CN112595649B - Concrete impermeability detection method and device - Google Patents
Concrete impermeability detection method and device Download PDFInfo
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- CN112595649B CN112595649B CN202011528446.3A CN202011528446A CN112595649B CN 112595649 B CN112595649 B CN 112595649B CN 202011528446 A CN202011528446 A CN 202011528446A CN 112595649 B CN112595649 B CN 112595649B
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- 238000001514 detection method Methods 0.000 title claims abstract description 93
- 238000012360 testing method Methods 0.000 claims abstract description 113
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 239000011159 matrix material Substances 0.000 claims description 29
- 239000003990 capacitor Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000000452 restraining effect Effects 0.000 claims description 9
- 230000006698 induction Effects 0.000 claims description 7
- 230000035699 permeability Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 239000012780 transparent material Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 230000003487 anti-permeability effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000009736 wetting Methods 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 17
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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- 230000035515 penetration Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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Abstract
The invention discloses a method and a device for detecting concrete impermeability, the device is used for auxiliary fixation of a concrete impermeability test block and comprises the following steps: the test die holder is of a cylindrical structure with an open upper end, a first extending part which extends outwards and horizontally is arranged on the outer edge of the upper end face of the test die holder, and a detection medium input joint communicated into the cylindrical structure is arranged at the bottom of the test die holder; the test mold sleeve is of a cylindrical structure, and a containing cavity with a frustum-shaped outline is formed in the test mold sleeve and used for containing the concrete impermeability test block; the plurality of constraint mechanisms are used for relatively fixing the test die holder and the test die sleeve; the device is convenient to assemble and disassemble, the detection operation efficiency can be improved, and the connecting sleeve and the flexible sensor film which extend on the device are combined with a corresponding detection method, so that the use flexibility and the detection fineness of the detection device can be improved.
Description
Technical Field
The invention relates to the technical field of concrete detection, in particular to a method and a device for detecting concrete impermeability.
Background
Impermeability as an important index for evaluating durability of concrete, test methods such as a water permeation method, a gas permeation method, and an ion permeation method have been produced so far.
When the current concrete anti-permeability test block is assembled, a test die sleeve is usually tightly installed on a test die base through a plurality of groups of bolts, the process of locking the bolts usually needs to occupy more time, and the bolts are easily worn and disassembled when being locked and disassembled for a long time, so that the problems of the installation precision and the incapability of disassembling due to the slippage of the bolts in danger are influenced.
In addition, the water permeability method test and the gas permeability method are the current common application schemes, however, the current detection equipment is mostly in the form that one set of equipment corresponds to one set of detection scheme, and the detection equipment has certain use limitation, and because certain sharing property is provided on the fixing device of the test mold, if the test mold fixing part of the detection equipment can be modified, the detection equipment is suitable for a plurality of detection methods, the use flexibility and the detection convenience of the detection equipment are greatly improved, and meanwhile, the concrete impermeability detection equipment can bring greater convenience and realize positive practical significance.
