Test box for gas detection

Abstract

The utility model discloses a test box for gas detection, which comprises a body and a gas detection box, the body is provided with a gas inlet and a gas outlet, and the gas detection box is arranged outside the body and communicated with the body; the gas detection box comprises a box body, a gas detection module and a negative pressure flow guide assembly are arranged in the box body, the gas detection module comprises a temperature control assembly, a drainage assembly and a gas detection assembly, an air inlet valve and an air outlet valve are arranged on the box body, and the temperature control assembly is connected with an air outlet of the box body through the air inlet valve. The drainage assembly is arranged between the temperature control assembly and the gas detection assembly, the gas detection assembly is connected with the negative pressure flow guide assembly, the negative pressure flow guide assembly is connected with a gas inlet of the box body through a gas outlet valve, and the gas detection assembly and the negative pressure flow guide assembly form a gas flow loop on the body. The temperature of gas entering the gas detection module from the body is controlled through the temperature control assembly, and the negative pressure flow guide assembly generates negative pressure gravitation on the gas in the body to guide the gas to slowly flow into the gas detection module.

Description

Technical Field

[0001] This utility model belongs to the field of gas detection technology, specifically relating to a test chamber for gas detection. Background Technology

[0002] Gas detection chambers are used to detect gases in high or low temperature environments. Existing gas test chambers integrate gas detection modules, but these modules have limited tolerance to high or low temperatures, resulting in inaccurate or difficult detection of gases at higher or lower temperatures. Therefore, the gas needs to be pre-treated and temperature-controlled before testing. However, if the gas flow rate is too fast during gas treatment and temperature control, the temperature control effect will be poor, which will also lead to inaccurate test results. Existing test chambers are usually equipped with a vacuum pump to draw gas into the detection device. The gas flow rate is relatively fast, making it impossible to accurately control the temperature. Utility Model Content

[0003] The purpose of this invention is to provide a test chamber for gas detection. The test chamber body has multiple air inlets and outlets, and a gas detection chamber is connected between the air inlets and outlets. The gas detection chamber contains multiple corresponding gas detection modules, which are connected to a negative pressure guiding component. The gas detection modules and the negative pressure guiding component, along with the air inlets and outlets, form a gas flow loop. A temperature control component regulates the temperature of the gas entering the gas detection modules from the test chamber body, and the negative pressure guiding component generates a negative pressure attraction on the gas in the test chamber body, guiding the gas to slowly flow into the gas detection modules.

[0004] This utility model is achieved through the following technical solution:

[0005] A test chamber for gas detection includes a main body and a gas detection chamber. The main body has at least one air inlet and at least one air outlet. The gas detection chamber is located outside the main body and communicates with the air inlet and air outlet of the main body. The gas detection chamber includes a housing, in which a negative pressure guiding component and at least one set of gas detection modules are disposed. Each gas detection module includes a temperature control component, a drainage component, and a gas detection component. The housing has an inlet valve and an outlet valve. The temperature control component is connected to the outlet of the housing through the inlet valve. The drainage component is disposed between the temperature control component and the gas detection component. The gas detection component is connected to the negative pressure guiding component, which is connected to the air inlet of the housing through the outlet valve. The negative pressure guiding component is used to generate negative pressure to cause the gas in the main body to flow in the gas detection chamber.

[0006] Furthermore, the temperature control component includes an air cooler and a heating belt, wherein the air cooler is used to cool the gas in the body, and the heating belt is used to heat the gas in the body.

[0007] Furthermore, the drainage assembly includes a gas source processor, an S-shaped bend, a first one-way throttle valve, and a drain valve; the gas source processor is disposed between the temperature control assembly and the gas detection assembly, the S-shaped bend is disposed below the gas source processor, the first one-way throttle valve is disposed between the drain valve and the S-shaped bend, and the drain valve is connected to an external water tank.

[0008] Furthermore, the gas detection assembly includes a flow meter, a hydrogen detector, and a second one-way throttle valve; the hydrogen detector is disposed between the flow meter and the second one-way throttle valve, and the second one-way throttle valve is connected to the negative pressure guiding assembly.

