Observation device based on pipe airtightness testing machine

Abstract

The utility model discloses an observation device based on a pipe air tightness testing machine, the observation device comprises an observation window installed on the side wall of a water tank, a camera and a sealed space, the camera is installed in the sealed space and monitors images in the water tank in real time through the observation window, during an air tightness test, the camera monitors whether bubbles are generated in the water tank or not, and if yes, the air tightness test is completed. The images are transmitted to the server side in real time, the bubbles are recognized through image processing, then alarm signals are generated above the corresponding observation windows, and the problem that in the prior art, the bubble generation situation needs to be manually observed in real time in the testing process of a pipe airtightness testing machine is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe detection, in particular to an observation device based on a pipe air tightness testing machine. Background Art

[0002] Pipes are widely used in many fields. As a carrier of liquids, gases, powders, etc., their air tightness determines whether the conveying medium will leak, so pipes generally need to undergo an air tightness test before leaving the factory.

[0003] The basic principle of doing an air tightness test is to seal both ends of the pipe, then inflate and pressurize the inside of the pipe, and place the pipe in water to observe whether bubbles are generated. If bubbles are generated, it means that the air tightness does not meet the standard, otherwise it has good air tightness.

[0004] There is an air tightness testing machine in the prior art, which clamps and fixes the pipe to be tested and places the pipe in water for air tightness testing. This air tightness testing machine can adaptively adjust the clamping device for pipes of different specifications to meet the diversity of pipes, and can clamp multiple pipes for testing at the same time; however, when this air tightness testing machine performs an air tightness test, it is necessary to manually observe the bubbles generated to judge the air tightness of the pipe. Real-time human observation is required during the test, and it is impossible to achieve a fully automatic pipe air tightness test. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an observation device based on a pipe air tightness testing machine to solve the technical problem in the prior art that manual observation is required during pipe air tightness testing, which increases labor costs.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An observation device based on a pipe air tightness tester, the pipe air tightness tester comprises a base, on which a plurality of pipe clamping mechanisms and a plurality of supporting components are fixedly installed along the length direction of the pipe to be tested, the pipe air tightness tester also comprises a water tank, the water tank is fixedly arranged below the base, the base can be driven by a lifting mechanism to be immersed in the water tank, and the observation device is fixedly arranged on the side wall of the water tank;

[0008] The observation device comprises a plurality of observation windows, in which cameras are installed, and the observation device also comprises a fill light installed on the side wall of the water tank.

[0009] Furthermore, the observation windows are installed in sequence and at intervals along the length direction of the water tank, and are all installed on one side of the side wall of the water tank.

[0010] Furthermore, the fill-in lights are arranged on the same side of the observation window, and the fill-in lights form a group of two, and each group of fill-in lights is correspondingly installed on the left and right sides of each observation window.

[0011] Furthermore, a light absorbing layer is provided at the bottom of the water tank and on the side facing the camera's search direction.

[0012] Furthermore, the observation window includes an inner frame and an outer frame, and the inner and outer frames are respectively fixed to the inner and outer sides of the side wall of the water tank by bolts. The outer frame is also fixed with a sealing cover by bolts, and the sealing cover, the outer frame and the observation window form a sealed space, and the camera is fixed in the sealed space.

[0013] Furthermore, a mounting bracket is reserved in the sealed space, a strip groove is provided on the mounting bracket, and the camera cooperates with the strip groove to achieve up and down adjustment.

[0014] Furthermore, the inner frame is also fixed with a sealing pressure plate by bolts.

[0015] Furthermore, an indicator light is provided above each observation window for providing an alarm indication when bubbles are detected.

[0016] Beneficial effects of the utility model:

[0017] The air tightness tester of the utility model has a preset observation device on the side wall of the water tank. The camera monitors the picture in the water in real time through the observation window, identifies whether bubbles are generated in the picture through real-time image processing on the remote server side, and gives an alarm indication through the indicator light above the corresponding observation window. Since large pipes are usually longer, the tester also needs to match the length of the pipe. However, when a tester of this size is conducting an air tightness test, manual observation of the bubbles requires walking around the tester to observe the test results, which is time-consuming and laborious. Compared with the pipe air tightness tester in the prior art, the observation device based on the pipe air tightness tester of the utility model can free up manpower and realize automatic identification of the air tightness of the pipe without manual observation. In addition, for longer pipes, the windows set at intervals can accurately locate which part of the pipe has air tightness defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a structural schematic diagram of the pipe air tightness testing machine of the utility model;

[0020] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the pipe air tightness testing machine;

[0021] Figure 3 It is a cross-sectional view of the observation device based on the pipe air tightness testing machine of the utility model;

[0022] Figure 4 It is a schematic diagram of the installation structure of the observation device based on the pipe air tightness test machine and the air tightness test machine of the utility model;

[0023] Figure 5 yes Figure 4 Enlarged schematic diagram of part B in the pipe air tightness testing machine.

