CN203376229U - Negative-pressure test device for surface air permeability - Google Patents
Negative-pressure test device for surface air permeability Download PDFInfo
- Publication number
- CN203376229U CN203376229U CN201320448176.4U CN201320448176U CN203376229U CN 203376229 U CN203376229 U CN 203376229U CN 201320448176 U CN201320448176 U CN 201320448176U CN 203376229 U CN203376229 U CN 203376229U
- Authority
- CN
- China
- Prior art keywords
- negative
- sucker
- ventilative
- negative pressure
- proving installation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model belongs to a test device for surface air permeability of bituminous concrete or cement concrete in engineering of water resources and hydropower and the like and particularly relates to a negative-pressure test device for surface permeability. A vertical pipe is connected to a through hole formed in the top surface of a box-shaped air chamber of which the bottom surface is open; a negative-pressure pipe is connected with the through hole in the pipe wall of the vertical pipe; the negative-pressure pipe is connected with a vacuum pump; a vacuum meter is arranged at the upper end of the vertical pipe; a sucking disc is arranged underneath the air chamber; an air ventilating hole is formed at the center of the sucking disc; a sealing ring matched with a circular-ring outer surface of the bottom of the sucking disc is arranged underneath the sucking disc. The negative-pressure test device disclosed by the utility model can be used for realizing an anti-permeability test for a built bituminous concrete or cement concrete building, and is convenient to carry and operate, safe and environment-friendly.
Description
Technical field
The utility model belongs to the proving installation of the Surface Permeability of the engineering bituminous concrete such as water conservancy and hydropower or cement concrete, particularly the ventilative proving installation in a kind of negative pressure surface.
Background technology
The test of existing bituminous concrete and the anti-permeability performance of cement concrete, mostly in construction period, carry out synchronized sampling, moulding test, and be still blank for the permeability resistance test of built bituminous concrete or cement concrete buildings.Wherein, mentioned in " hydraulic asphalt concrete testing regulations " DL/T 5362-2006 medium pitch concrete permeability non destructive testing and adopted intelligent gas penetration potential, this instrument adopts the mercury slug pressurization, vacuumizes, the one, carry inconvenience, easily damage, the 2nd, not environmental protection, the danger that exists mercury to reveal.
The utility model content
The purpose of this utility model is to provide a kind of negative pressure surface ventilative proving installation, can realize the permeability resistance of built bituminous concrete or cement concrete buildings is tested, and be easy to carry, easy to operate, safety, environmental protection.
The purpose of this utility model is achieved in that the ventilative proving installation in a kind of negative pressure surface, connecting standpipe on the through hole that bottom surface is uncovered its end face of casing shape air chamber, connecting negative tube on the through hole of standpipe tube wall, negative tube is connecting vacuum pump, upper end at standpipe is installed with vacuum meter, sucker is installed below air chamber, at the center of sucker, bleeder vent is being set, the O-ring seal matched with sucker bottom outside anchor ring is being set below sucker.
Test bituminous concrete or cement concrete surface perviousness, adopt the principle of the ventilative test in negative pressure surface as follows: to adopt the sucker of fixed size, determine ventilative area; Sucker and testee surface of contact, first by outer thick interior thin rubber seal, and the encapsulant such as butter in addition, by whole sucker and air chamber sealing; Again logical external manually or electric vacuum pump extract certain negative pressure, and be communicated with vacuum meter; After certain hour, the variation of vacuum meter reading, the surperficial permeation of reflection testee, to reflect its permeance property.The utility model is fully not identical with the permeability resistance tester of existing carpenter's bituminous concrete, the structure that do not adopt the mercury slug pressurization, vacuumizes, thus stopped the danger that watermark is revealed, free from environmental pollution, and be easy to carry, easy to operate.
The utility model has been realized the permeability resistance test to built bituminous concrete or cement concrete buildings, and is easy to carry, easy to operate, safety, environmental protection.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model will be further described, and Fig. 1 is structural representation of the present utility model.
