CN110608847A - External pressure testing system for building gap - Google Patents
External pressure testing system for building gap Download PDFInfo
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- CN110608847A CN110608847A CN201810615480.0A CN201810615480A CN110608847A CN 110608847 A CN110608847 A CN 110608847A CN 201810615480 A CN201810615480 A CN 201810615480A CN 110608847 A CN110608847 A CN 110608847A
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses an external pressure test system for a building gap, which comprises an environmental system, a power source and a measurement and control system, wherein the environmental system is arranged around a tested piece on a wall body; the environment simulating system consists of a water spraying nozzle controlled by a miniature water pump and a simulating pressure tank fixed on the opening at the inner side of the window. The simulation pressure box is characterized in that an organic glass panel is connected with a rectangular stainless steel tube frame body through angle aluminum and screws, and is fixed on a window opening through a support piece to form a static pressure box space; a water receiving tank is arranged below the net rack on which the water spraying nozzle is installed, the outer side edge of the top of the water receiving tank is rotatably connected to the bottom of the net rack through a rotating shaft, the other side surface of the water receiving tank, which is arranged by self weight, is in contact with a wall body, so that water sprayed and gathered by the water spraying nozzle can be collected, and the bottom of the water receiving tank is connected with a drain pipe; and a branch pipeline is connected on the air pipe between the power box and the simulation pressure box, and a pressure release valve is connected on the branch pipeline. The invention also saves water and is safer.
Description
Technical Field
The invention relates to the field of buildings, in particular to an external pressure testing system for a building gap.
Background
The existing door and window performance detection is laboratory detection, the detection result can only be responsible for a sample window, the actual condition of engineering cannot be reflected, and the defect that the product performance of a sample-sending door and window product is inconsistent with the quality of the engineering door and window product exists. Because the window frame is manufactured, the auxiliary frame, the glass and part of accessories are installed after the window frame is installed on the wall, and the manufacturing and installation are not a manufacturer, the liability and disputes are always caused, and the fundamental reason is that the installation quality of the window and the door cannot be detected on site due to the huge and complicated detection equipment.
Disclosure of Invention
The present invention is directed to an external pressure testing system for building gaps, which solves the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a system for testing external pressure at a building gap comprises an environmental system arranged around a tested piece on a wall body, a power source and a measurement and control system which are used for passing through the system; the simulation pressure box is formed by an organic glass panel and a rectangular stainless steel pipe frame body which are connected by angle aluminum and screws and fixed on the window opening through a support piece to form a static pressure box space; the water spraying nozzles are four copper umbrella-shaped fog-shaped nozzles and are fixed on a spraying frame made of an aluminum alloy square tube, and the spraying frame is arranged at an opening on the outer side of the window; a water receiving tank is arranged below the net rack on which the water spraying nozzle is installed, the outer side edge of the top of the water receiving tank is rotatably connected to the bottom of the net rack through a rotating shaft, the other side surface of the water receiving tank, which is arranged by self weight, is in contact with a wall body, so that water sprayed and gathered by the water spraying nozzle can be collected, and the bottom of the water receiving tank is connected with a drain pipe; and a branch pipeline is connected to the air pipe between the power box and the simulation pressure box, and a pressure release valve is connected to the branch pipeline and used for ensuring the pressure stability in the simulation pressure box.
As a further scheme of the invention: the power source is arranged in the power box, 2-4 fans connected in parallel supply air to the simulation pressure box through the positive pressure air pipe and the negative pressure air pipe, the power box is divided into a positive pressure area and a negative pressure area by a partition plate and is communicated with the positive pressure air pipe and the negative pressure air pipe through a vent, piston valves for adjusting air positions are arranged in the two air pipes respectively, a screw rod connected with the centers of the piston valves is connected with a driving motor, and the positions of the piston valves and the flow rate are adjusted according to feedback signals of a pressure sensor.
As a further scheme of the invention: the measurement and control system collects and collects displacement signals, wind speed signals, temperature, humidity and atmospheric pressure signals and gas signals of a pressure box by a displacement sensor, a pressure sensor and a temperature and humidity sensor which are arranged around a tested piece, the displacement signals, the wind speed signals, the temperature, the humidity and the atmospheric pressure signals are converted into electric signals through a C/V conversion circuit, a digital I/O control panel inputs a power supply and a flow measurement system into a measurement and control microcomputer for data processing, a control signal is output to a power box, and a test result is output by a printer.
As a further scheme of the invention: the temperature and humidity sensor in the measurement and control system is a polymer film capacitance type humidity sensitive element and a semiconductor integrated temperature sensor.
As a further scheme of the invention: the displacement sensor is a differential transformer sensor, and the pressure sensor adopts a diffused silicon sensitive element and is arranged on a displacement sensor bracket.
