CN219263982U

CN219263982U - Natural gas alarm device

Info

Publication number: CN219263982U
Application number: CN202223545779.4U
Authority: CN
Inventors: 陈卓
Original assignee: Anhui Jinqida Gas Equipment Manufacturing Co ltd
Current assignee: Anhui Jinqida Gas Equipment Manufacturing Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-27
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a natural gas alarm device which comprises an upper housing and a lower housing which are detachably connected, wherein an upper sealing cover and a lower sealing cover are respectively connected to opposite inner sides of the upper housing and the lower housing, a sealed cavity can be formed between the upper sealing cover and the lower sealing cover, and a natural gas alarm is connected to the upper sealing cover. The utility model has the advantages that: the alarm device not only can prevent natural gas from leaking from the joint of the pipeline flange, but also can give an alarm once leaking into the cavity, and reminds workers to process and maintain the leaking part.

Description

Natural gas alarm device

Technical Field

The utility model relates to the technical field of natural gas alarms, in particular to a natural gas alarm device.

Background

The natural gas leakage can generate a large amount of carbon monoxide, which is the root of gas poisoning, if a natural gas leakage alarm is adopted, the natural gas alarm can be timely warned, the effective rate of preventing carbon monoxide poisoning accidents from happening is more than ninety five percent, therefore, in the prior art, a gas station and a gasification station are both usually used for guaranteeing safety and are used for detecting and alarming, pipelines are needed for conveying the natural gas, the natural gas pipelines are possibly not aged or aged by a sealing ring at the pipeline connection part due to the installation connection mode, the leakage occurs at the flange connection part of the natural gas pipelines, and the natural gas can be overflowed into the air immediately due to only a small amount of leakage, the natural gas concentration in the air can not be greatly changed, so that the natural gas leakage can not be detected by the existing natural gas alarm, but a large amount of natural gas loss can be caused by long-time leakage, and the loss is caused.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a natural gas alarm device.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a natural gas alarm device, includes upper housing and lower housing that can dismantle the connection, connects respectively on the interior side that upper housing and lower housing are relative and goes up sealed cowling and lower sealed cowling, can form sealed cavity between upper sealed cowling and the lower sealed cowling, the internal connection natural gas alarm of upper sealed cowling.

Preferably, an air inlet pipe is connected to the lower housing, the air inlet pipe is communicated with the corresponding sealing cover, and a one-way valve is connected to the air inlet pipe.

Preferably, the cavity is filled with an inert gas.

Preferably, arc grooves are formed in opposite end surfaces of the upper seal cover and the lower seal cover.

Preferably, the sealing ring placing grooves are arranged on the opposite end surfaces of the upper sealing cover and the lower sealing cover, and sealing rings are arranged in the sealing ring placing grooves.

The utility model has the advantages that: according to the natural gas alarm device, the upper housing and the lower housing are fixed on the pipeline through the bolts, the flange of the pipeline is positioned in the cavity formed between the upper sealing housing and the lower sealing housing, helium is filled in the cavity through the air inlet pipe, external air pressure can be enhanced, combustible gas can be prevented from leaking out of the flange connection of the pipeline, the natural gas can only be positioned in the cavity even if the natural gas leaks out of the flange connection, and the natural gas can be sensed and sent out to alarm through the combustible gas alarm device.

Drawings

FIG. 1 is a schematic diagram of the principle and structure of a natural gas alarm device provided by the utility model;

FIG. 2 is a schematic illustration of the use of the present device;

FIG. 3 is a front view of the seal ring;

fig. 4 is a top view of the seal ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As shown in fig. 1, the natural gas alarm device provided by the utility model comprises an upper housing 1 and a lower housing 2 which are detachably connected, wherein arc plates 1.1 are welded at two ends of the upper housing 1 and the lower housing 2, connecting plates 1.2 are welded at two sides of each arc plate 1.1, through holes 1.3 are formed in each connecting plate 1.2, when the upper housing 1 and the lower housing 2 are connected to a pipeline, the inner side surfaces of the arc plates 1.1 are attached to the outer side surfaces of the pipeline, then bolts sequentially penetrate through the corresponding two through holes 1.3, and then the bolts are connected through nuts, so that the upper housing 1 and the lower housing 2 are fixed on the pipeline.

