CN115290527A

CN115290527A - Building wall body anti-permeability nondestructive testing equipment considering wind-driven rain effect

Info

Publication number: CN115290527A
Application number: CN202111641179.5A
Authority: CN
Inventors: 傅军; 徐煜佳; 叶佳斌; 于悦
Original assignee: Zhejiang Sci Tech University ZSTU
Current assignee: Zhejiang Sci Tech University ZSTU
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-11-04

Abstract

The invention discloses a nondestructive testing device for impermeability of a building wall body considering a wind-driven rain effect. The nondestructive testing equipment for the impermeability of the building wall considering the wind-driven rain effect consists of a fixing system, a spraying system, a water pressure system, a wind pressure system and a backflow system, has the function of performing nondestructive testing on the impermeability of the wall, can simulate the authenticity of nature rainfall reduction testing, can meet the requirements of various testing modes by the linkage of the water pressure system and the wind pressure system, and realizes quantitative evaluation of the impermeability by combining the water source circulation function in an instrument with data measurement and reading. In addition, the instrument has the advantages of simple structure, convenience in operation, integrated design of functional components, high detection efficiency and wide application prospect.

Description

Building wall body anti-permeability nondestructive testing equipment considering wind-driven rain effect

Technical Field

The invention relates to the field of building wall detection, in particular to wind-driven rain effect considered building wall impermeability nondestructive detection equipment.

Background

The problem of wall leakage is always concerned about as a functional quality problem which is inferior to structural safety in use, but because of the lack of means of early warning in advance, the wall leakage is often found and repaired at a later stage, so that the enhancement of the prior control is particularly important, the wall leakage detection can be divided into two modes of natural rainfall and artificial rainfall simulation, because the time, the strength and the like of the natural rainfall are not controlled, the artificial rainfall simulation is generally adopted for detection, but the effect of accurately simulating various weather conditions on the wall leakage is still difficult, the strong rainfall in summer is often accompanied by strong typhoon in coastal areas of China, the influence of the wind-driven rain effect is required to be fully considered, and the existing building wall detection cannot meet the requirements of people.

In the existing detection instrument, if GWT is fixed with a wall to be detected in a drilling mode, permeability test is carried out on the surface layer of the wall, but certain damage can be caused to the wall, and Chinese patent with application number CN1393687A discloses a prefabricated outer wall waterproof test system.

Disclosure of Invention

The invention mainly aims to provide nondestructive testing equipment for impermeability of a building wall body considering a wind-driven rain effect, which can effectively solve the problems in the background art.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a consider building wall body impermeability nondestructive test equipment of wind-driven rain effect, includes fixed system, spraying system, hydraulic system, wind pressure system and return-flow system, the sucking disc sets up the both sides surface at spray set, the trachea is located the middle part of sucking disc, the vacuum pump is located tracheal one end surface, the inlet tube is located one side surface of water tank, the back flow sets up the opposite side surface at the water tank, booster water pump, filter equipment, flowmeter and manometer are located the middle part of inlet tube, filter equipment is located one side of booster water pump, the flowmeter is located one side of filter equipment, the manometer is located one side of flowmeter, spray set drenches the shower nozzle including the shower cover body, stainless steel connecting piece, observation window, air outlet, a water inlet, no. two water inlets, backward flow mouth, an air intake, no. two air intakes, sealing washer, PU pipe and water.

Preferably, the outer surfaces of two sides of the spraying cover body are provided with stainless steel connecting pieces, the outer surface of the front end of the spraying cover body is provided with an observation window, the inner surfaces of the periphery of the spraying cover body are provided with sealing rings, and the number of the stainless steel connecting pieces is four.

Preferably, the upper end surface that sprays the cover body is provided with air outlet, a water inlet and No. two water inlets, a water inlet is located one side of air outlet, no. two water inlets are located the opposite side of air outlet, the one side surface that sprays the cover body is provided with the air intake No. one, the opposite side surface that sprays the cover body is provided with the air intake No. two, the lower extreme surface that sprays the cover body is provided with the backward flow mouth, the rear end internal surface that sprays the cover body is provided with the PU pipe, the middle part of PU pipe is provided with water and drenches the shower nozzle.

Preferably, the outer surfaces of the two sides of the spraying device are fixedly connected with the outer surface of one side of the sucking disc, and the middle part of the sucking disc is fixedly connected with the outer surface of one side of the vacuum pump through an air pipe.

