A gas leak alarm

Abstract

The utility model discloses a gas leak alarm in the field of gas leak alarm, comprising an alarm body, the alarm body is provided with an air inlet, the air inlet is provided with an air inlet pipe, and the air inlet pipe is provided with a Tesla valve structure inside, so that the gas can quickly enter the alarm body. The utility model solves the problem that the existing alarm is installed in a poorly ventilated or closed space, and the gas leak alarm cannot immediately contact the leaked gas of sufficient concentration, resulting in a delay in the alarm. The Tesla valve structure of the utility model can make the gas obtain acceleration due to the flow pressure when passing through the air inlet pipe, and can effectively guide the gas to quickly and stably enter the alarm body, so that the sensor of the alarm can contact the leaked gas more quickly, and then quickly send out an alarm signal, thereby ensuring that the alarm can respond quickly when the gas leaks.

Description

Technical Field

[0001] The utility model relates to the technical field of gas leakage alarm, in particular to a gas leakage alarm. Background Art

[0002] The gas leak alarm device is a device used to detect gas safety. It detects combustible gases in the surrounding environment through gas sensors, including but not limited to natural gas, liquefied petroleum gas, etc. When these combustible gases leak and accumulate to a certain concentration, the alarm device will be activated immediately, and it will issue a high-decibel alarm or flashing warning lights to remind people to pay attention and take corresponding safety measures.

[0003] In order to ensure the effective operation of the gas leak alarm, it is usually recommended to install it in an area with good air circulation, such as a kitchen vent or near a window. This is because when the air is circulating, any gas that may leak can be quickly blown away and thus quickly detected by the alarm. However, if the monitored location is not ventilated or poorly ventilated, the diffusion rate of the gas after the gas leak will be greatly slowed down. In this case, the leaked gas can only slowly contact the alarm in a flooding manner, which can easily cause the sensor to be unable to quickly contact enough leaking gas to trigger the alarm, resulting in a delay in the alarm, or even the alarm may not be triggered, thereby increasing potential safety risks.

[0004] The above defects need to be solved urgently. Utility Model Content

[0005] In order to solve the problem that the existing alarm is installed in a poorly ventilated or closed space, the gas leak alarm cannot immediately contact the leaked gas of sufficient concentration, resulting in a delay in alarm, the utility model provides a gas leak alarm.

[0006] The technical solution of the utility model is as follows:

[0007] A gas leak alarm comprises an alarm body, wherein the alarm body is provided with an air inlet, an air inlet pipe is arranged at the air inlet, and a Tesla valve structure is arranged inside the air inlet pipe to facilitate the gas to quickly enter the alarm body.

[0008] According to the utility model of the above scheme, the diameter of the air intake pipe decreases from the end of the air intake pipe away from the air intake port to the end of the air intake pipe close to the air intake port.

[0009] According to the above scheme of the utility model, the Tesla valve structure includes at least two groups of interconnected rapid air intake units, and the rapid air intake unit includes a first air intake part and a second air intake part. The first air intake part and the second air intake part are staggered, and a rapid air intake passage is formed between the first air intake part and the second air intake part.

[0010] According to the above scheme of the utility model, the first air intake part includes a first curved air plate and a first main air plate connected to the first curved air plate, and the second air intake part includes a second curved air plate and a second main air plate connected to the second curved air plate, the first main air plate and the second main air plate both form a certain angle with the axis of the air intake pipe, and the inclination directions of the first main air plate and the second main air plate are opposite.

[0011] According to the utility model of the above solution, the rapid air intake duct is arranged vertically.

[0012] According to the above-mentioned solution of the utility model, at least a part of the air intake pipe is inserted into the air intake port, and an annular groove is provided on the outer wall of the air intake pipe, and the alarm body extends into the annular groove.

[0013] According to the utility model of the above scheme, a plurality of first limiting parts are arranged in the annular groove, and a plurality of second limiting parts are arranged on the inner wall of the air inlet, and the first limiting parts cooperate with the second limiting parts to limit the direction of the air inlet pipe.

[0014] According to the utility model of the above scheme, a plurality of hanging holes for convenient hanging are arranged on the outer wall of the alarm body.

[0015] According to the utility model of the above scheme, a circuit board and a detection sensor are arranged inside the alarm body, the detection sensor is connected to the circuit board, and the position of the detection sensor corresponds to the air inlet.

