Portable gas alarm detection system and detection method

Abstract

The invention discloses a portable gas alarm detection system and method, the portable gas alarm detection system comprises a sleeve head, a hose and a gas cylinder, the gas cylinder is detachably connected with the input end of the hose, and the sleeve head is detachably connected with the output end of the hose; the gas cylinder comprises a cylinder body in which detection gas with a certain concentration is stored and a valve, and the valve is arranged at an outlet of the gas cylinder to control the gas output of the gas cylinder; the input end of the hose is connected with the outlet of the valve; the side wall of the sleeve head is provided with a through hole communicated with the inside and the outside of the sleeve head. The portable gas alarm detection system is easy to operate, convenient to use, low in cost and beneficial to wide application.

Description

Technical Field

[0001] The invention relates to a gas alarm detection device, and in particular to a portable gas alarm detection system and a detection method. Background Art

[0002] A gas alarm is an alarm instrument for detecting toxic gas leaks. When the gas alarm detects that the concentration of toxic gas reaches the explosion or poisoning safety critical point set by the gas alarm, the gas alarm will send out an alarm signal to remind people around to evacuate and ensure life safety.

[0003] In daily life, for example, in home kitchens, restaurant kitchens and other environments, gas alarms are installed to detect toxic gases such as methane and carbon monoxide. However, after these gas alarms have been installed and used for a long time, people cannot know whether they are still in normal working condition. If the gas alarm fails, people cannot repair and replace it in time. In case of gas leakage, it is easy to threaten the safety of life and property. Therefore, during use, these gas alarms need to be tested or detected regularly to determine whether they are in normal working condition. However, in reality, to accurately detect the status of these gas alarms, precise instruments and equipment are required. These devices are often too large, inconvenient to carry and complicated to operate. They require professional detection personnel to operate, and ordinary users usually cannot complete them alone. This makes it impossible for ordinary family individuals or small industrial and commercial individuals to carry out timely detection, and the cost of hiring professional technicians to conduct on-site detection is very expensive. Therefore, it cannot be widely promoted to every family or industrial and commercial individual. Summary of the invention

[0004] The object of the present invention is to provide a portable gas alarm detection system which is simple to operate, convenient to use, low in cost and conducive to wide use.

[0005] Another object of the present invention is to provide a gas alarm detection method which is simple to operate, easy to use and has high detection accuracy.

[0006] In order to achieve the above-mentioned purpose, the portable gas alarm detection system provided by the present invention includes a sleeve, a hose and a gas cylinder, the gas cylinder is detachably connected to the input end of the hose, and the sleeve is detachably connected to the output end of the hose; the gas cylinder includes a bottle body storing a certain concentration of detection gas and a valve, the valve is arranged at the outlet of the gas cylinder to control the gas output of the gas cylinder; the input end of the hose is connected to the outlet of the valve; the side wall of the sleeve is provided with a through hole connecting its interior and exterior.

[0007] Compared with the prior art, the present invention utilizes a gas cylinder that can store detection gas with a certain concentration, and is connected to the sleeve through a hose. Therefore, by pressing the valve of the gas cylinder, the detection gas can flow from the hose to the inside of the sleeve, and at the same time, the sleeve is connected to the detection interface of the gas alarm, so that the detection gas of a certain concentration can be transported to the gas alarm for detection; in addition, since the side wall of the sleeve is provided with a through hole connecting the inside and the outside, as the detection gas is output, the concentration of the detection gas inside the sleeve can still be maintained basically unchanged, thereby effectively ensuring the detection accuracy of the gas alarm. The entire portable gas alarm detection system uses a portable gas cylinder with a small size. It only needs to press the valve and align the sleeve with the gas alarm. It has a simple structure, simple operation, and is easy to use. Ordinary individuals can quickly operate the detection, and the cost is very low, which is conducive to widespread promotion and use.

[0008] Preferably, the inner diameter of the sleeve decreases from the end close to the outlet to the end close to the hose, which is conducive to using one sleeve to match gas alarm detection interfaces of different sizes without changing different sleeves, simplifying the structure of the equipment and reducing costs.