Preferably, the outer surface of one side of the water tank is detachably connected with the outer surface of the upper end of the spraying device through a water inlet pipe, and the outer surface of the other side of the water tank is detachably connected with the outer surface of the lower end of the spraying device through a return pipe.

Preferably, be provided with the air feed pipe between spray set and the wind pressure device, spray set can dismantle with the wind pressure device through the air feed pipe and be connected, the inlet tube can be dismantled with booster pump and be connected, the inlet tube can be dismantled with filter equipment and be connected, the inlet tube can be dismantled with the flowmeter and be connected, the inlet tube can be dismantled with the manometer and be connected.

Preferably, the outer surfaces of two sides of the spraying cover body are fixedly connected with the outer surface of one side of the stainless steel connecting piece, the outer surface of the front end of the spraying cover body is fixedly connected with the outer surfaces of the periphery of the observation window, and the inner surfaces of the periphery of the spraying cover body are fixedly connected with the outer surfaces of the periphery of the sealing ring.

Preferably, the cover body and air outlet fixed connection spray, the cover body and a water inlet fixed connection spray, the cover body and No. two water inlet fixed connection spray, the cover body and backward flow mouth fixed connection spray, the cover body and an air intake fixed connection spray, the cover body and No. two air intake fixed connection spray, the rear end internal surface that sprays the cover body and the outer wall fixed connection of PU pipe, the middle part of PU pipe and the rear end surface that water drenches the shower nozzle can be dismantled and be connected.

Compared with the prior art, the invention has the following beneficial effects: the invention realizes the nondestructive fixation between the spraying system and the wall body through the sponge vacuum chuck, comprehensively considers the combination of the wind-driven rain effect and the circulating system, can simulate the rainfall under various working condition combination conditions, leads the artificial simulation to be closer to the nature, realizes the cyclic utilization of the water source in the instrument, avoids the waste of the water source, obtains the water loss amount of each stage by measuring and reading the height of the water column, and realizes the crossing of the qualitative detection and the quantitative detection.

Drawings

FIG. 1 is a schematic view of the overall structure of a nondestructive testing device for impermeability of a building wall body considering the wind-driven rain effect of the present invention;

FIG. 2 is a schematic structural view of the nondestructive testing equipment for impermeability of a building wall in consideration of wind-driven rain effect of the present invention, and the spraying device 4 in FIG. 1;

FIG. 3 is a schematic view of the inner structure of the non-destructive testing apparatus for impermeability of a building wall in consideration of wind-driven rain effect of the present invention, the spraying device 4 in FIG. 1;

FIG. 4 is a schematic composition diagram of a nondestructive testing apparatus for impermeability of a building wall in consideration of wind-driven rain effect according to the present invention.

FIG. 5 is a component parameter diagram of the nondestructive testing equipment for the impermeability of a building wall body considering the wind-driven rain effect.

In the figure: 1. a suction cup; 2. an air pipe; 3. a vacuum pump; 4. a spraying device; 5. a booster water pump; 6. a filtration device; 7. a flow meter; 8. a pressure gauge; 9. a water inlet pipe; 10. a return pipe; 11. a water tank; 12. a wind pressure device; 401. a spraying cover body; 402. a stainless steel connector; 403. an observation window; 404. an air outlet; 405. a first water inlet; 406. a second water inlet; 407. a return port; 408. a first air inlet; 409. a second air inlet; 410. a seal ring; 411. a PU pipe; 412. a water shower nozzle.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1, a nondestructive testing device for impermeability of a building wall considering a wind-driven rain effect, which comprises a fixing system, a spraying system, a hydraulic system, a wind pressure system and a backflow system, wherein a sucker 1 is arranged on the outer surfaces of two sides of a spraying device 4, a gas pipe 2 is arranged in the middle of the sucker 1, a vacuum pump 3 is arranged on the outer surface of one end of the gas pipe 2, a water inlet pipe 9 is arranged on the outer surface of one side of a water tank 11, a backflow pipe 10 is arranged on the outer surface of the other side of the water tank 11, a booster water pump 5, a filtering device 6, a flowmeter 7 and a pressure gauge 8 are arranged in the middle of the water inlet pipe 9, the filtering device 6 is arranged on one side of the booster water pump 5, the flowmeter 7 is arranged on one side of the filtering device 6, the pressure gauge 8 is arranged on one side of the flowmeter 7, the spraying device 4 comprises a spraying cover body 401, a stainless steel connecting piece 402, an observation window 403, an air outlet 404, a first water inlet 405, a second water inlet 406, a second water inlet 407, a first air inlet 408, a second air inlet 409, a sealing ring 410, a PU pipe 411 and a water spraying nozzle 412.

