Special gas generating device

Abstract

The utility model provides a special gas generating device. The special gas generating device is characterized by comprising a special gas generating assembly, an air processing assembly and a gas mixing assembly, the special gas generation assembly, the air treatment assembly and the gas mixing assembly are arranged in the box body, and the box body is arranged on the moving trolley. The device has high safety and operability, and particularly has high safety and operational usability when special gas is filled and discharged and the special gas is dynamically generated; the special gas alarm device has the advantages that the special gas alarm device can be adjusted according to the required concentration requirement of the special gas, and particularly the concentration of the generated special gas can be adjusted to a lower range, so that the sensitivity of the special gas alarm device can be effectively detected, and the special gas alarm device can monitor whether the special gas exists in a special environment so as to guarantee the environmental safety; the special gas is uniformly mixed in concentration and stably output, so that the sensitivity of the alarm can be effectively detected; the modular design is adopted, so that mounting, dismounting and maintenance are facilitated; due to the arrangement of the multiple shells, high sealing performance is ensured, and transfer and transportation are convenient.

Description

Technical Field

[0001] The utility model provides a gas, especially a special gas generating device, which is used to detect the sensitivity of a special gas alarm, that is, to detect whether it can sound an alarm under extremely low special gas concentration, and belongs to the technical field of special gas detection. Background Art

[0002] In recent years, with the rapid development and technological updates of chemical reconnaissance and early warning technology, the requirements for monitoring special gas alarms have become increasingly stringent, with a particular requirement that special gas alarms can sound alarms even at extremely low concentrations of special gases. Due to the special nature of special gases, there are very few adjustable, low-concentration special gas generation equipment on the market. Currently, there are two main methods for standard gas distribution at home and abroad: static distribution and dynamic distribution. Static distribution methods are further divided into gas cylinder distribution, syringe distribution, plastic bag distribution, high-pressure cylinder distribution, etc., depending on the tools used for distribution. Dynamic distribution methods include: permeation tube generation method, gas permeation bottle generation method, liquid permeation method, negative pressure injection method, electrolysis method, capillary diffusion method, diffusion in solution method, gas phase titration method, microinjection method, chemical reaction method, standard gas dilution and proportioning method, etc. Due to the unique characteristics and safety of specialty gases, existing technologies are difficult to dynamically detect their generation, making it difficult to monitor the sensitivity of specialty gas alarms. This makes it difficult to detect even low concentrations of specialty gases in practical applications, hindering the proper use of specialty gas alarms. Furthermore, most commercially available devices for uniformly mixing and stably outputting specialty gases suffer from poor mixing uniformity, low safety, and inconvenient operation. Furthermore, they are unable to output the desired concentration, especially at lower concentrations. This creates difficulties in detecting the sensitivity of specialty gas alarms. Therefore, improvements to existing technologies are necessary. Summary of the Invention

[0003] In order to solve the problems of difficulty in generating low-concentration special gases, as well as poor mixing uniformity, low safety, and inconvenient operation in special gas mixing devices, the utility model provides a special gas generating device with high safety, operability, and adjustable concentration, and provides technical support for detecting whether the special gas alarm can also sound an alarm at extremely low special gas concentrations.

[0004] The utility model is completed through the following technical solutions: a special gas generating device, characterized in that it includes a special gas generating component, an air treatment component and a gas mixing component, so that the liquid special gas is converted into a gaseous state through the special gas generating component, and the air is filtered and dried by the air treatment component, and then the special gas is mixed with the air through the gas mixing component to form a gas that meets the concentration requirements, so as to be used for detection by the special gas alarm to verify whether the special gas alarm is working normally.

[0005] The special gas generating assembly, air processing assembly and gas mixing assembly are arranged in a box, and the box is placed on a mobile trolley, wherein:

[0006] The mobile cart is equipped with batteries, compressors, fans, and control equipment;

[0007] The box body is provided with a display screen, control buttons, and a sampling port. An insulation box is provided inside the box body. The special gas generating assembly and the gas mixing assembly are arranged in the insulation box so as to ensure that the temperature requirements of the special gas are met when it is gasified and mixed with the air.