[0009] Preferably, the sleeve has at least two levels of inner diameters from the end close to the outlet to the end close to the hose, and the inner diameter close to the outlet is larger than the inner diameter close to the hose, and the through hole is located on the side wall of the sleeve close to the hose.

[0010] Preferably, the through holes are symmetrically arranged on the side wall of the sleeve.

[0011] Preferably, the inner diameter of the sleeve gradually decreases from the end close to the outlet to the end close to the hose. This is conducive to using one sleeve to match gas alarm detection interfaces of different sizes without changing different sleeves, simplifying the structure of the equipment and reducing costs.

[0012] Specifically, the inner diameter of the end of the sleeve close to the outlet is greater than or equal to 55 mm, and the inner diameter of the end of the sleeve close to the hose is less than or equal to 35 mm.

[0013] Preferably, the sleeve is made of elastic silicone. By utilizing the elastic force of the elastic silicone, the sleeve can be firmly sleeved on the outside of the detection interface to avoid falling off, and does not need to be held by hand, which is more convenient to use.

[0014] A gas alarm detection method comprises the following steps: selecting a portable gas alarm detection system according to the type of detection gas targeted by the gas alarm, wherein the gas cylinder of the portable gas alarm detection system stores the detection gas corresponding to the type of the gas alarm and having a certain concentration; connecting the input end of the hose to the outlet of the valve of the gas cylinder, and connecting the output end of the hose to the end of the sleeve with a smaller diameter; sleeve the sleeve onto the detection interface of the gas alarm, and then keep pressing the valve so that the gas cylinder continuously releases the detection gas into the detection interface through the hose until the gas alarm sounds an alarm and stops, and recording the duration of releasing the detection gas; comparing the alarm reaction time value described when the gas alarm leaves the factory with the recorded duration, if the latter duration is shorter than the former, the gas alarm is qualified; otherwise, it is unqualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the portable gas alarm detection system of the present invention.

[0016] Figure 2 It is a structural diagram of a first embodiment of a cover of a portable gas alarm detection system of the present invention.

[0017] Figure 3 It is a structural diagram of another embodiment of the cover of the portable gas alarm detection system of the present invention.

[0018] Figure 4 It is a flow chart of the gas alarm detection method of the present invention. DETAILED DESCRIPTION

[0019] In order to explain the technical content, structural features and achieved effects of the present invention in detail, the following is a detailed description in conjunction with the implementation methods and the accompanying drawings.

[0020] like Figure 1 As shown, the portable gas alarm detection system 100 of the present invention is used to detect the gas alarm, which includes a sleeve 1, a hose 2 and a gas cylinder 3, the gas cylinder 3 is detachably connected to the input end of the hose 2, and the sleeve 1 is detachably connected to the output end of the hose 2; the gas cylinder 3 includes a bottle body 31 storing a certain concentration of detection gas and a valve 32, the valve 32 is arranged at the outlet of the gas cylinder 3 to control the gas output of the gas cylinder 3; the input end of the hose 2 is connected to the outlet of the valve 32; the side wall of the sleeve 1 is provided with a through hole 1a connecting the inside and the outside; the through hole 1a is symmetrically arranged on the side wall of the sleeve 1.

[0021] like Figure 2As shown, the inner diameter of the sleeve 1 decreases from the end close to the outlet 1b to the end close to the hose 2. The sleeve 1 has at least two levels of inner diameter from the end close to the outlet 1b to the end close to the hose 2, and the inner diameter of the end close to the outlet 1b is larger than the inner diameter of the end close to the hose 2. The through hole 1a is located on the side wall of the sleeve 1 close to the hose 2. This is conducive to using one sleeve 1 to match the detection interface 201 of the gas alarm 200 of different sizes, without the need to replace different sleeves 1, simplifying the structure of the equipment and reducing costs. In the embodiment, the inner diameter of the sleeve 1 has four levels, from the end close to the outlet to the end close to the hose 2, they are the first level 11, the second level 12, the third level 13 and the fourth level 14, and their diameters are 55mm, 45mm, 35mm and 25mm respectively, wherein the first level 11, the second level 12 and the third level 13 are used to be connected with the gas alarm detection interface 201 of different outer diameters, and the side wall of the fourth level 14 is used to open the through hole 1a, so that when the sleeve 1 is connected to the detection interface, a certain space can be reserved for the detection gas of the hose 2 to flow into the sleeve 1, and at the same time, the through hole 1a can be prevented from being blocked by the detection interface 201, so as to ensure the circulation of the air pressure inside and outside the sleeve 1, and then ensure the stability of the concentration of the detection gas inside the sleeve 1. In addition, the diameter of the hose 2 is 0.5mm-0.6mm, and the length is 50mm-100mm.

