A calibration device for a building component testing machine and its simulation window

Abstract

The present invention relates to a calibration device for a building component testing machine and a simulation window thereof. The calibration device for the building component testing machine includes a flowmeter for calibration and a simulation window. The simulation window includes a simulation window body for blocking a building component installation opening of a corresponding building component testing machine. A ventilation opening is formed in the simulation window body, and a flow control valve is arranged at the ventilation opening. The flow control valve is a pneumatic, hydraulic or electric flow control valve. By adjusting the opening cross-sectional area of the ventilation opening through the flow control valve, different lengths of door and window opening seams can be simulated. The pneumatic, hydraulic or electric flow control valve can achieve out-of-box control, and it is not necessary to remove the box cover each time to complete the simulation of different lengths of opening seams, nor is it necessary to disassemble and replace the simulation window, making the calibration of the working flowmeter of the building component testing machine simple and convenient.

Description

Technical Field

[0001] The present invention relates to a calibration device for a building component testing machine and a simulation window in the calibration field. Background Art

[0002] Building components such as doors and windows, glass curtain walls, etc. need to be tested for some mechanical properties by a building component testing machine. For example, for doors and windows and glass curtain walls, it is necessary to test their wind pressure resistance performance, air permeability performance, and rainwater penetration performance. A testing machine that can test at least one mechanical property of building components is called a building component testing machine.

[0003] The structure of the existing building component testing machine is as Figures 1 to 2 shown: The building component testing machine includes a pressure box 3 having a front side plate 2, a rear side plate, and four surrounding side plates 1. A pressure generating device is installed on the front side plate of the pressure box. The pressure generating device includes an air supply device 4 and an air supply pipeline 9. The air supply device is a fan. An air inlet baffle 5 is arranged in the pressure box opposite to the air outlet of the air supply pipeline. An air inlet is arranged on the pressure box opposite to the air inlet baffle 5. A pressure control device 10 and a pressure sensor are arranged on the air supply pipeline. The front side plate includes a plurality of splittable horizontal plates 8 and vertical plates 7. During use, since the sizes of each door and window to be tested are different, it is necessary to select appropriate horizontal plates 8 and vertical plates 7 for assembly to form a building component installation opening 6 that is the same size as the door and window, and install the door and window to be tested, that is, the building component 12, at the building component installation opening 6. A buckling box 15 is buckled on the periphery of the building component. An air duct 11 is arranged on the buckling box 15. A working flowmeter 13 is arranged on the air duct. The working flowmeter can measure the air permeability of the door and window. The air supply device blows air into the space surrounded by the horizontal plate, the vertical plate, and the pressure box. The air inlet baffle is used to ensure the stability of the air pressure, so as to test the mechanical properties of the door and window. The pressure indication value of the pressure sensor also characterizes the mechanical properties of the building component.

[0004] The air permeability of a building component is equal to the sensor measurement value - the additional air permeability. The additional air permeability refers to the air permeability caused by the gaps between the building component and the pressure box, the gaps between the horizontal and vertical plates of the pressure box, and the self-gaps at other positions of the pressure box. Therefore, in the prior art, in order to detect the air permeability of a building component, it is necessary to measure the additional air permeability in advance through a cumbersome test method. In the prior art, there are basically two methods. The first is to install the building component at the installation opening, seal the openable gaps (window gaps) and inlaid gaps (gaps between the building component and the pressure box) on the building component, and then apply a certain pressure to obtain the additional air permeability. The second is to block the installation opening with an airtight material, and then apply a certain pressure to obtain the additional air permeability.

[0005] The length 14 of the opening seam of the door and window refers to the total length of all joints of the openable part on the door and window test piece. When testing the door and window, multiple groups of data need to be measured. For example, when the door and window are completely closed, as well as the opening seams of the door and window with different lengths and sizes. The air infiltration volume caused by the opening seam of the door and window is the main physical quantity for evaluating the door and window by the door and window testing machine. According to the corresponding regulations, it is necessary to calibrate the working flowmeter and pressure sensor of the building component testing machine regularly. The existing calibration method is to set up a simulation window, install it at the installation opening where the building component is installed during the test. A calibration flowmeter is set on the simulation window. The simulation window is used to simulate the real door and window. The working flowmeter is calibrated through the calibration flowmeter. The door and window is provided with a vent with a fixed size for simulating the length of the opening seam of the door and window. The existing technology has the following problems: when it is necessary to simulate different lengths of the opening seam of the door and window, it is necessary to replace the simulation window with vents of different sizes. Each time the simulation window is replaced, the buckle box needs to be removed, which makes the calibration process very cumbersome; in addition, the calibration flowmeter is installed on the simulation window. Due to the existence of additional air infiltration volume, the air passing through the calibration flowmeter and the working flowmeter is not equal, which will lead to inaccurate calibration of the working flowmeter. Summary of the Invention

[0006] The purpose of the present invention is to provide a calibration device for a building component testing machine that can realize the simulation adjustment of the length of the opening seam of the door and window without disassembling and replacing the simulation window; the purpose of the present invention is also to provide a simulation window used in the calibration device for the building component testing machine.

