Airtight structure used at joint of steel structure dome

Abstract

The invention belongs to the technical field of airtight structures, and particularly discloses an airtight structure used at the connecting position of a steel structure dome, the airtight structure comprises a main arch and an embedded steel plate, a plurality of main arch side plates are arranged on the side face of the main arch, and a second connecting plate is fixed to the side face of each main arch side plate; a first connecting plate is fixed to the end, away from the main arch side plate, of each second connecting plate, a cambered-surface pressure-resistant plate is fixed to the end, away from the corresponding second connecting plate, of each first connecting plate, an inverted-V-shaped connecting plate is fixed to the end of each cambered-surface pressure-resistant plate, upper T-shaped steel is arranged on one side of each inverted-V-shaped connecting plate, and lower T-shaped steel is arranged on the side, away from the upper T-shaped steel, of each inverted-V-shaped connecting plate; bases are fixed to the two sides of the embedded steel plate, anchor rods are fixed to the bottoms of the bases, fixing pieces are arranged on the two sides of the embedded steel plate, the bases are matched with the anchor rods to fix the embedded steel plate to a concrete lower structure, and a first connecting plate and a second connecting plate are matched with each other to provide a deformation moving space for the cambered-surface pressure-resistant plate.

Description

Technical Field

[0001] The invention relates to the technical field of airtight structures, in particular to an airtight structure used at a connection of a steel structure dome. Background Art

[0002] With the comprehensive development of various fields in my country, my country's scientific and technological capabilities have advanced by leaps and bounds. In the process of scientific and technological development and output, it is necessary to continuously test high-precision equipment to achieve the purpose of demonstrating, correcting and improving its performance. Tests of different performance and different equipment need to be carried out in various specialized laboratories, and various specialized laboratories need to be designed and constructed accordingly according to requirements.

[0003] At present, in response to the actual needs of the existing situation, an airtight structure for the connection of the steel structure dome has been designed. Ensuring airtightness is a key issue that needs to be considered in the design of large negative pressure laboratories, involving the configuration of vacuum equipment capacity and operating cost control. In the general vacuum process, after the vacuum equipment is turned on, the vacuum degree drops quickly in the early stage; but the vacuum degree drops very slowly in the later stage. If you want to improve the vacuum efficiency, you must reduce the leakage and ensure airtightness. Summary of the invention

[0004] The object of the present invention is to provide an airtight structure used at the connection of a steel structure dome to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an airtight structure used at the connection of a steel structure dome, comprising a main arch and an embedded steel plate, wherein a plurality of main arch side plates are provided on the side of the main arch, a second connecting plate is fixed to the side of each main arch side plate, a first connecting plate is fixed to the end of each second connecting plate away from the main arch side plate, a curved pressure-resistant plate is fixed to the end of the first connecting plate away from the second connecting plate, an inverted V-shaped connecting plate is fixed to the end of the curved pressure-resistant plate, an upper T-steel is provided on one side of the inverted V-shaped connecting plate, a lower T-steel is provided on the side of the inverted V-shaped connecting plate away from the upper T-steel, a base is fixed on both sides of the embedded steel plate, an anchor rod is fixed on the bottom of the base, fixing parts are provided on both sides of the embedded steel plate, the base cooperates with the anchor rod to fix the embedded steel plate to the concrete lower structure, and the first connecting plate and the second connecting plate cooperate with each other to provide deformation and movement space for the curved pressure-resistant plate.

[0006] Preferably, reinforcing plates are fixed between the main arch side plate 13 and the second connecting plate, between the second connecting plate and the first connecting plate, and between the first connecting plate and the curved pressure-resistant plate to increase the bending strength of the connection.

[0007] Preferably, the inverted V-shaped connecting plate and the upper T-steel and the lower T-steel are welded to form an H-shaped secondary beam, and the curved pressure-resistant plate is connected to the neutral axis position of the H-shaped secondary beam to reduce the stress complexity of the connecting weld between the H-shaped secondary beam and the curved pressure-resistant plate.

