Triangular frame truss girder convenient for horizontal transportation in tower

Abstract

The utility model relates to the technical field of petrochemical engineering, and discloses a triangular frame truss girder convenient for horizontal transportation in a tower, which comprises three main girders, web members, connecting plates I, supporting plates and rib plates, the main girders are triangularly arranged, one main girder is arranged on the upper side and the other main girder is arranged on the lower side in parallel to form an isosceles triangle, and the web members are arranged between every two main girders. The web members form a certain angle and are connected with the main beams through the first connecting plates or directly connected with the main beams, the web members and the main beams are arranged in a triangular mode, the first connecting plates, the supporting plates and the rib plates are arranged at the two ends of each main beam, the first connecting plates are connected with the second connecting plates fixed to the tower body in a welded mode through bolts, and the supporting plates are in lap joint with the supports fixed to the tower body in a welded mode. According to the utility model, the size of the cross section of the main girder of the truss girder is greatly reduced, the production cost is saved, meanwhile, the flow area of gas and liquid in the tower can be better ensured, the transverse mixing of the gas and the liquid in the tower is increased, the gas-phase flow resistance is reduced, and the pressure drop in the tower is better reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of petroleum chemical industry, especially to a triangular frame truss beam convenient for horizontal transportation in a tower. BACKGROUND

[0002] With the increasingly high requirements of the state on the petroleum chemical industry in the fields of environmental protection and energy saving, and the demand of enterprises for maximization of benefits, large-scale devices have become a main development trend of the petroleum chemical industry. For large-diameter towers, whether it is a packed tower or a plate tower, the support beam will produce a large deflection due to the large span and weight of the internal components such as the tray, liquid distributor, and packing. The reasonable design of the support beam plays a significant role in fully exerting the performance of the tower internals, and the tower equipment has a relatively high requirement for the levelness of the tower internals. If the support beam is not designed properly, it will directly affect the production capacity and efficiency of the tower. If the efficiency of the tower is simply improved, the strength of the tower internals should be as high as possible, and the deflection should be as small as possible. However, the requirement for high strength and small deflection will increase the thickness of the tower internals and the cross-sectional size of the support beam, which will consume excessive materials. With the development of large-scale tower equipment, the disadvantages of the I-beam and other steel beams are becoming more and more prominent. In particular, in large-scale towers with a height of more than 7 meters, in order to meet the requirements of strength and deflection, the height and width of the I-beam and other steel beams are multiplied, which results in a large weight of the beam, a large occupied space, and a serious impact on the flow state of the gas-liquid two-phase and the mass transfer effect in the tower. Therefore, the I-beam and other steel beams for large-scale tower support are gradually replaced by truss beams.

[0003] The existing truss beam structure is generally a welded structure, which is mainly composed of two or more parallel chords and vertical rods or inclined rods or fixed-distance rods welded between the parallel chords. Such a truss beam generally cannot be accessed from a manhole, and it is required to be delivered to the tower body factory in advance and installed in the tower before the final welding of the tower body. The tower body with the installed truss beam needs to be transported to the site together with the tower body, and then other tower internals that can be accessed from the manhole are installed. For large-diameter towers, horizontal transportation is generally adopted during transportation. Therefore, it is very unfavorable for ordinary truss beams. The vertical strength and stability of ordinary truss beams are very good, but the horizontal transportation of the tower body is equivalent to a lying state for the truss beam that has been installed in the tower. The rigidity of the large-span truss beam is very poor in the installed state with the tower body in a horizontal position, and the lateral deformation of the truss beam is further increased due to the bumping during transportation, which will result in the failure of the bolt holes on the beam to be connected with the bolt holes of the internals. In general, the truss beam needs to be temporarily supported by an additional support frame in the tower at this time to ensure the normal use of the truss beam after transportation to the site. This will consume a large amount of manpower, material resources, and financial resources, and will result in a relatively long transportation period. Therefore, there is an urgent need for a triangular frame truss beam that is convenient for horizontal transportation in a tower, has high strength, good rigidity, good stability, is convenient to transport, and can save labor costs.

