Support collar structure for cryogenic pressure vessels

Abstract

The utility model provides a support collar structure for low temperature pressure container relates to pressure container auxiliary component technical field, the utility model discloses outer ring and inner ring, the inner wall of outer ring is fixedly connected with the outside of inner ring, the outer surface of inner ring is provided with a plurality of auxiliary devices, the auxiliary device includes arc plate, one end fixedly connected with two round poles of arc plate, the inner wall one side of outer ring is fixedly connected with a plurality of cylinder, the utility model discloses setting up auxiliary device, when installing the inner and outer liner of low temperature pressure container by support collar structure, by welding outer ring in the inner wall of outer liner, welding the inner liner with the one side of each arc plate, when the inner liner is deformed due to thermal expansion and cold shrink, by the movement of arc plate and the deformation force of spring, arc plate and inner liner can move in small amplitude relative to the between outer ring and inner ring, as far as possible avoid when long -term use, the inner ring is directly subjected to the deformation force and produces the fracture deformation influence normal use.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure vessel auxiliary component technical field especially relates to the support ring structure for low temperature pressure vessel. BACKGROUND

[0002] The low temperature pressure vessel refers to the carbon steel, low alloy steel, duplex stainless steel and ferrite stainless steel container whose design temperature is below -20 DEG C, and the austenitic stainless steel container whose design temperature is below -196 DEG C, and the support ring structure is used between the pressure vessel inner container and outer container.

[0003] When the low temperature liquefied gas is filled in the pressure container, the metal of the inner container will expand and contract, and the support ring structure supporting the inner container will be subjected to certain force, and the surface structure will be deformed when being subjected to force, which affects the stability of the support to the inner container. UTILITY MODEL CONTENTS

[0004] The utility model discloses a support ring structure for low temperature pressure vessel, which solves the problem that when the low temperature liquefied gas is filled in the pressure container, the metal of the inner container will expand and contract, and the support ring structure supporting the inner container will be subjected to certain force, and the surface structure will be deformed when being subjected to force, which affects the stability of the support to the inner container.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the support ring structure for low temperature pressure vessel, including the outer ring and the inner ring, the inner wall of the outer ring is fixedly connected with the outside of the inner ring, the outer surface of the inner ring is provided with a plurality of auxiliary devices, the auxiliary device includes the arc plate, the outer surface of the inner ring is provided with a plurality of grooves, the arc plate is located in the inside of the groove, one end of the arc plate is fixedly connected with two round rods, the outer surface of the round rod is slid in the inner wall of the inner ring, one side of the inner wall of the outer ring is fixedly connected with a plurality of cylinders, the outer surface of the round rod is slid in the inner wall of the cylinder, one end of the round rod is provided with the spring, the both ends of the spring are fixedly connected with one end of the round rod and one end of the inner wall of the cylinder respectively.

[0006] The effect of the above-mentioned components is that: by setting the arc plate, when the inner container and the shell of the pressure container are welded by the support ring structure, the outside of the outer ring is welded to the inner wall of the shell, and the outer surface of the inner container is welded to one side of each arc plate, if the inner container deforms due to thermal expansion and cold contraction during the use of the pressure container, the arc plate on the deformed side of the inner container will move in the groove, the two round rods at one end of the arc plate will slide in the inner wall of the cylinder to lengthen or compress the spring, which adapts to the deformation of the inner container, and when the inner container returns to the original state, the spring restores the original state to pull or push the arc plate to move back to the original position.

[0007] Preferably, the outer diameter of the spring is slightly smaller than the inner diameter of the cylinder.

[0008] The effect achieved by the above component is that the outer surface of the spring is reinforced by the cylinder, and the lateral distortion of the spring when deformed is avoided as much as possible to affect normal use.

[0009] Preferably, the outer surface of the cylinder is fixedly connected with two inclined rods, and the ends of the inclined rods away from the cylinder are fixedly connected with the inner wall of the outer ring.

[0010] The effect achieved by the above component is that the connection between the cylinder and the outer ring is reinforced by the inclined rods, and the connection between the cylinder and the outer ring is broken by the inclined force when the round rod moves in the cylinder.

[0011] Preferably, the inner wall of the groove is fixedly connected with two grommets, the round rod slides in the inner wall of the grommet, and the grommet is made of rubber.

[0012] The effect achieved by the above component is that when the arc-shaped plate moves to the maximum distance in the groove, it will contact the rubber grommet on the inner wall of the groove, and the movement of the arc-shaped plate is further buffered by the grommet, improving the effect of the auxiliary device.

