CN112444558A - Electric spark leakage detection diagnosis method for detecting sealing performance of roof drying waterproof layer - Google Patents
Electric spark leakage detection diagnosis method for detecting sealing performance of roof drying waterproof layer Download PDFInfo
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- CN112444558A CN112444558A CN202010894105.1A CN202010894105A CN112444558A CN 112444558 A CN112444558 A CN 112444558A CN 202010894105 A CN202010894105 A CN 202010894105A CN 112444558 A CN112444558 A CN 112444558A
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- roof
- waterproof layer
- layer
- working electrode
- base layer
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000010892 electric spark Methods 0.000 title claims abstract description 12
- 238000003745 diagnosis Methods 0.000 title claims abstract description 9
- 238000007789 sealing Methods 0.000 title claims abstract description 8
- 238000001514 detection method Methods 0.000 title description 8
- 238000001035 drying Methods 0.000 title description 2
- 239000000463 material Substances 0.000 claims abstract description 16
- 230000007547 defect Effects 0.000 claims abstract description 15
- 230000015556 catabolic process Effects 0.000 claims abstract description 5
- 230000004907 flux Effects 0.000 claims abstract description 4
- 239000012774 insulation material Substances 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- 239000003989 dielectric material Substances 0.000 claims description 3
- 239000000615 nonconductor Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 39
- 239000000523 sample Substances 0.000 description 3
- 238000004078 waterproofing Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000002405 diagnostic procedure Methods 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000009418 renovation Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/92—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating breakdown voltage
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
Landscapes
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Civil Engineering (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Architecture (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a flux instrument diagnosis method for the sealing performance of a dry waterproof layer of a roof, which comprises the following steps: set up the electrically conductive basic unit of condition in the roofing inside, make the conducting layer be located below the roofing waterproof layer diagnosed, then use independent type spark detector to inspect the roofing surface comprehensively, if there is the penetrability defect in the waterproof layer, then owing to form high-voltage potential difference on the electrically conductive basic unit of condition and working electrode, and the waterproof layer is as electrical insulator, and the detector can detect the condition at defect department and produce the breakdown between electrically conductive basic unit of condition and the working electrode, then there is the electric spark appearance, its characterized in that: the method comprises the steps of using a plate material with the humidity of more than 7% and a cast-in-place material or a heat insulation material with the resistivity of less than 10^5 ohm/meter and a coiled material as a conditional conductive base layer, supplying a working electrode with the potential of 0.15-1.0 ampere and the rated voltage of 2-50 kilovolts, wherein the surface of the roof can be a horizontal type, a vertical type, an inclined type, a complex curve surface or a combination thereof.
Description
Technical Field
The invention belongs to the field of construction supervision and construction and installation engineering quality technical supervision, and can be used for diagnosing the sealing property of a waterproof layer of a roof with a complex structure, the roof does not need to be watered, and an insulating layer does not need to be soaked.
Background
Devices disclosed by Ceja C in Recommended test procedure for high-voltage membrane integration testing//28TH RCI International Convention and Trade Show, Chicago. The device can diagnose the sealing performance of the flat roof waterproof layer through high voltage. For diagnostic purposes, a probe sweep is performed from the side of the waterproof layer with a plate probe brush connected to a high pressure gun, while the conductive base layer on the other side of the waterproof layer is connected to a ground wire. The current will pass through the surface layer at the defect of the roof surface layer and enter the grounding base layer. This creates a short circuit, i.e. a breakdown. As a result, electric sparks are generated, thereby detecting the damaged portion of the waterproof layer.
Electronic Leak Detection High vs. Low Voltage// WATERPROOF! 2013. the method disclosed therein is well known. The method involves detecting a face layer leak using two different potentials during a roofing diagnostic process. The power supply used has two outgoing lines to maintain the opposite potential: one held at a negative potential "-" to power the brush electrodes and the other held at a positive potential "+" to power the substrate.
The ultra-precise instrumental diagnostic method for the sealing property of a roof waterproof layer by a high voltage method disclosed in Russian Federal application No. 2016148482 (published on 9/12/2016, International patent Classification No. G01M 3/16, E04D 13/16) is well known. The method is characterized in that when the conductive base layer forms an anisotropic high-voltage potential on the condition conductive base layer and the working electrode and the waterproof layer is used as an electric insulator, when the conductive base layer is damaged and the detection condition is met, a short circuit is generated between the conductive base layer and the working electrode. An electric spark detector is adopted as short-circuit detection equipment. The working electrode was supplied with a potential of 0.0015A of current and rated at 5-41 kV. Conductive cement particle boards, aluminum foil-clad insulation materials and glass fiber-based coiled materials can be used as the conditionally conductive base layer. If the roofing substrate is not conductive, it can be modified during the roofing construction or renovation phase to make it conductive.
