A three-dimensional dynamic compensation air duct device and installation method thereof

Abstract

The present invention discloses a three-dimensional dynamic compensation air duct device and an installation method thereof. The compensation air duct device is used to connect the upper and lower structures of the air duct of the seismic isolation layer of the seismic isolation building where the upper and lower structures are completely disconnected. The flexible air duct body skeleton is coated on the outer surface of the flexible air duct body to form a flexible support connector, which can ensure that when the upper structure is deformed, the ventilation cross-section of the air duct shaft maintains the ventilation area to the maximum extent. A telescopic support device is provided between the upper connecting flange and the lower connecting flange to form a self-supporting telescopic structure. The upper surface of the upper connecting flange is sealed and connected to the lower part of the upper wellhead of the seismic isolation layer air duct, and the lower surface of the lower connecting flange is sealed and connected to the upper part of the lower wellhead of the seismic isolation layer air duct. When the upper building is displaced, the air duct is telescopically deformed. After the displacement of the building is completed, the telescopic support device pulls the flexible air duct body back to the center plane of the air duct, thereby solving the problem that when the upper building of the seismic isolation building is displaced, the deformation of the rigidly connected air duct shaft material cannot meet the deformation and breaks.

Description

Technical Field

[0001] The invention belongs to the field of building air duct installation, and in particular relates to a three-dimensional dynamic compensation air duct device and an installation method thereof. Background Art

[0002] Seismic isolation buildings install seismic isolation devices at the foundation or between floors of the building to form a seismic isolation layer. The seismic isolation device can consume earthquake energy and effectively ensure the safety of the upper structure and internal personnel and equipment. Seismic isolation buildings are composed of three parts: the upper structure, the seismic isolation layer and the lower structure. Under the action of earthquake waves or a certain horizontal load, the upper structure will experience horizontal displacement.

[0003] The architectural design requires that the air ducts that pass through the seismic isolation layer must have a compensation function to achieve spatial decoupling of the seismic isolation building structure. However, the "Quality Acceptance Code for Construction of Ventilation and Air Conditioning Engineering" GB50243-2016, the "Construction Code for Ventilation and Air Conditioning Engineering" GB50738-2011, the "Technical Code for Ventilation Ducts" JGJ141, and professional atlases do not have specific requirements and mature practices. The only industry standard "Flexible Ducts for Seismic Isolation of Buildings" is limited to circular ducts with a diameter of less than 200 mm, which is far different from the rectangular ducts with a specification of 1400×620 (mm) that pass through the seismic isolation layer of this project in terms of shape and specifications, and cannot meet the engineering needs.

[0004] At present, in the process of installing and constructing the wind ducts in the wind ducts of the wind ducts in the wind ducts of the wind ducts in the wind ducts of the wind ducts, the metal wind ducts are fixed at the wind ducts of the wind ducts in the wind ducts. The wind ducts are rigidly fixed and flanged in the wind ducts of the wind ducts. When the wind ducts in the wind ducts are subjected to a certain horizontal load, the wind ducts break in the wind ducts of the wind ducts. This affects the ventilation and smoke exhaust performance of the building. The wind ducts rigidly fixed in the wind ducts of the wind ducts are complex to install and construct, and difficult to repair after damage. Summary of the invention

[0005] The purpose of the present invention is to provide a three-dimensional dynamic compensation air duct device and its installation method to solve the problem that the rigid connection of the air duct of the seismic isolation layer of the seismic isolation building cannot meet the displacement of the upper structure of the seismic isolation building. The present invention can meet the normal use of ventilation and smoke exhaust functions after an earthquake.

