Inert atmosphere protection box

Abstract

The invention provides an inert atmosphere protection box which comprises a box body which can be opened or closed. A bottom vent which penetrates through the side wall and is provided with a valve is formed in the bottom of the side wall of the box body, and a top vent which penetrates through the side wall and is provided with a valve is formed in the top of the side wall of the box body; a plurality of gas sensors are arranged at the top of the box body; and a plurality of pressure sensors are further arranged at the top of the box body. The inert atmosphere protection box is based on safety consideration. The box body is made of stainless steel, so that operators are prevented from encountering dangers from the front side when fire blast occurs in the box body. And the window is made of a transparent material and is subjected to explosion-proof treatment, so that secondary damage caused by accidents is avoided. The one-way explosion venting membrane ensures that when the pressure is abnormal, the pressure is quickly relieved through the back of the box body, and the safety of operators is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of analysis and testing, and relates to a protection box, in particular to an inert atmosphere protection box. Background Art

[0002] Some highly active materials are sensitive to air and will react with moisture, carbon dioxide or oxygen in the air, causing the material to "deteriorate". The analysis and testing of such materials needs to be carried out in a specific inert atmosphere to avoid chemical changes between the air and the sample, which will lead to low repeatability or even inaccurate analysis results.

[0003] The specific inert atmosphere is generally achieved through an inert atmosphere protection box. At present, the commercial inert atmosphere protection box is mainly a glove box. When directly using a commercially available glove box, there are the following disadvantages:

[0004] First, the glove box consists of a box body, a purification system and a transition chamber. It is more suitable for continuous operation or long-term storage in an inert atmosphere. Because it can be continuously purified according to the inert conditions inside the box, its product cost and maintenance cost are relatively high.

[0005] Second, commercially available glove boxes are only used to provide an inert atmosphere and do not provide adequate safety protection against sample explosions that may be caused by loss of atmosphere control.

[0006] Third, commercially available glove boxes use single-point monitoring for atmosphere monitoring, and do not take into account the uniformity of the gas atmosphere inside the box when performing closed and gas-free flow operations. Summary of the invention

[0007] In view of the deficiencies in the prior art, the object of the present invention is to provide an inert atmosphere protection box to solve the technical problem that the safety of the inert atmosphere protection box and the uniformity of the inert atmosphere in the prior art need to be further improved.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve the above problems:

[0009] An inert atmosphere protection box comprises a box body, and the box body can be opened or closed.

[0010] The bottom of the side wall of the box body is provided with a bottom vent which penetrates the side wall and is provided with a valve, and the top of the side wall of the box body is provided with a top vent which penetrates the side wall and is provided with a valve.

[0011] A plurality of gas sensors are arranged on the top of the box.

[0012] A plurality of pressure sensors are also arranged on the top of the box.

[0013] The present invention also has the following technical features:

[0014] Preferably, the rear wall of the box body is also provided with an explosion venting opening penetrating the rear wall, and an explosion venting membrane is provided on the explosion venting opening.

[0015] Preferably, the plurality of gas sensors are embedded and evenly distributed on a diagonal line at the top of the box.

[0016] Preferably, the plurality of pressure sensors are embedded and evenly distributed on another diagonal line at the top of the box.

[0017] Specifically, when the density of the inert gas introduced into the box is less than the density of air, the bottom vent is the air inlet and the top vent is the air outlet.

[0018] When the density of the inert gas introduced into the box is greater than the density of air, the top vent is the air inlet and the bottom vent is the air outlet.

[0019] Preferably, the front wall of the box is provided with a plurality of operation holes penetrating through the side walls, and a rubber glove is provided in each operation hole.

[0020] A transparent window is also arranged on the front wall of the box body, and the transparent window is located above the multiple operation holes.

[0021] Preferably, the bottom vent is located in the middle of the bottom of the right side wall of the box body.

