CN117367699A - Door and window three-property detection equipment calibration device and method - Google Patents
Door and window three-property detection equipment calibration device and method Download PDFInfo
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- 238000009530 blood pressure measurement Methods 0.000 claims abstract description 7
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- 239000007921 spray Substances 0.000 claims description 8
- 239000002390 adhesive tape Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
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- 238000005192 partition Methods 0.000 description 4
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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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
- G01L27/002—Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination
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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
- G01M13/00—Testing of machine parts
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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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
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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
- G01N3/62—Manufacturing, calibrating, or repairing devices used in investigations covered by the preceding subgroups
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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
- G01N2203/0005—Repeated or cyclic
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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
- G01N2203/001—Impulsive
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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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
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Abstract
The invention relates to a door and window three-property detection equipment calibration device, which comprises a pressure calibration unit, an air flow calibration unit, a water flow calibration unit and a displacement calibration unit; the pressure calibration unit comprises a standard simulation window, wherein the standard simulation window is of a hollow structure, one side of the standard simulation window is provided with an air flow measurement hole and an air pressure measurement hole, the other side of the standard simulation window is uniformly provided with a plurality of air holes, and the air pressure measurement hole is connected with a calibration pressure gauge; the air flow calibration unit comprises a calibration flowmeter connected in series between the air flow measurement hole and an air flow measurement device of the detection equipment; the water flow calibration unit comprises a water collection tank arranged at the opening of the pressure tank; the method comprises the steps of pressure calibration, air flow calibration, water flow calibration and displacement calibration, corresponding calibration modules are installed for the door and window three-dimensional detection equipment in different detection stages, and data of the detection equipment and the calibration modules are recorded during calibration.
Description
Technical Field
The invention belongs to the technical field of door and window detection, and particularly relates to a calibration device and method for door and window three-dimensional detection equipment.
Background
Doors and windows are important components in a building enclosure system, and the three properties of the doors and the windows mainly refer to air tightness, water tightness and wind pressure resistance. The door and window three-property detection equipment is a device for detecting the three properties of the door and the window. The door and window three-property detection equipment can detect the door and window three-property only by meeting the requirements of GB/T7106-2019 national standard, JJF (jaw) 66-2020 standard and the like.
As a metering appliance, in the period calibration of door and window three-dimensional detection equipment, the metering tracing of the door and window three-dimensional detection equipment is mainly performed by disassembling and inspecting, and the calibration of the water spraying quantity requires the water flow meter of the disassembling equipment to perform the tracing of the inspection; the air flow is calibrated by disassembling the air flow meter for carrying out the supply inspection and tracing; the displacement calibration requires disassembly of the displacement meter for inspection tracing; in addition, the flowmeter of the door and window three-property detection device is an inserted gas mass flowmeter, and the flowmeter can realize flow metering by matching a pipeline with a certain length and a fixed pipe diameter. The flowmeter needs to be disassembled during daily calibration, but the pipeline of the equipment is not suitable for disassembly and inspection, so the flowmeter needs to be additionally matched with the pipeline with corresponding pipe diameter and length for calibration according to the specification requirement, and the accuracy of the flowmeter is different from that of the flowmeter in actual working conditions during tracing. The method has the defects of unreliable metering performance, complex procedure, long inspection period, influence on daily detection business of door and window three-dimensional detection equipment after disassembly and inspection, and the like. Therefore, there is a need for a calibration device and method that can be calibrated in situ.
Disclosure of Invention
The technical problem to be solved by the invention is that the calibration device and the method of the existing door and window detection equipment have the defects of unreliable metering performance, complex procedure, long inspection period, influence on daily detection business of the door and window three-dimensional detection equipment after disassembly and inspection.
