Low ferrite content self locking head for cryogenic vessels

Abstract

The utility model discloses a low ferrite content self locking seal head for low temperature container, including the seal head body, the jar body of jointing in the bottom end of seal head body and the self locking component of being established between seal head body and jar body, the lower bottom of seal head body is equipped with the sealing boss, the self locking component includes several distribution on the lock hook of seal head body outside wall and several distribution on the lock post of jar body outside wall, every lock hook is through the connecting column and is rotated with seal head body jointing, is equipped with the locking groove on the lock hook, and the wedge shape guide portion is equipped with in the bottom of lock hook, is equipped with the limit block of jointing with the inner wall of lock hook on the connecting column, and the limit spring of butt joint with the inner wall of lock hook is connected on the limit block, the utility model discloses through with jar body of seal head body activity hinged, and utilize pneumatic push rod control seal head body and jar body's separation and butt joint, utilize self locking component to realize seal head body and jar body's self locking, has improved the connection reliability between seal head body and jar body, is suitable for widely using.

Description

Technical Field

[0001] This utility model relates to the field of end cap technology, specifically to a low-ferrite-content self-locking end cap for cryogenic containers. Background Technology

[0002] End caps are essential components in pressure vessels used in many industries, from petrochemicals and nuclear energy to food and pharmaceuticals. They are the end caps of pressure vessels and a major pressure-bearing component. Low-ferrite end caps are those manufactured by controlling the ferrite content to maintain a low level. By controlling the ferrite content, the corrosion resistance and oxidation resistance of the end cap are improved, thereby ensuring the reliability of the connection between the end cap and the vessel.

[0003] In existing technologies, end caps often fail to be fixed or have poor tightening performance during assembly, which reduces the quality and service life of the end caps. The pre-tightening operation for sealing between the end cap and the container requires manual opening and closing of the buckles and tightening of the bolts, which is not only inconvenient to operate, but also makes the buckles prone to aging and failure after long-term use. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a low-ferrite-content self-locking end cap for cryogenic containers.

[0005] The technical solution of this utility model is: a low ferrite content self-locking head for a low temperature container, including a head body, a tank body that is movably locked at the bottom of the head body, and a self-locking component disposed between the head body and the tank body; one side of the head body is movably hinged to the side wall of the tank body, and a sealing boss that can be movably locked with the upper opening of the tank body is provided on the bottom surface of the head body.

[0006] The self-locking component includes several locking hooks equidistantly distributed around the outer wall of the head body and several locking pins equidistantly distributed on the outer wall of the tank body, each corresponding to the upper and lower positions of the locking hooks. Each locking hook is rotatably engaged with the outer wall of the head body via a connecting pin. The locking hook is provided with a locking groove that can be movably engaged with the locking pin at the corresponding position, and a wedge-shaped guide is provided at the bottom end of the locking hook. The connecting pin is provided with a limiting block that engages with the inner wall of the locking hook, and a limiting spring that abuts against the inner wall of the locking hook is connected to the limiting block.

[0007] Furthermore, the sealing boss is slidably engaged with the bottom surface of the head body, a compression spring is provided between the sealing boss and the head body, and a sealing ring is sleeved on the outside of the sealing boss;

[0008] Note: When the end cap body is engaged with the tank body by the self-locking component, the sealing boss is always close to the tank body under the action of the compression spring, and the sealing ring further enhances the sealing performance of the tank body.

[0009] Furthermore, a pneumatic push rod is movably hinged to the side wall of the tank on the other side of the head body;

[0010] Note: The addition of a start-up push rod improves the ease of separation between the end cap body and the tank body.

[0011] Furthermore, a linkage ring is rotatably engaged on the upper end face of the tank body, and each locking pin is fixedly connected to the linkage ring and rotatably engaged with the tank body; a locking block is provided inside the tank body that slides and engages with the inner wall of the linkage ring, and a damping spring that abuts against the inner wall of the linkage ring is connected to the locking block; a release pin that penetrates the tank body and slides and engages with the tank body is provided on the outer wall of the linkage ring.

[0012] Note: When it is necessary to separate the locking pin from the locking hook, move the release pin to make the linkage ring rotate inside the tank, and make the locking pin disengage from the locking groove on the corresponding locking hook, which helps to improve the ease of use of the self-locking component.

