CN212410392U - Concrete air tightness detector - Google Patents
Concrete air tightness detector Download PDFInfo
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- CN212410392U CN212410392U CN202021275542.7U CN202021275542U CN212410392U CN 212410392 U CN212410392 U CN 212410392U CN 202021275542 U CN202021275542 U CN 202021275542U CN 212410392 U CN212410392 U CN 212410392U
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Abstract
A concrete air tightness detector comprises an electric control host, a pressurization air pump and a detection box body assembly, wherein the detection box body assembly comprises an upper sleeve body, a middle cylinder and a lower sleeve body, and the middle cylinder is detachably connected with the upper sleeve body and the lower sleeve body respectively; an air inlet is formed in the upper sleeve body, a high-pressure quick sealing connection valve is arranged on the air inlet, the pressurization air pump is in butt joint with the high-pressure quick sealing connection valve through an air inlet pipe assembly, and an upper movable sealing sleeve assembly and a first air cylinder assembly are arranged in the upper sleeve body; the lower sleeve body is internally provided with a lower movable sealing sleeve component and a second air cylinder component, the lower sleeve body is provided with an air outlet hole, the air outlet hole is connected with a gas flowmeter, the other end of the gas flowmeter is connected with a gas check valve, and the gas check valve is connected with a gas storage box body through an air outlet pipe component. The utility model discloses carried out standardized control to the testing environment of initialization, reduced the variable that exists in the testing process, measuring error reduces greatly for the evaluation concrete impermeability coefficient that test gained data can be fine.
Description
Technical Field
The utility model belongs to the technical field of the technique that the concrete performance for road and bridge detected and specifically relates to a concrete gas tightness detector.
Background
The concrete is artificial stone which is prepared by taking cement as a main cementing material, adding water, sand, stones and chemical additives and mineral admixtures if necessary, mixing the materials according to a proper proportion, uniformly stirring, densely molding, curing and hardening. Concrete is mainly divided into two stages and states: plastic state before setting and hardening, namely fresh concrete or concrete mixture; hardened, i.e. hardened concrete or concrete.
The impermeability of concrete has long been a key element in the study and design of the durability of concrete structures. The existing concrete impermeability test method can be divided into three types according to different permeable mediums: water permeation, chloride ion permeation, and gas permeation. At present, the water permeation method and the chloride ion permeation method are mainly adopted at home and abroad to research the impermeability of the concrete.
Along with the development of concrete materials towards high strength, high performance and ultrahigh performance, the water-cement ratio of concrete is greatly reduced, and the use of ultrafine admixtures such as silica fume and the like ensures that the compactness of the high strength, high performance concrete and the ultrahigh performance concrete is extremely high, the penetration depth of two penetration media, namely water and chloride ions in the existing water penetration method and chloride ion penetration method, in the high strength, high performance concrete and the ultrahigh performance concrete is extremely low, the impermeability of the concrete cannot be accurately represented, and particularly when the chloride ion penetration method is used for the ultrahigh performance concrete containing steel fibers, the steel fibers are mismatched in the testing principle due to the strong electrical conductivity of the steel fibers. Compared with the former two, the gas permeation method has the advantages that gas molecules can more easily penetrate through the pore structure of the cement-based material, particularly inert gases such as nitrogen are used as a permeation medium, the permeation process and the permeation coefficient can more accurately reflect the resistance of the pore structure of the cement-based material to the invasion of an external medium, and therefore the gas permeation method is not influenced by concrete components and is easy to penetrate through a micro-pore structure.
However, the existing air pressure difference value measuring method and device structure have poor control on variables, have large measuring errors and cannot well evaluate the concrete impermeability coefficient.
Disclosure of Invention
In order to overcome the above-mentioned not enough of prior art, the utility model provides a concrete air tightness detector.
The technical proposal of the utility model for solving the technical problem is that: a concrete air tightness detector comprises an electric control host, a pressurizing air pump controlled by the electric control host and a detection box body assembly for containing a concrete sample, wherein the detection box body assembly comprises an upper sleeve body, a middle cylinder and a lower sleeve body, and the middle cylinder is detachably connected with the upper sleeve body and the lower sleeve body respectively;
the upper sleeve body is internally provided with an upper movable sealing sleeve assembly and a first cylinder assembly for driving the upper movable sealing sleeve assembly, and the upper movable sealing sleeve assembly can be abutted against the upper end of the concrete sample and form sealing fit;
the lower sleeve body is internally provided with a lower movable sealing sleeve component and a second air cylinder component for driving the lower movable sealing sleeve component, the lower movable sealing sleeve component can be abutted against the lower end of a concrete sample and forms sealing fit, the lower sleeve body is further provided with an air outlet, the air outlet is connected with a gas flowmeter, the other end of the gas flowmeter is connected with a gas check valve, and the gas check valve is further connected with a gas storage box body through an air outlet component.