In order to solve the problems, the invention adopts the following technical scheme:
the calibrating device of the door and window three-property detecting equipment comprises a pressure calibrating unit, an air flow calibrating unit, a water flow calibrating unit and a displacement calibrating unit;
the pressure calibration unit comprises a standard simulation window, wherein the standard simulation window is of a hollow structure, one side of the standard simulation window is provided with an air flow measurement hole and an air pressure measurement hole, the other side of the standard simulation window is uniformly provided with a plurality of air holes, and the air pressure measurement hole is connected with a calibration pressure gauge;
the air flow calibration unit comprises a calibration flowmeter connected in series between the air flow measurement hole and an air flow measurement device of the detection equipment;
the water flow calibration unit comprises a water collecting tank arranged at the opening of the pressure tank, wherein one side of the water collecting tank is opened, and the opening surface of the water collecting tank is opposite to the opening surface of the pressure tank and is mutually parallel to the opening surface of the pressure tank; the water collection tank is divided into a plurality of identical water collection cavities, and the water collection cavities are respectively connected with a water collection container; the electronic scale is also provided for weighing the water collecting container;
the displacement calibration unit comprises a comparison table through which the displacement measurement device is calibrated.
As one implementation mode of the invention, the air collecting box is provided with the air outlet pipe, the air flow measuring device is connected with the outer end of the air outlet pipe, the air outlet of the calibration flowmeter is connected with the inner end of the air outlet pipe, the air inlet of the calibration flowmeter is connected with the air flow measuring hole, and a second valve is arranged between the calibration flowmeter and the air flow measuring hole.
As one implementation mode of the invention, the standard simulation window comprises a square installation frame, wherein a bottom plate is fixedly arranged on one side of the installation frame, a ventilation plate is fixedly arranged on the other side of the installation frame, the middle part of the bottom plate is provided with the air flow measuring holes, and a plurality of ventilation holes are uniformly formed in the ventilation plate; the measuring range of the calibration pressure gauge is-200 Pa, -1000Pa, -7000 Pa.
As one implementation mode of the invention, the water collecting cavities in the water collecting tanks are obliquely arranged, the opening ends of the water collecting cavities are high, the closed ends of the water collecting cavities are low, and the bottoms of the closed ends of the water collecting cavities are provided with water outlets.
As one embodiment of the invention, an opening is formed on one side of a pressure tank of the detection device, marks are arranged on the inner wall opposite to the opening surface of the pressure tank at nine intersection points of three transverse lines for dividing the height into four parts and three vertical lines for dividing the width into four parts, when water flow calibration is carried out, the water collection tank is sequentially arranged at a position corresponding to each intersection point, and the center point of the opening surface of the water collection tank is arranged opposite to the intersection points.
The door and window three-property detection equipment calibration method based on the calibration device comprises pressure calibration, air flow calibration, water flow calibration and displacement calibration;
pressure calibration: the standard simulation window is installed on the pressure box of the detection equipment, the wind pressure resistance detection program is executed on the standard simulation window, and the reading p of the pressure gauge of the detection equipment is compared i And the reading p of the calibration pressure gauge is used for obtaining the indication error of the pressure gauge of the detection equipment, so as to calibrate;
air flow calibration: mounting a standard analog window on the pressure tank of the inspection apparatus, performing an air tightness inspection procedure by comparing the readings Q of the air flow measuring device i And calibrating the reading Q of the flowmeter to obtain an indication error of the air flow measuring device, and further calibrating;
water flow calibration: after the water collection tank is installed, a spray header on the inner wall of the pressure tank is started, the total flow is set, water in each water collection cavity is collected after a period of time is counted, and the water spraying quantity v of each water collection cavity in unit time is calculated i Adding and summing the water spraying amount in the unit time of the four water collecting cavities to obtain the total water spraying amount v in the unit time of the water collecting tank, and further calibrating;
and (3) displacement calibration: mounting a displacement measuring device of the detection equipment on a comparison table, uniformly selecting a plurality of calibration points in the output range of the displacement measuring device after zeroing the displacement measuring device, placing gauge blocks in sequence for measurement, and recording the nominal value L of the gauge blocks i And an output value y of the displacement measuring device i The method comprises the steps of carrying out a first treatment on the surface of the According to the output value y of the displacement measuring device i Sum gauge nominal value L i Calculating the indication error of the displacement measuring device, and further calibrating。
As one implementation mode of the invention, when the wind pressure resistance performance detection program is executed, a plurality of calibration points are respectively selected for calibration, each calibration point is repeatedly measured three times, and the reading p of the pressure gauge of the detection equipment is recorded during each measurement i And calibrating the reading p of the pressure gauge, and comparing the arithmetic average value of the reading p and the reading p of the pressure gauge to obtain the indication error of the pressure gauge of the detection equipment.
