Lifesaving pack air tightness detection equipment

Abstract

The utility model provides a lifesaving pack air tightness detection device, and relates to the technical field of detection devices. Comprising a negative pressure device, a detector device, a prompt device, a pressure sensor and an air pipe, and the negative pressure device is suitable for pumping out gas in the lifesaving bag through the air pipe to enable the interior of the lifesaving bag to reach a preset negative pressure value; the detector device is connected to the negative pressure device so as to detect the variable quantity of the negative pressure value of the life-saving bag in the pressure maintaining process; the prompting device is connected with the pressure sensor so as to give an alarm when the negative pressure value variation in the life-saving bag reaches a preset value; the air pipe is connected with the negative pressure device and the lifesaving bag, and a rubber layer is arranged at the end of an air outlet of the air pipe so as to be tightly attached to a detection opening of the lifesaving bag to prevent air from leaking through a gap between the detection opening and the air pipe. According to the utility model, the detection efficiency can be improved, and the damage to products in the detection process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, and particularly relates to an airtightness detection device for a life-saving bag. Background Art

[0002] In recent years, a drowning automatic life-saving device mainly composed of an airbag and a gas generator has emerged in front of the public, and its characteristics of being miniaturized and portable have been recognized by the market. Such products generally include: a connecting belt, an airbag, a control circuit, a high-pressure gas cylinder, and an installation box; the installation box forms one or more sealed cavities through upper and lower outer shells and a sealing ring, and is provided with a detection hole and a breathable film. This sealed cavity is used to place electronic components, and electronic components are most afraid of liquid erosion. Therefore, the airtightness of the product's sealed cavity is particularly crucial.

[0003] During the assembly process of the product to be detected, the sealing rings between the cavities often have problems such as fine dust, distortion, and detachment, resulting in unqualified airtightness. It is impossible to judge the sealing effect by using the conventional manual visual inspection method; the water immersion method has low efficiency, and water seepage in the inner cavity will directly damage important components such as the control circuit and make it unusable. Summary of the Utility Model

[0004] The utility model discloses an airtightness detection device for a life-saving bag, aiming to improve the problems of poor efficiency and easy damage to the life-saving bag in the existing detection methods for life-saving bags.

[0005] The utility model adopts the following scheme:

[0006] The present application provides an airtightness detection device for a life-saving bag, including a negative pressure device, a detector device, a prompt device, and an air pipe. The negative pressure device is adapted to extract the gas in the life-saving bag through the air pipe to make the inside of the life-saving bag reach a preset negative pressure value; the detector device is connected to the negative pressure device to detect the change amount of the negative pressure value during the pressure holding process of the life-saving bag; the prompt device is connected to the pressure sensor to give an alarm prompt when the change amount of the negative pressure value in the life-saving bag reaches a preset value; the air pipe connects the negative pressure device and the life-saving bag, and a rubber layer is provided at the end of the air outlet of the air pipe to closely adhere to the detection port of the life-saving bag to prevent gas from leaking through the gap between the detection port and the air pipe.

[0007] Further, the detector device includes a pressure sensor, and the pressure sensor is adapted to sense the pressure change of the air pipe to monitor the pressure in the life-saving bag.

[0008] Further, the negative pressure device is an air pump for pumping air from the inner cavity of the life-saving bag.

[0009] Further, it further includes a display device, and the display device is connected to the pressure sensor to display the pressure inside the life-saving kit in real time.

[0010] Further, a convex ring structure is formed at the end of the rubber layer, and the convex ring structure is adapted to fit around the outside of the detection port of the life-saving kit after being inserted into the life-saving kit to improve the sealing effect at the detection port.

[0011] Beneficial effects:

[0012] In this solution, the airtightness of the sealed cavity inside the life-saving kit is detected by using the negative pressure detection method. Specifically, the negative pressure device is set to pump air out of the sealed cavity of the life-saving kit to a predetermined negative pressure state, and then the pressure is maintained. During the pressure maintenance process, the change amount of the negative pressure value inside the life-saving kit is detected by setting the pressure sensor. When the change amount is less than the preset value, the airtightness is qualified; when the change amount is greater than the preset value, it indicates that there is an airtightness problem with the life-saving kit, and at this time, an alarm can be given through the prompting device; further, a rubber layer is provided at the end of the air pipe to keep the seal between the hole wall of the detection port on the life-saving kit when inserted into the life-saving kit, preventing detection errors caused by air leakage at the detection port. This solution is detected by negative pressure, which is more accurate and safe compared to inflation detection, can prevent the problem of water seepage and damage to the internal components of the life-saving kit due to insufficient airtightness compared to the water bubble method, and has higher efficiency. Description of the drawings

