CN221351122U - Seam impervious performance test device - Google Patents

Abstract

The application relates to the technical field of waterproof tests, in particular to a joint impermeability test device, which comprises: an upper cavity of the device, wherein the upper cavity of the device is provided with a liquid injection port; the device upper cavity is detachably connected with the bearing bottom plate; test piece awaits measuring, test piece awaits measuring includes: a first sheet and a second sheet attached to one side surface of the first sheet, the second sheet covering the first sheet, a test seam being formed between the first sheet and the second sheet; the other side surface of the second sheet material is attached to the receiving bottom plate. According to the seam impervious performance testing device provided by the application, the two layers of sheets are arranged in a layered manner and are concentrically arranged, so that a testing seam is positioned above the bottom sheet, gap filling is not required to be carried out on the dislocation position of the two layers of sheets, leakage at a non-testing position is avoided, testing failure is caused, and the real waterproof performance of a test piece to be tested cannot be obtained.

Description

Seam impervious performance test device

Technical Field

The application relates to the technical field of waterproof tests, in particular to a joint impermeability test device.

Background

At present, the waterproof coiled material is required to be subjected to lap joint waterproof test before being formally put into use so as to ensure that the waterproof performance of the waterproof coiled material can reach the standard of waterproof performance in industry. In the existing seam waterproof test process, two coiled materials are arranged in a staggered and layered mode, so that a lap seam is formed between the two coiled materials, when two coiled materials are bonded by an adhesive, a gap is formed between the lower surface of an upper coiled material and a lower coiled material due to the fact that a height difference exists, butyl adhesive tape or a two-component polyurethane waterproof coating and other materials are required to be used for filling the gap, but in the actual test process, because filling materials, adhesive materials and sealing materials are all different materials, after the test coiled materials are pressed, non-test positions, namely the joint filling positions of the filling materials, are easy to be subjected to water seepage, the test results are affected, and the real waterproof performance of the test coiled materials is difficult to judge.

Disclosure of utility model

The application aims to provide a joint impermeability test device, which solves the technical problems that water seepage and water leakage occur in non-test positions easily to cause test failure and the real waterproof performance of a test coiled material is difficult to judge in the prior art to a certain extent.

The application provides a joint impermeability test device, comprising: the device comprises an upper cavity, a lower cavity and a lower cavity, wherein the upper cavity is provided with a liquid injection port;

the device upper cavity is detachably connected with the bearing bottom plate;

The test piece awaits measuring, the test piece awaits measuring includes: a first sheet and a second sheet attached to one side surface of the first sheet, the second sheet covering the first sheet, a test seam being formed between the first sheet and the second sheet;

the other side surface of the second sheet material is attached to the receiving bottom plate.

In the above technical solution, further, the first sheet has a circular sheet-like structure;

The second sheet has a circular sheet-like structure, and the area of the second sheet is larger than that of the first sheet; the first sheet and the second sheet are concentrically arranged, and the first sheet and the second sheet are mutually attached;

The second sheet material is arranged on one side surface of the bearing bottom plate facing the upper cavity of the device, and the second sheet material is mutually attached to the bearing bottom plate.

In any of the above embodiments, further, the first sheet and the second sheet are fixed by a first adhesive layer; the second sheet and the bearing bottom plate are fixed through a second bonding layer.

In any of the above technical solutions, further, an edge of the second sheet is pressed between the device upper cavity and the receiving bottom plate; the second sheet is provided with an observation hole.

In any of the above solutions, further, the device upper chamber further includes:

The discharge port is arranged at intervals with the liquid injection port;

The pressure measuring device is arranged at intervals with the discharge port and the liquid injection port and is used for detecting the pressure of liquid injected into the upper cavity of the device through the liquid injection port.

In any of the above technical solutions, further, an accommodating cavity is formed in the upper cavity of the device;

The opening edge of the containing cavity is provided with a fixing flange, and the fixing flange is used for being connected with the bearing bottom plate.

In any of the above technical solutions, further, the receiving bottom plate has a flat plate structure, and the fixing flange is provided with a plurality of first connection holes; the position of the bearing bottom plate facing the first connecting hole is provided with a second connecting hole, and the first connecting hole is connected with the second connecting hole through a fastener.

In any of the above technical solutions, further, the joint impermeability test apparatus further includes a sealing member, where the upper chamber of the apparatus is in a connection state with the receiving bottom plate, and the sealing member is disposed between the fixing flange and the receiving bottom plate.

