Safe analysis device for water content of toxic gas or toxic liquid easy to gasify

Abstract

The utility model discloses a water content safety analysis device for toxic gas or toxic liquid easy to gasify, and belongs to the technical field of drug analysis safety. According to the technical scheme, the device comprises a glove box, a moisture meter, an analytical balance, a waste liquid treatment tank and a controller, a shell is further arranged on the outer side of the glove box, a double-layer structure is formed between the glove box and the shell, and the double-layer structure is provided with a circulating water inlet and a circulating water outlet; a nitrogen inlet is formed below the glove box, a nitrogen outlet is formed in the top of the glove box, the nitrogen outlet is connected with an external waste gas treatment system, and the nitrogen inlet and the nitrogen outlet are connected with a nitrogen inlet pipeline and a nitrogen outlet pipeline respectively. According to the utility model, toxic gas or toxic liquid easy to gasify is prevented from being in direct contact with analysts, so that the life safety of the analysts is ensured, the influence of air humidity on gas water content analysis results is also avoided, and the accuracy of water content analysis data is improved on the premise of ensuring the life safety.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the toxic product analysis safety technical field, concretely relates to a kind of toxic gas or easy gasification toxic liquid water content safety analysis device. BACKGROUND

[0002] Highly toxic gases such as hydrogen cyanide, hydrogen sulfide and chlorine may be used in the experimental operation process, which poses a serious threat to human health. Hydrogen cyanide can cause brain tissue hypoxia and cerebral vasospasm, causing symptoms such as headache, vomiting, visual impairment, dyspnea and arrhythmia. Hydrogen sulfide is a strong neurotoxin that only stimulates the respiratory tract and eyes at low concentrations, but affects the central nervous system at high concentrations, leading to coma, respiratory center paralysis and even death. Chlorine has a strong suffocating odor, and long-term high-concentration inhalation can harm the skin mucosa, respiratory and gastrointestinal systems. Therefore, it is necessary to strictly prevent the leakage and exposure of these toxic gases or easily gasified toxic liquids to ensure personnel safety.

[0003] The existing analysis safety protection equipment in the laboratory is generally a fume hood or a glove box. When analyzing samples in the fume hood, the glass of the fume hood needs to be lifted to a certain height above the table surface to facilitate hand operation by the analyst, which allows volatile toxic substances to easily leak out from the lower end of the fume hood glass, posing a threat to the laboratory environment and the safety of the analyst. Most laboratory glove boxes are sealed devices without a gas replacement system in the cavity. When analyzing toxic and highly volatile samples, the accumulation of toxic substances can induce safety accidents. For samples with strong water absorption, environmental factors cannot be controlled, and the accuracy of the analysis data cannot be guaranteed. Additionally, the glove box is small in size and has no power interface, so the equipment required during the experiment cannot be fully accommodated. When analyzing samples, the sample needs to be transferred in and out of the glove box, which cannot guarantee the safety of the analyst and the accuracy of the analysis data. From the above situation, neither the fume hood nor the existing glove box can perform toxic gas or easily gasified toxic liquid water content analysis, and the accuracy of the data and the safety of the analyst cannot be guaranteed during the analysis process. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of toxic gas or easy gasification toxic liquid water content safety analysis device, avoids the direct contact of toxic gas or easy gasification toxic liquid with analyst, guarantees the life safety of analyst, also avoids the influence of air humidity on gas water content analysis result, improves the accuracy of water content analysis data under the premise of guaranteeing life safety.

[0005] The technical solution of the utility model is as follows:

[0006] The application relates to a toxic gas or easily-gasified toxic liquid water content safety analysis device, which comprises a glove box, a moisture meter, an analysis balance, a waste liquid treatment tank and a controller; an outer shell is further arranged on the outer side of the glove box, a double-layer structure is formed between the glove box and the outer shell, circulating water inlets and circulating water outlets are arranged on the double-layer structure, water inlets and water outlets are arranged on the circulating water inlets and the circulating water outlets respectively, the water inlets and the water outlets are electrically connected with the controller; an operation opening is arranged on the front side of the glove box, a sealing glove is arranged on the operation opening, a box door is movably connected to the left side of the side of the glove box, a nitrogen gas inlet is arranged below the glove box, a nitrogen gas outlet is arranged on the top of the glove box, the nitrogen gas outlet is connected with an external waste gas treatment system, the nitrogen gas inlet and the nitrogen gas outlet are connected with nitrogen gas inlet pipelines and nitrogen gas outlet pipelines respectively, the nitrogen gas inlet pipelines and the nitrogen gas outlet pipelines are provided with stop valves, the stop valves are electrically connected with the controller, a dew point instrument is connected with the nitrogen gas outlet, temperature sensors and humidity sensors are arranged in the glove box, a temperature and humidity control panel is arranged on the front side of the glove box, the temperature sensors, the humidity sensors and the temperature and humidity control panel are electrically connected with the controller; the moisture meter, the analysis balance and the waste liquid treatment tank are arranged in the glove box, a liquid outlet pipe is arranged on the waste liquid treatment tank and penetrates through the glove box, and a switch valve is arranged on the liquid outlet pipe; a hydrogen cyanide monitor placing frame is arranged on the front side of the glove box 1, and a hydrogen cyanide monitor is arranged in the hydrogen cyanide monitor placing frame.

[0007] Preferably, a sealing strip is arranged at the connection between the box door and the glove box.

[0008] Preferably, the waste liquid treatment tank is of a closed structure, a waste liquid tank pipeline is connected to the top of the waste liquid treatment tank, the other end of the waste liquid tank pipeline is connected with a waste liquid outlet of the moisture meter, a pump is arranged on the waste liquid tank pipeline, and a treatment agent is prearranged in the waste liquid treatment tank.

[0009] Preferably, a dehydration protrusion is arranged on the nitrogen gas inlet pipeline, and a drying agent is arranged in the dehydration protrusion.

[0010] Preferably, the glove box and the outer shell are made of acrylic or tempered glass.

[0011] Preferably, the toxic gas or the easily-gasified toxic liquid is one of hydrogen cyanide, hydrocyanic acid, hydrogen sulfide, chlorine and liquid chlorine.

[0012] Compared with the prior art, the application has the following beneficial effects:

[0013] 1. The circulating water inlets and the circulating water outlets arranged in the double-layer structure can control the temperature in the device, nitrogen gas with extremely low moisture content is introduced to replace the water-containing air in the closed device in the whole operation process, the nitrogen gas inlets and the nitrogen gas outlets are provided with stop valves, the stop valves can be opened or the flow rate can be controlled as required, the introduction of the nitrogen gas can achieve the purposes of humidity control and replacement of the gas in the box, and the toxic gas or the easily-gasified toxic liquid is prevented from being exploded.

[0014] 2. The nitrogen gas outlet flows out the trace toxic gas or easy gasification toxic liquid containing nitrogen gas, nitrogen gas can be installed waste gas washing bottle processing toxic gas or easy gasification toxic liquid after again into laboratory waste gas treatment system, discharge.

[0015] 3. The design of the sealing glove, the sealing strip and the sealing ring further prevents gas leakage and protects the life safety of the operator.

[0016] 4. The device integrates the moisture meter and the analytical balance, can accurately measure and analyze the moisture content in the toxic gas or the easy gasification toxic liquid, and this is crucial for monitoring the gas purity and preventing the chemical reaction or corrosion problem caused by the moisture.

[0017] 5. The dehydration protrusion and the drying agent arranged on the nitrogen gas inlet pipeline effectively remove the moisture in the nitrogen gas, ensure the purity of the nitrogen gas as the carrier gas or the protective gas, and further enhance the safety and the analysis accuracy of the device.

[0018] 6. The glove box and the shell are arranged as transparent structures, so that the operator can observe the internal condition of the device without opening the box door, and the operation risk is reduced. Meanwhile, the design of the device considers the convenience of operation, such as the sealing glove, the movable connected box door and the like, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a sectional structure schematic view of the utility model.

[0020] In the figure, 1, glove box; 2, moisture meter; 3, analytical balance; 4, waste liquid treatment tank; 5, shell; 6, circulating water inlet; 7, circulating water outlet; 8, operation opening; 9, nitrogen gas inlet; 10, nitrogen gas outlet; 11, dew point meter; 12, temperature sensor; 13, humidity sensor; 14, liquid outlet pipe; 15, hydrogen cyanide monitor placing frame; 16, temperature and humidity control panel; 17, nitrogen gas inlet pipeline; 18, nitrogen gas outlet pipeline; 19, dehydration protrusion; 20, waste liquid tank pipeline. DETAILED DESCRIPTION

[0021] In order for the personnel in the technical field to better understand the technical scheme in the utility model, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor should belong to the protection scope of the utility model.