[0008] Preferably, the embedded steel plate is arranged at the junction of the concrete lower structure and the steel arch, and is used to connect the curved pressure-resistant plate and the concrete lower structure.

[0009] Preferably, the first connecting plate, the second connecting plate and the arc-shaped pressure-resistant plate form a Z-shaped transition structure to avoid a rigid connection between the arc-shaped pressure-resistant plate and the main arch.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The present invention achieves the purpose of reducing air leakage through the curved pressure-resistant plate, the embedded steel plate, the first connecting plate and the second connecting plate. The curved pressure-resistant plate and the embedded steel plate, the first connecting plate and the second connecting plate, and the first connecting plate and the curved pressure-resistant plate are all connected by welding, which not only has a firm connection, but also effectively reduces the gap for air leakage. The Z-shaped structural transition formed between the first connecting plate and the second connecting plate and the curved pressure-resistant plate effectively offsets the deformation displacement of the curved pressure-resistant plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the connection structure between the surface pressure-resistant plate and the steel secondary beam of the present invention;

[0013] Figure 2 This is a schematic diagram of the connection structure of the curved pressure-resistant plate and the embedded parts of the present invention;

[0014] Figure 3 It is a schematic diagram of the "Z"-shaped transition structure between the curved pressure-resistant plate and the main arch rib of the present invention.

[0015] In the figure: 1. curved pressure-resistant plate; 2. upper T-shaped steel; 3. lower T-shaped steel; 4. inverted V-shaped connecting plate; 5. embedded steel plate; 6. base; 7. anchor rod; 8. fixing piece; 9. first connecting plate; 10. second connecting plate; 11. reinforcing plate; 12. main arch; 13. main arch side plate. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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.

[0018] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] See also Figure 1-3 The present invention provides a technical solution: an airtight structure used at the connection of a steel structure dome, comprising a main arch 12 and an embedded steel plate 5, wherein a plurality of main arch side plates 13 are arranged on the side of the main arch 12, a second connecting plate 10 is fixed to the side of each main arch side plate 13, a first connecting plate 9 is fixed to the end of each second connecting plate 10 away from the main arch side plate 13, a curved pressure-resistant plate 1 is fixed to the end of the first connecting plate 9 away from the second connecting plate 10, an inverted V-shaped connecting plate 4 is fixed to the end of the curved pressure-resistant plate 1, an upper T-shaped steel 2 is arranged on one side of the inverted V-shaped connecting plate 4, a lower T-shaped steel 3 is arranged on the side of the inverted V-shaped connecting plate 4 away from the upper T-shaped steel 2, a base 6 is fixed to the two sides of the embedded steel plate 5, an anchor rod 7 is fixed to the bottom of the base 6, fixing parts 8 are arranged on both sides of the embedded steel plate 5, the base 6 cooperates with the anchor rod 7 to fix the embedded steel plate 5 on the concrete lower structure, and the first connecting plate 9 and the second connecting plate 10 cooperate with each other to provide deformation and movement space for the curved pressure-resistant plate 1.

[0020] Furthermore, reinforcing plates 11 are fixed between the main arch side plate 13 and the second connecting plate 10, between the second connecting plate 10 and the first connecting plate 9, and between the first connecting plate 9 and the curved pressure-resistant plate 1 to increase the bending strength of the connection.

[0021] Furthermore, the inverted V-shaped connecting plate 4 and the upper T-steel 2 and the lower T-steel 3 are welded to form an H-shaped secondary beam, and the curved pressure-resistant plate 1 is connected to the neutral axis position of the H-shaped secondary beam, in order to reduce the stress complexity of the connecting weld between the H-shaped secondary beam and the curved pressure-resistant plate 1.

[0022] Furthermore, the embedded steel plate 5 is arranged at the junction of the concrete lower structure and the steel arch, and is used to connect the curved pressure-resistant plate 1 and the concrete lower structure.

