Fixing structure for horizontal transportation of equipment in cold box

Abstract

The utility model discloses a fixing structure for horizontal transportation of equipment in a cold box, and belongs to the field of cryogenic devices. The device comprises a transportation hanging lug and a hanging support lug which are arranged on equipment in the cold box, and a connecting structure for connecting the transportation hanging lug and the hanging support lug with the inner wall of the cold box. The transportation hanging lug comprises a hanging lug base plate, a hanging lug bottom plate and a hanging lug side rib plate, the hanging lug base plate is fixed to the outer wall of the equipment, the hanging lug bottom plate is perpendicular to the hanging lug base plate, one end of the hanging lug bottom plate is fixedly connected with the hanging lug base plate, and a first long round hole is formed in the hanging lug bottom plate. The suspension support lug comprises a support lug base plate, a support lug bottom plate and a support lug side rib plate, the support lug base plate is fixed on the outer wall of the equipment, and one side of the support lug side rib plate is vertically fixed on the support lug base plate; the supporting lug bottom plate is fixed to the bottom of the supporting lug side rib plate, and a second long round hole is formed in the supporting lug bottom plate. The transportation hanging lugs and the hanging supporting lugs jointly complete fixing work in the horizontal transportation process of the equipment in the cold box, and the equipment or pipelines in the cold box are prevented from being damaged in the transportation process.

Description

Technical Field

[0001] This utility model belongs to the field of cryogenic devices, specifically relating to a fixed structure for horizontal transportation of equipment inside a cold box. Background Technology

[0002] In the cryogenic field, the core component is the cryogenic cold box (hereinafter referred to as "cold box"). The cold box contains various devices connected by pipelines, and its exterior is insulated with perlite. The operating temperature of the cold box is generally between -100℃ and -196℃, and in the cryogenic hydrogen production industry, the operating temperature can even be as low as -253℃. The standard transportable overall height of the cold box is generally 20-40 meters, therefore it needs to be transported horizontally to the user's site.

[0003] A cold box experiences a temperature difference of 100-200°C, or even close to 300°C, between its manufacturing and operational states. While internal equipment, piping, and supports are mostly manufactured at room temperature, the temperature varies significantly throughout the box during operation. For example, the frame and some supporting components are at or near ambient temperature, while the internal equipment, piping, and supports operate in a cryogenic environment. Under these conditions, these components deform, causing displacement. To prevent this displacement from creating constraint stress, a common solution is to add detachable clamps or other fixing structures, which are then removed after the cold box arrives on site and is erected. However, with the increasing size of cold boxes, transport dimensions have made the internal space more compact, preventing personnel from accessing the box to remove transport clamps or other fixing structures after it has been erected.

[0004] Therefore, developing a fixed structure for horizontal transport of refrigerated containers that does not require disassembly and can compensate for displacement due to cold contraction during operation is crucial for solving the problem of horizontal transport of equipment inside refrigerated containers. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies and provide a fixed structure for horizontal transportation of equipment inside a cold box.

[0006] The specific technical solution adopted in this utility model is as follows:

[0007] A fixing structure for horizontal transport of equipment inside a cold box includes transport lugs and suspension lugs installed on the equipment inside the cold box, as well as a connecting structure for connecting to the inner wall of the cold box.

[0008] The transport lug includes a lug pad, a lug base plate, and lug side stiffeners. The lug pad is fixed to the outer wall of the equipment and fits tightly. The lug base plate is perpendicular to the lug pad, and one end of the lug base plate is fixedly connected to the lug pad. A first elongated hole for displacement compensation is formed on the lug base plate. The length direction of the first elongated hole is oriented towards the central axis of the equipment. One end of the connecting structure is fixedly connected to the inner wall of the cold box. The other end is provided with a connector, which passes through the first elongated hole and connects to the lug base plate. Lug side stiffeners are also vertically fixed on both sides of the lug base plate.

