Supporting structure of medium-volume horizontal cryogenic pressure vessel

Abstract

The utility model discloses a supporting structure of a middle-volume horizontal type cryogenic pressure container, and relates to the technical field of horizontal type cryogenic pressure containers. The container comprises a container body, a front supporting mechanism, a rear supporting mechanism and a group of axial limiting mechanisms, the container body comprises an inner container body and an outer tank body, and the front supporting mechanism is fixed at the axis of a moving end between the inner container body and the outer tank body. The glass fiber reinforced plastic structure is used as a front support, the four-point sling structure is used as a front support, and the axial limiting devices are additionally arranged on the left side and the right side of the fixed end respectively, so that the supporting effect can be effectively achieved between the outer tank supporting sleeve and the inner container supporting sleeve, and heat leakage of the inner tank supporting sleeve and the outer tank supporting sleeve can be reduced; meanwhile, heat leakage of the inner tank support and the outer tank support can be further reduced by adjusting the length and the width of the hanging belt, the requirement for thermal expansion and cold contraction of the movable end is met while the supporting strength is guaranteed, and overlarge temperature difference stress is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of horizontal cryogenic pressure vessels, in particular to a supporting structure of a medium-sized horizontal cryogenic pressure vessel. Background Art

[0002] Cryogenic pressure vessels are mainly used to store refrigerated liquefied gases (critical temperature below -50°C). Their structure consists of an outer tank, an inner container, a piping system, etc. The outer tank and the inner container are connected by a supporting structure to form a stable and reliable overall structure. Since the temperature of the stored cryogenic medium is very low, it will continuously absorb heat from the external environment during use, causing the saturation of the cryogenic medium in the tank to increase. The increase in saturation is not conducive to the long-term storage of the medium (such as the start-up discharge of the safety valve).

[0003] Therefore, in the design of cryogenic pressure vessels, the design of the support structure between the outer tank and the inner container is particularly important, as it has an important impact on the cold preservation performance of the cryogenic pressure vessel. At present, the most commonly used support structure for medium-sized horizontal cryogenic pressure vessels in the industry is the eight-point fiberglass support. Since this structure uses non-metal as the supporting material, the heat leakage is relatively small. However, due to the limitation of the interlayer space, it is inevitable to open support holes on the outer shell and weld reinforcement plates, and the overall aesthetics is poor. Utility Model Content

[0004] The purpose of the utility model is to provide a support structure for a medium-sized horizontal cryogenic pressure vessel, which uses a glass fiber reinforced plastic structure as a front support and a four-point sling structure as a front support, and at the same time, an axial limit device is added to the left and right of the fixed end, which can not only effectively play a supporting role between the outer tank support sleeve and the inner container support sleeve, but also reduce the heat leakage of the inner and outer tank supports. At the same time, the heat leakage of the inner and outer tank supports can be further reduced by adjusting the length and width of the sling, and the thermal expansion and contraction requirements of the mobile end are met while ensuring the support strength, avoiding the generation of excessive temperature difference stress.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a support structure of a medium-sized horizontal cryogenic pressure vessel, comprising a vessel body, a front support mechanism, a rear support mechanism and a set of axial limit mechanisms, wherein the vessel body comprises an inner tank body and an outer tank body;

[0007] The front support mechanism is fixed at the axis center of the moving end between the inner tank body and the outer tank body, and the front support mechanism is a glass fiber reinforced plastic support structure;

[0008] The rear support mechanism includes an angle steel ring, two upper slings and two lower slings;

[0009] The angle steel ring is fixed to the inner wall of the fixed end of the outer tank body, and a clearance gap is formed between the inner side of the angle steel ring and the inner tank body;

[0010] One end of the two upper slings and the two lower slings are fixed to the angle steel ring, and the other ends of the two upper slings and the two lower slings are fixed to the end surface of the inner liner body through a reinforcing plate;

[0011] The axial limiting mechanism comprises a limiting rod, one end of which is fixed to the angle steel ring, and the other end of which is fixed to the peripheral side surface of the inner tank body through a connecting seat;

[0012] The two axial limiting mechanisms are symmetrically arranged on opposite sides of the peripheral side of the inner tank body, and the connecting line between the two axial limiting mechanisms is parallel to the ground;

[0013] The two upper suspension belts are parallel to each other and are both arranged above the center line of the container body, and the connecting line between the upper suspension belt and the two axial limiting mechanisms is vertically distributed;

[0014] The two lower slings are arranged in an eight-shaped shape below the center line of the container body.