Disclosure of Invention
In view of the above, the present invention aims to provide a method and an apparatus for detecting concrete impermeability, which are convenient for test block installation and are flexible and reliable to implement.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a concrete impermeability detection device for the supplementary fixed of concrete impermeability test piece, it includes:
the device comprises a test die holder, a test die, a first clamping device and a second clamping device, wherein the test die holder is of a cylindrical structure with an open upper end, a first extending part which extends outwards and horizontally is arranged at the outer edge of the upper end surface of the test die holder, more than two pairs of U-shaped connecting lugs which are opposite in pairs are arranged at the edge of the first extending part in an annular array, a detection medium input joint communicated into the cylindrical structure is arranged at the bottom of the test die holder, and a valve is arranged on the detection medium input joint;
the test die sleeve is of a cylindrical structure, a containing cavity with a frustum-shaped outline is formed in the test die sleeve, the containing cavity is used for containing a concrete anti-permeability test block, a second extending part which extends outwards and horizontally is arranged at the outer edge of the lower end face of the test die sleeve, and constraint grooves which correspond to the U-shaped connecting lugs on the first extending part one by one are formed in the edge of the second extending part;
a plurality of restraint mechanisms, with the U-shaped engaging lug one-to-one on the first extension and be connected, restraint mechanism include: the two sides of the U-shaped connecting lug are provided with first mounting through holes, one end of the connecting rod is provided with a second mounting through hole corresponding to the first mounting through hole, the rod part of the bolt penetrates through the first mounting through hole and the second mounting through hole respectively and is in threaded connection with the nut, the connecting rod is rotatably connected onto the U-shaped connecting lug, the other end of the connecting rod can be turned into a restraining groove of a second extending part of the test mold sleeve relative to the U-shaped connecting lug, when the connecting rod is turned into the restraining groove, the other end of the connecting rod is higher than the upper end surface of the second extending part, one end of the pressing rod is provided with an arc part, and the arc part is eccentrically connected to the other end of the connecting rod through the rotating pin, when the connecting rod is turned to the restraining groove and the rigid gasket is attached to the upper end face of the second extending portion, the other end of the pressure rod is stirred to drive the arc portion to rotate around the rotating pin and push the flexible gasket to drive the rigid gasket to be attached to the second extending portion, the second extending portion of the test die sleeve is tightly pressed and fixed to the upper end face of the test die base, and at the moment, a resultant force stress point and a stress direction passing through the resultant force stress point are formed at the contact point of the arc portion and the flexible gasket, and the stress direction points to the center of the rotating pin;
the first sealing washer is of an annular structure and is arranged between the lower end faces of the first extension part and the second extension part.
In a possible embodiment, the flexible gasket and the rigid gasket are provided with a U-shaped groove on one side, the rigid gasket is more than one, and the thickness of the flexible gasket is 2 to 4mm.
As a possible implementation, further, the present solution further includes:
the connecting sleeve is of a cylindrical structure with an open lower end, an internal thread structure is arranged on the inner peripheral side of the connecting sleeve, and an air pressure detection joint communicated into the cylindrical structure is arranged at the top of the connecting sleeve;
the outer periphery side of the upper end of the test die sleeve is provided with an external thread structure matched with the internal thread structure of the connecting sleeve and is in threaded connection with the test die sleeve, and a second sealing washer with an annular structure is arranged between the upper end face of the test die sleeve and the connecting sleeve.
As a preferred alternative, it is preferred that the connecting sleeve comprises:
the connecting sleeve main body is of a cylindrical structure with two open ends, a necking part is arranged at the upper end of the connecting sleeve main body, the inner diameter of the necking part is equal to that of the upper end face of the test die sleeve, and the internal thread structure is arranged in the connecting sleeve main body;
the connecting sleeve cover plate is of a circular plate structure formed by transparent materials, is fixedly attached to the upper end face of the connecting sleeve main body, seals the upper end face of the connecting sleeve main body, and the air pressure detection joint is arranged on the connecting sleeve cover plate.
As a preferred optional implementation form, preferably, the air pressure detecting joint is provided with a barb structure, and the inner diameter of the air pressure detecting joint is 3-15 mm.
Based on the device scheme, the invention also provides application of the flexible sensor in a concrete impermeability detection device, which comprises the concrete impermeability detection device and further comprises:
the flexible sensor film is of a frustum-shaped cylindrical sheet structure which is matched with the outline of the inner wall of the test die sleeve, and a capacitance sensing dot matrix is distributed in the flexible sensor film and is used for sensing the surface wetting condition of the flexible sensor film and generating a feedback signal;
the flexible sleeve is of a frustum-shaped cylindrical thin sheet structure which is adaptive to the outline of the inner wall of the flexible sensor film, the inner surface of the flexible sleeve is sleeved on the outer wall of the concrete impermeability test block, the outer surface of the flexible sleeve is attached to the inner surface of the flexible sensor film, a plurality of water seepage through holes are uniformly distributed on the flexible sleeve, and the thickness of the flexible sleeve is 1-2 mm;
the flexible sensor film comprises a flexible sensor film, a driving sensing unit, a capacitor sensing dot matrix and a plurality of lead wires, wherein the capacitor sensing dot matrix on the flexible sensor film is formed by crossing a plurality of criss-cross metal wires, the corners of the capacitor sensing dot matrix extend out of lead-out wires, the lead-out wires are respectively connected with the driving sensing unit, and the driving sensing unit drives the capacitor sensing dot matrix to form current and receives signals fed back by the capacitor sensing dot matrix to generate a detection result.