[0008] The special gas generating assembly includes: a first shell placed on a base with a first cavity inside, a first cavity cover on the top, and a heating assembly on the outside; a second shell arranged in the first cavity with a second cavity inside and a second air outlet nozzle on the top; a third shell arranged in the second cavity with a third cavity inside and a third air outlet nozzle on the top; an inner liner arranged in the third cavity containing a special gas that is liquid at room temperature and has an open top; the third air outlet nozzle is connected to the second air outlet nozzle; the second air outlet nozzle extends outward through the through hole of the first cavity cover and is connected to a two-way valve; the two-way valve is connected to the first air supply pipe, so that the liquid special gas in the inner liner is heated by heat conduction through the third, second, and third shells and the inner liner under the action of the heating assembly to become a gaseous special gas, and then is sent out through the third and second air outlet nozzles to complete the generation of the special gas.

[0009] The special gas generating assembly:

[0010] The first cavity cover is movable on the top of the first shell;

[0011] The second housing comprises an upper housing and a lower housing. The top of the upper housing is integrally formed with the second air outlet nozzle. An air passage is provided in the middle of the second air outlet nozzle, and both the upper and lower ends of the air passage are open. A protrusion is provided on the bottom of the lower housing, and the protrusion mates with a groove on the bottom of the third housing. The protrusion and the groove allow the bottom of the third housing to be stably placed in the second housing, while facilitating the second housing to enter and exit the first cavity of the first housing.

[0012] The third shell is composed of a lower shell base and an upper shell cover. The shell cover is provided with a third air outlet nozzle, which is connected to the air channel in the middle of the second air outlet nozzle to facilitate the third shell to enter and exit the second cavity of the second shell, and at the same time facilitate the inner tank and shell cover to enter and exit the third cavity of the third shell.

[0013] The special gas generating assembly:

[0014] A sealing ring is provided between the first cavity cover and the first housing to facilitate installation and removal of the first cavity cover and ensure sealing performance after the cover is closed;

[0015] At least two O-rings are provided between the periphery of the second air outlet nozzle and the through hole at the center of the first cavity cover to enhance the seal;

[0016] The lower end of the two-way valve is connected to the second air outlet nozzle, and a tee is inserted into the upper end of the two-way valve. The other two through holes of the tee are respectively connected to the first air supply pipe and the second air supply pipe. The first and second air supply pipes are configured as hoses.

[0017] The heating component outside the first shell of the special gas generating component includes a heating element and a fan arranged outside the heating element, so that the first shell is directly heated by the heating element and the fan.

[0018] The gas mixing component includes: a shell with a mixing chamber provided therein, an air inlet provided at one end of the shell, an exhaust port provided at the other end, a large inner diameter in the middle of the mixing chamber, and inner diameters at both ends gradually narrowing toward the air inlet and the exhaust port, a gas primary mixing component provided at the air inlet, a filter component provided at the exhaust port, and a pressure monitoring port and a sampling port connected to the mixing chamber respectively provided on the shell, so that different gases can be preliminarily mixed through the gas primary mixing component and then enter the mixing chamber for final mixing. Since the inner diameter of one end of the mixing chamber connected to the air inlet gradually increases, the gases can be fully mixed under the action of diffusion. When the gas mixture reaches the required concentration, the mixed gas can be taken out through the sampling port for sensitivity detection of the special gas alarm. When the gas mixture does not reach the required concentration, or the mixed gas is not used, it is filtered through the filter component and then emptied.

[0019] The shell of the gas mixing assembly is set as a cylindrical bottle body, the air inlet is set at the front end of the cylindrical bottle body, the exhaust port is set at the rear end of the cylindrical bottle body, the pressure monitoring port is set on the side wall of one side of the cylindrical bottle body, and the sampling port is set on the side wall of the other side of the cylindrical bottle body, so as to ensure the safety of gas mixing through the cylindrical bottle body.

