Combustible gas detector capable of rapidly alarming and recovering

Abstract

The combustible gas detector capable of rapidly alarming and rapidly recovering comprises a shell and a combustible gas sensor arranged in the shell, a containing cavity used for limiting combustible gas is further arranged in the shell, the front end of the containing cavity is communicated with an air hole in the shell, the combustible gas sensor is arranged in the containing cavity, and the combustible gas sensor is arranged in the containing cavity. A waterproof breathable film is arranged between the front end of the containing cavity and the breathable hole. According to the combustible gas detector capable of rapidly alarming and rapidly recovering, rapid alarming and rapid recovering can be ensured when the detector detects combustible gas, and the protection requirement of the IP66 level can be met at the same time, so that the reliability of a product is improved, and the service life of the product is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of combustible gas detection, in particular to a combustible gas detector capable of rapid alarm and rapid recovery. Background Art

[0002] The operating process of a conventional non-explosion-proof combustible gas detector is as follows: When combustible gas appears in the environment, the gas first penetrates the outer casing, enters the detector, and ultimately contacts the gas sensor, causing it to sound an alarm. To ensure smooth gas flow, conventional non-explosion-proof combustible gas detectors typically have holes in the outer casing to serve as channels for the combustible gas. The holes must be evenly and rationally distributed to ensure effective convection of the combustible gas within the detector, allowing it to flow in and out smoothly. This design allows the detector to quickly sound an alarm when combustible gas is present and quickly recover once the combustible gas concentration decreases or disappears completely.

[0003] Because of the above reasons, it is very difficult for non-explosion-proof combustible gas detectors to achieve IP66 level protection while maintaining rapid alarm and recovery. In other words, it is difficult to completely prevent dust from entering and difficult to withstand strong water spray, which greatly limits the widespread application of detectors. Summary of the Invention

[0004] The purpose of the present invention is to provide a combustible gas detector which can achieve IP66 level protection and can quickly alarm and recover.

[0005] The combustible gas detector of the present invention, which can quickly alarm and quickly recover, includes a shell and a combustible gas sensor arranged in the shell. The shell is also provided with a accommodating cavity for limiting combustible gas. The front end of the accommodating cavity is connected to the air vent on the shell. The combustible gas sensor is arranged in the accommodating cavity. A waterproof and breathable membrane is provided between the front end of the accommodating cavity and the air vent.

[0006] The combustible gas detector of the present invention can quickly alarm and quickly recover, wherein a circuit board is arranged in the shell, the rear end of the accommodating cavity is connected to the circuit board, and the rear end of the accommodating cavity is provided with a connecting hole, and the combustible gas sensor is connected to the circuit board through the wire in the connecting hole.

[0007] The combustible gas detector capable of rapid alarm and rapid recovery of the present invention is characterized in that the accommodating cavity is in the shape of a truncated cone, and the diameter of the front end of the accommodating cavity is greater than the diameter of the rear end of the accommodating cavity.

[0008] The combustible gas detector of the present invention can quickly alarm and quickly recover, wherein a first annular groove is provided on the end face of the front end of the accommodating cavity, a first sealing ring is provided in the first annular groove, and a second annular groove is provided on the end face of the rear end of the accommodating cavity, a second sealing ring is provided in the second annular groove.

[0009] The combustible gas detector capable of rapid alarm and rapid recovery of the present invention comprises a shell comprising a front shell and a rear shell, the front shell and the rear shell are connected together by bolts, and the air vent is provided in the middle of the front shell.

[0010] The combustible gas detector capable of rapid alarm and rapid recovery of the present invention can not only ensure rapid alarm and rapid recovery when detecting combustible gas, but also meet the IP66 level protection requirements at the same time, thereby improving the reliability and service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front view of the combustible gas detector capable of rapid alarm and rapid recovery according to the present invention;

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

[0013] Figure 3 This is an exploded view of the combustible gas detector capable of rapid alarm and rapid recovery according to the present invention;

[0014] Figure 4 It is a three-dimensional diagram of the combustible gas detector capable of rapid alarm and rapid recovery of the present invention;

[0015] Figure 5 It is a three-dimensional diagram of the containing cavity. DETAILED DESCRIPTION

[0016] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the combustible gas detector capable of rapid alarm and rapid recovery of the present invention comprises a shell 10 and a combustible gas sensor 1 arranged in the shell 10, the shell 10 is further provided with a accommodating cavity 2 for accommodating and limiting combustible gas, the front end 41 of the accommodating cavity 2 is communicated with the air vent 4 on the shell, the combustible gas sensor 1 is arranged in the accommodating cavity, and a waterproof breathable membrane 3 is provided between the front end 41 of the accommodating cavity and the air vent.