As a possible implementation manner, further, the flexible sleeve is a silicone sleeve.
The method for the impermeability detection of concrete according to the above application, comprising the following steps:
assembling a concrete impermeability test block;
injecting water into a detection medium input joint of the test die holder at a preset pressure and maintaining the pressure;
constructing a coordinate set corresponding to the position of a capacitance sensing dot matrix of the flexible sensor film;
driving a capacitance induction dot matrix of the flexible sensor film and obtaining an initial electric signal;
acquiring feedback signals generated by each point of a capacitance induction dot matrix in real time;
and outputting a detection result when the feedback signal meets the preset condition.
As a possible implementation manner, further, the detection result includes one or more of a coordinate signal of a point corresponding to the capacitive sensing dot matrix and an input pressure of the detection medium.
In the aspect of gas impermeability detection, the invention correspondingly provides a concrete impermeability detection method, which comprises the concrete impermeability detection device, and the method comprises the following steps:
assembling a concrete impermeability test block;
inputting a gas medium into a detection medium input joint of the test die holder by preset pressure;
acquiring a pressure value of the air pressure detection joint;
and outputting the gas permeability detection data of the concrete impermeability test block.
By adopting the technical scheme, compared with the prior art, the invention has the beneficial effects that: this scheme ingenious nature is through setting up the extension that corresponds on examination die holder and examination die sleeve, utilize restraint mechanism to retrain fixed examination die holder and examination die sleeve fast, the efficiency of the appearance of going up of examination die sleeve has been improved greatly, manpower and time have been saved, still further connect the adapter sleeve on examination die sleeve, through setting the adapter sleeve apron of adapter sleeve to transparent material shaping, make the device both can carry out the impervious test of liquid, can carry out gaseous impervious test again, the activation of device use has been realized, the use application scope of device has been improved, in addition, still further introduced flexible sensor film and realized further refining treatment to the impervious detection of liquid, reliability and the accurate nature of device use have been improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an embodiment 1 of the present invention;
FIG. 2 is a schematic side view of a die case according to embodiment 1 of the present invention;
FIG. 3 is a schematic top view of a test mold case according to embodiment 1 of the present invention;
FIG. 4 is a schematic configuration diagram showing one of the schematic states of implementation of a restraining mechanism according to embodiment 1 of the invention;
FIG. 5 is a schematic structural view showing a second mode of carrying out a restraining mechanism according to embodiment 1 of the present invention;
FIG. 6 is a schematic side view showing a second embodiment of a restraint mechanism according to embodiment 1 of the present invention;
FIG. 7 is a schematic structural view of a flexible gasket or a rigid gasket according to embodiment 1 of the present invention;
fig. 8 is a schematic top view of a test bed in embodiment 1 of the present invention;
FIG. 9 is a schematic diagram of an installation structure of a gas permeability detection device according to the embodiment 1 of the present invention, wherein the gas input source and the gas pressure detection connector are connected to each other;
FIG. 10 is a schematic diagram showing a schematic construction of a liquid permeability test using the embodiment 2 of the present invention;
FIG. 11 is an enlarged view of a portion of the structure at A in FIG. 10;
fig. 12 is a schematic view showing the connection of the flexible sensor film and the driving sensing unit according to embodiment 2 of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and examples. It is to be noted that the following examples are only illustrative of the present invention, and do not limit the scope of the present invention. Similarly, the following examples are only some but not all examples of the present invention, and all other examples obtained by those skilled in the art without any inventive work are within the scope of the present invention.
