Water impermeability testing device

Abstract

The utility model discloses a watertightness test device, including pressurization system, temperature control box, test piece and fixture portion, wherein pressurization system is connected with fixture portion, said fixture portion is provided in the temperature control box, fixture portion includes permeable tray and seal cover, and the permeable tray and the seal cover adopt detachable connection, the interior of permeable tray is provided with pressure inner chamber, and the pressure inner chamber is provided with the pressure inner chamber. A pressure inlet communicated with the pressure inner cavity is formed in the bottom of the water-permeable disc, two layers of rubber sealing rings and an exhaust hole are further arranged at the bottom of the water-permeable disc, a test piece is arranged at the top of the water-permeable disc, and a gland is arranged at the top of the test piece; by adopting the scheme of the utility model, air in the clamp can be completely exhausted, and the watertightness of the waterproof material can be accurately evaluated; and a detection basis and a proper tool are provided for researching the watertightness of the building waterproof material in a set temperature environment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to building waterproof material detection field, more specifically, the utility model relates to a kind of impermeability test device. BACKGROUND

[0002] Standard GB / T 328.10-2007 specifies the test method of impermeability of building waterproof roll material, and the test condition specified in the standard is carried out at (23±5) ℃, and when there is a dispute, it is carried out at (23±2) ℃ and relative humidity (50±5) %.

[0003] Patent No. 201921507499.X entitled "a waterproof roll impermeable instrument" discloses a waterproof roll impermeable instrument, which comprises a pressure tank provided with a water injection pipe inside, a water permeable disc for placing a test piece, and a gland for pressing the test piece. The water permeable disc is arranged on the upper surface of the pressure tank, and the gland is arranged on the water permeable disc and detachably connected with the water permeable disc. A plurality of water permeable pipes are arranged in the water permeable disc, the bottom of the water permeable pipe is communicated with the water injection pipe, and a pressure regulating valve is arranged on the water permeable pipe for adjusting the water injection pressure. The impermeability test of waterproof roll under different pressures is realized, multiple water permeable discs do not need to be arranged at the same time, and the test area is reduced.

[0004] However, in the actual application process, it is found that the use environment of waterproof material is complex and changeable, and the standard and the above-mentioned prior art are not suitable for impermeability test under high temperature or low temperature, which leads to the lack of relevant test basis and suitable tooling for studying the impermeability of building waterproof material under very temperature environment. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to provide an impermeability test device under a set temperature environment.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows: an impermeability test device, comprising a pressurizing system, a temperature control box, a test piece and a clamp part, wherein the pressurizing system is connected with the clamp part, the clamp part is arranged inside the temperature control box, the clamp part comprises a water permeable disc and a cover, and the two are detachably connected, the water permeable disc is internally provided with a pressure inner cavity, the bottom of the water permeable disc is provided with a pressure inlet connected with the pressure inner cavity, and the bottom of the water permeable disc is further provided with two layers of rubber sealing rings and an exhaust hole, the test piece is arranged on the top of the water permeable disc, and the top of the test piece is provided with a gland.

[0007] The utility model discloses an impermeability test device, the water permeable disc and the cover are connected by bolts, and the corresponding positions of the water permeable disc and the cover are respectively provided with threaded holes and smooth round holes.

[0008] The utility model discloses a water impermeability testing device, the gland is divided into cross slit disc and seven hole disc, when the test piece is high molecular waterproofing membrane, the gland adopts cross slit disc, when the test piece is asphalt waterproofing membrane, the gland adopts seven hole disc.

[0009] The utility model discloses a water impermeability testing device, when the test piece is waterproof paint, the gland adopts seven hole disc, and a layer of metal net is arranged between the seven hole disc and the test piece, and the aperture of the metal net is 0.2mm.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. The utility model discloses a water permeable disc is provided with the air vent, so that the device can completely discharge the air in the clamp, and the water impermeability of waterproof material can be accurately evaluated.

[0012] 2. The utility model provides detection basis and suitable tooling for researching the water impermeability of building waterproof material under the set temperature environment.

[0013] The utility model will be described in more detail in connection with the drawings and examples. DRAWINGS

[0014] The contents expressed by each drawing of the specification and the marks in the drawing will be briefly described as follows:

[0015] Figure 1 It is the schematic diagram of the utility model;

[0016] Figure 2 It is the water permeable disc schematic diagram of the utility model;

[0017] Figure 3 It is the cover schematic diagram of the utility model;

[0018] Figure 4 It is the flow chart of the utility model;

[0019] The marks in the drawing are as follows: 1, test piece; 2, gland; 3, cover; 4, pressure inlet; 5, water permeable disc; 6, bolt; 7, air vent; 8, pressure cavity; 9, rubber sealing ring; 10, bolt hole; 11, round hole. DETAILED DESCRIPTION

[0020] The specific embodiments of the utility model will be described in detail below by comparing the drawings and the description of the examples, and the shape, structure, mutual position and connecting relationship between the parts, the function and working principle of each part, manufacturing process and operation and use method of the utility model are further described in detail, so as to help the technical personnel in the field to have more complete, accurate and deep understanding of the utility model concept and technical scheme of the utility model.