[0004] Triangular frame truss girder is widely used in building, bridge and other steel structure facilities, and the truss span can reach dozens of meters. However, the triangular frame truss girder used as a support beam in a tower is very rare, and this truss girder is different from the triangular frame truss girder in the building industry. On the one hand, this truss girder is only a pure steel structure beam and is not combined with reinforced concrete, and the support position is affected by the structure in the tower and the supporting component and is not as arbitrary as in the building industry. On the other hand, the deflection requirement of the support beam in the tower is more stringent, and the upper surface of the beam must be a horizontal structure to ensure that the tower components are smoothly connected to the truss girder. Practical new type content

[0005] In order to make up for the above shortcomings, the utility model provides a triangular frame truss girder convenient for horizontal transportation in a tower, aiming at improving the shortcomings of traditional I-beams and other sectional steel beams and the shortcomings of existing welded structure truss girders, and the strength, rigidity, stability and transportation problems of the truss girder.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a triangular frame truss girder convenient for horizontal transportation in a tower, comprising a main beam, a web, a connecting plate one, a supporting plate and a rib plate, the main beam is 3, arranged in a triangle, the main beam is arranged in an isosceles triangle parallelly on the upper two lower sides, the web is arranged between every two main beams, the web is connected with the main beam through the connecting plate one or directly connected with the main beam at a certain angle, and the main beam is arranged in a triangle, the connecting plate one, the supporting plate and the rib plate are arranged at both ends of each main beam, the connecting plate one is connected with the connecting plate two fixedly welded on the tower body through bolts, the supporting plate is overlapped with the support fixedly welded on the tower body, and the supporting plate is connected and fixed with the support through bolts, so that the stable arrangement of the truss girder is realized.

[0007] Further, the main beam is generally set as 3, one on the upper side and two on the lower side, arranged in an isosceles triangle in space, the three main beams are parallel to each other, and the two main beams on the lower side are on the same horizontal plane and parallel to the main beam on the upper side, the cross-sectional size of the main beam can be determined through strength calculation, the cross-sectional sizes can be the same or different, but the upper surface of the upper chord main beam is required to be a horizontal structure to ensure that the tower components can be smoothly overlapped and the horizontal degree of the tower components is ensured, the structure of the main beam can adopt a T-shaped beam or other cross-sectional beam, the T-shaped beam can be a finished T-shaped beam or a T-shaped beam welded by a steel plate, or a T-shaped steel beam composed of angle steel beams back to back welded; the other cross-sectional beam includes a circular pipe, an I-beam composed of channel steel back to back welded and a symmetrical cross-sectional beam composed of other sectional steel back to back welded.

[0008] Further, when the main beam is a cross-section beam composed of back-to-back channel steel or angle steel, the connecting plate is clamped in the gap between the back-to-back welded steel profiles of the main beam, and is welded and connected, which connects the symmetric cross-section beam and facilitates the connection between the main beam and the web.

[0009] Further, the centroid line of the web between every two main beams is kept in the same plane as the centroid line of the connected main beam and intersects with the main beam; the web is a steel profile or a round pipe, and the included angle between the web and the main beam ranges from 0° to 180°.

[0010] Further, the connecting plate has at least two long round holes at each end, a supporting plate is arranged at the bottom of the connecting plate, and a reinforcing plate is arranged at both sides of the connecting plate to connect the supporting plate and the main beam, wherein a round hole is arranged at the position of the reinforcing plate on the supporting plate, and the round hole on the supporting plate is used as a bolt hole to be connected to the support welded on the tower body through a bolt.

[0011] Further, the connecting plate has at least two long round holes at each end, a supporting plate is arranged at the bottom of the connecting plate, and a reinforcing plate is arranged at both sides of the connecting plate to connect the supporting plate and the main beam, wherein a round hole is arranged at the position of the reinforcing plate on the supporting plate, and the round hole on the supporting plate is used as a bolt hole to be connected to the support welded on the tower body through a bolt.