Example 1
As shown in one of fig. 1 to 9, the present invention provides a concrete impermeability test device for auxiliary fixing of a concrete impermeability test block 8, which comprises:
the test die holder 1 is of a cylindrical structure with an open upper end, a first extending part 11 extending outwards and horizontally is arranged on the outer edge of the upper end face of the test die holder, more than two pairs of U-shaped connecting lugs 12 opposite to each other in pairs are arranged on the edge of the first extending part 11 in an annular array, a detection medium input joint 13 communicated into the cylindrical structure of the test die holder 1 is arranged at the bottom of the test die holder 1, and a valve 131 can be connected to the detection medium input joint 13 to control the input or the partition of detection media;
the test die sleeve 2 is of a cylindrical structure, a containing cavity 21 with a frustum-shaped outline is formed in the test die sleeve 2, the containing cavity 21 is used for containing the concrete impermeability test block 8, a second extending part 22 which extends outwards and horizontally is arranged at the outer edge of the lower end face of the test die sleeve 2, and constraint grooves 23 which correspond to the U-shaped connecting lugs 12 on the first extending part one by one are formed in the edge of the second extending part 22;
a plurality of constraint mechanisms 3, which are in one-to-one correspondence and connected with the U-shaped connecting lugs 12 on the first extension part 11, wherein the constraint mechanisms 3 comprise: the two sides of the U-shaped connecting lug 12 are provided with first mounting through holes 121, one end of the connecting rod 32 is provided with second mounting through holes 321 corresponding to the first mounting through holes 121, the rod part of the bolt 35 penetrates through the first mounting through holes 121 and the second mounting through holes 321 respectively and is in threaded connection with the nut 36, the connecting rod 32 is rotatably connected to the U-shaped connecting lug 12, the other end of the connecting rod 32 can be turned into the restraint groove 23 of the second extension part 22 of the test mold sleeve 2 relative to the U-shaped connecting lug 12, when the connecting rod 32 is turned into the restraint groove 23, the other end of the connecting rod 32 is higher than the upper end surface of the second extension part 22, one end of the pressing rod 31 is provided with an arc part 311, the arc part 311 is eccentrically connected to the other end of the connecting rod 32 through the rotating pin 37, the flexible gasket 33 and the rigid gasket 34 are both slidably sleeved on the connecting rod 32, and the flexible gasket 33 is located between the rigid gasket 34 and the arc-shaped part 311 of the pressure lever 31, one end surface of the rigid gasket 34 is used for being attached to the upper end surface of the second extending part 22, when the connecting rod 32 is turned over to the restraining groove 23 and the rigid gasket 34 is attached to the upper end surface of the second extending part 22, the other end of the pressure lever 31 is toggled to drive the arc-shaped part 311 to rotate around the rotating pin 37 and push the flexible gasket 33 to drive the rigid gasket 34 to be attached to the second extending part 22, so as to tightly press and fix the second extending part 22 of the test die sleeve 2 to the upper end surface of the test die base 1, at this time, a resultant force stress point and a stress direction passing through the resultant force stress point are formed at the contact point of the arc-shaped part 311 and the flexible gasket 33, the stress direction points to the center of the rotating pin 37, in addition, the friction force between the flexible gasket 33 and the arc-shaped part 311 can further restrain the pressure lever 31, so that the steel is restrained and fixed;
the first sealing washer 4, which is an annular structure, is disposed between the lower end surfaces of the first extension 11 and the second extension 22.
As a possible implementation manner, further, one side of each of the flexible gasket 33 and the rigid gasket 34 is provided with the U-shaped grooves 331 and 341, and the rigid gasket 34 is more than one, that is, the thickness can be increased by increasing the number of the rigid gaskets, the thickness of the flexible gasket 33 is 2 to 4mm, when the thickness is greater than 4mm, a certain compressible space still exists when the arc portion 311 of the pressing rod 31 rotates to press against the flexible gasket 33, so that the test mold sleeve 2 still has a shaking space, and when the thickness is less than 2mm, the test mold sleeve may be easily scratched by the arc portion of the pressing rod 31 because of being too thin.
