Water-blocking rate test equipment for water-blocking tape

Abstract

The utility model provides water-blocking tape water-blocking rate testing equipment, which belongs to the technical field of water-blocking tape testing and comprises a base provided with a groove for placing a sample to be tested; the mounting frame comprises two side supports and an upper support, and the two side supports are fixed to the upper end faces of the two sides of the base respectively; the upper bracket is fixedly connected with the upper ends of the two side brackets; the water flow sealing clamp is hung below the upper support through a rotating device, and when the base is clamped by the water flow sealing clamp, a sealed water flow space is formed between the water flow sealing clamp and the base; the water outlet end of the water supply device is arranged in the dead center of the water flow sealing clamp and communicated with the sealed water flow space. The device can be used for measuring the water flow inhibition speed of the water-blocking tape, overcomes the defects of an existing detection means, provides more scientific and reliable test equipment for performance evaluation of the water-blocking tape, and facilitates improvement of cable quality and reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of water-blocking tape testing, and particularly relates to a water-blocking rate test device for a water-blocking tape. Background Art

[0002] In the fields of wire and cable and many other industries, products often need to operate in a humid environment for a long time and sometimes even be directly immersed in water. For example, submarine cables, outdoor power transmission lines, industrial pipeline systems, and building electrical facilities may all face environments with high humidity or underwater work. Under such conditions, the intrusion of moisture will not only affect the electrical performance of the products, but also accelerate the corrosion of metal components, shorten the service life of the products, and even cause serious safety accidents. Therefore, in order to ensure the long-term stable operation of these products, effective measures must be taken to prevent the intrusion of moisture.

[0003] Water-blocking materials and special structures are the key to solving this problem. Among them, the water-blocking tape, as a solution widely used in the field of wire and cable, plays an important role. The water-blocking tape is usually made of a water-absorbing and swelling material, which can quickly swell when contacting moisture, fill the voids inside the cable, and form an effective waterproof barrier. This design can not only prevent moisture from spreading along the inside of the cable, but also repair the tiny cracks caused by external damage to a certain extent, improving the overall sealing performance of the cable.

[0004] Although the water-blocking tape is very common in practical applications, there is still a lack of unified standard testing methods and test equipment for specifically evaluating its water-blocking effect and water-blocking speed. Most of the existing detection means are limited to simple water content testing and water penetration testing. Although these methods can provide some basic information, they cannot comprehensively and accurately reflect the actual application effect and true water-blocking performance of the water-blocking tape in the cable structure. For example, the water content test can only measure the ability of the water-blocking tape to absorb moisture, but cannot evaluate its water-blocking effect under dynamic conditions; the water penetration test is often carried out under static conditions and cannot simulate the complex environmental changes in actual use. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the defects of the prior art and provide a water-blocking rate test device for a water-blocking tape.

[0006] In order to achieve the above purpose and other purposes, the utility model is implemented by including the following technical solutions: the utility model proposes a water-blocking tape water-blocking rate test equipment, including a base, which is provided with a groove for placing the sample to be tested; a mounting frame, including two side brackets and an upper bracket, the two side brackets are respectively fixed on the upper end surfaces on both sides of the base; the upper bracket is fixedly connected to the upper ends of the two side brackets; a water flow sealing clamp is hoisted under the upper bracket through a rotating device, and when the water flow sealing clamp clamps the base, a sealed water flow space is formed between the water flow sealing clamp and the base; a water supply device, the water outlet end of which is arranged at the center of the water flow sealing clamp and is connected to the sealed water flow space.

[0007] In one embodiment, a sealing groove is provided on the circumferential surface of the lower end of the water flow sealing fixture, and a wave pattern flow channel is formed on the upper surface of the sealing groove.

[0008] In one embodiment, the water supply device includes a water tank, a control valve, a first pipe and a second pipe; the water tank is arranged above the center of the upper bracket through a track bracket, and the water outlet of the water tank faces the upper bracket; one end of the control valve is connected to the water outlet of the water tank through the first pipe, and the other end is connected to the water inlet end of the second pipe through the first pipe; the second pipe is passed through the center of the upper bracket, and the water outlet end thereof is arranged in the water flow sealing clamp and communicated with the sealed water flow space.

[0009] In one embodiment, the water stored in the water tank is distilled water or deionized water; and the control valve includes a water pressure gauge.

