Leakage testing machine

Abstract

The utility model provides a leakage testing machine, comprising a testing frame assembly which comprises an air tightness testing unit, a sealing box and a placing frame for placing a device to be tested; the air tightness testing unit and the sealing box are both arranged on the placing frame, the placing frame slides on the supporting frame water tank, the water tank is arranged below the testing frame assembly, and under traction of the supporting frame, the placing frame, a device to be tested and the sealing box synchronously enter the water tank. With the help of the sealing box, the water level of the water tank rapidly rises to submerge the to-be-detected device. The sealing box provided by the utility model further accelerates the rising of the horizontal plane in the descending process, and the rapid rising of the horizontal plane can accelerate the submerging speed of the device to be tested, thereby reducing the descending height of the placing frame, shortening the running stroke of the equipment, and reducing the use time in the testing process.

Description

Technical Field

[0001] The utility model belongs to the technical field of leak testers, in particular to a leak tester. Background Art

[0002] Leak testers are generally used to detect the air tightness of containers. For example, equipment such as oil tanks require detailed monitoring of the air tightness of containers. The leak tester usually uses a filling pipe to seal the liquid inlet of the container and injects air into it. The product quality is judged based on the change in air pressure during the pressure maintenance process. When conducting leak point analysis, the device to be tested will be placed in water during the pressure maintenance process, and the leak point will be detected and located by observing the bubbles.

[0003] In the prior art, when locating the leak, the device to be tested is usually placed in water with the help of a lifting structure. Therefore, there is a process of equipment lifting during the test. This process simply waits for the horizontal plane to submerge the entire device to be tested to avoid undetected leaks. However, most of the existing equipment only uses a lifting structure to passively wait for the submersion to be completed, which takes up a long test time and affects the detection efficiency. Utility Model Content

[0004] The utility model provides a leak tester, aiming to solve the problem that most of the existing equipments only adopt a lifting structure to passively wait for the flooding to be completed, which takes a long test time and affects the detection efficiency.

[0005] The utility model is implemented in this way: a leak tester comprises:

[0006] A support frame and an equipment seat, wherein the support frame is arranged on the top of the equipment seat;

[0007] The test frame assembly includes an airtightness test unit, a sealed box, and a mounting frame for mounting the device to be tested; the airtightness test unit and the sealed box are both arranged on the mounting frame, and the mounting frame slides on the support frame.

[0008] A water tank is arranged below the test frame assembly. Under the traction of the support frame, the placement frame, the device to be tested and the sealing box are synchronously put into the water tank. With the help of the sealing box, the water level of the water tank rises rapidly to submerge the device to be tested.

[0009] Preferably, the placement frame comprises a bearing plate and a main frame; the main frame is connected to the bearing plate, the main frame is used to place the device to be tested, and the bearing plate slides on the guide plate.

[0010] Preferably, the main frame comprises side frames, a supporting plate and connecting rods, the side frames are connected by connecting rods, and the supporting plate is arranged at the bottom of the side frames.

[0011] Preferably, the plane where the side frame contacts the sealing box is an inclined structure.

[0012] Preferably, a sealing box is provided on the outer side of the side frame.

[0013] Preferably, the support frame comprises a guide plate, a bottom plate and a support rod, and the guide plate and the bottom plate are connected by a support rod.

[0014] Preferably, the end surface of the bearing plate away from the main frame is provided with a plurality of groups of sliding blocks, the sliding blocks slide along the sliding grooves provided on the guide plate and penetrate the guide plate, and a top plate is also provided on the portion of the sliding block passing through the sliding groove.

[0015] Preferably, a sliding gap is provided between the top plate and the bearing plate, and during the sliding process, the top plate abuts against the end surface of the guide plate away from the bearing plate.

[0016] Preferably, a hydraulic lifting rod is provided on the bottom plate, and the hydraulic lifting rod is connected to the top plate.

[0017] Preferably, a plurality of groups of support seats are provided below the top plate.

[0018] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0019] The mounting frame in the leak tester provided by the utility model will normally enter the water tank when carrying the device to be tested down. Due to the buoyancy of the water, the mounting frame and the device to be tested will also displace a certain volume of water during the descent process, and the water level will rise. The sealed box will further raise the water level during the descent process. The rapid rise of the water level can speed up the submergence of the device to be tested, thereby reducing the height to which the mounting frame needs to descend, shortening the equipment operation stroke, and reducing the time used during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a structural schematic diagram of a leak tester provided by the utility model.

[0021] Figure 2 The utility model is a schematic diagram of the structure of a test frame assembly of a leak tester.

