A mechanical sealing device for high-pressure working conditions

Abstract

The present invention belongs to the field of mechanical seal technology and relates to a mechanical sealing device for high-pressure working conditions, wherein a first reinforcement device is used to cooperate with a second reinforcement device to reinforce the position of a sealing device, a second releasing device slides on the sealing device, and the second releasing device squeezes the first releasing device, and the first releasing device is used to release the cooperation between the first reinforcement device and the second reinforcement device, and seal through the sealing device. When the pressure between the sealing device and the sealed structure increases, the first reinforcement device is driven to move in position, so that the first reinforcement device enters the second reinforcement device, and the second reinforcement device and the first reinforcement device cooperate to fix the sealing device on the sealing structure. When the fixation needs to be released, after the internal pressure of the sealing structure is released, the first releasing device is squeezed by the two releasing devices, and the squeezed first releasing device releases the cooperation between the second reinforcement device and the first reinforcement device, so that the sealing device can be quickly removed.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical seals, and in particular relates to a mechanical seal device for high-pressure working conditions. Background Art

[0002] The water and gas used in our lives are transported through pipelines. Such pipelines always maintain a relatively high pressure, and sealing devices are required at the ends of such pipelines for sealing.

[0003] The current sealing methods are all sealed at the end by threaded fitting or welding. The above methods become cumbersome when the sealing device at the end needs to be removed when extension is required later. Summary of the Invention

[0004] The purpose of the present invention is to provide a mechanical sealing device for high pressure working conditions to solve the problem of ensuring sealing.

[0005] At the same time, when the end of the high-pressure pipeline needs to be extended, the sealing structure at the end can be quickly removed.

[0006] In order to achieve the above purpose, the present invention provides a mechanical sealing device for high pressure working conditions, the specific technology of which is

[0007] The plan is as follows:

[0008] A mechanical sealing device for high-pressure working conditions includes a sealing device, characterized in that a first reinforcement device, a second reinforcement device and a first release device are provided inside the sealing device, the first reinforcement device is used to cooperate with the second reinforcement device to reinforce the position of the sealing device, the second release device slides on the sealing device, the second release device squeezes the first release device, and the first release device is used to release the cooperation between the first reinforcement device and the second reinforcement device.

[0009] Furthermore, the number of the first reinforcing device, the second reinforcing device and the first releasing device is set to four.

[0010] Furthermore, the sealing device includes a sealing cover, an installation annular groove, an air inlet hole, a connecting cavity, a through hole and an annular cavity. The sealing cover is mounted on the device to be sealed through the installation annular groove. A connecting cavity is provided inside the sealing cover. The sealing cover connects the connecting cavity with the device to be sealed through the air inlet hole. The connecting cavity is connected to the annular cavity through the through hole, and the annular cavity is connected to the first reinforcement device.

[0011] Furthermore, the first reinforcement device includes a first sliding cavity, a first sliding bolt, a first spring and a limiting hole. The first sliding cavity is arranged inside the sealing cover, the first sliding bolt slides inside the first sliding cavity, the first spring is mounted on the first sliding bolt, the first spring is arranged inside the first sliding cavity, the first sliding bolt is provided with a limiting hole, and the second reinforcement device limits the position of the first sliding bolt through the limiting hole.

[0012] Furthermore, the second reinforcement device includes a second sliding cavity, a second connecting bolt, a second spring, a limit bar, a first inclined block and a second inclined block. The second sliding cavity is arranged inside the sealing cover, the second connecting bolt slides inside the second sliding cavity, the second spring is sleeved on the second connecting bolt, the second spring is arranged inside the second sliding cavity, the limit bar is arranged on the second connecting bolt, and the limit bar is provided with a first inclined block and a second inclined block. The limit bar limits the position of the first sliding bolt through the first inclined block and the limiting hole, and the first releasing device drives the limit bar to release the restriction of the first sliding bolt through the second inclined block.

[0013] Furthermore, there are four of each of the second sliding cavity, the second connecting bolt, the second spring, the limiting strip, the first inclined surface block and the second inclined surface block.