[0022] For example Figure 3 As shown, in another embodiment, the inner diameter of the sleeve 1' gradually decreases from the end close to the outlet 1b' to the end close to the hose 2, forming a trumpet-shaped structure. Specifically, the inner diameter of the end of the sleeve 1' close to the outlet 1b' is greater than or equal to 55 mm, and the inner diameter of the end of the sleeve 1' close to the hose 2 is less than or equal to 35 mm. The side wall of the sleeve 1 close to the hose 2 is provided with a through hole 1a' connecting the inside and the outside; the through hole 1a' is symmetrically arranged on the side wall of the sleeve 1'. This is conducive to using one sleeve 1' to match gas alarm detection interfaces 201 of different sizes, without the need to replace different sleeves 1', simplifying the structure of the equipment and reducing costs.

[0023] The sleeve 1 is made of elastic silicone. By utilizing the elastic force of the elastic silicone, the sleeve 1 can be firmly sleeved on the outside of the detection interface 201 to avoid falling off, and does not need to be held by hand, which is more convenient to use.

[0024] The portable gas alarm detection system 100 further includes a storage box (not shown), in which the sleeve 1, the hose 2 and the gas cylinder 3 are accommodated. By providing the storage box, the entire portable gas alarm detection system 100 is stored in a smaller volume and is more convenient to carry.

[0025] For example Figure 1 As shown, the outer side wall of the gas cylinder 3 is provided with a handle / handle for holding or a flexible belt 33 or chain for mounting. This makes it convenient for users to carry the gas cylinder 3, making it more convenient to use.

[0026] See also Figure 4 The method for detecting a gas alarm using a portable gas alarm detection system 100 of the present invention comprises the following steps:

[0027] Step S1, determining the type of the gas alarm 200 to be detected, determining the composition of the detection gas targeted by the gas alarm 200, and determining the alarm reaction time value specified when the gas alarm 200 leaves the factory.

[0028] Step S2, according to the type of detection gas targeted by the gas alarm 200, select the corresponding portable gas alarm detection system 100, so that the gas cylinder 3 of the portable gas alarm detection system 100 stores the detection gas corresponding to the type of the gas alarm 200 and having a certain concentration. Before selecting the portable gas alarm detection system 100, detection gases of different types, concentrations or volumes can be pre-filled into the small gas cylinder 3. For example, methane or carbon monoxide can be filled into the small gas cylinder 3 at a certain concentration to form a portable gas alarm detection system 100 that can detect methane or carbon monoxide. The small gas cylinder 3 can use a gas cylinder with a capacity of 250g or 350g. On the premise of meeting one or more detections, it can reduce weight and improve portability. When you know what kind of gas you want to detect, you only need to select the corresponding portable gas alarm detection system 100.

[0029] Step S3, connecting the input end of the hose 2 to the outlet of the valve 32 of the gas cylinder 3, and connecting the output end of the hose 2 to the end of the sleeve 1 with a smaller diameter.

[0030] Step S4, put the sleeve 1 on the detection interface 201 of the gas alarm, and then keep pressing the valve 32 so that the gas cylinder 3 continuously releases the detection gas into the detection interface 201 through the hose 2 until the gas alarm 200 sounds an alarm and stops, and at the same time record the duration of releasing the detection gas.

