A new modular structure for a combustible gas monitor
By using a modular structure design and a flexible connector module, the problem of inconvenient disassembly of the sensor and monitor is solved, enabling convenient disassembly and waterproofing, thus improving the maintainability and safety of the combustible gas monitor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JILIN PROVINCE BAIRUISHENG SCI & TECH DEV
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-23
AI Technical Summary
The existing combustible gas detectors have sensors that are not easy to disassemble from the detector, making maintenance and replacement difficult. Furthermore, the accumulation of gas due to corrosion and leakage may lead to explosions.
The device adopts a modular structure design, and the monitor body and sensor module can be detachably connected through the union module. By using the threaded connection and union parts, combined with the waterproof rubber ring, it can achieve convenient disassembly and waterproof function.
It enables convenient disassembly and installation of sensor modules, avoids tangled connecting wires, enhances the maintainability and safety of the equipment, and reduces the risk of gas leaks.
Smart Images

Figure CN224399378U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of combustible gas monitors, and specifically relates to a novel modular structure for combustible gas monitors. Background Technology
[0002] Combustible gas detectors are key devices for monitoring the concentration of combustible gases. Most urban residential gas is supplied via gas pipelines. Gas companies deliver gas to various residential areas through pipelines. Gas valve wells are important ancillary facilities in gas pipeline networks, primarily housing gas pipelines, various valves, and expansion joints. Valve wells are generally small, enclosed, and humid environments. Corrosion and expansion of valve bodies, flanges, and other components within the well can lead to localized gas leaks, easily causing gas accumulation and even explosions. Therefore, there is an urgent market demand for a combustible gas leak detector capable of operating 24 / 7 and uploading data to a cloud platform.
[0003] In existing technologies, most combustible gas detectors are integrated into one unit, making it inconvenient to disassemble the sensor and the detector. Utility Model Content
[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a novel modular structure for a combustible gas monitor to solve the problems mentioned in the background art.
[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:
[0006] A novel modular structure for a combustible gas monitor includes a monitor body, a sensor module connected to the lower side of the monitor body, and a detachable connector module connecting the monitor body and the sensor module. The detachable connector module allows for a detachable connection between the monitor body and the sensor module. The sensor module is a liquid level sensor module and a methane sensor module.
[0007] Further specified, the liquid level sensor module is connected to the monitor body via a threaded connection, and the methane sensor module is connected to the monitor body via a union module.
[0008] Further specifying, the union module includes a threaded interface located on the lower side of the monitor body, the lower outer side of the threaded interface is an external thread, and the external thread of the threaded interface is threadedly connected to a union.
[0009] Further specified, the union is annular, and the lower side of the thread of the union is provided with an inwardly contracting limiting step. A union pressure ring is provided between the upper side of the limiting step and the lower side of the threaded interface. The inner side of the union pressure ring is provided with an internal thread, and the outer side of the union pressure ring is slidably connected to the union.
[0010] Furthermore, the internal thread of the live-fitting pressure ring is threadedly connected to the threaded connector of the methane sensor module.
[0011] Furthermore, a waterproof rubber ring is provided between the lower side of the threaded interface and the union pressure ring.
[0012] Furthermore, the outer side of the union is provided with a wrench groove.
[0013] Compared with the prior art, the present invention has the following advantages:
[0014] This utility model has a mounting nut on the rear cover plate, which allows it to be connected to the warning post, thus enabling the monitoring device to be installed inside the warning post and adapting to different usage scenarios.
[0015] This utility model connects the main chamber and the sensor module through a union module. At the same time, the cooperation between the union and the union pressure ring enables the installation of a waterproof rubber ring between the threaded interface and the union pressure ring, and all components are easy to disassemble.
[0016] This utility model is ingeniously designed so that when the live connector is connected to the threaded interface, the sensor module will not be rotated, thus preventing the connecting wires from getting tangled. At the same time, it achieves a detachable connection between the monitor body and the sensor module. Attached Figure Description
[0017] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;
[0018] Figure 1 This is a schematic diagram of the novel modular structure of the combustible gas monitor of this utility model;
[0019] Figure 2 This is a rear view of the novel modular structure of the present invention used in a combustible gas monitor;
[0020] Figure 3 This is a cross-sectional view of the live joint structure of this utility model;
[0021] Figure 4 This is a schematic diagram showing the connection between the sensor module and the live joint structure of this utility model;
[0022] Figure 5 This is a schematic diagram showing the connection between the sensor module and the connector of this utility model;
[0023] Figure 6 This is a structural schematic diagram of the second state of the wrench groove of the live joint of this utility model;
[0024] Figure 7 This is a structural schematic diagram of the third state of the wrench groove of the live joint of this utility model;
[0025] The symbols for the main components are explained below:
[0026] The monitor body consists of: 1. Sensor module 2. Liquid level sensor module 21. Methane sensor module 22. Union module 3. Threaded interface 31. Union 32. Limiting step 321. Union pressure ring 33. Waterproof rubber ring 34. Detailed Implementation
[0027] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and 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 protection scope of this utility model.
[0028] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains; the terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that an element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.
[0029] like Figure 1-7 As shown, a novel modular structure for a combustible gas monitor includes a monitor body 1, a sensor module 2 connected to the lower side of the monitor body 1, and a flexible connector module 3 connecting the monitor body 1 and the sensor module 2. The flexible connector module 3 is used to detachably connect the monitor body 1 and the sensor module 2. The sensor module 2 consists of a liquid level sensor module 21 and a methane sensor module 22.