[0006] In order to achieve the above object, the present invention adopts the following technical scheme:

[0007] A three-dimensional dynamic compensation air duct device includes a flexible air duct body, a flexible air duct body frame, an upper connecting flange and a lower connecting flange. The flexible air duct body frame is covered on the outer surface of the flexible air duct body, the upper connecting flange is fixedly connected to the outer side of the upper end of the flexible air duct body, and the lower connecting flange is fixedly connected to the outer side of the lower end of the flexible air duct body; a telescopic support device is provided between the upper connecting flange and the lower connecting flange; the lower surface of the lower connecting flange is sealedly connected to the upper part of the lower wellhead of the seismic isolation layer air duct, and the upper surface of the upper connecting flange is sealedly connected to the lower part of the upper wellhead of the seismic isolation layer air duct.

[0008] Furthermore, an upper support plate is provided at the lower part of the upper wellhead of the seismic isolation layer air duct, and the lower surface of the upper support plate is arranged horizontally; a lower support plate is provided at the upper part of the lower wellhead of the seismic isolation layer air duct, and the lower support plate adopts an angle steel structure, and the inner angle surfaces of the lower support plate are respectively in contact with the upper surface and side surface of the lower wellhead of the seismic isolation layer air duct.

[0009] Furthermore, a positioning screw is provided at the upper portion of the lower support plate, a through hole which cooperates with the positioning screw is provided at the lower end of the lower connecting flange, and the lower connecting flange is fastened to the positioning screw by a nut.

[0010] Furthermore, a sealing strip is provided between the upper surface of the upper connecting flange and the lower portion of the upper wellhead of the wind duct of the seismic isolation layer.

[0011] Furthermore, the sealing strip adopts a compensating Q-shaped sealing strip.

[0012] Furthermore, a sealing gasket layer is provided between the lower connecting flange and the upper portion of the lower wellhead of the wind duct of the seismic isolation layer.

[0013] Furthermore, the telescopic support device includes an upper spring pad fixed to the lower end of the upper connecting flange and a lower spring pad fixed to the upper end of the lower connecting flange, and a compression spring is provided between the upper spring pad and the lower spring pad.

[0014] Furthermore, both the upper connecting flange and the lower connecting flange are angle steel flanges.

[0015] Furthermore, a plurality of pulling and pressing devices are evenly distributed around the outer side of the flexible air duct body, the pulling and pressing devices include an upper pulling and pressing seat fixed to the lower end of the upper connecting flange and a lower pulling and pressing seat fixed to the upper end of the lower connecting flange, pull rings are provided on the upper pulling and pressing seat and the lower pulling and pressing seat, a telescopic pull rod is provided between the upper pulling and pressing seat and the lower pulling and pressing seat, the telescopic pull rod includes a pull rod with an external thread at one end and a pull rod with an internal thread at the other end, and the pull rod with the external thread and the pull rod with the internal thread are threadedly connected.

[0016] A method for installing a three-dimensional dynamic compensation air duct device comprises the following steps:

[0017] Step 1), an upper support plate is horizontally arranged at the lower end of the upper wellhead of the wind duct of the seismic isolation layer, and a lower support plate is horizontally arranged at the upper end of the lower wellhead of the wind duct of the seismic isolation layer;

[0018] Step 2), compress the upper connecting flange and the lower connecting flange through the tension and compression device and place them in the air duct to be installed, and align the upper connecting flange and the lower connecting flange with the upper wellhead of the seismic isolation layer air duct and the lower wellhead of the seismic isolation layer air duct respectively;

[0019] Step 3) align the lower connecting flange with the installation surface of the lower wellhead of the seismic isolation layer air duct and remove the tension and compression device. The upper connecting flange contacts the lower end of the lower wellhead of the seismic isolation layer air duct under the support of the spring of the telescopic support device to complete the installation of the three-dimensional dynamic compensation air duct device.