[0012] Further, when the triangular frame truss supports the tower plate, the upper chord main beam of the truss needs to have bolt holes corresponding to the bolt holes of the supported tower plate; when the truss supports the filler support grid, the upper chord of the truss needs to be welded with cross limiting plates between the grid blocks to prevent the grid blocks from moving during operation.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, the main beam is 3, arranged in a triangle, and the main beams are arranged in an isosceles triangle in parallel, two main beams are arranged between each two main beams, the web is arranged at a certain angle with the main beam to form a stable triangular structure, and each main beam is connected with a connecting plate and a support at both ends, which has high strength, good rigidity, high stability, good permeability, overcomes the traditional truss installation and design method, and well guarantees the strength and rigidity requirements of the supported tower internals.

[0015] 2. The triangular frame truss girder of the utility model overcomes the deficiency that the existing truss girder needs to be temporarily supported by an additional frame to avoid large deformation of the truss girder during transportation, and the triangular frame truss girder can be transported horizontally to the site with the tower body after being installed in advance, without the cumbersome process of temporarily supporting by an additional frame, greatly shortening the installation and transportation period and greatly reducing the transportation cost and labor cost.

[0016] 3. The triangular frame truss girder of the utility model has a wide range of applications and can be applied to large-diameter plate columns and packing columns, and the strength, rigidity and stability of the triangular frame truss girder are good and are not limited by the maximum tower diameter. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A three-dimensional structure diagram of the triangular frame truss girder convenient for horizontal transportation in a tower is provided in the utility model;

[0018] Figure 2 A three-dimensional structure diagram of the triangular frame truss girder convenient for horizontal transportation in a tower is provided in the utility model; Figure 1 An enlarged view of the triangular frame truss girder A in the utility model;

[0019] Figure 3 A triangular frame truss girder support packing support grid diagram of the triangular frame truss girder convenient for horizontal transportation in a tower is provided in the utility model;

[0020] Figure 4 A triangular frame truss girder support tower tray plate diagram of the triangular frame truss girder convenient for horizontal transportation in a tower is provided in the utility model.

[0021] LEGEND:

[0022] 1. Main beam; 2. Web; 3. Connecting plate I; 4. Rib plate; 5. Support plate; 6. Connecting plate II; 7. Support; 8. Packing support grid; 9. Cross limiting plate; 10. Tower tray plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Referring to Figure 1 and Figure 2The utility model provides an embodiment: a triangular frame truss beam convenient for horizontal transportation in a tower, which comprises a main beam 1, a web 2, a connecting plate one 3, a supporting plate 5 and a rib plate 4, the main beam 1 is 3, is arranged in a triangle, the main beam 1 is arranged in an isosceles triangle in parallel on one above two below, the web 2 is arranged between every two main beams 1, the web 2 is connected with the main beam 1 through the connecting plate one 3 at a certain angle or is directly connected with the main beam 1, and the main beam 1 is arranged in a triangle; every main beam 1 is provided with the connecting plate one 3, the supporting plate 5 and the rib plate 4 at both ends; the connecting plate one 3 is connected with the connecting plate two 6 welded and fixed on the tower body through a bolt; the supporting plate 5 is overlapped with the support 7 welded and fixed on the tower body; the supporting plate 5 is connected and fixed with the support 7 through a bolt; and the stable setting of the truss beam is realized, the main beam 1 is generally set as 3, one is above, two are below, and the three main beams 1 are arranged in an isosceles triangle in space; the three main beams 1 are parallel to each other, and the lower two main beams 1 are on the same horizontal plane and parallel to the upper main beam 1; the cross-sectional dimension of the main beam 1 can be determined through strength calculation; the cross-sectional dimension can be same or different, but the upper surface of the upper chord main beam 1 is required to be a horizontal structure to ensure that the tower inner part can be stably overlapped and the horizontal degree of the tower inner part is ensured; the structure of the main beam 1 can adopt a T-shaped beam or other cross-sectional beam; the T-shaped beam can be a finished T-shaped beam or a T-shaped beam welded and connected by a steel plate or a T-shaped steel beam composed of angle steel beams back to back welded; the other cross-sectional beam includes a circular tube or an I-shaped steel beam composed of channel steel back to back welded and a symmetric cross-sectional beam composed of other section steel back to back welded; when the main beam 1 is a cross-sectional beam composed of back-to-back channel steel or angle steel, the connecting plate one 3 should be clamped in the gap between the back-to-back welded section steel of the main beam 1 and welded and connected; the connecting plate one 3 is connected with the symmetric cross-sectional beam on one hand and is convenient for the connection of the main beam 1 and the web 2 on the other hand; the centroid line of the web 2 between every two main beams 1 and the centroid line of the connected main beam 1 should be kept in the same plane and intersected with the main beam 1; the web 2 is section steel or a circular tube; the included angle between the web 2 and the main beam 1 ranges from 0 to 180 degrees.

