Toxic gas test contamination cylinder and detection system

Abstract

The invention relates to a toxic gas test contamination cylinder and a detection system, and the contamination cylinder comprises a cylinder body which is provided with a gas inlet; a biological cage is loaded on the tank bottom; the lifting unit is connected with the cylinder body, and the cylinder body is driven by the lifting unit to move relative to the cylinder bottom, so that the toxic gas test contamination cylinder is automatically opened and closed, and the risk that the toxic gas test contamination cylinder is infected by toxic gas when being manually opened by personnel is avoided. According to the interval time required by the experiment, the lifting unit drives the cylinder body to be opened at regular time, and the living state of the organisms in the biological cage is observed through the monitoring unit, so that an experimenter can carry out remote monitoring conveniently, and the safety can be effectively improved when the experimenter is far away from a poison source.

Description

Technical Field

[0001] The present application relates to the field of toxic gas detection, and particularly to a toxic gas test exposure tank and a detection system. Background Art

[0002] Sulfur hexafluoride is an inorganic compound, which is a colorless, odorless, non-toxic, non-flammable and stable gas under normal temperature and pressure. Its octahedral molecular structure gives it a small bond distance, high bond energy and high stability. Due to the chemical and electrical properties of sulfur hexafluoride, sulfur hexafluoride gas is the most widely used insulating and arc-extinguishing medium in the power industry. Although alternative gases are being extensively studied and demonstrated due to the high global warming potential value of sulfur hexafluoride gas, it is still widely used in the power industry at the present stage due to its excellent chemical stability and electrical insulation and arc-extinguishing performance.

[0003] Although sulfur hexafluoride gas itself is non-toxic, most of its decomposition products under the action of electric arc have strong corrosiveness and toxicity. In the power industry, the biological toxicity detection of sulfur hexafluoride gas is of great significance for gas acceptance and the supervision of the gas quality of operating equipment.

[0004] Currently, an existing toxicity test device for sulfur hexafluoride gas includes: a first gas pipe, a second gas pipe, a gas mixer and an exposure tank; the first gas pipe is used to communicate with a sulfur hexafluoride gas source, and is provided with a first mass flow controller thereon; the second gas pipe is used to communicate with an oxygen source, and is provided with a second mass flow controller thereon; the gas mixer has a cavity; the above-mentioned first gas pipe and second gas pipe are respectively communicated with the cavity of the gas mixer; the exposure tank is communicated with the above-mentioned cavity through a mixed gas delivery pipe; the exposure tank is provided with an exhaust pipe communicated with the air. Connect the first gas pipe to the sulfur hexafluoride gas source and the second gas pipe to the oxygen source; make the first mass flow controller control the flow rate of sulfur hexafluoride and the second mass flow controller control the flow rate of oxygen, and ensure that the volume ratio of sulfur hexafluoride to oxygen at the gas mixer meets the requirements of the "DL / T 921-2005 Standard for Biological Test Methods of Sulfur Hexafluoride Gas Toxicity", specifically 79:21. During operation, sulfur hexafluoride gas and oxygen reach the cavity of the gas mixer and are automatically mixed, and after mixing, they reach the exposure tank through the mixed gas delivery pipe. Use the above-mentioned toxicity test device to continuously expose mice for 24 hours and observe for 72 hours to check whether the mice have poisoning symptoms. However, there are the following problems in the actual test process: the biological toxicity test of sulfur hexafluoride gas has a long duration, and the test personnel need to record the survival status of the mice every hour during 96 hours, and it is easy to cause personal injury when there are toxic components in the gas. Summary of the Invention

[0005] To solve the above technical problems, the present application provides the following technical solutions:

[0006] On the one hand, a toxic gas test exposure cylinder provided by the present application includes:

[0007] A cylinder body with an air inlet formed thereon;

[0008] A cylinder bottom on which a biological cage is loaded; and

[0009] A lifting unit connected to the cylinder body. Under the drive of the lifting unit, the cylinder body moves to a first height position or a second height position;

[0010] When the cylinder body is in the first height position, the cylinder body and the cylinder bottom are closed, so that the biological cage is located in the closed space formed by the combination of the cylinder body and the cylinder bottom;

[0011] When the cylinder body is in the second height position, the cylinder body and the cylinder bottom are separated, so that the cylinder body is away from the biological cage.

