Combustible gas detector with fast alarm and fast recovery

Abstract

The combustible gas detector capable of rapid alarming and rapid recovery of the utility model, including shell and the combustible gas sensor of setting in the shell, still be provided with the containing cavity for limiting combustible gas in the shell, the front end of containing cavity with the air hole on shell intercommunication, the combustible gas sensor sets up in containing cavity, and the waterproof air permeable membrane is arranged between the front end of containing cavity and air hole. The combustible gas detector capable of rapid alarming and rapid recovery of the utility model not only can ensure that the detector when detecting combustible gas, achieve rapid alarming and rapid recovery, but also can meet the protection requirement of IP66 level simultaneously, thereby improve the reliability and service life of product.

Description

Technical Field

[0001] This utility model relates to the field of combustible gas detection, and in particular to a combustible gas detector that can quickly alarm and quickly recover. Background Technology

[0002] The working process of a conventional non-explosion-proof combustible gas detector is as follows: When combustible gas is present in the environment, the gas first needs to penetrate the product casing, enter the detector's interior, and finally contact the gas sensor, causing the sensor to sound an alarm. To ensure smooth gas flow, conventional non-explosion-proof combustible gas detectors typically have holes on the surface of the casing to serve as channels for the combustible gas to flow through. The distribution of these holes needs to be uniform and reasonable to ensure that the combustible gas can form effective convection within the detector, thus allowing for smooth entry and exit. This design allows the detector to quickly sound an alarm when combustible gas is present and rapidly recover once the concentration of combustible gas decreases or completely disappears.

[0003] For the reasons mentioned above, it is very difficult for non-explosion-proof combustible gas detectors to achieve IP66 protection while maintaining rapid alarm and recovery. This means that it is difficult to completely prevent dust from entering and to withstand strong water spray, which greatly limits the widespread application of the detectors. Utility Model Content

[0004] The purpose of this invention is to provide a combustible gas detector that can achieve IP66 level protection and has rapid alarm and recovery capabilities.

[0005] This utility model discloses a combustible gas detector that can quickly alarm and recover, including a housing and a combustible gas sensor disposed inside the housing. The housing also has a containment cavity for confining combustible gas. The front end of the containment cavity is connected to a vent on the housing. The combustible gas sensor is disposed in the containment cavity. A waterproof and breathable membrane is disposed between the front end of the containment cavity and the vent.

[0006] This utility model discloses a combustible gas detector that can quickly alarm and recover. The housing contains a circuit board, and the rear end of the receiving cavity is connected to the circuit board. The rear end of the receiving cavity has a connecting hole, and the combustible gas sensor is connected to the circuit board through a wire in the connecting hole.

[0007] This utility model discloses a combustible gas detector that can quickly alarm and recover, wherein the receiving cavity is truncated conical in shape, and the diameter of the front end of the receiving cavity is larger than the diameter of the rear end of the receiving cavity.

[0008] This utility model discloses a combustible gas detector that can quickly alarm and quickly recover. In this invention, a first annular groove is provided on the front end face of the receiving cavity, and a first sealing ring is provided in the first annular groove. A second annular groove is provided on the rear end face of the receiving cavity, and a second sealing ring is provided in the second annular groove.

[0009] This utility model discloses a combustible gas detector that can quickly alarm and recover. The housing includes a front shell and a rear shell, which are connected together by bolts. The vent is located in the middle of the front shell.

[0010] This utility model of a combustible gas detector with rapid alarm and rapid recovery not only ensures that the detector can quickly alarm and recover when detecting combustible gases, but also meets the IP66 protection requirements, thereby improving the reliability and service life of the product. Attached Figure Description

[0011] Figure 1 This is a front view of the combustible gas detector of this utility model, which can quickly alarm and quickly recover.

[0012] Figure 2 yes Figure 1 AA section view;

[0013] Figure 3 This is an exploded view of the combustible gas detector of this utility model, which can quickly alarm and quickly recover.

[0014] Figure 4 This is a three-dimensional view of the combustible gas detector of this utility model, which can quickly alarm and quickly recover.

[0015] Figure 5 It is a three-dimensional diagram of the cavity. Detailed Implementation

[0016] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the combustible gas detector of this utility model, which can quickly alarm and recover, includes a housing 10 and a combustible gas sensor 1 disposed inside the housing 10. The housing 10 is also provided with a receiving cavity 2 for containing and restricting combustible gas. The front end 41 of the receiving cavity 2 is connected to the vent hole 4 on the housing. The combustible gas sensor 1 is disposed in the receiving cavity. A waterproof and breathable membrane 3 is provided between the front end 41 of the receiving cavity and the vent hole.