[0020] Compared with the prior art, the present invention has the following beneficial technical effects:

[0021] The present invention discloses a three-dimensional dynamic compensation duct device, which is composed of a flexible duct body, a flexible duct body skeleton, an upper connecting flange and a lower connecting flange. The compensation duct device is used to connect the upper and lower structures of the seismic isolation layer duct of the seismic isolation building where the seismic isolation layer duct is completely disconnected. The flexible duct body skeleton is coated on the outer surface of the flexible duct body to form a flexible support connector. The upper connecting flange is fixedly connected to the outer side of the upper end of the flexible duct body, and the lower connecting flange is fixedly connected to the outer side of the lower end of the flexible duct body. A telescopic support device is provided between the upper connecting flange and the lower connecting flange to form a self-supporting telescopic structure. The upper surface of the upper connecting flange is sealedly connected to the lower part of the upper wellhead of the seismic isolation layer duct, and the lower surface of the lower connecting flange is sealedly connected to the upper part of the lower wellhead of the seismic isolation layer duct. When the upper building is displaced, the duct is telescopically deformed. After the displacement of the building is completed, the telescopic support device pulls the flexible duct body back to the center plane of the duct, thereby solving the problem that the deformation of the rigidly connected duct well material cannot meet the deformation and breaks when the upper building of the seismic isolation building is displaced. The flexible duct body frame is covered on the outer surface of the flexible duct body, which can ensure that when the upper structure is deformed, the ventilation cross-section of the air duct shaft maintains the ventilation area to the maximum extent, and can ensure the normal ventilation function of the air duct when the upper part of the building is displaced.

[0022] Furthermore, a positioning screw is provided at the upper part of the lower support plate, and a through hole which cooperates with the positioning screw is provided at the lower end of the lower connecting flange. The lower connecting flange and the positioning screw are fastened together by nuts, and the angle steel structure of the lower support plate and the lower wellhead of the isolation layer air duct are upper-limited in the horizontal plane to improve the stability of the connection between the lower connection method and the lower wellhead of the isolation layer air duct.

[0023] Furthermore, an upper support plate is provided at the lower part of the upper wellhead of the seismic isolation layer air duct, and the lower surface of the upper support plate is arranged horizontally; a lower support plate is provided at the upper part of the lower wellhead of the seismic isolation layer air duct, and the lower support plate adopts an angle steel structure. The lower support plate is fixedly connected to the lower wellhead of the seismic isolation layer air duct by bolts, and the upper surface of the lower support plate is arranged horizontally, which can effectively prevent the upper flange from sliding along the upper bearing in the horizontal plane and tearing the air duct during an earthquake.

[0024] The present invention has simple installation steps, realizes the displacement compensation function of the seismic isolation layer ventilation system through the vertical support spring, and the flexible air duct body skeleton in the compensation air duct effectively avoids the reduction of the effective ventilation cross-section of the air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall installation structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the installation structure of the telescopic support device of the present invention.

[0027] Figure 3 It is a side view of the present invention.

[0028] Figure 4 It is a top view of the present invention.

[0029] Figure 5 It is a schematic diagram of the structure of the flexible air duct body of the present invention.

[0030] Among them, 1. upper wellhead of the seismic isolation layer air duct; 2. upper support plate; 3. sealing strip; 4. upper spring cushion; 5. upper connecting flange; 6-1. flexible air duct body frame; 6-2. flexible air duct body; 7. compression spring; 8. lower spring cushion; 9. lower connecting flange; 10. sealing gasket layer; 11. lower support plate; 12. lower wellhead of the seismic isolation layer air duct; 13. upper pull-up pressure seat; 14. lower pull-up pressure seat; 15. telescopic pull rod. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0032] like Figures 1 to 5 As shown, a three-dimensional dynamic compensation duct device includes a flexible duct body 6-2, a flexible duct body frame 6-1, an upper connecting flange 5 and a lower connecting flange 9. The flexible duct body frame 6-1 is coated on the outer surface of the flexible duct body 6-2. The upper connecting flange 5 is fixedly connected to the outer side of the upper end of the flexible duct body 6-2, and the lower connecting flange 9 is fixedly connected to the outer side of the lower end of the flexible duct body 6-2. A telescopic support device is provided between the upper connecting flange 5 and the lower connecting flange 9. The lower surface of the lower connecting flange 9 is sealedly connected to the upper part of the lower wellhead 12 of the seismic isolation layer duct, and the upper surface of the upper connecting flange 5 is sealedly connected to the lower part of the upper wellhead 1 of the seismic isolation layer duct. The flexible duct body adopts silicon carbon refractory cloth to overcome the problem that the rigid connection duct well material of the seismic isolation building cannot meet the deformation and fracture when the upper building is displaced.