In this embodiment, as a possible implementation manner, further, this embodiment further includes:
the connecting sleeve 5 is a cylindrical structure with an open lower end, an internal thread structure 511 is arranged on the inner peripheral side of the connecting sleeve, and the top of the connecting sleeve is provided with an air pressure detection joint 6 communicated into the cylindrical structure;
the periphery side of the upper end of the test die sleeve 2 is provided with an external thread 24 structure matched with the internal thread structure of the connecting sleeve 5 and is in threaded connection with the test die sleeve 2, and a second sealing gasket 7 of an annular structure is arranged between the upper end face of the test die sleeve 2 and the connecting sleeve 5.
In addition, in order to make the device of this embodiment be applicable to both the liquid impervious structure and the gas impervious detection, as a preferred embodiment, preferably, the connecting sleeve 5 includes:
the connecting sleeve main body 51 is a cylindrical structure with two open ends, the upper end of the connecting sleeve main body is provided with a necking part, the inner diameter of the necking part is equal to that of the upper end face of the test die sleeve 2, and the internal thread structure 511 is arranged in the connecting sleeve main body 51;
the connecting sleeve cover plate 52 is a circular plate structure formed by transparent materials and is fixedly attached to the upper end face of the connecting sleeve main body 51 to seal the upper end face of the connecting sleeve main body 51, and the air pressure detection joint 6 is arranged on the connecting sleeve cover plate 62.
By the scheme, when liquid impermeability is detected, the connecting sleeve 5 does not need to be detached, the air pressure detection joint 6 only needs to be emptied, the connecting part of the detection medium input joint 13 is directly connected to the liquid input equipment, and the detection result of liquid impermeability can be observed through the connecting sleeve cover plate 52 made of transparent materials;
in the aspect of gas impermeability detection, because the caliber of the upper end of the die sleeve 2 is large, if the specification of the air pressure detection joint 6 is consistent with that of the air pressure detection joint, the sensitivity of the air pressure detection is greatly reduced, therefore, in order to improve the connection reliability and improve the sensitivity of the air pressure detection, as a preferred implementation form, preferably, the air pressure detection joint 6 is provided with the barb structure 61, and the inner diameter of the air pressure detection joint 6 is 3-15 mm, wherein the inner diameter of the air pressure detection joint 6 directly determines the range of the internal air pressure induction change, that is, when the die sleeve 2 passes through a specific amount of air, if the inner diameter of the air pressure detection joint 6 is too large, the change range of the cross section is relatively small, so that the inner diameter of the air pressure detection joint 6 is reduced, and the sensitivity of the air pressure change can be improved.
Based on the structural scheme of the embodiment, the embodiment correspondingly provides a concrete impermeability detection method for gas impermeability detection, and the operation method of the concrete impermeability detection method roughly comprises the following steps:
s01, assembling a concrete impermeability test block 8;
s02, inputting a gas medium into a detection medium input joint 13 of the test die holder 1 at a preset pressure;
s03, acquiring a pressure value of the air pressure detection joint 6;
and S04, outputting gas permeability detection data of the concrete impermeability test block 8.
The liquid impermeability operation is different from the above operation, and the difference is only that the medium for detecting the gas transmission of the medium input joint is liquid and the air pressure detection joint is directly placed without being connected with an air pressure detection device, in addition, only the water seepage condition of the upper end surface of the concrete impermeability test block 8 needs to be observed, so the operation method of the liquid detection is not repeated any more.
