Pressure vessel cover body opening and closing structure

Abstract

The utility model provides a pressure vessel cover body opening and closing structure which is convenient to open and close a pressure vessel cover body and capable of reducing the working intensity in the opening and closing process of the cover body, and relates to the technical field of opening and closing of pressure vessel cover bodies. A pressure vessel cover body opening and closing structure comprises a tank body, an opening and closing mechanism and a cover body arranged in the tank body in a covering mode and matched with the tank body, and an annular locking groove is formed in the inner wall of the tank body; the opening and closing mechanism comprises a hanging bracket, a lifting control mechanism, a locking driving mechanism and locking blocks, the hanging bracket is connected with the cover body, the lifting control mechanism is arranged below the hanging bracket in a supporting mode, the number of the locking blocks is at least two, the locking blocks are arranged on the upper surface of the cover body in the circumferential direction, the locking blocks are arranged in the radial direction of the cover body in a sliding mode, and the locking driving mechanism drives the locking blocks to rotate. The outer end of the locking block is provided with an inserting part matched with the locking groove in an inserting mode, and the locking driving mechanism is connected with the locking block. The working intensity in the opening and closing process of the cover body can be reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel cover opening and closing technology, specifically a pressure vessel cover opening and closing structure. Background Technology

[0002] Pressure vessels are sealed containers capable of withstanding pressure and are widely used in industries such as petroleum, chemical, power, and food. During the manufacturing process of pressure vessels, a cover that seals tightly is typically installed on top for easy inspection and maintenance. Currently, similar pressure vessels on the market generally use bolts to fasten the cover, requiring a large number of bolts to ensure a tight seal. This structure not only increases the workload and reduces efficiency for operators, especially with large containers, during opening and closing, but also impacts production efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a pressure vessel cover opening and closing structure that is convenient to open and close and can reduce the workload during the opening and closing process.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a pressure vessel cover opening and closing structure, including a tank body, an opening and closing mechanism and a cover body that is installed in the tank body and cooperates with the tank body, wherein the inner wall of the tank body is provided with an annular locking groove that extends circumferentially and is located above the cover body.

[0005] The opening and closing mechanism includes a hanger, a lifting control mechanism, a locking drive mechanism, and locking blocks. The hanger is positioned above and connected to the cover. The lifting control mechanism is supported below the hanger to control its lifting and lowering. There are at least two locking blocks arranged circumferentially on the upper surface of the cover. The locking blocks slide along the radial direction of the cover. The outer end of each locking block has an insertion part that engages with the locking groove. The locking drive mechanism is mounted on the cover and connected to the locking blocks to drive them to slide along the radial direction of the cover, thereby causing the insertion part to be inserted into or removed from the locking groove.

[0006] Furthermore, the locking drive mechanism consists of multiple locking cylinders that are configured one-to-one with the locking blocks.

[0007] Furthermore, the locking drive mechanism includes a motor, a turntable, and a push rod;

[0008] The turntable is rotatably mounted on the cover and coaxial with the cover, and a spiral groove is provided on one side surface of the turntable;

[0009] The push rod and the locking block are respectively arranged in a one-to-one correspondence. The push rod is slidably connected to the cover along the radial direction of the cover. The outer end of the push rod is connected to the corresponding locking block, and the inner end is engaged with the spiral groove.

[0010] The motor is connected to the turntable via a transmission.

[0011] Furthermore, the hanger is rigidly connected to the cover.

[0012] Furthermore, the lower side of the locking groove is a horizontally set plane, and the upper side is an inclined plane that gradually slopes from the outside to the inside. The lower surface of the plug part is also a horizontally set plane, and the upper surface is an inclined plane that slopes downwards, and the slope is the same as the slope of the upper side of the locking groove.

[0013] Furthermore, the locking blocks are evenly arranged circumferentially on the upper surface of the cover.

[0014] Furthermore, there are an even number of locking blocks, and the locking blocks are arranged symmetrically in pairs with respect to the center of the cover.

[0015] Furthermore, a radial guide rail is provided between the locking block and the cover, which slides in cooperation with the locking block.

[0016] The beneficial effects of this utility model are: the pressure vessel cover opening and closing structure of this utility model only requires controlling the lifting control mechanism 5 and the locking drive mechanism 3 when the cover is opened and closed, making the cover opening and closing convenient, saving time and effort, reducing the workload during the cover opening and closing process, and improving work efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 yes Figure 1 Top view;

[0019] Figure 3 This is a schematic diagram of the locking block structure;

[0020] Figure 4 This is a schematic diagram of a locking drive mechanism of this utility model;

[0021] Figure 5 This is a top view of the cover;