[0022] Embodiment 1

[0023] As Figure 1 shown, the embodiment provides a kind of toxic gas or easy gasification toxic liquid water content safety analysis device, and easy gasification toxic liquid is hydrogen cyanide, including glove box 1, water meter 2 selected from Mettler C30SX coulomb moisture meter, analytical balance 3, waste liquid treatment tank 4 and controller;

[0024] The outer side of glove box 1 is also provided with shell 5, and double-layer structure is formed between glove box 1 and shell 5, the double-layer structure is provided with circulating water inlet 6 and circulating water outlet 7, the circulating water inlet 6 and the circulating water outlet 7 are respectively provided with water inlet valve and water outlet valve, and the water inlet valve and the water outlet valve are electrically connected with the controller;Glove box and shell are acrylic material.

[0025] The front of the glove box 1 is provided with an operating opening 8, and the operating opening 8 is provided with a sealing glove, the left side of the side of the glove box 1 is movably connected with a box door, and a sealing strip is arranged at the connection between the box door and the glove box 1;The right lower side of the glove box 1 is provided with a nitrogen gas inlet 9, and the top of the glove box 1 is provided with a nitrogen gas outlet 10, the nitrogen gas outlet 10 is connected with an external waste gas treatment system, or the nitrogen gas outlet 10 can be connected with an external waste gas treatment system after being preliminarily treated by a washing bottle connected with sodium hydroxide solution, the nitrogen gas inlet 9 and the nitrogen gas outlet 10 are respectively connected with a nitrogen gas inlet pipeline 17 and a nitrogen gas outlet pipeline 18, the nitrogen gas inlet pipeline 17 is provided with a dehydration protrusion 19, and a drying agent is placed in the dehydration protrusion 19, the drying agent is a common product on the market, and will not be described here;The nitrogen gas inlet pipeline 17 and the nitrogen gas outlet pipeline 18 are both provided with a stop valve, and the stop valve is electrically connected with the controller, the nitrogen gas outlet 10 is connected with a dew point meter 11, and the SDHmini dew point meter is selected, the glove box 1 is provided with a temperature sensor 12 and a humidity sensor 13, and the front of the glove box 1 is provided with a temperature and humidity control panel 16, and the temperature sensor 12, the humidity sensor 13 and the temperature and humidity control panel 16 are electrically connected with the controller;

[0026] The glove box 1 is provided with a water meter 2, an analytical balance 3 and a waste liquid treatment tank 4, the waste liquid treatment tank 4 is provided with a liquid outlet pipe 14 penetrating the glove box 1, and the liquid outlet pipe 14 is provided with an on-off valve;The waste liquid treatment tank 4 is a closed structure, the top of the waste liquid treatment tank 4 is connected with a waste liquid tank pipeline 20, the other end of the waste liquid tank pipeline 20 is connected with a waste liquid outlet of the water meter 2, a pump is arranged on the waste liquid tank pipeline 20, and a treatment reagent is preloaded in the waste liquid treatment tank 4.

[0027] The front of the glove box 1 is provided with a hydrogen cyanide monitor placing frame 15, the hydrogen cyanide monitor placing frame 15 is provided with a hydrogen cyanide monitor, and the hydrogen cyanide monitor is selected from Delger PAC 8000.

[0028] The device is used for hydrogen cyanide water content analysis, provides a safe and independent operation environment for toxic substance analysis, places all reagents and samples required for testing in the glove box 1 by opening the box door, opens the circulating water to maintain the temperature in the glove box 1 at the standard required temperature, the temperature sensor senses the temperature in the glove box 1 and transmits the signal to the controller, and the temperature is adjusted by controlling the opening degree of the water inlet valve and the water outlet valve; the nitrogen filtered through the dehydration protrusion 19 enters the glove box 1 from the nitrogen inlet 9 to replace the air in the glove box 1, the opening degree of the nitrogen is adjusted according to the humidity to maintain the humidity in the glove box 1 at a low level, the nitrogen is continuously supplied during the testing process, the waste liquid treatment tank 4 is placed in the glove box for storing the waste liquid containing hydrogen cyanide generated after analysis, the gas in the glove box 1 is discharged from the nitrogen outlet 10, the dew point instrument 11 is installed at the nitrogen outlet 10 for monitoring the water content in the device to ensure the accuracy of the analysis data, the hydrogen cyanide detector is installed at the front operation position of the analyst outside the glove box 1 for real-time monitoring of the hydrogen cyanide content in the laboratory environment during the analysis process, and the analyst can evacuate in time if the content exceeds the standard to ensure the safety of the analyst.