[0012] In one implementation, the inside of the cylinder body has a receiving cavity, and an opening is formed at the bottom of the cylinder body. The air inlet, the opening and the receiving cavity are communicated.

[0013] In one implementation, the cylinder body has a first sealing cover, and the cylinder bottom has a second sealing cover. When the cylinder body is in the first height position, the first sealing cover is pressed against the second sealing cover.

[0014] In one implementation, the cylinder body is further provided with an air outlet communicated with the receiving cavity. On the cylinder body, the setting position of the air outlet is higher than the setting position of the air inlet.

[0015] In one implementation, the biological cage includes a cage body, and a water supply element and a feeding element are arranged inside the cage body.

[0016] On the other hand, a toxic gas test detection system provided by the present application further includes:

[0017] A gas mixing module for supplying a mixed gas composed of oxygen and a toxic gas;

[0018] An exposure cylinder module including a plurality of toxic gas test exposure cylinders provided in the above implementation and a monitoring unit arranged corresponding to the toxic gas test exposure cylinders. The mixed gas supplied by the gas mixing module enters the toxic gas test exposure cylinder through the air inlet; and

[0019] A control and analysis module communicatively connected to the monitoring unit;

[0020] Wherein, when the cylinder body is in the second height position, the monitoring unit monitors the survival state of the organisms in the biological cage.

[0021] In one embodiment, the gas mixing module includes an oxygen tank, gas tanks with the same quantity as the toxicity gas test exposure cylinders, and a mixer. The mixer is correspondingly arranged with the toxicity gas test exposure cylinders. The oxygen supplied by the oxygen tank and the toxicity gas supplied by the gas tanks are mixed by the mixer and then sent into the corresponding toxicity gas test exposure cylinders.

[0022] In one embodiment, it further includes an exhaust gas recovery module, which includes a separator, a liquefier, a storage tank, and a degradation unit;

[0023] The intake end of the separator is connected to the outlet, and the two outlet ends of the separator are respectively connected to the liquefier and the degradation unit, and the storage tank is connected to the liquefier;

[0024] The toxicity gas separated from the exhaust gas by the separator enters the storage tank through the liquefier.

[0025] In one embodiment, the exhaust gas recovery module further includes a gas monitor and a compressor. The gas monitor is connected to the outlet end of the degradation unit, the compressor is arranged in parallel with the degradation unit, and the compressor is electrically connected to the gas monitor.

[0026] In one embodiment, the control and analysis module includes a server and a personal terminal, and the personal terminal, the monitoring unit are communicatively connected to the server.

[0027] This application has at least the following beneficial effects:

[0028] In this application, the lifting unit drives the cylinder body to move relative to the cylinder bottom to realize the automatic opening and closing of the toxicity gas test exposure cylinder, avoiding the risk of personnel being infected by toxicity gas when manually opening the toxicity gas test exposure cylinder. According to the required interval time of the experiment, the lifting unit drives the cylinder body to open regularly, and the monitoring unit observes the survival state of the organisms in the biological cage, so as to facilitate the experimenters to implement remote monitoring. The experimenters staying away from the toxicity source can effectively improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the exposure cylinder module at the second height position provided by an embodiment of this application.

[0030] Figure 2 It is a schematic diagram of the exposure cylinder module at the first height position provided by an embodiment of this application.

[0031] Figure 3 It is a simplified diagram of the toxicity gas test detection system provided by an embodiment of this application.

[0032] Figure 4 It is a partial structure simplified diagram of the gas mixing module provided by an embodiment of this application.

[0033] Figure 5Schematic structural diagram of the tail gas recovery module provided by an embodiment of the present application.

[0034] Figure 6 Schematic structural diagram of the poisoning tank module provided by an embodiment of the present application.

[0035] Figure 7 Schematic diagram of the control analysis module and the monitoring unit provided by an embodiment of the present application.