[0015] Furthermore, the front support mechanism includes an inner tube and an outer tube, which are respectively fixed to the outer wall of the inner liner body and the inner wall of the outer tank body through reinforcing plates, and the inner tube passes through the outer tube and is fixed with a fiberglass part, which is slidably matched with the outer tube.

[0016] Furthermore, a limiting ring is provided on the inner side of one end of the outer tube close to the inner tank body, the inner tube and the limiting ring are slidably matched, and a through opening is opened on the peripheral side of the inner tube, and the through opening is located outside the outer tube.

[0017] Furthermore, a porous insulation blanket is provided at one end of the outer tube close to the outer tank body and at one end of the inner tube close to the inner tank body, and the through opening on the inner tube is misaligned with the porous insulation blanket.

[0018] Furthermore, the end of the limiting rod passes through the angle steel ring and is connected to a threaded gland, and the limiting rod is fixed to the angle steel ring through the threaded gland.

[0019] Furthermore, the angle between the lower sling and the line connecting the two axial limiting mechanisms is set to 35 degrees.

[0020] The utility model has the following beneficial effects:

[0021] The utility model uses a glass fiber reinforced plastic structure as a front support and a four-point sling structure as a front support, and at the same time, an axial limit device is added to the left and right of the fixed end, and fully utilizes the characteristics of high tensile strength and low thermal conductivity of the epoxy glass fiber reinforced plastic pipe at low temperatures, which can not only effectively play a supporting role between the outer tank support sleeve and the inner container support sleeve, but also reduce the heat leakage of the inner and outer tank supports. At the same time, the heat leakage of the inner and outer tank supports can be further reduced by adjusting the length and width of the sling. The structure also fully utilizes the low-temperature toughness of stainless steel, and while ensuring the support strength, it also meets the thermal expansion and contraction requirements of the mobile end, avoiding the generation of excessive temperature difference stress.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the structure of the inner tank body, the outer tank body and the front support mechanism of the utility model after half of them are cut off;

[0025] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0026] Figure 3 It is a structural schematic diagram of the rear support mechanism and two axial limit mechanisms;

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1-front support mechanism, 2-rear support mechanism, 3-inner tank body, 4-outer tank body, 5-axial limiting mechanism, 101-inner tube, 102-outer tube, 103-glass fiber reinforced plastic part, 104-limiting ring, 105-through port, 106-porous insulation blanket, 201-angle steel ring, 202-upper sling, 203-lower sling, 501-limiting rod, 502-connecting seat, 503-threaded gland. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-3 As shown, the utility model is a support structure of a medium-sized horizontal cryogenic pressure vessel, comprising a vessel body, a front support mechanism 1, a rear support mechanism 2 and a set of axial limit mechanisms 5, wherein the vessel body comprises an inner tank body 3 and an outer tank body 4;

[0031] The front support mechanism 1 is fixed at the axis center of the moving end between the inner tank body 3 and the outer tank body 4, and the front support mechanism 1 is a glass fiber reinforced plastic support structure;

[0032] The rear support mechanism 2 includes an angle steel ring 201, two upper slings 202 and two lower slings 203;

[0033] The angle steel ring 201 is fixed to the inner wall of the fixed end of the outer tank body 4, and a gap is formed between the inner side of the angle steel ring 201 and the inner tank body 3;

[0034] One end of the two upper slings 202 and the two lower slings 203 are fixed to the angle steel ring 201, and the other ends of the two upper slings 202 and the two lower slings 203 are fixed to the end surface of the inner liner body 3 through a reinforcing plate;

[0035] The axial limiting mechanism 5 includes a limiting rod 501, one end of which is fixed to the angle steel ring 201, and the other end of which is fixed to the side surface of the inner tank body 3 through a connecting seat 502;

[0036] The two axial limiting mechanisms 5 are symmetrically arranged on opposite sides of the circumference of the inner tank body 3, and the connecting line between the two axial limiting mechanisms 5 is parallel to the ground;

[0037] The two upper suspension belts 202 are parallel to each other and are both arranged above the center line of the container body, and the connecting line between the upper suspension belt 202 and the two axial limiting mechanisms 5 is vertically distributed;

[0038] The two lower slings 203 are arranged in an eight-shaped manner below the center line of the container body.

[0039] Among them Figure 1-2 As shown, the front support mechanism 1 includes an inner tube 101 and an outer tube 102, and the inner tube 101 and the outer tube 102 are respectively fixed to the outer wall of the inner liner body 3 and the inner wall of the outer tank body 4 through reinforcing plates. The inner tube 101 passes through the outer tube 102 and is fixed with a glass fiber reinforced plastic part 103, and the glass fiber reinforced plastic part 103 is slidably matched with the outer tube 102.