[0030] In this embodiment, the sensor module 2 and the monitoring instrument body 1 are connected by a flexible connector module 3. The flexible connector module 3 facilitates the disassembly and reassembly of the monitoring instrument body 1 and the sensor module 2. The liquid level sensor module 21 is used to monitor the water level, and the methane sensor module 22 is used to monitor for gas leaks. The methane sensor module 22 and the liquid level sensor module 21 are placed at the bottom of the main chamber 1, so that signals can be received earlier when there is a gas leak or the water level exceeds the limit.
[0031] Reference Figure 1 The liquid level sensor module 21 is connected to the monitoring instrument body 1 via a thread, and the methane sensor module 22 is connected to the monitoring instrument body 1 via a union module 3. In this embodiment, the union module 3 is used to connect the methane sensor module 22 to the lower side of the main chamber 1, thereby enabling a detachable connection between the methane sensor module 22 and the union module 3.
[0032] Reference Figure 3 The union module 3 includes a threaded interface 31 located on the lower side of the monitor body 1. The lower outer side of the threaded interface 31 has an external thread, and the external thread of the threaded interface 31 is threaded to the union 32. In this embodiment, the threaded interface 31 is provided on the lower side of the main chamber 1 for connection with the methane sensor module 22. The external thread of the threaded interface 31 is located below the internal thread and is connected to the union 32.
[0033] Reference Figure 4 and Figure 5 The union 32 is annular, and a limiting step 321 that contracts inward is provided on the lower side of the threaded part of the union 32. A union pressure ring 33 is provided between the upper side of the limiting step 321 and the lower side of the threaded interface 31. The inner side of the union pressure ring 33 is provided with an internal thread, and the outer side of the union pressure ring 33 is slidably connected to the union 32. In this embodiment, the limiting step 321 is used to limit the union pressure ring 33, so that the union pressure ring 33 is located above the limiting step 321. When only the union 32 is rotated, the union pressure ring 33 can rotate relative to the union 32.
[0034] Reference Figure 3 and 4 The internal thread of the union pressure ring 33 is threadedly connected to the threaded connector of the methane sensor module 22. In this embodiment, the union pressure ring 33 and the methane sensor module 22 are connected by rotating them above the methane sensor 22.
[0035] Reference Figure 4A waterproof rubber ring 34 is provided between the lower side of the threaded interface 31 and the union pressure ring 33. In this embodiment, the waterproof rubber ring 34 is used to prevent water from entering the main chamber 1 through the threaded interface 31 and affecting the interior of the monitoring instrument body 1; when the union pressure ring 33 is tightened on the methane sensor module 22, it simultaneously limits the union 32. When the union 32 is tightened on the main chamber 1, it simultaneously drives the methane sensor module 5, the union pressure ring 33, and the waterproof rubber ring 34 to engage with the main chamber 1.
[0036] Reference Figure 5 , Figure 6 , Figure 7 A wrench groove is provided on the outer side of the union 32. In this embodiment, the wrench groove is used to facilitate the rotation of the union by a wrench, and the wrench groove is not limited to one shape.
[0037] Working principle: When connecting the methane sensor module 22 to the monitor body 1, first, fit the union 32 onto the threaded head of the methane sensor module 22. Then, insert the union pressure ring 33 into the union 32, with the union 32 positioned above the limiting step 321 and the upper part of the union pressure ring 33 facing upwards. Finally, screw the union pressure ring 33 onto the methane sensor module 22. (Refer to...) Figure 4 Because the lower part of the union 32 is slidably connected to the union pressure ring 83, and the union 32 limits the movement of the union pressure ring, the union 32 rotates relative to the union pressure ring 83 when it rotates. The union pressure ring 33 remains stationary under the friction of the waterproof rubber ring 34. Then, by rotating the union 32 to the position of the threaded interface 31, the union 32 is connected to the threaded interface 31, thereby connecting the methane sensor module 22 to the monitor body 1. During the connection, the connecting wire of the methane sensor module 22 will not be tangled.
[0038] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.
[0039] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A novel modular structure for a combustible gas detector, comprising a detector body (1), characterized in that: A sensor module (2) is connected to the lower side of the monitoring instrument body (1). A flexible connector module (3) is connected between the monitoring instrument body (1) and the sensor module (2). The flexible connector module (3) is used to make the monitoring instrument body (1) and the sensor module (2) detachably connected. The sensor module (2) is a liquid level sensor module (21) and a methane sensor module (22).
2. The novel modular structure for a combustible gas detector according to claim 1, characterized in that: The liquid level sensor module (21) is connected to the monitor body (1) by a thread, and the methane sensor module (22) is connected to the monitor body (1) by a live connector module (3).
3. The novel modular structure for a combustible gas monitor according to claim 1, characterized in that: The live connector module (3) includes a threaded interface (31) located on the lower side of the monitor body (1). The lower outer side of the threaded interface (31) is an external thread, and the external thread of the threaded interface (31) is threaded to a live connector (32).
4. The novel modular structure for a combustible gas monitor according to claim 3, characterized in that: The union (32) is annular. The lower side of the thread of the union (32) is provided with a limiting step (321) that contracts inward. A union pressure ring (33) is provided between the upper side of the limiting step (321) and the lower side of the threaded interface (31). The inner side of the union pressure ring (33) is provided with an internal thread. The outer side of the union pressure ring (33) is slidably connected to the union (32).
5. The novel modular structure for a combustible gas detector according to claim 4, characterized in that: The internal thread of the live-fitting pressure ring (33) is threadedly connected to the threaded connector of the methane sensor module (22).
6. The novel modular structure for a combustible gas detector according to claim 5, characterized in that: A waterproof rubber ring (34) is provided between the lower side of the threaded interface (31) and the live joint pressure ring (33).
7. The novel modular structure for a combustible gas monitor according to claim 4, characterized in that: The outer side of the live joint (32) is provided with a wrench groove.