[0010] In one embodiment, the first pipe is a hydrolysis-resistant rubber pipe.

[0011] In one embodiment, the second pipe is a corrosion-resistant metal pipe.

[0012] In one embodiment, the track bracket includes two metal rods and a horizontal support frame, the lower ends of the metal rods are fixedly connected to the upper bracket, the horizontal support frame is slidably installed on the metal rods, and the water tank is installed on the horizontal support frame.

[0013] In one embodiment, a scale is provided on the inner side of the side bracket, and the accuracy of the scale is not less than 0.1 mm.

[0014] In one embodiment, a pointer is installed on the upper surface of the water flow sealing clamp, and the needle end of the pointer points to the scale.

[0015] In one embodiment, a water outlet groove is provided at one end of the groove in the length direction, and the water outlet groove connects the groove and the water outlet pipe.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. When the water-blocking tape water-blocking rate test equipment provided by the present utility model conducts the water-blocking performance test of the water-blocking tape, by measuring the speed at which the water-blocking tape inhibits the water flow, it can reflect the actual application conditions in a humid environment more than the prior art test methods that can only measure the water absorption and water content. At the same time, it can more intuitively and accurately evaluate the water-blocking effect of the water-blocking tape and the ability to inhibit the spread of moisture. It not only fills the deficiencies of the existing detection means, but also provides a scientific and reliable basis for the performance evaluation of the water-blocking tape, which helps to improve the product quality and reliability;

[0018] 2. When the present utility model is applied, since each test link includes sample pretreatment, and parameters such as water pressure, water flow control, and the distance between the base and the water flow sealing fixture are highly controllable, the influence factors of the external environment and the sample itself are relatively small, and the detection data has stronger repeatability;

[0019] 3. The sample method applied by the present utility model is more simple, fast, and has strong mobility; it is also not necessary to use an extremely precise electronic balance to estimate the water-containing weight of the sample, and the time and device cost consumed by the test device and the test process are lower;

[0020] 4. The present utility model is more suitable for the actual operation scenarios where the water-blocking tape in the cable is located;

[0021] 5. The present utility model has the characteristics of highly adjustable height, adjustable sealing thickness, and adjustable water flow, which makes the device highly operable, flexible, and has stronger data accuracy. It can be applied to the water-blocking performance of different cable category products, different category water-blocking materials, and even water-blocking materials in different fields, i.e., non-cable fields;

[0022] 6. The present utility model is more environmentally friendly. When using this device for testing, it is not necessary to use high-power test equipment or chemical reagents, and no hazardous waste chemical substances are generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It shows a structural schematic diagram of a water-blocking tape water-blocking rate test equipment of the present utility model.

[0024] Figure 2 It shows Figure 1 An enlarged view of part A in

[0025] Figure 3 It shows a structural schematic diagram of the placement base in the present utility model.

[0026] Figure 4 It shows a structural schematic diagram of the water flow sealing device in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Please refer to Figures 1 - 4 . The following describes the embodiments of the present utility model through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present utility model from the content disclosed in this specification.

[0028] 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 limited 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.

[0029] Unless otherwise defined, the technical terms or scientific terms used herein should be understood in the ordinary sense by those of ordinary skill in the field to which the present utility model belongs. The words such as "a", "one", or "the" used in the present utility model do not indicate a quantity limitation either, but only mean that there is at least one. Words such as "comprising" or "including" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The serial numbers assigned to the components in this specification itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. And the "connection" mentioned in the present invention, unless otherwise specified, includes both direct and indirect connections.

[0030] In order to avoid confusion with the present utility model, some well-known technical features in the art are not described.

[0031] Such as Figures 1 - 3As shown in the figure, this embodiment provides a water-blocking tape water-blocking rate test device, which includes a base 100, a mounting frame 200, a water flow sealing fixture 300, a rotating unit 400 and a water supply device 500. A groove 110 is provided on the base 100, and the groove 110 is used to place the specimen to be tested. The mounting frame 200 includes two side brackets 210 and an upper bracket 220. The two side brackets 210 are respectively fixed on the upper end faces of both sides of the base 100 and are used to support the upper bracket 220; the upper bracket 220 is fixedly connected to the upper ends of the two side brackets 210. The water flow sealing fixture 300 is hoisted below the upper bracket 220 through the rotating device 400. By rotating the rotating handle 410 of the rotating device 400 located above the upper bracket 220, the water flow sealing fixture 300 can move up and down relative to the upper bracket 220 to loosen or clamp the base 100; when the water flow sealing fixture 300 moves downward to clamp the base 100, a sealed water flow space can be formed between the water flow sealing fixture 300 and the base 100. The water outlet end of the water supply device 500 is arranged at the center of the water flow sealing fixture 300 and is communicated with the sealed water flow space for injecting water into the sealed water flow space to perform a water-blocking rate test.

