Dynamic generation device for special gas

Abstract

The utility model provides a special gas dynamic generating device which is characterized by comprising a first shell which is arranged on a base and is internally provided with a first cavity, the top of the first shell is provided with a first cavity cover, and the outside of the first shell is provided with a heating assembly, and a second shell which is arranged in the first cavity and is internally provided with a second cavity and the top of the second shell is provided with a second gas outlet nozzle, the third shell is arranged in the second cavity and internally provided with a third cavity, the top of the third shell is provided with a third air outlet nozzle, the inner container is arranged in the third cavity and internally provided with special gas which is in a liquid state at normal temperature, the top of the inner container is open, the third air outlet nozzle is communicated with the second air outlet nozzle, and the second air outlet nozzle penetrates through the through hole of the first cavity cover, extends outwards and then is connected with the two-way valve. And the two-way valve is connected with an air supply pipe. The special gas alarm device can be adjusted according to the concentration requirement of the special gas, the sensitivity of the special gas alarm device is effectively detected, and the special gas alarm device monitors whether the special gas exists or not in a special environment so as to guarantee the environmental safety.

Description

Technical Field

[0001] The utility model relates to a gas generating device, in particular to a special gas dynamic generating device, which is used to simulate a special gas with a certain concentration in the air to detect whether a special gas alarm device can alarm the presence of the special gas. It belongs to the technical field of special gas detection. Background Art

[0002] In recent years, with the rapid development and technological update of chemical reconnaissance and early warning technology, the index requirements for alarm devices monitoring special gases have become increasingly high. In particular, it is required that special gas alarms can give an alarm at extremely low concentrations of special gases. Due to the particularity of special gases, there are very few adjustable and low-concentration special gas generating equipments available on the market. Currently, the main methods for preparing standard gases at home and abroad are the following two: one is the static gas distribution method, and the other is the dynamic gas distribution method. The static gas distribution method can be further divided into: gas cylinder gas distribution method, syringe gas distribution method, plastic bag gas distribution method, high-pressure steel cylinder gas distribution method, etc. according to different tools used for gas distribution. The dynamic gas 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 method in solution, gas phase titration method, microinjection method, chemical reaction method, standard gas dilution ratio method, and so on. Due to the particularity and safety of special gases, it is difficult to complete the dynamic generation of special gases using existing technologies, and thus it is difficult to monitor the sensitivity of special gas alarm devices, making it difficult to detect special gases at lower concentrations in actual applications, which is not conducive to the normal use of special gas alarm devices. Therefore, the existing technologies must be improved. Summary of the Invention

[0003] To ensure the normal use of special gas alarm devices and solve the problem of difficult generation of low-concentration special gases, the utility model provides a special gas dynamic generating device with high safety, operability, and adjustable concentration, providing technical support for special gas alarm devices to give an alarm at extremely low gas concentrations.

[0004] The present utility model is achieved through the following technical solutions: A special gas dynamic generation device includes a first housing placed on a base, which has a first chamber inside, a first chamber cover on its top, and a heating component outside. A second housing is disposed in the first chamber, which has a second chamber inside and a second air outlet on its top. A third housing is disposed in the second chamber, which has a third chamber inside and a third air outlet on its top. An inner container is disposed in the third chamber, which contains a special gas that is liquid at normal temperature and has an open top. The third air outlet is communicated with the second air outlet. The second air outlet extends outward through the through hole of the first chamber cover and is connected to a two-way valve. The two-way valve is connected to a supply pipe, so that the liquid special gas in the inner container is heated by the heating component, and through heat conduction of the third, second, second housing, and inner container, it is changed into gaseous special gas and sent out through the third and second air outlets to complete the generation of the special gas.

[0005] The first chamber cover is movably covered on the top of the first housing, and a sealing ring is provided between the first chamber cover and the first housing to facilitate the installation and removal of the first chamber cover, and at the same time ensure the sealing performance after covering.

