Gas purity detection device and chlorine purity detection system

Abstract

The application belongs to the technical field of gas detection, and particularly relates to a gas purity detection device and a chlorine gas purity detection system. The gas purity detection device comprises a detection gas cylinder, a detection liquid cylinder, an exhaust pipeline and a liquid suction pipeline. The detection gas cylinder is used for containing a gas to be detected; the detection liquid cylinder is used for containing a detection liquid and can be connected with an external atmosphere, and the detection liquid can chemically react with the gas to be detected; the exhaust pipeline is provided with a second switch valve and extends outward from the detection gas cylinder; the liquid suction pipeline is connected between the detection gas cylinder and the detection liquid cylinder and is provided with a first switch valve, and one end of the liquid suction pipeline close to the bottom of the detection liquid cylinder, so that the detection liquid can enter the detection gas cylinder through the liquid suction pipeline under the action of siphon effect. The detection device provided by the application can evaluate the purity of the target gas by observing the liquid level in the detection gas cylinder, and can be applied in a chlorine gas pipeline to detect the purity of chlorine gas, which is convenient, fast and low in cost.

Description

Technical Field

[0001] This application belongs to the field of gas detection technology, and in particular relates to a gas purity detection device and a chlorine purity detection system. Background Technology

[0002] The chemical industry requires the use of reaction gases, such as chlorine in the preparation of chloride salts, bleaching agents, and the production of metallic titanium and magnesium. To ensure the reaction effect, it is necessary to roughly test the purity of the reaction gases.

[0003] However, current detection technologies have a series of problems in their implementation, such as overly complex detection equipment, high detection costs, and the inability to achieve real-time on-site monitoring. Utility Model Content

[0004] This application provides a gas purity detection device and a chlorine purity detection system to solve the technical problems of complex detection equipment, high detection cost, and difficulty in implementation of monitoring in the prior art.

[0005] The first aspect of this application provides a gas purity detection device, including a detection gas cylinder, a detection liquid cylinder, an exhaust pipe, and a liquid suction pipe. The detection gas cylinder is used to contain the gas to be detected; the detection liquid cylinder is used to contain the detection liquid and is connected to the external atmospheric environment, and the detection liquid is capable of chemically reacting with the gas to be detected; the exhaust pipe is provided with a second switching valve and extends outward from the detection gas cylinder; the liquid suction pipe is connected between the detection gas cylinder and the detection liquid cylinder and is provided with a first switching valve, and the liquid suction pipe is located at one end of the detection liquid cylinder near the bottom of the detection liquid cylinder, so that the detection liquid can enter the detection gas cylinder through the liquid suction pipe under the action of siphon effect.

[0006] In an optional embodiment of this application, at least a portion of the test liquid bottle is higher than the test gas bottle, and the highest point of the aspiration tube is lower than the top wall of the test liquid bottle.

[0007] In an optional embodiment of this application, the aspiration tube extends into one end of the test liquid bottle and is spaced apart from the bottom wall of the test liquid bottle.

[0008] In an optional embodiment of this application, the suction line is located on the top wall of the test gas cylinder at its connection point. The exhaust line is also located on the top wall of the test gas cylinder at its connection point.

[0009] In an optional embodiment of this application, the end of the exhaust pipe furthest from the test gas cylinder extends into the test liquid bottle and is submerged in the test liquid.

[0010] In one of the optional solutions of this application, the bottom wall of the test gas cylinder is connected to the main gas cylinder line, and the main gas cylinder line is equipped with a third switch valve.

[0011] In the optional scheme of this application, an air inlet pipe and a gas cylinder drain pipe are also included. The air inlet pipe is connected to the main gas cylinder line and is equipped with a fourth switch valve, and the gas cylinder drain pipe is connected to the main gas cylinder line and is equipped with a fifth switch valve.

[0012] In an optional embodiment of this application, the top wall of the test liquid bottle is connected to an injection pipe, and the bottom wall of the test liquid bottle is connected to a liquid bottle drain pipe.

[0013] The liquid injection line is equipped with a sixth switch valve, and the liquid bottle drain line is equipped with a seventh switch valve.

