Large negative pressure laboratory for concrete composite cavity at lower part of steel vault

Abstract

The invention belongs to the technical field of negative pressure laboratories, and particularly discloses a large-scale negative pressure laboratory for a concrete composite cavity at the lower part of a steel vault, which comprises the steel vault and the concrete composite cavity arranged below the steel vault; the steel vault is composed of a plurality of main arch ribs, a plurality of secondary beams, pressure-resistant plates and mountain wall surfaces, the plurality of main arch ribs are connected through the plurality of secondary beams, the pressure-resistant plates are arranged between the main arch ribs and the secondary beams, and the mountain wall surfaces are arranged on the main arch ribs at the two ends of the steel vault; the concrete composite cavity is composed of a compartment type concrete wall and a sealing door installed on the concrete wall, and a laboratory internal space is formed between the concrete composite cavity and the steel vault; two negative pressure single bodies are formed in the laboratory internal space and the concrete composite cavity, negative pressure effect double insurance is formed, and pressure reduction equipment and air pressure detection equipment are arranged to feed back air pressure changes in real time.

Description

Technical Field

[0001] The invention relates to the technical field of negative pressure laboratories, in particular to a large negative pressure laboratory with a concrete composite cavity under a steel arch. 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] As a necessary condition for some experiments, large negative pressure laboratories directly affect the experimental data of corresponding equipment and the effects of subsequent products, and thus affect the speed and direction of development in this field. Therefore, comprehensive laboratory design is very important in this field and has broad application prospects.

[0004] At present, in response to the actual needs of the existing situation, a large negative pressure laboratory concept with a steel structure on the upper part and a concrete mixed structure on the lower part has been proposed. 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. To improve the vacuum efficiency, the leakage must be reduced to ensure airtightness. While meeting conventional requirements and vacuum requirements, the laboratory must also improve the economy and rationality of the structure. Summary of the invention

[0005] The purpose of the present invention is to provide a large negative pressure laboratory with a concrete composite cavity under a steel arch to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a large negative pressure laboratory with a concrete composite cavity under a steel vault, comprising a steel vault and a concrete composite cavity arranged under the steel vault;

[0007] The steel arch is composed of a main arch rib, a secondary beam, a pressure-resistant plate and a gable surface. There are a plurality of main arch ribs, and the plurality of main arch ribs are connected by a plurality of secondary beams. The pressure-resistant plate is arranged between the main arch rib and the secondary beam. The gable surface is arranged on the main arch ribs at both ends of the steel arch.

[0008] The concrete composite cavity is composed of a compartment-type concrete wall and a sealed door installed on the concrete wall, and an internal laboratory space is formed between the concrete composite cavity and the steel vault.

[0009] As a preferred embodiment of the present invention, the internal space of the laboratory and the concrete composite cavity form two negative pressure units, forming a double insurance of the negative pressure effect.

[0010] As a preferred embodiment of the present invention, decompression equipment and air pressure monitoring equipment are installed in the concrete composite cavity and the internal space of the laboratory to provide real-time feedback on changes in internal air pressure.

[0011] As a preferred embodiment of the present invention, the main arch rib is a round arch, which is arranged in an arch shape to achieve that when under pressure, the force will be transmitted to the adjacent parts to resist the force emitted by the arch foot, so that greater pressure can be borne. Therefore, the arched main arch rib can withstand heavier force as a support.

[0012] As a preferred embodiment of the present invention, a plurality of the main arch ribs are arranged in a rectangular row to ensure uniform force and improve the supporting effect.

[0013] As a preferred embodiment of the present invention, the secondary beams are arranged longitudinally and evenly distributed on the main arch ribs, and multiple main arch ribs are connected to further improve the supporting effect.

[0014] As a preferred embodiment of the present invention, arc-shaped installation grooves for pressure-resistant plates are formed between the plurality of the main arch ribs and the plurality of the secondary beams, and the pressure-resistant plates are installed in the arc-shaped installation grooves to achieve uniform distribution of the pressure-resistant plates.

[0015] As a preferred embodiment of the present invention, the pressure-resistant plate is arc-shaped so as to be installed in an arc-shaped installation groove formed between the main arch rib and the secondary beam.

[0016] As a preferred embodiment of the present invention, an airtight structure is installed at the connection between the steel arch and the concrete composite cavity, thereby improving the sealing effect.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention comprises a negative pressure laboratory through a steel vault, a concrete composite cavity structure and an airtight structure. The cavity structure is formed by the structural closure of the steel vault, and the arranged concrete composite cavity is composed of a compartment-type concrete wall and a sealed door to ensure the negative pressure function. The internal space of the laboratory and the concrete composite cavity form two negative pressure monomers to form a double insurance of the negative pressure effect. In addition, a decompression device and an air pressure detection device are arranged to realize real-time feedback of air pressure changes, which can not only reduce the amount of air leakage and ensure airtightness, but also improve the economy and rationality of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the steel vault structure of the present invention.

[0021] In the figure: 1. Steel vault; 101. Main arch rib; 102. Secondary beam; 103. Pressure-resistant plate; 104. Gable surface; 2. Concrete composite cavity; 3. Airtight structure; 4. Bulkhead concrete wall; 5. Sealed door; 6. Laboratory interior space. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] 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.

[0025] See also Figure 1 As shown, the present invention provides a technical solution: a large negative pressure laboratory with a concrete composite cavity 2 under a steel vault 1, comprising a steel vault 1 and a concrete composite cavity 2 arranged under the steel vault 1.

[0026] As a further aspect of the present invention, please refer to Figure 2 As shown, the steel arch 1 is composed of a main arch rib 101, a secondary beam 102, a pressure-resistant plate 103 and a gable surface 104. A plurality of main arch ribs 101 are provided, and the plurality of main arch ribs 101 are connected by a plurality of secondary beams 102. The pressure-resistant plate 103 is provided between the main arch rib 101 and the secondary beam 102. The gable surface 104 is provided on the main arch rib 101 at both ends of the steel arch 1.