As one embodiment of the invention, when the air tightness detection program is executed to calibrate the air measuring device, the air tightness detection program is calibrated three times, when the air tightness measurement device is calibrated for the first time, the air holes are sealed through the adhesive tape, only one air hole is reserved, and the lower use limit of 10m is selected by the calibration point 3 /h; in the second calibration, the air holes are sealed by the adhesive tape, eight air holes are left, and the middle value of 80m is selected by the calibration points 3 /h; in the third calibration, the vent holes are fully opened without sealing, and the upper use limit of the calibration point is 160m 3 /h; the measurement is repeated three times at each calibration point, and the reading Q of the air flow measuring device is recorded at each measurement i And calibrating the reading Q of the flowmeter, and comparing the arithmetic average value of the reading Q and the reading Q of the flowmeter to obtain the indication error of the air flow measuring device.
As one implementation mode of the invention, the water collection tanks are sequentially arranged at the positions corresponding to the nine junction points at the left opening part of the pressure tank for calibration; the water spraying quantity in each water collecting cavity is required to meet the requirement that v is less than or equal to 0.15L/min i The total water spraying amount is not more than 0.37L/min, the total water spraying amount is not less than 0.74L/min, otherwise, the spray header and/or the water flow meter are adjusted and then calibrated.
As one embodiment of the invention, when the displacement calibration is performed, the displacement calibration is performed according to the nominal value L of the gauge block i The method comprises the steps of firstly measuring from small to large in sequence, then measuring from large to small in sequence into one measuring cycle, and carrying out three measuring cycles in total.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in:
according to the device and the method for calibrating the door and window three-dimensional detection equipment, corresponding calibration modules are installed aiming at different detection stages of the door and window three-dimensional detection equipment, data of the detection equipment and the calibration modules are recorded during calibration, and the whole calibration process is completed. The door and window three-dimensional detection device has the advantages of being simple to operate, convenient to carry, capable of being calibrated on site, stable and reliable in calibration data, capable of reducing manpower and material resources, short in calibration period, free of affecting daily detection service of door and window three-dimensional detection devices, capable of eliminating influence of factors such as disassembly and transition of the detection devices on metering performance, and the like.
Drawings
FIG. 1 is a schematic diagram of the structure of the detecting device in the present invention.
FIG. 2 is a schematic diagram of the calibration device of the detection apparatus according to the present invention.
Fig. 3 is a schematic view of the structure of the pressure tank and the standard simulation window in the present invention.
Fig. 4 is a schematic view of the structure of a standard analog window according to the present invention.
Fig. 5 is a schematic view of the internal structure of a standard analog window in the present invention.
Fig. 6 is an exploded view of a standard analog window in accordance with the present invention.
Fig. 7 is a schematic perspective view of the pressure tank and the water collecting tank in the present invention.
Fig. 8 is a schematic diagram showing the front view of the pressure tank and the water collecting tank in the present invention.
Fig. 9 is a schematic left-hand view of the pressure tank and the water collecting tank in the present invention.
Fig. 10 is a schematic view of the structure of the header tank of the present invention.
FIG. 11 is a schematic view of the structure of the comparison table in the present invention.
FIG. 12 is a pressure calibration pressurization sequence diagram in the present invention.
Wherein: 1 pressure box, 2 air collecting box, 201 outlet pipe, 3 water flowmeter, 4 shower head, 5 air supply equipment, 6 inlet pipe, 8 first valve, 9 first pipeline, 10 differential pressure measuring equipment, 11 air flow measuring device, 12 top board, 13 baffle, 1301 steel plate, 1302 frame, 14 displacement measuring device, 15 door and window test piece, 16 standard simulation window, 17 installing frame, 18 bottom board, 19 air flow measuring hole, 20 bolt hole, 21 barometric hole, 22 ventilation board, 23 bleeder hole, 24 calibration manometer, 25 connecting pipe, 26 second valve, 27 calibration flowmeter, 28 silica gel hose, 2901 upper board, 2902 lower board, 30 curb plate, 31 backplate, 32 first baffle, 33 second baffle, 34 outlet, 35 lid, 36 drain pipe, 37 water collecting container, 38 electronic scale, 39 comparison table, 40 support, 41 gauge block, 42 third valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be clearly and completely described in connection with the following specific embodiments.