[0014] In an optional embodiment of this application, the outer peripheral wall of the gas cylinder is provided with a window for observing the liquid level and a scale line is provided in the height direction.

[0015] The second aspect of this application provides a chlorine purity detection system, which further includes a chlorine supply pipeline and the aforementioned gas purity detection device, wherein the chlorine supply pipeline is connected to a detection gas cylinder in the gas purity detection device.

[0016] Compared with the technology applied for, this application has the following beneficial effects:

[0017] The gas purity detection device provided in this application includes at least a detection gas cylinder and a detection liquid cylinder, which are connected to each other via a suction pipe. In use, the detection liquid cylinder is filled with the detection liquid, i.e., the detection liquid cylinder is completely filled. With the second switch valve on the exhaust pipe open and the first switch valve on the suction pipe closed, the gas to be detected is introduced into the detection gas cylinder to expel the existing gas in the cylinder until the detection gas cylinder is full of the gas to be detected, and then the second switch valve is closed.

[0018] Next, the first switch valve is opened. Due to the connection of the detection liquid bottle to the atmospheric environment and the hydraulic action of the detection liquid, the detection liquid enters the detection gas bottle. The detection liquid reacts with the gas to be detected, and the internal pressure of the detection gas bottle decreases, forming a negative pressure to draw the detection liquid into the detection gas bottle. This continues until the target gas in the gas to be detected that can be absorbed by the detection liquid in the detection liquid bottle has completely reacted. The pressure in the detection gas bottle and the pressure in the detection liquid bottle remain stable, and the liquid level in the detection gas bottle no longer changes. The volume of the absorbed target gas can then be confirmed. Based on the ratio of the target gas volume to the volume of the detection gas bottle, the purity of the target gas can be evaluated.

[0019] In practical applications, this gas purity detection device can be directly installed on chlorine pipelines. The detection liquid is liquid alkali, allowing for on-site chlorine purity testing. This avoids the cumbersome process of taking samples for testing each time. The cost per test is the amount of liquid alkali in the testing bottle, significantly reducing testing costs. As can be seen, this gas purity detection device has a simple structure and can detect different gases by selecting the appropriate detection liquid, demonstrating good applicability and not being limited to chlorine purity testing. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a gas purity detection device according to one embodiment of this application.

[0022] Figure Labels

[0023] 100. Gas purity detection device;

[0024] 10. Inspect the gas cylinder; 11. Gas cylinder main line; 111. Third switch valve;

[0025] 20. Test liquid bottle; 21. Liquid filling line; 211. Sixth switch valve; 22. Liquid bottle drain line; 221. Seventh switch valve;

[0026] 30. Suction tubing; 31. First switching valve;

[0027] 40. Exhaust pipe; 41. Second switching valve; 42. Pressure gauge;

[0028] 50. Intake pipe; 51. Fourth switch valve;

[0029] 60. Gas cylinder drain line; 61. Fifth switch valve. Detailed Implementation

[0030] To make the above and other features and advantages of the present invention clearer, the invention will be further described below with reference to the accompanying drawings. It should be understood that the specific embodiments given herein are for the purpose of explanation to those skilled in the art and are exemplary only, not restrictive.

[0031] Furthermore, features specified with "first" or "second" for descriptive purposes only should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Features specified with "first" or "second" may explicitly or implicitly include at least one of the specified features. The description of "multiple" generally means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] Figure 1 This is a schematic diagram of a gas purity detection device 100 according to one embodiment of this application. Please refer to... Figure 1 The gas purity detection device 100 includes a detection gas cylinder 10, a detection liquid bottle 20, a liquid suction line 30, and an exhaust line 40.

[0033] The detection gas cylinder 10 is used to contain the gas to be tested. The detection liquid cylinder 20 is used to contain the detection liquid and is connected to the external atmosphere; the detection liquid can chemically react with the gas to be tested. The exhaust pipe 40 is equipped with a second switching valve 41 and extends outward from the detection gas cylinder 10.