[0020] The gas mixing assembly:

[0021] The gas primary mixing assembly includes a housing, a mixing tube axially arranged in the housing, the inner end of the mixing tube communicating with the air inlet at the front end of the housing, the outer end of the mixing tube communicating with a first quick connector arranged at the outer end of the housing, a second quick connector provided on the side of the housing, a connector provided at the inner end of the housing maintaining a gap with the housing air inlet, the housing air inlet communicating with the second quick connector through the gap, the first quick connector connected to the second air supply pipe, and the second quick connector connected to the air handling assembly via a connecting pipe, so that the special gas is fed into the air inlet through the mixing tube, and then air is fed into the air inlet through the second quick connector, so that the two gases are preliminarily mixed in the air inlet and then enter the mixing chamber of the housing for further full mixing;

[0022] The filter assembly includes a filter tank with filter material therein, the input end of the filter tank is connected to the exhaust port of the shell, and the output end is set to be open, so that the gas that does not meet the concentration requirements can be filtered through the filter tank, so that the gas meets the emission requirements;

[0023] The pressure monitoring port is connected to an external pressure monitoring device to monitor the pressure inside the shell.

[0024] The air treatment assembly includes multiple drying canister groups arranged on a base, each drying canister group consisting of multiple drying canisters connected end to end, wherein the front input end of the drying canister at the head of the drying canister group is connected to the output end of the air compressor via a connecting pipe, the rear output end of the drying canister at the tail end is connected to the input end of the filter, the output end of the filter is connected to the input end of the flow meter, or is connected to the second quick connector via a connecting pipe, and the output end of the flow meter is connected to the input end of the first air supply pipe, so that the treated dry and clean air can be sent into the special gas generation assembly through the air treatment assembly for use in special gas gasification, or the treated air can be sent into the gas mixing assembly for special gas mixing and concentration adjustment.

[0025] Compared with the prior art, the utility model has the following advantages:

[0026] 1. It has high safety and operability, especially when loading and releasing special gases and allowing them to occur dynamically;

[0027] 2. It can be adjusted according to the required concentration of special gases. In particular, the concentration of special gases can be adjusted to a lower range to effectively detect the sensitivity of the special gas alarm device, allowing the special gas alarm device to monitor the presence of special gases in special environments to ensure environmental safety;

[0028] 3. The concentration of special gases is evenly mixed and output stably, which can effectively detect the sensitivity of the alarm;

[0029] 4. Modular design is adopted to facilitate installation, disassembly and maintenance;

[0030] 5. The setting of multiple shells ensures high sealing performance and is convenient for transfer and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is the front view of the utility model;

[0032] Figure 2 This is a top view of the utility model;

[0033] Figure 3 This is a front view of the special gas generating assembly and gas mixing assembly of the present utility model;

[0034] Figure 4 for Figure 3 A top view of

[0035] Figure 5 This is a cross-sectional view of the special gas generating assembly of the present utility model;

[0036] Figure 6 This is a top cross-sectional view of the gas mixing assembly of the present invention;

[0037] Figure 7 This is a structural diagram of the air handling component of the present utility model. DETAILED DESCRIPTION

[0038] The following, in conjunction with the accompanying drawings of the embodiments of the present invention, clearly and completely illustrates the technical solution of the dynamic generator of special gases. The embodiments described below are only a portion of the embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments described below, all other embodiments derived by those skilled in the art without inventive effort are intended to fall within the scope of protection of the present invention.

[0039] At the same time, in order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0040] As shown in the accompanying drawings, the special gas generating device provided by the present invention includes a special gas generating assembly 7, an air treatment assembly 6, and a gas mixing assembly 8. The special gas generating assembly 7 converts the liquid special gas into a gaseous state. The air treatment assembly 6 filters, purifies, and dries the air. The gas mixing assembly 8 then mixes the special gas with the clean air to form a gas that meets the concentration requirements. This gas is then used for sensitivity testing of the special gas alarm to verify whether the special gas alarm can sound an alarm even at extremely low concentrations of the special gas.

[0041] The special gas generating assembly 7, the air treatment assembly 6 and the gas mixing assembly 8 are arranged in the box 2, and the box 2 is placed on the mobile vehicle 1, wherein:

[0042] The mobile trolley 1 is equipped with a battery, a compressor, a fan, and a control device;

[0043] The box body 2 is provided with a display screen 4, control buttons, and a sampling port 3. A heat preservation box 5 is provided inside the box body 2. The special gas generating assembly 7 and the gas mixing assembly 8 are arranged in the heat preservation box 5 so as to ensure that the temperature requirements of the special gas when it is gasified and mixed with air are met through the heat preservation box 5.

