Detector and combustible gas detection system
By designing a detachable air intake component and an inclined detection module, combined with a sealing gasket and an alarm controller, the problems of poor detection accuracy and false alarms caused by oil fume pollution are solved, enabling convenient cleaning of the detector and high-precision detection, and providing dual safety protection.
Patent Information
- Application Number
- CN202422760823.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-12
AI Technical Summary
Existing combustible gas detection systems are easily clogged in environments polluted by oil fumes and dust, resulting in poor detection accuracy. They are also difficult to clean and calibrate, and pose a risk of false alarms and missed alarms.
Design a detachable air intake component and sealing gasket, combined with an inclined detection module and methane detection block, equipped with an alarm controller and LED indicator, and protected by a sliding cover, pressure plate and waterproof and breathable membrane to achieve convenient cleaning and accurate detection.
It enables convenient cleaning and high-precision detection of the detector, reduces the intrusion of oil fumes and dust, ensures stable operation and accurate alarm of the system, and provides dual security.
Smart Images
Figure CN223485959U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of combustible gas detection, specifically a detector and a combustible gas detection system. Background Technology
[0002] Natural gas is widely used in restaurants and other small catering establishments, and leaks can easily lead to accidents. Installing a combustible gas detection system can effectively detect gas leaks and prevent accidents. These establishments are characterized by large emissions and diverse pollutants, making the detector cover and detection chamber easily contaminated by fumes and dust. However, the covers of existing industrial and commercial point-type detectors cannot be removed, preventing users from cleaning the cover and detection chamber. This leads to clogged vents on the cover due to fumes and dust, and an accumulation of impurities and pollutants in the detection chamber, resulting in poor accuracy of the combustible gas detection system. When natural gas leaks, combustible gas detection systems are prone to false alarms and missed alarms. Furthermore, existing combustible gas detection systems are difficult to calibrate. Utility Model Content
[0003] The technical problem to be solved by this invention is how to clean the inside of the detector.
[0004] This utility model solves the above-mentioned technical problems through the following technical means:
[0005] A detector includes a front housing (11), a rear cover plate (12), a front cover plate (13), an air intake component (14), a detection module (15), and a main control module (16); the front housing (11) is hollow, the rear cover plate (12) is provided on the back of the front housing (11), the front cover plate (13) is provided on the top of the front of the front housing (11), the air intake component (14) is detachably connected to the bottom corner of the front housing (11), the detection module (15) is provided inside the front housing (11) near the air intake component (14), and the main control module (16) is provided inside the front housing (11), and the main control module (16) is electrically connected to the detection module (15).
[0006] Beneficial effects: Because the air intake component is detachable from the front housing, it is not necessary to disassemble the housing. Simply remove the air intake component to expose the detector's inner cavity for wiping and cleaning.
[0007] Furthermore, a sealing gasket (113) is fixed to the interior of the detection module (15) adjacent to the front housing (11).
[0008] Beneficial effects: The sealing gasket is used to seal against water and dust, preventing water and oil fumes in the air from entering the detector and damaging electronic components.
[0009] Furthermore, the air intake component (14) includes a sliding cover (141), a pressure plate (142), a waterproof and breathable membrane (143), and a metal mesh (144). The sliding cover (141) is slidably connected to the bottom corner of the front housing (11). Multiple vent holes (144) are provided through the sliding cover (141). The inner surface of the sliding cover (141) is fixed with the metal mesh (144), the waterproof and breathable membrane (143), and the pressure plate (142) from the outside to the inside.
[0010] Beneficial effects: Through the setting of sliding cover, pressure plate, waterproof and breathable membrane and metal mesh, the pressure plate is used to press and fix the metal mesh and waterproof and breathable membrane. The metal mesh can play a certain filtering role, blocking external impurities and particles and preventing them from directly contacting the detector module, thereby protecting the long-term stable operation of the detector. The waterproof and breathable membrane is used to prevent kitchen water vapor from entering the detector and at the same time maintain the circulation and exchange of gas.
[0011] Furthermore, the detection module (15) is designed to be placed at an angle.
[0012] Furthermore, the detection module (15) is tilted at 45° toward the bottom corner of the front housing (11).
[0013] Beneficial effects: The tilted placement design of the detection module can effectively reduce the intrusion of kitchen fumes and dust, while making it easier for ground personnel to observe the accumulation of fumes and dust on the air intake components.
[0014] Furthermore, the detection module (15) is recessed, and a through-beam laser lamp (151) is fixed on each of the left and right sides of the recessed surface of the detection module (15). The protrusion of the methane detection block (5) is made of transparent material. The recessed part of the detection module (15) can accommodate the protrusion of the methane detection block (5) for verification and detection of combustible gases.
[0015] Beneficial effects: By setting the shape and material of the detection module and methane detection block, when it is necessary to check the detection module, the protruding part of the methane detection block is inserted into the recessed part, and the concentration value is read, which can determine whether the detection module is accurate.
[0016] Furthermore, the top two sides of the front housing (11) are provided with wire fixing ports (114), and a gland head (18) is fixed in the wire fixing port (114).