[0006] The heating component outside the first housing includes a heating element and a fan disposed outside the heating element to directly heat the first housing through the heating element and the fan.

[0007] The second housing includes an upper and a lower housing. The top of the upper housing and the second air outlet are integrally formed. An air passage is provided in the middle of the second air outlet, and both the upper and lower ends of the air passage are open. A protrusion is provided at the inner bottom of the lower housing, and the protrusion is matched with the groove at the bottom of the third housing, so that the bottom of the third housing can be stably placed in the second housing through the protrusion and the groove, and at the same time it is convenient for the second housing to enter and exit the first chamber of the first housing.

[0008] The lower end of the two-way valve is connected to the second air outlet, and a three-way joint is inserted at the upper end of the two-way valve. The other two through holes of the three-way joint are respectively connected to the supply pipe, and a hose is provided on the supply pipe.

[0009] At least two O-ring seals are provided between the periphery of the second air outlet and the through hole at the center of the first chamber cover to reinforce the seal.

[0010] The third housing is composed of a housing seat at the lower part and a housing cover at the upper part. The third air outlet is provided on the housing cover, and the third air outlet is communicated with the air passage in the middle of the second air outlet, so as to facilitate the third housing to enter and exit the second chamber of the second housing, and at the same time facilitate the inner container and the housing cover to enter and exit the third chamber of the third housing.

[0011] Compared with the prior art, the present utility model has the following advantages:

[0012] 1. It has high safety and operability, especially when loading and discharging special gas and making it dynamically generated, it has high safety and operational usability;

[0013] 2. It can be adjusted according to the required concentration of special gas. In particular, the concentration of the generated special gas can be adjusted to a lower range to effectively detect the sensitivity of the special gas alarm device, enabling the special gas alarm device to monitor whether there is special gas in a special environment to ensure environmental safety;

[0014] 3. Adopt modular design for easy installation, disassembly and maintenance;

[0015] 5. The setting of multiple shells ensures high sealing performance and facilitates transfer and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view of the present utility model;

[0017] Figure 2 is the top view of the present utility model;

[0018] Figure 3 is Figure 2 the A - A cross - sectional view of DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solution of the special gas dynamic generation device will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. The embodiments described below are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments described below of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present utility model.

[0020] Meanwhile, in order to keep the following description of the embodiments of the present utility model clear and concise, the detailed description of known functions and known components is omitted.

[0021] As shown in the drawings, the special gas generation device provided by the present utility model includes a first shell 1 placed on a base 17, which has a first cavity inside, a first cavity cover 7 on its top, and a heating component outside; a second shell 2 disposed in the first cavity, which has a second cavity inside and a second air outlet nozzle 6 on its top; a third shell 3 disposed in the second cavity, which has a third cavity inside and a third air outlet nozzle 5 on its top; an inner container 4 disposed in the third cavity, which contains a special gas 16 in a liquid state at normal temperature and has an open top. The third air outlet nozzle 5 is communicated with the second air outlet nozzle 6. The second air outlet nozzle 6 extends out through the through - hole of the first cavity cover 7 and is connected to a two - way valve 9, and the two - way valve 9 is connected to a supply pipe;

[0022] The first cavity cover 7 is movably covered on the top of the first shell 1, and a sealing ring 12 is provided between the first cavity cover 7 and the first shell 1 to facilitate the installation and removal of the first cavity cover 7 and ensure the sealing performance after covering;

[0023] The heating component outside the first housing 1 includes a heating element 14 and a fan 15 arranged outside the heating element 14, so as to directly heat the first housing 1 through the heating element 14 and the fan 15;

[0024] The second housing 2 includes an upper housing and a lower housing. The top of the upper housing and the second air outlet 6 are integrated. An air passage is provided in the middle of the second air outlet 6, and both the upper and lower ends of the air passage are open. A protrusion is provided at the inner bottom of the lower housing, and the protrusion is matched with the groove at the bottom of the third housing 3, so that the bottom of the third housing 3 can be stably placed in the second housing 2 through the protrusion and the groove, and at the same time, it is convenient for the second housing 2 to enter and exit the first cavity of the first housing 1;