[0033] A plurality of telescopic support devices are arranged circumferentially on the outer side of the flexible duct body 6-2; a plurality of tension and compression devices are evenly distributed around the outer side of the flexible duct body 6-2, the tension and compression devices include an upper tension and compression seat 13 fixed to the lower end of the upper connecting flange 5 and a lower tension and compression seat 14 fixed to the upper end of the lower connecting flange 9, a pull ring is arranged on the upper tension and compression seat 13 and the lower tension and compression seat 14, a telescopic pull rod 15 is arranged between the upper tension and compression seat 13 and the lower tension and compression seat 14, the telescopic pull rod 15 includes a pull rod with an external thread at one end and a pull rod with an internal thread at the other end, the pull rod with an external thread and the pull rod with an internal thread The threaded tie rod is threadedly connected, and the other end of the tie rod with external thread and the other end of the tie rod with internal thread are both provided with a hook. When the compensation air duct device is installed, the hooks at both ends of the telescopic tie rod 15 are respectively fixed to the pull rings on the upper pull-press seat 13 and the lower pull-press seat 14, and then the tie rod with external thread and the tie rod with internal thread are rotated, the length of the telescopic tie rod 15 becomes shorter, the upper connecting flange 5 and the lower connecting flange 9 are compressed, and the positioning through hole of the lower connecting flange 9 of the compensation air duct is aligned with the lower wellhead 12 of the seismic isolation layer air duct, and then bolted and fixed. After the air duct is adjusted flush with the interface, the telescopic tie rod 15 is removed. The upper end interface of the compensation air duct is extruded and sealed.

[0034] The flexible duct body frame 6-1 is covered on the outer surface of the flexible duct body 6-2 to form a supporting structure of the flexible duct body 6-2, ensuring that when the upper structure is deformed, the ventilation cross-section of the duct shaft maintains the ventilation area to the maximum extent, and the normal ventilation function of the duct can be guaranteed when the upper part of the building is displaced.

[0035] The upper connecting flange 5 and the lower connecting flange 9 are both angle steel flanges.

[0036] An upper support plate 2 is provided at the lower part of the upper wellhead 1 of the seismic isolation layer air duct. The upper support plate 2 adopts an angle steel structure. The upper support plate 2 is fixedly connected to the upper wellhead 1 of the seismic isolation layer air duct by bolts, and the lower surface of the upper support plate 2 is horizontally arranged; a lower support plate 11 is provided at the upper part of the lower wellhead 12 of the seismic isolation layer air duct. The lower support plate 11 adopts an angle steel structure. The lower support plate 11 is covered around the upper end of the lower wellhead 12 of the seismic isolation layer air duct, the upper surface of the lower support plate 11 is horizontally arranged, and the lower support plate 11 is flush with the side of the lower wellhead 12 of the seismic isolation layer air duct.

[0037] A positioning screw is provided on the upper part of the lower support plate 11, and a through hole is provided at the lower end of the lower connecting flange 9 to cooperate with the positioning screw. The lower connecting flange 9 is fastened to the positioning screw by a nut. According to the actual working conditions, a plurality of positioning screws are evenly distributed circumferentially on the upper part of the lower support plate 11 to ensure a sealed connection between the lower connecting flange 9 and the upper part of the lower support plate 11. The angle steel structure of the lower support plate 11 and the upper end of the lower wellhead 12 of the wind duct of the seismic isolation layer form a covering structure to prevent the lower support plate 11 from sliding horizontally. The positioning screw is fixed to the upper part of the lower support plate 11 by tapping.