[0013] Figure 1 is a schematic structural diagram of a life-saving kit airtightness detection device according to an embodiment of the present invention;

[0014] Figure 2 is a schematic internal structure diagram of a life-saving kit airtightness detection device according to an embodiment of the present invention;

[0015] Figure 3 is a schematic cross-sectional structural diagram of a life-saving kit sealed box body suitable for detection by a life-saving kit airtightness detection device according to an embodiment of the present invention;

[0016] Figure 4 is a schematic working process diagram of a life-saving kit airtightness detection device according to an embodiment of the present invention;

[0017] Reference numerals: negative pressure device 1, detector device 2, prompting device 3, air pipe 4, display device 5, rubber layer 6, convex ring structure 7, sealed cavity 8, detection port 81, breathable membrane 82, sealing ring 83. Specific embodiments

[0018] Combined with Figures 1 to 3As shown in the figure, this embodiment provides a life-saving package airtightness detection device, which includes a negative pressure device 1, a detector device 2, a prompting device 3, and an air pipe 4. The negative pressure device 1 is adapted to extract the gas inside the life-saving package through the air pipe 4 to make the inside of the life-saving package reach a preset negative pressure value; the detector device 2 is connected to the negative pressure device 1 to detect the change amount of the negative pressure value during the pressure holding process of the life-saving package; the prompting device 3 is connected to the pressure sensor to give an alarm prompt when the change amount of the negative pressure value inside the life-saving package reaches a preset value; the air pipe 4 connects the negative pressure device 1 and the life-saving package, and a rubber layer 6 is provided at the end of the air outlet of the air pipe 4 to closely adhere to the detection port 81 of the life-saving package to prevent gas from leaking through the gap between the detection port 81 and the air pipe 4.

[0019] In this embodiment, the detection device can be integrated in a housing. A display screen device 5 is provided on the housing for displaying values such as detection time, pressure, quantity, etc. A control system is provided inside the housing for controlling the operation and shutdown of the negative pressure device 1. The negative pressure device 1 can adopt an air pump, which is used to pump air into the sealed cavity of the life-saving package through the air pipe 4 to make the inside of the sealing ring of the life-saving package in a negative pressure state.

[0020] Combined with Figure 3 As shown in the figure, the life-saving package described in this embodiment is an existing product, generally including a connecting belt, an airbag, a control circuit, a high-pressure gas cylinder, and an installation box; the user is connected through the connecting belt, the airbag is supplied with gas by the high-pressure gas cylinder, and the control circuit is arranged in the installation box to prevent water ingress. The installation box is divided into upper and lower shells, which cooperate with a sealing ring 83 to form one or more sealed cavities 8, and a detection port 81 and a breathable membrane 82 are provided on the installation box. This sealed cavity 8 is used to place electronic components, etc., to prevent water ingress. The detection port 81 is for the air pipe 4 to extend into, and the breathable membrane 82 is used to prevent water from flowing in through the detection port 81.

[0021] Combined with Figures 1 to 2 As shown in the figure, the detector device 2 adopts an existing airtightness detection device, which includes a pressure sensor. The pressure sensor is used to detect the negative pressure value inside the life-saving package in real time. The detector device 2 calculates and identifies the change of the negative pressure value during the pressure holding process and generates a pressure drop value. This pressure drop value is compared with a standard preset value. When the pressure drop value (i.e., the change value) is greater than the preset value, it indicates that the air leakage in the sealed cavity 8 is large, and the airtightness of this life-saving package is unqualified. When the pressure drop value is less than the preset value, it means that the airtightness is good and meets the requirements. Here, the detector device 2 is connected to a prompting device 3, which is used to give a prompt through the prompting device 3 when the life-saving package is detected as qualified or unqualified. For example, the prompting device 3 includes a red light and a green light. When the product airtightness is qualified, the green light will light up to remind the operator. When the airtightness is unqualified, the red light will light up to play an alarm role.

