Automatic sampling device for analysis of metal ion impurities in corrosive gases

Abstract

The utility model discloses an automatic sampling device for analyzing metal ion impurities in corrosive gas, comprising: a gas source bottle loaded with corrosive gas, a mass flowmeter, an absorption bottle carrying absorption liquid, a sealed glove box and a plurality of pipelines; the output port of the gas source bottle is connected to the input pipe of the absorption bottle through a pipeline equipped with a plurality of control valves and a mass flowmeter, the output port of the absorption bottle is connected to the tail gas treatment device through a pipeline equipped with a plurality of control valves, and the absorption bottle is placed in the sealed glove box; the output port of the purge gas is connected to the input pipe of the absorption bottle through a pipeline equipped with a plurality of control valves; the vacuum device is connected to the input pipe of the absorption bottle through a pipeline equipped with a plurality of control valves. The utility model places the absorption bottle in a sealed glove box to avoid air pollution, adopts a control valve for automatic control, and can be directly started remotely after the flow and pressure are set to avoid human contact.

Description

Technical Field

[0001] The utility model relates to an automatic sampling device, in particular to an automatic sampling device for analyzing metal ion impurities in corrosive gas. Background Art

[0002] When corrosive gas is sampled, the metal impurity content is generally low, but particulate impurities in the air can easily contaminate the sample, and there is a possibility of inaccurate testing if it cannot be controlled.

[0003] During the sampling process, people will come into contact with it, which poses a risk of personal injury. In addition, it has high operating requirements for personnel and a high degree of operational difficulty. Utility Model Content

[0004] In order to solve the above technical problems, the utility model proposes an automatic sampling device for analyzing metal ion impurities in corrosive gas.

[0005] In order to achieve the above object, the technical solution of the utility model is as follows:

[0006] The utility model discloses an automatic sampling device for analyzing metal ion impurities in corrosive gas, comprising: a gas source bottle loaded with corrosive gas, a mass flow meter, an absorption bottle carrying absorption liquid, a sealed glove box and a plurality of pipelines;

[0007] The output port of the gas source bottle is connected to the input pipe of the absorption bottle through a pipeline equipped with several control valves and a mass flow meter, and the output port of the absorption bottle is connected to the tail gas treatment device through a pipeline equipped with several control valves, and the absorption bottle is placed in a sealed glove box;

[0008] The output port of the purge gas is connected to the input pipe of the absorption bottle through a pipeline equipped with a plurality of control valves;

[0009] The vacuum device is connected to the input pipe of the absorption bottle through a pipeline equipped with a plurality of control valves.

[0010] Based on the above technical solution, the following improvements can be made:

[0011] As a preferred solution, the output port of the gas source bottle is connected to the input pipe of the absorption bottle through, in sequence, a first pipeline equipped with a pressure regulating valve V1 and a PT pressure gauge, a second pipeline equipped with a control valve V2, and a third pipeline equipped with a mass flow meter, a control valve V3, and a ball valve V4;

[0012] The output pipe of the absorption bottle is connected to the tail gas treatment device through a fourth pipeline which is sequentially equipped with a ball valve V5 and a control valve V6;

[0013] The output port of the purge gas is connected to the input end of the second pipeline through the fifth pipeline equipped with a ball valve V7 and the sixth pipeline equipped with a control valve V8 in sequence, and the output end of the fifth pipeline is also connected to the input end of the third pipeline through the seventh pipeline equipped with a control valve V9;

[0014] The vacuum device is connected to the input end of the second pipeline through an eighth pipeline installed with a control valve V10.

[0015] As a preferred solution, the portion of the third pipeline equipped with the control valve V3 and the ball valve V4 and the portion of the fourth pipeline equipped with the ball valve V5 and the control valve V6 are placed in a sealed glove box.