[0017] The combustible gas detector capable of rapid alarm and rapid recovery of the present invention has a truncated cone-shaped accommodating cavity, and a diameter of a front end 41 of the accommodating cavity is greater than a diameter of a rear end 42 of the accommodating cavity.

[0018] The combustible gas detector of the present invention can quickly alarm and quickly recover, wherein a circuit board 5 is provided in the shell, the rear end of the accommodating cavity is connected to the circuit board, and a connecting hole 6 is provided at the rear end of the accommodating cavity. The combustible gas sensor 1 is connected to the circuit board through the wire in the connecting hole.

[0019] Combine Figure 5 As shown, the combustible gas detector of the present invention can quickly alarm and quickly recover, wherein a first annular groove 31 is provided on the end face of the front end of the accommodating cavity, a first sealing ring 51 is provided in the first annular groove, and a second annular groove 32 is provided on the end face of the rear end of the accommodating cavity, a second sealing ring 52 is provided in the second annular groove.

[0020] The combustible gas detector capable of rapid alarm and rapid recovery of the present invention comprises a shell including a front shell 21 and a rear shell 22, the front shell and the rear shell are connected together by bolts 8, and the air vent 4 is provided in the middle of the front shell.

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

[0022] The combustible gas detector capable of rapid alarm and rapid recovery of the present invention can simultaneously meet the following two requirements: being able to realize rapid alarm and recovery; and meeting the IP66 protection grade.

[0023] The front shell 21 and the rear shell 22 cooperate to seal the entire product. At the same time, air holes are provided so that combustible gas can pass through the air holes. The waterproof breathable membrane 3 is breathable but not water-permeable, meeting the IP66 protection level.

[0024] The first sealing ring is used for sealing between the waterproof and breathable membrane and the accommodating cavity.

[0025] The containing cavity is used to limit the combustible gas to this range.

[0026] The rear shell 22 is used in conjunction with the front shell 21 to seal the entire product. The rear shell 22 and the front shell 21 are used in conjunction with each other to seal the entire product. An annular groove is provided on the mating surfaces of the front shell 21 and the rear shell 22. A third sealing ring 53 is provided within the groove. The corresponding mating surface of the rear shell 22 is provided with a ridge that corresponds to the groove. When the front shell and the rear shell are mated and connected together, the ridge extends into the groove, tightly fitting the front shell and the rear shell, enabling the combustible gas detector of the present invention to meet the IP66 protection level.

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

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

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

[0030] The second screw 16 is responsible for fixing the circuit board to the accommodating cavity so that the two are connected together.

[0031] The combustible gas detector capable of rapid alarm and rapid recovery of the present invention has strong sealing performance and can effectively detect combustible gas to ensure the normal operation of the lithium battery.

[0032] The front housing, waterproof breathable membrane, housing, and circuit board are tightly fastened together with screws to form a small, sealed cavity. Thanks to the waterproof breathable membrane, combustible gases can flow freely in and out of the housing, while water vapor and dust are blocked outside.

[0033] During operation, the fast-alarm and fast-recovery combustible gas detector of the present invention allows combustible gas to pass through the holes in the front housing and through the waterproof, breathable membrane into the housing cavity, ultimately coming into contact with the combustible gas sensor, thereby detecting the combustible gas. The combustible gas sensor transmits an electrical signal to the circuit board, which then triggers an alarm, emitting a warning sound and causing the connected display screen to flash or display a corresponding alarm image.

[0034] Because the internal space of the containment chamber is relatively small, the fast-alarm and fast-recovery combustible gas detector of the present invention can quickly respond to changes in combustible gas. Once combustible gas enters the containment chamber, its concentration rapidly increases due to the confines of the chamber, eventually reaching a certain concentration threshold and triggering the detector's alarm. When the combustible gas in the external environment disappears, the product's structure ensures that the gas within the small containment chamber is quickly released and dissipated, allowing the detector to return to normal monitoring.

[0035] The combustible gas detector capable of rapid alarm and rapid recovery of the present invention improves the sensitivity of the reaction by providing a containing cavity, and also ensures that the product can quickly return to the standby state when there is no gas threat, thereby avoiding false alarms and long-term alarms. A sealing ring design is adopted between the front shell and the rear shell, and this design plays an important role in terms of sealing. The third sealing ring can effectively prevent moisture, dust and other substances from entering the interior of the device, thereby improving the protection capability of the device and ensuring its normal operation in various harsh environments. In addition, although there are air holes on the front shell, these holes are not directly exposed to the external environment, but are specially protected by a waterproof and breathable membrane.