Example two:

on the basis of the first embodiment, as shown in fig. 2, the spraying system mainly comprises a spraying cover body 401, a water distributor and a sealing ring 410, and research shows that the mortar joint is a weak part of a masonry structure, the size of the spraying cover body 401 is determined to be length multiplied by height multiplied by width =300 multiplied by 600 multiplied by 5mm in order to cover most transverse and vertical mortar joints of a wall body during detection, because the spraying device 4 is fixed to the wall body without damage through a sponge suction cup 1, the self weight of the spraying device 4 is reduced as much as possible under the premise of a certain suction force, the spraying cover body 401 is selected to be made of stainless steel and 1mm in thickness under the premise of comprehensively considering portability and durability, when the wall body is sprayed, the spraying condition of the wall surface needs to be observed, an observation window 403 needs to be arranged under the premise of not damaging water tightness, the window material is selected from specially processed organic glass material, the sealing ring 410 has the advantages that the sealing ring has good sealing performance and moderate rigidity, has certain elastic deformation capability and sufficient wear resistance, and adopts an embedded steel sheet type sealing strip after comparison, the steel sheet provides high rigidity to enable the steel sheet to be tightly attached to a wall surface, and the wear resistance of rubber can prolong the service life of the rubber.

Example three:

on the basis of the first embodiment, as shown in fig. 1, the hydraulic system is composed of a booster water pump 5, a flowmeter 7 and a water hose, and has the main functions of regulating water pressure, enabling the spraying system to simulate the scouring and permeating of different rainfall conditions on the wall body and monitor the flow rate, wherein the booster water pump 5 is an intelligent variable frequency water pump, the maximum pressure is 400KPa, the pressure regulation precision is 5KPa, the flowmeter 7 is arranged at the front end of a water outlet and inlet, the whole spraying flow rate can be monitored, the water pipe is a PVC transparent steel wire hose of DN20, the pipe diameter can be closely connected with a water outlet of the water pump and the water inlet of the spraying pipe, the rigidity of the water pipe can be enhanced by a built-in threaded steel wire, the influence on water outlet caused by the fact that the suction force near the pump end is too large during water pumping is avoided, after the booster water pump is started, the water in the water tank 11 is pumped to the water inlet of the spraying system through the water pipe, and then the wall body is scoured through the water sprinkling sprayer 412.

Example four:

on the basis of the first embodiment and the second embodiment, as shown in fig. 1, the air pressure system mainly comprises an air compressor, a micro pressure regulator, an air supply pipeline and a straight-through pneumatic connector, and the main function of the air pressure system is to simulate the influence of natural straight air on the permeation situation, wherein the air compressor is a segmented medium-sized low-pressure air compressor, the micro pressure regulator is assembled for realizing the gradient pressure regulation of the air compressor, the pressure regulation precision is 10KPa, in addition, a first air inlet 408 and a second air inlet 409 of the straight-through pneumatic connector are arranged on the left side and the right side of the spraying cover body 401, any interface can be selected according to the site detection position condition for carrying out air pressure loading, when the air pressure system is started, the straight air enters the spraying cover body 401 through the air supply pipeline between the air inlets and the air compressor, the driving effect of natural wind on rain is simulated, and then the air leaves the spraying cover body 401 through the air outlet 404.

Example five:

on the basis of the first embodiment and the third embodiment, as shown in fig. 1 and 4, a circulation system mainly comprises a water tank 11, a filtering device 6 and a flowmeter 7, wherein the circulation system has the functions of realizing circulation of a water source inside an instrument and calculation of water seepage amount, and facilitating development of field work while saving water sources, the basic working steps of the system are that water in the water tank 11 is treated by the filtering device 6 and then is pumped to a water inlet of a spraying system by a booster pump 5, water flow after flushing a wall cannot flow out of a spraying cover body 401 due to existence of a sealing ring 410, at the moment, backflow water is collected and recovered to a middle backflow port 407 by utilizing a water conservancy gradient of 5 degrees at the bottom of the spraying cover body 401 and finally flows back to the water tank 11 through a water pipe to finish circulation, according to the principle of a communicating vessel, a transparent cylindrical thin water pipe attached with a scale is arranged on the outer side of the water tank 11, the height of the liquid level inside the water tank 11 can be synchronously measured and read, the precision is 1mm, and the change rule of the initial liquid level of the wall water amount can be calculated by reading and recording the liquid level of each time node of the water tank 11.

