Roller carrier for winding coiled tube heat exchanger

Abstract

The roller carrier comprises two roller seats, roller bodies are installed on the roller seats, the distance between the two roller seats can be adjusted, a tube plate at the end of a central cylinder of the heat exchanger abuts against and makes contact with the two roller bodies, a lifting mechanism is arranged between the two roller seats, the lifting mechanism comprises an arc-shaped abutting piece, and the arc-shaped abutting piece is connected with the two roller seats in an abutting mode. The lifting mechanism acts to enable the arc-shaped abutting piece to abut against the pipe plate of the center cylinder, when the weight of the wound pipe body becomes larger and larger and exceeds the bearing limit of the rolling wheels, the lifting mechanism acts to enable the arc-shaped abutting piece to abut against the pipe plate of the center cylinder so that the center cylinder can be lifted by a certain height to be away from the rolling wheel bodies, and at the moment, the distance between the two rolling wheel bodies can be reduced. And after adjustment and fixation are completed, the center cylinder is lowered to abut against the roller body, safety accidents such as roller deformation and roller frame tilting possibly caused by continuous winding of the heat exchange tube for weight increment can be prevented, the equipment damage probability is reduced, and the safety performance is improved.

Description

Technical Field

[0001] The present application belongs to the field of auxiliary devices for coiled-tube heat exchangers, and in particular, relates to a roller frame for winding a coiled-tube heat exchanger. Background Art

[0002] The spiral wound tube heat exchanger consists of a spiral wound tube body and a shell. The spiral wound tube body consists of a central tube, heat exchange tubes, gaskets and tube clamps. The heat exchange tubes are tightly wound around the central tube and separated by flat gaskets and special-shaped gaskets. Due to its compact structure and high heat exchange efficiency, it is widely used in chemical industry, LNG liquefaction and other equipment. In recent years, its application in hydrogenation equipment has also gradually increased. The use of spiral wound tube heat exchangers can greatly improve heat exchange efficiency, reduce fuel gas consumption and reduce production costs.

[0003] When winding the heat exchange tube, the center tube is placed on the roller frame, so that the tube sheet parts at both ends of the center tube are in contact with the rollers of the roller frame, and the rollers are rotated by the transmission mechanism to drive the center tube on the roller frame to rotate by friction. Most of the existing roller frames can adjust the spacing to adapt to tubes of different diameters. When the heat exchange tube is not wound, the roller spacing is adjusted to meet the requirements. However, in the process of gradually winding the heat exchange tube on the center tube, the total weight of the center tube and the tube bundle will become larger and larger, which will cause the load on each roller to increase. If the load exceeds the design of the initial roller spacing, If the load-bearing capacity is insufficient, the roller may be unable to bear the weight, which may cause the roller to deform, be damaged or slide, which may cause the workpiece to shake, tilt or lose balance, and bring instability to the working process. To prevent the above situation from happening, it is necessary to lift the central tube around which the heat exchange tube is wound, and adjust the roller spacing appropriately to improve the load-bearing capacity of the roller frame. However, the existing roller frame does not have a lifting function, and the heat exchange tube wound around the central tube is very easy to deform. Therefore, it is not convenient to use a hoist to lift it to the position of the heat exchange tube winding area. It can be seen that the existing technology needs to be further improved and enhanced. Utility Model Content

[0004] The utility model provides a roller frame for winding a coiled tube heat exchanger, which is used to solve the problem that during the process of winding heat exchange tubes of the coiled tube heat exchanger, the coiled tube body of the coiled tube bundle becomes heavier and heavier, and the roller spacing needs to be adjusted to improve the bearing capacity.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A roller frame for winding a wound tube heat exchanger comprises two roller seats, roller bodies are installed on the roller seats, the spacing between the two roller seats can be adjusted, the tube sheet at the end of the central tube of the heat exchanger abuts against the two roller bodies, a lifting mechanism is arranged between the two roller seats, the lifting mechanism comprises an arc-shaped abutment member, the lifting mechanism can move the arc-shaped abutment member to abut against the tube sheet of the central tube, so as to lift the central tube of the wound heat exchange tube and make the tube sheet away from the roller body, so as to adjust the spacing between the two roller seats.

