Releasable deformation support for large-column-distance pipe frame of power plant, construction method and pipe frame

Abstract

The invention belongs to the technical field of power plant pipe frames, and provides a releasable deformation support for a large-column-distance pipe frame of a power plant, a construction method and a pipe frame, the releasable deformation support comprises a first truss stand column and a second truss stand column which are located on different pipe frames respectively, and a connecting assembly is connected between the first truss stand column and the second truss stand column; through holes are formed in the connecting columns, and the second truss stand columns are arranged in the through holes in a sleeved mode; space is reserved between the through hole and the outer wall of the second truss stand column, and the pin shaft hole is a long hole with the length direction parallel to the axial direction of the second truss stand column. The through holes and the long holes can allow the second truss stand columns to release internal force in the horizontal direction and the vertical direction respectively, and the problem that the stand columns are difficult to connect due to the fact that the distance between every two sections of pipe frames is uncertain and the terrain height difference exists is solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of power plant pipe rack, and particularly relates to a power plant large-column-distance pipe rack releasable deformation support, a construction method and the pipe rack. BACKGROUND

[0002] The plant area comprehensive pipe rack of a thermal power plant bears the role of supporting and conveying process pipelines and cables. At present, a large-column-distance truss type pipe rack with a column distance greater than 20 m is commonly used in engineering, and the number of steel columns is small, and the shape is beautiful. Due to the limitation of the plant area geological and topographical conditions and the influence of other buildings and structures, it is difficult to arrange the foundation of the comprehensive pipe rack, and the pipe rack is too long, which cannot meet the needs of the length direction deformation of the super-long pipe rack.

[0003] Corresponding to the power plant constructed by cutting mountains and filling valleys according to the mountain situation, the plant area elevation difference is relatively large, and the geological conditions are complex, which leads to large top settlement deformation of adjacent pipe racks. Different foundation ways are used for the same section of pipe rack, which causes the steel columns at both ends of the single-span truss of the comprehensive pipe rack to be located in different foundation treatment areas, so that the foundations at both ends of the pipe rack produce uneven vertical and horizontal displacement. The internal force generated by the horizontal and vertical deformation needs to be released at a suitable position.

[0004] In the traditional technology, the super-long pipe rack is processed in sections, and a double-column type is used to disconnect, which leads to a large number of pipe rack sections, a large amount of columns and foundations, and is not economical. When the column foundations of the same section of pipe rack are arranged on different foundations, the foundations need to be treated to meet the requirements of the settlement difference between the pipe racks, which increases the number of foundations and columns and the amount of foundation treatment. The way of connecting the columns to reduce the foundations cannot effectively release the internal force generated by the horizontal and vertical deformation after the connection because of the long length of each section of pipe rack, the uncertain distance between different pipe racks and the existence of the elevation difference, and the connection between the columns is difficult. SUMMARY

[0005] In order to solve the above problems, the present application provides a power plant large-column-distance pipe rack releasable deformation support, a construction method and the pipe rack. A through hole is formed in the connecting column, and a second truss column is sleeved in the through hole. A space is reserved between the through hole and the outer wall of the second truss column, and a pin hole is a long hole with a length direction parallel to the axial direction of the second truss column. The through hole and the long hole can allow the second truss column to release internal force in the horizontal direction and the vertical direction respectively, and solve the problem of difficult connection between the columns due to the uncertain distance between each section of pipe rack and the existence of the elevation difference.

[0006] In order to achieve the above purpose, in a first aspect, the present application provides a power plant large-column-distance pipe rack releasable deformation support, which adopts the following technical scheme: A releasable deformable support for a power plant large-spacing pipe rack includes a first truss column and a second truss column located on different pipe racks, and a connecting component is connected between the first truss column and the second truss column. The connecting assembly includes a connecting column that can be sleeved on the second truss column, a first stiffening plate with one end disposed on the connecting column and the other end disposed on the first truss column, and a pin hole opened on the connecting column. The connecting column has a through hole, and the second truss column is fitted into the through hole; a space is reserved between the through hole and the outer wall of the second truss column, and the pin hole is an elongated hole parallel to the axial direction of the second truss column; the through hole and the elongated hole allow the second truss column to release internal forces in the horizontal and vertical directions respectively.

[0007] Furthermore, the first truss column and the second truss column are respectively located at the ends of different sections of the pipe frame, and the end of the first truss column away from the pipe frame is connected to a pile foundation.

