Combustible gas alarm

Abstract

The utility model provides a combustible gas alarm, which comprises a shell, a line pipe and a gas conduit, the line pipe and the gas conduit are arranged in the shell, a display screen is arranged at the front end of the shell, a microprocessor is arranged in the shell, and the microprocessor is electrically connected with the display screen; the gas conduit comprises a functional part and a filtering part, a combustible gas sensor is arranged in the functional part, the microprocessor is electrically connected with the combustible gas sensor through an operational amplifier, and a plurality of layers of filter screens are arranged in the filtering part. The device is convenient to install and sensitive in detection, and meets market requirements.

Description

Technical Field

[0001] The present application relates to the technical field of alarms, and in particular to a combustible gas alarm. Background Art

[0002] In modern life and industrial production, some other flammable gases are commonly used, such as natural gas, gas, etc. Once a leak occurs, it is very easy to cause a production safety accident, and it is also very easy to cause an explosion, which can easily threaten the life and health of workers. Usually, alarms are installed in places where gas is stored or processed. The alarm is mainly composed of a combustible gas sensor and an alarm. When the concentration of combustible gas in the air reaches the preset value, the alarm will sound.

[0003] General combustible gas alarms on the market are not highly sensitive. For example, if a general combustible gas alarm is fixed to a wall and the leak is far away from the device, then when it is detected, it has actually been leaking for some time, posing a safety hazard. Utility Model Content

[0004] 1. Purpose of application

[0005] In view of this, the purpose of the present application is to provide a combustible gas alarm, which is used to solve the technical problem that the installation position of the traditional combustible gas alarm is too far from the leakage position and the detection is not sensitive.

[0006] (II) Technical solution

[0007] The present application discloses a combustible gas alarm, comprising a shell, a wire tube and a gas conduit, wherein the wire tube and the gas conduit are arranged at the shell, a display screen is arranged at the front end of the shell, a microprocessor is arranged in the shell, and the microprocessor is electrically connected to the display screen;

[0008] The gas conduit comprises a functional part and a filter part. A combustible gas sensor is arranged in the functional part. The microprocessor is electrically connected to the combustible gas sensor via an operational amplifier. Several layers of filter mesh are arranged in the filter part.

[0009] In a possible implementation, a control wire is disposed in the wire tube, the control wire and the wire tube are fixedly connected via a nut, the control wire is electrically connected to the microprocessor, and the control wire is used to be externally connected to a main controller.

[0010] In a possible implementation manner, the filter portion is disposed at the inlet of the gas conduit, and a plurality of transverse air inlet holes are disposed on the inlet of the gas conduit.

[0011] In a possible implementation manner, a buzzer is provided on one side of the housing, and the alarm is electrically connected to the microprocessor.

[0012] In a possible implementation manner, fixing ears are provided on both sides of the shell.

[0013] In a possible embodiment, a sleeve, a movable rod and a fixing screw are provided on the outer shell, the movable rod is slidably connected to the sleeve, a connecting hole threadedly connected to the fixing screw is provided on the sleeve, the fixing screw passes through the connecting hole and abuts against the movable rod, and a fixing block is provided at one end of the movable rod away from the outer shell.

[0014] In a possible implementation manner, a first fixing hole is formed on the fixing ear, a second fixing hole is formed on the fixing block, and an axis of the first fixing hole is perpendicular to an axis of the second fixing hole.

[0015] Beneficial Effects

[0016] The present application installs a combustible gas alarm near the combustible gas leakage site. The combustible gas is detected by the combustible gas sensor through the gas duct, and the gas composition and concentration information are displayed on a display screen. A filter is provided on the filter part to prevent dust from entering the alarm.

[0017] Other advantages, objectives and features of the present application will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and study, or can be taught from the practice of the present application to some extent. The objectives and other advantages of the present application can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain and illustrate the present application, but should not be construed as limiting the scope of protection of the present application.

[0019] Figure 1 It is a structural schematic diagram of a combustible gas alarm of the present application;

[0020] Figure 2 It is a schematic diagram of the structure of the gas conduit of the present application;

[0021] Among them, there are a shell 1, a wire tube 2, a control wire 3, a display screen 4, a nut 5, a gas duct 6, a functional part 61, a filter part 62, a combustible gas sensor 7, a filter screen 8, an air inlet hole 9, an air intake pump 10, a buzzer 11, a fixing ear 12, a sleeve 13, a movable rod 14, a fixing screw 15, and a fixing block 16. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] like Figure 1-2 As shown, the present application discloses a combustible gas alarm, comprising a housing 1, a wire tube 2 formed integrally with the housing 1 is disposed above the housing 1, a display screen 4 is disposed at the front end of the housing 1, the display screen 4 is an LCD display screen, a microprocessor is installed inside the housing 1, the microprocessor is a single-chip microcomputer, and the single-chip microcomputer is electrically connected to the display screen 4;

[0026] A control wire 3 is installed in the wire tube 2. The control wire 3 and the wire tube 2 are fixedly connected by a nut 5, which facilitates the disassembly and installation of the internal components of the housing 1. The control wire is electrically connected to the microprocessor. The control wire 3 is connected to the main controller. The detection information of the combustible gas alarm is transmitted to the main controller through the control wire 3. The main controller can monitor multiple combustible gas alarms at the same time.