[0013] Furthermore, each locking pin is rotatably engaged with a follower sleeve on its exterior;

[0014] Note: When the lock hook disengages from the lock pin, the action of the follower sleeve helps to reduce the friction between the lock pin and the lock hook, thereby improving the ease of the lock hook disengaging from the lock pin.

[0015] The working principle of this utility model is as follows:

[0016] In use, a pneumatic push rod drives the end cap body to rotate along its hinge point with the tank body, ultimately causing the sealing boss on the end cap body to engage with the top of the tank body. Simultaneously, as the end cap body moves, the wedge-shaped guide on the locking hook contacts the corresponding locking pin. At this point, the locking hook rotates on the connecting pin and compresses the limiting spring. When the locking groove on the locking hook is flush with the locking pin, the locking hook rotates under the action of the limiting spring, causing the locking groove to engage with the locking pin, thus achieving self-locking of the end cap body. When it is necessary to open the end cap body, the release pin is moved, causing the linkage ring to rotate inside the tank body, disengaging the locking pin from the locking groove on the corresponding locking hook. Finally, the push rod is used to push the end cap body to rotate along its hinge point with the tank body.

[0017] Compared with the prior art, the beneficial effects of this utility model are reflected in the following aspects:

[0018] First, the structure of this utility model is reasonably designed. The locking hook automatically engages with the locking post under the action of the limiting spring, realizing the self-locking and fixing of the end cap body. At the same time, the sealing boss always stays close to the tank body under the action of the compression spring, and further improves the sealing effect of the low temperature container under the action of the sealing ring.

[0019] Secondly, by hingedly connecting the end cap body to the tank body and using a pneumatic push rod to control the separation and docking of the end cap body and the tank body, this utility model can improve the reliability of the connection between the end cap body and the tank body and improve the safety of the use of the cryogenic container.

[0020] Third, this utility model utilizes a linkage ring to drive each locking pin to slide simultaneously on the tank body and disengage from the corresponding locking hook, which helps to improve the ease of operation when separating the end cap body from the tank body, thereby improving work efficiency. Attached Figure Description

[0021] Figure 1 This is a longitudinal sectional view of the present invention;

[0022] Figure 2 This is the front view of this utility model;

[0023] Figure 3 This is a diagram showing the distribution of the locking hooks of this utility model on the end cap body;

[0024] Figure 4 This is a schematic diagram of the connection between the locking hook and the connecting post of this utility model;

[0025] Figure 5 This is a schematic diagram of the connection between the linkage ring and the tank body of this utility model;

[0026] Figure 6 This is a utility model Figure 5 A magnified view of a portion of point A in the middle;

[0027] Among them, 1-head body, 10-sealing boss, 11-compression spring, 12-sealing ring, 13-pneumatic push rod, 2-tank body, 3-self-locking component, 30-locking hook, 300-locking groove, 301-wedge guide, 31-locking post, 310-follower sleeve, 32-connecting post, 320-limiting block, 321-limiting spring, 33-linkage ring, 330-locking block, 331-damping spring, 332-release post. Detailed Implementation

[0028] Example 1

[0029] like Figure 1 , 2 The self-locking end cap with low ferrite content for cryogenic containers shown includes an end cap body 1, a tank body 2 that is movably latched to the bottom end of the end cap body 1, and a self-locking component 3 disposed between the end cap body 1 and the tank body 2; one side of the end cap body 1 is movably hinged to the side wall of the tank body 2, and a sealing boss 10 that can be movably latched to the upper opening of the tank body 2 is provided on the bottom surface of the end cap body 1.

[0030] like Figure 2 , 3As shown in Figure 4, the self-locking component 3 includes four locking hooks 30 equidistantly distributed around the outer wall of the head body 1 and four locking pins 31 equidistantly distributed on the outer wall of the tank body 2, each corresponding to the upper and lower positions of the locking hooks 30. Each locking hook 30 is rotatably engaged with the outer wall of the head body 1 via a connecting pin 32. The locking hook 30 is provided with a locking groove 300 that can be movably engaged with the locking pin 31 at the corresponding position, and a wedge-shaped guide part 301 is provided at the bottom end of the locking hook 30. The connecting pin 32 is provided with a limiting block 320 that engages with the inner wall of the locking hook 30, and a limiting spring 321 that abuts against the inner wall of the locking hook 30 is connected to the limiting block 320.