The calibrating device of the door and window three-property detecting equipment comprises a pressure calibrating unit, an air flow calibrating unit, a water flow calibrating unit and a displacement calibrating unit, wherein the pressure calibrating unit is used for calibrating the air flow of the door and window three-property detecting equipment;
the pressure calibration unit comprises a standard simulation window 16, the standard simulation window 16 comprises a square installation frame 17, a bottom plate 18 is fixedly arranged on one side of the installation frame 17, a ventilation plate 22 is fixedly arranged on the other side of the installation frame 17, air flow measurement holes 19 are formed in the bottom plate 18, and a plurality of ventilation holes 23 are uniformly formed in the ventilation plate 22; the standard simulation window 16 is fixed at the corner of the air inlet pipe 6 arranged at the bottom of the pressure box 1 through the upper pressing plate 12 and the baffle plate 13, wherein the bottom plate 18 is positioned at the outer side, a closed cavity is formed among the upper pressing plate 12, the baffle plate 13, the standard simulation window 16 and the pressure box 1, the standard simulation window 16 is provided with an air pressure measuring hole 21, and the air pressure measuring hole 21 is connected with a calibration pressure gauge 24;
the air flow calibration unit comprises a calibration flowmeter 27 connected with an air flow measurement hole 19 of the standard simulation window 16 through a connecting pipe 25, the calibration flowmeter 27 is connected with the air flow measurement device 11 through a silica gel hose 28, and a second valve 26 is arranged on the connecting pipe 25;
as shown in fig. 2, 7-10, the water flow calibration unit comprises a water collecting tank arranged at the opening of the pressure tank 1 through a clamp, a cover 35 is arranged on the water collecting tank, the right side of the water collecting tank is opened, and the opening surface is parallel to the opening surface of the pressure tank 1; the water collection tank is divided into four independent and same water collection cavities, a water outlet 34 is formed in the bottom of each water collection cavity, and the four water outlets 34 are connected with four corresponding water collection containers 37 through four water drainage pipes 36 respectively; an electronic scale 38 for weighing the water collection container 37 is also provided;
as shown in fig. 11, the displacement calibration unit includes a comparison table 39, a displacement measuring device 14 mounted on the comparison table 39 through a bracket 40, and a plurality of size gauge blocks 41, wherein the measuring axis of the displacement measuring device 14 is perpendicular to the working surface of the gauge blocks 41.
As shown in fig. 1, the detection device comprises a pressure box 1 and an air collection box 2, wherein the right side of the pressure box 1 is provided with an opening, the left side of the pressure box 1 is provided with a spray header 4 and an air inlet pipe 6 communicated with an air supply device 5, the spray headers 4 are uniformly provided with a plurality of spray headers and are respectively connected with a main pipeline through branch pipelines, the main pipeline is provided with a water flowmeter 3, the air inlet pipe 6 is arranged at the bottom corner of the right side inner wall of the pressure box 1, and the air supply device 5 is provided with a detection device pressure gauge; the air collection box 2 is connected with an air flow measuring device 11; the upper pressing plate 12 is arranged in the pressure box 1 and can be adjusted up and down, and the upper pressing plate further comprises a baffle 13 matched with the door and window test piece 15 and a displacement measuring device 14 arranged on the outer side of the door and window test piece 15, wherein the upper pressing plate 12 is adjusted up and down through a lifting device, the lifting device is a conventional technical means in the art, details are omitted here, after the upper pressing plate 12 is adjusted, the upper pressing plate 12 can be pressed downwards through a clamp, and the upper ends of the baffle 13 and the door and window test piece 15 are pressed, so that sealing is achieved; the air collecting box 2 can move left and right under the action of the driving mechanism, and the opening of the pressure box 1 and the opening of the air collecting box 2 can be aligned and then pressed together, so that the air tightness of doors and windows is detected through the air flow measuring device 11; the baffle 13 comprises a steel plate 1301 and a frame 1302 made of wood and fixedly arranged on one side of the steel plate 1301;
in this embodiment, as shown in fig. 2 and fig. 7, the right side wall of the pressure tank 1 is square, a plurality of showerheads 4 are arranged on the inner wall of the pressure tank in a rectangular array, a third valve 42 is respectively arranged on a branch pipeline of each of the showerheads 4, and the main pipeline is connected with a water pump.
