Rotating shaft sealing structure applied to underwater operation equipment

Abstract

The rotating shaft sealing structure applied to the underwater operation equipment comprises a machine shell, a sealing ring and a sealing ring, one end of the rotating shaft extends into the machine shell through the shaft hole; the high-pressure cavity is formed in the inner side of the shaft hole, and the high-pressure cavity is connected with the pressurization module through a pipeline; air pressure in the high-pressure cavity is larger than water pressure outside the shaft hole. According to the rotating shaft sealing structure applied to the underwater operation equipment, the high-pressure cavity corresponding to the shaft hole is formed in the inner side of the machine shell, the air pressure in the high-pressure cavity is higher than the water pressure outside the shaft hole through the pressurization module, then the problem of leakage caused by pressure difference at the connecting position of the rotating shaft in the underwater operation equipment is solved, the structure is simple and ingenious, and the practicability is high. And popularization and use are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of underwater operating equipment sealing, and in particular to a rotating shaft sealing structure used in underwater operating equipment. Background Art

[0002] At present, deep-water shaft seals usually use mechanical seals in the form of graphite end face seals, but this sealing structure has a small amount of water seepage during normal operation, and when the underwater working equipment is suspended in the water, the rotating shaft of the underwater working equipment will stop rotating. The graphite dynamic ring and static ring in the sealing structure are relatively still, so that the end faces of the dynamic ring and the static ring cannot generate a sealing environment, thereby causing the overall seal to fail. This deep-water shaft sealing structure seriously affects the performance and overall service life of the underwater working equipment.

[0003] Therefore, in view of the shortcomings of the prior art, it is necessary to design a shaft sealing structure for use in underwater operating equipment to solve the above problems. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the present invention aims to provide a shaft sealing structure for use in underwater working equipment.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the technical solution provided by the present invention is: a rotating shaft sealing structure applied to underwater working equipment, comprising: A casing, wherein the casing is provided with an axial hole; A rotating shaft, one end of which extends into the housing through the shaft hole; A high-pressure chamber is formed on the inner side of the shaft hole, and the high-pressure chamber is connected to the boost module through a pipeline; the air pressure in the high-pressure chamber is greater than the water pressure outside the shaft hole.

[0006] The preferred technical solution is: a sealing cover corresponding to the shaft hole is provided on the inner side of the casing, and the high-pressure chamber is formed between the sealing cover and the casing.

[0007] A preferred technical solution is: a water pressure sensor is provided on the outside of the casing, and the water pressure sensor is used to monitor the water pressure outside the casing in real time.

[0008] A preferred technical solution is: it also includes a control module, and the control module is connected to the water pressure sensor and the boost module at the same time.

[0009] The preferred technical solution is: a first sealing ring is provided between the rotating shaft and the shaft hole, and a second sealing ring is provided between the sealing cover and the housing.

[0010] Due to the application of the above technical solution, the present invention has the following beneficial effects: The shaft sealing structure proposed in the present invention is applied to underwater working equipment. A high-pressure chamber corresponding to the shaft hole is formed on the inner side of the casing, and the air pressure in the high-pressure chamber is made higher than the water pressure outside the shaft hole through a booster module, thereby solving the leakage problem caused by the pressure difference at the shaft connection in the underwater working equipment. The structure is simple and ingenious and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the sealing structure part involved in the present invention. DETAILED DESCRIPTION

[0012] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0013] See also Figure 1 . It should be noted that in the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third" and the like are only used to distinguish the descriptions, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0014] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0015] Example: like Figure 1 As shown, according to an overall technical concept of the present invention, a shaft sealing structure used in underwater working equipment is provided, comprising: A casing 1, wherein the casing 1 is provided with an axis hole 11; A rotating shaft 2, one end of which extends into the housing 1 through the shaft hole 11; The high-pressure chamber 3 is formed on the inner side of the shaft hole 11 , and the high-pressure chamber 3 is connected to the boost module 4 through a pipeline; the air pressure in the high-pressure chamber 3 is greater than the water pressure outside the shaft hole 11 .

[0016] like Figure 1 As shown, in an exemplary embodiment of the present invention, a sealing cover 5 corresponding to the shaft hole 11 is provided on the inner side of the casing 1 , and a high-pressure chamber 3 is formed between the sealing cover 5 and the casing 1 .

[0017] like Figure 1 As shown, in an exemplary embodiment of the present invention, a water pressure sensor (not shown) is provided on the outer side of the casing 1, and the water pressure sensor is used to monitor the water pressure outside the casing 1 in real time.

[0018] like Figure 1 As shown, in an exemplary embodiment of the present invention, a control module (not shown) is also included, and the control module is connected to the water pressure sensor and the boosting module 4 at the same time. As the working water depth of the underwater equipment changes, the water pressure also changes accordingly. The water pressure is monitored in real time by the water pressure sensor, and based on this, the boosting module 4 is controlled to pressurize the high-pressure chamber 3, so that the air pressure in the high-pressure chamber 3 is always higher than the water pressure outside the shaft hole 11, avoiding leakage caused by the pressure difference.

[0019] like Figure 1 As shown, in an exemplary embodiment of the present invention, a first sealing ring 6 is provided between the rotating shaft 2 and the shaft hole 11 , and a second sealing ring 7 is provided between the sealing cover 5 and the housing 1 .

[0020] Therefore, the present invention has the following advantages: The shaft sealing structure proposed in the present invention is applied to underwater working equipment. A high-pressure chamber corresponding to the shaft hole is formed on the inner side of the casing, and the air pressure in the high-pressure chamber is made higher than the water pressure outside the shaft hole through a booster module, thereby solving the leakage problem caused by the pressure difference at the shaft connection in the underwater working equipment. The structure is simple and ingenious and is suitable for popularization and use.

[0021] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A rotating shaft sealing structure used in underwater working equipment, characterized in that: include: A casing, wherein the casing is provided with an axial hole; A rotating shaft, one end of which extends into the housing through the shaft hole; A high-pressure chamber is formed on the inner side of the shaft hole, and the high-pressure chamber is connected to the boost module through a pipeline; the air pressure in the high-pressure chamber is greater than the water pressure outside the shaft hole.

2. The rotating shaft sealing structure used in underwater working equipment according to claim 1 is characterized in that: A sealing cover corresponding to the shaft hole is disposed on the inner side of the casing, and the high-pressure chamber is formed between the sealing cover and the casing.

3. The shaft sealing structure used in underwater working equipment according to claim 1, characterized in that: A water pressure sensor is arranged on the outer side of the casing, and the water pressure sensor is used to monitor the water pressure outside the casing in real time.

4. The rotating shaft sealing structure used in underwater working equipment according to claim 3 is characterized in that: It also includes a control module, which is connected to the water pressure sensor and the boost module at the same time.

5. The rotating shaft sealing structure used in underwater working equipment according to claim 1 is characterized in that: A first sealing ring is arranged between the rotating shaft and the shaft hole, and a second sealing ring is arranged between the sealing cover and the housing.

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