[0034] The suction line 30 is connected between the detection gas cylinder 10 and the detection liquid bottle 20 and is equipped with a first switch valve 31. The suction line 30 is located at one end of the detection liquid bottle 20 near the bottom of the bottle, so that the detection liquid can enter the detection gas cylinder 10 through the suction line 30 under the action of siphon effect.

[0035] In this embodiment, the gas purity detection device 100 includes at least a detection gas cylinder 10 and a detection liquid cylinder 20. Both the detection gas cylinder 10 and the detection liquid cylinder 20 are containers, i.e., they have internal cavities to respectively contain the gas to be detected and the detection liquid. The detection gas cylinder 10 and the detection liquid cylinder 20 are connected by a suction pipe 30, and the internal fluids are exchanged through the suction pipe 30. Here, the fluid can refer to the gas to be detected or the detection liquid. The gas to be detected contained in the detection gas cylinder 10 is a mixed gas. The ability of the gas to be detected to chemically react with the detection liquid means that the target gas whose purity needs to be tested in the detection gas can react with the detection liquid.

[0036] In use, inject the detection liquid into the detection liquid bottle 20, ensuring that the liquid level is higher than the end of the suction line 30 located in the detection liquid bottle 20, so that the detection liquid in the detection liquid bottle 20 can enter the detection gas cylinder 10 through the suction line 30. With the second switch valve 41 on the exhaust line 40 open and the first switch valve 31 on the suction line 30 closed, fill the detection gas cylinder 10 with the gas to be detected to expel the original gas in the detection gas cylinder 10 until the detection gas cylinder 10 is full of the gas to be detected, and then close the second switch valve 41.

[0037] Next, the first switch valve 31 is opened. Since the detection liquid bottle 20 is connected to the atmospheric environment, the detection liquid enters the detection gas bottle 10 under atmospheric pressure and the hydraulic pressure of the detection liquid. The detection liquid reacts with the target gas in the gas to be tested, and the internal pressure of the detection gas bottle 10 decreases, forming a negative pressure to siphon the detection liquid into the detection gas bottle 10. This continues until the target gas in the gas to be tested that can be absorbed by the detection liquid in the detection liquid bottle 20 has finished reacting. The pressure of the detection gas bottle 10 and the pressure of the detection liquid bottle 20 remain stable, and the liquid level in the detection gas bottle 10 no longer changes. The volume of the absorbed target gas can then be confirmed. The purity of the target gas can be evaluated based on the ratio of the target gas volume to the volume of the detection gas bottle 10.

[0038] As can be seen, the gas purity detection device 100 has a simple structure, low cost, and can achieve different gas purity detection by selecting different detection liquids according to the gas to be detected, thus having good versatility.

[0039] In a further optional embodiment, at least a portion of the detection liquid bottle 20 is higher than the detection gas cylinder 10, and the highest point of the suction line 30 is lower than the top wall of the detection liquid bottle 20. In specific applications, the detection liquid bottle 20 is filled with detection liquid, meaning the liquid level in the detection liquid bottle 20 is at the top wall position, i.e., reaching the bottle opening. The fact that the bottle opening of the detection liquid bottle 20 is higher than the detection gas cylinder 10 and the highest point of the suction line 30 indicates that the liquid level in the detection liquid bottle 20 is higher than that in the detection gas cylinder 10 and the suction line 30. This facilitates the formation of hydraulic pressure, which, in conjunction with atmospheric pressure, pumps the detection liquid into the detection gas cylinder 10, thereby creating an initial siphon negative pressure.

[0040] In this embodiment, the initial driving force is generated by hydraulic pressure formed by liquid level difference combined with atmospheric pressure. Of course, it is not limited to this. For example, the initial driving force can also be provided by external pressure.

[0041] In some alternative embodiments, the outer peripheral wall of the detection cylinder 10 is formed with a window for observing the liquid level and is provided with scale lines in the height direction.