[0031] Example 2

[0032] The difference between this embodiment and Embodiment 1 is that:

[0033] like Figure 1 , 3 As shown, the sealing boss 10 is slidably engaged with the bottom surface of the head body 1. A compression spring 11 is provided between the sealing boss 10 and the head body 1. A sealing ring 12 is sleeved on the outside of the sealing boss 10. A pneumatic push rod 13 is movably hinged to the side wall of the tank body 2 on the other side of the head body 1. When the head body 1 is engaged with the tank body 2 under the action of the self-locking component 3, the sealing boss 10 is always close to the tank body 2 under the action of the compression spring 11. At the same time, the sealing performance of the tank body 2 is further enhanced under the action of the sealing ring 12.

[0034] Example 3

[0035] The difference between this embodiment and Embodiment 2 is that:

[0036] like Figure 5 , 6 As shown, a linkage ring 33 is rotatably engaged with the upper end face of the tank body 2. Each locking pin 31 is fixedly connected to the linkage ring 33 and is rotatably engaged with the tank body 2. A locking block 330 is provided inside the tank body 2, which is slidably engaged with the inner wall of the linkage ring 33. A damping spring 331 is connected to the locking block 330 and abuts against the inner wall of the linkage ring 33. A release pin 332 is provided on the outer wall of the linkage ring 33, which penetrates the tank body 2 and is slidably engaged with the tank body 2. Each locking pin 31 is rotatably engaged with a follower sleeve 310. When it is necessary to separate the locking pin 31 from the locking hook 30, the release pin 332 is moved, causing the linkage ring 33 to rotate inside the tank body 2 and causing the locking pin 31 to disengage from the locking groove on the corresponding locking hook 30.

[0037] It should be noted that the pneumatic push rod 13 used in this utility model adopts existing technology and is not specifically limited here. Appropriate products can be selected according to actual needs.

Claims

1. A low-ferrite-content self-locking end cap for cryogenic containers, characterized in that, It includes a head body (1), a tank body (2) that is movably engaged with the bottom end of the head body (1), and a self-locking component (3) disposed between the head body (1) and the tank body (2); one side of the head body (1) is movably hinged to the side wall of the tank body (2), and a sealing boss (10) that can be movably engaged with the upper opening of the tank body (2) is provided on the bottom surface of the head body (1); The self-locking component (3) includes several locking hooks (30) equidistantly distributed around the outer wall of the head body (1) and several locking pins (31) equidistantly distributed on the outer wall of the tank body (2) and corresponding one-to-one with the upper and lower positions of each locking hook (30); each locking hook (30) is rotatably engaged with the outer wall of the head body (1) through a connecting pin (32); the locking hook (30) is provided with a locking groove (300) that can be movably engaged with the locking pin (31) at the corresponding position, and the bottom end of the locking hook (30) is provided with a wedge-shaped guide (301); the connecting pin (32) is provided with a limiting block (320) that engages with the inner wall of the locking hook (30), and the limiting block (320) is connected with a limiting spring (321) that abuts against the inner wall of the locking hook (30).

2. The low-ferrite-content self-locking end cap for cryogenic containers according to claim 1, characterized in that, The sealing boss (10) is slidably engaged with the bottom surface of the head body (1), and a compression spring (11) is provided between the sealing boss (10) and the head body (1). A sealing ring (12) is sleeved on the outside of the sealing boss (10).

3. The low-ferrite-content self-locking end cap for cryogenic containers according to claim 1, characterized in that, The other side of the head body (1) is movably hinged to a pneumatic push rod (13) that is movably hinged to the side wall of the tank body (2).

4. A low-ferrite-content self-locking end cap for cryogenic containers according to claim 1, characterized in that, The upper inner surface of the tank (2) is rotatably engaged with a linkage ring (33), and each locking pin (31) is fixedly connected to the linkage ring (33) and rotatably engaged with the tank (2). The tank (2) is provided with a locking block (330) that slides and engages with the inner wall of the linkage ring (33). A damping spring (331) that abuts against the inner wall of the linkage ring (33) is connected to the locking block (330). A release pin (332) that penetrates the tank (2) and slides and engages with the tank (2) is provided on the outer wall of the linkage ring (33).

5. A low-ferrite-content self-locking end cap for cryogenic containers according to claim 4, characterized in that, Each of the aforementioned locking pins (31) is rotatably engaged with a follower sleeve (310).

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