[0016] As a preferred solution, a check valve V11 is also installed on the fourth pipeline, and the output pipe of the absorption bottle is connected to the tail gas treatment device through the fourth pipeline on which a ball valve V5, a control valve V6 and a check valve V11 are installed in sequence.

[0017] As a preferred solution, a check valve V12 is also installed on the fifth pipeline, and the purge gas passes through the output port through the fifth pipeline which is sequentially installed with a ball valve V7 and a check valve V12 and is connected to the input ends of the sixth pipeline and the seventh pipeline respectively.

[0018] As a preferred solution, a gas flow meter is also installed on the fifth pipeline, and the gas flow meter is installed on the pipeline between the ball valve V7 and the check valve V12.

[0019] As a preferred solution, a check valve V13 is further installed on the eighth pipeline, and the vacuum device is connected to the input end of the second pipeline through the eighth pipeline on which the check valve V13 and the control valve V10 are installed in sequence.

[0020] As a preferred solution, the control valve V2 , the control valve V3 , the control valve V6 , the control valve V8 , the control valve V9 , and the control valve V10 are pneumatic diaphragm valves.

[0021] As a preferred solution, the sealed glove box is filled with nitrogen.

[0022] The utility model discloses an automatic sampling device for analyzing metal ion impurities in corrosive gas, which has the following beneficial effects:

[0023] First, place the absorption bottle in a sealed glove box, which is a clean room with nitrogen protection to avoid air pollution.

[0024] Secondly, the utility model adopts a control valve for automatic control. After the flow rate and pressure are set, it can be directly started remotely to avoid human contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic structural diagram of an automatic sampling device provided in an embodiment of the utility model.

[0027] Among them: 1-first pipeline, 2-second pipeline, 3-third pipeline, 4-fourth pipeline, 5-fifth pipeline, 6-sixth pipeline, 7-seventh pipeline, 8-eighth pipeline, 9-gas source bottle, 10-mass flow meter, 11-absorption bottle, 12-glove box, 13-PT pressure gauge, 14-gas flow meter. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Meanwhile, expressions such as “first” and “second” are only used to distinguish multiple configurations, rather than to limit the order between configurations or other features.

[0031] In addition, the expression of “comprising” an element is an “open” expression, which simply means that a corresponding component exists, and should not be interpreted as excluding additional components.

[0032] In order to achieve the purpose of the utility model, in some embodiments of an automatic sampling device for analyzing metal ion impurities in corrosive gas, the automatic sampling device includes: a gas source bottle 9 loaded with corrosive gas, a mass flow meter 10, an absorption bottle 11 carrying an absorption liquid (such as: 0.5% HNO3 solution), a sealed glove box 12 and a plurality of pipelines.

[0033] The output port of the gas source bottle 9 is connected to the input pipe of the absorption bottle 11 through a pipeline equipped with several control valves and a mass flow meter 10. The output port of the absorption bottle 11 is connected to the exhaust gas treatment device through a pipeline equipped with several control valves. The absorption bottle 11 is placed in a sealed glove box 12, and the sealed glove box 12 is filled with nitrogen.

[0034] The output port of the purge gas (eg nitrogen) is connected to the input pipe of the absorption bottle 11 through a pipeline equipped with a plurality of control valves; the vacuum device is connected to the input pipe of the absorption bottle 11 through a pipeline equipped with a plurality of control valves.

[0035] Specifically, in some embodiments, Figure 1 As shown, the output port of the gas source bottle 9 passes through, in sequence, a first pipeline 1 equipped with a pressure regulating valve V1 and a PT pressure gauge 13, a second pipeline 2 equipped with a control valve V2, and a third pipeline 3 equipped with a mass flow meter 10, a control valve V3, and a ball valve V4, and is connected to the input pipe of the absorption bottle 11;

[0036] The output pipe of the absorption bottle 11 is connected to the tail gas treatment device through a fourth pipeline 4 which is sequentially equipped with a ball valve V5 and a control valve V6;

[0037] The output port of the purge gas is connected to the input end of the second pipeline 2 via the fifth pipeline 5 equipped with a ball valve V7 and the sixth pipeline 6 equipped with a control valve V8, and the output end of the fifth pipeline 5 is also connected to the input end of the third pipeline 3 via the seventh pipeline 7 equipped with a control valve V9;

[0038] The vacuum device is connected to the input end of the second pipeline 2 through an eighth pipeline 8 equipped with a control valve V10.