[0044] The special gas generating assembly 7 includes a first shell 71 placed on a base 717, having a first cavity therein, a first cavity cover 77 on the top, and a heating assembly on the outside thereof; a second shell 72 provided in the first cavity, having a second cavity therein and a second gas outlet nozzle 76 on the top; a third shell 73 provided in the second cavity, having a third cavity therein and a third gas outlet nozzle 75 on the top; an inner liner 74 provided in the third cavity, containing a special gas 716 that is liquid at room temperature and having an open top; the third gas outlet nozzle 75 is communicated with the second gas outlet nozzle 76; the second gas outlet nozzle 76 extends outward through the through hole of the first cavity cover 77 and is connected to a two-way valve 79; and the two-way valve 79 is connected to the first gas supply pipe 710.

[0045] The first cavity cover 77 is movably covered on the top of the first housing 71 and fixed by screws 78. A sealing ring 712 is provided between the first cavity cover 77 and the first housing 71 to facilitate installation and removal of the first cavity cover and ensure sealing performance after the cover is closed;

[0046] The heating assembly outside the first housing 71 includes a heating element 714 and a fan 715 disposed outside the heating element 714 so as to directly heat the first housing 71 through the heating element 714 and the fan 715;

[0047] The second housing 72 comprises an upper and a lower housing. The top of the upper housing is integrally formed with the second air outlet nozzle 76. An air passage is provided in the middle of the second air outlet nozzle 76, and both the upper and lower ends of the air passage are open. A protrusion is provided on the bottom of the lower housing, which mates with a groove at the bottom of the third housing 73. The protrusion and the groove ensure that the bottom of the third housing 73 is stably placed in the second housing 72, while facilitating the entry and exit of the second housing 72 into the first cavity of the first housing 71.

[0048] The lower end of the two-way valve 79 is connected to the second air outlet nozzle 76. The upper end of the two-way valve 79 is inserted with a tee 711. The other two through holes of the tee 711 are respectively connected to the first air supply pipe 710 and the second air supply pipe 816. The first and second air supply pipes 710 and 816 are configured as flexible pipes.

[0049] At least two O-rings 713 are provided between the periphery of the second air outlet nozzle 76 and the through hole at the center of the first cavity cover 77 to enhance the seal;

[0050] The third housing 73 is composed of a housing base at the bottom and a housing cover at the top. The housing cover is provided with a third air outlet nozzle 75, which is connected to the air passage in the middle of the second air outlet nozzle 76 to facilitate the entry and exit of the third housing 73 into the second cavity of the second housing 72, and to facilitate the entry and exit of the inner liner 74 and the housing cover into the third cavity of the third housing 73.

[0051] The gas mixing assembly 8 includes a housing 82 with a mixing chamber 88 therein. An air inlet 87 is provided at one end of the housing 82, and an air outlet 810 is provided at the other end. The mixing chamber 88 has a large inner diameter in the middle portion, and the inner diameters at both ends gradually decrease toward the air inlet 87 and the air outlet 810. A gas primary mixing assembly 81 is provided at the air inlet 87, and a filter assembly 84 is provided at the air outlet 810. The housing 82 is provided with a pressure monitoring port 89 and a sampling port 83 respectively connected to the mixing chamber 88. The sampling port 83 is connected to the detection port of the special gas alarm via a hose to provide special gas for detection.