[0038] A sealing strip 3 is provided between the upper surface of the upper connecting flange 5 and the lower part of the upper wellhead 1 of the wind duct of the seismic isolation layer. The sealing strip 3 is a compensating Q-shaped sealing strip.

[0039] A sealing gasket layer 10 is provided between the lower connecting flange 9 and the upper portion of the lower wellhead 12 of the seismic isolation layer air duct.

[0040] The telescopic support device comprises an upper spring cushion seat 4 fixed to the lower end of the upper connecting flange 5 and a lower spring cushion seat 8 fixed to the upper end of the lower connecting flange 9 , and a compression spring 7 is provided between the upper spring cushion seat 4 and the lower spring cushion seat 8 .

[0041] The method for installing three-dimensional dynamic compensation air ducts in seismic isolation buildings based on the above-mentioned compensation air duct device comprises the following steps:

[0042] Step 1) An upper support plate is horizontally set at the lower end of the upper wellhead of the seismic isolation layer air duct, and a lower support plate is horizontally set at the upper end of the lower wellhead of the seismic isolation layer air duct to provide an installation foundation and sliding plane for the compensation air duct. The upper support plate and the lower support plate use angle steel flanges, and the angle steel flanges are wrapped on both sides of the end face and sealed with angle steel.

[0043] The flexible air duct body is cut into a rectangle using silicon carbon refractory cloth, and steel chisels are equidistantly placed on the inside of the air duct and pass through the C-shaped slots; the rectangular steel chisels serve as the skeleton of the flexible air duct.

[0044] Step 2), a sealing strip is arranged on the upper end surface of the upper connecting flange, the sealing strip interface adopts a tongue-and-groove structure, and a sealing gasket is arranged on the upper end surface of the wellhead under the wind duct of the seismic isolation layer;

[0045] Step 3), compress the upper connecting flange and the lower connecting flange by a tension and compression device and place them in the air duct to be installed, and align the upper connecting flange and the lower connecting flange with the upper wellhead of the seismic isolation layer air duct and the lower wellhead of the seismic isolation layer air duct respectively;

[0046] Step 4) After fixing the lower connecting flange and the upper part of the lower support plate with a positioning screw through a nut, remove the tension and compression device. The upper connecting flange contacts the lower end of the lower wellhead of the seismic isolation layer air duct under the support of the spring of the telescopic support device, completing the installation of the three-dimensional dynamic compensation air duct device.

[0047] The structural principle and use steps of the present invention are further described below in conjunction with the accompanying drawings:

[0048] When passing through the seismic isolation layer, a three-dimensional dynamic compensation air duct is used, and the lower surface of the lower connecting flange 9 is sealed and connected to the upper part of the lower wellhead 12 of the seismic isolation layer air duct, and the upper surface of the upper connecting flange 5 is sealed and connected to the lower part of the upper wellhead 1 of the seismic isolation layer air duct. The positioning is corrected and aligned up and down to ensure that the lower connecting flange 9 is accurately inserted into the reserved bolts and the bolts are locked and fixed; the upper connecting flange 5 of the compensation air duct and the upper wellhead 1 of the seismic isolation layer air duct are tightened by a telescopic support device, and are sealed and connected by a compensating Q-shaped sealing strip. The sealing connection is squeezed by relying on the supporting force of the telescopic support device of the compensation air duct.