[0009] The equipment has two suspension lugs on its outer wall, and the two suspension lugs are arranged opposite each other along the equipment axis. Each suspension lug includes a lug pad, a lug base plate, and a lug side stiffener. The lug pad is fixed to the outer wall of the equipment and fits tightly. One side of the lug side stiffener is vertically fixed to the lug pad. The lug base plate is fixed to the bottom of the lug side stiffener, and a second elongated hole for displacement compensation is opened on the lug base plate. The length direction of the second elongated hole is oriented towards the central axis of the equipment. The lug base plate and the inner wall of the cold box are also connected by a connecting structure. One end of the connecting structure is fixedly connected to the inner wall of the cold box. The other end is provided with a connector, which passes through the second elongated hole to form a connection with the lug base plate.

[0010] The angle between the location of the transport lug and the two suspension lugs is 90°. When the equipment experiences cold contraction and displacement due to temperature difference, the connector moves in the first and second elongated holes respectively to compensate for displacement in two directions.

[0011] Preferably, the connector uses bolts and matching nuts.

[0012] Preferably, the ear pad is fixed to the outer wall of the equipment by welding.

[0013] Preferably, the lug pad is fixed to the outer wall of the equipment by welding.

[0014] Preferably, both the bottom plate and the side stiffener plate of the ear are made of steel plate; the side stiffener plate and the bottom plate of the ear are fixed together as a whole by welding.

[0015] Preferably, both the bottom plate and the side stiffener plate of the ear are made of aluminum alloy; the side stiffener plate and the bottom plate of the ear are fixed together as a whole by welding.

[0016] Preferably, the connecting structure is made of channel steel.

[0017] Preferably, the length of the first elongated hole on the bottom plate of the ear hook is 5 to 40 mm.

[0018] Preferably, the length of the second elongated hole on the base plate of the support ear is 5 to 40 mm.

[0019] Compared with the prior art, this utility model has the following advantages:

[0020] The internal equipment of the cold box is equipped with transport lugs and two suspension supports. These lugs and supports have elongated holes facing the central axis of the equipment. The two suspension supports are positioned opposite each other along the vertical central axis of the equipment, restricting horizontal displacement while compensating for vertical sliding. The transport lugs, in turn, restrict vertical displacement and compensate for horizontal sliding. Together, the transport lugs and suspension supports secure the equipment during horizontal transport within the cold box, preventing damage to the internal equipment or piping. Furthermore, they do not interfere with the vertical operation of the equipment and do not require removal after transport. This design is suitable for existing cold boxes, reducing operational complexity and improving efficiency. Attached Figure Description

[0021] Figure 1 This is an overall schematic diagram of the fixing structure for horizontal transportation of equipment inside a cold box provided in this embodiment;

[0022] Figure 2 This is a left view of the fixed structure for horizontal transportation of equipment inside a cold box provided in this embodiment;

[0023] Figure 3 This is a connection diagram for the transport lugs;

[0024] Figure 4 This is a schematic diagram of the connection of the suspension lugs;

[0025] In the diagram: Equipment 1, transport lug 2, lug pad 201, lug base plate 202, lug side stiffener 203, first elongated hole 204, suspension lug 3, support lug pad 301, support lug base plate 302, support lug side stiffener 303, second elongated hole 304, connecting structure 4. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below. Technical features in various embodiments of this utility model can be combined appropriately without conflict.

[0027] like Figure 1 and Figure 2 As shown, as a preferred embodiment of the present utility model, this embodiment provides a fixing structure for horizontal transportation of equipment inside a cold box, including a transport lug 2 and a suspension lug 3 disposed on the equipment 1 inside the cold box, and a connection structure 4 for connecting with the cold box 1.

[0028] In the device provided by this utility model, the transport hanger 2 and the two suspension supports 3 are both installed on the outer wall of the equipment 1, and the two suspension supports 3 are arranged opposite each other along the axis of the equipment 1. The included angle between the two suspension supports 3 is 180°. The included angle between the position of the transport hanger 2 and the two suspension supports 3 is 90°. The transport hanger 2 and the two suspension supports 3 are all fixedly connected to the inner wall of the cold box through the connecting structure 4. The connecting structure 4 can be made of channel steel. The transport hanger 2 and the suspension supports 3 serve as transport auxiliary devices and do not need to be disassembled after the equipment 1 is in place.