[0039] Furthermore, the portion of the third pipeline 3 on which the control valve V3 and the ball valve V4 are installed and the portion of the fourth pipeline 4 on which the ball valve V5 and the control valve V6 are installed are placed in the sealed glove box 12 .

[0040] Furthermore, a check valve V11 is installed on the fourth pipeline 4, and the output pipe of the absorption bottle 11 is connected to the tail gas treatment device through the fourth pipeline 4 which is sequentially installed with a ball valve V5, a control valve V6 and a check valve V11.

[0041] Furthermore, a check valve V12 is installed on the fifth pipeline 5, and the purge gas passes through the output port through the fifth pipeline 5 which is sequentially installed with a ball valve V7 and a check valve V12 and is connected to the input ends of the sixth pipeline 6 and the seventh pipeline 7 respectively.

[0042] Furthermore, a gas flow meter 14 is installed on the fifth pipeline 5 , and the gas flow meter 14 is installed on the pipeline between the ball valve V7 and the check valve V12 .

[0043] Furthermore, a check valve V13 is installed on the eighth pipeline 8, and the vacuum device is connected with the input end of the second pipeline 2 through the eighth pipeline 8 on which the check valve V13 and the control valve V10 are installed in sequence.

[0044] The control valves V2, V3, V6, V8, V9 and V10 are pneumatic diaphragm valves; the ball valves V4, V5 and V7 are ball valves.

[0045] It is worth noting that the pipelines involved in the present invention are all quarter-inch stainless steel pipelines and have been passivated.

[0046] The working process of the utility model is described below.

[0047] Step 1: Ball valves V4, V5 and V7 are in the normally open state, and the initial state of the other valves is in the closed state; the vacuum device is in the normally open state; the flow rate of the mass flowmeter 10 is set to facilitate the calculation of the absorption weight.

[0048] Step 2, connect the gas source bottle 9 to the first pipeline 1, ensure there is no leakage, purge with purge gas, open control valve V9, control valve V3, control valve V6 (the fifth pipeline 5, the seventh pipeline 7, the third pipeline 3, and the fourth pipeline 4 are connected), and purge the rear-end absorption device with purge gas.

[0049] Step three, vacuum replacement of purge gas, open control valve V8, until PT pressure gauge 13 shows 30psig, close control valve V8, open control valve V10, until PTT pressure gauge shows -14psig, close control valve V8, and exhaust the purge gas by vacuum.

[0050] Repeat step 3 several times (e.g. 5 times) to thoroughly purge the front-end sample pipeline.

[0051] Step 4, sample absorption, close control valve V7, open gas source bottle 9, adjust pressure regulating valve V1, when PT pressure gauge 13 is 30psig, open control valve V2 for sample absorption, calculate according to the absorption amount, and time it. After the sample is finished, close control valve V2, open control valve V9, and use purge gas to purge the absorption end.

[0052] Step 5: disassemble the sample, close the gas source bottle 9, open the control valve V10, and discharge the residual sample gas.

[0053] Step 6: Vacuum replacement with purge gas. Repeat step 3 for multiple times (e.g., 5 times). After the residual gas in the front-end sample pipeline is completely replaced, remove the gas source bottle 9.

[0054] Step seven, remove the absorption bottle 11, close the ball valve V4, ball valve V5, control valve V9, control valve V3, and control valve V6 in sequence; ensure that there is purge gas protection in the pipeline, and take out the absorption bottle 11 from the glove box 12 for testing.