[0016] According to the utility model of the above solution, a speaker is further arranged inside the alarm body, and the speaker is connected to the circuit board.

[0017] The utility model according to the above scheme has the following beneficial effects:

[0018] In the above-mentioned gas leak alarm, a Tesla valve structure is arranged inside the air intake pipe. When the alarm is installed in a poorly ventilated or closed space, the Tesla valve structure can make the gas gain acceleration due to the flow pressure when passing through the air intake pipe, and can effectively guide the gas to enter the alarm body quickly and stably, so that the alarm sensor can contact the leaking gas more quickly, and then quickly send out an alarm signal, thereby ensuring that the alarm can respond quickly when the gas leaks. In addition, the design of the Tesla valve structure can effectively prevent gas backflow while ensuring that the gas quickly enters the alarm body, ensuring the stability and accuracy of the alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is one of the structural schematic diagrams of the utility model;

[0020] Figure 2 This is the second structural diagram of the utility model;

[0021] Figure 3 This is one of the split diagrams of the utility model;

[0022] Figure 4 This is the second split diagram of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure when the gas passes through the intake pipe.

[0024] In the figure, 1, alarm body; 11, air inlet; 12, second limiter; 13, circuit board; 14, detection sensor; 15, speaker; 16, hanging hole; 17, display screen; 18, indicator light;

[0025] 2. Intake pipe; 21. Tesla valve structure; 211. First intake part; 2111. First arc-shaped air plate; 2112. First main air plate; 212. Second intake part; 2121. Second arc-shaped air plate; 2122. Second main air plate; 213. Quick intake duct; 22. Annular groove; 23. First limit part. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] like Figure 1 , Figure 2 , Figure 4As shown, the utility model provides a gas leak alarm, including an alarm body 1, the alarm body 1 is provided with an air inlet 11, an air inlet pipe 2 is provided at the air inlet 11, and a Tesla valve structure 21 is provided inside the air inlet pipe 2. When the alarm is installed in a poorly ventilated or closed space, the Tesla valve structure 21 can make the gas pass through the air inlet pipe 2 to obtain acceleration due to the flow pressure, and can effectively guide the gas to enter the alarm body 1 quickly and stably, so that the alarm sensor contacts the leaking gas more quickly, and then quickly sends out an alarm signal, thereby ensuring that the alarm can respond quickly when the gas leaks. In addition, the design of the Tesla valve structure 21 can effectively prevent the gas from flowing back while ensuring that the gas quickly enters the alarm body 1, thereby ensuring the stability and accuracy of the alarm.

[0028] like Figure 4 , Figure 5 As shown, in this embodiment, the Tesla valve structure 21 includes at least two groups of interconnected rapid air intake units, and the rapid air intake units include a first air intake portion 211 and a second air intake portion 212. The first air intake portion 211 and the second air intake portion 212 are staggered, and a rapid air intake duct 213 is formed between the first air intake portion 211 and the second air intake portion 212. Along the air flow direction of the intake pipe 2, the rapid air intake duct 213 can effectively guide the gas to pass through, and form an obstruction in the opposite direction, thereby achieving a one-way flow effect.

[0029] like Figure 4 , Figure 5As shown, specifically, the first air inlet 211 includes a first arc-shaped air plate 2111 and a first main air plate 2112 connected to the first arc-shaped air plate 2111, and the second air inlet 212 includes a second arc-shaped air plate 2121 and a second main air plate 2122 connected to the second arc-shaped air plate 2121. The first main air plate 2112 and the second main air plate 2122 both form a certain angle with the axis of the air inlet pipe 2, and the first main air plate 2112 and the second main air plate 2122 are inclined in opposite directions. When the gas flows through the fast air inlet 213, the first main air plate 2112 and the second main air plate 2122 are staggered, which can apply pressure to the gas entering the fast air inlet 213, play an accelerating role, so that the gas quickly enters the alarm body 1, and improves the response speed of the alarm. That is, when the gas flows through the fast air inlet 213, due to the staggered design and tilt angle of the first main air plate 2112 and the second main air plate 2122, the gas can be effectively accelerated and directed to the alarm body 1. In the opposite direction, that is, if the gas attempts to flow out of the alarm body 1 and pass through the Tesla valve structure 21, the gas will be blocked by the first arc-shaped air plate 2111 and the second arc-shaped air plate 2121 and cannot flow out smoothly, which not only achieves the effect of one-way flow, but also improves the response speed and sensitivity of the alarm to gas leakage by accelerating the incoming gas. In addition, compared with the existing Tesla valve, the utility model lacks a blocking block between the first air inlet 211 and the second air inlet 212, which facilitates the gas to quickly enter the alarm package through the air inlet pipe 2, avoiding the phenomenon that the blocking block hinders the gas from entering the alarm body 1 due to the small diameter of the air inlet pipe 2, and further increases the gas intake.