[0036] Reference numerals:

[0037] 100, gas mixing module;

[0038] 11, oxygen tank; 12, poison gas tank; 13, pressure reducing valve; 14, pressure stabilizing valve; 15, flow stabilizing valve; 16, solenoid valve; 17, flow meter; 18, mixer; 19, detector;

[0039] 200, poisoning tank module;

[0040] 21, cylinder body; 22, lifting unit; 23, bottom of the cylinder; 24, biological cage; 25, monitoring unit;

[0041] 211, air inlet; 212, air outlet; 213, first sealing cover;

[0042] 231, second sealing cover; 232, boss;

[0043] 241, cage body; 242, water supply element; 243, feeding element;

[0044] 300, tail gas recovery module;

[0045] 31, separator; 32, liquefier; 33, storage; 34, degradator; 35, gas monitor; 36, first control valve; 37, second control valve; 38, compressor;

[0046] 400, control analysis module;

[0047] 41, server; 42, personal terminal. Detailed implementation manners

[0048] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe in detail the specific implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0049] In the description of the present application, it should be understood that if terms such as "upper", "lower", "vertical", "inner", "outer", "axial", "circumferential" appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] In the present application, unless otherwise clearly specified and defined, if terms such as "mounted", "connected", "coupled", "fixed" appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0051] In the present application, unless otherwise clearly specified and defined, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. It should be noted that if an element is referred to as being "fixed to" or "disposed on" or "provided on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "upper", "lower" and similar expressions used in the present application are only for the purpose of illustration and do not represent the only implementation.

[0052] The embodiments of the present application will be specifically described below with reference to the drawings.

[0053] Refer to Figures 1-3As shown, in some embodiments of the present application, a toxic gas test detection system is provided, including: a gas mixing module 100, a poisoning tank module 200, an exhaust gas recovery module 300, and a control and analysis module 400. The gas mixing module 100 is used to supply a mixed gas composed of oxygen and a poisonous gas. The poisoning tank module 200 includes several toxic gas test poisoning tanks, and a biological cage 24 is accommodated in the toxic gas test poisoning tank. The mixed gas supplied by the gas mixing module 100 enters different toxic gas test poisoning tanks respectively. The mixed gas located in the toxic gas test poisoning tank is finally sent to the exhaust gas recovery module 300, and the exhaust gas recovery module 300 is used to collect the exhaust gas discharged from the air outlet 212 of the toxic gas test poisoning tank. The exhaust gas can be understood as the gas formed after the mixed gas supplied by the gas mixing module 100 enters the toxic gas test poisoning tank and is mixed again with the gas discharged under the respiration of the organisms in the biological cage 24 and the mixed gas filled in the toxic gas test poisoning tank. Since oxygen will be consumed by the respiration of the organisms, the oxygen content in the exhaust gas will be lower than the oxygen content in the mixed gas.

[0054] In this solution, in combination with Figure 4 As shown, the gas mixing module 100 includes an oxygen tank 11, a poisonous gas tank 12 having the same number as the toxic gas test poisoning tanks, and a mixer 18. The mixer 18 is arranged in one-to-one correspondence with the toxic gas test poisoning tanks. The oxygen supplied by the oxygen tank 11 and the poisonous gas supplied by the poisonous gas tank 12 are mixed by the mixer 18 and then sent into the corresponding toxic gas test poisoning tanks. The number of the poisonous gas tanks 12 is 1 to 8. Exemplarily, sulfur hexafluoride is stored in the poisonous gas tank 12. The oxygen in the oxygen tank 11 is respectively supplied into each mixer 18, and the poisonous gas tanks 12 are supplied into the mixer 18 in one-to-one correspondence to simulate the oxygen and nitrogen contents in the air and prepare a test mixed gas with a volume fraction of 79% sulfur hexafluoride and a volume fraction of 21% oxygen. Since the oxygen content in the mixed gas is relatively low, the oxygen in a single oxygen tank 11 can supply the oxygen in the mixed gas in multiple toxic gas test poisoning tanks, so as to reduce the volume of the supply end in the gas mixing module 100.