[0022] Figure 3 The utility model is a schematic diagram of the exploded structure of a test frame assembly of a leak tester.

[0023] Figure 4 The utility model is a schematic diagram of the exploded structure of a middle support frame and a bearing plate of a leak tester provided by the utility model.

[0024] Figure 5 The utility model is a schematic diagram of the structure of a load-bearing plate of a leak tester.

[0025] Figure 6 The utility model is a schematic diagram of the structure of a load-bearing plate and a support frame of a leak tester.

[0026] Description of reference numerals:

[0027] 100, support frame; 110, guide plate; 120, bottom plate; 130, support frame; 140, hydraulic lifting rod;

[0028] 200, test frame assembly; 210, air tightness test unit; 220, placement frame; 221, load-bearing plate; 2211, slider; 2212, top plate; 2213, support seat; 222, main frame; 2221, side frame; 2222, support plate; 2223, connecting rod; 230, sealing box;

[0029] 300, water tank;

[0030] 400. Equipment holder. DETAILED DESCRIPTION

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0032] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. 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.

[0033] The utility model embodiment provides a leak tester, such as Figure 1-Figure 6 As shown, the leak tester comprises:

[0034] A support frame 100 and an equipment seat 400, wherein the support frame 100 is arranged on the top of the equipment seat 400;

[0035] The test stand assembly 200 includes an airtightness test unit 210, a sealed box 230, and a mounting frame 220 for mounting the device to be tested; the airtightness test unit 210 and the sealed box 230 are both arranged on the mounting frame 220, and the mounting frame 220 slides on the support frame 100.

[0036] The water tank 300 is arranged below the test frame assembly 200. Under the traction of the support frame 100, the placement frame 220, the device to be tested and the sealing box 230 enter the water tank 300 synchronously. With the help of the sealing box 230, the water level of the water tank 300 rises rapidly to submerge the device to be tested; with the help of the airtightness test unit 210, the airtightness and leakage point detection are carried out;

[0037] In the present application, the air tightness test unit 210 adopts the existing technology equipment, and its main working principle is to inject safety gas into the accommodating cavity of the device to be tested, and determine the air tightness performance of the device to be tested by detecting the pressure during the pressure holding process; the air tightness test unit 210 is arranged on the top of the mounting frame 220 and moves synchronously with the mounting frame 220, and the gas filling pipe responsible for injecting gas is moved by the pneumatic push rod to complete the action of inserting the gas filling pipe. The above structural principles all adopt the existing technology equipment, and this application will not be described in detail;

[0038] The sealed box 230 is a sealed structure, and is filled with air or other safe gas, wherein the safe gas is nitrogen or other non-explosive gas; when the mounting rack 220 normally carries the device to be tested and descends, it will enter the water tank 300. Due to the buoyancy of the water, the mounting rack 220 and the device to be tested will also displace a certain volume of water during the descent process, and the water level will rise. The sealed box 230 will further raise the water level during the descent process. The rapid rise of the water level can further accelerate the submergence speed of the device to be tested, thereby reducing the height to which the mounting rack 220 needs to descend, shortening the travel of the equipment, and reducing the time used during the test process;

[0039] The equipment seat 400 is provided with auxiliary equipment for airtight experiment and corresponding motion structure, and the support frame 100 includes a guide plate 110, a bottom plate 120 and a support rod 130, and the guide plate 110 and the bottom plate 120 are connected by a support rod 130;

[0040] As a preferred implementation in this embodiment, the placement rack 220 includes a carrying plate 221 and a main frame 222; the main frame 222 is connected to the carrying plate 221, the main frame 222 is used to place the device under test, and the carrying plate 221 slides on the guide plate 110;

[0041] The main frame 222 includes a side frame 2221, a support plate 2222 and a connecting rod 2223. The side frames 2221 are connected by the connecting rod 2223, and the support plate 2222 is arranged at the bottom of the side frame 2221; a sealing box 230 is arranged on the outer side of the side frame 2221, and the plane where the side frame 2221 contacts the sealing box 230 is an inclined structure. During the downward process, the side frame 2221 will apply positive pressure to offset the buoyancy of the sealing box 230;

[0042] The support plate 2222 is mainly used to support the device to be tested, and the inner wall structure of the side frame 2221 is adapted to the outer wall of the device to be tested. The present application is mainly adapted to a square oil tank, which can be clamped in a rectangular area formed by the connecting rod 2223, the side frame 2221 and the bearing plate 221. A clamping mechanism is also provided on the sealing box 230 to clamp the top of the square oil tank. The present application adopts a pressure rod with a rotation ability, and the pressure rod is rotated to a designated area to be held against the oil tank through the rotation action. The pneumatic pressure rod technology in the prior art can also be used to complete the fixation, which will not be described in detail here.