[0022] The top vent is located at the middle position of the top of the right side wall of the box body.

[0023] Preferably, a door handle is also provided on the front wall of the box body, and the door handle can open or close the front wall of the box body.

[0024] Compared with the prior art, the present invention has the following technical effects:

[0025] (I) The inert atmosphere protection box in the present invention is based on safety considerations. The box body is made of stainless steel to prevent operators from being in danger from the front when an explosion occurs inside the box. The window is made of transparent material and has been explosion-proof treated to avoid secondary injuries in the event of an accident. The one-way explosion-proof membrane ensures that when the pressure is abnormal, the pressure is quickly released through the back of the box to ensure the safety of the operator.

[0026] (II) The inert atmosphere protection box of the present invention has a plurality of gas sensors and pressure sensors evenly distributed inside the box, which can monitor the inertness and uniformity of the inert atmosphere inside the box in real time.

[0027] (III) The inert atmosphere protection box in the present invention is mainly used to place small equipment that requires sample detection atmosphere during analysis and detection, to ensure the accuracy of the analysis, and to avoid the problem of inaccurate results caused by chemical reactions between active samples and air during the analysis process. It is particularly suitable for the analysis of flammable and explosive materials that require detection atmosphere. The safety design can effectively reduce the risk of harm to operators due to combustion and explosion caused by uncontrolled environment when providing an inert atmosphere for flammable and explosive materials.

[0028] (IV) The inert atmosphere protection box of the present invention has a wide range of uses. The box body is provided with a bottom vent and a top vent. The position of the air inlet and the position of the air outlet can be flexibly selected according to the relative density of the inert gas to the density of the air.

[0029] (V) The design of the inert atmosphere protection box in the present invention is based on the concept of low cost. The purpose of the box is to provide an inert atmosphere for small equipment that requires a sample detection atmosphere during analysis and detection, and the box structure is simple, without other functional redundant designs, avoiding additional costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is the front view of the inert atmosphere protection box in the present invention.

[0031] Figure 2 It is a top view of the inert atmosphere protection box in the present invention.

[0032] Figure 3 It is a rear view of the inert atmosphere protection box of the present invention.

[0033] The meanings of the numbers in the figure are: 1-box, 2-bottom vent, 3-top vent, 4-gas sensor, 5-pressure sensor, 6-explosion vent membrane, 7-operation hole, 8-rubber gloves, 9-transparent window, 10-door handle, 11-explosion vent.

[0034] The specific contents of the present invention are further described in detail below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0035] It should be noted that, unless otherwise specified, all components and materials in the present invention are components and materials known in the prior art. For example, the pressure sensor uses a known pressure sensor.

[0036] The coordinate system in the present invention is a three-dimensional rectangular coordinate system, with the X-axis pointing to the right, the Y-axis pointing to the front, and the Z-axis pointing to the top.

[0037] In accordance with the above technical scheme, specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical scheme of this application fall within the protection scope of the present invention.

[0038] Embodiment 1:

[0039] This embodiment provides an inert atmosphere protection box, such as Figure 1 As shown, the housing 1 includes a box body 1 which can be opened or closed.

[0040] like Figure 1 As shown, a bottom vent 2 penetrating the side wall and having a valve is provided at the bottom of the side wall of the box body 1, and a top vent 3 penetrating the side wall and having a valve is provided at the top of the side wall of the box body 1.

[0041] like Figure 2 As shown, a plurality of gas sensors 4 are arranged on the top of the box 1 .

[0042] like Figure 2 As shown, a plurality of pressure sensors 5 are also arranged on the top of the box body 1 .

[0043] In this embodiment, the box body 1 is made of stainless steel.

[0044] In this embodiment, the thickness of the box 1 is determined according to the material dosage and the energy size. The dynamics program ANSYS AUTODYN (nonlinear explicit finite element solution software) is used to perform numerical simulation on the response process of a box of a certain thickness under the estimated energy explosion based on the fluid-solid coupling method to determine the thickness of the box 1.