The upper sealing cover 3 and the lower sealing cover 6 are welded on the opposite inner sides of the upper cover 1 and the lower cover 2 respectively, the upper sealing cover 3 and the lower sealing cover 6 are rectangular cover bodies, and arc grooves 3.1 are formed in the opposite end faces of the upper sealing cover 3 and the lower sealing cover 6, so that the arc grooves 3.1 can be attached to a pipeline.

The sealing ring placing grooves 3.2 are formed in the opposite end faces of the upper sealing cover 3 and the lower sealing cover 6, sealing rings 3.3 are arranged in each sealing ring placing groove 3.2, the sealing rings 3.3 are shown in fig. 3 and 4, and when the upper sealing cover 3 and the lower sealing cover 6 are connected to the flange joint of a pipeline in a covering mode, the two sealing rings 3.3 can completely seal the cavity 4 to prevent air leakage.

When upper housing 1 and lower housing 2 are connected, can form sealed cavity 4 between upper seal housing 3 and the lower seal housing 6, make the flange junction of pipeline be in cavity 4, when flange junction gas leakage, combustible gas only can reveal in cavity 4, prevents that natural gas from leaking in the air.

As shown in fig. 2, a sealed cavity 4 can be formed between the upper sealing cover 3 and the lower sealing cover 6, a natural gas alarm 5 is connected to the upper sealing cover 3, the natural gas alarm 5 is an existing device, an alarm is sent out when natural gas is detected, and the natural gas alarm 5 senses and sends out an alarm when the flange joint of a pipeline leaks air.

The lower housing 2 is connected with an air inlet pipe 2.1, the air inlet pipe 2.1 is communicated with the corresponding sealing cover 3, the air inlet pipe 2.1 is connected with a one-way valve 2.2, and inert gas, which is helium in the embodiment, is filled into the cavity 4 through the air inlet pipe 2.1.

This device is fixed on the pipeline through the bolt with last housing 1 and lower housing 2, makes the flange of pipeline be in the cavity 4 that forms between last sealed cowling 3 and the lower sealed cowling 6, fills helium to cavity 4 through intake pipe 2.1, can strengthen outside atmospheric pressure, can prevent that natural from leaking from the flange junction of pipeline, even natural gas from leaking from flange junction also can only be in cavity 4 to sense and send out the alarm through natural gas alarm 5, this alarm device not only can prevent that natural gas from leaking from the junction of pipeline flange, in addition can also report to the police in case leak.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A natural gas alarm device, characterized in that: the gas alarm device comprises an upper housing (1) and a lower housing (2) which are detachably connected, wherein an upper sealing cover (3) and a lower sealing cover (6) are respectively connected to opposite inner sides of the upper housing (1) and the lower housing (2), a sealed cavity (4) can be formed between the upper sealing cover (3) and the lower sealing cover (6), and a natural gas alarm (5) is connected to the upper sealing cover (3).

2. A natural gas warning device in accordance with claim 1, characterized in that: the lower housing (2) is connected with an air inlet pipe (2.1), the air inlet pipe (2.1) is communicated with the corresponding sealing cover (3), and the air inlet pipe (2.1) is connected with a one-way valve (2.2).

3. A natural gas warning device in accordance with claim 1, characterized in that: and filling inert gas in the cavity (4).

4. A natural gas warning device in accordance with claim 1, characterized in that: the opposite end surfaces of the upper sealing cover (3) and the lower sealing cover (6) are respectively provided with an arc-shaped groove (3.1).

5. A natural gas warning device in accordance with claim 4, characterized in that: the sealing ring placing grooves (3.2) are formed in the opposite end faces of the upper sealing cover (3) and the lower sealing cover (6), and sealing rings (3.3) are arranged in the sealing ring placing grooves (3.2).