[0017] Beneficial effects: The gland design secures and seals the connected cables, preventing oil fumes and dust from entering the detector and meeting the requirements of the detector's operating environment.
[0018] Furthermore, an LED indicator is fixed on the main control module (16), and a light guide column (17) is fixed on the front housing (11) near the LED indicator.
[0019] Beneficial effect: By setting up the light guide column, the light from the LED indicator can be transmitted to the front housing to display the relevant status.
[0020] This utility model also discloses a combustible gas detection system including the detector described in any of the above technical solutions, and further includes an alarm controller. The main control module (16) can collect and process the data and other information of the detection module (15) and send the signal to the alarm controller via a cable.
[0021] Beneficial effects: Through the settings of the alarm controller, the alarm controller receives the methane gas concentration signal, processes it and displays the gas concentration value. When the methane gas concentration reaches or exceeds the set value, the alarm controller emits audible and visual alarm signals, and the alarm is simultaneously displayed by the LED indicator on the main control module.
[0022] Furthermore, the alarm controller is electrically connected to the exhaust fan and solenoid valve via a relay.
[0023] Beneficial effects: By setting up relays, the relays switch on and off according to threshold states, thereby controlling exhaust fans, solenoid valves, etc. Attached Figure Description
[0024] Figure 1 This is a front view of the detector in the combustible gas detection system according to Embodiment 1 of this utility model;
[0025] Figure 2 for Figure 1 AA section view;
[0026] Figure 3 This is a perspective view of the methane detection gas block in Embodiment 2 of this utility model. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. 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 protection scope of this utility model.
[0028] Example 1
[0029] like Figure 1As shown, this embodiment provides a combustible gas detection system, including a detector 1, an alarm controller (not shown), an exhaust fan (not shown), and a solenoid valve (not shown).
[0030] like Figure 1 As shown, detector 1 is electrically connected to the alarm controller, and the alarm controller is electrically connected to the exhaust fan and solenoid valve via a relay.
[0031] like Figure 1 , Figure 2 As shown, detector 1 includes a front housing 11, a rear cover 12, a front cover 13, an air intake component 14, a detection module 15, a main control module 16, a light guide column 17, and a gland 18. The front housing 11 is hollow, and the interior of the front housing 11 is a detection air chamber. The rear cover 12 is fixed to the back of the front housing 11 by a cross-head screw 111, and the front cover 13 is fixed to the top of the front of the front housing 11 by a countersunk screw 112. The air intake component 14 is detachably connected to the bottom corner of the front housing 11. The interior of the front housing 11... A detection module 15 is fixed near the air intake component 14. A sealing gasket 113 is fixed adjacent to the front housing 11 to the detection module 15 for sealing against water and dust, preventing water and oil fumes in the air from entering the detector 1 and damaging the electronic components. The front housing 11, rear cover 12, and front cover 13 are made of PC+ABS material, also known as engineering plastic alloy, which has excellent heat and weather resistance, dimensional stability, and impact resistance. Compared with the traditional aluminum alloy housing, it is lighter, easier to install, and more cost-effective.
[0032] like Figure 1 , Figure 2As shown, the detection module 15 is recessed, with a through-beam laser lamp 151 fixed on each of the left and right sides of the recessed surface. The detection module 15 employs tunable laser gas absorption spectroscopy (TD-LAS) technology, using an through-beam laser emission and reception structure. Through the special absorption of methane by the laser, combined with a stable temperature control algorithm, concentration inversion algorithm, and temperature compensation algorithm, it achieves accurate measurement of methane concentration in the air. The measurement algorithms related to the detection module 15 are existing technologies. The detection module 15 is designed with an angled placement, which effectively reduces the intrusion of kitchen fumes and dust, while facilitating observation of the accumulation of fumes and dust on the air intake component 14 by ground personnel. In this embodiment, the detection module 15 is angled at 45° towards the bottom corner of the front housing 11. A main control module 16 is fixed inside the front housing 11, electrically connected to the detection module 15. The main control module 16 has an RS485 cable and an LED indicator light fixed on it. The front housing 11 is located near the LED... A light guide post 17 is fixed at the indicator light to transmit the light from the LED indicator light to the front housing 11 to display the relevant status. The main control module 16 can collect and process the data and other information of the detection module 15, and send the signal to the alarm controller via wired RS485 communication. The relevant acquisition and processing algorithm of the main control module 16 is existing technology. The top two sides of the front housing 11 have through-holes for fixing wires 114. The wire fixing holes 114 are fixed with glands 18. The glands 18 are used to fasten and seal the connected cables to prevent oil fumes and dust from entering the detector 1, thus meeting the requirements of the detector 1's operating environment. The alarm controller receives the methane gas concentration signal, processes it, and displays the gas concentration value. When the methane gas concentration reaches or exceeds the set value, the alarm controller emits audible and visual alarm signals, and the alarm is simultaneously displayed by the LED indicator light on the main control module 16. At the same time, the relay switches according to the threshold state, thereby controlling the exhaust fan, solenoid valve, etc.