[0022] The figure shows: tank body 1, cover body 2, locking drive mechanism 3, hanger 4, lifting control mechanism 5, locking block 7, locking groove 11, guide rail 21, locking cylinder 31, turntable 32, push rod 33, column 41, plug-in part 71, spiral groove 321. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] like Figure 1 , Figure 2 As shown, this utility model discloses a pressure vessel cover opening and closing structure, including a tank body 1, an opening and closing mechanism, and a cover 2 that is disposed inside the tank body 1 and cooperates with the tank body 1. The inner wall of the tank body 1 is provided with an annular locking groove 11 extending circumferentially and located above the cover 2. The opening and closing mechanism includes a hanger 4, a lifting control mechanism 5, a locking drive mechanism 3, and a locking block 7. The hanger 4 is disposed above the cover 2 and connected to the cover 2. The lifting control mechanism 5 is supported and disposed below the hanger 4 to control the opening and closing mechanism. The lifting bracket 4 is raised and lowered. There are at least two locking blocks 7, which are arranged circumferentially on the upper surface of the cover 2. The locking blocks 7 are slidably arranged along the radial direction of the cover 2. The outer end of the locking block 7 is provided with a plug-in part 71 that is inserted into the locking groove 11. The locking drive mechanism is installed on the cover 2 and connected to the locking blocks 7 to drive the locking blocks 7 to slide along the radial direction of the cover 2, thereby causing the plug-in part 71 to be inserted into or removed from the locking groove 11.

[0025] The lifting control mechanism 5 can be a cylinder, hydraulic cylinder, or electric push rod, etc. In this embodiment of the present invention, the lifting control mechanism 5 adopts a hydraulic cylinder. The hanger 4 can be rigidly connected to the cover 2, or it can be flexibly connected to the cover 2 via a rope. In this embodiment of the present invention, the hanger 4 is rigidly connected to the cover, specifically, it is rigidly connected to the cover via a column 41, one end of which is welded to the hanger 4 and the other end of which is bolted to the cover. There can be one or more columns. When there is one column, it is set at the center of the cover; when there are multiple columns, they are arranged around the center of the cover. In order to ensure sealing, the cover generally needs to be provided with an elastic sealing ring that matches the tank. The rigid connection between the hanger 4 and the cover allows the lifting control mechanism 5 to press the cover into place, which makes it easier for the subsequent locking drive mechanism to insert the locking block into the annular locking groove 11.

[0026] like Figure 1As shown, when the pressure vessel lid opening and closing structure of this utility model is opened, the locking drive mechanism 3 is activated. The locking drive mechanism 3 causes the locking block 7 to slide inward along the radial direction of the lid 2, thus allowing the insertion part 71 of the locking block 7 to move out of the locking groove 11, releasing the lid from its locked state. Subsequently, the lifting control mechanism 5 is activated, causing the lifting bracket 4 to rise, thereby removing the lid from the tank 1 and opening the lid. When the lid needs to be closed, the lifting control mechanism 5 is activated, causing the hanger 4 to descend and the lid to be placed inside the tank 1. Then, the locking drive mechanism drives the locking block 7 on the upper surface of the lid to slide outward along the radial direction of the lid 2, thereby inserting the insertion part 71 into the locking groove 11. At this time, the end of the locking block 7 that is not inserted into the locking groove 11 (the inner end) can abut against the lid, blocking the lid and preventing it from moving upward and loosening, thus completing the locking and limiting of the lid. The pressure vessel lid opening and closing structure of this utility model only requires the control of the lifting control mechanism 5 and the locking drive mechanism 3 to open and close the lid, making the lid opening and closing convenient, saving time and effort, reducing the workload during the lid opening and closing process, and improving work efficiency.

[0027] like Figure 4 As shown, in one embodiment, the locking drive mechanism 3 includes a motor, a turntable 32, and a push rod 33 (the motor is not shown in the figure). The turntable 32 is rotatably mounted on the cover 2 and coaxial with the cover 2. One side surface of the turntable 32 is provided with a spiral groove 321. The push rod 33 is correspondingly arranged with the locking block 7. The push rod 33 is slidably connected to the cover 2 in the radial direction. The outer end of the push rod 33 is connected to the corresponding locking block 7, and the inner end engages with the spiral groove. The motor is rotatably connected to the turntable 32. During opening and closing, simply starting the motor and rotating it forward or backward will simultaneously drive the locking block 7 to slide in the radial direction of the cover 2, thereby causing the insertion part 71 to insert into or move out of the locking groove 11. Figure 2 As shown, in another embodiment of this utility model, the locking drive mechanism consists of a plurality of locking cylinders 31 corresponding one-to-one with the locking blocks. When the locking drive mechanism consists of a plurality of locking cylinders 31 corresponding one-to-one with the locking blocks, in order to facilitate the sliding of the locking blocks 7 along the radial direction of the cover 2, a radial guide rail 21 that slides with the locking blocks 7 can be provided between the locking blocks 7 and the cover 2 (see...). Figure 5 The locking drive mechanism consists of multiple locking cylinders 31, each corresponding to one of the locking blocks, which makes it easier to ensure that each locking block 7 is inserted into place when locking the cover.

