Urban gas transmission and distribution system operation maintenance detection device

Abstract

An urban gas transmission and distribution system operation maintenance detection device comprises a closed shell and a gas alarm located in the closed shell, a plurality of gas guide cylinders which are separated from one another are arranged on one side in the closed shell, and the gas inlet end of each gas guide cylinder penetrates through the closed shell and is communicated with an electromagnetic valve. An air suction fan is arranged in each air guide cylinder, the outer end of each electromagnetic valve is communicated with a filter head used for air inflow through an air suction telescopic hose, and an exhaust port is formed in the other side of the closed shell. According to the utility model, entering air is filtered through each filter head and then blown to the fuel gas alarm, so that the air enters after being filtered, dust accumulation of the fuel gas alarm can be effectively prevented, the fuel gas alarm in the fuel gas alarm can be ensured to work for a long time, air at a plurality of parts can be actively detected in real time, the detection range is larger and quicker, and the detection efficiency is improved. The leakage detection of the gas pipeline can be effectively avoided, and the use is safer and more reliable.

Description

Technical Field

[0001] This utility model relates to a gas detection device, specifically a device for the operation, maintenance and detection of urban gas transmission and distribution systems. Background Technology

[0002] Gas alarms play a vital role in homes, especially in densely populated cities and towns. They monitor the gas environment in real time, detecting low concentrations of combustible gas through gas sensors. When the gas concentration exceeds a set alarm threshold, the alarm emits an audible and visual alert, prompting family members to take action and effectively prevent further escalation of the leak. Furthermore, modern gas alarms not only alert when someone is present but also automatically shut off the gas valve even when no one is around. This is achieved by controlling the gas pipeline valve to close via control output wiring, preventing accidents such as explosions and fires. This is particularly important for families with elderly members or children, as they may be unsure how to respond in emergencies. Modern home gas alarms can also be linked to solenoid valves to automatically shut off the gas supply and can notify users promptly via SMS or mobile apps, ensuring timely response even when no one is present. Finally, in high-rise buildings, gas leak rescue may be limited by floor height. Installing a gas alarm can promptly notify fire and rescue personnel, buying valuable time and improving rescue efficiency.

[0003] However, current gas alarms are generally installed in relatively fixed locations (such as...). Figure 2 Gas alarms are typically installed near gas transmission and distribution pipelines and valves. However, due to the influence of airflow at the installation location, the gas may not be detected by the alarm in the event of a leak. In other words, current gas alarms are passive detectors, which can lead to delays or missed detections and make it difficult for them to effectively perform their function. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide an operation, maintenance, and testing device for urban gas transmission and distribution systems.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a device for operation, maintenance and testing of urban gas transmission and distribution system, comprising a sealed shell and a gas alarm located inside the sealed shell. On one side of the sealed shell, a plurality of mutually spaced air guide cylinders are respectively arranged. The air inlet end of each air guide cylinder passes through the sealed shell and is connected to a solenoid valve. An air intake fan is arranged inside each air guide cylinder. The outer end of each solenoid valve is connected to a filter head for air intake through an air intake telescopic hose. An exhaust port is arranged on the other side of the sealed shell.

[0006] Furthermore, each gas outlet is equipped with a conical baffle, with the tip of each baffle opening and converging towards the gas sensing part of the gas alarm.

[0007] Furthermore, each filter head has a strap or suction cup fixed to its bottom.

[0008] Furthermore, each solenoid valve is a normally open solenoid valve.

[0009] Furthermore, each solenoid valve corresponds to one intake fan, and when the solenoid valve is closed, the intake fan is closed simultaneously.

[0010] Furthermore, the exterior of the sealed housing is equipped with a switch control panel for controlling the operation of the corresponding solenoid valves and the intake fan.

[0011] With the above settings, the filter head 7 of this utility model can be placed and fixed at different positions on the gas transmission pipeline. It can use one gas alarm to simultaneously detect multiple parts of the gas pipeline. Moreover, it adopts active air supply, which can effectively deliver the air around the detection area to the gas alarm in a timely manner. Current gas alarms are prone to dust accumulation when left outside for a long time, which can cause the sensor to become malfunctioning due to dust accumulation. This utility model filters the incoming air through each filter head before blowing it to the gas alarm. This not only ensures that the air is filtered before entering, which can effectively prevent the gas alarm from accumulating dust and ensure that the internal gas alarm can work for a long time, but also actively detects the air in multiple parts in real time, with a larger and faster detection range. It can effectively avoid missed detections in the gas pipeline and is safer and more reliable to use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 These are physical images of existing technology. Detailed Implementation

[0014] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "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 simplifying the description, 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.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] The following is a detailed description of this embodiment with reference to the accompanying drawings:

[0017] This embodiment provides a device for the operation, maintenance, and testing of an urban gas transmission and distribution system. Please refer to the accompanying drawings in the instruction manual. Figure 1 .