[0045] In this embodiment, the bottom vent 2 and the top vent 3 are used to replace the atmosphere in the box 1 with inert gas.

[0046] In this embodiment, the gas sensor 4 is used to monitor the real-time content of the target gas in the box 1. The type of the gas sensor 4 is selected according to the type of gas to be controlled in the box 1. If the moisture content in the box 1 needs to be controlled, a water content sensor is selected; if the oxygen content in the box 1 needs to be controlled, an oxygen sensor is selected.

[0047] In this embodiment, the pressure sensor 5 is an absolute pressure sensor, and the pressure sensor 5 is used to monitor the real-time pressure at different positions in the box body 1.

[0048] As a preferred solution of this embodiment, Figure 3 As shown, the rear wall of the box body 1 is also provided with an explosion-relief opening 11 penetrating the rear wall, and an explosion-relief membrane 6 is provided on the explosion-relief opening 11 .

[0049] In this embodiment, the explosion relief membrane 6 is used to prevent personal injury caused by excessive pressure in the box 1. When the pressure in the box 1 exceeds a certain value, the explosion is relieved through the unidirectional explosion relief membrane 6 on the rear wall of the box 1 to ensure the safety of the operator.

[0050] As a preferred solution of this embodiment, Figure 2 As shown, a plurality of gas sensors 4 are embedded and evenly distributed on a diagonal line on the top of the box body 1 .

[0051] As a preferred solution of this embodiment, Figure 2 As shown, a plurality of pressure sensors 5 are embedded and evenly distributed on another diagonal line of the top of the box body 1 .

[0052] As a preferred solution of this embodiment, when the density of the inert gas introduced into the box body 1 is less than the density of air, the bottom air vent 2 is an air inlet and the top air vent 3 is an air outlet.

[0053] When the density of the inert gas introduced into the box body 1 is greater than the density of air, the top vent 3 is an air inlet and the bottom vent 2 is an air outlet.

[0054] As a preferred solution of this embodiment, Figure 1 As shown, a plurality of operating holes 7 penetrating the side wall are arranged on the front wall of the box body 1 , and a rubber glove 8 is arranged in each operating hole 7 .

[0055] like Figure 1 As shown, a transparent window 9 is also provided on the front wall of the box body 1 , and the transparent window 9 is located above the plurality of operating holes 7 .

[0056] In this embodiment, the transparent window 9 is made of transparent material and is explosion-proof. The transparent material is convenient for observation, and the explosion-proof treatment includes one of the following methods: explosion-proof glass, organic glass with explosion-proof film, or tempered glass with explosion-proof film.

[0057] In this embodiment, the operation hole 7 is a circular hole, and a rubber glove 8 is installed in a sealed manner.

[0058] As a preferred solution of this embodiment, Figure 2 As shown, the bottom vent 2 is located at the middle position of the bottom of the right side wall of the box body 1.

[0059] like Figure 2 As shown, the top vent 3 is located in the middle of the top of the right side wall of the box body 1.

[0060] As a preferred solution of this embodiment, Figure 1 As shown, a door handle 10 is also provided on the front wall of the box body 1 , and the door handle 10 can open or close the front wall of the box body 1 .

[0061] When the inert atmosphere protection box of the present invention is used, it specifically comprises the following steps:

[0062] Step 1: open the box 1 and place the small device and active samples in the box 1.

[0063] Step 2: Connect and check whether the gas sensor 4 and the pressure sensor 5 function normally.

[0064] Step 3: Close the box 1 and open the air outlet valve.

[0065] Step 4: Connect the inert gas to the air inlet and open the air inlet valve.

[0066] Step 5: slowly inject inert gas and observe the value of the gas sensor 4. When the value reaches the requirement, close the air inlet valve and the air outlet valve in sequence.

