An airtightness testing device for inflatable structural components

Abstract

This invention provides an airtightness testing device for inflatable structural components, comprising an observation cylinder and limiting rings. The observation cylinder is a transparent cylindrical structure open at both ends, with transparent sealing end caps A and B respectively installed at the two ends. The interior of the observation cylinder is used to place the inflatable structural component to be tested. An inflation valve head is centrally located on the sealing end cap A, with its two ends connected to the inflatable structural component inside the observation cylinder and a connecting air passage outside the observation cylinder. The sealing end cap B has two switching valves. Several limiting rings are spaced apart inside the observation cylinder, through which the inflatable structural component to be tested passes. The limiting rings restrict the floating of the inflated structural component within the observation cylinder. This invention provides a more intuitive and comprehensive detection of leaks in inflatable structural components.

Description

Technical Field

[0001] This invention relates to the field of inflatable structural component manufacturing, and more particularly to an airtightness testing device for inflatable structural components. Background Technology

[0002] Currently, in the field of inflatable structural component production, there is no device capable of systematically observing and detecting leaks in inflatable structural components. The most common method is to spray soapy water to locate leaks. However, the soapy water spraying method is affected by the concentration of the soapy water and the evenness of manual application, resulting in slow effectiveness and incomplete inspection coverage. Therefore, the detection effect on the processing quality of inflatable structural components is not ideal. Summary of the Invention

[0003] To address the technical problem of detecting leaks in inflatable structural components using the soap water spraying method, a device for detecting the airtightness of inflatable structural components is provided.

[0004] The technical means employed in this invention are as follows:

[0005] An airtightness testing device for an inflatable structural component, characterized in that it includes an observation cylinder and a limiting ring;

[0006] The observation tube is a transparent cylindrical structure with openings at both ends. Transparent sealing end caps A and B are respectively installed at the two openings. The interior of the observation tube is used to house the inflatable structural component to be tested. An inflation valve head is located at the center of sealing end cap A, with its two ends connected to the inflatable structural component to be tested located inside the observation tube and to a connecting air passage located outside the observation tube. Sealing end cap B has two switching valves, used for injecting water into the observation tube and for venting air during the water injection process.

[0007] The observation tube is provided with several limiting rings at intervals inside. The inflatable structural component to be tested passes through the limiting rings. The limiting rings are used to restrict the floating of the inflatable structural component to be tested inside the observation tube after inflation. When water is filled into the observation tube, the inflatable structural component to be tested can be completely submerged in the water.

[0008] Furthermore, the limiting ring includes a central main ring and at least three limiting claws. The inflatable structural component to be tested passes through the central main ring. The sidewall of the central main ring is provided with at least three threaded through holes spaced apart circumferentially. Each threaded through hole contains a limiting claw installed by thread. The central main ring is fixed inside the observation tube by adjusting the position of the limiting claws in the threaded through holes until they abut against the inner wall of the observation tube.

[0009] Furthermore, the limiting ring includes three limiting claws, and the sidewall of the central main ring is provided with three threaded through holes at equal intervals along the circumference, with the included angle between the axes of two adjacent threaded through holes being 120°.

[0010] Furthermore, it also includes a roller seat for supporting the observation tube. The roller seat includes two roller frames and several rollers. The upper surface of the roller frames is an arc surface. The several rollers are disposed on the upper surface of the roller frames. The two ends of the rollers are rotatably mounted on the two roller frames respectively. The observation tube is placed above the rollers. The several rollers are arranged in an arc shape that matches the outer surface of the observation tube. The observation tube is in contact with the surface of the rollers.

[0011] Furthermore, sealing rings are installed between the sealing end cap A and the sealing end cap B and the observation cylinder.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] The airtightness testing device for inflatable structural components provided by this invention can more intuitively and comprehensively detect production defects (leakage points) in inflatable structural components, and each component is easy to replace.

[0014] Based on the above reasons, this invention can be widely promoted in the field of inflatable structural component production. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the airtightness testing device for the inflatable structural component described in this invention.

[0017] Figure 2 This is a schematic diagram of the airtightness testing device for the inflatable structural component described in this invention.

[0018] Figure 3 This is a schematic diagram of the internal structure of the airtightness testing device for the inflatable structural component described in this invention.

[0019] In the diagram: 1. Sealing end cap A; 2. Inflation valve head; 3. Sealing ring; 4. Roller; 5. Roller bracket; 6. Sealing end cap B; 7. Switch valve; 8. Central main ring; 9. Limiting claw. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0024] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0025] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0026] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0027] Example 1

[0028] like Figure 1-3 As shown, the present invention provides an airtightness testing device for inflatable structural components, which detects leaks in inflatable structural components by water injection, including an observation cylinder and a limiting ring;

[0029] The observation tube is a transparent cylindrical structure with openings at both ends. Transparent sealing end caps A1 and B6 are respectively installed at the openings at both ends of the observation tube. The interior of the observation tube is used to place the inflatable structural component to be tested.

[0030] The sealing end cap A1 is provided with an inflation valve head 2 at its center. The two ends of the inflation valve head 2 are respectively connected to the inflatable structure to be tested located inside the observation tube and the connecting air passage located outside the observation tube. An external air source can inflate the inflatable structure to be tested through the connecting air passage.

