Water-blocking tape expansion performance testing device

Abstract

The utility model provides a water-blocking tape expansion performance testing device which comprises a cabinet body, a container, a cover plate, a slicing assembly, a measuring assembly, a water injection assembly and a control panel, and the slicing assembly, the control panel, the measuring assembly, the container and the water injection assembly are all arranged on the top face of the cabinet body. The slicing assembly is used for cutting the water-blocking tape; the container is in a hollow cylinder shape, and the water injection assembly is used for injecting water into the container. A water-blocking tape to be tested is placed in the container, the cover plate is placed in the container, and the cover plate is pressed on the water-blocking tape to be tested; the water-blocking tape to be detected absorbs water and expands, so that the cover plate moves upwards in the container; the measuring assembly is used for detecting the position of the cover plate; the measuring assembly and the water injection assembly are both connected with the control panel. Sample preparation is carried out through the slicing assembly, the water injection assembly controls the volume of the water injection rate each time, and the measuring assembly measures the rising height of the cover plate in real time, so that the working efficiency is improved, and the test error is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water-blocking tape testing equipment, in particular to a water-blocking tape expansion performance testing device. Background Art

[0002] The water-blocking tape is one of the important parts in the cable. It can effectively block the penetration of moisture, avoid the damage of moisture to cable parts, improve the moisture-proof performance of the cable, extend the service life of the cable, and play a protective role for the cable. The water-blocking tape is composed of a polyester fiber non-woven fabric, a semi-conductive material, a high water-absorbing material, etc. It not only has excellent water-blocking performance, but also has heat resistance, chemical stability, etc.

[0003] T / CEEIA610-2022 "Semi-conductive Tape for Cable Buffer Layer with Rated Voltage of 110 kV and Above" stipulates the detection contents of the product, including thickness, single weight, width, expansion rate, expansion height, etc. Among them, the expansion rate and expansion height are one of the important indicators for judging the performance of the water-blocking tape. During the detection process, a test piece with a diameter of 80 mm needs to be cut out, placed in a container, then 150 mL of deionized water is injected, and then the time is recorded and the rising distance is measured. Finally, the expansion rate and expansion height of the test piece are obtained. However, in actual operation, it is difficult for the experimenter to ensure that the diameter of each test piece is the same during the process of cutting the sample, and the efficiency is low. Therefore, there is an urgent need to design a water-blocking tape expansion performance testing device for measuring the expansion performance of the water-blocking tape and improving the work efficiency. Summary of the Utility Model

[0004] In view of the above-mentioned disadvantages of the prior art, the technical problem to be solved by the utility model is to provide a water-blocking tape expansion performance testing device for improving the measurement accuracy and measurement efficiency of the expansion rate and expansion height of the water-blocking tape.

[0005] To achieve the above object, the utility model provides a water-blocking tape expansion performance testing device, which includes a cabinet, a container, a cover plate, a slicing assembly, a measuring assembly, a water injection assembly, and a control board. The slicing assembly, the control board, the measuring assembly, the container, and the water injection assembly are all arranged on the top surface of the cabinet. The slicing assembly is used for cutting the water-blocking tape. The container is in the shape of a hollow cylinder, and the water injection assembly is used for injecting water into the container. The water-blocking tape to be tested is placed in the container, and the cover plate is placed in the container and presses on the water-blocking tape to be tested. The water-blocking tape to be tested absorbs water and expands, causing the cover plate to move upward inside the container. The measuring assembly is used for detecting the position of the cover plate. The measuring assembly and the water injection assembly are both connected to the control board.

[0006] Preferably, the slicing assembly includes a first ring, a second ring, and a bottom plate. The first ring is sleeved inside the second ring, and both are disposed on the top surface of the bottom plate. The bottom of the first ring is detachably connected with an annular blade.

[0007] Preferably, the inner diameter of the first ring is the same as the inner diameter of the container.