[0055] More specifically, the connection paths between the oxygen tank 11 and the poisonous gas tank 12 and the mixer 18 are sequentially provided with a pressure reducing valve 13, a pressure stabilizing valve 14, a flow stabilizing valve 15, a solenoid valve 16, and a flowmeter 17 along the gas flow direction. The high-pressure gas in the oxygen tank 11 and / or the poisonous gas tank 12 is reduced in flow rate by the pressure reducing valve 13, the pressure stabilizing valve 14, and the flow stabilizing valve 15 and then enters the mixer 18 to improve the proportion accuracy of each component gas in the mixed gas. The flowmeter 17 can accurately obtain the supply amount of each component gas. The solenoid valve 16 can control the gas supply. A detector 19 is also provided between the mixer 18 and the toxic gas test poisoning tank, and the detector 19 is used to detect the oxygen content in the finally sent mixed gas.

[0056] Furthermore, referring toFigure 5 As shown, the tail gas recovery module 300 specifically includes a separator 31, a liquefier 32, a storage tank 33, and a degradation unit 34. The tail gas can be separated into toxic gas and other gases in the separator 31. The separator 31 has an inlet end and two outlet ends. The inlet end of the separator 31 is connected to the outlet port 212. The tail gas in the toxic gas test exposure tank enters the separator 31 through the inlet end for separation. The two outlet ends of the separator 31 are respectively connected to the liquefier 32 and the degradation unit 34. The separated toxic gas enters the liquefier 32 through one of the outlet ends, and the other gases enter the degradation unit 34 through the other outlet end.

[0057] The storage tank 33 is connected to the liquefier 32. The toxic gas separated from the tail gas by the separator 31 is liquefied by the liquefier 32 and then stored in the storage tank 33. The other gases transported to the degradation unit 34 are discharged into the external atmosphere. To prevent the leakage of toxic gas into the external atmosphere and cause personal danger, the separator 31 separates the toxic gas from the tail gas, liquefies the toxic gas and stores it in the storage tank 33, and can also reuse the toxic gas. In addition, when separating the tail gas, it is inevitable that some toxic gas flows into the degradation unit 34 and there is a risk of being discharged into the atmospheric environment together with other gases. To avoid the occurrence of the above risks, the degradation unit 34 also has the function of decomposing and / or absorbing toxic gas to reduce the risk of toxic gas leakage.

[0058] More specifically, the outlet end of the degradation unit 34 is sequentially connected with a gas monitor 35 and a first control valve 36. The gas monitor 35 is used to detect whether there is toxic gas in the gas discharged from the degradation unit 34. The gas monitor 35 controls the opening and closing of the first control valve 36. When the gas monitor 35 detects that there is toxic gas in the gas discharged from the degradation unit 34, it controls the first control valve 36 to close to prevent the gas from being discharged. In addition, a second control valve 37 and a compressor 38 are connected in parallel with the degradation unit 34. The gas monitor 35 is electrically connected to the second control valve 37 and the compressor 38, and controls whether the second control valve 37 and the compressor 38 work according to the monitoring result of the gas monitor 35. Exemplarily, when the gas monitor 35 detects that there is toxic gas in the gas discharged from the degradation unit 34, while controlling the first control valve 36 to close to prevent the gas from being discharged, it controls the second control valve 37 and the compressor 38 to open, so that the gas discharged from the degradation unit 34 is sent back to the degradation unit 34 again.

[0059] In this solution, the parallel connection of the degradator 34, the second control valve 37, and the compressor 38 is specifically as follows: A gas distribution path is provided, and both ends of the gas distribution path are respectively connected to the intake end and the outlet end of the degradator 34, and the second control valve 37 and the compressor 38 are arranged on this gas distribution path. When the second control valve 37 and the compressor 38 are not working, the gas distribution path is in a blocked state, and the tail gas separated by the separator 31 can only pass through the degradator 34. When the second control valve 37 and the compressor 38 are working, the high-pressure gas is discharged from one end of the gas distribution path close to the intake end of the degradator 34, and after converging with the tail gas separated by the separator 31, it flows into the degradator 34 again for degradation.

