Gas detection device

Abstract

The utility model discloses a gas detection device which comprises a detection box, the detection box comprises a buffer chamber and a detection chamber, the buffer chamber and the detection chamber are separated through a filter, an inlet of the buffer chamber is communicated with a to-be-detected gas detection outlet, the buffer chamber is used for receiving to-be-detected gas, and the detection chamber is used for detecting the to-be-detected gas; the filter is used for filtering to-be-detected gas flowing to the detection chamber; the gas sensor is arranged in the detection chamber and is used for detecting the content of to-be-detected gas flowing into the detection chamber; the inlet of the exhaust conduit is communicated with the outlet of the detection chamber, and the outlet of the exhaust conduit is communicated with the atmospheric environment; and the alarm is in communication connection with the gas sensor. According to the device, the gas content can be accurately detected in a short detection time, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas detection technical field especially relates to a gas detection device. BACKGROUND

[0002] In the gas replacement and detection of equipment and facility inspection in the harmful gas equipment and facility overhaul stop and gas operation, the equipment and facility inspection needs to be carried out. The current main detection method is that the artificial hand-held portable alarm carries out gas detection analysis through the detection point. However, due to the characteristics that the on-site equipment and facility detection point is directly connected with the atmospheric environment, the detected gas is directly contacted with the atmospheric environment, a certain amount of mixed gas is formed in the detection part, thereby the detection value accuracy is influenced, and the method is also greatly influenced by the inspection methods of different personnel, such as: the detection results are different when the distance of the alarm from the inspection port is different and the contact time is different. Such detection method sometimes delays the detection time, reduces the work efficiency, and also wastes the replacement gas resources. UTILITARY MODEL CONTENT

[0003] The utility model discloses a gas detection device, can use shorter detection time to detect the gas content more accurately, better protection to the gas sensor in the detection process, improve the work efficiency and prolong the service life of the device.

[0004] In order to realize the above-mentioned purpose, the technical scheme provided by the utility model embodiment is as follows:

[0005] The utility model provides a kind of gas detection device, comprising: detection box is provided with buffer chamber and detection chamber, the buffer chamber is separated from the detection chamber by filter, the inlet of the buffer chamber is communicated with the outlet of the gas to be measured, the buffer chamber is used to receive the gas to be measured, the filter is used to filter the gas to be measured flowing to the detection chamber;Gas sensor is arranged in the detection chamber, for detecting the gas content of the gas to be measured flowing into the detection chamber;Exhaust duct, the inlet of the exhaust duct is communicated with the outlet of the detection chamber, and the outlet of the exhaust duct is communicated with atmospheric environment;Alarm is connected with the gas sensor.

[0006] Preferably, the filter is filter cotton.

[0007] Preferably, the alarm is an audible and visual alarm, which is arranged outside the detection box or in the detection chamber.

[0008] Preferably, the gas sensor further comprises a display screen for displaying the detected gas content, and the detection box is made of transparent material.

[0009] Preferably, the device further comprises a display screen disposed outside the detection box and in communication with the gas sensor, the display screen being configured to display the detected gas content.

[0010] Preferably, the detection chamber further comprises a first opening closed by a movable cover plate.

[0011] Preferably, the buffer chamber further comprises a second opening closed by a movable cover plate.

[0012] Preferably, the movable cover plate is a pull-out cover plate.

[0013] Preferably, the device further comprises a sampling conduit having an inlet in communication with the detection outlet of the gas to be detected and an outlet in communication with the inlet of the buffer chamber.

[0014] Preferably, the filter is disposed adjacent to the side of the inlet of the buffer chamber.

[0015] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0016] The gas detection device provided by the embodiments of the present application comprises a detection box, a buffer chamber and a detection chamber are disposed in the detection box, the buffer chamber and the detection chamber are separated by a filter, the gas to be detected first flows from the detection outlet to the buffer chamber, and then flows to the detection chamber after being filtered by the filter, a gas sensor disposed in the detection chamber detects the gas to be detected, the gas to be detected entering the detection chamber is discharged to the atmospheric environment through an exhaust conduit, and the gas sensor detects the gas concentration and alarms when the gas concentration exceeds the standard. The device can detect the gas to be detected in a relatively closed space, avoid mixing other gases during detection to affect the accuracy of detection, the gas to be detected entering the detection chamber is filtered gas, and interference of impurities such as water vapor on the detection of the gas sensor is also avoided, the detection process of the device is not affected by human factors, the buffer chamber can effectively protect the gas sensor, avoid the sensor probe from contacting impurities, prolong the service life of the sensor probe, realize accurate detection of the gas content in a short detection time, improve the work efficiency, and prolong the service life of the device. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0018] Figure 1 A structural schematic diagram of a gas detection device provided by the utility model embodiment.