[0067] Step six, performing analysis and testing related to small equipment in box 1.

[0068] Step 7: After the test is completed, open the box 1 and take out the small device and samples.

[0069] Embodiment 2:

[0070] This example provides the titration test process and results of a batch of high-activity aluminum. The titration test process of a batch of high-activity aluminum is carried out in the inert atmosphere protection box in Example 1.

[0071] Sample: A batch of highly reactive aluminum.

[0072] Detection principle: Use an automatic potentiometric titrator to determine the effective aluminum content in a batch of high-activity aluminum.

[0073] Operation process: Place the automatic potentiometric titrator, balance, packaged high-activity aluminum sample and reagents in the box 1. Close the box 1, open the top vent 3, and connect high-purity nitrogen as an inert gas to the bottom vent 2. Read the real-time value of the gas sensor 4 (oxygen sensor), and when the oxygen content drops below 10%, close the bottom vent 2 and the top vent 3. Weigh in the box 1 and perform automatic potentiometric titration to finally obtain the result of the effective aluminum content.

[0074] Test results: The value of the effective aluminum content in a batch of high-activity aluminum was obtained in an inert gas protection box. The measurement was repeated seven times, and the average value was 85.01%, and the repeatability RSD (relative standard deviation) of the measurement was 0.36%.

[0075] The same batch of samples were tested seven times in air atmosphere, with an average value of 80.23% and a repeatability RSD (relative standard deviation) of 0.45%.

[0076] Result analysis: When the activity of activated aluminum is high, oxygen in the air will react with the activated aluminum. Therefore, if the detection is directly carried out in the air, the effective aluminum content in the activated aluminum measured will be low. However, the detection using the atmosphere provided by the inert gas protection box can ensure the accuracy and repeatability of the detection.

Claims

1. An inert atmosphere protection box, comprising a box body (1), wherein the box body (1) can be opened or closed; characterized in that: The bottom of the side wall of the box body (1) is provided with a bottom vent (2) penetrating the side wall and having a valve, and the top of the side wall of the box body (1) is provided with a top vent (3) penetrating the side wall and having a valve; A plurality of gas sensors (4) are arranged on the top of the box (1); A plurality of pressure sensors (5) are also arranged on the top of the box body (1).

2. The inert atmosphere protection box according to claim 1, characterized in that: The rear wall of the box body (1) is also provided with an explosion relief opening (11) penetrating the rear wall, and an explosion relief membrane (6) is provided on the explosion relief opening (11).

3. The inert atmosphere protection box according to claim 1, characterized in that: The multiple gas sensors (4) are embedded and evenly distributed on a diagonal line on the top of the box (1).

4. The inert atmosphere protection box according to claim 1, characterized in that: The multiple pressure sensors (5) are embedded and evenly distributed on another diagonal line at the top of the box (1).

5. The inert atmosphere protection box according to claim 1, characterized in that: When the density of the inert gas introduced into the box (1) is less than the density of air, the bottom vent (2) is an air inlet and the top vent (3) is an air outlet; When the density of the inert gas introduced into the box (1) is greater than the density of air, the top vent (3) is an air inlet and the bottom vent (2) is an air outlet.

6. The inert atmosphere protection box according to claim 1, characterized in that: The front wall of the box body (1) is provided with a plurality of operating holes (7) penetrating the side wall, and a rubber glove (8) is arranged in each operating hole (7); A transparent window (9) is also provided on the front wall of the box body (1), and the transparent window (9) is located above the multiple operating holes (7).

7. The inert atmosphere protection box according to claim 1, characterized in that: The bottom vent (2) is located at the middle position of the bottom of the right side wall of the box body (1); The top vent (3) is located at the middle position of the top of the right side wall of the box body (1).

8. The inert atmosphere protection box according to claim 1, characterized in that: A door handle (10) is also provided on the front wall of the box body (1), and the door handle (10) can open or close the front wall of the box body (1).

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