[0060] In some embodiments of the present application, referring to Figure 6 , 7 , the gas poisoning cylinder module 200 further includes a monitoring unit 25. The monitoring unit 25 is correspondingly arranged with the toxic gas test gas poisoning cylinder, and the control and analysis module 400 is communicatively connected to the monitoring unit 25. The corresponding arrangement of the monitoring unit 25 and the toxic gas test gas poisoning cylinder specifically means that the number of the monitoring units 25 is the same as the number of the toxic gas test gas poisoning cylinders, and the monitoring units 25 correspond to the toxic gas test gas poisoning cylinders one by one, so that the monitoring unit 25 independently monitors the survival state of the organisms in the toxic gas test gas poisoning cylinders. More specifically, the control and analysis module 400 includes a server 41 and a personal terminal 42. The monitoring unit 25 is communicatively connected to the server 41 wirelessly, and the server 41 is communicatively connected to the personal terminal 42. Exemplarily, the monitoring unit 25 is a monitoring camera that performs real-time monitoring and image recording on the organisms in the biological cage. The monitoring unit 25 transmits the image information to the server 41 for storage, and the experimenter views the image information stored on the server 41 on the personal terminal 42, so as to facilitate the experimenter to remotely monitor the physiological state of the organisms in the toxic gas test gas poisoning cylinders, avoid the experimenter from contacting the toxic gas, and ensure personal safety.

[0061] Furthermore, a biological survival state analysis module is provided in the server 41. When the server 41 receives the image record, it analyzes the image record according to the biological survival state analysis module to realize the intelligent analysis and alarm of the biological survival state, monitors the whole process of the experiment and automatically analyzes and alarms, reducing the work intensity of the experimenters.

[0062] In some embodiments of the present application, such as Figure 1 , 2As shown in the figure, the present application also provides a toxic gas test exposure tank, including: a tank body 21, a lifting unit 22, and a tank bottom 23. The lifting unit 22 is used to drive the tank body 21 to move relative to the tank bottom 23. An air inlet 211 and an air outlet 212 are provided on the tank body 21. A biological cage 24 is loaded on the tank bottom 23, and the biological cage 24 contains organisms for experiments. The lifting unit 22 is connected to the tank body 21. Under the drive of the lifting unit 22, the tank body 21 moves to a first height position or a second height position.

[0063] In this solution, when the tank body 21 is at the first height position, the tank body 21 and the tank bottom 23 are closed, so that the biological cage 24 is located in the closed space formed by the closure of the tank body 21 and the tank bottom 23. Under the drive of the lifting unit 22, the tank body 21 can also move to the second height position. When the tank body 21 is at the second height position, the tank body 21 moves away from the tank bottom 23, so that the biological cage 24 is exposed to the external environment. At this time, since the tank body 21 is far from the biological cage 24, the monitoring unit 25 can directly monitor the organisms in the biological cage 24.

[0064] The tank body 21 and the tank bottom 23 are arranged vertically. The tank body 21 has an accommodation cavity, and an opening is provided at the bottom of the tank body 21. The air inlet 211, the air outlet 212, and the opening are communicated with the accommodation cavity. The biological cage 24 extends into the accommodation cavity from the opening until the tank body 21 abuts against the tank bottom 23, so that a sealed connection is formed between the tank body 21 and the tank bottom 23.

[0065] Further, the sealed connection between the tank body 21 and the tank bottom 23 includes: the tank body 21 has a first sealing cover 213, the first sealing cover 213 is located on the circumferential outer side of the opening, the tank bottom 23 has a second sealing cover 231. When the tank body 21 is at the first height position, the first sealing cover 213 is pressed against the second sealing cover 231, and the opening of the tank body 21 is sealed by the first sealing cover 213 and the second sealing cover 231, so that the accommodation cavity and the tank bottom 23 form a closed space.