[0008] Preferably, the outer diameter of the cover plate matches the inner diameter of the container.

[0009] Preferably, a plurality of through holes penetrating in the up and down direction are formed on the top surface of the cover plate.

[0010] Preferably, the measuring assembly includes a support frame and a probe. The probe is disposed on the support frame and is directly above the cover plate.

[0011] Preferably, the water injection assembly includes a base and a water inlet pipe. A water bucket is disposed inside the cabinet body, and the water bucket is connected with the water inlet pipe. The base is disposed on the top surface of the cabinet body, and the water inlet pipe is disposed on the base for injecting water into the container.

[0012] Preferably, the support frame is rotatably connected to the top surface of the cabinet body; the base is rotatably connected to the top surface of the cabinet body.

[0013] Preferably, the water injection assembly further includes a flow valve, and the flow valve is connected with the control board for controlling the volume of the injected water.

[0014] Preferably, a water volume module, a timing module, a measuring module, and a display module are provided in the control board. The water volume module is used for adjusting the volume of the water injected each time; the timing module is used for recording the time when the water-blocking belt to be tested is immersed in water; the measuring module is used for monitoring the position of the cover plate in real time; the display module is used for observing the test results of the water-blocking belt to be tested.

[0015] As described above, the water-blocking belt expansion performance testing device involved in the present utility model has the following beneficial effects:

[0016] 1. A slicing assembly is provided in the present utility model for quickly cutting the water-blocking belt, which not only improves the working efficiency, but also ensures the size of the circular test piece cut from the water-blocking belt, avoiding the problem of low test accuracy caused by the size error of the circular test piece of the water-blocking belt. At the same time, the annular blade and the first ring are detachably connected, which is convenient for replacing the annular blade and ensuring the smoothness of cutting the water-blocking belt.

[0017] 2. A measuring assembly is provided in the present utility model. The measuring assembly is in communication connection with the control board, and can automatically collect the rising distance of the cover plate, improve the accuracy of the data, and thus reduce the error.

[0018] 3. A water injection component is provided in the present utility model, which is convenient to operate. A flow valve is provided in the water injection component, and the water injection component is communicatively connected to the control board, which can ensure that the water injection volume is the same in each test process and avoid the deviation of test results caused by the error of water injection volume. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the water-blocking belt expansion performance test device of the present utility model;

[0020] Figure 2 is a schematic structural diagram of the slicing component in the water-blocking belt expansion performance test device of the present utility model;

[0021] Figure 3 is a schematic diagram of the container and the cover plate in the water-blocking belt expansion performance test device of the present utility model.

[0022] Description of the Reference Numerals:

[0023] 1. Cabinet; 2. Container; 3. Cover plate; 4. Water injection component; 5. Measuring component; 51. Support frame; 52. Probe; 6. Slicing component; 61. First ring; 62. Second ring; 63. Bottom plate; 64. Circular blade; 7. Control board. Detailed Embodiments

[0024] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0025] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions under which the present utility model can be implemented. Therefore, they do not have any technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and the like cited in this specification are only for convenient description and are not used to limit the scope under which the present utility model can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope under which the present utility model can be implemented.

[0026] The present utility model provides a water-blocking belt expansion performance test device. For the convenience of description, the length direction of the cabinet 1 is defined as the left-right direction, the width direction of the cabinet 1 is defined as the front-back direction, and the height direction of the cabinet 1 is defined as the up-down direction. Therefore, in Figure 1A spatial rectangular coordinate system is established, where the positive and negative directions of the X-axis are the left direction and the right direction respectively, the positive and negative directions of the Y-axis are the rear direction and the front direction respectively, and the positive and negative directions of the Z-axis are the upward direction and the downward direction respectively.