[0018] like Figure 1 As shown, a town gas transmission and distribution system operation, maintenance and testing device includes a sealed housing 1 and a gas alarm 2 located inside the sealed housing 1. Multiple mutually spaced air guide cylinders 3 are respectively arranged on one side of the sealed housing 1. The air inlet end of each air guide cylinder 3 passes through the sealed housing 1 and is respectively connected to a solenoid valve 4. Each air guide cylinder 3 is respectively provided with an air intake fan 5. The outer end of each solenoid valve 4 is respectively connected to a filter head 7 for air intake through an air intake telescopic hose 6. The filter head 7 is a tubular structure with filter sponge, filter screen, etc. inserted inside to filter the incoming air. An exhaust port 8 is provided on the other side of the sealed housing 1.

[0019] In order to make the air entering the filter head 7 blow to the gas alarm 2 more quickly and accurately, each gas duct 3 is provided with a conical guide shroud 9 at its outlet end. The tip of each guide shroud 9 is open and converges towards the gas sensing part of the gas alarm 2.

[0020] To better secure each filter head 9, a strap or suction cup 10 is fixed to the bottom of each filter head 9, which can be used to fix the filter head 9 to the required testing location.

[0021] To facilitate the approximate detection of leak locations, each solenoid valve 4 is a normally open solenoid valve, and each solenoid valve 4 corresponds to one intake fan 5. When the solenoid valve 4 is closed, the intake fan 5 is closed simultaneously. The exterior of the sealed housing 1 is also equipped with a switch control panel 11 for controlling the operation of the corresponding solenoid valve 4 and intake fan 5. When it is necessary to approximate the leak location, first close the other solenoid valves 4 and intake fans 5, leaving only the solenoid valve 4 and intake fan 5 of the location to be tested open. If the gas alarm 2 still alarms, it indicates that there is a leak in the gas delivery pipe, valve, etc. at the filter head 9. If the alarm is cleared, there is no leak at that location. The same operation can be performed on other locations for testing.

[0022] The working principle of this utility model is as follows: During installation, the filter head 7 can be placed and fixed in different locations as needed. During daily operation, each solenoid valve 4 is connected, and the air intake fan 5 is working. By setting the detection points in multiple locations, this utility model can simultaneously detect multiple parts of the gas pipeline using a single gas alarm 2. Furthermore, the active air supply effectively delivers the air around the detection points to the gas alarm 2 in a timely manner. Currently, gas alarms 2 left outdoors for extended periods are prone to dust accumulation, leading to sensor malfunction. This utility model filters the incoming air through each filter head 9 before blowing it to the gas alarm 2. This not only ensures that the air is filtered before entering, effectively preventing dust accumulation in the gas alarm 2 and guaranteeing its long-term operation, but also allows for real-time active detection of air in multiple locations, providing a wider and faster detection range. This effectively avoids missed detections in the gas pipeline, making it safer and more reliable to use.

[0023] Of course, the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for operation, maintenance and testing of urban gas transmission and distribution systems, comprising a sealed housing (1) and a gas alarm (2) located inside the sealed housing (1), characterized in that: Multiple air guide tubes (3) are provided on one side of the sealed shell (1). The air inlet end of each air guide tube (3) passes through the sealed shell (1) and is connected to a solenoid valve (4). Each air guide tube (3) is provided with an air intake fan (5). The outer end of each solenoid valve (4) is connected to a filter head (7) for air intake through an air intake telescopic hose (6). An exhaust port (8) is provided on the other side of the sealed shell (1).

2. The urban gas transmission and distribution system operation, maintenance and testing device according to claim 1, characterized in that: Each gas duct (3) has a conical shroud (9) at its outlet end. The tip of each shroud (9) is open and converges toward the gas sensing part of the gas alarm (2).

3. The urban gas transmission and distribution system operation, maintenance, and testing device according to claim 1, characterized in that: Each filter head (9) has a strap or suction cup (10) fixed to its bottom.

4. The urban gas transmission and distribution system operation, maintenance and testing device according to claim 1, characterized in that: Each solenoid valve (4) is a normally open solenoid valve.

5. The urban gas transmission and distribution system operation, maintenance, and testing device according to claim 1, characterized in that: Each solenoid valve (4) corresponds to one intake fan (5), and when the solenoid valve (4) is closed, the intake fan (5) is closed simultaneously.

6. The urban gas transmission and distribution system operation, maintenance, and testing device according to claim 5, characterized in that: The sealed housing (1) is also equipped with a switch control panel (11) for controlling the operation of the corresponding solenoid valve (4) and the intake fan (5).

Images