In any of the above technical solutions, further, a limiting groove is formed on a surface of the fixing flange, which is attached to the receiving bottom plate, and the limiting groove is used for fixing the sealing element;

The number of the limit grooves is at least one, and when the number of the limit grooves is more than one, all the limit grooves are concentrically arranged.

In any of the above technical solutions, further, the receiving bottom plate is provided with at least one observation hole.

Compared with the prior art, the application has the beneficial effects that:

The application provides a joint impermeability test device, which comprises: an upper cavity of the device, wherein the upper cavity of the device is provided with a liquid injection port; the device upper cavity is arranged on the bearing bottom plate and is detachably connected with the bearing bottom plate; the test piece to be tested is arranged between the upper cavity of the device and the bearing bottom plate; the test piece to be tested comprises: the first sheet and the second sheet that laminates with first sheet, first sheet sets up in the upper surface of second sheet to the second sheet covers first sheet, and second sheet laminates with accepting the bottom plate, forms the test seam between first sheet and the second sheet.

According to the seam impervious performance testing device provided by the application, the two layers of sheets are arranged in a layered manner and are concentrically arranged, so that a testing seam is positioned above the bottom sheet, gap filling is not required to be carried out on the dislocation position of the two layers of sheets, leakage at a non-testing position is avoided, testing failure is caused, and the real waterproof performance of a test piece to be tested cannot be obtained.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of an upper housing of a seam permeation resistant performance test unit according to an embodiment of the present application;

FIG. 2 is a schematic view of a portion of the structure of an upper housing of a seam permeation resistant performance test device according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a test piece to be tested of the joint impermeability test device according to an embodiment of the present application;

FIG. 4 is a schematic view of a receiving base plate of a seam permeation resistant performance test unit according to an embodiment of the present application;

fig. 5 is a cross-sectional view taken along A-A of fig. 4.

Reference numerals:

1-device upper cavity, 2-liquid injection port, 3-pressure measuring device, 4-discharge port, 5-fixed flange, 6-limit groove, 7-bearing bottom plate, 8-first connecting hole, 9-observation hole, 10-first sheet, 11-first bonding layer, 12-second sheet, 13-second bonding layer, 14-sealing ring, 15-observation hole, 16-second connecting hole and 17-third connecting hole.

Detailed Description

The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the application are shown.

The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying 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 application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

A seam permeation resistance test unit according to an embodiment of the present application is described below with reference to fig. 1 to 5.

Referring to fig. 1 to 5, an embodiment of the present application provides a joint impermeability test apparatus, which includes an apparatus upper chamber 1, a receiving base plate 7, and a test piece to be tested, wherein the apparatus upper chamber 1 has a cover structure, the apparatus upper chamber 1 is detachably connected with the receiving base plate 7, and the test piece to be tested is disposed on the receiving base plate 7, so that after the apparatus upper chamber 1 is completely connected with the receiving base plate 7, the test piece to be tested is disposed on an inner wall surface of the receiving base plate 7 and is located in a closed cavity formed by the apparatus upper chamber 1 and the receiving base plate 7 together, so as to perform joint test on the test piece to be tested.

Specifically, the upper chamber 1 of the device is provided with a hemispherical shell structure, the upper chamber 1 of the device is provided with a liquid injection port 2 and a discharge port 4, the liquid injection port 2 and the discharge port 4 are arranged at the center of the top of the upper chamber 1 of the device, water can be injected into the upper chamber 1 of the device through the liquid injection port 2, the injected water is used for performing joint waterproof test on a test piece to be tested, the discharge port 4 is kept open in the process of injecting water into the upper chamber 1 of the device, along with the increase of the injected water, air in a closed cavity between the upper chamber 1 of the device and a receiving bottom plate 7 is gradually emptied until a small amount of water flows out from the discharge port 4, the discharge port 4 is closed, and after the test is finished, the water in the closed cavity can be discharged outside the joint waterproof performance test device through a mode of externally connecting the discharge port 4 with a pump body. After the discharge port 4 is closed, water is continuously injected into the upper cavity 1 of the device so that the water pressure in the closed cavity is changed, and therefore the test piece to be tested is pressurized and waterproof. More preferably, the outer diameter of the upper device cavity 1 near the opening is preferably 320mm, and the height of the upper device cavity 1 is preferably 100mm.

