Anti-interference gas detection early warning device

Abstract

The utility model discloses an anti-interference gas detection early warning device which comprises a detector body, a gas inlet pipe is arranged on one side of the detector body, a plurality of gas inlet holes are formed in the side wall of the gas inlet pipe in an annular array mode, and the detector body is provided with an early warning lamp used for conducting early warning on abnormal detection results. The gas detection device further comprises a treatment assembly arranged on the gas inlet pipe and used for treating gas to be detected, the treatment assembly comprises three arc-shaped mounting holes formed in the side wall of the gas inlet pipe, the three arc-shaped mounting holes are connected with arc-shaped mounting plates through connecting assemblies, and the three arc-shaped mounting plates are provided with filtering templates. According to the combustible gas detector, due to the arrangement of the processing assembly, multi-stage progressive filtration and adsorption of the gas to be detected are formed, so that the interference of particles and moisture in the gas to be detected on the detection precision of the combustible gas detector is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection, in particular to an anti-interference gas detection and early warning device. Background Art

[0002] After the combustible gas detector completes the detection of combustible gas concentration, the detector's microprocessor will convert the digital signal into a combustible gas concentration value based on the preset algorithm and calibration parameters, and then compare the measured concentration value with the pre-set alarm threshold. When the combustible gas concentration exceeds this alarm threshold, the detector will determine that a warning signal needs to be issued, and then issue an early warning through a combination of sound and light alarms.

[0003] In the process of detecting the combustible gas concentration in the environment, when the humidity in the ambient gas is high, for semiconductor-type combustible gas detectors, water vapor (H2O) and certain volatile organic compounds (VOCs) will compete with the combustible gas for adsorption on the surface of the semiconductor material, thereby masking the adsorption signal of the combustible gas, causing interference with the detection of the combustible gas concentration, and further leading to errors in the detection results. At the same time, in dusty environments, such as cement plants and coal mines, if the dust is conductive, it will form a conductive path on the semiconductor surface, resulting in a decrease in resistance, creating an illusion similar to the adsorption of combustible gas. On the contrary, if the dust is insulating, it will prevent the transfer of electrons inside the semiconductor, increase the resistance, interfere with the normal signal output of the detector, and cause deviations in the measurement results.

[0004] Therefore, there is an urgent need for an anti-interference gas detection and early warning device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an anti-interference gas detection and early warning device to solve the problem raised in the above background technology that when there is moisture and dust in the gas in the detection environment, the combustible gas detector will be interfered with.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: an anti-interference gas detection and early warning device, comprising a detector body, an air inlet pipe provided on one side of the detector body, a plurality of air inlet holes formed in a circular array on the side wall of the air inlet pipe, an early warning light provided on the detector body for issuing an early warning of abnormal detection results, and a processing component provided on the air inlet pipe for processing the gas to be detected;

[0007] The processing component includes three arc-shaped mounting holes opened on the side wall of the air inlet pipe, and the three arc-shaped mounting holes are connected to an arc-shaped mounting plate through a connecting component. The three arc-shaped mounting plates are provided with filter templates. The three filter templates are the first filter plate, the second filter plate and the drying plate from the air inlet hole to the detector body in sequence. The filter hole of the first filter plate is larger than the filter hole of the second filter plate.

[0008] The drying plate is made of silica gel and has a thickened thickness.

[0009] The connecting assembly includes a fixing plate fixedly connected to the side of the arc-shaped mounting plate away from the air intake pipe, a fixing hole is opened on one side of the fixing plate, and the fixing hole is connected to a connecting block through a telescopic assembly, and a connecting plate is fixedly connected to one side of the air intake pipe, and a connecting hole is opened on the side of the connecting plate close to the fixing hole, and the connecting hole is matched with the connecting block, and the fixing plate is provided with a driving assembly for driving the connecting block.

[0010] A first inclined surface is formed on one side of the connecting block close to the arc-shaped mounting plate.

[0011] The telescopic component is a telescopic spring, one end of the telescopic spring is connected to the bottom wall of the fixing hole, and the other end of the telescopic spring is connected to the connecting block.