[0066] Furthermore, when the tank body 21 is at the second height position, the top of the biological cage 24 is not lower than the opening. Preferably, the top of the biological cage 24 is sealedly connected to the opening. The top of the biological cage 24 has elasticity to realize the sealing between the top of the biological cage 24 and the inner wall of the opening. When the tank body 21 is at the second height position, after the biological cage 24 is removed from the accommodation cavity, the accommodation cavity remains sealed, so as to reduce the amount of toxic mixed gas overflowing from the accommodation cavity, ensure that the toxic gas can be recovered as much as possible, and reduce the risk to the personal safety of the operator.

[0067] In some embodiments of the present application, the biological cage 24 includes a cage body 241, and a water supply element 242 and a feeding element 243 are arranged inside the cage body 241. The water supply element 242 and the feeding element 243 automatically supply drinking water and food for the test organisms within 96 hours of the test.

[0068] Exemplarily, in this solution, the toxic gas is sulfur hexafluoride gas, and the test subjects are mice.

[0069] Example 1

[0070] This example provides a biological toxicity test detection system for sulfur hexafluoride gas. In this example, 5 bottles of sulfur hexafluoride gas are detected simultaneously. 1 bottle of oxygen and 5 bottles of sulfur hexafluoride gas are mixed separately and then the toxicity test is carried out. The flow rate of each bottle of sulfur hexafluoride gas is (200±2) mL / min, the oxygen flow rate of each channel is (55±1) mL / min, and the oxygen content in the mixed gas is maintained at (21±0.2)%. 25 mice are evenly placed into the biological cages 24 of 5 exposure chambers, and drinking water and food are supplied. The mice are continuously exposed to the gas in a closed state of the chamber body 21 and the chamber bottom 23 for 24 hours, and then the sulfur hexafluoride and oxygen gas sources are closed. The automatic lifter is controlled to separate the chamber body 21 from the chamber bottom 23, so that the mice are exposed to the air environment and observed for 72 hours. The tail gas of the test is discharged after the sulfur hexafluoride gas is filtered by the tail gas recovery module 300. During the whole test process, the control and on-line monitoring and analysis of the whole system are realized through the control and analysis module 400, and the parameters such as the flow rate and concentration of the mixed gas and the tail gas emission index all meet the expected requirements.

[0071] Example 2

[0072] This example provides a biological toxicity test detection system for sulfur hexafluoride gas. In this example, 8 bottles of sulfur hexafluoride gas are detected simultaneously. 1 bottle of oxygen and 8 bottles of sulfur hexafluoride gas are mixed separately and then the toxicity test is carried out. The flow rate of each bottle of sulfur hexafluoride gas is (200±2) mL / min, the oxygen flow rate of each channel is (55±1) mL / min, and the oxygen content in the mixed gas is maintained at (21±0.2)%. 40 mice are evenly placed into the biological cages 24 of 8 exposure chambers, and drinking water and food are supplied. The mice are continuously exposed to the gas in a closed state of the chamber body 21 and the chamber bottom 23 for 24 hours, and then the sulfur hexafluoride and oxygen gas sources are closed. The automatic lifter is controlled to separate the chamber body 21 from the chamber bottom 23, so that the mice are exposed to the air environment and observed for 72 hours. The tail gas of the test is discharged after the sulfur hexafluoride gas is filtered by the tail gas recovery module 300, and the purified sulfur hexafluoride gas is stored and recycled. During the whole test process, the control and on-line monitoring and analysis of the whole system are realized through the control and analysis module 400, and the control of the living conditions of the mice, the flow rate and concentration of the mixed gas, the tail gas emission index and other parameters all meet the expected requirements.

[0073] The biological toxicity test detection system for sulfur hexafluoride gas adopts an automated control technology, enabling the entire test process to be remotely operated and controlled by a computer. It uses an intelligent flowmeter with high precision to accurately control the gas percentages of sulfur hexafluoride and oxygen, and realizes automatic feeding of mice and automatic lifting of the cylinder body 21 to achieve automatic exposure to the poison for 24 hours. The monitoring unit 25 is used to remotely monitor the survival status of the mice, minimizing the contact time between the test personnel and the test equipment and gas to improve the safety of the test personnel.

[0074] The above embodiments are used to further illustrate the present application, but do not limit the present application to these specific embodiments. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be understood to be within the protection scope of the present application.