[0027] As a further aspect of the present invention, please refer to Figure 1As shown, the concrete composite cavity 2 is composed of a compartment-type concrete wall 4 and a sealed door 5 installed on the concrete wall, and a laboratory internal space 6 is formed between the concrete composite cavity 2 and the steel vault 1.

[0028] As a further feature of the present invention, the laboratory internal space 6 and the concrete composite cavity 2 form two negative pressure monomers, forming a double insurance of the negative pressure effect.

[0029] As a further feature of the present invention, decompression equipment and air pressure monitoring equipment are installed in the concrete composite cavity 2 and the internal space 6 of the laboratory to provide real-time feedback on changes in internal air pressure.

[0030] As a further feature of the present invention, the main arch rib 101 is in the shape of a round arch, and is arranged in the shape of an arch so that when under pressure, the force can be transmitted to the adjacent parts to resist the force emitted by the arch foot, so that a greater pressure can be borne. Therefore, the arched main arch rib 101 can withstand a heavier force as a support.

[0031] As a further feature of the present invention, a plurality of main arch ribs 101 are arranged in a rectangular row to ensure uniform force and improve the supporting effect.

[0032] As a further feature of the present invention, the secondary beams 102 are longitudinally arranged and evenly distributed on the main arch ribs 101, and multiple main arch ribs 101 are connected to further improve the supporting effect.

[0033] As a further feature of the present invention, arc-shaped installation grooves for the pressure-resistant plates 103 are formed between the plurality of main arch ribs 101 and the plurality of secondary beams 102 , and the pressure-resistant plates 103 are installed in the arc-shaped installation grooves to achieve uniform distribution of the pressure-resistant plates 103 .

[0034] As a further feature of the present invention, the pressure-resistant plate 103 is arc-shaped so as to be installed in an arc-shaped installation groove formed between the main arch rib 101 and the secondary beam 102 .

[0035] As a further feature of the present invention, an airtight structure 3 is installed at the connection between the steel vault 1 and the concrete composite cavity 2, which in turn improves the sealing effect.

[0036] In summary, this large negative pressure laboratory is composed of a steel vault 1, a concrete composite cavity 2 structure and an airtight structure 3. The steel vault 1 is designed to be composed of a circular arched main rib 101 and a secondary beam 102. The arc-shaped pressure-resistant plate 103 and the gable surface 104 form a closed cavity structure; the concrete composite cavity 2 is composed of a compartment-type concrete wall 4 and a sealed door 5. The laboratory internal space 6 and the concrete composite cavity 2 form two negative pressure monomers, forming a double insurance for the negative pressure effect; there are decompression equipment and air pressure monitoring equipment in the concrete composite cavity 2 and the laboratory internal space 6, which feedback the air pressure changes in real time. The steel vault 1 is connected to the concrete composite cavity 2 structure below by an airtight structure 3 to ensure the sealed negative pressure function, start the decompression equipment, and test the negative pressure effect through the air pressure monitoring equipment.

[0037] It is worth noting that the entire device is controlled by a main control button. Since the device matched with the control button is a common device and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] 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. A large negative pressure laboratory with a concrete composite cavity under a steel vault, characterized by: It comprises a steel arch (1) and a concrete composite cavity (2) arranged below the steel arch (1); The steel arch (1) is composed of a main arch rib (101), a secondary beam (102), a pressure-resistant plate (103) and a gable surface (104); a plurality of the main arch ribs (101) are provided, and the plurality of the main arch ribs (101) are connected by a plurality of the secondary beams (102); the pressure-resistant plate (103) is provided between the main arch rib (101) and the secondary beam (102); and the gable surface (104) is provided on the main arch rib (101) at both ends of the steel arch (1); The concrete composite cavity (2) is composed of a compartment-type concrete wall (4) and a sealed door (5) installed on the concrete wall, and an internal laboratory space (6) is formed between the concrete composite cavity (2) and the steel vault (1).

2. A large negative pressure laboratory with a concrete composite cavity under a steel vault according to claim 1, characterized in that: The laboratory internal space (6) and the concrete composite cavity (2) form two negative pressure units.

3. A large negative pressure laboratory with a concrete composite cavity under a steel vault according to claim 1, characterized in that: The concrete composite cavity (2) and the laboratory internal space (6) are both equipped with pressure reducing equipment and air pressure monitoring equipment.

4. A large negative pressure laboratory with a concrete composite cavity under a steel vault according to claim 1, characterized in that: The main arch rib (101) is in a circular arch shape.

5. A large negative pressure laboratory with a concrete composite cavity under a steel vault according to claim 1, characterized in that: A plurality of the main arch ribs (101) are arranged in a rectangular row.

6. A large negative pressure laboratory with a concrete composite cavity under a steel vault according to claim 1, characterized in that: The secondary beams (102) are arranged longitudinally and evenly distributed on the main arch ribs (101).

7. A large negative pressure laboratory with a concrete composite cavity under a steel vault according to claim 1, characterized in that: An arc-shaped installation groove for a pressure-resistant plate (103) is formed between the plurality of main arch ribs (101) and the plurality of secondary beams (102), and the pressure-resistant plate (103) is installed in the arc-shaped installation groove.

8. A large negative pressure laboratory with a concrete composite cavity under a steel vault according to claim 1, characterized in that: The pressure-resistant plate (103) is arc-shaped.

9. A large negative pressure laboratory with a concrete composite cavity under a steel vault according to claim 1, characterized in that: An airtight structure (3) is installed at the connection between the steel arch (1) and the concrete composite cavity (2).

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