[0014] Furthermore, the first releasing device includes a third sliding chamber, a releasing bolt, a movable disk, a third spring, a connecting rod and a releasing ring. The third sliding chamber is arranged inside the sealing cover, the movable disk slides inside the third sliding chamber, the releasing bolt is arranged on the movable disk, the third spring is sleeved on the releasing bolt, the third spring is arranged inside the third sliding chamber, the releasing ring is arranged on the movable disk through the connecting rod, the releasing ring drives the limit bar to move by squeezing the second inclined block, and the second releasing device drives the movable disk to move by squeezing the releasing bolt.

[0015] Furthermore, the second releasing device includes a sliding groove, a fourth spring, an extrusion moving ring and an extrusion groove. The sliding groove is arranged on the sealing cover, the fourth spring is arranged inside the sliding groove, the extrusion moving ring slides on the sealing cover through the sliding groove, the extrusion moving ring is provided with an extrusion groove, and the fourth spring is arranged between the extrusion moving ring and the extrusion groove.

[0016] Furthermore, the number of the fourth spring and the extrusion groove is four.

[0017] The advantages of the present invention are:

[0018] The present invention seals through a sealing device. When the pressure between the sealing device and the sealed structure increases, the first reinforcement device is driven to move, so that the first reinforcement device enters the second reinforcement device. The second reinforcement device and the first reinforcement device cooperate to fix the sealing device on the sealing structure. When the fixation needs to be released, the pressure inside the sealing structure is released, and the first releasing device is squeezed by the second releasing device. The squeezed first releasing device releases the cooperation between the second reinforcement device and the first reinforcement device, and then the sealing device can be quickly removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0020] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0021] Figure 3 The cross-sectional view of the present invention Figure 1 ;

[0022] Figure 4 for Figure 3 Partially enlarged schematic diagram A;

[0023] Figure 5 The cross-sectional view of the present invention Figure 2 ;

[0024] Figure 6 for Figure 5 Partial enlarged diagram B

[0025] Figure 7 for Figure 5 Partially enlarged schematic diagram C;

[0026] Figure 8 It is a schematic diagram of the structure of the present invention;

[0027] Figure 9 for Figure 8 Partially enlarged schematic diagram D;

[0028] Figure 10 for Figure 8 Partially enlarged schematic diagram E;

[0029] Description of the marks in the figure:

[0030] Sealing device 1; sealing cover 1-1; mounting annular groove 1-2; air inlet hole 1-3; connecting cavity 1-4; through hole 1-5; annular cavity 1-6; first reinforcement device 2; first sliding cavity 2-1; first sliding bolt 2-2; first spring 2-3; limiting hole 2-4; second reinforcement device 3; second sliding cavity 3-1; second connecting bolt 3-2; second spring 3-3; limiting strip 3-4; first inclined surface block 3-5; second inclined surface block 3-6; first releasing device 4; third sliding cavity 4-1; releasing bolt 4-2; moving disk 4-3; third spring 4-4; connecting rod 4-5; releasing ring 4-6; second releasing device 5; sliding groove 5-1; fourth spring 5-2; extrusion moving ring 5-3; extrusion groove 5-4. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below with reference to the accompanying drawings.

[0032] The embodiments of the present invention are part of the embodiments, but not all of the embodiments. Based on the embodiments of the present invention,

[0033] All other embodiments obtained by persons of ordinary skill in the art without creative work are

[0034] It belongs to the scope of protection of this invention.

[0035] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] like Figure 1-10 As shown, a mechanical sealing device for high-pressure working conditions includes a sealing device 1, characterized in that a first reinforcement device 2, a second reinforcement device 3 and a first release device 4 are provided inside the sealing device 1, the first reinforcement device 2 is used to cooperate with the second reinforcement device 3 to reinforce the position of the sealing device 1, the second release device 5 slides on the sealing device 1, the second release device 5 squeezes the first release device 4, and the first release device 4 is used to release the cooperation between the first reinforcement device 2 and the second reinforcement device 3.

