CN115597795A - Buckle-on-hood leak detection device, method, and system for air-tight containers - Google Patents

Abstract

The invention discloses a buckle closure type leakage detection device, method and system for an inflatable sealed container. The device comprises: a base plate; the buckle cover is connected with the bottom plate in a sealing way and forms an accommodating cavity for accommodating the inflatable sealed container with the bottom plate; a carbon dioxide sensor is arranged in the accommodating cavity and is in communication connection with the upper computer; the gas in the gas-filled sealed container is a gas without carbon dioxide or a gas with the concentration of the carbon dioxide less than a set value; the gas in the accommodating cavity is the atmosphere in the current environment; the pressure of the gas in the gas-filled sealed container is larger than the atmospheric pressure in the containing cavity. According to the invention, the inflatable sealed container is placed in a specific space, and the change of the concentration of carbon dioxide in the space is detected by using the carbon dioxide sensor, so that whether the inflatable sealed container leaks or not can be judged, and the inflatable sealed container has the characteristics of simple structure, convenience in detection and the like.

Description

Buckle-on-hood leak detection device, method, and system for airtight sealed containers

technical field

The invention belongs to the technical field of leakage detection of inflatable airtight containers, and in particular relates to a buckle-type leakage detection device, method and system for inflatable airtight containers.

Background technique

In the atmosphere, leak detection is performed on a sealed container that has been filled with a gas that exceeds the ambient atmospheric pressure and does not contain carbon dioxide. Usually, the method of detecting the leaked gas content in the sealed container is used as a method to judge whether the sealed container is leaking. This method requires prior It is extremely inconvenient to know the type of gas filled in the sealed container and to use the corresponding gas composition sensor for testing.

Contents of the invention

In order to solve the deficiencies in the prior art, the present invention provides a buckle-type leak detection device, method and system for an inflatable airtight container. Only a carbon dioxide sensor is used, and the inflatable airtightness can be judged by detecting the concentration of carbon dioxide in a specific space. Whether the container leaks has the characteristics of simple structure and convenient detection.

In order to achieve the above object, the technical scheme adopted in the present invention is:

In the first aspect, there is provided a buckle-type leak detection device for an inflatable airtight container, comprising: a bottom plate; a buckle cover, which is sealingly connected with the bottom plate, and encloses an accommodating cavity for accommodating the inflatable airtight container with the bottom plate ; A carbon dioxide sensor is installed in the accommodating chamber, and the carbon dioxide sensor is communicated with the host computer; the gas in the inflatable airtight container is a gas that does not contain carbon dioxide or a gas whose concentration of carbon dioxide is less than a set value; the accommodating The gas in the cavity is the atmosphere in the current environment; the gas pressure in the air-tight container is greater than the atmospheric pressure in the containing cavity.

Further, the value range of the set value is 1%~3% of the concentration of carbon dioxide in the atmosphere.

In the second aspect, there is provided a buckle-type leakage detection method for an airtight container, using the buckle-type leakage detection device for an airtight container described in the first aspect, and the method includes: according to the design Collect and record the concentration of carbon dioxide in the holding chamber at regular time intervals; judge whether the inflatable airtight container leaks according to the change of the concentration of carbon dioxide in the holding chamber over time.

Further, judging whether the inflatable airtight container leaks according to the change of the concentration of carbon dioxide in the accommodating chamber over time, specifically: when the concentration of carbon dioxide in the accommodating chamber does not change with time, it is determined that the airtight airtight container has not leaked ; When the concentration of carbon dioxide in the holding chamber decreases with time, it is determined that the inflatable airtight container leaks.

Further, the greater the change rate of the decrease of the concentration of carbon dioxide in the accommodating chamber with time, the higher the leakage rate of the airtight container.

Furthermore, before starting the detection, the containing cavity is in an unsealed state, that is, the inside and outside of the containing cavity are communicated; after starting the detecting, the containing cavity is in a sealed state, that is, the gas in the containing cavity is no longer connected to the atmosphere outside the containing cavity.

In the third aspect, there is provided a buckle-type leakage detection system for inflatable airtight containers, including the buckle-type leakage detection device for inflatable airtight containers described in the first aspect, and also includes: a data acquisition module for The purpose is to collect and record the concentration of carbon dioxide in the storage chamber according to the set time interval; the leakage warning module is used to judge whether the inflatable airtight container leaks according to the change of the concentration of carbon dioxide in the storage chamber with time.

Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

(1) By placing the inflatable airtight container in a specific space and using a carbon dioxide sensor to detect the change of carbon dioxide concentration in the space, the present invention can judge whether the inflatable airtight container leaks, and has the characteristics of simple structure and convenient detection;

(2) The present invention does not need to consider what kind of gas is in the gas-filled sealed container (it only needs to know that the gas-filled sealed container does not contain carbon dioxide or the concentration of carbon dioxide is negligible compared to the concentration of carbon dioxide in the air), nor does it need Prepare the corresponding gas composition analysis sensor, only need to prepare the carbon dioxide sensor, which reduces the detection cost and improves the economic benefit.

Description of drawings

Fig. 1 is a schematic diagram of a buckle-type leak detection device for an inflatable airtight container provided by an embodiment of the present invention;

In the figure: 1. Bottom plate; 2. Buckle cover; 3. Carbon dioxide sensor; 4. Inflatable airtight container.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

Embodiment one:

As shown in FIG. 1 , a buckle-type leak detection device for an airtight container includes: a bottom plate 1 , a buckle 2 and a carbon dioxide sensor 3 .

The buckle cover 2 is sealed and connected with the base plate 1, and forms an accommodating cavity for accommodating the inflatable airtight container 4 with the base plate 1; a carbon dioxide sensor 3 is installed in the accommodating cavity, and the carbon dioxide sensor 3 communicates with the upper computer, and the upper computer is used for detecting carbon dioxide The data collected by the sensor 3 is stored, analyzed and processed; the gas in the inflatable airtight container 4 is a gas without carbon dioxide or a gas with a concentration of carbon dioxide lower than the set value; the gas in the accommodating chamber is the atmosphere in the current environment; The gas pressure in the container 4 is greater than the atmospheric pressure in the containing chamber.

The gas whose concentration of carbon dioxide is less than the set value means that the concentration of carbon dioxide in the inflatable sealed container is lower than a certain set value, and the range of the set value generally refers to 1%~3% of the concentration of carbon dioxide in the atmosphere.

In this embodiment, there is a detachable sealing connection between the button cover 2 and the bottom plate 1; The cover 2 is airtightly connected with the bottom plate 1; after the test is completed, the button cover 2 is separated from the bottom plate 1, and the inflatable airtight container 4 is taken away for the next test. Or there is a non-detachable sealed connection between the button cover 2 and the bottom plate 1; however, a channel is provided on the button cover 2 or the bottom plate 1 to allow the inflatable airtight container 4 to enter the accommodating chamber, and the channel can be sealed before the detection begins.

Embodiment two:

Based on the snap-on-cap leak detection device for an inflatable airtight container provided in Embodiment 1, this embodiment provides a snap-on leak detection method for an inflatable airtight container.

Step 1: Before starting the test, the storage chamber is in an unsealed state, and the inside and outside of the storage chamber are connected; cover the sealed container that has been filled with gas that exceeds the ambient atmospheric pressure and does not contain carbon dioxide (that is, put the inflatable sealed container into the storage chamber), The outside of the button cover is the atmosphere, and the inside of the button cover is an inflatable airtight container that has been filled with a gas that exceeds the ambient atmospheric pressure and does not contain carbon dioxide.

Step 2: After the detection is started, the chamber is in a sealed state, that is, the gas in the chamber is no longer connected to the atmosphere outside the chamber; the concentration of carbon dioxide in the chamber is collected and recorded according to the set time interval.

Step 3: According to the change of the concentration of carbon dioxide in the holding chamber over time, determine whether the inflatable airtight container leaks, specifically:

When the concentration of carbon dioxide in the holding chamber does not change with time, it is determined that the airtight airtight container has not leaked;

When the concentration of carbon dioxide in the accommodating chamber decreases with time, it is determined that the inflatable airtight container leaks; and the greater the rate of change of the concentration of carbon dioxide in the accommodating chamber decreases with time, the higher the leakage rate of the inflatable airtight container.