However, the above known solutions are not accurate enough because when the working electrode is supplied with a potential of 0.0015 a of current and a nominal voltage of 5-41 kv, a large portion of the roofing defects are not detected by the electric spark tester during the diagnosis. Furthermore, in order to ensure that the defect detection site generates an electric spark, that is, a short circuit is realized in a circuit composed of the conditionally conductive base layer, the contact electrode, the detector, and the working electrode, it is necessary to use a material satisfying a series of conditions. For example, if the sheet moisture is less than 7%, or the resistivity of the coil is greater than 105 ohms/meter, the circuit will not short even if the roofing waterproofing layer is defective.
Disclosure of Invention
The technical result achieved by implementing the invention is that the successful detection probability of the defects in the roof waterproof layer diagnosis process is improved.
According to the invention, the flux instrument diagnosis method for the sealing performance of the dry waterproof layer of the roof comprises the following steps: set up the electrically conductive basic unit of condition in the roofing inside, make the conducting layer be located below the roofing waterproof layer diagnosed, then use independent type spark detector to inspect the roofing surface comprehensively, if there is the penetrability defect in the waterproof layer, then owing to form high-voltage potential difference on the electrically conductive basic unit of condition and working electrode, and the waterproof layer is as electrical insulator, and the detector can detect the condition at defect department and produce the breakdown between electrically conductive basic unit of condition and the working electrode, then there is the electric spark appearance, its characterized in that: the method comprises the steps of using a plate material with the humidity of more than 7% and a cast-in-place material or a heat insulation material with the resistivity of less than 10^5 ohm/meter and a coiled material as a conditional conductive base layer, supplying a working electrode with the potential of 0.15-1.0 ampere and the rated voltage of 2-50 kilovolts, wherein the surface of the roof can be a horizontal type, a vertical type, an inclined type, a complex curve surface or a combination thereof.
Detailed Description
For the purposes of the present invention, a "conditionally electrically conductive base layer" refers to a base layer made of any material that can be modified to serve as an electrically conductive layer.
For example, a conditioned conductive substrate may be provided on the interior of a roof during construction or renovation of the roof. It is preferred to use in roofing structures sheet and cast in place materials with moisture greater than 7% or insulation and coil materials with resistivity less than 105 ohms x m. For example, the board and cast in place material may be cement particle board with a moisture content of greater than 7%. For example, the insulation and the web may be fiberglass or fiberglass cloth-based composites. If other similar materials having a moisture value or resistivity outside of the above ranges are used, the principles of the present invention will not work: no electrical short circuit occurs at the defect detection location.
A roof with a complex structure, which may be a vertical, horizontal, inclined surface or various combinations thereof, has in fact both a flat roof section and also projections, roofing abutments, drainage funnels, parapet walls. And selecting a proper conditional conductive base layer scheme according to the roof structure. Contact electrodes are provided on the vertical surfaces of the roof panel butt joints or the protruding structures above the roof for subsequent connection to a self-contained spark detector, while ensuring stable electrical contact between the conditionally electrically conductive base layer and each contact electrode.
The ground cable of the detector is preferably connected to a contact electrode provided on the conditionally electrically conductive substrate. If the direct connection with the base layer cannot be realized, the detector can be grounded by adopting a capacitance method. The operator uses a working electrode, such as a high pressure gun, connected to a probe brush to inspect the roofing surface, preferably to supply the electrode with a potential of 0.15-1.0 amps at a nominal voltage of 2-50 kv. If the current and voltage values are outside the above ranges, a large portion of the waterproofing layer defects may be missed or the surface of the waterproofing layer may be damaged during diagnosis. Flux diagnostics are intended to examine each square centimeter of the full roofing surface.
If the waterproof layer has a penetrating defect, the waterproof layer is used as an electric insulator because a high-voltage potential difference is formed between the conditional conductive base layer and the working electrode, and the detector detects that electric breakdown generated between the conditional conductive base layer and the working electrode is accompanied by electric sparks at the defect position. When the defect is detected, the electric spark detector can send out sound or light alarm signals.
The invention can also be applied to civil and industrial engineering, and the diagnosis objects can be internal and external waterproof layers of embedded reinforced concrete structures (including shallow foundation and subway stations), fire-fighting water tanks, parking lots, industrial containers and the like.