Example 2
As shown in one of fig. 10 to 12, as a further optimization of embodiment 1 in a liquid impermeability test, this embodiment is different from embodiment 1 in that it provides an application of a flexible sensor in a concrete impermeability test device, which is different from embodiment 1 in that it further includes:
the flexible sensor film 9 is of a frustum-shaped cylindrical sheet structure which is matched with the inner wall profile of the test die sleeve 2, a capacitance sensing dot matrix 902 is distributed in the flexible sensor film, and the capacitance sensing dot matrix 902 is used for sensing the surface wetting condition of the flexible sensor film and generating a feedback signal;
the flexible sleeve 91 is of a frustum-shaped cylindrical thin sheet structure which is adaptive to the outline of the inner wall of the flexible sensor film 9, the inner surface of the flexible sleeve 91 is sleeved on the outer wall of the concrete impermeability test block 8, the outer surface of the flexible sleeve is used for being attached to the inner surface of the flexible sensor film 9, a plurality of water seepage through holes are uniformly distributed on the flexible sleeve 91, the thickness of the flexible sleeve 91 is 1-2 mm, the flexible sleeve 91 mainly has the function of spacing the flexible sensor film 9 and the concrete impermeability test block 8, and simultaneously, the damage indentation caused by the unevenness of the surface of the concrete impermeability test block 8 is overcome, and the flexible sleeve 91 is provided with the water seepage through holes and can guide out exuded liquid to avoid the interference of the induction result;
the driving sensing unit 92, the capacitance sensing dot matrix 902 on the flexible sensor film 9 is formed by intersecting a plurality of criss-cross metal wires, and lead wires extend out of corners of the capacitance sensing dot matrix 902, the lead wires are respectively connected 92 with the driving sensing unit, the driving sensing unit 92 drives the capacitance sensing dot matrix 902 to form current and receive signals fed back by the capacitance sensing dot matrix and generate a detection result, the driving sensing unit 92 includes a driving unit 922 and a sensing unit 921, and corresponding sensing and driving signals can be controlled and output and received from a control module 93.
The other parts corresponding to the non-mentioned reference numerals in this embodiment are the same as the reference numerals corresponding to embodiment 1, and are not described again.
The main core of this embodiment lies in that the most popular capacitive screen sensing technology is used for liquid impermeability detection of concrete, such as CN 106873817A-touch screen panel, CN 101501618A-touch screen liquid crystal display, etc., especially the application of the current flexible screen is very aggressive, but the sensing detection technology only has application in display control at present, and other fields are still blank, and this embodiment is just skillfully used for concrete impermeability detection, and provides a detection technical solution for more accurately and reliably analyzing the performance of the impermeability of the concrete technology in a more sophisticated application scenario, while in the principle of capacitance sensing, it should be understood by those skilled in the art that the capacitive sensing module of the current mobile phone screen is a flexible sensor film integrated on the glass panel of the screen, the flexible sensor film itself is a cone-shaped cylindrical sheet structure adapted to the inner wall profile of the mobile phone screen, which is used for concrete liquid impermeability detection, the flexible sensor film itself is a flexible base layer 901 for applying capacitance sensing 902 to generate a sensing area, while this embodiment mainly lies in that a cone-shaped cylindrical sheet structure adapted to the inner wall profile of the mobile phone screen 2 is used for concrete liquid impermeability detection, and how to obtain capacitance sensing signals, and how to perform a thin ITO working surface positioning of a thin layer is a thin layer, and how to ensure that the ITO thin layer is a thin layer for a thin layer. When a foreign medium touches the metal layer, the medium and the surface of the capacitive sensing array 902 form a coupling capacitance due to the change in the electric field, which is a direct conductor for high frequency currents, so that the medium draws a small current away from the contact point. The currents respectively flow out of the electrodes on the four corners of the touch screen, the currents flowing through the four electrodes are in direct proportion to the distances from the medium to the four corners, and the controller accurately calculates the proportions of the four currents to obtain the position of a touch point.
Wherein, as a possible implementation mode, further, the flexible sleeve is a silica gel sleeve.
In addition, based on the structural scheme of the embodiment, the embodiment correspondingly provides a concrete impermeability detection method in liquid impermeability detection, and the operation method thereof generally comprises the following steps:
s01, assembling a concrete impermeability test block;
s02, injecting water into a detection medium input joint of the test die holder at a preset pressure and maintaining the pressure;
s03, constructing a coordinate set corresponding to the position of a capacitance sensing dot matrix of the flexible sensor film;
s04, driving a capacitance induction dot matrix of the flexible sensor film and obtaining an initial electric signal;
s05, acquiring feedback signals generated by each point of the capacitance sensing dot matrix in real time;
and S06, outputting a detection result when the feedback signal meets a preset condition.