[0013] Preferably, one side of the arc-shaped plate is fixedly connected with a positioning rod, and the positioning rod slides in the inner wall of the inner ring.

[0014] The effect achieved by the above component is that when the arc-shaped plate moves, the positioning rod slides in the inner wall of the inner ring, and the angle between the arc-shaped plate and the inner ring is further limited by the positioning rod, so that the angle of the arc-shaped plate is as much as possible. Avoid skewing when moving.

[0015] Preferably, the upper and lower edges of the inner ring are arc-shaped, and the upper and lower edges of the arc-shaped plate are arc-shaped.

[0016] The effect achieved by the above component is that the upper and lower edges of the inner ring and the arc-shaped plate are arc-shaped, so that the contact between the inner container and the edges of the inner ring or the arc-shaped plate when the inner container deforms and moves does not easily cause wear on the surface of the inner container.

[0017] Preferably, the outer surface of the outer ring is provided with two groups of positioning devices, the positioning devices include U-shaped blocks, the two sides of the outer ring are provided with rectangular grooves, the U-shaped blocks slide in the inner walls of the rectangular grooves, and the inner wall of the U-shaped block is threadedly connected with a bolt.

[0018] The effect achieved by the components is that when the outer ring is welded with the inner wall of the pressure container shell, the outer ring is placed in the designated position, the U-shaped block is pushed to move in the inner wall of the rectangular groove, the two ends of the U-shaped block are abutted against the inner wall of the outer ring, then the bolt is rotated to move downward in the inner wall of the sliding rod, the bottom end of the bolt is pressed against the outer surface of the outer ring, the position of the U-shaped block on the outer surface of the outer ring and the position between the outer ring and the pressure container shell are positioned, and the outer ring is convenient to weld.

[0019] Preferably, the inner part of the outer ring is provided with two positioning holes, and one side of the U-shaped block is fixedly connected with a sliding rod which slides in the inner wall of the positioning hole.

[0020] The effect achieved by the components is that when the U-shaped block is pushed to move in the rectangular groove, the sliding rod slides in the inner wall of the positioning hole, the angle between the U-shaped block and the outer ring is further limited, and the angle of the two ends of the U-shaped block is as small as possible.

[0021] Compared with the prior art, the utility model has the advantages and positive effects that:

[0022] In the utility model, when the inner and outer shells of the low-temperature pressure container are installed by means of the supporting sleeve ring structure, the outer ring is welded on the inner wall of the outer shell, and the inner shell is welded with one side of each arc-shaped plate, so that when the inner shell is deformed due to thermal expansion and cold contraction, the arc-shaped plate and the inner shell can move a small range relative to the outer ring and the inner ring through the movement of the arc-shaped plate and the deformation force of the spring, and the inner ring is prevented from being directly affected by the deformation force to cause fracture deformation and affect normal use. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0024] Figure 2 It is a three-dimensional structure schematic view of the outer ring of the utility model;

[0025] Figure 3 It is a three-dimensional structure schematic view of the inner ring of the utility model;

[0026] Figure 4 It is a three-dimensional structure schematic view of the arc-shaped plate of the utility model;

[0027] Figure 5 It is a three-dimensional structure schematic view of the U-shaped block of the utility model.

[0028] Legend: 1. Outer ring; 2. Auxiliary device; 3. Positioning device; 4. Inner ring; 21. Groove; 22. Arc plate; 23. Round rod; 24. Spring; 25. Cylinder; 26. Diagonal rod; 27. Washer ring; 28. Positioning rod; 31. Rectangular groove; 32. Sliding rod; 33. U-shaped block; 34. Bolt; 35. Positioning hole. Detailed Implementation