As shown in fig. 1, 4-6, the air flow measuring holes 19 are formed in the middle of the bottom plate 18, and 16 air holes 23 are formed in a rectangular array; the calibration pressure gauge 24 is connected with the air pressure measuring hole 21 through a PU air pipe, and the measurement range of the calibration pressure gauge 24 is-200 Pa, -1000Pa, -7000 Pa.
As shown in fig. 10, the water collection tank includes an upper plate 2901 and a lower plate 2902 which are arranged in parallel, the left sides of the upper plate 2901 and the lower plate 2901 are connected by a back plate 31, the front side and the rear side are connected by a side plate 30, the upper plate 2901 and the lower plate 2902 are arranged in a low left-right high inclined manner, the side plate 30 is in a parallelogram shape, the water collection tank is divided into four water collection cavities by a first partition plate 32 and a second partition plate 33 which are arranged in a staggered manner, wherein the first partition plate 32 and the upper plate 2901 are arranged in parallel with each other at the middle position of the upper plate 2901 and the lower plate 2902, the second partition plate 33 and the side plate 30 are arranged in parallel with each other at the middle position of the two side plates 30, and the back plate 31 is provided with a water outlet 34 at the position corresponding to the bottom of the water collection cavity.
As shown in fig. 9, marks are provided on the inner wall of the right side of the pressure tank 1 at nine intersections of three transverse lines for dividing the height into four equal parts and three vertical lines for dividing the width into four equal parts, the water collecting tank is arranged at a position corresponding to the intersections through a clamp, and the center point of the opening surface of the water collecting tank is arranged in alignment with the intersections.
A first pipeline 9 is further connected between the air collecting boxes 2 of the pressure box 1 in the detection equipment, and a differential pressure measurement equipment is arranged on the first pipeline 9. A plurality of bolt holes 20 are uniformly arranged around the air flow measuring hole 19 in an annular shape and are used for being connected with a flange on the connecting pipe 25. The detection device pressure gauge and the calibration pressure gauge 24 are both digital pressure gauges, and the displacement measuring device 14 is a displacement sensor.
The invention also provides a door and window three-property detection equipment calibration method based on the calibration device, which comprises pressure calibration, air flow calibration, water flow calibration and displacement calibration;
pressure calibration: as shown in fig. 2 and 3, the upper pressure plate 12, the baffle plate 13 and the standard simulation window 16 enclose a closed cavity at the corner of the pressure box 1 where the air inlet pipe 6 is arranged, the air pressure measuring hole 21 on the standard simulation window 16 is connected to the calibration pressure gauge 24 through the PU air pipe, the second valve 26 on the connecting pipe 25 is closed, the air supply device 5 of the detection device is started, and the wind pressure resistance performance detection program is executed to calibrate the pressure gauge of the detection device;
when the wind pressure resistance performance detection program is executed, a plurality of calibration points are respectively selected for calibration, each calibration point is repeatedly measured for three times, and the reading p of the pressure gauge of the detection equipment is recorded during each measurement i And the reading p of the calibration manometer 24, and comparing the arithmetic average value of the two readings to obtain the indication error of the manometer of the detection equipment. As shown in FIG. 12, to detect an indication p of the manometer of the apparatus when calibrated i Based on the above, three pressure pulses with absolute value of 500Pa are respectively applied before positive and negative pressure detection for about 10s, then the pressure is put into a graded pressurizing sequence, the pressurizing time of each stage is about 10s, and the corresponding pressure p is recorded in time after the pressure of each stage is stable i And p, positive pressure detection is performed first and then negative pressure detection is performed.
After the measurement is completed, the pressure indication error delta of each calibration point is calculated by using a formulaCalculation of>Is the arithmetic average of three actual measurement values of the calibration device.