[0027] As Figures 1 - 3 shown, the present utility model provides a water-blocking strip expansion performance testing device, which includes a cabinet 1, a container 2, a cover plate 3, a slicing assembly 6, a measuring assembly 5, a water injection assembly 4, and a control board 7. The slicing assembly 6, the control board 7, the measuring assembly 5, the container 2, and the water injection assembly 4 are arranged on the top surface of the cabinet 1 in the left-to-right direction; the slicing assembly 6 is used for slicing the water-blocking strip; the container 2 is in the shape of a hollow cylinder, and the water injection assembly 4 is used for injecting water into the container 2; the water-blocking strip to be tested is placed in the container 2, and the cover plate 3 is placed in the container 2 and presses on the water-blocking strip to be tested; the water-blocking strip to be tested absorbs water and expands, causing the cover plate 3 to move upward inside the container 2; the measuring assembly 5 is used for detecting the position of the cover plate 3; both the measuring assembly 5 and the water injection assembly 4 are connected to the control board 7.

[0028] Regarding the water-blocking strip expansion performance testing device of the present utility model, the slicing assembly 6 can quickly cut the water-blocking strip. The cut water-blocking strip is a circular test piece of the water-blocking strip, that is, the water-blocking strip to be tested; the slicing assembly 6 ensures that the size of the cut water-blocking strip is qualified, ensuring the accuracy of the expansion performance test of the circular test piece of the water-blocking strip; the measuring assembly 5 is provided and connected to the control board 7. The measuring assembly 5 automatically collects the position of the cover plate 3 during the water absorption and expansion process of the circular test piece of the water-blocking strip, improving the accuracy of the data and reducing the error of the test results.

[0029] Preferably, as Figure 2 shown, the slicing assembly 6 includes a first ring 61, a second ring 62, and a bottom plate 63. The first ring 61 is sleeved inside the second ring 62, and both are arranged on the top surface of the bottom plate 63; a circular blade 64 is detachably connected to the bottom of the first ring 61. In this embodiment, the operator places the water-blocking strip on the bottom plate 63, then presses the second ring 62 on the water-blocking strip, then sleeves the first ring 61 from top to bottom into the inner diameter of the second ring 62, and rotates the first ring 61. The circular blade 64 at the bottom of the first ring 61 cuts a circular test piece from the water-blocking strip, and this circular test piece is the water-blocking strip to be tested.

[0030] Preferably, in this embodiment, the inner diameter of the first ring 61 is the same as the inner diameter of the container 2; thus, the diameter of the circular test piece cut by the circular blade 64 is the same as the inner diameter of the container 2, and the circular test piece can just be placed into the container 2.

[0031] Preferably, as Figure 3As shown, the outer diameter of the cover plate 3 matches the inner diameter of the container 2, ensuring that the cover plate 3 can move freely up and down in a straight line in the container 2; several through holes penetrating in the up and down direction are provided on the top surface of the cover plate 3, facilitating the water to pass through the cover plate 3 and fully contact the circular water-blocking tape test piece. In this embodiment, 60 through holes with a diameter of 2 mm are evenly distributed, the mass of the cover plate 3 is 51.3 g, and the cover plate 3 complies with the standard of T / CEEIA 610-2022 "Semiconducting Tape for Buffer Layer of Power Cables with Rated Voltage of 110 kV and Above".

[0032] Preferably, as Figure 1 shown, the measuring assembly 5 includes a support frame 51 and a probe 52. The probe 52 is arranged on the support frame 51 and is directly above the cover plate 3. In this embodiment, the probe 52 can adopt an infrared rangefinder; the probe 52 is communicatively connected to the control board 7, and the distance between the probe 52 and the cover plate 3 is measured by the probe 52, so as to calculate the rising height of the cover plate 3.

[0033] Preferably, as Figure 1 shown, the water injection assembly 4 includes a base and a water inlet pipe. A water bucket is arranged inside the cabinet body 1, and the water bucket is connected to the water inlet pipe to facilitate the supply of water source; the base is arranged on the top surface of the cabinet body 1, and the water inlet pipe is arranged on the base for injecting water into the container 2. In this embodiment, a cabinet door is also hinged to the front end of the cabinet body 1 for convenient replacement of the water bucket. The water injection assembly 4 further includes a water pump. One end of the water pump is inserted into the water bucket, and the other end is connected to the water inlet pipe. In this way, the water in the water bucket is injected into the container 2 through the water pump.