[0055] The control of the control valve can be controlled by PLC, and automatic control can be set in the above program. The control method of the utility model is to control by manually starting and closing the switch. The utility model is mainly used to protect mechanical devices.

[0056] The utility model discloses an automatic sampling device for analyzing metal ion impurities in corrosive gas, which has the following beneficial effects:

[0057] First, the absorption bottle 11 is placed in a sealed glove box 12. The glove box 12 is a clean room with nitrogen protection to avoid air pollution.

[0058] Secondly, the utility model adopts a control valve for automatic control. After the flow rate and pressure are set, it can be directly started remotely to avoid human contact.

[0059] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like 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, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0060] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0061] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model.

[0062] Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are all within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic sampling device for analyzing metal ion impurities in corrosive gases, characterized in that: include: A gas source bottle loaded with corrosive gas, a mass flow meter, an absorption bottle carrying an absorption liquid, a sealed glove box, and several pipelines; The output port of the gas source bottle is connected to the input pipe of the absorption bottle through a pipeline equipped with several control valves and a mass flow meter, and the output port of the absorption bottle is connected to the tail gas treatment device through a pipeline equipped with several control valves, and the absorption bottle is placed in a sealed glove box; The output port of the purge gas is connected to the input pipe of the absorption bottle through a pipeline equipped with a plurality of control valves; The vacuum device is connected to the input pipe of the absorption bottle through a pipeline equipped with a plurality of control valves.

2. The automatic sampling device according to claim 1, characterized in that: The output port of the gas source bottle is connected to the input pipe of the absorption bottle through a first pipeline equipped with a pressure regulating valve V1 and a PT pressure gauge, a second pipeline equipped with a control valve V2, and a third pipeline equipped with a mass flow meter, a control valve V3, and a ball valve V4; The output pipe of the absorption bottle is connected to the tail gas treatment device through a fourth pipeline which is sequentially installed with a ball valve V5 and a control valve V6; The output port of the purge gas is connected to the input end of the second pipeline through the fifth pipeline equipped with a ball valve V7 and the sixth pipeline equipped with a control valve V8 in sequence, and the output end of the fifth pipeline is also connected to the input end of the third pipeline through the seventh pipeline equipped with a control valve V9; The vacuum device is connected to the input end of the second pipeline through an eighth pipeline installed with a control valve V10.

3. The automatic sampling device according to claim 2, characterized in that: The portion of the third pipeline on which the control valve V3 and the ball valve V4 are installed and the portion of the fourth pipeline on which the ball valve V5 and the control valve V6 are installed are placed in a sealed glove box.

4. The automatic sampling device according to claim 2, characterized in that: The fourth pipeline is also equipped with a check valve V11, and the output pipe of the absorption bottle is connected to the tail gas treatment device through the fourth pipeline equipped with a ball valve V5, a control valve V6 and a check valve V11 in sequence.

5. The automatic sampling device according to claim 2, characterized in that: The fifth pipeline is also equipped with a check valve V12, and the purge gas is connected to the input ends of the sixth pipeline and the seventh pipeline respectively through the output port through the fifth pipeline equipped with a ball valve V7 and a check valve V12 in sequence.

6. The automatic sampling device according to claim 5, characterized in that: A gas flow meter is also installed on the fifth pipeline, and the gas flow meter is installed on the pipeline between the ball valve V7 and the check valve V12.

7. The automatic sampling device according to claim 2, characterized in that: The eighth pipeline is also equipped with a check valve V13, and the vacuum device is connected with the input end of the second pipeline through the eighth pipeline equipped with the check valve V13 and the control valve V10 in sequence.

8. The automatic sampling device according to any one of claims 2 to 7, characterized in that: The control valve V2, control valve V3, control valve V6, control valve V8, control valve V9 and control valve V10 are pneumatic diaphragm valves.

9. The automatic sampling device according to any one of claims 1 to 7, characterized in that: The sealed glove box is filled with nitrogen.

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