Pressure vessel with composite structure

Abstract

The utility model discloses a pressure vessel with a composite structure, and belongs to the technical field of pressure vessels with composite structures. A pressure container of a composite structure comprises a tank body and an installation opening formed in the top end of the tank body, a composite inner container is arranged on the inner wall of the tank body, the pressure container further comprises a limiting pipe arranged in the installation opening, a limiting cover is fixedly connected to the bottom of the limiting pipe, and a sealing sleeve is fixedly connected to the outer wall of the limiting cover; when a pipeline is connected through the mounting port, the pipeline enters the mounting port through rotation of a threaded connector of the pipeline, when the connector is matched with a threaded groove in the limiting pipe, the connector is made to rotate in the mounting port all the time through a limiting device of the connector, and meanwhile the connector is in threaded connection with the limiting pipe; the limiting pipe slides upwards under the cooperation of the guide pipe and the limiting groove, then the limiting cover is driven to move upwards, and sealing is enhanced through tight attachment of the sealing sleeve and the composite inner container.

Description

Technical Field

[0001] This utility model relates to the field of composite structure pressure vessel technology, and in particular to a composite structure pressure vessel. Background Technology

[0002] In the chemical industry, composite pressure vessels are used to store various corrosive chemicals, such as hydrochloric acid and sulfuric acid. For example, in the chlor-alkali industry, containers used for storing and transporting chlorine and caustic soda employ composite structures to effectively prevent corrosion of the containers by chlorine and erosion of the container materials by caustic soda.

[0003] However, when using non-metallic materials as the inner liner of a pressure vessel, it is still necessary to use metallic materials to make the nozzle of the pressure vessel. When using a metal nozzle, it is difficult to guarantee the strength and sealing of the interface, which results in a high risk of media leakage at the interface between the nozzle and the inner liner when facing high pressure environments.

[0004] Therefore, in order to address this problem, this utility model proposes a composite structure pressure vessel. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a composite structure pressure vessel that can overcome or at least partially solve the above problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The device includes a tank body and an installation port located at the top of the tank body. The inner wall of the tank body is provided with a composite inner liner. The device also includes: a limiting tube located inside the installation port, with a limiting cover fixedly connected to the bottom of the limiting tube and a sealing sleeve fixedly connected to the outer wall of the limiting cover; and a guide tube fixedly connected to the outer wall of the limiting tube. A limiting groove adapted to the guide tube is provided on the inner wall of the installation port, and the guide tube is slidably connected to the limiting groove.

[0008] Preferably, the inner wall of the limiting tube has a threaded groove that is the same as the inner wall of the mounting port.

[0009] Preferably, a return spring is fixedly connected to the top end of the limiting tube, and the other end of the return spring is fixedly connected to the inner wall of the mounting port.

[0010] Preferably, a compression ring is fixedly connected to the outer wall of the guide tube, and the compression ring is slidably connected to the limiting frame.

[0011] Preferably, a limiting frame is fixedly connected to the inner wall of the mounting port, and a through groove is provided on the outer wall of the limiting frame, in which an airbag sleeve is fixedly connected.

[0012] Preferably, an extension sleeve is fixedly connected to the opening of the composite inner liner, and the extension sleeve is fitted onto the outer wall of the limiting tube.

[0013] Preferably, one end of the airbag sleeve is fixedly connected to the upper surface of the compression ring, and the other end of the airbag sleeve is in contact with the outer wall of the extension sleeve.

[0014] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0015] 1. When this composite pressure vessel is connected to a pipeline through the installation port, the pipeline rotates into the installation port through its own threaded interface. When the interface mates with the threaded groove inside the limiting tube, the limiting device of the interface keeps the interface rotating inside the installation port. At the same time, the interface is threadedly connected to the limiting tube, which allows the limiting tube to slide upward under the cooperation of the guide tube and the limiting groove, and then drives the limiting cover to move upward. The tight fit between the sealing sleeve and the composite inner liner enhances the seal.

[0016] 2. In this composite pressure vessel, the extension sleeve is set on the surface of the limiting frame, and the extrusion ring is slidably connected to the limiting frame. During installation, the limiting tube moves upward through the interface, and the extrusion ring on the outer wall of the guide tube extrudes the airbag sleeve. The expansion of the other end of the airbag sleeve extrudes the extension sleeve, making the extension sleeve fit tightly with the limiting tube, which further improves the seal between the installation port and the interface. Attached Figure Description

[0017] Figure 1 This is a three-dimensional front view structural schematic diagram of a composite structure pressure vessel proposed in this utility model;

[0018] Figure 2 This is a structural schematic diagram of the cross-sectional portion of the tank body in a composite pressure vessel proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the reset spring portion in a composite pressure vessel proposed in this utility model.

[0020] Figure 4 This is a structural schematic diagram of the cross-sectional portion of the air bladder sleeve in a composite pressure vessel proposed in this utility model;

[0021] Figure 5 This is a structural schematic diagram of the limiting frame in a composite pressure vessel proposed in this utility model.

[0022] In the diagram: 1. Tank body; 2. Composite inner liner; 201. Extension sleeve; 3. Installation port; 4. Limiting tube; 401. Limiting cover; 402. Sealing sleeve; 5. Return spring; 6. Limiting groove; 7. Guide tube; 8. Extrusion ring; 9. Limiting frame; 10. Through groove; 11. Airbag sleeve. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0024] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0025] In the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 invention 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 invention.