[0030] like Figure 4 , Figure 5 As shown, in the present embodiment, the rapid air inlet duct 213 is vertically arranged, and the diameter of the air inlet pipe 2 decreases from large to small from the end of the air inlet pipe 2 away from the air inlet port 11 to the end thereof close to the air inlet port 11, that is, the shape of the air inlet pipe 2 is a trumpet 15. The air will be gradually compressed and accelerated when flowing through the air inlet duct, which helps to make the airflow more concentrated and orderly, thereby improving the air intake efficiency and allowing the airflow to quickly enter the alarm body 1.

[0031] like Figures 3 to 5 As shown, in this embodiment, at least a portion of the air intake pipe 2 is inserted into the air intake port 11, ensuring a stable connection and sealing between the air intake pipe 2 and the air intake port 11, and an annular groove 22 is provided on the outer wall of the air intake pipe 2, and the alarm body 1 extends into the annular groove 22. The inserted connection between the air intake pipe 2 and the air intake port 11 and the close fit between the alarm body 1 and the annular groove 22 ensure the stability of the entire structure and reduce the possibility of loosening or falling off due to vibration or external force.

[0032] like Figure 3As shown, in this embodiment, a plurality of first limiting portions 23 are arranged in the annular groove 22, and a plurality of second limiting portions 12 are arranged on the inner wall of the air inlet 11. The first limiting portions 23 and the second limiting portions 12 cooperate with each other to limit the direction of the air inlet pipe 2, ensure the stable connection between the air inlet pipe 2 and the air inlet 11, and improve the reliability and safety of the structure. In addition, the first limiting portion 23 is located on the annular groove 22, and can be a raised structure or other mechanism that can prevent the air inlet pipe 2 from rotating. When the air inlet pipe 2 is inserted into the air inlet 11, the first limiting portion 23 will contact and interact with the corresponding second limiting portion 12, thereby limiting the rotation of the air inlet pipe 2, ensuring that the air inlet pipe 2 always remains in a predetermined direction and position, and avoiding the change of direction caused by looseness or external force. In addition, in other optional embodiments, the air inlet pipe 2 and the alarm body 1 can be designed to rotate, so that the air inlet pipe 2 can rotate around the air inlet 11, thereby adjusting the direction of the air inlet pipe 2.

[0033] like Figure 4 , Figure 5 As shown, in this embodiment, the alarm body 1 is provided with a circuit board 13, a detection sensor 14, and a speaker 15. The circuit board 13 is the core control part of the alarm, which is responsible for receiving, processing and outputting signals. The detection sensor 14 is the sensing part of the alarm, which is responsible for real-time monitoring of the gas concentration in the environment. The detection sensor 14 is connected to the circuit board 13, and the detection sensor 14 corresponds to the position of the air inlet 11 to ensure that the gas concentration entering the alarm can be accurately sensed. Once the detection sensor 14 detects an abnormal situation, such as the gas concentration exceeds the safety threshold, the detection sensor 14 will immediately convert this information into an electrical signal and transmit it to the circuit board 13 through the connecting line. In addition, the speaker 15 is connected to the circuit board 13. When the circuit board 13 triggers the alarm mechanism, the speaker 15 will emit a loud alarm to further remind and warn personnel. In addition, at least a part of the outer wall of the alarm body 1 is recessed inward, and the recessed part corresponds to the position of the speaker 15, and the recessed part is provided with a sound outlet hole and a cavity single hole, so that the alarm sound is louder and the distance is longer. Of course, in other optional embodiments, the speaker 15 can be replaced by a buzzer. In actual design, the structure of the alarm body 1 for emitting an alarm sound can be designed according to actual needs.

[0034] It should be noted that the detection of gas concentration by the detection sensor 14 and the sounding of the alarm by the speaker 15 are prior arts, and the present invention does not make any improvements to this part, so the principles and processes thereof will not be described in detail.