[0019] Wherein, the reference signs are respectively:

[0020] The detection box 100; the buffer chamber 101; the detection chamber 102; the filter 103; the gas sensor 104; the exhaust guide pipe 105; the display screen 106; the first pull cover plate 107; the second pull cover plate 108; the sampling guide pipe 109. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0022] In the description of the present application, it should be further explained that, unless explicitly defined and limited, the terms "set", "connected" should be understood broadly, for example, "connected" can be direct connection or indirect connection through an intermediate medium, and can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] In this paper, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the sentence "including a…" does not exclude the existence of other identical elements in the process, method, article or equipment including the element.

[0024] It should be noted that the gas detection device provided by the present application can be applied to the gas replacement detection in the harmful gas equipment and facility maintenance, gas stop and sending operation of steel smelting enterprises.

[0025] As Figure 1As shown, the gas detection device provided by the embodiment of the utility model, including: detection box 100 is provided with buffer chamber 101 and detection chamber 102, buffer chamber 101 and detection chamber 102 are separated by filter 103, the inlet of buffer chamber 101 is communicated with the detection outlet of the gas to be measured, buffer chamber 101 is used for receiving the gas to be measured, filter 103 is used for filtering the gas to be measured flowing to detection chamber 102;Gas sensor 104 is arranged in detection chamber 102 and is used for detecting the content of the gas to be measured flowing to detection chamber 102;Exhaust duct 105, the inlet of exhaust duct 105 is communicated with the outlet of detection chamber 102, and the outlet of exhaust duct 105 is communicated with the atmosphere environment;Alarm, which is communicated with gas sensor 104.

[0026] As Figure 1 The detection point position is provided with a detection valve, in the normal state, the detection valve is in the closed state, and when gas detection is needed, the detection valve is opened to discharge the gas to be measured.

[0027] The gas sensor 104 is used for detecting the concentration of the gas to be measured, and when the gas sensor 104 detects that the gas concentration reaches the set critical point, the alarm sends an alarm signal to remind the worker to take safety measures.

[0028] Optionally, the alarm can be an audible and light alarm, which is arranged outside the detection box 100. Alternatively, the alarm is arranged in the detection chamber 102. In an embodiment, the gas sensor and the alarm can be integrally arranged in the detection chamber, for example, the gas sensor 104 and the alarm can be an integral whole (such as a gas alarm).

[0029] In order to facilitate the close communication between the detection box 100 and the detection outlet, the device can further include a sampling conduit 109, which is arranged between the buffer chamber 101 and the detection outlet of the gas to be measured, the inlet of the sampling conduit 109 is communicated with the detection outlet of the gas to be measured, the outlet of the sampling conduit 109 is communicated with the inlet of the buffer chamber 101, and the length and diameter of the sampling conduit 109 can be set according to actual needs to facilitate the installation and placement of the detection box 100.

[0030] Preferably, as Figure 1 The filter is arranged adjacent to the inlet of the buffer chamber, so that the gas to be measured entering the buffer chamber can be better buffered and filtered.

[0031] The gas to be measured flows from the sampling conduit 109 into the buffer chamber 101, is filtered by the filter 103, reaches the detection chamber 102, and is discharged from the detection chamber 102 to the atmosphere environment through the exhaust duct 105, realizing good circulation of the gas and ensuring detection of the gas to be measured in a relatively closed space.

[0032] Optionally, the filter 103 is filter cotton. Alternatively, the filter 103 is an air filter 103.

[0033] In specific embodiments, the filter cotton can be used as a partition between the buffer chamber 101 and the detection chamber 102, for example, the filter cotton is uniformly arranged between the buffer chamber 101 and the detection chamber 102. Of course, the filter cotton can also be arranged at intervals between the buffer chamber 101 and the detection chamber 102.

[0034] Wherein, the gas sensor 104 can be placed at any position in the detection chamber 102, and the areas of the buffer chamber 101 and the detection chamber 102 can be set as needed.

[0035] Further, in order to facilitate the replacement of the gas sensor 104, the detection chamber 102 can further include a first opening, and the first opening is closed by a movable cover plate. Optionally, the movable cover plate can be a pull-out cover plate, such as Figure 1 As shown, the detection chamber is opened and closed by the first pull-out cover plate 107, and when the gas sensor 104 needs to be replaced, opening the first pull-out cover plate 107 facilitates the taking and placing of the gas sensor 104.