Claims

1. A toxic gas test tank, characterized in that: include: A cylinder body (21), wherein an air inlet (211) is provided on the cylinder body (21); A tank bottom (23), on which a biological cage (24) is loaded; and A lifting unit (22), wherein the lifting unit (22) is connected to the cylinder body (21), and under the drive of the lifting unit (22), the cylinder body (21) moves to a first height position or a second height position; When the cylinder body (21) is at a first height position, the cylinder body (21) and the cylinder bottom (23) are closed together, so that the biological cage (24) is located in a closed space where the cylinder body (21) and the cylinder bottom (23) are closed together; When the cylinder body (21) is at a second height position, the cylinder body (21) is separated from the cylinder bottom (23), so that the cylinder body (21) is away from the biological cage (24).

2. The toxic gas test tank according to claim 1, characterized in that: The cylinder body (21) has a containing cavity inside, and an opening is provided at the bottom of the cylinder body (21), and the air inlet (211) and the opening are in communication with the containing cavity.

3. The toxic gas test tank according to claim 2, characterized in that: The cylinder body (21) has a first sealing cover (213), and the cylinder bottom (23) has a second sealing cover (231). When the cylinder body (21) is at a first height position, the first sealing cover (213) is pressed onto the second sealing cover (231).

4. The toxic gas test tank according to claim 2, characterized in that: The cylinder body (21) is also provided with an air outlet (212) in communication with the accommodating chamber; on the cylinder body (21), the air outlet (212) is arranged at a position higher than the air inlet (211).

5. The toxic gas test contamination tank according to any one of claims 1 to 4, characterized in that: The biological cage (24) comprises a cage body (241), wherein the cage body (241) is provided with a water supply element (242) and a feeding element (243).

6. A toxic gas test detection system, characterized in that: include: A gas mixing module (100), the gas mixing module (100) being used to supply a mixed gas consisting of oxygen and poisonous gas; A poison test tank module (200), wherein the poison test tank module (200) comprises a plurality of toxic gas test tanks according to any one of claims 1 to 6 and monitoring units (25) arranged corresponding to the toxic gas test tanks, and the mixed gas supplied by the gas mixing module (100) enters the toxic gas test tanks through the gas inlet (211); as well as A control and analysis module (400), the control and analysis module (400) being communicatively connected with the monitoring unit (25); Wherein, when the cylinder body (21) is at the second height position, the monitoring unit (25) monitors the living state of the organisms in the biological cage (24).

7. The toxic gas test detection system according to claim 6, characterized in that: The gas mixing module (100) comprises an oxygen tank (11), poison gas tanks (12) whose number matches the number of the poison gas test contamination cylinders, and a mixer (18). The mixer (18) is arranged corresponding to the poison gas test contamination cylinders. The oxygen supplied by the oxygen tank (11) and the poison gas supplied by the poison gas tank (12) are mixed by the mixer (18) and then sent to the corresponding poison gas test contamination cylinder.

8. The toxic gas test detection system according to claim 6, characterized in that: The system also includes a tail gas recovery module (300), wherein the tail gas recovery module (300) includes a separator (31), a liquefier (32), a storage device (33) and a degrader (34); The air inlet end of the separator (31) is connected to the air outlet (212) of the cylinder (21), the two air outlet ends of the separator (31) are respectively connected to the liquefier (32) and the degrader (34), and the storage (33) is connected to the liquefier (32); The separator (31) is used to separate the poisonous gas from the tail gas and allow the poisonous gas to enter the storage (33) via the liquefier (32).

9. The toxic gas test detection system according to claim 8, characterized in that: The tail gas recovery module (300) further comprises a gas monitor (35) and a compressor (38), wherein the gas monitor (35) is connected to the gas outlet of the degrader (34), the compressor (38) is arranged in parallel with the degrader (34), and the compressor (38) is electrically connected to the gas monitor (35).

10. The toxic gas test detection system according to any one of claims 7 to 9, characterized in that: The control and analysis module (400) comprises a service end (41) and a personal terminal (42); the personal terminal (42) and the monitoring unit (25) are communicatively connected with the service end (41).

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