[0042] In this embodiment, the scale line can be used to represent volume. The volume of liquid entering the test gas cylinder 10 can be read based on the liquid level in the test gas cylinder 10 and the scale line. It should be understood that the liquid volume in the test gas cylinder 10 is the volume of the target gas in the gas to be tested. Without any test liquid being drawn in, the test gas cylinder 10 is filled with the gas to be tested; therefore, the volume of the gas to be tested is the volume of the test gas cylinder 10. The volume of the test gas cylinder 10 can be obtained, and the liquid volume in the test gas cylinder 10 can be read based on the liquid level after the reaction is complete. Thus, the purity of the target gas in the gas to be tested is the ratio of the liquid volume in the test gas cylinder 10 to the volume of the test gas cylinder 10.

[0043] In some alternative embodiments, the detection cylinder 10 has the same cross-sectional shape in any direction perpendicular to its height. It should be understood that the volume of the detection cylinder 10 is the product of its cross-sectional area and the height of its internal space, and correspondingly, the liquid volume in the detection cylinder 10 is the product of its cross-sectional area and the liquid level height. Therefore, the purity of the target gas in the gas to be detected is the ratio of the liquid level height to the height of the internal space of the detection cylinder 10.

[0044] Since the internal height of the detection cylinder 10 is known, the purity of the target gas in the gas to be detected can be obtained simply by measuring the liquid level using a tool (e.g., a ruler). In one embodiment, the cross-sectional shape of the detection cylinder 10 in the height direction can be rectangular or circular, that is, the detection cylinder 10 is rectangular, cylindrical, etc. In this case, the scale lines on the detection cylinder 10 can indicate the height.

[0045] In some alternative embodiments, the aspiration line 30 extends into one end of the test liquid bottle 20 and is spaced apart from the bottom wall of the test liquid bottle 20.

[0046] In this embodiment, the suction line 30 is at a certain distance from the bottom wall of the test liquid bottle 20 to avoid the bottom of the test liquid bottle 20 affecting the liquid entering the suction line 30. At the same time, the insertion depth of the suction line 30 into the test liquid bottle 20 determines the maximum volume of liquid that can be sucked in. To ensure a sufficient reaction, the insertion depth of the suction line 30 should be ensured to be sufficient.

[0047] In one optional embodiment, the distance between the end of the aspiration tube 30 extending into the test liquid bottle 20 and the bottom wall of the test liquid bottle 20 is h, where 0.5cm ≤ h ≤ 2cm. Preferably, h = 1cm.

[0048] In some optional embodiments, the suction line 30 is located on the top wall of the detection gas cylinder 10 at its connection point. The exhaust line 40 is also located on the top wall of the detection gas cylinder 10 at its connection point. It should be noted that the top wall of the detection gas cylinder 10 corresponds to the bottle opening, and the connection point of the suction line 30 to the detection gas cylinder 10 is located at the bottle opening. This allows for a larger drip path of the detection liquid within the detection gas cylinder 10, which is more conducive to the reaction between the detection liquid and the target gas in the gas to be detected, until the target gas is completely absorbed.

[0049] Furthermore, the connection between the exhaust pipe 40 and the test gas cylinder 10 is located at the mouth of the test gas cylinder 10. In this way, during the process of filling the test gas cylinder 10 with the gas to be tested, the non-test gas in the test gas cylinder 10 can be completely discharged.

[0050] In some alternative embodiments, the exhaust line 40 is provided with a pressure gauge 42, which is located between the detection gas cylinder 10 and the second switching valve 41.

[0051] In this embodiment, the pressure inside the gas cylinder 10 can be detected by the pressure gauge 42. The pressure gauge 42 serves as a protective device to assess whether the pressure inside the gas cylinder 10 is abnormal and can detect abnormal situations in a timely manner, such as excessive pressure inside the gas cylinder 10 due to pipeline blockage.

[0052] In one alternative embodiment, the end of the exhaust pipe 40 away from the gas cylinder 10 extends into the test liquid bottle 20 and is submerged in the test liquid.

[0053] In this embodiment, the exhaust pipe 40 extends from the detection gas cylinder 10 and into the detection liquid bottle 20, with one end of the pipe submerged in the detection liquid bottle 20. This design is suitable for situations where the gas to be tested contains toxic gas components. Understandably, during the process of replacing the non-detectable gas (the original gas in the detection gas cylinder 10) with the gas to be tested, the gas to be tested will inevitably flow out through the exhaust pipe 40 and into the detection liquid in the detection liquid bottle 20, where the detection liquid absorbs the toxic gas portion, thereby preventing environmental pollution.