[0028] In some embodiments, the locking drive mechanism is also a plurality of electric push rods that are arranged one-to-one with the locking blocks.

[0029] The upper and lower sides of the locking groove 11 can both be flat; or both can be inclined; or one side can be flat and the other side can be inclined. The upper and lower sides of the insertion part 71 can also both be flat; or both can be inclined; or one side can be flat and the other side can be inclined. If the upper and lower sides of the locking groove 11 and the upper and lower sides of the insertion part 71 are both flat, in order to facilitate the insertion of the insertion part 71 into the locking groove 11, the height of the insertion part 71 can only be less than the width of the locking groove 11. The insertion part 71 and the locking groove 11 will not form a tight fit, which is not conducive to locking the cover. If both sides of the locking groove 11 and both sides of the insertion part 71 are inclined, and both the insertion part 71 and the locking groove 11 are frustoconical, although it is convenient for the insertion part 71 to be inserted into the locking groove 11 and a tight fit can be formed, the insertion part 71 is also easy to dislodge, which is also not conducive to locking the cover. Therefore, in this invention, preferably, the lower side of the locking groove 11 is a horizontally arranged plane, and the upper side is an inclined surface that gradually slopes from the outside to the inside. The lower surface of the insertion part 71 is also a horizontally arranged plane, and the upper surface is an inclined surface that slopes downwards, with the same slope as the upper side of the locking groove 11. This structure facilitates the insertion of the insertion part 71 into the locking groove 11, forms a tight fit, and makes it relatively difficult for the insertion part 71 to come out.

[0030] In this utility model, in order to improve the stress distribution of the cover, such as Figure 2 As shown, ideally, the locking blocks 7 are evenly distributed circumferentially on the upper surface of the cover 2. Furthermore, there is an even number of locking blocks 7, and each pair of locking blocks 7 is symmetrically arranged with respect to the center of the cover 2. In this embodiment of the invention, there are eight locking blocks 7.

Claims

1. A pressure vessel cover opening and closing structure, characterized in that: It includes a tank (1), an opening and closing mechanism, and a cover (2) that is installed inside the tank (1) and cooperates with the tank (1). The inner wall of the tank (1) is provided with an annular locking groove (11) that extends circumferentially and is located above the cover (2). The opening and closing mechanism includes a hanger (4), a lifting control mechanism (5), a locking drive mechanism (3), and a locking block (7). The hanger (4) is located above the cover (2) and connected to the cover (2). The lifting control mechanism (5) is supported below the hanger (4) to control the lifting of the hanger (4). There are at least two locking blocks (7) arranged circumferentially on the upper surface of the cover (2). The locking blocks (7) slide along the radial direction of the cover (2). The outer end of the locking block (7) is provided with a plug-in part (71) that engages with the locking groove (11). The locking drive mechanism (3) is installed on the cover (2) and connected to the locking block (7) to drive the locking block (7) to slide along the radial direction of the cover (2), thereby causing the plug-in part (71) to be inserted into or removed from the locking groove (11).

2. The pressure vessel cover opening and closing structure as described in claim 1, characterized in that: The locking drive mechanism (3) consists of multiple locking cylinders (31) that are arranged one-to-one with the locking block (7).

3. The pressure vessel cover opening and closing structure as described in claim 1, characterized in that: The locking drive mechanism (3) includes a motor, a turntable (32), and a push rod (33); The turntable (32) is rotatably mounted on the cover (2) and coaxial with the cover (2). A spiral groove (321) is provided on one side surface of the turntable (32). The push rod (33) is provided in a one-to-one correspondence with the locking block (7). The push rod (33) is slidably connected to the cover (2) along the radial direction of the cover (2). The outer end of the push rod (33) is connected to the corresponding locking block (7), and the inner end is engaged with the spiral groove (321). The motor is connected to the turntable (32) via a transmission.

4. The pressure vessel cover opening and closing structure as described in claim 1, characterized in that: The hanger (4) is rigidly connected to the cover (2).

5. A pressure vessel cover opening and closing structure as described in any one of claims 1 to 4, characterized in that: The lower side of the locking groove (11) is a horizontally set plane, and the upper side is an inclined plane that gradually slopes from the outside to the inside. The lower surface of the plug part (71) is also a horizontally set plane, and the upper surface is an inclined plane that slopes downwards, and the slope is the same as the slope of the upper side of the locking groove (11).

6. The pressure vessel cover opening and closing structure as described in claim 1, characterized in that: The locking blocks (7) are evenly arranged circumferentially on the upper surface of the cover (2).

7. A pressure vessel cover opening and closing structure as described in claim 1 or 6, characterized in that: There are an even number of locking blocks (7), and the locking blocks (7) are arranged symmetrically in pairs with respect to the center of the cover (2).

8. The pressure vessel cover opening and closing structure as described in claim 2, characterized in that: A radial guide rail (21) is provided between the locking block (7) and the cover (2) to slide with the locking block (7).

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