[0008] Furthermore, the connecting column is connected to the second truss column by a pin, and the pin is located inside the elongated hole.

[0009] Furthermore, a second stiffening plate is provided on the second truss column, and a third stiffening plate is provided at the end of the connecting column near the second stiffening plate. An adjustment assembly is provided between the second stiffening plate and the third stiffening plate.

[0010] Furthermore, the adjusting assembly includes a screw rod disposed on the connecting post, and a first nut and a second nut that can be disposed on the screw rod.

[0011] Furthermore, the first nut and the second nut are located on both sides of the second stiffening plate.

[0012] Furthermore, the third stiffening plate is fitted onto the second truss column.

[0013] Furthermore, the pipe frame has at least two sections, including an upper chord, a lower chord, and an inclined bar disposed between the upper chord and the lower chord.

[0014] To achieve the above objectives, in a second aspect, the present invention also provides a construction method for releasable deformable supports for large-spacing pipe racks in power plants, employing the following technical solution: A construction method for a releasable deformable support for a power plant large-spacing pipe rack, using the releasable deformable support for a power plant large-spacing pipe rack as described in the first aspect, comprising: the through hole and the elongated hole allowing the second truss column to release internal forces in the horizontal and vertical directions respectively.

[0015] To achieve the above objectives, in a third aspect, the present invention also provides a large-spacing pipe rack for power plants, employing the following technical solution: A power plant large-spacing pipe rack uses the releasable deformable support for power plant large-spacing pipe racks as described in the first aspect.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention has a through hole in the connecting column, and the second truss column is fitted into the through hole; a space is reserved between the through hole and the outer wall of the second truss column, and the pin hole is an elongated hole parallel to the axial direction of the second truss column in the length direction; the through hole and the elongated hole allow the second truss column to release internal forces in the horizontal and vertical directions respectively, which solves the problem of difficulty in connecting columns due to the uncertain distance between each section of the pipe frame and the existence of terrain elevation differences; 2. When connecting the components, the second truss column is directly inserted into the connecting column. The node is weld-free and can release horizontal deformation. The horizontal structure can release the amount of expansion and contraction deformation, which can reduce the number of supporting columns for ultra-long pipe supports. At the same time, there is no welded connection, the degree of assembly is high, and the construction is convenient.

[0017] 3. The second truss column of the present invention is provided with a second stiffening plate, and a third stiffening plate is provided at the end of the connecting column near the second stiffening plate. An adjustment component is provided between the second stiffening plate and the third stiffening plate. After the second truss column is sleeved on the connecting column, the second stiffening plate and the third stiffening plate are fixed by the adjustment component, thereby improving stability.

[0018] 4. In terms of construction and economy, this invention, compared with traditional steel bracket structures, uses standardized, universal structural modules to form a structural system. These modules are prefabricated in the factory and can be mass-produced, reducing on-site welding and assembly work. It solves the problem of longitudinal deformation in ultra-long trusses, releasing longitudinal constraints and avoiding the impact of deformation on the internal forces of the pipe rack structure. The pipe rack can be made longer, reducing the need for double columns or segmented installations, while also reducing the amount of foundation and ground treatment work. The structural layout is more flexible, and pipe utilization is more convenient. The free deformation in the vertical direction is more suitable for factory areas with varying elevations. Nodes and connections to columns are directly processed in the factory and installed on-site. No cutting or welding is required, greatly increasing construction convenience, reducing construction difficulty, and shortening the construction cycle. Attached Figure Description

[0019] The accompanying drawings, which form part of this embodiment, are used to provide a further understanding of this embodiment. The illustrative embodiments and their descriptions are used to explain this embodiment and do not constitute an improper limitation of this embodiment.

