CN219369421U - Hydrostatic pressure resistance tester - Google Patents

Abstract

The utility model provides a hydrostatic pressure resistance tester which comprises at least one testing module, a water inlet pressure regulating device, a pressure gauge, a camera and a computer, wherein the testing module comprises a water collecting shell, a porous plate and a fastening piece. The camera is used for collecting and capturing video images of the pressure indication surfaces of the perforated plate and the pressure gauge, and the computer is used for recording and recognizing the video images captured by the camera. Based on the image recognition technology, the water seepage judgment standard can be unified, and the test process can be tracked by the computer through recording the video image; this also makes it feasible to conduct multiple sets of tests simultaneously, improving test efficiency, and improving test consistency.

Description

Hydrostatic pressure resistance tester

Technical Field

The utility model relates to the field of engineering detection, in particular to a test instrument for hydrostatic pressure resistance of geosynthetic materials.

Background

The hydrostatic pressure resistance can be one of important performances of various geotechnical anti-seepage materials (such as geomembranes, composite geomembranes, geotechnical waterproof membrane materials and the like). The basic principle of the test is that a sample is placed in a specified test module, a certain hydraulic pressure difference is applied to two sides of the sample, and the sample is kept for a certain time. And gradually increasing the hydraulic pressure difference until the water seepage phenomenon occurs to the sample, and recording the maximum hydraulic pressure difference which can be born by the sample, namely the hydrostatic pressure resistance of the sample. It is generally necessary to test 3 samples, and the lowest value among the measured hydrostatic pressure resistance values of the 3 samples is used as the hydrostatic pressure resistance value of the sample. The existing hydrostatic pressure resistance tester needs people to identify whether water seepage exists or not by using two eyes, however, understanding of water seepage by different people is inconsistent, for example, when the size of water drops is large, water seepage is regarded as, and certain difference exists in test results of different people. Secondly, 3 samples are tested respectively due to the limitation of human eye identification and operation, the testing efficiency is low, and the pressure controlled during the testing of different samples is difficult to be kept in absolute consistency due to pressure regulation control, so that the testing environments of the different samples are substantially different, and the consistency of the test is reduced.

Disclosure of Invention

Based on the technical problems in the prior art, the utility model provides an improved hydrostatic pressure resistant tester, which aims to solve at least any one of the technical problems, and comprises at least one testing module, a water inlet pressure regulating device and a pressure gauge. The test module comprises a water collecting shell, a porous plate and a fastening piece, wherein a sample to be tested is clamped between the water collecting shell and the porous plate, and the fastening piece is used for pressing the water collecting shell and the porous plate; the water inlet pressure regulating device is used for supplying adjustable constant-pressure test water to the water collecting shell; the pressure gauge is used for measuring and indicating the pressure value of the test water for supplying the adjustable constant pressure to the water collecting shell; the hydrostatic pressure resistance tester also comprises a camera and a computer, wherein the camera is used for collecting and capturing video images of the porous plate and the pressure indication surface of the pressure gauge, and the computer is used for recording and recognizing the video images collected and captured by the camera.

Further, the number of the test modules is specifically 3, and the test modules comprise a first test module, a second test module and a third test module.

Further, the outlet of the water inlet pressure regulating device is communicated with a main water inlet pipe, a first water inlet branch pipe, a second water inlet branch pipe, a third water inlet branch pipe and a pressure gauge branch pipe are arranged on the main water inlet pipe, the first water inlet branch pipe, the second water inlet branch pipe and the third water inlet branch pipe are respectively communicated with a first test module, a second test module and a third test module, and the pressure gauge branch pipe is communicated with the pressure gauge.

Further, a first on-off electromagnetic valve, a second on-off electromagnetic valve and a third on-off electromagnetic valve are respectively arranged on the first water inlet branch pipe, the second water inlet branch pipe and the third water inlet branch pipe.

Further, the computer is electrically connected with the first on-off electromagnetic valve, the second on-off electromagnetic valve and the third on-off electromagnetic valve and used for controlling the on-off of the first on-off electromagnetic valve, the second on-off electromagnetic valve and the third on-off electromagnetic valve.