[0037] Sealing is performed by the sealing device 1. When the pressure between the sealing device 1 and the sealed structure increases, the first reinforcement device 2 is driven to move, so that the first reinforcement device 2 enters the second reinforcement device 3. The second reinforcement device 3 and the first reinforcement device 2 cooperate to fix the sealing device 1 on the sealing structure. When it is necessary to release the fixation, after the internal pressure of the sealing structure is released, the first releasing device 4 is squeezed by the second releasing device 5. The squeezed first releasing device 4 releases the cooperation between the second reinforcement device 3 and the first reinforcement device 2, and then the sealing device 1 can be quickly removed.

[0038] Among them, such as Figure 1-10 As shown, there are four first reinforcing devices 2 , four second reinforcing devices 3 and four first releasing devices 4 .

[0039] Among them, such as Figure 1-10 As shown, the sealing device 1 includes a sealing cover 1-1, an installation annular groove 1-2, an air inlet hole 1-3, a connecting cavity 1-4, a through hole 1-5 and an annular cavity 1-6. The sealing cover 1-1 is mounted on the device to be sealed through the installation annular groove 1-2. A connecting cavity 1-4 is provided inside the sealing cover 1-1. The sealing cover 1-1 connects the connecting cavity 1-4 with the device to be sealed through the air inlet hole 1-3. The connecting cavity 1-4 is connected to the annular cavity 1-6 through the through hole 1-5. The annular cavity 1-6 is connected to the first reinforcement device 2.

[0040] Among them, such as Figure 1-10 As shown, the first reinforcement device 2 includes a first sliding cavity 2-1, a first sliding bolt 2-2, a first spring 2-3 and a limiting hole 2-4. The first sliding cavity 2-1 is arranged inside the sealing cover 1-1, the first sliding bolt 2-2 slides inside the first sliding cavity 2-1, the first spring 2-3 is sleeved on the first sliding bolt 2-2, the first spring 2-3 is arranged inside the first sliding cavity 2-1, the first sliding bolt 2-2 is provided with a limiting hole 2-4, and the second reinforcement device 3 limits the position of the first sliding bolt 2-2 through the limiting hole 2-4.

[0041] When the pressure rises, the medium generating pressure will enter the connecting chamber 1-4 through the air inlet 1-3, and then enter the annular chamber 1-6 through the through hole 1-5. The medium inside the annular chamber 1-6 will push the first sliding bolt 2-2 to move inside the first sliding chamber 2-1. The first sliding chamber 2-1 will compress the first spring 2-3 during its movement. When the first sliding bolt 2-2 moves to the position of the second reinforcement device 3, the second reinforcement device 3 limits the movement of the first sliding bolt 2-2 through the limiting hole 2-4. The first sliding bolt 2-2 and the second reinforcement device 3 limit and fix the sealing cover 1-1.

[0042] Among them, such as Figure 1-10As shown, the second reinforcement device 3 includes a second sliding cavity 3-1, a second connecting bolt 3-2, a second spring 3-3, a limit bar 3-4, a first inclined block 3-5 and a second inclined block 3-6. The second sliding cavity 3-1 is arranged inside the sealing cover 1-1, the second connecting bolt 3-2 slides inside the second sliding cavity 3-1, the second spring 3-3 is sleeved on the second connecting bolt 3-2, the second spring 3-3 is arranged inside the second sliding cavity 3-1, the limit bar 3-4 is arranged on the second connecting bolt 3-2, and the limit bar 3-4 is provided with a first inclined block 3-5 and a second inclined block 3-6. The limit bar 3-4 limits the position of the first sliding bolt 2-2 through the first inclined block 3-5 and the limiting hole 2-4. The first releasing device 4 drives the limit bar 3-4 to release the restriction of the first sliding bolt 2-2 through the second inclined block 3-6.

[0043] When the first sliding bolt 2-2 drives the limiting hole 2-4 to move to the limiting bar 3-4, the limiting bar 3-4 will first move downward and then reset under the action of the second spring 3-3. Then the first inclined block 3-5 enters the limiting hole 2-4 to limit the first sliding bolt 2-2. When the limit needs to be released, the second inclined block 3-6 is squeezed by the first releasing device 4 to drive the limiting bar 3-4 to move toward the center.