Preferably, the upper sleeve body and the lower sleeve body are internally provided with air pressure detectors, and the air pressure detectors are in communication connection with the electric control host.
Preferably, the device also comprises a vacuum pump which is respectively communicated with the upper sleeve body, the lower sleeve body and the gas storage box body through a multi-way valve.
Preferably, the outer wall of the upper part of the middle cylinder is provided with a first rotary buckle, the inner wall of the upper sleeve body is provided with a first rotary groove, and the first rotary buckle is buckled into the first rotary groove;
the outer wall of the lower part of the middle cylinder is provided with a second rotary groove, the inner wall of the lower sleeve body is provided with a second rotary buckle, and the second rotary buckle is buckled into the second rotary groove.
Preferably, the pressurizing air pump is installed in the electric control host, and the electric control host is provided with an air pump pressure indicator corresponding to the pressurizing air pump, a first pressure indicator corresponding to the air pressure detector in the upper sleeve body, a second pressure indicator corresponding to the air pressure detector in the lower sleeve body, and a timer.
Preferably, the upper movable sealing sleeve assembly comprises a first left semicircular sealing sleeve and a first right semicircular sealing sleeve which are independently arranged, and the first left semicircular sealing sleeve can be abutted against the first right semicircular sealing sleeve and folded into a complete circular shape;
lower movable sealing sleeve subassembly including the left semicircle seal cover of second and the right semicircle seal cover of second that independent set up, the left semicircle seal cover of second can with the right semicircle seal cover butt of second and fold and be complete circular form.
The beneficial effects of the utility model reside in that: 1. the initialized detection environment is subjected to standardized control, so that variables existing in the detection process are reduced, and the measurement error is greatly reduced, so that the data obtained by testing can well evaluate the concrete impermeability coefficient; 2. through the arrangement of the upper movable sealing sleeve assembly, the lower movable sealing sleeve assembly and the gas storage box body, a detection environment with good sealing conditions can be provided, the occurrence of gas leakage conditions is reduced, and further detection data are accurate.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the electric control host of the present invention.
FIG. 3 is a schematic structural view of an upper live packing gland assembly and a lower live packing gland assembly.
Fig. 4 is a schematic structural view of the middle barrel.
Fig. 5 is a schematic structural view of the upper cover body.
Fig. 6 is a schematic structural view of the lower case body.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 6, a concrete air tightness detector comprises an electric control host 1, a pressurizing air pump 2 controlled by the electric control host 1, and a detection box body assembly for accommodating a concrete sample 3, wherein the detection box body assembly comprises an upper sleeve body 4, a middle cylinder 5 and a lower sleeve body 6, and the middle cylinder 5 is detachably connected with the upper sleeve body 4 and the lower sleeve body 6 respectively;
an air inlet 16 is formed in the upper sleeve body 4, a high-pressure quick sealing connection valve 7 is arranged on the air inlet 16, the pressurizing air pump 2 is in butt joint with the high-pressure quick sealing connection valve 7 through an air inlet pipe assembly 17, an upper movable sealing sleeve assembly 8 and a first air cylinder assembly 9 for driving the upper movable sealing sleeve assembly 8 are arranged in the upper sleeve body 4, and the upper movable sealing sleeve assembly 8 can be abutted against the upper end of the concrete sample 3 and form sealing fit;
the lower sleeve 6 is internally provided with a lower movable sealing sleeve assembly 10 and a second air cylinder assembly 11 used for driving the lower movable sealing sleeve assembly 10, the lower movable sealing sleeve assembly 10 can be abutted against the lower end of the concrete sample 3 and forms a sealing fit, the lower sleeve 6 is further provided with an air outlet 12, the air outlet 12 is connected with a gas flowmeter 33, the other end of the gas flowmeter 33 is connected with a gas check valve 13, and the gas check valve 13 is further connected with a gas storage box body 15 through an air outlet pipe assembly 14.