Claims (3)
1. A flux instrument diagnosis method for the sealing performance of a dry waterproof roof layer comprises the following steps:
arranging a conditional conductive base layer in the roof, and enabling the conductive layer to be positioned below the diagnosed roof waterproof layer;
an electric spark detector is used for comprehensively detecting the surface of the roof, if the waterproof layer has a penetrability defect, the high-voltage potential difference is formed between the conditional conductive base layer and the working electrode, the waterproof layer is used as an electric insulator, the detector can generate breakdown between the conditional conductive base layer and the working electrode at the defect position and simultaneously generate electric sparks,
the method is characterized in that: the method comprises the steps of using a plate material with the humidity of more than 7% and a cast-in-place material or a heat insulation material and a coiled material with the resistivity of less than 105 ohm x m as a conditional conductive base layer, supplying 0.15-1.0A of current and 2-50 kV of rated voltage to a working electrode, wherein the surface of a roof can be a horizontal type surface, a vertical type surface, an inclined type surface, a complex curve surface or a combination of the horizontal type surface, the vertical type surface, the inclined type surface and the complex curve surface.
2. The method of claim 1, wherein the conditionally electrically conductive substrate is provided inside a roof during roofing construction or reconstruction.
3. The method of claim 1, wherein the spark tester is a self-contained spark tester.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2019127286 | 2019-08-29 | ||
| RU2019127286A RU2720344C1 (en) | 2019-08-29 | 2019-08-29 | Method for flow instrumental diagnostics of tightness of dry waterproofing layer of roof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112444558A true CN112444558A (en) | 2021-03-05 |
Family
ID=70553129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010894105.1A Pending CN112444558A (en) | 2019-08-29 | 2020-08-31 | Electric spark leakage detection diagnosis method for detecting sealing performance of roof drying waterproof layer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112444558A (en) |
| RU (1) | RU2720344C1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU201323U1 (en) * | 2020-09-29 | 2020-12-09 | Общество с ограниченной ответственностью «К-СИСТЕМС ГРУПП» | Waterproofed roof |
| RU203619U1 (en) * | 2021-02-15 | 2021-04-14 | Руслан Мирхадович Шарипов | Conductive roll insulation material |
| RU206894U1 (en) * | 2021-04-16 | 2021-09-30 | Общество с ограниченной ответственностью «К-СИСТЕМС ГРУПП» | Electrically conductive roll material with carbon nanotubes |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10250128A (en) * | 1997-03-07 | 1998-09-22 | Alps Electric Co Ltd | Thermal head and its manufacture |
| CN102099531A (en) * | 2008-07-19 | 2011-06-15 | 普罗吉欧监控技术有限公司 | Method and device for checking the seal of structural seals |
| CN103250051A (en) * | 2010-12-29 | 2013-08-14 | 利乐拉瓦尔集团及财务有限公司 | A method and a device for detecting defects in a packaging material |
| CN103323750A (en) * | 2013-05-30 | 2013-09-25 | 孟津县电业公司 | Detection method and device for abnormal sounds of high-voltage sealing switch cabinet or sealing bus |
| RU2016148482A (en) * | 2016-12-09 | 2018-06-13 | Общество с ограниченной ответственностью "Электроинжиниринг" | A method of ultra-precise instrumental diagnostics of the tightness of waterproofing a flat roof and a method of adapting a roof for its implementation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4450663A (en) * | 1981-06-15 | 1984-05-29 | Watkins Norman C | Insulative roof structure |
-
2019
- 2019-08-29 RU RU2019127286A patent/RU2720344C1/en active
-
2020
- 2020-08-31 CN CN202010894105.1A patent/CN112444558A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10250128A (en) * | 1997-03-07 | 1998-09-22 | Alps Electric Co Ltd | Thermal head and its manufacture |
| CN102099531A (en) * | 2008-07-19 | 2011-06-15 | 普罗吉欧监控技术有限公司 | Method and device for checking the seal of structural seals |
| CN103250051A (en) * | 2010-12-29 | 2013-08-14 | 利乐拉瓦尔集团及财务有限公司 | A method and a device for detecting defects in a packaging material |
| CN103323750A (en) * | 2013-05-30 | 2013-09-25 | 孟津县电业公司 | Detection method and device for abnormal sounds of high-voltage sealing switch cabinet or sealing bus |
| RU2016148482A (en) * | 2016-12-09 | 2018-06-13 | Общество с ограниченной ответственностью "Электроинжиниринг" | A method of ultra-precise instrumental diagnostics of the tightness of waterproofing a flat roof and a method of adapting a roof for its implementation |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2720344C1 (en) | 2020-04-29 |
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