[0026] Reference Figures 1-5 The container includes a tank body 1 and an installation port 3 located at the top of the tank body 1. The inner wall of the tank body 1 is provided with a composite inner liner 2. The container also includes: a limiting tube 4 located inside the installation port 3, with a limiting cover 401 fixedly connected to the bottom of the limiting tube 4 and a sealing sleeve 402 fixedly connected to the outer wall of the limiting cover 401; a guide tube 7 fixedly connected to the outer wall of the limiting tube 4, with a limiting groove 6 on the inner wall of the installation port 3 that is compatible with the guide tube 7, the guide tube 7 and the limiting groove 6 being slidably connected, and the inner wall of the limiting tube 4 having the same threaded groove as the inner wall of the installation port 3.

[0027] In this invention, when connecting a pipe through the installation port 3, the pipe itself rotates into the installation port 3 via its own threaded interface. When the interface engages with the threaded groove inside the limiting tube 4, the limiting device of the interface keeps the interface rotating inside the installation port 3. At the same time, the interface is threadedly connected to the limiting tube 4, causing the limiting tube 4 to slide upward under the cooperation of the guide tube 7 and the limiting groove 6, which then drives the limiting cover 401 to move upward. The tight fit between the sealing sleeve 402 and the composite inner liner 2 enhances the seal.

[0028] It should be noted that the limiting device at the threaded interface of the pipe itself is a hexagonal nut with a fixed steel threaded interface. With this limiting device, when the pipe is inserted into the installation port 3, the limiting device limits the interface on the outer wall of the installation port 3. As the interface continues to rotate, the limiting tube 4 connected to the threaded interface is pulled upward, which in turn drives the limiting cover 401 to move upward. The tight fit between the sealing sleeve 402 and the composite inner liner 2 enhances the seal.

[0029] Reference Figures 1-5 Furthermore, a reset spring 5 is fixedly connected to the top of the limiting tube 4, and the other end of the reset spring 5 is fixedly connected to the inner wall of the mounting port 3. When the interface is disengaged, the limiting tube 4 is pushed to reset by the elastic force of the reset spring 5.

[0030] Reference Figures 1-5 Furthermore, a compression ring 8 is fixedly connected to the outer wall of the guide tube 7, and the compression ring 8 is slidably connected to the limiting frame 9. The limiting frame 9 is fixedly connected to the inner wall of the mounting port 3. A through groove 10 is opened on the outer wall of the limiting frame 9. An airbag sleeve 11 is fixedly connected in the through groove 10. An extension sleeve 201 is fixedly connected to the opening of the composite inner liner 2. The extension sleeve 201 is sleeved on the outer wall of the limiting tube 4. One end of the airbag sleeve 11 is fixedly connected to the upper surface of the compression ring 8, and the other end of the airbag sleeve 11 is in contact with the outer wall of the extension sleeve 201.

[0031] In this utility model, since the extension sleeve 201 is set on the surface of the limiting frame 9, and the compression ring 8 is slidably connected to the limiting frame 9, the limiting tube 4 is moved upward through the interface during installation. When the compression ring 8 on the outer wall of the guide tube 7 compresses the airbag sleeve 11, the expansion of the other end of the airbag sleeve 11 compresses the extension sleeve 201, so that the extension sleeve 201 and the limiting tube 4 fit tightly together, further improving the seal between the installation port 3 and the interface.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A composite structure pressure vessel comprising a tank body (1) and a mounting port (3) provided at a top end of the tank body (1), characterized in that, The inner wall of the tank body (1) is provided with a composite liner (2), and further comprises: A limiting pipe (4) is arranged in the mounting port (3), and the bottom of the limiting pipe (4) is fixedly connected with a limiting cover (401), and the outer wall of the limiting cover (401) is fixedly connected with a sealing sleeve (402); A guide pipe (7) is fixedly connected to the outer wall of the limiting pipe (4), and a limiting groove (6) matched with the guide pipe (7) is formed in the inner wall of the mounting port (3), and the guide pipe (7) is slidably connected to the limiting groove (6).

2. A composite structure pressure vessel according to claim 1, wherein The inner wall of the limiting pipe (4) is provided with a thread groove matched with the thread groove in the inner wall of the mounting port (3).

3. A composite structure pressure vessel according to claim 1, wherein A reset spring (5) is fixedly connected to the top end of the limiting pipe (4), and the other end of the reset spring (5) is fixedly connected to the inner wall of the mounting port (3).

4. A composite structure pressure vessel according to claim 1, wherein An extrusion ring (8) is fixedly connected to the outer wall of the guide pipe (7), and the extrusion ring (8) is slidably connected to a limiting frame (9).

5. A composite structure pressure vessel according to claim 1, wherein The limiting frame (9) is fixedly connected to the inner wall of the mounting port (3), and a through groove (10) is formed in the outer wall of the limiting frame (9), and an air bag sleeve (11) is fixedly connected in the through groove (10).

6. A composite structure pressure vessel according to claim 1, wherein An extension sleeve (201) is fixedly connected to the opening of the composite liner (2), and the extension sleeve (201) is sleeved on the outer wall of the limiting pipe (4).

7. A composite structure pressure vessel according to claim 5, wherein One end of the air bag sleeve (11) is fixedly connected to the upper surface of the extrusion ring (8), and the other end of the air bag sleeve (11) is matched with the outer wall of the extension sleeve (201).

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