Embodiment
The ventilative proving installation in a kind of negative pressure surface, as shown in Figure 1, connecting standpipe 2 on the through hole that bottom surface is uncovered casing air chamber 6 its end faces, connecting negative tube 4 on the through hole of standpipe 2 tube walls, negative tube 4 is connecting vacuum pump, in the upper end of standpipe 2, vacuum meter 1 is installed, and sucker 7 is installed below air chamber 6, at the center of sucker 7, bleeder vent 9 is being set, the O-ring seal 8 matched with sucker bottom outside anchor ring is being set below sucker 7.The first stop valve 5 is installed on negative tube 4.The second stop valve 3 is installed on the standpipe 2 between negative tube 4 and vacuum meter 1.The shape of cross section of O-ring seal 8 is right-angled trapezium, and the right-angle side waist is positioned at the end face of O-ring seal, and upper base is positioned at the medial surface of O-ring seal.The diameter of sucker bleeder vent 9 is 8-12 ㎜.Air chamber 6 is the truncated cone-shaped casing.Sucker 7 is disc, and the diameter of sucker 7 is larger than the diameter of air chamber 6.
Using method of the present utility model:
1, choose comparatively smooth position, testee surface, clear up its surface, and the ventilative proving installation in negative pressure surface is placed in to its surface, make sucker and testee surface substantially bonding closely.
2, evenly be coated with encapsulants such as touching butter on the rubber seal of sucker, gently be depressed into the testee surface.
3, close testing valve, open negative pressure valve, connect the true pump of external sky and extract negative pressure, and check whether the sucker periphery has gas leak phenomenon.
If 4 check without peripheral gas leak phenomenon, while negative pressure being evacuated to 90kPa, and close negative pressure valve, open testing valve, read the vacuum meter counting, and start timing;
5, after the timing certain hour, then read the vacuum meter reading, and can calculate per minute, the numerical value that vacuum gauge pressure descends, this numerical value can reflect the data of testee surface permeation.
Claims (7)
1. the ventilative proving installation in negative pressure surface, it is characterized in that: on the through hole that bottom surface is uncovered its end face of casing shape air chamber (6), connecting standpipe (2), connecting negative tube (4) on the through hole of standpipe (2) tube wall, negative tube (4) is connecting vacuum pump, in the upper end of standpipe (2), vacuum meter (1) is installed, sucker (7) is installed below air chamber (6), at the center of sucker (7), bleeder vent (9) is being set, the O-ring seal (8) matched with sucker bottom outside anchor ring is being set below sucker (7).
2. the ventilative proving installation in a kind of negative pressure according to claim 1 surface, is characterized in that: the first stop valve (5) is installed on negative tube (4).
3. the ventilative proving installation in a kind of negative pressure according to claim 1 surface, is characterized in that: on the standpipe (2) be positioned between negative tube (4) and vacuum meter (1), the second stop valve (3) is installed.
4. the ventilative proving installation in a kind of negative pressure according to claim 1 surface, it is characterized in that: the shape of cross section of O-ring seal (8) is right-angled trapezium, and the right-angle side waist is positioned at the end face of O-ring seal, and upper base is positioned at the medial surface of O-ring seal.
5. the ventilative proving installation in a kind of negative pressure according to claim 1 surface, it is characterized in that: the diameter of sucker bleeder vent (9) is 8-12 ㎜.
6. the ventilative proving installation in a kind of negative pressure according to claim 1 surface, it is characterized in that: air chamber (6) is the truncated cone-shaped casing.
