Sealing device for pressure container

Abstract

The utility model relates to the technical field of pressure containers, and discloses a sealing device for a pressure container, which comprises a pressure container tank, a sealing pipe is fixedly mounted on the upper surface of the pressure container tank, a cover plate mechanism is mounted at one end of the sealing pipe, and a sealing mechanism is fixedly mounted on the inner wall of the sealing pipe. When the sealing ring is pressed down by the sealing pressing plate, the movable rod slides in the mounting ring, the spring is compressed when the sealing ring is pressed down by the sealing pressing plate, and counter-acting force is applied to the sealing ring through elastic deformation of the spring, so that the sealing ring can better adapt to tiny unevenness of the sealing pressing plate; the sealing pressure is adjusted in a self-adaptive mode, the unevenness of the sealing face is effectively compensated, the good sealing performance in the using process of the pressure container is guaranteed, internal media are prevented from leaking, and the sealing effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel technology, specifically a sealing device for pressure vessels. Background Technology

[0002] Pressure vessels play an indispensable role in many fields such as chemical, petroleum, and energy. For example, in chemical production, many reactions need to be carried out under specific pressure and temperature conditions. Pressure vessels are used to store and process various chemical raw materials and products. In the petroleum industry, they are used to store crude oil, natural gas, etc. In these application scenarios, the media inside the pressure vessel are often dangerous, such as flammable, explosive, toxic, or harmful substances.

[0003] Utility model patent application document with publication number "CN210686960U" discloses a sealing device for pressure vessels, including a pressure tank. A sealing tube is fixedly connected to the upper end of the pressure tank. A closing cap is provided at the upper end of the sealing tube. A connecting port is opened at the upper end of the sealing tube. An auxiliary rod is respectively inserted and connected to the left and right parts of the upper end of the closing cap. A piston plate is provided at the lower end of the closing cap. A piston ring is movably connected to the middle of the outer surface of the piston plate. A sealing cap is connected to the lower part of the auxiliary rods. A rubber ring is provided in the middle of the inner wall of the sealing tube. This utility model's sealing device for pressure vessels, by incorporating a closing cap, piston plate, and sealing cap within the sealing tube, effectively closes the sealing tube during use, greatly improving the sealing effect. Furthermore, the device can be disassembled with very simple operation, bringing convenience to users.

[0004] The sealing device for pressure vessels disclosed in the aforementioned document has the following defects: the sealing ring will wear after long-term use, and the sealing effect will be greatly reduced when the sealing surface has small protrusions or depressions. Since the sealing structure of the technical solution is fixed, it is difficult to adaptively adjust the sealing pressure according to the actual situation of the sealing surface, which leads to poor sealing effect.

[0005] Therefore, it can be seen that the existing sealing devices for pressure vessels do not have a good sealing structure, and it is necessary to improve the existing shortcomings and provide a new sealing device for pressure vessels. Utility Model Content

[0006] The purpose of this invention is to provide a sealing device for pressure vessels, which solves the problem that the existing sealing structure is fixed, making it difficult to adaptively adjust the sealing pressure according to the actual situation of the sealing surface, thus resulting in poor sealing effect.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model relates to a sealing device for pressure vessels, comprising a pressure vessel tank. A sealing tube is fixedly installed on the upper surface of the pressure vessel tank. A cover plate mechanism is installed at one end of the sealing tube. A sealing mechanism is fixedly installed on the inner wall of the sealing tube. The sealing mechanism includes an installation ring, a movable rod, a first limiting plate, and a second limiting plate. The installation ring is fixedly installed on the inner wall of the sealing tube. Several movable rods are slidably connected inside the installation ring. A first limiting plate is fixedly installed on the lower surface of each movable rod. A second limiting plate is fixedly installed on the end of each movable rod away from the first limiting plate.

[0009] Furthermore, the sealing mechanism also includes a spring, a fixing ring, and a sealing ring. The outer surface of the movable rod is fitted with a spring, and the two ends of the spring are respectively connected to the upper surface of the mounting ring and the lower surface of the second limiting plate. Fixing rings are fixedly installed on the upper surface of several second limiting plates, and sealing rings are fixedly installed on the upper surface of the fixing rings.

[0010] Furthermore, the cover plate mechanism includes a sealing cover and a guide slide rod. One end of the sealing tube is internally threaded with a sealing cover, and a guide slide rod is fixedly installed on the lower surface of the sealing cover.