[0024] Description of reference numerals:

[0025] 1. Water tank; 2. Observation window; 3. Base; 4. Lifting mechanism; 5. Fill light; 6. Sealing pressure plate; 7. Inner frame; 8. Camera; 9. Sealing cover; 10. Mounting bracket; 11. Outer frame. DETAILED DESCRIPTION

[0026] Unless otherwise defined, all technical and scientific terms used in this document have the same meaning as commonly understood by technicians in the technical field of the present invention; the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For example, the directions or positions indicated by terms such as "length", "width", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on the directions or positions shown in the drawings, which are only for the convenience of description and cannot be understood as limitations on the present technical solution.

[0027] The terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions; the terms "first", "second", etc. in the specification and claims of the present utility model or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0028] In the specification and claims of the utility model and the above-mentioned drawings, when an element is referred to as being "fixed on" or "mounted on" or "disposed on" or "connected to" another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as being "connected to" another element, it may be directly or indirectly connected to the other element.

[0029] In addition, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] Pipes are widely used in many fields. As a carrier of liquids, gases, powders, etc., their air tightness determines whether the conveying medium will leak, so pipes generally need to undergo an air tightness test before leaving the factory.

[0031] The basic principle of doing an air tightness test is to seal both ends of the pipe, then inflate and pressurize the inside of the pipe, and place the pipe in water to observe whether bubbles are generated. If bubbles are generated, it means that the air tightness does not meet the standard, otherwise it has good air tightness.

[0032] like Figure 1 The pipe air tightness testing machine shown in the figure has the following principle: the pipe is placed on the support plate of the base 3 of the testing machine, the pipe is clamped and fixed by a clamping component, one end of the pipe is sealed, and the other end is pressurized by inflating air into the pipe. After the pressurization is completed, the entire base is driven by the lifting mechanism 4 to sink into the water tank 1 below. If bubbles are generated in the water tank 1, the air tightness of the batch of pipes does not meet the standard, otherwise it has good air tightness. After the test is completed, the clamping mechanism is opened and closed, and the pipe is unloaded to the unloading area by rotating the support plate.

[0033] Example

[0034] During the actual operation of the air tightness tester mentioned above, it is necessary to manually observe whether bubbles are generated in the water tank, and it is difficult to locate which part of the pipe has an air tightness defect. For large pipes, the length is long, and the length of the tester is also long. Manual observation of bubbles is time-consuming and laborious and the effect is not good. This embodiment provides an observation device based on the pipe air tightness tester, which can automatically detect in real time whether bubbles are generated during the test and locate the specific part where the air tightness defect exists.

[0035] like Figure 1-5 As shown, an observation device based on a pipe air tightness tester, the pipe air tightness tester includes a base 3, on which a plurality of pipe clamping mechanisms and a plurality of supporting components are fixedly installed along the length direction of the pipe to be tested, the pipe air tightness tester also includes a water tank 1, the water tank 1 is fixedly arranged below the base 3, the base 3 can be driven to immerse in the water tank 1 by a lifting mechanism 4, and the observation device is fixedly arranged on the side wall of the water tank 1; after the base 3 is immersed in the water tank 1, the pipe is also immersed in the water tank 1;

[0036] The observation device includes a plurality of observation windows 2, in which a camera 8 is installed, and the observation windows 2 are made of a transparent material such as tempered glass. The observation device also includes a fill light 5 installed on the side wall of the water tank 1;

[0037] As a preferred embodiment, the observation windows 2 are installed in sequence at intervals along the length direction of the water tank 1, and are all installed on one side of the side wall of the water tank 1, and the fill light 5 is arranged on the same side of the observation window 2, and two fill lights 5 form a group, and each group is respectively arranged on the left and right sides of the observation window 2, and the fill light 5 and the observation window 2 are arranged on the same side of the water tank 1, and the light irradiation direction of the fill light 5 is consistent with the direction facing the observation window 2, while ensuring the brightness in the water tank 1, avoiding the light of the fill light 5 from interfering with the observation screen;

[0038] Furthermore, a light-absorbing layer is provided at the bottom of the water tank 1 and on the side of the camera search direction, and the light-absorbing layer can minimize the reflection intensity of the light of the fill light 5, further reduce light interference, and make the light completely used to provide a clear field of view for the camera 8; the light-absorbing layer can be provided by painting a black light-absorbing paint on the surface of the water tank 1, or by directly installing a light-absorbing plate on the surface of the water tank 1. Furthermore, as long as the implementation method can achieve the absorption of light and reduce reflection, it can be used as an optional embodiment.