[0017] The present invention relates to a combustible gas detector that can quickly alarm and recover, wherein the receiving cavity is truncated cone-shaped, and the diameter of the front end 41 of the receiving cavity is larger than the diameter of the rear end 42 of the receiving cavity.

[0018] This utility model discloses a combustible gas detector that can quickly alarm and recover. The housing contains a circuit board 5, and the rear end of the receiving cavity is connected to the circuit board. The rear end of the receiving cavity is provided with a connecting hole 6. The combustible gas sensor 1 is connected to the circuit board through a wire in the connecting hole.

[0019] Combination Figure 5 As shown, the combustible gas detector of this utility model can quickly alarm and quickly recover. In this invention, a first annular groove 31 is provided on the end face of the front end of the receiving cavity, and a first sealing ring 51 is provided in the first annular groove. A second annular groove 32 is provided on the end face of the rear end of the receiving cavity, and a second sealing ring 52 is provided in the second annular groove.

[0020] The present invention relates to a combustible gas detector that can quickly alarm and recover, wherein the housing includes a front housing 21 and a rear housing 22, which are connected together by bolts 8, and the vent 4 is provided in the middle of the front housing.

[0021] Combustible gas detectors are devices used to detect flammable and explosive gases. They monitor the concentration of specific gases in the environment in real time through sensors and trigger audible and visual alarms based on set thresholds. They are widely used in industrial production safety protection.

[0022] This utility model of a combustible gas detector that can quickly alarm and recover simultaneously meets the following two requirements: it can achieve rapid alarm and recovery; and it meets the IP66 protection level.

[0023] The front shell 21 and the rear shell 22 work together to seal the entire product, and are also provided with vents, through which combustible gases can pass; the waterproof and breathable membrane 3 is breathable but not water-permeable, meeting the IP66 protection level.

[0024] The first sealing ring is used to seal the waterproof and breathable membrane between the membrane and the receiving cavity.

[0025] The containment chamber is used to restrict flammable gases to a specific area.

[0026] The rear shell 22, in conjunction with the front shell, is responsible for the overall sealing of the product. The rear shell 22, in conjunction with the front shell 21, is also responsible for the overall sealing of the product. An annular groove is provided on the mating surfaces of the front shell 21 and the rear shell 22, and a third sealing ring 53 is provided within the groove. Corresponding protrusions that mate with the grooves are provided on the corresponding mating surfaces of the rear shell 22. When the front and rear shells are mated together, the protrusions extend into the grooves, ensuring a tight fit between the front and rear shells, thus enabling the combustible gas detector of this invention to meet the IP66 protection rating.

[0027] The first screw 15 is responsible for fixing the receiving cavity to the front shell, so that the two are pressed together.

[0028] The second sealing ring is responsible for sealing the cavity and the circuit board.

[0029] The combustible gas sensor is located in a small containment cavity.

[0030] The second screw 16 is responsible for fixing the circuit board to the receiving cavity, thus connecting the two together.

[0031] This utility model features a combustible gas detector with rapid alarm and recovery capabilities. It has strong sealing properties and can effectively detect combustible gases to ensure the normal operation of lithium batteries.

[0032] The front shell, waterproof and breathable membrane, housing cavity, and circuit board are tightly fixed together with screws to form a small, sealed cavity. Due to the application of the waterproof and breathable membrane, combustible gases can freely enter and exit within the housing cavity, while moisture and dust are blocked outside the waterproof and breathable membrane.

[0033] This novel combustible gas detector, capable of rapid alarm and recovery, allows combustible gas to enter the housing cavity through the front shell opening and waterproof breathable membrane during operation, ultimately contacting the combustible gas sensor for detection. The combustible gas sensor transmits an electrical signal to the circuit board, triggering an alarm that emits a warning sound and causes the connected display screen to flash or display a corresponding alarm image.

[0034] Because the internal space of the containment cavity is relatively small, the combustible gas detector of this invention, which can quickly alarm and recover, can respond rapidly to changes in combustible gas. When combustible gas enters the containment cavity, the gas concentration will increase rapidly due to the limited space, eventually reaching a certain concentration threshold and triggering the detector alarm. When the combustible gas in the external environment disappears, the structure of the product can also ensure that the gas in the small containment cavity is quickly released and dissipated, thereby allowing the detector to return to normal monitoring status.

[0035] This novel combustible gas detector features rapid alarm and recovery capabilities. The inclusion of a containment cavity enhances its sensitivity and ensures quick return to standby mode when no gas threat is present, preventing false alarms and prolonged alerts. A sealing ring design between the front and rear housings plays a crucial role in ensuring airtightness. A third sealing ring effectively prevents moisture, dust, and other substances from entering the device, thus improving its protective capabilities and ensuring normal operation in various harsh environments. Furthermore, although the front housing has vents, these openings are not directly exposed to the external environment but are protected by a special waterproof and breathable membrane.

