic mode;

[0013] Numbers in the figure: 1-main body, 2-sealing ring, 3-force-applying catheter, 4-locking buckle, 5-force-applying cable, 6-pressure-applying chamber, 61-airtight valve, 7-components to be sealed. DETAILED DESCRIPTION

[0014] The present invention is further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any changes or substitutions made based on the teachings of the present invention belong to the protection scope of the present invention.

[0015] As attached Figures 1 to 7 As shown, the hoop-type prestressed high-efficiency sealing device of the present invention comprises a main body 1 and a sealing ring 2. A pressure cavity 6 for accommodating the sealing ring 2 is arranged in the main body 1. A force-applying conduit 3 connected to the pressure-applying cavity 6 is arranged on the main body 1. The two side surfaces of the sealing sheet of the sealing ring 2 are respectively a force-applying working surface and a sealing working surface. The force-applying working surface faces the cavity, and the sealing working surface is sealed with a component 7 to be sealed.

[0016] Figures 2~4 The structural relationship of the force cable in the embodiment of the present invention is shown. The body 1 is provided with a snap-fit ​​groove fixedly matched with the sealing ring 2, and the two are sealed and snap-fitted, and a pressure chamber 6 is formed between the two.

[0017] The pressure chamber 6 is connected to the outside through a force-applying conduit 3 provided on the main body 1. A locking buckle 4 is provided at the outer end of the force-applying conduit 3, in which a force rope 5 is provided. The force rope 5 is wound around the outside of the sealing ring 2 for at least one circle, and both ends extend from the force-applying conduit 3 and are locked by the locking buckle 4 respectively.

[0018] The locking buckle 4 is arranged at the outer end of the force-applying conduit 3 , and the locking buckle 4 is sleeved on the force-applying rope 5 , and cooperates with the support of the force-applying conduit 3 to lock the force-applying rope 5 with prestress.

[0019] The force rope 5 is a multi-strand twisted steel wire prestressed rope, which is tightly clamped outside the sealing ring 2 for at least 2 weeks or more in the force cavity 6, and its two ends are prestressed and fixed to the end of the force conduit 3 through the locking buckle 4.

[0020] Figures 5 to 7 The force-applying cavity 6 is a sealed airbag cavity structure, the air inlet and outlet of which are arranged outside the body 1, and an airtight valve 61 is arranged thereon.

[0021] The force-applying cavity 6 is formed by the body 1 and the sealing clamping structure on the sealing ring 2 .

[0022] The force-applying cavity 6 is provided with air passages, which are evenly distributed on the sealing ring 2. The number of the air passages is one or more. The force-applying working surface of the sealing sheet of the sealing ring 2 is evenly provided with outwardly facing parallel pressure-applying grooves.

[0023] The sealing working surface of the sealing sheet of the sealing ring 2 is evenly provided with parallel sealing flanges.

[0024] Working principle and working process of the present invention:

[0025] The present invention utilizes a force rope or air pressure to apply prestress to the sealing ring, thereby achieving the purpose of sealing cooperation between the sealing ring and the sealed component.

[0026] The working process of the sealing device of the present invention is as follows:

[0027] 1. Force cable mode. The device of the present invention is a pre-assembled part. According to the designed sealing structure and the required sealing pressure, the number of turns of the force cable 5 around the sealing ring is determined, and the force cable 5 is wound around the outside of the sealing ring. The sealing ring 2 is placed in the sealing cavity 6. The sealing ring 2 and the body 1 are sealed by the structural groove. The two ends of the force cable 5 are respectively extended through the force guide tube 3 and locked by the locking buckle 4. In the working state, the sealing device of the present invention is sleeved on the component to be sealed 7. According to the sealing requirements, the force cable 5 is prestressed and locked by the locking buckle 4. When it is necessary to adjust the sealing pressure or replace the sealing ring, it is only necessary to unlock the locking buckle, or release the pressure or lock it after pressurization through the pressure device.

[0028] 2. Pneumatic pressure mode. The device of the present invention is a pre-assembled part. The sealing ring 2 is placed in the sealing cavity 6. The sealing ring 2 and the main body 1 are sealed by a structural groove. In the working state, the sealing device of the present invention is sleeved on the component 7 to be sealed. According to the sealing requirements, prestress is applied to the force-applying cavity 6 through the air pressure device and the airtight valve 61. After reaching the designed sealing pressure between the sealing ring 2 and the sealed body 7, the airtight valve 61 is closed to enter the sealing working state. When it is necessary to adjust the sealing pressure or replace the sealing ring, it is only necessary to open the airtight valve, or exhaust or pressurize through the air pressure device and then close the airtight valve.

Claims

1. A hoop-type prestressed sealing device, comprising a body (1) and a sealing ring (2), characterized in that: The two side surfaces of the sealing sheet of the sealing ring (2) are respectively a force-applying working surface and a sealing working surface, the force-applying working surface faces the pressure-applying cavity (6), and the sealing working surface is in sealing cooperation with the component to be sealed (7); based on the working mode, the sealing device is a force-applying cable mode structure or a pneumatic pressure mode structure, wherein: In the force-applying cable mode structure, the body (1) of the sealing device is provided with a snap-fit ​​groove fixedly matched with the sealing ring (2), the two are sealedly snap-fitted and a pressure-applying cavity (6) is formed between the two; a force-applying conduit (3) connected to the pressure-applying cavity (6) is provided on the body (1), the pressure-applying cavity (6) is connected to the outside through the force-applying conduit (3), a locking buckle (4) is provided at the outer end of the force-applying conduit (3), a force-applying cable (5) is provided in the pressure-applying cavity (6), and the force-applying cable (5) is wound around the outside of the sealing ring (2) for at least one circle, the two ends of the force-applying cable (5) respectively extend from the force-applying conduit (3), the locking buckle (4) is sleeved on the force-applying cable (5), and cooperates with the support of the force-applying conduit (3) to lock the prestress of the force-applying cable (5); In the pneumatic pressure mode structure, a pressure chamber (6) for accommodating a sealing ring (2) is provided in the body (1) of the sealing device. The pressure chamber (6) is a sealed airbag-type chamber structure formed by the body (1) and a sealing clamping structure on the sealing ring (2). The air inlet and outlet of the sealed airbag-type chamber structure are provided outside the body (1), and an airtight valve (61) is provided on the air inlet and outlet.

2. The hoop type prestressed sealing device according to claim 1, characterized in that: The force rope (5) is a prestressed rope made of multiple twisted steel wires. The force rope (5) is tightly clamped outside the sealing ring (2) for at least 2 weeks or more in the pressure chamber (6). Both ends of the force rope (5) are prestressedly fixed to the end of the force guide tube (3) through locking buckles (4).

3. The hoop type prestressed sealing device according to claim 1, characterized in that: Two air passages are arranged in the pressure chamber (6) and are evenly distributed on the sealing ring (2).

4. The hoop type prestressed sealing device according to claim 1, characterized in that: Outwardly facing parallel pressure grooves are evenly distributed on the force-applying working surface of the sealing sheet of the sealing ring (2).

5. The hoop type prestressed sealing device according to claim 1 or 4, characterized in that: Parallel sealing flanges are evenly distributed on the sealing working surface of the sealing sheet of the sealing ring (2).

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