[0036] Further, in order to facilitate the replacement of the filter 103, the buffer chamber 101 can further include a second opening, and the second opening is closed by a movable cover plate. Optionally, the movable cover plate can be a pull-out cover plate, such as Figure 1 As shown, the buffer chamber is opened and closed by the second pull-out cover plate 108, and when the filter 103 needs to be replaced, opening the second pull-out cover plate 108 facilitates the replacement of the filter 103.

[0037] Further, in order to facilitate real-time observation of the gas content, the gas sensor 104 can further include a display screen 106, and the display screen 106 is used to display the detected gas content. The detection box 100 is made of transparent material.

[0038] Of course, as other optional embodiments, the device can include a display screen 106, and the display screen 106 is arranged outside the detection box 100, and the display screen 106 is in communication connection with the gas sensor 104, and the display screen 106 is used to display the detected gas content.

[0039] In order to better understand the above technical solutions, the above technical solutions will be described in detail in conjunction with the drawings and specific embodiments in the specification:

[0040] The device can be applied to sampling and analyzing gas in harmful gas equipment and facility maintenance in steel metallurgical enterprises, and the detection box can be made of transparent material for facilitating observation of the reading of the display screen of the alarm. The operation method can specifically include: first, the portable sensor related to the detection gas is placed into the detection box through the first pull-out cover plate of the detection chamber, the detection chamber and the pull-out cover plate are closed, then the gas sampling pipe is connected with the detection outlet of the to-be-detected gas at the inspection point, the detection valve is opened, the to-be-detected gas fills the detection box, the gas composition in the detection box is consistent with that in the equipment and pipeline, so that the accuracy of the sensor detection value is ensured.

[0041] The device solves the problem that in the gas replacement detection in the harmful gas equipment and facility maintenance and gas stop and sending operation, the manual portable alarm is used to detect and analyze gas through the detection point directly connected with the atmosphere, the detected gas directly contacts with the atmosphere, a certain amount of mixed gas is formed at the detection position, and the accuracy of the detection value is affected. Meanwhile, the problem that the detection value accuracy is affected by the inspection methods of different persons is eliminated.

[0042] The gas detection device has at least the following beneficial effects: 1. The detection is not affected by the external environment, and the accuracy of the detection value is improved, for example, the wind and rain weather has a greater influence on the gas flow of the detection port, and the detection is difficult; 2. The device is provided with a buffer chamber, the alarm probe is prevented from contacting impurities, the alarm is protected, and the service life is prolonged; 3. The detection time is shortened, and the work efficiency is improved; 4. The amount of purging gas is reduced, and energy is saved.

[0043] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all changes and modifications falling within the scope of the present application.

[0044] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A gas detection device, characterized by, The application relates to a gas detection device. The device comprises: a detection box, which is provided with a buffer chamber and a detection chamber, the buffer chamber and the detection chamber are separated by a filter, the inlet of the buffer chamber is communicated with a gas detection outlet, the buffer chamber is used for receiving the gas, and the filter is used for filtering the gas flowing to the detection chamber; a gas sensor, which is arranged in the detection chamber and is used for detecting the content of the gas flowing to the detection chamber; an exhaust pipe, the inlet of the exhaust pipe is communicated with the outlet of the detection chamber, and the outlet of the exhaust pipe is communicated with an atmospheric environment; 2. The apparatus of claim 1, wherein, an alarm, which is communicated with the gas sensor.

3. The apparatus of claim 1, wherein, The filter is filter cotton.

4. The apparatus of claim 1, wherein, The alarm is an audible and visual alarm, the audible and visual alarm is arranged outside the detection box or in the detection chamber.

5. The apparatus of claim 1, wherein, The gas sensor further comprises a display screen, the display screen is used for displaying the detected gas content, and the detection box is made of transparent material. The application further relates to a gas detection device.

6. The apparatus of claim 1, wherein, The device comprises:

7. The apparatus of claim 1, wherein, a display screen, which is arranged outside the detection box and is communicated with the gas sensor, and the display screen is used for displaying the detected gas content.

8. The apparatus of claim 6 or 7, wherein, The detection chamber further comprises a first opening, which is closed by a movable cover plate.

9. The apparatus of claim 1, wherein, The buffer chamber further comprises a second opening, which is closed by a movable cover plate. The movable cover plate is a pull-out cover plate.

10. The apparatus of claim 9, wherein, The application further relates to a gas detection device. The device comprises: a sampling pipe, the inlet of the sampling pipe is communicated with the gas detection outlet, and the outlet of the sampling pipe is communicated with the inlet of the buffer chamber. The filter is arranged on the adjacent side of the inlet of the buffer chamber.

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