[0029] Example 1, as Figures 1-4 As shown, the support ring structure for a cryogenic pressure vessel includes an outer ring 1 and an inner ring 4. The inner wall of the outer ring 1 is fixedly connected to the outer side of the inner ring 4. Several auxiliary devices 2 are provided on the outer surface of the inner ring 4. Each auxiliary device 2 includes an arc-shaped plate 22. Several grooves 21 are formed on the outer surface of the inner ring 4. The arc-shaped plate 22 is located inside the grooves 21. Two round rods 23 are fixedly connected to one end of the arc-shaped plate 22. The outer surfaces of the round rods 23 slide on the inner wall of the inner ring 4. Several cylinders 25 are fixedly connected to one side of the inner wall of the outer ring 1. The outer surfaces of the round rods 23 slide on the inner wall of the cylinders 25. A spring 24 is provided at one end of each round rod 23. The two ends of the spring 24 are fixedly connected to one end of the round rod 23 and one end of the inner wall of the cylinder 25, respectively. By using the arc-shaped plate 22, when welding the inner liner of the pressure vessel to the outer shell using the support ring structure, the outer side of the outer ring 1 is pressed against the inner wall of the outer shell for welding, thus connecting the outer surface of the inner liner to each arc-shaped plate 25. Welding is performed on one side of plate 22. During the use of the pressure vessel, if the inner liner deforms due to thermal expansion and contraction, the arc plate 22 on the deformed side of the inner liner will move inside the groove 21, causing the two round rods 23 at one end of the arc plate 22 to slide and stretch or compress the spring 24 on the inner wall of the cylinder 25 to adapt to the deformation of the inner liner. After the inner liner returns to its original shape, the spring 24 will pull or push the arc plate 22 back to its original position. By setting the auxiliary device 2, when installing the inner and outer liner of the low-temperature pressure vessel with the help of the support ring structure, the outer ring 1 is welded to the inner wall of the outer liner, and the inner liner is welded to one side of each arc plate 22. When the inner liner deforms due to thermal expansion and contraction, the movement of the arc plate 22 and the deformation force of the spring 24 allow the arc plate 22 and the inner liner to move slightly relative to the outer ring 1 and the inner ring 4, so as to avoid the inner ring 4 being directly subjected to deformation force and breaking deformation during long-term use, which would affect normal use.

[0030] Reference Figures 2-4As shown, in the embodiment: the outer diameter of the spring 24 is slightly smaller than the inner diameter of the cylinder 25, the outer surface of the spring 24 is reinforced by the cylinder 25, and the transverse distortion of the spring 24 when deformed is avoided as much as possible to affect normal use, the outer surface of the cylinder 25 is fixedly connected with two inclined rods 26, and the end of the inclined rod 26 away from the cylinder 25 is fixedly connected with the inner wall of the outer ring 1. The connection between the cylinder 25 and the outer ring 1 is reinforced by the inclined rod 26, and the connection between the cylinder 25 and the outer ring 1 is broken by the inclined rod 26. The inclined rod 26 is moved inside the cylinder 25 to avoid the inclined force.

[0031] Referring to Figures 2-4 As shown, in the embodiment: the inner wall of the groove 21 is fixedly connected with two grommets 27, the circular rod 23 slides in the inner wall of the grommet 27, the grommet 27 is made of rubber, and the arc-shaped plate 22 is in contact with the rubber grommet 27 on the inner wall of the groove 21 when it moves to the maximum distance inside the groove 21. The movement of the arc-shaped plate 22 is further buffered by the grommet 27, the effect of the auxiliary device 2 is improved, one side of the arc-shaped plate 22 is fixedly connected with a positioning rod 28, the positioning rod 28 slides in the inner wall of the inner ring 4, and the positioning rod 28 slides in the inner wall of the inner ring 4 when the arc-shaped plate 22 moves. The angle between the arc-shaped plate 22 and the inner ring 4 is further limited by the positioning rod 28, and the angle of the arc-shaped plate 22 is as much as possible to avoid the angle of the arc-shaped plate 22 when moving. The upper and lower edges of the inner ring 4 are arc-shaped, the upper and lower edges of the arc-shaped plate 22 are arc-shaped, and the upper and lower edges of the inner ring 4 and the arc-shaped plate 22 are arc-shaped. When the inner container is deformed and moves, the edges of the inner ring 4 or the arc-shaped plate 22 are not easy to cause wear on the surface of the inner container.

[0032] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, in the embodiment: the outer surface of the outer ring 1 is provided with two sets of positioning devices 3, the positioning devices 3 include U-shaped blocks 33, two sides of the outer ring 1 are provided with rectangular grooves 31, the U-shaped blocks 33 slide on the inner walls of the rectangular grooves 31, one end of the inner wall of the U-shaped blocks 33 is threadedly connected with a bolt 34, when welding the outer ring 1 and the inner wall of the pressure container shell, the outer ring 1 is placed at the specified position, the U-shaped blocks 33 on both sides of the outer ring 1 can be pushed to move on the inner walls of the rectangular grooves 31 to abut the two ends of the U-shaped blocks 33 against the inner wall of the outer ring 1, then the bolt 34 is rotated to move downward on the inner wall of the sliding rod 32 to press the bottom end of the bolt 34 against the outer surface of the outer ring 1, the position of the U-shaped blocks 33 on the outer surface of the outer ring 1 and the position between the outer ring 1 and the pressure container shell are positioned, which is convenient for welding the outer ring 1, the inside of the outer ring 1 is provided with two positioning holes 35, one side of the U-shaped block 33 is fixedly connected with a sliding rod 32, the sliding rod 32 slides on the inner wall of the positioning hole 35, when the U-shaped block 33 is pushed to move inside the rectangular groove 31, the sliding rod 32 will slide on the inner wall of the positioning hole 35, which further limits the angle between the U-shaped block 33 and the outer ring 1, and the angle of the two ends of the U-shaped block 33 is as small as possible.