[0040] Among them Figure 1-2 As shown, a limiting ring 104 is provided on the inner side of one end of the outer tube 102 close to the inner tank body 3 , the inner tube 101 is slidably matched with the limiting ring 104 , and a through hole 105 is opened on the side surface of the inner tube 101 , and the through hole 105 is located outside the outer tube 102 .

[0041] Among them Figure 1-2 As shown, a porous insulation blanket 106 is provided at one end of the outer tube 102 close to the outer tank body 4 and at one end of the inner tube 101 close to the inner tank body 3 , and the through opening 105 on the inner tube 101 is offset from the porous insulation blanket 106 .

[0042] Among them Figure 1 and Figure 3 As shown, the end of the limiting rod 501 passes through the angle steel ring 201 and is connected to a threaded gland 503 , and the limiting rod 501 is fixed to the angle steel ring 201 via the threaded gland 503 .

[0043] Among them Figure 1 and Figure 3 As shown, the angle between the lower sling 203 and the line connecting the two axial limiting mechanisms 5 is set to 35 degrees.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A support structure for a medium-sized horizontal cryogenic pressure vessel, comprising a vessel body, a front support mechanism (1) and a rear support mechanism (2), wherein the vessel body comprises an inner tank body (3) and an outer tank body (4), characterized in that: It also includes a set of axial limiting mechanisms (5); The front support mechanism (1) is fixed at the axis center of the moving end between the inner tank body (3) and the outer tank body (4), and the front support mechanism (1) is a glass fiber reinforced plastic support structure; The rear support mechanism (2) comprises an angle steel ring (201), two upper slings (202) and two lower slings (203); The angle steel ring (201) is fixed to the inner wall of the fixed end of the outer tank body (4), and a clearance gap is formed between the inner side of the angle steel ring (201) and the inner tank body (3); One end of the two upper slings (202) and the two lower slings (203) are fixed to the angle steel ring (201), and the other ends of the two upper slings (202) and the two lower slings (203) are fixed to the end surface of the inner liner body (3) through a reinforcing plate; The axial limiting mechanism (5) comprises a limiting rod (501), one end of which is fixed to the angle steel ring (201), and the other end of which is fixed to the peripheral side surface of the inner tank body (3) via a connecting seat (502); The two axial limiting mechanisms (5) are symmetrically arranged on opposite sides of the peripheral side surface of the inner tank body (3), and the connecting line between the two axial limiting mechanisms (5) is parallel to the ground; The two upper suspension belts (202) are parallel to each other and are both arranged above the center line of the container body, and the connection line between the upper suspension belt (202) and the two axial limiting mechanisms (5) is vertically distributed; The two lower slings (203) are arranged in an eight-shaped shape below the center line of the container body.

2. The support structure of a medium-sized horizontal cryogenic pressure vessel according to claim 1, characterized in that: The front support mechanism (1) comprises an inner tube (101) and an outer tube (102); the inner tube (101) and the outer tube (102) are respectively fixed to the outer wall of the inner tank body (3) and the inner wall of the outer tank body (4) via reinforcing plates; the inner tube (101) passes through the outer tube (102) and is fixed with a glass fiber reinforced plastic part (103); the glass fiber reinforced plastic part (103) is slidably matched with the outer tube (102).

3. The supporting structure of a medium-sized horizontal cryogenic pressure vessel according to claim 2, characterized in that: A limiting ring (104) is provided on the inner side of one end of the outer tube (102) close to the inner tank body (3); the inner tube (101) is slidably matched with the limiting ring (104); a through opening (105) is provided on the circumferential side of the inner tube (101); and the through opening (105) is located outside the outer tube (102).

4. The support structure of a medium-sized horizontal cryogenic pressure vessel according to claim 3, characterized in that: A porous heat-insulating blanket (106) is provided at one end of the outer tube (102) close to the outer tank body (4) and at one end of the inner tube (101) close to the inner tank body (3), and the through opening (105) on the inner tube (101) is offset from the porous heat-insulating blanket (106).

5. The support structure of a medium-sized horizontal cryogenic pressure vessel according to claim 1, characterized in that: The end of the limiting rod (501) passes through the angle steel ring (201) and is connected to a threaded pressure cover (503); the limiting rod (501) is fixed to the angle steel ring (201) via the threaded pressure cover (503).

6. The support structure of a medium-sized horizontal cryogenic pressure vessel according to claim 1, characterized in that: The angle between the lower sling (203) and the line connecting the two axial limiting mechanisms (5) is set to 35 degrees.

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