[0043] As a preferred implementation in this embodiment, a slider 2211 is provided on the end surface of the main frame 222 away from the carrying plate 221. The slider 2211 slides along a slide groove provided on the guide plate 110 and penetrates the guide plate 110. A top plate 2212 is provided on the portion of the slider 2211 passing through the slide groove.

[0044] A sliding gap is provided between the top plate 2212 and the bearing plate 221 , and during the sliding process, the top plate 2212 abuts against the end surface of the guide plate 110 away from the bearing plate 221 ;

[0045] A hydraulic lifting rod 140 is provided on the bottom plate 120, and the hydraulic lifting rod 140 is connected to the top plate 2212. The hydraulic lifting rod 140 drives the top plate 2212 to slide up and down to complete the lifting task of the test rack assembly 200;

[0046] As a preferred implementation in this embodiment, a plurality of support seats 2213 are further provided below the top plate 2212, and the support seats 2213 help the top plate 2212 to distribute the pressure exerted on the slider 2211 during the sliding process;

[0047] Here’s how this application works:

[0048] First, place the device to be tested in the mounting frame 220 on the test frame assembly 200, then insert the gas filling pipe of the airtightness test unit 210 into the injection hole of the device to be tested, and inject safe gas into the device to be tested. During the pressure measurement process, if the air pressure data is found to be abnormal and a leak detection is required, the test frame assembly 200 is lowered as a whole, mainly by the movement of the hydraulic lifting rod 140 for traction. During the process of lowering the height, the sealing box 230 will accelerate the rising speed of the water surface, allowing the water surface to quickly submerge the device to be tested, and the location of the leak is determined by underwater identification. Of course, air can also be injected underwater to perform an airtightness test.

[0049] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0050] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A leak tester, characterized in that: include: A support frame (100) and an equipment seat (400), wherein the support frame (100) is arranged on the top of the equipment seat (400); A test rack assembly (200), the test rack assembly (200) comprising an airtightness test unit (210), a sealed box (230) and a placement rack (220) for placing a device to be tested; the airtightness test unit (210) and the sealed box (230) are both arranged on the placement rack (220), and the placement rack (220) slides on a support rack (100); A water tank (300) is provided below the test frame assembly (200); under the traction of the support frame (100), the placement frame (220), the device to be tested and the sealing box (230) are synchronously entered into the water tank (300); with the help of the sealing box (230), the water level of the water tank (300) rises rapidly to submerge the device to be tested.

2. A leak tester as claimed in claim 1, characterized in that: The placement frame (220) comprises a bearing plate (221) and a main frame (222); the main frame (222) is connected to the bearing plate (221), the main frame (222) is used to place the device to be tested, and the bearing plate (221) slides on the guide plate (110).

3. A leak tester as claimed in claim 2, characterized in that: The main frame (222) comprises a side frame (2221), a supporting plate (2222) and a connecting rod (2223); the side frames (2221) are connected via the connecting rod (2223); and the supporting plate (2222) is arranged at the bottom of the side frame (2221).

4. A leak tester as claimed in claim 3, characterized in that: The plane where the side frame (2221) contacts the sealing box (230) is an inclined structure.

5. A leak tester as claimed in claim 3, characterized in that: A sealing box (230) is arranged outside the side frame (2221).

6. A leak tester as claimed in claim 5, characterized in that: The support frame (100) comprises a guide plate (110), a bottom plate (120) and a support rod (130), wherein the guide plate (110) and the bottom plate (120) are connected by a support rod (130).

7. A leak tester as claimed in claim 6, characterized in that: The end surface of the main frame (222) away from the bearing plate (221) is provided with a plurality of groups of sliding blocks (2211), the sliding blocks (2211) slide along a sliding groove provided on the guide plate (110) and penetrate the guide plate (110), and a top plate (2212) is also provided on the portion of the sliding block (2211) passing through the sliding groove.

8. A leak tester as claimed in claim 7, characterized in that: A sliding gap is provided between the top plate (2212) and the bearing plate (221), and during the sliding process, the top plate (2212) abuts against the end surface of the guide plate (110) away from the bearing plate (221).

9. A leak tester as claimed in claim 8, characterized in that: A hydraulic lifting rod (140) is provided on the bottom plate (120), and the hydraulic lifting rod (140) is connected to the top plate (2212).

10. A leak tester as claimed in claim 9, characterized in that: A plurality of groups of support seats (2213) are also provided below the top plate (2212).

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