Convenient high-precision gas distribution device

Abstract

The utility model discloses a convenient high-precision gas distribution device, the main body structure of the device is composed of an operation panel (15), a fixing plate (16), support frames (17) and universal wheels (18), the four support frames (17) are connected below the operation panel (15), the fixing plate (16) is arranged among the four support frames (17), the universal wheels (18) are arranged below the support frames (17), three units are arranged on the operation panel (15), and the four units are connected with the operation panel (15). The device is small in occupied area, movable, easy to operate, capable of achieving convenient and high-precision gas distribution and capable of meeting experiment requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of mixed gas distribution, in particular to a convenient and high-precision gas distribution device. Background Art

[0002] At present, the emission standards for exhaust gas are becoming more and more stringent. The laboratory needs to configure the corresponding gas for removal research. The commercially available gases are generally pure single gases or fixed high-concentration gases, which cannot meet the experimental needs. Direct purchase of finished products is expensive, and it is easy to cause waste of gas resources when the amount is not large. Therefore, it is necessary to prepare the target gas through a mixed gas distribution device to save resources.

[0003] Traditional mixed gas distribution devices use the weighing method to achieve the preparation of target gas, that is, the production of mixed gas is carried out by calculating the mass of the gas filled. When the concentration of the target gas is very low, the mixed gas is easily affected by the internal and external environment of the gas distribution system, resulting in fluctuations in gas concentration and affecting the gas distribution accuracy. Existing high-precision gas distribution devices are complex to operate, occupy a large area, are difficult to move, and have limited application scenarios. Summary of the invention

[0004] In order to solve the deficiencies in the prior art, the utility model provides a gas configuration device which has a simple structure, is convenient to operate and can ensure high precision.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A convenient and high-precision gas distribution device is provided with an operation panel 15.

[0007] Specifically, the operation panel 15 has three units, namely an input unit, an output unit and a vacuum exhaust unit.

[0008] The input unit includes a high pressure gauge 2, a cylinder adapter 3, a stop valve 6 and a three-way valve 11.

[0009] Further, the high pressure gauge 2 is connected to the first path of the three-way valve 11, the second path of the three-way valve 11 is connected to the cylinder adapter 3, and the third path is connected to the stop valve 6;

[0010] The output unit comprises a cylinder adapter 2 4 , a cylinder adapter 3 5 , a stop valve 2 7 , a stop valve 3 8 , a three-way valve 2 12 and a three-way valve 3 13 .

[0011] Further, the first way of three-way valve 2 12 is connected to the other way of stop valve 1 6, the second way is connected to stop valve 2 7, the third way is connected to the first way of three-way valve 3 13, the other way of stop valve 27 is connected to cylinder adapter 2 4, the second way of three-way valve 3 13 is connected to stop valve 3 8, and the other way of stop valve 3 8 is connected to cylinder adapter 3 5.

[0012] The vacuum exhaust unit comprises a vacuum gauge 1, a stop valve four 9, a stop valve five 10, a three-way valve four 14 and a vent pipe 19.

[0013] Further, the vacuum gauge 1 is connected to the stop valve five 10, another way of the stop valve five 10 is connected to the first way of the three-way valve four 14, the second way of the three-way valve four 14 is connected to the three-way valve three 13, the third way is connected to the stop valve four 9, and another way of the stop valve four 9 is connected to the vent pipe 19.

[0014] A support frame 17 is installed below the operation panel 15. Further, the support frame 17 has four strips, a fixing plate 16 is installed in the middle thereof, and universal wheels 18 are installed below the support frame 17, and the universal wheels 18 have four strips.

[0015] Preferably, the vacuum gauge 1 and the high-pressure gauge 2 are both digital gauges, which can be used by installing batteries, and have a display screen that can display specific values, with a range of -0.1~60MPa;

[0016] Preferably, the cylinder adapter 1 3, the cylinder adapter 2 4 and the cylinder adapter 3 5 are provided with flow regulating valves, which can control the gas flow rate;

[0017] Preferably, the cylinder adapter 1 3 and the cylinder adapter 2 4 are positive thread ports, and the cylinder adapter 3 5 is a reverse thread port, which is used to connect flammable gas cylinders such as hydrogen and carbon monoxide;

[0018] Preferably, the vent pipe 19 is not only used to release the residual gas in the gas distribution device, but also can be used to connect a vacuum pump to evacuate the residual gas in the device and eliminate the influence of air or other gases;

[0019] Preferably, the gas pipes connected to the operation panel 15 are all stainless steel gas pipes, which are resistant to high pressure and not easily corroded.

[0020] The beneficial effects of the utility model are as follows: the device provides a mixed gas distribution device, the gas to be distributed is connected through a cylinder adapter, the flow control valve is adjusted to effectively control the gas distribution rate, the concentration of the distributed gas is controlled by a digital high-pressure meter, and a vacuum pump can be connected to eliminate the influence of residual gas to achieve high-precision gas distribution; the device occupies a small area, is movable, and is easy to operate, and can achieve convenient and fast gas distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the utility model, wherein 1 is a medium vacuum gauge, 2 is a high pressure gauge, 3 is a cylinder adapter 1, 4 is a cylinder adapter 2, 5 is a cylinder adapter 3, 6 is a stop valve 1, 7 is a stop valve 2, 8 is a stop valve 3, 9 is a stop valve 4, 10 is a stop valve 5, 11 is a three-way valve 1, 12 is a three-way valve 2, 13 is a three-way valve 3, 14 is a three-way valve 4, 15 is an operation panel, and 19 is a vent pipe.