In this embodiment, the upper sleeve body 4 and the lower sleeve body 6 are both provided with an air pressure detector 18, and the air pressure detector 18 is in communication connection with the electronic control host 1. Through the setting of atmospheric pressure detector 18, can real-time detection go up the atmospheric pressure in the cover body 4 and the lower cover body 6, firstly in case the gas leakage condition appears when detecting and can in time discover and maintain, secondly can carry out real-time pressure observation in the cover body 4 and the lower cover body 6 in the testing process, prevent unexpected the emergence, thirdly can carry out contrastive analysis through the data of gathering different periods for the gas tightness testing result of the concrete sample 3 that the later stage reachs is more comprehensive, accurate.
In the existing device, due to the structural defects, the initial stage of each concrete sample 3 cannot be under the same air pressure, so certain errors certainly exist. In order to solve the above defects, the utility model discloses in still include vacuum pump 19, vacuum pump 19 through a multi-ported valve 20 respectively with upper cover body 4, lower cover body 6 and gas storage box 15 intercommunication. After the assembly of the components is completed and before the test is started, the upper sleeve body 4, the lower sleeve body 6 and the gas storage box body 15 are vacuumized by the vacuum pump component, so that the test accuracy is improved.
In this embodiment, the detachable structure between the middle barrel 5 and the upper sleeve 4 and the lower sleeve 6 is: a first rotary buckle 21 is arranged on the outer wall of the upper part of the middle barrel 5, a first rotary groove 22 is arranged on the inner wall of the upper sleeve body 4, and the first rotary buckle 21 is buckled into the first rotary groove 22; a second rotary groove 23 is formed in the outer wall of the lower portion of the middle barrel 5, a second rotary buckle 24 is formed in the inner wall of the lower sleeve body 6, and the second rotary buckle 24 is buckled into the second rotary groove 23. Through the cooperation of first spiral shell 21 and first spiral groove 22 and the cooperation of second spiral shell 24 and second spiral groove 23, the dismouting is very convenient, can make upper cover body 4, well section of thick bamboo 5 and lower cover body 6 link together firmly, and is enough reliable and stable during the test.
The utility model discloses in, pressurization air pump 2 install in automatically controlled host computer 1, automatically controlled host computer 1 on be equipped with pressurization air pump 2 corresponding air pump pressure indicator 25, with the first pressure indicator 26 corresponding of the atmospheric pressure detector 18 in the upper cover body 4, with the second pressure indicator 27 corresponding of the atmospheric pressure detector 18 in the lower cover body 6 and time-recorder 28. The various indicating tables and the timer 28 are integrated on the electric control host 1, so that the operator can conveniently perform comprehensive control, observation, analysis and recording.
Preferably, the upper movable sealing sleeve assembly 8 comprises a first left semicircular sealing sleeve 29 and a first right semicircular sealing sleeve 30 which are independently arranged, and the first left semicircular sealing sleeve 29 can be abutted against the first right semicircular sealing sleeve 30 and folded into a complete circular shape; lower movable sealing sleeve assembly 10 including the second left half circle seal cover 31 and the second right half circle seal cover 32 of independent setting, the second left half circle seal cover 31 can with the second right half circle seal cover 32 butt and fold and be complete circular form. Adopt this preferred structure, make things convenient for putting into and taking out the operation of concrete sample 3, also ensure simultaneously that middle and upper movable sealing bush subassembly 8 and lower movable sealing bush subassembly 10 can form effectual sealed cooperation with the butt of concrete sample 3 respectively in the testing process.
The utility model provides a concrete gas tightness detector of brand-new structure, its operating procedure is:
1. preparing a concrete sample 3, and pre-assembling all parts of the concrete air tightness detector completely in advance;
2. putting a concrete sample 3 into the middle cylinder 5, screwing the middle cylinder 5 and the upper sleeve body 4 together, and screwing the lower sleeve body 6 and the middle cylinder 5 together;
3. starting the first cylinder assembly 9 and the second cylinder assembly 11, so that the upper movable sealing sleeve assembly 8 can be abutted against the upper end of the concrete sample 3 and form sealing fit, and meanwhile, the lower movable sealing sleeve assembly 10 can be abutted against the lower end of the concrete sample 3 and form sealing fit;
4. starting a vacuum pump, and vacuumizing the interiors of the upper sleeve body 4, the lower sleeve body 6 and the gas storage box body 15 to form a standardized initial air pressure detection environment;
5. starting the pressurizing air pump 2, pressing air into the upper sleeve body 4, controlling the air pressure according to a preset value, and stabilizing the pressure for a period of time;
6. in the detection process, according to each timing cycle, the data of the first pressure indicator 26, the second pressure indicator 27 and the flowmeter are sequentially read and recorded, and the performance data of the concrete air tightness detector is obtained through comparison calculation.