[0011] Furthermore, the cover mechanism also includes a drive motor, and the drive motor is fixedly mounted on the upper surface of the sealing cover.

[0012] Furthermore, the cover plate mechanism also includes a lead screw, which is rotatably connected to the inner wall of the sealing cover, and one end of the lead screw is connected to the output end of the drive motor.

[0013] Furthermore, the cover plate mechanism also includes a sealing pressure plate, the interior of which is slidably connected to the guide slide rod, the interior of which is threadedly connected to the lead screw, and the lower surface of which abuts against the sealing ring.

[0014] This utility model has the following beneficial effects:

[0015] (1) In this utility model, while the sealing plate presses down on the sealing ring, the movable rod slides inside the mounting ring, and the spring is compressed when the sealing plate presses down on the sealing ring. The spring applies a reaction force to the sealing ring through elastic deformation, which can make the sealing ring better adapt to the slight unevenness of the sealing plate, achieve adaptive adjustment of the sealing pressure, effectively compensate for the unevenness of the sealing surface, ensure good sealing performance during the use of the pressure vessel, prevent internal medium leakage, and improve the sealing effect.

[0016] (2) This utility model uses a drive motor to drive a lead screw to control the up and down movement of the sealing plate, thereby achieving sealing and opening operations. Compared with the traditional complex manual sealing operation, it is more convenient and faster.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic cross-sectional view of the sealing tube structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the cover plate mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the sealing mechanism of this utility model;

[0023] The attached diagram lists the components represented by each number as follows:

[0024] In the diagram: 1. Pressure vessel tank; 2. Sealing pipe; 3. Sealing mechanism; 301. Mounting ring; 302. Movable rod; 303. First limiting plate; 304. Second limiting plate; 305. Spring; 306. Fixed ring; 307. Sealing ring; 4. Sealing cover; 5. Guide slide rod; 6. Drive motor; 7. Lead screw; 8. Sealing pressure plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0026] Please see Figures 1-4 As shown, this utility model is a sealing device for a pressure vessel, including a pressure vessel tank 1, a sealing tube 2 fixedly installed on the upper surface of the pressure vessel tank 1, a cover plate mechanism installed at one end of the sealing tube 2, and a sealing mechanism 3 fixedly installed on the inner wall of the sealing tube 2.

[0027] The sealing mechanism 3 includes a mounting ring 301, a movable rod 302, a first limiting plate 303, and a second limiting plate 304. The mounting ring 301 is fixedly installed on the inner wall of the sealing tube 2. Several movable rods 302 are slidably connected inside the mounting ring 301. The first limiting plate 303 is fixedly installed on the lower surface of each movable rod 302. The second limiting plate 304 is fixedly installed on the end of each movable rod 302 away from the first limiting plate 303.

[0028] The sealing mechanism 3 also includes a spring 305, a fixing ring 306 and a sealing ring 307. The outer surface of the movable rod 302 is fitted with a spring 305. The two ends of the spring 305 are respectively connected to the upper surface of the mounting ring 301 and the lower surface of the second limiting plate 304. The upper surfaces of several second limiting plates 304 are fixedly installed with fixing rings 306, and the upper surfaces of the fixing rings 306 are fixedly installed with sealing rings 307.

[0029] While the sealing plate 8 presses down on the sealing ring 307, the movable rod 302 slides inside the mounting ring 301, and the spring 305 is compressed when the sealing plate 8 presses down on the sealing ring 307. The elastic deformation of the spring 305 applies a reaction force to the sealing ring 307, which allows the sealing ring 307 to better adapt to the slight unevenness of the sealing plate 8, thereby achieving adaptive adjustment of the sealing pressure, effectively compensating for the unevenness of the sealing surface, ensuring good sealing performance during the use of the pressure vessel, preventing internal media leakage, and improving the sealing effect.

[0030] The cover plate mechanism includes a sealing cover 4 and a guide slide rod 5. One end of the sealing tube 2 is internally threaded with the sealing cover 4, and the guide slide rod 5 is fixedly installed on the lower surface of the sealing cover 4.

[0031] The cover mechanism also includes a drive motor 6, which is fixedly mounted on the upper surface of the sealing cover 4.