Further, the joint impermeability test device further comprises a pressure measuring device 3, and preferably the pressure measuring device 3 is a pressure gauge. The measuring probe of the pressure measuring device 3 extends to the inside of the upper cavity 1 of the device to measure the water pressure in the closed cavity, so as to judge the test pressure of the test piece to be tested according to the detection result, and determine whether the water injection needs to be continued or not to increase the test pressure according to the detection result. Preferably, the device upper chamber 1 has a predetermined pressure-bearing capacity, and the device upper chamber 1 is capable of withstanding a pressure of at least 0.5 Mpa. Preferably, the measuring range of the pressure measuring device 3 is 0-1.6Mpa, and the accuracy level of the pressure measuring device 3 is 2.5 level.

The device upper cavity 1 is internally provided with a containing cavity, the bottom of the containing cavity is provided with an opening, the edge of the opening is provided with a fixing flange 5, the fixing flange 5 is used for being connected with a bearing bottom plate 7, and after the device upper cavity 1 is fixed on the bearing bottom plate 7, the end face of the opening and the fixing flange 5 are attached to the upper plate surface of the bearing bottom plate 7. The fixed flange 5 is provided with a plurality of first connecting holes 8, the first connecting holes 8 are arranged on the fixed flange 5 at equal intervals, preferably, the number of the first connecting holes 8 is 12, the opening of the upper cavity 1 of the device is circular, the fixed flange 5 is arranged along the circumferential direction of the opening, therefore, the fixed flange 5 is circular, the 12 first connecting holes 8 are arranged along the central line of the side surface of the fixed flange 5, and the center distance between the two first connecting holes 8 distributed along any one diameter of the fixed flange 5 is preferably 360mm.

Further, the receiving base plate 7 is preferably a steel plate, the material of the receiving base plate 7 is preferably Q235, the outer diameter of the receiving base plate 7 is preferably 380mm, and the thickness of the receiving base plate 7 is 20mm or more, preferably 20mm. The edge of the receiving bottom plate 7 is provided with a plurality of second connecting holes 16 along the circumferential direction of the receiving bottom plate 7, the number of the second connecting holes 16 is the same as that of the first connecting holes 8, and after the device upper cavity 1 is mounted on the receiving bottom plate 7, each second connecting hole 16 is opposite to one first connecting hole 8 so as to penetrate a fastener to fix the device upper cavity 1 and the receiving bottom plate 7. In the present embodiment, the number of the second connecting holes 16 is also 12, and preferably, between the first connecting holes 8 and the second connecting holes 16, one of them is an M12 threaded hole, and the above-mentioned fastening member may be a bolt.

Further, the receiving base plate 7 is provided with an observation hole 9, and the observation hole 9 penetrates through the upper and lower surfaces of the receiving base plate 7. The number of the observation holes 9 is plural, preferably, in the present embodiment, the number of the observation holes 9 is four, and the four observation holes 9 are arranged on a circle having a diameter of 50mm centered on the center of the receiving bottom plate 7 at equal intervals, preferably, the diameter of each observation hole 9 is 6mm.

Further, the joint impermeability test device further comprises a sealing element, and the sealing element can be an annular structure made of rubber materials. Furthermore, the end surface of the fixing flange 5 facing the receiving bottom plate 7 is provided with a limit groove 6, and the sealing element is arranged in the limit groove 6, so that the sealing effect of the joint position of the upper cavity 1 of the device and the receiving bottom plate 7 can be effectively improved by arranging the sealing element, and water seepage and water leakage at the joint position between the upper cavity 1 and the receiving bottom plate 7 are avoided.

Preferably, the number of the limit grooves 6 is plural, as shown in fig. 2, in this embodiment, the number of the limit grooves 6 is preferably three, three limit grooves 6 are concentrically arranged, the number of the sealing members is the same as the number of the limit grooves 6, and one sealing member is arranged in each limit groove 6.

Further, the test piece to be tested comprises a first sheet 10 and a second sheet 12, the first sheet 10 and the second sheet 12 are made of waterproof coiled materials which need to be subjected to seam waterproof test, preferably, the first sheet 10 and the second sheet 12 are in round sheet shapes, the diameter of the second sheet 12 is larger than that of the first sheet 10, and when the first sheet 10 is placed on the second sheet 12, a step seam is formed between the first sheet 10 and the second sheet 12, and the step seam is the test seam. Preferably, the diameter of the first sheet 10 is preferably 220mm and the diameter of the second sheet 12 is preferably 380mm.