[0031] Step S5, compare the alarm reaction time value specified when the gas alarm 200 leaves the factory with the recorded time. If the latter is shorter than the former, the gas alarm passes the test; otherwise, it fails. The alarm reaction time value specified when the gas alarm 200 leaves the factory can be found on the housing or instruction manual of the gas alarm 200, or can be collected by collecting the parameters of most gas alarms on the market, making them into a table, and recording them uniformly. When using, you only need to refer to the values ​​in the table.

[0032] Compared with the prior art, the present invention utilizes a gas cylinder 3 that can store a certain concentration of detection gas, and is connected to the sleeve 1 through a hose 2. Therefore, by pressing the valve 32 of the gas cylinder 3, the detection gas can flow from the hose 2 to the inside of the sleeve 1, and the sleeve 1 is sleeved on the detection interface 201 of the gas alarm 200, so that the detection gas of a certain concentration can be delivered to the gas alarm 200 for detection; in addition, since the side wall of the sleeve 1 is provided with a through hole 1a connecting the inside and the outside, as the detection gas is output, the inside of the sleeve 1 can still maintain the concentration of the detection gas basically unchanged, thereby effectively ensuring the detection accuracy of the gas alarm 200. The entire portable gas alarm detection system 100 uses a portable gas cylinder 3, which is small in size. It only needs to press the valve 32 and make the sleeve 1 dock with the gas alarm 200. It has a simple structure, simple operation, and convenient use. Ordinary individuals can quickly operate the detection, and the cost is very low, which is conducive to widespread promotion and use.

[0033] The structure of the valve 32 involved in the portable gas alarm detection system 100 of the present invention is well known to ordinary technicians in the field and will not be described in detail here.

[0034] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A portable gas alarm detection system, characterized in that: It includes a sleeve, a hose and a gas cylinder, the gas cylinder is detachably connected to the input end of the hose, and the sleeve is detachably connected to the output end of the hose; the gas cylinder includes a bottle body storing a certain concentration of detection gas and a valve, the valve is arranged at the outlet of the gas cylinder to control the gas output of the gas cylinder; the input end of the hose is connected to the outlet of the valve; the side wall of the sleeve is provided with a through hole connecting the inside and the outside.

2. The portable gas alarm detection system according to claim 1, characterized in that: The inner diameter of the sleeve decreases from an end close to the outlet to an end close to the hose.

3. The portable gas alarm detection system according to claim 1, characterized in that: The sleeve has at least two levels of inner diameters from one end close to the outlet to one end close to the hose, and the inner diameter of the end close to the outlet is larger than the inner diameter of the end close to the hose. The through hole is located on the side wall of the sleeve close to the hose.

4. The portable gas alarm detection system according to claim 1, characterized in that: The through holes are symmetrically arranged on the side wall of the sleeve.

5. The portable gas alarm detection system according to claim 1, characterized in that: The inner diameter of the sleeve gradually decreases from an end close to the outlet to an end close to the hose.

6. The portable gas alarm detection system according to claim 2 or 5, characterized in that: The inner diameter of the end of the sleeve close to the outlet is greater than or equal to 55 mm, and the inner diameter of the end of the sleeve close to the hose is less than or equal to 35 mm.

7. The portable gas alarm detection system according to claim 1, characterized in that: The sleeve is made of elastic silicone.

8. A gas alarm detection method, characterized in that: The following steps are involved: According to the type of toxic gas targeted by the gas alarm, a portable gas alarm detection system according to any one of claims 1 to 7 is selected, wherein the gas cylinder of the portable gas alarm detection system stores the toxic gas corresponding to the type of the gas alarm and having a certain concentration; Connect the input end of the hose to the outlet of the valve of the gas cylinder, and connect the output end of the hose to the end with a smaller diameter of the sleeve; Put the sleeve onto the detection interface of the gas alarm, then keep pressing the valve so that the gas cylinder continuously releases the toxic gas into the detection interface through the hose until the gas alarm sounds an alarm and stops, and record the duration of releasing the toxic gas; Compare the alarm response time value specified when the gas alarm leaves the factory with the recorded duration. If the latter duration is shorter than the former, the gas alarm has passed the inspection; otherwise, it has failed.

Images