[0035] like Figure 2As shown, in this embodiment, a plurality of hanging holes 16 are provided on the outer wall of the alarm body 1 for convenient hanging. The hanging holes 16 are usually designed as holes or annular notches for inserting various hanging tools or hooks, such as screws, hooks, ropes, etc., so that users can flexibly hang the alarm on the wall, ceiling or other locations that need to be monitored according to their needs and scenarios. Through the hanging holes 16, users can easily fix the alarm at the desired location without complicated installation steps or additional installation tools, and the wall-mounted installation can save ground space, which is particularly suitable for use in environments with limited space, such as warehouses, workshops, basements, etc.

[0036] like Figure 4 , Figure 5 As shown, in this embodiment, a display screen 17 is also provided on the alarm body 1, and the display screen 17 is connected to the circuit board 13, and is used to display the gas concentration in the air. In addition, a plurality of indicator lights 18 are also provided on the alarm body 1, and the plurality of indicator lights 18 are located above the display screen 17, and are used to indicate the working state of the alarm. It should be noted that the display screen 17 displays the gas concentration in the air and the indicator lights 18 indicate the working state of the alarm, which is a prior art, and the present utility model also makes improvements to this part, so its principle and process will not be described in detail.

[0037] When the utility model is in use, due to the different densities of the various gases being monitored, some of them are greater than the density of air, for example, the main component of liquefied petroleum gas is propane, which is heavier than air. When propane leaks, it will sink. Therefore, the alarm for monitoring liquefied gas is required to be installed 30 cm from the ground, and the air inlet pipe 2 is set downward, so that the gas can quickly enter the detection sensor 14 of the alarm body 1 for detection. If the propane in the air exceeds the set concentration threshold, the horn 15 will sound an alarm, thereby attracting people's attention. In addition, the density of the gas being monitored is less than the density of air. For example, the main component of natural gas is methane, which is lighter than air. When methane leaks, it will float upward. Therefore, the alarm for monitoring natural gas is required to be installed 30 cm from the ceiling, and the air inlet pipe 2 is set upward, so that the gas can quickly enter the detection sensor 14 of the alarm body 1 for detection. If the methane in the air exceeds the set concentration threshold, the horn 15 will sound an alarm, thereby attracting people's attention.

[0038] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0039] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A gas leak alarm, comprising an alarm body, wherein the alarm body is provided with an air inlet, characterized in that: An air intake pipe is arranged at the air intake port, and a Tesla valve structure is arranged inside the air intake pipe to facilitate the gas to quickly enter the alarm body.

2. The gas leak alarm according to claim 1, characterized in that: The diameter of the air intake pipe decreases from one end of the air intake pipe away from the air intake port to one end of the air intake pipe close to the air intake port.

3. The gas leak alarm according to claim 1, characterized in that: The Tesla valve structure includes at least two groups of interconnected rapid air intake units, wherein the rapid air intake unit includes a first air intake portion and a second air intake portion, wherein the first air intake portion and the second air intake portion are staggered, and a rapid air intake passage is formed between the first air intake portion and the second air intake portion.

4. The gas leak alarm according to claim 3, characterized in that: The first air intake portion includes a first curved air plate and a first main air plate connected to the first curved air plate, and the second air intake portion includes a second curved air plate and a second main air plate connected to the second curved air plate. The first main air plate and the second main air plate both form a certain angle with the axis of the air intake pipe, and the inclination directions of the first main air plate and the second main air plate are opposite.

5. The gas leak alarm according to claim 3, characterized in that: The rapid air intake duct is arranged vertically.

6. The gas leak alarm according to claim 1, characterized in that: At least a portion of the air intake pipe is inserted into the air intake port, and an annular groove is provided on the outer wall of the air intake pipe, and the alarm body extends into the annular groove.

7. The gas leak alarm according to claim 6, characterized in that: A plurality of first limiting portions are arranged in the annular groove, and a plurality of second limiting portions are arranged on the inner wall of the air inlet. The first limiting portions cooperate with the second limiting portions to limit the direction of the air inlet pipe.

8. The gas leak alarm according to claim 1, characterized in that: A plurality of hanging holes for convenient hanging are arranged on the outer wall of the alarm body.

9. The gas leak alarm according to claim 1, characterized in that: A circuit board and a detection sensor are arranged inside the alarm body. The detection sensor is connected to the circuit board, and the position of the detection sensor corresponds to the air inlet.

10. The gas leak alarm according to claim 9, characterized in that: A speaker is also arranged inside the alarm body, and the speaker is connected to the circuit board.

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