[0052] The housing 82 is a cylindrical bottle, with an air inlet 87 at the front end of the cylindrical bottle, an air outlet 810 at the rear end of the cylindrical bottle, a pressure monitoring port 89 on the side wall of one side of the cylindrical bottle, and a sampling port 83 on the side wall of the other side of the cylindrical bottle, so as to ensure the safety of gas mixing through the cylindrical bottle;

[0053] The gas primary mixing assembly 81 includes a shell 85, a mixing tube 813 axially arranged in the shell 85, the inner end of the mixing tube 813 is connected to the air inlet 87 at the front end of the shell 82, and the outer end of the mixing tube 813 is connected to the first quick connector 812 provided at the outer end of the shell 85. A second quick connector 86 is provided on the side of the shell 85, and a connector 814 is provided at the inner end of the shell 85 to maintain a gap with the air inlet 87 of the shell 82. The air inlet 87 of the shell 82 is connected to the second quick connector 86 through the gap. The first quick connector 812 is connected to the second air supply pipe 816, and the second quick connector 86 is connected to the air treatment assembly 6 through a connecting pipe, so that the special gas is fed into the air inlet 87 through the mixing tube 813, and then the air is fed into the air inlet 87 through the second quick connector 86, so that the two gases are preliminarily mixed in the air inlet 87 and then enter the mixing chamber 88 of the shell 82 to be fully mixed again;

[0054] The filter assembly 84 includes a filter canister with a filter material 811 therein. The filter canister input end is connected to the exhaust port 810 of the housing 82, and the output end 815 is open so that the gas that does not meet the concentration requirements or the unused gas can be filtered through the filter canister to ensure that the gas meets the discharge requirements.

[0055] The pressure monitoring port 89 is connected to an external pressure monitoring device to monitor the internal pressure of the housing 82;

[0056] The air treatment assembly 6 includes: multiple drying tank groups 62 mounted on a base, each drying tank group 62 consisting of multiple drying tanks 63 connected end to end. The front input end 61 of the drying tank 63 at the head of the drying tank group 62 is connected to the output end of the air compressor via a connecting pipe, and the rear output end 64 of the drying tank 63 at the tail is connected to the input end of a filter 65. The output end of the filter 65 is connected to the input end of a flow meter 66 or to a second quick connector 86 via a connecting pipe. The output end of the flow meter 66 is connected to the input end of a first air supply pipe 710. This allows the treated dry and clean air to be delivered to the gas mixing assembly 8 through the air treatment assembly 6 and mixed with the special gas until the concentration of the special gas meets the detection requirements.

[0057] When the special gas generating assembly 7 of the present invention is used, it is powered on and heated, so that the heat energy is transferred to the first shell 71, so that the air in the first cavity is heated and heated, and then transferred to the second shell 72, so that the air in the second cavity is heated and heated, and then transferred to the third shell 73, and then transferred to the inner tank 74, so that the special gas changes from solid to gaseous state, and enters the air passage in the middle of the second gas outlet nozzle 76 through the third gas outlet nozzle 75. The switch of the two-way valve 79 is opened, and the gasified special gas reaches the three-way valve 711. At this time, dry and clean air is sent in through the first gas supply pipe 710, so that the gasified special gas is driven by the air to flow out of the three-way valve 711 and the first gas supply pipe 710, so as to realize the special gas (normal gas) At the same time, its concentration is adjusted in time according to needs through the air flow rate and the opening degree of the two-way valve 79. Then, the different gases are preliminarily mixed in the gas pre-mixing component 81, and then enter the mixing chamber 88 for final mixing. Since the inner diameter of one end of the mixing chamber 88 connected to the air inlet 87 gradually increases, the special gas and air can be fully mixed again under the action of diffusion. After the required special gas of different concentration ranges is deployed, it can be taken out through the sampling port 83 for the sensitivity detection of the special gas alarm. When the gas mixture does not reach the required concentration or the mixed gas is not used, it is filtered through the filter component 84 and then emptied.

[0058] The above is only one embodiment of the present invention and is not intended to limit the scope of protection of the present invention. For those skilled in the art, any modification, equivalent replacement, etc. made within the structure of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A special gas generating device, characterized in that It includes specialty gas generation components, air handling components, and gas mixing components; The special gas generating assembly, air processing assembly and gas mixing assembly are arranged in a box, and the box is placed on a mobile trolley, wherein: The mobile cart is equipped with batteries, compressors, fans, and control equipment; The box body is provided with a display screen, control buttons, and a sampling port. The box body is provided with an insulation box. The special gas generating component and the gas mixing component are arranged in the insulation box. The special gas generating assembly includes a first shell placed on a base with a first cavity inside, a first cavity cover on the top, and a heating assembly on the outside; a second shell arranged in the first cavity with a second cavity inside and a second air outlet nozzle on the top; a third shell arranged in the second cavity with a third cavity inside and a third air outlet nozzle on the top; an inner liner arranged in the third cavity containing a special gas that is liquid at room temperature and has an open top; the third air outlet is connected to the second air outlet; the second air outlet extends outward through the through hole of the first cavity cover and is connected to a two-way valve; and the two-way valve is connected to the first air supply pipe.