[0054] In another optional embodiment, the end of the exhaust pipe 40 furthest from the gas cylinder 10 to be tested is located in the atmospheric environment. In this embodiment, during the process of replacing the original gas in the gas cylinder 10 with the gas to be tested, the gas discharged from the exhaust pipe 40 directly enters the atmosphere. In this case, it is suitable for situations where the gas to be tested does not contain toxic gases.

[0055] In some optional embodiments, the bottom wall of the detection gas cylinder 10 is connected to the gas cylinder main line 11, and the gas cylinder main line 11 is provided with a third switch valve 111.

[0056] In this embodiment, during the process of replacing the gas in the test gas cylinder 10, the gas to be tested needs to enter the test gas cylinder 10 through the main gas cylinder inlet 11 at the bottom of the cylinder. In an optional embodiment, the exhaust pipe 40 is connected to the top wall of the test gas cylinder 10, i.e., the cylinder opening. In this way, the gas to be tested can flow from the bottom of the cylinder towards the exhaust pipe 40 at the cylinder opening, replacing the original gas in the test gas cylinder 10.

[0057] Of course, after the gas purity test is completed, the liquid in the test cylinder 10 is located at the bottom of the cylinder and can be discharged through the main gas cylinder line 11.

[0058] It should be understood that the third switch valve 111 on the main gas cylinder line 11 can switch the main gas cylinder line 11 to be connected or disconnected. When the main gas cylinder line 11 is connected, it connects the internal space of the detection gas cylinder 10, and when the main gas cylinder line 11 is disconnected, it isolates the internal space of the detection gas cylinder 10.

[0059] In a further optional embodiment, the gas purity detection device 100 further includes an inlet pipe 50 and a gas cylinder drain pipe 60. The inlet pipe 50 is connected to the main gas cylinder line 11 and is provided with a fourth switch valve 51. The gas cylinder drain pipe 60 is connected to the main gas cylinder line 11 and is provided with a fifth switch valve 61.

[0060] In this embodiment, two branches branch from the main gas cylinder line 11, which correspond to the air inlet line 50 and the gas cylinder drain line 60, respectively. The air inlet line 50 and the gas cylinder drain line 60 are respectively equipped with a fourth switch valve 51 and a fifth switch valve 61. The fourth switch valve 51 is used to switch the on / off state of the air inlet line 50, and the fifth switch valve 61 is used to switch the on / off state of the gas cylinder drain line 60.

[0061] In practical applications, when the fourth switch valve 51 and the third switch valve 111 are both in the connected state and the fifth switch valve 61 is in the open state, a gas replacement operation can be performed on the detection gas cylinder 10. When the fifth switch valve 61 and the third switch valve 111 are both in the connected state and the fourth switch valve 51 is in the open state, a liquid draining operation can be performed on the detection gas cylinder 10.

[0062] In some optional embodiments, the top wall of the detection liquid bottle 20 is connected to an injection line 21, and the bottom wall of the detection liquid bottle 20 is connected to a liquid bottle drain line 22. The injection line 21 is provided with a sixth switching valve 211, and the liquid bottle drain line 22 is provided with a seventh switching valve 221.

[0063] In this embodiment, the test liquid can enter the test liquid bottle 20 through the injection line 21, and after the test is completed, the remaining liquid in the test liquid bottle 20 can be discharged through the liquid bottle drain line 22.

[0064] Of course, the liquid injection line 21 is switched on and off by the sixth switch valve 211, and the liquid bottle drain line 22 is switched on and off by the seventh switch valve 221.

[0065] It should be understood that when the sixth switch valve 211 is in the connected state, liquid injection can be performed, and it also ensures that the test liquid bottle 20 is connected to the atmospheric environment. Therefore, in practical applications, the sixth switch valve 211 is generally normally open. After the test is completed, the seventh switch valve 221 can be switched from the disconnected state to the connected state to drain the liquid. After draining, the seventh switch valve 221 can be switched back to the disconnected state to inject the test liquid and complete the replacement of the test liquid.