[0007] The utility model discloses a roller frame for winding a coiled tube heat exchanger, wherein a lifting mechanism is arranged between two roller seats. When the weight of the coiled tube body becomes heavier and exceeds the load-bearing limit of the roller, the lifting mechanism can be actuated to cause the arc-shaped abutting member to abut against the tube sheet of the center tube, so that the center tube is lifted to a certain height away from the roller body. At this time, the distance between the two roller bodies can be narrowed to increase the load-bearing capacity. After adjustment and fixation, the center tube is lowered to abut against the roller body. The lifting position is the tube sheet instead of the area where the heat exchange tube is wound. This can effectively protect the heat exchange tube from being deformed under lifting, and can prevent the occurrence of safety accidents such as roller deformation and tilting of the roller frame caused by continued weight increase of the heat exchange tube, thereby reducing the probability of equipment damage and improving safety performance.

[0008] In a preferred implementation, the arc-shaped abutment member includes a first arc-shaped abutment member and a second arc-shaped abutment member, and the distance between the first arc-shaped abutment member and the second arc-shaped abutment member can be adjusted to accommodate tube sheets with different diameters.

[0009] In a preferred implementation, the first arc-shaped abutment member is connected to the first piston rod, the first piston rod is arranged on the first piston cylinder, and the first piston cylinder is arranged on the first movable seat; the second arc-shaped abutment member is connected to the second piston rod, the second piston rod is arranged on the second piston cylinder, and the second piston cylinder is arranged on the second movable seat; the first movable seat can drive the first piston cylinder to move linearly, and the second movable seat can drive the second piston cylinder to move linearly.

[0010] In a preferred implementation, the first movable seat and the second movable seat are arranged on a bidirectional lead screw, and the rotation of the bidirectional lead screw can make the first movable seat and the second movable seat approach or move away from each other.

[0011] In a preferred implementation, it also includes a main body support platform, the roller seat is detachably arranged on the main body support platform, the bidirectional screw, the first movable seat, the second movable seat, the first piston cylinder and the second piston cylinder are arranged inside the main body support platform, and the table surface of the main body support platform is provided with a movable groove, the first piston rod passes through the movable groove to connect to the first arc-shaped abutment member, and the second piston rod passes through the movable groove to connect to the second arc-shaped abutment member.

[0012] In a preferred implementation, it also includes an auxiliary support mechanism, which includes an airbag component. After the airbag component is inflated, it abuts against the first arc-shaped abutment component / the second arc-shaped abutment component and the table surface of the main body support platform to enhance the bearing capacity of the first arc-shaped abutment component / the second arc-shaped abutment component.

[0013] In a preferred implementation, the airbag component is integrated into the inflation cylinder, and air is inflated or deflated into the inner space of the inflation cylinder to expand or contract the airbag component. The inflation cylinder is sleeved on the outside of the first piston rod / the second piston rod to move with the first arcuate abutment component / the second arcuate abutment component.

[0014] In a preferred implementation, rubber pads are provided on the abutment surfaces of the first arc-shaped abutment member and the second arc-shaped abutment member with the tube sheet.

[0015] The above structure has the following beneficial effects:

[0016] 1. By setting a lifting mechanism between the two roller seats, when the weight of the wrapped tube body becomes heavier and exceeds the load limit of the roller, the lifting mechanism can be activated to make the arc-shaped abutment member abut against the tube sheet of the center tube to lift the center tube to a certain height away from the roller body. At this time, the distance between the two roller bodies can be reduced to increase the load-bearing capacity. The lifting position is the tube sheet instead of the area where the heat exchange tube is wrapped, which can effectively protect the heat exchange tube from deformation during lifting, and can prevent the deformation of the roller caused by continued weight increase of the heat exchange tube, the tilting of the roller frame and other safety accidents, thereby reducing the probability of equipment damage and improving safety performance.

[0017] 2. The arc-shaped abutment member includes a first arc-shaped abutment member and a second arc-shaped abutment member that can move away from or approach each other, and can adapt to lifting operations of tube sheets in different directions. At the same time, an airbag member is provided to cooperate with the arc-shaped abutment member after expansion, so that the arc-shaped abutment member of the present application has a greater supporting force and is safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present application and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of a three-dimensional structure of a schematic implementation of a roller frame for winding a coiled tube heat exchanger of the present application is depicted;

[0020] Figure 2 A schematic diagram of the internal structure of a schematic implementation of a roller frame for winding a coiled tube heat exchanger of the present application is depicted;

[0021] Figure 3 This application is shown Figure 2 A schematic diagram of an enlarged structure of an exemplary implementation method of part A in FIG.

