Nitrogen protection box of precision equipment

Abstract

The nitrogen protection box of the precision equipment comprises a hollow box body (1) used for containing the precision equipment, and the front side of the box body (1) is provided with an opening and is movably connected with a box door (2); a nitrogen inlet (4) is formed in the side surface of the box body (1), and a nitrogen outlet (5) is formed in the top. According to the utility model, the problem that precise instruments for trace water and trace oxygen detection and the like are exposed in air to continuously pollute instrument sensors, pipeline systems and parts is solved, the service life of the instruments is greatly prolonged, the analysis accuracy of the instruments is greatly improved, the follow-up maintenance cost of the instruments is saved, and more accurate detection data are provided.

Description

Technical Field

[0001] This utility model relates to a nitrogen protection box, and more particularly to a nitrogen protection box for precision equipment. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] When precision instruments used for the detection of trace amounts of water and oxygen are stored, maintained, and repaired in normal ambient air, the moisture and oxygen in the air will continuously contaminate the instrument's sensors, piping system, and other components, thereby affecting the instrument's detection accuracy and service life.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] Purpose of the invention: The technical problem to be solved by this utility model is to provide a nitrogen protection box for precision equipment, which addresses the shortcomings of the existing technology.

[0006] To solve the above-mentioned technical problems, this utility model discloses a nitrogen protection box for precision equipment, comprising:

[0007] A hollow box for housing the precision equipment, the box having an opening on the front and a door movably connected thereto;

[0008] The box has a nitrogen inlet on the side and a nitrogen outlet on the top.

[0009] Furthermore, the box is equipped with partitions to isolate the precision equipment, and the partitions divide the box into several compartments for placing the precision equipment.

[0010] Furthermore, the partition plate is provided with holes for the flow of nitrogen gas.

[0011] Furthermore, the number of nitrogen inlets is the same as the number of compartments, and each compartment has one or more nitrogen inlets on the side wall of the enclosure.

[0012] Furthermore, the inner wall of the compartment is equipped with a power source, and the side of the box is equipped with a power cord inlet.

[0013] Furthermore, the nitrogen inlet is fluidly connected to the nitrogen inlet manifold, and a control valve is provided at one end of the nitrogen inlet manifold corresponding to the nitrogen inlet, while a pressure gauge and a main control valve are provided at the other end.

[0014] Furthermore, the nitrogen outlet is fluidly connected to the main exhaust pipeline, which is equipped with a Venturi valve and a check valve.

[0015] Furthermore, the cabinet door is equipped with a handle.

[0016] Furthermore, a sealing strip is provided at the point where the door and the body of the box are closed.

[0017] Furthermore, the enclosure is made of a transparent material.

[0018] Beneficial effects:

[0019] This invention solves the problem of continuous contamination of instrument sensors, pipeline systems, and components caused by exposure to air in precision instruments such as those for detecting trace amounts of water and oxygen. It significantly improves the lifespan and analytical accuracy of the instruments, saves on subsequent instrument maintenance and repair costs, and provides more accurate detection data. Attached Figure Description

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the advantages of the present invention in the above and / or other aspects will become clearer.

[0021] Figure 1 This is a front view of the present invention.

[0022] Figure 2 This is a diagram of the box door.

[0023] Figure 3 This is a side view of the present invention.

[0024] Figure 4 This is a top view of the present invention.

[0025] Figure 5 This is a schematic diagram of an embodiment with a nitrogen inlet manifold.

[0026] Figure 6 This is a schematic diagram of an embodiment with a main exhaust pipe. Detailed Implementation

[0027] This invention addresses the continuous contamination during instrument storage, maintenance, and repair by creating a positive-pressure nitrogen protection box. When the instrument is placed in this protection box, it ensures that the instrument is always in a high-purity nitrogen environment, thereby extending the instrument's service life and improving detection accuracy.