And (3) judging the compliance requirement: the measured result value needs to meet delta less than or equal to 2%, otherwise, the pressure gauge of the detection equipment needs to be calibrated.
Air flow calibration: as shown in fig. 2 and 3, a closed cavity is formed by enclosing the upper pressure plate 12, the baffle plate 13 and the standard simulation window 16 at the corner of the pressure box 1 where the air inlet pipe 6 is arranged, a calibration flowmeter 27 is connected with a connecting pipe 25, the calibration flowmeter 27 is connected with the air flow measuring device 11 through a silica gel hose 28, a second valve 26 is opened, the air supply device 5 of the detection device is started, and an air tightness detection program is executed to calibrate the air flow measuring device 11;
when the air tightness detection program is executed to calibrate the air flow measuring device 11, the calibration is performed three times, and when the calibration is performed for the first time, the ventilation holes 23 are sealed by the adhesive tape, and only one ventilation hole is leftAn air vent 23; in the second calibration, the ventilation holes 23 are sealed by the adhesive tape, and 8 ventilation holes 23 are left; in the third calibration, the ventilation holes 23 are not sealed; three calibrations respectively apply to the air flow measuring device 11 a lower limit of use of 10m 3 /h, intermediate value 80m 3 /h and upper use limit 160m 3 And/h, repeating the measurement for three times at each calibration point, recording the reading Qi of the air flow measuring device 11 and the reading Q of the calibration flowmeter 27 during each measurement, and comparing the arithmetic average value of the two to obtain the indication error of the air flow measuring device 11, thereby calibrating the air flow measuring device 11.
After the pressure test is stabilized in the air tightness detection program, when the pressure reaches 100Pa and is stabilized, respectively recording Q i And Q, repeatedly measuring 3 times, corresponding indication error delta Q According to the formula Calculation is performed (i.e. a->The meter 27 is calibrated for three measurements indicating an arithmetic average of the value Q.
And (3) judging the compliance requirement: the measurement result value needs to satisfy delta Q │≤5％
Water flow calibration: as shown in fig. 7-10, the water collection tank is installed at the position corresponding to nine junction points (a, b, c, d, e, f, g, h, i) on the left opening part of the pressure tank 1 through a clamp in sequence, and the cover 35 is covered after the water collection tank is installed; when the water flow meter 3 indicates that the set total flow is reached, opening a cover 35 on the water tank and timing, and covering the cover 35 after ten minutes; the water sprayed into the four water collecting cavities of the water collecting tank is respectively led into four corresponding water collecting containers 37 through a drain pipe 36; the mass m of water collected in each water collecting container 37 is weighed by an electronic scale 38 i Measuring the correspondingThe corresponding density of the water is obtained by inquiring the density table, and then the water spraying quantity v of each water collecting cavity in unit time is calculated according to the mass mi, the water density and the spraying time i Adding and summing the water spraying amounts of the four water collecting cavities to obtain the total water spraying amount v of the water collecting tank in unit time;
when the water collection tank is installed, the right side of the water collection tank is opened, the opening surface is parallel and level to the opening surface of the pressure tank 1, and the distance between the two opening surfaces is controlled within +/-50 mm; the water spraying quantity in each water collecting cavity is required to meet the requirement that v is less than or equal to 0.15L/min i The total water spraying amount is not more than 0.37L/min, the total water spraying amount is not less than 0.74L/min, otherwise, the spray header 4 and/or the water flow meter 3 are adjusted and then calibrated.
And (3) displacement calibration: mounting the displacement measuring device 14 of the detection equipment on the comparison table 39, wherein the measuring axis of the displacement measuring device 14 is perpendicular to the working surface of the gauge block 41; after zeroing the displacement measuring device 14, uniformly selecting 11 calibration points in the output range of the displacement measuring device, wherein the nominal measuring range of the displacement measuring device 14 of the door and window three-property detection equipment on the market at present is 0-50 mm, and taking 0-50 mm as an example, the calibration points are 11 points of 0mm,5mm,10mm,15mm,20mm,25mm,30mm,35mm,40mm,45mm and 50mm, measuring by sequentially placing the gauge blocks 41, and recording the nominal value L of the gauge blocks 41 i And the output value y of the displacement measuring device 14 i The method comprises the steps of carrying out a first treatment on the surface of the According to the output value y of the displacement measuring device 14 i Sum gauge 41 nominal value L i Calculating an indication error of the displacement measuring device 14, and further calibrating;
in the case of displacement calibration, the reference value L of the gauge block 41 is used i The method comprises the steps of firstly measuring from small to large in sequence, then measuring from large to small in sequence into one measuring cycle, and carrying out three measuring cycles in total.
