Leakage-proof gas alarm calibration auxiliary device

Abstract

The utility model discloses a leak-proof gas alarm calibration auxiliary device comprising a verification cover which is in a bowl-shaped structure; the spliced long pipe is detachably connected to the bottom of the verification cover, and the bottom end of the spliced long pipe is connected with the output end of the gas supply device; the annular air bag is installed at the edge part of the verification cover, a plurality of through holes are formed in the side wall of the annular air bag, and the through holes are communicated with the interior of the verification cover; the air supply pipeline is installed in the verification cover, and the splicing type long pipe is connected with the annular air bag through the air supply pipeline; the gas pressure detection assembly is mounted in the verification cover; the acousto-optic signal capturing module is mounted in the verification cover; the terminal control system, the acousto-optic signal capture module and the gas pressure detection assembly are all connected with the middle end control system. A leather hose is replaced by the spliced long pipe, so that the air supply difficulty is reduced, and the problems of winding and breakage of the leather hose are avoided.

Description

Technical Field

[0001] This utility model relates to the field of gas alarm calibration technology, and in particular to a leak-proof gas alarm calibration auxiliary device. Background Technology

[0002] In the chemical production field, accurate calibration of gas detectors is a necessary step to ensure safe production. However, traditional calibration methods have significant drawbacks: when the equipment is installed high on a steel frame, calibration personnel must climb to the dangerous area, posing a risk of fall, and rely on bamboo poles tied to hoses to deliver standard gas. Currently, the common calibration method involves using bamboo poles with hoses to deliver gas to the instrument's inlet. This approach has the following problems:

[0003] (1) The hose needs to be carried by a bamboo pole. The hose has no fixing mechanism and is easy to get tangled.

[0004] (2) The cover of the calibration device could not fit completely against the mounting surface, resulting in a large leakage of standard gas during the filling process. This led to a large error.

[0005] Based on the above-mentioned technical problems, this utility model provides a calibration auxiliary device for a leak-proof gas alarm. Utility Model Content

[0006] The purpose of this invention is to provide a calibration auxiliary device for a leak-proof gas alarm to solve the problems existing in the prior art.

[0007] To achieve the above objectives, this utility model provides the following solution: This utility model provides a leak-proof gas alarm calibration auxiliary device, comprising:

[0008] The inspection cover is a bowl-shaped structure;

[0009] A spliced ​​long tube, which is detachably connected to the bottom of the inspection cover, and the bottom end of the spliced ​​long tube is connected to the output end of the air supply device;

[0010] An annular airbag is installed on the edge of the inspection cover. The side wall of the annular airbag has several through holes that communicate with the inside of the inspection cover.

[0011] An air supply line is installed inside the calibration cover, and the spliced ​​long tube is connected to the annular airbag through the air supply line.

[0012] A gas pressure detection component is installed inside the calibration chamber and is used to detect the gas pressure inside the calibration chamber.

[0013] An audible and visual signal capture module is installed inside the calibration chamber and is used to capture the audible and visual signals emitted by the gas alarm.

[0014] The terminal control system includes an acoustic and optical signal capture module and a gas pressure detection component, both of which are connected to the mid-level control system.

[0015] According to the leak-proof gas alarm calibration auxiliary device provided by this utility model, the spliced ​​long tube includes several sets of connecting tubes, the end of the connecting tube is equipped with a connector, the connector is inserted into the tail end of the connecting tube and is threadedly connected to the connecting tube, and the topmost connecting tube is welded to the bottom end of the calibration cover.

[0016] According to the leak-proof gas alarm calibration auxiliary device provided by this utility model, the gas supply pipeline includes a gas distributor, which is installed on the inner wall of the calibration cover. The gas distributor is fixedly connected to a plurality of gas distribution pipes at equal intervals in the circumferential direction. One end of the gas distribution pipe is fixedly connected to the annular air bladder. The gas distribution pipe has an arc-shaped structure.

[0017] According to the leak-proof gas alarm calibration auxiliary device provided by this utility model, a sealing ring is provided between adjacent connecting pipes.

[0018] According to the leak-proof gas alarm calibration auxiliary device provided by this utility model, the gas pressure detection component includes a gas pressure sensor, and several groups of gas pressure sensors are arranged inside the calibration chamber.