[0012] The driving assembly includes a T-shaped rod slidably connected to the side of the fixed plate away from the arc-shaped mounting plate, the side wall of the T-shaped rod is sleeved with a driving spring, the two ends of the driving spring are respectively connected to the T-shaped rod and the fixed plate, and the connecting block is provided with a second inclined surface on the side close to the T-shaped rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model installs three filter templates into the air inlet pipe through the setting of the processing component under the installation limit action of the connecting component, so that the gas to be detected passes through the first filter plate, the second filter plate and the drying plate in sequence, forming a multi-stage progressive filtration and adsorption of the gas to be detected, thereby effectively filtering and adsorbing the particles and moisture in the gas, thereby reducing the particle and water vapor content in the gas entering the internal body of the detector, thereby further reducing the interference caused by the particles and moisture in the gas to be detected to the detection accuracy of the combustible gas detector, thereby ensuring the timeliness and accuracy of the early warning of the combustible gas concentration in the ambient gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the processing component of the present utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the connection component of the utility model;

[0018] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0019] In the figure: 101, detector body; 102, warning light; 103, air inlet pipe; 104, air inlet hole; 201, arc-shaped mounting hole; 202, arc-shaped mounting plate; 203, first filter plate; 204, second filter plate; 205, drying plate; 301, fixing plate; 302, fixing hole; 303, connecting block; 304, connecting plate; 305, connecting hole; 306, first inclined plane; 4, telescopic spring; 501, T-bar; 502, drive spring; 503, second inclined plane. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1

[0022] See also Figures 1-4 The anti-interference gas detection and early warning device shown in the figure includes a detector body 101, an air inlet pipe 103 is provided on one side of the detector body 101, and a plurality of air inlet holes 104 are formed in a circular array on the side wall of the air inlet pipe 103. The detector body 101 is provided with an early warning light 102 for warning of abnormal detection results, and also includes a processing component arranged on the air inlet pipe 103 for processing the gas to be detected;

[0023] The processing assembly includes three arc-shaped mounting holes 201 opened on the side wall of the air inlet pipe 103. The three arc-shaped mounting holes 201 are connected to the arc-shaped mounting plate 202 through a connecting assembly. The three arc-shaped mounting plates 202 are provided with filter templates. The three filter templates are a first filter plate 203, a second filter plate 204 and a drying plate 205 from the air inlet hole 104 to the detector body 101. The filter holes of the first filter plate 203 are larger than the filter holes of the second filter plate 204.

[0024] It should be noted here that: through the setting of the processing component, under the installation limit of the connecting component, the three filter templates are installed in the air inlet pipe 103, so that the gas to be detected passes through the first filter plate 203, the second filter plate 204 and the drying plate 205 in turn, forming a multi-stage progressive filtration and adsorption of the gas to be detected, thereby effectively filtering and adsorbing the particles and moisture in the gas, thereby reducing the particle and water vapor content in the gas entering the detector body 101, thereby further reducing the interference caused by the particles and moisture in the gas to be detected to the detection accuracy of the combustible gas detector, thereby ensuring the timeliness and accuracy of the early warning of the combustible gas concentration in the ambient gas.

[0025] It is worth noting that the present invention is mainly aimed at semiconductor-type combustible gas detectors, which utilize the gas-sensitive properties of certain metal oxide semiconductor materials such as tin oxide SnO2, zinc oxide ZnO, etc. to detect the concentration of combustible gas.

[0026] See also Figure 2 , the drying plate 205 shown in the figure is made of silica gel and has a thickened thickness;

[0027] It should be noted here that: by thickening the drying plate 205, the time for the gas to pass through the drying plate 205 is increased, thereby improving the drying effect of the gas. At the same time, the drying plate 205 is made of silica gel. Silica gel can be used to take advantage of its stable chemical properties, non-toxic and odorless, and the many tiny pores inside its particles, which can absorb a large amount of moisture. When the silica gel absorbs enough moisture, it will change from the original blue color-changing silica gel or colorless to pink, making it easier for users to judge whether the drying plate 205 needs to be replaced.