[0032] As Figure 4 shown in the figure, the design of the water flow sealing fixture 300 mainly functions to seal the test water flow and achieve the effect of preventing the test water flow from overflowing. However, in order to improve the water flow mobility in the sealed water flow space formed by the water flow sealing fixture 300 and the base 100, a sealing groove 310 for preventing water flow from overflowing can be provided on the circumferential surface at the lower end of the water flow sealing fixture 300, and a wavy groove flow channel 320 is formed on the upper surface of the sealing groove 310, so that the water flow can freely flow in the sealed water flow space.

[0033] Specifically, the water supply device 500 includes a water tank 510, a control valve 520, a first pipeline 530 and a second pipeline 540; the water tank 510 is arranged above the center of the mounting frame 200 through a track bracket 550, and the water outlet of the water tank 510 faces the mounting frame 200; the water tank 510 can move up and down along the track bracket 550 to adjust the water supply pressure. One end of the control valve 520 is connected to the water outlet of the water tank 520 through the first pipeline 530, and the other end is connected to the water inlet end of the second pipeline 540 through the first pipeline 530; the second pipeline 540 passes through the center of the upper bracket 220, and its water outlet end is arranged in the water flow sealing fixture 300 and can be communicated with the sealed water flow space.

[0034] Further, in order to avoid corrosion of the test equipment or blockage of each water flow channel in the test equipment due to long-term generation of impurities, the water stored in the water tank 510 is distilled water or deionized water.

[0035] Further, the control valve 520 is used to control the on-off of the water flow and can adjust the water pressure according to the requirements of different products and application scenarios. The control valve 520 includes a water pressure gauge for observing the water pressure.

[0036] Further, the first pipe 530 is made of a hydrolysis-resistant rubber pipe material to avoid applying additional pressure during the water flow.

[0037] Further, the second pipe 540 is made of a corrosion-resistant metal material and penetrates through the water flow sealing fixture 300. The length of the second pipe 540 can be such that when the water flow sealing fixture 300 clamps the base 100, its upper end face is at least higher than the lower end face of the upper bracket 220.

[0038] Further, the track bracket 550 includes two corrosion-resistant metal rods 551 with a certain weighing capacity and a horizontal support frame 552. The lower ends of the metal rods 551 can be fixedly connected to the upper bracket 220, the horizontal support frame 552 is slidably installed on the metal rods 551, and the water tank 510 is installed on the horizontal support frame 552; the height of the horizontal support frame 552 is adjustable to meet different water pressure conditions.

[0039] Please refer to Figure 2 , in order to facilitate the measurement of the thickness of the specimen as a reference for evaluating the sealing performance, a scale 211 can be provided on the inner side of the side bracket 210, and the accuracy of the scale 211 is not less than 0.1 mm. Further, in order to facilitate reading the scale on the scale 211, a pointer 330 can be installed on the upper surface of the water flow sealing fixture 300, and the needle end of the pointer 330 points to the scale 211.

[0040] Refer to Figure 3 , the groove 110 on the base 100 is a rectangular groove, and a water outlet groove 120 is provided at one end in the length direction of the groove 110, and the water outlet groove 120 communicates the groove 110 with the water outlet pipe 130.

[0041] The specific process of measuring the water blocking rate using the water blocking rate test equipment provided in this embodiment is as follows:

[0042] S1. Take a water blocking tape (specimen) of a certain length. The specimen needs to be placed in an oven and dried for a period of time before the test to dry the moisture on its surface. The length of the specimen matches the groove 110 of the base 100;

[0043] S2. Rotate the rotary handle 410 to align the water flow sealing fixture 300 with the base 100 to seal the specimen, and at the same time observe the side pointer 330 and the scale 211.