[0019] According to the leak-proof gas alarm calibration auxiliary device provided by this utility model, a pressure regulating valve is installed on the through hole.

[0020] The present invention discloses the following technical effects:

[0021] 1) By replacing the hose with a spliced ​​long tube, the difficulty of gas supply is reduced, and the problems of tangling and hose breakage are avoided.

[0022] 2) The annular airbag design creates a relatively closed environment inside the calibration chamber, preventing the standard gas from escaping.

[0023] 3) A gas pressure detection component is installed inside the calibration chamber to facilitate confirmation of whether there is gas leakage during the calibration process.

[0024] 4. The sound and light signal capture module captures sound and light signals in a timely manner, and accurately predicts the reaction sensitivity of the gas alarm.

[0025] 5. The fully enclosed environment reduces gas loss during the verification process, thus lowering costs. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the leak-proof gas alarm calibration auxiliary device of the present invention;

[0028] Figure 2 This is a schematic diagram of the internal structure of the testing cover of the present invention;

[0029] Figure 3 This is a top view of the testing cover of the present invention.

[0030] The components include: 1. Inspection cover; 2. Annular airbag; 3. Through hole; 4. Connecting pipe; 5. Connector; 6. Air distributor; 7. Air distribution tube. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figure 1-3 This utility model provides a calibration auxiliary device for a leak-proof gas alarm, comprising:

[0034] Inspection cover 1, which has a bowl-shaped structure;

[0035] A spliced ​​long tube is detachably connected to the bottom of the calibration cover 1, and the bottom end of the spliced ​​long tube is connected to the output end of the air supply device.

[0036] An annular airbag 2 is installed on the edge of the calibration cover 1. Several through holes 3 are provided on the side wall of the annular airbag 2, and the through holes 3 communicate with the inside of the calibration cover 1.

[0037] The air supply line is installed inside the calibration cover 1, and the spliced ​​long tube is connected to the annular airbag 2 through the air supply line.

[0038] A gas pressure detection component is installed inside the calibration chamber 1 and is used to detect the gas pressure inside the calibration chamber 1.

[0039] The audible and visual signal capture module is installed inside the calibration chamber 1 and is used to capture the audible and visual signals emitted by the gas alarm.

[0040] The terminal control system, including the acoustic and optical signal capture module and the gas pressure detection component, is connected to the mid-level control system.

[0041] In operation, the bowl-shaped calibration cover 1 covers the gas alarm to be calibrated, and the annular airbag 2 expands by inflation, with its side wall through-hole 3 communicating with the interior of the calibration cover 1. The airbag achieves both edge sealing (preventing gas leakage) and uniform release of test gas through the through-hole 3, ensuring that the alarm is in full contact with the standard concentration gas.

[0042] The test gas output from the gas supply device enters the gas supply pipeline through a spliced ​​long tube and is finally injected into the annular airbag 2. The gas diffuses into the calibration chamber 1 through the airbag through-hole 3, forming a stable gas environment. The detachable design of the spliced ​​long tube can adapt to the calibration needs of alarms at different heights and positions.

[0043] The gas pressure detection component monitors the pressure inside the enclosure in real time to ensure a stable concentration of the test gas.

[0044] The sound and light signal capture module synchronously records the sound and light signals (such as buzzer frequency and flash code) when the alarm is triggered to verify the effectiveness of the alarm function.

[0045] The terminal control system presets calibration parameters (such as gas type, concentration threshold, and response time), automatically adjusts the output of the gas supply device, compares pressure data with alarm signals, and generates a calibration report. If the alarm fails to respond within the specified time or the signal is abnormal, the system marks the calibration as failed.

[0046] Further optimization of the scheme: the spliced ​​long tube includes several sets of connecting tubes 4, with connectors 5 installed at the ends of the connecting tubes 4. The connectors 5 are inserted into the tail end of the connecting tubes 4 and are threadedly connected to the connecting tubes 4. The connecting tube 4 at the top is welded to the bottom end of the inspection cover 1.

[0047] The scheme is further optimized. The air supply pipeline includes an air distribution head 6, which is installed on the inner wall of the test cover 1. Several air distribution pipes 7 are fixedly connected to the air distribution head 6 at equal intervals in the circumferential direction. One end of the air distribution pipe 7 is fixedly connected to the annular airbag 2. The air distribution pipe 7 has an arc-shaped structure.