[0034] Furthermore, in this embodiment, the support frame 51 is rotatably connected to the top surface of the cabinet body 1; the base is rotatably connected to the top surface of the cabinet body 1. The purpose of setting the support frame 51 and the base to be rotatable is that when the circular water-blocking tape test piece and the cover plate 3 are placed into the container 2, the probe 52 and the water inlet pipe can be rotated to one side to avoid interference with the placement of the circular water-blocking tape test piece and the cover plate 3.

[0035] Preferably, in this embodiment, the water injection assembly 4 further includes a flow valve, and the flow valve is connected to the control board 7 for controlling the volume of the injected water.

[0036] Preferably, in this embodiment, the control board 7 is provided with a water volume module, a timing module, a measuring module, and a display module. The water volume module is used to adjust the volume of each injected water; the timing module is used to record the time when the water-blocking tape to be tested is immersed in water; the measuring module is used to monitor the position of the cover plate 3 in real time; the display module is used to observe the test results of the water-blocking tape to be tested. The water volume module is communicatively connected to the water pump and the flow valve; the measuring module is communicatively connected to the probe 52.

[0037] The working steps of the water-blocking tape expansion performance testing device involved in the present utility model are as follows:

[0038] S1: Place the water-blocking tape on the bottom plate 63, then press the second ring 62 on the water-blocking tape, and then insert the first ring 61 into the inside of the second ring 62, so that the annular blade 64 at the bottom of the first ring 61 abuts against the water-blocking tape. Rotate the first ring 61, and thus the annular blade 64 cuts the water-blocking tape to obtain a circular test piece of the water-blocking tape.

[0039] S2: Put the circular test piece of the water-blocking tape into the container 2, and press the cover plate 3 on the circular test piece of the water-blocking tape.

[0040] S3: Turn on the probe 52 of the measuring component 5 through the control board 7, and make the probe 52 face the cover plate 3. Then, zero the data of the probe 52 through the control board 7 to ensure that the measured distance starts from zero.

[0041] S4: Set the water injection volume to 150 mL through the control board 7, and the control board 7 controls the flow valve to inject the water in the water bucket into the container 2.

[0042] S5: The water contacts the circular test piece of the water-blocking tape through the through hole on the cover plate 3. As the circular test piece of the water-blocking tape absorbs water and expands, the cover plate 3 is pushed up. When the circular test piece of the water-blocking tape is immersed for 1 minute, record the displacement reading of the cover plate 3, and thus the expansion rate of the circular test piece of the water-blocking tape can be obtained. When the circular test piece of the water-blocking tape is immersed for 5 minutes, record the displacement reading of the cover plate 3, and thus the expansion height of the circular test piece of the water-blocking tape can be obtained.

[0043] Further, in step S4, when the water injection component 4 finishes injecting 150 mL of water into the container 2, the control board 7 controls the flow valve to close, and at the same time, the timing module on the control board 7 starts timing, so as to realize the timing in step S5.

[0044] The water-blocking tape expansion performance test device involved in the present utility model has the following beneficial effects:

[0045] 1. The control board 7 of the present utility model is provided with a water volume module, and the water volume module is connected to the water injection component 4. The operation is convenient, and it can ensure that the water injection volume is the same in each test, avoiding the error of the test result caused by the error of the water injection volume.

[0046] 2. The control board 7 of the present utility model is provided with a measurement module, and the measurement module is connected to the measurement component 5. It can automatically collect the rising distance of the cover plate 3, improve the accuracy of the data, and reduce the error caused by reading.