[0025] Referring to Figure 1 and Figure 2 the connecting plate one 3 at both ends of the main beam 1 is provided with at least two long round holes at one end; the supporting plate 5 is arranged at the bottom of the connecting plate one 3; the rib plate 4 is arranged at both sides of the connecting plate one 3 to connect the supporting plate 5 and the main beam 1; a round hole is arranged at the connecting plate two sides position on the supporting plate 5, and the round hole on the supporting plate 5 is used as a bolt hole to be connected with the support 7 welded on the tower body through a bolt; the connecting plate two 6 is also provided with a bolt hole matched with the connecting plate one 3 on the upper surface; one end of the connecting plate two 6 is welded on the tower body when installed, and the other end is connected with the connecting plate one 3 at both ends of the main beam 1 of the truss beam through a bolt;

[0026] Referring to Figure 3 and Figure 4When the triangular frame truss supports the tray plate 10, the upper chord main beam 1 of the truss needs to be provided with bolt holes corresponding to the bolt holes provided in the supported tray plate 10, and when installing, the truss can be provided with a corresponding spacing according to the tray span, the three main beams 1 of the triangular frame truss are all supported on the three supports 7 of the tower wall, the connecting plate two 6 at the two ends of each main beam 1 is connected with the connecting plate three on the tower wall through bolts, the bolt holes on the beam supporting plate 5 correspond to the bolt holes on the support 7, the bolt holes can be used to adjust the installation level of the truss in the way of placing a gasket between the supporting plate 5 and the support 7, and the beam supporting plate 5 and the support 7 can be tightly connected through bolts, after the truss is installed, the tray plate 10 is installed on the upper chord main beam 1 of the truss in sequence, and the tray plate 10 is connected with the main beam 1 through bolts. When the triangular frame truss supports the filler supporting grid, the upper chord main beam 1 of the truss does not need to be provided with bolt holes, but cross limiting plates 9 are arranged between the grid blocks to ensure that the grid blocks do not move during actual operation, and the truss is installed in the same way as the tray truss, and after the truss is installed, the filler supporting grid 8 is sequentially arranged on the upper chord main beam 1.

[0027] Working principle: when the triangular frame truss is needed, the triangular frame truss supporting the tray plate 10 overcomes the traditional truss installation and design method, adopts a triangular arrangement of each main beam 1, and a triangular stable frame structure is formed between the main beam 1 and the web 2, so that the truss has high strength, good rigidity and good stability, and is not limited by the large tower diameter; in particular for the tower equipment which needs to be transported horizontally, the cumbersome process of temporarily building a support frame for the truss during transportation is avoided, the supply and transportation cycle is greatly shortened, and the labor cost is greatly reduced; and the main beam 1 and the web 2 of the truss form a triangular structure, which greatly reduces the size of the main beam 1 section of the truss, saves production cost, and meets the strength and small deflection requirements of the tower.