[0029] Although the utility model has been described in detail by referring to the attached drawings and in combination with the preferred embodiments, the utility model is not limited thereto. Those skilled in the art can make various equivalent modifications or replacements to the embodiments of the utility model without departing from the spirit and essence of the utility model, and these modifications or replacements shall be within the scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the protection scope of the claims.

Claims

1. A toxic gas or easily vaporized toxic liquid water content safety analysis device, characterized by, The glove box (1), the moisture meter (2), the analytical balance (3), the waste liquid treatment tank (4) and the controller are included. The glove box (1) is further provided with an outer shell (5) on the outside, and a double-layer structure is formed between the glove box (1) and the outer shell (5), and the double-layer structure is provided with a circulating water inlet (6) and a circulating water outlet (7), and the circulating water inlet (6) and the circulating water outlet (7) are respectively provided with a water inlet valve and a water outlet valve, and the water inlet valve and the water outlet valve are electrically connected with the controller. The front of the glove box (1) is provided with an operation opening (8), and the operation opening (8) is provided with a sealing glove, and the left side of the side of the glove box (1) is movably connected with a box door, and the nitrogen inlet (9) is arranged below the glove box (1), and the nitrogen outlet (10) is arranged on the top of the glove box (1), and the nitrogen outlet (10) is connected with an external waste gas treatment system, and the nitrogen inlet (9) and the nitrogen outlet (10) are respectively connected with a nitrogen inlet pipeline (17) and a nitrogen outlet pipeline (18), and the nitrogen inlet pipeline (17) and the nitrogen outlet pipeline (18) are respectively provided with a stop valve, and the stop valve is electrically connected with the controller, and the nitrogen outlet (10) is connected with a dew point meter (11), and the glove box (1) is provided with a temperature sensor (12) and a humidity sensor (13), and the front of the glove box (1) is provided with a temperature and humidity control panel (16), and the temperature sensor (12), the humidity sensor (13) and the temperature and humidity control panel (16) are electrically connected with the controller. The glove box (1) is provided with a moisture meter (2), an analytical balance (3) and a waste liquid treatment tank (4), and the waste liquid treatment tank (4) is provided with a liquid outlet pipe (14) penetrating through the glove box (1), and the liquid outlet pipe (14) is provided with an on-off valve. The front of the glove box (1) is provided with a hydrogen cyanide monitor placing frame (15), and the hydrogen cyanide monitor placing frame (15) is provided with a hydrogen cyanide monitor.

2. The toxic gas or easily gasifiable toxic liquid water content safety analysis device according to claim 1, wherein A sealing strip is arranged at the connection between the box door and the glove box (1).

3. The toxic gas or easily gasifiable toxic liquid water content safety analysis device according to claim 1, wherein The waste liquid treatment tank (4) is of a closed structure, the top of the waste liquid treatment tank (4) is connected with a waste liquid tank pipeline (20), the other end of the waste liquid tank pipeline (20) is connected with a waste liquid outlet of the moisture meter (2), a pump is arranged on the waste liquid tank pipeline (20), and a treatment reagent is prearranged in the waste liquid treatment tank (4).

4. The toxic gas or easily gasifiable toxic liquid water content safety analysis device according to claim 1, wherein The nitrogen inlet pipeline (17) is provided with a dehydration protrusion (19), and a drying agent is arranged in the dehydration protrusion (19).

5. The toxic gas or easily gasifiable toxic liquid water content safety analysis device according to claim 1, wherein The glove box (1) and the outer shell (5) are both made of acrylic or tempered glass.

6. The toxic gas or easily gasifiable toxic liquid water content safety analysis device according to claim 1, wherein The toxic gas or the easily-gasified toxic liquid is one of hydrogen cyanide, hydrocyanic acid, hydrogen sulfide, chlorine and liquid chlorine.

Images