[0031] The sealing end cap B6 is equipped with two switching valves, which are used to inject water into the observation tube and to vent air during the water injection process, and can also be used to drain water after the observation is completed.

[0032] The observation tube is provided with several limiting rings at intervals inside. The inflatable structural component to be tested passes through the limiting rings. The limiting rings are used to restrict the floating of the inflatable structural component to be tested inside the observation tube after inflation. When water is filled into the observation tube, the inflatable structural component to be tested can be completely submerged in the water.

[0033] Furthermore, the limiting ring includes a central main ring 8 and at least three limiting claws 9. The inflatable structural component to be tested passes through the central main ring 8. The sidewall of the central main ring 8 is provided with at least three threaded through holes spaced apart circumferentially. Each threaded through hole contains a limiting claw 9 installed by thread. The central main ring 8 is fixed inside the observation tube by adjusting the position of the limiting claws 9 in the threaded through holes until they abut against the inner wall of the observation tube.

[0034] Furthermore, the limiting ring includes three limiting claws 9, and the sidewall of the central main ring 8 is provided with three threaded through holes at equal intervals along the circumference, with the included angle between the axes of two adjacent threaded through holes being 120°.

[0035] Furthermore, it also includes a roller base for supporting the observation tube. The roller base includes two roller frames 5 and several rollers 4. The upper surface of the roller frames 5 is an arc surface. Several rollers 4 are disposed on the upper surface of the roller frames 5. The two ends of the rollers 4 are respectively rotatably mounted on the two roller frames 5. The observation tube is placed above the rollers 4. The several rollers 4 are arranged in an arc shape that matches the outer surface of the observation tube. The observation tube is in contact with the surface of the rollers 4. In use, by rotating the observation tube, the inflatable structure to be tested after inflation can be observed from different angles.

[0036] Furthermore, the observation tube has flange structures at both ends for installing the sealing end cap A1 and the sealing end cap B6, respectively.

[0037] Furthermore, a sealing ring 3 is installed between the sealing end cap A1 and the sealing end cap B6 and the observation tube to form a seal between the observation tube and the sealing end cap A1 and the sealing end cap B6 to prevent leakage.

[0038] Furthermore, the sealing ring 3 is made of sealing materials such as rubber and PVC.

[0039] In use, first place the observation cylinder on the roller seat, then insert the limiting ring into the inner wall of the observation cylinder and fix it. Next, put in the inflatable structural component to be tested and connect it to the external air connection through the air valve head 2 on the sealing end cover A1. Place the sealing ring between the flange structure of the observation cylinder and the sealing end covers at both ends to seal it. Inflate the inflatable structural component to be tested through the air connection, and adjust the position of one switch valve on the sealing end cover B6 to inject water into the observation cylinder. At the same time, open the other switch valve to allow air to be expelled smoothly during water injection until the water level completely submerges the inflatable structural component to be tested. Then stop injecting water and observe. The places where air bubbles are generated on the inflatable structural component are the leakage points. During observation, rotate the observation cylinder through the roller seat to easily observe whether there are any leakage points at various positions of the inflatable structural component.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for detecting the airtightness of an inflatable structural component, characterized in that, Includes observation tube and limiting ring; The observation tube is a transparent cylindrical structure with openings at both ends. Transparent sealing end caps A and B are respectively installed at the two openings. The interior of the observation tube is used to house the inflatable structural component to be tested. An inflation valve head is located at the center of sealing end cap A, with its two ends connected to the inflatable structural component to be tested located inside the observation tube and to a connecting air passage located outside the observation tube. Sealing end cap B has two switching valves, used for injecting water into the observation tube and for venting air during the water injection process. The observation tube is provided with several limiting rings at intervals inside. The inflatable structural component to be tested passes through the limiting rings. The limiting rings are used to restrict the floating of the inflatable structural component to be tested inside the observation tube after inflation. When water is filled into the observation tube, the inflatable structural component to be tested can be completely submerged in the water. The limiting ring includes a central main ring and at least three limiting claws. The inflatable structural component to be tested passes through the central main ring. The sidewall of the central main ring is provided with at least three threaded through holes spaced apart circumferentially. Each threaded through hole contains a limiting claw installed by thread. The central main ring is fixed inside the observation tube by adjusting the position of the limiting claws in the threaded through holes until they abut against the inner wall of the observation tube.

2. The airtightness testing device for inflatable structural components according to claim 1, characterized in that, The limiting ring includes three limiting claws, and the side wall of the central main ring is provided with three threaded through holes at equal intervals along the circumference, with the included angle between the axes of two adjacent threaded through holes being 120°.

3. The airtightness testing device for inflatable structural components according to claim 1, characterized in that, It also includes a roller base for supporting the observation tube. The roller base includes two roller frames and several rollers. The upper surface of the roller frames is an arc surface. The several rollers are disposed on the upper surface of the roller frames. The two ends of the rollers are rotatably mounted on the two roller frames respectively. The observation tube is placed above the rollers. The several rollers are arranged in an arc shape that matches the outer surface of the observation tube. The observation tube is in contact with the surface of the rollers.

4. The airtightness testing device for inflatable structural components according to claim 1, characterized in that, A sealing ring is installed between the sealing end cap A and the sealing end cap B and the observation cylinder.

Images