[0009] Furthermore, the negative pressure guiding assembly includes a negative pressure generator, a third one-way throttle valve, and an air supply pump. The second one-way throttle valve is connected to the negative pressure generator, and the third one-way throttle valve is disposed between the negative pressure generator and the air supply pump. The air supply pump supplies air to the negative pressure generator to generate negative pressure and draw out the gas from the main body. The other end of the negative pressure generator is connected to an outlet valve.

[0010] Furthermore, a micro differential pressure switch is provided between the negative pressure generator and the air outlet valve.

[0011] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0012] In this invention, multiple air inlets and outlets are provided on the test chamber body, and a gas detection box is connected between the air inlets and outlets. Multiple corresponding gas detection modules are provided in the gas detection box. The gas detection modules are connected to the negative pressure guiding component. The gas detection modules and the negative pressure guiding component are connected to the air inlets and outlets to form a gas flow loop. The temperature of the gas entering the gas detection module from the body is regulated by the temperature control component. The negative pressure guiding component generates a negative pressure attraction on the gas in the body, guiding the gas to slowly flow into the gas detection module. The structure and principle are simple. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the electrical layout of the test chamber for gas detection according to this utility model.

[0015] The components are: 1-body, 11-outlet, 12-inlet, 2-box, 21-inlet valve, 22-outlet valve, 3-air cooler, 4-heating belt, 5-gas source processor, 6-S-shaped bend, 7-flow meter, 8-first one-way throttle valve, 9-hydrogen detector, 10-second one-way throttle valve, 20-negative pressure generator, 30-third one-way throttle valve, 40-gas supply pump, 50-micro differential pressure switch, 60-drain valve. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. Example 1:

[0017] A test chamber for gas detection, such as Figure 1 As shown, the device includes a main body 1 and a gas detection chamber. The main body 1 has multiple air outlets 11 and at least one air inlet 12. The gas detection chamber is located outside the main body 1 and is connected to the air inlet 12 and air outlets 11 of the main body 1. The gas detection chamber includes a housing 2, which contains multiple sets of gas detection modules and a set of negative pressure guiding components. Each set of gas detection modules is connected in parallel and is connected to the negative pressure guiding component. Each gas detection module includes a temperature control component, a drainage component, and a gas detection component. The housing 2 is equipped with an air inlet valve 21 and an air outlet valve 22. The temperature control component is connected to the air outlet 11 of the housing 2 through the air inlet valve 21. The drainage component is located between the temperature control component and the gas detection component. The gas detection component is connected to the negative pressure guiding component, which is connected to the air inlet 12 of the housing 2 through the air outlet valve 22. The gas detection modules and the negative pressure guiding component work together to form a gas flow loop outside the main body 1, allowing the gas in the main body 1 to flow through the gas inlet 12 of the gas detection modules. The pressure is kept consistent. The negative pressure guiding component is used to generate negative pressure to make the gas in the main body 1 flow in the gas detection chamber. The temperature control component includes an air cooler 3 and a heating belt 4. The air cooler 3 is used to cool the gas in the main body 1, and the heating belt 4 is used to heat the gas in the main body 1. The air cooler 3 and the heating belt 4 are used to regulate the temperature of the gas entering the gas detection module to avoid the gas temperature being too high or too low and affecting the detection results. The drainage component includes a gas source processor 5, an S-shaped bend 6, a first one-way throttle valve 8, and a drain valve 60. The gas source processor 5 is located between the temperature control component and the gas detection component. The S-shaped bend 6 is located below the gas source processor 5. The first one-way throttle valve 8 is located between the drain valve 60 and the S-shaped bend 6. The drain valve 60 is connected to an external water tank. The gas source processor 5 is used to filter the gas and separate the gas and water in the gas, so that the water in the gas is stored in the S-shaped bend 6. When there is too much water, it will flow into the external water tank through the first one-way throttle valve 8. Example 2:

[0018] This embodiment, based on the above embodiment, further defines a gas detection component and a negative pressure guiding component. The gas detection component includes a flow meter 7, a hydrogen detector 9, and a second one-way throttle valve 10. The hydrogen detector 9 is positioned between the flow meter 7 and the second one-way throttle valve 10. The second one-way throttle valve 10 is connected to the negative pressure guiding component. The flow meter 7 is used to count the gas flow rate entering the gas detection component. After the gas is detected by the hydrogen detector 9, it flows into the negative pressure guiding component through the second one-way throttle valve 10. The negative pressure guiding component includes a negative pressure generator 20, a third one-way throttle valve 30, and a gas supply pump 40. The second one-way throttle valve 10 is connected to the negative pressure generator 20, and the third one-way throttle valve 30 is connected to the negative pressure generator 20. A one-way throttle valve 30 is positioned between the negative pressure generator 20 and the air supply pump 40. The air supply pump 40 supplies air to the negative pressure generator 20, causing it to generate negative pressure and draw the gas out of the main body 1. The other end of the negative pressure generator 20 is connected to the outlet valve 22. A micro differential pressure switch 50 is installed between the negative pressure generator 20 and the outlet valve 22. The working air pump supplies air to the negative pressure generator 20, causing it to generate negative pressure, thereby guiding the gas in the main body 1 and the gas detection assembly to flow continuously and evenly towards the negative pressure generator 20. After entering the negative pressure generator 20, the gas re-enters the main body 1 through the outlet valve 22, keeping the pressure in the main body 1 consistent with that in the gas detection module. The micro differential pressure switch 50 is used to prevent the negative pressure generator 20 from overloading. Other parts of this embodiment are the same as those in the above embodiment and will not be described again here.

[0019] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Furthermore, the use of terms such as "horizontal" or "vertical" in the description of this utility model does not imply that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A test chamber for gas detection, characterized in that, The device includes a main body and a gas detection chamber. The main body has at least one air inlet and at least one air outlet. The gas detection chamber is located outside the main body and communicates with the air inlet and air outlet of the main body. The gas detection chamber includes a housing, in which a negative pressure guiding component and at least one set of gas detection modules are installed. Each gas detection module includes a temperature control component, a drainage component, and a gas detection component. The housing has an inlet valve and an outlet valve. The temperature control component is connected to the outlet of the housing through the inlet valve. The drainage component is located between the temperature control component and the gas detection component. The gas detection component is connected to the negative pressure guiding component, which is connected to the air inlet of the housing through the outlet valve. The negative pressure guiding component is used to generate negative pressure to allow gas in the main body to flow in the gas detection chamber.

2. The test chamber for gas detection of claim 1, wherein, The temperature control component includes an air cooler and a heating belt. The air cooler is used to cool the gas in the body, and the heating belt is used to heat the gas in the body.

3. The test chamber for gas detection of claim 1, wherein, The drainage assembly includes a gas source processor, an S-shaped bend, a first one-way throttle valve, and a drain valve; the gas source processor is located between the temperature control assembly and the gas detection assembly, the S-shaped bend is located below the gas source processor, the first one-way throttle valve is located between the drain valve and the S-shaped bend, and the drain valve is connected to an external water tank.

4. The test chamber for gas detection of claim 1, wherein, The gas detection assembly includes a flow meter, a hydrogen detector, and a second one-way throttle valve; the hydrogen detector is disposed between the flow meter and the second one-way throttle valve, and the second one-way throttle valve is connected to the negative pressure guiding assembly.

5. The test chamber for gas detection of claim 4, wherein, The negative pressure guiding assembly includes a negative pressure generator, a third one-way throttle valve, and an air supply pump. The second one-way throttle valve is connected to the negative pressure generator. The third one-way throttle valve is located between the negative pressure generator and the air supply pump. The air supply pump supplies air to the negative pressure generator to generate negative pressure and draw out the gas from the main body. The other end of the negative pressure generator is connected to an outlet valve.

6. The test chamber for gas detection of claim 5, wherein, A differential pressure switch is installed between the negative pressure generator and the air outlet valve.

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