[0044] S3. Fine-tune the rotary handle 410, observe the pointer 330 and the scale 211, so that the distance between the water flow sealing fixture 300 and the base 100 is the total thickness of the specimen.

[0045] S4. Adjust the height of the horizontal support frame 552 on the track support 550 according to the required test water flow pressure and speed to meet the test pressure requirements.

[0046] S5. Open the control valve 520 and adjust the water flow rate through the control valve 520 and observe the water pressure.

[0047] S6. After controlling the water flow for a period of time according to the test requirements, close the control valve 520.

[0048] S7. Rotate the rotary handle 410 to loosen the water flow sealing fixture 300, take out the specimen, and measure the length of the water flow intrusion and spread from the second pipe 540 to both sides of the specimen.

[0049] S8. Calculate the water blocking rate of the water blocking tape according to the test time and the length of the water flow intrusion and spread.

[0050] In summary, when the water blocking rate test equipment for the water blocking tape provided in this embodiment is used to test the water blocking performance of the water blocking tape, by measuring the speed at which the water blocking tape inhibits the water flow, compared with the existing test methods that can only measure the water absorption and water content, it can better reflect its actual application conditions in a humid environment. At the same time, it can more intuitively and accurately evaluate the water blocking effect of the water blocking tape and the ability to inhibit the spread of moisture. It not only fills the deficiencies of the existing detection means, but also provides a scientific and reliable basis for the performance evaluation of the water blocking tape, which helps to improve the product quality and reliability.

[0051] Therefore, the present utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value. 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 made 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 tape water-blocking rate test device, characterized in that Comprising a base on which a groove is provided for placing a specimen to be tested; a mounting rack including two side brackets and an upper bracket, the two side brackets being respectively fixed on the upper end faces of both sides of the base; the upper bracket is fixedly connected to the upper ends of the two side brackets; a water flow sealing clamp hoisted below the upper bracket by a rotating device, and when the water flow sealing clamp clamps the base, a sealed water flow space is formed between the water flow sealing clamp and the base; a water supply device, the water outlet end of which is arranged at the exact center of the water flow sealing clamp and is communicated with the sealed water flow space.

2. The water-blocking rate test equipment for the water-blocking tape according to claim 1, characterized in that A sealing groove is arranged on the circumferential surface at the lower end of the water flow sealing clamp, and a wavy groove channel is formed on the upper surface of the sealing groove.

3. The water-blocking rate test equipment for the water-blocking tape according to claim 1, wherein The water supply device includes a water tank, a control valve, a first pipe and a second pipe; the water tank is arranged above the exact center of the upper bracket through a track bracket, and the water outlet of the water tank faces the upper bracket; one end of the control valve is connected to the water outlet of the water tank through the first pipe, and the other end is connected to the water inlet end of the second pipe through the first pipe; the second pipe penetrates through the exact center of the upper bracket, and its water outlet end is arranged inside the water flow sealing clamp and is communicated with the sealed water flow space.

4. The water-blocking rate test equipment for the water-blocking tape according to claim 3, characterized in that, The water stored in the water tank is distilled water or deionized water; the control valve includes a water pressure gauge.

5. The water-blocking rate test equipment for the water-blocking tape according to claim 3, characterized in that, The first pipe is a hydrolysis-resistant rubber pipe.

6. The water-blocking rate test equipment for the water-blocking tape according to claim 3, characterized in that, The second pipe is a corrosion-resistant metal pipe.

7. The water-blocking rate test equipment for the water-blocking tape according to claim 3, characterized in that, The track bracket includes two metal rods and a horizontal support frame, the lower ends of the metal rods are fixedly connected to the upper bracket, the horizontal support frame is slidably installed on the metal rods, and the water tank is installed on the horizontal support frame.

8. The water-blocking rate test equipment for the water-blocking tape according to claim 1, characterized in that, A scale is arranged inside the side bracket, and the accuracy of the scale is not less than 0.1 mm.

9. The water-blocking rate test equipment for the water-blocking tape according to claim 8, characterized in that, A pointer is installed on the upper surface of the water flow sealing clamp, and the needle end of the pointer points to the scale.

10. The water-blocking rate test equipment for the water-blocking tape according to claim 1, characterized in that, An outlet through groove is arranged at one end in the length direction of the groove, and the outlet through groove communicates the groove with a water outlet pipe.

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