[0047] 3. The control board 7 of the present utility model is provided with a timing module, which can calculate the expansion rate and expansion height of the circular test piece of the water-blocking tape according to the immersion time of the circular test piece of the water-blocking tape, improving the work efficiency.

[0048] 4. The slicing assembly 6 is provided in the present utility model. The slicing assembly 6 can ensure the cutting size of the circular test piece of the water blocking tape, avoiding the error of the test accuracy caused by the error of the cutting size.

[0049] 5. The present utility model makes samples through the slicing assembly 6, the water injection assembly 4 controls the volume of the water injection each time, and the measuring assembly 5 measures the rising height of the cover plate 3 in real time, which not only improves the working efficiency but also reduces the test error.

[0050] In summary, the present utility model effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0051] The above embodiments are only illustrative of the principles and effects of the present utility model and are not used to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A water-blocking strip expansion performance testing device, characterized in that: It includes a cabinet body (1), a container (2), a cover plate (3), a slicing assembly (6), a measuring assembly (5), a water injection assembly (4), and a control board (7). The slicing assembly (6), the control board (7), the measuring assembly (5), the container (2), and the water injection assembly (4) are all arranged on the top surface of the cabinet body (1). The slicing assembly (6) is used to cut the water blocking tape. The container (2) is in the shape of a hollow cylinder, and the water injection assembly (4) is used to inject water into the container (2). The water blocking tape to be tested is placed in the container (2), and the cover plate (3) is placed in the container (2) and presses on the water blocking tape to be tested. The water blocking tape to be tested absorbs water and expands, causing the cover plate (3) to move upward inside the container (2). The measuring assembly (5) is used to detect the position of the cover plate (3). The measuring assembly (5) and the water injection assembly (4) are both connected to the control board (7).

2. The water-blocking tape expansion performance testing device according to claim 1, characterized in that: The slicing assembly (6) includes a first ring (61), a second ring (62), and a bottom plate (63). The first ring (61) is sleeved inside the second ring (62), and both are arranged on the top surface of the bottom plate (63). A circular blade (64) is detachably connected to the bottom of the first ring (61).

3. The water-blocking strip expansion performance testing device according to claim 2, characterized in that: The inner diameter of the first ring (61) is the same as the inner diameter of the container (2).

4. The water-blocking strip expansion performance testing device according to claim 1, characterized in that: The outer diameter of the cover plate (3) matches the inner diameter of the container (2).

5. The water-blocking strip expansion performance testing device according to claim 1, wherein: A number of through holes penetrating in the up and down direction are provided on the top surface of the cover plate (3).

6. The water-blocking strip expansion performance testing device according to claim 1, characterized in that: The measuring assembly (5) includes a support frame (51) and a probe (52). The probe (52) is arranged on the support frame (51) and is directly above the cover plate (3).

7. The water-blocking strip expansion performance testing device according to claim 6, characterized in that: The water injection assembly (4) includes a base and a water inlet pipe. A water bucket is arranged inside the cabinet body (1), and the water bucket is connected to the water inlet pipe. The base is arranged on the top surface of the cabinet body (1), and the water inlet pipe is arranged on the base for injecting water into the container (2).

8. The water-blocking tape expansion performance testing device according to claim 7, characterized in that: The support frame (51) is rotatably connected to the top surface of the cabinet body (1). The base is rotatably connected to the top surface of the cabinet body (1).

9. The water-blocking strip expansion performance testing device according to claim 7, wherein: The water injection assembly (4) further includes a flow valve, and the flow valve is connected to the control board (7) for controlling the volume of the injected water.

10. The water-blocking tape expansion performance testing device according to claim 1, characterized in that: The control board (7) is provided with a water volume module, a timing module, a measuring module, and a display module. The water volume module is used to adjust the volume of the water injected each time. The timing module is used to record the time when the water blocking tape to be tested is immersed in water. The measuring module is used to monitor the position of the cover plate (3) in real time. The display module is used to observe the test results of the water blocking tape to be tested.

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