Compared with the prior art, the invention has the beneficial effects that:
the invention solves the defect that the performance of the sample window to be inspected is inconsistent with the quality of the engineering door and window products, can detect the installation quality of the door and window, is consistent with the dynamic wind pressure detection equipment of the door and window of a laboratory building, has the advantages of simple structure, convenient carrying and use, accuracy, reliability and low cost by the automatic processing of a computer in the whole detection process and the operation in a man-machine conversation mode through the selection of a main menu, is used for detecting the air permeability, the rainwater leakage and the wind pressure deformation performance of the door and window of the building after being installed at the opening of a wall body on site, and is suitable for the site detection of the engineering acceptance of quality supervision. The invention also saves water and is safer.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the power box.
Fig. 3 is a sectional view taken along line a-a of fig. 2.
Fig. 4 is a front view of a simulated pressure tank.
Fig. 5 is a cross-sectional view of fig. 4A-a.
Fig. 6 is a cross-sectional view of fig. 4B-B.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, in an embodiment of the present invention, an external pressure testing system for a building gap includes an environmental system disposed around a tested object 4 on a wall 1, a power source and a measurement and control system passing through the environmental system.
The environment simulating system consists of a water spraying nozzle 2 controlled by a micro water pump and a simulating pressure tank 7 fixed on an opening on the inner side of the window. The simulation pressure box 7 is formed by connecting an organic glass panel and a rectangular stainless steel tube frame body 21 by angle aluminum 22 and screws 20, and is fixed on a window opening through a support part to form a static pressure box space.
The water spraying nozzle 2 is provided with four copper umbrella-shaped fog-shaped nozzles and is fixed on a spraying frame 3 made of an aluminum alloy square tube, and the spraying frame is installed at an opening on the outer side of the window.
The net rack 3 below of the installation of trickle shower nozzle 2 is provided with water receiving tank 28, and the top outside limit of water receiving tank 28 rotates through the pivot and connects in the bottom of net rack 3, and its another side that the dead weight of water receiving tank 28 set up contacts with wall body 1 to can collect the water that trickle shower nozzle 2 blowout and assemble, the bottom of water receiving tank 28 is connected with drain pipe 27, so that play the purpose of water conservation, also avoid all everywhere of rivers to be.
And a branch pipeline 25 is connected to the air pipe between the power box 11 and the simulation pressure box 7, and a pressure release valve 26 is connected to the branch pipeline 25 and used for ensuring the pressure stability in the simulation pressure box 7.
The power source is arranged in a power box 11, 2-4 fans 18 connected in parallel supply air to the simulation pressure box 7 through a positive pressure air pipe 12 and a negative pressure air pipe 24, the power box 11 is divided into a positive pressure area and a negative pressure area by a partition plate, the positive pressure air pipe 12 and the negative pressure air pipe 24 are communicated through a vent 23, piston valves 13 for adjusting air positions are arranged in the two air pipes, a screw 14 connected with the centers of the piston valves 13 is connected with a driving motor 16, and the positions of the piston valves and the flow rate are adjusted according to feedback signals of a pressure sensor.
The measurement and control system collects displacement signals, wind speed signals, temperature, humidity and atmospheric pressure signals and gas signals of a pressure box by a displacement sensor 5, a pressure sensor 8 and a temperature and humidity sensor which are arranged around a tested piece, converts the signals into electric signals through a C/V conversion circuit, inputs a power supply and a flow measurement system into a measurement and control microcomputer 10 for data processing through a digital I/O control panel, outputs control signals to a power box, and outputs test results through a printer 9. The temperature and humidity sensor in the measurement and control system is a polymer film capacitance type humidity sensitive element and a semiconductor integrated temperature sensor. The displacement sensor 5 is a differential transformer sensor, and the pressure sensor adopts a diffused silicon sensitive element and is arranged on the displacement sensor bracket 5.
The detection working process of the invention is as follows: the sensors collect displacement signals, temperature signals, humidity signals, atmospheric signals, wind speed signals, pressure signals and other non-electric quantity signals, the signals are transmitted to the transmitter to be converted into voltage and current signals, the voltage and current signals are transmitted to the collector and then input into the portable computer to be subjected to data processing and output fan control signals through the detection condition setting module, the air permeability module, the rainwater leakage performance module and the wind pressure deformation performance detection module, and the air pressure control process is closed-loop feedback control. When negative pressure is detected, a piston valve of a negative pressure area moves to the head leftwards, air enters from a negative pressure air pipe, is pressurized by a fan and then is divided into two parts by the piston valve through a vent, and one part enters a pressure box to provide air pressure for the pressure box; the other part is directly communicated with the atmosphere, and the proportion of the two parts of gas can be changed by adjusting the position of the piston valve, thereby achieving the purpose of regulating the pressure. Meanwhile, no matter the positive pressure piston valve is in any position, the fan can be always in a full-flow working state, and the safety of the fan is ensured. When positive pressure detection is performed, contrary to negative pressure detection, the positive pressure piston valve moves to the left, and the negative pressure piston valve is adjusted to change the pressure difference. At this time, air is pumped into the pressure box, pressure difference is generated on the surface of the test piece, negative pressure is generated in the box, high pressure is generated outside the chamber, and the detection is equivalent to positive pressure detection under the detection conditions of a standard specified laboratory.