In another embodiment, the computer is further electrically connected to the water inlet pressure regulator for controlling and regulating the output pressure of the water inlet pressure regulator.

The hydrostatic pressure resistance tester provided by the utility model can unify water seepage judgment standards based on an image recognition technology, and the test process can be tracked by the recording of a video image by a computer; this also makes it feasible to run multiple sets of tests simultaneously, while also improving the consistency of the tests.

Drawings

FIG. 1 is a schematic view of the structure of the present utility model

FIG. 2 is a schematic diagram of a test module according to the present utility model

Detailed Description

The utility model is further illustrated by the following examples:

in the description of the present utility model, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," second, "" third, "" fourth, "" fifth, "" sixth, "and seventh" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 and 2, the hydrostatic pressure resistance tester provided by the utility model comprises: 3 parallel test modules (the specific number is not limited to 3, but 3 samples are required to be tested in consideration of the requirements of the existing standards and specifications, so that 3 test modules are arranged), namely a first test module 1-1, a second test module 1-2 and a third test module 1-3. Each test module has the same structure, and the test module can adopt a known structure referring to fig. 2, namely, the test module comprises a water collecting shell 8, a porous plate 9 and a fastening piece 10, a sample 11 to be tested is clamped between the water collecting shell 8 and the porous plate 9, the fastening piece 10 is used for pressing the water collecting shell 8 and the porous plate 9, the fastening piece 10 is shown as a bolt structure in fig. 2, and various structures can be actually adopted for replacement, such as a clamping device or a cylinder pressing mode and other various modes, so long as the water collecting shell 8 and the porous plate 9 can be clamped to prevent water seepage from the side. The hydrostatic pressure tester further comprises a water inlet pressure regulating device 2 for supplying test water of an adjustable constant pressure to the water collection housing 8, and a pressure gauge 4 for determining and indicating a pressure value of the test water supplying the water collection housing 8 of the adjustable constant pressure. The hydrostatic pressure resistance tester mainly comprises a camera 6 and a computer 7, wherein the camera 6 is used for collecting and capturing video images of a porous plate 9 and a pressure indication surface of the pressure gauge 4, and the computer 7 is used for recording and recognizing the video images collected and captured by the camera 6. The outlet of the water inlet pressure regulating device 2 is communicated with a main water inlet pipe 3-1, a first water inlet branch pipe 3-2, a second water inlet branch pipe 3-3, a third water inlet branch pipe 3-4 and a pressure gauge branch pipe 3-5 are arranged on the main water inlet pipe 3-1, the first water inlet branch pipe 3-2, the second water inlet branch pipe 3-3 and the third water inlet branch pipe 3-4 are respectively communicated with a first test module 1-1, a second test module 1-2 and a third test module 1-3, and the pressure gauge branch pipe 3-5 is communicated with the pressure gauge 4.

Through the accurate whole process of infiltration of snatching of image recognition technical science, can be through setting up the drop size in order to regard as the infiltration standard, avoided different operating personnel's judgement inconsistent condition like this. In addition, the reading of the pressure gauge is further identified in the captured image of the seepage, the hydrostatic pressure resistance of the sample can be determined based on the previous hydraulic pressure difference, and the hydrostatic pressure resistance is recorded in a computer. The image recognition technology mentioned above is not an improvement of the present utility model, and any of the known technologies may be used, for example, but not limited to, the following technical literature ("study of bead edge detection algorithm and its application in power industry", peng Liang, et al, shuoshi paper; "study of composite insulator surface bead image segmentation algorithm based on maximum entropy", wang Shenli, et al, "communication power supply technology"). The application of the image recognition technology simultaneously makes it possible to simultaneously perform the tests of three groups of samples, so that the test efficiency can be greatly improved, the three groups of tests are completed under the same pressure, and the consistency of the tests is improved. The video image is recorded in the computer, so that the traceability of the test process is also realized, and the test data is prevented from being tampered.