[0028] Working principle: When the detector body 101 is in use, the detector body 101 is first installed to the detection point, and then the three filter templates are installed into the air inlet pipe 103 using the connecting components. After the three filter templates are installed, the detector body 101 can be powered on. When the gas in the environment enters the detector body 101 from the air inlet hole 104 on the air inlet pipe 103, the combustible gas molecules will be adsorbed on the surface of the semiconductor and will undergo an electron exchange process with the semiconductor material. Taking tin oxide as an example, when combustible gas such as hydrogen H2 contacts the surface of tin oxide, the hydrogen molecules will dissociate and adsorb on the surface, releasing electrons, and these electrons will enter the tin oxide. The conduction band of the semiconductor is opened, thereby reducing the resistance of the semiconductor. On the contrary, if it is a combustible gas with weak reducing properties, it will obtain electrons from the semiconductor, resulting in an increase in resistance. This change in resistance is related to the concentration of the combustible gas. The resistance change is measured by the detection circuit, and the concentration information of the combustible gas can be obtained after signal processing. The measured concentration value is then compared with the preset alarm threshold. When the combustible gas concentration exceeds the alarm threshold, the detector will determine that an early warning signal needs to be issued, and then an early warning signal is issued through the early warning light 102 in a combination of sound and light alarm mode, thereby realizing the detection of the combustible gas concentration in the ambient gas and ensuring safety in the working environment.

[0029] At the same time, when the gas enters the detector body 101 from the air inlet 104, the gas will pass through the first filter plate 203, the second filter plate 204 and the drying plate 205 in sequence, thereby effectively filtering and adsorbing the particles and moisture in the gas, thereby reducing the particle and water vapor content in the gas entering the detector body 101, thereby further reducing the interference caused by the particles and moisture in the gas to be detected to the detection accuracy of the combustible gas detector, thereby ensuring the timeliness and accuracy of the early warning of the combustible gas concentration in the ambient gas.

[0030] Example 2

[0031] See also Figure 2 — Figure 4 This embodiment further explains Example 1. The connecting assembly shown in the figure includes a fixing plate 301 fixedly connected to the side of the arc-shaped mounting plate 202 away from the air intake pipe 103. A fixing hole 302 is formed on one side of the fixing plate 301. The fixing hole 302 is connected to a connecting block 303 via a telescopic assembly. A connecting plate 304 is fixedly connected to one side of the air intake pipe 103. A connecting hole 305 is formed on the side of the connecting plate 304 near the fixing hole 302. The connecting hole 305 is matched with the connecting block 303. The fixing plate 301 is provided with a driving assembly for driving the connecting block 303. A first inclined surface 306 is formed on the side of the connecting block 303 near the arc-shaped mounting plate 202.

[0032] It should be noted here that: through the setting of the connecting component, it is convenient to install and limit the filter template, thereby ensuring the stability of the filter template during use. At the same time, the use of the driving component facilitates the disassembly of the filter template, making it easy to clean or replace, thereby ensuring the long-term use of the filter template.

[0033] See also Figure 3 and Figure 4 , the telescopic component in the figure is a telescopic spring 4, one end of the telescopic spring 4 is connected to the bottom wall of the fixing hole 302, and the other end of the telescopic spring 4 is connected to the connecting block 303;

[0034] It should be noted that the telescopic spring 4 is provided to provide a reset function for the movement of the connecting block 303 .

[0035] See also Figure 3 and Figure 4 The driving assembly shown in the figure includes a T-shaped rod 501 slidably connected to the side of the fixed plate 301 away from the arc-shaped mounting plate 202. A driving spring 502 is sleeved on the side wall of the T-shaped rod 501. The two ends of the driving spring 502 are respectively connected to the T-shaped rod 501 and the fixed plate 301. A second inclined surface 503 is formed on the side of the connecting block 303 close to the T-shaped rod 501.

[0036] It should be noted here that the setting of the driving assembly facilitates the release of the connection limit between the arc-shaped mounting plate 202 and the arc-shaped mounting hole 201 .