[0039] As a preferred embodiment, the observation window 2 includes an inner frame 7 and an outer frame 11, and the inner and outer frames are respectively fixed to the inner and outer sides of the side wall of the water tank 1 by bolts. The outer frame 11 is also fixed with a sealing cover 9 by bolts. The sealing cover 9, the outer frame 11 and the observation window 2 form a sealed space, and the camera 8 is fixed in the sealed space to prevent water from seeping into the sealed space and affecting the camera monitoring operation.

[0040] Furthermore, a mounting bracket 11 is reserved in the sealed space, and a strip groove is provided on the mounting bracket 11. When the camera 8 is installed, it can be adjusted up and down in cooperation with the strip groove, so as to adjust the camera to the best observation point.

[0041] As a preferred embodiment, the inner frame 7 is also fixed with a sealing pressure plate 6 by bolts, and the sealing pressure plate is inlaid and fit with the inner frame. When the water tank 1 is filled with water, the direction of the water pressure is applied to the side wall perpendicular to the sealing pressure plate 6, further ensuring the sealing effect of the sealed space and preventing water from seeping in.

[0042] As a preferred embodiment, an indicator light is installed above each observation window (for example, above the side wall of the water tank) for alarm indication when bubbles are detected.

[0043] The operation process of the pipe air tightness testing machine of this embodiment is as follows: the pipe to be tested on the base 3 is fixed by the clamping part, and the lifting mechanism 4 drives the base 3 to sink into the water tank 1 to perform the pipe air tightness test. During the test, the camera 8 in the sealed space continuously records the picture in the water in real time through the observation window 2 and transmits the picture to the server side. The server side analyzes and processes the input image and identifies the image that generates bubbles. The indicator light above the observation window 2 corresponding to the identified image flashes, prompting the operator that the corresponding part of the pipe has an air tightness problem, thereby realizing real-time automatic monitoring of the air tightness test.

[0044] It should be noted that the image recognition mentioned in the above operation process is realized through a software algorithm on the server side. In the field of signal processing, there are many existing technical methods that can realize the functions of image processing, identification and judgment, and the software-side functions do not belong to the protection scope and object of this utility model. The technical personnel in this field can fully implement the technical scheme disclosed in this utility model through the content disclosed in this utility model and the image recognition algorithm of the prior art. Therefore, the image recognition method is not further described in this embodiment.

[0045] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. An observation device based on a pipe air tightness tester, the pipe air tightness tester comprising a base, on which a plurality of pipe clamping mechanisms and a plurality of supporting components are fixedly mounted along the length direction of the pipe to be tested, characterized in that: The pipe air tightness testing machine also includes a water tank, which is fixedly arranged below the base, and the base can be driven by a lifting mechanism to immerse in the water tank, and the observation device is fixedly arranged on the side wall of the water tank; The observation device comprises a plurality of observation windows, in which cameras are installed, and the observation device also comprises a fill light installed on the side wall of the water tank.

2. The observation device based on the pipe air tightness testing machine according to claim 1, characterized in that: The observation windows are installed in sequence and at intervals along the length direction of the water tank, and are all installed on one side of the side wall of the water tank.

3. The observation device based on the pipe air tightness testing machine according to claim 1, characterized in that: The fill-in lights are arranged on the same side of the observation window, and the fill-in lights form a group of two, and each group of fill-in lights is correspondingly installed on the left and right sides of each observation window.

4. The observation device based on the pipe air tightness testing machine according to claim 2, characterized in that: A light absorbing layer is arranged at the bottom of the water tank and on one side of the camera's search direction.

5. The observation device based on the pipe air tightness testing machine according to claim 1, characterized in that: The observation window includes an inner frame and an outer frame, and the inner and outer frames are respectively fixed to the inner and outer sides of the water tank side wall by bolts. The outer frame is also fixed with a sealing cover by bolts. The sealing cover, the outer frame and the observation window form a sealed space, and the camera is fixed in the sealed space.

6. The observation device based on the pipe air tightness testing machine according to claim 5, characterized in that: A mounting bracket is reserved in the sealed space, a strip groove is arranged on the mounting bracket, and the camera cooperates with the strip groove to realize up and down adjustment.

7. The observation device based on the pipe air tightness testing machine according to claim 5, characterized in that: The inner frame is also fixed with a sealing pressure plate by bolts.

8. The observation device based on the pipe air tightness testing machine according to claim 1, characterized in that: An indicator light is arranged above each observation window for giving an alarm indication when bubbles are detected.

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