[0033] Working principle: when the inner container and the shell of the pressure container are welded by means of the support collar structure, the outer side of the outer ring 1 is abutted against the inner wall of the shell, the U-shaped blocks 33 on both sides of the outer ring 1 are pushed to move on the inner walls of the rectangular grooves 31 to abut the two ends of the U-shaped blocks 33 against the inner wall of the outer ring 1, then the bolt 34 is rotated to move downward on the inner wall of the sliding rod 32 to press the bottom end of the bolt 34 against the outer surface of the outer ring 1, the position of the U-shaped blocks 33 on the outer surface of the outer ring 1 and the position between the outer ring 1 and the pressure container shell are positioned, then the outer ring 1 and the pressure container shell are welded, after the welding is completed, the outer surface of the inner container and one side of each arc-shaped plate 22 are welded, if the inner container deforms due to thermal expansion and cold contraction during the use of the pressure container, the arc-shaped plate 22 on the deformed side of the inner container will move inside the groove 21, the two round rods 23 at one end of the arc-shaped plate 22 will slide on the inner wall of the cylinder 25 to stretch or compress the spring 24, which adapts to the deformation of the inner container, after the inner container returns to the original state, the spring 24 restores the original state to pull or push the arc-shaped plate 22 to move back to the original position.

[0034] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and alteration of the above embodiments without departing from the technical content of the present application, according to the technical essence of the present application, still belong to the protection scope of the present application. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be connected inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. Support collar structure for cryogenic pressure vessels, comprising an outer ring (1) and an inner ring (4), characterised in that: The inner wall of the outer ring (1) is fixedly connected with the outer side of the inner ring (4), the outer surface of the inner ring (4) is provided with a plurality of auxiliary devices (2), the auxiliary device (2) comprises an arc plate (22), the outer surface of the inner ring (4) is provided with a plurality of grooves (21), the arc plate (22) is located in the groove (21), one end of the arc plate (22) is fixedly connected with two round rods (23), the outer surface of the round rod (23) slides on the inner wall of the inner ring (4), one side of the inner wall of the outer ring (1) is fixedly connected with a plurality of cylinders (25), the outer surface of the round rod (23) slides on the inner wall of the cylinder (25), one end of the round rod (23) is provided with a spring (24), and both ends of the spring (24) are fixedly connected with one end of the round rod (23) and one end of the inner wall of the cylinder (25).

2. The support collar structure for cryogenic pressure vessels of claim 1, characterized by: The outer diameter of the spring (24) is slightly smaller than the inner diameter of the cylinder (25).

3. The support collar structure for cryogenic pressure vessels of claim 2, wherein: The outer surface of the cylinder (25) is fixedly connected with two inclined rods (26), and one end, away from the cylinder (25), of the inclined rod (26) is fixedly connected with the inner wall of the outer ring (1).

4. The support collar structure for cryogenic pressure vessels of claim 3, wherein: The inner wall of the groove (21) is fixedly connected with two grommets (27), and the round rod (23) slides on the inner wall of the grommet (27).

5. The support collar structure for cryogenic pressure vessels of claim 4, wherein: One side of the arc plate (22) is fixedly connected with a positioning rod (28), and the positioning rod (28) slides on the inner wall of the inner ring (4).

6. The support collar structure for cryogenic pressure vessels of claim 5, characterized in that: The upper and lower edges of the inner ring (4) are arc-shaped, and the upper and lower edges of the arc plate (22) are arc-shaped.

7. The support collar structure for cryogenic pressure vessels of claim 6, characterized in that: The outer surface of the outer ring (1) is provided with two groups of positioning devices (3), the positioning device (3) comprises a U-shaped block (33), two sides of the outer ring (1) are provided with a rectangular groove (31), the U-shaped block (33) slides on the inner wall of the rectangular groove (31), and the inner wall of the U-shaped block (33) is threadedly connected with a bolt (34) at one end.

8. The support collar structure for cryogenic pressure vessels of claim 7, characterized in that: The inner part of the outer ring (1) is provided with two positioning holes (35), one side of the U-shaped block (33) is fixedly connected with a sliding rod (32), and the sliding rod (32) slides on the inner wall of the positioning hole (35).

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