[0037] Working principle: When installing the filter template, first connect the filter template to the arc-shaped mounting plate 202 (can be connected by clamping or countersunk screws), then insert the arc-shaped mounting plate 202 into the arc-shaped mounting hole 201. During the process of inserting the arc-shaped mounting plate 202 into the arc-shaped mounting hole 201, when the connecting block 303 and the connecting plate 304 abut against each other, the interaction force of the first inclined surface 306 and the guiding action of the fixing hole 302 will push the connecting block 303 to shrink into the fixing hole 302. As the arc-shaped mounting plate 202 is inserted into the arc-shaped mounting hole 201, the connecting block 303 will shrink into the fixing hole 302. With the continuous pushing of the plate 202, when the arc-shaped mounting plate 202 is matched with the arc-shaped mounting hole 201, the connecting block 303 will be matched with the connecting hole 305. At this time, under the elastic action of the telescopic component, the connecting block 303 will be pushed into the connecting hole 305 and abut against the bottom wall of the connecting hole 305. Therefore, under the abutting action of the connecting block 303, the connection between the arc-shaped mounting plate 202 and the arc-shaped mounting hole 201 is limited. At this time, the installation of the filter template is completed, thereby ensuring the stability of the filter template during use;

[0038] When the filter template needs to be cleaned or replaced after a period of use, the T-bar 501 is pressed so that one end of the T-bar 501 is against the second inclined surface 503 on the connecting block 303, and then under the guidance of the interaction force and the connecting hole 305, the connecting block 303 is pushed to shrink toward the fixing hole 302. At this time, the connection limit between the arc-shaped mounting plate 202 and the air inlet pipe 103 is released, making it easy to remove the filter template from the air inlet pipe 103 for cleaning or replacement, thereby ensuring the long-term use of the filter template.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An anti-interference gas detection and early warning device, comprising: A detector body (101), wherein an air inlet pipe (103) is provided on one side of the detector body (101), a plurality of air inlet holes (104) are provided in a circular array on a side wall of the air inlet pipe (103), and the detector body (101) is provided with a warning light (102) for warning of abnormal detection results; It is characterized by further comprising: A processing component disposed on the air inlet pipe (103) for processing the gas to be detected; The processing assembly comprises three arc-shaped mounting holes (201) opened on the side wall of the air inlet pipe (103); the three arc-shaped mounting holes (201) are connected to an arc-shaped mounting plate (202) via a connecting assembly; the three arc-shaped mounting plates (202) are provided with filter templates; the three filter templates are sequentially a first filter plate (203), a second filter plate (204) and a drying plate (205) from the air inlet hole (104) to the detector body (101); the filter holes of the first filter plate (203) are larger than the filter holes of the second filter plate (204).

2. The anti-interference gas detection and early warning device according to claim 1, characterized in that: The drying plate (205) is made of silica gel and has a thickened thickness.

3. The anti-interference gas detection and early warning device according to claim 1, characterized in that: The connection assembly comprises a fixing plate (301) fixedly connected to a side of the arc-shaped mounting plate (202) away from the air intake pipe (103); a fixing hole (302) is provided on one side of the fixing plate (301); the fixing hole (302) is connected to a connecting block (303) via a telescopic assembly; a connecting plate (304) is fixedly connected to one side of the air intake pipe (103); a connecting hole (305) is provided on a side of the connecting plate (304) close to the fixing hole (302); the connecting hole (305) is matched with the connecting block (303); and the fixing plate (301) is provided with a driving assembly for driving the connecting block (303).

4. The anti-interference gas detection and early warning device according to claim 3, characterized in that: A first inclined surface (306) is provided on one side of the connecting block (303) close to the arc-shaped mounting plate (202).

5. The anti-interference gas detection and early warning device according to claim 3, characterized in that: The telescopic component is a telescopic spring (4), one end of the telescopic spring (4) is connected to the bottom wall of the fixing hole (302), and the other end of the telescopic spring (4) is connected to the connecting block (303).

6. The anti-interference gas detection and early warning device according to claim 3, characterized in that: The driving assembly comprises a T-shaped rod (501) slidably connected to a side of the fixed plate (301) away from the arc-shaped mounting plate (202); a driving spring (502) is sleeved on the side wall of the T-shaped rod (501); two ends of the driving spring (502) are respectively connected to the T-shaped rod (501) and the fixed plate (301); and a second inclined surface (503) is provided on a side of the connecting block (303) close to the T-shaped rod (501).

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