According to the device and the method for calibrating the door and window three-dimensional detection equipment, corresponding calibration modules are installed aiming at different detection stages of the door and window three-dimensional detection equipment, data of the detection equipment and the calibration modules are recorded during calibration, and the whole calibration process is completed. The three-dimensional door and window three-dimensional detection device has the characteristics of simplicity in operation, convenience in carrying, capability of calibrating on site, stability and reliability in calibration data, capability of reducing manpower and material resources, short calibration period, no influence on daily detection business of the three-dimensional detection device of the door and window and the like.
Although the invention has been described in detail with reference to the foregoing embodiments, those skilled in the art may modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a door and window three nature check out test set calibrating device which characterized in that: the device comprises a pressure calibration unit, an air flow calibration unit, a water flow calibration unit and a displacement calibration unit;
the pressure calibration unit comprises a standard simulation window, wherein the standard simulation window is of a hollow structure, one side of the standard simulation window is provided with an air flow measurement hole and an air pressure measurement hole, the other side of the standard simulation window is uniformly provided with a plurality of air holes, and the air pressure measurement hole is connected with a calibration pressure gauge;
the air flow calibration unit comprises a calibration flowmeter connected in series between the air flow measurement hole and an air flow measurement device of the detection equipment;
the water flow calibration unit comprises a water collecting tank arranged at the opening of the pressure tank, wherein one side of the water collecting tank is opened, and the opening surface of the water collecting tank is opposite to the opening surface of the pressure tank and is mutually parallel to the opening surface of the pressure tank; the water collection tank is divided into a plurality of identical water collection cavities, and the water collection cavities are respectively connected with a water collection container; the electronic scale is also provided for weighing the water collecting container;
the displacement calibration unit comprises a comparison table through which the displacement measurement device is calibrated.
2. The door and window three-way inspection equipment calibration device according to claim 1, wherein: the air collection box of the detection equipment is provided with an air outlet pipe, the air flow measuring device is connected with the outer end of the air outlet pipe, the air outlet of the calibration flowmeter is connected with the inner end of the air outlet pipe, the air inlet of the calibration flowmeter is connected with the air flow measuring hole, and a second valve is arranged between the calibration flowmeter and the air flow measuring hole.
3. The calibrating device for the door and window three-property detection equipment is characterized in that the standard simulation window comprises a square installation frame, a bottom plate is fixedly arranged on one side of the installation frame, a ventilation plate is fixedly arranged on the other side of the installation frame, the middle part of the bottom plate is provided with the air flow measuring holes, and a plurality of ventilation holes are uniformly formed in the ventilation plate; the measuring range of the calibration pressure gauge is-200 Pa, -1000Pa, -7000 Pa.
4. The door and window three-way inspection equipment calibration device according to claim 1, wherein: the water collecting cavities in the water collecting tanks are obliquely arranged, the opening ends of the water collecting cavities are high, the closed ends of the water collecting cavities are low, and the bottoms of the closed ends of the water collecting cavities are provided with water outlets.
5. The door and window three-way inspection equipment calibrating device according to claim 4, wherein: the pressure tank of the detection equipment is provided with an opening at one side, marks are arranged on nine intersection points of three transverse vertical lines which are used for dividing the height into four parts and three vertical lines which are used for dividing the width into four parts on the inner wall opposite to the opening surface of the pressure tank, when water flow calibration is carried out, the water collecting tank is sequentially arranged at the position corresponding to each intersection point, and the center point of the opening surface of the water collecting tank is arranged in alignment with the intersection points.