[0025] The lower end of the two-way valve 9 is connected to the second air outlet 6, and a three-way joint 11 is inserted into the upper end of the two-way valve 9. The other two through holes of the three-way joint 11 are respectively connected to the air supply pipe 10, and a hose is provided on the air supply pipe 10;

[0026] At least two O-ring seals 13 are provided between the periphery of the second air outlet 6 and the through hole at the center of the first cavity cover 7;

[0027] The third housing 3 is composed of a housing seat at the lower part and a housing cover at the upper part. A third air outlet 5 is provided on the housing cover, and the third air outlet 5 is communicated with the air passage in the middle of the second air outlet 6, so as to facilitate the third housing 3 to enter and exit the second cavity of the second housing 2, and at the same time, it is convenient for the inner container 4 and the housing cover to enter and exit the third cavity of the third housing 3;

[0028] When the special gas generating device of the present utility model is in use, it is energized to raise the temperature, so that the heat energy is transmitted to the first housing 1, the air in the first cavity is heated and raised in temperature, and then transmitted to the second housing 2, the air in the second cavity is heated and raised in temperature, and then transmitted to the third housing 3, and then transmitted to the inner container 4, so that the special gas changes from solid state to gaseous state, and enters the air passage in the middle of the second air outlet 6 through the third air outlet 5. The switch of the two-way valve 9 is opened, and the vaporized special gas reaches the three-way joint 11. At this time, dry and clean air is sent through the air supply pipe 10, so that the vaporized special gas is driven by the air to flow out of the three-way joint 11 and the supply pipe 10, realizing the vaporization of the special gas (normal temperature liquid state). At the same time, its concentration is adjusted in a timely manner according to the needs through the air flow rate and the opening degree of the two-way valve 9, so as to prepare different concentration ranges of special gas as required, and meet the sensitivity detection requirements of the special gas alarm device.

[0029] The above is only one embodiment of the present utility model, and it is not intended to limit the protection scope of the present utility model. For those skilled in the art, any modifications, equivalent replacements, etc. made within the structure of the present utility model all belong to the protection scope of the present utility model.

Claims

1. A special gas dynamic generating device, characterized in that It includes a first shell placed on a base, with a first cavity inside, a first cavity cover on the top, and a heating component 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, which contains 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, and the two-way valve is connected to an air supply pipe.

2. The special gas dynamic generating device according to claim 1, characterized in that The first cavity cover is movably covered on the top of the first shell, and a sealing ring is arranged between the first cavity cover and the first shell.

3. The special gas dynamic generating device according to claim 1, characterized in that The heating assembly outside the first shell includes a heating element and a fan arranged outside the heating element.

4. The special gas dynamic generating device according to claim 1, characterized in that The second shell comprises an upper shell and a lower shell. The top of the upper shell is integrated with the second air outlet nozzle. An airway is arranged in the middle of the second air outlet nozzle. The upper and lower ends of the airway are open. A protrusion is arranged at the bottom of the lower shell, which is matched with a groove at the bottom of the third shell.

5. The special gas dynamic generating device according to claim 1, characterized in that The lower end of the two-way valve is connected to the second air outlet nozzle, and a three-way is inserted into the upper end of the two-way valve. The other two through holes of the three-way are respectively connected to the air supply pipe, and the air supply pipe is provided with a hose.

6. The special gas dynamic generating device according to claim 1, characterized in that At least two O-type sealing rings are arranged between the periphery of the second air outlet nozzle and the through hole at the center of the first cavity cover.

7. The special gas dynamic generating device according to claim 1, characterized in that The third shell body is composed of a shell seat at the lower part and a shell cover at the upper part. The shell cover is provided with a third air outlet nozzle, and the third air outlet nozzle is communicated with the airway in the middle part of the second air outlet nozzle.

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