[0022] Figure 2 It is a schematic diagram of the structure of the utility model, wherein 15 is an operation panel, 16 is a fixing plate, 17 is a support frame, and 18 is a universal wheel. DETAILED DESCRIPTION

[0023] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings and examples, but these examples do not constitute any limitation to the essence and scope of the present invention.

[0024] The following is an explanation of the implementation of the novel use method with reference to the accompanying drawings: the main structure of the device is composed of an operating panel 15, a fixed plate 16, a support frame 17, and a universal wheel 18. Four support frames 17 are connected below the operating panel 15, a fixed plate is installed in the middle of the four support frames 17, and four universal wheels 18 are installed below the four support frames 17. There are three units on the operating panel 15, namely an input unit, an output unit, and a vacuum deflation unit. The input unit has a high-pressure gauge, the high-pressure gauge 2 is connected to a three-way valve 11, the three-way valve 11 is connected to a cylinder adapter 3 on one way, and is connected to a stop valve 6 on the other way; the output unit has a three-way valve 2 12, the three-way valve 2 12 is connected to a stop valve 6 on one way, is connected to a three-way valve 3 13 on one way, is connected to a stop valve 2 7 and a cylinder adapter 2 4 on the other way, the three-way valve 3 13 is connected to a stop valve 3 8 and a cylinder adapter 3 5 on one way; the vacuum exhaust unit has a vacuum gauge 1, the vacuum gauge 1 is connected to a stop valve 5 10, the stop valve 5 10 is connected to a three-way valve 4 14, the three-way valve 4 14 is connected to a three-way valve 3 13 on one way, and is connected to a stop valve 4 9 and a vent pipe 19 on the other way. Example 1

[0025] Take the preparation of waste lubricating oil hydrogenation gas as an example, the main component is 5% hydrogen, and the rest is nitrogen. If you need to prepare 10MPa target gas, connect the target gas cylinder to the cylinder adapter 1 3, the nitrogen cylinder to the cylinder adapter 2 4, and the hydrogen cylinder to the cylinder adapter 3 5, open the stop valve 1 6, the stop valve 2 7 and the stop valve 3 8 to open the hydrogen cylinder, adjust the flow control valve, when the value displayed on the high pressure gauge 2 is 0.5MPa, close the stop valve 3 8 and the hydrogen cylinder, then open the nitrogen cylinder, adjust the flow control valve, when the high pressure gauge 2 shows a value of 10MPa, close the nitrogen cylinder and the target cylinder in turn, open the stop valve 9, release the remaining gas, and remove the target cylinder and nitrogen cylinder. Example 2

[0026] In the hydrogenation treatment of waste lubricating oil, passivation gas is also needed. The passivation gas mainly contains 5% oxygen in nitrogen. If you need to prepare 5MPa passivation gas, connect the passivation gas cylinder to the cylinder adapter 1 3, connect the oxygen to the cylinder adapter 2 4, open the stop valve 1 6 and the stop valve 2 7, open the oxygen cylinder, adjust the flow control valve, when the value displayed on the high pressure gauge 2 is 0.25MPa, close the stop valve 2 7 and the oxygen cylinder, remove the oxygen cylinder, connect the nitrogen cylinder to the cylinder adapter 2 4, open the stop valve 2 7, open the nitrogen cylinder, adjust the flow control valve, when the high pressure gauge 2 shows a value of 5MPa, close the nitrogen cylinder and the passivation gas cylinder in turn, open the stop valve 9, release the remaining gas, remove the target gas cylinder and the nitrogen cylinder, and the gas configured at this time is the passivation gas containing 5% oxygen.

Claims

1. A convenient and high-precision gas distribution device, characterized in that: The gas distribution device has an operation panel (15), and the operation panel (15) has three units, namely an input unit, an output unit and a vacuum exhaust unit; The input unit comprises a high-pressure gauge (2), a cylinder adapter (3), a stop valve (6) and a three-way valve (11); the high-pressure gauge (2) is connected to a first path of the three-way valve (11), a second path of the three-way valve (11) is connected to the cylinder adapter (3), and a third path is connected to the stop valve (6); The output unit comprises a second cylinder adapter (4), a third cylinder adapter (5), a second stop valve (7), a third stop valve (8), a second three-way valve (12) and a third three-way valve (13); a first path of the second three-way valve (12) is connected to another path of the first stop valve (6), a second path is connected to the second stop valve (7), a third path is connected to a first path of the third three-way valve (13), another path of the second stop valve (7) is connected to the second cylinder adapter (4), a second path of the third three-way valve (13) is connected to the third stop valve (8), and another path of the third stop valve (8) is connected to the third cylinder adapter (5); The vacuum exhaust unit comprises a vacuum gauge (1), a stop valve four (9), a stop valve five (10), a three-way valve four (14) and a venting pipe (19); the vacuum gauge (1) is connected to the stop valve five (10); another path of the stop valve five (10) is connected to a first path of the three-way valve four (14); the second path of the three-way valve four (14) is connected to a third path of the three-way valve three (13); the third path is connected to the stop valve four (9); another path of the stop valve four (9) is connected to the venting pipe (19); A support frame (17) is installed below the operating panel (15), and the support frames (17) are four in number, with a fixing plate (16) installed in the middle of the support frames. Universal wheels (18) are installed below the support frames (17), and the universal wheels (18) are four in number.

2. A convenient and high-precision gas distribution device according to claim 1, characterized in that: The cylinder adapter 1 (3), the cylinder adapter 2 (4) and the cylinder adapter 3 (5) are provided with flow regulating valves.

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