[0033] As the title suggests, Figure 2As shown, the air intake component 14 includes a sliding cover 141, a pressure plate 142, a waterproof and breathable membrane 143, and a metal mesh 144. The sliding cover 141 is slidably connected to the bottom corner of the front housing 11. Multiple vent holes 144 are provided through the sliding cover 141. An indicator mark 145 is fixed on one side of the outer surface of the sliding cover 141 to indicate the opening and sliding direction of the sliding cover 141. The inner surface of the sliding cover 141 is fixed with the metal mesh 144, the waterproof and breathable membrane 143, and the pressure plate 142 in sequence from the outside to the inside. The pressure plate 142 is made of metal and is used to press and fix the metal mesh 144 and the waterproof and breathable membrane 143. The metal mesh 144 is fixed inside the sliding cover 141. On the surface, the metal mesh 144 can play a certain filtering role, blocking external impurities and particles and preventing them from directly contacting the detection module 15, thereby protecting the long-term stable operation of the detector 1. The metal mesh 144 is made of double-sided metal, which can increase the surface area of the detector 1, thereby improving the adsorption capacity for gas, enabling the detector 1 to detect gas leaks more quickly and accurately. At the same time, the double-sided metal mesh can also enhance the structural strength of the detector 1, making it more durable. The waterproof and breathable membrane 143 is fixed on the metal mesh 144 to prevent kitchen water vapor from entering the interior of the detector 1, while maintaining the flow and exchange of gas.
[0034] In operation, when methane gas leaks, the gas diffuses into the detection chamber through the intake component 14. The methane gas then passes through the detection module 15, which converts the gas concentration information into an electrical signal proportional to the gas concentration. This electrical signal is then transmitted to the main control module 16, and subsequently to the alarm controller via the RS485 communication interface. The alarm controller receives the methane gas concentration signal, processes it, and displays the gas concentration value. When the methane gas concentration reaches or exceeds the set value, the alarm controller emits audible and visual alarm signals, and the alarm is simultaneously displayed by LED indicators. At the same time, the relay switches on and off according to the threshold state, thereby controlling the exhaust fan, solenoid valve, etc. When a gas leak occurs, not only can the danger be intuitively felt, but it can also be monitored remotely, more effectively preventing the occurrence of danger and achieving dual protection.
[0035] Example 2
[0036] like Figure 2 , Figure 3 As shown, Figure 3The image shows a methane detection block 5, which is filled with methane gas of a standard concentration. One side of the methane detection block 5 is protruding, and the protrusion is adapted to the recess of the detection module 15. The protrusion of the methane detection block 5 is made of transparent material. The protrusion of the methane detection block 5 is snapped into the recess of the detection module 15. The through-beam laser lights 151 on the left and right sides of the detection module 15 shine through the standard concentration of methane gas inside the methane detection block 5 to check the accuracy of the combustible gas detection system.
[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A detector, characterized in that, It includes a front housing (11), a rear cover (12), a front cover (13), an air intake component (14), a detection module (15), and a main control module (16); The front housing (11) is hollow. A rear cover plate (12) is provided on the back of the front housing (11). A front cover plate (13) is provided on the top of the front of the front housing (11). An air intake component (14) is detachably connected to the bottom corner of the front housing (11). A detection module (15) is provided inside the front housing (11) near the air intake component (14). A main control module (16) is provided inside the front housing (11). The main control module (16) is electrically connected to the detection module (15).
2. The detector according to claim 1, characterized in that: A sealing gasket (113) is fixed to the interior of the detection module (15) adjacent to the front housing (11).
3. A detector according to claim 1, characterized in that: The air intake component (14) includes a sliding cover (141), a pressure plate (142), a waterproof and breathable membrane (143), and a metal mesh (144). The sliding cover (141) is slidably connected to the bottom corner of the front housing (11). Multiple vent holes (144) are provided through the sliding cover (141). The inner surface of the sliding cover (141) is fixed with the metal mesh (144), the waterproof and breathable membrane (143), and the pressure plate (142) from the outside to the inside.
4. A detector according to claim 1, characterized in that: The detection module (15) is designed to be placed at an angle.
5. A detector according to claim 4, characterized in that: The detection module (15) is tilted at 45° toward the bottom corner of the front housing (11).
6. A detector according to claim 1, characterized in that: The detection module (15) is recessed, and a through-beam laser lamp (151) is fixed on each of the left and right sides of the recessed surface of the detection module (15). The protrusion of the methane detection block (5) is made of transparent material. The recessed part of the detection module (15) can accommodate the protrusion of the methane detection block (5) for verification detection of combustible gases.
7. A detector according to claim 1, characterized in that: The top two sides of the front housing (11) are provided with wire fixing ports (114), and a gland head (18) is fixed in the wire fixing port (114).
8. A detector according to claim 1, characterized in that: An LED indicator light is fixed on the main control module (16), and a light guide column (17) is fixed on the front housing (11) near the LED indicator light.
9. A combustible gas detection system comprising the detector according to any one of claims 1-8, characterized in that: It also includes an alarm controller. The main control module (16) can collect and process data and other information from the detection module (15) and send signals to the alarm controller via cable.
10. A combustible gas detection system according to claim 9, characterized in that: The alarm controller is electrically connected to the exhaust fan and solenoid valve via a relay.