6. A method for calibrating a door and window three-dimensional detecting device based on the calibrating device according to any one of claims 1-5, characterized in that: the method comprises the steps of pressure calibration, air flow calibration, water flow calibration and displacement calibration;
pressure calibration: the standard simulation window is installed on the pressure box of the detection equipment, the wind pressure resistance detection program is executed on the standard simulation window, and the reading p of the pressure gauge of the detection equipment is compared i And the reading p of the calibration pressure gauge is used for obtaining the indication error of the pressure gauge of the detection equipment, so as to calibrate;
air flow calibration: will be standardThe simulation window is mounted on the pressure tank of the detection device, an air tightness detection procedure is performed by comparing the readings Q of the air flow measuring device i And calibrating the reading Q of the flowmeter to obtain an indication error of the air flow measuring device, and further calibrating;
water flow calibration: after the water collection tank is installed, a spray header on the inner wall of the pressure tank is started, the total flow is set, water in each water collection cavity is collected after a period of time is counted, and the water spraying quantity v of each water collection cavity in unit time is calculated i Adding and summing the water spraying amount in the unit time of the four water collecting cavities to obtain the total water spraying amount v in the unit time of the water collecting tank, and further calibrating;
and (3) displacement calibration: mounting a displacement measuring device of the detection equipment on a comparison table, uniformly selecting a plurality of calibration points in the output range of the displacement measuring device after zeroing the displacement measuring device, placing gauge blocks in sequence for measurement, and recording the nominal value L of the gauge blocks i And an output value y of the displacement measuring device i The method comprises the steps of carrying out a first treatment on the surface of the According to the output value y of the displacement measuring device i Sum gauge nominal value L i And calculating an indication error of the displacement measuring device, and further calibrating.
7. The method for calibrating door and window three-property detection equipment according to claim 6, wherein the method comprises the following steps: when the wind pressure resistance performance detection program is executed, a plurality of calibration points are respectively selected for calibration, each calibration point is repeatedly measured for three times, and the reading p of the pressure gauge of the detection equipment is recorded during each measurement i And calibrating the reading p of the pressure gauge, and comparing the arithmetic average value of the reading p and the reading p of the pressure gauge to obtain the indication error of the pressure gauge of the detection equipment.
8. The method for calibrating door and window three-property detection equipment according to claim 6, wherein the method comprises the following steps: when the air tightness detection program is executed to calibrate the air flow measuring device, the air tightness is calibrated for three times, the air holes are sealed through the adhesive tape when the air tightness detection program is calibrated for the first time, only one air hole is reserved, and the lower use limit of 10m is selected by the calibration point 3 /h; in the second calibration, the air holes are sealed by the adhesive tape, eight air holes are left, and the middle value of 80m is selected by the calibration points 3 /h; in the third calibration, the vent holes are fully opened without sealing, and the upper use limit of the calibration point is 160m 3 /h; the measurement is repeated three times at each calibration point, and the reading Q of the air flow measuring device is recorded at each measurement i And calibrating the reading Q of the flowmeter, and comparing the arithmetic average value of the reading Q and the reading Q of the flowmeter to obtain the indication error of the air flow measuring device.
9. The method for calibrating door and window three-property detection equipment according to claim 6, wherein the method comprises the following steps: the water collecting tanks are sequentially arranged at positions corresponding to the nine intersection points at the left opening part of the pressure tank for calibration; the water spraying quantity in each water collecting cavity is required to meet the requirement that v is less than or equal to 0.15L/min i The total water spraying amount is not more than 0.37L/min, the total water spraying amount is not less than 0.74L/min, otherwise, the spray header and/or the water flow meter are adjusted and then calibrated.
10. The method for calibrating door and window three-property detection equipment according to claim 6, wherein the method comprises the following steps: when the displacement calibration is carried out, the standard value L of the gauge block is adopted i The method comprises the steps of firstly measuring from small to large in sequence, then measuring from large to small in sequence into one measuring cycle, and carrying out three measuring cycles in total.
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| CN202311306150.0A CN117367699A (en) | 2023-10-10 | 2023-10-10 | Door and window three-property detection equipment calibration device and method |
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| CN202311306150.0A CN117367699A (en) | 2023-10-10 | 2023-10-10 | Door and window three-property detection equipment calibration device and method |
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