7. the ventilative proving installation in a kind of negative pressure according to claim 1 surface, it is characterized in that: sucker (7) is disc, and the diameter of sucker (7) is larger than the diameter of air chamber (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320448176.4U CN203376229U (en) | 2013-07-25 | 2013-07-25 | Negative-pressure test device for surface air permeability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320448176.4U CN203376229U (en) | 2013-07-25 | 2013-07-25 | Negative-pressure test device for surface air permeability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203376229U true CN203376229U (en) | 2014-01-01 |
Family
ID=49838753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320448176.4U Expired - Fee Related CN203376229U (en) | 2013-07-25 | 2013-07-25 | Negative-pressure test device for surface air permeability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203376229U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158138A (en) * | 2015-08-05 | 2015-12-16 | 宁波大学 | Detection apparatus of soil permeability |
| CN107063968A (en) * | 2017-05-02 | 2017-08-18 | 三峡大学 | Concrete gas testing permeability device and method |
| CN110865001A (en) * | 2019-11-29 | 2020-03-06 | 中南大学 | Testing device and testing method for surface permeability of cement-based material |
-
2013
- 2013-07-25 CN CN201320448176.4U patent/CN203376229U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158138A (en) * | 2015-08-05 | 2015-12-16 | 宁波大学 | Detection apparatus of soil permeability |
| CN107063968A (en) * | 2017-05-02 | 2017-08-18 | 三峡大学 | Concrete gas testing permeability device and method |
| CN107063968B (en) * | 2017-05-02 | 2023-06-13 | 三峡大学 | Concrete gas permeability testing device and method |
| CN110865001A (en) * | 2019-11-29 | 2020-03-06 | 中南大学 | Testing device and testing method for surface permeability of cement-based material |
| CN110865001B (en) * | 2019-11-29 | 2024-05-14 | 中南大学 | Cement-based material surface permeability testing device and testing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103235107B (en) | Pressure plate testing device capable of controlling suction force by negative pore water pressure | |
| CN203785731U (en) | Device for measuring volume of irregular enclosed container | |
| CN106370580B (en) | Quick penetration test device suitable for low-permeability medium | |
| CN203376229U (en) | Negative-pressure test device for surface air permeability | |
| CN105866000A (en) | Seepage testing apparatus and method for rock with single fracture | |
| CN104330132A (en) | Device and method for measuring underground water level under negative pressure condition | |
| CN201130079Y (en) | Seal pipeline air tightness detecting device | |
| CN207081510U (en) | A kind of miniature positive/negative-pressure measurement pore water pressure sensor | |
| CN104316227B (en) | A kind of two-sided pressure sensing type soil pressure sensor | |
| CN204374046U (en) | A kind of negative-pressure air-flow that utilizes detects the aging device of curtain wall fluid sealant | |
| CN107238461A (en) | A kind of miniature positive/negative-pressure measurement pore water pressure sensor | |
| CN105466634B (en) | A kind of pore pressure gauge calibration system | |
| CN102445185A (en) | Leveling instrument for building | |
| CN202869736U (en) | Manometer protection device | |
| CN203643000U (en) | Single pipe liquid level sensor | |
| CN201281590Y (en) | Maximum hole diameter detection device for battery separator | |
| CN204359609U (en) | A kind of curtain wall fluid sealant degradation detecting device | |
| CN204594855U (en) | The instrument of tunnel concrete water pressure permeability test under Simulated Water | |
| CN105300846B (en) | A kind of monitoring method for meter level dimensional area liquid medium measuring surface pressure | |
| CN209446235U (en) | Adopt hydraulic portable assembly type structure side fascia detection device | |
| CN204535940U (en) | Hydraulic asphalt concrete Coating combination air-tightness detecting instrument | |
| CN205403773U (en) | Measuring device is predetermine to hydrostatic level appearance location elevation | |
| CN209446236U (en) | Adopt portable assembly type structure side fascia detection device of atmospheric pressure | |
| CN204188219U (en) | A kind of two test tube liquid level gauge | |
| CN202974814U (en) | Device for indoor measuring of permeability of cement mixing pile in horizontal direction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20140725 |
|
| EXPY | Termination of patent right or utility model |