[0066] In specific applications, the first switching valve 31, the second switching valve 41, the third switching valve 111, the fourth switching valve 51, the fifth switching valve 61, the sixth switching valve 211, and the seventh switching valve 221 are all electromagnetic control valves.

[0067] To better understand this solution, the operation process of using the gas purity detection device 100 is described in detail below.

[0068] First, the sixth switch valve 211 is placed in the connected state and the seventh switch valve 221 is placed in the disconnected state, so as to add test liquid to the test liquid bottle 20 through the liquid injection line 21 until the test liquid bottle 20 is full of test liquid.

[0069] The fourth switch valve 51, the third switch valve 111, and the second switch valve 41 are connected to allow the gas to be tested to be filled into the test gas cylinder 10 via the air inlet pipe 50 and the main gas cylinder line 11. The original gas in the test gas cylinder 10 is discharged through the exhaust pipe 40 to replace the original gas in the test gas cylinder 10.

[0070] It should be noted that the complete replacement of gas in the test cylinder 10 can be determined based on the volume of the test cylinder 10 and the injection rate of the gas to be tested. If the gas is completely replaced, the fourth switch valve 51, the third switch valve 111, and the second switch valve 41 are placed in the open state.

[0071] When the first switch valve 31 is opened, due to the liquid level difference, the combined action of atmospheric pressure and hydraulic pressure provides the initial power for the detection liquid to enter the detection gas cylinder 10. As the target gas component in the gas to be tested in the detection gas cylinder 10 is absorbed by the detection liquid, a negative pressure is formed inside the detection gas cylinder 10, which siphons the detection liquid in the detection liquid bottle 20 into the detection gas cylinder 10 through the suction pipe 30 until all the absorbable target gas components in the gas to be tested in the detection gas cylinder 10 are absorbed. The pressures of the detection gas cylinder 10, the detection liquid bottle 20, and the suction pipe 30 are balanced. By obtaining the liquid volume inside the detection gas cylinder 10, the purity of the target gas in the gas to be tested can be calculated.

[0072] It should be understood that some liquid will remain in the aspiration line 30. The volume of the residual liquid in this part of the line will affect the calculation data. Therefore, the volume of the aspiration line 30 should be as small as possible without affecting the detection.

[0073] In one optional embodiment, the target gas in the gas to be detected is a toxic gas. Therefore, the exhaust pipe 40 extends into the detection liquid bottle 20 and is submerged in the detection liquid to prevent the gas discharged from the detection gas bottle 10 from polluting the environment.

[0074] In one optional embodiment, the installation height of the detection liquid bottle 20 is higher than that of the detection gas bottle 10, and the highest position of the suction line 30 is lower than that of the detection liquid bottle 20, so as to ensure that a liquid level difference can be formed to provide initial power for the detection liquid to flow into the detection gas bottle 10.

[0075] In one optional embodiment, the aspiration tube 30 extends into one end of the test liquid bottle 20 near the bottom of the test liquid bottle 20, which facilitates the intake of the test liquid volume and ensures that the allowable intake volume of test liquid is sufficient.

[0076] In one optional embodiment, the test gas cylinder 10 is provided with a scale line for reading data. The volume of liquid in the test gas cylinder 10 can be obtained directly or indirectly through the scale line, which facilitates data reading to evaluate purity.

[0077] Another aspect of this application provides a chlorine purity detection system, which includes a chlorine supply pipeline (not shown in the figure) and the aforementioned gas purity detection device 100, wherein the chlorine supply pipeline is connected to the detection gas cylinder 10 in the gas purity detection device 100.

[0078] In this embodiment, the chlorine supply line is connected to the inlet line 50. Since the target gas chlorine will pollute the atmosphere, one end of the exhaust line 40 in the gas purity detection device 100 extends into the detection liquid bottle 20 and is submerged in the detection liquid. Furthermore, the detection liquid can be a liquid alkali, including, for example, sodium hydroxide solution, sodium carbonate solution, etc., but is not limited to liquid alkali.