[0029] like Figure 3 As shown, the transport lug 2 includes a lug pad 201, a lug base plate 202, and lug side stiffeners 203. The lug pad 201 is fixed to the outer wall of the equipment 1 and fits tightly. Due to the large weight of the equipment 1, the lug pad 201 is generally fixedly connected to the equipment 1 by welding. The lug base plate 202 is set perpendicular to the lug pad 201, and one end of the lug base plate 202 is fixedly connected to the lug pad 201, generally by welding. A first elongated hole 204 for displacement compensation is provided on the lug base plate 202. The length direction of the first elongated hole 204 is oriented towards the central axis of the equipment 1. When the cold shrink center is required to be a certain pipe port of the equipment 1, the length direction of the first elongated hole 204 needs to be flush with or parallel to the pipe port. The length of the first elongated hole 204 needs to be calculated based on the cold shrink beam, and the length range of the first elongated hole 204 can be set in the range of 5 to 40 mm. One end of the connecting structure 4 is fixedly connected to the inner wall of the cold box, and the other end is provided with a connector. The connector passes through the first elongated hole 204 and is connected to the hanging ear base plate 202. In this embodiment, the connector is a bolt and a matching nut. When the device 1 experiences a shrinkage displacement due to temperature difference, the connector can move back and forth along the length of the first elongated hole 204 to compensate for the displacement of the device 1 in the length of the first elongated hole 204 caused by shrinkage.

[0030] In the device provided in this embodiment, hanging ear base plate 202 is also vertically fixed with hanging ear side stiffener plates 203 on both sides. The hanging ear base plate 202 and the hanging ear side stiffener plates 203 are made of steel plate or aluminum alloy plate. The specific material of the hanging ear base plate 202 and the hanging ear side stiffener plates 203 can be selected according to the material of the assembled equipment 1. For example, for equipment 1 with high strength requirements and made of special alloy steel, if its operating environment inside the cold box is complex, the hanging ear base plate 202 and the hanging ear side stiffener plates 203 can be made of steel plate to ensure structural strength; when the material of equipment 1 is aluminum alloy and the equipment 1 itself is relatively light, the hanging ear base plate 202 and the hanging ear side stiffener plates 203 can be made of aluminum alloy plate to reduce the overall weight. The hanging ear base plate 202 and the hanging ear side stiffener plates 203 are fixed as a whole by welding. If the base plate 202 and the side stiffener plate 203 of the ear are made of steel plates, then the entire assembly after the base plate 202 and the side stiffener plate 203 of the ear are welded and fixed can be replaced by channel steel.

[0031] like Figure 4 As shown, each suspension lug 3 includes a lug pad 301, a lug base plate 302, and a lug side stiffener 303. The lug pad 301 is fixed to the outer wall of the equipment 1 and fits tightly. Due to the large weight of the equipment 1, welding is also used for fixing to make the structure more stable. One side of the lug side stiffener 303 is vertically fixed to the lug pad 301, and the lug base plate 302 is fixed to the bottom of the lug side stiffener 303, generally also by welding. A second elongated hole 304 for displacement compensation is provided on the lug base plate 302. The length direction of the second elongated hole 304 is oriented towards the central axis of the equipment 1. The length of the second elongated hole 304 needs to be calculated based on the cold shrinkage of the equipment 1, and the length range of the second elongated hole 304 can be set in the range of 5 to 40 mm. One end of the connecting structure 4 is fixedly connected to the inner wall of the cold box, and the other end is provided with a connector. The connector passes through the second elongated hole 304 and is fixedly connected to the lug base plate 302. In this embodiment, the connector uses bolts and matching nuts. When the device 1 experiences a shrinkage displacement due to temperature difference, the connector can move back and forth along the length of the second elongated hole 304 to compensate for the displacement of the device 1 along the length of the second elongated hole 304 caused by shrinkage.

[0032] Since the angle between the transport lug 2 and the two suspension lugs 3 is 90°, when the equipment 1 is displaced due to temperature difference, the first elongated hole 204 and the second elongated hole 304 compensate for the displacement in both directions, while also restricting the displacement of the equipment 1 in the non-working direction of temperature contraction.