[0007] To solve the above technical problems, the technical solution of the calibration device for the building component testing machine in the present invention is as follows:

[0008] A calibration device for a building component testing machine includes a calibration flowmeter and a simulation window. The simulation window includes a simulation window body for blocking the building component installation opening of the corresponding building component testing machine. A vent is opened on the simulation window body and penetrates through the simulation window body along the thickness direction of the simulation window. A flow control valve for adjusting the air flow rate of the vent is provided at the vent. The flow control valve is a pneumatic, hydraulic or electric flow control valve.

[0009] The flow control valve is an electric flow control valve. The power motor of the electric flow control valve is fixed on the simulation window body. A battery for supplying power to the power motor is provided on the simulation window body.

[0010] The simulation window body is a square box structure. The simulation window body includes a front body plate, a rear body plate and body side plates connected between the front body plate and the rear body plate. The vent includes a front vent part opened on the front body plate and a rear vent part opened on the rear body plate. The flow control valve, the power motor and the battery are all arranged in the cavity surrounded by the front body plate, the rear body plate and the body side plates.

[0011] A standard pressure sensor is further provided on the simulation window body. The standard pressure sensor has an air inlet for communicating with the pressure box of the building component testing machine, and a trachea for communicating with the buckling box is connected to the air outlet of the standard pressure sensor.

[0012] The flowmeter for calibration and the simulation window are independently arranged. The flowmeter for calibration has a detachable air duct connection structure for detachably connecting with the tail end of the air duct on the back side of the buckling box of the building component testing machine.

[0013] The detachable air duct connection structure is a flange bolt connection structure or a connecting pipe that fits into the sleeve of the tail end of the air duct.

[0014] The technical solution of the simulation window in the present invention is as follows:

[0015] A simulation window of a calibration device for a building component testing machine, the simulation window includes a simulation window body for plugging the building component installation opening of the corresponding building component testing machine. A ventilation opening penetrating the simulation window body in the thickness direction of the simulation window is opened on the simulation window body, and a flow regulating valve for adjusting the ventilation volume of the ventilation opening is arranged at the ventilation opening. The flow regulating valve is a pneumatic, hydraulic or electric flow regulating valve.

[0016] The flow regulating valve is an electric flow regulating valve. The power motor of the electric flow regulating valve is fixed on the simulation window body, and a battery for supplying power to the power motor is arranged on the simulation window body.

[0017] The simulation window body is a square box structure. The simulation window body includes a front body plate, a rear body plate and a side body plate connected between the front body plate and the rear body plate. The ventilation opening includes a front ventilation opening part opened on the front body plate and a rear ventilation opening part opened on the rear body plate. The flow regulating valve, the power motor and the battery are all arranged in the cavity surrounded by the front body plate, the rear body plate and the side body plate.

[0018] A standard pressure sensor is further provided on the simulation window body. The standard pressure sensor has an air inlet for communicating with the pressure box of the building component testing machine, and a trachea for communicating with the buckling box is connected to the air outlet of the standard pressure sensor.

[0019] The beneficial effect of the present invention is as follows: In the present invention, by adjusting the opening cross-sectional area of the ventilation opening with the flow regulating valve, different opening lengths of doors and windows can be simulated. The pneumatic, hydraulic or electric flow regulating valve can achieve out-of-box control, and it is not necessary to remove the buckling box every time to complete the simulation of different opening lengths, nor is it necessary to disassemble and replace the simulation window, making the calibration of the working flowmeter of the building component testing machine simple and convenient. Description of the Drawings

[0020] Figure 1It is a schematic structural diagram of a building component testing machine in the background art of the present invention;

[0021] Figure 2 It is a side view of the pressure box in 1;

[0022] Figure 3 It is a usage state diagram of Embodiment 1 of the present invention;

[0023] Figure 4 It is Figure 3 a schematic structural diagram of the simulation window in;

[0024] Figure 5 It is Figure 4 a schematic structural diagram when there is no main body front plate in;

[0025] Figure 6 It is Figure 4 a side view of;

[0026] Figure 7 It is a schematic diagram of the cooperation between the flow regulating valve and the air duct in Embodiment 2 of the present invention. Specific Embodiments

[0027] An embodiment 1 of a calibration device for a building component testing machine is as Figures 3 to 6 shown:

[0028] It includes a flowmeter 20 for calibration and a simulation window 12. The simulation window includes a simulation window body for blocking the building component installation opening of the corresponding building component testing machine. A ventilation opening penetrating the simulation window body in the thickness direction is provided on the simulation window body. The simulation window body is of a square box structure, which includes a front body plate 21, a rear body plate 26, and body side plates 25 located between the front body plate and the rear body plate. The ventilation opening includes a front ventilation opening part 22 provided on the front body plate and a rear ventilation opening part 27 provided on the rear body plate. Filter meshes 23 are provided on both the front ventilation opening part and the rear ventilation opening part. A flow regulating valve is provided between the front ventilation opening part and the rear ventilation opening part. In this embodiment, the flow regulating valve is an electric butterfly valve, that is, an electric butterfly valve, which includes a valve seat 20 and a disc plate 31 rotatably matched with the valve seat and driven by a power motor 28 to rotate. The flow regulating valve is located between the front body plate and the rear body plate. The front end of the valve seat is sealed and fixed on the front body plate, and the rear end of the valve seat is sealed and fixed on the rear body plate. The electric butterfly valve belongs to the prior art, and its specific structure will not be introduced in detail here. A battery 29 for supplying power to the power motor 28 is provided on the simulation window body. The power motor is powered by the battery 29, and the power motor takes power nearby without the need to set corresponding power lines, which can avoid the influence of the buckle box and the pressure box on the power line. The power motor controls the ventilation cross-sectional area of the ventilation opening by controlling the rotation opening of the disc plate 31 to simulate different lengths of door and window opening slits. The battery and the power motor are also located in the inner cavity of the square box structure. A plurality of bolt perforations 20 are arranged at intervals along the circumference on the outer edge of the simulation window body. During use, the simulation window body can be fixed to the building component installation opening of the building component testing machine through bolts.

[0029] A standard pressure sensor 32 is further provided on the front side of the simulation window body. The standard pressure sensor 32 is located between the front body plate and the rear body plate. The standard pressure sensor has an air inlet 24 for communicating with the pressure box of the building component testing machine, and an air pipe 33 connected to the buckle box is connected to the air outlet of the standard pressure sensor.

[0030] The flowmeter for calibration has a detachable air pipe connection structure for detachably connecting with the tail end of the air pipe on the back side of the buckle box of the building component testing machine. In this embodiment, the detachable air pipe connection structure is a flange bolt connection structure 40. During use, the flowmeter for calibration can be connected in series to the air pipe through connection bolts. The flowmeter for calibration and the working flowmeter are on the same pipeline, that is, the use environment is the same, and the flowmeter for calibration can directly calibrate the working flowmeter. Stabilizers are provided at both ends of the flowmeter for calibration, so that the air flow entering the flowmeter for calibration is more uniform and stable, which is beneficial to shortening the use of the straight section in the flowmeter for calibration, thereby reducing the length of the flowmeter for calibration and making it more convenient to carry and transport.

[0031] The use of this calibration device for building component testing machines is as follows: Building component testing machines such as Figure 3As shown in the figure: It includes a pressure box 3 and a buckling box 15 arranged front and back. The pressure box includes a front side plate 2, a rear side plate, and a surrounding plate 1 located between the front side plate and the rear side plate. A building component installation opening 6 for installing corresponding building components such as glass curtain walls and doors and windows is provided on the rear side plate. A wind supply device 9 with a blower is provided on the front side plate of the pressure box. The wind supply device includes a blower 4 and an air volume regulating valve 10. A pressure sensor is connected to the wind supply device. An air duct 11 is provided on the back side of the buckling box. A working flowmeter 13 is provided on the air duct. The buckling box is used to simulate the indoor environment. When testing building components, the building components are installed on the building component installation opening. The wind supply device generates air volume to simulate the harsh outdoor environment. The working flowmeter can measure the air permeability of the building components, and the wind pressure resistance performance of the building components can be measured through the pressure sensor. Item 5 in the figure represents an air inlet baffle.

[0032] The calibration device for a building component testing machine in the present invention can calibrate the working flowmeter and pressure sensor in the building component testing machine. The simulation window body is fixed at the building component installation opening of the building component testing machine through bolts. The wind supply device supplies air to the pressure box. The power motor controls the ventilation cross-sectional area of the ventilation opening by controlling the opening degree of the disc, so as to simulate different sizes of door and window opening seams. The calibration flowmeter directly calibrates the working flowmeter. When simulating different door and window opening seams, there is no need to disassemble the buckling box and the simulation window, which is very convenient to use; at the same time, the working environment of the calibration flowmeter is exactly the same as that of the working flowmeter, and accurate calibration of the working flow can be achieved. In other embodiments of the present invention: The flow regulating valve can also be other valves capable of realizing flow regulation such as a ball valve or a gate valve; the flow regulating valve can also be a pneumatic valve driven by pneumatic power or a hydraulic valve driven by hydraulic power; the simulation window body may not be a square box structure. For example, the simulation window body is a solid plate structure. At this time, the flow regulating valve, pressure sensor, battery, etc. need to be installed on one side of the simulation window body; the flow stabilizer can also be not provided.