[0032] The cover plate mechanism also includes a lead screw 7, which is rotatably connected to the inner wall of the sealing cover 4. One end of the lead screw 7 is connected to the output end of the drive motor 6.

[0033] The cover plate mechanism also includes a sealing plate 8, the interior of which is slidably connected to the guide slide rod 5, the interior of which is threadedly connected to the lead screw 7, and the lower surface of the sealing plate 8 abuts against the sealing ring 307.

[0034] The sealing cap 4 is threaded into the inside of the sealing tube 2. Then, the drive motor 6 on the sealing cap 4 drives the lead screw 7 to rotate. Since the sealing pressure plate 8 is threaded to the lead screw 7 and slidably connected to the guide slide 5, the rotation of the lead screw 7 will cause the sealing pressure plate 8 to move downward along the guide slide 5. During the downward movement of the sealing pressure plate 8, the sealing pressure plate 8 will gradually press down on the sealing ring 307, thus completing the installation of the sealing device.

[0035] In use, first, thread the sealing cap 4 into the inside of the sealing tube 2. Then, drive the screw 7 to rotate via the drive motor 6 on the sealing cap 4. Since the sealing pressure plate 8 is threadedly connected to the screw 7 and slidably connected to the guide slide 5, the rotation of the screw 7 will cause the sealing pressure plate 8 to move downward along the guide slide 5. During the downward movement of the sealing pressure plate 8, the sealing pressure plate 8 will gradually press down on the sealing ring 307, thus completing the installation of the sealing device. At the same time as the sealing pressure plate 8 presses down on the sealing ring 307, the movable rod 302 slides inside the mounting ring 301, and the spring 305 is compressed when the sealing pressure plate 8 presses down on the sealing ring 307. Through the elastic deformation of the spring 305, a reaction force is applied to the sealing ring 307, which allows the sealing ring 307 to better adapt to the slight unevenness of the sealing pressure plate 8, achieving adaptive adjustment of the sealing pressure, effectively compensating for the unevenness of the sealing surface, ensuring good sealing performance during the use of the pressure vessel, preventing internal media leakage, and improving the sealing effect.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sealing device for a pressure vessel, comprising a pressure vessel tank (1), wherein a sealing tube (2) is fixedly installed on the upper surface of the pressure vessel tank (1), and a cover plate mechanism is installed at one end of the sealing tube (2), characterized in that: A sealing mechanism (3) is fixedly installed on the inner wall of the sealing tube (2); The sealing mechanism (3) includes an installation ring (301), a movable rod (302), a first limiting plate (303), and a second limiting plate (304). The inner wall of the sealing tube (2) is fixedly installed with the installation ring (301). Several movable rods (302) are slidably connected inside the installation ring (301). The lower surface of each movable rod (302) is fixedly installed with the first limiting plate (303). The end of each movable rod (302) away from the first limiting plate (303) is fixedly installed with the second limiting plate (304). The sealing mechanism (3) further includes a spring (305), a fixing ring (306) and a sealing ring (307). The outer surface of the movable rod (302) is fitted with a spring (305). The two ends of the spring (305) are respectively connected to the upper surface of the mounting ring (301) and the lower surface of the second limiting plate (304). The upper surfaces of several second limiting plates (304) are fixedly installed with fixing rings (306), and the upper surfaces of the fixing rings (306) are fixedly installed with sealing rings (307).

2. The sealing device for a pressure vessel according to claim 1, characterized in that: The cover plate mechanism includes a sealing cover (4) and a guide slide rod (5). One end of the sealing tube (2) is internally threaded with the sealing cover (4), and the guide slide rod (5) is fixedly installed on the lower surface of the sealing cover (4).

3. A sealing device for a pressure vessel according to claim 2, characterized in that: The cover plate mechanism also includes a drive motor (6), and the drive motor (6) is fixedly installed on the upper surface of the sealing cover (4).

4. A sealing device for a pressure vessel according to claim 2, characterized in that: The cover plate mechanism also includes a lead screw (7), which is rotatably connected to the inner wall of the sealing cover (4). One end of the lead screw (7) is connected to the output end of the drive motor (6).

5. A sealing device for a pressure vessel according to claim 1, characterized in that: The cover plate mechanism also includes a sealing plate (8), the interior of which is slidably connected to the guide slide rod (5), the interior of which is threadedly connected to the lead screw (7), and the lower surface of which abuts against the sealing ring (307).

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