[0020] Figure 1This is a schematic diagram of the pipe rack structure according to Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the support structure in Embodiment 1 of the present invention; Figure 3 Regarding Embodiment 1 of the present invention Figure 2 Top view; Figure 4 This is a schematic diagram of the adjusting component structure according to Embodiment 1 of the present invention; Among them, 1. Truss; 101. Upper chord; 102. Lower chord; 103. Diagonal member; 104. First truss column; 105. Second truss column; 106. Connecting assembly; 1061. Connecting column; 1062. First stiffening plate; 1063. Elongated hole; 1064. Pin; 1065. Second stiffening plate; 1066. Third stiffening plate; 1067. Adjusting assembly; 10671. Screw; 10672. First nut; 10673. Second nut; 2. Foundation; 3. Pile foundation. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0023] Example 1: like Figure 1 , Figure 2 and Figure 3 As shown, this embodiment provides a releasable deformable support for a power plant's large-spacing pipe rack. The truss 1 / pipe rack can be arranged into standard trusses of the same length, taking into account the characteristics of the foundation's elevation and ground terrain, facilitating standardized factory processing. The joints are fabricated in one go, simplifying on-site installation. The joints employ a prefabricated connection method, with the column bases and columns connected by pins to accommodate both horizontal and vertical deformation.

[0024] The support includes a first truss column 104 and a second truss column 105 located on different tube frames 1, and a connecting assembly 106 connects the first truss column 104 and the second truss column 105.

[0025] The pipe frame 1 has at least two sections, including an upper chord 101, a lower chord 102, and an inclined bar 103 disposed between the upper chord 101 and the lower chord 102.

[0026] The first truss column 104 and the second truss column 105 are respectively located at the ends of different sections of the pipe frame. The end of the first truss column 104 away from the pipe frame 1 is connected to a pile foundation 3. The first truss column 104 and the second truss column 105 are supported by the same pile foundation 3, which reduces the number of foundations used. Some of the first truss columns 104 are also connected to the foundation 2.

[0027] The connecting assembly 106 includes a connecting post 1061, a first stiffening plate 1062, an elongated hole 1063, a pin 1064, a second stiffening plate 1065, a third stiffening plate 1066, and an adjusting assembly 1067.

[0028] The connecting column 1061 has a through hole. For example, the connecting column 1061 adopts a box-shaped structure, and the second truss column 105 is sleeved in the through hole. A space is reserved between the through hole and the outer wall of the second truss column 105. One end of the first stiffening plate 1062 is set on the connecting column 1061, and the other end is set on the first truss column 104.

[0029] By using directly inserted box-type connecting columns 1061 as support points, the horizontal displacement of the steel structure caused by the upper thermal displacement pipeline is resolved. The pin-connection between the support and connecting columns 1061, with a reserved space between the pin and the box structure, addresses the settlement issue caused by different foundation treatments for adjacent columns under the steel structure. This solves the problem of excessively long steel structures and the inability to install steel column foundations in complex terrain conditions. The use of a truss structure for ultra-long structures significantly reduces the number of underground foundations and columns, saving construction costs. The pin-connection nodes are factory-fabricated, with mechanical connections used on-site, reducing welding work and shortening the construction period.

[0030] During connection, the second truss column 105 is directly inserted into the connecting column 1061. In this embodiment, the node form is weld-free, and the second truss column 1062 is directly inserted into the connecting column 1061, which can release horizontal deformation. The horizontal structure can release the amount of expansion and contraction deformation, which can reduce the number of supporting columns in the structure of ultra-long pipe supports. At the same time, the absence of welding connection results in a high degree of assembly and convenient construction.

[0031] The pin hole is an elongated hole 1063 whose length direction is parallel to the axial direction of the second truss column 105; the connecting column 1061 and the second truss column 105 are connected by a pin 1064, which is located inside the elongated hole 1063; the pin connection can release vertical deformation and adapt to deformation caused by uneven settlement of the foundation.

[0032] A second stiffening plate 1065 is provided on the second truss column 105, and a third stiffening plate 1066 is provided at one end of the connecting column 1061 near the second stiffening plate 1065. The third stiffening plate 1066 is sleeved on the second truss column 105, and an adjustment component 1067 is provided between the second stiffening plate 1065 and the third stiffening plate 1066. After the second truss column 105 is sleeved on the connecting column 1061, the second stiffening plate 1065 and the third stiffening plate 1066 are fixed by the adjustment component 1067, thereby improving stability.

[0033] Optionally, the adjusting assembly 1067 includes a screw 10671 disposed on the connecting post 1061, and a first nut 10672 and a second nut 10673 disposed on the screw 10671; the first nut 10672 and the second nut 10673 are respectively located on both sides of the second stiffening plate 1065.