[0027] A gas conduit 6 is installed below the housing 1. The gas conduit 6 is divided into multiple sections, specifically including a functional part 61 and a filter part 62. A combustible gas sensor 7 is installed in the functional part 61. The combustible gas sensor 7 uses a carrier catalytic element. The carrier catalytic element and a metal film resistor form a measuring bridge to accurately and sensitively detect the composition and concentration of the combustible gas. The microprocessor is electrically connected to the combustible gas sensor 7 through an operational amplifier. The filter part 62 is located at the entrance of the gas conduit 6. A plurality of transverse air inlet holes 9 are opened on the entrance of the gas conduit 6. An air intake pump 10 can be installed in the filter part 62 to improve air circulation. The air intake pump 10 is electrically connected to the microprocessor. The functional part 61 is located above the filter part 62. Two layers of filter screens 8 are installed in the filter part 62 to filter dust and impurities, improve the dustproof effect of the device, and improve the detection sensitivity of the device to a certain extent.

[0028] A buzzer 11 is installed on one side of the housing 1, and when a combustible gas leak is detected, an alarm is sounded to alert the staff.

[0029] The housing 1 is provided with fixing ears 12 on both sides thereof, and a first fixing hole is provided on the fixing ears 12. The axis of the first fixing hole is arranged horizontally, so that the device can be installed on a vertical wall through the fixing ears 12.

[0030] A sleeve 13, a movable rod 14 and a fixing screw 15 are provided on the top of the shell 1. The movable rod 14 is slidably connected to the sleeve 13. A connecting hole is provided on the sleeve 13 to which the fixing screw 15 is threadedly connected. The fixing screw 15 passes through the connecting hole and abuts against the movable rod 14. A fixing block 16 is provided at the end of the movable rod 14 away from the shell 1. A plurality of second fixing holes are opened on the fixing block 16. The axis of the second fixing hole is vertically arranged, so that the device can be installed on the horizontal wall through the fixing block 16. If the horizontal wall, such as the ceiling, is too high, the movable rod 14 can be adjusted to slide and the device can be extended so that the gas conduit 6 is closer to the leakage source, thereby improving the detection sensitivity.

[0031] In summary, the present application has various installation methods. It can be installed on a horizontal wall or a vertical wall, adapting to complex installation environments. When installed on a vertical wall, the height of the device can be adjusted to be close to the leakage source, thereby improving detection efficiency and sensitivity.

[0032] Those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features from different embodiments is meant to be within the scope of the present application and to form different embodiments.

[0033] Those skilled in the art will appreciate that the description of each embodiment has its own emphasis, and for parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0034] Although the embodiments of the present application are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations all fall within the scope defined by the attached claims. The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present utility model, and these modifications or replacements should be included in the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be based on the protection scope of the claims.

Claims

1. A combustible gas alarm, characterized in that: The device comprises a housing, a wire tube and a gas conduit, wherein the wire tube and the gas conduit are arranged on the housing, a display screen is arranged on the front end of the housing, a microprocessor is arranged in the housing, and the microprocessor is electrically connected to the display screen; The gas conduit includes a functional part and a filter part. A combustible gas sensor is provided in the functional part. The microprocessor is electrically connected to the combustible gas sensor through an operational amplifier. Several layers of filter mesh are provided in the filter part.

2. A combustible gas alarm according to claim 1, characterized in that: A control wire is provided in the wire tube, the control wire and the wire tube are fixedly connected by a nut, the control wire is electrically connected to the microprocessor, and the control wire is used to connect to an external main controller.

3. A combustible gas alarm according to claim 1, characterized in that: The filter portion is arranged at the inlet of the gas conduit, and a plurality of transverse air inlet holes are arranged on the inlet of the gas conduit.

4. A combustible gas alarm according to claim 1, characterized in that: A buzzer is provided on one side of the housing, and the alarm is electrically connected to the microprocessor.

5. A combustible gas alarm according to claim 1, characterized in that: Fixing ears are provided on both sides of the shell.

6. A combustible gas alarm according to claim 5, characterized in that: The outer shell is provided with a sleeve, a movable rod and a fixing screw. The movable rod is slidably connected to the sleeve. The sleeve is provided with a connecting hole for threaded connection with the fixing screw. The fixing screw passes through the connecting hole and abuts against the movable rod. A fixing block is provided at the end of the movable rod away from the outer shell.

7. A combustible gas alarm according to claim 6, characterized in that: A first fixing hole is formed on the fixing ear, a second fixing hole is formed on the fixing block, and an axis of the first fixing hole is perpendicular to an axis of the second fixing hole.

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