2. The special gas generating device according to claim 1, characterized in that The special gas generating assembly: The first cavity cover is movable on the top of the first shell; The second shell includes an upper shell and a lower shell. The top of the upper shell and the second air outlet nozzle are integrally formed. An air channel is provided in the middle of the second air outlet nozzle, and the upper and lower ends of the air channel are open. A protrusion is provided on the bottom of the lower shell, and the protrusion is matched with the groove at the bottom of the third shell. The third shell body is composed of a lower shell base and an upper shell cover. The shell cover is provided with a third air outlet nozzle, which is communicated with the air passage in the middle of the second air outlet nozzle.

3. The special gas generating device according to claim 2, characterized in that The special gas generating assembly: A sealing ring is provided between the first cavity cover and the first shell; At least two O-rings are provided between the periphery of the second air outlet nozzle and the through hole at the center of the first cavity cover; The lower end of the two-way valve is connected to the second air outlet nozzle, and a tee is inserted into the upper end of the two-way valve. The other two through holes of the tee are respectively connected to the first air supply pipe and the second air supply pipe. The first and second air supply pipes are configured as hoses.

4. The special gas generating device according to claim 3, characterized in that The heating component outside the first shell of the special gas generating component includes a heating element and a fan arranged outside the heating element.

5. The special gas generating device according to claim 1, characterized in that The gas mixing assembly includes: a shell with a mixing chamber therein, an air inlet at one end of the shell and an exhaust port at the other end, the middle part of the mixing chamber has a large inner diameter, and the inner diameters at both ends gradually decrease toward the air inlet and exhaust ports, a gas primary mixing assembly is provided at the air inlet, and a filter assembly is provided at the exhaust port, and a pressure monitoring port and a sampling port connected to the mixing chamber are respectively provided on the shell.

6. The special gas generating device according to claim 5, characterized in that The shell of the gas mixing assembly is set as a cylindrical bottle body, the air inlet is set at the front end of the cylindrical bottle body, the exhaust port is set at the rear end of the cylindrical bottle body, the pressure monitoring port is set on the side wall of one side of the cylindrical bottle body, and the sampling port is set on the side wall of the other side of the cylindrical bottle body.

7. The special gas generating device according to claim 5, characterized in that The gas mixing assembly: The gas primary mixing assembly includes a housing, a mixing tube axially arranged in the housing, the inner end of the mixing tube communicating with the air inlet at the front end of the housing, the outer end of the mixing tube communicating with a first quick connector provided at the outer end of the housing, a second quick connector provided on the side of the housing, a connector provided at the inner end of the housing maintaining a gap with the housing air inlet, the housing air inlet communicating with the second quick connector through the gap, the first quick connector connected to the second air supply pipe, and the second quick connector connected to the air handling assembly via a connecting pipe; The filter assembly includes a filter tank with filter material therein, the input end of the filter tank is connected to the exhaust port of the shell, and the output end is set to be open; The pressure monitoring port is connected to an external pressure monitoring device.

8. The special gas generating device according to claim 1, characterized in that The air treatment assembly includes multiple drying canister groups arranged on a base, each drying canister group consisting of multiple drying canisters connected end to end, wherein the front input end of the drying canister at the head of the drying canister group is connected to the output end of the air compressor through a connecting pipe, the rear output end of the drying canister at the tail end is connected to the input end of the filter, the output end of the filter is connected to the input end of the flow meter, or is connected to the second quick connector through a connecting pipe, and the output end of the flow meter is connected to the input end of the first air supply pipe.

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