Further, a first on-off electromagnetic valve 5-1, a second on-off electromagnetic valve 5-2 and a third on-off electromagnetic valve 5-3 can be respectively arranged on the first water inlet branch pipe 3-2, the second water inlet branch pipe 3-3 and the third water inlet branch pipe 3-4, so that tests of 1-3 samples can be selectively carried out according to the needs. For the convenience of operation, the computer 7 is electrically connected with the first on-off electromagnetic valve 5-1, the second on-off electromagnetic valve 5-2 and the third on-off electromagnetic valve 5-3, and is used for controlling the on-off of the first on-off electromagnetic valve 5-1, the second on-off electromagnetic valve 5-2 and the third on-off electromagnetic valve 5-3.

In addition, the computer 7 is further electrically connected to the water inlet pressure regulator 2, and is used for controlling and regulating the output pressure of the water inlet pressure regulator 2 so as to complete the test of the required pressure.

The preferred arrangement also includes a porous plate 9 having a hydrophobic surface to facilitate the formation of water droplets in an aggregate form to enhance recognizability.

Based on the arrangement, the whole test process can be automatically performed and the test result can be recorded, so that the requirement on manpower is greatly reduced.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A hydrostatic pressure tester, comprising:

at least one test module (1-1, 1-2, 1-3), each of the at least one test module (1-1, 1-2, 1-3) comprising a water-collecting shell (8), a porous plate (9) and a fastener (10), the water-collecting shell (8) and the porous plate (9) holding a sample (11) to be tested therebetween, the fastener (10) being for compressing the water-collecting shell (8) and the porous plate (9);

the water inlet pressure regulating device (2), the water inlet pressure regulating device (2) is used for supplying the adjustable constant-pressure test water to the water collecting shell (8);

-a pressure gauge (4), the pressure gauge (4) being adapted to determine and indicate a pressure value of the test water supplying an adjustable constant pressure to the water collection casing (8);

the method is characterized in that: still include camera (6) and computer (7), camera (6) are used for gathering the video image of catching perforated plate (9) and manometer (4) pressure indication face, and computer (7) are used for recording and discernment camera (6) gather the video image of catching.

2. The hydrostatic pressure tester of claim 1, wherein: the at least one test module (1-1, 1-2, 1-3) is specifically 3 and comprises a first test module (1-1), a second test module (1-2) and a third test module (1-3).

3. The hydrostatic pressure tester of claim 2, wherein: the outlet of the water inlet pressure regulating device (2) is communicated with a main water inlet pipe (3-1), a first water inlet branch pipe (3-2), a second water inlet branch pipe (3-3), a third water inlet branch pipe (3-4) and a pressure gauge branch pipe (3-5) are arranged on the main water inlet pipe (3-1), the first water inlet branch pipe (3-2), the second water inlet branch pipe (3-3) and the third water inlet branch pipe (3-4) are respectively communicated with a first test module (1-1), a second test module (1-2) and a third test module (1-3), and the pressure gauge branch pipe (3-5) is communicated with the pressure gauge (4).

4. A hydrostatic pressure tester according to claim 3, wherein: a first on-off electromagnetic valve (5-1), a second on-off electromagnetic valve (5-2) and a third on-off electromagnetic valve (5-3) are respectively arranged on the first water inlet branch pipe (3-2), the second water inlet branch pipe (3-3) and the third water inlet branch pipe (3-4).

5. The hydrostatic pressure tester of claim 4, wherein: the computer (7) is electrically connected with the first on-off electromagnetic valve (5-1), the second on-off electromagnetic valve (5-2) and the third on-off electromagnetic valve (5-3) and used for controlling the on-off of the first on-off electromagnetic valve (5-1), the second on-off electromagnetic valve (5-2) and the third on-off electromagnetic valve (5-3).

6. The hydrostatic pressure tester of claim 1, wherein: the porous plate (9) has a hydrophobic surface.

7. The hydrostatic pressure tester of any one of claims 1-6, wherein: the computer (7) is electrically connected with the water inlet pressure regulating device (2) and is used for controlling and regulating the output pressure of the water inlet pressure regulating device (2).