[0022] Description of labels:

[0023] 1-roller seat; 2-roller body; 3-tube plate; 4-main body support platform; 40-movable groove; 50-first arc-shaped abutment member; 51-second arc-shaped abutment member; 52-first piston rod; 53-second piston rod; 54-first piston cylinder; 55-second piston cylinder; 56-first moving seat; 57-second moving seat; 6-bidirectional screw; 60-driving motor; 7-auxiliary support mechanism; 70-airbag member; 71-inflator; 8-rubber pad. DETAILED DESCRIPTION

[0024] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0025] In the description of the present invention, it is necessary to understand that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the present invention, unless otherwise clearly specified and limited, a first feature being "upper" or "lower" than a second feature may be the first and second features directly contacting, or the first and second features indirectly contacting through an intermediate medium.

[0026] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are connected to form a whole only through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0027] In the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0028] The utility model is described below in conjunction with the accompanying drawings.

[0029] The specific plans adopted are:

[0030] like Figure 1-3As shown, the utility model provides a roller frame for winding a wound tube heat exchanger, including two roller seats 1, on which roller bodies 2 are installed, and the distance between the two roller seats 1 can be adjusted. The tube sheet 3 at the end of the central tube of the heat exchanger abuts against the two roller bodies 2. A lifting mechanism is provided between the two roller seats, and the lifting mechanism includes an arc-shaped abutting member. The lifting mechanism can cause the arc-shaped abutting member to abut against the tube sheet 3 of the central tube, so as to lift the central tube for winding the heat exchange tube and make the tube sheet 3 away from the roller body 2, so as to adjust the distance between the two.

[0031] The utility model provides a roller frame for winding a coiled tube heat exchanger, by arranging a lifting mechanism between the two rollers. When the weight of the coiled tube body becomes heavier and exceeds the load-bearing limit of the roller, the lifting mechanism can be activated to make the arc-shaped abutting piece abut against the center tube sheet 3 to lift the center tube to a certain height away from the roller body 2. At this time, the distance between the two roller bodies 2 can be reduced to improve the load-bearing capacity. After adjustment and fixation, the center tube sheet 3 is lowered to abut against the roller body 2. The lifting position is the tube sheet 3 instead of the area where the heat exchange tube is wound. This can effectively protect the heat exchange tube from being deformed under lifting and can reduce the occurrence of safety accidents such as roller deformation and roller frame tilting caused by continued weight increase of the heat exchange tube.

[0032] As a preferred embodiment of the present application, see Figure 1 and Figure 2 The arc-shaped abutment member includes a first arc-shaped abutment member 50 and a second arc-shaped abutment member 51. The distance between the first arc-shaped abutment member 50 and the second arc-shaped abutment member 51 can be adjusted to adapt to the lifting operation of the tube sheet 3 with different diameters.

[0033] For specific arc-shaped abutment lifting mechanism, see Figure 2 The first arc-shaped abutment member 50 is connected to the first piston rod 52, the first piston rod 52 is arranged on the first piston cylinder 54, and the first piston cylinder 54 is arranged on the first movable seat 56; the second arc-shaped abutment member 51 is connected to the second piston rod 53, the second piston rod 53 is arranged on the second piston cylinder 55, and the second piston cylinder 55 is arranged on the second movable seat 57; the first movable seat 56 can drive the first piston cylinder 54 to move linearly, and the second movable seat 57 can drive the second piston cylinder 55 to move linearly. It can be understood by those skilled in the art that the piston rod can be driven to rise and fall by hydraulic drive.

[0034] The mechanism for realizing the relative movement of the first arc-shaped abutment member 50 and the second arc-shaped abutment member 51 is shown in Figure 2 The first movable seat 56 and the second movable seat 57 are arranged on the bidirectional screw 6, and the bidirectional screw is connected to the driving motor 60. The rotation of the bidirectional screw 6 can make the first movable seat 56 and the second movable seat 57 approach or move away from each other.

[0035] For details, see Figure 1, also includes a main body support platform 4, the roller seat 1 is detachably arranged on the main body support platform 4, the roller seat can be bolted to the main body support platform 4, the two-way screw 6, the first movable seat 56, the second movable seat 57, the first piston cylinder 54 and the second piston cylinder 55 are arranged inside the main body support platform 4, the table surface of the main body support platform 4 is provided with a movable groove 40, the first piston rod 52 passes through the movable groove 40 to connect the first arc-shaped abutment member 50, and the second piston rod 53 passes through the movable groove 40 to connect the second arc-shaped abutment member 51.