[0023] Furthermore, the first connecting plate 9 , the second connecting plate 10 and the arc-shaped pressure-resistant plate 1 form a Z-shaped transition structure to avoid a rigid connection between the arc-shaped pressure-resistant plate and the main arch 12 .

[0024] To sum up, when in use, the device includes a curved pressure-resistant plate 1, an embedded steel plate 5, a first connecting plate 9, a second connecting plate 10, an upper T-steel 2, a lower T-steel 3 and an inverted V-shaped connecting plate 4. The upper T-steel 2 and the lower T-steel 3 are connected to both sides of the inverted V-shaped connecting plate 4 by welding to form an H-shaped secondary beam. The H-shaped secondary beam formed by the upper T-steel 2, the lower T-steel 3 and the inverted V-shaped connecting plate 4 is installed between the main arches 12 of the dome.

[0025] The provided anchor rod 7 is used to be embedded in the concrete lower structure, and then the base 6 is connected to the anchor rod 7, and then the partial structure of the embedded steel plate 5 passes through the base 6 and extends deep into the concrete lower structure, and the embedded steel plate 5 and the base 6 are connected by welding. After the fixing is completed, the end of the curved pressure-resistant plate 1 is welded to the embedded steel plate 5 and the inverted V-shaped connecting plate 4 respectively, and a fixing part 8 is added at the connection between the curved pressure-resistant plate 1 and the embedded steel plate 5 to strengthen the connection strength between the curved pressure-resistant plate 1 and the embedded steel plate 5.

[0026] The curved pressure-resistant plate 1 is connected by the first connecting plate 9, the second connecting plate 10 and the main arch side plate 13. The Z-shaped structural transition structure formed by the first connecting plate 9, the second connecting plate 10 and the curved pressure-resistant plate 1 is not only used to connect the curved pressure-resistant plate 1 and the main arch side plate 13, but also used to offset the deformation of the curved pressure-resistant plate 1.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An airtight structure used at the connection of a steel structure dome, characterized in that: The invention comprises a main arch (12) and an embedded steel plate (5), wherein a plurality of main arch side plates (13) are arranged on the side of the main arch (12), a second connecting plate (10) is fixed on the side of each main arch side plate (13), a first connecting plate (9) is fixed on the end of each second connecting plate (10) away from the main arch side plate (13), a curved pressure-resistant plate (1) is fixed on the end of the first connecting plate (9) away from the second connecting plate (10), an inverted V-shaped connecting plate (4) is fixed on the end of the curved pressure-resistant plate (1), an upper T-shaped steel (2) is arranged on one side of the inverted V-shaped connecting plate (4), a lower T-shaped steel (3) is arranged on the side of the inverted V-shaped connecting plate (4) away from the upper T-shaped steel (2), a base (6) is fixed on both sides of the embedded steel plate (5), an anchor rod (7) is fixed on the bottom of the base (6), and fixing parts (8) are arranged on both sides of the embedded steel plate (5).

2. The airtight structure used at the connection of a steel structure dome according to claim 1, characterized in that: A reinforcing plate (11) is fixed between the main arch side plate (13) and the second connecting plate (10), between the second connecting plate (10) and the first connecting plate (9), and between the first connecting plate (9) and the curved surface pressure-resistant plate (1).

3. The airtight structure used at the connection of a steel structure dome according to claim 1, characterized in that: The inverted V-shaped connecting plate (4) and the upper T-shaped steel (2) and the lower T-shaped steel (3) are welded to form an H-shaped secondary beam, and the curved pressure-resistant plate (1) is connected to the neutral axis position of the H-shaped secondary beam.

4. The airtight structure used at the connection of a steel structure dome according to claim 1, characterized in that: The embedded steel plate (5) is arranged at the junction of the concrete lower structure and the steel arch.

5. The airtight structure used in the connection of a steel structure dome according to claim 1, characterized in that: The first connecting plate (9), the second connecting plate (10) and the curved pressure-resistant plate (1) form a Z-shaped transition structure.

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