The edge of the second sheet 12 is provided with third connecting holes 17 at positions opposite to the first connecting holes 8 and the second connecting holes 16, the number of the third connecting holes 17 is the same as and corresponds to the number of the first connecting holes 8 and the number of the second connecting holes 16 one by one, so that fasteners can be penetrated, and preferably, the diameter of the third connecting holes 17 is 13mm.

In addition, the central position of the second sheet 12 is provided with an observation hole 15, after the first sheet 10 and the second sheet 12 are adhered together by an adhesive, after the test upper cavity and the receiving bottom plate 7 are sealed and buckled, after water is injected into the closed cavity and water pressure is increased, the upper surface of the first sheet 10, the test seam and the upper surface of the second sheet 12 are subjected to water pressure, after a period of time or after the end of the test, observation is performed through the observation hole 15 under the first sheet 10, the second sheet 12 is observed to be wet or the observation hole 15 has water drops, the test seam between the first sheet 10 and the second sheet 12 cannot meet the waterproof requirement, if the second sheet 12 is free from abnormal, the explanation seam is free from water leakage, the test seam passes the seam leakage test, and preferably, the diameter of the observation hole 15 is 20mm. The adhesive is an adhesive existing in the prior art for being used in combination with a waterproof roll, for example, a cement-based adhesive.

Further, when manufacturing the sample to be tested, firstly, arranging a sealing ring 14 on the bearing bottom plate 7, and sticking an adhesive tape on the upper surface of the sealing ring 14; then, a thin layer of sealing material, which may be, but not limited to, waterproof glue, is coated on the convex portions of the upper and lower surfaces around the third connection hole 17 on the second sheet 12, and an adhesive tape is attached to the lower surface of the second sheet 12 after the sealing material is immobilized. The second sheet 12 is then adhered to the receiving base 7 by means of an adhesive used in combination with the first sheet 10 (and the second sheet 12) within the range defined by the seal ring 14, the seal ring 14 being capable of avoiding the adhesive from overflowing and exhausting air from the adhesive to ensure sufficient adhesion of the second sheet 12 to the upper surface of the receiving base 7, preferably the second adhesive layer 13 formed by the adhesive between the second sheet 12 and the receiving base 7, the thickness of the second adhesive layer 13 being preferably 1.3mm, and the adhesive tape being removed after the adhesive has been completely immobilized. Preferably, the curing time of the adhesive is not less than 36 hours, and after the adhesive is completely cured, the second sheet 12, the second adhesive layer 13 and the receiving bottom plate 7 are tightly attached, so that the sealing performance is excellent, and the influence of water seepage at the non-test joint position on the test process and the test result is avoided. More preferably, the second sheet 12, which is circular in shape, is arranged centrally with respect to the receiving bottom 7, which is circular in shape.

Also, the first sheet 10 is adhered above the second sheet 12 in a centered manner by an adhesive, preferably, the first adhesive layer 11 is formed after the adhesive applied between the first sheet 10 and the second sheet 12 is cured, the thickness of the first adhesive layer 11 is preferably 1.3mm, and after the adhesive is completely cured, the first sheet 10, the second adhesive layer 13 and the second sheet 12 are closely adhered with excellent sealability. The second adhesive layer 13 is provided with a through hole at a position corresponding to the observation hole 15.

Preferably, to ensure the number of samples during the test, the number of first sheets 10 is plural, the number of second sheets 12 is plural, and preferably, the number of first sheets 10 and the number of second sheets 12 are three, and three samples to be tested are prepared in the above-described arrangement.

The joint impermeability test device performs the following operations when testing:

(1) And preparing a test piece, namely preparing the waterproof coiled material to be tested into a test piece to be tested according to the mode.

(2) The test piece to be tested is arranged on the bearing bottom plate 7, a water source is checked, and water is ensured to be continuously injected into the sealed cavity through the liquid injection port 2, so that water pressure of 0-0.5Mpa can be continuously applied to the test piece to be tested; the temperature in the test laboratory was controlled at 23.+ -. 2 ℃ and the relative humidity was controlled at 50%.+ -. 10%.