According to the national standard GB 7106-7108-86, the main technical indexes of the invention are as follows: the maximum testable piece specification is 1500 multiplied by 1500 mm; air permeability: flow 200m3/h, pressure differential: +/-100 Pa; rainwater permeability: the amount of water sprayed is 21m2.min, and the pressure difference is as follows: 500 Pa; wind pressure deformation performance: displacement 0-20mm, pressure difference: and +/-3500 Pa.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (5)
1. A system for testing external pressure at a building gap comprises an environmental system arranged around a tested piece on a wall body, a power source and a measurement and control system for passing through the system, and is characterized in that the environmental system is a pressure-sensitive adhesive tape; the simulation pressure box is formed by an organic glass panel and a rectangular stainless steel pipe frame body which are connected by angle aluminum and screws and fixed on the window opening through a support piece to form a static pressure box space; the water spraying nozzles are four copper umbrella-shaped fog-shaped nozzles and are fixed on a spraying frame made of an aluminum alloy square tube, and the spraying frame is arranged at an opening on the outer side of the window; a water receiving tank is arranged below the net rack on which the water spraying nozzle is installed, the outer side edge of the top of the water receiving tank is rotatably connected to the bottom of the net rack through a rotating shaft, the other side surface of the water receiving tank, which is arranged by self weight, is in contact with a wall body, so that water sprayed and gathered by the water spraying nozzle can be collected, and the bottom of the water receiving tank is connected with a drain pipe; and a branch pipeline is connected to the air pipe between the power box and the simulation pressure box, and a pressure release valve is connected to the branch pipeline and used for ensuring the pressure stability in the simulation pressure box.
2. The system for testing the external pressure at the gap of the building as claimed in claim 1, wherein the power source is arranged in a power box, 2-4 fans connected in parallel supply air to the simulation pressure box through a positive pressure air pipe and a negative pressure air pipe, the power box is divided into a positive pressure area and a negative pressure area by a partition plate, the positive pressure air pipe and the negative pressure air pipe are communicated through a vent, piston valves for adjusting air positions are respectively arranged in the two air pipes, a screw rod connected with the centers of the piston valves is connected with a driving motor, and the positions of the piston valves and the flow rate are adjusted according to feedback signals of a pressure sensor.
3. The system for testing the external pressure at the gap of the building as claimed in claim 1, wherein the measurement and control system collects and collects displacement signals, wind speed signals, temperature, humidity and atmospheric pressure signals, pressure box gas signals, and converts the signals into electric signals through a C/V conversion circuit by a displacement sensor, a pressure sensor and a temperature and humidity sensor which are arranged around a tested piece, a power supply and a flow measurement system are input into a measurement and control microcomputer for data processing by a digital I/O control board, a control signal is output to a power box, and a test result is output by a printer.
4. The system for testing the external pressure at the building gap according to claim 3, wherein the temperature and humidity sensor in the measurement and control system is a polymer film capacitive humidity sensor and a semiconductor integrated temperature sensor.
5. The system for testing external pressure at a building gap according to claim 3, wherein the displacement sensor is a differential transformer sensor, and the pressure sensor is a diffused silicon sensor disposed on the displacement sensor support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810615480.0A CN110608847A (en) | 2018-06-14 | 2018-06-14 | External pressure testing system for building gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810615480.0A CN110608847A (en) | 2018-06-14 | 2018-06-14 | External pressure testing system for building gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110608847A true CN110608847A (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810615480.0A Pending CN110608847A (en) | 2018-06-14 | 2018-06-14 | External pressure testing system for building gap |
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| Country | Link |
|---|---|
| CN (1) | CN110608847A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112731457A (en) * | 2020-12-31 | 2021-04-30 | 深圳市天健工程技术有限公司 | Three-dimensional geographic information safety monitoring method based on Beidou positioning system |
| CN114323453A (en) * | 2021-12-29 | 2022-04-12 | 武汉泰格尔科技发展有限公司 | Negative pressure test device in cabin and operation method thereof |
-
2018
- 2018-06-14 CN CN201810615480.0A patent/CN110608847A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112731457A (en) * | 2020-12-31 | 2021-04-30 | 深圳市天健工程技术有限公司 | Three-dimensional geographic information safety monitoring method based on Beidou positioning system |
| CN114323453A (en) * | 2021-12-29 | 2022-04-12 | 武汉泰格尔科技发展有限公司 | Negative pressure test device in cabin and operation method thereof |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191224 |
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| WD01 | Invention patent application deemed withdrawn after publication |