[0028] Finally, it should be pointed out that the above is only a preferred embodiment of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacement of part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A triangular frame truss beam for facilitating horizontal transportation in a tower, comprising a main beam (1), a web member (2), a connecting plate (3), a supporting plate (5) and a reinforcing plate (4), characterized in that: The main beams (1) consist of three beams arranged in a triangular pattern, with one beam on top and two on the bottom in a parallel isosceles triangle. A web member (2) is provided between each pair of main beams (1). The web member (2) is connected to the main beam (1) at a certain angle via a connecting plate (3) or directly connected to the main beam (1). The web member (2) is arranged in a triangular pattern with the main beam (1). Each main beam (1) has a connecting plate (3), a support plate (5), and a stiffening plate (4) at both ends. The connecting plate (3) is connected to the connecting plate (6) welded and fixed to the tower body via bolts. The support plate (5) overlaps with the support (7) welded and fixed to the tower body via bolts, thereby achieving a stable setting of the truss beam.

2. A triangular frame truss beam for facilitating horizontal transport within a tower according to claim 1, characterized in that: The main beam (1) is generally set to 3 beams, one on top and two on the bottom, arranged in an isosceles triangle in space. The three main beams (1) are parallel to each other, and the two lower main beams (1) are on the same horizontal plane and parallel to the upper main beam (1). The cross-sectional dimensions of the main beam (1) can be determined by strength calculation. The cross-sectional dimensions can be the same or different, but the upper surface of the upper chord main beam (1) is required to be a horizontal structure to ensure that the internal components of the tower can be stably connected and to ensure the horizontality of the internal components of the tower. The structure of the main beam (1) can be a T-beam or other cross-section beams. The T-beam can be a finished T-beam or a T-beam welded from steel plates, or a T-beam formed by welding angle steel beams back to back. Other cross-section beams include round pipes or I-beams formed by welding channel steel back to back, as well as symmetrical cross-section beams formed by welding other types of steel back to back.

3. A triangular frame truss beam for facilitating horizontal transport within a tower according to claim 1, wherein: When the main beam (1) is a cross-section beam composed of back-to-back channel steel or angle steel, the connecting plate (3) should be clamped in the gap between the back-to-back welded steel sections of the main beam (1) and welded together. This connecting plate (3) connects the symmetrical cross-section beams on the one hand, and facilitates the connection between the main beam (1) and the web members (2) on the other hand.

4. A triangular frame truss beam for facilitating horizontal transport within a tower according to claim 1, wherein: The centroid of the web member (2) between each pair of main beams (1) should be in the same plane as the centroid of the main beam (1) it is connected to and intersect with the main beam (1); the web member (2) is a steel section or a round tube, and the included angle between the web member (2) and the main beam (1) is between 0° and 180°.

5. A triangular frame truss beam for facilitating horizontal transport within a tower according to claim 1, wherein: The connecting plates (3) at both ends of the main beam (1) each have at least two elongated holes at one end. The bottom of the connecting plate (3) is provided with a support plate (5), and the two sides of the connecting plate (3) are provided with stiffening plates (4) to connect the support plate (5) and the main beam (1). The support plate (5) has round holes on both sides of the connecting plate. The round holes on the support plate (5) are used as bolt holes to connect with the support (7) welded to the tower body by bolts.

6. A triangular frame truss beam for facilitating horizontal transport within a tower according to claim 1, wherein: The second connecting plate (6) also has bolt holes that match the first connecting plate (3). When installing the second connecting plate (6), one end without bolt holes is welded to the tower body, and the other end is connected to the first connecting plate (3) with elongated holes at both ends of the truss beam main beam (1) by bolts.

7. A triangular frame truss beam for facilitating horizontal transport within a tower according to claim 1, wherein: When the triangular frame truss girder supports the tray plate (10), the truss girder top chord girder (1) needs to be provided with bolt holes corresponding to the bolt holes of the supported tray plate (10); when the truss girder supports the filler supporting grid (8), the truss girder top chord needs to be welded with cross limiting plates (9) between the grid blocks to prevent the grid blocks from moving during operation.

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