[0028] This utility model relates to a nitrogen protection box for precision equipment, such as... Figure 1 As shown, it includes a box body 1, a box door 2, a handle 3, a box body partition 7, a nitrogen pipeline inlet 4, a main exhaust port 5, a power cord inlet 9, and a power socket 6;

[0029] like Figure 5 As shown, a pressure gauge 42 and a main control valve 43 are installed on the nitrogen inlet main pipe 41, and a control valve 44 is installed on each N2 inlet branch pipe;

[0030] like Figure 6 As shown, a smart variable air volume venturi valve 52 is installed on the main exhaust pipe 51.

[0031] The positive pressure nitrogen protection chamber is made of transparent plastic, with sealing strips installed on the frame to maintain a tight seal when door 2 is closed. Figure 2 As shown, a handle 3 is installed on the door 2.

[0032] The enclosure 1 is typically made in a rectangular shape. The dimensions, number of internal layers, and number of compartments are determined based on the number and size of the instruments to be housed. Taking a three-layer, six-compartment enclosure as an example, nitrogen pipelines are connected to both sides of enclosure 1. A pressure gauge 42 and a main control valve 43 are installed on the main nitrogen inlet pipe 41. The pressure gauge reading is used to determine if the nitrogen supply is normal. Six nitrogen branch pipes branch from the main nitrogen pipe 41, entering from both sides of the enclosure. The nitrogen pipelines are connected using compression fittings. Each branch pipe corresponds to one compartment, and a control valve 44 is installed on each branch pipe. Multiple instruments can be purged simultaneously with nitrogen. Nitrogen is directly connected to the instrument's inlet for purging. Figure 4 As shown, the purging nitrogen enters the chamber 1 through the nitrogen pipeline inlet 4 and exits through the main exhaust port 5 at the top of the chamber 1, maintaining a positive pressure environment inside the chamber 1. The main exhaust port 5 at the top of the chamber 1 is connected to the exhaust pipe 51, which is equipped with an intelligent variable air volume venturi valve 52 and a one-way valve 53. By operating the venturi valve 52, the exhaust pipe is kept under negative pressure, and the one-way valve 53 prevents outside air from entering. The nitrogen discharged from the instruments inside the chamber 1 flows upward through the small air holes 8 on the partition 7, collects, and is drawn into the exhaust pipe for discharge. The partition has air holes 8, and when the cabinet door 2 is opened, the intelligent variable air volume venturi valve automatically increases the exhaust volume to ensure that a large amount of nitrogen inside the chamber does not overflow.

[0033] like Figure 3 As shown, the enclosure is powered externally, and a power socket 6 is installed on the side wall of each compartment to provide power to the instrument when needed.

[0034] This utility model provides a concept and method for a nitrogen protection chamber for precision equipment. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A nitrogen protection chamber for precision equipment, characterized in that, include: A hollow box (1) for placing the precision equipment, the box (1) has an opening on the front and is movably connected with a door (2); The box (1) has a nitrogen inlet (4) on its side and a nitrogen outlet (5) on its top; The box (1) is provided with a partition (7) for isolating the precision equipment. The partition (7) divides the box (1) into several compartments for placing the precision equipment. The partition (7) is provided with holes (8) for the flow of nitrogen gas; The number of nitrogen inlets (4) is the same as the number of compartments, and each compartment has one or more nitrogen inlets (4) on the side wall of the box (1); The inner wall of the compartment is provided with a power supply (6), and the side of the box (1) is provided with a power cord inlet (9); The nitrogen outlet (5) is fluidly connected to the main exhaust line (51), which is equipped with a venturi valve (52) and a check valve (53).

2. The nitrogen protection chamber for precision equipment according to claim 1, characterized in that, The nitrogen inlet (4) is fluidly connected to the nitrogen inlet manifold (41). The nitrogen inlet manifold (41) is equipped with a control valve (44) at one end corresponding to the nitrogen inlet (4) and a pressure gauge (42) and a main control valve (43) at the other end.

3. The nitrogen protection chamber for precision equipment according to claim 1, characterized in that, The box door (2) is equipped with a handle (3).

4. The nitrogen protection chamber for precision equipment according to claim 1, characterized in that, A sealing strip is provided at the junction of the door (2) and the body (1).

5. The nitrogen protection chamber for precision equipment according to claim 1, characterized in that, The box (1) is made of transparent material.

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