[0033] It should be noted that although the present invention mentions that the lengths of the first elongated hole 204 and the second elongated hole 304 can be set within the range of 5 to 40 mm, this does not mean that the specific dimensions of the first elongated hole 204 and the second elongated hole 304 are limited. In fact, those skilled in the art can make reasonable selections based on the size of the equipment, the material, and the operating temperature.

[0034] The embodiments described above are merely preferred solutions of this utility model, and are not intended to limit the scope of this utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this utility model. Therefore, all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A fixing structure for horizontal transport of equipment inside a refrigerated container, characterized in that, It includes transport lugs (2) and suspension lugs (3) installed on the equipment (1) inside the cold box, and a connection structure (4) for connecting to the inner wall of the cold box; The transport lug (2) includes a lug pad (201), a lug base plate (202), and lug side stiffeners (203); the lug pad (201) is fixed to the outer wall of the equipment (1) and fits tightly; the lug base plate (202) is set perpendicular to the lug pad (201), one end of the lug base plate (202) is fixedly connected to the lug pad (201), and a first elongated hole (204) for displacement compensation is opened on the lug base plate (202); the length direction of the first elongated hole (204) is oriented towards the central axis of the equipment (1); one end of the connecting structure (4) is fixedly connected to the inner wall of the cold box; the other end is provided with a connector, which passes through the first elongated hole (204) and forms a connection with the lug base plate (202); lug side stiffeners (203) are also vertically fixed on both sides of the lug base plate (202); The outer wall of the device (1) is provided with two suspension lugs (3), and the two suspension lugs (3) are arranged opposite to each other along the axis of the device (1); each suspension lug (3) includes a lug pad (301), a lug base plate (302), and a lug side stiffener plate (303); the lug pad (301) is fixed to the outer wall of the device (1) and fits tightly; one side of the lug side stiffener plate (303) is vertically fixed to the lug pad (301); the lug base plate (302) is fixed to the lug. At the bottom of the side stiffener plate (303), a second elongated hole (304) for displacement compensation is opened on the support base plate (302); the length direction of the second elongated hole (304) is oriented towards the central axis of the equipment (1); the support base plate (302) and the inner wall of the cold box are also connected by a connecting structure (4); one end of the connecting structure (4) is fixedly connected to the inner wall of the cold box; the other end is provided with a connector, which passes through the second elongated hole (304) and forms a connection with the support base plate (302); The angle between the position of the transport lug (2) and the two suspension lugs (3) is 90°. When the equipment (1) is displaced due to temperature difference, the connector moves in the first elongated hole (204) and the second elongated hole (304) respectively to compensate for displacement in two directions.

2. The fixing structure for horizontal transportation of equipment inside a cold box according to claim 1, characterized in that, The connector uses bolts and matching nuts.

3. The fixing structure for horizontal transportation of equipment inside a cold box according to claim 1, characterized in that, The ear pad (201) is fixed to the outer wall of the equipment (1) by welding.

4. The fixing structure for horizontal transportation of equipment inside a cold box according to claim 1, characterized in that, The lug pad (301) is fixed to the outer wall of the equipment (1) by welding.

5. The fixing structure for horizontal transportation of equipment inside a cold box according to claim 1, characterized in that, The bottom plate (202) and the side stiffener plate (203) of the ear are both made of steel plate; the side stiffener plate (203) and the bottom plate (202) of the ear are fixed as a whole by welding.

6. The fixing structure for horizontal transportation of equipment inside a cold box according to claim 1, characterized in that, The bottom plate (202) and the side stiffener plate (203) of the ear are both made of aluminum alloy plate; the side stiffener plate (203) and the bottom plate (202) of the ear are fixed as a whole by welding.

7. The fixing structure for horizontal transportation of equipment inside a cold box according to claim 1, characterized in that, The connecting structure (4) is made of channel steel.

8. The fixing structure for horizontal transportation of equipment inside a cold box according to claim 1, characterized in that, The length of the first elongated hole (204) opened on the ear-hanging base plate (202) is 5-40mm.

9. The fixing structure for horizontal transportation of equipment inside a cold box according to claim 1, characterized in that, The length of the second elongated hole (304) opened on the base plate (302) of the support ear is 5 to 40 mm.

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