[0033] An embodiment 2 of a calibration device for a building component testing machine is as Figure 7 shown in the figure: The difference between embodiment 2 and embodiment 1 is that the detachable connection structure of the air duct is a connecting pipe 35 inserted and connected to the tail end of the air duct 11. A sealing ring is provided between the connecting pipe and the air duct. Since the pressure in the buckling box is not high, the connection relationship between the standard pressure sensor and the air duct can be satisfied through insertion. The feature of this solution is that there is no need to transform the building component testing machine, and the connecting pipe 35 of the working flowmeter can be directly inserted into the air duct 11. Item 13 in the figure represents the working flowmeter; item 34 represents the flow stabilizer; item 20 represents the calibration flowmeter. In other embodiments of the present invention, the connecting pipe can also be directly sleeved on the air duct 11.

Claims

1. A calibration device for a building component testing machine, comprising a flowmeter for calibration and a simulation window, characterized in that: The simulation window includes a simulation window body for blocking the building component installation opening of the corresponding building component testing machine. A ventilation opening penetrating the simulation window body in the thickness direction of the simulation window is formed on the simulation window body. A flow regulating valve for adjusting the air flow rate of the ventilation opening is arranged at the ventilation opening. The flow regulating valve is an electric butterfly valve. The power motor of the electric butterfly valve is fixed on the simulation window body. A battery for supplying power to the power motor is arranged on the simulation window body. The simulation window body is of a square box structure and includes a front body plate, a rear body plate and body side plates connected between the front body plate and the rear body plate. The ventilation opening includes a front ventilation opening part formed on the front body plate and a rear ventilation opening part formed on the rear body plate. The flow regulating valve, the power motor and the battery are all arranged in the cavity surrounded by the front body plate, the rear body plate and the body side plates. The electric butterfly valve includes a valve seat and a disc plate rotatably matched with the valve seat and driven by the power motor to rotate. The flow regulating valve is located between the front body plate and the rear body plate. The front end of the valve seat is hermetically fixed on the front body plate, and the rear end of the valve seat is hermetically fixed on the rear body plate.

2. The calibration device for a building component testing machine according to claim 1, characterized in that: A standard pressure sensor is further arranged on the simulation window body. The standard pressure sensor has an air inlet for communicating with the pressure box of the building component testing machine, and an air pipe for communicating with the buckling box is connected to the air outlet of the standard pressure sensor.

3. The calibration device for a building component testing machine according to claim 1 or 2, characterized in that: The calibration flowmeter and the simulation window are arranged independently of each other. The calibration flowmeter has an air pipe detachable connection structure for detachably connecting with the tail end of the air pipe on the back side of the buckling box of the building component testing machine.

4. The calibration device for a building component testing machine according to claim 3, characterized in that: The air pipe detachable connection structure is a flange bolt connection structure or a connecting pipe inserted and matched with the tail end of the air pipe.

5. Simulation window of the calibration device for building component testing machines, characterized in that: The simulation window includes a simulation window body for blocking the building component installation opening of the corresponding building component testing machine. A ventilation opening penetrating the simulation window body in the thickness direction of the simulation window is formed on the simulation window body. A flow regulating valve for adjusting the air flow rate of the ventilation opening is arranged at the ventilation opening. The flow regulating valve is an electric butterfly valve. The power motor of the electric butterfly valve is fixed on the simulation window body. A battery for supplying power to the power motor is arranged on the simulation window body. The simulation window body is of a square box structure and includes a front body plate, a rear body plate and body side plates connected between the front body plate and the rear body plate. The ventilation opening includes a front ventilation opening part formed on the front body plate and a rear ventilation opening part formed on the rear body plate. The flow regulating valve, the power motor and the battery are all arranged in the cavity surrounded by the front body plate, the rear body plate and the body side plates. The electric butterfly valve includes a valve seat and a disc plate rotatably matched with the valve seat and driven by the power motor to rotate. The flow regulating valve is located between the front body plate and the rear body plate. The front end of the valve seat is hermetically fixed on the front body plate, and the rear end of the valve seat is hermetically fixed on the rear body plate.

6. The simulated window according to claim 5, wherein: A standard pressure sensor is further arranged on the simulation window body. The standard pressure sensor has an air inlet for communicating with the pressure box of the building component testing machine, and an air pipe for communicating with the buckling box is connected to the air outlet of the standard pressure sensor.

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