[0036] In order to enhance the supporting capacity of the first arc-shaped abutment member 50 and the second arc-shaped abutment member 51 and prevent the abutment members from being deformed by force, in the embodiment, an auxiliary supporting mechanism 7 is also included. The auxiliary supporting mechanism includes an airbag member 70. After the airbag member 70 is inflated, it abuts against the first arc-shaped abutment member 50 / the second arc-shaped abutment member 51 between the table surface of the main body support platform 4, and supports together with the arc-shaped abutment members to disperse the force to the main body support platform 4, thereby enhancing the bearing capacity of the first arc-shaped abutment member 50 / the second arc-shaped abutment member 51.

[0037] For details, see Figure 3 The airbag component 70 is integrated in the inflation cylinder 71. Air is inflated or deflated into the internal space of the inflation cylinder 71 to expand or contract the airbag component 70. The inflation cylinder 71 is sleeved on the outside of the first piston rod 52 / the second piston rod 53, so that it can move with the first arc-shaped abutment component 50 / the second arc-shaped abutment component 51, and the structural design is more reasonable.

[0038] In addition, rubber pads 8 are provided on the contact surfaces of the first arc-shaped abutting member 50 and the second arc-shaped abutting member 51 with the tube sheet 3 to reduce the contact wear of the tube sheet 3.

[0039] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0040] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A roller frame for winding a coiled heat exchanger, comprising two roller seats, the roller seats are equipped with roller bodies, the spacing between the two roller seats can be adjusted, the tube sheet at the end of the central tube of the heat exchanger abuts against the two roller bodies, characterized in that: A lifting mechanism is provided between the two roller seats, and the lifting mechanism includes an arc-shaped abutment member. The lifting mechanism can cause the arc-shaped abutment member to abut against the tube sheet of the central tube to lift the central tube around which the heat exchange tube is wound so that the tube sheet is away from the roller body, so as to adjust the distance between the two roller seats.

2. The roller frame for winding a coiled tube heat exchanger according to claim 1, characterized in that: The arc-shaped abutment member includes a first arc-shaped abutment member and a second arc-shaped abutment member, and the distance between the first arc-shaped abutment member and the second arc-shaped abutment member can be adjusted to adapt to tube sheets with different diameters.

3. The roller frame for winding a coiled tube heat exchanger according to claim 2, characterized in that: The first arc-shaped abutment member is connected to the first piston rod, the first piston rod is arranged on the first piston cylinder, and the first piston cylinder is arranged on the first movable seat; the second arc-shaped abutment member is connected to the second piston rod, the second piston rod is arranged on the second piston cylinder, and the second piston cylinder is arranged on the second movable seat; the first movable seat can drive the first piston cylinder to move linearly, and the second movable seat can drive the second piston cylinder to move linearly.

4. The roller frame for winding a coiled tube heat exchanger according to claim 3, characterized in that: The first moving seat and the second moving seat are arranged on a bidirectional lead screw, and the rotation of the bidirectional lead screw can make the first moving seat and the second moving seat approach or move away from each other.

5. The roller frame for winding a coiled tube heat exchanger according to claim 4, characterized in that: It also includes a main body support platform, the roller seat is detachably arranged on the main body support platform, the bidirectional screw, the first movable seat, the second movable seat, the first piston cylinder and the second piston cylinder are arranged inside the main body support platform, the table surface of the main body support platform is provided with a movable groove, the first piston rod passes through the movable groove to connect to the first arc-shaped abutment member, and the second piston rod passes through the movable groove to connect to the second arc-shaped abutment member.

6. The roller frame for winding a coiled tube heat exchanger according to claim 5, characterized in that: It also includes an auxiliary support mechanism, which includes an airbag component. After the airbag component is expanded, it abuts against the first arc-shaped abutment component / the second arc-shaped abutment component and the table surface of the main body support platform to enhance the bearing capacity of the first arc-shaped abutment component / the second arc-shaped abutment component.

7. The roller frame for winding a coiled tube heat exchanger according to claim 6, characterized in that: The airbag component is integrated in the inflation cylinder, and the air is inflated or deflated into the inner space of the inflation cylinder to expand or contract the airbag component. The inflation cylinder is sleeved on the outside of the first piston rod / the second piston rod to move with the first arcuate abutment component / the second arcuate abutment component.

8. The roller frame for winding a coiled tube heat exchanger according to claim 2, characterized in that: Rubber pads are provided on the abutting surfaces of the first arc-shaped abutting piece and the second arc-shaped abutting piece with the tube sheet.

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