Example six:

on the basis of the first embodiment and the third embodiment, as shown in fig. 2 and 3, the working principle of the fixing system is that under the premise of not damaging the wall structure, the spraying system and the wall surface are fixed without damage through pressure difference, because most of the wall surface to be detected is provided with tiny air holes and is uneven locally, and belongs to non-smooth materials, the sponge sucker 1 has the advantages of good sealing performance and capability of adsorbing objects with uneven surfaces, the system mainly comprises the sponge vacuum sucker 1 and a vacuum pump, the vacuum pump 3 is a 550D microcomputer negative pressure oilless vacuum pump 3, the pump is started through microcomputer control, the pressure regulation between 0 mpa and-0.098 mpa is realized by using a high-precision photoelectric principle controller, the vibration during operation is small, the reliability is high, and the stable generation of vacuum can be ensured, through the atress calculation and layout analysis, 4 sponge vacuum chuck 1 that the diameter is 75mm have finally been selected and have been arranged in the tip of the 401 left and right sides of the cover body that sprays, sponge vacuum chuck 1 is fixed with stainless steel connecting piece 402 through the nut, stainless steel connecting piece 402 is fixed at the tip of the 401 left and right sides of the cover body that sprays through the welded mode, 41 afterbody of sponge vacuum chuck all has the pneumatic joint that the bore is 8mm, link to each other it in proper order through three way connection and 8mm trachea 2 and form the route, finally be connected to the vacuum pump kneck through total three way connection and 10mm trachea 2, when vacuum pump 3 starts, 4 sponge vacuum chuck 1 simultaneous workings, extract the air between sucking disc 1 and wall body, form the negative pressure condition, with spray set 4 firmly be fixed in the wall body that awaits measuring.

The invention is a nondestructive testing device for impermeability of a building wall considering wind-driven rain effect, which is provided with a suction cup 1, an air pipe 2, a vacuum pump 3, a spraying device 4, a booster water pump 5, a filtering device 6, a flowmeter 7, a pressure gauge 8, a water inlet pipe 9, a return pipe 10, a water tank 11, an air pressure device 12, a spraying cover body 401, a stainless steel connecting piece 402, an observation window 403, an air outlet 404, a first water inlet 405, a second water inlet 406, a return port 407, a first air inlet 408, a second air inlet 409, a sealing ring 410, a PU pipe 411 and a water spraying nozzle 412, when in use, firstly determining a measuring point, selecting a proper wall surface to draw a measuring point, simultaneously ensuring that the wall is flat and flat, the surface of the wall has no pollutants or attachments, starting a power supply, starting the vacuum pump 3, and starting the sponge vacuum suction cup 1 to work, wherein the spraying system is nondestructively fixed with the wall under the help of a fixing system, after the fixation, the booster water pump 5 is started, the water pump starts to work, the water pump is sent to the spraying system, the water spraying nozzle 412 starts to spray water, the required water pressure is adjusted according to a test plan, precipitation is simulated, the wind pressure device 12 is started, the air compressor starts to work, wind is input into the spraying cover body 401, the required wind pressure is adjusted according to the test plan, the wind-driven rain effect is simulated, the backflow water is collected and recovered to the middle backflow port 407 by utilizing the water conservancy gradient of 5 degrees at the bottom of the spraying cover body 401, finally, the backflow water flows back to the water tank 11 through a water pipe to complete circulation, the booster water pump 5 is closed after the test is finished, spraying is stopped at the moment, the air compressor and the air pressure trimmer are closed, direct blowing is stopped at the moment, finally, the vacuum pump 3 is closed, the sponge vacuum chuck 1 stops working, and the spraying cover body 401 is taken down after the external air pressure in the cavity of the sponge vacuum chuck 1 realizes the nondestructive fixation between the spraying system and the wall body, the invention comprehensively considers the combination of the 'wind-driven rain' effect and the circulating system, can simulate rainfall under various working condition combination conditions, leads the artificial simulation to be closer to the nature, realizes the cyclic utilization of water sources in the instrument by the circulating system, can obtain and test the water loss amount of each stage by measuring and reading the height of a water column while avoiding the waste of the water sources, and realizes the qualitative detection and the quantitative detection of crossing.