[0022] The trachea 4 is used to connect the negative pressure device 1 to the detection port 81 of the life-saving kit. To prevent leakage at the detection port 81 from affecting the detection effect, in this application, a rubber layer 6 is provided at the end of the trachea 4. When the trachea 4 is inserted into the detection port 81, the rubber layer 6 tightly adheres to the pore wall of the detection port 81 of the life-saving kit to seal the pore wall, thereby further improving the detection effect and preventing the detection result from being affected due to air leakage through the gap between the trachea 4 and the detection port 81 of the life-saving kit.

[0023] As shown in Figure 1 In a preferred embodiment, a convex ring structure 7 is formed at the end of the rubber layer 6. The convex ring structure 7 is adapted to adhere to the outer periphery of the detection port 81 of the life-saving kit after being inserted to improve the sealing effect at the detection port 81. Here, the convex ring structure 7 is made of rubber. After the trachea 4 is inserted, the convex ring structure 7 is stuck at the detection port 81. Since a negative pressure is formed in the sealed cavity 8, a force towards the inside of the life-saving kit box body will be generated on the end of the trachea 4, so that the convex ring structure 7 is squeezed inward to be clamped at the detection port 81, thereby closing the gap between the outside and the detection port 81 to prevent air leakage from occurring at the connection between the detection port 81 and the trachea 4 and affecting the detection effect.

[0024] As shown in Figure 4 During operation, when the switch is turned on to start pumping air, when the preset negative pressure value is reached, pressure holding starts. If the preset negative pressure value cannot be reached within the preset time, a red light will give a prompt; after the pressure holding time ends, testing starts. The difference between the current negative pressure value and the preset negative pressure value is tested. If the difference meets the requirements, a green light will give a qualified prompt and display the current negative pressure value or the negative pressure value difference. If the difference does not meet the requirements, a red light will give an unqualified prompt and display the current negative pressure value or the negative pressure value difference; after the test is completed, exhaust air is carried out to relieve the negative pressure state of the sealed cavity.

[0025] Through the solution of this embodiment, detection is carried out by using the negative pressure method, which is not easy to damage the structure of the life-saving kit, and the pressure value of the negative pressure can be adjusted as needed to detect the leakage situation under different negative pressure states to improve the detection range; by setting the prompting device 3 in cooperation with the detector device 2, the detection result can be fed back to improve the detection efficiency; by providing the rubber layer 6 and the convex ring structure 7 at the end of the trachea 4, the detection error caused by air leakage at the gap of the detection port 81 can be prevented, and the detection accuracy can be improved.

[0026] It should be understood that the above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention.

[0027] The above introduction to the accompanying drawings used in the embodiments only shows some embodiments of the present utility model and should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

Claims

1. A life-saving bag air tightness detection device, characterized in that: It includes a negative pressure device, a detector device, a prompt device, a pressure sensor and an air pipe, wherein the negative pressure device is suitable for extracting the gas in the life-saving bag through the air pipe so that the negative pressure value in the life-saving bag reaches a preset value; The detector device is connected to the negative pressure device to detect the change in the negative pressure value of the life-saving bag during the pressure maintenance process; The prompt device is connected to the pressure sensor to give an alarm when the change in the negative pressure value in the life-saving bag reaches a preset value; The air pipe connects the negative pressure device and the life-saving bag, and a rubber layer is arranged at the end of the air outlet of the air pipe to closely adhere to the detection port of the life-saving bag to prevent gas from leaking through the gap between the detection port and the air pipe.

2. The air tightness detection device for life-saving bag according to claim 1, characterized in that: The detector device includes a pressure sensor, which is suitable for sensing the pressure change of the air tube to monitor the pressure in the life-saving bag.

3. The air tightness detection device for life-saving bag according to claim 1, characterized in that: The negative pressure device is an air pump for evacuating air from the inner cavity of the life-saving bag.

4. The air tightness detection device for life-saving bag according to claim 1, characterized in that: The end of the rubber layer is formed with a convex ring structure, and the convex ring structure is suitable for being attached to the outer periphery of the detection port of the life-saving bag after being inserted into the life-saving bag to improve the sealing effect at the detection port.

5. The air tightness detection device for life-saving bag according to claim 1, characterized in that: It also includes a display screen device, which is connected to the pressure sensor to display the pressure in the life-saving bag in real time.

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