[0036] The use of a waterproof, breathable membrane significantly enhances the product's protective properties. It allows combustible gases to pass through, but effectively prevents liquid water, dust, and other solid particles from entering the device. This membrane is designed to ensure air circulation while preventing moisture from invading internal components, preventing short circuits or corrosion of components like circuit boards. This ensures long-term, stable operation in humid environments.

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

[0038] The combustible gas detector capable of rapid alarm and rapid recovery of the present invention can not only ensure rapid alarm and rapid recovery when detecting combustible gas, but also meet the IP66 level protection requirements at the same time, thereby improving the reliability and service life of the product.

[0039] The distance between gas molecules is large, so they can pass through the pores of the waterproof breathable membrane during diffusion. However, the distance between liquid molecules is smaller than the pores, and under the action of surface tension, liquid molecules cannot pass through the waterproof breathable membrane, which plays a waterproof role.

[0040] The material of the waterproof and breathable membrane: It can be PU film, which is a material with good water pressure resistance; it can also be TPU film, which has improved breathability and water pressure resistance compared to PU film; it can also be EPTFE (polytetrafluoroethylene) membrane, which has excellent waterproof and breathable properties.

[0041] Polytetrafluoroethylene is a synthetic polymer material that uses fluorine to replace all hydrogen atoms in polyethylene. Its characteristics are: high temperature resistance - the operating temperature reaches 250°C; low temperature resistance - it has good mechanical toughness; even if the temperature drops to -196°C, it can maintain an elongation of 5%; corrosion resistance - it is inert to most chemicals and solvents, and can withstand strong acids and alkalis, water and various organic solvents.

[0042] The combustible gas detector capable of rapid alarm and rapid recovery of the present invention adopts a design of a containing cavity to meet the requirements of rapid inflow and outflow of combustible gas, and at the same time the entire device is sealed to meet the IP66 protection grade.

[0043] The combustible gas detector capable of rapid alarm and rapid recovery of the present invention not only ensures sensitive reaction and rapid response, but also ensures that the product can quickly return to the standby state when there is no combustible gas, thereby avoiding false alarms and long-term alarms.

[0044] The combustible gas detector capable of rapid alarm and rapid recovery of the present invention has an IP66 protection grade, greatly increases the service life of the device, and is more stable and safe during operation.

[0045] The combustible gas detector that can quickly alarm and quickly recover of the present invention has excellent waterproof capabilities and can cope with various harsh working environments. Whether it is used outdoors or in industrial fields, or is exposed to harsh environments for a long time, the combustible gas detector that can quickly alarm and quickly recover of the present invention can operate stably and reliably to ensure the safety of users' lives and property.

[0046] Due to its good sealing performance, the combustible gas detector capable of rapid alarm and rapid recovery of the present invention can effectively prevent fine particles from entering the body, thereby reducing dust and impurities accumulated inside the device.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A combustible gas detector capable of rapid alarm and rapid recovery, characterized in that: It includes a shell and a combustible gas sensor arranged in the shell. The shell is also provided with a accommodating cavity for limiting combustible gas. The front end of the accommodating cavity is connected to the air vent on the shell. The combustible gas sensor is arranged in the accommodating cavity. A waterproof and breathable membrane is provided between the front end of the accommodating cavity and the air vent.

2. The combustible gas detector capable of rapid alarm and rapid recovery according to claim 1, characterized in that: A circuit board is provided in the shell, the rear end of the accommodating cavity is connected to the circuit board, and a connecting hole is provided at the rear end of the accommodating cavity. The combustible gas sensor is connected to the circuit board through a wire in the connecting hole.

3. The combustible gas detector capable of rapid alarm and rapid recovery according to claim 2, characterized in that: The accommodating cavity is in a truncated cone shape, and the diameter of the front end of the accommodating cavity is larger than the diameter of the rear end of the accommodating cavity.

4. The combustible gas detector capable of rapid alarm and rapid recovery according to claim 3, characterized in that: A first annular groove is provided on the front end surface of the accommodating cavity, a first sealing ring is provided in the first annular groove, a second annular groove is provided on the rear end surface of the accommodating cavity, a second sealing ring is provided in the second annular groove.

5. The combustible gas detector capable of rapid alarm and rapid recovery according to claim 4, characterized in that: The shell comprises a front shell and a rear shell, which are connected together by bolts, and the air vent is arranged in the middle of the front shell.

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