[0079] The gas purity detection device 100 can be directly installed on the chlorine pipeline of the equipment, and the chlorine purity can be detected on site, avoiding the cumbersome operation of taking samples and sending them for testing each time. The cost of each test is the amount of liquid alkali in the test bottle 20, which greatly reduces the testing cost.

[0080] To meet corrosion requirements, the gas cylinder 10, the liquid cylinder 20, all pipelines, and all valves can be supported by corrosion-resistant materials, such as titanium alloys.

[0081] The table below shows the relevant data for measuring chlorine gas concentrations between 10% and 90% using gas cylinder 10 (8*8*30cm) and liquid cylinder 20 (φ15*15cm). Based on the specifications of gas cylinder 10, its volume is 1920mL.

[0082]

[0083] The concentration data can be the ratio of the liquid level in the gas cylinder 10 to the height of the gas cylinder 10, or the ratio of the readable volume of the gas cylinder to the total volume of the gas cylinder 10. Based on the data in the table, the error between the read concentration data and the chlorine concentration is within 1%, meaning that the gas purity detection device 100 has high detection accuracy. Of course, this gas purity detection device 100 is not limited to chlorine purity detection.

[0084] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A gas purity detection device, characterized in that, include: Test gas cylinder (10) is used to contain the gas to be tested; The detection liquid bottle (20) is used to contain the detection liquid and can be connected to the external atmospheric environment. The detection liquid can react chemically with the gas to be detected. An exhaust pipe (40) is provided with a second switching valve (41) and extends outward from the test gas cylinder (10); and A suction line (30) is connected between the detection gas cylinder (10) and the detection liquid bottle (20) and is provided with a first switching valve (31). The suction line (30) is located at one end of the detection liquid bottle (20) near the bottom of the detection liquid bottle (20) so that the detection liquid can enter the detection gas cylinder (10) through the suction line (30) under the action of siphon effect.

2. The gas purity detection device according to claim 1, characterized in that, At least a portion of the test liquid bottle (20) is higher than the test gas bottle (10), and the highest point of the suction line (30) is lower than the top wall of the test liquid bottle (20).

3. The gas purity detection device according to claim 1, characterized in that, The liquid aspiration tube (30) extends into one end of the test liquid bottle (20) and is spaced apart from the bottom wall of the test liquid bottle (20).

4. The gas purity detection device according to claim 1, characterized in that, The liquid suction line (30) is located on the top wall of the detection gas cylinder (10) at the connection point of the detection gas cylinder (10); The exhaust pipe (40) is located on the top wall of the test gas cylinder (10) at the connection point of the test gas cylinder (10).

5. The gas purity detection device according to claim 1, characterized in that, The end of the exhaust pipe (40) away from the test gas cylinder (10) extends into the test liquid bottle (20) and is submerged in the test liquid.

6. The gas purity detection device according to claim 1, characterized in that, The bottom wall of the test gas cylinder (10) is connected to the main gas cylinder line (11), and the main gas cylinder line (11) is equipped with a third switch valve (111).

7. The gas purity detection device according to claim 6, characterized in that, It also includes an air inlet pipe (50) and a gas cylinder drain pipe (60). The air inlet pipe (50) is connected to the main gas cylinder line (11) and is equipped with a fourth switch valve (51). The gas cylinder drain pipe (60) is connected to the main gas cylinder line (11) and is equipped with a fifth switch valve (61).

8. The gas purity detection device according to claim 1, characterized in that, The top wall of the test liquid bottle (20) is connected to a liquid injection pipe (21), and the bottom wall of the test liquid bottle (20) is connected to a liquid bottle drain pipe (22). The liquid injection pipeline (21) is equipped with a sixth switch valve (211), and the liquid bottle drain pipeline (22) is equipped with a seventh switch valve (221).

9. The gas purity detection device according to any one of claims 1 to 8, characterized in that, The outer peripheral wall of the detection gas cylinder (10) has a window for observing the liquid level and a scale line in the height direction.

10. A chlorine purity detection system, characterized in that, It also includes a chlorine supply pipeline and a gas purity detection device (100) according to any one of claims 1 to 9, wherein the chlorine supply pipeline is connected to the detection gas cylinder (10) in the gas purity detection device (100).

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