Claims (6)
1. The utility model provides a concrete air tightness detector, includes automatically controlled host computer, receives the pressurization air pump of automatically controlled host computer control and is used for holding the detection box subassembly of concrete sample, its characterized in that: the detection box body assembly comprises an upper sleeve body, a middle cylinder and a lower sleeve body, wherein the middle cylinder is detachably connected with the upper sleeve body and the lower sleeve body respectively;
the upper sleeve body is internally provided with an upper movable sealing sleeve assembly and a first cylinder assembly for driving the upper movable sealing sleeve assembly, and the upper movable sealing sleeve assembly can be abutted against the upper end of the concrete sample and form sealing fit;
the lower sleeve body is internally provided with a lower movable sealing sleeve component and a second air cylinder component for driving the lower movable sealing sleeve component, the lower movable sealing sleeve component can be abutted against the lower end of a concrete sample and forms sealing fit, the lower sleeve body is further provided with an air outlet, the air outlet is connected with a gas flowmeter, the other end of the gas flowmeter is connected with a gas check valve, and the gas check valve is further connected with a gas storage box body through an air outlet component.
2. The concrete air-tightness detector according to claim 1, characterized in that: the upper sleeve body and the lower sleeve body are internally provided with air pressure detectors, and the air pressure detectors are in communication connection with the electric control host.
3. The concrete air-tightness detector according to claim 1, characterized in that: the vacuum pump is respectively communicated with the upper sleeve body, the lower sleeve body and the gas storage box body through a multi-way valve.
4. The concrete air-tightness detector according to claim 1, characterized in that: the outer wall of the upper part of the middle cylinder is provided with a first rotary buckle, the inner wall of the upper sleeve body is provided with a first rotary groove, and the first rotary buckle is buckled into the first rotary groove;
the outer wall of the lower part of the middle cylinder is provided with a second rotary groove, the inner wall of the lower sleeve body is provided with a second rotary buckle, and the second rotary buckle is buckled into the second rotary groove.
5. The concrete air-tightness detector according to claim 2, characterized in that: the pressurization air pump is installed in the electric control host, and the electric control host is provided with an air pump pressure indicator corresponding to the pressurization air pump, a first pressure indicator corresponding to the air pressure detector in the upper sleeve body, a second pressure indicator corresponding to the air pressure detector in the lower sleeve body and a timer.
6. The concrete air-tightness detector according to claim 1, characterized in that: the upper movable sealing sleeve assembly comprises a first left semicircular sealing sleeve and a first right semicircular sealing sleeve which are independently arranged, and the first left semicircular sealing sleeve can be abutted against the first right semicircular sealing sleeve and folded into a complete circular shape;
lower movable sealing sleeve subassembly including the left semicircle seal cover of second and the right semicircle seal cover of second that independent set up, the left semicircle seal cover of second can with the right semicircle seal cover butt of second and fold and be complete circular form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021275542.7U CN212410392U (en) | 2020-07-03 | 2020-07-03 | Concrete air tightness detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021275542.7U CN212410392U (en) | 2020-07-03 | 2020-07-03 | Concrete air tightness detector |
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| CN212410392U true CN212410392U (en) | 2021-01-26 |
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| CN202021275542.7U Active CN212410392U (en) | 2020-07-03 | 2020-07-03 | Concrete air tightness detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113960294A (en) * | 2021-10-11 | 2022-01-21 | 中冶武汉冶金建筑研究院有限公司 | Device and method for testing shrinkage rate of refractory mortar in brick joints |
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2020
- 2020-07-03 CN CN202021275542.7U patent/CN212410392U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113960294A (en) * | 2021-10-11 | 2022-01-21 | 中冶武汉冶金建筑研究院有限公司 | Device and method for testing shrinkage rate of refractory mortar in brick joints |
| CN113960294B (en) * | 2021-10-11 | 2023-12-29 | 中冶武汉冶金建筑研究院有限公司 | Device and method for testing shrinkage rate of refractory mortar in brick joint |
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