[0021] A water impermeability test device, comprising a pressurizing system, a temperature control box, a test piece and a clamp part, wherein the pressurizing system is connected with the clamp part, the clamp part is arranged inside the temperature control box, the clamp part comprises a water permeable disc 5 and a cover 3, and the water permeable disc 5 and the cover 3 are detachably connected, the water permeable disc 5 is internally provided with a pressure inner cavity 8, the bottom of the water permeable disc 5 is provided with a pressure inlet 4 communicated with the pressure inner cavity 8, and the bottom of the water permeable disc 5 is further provided with two layers of rubber sealing rings 9 and an air vent 7, the test piece 1 is arranged on the top of the water permeable disc 5, and the test piece 1 is provided with a gland 2 on the top; the water permeable disc 5 and the cover 3 are connected by bolts, and corresponding positions of the water permeable disc 5 and the cover 3 are respectively provided with threaded holes 10 and smooth round holes 11; the gland 2 is divided into a cross-slotted disc and a seven-hole disc, when the test piece 1 is a high polymer waterproof roll material, the cross-slotted disc is used as the gland 2, when the test piece 1 is an asphalt waterproof roll material, the seven-hole disc is used as the gland, and when the test piece 1 is a waterproof coating, the seven-hole disc is used as the gland 2, and a layer of metal mesh is further arranged between the seven-hole disc and the test piece 1, and the aperture of the metal mesh is 0.2 mm.

[0022] Working principle and method

[0023] The principle is that the building waterproof roll material and the building waterproof coating test piece 1 (the waterproof coating is a flow state or semi-flow state colloidal substance coated on the surface of the base layer, and a continuous film with certain elasticity and thickness is formed through solvent or water evaporation or chemical reaction between components; the waterproof roll material is a flexible building material product that can be rolled into a roll, and is generally divided into asphalt waterproof roll material and high polymer waterproof roll material. The waterproof coating and the waterproof roll material both belong to waterproof materials, and each has its own emphasis in actual application) is applied with a certain water pressure in a set temperature environment, and whether the test sample can keep water impermeable is detected. The working process is as shown in Figure 4 , and the test steps are as follows:

[0024] S1: Place the test piece 1 with the water-facing surface downward (the water in the water permeable disc enters the pressure inner cavity through the pressure inlet, and the side of the water in contact with the test sample is the water surface, and the waterproof material has the distinction between the water-facing surface and the backwater surface in actual application, and it is emphasized that the water-facing surface of the test sample is in contact with the water surface of the pressure inner cavity) on the water permeable disc 5, the cross-slotted disc is covered on the high polymer waterproof roll material, and the direction of one slit is parallel to the longitudinal direction of the roll material; the seven-hole disc is covered on the asphalt waterproof roll material; the metal mesh with the same size is arranged between the waterproof coating and the seven-hole disc, and the aperture of the metal mesh is 0.2 mm.

[0025] S2: Cover the cover 3, tighten the bolt 6 to fix the test piece 1, keep the air vent 7 screw cap in a relaxed state, apply a certain pressure, until the water in the water permeable disc 5 overflows from the air vent 7, completely discharge the air, and immediately tighten the air vent 7 screw cap.

[0026] S3: Put the fixture with test piece 1 into the temperature-controlled box with set temperature, and adjust the state for (60±10) min. Slowly pressurize to the specified pressure, and keep the pressure for (24±1) h or (30±2) min. If the keeping pressure time is specified, the deviation should not exceed 5% of the specified time.

[0027] S4: Observe the water permeation of test piece 1 during the test. After reaching the specified time, take the impermeable test piece fixture out of the temperature-controlled box, keep the pressure, and observe whether water seeps out of the non-water-facing surface. If the heating medium in the temperature-controlled box is water, the clear water on the non-water-facing surface should be wiped off first, and then the observation is performed. The whole process should be completed within 2 min.

[0028] The utility model is described above in combination with the drawings, and obviously, the specific implementation of the utility model is not limited by the above-mentioned mode. As long as various non-essential improvements are made by adopting the method concept and technical scheme of the utility model, or the concept and technical scheme of the utility model is directly applied to other occasions without improvement, all of them are within the protection scope of the utility model.

Claims

1. A water impermeability testing apparatus, comprising a pressurization system, a temperature control chamber, a specimen, and a fixture, wherein the pressurization system is connected to the fixture, characterized in that, The clamping part is located inside the temperature control chamber. The clamping part includes a water permeable plate and a cover, and the two are detachably connected. The water permeable plate has a pressure cavity inside, and a pressure inlet connected to the pressure cavity is located at the bottom of the water permeable plate. The bottom of the water permeable plate also has two layers of rubber sealing rings and an exhaust hole. The specimen is placed on the top of the water permeable plate, and a pressure cover is located on the top of the specimen.

2. The impermeability testing device according to claim 1, characterized in that, The permeable plate and the cover are connected by bolts, and threaded holes and smooth round holes are respectively provided at corresponding positions of the permeable plate and the cover.

3. The impermeability testing device according to claim 1, characterized in that, The pressure cap is divided into a cross-slit disc and a seven-hole disc. When the specimen is a polymer waterproof membrane, the pressure cap adopts a cross-slit disc, and when the specimen is an asphalt waterproof membrane, the pressure cap adopts a seven-hole disc.

4. The impermeability testing device according to claim 3, characterized in that, When the test specimen is a waterproof coating, the cap is a seven-hole disc, and a metal mesh with a pore size of 0.2 mm is also provided between the seven-hole disc and the test specimen.

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