[0036] The application of waterproof and breathable membranes greatly enhances the protective performance of products. It allows flammable gases to pass through while effectively preventing liquid water, dust, and other solid particles from entering the equipment. The design principle of this membrane is to ensure airflow while preventing moisture damage to internal components, avoiding short circuits or corrosion of components such as circuit boards due to humidity, thus ensuring long-term, stable operation of the product in humid environments.

[0037] Because the product has a sealing ring between the front and rear shells and is protected by a waterproof and breathable membrane, the entire device can provide excellent protection and meet high protection requirements.

[0038] This utility model of a combustible gas detector with rapid alarm and rapid recovery not only ensures that the detector can quickly alarm and recover when detecting combustible gases, but also meets the IP66 protection requirements, thereby improving the reliability and service life of the product.

[0039] Gas molecules are spaced relatively far apart, allowing them to pass through the pores of the waterproof and breathable membrane during diffusion. Liquid molecules, however, are spaced smaller than the pores, and surface tension prevents them from passing through the membrane, thus achieving a waterproof effect.

[0040] The materials for waterproof and breathable membranes can be: PU film, which is a material with good water pressure resistance; TPU film, which is better than PU film in terms of breathability and water pressure resistance; or EPTFE (polytetrafluoroethylene) membrane, which has excellent waterproof and breathable properties.

[0041] Polytetrafluoroethylene (PTFE) is a synthetic polymer material in which fluorine replaces all hydrogen atoms in polyethylene. Its characteristics include: high temperature resistance—operating temperature up to 250℃; low temperature resistance—good mechanical toughness; even when the temperature drops to -196℃, it can maintain an elongation of 5%; and corrosion resistance—it is inert to most chemicals and solvents and can withstand strong acids and alkalis, water, and various organic solvents.

[0042] This utility model of a combustible gas detector with rapid alarm and rapid recovery adopts a cavity design to accommodate the rapid entry and exit of combustible gases, and at the same time, the whole machine is sealed to meet the IP66 protection level.

[0043] This utility model of a combustible gas detector that can quickly alarm and recover not only ensures sensitive and rapid response, but also ensures that the product can quickly return to standby mode when there is no combustible gas, thus avoiding false alarms and prolonged alarms.

[0044] This utility model's combustible gas detector, which features rapid alarm and recovery capabilities, has an IP66 protection rating, significantly extending the device's lifespan and ensuring greater stability and safety during operation.

[0045] This invention relates to a combustible gas detector with rapid alarm and recovery capabilities. It boasts excellent waterproofing and can withstand various harsh working environments. Whether used outdoors, in industrial settings, or exposed to harsh conditions for extended periods, this combustible gas detector operates stably and reliably, ensuring the safety of users' lives and property.

[0046] Due to its excellent sealing properties, this combustible gas detector, which can quickly alarm and recover, can effectively prevent fine particles from entering the device body, thereby reducing dust and impurities inside the equipment.

[0047] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A combustible gas detector capable of rapid alarm and rapid recovery, characterized in that, The device includes a housing and a combustible gas sensor disposed within the housing. The housing also includes a containment cavity for confining combustible gases. The front end of the containment cavity is connected to a vent on the housing. The combustible gas sensor is disposed within the containment cavity. A waterproof and breathable membrane is provided between the front end of the containment cavity and the vent.

2. The combustible gas detector with rapid alarm and rapid recovery as described in claim 1, characterized in that, A circuit board is provided inside the housing, and the rear end of the receiving cavity is connected to the circuit board. A connecting hole is provided at the rear end of the receiving cavity, and the combustible gas sensor is connected to the circuit board through a wire in the connecting hole.

3. The combustible gas detector with rapid alarm and rapid recovery as described in claim 2, characterized in that, The receiving cavity is truncated cone-shaped, and the diameter of the front end of the receiving cavity is larger than the diameter of the rear end of the receiving cavity.

4. The combustible gas detector with rapid alarm and rapid recovery as described in claim 3, characterized in that, A first annular groove is provided on the front end face of the receiving cavity, and a first sealing ring is provided in the first annular groove. A second annular groove is provided on the rear end face of the receiving cavity, and a second sealing ring is provided in the second annular groove.

5. The combustible gas detector with rapid alarm and rapid recovery as described in claim 4, characterized in that, The housing includes a front shell and a rear shell, which are connected together by bolts, and the vent is located in the middle of the front shell.

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