(3) Maintaining the joint impermeability test device for 168 hours under the standard test condition that the temperature is 23+/-2 ℃ and the relative humidity is controlled to be 50+/-10% after a test piece to be tested is adhered on the bearing bottom plate 7, then fastening and fixing the upper cavity 1 of the device on the bearing bottom plate 7 by using bolts, ensuring that each bolt is uniformly stressed when the bolts are fastened, and screwing by adopting a symmetrical tightening mode when the nuts are used for locking the bolts.

(4) Opening a water source, injecting water into the closed cavity through the liquid injection port 2, gradually discharging air in the closed cavity, observing whether water seepage exists at a sealing part between the upper cavity 1 of the joint impermeability test device and the receiving bottom plate 7 along the circumferential direction of the joint impermeability test device, if water seepage exists, reinstalling bolts, if water seepage does not exist, slowly increasing the water pressure to 0.3Mpa, keeping for 30+/-2 minutes, and recording test results.

(5) The result shows that the three test pieces to be tested are sequentially tested repeatedly, and no leakage occurs in the three test pieces to be tested within the specified test time, so that the waterproof coiled material passes the seam leakage test.

In summary, according to the seam impermeability test device provided by the application, the two layers of sheets are arranged in a layered manner and are concentrically arranged, so that the test seam is positioned above the bottom sheet, gap filling is not required to be carried out on the dislocation position of the two layers of sheets, leakage at a non-test position is avoided, test failure is caused, and the real waterproof performance of a test piece to be tested cannot be obtained.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims (10)

1. A seam permeation resistant performance test set, comprising:

The device comprises an upper cavity, a lower cavity and a lower cavity, wherein the upper cavity is provided with a liquid injection port;

the device upper cavity is detachably connected with the bearing bottom plate;

The test piece awaits measuring, the test piece awaits measuring includes: a first sheet and a second sheet attached to one side surface of the first sheet, the second sheet covering the first sheet, a test seam being formed between the first sheet and the second sheet;

the other side surface of the second sheet material is attached to the receiving bottom plate.

2. The joint permeation resistant performance test mechanism of claim 1, wherein said first sheet has a circular sheet-like structure;

The second sheet has a circular sheet-like structure, and the area of the second sheet is larger than that of the first sheet; the first sheet and the second sheet are concentrically arranged, and the first sheet and the second sheet are mutually attached;

The second sheet material is arranged on one side surface of the bearing bottom plate facing the upper cavity of the device, and the second sheet material is mutually attached to the bearing bottom plate.

3. The seam permeation resistant performance test device of claim 1, wherein said first sheet and said second sheet are secured by a first adhesive layer; the second sheet and the bearing bottom plate are fixed through a second bonding layer.

4. The seam permeation resistant performance test device of claim 1, wherein an edge of said second sheet material is pressed between said device upper cavity and said receiving floor; the second sheet is provided with an observation hole.

5. The joint permeation resistant performance test device of claim 1, wherein said device upper chamber further comprises:

The discharge port is arranged at intervals with the liquid injection port;

The pressure measuring device is arranged at intervals with the discharge port and the liquid injection port and is used for detecting the pressure of liquid injected into the upper cavity of the device through the liquid injection port.

6. The joint permeation resistance test apparatus according to claim 1, wherein an interior of said apparatus upper chamber is hollow to form a cavity;

The opening edge of the containing cavity is provided with a fixing flange, and the fixing flange is used for being connected with the bearing bottom plate.

7. The joint permeation resistance test mechanism according to claim 6, wherein said receiving base plate has a flat plate structure, and said fixing flange is provided with a plurality of first connection holes; the position of the bearing bottom plate facing the first connecting hole is provided with a second connecting hole, and the first connecting hole is connected with the second connecting hole through a fastener.

8. The joint permeation resistant performance test device of claim 6, further comprising a seal disposed between the mounting flange and the receiving floor in a coupled state of the device upper chamber and the receiving floor.

9. The joint permeation resistant performance test apparatus according to claim 8, wherein a surface of said fixing flange, to which said receiving base plate is attached, is formed with a limit groove for fixing said seal member;

The number of the limit grooves is at least one, and when the number of the limit grooves is more than one, all the limit grooves are concentrically arranged.

10. The joint permeation resistance test apparatus according to any one of claims 2 to 6, wherein said receiving base plate is provided with at least one of the number of observation holes.