The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a consider building wall body impermeability nondestructive test equipment of wind-driven rain effect, includes fixed system, spraying system, hydraulic system, wind pressure system and return-flow system, its characterized in that: sucking disc (1) sets up the both sides surface at spray set (4), trachea (2) are located the middle part of sucking disc (1), vacuum pump (3) are located the one end surface of trachea (2), inlet tube (9) are located the one side surface of water tank (11), back flow (10) set up the opposite side surface at water tank (11), booster pump (5), filter equipment (6), flowmeter (7) and manometer (8) are located the middle part of inlet tube (9), filter equipment (6) are located one side of booster pump (5), flowmeter (7) are located one side of filter equipment (6), manometer (8) are located one side of flowmeter (7), spray set (4) are including the spray cover body (401), stainless steel connecting piece (402), observation window (403), air outlet (404), a water inlet (405), no. two water inlet (406), backward flow mouth (407), an air intake (408), no. two air intakes (409), sealing washer (410), PU pipe (411) and shower nozzle (412).

2. The nondestructive testing device for the impermeability of a building wall considering the wind-driven rain effect according to claim 1, wherein: the both sides surface of the cover body (401) of spraying is provided with stainless steel connecting piece (402), the front end surface of the cover body (401) of spraying is provided with observation window (403), the internal surface all around of the cover body (401) of spraying is provided with sealing washer (410), the quantity of stainless steel connecting piece (402) is four groups.

3. The nondestructive testing device for the impermeability of a building wall considering the wind-driven rain effect of claim 1, wherein: the upper end surface of the spraying cover body (401) is provided with an air outlet (404), a water inlet (405) and No. two water inlets (406), a water inlet (405) is located one side of air outlet (404), no. two water inlets (406) are located the opposite side of air outlet (404), the one side surface of the spraying cover body (401) is provided with an air inlet (408), the opposite side surface of the spraying cover body (401) is provided with No. two air inlets (409), the lower end surface of the spraying cover body (401) is provided with a return port (407), the rear end internal surface of the spraying cover body (401) is provided with a PU pipe (411), the middle part of the PU pipe (411) is provided with a water spraying nozzle (412).

4. The nondestructive testing device for the impermeability of a building wall considering the wind-driven rain effect according to claim 1, wherein: the outer surfaces of two sides of the spraying device (4) are fixedly connected with the outer surface of one side of the sucking disc (1), and the middle part of the sucking disc (1) is fixedly connected with the outer surface of one side of the vacuum pump (3) through the air pipe (2).

5. The nondestructive testing device for the impermeability of a building wall considering the wind-driven rain effect of claim 1, wherein: the outer surface of one side of the water tank (11) is detachably connected with the outer surface of the upper end of the spraying device (4) through a water inlet pipe (9), and the outer surface of the other side of the water tank (11) is detachably connected with the outer surface of the lower end of the spraying device (4) through a return pipe (10).

6. The nondestructive testing device for the impermeability of a building wall considering the wind-driven rain effect of claim 1, wherein: be provided with the air feed pipe between spray set (4) and wind pressure device (12), spray set (4) can be dismantled with wind pressure device (12) through the air feed pipe and be connected, inlet tube (9) can be dismantled with booster pump (5) and be connected, inlet tube (9) can be dismantled with filter equipment (6) and be connected, inlet tube (9) can be dismantled with flowmeter (7) and be connected, inlet tube (9) can be dismantled with manometer (8) and be connected.

7. The nondestructive testing device for the impermeability of a building wall considering the wind-driven rain effect of claim 1, wherein: the outer surface of the two sides of the spraying cover body (401) is fixedly connected with the outer surface of one side of the stainless steel connecting piece (402), the outer surface of the front end of the spraying cover body (401) is fixedly connected with the outer surface of the periphery of the observation window (403), and the inner surface of the periphery of the spraying cover body (401) is fixedly connected with the outer surface of the periphery of the sealing ring (410).

8. The nondestructive testing device for the impermeability of a building wall considering the wind-driven rain effect according to claim 1, wherein: spray the cover body (401) and air outlet (404) fixed connection, spray the cover body (401) and a water inlet (405) fixed connection, spray the cover body (401) and No. two water inlet (406) fixed connection, spray the cover body (401) and backward flow mouth (407) fixed connection, spray the cover body (401) and an air intake (408) fixed connection, spray the cover body (401) and No. two air intake (409) fixed connection, the rear end internal surface that sprays the cover body (401) and the outer wall fixed connection of PU pipe (411), the middle part of PU pipe (411) and the rear end surface that water drenches shower nozzle (412) can be dismantled and be connected.