[0048] The design was further optimized by installing a sealing ring between adjacent connecting pipes 4.

[0049] The scheme is further optimized. The gas pressure detection component includes a gas pressure sensor, and several sets of gas pressure sensors are set inside the calibration chamber 1.

[0050] The design was further optimized by installing a pressure regulating valve on through hole 3.

[0051] The spliced ​​long tubes are quickly assembled via threaded connectors 5, with the topmost connecting tube 4 welded to the calibration cover 1 to form an airtight base. The test gas supplied by the gas supply device passes sequentially through each section of the connecting tube 4, with sealing rings ensuring no leakage between sections. After reaching the calibration cover 1, the gas is split by the gas distributor 6 into multiple arc-shaped gas distribution tubes 7, and finally injected into the annular airbag 2.

[0052] The circumferentially spaced design of the gas distributor 6 ensures uniform gas distribution to each gas distribution pipe 7. The coupling structure between the arc-shaped gas distribution pipe 7 and the annular airbag 2 (similar to the inner cavity of a tire) promotes uniform gas diffusion along the circumference of the airbag. The pressure regulating valve in the through-hole 3 dynamically adjusts the gas flow rate in each area based on feedback from the gas pressure sensor, achieving precise pressure control of ±0.5 kPa.

[0053] Gas pressure sensors distributed at different heights in the calibration chamber 1 monitor the spatial pressure gradient in real time. When a pressure deviation is detected, the terminal control system adjusts the gas supply to the corresponding gas distribution pipe 7 via a pressure regulating valve. Combined with the alarm response parameters recorded by the audible and visual signal capture module, multi-parameter calibration in three-dimensional space is completed.

[0054] It should be noted that electrical components not specifically designated in this application can be directly replaced by existing technologies, and no specific limitations are made in this embodiment.

[0055] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not 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.

[0056] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A leak-tight gas alarm calibration aid, characterized in that The utility model relates to a kind of gas pressure detection device, including: Calibration cover (1), the calibration cover (1) is bowl structure; Spliced long tube, the spliced long tube is detachably connected in the bottom of the calibration cover (1), and the bottom end of the spliced long tube is connected with the output end of gas supply device; Annular air bag (2), the annular air bag (2) is installed in the edge portion of the calibration cover (1), a plurality of through holes (3) are formed in the sidewall of the annular air bag (2), and the through holes (3) are communicated with the calibration cover (1); Gas supply pipeline, the gas supply pipeline is installed in the calibration cover (1), and the spliced long tube and the annular air bag (2) are connected through the gas supply pipeline; Gas pressure detection assembly, the gas pressure detection assembly is installed in the calibration cover (1), and is used for detecting the gas pressure in the calibration cover (1); Acousto-optic signal capture module, the acousto-optic signal capture module is installed in the calibration cover (1), and is used for capturing the sound and light signal emitted by gas alarm; Terminal control system, the acousto-optic signal capture module and the gas pressure detection assembly are connected with the terminal control system.

2. A leakproof gas alarm calibration aid according to claim 1, wherein: The spliced long tube includes a plurality of groups of connecting pipes (4), the connecting pipe (4) end is provided with a connector (5), the connector (5) is inserted in the tail end of the connecting pipe (4), and is threadedly connected between the connecting pipe (4), and the connecting pipe (4) located in the top end is welded between the bottom end of the calibration cover (1).

3. A leakproof gas alarm calibration aid according to claim 1, wherein: The gas supply pipeline includes a gas distribution head (6), the gas distribution head (6) is installed on the inner wall of the calibration cover (1), a plurality of gas distribution pipes (7) are fixedly communicated on the gas distribution head (6) in equidistant, one end of the gas distribution pipe (7) is fixedly communicated with the annular air bag (2), and the gas distribution pipe (7) is arc structure.

4. A leakproof gas alarm calibration aid according to claim 2, wherein: Sealing ring is arranged between adjacent connecting pipes (4).

5. A leakproof gas alarm calibration aid according to claim 1, wherein: The gas pressure detection assembly includes a plurality of groups of gas pressure sensors, and the gas pressure sensors are arranged in the calibration cover (1).

6. A leakproof gas alarm calibration aid according to claim 1, wherein: A pressure regulating valve is installed on the through hole (3).

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