As a possible implementation manner, further, the detection result includes one or more of a coordinate signal of a point corresponding to the capacitive sensing dot matrix and an input pressure of the detection medium.
Since liquid impermeability test is a conventional technical solution, the main object of this embodiment is to provide a method that can further determine whether the lateral surface of the concrete impermeability test block 8 has leakage and determine the depth of the leakage under the condition that no penetration leakage exists, so as to further and precisely and deeply understand the leakage condition of the concrete impermeability test block 8, and in addition, other technologies such as a calculation formula can be directly applied to the existing formula, so the detailed process of how to calculate the test result is not repeated.
The above description is only a part of the embodiments of the present invention, and not intended to limit the scope of the present invention, and all equivalent devices or equivalent processes performed by the contents of the present specification and the attached drawings, or directly or indirectly applied to other related technical fields, are all included in the scope of the present invention.
Claims (9)
1. The utility model provides a concrete impermeability detection device for the supplementary fixed of concrete impermeability test piece, its characterized in that, it includes:
the device comprises a test die holder, a test die, a first clamping device and a second clamping device, wherein the test die holder is of a cylindrical structure with an open upper end, a first extending part which extends outwards and horizontally is arranged at the outer edge of the upper end surface of the test die holder, more than two pairs of U-shaped connecting lugs which are opposite in pairs are arranged at the edge of the first extending part in an annular array, a detection medium input joint communicated into the cylindrical structure is arranged at the bottom of the test die holder, and a valve is arranged on the detection medium input joint;
the test die sleeve is of a cylindrical structure, a containing cavity with a frustum-shaped outline is formed in the test die sleeve, the containing cavity is used for containing a concrete anti-permeability test block, a second extending part which extends outwards and horizontally is arranged at the outer edge of the lower end face of the test die sleeve, and constraint grooves which correspond to the U-shaped connecting lugs on the first extending part one by one are formed in the edge of the second extending part;
a plurality of restraint mechanisms, with the U-shaped engaging lug one-to-one on the first extension and be connected, restraint mechanism include: the two sides of the U-shaped connecting lug are provided with first mounting through holes, one end of the connecting rod is provided with a second mounting through hole corresponding to the first mounting through hole, the rod part of the bolt passes through the first mounting through hole and the second mounting through hole respectively and is in threaded connection with the nut, the connecting rod is rotatably connected to the U-shaped connecting lug, the other end of the connecting rod can be turned into a restraining groove of a second extending part of the test die sleeve relative to the U-shaped connecting lug, when the connecting rod is turned into the restraining groove, the other end of the connecting rod is higher than the upper end surface of the second extending part, one end of the pressing rod is provided with an arc part which is eccentrically connected to the other end of the connecting rod through the rotating pin, when the connecting rod is turned to the restraining groove and the rigid gasket is attached to the upper end face of the second extending portion, the other end of the pressure rod is stirred to drive the arc portion to rotate around the rotating pin and push the flexible gasket to drive the rigid gasket to be attached to the second extending portion, the second extending portion of the test die sleeve is tightly pressed and fixed to the upper end face of the test die base, and at the moment, a resultant force stress point and a stress direction passing through the resultant force stress point are formed at the contact point of the arc portion and the flexible gasket, and the stress direction points to the center of the rotating pin;
the first sealing washer is of an annular structure and is arranged between the lower end faces of the first extension part and the second extension part;
the flexible sensor film is of a frustum-shaped cylindrical sheet structure which is matched with the outline of the inner wall of the test die sleeve, and a capacitance sensing dot matrix is distributed in the flexible sensor film and is used for sensing the surface wetting condition of the flexible sensor film and generating a feedback signal;
the flexible sleeve is of a frustum-shaped cylindrical thin sheet structure which is adaptive to the outline of the inner wall of the flexible sensor film, the inner surface of the flexible sleeve is sleeved on the outer wall of the concrete impermeability test block, the outer surface of the flexible sleeve is attached to the inner surface of the flexible sensor film, a plurality of water seepage through holes are uniformly distributed on the flexible sleeve, and the thickness of the flexible sleeve is 1-2 mm;
the flexible sensor film comprises a flexible sensor film, a driving sensing unit, a capacitor sensing dot matrix and a plurality of lead wires, wherein the capacitor sensing dot matrix on the flexible sensor film is formed by crossing a plurality of criss-cross metal wires, the corners of the capacitor sensing dot matrix extend out of lead-out wires, the lead-out wires are respectively connected with the driving sensing unit, and the driving sensing unit drives the capacitor sensing dot matrix to form current and receives signals fed back by the capacitor sensing dot matrix to generate a detection result.