Claims

1. A three-dimensional dynamic compensation air duct device, characterized in that: The flexible duct body comprises a flexible duct body (6-2), a flexible duct body frame (6-1), an upper connecting flange (5) and a lower connecting flange (9); the flexible duct body frame (6-1) is coated on the outer surface of the flexible duct body (6-2); the upper connecting flange (5) is fixedly connected to the outer side of the upper end of the flexible duct body (6-2); the lower connecting flange (9) is fixedly connected to the outer side of the lower end of the flexible duct body (6-2); a flange is provided between the upper connecting flange (5) and the lower connecting flange (9); A telescopic support device is provided; the lower surface of the lower connecting flange (9) is sealedly connected to the upper part of the lower wellhead (12) of the wind duct of the seismic isolation layer; the upper surface of the upper connecting flange (5) is sealedly connected to the lower part of the upper wellhead (1) of the wind duct of the seismic isolation layer; an upper supporting plate (2) is provided at the lower part of the upper wellhead (1) of the wind duct of the seismic isolation layer; the lower surface of the upper supporting plate (2) is arranged horizontally; a lower supporting plate (11) is provided at the upper part of the lower wellhead (12) of the wind duct of the seismic isolation layer; the lower supporting plate (11) adopts an angle steel structure; the lower supporting plate (11) The inner angle surface is in contact with the upper surface and side surface of the lower wellhead (12) of the seismic isolation layer air duct respectively; a positioning screw is provided on the upper part of the lower support plate (11); a through hole is provided at the lower end of the lower connecting flange (9) to cooperate with the positioning screw; the lower connecting flange (9) is fastened to the positioning screw by a nut; a sealing strip (3) is provided between the upper surface of the upper connecting flange (5) and the lower part of the upper wellhead (1) of the seismic isolation layer air duct; a plurality of tension and compression devices are evenly distributed around the outer side of the flexible air duct body (6-2); the tension and compression devices The device comprises an upper pull-press seat (13) fixed to the lower end of the upper connecting flange (5) and a lower pull-press seat (14) fixed to the upper end of the lower connecting flange (9), and pull rings are provided on the upper pull-press seat (13) and the lower pull-press seat (14), and a telescopic pull rod (15) is provided between the upper pull-press seat (13) and the lower pull-press seat (14), and the telescopic pull rod (15) comprises a pull rod with an external thread at one end and a pull rod with an internal thread at one end, and the pull rod with the external thread and the pull rod with the internal thread are threadedly connected.

2. A three-dimensional dynamic compensation air duct device according to claim 1, characterized in that: The sealing strip (3) adopts a compensating Q-shaped sealing strip.

3. A three-dimensional dynamic compensation air duct device according to claim 1, characterized in that: A sealing gasket layer (10) is provided between the lower connecting flange (9) and the upper portion of the lower wellhead (12) of the wind duct of the seismic isolation layer.

4. A three-dimensional dynamic compensation air duct device according to claim 1, characterized in that: The telescopic support device comprises an upper spring cushion seat (4) fixed to the lower end of an upper connecting flange (5) and a lower spring cushion seat (8) fixed to the upper end of a lower connecting flange (9), and a compression spring (7) is provided between the upper spring cushion seat (4) and the lower spring cushion seat (8).

5. The three-dimensional dynamic compensation air duct device according to claim 1, characterized in that: The upper connecting flange (5) and the lower connecting flange (9) are both angle steel flanges.

6. A method for installing the three-dimensional dynamic compensation air duct device according to claim 5, characterized in that: The following steps are involved: Step 1), an upper support plate is horizontally arranged at the lower end of the upper wellhead of the wind duct of the seismic isolation layer, and a lower support plate is horizontally arranged at the upper end of the lower wellhead of the wind duct of the seismic isolation layer; Step 2), compress the upper connecting flange and the lower connecting flange through the tension and compression device and place them in the air duct to be installed, and align the upper connecting flange and the lower connecting flange with the upper wellhead of the seismic isolation layer air duct and the lower wellhead of the seismic isolation layer air duct respectively; Step 3) align the lower connecting flange with the installation surface of the lower wellhead of the seismic isolation layer air duct and remove the tension and compression device. The upper connecting flange contacts the lower end of the lower wellhead of the seismic isolation layer air duct under the support of the spring of the telescopic support device to complete the installation of the three-dimensional dynamic compensation air duct device.

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