[0044] Among them, such as Figure 1-10 As shown, there are four of each of the second sliding cavity 3-1, the second connecting bolt 3-2, the second spring 3-3, the limiting strip 3-4, the first inclined surface block 3-5 and the second inclined surface block 3-6.

[0045] Among them, such as Figure 1-10 As shown, the first releasing device 4 includes a third sliding chamber 4-1, a releasing bolt 4-2, a movable disk 4-3, a third spring 4-4, a connecting rod 4-5 and a releasing ring 4-6. The third sliding chamber 4-1 is arranged inside the sealing cover 1-1, the movable disk 4-3 slides inside the third sliding chamber 4-1, the releasing bolt 4-2 is arranged on the movable disk 4-3, the third spring 4-4 ​​is mounted on the releasing bolt 4-2, the third spring 4-4 ​​is arranged inside the third sliding chamber 4-1, the releasing ring 4-6 is arranged on the movable disk 4-3 through the connecting rod 4-5, the releasing ring 4-6 drives the limit bar 3-4 to move by squeezing the second inclined block 3-6, and the second releasing device 5 drives the movable disk 4-3 to move by squeezing the releasing bolt 4-2.

[0046] The moving release bolt 4-2 drives the moving disk 4-3 to move, and the moving disk 4-3 drives the release ring 4-6 to move through the connecting rod 4-5. The release ring 4-6 squeezes the second inclined block 3-6, and the second release device 5 squeezes the release bolt 4-2.

[0047] Among them, such as Figure 1-10As shown, the second releasing device 5 includes a sliding groove 5-1, a fourth spring 5-2, an extrusion moving ring 5-3 and an extrusion groove 5-4. The sliding groove 5-1 is arranged on the sealing cover 1-1, the fourth spring 5-2 is arranged inside the sliding groove 5-1, the extrusion moving ring 5-3 slides on the sealing cover 1-1 through the sliding groove 5-1, the extrusion moving ring 5-3 is provided with an extrusion groove 5-4, and the fourth spring 5-2 is arranged between the extrusion moving ring 5-3 and the extrusion groove 5-4.

[0048] The extrusion moving ring 5-3 is pushed downward, and the moving extrusion moving ring 5-3 squeezes the end of the release bolt 4-2 outward to drive the release bolt 4-2 to move.

[0049] Among them, such as Figure 1-10 As shown, there are four fourth springs 5-2 and four extrusion grooves 5-4.