Normally, the content of carbon dioxide in the atmosphere is about 320-450ppm. When the gas in the inflatable airtight container does not contain carbon dioxide or the content of carbon dioxide is far lower than the content of carbon dioxide in the atmosphere (for example, the concentration of carbon dioxide in the inflatable airtight container is lower than 3% of the concentration of carbon dioxide in the atmosphere), use the present invention The method can accurately detect whether the airtight container leaks.

The invention overcomes the deficiency of the prior art that the gas component sensor in the air-tight container needs to be used to detect the leakage of the leaked component, and can use the most commonly used carbon dioxide gas component sensor in combination with the form of the buckle cover method, without affecting the sealing of the container. Under such circumstances, it is of great practical value to detect the leakage or sealing state of the airtight container filled with gas containing no carbon dioxide under the ambient atmospheric pressure.

Embodiment three:

Based on Embodiment 1 and Embodiment 2, this embodiment provides a buckle-type leak detection system for inflatable airtight containers, including a buckle-type leak detection device for inflatable airtight containers described in Embodiment 1, Also includes:

The data collection module is used to collect and record the concentration of carbon dioxide in the holding chamber according to the set time interval;

The leakage warning module is used for judging whether the inflatable airtight container leaks according to the change of the concentration of carbon dioxide in the holding chamber over time.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and modifications can also be made. It should also be regarded as the protection scope of the present invention.

Claims (7)

1. A buckle-cover leak detector device for a gas-filled sealed container, comprising:

a base plate (1);

the buckle cover (2) is connected with the bottom plate (1) in a sealing mode and encloses an accommodating cavity for accommodating the inflatable sealed container (4) with the bottom plate (1);

a carbon dioxide sensor (3) is installed in the accommodating cavity, and the carbon dioxide sensor (3) is in communication connection with an upper computer;

the gas in the inflatable sealed container (4) is a gas without carbon dioxide or a gas with the concentration of carbon dioxide less than a set value;

the gas in the accommodating cavity is the atmosphere in the current environment;

the gas pressure in the inflatable sealed container (4) is larger than the atmospheric pressure in the containing cavity.

2. The buckle closure type leak detection device for the inflatable sealed container according to claim 1, wherein the set value is in a range of 1% to 3% of the concentration of carbon dioxide in the atmosphere.

3. A buckle closure type leakage detection method for an inflatable sealed container, which is characterized in that the buckle closure type leakage detection device for the inflatable sealed container as claimed in any one of claims 1 to 2 is adopted, and the method comprises the following steps:

collecting and recording the concentration of carbon dioxide in the accommodating cavity according to a set time interval;

and judging whether the inflatable sealed container leaks or not according to the change of the concentration of the carbon dioxide in the accommodating cavity along with the time.

4. The buckle closure type leakage detection method for the inflatable sealed container according to claim 3, wherein the judgment of whether the inflatable sealed container leaks or not is made according to the change of the concentration of carbon dioxide in the accommodating cavity with time, specifically:

when the concentration of the carbon dioxide in the accommodating cavity does not change along with the change of time, judging that the inflatable sealed container does not leak;

when the concentration of carbon dioxide in the accommodating chamber decreases with time, it is determined that the air-tight container leaks.

5. The buckle closure type leak detection method for a gas-filled sealed container according to claim 4, wherein the larger the rate of change in decrease in the concentration of carbon dioxide in the containing chamber with time, the higher the leak rate of the gas-filled sealed container.

6. The buckle closure type leakage detecting method for an inflatable sealed container according to claim 3, wherein before the detection is started, the accommodating chamber is in a non-sealing state, i.e., the inside and the outside of the accommodating chamber are communicated; after the detection is started, the accommodating cavity is in a sealed state, namely, the gas in the accommodating cavity is not communicated with the atmosphere outside the accommodating cavity.

7. A buckle closure leakage detection system for an inflatable sealed container, comprising the buckle closure leakage detection device for an inflatable sealed container as claimed in any one of claims 1 to 2, further comprising:

the data acquisition module is used for acquiring and recording the concentration of the carbon dioxide in the accommodating cavity according to a set time interval;

and the leakage early warning module is used for judging whether the inflatable sealed container leaks or not according to the change of the concentration of the carbon dioxide in the accommodating cavity along with the time.

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