2. The concrete impermeability test device of claim 1, wherein one side of each of the flexible gasket and the rigid gasket is provided with a U-shaped groove, and the rigid gasket is more than one, and the thickness of the flexible gasket is 2-4 mm.
3. The concrete impermeability test apparatus of claim 1, further comprising:
the connecting sleeve is of a cylindrical structure with an open lower end, an internal thread structure is arranged on the inner peripheral side of the connecting sleeve, and an air pressure detection joint communicated into the cylindrical structure is arranged at the top of the connecting sleeve;
the outer periphery side of the upper end of the test die sleeve is provided with an external thread structure matched with the internal thread structure of the connecting sleeve and in threaded connection with the test die sleeve, and a second sealing washer with an annular structure is arranged between the upper end face of the test die sleeve and the connecting sleeve.
4. The concrete impermeability test device of claim 3, wherein the connecting sleeve comprises:
the connecting sleeve main body is of a cylindrical structure with two open ends, a necking part is arranged at the upper end of the connecting sleeve main body, the inner diameter of the necking part is equal to that of the upper end face of the test mold sleeve, and the internal thread structure is arranged in the connecting sleeve main body;
the connecting sleeve cover plate is of a circular plate structure formed by transparent materials, is fixedly attached to the upper end face of the connecting sleeve main body, seals the upper end face of the connecting sleeve main body, and the air pressure detection joint is arranged on the connecting sleeve cover plate.
5. The apparatus according to claim 3 or 4, wherein the air pressure test joint is provided with a barb structure, and the inner diameter of the air pressure test joint is 3-15 mm.
6. The concrete impermeability test device of claim 1, wherein the flexible sheath is a silicone sheath.
7. A method for testing concrete impermeability, comprising the concrete impermeability test apparatus of any one of claims 1 to 6, wherein the method comprises the steps of:
assembling a concrete impermeability test block;
injecting water into a detection medium input joint of the test die holder at a preset pressure and maintaining the pressure;
constructing a coordinate set corresponding to the position of a capacitance sensing dot matrix of the flexible sensor film;
driving a capacitance induction dot matrix of the flexible sensor film and obtaining an initial electric signal;
acquiring feedback signals generated by each point of a capacitance induction dot matrix in real time;
and outputting a detection result when the feedback signal meets the preset condition.
8. The method of claim 7, wherein the detection result comprises at least one of a coordinate signal of a point corresponding to the capacitive sensing lattice and an input pressure of a detection medium.
9. A concrete impermeability test method, characterized in that it comprises the concrete impermeability test apparatus of any one of claims 3 to 5, and the method comprises the following steps:
assembling a concrete impermeability test block;
inputting a gas medium into a detection medium input joint of the test die holder by preset pressure;
acquiring a pressure value of the air pressure detection joint;
and outputting the gas permeability detection data of the concrete impermeability test block.
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| CN113848167B (en) * | 2021-12-01 | 2022-02-25 | 南京东仪新智能科技有限公司 | Impervious test unit and full-automatic impervious appearance that does not have lift and locking device |
| CN113970514B (en) * | 2021-12-24 | 2022-03-11 | 南京东仪新智能科技有限公司 | Impervious test unit |
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