[0034] In terms of construction and economy, this embodiment, compared with the traditional steel bracket structure, uses standardized, universal structural modules to form a structural system, which is prefabricated in the factory and can be mass-produced, reducing the amount of on-site welding and assembly work. It solves the problem of longitudinal deformation of ultra-long trusses, releases longitudinal constraints, avoids the impact of deformation on the internal forces of the pipe rack structure, allowing for longer pipe racks, reducing the need for double columns or segmented setups, and also reducing the amount of foundation and ground treatment work. The structural layout is more flexible, and pipe utilization is more convenient. The free deformation in the vertical direction is more suitable for factory areas with varying elevations. Nodes and connections to columns are directly fabricated in the factory and installed on-site. No cutting or welding is required, greatly increasing the convenience of construction, reducing construction difficulty, and shortening the construction cycle.

[0035] In this embodiment, the first truss column 104 and the second truss column 105 are steel pipe columns. In other embodiments, the steel pipe column can be replaced with steel columns or concrete columns of other shapes; the connecting column 1061 can be replaced with a round pipe; the pin connection can be changed to a similar bolt connection, or welding of steel plate to box-shaped steel column.

[0036] Example 2: This embodiment provides a construction method for a releasable deformable support for a power plant's large column spacing pipe rack. It uses the releasable deformable support for a power plant's large column spacing pipe rack as described in Embodiment 1, including: the through hole and the elongated hole allow the second truss column to release internal forces in the horizontal and vertical directions respectively.

[0037] Example 3: This embodiment provides a power plant large column spacing pipe rack, which uses the releasable deformable support for the power plant large column spacing pipe rack as described in Embodiment 1.

[0038] The above description is merely a preferred embodiment of this practice and is not intended to limit the scope of this practice. Various modifications and variations can be made to this practice by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this practice should be included within the protection scope of this practice.

Claims

1. A releasable deformation support for a power plant's large-spacing pipe rack, characterized in that: It includes a first truss column and a second truss column located on different tube racks, and a connecting component connects the first truss column and the second truss column. The connecting assembly includes a connecting column that can be sleeved on the second truss column, a first stiffening plate with one end disposed on the connecting column and the other end disposed on the first truss column, and a pin hole opened on the connecting column. The connecting column has a through hole, and the second truss column is fitted into the through hole; a space is reserved between the through hole and the outer wall of the second truss column, and the pin hole is an elongated hole parallel to the axial direction of the second truss column; the through hole and the elongated hole allow the second truss column to release internal forces in the horizontal and vertical directions respectively.

2. The releasable deformation support for a power plant large-spacing pipe rack as described in claim 1, characterized in that, The first truss column and the second truss column are respectively installed at the ends of different sections of the pipe frame, and the end of the first truss column away from the pipe frame is connected to a pile foundation.

3. The releasable deformation support for a power plant large-spacing pipe rack as described in claim 1, characterized in that, The connecting column is connected to the second truss column by a pin, and the pin is located inside the elongated hole.

4. The releasable deformation support for a power plant large-spacing pipe rack as described in claim 1, characterized in that, A second stiffening plate is provided on the second truss column, and a third stiffening plate is provided at the end of the connecting column near the second stiffening plate. An adjustment assembly is provided between the second stiffening plate and the third stiffening plate.

5. The releasable deformation support for a power plant large-spacing pipe rack as described in claim 4, characterized in that, The adjusting assembly includes a screw rod disposed on the connecting post, and a first nut and a second nut that can be disposed on the screw rod.

6. The releasable deformation support for a power plant large-spacing pipe rack as described in claim 5, characterized in that, The first nut and the second nut are located on both sides of the second stiffening plate, respectively.

7. The releasable deformation support for a power plant large-spacing pipe rack as described in claim 4, characterized in that, The third stiffening plate is fitted onto the second truss column.

8. The releasable deformation support for a power plant large-spacing pipe rack as described in claim 1, characterized in that, The pipe frame has at least two sections, including an upper chord, a lower chord, and an inclined bar disposed between the upper chord and the lower chord.

9. A construction method for releasable deformation supports of large-spacing pipe racks in power plants, characterized in that: The power plant large-spacing pipe rack releasable deformation support as described in any one of claims 1-8 is used, comprising: the through hole and the elongated hole allowing the second truss column to release internal forces in the horizontal and vertical directions respectively.

10. A power plant large-spacing pipe rack, characterized in that, The releasable deformable support for the large column spacing pipe rack of the power plant, as described in any one of claims 1-8, is used.

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