[0050] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A mechanical sealing device for high pressure working conditions, comprising a sealing device (1), characterized in that: A first reinforcing device (2), a second reinforcing device (3) and a first releasing device (4) are provided inside the sealing device (1); the first reinforcing device (2) is used to cooperate with the second reinforcing device (3) to reinforce the position of the sealing device (1); the second releasing device (5) slides on the sealing device (1); the second releasing device (5) squeezes the first releasing device (4); and the first releasing device (4) is used to release the cooperation between the first reinforcing device (2) and the second reinforcing device (3); The sealing device (1) comprises a sealing cover (1-1), an installation annular groove (1-2), an air inlet hole (1-3), a communication cavity (1-4), a through hole (1-5) and an annular cavity (1-6); the sealing cover (1-1) is mounted on a device to be sealed via the installation annular groove (1-2); a communication cavity (1-4) is provided inside the sealing cover (1-1); the sealing cover (1-1) enables the communication cavity (1-4) to communicate with the device to be sealed via the air inlet hole (1-3); the communication cavity (1-4) communicates with the annular cavity (1-6) via the through hole (1-5); and the annular cavity (1-6) is connected to the first reinforcement device (2); The first reinforcement device (2) comprises a first sliding cavity (2-1), a first sliding bolt (2-2), a first spring (2-3) and a limiting hole (2-4); the first sliding cavity (2-1) is arranged inside the sealing cover (1-1); the first sliding bolt (2-2) slides inside the first sliding cavity (2-1); the first spring (2-3) is sleeved on the first sliding bolt (2-2); the first spring (2-3) is arranged inside the first sliding cavity (2-1); the first sliding bolt (2-2) is provided with a limiting hole (2-4); and the second reinforcement device (3) limits the position of the first sliding bolt (2-2) through the limiting hole (2-4); The second reinforcing device (3) comprises a second sliding cavity (3-1), a second connecting bolt (3-2), a second spring (3-3), a limiting strip (3-4), a first inclined surface block (3-5) and a second inclined surface block (3-6); the second sliding cavity (3-1) is arranged inside the sealing cover (1-1); the second connecting bolt (3-2) slides inside the second sliding cavity (3-1); the second spring (3-3) is sleeved on the second connecting bolt (3-2); the second spring (3-3) is arranged in the first Inside the second sliding cavity (3-1), a limit bar (3-4) is arranged on the second connecting bolt (3-2), and a first inclined surface block (3-5) and a second inclined surface block (3-6) are provided on the limit bar (3-4). The limit bar (3-4) limits the position of the first sliding bolt (2-2) through the cooperation of the first inclined surface block (3-5) and the limit hole (2-4), and the first releasing device (4) drives the limit bar (3-4) through the second inclined surface block (3-6) to release the restriction of the first sliding bolt (2-2); When the pressure increases, the medium generating the pressure will enter the communicating cavity (1-4) through the air inlet hole (1-3), and then enter the annular cavity (1-6) through the through hole (1-5). The medium inside the annular cavity (1-6) will push the first sliding bolt (2-2) to move inside the first sliding cavity (2-1). When the first sliding bolt (2-2) moves to the position of the second reinforcement device (3), the second reinforcement device (3) limits the movement of the first sliding bolt (2-2) through the limiting hole (2-4).

2. A mechanical sealing device for high pressure working conditions according to claim 1, characterized in that: The number of the first reinforcing device (2), the second reinforcing device (3) and the first releasing device (4) is four.

3. A mechanical sealing device for high pressure working conditions according to claim 1, characterized in that: Four of each of the second sliding cavity (3-1), the second connecting bolt (3-2), the second spring (3-3), the limiting strip (3-4), the first inclined plane block (3-5) and the second inclined plane block (3-6) are provided.

4. A mechanical sealing device for high pressure working conditions according to claim 1, characterized in that: The first releasing device (4) comprises a third sliding chamber (4-1), a releasing bolt (4-2), a movable disk (4-3), a third spring (4-4), a connecting rod (4-5) and a releasing ring (4-6); the third sliding chamber (4-1) is arranged inside the sealing cover (1-1); the movable disk (4-3) slides inside the third sliding chamber (4-1); the releasing bolt (4-2) is arranged on the movable disk (4-3); the third spring (4-4) is sleeved on the releasing bolt (4-2); the third spring (4-4) is arranged inside the third sliding chamber (4-1); the releasing ring (4-6) is arranged on the movable disk (4-3) through the connecting rod (4-5); the releasing ring (4-6) drives the limiting bar (3-4) to move by squeezing the second inclined surface block (3-6); and the second releasing device (5) drives the movable disk (4-3) to move by squeezing the releasing bolt (4-2).

5. A mechanical sealing device for high pressure working conditions according to claim 1, characterized in that: The second releasing device (5) comprises a sliding groove (5-1), a fourth spring (5-2), an extrusion movable ring (5-3) and an extrusion groove (5-4); the sliding groove (5-1) is arranged on the sealing cover (1-1); the fourth spring (5-2) is arranged inside the sliding groove (5-1); the extrusion movable ring (5-3) slides on the sealing cover (1-1) through the sliding groove (5-1); the extrusion movable ring (5-3) is provided with an extrusion groove (5-4); and the fourth spring (5-2) is arranged between the extrusion movable ring (5-3) and the extrusion groove (5-4).

6. A mechanical sealing device for high pressure working conditions according to claim 5, characterized in that: The fourth spring (5-2) and the extrusion groove (5-4) are provided in four numbers.

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